JP5800385B2 - Filtration device - Google Patents

Description

  The present invention relates to a filtration apparatus suitable for separating solid particles contained in a liquid to be filtered by a filter.

  Conventionally, an industrial filtration device that separates solid particles contained in a filtration target liquid using a bag-like filter (bag filter) is known (for example, see Patent Document 1).

  This filtering device is, for example, a machining powder such as a cutting powder and a polishing powder contained in a liquid to be filtered such as coolant, cutting oil, grinding liquid, and cleaning liquid that is circulated and used for cooling, lubrication, and cleaning of a machine tool. It is used to separate solid particles of a predetermined size or more (work scrap).

  When filtering the liquid to be filtered with a conventional filtration device, solid particles separated inside the bag-like filter accumulate and become clogged, so when the bag-like filter becomes clogged and the filtration function can no longer be performed The bag-shaped filter is exchanged.

  In such a conventional filtration device, the life (usable time) that is the period until the bag-like filter is clogged is short, and it takes time and effort to attach and detach the bag-like filter. It is known that there is a problem that the operator cannot easily perform the operation.

  Therefore, the applicant of the present invention has proposed a filtering device that has a longer life of the bag-like filter than before and that can be easily attached and detached by the operator, and that is easy for the operator to use (for example, Patent Documents). 2).

JP 2003-154213 A JP 2010-184170 A

  Incidentally, in recent years, there has been a demand for a filtering device that requires less filter replacement than the conventional one.

  This invention is made | formed in view of such a point, and it aims at providing the filtration apparatus with little replacement frequency of a filter.

  In order to achieve the above-mentioned object, the filtering device according to the first aspect of the present invention is characterized in that the solid particles contained in the liquid to be filtered are formed to be stretchable by a knitted elastic yarn. A cylindrical filter for separation, a filter support formed in a cylindrical shape to which the cylindrical filter is attached, and the filter support in a state in which the cylindrical filter is attached, the length direction of which is vertical. A filter case for receiving the filter, and the filter support is attached so that one end of the tubular filter is folded back, and the other end of the tubular filter is folded back. The lower mounting ring portion attached to the upper mounting ring portion and the lower mounting ring portion are connected, and the filtrate or the liquid to be filtered after being filtered by the cylindrical filter An upper and lower connecting portion having a plurality of passage openings to be passed, and the filter case includes a case body formed in a cylindrical shape in which the filter support is inserted and removed through the upper opening, and the case body An upper lid that is detachably attached to the case body to cover the upper opening of the tube, and a cylindrical shape that is disposed inside the case body with its length direction directed vertically to support the filter support from below. A support support formed on the inlet, an inflow port for introducing the liquid to be filtered into the inside, and a flow port provided below the inflow port for flowing out the filtrate after being filtered by the cylindrical filter to the outside. An outlet, and a discharge port for discharging solid particles separated by the cylindrical filter to the outside, connected to a valve that is provided below the outlet and is normally closed. It lies in the fact you are.

And by employ | adopting such a structure, the cylindrical filter can isolate | separate the solid particle | grains more than the predetermined magnitude | size contained in the filtration object liquid by the stitch. In addition, the cylindrical filter formed to be stretchable by the knitted elastic yarn has an increased stitch as the clogging is caused by the accumulation of the separated solid particles in the cylindrical filter, and the filtration function is reduced. The decrease in flow rate can be reduced, and even if clogging occurs from the lower end side of the cylindrical filter, the filtration function is maintained by the upper end side of the cylindrical filter that is not clogged. The function can be maintained for a long time. Furthermore, the filter support can easily attach and detach the cylindrical filter. Moreover, the inflow port can smoothly and surely flow the liquid to be filtered into the filter case. Furthermore, the outflow port can smoothly and surely flow out the filtrate that has passed through the cylindrical filter. Furthermore, the discharge port connected to the valve that is normally closed can always deposit solid particles separated by the cylindrical filter inside the filter case, which makes it easy to open the valve. By the operation, the solid particles accumulated inside the filter case can be reliably discharged to the outside through the discharge port. That is, since the solid particles separated and deposited by the cylindrical filter can be discharged to the outside through the discharge port without removing the cylindrical filter from the filter case, the frequency of replacement of the filter is further less than the conventional one. can do. Therefore, the lifetime of the filter can be increased as compared with the conventional case, and the convenience for the operator can be easily improved.

  According to a second aspect of the present invention, the filter device according to the first aspect of the present invention is the filter device according to the first aspect, wherein the filter case is provided above the outflow port, and a cleaning fluid for removing clogging of the cylindrical filter is provided inside It has the supply port for guiding.

  By adopting such a configuration, the supply port can easily and reliably supply the cleaning fluid for removing clogging to the inside of the filter case with the upper cover attached to the case body. Further, the cleaning fluid supplied to the inside of the filter case can remove solid particles clogged in the stitches of the cylindrical filter. As a result, since the replacement frequency of the cylindrical filter can be reduced, the life of the filter can be extended and the convenience for the operator can be further improved.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the upper lid is provided with an inflow pipe penetrating the upper lid in the vertical direction. An inlet is provided, and a lower end portion of the inflow pipe is disposed inside the upper mounting ring portion, and an outflow pipe communicating with the inside and outside of the case body is provided at a lower portion of the case body, The outlet is provided at the tip of the outflow pipe, the filter case has a case bottom that closes the lower opening of the case body, and the lower part of the support support is the case bottom. And the lower end portion is provided with the discharge port, and the cylindrical filter is attached so that one end portion thereof is folded back to the upper mounting ring portion, The other end is front By being attached to the lower mounting ring part so as to be folded outward, the filter support liquid is attached to the inside of the filter support, and the liquid to be filtered flowing into the filter case from the inflow port passes the cylindrical filter. It is in the point formed so that it may pass toward the outside from the inside.

  By adopting such a configuration, the cylindrical filter can be easily attached to the inside of the filter support, and an inflow path for guiding the liquid to be filtered from the inlet to the inside of the cylindrical filter, and the cylindrical shape Secure the outflow path that guides the filtrate after filtering through the filter to the outlet through the outside of the cylindrical filter and the discharge path that guides the solid particles separated by the cylindrical filter to the outlet through the inside of the cylindrical filter. Can get to.

  According to a fourth aspect of the present invention, there is provided a filter device according to the third aspect, wherein the filter case has an inner case formed in a cylindrical shape by a transparent plastic attached to the inside of the case body. In addition, the case main body is formed with a viewing window that communicates the inside and the outside through which the cylindrical filter can be visually recognized through the inner case.

  By adopting such a configuration, the cylindrical filter can be visually recognized from the outside through the observation window, so that the degree of clogging of the cylindrical filter can be easily understood, and the solid particles separated by the cylindrical filter It is easy to know when it is discharged.

According to a fifth aspect of the present invention, the filtration device of the present invention is characterized in that, in the first or second aspect, the upper lid is provided with an inflow pipe penetrating the upper lid in the vertical direction. The inflow port is provided, the lower end portion of the inflow pipe is disposed inside the upper mounting ring portion, and the lower portion of the case body is provided with an outflow pipe communicating with the inside and outside of the case body, The outlet is provided at the tip of the outflow pipe, the filter case has a case bottom that closes the lower opening of the case body, and the lower part of the support support is the case bottom. And the lower end portion is provided with the discharge port, and the cylindrical filter is attached so that one end portion thereof is folded back to the upper mounting ring portion, The other end is front By being attached to the lower mounting ring part so as to be folded back inwardly, the filter support liquid is attached to the outside of the filter support, and the liquid to be filtered flowing into the filter case from the inflow port passes the cylindrical filter. It is in the point formed so that it may pass toward the outside from the inside.

  By adopting such a configuration, the cylindrical filter can be easily attached to the outside of the filter support, and the inflow path for guiding the liquid to be filtered from the inlet to the inside of the cylindrical filter, and the cylindrical shape Secure the outflow path that guides the filtrate after filtering through the filter to the outlet through the outside of the cylindrical filter and the discharge path that guides the solid particles separated by the cylindrical filter to the outlet through the inside of the cylindrical filter. Can get to.

Features of the filtration device of the present invention as set forth in claim 6 resides in that in Claim 5, in the inside of the case body, the solid particles pass through the tubular filter is expanded stitches of the tubular filter be expanded The cylindrical net body for preventing the state of being placed is disposed so as to surround at least the upper and lower connection portions.

  And by employ | adopting such a structure, it can prevent that the stitch of a cylindrical filter expands and it will be in the state which a solid particle passes.

Features of the filtration device of the present invention according to claim 7, in claim 1 or 2, the upper portion of the case body, the inlet pipe is provided for communicating the inside and outside of the case body, the tip of the inflow tube And the support support portion has a support bottom wall portion that closes a lower opening thereof, and the lower portion of the case body includes an outer side of the case body and the support support portion. outflow pipe is provided for communicating the internal parts, and the outlet is provided at the distal end portion of the outlet pipe, the lower end portion of the case body, the upper end of the discharge pipe extending along the vertical direction The exhaust port is provided at the lower end portion of the discharge pipe, and the cylindrical filter is attached so that one end thereof is folded back to the upper attachment ring portion, and the other end is the Fold inward to the lower mounting ring By being attached to the filter support, it is attached to the outside of the filter support, and the liquid to be filtered flowing into the filter case from the inflow port passes through the cylindrical filter from the outside to the inside. It is in the point formed.

  By adopting such a configuration, the cylindrical filter can be easily attached to the outside of the filter support, and the inflow path for guiding the liquid to be filtered from the inlet to the outside of the cylindrical filter, and the cylindrical shape Secure the outflow path that guides the filtrate after filtering through the inside of the cylindrical filter to the outlet and the discharge path that guides the solid particles separated by the cylindrical filter to the outlet through the outside of the cylindrical filter. Can get to.

  According to an eighth aspect of the present invention, there is provided a filtering device according to any one of the third to seventh aspects, wherein the upper attachment ring is attached to the lower surface of the upper lid when the upper lid is attached to the case body. The pressure ring formed by the rubber-like elastic body which clamps the said cylindrical filter between parts is provided.

  And by employ | adopting such a structure, a cylindrical filter can be clamped easily and reliably between an upper attachment ring part and a press ring by simple operation of attaching an upper cover to a case main body.

The filter device of the present invention according to claim 9 is characterized in that, in claim 1 or 2, the filter case includes a connecting flange portion provided on each of an upper end portion of the case body and an outer peripheral portion of the upper lid. the a gasket disposed between the facing surfaces of the two joining flange portions has a fastening member for fastening the two joining flange portions detachably, to the lid, the top and bottom of the upper cover A first inflow pipe penetrating in a direction is provided such that a lower opening thereof is opposed to an upper opening of the filter support, the inflow port is provided at an upper end portion of the first inflow pipe, and the case body includes: An annular upper support portion for positioning and supporting the upper mounting ring portion is provided on the opening end side of the inner surface, and the case body is between the upper opening of the case body and the annular upper support portion. Inside and outside Second inflow pipe is provided for passing, the second to-edge portion of the inlet tube and the inlet is provided in the lower portion of the case body, the outflow pipe is provided for communicating the inside and outside of the case body The outflow pipe is provided with the outflow port at the front end thereof, the case body has a case bottom portion that closes the lower opening thereof, and the lower portion of the support support portion has the case bottom portion closed. It penetrates and protrudes downward from the case body, and the discharge port is provided at the lower end portion thereof.The cylindrical filter is attached so that one end portion thereof is folded back to the upper mounting ring portion, and the like. Since the end portion is attached to the lower attachment ring portion so as to be folded outward, the inflow port and the second inflow tube provided in the first inflow tube are mounted inside the filter support. Set in One of the formed inlets can be selected and used, and the filter case can be used by fastening the connecting flange portion of the case body and the connecting flange portion of the upper lid with the fastening member. The upper lid is attached to the casing and the gap between the case body and the upper lid is sealed with the gasket so that the liquid to be filtered can be sucked into the filter case. The liquid to be filtered that has flowed into the inside is formed so as to pass through the cylindrical filter from the inside toward the outside.

  By adopting such a configuration, the cylindrical filter can be easily attached to the inside of the filter support, and an inflow path for guiding the liquid to be filtered from the inlet to the inside of the cylindrical filter, and the cylindrical shape Secure the outflow path that guides the filtrate after filtering through the filter to the outlet through the outside of the cylindrical filter and the discharge path that guides the solid particles separated by the cylindrical filter to the outlet through the inside of the cylindrical filter. Can get to. Furthermore, since the inlet is provided in two places, the upper lid and the case main body, the two inlets can be used properly according to the piping specifications. For example, when the pipe connected to the inflow port is not flexible, the upper cover can be easily attached and detached by using the inflow port provided in the case body. Furthermore, since the gap between the case main body and the upper lid can be sealed with a gasket, the liquid to be filtered can be sucked into the filter case to force the filtrate to flow out, thereby easily improving the filtration efficiency. Can be planned.

The filter device according to a tenth aspect of the present invention is characterized in that, in the first or second aspect, the filter case includes a connecting flange portion provided on each of an upper end portion of the case body and an outer peripheral portion of the upper lid. the a gasket disposed between the facing surfaces of the two joining flange portions has a fastening member for fastening the two joining flange portions detachably, the case body, the top of the inner surface On the opening side, it has an annular upper support part for positioning and supporting the upper mounting ring part, and an inflow pipe communicating with the inside and outside of the case body is below the annular upper support part of the case body. provided, and the inlet is provided at the distal end of the inflow tube, said support supporting unit has a support bottom wall portion which closes the lower opening, the lower portion of the case body, The case Outflow pipe is provided for communicating the interior of the outer and the support supporting portions of the body, and the outlet is provided at the distal end portion of the outlet pipe, the lower end portion of the case body along the vertical direction An upper end portion of the extending exhaust pipe is connected, and the exhaust port is provided at the lower end portion of the exhaust pipe. The cylindrical filter is attached so that one end portion thereof is folded back to the upper mounting ring portion. is, by the other end is attached to wrap the inside to the lower mounting ring, the being mounted on the outside of the filter support, the filter case, a connection of the case body with the fastening member The upper lid is attached to the case main body by fastening the flange portion and the connecting flange portion of the upper lid, and the gasket is provided between the case main body and the upper lid. By sealing, the filtration target liquid is formed so as to be sucked into the filter case, and the filtration target liquid flowing into the filter case from the inflow port moves the cylindrical filter from the outside to the inside. It is in the point formed so that it may pass.

  By adopting such a configuration, the cylindrical filter can be easily attached to the outside of the filter support, and the inflow path for guiding the liquid to be filtered from the inlet to the outside of the cylindrical filter, and the cylindrical shape Secure the outflow path that guides the filtrate after filtering through the inside of the cylindrical filter to the outlet and the discharge path that guides the solid particles separated by the cylindrical filter to the outlet through the outside of the cylindrical filter. Can get to. Furthermore, since the gap between the case main body and the upper lid can be sealed with a gasket, the filtrate can be forcibly discharged by sucking the liquid to be filtered into the filter case, facilitating improvement in filtration efficiency. Can be planned.

  A feature of the filtration device of the present invention according to claim 11 is that, when the upper lid is attached to the case body between the lower surface of the upper lid and the upper attachment ring portion in claim 9 or 10, An urging member for urging the filter support downward is provided.

  And by employ | adopting such a structure, it can prevent reliably and easily that a filter support floats.

  According to the filtration device of the present invention according to claim 1, there are excellent effects such as that the replacement frequency of the filter can be reduced.

  According to the filtration device of the present invention as set forth in claim 2, it is possible to remove the solid particles clogged in the stitches of the cylindrical filter by supplying the cleaning fluid to the inside of the filter case with the upper lid attached to the case body. Excellent effects such as.

  According to the filtration device of the present invention described in claim 3, the cylindrical filter can be easily attached to the inside of the filter support, and the inflow path for guiding the liquid to be filtered from the inlet to the inside of the cylindrical filter; An outflow path for guiding the filtrate after filtering through the cylindrical filter to the outlet through the outside of the cylindrical filter, and a discharge path for guiding solid particles separated by the cylindrical filter to the outlet through the inside of the cylindrical filter And the like.

  According to the filtering device of the present invention described in claim 4, since the cylindrical filter can be visually recognized from the outside through the observation window, the degree of clogging of the cylindrical filter can be easily understood and separated by the cylindrical filter. It has excellent effects such as easily knowing the discharge time of the solid particles.

  According to the filtering device of the present invention described in claim 5, the cylindrical filter can be easily attached to the outside of the filter support, and the inflow path for guiding the liquid to be filtered from the inlet to the inside of the cylindrical filter; An outflow path for guiding the filtrate after filtering through the cylindrical filter to the outlet through the outside of the cylindrical filter, and a discharge path for guiding solid particles separated by the cylindrical filter to the outlet through the inside of the cylindrical filter And the like.

  According to the filtering device of the present invention as set forth in claim 6, there is an excellent effect that the stitches of the cylindrical filter can be prevented from expanding and the solid particles can be prevented from passing through.

  According to the filtration device of the present invention described in claim 7, the cylindrical filter can be easily attached to the outside of the filter support, and the inflow path for leading the liquid to be filtered from the inlet to the outside of the cylindrical filter; An outflow path that guides the filtrate after filtering through the cylindrical filter to the outlet through the inside of the cylindrical filter, and a discharge path that guides solid particles separated by the cylindrical filter to the outlet through the outside of the cylindrical filter And the like.

  According to the filtration device of the present invention described in claim 8, the cylindrical filter can be clamped between the upper mounting ring portion and the pressing ring by a simple operation of mounting the upper lid to the case body. Has an effect.

  According to the filtering device of the present invention described in claim 9, the cylindrical filter can be easily attached to the inside of the filter support, and an inflow path for guiding the liquid to be filtered from the inlet to the inside of the cylindrical filter; An outflow path for guiding the filtrate after filtering through the cylindrical filter to the outlet through the outside of the cylindrical filter, and a discharge path for guiding solid particles separated by the cylindrical filter to the outlet through the inside of the cylindrical filter The two inlets can be used properly according to the piping specifications, and the filtrate can be forcibly discharged by sucking the liquid to be filtered into the filter case. There are excellent effects such as easy improvement of efficiency.

  According to the filtration device of the present invention as set forth in claim 10, the cylindrical filter can be easily attached to the outside of the filter support, and the inflow path for guiding the liquid to be filtered from the inlet to the outside of the cylindrical filter; An outflow path that guides the filtrate after filtering through the cylindrical filter to the outlet through the inside of the cylindrical filter, and a discharge path that guides solid particles separated by the cylindrical filter to the outlet through the outside of the cylindrical filter In addition, the filtration target liquid can be sucked into the filter case and the filtrate can be forced to flow out, so that it is possible to easily improve the filtration efficiency. Play.

  According to the filtering device of the present invention as set forth in claim 11, the filter support can be prevented from being lifted by a simple operation of attaching the upper lid to the case main body.

1 is a schematic cross-sectional view showing the main part of a first embodiment of a filtration device according to the present invention. 1 is an external perspective view showing the main part of the filter support of FIG. Sectional drawing which shows the modification of the filter support of FIG. 1 is an external perspective view showing another modification of the filter support of FIG. The disassembled perspective view which shows the other modification of the filter support of FIG. The top view which shows the principal part of the attachment state of the upper cover with respect to the case main body of FIG. 1 is an exploded external view showing the main part of a modification of the upper lid mounting structure of FIG. The top view which shows the vicinity of the support positioning member of FIG. The figure similar to FIG. 8 which shows the modification of the support positioning member of FIG. The schematic diagram which shows the principal part of an example of the filtration system using the filtration apparatus of FIG. The figure similar to FIG. 1 which shows the principal part of 2nd Embodiment of the filtration apparatus which concerns on this invention. The perspective view which shows the principal part of the case main body of FIG. The figure similar to FIG. 1 which shows the principal part of 3rd Embodiment of the filtration apparatus which concerns on this invention. The figure similar to FIG. 10 which shows the principal part of an example of the filtration system using the filtration apparatus of FIG. The figure similar to FIG. 1 which shows the principal part of 4th Embodiment of the filtration apparatus which concerns on this invention. The figure similar to FIG. 10 which shows the principal part of an example of the filtration system using the filtration apparatus of FIG. The figure similar to FIG. 1 which shows the principal part of 5th Embodiment of the filtration apparatus which concerns on this invention. It is a figure similar to FIG. 10 which shows the principal part of an example of the filtration system using the filtration apparatus of FIG. 17 , (a) is the case where the opening of a 1st inflow pipe is selected as an inflow port, (b) is 2nd When the opening of the inlet pipe is selected as the inlet The figure similar to FIG. 1 which shows the principal part of 6th Embodiment of the filtration apparatus which concerns on this invention. The figure similar to FIG. 10 which shows the principal part of an example of the filtration system using the filtration apparatus of FIG.

  The present invention will be described below with reference to embodiments shown in the drawings.

(First embodiment)
1 to 9 show a first embodiment of a filtration device according to the present invention.

  The filtration apparatus of this embodiment has illustrated what is used for filtration of the coolant circulated and used in a machine tool.

  As shown in FIG. 1, the filtration device 1 of the present embodiment is processed as solid particles contained in a stock solution G (see FIG. 10) that is a coolant used for cooling a processing portion in a machine tool as a liquid to be filtered. A cylindrical filter 2 as a filter medium for separating powder K (see FIG. 10), a filter support 3 to which the cylindrical filter 2 is attached, and a filter support 3 to which the cylindrical filter 2 is attached, And a filter case 4 for accommodating the length direction of the filter case 4 in the vertical direction.

  The tubular filter 2 is formed to be stretchable by a knitted stretchable yarn. This stretchable yarn is used for elastic socks, elastic stockings and the like, and is formed by combining elastic fibers (elastomer fibers) with synthetic fibers. For example, a single cover that covers polyurethane elastic fiber (spandex) as an elastic fiber with high multi-type (one filament is thinner than 1.45 denier) of synthetic fiber such as polyamide (nylon), polyester, etc. Mention may be made of ring yarns (SCY20 WN 70/48). Alternatively, it may be a double covering yarn (DCY) in which polyurethane synthetic fibers are covered with two synthetic fiber threads. A polyether ester elastic fiber may be used instead of the polyurethane elastic fiber. Further, by covering the polyurethane elastic fiber yarn with the synthetic fiber yarn, breakage or damage of the stitches by the processed powder K can be prevented in a short time. Furthermore, the elastic yarn is formed into a tubular knitted fabric by a high gauge circular knitting machine (4 inches: 400 needles) which is a sock knitting machine, and the tubular filter 2 is formed by the knitted fabric. The knitted fabric is knitted with Akasa (plain fabric) knitting, needle knitting or the like alone or in combination.

  The cylindrical filter 2 is cylindrical or flattened in a free state and is folded in two. And the outer diameter (outer periphery) in the free state of the cylindrical filter 2 is formed smaller than the inner diameter (inner periphery) of the filter support 3. Further, the length of the tubular filter 2 in the free state is slightly longer than the length of the filter support 3. The outer diameter of the cylindrical filter 2 may be equal to or larger than the inner diameter of the filter support 3, but the inner diameter of the filter support 3 is meant to be easily mounted inside the filter support 3. It is preferable to form smaller. The length of the tubular filter 2 in the free state may be equal to or shorter than the length of the tubular filter 2, but the end of the tubular filter 2 is located outside or inside the filter support 3. It is important to set the length so that it can be folded back.

  The filter support 3 is for mounting the cylindrical filter 2 and is made of plastic or metal. Examples of the plastic include vinyl chloride resin (PVC), acrylic resin, polycarbonate resin (PC), ABS resin, PET resin, acetal resin (POM), polyamide resin (PA), and FRP. Examples of the metal include steel, stainless steel, and aluminum alloy. Of course, plastic and metal may be combined.

  As shown in FIGS. 1 and 2, the filter support 3 has an upper mounting ring portion 7, a lower mounting ring portion 8 and an upper and lower connection portion 9, and is integrally formed in a cylindrical shape as a whole. Note that the shape of the filter support 3 may be a cylindrical shape as a whole. For example, the cross section may be a square tube or a polygonal square tube.

  The upper mounting ring portion 7 has an upper cylindrical base 11 formed in a cylindrical shape, and an upper flange 12 is formed on the outer periphery of the upper end of the upper cylindrical base 11 so as to extend radially outward. ing. That is, an upper flange 12 formed in an annular shape is provided on the outer periphery of the upper end portion of the upper mounting ring portion 7. In addition, a concave concave tapered surface 13 is formed in the upper portion of the inner hole of the upper mounting ring portion 7 as viewed from above and gradually increases in diameter toward the upper end. An annular groove (not shown) in which one end edge of the cylindrical filter 2 is attached by its elasticity can be provided on the outer peripheral surface of the upper cylindrical base 11. By providing this annular groove, it is possible to more reliably position the one end edge of the tubular filter 2 and prevent it from coming off. As the formation position of the annular groove, the center portion of the outer peripheral surface of the upper cylindrical base 11 can be exemplified.

  The lower mounting ring portion 8 has a lower cylindrical base 15 formed in a cylindrical shape, and a lower flange 16 has a diameter at a substantially central portion in the length direction on the outer peripheral surface of the lower cylindrical base 15. Extending outward in the direction. That is, an annular lower flange 16 is provided at the center in the length direction of the outer peripheral surface of the lower cylindrical base body 15. The inner and outer diameters of the lower cylindrical base body 15 and the outer diameter of the lower flange 16 are formed to be the same size as the inner and outer diameters of the upper cylindrical base body 11 and the outer diameter of the upper flange 12 of the upper mounting ring portion 7. Different sizes may be used. Further, an annular groove (not shown) in which the other end edge of the cylindrical filter 2 is attached by its elasticity can be provided on the outer peripheral surface of the lower cylindrical base body 15. By providing this annular groove, the positioning of the other end edge of the tubular filter 2 and the retaining can be more reliably performed. As the formation position of the annular groove, the space between the upper surface and the upper end of the lower flange 16 on the outer peripheral surface of the lower cylindrical base body 15 can be cited.

  The upper and lower connection portions 9 are for connecting the upper mounting ring portion 7 and the lower mounting ring portion 8 with a predetermined interval. The upper and lower connecting portions 9 have a plurality of vertical pillars 19 (only three are shown in FIG. 2) extending in parallel with each other along the vertical direction which is the length direction of the filter support 3. ). These vertical columns 19 are arranged at an equal angle so that the distance between two adjacent vertical columns 19 at the same distance from the axis (center line) of the filter support 3 is equal. The space between the two adjacent vertical columns 19 is a communication space that communicates between the inside and the outside. The coolant is filtered by the cylindrical filter 2 by the four communication spaces arranged in the circumferential direction. A passage opening 20 through which a certain filtrate E (see FIG. 10) passes is formed. As the cross-sectional shape of the vertical column 19, various shapes such as a sector shape, a rectangular shape, a circular shape, and a polygonal shape can be used.

  As shown in FIG. 1, the upper mounting ring portion 7 of the filter support 3 has an upper end portion that is one end portion of the cylindrical filter 2 disposed inside the filter support 3 so as to be expanded and folded outward. The lower end of the cylindrical filter 2 disposed inside the filter support 3 is attached to the lower mounting ring portion 8 so that the lower end is expanded and folded outward. Thus, the cylindrical filter 2 is mounted inside the filter support 3.

  The filter support 3 may be configured such that the upper mounting ring portion 7, the lower mounting ring portion 8 and the vertical column 19 are individually formed and joined and integrated by adhesion, welding, or the like. In this case, as the upper and lower connection part 9, the passage opening 20 may be formed in a base formed in a cylindrical shape. In this case, various shapes can be used alone or in combination as the shape of the passage opening 20. Moreover, as the filter support 3, various shapes can be used, and it is not limited to this embodiment. Modified examples of the filter support 3 are shown in FIGS.

(Modification of filter support)
FIG. 3 shows a modification of the filter support. This filter support 3a has a configuration in which most of the upper and lower connecting portions 9a are expanded radially outward by a vertical column 19a in which portions excluding both ends in the length direction are expanded radially outward. In this case, the maximum diameter of the upper and lower connecting portions 9a, to be smaller than the maximum diameter of the upper mounting ring 7 and the lower mounting ring 8, the filtrate E to be described later between the full Irutasapoto 3a and the filter case 4 pass It is preferable in the sense that the filtrate passage space 50 (see FIG. 1) can be obtained reliably. Since other configurations are the same as those of the filter support 3 shown in FIG. 2, the same reference numerals are given in the drawing, and detailed descriptions thereof are omitted.

  According to the filter support 3a having such a configuration, the internal volume of the cylindrical filter 2 can be increased.

(Other variations of filter support)
FIG. 4 shows another modification of the filter support. This filter support 3b is provided with a plurality of, in this example, three annular columns 22 that intersect with the vertical column 19 in addition to the vertical column 19, thereby forming the upper and lower connection portions 9b. 4 in the direction and 4 in the circumferential direction. Since other configurations are the same as those of the filter support 3 shown in FIG. 2, the same reference numerals are given in the drawing, and detailed descriptions thereof are omitted.

  According to the filter support 3b having such a configuration, the degree to which the cylindrical filter 2 expands radially outward can be restricted by the vertical column 19 extending in the vertical direction and the annular column 22 extending in the circumferential direction. it can.

(Still other variations of filter support)
FIG. 5 shows still another modification of the filter support. The filter support 3c has a configuration divided into three in the vertical direction. That is, the filter support 3c is divided into three parts, that is, an upper mounting ring portion 7c, a lower mounting ring portion 8c, and a vertical connection portion 9c. The upper mounting ring portion 7c, the lower mounting ring portion 8c, and the upper and lower connection portions 9c can be formed of plastic, metal, or a combination of plastic and metal.

  The upper mounting ring portion 7c has an upper cylindrical base 11c formed in a cylindrical shape. Further, the lower mounting ring portion 8c has a lower cylindrical base body 15c formed in a cylindrical shape, and radially outwardly between the lower flange 16 and the upper end surface on the outer periphery of the lower cylindrical base body 15c. Two locking pins 24 (only one is shown) formed in a columnar shape as a plurality of locking bodies projecting toward each other are provided point-symmetrically about the axis of the lower mounting ring portion 8c. The virtual outer diameter connecting the tips of these two locking pins 24 is smaller than the outer diameter of the lower flange 16. Each of the locking pins 24 can be detachably inserted into a locking groove 30 provided in a connection cylinder 29 described later. Note that the number of the locking pins 24 may be three or more. When the number of the locking pins 24 is three or more in this way, the distance between the centers of the two locking pins 24 adjacent at the same distance from the axis of the lower mounting ring portion 8c is equal. An angular arrangement is preferred. Further, the locking pin 24 may be cylindrical. Still further, the locking body is not limited to the locking pin 24, and may be a flat locking piece. Furthermore, the outer diameter of the upper cylindrical base body 11c in the upper mounting ring portion 7c is made equal to the outer diameter of the lower cylindrical base body 15c in the lower mounting ring portion 8c.

  The upper and lower connection portions 9c are arranged along a plurality of ring bodies 26 arranged at intervals in the length direction shown in the vertical direction in FIG. 5 and along the length direction for connecting these ring bodies 26. A connecting body 28 formed in a cylindrical basket shape by a plurality of connecting rods 27 and a cylindrical connecting tube 29 fixed to the inner surface of the lower end of the connecting body 28 by adhesion or welding. doing. In the connecting body portion 28, more passage openings 20c are arranged in a lattice pattern than the filter supports 3, 3a, 3b described above.

The connection tube 29 is formed with two locking grooves 30 into which the two locking pins 24 arranged in the lower mounting ring portion 8c can be inserted. These two locking grooves 30 are provided point-symmetrically about the axis of the connection cylinder 29. Each of the two locking grooves 30 includes a first insertion groove 31 that is formed upward from the lower end surface of the connection tube 29 and penetrates radially inside and outside where the locking pin 24 can be inserted. The second insertion groove 32 is formed along the circumferential direction of the connection tube 29 from the top of the insertion groove 31 and penetrates the inside and outside where the locking pin 24 can be inserted in the radial direction. The lower surface of the second insertion groove 32 is formed so as to incline downward toward the distal end separated from the first insertion groove 31. Also, the locking pin 24, that is slightly smaller than the width dimension of the locking groove 30. When the filter support 3c is removed from the filter case 4, the locking pin 24 comes into contact with the outer peripheral surface of the locking pin 24 and the upper surface of the second insertion groove 32, and the lower mounting ring portion 8c is detached from the upper and lower connection portion 9c. It is formed so that there is no. Note that the number of the locking grooves 30 may be three or more like the number of the locking pins 24. Thus, when the number of the locking grooves 30 is three or more, the equiangular arrangement is made so that the distance between the centers of the two locking grooves 30 adjacent to each other at the equidistant position from the axis of the connecting cylinder 29 is equal. It is preferable to do. Further, as the connection body portion 28, a metal or plastic net may be used. The two locking pins 24 and the two locking grooves 30 constitute connecting means 33 for detachably connecting the lower mounting ring portion 8c and the vertical connecting portion 9c. Since other configurations are the same as those of the filter support 3 shown in FIG. 2, the same reference numerals are given in the drawing, and detailed descriptions thereof are omitted.

  According to the filter support 3c having such a configuration, the upper mounting ring portion 7c, the lower mounting ring portion 8c, and the upper and lower connection portions 9c can be individually formed, so that a long one can be easily formed. Can do. Further, the connection means 33 can hold the lower mounting ring portion 8c and the upper and lower connection portions 9c in a connected state when the filter support 3c is detached from the filter case 4. Further, the connection body portion 28 in which many passage openings 20c are arranged in a lattice shape further restricts the degree of expansion of the tubular filter 2 radially outward than the above-described filter supports 3, 3a, 3b. Can do.

(Continuation of filtration device)
As shown in FIG. 1, the filter case 4 has a filter support 3 with a tubular filter 2 mounted thereon with its length direction directed in the vertical direction, that is, the upper mounting ring portion 7 is mounted on the upper and lower sides. It is for storing with the ring portion 8 facing down, and is formed of plastic or metal, like the filter support 3. Of course, plastic and metal may be combined.

  The filter case 4 includes a case main body 41, a case bottom 42, an upper lid 43, a support support 44, an inflow port 45, an outflow port 46, and a discharge port 47. A valve 48 is connected to the discharge port 47.

  In the case body 41, the filter support 3 is inserted / removed through the upper opening, and in order to form a flow path for the filtrate E, at least the outer periphery of the filter support 3 is surrounded. It is formed in a cylindrical shape having a larger diameter than the outer diameter. A space between the inner peripheral surface of the case body 41 and the outer peripheral surface of the filter support 3 is a filtrate passage space 50 for allowing the filtrate E to flow down easily. Further, the length of the case body 41 is longer than the length of the filter support 3. The case body 41 may have a cylindrical shape, and the cross section may be a square or a polygonal square tube.

  A lid support pipe 51 is provided on the upper end side of the outer peripheral surface of the case body 41. The lid support pipe 51 is arranged with its length direction along the length direction of the case main body 41. The lid support pipe 51 is fixed to the outer peripheral surface of the case body 41 by welding or adhesion.

The case bottom 42 is for closing the lower opening of the case main body 41, and is formed in an annular plate shape having a larger diameter than the outer diameter of the case main body 41. And in the predetermined position of the peripheral part outside the case main body 41 of the case bottom part 42, as shown in FIG. 6, a plurality, a book for attaching the filtration device 1 to an attachment object such as an attachment plate or an attachment stand (not shown). In the embodiment, four mounting holes 52 are formed. These mounting holes 52 are arranged at an equal angle so that the distances between the centers of the two mounting holes 52 adjacent to each other at the equidistant position from the case bottom 42 and thus the axis of the case body 41 are equal. A mounting bracket may be provided instead of the mounting hole 52. Moreover, you may provide the several leg part which is not shown in figure in order to make the filtration apparatus 1 self-support in the outer periphery vicinity of the outer side from the case main body 41 in the lower surface of the case bottom part 42. FIG.

The upper lid 43 is for covering the upper opening of the case body 41. As shown in FIG. 1, the upper lid 43 closes the cylindrical lid body 53 and the upper opening of the lid body 53. And a lid top plate 54 formed in a substantially disc shape, the lower portion is formed into a bottomed cylindrical shape having an opening as a whole. The inner diameter of the lid body 53 is formed larger than the outer diameter of the case body 41 so that the outer peripheral surface of the upper end portion of the case body 41 can be surrounded.

An inflow pipe 55 made up of a socket or the like, which is a kind of pipe joint, is disposed at the center of the lid top plate 54 along the vertical direction that is the thickness direction of the lid top plate 54. The inflow pipe 55 is formed longer than the length of the upper lid 43 shown in the vertical direction in FIG. 1, and the upper end projects upward from the upper surface of the lid top plate 54 and the lower end projects downward from the lower end of the lid body 53. Are arranged as follows. In addition, the inflow pipe 55 is welded or inserted in a state where a portion slightly above the center portion in the length direction on the outer peripheral surface is inserted into a pipe through hole 56 that is an inner hole provided in the center portion of the lid top plate 54. It is fixed without gaps by bonding or the like. The opening at the upper end of the inflow pipe 55 is an inlet 45 that guides the stock solution G into the filter case 4. The lower opening end of the inflow pipe 55 is disposed inside the upper mounting ring portion 7 of the filter support 3. That is, in the present embodiment, the inflow port 45 that guides the stock solution G to the inside of the cylindrical filter 2 is formed in the upper portion of the central portion that is the central portion of the upper lid 43. Further, at least the upper end portion of the inner hole of the inflow pipe 55 is formed with a female screw 55a for use in connection with a supply pipe 104 (see FIG. 10) of the stock solution G described later.

  On the outer peripheral portion of the lower surface of the lid top plate 54, a gasket 57 made of an annular rubber plate or the like is provided as a fixing seal for sealing between the upper opening end of the case body 41 and the upper lid 43. ing. Note that an O-ring or the like may be used as the gasket 57. Further, the lid top plate 54 may be formed so as to face the upper opening end surface of the case main body 41 with a slight gap in a state where the upper cover 43 is attached to the case main body 41 without arranging the gasket 57. You may form so that it may contact | abut with the upper opening end surface. Furthermore, the shape of the lid body 53 may be a cylindrical shape. For example, the cross section may be a square tube or a polygonal square tube.

  The bottom surface of the lid top plate 54 is formed in a cylindrical shape for preventing the filtrate E from flowing toward the position where the gasket 57 is disposed, between the upper opening end of the case body 41 and the upper lid 43. An inner wall 58 is provided. The length of the inner wall 58 shown in the vertical direction in FIG. 1 is formed longer than the length of the lid body portion 53, and the lower end surface of the inner wall 58 projects downward from the lower end surface of the lid body portion 53. Further, the inner hole of the inner wall 58 is formed to have a larger diameter than the outer diameter of the upper mounting ring portion 7, and the outer diameter of the inner wall 58 is formed to be smaller than the inner diameter of the case body 41.

  As shown in FIGS. 1 and 6, an upper portion of a lid support bar 59 that is detachably inserted into a lid support pipe 51 provided on the outer peripheral surface of the case main body 41 is welded to the outer peripheral surface of the lid body portion 53. It is fixed by bonding. Then, by inserting the lid support bar 59 into the lid support pipe 51, rotation prevention in the circumferential direction of the upper lid 43 with respect to the case body 41 and positioning in the circumferential direction of the upper lid 43 with respect to the case body 41 are performed. . Further, when the upper lid 43 is removed from the case body 41, the upper lid 43 is rotated around the lid support pipe 51 with the top end of the lid support bar 59 inserted into the lid support pipe 51 after the upper lid 43 has been lifted upward. As a result, the upper lid 43 can be held by the upper end surface of the lid support pipe 51 and thus by the case main body 41 with the upper opening of the case main body 41 exposed to the outside. Thereby, when attaching or detaching the filter support 3 with the tubular filter 2 attached to the filter case 4, the operator can easily see the upper lid 43 removed from the case main body 41, and the upper lid 43 can be seen from the case main body 41. Since it does not take time to search away from the operator, workability can be improved, that is, improvement of usability by the operator can be achieved.

  As shown in FIG. 1, on the lower surface of the lid top plate 54 of the upper lid 43, a pressing ring 60 formed in a ring shape as a whole is disposed by a rubber-like elastic body exhibiting rubber elasticity such as thermoplastic elastomer or rubber. ing. The inner hole of the pressing ring 60 is formed in a cylindrical shape and is slightly smaller than the outer diameter of the inflow pipe 55, and is formed so as to hold the inflow pipe 55. That is, the pressing ring 60 can be inserted into and removed from a portion disposed below the upper lid 43 of the inflow pipe 55, and is thereby detachably attached to the upper lid 43. Further, the pressing ring 60 is formed such that its length shown in the vertical direction in FIG. 1 is longer than the length of the lid body portion 53, and its lower end surface is arranged flush with the lower end surface of the inflow pipe 55. . Further, the outer peripheral surface of the pressing ring 60 is formed as a convex taper surface 61 that protrudes downward from the lower end and gradually increases in diameter upward. In addition, it is good also as a structure fixed by joining the upper surface of the press ring 60 to the lower surface of the lid top plate 54 by adhesion | attachment. Further, the pressing ring 60 is disposed opposite to the upper mounting ring portion 7, and when the upper lid 43 is mounted on the case body 41, the convex taper surface 61 of the pressing ring 60 is a concave taper on the inner surface of the upper mounting ring portion 7. The surface 13 is pressed. That is, the taper angles of the concave taper surface 13 and the convex taper surface 61 are made equal.

Accordingly, the upper end portion of the tubular filter 2 attached to the upper attachment ring portion 7 of the filter support 3 can be sandwiched between the convex tapered surface 61 and the concave tapered surface 13 with the upper lid 43 attached to the case body 41. It is like that. In other words, when the upper lid 43 is attached to the case main body 41, the tubular filter 2 is sandwiched between the upper attachment ring portion 7 and the pressing ring 60. The lower opening end of the inlet tube 55 is disposed inside the upper mounting ring 7 of the filter support 3.

  As shown in FIGS. 1 and 6, the upper lid 43 and the case main body 41 are detachably attached with a snap catch (catch clip) 65 as a known snap lock. That is, as is well known, one of the two sets of snap catches 65, for example, an engaging side member, a spring and an operating lever is attached to the outer peripheral surface of the case body 41, On the outer peripheral surface of the lid body portion 53, the other side of the snap catch 65, for example, a receiving side member 65b provided with a hooking piece to be hooked on the hooking portion is attached.

In the present embodiment, the operation side member 65 a of the snap catch 65 and the lid support pipe 51 are arranged on the outer peripheral surface of the case body 41 so as to face each other with the axis of the case body 41 as the center. The receiving member 65b of the snap catch 65 and the lid support bar 59 are arranged on the outer peripheral surface of the lid body 53 so as to face each other with the center line of the upper lid 43 as the center. Note that the number of sets of the snap catches 65 may be two or more. In the case where such a plurality of sets of snap catches 65 are provided, it is preferable that the two snap catches 65 adjacent to each other at an equidistant position from the center line of the case main body 41 are arranged at an equal angle so that the distance between the centers is equal. . Of course, as the number of sets of the snap catches 65 increases, the labor and time required for the operation increase.

  Therefore, the upper lid 43 and the case main body 41 are detachably formed with one touch by at least one snap catch 65. The upper lid 43 only needs to be detachably attached to the case body 41 in order to cover the upper opening of the case body 41. Further, the upper lid 43 and the case main body 41 may be detachably attached by one touch with another configuration such as a one touch joint instead of the snap catch 65. The one-touch joint can be selected from various configurations such as a bayonet type, a clamp type, and a slide type as required according to the design concept. A modification of the upper lid mounting structure for detachably mounting the upper lid 43 to the case body 41 is shown in FIG.

(Modification of upper lid mounting structure)
FIG. 7 shows a modification of the upper lid mounting structure. This upper lid attachment structure 70 is formed in the same manner as the attachment structure of the lower attachment ring portion 8c and the connection cylinder 29 of the upper and lower connection portions 9c in the filter support 3c shown in FIG. That is, as shown in FIG. 7, two locking pins 71 (only one of them) are formed on the upper part of the outer peripheral surface of the case body 41 as a plurality of locking bodies protruding radially outward. Are provided point-symmetrically about the axis of the case body 41. The lid body 53 of the upper lid 43 is formed with two locking grooves 72 (only one is labeled) into which each of the two locking pins 71 can be inserted. These two locking grooves 72 are provided point-symmetrically about the axis of the lid body portion 53.

  Each of the two locking grooves 72 is formed upward from the lower end surface of the lid body portion 53 and has a first insertion groove 72a that penetrates radially inside and outside where the locking pin 71 can be inserted. The second insertion groove 72b is formed along the circumferential direction of the lid body 53 from the top of the insertion groove 72a and penetrates radially inside and outside where the locking pin 71 can be inserted. The lower surface of the second insertion groove 72b is formed so as to incline downward toward the distal end separated from the first insertion groove 72a.

  The locking pin 71 is formed to be smaller than the width dimension of the locking groove 72, and is formed so that the lower surface of the upper lid 43 comes into contact with the upper end surface of the case body 41 via the gasket 57. Further, a rotatable rotating ring 73 is attached to the upper portion of the inflow pipe 55 protruding above the lid top plate 54, and the base end portion of the lid supporting rod 59 a is fixed to the outer peripheral surface of the rotating ring 73. Has been. The lid support bar 59a is extended radially outward from the outer peripheral surface of the rotary ring 73, and extended downward along the outer periphery of the lid body 53 from the horizontal portion 59aa and the tip of the horizontal portion 59aa. The vertical portion 59ab forms an inverted L-shaped bar as a whole. And the front-end | tip part shown to the downward direction of FIG. 9 of the vertical part 59ab is inserted in the lid | cover support pipe 51. As shown in FIG. Since other configurations are the same as the configurations using the snap catch 65 described above, the same reference numerals are given in the drawing, and detailed descriptions thereof are omitted.

  According to the upper lid attachment structure 70 having such a configuration, the upper lid 43 can be attached to and detached from the case main body 41 with one touch, similarly to the case where the snap catch 65 shown in FIG. 1 is used.

(Continuation of filtration device)
As shown in FIG. 1, an outflow pipe 81 that communicates the inside and the outside of the case body 41 is provided at the lower portion of the outer peripheral surface of the case body 41 with its tip end directed radially outward . The outflow pipe 81 is formed of a socket or the like which is a kind of pipe joint, and is welded or bonded in a state where the base end portion is inserted into the outflow through hole 82 provided in the lower portion of the outer peripheral surface of the case body 41. It is fixed without any gaps. And the opening of the front-end | tip part shown to the right of FIG. 1 of the outflow pipe 81 is made into the outflow port 46 for making filtrate E flow out outside. That is, in this embodiment, the outlet 46 is provided below the inlet 45. In addition, a female screw 81a for use in connection with an outlet pipe 105 (see FIG. 10) for a filtrate E described later is formed at least at the tip of the inner hole of the outlet pipe 81.

  The support support portion 44 is for supporting the filter support 3 from below, and as shown in FIG. 1, a large-diameter cylindrical portion 85 formed in a cylindrical shape shown in the upper part of FIG. A cylindrical small-diameter cylindrical portion 86 is formed into a stepped cylindrical shape that is coaxially connected by a connecting cylindrical portion 87 having an upper portion having a large diameter and a lower portion having a small diameter. And the support support part 44 is arrange | positioned with the large diameter cylinder part 85 facing up, and the length direction is turned up and down.

The outer diameter of the large-diameter cylindrical portion 85 is smaller than the inner diameter of the case body 41. In addition, the inner diameter of the large diameter cylindrical portion 85 is formed larger than the outer diameter of the lower cylindrical base 15 of the lower mounting ring portion 8, and the cylindrical filter 2 is attached to the opening of the large diameter cylindrical portion 85. The lower portion of the lower mounting ring portion 8 of the filter support 3 is inserted, and the lower surface of the lower flange 16 is in contact with the upper end surface of the large-diameter cylindrical portion 85 via the cylindrical filter 2. Further, the large-diameter cylindrical portion 85 is disposed inside the case main body 41, and the lower end portion of the large-diameter cylindrical portion 85 is inserted into the support supporting through hole 89 provided in the center portion of the case bottom portion 42. In the state, it is fixed without any gap by welding or adhesion. In other words, the support support portion 44 has a connecting cylinder portion 87 and a small-diameter cylinder portion 86 which are lower portions thereof project through the case bottom portion 42 and protrude below the case main body 41, and a lower-diameter cylinder portion 86 which is a lower end portion of the support support portion 44. The opening at the lower end is an outlet for discharging the filter cake R (see FIG. 10), which is the processed powder K separated by the cylindrical filter 2 and deposited inside the support support 44 and inside the cylindrical filter 2. 47. Therefore, the discharge port 47 is disposed below the outflow port 46. That is, the inlet 45 is formed at the uppermost part of the filter case 4, the outlet 46 is formed at the lower part of the outer peripheral surface of the filter case 4, and the outlet 47 is formed at the lowermost part of the filter case 4.

  The connection position between the support support portion 44 and the case bottom portion 42 is not limited to the large-diameter cylindrical portion 85, but may be the connecting cylindrical portion 87 or the small-diameter cylindrical portion 86. Further, the support support portion 44 may be formed in a uniform cylindrical shape as a whole. Further, as the support support portion 44, a cylindrical small diameter portion (not shown) is connected to the upper end portion of the large diameter cylindrical portion 85 by a step portion, and this cylindrical small diameter portion is inserted into the inner surface of the lower mounting ring portion 8. The lower end surface of the lower mounting ring portion 8 may be brought into contact with the portion, and the filter support 3 may be supported from below.

  The outlet 47 is connected to an inlet of a valve 48 that is normally closed. The connection between the discharge port 47 and the valve 48 may be directly connected by screwing or the like, or may be connected via a pipe joint such as a nipple or a socket.

  As the valve 48, a stop valve (stop valve) such as a gate valve (gate valve), a globe valve (ball valve), a butterfly valve (butterfly valve), a ball valve, or a pinch valve can be used. It is preferable to use a ball valve or a pinch valve in the sense that the path diameter is large and the machining powder K as the filter cake R can flow smoothly. In this embodiment, a manual ball valve is used. Of course, an automatic operation type that can be opened and closed by an electric signal may be used. A shutter may be used instead of the valve 48. However, it is important to reliably prevent leakage to the outside when the shutter is closed.

A support positioning member 91 for positioning the center of the large diameter cylindrical portion 85 with respect to the center of the case main body 41 is disposed between the outer peripheral surface of the large diameter cylindrical portion 85 and the inner surface of the case main body 41. . The support positioning member 91 is fixed to the outer peripheral surface of the large-diameter cylindrical portion 85 and / or the inner surface of the case body 41 by welding or adhesion. Further, as shown in FIG. 8, the support positioning member 91 has a ring main body 91a formed in an annular shape, and the filtrate E that has flowed down the filtrate passage space 50 passes downward through the ring main body 91a. A lower passage port 91b composed of a plurality of through holes penetrating in the thickness direction is provided. The support positioning member 91 is not necessarily provided. The support positioning member 91 may be any member that can fix the support support portion 44 inside the case body 41. A modification of the support positioning member 91 is shown in FIG.

(Modification of support positioning member)
FIG. 9 shows a modification of the support positioning member. The support positioning member 92 has a plurality of, in this example, four connecting rods 92a. These four connecting rods 92a have a length direction in the left-right direction (horizontal direction) orthogonal to the length direction shown in the up-down direction of FIG. 1 of the case body 41, and the axis of the large-diameter cylindrical portion 85, As a result, the two connecting rods 92a adjacent to each other at an equidistant position from the axis of the case body 41 are arranged at an equal angle of 90 degrees so that the distance between them is equal. And the space | interval which makes the planar fan shape between the adjacent connection rods 92a is made into the lower passage port 92b. According to the support positioning member 92 having such a configuration, the plane area of the lower passage port 92b, that is, the flow path area through which the filtrate E passes can be increased, so that the filtrate E can flow more smoothly.

(Filtration system)
Here, an example of a filtration system using the filtration device of the present embodiment will be described with reference to FIG.

  As shown in FIG. 10, the filtration system 100 of the present embodiment includes the above-described filtration device 1 of the present embodiment, a coolant tank 101, a collection container 102, and a pump 103. Further, the coolant tank 101 includes a supply liquid storage unit 101a that stores filtrate E (including unused coolant) that is a filtered coolant as a coolant to be supplied to the machine tool, and a machine tool as a liquid to be filtered. A stock solution storage unit 101b that stores the stock solution G that is the recovered coolant after use. In the stock solution storage portion 101b, one end of a suction pipe 104a constituting a part of the supply pipe 104 is disposed below the liquid level, and the other end of the suction pipe 104a is connected to a suction port (not shown) of the pump 103. Has been. In addition, one end of a delivery pipe 104 b that constitutes the other part of the supply pipe 104 is connected to a discharge port (not shown) of the pump 103, and the other end of the delivery pipe 104 b is connected to the inlet 45 of the filtration device 1. The stock solution G stored in the stock solution storage unit 101b can be pumped to the filtration device 1. Further, one end of an outflow pipe 105 for guiding the filtrate E to the supply liquid storage unit 101a is connected to the outlet 46 of the filtration device 1. In addition, as the supply piping 104 and the outflow piping 105, flexible piping members, such as a hose, can be used. In particular, when the delivery pipe 104b is a flexible pipe, the top cover 43 can be easily attached to and detached from the case main body 41 without removing the delivery pipe 104b and the supply pipe 104 from the upper lid 43.

  The collection container 102 is for collecting the filter cake R which is the processed powder K separated and deposited by the cylindrical filter 2 of the filtration device 1, and is disposed at the outlet 47 (see FIG. 1) of the filtration device 1. It is disposed below the outlet of the connected valve 48. The outlet of the valve 48 may be connected to one end of a discharge pipe (not shown) for guiding the filter cake R to the collection container 102. Furthermore, it is good also as a structure which arrange | positions the belt conveyor for conveying the filter cake R to the collection | recovery container 102 arrange | positioned in the position away from the coolant tank 101 under the valve | bulb 48. FIG. In addition, by using the valve 48 as an automatic operation valve, the filter cake R can be discharged automatically every preset usage time.

  Next, the operation of the present embodiment having the above-described configuration will be described.

  First, the filtration operation by the filtration system 100 using the filtration device 1 of the present embodiment will be described.

  In the filtration system 100 using the filtration device 1 of the present embodiment, the stock solution G stored in the stock solution storage unit 101b of the coolant tank 101 is sucked from the suction pipe 104a by driving the pump 103, and is pumped through the inside of the delivery pipe 104b. And supplied to the inlet 45 of the filtration device 1. Then, the stock solution G supplied to the inlet 45 of the filtration device 1 passes through the inside of the inflow pipe 55 from below to flow into the inside of the cylindrical filter 2. That is, in the filtration device 1 of the present embodiment, an inflow path is provided so as to guide the stock solution G from the inlet 45 to the inside of the cylindrical filter 2.

  Next, the stock solution G flowing into the cylindrical filter 2 passes through the cylindrical filter 2 from the inside toward the outside. When this undiluted solution G passes through the cylindrical filter 2, the processed powder K having a predetermined size or more contained in the undiluted solution G is separated by a filtering action. That is, when the stock solution G passes through the cylindrical filter 2 from the inside to the outside along the radial direction, the processing powder K having a predetermined size, for example, 20 μm or more contained in the stock solution G is captured by the stitches of the tubular filter 2. Will be separated. And the filtrate E which passed the cylindrical filter 2 passes the passage opening 20, the filtrate passage space 50, and the lower passage port 91b in this order, and flows out from the outflow port 46. FIG. That is, in the filtration device 1 of the present embodiment, an outflow path is provided so as to guide the filtrate E after being filtered by the cylindrical filter 2 to the outlet 46 through the outside of the cylindrical filter 2. Then, the filtrate E flowing out from the outlet 46 passes through the outflow pipe 105 and is sent to the supply liquid storage unit 101 a of the coolant tank 101.

  On the other hand, the processed powder K separated by the cylindrical filter 2 is sequentially deposited and filtered starting from the lower end portion of the support support portion 44 provided with the discharge port 47, more specifically the flow path blocking position (not shown) of the valve 48 at the head. It becomes a lump R and reaches the inside of the cylindrical filter 2. That is, the filtration device 1 of the present embodiment is provided with a discharge path so as to guide the processed powder K separated by the cylindrical filter 2 to the discharge port 47 through the inside of the cylindrical filter 2. Then, the filter cake R accumulated above the discharge port 47 and thus inside the cylindrical filter 2 is recovered in the recovery container 102 by opening the valve 48 connected to the discharge port 47. Of course, the operation of the valve 48 is performed in a state where the supply of the stock solution G to the inlet 45 by the pump 103 is stopped. Further, when the filter cake R is discharged, the stock solution G is present together with the filter cake R in the support support portion 44, so that the filter cake R can be discharged smoothly.

  Here, the exchange method of the cylindrical filter 2 in the filtration apparatus 1 of this embodiment is demonstrated.

  When replacing the cylindrical filter 2 in the filtration device 1 of the present embodiment, the operation lever of the snap catch 65 is operated to remove the operation side member 65a from the reception side member 65b and fasten the upper lid 43 to the case body 41. After releasing the state, the upper lid 43 is moved upward. Then, when the upper lid 43 is being moved upward, that is, when the lower end of the inflow pipe 55 is exposed above the case body 41, the upper lid 43 is rotated about 180 degrees and then moved downward. Then, the upper lid 43 is supported from below by the upper end portion of the lid support pipe 51 with the upper opening of the case body 41 exposed to the outside. Thereby, the state in which the upper lid 43 is supported by the case main body 41 is maintained, and both hands of the operator are freed.

  Next, the filter support 3 with the tubular filter 2 attached is moved upward to remove the filter support 3 from the case body 41, and thus the filter case 4.

  Next, the used cylindrical filter 2 is removed from the filter support 3, and then a new cylindrical filter 2 is attached to the filter support 3, or a new filter support 3 with a new cylindrical filter 2 attached is installed. Then, the exchange of the tubular filter 2 is completed by performing an operation reverse to the operation of pulling out the filter support 3. At this time, since the upper lid 43 is supported by the case body 41, the upper lid 43 can be easily attached. The discharge time of the filter cake R can be determined by whether or not a preset use time has been reached.

  Thus, according to the filtration apparatus 1 of this embodiment, the cylindrical filter 2 can isolate | separate the processing powder K which is solid more than the predetermined magnitude | size contained in the stock solution G by the stitch.

Further, according to the filtration device 1 of the present embodiment, the cylindrical filter 2 expands radially outward with the progress of clogging due to the accumulation of the processed powder K separated from the cylindrical filter 2. The stitches of No. 2 can be enlarged to reduce the filtration function and the flow rate. Note that the maximum extension of the cylindrical filter 2 is regulated by the maximum extension of the cylindrical filter 2 and the upper and lower connecting portions 9 of the filter support 3.

  Furthermore, according to the filtration device 1 of the present embodiment, even when the stitches of the cylindrical filter 2 are enlarged, the filter cake R accumulated inside the cylindrical filter 2 functions as a filter, so that the initial state as a whole The filtration function can be maintained over a long period of time.

Furthermore, according to the filtration device 1 of the present embodiment, the processing powder K contained in the stock solution G is in a lower end portion where the discharge port 47 of the support support portion 44 is provided. Are sequentially deposited from the bottom to the inside of the cylindrical filter 2, so that the cylindrical filter 2 is deposited in order from the lower end side inside the cylindrical filter 2. since stitch extends from the lower portion side in the radial direction is enlarged, it can be reduce and decline in the flow rate of the filtering function, even when clogging of the lower portion of the cylindrical filter 2, the cylindrical filter 2 Since the filtration function is held by the upper part which is not clogged, the initial filtration function as a whole can be held for a long time.

  Therefore, according to the filtration apparatus 1 of this embodiment, the stable filtration function can be exhibited over a long period of time.

   Furthermore, according to the filtration device 1 of the present embodiment, since the valve 48 that is normally closed is connected to the discharge port 47, the cylindrical filter 2 is removed by a simple method of opening the valve 48. Therefore, the filter cake R deposited inside the support support portion 44 and the cylindrical filter 2 can be easily and reliably discharged to the outside. As a result, the filter cake R can be discharged to the outside without removing the tubular filter 2, so that the replacement frequency of the tubular filter 2 can be reliably reduced. In addition, when discharging the filter cake R by opening the valve 48, since the stock solution G existing inside the support support portion 44 is also discharged together with the filter cake R at the initial discharge of the filter cake R, smooth fluidity is achieved. Can be secured.

  Therefore, according to the filtration apparatus 1 of this embodiment, the lifetime of the cylindrical filter 2 can be made longer than the conventional one using a bag-like filter. That is, according to the filtration device 1 of the present embodiment, the frequency of replacement of the filter can be further reduced as compared with the conventional one.

  Moreover, according to the filtration apparatus 1 of this embodiment, since the inflow port 45 is formed in the upper cover 43, the undiluted | stock solution G can be smoothly flowed into the inside of the cylindrical filter 2 reliably.

  Furthermore, according to the filtration device 1 of the present embodiment, the outflow port 46 is formed between the lower end portion of the case main body 41 and the position where the support positioning member 91 is disposed, and thus has passed through the cylindrical filter 2. The filtrate E can be smoothly and reliably discharged outside.

  Furthermore, according to the filtration device 1 of the present embodiment, the pressing ring 60 formed of a rubber-like elastic body that sandwiches the cylindrical filter 2 between the lower surface of the upper lid 43 and the inner surface of the upper mounting ring portion 7 is provided. Therefore, the cylindrical filter 2 can be securely fixed.

  Furthermore, according to the filtration device 1 of the present embodiment, since the discharge port 47 is provided below the outflow port 46, the filter cake R can be discharged smoothly and reliably.

  Therefore, according to the filtration device 1 of the present embodiment, it is possible to easily improve the usability for the operator.

Further, according to the filtration device 1 of the present embodiment, the inflow port 45 is provided at the upper end of the inflow pipe 55 provided in the upper lid 43, and the outflow port 46 is disposed in the lower end portion of the case body 41 and the support positioning member 91. Since the discharge port 47 is provided at the lower end portion of the support support portion 44, the stock solution G is filtered through the cylindrical filter 2 and the inflow path that guides the stock solution G into the cylindrical filter 2. The outflow path through which the subsequent filtrate E flows out to the outside and the discharge path through which the filter cake R deposited inside the cylindrical filter 2 is discharged to the outside can be reliably distinguished.

  In addition, according to the filtration device 1 of the present embodiment, the upper lid 43 and the case main body 41 are detachably formed by the snap catch 65 with one touch, so that the upper lid 43 and the case main body 41 can be easily and reliably attached and detached. Can be done.

  Furthermore, according to the filtration device 1 of the present embodiment, the lid support pipe 51 and the lid support bar 59 are provided. Therefore, when the upper lid 43 is attached to the case main body 41, the lid support pipe 51 is attached to the lid support pipe 59. Can be prevented from rotating along the circumferential direction of the upper lid 43 with respect to the case main body 41. As a result, the positioning in the circumferential direction between the operation side member 65a and the receiving side member 65b of the snap catch 65 can be easily and reliably made appropriate. Thereby, the operativity of the snap catch 65 improves.

  Furthermore, according to the filtration device 1 of the present embodiment, since the stretchable yarn constituting the cylindrical filter 2 is used for elastic socks, elastic stockings and the like, an existing yarn can be used. The cost of the cylindrical filter 2 can be easily reduced.

  Further, according to the filtration device 1 of the present embodiment, the upper flange 12 formed in an annular shape is provided on the outer periphery of the upper mounting ring portion 7 of the filter support 3, and the outer circumference of the lower mounting ring portion 8 is long. Since the lower flange 16 formed in an annular shape is provided in the central portion in the vertical direction, and the lower surface of the lower flange 16 is supported from below by the upper end portion of the large-diameter cylindrical portion 85 of the support support portion 44, the cylindrical filter The filter support 3 in a state where 2 is mounted can be reliably supported and accommodated inside the filter case 4 with its length direction directed in the vertical direction.

  Furthermore, according to the filtration device 1 of the present embodiment, the upper part of the cylindrical filter 2 is sandwiched between the concave tapered surface 13 of the filter support 3 and the convex tapered surface 61 of the pressing ring 60, so that the cylindrical filter 2 Since the lower portion is sandwiched between the lower surface of the lower flange 16 of the filter support 3 and the upper end portion of the support support portion 44, the cylindrical filter 2 can be prevented from falling off the filter support 3.

(Second Embodiment)
11 and 12 show a second embodiment of the filtration device according to the present invention. The filtration device 120 of this embodiment is configured so that the cylindrical filter 2 can be visually recognized from the outside.

  In other words, the filter case 121 of the filtration device 120 of the present embodiment includes a case main body 123 having an observation window 122 and an inner case 124 attached to the inside of the case main body 123.

The case main body 123 has a predetermined distance between a lower cylindrical portion 125 formed in a cylindrical shape with metal, an upper cylindrical portion 126 formed in a cylindrical shape with metal, and a lower cylindrical portion 125 and an upper cylindrical portion 126. And a plurality of connecting members 127 formed in a square bar shape having a rectangular cross section by a metal for connecting with a. Each connecting member 127 has a lower end portion fixed to the upper side of the outer peripheral surface of the lower cylindrical portion 125 by bonding or welding, and an upper end portion bonded or welded to the lower end portion of the outer peripheral surface of the upper cylindrical portion 126. It is fixed by. That is, the connecting member 127 is arranged such that the length direction shown in the vertical direction in FIGS. 11 and 12 is parallel to the axis of the case main body 123. In the present embodiment, six connection members 127 are used so as to extend in parallel to each other. These six connecting members 127 are arranged at an equal angle with an interval so that the distances between the two connecting members 127 adjacent to each other at an equidistant position from the axis of the case main body 123 are equal.

A portion where the connecting member 127 is not disposed between the lower tube portion 125 and the upper tube portion 126 is a communication space that communicates the inside and the outside. By this communication space, the inner case in the present embodiment. A viewing window 122 through which the cylindrical filter 2 can be visually recognized from the outside is configured. That is, Zokimado 122 of Ru visible the cylindrical filter 2 from the outside through the transparent inner case 124 is provided in the trunk portion of the case body 123. Of course, the outside is the outside of the filtering device 120. Therefore, the observation window 122 can easily visualize the cylindrical filter 2. The connecting member 127 may be a round bar. As the connecting members 127 may be tubular with a plurality of holes communicating the inside and outside in the radial direction (thickness direction). In this case, it is important to set the size of the hole so that the inside can be easily visually recognized. Further, the case body 123 may be formed of plastic.

In the filter case 121, the upper lid 43 and the case main body 123 are detachably attached with two sets of snap catches 65 (only one is shown in FIG. 12). These two sets of snap catches 65 are provided point-symmetrically about the axis of the case body 123. The lid support pipe 51 and the lid support bar 59 are arranged in a direction perpendicular to the arrangement direction of the two snap catches 65 when viewed from above.

  The inner case 124 is made of a transparent plastic such as acrylic resin (acrylic ester resin, methacrylic ester resin), polycarbonate resin, ABS resin, and is formed in a cylindrical shape having a larger diameter than the outer diameter of the filter support 3. A space between the inner peripheral surface of the inner case 124 and the outer peripheral surface of the filter support 3 is a filtrate passage space 128 through which the filtrate E passes. The inner case 124 is supported from below by the upper surface of the support positioning member 91. In addition, the length of the inner case 124 is formed longer than the length of the filter support 3. The shape of the inner case 124 may be a cylindrical shape. For example, the cross section may be a square tube or a polygonal square tube. A mark (not shown) serving as a mark for recognizing the discharge time of the filter cake R can be provided on the outer peripheral surface of the inner case 124. As this mark, the structure which sticks a red tape cyclically | annularly along the circumferential direction to the preset position of the inner case 124 can be mentioned.

  Since other configurations are the same as those of the filtration device 1 of the first embodiment described above, the same reference numerals are given to the main parts in the drawings, and detailed descriptions thereof are omitted. Moreover, since the filtration system using the filtration apparatus 120 of this embodiment is the same as that of the filtration system 100 (refer FIG. 10) mentioned above, it abbreviate | omits about the detailed description.

  According to the filtration device 120 of the present embodiment having such a configuration, the same effect as that of the filtration device 1 of the first embodiment described above can be obtained, and the cylindrical filter 2 can be externally provided by the observation window 122. Since it can be visually recognized easily and reliably, the degree of clogging of the cylindrical filter 2 can be easily understood, and the discharge timing of the filter cake R separated and deposited by the cylindrical filter 2 can be easily understood.

(Third embodiment)
FIG. 13 shows a third embodiment of the filtration device according to the present invention. The filtration device 140 according to the present embodiment has the cylindrical filter 2 mounted on the outside of the filter support 3. Further, in the filtration device 140 of the present embodiment, the supply port 143 for guiding the cleaning fluid C for removing clogging of the cylindrical filter 2 to the case main body 142 of the filter case 141 is provided above the outlet 46. It is provided. Examples of the cleaning fluid C include air (compressed air) and various cleaning liquids.

  That is, in the filtration device 140 of the present embodiment, the filter support 3 is attached to the upper mounting ring portion 7 so that the upper end portion, which is one end portion of the cylindrical filter 2 disposed outside the filter support 3, is folded inward. Further, the lower mounting ring portion 8 is attached so that the lower end portion, which is the other end portion of the cylindrical filter 2 disposed outside the filter support 3, is folded inward. A cylindrical filter 2 is attached to the outside of the tube. Further, four communication spaces (see FIG. 2) communicating between the inside and the outside provided between the two vertical columns 19 adjacent to the filter support 3 respectively pass through openings 144 (see FIG. 13) through which the stock solution G passes. Only two are shown). A space between the inner peripheral surface of the case main body 142 and the outer peripheral surface of the tubular filter 2 is a filtrate passage space 145 for allowing the filtrate E to flow down easily.

Between the inner peripheral surface of the case main body 142 and the outer peripheral surface of the cylindrical filter 2, even if the cylindrical filter 2 expands radially outward, the stitches of the cylindrical filter 2 expand and the machining powder K passes through. A cylindrical net 146 formed in a cylindrical shape by a metal or plastic for preventing the state from being turned on is disposed. The lower end of the cylindrical net 146 is supported from below by a support positioning member 91 (see FIG. 8). Further, by positioning the upper end portion of the cylindrical mesh body 146 inside the inner wall 58, the cylindrical mesh body 146 is positioned so as to be substantially coaxial with the case main body 142.

A supply pipe 147 that communicates the inside and the outside of the case body 142 is provided at the upper part of the outer peripheral surface of the case body 142 with its tip end directed radially outward . The supply pipe 147 is formed from a socket or the like which is a kind of pipe joint, and is welded or bonded in a state where a base end portion is inserted into a supply through-hole 148 provided in an upper portion of the outer peripheral surface of the case main body 142. It is fixed without any gaps. And the opening of the front-end | tip part shown to the right of FIG. 13 of the supply pipe | tube 147 removes clogging of the cylindrical filter 2, ie, the washing | cleaning for dropping the processing powder K caught on the stitch of the cylindrical filter 2 below The supply port 143 is used to guide the fluid C to the inside. That is, in the present embodiment, the supply port 143 is provided below the inflow port 45 and above the outflow port 46. Further, a female screw 147a for use in connection with a cleaning pipe 151 (see FIG. 14) for supplying the cleaning fluid C is formed at least at the tip of the inner hole of the supply pipe 147. Examples of the cleaning fluid C include air and various cleaning liquids.

In the filtration device 140 of this embodiment, the upper lid 43 and the case main body 142 are not shown in FIG. 13, but are arranged in a point symmetry with respect to the axis of the case main body 142 in the direction perpendicular to the plane of FIG. The snap catch 65 (see FIG. 1) is detachable. The lid support pipe 51 and the lid support bar 59 are arranged in a direction orthogonal to the arrangement direction of the two sets of snap catches 65, that is, at a position rotated 90 degrees around the axis of the filter case 141. .

  Since other configurations are the same as those of the filtration device 1 of the first embodiment described above, the same reference numerals are given to the main parts in the drawings, and detailed descriptions thereof are omitted.

(Filtration system)
Here, an example of a filtration system using the filtration device of the present embodiment will be described with reference to FIG.

  As shown in FIG. 14, the filtration system 150 of the present embodiment includes the above-described filtration device 140 of the present embodiment, the coolant tank 101, the recovery container 102, and the pump 103. Further, the supply port 143 of the filtration device 140 is connected to a cleaning on-off valve 152 in which one end of a cleaning pipe 151 for guiding a cleaning fluid C such as air or cleaning liquid to the inside of the filter case 141 is normally closed. It is connected. The other end of the cleaning pipe 151 is connected to the supply source 155 of the cleaning fluid C. When air (compressed air) is used as the cleaning fluid, the air pipe installed in the factory serves as the supply source 155. When the cleaning liquid is used, a cleaning pump (not shown) that sucks and discharges the cleaning liquid is used. Discharge port. The delivery pipe 104b is connected to the inflow port 45 through an inflow on-off valve 153 that is normally open, and the outflow pipe 105 is connected to the outflow port 46 through an outflow on-off valve 154 that is normally open. Connected with.

  Since other configurations are the same as those of the filtration system 100 shown in FIG. 10 described above, the same reference numerals are given to the main parts in the drawings, and detailed descriptions thereof are omitted.

According to the filtration system 150 using the filtration device 140 of the present embodiment, the stock solution G stored in the stock solution storage unit 101b of the coolant tank 101 is sucked from the suction pipe 104a by the drive of the pump 103, and the inside of the delivery pipe 104b. Is supplied to the inlet 45 of the filtering device 140 through the inflow opening / closing valve 153 that is normally opened. Then, the stock solution G supplied to the inlet 45 of the filtration device 140 passes through the inside of the inflow pipe 55 from the upper side to the lower side, and flows into the filter support 3 and thus the cylindrical filter 2 . Ie, the filtering device 1 40 of this embodiment has the inflow path is provided to guide the stock solution G from the inlet 45 to the inside of the cylindrical filter 2.

  Next, the stock solution G that has flowed into the cylindrical filter 2 passes through the passage opening 144 and then passes through the cylindrical filter 2 from the inside toward the outside. When this undiluted solution G passes through the cylindrical filter 2, the processed powder K having a predetermined size or more contained in the undiluted solution G is separated by a filtering action. That is, when the stock solution G passes through the cylindrical filter 2 from the inside to the outside along the radial direction, the processing powder K having a predetermined size, for example, 20 μm or more contained in the stock solution G is captured by the stitches of the tubular filter 2. Will be separated.

  Then, the filtrate E that has passed through the cylindrical filter 2 passes through the filtrate passage space 145 and the lower passage port 91b (see FIG. 8) of the support positioning member 91 in this order, and flows out from the outlet 46. That is, the outflow path is provided in the filtration device 140 of the present embodiment so as to guide the filtrate E after being filtered by the cylindrical filter 2 to the outlet 46 through the outside of the cylindrical filter 2. Then, the filtrate E flowing out from the outflow port 46 passes through the outflow pipe 105 via the outflow on-off valve 154 that is normally open, and is sent to the supply liquid storage unit 101a of the coolant tank 101 (see FIG. 14).

  On the other hand, the processed powder K separated by the cylindrical filter 2 is sequentially deposited and filtered starting from the lower end portion of the support support portion 44 provided with the discharge port 47, more specifically the flow path blocking position (not shown) of the valve 48 at the head. It becomes a lump R and reaches the inside of the cylindrical filter 2. That is, the filtration device 140 of the present embodiment is provided with a discharge path so as to guide the processed powder K separated by the cylindrical filter 2 to the discharge port 47 through the inside of the cylindrical filter 2. Then, the filter cake R accumulated above the discharge port 47 and thus inside the cylindrical filter 2 is collected in the collection container 102 by opening the valve 48 connected to the discharge port 47 (FIG. 14). reference).

Further, the cylindrical filter 2 can be cleaned by supplying the cleaning fluid C into the filter case 141 through the supply port 143 simultaneously with discharging the filter cake R or after discharging the filter cake R. it can. That is, when the cleaning fluid C is supplied to the inside of the filter case 141, the processing powder K caught by the stitches due to the vibration of the cylindrical filter 2 falls down and is recovered in the recovery container 102 together with the cleaning fluid C. Of course, when air is used as the cleaning fluid C, only the processing powder K is recovered in the recovery container 102, and when the cleaning liquid is used, the cleaning liquid is recovered in the recovery container 102 together with the processing powder K. Become. At this time, the cleaning on / off valve 152 is opened, and the inflow on / off valve 153 and the outflow on / off valve 154 are closed to prevent the cleaning fluid C from flowing into the delivery pipe 104b and the outflow pipe 105. be able to. Of course, the dirt of the cylindrical filter 2 can be removed by using the cleaning liquid.

According to the filtration device 140 of the present embodiment having such a configuration, the same effect as the filtration device 1 of the first embodiment described above can be obtained, and the cleaning fluid C can be filtered through the supply port 143 into the filter case. Since the processing powder K clogged in the stitches of the tubular filter 2 can be removed without removing the tubular filter 2 by a simple method of supplying to the 141, the replacement frequency of the tubular filter 2 is reduced. can do. As a result, the lifetime of the filter can be extended and the convenience for the operator can be further improved. Further, according to the filtration device 140 of the present embodiment, the cylindrical filter 2 can be easily attached to the outside of the filter support 3, and the inflow path that guides the stock solution G from the inlet 45 to the inside of the cylindrical filter 2. And an outflow path for leading the filtrate E to the outlet 46 through the outside of the cylindrical filter 2 , and a discharge path for guiding the processed powder K separated by the cylindrical filter 2 to the outlet 47 through the inside of the cylindrical filter 2. And can be definitely obtained. Furthermore, the cylindrical mesh body 146 of the filtration device 140 of the present embodiment can prevent the processed powder K from passing through even if the stitches of the cylindrical filter 2 are enlarged.

(Fourth embodiment)
FIG. 15 shows a fourth embodiment of the filtration device according to the present invention. The filtration device 160 according to the present embodiment has the cylindrical filter 2 mounted on the outside of the filter support 3. In addition, the filtration device 160 of the present embodiment is provided with an inflow port 45 in the upper part of the outer peripheral surface of the case main body 162 of the filter case 161, and the cleaning fluid C for removing clogging of the tubular filter 2 in the upper lid 43. A supply port 143 for guiding is provided.

  That is, the filtration device 160 of the present embodiment is similar to the filtration device 140 of the third embodiment described above, and the cylindrical filter 2 disposed outside the filter support 3 is disposed on the upper mounting ring portion 7 of the filter support 3. The lower end of the cylindrical filter 2 disposed outside the filter support 3 is inwardly attached to the lower mounting ring portion 8. The cylindrical filter 2 is attached to the outside of the filter support 3. Further, four communication spaces (see FIG. 2) communicating between the two vertical columns 19 adjacent to the filter support 3 between the inside and the outside pass through openings 144 (see FIG. 15) through which the filtrate E passes. Only two are shown). And the inside of the filter support 3 is made into the filtrate passage space 165 for making the filtrate E flow down easily. Further, a space between the inner peripheral surface of the case main body 162 and the outer peripheral surface of the cylindrical filter 2 is a powder passage space 166 for guiding the processed powder K separated from the stock solution G downward.

An inflow pipe 55 that communicates the inside and the outside of the case main body 162 is provided at the upper part of the outer peripheral surface of the case main body 162 with its tip end directed radially outward . The inlet pipe 55 is formed of such a socket which is a kind of pipe joint, welding or adhesion in a state where the base end portion on the through hole 167 provided in the upper portion of the outer peripheral surface of the case body 162 is inserted It is fixed without any gaps. The opening at the tip of the inflow pipe 55 on the right side of FIG. 15 is an inlet 45 for guiding the stock solution G into the filter case 161.

The support support part 170 of the filter case 161 has a support bottom wall part 171 that closes the lower opening thereof, and the upper part is formed in a bottomed cylindrical shape having an opening. An outflow pipe 81 that communicates the inside and the outside of the case main body 162 is provided at the lower portion of the outer peripheral surface of the case main body 162 with its tip end directed radially outward . The outflow pipe 81 is formed of a socket or the like which is a kind of pipe joint, and a state in which a substantially central portion in the length direction thereof is inserted into a lower through-hole 173 provided in a lower portion of the outer peripheral surface of the case main body 162. It is fixed without gaps by welding or bonding. The base end portion of the outlet pipe 81 is fixed without clearance due welding or an adhesive in a state of being inserted into the outflow through-holes 174 provided in the lower portion of the outer peripheral surface of the support the support portion 170. And the opening of the front-end | tip part shown to the right of FIG. 15 of the outflow pipe 81 is made into the outflow port 46 for making filtrate E flow out outside. That is, in this embodiment, the outlet 46 is provided below the inlet 45.

  A discharge pipe 176 extending in the vertical direction is provided at the lower end of the case body 162. The discharge pipe 176 has an upper end connected to the lower end of the case body 162, a tapered cylindrical connection discharge cylinder 177 having a large diameter at the top and a small diameter at the bottom, and the connection discharge cylinder 177. And a cylindrical small-diameter discharge cylinder portion 178 extending downward from the lower end. A lower opening of the small-diameter discharge cylinder portion 178, that is, an opening at the lower end portion of the discharge pipe 176 shown in FIG. 15 is a discharge port 47 for discharging the filter cake R to the outside. That is, in the present embodiment, the discharge port 47 is provided below the outflow port 46.

  At the center of the lid top plate 54 of the upper lid 43 that is detachably attached to the case main body 162, a supply pipe comprising a socket or the like that is a kind of pipe joint along the vertical direction that is the thickness direction of the lid top plate 54. 147 is disposed. The supply pipe 147 is formed to be longer than the length of the upper lid 43 shown in the vertical direction in FIG. 15, the upper end protrudes above the upper surface of the lid top plate 54, and the lower end is below the lower opening end of the lid body 53. It is arranged to protrude. Further, the supply pipe 147 is welded or welded in a state where a portion slightly above the center portion in the length direction on the outer peripheral surface is inserted into a pipe through hole 56 which is an inner hole provided in the center portion of the lid top plate 54. It is fixed without gaps by bonding or the like. The opening at the upper end of the supply pipe 147 removes clogging of the cylindrical filter 2, that is, guides the cleaning fluid C for dropping the processing powder K caught by the stitches of the cylindrical filter 2 to the inside. Supply port 143. That is, in the present embodiment, the supply port 143 is provided above the inflow port 45. A female screw 147a for use in connection with the cleaning fluid 151 for cleaning fluid C (see FIG. 16) is formed at least at the upper end of the inner hole of the supply tube 147.

Therefore, in the filtration device 160 of the present embodiment, the supply port 143 is provided at the uppermost part of the filter case 161, the inflow port 45 is provided at the upper part of the outer peripheral surface of the filter case 161, and the lower part of the outer peripheral surface of the filter case 161. The outlet 46 is provided at the bottom, and the outlet 47 is provided at the lowermost part of the filter case 161.

  In the filtration device 160 of the present embodiment, a support positioning member 92 having a plurality of connecting rods 92a is used (see FIG. 9). In this case, the lower passage port 92b (see FIG. 9) allows the processed powder K separated by the cylindrical filter 2 to pass downward.

In the filtration device 160 of the present embodiment, the upper lid 43 and the case main body 162 are point-symmetric about the axis of the case main body 162 in the direction perpendicular to the paper surface of FIG. 15, similarly to the filtration device 140 of the third embodiment described above. It is made detachable by two sets of snap catches 65 (see FIG. 1) not shown in FIG. The lid support pipe 51 and the lid support bar 59 are arranged in a direction orthogonal to the arrangement direction of the two sets of snap catches 65, that is, at a position rotated 90 degrees around the axis of the filter case 141. .

  A case mounting plate 179 formed in an annular shape having an outer diameter larger than the outer diameter of the case main body 162 is fixed to the outer periphery of the lower end portion of the case main body 162 by welding or adhesion. The case attachment plate 179 has a plurality of attachment holes 52 (see FIG. 5) for attaching the filtration device 160 to an attachment object such as an attachment plate or a mounting base (not shown), as in the filtration device 1 of the first embodiment described above. 6) is formed. A mounting bracket may be provided instead of the mounting hole 52. Moreover, you may provide the several leg part which is not shown in figure for making the filtration apparatus 160 self-supported in the lower surface of the case attaching plate 179.

  Since other configurations are the same as those of the filtration device 1 of the first embodiment and the filtration device 140 of the third embodiment described above, the same reference numerals are given to the main parts in the drawings, and detailed description thereof will be given. Is omitted.

(Filtration system)
Here, an example of a filtration system using the filtration device of the present embodiment will be described with reference to FIG.

  As shown in FIG. 16, the filtration system 180 of the present embodiment includes the above-described filtration device 160 of the present embodiment, the coolant tank 101, the recovery container 102, and the pump 103. Further, one end of a cleaning pipe 151 for guiding a cleaning fluid C such as air or cleaning liquid to the inside of the filter case 161 is connected to the supply port 143 of the filtration device 160 via a cleaning on-off valve 152. The other end of the cleaning pipe 151 is connected to the supply source 155 of the cleaning fluid C.

  Since other configurations are the same as those of the filtration system 150 shown in FIG. 14 described above, the same reference numerals are given to the main parts in the drawings, and detailed descriptions thereof are omitted.

  According to the filtration system 180 using the filtration device 160 of the present embodiment, the stock solution G supplied to the inlet 45 of the filtration device 160 by driving the pump 103 moves the inside of the inflow pipe 55 from the radially outer side to the center side. Passes and flows outside the cylindrical filter 2. That is, in the filtration device 160 of the present embodiment, an inflow path is provided so as to guide the stock solution G from the inflow port 45 to the outside of the cylindrical filter 2. Then, the stock solution G supplied to the outside of the cylindrical filter 2 passes through the cylindrical filter 2 from the outside toward the inside. When this undiluted solution G passes through the cylindrical filter 2, the processed powder K having a predetermined size or more contained in the undiluted solution G is separated by a filtering action. That is, when the stock solution G passes through the cylindrical filter 2 from the outside to the inside, the processing powder K having a predetermined size, for example, 20 μm or more contained in the stock solution G is captured and separated by the stitches of the tubular filter 2. become.

  Then, the filtrate E that has passed through the cylindrical filter 2 passes through the passage opening 144 and the filtrate passage space 165 in this order, and flows out from the outlet 46. That is, the outflow path is provided in the filtration device 160 of the present embodiment so as to guide the filtrate E after being filtered by the cylindrical filter 2 to the outlet 46 through the inside of the cylindrical filter 2. And the filtrate E which flows out from the outflow port 46 passes the outflow piping 105 via the on-off on-off valve 154 always opened, and is sent to the supply liquid storage part 101a of the coolant tank 101 (refer FIG. 16).

  On the other hand, the processed powder K separated by the cylindrical filter 2 is sequentially deposited starting from the lower end of the discharge pipe 176, specifically the flow path blocking position (not shown) of the valve 48, and becomes a filter cake R. It will lead to the inside. That is, the filtration device 160 of the present embodiment is provided with a discharge path so as to guide the processed powder K separated by the cylindrical filter 2 to the discharge port 47 through the outside of the cylindrical filter 2. Then, the filter cake R accumulated above the discharge port 47 and thus inside the cylindrical filter 2 is collected in the collection container 102 by opening the valve 48 connected to the discharge port 47 (FIG. 16). reference).

Also, the cylindrical filter 2 is cleaned by supplying the cleaning fluid C to the inside of the filter case 141 through the supply port 143 simultaneously with discharging the filter cake R or after discharging the filter cake R. Can do. That is, when the cleaning fluid C is supplied to the inside of the filter case 141, the machining powder K caught by the stitches due to vibration of the cylindrical filter 2 falls down and is recovered together with the cleaning fluid C in the recovery container 102. Of course, when air is used as the cleaning fluid C, only the processing powder K is recovered in the recovery container 102, and when the cleaning liquid is used, the cleaning liquid is recovered in the recovery container 102 together with the processing powder K. Become. At this time, the cleaning on / off valve 152 is opened, and the inflow on / off valve 153 and the outflow on / off valve 154 are closed to prevent the cleaning fluid C from flowing into the delivery pipe 104b and the outflow pipe 105. be able to. Since cylindrical filter 2 is retracted from the lower portion radially inward with the progress of the clogging by the deposition of separate machining dust K of the cylindrical filter 2, is expanding stitches of the tubular filter 2, A decrease in filtration function and a decrease in flow rate can be reduced.

  According to the filtration device 160 of the present embodiment having such a configuration, the same effect as the filtration device 1 of the first embodiment described above can be obtained, and the cleaning fluid C can be filtered through the supply port 143 into the filter case. Since the processing powder K clogged in the stitches of the cylindrical filter 2 can be removed without removing the cylindrical filter 2 by a simple method of supplying to the 161, the replacement frequency of the cylindrical filter 2 is reduced. can do. As a result, the lifetime of the filter can be extended and the convenience for the operator can be further improved. Further, according to the filtration device 160 of the present embodiment, the cylindrical filter 2 can be easily attached to the outside of the filter support 3, and the inflow path that guides the stock solution G from the inlet 45 to the outside of the cylindrical filter 2. An outflow path for leading the filtrate E to the outlet 46 through the inside of the cylindrical filter 2, and a discharge path for guiding the processed powder K separated by the cylindrical filter 2 to the outlet 47 through the outside of the cylindrical filter 2. And can be definitely obtained.

(Fifth embodiment)
FIG. 17 shows a fifth embodiment of the filtration device according to the present invention. The filtration device 200 according to the present embodiment has a cylindrical filter 2 mounted inside a filter support 203. Further, the filtration device 200 of the present embodiment enables the stock solution G to be sucked into the filter case 204. Further, the filtration device 200 of the present embodiment is provided with an inlet 45 on the upper lid 230 of the filter case 204 and the upper part of the case main body 205 so that the inlet 45 can be selectively used. This is a supply port 143 for guiding the cleaning fluid C for removing clogging to the inside.

  That is, in the filter support 203 of the filtration device 200 of the present embodiment, the upper flange 12 provided in the upper attachment ring portion 7 is formed to have a larger diameter than the lower flange 16 provided in the lower attachment ring portion 8. Moreover, the concave hole 13 provided in the inner hole of the upper mounting ring part 7 of the filter support 3 described above is not formed in the inner hole of the upper mounting ring part 7, and the upper cylindrical base 11 and the lower cylinder are formed. Both the bases 15 are formed in a cylindrical shape. And the upper cylindrical base | substrate 11 and the lower cylindrical base | substrate 15 are connected by the up-and-down connection part 9 which consists of the four vertical pillars 19, and the two adjacent vertical pillars 19 connect inside and outside. The four communication spaces arranged in the circumferential direction constitute a passage opening through which the filtrate E (not shown in the figure) passes (see reference numeral 20 in FIG. 2).

  Similarly to the filtration device 1 of the first embodiment described above, the upper mounting ring portion 7 of the filter support 203 has an upper end portion that is one end portion of the cylindrical filter 2 disposed outside the filter support 203 on the outside. The lower attachment ring portion 8 is attached so that the lower end portion, which is the other end portion of the cylindrical filter 2 disposed outside the filter support 203, is folded outward. Thus, the tubular filter 2 is mounted inside the filter support 203. A space between the inner peripheral surface of the case body 205 and the outer peripheral surface of the tubular filter 2 is a filtrate passage space 206 for allowing the filtrate E to flow down easily.

  On the inner surface of the case main body 205 of the present embodiment, an upper support ring 211 formed in an annular shape with a predetermined interval from the upper opening end of the case main body 205, for example, an interval of about 30 mm, is formed by welding or bonding. It is firmly fixed. The inner hole of the upper support ring 211 is smaller than the outer diameter of the upper flange 12 and larger than the outer diameter of the lower flange 16. Further, an annular receiving groove 212 having a rectangular cross section communicating with the inner hole is formed on the inner hole side of the upper surface of the upper support ring 211, and a flange receiving ring 213 is detachably attached to the annular receiving groove 212. It is installed.

  The outer diameter of the flange receiving ring 213 is slightly smaller than the outer diameter of the annular receiving groove 212, and the inner diameter is substantially equal to the inner diameter of the upper support ring 211. An annular support groove 214 having a rectangular cross section communicating with the inner hole is formed on the inner hole side of the upper surface of the flange receiving ring 213, and the annular support groove 214 has an upper flange 12 of the filter support 203. An outer peripheral portion (a portion having a larger diameter than the lower flange 16) is detachably mounted. The outer diameter of the annular support groove 214 is larger than the outer diameter of the upper flange 12 by at least the thickness of the tubular filter 2. Then, by mounting the outer peripheral portion of the upper flange 12 so as to be supported from below by the annular support groove 214, the upper flange 12 can be positioned in the radial direction, and can be positioned outward with respect to the upper mounting ring portion 7. The folded portion of the tubular filter 2 attached so as to be folded can be sandwiched between the lower surface of the upper flange 12 and the bottom surface of the annular support groove 214.

Between the lower surface of the flange receiving ring 213 to the bottom surface and facing the previous verge shaped receiving groove 212, O-ring 215 as a gasket is disposed. The O-ring 215 is attached to the rectangular cross section of the seal mounting groove 216 provided on the bottom surface of the annular receiving groove 212. In addition, various things, such as a square ring, can be used as a gasket.

  The upper support ring 211 and the flange receiving ring 213 constitute an annular upper support portion 217 for positioning and supporting the upper mounting ring portion 7 provided on the upper opening side of the case body 205 of the present embodiment. In addition, as the annular upper support portion 217, the upper support ring 211 and the flange receiving ring 213 may be integrated.

Between the upper opening of the case main body 205 and the position where the annular upper support portion 217 is disposed, a second inflow pipe 218 that communicates the inside and the outside of the case main body 205 is provided with its tip end directed radially outward. Yes. The second inflow pipe 218 is formed of such a socket which is a kind of pipe joint welding in a state where the base end portion on the through hole 167 provided in the upper portion of the outer peripheral surface of the case body 205 is inserted Alternatively, it is fixed without gaps by bonding or the like. The opening at the tip of the second inlet pipe 218 shown on the right side of FIG. 17 is an inlet 45 or a supply port 143. Further, a female screw 218a for use in connection with the supply pipe 104 or the cleaning pipe 151 (see FIG. 18) is formed at least at the tip of the inner hole of the second inflow pipe 218.

A case flange 220 as a connecting flange portion extending radially outward is provided at an upper opening end of the case body 205, and a case taper surface 221 is formed at the lower outer corner of the case flange 220. Is formed. Further, an O-ring 222 as a gasket is disposed on the upper surface of the case flange 220. The O-ring 222 is mounted to the seal mounting groove 223 provided on the upper surface of the case flange 220.

  The upper lid 230 of the present embodiment is formed in a disk shape from metal, and the outer peripheral portion of the upper lid 230 is a cover flange 231 as a connecting flange portion disposed to face the case flange 220. A cover taper surface 232 is formed at the upper outer corner of the cover flange 231. The cover taper surface 232 and the case taper surface 221 are provided symmetrically about the opposing surface of the cover flange 231 and the case flange 220. Further, on the lower surface of the upper lid 230, a fitting convex portion 233 that is fitted into the upper opening of the case main body 205 is provided. Furthermore, the outer diameter of the cover flange 231 is formed to be equal to the outer diameter of the case flange 220.

  Furthermore, a first inflow pipe 234 made of a socket or the like, which is a kind of pipe joint, is disposed in the central portion of the upper lid 230 along the vertical direction that is the thickness direction of the upper lid 230. The length of the first inflow pipe 234 is longer than the thickness of the upper lid 230 shown in the vertical direction in FIG. 17, the upper end protrudes above the upper surface of the upper lid 230, and the lower end is below the lower surface of the upper lid 230. It is arranged to protrude. In addition, the first inflow pipe 234 has a gap by welding or bonding in a state where the center portion in the length direction on the outer peripheral surface is inserted into the pipe through hole 235 which is an inner hole provided in the center portion of the upper lid 230. It is firmly fixed.

The opening at the upper end of the first inflow pipe 234 has an inlet 45 for guiding the stock solution G to the inside of the filter case 204 or a cleaning fluid C for removing clogging of the cylindrical filter 2 inside the filter case 204. The supply port 143 is led to the Further, at least the upper end portion of the inner bore of the first inlet pipe 234, the internal thread 234a for use in connection with the cleaning pipe 151 of the supply pipe 104 or cleaning fluid C, the stock solution G (see FIG. 18) is formed Has been. Furthermore, the lower end portion of the first inflow pipe 234 is disposed so as to face the region where the opening of the upper mounting ring portion 7 is formed.

Therefore, in the filtering device 200 of the present embodiment, the inlet 45 or the supply port 143 is provided at the uppermost part of the filter case 204, and the inlet 45 or the supply port 143 is provided at the upper part of the outer peripheral surface of the filter case 204. An outlet 46 is provided at the lower part of the outer peripheral surface of the filter case 204, and an outlet 47 is provided at the lowermost part of the filter case 204.

  The case main body 205 and the upper lid 230 are not the snap catch 65 in the filtration device 1 of the first embodiment described above, but a V-band shaft joint that is a well-known fastener capable of detachably connecting a pipe in the axial direction. 236 is detachably attached. Examples of the V-band shaft coupling 236 include V-band coupling (trade name, manufactured by Yokohama Rubber Co., Ltd.).

  A compression spring 237 as a biasing member that biases the filter support 203 downward between the lower surface of the upper lid 230 and the upper flange 12 with the upper lid 230 attached to the upper opening end of the case body 205. Is arranged. Then, with the upper lid 230 attached to the upper opening end of the case body 205, the filter support 203 is biased downward by the spring force (biasing force) of the compression spring 237, so that the upper portion of the cylindrical filter 2 is While sandwiched between the upper mounting ring portion 7, the lower portion of the cylindrical filter 2 can be sandwiched between the lower flange 16 and the upper opening end of the support support portion 44. The urging member may be configured such that a plurality of elastic bodies such as compression springs or rubber are arranged concentrically on the upper surface of the upper flange 12. Further, the urging member has the same function as the pressing ring 60 in the filtration device 1 of the first embodiment described above in the sense that the cylindrical filter 2 is sandwiched between the upper mounting ring portion 7. .

  Although the case body 205 and the upper lid 230 can be formed of plastic, the case body 205 is provided in the sense that the pressure resistance of the filter case 204 when the pressure inside the filter case 204 is reduced can be obtained easily and reliably. The upper lid 230 is preferably made of metal.

  Since other configurations are the same as those of the filtration device 1 of the first embodiment described above, the same reference numerals are given to the main parts in the drawings, and detailed descriptions thereof are omitted.

(Filtration system)
Here, an example of a filtration system using the filtration device of the present embodiment will be described with reference to FIG.

As shown in FIG. 18, the filtration system 240 of this embodiment includes the above-described filtration device 200 of this embodiment, the coolant tank 101, the recovery container 102, and the pump 103. In the stock solution storage unit 101 b, one end of the supply pipe 104 is disposed below the liquid level, and the other end of the supply pipe 104 is connected to the inlet 45 of the filtration device 200. In addition, one end of a suction pipe 105 a constituting a part of the outflow pipe 105 is connected to the outlet 46 of the filtration device 200, and the other end of the suction pipe 105 a is connected to a suction port (not shown) of the pump 103. ing. One end of a discharge pipe 105b that constitutes the other part of the outflow pipe 105 is connected to a discharge port (not shown) of the pump 103, and the other end of the discharge pipe 105b is disposed above the supply liquid storage section 101a. ing.

  And by driving the pump 103, the inside of the filter case 204 of the filtration device 200 can be depressurized via the suction pipe 105a, so that the stock solution G is sucked into the filtration device 200 via the supply pipe 104, The filtrate E can be led to the supply liquid storage part 101a through the outflow pipe 105. Further, one end of a cleaning pipe 151 for guiding the cleaning fluid C to the inside of the filter case 204 is connected to the supply port 143 of the filtration device 200 via a cleaning on-off valve 152 that is normally closed.

  Here, which of the opening of the first inflow pipe 234 and the opening of the second inflow pipe 218 is selected as the inflow port 45 is selected according to the piping specification. When the opening of the first inflow pipe 234 is selected as the inflow port 45, the supply pipe 104 is connected to the first inflow pipe 234 and the second inflow pipe 218 is washed as shown in FIG. The piping 151 for work will be connected. When the opening of the second inflow pipe 218 is selected as the inflow port 45, as shown in FIG. 18B, a cleaning pipe 151 is connected to the first inflow pipe 234, and the second inflow pipe 218 is connected to the second inflow pipe 218. The supply pipe 104 is connected.

  Since other configurations are the same as those of the filtration systems 150 and 180 shown in FIGS. 14 and 16 described above, the same reference numerals are given to the main parts in the drawings, and detailed descriptions thereof are omitted.

  According to the filtration system 240 using the filtration device 200 of the present embodiment, by driving the pump 103, the inside of the filter case 204 of the filtration device 200 is depressurized via the suction piping 105a. Then, the stock solution G is sucked into the filtration device 200. The stock solution G supplied to the inlet 45 of the filtration device 200 passes through the first inflow pipe 234 from the upper side to the lower side, or passes through the second inflow pipe 218 from the radially outer side to the center side. It flows into the inside of the cylindrical filter 2. That is, the inflow path is provided in the filtration device 200 of the present embodiment so as to guide the stock solution G from the inflow port 45 to the inside of the cylindrical filter 2. The stock solution G supplied to the inside of the cylindrical filter 2 passes through the cylindrical filter 2 from the inside toward the outside. When this undiluted solution G passes through the cylindrical filter 2, the processed powder K having a predetermined size or more contained in the undiluted solution G is separated by a filtering action. That is, when the stock solution G passes through the cylindrical filter 2 from the inside to the outside, the processing powder K having a predetermined size, for example, 20 μm or more, contained in the stock solution G is captured and separated by the stitches of the tubular filter 2. become.

  The filtrate E that has passed through the cylindrical filter 2 passes through the passage opening (see reference numeral 20 in FIG. 2), the filtrate passage space 206, the lower passage opening (see reference numeral 91b in FIG. 8 or reference numeral 92b in FIG. 9), and the outflow pipe. It passes through the inside of 81 in this order and flows out from the outlet 46. In other words, the filtration device 200 of the present embodiment is provided with an outflow path so as to guide the filtrate E after being filtered by the cylindrical filter 2 to the outlet 46 through the outside of the cylindrical filter 2. And the filtrate E which flows out from the outflow port 46 passes the suction piping 105a, the pump 103, and the discharge piping 105b, and is sent to the supply liquid storage part 101a of the coolant tank 101 (refer FIG. 18).

  On the other hand, the processed powder K separated by the cylindrical filter 2 is sequentially deposited and filtered starting from the lower end portion of the support support portion 44 provided with the discharge port 47, more specifically the flow path blocking position (not shown) of the valve 48 at the head. It becomes a lump R and reaches the inside of the cylindrical filter 2. That is, the filtration device 200 of the present embodiment is provided with a discharge path so that the processed powder K separated by the cylindrical filter 2 is guided to the discharge port 47 through the inside of the cylindrical filter 2. Then, the filter cake R accumulated above the discharge port 47 and thus inside the cylindrical filter 2 is collected in the collection container 102 by opening the valve 48 connected to the discharge port 47 (FIG. 18). reference).

  Also, the cylindrical filter 2 is cleaned by supplying the cleaning fluid C to the inside of the filter case 204 through the supply port 143 simultaneously with discharging the filter cake R or after discharging the filter cake R. Can do. That is, when the cleaning fluid C is supplied to the inside of the filter case 204, the processed powder K caught by the stitches by the vibration of the cylindrical filter 2 falls down and is collected in the collection container 102. Of course, when air is used as the cleaning fluid C, only the processed powder K is recovered in the recovery container 102. At this time, the cleaning on-off valve 152 is opened, and the inflow on-off valve 153 and the outflow on-off valve 154 are closed to prevent the cleaning fluid C from flowing into the supply pipe 104 and the suction pipe 105a. be able to.

According to the filtration device 200 of the present embodiment having such a configuration, the same effect as the filtration device 1 of the first embodiment described above can be obtained, and the cylindrical filter 2 can be easily provided inside the filter support 203. An inflow path that guides the stock solution G from the inflow port 45 to the inside of the cylindrical filter 2, and a filtrate E that has been filtered by the cylindrical filter 2 through the outside of the cylindrical filter 2. An outflow path that leads to 46 and a discharge path that guides the processed powder K separated by the cylindrical filter 2 to the discharge port 47 through the inside of the cylindrical filter 2 can be obtained reliably. Furthermore, according to the filtration device 200 of the present embodiment, since the inflow ports 45 are provided at two locations of the upper lid 230 and the case main body 205, the two inflow ports 45 can be selectively used according to the piping specifications. For example, when the supply pipe 104 that is a pipe connected to the inflow port 45 does not have flexibility, the opening of the second inflow pipe 218 provided in the case main body 205 is used as the inflow port 45. The upper lid 230 can be easily attached and detached. Furthermore, according to the filtration device 200 of the present embodiment, the space between the case main body 205 and the upper lid 230 can be sealed by the O-ring 222, so the stock solution G is sucked into the filter case 204 to obtain the filtrate E. Since it can be forced to flow out, the filtration efficiency can be easily improved.

(Sixth embodiment)
FIG. 19 shows a sixth embodiment of the filtration device according to the present invention. The filtration device 250 according to the present embodiment has the cylindrical filter 2 mounted on the outside of the filter support 203. Further, the filtration device 250 of the present embodiment enables the stock solution G to be sucked into the filter case 254. Further, the filtration device 250 according to the present embodiment is provided with an inflow port 45 in the case main body 255 and a supply port 143 in the upper lid 256.

  That is, the filtration device 250 of the present embodiment has the filter support 203 in the filtration device 200 of the fifth embodiment described above. And like the filter device 160 of 4th Embodiment mentioned above, the upper end part which is the one end part of the cylindrical filter 2 arrange | positioned outside the filter support 203 is inside the upper mounting ring part 7 of the filter support 203 inside. The lower end of the cylindrical filter 2 disposed outside the filter support 203 is attached to the lower mounting ring portion 8 so that the lower end portion is folded inside. Thus, the cylindrical filter 2 is attached to the outside of the filter support 203. Further, the two vertical columns 19 adjacent to the filter support 203 are connected to each other as communication spaces between the inside and the outside, and the four communication spaces arranged in the circumferential direction each have a passage opening through which the filtrate E passes. 257 (only two are shown in FIG. 19). The inside of the filter support 203 is a filtrate passage space 258 for allowing the filtrate E to flow down easily. A space between the inner peripheral surface of the case body 255 and the outer peripheral surface of the cylindrical filter 2 is a powder passage space 259 for guiding the processing powder K separated from the stock solution G downward at least.

  On the inner surface of the case main body 255 of the present embodiment, an upper support ring 261 formed in an annular shape with a predetermined interval from the upper opening end of the case main body 255, for example, an interval of about 30 mm, is formed by welding or bonding. It is firmly fixed. The inner hole of the upper support ring 261 is smaller than the outer diameter of the upper flange 12 and larger than the outer diameter of the lower flange 16. An annular receiving groove 262 having a rectangular cross section communicating with the inner hole is formed on the inner hole side of the upper surface of the upper support ring 261. A flange receiving ring 263 is detachably attached to the annular receiving groove 262. It is installed.

The outer diameter of the flange receiving ring 263 is slightly smaller than the outer diameter of the annular receiving groove 262, and the inner diameter is substantially equal to the inner diameter of the upper support ring 261. An annular support groove 264 having a rectangular cross section communicating with the inner hole is formed on the inner hole side of the upper surface of the flange receiving ring 263, and the annular support groove 264 is formed on the upper flange 12 of the filter support 203. An outer peripheral portion (a portion having a larger diameter than the lower flange 16) is detachably mounted. The outer diameter of the annular support groove 264 is larger than the outer diameter of the upper flange 12 by at least the thickness of the tubular filter 2. Then, the outer peripheral portion of the upper flange 12 by attaching to support from below by the annular support groove 264, it is possible to position the radial direction of the upper flange 12, the inner side with respect to the upper mounting ring 7 The folded portion of the cylindrical filter 2 attached so as to be folded back can be sandwiched between the lower surface of the upper flange 12 and the bottom surface of the annular support groove 264.

Between the front bottom surface of the verge-shaped receiving groove 262 and the lower surface of the flange receiving ring 263 facing the, O-ring 265 as a gasket is disposed. The O-ring 265 is attached to the rectangular cross section of the seal mounting groove 266 provided on the bottom surface of the annular receiving groove 262. In addition, various things, such as a square ring, can be used as a gasket.

  The upper support ring 261 and the flange receiving ring 263 constitute an annular upper support portion 267 for positioning and supporting the upper mounting ring portion 7 provided on the upper opening side of the case body 255 of this embodiment. In addition, as the annular upper support portion 267, the upper support ring 261 and the flange receiving ring 263 may be integrated.

An inflow pipe 55 that communicates the inside and the outside of the case body 255 is provided at the upper part of the outer peripheral surface of the case body 255 and below the annular upper support part 267 with its tip end directed radially outward . The inlet pipe 55 is formed of such a socket which is a kind of pipe joint, welding or adhesion in a state where the base end portion on the through hole 167 provided in the upper portion of the outer peripheral surface of the case body 255 is inserted It is fixed without any gaps. And the opening of the front-end | tip part shown to the right of FIG. A female screw 55a for use in connection with the supply pipe 104 (see FIG. 20) is formed at least at the tip of the inner hole of the inflow pipe 55.

A case flange 270 as a connecting flange portion extending radially outward is provided at an upper opening end of the case main body 255, and a case taper surface 271 is provided at a lower outer peripheral corner portion of the case flange 270. Is formed. Further, an O-ring 272 as a gasket is disposed on the upper surface of the case flange 270. The O-ring 272 is mounted to the seal mounting groove 273 provided on the upper surface of the case flange 270.

  The upper lid 256 of this embodiment is formed in a disk shape from metal, and the outer peripheral portion of the upper lid 256 is a cover flange 275 as a connecting flange portion disposed to face the case flange 270. A cover taper surface 276 is formed on the outer peripheral upper corner of the cover flange 275. The cover taper surface 276 and the case taper surface 271 are provided symmetrically about the opposing surface of the cover flange 275 and the case flange 270. Further, a fitting convex portion 277 that is fitted into the upper opening of the case main body 255 is provided on the lower surface of the upper lid 256. Further, the outer diameter of the cover flange 275 is formed to be equal to the outer diameter of the case flange 270.

  Furthermore, a supply pipe 147 made up of a socket or the like, which is a kind of pipe joint, is disposed at the center of the upper lid 256 along the vertical direction that is the thickness direction of the upper lid 256. The supply pipe 147 has a length longer than the thickness of the upper lid 256 shown in the vertical direction in FIG. 19, and the upper end projects upward from the upper surface of the upper lid 256 and the lower end projects downward from the lower surface of the upper lid 256. Are arranged as follows. In addition, the supply pipe 147 is fixed without gaps by welding or adhesion in a state where the central portion in the length direction on the outer peripheral surface is inserted into the pipe through-hole 278 which is an inner hole provided in the center portion of the upper lid 256. Has been.

The opening at the upper end of the supply pipe 147 serves as a supply port 143 for guiding the cleaning fluid C that removes clogging of the cylindrical filter 2 to the inside of the filter case 254. Further, at least the upper end portion of the inner bore of the supply tube 147 is internally threaded 147a for use in connection with the cleaning pipe 151 of cleaning fluid C (see FIG. 20) is formed. Furthermore, the lower end portion of the supply pipe 147 is disposed so as to face the region where the opening of the upper mounting ring portion 7 is formed.

Therefore, in the filtration device 250 of the present embodiment, the supply port 143 is provided at the uppermost part of the filter case 254, the inlet 45 is provided at the upper part of the outer peripheral surface of the filter case 254, and the lower part of the outer peripheral surface of the filter case 254 The outlet 46 is provided at the bottom, and the outlet 47 is provided at the lowermost part of the filter case 254.

  The case body 255 and the upper lid 256 are detachable in the axial direction instead of the snap catch 65 in the filtration device 1 of the first embodiment, like the filtration device 200 (FIG. 17) of the fifth embodiment. It is detachably attached by a V-band shaft joint 279 which is a well-known fastener that can be connected to the joint. Examples of the V-band shaft joint 279 include V-band coupling (trade name, manufactured by Yokohama Rubber Co., Ltd.).

  Between the lower surface of the upper lid 256 and the upper flange 12, in a state where the upper lid 256 is attached to the upper opening end of the case main body 255, a cylindrical shape as a biasing member that biases the filter support 203 downward. A formed rubber cylinder 280 is disposed. The inner hole of the rubber cylinder 280 is formed to be slightly smaller than the outer diameter of the supply pipe 147, and is formed so as to hold the supply pipe 147. That is, the rubber cylinder 280 can be inserted into and removed from a portion disposed below the upper cover 256 of the supply pipe 147, and is thereby detachably attached to the upper cover 256.

  Then, with the upper lid 256 attached to the upper opening end of the case body 255, the upper portion of the tubular filter 2 is urged by urging the filter support 203 downward by the rubber elasticity (biasing force) of the rubber tube 280. While sandwiched between the upper mounting ring portion 7, the lower portion of the cylindrical filter 2 can be sandwiched between the lower flange 16 and the upper opening end of the support support portion 170. Note that an elastic body such as a compression spring may be used as the urging member. Further, the urging member has the same function as the pressing ring 60 in the filtration device 1 of the first embodiment described above in the sense that the cylindrical filter 2 is sandwiched between the upper mounting ring portion 7. .

Although the case body 255 and top cover 256 may be formed of plastic, in the sense that the pressure resistance of the filter case 25 4 when the vacuum inside the filter case 254 can be easily and reliably, the case body 255 and the upper cover 256 are preferably formed of metal.

  Since other configurations are the same as those of the filtration device 160 of the fourth embodiment described above, the same reference numerals are given to the main parts in the drawings, and detailed descriptions thereof are omitted.

(Filtration system)
Here, an example of a filtration system using the filtration device of the present embodiment will be described with reference to FIG.

As illustrated in FIG. 20, the filtration system 290 of the present embodiment includes the above-described filtration device 250 of the present embodiment, the coolant tank 101, the recovery container 102, and the pump 103. In the stock solution storage unit 101 b, one end of the supply pipe 104 is disposed below the liquid level, and the other end of the supply pipe 104 is connected to the inlet 45 of the filtration device 250. Further, one end of a suction pipe 105 a constituting a part of the outflow pipe 105 is connected to the outlet 46 of the filtration device 250, and the other end of the suction pipe 105 a is connected to a suction port (not shown) of the pump 103. ing. One end of a discharge pipe 105b that constitutes the other part of the outflow pipe 105 is connected to a discharge port (not shown) of the pump 103, and the other end of the discharge pipe 105b is disposed above the supply liquid storage section 101a. ing.

  And by driving the pump 103, the inside of the filter case 254 of the filtration device 250 can be depressurized via the suction pipe 105a, so that the stock solution G is sucked into the filtration device 250 via the supply pipe 104, The filtrate E can be led to the supply liquid storage part 101a through the outflow pipe 105. In addition, one end of a cleaning pipe 151 for guiding the cleaning fluid C to the inside of the filter case 254 is connected to the supply port 143 of the filtration device 250 via a cleaning on-off valve 152 that is normally closed.

  Since other configurations are the same as those of the filtration system 240 shown in FIG. 18B described above, the same reference numerals are given to the main parts in the drawings, and detailed descriptions thereof are omitted.

  According to the filtration system 290 using the filtration device 250 of the present embodiment, by driving the pump 103, the inside of the filter case 254 of the filtration device 250 is depressurized via the suction piping 105a. Then, the stock solution G is sucked into the filtration device 250. The stock solution G supplied to the inlet 45 of the filtration device 250 passes through the inside of the inflow pipe 55 from the outside in the radial direction to the inside and flows into the outside of the cylindrical filter 2. That is, the inflow path is provided in the filtration device 250 of this embodiment so as to guide the stock solution G from the inflow port 45 to the outside of the cylindrical filter 2. Then, the stock solution G supplied to the outside of the cylindrical filter 2 passes through the cylindrical filter 2 from the outside toward the inside. When this undiluted solution G passes through the cylindrical filter 2, the processed powder K having a predetermined size or more contained in the undiluted solution G is separated by a filtering action. That is, when the stock solution G passes through the cylindrical filter 2 from the outside to the inside, the processing powder K having a predetermined size, for example, 20 μm or more contained in the stock solution G is captured and separated by the stitches of the tubular filter 2. become.

  Then, the filtrate E that has passed through the cylindrical filter 2 passes through the passage opening 257 and the filtrate passage space 258 in this order, and flows out from the outlet 46. That is, the outflow path is provided in the filtration device 250 of this embodiment so as to guide the filtrate E after being filtered by the cylindrical filter 2 to the outlet 46 through the inside of the cylindrical filter 2. And the filtrate E which flows out from the outflow port 46 passes the outflow piping 105, and is sent to the supply liquid storage part 101a of the coolant tank 101 (refer FIG. 20).

  On the other hand, the processed powder K separated by the cylindrical filter 2 is sequentially deposited starting from the lower end of the discharge pipe 176, specifically the flow path blocking position (not shown) of the valve 48, and becomes a filter cake R. It will lead to the inside. That is, the filtration device 250 of the present embodiment is provided with a discharge path so as to guide the processed powder K separated by the cylindrical filter 2 to the discharge port 47 through the outside of the cylindrical filter 2. Then, the filter cake R accumulated above the discharge port 47 and thus inside the cylindrical filter 2 is collected in the collection container 102 by opening the valve 48 connected to the discharge port 47 (FIG. 20). reference).

  Also, the cylindrical filter 2 is cleaned by supplying the cleaning fluid C to the inside of the filter case 254 through the supply port 143 simultaneously with discharging the filter cake R or after discharging the filter cake R. Can do. That is, when the cleaning fluid C is supplied to the inside of the filter case 254, the processed powder K caught by the stitches due to vibration of the cylindrical filter 2 falls down and is collected in the collection container 102. Of course, when air is used as the cleaning fluid C, only the processed powder K is recovered in the recovery container 102. At this time, the cleaning on-off valve 152 is opened, and the inflow on-off valve 153 and the outflow on-off valve 154 are closed to prevent the cleaning fluid C from flowing into the supply pipe 104 and the suction pipe 105a. be able to.

According to the filtering device 250 of the present embodiment having such a configuration, the same effect as the filtering device 160 of the fourth embodiment described above can be obtained, and the cylindrical filter 2 can be easily provided outside the filter support 203. An inflow path that guides the stock solution G from the inflow port 45 to the outside of the cylindrical filter 2, and a filtrate E that has been filtered by the cylindrical filter 2 through the inside of the cylindrical filter 2. An outflow path that leads to 46 and a discharge path that guides the processed powder K separated by the cylindrical filter 2 to the discharge port 47 through the outside of the cylindrical filter 2 can be obtained reliably. Furthermore, according to the filtration device 250 of the present embodiment, the space between the case main body 255 and the upper lid 256 can be sealed with the O-ring 272, so that the stock solution G is sucked into the filter case 254 to obtain the filtrate E. Since it can be forced to flow out, the filtration efficiency can be easily improved.

In addition, this invention is not limited to each embodiment mentioned above, A various change is possible as needed. For example, a plurality of cylindrical filters can be arranged inside one filter case. Also, the case the body is formed of a transparent plastic, may be viewing the tubular filter from the outside.

1, 120, 140, 160, 200, 250 Filtration device 2 Cylindrical filter 3, 3a, 3b, 3c, 203 Filter support 4, 121, 141, 161, 204, 254 Filter case 7, 7c Upper mounting ring portion 8, 8c Lower mounting ring part 9, 9a, 9b, 9c Vertical connection part 12 Upper flange 13 Concave taper surface 16 Lower flange 20, 20b, 20c, 144, 164, 257 Passing opening 41, 123, 142, 162, 205, 255 Case Main body 42 Case bottom 43, 230, 256 Upper lid 44, 170 Support support 45 Inlet 46 Outlet 47 Outlet 48 Valve 50, 128, 145, 165, 206, 258 Filtrate passage space 51 Lid support pipe 55 Inlet pipe 59, 59a Lid support rod 60 Press ring 61 Convex taper surface 65 Snap 91 81 Outflow pipe 91, 92 Support positioning member 91a Ring body 91b, 92b Lower passage port 92a Connecting rod 100, 150, 180, 240, 290 Filtration system 122 Peep window 124 Inner case 143 Supply port 147 Supply pipe 171 Support bottom wall 176 Discharge pipe 211, 261 Upper support ring 213, 263 Flange receiving ring 215, 265, 222, 272 O-ring (gasket)
217, 267 Annular upper support part 218 Second inflow pipe 220, 270 Case flange (connection flange part)
221,271 Case taper surface 231,275 Cover flange (connection flange)
232, 276 Cover taper surface 234 First inflow pipe 236, 279 V-band shaft coupling (fastening member)
C Cleaning fluid E Filtrate G Stock solution (liquid to be filtered)
K processed powder (solid particles)
R filter cake

Claims (11)

A cylindrical filter that is formed to be stretchable by a knitted stretchable yarn and separates solid particles contained in the liquid to be filtered;
A filter support formed in a cylindrical shape to which the cylindrical filter is mounted;
The filter support in a state in which the cylindrical filter is mounted, and a filter case for accommodating the length direction of the filter support in the vertical direction;
The filter support includes an upper attachment ring portion attached so that one end portion of the tubular filter is folded, a lower attachment ring portion attached so that the other end portion of the tubular filter is folded, and the upper attachment ring portion. And connecting the lower mounting ring portion, and having a vertical connection portion having a plurality of passage openings through which the filtrate after filtration with the cylindrical filter or the liquid to be filtered passes.
The filter case has a cylindrical case main body in which the filter support is inserted and removed through an upper opening, and an upper lid that is detachably attached to the case main body to cover the upper opening of the case main body, In order to support the filter support from below, a support support portion that is disposed inside the case body with the length direction thereof being directed in the vertical direction, and a flow for guiding the liquid to be filtered to the inside. An inlet, an outlet provided below the inlet, an outlet for flowing out the filtrate after being filtered by the cylindrical filter, and provided below the outlet, and are normally closed. And a discharge port for discharging solid particles separated by the cylindrical filter to the outside.   The said filter case is provided above the said outflow port, It has a supply port for guide | inducing the washing | cleaning fluid which removes the clogging of the said cylindrical filter inside. Filtration equipment. The upper lid is provided with an inflow pipe penetrating the upper lid in the vertical direction, the inflow pipe is provided at an upper end portion of the inflow pipe, and a lower end portion of the inflow pipe is disposed inside the upper mounting ring portion. Has been
The lower part of the case body is provided with an outflow pipe that communicates the inside and outside of the case body , and the outflow pipe is provided at the tip of the outflow pipe,
The filter case has a case bottom that closes a lower opening of the case body,
The lower part of the support support part penetrates the bottom of the case and protrudes downward from the case body, and the discharge port is provided at the lower end part of the support support part.
The cylindrical filter is attached so that one end thereof is folded back to the upper mounting ring portion and the other end is folded to be folded outward by the lower mounting ring portion. It is attached inside,
3. The filtration according to claim 1, wherein the filtration target liquid that has flowed into the filter case from the inflow port is formed so as to pass through the cylindrical filter from the inside toward the outside. apparatus. The filter case has an inner case formed in a cylindrical shape by a transparent plastic attached to the inside of the case body,
4. The filtering device according to claim 3, wherein the case main body is formed with a viewing window through which the cylindrical filter can be seen from the outside through the inner case. The upper lid is provided with an inflow pipe penetrating the upper lid in the vertical direction, the inflow pipe is provided at an upper end portion of the inflow pipe, and the lower end portion of the inflow pipe is disposed on the inner side of the upper mounting ring portion. Are located in
The lower part of the case body is provided with an outflow pipe that communicates the inside and outside of the case body , and the outflow pipe is provided at the tip of the outflow pipe,
The filter case has a case bottom that closes a lower opening of the case body,
The lower part of the support support part penetrates the bottom of the case and protrudes downward from the case body, and the discharge port is provided at the lower end part of the support support part.
The cylindrical filter is attached so that one end thereof is folded back to the upper mounting ring portion and the other end is folded to be folded inward to the lower mounting ring portion. Attached to the outside,
3. The filtration according to claim 1, wherein the filtration target liquid that has flowed into the filter case from the inflow port is formed so as to pass through the cylindrical filter from the inside toward the outside. apparatus. Inside of the case body, the cylindrical net body for the tubular filter is prevented from a state in which stitches are enlarged and solid particles of the cylindrical filter be expanded to pass through at least the upper and lower connecting portions The filter device according to claim 5, wherein the filter device is disposed so as to surround the filter. The upper portion of the case body, the inlet pipe is provided for communicating the inside and outside of the case body, wherein the inlet is provided at the distal end of the inflow pipe,
The support support portion has a support bottom wall portion that closes the lower opening,
The lower part of the case body is provided with an outflow pipe that communicates the outside of the case body and the inside of the support support part, and the outflow pipe is provided at the tip of the outflow pipe,
The lower end of the case body is connected to the upper end of a discharge pipe extending in the vertical direction, and the discharge port is provided at the lower end of the discharge pipe.
The cylindrical filter is attached so that one end thereof is folded back to the upper mounting ring portion and the other end is folded to be folded inward to the lower mounting ring portion. Attached to the outside,
3. The filtration according to claim 1, wherein the liquid to be filtered that has flowed into the filter case from the inlet is formed so as to pass through the cylindrical filter from the outside toward the inside. apparatus.   The lower surface of the upper lid is provided with a pressing ring formed of a rubber-like elastic body that sandwiches the cylindrical filter with the upper mounting ring portion when the upper lid is attached to the case body. The filtration device according to any one of claims 3 to 7, wherein The filter case has a connecting flange portion provided on each of the outer peripheral portion of the upper portion and the upper lid of the case body, and a gasket disposed between the facing surfaces of the two joining flange portions, for the two joining A fastening member for detachably fastening the flange portion,
The upper lid is provided with a first inflow pipe penetrating the upper lid in the vertical direction so that a lower opening thereof is opposed to an upper opening of the filter support, and the inlet is provided at an upper end portion of the first inflow pipe. And
The case main body has an annular upper support portion for positioning and supporting the upper mounting ring portion on the opening end side of the inner surface thereof,
Between the upper opening and the annular upper support portion of the case body, a second inlet pipe which communicates is provided inside and outside of the case body, wherein the inlet is also provided on-edge portion of the second inflow pipe And
The lower part of the case body is provided with an outflow pipe that communicates the inside and outside of the case body , and the outflow pipe is provided at the tip of the outflow pipe,
The case body has a case bottom portion that closes the lower opening,
The lower part of the support support part penetrates the bottom of the case and protrudes downward from the case body, and the discharge port is provided at the lower end part of the support support part.
The cylindrical filter is attached so that one end thereof is folded back to the upper mounting ring portion and the other end is folded to be folded outward by the lower mounting ring portion. It is attached inside,
One of the inflow port provided in the first inflow pipe and the inflow port provided in the second inflow pipe can be selected and used.
The filter case attaches the upper lid to the case main body by fastening the connecting flange portion of the case main body and the connecting flange portion of the upper lid with the fastening member, and between the case main body and the upper lid. Is sealed with the gasket so that the liquid to be filtered can be sucked into the filter case.
3. The filtration according to claim 1, wherein the filtration target liquid that has flowed into the filter case from the inflow port is formed so as to pass through the cylindrical filter from the inside toward the outside. apparatus. The filter case has a connecting flange portion provided on each of the outer peripheral portion of the upper portion and the upper lid of the case body, and a gasket disposed between the facing surfaces of the two joining flange portions, for the two joining A fastening member for detachably fastening the flange portion,
The case main body has an annular upper support portion for positioning and supporting the upper mounting ring portion on the upper opening side of the inner surface thereof,
Below than the annular upper support portion of the case body, the inlet pipe is provided for communicating the inside and outside of the case body, wherein the inlet is provided at the distal end of the inflow pipe,
The support support portion has a support bottom wall portion that closes the lower opening,
The lower part of the case body is provided with an outflow pipe that communicates the outside of the case body and the inside of the support support part, and the outflow pipe is provided at the tip of the outflow pipe,
The lower end of the case body is connected to the upper end of a discharge pipe extending in the vertical direction, and the discharge port is provided at the lower end of the discharge pipe.
The tubular filter has one end attached to wrap inwardly on said mounting ring, by the other end is attached to wrap the inside to the lower mounting ring, said filter support Attached to the outside,
The filter case attaches the upper lid to the case main body by fastening the connecting flange portion of the case main body and the connecting flange portion of the upper lid with the fastening member, and between the case main body and the upper lid. Is sealed with the gasket so that the liquid to be filtered can be sucked into the filter case.
3. The filtration according to claim 1, wherein the liquid to be filtered that has flowed into the filter case from the inlet is formed so as to pass through the cylindrical filter from the outside toward the inside. apparatus.   A biasing member that biases the filter support downward when the upper lid is attached to the case body is disposed between the lower surface of the upper lid and the upper mounting ring portion. The filtration device according to claim 9 or 10, characterized in that

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