JP4411656B2 - Filter device - Google Patents

Description

The present invention relates to a filter device that can increase or decrease the processing capacity by connecting a plurality of filter heads .

In the fluid treatment system including a water treatment system, fine particles from the fluid, dust, to remove impurities and undesired substances, such as chemicals, the filter unit is used that houses the filter cartridge in the filter housing. The filter cartridge is replaced with a new filter cartridge when it has lost its capacity after processing a predetermined amount of fluid. Further, the filter housing is generally configured to include a container such as a container or a cylinder, and a filter head having a fluid introduction path and a discharge path provided in an opening of the container. A single or a plurality of filter cartridges can be accommodated.

The filter unit requires various processing capacities depending on the system to which it is applied, and is required to respond flexibly to an increase or decrease in the processing capacity. For example, a filter unit including a large filter housing that can accommodate a plurality of filter cartridges is suitable for a system that requires a relatively large processing capacity. However, in systems where a relatively small processing capacity is sufficient, excess capacity and installation space are wasted. For this reason, it can be said that the filter unit provided with the large filter housing is poor in versatility.

A filter unit including a filter housing that can accommodate a single filter cartridge is small and suitable for a system that requires a relatively small processing capacity and is sufficient. On the other hand, when a relatively large processing capability is required, a filter device with an increased processing capability is configured by connecting a plurality of filter units in series or in parallel. However, a configuration in which a plurality of filter units are connected in series is not so often employed because a pressure loss when a fluid passes increases. On the other hand, the configuration in which a plurality of filter units are connected in parallel has an advantage of suppressing an increase in pressure loss, but each filter unit must be connected to the main pipe via a branch pipe and a collecting pipe. As a result, the number of piping parts increases and the time required for assembly increases. For this reason, conventionally, a filter device that can set an arbitrary processing capacity and is easy to assemble has been proposed for a configuration that uses a plurality of filter units.

For example, Patent Documents 1 and 2 describe a filter device that can freely give a desired processing capability by making a plurality of filter units connectable. Patent Documents 1 and 2 have the same technical idea, and are particularly characterized in the flow path configuration of the filter head mounted on the filter housing. The filter head is provided with a first flow path that communicates with the supply part of the filter cartridge and a second flow path that communicates with the recovery part of the filter cartridge, penetrating the filter head . When a predetermined number of filter heads are arranged adjacent to each other and the first flow paths are connected to each other and the second flow paths are connected to each other, a parallel flow path is formed for each filter cartridge. That is, the first flow path functions as a branch pipe, and the second flow path functions as a collecting pipe. Here, in patent document 1, it is the structure which connects each flow path by welding the adjacent filter head . On the other hand, in patent document 2, it is the structure which connects each flow path using a hollow cylindrical coupling tool.

JP-A-5-111605 Japanese Patent No. 2953612

By the way, in the filter units described in Patent Documents 1 and 2, the first flow path and the second flow path provided in the filter head are individually arranged independently, and the axial center positions of the fluid inlet and the fluid outlet are close to each other. There is a limit to the arrangement. For this reason, in the case where a single filter unit or a filter device in which a plurality of filter units are connected to each other is connected to a pipe line, connection may be difficult. For example, when a filter unit or a filter device is newly installed in existing piping, if the axial center positions of the fluid inlet and the fluid outlet are not close to each other, the pipe cannot be cut and directly connected, and the piping is renewed. It has become necessary to prepare a joint member separately.

  The problem to be solved by the present invention is to simplify the connection to a pipe and the incorporation in a single filter unit or a filter device in which a plurality of filter units are connected.

The present invention has been made to solve the above-mentioned problems. The invention according to claim 1 is: (A) formed along the central axis of a columnar head body and opened toward the lower surface of the head body. A supply channel 10 composed of a cylindrical hole, a cylindrical hole penetrating the head main body in a direction orthogonal to the supply channel 10, and a first flow channel 8 composed of a tubular body respectively erected on the peripheral edges of both ends of the cylindrical hole; A second channel 9 composed of a cylindrical hole formed coaxially with the first channel 8; communicated with the second channel 9; A recovery channel 12 comprising a communication hole that opens to the lower surface of the prismatic body along the central axis of the head main body, and an annular wall 11 standing on the periphery of the opening of the communication hole; along the axial direction of the first channel 8 Groove portion 19 formed on the inner peripheral wall; and formed at both ends of the conduit of the first flow path 8 respectively. The filter head 3 provided with the first tightening flange 15, (B) the filter housing 2 mounted in the lower surface opening of the filter head 3, and (C) the outer periphery of the filter housing 2 housed in the filter housing 2. A hollow cylindrical filter cartridge 23 having an inner peripheral surface communicating with the recovery passage 12 and communicating with the passage 10; and (D) a cylindrical hole penetrating along the central axis of the columnar joint body, An inflow path 32 comprising a tubular body standing on the periphery of one opening of the cylindrical hole through a reduced diameter portion; and a second fastening flange 34 formed at an end portion on the side facing the tubular body, In the state where the passage 32 and the first flow path 8 are coaxially arranged, the inlet joint 6 constituting the fluid inlet to the filter head 3 by coupling the second fastening flange 34 with the first fastening flange 15; E) Cylindrical joint A cylindrical hole penetrating along the central axis of the main body, an outflow passage 37 composed of a tubular body standing on the periphery of one opening of the cylindrical hole via a reduced diameter portion; and an end portion on the side facing the tubular body The third tightening flange 40 is coupled to the first tightening flange 15 in a state where the third tightening flange 40 is formed and the outflow path 37 and the first flow path 8 are coaxially arranged. The outlet joint 7 constituting the fluid outlet with respect to the head 3 and (F) the fluid inlet side are fixed by a pressing plate 44 arranged along the groove portion 19 in the first flow path 8, and the opening of the second flow path 9 is opened. A disc-shaped cap 43 for sealing, and (G) on the fluid outlet side, extending from the inside of the first flow path 8 to the cylindrical hole portion of the outflow path 37, By being sandwiched by the reduced diameter portion of the outflow passage 37, the second flow It is characterized in that it comprises a first connecting member 45 cylindrical connecting the tube outlet channel 37 to 9.

According to the first aspect of the present invention, in the filter head , the first flow path and the second flow path have a so-called double pipe structure . The first flow path serves as a path for introducing the fluid to be processed into the filter housing by communicating with the supply flow path. On the other hand, the second flow path serves as a path for leading the processing fluid from the filter cartridge by communicating with the recovery flow path .

The invention according to claim 2 is: (A) a supply channel 10 formed of a cylindrical hole formed along the central axis of the cylindrical head body and opening toward the lower surface of the head body; A cylindrical hole penetrating the head main body in the direction of the first flow path, and a first flow path 8 composed of a tubular body standing upright at both ends of the cylindrical hole; an opposing surface of a prismatic body suspended from the upper surface of the supply flow path 10 A second flow path 9 comprising a cylindrical hole formed coaxially with the first flow path 8; a communication that communicates with the second flow path 9 and opens to the lower surface of the prismatic body along the central axis of the head body. A recovery flow path 12 comprising a hole and an annular wall 11 erected on the periphery of the opening of the communication hole; a groove 19 formed in the inner peripheral wall along the axial direction of the first flow path 8; and a tube of the first flow path 8 The first fastening flanges 15 formed at both ends of the body, respectively, Two or more filter heads 3 disposed adjacent to each other on the same axis, (B) a filter housing 2 mounted in a lower surface opening of each filter head 3, and (C) each filter housing 2 accommodated in the outer peripheral surface A hollow cylindrical filter cartridge 23 that communicates with the supply flow path 10 and whose inner peripheral surface communicates with the recovery flow path 12; and (D) a cylindrical hole that penetrates along the central axis of the columnar joint body. An inflow passage 32 comprising a tubular body standing on the periphery of one opening of the cylindrical hole via a reduced diameter portion; and a second fastening flange 34 formed at an end portion on the side facing the tubular body. The fluid inlet for the group of filter heads 3 is formed by connecting the second fastening flange 34 to the first fastening flange 15 at the head position in a state where the inflow passage 32 and the first passage 8 are coaxially arranged. An inlet joint 6 for E) A cylindrical hole penetrating along the central axis of the cylindrical joint body, an outflow passage 37 including a tubular body standing upright at one opening periphery of the cylindrical hole via a reduced diameter portion; A third tightening flange 40 formed at the opposite end is provided, and the third tightening flange 40 is first tightened at the rear position in a state where the outflow path 37 and the first flow path 8 are arranged coaxially. By connecting with the flange 15, the outlet joint 7 constituting the fluid outlet for the group of filter heads 3, and (F) the pressing plate 44 disposed along the groove 19 in the first flow path 8 on the fluid inlet side. A disk-shaped cap 43 that is fixed and seals the opening of the second flow path 9, and (G) on the fluid outlet side, extends from the first flow path 8 to the cylindrical hole portion of the outflow path 37. , The opening peripheral edge of the second flow path 9 and the reduced diameter of the outflow path 37 In the cylindrical first connection member 45 that connects the second flow path 9 to the tubular body of the outflow path 37, and (H) the filter heads 3 adjacent to each other, The second flow path 9 is disposed so as to extend from the first flow path 8 into the first flow rate 8 of the rear filter head 3 and is sandwiched between the opening peripheral edges of the second flow path 9 facing each other. And a cylindrical second connecting member 49 for connecting the passages 9 to each other. (I) Furthermore, the first fastening flanges 15 of the filter heads 3 adjacent to each other are connected to each other.

According to the second aspect of the present invention, an integrated device in which parallel flow paths are formed for the plurality of filter cartridges can be obtained .

According to the present invention, in the filter head for the filter unit, the fluid introduction path and the lead-out path have a double pipe structure, so that the axial center positions of the fluid inlet and the fluid outlet can be arranged coaxially. In addition, the filter head itself can be reduced in size. For this reason, in any state of a single filter unit or a filter device in which a plurality of filter units are connected, connection to a pipe or incorporation can be easily performed. Also, the installation space for the filter device can be reduced.

Next, an embodiment of the present invention will be described. The filter unit according to this embodiment mainly includes a filter housing in which a filter cartridge can be accommodated, and a filter head mounted in an opening of the filter housing .

  As the filter cartridge, for example, a thread-like, fiber-like, fine-grained filter medium, an adsorbent, an ion exchanger formed in a hollow cylindrical shape is used, and a granular, flat membrane-like, hollow-fiber membrane-like filter medium, adsorption A material, an ion exchanger, and the like housed in a fluid-permeable container formed in a hollow cylindrical shape are used. When removing impurities and unnecessary substances in the fluid such as liquid and gas, the fluid is usually passed from the outside of the filter cartridge to the hollow portion for the purpose of securing the contact area with the fluid. In other words, the filter cartridge is used so that the outer space serves as a processing fluid supply section and the hollow space serves as a processing fluid collection section.

The filter housing is a member in which the filter cartridge is accommodated. For example, a cylindrical case or a container with one end closed is used.

The filter head is mounted at the opening of the filter housing, as well as seal the filter housing is a member for performing derivation of introduction and process fluid of the process fluid to the filter cartridge. Further, the filter head, with the first flow path in the axial direction is provided, on the inner side of the first channel is the second channel are formed. Here, the axial center position of the second flow path is arranged coaxially with the axial position of the first flow path , and has a so-called double tube structure.

The filter head is provided with a supply channel that opens outward in a direction orthogonal to the first channel, and a recovery channel is formed inside the supply channel. The portion where the supply flow path is opened is attached to the opening of the filter housing . The first channel is in communication with the supply channel, and the second channel is in communication with the recovery channel.

In a state where the filter head is mounted on the filter housing , the one end surface of the filter cartridge is in contact with the end surface of the wall defining the supply channel and the recovery channel at the periphery of the opening. On the other hand, the opening of the other end surface of the filter cartridge is closed. Accordingly, in this state, the first flow path communicates with the supply portion of the filter cartridge via the supply flow path. Further, the second flow path communicates with the recovery portion of the filter cartridge via the recovery flow path.

When the filter unit is used as a single filter device, an inlet joint and an outlet joint are respectively attached to both ends of the first flow path . The inlet joint and the outlet joint have an inflow path and an outflow path, respectively, and are connected to an external pipe on the side facing the side where the filter head is mounted. Here, the axial positions of the inflow path and the outflow path are arranged so as to be coaxial with the axial position of the first flow path .

The inlet side end of the second flow path is sealed with a cap. The cap is made of an elastic material such as synthetic rubber, and is configured to come into contact with the inlet side end of the second flow path when the inlet joint is attached .

On the other hand, the outlet side end of the second flow path is connected to the outflow path. For example, a cylindrical connecting member formed of an elastic material such as synthetic rubber is used, and both ends of the connecting member are in contact with the outlet side end of the second flow path and the inlet side end of the outflow path, respectively . And configured to form a continuous path .

Here, the operation of the filter unit will be described. First, a fluid to be processed containing impurities and unnecessary materials is supplied from the inflow path. The fluid to be processed that has flowed into the first flow path is introduced into the supply portion of the filter cartridge via the supply flow path. Here, the second channel has an inlet side end sealed by the cap and an outlet side end connected to the outflow channel, so that the fluid to be treated flows into the second channel . Blocked. Subsequently, the fluid to be processed flows from the supply part of the filter cartridge toward the recovery part, and impurities in the fluid to be processed are removed in the process of passing through the filter cartridge. The processing fluid from which impurities and the like have been removed gathers in the recovery portion of the filter cartridge, and then flows in this order through the recovery flow path, the second flow path, and the outflow path and is supplied to the outside of the filter unit. Is done.

  Next, a filter device in which a plurality of the filter units are connected to increase the processing capacity will be described.

In this filter device, a predetermined number of the filter units are connected in series, and the filter heads in the filter units are arranged adjacent to each other. The first flow paths are connected to each other, and the second flow paths are connected to each other.

It said first channel if and connections, for example the inlet end of the first first channel the first flow path outlet side end portion and a second of placing each filter head to abut. That is, as the first flow path of the inlet end of the first channel of the outlet side end of the next stage arranged filter head of the filter head disposed in front abuts, one after another to place each filter head To do .

On the other hand, the connection between the second flow paths uses, for example, a cylindrical connection member formed of an elastic material such as synthetic rubber, and the outlet side end of the first second flow path and the inlet of the connection member Each filter head is disposed so that the side end portion comes into contact with the outlet side end portion of the connecting member and the inlet side end portion of the second second flow path . That is, a path in which the inlet end of the second channel filter head arranged on the outlet side end of the next stage of the second channel of the filter head arranged on the front is continuous through the connecting member The filter heads are then placed one after the other so as to form .

When the filter heads are connected to each other by, for example, bonding means such as adhesion and welding, or are connected by connecting means such as bolts and nuts, the connection between the first flow paths and the second flow paths is achieved. The Here, if the filter heads are connected using bolts and nuts, the filter unit can be easily increased or decreased or replaced even after the filter device is installed.

In the filter device, the inlet joint and the outlet joint are attached to both ends of the connected first flow path , respectively. In this state, the axial positions of the inflow path and the outflow path are arranged so as to be coaxial with the axial position of the first flow path .

The inlet side end of the second flow path is sealed with a cap. The cap is made of an elastic material such as synthetic rubber, and is configured to come into contact with the inlet side end of the second flow path when the inlet joint is attached .

On the other hand, the outlet side end of the second flow path is connected to the outflow path. For example, a cylindrical connecting member formed of an elastic material such as synthetic rubber is used, and both ends of the connecting member are in contact with the outlet side end of the second flow path and the inlet side end of the outflow path, respectively . And configured to form a continuous path .

  The appearance of the filter device configured as described above is a series connection of the filter units, and the internal flow paths are formed in parallel with the individual filter cartridges.

Here, the operation of the filter device will be described. First, a fluid to be processed containing impurities and unnecessary materials is supplied from the inflow path. The fluid to be processed that has flowed into the first flow path is distributed to the supply portions of the respective filter cartridges via the respective supply flow paths in the respective filter units. Here, the second channel has an inlet side end sealed by the cap and an outlet side end connected to the outflow channel, so that the fluid to be treated flows into the second channel . Blocked. Subsequently, the fluid to be processed flows from the supply unit to the recovery unit in each filter cartridge, and impurities and the like in the fluid to be processed are removed in the process of passing through the filter cartridge. Then, the processing fluid from which impurities and the like have been removed gathers in the recovery section in each of the filter cartridges, and then flows out to the second flow path via the recovery flow path. The processing fluids merge while flowing through the second flow path, and are supplied to the outside of the filter device via the outflow path.

As described above, in the filter head for the filter unit, since the fluid introduction path and the lead-out path have a double tube structure, a configuration in which the axial center positions of the fluid inlet and the fluid outlet are arranged coaxially is possible. . Therefore, according to the present invention, it is possible to easily connect to or incorporate a pipe in any state of a single filter unit or a filter device in which a plurality of filter units are connected. Further, since the filter head itself is also reduced in size, the installation space for the filter device can be reduced.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. First, the first embodiment of the present invention is an example in which a filter unit that uses a single filter cartridge to remove fine particles, dust, organic substances, residual chlorine, etc. in water is applied to the filter device .

FIG. 1 shows the external appearance of the filter unit 1 in an assembled state. The filter unit 1 mainly includes a filter housing 2 and a filter head 3. The filter housing 2 includes a housing cylinder 4 that houses a filter cartridge (not shown) and a lid member 5 that is attached to one end of the housing cylinder 4. The filter head 3 is attached to the other end side of the housing cylinder 4. The filter head 3 is connected to a pipe line (not shown) through which the water to be treated flows, an inlet joint 6 for introducing the water to be treated into the filter unit 1, and a pipe line through which the water to be treated flows ( And an outlet joint 7 for leading the treated water out of the filter unit 1.

Here, the configuration of the filter head 3 will be described with reference to FIGS. FIG. 2 is a longitudinal sectional view of the filter head 3 as seen from the front direction of FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.

Wherein the filter head 3, the first passage 8 cylindrical penetrating in the axial direction is provided, and the second flow path 9 is formed on the inside of the first flow path 8. Here, the axial position of the second flow path 9 is formed to be coaxial with the axial position of the first flow path 8. That is, the axial center position of the second flow path 9 is arranged coaxially with the axial position of the first flow path 8. Further, the filter head 3 is provided with a supply flow path 10 that opens outward in a direction orthogonal to the first flow path 8, and is partitioned by an annular wall 11 inside the supply flow path 10. A recovery channel 12 is formed. The first flow path 8 is in communication with the supply flow path 10, and the second flow path 9 is in communication with the recovery flow path 12. A first step portion 13 that abuts the connecting end portion of the housing cylinder 4 is provided at a portion where the supply flow path 10 is opened. Further, a screw hole 14 is provided on the axial center of the recovery flow path 12 on the inner wall of the second flow path 9 opposite to the connection side with the housing cylinder 4. A female screw (not shown) is formed on the peripheral surface.

In the filter head 3, first fastening flanges 15 and 15 are formed symmetrically at both ends where the first flow path 8 is opened. Each of the first tightening flanges 15 is provided with a plurality of first bolt holes 16, 16,... Adjacent to the filter head 3, the inlet joint 6, the outlet joint 7, or the separate one. When the filter head 3 is arranged, adjacent members can be coupled using bolts and nuts.

An annular first recess 17 is provided at the inlet end of the first flow path 8, and an annular first protrusion 18 is provided at the outlet end. Here, the inner diameter of the first concave portion 17 is set to be substantially the same as the outer diameter of the first convex portion 18 but slightly larger, and the first convex portion 18 of the first filter head is set to the second filter. The head can be fitted into the first concave portion 17. A groove portion 19 is provided along the axial direction on the inlet side inner wall of the first flow path 8.

  Next, the internal configuration of the filter unit 1 in the assembled state will be described in detail with reference to FIGS. 5 is a longitudinal sectional view as seen from the front direction of FIG. 1, and FIG. 6 is a sectional view taken along line VI-VI in FIG.

The housing cylinder 4 is a cylinder having flanges 20 formed at both ends, and the filter housing 2 is formed when the cup-shaped lid member 5 is attached to one end. Specifically, a second stepped portion 21 having the same shape as the first stepped portion 13 is provided in the opening of the lid member 5, and an O-ring 22 is disposed on the second stepped portion 21. The flange 20 is fitted. On the other hand, the flange 20 is fitted to the filter head 3 in a state where an O-ring 22 is disposed in the first step portion 13.

In the filter housing 2, a filter cartridge 23, a filter receiver 24, and a spring 25 are arranged in this order from the filter head 3 side. The filter cartridge 23 is formed in a hollow cylindrical shape using a filter medium or an adsorbent, and may be, for example, a thread wound filter (wind filter), a membrane filter, an activated carbon filter, or an ion exchange filter depending on the purpose of the filtration process. , Ceramic filter etc. are applied. The filter receiver 24 is a disk-shaped member having an outer diameter larger than the opening diameter of the filter cartridge 23 and having a perforated central portion.

In the assembled state, the filter housing 2 and the filter head 3 are connected by a tie rod 26. The tie rod 26 includes a shaft 27 having a male screw (not shown) at the tip and a handle 28 connected to the end of the shaft 27. A through hole 29 is provided in the top of the lid member 5 (the lower end in FIG. 5), and the tie rod 26 is passed through the through hole 29 from the hollow portion (reference numeral omitted) of the spring 25 and the filter receiver 24. The filter housing 2 and the filter head 3 are inserted through the holes (reference numerals omitted) and the hollow portions (reference numerals omitted) of the filter cartridge 23 and the male screw portions are connected to the screw holes 14. And are combined. Here, the gap between the tie rod 26 and the through hole 29 is held in a liquid-tight manner with a seal member (not shown) such as an O-ring interposed.

In the state in which the filter head 3 is coupled to the filter housing 2, the opening on the one end side of the filter cartridge 23 has a peripheral edge section that defines the supply flow path 10 and the recovery flow path 12. It is pressed against the end of the spring by the spring 25. On the other hand, the opening on the other end side of the filter cartridge 23 is closed by the filter receiver 24 being pressed by the spring 25. In other words, in this state, the supply flow path 10 communicates with a space 30 (hereinafter referred to as “supply section 30”) outside the filter cartridge 23, and the recovery flow path 12 is connected to the filter cartridge 23. The cartridge 23 communicates with a space portion 31 (hereinafter referred to as “recovery portion 31”) inside the cartridge 23.

Meanwhile, with the inlet side of the filter head 3 is mounted is the inlet fitting 6, wherein said outlet fitting 7 on the outlet side of the filter head 3 is mounted. The inlet joint 6 is formed with a cylindrical inflow passage 32 penetrating in the axial direction, and is provided with a first pressure gauge connection port 33 that opens outward in a direction orthogonal to the inflow passage 32. Yes. The first pressure gauge connection port 33 is usually connected with a pressure gauge, a pressure sensor, or the like for measuring the supply pressure of the water to be treated. If these are not connected, they are sealed with a plug (not shown). Is done.

A second fastening flange 34 is formed on the outlet side of the inlet joint 6, and the second fastening flange 34 is provided with a plurality of second bolt holes 35, 35,. An annular second convex portion 36 is provided at the outlet side end of the inflow passage 32. The inner diameter of the second convex portion 36 is set to be substantially the same as the inner diameter of the first concave portion 17 but slightly smaller, and the second convex portion 36 is fitted into the first concave portion 17 of the adjacent filter head 3. Are combined. Here, an O-ring (not shown) is disposed between the fitted second convex portion 36 and the first concave portion 17. The filter head 3 and the inlet joint 6 use bolts (not shown) and nuts (not shown) for the first bolt holes 16 and the second bolt holes 35 at corresponding positions. Are combined.

  On the other hand, the outlet joint 7 is formed with a cylindrical outflow passage 37 penetrating in the axial direction, and is provided with a second pressure gauge connection port 38 that opens outward in a direction orthogonal to the outflow passage 37. It has been. The second pressure gauge connection port 38 is normally connected to a pressure gauge, a pressure sensor, or the like for measuring the supply pressure of the treated water. When these are not connected, the second pressure gauge connection port 38 is sealed with a plug (not shown). . An annular third step 39 is provided in the outflow passage 37.

A third fastening flange 40 is formed on the inlet side of the outlet joint 7, and the third fastening flange 40 is provided with a plurality of third bolt holes 41, 41,. An annular second recess 42 is provided at the inlet side end of the outflow passage 37. The inner diameter of the second concave portion 42 is set to be substantially the same as the outer diameter of the first convex portion 18 but slightly larger, and the first convex portion 18 of the adjacent filter head 3 moves to the second concave portion 42. It is mated. Here, an O-ring (not shown) is disposed between the fitted first convex portion 18 and the second concave portion 42. The filter head 3 and the outlet joint 7 use bolts (not shown) and nuts (not shown) for the first bolt holes 16 and the third bolt holes 41 at corresponding positions. Are combined.

By the way, the inlet side end portion of the second flow path 9 is sealed with a cap 43. The cap 43 is a disk-shaped member made of synthetic rubber, and the peripheral edge of the cap 43 is pressed against the inlet side end of the second flow path 9 by a cap pressing plate 44. The cap pressing plate 44 is disposed vertically along the groove portion 19 and is fixed by bringing the end surface opposite to the side in contact with the cap 43 into contact with the end surface of the second convex portion 36. Yes.

On the other hand, the outlet side end of the second flow path 9 is connected to the outflow path 37 by a first connection member 45. The first connecting member 45 is a cylindrical member made of synthetic rubber, and both end portions of the first connecting member 45 are respectively connected to the outlet side end portion of the second flow path 9 and the third stepped portion 39. It is in contact with. Here, the first connecting member 45 is fixed by being sandwiched between the outlet side end portion of the second flow path 9 and the third stepped portion 39. Therefore, in a state where the cap 43 and the first connection member 45 are incorporated, the inflow path 32 communicates with the first flow path 8 without communicating with the second flow path 9. In addition, the outflow passage 37 communicates with the second flow passage 9 without communicating with the first flow passage 8.

Now, the operation of the filter unit 1 will be described. First, water to be treated containing impurities such as fine particles, dust, residual chlorine and unnecessary substances is supplied from the inflow path 32. The treated water that has flowed into the first flow path 8 is introduced into the supply unit 30 via the supply flow path 10. Here, the inlet side end of the second flow path 9 is sealed by the cap 43 and the outlet side end is connected to the outflow path 37, so that the water to be treated enters the second flow path 9. Inflow is blocked. The treated water flows from the supply unit 30 toward the recovery unit 31, and impurities in the treated water are removed in the process of passing through the filter medium and the adsorbent of the filter cartridge 23. The treated water from which impurities and the like have been removed gathers in the recovery unit 31, and then the recovery flow channel 12, the second flow channel 9, the hollow portion (reference numeral omitted) of the first connection member 45, and the outflow It flows through the path 37 in this order and is supplied to the outside of the filter unit 1.

  Next, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment is an example in which a plurality of filter units are used to apply to a filter device having an increased ability to remove fine particles, dust, organic substances, residual chlorine and the like in water. 7-9, the same code | symbol as the said Example 1 has shown the same member, The detailed description is abbreviate | omitted.

FIG. 7 shows the external appearance of the filter device 46 in the assembled state. The filter device 46 includes three filter units 1, and the filter heads 3 are adjacently arranged in series. The configuration of the filter unit 1 is as described in the first embodiment. In addition, an inlet joint 6 and an outlet joint 7 are attached to the first and third stage filter heads 3, respectively . A first pressure gauge 47 is connected to the inlet joint 6, and a second pressure gauge 48 is connected to the outlet joint 7.

  8 and 9 are views showing the internal configuration of the filter device 46 in the assembled state. 8 is a longitudinal sectional view as seen from the front direction of FIG. 7, and FIG. 9 is a sectional view taken along the line IX-IX in FIG.

First, as the first recess 17 of the filter head 3 disposed at the next stage and the first convex portion 18 of the filter head 3 disposed in front is fitted, placing each filter head 3 one after another. Here, an O-ring (not shown) is disposed between the first concave portion 17 and the first convex portion 18 to keep it liquid-tight. As a result, the first and second first flow paths 8 are connected to each other, and a path in which the first flow paths 8 are continuous is formed.

Further, the second flow passages 9 at the front stage and the rear stage are connected using a cylindrical second connection member 49 formed of synthetic rubber. Specifically, the outlet side end of the second flow path 9 in the front stage is in contact with the inlet side end of the second connection member 49, and the inlet side end of the second flow path 9 in the rear stage is the second side. The filter heads 3 are arranged one after the other so as to abut the outlet side end of the connecting member 49. As a result, the upstream and downstream second flow paths 9 are connected to each other, and a path in which the second flow paths 9 are continuous is formed.

In this state, the first fastening flange 15 on the outlet side of the previous stage and the first fastening flange 15 on the inlet side of the next stage are in close contact with each other. The front and next filter heads 3 are coupled using bolts (not shown) and nuts (not shown) in a state where the positions of the first bolt holes 16, 16,. .

On the mounting side of the inlet joint 6, the inlet side end of the second flow path 9 is sealed by the cap 43. The peripheral edge of the cap 43 is pressed against the inlet side end of the second flow path 9 by the cap pressing plate 44. The cap pressing plate 44 is disposed vertically along the groove portion 19 and is fixed by bringing the end surface opposite to the side in contact with the cap 43 into contact with the end surface of the second convex portion 36. Yes.

On the other hand, on the mounting side of the outlet joint 7, the outlet side end of the second flow path 9 is connected to the outflow path 37 by the first connection member 45. Specifically, both end portions of the first connection member 45 are in contact with the outlet side end portion of the second flow path 9 and the third stepped portion 39, respectively. Here, the first connecting member 45 is fixed by being sandwiched between the outlet side end portion of the third flow path 9 and the third stepped portion 39. Therefore, in a state where the cap 43 and the first connection member 45 are incorporated, the inflow path 32 communicates with the first flow path 8 without communicating with the second flow path 9. In addition, the outflow passage 37 communicates with the second flow passage 9 without communicating with the first flow passage 8. Accordingly, in the filter device 46, a plurality of the filter units 1 are connected in series, but the internal flow paths are formed in parallel with the individual filter cartridges 23.

Now, the operation of the filter device 46 will be described. First, water to be treated containing impurities such as fine particles, dust, residual chlorine and unnecessary substances is supplied from the inflow path 32. The treated water that has flowed into the first flow path 8 is distributed to the supply unit 30 via the supply flow path 10 in each filter unit 1. Here, the inlet-side end of the second flow path 9 in the first stage is sealed by the cap 43, and the outlet-side end of the second flow path 9 in the third stage is connected to the outflow path 37. Therefore, the inflow of the water to be treated into the second flow path 9 is blocked. In each filter cartridge 1, the water to be treated flows from the supply unit 30 toward the recovery unit 31, and impurities in the water to be treated are removed in the process of passing through the filter medium and the adsorbent of the filter cartridge 23. The The treated water from which impurities and the like have been removed gathers in the recovery unit 31 and then flows out to the second flow path 9 via the recovery flow path 12. This treated water joins in a path formed by each of the second flow passages 9, the hollow portion (reference numeral omitted) of the first connection member 45 and the hollow portion (reference numeral omitted) of each second connection member 49. And is supplied to the outside of the filter device 46 through the outflow passage 37.

  In the second embodiment, the filter device 46 is configured by three filter units 1. However, the quantity of the filter units 1 may be arbitrarily set according to the processing capacity required for the filtration process. it can. That is, the filter device 46 can be configured by connecting two or more filter units 1 in consideration of the processing capability required in the applied system, the replacement frequency of the filter cartridge 23, and the like. .

  In the first and second embodiments, the water to be treated is caused to flow from the supply unit 30 to the recovery unit 31 with respect to the filter cartridge 23, but the supply direction of the water to be treated is reversed. It may be set. That is, when the water to be treated is supplied from the outflow passage 37 and the treated water is collected from the inflow passage 32, a filtration process can be performed from the recovery unit 31 toward the supply unit 30.

External view of filter unit assembly Vertical section of joint Sectional view taken along line III-III in FIG. IV-IV sectional view of FIG. Vertical section of the filter unit assembly Sectional view taken along line VI-VI in FIG. External view of filter device assembly Longitudinal sectional view of the filter device assembled IX-IX sectional view of FIG.

1 Filter unit 2 Filter housing 3 Filter head
6 Inlet joint
7 outlet joint 8 first flow path 9 second flow path 10 supply flow path
11 annular wall 12 recovery flow path
15 First tightening flange
19 Groove 23 Filter cartridge
32 Inflow channel
37 Outflow
34 Second tightening flange
40 Third tightening flange
43 cap
44 Pressing plate
45 First connection member 46 Filter device
49 Second connecting member

Claims (2)

(A) Supply channel 10 formed along a central axis of a cylindrical head main body and made of a cylindrical hole opening toward the lower surface of the head main body; a cylinder penetrating the head main body in a direction perpendicular to the supply flow channel 10 A first flow path 8 made of a tubular body erected on the peripheral edge of each end of the cylindrical hole; and a first flow path 8 which communicates with the opposing surface of a prismatic body suspended from the upper surface of the supply flow path 10. A second flow path 9 comprising a cylindrical hole formed on the same axis; a communication hole communicating with the second flow path 9 and opening on the lower surface of the prismatic body along the central axis of the head body, and an opening periphery of the communication hole Formed on the both ends of the conduit of the first channel 8; and the recovery channel 12 formed of the annular wall 11 erected on the groove; the groove 19 formed on the inner peripheral wall along the axial direction of the first channel 8; A filter head 3 comprising a first clamping flange 15;
(B) a filter housing 2 attached to the lower surface opening of the filter head 3;
(C) a hollow cylindrical filter cartridge 23 housed in the filter housing 2 and having an outer peripheral surface communicating with the supply flow path 10 and an inner peripheral surface communicating with the recovery flow path 12;
(D) a cylindrical hole penetrating along the central axis of the cylindrical joint body, and an inflow path 32 including a tubular body erected on the peripheral edge of one of the cylindrical holes via a reduced diameter portion; and the tubular body The second tightening flange 34 is formed at the end opposite to the first tightening flange 15, and the second tightening flange 34 is connected to the first tightening flange 15 in a state where the inflow path 32 and the first flow path 8 are arranged coaxially. An inlet joint 6 constituting a fluid inlet to the filter head 3 by coupling with
(E) a cylindrical hole penetrating along the central axis of the cylindrical joint body, and an outflow passage 37 including a tubular body standing upright at one peripheral edge of the cylindrical hole via a reduced diameter portion; and the tubular body The third tightening flange 40 is formed in the end portion on the opposite side of the first tightening flange 40, and the third tightening flange 40 is arranged in the state where the outflow passage 37 and the first flow passage 8 are arranged coaxially. And an outlet joint 7 constituting a fluid outlet for the filter head 3,
(F) On the fluid inlet side, a disk-shaped cap 43 fixed by a pressing plate 44 disposed along the groove 19 in the first flow path 8 and sealing the opening of the second flow path 9;
(G) On the fluid outlet side, it extends from the first flow path 8 to the cylindrical hole portion of the outflow path 37 and is sandwiched between the opening peripheral edge portion of the second flow path 9 and the reduced diameter portion of the outflow path 37. Accordingly, the filter device includes a cylindrical first connection member 45 that connects the second flow path 9 to the tubular body of the outflow path 37. (A) A supply channel 10 formed along a central axis of a cylindrical head body and formed by a cylindrical hole that opens toward the lower surface of the head body; a cylinder that penetrates the head body in a direction orthogonal to the supply channel 10 A first flow path 8 made of a tubular body erected on the peripheral edge of each end of the cylindrical hole; and a first flow path 8 which communicates with the opposing surface of a prismatic body suspended from the upper surface of the supply flow path 10. A second flow path 9 comprising a cylindrical hole formed on the same axis; a communication hole that communicates with the second flow path 9 and opens to the lower surface of the prismatic body along the central axis of the head body, and an opening periphery of the communication hole Formed on the both ends of the tubular body of the first flow path 8; the recovery flow path 12 composed of the annular wall 11 standing upright; the groove 19 formed in the inner peripheral wall along the axial direction of the first flow path 8; Two having a first fastening flange 15 and each of the first flow paths 8 being coaxially arranged adjacent to each other A filter head 3 above,
(B) a filter housing 2 attached to the lower surface opening of each filter head 3;
(C) a hollow cylindrical filter cartridge 23 housed in each filter housing 2 and having an outer peripheral surface communicating with the supply flow path 10 and an inner peripheral surface communicating with the recovery flow path 12;
(D) a cylindrical hole penetrating along the central axis of the cylindrical joint body, and an inflow path 32 including a tubular body erected on the peripheral edge of one of the cylindrical holes via a reduced diameter portion; and the tubular body And a second clamping flange 34 formed at the end opposite to the first clamping flange 34, and the second clamping flange 34 in the first position in the leading position in a state where the inflow channel 32 and the first channel 8 are arranged coaxially. An inlet joint 6 constituting a fluid inlet for a group of filter heads 3 by coupling with the flange 15;
(E) a cylindrical hole penetrating along the central axis of the cylindrical joint body, and an outflow passage 37 including a tubular body standing upright at one peripheral edge of the cylindrical hole via a reduced diameter portion; and the tubular body The third fastening flange 40 is formed at the end opposite to the first fastening flange 40, and the third fastening flange 40 is placed in the first fastening position in the rear position in a state where the outflow passage 37 and the first passage 8 are arranged coaxially. An outlet joint 7 that constitutes a fluid outlet for the group of filter heads 3 by coupling with the flange 15;
(F) On the fluid inlet side, a disk-shaped cap 43 fixed by a pressing plate 44 disposed along the groove 19 in the first flow path 8 and sealing the opening of the second flow path 9;
(G) On the fluid outlet side, it extends from the first flow path 8 to the cylindrical hole portion of the outflow path 37 and is sandwiched between the opening peripheral edge portion of the second flow path 9 and the reduced diameter portion of the outflow path 37. A cylindrical first connecting member 45 that connects the second flow path 9 to the tube of the outflow path 37,
(H) In the filter heads 3 adjacent to each other, the second flow is arranged so as to extend from the first flow path 8 of the leading filter head 3 into the first flow rate 8 of the trailing filter head 3. A cylindrical second connection member 49 that connects the second flow paths 9 by being sandwiched between the peripheral edges of the opening of the path 9, and
(I) A filter device characterized in that the first fastening flanges 15 of the filter heads 3 adjacent to each other are coupled to each other.

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