JP2015066486A - Capsule filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a capsule filter which can reduce the number of components, and can simplify a manufacturing process.SOLUTION: A capsule filter 1 includes: a head part 10 having a cylindrical outflow part 13 communicating with an internal flow passage 2a and a cylindrical inflow part communicating with an external flow passage 2b, and is fixed so as to close an opening of a case 3; and a ball valve 21 which opens and closes the outflow part 13. The outflow part 13 includes: a protrusion part 13d which protrudes from an inner circumference surface 13c of the outflow part 13, and a projection 13e which is protruded from the inner circumference surface 13c of the outflow part 13 and is positioned on a case 3 side from the protrusion part 13d. The protrusion part 13d and the projection 13e are separated in a flow direction of a fluid, and the ball valve 21 is arranged between the protrusion part 13d and the projection 13e.

Description

  The present invention relates to a capsule filter.

  Patent Document 1 describes a water purifier including a capsule cartridge including a cartridge that is a cylindrical filter, and a housing that supplies raw water to the capsule cartridge. In this capsule cartridge, the cartridge, a raw water supply pipe for supplying raw water from the housing to the cartridge, and a purified water discharge pipe for discharging the purified water filtered by the cartridge to the housing are incorporated in the capsule. In the raw water supply pipe, the rod-shaped push-up tool provided in the housing pushes up the ball valve to open the flow path, so that raw water can be supplied from the housing to the cartridge. Each of the raw water supply pipe and the purified water discharge pipe has a ball valve that opens and closes a flow path in the pipe, a convex body that protrudes from the inner peripheral surface of each pipe and restricts the movement of the ball valve toward the housing, And a spring for biasing the ball valve toward the convex body.

  The spring is pressed by a pressing plate that supports the cartridge in the capsule. From the lower surface of the presser plate, three holding rods hang down so as to surround the spring, and the lateral displacement of the spring is prevented by these holding rods. In this capsule cartridge, when raw water is supplied into the capsule from the raw water supply pipe, the raw water enters between the capsule and the cartridge and is sequentially purified by entering the cartridge. The purified water purified by the cartridge enters the through hole in the cartridge and flows down, and is sent out to the purified water pipe through the hole formed in the holding plate and the purified water discharge pipe.

JP-A-9-234461

  In the capsule filter described in Patent Document 1 described above, a holding plate having a holding rod is provided inside the capsule, and two holes are provided at the bottom of the capsule, and raw water is supplied to these holes. A pipe and a purified water discharge pipe are inserted. Therefore, when manufacturing the above capsule cartridge, it is necessary to form two holes in the capsule and to manufacture a pressing plate having a complicated shape. Therefore, in the capsule filter as described above, it is important to reduce the number of parts and simplify the manufacturing process.

  In one aspect, the present invention accommodates a filter material in a case, and the fluid supplied to one of the first channel and the second channel in the case passes through the filter material to the other. A capsule filter that filters a fluid by flowing into a flow path, and has a cylindrical first inflow / outflow portion that communicates with the first flow path, and a cylindrical second inflow / outflow portion that communicates with the second flow path And a first valve body that opens and closes the first inflow / outflow portion, and the first outflow / inflow portion is a first inflow / outflow portion of the first inflow / outflow portion. A first projecting portion projecting from the inner peripheral surface, and a second projecting portion projecting from the inner peripheral surface of the first inflow / outflow portion and positioned on the case side with respect to the first projecting portion, The first protrusion and the second protrusion are separated from each other in the fluid flow direction, and the valve body includes the first protrusion and the second protrusion. It is disposed between the.

  The capsule filter according to this aspect includes a head portion having a cylindrical first inflow / outflow portion and a cylindrical second inflow / outflow portion, and a first valve body that opens and closes the first inflow / outflow portion. The head portion is fixed so as to close the opening of the case. The first valve body protrudes from the inner peripheral surface of the first inflow / outflow portion, protrudes from the inner peripheral surface of the first inflow / outflow portion, and is closer to the case side than the first protrusion. Between the second protrusion and the second protrusion. Further, when the head portion is attached to the housing, for example, the valve body is pushed up from the housing side by a rod-like push-up tool provided in the housing and moved to the case side, so that the valve body opens the first inflow / outflow portion. . On the other hand, when the head part is removed from the housing, the valve element moves toward the first projecting part and comes into contact with the first projecting part even if the fluid in the case tries to flow out from the first inflow / outflow part. Thus, since the first inflow / outflow portion is closed, fluid leakage from the first inflow / outflow portion is prevented by the valve body. Therefore, since the fluid leakage prevention can be realized by the head portion having the first inflow / outflow portion and the valve body, the configuration for the leakage prevention in the first inflow / outflow portion can be simplified. In addition, the number of parts can be reduced as compared with the prior art, and the manufacturing process can be simplified. In this way, the reduction in the number of parts and the simplification of the manufacturing process can be realized, which contributes to a reduction in manufacturing costs.

  In another aspect, the head part may be integrally formed of resin.

  In another aspect, a first elastic member that biases the first valve body toward the first protrusion may be provided in the first inflow / outflow portion.

  In another aspect, at least three second protrusions may be provided at substantially equal intervals in the circumferential direction of the first inflow / outflow portion.

  In another aspect, it further includes a second valve body that opens and closes the second inflow / outflow portion, and the second outflow / inflow portion has a third protrusion that protrudes from the inner peripheral surface of the second outflow / inflow portion, At least a part of the opening on the case side in the second inflow / outflow portion may be covered with a filter material.

  In another aspect, a second elastic member that urges the second valve body toward the third protruding portion may be provided in the second inflow / outflow portion.

  According to the present invention, a process for manufacturing or attaching a part that holds the valve body is not required, and therefore a capsule filter that can reduce the number of parts and simplify the manufacturing process can be provided. Further, since the head portion having the first inflow / outflow portion and the second inflow / outflow portion is fixed so as to block the opening of the case, the residual fluid remaining in the case is reduced by reducing the locations where the fluid remains in the case. Can be reduced. Further, since the fluid is prevented from leaking from the first inflow / outflow portion by the valve body, it is possible to avoid a situation where the fluid contacts the operator even when the head portion is removed from the housing.

It is a side view which shows the capsule filter which concerns on this embodiment. It is sectional drawing of the capsule filter along the AA line of FIG. It is a disassembled perspective view of the capsule filter of FIG. It is a perspective view which shows the housing which can attach the capsule filter of FIG. It is the perspective view of the head part seen from the housing side. It is the perspective view of the head part seen from the case side. It is sectional drawing which shows a head part. It is the bottom view which looked at the head part from the case side. It is a figure which shows the positional relationship of an outflow part and a ball valve. It is a perspective view which shows the state which put the ball valve on the protrusion. It is a perspective view which shows the state which inserted the spring member in the outflow part. It is a perspective view which shows the state which the insertion to the outflow part of a spring member was completed. It is a side view which shows the capsule filter which concerns on a modification. It is sectional drawing of the capsule filter along the BB line of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the following embodiment.

  The capsule filter 1 of this embodiment shown in FIGS. 1 to 3 removes dirt from the fluid to be filtered received from the outlet 51 of the housing 50 shown in FIG. 4 and supplies it to the inlet 52 of the housing 50, for example. An apparatus for filtering a fluid to be filtered. The housing 50 is provided with a rod-shaped push-up tool 53 that pushes up the ball valve (first valve body) 21 in the outflow portion (first inflow / outflow portion) 13 through which the filtered fluid flows out to open the outflow portion 13. The pusher 53 is movable up and down with respect to the inlet 52 of the housing 50. The pusher 53 is made of, for example, metal, but may be made of another material.

  Examples of the fluid to be filtered by the capsule filter 1 include lithium ion electrolyte, electrode material slurry, coating liquid (photosensitive agent, pressure-sensitive adhesive, adhesive, etc.), film material (brightness enhancement film, surface protective film, polarizing film). , Antireflection film, alignment film, wrapping film, etc.), transparent resin, resist solution, detergent, cosmetics (gel etc.), drug, organic solvent, food material, or drinking water.

  Below, the structure of the capsule filter 1 is demonstrated with reference to FIGS. 1-3. The capsule filter 1 includes a cylindrical filter cartridge (filter material) 2, a cylindrical or bag-like case 3 that accommodates the filter cartridge 2, and a head portion to which the filter cartridge 2 and the case 3 are fixed by adhesion or welding. 10. In each figure, the direction in which the filter cartridge 2 is viewed from the head unit 10 is the Z-axis positive direction, and the Z-axis, the X-axis, and the Y-axis are described.

  The case 3 has a circular opening 3a and is made of a highly flexible material such as a film. An end portion of the case 3 opposite to the opening 3a is sealed with, for example, a welding portion 3b extending linearly. The shape of the case 3 is not limited to the above and can be changed as appropriate. The material of the case 3 is not limited to a highly flexible material such as a film, and a cylindrical hard case, for example, can be used instead of the case 3.

  The filter cartridge 2 extends in the vertical direction, and the filter cartridge 2 that has entered the case 3 has an internal flow path 2 a formed inside the filter cartridge 2 and an external flow formed outside the filter cartridge 2. A path 2b is formed. The external flow path 2b is a flow path (one flow path) into which the fluid before filtration flows, and the internal flow path 2a is a flow path (the other flow path) through which the fluid after filtration flows down. The fluid to be filtered is supplied from the lower side of the filter cartridge 2 to the external flow path 2b, and the fluid supplied to the external flow path 2b is filtered by flowing into the internal flow path 2a through the filter cartridge 2.

  A head portion 10 is joined to the lower side of the filter cartridge 2, and the upper end of the internal flow path 2 a in the filter cartridge 2 is sealed with a disk-shaped cap portion 4. The cap portion 4 and the filter cartridge 2 may be separate members, or may be an integrated structure in which the cap portion 4 and the filter cartridge 2 are fixed integrally. Moreover, the shape of the cap part 4 is not restricted to disk shape, It can change suitably.

  The head unit 10 has a function of supplying the fluid from the housing 50 to the external flow path 2 b and discharging the fluid flowing down the internal flow path 2 a to the housing 50. The head unit 10 is manufactured, for example, by integral molding, and is made of an olefin material such as PP (polypropylene) or PE (polyethylene), or a resin material such as polyacetal or polyamide.

  As shown in FIG. 5, the head portion 10 is formed at a cylindrical head main body 11 to which the filter cartridge 2 and the case 3 are joined, and an end of the head main body 11 on the housing 50 side (upper side in FIG. 5). The flange portion 12, the cylindrical outflow portion 13 that protrudes from the surface 11a of the head main body 11 to the housing 50 side and flows through the internal flow path 2a toward the housing 50, and the surface 11a of the head main body 11 toward the housing 50 side. And a cylindrical inflow portion (second inflow / outflow portion) 14 through which fluid flows from the housing 50 toward the external flow path 2b. When viewed from the extending direction of the axis L <b> 1, which is the central axis of the cylindrical outflow portion 13, the outflow portion 13 is located in the center portion of the head portion 10, and the inflow portion 14 is located closer to the head portion 10 than the outflow portion 13. Located on the outer edge side.

  As shown in FIGS. 2 and 6, the bottom surface 11 b of the head main body 11 has a cylindrical filter contact portion 11 c that contacts the inner peripheral surface 2 c of the filter cartridge 2 and an inner periphery of the end surface 2 d of the filter cartridge 2. And a filter pressing portion 11d that presses the end surface 2d when the side is pushed in. When the filter cartridge 2 is pushed into the head body 11, the outer peripheral surface of the filter contact portion 11 c comes into contact with the inner peripheral surface 2 c of the filter cartridge 2, and the filter pressing portion 11 d has an inner periphery of the end surface 2 d of the filter cartridge 2. The inner channel 2a is sealed by pressing the side.

  The outer diameter of the filter contact portion 11c is slightly longer than the diameter of the inner peripheral surface 2c of the filter cartridge 2, and when the filter cartridge 2 is joined to the inside of the head body 11, the filter contact portion 11c. Thus, the filter cartridge 2 is joined to the head body 11 in a state where the inner peripheral surface 2c is expanded. The internal space of the filter contact portion 11c communicates with the outflow portion 13, and the fluid in the internal flow path 2a of the filter cartridge 2 passes through the internal space of the filter contact portion 11c and the outflow portion 13 to the housing 50. Discharged.

  The filter pressing portion 11d includes three annular protrusions 11e formed substantially concentrically around the filter abutting portion 11c, and a part of the annular protrusion 11e is cut away to form an inner peripheral surface of the inflow portion 14. A continuous notch 11g is formed. The annular protrusion 11e formed in this way is in contact with the inner peripheral side of the end surface 2d of the filter cartridge 2 to ensure the sealing performance of the internal flow path 2a.

  In the head body 11, the shape and arrangement of the filter contact portion 11c and the filter pressing portion 11d can be changed as appropriate, and the internal flow path 2a is sealed with a configuration other than the filter contact portion 11c and the filter pressing portion 11d. It may be realized.

  The diameter of the head main body 11 is such that the sealability can be secured with respect to the diameter of the opening 3a (see FIG. 3) in the case 3, and the head main body 11 can be inserted into the opening 3a. Yes. Further, the outer peripheral surface 11f of the head main body 11 serves as a joint portion to which the inner surface 3c of the case 3 is joined, and the inner surface 3c of the case 3 is joined to the outer peripheral surface 11f by adhesion or welding, for example. Sealing performance inside is ensured.

  The outflow portion 13 formed in a cylindrical shape is inserted, for example, into the inflow port 52 of the housing 50, and is provided for allowing the filtered fluid to flow out from the internal flow path 2 a of the filter cartridge 2 to the inflow port 52. As shown in FIGS. 7 and 8, an annular recess 13b for mounting the O-ring 5 (see FIG. 2) is formed on the outer peripheral surface 13a of the outflow portion 13, and the O-ring 5 is connected to the annular recess 13b. As a result, the sealing property between the outflow portion 13 and the inflow port 52 of the housing 50 is secured.

  The inner peripheral surface 13c of the outflow portion 13 protrudes from the inner peripheral surface 13c and is formed in an annular shape when viewed from the extending direction of the axis L1, and three protrusions located closer to the case 3 than the protruding portion 13d. The protrusion 13e is provided, and the protrusion 13d and the three protrusions 13e are separated in the fluid flow direction (axis L1 direction). Between the protruding portion 13d and the three protrusions 13e, a ball valve 21 that functions as a valve body that opens and closes the outflow portion 13 and a spring member that urges the ball valve 21 toward the protruding portion 13d (first elastic member). Member) 22 and an arrangement space 13f for arranging the member 22 is formed.

  In a state where the capsule filter 1 is not attached to the housing 50, the ball valve 21 is pressed against the protruding portion 13d. 13 d of protrusion parts are formed in the inner peripheral surface 13c of the outflow part 13 over the perimeter while extending in the circumferential direction. Therefore, the outflow portion 13 is closed by the ball valve 21 coming into contact with the protruding portion 13d by the urging force of the spring member 22, so that the fluid is prevented from flowing out from the outflow portion 13.

  Further, a tapered surface 13g is formed on the side of the arrangement space 13f of the protruding portion 13d so as to incline toward the outside of the arrangement space 13f toward the axis L1. The tapered surface 13g is for corresponding to the shape of the ball valve 21 that contacts the protruding portion 13d, and the contact area of the ball valve 21 with respect to the protruding portion 13d is wider than when the tapered surface 13g is not provided. Yes. Therefore, even if the ball valve 21 repeatedly contacts the protruding portion 13d, the ball valve 21 and the protruding portion 13d are not easily damaged.

  The protrusions 13e are disposed at three locations along the circumferential direction on the inner peripheral surface 13c of the outflow portion 13, and the protrusions 13e are disposed at substantially equal intervals with a phase angle of 120 degrees. When viewed from the direction in which the axis L1 extends, each protrusion 13e has a trapezoidal shape that tapers toward the axis L1, and is less likely to be damaged by thickening the base side (opposite the axis L1). It has become. A taper surface 13h is formed on the side of the ball valve 21 of each protrusion 13e. The taper surface 13h is inclined to the outside of the arrangement space 13f toward the axis L1. Further, as shown in FIG. 9, the diameter of the imaginary circle A connecting the tip surfaces 13 j of the protrusions 13 e is about 1.0 mm shorter than the diameter of the ball valve 21.

  As shown in FIG. 7, in the arrangement space 13f of the outflow portion 13, a spring member 22 is arranged between the protrusion 13e and the ball valve 21 that contacts the protruding portion 13d. Here, the material of the ball valve 21 can be, for example, the same resin material as that of the head unit 10. The material of the spring member 22 is preferably a metal such as iron from the viewpoint of setting the spring constant to an appropriate value, but may be another material, for example, the same resin material as the head unit 10. It may be. Thus, it is also possible to make all the head part 10, the ball valve 21, and the spring member 22 from resin.

  The spring member 22 is, for example, a conical coil spring that linearly decreases in diameter from the large diameter portion 22a toward the small diameter portion 22b in a side view. The small diameter portion 22b faces the ball valve 21 side, and the large diameter portion 22a faces the protrusion 13e. It arrange | positions in the arrangement | positioning space 13f so that it may face. In place of the spring member 22 that is a conical coil spring, for example, a coil spring that is curvilinearly reduced from a large diameter portion toward a small diameter portion in a side view may be used. In a state where the spring member 22 is arranged in the arrangement space 13f, the fluid flows between the coil wires of the spring member 22. Further, since the diameter of the small diameter portion 22b in the spring member 22 is shorter than the diameter of the ball valve 21, the ball valve 21 can be biased by the small diameter portion 22b of the spring member 22 in the arrangement space 13f.

  The diameter of the large-diameter portion 22a in the spring member 22 is longer than the diameter of the ball valve 21 and longer than the diameter of a virtual circle A (see FIG. 9) that connects the tip surfaces 13j of the three protrusions 13e. Therefore, since the large-diameter portion 22a of the spring member 22 contacts each protrusion 13e in the arrangement space 13f, the spring member 22 is pressed by the three protrusions 13e, and the spring member 22 is more than the arrangement space 13f in the filter cartridge. Moving to the second side is prevented.

  The inflow portion 14 formed in a cylindrical shape is inserted, for example, into the outlet 51 of the housing 50, and is provided to allow the fluid before filtration to flow from the outlet 51 into the external flow path 2b of the filter cartridge 2. . The configuration of the inflow portion 14 is the same as the configuration of the outflow portion 13 except that the inflow portion 14 does not have three protrusions 13e.

  An annular recess 14b for mounting the O-ring 6 (see FIG. 1) is formed on the outer peripheral surface 14a of the inflow portion 14, and by attaching the O-ring 6 to the annular recess 14b, the inflow portion 14 and The sealing property with the outflow port 51 of the housing 50 is ensured. The inner peripheral surface 14c of the inflow portion 14 is provided with a protrusion (third protrusion) 14d that protrudes from the inner peripheral surface 14c and is formed in an annular shape when viewed from the extending direction of the axis L2 of the inflow portion 14. . The axis L2 is the central axis of the cylindrical inflow portion 14.

  The protruding portion 14 d of the inflow portion 14 has the same shape as the protruding portion 13 d of the outflow portion 13 and has a tapered surface 14 g similar to the tapered surface 13 g of the outflow portion 13. Between the protruding portion 14d and the end surface 2d of the filter cartridge 2, a ball valve (second valve body) 23, which is a valve body that opens and closes the inflow portion 14, and the ball valve 23 are urged toward the protruding portion 14d. An arrangement space 14f in which the spring member (second elastic member) 24 is arranged is formed. Since the configurations and functions of the ball valve 23 and the spring member 24 are the same as the configurations and functions of the ball valve 21 and the spring member 22 of the outflow portion 13, description thereof is omitted.

  When the inflow portion 14 is viewed from the housing 50 side (upper side in FIG. 7) in a state where the filter cartridge 2 is joined to the head body 11, a part of the opening 14k on the case 3 side of the inflow portion 14 is part of the filter cartridge. 2 is covered with the end face 2d. A spring member 24 having a large diameter portion 24a and a small diameter portion 24b is disposed in the same manner as the spring member 22 in the outflow portion 13 between the end surface 2d of the filter cartridge 2 and the ball valve 23 in contact with the protruding portion 14d. Yes. In the inflow portion 14, since the spring member 24 is pressed by the end surface 2 d of the filter cartridge 2, the movement of the spring member 24 toward the case 3 is prevented.

  Next, a method for manufacturing the capsule filter 1 by assembling the filter cartridge 2, the case 3, and the head portion 10 will be described.

  First, as shown in FIG. 10, the ball valve 21 is placed on the protrusion 13 e of the outflow portion 13 in the head portion 10. When the ball valve 21 is pushed into the protrusion 13e, the protrusion 13e made of a resin material is bent, and the ball valve 21 is inserted into the arrangement space 13f by the bending of the protrusion 13e. In the inflow portion 14, the ball valve 23 is inserted into the arrangement space 14 f of the inflow portion 14.

  After the ball valve 21 is inserted into the outflow portion 13, the spring member 22 is inserted into the arrangement space 13 f of the outflow portion 13 as shown in FIG. 11. After the spring member 22 is retracted into the arrangement space 13f, as shown in FIG. 12, the spring member 22 is tilted so that the small diameter portion 22b contacts the ball valve 21 and the three large diameter portions 22a are provided. The spring member 22 is arranged so as to be in contact with the projection 13e. In addition, after the ball valve 23 is inserted into the inflow portion 14 in the inflow portion 14, the spring member 24 is inserted into the arrangement space 14 f of the inflow portion 14 as in the case of the outflow portion 13. The spring member 24 is arranged in the arrangement space 14f so that 24b (see FIG. 7) is in contact with the ball valve 23.

  Before and after inserting the spring member 22 into the arrangement space 13f of the outflow portion 13 and inserting the spring member 24 into the arrangement space 14f of the inflow portion 14, as shown in FIGS. The upper end of the internal channel 2 a is sealed with the cap portion 4, and then the filter cartridge 2 is joined to the head body 11 of the head portion 10. At this time, in the filter cartridge 2, the inner peripheral surface 2c of the filter cartridge 2 is expanded by the filter contact portion 11c of the head main body 11, and the inner peripheral side of the end surface 2d of the filter cartridge 2 becomes the filter pressing portion 11d of the head main body 11. In the pressed state, the head portion 10 is bonded by adhesion or welding. Then, the case 3 is covered with the filter cartridge 2, and the inner surface 3c of the case 3 is joined to the outer peripheral surface 11f of the head body 11 by bonding or welding, whereby the capsule filter 1 is completed.

  Thereafter, the outflow portion 13 of the head portion 10 is inserted into the inflow port 52 of the housing 50 and the inflow portion 14 of the head portion 10 is inserted into the outflow port 51 of the housing 50, so that the flange portion 12 of the head portion 10 is inserted into the housing 50. The capsule filter 1 is attached to the housing 50 by being pushed into and fitted into the inner peripheral surface 50a. At this time, since the rod-like push-up tool 53 is inserted into the inflow port 52, the push-up tool 53 pushes up the ball valve 21 of the outflow part 13 against the urging force of the spring member 22. Becomes open. After mounting the capsule filter 1 on the housing 50, for example, a metal holder having a bottomed cylindrical shape is placed on the capsule filter 1 from above and attached to the housing 50, whereby the capsule filter 1 is held by the holder. May be.

  Next, the flow of fluid in a state where the capsule filter 1 is mounted on the housing 50 will be described.

  First, when a fluid flows from the outlet 51 of the housing 50 toward the capsule filter 1, the ball valve 23 in the inflow portion 14 is pushed up against the urging force of the spring member 24 by this fluid, and the fluid flows into the inflow portion 14. Enters the case 3 and flows into the external flow path 2b. The fluid that has entered the case 3 from the inflow portion 14 is filtered by entering the filter cartridge 2 from the outer peripheral surface 2f of the filter cartridge 2 and enters the internal flow path 2a. The fluid filtered by the filter cartridge 2 and entering the internal flow path 2 a flows down the internal flow path 2 a, flows out from the outflow portion 13 opened by the push-up tool 53, and is discharged to the inflow port 52 of the housing 50. .

  As described above, the capsule filter 1 according to the present embodiment includes the head portion 10 having the cylindrical outflow portion 13 and the cylindrical inflow portion 14, and the ball valve 21 that opens and closes the outflow portion 13. The head portion 10 closes the opening 3 a of the case 3. The ball valve 21 includes a protrusion 13d that protrudes from the inner peripheral surface 13c of the outflow portion 13, and three protrusions that protrude from the inner peripheral surface 13c of the outflow portion 13 and are located closer to the case 3 than the protrusion 13d. 13e. Further, when the head portion 10 is attached to the housing 50, the ball valve 21 is pushed up from the housing 50 side by the rod-like push-up tool 53 provided on the housing 50 and moved to the case 3 side, so that the outflow portion 13 is opened. Is done.

  On the other hand, when the head part 10 is removed from the housing 50, even if the fluid in the case 3 is about to flow out from the outflow part 13, the ball valve 21 moves to the projecting part 13d side and comes into contact with the projecting part 13d. Since the portion 13 is closed, fluid leakage from the outflow portion 13 is prevented by the ball valve 21. Therefore, even if the head part 10 is removed from the housing 50, it is possible to avoid a situation where the fluid contacts the worker. Further, since the fluid leakage prevention can be realized by the head portion 10 having the outflow portion 13 and the ball valve 21, the configuration for the leakage prevention in the outflow portion 13 can be simplified. Further, since it is not necessary to prepare a member for holding the ball valve 21 in the outflow portion 13 as a separate part, the number of parts can be reduced as compared with the conventional case, and the manufacturing process can be simplified. Thus, the reduction of the number of parts and the simplification of the manufacturing process contribute to the reduction of manufacturing costs.

  Moreover, since the head part 10 is integrally molded with resin, the manufacturing process can be simplified.

  A spring member 22 that urges the ball valve 21 toward the protruding portion 13d is provided in the outflow portion 13. In a state where the capsule filter 1 is removed from the housing 50, the ball valve 21 is urged toward the protruding portion 13d by the spring member 22, and the ball valve 21 is in contact with the protruding portion 13d. Outflow can be prevented.

  Three protrusions 13 e of the outflow portion 13 are provided at substantially equal intervals in the circumferential direction of the outflow portion 13. Therefore, as shown in FIG. 9, since there is no other protrusion 13e on the straight line L3 connecting the center O of the outflow portion 13 and the protrusion 13e when viewed from the extending direction of the axis L1, the spring member 22 is It is easy to insert into the arrangement space 13f. Further, when three protrusions 13e are provided at substantially equal intervals in the circumferential direction, when the spring member 22 in the arrangement space 13f is in contact with the three protrusions 13e, the contact force is applied to each protrusion 13e. Since they can be distributed in a balanced manner, the spring member 22 can be supported in a balanced manner by a small number of protrusions 13e, and the situation in which the spring member 22 in the arrangement space 13f is tilted or detached does not occur.

  As shown in FIG. 7, a ball valve 23 that opens and closes the inflow portion 14 is provided in the inflow portion 14, and the inflow portion 14 has a protruding portion 14 d that protrudes from the inner peripheral surface 14 c of the inflow portion 14. A part of the opening 14 k on the case 3 side in the inflow portion 14 is covered with the filter cartridge 2. Therefore, since the spring member 24 is pressed by the end surface 2d of the filter cartridge 2, a new part for pressing the spring member 24 becomes unnecessary, and the projection 13e in the outflow portion 13 is not necessary, and the end surface 2d of the filter cartridge 2 is pressed by the spring member 24. Since it can be effectively used as a structure for holding down, it is advantageous for cost reduction.

  Further, since the spring member 24 for urging the ball valve 23 toward the protruding portion 14d is provided in the inflow portion 14, the same as in the case where the spring member 22 is provided in the outflow portion 13, from the inflow portion 14. The outflow of the fluid can be prevented.

  Further, in the capsule filter 1, the ball valve 21 can be inserted into the arrangement space 13f of the outflow portion 13 by pushing the ball valve 21 into the projection 13e and bending the projection 13e. As described above, the ball valve 21 can be easily inserted into the arrangement space 13f simply by pushing the ball valve 21 into the protrusion 13e, so that the assembling work can be easily performed.

  In the capsule filter 1, the head portion 10 includes a cylindrical outflow portion 13 and an inflow portion 14 that protrude outward, and the outflow portion 13 includes a protrusion 13 d and a protrusion 13 e on the inner peripheral surface 13 c, and the inflow portion 14 has a simple configuration in which a protrusion 14d is provided on the inner peripheral surface 14c. And since the head part 10 is fixed so that the opening 3a of the case 3 may be plugged up, the remaining part of the fluid in the case 3 and the inside of the head part 10 can be reduced as much as possible. Accordingly, the residual fluid remaining inside the capsule filter 1 can be reduced.

  In the capsule filter 1, since the material of the case 3 is a highly flexible material such as a film, the fluid can be sufficiently stored inside the case 3. Further, when removing the capsule filter 1 from the housing 50 for replacement, it is possible to easily remove the residual fluid by cutting the case 3 with scissors or the like and reuse it, and to easily collect the residual fluid. It has become. Furthermore, the case 3 can be easily discarded. Further, when a bag-like film is used as the case 3, the cost can be reduced as compared with the case where a hard cylindrical molded product is used.

  Incidentally, some conventional capsule filters have no valve at the outflow portion and the inflow portion. In such a capsule filter, it may be necessary to tilt the capsule filter so that fluid does not spill from the capsule filter when it is removed from the housing.

  However, in the capsule filter 1 of the present embodiment, when the capsule filter 1 is removed from the housing 50, the ball valve 21 in the outflow portion 13 closes the outflow portion 13 and the ball valve 23 in the inflow portion 14 also has the inflow portion. 14 is closed. Therefore, since the outflow portion 13 and the inflow portion 14 are automatically closed only by removing the capsule filter 1 from the housing 50, the fluid can be easily removed from the housing 50 without spilling the fluid without tilting the capsule filter 1. it can. Therefore, the capsule filter 1 can be easily exchanged for the housing 50.

  In the capsule filter 1, a spherical ball valve 21 is used as a valve body for opening and closing the outflow portion 13, and a spherical ball valve 23 is also used as a valve body for opening and closing the inflow portion 14. Here, if the valve body in the outflow portion 13 is not spherical, when the valve body moves out of the axis L1 in the arrangement space 13f, the valve body does not fit into the protruding portion 13d, so that the outflow portion 13 There is a possibility that the occlusion is not properly performed. However, in the present embodiment, since the spherical ball valve 21 is arranged in the outflow portion 13, even if the ball valve 21 moves out of the axis L1, the ball valve 21 can easily be fitted into the protruding portion 13d. Therefore, the outflow part 13 can be properly closed. The same applies to the spherical ball valve 23 in the inflow portion 14.

  In the capsule filter 1, the ball valve 21 in the outflow portion 13 and the ball valve 23 in the inflow portion 14 are the same, and the spring member 22 in the outflow portion 13 and the spring member 24 in the inflow portion 14 are the same. is there. Since the parts are shared in this way, the capsule filter 1 can be easily manufactured, contributing to a reduction in manufacturing cost.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above. Hereinafter, modified examples of the capsule filter according to the present invention will be described.

  A capsule filter 61 according to a modification will be described with reference to FIGS. 13 and 14. In FIG.13 and FIG.14, the same code | symbol is attached | subjected to the same component as FIGS. 1-12, and the overlapping description is abbreviate | omitted.

  The capsule filter 61 according to the modified example is different from the capsule filter 1 of the above embodiment in that a case 70 having a vent 72 is provided. The case 70 covers the filter cartridge 2 on the opposite side of the head portion 10, the vent 72, and the cover portion 73 that covers the side surface of the filter cartridge 2 and is joined to the lid portion 71 and the head portion 10. And. The vent 72 is detachably attached to the lid 71 by rotating around the axis L4 that is the central axis of the filter cartridge 2. The covering portion 73 is made of a highly flexible material such as a film as in the case 3, but may be made of another material.

  The lid portion 71 of the case 70 covers the end portion 2k of the filter cartridge 2 on the opposite side of the head portion 10 and the cap portion 4, and the cover portion 73 is adhered or welded to the side surface 71a of the lid portion 71. It is joined. The vent 72 is provided in the central portion of the lid portion 71 when viewed from the extending direction of the axis L4. By rotating the vent 72 in one direction (for example, clockwise) and attaching it to the lid portion 71, the external flow path 2b of the filter cartridge 2 can be sealed, and the vent 72 can be sealed in the other direction (for example, counterclockwise). It is possible to open the external flow path 2b by turning it around and removing it from the lid 71. Thus, by removing the vent 72 from the lid 71 and opening the external flow path 2b, it is possible to remove gas and liquid from the case 70.

  Also in the capsule filter 61 according to the modified example described above, the same effects as those of the capsule filter 1 of the above-described embodiment can be obtained.

  In addition, the capsule filter according to the present invention is not limited to the above-described embodiments and modifications, and various forms can be adopted.

  For example, the spring member 22 may be eliminated from the outflow portion 13 or the spring member 24 may be eliminated from the inflow portion 14. When the spring member 22 is eliminated from the outflow portion 13, the ball valve 21 arranged in the arrangement space 13f contacts the projection 13e even if it moves inward, so that the ball valve is inward of the arrangement space 13f by the projection 13e. 21 can be prevented from moving. In addition, when the spring member 24 is eliminated from the inflow portion 14, the ball valve 23 arranged in the arrangement space 14f contacts the end surface 2d of the filter cartridge 2 when moved inward. It is possible to prevent the ball valve 23 from moving inside 14f.

  Even without the spring member 22 of the outflow portion 13, the ball valve 21 is urged outward by the internal pressure of the fluid inside the case 3 and comes into contact with the protruding portion 13 d, so that the outflow of the fluid from the outflow portion 13 can be suppressed. . Similarly, even when the spring member 24 of the inflow portion 14 is not provided, the ball valve 23 comes into contact with the protruding portion 14d by the internal pressure of the fluid, so that the outflow of the fluid from the inflow portion 14 is suppressed.

  In addition, although the capsule filter mentioned above was mounted | worn with the upper part of the housing in the aspect extended up and down, the direction and mounting | wearing aspect with respect to the housing of a capsule filter can be changed suitably. For example, a capsule filter may be attached to the lower part of the housing, or the capsule filter may be attached to the housing in a state where the capsule filter extends to the left and right.

  Further, although the ball valve and the spring member in the outflow portion are the same as the ball valve and the spring member in the inflow portion, they may not be the same.

  In the outflow part, three trapezoidal protrusions are arranged at equal intervals in the circumferential direction of the outflow part. However, the shape of the protrusions, the arrangement interval of the protrusions, and the number of protrusions can be appropriately changed.

  Further, in the outflow portion, the ball valve and the spring member are separate bodies, but the ball valve and the spring member may be integrated. Further, instead of the spring member, another elastic member such as a sponge may be used. The same applies to the inflow portion.

  Further, the ball valve is provided in the outflow portion and the ball valve is provided in the inflow portion. However, the present invention is not limited to this configuration, and a valve body may be provided in at least one of the outflow portion and the inflow portion.

  Moreover, although the outflow part was located in the center part of the head part and the inflow part was located in the outer edge side of the head part rather than the outflow part, the position of the outflow part and the inflow part may be reversed. Furthermore, the position of the outflow part and the inflow part in the head part can be appropriately changed without being limited to the above embodiment.

  Moreover, although the cylindrical filter cartridge formed the internal flow path and the external flow path, the shape of the filter cartridge is not limited to the cylindrical shape and can be appropriately changed. That is, two flow paths are formed in the case by partitioning the internal space of the case while the filter cartridge is accommodated in the case, and the fluid supplied to one flow path in the case passes through the filter cartridge in the case. The capsule filter should just be comprised so that it may flow into the other flow path.

  INDUSTRIAL APPLICABILITY The present invention is useful as a capsule filter that can eliminate the need for a process for manufacturing or attaching a part that holds the valve body, and that can reduce the number of parts and simplify the manufacturing process.

DESCRIPTION OF SYMBOLS 1,61 ... Capsule filter, 2 ... Filter cartridge (filter material), 2a ... Internal flow path (other flow path), 2b ... External flow path (one flow path), 2c ... Inner peripheral surface, 2d ... End surface, 2f ... outer peripheral surface, 3 ... case, 3a ... opening, 3b ... welded portion, 3c ... inner surface, 10 ... head portion, 11 ... head body, 11a ... surface, 11b ... bottom surface, 11c ... filter contact portion, 11d ... filter Press part, 11e ... annular protrusion, 11f ... outer peripheral surface, 11g ... notch part, 12 ... flange part, 13 ... outflow part (first inflow / outflow part), 13a ... outer peripheral surface, 13b ... annular recess, 13c ... inner periphery Surface, 13d ... Projection (first projection), 13e ... Projection (second projection), 13f ... Arrangement space, 13g, 13h ... Tapered surface, 13j ... Tip surface, 14 ... Inflow portion, 14a ... Outer circumference Surface, 14b ... annular recess, 14c ... inner peripheral surface 14d ... Projection (third projection), 14f ... Arrangement space, 14k ... Opening, 21 ... Ball valve (first valve element), 22 ... Spring member (first elastic member), 23 ... Ball valve ( (Second valve body), 24 ... spring member (second elastic member), 50 ... housing, 51 ... outflow port, 52 ... inflow port, 53 ... push-up tool, 70 ... case, 71 ... lid, 72 ... vent 73 ... coating | coated part.

Claims (6)

The filter material is accommodated in the case, and the fluid supplied to one of the first flow path and the second flow path in the case flows into the other flow path through the filter material. A capsule filter for filtering fluid,
A cylindrical first inflow / outflow part communicating with the first flow path and a cylindrical second inflow / outflow part communicating with the second flow path are fixed so as to close the opening of the case. A head portion to be
A first valve body for opening and closing the first inflow / outflow part;
With
The first inflow / outflow part is:
A first projecting portion projecting from an inner peripheral surface of the first inflow / outflow portion;
A second protruding portion that protrudes from the inner peripheral surface of the first inflow / outflow portion and is located closer to the case than the first protruding portion;
Have
The first protrusion and the second protrusion are separated in the fluid flow direction,
The valve body is disposed between the first protrusion and the second protrusion,
Capsule filter.   The capsule filter according to claim 1, wherein the head portion is integrally formed of resin.   The capsule filter according to claim 1 or 2, wherein a first elastic member that urges the first valve body toward the first projecting portion is provided in the first inflow / outflow portion.   The capsule filter according to any one of claims 1 to 3, wherein at least three second protrusions are provided at substantially equal intervals in the circumferential direction of the first inflow / outflow part. A second valve body for opening and closing the second inflow / outflow part;
The second inflow / outflow portion has a third protrusion that protrudes from the inner peripheral surface of the second outflow / inflow portion,
At least a part of the opening on the case side in the second inflow / outflow part is covered with the filter material,
The capsule filter according to any one of claims 1 to 4.   The capsule filter according to claim 5, wherein a second elastic member that urges the second valve body toward the third projecting portion is provided in the second inflow / outflow portion.

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