JP2014062606A - Flow path control valve - Google Patents

Flow path control valve Download PDF

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Publication number
JP2014062606A
JP2014062606A JP2012208509A JP2012208509A JP2014062606A JP 2014062606 A JP2014062606 A JP 2014062606A JP 2012208509 A JP2012208509 A JP 2012208509A JP 2012208509 A JP2012208509 A JP 2012208509A JP 2014062606 A JP2014062606 A JP 2014062606A
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valve
water
provided
regeneration
opening
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JP2012208509A
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JP6066044B2 (en
Inventor
Hajime Abe
元 安部
Shinya Yamaoka
信也 山岡
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Miura Co Ltd
三浦工業株式会社
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Abstract

A flow path control valve having a simple configuration and easy to assemble and maintain is provided.
A valve cap (83) is formed by incorporating a valve piston (53) into a valve housing hole (52) of a valve housing (5). The valve piston 53 is moved up and down by a cam 47. The valve accommodating hole 52 includes a large diameter hole 115 and a small diameter hole 116, and an upper portion of the small diameter hole 116 serves as a valve seat portion 67. The valve piston 53 abuts the first seal member 77 against the valve seat portion 67 to block communication between the first opening 56 and the second opening 57. In this closed state, a chamber 94 is formed at the proximal end of the valve housing hole 52, and the chamber 94 communicates with the first opening 56 through the communication hole of the valve piston 53.
[Selection] Figure 6

Description

  The present invention relates to a flow path control valve used for opening / closing or switching a flow path. For example, the present invention relates to a flow path control valve of an ion exchange apparatus provided with an ion exchange resin bed.

  Conventionally, the valve | bulb disclosed by the following patent document 1 is known. The valve (1) includes a fluid passage (7) and a valve housing (4) in which a first port (5) and a second port (6) serving as an entrance to the fluid passage (7) are formed. The valve seat (8) is formed in the middle part. The valve element (11) that opens and closes the valve hole (9) of the valve seat (8) is urged to the valve seat (8) by the spring (30), while against the urging force, the valve shaft (16). Can be pushed back.

  A diaphragm-shaped pressure receiving body (22) is held by a retainer (21) at the lower part of the valve body (11), and a spring (30) is provided at the lower part of the retainer (21). A back pressure chamber (28) partitioned from the fluid flow path (7) by the pressure receiving body (22) is formed in the lower part of the housing (4). This back pressure chamber (28) is always connected to the first port (5) by a pressure transmission path (32) formed in the valve body (11) and a through path (33) formed in the retainer (21). Communicate.

  In the closed state in which the valve element (11) is in contact with the valve seat (8), the pressure on the first port (5) side is transmitted to the back pressure chamber (28), and the valve opening direction applied to the valve element (11) The fluid pressure in the valve closing direction is balanced. Thereby, it is not necessary to increase the urging force of the spring (30), and the driving force required for valve opening can be reduced.

  Conventionally, as disclosed in Patent Document 2 below, a water softening device including an ion exchange resin bed is known. In this type of water softening apparatus, when raw water is passed through an ion exchange resin bed, hardness components (that is, calcium ions and magnesium ions) contained in the raw water are exchanged with sodium ions in the ion exchange resin bed. Thus, the raw water can be softened by the hardness component in the raw water being adsorbed and removed by the ion exchange resin bed.

  Since the water softening device exchanges sodium ions bonded to the ion exchange resin bed with the hardness component in the raw water, there is a limit in removing the hardness component. Therefore, before the limit is reached, a regenerative agent (salt water in the case of a water softening device) is passed through the ion exchange resin bed to restore the exchange capacity. This is called regeneration of the ion exchange resin bed.

  In the water softening device, the flow path is changed according to each process such as a water flow process for softening raw water and a regeneration process for regenerating the ion exchange resin bed. For this purpose, a flow path control valve having a plurality of valves is provided on the upper part of the pressure tank that accommodates the ion exchange resin bed, and the flow path according to each process is defined by the flow path control valve. The flow path control valve includes a plurality of valves. As the structure of each valve, for example, the one disclosed in Patent Document 1 is adopted.

  In addition, the flow path control valve provided with the some valve is similarly used not only in the water softening device but also in other ion exchange devices provided with an ion exchange resin bed. That is, the flow path control valve is also used in an ion exchange apparatus that treats raw water through an ion exchange resin bed and regenerates the ion exchange resin bed through a regenerant.

JP 2007-78092 A JP 2008-55392 A

  The valve described in Patent Document 1 requires a diaphragm-shaped pressure receiving body, and requires time and effort for its mounting. Therefore, there is room for improvement in the structure, assembly and maintenance of the valve.

  When the flow path control valve includes a plurality of valves and the flow path is changed according to the process, it is necessary to arrange the valves in consideration of the ease of taking the flow path in each process. Also, in the water flow process for treating raw water, in order to increase the water flow capacity, it is necessary to increase the diameter of the flow path used in the water flow process, but the space required for each valve is different accordingly, It is necessary to arrange the valves in consideration of this.

  The problem to be solved by the present invention is to provide a flow path control valve that has a simple configuration and is easy to assemble and maintain. It is another object of the present invention to provide a flow path control valve including a plurality of valves for an ion exchange device, which can easily take a flow path in each step and can have a large water flow capacity.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 has a valve housing hole formed in the valve housing hole at a position spaced apart in the axial direction. A first opening and a second opening serving as a fluid inlet / outlet with respect to the housing hole are formed, and a valve housing provided with a valve seat between the first opening and a second opening, and the valve housing hole can be moved forward and backward. A valve piston provided with an annular first sealing material and a second sealing material at spaced positions, and the opening of the valve housing hole can be attached and detached with the valve piston incorporated in the valve housing hole. And a valve cap through which a base end portion of the valve piston is passed in a watertight state, the valve piston is operated to advance and retreat by a cam, and the first seal material is brought into contact with the valve seat portion, Ahead The communication between the first opening on the side and the second opening on the base end side is blocked, and in this state, the second sealing material forms a chamber at the base end portion of the valve accommodating hole, The flow path control valve is characterized in that it communicates with the first opening through a communication hole of a valve piston.

  According to the first aspect of the present invention, when the valve is closed, the chamber is formed at the proximal end portion of the valve housing hole, and the chamber communicates with the first opening on the distal end side through the communication hole of the valve piston. Thereby, a part or all of the fluid pressure in the valve opening direction and the valve closing direction applied to the valve piston can be balanced. Further, since the valve piston is incorporated into the valve housing hole and the opening is sealed with the valve cap, assembly and maintenance are easy.

  According to a second aspect of the present invention, the valve housing hole is vertically provided so as to open upward of the valve housing, and the first opening is formed in a peripheral side wall or a lower wall below the valve seat portion. On the other hand, the second opening is formed in the peripheral side wall above the valve seat portion, and the valve piston has an enlarged diameter portion at a lower end portion and an intermediate portion in the vertical direction. While the first seal material is provided, the second seal material is provided in the enlarged diameter portion in the middle in the vertical direction, and the second seal material slides on the tubular portion of the valve cap, A cam shaft and a lever shaft are provided in parallel at the upper portion along the left-right direction. The lever shaft is provided with a swingable lever. One end portion of the lever is an upper end portion of the valve piston. While being held in End is engaged with the pin groove of the side surface of the cam is a flow path control valve according to claim 1, wherein the vertically moving the one end according to the shape of the pin groove.

  According to the second aspect of the present invention, the valve housing hole is provided vertically so as to open upward of the valve housing, and the first opening and the second opening are provided in the peripheral side wall or the lower wall. A cam or the like for moving the valve piston can be arranged on the upper part of the valve housing. Further, since the second sealing material slides on the cylinder portion of the valve cap, the chamber is easily and reliably formed at the proximal end portion of the valve housing hole. Further, the valve piston is pulled up for opening the valve piston or pushed in for closing the valve, so that a spring for closing the valve is not necessary.

  According to a third aspect of the present invention, there is provided the valve housing connected to the pressure tank for storing the ion exchange resin bed and the regenerant tank for storing the regenerant of the ion exchange resin bed, wherein the set flow path is formed. A plurality of the valve housing holes are formed, and a plurality of valves are provided by attaching the valve piston and the valve cap to each of the valve housing holes, and a camshaft that operates each of the valves at an upper portion of the valve housing. Is provided along the left-right direction, and the plurality of valves are divided into a first valve group and a second valve group, with the camshaft as a boundary, and the first valve group includes a raw water inlet. A first water valve provided in the first water passage to the pressure tank, a second water valve provided in a second water passage from the pressure tank to the treated water outlet, the first water passage and the first water passage. Bye connecting the two waterways The regenerative valve provided in the regenerant passage through which the regenerant of the ion exchange resin bed is passed is arranged in either the first valve group or the second valve group. 3. The flow path control according to claim 1, wherein the second valve group includes the remaining valves that are not included in the first valve group side by side. It is a valve.

  According to the third aspect of the present invention, a plurality of valves are provided. The first valve group and the second valve group are divided by the camshaft as a boundary. A valve of a water flow system such as a double water flow valve and a bypass valve was disposed, a valve of a regeneration system other than this was disposed in the second valve group, and the regeneration valve was included in any of the valve groups. By separating the water flow system and the regeneration system, it is easy to take a flow path in each process. In addition, the water flow capacity can be increased by increasing the diameter of the water flow system.

  According to a fourth aspect of the present invention, the pressure tank includes an upper water inlet, a lower water outlet and a central water outlet, and the valve housing includes the regenerant tank in addition to the raw water inlet, the treated water outlet and the drain outlet. The valve housing is provided with an ejector for sucking the regenerant from the regenerant tank, and the flow path on the outlet side of the ejector is a first regeneration to the upper water flow port. A first regeneration valve that is branched into a first regeneration passage from the raw water inlet to the upper water passage, and the lower water passage. From the second water passage valve provided in the second water passage from the first water passage to the treated water outlet, the first water passage closer to the raw water inlet than the first water passage valve, and the second water passage valve Also connecting the second water passage on the treated water outlet side The bypass valve provided in the bypass passage, the backwash drainage valve provided in the backwash drainage channel from the upper water passage to the drainage port, and the washing drainage channel from the lower water passage to the drainage port. A cleaning drain valve, a regeneration drain valve provided in a regeneration drainage channel from the central water inlet to the drainage port, the regeneration valve provided in a regeneration agent channel from the regeneration agent port to the suction port of the ejector, And a distribution valve provided in two regeneration paths, wherein the first valve group includes the first water valve, the second water valve, and the bypass valve, and the second valve group includes the backwash drainage 4. The valve according to claim 3, further comprising: a valve, the washing drain valve, the regeneration drain valve, and the distribution valve, wherein the regeneration valve is included in either the first valve group or the second valve group. This is a flow path control valve.

  According to the invention described in claim 4, since the pressure tank includes the upper water inlet, the lower water outlet and the central water outlet, the regeneration agent is supplied from the upper water inlet and the lower water inlet, and the regeneration after the ion exchange is completed. Split-flow regeneration in which waste water is discharged from the central water outlet is possible. In addition, the first valve group is provided with a water flow system valve such as a first water flow valve, a second water flow valve and a bypass valve, and the second valve group is provided with a backwash drain valve, a wash drain valve, and a regeneration valve. A regeneration system valve, a drain valve and a distribution valve, was arranged, and the regeneration valve was included in either valve group. By separating the water flow system and the regeneration system, it is easy to take a flow path in each process. Moreover, even if a valve having a relatively large diameter is used as a water flow valve or a bypass valve, the entire flow path control valve can be accommodated. Thereby, the diameter of a water flow system can be enlarged and water flow capacity can be taken large.

  According to a fifth aspect of the present invention, as the arrangement of the valves in the first valve group and the second valve group, the bypass valve is arranged between the first water valve and the second water valve. The backwash drain valve and the flush drain valve are disposed adjacent to each other, the regeneration drain valve is disposed adjacent thereto, and the regeneration valve and the distribution valve are disposed adjacent to each other, 5. The flow path control according to claim 4, wherein the raw water inlet and the treated water outlet are provided on the first valve group side, and the drain port is provided on the second valve group side. It is a valve.

  According to the fifth aspect of the present invention, the bypass passage is disposed between the first water passage and the second water passage by disposing the bypass valve between the first water passage and the second water passage. Easy to take. Moreover, by providing the raw water inlet and the treated water outlet on the first valve group side, the water flow system can be completely integrated. Moreover, it is easy to take the flow path of the drainage system by collecting the backwash drain valve, the flush drain valve, and the regeneration drain valve. Moreover, the regeneration system can be completely integrated by providing the drain outlet on the second valve group side. Furthermore, it is easy to take the flow path of the regenerant by combining the regenerative valve and the distribution valve.

  Further, in the invention described in claim 6, the ejector includes an ejector body and a nozzle to the ejector body, and a water supply path to the nozzle is provided with a strainer and a constant flow valve, and is formed in the valve housing. 6. The ejector receiving hole, wherein the ejector body, the nozzle, the strainer, and the constant flow valve are incorporated, and the opening is sealed with a detachable lid. It is a flow-path control valve as described in above.

  According to the invention described in claim 6, since the ejector main body, the nozzle, the strainer and the constant flow valve are incorporated in the ejector receiving hole and the opening is sealed with the lid member, the assembly and maintenance of the regenerant introduction mechanism can be performed. Easy.

  According to the present invention, it is possible to realize a flow path control valve that can be easily assembled and maintained with a simple configuration. Moreover, in the flow path control valve provided with the several valve | bulb for ion exchange apparatuses, the flow path in each process is easy to take and it can also take the water flow capacity large.

It is the schematic which shows an example of the ion exchange apparatus provided with one Example of the flow-path control valve of this invention. It is the schematic which shows the operation process of the ion exchange apparatus of FIG. 1 in order, and shows the opening-and-closing state of each valve in each process. It is a schematic perspective view of the flow-path control valve of one Example of this invention. FIG. 4 is an exploded perspective view of the valves of the first valve group and the second valve group of the flow path control valve of FIG. 3, showing a state viewed from the rear of the valve housing. FIG. 4 is a schematic longitudinal sectional view of the flow path control valve of FIG. 3 in a left side view, showing a second water valve of the first valve group and a regenerative drain valve of the second valve group; Show. FIG. 4 is a schematic longitudinal sectional view of the flow path control valve of FIG. 3 as viewed from the left side, showing a second water valve of the first valve group and a regenerative drain valve of the second valve group. The process is shown. FIG. 4 is a schematic vertical cross-sectional view of the flow path control valve of FIG. 3 as viewed from the right side, showing a regeneration valve of the first valve group and a distribution valve of the second valve group, indicating a regeneration process. FIG. 4 is an exploded perspective view of the flow path control valve of FIG. 3 with some gears removed in addition to the ejector and its peripheral components. FIG. 4 is a component diagram of an ejector body of the flow path control valve of FIG. 3, showing a longitudinal sectional view and an XX sectional view thereof. It is a component figure of the nozzle of the flow-path control valve of FIG. 3, The longitudinal cross-sectional view and the right view are shown. It is a schematic sectional drawing which shows an example in which the plastic of the resin molded part and the rubber of the seal ring are intermolecularly bonded. It is a schematic sectional drawing which shows an example in which the plastic of the resin molded part and the rubber of the seal ring are intermolecularly bonded. It is a schematic sectional drawing which shows an example in which the plastic of the resin molded part and the rubber of the seal ring are intermolecularly bonded. It is a schematic sectional drawing which shows an example in which the plastic of the resin molded part and the rubber of the seal ring are intermolecularly bonded. It is a schematic sectional drawing which shows an example in which the plastic of the resin molded part and the rubber of the seal ring are intermolecularly bonded. It is a schematic sectional drawing which shows an example in which the plastic of the resin molded part and the rubber of the seal ring are intermolecularly bonded.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic view showing an example of an ion exchange device 2 including an embodiment of the flow path control valve 1 of the present invention. The ion exchange apparatus 2 of a present Example is a water softening apparatus which removes the hardness component in raw | natural water using a cation exchange resin. In this case, the regenerant for the ion exchange resin bed is salt water (sodium chloride aqueous solution).

  Hereinafter, first, the overall configuration and operation method of the ion exchange device 2 will be described in order, and then the specific configuration of the flow path control valve 1 of the present embodiment will be described.

<< Overall Configuration of Ion Exchanger 2 >>
The ion exchange device 2 includes a pressure tank 3 and a regenerant tank 4 in addition to the flow path control valve 1.

  The flow path control valve 1 is provided with a plurality of valves 6 to 13 in a valve housing 5 in which a set flow path is formed. The pressure tank 3 is a bottomed cylindrical hollow container and accommodates an ion exchange resin bed made of cation exchange resin beads. The regenerant tank 4 stores the regenerant of the ion exchange resin bed in the pressure tank 3.

  The flow path control valve 1 is attached to the upper part of the pressure tank 3. Thereby, the upper opening of the pressure tank 3 is closed by the valve housing 5 of the flow path control valve 1. At the lower part of the valve housing 5, end portions of the first water passage 14, the second water passage 15 and the regeneration drainage passage 16 are opened at positions corresponding to the upper opening of the pressure tank 3.

  The first water passage 14 opens to the upper water passage 17 in the pressure tank 3. The second water passage 15 opens to the lower water passage 19 in the pressure tank 3 through the inner pipe 18. The regeneration drainage channel 16 opens to the central water inlet 21 in the pressure tank 3 through the outer pipe 20.

  The inner pipe 18 and the outer pipe 20 are held at the upper ends by the valve housing 5, extend downward from the valve housing 5, and are inserted into the pressure tank 3. At this time, a double tube structure in which the inner tube 18 is inserted into the hollow hole of the outer tube 20 is formed. The inner pipe 18 extends to the lower part of the pressure tank 3, and the outer pipe 20 extends to the central part in the vertical direction of the pressure tank 3. A lower water inlet 19 is provided at the lower part of the inner pipe 18, and a central water outlet 21 is provided at the lower part of the outer pipe 20.

  In the valve housing 5 of the flow path control valve 1, a first water passage 14 for sending raw water from the raw water inlet 22 to the upper water inlet 17 and treated water (here, soft water) from the lower water inlet 19 are treated water outlet 23. And a second water passage 15 to be sent to. The first water passage 14 is provided with the first water passage valve 6, and the second water passage 15 is provided with the second water passage valve 7.

  The first water passage 14 closer to the raw water inlet 22 than the first water valve 6 and the second water passage 15 closer to the treated water outlet 23 than the second water valve 7 are connected by a bypass 24. A bypass valve 8 is provided in the bypass path 24.

  A backwash drain 26 to the drain 25 is also connected to the upper water inlet 17, and a backwash drain valve 9 is provided in the backwash drain 26. In FIG. 1, the first water passage 14 and the backwash drainage 26 are shown as common pipes on the pressure tank 3 side.

  A cleaning drainage channel 27 to the drainage port 25 is also connected to the lower water inlet 19, and the cleaning drainage valve 10 is provided in the cleaning drainage channel 27. In FIG. 1, the second water passage 15 and the washing drainage passage 27 are shown as a common conduit on the pressure tank 3 side. The downstream of the backwash drain 26 and the wash drain 27 opens to the drain 25 via a constant flow valve (rubber orifice) 28.

  A regeneration drainage channel 16 to the drainage port 25 is connected to the central water outlet 21, and the regeneration drainage valve 11 is provided in the regeneration drainage channel 16. The downstream of the backwash drain 26, the wash drain 27, and the regeneration drain 16 is collected and opened to the drain 25.

  The valve housing 5 is further provided with a drive water passage 31 for sending drive water (raw water) from the drive water inlet 29 to the ejector 30. In the drive water channel 31, a strainer 32, a constant flow valve (rubber orifice) 33, and an ejector 30 are provided in order from the drive water inlet 29. In addition, the raw water to the raw water inlet 22 and the driving water to the driving water inlet 29 can branch and use the water from the same water supply source. Alternatively, the raw water inlet 22 and the driving water inlet 29 may be unified and branched into the first water passage 14 and the driving water passage 31 in the valve housing 5.

  Although details will be described later (FIGS. 8 to 10), the ejector 30 includes an ejector body 34 and a nozzle 35, and the ejector body 34 includes a throat portion 36 and a diffuser portion 37. By ejecting the driving water from the nozzle 35 toward the tip of the ejector body 34, the regenerant is sucked from the suction port 38 of the ejector body 34, mixed with the driving water, and discharged. That is, the drive water from the drive water passage 31 is supplied to the nozzle 35, and the regenerant from the regenerant passage 39 is supplied to the 34 suction port 38 of the ejector body. The regenerant path 39 connects the regenerant port 40 of the valve housing 5 and the suction port 38 of the ejector body 34, and the regenerative valve 12 is provided. A regenerant tank 4 is connected to the regenerant port 40 of the valve housing 5 via a regenerant pipe 41, and a regenerant flow meter 42 is provided in the regenerant pipe 41.

  A first regeneration path 43 and a second regeneration path 44 that are bifurcated are provided on the exit side of the ejector body 34. The first regeneration path 43 is connected to the upper water inlet 17 through the first orifice 45. The second regeneration path 44 is connected to the lower water inlet 19 through the second orifice 46 and the distribution valve 13. In FIG. 1, the first water flow path 14, the backwash drainage path 26, and the first regeneration path 43 are shown as common pipe lines on the pressure tank 3 side. Further, the second water passage 15, the washing drainage passage 27 and the second regeneration passage 44 are shown as common pipes on the pressure tank 3 side.

<< Operation Method of Ion Exchanger 2 >>
FIG. 2 is a schematic view showing the operation steps of the ion exchange device 2 of the present embodiment in order and the open / close states of the valves 6 to 13 in each step. In this figure, as for each valve 6-13, the shaded part has shown the open state, and the plain part has shown the closed state. During the transition of each process, the valves 6 to 13 may be gradually closed or gradually opened.

  The ion exchange device 2 can be used alone or in two units. In the latter case, a raw water supply path from the water supply source is connected to the raw water inlet 22 of the first ion exchange apparatus 2, and a treated water supply path to the treated water use facility is connected to the treated water outlet 23 of the second ion exchange apparatus 2. And the treated water outlet 23 of the first ion exchange device 2 and the raw water inlet 22 of the second ion exchange device 2 may be connected by a bypass supply path. In this case, while the raw water is being treated by one ion exchange device 2, the ion exchange resin bed can be regenerated by the other ion exchange device 2.

  The ion exchange device 2 sequentially executes a water flow process, a regeneration standby process, a backwash process, a regeneration process, an extrusion process, a cleaning process, a water replenishment process, and a water flow standby process. These steps are performed by controlling the opening and closing of the valves 6 to 13 as shown in FIG.

  In the water flow process, raw water is supplied from the raw water inlet 22 to the upper water inlet 17 of the pressure tank 3 through the first water passage 14. The water passes through the ion exchange resin bed from the upper part to the lower part of the pressure tank 3 to become treated water (here, soft water). The treated water is led out from the lower water inlet 19 of the pressure tank 3 to the treated water outlet 23 via the inner pipe 18 and the second water passage 15.

  The regeneration standby process is a standby process to the backwash process, and the water flow standby process is a standby process to the water flow process. In each process after the regeneration standby process, the raw water is sent to the second ion exchange device 2 via the bypass path 24.

  In the backwashing process, the raw water is supplied from the raw water inlet 22 to the lower water inlet 19 of the pressure tank 3 through the bypass passage 24, the second water passage 15 and the inner pipe 18. The water is passed from the lower part to the upper part of the pressure tank 3 while developing the ion exchange resin bed. The drainage is led out to the drainage port 25 from the upper water flow port 17 of the pressure tank 3 through the backwash drainage channel 26.

  In the regeneration process, driving water (raw water) is supplied from the driving water inlet 29 to the ejector 30 via the driving water channel 31. When water is ejected from the nozzle 35 in the ejector 30, the regenerant in the regenerant tank 4 is sucked into the suction port 38 of the ejector 30 via the regenerant pipe 41 and the regenerant path 39, Mix and discharge. The regenerant is supplied to the upper water inlet 17 of the pressure tank 3 through the first regeneration path 43 and to the lower water outlet 19 of the pressure tank 3 through the second regeneration path 44 and the inner pipe 18. The The regenerant from the upper water inlet 17 and the lower water inlet 19 of the pressure tank 3 circulates toward the center in the vertical direction of the pressure tank 3 to regenerate the ion exchange resin bed. The drainage is led out from the central water inlet 21 of the pressure tank 3 to the drain 25 via the outer pipe 20 and the regeneration drainage channel 16. According to such split flow regeneration, it is possible to stably regenerate the ion exchange resin bed while maintaining high regeneration efficiency.

  The extrusion process is different from the regeneration process in that the supply of the regenerant to the suction port 38 of the ejector 30 is stopped, but is otherwise the same as the regeneration process. The regenerant remaining in the pressure tank 3 after the regeneration process is discharged by the extrusion process.

  In the washing step, raw water is supplied from the raw water inlet 22 through the first water passage 14 to the upper water inlet 17 of the pressure tank 3. The water is passed through the ion exchange resin bed from the upper part to the lower part of the pressure tank 3 to rinse the ion exchange resin bed. The drainage is led out from the lower water inlet 19 of the pressure tank 3 to the water outlet 25 through the inner pipe 18 and the cleaning drainage channel 27.

  In the water replenishment process, raw water is supplied from the drive water inlet 29 to the ejector 30 via the drive water channel 31. The water is supplied from the suction port 38 of the ejector 30 to the regenerant tank 4 through the regenerant path 39 and the regenerant pipe 41. In this way, water can be supplied to the regenerant tank 4 in preparation for the next regeneration step.

<< Specific Configuration of Flow Control Valve 1 >>
Hereinafter, a specific configuration of the flow path control valve 1 of the present embodiment will be described.

  FIG. 3 is a schematic perspective view of the flow path control valve 1 of the present embodiment. The flow path control valve 1 includes the valve 6 to 13 and the ejector 30 in the valve housing 5 in which the flow paths 14, 15, 16, 24, 26, 27, 31, 39, 43, and 44 are formed. It is provided. That is, in the valve housing 5, each flow path 14, 15, 16, 24, 26, 27, 31, 39, 43, 44 is formed so as to form the circuit shown in FIG. Valves 6 to 13 and an ejector 30 are provided.

  Each valve 6 to 13 is opened and closed by a cam 47, and a camshaft 48 that rotates the cam 47 is provided in the left-right direction at the center in the front-rear direction of the upper portion of the valve housing 5. The valves 6 to 13 are divided into a first valve group 49 and a second valve group 50 in the front-rear direction with the camshaft 48 as a boundary. At this time, the regeneration valve 12 may be included in either the first valve group 49 or the second valve group 50, but is included in the first valve group 49 in the present embodiment.

  The first valve group 49 includes a first water valve 6, a second water valve 7, a bypass valve 8, and a regeneration valve 12. At this time, the bypass valve 8 is preferably arranged between the first water valve 6 and the second water valve 7. In FIG. 3, the first valve group 49 is disposed in front of the valve housing 5, and the second water valve 7, the bypass valve 8, the first water valve 6, and the regeneration valve 12 are arranged side by side in order from the left. Has been.

  The second valve group 50 includes a backwash drain valve 9, a wash drain valve 10, a regeneration drain valve 11, and a distribution valve 13. At this time, it is preferable that the backwash drain valve 9 and the flush drain valve 10 are disposed adjacent to each other, and the regeneration drain valve 11 is disposed adjacent thereto. In FIG. 3, in the second valve group 50, the regeneration drain valve 11, the backwash drain valve 9, the wash drain valve 10, and the distribution valve 13 are arranged side by side in order from the left. In addition, the regeneration valve 12 of the first valve group 49 and the distribution valve 13 of the second valve group 50 are arranged facing each other in the front-rear direction.

  As described above, the valve housing 5 is provided with the raw water inlet 22, the treated water outlet 23, the drainage port 25, the driving water inlet 29, and the regenerant port 40 as fluid inlets and outlets.

  The raw water inlet 22 and the treated water outlet 23 are preferably provided on the first valve group 49 side. In the present embodiment, the raw water inlet 22 is provided in the middle between the first water flow valve 6 and the bypass valve 8 so as to open forward, and the treated water outlet 23 is formed of the second water flow valve 7 and the bypass valve 8. Is provided in the middle part with an opening forward. More specifically, an end portion of the first water passage 14 is provided to extend forward in an intermediate portion between the first water passage valve 6 and the bypass valve 8 of the valve housing 5, and a front end opening thereof is provided. The raw water inlet 22 is used. Further, an end portion of the second water passage 15 is provided at an intermediate portion between the second water passage valve 7 and the bypass valve 8 of the valve housing 5, and a front end opening thereof is treated water outlet 23. It is said.

  The drain port 25 is preferably provided on the second valve group 50 side. In the present embodiment, the drain port 25 is provided on the side portion of the regeneration drain valve 11 (FIG. 4). More specifically, a pipe that collects the ends of the regeneration drainage channel 16, the backwash drainage channel 26, and the cleaning drainage channel 27 extends from the side of the regeneration drainage valve 11, and its end opening is The drain port 25 is used.

  The driving water inlet 29 is preferably provided close to the ejector 30. In the present embodiment, in FIG. 3, the ejector 30 is housed in the lower right portion of the central portion of the valve housing 5 in the front-rear direction, and the drive water inlet 29 is provided on the right side surface thereof. More specifically, the pipe constituting the end portion of the drive water channel 31 is provided on the side portion of the ejector accommodating portion 51 so as to extend to the right side and then extend downward, and the end opening is driven. The water inlet 29 is used.

  The regenerant port 40 is preferably provided close to the regenerative valve 12. In the present embodiment, the regenerant port 40 is provided at the front portion of the regeneration valve 12. More specifically, a regeneration agent port 40 is provided at the front portion of the regeneration valve 12, and a regeneration agent flow meter 42 is provided at the regeneration agent port 40 (FIG. 7).

  FIG. 4 is an exploded perspective view of the valves 6 to 13 of the first valve group 49 and the second valve group 50 and shows a state viewed from the rear of the valve housing 5. Here, the second water valve 7 in the first valve group 49 is shown disassembled, but the same applies to the first water valve 6 and the bypass valve 8. Moreover, although the regeneration drainage valve 11 is disassembled and shown in the second valve group 50, the same applies to the backwashing drainage valve 9, the cleaning drainage valve 10, and the distribution valve 13. The same applies to the regenerative valve 12. That is, in this embodiment, the regeneration valve 12 is included in the first valve group 49, but the configuration is the same as that of each valve 9, 10, 11, 13 of the second valve group 50.

  5 and 6 are schematic longitudinal sectional views of the flow path control valve 1 of the present embodiment as viewed from the left side, and the second water flow valve 7 of the first valve group 49 and the regenerated drainage of the second valve group 50. A valve 11 is shown. FIG. 5 shows a water flow process, in which the second water valve 7 is in an open state and the regeneration drain valve 11 is in a closed state. FIG. 6 shows a regeneration process and an extrusion process, in which the second water valve 7 is closed and the regeneration drain valve 11 is open.

  FIG. 7 is a schematic longitudinal sectional view of the flow path control valve 1 of the present embodiment as viewed from the right side, showing the regeneration valve 12 of the first valve group 49 and the distribution valve 13 of the second valve group 50. Yes. Here, the regeneration process is shown, in which the regeneration valve 12 is open and the distribution valve 13 is also open. In FIG. 7, the shape of the cam 47 and its pin groove 130 is shown in a simplified manner and is different from the actual one.

  Each of the valves 6 to 13 of the first valve group 49 and the second valve group 50 is provided with a valve piston 53 (53A) in a valve housing hole 52 (52A) formed in the valve housing 5 so that the valve piston 53 (53A) can advance and retreat. The valve housing hole 52 (52A) is provided vertically so as to open upward of the valve housing 5.

  Of the valves constituting the first valve group 49, the valves (the first water valve 6, the second water valve 7 and the bypass valve 8) excluding the regeneration valve 12 have the same configuration. Specifically, it demonstrates below based on FIGS. The valve housing hole 52 opens to the upper side of the valve housing 5 as described above, and the side of the opening (that is, the upper side) may be referred to as the base end side, and the opposite side (ie, the lower side) may be referred to as the front end side. .

  The valve accommodating hole 52 is formed as a stepped hole, and a large-diameter hole 115 is disposed above and a small-diameter hole 116 is disposed below. The upper part in the small diameter hole 116 of the valve accommodating hole 52 functions as the valve seat portion 67. However, a stepped portion of the valve accommodating hole 52 may be used as the valve seat portion 67 depending on circumstances.

  A plurality of ribs 117 are provided at equal intervals in the circumferential direction below the large-diameter hole 115 of the valve housing hole 52, and each rib 117 protrudes radially inward from the peripheral side wall of the large-diameter hole 115. It is formed along the axial direction of the diameter hole 115. Thereby, the lower end portion of the valve piston 53 is guided by the leading end portion of each rib 117 protruding inward in the radial direction, and can be moved along the axis of the valve accommodating hole 52.

  The valve housing hole 52 is formed with a first opening 56 and a second opening 57 serving as a fluid inlet / outlet for the valve housing hole 52 at positions separated from each other in the axial direction. The first opening 56 is provided below (the peripheral side wall or the lower wall) of the small diameter hole 116, and the second opening 57 is provided on the peripheral side wall of the large diameter hole 115.

  Referring to FIG. 1, the first water valve 6 has a first opening 56 that communicates with the upper water inlet 17 and a second opening 57 that communicates with the raw water inlet 22. In the second water flow valve 7, the first opening 56 communicates with the lower water flow port 19, and the second opening 57 communicates with the treated water outlet 23. In the bypass valve 8, the first opening 56 communicates with the treated water outlet 23, and the second opening 57 communicates with the raw water inlet 22.

  A valve piston 53 is provided in the valve housing hole 52 so as to be able to advance and retract. The valve piston 53 has a stepped columnar shape, and includes a lower large-diameter portion 118 and an upper small-diameter portion 119. Both end portions in the axial direction of the large-diameter portion 118 are further enlarged-diameter portions 120 and 121, and an annular groove is formed on the outer peripheral portion thereof. A first sealing material 77 is provided in the lower annular groove, and a second sealing material 78 is provided in the upper annular groove. Each of the sealing materials 77 and 78 is, for example, an annular X ring having an X-shaped cross section.

  A first seal member 77 is attached to the diameter-enlarged portion 121 below the valve piston 53, and is moved up and down by being guided by the ribs 117 below the large-diameter hole 115 of the valve accommodation hole 52, and the small-diameter hole 116. It is possible to fit in the upper part. On the other hand, the enlarged diameter portion 120 above the valve piston 53 is fitted with the second seal material 78 and slides on the cylindrical portion 85 of the valve cap 83.

  A screw hole 122 is formed in the upper end surface of the small diameter portion 119 of the valve piston 53 so as to open only upward. As will be described later, a piston hook 123 can be attached to the screw hole 122. On the other hand, a communication hole 76 is formed in the large diameter portion 118 of the valve piston 53 so as to penetrate vertically. The communication hole 76 opens to the lower end surface of the large diameter portion 118 and opens at a plurality of locations in the circumferential direction on the stepped surface of the large diameter portion 118 and the small diameter portion 119.

  A valve piston 53 is incorporated in the valve housing hole 52 and the opening is sealed with a valve cap 83. The valve cap 83 includes a substantially rectangular upper plate 124, and a cylindrical tube portion 85 is integrally formed on the lower surface thereof so as to extend downward. The valve cap 83 is attached by fitting the cylindrical portion 85 into the upper opening of the valve accommodating hole 52 (the upper portion of the large-diameter hole 115). At that time, the lower surface of the upper plate 124 of the valve cap 83 is brought into contact with the upper surface of the peripheral side wall of the valve accommodating hole 52. Further, by screwing the screw 125 into the valve housing 5 through the upper plate 124, both are integrated. At this time, the gap between the valve housing 5 and the valve cap 83 is sealed by the O-ring 88. In this way, the valve cap 83 is detachably attached to the upper end portion of the valve accommodation hole 52.

  A small diameter portion 119 of the valve piston 53 is passed through the valve cap 83 in a watertight state. That is, the upper plate 124 of the valve cap 83 has a through hole at the center, and the small diameter portion 119 of the valve piston 53 is passed through the through hole. A gap between the valve piston 53 and the valve cap 83 is sealed by the O-ring 126 held by the valve cap 83. The O-ring 126 is mounted from below the valve cap 83 and is held by a seal retainer 127 attached to the lower surface of the upper plate 124 of the valve cap 83.

  As described above, the small diameter portion 119 of the valve piston 53 is opened upward to be formed with a screw hole 122, and a piston hook 123 is attached to the screw hole 122. The valve piston 53 can be moved up and down by the lever 128 via the piston hook 123.

  Specifically, a lever shaft 129 is provided in the upper part of the valve housing 5 in front of and behind the cam shaft 48 in parallel with the cam shaft 48, and a plurality of levers 128 swing on each lever shaft 129. It is provided as possible. One end of each lever 128 is swingably held by the piston hook 123 at the upper end of the valve piston 53, and the pin at the other end is engaged with the pin groove 130 on the side surface of the cam 47. Accordingly, the valve piston 53 can be moved up and down by the lever 128 moving around the lever shaft 129 in accordance with the shape of the pin groove 130 on the side surface of the cam 47.

  As shown in FIG. 3, in this embodiment, four cams 47 are arranged, and levers 128 for operating the valves of the first valve group 49 are engaged with one end face thereof, and the other end face is provided with the other end face. Lever 128 that operates each valve of the second valve group 50 is engaged.

  As shown on the right side of FIG. 6, in a state where the valve piston 53 is pushed downward and the enlarged diameter portion 121 (first seal material 77) below the valve piston 53 is fitted into the small diameter hole 116 of the valve accommodation hole 52, Communication between the first opening 56 and the second opening 57 is blocked. On the contrary, as shown on the right side of FIG. 5, in the state where the valve piston 53 is pulled upward and the enlarged diameter portion 121 below the valve piston 53 is pulled out from the small diameter hole 116 of the valve accommodation hole 52, the first opening 56. Communication with the second opening 57 is ensured.

  The enlarged diameter portion 120 (second seal material 78) above the valve piston 53 is fitted into the cylinder portion 85 of the valve cap 83 and slides inside the cylinder portion 85. A chamber 94 is formed between the valve piston 53 and the cylindrical portion 85 of the valve cap 83 (FIG. 6). The chamber 94 communicates with the first opening 56 side through a communication hole 76 (FIG. 4) of the valve piston 53. Accordingly, in the valve closed state, the chamber 94 communicates with the first opening 56 on the distal end side through the communication hole 76 of the valve piston 53, and part of the fluid pressure in the valve opening direction and the valve closing direction applied to the valve piston 53. Or balance everything. Thereby, even when the 1st opening 56 is used as a fluid inlet side (high pressure side), the driving force required for opening and closing can be reduced.

  In addition to the valves constituting the second valve group 50 (regeneration drain valve 11, backwash drain valve 9, wash drain valve 10 and distribution valve 13), the regeneration valve 12 of the first valve group 49 includes the first valve group 49. Although it is smaller than each valve (the 1st water flow valve 6, the 2nd water flow valve 7, and the bypass valve 8) other than the regeneration valve 12 which comprises this, it is the structure similar to these each valves 6-8. . Therefore, the following description will be focused on the different points, and corresponding portions will be described with the same reference numerals. However, the latter so that the configuration of each valve of the first valve group 49 excluding the regeneration valve 12 and the configuration of each valve of the second valve group 50 (and the regeneration valve 12 of the first valve group 49) can be distinguished for the time being. The subscript “A” is attached to the configuration of For example, the valve piston of the first valve group 49 is shown as “valve piston 53”, while the valve piston of the second valve group 50 is shown as “valve piston 53A”.

  Referring to FIG. 1, the regeneration valve 12 has a first opening 56 </ b> A communicating with the suction port 38 of the ejector 30 and a second opening 57 </ b> A communicating with the regenerant port 40. In the distribution valve 13, the first opening 56 </ b> A communicates with the outlet of the ejector 30, and the second opening 57 </ b> A communicates with the lower water inlet 19. The regeneration drain valve 11 has a first opening 56 </ b> A communicating with the central water inlet 21 and a second opening 57 </ b> A communicating with the drain outlet 25. In the backwash drain valve 9, the first opening 56 </ b> A communicates with the upper water inlet 17, and the second opening 57 </ b> A communicates with the drain outlet 25. The cleaning drain valve 10 has a first opening 56 </ b> A communicating with the lower water inlet 19 and a second opening 57 </ b> A communicating with the drain 25.

  As shown in FIG. 4, in each of the valves 6 to 8 of the first valve group 49 excluding the regeneration valve 12, the communication hole 76 of the valve piston 53 opens to the lower end surface and the stepped surface of the large diameter portion 118. Although formed, in each valve 9, 10, 11, 13 of the second valve group 50 and the regenerative valve 12 of the first valve group 49, the communication hole 76A of the valve piston 53A has a lower diameter and a small diameter of the large diameter portion 118A. An opening is formed in the peripheral side surface of the portion 119A. That is, openings are formed at a plurality of locations in the circumferential direction at the lower portion of the peripheral side wall of the small diameter portion 119A, and each opening is an upper opening of the communication hole 76A. The communication hole 76A also opens to the lower end surface of the valve piston 53A. Further, in each of the valves 9, 10, 11, 13 of the second valve group 50 and the regeneration valve 12 of the first valve group 49, the large diameter portion 118A and the small diameter portion 119A of the valve piston 53A have substantially the same diameter. The

  In addition, in the design of the valve cap 83 (83A) and the valve piston 53 (53A), the valves 6 to 13 of the first valve group 49 and the second valve group 50 are slightly different, but there is no fundamental difference. Description is omitted.

  FIG. 8 is an exploded perspective view of the ejector 30 and its peripheral components with some gears 131 removed. FIG. 9 is a component diagram of the ejector main body 34, and shows a longitudinal sectional view and an XX sectional view thereof. Further, FIG. 10 is a component diagram of the nozzle 35, and shows a longitudinal sectional view and a right side view thereof.

  The ejector accommodating portion 51 is provided between the regeneration valve 12 and the distributing valve 13, in other words, in the lower right portion of the central portion in the front-rear direction of the valve housing 5 in FIG. 3 or FIG. As shown, an ejector receiving hole 95 is formed to open to the right side of the valve housing 5, and the ejector main body 34, the nozzle 35, the constant flow valve 33, the strainer 32, and the like are incorporated in the ejector receiving hole 95, The opening is sealed with a lid material 98.

  In the present embodiment, the ejector accommodation hole 95 includes an ejector body accommodation hole 95a and a strainer accommodation hole 95b. The ejector body accommodation hole 95a and the strainer accommodation hole 95b are arranged in parallel adjacent to each other in the front-rear direction, and are provided from the right side portion of the valve housing 5 toward the left side. In addition, the front-end | tip part of the strainer accommodation hole 95b is obstruct | occluded. Further, the ejector main body accommodation hole 95a and the strainer accommodation hole 95b communicate with each other only at the base end (on the side of the opening that is opened and closed by the lid member 98).

  The ejector body 34, the nozzle 35, and the constant flow valve 33 are sequentially incorporated in the ejector body housing hole 95a. In addition, a distribution plate 132 is also disposed on the distal end side of the ejector body 34. The distribution plate 132 is a component for evenly distributing the regenerant from the ejector 30 to the first regeneration path 43 and the second regeneration path 44.

  On the other hand, the strainer 32 is incorporated into the strainer receiving hole 95b via the O-ring 133. The ejector body accommodation hole 95a and the strainer accommodation hole 95b are sealed at the opening by a common cover material 98. At this time, the screw member 134 is screwed into the valve housing 5 via the cover member 98, so that the cover member 98 is detachably provided on the valve housing 5. Further, a gap between the ejector body 34 and the ejector body accommodation hole 95 a of the valve housing 5 is sealed with an O-ring 105. Similarly, the gap between the ejector body 34 and the nozzle 35 and the gap between these and the ejector body housing hole 95a are sealed with the O-ring 106. Further, the gap between the valve housing 5 and the lid member 98 is also sealed with an O-ring 107.

  As shown in FIG. 9, the ejector body 34 has a substantially cylindrical shape, and the hollow hole has a cylindrical portion 135 that opens to the proximal end side, and a tapered portion 136 that is tapered at the distal end portion of the cylindrical portion 135. The throat portion 36 formed in the central portion of the taper portion 136 along the axial direction, and the diffuser portion 37 having a diameter increasing toward the distal end side at the distal end portion of the throat portion 36 are provided. The cylindrical portion 135 has a suction port 38 formed on the peripheral side wall thereof.

  As shown in FIG. 10, the nozzle 35 is formed in a stepped cylindrical shape, and a large diameter portion 137, a small diameter portion 138, and a truncated cone portion 139 are formed in order from the proximal end side to the distal end side. The inner hole of the nozzle 35 is also formed with a reduced diameter in order toward the distal end side, and a nozzle hole 140 is formed at the distal end portion.

  Leg portions 141 are formed at the base end portion of the large-diameter portion 137 of the nozzle 35 so as to extend toward the base end side at equal intervals in the circumferential direction. The leg portion 141 positions the ejector 30 (the ejector body 34 and the nozzle 35) in the ejector body housing hole 95a, and secures an inflow space for driving water from the strainer 32 at the proximal end of the ejector body housing hole 95a. .

  A constant flow valve 33 is fitted in the large diameter portion 137 of the nozzle 35. The constant flow valve 33 is a rubber orifice in which a through hole is formed at the center of the disk. On the other hand, the strainer 32 is cylindrical and the peripheral side wall is formed in a net shape.

  A drive water inlet pipe 142 is provided in the lid member 98 of the ejector accommodating portion 51, and the drive water is supplied to the inside of the strainer 32. The water passes from the inside of the strainer 32 to the outside, proceeds from the proximal end portion of the ejector main body accommodation hole 95 a to the distal end side, and is ejected from the nozzle 35. Along with this, the regenerative agent is drawn into the suction port 38 from the regenerant port 40, and the mixed water of the regenerant and driving water is discharged from the ejector 30.

  As described above, the valves 6 to 13 of the first valve group 49 and the second valve group 50 are opened and closed by the cam 47 via the lever 128. That is, the cam 47 is provided with the cam 47 corresponding to each of the valves 6 to 13, and the pin groove 130 is formed on the side surface of the cam 47. On the other hand, the lever 128 is held at one end by the piston hook 123 (123A) at the upper end of the valve piston 53 (53A), while the pin at the other end engages with the pin groove 130 on the side surface of the cam 47. Yes. Therefore, in this embodiment, the valve piston 53 (53A) can be directly moved up and down by the lever 128 without using a spring.

  When the lever 128 pushes the valve piston 53 (53A) downward along with the rotation of the camshaft 48, the lower end of the valve piston 53 (53A) is fitted into the small diameter hole 116 (116A), and the valve is closed. Conversely, if the lever 128 pulls the valve piston 53 (53A) upward along with the rotation of the camshaft 48, the lower end of the valve piston 53 (53A) is removed from the small diameter hole 116 (116A), and the valve is opened. It becomes.

  By changing the shape of the pin groove 130 corresponding to each of the valves 6 to 13, the open / closed state as shown in FIG. 2 can be controlled. The cam 47 is rotated by rotating the cam shaft 48 with a motor. Specifically, when the motor is rotated, the rotational force is transmitted to the camshaft 48 via the reduction gear train 109, and the cam 47 can be rotated. The cam 47 is intermittently rotated for each process.

  As shown in FIG. 3, two sensor plates 143 and 144 are provided on the camshaft 48. The first sensor plate 143 is formed with a notch 113 for detecting the origin at one place in the circumferential direction, and the second sensor plate 144 is formed with a notch 114 for process detection corresponding to each process position. Has been. The notches 113 and 114 of the sensor plates 143 and 144 can be read by a photo sensor (not shown) such as a photo interrupter. Therefore, the origin position and the current position of the cam 47 (in other words, which process is being executed) can be confirmed by the sensor. Further, a process instruction plate 145 is provided at the end of the camshaft 48 so that such a process position can be visually confirmed.

  According to the present embodiment, in the first valve group 49, in addition to the regeneration valve 12, valves of a water flow system such as the first water flow valve 6, the second water flow valve 7, and the bypass valve 8 are arranged. In the valve group 50, regeneration valves such as a regeneration drain valve 11, a backwash drain valve 9, a wash drain valve 10, and a distribution valve 13 are arranged. By separating the water flow system and the regeneration system, it is easy to take a flow path in each process. Even if a relatively large diameter valve is used as the water flow valves 6, 7 and the bypass valve 8, the entire flow path control valve 1 can be accommodated. Thereby, the diameter of a water flow system can be enlarged and water flow capacity can be taken large.

  In addition, by arranging the bypass valve 8 between the first water passage valve 6 and the second water passage valve 7, it is easy to take the bypass passage 24 between the first water passage 14 and the second water passage 15. Moreover, by providing the raw water inlet 22 and the treated water outlet 23 on the first valve group 49 side, the water flow system can be completely integrated.

  On the other hand, by collecting the backwash drain valve 9, the wash drain valve 10, and the regeneration drain valve 11, it is easy to take a flow path of the drainage system. In addition, by providing the drain port 25 on the second valve group 50 side, the regeneration system can be completely integrated. Further, by combining the regeneration valve 12 and the distribution valve 13, it is easy to take a flow path for the regenerant.

  Further, in the closed state, each of the valves 6 to 13 has a chamber 94 (94A) formed at the proximal end portion of the valve housing hole 52 (52A), and the chamber 94 (94A) communicates with the valve piston 53 (53A). It communicates with the first opening 56 (56A) on the distal end side through the hole 76 (76A). Thereby, a part or all of the fluid pressure in the valve opening direction and the valve closing direction applied to the valve piston 53 (53A) can be balanced.

  Further, since the valve piston 53 (53A) is incorporated into the valve accommodating hole 52 (52A) and the opening is sealed with the valve cap 83 (83A), assembly and maintenance are easy.

  Further, since the ejector main body 34, the nozzle 35, the constant flow valve 33 and the strainer 32 are incorporated into the ejector receiving hole 95 and the opening is sealed with the lid member 98, assembly and maintenance are easy.

  In the embodiment, the valve housing 5, the valve frame 58 (58A), the valve piston 53 (53A), the valve cap 83 (83A), and the like of the flow path control valve 1 are resin molded parts. In these parts, a seal ring such as an O-ring or an X-ring is attached, and there is a portion that seals a gap with another member. For example, the valve piston 53 (53A) is fitted with a first seal material 77 (77A) or a second seal material 78 (78A) to seal the gap between the valve seat portion 67 and the cylinder portion 85.

  Conventionally, in a fluid seal structure using a resin molded part, an annular groove is formed in the resin molded part, and a seal ring is fitted therein. However, in this method, it is a condition that the seal ring is sandwiched between the two sliding members. Otherwise, the seal ring may be detached from the annular groove due to the negative pressure due to the flow velocity of the fluid. is there. In order to prevent this, the seal ring has to be hooked in the annular groove by forming a large inner diameter side attached to the resin molded part.

  On the other hand, the plastic of the resin molded part 146 and the rubber of the seal ring 147 may be intermolecularly bonded. Specifically, for example, in various shapes shown in FIGS. 11 to 16, the resin molded component 146 is set in a rubber molding die, and the resin and rubber are joined using a rubber vulcanization reaction, thereby sealing ring 147 is formed. In this method, the rubber and the resin have almost no interface with each other, and therefore, there is no need to devise a method for preventing the resin-side molding groove or the like from falling off. Such a joining method can be applied to each seal portion of the embodiment.

  The flow path control valve 1 of the present invention is not limited to the configuration of the above embodiment, and can be changed as appropriate. In particular, in the above embodiment, the flow path control valve 1 of the ion exchange apparatus 2 has been described. However, the flow path control valve 1 of the present invention is not limited to the ion exchange apparatus 2 and is widely used for opening / closing and switching various flow paths. be able to. Accordingly, in the above-described embodiment, an example in which a plurality of valves 6 to 13 are installed in the valve housing 5 is shown. However, the number of valves installed in the valve housing 5 can be changed as appropriate, and may be singular in some cases. . That is, the flow path control valve 1 of the present invention may include at least one valve shown on one side of FIG.

  Further, even when the flow path control valve 1 is used for the ion exchange device 2, in the above embodiment, the ion exchange device 2 is a water softening device that removes hardness components in raw water using a cation exchange resin. The ion exchange device 2 is not limited to a water softening device, and may be a nitrate nitrogen removal device using an anion exchange resin, for example. Moreover, the ion exchange apparatus 2 may be a pure water production apparatus such as a two-bed two-column type or a mixed bed type using a cation exchange resin and an inion exchange resin.

  Moreover, in the said Example, although the flow-path control valve 1 was provided with eight valves, according to the structure of the ion exchange apparatus 2, the number of valves can be changed. Even in that case, the first valve group 49 includes the first water valve 6, the second water valve 7, and the bypass valve 8, and the regeneration valve 12 is the first valve group 49 or the second valve group 50. It is preferable that the second valve group 50 is included in any of the remaining valves not included in the first valve group 49. Furthermore, in the said Example, although the regeneration valve 12 and the distribution valve 13 were arrange | positioned facing, you may arrange | position adjacent to right and left depending on the case.

DESCRIPTION OF SYMBOLS 1 Flow path control valve 2 Ion exchange apparatus 3 Pressure tank 4 Regeneration agent tank 5 Valve housing 6 First water valve 7 Second water valve 8 Bypass valve 9 Backwash drain valve 10 Wash drain valve 11 Regeneration drain valve 12 Regeneration valve DESCRIPTION OF SYMBOLS 13 Distribution valve 14 1st water flow path 15 2nd water flow path 16 Regeneration drainage path 17 Upper water flow opening 18 Inner pipe 19 Lower water flow opening 20 Outer pipe 21 Central water flow inlet 22 Raw water inlet 23 Treated water outlet 24 Bypass path 25 Drain outlet 26 Backwash Drainage path 27 Washing drainage path 28 Constant flow valve 29 Drive water inlet 30 Ejector 31 Drive water path 32 Strainer 33 Constant flow valve 34 Ejector body 35 Nozzle 36 Throat section 37 Diffuser section 38 Suction port 39 Regenerant path 40 Regenerant port 41 Regenerant Piping 42 Regenerant flow meter 43 First regeneration path 44 Second regeneration path 45 First orifice 46 Second orifice 47 Cam 48 Camshaft 49 First valve group 50 Second valve group 51 Ejector housing part 52 Valve housing hole 53 Valve piston 56 First opening 57 Second opening 67 Valve seat part 76 Communication hole 77 First seal material 78 Second Seal material 83 Valve cap 85 Tube portion 94 Chamber 95 Ejector receiving hole 98 Lid material 109 Reduction gear train 115 Large diameter hole (of valve receiving hole) 116 Small diameter hole (of valve receiving hole) 128 Lever 129 Lever shaft 130 Pin groove

Claims (6)

  1. A valve housing hole is formed, and in the valve housing hole, a first opening and a second opening serving as a fluid inlet / outlet with respect to the valve housing hole are formed at positions separated from each other in the axial direction, and the valve is interposed therebetween. A valve housing provided with a seat, and
    A valve piston provided in the valve housing hole so as to be capable of moving back and forth, and provided with an annular first sealing material and a second sealing material at positions spaced apart in the axial direction;
    In a state in which the valve piston is incorporated in the valve accommodation hole, the opening of the valve accommodation hole is detachably sealed, and a valve cap through which a base end portion of the valve piston is passed in a watertight state,
    The valve piston is advanced and retracted by a cam,
    The first sealing material is brought into contact with the valve seat portion to block communication between the first opening on the distal end side and the second opening on the proximal end side. In this state, the second sealing material is the valve A flow path control valve characterized in that a chamber is formed at a base end portion of the accommodation hole, and the chamber communicates with the first opening through a communication hole of the valve piston.
  2. The valve housing hole is vertically provided so as to open upward of the valve housing, and the first opening is formed in a peripheral side wall or a lower wall below the valve seat portion, while the first opening is formed above the valve seat portion. The second opening is formed in the peripheral side wall of
    The valve piston has an enlarged diameter portion at a lower end portion and an intermediate portion in the vertical direction, and the first seal material is provided in the lower enlarged diameter portion, and the first enlarged diameter portion in the vertical direction midway portion Two sealing materials are provided, and this second sealing material slides on the tubular portion of the valve cap,
    The upper part of the valve housing is provided with a camshaft and a lever shaft in parallel along the left-right direction,
    The lever shaft is provided with a lever swingable,
    One end of the lever is held by the upper end of the valve piston, and the other end engages with a pin groove on the side surface of the cam. The flow path control valve according to claim 1, wherein the flow path control valve is moved.
  3. Connected to a pressure tank containing the ion exchange resin bed and a regenerant tank storing the regenerant of the ion exchange resin bed,
    A plurality of the valve accommodation holes are formed in the valve housing in which the setting flow path is formed, and a plurality of valves are provided by attaching the valve piston and the valve cap to each valve accommodation hole,
    On the upper part of the valve housing, a camshaft for operating each valve is provided along the left-right direction,
    With the camshaft as a boundary, the plurality of valves are arranged separately in the front and rear in a first valve group and a second valve group,
    The first valve group includes a first water valve provided in a first water passage from the raw water inlet to the pressure tank, and a second water passage provided in a second water passage from the pressure tank to the treated water outlet. A valve and a bypass valve provided in a bypass passage connecting the first water passage and the second water passage are arranged side by side;
    The regenerative valve provided in the regenerant path through which the regenerant of the ion exchange resin bed is passed is included in either the first valve group or the second valve group,
    The flow path control valve according to claim 1 or 2, wherein the second valve group includes a remaining valve that is not included in the first valve group, arranged side by side.
  4. The pressure tank comprises an upper water inlet, a lower water outlet and a central water outlet,
    The valve housing includes a regenerant port connected to the regenerant tank in addition to the raw water inlet, the treated water outlet and the drain port.
    The valve housing is provided with an ejector for sucking the regenerant from the regenerant tank,
    The flow path on the outlet side of the ejector is branched into a first regeneration path to the upper water passage and a second regeneration path to the lower water passage,
    The first water valve provided in the first water passage from the raw water inlet to the upper water inlet;
    The second water valve provided in the second water passage from the lower water passage to the treated water outlet;
    Provided in the bypass passage that connects the first water passage on the raw water inlet side with respect to the first water passage valve and the second water passage on the treated water outlet side with respect to the second water passage valve. A bypass valve;
    A backwash drain valve provided in a backwash drainage channel from the upper water inlet to the drain;
    A washing drain valve provided in a washing drainage channel from the lower water inlet to the drain;
    A regeneration drain valve provided in a regeneration drainage channel from the central water inlet to the drain;
    The regeneration valve provided in the regeneration agent path from the regeneration agent port to the suction port of the ejector;
    A distribution valve provided in the second regeneration path,
    The first valve group includes the first water valve, the second water valve, and the bypass valve,
    The second valve group includes the backwash drain valve, the wash drain valve, the regeneration drain valve, the distribution valve,
    The flow control valve according to claim 3, wherein the regeneration valve is included in either the first valve group or the second valve group.
  5. As the arrangement of each valve in the first valve group and the second valve group,
    The bypass valve is disposed between the first water valve and the second water valve,
    The backwash drain valve and the wash drain valve are disposed adjacent to each other, and the regeneration drain valve is disposed adjacent to the back flush drain valve,
    The regeneration valve and the distributing valve are arranged adjacent to each other or facing each other;
    The raw water inlet and the treated water outlet are provided on the first valve group side,
    The flow path control valve according to claim 4, wherein the drain port is provided on the second valve group side.
  6. The ejector includes an ejector body and a nozzle to the ejector body.
    The water supply path to the nozzle is provided with a strainer and a constant flow valve,
    The ejector receiving hole formed in the valve housing incorporates the ejector body, the nozzle, the strainer, and the constant flow valve, and has an opening sealed with a removable cover material. Item 6. The flow path control valve according to item 4 or 5.
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49146540U (en) * 1973-04-13 1974-12-18
JPS51102038U (en) * 1975-02-14 1976-08-16
JPS5296417A (en) * 1976-02-10 1977-08-13 Yamatake Honeywell Co Ltd Fluid distributor
JPS6467294A (en) * 1987-09-07 1989-03-13 Miura Kogyo Kk Passage-controlling valve mechanism of piston type for water softener or the like
JPH09296879A (en) * 1996-05-01 1997-11-18 Miura Co Ltd Valve structure of water softener
US5910244A (en) * 1996-01-26 1999-06-08 Autotrol Corporation Adaptable control valve for fluid treatment system
JP2001011913A (en) * 1999-06-29 2001-01-16 Inax Corp Shower device
JP2007078092A (en) * 2005-09-15 2007-03-29 Miura Co Ltd Valve
JP2012157793A (en) * 2011-01-28 2012-08-23 Miura Co Ltd Ion exchange apparatus
WO2014049836A1 (en) * 2012-09-28 2014-04-03 三浦工業株式会社 Flow passage control valve

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49146540U (en) * 1973-04-13 1974-12-18
JPS51102038U (en) * 1975-02-14 1976-08-16
JPS5296417A (en) * 1976-02-10 1977-08-13 Yamatake Honeywell Co Ltd Fluid distributor
JPS6467294A (en) * 1987-09-07 1989-03-13 Miura Kogyo Kk Passage-controlling valve mechanism of piston type for water softener or the like
US5910244A (en) * 1996-01-26 1999-06-08 Autotrol Corporation Adaptable control valve for fluid treatment system
JPH09296879A (en) * 1996-05-01 1997-11-18 Miura Co Ltd Valve structure of water softener
JP2001011913A (en) * 1999-06-29 2001-01-16 Inax Corp Shower device
JP2007078092A (en) * 2005-09-15 2007-03-29 Miura Co Ltd Valve
JP2012157793A (en) * 2011-01-28 2012-08-23 Miura Co Ltd Ion exchange apparatus
WO2014049836A1 (en) * 2012-09-28 2014-04-03 三浦工業株式会社 Flow passage control valve

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