JPH11141727A - Flow rate control valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flow rate control valve having flexibility. SOLUTION: A flow rate control valve is provided with a valve element 3 provided with a valve chest 2 and a raw water inlet 10, a catchment member 4 provided with a catchment passage 8 corresponding to the valve chest 2 and a raw water outlet 15, and a cover member 6 provided with a space part 27 corresponding to the valve chest 2 and a water circulating passage 22 communicated with the raw water inlet 10, the catchment member 4 is fixed to one side of the valve element 3, and the cover member 6 is fixed to the other side of the valve element 3 through a diaphragm 5, a flow rate control mechanism is arranged on a part for communicating the valve chest 2 and the catchment passage 8 with each other, the diaphragm 5 is operated, an operating mechanism 7 is arranged so as to supply the raw water to the valve chest 2 and stop to supply the raw water to the valve chest 2, and a solenoid valve 9 is arranged so as to control the operating mechanism 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow control valve for controlling a flow rate of a liquid.

[0002]

2. Description of the Related Art Conventionally, a commercially available motor valve or the like has been used as a means for controlling the flow rate of a liquid (for example, raw water) supplied according to a request from a load. However, the control of the flow rate is, for example, 1 ton / hour, 2 ton / hour, 3 ton / hour.
In the case of controlling the supply of raw water of 4 tons / hour or 4 tons / hour, the supply amount of the above-mentioned commercially available motor valve is so large that it is difficult to cope with it with a fixed specification. Also needs to be changed, and there is a problem with sharability.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a versatile flow control valve capable of supplying a liquid having a different flow rate at a predetermined time set in view of the above problems. Things.

[0004]

Means for Solving the Problems The present invention has been made to solve the above problems, and the invention according to claim 1 has a valve body having a valve chamber and a raw water inlet; A water collecting member having a water collecting passage and a raw water outlet corresponding to the valve chamber, and a cover member having a space corresponding to the valve chamber and a water passage communicating with the raw water inlet, and Affixing the water collecting member on one side, fixing the cover member on the other side via a diaphragm, providing a flow control mechanism in a communicating portion between the valve chamber and the water collecting passage, operating the diaphragm, An operation mechanism for supplying or stopping supply of raw water to the valve chamber is provided, and an electromagnetic valve for controlling the operation mechanism is further provided. The invention according to claim 2, wherein the flow control mechanism is provided. Are connected to the valve chamber and the water collecting passage. And a flow control orifice provided in each flow path. The invention according to claim 3 is characterized in that the flow control is detachable from each flow path. The invention according to claim 4, wherein a return hole is provided in the valve body, and a return flow passage communicating with the return hole is provided in the water collecting member. A return path communicating with the return hole is provided in the cover member, a backflow preventing means is provided in the return path, and a valve seat receiving the action of the electromagnetic valve is formed in the return path, and water is taken in the return path. The invention is characterized in that a mouth is provided, and the invention according to claim 5 includes a valve body having a plurality of valve chambers and a raw water inlet, and a water collecting passage and a raw water outlet corresponding to each of the valve chambers. Water collecting member and each of the above A cover member provided with a space corresponding to the chamber and a water passage communicating with the raw water inlet, fixing the water collecting member to one side of the valve element, and connecting the cover to the other side via a diaphragm. A member is fixed, and a flow control mechanism is provided at a communication portion between each of the valve chambers and each of the water collecting passages, and the diaphragm is operated for each of the valve chambers to supply or stop supply of raw water to each of the valve chambers. And an electromagnetic valve for controlling each of the operating mechanisms is provided.The invention according to claim 6, wherein each of the flow rate control mechanisms is provided in each of the valve chambers. A plurality of flow passages communicating with the water collecting passages are formed, and each of the flow passages is provided with an orifice for controlling a flow rate. The invention according to claim 7, wherein For detachable flow control on road The invention is characterized in that a plug is mounted, and the invention according to claim 8 further provides a return hole corresponding to each of the valve chambers in the valve body, and communicates with the water collecting member with each of the return holes. In addition to providing a return channel,
A return path communicating with each of the return holes is provided in the cover member, and a valve seat receiving the action of each of the electromagnetic valves is provided in each of the return paths, and a return of any one of the return paths is provided. A backflow prevention means is provided in the flow path, and a water intake port is provided in the return path communicating with the return flow path provided with the backflow prevention means.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described. The present invention relates to a valve body having a valve chamber and a raw water inlet, a water collecting passage corresponding to the valve chamber, and a raw water outlet. A water collecting member provided, comprising a cover member having a space corresponding to the valve chamber and a water passage communicating with the raw water inlet, fixing the water collecting member to one side of the valve body, On the other side, the cover member is fixed via a diaphragm, a flow rate control mechanism is provided in a communication portion between the valve chamber and the water collecting channel, and the diaphragm is operated to supply or stop supply of raw water to the valve chamber. This is realized in a flow control valve having a configuration in which an operating mechanism for performing the operation is provided and an electromagnetic valve for controlling the operating mechanism is further provided.

[0006] A plurality of (for example, four flow paths) communicating with the water collecting passage in the valve chamber as the flow control mechanism are formed in the valve body by opening a communication hole and a return hole communicating with the raw water inlet and the cover member. Are formed, and an orifice for controlling the flow rate is provided above each of the flow paths. The water collecting member has a return flow passage communicating with the raw water outlet and the return hole, and the return flow passage is provided with a check valve as a check prevention means. An insertion hole for inserting the flow rate control plug is opened in a portion corresponding to each of the flow paths, and a lid member is provided on a lower surface of the insertion hole. The flow rate control plug controls the flow rate by closing or opening the respective flow paths according to the raw water supply amount required on the load side. Further, the cover member has a water passage hole and a water passage communicating with the communication hole, and a return passage communicating with the return hole, and a valve seat receiving the action of the electromagnetic valve is provided on the return passage. In addition, a water intake port for extracting a part of the raw water is provided in the return path. Here, the check valve and the water intake may be omitted depending on the implementation.

The operating mechanism opens the diaphragm to allow the raw water flowing from the raw water inlet to flow into the valve chamber, and transfers the raw water flowing into the water collecting passage through the flow path to the load from the raw water outlet to a load. It supplies the flow rate. Therefore, the configuration of the operating mechanism is such that a space is formed in a portion corresponding to the valve chamber inside the cover member, a boss having a guide hole is formed in the center of the space, and the guide hole is formed in the guide hole. A diaphragm pressing member having a guide portion to be freely inserted is provided. Then, a spring for closing the valve chamber is mounted on the diaphragm pressing member via the diaphragm. On the other hand, a holding member having a boss for holding the diaphragm from the valve chamber is provided, and the holding member, the diaphragm, and the diaphragm pressing member are fixed by appropriate means. T for fixing the flow control orifice below the holding member
An orifice fixing member having a U-shape is provided, and a boss of the holding member is movably inserted into a hole formed in a projection of the orifice fixing member. The orifice fixing member is fixed to the valve body by an appropriate means so as to communicate with the flow path via the orifice.

Next, a description will be given of an electromagnetic valve for controlling the operation mechanism. The solenoid valve is provided on an upper surface of the cover member corresponding to the valve seat. The tip of the iron core of this solenoid valve abuts on the valve seat to shut off the return path. Due to the interruption of the return path, the operating mechanism operates the diaphragm to the closed side to stop the supply of the raw water.
Further, when the solenoid valve is operated and the return path is opened,
The diaphragm operates to the open side to supply raw water.

[0009] The intake port provided in the return path can supply a small amount of raw water from the intake port during supply of raw water, for example, by a request from the load side (supply water or the like). Further, the check valve prevents backflow of raw water from the catchment channel. When the supply is unnecessary, the water intake is sealed by an appropriate means.

[0010] As described above, the flow control valve of the present invention comprises:
A plurality of flow paths are opened in a valve chamber, and flow control orifices are respectively provided in the flow paths, and flow control is performed by mounting a flow control plug in each of the flow paths so as to conform to a set flow rate. It is. Therefore, since the supply amount of raw water can be changed by opening and closing the flow path, the size of the water supply pipe connected to the flow control valve may be constant, and therefore, there is commonality and convenience. is there. Further, the flow control valve of the present invention is provided with a plurality of valve chambers,
The flow rate may be controlled in multiple stages.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. The following embodiment is an explanation in the case where two valve chambers are provided, FIG. 1 is an explanatory plan view of a flow control valve according to the present invention, and FIG. 2 is a cross-sectional explanation along line II-II in FIG. FIG. 3 is an explanatory sectional view taken along line III-III in FIG. FIG. 4 is an explanatory diagram schematically showing a configuration in which a flow control valve according to the present invention is provided in a raw water supply line of a deaeration system.

Referring to FIGS. 1, 2 and 3, a flow control valve 1 according to the present invention is a valve body 3 having a valve chamber 2, 2 divided into two chambers, and one side of the valve body 3. A water collecting member 4 fixed to the lower surface, a cover member 6 fixed to the upper surface, which is the other side of the valve body 3, via a diaphragm 5, operating mechanisms 7, 7 for vertically moving the diaphragm 5, and the valve chamber 2
A flow control mechanism is provided in a communication portion between the water collecting member 4 and the water collecting passages 8, 8, and electromagnetic valves 9, 9 for controlling the operating mechanisms 7 are provided on the upper surface of the cover member 6. Consists of

As shown in FIGS. 2 and 3, the valve body 3 has a raw water inlet 10 at the center and a communication hole 11 communicating with the cover member 6. Each of the valve chambers 2 defined on the left and right of the center has four flow paths 12 as a flow control mechanism at the bottom thereof. An orifice 13 for controlling the flow rate is provided at an outlet of each of the flow paths 12 from each of the valve chambers 2. The flow rate of each orifice 13 in this embodiment is 500 liters / hour per one orifice. Therefore, the maximum flow rate of each valve chamber 2 is 200 liters / hour.
Time. That is, the valve body 3 in this embodiment
Will be 4000 liters / hour.

At both ends (left and right ends in FIG. 2) of the valve body 3, return holes 1 corresponding to the respective valve chambers 2 are provided.
4, 14 are drilled.

As shown in FIGS. 2 and 3, the water collecting member 4 is fixed to the lower surface of the valve body 3 by an appropriate means, and the raw water inlet 10 is formed at the bottom at the center. The central part of the valve body 3 is penetrated. Further, the water collecting member 4 is formed with water collecting passages 8 and 8 corresponding to the valve chambers 2 and a raw water outlet 15, and return flow passages 16 and 16 communicating with the return holes 14 respectively. Is formed.

In the water collecting member 4, a flow control plug 1 as a flow control mechanism detachably mounted on each of the flow paths 12 is provided at a bottom portion corresponding to each of the valve chambers 2.
Insert holes 18, 18 for inserting 7, 17 are opened, and lid members 19, 19 for sealing the respective insert holes 18 are provided, respectively. Further, a check valve 20 as a backflow preventing means is provided in one of the two return flow paths 16 (the return flow path 16 on the right side in FIG. 2 in this embodiment). The check valve 20 prevents backflow of raw water from the water collecting channel 8.

Each of the flow rate control plugs 17 controls the supply amount of raw water by opening or closing the respective flow paths 12 (eight flow paths in this embodiment) in accordance with the supply amount of raw water required on the load side. (In the embodiment shown in FIGS. 2 and 3, one is mounted in each valve chamber 2).

As shown in FIGS. 2 and 3, the cover member 6 is fixed to the upper surface of the valve body 3 by a suitable means via a diaphragm 5, and a water passage communicating with the communication hole 11 is provided. Water passage 2 to hole 21 and space portions 27, 27 described later
The return passages 2 and 22 are opened, and return passages 23 and 23 communicating with the respective return passages 16 are formed. Valve seats 24 and 24 are provided at predetermined positions of the respective return passages 23. A water intake 25 for taking out a part of the raw water is opened in the return passage 23 on the side where the check valve 20 is provided. The water inlet 25 is provided with a detachable stopper (not shown). In the embodiment shown in FIG. 2, the stopper is removed and the hose joint 26 is attached.

As shown in FIGS. 2 and 3, each of the operating mechanisms 7 has a space 27 formed in a portion corresponding to each of the valve chambers 2 inside the cover member 6. Respectively. Therefore, since the configuration of both the operating mechanisms 7 is the same, the following description will be made for the sake of simplicity.
Will be described.

First, the structure of the operating mechanism 7 constituting the upper surface of the diaphragm 5 will be described. On the upper surface of the diaphragm 5, a boss 29 formed at the center of the space 27, Guide hole 2 of this boss 29
And a diaphragm pressing member 31 having a guide portion 30 which is freely inserted into the movable member 8. The diaphragm pressing member 31 is formed in a disk shape having the same size as the outer peripheral wall of the valve chamber 2, and a concave portion 32 is formed on a surface opposite to the guide portion 30. A spring is provided between the upper surface of the diaphragm pressing member 31 and the ceiling of the space 27 to urge the diaphragm pressing member 31 downward, that is, in the direction in which the diaphragm 5 closes the valve chamber 2. 33 are mounted. The spring 33 is mounted so as to surround the outer periphery of the boss 29 and the guide 30.

Next, the structure of the actuating mechanism 7 constituting the lower surface of the diaphragm 5 will be described. On the lower surface of the diaphragm 5, the diaphragm 5 is held in opposition to the diaphragm pressing member 31. It comprises a holding member 34 to be fixed, and a T-shaped orifice fixing member 36 having a guide hole (reference numeral omitted) for freely inserting a guide portion 35 extending downward from the holding member 34. At the upper part of the holding member 34, a projection (not shown) is formed to fit into the recess 32 and to ensure the reliability of clamping and fixing the diaphragm 5. The orifice fixing member 36 prevents the diaphragm 5 from moving vertically in the center through the guide portion 35 and also fixes the orifice 13. That is, the orifice fixing member 36 is formed in a disk shape to be fitted into the valve chamber 2, and the disk portion has holes 37, 3 respectively corresponding to the respective flow paths 12.
7, ... are drilled. Therefore, the orifice fixing member 36 is connected to the valve chamber 2 such that the holes 37, the orifices 13 and the flow paths 12 communicate with each other.
Is fixed inside.

Next, the solenoid valves 9 for controlling the respective operating mechanisms 7 will be described. The two solenoid valves 9 have the same configuration. Here, one of the solenoid valves 9 will be described. The solenoid valve 9 is provided on the upper surface of the cover member 6 at a position corresponding to each valve seat 24.
This solenoid valve 9 is an iron core that operates in the up-down direction (reference numerals omitted).
Abuts against the valve seat 24 to shut off the return passage 23. When the return path 23 is cut off, the urging force of the spring 33 and the space 2
7, the diaphragm 5 moves to the closing side, and the diaphragm 5 moves to the valve chamber 2.
Of the raw water is closed by closing the opening of the raw water.
Is stopped (the state on the left side of FIG. 2). When the solenoid valve 9 is actuated and its iron core moves upward, the return path 23 is opened, and the raw water in the space 27 flows out of the return path 23 to the return path 16. As a result, the raw water pressure in the space portion 27 stops working, and the water passage 22 has a large pressure loss, so that the raw water pressure acting on the lower surface of the diaphragm 5 increases. Therefore, while the raw water pressure on the upper surface of the diaphragm 5 is released, the raw water pressure on the lower surface of the diaphragm 5 acts, and the diaphragm 5 moves to the opening side against the urging force of the spring 33, Raw water is supplied to the valve chamber 2 by opening the opening of the valve chamber 2 (the state on the right side in FIG. 2).

The operation of the flow control valve 1 of the embodiment shown in FIGS. 1 to 3 will now be described.
In a configuration in which two valve chambers 2 are provided as in this embodiment, when one solenoid valve 9 is operated to open one return path 23, only one valve chamber 2 supplies raw water. And both solenoid valves 9 are actuated to operate both return paths 2
When the valve 3 is opened, both valve chambers 2 supply raw water. That is, when both the solenoid valves 9 are simultaneously operated and when only one of them is operated, the flow rate of the raw water is twice as different.

Next, a description will be given of a flow rate control which replaces the above flow rate control. In the above embodiment, the water flow per one of the orifices 13 is, for example, 500 liters per hour, and eight orifices 13 are provided. Therefore, the minimum flow rate is 500 liters / hour and the maximum flow rate is 4000 liters / hour. Up to time, the flow rate can be controlled in units of 500 liters / hour. That is, it can be realized by mounting the flow control plug 17 on each of the flow paths 12 so as to match a predetermined flow rate, and operating the two solenoid valves 9 and 9 individually or simultaneously. Further, by changing the specification (flow rate) of each of the orifices 13, it is possible to change the raw water supply amount.

Further, an embodiment in which the flow control valve 1 according to the present invention is used in a raw water supply line of a deaeration system will be described with reference to FIG. FIG. 4 shows a deaeration system 39 in which one or a plurality of deaeration modules 38 can be arranged. For example, if the amount of water treated in the deaeration module 38 is 1,000 liters per hour, By using the control valve 1, the present invention can be applied to a degassing system 39 in which one to four degassing modules 38 are provided. Further, the pipes of the raw water supply line 40 connected to the flow control valve 1 may be the same and have good commonality.
Then, a hose 43 having a predetermined orifice (not shown) attached to the hose joint 26 is connected to a water sealing tank 42 provided in a water-sealed vacuum pump 41 for vacuum-evacuating the inside of the degassing module 38. . The raw water supplied from the hose 43 is for preventing the circulated sealed water in the water sealing tank 42 from being concentrated, and the concentrated sealed water is discharged from the overflow line 44.

Therefore, in the embodiment shown in FIG. 4, the raw water supplied from the hose 43 is stopped at the same time when the supply of the raw water to the degassing module 38 is stopped, which is extremely effective.

In FIG. 4, the water-sealed vacuum pump 41 is connected to the water-sealing tank 42 via a water-sealing circulation line 45. The degassing module 38
The treated water is stored in a treated water tank 46 and then supplied to various loads (not shown).

[0028]

As described above, the present invention relates to a valve element having a valve chamber and a raw water inlet, a water collecting member having a water collecting passage corresponding to the valve chamber and a raw water outlet, A cover member provided with a space corresponding to the chamber and a water passage communicating with the raw water inlet, fixing the water collecting member to one side of the valve element, and connecting the cover to the other side via a diaphragm. Fixing a member, providing a flow control mechanism in a communicating portion between the valve chamber and the water collecting channel, providing an operating mechanism for operating the diaphragm and supplying or stopping supply of raw water to the valve chamber, further comprising the operation Since the solenoid valve for controlling the mechanism is provided, the flow rate can be controlled to a predetermined value by changing the specification of the orifice. Further, by attaching flow control plugs to a plurality of flow paths of the flow control mechanism, the flow rate can be controlled in multiple stages.
Further, by adopting a configuration in which a plurality of the valve chambers are provided,
It is possible to control the flow rate proportionally.
Furthermore, since the water inlet is provided in the cover member, a part of the raw water can be taken out during the supply of the raw water, which is very effective.

As described above, the flow control valve of the present invention
Raw water of a predetermined flow rate from a large flow rate to a small flow rate is supplied to the load side in multiple stages, and the specifications of a supply pipe connected to the flow control valve can be made constant.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a flow control valve according to the present invention.

FIG. 2 is an explanatory sectional view taken along line II-II of FIG.

FIG. 3 is an explanatory sectional view taken along line III-III in FIG. 1;

FIG. 4 is an explanatory view schematically showing a configuration in which a flow control valve of the present invention is provided in a raw water supply line of a deaeration system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 flow control valve 2 valve chamber 3 valve body 4 water collecting member 5 diaphragm 6 cover member 7 operating mechanism 8 water collecting passage 9 electromagnetic valve 10 raw water inlet 11 communication hole 12 flow path 13 orifice 14 return hole 15 raw water outlet 16 return flow path 17 Flow control plug 20 Backflow prevention means (check valve) 21 Water hole 22 Water passage 23 Reflux path 24 Valve seat 25 Water intake

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Go Yoneda 7-Horie-cho, Matsuyama-shi, Ehime Miura Kogyo Co., Ltd. (72) Inventor Gen Moto Abe 7-Horie-cho, Matsuyama-shi Ehime Pref. Inventor Hiroaki Fujiwara Miura Kogyo Co., Ltd. 7, Horie-cho, Matsuyama-shi, Ehime

Claims (8)

[Claims] A valve body provided with a valve chamber and a raw water inlet.
A water collecting member 4 having a water collecting channel 8 and a raw water outlet 15 corresponding to the valve chamber 2; and a space 27 corresponding to the valve chamber 2.
And a cover member 6 having a water passage 22 communicating with the raw water inlet 10. The water collecting member 4 is fixed to one side of the valve body 3, and the cover is provided via a diaphragm 5 to the other side. An operation mechanism 7 for fixing the member 6 and providing a flow rate control mechanism in a communication portion between the valve chamber 2 and the water collecting passage 8 to operate the diaphragm 5 to supply or stop supply of raw water to the valve chamber 2. And a solenoid valve 9 for controlling the operation mechanism 7 is provided. 2. The flow control mechanism forms a plurality of flow passages 12, 12,... Communicating with the water collecting passage 8 in the valve chamber 2, and each flow passage 12 has an orifice 13 for flow control. The flow control valve according to claim 1, wherein the flow control valve is provided. 3. The flow control valve according to claim 2, wherein a detachable flow control plug 17 is mounted on each of the flow paths 12. 4. A return hole (14) is provided in the valve body (3), a return flow path (16) communicating with the return hole (14) is provided in the water collecting member (4), and the return hole (14) is communicated with the cover member (6). A return path 23 is provided, a return flow preventing means 20 is provided in the return path 16, and a valve seat 24 receiving the action of the solenoid valve 9 is provided in the return path 23.
The flow control valve according to any one of claims 1 to 3, wherein a water inlet (25) is provided in the return path (23). 5. A valve body 3 having a plurality of valve chambers 2, 2,... And a raw water inlet 10, and water collecting passages 8 corresponding to the respective valve chambers 2.
, A raw water outlet 15, and spaces 27, 27,... Corresponding to the respective valve chambers 2, and water passages 22, 22,. The water collecting member 4 is provided on one side of the valve body 3.
And the cover member 6 is fixed to the other side via a diaphragm 5, and a flow control mechanism is provided at a communication portion between each of the valve chambers 2 and each of the water collecting channels 8. An operating mechanism 7, which is operated for each valve chamber 2 to supply or stop supply of raw water to each valve chamber 2;
, Provided with solenoid valves 9, 9,... For controlling the respective operating mechanisms 7. 6. Each of the flow control mechanisms forms a plurality of flow passages 12, 12,... Communicating with each of the water collecting passages 8 in each of the valve chambers 2, respectively. The flow control valve according to claim 5, wherein each of the orifices (13) is provided. 7. The flow control valve according to claim 6, wherein a detachable flow control plug 17 is attached to each of the flow paths 12. 8. The valve body 3 is provided with return holes 14, 14,... Corresponding to the respective valve chambers 2, and the return channels 16, 16 are respectively connected to the water collecting member 4 with the respective return holes 14. , And a return path 23, which communicates with the cover member 6 with the return holes 14, respectively.
, Provided with valve seats 24, 24,... Which are acted on by the respective solenoid valves 9, in any one of the return passages 16. 6. A backflow prevention means 20 is provided at the bottom, and a water intake 25 is provided in the return path 23 communicating with the return flow path 16 provided with the backflow prevention means 20.
The flow control valve according to claim 7.