JPS6037478A - Diaphragm type liquid feeding valve - Google Patents

Abstract

PURPOSE:To restrict a water hammering phenomenon by connecting a main valve main body whose backpressure chamber is formed by a diaphragm and an operation valve, which operates this diaphragm, by means of a backpressure pipe in order to separate the above two into two separated bodies. CONSTITUTION:When a operation valve is closed, water feeding pressure reaches a backpressure chamber 30 through a small hole 35, while a diaphragm 27 is brought in contact with an annular valve seat 32 by pressure owing to the force of a spring 31 so that a flow passage from a water feeding port 22 toward a water feeding hose 39 is shut. Since the discharging hole of the operation valve is larger in diameter than the small hole 32 of the diaphragm plate 28, when the operation valve is opened, water feeding pressure in the backpressure chamber 30 is gradually decreased in order to open the annular valve seat 32. By operating the diaphragm gradually like this, a water hammering phenomenon can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm type liquid supply valve, and more specifically, a main valve main body in which a back pressure chamber is formed by a diaphragm and an operating valve for operating the diaphragm are connected to each other by a back pressure pipe. The present invention relates to a dead flam type liquid supply valve that allows remote control of liquid supply, effectively suppresses the water hammer phenomenon, and further simplifies the configuration.

For example, in a water supply valve for an automatic washing machine, a diaphragm 3 is provided between a water supply port 1 and a discharge port 2 so as to be able to move toward and away from a valve seat 4, as shown in FIG. A main valve main body 5 that opens and closes the flow path and an electromagnet unit 6 that operates the diaphragm J and 3 are integrally provided.

To further explain the operation of this conventional water supply valve, when the water is stopped, the pressing force of the spring 8 via the armature 7, the water pressure on the back pressure chamber 10 side through the small hole 9 provided in the diaphragm 3, and the water pressure on the water supply port 1 side Due to the pressure difference with the water pressure, the diaphragm 3 is brought into pressure contact with the valve seat 4, and 1F water is supplied. When water is supplied, the electromagnet is energized to attract the armature 7 against the energizing force of the spring 8. Then, the center hole 11 of the diaphragm 3 that was blocked by the armature 7 is opened, and since the center hole 11 is formed to have a larger diameter than the small hole 9, the center hole 11 is opened. Back pressure chamber 10
Since the amount of water flowing out from the diaphragm 3 to the discharge port 2 side is larger than the water flowing from the water supply port 1 into the back pressure chamber 10 through the small hole 9, the water pressure inside the back pressure chamber 1 degree decreases, and the water pressure inside the diaphragm 3 decreases. The diaphragm 3 separates from the valve seat 4 due to the water pressure difference on both sides, and a large amount of water is supplied.

However, in the above-mentioned conventional water supply valve, since the main valve body 5 and the electromagnet Unisol l-6 for operating the diaphragm 3 are provided integrally as described above, the back pressure chamber 10
The capacity is set as small as possible. This is because if the back pressure chamber is set larger, the suction distance of the armature 7 must be set larger, and the electromagnet unit 6 must be made stronger and larger.

2, since the capacity of the back pressure chamber 10 is small, when the armature 7 closes the center hole 11 of the diaphragm 3 during city water, the water pressure on the back pressure chamber 10 side increases rapidly, causing the diaphragm 3 to close to the valve seat 4. As a result of being pushed rapidly, a water hammer phenomenon may occur.

Furthermore, since the conventional method uses an electromagnetic unit 6 to control the diaphragm 3, it is not suitable for use as a water supply valve for an outdoor water sprinkler or the like where there is no power supply.

Furthermore, even if the back pressure chamber 10 is set to a small capacity as described above, the suction distance of the armature 7 of the electromagnet unit 6 must be set larger than the travel distance &11 of the diaphragm 3 during water supply, so for example, This is a wasteful movement compared to opening and closing a small hole etc. fixedly located at 111, and this also leads to an increase in the size of the electromagnet Unisol 1□6.

Furthermore, since the water supply valve is integrated into an automatic washing machine, etc., the water supply pressure remains unchanged in the connection hose between the water supply pipe of the water faucet, etc. and the water supply valve. Moreover, if the water hammer phenomenon occurs as mentioned above, even greater pressure will be applied.
A pressure-resistant hose such as a thick-walled rubber tube with internal fiber reinforcement must be used as a connection port, which is a factor in high costs.

The present invention has been made in view of the above-mentioned difficulties, and its purpose is to enable remote control of liquid supply, do not necessarily require a power source, effectively suppress the water hammer phenomenon, and further simplify the configuration. To provide a liquid supply valve capable of A back pressure chamber is provided at the back, and a small hole communicating between the back pressure chamber and the liquid supply side 1 is provided to form a main valve. An operation valve is provided separately from the main valve body, and includes a small discharge hole having a diameter larger than the small hole provided in the diaphragm, and a valve body for opening and closing the small discharge hole.

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

FIG. 2 is a sectional view showing the main valve 20.

Reference numeral 21 is a main valve body having a generally cylindrical overall shape, and has a water supply port 22 at one end and a discharge port 24 with a nozzle 23 screwed onto the other end. Note that 25 is an 0 ring. One side of the main valve body 21 is open, and a step 2 is formed on the rim of the opening.
6 is formed.

27 is a diaphragm in which a diaphragm plate 28 is fitted onto a rubber-like elastic piece, and its peripheral edge is connected to the edge of the back pressure case 29 fitted to the opening edge of the main valve body 21 and the step 26. The back pressure case 29 has a diaphragm 27
A back pressure chamber 30 is defined by. Also diaphragm 2
7 is biased by a spring 3I elastically loaded between the diaphragm plate 28 and the inner wall of the back pressure case 29, and the water supply port 22
and the discharge port 24 to abut on an annular valve seat 32 provided to partition a flow path between the water supply port 22 and the discharge port 24 for the relevant entertainment.
When the valve is separated from the annular valve seat 32, a flow path is formed from the water supply port 22 through the annular passage 33 and the central water supply channel 34 to the discharge port 24.

35 is a small hole bored in the diaphragm plate 28, which communicates the annular path 33 with the back pressure chamber 30. Therefore, fluid pressure from the annular valve seat 32 side and fluid pressure from the back pressure chamber 30 side act on the diaphragm 27. Note that the small hole 35 may be bored in the inner wall of the main valve body 21 (not shown) to connect the back pressure chamber 30 and the annular passage 33.

35' is a discharge path provided in the back pressure chamber 30L, which is connected from the back pressure hose 36 to an operating valve to be described later.

37 is a nozzle 2 between the central water supply channel 34 and the discharge port 24.
It is a ring-shaped flow rate regulating valve that is fixedly held within the main valve body 21 by three edges, and is made of an elastic material such as rubber, and when the fluid pressure is high, the center hole diameter is bent to reduce the flow rate. Control to keep it almost constant.

In addition, 38 is a filter installed in the water supply port 22, and 39
is a water supply port.

As shown in FIG. 3, the main valve 20 can be connected to a water supply pipe such as a water faucet 40 via a joint 41.

The joint 41 is fixed to the faucet 40 in a watertight manner with a mounting screw 42, and the lower end is a nozzle 4 having a groove 43 on the outer periphery.
4.

As is clear from FIG. 2, the connection part of the 20 main valves includes an operating ring 45 slidably mounted on the tip of the water inlet 22, and a protrusion 46 protruding from the inner wall of the operating ring 45 and the water inlet. 22 A spring 48 is loaded between the protrusion 47 provided on the outer wall, and the operation yJ
15 is urged toward the tip of the water supply port 22. Reference numeral 49 denotes a retaining ring that comes into contact with the convex portion 46 to prevent it from being removed. 5
The ball is loosely fitted into a tapered through hole 51 formed in the outer wall of the water supply port 22. The operating ring 45 is pushed down against the biasing force of the spring 4B, and the ball 50 is brought into a state where it can freely rotate within the through hole 51, and the joint l-4+
Insert the nozzle 44 into the tip of the water supply port 22, and
When released, the operating ring 45 is pushed back by the spring 4FH, and at the same time the convex portion 46 pushes the ball 50 into the groove 43 of the nozzle 44.
This prevents it from being pushed in or pulled out.

Note that 52 is a seal body.

FIG. 4 is a sectional view with the operation valve 53 not closed.

54 is a valve inlet, and 55 is a valve outlet. One end of the back pressure hose 36 is connected to the nozzle 56 fixed to the valve inlet. The intervention valve 154 and the valve outlet 55 are connected via a small discharge hole 57 provided in the flow path.

Here, the small discharge hole 57 is formed to have a larger diameter than the small hole 35 provided in the diaphragms 1 and 28.

The tip of the small discharge hole 57 is formed in the valve seat 58.

Reference numeral 59 denotes an electromagnet unit, in which an armature 62 is moved against the valve seat 58 by a spring 61 loaded in a guide cylinder 60.
The seal valve 63 fixed at the tip of the armature 62 is pressed against the valve seat and blocks the flow path. When the electromagnet unit 59 is energized, the armature 62 is attracted against the biasing force of the spring 61 to open the flow path. Since the electromagnet Uniso I-59 itself is well known, its details will be omitted.

The present invention is configured as described above.

Next, an example in which the device of the present invention is used in a washing machine will be explained with reference to FIG.

As shown in FIG. 3, the main valve 20 is connected to a water supply pipe such as a water faucet 40, and the water supply hose 39 (see FIG. 2) is connected to the water supply pipe such as the water faucet 40.

5) is connected to the water supply vibro 5 of the washing machine 64. The operating valve 53 is installed inside the washing machine 64 as shown in the figure. The back pressure port 36 is connected to the nozzle 56 of the operation valve 53, and the valve outlet 55 is connected to the discharge pipe of the washing machine 64.
It is connected to the.

Here, the operation valve 53 is in a closed state, that is, the armature 6
2 is in pressure contact with the valve seat 58 under the force of the spring 61, the water supply pressure also reaches the back pressure chamber 30 through the small hole 35, and the diaphragm 27 is pushed against the annular valve seat 32 by the biasing force of the spring 31. The flow path from the water supply port 22 toward the water supply hose 39 is blocked. When the diaphragm 27 is in pressure contact with the annular valve seat 32, the water supply pressure to the diaphragm 27 from the direction of the annular valve seat 32 is as follows.
Since it is reduced by an amount corresponding to the area of the annular valve seat 32, a difference occurs in the water supply pressure on both sides of the diaphragm 27, and the diaphragm 27 is pressed against the annular valve seat 32 even more strongly.

Next, for example, when a push button switch (not shown) provided on the operation panel (not shown) of the washing machine 64 is turned on to energize the electromagnet unit 59, the armature 62 is attracted against the biasing force of the spring 61. , the operation valve 53 is opened. Then, the discharge small hole 57 of the operation valve 53 is connected to the diaphragm plate 28.
Since the small hole 35 is formed to be larger than the small hole 35, the amount of water in the back pressure chamber 30 flowing out into the discharge pipe 66 via the small discharge hole 57 is larger than the amount of water flowing into the back pressure chamber 30 from the small hole 35. Because there are more than
The water supply pressure in the back pressure chamber 30 gradually decreases, and the diaphragm 27
When the water supply pressure difference on both sides becomes larger than the biasing force of the spring 31, the diaphragm 27 is pushed toward the back pressure chamber 30 against the biasing force of the spring 31, the annular valve seat 32 is opened, and the water supply is stopped. Porth39. The water is supplied to the washing machine 64 via the water supply vibro 5. After the diaphragm 27 is separated from the annular valve seat 32, the water supply pressure is applied to the entire surface of the diaphragm 27, so the diaphragm 27 is pressed even more rapidly, and a large amount of water is supplied. Note that the supply water is always supplied at a substantially constant flow rate by the flow rate adjustment valve 37.

When the water is cut off, the electromagnet unit 59 may be de-energized and the operation valve 53 may be closed. When the operation valve 53 is closed, the pressure inside the back pressure chamber 30 gradually increases.

In the case of the present invention, the capacity on the back pressure side is increased by at least the amount of the back pressure hose 36, and if the resistance of the conduit 1 and the back pressure hose 36 have some elasticity, the elasticity will also affect the Compared to the case without a back pressure hose, the rise and fall speed of the pressure in the back pressure chamber 30 is slower.
Since the opening and closing of the diaphragm 27 can be removed, the water hammer phenomenon during ice water can be suppressed to that extent. According to the present invention, when the operation valve 53 is closed, it takes time for the internal pressure of the main valve body 21 to return from the dynamic hydraulic pressure to 1 to the hydrostatic pressure of the water amount, although it depends on the thickness, length, material, etc. of the back pressure hose 36. It is easy to slow down to about 1 to 3 seconds, and a slow operation of the diaphragm J, 27 can be achieved.

Further, according to the above embodiment, when opening and closing the small pull-out hole 57 of the operation valve 53, the position of the valve seat 58 of the small discharge hole 57 does not change, so the movement of the armature 62 is only 3L compared to the conventional one.
<, The electromagnet Uniso I~59 can be made smaller and simpler. Furthermore, when water is supplied, the water supply port 39. Since both the back pressure hose 36 becomes dynamic water pressure and is reduced in pressure, and the hydrostatic pressure that is the water supply pressure is applied only to the back pressure hose 36 when water is being supplied, it is only necessary to use a pressure resistant hose for the back pressure hose 36. However, as long as the back pressure hose 36 can control the internal pressure of the back pressure chamber 30, an inner diameter of 3.5** or less is sufficient, and there is no need to use a fiber-reinforced pressure hose.
Cost reduction can be achieved.

In addition, since the pressure in the water supply port 39 is further reduced by the flow rate control valve 37, the internal pressure of the water supply port 39 becomes almost atmospheric pressure, and the allowable water resistance pressure of the hose can be lowered.

FIG. 6 shows an embodiment applied to a water sprinkler.

The tip of a water supply port 39 is connected to the rear end of a water supply device 68 provided on the sprinkler main body 67. The rear end of the water supply hose 39 is connected to a water faucet or the like via a main valve (not shown) configured similarly to the previous embodiment.

At the tip of the water supply channel 68, a nozzle 69 and an adjustment tube 70 are used to change the shape of the water spray.

Reference numeral 71 denotes a back pressure passage, which is provided in the handle part 72 of the sprinkler main body 67, and one end opens into the water supply channel 68 as a small discharge hole 73, and the other end opens at the rear end of the handle part 72. A back pressure hose 36 extending from a main valve (not shown) is connected to this rear end opening. Note that the discharge small hole 7
3 is larger than the small hole provided in the diaphragm plate of the main valve.
is formed.

Reference numeral 74 denotes a push-button manually operated valve provided near the base of the handle portion 72.

Reference numeral 75 denotes a ball valve, which is movably housed in a horizontal hole 76 bored across the back pressure passage 71, and is biased toward the outlet by a spring 77 and stopped at a position where it closes the small discharge hole 73. ing.

A plunger 78 is slid into the horizontal hole 76, and by pressing a push button 79, the ball valve 75 is pushed in against the biasing force of the spring 77, thereby releasing the ball valve 75 from blocking the small discharge hole 73. As a result, the back pressure passage 71 is brought into communication with the discharge small hole 73.

Note that 80 is an O-ring.

When the push button 79 is pushed in, the ball valve 75 is removed from the small discharge hole 73, the water supply on the back pressure chamber side of the main valve flows out from the back pressure hose 36, and the pressure on the back pressure chamber side is reduced. Similarly, the main valve 20 is opened and a large amount of water can be supplied from the water supply hose 39.

FIG. 7 shows an embodiment applied to a quantitative water storage tank.

A water supply channel 82 is formed above the water tank 81, and the water supply channel 82 is connected via a water supply hose (not shown) to a main valve (not shown) fixed to a water faucet or the like in the same manner as described above.

83 is a back pressure passage, one end of which has a small discharge hole 8 in the water supply channel 82.
4, and a back pressure hose (not shown) extending from the main valve is connected to the other end.

Note that the small discharge hole is formed to have a larger diameter than the small hole provided in the diaphragm plate of the main valve No. 84.

Reference numeral 85 denotes a ball valve, which is movably slid into a vertical hole 86 provided across the back pressure passage 83, and when the water level in the water tank 81 is lower than the specified water level, it is closed by a spring 87 (
or by its own weight) is pushed down from the small discharge hole 84.

A plunger 88 is slid into the vertical hole 86 and has a float 90 fixed to the lower end of an extending rod 89 extending downward. Note that 91 is an O-ring, and 925 is an IA output path.

Since the small discharge hole 84 is opened when the water level in the water tank 81 is below the specified water level, the main valve (not shown) is opened similarly to the above, and a large amount of water is supplied from the water supply channel.

As the water level rises, the float 90 causes the ball valve 8 to
5 is pushed out and when the specified water level is reached, the hole valve 85
The small discharge hole 84 is closed, and the water is stopped in the same manner as described above. Although some water continues to be supplied even if the small discharge hole 84 is closed, the ball valve 85 is caught on the edge of the vertical hole 86 and cannot be pushed upward beyond the closed position of the small discharge hole 84. The water supply will eventually stop. That is, the portion of the vertical hole above the small discharge hole 84 is formed to have a slightly smaller diameter than the portion below.

In addition to the above embodiments, it is also possible to control multiple main valves with a single operating valve, and it is also possible to control a single main valve with multiple operating valves installed in parallel. .

Also, the back pressure hose and water supply port should be placed parallel to each other. In addition, it is also possible to separate them or arrange them coaxially.

The main valve can also be directly connected to a water supply pipe such as a water faucet.

The Ishiba Sakuben can also be connected to sensors for temperature, light, humidity, smoke, pressure, etc., and opened and closed according to any temperature.

As described below, according to the diaphragm type liquid supply valve according to the present invention, the main valve and the operating valve that controls the operation of the diaphragm of the main valve are connected by a hose or a pipe, so that (1) ) The operating valve can be of any mechanical configuration as well as the electromagnetic type, which is particularly advantageous in cases where there is no power supply for equipment used outdoors such as water sprinklers, and the operating valve can be placed in a fixed position. Since it is only necessary to open and close the small discharge hole, the structure can be simplified and provided at low cost. Further, the main valve can be controlled remotely, and in particular, if the operating valve is connected to sensors for temperature, light, smoke, etc., it can be suitably used for general purposes as an automatic water supply valve for sprinklers, field waterers, etc.

7 (2) The main valve back pressure chamber can be expanded by increasing the size of the electromagnet unit as in the past (capacity can be expanded, and at least the back pressure side capacity of the back pressure port or pipe portion is increased compared to the past). In addition, the resistance of the pipe, the elasticity of the pipe, etc. act effectively, and the rise in water supply pressure in the back pressure chamber becomes gradual, allowing the Gweet Flam to operate slowly, effectively suppressing the water hammer phenomenon. I can do it.

(3) The main valve can be directly connected to a water supply pipe such as a water faucet, and only a small-diameter back pressure hose or pipe needs to be pressure resistant, so it has various advantages such as being cost-effective. .

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional water supply valve. FIG. 2 is a sectional view showing the main valve, FIG. 3 is an explanatory view showing the main valve and the joint, and FIG. 4 is a sectional view not showing an example of the operating valve. Figure 5 is an explanatory diagram applied to an automatic washing machine.
FIG. 6 is an explanatory diagram of the application to a water sprinkler, and FIG. 7 is an explanatory diagram of the application to a quantitative water storage tank. DESCRIPTION OF SYMBOLS 1... Water supply port, 2... Discharge port, 3... Diaphragm, 4... Valve seat, 5... Main valve body, 6... Electromagnet unit, 7... Armature, 8... ··spring,
9... Small hole, 10... Back pressure chamber, 11... Center hole. 20... Main valve, 21... Main valve body 2 22... Water supply, 23... Nozzle, 24... Discharge port 5 25
...0 ring, 26...step, 27...diaphragm, 28...diaphragm plate, 29...back pressure case. 30... Back pressure chamber, 31... Spring. 32... Annular valve seat, 33... Annular path. 34...Central water supply channel, 35...Small hole. 35゛...Discharge path, 36...Back pressure hose. 37...Flow control valve, 38...Filter. 39...Water supply port, 40...Water faucet 541...
・Join I-, 42...Additional screw. 9 43...Concave groove, 44...Nozzle, 45...Operation ring, 46.47...Protrusion, 48...Spring, 4
9...Retaining ring. 50...Pole, 51...Through hole, 52...Seal body, 53...Operation valve, 54...Valve inlet, 55...
Valve outlet, 56... Nozzle, 57... Small discharge hole, 58
···valve seat. 59... Electromagnet Uniso i~, 60... Guide cylinder,
61... Spring, 62... Armature, 63.
... Seal valve, 64 ... Washing machine 5 65 ... Water supply pipe, 66 ... Discharge pipe, 67 ... Water sprinkler body,
68... Supply water channel, 69... Nozzle, 70... Adjustment cylinder, 71... Back pressure passage, 72... Handle portion, 73...
...Discharge small hole, 74...Manual operation valve, 75...Pall valve, 76...Side hole. 77...Spring, 78...Plunger, 79
...Push button, 80...Q IJ song 81
...Aquarium, 82... Water supply channel. 83...Back pressure passage, 84...Discharge small hole. 0 85...Ball valve, 86...Vertical hole, 87...Spring, 88...Plunger. 89...Extension rod, 90...Flow I. 91...0 ring, 92...discharge path. Patent applicant Shintai Seisakusho Co., Ltd. Representative Shigeharu Kanbayashi Agent (7762) Patent attorney 1 Figure 1 Figure 2 Figure 3 0 0 to 0

Claims (1)

[Claims] 1. In a diaphragm-type liquid supply valve that opens and closes a flow path by coming into contact with and separating from an annular valve seat between a liquid supply port and a discharge port, a back pressure chamber is provided behind the diaphragm, and the back pressure chamber and the liquid supply port side are provided. A main valve is formed by providing a small hole communicating with the diaphragm, and the main valve is connected to the back pressure chamber by a hose or pipe, and the flow path is provided with a small discharge hole having a larger diameter than the small hole provided in the diaphragm. A diaphragm type liquid supply valve, characterized in that an operating valve equipped with a valve body for opening and closing a small hole is provided separately from the main valve body.