JPH084943A - Constant flow rate valve device - Google Patents

Abstract

PURPOSE:To prevent the production of the abnormal noise, secure the flow rate even when a constant flow rate valve is plastically deformed, and prevent the reduction of the area of a flow passage to a water flowing groove by providing a plurality of water flowing grooves in the surface opposite to a water flowing hole in the outer circumferential part of a straightening plate. CONSTITUTION:When a solenoid valve is opened to feed water, a constant flow rate valve 10 made of elastic material such as rubber is pressed against a straightening plate 4 due to the water pressure. Because a plurality of water discharging grooves are provided in the straightening plate 4, the flow rate of a certain value is obtained even at low water pressure, and the straightening can be suppressed even at high water pressure. In addition, a water flowing groove 6a for high pressure which is not filled even when the high water pressure is applied to the constant flow rate valve 10, and a water flowing groove for adjusting the pressure to be closed at low and intermediate pressure are provided, the flow rate can be secured by the presence of the water flowing groove 6a for the high pressure even when the condition occurs where the constant flow rate valve 10 is used for a long time at high pressure, and plastically deformed to block the water flowing groove for adjusting the pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant flow valve device in a water supply device such as a local cleaning device.

[0002]

2. Description of the Related Art In a local cleaning device for performing anal cleaning or the like, a constant flow valve is attached to a portion of a water supply port main body provided in a hot water tank, which is connected to a water pipe side. It was going to be constant. As shown in FIG. 7, the conventional constant flow valve is provided with a fitting hole 3 having a diameter larger than that of the water flow hole 2 and communicating with the water flow hole 2 at the end of the water flow hole 2 of the water supply port main body 1, The rectifying plate 4 is located at the bottom of the fitting hole 3, the pin 5 is projected from the center of the rectifying plate 4, and the hole 10a is made of an elastic material such as rubber and penetrates in the front-rear direction. The flow valve 10 is fitted into the fitting hole 3, and the constant flow valve 1
0 is arranged on the front side of the constant flow valve 10, and the pin portion 5 is inserted into the hole 10a penetrating in the front and rear of the constant flow valve 10 so that water flows between the outer periphery of the pin portion 5 and the inner periphery of the hole 10a. It had a structure in which a gap was formed.

Water flows through the gap between the outer periphery of the pin portion 5 and the inner periphery of the hole 10a as shown by the arrow in FIG. 7, and at this time, the rubber constant flow valve 10 is opened by water pressure. 1
By changing the diameter of 0a, that is, in the case of high water pressure, the hole diameter becomes smaller so that the flow rate does not increase even if the water pressure increases. This ensures a constant flow rate regardless of the change in water pressure. I am trying to do it.

However, in this conventional example,
There was an abnormal sound called "pee." Although the mechanism of generation of abnormal noise is not yet known exactly, since water flows through the hole 10a in the center that penetrates the front and rear of the constant flow valve,
It is presumed that an abnormal sound of "beep" occurs.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to prevent the generation of abnormal sound and to maintain a high pressure for a long period of time. It is an object of the present invention to provide a constant flow valve device capable of ensuring a flow rate even when the constant flow valve is plastically deformed by being used, and preventing the flow passage area to the flowing water groove from being reduced.

[0006]

In order to solve the problems of the above-mentioned conventional examples and to achieve the object of the present invention, the constant flow valve device of the present invention is provided with an end portion of the water flow hole 2 of the water supply body 1. Is provided with a fitting hole portion 3 having a diameter larger than that of the running water hole 2 and communicating with the running water hole 2, the rectifying plate 4 is positioned at the bottom of the fitting hole portion 3, and the rectifying plate 4 is connected to the running water hole 2 from the central portion thereof. A pin portion 5 is provided so as to project in the opposite direction, a plurality of water flow grooves 6 are provided on the surface of the outer periphery of the flow straightening plate 4 on the side opposite to the water flow holes 2, and the water flow groove 6 is provided inside the flow water groove 6 of the flow straightening plate 4. A straightening hole 7 communicating with the flowing water hole 2 side is provided, and a projecting portion 8 is provided so as to project from the outer peripheral portion of the straightening plate 4 to the side opening portion of the flowing water groove 6 and the inner surface of the fitting hole portion 3. And a constant flow valve 10 made of an elastic material such as rubber is fitted in the fitting hole portion 3. The positioning hole 11 that is inserted and opened only on the side of the flow regulating plate 4 of the constant flow valve 10 is fitted into the pin portion 5 and the surface of the constant flow valve 10 on the side of the flow control plate 4 is provided with the flow groove 6 of the flow regulating plate 4. And a water passage gap 12 communicating with the passage gap between the outer surface of the constant flow valve 10 and the inner surface of the fitting hole 3 is formed. Is.

Further, the plurality of water flow grooves 6 provided in the flow straightening plate 4 are a high pressure water flow groove 6a which is not filled up even when a high water pressure is applied to the constant flow valve 10, and a pressure control water flow groove which is closed at low and medium pressures. 6b is also preferable. Also,
It is also preferable that the protruding portion 8 protruding outward from the outer peripheral portion of the flow straightening plate 4 is located at a position closer to the water flow hole 2 side than the groove bottom of the water flow groove 6.

[0008]

According to the present invention having the above-described structure, however, the constant flow valve 10 is set to a predetermined size by fitting the positioning hole 11 that opens only on the side of the flow regulating plate 4 of the constant flow valve 10 into the pin portion 5. In addition, the constant flow valve 10 is not provided with a through hole through which water flows, and the constant flow valve 10 is provided with a plurality of holes on the surface opposite to the water flow hole 2 in the outer peripheral portion of the flow regulating plate 4. The water flow groove 6 is provided, and the flow straightening plate 4 communicates with the water flow groove 6 at a position inside the water flow groove 6 and the water flow hole 2
A rectifying hole 7 communicating with the side is provided, and a projecting portion 8 is provided so as to project from the outer peripheral portion of the rectifying plate 4 to the outside to form a flow path between the side opening portion of the flowing water groove 6 and the inner surface of the fitting hole portion 3. Of the constant flow valve 10 is brought into contact with the surface of the constant flow valve 10 on the side of the flow straightening plate 4 where the flow groove 6 is provided.
By forming the water passage gap 12 communicating with the passage gap between the outer surface portion of and the inner surface portion of the fitting hole portion 3,
Water flows from the water passage gap 12 through the passage gap 9 to the running water groove 6
Flow through the flow straightening hole 7 to the water flow hole 2, and at this time, the portion of the constant flow valve 10 that has elasticity due to the water pressure on the upstream side of the constant flow valve 10 facing the water flow groove 6 is inside the water flow groove 6. By cutting in and changing the water flow area in this area, the flow rate does not increase even at high pressure. And
Although the reason is unclear by constructing the constant flow valve device without providing a water passage hole that penetrates the constant flow valve 10 back and forth as described above, the conventional constant flow valve 10 penetrates back and forth. Unlike the one with a water passage hole, it no longer produces an abnormal beeping sound.

The plurality of water flow grooves 6 provided on the flow regulating plate 4 are a high pressure water flow groove 6a which is not filled up even when a high water pressure acts on the constant flow valve 10, and a pressure control water flow groove which is closed at low pressure and medium pressure. 6b makes it possible to secure a target flow rate at high pressure by the high pressure water flow groove 6a even when the constant flow valve 10 having elasticity is plastically deformed after being used for a long time at high pressure. Since this is an area that achieves the target flow rate at high pressure, the target flow rate cannot be achieved only by this groove at low pressure, but by providing the pressure regulating water flow groove 6b that closes at low pressure and medium pressure, ~ It is possible to secure a flow rate at medium pressure.

Further, since the projection 8 projecting outward from the outer peripheral portion of the flow regulating plate 4 is located on the side of the water flow hole 2 rather than the groove bottom of the flow water groove 6, the flow path is formed by the projection 8 Gap 9
It is possible to ensure the above, and to prevent the flow passage area to the flowing water groove 6 from being reduced despite the provision of the protrusion 8.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 shows a sectional view of a constant flow valve device of the present invention. This constant flow valve device is provided at a water supply port for supplying water to a local washing device such as anus washing and bidet washing. In the figure, reference numeral 1 is a water supply port main body and a water flow hole 2 is provided, and one end portion of the water flow hole 2 is communicated with a local cleaning device side (shown by A in FIG. 1) and a water flow hole is provided on the other end side. A fitting hole portion 3 having a diameter larger than that of the hole 2 and communicating with the water flow hole 2 is provided. Then, this fitting hole 3
The upstream side is the water tap side (indicated by B in FIG. 1).

A straightening plate 4 is fitted and positioned at the bottom of the fitting hole 3. The rectifying plate 4 is shown in FIG.
As shown in FIG. 5, a pin portion 5 is provided so as to project from the central portion in the direction opposite to the water flow hole 2, and the outer peripheral portion having a donut shape and the pin portion 5 are provided.
Is integrally formed with the radial rib portion 13, and the rib portion 13 is thinner than the donut-shaped outer peripheral portion. A rectifying hole 7 is provided between the rib portions 13, and the rectifying hole 7 communicates with a flowing water groove 6 described later and also with the flowing water hole 2 side. A plurality of water flow grooves 6 are formed on the surface of the flow regulating plate 4 on the side opposite to the water flow hole 2 in the donut-shaped outer peripheral portion.
Is provided. The running water groove 6 may have various shapes such as a vertically or horizontally long rectangular shape as shown in FIG. 6, a trapezoidal shape, and a triangular shape. In the embodiment shown in FIG. 2, the flowing water groove 6 includes a high-pressure flowing water groove 6a which is not filled up even when a high water pressure acts on a constant flow valve 10 described later, and a low pressure,
A pressure regulating water flow groove 6b which is closed at medium pressure is provided. The high-pressure flowing water groove 6a has a narrow groove width and a deep groove depth, and the pressure regulating flowing water groove 6b has a wide groove width and a shallow groove depth. A projecting portion 8 is provided so as to project from the outer peripheral portion of the flow regulating plate 4 to the outside, and the projecting portion 8 hits the inner peripheral surface of the fitting hole portion 3 so that the flow regulating plate 4 is fitted exactly into the fitting hole portion 3, and Due to the presence of the projection 8, a flow passage gap 9 is formed between the side opening of the running water groove 6 and the inner surface of the fitting hole 3. Here, the projecting portion 8 projecting outward from the outer peripheral portion of the flow regulating plate 4 is displaced from the groove bottom of the flowing water groove 6 toward the flowing water hole 2 side. The gap 9 can be secured, and the flow passage area to the flowing water groove 6 is not reduced despite the provision of the protrusion 8. Further, the protrusion 8 may be provided over the entire circumference of the outer peripheral portion of the flow regulating plate 4 as in the embodiment of FIG.

The constant flow valve 10 is formed of an elastic body such as rubber, and as shown in FIG. 3, a plurality of elastic projections 14 are provided on the outer peripheral portion thereof. In addition, the constant flow valve 1
Numeral 0 is a positioning hole 1 which is opened only on the side of the flow straightening plate
1 is formed. By forming the positioning hole 11 in this way, the surface of the constant flow valve 10 on the side of the rectifying plate 4 has a donut shape. The constant flow valve 10 having the above-described configuration is inserted into the fitting hole portion 3, the positioning hole 11 of the constant flow valve 10 is fitted into the pin portion 5, and the surface of the constant flow valve 10 on the side of the rectifying plate 4 of the rectifying plate 4 is inserted. It contacts the surface on the side where the flowing water groove 6 is provided. In this case, the protrusion 14 hits the inner surface of the fitting hole portion 3, and the water passage gap 12 communicating with the flow passage gap is formed between the outer surface portion of the constant flow valve 10 and the inner surface portion of the fitting hole portion 3. Reserved.

FIG. 4 shows a piping diagram of a local cleaning device using the constant flow valve device having the above structure. In FIG.
30 is a water pipe, 31 is a water supply pipe to a low tank, 32 is a branch plug, 33 is a water supply pipe, 34 is a constant flow valve device, 35 is a solenoid valve, 36 is a reserve tank, 37 is a pump such as a gear pump, 38 is a A warm water tank and 39 are cleaning nozzles. Further, 40 is a drain port for draining water to the toilet bowl. Then, the tap water from the water pipe 30 is supplied from the water supply pipe 33 to the constant flow valve device 34 via the branch plug 32, is temporarily stored in the sub tank 36 via the solenoid valve 35, and the water is pumped and pressurized by the pump 37 from here. Hot water tank 3
8, and is jetted from the washing nozzle 39 as hot water from the hot water tank 38. Here, since the amount of washing water is 0.6 to 1.3 liters / minute, it is necessary to supply the amount of water supplied to the sub-tank 36 to 1.3 liters / minute or more even if the water pressure changes. Also, the washing water is 0.6
Although 1 liter / minute will be drained from the waste water port 40, if the amount of water supplied to the sub-tank 36 exceeds 1.3 liters / minute, this drained water amount increases and it is uneconomical. It should not exceed liters / minute. Therefore, in the constant flow valve device 34, it is desirable that the amount of water supplied to the sub-tank 36 is constant at 1.3 liters / minute even if the water pressure varies (however, 1.3 to It is about 1.8 liters / minute).

To explain the operation of the constant flow valve device, the principle of the present invention will be described. When the electromagnetic valve 35 is opened, water is supplied. In this case, the constant flow valve 10 made of an elastic material such as rubber due to water pressure. Is pressed against the flow straightening plate 4 as shown in FIG. If the water pressure is low here, the constant flow valve 1
The force of 0 being pressed against the flow straightening plate 4 is weak, and the flow groove 6 provided in the flow straightening plate 4 has a small amount of filling (blocking amount) as shown in FIG. 5B, so that a certain flow rate can be obtained even with low water pressure. Further, when the water pressure is high, the constant flow valve 10 is strongly pressed against the flow straightening plate 4, and the flow groove 6 provided in the flow straightening plate 4 is filled in a large amount (blocking amount) as shown in FIG. 5C. The flow rate can be suppressed even with high water pressure.

Further, in the present invention, a high-pressure water flow groove 6a which is not filled up even when a high water pressure acts on the constant flow valve 10 and a pressure-adjustment water flow groove 6 which is closed at low and medium pressures.
Since b is provided, it will be used for a long time at high pressure,
Even if the constant flow valve 10 made of an elastic material such as rubber is plastically deformed and the pressure regulating water flow groove 6b is closed, even when high water pressure acts on the constant flow valve 10. The existence of the high-pressure water flow groove 6a that does not fill up ensures the flow rate. However, since the high-pressure water flow groove 6a has an opening area that achieves a target flow rate at high pressure, at low pressure, the high-pressure water flow groove 6a alone cannot achieve the target flow rate. The pressure regulating water flow groove 6b for ensuring the flow rate at the pressure is required.

Further, as compared with the conventional type in which the constant flow valve 10 which is elastically deformed by water pressure is provided with a penetrating hole as in the prior art to adjust the flow rate by water pressure, the constant flow valve which is elastically deformed by water pressure as in the present invention is used. 10 does not have a through hole, but a plurality of running water grooves 6 are provided in a portion of the outer periphery of the flow straightening plate 4 facing the flow straightening plate 4 to adjust the flow rate. I didn't.

[0018]

According to the present invention, as described above, the pin portion is provided so as to project from the central portion of the flow regulating plate in the direction opposite to the water flow hole, and the positioning hole is formed only on the flow regulating plate side of the constant flow valve. By fitting it into the pin part, the constant flow valve can be positioned and combined with the flow straightening plate in a predetermined state, and a plurality of running water flows on the surface opposite to the water flow holes on the outer periphery of the flow straightening plate. A groove is provided, a rectifying hole is provided inside the flowing groove of the rectifying plate, which communicates with the flowing groove and is connected to the flowing hole side, and a protrusion is projected from the outer periphery of the rectifying plate to the outside of the flowing groove. Side opening and the inner surface of the fitting hole, a gap for the flow path is formed, and a constant flow valve made of an elastic material such as rubber is inserted into the fitting hole, and the rectifying plate side of the constant flow valve is inserted. Contact the surface of the straightening plate on the side where the flow groove is provided , A water passage gap is formed between the outer surface of the constant flow valve and the inner surface of the fitting hole, and the through hole is formed in the constant flow valve as in the past. Since it is not provided, water flows from the water passage gap through the passage gap to the flowing water groove and from the flow straightening hole to the flowing water hole. At this time, it has elasticity due to the water pressure on the upstream side of the constant flow valve. The part of the constant flow valve facing the running water groove cuts into the running water groove to change the water flow area of this part so that the flow rate does not increase even at high pressure. By configuring a constant flow valve device without providing a water passage hole that penetrates the flow valve in the front and back,
The conventional constant flow valve is provided with a water passage hole that penetrates the front and back, so that an abnormal sound of "beep" is not generated.

Further, the plurality of water flow grooves provided on the flow straightening plate are composed of a high pressure water flow groove which is not buried even when a high water pressure acts on the constant flow valve and a pressure control water flow groove which is closed at low and medium pressures. Is used for a long time at high pressure,
Even if the elastic constant flow valve undergoes plastic deformation, the high-pressure running water groove can ensure the target flow rate at high pressure, and the high-pressure groove is an area that achieves the target flow rate at high pressure. At times, the target flow rate cannot be achieved only with this groove, but by providing a pressure regulating water flow groove that closes at low and medium pressures, the flow rate can be secured at low to medium pressures.

Further, since the protruding portion protruding outward from the outer peripheral portion of the flow regulating plate is located at a position closer to the water flow hole side than the groove bottom of the flowing water groove, the protruding portion can secure a gap for the flow path. In spite of the provision of the protrusion, it is possible to prevent the flow passage area to the flowing water groove from being reduced.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of a main part of an embodiment of the present invention.

2A and 2B show a rectifying plate used in the same as above, FIG. 2A is a plan view, FIG. 2B is a side view, FIG. 2C is a sectional view taken along line XX of FIG. FIG. 7A is a view from the direction of the arrow Y in FIG.

FIG. 3 shows a constant flow valve used in the same as above, (a) is a sectional view, and (b) is a bottom view.

FIG. 4 is a piping diagram of a local cleaning device using the constant flow valve device of the present invention.

FIG. 5 is an operation diagram of the present invention, in which (a) is an explanatory view showing a state where water pressure is applied to the constant flow valve and the constant flow valve bites into the flowing water groove, and (b) is the same as above. It is an explanatory view in a case, and (c) is an explanatory view in case water pressure is high.

6 (a), (b) and (c) are perspective views showing respective examples of flowing water grooves.

FIG. 7 is a cross-sectional view of a conventional constant flow valve device.

[Explanation of symbols]

 1 Water inlet main body 2 Flow hole 3 Fitting hole 4 Rectifying plate 5 Pin section 6 Flow groove 6a High pressure flowing groove 6b Pressure adjusting flowing groove 7 Rectifying hole 8 Projection 9 Flow path gap 10 Constant flow valve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Sakurai 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (3)

[Claims] 1. An inflow hole having a diameter larger than that of the inflow hole and communicating with the inflow hole is provided at an end portion of the inflow hole of the water supply port main body, and a current plate is located at a bottom of the inflow hole, and a current plate is provided. From the central part of the, project the pin part in the direction opposite to the water flow hole,
A plurality of water flow grooves are provided on the surface of the outer periphery of the flow straightening plate on the side opposite to the water flow holes, and a flow straightening hole is provided inside the flow water groove of the flow straightening plate so as to communicate with the flow water groove and to the water flow hole side. A constant flow rate consisting of an elastic body such as rubber that forms a gap between the side opening of the running water groove and the inner surface of the fitting hole by projecting a protrusion from the outer periphery of the Insert the valve into the fitting hole, insert the positioning hole that opens only on the rectifying plate side of the constant flow valve into the pin, and set the surface of the constant flow valve on the rectifying plate side to the side where the flow groove of the rectifying plate is provided. A constant flow valve device, wherein the constant flow valve device is formed in contact with a surface, and a water passage gap is formed between the outer surface portion of the constant flow valve and the inner surface portion of the fitting hole to communicate with the passage gap. 2. A plurality of running water grooves provided in the straightening plate,
2. The constant flow valve according to claim 1, wherein the constant flow valve is composed of a high pressure water flow groove that is not buried even when a high water pressure acts on the constant flow valve, and a pressure control water flow groove that is closed at low pressure and medium pressure. apparatus. 3. The constant flow valve device according to claim 1, wherein a protrusion protruding outward from an outer peripheral portion of the flow straightening plate is located at a position closer to the water flow hole side than a groove bottom of the water flow groove. .