JPS5824666A - Fluid pressure response device - Google Patents

Abstract

PURPOSE:To prevent the corrosion of the parts of a fluid pressure response device in which an actuator is moved in or out in response to the stoppage of the pressure conveyance of a fluid, by using an invertible curved disc to separate a high and a low pressure chambers from each other to prevent the fluid from staying in the low pressure chamber. CONSTITUTION:When water does not flow in a passage 10, the water pressure in a high pressure chamber 1 is equal to that in a low pressure chamber so that a disc 4 is curved toward the high pressure chamber by the force of a spring 9 and both the chambers are communicated with each other through a hole 3. When water flows in the passage 10, some of water in the high pressure chamber 1 enters into the low pressure chamber 2 through the hole 3 and then into a venturi part 12 through a conduction hole 13. When more than a prescribed rate of water flows into the passage 10, the disc 4 is inverted toward the low pressure chamber 2 so that an actuator 11 is protruded outwards to operate a switch or the like. At that time, the hole 3 is closed by a seat 7 to increase the force of the disc 4 acting to a valve element 6, to cause the valve element to surely work on the actuator 11.

Description

[Detailed description of the invention] TECHNICAL FIELD The present invention relates to fluid pressure responsive devices.

In a legal body pressure response device configured so that an actuator moves in and out when fluid pressure is stopped.

In the past, a rubber diaphragm was generally used as a means of separating the high-pressure chamber and the low-pressure chamber, but in this case, the fluid in the low-pressure chamber could not be replaced with new fluid other than by breathing from a pressure conduit, etc. This often resulted in problems such as deterioration of the fluid due to stagnation and corrosion of parts on the low-pressure chamber side. Furthermore, when removing fluid from the inside of the device, it is extremely difficult and rare to completely remove the fluid from the low pressure chamber side. Furthermore, since a rubber diaphragm was used, there was a problem in terms of service life.The present invention solves this problem, and the fluid pressure on the high-pressure chamber side is low, and the differential pressure between the high-pressure chamber and the low-pressure chamber is small. When removing fluid from inside the tank, the high-pressure chamber and low-pressure chamber are communicated, and the fluid in the low-pressure chamber is exchanged by flowing fluid from the high-pressure chamber to the low-pressure chamber. It is an object of the present invention to provide a fluid pressure response device that can completely remove fluid in a room.

In order to achieve the object of the present invention, a high pressure chamber and a low pressure chamber are separated by a reversible curved disk, a hole is provided in the center of the wrinkled disk, and an actuator is placed opposite the hole on the low pressure chamber side. A spring is provided that presses the disk toward the valve disk, and when the differential pressure between the high pressure chamber and the low pressure chamber is low or nonexistent, the disk moves toward the high pressure chamber. The disk is maintained in a curved state, and as a result, the hole is opened and the high pressure chamber and the low pressure chamber communicate through the hole, and when the differential pressure between the high pressure chamber and the low pressure chamber exceeds a certain level, the disk moves toward the low pressure chamber. The valve body is inverted into a curved shape 11 so that the hole is closed by a valve body.

An embodiment of the present invention will be described below based on the drawings. This embodiment is a hydraulic response device installed in a water flow path, and includes a high pressure chamber (1) communicating with the water flow path and a low pressure that becomes lower in a certain relationship with respect to the high pressure chamber (1). It has a room,
There is a hole (
It is partitioned by a disc (4) having a diameter of 3), and watertightly divided by nine O-rings (5a) and (5b) arranged on both sides of its outer circumference. The disk (4) is formed into a curved surface that can be reversed between a state in which it protrudes toward the high pressure chamber (1) side and a state in which it protrudes toward the low pressure chamber (1) side, and is made of a metal plate or a resin plate. It is configured. A valve body (6) is arranged on the low pressure chamber (j side of the disk (4), facing the hole (chrysanthemum), and the wrinkled valve body (6) is arranged so that the disk (4) is connected to the high pressure chamber (j). 1) When it is in contact with the disc (4) in a curved state, a gap is created between the valve seat part (η) and the surrounding wall surface of the hole (3), and the high pressure chamber (1) and the low pressure chamber (2) is in communication with the disk (4), and the disk (4) is curved into the low pressure chamber (2).
When K is in contact with the valve seat part (my hole (3)
It has a shape and structure such that the hole (3) is closed by pressing against the surrounding wall surface of the hole (3). That is, as shown in FIG. 1, for example, a plurality of legs (8) are provided around the valve seat part (7) protruding from the main body part (6a) that supports the valve seat part (7) made of an elastic material. However, the tip thereof and the end surface of the valve seat portion (7) are configured to be located on the same y plane. The valve body (6) is biased toward the disk (4) by a spring ($1), and the disk (4) protrudes 1 m into the high pressure chamber (1) via the skeleton valve body (6). It is urged to do so.

In addition, low pressure is applied to the valve body (6)! (2) that protrudes outside through the venturi portion (2) is a venturi portion formed in the flow path at a downstream position of the high pressure chamber (1), and the venturi portion (b) and the low pressure chamber (2) are in communication with each other through the through hole, and
As a result, as mentioned above, the pressure in the low pressure chamber (2) becomes low in a constant relationship with the pressure in the high pressure chamber (1).

H is a main body that forms a high pressure chamber (1) together with the disk (4); 111 is a cap that forms a low pressure chamber (2) together with the disk (4); a drain plug provided at the lower end of the asFi main body A4; The part is the O-ring that seals the cap (actuator (b) of I@) and the main body part (4) of the conduction hole
and the cap τilG to seal the joint.

Next, to explain the operation, when water does not flow through the flow path,
Since the water pressures in the high pressure chamber (1) and the low pressure chamber (z) are equal.

The disk (4) is bent toward the spring (high pressure chamber 1) by the secondary biasing force and maintained in that state, so that the hole (3)
The high pressure chamber (1) and the low pressure chamber (2) are in communication with each other via the high pressure chamber (1) and the low pressure chamber (2).

Next, if a small amount of water flows into the flow path, there will be a slight pressure drop caused by the venturi part (b) and the disc (
14) is also very small and the disc (4) does not move, passing from the high pressure chamber (1) through the hole (3) to the low pressure chamber (2>), and then through the conduction hole (to) the venturi section (rotation). ) Some of the water flows into the chamber ( ).Then, if water flows in the flow path at a flow rate greater than the - chamber, the pressure difference between the high pressure chamber (1) and the low pressure chamber (2) will become circular. (4) becomes larger than the sum of the force that reverses the curvature of the disc (4), the biasing force of the screw ('a), and the force required to move the actuator (b). 4) is reversed to the low pressure chamber (2) side, and as a result, the actuator (2) protrudes, and this actuator (b) opens and closes the two-way valve 0 and 7''). However, at this time, since the valve seat part (7) closes the hole (3), the force exerted by the disk (4) on the valve body (+1) becomes even stronger, and the force exerted on the actuator (B) of the valve body (6) becomes even stronger. On the other hand, if the flow rate in the flow path decreases, the differential pressure will decrease due to the biasing force of the spring (Il). The disk (4) is again inverted into the hyperbaric chamber (1)@.

When draining water, open the drain plug with sand on the high pressure chamber (1) side, and the water from the high pressure chamber (1) as well as the low pressure chamber (7) will flow through the hole (3) of the disc (4). You can drain it to the last drop.

In addition, since the disc (4) is only turned over, it is not easily damaged, and in particular, if it is made of metal, it has far superior durability compared to conventional rubber diaphragms.

According to the fluid pressure response device of the present invention, as is clear from the above description, the high pressure chamber and the low pressure chamber are separated by a reversible, bay-shaped disk having a hole in the center, and the hole is A valve body is provided that opens when the disk curves toward the high pressure chamber and closes when it curves toward the low pressure chamber, so fluid is exchanged without stagnation in the low pressure chamber, and the fluid inside the low pressure chamber (2) is replaced. It is possible to prevent deterioration of the fluid and corrosion of the parts in the low pressure chamber, and also to ensure that all the water in the low pressure chamber is removed when the fluid is removed from the device.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view of the disc curved toward the high-pressure chamber, and a longitudinal cross-sectional view of the second-opening disc curved toward the low-pressure chamber. . (1)...High pressure chamber, (2)...Low pressure chamber, (3)...
- Hole, (4)...disc. (6)... Valve body, (7)... Valve seat part, (8)...
...Leg, (9)...Spring. Flow path, (b) Actuator, (2)
...Venturi section, 9 匈...Drain tap agent Screenplay Yoshihiro No. f Fig. f Fig. 2 f/

Claims (1)

[Claims] 1. Separate the high-pressure chamber and the low-pressure chamber with a reversible curved disk, make a hole in the center of the scissor disk, open the hole with the disk curved toward the high-pressure chamber, and create a low-pressure chamber. A valve body is disposed in the low pressure chamber facing the front hole so as to be curved in the shape of 11 and close the hole in a good condition, and a spring is provided to press the valve body toward the disk, and the valve body A fluid pressure response device characterized by having seven cutuators connected to each other.