JPS5836227B2 - flash valve - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in flash valves.

Conventional flush valves continue discharging water as long as the push rod is pressed, so they have the disadvantage that a large amount of water can be wasted depending on how the user operates the valve.

The present invention solves the above-mentioned drawbacks, and is capable of discharging a fixed amount of water to complete one operation regardless of the length of time the push rod is pressed. The purpose is to provide a time-stable flash bulb.

An example of implementation will be described below based on the drawings.

In the figure, 1 is the flush valve body, 2 is its inlet, and 3
is an outflow port, and these two ports 2 and 3 communicate through the main valve seat 4.

Further, 5 is an opening opened opposite to the main valve seat 4, this opening 5 is closed by a lid 6, and an adjustment screw 7 is provided in the center of the lid 6.

Reference numeral 8 denotes a response part, which is a piston here, and has a main valve body 9 projecting like a flange on its outer periphery, and a guide vane piece 1 on its lower part.
0, and the piston 8 has an upper portion disposed on the inner circumferential surface of the lid 6 and a guide vane piece 10 slidably on the inner circumference of the main valve seat 4 to form a pressure chamber 11 behind the piston 8. together with the main valve body 9
corresponds to the main valve seat 4 to constitute the main valve A.

Further, the piston 8 is connected to a pressure chamber 11 via a relief valve seat 12.
and the inlet 2 through the through hole 13 provided at the bottom.
A relief valve body chamber 14 that communicates with the side, a relief valve chamber 17 that communicates with the pressure chamber 11 via the passage 15 and with the outlet 3 side via the relief valve seat 16, and a direct pressure chamber 11 with the inlet 2. A small hole 20 is provided to communicate with the side, a relief valve body 18 forming the relief valve B is provided in the relief valve chamber 14 corresponding to the relief valve seat 12, and a relief valve seat 16 is provided in the relief valve chamber 17. The IJ that constitutes the relief valve C corresponding to
IJ-F valve bodies 19 are respectively provided.

The relief valve body 18 connects the valve shaft 21 provided on the upper surface with the relief valve seat 1.
2 and facing the pressure chamber 11 side to open the relief valve body housing chamber 1.
4 and is adapted to ride on a step provided slightly above the opening of the through hole 13.

The opening timing of this relief valve is determined by the adjustment screw 7 of the lid 6, and the stroke of the piston 8 is thereby adjusted, thereby adjusting the opening time of the main valve.

The adjustment screw 7 also serves as a stopper for the piston 8.

The relief valve body 19 is integrally provided with a cylindrical rod guide 22 on the lower surface, and a rod 2 is attached to the rod guide 22.
3 is slidably and cannot be removed, and the relief valve chamber 17 is installed so that the rod guide 22 and the rod 23 loosely fit through the relief valve seat 16 and extend toward the outflow port 3 side.
The relief valve seat 16 is always provided with a spring 24.
oppressed by the side.

Reference numeral 25 is a push rod which is supported in a reciprocating manner by a support member 26, the tip of which faces the lower side surface of the rod 23, and the base end which is pressed by a spring 27 and elastically communicates with the starting handle 28. When pressed, it moves forward against the spring 27, and when released, it returns to its original position due to the elastic force of the spring 27.

As shown in FIG. 1, in the flash valve of the present invention constructed in this way, normally the main valve body 9 is pressed against the main valve seat 4 to shut off the inlet 2 and the outlet 3, and the relief valve body 19 is pressed against the relief valve seat 16 by the spring 24, thereby blocking the pressure chamber 11 and the outlet 3, and the relief valve body 18 sinks into the relief valve body housing chamber 14 due to its own weight.

Now, when the start handle 28 is operated and the push rod 25 is pushed, the push rod 25 moves forward, and through the rod 23 and the rod guide 22, the relief valve rest 19 is tilted against the spring 24 and released from the relief valve seat 16. IJ IJ-Open valve C.

Therefore, the water in the pressure chamber 11, passage 15, IJ leaf valve chamber 17 is released to the outlet 3, and when the pressure in the pressure chamber 11 becomes lower than the pressure of the water in the inlet 2, the piston 8 rises and the main The valve body 9 separates from the main valve seat 4, the main valve A opens, and water begins to flow from the inlet 2 to the outlet 3.

At this time, the relief valve body 18 is pushed up by the water pressure and pressed against the relief valve seat 12, thereby closing the relief valve B.

(Figure 3) As the piston 8 continues to rise, the rod 23 is pulled up and rides on the push rod 25, and when the rod guide 22 and rod 23 are able to slide freely, the relief valve body 19 is moved to the relief valve seat by the spring 24. 16
is pressed, and the IJ IJ-F valve C closes.

On the other hand, just before the relief valve C closes, the valve shaft 21 of the relief valve body 18 hits the lower end of the adjustment screw 7 of the lid 6, and the relief valve B begins to open.

Since the piston 8 tends to continue rising due to inertia, the water remaining in the pressure chamber 11 is compressed.

Therefore, the piston 8 will not be able to rise completely unless this compressed water is released.

The relief valve B is for solving the problem that the piston 8 is unable to rise completely, and allows the compressed water in the pressure chamber 11 to pass through the relief valve B, the relief valve storage chamber 14, and the through hole 13. The water is drained to the inlet 2 side and discharged into the flowing water on the inlet 2 side where the pressure is decreasing.

Therefore, the piston 8 can continue to rise, and the rod 2
3 is further pulled up and away from the push rod (Figure 4).

Since the piston 8 starts to descend after rising completely, the pressure inside the pressure chamber 11 becomes negative, and since the relief valve B is open, water from the inlet port 2 side instantly flows into the pressure chamber 11 through the relief valve B. , the piston 8 descends.

At the same time, water from the inlet 2 flows into the pressure chamber 11 in very small amounts through the small hole 20.

When the valve shaft 21 of the relief valve body 18 comes out of contact with the adjustment screw 7 of the lid 6, the relief valve body 18 is pushed up by the water pressure, so the relief valve B is completely closed and from now on, only the small hole 20 is accessed from the pressure chamber. The piston 8 slowly descends in response to a small amount of water entering the piston 11.

On the other hand, as the piston 8 descends, the rod 23
However, since the rod guide 22 slides on the rod 23, it descends together with the piston 8 to keep the IJ-F valve C closed (FIG. 5).

The water in the inlet 2 continues to flow into the pressure chamber 11 little by little through the J-TL 20, so the piston 8 continues to slowly descend, and finally the main valve A closes to stop the water flow. Stop.

At this time, the relief valve body 18 sinks into the relief valve housing chamber 14 due to its own weight, and even if the push rod 25 remains pressed, the flush valve completes one operation (FIG. 6).

Even if the rear push rod 25 is moved back, the rod 23 will only be lowered and there will be no operational change, and the state will return to the state shown in FIG. 1.

In the above embodiment, the relief valve body 18 is made of a relatively heavy material, so when the main valve A is closed (FIGS. 1 and 6), the relief valve body 18 is lowered. Although the relief valve B is in an open state, the present invention is not limited to this. The relief valve body 18 is a light object, and when the main valve A is closed, the relief valve body 18 is in an open state. Rise and release valve B
Even if it is closed, it does not depart from the gist of the present invention.

Since the present invention is configured as described above, the flush valve can discharge a certain amount of water to complete the operation even if the push rod is kept pressed, and water is not wasted. Its practical effects are extremely significant, especially today when the lack of resources is becoming a major social problem, as it can prevent water damage and save water.

Furthermore, by being equipped with a relief valve that releases the water in the pressure chamber, the water in the pressure chamber can be well discharged when the relief valve is closed, and the X-responsive part can be raised to the maximum extent, allowing the rod to be pulled up high.

Therefore, the IJ-IJ-F valve is reliably closed, and as a result, the flash valve is reliably operated.

In addition, since the mechanism that communicates the pressure chamber and the primary side is /''-fL, the precision of this mechanism can be achieved with simple machining, and stable water discharge amount and water discharge time can be obtained.

Furthermore, since the pressure chamber is always communicated with the inlet side through the small hole, dirt and dead water are unlikely to accumulate in the pressure chamber even if the pressure chamber is not used for a long period of time.

[Brief explanation of drawings]

The drawings show one embodiment of the flash valve of the present invention, and FIGS. 1 and 3 to 6 are longitudinal cross-sectional views showing the operating states in order, and FIG. 2 is a view taken along the line XX in FIG. 1. FIG. 1...Flash bulb body, 2...
Inflow port, 3...Outlet port, 4...Main valve seat, 8...Response part, 9...Main valve body, 11
... Pressure chamber, 12 ... Relief valve seat, 16
......IJ IJ-F valve seat, 18...Relief valve body, 19...Relief valve body, 20...
...Small hole, 22... Rod guide, 23...
...Rod, 25...Push rod, A...
Main valve, B...Relief valve, C...IJ I
J-fu valve.

Claims (1)

[Claims] 1 IJ consisting of a relief valve seat and a corresponding relief valve body in the response part equipped with a main valve body that corresponds to the main valve seat provided in the main valve body and constitutes the main valve. IJ one valve and relief valve. Equipped with a relief valve consisting of a seat and a corresponding relief valve body, the pressure chamber formed behind the response part is transferred to the outlet side of the flush valve body via the relief valve and to the inlet side via the relief valve. A small hole is separately provided in the response part to allow the pressure chamber to communicate with the inlet side at all times, and the relief valve has a rod guide integrally provided with the relief valve body so that the rod can slide freely into the relief valve. The relief valve is opened by tilting the relief valve body through the iron with the push rod. A flush valve characterized by allowing compressed water inside the room to escape to the inlet side.