JPS6037501Y2 - Automatic opening/closing valve device for water supply - Google Patents

Description

[Detailed description of the invention] This invention is an automatic opening/closing system for water supply that can automatically stop the water supply to the water discharge side passage by automatically operating the valve device when the water pressure in the water discharge side passage increases abnormally during water flow. Regarding a valve device.

For example, by fitting a hose to a water faucet using its elasticity,
When discharging water from the free end of a hose, if the hose side is blocked for some reason and the water discharging is interrupted, the continued water supplied will create excessive water pressure inside the hose, which may cause the hose to break or cause the hose to be disconnected from the faucet. This often happens.

This invention aims to eliminate the occurrence of such accidents and provide an automatic opening/closing valve device for safe use of hoses.This invention is applicable not only to water faucets but also to general water pipes and water discharge pipes. It is also possible to apply it to an automatic opening/closing valve device that can be used effectively even when installed.

The present invention will be explained below with reference to the illustrated embodiment.There are connecting ports 2 and 3 at both ends which can be connected to the woodwind '19'' 2.
A valve cylinder 1 is formed, and the inside is partitioned into two chambers, a valve chamber 5 and a water discharge chamber 6, through a valve seat 4, and a side part of the valve cylinder 1 communicates with the water discharge chamber 6 side. Working chambers 8 are connected through the holes 12, and the working chambers 8 accommodate the working body 7 which is placed under the action of a spring 7b and is operated by a change in water pressure on the water outlet chamber 6 side. The tip of the push rod 9 attached to the body 7 protrudes into the valve chamber 5 so as to press the body valve 10 that is removably housed in the valve chamber 5, and
0, when the pressure by the push rod 9 is released, the spring 11 acts to move the body valve 10 toward the valve hole 4a so that the body valve 10 can close the valve hole 4a formed in the valve seat 4. This invention relates to an automatic opening/closing valve device for water supply, which is characterized in that it is placed under bias.

In the above configuration, one of the water pipes is shown as a water supply faucet in the drawing, but it may be a water supply hose.

The actuating body 7 has a piston structure or a bellows structure,
When the water pressure rises above the set value on the water pipe island side, the operating plate 7
It is only necessary that a can exhibit the function of being pressed against the coil spring 7b.

According to the above configuration, the body valve 10 is attached to the push rod 9 as shown in the figure.
Since the valve hole 4a is normally open, the wood pipe t2 communicates with the water pipe t2 through the valve hole 4a, and water flows through the water pipe t.
Water flows from □ to the water pipe t2 side, and water can be discharged from the tip of the water pipe t2.

If the water pipe t2 side is blocked during this water flow, the water pressure inside the wood pipe will rise abnormally due to the water flow from the water pipe t1 side, and the amount of water entering the working chamber 8 from the communication hole 12 will increase, causing the working body 7 is operated by water pressure.

In the illustrated case, the actuating body 7a retreats against the coil spring 7b as shown by the imaginary line in the figure, and the body valve 10 is pushed back by the push rod 9.
When the pressure is released, the body valve 10 moves above the valve hole 4a by the water pressure from the water pipe t□ side and the spring 11, closes the valve hole 4a, and blocks water flow to the water pipe cherry side.

When the blockage on the water pipe t2 side is released and water can be discharged, and the water pressure returns to normal, the movable members including the aforementioned body valve 10 return to the state shown by the solid line in the figure, and the valve hole 4
a is opened and water can pass through.

In this case, the present device is particularly configured so that when the body valve 10 is placed under the bias of the spring 11 and the body valve 10 is released from the pressure of the push rod 9, the body valve 10 can be fixed in the valve hole 4a. Therefore, when the water pressure on the water outlet chamber 6 side suddenly increases, the closing action on the valve hole 4a is reliably performed, and the body valve 10
is fixed on the valve hole 4a, and there is no risk of vibration or other undue movement.

In this way, according to this device, it is possible to prevent the maximum impact caused by the sudden water pressure change in the water pipe t2 on the water discharge side, the so-called water hammer phenomenon, at the beginning.For example, when using a rubber hose, the rubber hose This completely prevents the rubber hose from breaking or falling off from the water supply connection of the water faucet.

In addition, in the figure, 13 is a vent hole drilled in the working chamber 8, 14 is a gasket fitted into the valve hole 4a, 15 is a worn O-ring on the push rod 9, and 16 is a screw for mounting the valve cylinder 1. .

Further, one end of the spring 11 is fitted into a shoulder 17a formed at the lower part of a water passage hole 17 connected to the valve chamber 5, and the other end is pressed against the body valve 10, and the valve seat 4 is directed toward the valve hole 4a. to form an inclined surface.

The present invention is as described above, and the operating body quickly responds to changes in water pressure in the water pipe on the water discharge side, and the body valve reliably opens and closes the valve hole, ensuring safety during water flow. It is extremely effective.

In addition, in the present invention, since the body valve is biased by a spring in the direction in which it can be closed toward the valve hole, the body valve will not be unduly vibrated due to the pulsation of flowing water that occurs when there is a sudden change in water pressure, and the valve hole will not be unduly vibrated. This has the advantage that the fixation of the body valve during occlusion is significantly improved, and the occlusion action is performed correctly and smoothly in conjunction with the guiding action of the spring.

[Brief explanation of drawings]

The drawing is a side sectional view showing an embodiment of the present invention. In the figure, 1 is a valve cylinder, 2 and 3 are connection ports, 4 is a valve seat, 4a is a valve hole, 5 is a valve chamber, 6 is a water outlet chamber, 7 is an operating body, 7b is a spring,
8 is an operating body, 9 is a push rod, 10 is a body valve, and 11 is a spring.

Claims (1)

[Scope of utility model registration request] A valve cylinder is formed with a connection port for connecting a wood pipe at both ends, and the inside is partitioned into two chambers, a valve chamber and a water discharge chamber, through a valve seat, and a water discharge chamber side is formed on the side of the valve cylinder. An operating chamber is connected to the operating chamber through a communication hole, and this operating chamber houses an operating body that is placed under the action of a spring and is actuated by a change in water pressure in the water outlet chamber, and a pusher attached to the operating body. The tip of the rod protrudes into the valve chamber so as to be able to press the body valve that is removably housed in the valve chamber, and when the pressure of the body valve is released from the body valve, the body valve is pushed against the valve seat. An automatic on-off valve device for water supply, characterized in that the body valve is placed under a spring force acting toward the valve hole so as to close the valve hole formed in the valve hole.