JPS6024131Y2 - Semi-automatic water supply device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a semi-automatic water supply device in which water supply is started manually and water supply is automatically stopped when the water level on the rice field rises to a predetermined position.

BACKGROUND ART Conventionally, as this type of water supply device, one is known in which a water tap and a water level setter are connected through a conduit, and the opening and closing operations of the water tap are fully automatically controlled by the water level setting device.

However, this fully automatic water supply system is prone to malfunctions due to the complicated structure and operating mechanism of the water level setting device, and is also expensive, so the number of units installed is limited, and the number of units installed is limited. The drawback was that it was not possible to set the water level in detail.

The present invention eliminates the drawbacks of such conventional devices, and consists of a configuration in which a water tap and a water level setting device are connected by a conduit, and in particular, by making the water supply start operation manual,
To provide a semi-automatic water supply device that has a simplified structure and operating mechanism of a water level setting device, which makes it easy to handle, and eliminates malfunctions in cooperation with a water faucet.

Hereinafter, the specific configuration of the present invention will be explained in detail with reference to the drawings.

The drawing is a schematic sectional view of a semi-automatic water supply device showing an embodiment of the present invention, in which symbol A indicates a water tap, B indicates a water level setting device,
C is a conduit that connects the water tap A and the water level setting device B.

The water faucet A includes a valve body 1 having a valve seat 12 on the upper part, a diaphragm valve 3 fixed to the upper part of the valve body 1 and coming into contact with and separating from the valve seat 12, and a pressure chamber 2 that covers the diaphragm valve 3.
3 is provided with an integral cover 2.

11 is a water supply outlet. The diaphragm valve 3 is made of an elastic member such as rubber, and has a disk plate 32 fixed to its upper surface.

A through hole 31 that communicates from the valve body 1 to the pressure chamber 23 is bored approximately in the center of the disk plate 32.
A conduit C is connected to the upper part of the cover assembly 2 constituting the cover 3 through a cock 21.

The cock 21 is used when stopping the water supply by manual operation, and is normally set in an open state.

As shown in the drawing, the area of the upper surface of the diaphragm valve 3 constituting the pressure chamber 23 is larger than the area of the opening of the valve seat 12, and by moving the diaphragm valve 3 up and down based on this area difference, The opening/closing operation of the water tap A is performed.

That is, when the other end of the conduit C is closed, the water supply flows into the pressure chamber 23 through the through hole 31, and this back pressure acts on the upper surface of the diaphragm valve 3, causing the lower surface of the diaphragm valve 3 to close. It comes into pressure contact with the seat 12 and water supply stops.

Conversely, when the other end of the conduit C is open, no back pressure acts on the upper surface of the diaphragm valve 3, and the diaphragm valve 3 is pushed up by the water pressure acting on its lower surface, causing the discharge port 11 to rise. Water supply is released from.

On the other hand, the water level setting device B is used to open and close the water tap A, and includes a device body 4 having a built-in spherical valve 5 and an operating pin 6 linked to a cam rod 7.

The main body 4 includes a valve chamber 41.
A spherical valve 5 made of metal, plastic, etc. whose specific gravity is larger than that of water is built into the valve 1 and is movable vertically and horizontally.

A conduit C is connected to the upper part of the valve chamber 41, and a drain port 42 open to the atmosphere is provided below the conduit C.

Further, an operating pin 6 is provided on the side wall of the main body 4 and is movable back and forth within the valve chamber 41. The operating pin 6 is provided with a spring 61 for retracting the operating pin 6 from the valve chamber 41.

On the other hand, the cam rod 7 is rotatably connected to the lower part of the operating pin 6, and a pressing blade of a spring 71 acts on one end of the cam rod 7, and a float is connected to the other end via a chain, string, etc. ing.

The float 8 is housed in a cylindrical body 9 so as not to be affected by ripples generated on the water surface, and the cylindrical body 9 is provided with a number of through holes 91 so that water can enter and exit.

Further, a cam portion 72 is provided at the upper portion to which the cam rod 7 is connected with a pin.
is provided, and when the other end of the cam rod 7 (the side connected to the float 8) is lowered, the cam portion 72 fits into the groove 62 provided in the operation pin 6, and conversely, the other end (the side to which the float 8 is connected) is lowered. It is configured to separate from this groove 62 when the end rises to a certain extent.

The water level setter B is operated by a pressing blade of a spring 71 acting on one end of the cam rod 7 and the floating and lowering of a float 8 connected to the other end. When the weight of the float 8 is not acting on the end, the other end of the cam rod 7 can be lifted upward, and when the weight of the float 8 is acting on the end, the other end of the cam rod 7 can be lowered by the spring elastic force. It is important to provide the following.

The semi-automatic water supply device of the present invention has the above configuration, and the operation of this water supply device will be explained next.

The solid line in the drawing shows a state in which the water level on the rice field has risen and water supply has been completed, and the float 8 floats up, the other end of the cam rod 7 springs upward, and the cam part 72 moves into the groove 62 of the operating pin 6.
The operating pin 6 moves back and the spherical valve 5 opens the discharge port 4.
2 is blocked.

Therefore, the internal pressure in the pressure chamber 23 connected to the conduit C increases, and this back pressure causes the diaphragm valve 3 to come into pressure contact with the valve seat 12, thereby closing the water tap A.

When the water level on the rice field falls from this state as shown by the two-dot chain line, the cam rod 7 cannot rotate clockwise in the drawing because the cam portion 72 is in pressure contact with the lower part of the operating pin 6 which has retreated.

Therefore, the float 8 remains suspended from the other end of the cam rod 7 and does not descend, and the spherical valve 5 still blocks the drain port 42.

Therefore, water supply is started manually.

When the operation pin 6 is pressed, the forward end of the operation pin 6 moves the spherical valve 5 to open the drain port 42, and at the same time, the cam portion 72 fits into the groove 62 and the other end of the cam rod 7 opens. is lowered by the weight of the float 8.

When the drain port 42 of the water level setting device B opens, the internal pressure in the pressure chamber 23 of the hydrant A connected to the conduit C decreases, and the diaphragm valve 3 rises as shown by the two-dot chain line in the figure to start water supply. be done.

Then, when water is continuously supplied to the rice field, the water level rises and the float 8 floats along with this.

When the float 8 floats up, the chain, string, etc. connected to the other end of the cam rod 7 momentarily slackens, and the float 8 is attached to the other end of the cam rod 7.
Since the weight of the cam rod 7 is no longer applied to the cam rod 7, the other end of the cam rod 7 is sprung up as quickly as possible by the push-down blade of the spring 71 acting on one end of the cam rod 7.

When the float 8 floats up to a predetermined water level and the other end of the cam rod 7 completely springs up, the cam portion 72 moves into the groove of the operating pin 6.
Escape from 2.

As a result, the operating pin 6 is pushed back by the spring 61, and
The spherical valve 5 closes the drain port 42 and the water tap A is closed.

As detailed above, in the water supply device of the present invention, water supply is started manually and stopped automatically, so that the structure and operating mechanism of the water level setter can be particularly simplified.

As a result, the water supply device is easier to handle, and there is no malfunction in coordination with the hydrant, allowing accurate water level setting.
It is now possible to effectively use water in the reservoir.

On the other hand, water faucets are opened and closed by moving the diaphragm valve up and down.
Since it has a closed structure, even if water hammer pressure is generated in the pipeline connected to the valve body, this water hammer pressure can be alleviated by moving the diaphragm valve upward, thereby preventing damage to the pipeline. Now I can do it.

Furthermore, the water supply device of the present invention has a simplified structure and operating mechanism, so it can be provided at a lower cost than conventional fully automatic water supply devices.

For this reason, by installing a number of water supply devices depending on the size of the rice field, it becomes possible to set the water level in a precise manner, which, together with preventing device malfunctions, streamlines water management. Became.

[Brief explanation of drawings]

The top view is a schematic sectional view of a semi-automatic water supply device showing an embodiment of the present invention. A... Water tap, B... Water level setting device, C
... Conduit, 1 ... Valve body, 11 ...
...Discharge port, 12... Valve seat, 2...
Cover integrated, 23...Pressure chamber, 3...Diaphragm valve, 31...Through hole, 4...
Device body, 5... Spherical valve, 6... Operation pin, 61... Spring, 62... Groove, 7.
...Cam rod, 71...Spring, 72...
...Cam part, 8...Float.

Claims (1)

[Scope of utility model registration request] The hydrant A is composed of a hydrant A connected to a water supply source, and a water level setter B to which the hydrant A is connected via a conduit C. A diaphragm valve 3 that is fixed and comes into contact with and separates from the valve seat 12, and a cover unit 2 that covers the diaphragm valve 3 and forms a pressure chamber 23, and the diaphragm valve 3 has a valve body 1 and a pressure chamber 2.
3, and the conduit C is connected to the cover integral 2, while the water level setting device B is connected to the conduit C.
A vessel body 4 connected to the vessel body 4, and a spherical valve 5 built into the vessel body 4.
A cam rod 7 has a spring 71 acting on one end connected to the operation pin 6 and a float 8 connected to the other end.
The floating spring 71 presses one end of the cam rod 7, the other end springs up, and the connection with the operation pin 6 is released, and the spring 6
The operating pin 6 that was pressed in
A semi-automatic water supply device configured to close a drain port 42 that communicates with the drain port 42.