JPH081344Y2 - Float valve mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an improvement of a float valve mechanism, mainly for agricultural water.

[Background of the Invention] Generally, the fields are divided and each farm has its own ownership, and there is a difference of several days in the start time of the work for each farm.

However, since agricultural water is pumped up and sent according to the time of the farmer who starts the work earliest, there is a disadvantage that it is supplied to the fields of farmers who have not yet started work.

[Purpose of device]

Therefore, the present invention has been made by paying attention to the above-mentioned conventional circumstances, and by solving the problem, even if the agricultural water is pumped up, the operation of the valve body is locked when not in use. It is an object of the present invention to provide a float valve mechanism that prevents water supply.

[Means for solving the problem]

To achieve this object, a float valve mechanism according to the present invention comprises a piston that moves up and down in a valve box, a valve element fixed to the lower end of the piston, and a lever that is pivotally supported below the valve element. And a float attached to the tip of the lever, a float valve mechanism is provided with an engaging portion formed at the upper end of the piston, and a stopper having a locking flange formed at the lower end is provided in the empty chamber. It is characterized in that it is inserted and an operation handle is connected to the upper end of the stopper, and a clearance is held between the engaging portion and the locking flange during operation.

[Action]

With the above configuration, when not in use, the operating handle is rotated to pull up the stopper, and the stopper flange of the stopper is brought into contact with the engaging portion of the empty chamber to move the piston, that is, the lower end thereof. By stopping the movement of the valve element fixed to the, the transmission of the driving force from the float can be interrupted and the water supply can be stopped.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing a float valve mechanism embodying the present invention. In FIG. 1, reference numeral 1 shows a valve box. This valve box 1 has discharge ports 1a and 1b formed on the left and right, and a sliding portion 1c of a piston to be described later is formed in the vertical direction. One of the discharge ports 1b is usually covered with a cap 2. There is. A valve can be optionally connected to the discharge port 1b to which the cap 2 is applied, which can be used for watering.

Further, the upper portion of the piston 3 is fitted to the sliding portion 1c of the valve box 1, and the piston 3 extends across the boundary between the discharge ports 1a and 1b and below the position of the discharge ports 1a and 1b. . A valve body 5 having a valve seat 4 made of synthetic rubber on the upper surface is fixed to the lower end of the piston 3 with a screw 6. A joint 7 is arranged immediately below the valve body 5, one end of a lever 9 is pivotally supported by a pivot pin 8 at the lower end of the joint 7, and the other end of the lever 9 is on the upper surface of the float 10. The rod 11 provided is attached. In the figure, 12 is a packing, and 12a is a spring washer interposed between the valve body 5 and the upper surface of the joint 7.

Further, a lid is attached to the upper opening of the sliding portion 1c of the valve box 1 described above.
13 is flanged, and an operating handle 14 is provided on the top of the lid 13. The upper portion of the piston 3 is fitted and inserted from the sliding portion 1c of the valve box 1 to the inside of the lid 13, and the engaging portion 3a is projected on the top surface of the fitted piston 3 upper portion. A vacant room 15 is formed. A stopper 16 having an upper end that penetrates the upper surface of the lid 13 and is connected to the center of the operation handle 14 and has a locking flange 16a at the lower end is formed in the empty chamber 15.
The clearance A is retained between the engaging flange 16a of the stopper 16 and the engaging portion 3a when the float valve is actuated.

The float valve mechanism according to the present embodiment is configured as described above, and when used, the float valve mechanism responds to changes in the water level.
10 moves up and down, and the change in position is made via lever 9
Is transmitted to That is, when the float 10 is lowered, the joint 7 is lowered by the lever principle, and the lowering of the joint 7 lowers the valve body 5 via the spring washer 12a and at the same time lowers the piston 3 to perform the opening operation. It is a thing. On the contrary, when the float 10 rises due to the change in the water level, the valve body 5 rises and closes.

Here, when not using this float valve mechanism,
The stopper 16 is pulled up by rotating the operation handle 14, the locking flange 16a of the stopper 16 is brought into contact with the engaging portion 3a, and when the stopper 16 is pulled up, the piston 3 itself also rises and the valve body 5 is raised. The closed state can be obtained by stopping the rotation of the operation handle 14, and the state can be locked in that state.

[Effect of device]

As described above, according to the float valve mechanism according to the present invention, the valve can be held in the closed state when not in use, so there is no risk of unnecessary water supply to the fields even if there is a difference in the work start date. In addition, opening and closing in the morning and evening can be easily performed.

[Brief description of drawings]

FIG. 1 is a sectional view of a float valve mechanism showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Valve box, 3 ... Piston, 3a ... Engaging part 5 ... Valve body, 9 ... Lever, 10 ... Float 13 ... Lid, 14 ... Operation handle, 15 ... Vacancy 16 ... Stopper, 16a ... Engaging flange

Claims (1)

[Scope of utility model registration request] 1. A piston that moves up and down in a valve box, a valve element fixed to the lower end of the piston, a lever pivotally supported below the valve element, and a float attached to the tip of the lever. In the float valve mechanism consisting of, a vacant chamber having an engaging portion is provided at the upper end of the piston, and a stopper having a locking flange at the lower end is inserted into the vacant chamber,
A float valve mechanism, wherein an operation handle is connected to an upper end of the stopper, and a clearance is held between the engaging portion and the locking flange during operation.