JPH0427435B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a valve opening/closing device using water pressure, which uses water pressure in a water flow pipe to open and close a valve in the pipe.

[Conventional technology]

Conventionally, as seen in Japanese Utility Model Publication No. 48-30975, the opening and closing of the valve body of a valve installed in a pipe to which constant water pressure is applied has been done manually, hydraulically, or electrically. All of them are operated by power, in which a water flow with a constant water pressure is branched from the pipe and guided to the actuator, which rotates the actuator and opens and closes the valve body. None of them said that they could be opened and closed by rotating them.

[Problem that the invention seeks to solve]

With such a structure, manual valve opening/closing operations are difficult and easy to make mistakes, while hydraulic or electric valves are expensive to drive and control, and
There were also problems in that the structure became complicated and large.

[Means for solving problems]

The present invention solves this problem and makes it possible to save energy and reduce costs, as well as to open and close the valve efficiently.Therefore, a directional control valve is installed in the pipe communicating with the pipe. At the same time, an actuator driven by the water flow is interposed on the lower side of the water flow of the directional switching valve, and the actuator is transmission-coupled so that the valve can be opened and closed.

[Effect]

Therefore, the actuator can be driven forward and backward while changing the direction of the water flow from inside the pipe to the pipe using the directional control valve, and by operating the actuator, it is possible to open and close the valve using water pressure. Become.

〔Example〕

Next, the embodiment shown in the drawings will be described. 1
is a valve box in a pipe 1a through which water flows at a constant pressure, and a valve 2, which is a butterfly-type water control valve, is installed in the valve box 1 so that it can be opened and closed by a valve rod 3, and has a conventional structure. It is configured similarly.

An intake port 4 is formed in the inner peripheral part of the valve box 1 which is on the upper side of the water flow than the valve 2, and both pipes 6 and 7 are respectively extended in opposite directions from the terminal end of the pipe 5 extending from the intake port 4. However, a lever 1 is installed at both intersections of the pipe 10 where the pipes 6 and 7 communicate with each other.
Three-way bidirectional switching valves 8 and 9 which can be rotated by 8 and 18 are interposed, respectively, and
Pipes 13 and 14 respectively extending from both ends of the exhaust pipe 15 are connected to a discharge pipe 15, and the discharge port of the discharge pipe 15 is installed so as to look into the exhaust groove A.

In addition, the pipe 1 which is between the two-way switching valves 8 and 9
A curved rectifying plate 11 is formed in a bulging shape in the middle part of the rectifying plate 11, and a waterwheel-shaped actuator 12 that rotates forward and reverse depending on the direction of water flow is rotatably mounted on the inside of the rectifying plate 11. The rotary shaft of the actuator 12 is transmission connected to a speed reducer 16, and the valve rod 3 is installed so as to be able to drive the valve rod 3 in forward and reverse rotations by the speed reducer 17, which is connected through the speed reducer 16.

Therefore, when water is flowing in the pipe line 1a at a constant pressure as shown by arrow A, the lever 1 is
When the two-way switching valves 8 and 9 are rotated as shown in FIG. 12 will rotate in the direction of arrow B, and the decelerator 1 will rotate in the direction of arrow B.
The rotational force is decelerated through valve 2 through 6 and 17.
is rotated in one direction, and when the directional control valves 8 and 9 are rotated as shown in FIG. As shown, valve 2 rotates in the other direction while reversing, and valve 2
can be rotated around the valve stem 3 as shown by arrow D to open and close the waterway.

Note that the actuator may be configured as a hydraulic cylinder operated by water pressure, and the valve can be applied with various valve structures.

〔Effect of the invention〕

In this way, the present invention enables the actuator to be operated in forward and reverse directions or reciprocatingly by taking out a water flow with a constant water pressure from inside the pipe and guided by a directional control valve, and can be operated by power without requiring fuel or electricity. The valve can be opened and closed easily, the structure does not become complicated or large, and the cost can be reduced and the valve can be operated reliably with power, resulting in a simple structure. It has the feature that it can be carried out suitably.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the main part of an embodiment of the present invention.
Figure 2 shows the valve in the pipeline, Figure 3 is a side view of a part of Figure 1, Figure 4 is an explanatory diagram of the main part, Figure 5 is an explanatory diagram of the operation of Figure 4, and Figure 6 is an illustration of the operation of Figure 4. The figure shows an explanatory diagram of the stopped state. 1a... Pipe line, 2... Valve, 5, 6, 7, 1
0, 13, 14... Piping, 8, 9... Directional switching valve, 12... Actuator.

Claims (1)

[Claims] 1 A valve mechanism that can open and close a valve 2 with a valve stem 3 is installed in the pipe line 1a where a certain water pressure is applied, and an intake is installed in the inner peripheral part of the valve box 1 which is on the upper side of the water flow than the valve 2. 4, a pipe 5 extends from the intake port 4, and from the terminal end of the pipe 5, both pipes 6, 7 are branched and extended in left and right opposite directions, and both pipes 6, 7 communicate with each other. Two-way switching valves 8 and 9 in three directions, which can be rotated by levers 18 and 18, are provided at the intersection of the pipes 10, and the pipe 10 is installed at an intermediate position between the two-way switching valves 8 and 9.
A rectifying plate 11 is formed in a bulging manner in the middle part of the rectifying plate 11, and a water wheel type actuator 12 which rotates forward and backward depending on the direction of the water flow is rotatably mounted on the inside of the rectifying plate 11, and the actuator 12 The rotating shaft 16 is configured to be transmission-connected to a reducer 17 connected to the valve stem 3 of the valve 2, and further, the pipes 13 and 14 extending to the two-way switching valves 8 and 9 are connected to the discharge pipe 15. A valve opening/closing device that utilizes water pressure and is configured to do so.