Transverse pull type three-stage flap valve and operation method thereof

Abstract

The invention belongs to the field of cut-off devices, and particularly relates to a transverse pull type three-stage flap valve and an operation method thereof. The transverse pull type three-stage flap valve comprises a water outlet pipe, a water outlet pool rear wall, a motor, a sliding rail, a flap valve, a rotating shaft, a fixing groove, a piezoelectric sensor, a gearbox and a series of rod pieces. The transverse pull type three-stage flap valve is installed at a water outlet of the round water outlet pipe and is composed of two first-stage fan-shaped flap valves, a round second-stage flap valve and a third-stage flap valve, the first-stage flap valves are installed in the second-stage flap valve through the rotating shafts, the second-stage flap valve is installed in the third-stage flap valve through rotating shafts, and the third-stage flap valve is installed on the rear wall of the water outlet pool through the series of rod pieces. According to the transverse pull type three-stage flap valve, automatic opening and closing of the flap valve are achieved mainly through operation of the motor and transmission of the series of rod pieces, graded free outflow can be achieved, it can be guaranteed that the impact force of the flap valve on the water outlet pipe is close to zero when the flap valve is closed, and then safety and stability of the water outlet pipeline are guaranteed.

Description

technical field [0001] The invention belongs to the field of intercepting devices, and in particular relates to a horizontally pulled three-stage flap door and an operating method thereof. Background technique [0002] The flap valve is a commonly used cut-off device in water conservancy projects. It is mainly used to cut off the water flow when the unit is shut down, so as to prevent the water flow from entering the unit and causing the unit to reverse. At present, there are many types of flap valves, but the specific technology is still relatively imperfect, and there are two major problems: one is that the water head loss at the outlet nozzle of the water pump is relatively large, and when the pump station is running, Since the initial opening angle of the flap door will not be very large, a large head loss will occur; secondly, when the water pump unit is shut down, the flap door will be closed quickly after being subjected to the combined action of its own gravity and t...

AI Technical Summary

Problems solved by technology

At present, there are many types of flap valves, but the specific technology is still relatively imperfect, and there are two major problems: one is that the water head loss at the outlet nozzle of the water pump is relatively large, and when the pump station is running, Since the initial opening angle of the flap door will not be very large, a large head loss will occur; secondly, when the water pump unit is shut down, the flap door will be closed quickly after being subjected to the combined action of its own gravity and the water pressure outside the door, which will have a negative impact on The pump body produces a large impact force, which will adversely affect the structure of the valve itself and other buildings connected to the pump

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