Zero-water-loss pumping automatic control valve

Abstract

The invention discloses a zero-water-loss pumping automatic control valve which comprises a main valve, a driver and a control valve, the driver is connected to the upper portion of the main valve, atransmission shaft is arranged in the driver, is in transmission connection with the main valve and is used for driving the main valve to be opened and closed; the control valve is used for controlling the moving direction of the transmission shaft; a pressure medium in a main valve pipeline is used as power to drive the control valve to act, and then the driver is driven to drive the main valve to be opened; and when an energy storage spring in the driver is reset, the transmission shaft is driven to close the main valve. According to the zero-water-loss pumping automatic control valve, the pressure medium in the pipeline is used as driving force, and the defect of oil leakage of a hydraulic control driving device is overcome; meanwhile, a check valve as a water pump outlet can achieve slow opening and rapid closing of the valve, and medium backflow is effectively prevented from damaging a water pump; and particularly, after the valve is opened, a main valve element is located at oneside of a flow channel, and the water head loss is consistent with a pipeline with the same length and is nearly zero.

Description

technical field [0001] The invention relates to a fluid working system, in particular to a zero water loss pump automatic control valve. Background technique [0002] In the pumping system, a check valve needs to be installed at the outlet of the pump. For a single pump station, it is mainly to prevent the damage to the pump caused by the backflow of the medium after the pump is stopped, and the outlet pipe network needs to be refilled with water when the pump is started again, which wastes resources; parallel pumps Without check valves, the normal operation of the pumping station cannot be realized. At present, the pump outlet check valve mainly has the form of butterfly valve driven by hydraulic control, butterfly check valve driven by hydraulic power, cut-off multi-function valve, etc., and usually needs external force such as hydraulic control device to control the valve, but the hydraulic control device There are problems of valve failure due to oil leakage and environ...

AI Technical Summary

Problems solved by technology

[0002] In the pumping system, a check valve needs to be installed at the outlet of the pump. For a single pump station, it is mainly to prevent the damage to the pump caused by the backflow of the medium after the pump is stopped, and the outlet pipe network needs to be refilled with water when the pump is started again, which wastes resources; parallel pumps Station, the normal operation of the pumping station cannot be realized without a check valve

At present, the pump outlet check valve mainly has the form of butterfly valve driven by hydraulic control, butterfly check valve driven by hydraulic power, cut-off multi-function valve, etc., and usually needs external force such as hydraulic control device to control the valve, but the hydraulic control device There are problems of valve failure and environmental pollution due to oil leakage

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