Full-automatic control check valve for water pump

Abstract

The invention discloses a full-automatic control check valve for a water pump. The full-automatic control check valve comprises a valve body, a coarse filter plate, a fixed disc, a fixed plate and a positioning plate are fixedly installed in the valve body, a movable disc is installed in the valve body through a sliding mechanism, a water drainage pipe and a plurality of water guide pipes are fixedly installed on the movable disc, and a blocking mechanism is installed in each water guide pipe; and a cleaning mechanism and a jacking mechanism are installed on the positioning plate, a positioning disc with a stepped hole is fixedly installed in the fixed disc through a water blocking pipe, a sealing disc is fixedly installed on the stepped hole through a plurality of extension springs, and a sealing mechanism is installed between the sealing disc and the positioning disc. The full-automatic control check valve has the advantages that through a multi-stage mutual-matching checking manner, normal forward circulation of water flow can be guaranteed, backflow of the water flow can be effectively prevented, impurities attached in the water flow can be effectively and thoroughly filtered out, and the cleaning effect is good.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a fully automatic control check valve for water pumps. Background technique [0002] The water pump is a machine commonly used to pump liquid in daily life. The water delivery pipe of the water pump is usually equipped with a check valve to control the delivery flow of the water pump and prevent the backflow of the liquid when the water pump is working; [0003] After retrieval, the Chinese authorized utility model patent No. CN207535267U discloses a flow-limiting check valve, which mainly consists of a valve body, a valve seat, a disc, a filter, a valve cover, a flow-limiting guide valve, a spring, a spring seat, a needle It consists of a shaped valve, a diaphragm and a guide rod. The inlet of the valve body is connected to the bonnet cavity by a conduit, and a flow-limiting pilot valve is arranged on the conduit. A one-way valve is arranged behind the flow-limiting pilot va...

AI Technical Summary

Problems solved by technology

[0005] 1. The device adopts a single-layer check method to prevent liquid backflow. This check method has poor blocking effect and poor sealing performance;

[0006] 2. The device cannot effectively filter and remove impurities passing through the liquid inside the valve body, and the effect of filtering impurities is poor, which has certain limitations;

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