Non-return venting valve

Abstract

The invention relates to the technical field of auxiliary parts used for pump valves, in particular to an anti-sand pressure relief device capable of being mounted at a water outlet of a pump valve and the like. A waterstop valve clack is arranged on one side of a water outlet of a first water outlet pipe, the waterstop valve clack is mounted on a valve rod, the valve rod conducts axial displacement in the water outlet to drive the waterstop valve clack to control opening and closing of the water outlet of the first water outlet pipe, a second water outlet pipe is mounted on one side of the water outlet of the first water outlet pipe, a sealed leather bag is arranged between the second water outlet pipe and the first water outlet pipe, the outer ring of the sealed leather bag is arranged at the connection of the first water outlet pipe and the second water outlet pipe in a sealed mode, an inner ring is mounted at the water outlet of the first water outlet pipe in a sealed mode, and atleast one water relief hole is formed in the second water outlet pipe. The non-return venting valve has the advantages that the using safety of the pump valve is improved, meanwhile, the influence that water backflows to make sand in the water backflow into the pump valve, and the pump valve is damaged can be effectively prevented, and the normal working and quality indemnificatory of the pump valve is improved.

Description

technical field [0001] The invention relates to the technical field of auxiliary fittings for pump valves, in particular to a non-return discharge valve that can be installed on water outlets such as pump valves. Background technique [0002] Pump valves are widely used in irrigation, water delivery and other scenarios in today's era. At present, the water outlet structure of the traditional pump valve is relatively simple. If this kind of pump valve is used in an environment with relatively clear water environment, the performance will not be greatly affected in all aspects, but in the water environment with a lot of sediment When in use, the water backflow usually occurs due to the sudden shutdown of the pump valve. During the process of water backflow, the impurities in the water will flow back into the pump valve, which will cause the parts in the pump valve to be refluxed. Sand clogging, or even damage to the pump valve, has a great impact on the quality of the pump va...

AI Technical Summary

Problems solved by technology

At present, the water outlet structure of the traditional pump valve is relatively simple. If this kind of pump valve is used in an environment with relatively clear water environment, the performance will not be greatly affected in all aspects, but in the water environment with a lot of sediment When in use, the water backflow usually occurs due to the sudden shutdown of the pump valve. During the process of water backflow, the impurities in the water will flow back into the pump valve, which will cause the parts in the pump valve to be refluxed. Sand clogging, or even damage to the pump valve, has a great impact on the quality of the pump valve, and because the pump valve is mostly used in the water environment, once the pump valve is damaged, it is very easy to have unpredictable consequences such as leakage, which is harmful to the pump valve. The use of

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