Special blow-down valve for sewage treatment sedimentation tank

Abstract

The invention relates to the technical field of valves, in particular to a special blow-down valve for a sewage treatment sedimentation tank. The special blow-down valve comprises a blow-down pipe, wherein a mounting part is fixedly connected to the upper part of the outer wall of the blow-down pipe, a mounting cavity is formed in the mounting part, a partition assembly for blocking sludge in the sewage tank is arranged on the inner wall of the mounting cavity, the partition assembly comprises a connecting piece, a partition water bag and a water filling pipe, the bottom end of the connecting piece is fixedly connected with the partition water bag, and the top end of the connecting piece is fixedly connected with a water filling pipe. According to the invention, the partition water bag is filled with water through the water filling pipe, so the partition water bag is expanded to block the blow-down pipe, a clear water section is reserved between a valve plate and the partition water bag, the situation that too much sludge is accumulated in the blow-down pipe to hinder the working of the blow-down valve is avoided, and the situation that the sludge abrades the valve plate is also avoided.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a special sewage discharge valve for a sewage treatment sedimentation tank. Background technique [0002] Sewage valves are generally used to discharge sludge, and are more commonly used in sewage sedimentation tanks. [0003] When the sewage valve is used today, the pipeline between the sewage tank and the sewage valve is prone to sedimentation of silt, and the deposited silt blocks the sewage valve, which makes the resistance of the sewage valve opening large. The liquid flow at the mouth is fast, and the silt often contains sand particles, which will cause a lot of wear on the valve port and affect the service life of the blowdown valve. Contents of the invention [0004] The purpose of the present invention is to provide a sewage discharge valve dedicated to sewage treatment sedimentation tanks, including a sewage discharge pipe, a mounting part is fixedly conne...

AI Technical Summary

Problems solved by technology

[0003] When the sewage valve is used today, the pipeline between the sewage pool and the sewage valve is prone to sedimentation of silt, and the deposited silt blocks the sewage valve, which makes the resistance of the sewage valve opening large. The liquid flow at the mouth is fast, and the silt often contains sand particles, which will cause a lot of wear on the valve port and affect the service life of the blowdown valve.

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