Through-flow check valve for chlorine gas

Abstract

The invention relates to the valve design technical field and provides a through-flow check valve for chlorine. The through-flow check valve for the chlorine comprises a valve body, a valve seat and a valve clack; the valve seat is in threaded connection with the interior of the lower end of the valve body; a winding type sealing gasket is arranged between the valve body and the valve seat and arranged under the position of the threaded connection of the valve body and the valve seat; the valve clack is arranged above the valve seat and is in sealing connection with the valve seat; the valve clack comprises a valve clack body and a valve clack rod; the valve clack rod is connected above the center of the valve clack body; a blind hole is formed in the valve clack rod; the lower surface of the valve clack body is the arch surface which protrudes upward; the upper surface of the valve clack body is the slope surface which inclines downward; the inner chamber of the valve body is provided with a valve body middle support; a guide nut which sleeves the valve clack rod is in threaded connection with the valve body middle support. The through-flow check valve for the chlorine has the advantages of being novel in design and reasonable in structure, solving the problem of flushing of a fluid medium, guaranteeing the operational performance, improving the service life and being good in sealing performance, good in checking effect and accurate in placing.

Description

Technical field [0001] The invention relates to the technical field of valve design, in particular to a through-flow check valve for chlorine. Background technique [0002] At present, the check valves used on pipelines in the domestic chemical industry and other fields are ordinary check valves. The structure is ancient and heavy, and its performance cannot meet the requirements of the working conditions. It is often the case that the check valve disc cannot return well, causing losses and even accidents due to the backflow of the medium. Especially in the upper mouth of the chlorine pump of the chlor-alkali chemical industry, because the check valve cannot be stopped, the fluid will fall back and the pump will work in the opposite direction, causing equipment damage and affecting system failure. Summary of the invention [0003] The purpose of the present invention is to solve the above problems and provide a through-flow check valve for chlorine that can reasonably solve the s...

AI Technical Summary

Problems solved by technology

The structure is old and heavy, and the performance cannot meet the requirements of the working conditions. Often, the disc of the check valve cannot return well, causing losses or even accidents due to the backflow of the medium.

Especially in the upper port of the chlorine gas pump in the chlor-alkali chemical enterprise, because the check valve cannot stop, the fluid falls back and the pump works in the opposite direction, causing equipment damage and affecting the system paralysis

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