Valve special for special chlorine

Abstract

The invention discloses a valve special for special chlorine, and relates to the technical field of manufacturing of special valves. The valve comprises a valve body, a valve cover, a valve seat, a valve clack and a valve rod, wherein the valve seat is fixed in the valve body; a sealing end face of the valve clack is in tight fit with the valve seat; a through hole is formed in the center of the valve cover; the valve rod penetrates through the through hole; one end of the valve rod is connected with the valve clack; the other end of the valve rod is arranged outside the valve body; a filler sealing mechanism is arranged between the valve rod and the valve cover; the outer top end of the valve rod is connected with a hand wheel; the edge of the end part, matched with the valve seat, of the valve clack is arranged as a conical surface; a special groove is formed in the end face, in contact with the valve clack, of the valve seat; a polytetrafluoroethylene resin sealing body is arranged in the special groove; the conical surface of the valve clack is in contact fit with the polytetrafluoroethylene resin sealing body; an inverted cone-shaped sealing bulge back to the valve clack is arranged on the valve rod in the valve body; a conical notch corresponding to the inverted cone-shaped sealing bulge is arranged at the center of the inner end face of the valve cover; and the inverted cone-shaped sealing bulge is in tight fit with the conical notch. The valve is good in sealing property and long in service life.

Description

technical field [0001] The invention relates to the technical field of manufacturing a special valve, in particular to a special valve for chlorine gas. Background technique [0002] In the past, chlorine pipeline valves were usually made of ordinary carbon steel casting shells, which were ordinary valves with poor material strength, single sealing structure, and general performance. Ordinary valves are not affected by the current chlorine gas working environment in terms of material or structure and are used normally. On the one hand, the sealing performance of the inner and outer sealing parts of this ordinary valve is not good, and it cannot prevent the leakage of the medium well; The neck of the flange is broken and leaks, and the service life is short, which cannot meet the special requirements of long-term effective medium transmission. Once it leaks out, it will bring great harm to the surrounding environment and personal safety, especially in the current chemical en...

AI Technical Summary

Problems solved by technology

On the one hand, the sealing performance of the inner and outer sealing parts of this ordinary valve is not good, and it cannot prevent the leakage of the medium well; The neck of the flange is broken and leaks, and the service life is short, which cannot meet the special requirements of long-term effective medium transmission. Once it leaks out, it will bring great harm to the surrounding environment and personal safety, especially in the current chemical enterprise park. Leakage will bring disaster to enterprises in the entire park

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