Fluoroplastic full-lining cutting ball valve

Abstract

The invention discloses a fluoroplastic full-lining cutting ball valve, and relates to a special valve. The fluoroplastic full-lining cutting ball valve comprises a valve body, a valve seat, a valve cover, a valve rod and a valve ball. The valve body is provided with an inlet, an outlet and an upper end connecting opening, the inlet and outlet are separately connected with inlet and outlet flanges, the valve cover is fixed to the upper end connecting opening through a bolt and a nut, the valve rod passes through the valve cover to be fixed, and the valve rod is sealed with the valve cover through arranging filling materials between the valve rod and the valve cover. The valve ball is arranged in the valve body, the valve rod and the valve ball are arranged integrally through casting, and afluoroplastic layer is arranged on the inner side wall of the valve body in a full-lining mode. Fluoroplastic layers are arranged on the inner and outer surfaces of the valve ball, and on the valve rod arranged in the valve body, and a fluoroplastic layer is arranged on the inner side surface of the valve cover. The valve rod and a ball body are processed by a machine tool after being whole forged, the problems that the valve rod is prone to being applied with force and a ball body is broken after welding the ball body and valve rod and a valve door cannot open due to the breaking of the valve rod and the ball body, and accidents are avoided; and the valve body and valve ball are fully lined with fluoroplastics, the fluoroplastic full-lining cutting ball valve can run reliably under environment with strong acid and strong base and has high corrosion resistance.

Description

Technical field [0001] The invention relates to a valve, in particular to the technical field of manufacturing a shut-off ball valve used on strong acid and strong alkali pipelines. Background technique [0002] At present, the valves in the chlor-alkali chemical industry are usually ordinary remote shut-off valves with general sealing performance. Ordinary valves do not have special characteristics in terms of materials or structure. On the one hand, the diaphragm of this kind of valve has poor sealing performance, and the diaphragm is easily damaged, which cannot prevent the leakage of the medium. On the other hand, it is toxic in strong acid and alkali situations. Under harmful process conditions, the sealing performance is often poor, easy to leak, the shell is easy to perforate, the diaphragm is easy to rupture, and the service life is short, which cannot meet the special requirements of equipment pipelines for long-term effective transportation of toxic and harmful media. ...

AI Technical Summary

Problems solved by technology

Ordinary valves do not have special characteristics in terms of materials and structures. On the one hand, the sealing performance of the diaphragm of this valve is not good, and the diaphragm is easily damaged, which cannot prevent the leakage of the medium well; Under harmful process conditions, the sealing performance is often poor, easy to leak, the shell is easy to perforate, the diaphragm is easy to break, and the service life is short, which cannot meet the special requirements of equipment pipelines for long-term effective transportation of toxic and harmful media

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