Straight-through type fluoroplastic lined diaphragm valve

Abstract

The invention provides a straight-through type fluoroplastic lined diaphragm valve which comprises a valve body, wherein the valve body is composed of a valve base, a diaphragm leaf, a diaphragm washer, a valve clack, a valve deck and a hand wheel, a fluoroplastic lining layer is arranged on the valve base, a fluoroplastic seal is arranged on the diaphragm leaf, a plug pin opening is arranged in the valve clack, the diaphragm leaf and the diaphragm washer are fixed to the valve clack through plug pins, and the valve deck, the valve clack, the diaphragm leaf and the diaphragm washer are fixed to the valve base through a bolt. The straight-through type fluoroplastic lined diaphragm valve has the advantages that fluoroplastic materials are resistant to corrosion, long in service life, non-hygroscopic and extremely stable in resistance to oxygen and ultraviolet light, and have excellent weather ability. According to the straight-through type fluoroplastic lined diaphragm valve, the diaphragm leaf is made of fluoroplastics, fluoroplastic lining processing is adopted in the portion, making contact with a medium, of the valve base and a sealing surface to manufacture the straight-through type fluoroplastic lined diaphragm valve, and corrosion resistance and ageing resistance of the diaphragm valve are greatly improved.

Description

technical field [0001] The invention relates to a valve, in particular to a straight-through fluorine-plastic lined diaphragm valve. Background technique [0002] Most of the diaphragm valves in the past have a soft seal structure. The diaphragm is made of rubber (soft, hard, neoprene and butyl rubber, etc.). During use, the working medium only contacts the diaphragm and the valve seat. Due to the corrosion of the working medium Because of the nature and diversity of the valve, the various working media that the valve cannot ideally control may easily cause damage to the pipeline and media leakage during short-term use, which will have a certain impact on normal production and operation. At present, in the domestic and foreign markets, there is no straight-through diaphragm valve with a fluorine-lined structure, and some barrier valves use a fluorine-lined structure. However, this kind of barrier valve has a small flow rate, and the middle partition is easy to cause medium r...

AI Technical Summary

Problems solved by technology

[0002] Most of the diaphragm valves in the past have a soft seal structure. The diaphragm is made of rubber (soft, hard, neoprene and butyl rubber, etc.). During use, the working medium only contacts the diaphragm and the valve seat. Due to the corrosion of the working medium Because of the nature and diversity of the valve, the various working media that the valve cannot ideally control will easily cause damage to the pipeline and media leakage during short-term use, which will have a certain impact on normal production and operation.

At present, in the domestic and foreign markets, there is no straight-through diaphragm valve with a fluorine-lined structure, and some barrier valves use a fluorine-lined structure. However, this kind of barrier valve has a small flow rate, and the middle partition is easy to cause medium retention.

Images