butterfly valve

A butterfly valve and valve body technology, which is applied in the direction of lift valves, valve devices, engine components, etc., can solve the problems of large size and specification of butterfly valves, corrosive medium, and laborious opening of butterfly valves, so as to improve dustproof performance and corrosion resistance Ability to improve the effect of sealing performance
CN103759026BActive Publication Date: 2015-12-02NINGBO TIANJILONG INTELLIGENT CONTROL TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO TIANJILONG INTELLIGENT CONTROL TECH
Publication Date
2015-12-02

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Abstract

The invention discloses a butterfly valve. The butterfly valve comprises a valve body, a valve base, a valve rod and a valve flap. According to the butterfly valve, the improvement is performed on the following performances: 1, the valve flap is divided into two parts, a pressure release hole is formed in the valve flap, so that the valve flap releases pressure before rotating wholly and opens in steps during opening, thus the butterfly valve is small in opening pressure and labor-saving; 2, due to the introduction of a titanium material and a fluorine plastic layer, so that the corrosion resistance of the butterfly valve is greatly improved; 3, due to the adoption of a dustproof ring, so that the dustproof performance of the butterfly valve is improved; and 4, due to the adoption of a sealing tape, the sealing performance of the butterfly valve is improved. Through the manner, the butterfly valve is excellent in comprehensive performance.
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Description

technical field

[0001] The invention relates to the technical field of valves, in particular to a butterfly valve. Background technique

[0002] It is undeniable that butterfly valves have become one of the most widely used valves at present. Generally, a butterfly valve includes a valve body, a valve seat, a valve stem, and a valve disc. That is, the valve seat is fixed in the inner cavity of the valve, the valve disc is located in the inner cavity of the valve seat, and after the valve disc rotates, its edge and the valve seat are sealed or opened, and the valve rod is used to drive the valve disc to perform After rotating, the upper part of the valve stem passes through the upper part of the valve body and is connected to a rotating device such as a handle or an actuator. However, the working environment of butterfly valves is mostly harsh, such as dusty, high temperature, high pressure of the circulating medium, corrosive medium, etc., and the size of butterfly valves ...

Claims

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