Baffle valve device

Abstract

The invention relates to a baffle valve device. The baffle valve device mainly comprises a pneumatic server and a connection rod crank mechanism. The baffle valve device is characterized in that a servo cylinder of the server is provided with an inner air cylinder sleeve and an outer air cylinder sleeve; the left side thrust face of a piston is a circular ring; the right side thrust face of the piston comprises the circular ring and the circular area of the section, perpendicular to the axis of the cylinder sleeve, of the inner cylinder sleeve; the area of the circular ring is equal to the circular section area of the inner cylinder sleeve; the right side thrust face of the piston is two times of the left side thrust face of the piston; two-four baffle blocks are welded to a base plate of a circular end cover of the servo cylinder of the server; air inflows of two cavities of the servo cylinder come from the same air source, and the air inflow of the right cavity enters through a throttling element; an air inlet in the right side of the servo cylinder is connected with a discharge pipeline, and a normally closed solenoid valve is installed on the pipeline. The baffle valve device has the beneficial effects that automatic control over opening and closing of a valve plate of the baffle valve device is very easy to achieve; in addition, the characteristics of fast opening and slow closing are achieved, so that it is facilitated that the valve plate is closed tightly and the life of the equipment is kept long, and the baffle valve device is very suitable for serving as a protective device.

Description

technical field [0001] The invention relates to the technical field of safety equipment, in particular to a baffle valve device. Background technique [0002] At present, for some low-pressure gas containers used in industry, when some operating parameters exceed the limit, in order to ensure the safety of production, the material in the container needs to be released quickly, and the valve can be quickly opened on the discharge pipe. The opening and closing of the flapper valve is driven by the pneumatic servo cylinder, and the left and right reversing movement of the servo cylinder piston is realized by the two-position four-way electromagnetic reversing valve, so as to realize the automatic interlock protection of the safe operation of the equipment; the electromagnetic reversing The use of directional valves is more complicated, and it is difficult to realize the characteristics of fast opening and slow closing that ideal protection valves should have. Contents of the ...

AI Technical Summary

Problems solved by technology

[0003]The object of the present invention is to provide a flapper valve device, which solves the problem that the electromagnetic reversing valve is complicated to use and difficult to realize the fast opening and slow closing that the ideal protection valve should have. question

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