Novel airtight pneumatic valve

Abstract

The invention discloses a novel airtight pneumatic valve. Airtight pieces are arranged on the peripheries of the inner walls of channels between an inlet of a valve body and valve elements. The peripheries of the inner walls are provided with grooves. The airtight pieces are partially arranged in the grooves. The two valve elements are provided with through holes and sequentially arranged along the radial direction of an inner channel of the valve body. A valve switch plate is fixed to a mounting bracket through a flange. The valve body is provided with an annular clamping groove. The inner wall of the clamping groove is provided with annular rubber convex layers at equal intervals. A valve rod is provided with a sealing ring. A cylinder is arranged on the mounting bracket. The front end of a piston rod of the cylinder is connected with the valve switch plate. According to the novel airtight valve, the inner wall of the groove is provided with the annular rubber convex layers at equal intervals, so that the rubber convex layers make multiple contact with the sealing ring to form a plurality of sealing structures, and high-performance tightness is achieved; and sealing pieces are fixed to the inner walls of channels between inlets and valve elements of existing valves such as ball valves, sealing performance of the valve is achieved, and the valve is not prone to damage and long in service life.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a novel sealed pneumatic valve. Background technique [0002] Valves, there are sealing problems in the existing products. After a long time of use, the poor sealing performance will lead to water leakage, which will bring troubles to customers and is not conducive to long-term development. In many industrial processes, it is necessary to install monitoring instruments on the process pipelines to monitor the production process, which is conducive to improving production efficiency and reducing safety accidents. Since the process pipeline is often flammable, explosive or toxic gas, the installation method of the monitoring instrument at this stage is: stop the industrial production, wait for the gas in the pipeline to be replaced, and then fix the flange and other connecting parts on one side of the process pipeline Or both sides, and finally install the monitoring ins...

AI Technical Summary

Problems solved by technology

Due to the frequent opening and closing of the valve, the cover plate structure of the valve switch plate makes the connection between the valve switch plate and the valve switch plate mounting bracket easy to loosen, and even the valve switch plate will fall off from the valve switch plate mounting bracket, which is easy to be damaged and has a long service life. It is short and requires frequent replacement and maintenance; the valve switch plate and the valve switch plate mounting bracket are made of iron plates, which are prone to rust and corrosion. In order to prevent rust and corrosion, they need to be painted for treatment, which increases the production process; the valve operation is manual operation, which is time-consuming Laborious, troublesome to open and close