A kind of spin check valve

Abstract

The invention relates to the field of valve design and particularly discloses a spin one-way valve. By arranging a sinking type groove on a valve body, a part of impurities in a fluid medium is effectively stored, and influence on opening and closing of a valve clack caused by too much accumulation of the impurities is prevented; by arranging a valve seat with an inclined angle and the valve clackwith an inclined angle, impacts on the end surface of the valve seat by the valve clack and on the valve clack by the medium are effectively retarded, the end surface of the valve seat is prevented from being worn, and non-strict sealing of the valve body is further avoided; by arranging structures of a detachable wear-resistant liner and a sealing short shaft pin, wear on the contact surface ofa long shaft pin caused by rotation of a rocker when the valve clack is opened or closed is effectively avoided, and the short shaft pin can also be avoided from being worn and deforming; meanwhile, by plating chromium on the surface of the wear-resistant liner, the wear resistance can also be improved; and by designing a valve clack dovetail groove on the side surface of the valve clack and mounting a sealing rubber ring, the sealing performance of the spin one-way valve is effectively improved.

Description

technical field [0001] The invention belongs to the field of valve design, in particular to a spin-type one-way valve. Background technique [0002] The spin check valve is a valve used to prevent the backflow of the pipeline medium. Allows media to flow in one direction only while blocking flow in the other direction. This kind of valve works automatically. Under the action of fluid pressure in one direction, the valve disc opens; when the fluid flows in the opposite direction, the valve disc automatically closes due to the fluid pressure and the self-weight of the valve disc, thereby cutting off the medium flow. Spin-type check valves are widely used in petroleum, chemical, food, medicine, water supply and drainage, and energy systems. They are installed at the water pump outlet. It is not completely clean, and the impurities in the medium are easy to accumulate in the valve body. If it is not cleaned for a long time, it is easy to cause the airtightness of the one-way v...

AI Technical Summary

Problems solved by technology

Spin-type check valves are widely used in petroleum, chemical, food, medicine, water supply and drainage, and energy systems. They are installed at the water pump outlet. It is not completely clean, and the impurities in the medium are easy to accumulate in the valve body. If it is not cleaned for a long time, it is easy to cause the airtightness of the one-way valve and affect the check effect of the valve. Rods, pivot pins, positioning bolts, etc. are severely corroded, and it is relatively difficult to disassemble the parts inside the valve body. It is often necessary to replace the entire valve body, thereby increasing the operating cost of the enterprise

Images