An eccentric chord high full flow check valve

Abstract

The invention discloses a full-flow check valve with eccentric chord height. The valve comprises a valve body and a valve clack hinged in the valve body, wherein a water inlet channel and a water outlet channel are formed in two ends of the valve body respectively, a limiting groove for limiting the maximum rotation travel of the valve clack is formed in the valve body, an arc-shaped groove is formed in the middle of one end, close to the water inlet channel, of the valve clack, a sealing device is arranged in a position, located at the outer end of the arc-shaped groove, of the valve clack and comprises a sealing piece, a reset spring and a connecting screw, a sealing piece mounting groove and a screw hole are transversely formed in the valve clack, the head of the connecting screw is in threaded connection with the inner end of the sealing piece, and the sealing piece is pressed against the surface of an outlet end of the water inlet channel under the action of the elastic force of the reset spring so as to form sealing. According to the valve, the limiting groove is formed reasonably, so that a medium can pass through the check valve in a full-flow manner, the structure is compact, and no material is wasted; the sealing device on the valve clack is simple in structure, convenient to mount and dismount and easy to maintain, the sealing piece is good in sealing effect, the anti-corrosion purpose is achieved, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an eccentric chord height full-flow check valve. Background technique [0002] Swing check valve, also known as check valve, one-way valve or check valve, is used to ensure the directional flow of the medium in the pipeline without backflow. Check valves include swing check valves. At present, when the swing check valve is in use, when the valve disc and the valve seat are sealed, the seal is installed on the end face of the valve disc and squeezed by the pressure plate to realize The purpose of sealing, however, due to the poor firmness of the seal, it is easy to fall off during use, thereby affecting the seal, and the seal is easily corroded, and the replacement of the seal is troublesome, resulting in a reduced service life; Most of the open check valves cannot be fully opened, so the flow of the medium is limited, which will cause a large power loss in the pipeline system. A ...

AI Technical Summary

Problems solved by technology

Check valves include swing check valves. At present, when the swing check valve is in use, when the valve disc and the valve seat are sealed, the seal is installed on the end face of the valve disc and squeezed by the pressure plate to realize The purpose of sealing, however, due to the poor firmness of the seal, it is easy to fall off during use, thereby affecting the seal, and the seal is easily corroded, and the replacement of the seal is troublesome, resulting in a reduced service life; Most of the open check valves cannot be fully opened, so the flow of the medium is limited, which will cause a large power loss in the pipeline system, and a small part can be fully opened, but the cavity is large, the product structure is huge, and there is a lot of material waste, which is uneconomical.

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