Check valve capable of preventing accumulated liquid from flowing back

Abstract

The invention relates to the technical field of check valves and discloses a check valve capable of preventing accumulated liquid from flowing back. The check valve comprises a shell; a fixing block is fixedly connected into the shell; a bottom leakage-proof plate is fixedly connected into the position, located on the top of the fixing block, of the shell; a supporting rod is fixedly connected into the position, located on the top of the bottom leakage-proof plate, of the shell; the end, away from the inner wall of the shell, of the supporting rod is fixedly connected with a supporting pipe; and a valve rod is slidably connected into the supporting pipe. According to the check valve capable of preventing the accumulated liquid from flowing back, by arranging the supporting rod, the supporting pipe, the valve rod, a valve core and clamping grooves, tail gas can be prevented from flowing back; by arranging a top leakage-proof plate and the bottom leakage-proof plate, the accumulated liquid can flow to a liquid receiving hole along the outer wall of the top leakage-proof plate and the outer wall of the bottom leakage-proof plate, and thus the accumulated liquid can be effectively prevented from flowing back; and finally, by arranging a liquid receiving pipe, connection sleeves, bearing pipes and a liquid storage bottle, the accumulated liquid can flow into the liquid storage bottle, and thus the accumulated liquid is effectively prevented from flowing back.

Description

technical field [0001] The invention relates to the technical field of check valves, in particular to a check valve capable of preventing effusion backflow. Background technique [0002] Check valve refers to a valve that automatically opens and closes the valve flap by relying on the flow of the medium itself, and is used to prevent the backflow of the medium. It is also called check valve, one-way valve, reverse flow valve and back pressure valve. The check valve is an automatic valve , its main function is to prevent the reverse flow of the medium, prevent the reverse rotation of the pump and the drive motor, and discharge the container medium. [0003] At present, the existing check valves on the market will produce effusion and reflux when used in rectification equipment. When the effusion will pass through the check valve and flow back into the rectification equipment, a check valve that can prevent the effusion backflow is proposed to solve the above-mentioned proble...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a check valve capable of preventing backflow of effusion, which has the advantages of preventing backflow of effusion, etc., and solves the problem of backlog when the existing check valve is used in rectification equipment. backflow problem

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