Check valve and intermittent liquid delivery pump thereof

• Main Authors: NIU JINGHONG, LIU GUANGFENG, BI MINGSONG, XIE HAITAO, LI BO, QI MIAOMIAO
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2021
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model provides a check valve and an intermittent liquid delivery pump thereof, the check valve comprises an opening and closing body B, the opening and closing body B is provided with a liquid flow channel B, the liquid flow channel B is composed of an upper circulation part B arranged on the liquid flow channel B and a lower circulation part B, and the diameter of the lower circulation part B is larger than that of a circulation channel in the upper circulation part B; the valve core body B is arranged in the liquid flow channel of the lower circulation part B and consists of a static valve seat with a liquid flow hole, a dynamic sealing part which is arranged on the static valve seat and moves up and down in the axial direction relative to the static valve seat, and a spring which is arranged between the static valve seat and the dynamic sealing part and enables the dynamic sealing part to move up and down; a minimum gap meeting the flow of the check valve is reserved between the movable sealing