Compound pump

• Main Authors: SHEN HANG, ZHU JIANJIE
• Format: Patent
• Language: Chinese; English
• Published: 08.04.2022
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

The invention relates to the technical field of pumps, in particular to a compound pump which comprises a pump body, a rotating shaft is rotationally connected to the pump body, a turning groove is formed in the rotating shaft, a rotary vane is slidably mounted in the turning groove in a sealed mode, the two ends of the rotary vane are attached to the inner wall of the pump body, the curve inner wall of a cavity of the pump body comprises a curved surface A and a curved surface B, and the two ends of the curved surface A are tangent to the two ends of the curved surface B; the tangent point of the top of the curved surface A and the top of the curved surface B is internally tangent to the rotating shaft, the end point E of a rotary vane installed in the rotating shaft keeps in contact with the curved surface A all the time, along with rotation of the rotary vane, the rotary vane shrinks towards the interior of the rotating shaft under the action of the curved surface A, and the other end point F of the rotary