Patent ID: 11971023
Assignee: SHENZHEN CNHT LIMITED COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 3:
4. The miniature electromagnetic water pump of claim 2, wherein the pump body has a tubular structure with two open ends, the two open ends of the pump body are a liquid inlet end and a liquid outlet end respectively, the magnetic core plunger device comprises a core slidably arranged in the pump body, a reset spring connected to the liquid inlet end of the pump body, which tends to move the core toward the liquid outlet end of the pump body, a sleeve arranged at the liquid outlet end of the pump body, and a coupler sleeved on the sleeve, and wherein the core is hollow inside and formed with a flow channel for liquid to flow through, and an inner cavity between the end of the core close to the liquid outlet end of the pump body and the sleeve constitutes a pressure cavity, one end of the coupler close to the pump body is fixedly connected to the housing, and the other end extends in a direction away from the pump body and forms a liquid outlet cavity with the end of the sleeve away from the pump body, an axial through hole connecting the pressure cavity and the liquid outlet cavity is provided at the end of the sleeve away from the pump body, and the end of the coupler away from the pump body is connected to the throttle valve seat, a first one-way valve is provided at one end of the flow channel close to the sleeve for preventing the liquid in the liquid outlet cavity from flowing back into the flow channel, a second one-way valve is installed in the liquid outlet cavity to prevent the liquid in the liquid outlet cavity from flowing back into the pressure cavity, and the liquid outlet cavity and the containing groove on the throttle valve seat are communicated through the liquid inlet hole.