High pressure pump and a pumping method using the same
AssigneeHuizhou Hydro Caresys Medical Co., Ltd.
InventorFengling LUO
Life of this patent
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Abstract
A high-pressure pump includes a pump body provided with a piston cavity. A valve assembly and a piston are respectively provided at an end of the piston chamber. An outer end surface of the piston is connected to a push rod. An outer side wall of the piston is provided with a first recess. An outer end surface of the piston is provided with a mounting groove. The push rod is provided with a connecting rod, and an end of the connecting rod close to the piston is provided with an engaging portion, the outer diameter of the engaging portion is larger than the outer diameter of the connecting rod. A bottom of the mounting groove is provided with an engaging groove, and the engaging portion is fitted into the engaging groove. A pumping method using the high-pressure pump is also provided.
Claims9
A high-pressure pump, comprising a pump body;
- wherein the pump body is provided with a piston chamber;
- a valve assembly is provided at one end of the piston chamber, and a piston is slidably arranged at the other end of the piston chamber;
- and an outer end surface of the piston is connected to a push rod;
- an outer side wall of the piston is provided with a first recess in a circumferential direction, and both ends of the first recess elastically abut an inner side wall of the piston chamber;
- the outer end surface of the piston is provided with a mounting groove;
- an end of the push rod close to the piston is provided with a connecting rod;
- an end of the connecting rod close to the piston is provided with an engaging portion;
- an outer diameter of the engaging portion is larger than an outer diameter of the connecting rod;
- a bottom of the mounting groove is provided with an engaging groove;
- an inner diameter of the engaging groove is larger than an inner diameter of the mounting groove;
- an outer diameter of the engaging portion is larger than an inner diameter of the mounting groove, such that when the connecting rod is inserted into the mounting groove, wherein the connecting rod is in interference fit with the mounting groove;
- and the engaging portion is engaged with the engaging groove.
Dependencies are inferred from the claim text.