Back to results
US 2026/0177047 A1Published application
Hydraulic Linkage Plunger Pushing Mechanism and Plunger Diaphragm Pump Using Same
AssigneeShanghai Nikuni Fluid System Co., Ltd.
InventorsXinlin WU, Fengwei LIU
Life of this patent
Estimating the term…
Abstract
A hydraulic linkage plunger pushing mechanism for a plunger diaphragm pump body with a low-pressure liquid chamber and a plunger, includes: a bearing component; and a crankshaft disposed in the low-pressure liquid chamber in the plunger diaphragm pump body through the bearing component, the crankshaft comprising an eccentric part, and the eccentric part of the crankshaft sleeved with a bearing; wherein in case where the crankshaft rotates along a crankshaft axis thereof, the bearing disposed at the eccentric part of the crankshaft pushes the plunger to compress.
Claims20
A plunger diaphragm pump, comprising:
- a body, wherein the body is provided with a plunger plate;
- a liquid accumulation plate disposed on a side of the plunger plate;
- a low-pressure liquid chamber and a driving liquid chamber formed between the plunger plate and the liquid accumulation plate;
- a crankshaft disposed in the low-pressure liquid chamber;
- a bearing mounted on an eccentric part of the crankshaft;
- a plunger disposed on the plunger plate;
- a return spring arranged on one side of the plunger;
- a spherical surface provided on another side of the plunger;
- a push head disposed at the spherical surface and matched with the bearing;
- a plunger valve mounted on the liquid accumulation plate;
- a diaphragm plunger arranged on the plunger valve;
- and
- a bias spring disposed on the diaphragm plunger, wherein a pump body and a pump cover are sequentially arranged on the side of the plunger plate away from the liquid accumulation plate;
- the pump body is provided with a pump cavity, and a diaphragm is disposed in the pump cavity adjacent to the diaphragm plunger and connected to the diaphragm plunger;
- an inlet and an outlet are disposed at a position of the pump cavity away from the diaphragm plunger;
- and one-way check valves are respectively disposed at the inlet and the outlet.
13 more elements
Dependencies are inferred from the claim text.