Leak-proof oil pump

Abstract

The utility model relates to a kind of anti-leakage engine oil pump, including engine oil pump body, worm assembly and the pump cavity located in the one end of worm assembly are equipped in engine oil pump body, oil inlet channel and oil outlet channel are provided in engine oil pump body, oil inlet channel and oil outlet channel are respectively set in the two sides of pump cavity and are respectively communicated with pump cavity by oil inlet, oil outlet, oil inlet and oil outlet are coaxially arranged and are set as T type with pump cavity, the one end of worm assembly corresponding pump cavity is provided with piston head, piston head is set in the junction of oil inlet, oil outlet and pump cavity, piston head outer diameter is compatible with pump cavity inner diameter, oil passage is hollowly provided in piston head, the one end of piston head corresponding pump cavity is provided with the first communicating port being communicated with oil passage, the position of piston head peripheral wall corresponding oil inlet is provided with the second communicating port being communicated with oil passage, worm assembly drives piston head axial rotation to make second communicating port and oil inlet or oil outlet communicate or stagger. By adopting the above technical scheme, leakage is reduced.

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