Rotor type oil pump capable of absorbing oil timely

Abstract

The invention provides a rotor type oil pump capable of absorbing oil timely. The rotor type oil pump capable of absorbing the oil timely comprises a pump body, a pump cover, a transmission gear, a rotor shaft, and an inner rotor and an outer rotor which are mounted on the rotor shaft; one end of the rotor shaft is mounted in a shaft hole of the pump body; the other end of the rotor shaft is mounted in a shaft hole of the pump cover; the transmission gear is mounted at the end head of any end of the rotor shaft; a liner is mounted in the shaft hole of each of the pump body and the pump cover, wherein an axial exhaust slot is formed between the wall of the shaft hole of the pump body and the outer peripheral surface of the liner; the position of the exhaust slot is close to an oil outlet end of an oil pump. The rotor type oil pump capable of absorbing the oil timely has the beneficial effects that the exhaust slot is additionally formed in the oil outlet end, so that the air in closed space can be exhausted from the exhaust slot timely when the oil pump is initially started; therefore, the oil is absorbed rapidly to establish oil pressure; a one-way valve is opened under the action of the oil pressure, and oil liquid enters a lubricating oil channel to lubricate an engine.

Description

technical field [0001] The invention relates to a component of an engine lubricating system, in particular to a rotor type oil pump. Background technique [0002] The rotor oil pump consists of a pump body, a rotor shaft, an inner rotor, an outer rotor and a pump cover. The inner rotor is fixed on the rotor shaft and is directly or indirectly driven by the crankshaft gear. The inner rotor and the outer rotor are arranged eccentrically, and the inner rotor drives the outer rotor to rotate in the same direction. The tooth profiles of each tooth of the inner and outer rotors can always maintain a point contact state with each other, so that several working chambers are formed between the inner and outer rotors. When a certain working chamber turns from the oil suction chamber, the volume increases and a vacuum is generated, and the oil is sucked into the working chamber from the oil inlet hole. As the inner and outer rotors continue to rotate, the working chamber turns to the ...

AI Technical Summary

Problems solved by technology

When the oil pump is initially started, due to the existence of the one-way valve, there is an approximately closed space between the oil outlet of the oil pump and the one-way valve, so when the oil pump rotor starts to rotate, the working chamber cannot absorb oil in time due to the existence of the closed space. , the oil pressure cannot be established quickly, the one-way valve is difficult to open, and finally the engine cannot start smoothly or even damage the parts

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