Vacuum pump with function of performance degradation early warning and application of vacuum pump to oiling machine

Abstract

The invention discloses a vacuum pump with the function of performance degradation early warning and application of the vacuum pump to an oiling machine. The vacuum pump comprises a machine shell, a motor, a crankshaft, fan blades, an auxiliary shell, a negative-pressure shell and a crank piston. One end of the crankshaft is a straight end and is fixedly connected with a rotating shaft of the motor. The fan blades are fixedly connected to the straight end of the crankshaft. The auxiliary shell is fixed to the open end of the machine shell and packages the fan blades and the motor in the machine shell. The negative-pressure shell is of a barrel-shaped shell structure with one end being open and is fixed to the side, penetrating out of the crankshaft, of the auxiliary shell. The piston end of the crank piston adapts to the open end of the negative-pressure shell, penetrates into the negative-pressure shell from the open end of the negative-pressure shell and is in sliding connection in the negative-pressure shell, the crank end of the crank piston is connected with the eccentric end of the crankshaft, and the rotating shaft of the motor rotates to drive the crankshaft to drive the crank end of the crank piston to draw the piston end of the crank piston to do piston motion in the negative-pressure shell. The vacuum pump further comprises a first negative pressure sensing mechanismconnected to the auxiliary shell of the vacuum pump, performance early warning of the vacuum pump is carried out through the negative pressure sensing mechanism, and implementation of the scheme is reliable.

Description

technical field [0001] The invention relates to the field of fuel dispenser systems, in particular to a vacuum pump with performance attenuation warning and its application in fuel dispensers. Background technique [0002] The oil and gas recovery function of the oil and gas recovery system of the gas station is one of its necessary functions. If the return air of the fuel gun fails or does not meet the standard, it is easy to cause the fuel gun to jump ahead of time or affect the normal adjustment or other fueling failures when refueling. Therefore, the air return function of the refueling gun is usually tested during regular inspections, and the air return function of the refueling gun in the oil vapor recovery system of the gas station is mainly controlled by the oil vapor recovery pump installed in the fuel dispenser. As we all know, the vacuum pump After long-term work, there will be a certain degree of power attenuation or other problems that cause its negative pressur...

AI Technical Summary

Problems solved by technology

[0002] The oil and gas recovery function of the oil and gas recovery system of the gas station is one of its necessary functions. If the return air of the fuel gun fails or does not meet the standard, it is easy to cause the fuel gun to jump in advance or affect the normal adjustment or other fueling failures when refueling. Therefore, the air return function of the refueling gun is usually tested during regular inspections, and the air return function of the refueling gun in the oil vapor recovery system of the gas station is mainly controlled by the oil vapor recovery pump installed in the fuel dispenser. As we all know, the vacuum pump After long-term work, there will be a certain degree of power attenuation or other problems that cause its negative pressure to break down. The traditional way to check the return air pump is to achieve it by disassembling some parts and reconnecting them. This method It is not only a waste of time, but also when the equipment is repeatedly disassembled and assembled, the installation gap will become larger and air leakage will easily occur. device, it will greatly improve the efficiency and convenience of the maintenance and inspection of the tanker

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