Sound-proof double air inlet micro air pump

Abstract

The invention discloses a sound-proof double air inlet micro air pump. The sound-proof double air inlet micro air pump comprises a motor and a shell assembly, wherein the shell assembly comprises a fixed base and a cup base; a valve seat is mounted on the cup base; an upper cover with an air outlet is arranged on the valve seat; the fixed base and the cup base are enclosed to form an air inlet cavity; the valve seat and the upper cover are enclosed to form an exhaust cavity; an eccentric cap, a linkage shaft and a linkage bracket are arranged in the air inlet cavity; an air compression cup is mounted on the cup base; a one-way exhaust valve is mounted on the valve seat; filtering sound-proof cotton is arranged in the exhaust cavity; an inner cavity of the air compression cup is an air compression cavity; the eccentric cap is connected with a motor; an eccentric hole is formed in the eccentric cap; one end of the linkage shaft is mounted in the eccentric hole; the other end is connected with the linkage bracket; a left air inlet hole and a right air inlet hole are formed in the fixed base; and positions of the left air inlet hole and the right air inlet hole exceed a rotation track of the eccentric cap to form a double air inlet structure. The sound-proof double air inlet micro air pump has the advantages of reducing air noise, large air suction amount, reducing air suction resistance and reducing vibration.

Description

technical field [0001] The invention relates to the technical field of a micro-air pump product, in particular to a sound-insulating double-intake micro-air pump. Background technique [0002] At present, the commonly used miniature air pump generally includes a motor and a housing assembly, the housing assembly is provided with a gas compression assembly, an exhaust port is opened on the upper end of the housing assembly, and the output shaft of the motor is connected to the eccentric of the gas compression assembly. The bottom end of the shell assembly is provided with a left air inlet and a right air inlet below the eccentric cap, the output shaft of the motor is connected to the non-central axis of the eccentric cap, and the eccentric cap rotates It blocks the left air intake or the right air intake. Moreover, the gas compressed by the gas compression component is directly output to the exhaust port through the one-way exhaust valve. For this reason, there are the foll...

AI Technical Summary

Problems solved by technology

For this reason, there are the following two defects in the micro-air pump of this common structure: (1) Since the gas is directly discharged through the one-way exhaust valve, the vibration noise of the one-way exhaust valve is easily transmitted directly during the period, so that there is a belt when the air is output. There is a loud noise; (2) Since the air intake can only be operated by a single air intake hole, the air intake volume of the air intake chamber in the shell assembly is insufficient, resulting in a large air intake resistance of the pump body. Strong vibration, loud noise

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