Micro water pump

Abstract

The invention discloses a micro water pump, which comprises a motor, a shell, and an upper cover provided with a water inlet pipeline and a water outlet pipeline, wherein the motor is fixed at the bottom of the shell, a driving shaft of the motor extends into the shell and is provided with a driving gear, the driving gear is engaged with a driven gear, and the lower end of a pendulum shaft is obliquely inserted into the driven gear; a water bag seat, a valve seat and the upper cover are sequentially connected along the upper part of the shell and fixed with one another, the middle of the water bag seat is provided with a through hole, and the lower part of the inner surface of the middle through hole of the water bag seat is of an outwards stretching cone; a water bag, the lower part of which is provided with a connecting protrusion, is sleeved on the through hole of the water bag seat; the valve seat is provided with a water inlet check valve sheet and a water outlet check valve sheet; the lower part of a crank is sleeved at the upper end of the pendulum shaft, and the edge of the crank is connected with the connecting protrusion at the lower part of the water bag; and a soft water blocking sheet is arranged between the upside of the crank and the lower part of the water bag, the middle of the water blocking sheet is sleeved on the connecting protrusion at the lower part of the water bag, and the edge of the water blocking sheet is pressed between the lower end face of the water bag seat and the upper end face of the shell. The micro water pump has the advantages of long service life, good electric safety and wide application range.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a water bladder micro water pump. Background technique [0002] At present, micro-pumps have been widely used in small household appliances, medical equipment, testing instruments, etc. Traditional micro-pumps mostly adopt a centrifugal structure, which is generally composed of a motor, a housing, an impeller, and an end cover. The pump with this structure runs for a period of time Finally, the impeller will wear and tear, causing the pressure and flow of the pump to be unstable, and sometimes the impeller will be stuck, causing damage to the motor due to overcurrent, reducing the service life of the pump. [0003] With the advancement of technology, some micro-pumps also adopt the water bladder structure. The water bladder structure has the characteristics of stable pressure and flow. Friction with the water bladder seat causes the water bladder to be damaged. After the wat...

AI Technical Summary

Problems solved by technology

[0002] At present, micro-pumps have been widely used in small household appliances, medical equipment, testing instruments, etc. Traditional micro-pumps mostly adopt a centrifugal structure, which is generally composed of a motor, a housing, an impeller, and an end cover. The pump with this structure runs for a period of time Finally, the impeller will be worn, causing the pressure and flow of the pump to be unstable, and sometimes the impeller will be stuck, causing damage to the motor due to overcurrent, reducing the service life of the pump

[0003] With the advancement of technology, some micro-pumps also adopt the water bladder structure. The water bladder structure has the characteristics of stable pressure and flow. Friction with the water bladder seat causes the water bladder to be damaged. After the water bladder is damaged, water will leak, and the water will flow to the motor, causing the motor to short circuit and cause damage. The maintenance cost is high

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