Plastic pump for high pressure cleaning machine

Abstract

The invention relates to a plastic pump for a high-pressure cleaning machine, which comprises a series excitation motor and an axial plunger pump; a speed reduction mechanism is arranged between the motor and the axial plunger pump; the axial plunger pump comprises a pump seat, a pump body, a pump head and a pump cover; the inside of the pump seat is provided with a bearing seat; the bearing seat is provided with a thrust ball bearing which is contacted with a plunger; the inside of a plunger hole is provided with a spring seat; and the spring seat is provided with a spring and a water inlet valve. The plastic pump is characterized in that the speed reduction mechanism comprises a central gear arranged on the output shaft end of the series excitation motor; the outside of the central gear is provided with two planetary gears which are engaged with inner gears manufactured on the pump seat; one end of a planetary rack is arranged into inner holes of the two planetary gears; the other end of the planetary rack is arranged into an irregular hole of the bearing seat; and the pump seat, the pump head, the pump cover and the bearing seat are all made of engineering plastic.

Description

technical field [0001] The invention relates to a plastic pump, in particular to a plastic pump used in a high-pressure washer. Background technique [0002] The existing electric pump used for high-pressure cleaning machines has a complicated structure for connecting the transmission transmission mechanism between the motor and the pump, which is not only cumbersome to manufacture and install, but also has a large volume, which affects the appearance of the entire cleaning machine. On the other hand, most of the materials for making pumps are copper alloys, aluminum alloys, and zinc alloys. In comparison, copper alloys are expensive and dense; zinc alloys are slightly lower in price and higher in density; , but ordinary zinc alloy and aluminum alloy have poor corrosion resistance and wear resistance; moreover, pumps made of metal materials are heavy, which is not conducive to moving. Contents of the invention [0003] The purpose of the present invention is to overcome t...

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Problems solved by technology

[0002] The existing electric pump used for high-pressure cleaning machines has a complex structure of transmission and speed change mechanism connecting the motor and the pump, which is not only troublesome to manufacture and install, but also has a large volume, which affects the appearance of the entire cleaning machine

On the other hand, most of the materials for making pumps are copper alloys, aluminum alloys, and zinc alloys. In comparison, copper alloys are expensive and dense; zinc alloys are slightly lower in price and higher in density; , but ordinary zinc alloy and aluminum alloy have poor corrosion resistance and wear resistance; moreover, pumps made of metal materials are heavy, which is not conducive to moving

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