Single-plunger high-pressure self-priming pump and handheld high-pressure cleaning machine

Abstract

The single-plunger high-pressure self-priming pump comprises a pump body, a plunger and a power part, the pump body is divided into a water inlet cavity and a water outlet cavity by the plunger, the water outlet cavity is connected with a water outlet connector, the water inlet cavity is connected with a water inlet connector, the water inlet connector is connected with a water inlet end, and a water outlet one-way valve is arranged in the water outlet cavity; a pressurizing flow channel is formed among the water inlet connector, the water outlet connector and the pump body, the water inlet cavity and the water outlet cavity are communicated through the pressurizing flow channel, and a first water inlet one-way valve for communicating or disconnecting the pressurizing flow channel and the water outlet cavity is arranged between the pressurizing flow channel and the water outlet cavity. The water inlet connector is provided with a second water inlet one-way valve, and the pressurizing flow channel and the water inlet cavity are communicated with or disconnected from the water inlet end through the second water inlet one-way valve. The handheld high-pressure cleaning machine is provided with the single-plunger high-pressure self-priming pump. By means of the mode, according to the single-plunger high-pressure self-priming pump and the handheld high-pressure cleaning machine, through cooperation of the first water inlet one-way valve, the second water inlet one-way valve and the plunger, the pressure in the water outlet cavity is increased, and the self-priming efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of self-priming pumps, in particular to a single plunger high-pressure self-priming pump and a hand-held high-pressure cleaning machine. Background technique [0002] A high-pressure cleaner is a machine that uses a power device to make a high-pressure plunger pump generate high-pressure water for washing the surface of an object. The power device can be an electric motor, a gasoline engine or a diesel engine. High-pressure cleaners can peel off and wash away dirt to achieve the purpose of cleaning the surface of objects, so they are widely used in various fields. [0003] When the high-pressure cleaner is working, the water in the bucket is sucked into the pump through the reciprocating movement of the plunger, and then sprayed out. The common single plunger pump in the market, the pressure and flow of self-absorbing water can only reach the working pressure of tap water. The efficiency of pressure and flow is about...

AI Technical Summary

Problems solved by technology

[0003] When the high-pressure cleaner is working, the water in the bucket is sucked into the pump through the reciprocating motion of the plunger, and then sprayed out. The common single plunger pump in the market can only work when the pressure and flow of self-absorbing water reach the level of tap water. The efficiency of pressure and flow is about 50%, and the self-priming efficiency is low, which cannot meet the needs of use

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