Low-pressure maintaining high-pressure washing device and low-pressure maintaining method

Abstract

The invention relates to the field of washing equipment and aims at providing a low-pressure maintaining high-pressure washing device. The low-pressure maintaining high-pressure washing device comprises a high-pressure pump which is provided with a motor. The low-pressure maintaining high-pressure washing device further comprises a low-pressure maintaining device. The low-pressure maintaining device comprises a valve body, a low-pressure maintaining valve and a control switch, wherein the valve body is provided with a pressure relief outlet, a high-pressure outlet and a high-pressure inlet communicating with an outlet hole of the high-pressure pump, the rear end of the low-pressure maintaining valve extends out of a valve rod at the rear end of the valve body, and the control switch is provided with a drive rod which is opposite to the rear end of the valve rod and is electrically connected with the motor. According to the low-pressure maintaining high-pressure washing device, when a high-pressure washing machine pauses, the high-pressure pump can achieve pressure maintaining with relatively low pressure, and no damage is caused.

Description

technical field [0001] The invention relates to the field of cleaning equipment, in particular to a low-pressure-holding-pressure high-pressure cleaning device and a low-pressure-holding method. Background technique [0002] High-pressure cleaning pumps are often used in high-pressure cleaning machines; the utility model of Chinese patent application number CN201520716500.5 discloses a new type of high-pressure cleaning pump, including outlet, inlet, bearing housing, pump shaft, motor, coupling, overflow valve, motor shaft, the outlet is set at the top of the pump body, the inlet is set at the bottom side of the pump body, the overflow valve is set at one side of the pump body, and the top side of the pump body is provided with a pressure gauge , the bearing seat is set between the pump body and the coupling, the motor shaft and the pump shaft are connected through the coupling, the motor and the pump body are both set on the base, and the top of the motor is set There is a...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiency that the high-pressure cleaning pump cannot maintain pressure at a lower pressure and is easily damaged when the high-pressure cleaning machine suspends work in the current high-pressure cleaning pump, and provides a high-pressure cleaning machine. Low-holding pressure high-pressure cleaning device and low-holding pressure method without damage to low-pressure holding

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