High-pressure water cleaning device

Abstract

A high-pressure water cleaning device includes a filter, a high-pressure plunger pump, a safe overflow valve, a spray gun and a connection pipeline, an overflow pipeline is connected between a water inlet of the high-pressure plunger pump and a water outlet of the safe overflow valve, the overflow pipeline is equipped with a transition water tank, a liquid level switch is installed in the transition water tank, and the liquid level switch keeps linkage with a switch of the plunger pump of the high-pressure water cleaning device. With the transition water tank installed on the overflow pipeline, the high-pressure water cleaning device has the benefits as follows: flux is directly monitored by the liquid level switch in the transition water tank, the high-pressure water cleaning device is shut down when the liquid level in the tank is lower than a predetermined value, there is no demand on a water feeding pressure is not demanded, and the cleaning device is available by ensuring the water inflow; the overflow water runs through the stainless steel transition water tank to be cool and buffered, temperature of the water rises very slowly; impact of water is eliminated by buffering of the air; a breather valve automatically opens when the water level of the water tank declines, the water tank is communicated with the atmosphere, the water inlet of the high-pressure plunger pump hasnot negative pressure, and cavitation can be avoided.

Description

technical field [0001] The invention relates to a high-pressure water cleaning device, in particular to a high-pressure water cleaning device with the function of water inflow protection. Background technique [0002] refer to figure 1 As shown, the high-pressure water cleaning equipment is mainly composed of a filter 10, a high-pressure plunger pump 20, a spray gun 30, a connecting pipeline 40 between various devices, and a safety overflow valve 50. In order to control the water pressure of the outlet water at the set pressure state Generally, a safety overflow valve 50 is installed at the water outlet of the high-pressure plunger pump 20, and the pressure of the outlet water is controlled by adjusting the safety overflow valve 50. When the outlet water pressure exceeds the set value, the safety overflow valve 50 plays a role. The function of overflow and pressure relief, and discharge through the overflow pipeline 51 of the overflow water outlet of the safety overflow val...

AI Technical Summary

Problems solved by technology

[0004] 1. The detected pressure value may not be able to truly reflect the real-time water inflow. It often happens that the water inflow meets the requirements on site, but the water supply pressure does not reach the minimum value set by the pressure switch 21, and the equipment cannot start and run; and the water inlet pipeline The pressure will also fluctuate, which will cause frequent shutdowns of the equipment; in order to ensure the stable operation of the existing equipment, it is often necessary to install an inlet booster pump 60 to increase the inlet pressure, which increases the cost and makes the operation complicated ;

[0005] 2. At the moment when the spray gun 30 is closed, water hammer will occur, which will damage the low-pressure end components of the equipment, such as low-pressure seals, low-pressure pipelines, filters, etc.;

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