After a fire accident, the cleaning of the fire hose is a difficult problem. If the hose cannot be cleaned effectively, the firefighters will not be able to carry out the next fire fighting and disaster disposal smoothly.

For example, fire hoses will be stained with garbage, mud, oil stains, chemicals, etc. during the process of laying water gun positions at the scene of a fire accident. After the firefighting mission is over, it needs to be cleaned manually after returning to the team, which requires a lot of labor and low efficiency. , the waste of water resources is serious; in recent years, petrochemical fires have occurred frequently, and the fire brigades in petrochemical jurisdictions have been equipped with a remote water supply hose with a diameter of 150 mm, 300 mm and 400 mm. After the fire, the remote water supply hose is contaminated A large amount of oily substances W and toxic and harmful substances, if not cleaned in time, will cause corrosion to the hose, and will be extremely unsafe and harmful to the human body when used again.

In recent years, with the enhancement of people's awareness of environmental protection and the continuous maturity of high-pressure water jet technology, more and more high-pressure water jet technology has been applied to the cleaning industry. It uses high-pressure water generating equipment to generate off-pressure water, and converts the pressure into a highly concentrated water jet flow through the nozzle, which impacts the surface of the object to be cleaned in a positive or tangential direction, so that one or more materials (adhesion layer) from another The surface of an object (substrate) is detached for cleaning purposes.