High pressure washer is a machine that uses high power plunger pump to produce high pressure water to wash the surface of the object. It can peel off dirt and wash away, and achieve the purpose of cleaning the surface of objects. Because the high-pressure water column is used to clean up the dirt, high-pressure cleaning is also one of the world's recognized scientific, economical and environmentally friendly cleaning methods. It can be divided into cold water pressure washer, hot water pressure washer, motor driven high pressure washer, gasoline engine driven high pressure washer and so on.
High-pressure cleaners are mainly used in the following areas:
1. Cleaning and maintenance of various motor vehicles, engineering vehicles, engineering machinery and agricultural machinery supporting products, such as washing cars, bulldozers, concrete mixers, tractors, etc. It is an ideal cleaning tool for individuals and small vehicle maintenance units to clean cars and motorcycles.
2. The exterior walls, floors, baths, and swimming pools of buildings are particularly effective for cleaning doors, windows, floors, toilets, oil, and corners that are difficult to clean manually.
3. Disinfection and cleaning of food processing plants, food processing machinery, and kitchens of hotels and restaurants.
4. Ultra-high pressure cleaners over 500bar can be used for concrete chiseling, and high-pressure cleaners with higher pressures can even cut and chisel various types of concrete.
The high-pressure pump is the core component of the high-pressure cleaner, so we usually pay special attention to maintaining and maintaining the high-pressure pump so that it is always in good working condition. When a fault occurs, it should be analyzed and judged in time. There are many different reasons that can cause the pump to be damaged. The most common is incorrect use.
For example, unstable water supply and sudden increase in water temperature may damage the high-pressure pump. Both conditions may cause cavitation of the bubble. The use of pressures exceeding the rated parameters, or the addition of too viscous cleaning agents, and the water inlet pipes without filter joints, may cause damage to the high pressure pump. Sewage and chemical solvents cannot enter the pump body, nor can it be used in a dusty environment. Improper adjustment of the pressure relief valve may cause high pressure peaks exceeding the design pressure, which will cause greater damage to the copper pump head connection. Another common fault is that the valve of the washing machine is worn due to the small particles mixed in the water source, which needs attention.
Proper maintenance and good operating habits can extend the life of the pump. We must take care to avoid damage to the high-pressure pump due to air cavitation. Cavitation is the formation and collapse of bubbles dissolved in water. It can cause a variety of wear and damage to material surfaces. The more obvious sign of cavitation is the appearance of percussions. If cavitation occurs, check the pressure washer system for the following problems: the size of the water inlet of the water pipe does not meet the standard requirements; the amount of water is obviously insufficient; the length of the water pipe exceeds the specified parameters; the water pipe has an excessively large angle And there are too many elbow connections; there is air leakage in the inlet pipe; abnormal increase in temperature and viscosity of the inlet water flow; blockage of the inlet filter.
The core of the high-pressure cleaner is a high-pressure pump, either a piston pump or a plunger pump. Piston pumps are more common because they work more efficiently and have a longer service life. The pistons are generally made of ceramic materials and have a large hardness. Easy to wear, piston pump usually moves a piston back and forth. Its characteristic is that the capacity of the high-pressure pump depends on the speed of the pump. The pump must make the same amount of water enter and eject. When the piston moves backward, water is drawn into the sealed cavity through the water inlet valve, and when the piston moves forward, it forces the water to flow to the pump outlet through the water outlet valve. We need to understand these operating principles and use them well. High-speed pumps produce less pressure loss and require less starting torque. However, it can cause faster wear, less inhalation, and sometimes is noisier and can be damaged. We need to be clear about this.
Most of the failures of high-pressure cleaners are not caused by high-pressure pumps. Common failures are caused by the wear of components or parts. Insufficient water intake in the pump is the main reason for early failure of the pump. The inlet pipe is not suitable for sufficient water to enter. The pump causes cavitation. Cavitation causes a small explosion of the gas mixed in the water to cause overpressure damage, causing wear on the piston surface. The high-pressure pump should be regularly maintained and maintained to ensure the normal operation of the high-pressure cleaner.