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2. The heart of the washing machine is the high pressure pump. They are in an irreplaceable position. Piston pumps are the most common. Because they are more efficient and have a longer life, the pistons are usually made of ceramic and are very resistant to wear. Piston pumps are often described. Move a piston back and forth. Through a fixed seal; and the plunger pump seal is mounted on the plunger. The piston pump usually has better initial use characteristics through a smooth cylinder wall, but cannot operate with excessive pressure and has a short life. .
3. 90% failure of high-pressure cleaners is not usually caused by pumps. The most common failures are caused by wear of components or components (such as nozzle seals). Insufficient water in the pump is the primary cause of early pump failures. Improper water pipes do not allow enough water to enter the pump causing cavitation. Cavitation causes a small explosion of gas mixed with water to cause overpressure damage and wear on the piston surface.
4. The capacity of the pump depends on the speed of the pump. The pump must bring the same amount of water in and out. It does not increase or decrease the flow like a centrifugal pump. The piston pump has a very stable water flow parameter. No matter how high the pressure ejects out of the flow, the clogging of the nozzle outlet will cause the high pressure pump to bear too much pressure. Therefore, devices such as pressure relief valves are installed in the system.
In order to generate water flow, most high-pressure washers use a set of valves and pump heads to form the system. The plunger pulls water into the inlet valve and pressurizes it through the outlet valve. The valve controls water through the pump by preventing backflow.
The valve consists of a spring and a bracket, and the pressure operation is completed due to different pressure differences on both sides of the valve. When the pressure on the valve is greater than the capacity of the spring, the valve opens. On the opposite stroke, water will automatically squeeze the bracket onto the seat, keeping the valve closed and preventing backflow.
1. When the piston moves backwards, water is sucked into the sealed chamber through the inlet valve. When the piston moves forward, water is forced through the outlet valve to the outlet of the pump. Most piston pumps are double or triple. Dual piston pumps require more and more stringent system components and operators. Triple pumps are the most versatile form of pressure washers because they produce a smoother flow of water. High-speed pumps can produce less pressure loss and require less starting torque. However, it can cause faster wear, less inhalation, and can be noisy and potentially damaging.