China Pumping Solutions Leader
The comparison between diaphragm pump and plunger pump in coating machinery is that the surface is fine and smooth, the adhesion is strong, the coating loss is less, and it is widely used in construction machinery, ships, furniture and other industries.
High pressure airless spraying has the advantages of high efficiency, fine and smooth surface, strong adhesion and less coating loss, and is widely used in construction machinery, ships, furniture and other industries.
High pressure airless spraying machine is divided into pneumatic airless spraying machine, electric airless spraying machine (plunger pump) and electric airless spraying machine (diaphragm pump), because the pneumatic airless spraying machine needs to bring compressed air source and limit the use of pneumatic spraying machine.
Now only the electric plunger airless spray machine and electric diaphragm airless spray machine for comparison, the plunger pump is the direct current motor drive the plunger repeated movement to inhale the paint, pressurized back out, because its plunger exposed, and the plunger works in the paint, the plunger wear very fast under the coating grinding, once equipped with a large diameter nozzle, the plunger reciprocating frequency increases, aggravate the plunger wear, The machine has a short life. The replacement of the plunger is very expensive, and if the voltage is abnormal, it will directly lead to the abnormal working direct current. In addition, due to the large back and forth motion, the working pulsation of the plunger pump is very large, making the spraying unstable, and the flatness of the wall sprayed by the paint is not good enough. But the plunger pump initial suction faster is its advantage.
Diaphragm airless spray machine (diaphragm pump), its design is based on the plunger pump has been a greater improvement, the principle is driven by an electric motor piston reciprocating work (note, the piston does not directly contact the paint), and then push the diaphragm movement, the paint is absorbed and pressurized and pushed out through the nozzle spray to the coating object, because its piston in the anti-wear oil work, the working environment is greatly optimized. The life of the piston is greatly improved, and the piston is not easily damaged after the penetration hardening treatment, and the high anti-twist diaphragm made of polymer materials further improves the life of the diaphragm pump. Reliable operation is another advantage of diaphragm pump, the failure rate is extremely low, the voltage is required to the bottom, the environment is required to the bottom, the maintenance is easy, and the maintenance cost is only about one-fifth of the plunger pump.
The diaphragm pump is cost-effective, and its excellent performance-price ratio will promote the promotion of the diaphragm pump.
