High-pressure airless spraying high efficiency, the surface is fine and smooth, strong adhesion, paint loss less and get the construction machinery ship furniture and other industries widely used. High-pressure airless sprayer is divided into pneumatic airless sprayer, electric airless sprayer (plunger pump) and electric airless sprayer (diaphragm pump), due to the pneumatic airless sprayer need to be restricted with compressed air source The use of pneumatic sprayer. Now only the electric piston airless sprayer and electric diaphragm airless sprayer for comparison, the piston pump is the DC motor driven piston reciprocating movement of the paint inhalation, pressure and discharge, due to its plunger exposed, and the plunger Working in the paint, the plunger wear very fast in the paint grinding action, once equipped with a larger nozzle, the plunger reciprocating frequency increased, exacerbating the plunger wear, the machine life is short. The replacement of the plunger price is very expensive, if the voltage is not normal will also lead directly to the working DC is not normal. In addition, due to the large back and forth reciprocating motion, plunger pump work pulsation, making the spray instability, spray paint on the wall surface roughness is not good enough. However, the initial suction plunger pump is its strength. Diaphragm airless sprayer (diaphragm pump), the design is based on the plunger pump has been greatly improved, the principle is driven by a motor piston reciprocating work (note that the piston does not directly contact with the paint), and then promote the diaphragm movement , The paint will be launched after pressure absorption, spraying through the nozzle coating objects, due to its piston in the wear-resistant oil work environment greatly optimized, greatly improved life expectancy, after the hardened piston is harder to wear, plus High-resistant materials made of high tensile membrane diaphragm diaphragm pump to further enhance the life expectancy. Reliable operation is another advantage of the diaphragm pump, the failure rate is extremely low, the voltage requirements at the end of the environmental requirements at the end, easy maintenance, maintenance costs only about one-fifth of the plunger pump. Diaphragm pump cost-effective, its excellent cost performance will promote the diaphragm pump promotion.
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