Pneumatic pump is a new type of conveying machinery and a novel pump in China. Using compressed air as a power source, various corrosive liquids, particulate liquids, high viscosity, volatile, flammable, and highly toxic liquids can be extracted. Pneumatic pumps were invented by American engineer Wilton and introduced to China. There are five commonly used materials: plastic, aluminum alloy, cast iron, stainless steel, and Teflon. Diaphragm pumps are made of nitrile rubber, chloroprene rubber, fluororubber, polytetrafluoroethylene, and polytetrafluoroethylene according to different liquid media. In the early days, domestic users purchased through importers' agents, which was both expensive and troublesome to maintain. With the development of industry, the market share of domestically produced pneumatic diaphragm pumps has surpassed that of imported products. It can be placed in various special occasions to pump media that conventional pumps cannot pump, achieving satisfactory results.
Working principle of pneumatic pump:
1. Compressed air is power.
2. Features
Pneumatic diaphragm pump is a type of positive displacement pump, whose volume changes due to the reciprocating deformation of the diaphragm, and its working principle is similar to that of a plunger pump. Due to its working principle, diaphragm pumps have the following characteristics:
(1) The pump will not overheat: powered by compressed air, the exhaust process is an expansion and heat absorption process, while the temperature of the pneumatic pump decreases during operation, and no harmful gases are discharged.
(2) No sparks: Pneumatic diaphragm pumps do not use electricity as power and are grounded to prevent static sparks.
(3) Can pass through liquids containing particles: not easily blocked by volume operation and inlet ball valve.
(4) Low shear force on materials: How to inhale and exhale during operation, resulting in minimal agitation of materials, suitable for the transportation of unstable substances
(5) The flow rate can be adjusted, and a throttle valve can be installed at the discharge port to regulate the flow rate.
(6) Self suction function.
(7) It can run without load without any danger.
(8) Can work underwater.
(9) It can transport a variety of fluids, from low viscosity to high viscosity, from corrosive to viscous.
(10) There are no complex control systems, cables, fuses, etc.
(11) Small size, light weight, easy to move.
(12) No need for lubrication, simple maintenance, and no pollution of the working environment due to dripping water.
(13) The pump can always maintain high efficiency and will not decrease due to wear and tear.
(14) 100% energy utilization, when the outlet is closed, the pump automatically stops, causing equipment movement, wear, overload, and heating.
(15) Non moving seal, easy to maintain, avoiding leakage. There are no blind spots at work.