Pneumatic diaphragm pump is a new type of conveying machinery, the use of compressed air as the power source, the use of the diaphragm back and forth within the cylinder to promote the work, to achieve the purpose of conveying a variety of media. Media that can be delivered: Pneumatic diaphragm pumps are used to convey a variety of corrosive, granular fluids, as well as high-densities, volatile, flammable and highly toxic liquids. The choice of materials: (1) shell materials used are: aluminum, cast iron, stainless steel. (2) Diaphragm selection of materials are: NBR, neoprene, fluorine rubber, PTFE. Pneumatic diaphragm pump works: Two symmetrical working chamber in the pump, each fitted with a flexible diaphragm, the connecting rod will be two pieces of diaphragm together, the compressed air from the pump inlet into the valve after the valve , To promote the action of the diaphragm in the two working chambers and to drive the two diaphragms connected with the connecting rod to move synchronously. In the meantime, the gas in the other working chamber exits the pump from the back of the diaphragm, and once it reaches the end of its stroke, the valve automatically introduces compressed air into the other working chamber to push the diaphragm in the opposite direction It forms a synchronous reciprocation of two diaphragms. Each working chamber is provided with two one-way ball valves. The reciprocating movement of the diaphragm causes a change in the volume of the working chamber, forcing the two one-way ball valves to alternately open and close, thereby continuously sucking and discharging the liquid. Uses: (l) can suck a variety of sewage. (2) can suck a variety of chemical etchant, oil, mud, grease cleaning. (3) can suck a variety of highly toxic, flammable, volatile liquids. (4) can suck a variety of strong acid, alkali, strong corrosive liquid. (5) can suck a variety of high temperature liquid, the maximum temperature resistant to 150 ℃. (6) can be used as a variety of solid-liquid separation equipment before the pressure transmission equipment. Pneumatic diaphragm pump features: (I) without irrigation, suction up to 7m, lift up to 50m, outlet pressure) 6kgf / CmZ. (2) good flow properties, allowing the maximum particle diameter of 10mm. Pumping mud, impurities, the pump wear little. (3) head, flow through the valve opening to achieve stepless regulation (pressure regulation in a 7kgf / cmZ). (4) The pump has no rotating parts and no shaft seal. Reciprocating by a pair of diaphragm, pumping a variety of media, because of the pump moving parts and working media completely separated, so that the media will not leak out to avoid environmental pollution and personal hazards. (5) Do not use the power supply, can be used in flammable and explosive places, safe and reliable. (6) Can be immersed in the medium instead of the submersible pump pumping liquid. (7) open, stop pump, just open and close the gas valve can be operated. The pump will not be damaged even if there is no medium pumping or a sudden stop due to unforeseen circumstances. Once overload, the pump will automatically shut down, with self-protection. When the load is restored to normal, but also automatically start running. (8) Simple structure, less wearing parts. Diaphragm pump structure is simple, easy installation and maintenance. Pump delivery medium will not come into contact with the valve, connecting rod and other moving parts, to avoid corrosion and wear parts. (9) can deliver more than the liquid. (10) Do not use oil lubrication, even idling, the pump has no effect.
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