Pneumatic diaphragm pump is a new type of conveying machinery, is currently the most novel kind of pump. The use of compressed air as the power source, for a variety of corrosive liquids, with particles of liquid, high viscosity, volatile, flammable, highly toxic liquid can be smoked exhausted.
Pneumatic diaphragm pump has four materials: plastic, aluminum, cast iron, stainless steel. Diaphragm pumps are based on different liquid medium were nitrile rubber, neoprene, fluorine rubber, PTFE, polyhexamethylene. To meet the needs of different users. Placed in a variety of special occasions, used to pump a variety of conventional pump can not be aspirated medium, have achieved satisfactory results.
First, the pneumatic diaphragm pump applications
Due to the above characteristics of pneumatic diaphragm pumps, diaphragm pumps in the world have been invaded into the market of other pumps since their inception and are absolutely dominant. In other industries, such as environmental protection, wastewater treatment, construction, sewage disposal, Refinement is expanding its market share, and has other pumps irreplaceable status. The advantages of pneumatic diaphragm pumps are:
1. Due to the air power, the flow rate will automatically adjust with the change of back pressure (outlet resistance), which is suitable for medium and high viscosity fluid. The centrifugal pump is characterized by water as a benchmark set, if the viscosity is slightly higher for the fluid, you need to support reducer or inverter, the cost has greatly increased, the same is true of the gear pump.
2. In a flammable environment with pneumatic pump reliable and low cost, such as fuel, gunpowder, explosives, because:
First, there is no possibility of sparking after grounding;
Second, there is no heat in the work and the machine will not overheat.
Third, the fluid does not overheat because the diaphragm pump agitates the fluid to a minimum.
3. Work in harsh places, such as construction sites, industrial and mining wastewater discharge, due to the impurities in the sewage and more complex components, the pipeline easy to plug, so that the formation of the pump on the load is too high, the motor heat loss. Pneumatic diaphragm pump through the particles and the flow rate is adjustable, the pipeline automatically stop blocked to flow.
4. Another diaphragm pump is small and easy to move, do not need the foundation, covers an area of small, safe and economical. Can be used as mobile material transfer pump.
5. In hazardous, corrosive material handling, the diaphragm pump completely separates the material from the outside world.
6. Or some experiments to ensure that no impurities pollute the raw materials.
7. Can be used to transport more volatile chemical properties of fluids, such as: photographic materials, such as flocculation. This is because diaphragm pumps have low shear forces.
Second, the working principle of pneumatic diaphragm pump
1. Compressed air as power.
2. Is a volumetric displacement pump caused by the reciprocating deformation of the diaphragm, its working principle is similar to the piston pump, the characteristics of the working principle of the diaphragm pump, diaphragm pump has the following characteristics:
(1) the pump will not overheat: compressed air as a driving force, when the exhaust is an expansion heat absorption process, pneumatic pump temperature is reduced, no harmful gas emissions.
(2) does not produce sparks: pneumatic diaphragm pump without electricity as power, grounding and then prevent the electrostatic spark.
(3) can contain particles of liquid: Because of the volume of work and imports for the ball valve, so it is not easy to be blocked.
(4) shear force on the material Polar: How to breathe into the work how to spit it out, so the minimum agitation of the material, suitable for the transport of unstable substances.
(5) The flow rate can be adjusted, you can install the throttle at the material outlet to regulate the flow.
(6) Self-priming function.
(7) It is air-transportable without danger.
(8) can dive work.
(9) The fluids that can be delivered are extremely wide, ranging from low viscosity to high viscosity, from corrosive to viscous.
(10) There is no complicated control system, no cables, fuses and so on.
(11) small size, light weight, easy to move.
(12) Maintenance is easy without lubrication, and will not pollute the work environment due to drip.
(13) The pump is always efficient and will not be reduced by wear.
(14) 100% energy utilization, when shutting down the outlet, the pump will stop automatically and set to move, wear, overload and fever.
(15) no dynamic seal, easy maintenance to avoid leakage. No dead spots at work.
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