Pneumatic diaphragm pump is a new type of conveying machinery, which is the most novel type of pump in China. Using compressed air as the power source, for all kinds of corrosive liquid, with particles of liquid, high viscosity, volatile, flammable, highly toxic liquid, all can be pumped out.
The pneumatic diaphragm pump has four kinds of materials: plastic, aluminum alloy, cast iron, stainless steel. According to different liquid media, the diaphragm pump adopts butyl rubber, chloroprene rubber, fluorine rubber, polytetrafluoroethylene and polyethylene tetrafluoroethylene. To meet the needs of different users. In all kinds of special occasions, it is used to pump the medium which can not pump the conventional pump, and the result is satisfactory.
1. Suitable for pneumatic diaphragm pump.
Since the pneumatic diaphragm pump has the above characteristics, the diaphragm pump in the world has been gradually encroach on the market of other pumps since its birth and occupies a part of it. Such as: painting, ceramics in the diaphragm pump has been occupies the absolute dominant position, and in some other industries, such as environmental protection, wastewater treatment, construction, sewage, fine chemical is expanding its market share, and can not be replaced with other pump status. The advantages of pneumatic diaphragm pump are:
1. Due to the use of air for power, the flow is adjusted automatically with the change of back pressure (exit resistance), which is suitable for medium and high viscosity fluids. The centrifugal pump is a working point of water as a benchmark to set a good, if slightly higher viscosity fluid, requires the supporting reducer or the frequency conversion governor, cost is greatly raised, the gear pump is the same.
2. The pneumatic pump is reliable and low cost in the flammable and explosive environment, such as fuel, gunpowder and explosives, because: first, there is no spark after grounding; Second, there is no heat in the work, the machine will not overheat; Third, the fluid does not overheat because the diaphragm pump is the least agitated.
3. The site is poor, such as construction site and mine.
The discharge of waste water, due to the large amount of impurities in the waste water and the complicated composition, the pipeline is easy to be blocked, so that the electric pump can form a high load, and the electric motor can be easily damaged. The pneumatic diaphragm pump can be adjustable through the particle and the flow can be adjusted automatically when the pipe is blocked.
4. In addition, the diaphragm pump is small and easy to move, no foundation is needed, the ground is small and the economy is easy to install. Can be used as mobile material transfer pump.
5. In the treatment of hazardous and corrosive materials, the diaphragm pump can completely separate the material from the outside.
6. In some experiments, there is no impurity contamination material.
7. It can be used for the transport of unstable fluids such as photosensitive materials and flocculation. This is because the diaphragm pump has a low shear force and has little physical impact on the material.
Ii. Operating principle of pneumatic diaphragm pump.
1. Compressed air is the driving force.
2. It is a volumetric pump caused by the reciprocating deformation of the diaphragm, which is similar to the plunger pump. Because of the operating principle of the diaphragm pump, the diaphragm pump has the following characteristics:
(1) the pump will not overheat: the compressed air is the power, and in the exhaust, it is a process of expansion and heat absorption, while the temperature of the pneumatic pump is reduced, and no harmful gas is discharged.
(2) there is no electric spark: the pneumatic diaphragm pump does not use electric power for power, and the static spark is prevented after grounding.
(3) it can be filled with granular liquid: it is not easy to be blocked because of the volume type work and the inlet is the ball valve.
(4) the shear force of the material is extremely low: how is it sucked in at work, so the agitation of the material is minimal, which is suitable for the transportation of unstable materials?
(5) the flow can be adjusted, and the throttle valve can be installed at the outlet of the material to regulate the flow.
(6) self-priming function.
(7) it can be run without danger.
(8) you can dive for work.
(9) the fluid that can be transported is extremely wide, from low viscosity to high viscosity, and from corrosive to viscous.
(10) no complicated control system, no cable, fuse, etc.
(11) small size, light weight, easy to move.
(12) it is easy to maintain without lubrication, and it will not pollute the working environment.
(13) the pump is always efficient and will not be reduced by wear.
(14) 100% energy utilization. When the outlet is closed, the pump will stop automatically, and the equipment will move, wear, overload and heat.
(15) there is no dynamic sealing, and the maintenance is easy to avoid leakage. There are no dead spots at work.
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