Working principle and applicable occasion of pneumatic diaphragm pump

Pneumatic diaphragm pump is a new type of conveying machine and it is the most novel type of pump in China. Compressed air is used as the power source. For all kinds of corrosive liquids, liquids with particles, liquids with high viscosity, volatile, flammable, and highly toxic can all be pumped out.

The pneumatic diaphragm pump has four materials: plastic, aluminum alloy, cast iron, and stainless steel. Diaphragm pumps use NBR, chloroprene rubber, fluoroelastomer, Teflon, and polytetra-ethylene glycol, respectively, according to different liquid media. To meet the needs of different users. Placed in a variety of special occasions, used to pump a variety of conventional pump can not pump the media, have achieved satisfactory results.
First, the application of pneumatic diaphragm pump
Due to the above features of the pneumatic diaphragm pump, diaphragm pumps have been gradually invading the market of other pumps since birth and occupying part of them. Such as: spray paint, ceramic diaphragm pump has occupied an absolute dominant position, and in other industries, such as environmental protection, wastewater treatment, construction, sewage, fine chemicals are expanding its market share, and has other pumps can not be replaced The status. The advantages of pneumatic diaphragm pumps are:

1. Due to the use of air as the power, the flow is automatically adjusted with the change of back pressure (outlet resistance) and is suitable for medium and high viscosity fluids. The operating point of the centrifugal pump is set based on water. If it is used for a fluid with a slightly higher viscosity, a reducer or frequency converter is required. The cost is greatly increased. The same is true for a gear pump.

2, in the flammable and explosive environment with a pneumatic pump reliable and low cost, such as fuel, gunpowder, explosives, because: First, after the ground is not possible to produce sparks; second, no heat in the work, the machine does not Overheating; Third, the fluid will not overheat because the diaphragm pump has minimal agitation of the fluid.
3. In places with bad construction sites, such as waste water from construction sites, industrial and mining wastes, and because of the large amount of impurities and complex components in the sewage, the pipelines are easy to be clogged. This leads to an excessive load on the electric pump and the motor is vulnerable to heat generation. Pneumatic diaphragm pump can pass through the particles and the flow can be adjusted. When the pipe is blocked, it stops automatically until it is smooth.
4. In addition, the diaphragm pump is small in size and easy to move, requires no foundation, occupies minimal ground, and is simple and economical to install. Can be used as a mobile material pump.
5. In the treatment of hazardous and corrosive materials, the diaphragm pump can completely separate the material from the outside.
6, or some tests to ensure that no impurities contaminate the raw materials.
7, can be used to transport fluids with relatively unstable chemical properties, such as: photosensitive materials, flocculants and so on. This is because the diaphragm pump has a low shear force and a small physical impact on the material.
Second, the working principle of pneumatic diaphragm pump 1, compressed air power.
2, is a volumetric pump caused by diaphragm reciprocating deformation volume change, its working principle is similar to the plunger pump, due to the characteristics of the diaphragm pump, so the diaphragm pump has the following characteristics:
(1) Diaphragm pump will not be overheated: Compressed air as a power, in the exhaust is a process of expansion and absorption of heat, the temperature of the pneumatic pump is reduced, no harmful gases discharged.
(2) Diaphragm pumps will not generate EDM: Pneumatic diaphragm pumps do not use electric power, and they prevent static sparks after they are grounded. (3) Diaphragm pumps can pass through granular liquids: Because they work in positive displacement and the inlet is a ball valve, it is not easy to be Blocking.
(4) The diaphragm pump has very low shearing force on the material: how to suck in when working, and how to spit it out, so that the agitation of the material is minimal, suitable for the transportation of unstable substances (5) The flow rate of the diaphragm pump can be adjusted, and the material can be exported Throttle valve installed to adjust the flow.
(6) The diaphragm pump has self-priming function.
(7) The diaphragm pump can be operated without danger.
(8) The diaphragm pump can work in diving.
(9) Membrane pumps can deliver a wide range of fluids, from low viscosity to high viscosity, and get viscous from corrosion.
(10) Diaphragm pumps have no complicated control system, no cables, fuses, etc.
(11) Diaphragm pumps are small, lightweight and easy to move.
(12) Diaphragm pumps do not require lubrication and are easy to maintain. They do not pollute the working environment due to drip leaks.
(13) Diaphragm pump can always maintain high efficiency and will not be reduced due to wear.
(14) The diaphragm pump uses 100% of energy. When the outlet is closed, the pump automatically stops and the equipment moves, wears, overloads, and generates heat. (15) The diaphragm pump does not have a dynamic seal. Maintenance is simple and leak-proof is avoided. There is no dead point at work.