Brief introduction of applicable occasions of pneumatic air operated diaphragm pump
2020/07/19 09:13:26
AODD pumps also called air operated diaphragm pump, it is a new type of conveying machinery, and it is currently the most novel type of pump in China. Using compressed air as the power source, all kinds of corrosive liquids, liquids with particles, high-viscosity, volatile, flammable, and highly toxic liquids can be exhausted.
The pneumatic diaphragm pump has four materials: plastic, aluminum alloy, cast iron, and stainless steel. Diaphragm pumps use nitrile butadiene rubber, neoprene, fluorine rubber, polytetrafluoroethylene, and polyhexaethylene according to different liquid media. To meet the needs of different users. It is installed in various special occasions and used to pump the medium that cannot be pumped by conventional pumps, and has achieved satisfactory results.
1. Applicable occasions of air operated diaphragm pumps Due to the above characteristics of pneumatic diaphragm pumps, diaphragm pumps in the world have gradually invaded the market of other pumps since their birth, and occupy a part of them. For example, the diaphragm pump has an absolute dominant position in the painting and ceramic industries, while in some other industries, such as environmental protection, wastewater treatment, construction, sewage, and fine chemicals, it is expanding its market share, and other pumps are irreplaceable. Status. The advantages of pneumatic diaphragm pumps are: 1. Since air is used as power, the flow rate is automatically adjusted with the change of back pressure (outlet resistance), which is suitable for medium and high viscosity fluids. The working 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, which greatly increases the cost. The same is true for gear pumps. 2. It is reliable and low-cost to use pneumatic pumps in flammable and explosive environments, such as the transportation of fuel, gunpowder, and explosives, because: first, it is impossible to generate sparks after grounding; second, there is no heat generation during work, and the machine does not It will overheat; third, the fluid will not overheat because the diaphragm pump has the least agitation to the fluid. 3. In places with harsh construction sites, such as wastewater discharge from construction sites and industrial mines, due to the large amount of impurities and complex components in the sewage, the pipeline is easy to be blocked, which will cause excessive load on the electric pump, and the motor will be easily damaged due to heat. The pneumatic diaphragm pump can pass particles and has an adjustable flow rate. When the pipeline is blocked, it will automatically stop to unobstructed. 4. In addition, the diaphragm pump is small in size and easy to move, does not require foundation, occupies a very small ground, and is easy and economical to install. Can be used as a mobile material transfer pump. 5. In the treatment of hazardous and corrosive materials, the diaphragm pump can completely isolate the materials from the outside world. 6. Or ensure that no impurities contaminate raw materials in some tests. 7. It can be used to transport fluids with relatively unstable chemical properties, such as photosensitive materials, flocculants, etc. This is because the shear force of the diaphragm pump is low and the physical impact on the material is small. 2. Working principle of AODD PUMP 1. Compressed air is the power. 2. It is a positive displacement pump whose volume changes caused by the reciprocating deformation of the diaphragm. Its working principle is similar to that of a plunger pump. Due to the characteristics of the working principle of the diaphragm pump, the diaphragm pump has the following characteristics: (1) The pump will not overheat: compressed air is used for power, and it is a process of expansion and heat absorption during exhaust. The temperature of the pneumatic pump is reduced when it is working, and no harmful gas is discharged. (2) No electric sparks: The pneumatic diaphragm pump does not use electricity as power, and prevents static sparks after being grounded (3) Liquids containing particles can be passed: because the volumetric work and the inlet is a ball valve, it is not easy to be blocked. (4) The shearing force to the material is extremely low: how to suck in and out when working, so the agitation to the material is minimal, suitable for the transportation of unstable materials (5) The flow can be adjusted, and a throttle valve can be installed at the material outlet to adjust the flow. (6) It has the function of self-priming. (7) Can run dry without danger (8) Can dive for work. (9) The fluid that can be transported is extremely wide, from low viscosity to high viscosity, and viscous from corrosive. (10) No complicated control system, no cables, fuses, etc. (11) Small size, light weight and easy to move. (12) There is no need for lubrication, so it is easy to maintain and will not pollute the working environment due to dripping. (13) The pump can always maintain high efficiency and will not decrease due to wear. (14) 100% energy utilization, when the outlet is closed, the pump automatically stops, the equipment moves, wears, overloads, and heats up (15) There is no dynamic seal, easy maintenance to avoid leakage. No dead spots when working
