The selection of Pneumatic diaphragm pump

Pneumatic diaphragm pump, is now very common use of a conveying machinery and equipment, and by the industry's recognition and trust.

Often people will be confused with pneumatic diaphragm pumps and screw pumps, so what are the differences between pneumatic diaphragm pumps and screw pumps, how to choose it.

People will be confused between the two, certainly because there are the same characteristics, but the fact that the two are also very different.

The pneumatic diaphragm pump is powered by compressed air to complete the work, in the process is not required to use electricity, but also to reduce the accident caused by electric shock. So that the safety of the pneumatic diaphragm pump will be better, can be effective anti-explosion and anti-static, it is also good anti-corrosion performance, can be a certain resistance to the corrosion of chemical substances.

The working principle of the screw pump and gear pump is similar, but in the structure of the screw instead of gear, but it needs the working power is electricity. It is also because the motor is needed to complete the work, so in the process of working, it will generate a certain amount of heat because of friction.

The flow rate of the pneumatic diaphragm pump is adjustable and is adjusted at the material outlet by adding a throttle valve to adjust the flow rate.

The flow of the screw pump is relatively smooth, so it will have less vibration and lower noise. In addition, the operation process of the pneumatic diaphragm pump is relatively simple, it does not have a complex control system, and there are no cables and fuses or other substances. But on the contrary, the operation of pneumatic diaphragm pumps will be a little more complex, from processing to assembly requirements are very high. As for how to choose actually this depends on the actual needs of the industry, for their own actual needs to choose, choose the right industry, which is important.

The above is about the pneumatic diaphragm pump and screw pump what are the differences between the introduction of different two mechanical equipment, there will certainly be many differences, just their role is the same. I believe that after people understand the difference, they know how to choose the right equipment, the key point is still to choose according to their actual situation, so as to better meet the needs.

First, the screw pump and diaphragm pump comparison screw pump has a very strong ability to transport abrasive fluids. Pneumatic diaphragm pumps are another option, and both have the advantage of a small footprint. However diaphragm pumps generate significant vibration that spreads through the pipework, causing it and the infrastructure to vibrate. Vibration buffers are almost always installed with diaphragm pumps, and their failure, jamming, inaccurate positioning, etc. can cause problems throughout the system. Progressive cavity pumps, however, are vibration-free and run smoothly and quietly.

Secondly, the advantages of the screw pump screw pump conveying the size of the particles only affected by the overflow area, and the overflow area is easily determined on the basis of the open end of the pump. For a given required flow rate, large pumps operate at low speeds and are able to handle larger solids, with little wear due to low operating speeds. Many factors influence the rate of wear and, as an approximate empirical formula, the service life of a progressive cavity pump is set to three times the speed. A key part of a progressive cavity pump is the stator rubber bushing. Most rubber cannot be used at very high temperatures, so most progressive cavity pumps operate at temperatures below 180° F. The elastomers commonly used in progressive cavity pump liners are rubber, such as nitrile or natural EPDM. teflon has also been used, although less frequently, and is generally used at temperatures close to 300° F.

Screw pumps cannot convey corrosive chemicals. Like sulphuric acid, alkalis and similar substances, other types of pumps are used, such as pneumatic diaphragm pumps in relatively high viscosity situations.