Claw type dry vacuum pump is a variable capacity dry vacuum pump with a claw type rotor. As an important member of the industrial vacuum pump family, although not widely discussed, the characteristics and advantages of claw pumps are actually very obvious. Today, we will compare claw pumps with traditional water ring vacuum pumps to help everyone gain a deeper understanding of claw vacuum pumps.
1, Comparison of Vacuum Stability
As the operating time of the water ring pump increases, the organic solvent content in the circulating working fluid gradually increases, resulting in a decrease in the maximum vacuum degree and pumping rate of the vacuum unit. The claw type vacuum pump will not encounter this problem due to the absence of water and oil.
2, Comparison of corrosion resistance performance of equipment
When acidic gas is present in the pumping medium, due to the presence of water in the water ring pump, the acidic gas dissolves in water and forms an acid solution, which has a corrosive effect on the pump body. And the claw pump is waterless, so there won't be this problem.
3, Comparison of energy-saving and emission reduction effects
The water ring pump relies on the impeller to do work on water centrifugation, forming liquid to gas compression, thereby achieving the pumping effect. Therefore, during the operation of the water ring vacuum pump, the energy consumption mainly generated by the impeller to water centrifugation is maintained at a high level throughout the entire working process. The claw pump adopts frequency conversion control, which maintains a relatively constant energy consumption at low vacuum; The main energy consumption of a claw pump is the energy consumed by the pump's own rotation, which is lower compared to a water ring pump.
4, Comparison of sewage discharge
The water ring pump has water present, and sewage discharge cannot be avoided, which pollutes the environment and is difficult to treat with high costs. And the claw pump does not discharge sewage.
5, Comparison of exhaust gas recovery
The exhaust gas of the water ring pump contains water generated during operation and cannot recover pure exhaust gas. The claw pump can achieve pure exhaust gas recovery. Especially when used in industries such as petroleum and pharmaceuticals, it does not produce pollution from sewage and exhaust gas.
The vacuum pump has the characteristics of high pumping efficiency, strong steam and particle processing ability, perfect matching of process vacuum degree control, and 100% cleanability of the cavity.
Widely used in: petrochemical industry (vacuum evaporation, vacuum drying), pharmaceutical industry (vacuum evaporation/adsorption/desorption), food industry (vacuum dehydration/drying/preservation), research institutes (negative pressure filtration, environmental simulation), electronic photovoltaics, aerospace, metallurgy industry, etc.
