Water Ring Vacuum Pump working principle

Vacuum pumps (mechanical capacity-increasing pumps) used for higher vacuum can not directly discharge the air. For example, direct discharge of the air will cause the pressure difference between the suction and exhaust ports of Roots vacuum pump to be too large, thus overloading Roots vacuum pump. If the power of the motor of the vacuum pump is increased, the weak gap between the rotors of Roots vacuum pump will be quickly caused by the overheating of the vacuum pump. The heat contracted and stuck. In order to ensure that the vacuum pump can achieve a higher vacuum, it is necessary to ensure the clearance between the vacuum pump rotors.rotary-vane-vacuum-pump-in-laboratory

Therefore, the vacuum pump must be equipped with a front-stage pump when it is in operation. When the front-stage pump pumps the fragmentary internal pressure into a certain scale, the vacuum pump can be started again, so as to prevent the vacuum pump from overloading. The front stage pump can choose water (liquid) ring vacuum pump, rotary vane vacuum pump, slide valve vacuum pump, reciprocating vacuum pump and other vacuum pumps that can directly discharge the atmosphere.metal-oil-diffusion-pump-achieves-high-vacuum

Under normal conditions, it is more disadvantageous for vacuum units to choose water ring pump as the front pump than other vacuum pumps. This is mainly because it can extract a large number of condensable steam, especially when the power of removing condensable steam from mechanical vacuum pumps of gas-ballast and oil seal is not enough, or the solvent used can make the pump oil better without performance, or It is more obvious that vacuum fragmentation does not allow oil purification.how-to-vacuum-pump-select