As the name implies, the two-stage vane vacuum pump is the secondary exhaust based on the single-stage rotary vane vacuum. The structure of the two stages is basically the same. The first stage exhaust port is connected with the second stage air inlet, and then discharged after secondary compression.
In this way, after two-stage exhaust, the vacuum degree is slightly higher than that of the first stage exhaust, the sealing effect is better, and the possibility of oil return and gas return is reduced.
In terms of the structure of the rotary vane vacuum pump, in order to prevent oil return when the pump is stopped, some are equipped with check valves which can automatically cut off the oil circuit, some are equipped with inlet channel stop valves, and some are equipped with oil pumps and control structures in order to automatically cut off the gas circuit when the pump is running suddenly to keep the pump port in the state of vacuum vane vacuum pump. In terms of accessories, there are mist eliminator, odor filter, population filter for blocking broken glass, dust filter, steam condensation trap and chemical trap, and temperature control water regulating valve to control pump temperature to improve steam extraction rate and protect pump.
Double stage rotary vane vacuum pump can be widely used in refrigerator, air conditioner, light bulb, fluorescent lamp, bottle container production, electronics, metallurgy, medicine, chemical industry, oil filter, printing machinery, packaging machine and other industries. It can be used as the front stage pump of diffusion pump, roots pump, molecular pump, etc. it can be used for supporting and experimental research of electronic and medical instruments. Because the direct coupled pump has no dust pollution caused by belt friction, it is small in size, light in weight, saving in materials and improving in function, so it is widely used.
Rotary vane vacuum pump has become the industry benchmark with its consistent solid durability and operational reliability. All over the world, this kind of vacuum pump is widely used in various harsh industrial fields.
The noise control technology of rotary vane vacuum pump adopts the world’s advanced low noise design and precision processing, seamless assembly, so as to achieve the well-known low noise in the industry.
Double stage rotary vane vacuum pump with its world leading core technology of continuous improvement, whether intermittent use or continuous non-stop operation.
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