Vacuum pump is a sealed container and vacuum equipment extracted by mechanical or physical chemical method, which is essentially a vacuum obtaining equipment. Different vacuum pump classifications have different characteristics to adapt to different operating environments and working conditions. Let's talk about the classification of vacuum pumps
The first is that it can be divided into mechanical vacuum pump and jet vacuum pump according to the structure. All mechanical movements (rotating or sliding) used in various vacuum equipment to change the volume of the suction container of the pump and the vacuum pump are often referred to as mechanical vacuum pumps. The mechanical volume vacuum pump changes the working volume of the pump cavity cyclically through mechanical movement to achieve the effect of the mechanical volume vacuum pump. These pumps include reciprocating vacuum pumps, rotary mechanical pumps (including rotary pumps, screw pumps, roots pumps, liquid ring pumps, etc.). This type of pump differs from the usual ones for mechanical pumps.
Secondly, it can be divided into gas conveying vacuum pump and gas trapping vacuum pump according to the working principle. The gas conveying pump is a kind of gas suction and discharge which can achieve the goal of suction vacuum pump. There are two types of vacuum pumps: variable volume vacuum pumps and momentum transfer pumps. The gas trapping pump is a kind of vacuum pump, which makes the gas molecules adsorb or condense on the inner surface of the pump, thereby reducing the number of gas molecules in the container and achieving the purpose of suction. Piston vacuum pump, rotary vane vacuum pump, vacuum pump, screw vacuum pump, vacuum pump, diffusion pump injection pump and several other typical types.
Finally, according to the degree of vacuum, the pressure range of vacuum technology can reach 100 ~ 10 ~ 16 kPa. In addition to such a wide range of pressures, a vacuum pump can be used to obtain rough and low vacuum. High vacuum must be completed by two or more vacuum pumps in the field. From high / ultra vacuum to rough / low vacuum, according to the degree of vacuum, vacuum pumps can be roughly divided into high / ultra vacuum cryopumps, molecular pumps, sputtering ion pumps, titanium sublimation pumps, diffusion pumps, medium vacuum one dry pumps, and two-stage rotation Vane pump, roots pump, booster pump, water vapor jet pump, rough / low vacuum single-stage rotary vane pump, slide valve pump, liquid ring pump, reciprocating vacuum pump.
The jet vacuum pump consists of a nozzle, a suction chamber and a diffuser. It has no moving parts and uses fluids to transfer energy and mass. It uses a working fluid with a certain pressure to eject the nozzle at high speed, and forms a vacuum at the nozzle outlet through energy conversion, thereby extracting the extraction medium. After the two media are mixed, the energy is exchanged in the diffusion tube and then released slightly above atmospheric pressure. Pumps belonging to this type are water vapor jet pumps, air jet pumps, water jet pumps and diffusion pumps.
Guangdong Guangye Electromechanical Equipment Engineering Technology Co., Ltd. is an enterprise that integrates agent sales and after-sales maintenance to provide customers with air compressors, vacuum pumps, nitrogen machines and post-processing equipment. Our company is an agent of Bola State of Atlas Group. The company keeps its credit, abides by contracts, guarantees product quality, and wins the trust of customers with its multi-variety operating characteristics and the principle of small profits but quick turnover.