VPD variable pitch screw vacuum pump, also known as dry screw vacuum pump, is a working chamber composed of a pair of parallel spiral rotors and the pump body. There is no friction between the two screw rotors processed by the five axis linkage composite machining center and between them and the pump body, and a certain gap is maintained. Multiple sealing cavities are formed between the two rotors and the pump body. When the rotor rotates synchronously and reversely at high speed in the pump shell through the gear, It is an air extraction device that continuously pushes the gas in each sealing cavity from the inlet end to the exhaust end, resulting in suction and exhaust.

The working chamber of the screw pump is gap sealed and free of lubricating oil. It is an environment-friendly vacuum equipment. Therefore, the dry screw pump can pump out the gas containing a large amount of steam and a small amount of dust. It has the advantages of high limit vacuum, low power consumption, energy saving, consumption reduction and maintenance free. It has incomparable advantages, especially in the occasions requiring oil-free cleaning in the semiconductor and electronics industries and the solvent recovery process in chemical and pharmaceutical industries.

Screw vacuum pump is a substitute for traditional water ring vacuum pump, water jet vacuum pump, reciprocating vacuum pump, slide valve vacuum pump, rotary vane vacuum pump and other vacuum pumps. The upgrading of this product can effectively eliminate the sewage discharge of vacuum process in pharmaceutical and chemical industry, facilitate the recovery of tail gas solvent, effectively reduce the oil vapor pollution of slide valve vacuum pump and rotary vane vacuum pump, and reduce the equipment maintenance cost.

Dry screw vacuum pump is an air extraction device that uses a pair of screws to perform suction and exhaust effects caused by synchronous high-speed reverse rotation in the pump shell. The two screws are calibrated by fine dynamic balance, supported by bearings and installed in the pump shell. There is a certain gap between the screws. Therefore, when the pump is working, there is no friction between them, the operation is stable, the noise is low, and the working chamber does not need lubricating oil. Therefore, Dry screw pump can pump out the gas containing a large amount of steam and a small amount of powder. It has higher limit vacuum and lower power consumption. It has the advantages of energy saving, environmental protection, maintenance free and so on. It is an updated product of oil seal / water ring / jet vacuum pump

Chongqing Jiajiayi Vacuum Equipment Co., Ltd. was established on December 23, 2014. Its registered office is located at No. 21, Yuanyuan Road, Wuyang Street, Xiushan County, Chongqing City (1-349, Building E, Turnover Room in the County Industrial Park). The legal representative is Zhang Jianluan. The business scope includes general items: design, production, sales and maintenance of vacuum equipment, vacuum systems, air compressors and spare parts; wholesale of lubricants (excluding hazardous chemicals), rubber products, electrical control instruments and measuring instruments; commissions Agency; goods import and export business. (Projects subject to approval according to law can only carry out business activities after approval by relevant departments) (Except for projects subject to approval according to law, business activities can be carried out independently with business licenses)

Zhang Jianluan

jjyvacuum@126.com

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