Screw vacuum pumps are high-tech products developed by our company. It is mainly composed of a screw rotor, a housing, a gear, a cooling cycle and a seal. The rotating shaft is connected to the active rotor, and the rotor rotates through high-precision synchronous gears. Synchronous gears and bearings are lubricated with oil, and the inside of the bearing and housing are sealed by seals to achieve an oil-free effect. A pair of screws rotating in opposite directions supported by bearings of the two end covers of the pump will be sucked in, and the purpose of pumping is achieved through the three processes of gas suction, compression and exhaust. Brand: Zhong Ni types: ZN series type: dry screw vacuum pump material: ductile iron principle: vacuum pump vacuum: high vacuum drive mode: electric performance: corrosion resistant conveying medium: non-condensable gas and condensable mixed gas power: 4kw extreme pressure: see details pump shaft position: horizontal application: food and chemical industry weight: 280kg voltage: 220/380V impeller number Purpose: none Dry screw vacuum pump performance characteristics: 01 There is no lubricating oil in the working cavity, so a clean vacuum can be obtained. 02 No oil and gas pollution in the working cavity is soft to be extracted, the process gas recycling rate is high, the exhaust gas treatment is convenient, and the discharge of oil gas and fumes is avoided, and the environmental pollution is small. 03 There is no lubricating oil in the working cavity, which avoids the operation failure caused by emulsification and deterioration of the lubricating oil, improves the stability of the system, and reduces the loss of pump lubricating oil. 04 The pump is suitable for Fan Guoguang. The pump working cavity and screw rotor have anticorrosive coating on the bottom surface, which can adapt to harsh working conditions: 05 pump cavity is a gap sealing structure, insensitive to a small amount of small particles of dust, once the pump cavity is true, no middle peripheral plate structure, dust is not easy to deposit in the pump cavity; flammable and explosive gases can be removed dry when using explosion-proof configuration. 06 When the pump is working, the temperature in the pump cavity can reach more than 100℃, so that the condensable gas is not easy to condense. The inside of the Danhesheng is a direct structure, and the exhaust port is at the bottom of the pump cavity, and the debris in the pump is easy to discharge, so it is appropriate for him to take the condensable gas. 07 The pump can be used alone, or combined with roots pumps, molecular pumps, etc. to form an oil-free vacuum pump unit, and used as a front-stage pump of the unit. The single pump inlet pressure can work normally from 1Pa to atmospheric pressure, and the pumping efficiency is high, and the vacuum pumping system can be greatly simplified. 08 The screw pump needs to maintain a high temperature when working, and the efficiency of natural heat dissipation on the outer surface of the pump is relatively improved when the pump is working, and the body temperature difference between the cooling water and the pump is large, and the cooling effect is good, so the pump uses less cooling water, and the temperature requirement for the cooling water is low. 09 The unique multi-stage rotor is directly connected in series in a spiral manner, eliminating the septum structure, no intermediate suction and exhaust process, simple and continuous working process, high efficiency, and high pump operation stability. 10 The parts in the pump cavity are sealed with gaps, no contact friction between the parts, small parts loss and long service life; at the same time, the pump speed is high, and the whole machine is small in size. 11 The screw pump has simple structure, few types and number of parts, and convenient maintenance. 12 Fast start, small starting current, small impact on the power grid when starting, and the pump starts at normal pumping speed after starting.