1. It can operate from atmospheric pressure to the ultimate pressure

2. Under low vacuum pressure, good pumping speed can still be maintained

3. Low noise and low vibration

4.  Built in outlet filter core, achieving 99.9% oil and gas filtration effect

5. Super strong function of eliminating water vapor

6. Air cooling, economical and convenient(water cooling is optional)

7. The air inlet is equipped with a check valve to prevent the vacuum oil from flowing back when the pump stops

8.  Compact structure, small size, and space saving

9.  Very easy to maintain

As the SOGEVAC series vacuum pump can operate from atmospheric pressure of 1000 mbar to ultimate pressure of 0.08 mbar. So its application range is very wide, such as food packaging, metal industry, petrochemical industry, vacuum heat treatment, vacuum suction, pharmaceutical technology, electronic technology, semiconductor industry, vacuum electroplating, aerospace industry, etc.

During the use of thermal oil pumps, the vacuum pump oil directly enters the pump body chamber,in the operation of the vacuum pump, the gas pressure gradually decreases, the pump temperature gradually increases. The molecular with high saturated vapor pressure in oil can evaporate into the vacuum space, which affects the ultimate pump pressure and can also diffuse back into the vacuum system, contaminate the vacuum system, and directly affect the ultimate vacuum. The working principle of vacuum gear pump belongs to positive displacement pump. During the operation of heat transfer oil pump, relying on the meshing of the main and driven gears to cause a change in the working volume to transport the melt.

The working volume is composed of the pump body, the gear teeth, and bearing sleeves with side plate function. When the gear rotates, the melt enters the grooves of the two gears in the suction chamber. The melt is brought into the discharge chamber from both sides with the rotation. The gears mesh again, the melt in the grooves is squeezed out of the discharge chamber and pressed into the outlet pipeline. The common lubricating grease can’t be used on the bearings to avoid contaminating the melt, and melt self-lubricating is usually used. The working chamber of the heat transfer oil pump continuously increases or decreases, and when the volume becomes the smallest, it is connected to the inlet pipe of the vacuum pump, so that gas enters the gradually increasing working chamber space; When the volume of the chamber expands, it disconnects with the inlet pipe, causing the volume valve to open. The volume inside the pump chamber continuously expands and compresses, completing the suction and exhaust processes, gradually allowing the gas to be discharged to the required vacuum degree. When the vacuum pump is running, with the rotation of the rotor, the sliding pieces in the two longitudinal grooves on the rotor or the slide valve rings on the eccentric wheel slide tightly against the inner wall of the stator. The inner walls of the rotor, sliding pieces, and stator heat transfer oil pump rely on the oil lubrication to avoid scratches on the friction pairs, the oil isolates the atmosphere, and take away the heat generated by friction. Therefore, the vacuum pump oil plays a role in lubrication, sealing, and cooling.

（1）The window where oil is filled must be clean, and strictly prohibited to be exposed to sunlight or stored outdoors. It should be stored in a dark, dry, and ventilated environment to prevent the mixing of water and dust.

（2） When taking or filling oil, the light rain around the barrel cover must be completely removed to prevent debris from mixing into the oil and causing pump wear.

（3）  Vacuum pump oils of different grades and varieties cannot be mixed, and new and used oils cannot be mixed.

（4） Strictly avoid mixing vacuum oil with other lubricating oils, and do not mix light oil products, otherwise it will affect the vacuum pumping.

（5）  Solvents, water vapor, and corrosive gases pumping should be avoided. The oil must be checked and replaced frequently when in use.

（6）  When changing the oil, the used oil in the pump should be drained. After filling in new oil, slowly rotate the pump shaft, clean the pump chamber to drain the remaining oil, repeat the cleaning several times, and then replace with new oil.

（7）  During pump overhaul, all components of the pump must be cleaned with solvents or cleaning agents and dried.

（8） Refueling equipment must be specialized and should not be a container or pump that has been used to hold other oils or solvents.

（9）  When mineral oil is exchanged with ester oil or other synthetic oils, the pump should be disassembled and thoroughly cleaned. All components must be immersed in the oil to prevent contamination.

（10） If chemical gases and solvents are inhaled and affect the vacuum pumping, it must be cleaned and replaced.

（11） Oil change deadline: a. When the vacuum pumping drops and cannot meet the needs; b. When the color of the pump oil becomes darker and brown, the oil should be changed.