Rotary Screw Vacuum Pump

Oxidation stability: It is not easy to deteriorate even if it is in direct contact with air, resin, chemical raw materials, etc. under high temperature conditions for a long time, reducing the formation of harmful paint films and grease, and providing a longer oil change cycle.

Anti-rust and anti-corrosion: It can form a very effective anti-corrosion film on the metal surface, thus comprehensively preventing system corrosion caused by inhalation of corrosive gases and moisture.

It can quickly separate the water entrained in the oil to achieve the required vacuum degree.

It has a lower vapor pressure to prevent oil from flowing back and spreading from the inner cavity of the pump to the vacuum system, causing oil backflow. This ensures sufficient ultimate vacuum.

Filter element: used to filter gas and oil in the vacuum pump to keep the vacuum pump clean and running normally.

The filter element separates solid particles in liquid or gas, or fully contacts different material components to speed up the reaction time, which can protect the normal operation of the equipment or the cleanliness of the air. When the fluid enters the filter element equipped with a certain specification filter, its impurities are blocked , and the clean flow flows out through the filter element. The liquid filter element allows liquids (including oil, water, etc.) to be cleaned to the state required for production and life, that is, the liquid reaches a certain degree of cleanliness.

Water cooler: used to cool the vacuum pump to prevent overheating and damage.

Water cooler is a type of condenser commonly used in vacuum tower top vacuum systems. Since the temperature of circulating water for cooling is usually 30~32°C, conventional water coolers (arbow baffles, floating head type) have minimum temperature difference limitations for cross-heat transfer. When the temperature after cooling reaches below 40°C, the temperature of the circulating water If the riser is too small, the consumption of circulating water will be too large, so it has been rarely used in recent years.

Vacuum pump valve: used to control the flow of gas and liquid and maintain the pressure of the vacuum pump.

Vacuum valve refers to a vacuum system component used in a vacuum system to change the direction of air flow, adjust the amount of air flow, and cut off or connect pipelines. Vacuum valve closing parts are sealed with rubber sealing rings or metal sealing rings.

Vacuum pump connector: used to connect the vacuum pump and other equipment or pipes.

Vacuum gauge: used to measure the pressure inside the vacuum pump to ensure normal operation of the vacuum pump.

Vacuum Gauge, also known as vacuum gauge, is an instrument for measuring vacuum or air pressure. Generally, the changes in certain physical effects of gases under different pressures are used to measure air pressure. It is widely used in scientific research and industrial production.

The screw vacuum pump is an air extraction device that uses a pair of screws to perform synchronous high-speed reverse rotation in the pump casing to produce air suction and exhaust. It is an updated product of the oil-sealed vacuum pump, which can extract a large amount of water vapor and In gas situations with a small amount of dust, it is widely used in domestic pharmaceutical, chemical, semiconductor and other enterprise fields that have high requirements for clean vacuum.

The two screws are finely dynamically balanced and corrected, supported by bearings, and installed in the pump casing. There is a certain gap between the screws. Therefore, when the pump is working, there is no friction between each other, smooth operation, low noise, and no lubrication in the working chamber. Oil, therefore, the dry screw pump can pump out gases containing a large amount of water vapor and a small amount of dust. It has a higher ultimate vacuum, lower power consumption, and has the advantages of energy saving and maintenance-free. It is an updated product of the oil-sealed vacuum pump.

The development of various vacuum pumps is increasingly affected by vacuum applications. General vacuum systems cannot meet the requirements of cleanliness, oil-free and corrosion resistance. Therefore, the market demand for dry vacuum pumps has been great in recent years, and vacuum products have been updated. In this situation, a large number of oil-filled vacuum systems have been replaced by oil-free and clean vacuum systems. Almost every large foreign vacuum company produces various types of dry vacuum pumps. Screw vacuum pumps are non-contact dry pumps. They are an ideal pump type that appeared in the early 1990s. Due to their pumping speed range It has the advantages of wide, simple and compact structure, no friction in the air extraction chamber components, long life, low energy consumption, and no oil pollution, and is widely used.

Due to its superior performance, dry screw vacuum pumps have become the preferred vacuum obtaining equipment in industries such as microelectronics, semiconductors, pharmaceuticals, and precision processing in Europe, the United States, and Japan. Japan has long developed a multi-head rotor for vacuum pumps based on screw compressors. line and put it into the market. Several vacuum equipment companies in Germany have also gradually developed equal-pitch and variable-pitch rotor profiles, and have done a lot of research on rotor and body cooling. Chinese companies also entered the production of screw vacuum pumps into batch production in 2008, and they have been well used in chemical and pharmaceutical industries.