Screw Type 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.

Dry screw vacuum pump is a technological product with very high technical content. It is mainly used in high-purity vacuum processes. It has extremely high vacuum degree and can adapt to harsh working conditions. It has the ability to extract condensable and particulate gases, and is especially suitable for clean environments. , and easy to undergo anti-corrosion treatment, especially suitable for electronics, chemical industry, biomedicine, metal processing, food processing and other fields.

Dry 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. The two screws are finely dynamically balanced and supported by bearings. They are installed on the pump. In the shell, 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 lubricating oil is required in the working chamber. Therefore, the dry screw pump can pump out a large amount of water vapor. And in gas situations with a small amount of dust, the ultimate vacuum is higher, the power consumption is lower, and it has the advantages of energy saving and maintenance-free. It is an updated product of the traditional vacuum pump and has great market prospects in the future.

The screw rotor, the core part of the screw vacuum pump, is designed and solved using a three-dimensional surface mathematical model. The entity of the model is processed on a five-coordinate linkage CNC equipment. It has high precision, reliable quality and stable performance, ensuring long-term trouble-free operation of the product. .

The independent innovation, product quality and price of this product have strong market competitiveness. It can replace imported products on a large scale and has a large market demand. It will be used in chemical industry, metallurgy, electronics, petroleum, aerospace, tools, papermaking, and packaging. , food, medicine, medical equipment, as well as information engineering, bioengineering, microelectronics and other more than 100 fields to comprehensively replace the current low-tech vacuum equipment.

1. There is no medium in the working chamber, so a clean vacuum can be obtained

2. The surface of the working chamber and screw rotor has anti-corrosion coating, which can adapt to harsh working conditions.

3. The gas is not compressed in the pump and is suitable for extracting condensable gases.

4. A single pump can pump up to 1Pa from the atmosphere, and the vacuum system can be greatly simplified.

5. The water temperature has little impact on the vacuum, saving more than 90% of water, or even no water consumption.

6. No oil consumption, no dripping

7. There is no friction between rotating parts, it can operate at high speed, and the whole machine is small in size.

8. Simple structure and easy maintenance.

9. The pumped gas is directly discharged from the pump body, without polluting the water, without environmental pressure, and the gas recovery is more convenient.

10. Can be combined with Roots pump and molecular pump to form an oil-free unit

Similar to the screw compressor, the working process of the screw dry vacuum pump can be divided into three processes: suction, compression and exhaust. As the rotor rotates, each pair of intermeshing teeth completes the same working cycle one after another. One pair of teeth is now illustrated.

Inspiratory process

The male rotor rotates counterclockwise, and the female screw rotates clockwise. The upper rotor end face is the suction section, and the lower end face is the exhaust end face.

Compression process

The rotating end face is the exhaust end face. Here, the male rotor rotates in the clockwise direction and the female rotor rotates in the counterclockwise direction. The upper rotor end face is the suction section, and the lower end face is the exhaust end face.

Exhaust process

In the exhaust process of the screw pump, the exhaust process begins after the volume between the teeth is connected to the exhaust orifice. As the volume between the teeth continues to shrink, the gas with exhaust pressure is gradually exhausted through the exhaust orifice.