What is a dry screw vacuum pump?

What is a dry screw vacuum pump?

Dry screw vacuum pumps operate with two screw rotors rotating in opposite directions. This traps the medium to be pumped between the cylinder and the screw chambers and transports it to the gas discharge. The advanced screw design results in lower electric energy consumption compared to standard screw designs.

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Guangdong Wordfik Vacuum Technology Co., Ltd. was established in 2019 in Chashan Town, Dongguan City, Guangdong Province. The company has a registered capital of 5 million yuan. Since its establishment, it has aimed to build a vacuum pump maintenance super factory. It specializes in providing customers with various types of vacuum pump repair, maintenance, testing and debugging, vacuum system design and installation, and vacuum pump rental services. The maintenance plant covers an area of about 3,500 square meters. Dust workshop decoration design, dismantling workshop, assembly workshop, testing workshop, spare parts warehouse, equipment room, technical department, cleaning room, etc.

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What are the advantages of dry screw vacuum pump

Advantages of dry screw vacuum pump;

1. Both the working chamber and the screw rotor are coated with anti-corrosion coating, which can adapt to harsh working conditions

2. The gas in the pump is not compressed, so it is suitable for extracting condensable gas

3. No fuel consumption, no dripping water

4. Simple structure and convenient maintenance.

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

What are the advantages of dry screw vacuum pump

What are the disadvantages of dry screw vacuum pump

Disadvantages of dry screw vacuum pumps

1. Due to the difficulty of processing screw pumps, the screw pumps used in my country mainly rely on imports and are expensive.

2. Not suitable for extracting explosive gas.

3. It is not suitable for extracting gas with high oxygen content.

What are the disadvantages of dry screw vacuum pump

Principle of dry screw vacuum pump

working principle

The dry screw vacuum pump is a suction and exhaust equipment that uses a pair of screws to rotate in the pump shell at a high speed and in a reverse direction. The working process of the dry screw vacuum pump can be divided into three processes: suction, compression and exhaust. As the rotor rotates, each pair of intermeshing teeth completes the same work cycle in succession.

Principle of dry screw vacuum pump
Frequently Asked Question

Do you have any question?

Screw pumps operate using two counter-rotating screw rotors which are engineered so that they rotate “towards each other”. This traps the gas in the space between the “screws” of their rotors. As the screws rotate, this trapped volume decreases which not only compresses the gas but moves it towards the exhaust.

A Worm Pump (more often referred to as 'screw pump') is a positive displacement pump that use one or several screws to move fluids or solids along the screw(s) axis. In its simplest form (the Archimedes' screw pump), a single screw rotates in a cylindrical cavity, thereby moving the material along the screw's spindle.

When pump is ready to be started, first briefly switch on and off the motor and check the direction of rotation is as per the marking on the pump. Start the pump and keep checking suction and discharge pressure gauges for rated pressure. Check prime mover motor ampere and compare with rated current.

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