we located in the famous pump city of zibo China,our city have 40 years of experience of produce pumps.full of types & quality ensured, Perfect industrial chain ,Fast production cycle,
We can customize and design various raw material (stainless steel/Aluminum/bronze)vacuum pumps and pumps according to the requirements of users.

We are a professional manufacturer of vacuum equipment, strong technical force, sophisticated process equipment, perfect detection means, product performance to international standards. Our main products are: 2BEA, 2BEC, 2BV, SK, 2SK, 2sk-p1, SZ, SZB series water ring vacuum pump and compressor, W, WY series reciprocating vacuum pump, 2x series rotary vane vacuum pump, 2bw series water ring vacuum pump / compressor closed cycle system, ZJ series Roots vacuum pump, JZ, j2b series Roots water (liquid) ring vacuum unit and other vacuum equipment. Products are widely used in machinery, petroleum, chemical industry, papermaking, electronics, mining, metallurgy, medicine, sugar, printing and dyeing, plastics, pesticides, brick and tile machinery, low-temperature equipment, food machinery and other industries and other fields.
technical data:

Roots vacuum pump is a kind of vacuum pump without internal compression, which is driven by a pair of involute rotors in the pump cavity to move the gas and realize the suction. Generally, the pumping rate is large and the configuration motor is small, so it is necessary to pre pump the front stage pump. After the front stage pump reaches the specified vacuum degree, the roots vacuum pump is started to improve the pumping speed and vacuum degree. Its structure and working principle are shown in the figure.

1. There is no friction, no lubrication and no oil in the running parts of the pump.

2. The involute cycloid profile of rotor has high machining precision and accurate dynamic balance.

3. The vertical flow of gas in the pump chamber is beneficial to the removal of dust and condensate in the extracted gas.

4. Professional manufacturing of high-precision gear, imported bearings, to ensure stable and reliable operation.

5. The oil tank and middle wall water-cooled jacket design is adopted to cool the pump oil, bearing, gear and sealing components in an all-round way, which greatly improves the service life.

6. It can be combined with liquid ring vacuum pump, reciprocating vacuum pump, rotary vane vacuum pump and dry vacuum pump to form roots vacuum unit.

7. The flow passage parts can be made of stainless steel, nickel phosphorus alloy, tungsten carbide, Hastelloy and PTFE lining. The anticorrosion scheme is selected according to the strong corrosive environment in vacuum.


















Performance characteristics

1. Pump coaxial direct connection design saves space and is easy to install.

2. The mechanical seal is used as the standard configuration, which eliminates the leakage and is easy to maintain.

3. The operation is stable and the noise can be as low as 62 dB.

4. Uniform corrosion resistant design, bronze impeller improves pump corrosion resistance, stainless steel material is more suitable for more demanding applications.


impeller material: cast iron, Alumnium,bronze,stainless steel etc,
shell material: casting grey iro.
 flow: 280m³/h; power: 185kw; temperature of air: 0--80⁰ C;
sediment content of water: max 350g/m^3,  PH: 2---10;











The pump body contains proper amount of water as working fluid. When the impeller rotates clockwise in the diagram, the water is thrown around by the impeller. Due to the centrifugal force, the water forms a closed ring which is approximately equal to the thickness of the pump cavity. The inner surface of the lower part of the water ring is exactly tangent to the hub of the impeller, and the upper inner surface of the water ring is just at the tip of the blade (in fact, the blade has a certain insertion depth in the water ring). At this time, a crescent space is formed between the hub and the water ring of the impeller, which is divided into several small cavities equal to the number of blades. If the lower zero of the impeller is taken as the starting point, the area of the small cavity increases from small to large when the impeller rotates 180 degrees, and is connected with the suction port on the end face. At this time, the gas is sucked in, and the small cavity is isolated from the suction port when the suction is finished. When the mouth is connected, the gas is discharged out of the pump.

motor for pumps material and structure:







our company located in ZIBO where famous hometown of  water pump ,with a long history of producing water pump and many years of experience.we'll supply the best quality with cheaper price and accurately pump type for yo