Roots Vacuum Pump Factory

EVP specializes in dry vacuum pump, Roots vacuum pump, water ring vacuum pump research, design, production, sales as one of the Roots vacuum pump factory. At present, the company’s leading products are Roots vacuum pump, claw dry vacuum pump, water ring vacuum pump and vacuum unit. ZJ Roots Vacuum Pump/ZJP Roots Vacuum Pump Series has the leading technical advantages in the same industry, and the product performance can be comparable to that of imported products.

Roots Vacuum Pump Principle :

Roots vacuum pump is a variable-volume vacuum pump with two blade-shaped rotors rotating synchronously in opposite directions. There are small voids between the rotors, the rotors and the inner wall of the pump housing, but they do not touch each other. Roots vacuum pump can not be pumped alone, the front stage needs to be equipped with oil seals, water rings, etc. can be directly discharged into the atmosphere. The suction port of Roots vacuum pump is connected with the main suction pump of the vacuum vessel or vacuum system. The vacuum pump rotor and rotor, rotor and pump shell do not touch each other, the gap is generally 0.1-0.8 mm; no need for oil smoothing. Because of the continuous rotation of the rotor of the vacuum pump, the exhausted gas is sucked from the intake to the space between the rotor and the pump housing, and then discharged through the exhaust port.

Roots vacuum pump features:

1. The noise of Roots vacuum pump is low, and the spiral shape of the inlet and outlet of the fan is chosen, so that the process of air intake and exhaust can be cut in sequence according to the direction of the spiral line, thus avoiding the impulsive noise and oscillation bursting out instantaneously in the exhaust of the old Roots blower.

2. Fast start-up, less power consumption, low maintenance cost, high pumping speed and high power, insensitive to a small amount of steam and dust contained in the exhausted gas.

3. Functional stability. Roots blower rotor, housing, wallboard, shaft and other key parts, are selected advanced control processing equipment, so that the interchangeability of parts and components progress.

4. Small oscillation. Although the rotor has been balanced by fine processing, high-precision dynamic balancing equipment is still used for balancing.

5. High adiabatic power and volumetric power, consequently energy saving. The Roots vacuum pump rotor adopts advanced composite curve, the meshing is more reasonable, and the volume power is increased.

6. Choosing synchronous gears with high precision and hardness can not only prolong the life of Roots vacuum pump, but also reduce noise.

Roots vacuum pump Technical parameters:

Model ZJP- 70 ZJP- 150 ZJP- 300 ZJP- 600 ZJP- 1200 ZJP- 2500
Pumping speed(L/s) 70 150 300 600 1200 2500
Ultimate pressure
5×10-2 (1stage piston pump as backing pump)
1×10-1 (2 stage piston pump as backing pump)
Diff. pressure at overflow valve (Pa) 4×103 2. 7×103
Motor rotary speed(RPM) 3000
Suitable motor power(kW) 1.1 2.2 4 7.5 11 22
Flange size inlet(mm) 80 100 150 200 250 320
outlet(mm) 80 100 150 200 200 320
Cooling water consumption(L/h) 120 150 200
Allowable temperature(℃) 100
Vacuum pump oil 100#
Weight(without motor)(kg) 110 205 265 780 880 1350

Roots vacuum pump

ZJP Roots Vacuum Pump

EVP professional roots vacuum pump factory produce and sell various types of vacuum pumps, roots vacuum pumps, air-cooled Roots vacuum pumps, screw vacuum pumps and vacuum application equipment. The company takes advanced technology as the guide and excellent equipment as the backing to produce high quality products. The after-sales service is timely and thoughtful, and won the praise of users.


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