JZJ2B series Roots water ring vacuum unit

JZJ2B series.pdf

Summary:

JZJ2B Roots series water ring unit is consists of ZJ type roots pump as the main pump,2BV/2BE1 series of water ring pump or Roots--water ring unit as a fore pump pumping unit. It can be used to pumping gas in addition to, can also aspirate containing water, compared to organic solvent or a small amount of dust gas. And general mechanical vacuum pump, not afraid of oil pollution, not afraid of water, gas and dust, and compared with the general water ring vacuum pump, with vacuum high and pump speed characteristics under high vacuum condition.

Due to the adoption of the high efficiency and energy saving of 2BV series water ring pump before the class, so JZJ2B series vacuum unit than jzj2s series with high efficiency, compact structure, no leakage (2BV pump mechanical seal design, different to 2SK series packing seal) resistance to corrosion (2BV adopts stainless steel or aluminum bronze impeller）protection grade higher merit.

Roots vacuum pump using the company's own R & D ZJ Roots series vacuum pump，our company will pump cavity and the bearing cavity sealing was improved after the ZJ Roots series vacuum pump in the pumping process of a large number of water vapor and various solvents oil pump is not easy to be emulsified.

Roots water ring vacuum unit of pump working fluid with water, can also be used in organic solvents (methanol, alcohol, xylene, acetone and other organic solvent ) or other liquid, using pre - pump as a closed circulation system，can greatly reduce the pollution to the environment, and greatly improve the recovery of the organic solvent. The limit vacuum degree by the working fluid saturated vapor pressure.

Roots unit selection considerations:

.Learn to be pumping gas composition, gas containing excluding condensable vapor, dust particles, there is no corrosion. The choice of vacuum pump and need to know the gas composition, the selection of the corresponding pump was pumping gas. If the gas containing steam, particles, and corrosive gases should be the consideration in the pump inlet pipe to install auxiliary equipment, such as condensers, dust collector.

. Roots vacuum unit of the working pressure should meet the requirements of vacuum equipment vacuum and pressure. Such as a vacuum drying process requirements 10mmhg (absolute pressure) of the working pressure, the selection of vacuum pump limit pressure at least 2mmhg, preferably below. Usually choose the limit pressure of the pump is higher than that of vacuum pressure equipment of one half to one order of magnitude.

.Correctly choose the normal operating range of the working point of the roots vacuum units. Roots vacuum unit for maximum suction pressure limit pressure *. Example: the normal operating range of JZJ2B150-2.1Roots water ring vacuum unit for: 6000Pa~125Pa. The scope of work as the main pump is turned on normal working pressure range, the unit in the scope of work within the best efficiency.

.Under the pressure of the vacuum unit, the vacuum unit should be able to discharge all the gas generated in the process of vacuum equipment.

. Choose the appropriate unit configuration. According to the practical conditions. For example: JZJ2B300-4.1 unit and JZJ2B300-2.1 unit maximum pumping speed and ultimate pressure is the same, the difference is their work scope and power consumption, the normal working range of JZJ2B300-4.1 unit is 2000Pa~125Pa, and the normal working range of JZJ2B300-2.1 unit 5000Pa~125Pa. obviously JZJ2B300-2.1 units work in a wider range, but its power consumption is greater. If we can confirm the pumping system working pressure is less than 2000Pa, should be preferred JZJ2B300-4.1 group to save energy. But if there is a strong demand for fore pumping unit and unit takes a long time to work at high pressure the system is used JZJ2B300-2.1 the fore pump unit has more appropriate.

Model representation method

For example：J Z J 2 B 1 5 0 － 2 . 1

J-denotes the first letter of the unit

ZJ-denotes the main pump using ZJ Roots series vacuum pump

2B-denotes the fore pump using the 2BV/2BE series water(or liquid) ring vacuum pump

("2S" denotes the fore pump using the 2SK series water (or liquid) ring vacuum pump 

150-denotes the suction speed of the main pump (Roots pump) L/s

2.1-denotes code of the suction speed ratio

(i.e. the suction speed ratio between the main pump and the secondary pump is 2; the suction speed ratio between the secondary pump and the fore pump is 1.) 

JZJ2B Series Roots Water Ring Vacuum Unit Technical Specifications:

Explanation:

2.As the technology parameter of the each pump, please refer to the single pump parameter.　　

1. The above table refers to the standard series. Because under the various practical conditions, the suction gases and its pressure will have great difference. The practical pumping process, the gas releasing process, the coagulation situation and the time variety should be considered when choose the package unit. Otherwise, refer to the existing equipments.　

3. Please inform us when the motor of the pump, the electric connecting point vacuum meter and the electric control cabinet need explosive-proof. Further, the2BV5 series vacuum pumps are also replaced by the 2BV6 series pumps.　　

4. As the maximum suction pressure, please refer to the highest pressure that enables the main pump work. If the main pump works under the max suction pressure, it may be overloaded.