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JZJ2B300 + 2BA6131 water ring roots vacuum pump unit
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  • JZJ2B300+2BA6131型水环罗茨真空泵机组 Product name: JZJ2B300 + 2BA6131 Water Ring Roots Vacuum Pump Unit
  • 400-6064-114 Order hotline: 400-6064-114

Product introduction Product introduction
National free consultation hotline: 400-6064-114

JZJ2B water ring roots vacuum pump unit is an air extraction unit composed of ZJ roots pump as the main pump, 2BV (2SK) liquid ring vacuum pump or roots-liquid ring vacuum unit as the foreline pump. It can not only be used to extract general gases, but also to extract gases containing moisture and a small amount of dust. Compared with general mechanical vacuum pumps, it has the advantages of not being afraid of oil pollution, water vapor and dust. Compared with general liquid ring vacuum pumps, it has the advantages of high ultimate vacuum and high pumping speed under high vacuum conditions. It is an ideal vacuum extraction equipment for drying, dehydration and vacuum degassing in the textile, food, chemical, pharmaceutical and other industries.


1. The JZJ2B water ring roots vacuum pump unit uses a high efficiency and energy saving 2BV liquid ring vacuum pump as the foreline pump, so JZJ2B water ring roots vacuum pump unit has higher efficiency, compact structure and no leakage than JZJ2S series water ring roots vacuum pump unit (2BV series is a standard mechanical seal design, different from 2SK series packing seals), corrosion resistance (2BV series The use of aluminum bronze impeller), high protection level.
2. The working fluid of the foreline pump of the JZJ2B water ring roots vacuum pump unit mostly uses water, or organic solvents (such as methanol, ethanol, xylene, ** and other organic solvents) or other liquids can be used, and the foreline pump is used as a closed circuit. The use of the system greatly reduces environmental pollution and greatly improves the recovery of organic solvents. Its ultimate vacuum is determined by the saturated vapor pressure of the working fluid.



First, understand the components of the gas being pumped, whether the gas contains condensable vapor, whether there is particulate dust, and whether it is corrosive. When selecting a vacuum pump, you need to know the gas composition and select the appropriate pump for the gas being pumped. If the gas contains vapor, particles, and corrosive gases, you should consider installing auxiliary equipment such as condensers and dust collectors on the pump's inlet pipe.

Second, the working pressure of the roots vacuum unit should meet the requirements of the ultimate vacuum and working pressure of vacuum equipment. For example, a vacuum drying process of a vacuum unit requires a working pressure of 10mmHg (absolute pressure). The ultimate pressure of the vacuum pump selected should be at least 2mmHg, and preferably less than 1mmHg. Generally, the ultimate pressure of the pump is selected to be half to one order of magnitude higher than the working pressure of the vacuum equipment.

Third, the correct choice of the working point of Roots vacuum units . The normal working range of the roots vacuum unit is the maximum suction pressure to the ultimate pressure × 5. Example: The normal working range of the JZJ2B150-2.1 Roots water ring vacuum unit is: 6000Pa ~ 125Pa. This working range is the normal working pressure range after the main pump is turned on. This unit has the best efficiency within this working range.

four, Under the working pressure of JZJ2B water ring roots vacuum pump unit, it should be able to exhaust all the gas generated during the vacuum equipment process.

Fifth, select the appropriate unit configuration according to the actual working conditions. For example: JZJ2B300-4.1 unit and JZJ2B300-2.1 vacuum unit have the same maximum extraction rate and ultimate pressure. The difference is that their working range and power consumption are different. The normal working range of JZJ2B300-4.1 unit is 2000Pa ~ 125Pa. The normal working range of the JZJ2B300-2.1 vacuum pump unit is 5000Pa to 125Pa. It is obvious that the normal working range of the JZJ2B300-2.1 unit is wider, but its power consumption is also greater. If it can be confirmed that the working pressure of the pumped system is less than 2000Pa, the JZJ2B300-4.1 unit should be preferentially selected to save energy. If the unit is required to have a strong pre-pumping capacity for the system and the unit needs to work at a higher pressure for a long time, Wanjing Pumps Industry will choose the JZJ2B300-2.1 unit with a larger foreline pump. JZJ2BA Water Ring Roots Vacuum Pump Unit

Unit Type Pump model Pumping speed
L / s
Maximum suction pressure Pa Ultimate pressure Pa (absolute pressure) Total power
KW
Main pump Foreline pump Water ring unit Oil ring unit
JZJ2B30-1 ZJ30 2BV5110 30 12000 267 80 4.75
JZJ2B70-2 ZJ70 2BV5110 70 6000 5.1
JZJ2B70-1 ZJ70 2BV5111 70 12000 6.6
JZJ2B150-2A ZJ150 2BV5111 150 6000 7.7
JZJ2B150-2B ZJ150 2BV5121 150 8000 9.7
JZJ2B150-1 ZJ150 2BV5131 150 10000 13.2
JZJ2B300-2A ZJ300 2BV5131 300 4000 15
JZJ2B300-2B ZJ300 2BV5161 300 5000 19
JZJ2B30-2.1 ZJ30 ZJ30, 2BV2071 30 8000 25 0.8 5.35
JZJ2B70-2.1 ZJ70 ZJ30, 2BV5110 70 6000 5.85
JZJ2B150-2.1 ZJ150 ZJ70, 2BV5111 150 6000 8.8
JZJ2B150-4.1 ZJ150 ZJ30, 2BV5110 150 3000 6.95
JZJ2B300-2.1 ZJ300 ZJ150, 2BV5131 300 5000 17.2
JZJ2B300-2.2 ZJ300 ZJ150, 2BV5121 300 4000 13.7
JZJ2B300-4.1 ZJ300 ZJ70, 2BV5111 300 2000 10.6
JZJ2B600-4.1 ZJ600 ZJ150, 2BV5131 600 1500 18.7
JZJ2B600-2.2 ZJ600 ZJ300, 2BV5161 600 2000 24.5
JZJ2B1200-4.2 ZJ1200 ZJ300, 2BV5161 1200 1000 30
JZJ2B30-2.1.1 ZJ30 ZJ15, ZJ15, 2BV2061 30 8000 0.5 0.05 3.35
JZJ2B70-2.2.1 ZJ70 ZJ30, ZJ15, 2BV2061 70 4000 4.3
JZJ2B70-2.1.1 ZJ70 ZJ30, ZJ30, 2BV5110 70 6000 7
JZJ2B150-2.2.1 ZJ150 ZJ70, ZJ30, 2BV5110 150 3000 8.4
JZJ2B300-2.2.1 ZJ300 ZJ150, ZJ70, 2BV5111 300 3000 12.8
JZJ2B300-4.2.1 ZJ300 ZJ70, ZJ30, 2BV5110 300 1200 11.3
JZJ2B600-2.2.1 ZJ600 ZJ300, ZJ150, 2BV5131 600 2500 22.7
JZJ2B600-4.2.1 ZJ600 ZJ150, ZJ70, 2BV5111 600 1200 14.3
JZJ2B1200-4.2.1 ZJ1200 ZJB300, ZJ150, 2BV5131 1200 1000 28.2


Note: 1. The above table is a series of industry recommended standards. Due to different working conditions in actual production applications, the pressure of the suction gas will change a lot. Therefore, the selection of Wanjing Pump Industry should be based on the actual extraction process and gas release process. , Suspicious gas condensation, suction pressure change time, etc. Check calculations or refer to the use of existing equipment selection.
2. For the technical specifications of a single pump, see the pump parameter table.
3. The maximum suction pressure refers to the highest pressure that the main pump can start. If the main pump is started at a pressure higher than this pressure, the main pump may be overloaded.
4. If the vacuum pump motor, electrical contact vacuum meter, and electrical control cabinet need to be explosion-proof, please indicate when ordering. The 2BV2 series in the above table is correspondingly changed to 2BV2-Ex series, and the 2BV5 series is changed to 2BV6 series accordingly.



Primary and secondary units (roots pump + water ring pump)

The main pump of this vacuum unit is a V2 type Roots vacuum pump, and a V1 type liquid ring vacuum pump is used as the foreline pump (such as the system diagram 1). In order to ensure the normal operation of each pump, the following procedures should be operated:
1. Check the integrity of the equipment before installation, and familiarize yourself with the operating instructions of each pump.

2. Fix the vacuum unit in place and fix the bottom corner, and connect the pipes as required.
Note: When connecting the air inlet pipeline, a 20 to 40 mesh filter should be installed in the pipeline above the unit to prevent foreign matter such as welding slag from entering the vacuum unit. It can be taken out after the pipeline passes the pumping experiment and the test run is successful. It is best to be able to install a Y strainer. A valve should be installed above the air inlet of the roots pump and connected to the system, so that it can be closed before stopping to isolate the unit from the vacuum system; a ball valve should be installed between the liquid ring pump and the liquid supply pipeline to control the liquid ring pump Internal supply volume.

3. Before starting the vacuum unit , check whether there are any leaks in the pipes of the system. Before starting the liquid ring pump, check the car and check whether it is stuck. Before starting, the Roots pump oil tank and oil cup should be according to the "Roots Vacuum Pump Instruction Manual" The internal oil level is injected to the specified requirements; and the cooling pipe of the roots pump is connected to ensure the cooling effect of the root seal of the roots pump.

4. Assemble the control cabinet and connect the motor and electrical contact vacuum gauge according to the electrical schematic diagram.
5. Before sending power to the electric control cabinet, it should also remotely measure its insulation resistance ≮10MΩ, and the frame is well grounded to each motor; before the unit starts, check whether the rotation direction of each pump is correct and make other preparations before driving. jobs.

6. Adjust the lower limit of the vacuum degree on the electric contact vacuum meter to -0.092MPa, and adjust the upper limit to the maximum; Note: When adjusting the upper and lower limits of the electric contact vacuum meter, the total power must be cut off first to prevent electric shock!

7. Supply power to the electric control cabinet, open the liquid supply valve to fill the liquid ring pump with water, and press the start button to run the liquid ring vacuum pump. The electric contact vacuum gauge controls the roots pump to start automatically and the unit starts to work, driving the entire system. During operation, if the vacuum degree is lower than the limit value due to a certain factor, the roots pump will automatically stop running, and when the vacuum degree returns to the limit value, the roots pump will restart again;

8. Shanghai Wanjing Pump Industry Co., Ltd. advises to shut down the system and the unit to connect the butterfly valve before shutting down, and then press the stop button to stop the vacuum unit.

Second and third stage units (roots pump + roots pump + water ring pump)

The main pump of this vacuum pump unit is a V3 type Roots vacuum pump. The V2 type Roots vacuum pump and the V1 liquid ring vacuum pump are used as the foreline pump (such as the system picture 2). The following procedure should be followed:
1. Check the integrity of the equipment before installation, and familiarize yourself with the operating instructions of each pump.

2 Fix the bottom corner of the vacuum pump unit in place and connect the pipeline as required.
Note: When connecting the air inlet pipeline, a 20 to 40 mesh filter should be installed in the pipeline above the unit to prevent foreign matter such as welding slag from entering the vacuum unit. It can be taken out after the pipeline passes the pumping experiment and the test run is successful. It is best to be able to install a Y strainer. A valve is installed above the air inlet of the roots pump and connected to the system so that it can be closed when the vehicle is stopped to isolate the unit from the vacuum system. A ball valve should be installed between the liquid ring pump and the liquid supply pipe to control the flow into the liquid ring pump. The amount of liquid supplied.

3. Before starting the unit, check whether there are any leaks in the pipes of the system. Before starting the liquid ring pump, check the car and check whether it is stuck. Before starting, the Roots pump oil tank and oil cup should be pressed according to the "Roots Vacuum Pump Instruction Manual". The internal oil level is injected to the specified requirements; and the cooling pipe of the roots pump is connected to ensure the cooling effect of the root seal of the roots pump.

4. Assemble the control cabinet and connect the motor and electrical contact vacuum gauge according to the electrical schematic diagram.

5. Before sending power to the electric control cabinet, it should also remotely measure its insulation resistance ≮10MΩ,?
And the frame and each motor are well grounded; before the unit starts, check whether the rotation direction of each pump is correct, and do other preparations before driving.

6. Adjust the lower limit of the vacuum degree on the electric contact vacuum meter to -0.092MPa and the upper limit to -0.096MPa; Note: When adjusting the upper and lower limits of the electric contact vacuum meter, the total power must be cut off first to prevent electric shock!

7. Supply power to the electric control cabinet, open the liquid supply valve and fill the liquid ring pump with water.
No-load test run: Manually start V1, and then start V2 and V3 in sequence. After each pump runs normally, stop V3, V2, and V1 in sequence; Load test run: Manually start V1, pre-pump the system to -0.092MPa, and start V2. -0.096MPa, start V3. After the system works normally for about 0.5 hours, the stopping sequence is the same as the no-load test operation. After the above test unit is normal, you can turn the steering switch to the automatic position, press the start button, V1 runs to -0.092MPa, and the electric contact vacuum gauge controls the roots pump to automatically start. When V2 is pumped to -0.096MPa, start V3 and go to the unit. Each pump works normally for 20 minutes, and the whole unit enters the normal working state. During operation, if the vacuum degree is lower than the limit value due to a certain factor, the roots pump will automatically stop running. When the vacuum degree returns to the limit value, the roots pump will restart.

8. Before shutting down, close the butterfly valve connected to the unit and press the stop button to stop the vacuum unit.


Three-stage and four-stage units (roots pump + roots pump + roots pump + water ring pump)


The main pump of this vacuum pump unit is V4 type Roots vacuum pump, and V3, V2 type Roots vacuum pump and V1 type liquid ring vacuum pump are used as the foreline pump (as shown in system diagram 3). Shanghai Wanjing Pump Industry has suggested to ensure the normality of each pump. To operate, the following procedures should be followed:

1. Check the integrity of the equipment before installation, and familiarize yourself with the operating instructions of each pump.

2. Fix the bottom corner of the vacuum pump unit and connect the pipeline as required.
Note: When connecting the air inlet pipeline, a 20 to 40 mesh filter should be installed in the pipeline above the unit to prevent foreign matter such as welding slag from entering the vacuum unit. It can be taken out after the pipeline passes the pumping experiment and the test run is successful. It is best to be able to install a Y strainer. A valve should be installed above the air inlet of the roots pump and connected to the system, so that it can be closed when the vehicle is shut down to isolate the unit from the vacuum system; a ball valve should be installed between the liquid ring pump and the liquid supply line to control the liquid ring pump Internal supply volume. 2LSJ Type Two-stage Water Jet Roots Vacuum Pump Unit

3. Before starting the unit, check whether there are any leaks in the pipes of the system. Before starting the liquid ring pump, check the car and check whether it is stuck. Before starting, the Roots pump oil tank and oil cup should be filled according to the "Roots Vacuum Pump Instruction Manual". Fill the oil level to the specified requirements; assemble the control cabinet, connect the motor and the electric contact vacuum gauge according to the electrical schematic diagram; and before transmitting power to the electrical control cabinet, its insulation resistance should be remotely measured ≮10MΩ, and the frame and each motor have good Grounding; adjust the lower limit of electrical contact vacuum gauge B1 to -0.092MPa, the upper limit to 0, the lower limit of B2 to -0.096MPa, the upper limit to -0.098MPa, connect water and gas sources, and ensure the cooling of the shaft end of each Roots pump Effect: Check whether the rotation direction of each pump is correct, and do other preparations before driving.

4. Supply power to the electric control cabinet, open the liquid supply valve and fill the liquid ring pump with water.
No-load test run: Manually start V1, start V2, V3, and V4 pumps in sequence, and then stop V4, V3, V2, and V1 in order;
Load test: Manually start V1, and simultaneously open the valve F2 pre-pumping system to -0.092MPa, close the valve F2 to start V2 to -0.096MPa, start V3 to -0.098MPa, and start V4. After the system works normally for about 0.5 hours, close valve F1 and open valve F4; the stopping sequence is the same as the no-load test operation, and close each valve. After the above test unit is normal, you can turn the steering switch to the automatic position, press the start button, start V1, F1, F2, F3 to -0.092MPa, automatically close the valve F2, and the electric contact vacuum gauge controls the roots pump to automatically start V2 When pumping to -0.096MPa, V3 is automatically started to pump to -0.098MPa, and then V4 is automatically started until the pumps of the unit work normally for 20 minutes, and the manual start valve F4 is closed to close F1.

5. Before shutting down, close the butterfly valve connected to the unit and press the stop button to stop the vacuum pump unit .

Note

1. When the working fluid of the liquid ring pump is water, the circulating use will reduce the vacuum due to the rise in water temperature and affect the normal operation of the pump; therefore, it is necessary to supply cold water regularly and replace hot water, and it is best to directly drain cold water directly into the pump; When the vacuum pump unit is not used for a long time, the water in the pump should be drained to avoid accidents such as being stuck due to rusting next time.

2. Pay attention to the changes in the sound and current of the pump. If a drastic change is found, stop the machine immediately and inspect it. JZPX Rotary Vane Roots Vacuum Pump Unit

Electrical control instructions

The electrical control system of this vacuum unit is designed in strict accordance with the working procedures of each pump. In order to facilitate the use of the user, the manual debugging part and the automatic working part are generally set. If used in explosion-proof systems, explosion-proof control columns can be provided. When the user needs it, a microcomputer control program can be used.



Failure analysis and troubleshooting table

Common malfunctions cause Method of exclusion
Roots pump running?
Sudden parking
Roots pump overload:
1.Roots pump reverse
2. System leaks
3.Wheel rubbing caused by gear or transmission parts wear?
4.Electrical contact vacuum meter control failure
1.Correct motor steering
2. Overhaul and eliminate missing points
3.Repair wear parts
4.Repair the vacuum meter of electric contact
The degree of vacuum cannot meet the requirements 1. System leaks
2. The foreline pump is faulty and the vacuum is low
3.Roots pump seal is damaged
1. Overhaul and eliminate missing points
2.Check the seals
3.Replace the seals
Water droplets in the roots pump and oil pollution emulsification in the gearbox 1. The liquid ring pump is filled with too much water before starting or the butterfly valve is not closed before stopping. Water enters the roots pump.
2.Vacuum liquid blocking valve is damaged
1.Remove water and change oil
2. Repair the valve
The motor does not run normally 1.Phase of motor
2.The power supply is abnormal
3.The AC contactor is damaged
1.Check if the power connector is disconnected
2.Check if the power is out of phase
3.Change AC contactor

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