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Product Center
Two-stage 2XZ type rotary vane vacuum pump
Air extraction rate: 0.015-1.8m³/min
Vacuum degree: 6.7×10-6MPa
Efficiency: 0.12-2.2kw
Rotation speed: 1400rpm
Pump weight: 15-98kg
Price: 0.29-2.98 ten thousand
The 2XZ type vane vacuum pump is a double-stage structure with direct coupling, the pump is coupled to the motor, high speed, small size, compact structure, smooth and convenient operation, can be used in the manufacturing of electric vacuum devices, thermos manufacturing, vacuum welding, printing, thermoforming, refrigeration equipment repair, and support for instruments and meters.
Product Description
Product parameters
Meaning of the double-stage vane vacuum pump model type 2XZ
For example: 2XZ8
2- indicates double-stage pump
X- indicates vane vacuum pump
Z- indicates coupling between pump and motor
8- indicates extraction speed per second
Uses of the double-stage vane vacuum pump type 2XZ product
1. The 2XZ type vane vacuum pump is used to extract gases from a specific sealed container, achieving a certain vacuum. Due to the high development of modern science and technology, vacuum pumps are applied in various scientific fields and in many companies and institutions, being useful for research and production in metallurgy, chemistry, light industry, petroleum, medicine, pharmaceuticals, printing and dyeing, electricity, electric vacuum, semiconductors, food, atomic energy, textiles, among others, as well as in scientific institutions, universities, and industrial and mining enterprises.
2. Because the vane vacuum pump is made of ferrous metals and is quite precise, the entire operation of the pump is interconnected. Therefore, it is not suitable for extracting gases with high oxygen content, toxic, explosive, corrosive to ferrous metals, or chemically reactive with vacuum oil. It should also not be used as a compressor or transport pump. Pumps with purge devices can extract certain condensable gases.
3. The vane vacuum pump can be used to directly obtain a vacuum degree below 10^-3 torr, as well as to work together with other vacuum processes.
4. The vane vacuum pump is generally used in environments with ambient temperature not lower than 5℃ and relative humidity not exceeding 90%.
5. The 2XZ type vane vacuum pump is one of the basic equipment for extracting gases from sealed containers. It can operate alone or as a preliminary stage pump for booster pumps, diffusion pumps, molecular pumps, maintenance pumps, and titanium pumps. It is used in the manufacture of electric vacuum devices, thermos, vacuum welding, printing, thermoforming, refrigeration equipment repair, and in instruments and apparatus. Due to its small size, light weight, and low noise, it is especially suitable for laboratory use.
6. Under an ambient temperature within 540, and an inlet pressure less than 1.3×10^3 Pa, continuous long-term operation is allowed. If the relative humidity of the extracted gas exceeds 90%, the purge valve must be opened.
7. Continuous operation with the air inlet open to the atmosphere should not exceed one minute.
8. It is not suitable for extracting gases corrosive to metals, chemically reactive with pump oil, containing dust particles, with high oxygen content, explosive or toxic.
Product features of the double-stage vane vacuum pump type 2XZ
Extraction speed: 0.15~15 L/S (liters per second) | Ultimate pressure: ≤6×10^-2 Pa (pascal)
Ultimate vacuum: ≤1.3 Pa (pascal) | Gas type: clean and dry air at ambient temperature without other mixtures, air with dust or moisture is not allowed.
Working requirements: when the inlet pressure is greater than 6500 Pa, continuous working time should not exceed 3 minutes to avoid damage from oil atomization.
Working requirements: when the inlet pressure is less than 1330 Pa, long-term continuous operation is allowed.
Ambient temperature: the 2XZ type vane vacuum pump is generally used in environments with ambient temperature not lower than 5℃ and relative humidity not exceeding 90%.
The 2XZ double-stage vane vacuum pump is a volumetric pump that, through the continuous rotation of the vanes in the pump chamber, divides the chamber into two different volumes that periodically expand and contract, sucking in, compressing, and expelling gas to achieve vacuum in the container. The pump consists of two working chambers connected in series and rotating at the same speed in the same direction. The extracted gas enters through the preliminary stage pump chamber, is compressed and expelled or directed to the subsequent stage pump chamber, where it is compressed again and expelled through the mist separator (exhaust pipe) outside the pump.
1. The pump is basic equipment for obtaining vacuum, it can operate alone or as a preliminary stage pump and pre-extraction pump in high vacuum systems.
2. The pump's air inlet should not remain open to the atmosphere for more than three minutes.
3. The pump is not suitable for extracting gases corrosive to metals, chemically reactive with pump oil, containing dust particles, with high oxygen content or explosive gases.
4. The pump should not be used as a compressor or transport pump.
5. Pump working conditions: temperature between 5℃ and 40℃, relative humidity not exceeding 90%, and inlet pressure less than 1333 Pa, allowing long-term continuous operation.
6. When connecting the power supply, follow the motor nameplate instructions and ensure the motor rotation direction matches the arrow on the bracket.
7. The extracted container's piping should have a diameter not smaller than the pump inlet, be short with few bends, and leaks should be avoided.
8. Before each start, check the oil level; when stopping the pump, refill oil up to 4/5 of the sight glass height.
9. Use clean SY1634-70 number 1 oil for vacuum pumps.
10. The pump can start once under atmosphere or any vacuum degree. If difficult to start, remove the inlet pipe plug and then start.
Model | Extraction Speed (L/S) | Ultimate vacuum (Pa) | Rotation speed (rpm) | Work Voltage (V) | Motor Power (kw) | Air intake Diameter (mm) | Oil consumption (L) | Pump oil Temperature rise (℃) | External dimensions | Total weight (kg) | |||
Closed purge valve | Open purge valve | Length | Width | Height | |||||||||
XZ-0.5 | 0.5 | 10 | 1400 | 220 | 0.09 | 7 | 0.18 | >40 | 225 | 110 | 220 | 7.2 | |
XZ-1 | 1 | 10 | 1400 | 220 | 0.12 | 10 | 0.25 | >40 | 275 | 110 | 220 | 7.5 | |
2XZ-0.25 | 0.25 | 6.7×10-1 | 220 | 0.12 | 10 | 0.3 | >40 | 440 | 125 | 224 | 11 | ||
2XZ-0.5 | 0.5 | 6.7×10-2 | 1.33 | 1400 | 220 | 0.18 | 13 | 0.42 | 445 | 125 | 256 | 13 | |
2XZ-1 | 1 | 6.7×10-2 | 1.33 | 1400 | 220 | 0.25 | 19 | 0.4 | >40 | 445 | 125 | 256 | 14 |
2XZ-2 | 2 | 6.7×10-2 | 1.33 | 1400 | 380/220 | 0.37 | 19 | 0.48 | 478 | 148 | 277 | 20 | |
2XZ-4 | 4 | 6.7×10-2 | 1.33 | 1400 | 380/220 | 0.55 | 30 | 0.55 | 518 | 148 | 277 | 22 | |
2XZ-8 | 8 | 6.7×10-2 | 1.33 | 1400 | 380 | 1.1 | 30 | 0.7 | >50 | 575 | 185 | 315 | 55 |
2XZ-15 | 15 | 6.7×10-2 | 1.33 | 1400 | 380 | 1.5 | 40 | 0.8 | >70 | 578 | 185 | 315 | 55 |
Operating instructions
1. Check the oil level; when stopping the pump, it should be filled to the center of the oil mark. A level too low cannot seal the exhaust valve, affecting the vacuum. A level too high may cause oil spray when starting with atmospheric air. During operation, the oil level may rise, which is normal. Use clean vacuum pump oil of the specified brand, adding it through the filling hole. After filling, turn the cap. The oil must be filtered to prevent particles from blocking the holes.
2. The 2XZ type rotary vane vacuum pump can start once with atmospheric air or any vacuum level. If a solenoid valve is installed at the pump inlet, it must operate simultaneously with the pump.
3. When the ambient temperature is high, the oil temperature rises, viscosity decreases, and saturated vapor pressure increases, which may reduce the ultimate vacuum, especially when measured with thermocouples. Improving ventilation or oil quality can improve the ultimate vacuum.
4. Check the ultimate vacuum of the 2XZ type rotary vane vacuum pump with a compression mercury manometer. After a preliminary vacuum test and with the pump at stable temperature, connect the pump inlet directly to the manometer; the ultimate vacuum will be reached in 30 minutes. The total manometer reading is influenced by the oil, the manometer, and regulator errors, so it is only for reference.
5. If the relative humidity is high or the extracted gas contains much condensable vapor, after connecting the extracted container, open the purge valve and operate for 20-40 minutes before closing it. Before stopping the pump, open the purge valve to run unloaded for 30 minutes to prolong the oil life.
6. Oil selection for the 2XZ type rotary vane vacuum pump: oil viscosity affects starting power and ultimate vacuum; high viscosity favors vacuum but requires more starting power. The saturated vapor pressure of the oil at pump temperature affects the total limit pressure; the lower, the better. High-speed vacuum pump oil and diffuser pump oil #3 have higher viscosity and lower saturated vapor pressure than vacuum pump oil #1, but oil #3 is more expensive. Oil choice should be based on these considerations and specific requirements.
(1) Generally, for applications requiring a total pressure above 6X10-2 Pa, it is recommended to use high-speed vacuum pump oil produced in Shanghai. For small pumps under 4 liters/second, vacuum pump oil #1 can be used; for directly coupled pumps over 8 liters/second, diffuser pump oil #3 can be used.
(2) If vacuum requirements are not high and the oil is frequently contaminated and changed, and vacuum pump oil supply is difficult, mechanical oil #50 can be used as a substitute.
(3) If the ambient temperature is low, starting is difficult, and ultimate vacuum requirements are not high, vacuum pump oil or mechanical oil with slightly lower viscosity can be used.
Tip: For more performance parameters of the 2XZ type double-stage rotary vane vacuum pump, click →【Water pump selection】 to consult.
Why Choose Us?
Changsha Zhonglian Pump Industry Co., Ltd. was established in 1989, following the reform of the Changsha Water Pump Factory. It is a national high-tech comprehensive enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Stock Exchange on December 31, 2019, with the abbreviated name "Zhonglian Pump Industry" and stock code: 600275HN. It is currently a key enterprise in China's centrifugal pump industry and one of the leading domestic manufacturers of multi-stage pumps, headquartered in Changsha, Hunan, a historical and cultural city in China.
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Models in stock can be shipped by the next day at the latest. Others are custom-made, and depending on the product size and specific project conditions, the delivery time is generally between 7-90 days. Please consult our sales manager for details: 0731-88632200 。
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