DESCRIPTION The 2SK series two-stage liquid ring vacuum pumps are designed to operate efficiently, similar to two SK series water ring vacuum pumps. Since the SK series pumps only achieve a maximum vacuum of -700 mmHg, China developed the 2SK series water ring vacuum pump in the 1980s to meet the need for high vacuum and large pumping speed under high vacuum conditions. ADVANTAGE FEATURES PARAMETER APPLICATION Regular Selection for Water (Liquid) Ring Vacuum Pump 3. Choose the dynamic seal of the shaft: 5. The motor should be selected based on the pumping pressure. Pc Hollow Profile Board Extrusion Equipment,Pc Hollow Profile Board,Pc Sheet Extrusion Equipment,Pc Hollow Profile Board Production Line Zhejiang Jinhai Plastic Machinery Co., Ltd. , https://www.jinhaiextruder.com
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WORK THEORY
Model
Displacement
(m³/min)
Ultimate Pressure
hPa Torr
Motor Power
(kW)
Rotating Speed
(rpm)
Water Supply
(L/min)
Inlet & Outlet Dimensions (mm)
Weight
(kg)
SK-0.5B
0.5
47 35
1.5
2900
8
25
45
SK-0.8
0.8
47 35
2.2
2900
10
40
60
SK-1.5
1.5
47 35
4
2900
15
40
75
SK-3
3
80 60
5.5
1450
25
50
153
SK-6
6
80 60
11
1450
35
50
210
SK-12
12
80 60
22
980
70
100
600
SK-12B
12
80 60
18.5
980
60
100
450
SK-25
25
80 60
45
980
70
100
900
SK-30
30
80 60
55
980
75
100
1200
SK-42
42
80 60
75
740
100
100
1500
2SK-2B
2
40 30
5.5
1450
20
50
185
2YK-2B
2
6.6 5
5.5
1450
20
50
185
2SK-3
3
40 30
7.5
1450
25
50
320
2YK-3
3
6.6 5
7.5
1450
25
50
320
2SK-6B
6
33 30
11
1450
35
50
370
2YK-6B
6
6.6 5
11
1450
35
50
370
2SK-12
12
33 25
22
980
70
80
850
2YK-12
12
6.6 5
22
980
70
80
850
2SK-25
25
33 25
55,45
980
60-110
100
926
This pump is suitable for vacuum drying, vacuum degassing, vacuum concentration, vacuum evaporation, and vacuum impregnation processes in chemical, pharmaceutical, metallurgy, food, medicine, textile, papermaking, and electrical industries, including the electronic field. It can be combined with Roots vacuum pumps and atmospheric jet pumps to create a vacuum system that achieves high vacuum, high efficiency, and low power consumption.
1. Based on the vacuum value
(1) If the pump is operated for a long time with an inlet pressure range between 1.3×10â´~1×10âµ Pa (between 100 and 760 Torr), choose the SK series water ring vacuum pump.
(2) If the pump is operated for a long time with an inlet pressure range between 5×10³~1.3×10ⴠPa (between 40 and 100 Torr), choose the 2SK series water ring vacuum pump.
(3) If the pump is operated for a long time with an inlet pressure range between 1×10³~1.3×10ⴠPa (between 8 and 100 Torr), choose the 2YK series liquid ring vacuum pump.
2. Working Media
There are four principles to choose working media (i.e., ring liquids):
(1) Lower saturated steam pressure
(2) Lower viscosity
(3) Stable physical and chemical properties; no chemical reaction with the pumped gas; no corrosion to the pump; no pollution to the environment.
(4) Economy
Use a packing seal in general occasions; use a mechanical seal when the pump is used in a no-leak occasion.
4. Choose the material of the part that the gas passed:
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6. Composition methods of the water ring vacuum pump system
An open circulation system should be used if the working liquid in the outlet does not need to be circulated or only partially circulated.
A closed circulation system should be used if the working liquid in the outlet must be circulated.
High Quality Water Ring Vacuum Pump for Lab
Model NO.: SK-1.5
Motor Power: 4kw
Rotating Speed: 2900rpm
Water Supply: 15L/Min
Inlet & Outlet Dimensions: 40mm
Weight: 75kg
Trademark: DVE
Transport Package: Wood Case
Specification: With CE Mark, European Market Standard
Origin: Zhejiang, China
HS Code: 8414100090
1. Compared with SK water vacuum pump, it offers higher vacuum and pumping speed.
2. Simple structure and easy maintenance.
3. The main working medium is water, resulting in low maintenance costs.
4. The pump is widely used in various areas, capable of handling water vapor, flammable, explosive gases, and gases containing small amounts of dust and liquid.
5. The pump can work effectively in harsh conditions.
1. The SK and 2SK series water ring vacuum pumps can be used for exhausting both ordinary gases and condensable gases (such as water vapor). Due to their isothermal compression feature, they can handle flammable and explosive gases. When using anti-corrosion materials, these pumps can also be used for corrosive gases.
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2. The 2YK series liquid ring vacuum pumps offer higher vacuum and better adaptability. By selecting suitable working media, different types of gases can be pumped, making them applicable in a wider range of industries.
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3. These pumps run smoothly, with low noise and energy consumption. They save up to 30% compared to water jet and water vapor jet pumps.
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If water is selected as the working medium, the best temperature of supply water should be lower than or equal to 15°C; the highest one should not exceed 40°C. When using transformer oil or other low viscosity and saturated vapor pressure industrial oils as the working medium, the general supply temperature should not exceed 40°C, and the working medium temperature inside the pump chamber should not exceed 60°C. In special circumstances, when using a liquid with a lower boiling point as the working medium, a cooling unit must be equipped to cool the working medium to ensure the maximum temperature is between 30°C and 50°C, which is below the boiling point. For a closed circulation system of the working medium, a liquid storage unit and cooler must be equipped, and a gas-liquid separator must be installed at the outlet. A mechanical seal should be used for the dynamic seal of the shaft.
(1) For non-anti-corrosion pumps, the shaft is made of 45# steel or 40Cr, and other parts are made of cast iron or brass;
(2) For anti-corrosion pumps, the parts that the gas passes through should be made of stainless steel 304 and 306, or other materials suitable for the respective corrosive gas, or the parts should have anti-corrosion coatings.
If the pump is used for vacuuming while transferring gas, the pressure at the pump outlet exceeds standard atmospheric pressure.
When the outlet pressure exceeds 0.15 MPa, a special double-stage liquid ring compressor should be chosen instead of a vacuum pump. The power of the equipped motor should be significantly increased, and a special gas-liquid separator and automatic drain unit should also be equipped.
When the outlet pressure is below 0.15 MPa, the vacuum pump can be refitted as a compressor. The power of the equipped motor should be increased appropriately.
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