High Vacuum Food Industry Drying Water Ring Pump

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Model NO.: SK-30
Ultimate Pressure: 80 hPa, 60 Torr
Motor Power: 55 kW
Rotating Speed: 980 rpm
Water Supply: 75 L/min
Inlet & Outlet Dimensions: 100 mm
Weight: 1200 kg
Trademark: DVE
Transport Package: Neutral Wooden Case
Specification: CE Mark, High-Level Spare Parts
Origin: Zhejiang, China
HS Code: 8414100090

DESCRIPTION

The 2SK series two-stage liquid ring vacuum pumps are designed to operate efficiently, similar to two SK series water ring vacuum pumps. While the SK series vacuum pumps can only achieve a maximum vacuum of -700 mmHg, the 2SK series was developed in the 1980s to meet the need for high vacuum and large pumping speed under such conditions. This pump is particularly suitable for applications requiring high performance in vacuum environments.
High Vacuum Food Industry Drying Water Ring Pump

ADVANTAGE

1. Compared with SK water vacuum pumps, it provides higher vacuum and pumping speed.
2. Simple structure and easy maintenance.
3. The working medium is typically water, resulting in low maintenance costs.
4. Widely used in various industries for handling water vapor, flammable, explosive gases, and gases containing small amounts of dust or liquid.
5. Capable of operating in harsh conditions.
 

FEATURES

1. The SK and 2SK series water ring vacuum pumps are suitable for exhausting both ordinary gases and condensable gases (such as water vapor). Due to their isothermal compression characteristics, they can safely handle flammable and explosive gases. When made from anti-corrosion materials, they can also be used for corrosive gases.
 
2. The 2YK series liquid ring vacuum pumps offer higher vacuum levels and better applicability. By selecting the appropriate working media, different types of gases can be pumped effectively, making them suitable for a wider range of applications.
 
3. These pumps operate smoothly with low noise and energy consumption. They are 30% more energy-efficient compared to water jet and water vapor jet pumps.

WORK THEORY

High Vacuum Food Industry Drying Water Ring Pump
 

PARAMETER

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

APPLICATION
It can be applied to 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 electronics 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.

Regular Selection for Water (Liquid) Ring Vacuum Pump
1. Based on the vacuum value
(1) If the pump is operated for a long time with an inlet pressure range between 1.3×10⁴~1×10⁵ Pa (between 100 and 760 Torr), please choose the SK series water ring vacuum pump.
(2) If the pump is operated for a long time with an inlet pressure range between 5×10³~1.3×10⁴ Pa (between 40 and 100 Torr), please choose the 2SK series water ring vacuum pump.
(3) If the pump is operated for a long time with an inlet pressure range between 1×10³~1.3×10⁴ Pa (between 8 and 100 Torr), please 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 features; no chemical reaction with the pumped gas; no corrosion to the pump; no pollution to the environment.
(4) Economy

If water is selected as the working medium, the best supply water temperature should be lower than or equal to 15°C; the highest should not exceed 40°C. When using transformer oil or other low viscosity and low 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 where a liquid with a lower boiling point is selected as the working medium, a cooling unit must be equipped to cool down the working medium to ensure that the maximum temperature is 30°C-50°C, which is lower than the boiling point. For a closed circulation system of working media, 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.

3. Choose the dynamic seal of the shaft:
Choose the packing seal in general occasions; choose the mechanical seal when the pump is used in a no-leak occasion.

4. Choose the material of the part that the gas passed:

(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 passed should be made of stainless steel 304 and 306, or other materials suitable for the respective corrosive gas, or the parts should be coated with anti-corrosion coating.
 

5. The motor should be selected based on pumping pressure.

If the pump is used for vacuuming while transferring gas, the pressure at the pump outlet exceeds the 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 modified. The power of the equipped motor should be significantly increased. Additionally, a special gas-liquid separator and auto-drain unit should be equipped.
When the outlet pressure is below 0.15 MPa, the vacuum pump can be modified as a compressor. The power of the equipped motor should be increased appropriately.


6. Composition methods of the water ring vacuum pump system
The open circulation system should be used if the working liquid in the outlet does not need to be circulated or only partially circulated.
The closed circulation system should be used if the working liquid in the outlet must be circulated.


High Vacuum Food Industry Drying Water Ring Pump
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