Liquid ring vacuum pump species
| Code name | The main features | Ultimate vacuum mmHg | Operating vacuum mmHg | Pumping speed range The m3 / min |
Seal form |
| SK | The single-stage liquid ring vacuum pump designed in China has a compact structure, and SK liquid ring vacuum pump has a high revolution, which can be directly connected with the motor without a reducer. Therefore, with a small structure size, it can obtain a large exhaust volume and a small floor area. At present, the mainstream low vacuum pump in China is water ring vacuum pump. | -700 | -640-700 | 0.15-120 | Packing, mechanical seal |
| 2SK | A two-stage liquid ring vacuum pump is designed in China, which is equivalent to two SK liquid ring pumps in series. Compared with the single-stage liquid ring pump, it has the characteristics of high vacuum degree and fast vacuum pumping speed. At present, the mainstream liquid ring vacuum pump in China. | -735 | -300-700 | 1.5-30 | Packing, mechanical seal |
| 2BV | No metal to metal contact, only one moving part The pump can handle liquid and / or soft solids without damage to internal parts The design allows sealing with a variety of fluids Low operating noise levels are in the 75-85 dB range The intake manifold and exhaust separator are optional equipment and are supplied separately. |
-735 | -300-700 | 0.45-8.33 | Mechanical seal |
| 2BE1 | 2BE1 series vacuum pump adopts the structure of single stage and single action, which has the advantages of simple structure, convenient maintenance, reliable operation, high efficiency and energy saving, and can adapt to the severe working conditions such as large displacement and load impact fluctuation. | -735-640
|
-330-700 | 5-400 | Packing, mechanical seal |
| SZ | Soviet technology, low efficiency, high energy consumption, not in line with the national energy conservation and emission reduction policy, has been eliminated in the early 1980s, mainly used in water pumps, has been | -640-700 | -300-700 | 1.5-27 | packing |
| SZB | Has been eliminated, mainly used in water pump diversion, has been replaced by SK series water ring pump. | -600 | -300-650 | 0.33-0.66 | packing |
| 2SY | Mainly used in water ring compressors, the maximum exhaust pressure is 0.6mpa | – | -300-550 | 6-30 | Packing, mechanical seal |
| 2YK | The structure is basically the same as the 2SK series, which can be used as the working fluid with the medium being pumped. The ultimate vacuum varies with the saturated vapor pressure of the pumping medium. The limit vacuum pump in the table is the limit vacuum pump when the working medium is transformer oil. | -755 | -300-720 | 1.5-30 | Packing, mechanical seal |
