Liquid Ring Vacuum Pump Type

There are many kinds of EVP liquid ring vacuum pumps. The type of liquid ring vacuum pump has 2BV, 2BE, 2SK, SK, among which 2BV liquid ring vacuum pump has higher performance-price ratio. The type selection of liquid ring vacuum pump should be based on your on-site process, the required vacuum degree and the amount of air pumping required.

The liquid ring vacuum pump is a vacuum pump used to drain underground methane. The vacuum pump has the advantages of high negative pressure, low flow rate, and is suitable for mines with small drainage volume and high negative pressure. The liquid ring vacuum pump is widely used because of its good safety and high suction negative pressure in general mines.

The structure model of the domestic liquid ring vacuum pump is basically based on the SZ series liquid ring vacuum pump imported from the Soviet Union in the 1950s (only four specifications, gas volume is 1.5 cubic meters/minute, 3.4 cubic meters/minute, 11.5 cubic meters/minute, 27 cubic meters/minute respectively). This series of liquid ring vacuum pump has low efficiency, high energy consumption, large volume and the structure of the Soviet Union’s water ring vacuum pump in recent decades. Many improvements have been made and many patents have been obtained. The domestic liquid ring vacuum pump has been improved in structure, its volume is smaller than the SZ series, its specifications are more complete, and its efficiency is also improved, but there is still a big gap compared with the advanced foreign level, such as 2BV series liquid ring vacuum pump and 2BE series liquid ring vacuum pump.

Liquid Ring Vacuum Pump

Technical parameters:

Curve No. Model Max. suction capacity Ultimate vacuum
Motor power
Operating liquidflow rate
m3/min m3/h
60V 2BV2-060 0.45 27 33mbar
0.81 2840 2.5 62 37
61V 2BV2-061 0.86 52 1.45 2840 2.5 65 41
70V 2BV2-070 1.33 80 2.35 2860 3 66 66
71V 2BV2-071 1.83 110 3.85 2880 4.7 72 85
110V 2BV5-110 2.75 165 4 1440 7.2 63 120
111V 2BV5-111 3.83 230 5.5 1440 8.8 68 150
121V 2BV5-121 4.66 280 7.5 1440 11 69 210
131V 2BV5-131 6.66 400 11 1460 16 73 280
161V 2BV5-161 8.33 500 15 970 22 74 390
110V 2BV6-110 2.75 165 4 1440 67 63 150
111V 2BV6-111 3.83 230 5.5 1440 10 68 200
121V 2BV6-121 4.66 280 7.5 1440 12 69 230
131V 2BV6-131 6.66 400 11 1460 17 73 315
161V 2BV6-161 8.33 500 15 970 23 74 426

At present, the development trend of liquid-ring vacuum pumps in China is good. Compared with other vacuum pumps, the sales volume of liquid-ring vacuum pumps ranks second. This is because liquid-ring vacuum pumps can effectively extract water vapor, corrosive gases and flammable and explosive gases, and can make large pumping speed. It can be widely used in various chemical processes and environmental protection and explosion-proof projects. With the development of demand for vacuum products in various industries, liquid ring vacuum pumps are developing towards large-scale, complete sets and larger pumping capacity under higher vacuum.

Liquid ring vacuum pump is widely used in many industrial processes, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture regain and vacuum degassing. Due to the rapid development of vacuum application technology, the liquid ring vacuum pump has been paid attention to in obtaining rough vacuum. Because the gas compression in the liquid ring vacuum pump is isothermal, it can extract flammable and explosive gases. In addition, it can also extract dusty and water-bearing gases. Therefore, the application of the liquid ring vacuum pump is increasing.

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