一、Features: 
1. The high speed of the large pump and the high amount of air pumped can facilitate the timely and rapid discharge of the gas in the mine.
2. This series of pumps have the advantages of simple structure, convenient maintenance, reliable operation and wide application range. It can adapt to harsh working conditions such as large displacement and fluctuating load.
3. The temperature of compressed gas drawn out by the gas pump is not high, this exhaust gas temperature is also safe for gas extraction to some extent.
4. There is no direct friction between the internal moving parts of the gas drainage pump with small wear amount and good safety performance.
二、Model Description: 

Example: 2BEP 92, 0, 2 -- B, D, 3, C

2BEP -- liquid ring vacuum pump series code

92 -- Nominal radius of impeller (unit: cm)

0 -- pump body has no partition code." 0" no divider, 6" no divider.

2 -- Minimum suction pressure up to 160mbar.

B -- Structural material code. " B" is ordinary material;" B1" main flow parts spray polymer materials;" E" grey cast iron/nickel chromium stainless steel;" F" nickel chromium stainless steel.

D -- Transmission code. "D" direct transmission;" V" belt drive, "G" reducer drive.

3 -- shaft seal form code: "3" is outer water supply packing seal;" 4" for internal water supply packing seal;" 2" is a single-face mechanical seal;" 5" double end mechanical seal.

C -- Pump speed code (unit: r/min)

三、Spectrogram: 
四、Application field: 
Coal mine: gas drainage, vacuum dewatering, etc
Petrochemical industry: gas pressure, vacuum system
Paper industry: vacuum dehydration
Iron and steel metallurgy: vacuum dewatering
Cigarette industry: cigarette machine negative pressure system, vacuum moisture-proof