The impeller rotor of liquid ring vacuum pump rotates to produce water ring. It is a mechanical vacuum pump that the volume between the water ring and the blade changes periodically due to the eccentric rotation of the rotor. Reciprocating vacuum pump uses reciprocating motion of piston to pump air. The mechanical vacuum pump with oil seal can be divided into fixed plate type, rotary plate type, slide valve type, cycloid type and so on. Roots vacuum pump is a mechanical vacuum pump with a pair of synchronous and high-speed rotating sole rotors. The pump can not be pumped alone, and the front stage needs to be equipped with oil seal, water ring and other vacuum pumps that can discharge air directly.
The limit pressure of liquid ring vacuum pump is different, and the use situation is also different, because different liquids, 2BV explosion-proof liquid ring vacuum pump, when the pressure is lower than 50-60hpa, cavitation phenomenon will occur, and the parts of the pump will be damaged. When the pump is close to the limit pressure, the pumping speed is very low, and the water at the pump inlet is initially happy. When it is turned to the outlet of the pump, the bubbles formed initially split. This will produce a lot of noise, together with the pump drive wheel and pump cavity and other parts are gradually damaged. This appearance is often called cavitation. Once cavitation phenomenon occurs, 2BV liquid ring vacuum pump must introduce a small amount of fresh air through the small valve. In this case, a small hole is made in the entrance channel to quantitatively add some fresh gas. If the gas ejector is used, the cavitation image will not occur.
2BV liquid ring vacuum pump and SK liquid ring compressor are widely used in the mine industry, and the structure and working principle between them have the same operation effect, so it is easy to mix them up when using or purchasing. Therefore, we need to understand the differences between 2BV liquid ring vacuum pump and SK liquid ring compressor, so as to make good use of them in various aspects They are distinguished.
The structure of gas water separator is different
1. The gas water separator of vacuum pump is flat top, and the overflow pipe is ordinary water pipe.
2. The top of the gas water separator of the compressor is spherical, and its overflow pipe is controlled by a float regulating valve to prevent the compressed gas from escaping when the water level is below the overflow pipe, so as to reduce the gas pressure and good gas volume.
The size of the exhaust hole is different: when the same size, the exhaust hole of the compressor is smaller than that of the vacuum pump.
Impeller circumferential speed range is different
1. Compressor 18 ≤ μ 2 ≤ 24, compressor μ 2 excellent = 23-24 M / s.
2. Vacuum pump 14 ≤ μ 2 ≤ 17, μ excellent = about 16 m / s.
Compression ratio range is different: the so-called compression ratio, that is, the compression ratio of higher efficiency, generally speaking, the compression ratio of vacuum pump is higher than that of compressor.
Vacuum pump is a kind of device to maintain vacuum by pumping air from the container under the action of electromagnetic force. Vacuum pump is usually widely used in low temperature equipment, papermaking machinery, vacuum equipment, petroleum, mining, foundation treatment and other fields. Different vacuum pumps have different working principles and uses.
There are some differences in the use of these two kinds of equipment, so it is more necessary to distinguish SK liquid ring vacuum pump and 2BV liquid ring vacuum pump in the later use, so that the use of suitable equipment in the suitable industry will also make our operation more smooth.
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