We have talked about a lot of knowledge about the water ring vacuum pump in the previous article. There is a water ring compressor and its function is not bad, but there are some differences in their application fields. That is because the two kinds of equipment are different. Let’s take a look at their differences.
Water ring vacuum pump: the equipment inlet is in vacuum state, and the outlet is in atmospheric pressure (atmospheric pressure) state to discharge the gas. The purpose is to establish a vacuum for the closed container or system of the previous stage.
Water ring compressor: the equipment inlet is atmospheric pressure or slightly lower than atmospheric pressure (atmospheric pressure), and the outlet is higher than atmospheric pressure to discharge gas. The purpose is to compress the gas to a certain pressure and then enter the next stage system.
1. Different shaft power
With the same power of water ring vacuum pump, the effective actual power of water ring compressor is often larger than that of vacuum pump, and the circumferential speed of impeller is often selected according to the demand of vacuum pump. When used as water ring compressor, the equipment will be in low efficiency zone and the required shaft power will be greater. Generally speaking, the power of water ring compressor is larger than that of vacuum pump. And their compression ratio range is also different, the so-called compression ratio is the compression ratio with higher efficiency. Usually, the compression ratio of vacuum pump and compressor.
2. Impeller circumferential speed range is different
The pressure difference between suction chamber and compression chamber is the main factor to determine the circumferential velocity of impeller. In general, the pressure difference of the air pressure ring of the vacuum compressor is the atmospheric pressure of the water ring. From the above introduction, we can know that although the water ring pump of the same specification, the performance is different when it is used as a vacuum pump and a compressor. When the vacuum pump is used as a compressor, it is necessary to increase the speed, so as to better use it.
3. The size of the vent is different
The same size, the water ring compressor exhaust hole will generally be smaller than the vacuum pump. However, according to the principle of one machine for dual use, the same water ring vacuum pump, whether used as a vacuum pump or as a compressor, generally uses the same motor. Not only that, the size of the exhaust port is the same. Only when the power of the matching motor and the type of the gas-water separator are selected, can different choices be made according to their different types.
4. The structure of gas water separator is different
The top of the gas-water separator of the compressor is spherical, and the overflow pipe is controlled by the float regulating valve, while the gas-water separator of the vacuum pump is flat top, and the overflow pipe is just a common water pipe.
From the above we can know that in general, the water ring vacuum pump and water ring compressor are the same, or there are some differences in some components, but fundamentally speaking, their compression ratio is the main reason for the difference and application.
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