Negative pressure roots blower

Now many customers can't tell what is negative pressure roots blower, what is roots vacuum pump, what is vacuum pump and what is roots blower. They also made some mistakes during the acquisition. Now, to sum up the following points, in Roots blower profession, roots vacuum pump is what most people call negative pressure roots blower. Its principle is the same as roots blower. It belongs to volume reversal blower Machine. 

A reverse compressor which uses two blade rotors to make relative motion in the cylinder to compress and transport gas. The roots blower is simple in structure and easy to make. It is suitable for gas transportation and pressurization in low pressure occasions. Conceptually, roots blower is a kind of usage in vacuum pump. Positive pressure blowing is used with large air volume, which can not be completed by vacuum pump, such as water tank aeration, oxygen supply, powder transportation, etc.

There are several kinds of vacuum pumps, such as water ring vacuum pump, rotary vane vacuum pump, steam jet pump, molecular pump, reciprocating vacuum pump, fixed vane vacuum pump, slide valve vacuum pump, residual cycloid vacuum pump, roots vacuum pump, etc. the principle is to use the skewed rotor in the pump cavity to form the gas discharged from the pump after the volume change of rotation, mainly in the suction process.

When the volume of suction cavity increases, the vacuum degree decreases. When the gas in the container is sucked into the pump cavity, the volume becomes smaller and the pressure increases during the exhaust process. After all, the inhaled gas is discharged out of the pump through the oil seal. In terms of parameters, most of the vacuum degree of the vacuum pump is higher than that of the roots vacuum pump, and the suction volume is also larger than that of other roots vacuum pumps, so the negative pressure can be smaller than that of the roots vacuum pump.


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