Construction principle of water ring vacuum unit

Water ring vacuum pump: the primary effect of water ring vacuum pump in the unit is to form the preparation vacuum required by roots vacuum pump. In general, the limit vacuum degree of single-stage water ring vacuum pump is not high, while the pre vacuum required by roots vacuum pump produced in China is relatively high, so in fact, we don't need to use single-stage water ring vacuum pump as the front-end pump of Roots vacuum pump, but rather adopt The two-stage water ring vacuum pump with lower limit pressure is used as the front stage pump, which can also reduce the limit pressure of the unit.

The limit pressure of one pump and one water ring vacuum pump is 400pa, which can satisfy the general vacuum demand, but its application scale will be restricted to a certain extent. If two roots vacuum pumps are used in series and combined with the water ring vacuum pump, the limit pressure of the unit can be greatly increased (up to 25Pa). Therefore, in this type, two roots vacuum pumps are generally seen in series, and then the two-stage pump is used as the front stage pump to form the unit. If a higher limit pressure is required, three roots vacuum pumps and water ring vacuum pumps can be used, and the limit pressure can reach 1pA

If it is required to deal with many water vapor vacuum systems, it is more appropriate to use water ring vacuum pump. However, due to its low limit vacuum degree, the limit vacuum degree of the whole unit is relatively low. Although in the vacuum pumping system with high vacuum degree, the mechanical vacuum pump with high demand limit vacuum is used as the pre-stage pump. The pneumatic mechanical vacuum pump can be paralleled with the water ring vacuum pump as the front pump of the pump. When the vacuum is dry, the water ring vacuum pump shall be pre pumped until its water vapor is greatly reduced, and then the pneumatic mechanical vacuum pump shall be started to cut off the water ring pump. If you need a long time to finish a boring situation, you need less cooling water and power

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