In the operation of the vacuum unit, there is an indispensable step 3354 to achieve pre suction. Don’t underestimate the effect of pre pumping. It can determine the pumping speed and effect during the operation. Although the pumping speed of the manual dry oil pump of the vacuum unit is only predicted in advance, in order to avoid the slow efficiency when the vacuum unit is started.
First of all, we all know that when the suction pressure of the manual dry oil pump is low, the suction speed will be limited. The manual dry oil pump at the initial stage of use can alleviate this phenomenon in time, but the machine that has been used for too long will be worn to varying degrees. In this case, the speed of the machine will be reduced accordingly, and the effect is not satisfactory.
Up to now, the front-stage pump is required to work, but the process of pumping to the vacuum unit with the front-stage pump is very long. As the pressure of the pumping speed decreases, the pumping process will be intermittent and unsatisfactory. Therefore, to improve the pumping efficiency of the machine, it is necessary to extend the pre pumping time. If you want to shorten the working time in the vacuum unit, you can deliberately reduce the pre pumping time. Only in this way can the production efficiency of the main pump of the vacuum unit be improved and maintained.
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