For these different types of imported dry vacuum pumps, we are eager to reduce their physical size. However, this is inconsistent with the pumping rate of vacuum pump, because the pumping rate of vacuum pump is directly proportional to the volume of vacuum pump, and small physical size means small volume. Of course, there is also an important factor that affects the pumping rate of vacuum pump, that is, the rotating speed. In order to match the pumping rate of small-scale vacuum pump with that of large-scale vacuum pump, it is necessary to increase its speed. There are two ways to change the speed of vacuum pump, one is to change the frequency of power supply, that is, to use frequency converter; the other is to change the transmission ratio of gearbox. Among them, the advantage of using frequency converter is that it can provide a closed-loop control, but it is easy to cause torque loss under large load. Changing the transmission ratio of the gearbox is a very economic way, of course, it can only provide a single uncontrollable speed.
Now, we can see that the dry vacuum pump has so many different designs, they have their own characteristics and advantages and disadvantages. All along, the use cost is an important factor that affects people's choice of vacuum pump. More and more vacuum pump users realize that the stability of vacuum pump operation should also be considered. Because the unexpected error of vacuum pump will cause the use efficiency of the machine to reduce, affect the production and delivery time, and even cause the scrap of processed products and damage of other parts of the machine. As the screw type design is single-stage design, compared with the multi-stage pump such as round split type, claw type and combined type, the number of parts used is reduced by 60%. This makes it have a great advantage in stability and maintenance cost in the future.
Water Ring Vacuum Pump
Dry Type Oilless Vacuum Pumps
Rotary Vane Vacuum Pump
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