Hot sales of dry vacuum pump manufacturers

The use of an appropriate model of dry vacuum pump solves two major problems that the original mechanical vacuum pump cannot solve: first, the working medium backflow of the pump pollutes the pumped container, which affects the quality and quantity of products in many cases and increases the maintenance cost of the equipment

Second, the medium in the vacuum pump is seriously deteriorated due to the reaction substances in some process, so that the pump can not work normally
Our company has complete product models, which can be roughly divided into:
1
Double circular lobe type
Its design is very similar to the most popular and widely used roots pump
In fact, some of the earliest dry pump design ideas were to stack Roots pumps
This multi-stage design makes the gas path quite complex, and each stage requires a large flow of nitrogen to dilute and isolate
At the same time, in order to achieve a good vacuum, there are very strict requirements for the clearance at all levels
Of course, this design increases the internal compression ratio and makes its power consumption relatively low

2
Internal compression screw type
In addition to using a pair of non equidistant screws, the basic principle of internal compression screw design is very similar to that of external compression screw design
The continuous reduction of the volume between the screws makes the internal compression
This design reduces its power consumption to the same level as the multi-stage pump due to internal compression
However, in many processes, this internal compression, like multi-stage pumps, is very easy to cause the physical and chemical changes of gas in the pump body and produce solidification or liquefaction

3
Combined type (roots + claw)
The design uses roots to improve the extraction efficiency under lower pressure and claws to improve the extraction efficiency under higher pressure
Its basic principle and gas path are exactly the same as the circular lobe design introduced earlier
Some manufacturers also change the last stage to star design, so that the gas can be divided into five parts in a circle of rotation, just like the three circular lobe design can be divided into three parts
Similarly, in many processes, each stage of the combined design requires a large flow of nitrogen to dilute and isolate

4
Three leaf round lobe type
The principle of this dry vacuum pump design is exactly the same as that of the double circular lobe design, except that the gas is divided into three parts in one revolution, rather than two parts like the double circular lobe design
These two designs have the same advantages and disadvantages
In order to further reduce the power consumption, some manufacturers choose two DC motors in the transmission part, but this will also reduce the torque and the ability to restart
Like the double lobe design, each stage of the three lobe lobe design requires a large flow of nitrogen to dilute and isolate

5
External compression screw type
Use a pair of equally spaced screws
This minimizes internal compression and minimizes the shortest and simplest gas path
In this way, the gas stays in the dry vacuum pump for the shortest time
Although this design reduces the internal compression ratio and makes its power consumption relatively high, it shows high stability in many complex semiconductor processes
This single-stage design makes the requirement for nitrogen consumption very small and simple, which makes it have good interchangeability in different processes
Nitrogen can even be used in many clean processes

With the expansion of the application field of dry vacuum pump, the appropriate type can meet the application needs and play different roles
I hope you can choose your own satisfactory products
More information about dry vacuum pump, such as price and parameters, can be found on the website http://www
danruizk
com Continue to understand

Contact: Manager Wang
Hand Machine: 13355295566