When users choose a vacuum pump in the initial stage, they often do not have comprehensive application experience, or they just choose a simple vacuum pump according to the vacuum equipment manufacturer. In use, various problems will occur due to various reasons such as specific working conditions.

Unstable performance
Commonly, there will be inhalation of foreign objects, and inhalation of various process gases, liquids or dust debris, etc., which will cause the vacuum pump to stick, jam and other damage, which will seriously affect normal production.

High energy consumption. Because a single pump and a single machine need to take into account the amount of use, and there is often a certain distance between the vacuum pump and the main engine, the end user is not professional enough in the selection of pipelines and accessories, resulting in increased pressure loss and reduced pumping speed. The supporting manufacturers will appropriately increase the configuration of the vacuum pump, such as increasing the power of the motor, increasing the pumping speed of the vacuum pump and so on.

Noise and vibration
The noise and vibration of the vacuum pump are directly at the site of use, affecting the user's work.

Pollution and heat
When using oil-lubricated vacuum pump, due to improper maintenance, the vacuum pump will leak oil. The exhaust smoke is produced, which seriously affects the environment and the physical and mental health of users. There is also a lot of heat of compression, causing unnecessary air conditioning loads.

According to the actual working conditions, through reasonable optimization, the systematic transformation of vacuum will have many advantages.

When the use of user terminals increases, the solution of the central vacuum system can be further selected.

IVY, FIR, COM central vacuum system usually consists of several vacuum pumps, rotary vane vacuum pump, liquid ring vacuum system, Roots vacuum pump in series or parallel, PLC program control system, vacuum stabilized gas storage tank, vacuum pipeline, vacuum valve, air intake Filter and necessary exhaust gas treatment and other components.

The central vacuum system is used in the electronic semiconductor industry, wind power and solar energy industry, food packaging, rubber and plastics, intelligent machining, various pharmaceutical and chemical laboratories and other industries.

Central vacuum systems offer distinct advantages:
1. The noise of the operation workshop is significantly reduced.
2. The energy saving effect is obviously as high as 80-90%.
3. There is no workshop downtime.
4. Independent pump room operation to reduce the impact on workshop work.
5. Highly automated operation, requiring almost no manual intervention except for regular maintenance.
7. Equipment position adjustment, production capacity improvement, equipment expansion, convenient replacement and low cost.

The central vacuum system can realize the upper and lower limit value control of vacuum degree, which can be set freely, and can automatically and manually realize the rotation of the leading and auxiliary pumps.

It can realize variable frequency and constant pressure control. When the vacuum value is low, the vacuum pump runs at a low frequency, and when the demand increases, the vacuum pump runs at a high frequency, saving energy.

The central vacuum system has the functions of automatic protection, alarm and automatic switching.


Actual case 1:
A compressor parts processing equipment for vacuum fixtures. At the beginning, due to insufficient understanding of vacuum pumps, a two-stage rotary vane vacuum pump was selected by mistake. The intake pipe is too long and too thin. In addition, sometimes the workpiece is not fully positioned, causing the chip liquid to be sucked into the vacuum pump with the high-speed intake air flow. Therefore, the lubricating oil of the original vacuum pump is deteriorated, the pump body is corroded, and the bearing is damaged. The vacuum pump is badly damaged.

According to the on-site analysis, we first selected the Dovac SRV 028C single-stage compact direct-connect rotary vane vacuum pump with the same pumping capacity, which is equipped with an intake check valve and an exhaust filter. Due to the problem of cutting fluid entering, a transparent gas-liquid separator is installed at the inlet of the vacuum pump, and a vacuum tank and a vacuum separation tank are also added. In case the fixture leaks a large amount of cutting fluid into the vacuum tank, and it is separated in the separation tank, so that the gas entering the vacuum pump is clean. The size of the inlet of the vacuum pump and the pipeline between the separation tank and the vacuum tank are configured by the size of the inlet of the vacuum pump, which will not affect the pumping speed of the vacuum pump.

After the systematic transformation of vacuum, the problems that have plagued users for many years have been solved.