How to solve the vibration of Roots vacuum pump during operation?

Let's talk briefly about how to solve the vibration of Roots vacuum pump during operation

Application of Roots vacuum pump in vacuum precooling device

At present, most of the vacuum pumps used in the vacuum precooling device are rotary vane vacuum pumps. Although the rotary vane pump with gas ballast can extract the mixed gas containing a small amount of water vapor and a large amount of gas, during the vacuum precooling process, due to the evaporation of the moisture inside the vegetables, a large amount of water vapor will be pumped into the rotary vane pump, and the water vapor will condense in the pump chamber.

This will lead to emulsification and deterioration of the lubricating oil of the vacuum pump, seriously affect the limit pressure that the vacuum pump can reach, reduce the lubrication performance, increase wear, make it unable to work normally, and even seriously corrode the pump body, rotor and other parts, leading to the scrapping of the whole machine. Therefore, it is recommended to use Roots vacuum pump in the vacuum precooling device.

Postharvest precooling is an effective method to keep vegetables fresh and delay their aging. Four methods can be used for different vegetables, including cold air precooling, differential pressure precooling, vacuum precooling and water precooling.

Roots vacuum pump vacuum cooling has been widely used in the food industry. Compared with the traditional air blast and immersion cooling methods, vacuum precooling can greatly shorten the cooling time and make the temperature field in food more uniform. Obviously, from the perspective of freshness preservation, vacuum precooling device is the ideal vegetable cooling and refrigeration equipment at present.

How to solve the vibration of Roots vacuum pump during operation?

When using Roots vacuum pump, the machine body will vibrate, and slight vibration will not have any adverse effect on the machine, but if the vibration frequency is too high, the machine will be damaged.

With the requirements of vacuum technology and the improvement of vacuum pump quality, the current three blade roots vacuum pump is improved on the basis of the past. It is our characteristic to stabilize the body and vacuum degree. However, many traditional roots vacuum pumps still have problems such as vibration and unstable vacuum degree in the use process.

Therefore, today we will mainly analyze the damping method of Roots vacuum pump, hoping to help you.

1. Strengthen the rigidity of the pipeline

Considering that Roots vacuum pump is difficult to strengthen, the method of welding "ribs" on the outlet steel pipe is adopted. Eight 32mm thick and 100mm wide steel plates are used to weld the flanges at both ends of the steel pipe between the expansion pipe at the outlet of the vacuum pump and the outlet valve along the water inlet and outlet direction, so as to improve the rigidity of the steel pipe, reduce deformation and resist displacement. According to the measurement, after stiffening, The displacement of point A of roots vacuum pump drops to 0.35.

2. Reform the transmission system

In order to reduce the vibration of the motor and transmission shaft to the vacuum pump, the rigid connection between the transmission shaft and the transmission shaft is changed to the elastic connection. GB4323-84 elastic sleeve pin coupling is used, which has a large compensation displacement of 0.6 mm and a compensation angle of 130, so that the vibration of the motor and transmission shaft can be compensated by the elastic coupling and will not be directly transmitted to the vacuum pump.

Well, that's all for the small editor. If you need Roots vacuum pump, you can contact our company.