Rotary vane vacuum pump problem and solution analysis

with the progress of society and the rapid development of industry and agriculture and the improvement of people's life quality, the use of vacuum pump performance and the application range is put forward higher requirements. Rotary vane vacuum pump is a common vacuum pump products, mainly composed of stator and rotor, vane, fixed cover, spring and other parts, has been widely used in many industries. Rotary vane vacuum pump in use process will cause some trouble. Rotary vane vacuum pump manufacturer will analyse the problems and solutions rotary-vane vacuum pump.

a, rotary vane vacuum pump exhaust side of the oil atomization

can be used in the exhaust side oil mist separator, in order to prevent the volatile oil, protect the vacuum pump and avoid insufficient lubrication. The filter consists of a filter element, oil droplets will be held in the filter element and deposition in the filter body. Process permitting, oil will be isolated by float switch or gas ballast device by automatic oil return device returns to the vacuum pump for recycling. If in the drying process to remove a large amount of water vapor, or handle corrosive steam vacuum pump, to recycle the oil is not recommended. The steam condensation filter returns the vacuum pump, which will severely weakened the oil lubrication capacity and durability, which may lead to premature failure vacuum pump. In addition, because vacuum pump oil container and the condensation of steam in the concentration is high, so a significantly increased risk of stagnation of corrosion. In this case, the consumption of oil must often added.

two, working liquid in rotary vane vacuum pump, the working fluid ( The vacuum pump oil) Mainly performs three important functions: seal, lubrication and bearing, and compression and friction heat on the aluminum shell, so as to realize the cooling pump body. Keep all transmission and oil level of lubricating oil is oil seal of the rotary-vane vacuum pump and important preventive and routine maintenance. If the oil level drops too low, cannot to lubrication pump system. Due to lack of lubrication, the pump system will be blocked and ultimately resulting in failure of the pump. The oil level is too low will lead to can't achieve compression heat dissipation. overheating will lead to rapid aging of working fluid, and the lack of lubrication and oil and carbon will eventually lead to the formation of pump failure.

3, in the process of machining dust

in the process of gas processing, often can produce some particles or dust. In order to protect the damage of vacuum pump from mechanical damage and extend the service life of the working fluid, must be installed at the inlet of dust filter. According to the product, the application of dust filters filter components with different materials, such as paper, polyester fiber, carbon fiber or oil absorption packing ( Raschig ring) Made of the filter element. Consists of cyclone separator and filter element of two level combination can also be used for dust removal. Due to the rotation movement of the cyclone separator and cyclone separator can have the unique advantages of cooling heat molecules.

4, steam extraction

1. Most of the rotary-vane vacuum pump manufacturer detailing the steam resistance hPa or steam equipment capacity g/h. This information is refers to the water vapor. When the gas ballast valve opening in working temperature and vacuum pump, if the inlet pressure is lower than the given value, the pumping of water vapor will not be able to condense. In the process of drying, the size of the pump is not determined by the pump speed according to steam, but determined by the collection of water per unit time.

2。 So we must use the vacuum side of the closed valve and open the gas ballast valve will pump preheating, about 15 to 30 minutes to reach the best working temperature ( Oil) ( About 70 - 80°C) 。 Can only work at the right temperature by opening the gas ballast valve will be out of steam. Delay to open the high vacuum valve is easy to integrate into the control system. The table below shows the temperature dependence of the pump and the consequences of illegal operation. Special note: after the extraction process, it is strongly recommended that open the gas ballast valve, vacuum pump running about 15 minutes, in order to remain in the steam in the pump can through the exhaust system. This process make the working fluid, prevent corrosion of stall and possible water pump failure.

the above information is compiled by shenzhen rotary-vane vacuum pump manufacturers. Water ring vacuum pumps, rotary vane vacuum pump, screw vacuum pump, roots vacuum pump, vacuum system such as provided by the constant to the company.

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