Rotary vane vacuum pump maintenance - how should do

rotary vane vacuum pump after use for a long time, will be a drop in the vacuum, seal oil, vacuum pump rotating stall and even 'binding', heavy oil, rust, rotary vane vacuum pump cavity sound big, hard objects fall into vacuum pump cavity cut abnormal phenomenon such as vacuum pump, vacuum pump cavity overheating.

at this point, the vacuum pump must be removed and cleaned. The method includes the following steps.

( 1) Cut off the power, from the vacuum system vacuum pump.

( 2) Emissions by gravity method and pressure method and collecting dirty oil, prevent environmental pollution.

( 3) Remove the belt and pulley key ( Double rotary vane vacuum pumps including belt) 。

( 4) After demolition, low vacuum side first, remove the end cover, and then dismantle and low vacuum rotor, rotary plate, spring, etc.

( 5) Remove the front end cover, take out the rotor of the high vacuum, rotary table, spring, etc.

( 6) Remove the lens, exhaust valve, exhaust cover, etc.

( 7) Thoroughly clean the removal of metal components by gas and alcohol dehydration. Rubber parts can boil with 15% sodium hydrogen fluoride solution to remove oil. For the rust parts, burr or can use a sharpening stone or metallographic sandpaper polished gently to remove rust stain and burr. Parts must be dry cleaned.

( 8) Assembly, the first level after installation, hold a spring and rotating plate mounted to the rotor, then install the front end cover to the vacuum pump room, installation of positioning pin, homogeneous symmetric to tighten the screws. After assembly, flexible rotation should be uniform. Install rotor before and after the end cover, install the exhaust valve ( Exhaust valve should be tightly attached to the seat) And other components, such as gas ballast device, etc.

rotary-vane vacuum pump maintenance considerations, vacuum water pump maintenance knowledge summary:

( 1) Regularly check whether the oil level is low and dry oil tag lines. If you have low dry oil mark, should be timely refueling. Apricot affect the vacuum degree of vacuum pump. Oil should not be too much, otherwise it will cause problems such as starting and injection difficulties.

( 2) Attention should be paid to the normal operation of the vacuum pump, the special noise, machine overload vacuum pump and motor temperature is too high.

( 3) Water pump should prevent the cooling water, vacuum pump temperature shall not exceed 70 degrees. If the environmental temperature 5 degrees low and dry, vacuum pump in the cooling water should be shut down the back, in order to prevent the vacuum freeze and burst.

( 4) Rotary vane vacuum pump must be kept clean by the belt. Vacuum pump shall not be placed on any other objects.

( 5) Note the belt tightness. If necessary, adjustment or replacement.

( 6) Vacuum pump oil should be replaced periodically 1 ~ 3 times a year. Used in vacuum smelting mechanical vacuum water pump can change more than a barrel of oil per month. This is because in the process of using dry vacuum pump, vacuum pump oil will be dust, moisture, or other dirt or contaminated by soap and carbide, it will impact on the performance of rotary vane vacuum pump. Therefore, it is necessary to oil change periodically according to the specific situation.

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