Rotary vane vacuum pump maintenance steps -

rotary vane vacuum pump after long time use, will be a drop in the vacuum, seal oil, vacuum pump rotating stall and even 'stuck', heavy oil, vacuum pump chamber rust, large rotating impeller sound, hard objects fall into ventricular scratch vacuum pump, vacuum pump, vacuum water pump overheating anomaly, etc.

at this point, it is necessary to remove and clean vacuum pump. 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, to avoid polluting the environment;

( 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 cover and remove the rotor of the high vacuum, rotating plate, springs, etc.

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

( 7) Clean thoroughly with gasoline to remove the metal parts, and use alcohol dehydration. Rubber parts can use 15% of the hydrogen fluoride solution boiling to remove oil. For the rust parts, burr or can use a sharpening stone or metallurgical sand paper burnish, gently to remove rust stain and burr. After cleaning the parts must be dry.

( 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 water pump room, installation of positioning pin, homogeneous symmetric to tighten the screws. After assembly, rotation should be flexible and evenly. Install rotor before and after the end cover, install the exhaust valve ( Exhaust valve should be closely connected with the valve seat) And other components, such as gas ballast devices, etc.

vacuum pump maintenance considerations, summarizes the vacuum pump maintenance knowledge:

( 1) Regularly check the oil level is low, and the dry oil tag line. If you have low dry oil mark, should be timely refueling. Apricot affect the vacuum degree of vacuum pump. Oil cannot too much, otherwise there will be a great start and injection difficulties and other issues.

( 2) Should pay attention to the normal operation of the vacuum pump, with and without any special noise, machine overload operation of 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 start at the back, in order to prevent the vacuum freeze and burst.

( 4) Vacuum pump must be kept clean by the belt. Vacuum pump shall not be placed on 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 pump can replace more than a barrel of oil per month. This is because in the process of using dry vacuum pump, vacuum pump oil are dust, moisture, or other dirt or contaminated by soap and carbide, it will influence the performance of the vacuum water pump. Therefore, it is necessary to oil change periodically according to the specific situation.

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