Shanghai Hongguan Instrument teaches you how to disassemble and overhaul the vacuum pump

The disassembly and repair of vacuum pumps is called overhaul, and for some vacuum pumps that have been partially dismantled and repaired but failed to eliminate the failure, their vacuum level is still very low and there are still leaks; Or some pumps have one of the following phenomena: if the pump "stuck" phenomenon, it indicates that the oil is dirty, and the pump has scaled, rusted or improperly used oil will form a hard shell on the internal parts of the mechanical pump (silicone oil entering the mechanical pump may cause this situation), the rotating blade emits a large impact sound, foreign matter (metal chips, glass chips, copper chips, etc.
) fall into the pump cavity to scratch the pump cavity, and the friction heat and temperature rise are very serious (more than 70 ° C), etc.
, need to be removed
.
The mechanical pump has been disassembled for cleaning and repair
.
Below, the vacuum pump manufacturer will teach you how to carry out the disassembly overhaul of the pump, and the disassembly steps and precautions are mainly as follows: 1.
Cut off the power supply and unplug the power supply
.
If the pump is on the system, it should be removed from the
equipment.
2.
Loosen the oil bolt to drain the oil, and rotate the pulley by hand to release all the remaining oil
in the pump chamber.
Oil should be collected, usually a piece of iron oil
is placed under the bottom of a mechanical pump.
Collect discs or discs for future distillation and recovery and avoid environmental contamination
.
3.
The motor should be repaired or the belt should be removed according to the level of the motor, the pulley should be removed, the key should be removed and the bottom plate
removed.
The electrician should clean the oil for repairs
.
4, first remove the vacuum low-end cover, in the removal, please use different tools
according to different screws.
For general hex screws, use a flat-tipped wrench, for internal hex screws, use an internal hex wrench, and if necessary, a socket wrench to avoid damaging the screws
.
If the end cap is securely installed, try opening
it slowly.
5.
If sealed with a rubber gasket, remove the rubber gasket and exit the locating pin
.
6.
Remove the rotor and rotor blades
.
Squeeze the rotating blade
by hand.
Since the rotating blade withstands greater elasticity, it can easily fly out
if it falls to the ground or hits a hard object.
Doing so can damage the corners and surfaces of the rotary vane and lead to unnecessary reporting
.
7.
Disassemble the high vacuum end and remove the high rotor and rotating blade.

At this point, simply use the rotor can be removed by pinching the rotor
and shaft.
8.
Before manually disassembling the pump, it is necessary to understand in advance the structural characteristics of the pump to be dismantled and what type of structure
the parts and components belong to.
For example, do not disassemble parts belonging to this component, such as the rotor of some rotary vane pumps, and make appropriate corrections and adjustments on the surface; If glass shards or metal contaminants fall into the combined rotor and damage the cavity, or if the rotating vane groove itself is too worn, it can be disassembled when it needs to be repaired and replaced, but it is important to remember its assembly method
.
9, vacuum pump manufacturers introduced, every time the parts are removed, it must be checked for sex, smoothness and damage
.
Pay special attention to the edges and corners of the rotating blades and the ends of the rotor to check for damage and to make a record
.
For those who are not familiar with the pump repair business, they should gradually remember the original assembly location of each component and part and make a record to prevent being misidentified
during reinstallation.
At the same time, the dismantled parts must not be misplaced, accumulated, scraped or lost
.
Place it in a square disk, or you can put it in a wooden box and wash it, and cover it with a silk cloth
.