Analysis of The Mistakes in the Maintenance of Rotary Vane Vacuum Pump
When
the vacuum pump is found to be out of order, some maintenance mistakes should
be avoided. The following vacuum supermarket small code for you to analyze the
maintenance of rotary vacuum pump errors.
1.
The tighter the moving ring seal is, the better:
In
fact, it is harmful and useless for the moving ring to be too tight. The first
is to increase the wear between the seal ring and the shaft sleeve, causing
premature leakage; the second is to increase the resistance of the axial
adjustment and movement of the dynamic ring, which can not be adjusted when the
working condition changes frequently; the third is that the tension spring is
too tired and easy to be damaged; the fourth is to make the dynamic ring seal
ring deformed, affecting the sealing effect.
2.
The new one is better than the old one:
In
contrast, the new mechanical seal is better than the old one, but the quality
of the new mechanical seal or the selection of raw materials is not right, the
cooperation scale error will affect the sealing effect; in the polymerization
and permeability medium, if the static ring is not excessively worn, it is
still better. Because the static ring is in the stop state for a long time in
the static ring seat, the polymer and impurities are deposited as a whole,
which has a good sealing effect.
3.
The overhaul is better than the failure:
In
fact, sometimes the seal is not damaged, and the leakage can be eliminated only
by adjusting the working condition or properly adjusting the seal. In this way,
we can not only prevent waste but also verify our fault judgment ability. The
experience of heap repair can improve the quality of maintenance.
4.
The tighter the static ring seal ring is, the better:
If
the static ring seal is in the stop state, the tighter sealing effect will be
better, but over tightening is also harmful. First, it causes excessive
deformation of the static ring seal, which affects the sealing effect of the
rotary vane vacuum pump; second, the static ring raw material is mostly
graphite, which is generally brittle, and the excessive stress is very easy to
cause fragmentation; third, it is difficult to disassemble the device, which is
very easy to damage the static ring.
5.
The tighter the impeller lock nut, the better:
In
the leakage of the mechanical seal of the rotary vane vacuum pump, the leakage
between the shaft sleeve and the shaft (the leakage between the shafts) is
quite common. In general, Cayman mechanical and electrical technology thinks
that the leakage between shafts is that the impeller lock nut is not locked
tightly, in fact, there are many factors that cause the leakage between shafts,
such as the failure and deviation of the inter shaft gasket, impurities in the
inter shaft, large shape and position errors in the cooperation between the
shaft and the shaft sleeve, damage of the contact surface, clearance between
the components on the shaft, and too long thread of the shaft head, etc., which
will lead to the leakage between shafts. Excessive locking of the lock nut will
only lead to premature failure of the inter shaft gasket. On the contrary,
proper locking of the lock nut will keep a certain tightening elasticity of the
inter shaft gasket. During the operation, the lock nut will actively lock the
lock nut so that the inter shaft gasket is always in an outstanding sealing
condition.
6.
The greater the spring compression, the better the sealing effect of the rotary
vane vacuum pump:
In
fact, too much compression of the spring can cause sharp wear of the friction
pair and instant burning; excessive compression makes the tension spring lose
the ability to adjust the end face of the moving ring, leading to seal failure.
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