Vacuum pump in use for a period of
time will scale, these dirt will affect the normal use of vacuum pump, then, how
to prevent vacuum pump scaling?
1. Hardness of circulating cooling water
The operation process of circulating water in vacuum pump is very
similar to that of boiler water in low pressure hot water boiler. Therefore, to
manage the water quality of vacuum pump according to the water quality standard
of hot water boiler can not only prevent the scaling of vacuum pump, but also
prevent the corrosion of vacuum pump.
Most of the circulating water
systems of vacuum pump are open circulation systems with high return rate. In
the case of not using ion exchange equipment for water treatment due to capital
and other reasons, a softened water tank and a high water tank are generally
used to supply water to the vacuum pump.
2. Temperature control of
circulating cooling water
From the above analysis, it can be seen that
the difference between the water ring temperature in the vacuum pump and the
water temperature in the softened water tank is an important factor leading to
scaling. Therefore, increasing the circulating water supply and improving the
cooling effect is an important guarantee to minimize the scaling rate.
Therefore, in the process of circulating cooling water operation, it is
necessary to monitor the return water temperature and return water volume of
each pump to ensure that the normal water supply and return water temperature of
each pump do not exceed 40 ℃. The water supply can be controlled by valves. If
the return water temperature exceeds the requirements, it is necessary to
supplement low-temperature cold water or use other cooling methods to reduce the
temperature of the softened water in the softened water pool.
3. Wash
the pump body regularly
The pump body drain gate valve of the water ring
vacuum pump can not only discharge the accumulated water in the pump normally,
but also wash the dirt and water slag in the pump regularly by using the water
pressure of the pump body during the operation. On the one hand, it can prevent
the dirt from accumulating, on the other hand, it can prevent the water slag
from transforming into the scale.
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