In view of the problem of impurities blocking the water ring vacuum pump, the method that every block must be removed at the beginning of operation and the block can not be removed overnight is adopted. Although this avoids stoppage, the pump body is often disassembled, resulting in wear of the pump port ring and other components. So, in addition to these methods, in what ways can congestion be avoided?
1、 Ensure safe operation of key equipment
It is required that the catalyst should be injected in a certain proportion, and the injection stop time should not exceed 15rain. Otherwise, the viscosity of the melt will be reduced and the product quality will be reduced. In order to ensure the smooth operation of water ring vacuum pump, some assurance measures must be taken.
2、 Change lubricating oil and wear parts regularly
The main moving parts of the vacuum pump are worm, worm wheel, slide block, new piston, etc. The wear of these parts will directly lead to the reduction of pump flow or no amount at all. At present, the solution is to change lubricating oil, wear parts and clean the hydraulic cavity regularly.
3、 Strict operation procedures
The start and stop of water ring vacuum pump shall be operated in strict accordance with the use requirements. When starting, start the pump with zero output, and charge nitrogen to the pressure stabilizing plate when there is a certain pressure at the pump outlet. Avoid large deformation of diaphragm caused by nitrogen filling to prevent diaphragm rupture; increase the output of pump slowly; stop the pump slowly to reduce the output of pump.
4、 Strengthen pump maintenance
During operation, the water ring vacuum pump shall be inspected regularly, especially the lubricating oil level, pump sound, outlet pressure, nitrogen buffer tank pressure, etc. The diaphragm of the pump body and the diaphragm of the nitrogen buffer tank shall be replaced regularly to effectively prevent the catalyst stop injection accident caused by the damage of two pumps at the same time.
After the above measures are taken, the water ring vacuum pump can cut up the large solid mass, so as not to block it. It not only solves the blockage problem of vacuum pump better, but also avoids the repair problem caused by the blockage. It does not need to dismantle the pump body and saves a lot of manpower and material resources.
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