What should be paid attention to when overhauling mechanical seals

In order to ensure the good use of the mechanical seal, regular maintenance is essential, so how to prevent the mechanical seal from being damaged? In general, the following aspects should be paid attention to when overhauling the machine seal.

The mechanical seal is an important seal in the water pump. It is installed at the connection point between the motor and the pump body to ensure that the medium does not leak out during the operation of the pump. The mechanical seal is also a vulnerable part of the water pump. The use efficiency will cause more damage to the pump for a long time. Therefore, in the daily use of water pumps, the mechanical seal must also be properly maintained in order to make it have a better sealing effect and a long service life.

1. Leakage due to loose parts should be avoided, and attention should be paid to the heating phenomenon caused by impurities entering the end face and whether there are abnormal noises during operation. For pumps in continuous operation, attention should be paid not only to prevent dry friction when driving, but also to prevent dry friction during operation. Do not allow the pump to evacuate, if necessary set an automatic device to prevent the pump from evacuating. For pumps that operate intermittently, attention should be paid to observe the crystals formed by the drying of the material after the pump is stopped, or the crystals precipitated by cooling. When the pump is started, heating or flushing measures should be taken to prevent the crystals from scratching the end surface and affecting the sealing effect.

2. Whether the circulation protection system such as flushing and cooling and the instrument are working normally and stably. Pay attention to poor cooling due to sudden water cutoff, resulting in seal failure, or accidents due to blockage of cooling pipes, flushing pipes, and pressure equalizing pipes.

3. Factors such as vibration and heat generation of the centrifugal pump itself will also affect the sealing performance, so regular observation is required. When the bearing is partially damaged, it will also affect the sealing performance, so pay attention to whether the bearing is hot and whether the sound is abnormal during operation, so that it can be repaired in time.

In short, in the use of mechanical seals, regular maintenance of equipment can ensure the efficiency of the equipment while reducing the probability of damage and decline in efficiency, thereby effectively extending its service life.