The characteristic of mechanical seals is that they can be used for a variety of equipment, especially for equipment such as reactors and pumps, because such equipment has high sealing requirements and can not enter impurities, so it is used more. The problem of water leakage is really worrying. Water leakage causes poor sealing effect of the seal. This is a taboo thing for many people. Here are five tips to help you easily solve the leak problem of seals:
1. Reasons
1, the equipment is too tight. Check the dynamic ring plane of the mechanical seal, if there is a serious charring appearance, the plane is black and deep marks, the mechanical seal rubber with the pump becomes hard and loses elasticity, this appearance is caused by the equipment is too tight.
2. The equipment is too loose. Check the machine sealing, static ring plane, the surface has a thin layer of scale, can be wiped off, the surface is basically no wear, this is the spring to lose elasticity and equipment, or the motor axial movement composition.
3. Poor water quality. Due to the poor water quality of the packaged mechanical seals, rich in small particles and high content of hydrochloride in the medium, forming the surface of the abrasive wear machine seal grooves, ring grooves and other appearances.
4, water shortage operation constitutes dry grinding damage. This appearance is mostly seen in the negative pressure at the inlet of the bottom valve type equipment, there is air in the inlet pipe, there is air in the pump chamber, after the pump is started, the friction of the machine seal occurs at high temperature during high-speed operation, and it can not be cooled, check the machine seal, the spring tension is normal, the conflict surface is burnt and black, and the rubber becomes hard and cracked.
5. Cavitation. Cavitation mainly occurs in hot water pump. Because the medium is hot water, the water temperature is too high and the steam occurs, the steam body in the pipeline enters the upper part of the pump chamber, the steam body can not be cleaned, and then the water shortage operation is constituted, the machine seal dry grinding failure, the cavitation installation automatic exhaust valve, the switch.
Ii. Solution
1, disposal method: adjust the height of the equipment, after the impeller equipment, use a screwdriver to pull the spring, the spring has a strong tension, after loosening the reset, there is a 2 to 4 mm moving distance.
2, adjust the height of the mechanical seal, reset the spring.
3, improve the water pressure or medium, switch seal.
4. Exhaust the air in the channel and pump chamber and exchange the mechanical seal.
5. Avoid hot water if possible.
The leakage of mechanical seals is not a small matter, which can lead to failure, so we must find the reason in time when we encounter this problem. Don't throw it around. There is also the use of seals under the right conditions. And keep the water clean.