Problems with the mechanical seal of water jet vacuum pumps
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The vacuum pumps used in the factory are generally of the water-jet type; this is mainly because they are used to extract acidic gases, and alkaline water is used as the liquid in such pumps. However, the pump seals keep breaking down and need to be replaced every about 3 months, which is a real problem. Is it due to the poor quality of maintenance by our local technicians, or is it related to the medium used, or perhaps are there inherent defects in these pumps themselves? Repairing it isn’t done by just one technician; almost everyone who tries to fix it finds that it doesn’t last long. If I need to replace it, could everyone recommend a pump with low maintenance needs? Thank you
I must be wrong; water jet pumps don’t have mechanical seals – it’s water ring pumps, right?
Check the startup process. Check the equipment’s user manual to verify whether the mechanical seal can withstand the medium.
A water jet pump relies on the kinetic energy of water to create low pressure through expansion, and it has no mechanical seal
Can a screw vacuum pump be used? The features are as follows: 1. There is no oil in the pump chamber, which prevents contamination of the vacuum system and improves product quality. There is no oil in the 2 pump chambers, which eliminates the problems of oil emulsification, frequent replacement of working fluid, as well as frequent maintenance, thus saving the use of finished products. 3. Dry operation: it generates no waste oil or fumes, nor any wastewater, which is beneficial for environmental protection and helps conserve petroleum resources and water supplies. 4 It features a high ultimate vacuum; when used in series with rotary vane pumps and molecular pumps, it can form an oil-free system. 5 is a gas capable of removing large amounts of water vapor and a small amount of dust. 6 can remove various corrosive media, and is particularly suitable for product distillation, drying, degassing, etc. in the chemical and pharmaceutical industries. 7 The pumped gas is directly discharged outside the pump, free from water and oil contamination, making gas solvent recovery more convenient. 8 It is easy to clean; if dirt gets into the pump chamber and cleaning is required, one only needs to open the suction and discharge ports of the pump. After starting the pump, adding an appropriate amount of water or cleaner through the suction port will suffice to clean the pump, without the need to disassemble the entire pump. 9. I type a lot, do you believe me? ;P
It is the feed water pump for the water spray pipe; the mechanical seal is damaged. Regular inspection and tightening should help improve the situation.
Is the shaft seal packed, or is it a mechanical seal?
Tighten frequently? Filling? ? It’s okay if some water leaks, right? .
Who says water jet systems don’t have mechanical seals? The seal in a water jet system is located on the pump head of the centrifugal pump. If it breaks frequently, it might be worth trying a pump head from another manufacturer; if funding permits, a screw vacuum pump is also a good option
Centrifugal pump WAP-2A: Reasons for seal failure. :) The stationary ring is not securely fixed, or there are solvents in the vacuum; high temperatures (with water shortage being the most common cause) can easily lead to deformation of the stationary ring chamber, resulting in damage