What are the causes of leaking flanges in wastewater treatment pumps?

1. If the flange screw is not tightened, the screw will be loose, and the screw needs to be tightened.

2. Water leakage caused by cracking or deformation of the flange. At this time, the flange will have cracks or uneven flanges, and it is necessary to loosen the screws to adjust the gap or replace the self-priming barrel and the main body.

3. The flange gasket is aging or corroded and causes water leakage, at this time, the flange gasket has no elasticity, becomes smaller or has cracks, and the nature of the liquid does not meet the pump, and the flange gasket needs to be replaced.

4. If the flange is deformed and there is a crack or uneven flange, replace the self-priming barrel or the main body.

Flange leakage is the failure of the flange seal, and there are many specific reasons:

First, the flange gasket is aging and cracking, long-term pressure, medium corrosion, and temperature accelerated aging are all possible to make the flange gasket age;

Second, the flange sealing surface is damaged, the medium is corroded, and the mechanical damage may damage the flange sealing surface;

Third, the tightness of the flange bolt is loose, the bolt thread is corroded and damaged, and the mechanical vibration and other reasons can make the bolt loose.

1.The gasket between the flange and the flange is aged and damaged, and the gasket must be replaced.

2.The fastening screw of the butt flange is loose, and the original torque cannot be reached, so that the mat is not flattened and leaks, at this time, only need to tighten the screw.

Flange leakage, the main considerations, first, welding technical problems, then corrosion after a long time, third, but also consider the mat damage.

Answer: The reason for the water leakage is that the flange end face is corroded, uneven, the two end faces are not parallel, not concentric, the middle gasket is aging, the connecting screw is not uniform, and the mouth is not closed.

The reasons for the leakage of the flange of the wastewater treatment pump are: the material of the flange, the service life, the quality of the installation, and whether the medium of the wastewater and the material of the flange match these will cause water leakage.

1. Leakage of flange interface.

Reason: It is basically caused by serious pulling of the fastening screws.

Solution: Do not tighten the diagonal screws at one time, and the gasket sealed between the two flanges should be of the same size as the flange.

Since it is your acid and alkali corrosion-resistant sewage treatment rod, if the flange leaks, it should be his sealing ring is broken, and the sealing ring often plays a sealing role here, since he has broken down, of course, it will not play the role of sealing, so it will lead to water leakage there.

Hello Acid and alkali corrosion resistant sewage treatment pump flange leakage should be from the two situations of unused and in use of the unused corrosion-resistant self-priming pump:

1. Reason: the screws are not tightened; Solution: Tighten the screws;

2. Cause: flange cracking or deformation; Solution: There is a crack in the flange or the flange is uneven - loosen the screw to adjust the gap or replace the self-priming barrel or the main body;

Corrosion-resistant self-priming pump in use:

1. Reason: aging or corrosion of flange gasket; Solution: The gasket has no elasticity and cracks, and the nature of the liquid does not match the pump, so the flange gasket needs to be replaced;

2. Cause: flange cracking; Solution: If there is a crack in the flange, replace the self-priming barrel or the main body;

3. Reason: loose screws; Solution: Tighten the screws;

4. Reason: flange deformation; Solution: If there is a crack or uneven flange, replace the self-priming barrel or the main body;

1. The shaft seal is burned. It is necessary to replace the shaft seal with a new one, and inspect the pipe to find out the cause of the burnout.

2. The rear shaft seal is damaged and the fixing ring is broken; Or the front shaft seal rotating ring is ruptured, and the telescopic ring is ruptured. The condition of the spike stool should be seen to see if there are any hard or sharp impurities in it, and the cracked part should be replaced.

3. The impeller lock cap is not locked or sealed well. The impeller lock cap and sealing ring need to be replaced and locked.

The self-priming pump has been used for too long, and the flange gasket has aged or been corroded by the chemical solution, resulting in the gasket being elastic and cracked, and the flange gasket needs to be replaced.

The flange itself is cracked, damaged and leaking, and needs to be replaced with a self-priming barrel or body.

The fastening screws are not installed firmly, and the screws are loose, in this case, just tighten the screws.

If it has not been put into use, the flange of the corrosion-resistant self-priming pump will leak, and it is possible that the flange is cracked or uneven, and it is necessary to loosen the screws to adjust the gap or replace the self-priming barrel or main body.

Exterior treatment: Seal around the drain pipe.

If the water can't get in, it won't seep out.

2. Inside**: Fill the perimeter of the drainage pipe with a flexible waterproof agent, or you can use gypsum water to fill it - the material is cheap and easy to obtain; Beat the area with polyurethane styrofoam or sealant, and finally use water-resistant putty at the treatment site.

Or the cement slurry is treated, and then the sanitary ware is pressed, and the sealant is applied around it. fastening; If that doesn't work, remove it and replace the gasket.

re-tightening; If it is not allowed to be disassembled, it can only be plugged, make a fixture, a fixture that can wrap the flange, inject glue into the inside, and solve it after curing. It should be determined according to the size of the pipe diameter, the type of pipe, and the laying method. In general, there are three options:

1. Flat mouth pipe is the earliest interface form of cement pipe, which is difficult to manufacture, high production efficiency and manufacturing cost.

Lower; The interface sealing adopts steel wire mesh concrete trowel belt belongs to the rigid connection, but its sealing effect and seismic performance are poor, if the foundation displacement will make the interface open, so that the sewage will pollute the underground soil, and it has been a great inconvenience to the society and the environment, so this interface mode is less and less practical.

2. Socket interface The socket interface form is sealed with rubber ring to stop water, which is a flexible connection, the interface insertion depth is 80-100mm, the interface is relative to the corner, the cement pipe of this interface has good seismic performance, and the pipe base is made of sand and gravel.

foundation or concrete foundation, fast installation. However, the large-diameter cement pipe should not use the socket interface, because the large-mouth cement pipe has circumferential cracks.