What are the anti-overflow devices on the sewage suction truck?
Time:2019-08-02
Views:3589
There are three types of spill prevention devices on the suction truck:
1. Sewage observation tube, this is the most common type of anti-overflow device. By observing the sewage pipe, you can know the location of the sewage in the suction tank. Once the warning line is reached, stop the suction operation and prevent flooding. The anti-overflow method requires the operator to observe at any time, otherwise it will easily lead to flood irrigation. If the light at the job site is not good, or it is nighttime operation, the position of the sewage in the tank cannot be known by observing the sewage pipe. This device is not very good, if If the sewage pipe is polluted by sewage, it must be cleaned. Otherwise, the water level will not be seen and it will not function properly.
2. Ordinary anti-overflow valve, anti-overflow valve has a very light steel float. When the sewage in the suction tank of the suction truck reaches the predetermined position, the floating ball in the anti-overflow valve rises, blocks the vent hole, prevents the sewage from entering the exhaust pipe, and enters the vacuum pump, but the suction of the suction truck is very large. The ordinary anti-overflow valve can not completely prevent overflow, or there will be sewage into the trachea and vacuum pump, and if there are a lot of floating objects in the tank, it is difficult to lift the floating ball of the anti-overflow valve. Not what it should be. If a better anti-overflow valve is possible.
3. Water gas separator. In the suction truck, the water gas separator can play two roles. One is to separate the moisture contained in the gas entering the vacuum pump, and the other function is equivalent to an anti-overflow valve, the overflow prevention principle of the water gas separator and The principle of the anti-overflow valve is the same. There is also a float ball in the water-gas separator. When the sewage in the water-gas separator accumulates to a certain amount, the float ball rises and blocks the gas port to prevent the sewage from entering the vacuum pump.
1. Sewage observation tube, this is the most common type of anti-overflow device. By observing the sewage pipe, you can know the location of the sewage in the suction tank. Once the warning line is reached, stop the suction operation and prevent flooding. The anti-overflow method requires the operator to observe at any time, otherwise it will easily lead to flood irrigation. If the light at the job site is not good, or it is nighttime operation, the position of the sewage in the tank cannot be known by observing the sewage pipe. This device is not very good, if If the sewage pipe is polluted by sewage, it must be cleaned. Otherwise, the water level will not be seen and it will not function properly.
2. Ordinary anti-overflow valve, anti-overflow valve has a very light steel float. When the sewage in the suction tank of the suction truck reaches the predetermined position, the floating ball in the anti-overflow valve rises, blocks the vent hole, prevents the sewage from entering the exhaust pipe, and enters the vacuum pump, but the suction of the suction truck is very large. The ordinary anti-overflow valve can not completely prevent overflow, or there will be sewage into the trachea and vacuum pump, and if there are a lot of floating objects in the tank, it is difficult to lift the floating ball of the anti-overflow valve. Not what it should be. If a better anti-overflow valve is possible.
3. Water gas separator. In the suction truck, the water gas separator can play two roles. One is to separate the moisture contained in the gas entering the vacuum pump, and the other function is equivalent to an anti-overflow valve, the overflow prevention principle of the water gas separator and The principle of the anti-overflow valve is the same. There is also a float ball in the water-gas separator. When the sewage in the water-gas separator accumulates to a certain amount, the float ball rises and blocks the gas port to prevent the sewage from entering the vacuum pump.
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