Suction truck maintenance knowledge and precautions

Suction truck maintenance knowledge and precautions

Before the suction truck is installed, the suitable rack, angle iron and clamp are used to install the pump under the car beam. The position of the pump is determined by the level of the shaft of the power take-off output shaft and is not determined by the components of the car beam. In the case of interference, try to get close to the power take-off and the beam. The connection inclination between the pump shaft and the power take-off output shaft must not exceed 7 degrees.
Suction pipe system piping is strictly prohibited from leaking, otherwise it will affect the degree of vacuum. The exhaust pipe should also be free from leakage so as to avoid vacuum oil discharge, pollute the environment and waste energy.
Since this pump is an oil seal pump, it is necessary to maintain sufficient number N32 mechanical oil during normal rotation, and in the winter cold season in northeastern and northwestern areas, 32# refrigeration oil should be used. The oil will act as a seal gap and lubrication, but the oil in the pump will also be affected. When the exhaust gas is taken out of the pump, a primary and secondary oil-gas separator must be installed on the outside of the exhaust port to fully separate the oil and gas. The oil is recovered and then used by the pump, and the gas is discharged into the atmosphere so that the pump can run smoothly without pollution. , And energy saving.
Tips for suction trucks The suction pump vacuum pump must first understand its working principle. The more important work principle is the consideration of the source of power and stability. The vacuum pump power comes from the chassis engine. The engine is transmitted to the vacuum pump via gearboxes, power take-offs and driveshafts. During the suction operation, the vacuum pump extracts the air in the sealed tank to form a negative pressure. The atmospheric pressure outside the tank is used to press the dirt into the tank through the suction pipe. When the sewage is drained, the vacuum pump will put atmospheric pressure outside the tank into the tank and use the air pressure to discharge the dirt out of the tank (the vacuum pump's continuous working time generally does not exceed 30 minutes).
The flow sequence of the air flow in the air path is as follows: When the air is sucked, the vacuum pump sucks the air with a certain humidity in the tank into the water and gas separator, where the water is separated and flows back into the tank. The gas enters the vacuum pump along the pipeline through the four-way valve. Air intake. The pump is mixed with the lubricating oil and is discharged from the exhaust port through the compression chamber. In particular, the mixture is initially separated by the primary filter, and the separated oil flows back to the oil pump. The mixture is further separated by an oil separator and then discharged into the atmosphere through a four-way valve. Manual operation of the four-way valve can change the direction of the air flow, sucking and discharging freely.
When the vacuum pump of the suction truck is completed, it is necessary to formulate a corresponding inspection of the suction truck according to the different working intensity of each time, so as to ensure the working life of the suction truck and the second working efficiency.

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