Everyone knows that the sewage suction truck is a new type of environmental sanitation vehicle that collects, transfers, cleans and transports sludge and sewage to avoid secondary pollution. It can self suction and discharge, and has a fast working speed and large capacity. Relatively speaking, it is more suitable for collecting and transporting feces, mud, crude oil and other liquid substances due to its convenient transportation.

 The entire sewage suction truck mainly relies on suction to carry out sewage suction operations, but sometimes there may be some situations where the suction is small, which is quite troublesome for many users. So what are the reasons for these?

 Let's answer together with everyone now.

 It uses a vacuum pump to exhaust the air inside the tank to form a vacuum, thereby creating negative pressure and using the pressure of the air to generate suction.

If the suction pipe or suction pipe of these vehicles leaks, as well as if there is a leak in the vacuum exhaust pipe, they will not be able to reach a vacuum state, and will not be able to generate sufficient suction, resulting in insufficient suction. In addition, the vacuum pump of these vehicles is worn, and there are generally two types of wear on the vacuum pump, one is the wear of the shell and the wear of the scraper. Over time, the vacuum pump will slowly wear out. If the shell is severely worn, the entire inner wall of the shell is not smooth, and there are grooves, then maintenance will not be effective, and only replacement can be carried out. The wear of the scraper is also quite common. After the pipe is worn, it cannot be tightly attached to the inner wall of the suction pump to form a vacuum. In this way, it is necessary to replace the scraper in a timely manner.

Another issue is that the gates of these sewage suction trucks' pipelines are not closed or opened enough, and there is even a possibility that the suction pipes are blocked. At this time, even if the vacuum pump generates sufficient suction, the suction will be blocked inside the gates or pipelines, preventing the sewage from smoothly entering these suction tanks, creating the illusion of low suction.

 Another aspect is that his exhaust pipe is not unobstructed, because the gas that is usually discharged from the tank, flows from the anti overflow valve exhaust pipe to the water vapor separator, and then enters the vacuum pump along the pipeline from the water vapor separator. The gas that needs to be discharged is forcibly squeezed out in the vacuum pump, and after passing through these separators, it is discharged outside the vehicle.

 If these parts are blocked, it will also cause poor exhaust, resulting in insufficient suction.