Suction truck vacuum pump common faults and maintenance methods

Suction truck is a commonly used tool vehicle in daily sanitation. It is mainly used for cleaning urban sewers and septic tanks to ensure smooth drainage and drainage systems in urban areas. The vacuum pump is the main component of the suction truck, and it is also the core component that the suction truck can clean the accumulated dirt in the sewage pipe network. Suction pump vacuum pumps often fail during work. What are the common conditions? What should I do?

吸粪车真空泵常见故障及维修方法.jpg

First of all, we need to understand the working principle of suction truck vacuum pump. The power of general vacuum pump comes from the engine of the suction truck. The power is transmitted to the vacuum pump through gearbox, power take-off and transmission shaft. When the suction is done, the vacuum pump sucks the air from the sealed storage tank of the suction truck to form a vacuum pressure, and then uses the outside atmospheric pressure to suck the dirt into the storage tank. When the sewage is drained, the vacuum pump draws the outside atmosphere into the storage tank, using the pressure of the air. Drain the dirt.

The common suction truck vacuum pump can generally operate different ventilation valves manually to achieve suction and discharge freely, but because the vacuum pump has strong intensity for each operation, it is prone to malfunction if used and operated improperly. Common faults and maintenance methods are as follows:

First, the lack of oil in the vacuum pump oil separator, the machine is not working smoothly, easy to jam, then need to add enough oil.

Second, high speed is easy to cause bearing damage, need to reduce the speed, and check the bearing, if the damage is serious, you need to replace the bearing.

Third, the vacuum pump working time is too long, will affect the service life, the best continuous working time is preferably not more than 8 hours. In addition, the four-way valve should be opened to drain and clean after continuous operation.

Fourth, vacuum gauge failure, can not reflect the true data, the need to dismantle the vacuum gauge, check the lines and components.

5. The exhaust gas is not clean and the suction force is reduced. Gas leakage may occur due to wear or damage of the four-way valve sealing strip. Further inspection or replacement of the sealing strip is required.

6. The steering of the vacuum pump is not installed correctly and cannot work normally. For example, when the exhaust is not vented, check whether the components are installed accurately. The removable vacuum pump can be installed again.

VII. The working time is long. The machine is naturally worn and causes failure. The worn parts should be replaced.

The above is about the common faults of the suction truck vacuum pump and the solutions. It is necessary to remind the owners that after the suction truck is finished working, it is best to be able to carry out a detailed inspection of its vacuum pump. According to different work intensity and working time, it should be regularly Vacuum pump maintenance to extend machine life and improve work efficiency.


iron melting furnace usually can smelt to 1550C for melting and pouring, a stable performance furnace is quite key in your furnace efficiency. Rongke furnace specialized in design and manufacturing medium frequency Induction Furnace since 2013, now we have over 300 sets of smelting system running around the world and yearly revenue over 100 million CNY, every year our sales are expanding at least 1.5 times over last year and factory area too is enlarging every two years. now the factory is covering over 15000 sqm. Among the 110 employees we have 20 R&D engineers. 

Copper melting furnace

Copper Melting Furnace

FOSHAN RONGKE INDUSTRIAL ELECTRIC FURNACE CO.,LTD , https://www.rongke-industrial.com