Causes of belt deviation of belt filter press.

In the long-term operation of the belt filter press, there are always failures, especially the high frequency of belt deviation. The deviation of the filter belt will not only affect the mud effect, but also easily damage the filter belt and related control elements, which will bring great economic losses to the production enterprises.

So, when the filter belt deviates in the production process, how should we solve it? Next, Longzhong will make a detailed analysis on the causes and solutions of belt deviation.

1. The operation of the deviation correcting roller is not sensitive, which causes the filter belt to run to one side. At this time, if the limit switch fails, one end of the filter belt touches the frame of the dehydrator, it will be damaged due to rollover.

Solution: if the correction slider is rusted and jammed, it needs to be derusted and lubricated; if the correction valve fails or the correction angle is not adjusted properly, it needs to be repaired; if there is damage to the air pipe or air bag, it should be replaced in time.

2. When the sludge is not evenly distributed in the pre dehydration filter belt, the sludge enters the pressing section, and the sludge cake on the filter belt is thick and thin on one side, and the filter belt will shift to the thick side. The direction of migration force and correction force contradict each other, and the filter belt will break at the boundary of thick and thin mud layer.

Solution: at this time, check the sludge distribution of the filter screen. If the partial load is serious, it is necessary to clean the sludge inlet distribution facilities and adjust the position of the flat mud plate. If the mud rake is partially worn or not placed, it is necessary to check and repair the mud rake and replace the mud scraper in time.

3. In the process of using the filter belt, the tear, deformation and fold of the filter belt caused by wear will cause the different friction between the filter belt and the roller on the left and right, which will lead to the deviation of the filter belt, especially the damage of the edge of the filter belt and the tear of the edge at the joint of the filter belt.

Solution: during the daily routine inspection of the equipment, pay more attention to the wear condition of the filter belt, and replace it in time once it is found that the wear is serious or there are tears and wrinkles.

4. The position of the press roll or the tension roll of the belt press is unbalanced, and the spacing between the rolls at both ends of the filter belt changes, which will cause the uneven stress on both sides of the filter belt, and the filter belt will deviate from the end with large stress to the end with small stress.

Solution: check whether the roller installation is balanced, which is easy to occur after the overhaul of the press; maintain the bearing and roller, and repair in time if there is wear.

5. In the operation of belt filter press, a large amount of water vapor will be produced and enter the air. The air containing a large amount of water vapor will enter the air compressor. Some of the water vapor will condense into water and accumulate in the air tank of the air compressor, and the rest will exist in the whole air system in the form of saturated water vapor. When the water in the air tank of air compressor and the pneumatic triplet of belt filter press is not discharged in time, a series of water will be caused The air holes of the pneumatic components are blocked and corroded, which leads to the failure of the deviation rectification valve.

Solution: check whether the air storage tank of air compressor automatically drains water after each equipment operation, and manually drain the water in the pneumatic triplet of belt filter press. In addition, check and repair the air circuit and pneumatic components frequently and replace them in time, so as to ensure the normal operation of the system.

6. The difference of the error and friction force in the process of manufacturing, installing and adjusting the cylinder of the upper and lower filter belt tensioning device will cause the difference of the left and right forces on the filter belt, which is also one of the main reasons for the deviation of the filter belt.

Solution: when starting the belt filter press, first drain the water in the filter, control the equal length of the pipeline and micro adjust the air pressure of the flow valve to achieve the balance of the tension.

       The above is the causes and solutions of belt deviation summarized by Doyen China. There are many factors affecting belt deviation of belt filter press, including the structural design of equipment and subsequent operation. Therefore, when purchasing belt filter press equipment, choose a manufacturer with reliable quality and guaranteed after-sales service, so as to avoid accidents in subsequent use to a greater extent for customers.