The filterless filter is a cylindrical external filter vacuum filter, and the cylinder body is a whole vacuum chamber, and the cylinder body has a special sealing chamber in the discharge area. The machine eliminates the distribution head, throat and a large number of vacuum lines of the general filter, and is a new type of continuous filter. It is mainly composed of a cylinder, a sealing cover, a hollow shaft, a stirrer, a slurry tank and the like. The division of its structural work area is shown in the figure below. When the filter is in working condition, the barrel is in a vacuum state, so that the filter cake is adsorbed on the surface of the filter cloth, and the filtrate and the washing water are respectively extracted from the two ends of the hollow shaft, and the filter cake runs with the filter cloth. The discharge roller is detached. The machine does not need to blow the material and clean the filter cloth on the cylinder. Therefore, the function of the sealing device is to seal the filter hole on a section of the cylinder exposed from the air (between the point where the filter cloth is taken out to the return point of the filter cloth) to prevent the vacuum from being broken.
In the figure, the working principle diagram of GDU type gridless belt filter
1, cylinder; 2, sealing device; 3, filter cloth; 4, guide roller; 5, split roll; 6, cleaning water pipe; 7, discharge roller;
8, tension roller; 9, hollow shaft; 10, agitator; 11, tank; 12, washing water pipe; 13, herringbone roller;
I, filtration zone; II, dehydration zone; III, washing zone; IV, dead zone
Another feature of the filter structure is that the feed tank adopts a deep groove structure to increase the suction filtration time to increase the production capacity. At the same speed, the suction filtration time of the GDU-40 type non-folding belt filter is increased by 1/3-2/3 compared with the general external filter type vacuum filter.
The technical specifications and performance of the GDU type gridless belt filter are listed in the table below.
In the table, the specification and technical performance of the vacuum filter
