SU285687A1 - FILTER PRESS - Google Patents

Description

The invention relates to an automatic filter-nress with vertically arranged filter plates one after the other, which, when moved and compressed, create filter chambers. Filter iress can be widely used to filter products in the chemical, coal, ceramic, petroleum and other industries.

Filter presses are known that contain vertically arranged plates with filter cloth, enclosed between the stop and pressure plates, and form filter chambers between them. In these filter presses there are devices for mechanized movement of plates and diaphragm for pressing sediment. However, in these filter stresses, there is no mechanization of sediment unloading and washing of the filter cloth to restore it to filter strength.

The proposed filter iress is characterized in that each filter nlit has on one side a concave drainage iol to remove the filtrate, and on the other a flat surface. Each plate is connected with two rollers in its upper part and with one roller - in iizhpey. On the rollers in a zigzag way

tkap, passing locking tape between the city, 1 and plates.

This ensures automatic sediment unloading, since, as the plate moves along the filter, the fabric is moved relative to the plate, and the sediment formed in the filtration chamber is completely removed.

To press the tip around the perimeter of the flat side of the plate, a waterproof diaphragm is installed, having a slurry feed hole, which, when the plates are pressed, seals the filter chamber, and between the plate and the filter creates a chamber where the water enters the screen to extract the suspension and sediment.

In order to quickly close and open the filter press between the base plate and the plate, a non-offset rod is installed on the rocker mechanism.

For faster filling, the cloth in the filter press roller, which is attached to the bottom of the filter plate, is removable.

In this design scheme, a known method of reverse washing of the fabric is carried out, since the fabric, after removal of the sediment, is turned with its used side to the frapting surface of the filtrate drainage chamber and is washed with the filtrate during the subsequent filtration cycle. On. FIG. 1 shows the proposed filterpress, general view; in fig. 2 - filter plate, general view; in fig. 3 is the same, view in FIG. 4 shows a section along A-A in FIG. 2; in fig. 5 is a section along BB in FIG. 2; FIG. 6 shows the layout of the fabric in the filter press. Filter press consists of a set of vertically arranged filter plates. The filter plates are located between the stop plates 2 and the pressure plate 3. The Uior plates are equipped with a clamp 4, along which the filter plates move. Clamping and unclamping the filter plate pabor is performed by an electromechanical or other device. In order to accelerate this operation, a rod 5 is installed between the clamping mechanism and the pressure plate 3, which, during the movement of the pressure plate, retracts when the filter press is opened and returns to its original position when it is closed using the rocker mechanism 6. The plates are moved by chain or other pull mechanism (not shown). Between a set of filter plates, a filter cloth 7. An endless belt with an endless belt. The filter screen / has a concave cavity 8 on one side to form a precipitate during filtration and a drainage device 9 for removing the filtrate. The other side of the slab has a flat surface. Along the perimeter of the flat side of the slab, a waterproof diaphragm 10 is fixed, having an opening 11 for supplying the suspension. The diaphragm is designed to extract the slurry and sediment and seal the filter chambers. For this, there is a thickening 12 along the diaphragm diaphragm. In the plates, a filter chamber is formed between the diaphragm and the concave butt of the plate, into which a suspension is fed through channel 13. The filtrate is discharged through channel 14. Through channel 15, water or air is supplied under pressure and diaphragm to press out the suspension and sediment. In order to discharge the sediment due to the movement of the plates, there are two rollers 1 () and 17 in the upper part of the filter or in the lower part, and one in the lower part 18. The roller 18 is made removable, which facilitates the dressing of the fabric. In addition, it has a scraper for removal of sediment. Through the rollers 16, 17 and 18 of each plate, the filter fabric 7 is zigzag-shaped (see Fig. 6). Filtration is carried out through two layers of tissue 19. During discharge of the sludge, the pressure plate is first discharged, and then the filtering sheets 1 move one after the other at some intervals. During the displacement of the filter plate / along the straps, the filter fabric 7 is moved relative to the plate 20. As a result, the sediment in the concave cavity 8 the filter plate is completely carried out and, on a roller 18 having a greater curvature, is separated from the weaver. The remaining precipitate is scraped off. The length of the travel path of the rabbi filtering plate between the opposite rollers 17 and 18. With this movement, the fabric of the first layer is rotated 180 ° and is replaced by the second layer. Thus, during the next filtration cycle, the fabric will be regenerated by the filtrate. After all the plates are unloaded, when the whole set of plates returns to its original position, a section of weaver equal to the length of the single plate during the discharge of the sludge falls into the tissue regeneration chamber 21, where its filtering properties are restored. In order to replace the filter cloth 7, first, its roll on the integral carriage is moved but the cross bar 22 and the "cloth loops are laid in series between all the plates. Then removable rollers 18 are removed and irodev in the “loop of weaver. After passing the fabric through the roller 23 and the chamber 21 of the regeyeration, the ends of the weaver are sewn. The fabric is tensioned by a weight of 24. The filter-nance is operated as follows. The filter plate assembly 1 is compressed by a clamping mechanism. Suspension enters the formed chambers between cavity 8 and diaphragm 10 through channel 13. In the process of filtering, sediment accumulates on fabric 7. The filtrate, the passage through the drainage device 9, is discharged through channel 14. After this, the supply of suspension stops, and but channel 15 is supplied with water or air under pressure to the diaphragm W. Spinning remains and Press sludge. At the end of the pressing, water or air is ejected through the same channel 15. Then the sediment is blown through, supplying air through Kiaalu 13. Due to this, the diaphragm 10 completely returns to its original position, and the filter press is unloaded. The gripping member of the clamping mechanism extends over a distance of about 100 mm. The pressure plate 3 is retracted by a zein or other mechanism. When it moves with the help of the rocker mechanism 6, the rod 5 is retracted. After that, the filter plates 1 move one after another with the same mechanism along the straps. At the expense of the fabric relative to the plate, the sediment is removed and separated from the weaver on the roller 18. After unloading all plates of a chain or other mechanism moves all plates 1 and the pressure plate 3 to the initial position.

Arm 6 also returns to its original position.

As a result of the return of the set of plates to the initial position, a portion of the endless web of tissue, equal in length to the movement, enters the regeneration chamber.

Using a clamping mechanism, a set of plates is clamped and the cycle is repeated.

Subject invention

Claims (4)

I. Filter press that contains vertical plates with filter cloth enclosed between the abutment plate and pressure plates and form filter chambers between them, characterized in that, in order to carry out automatic sludge discharge, each filter plate has on one side a concave drainage cavity for the drainage of the filtrate, and on the other - a flat surface and connected with two rollers at the top of the plate and one. a roller in its lower part, on which filter fabric is zigzagged between the plates. 2. The filter press according to claim 1, characterized in that, in order to squeeze the sediment, along the perimeter of the flat side of the plate, a waterproof diaphragm with a slurry opening is closed, sealing the filter chamber. 3. Filter press on PP. 1 and 2, characterized in that, in order to effect a quick closing and opening of the filter press, a pressure plate is installed between the thrust plate and the pressure plate. the rod moving on the rocker mechanism. 4. Filter press on PP. 1 and 2, distinguished by 1, iis with the fact that for a faster filling of the weave in the filter press, the roller fixed in the pizhpey part of the filter sheet is made removable, -22, 23 suspensions J l doduragna body Slamp trap uz.5 qFfm .b