SU713615A1 - Cylindrical sieve cleaning apparatus - Google Patents

Description

one

The invention relates to a device for cleaning cylindrical sieves and can be used in the chemical, mining and agricultural industries.

A cleaner is known, which includes a block equipped with bunches of hair and made in the form of a closed contour with three internal vanes C.

The disadvantages of this cleaner are the poor quality of the cleaning of the sieve, due to the small relative: the speed of movement of the brushes, as well as the rapid wear of the hair bundles and, therefore, their frequent replacement.

A known cleaner of cylindrical sieves includes pads made in the form of rings with holes and installed around the sieve with a clearance for it t 2J.

The disadvantage of this device is that if certain combinations of operating parameters of the sieve are inevitably, such movement of the cleaner rings will inevitably lead to some areas of the sieve not being cleaned.

The aim of the invention is to increase the cleaning efficiency of the sieve.

This goal is achieved by the fact that the holes in the rings are located along helical lines.

FIG. 1 shows a cleaner of cylindrical sieves mounted on a sieve; in fig. 2 is a schematic diagram of a purifier; in fig. 3 shows a kinematic diagram of the movement of the ring pad cleaner.

Claims (2)

The cleaner of the cylindrical sieves includes pads 1 mounted loosely on the cylindrical sieve 2. Sieve 2 rotates on the spring-loaded axis 3, which oscillates. Block 1 includes holes 4 for the exit of the feed fraction located along the contour of the rings in the form of helical lines, and working surfaces 5. 3, 7 The cleaner of the cylindrical screens works as follows. The radial sieve oscillations along a certain trajectory 6 with a frequency w lead to the displacement of the center of gravity of the pads 1 around the axis 3 of the sieve 2 with the same frequency. With such a movement, the subclutter 1 rolls around the outer diameter of the sieve 2 and pushes the stuck particles (The material to be actuated by the working surfaces 5 at the points of their contact K inside the sieve 2. Passing faction-. The chi of the material being processed is ejected by inertia forces through the holes 4 to the outside. Since in the considered cleaner, the working surfaces 5, as well as the holes 4, are guided along helix lines, their length (with appropriate selection of the helix inclination angle) exceeds the length of the displacement step cc of head 1 of the screen cleaner. This ensures that the working surfaces 5 of the cleaner do not jump over during its operation through the unclean parts of the sieve for any technologically acceptable combination of operating mode parameters. In the proposed cleaner, the efficiency of the sieve cleaning process from the stuck particles of the processed material does not decrease, depending on the nomenal of the operating parameters of the sieve. On the other hand, with the screw arrangement of the working surfaces 5 of the cleaner, their width can be made whatever. At the same time, the particles of the material being processed, the working surfaces 5 of the cleaner 5, pass freely through its openings 4, which eliminates the injury and arresting of the material. Formulaisob. Cylindrical sieve cleaner, including pads, made in the form of rings with holes and installed around the sieve with a gap to it, characterized in that, in order to evaluate the sieve cleaning efficiency, the holes in the rings are arranged along helical lines. tye into account during the examination 1. USSR Copyright Certificate № 514649, cl. B 07 B 1/52, 01/08/74. 2, USSR Author's Certificate in Application No. 2555897, cl. B 07 B 1 / 5O, 12.19.77 (prototype). Jjr / 1 L 7 TG ° FIG. Fi.g.3