CS246481B1 - Sorting surface - Google Patents

Abstract

The purpose of the solution is to achieve perfect clamping non-metallic sorting surface parts using minimum · number of fasteners thereby increasing the life of the sorting machines areas and reduce assembly and disassembly time sorting areas. This purpose is achieved Basically, by picking along the sides of the sorting surface are prismatic shape, wherein the clamping elements are formed with clamping wedges to be driven into recesses of sorting areas.

Description

The purpose of the solution is to achieve a perfect clamping of the non-metallic sorting surface parts using a minimum number of clamping elements, thereby increasing the life of the sorting surfaces and reducing the time for assembly and disassembly of the sorting surfaces. This is achieved essentially in that the recesses along the sides of the screening part are of prismatic shape, the clamping elements being formed by clamping wedges intended to be driven into the recesses of the screening part parts.

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BACKGROUND OF THE INVENTION The present invention relates to a sorting surface of elastic materials consisting of separate parts of a sorting surface, with or without stiffeners.

Some known embodiments have bosses at the bottom of these parts with grooves for attaching them to the support structure of the screening surface. These designs are consuming material.

Other solutions utilize a semi-mushroom-shaped riser screening surface at the bottom of the parts, hitting the respective holes of the support structure, thereby securing the parts to the support structure. However, they are difficult and laborious to dismantle, which can often not be carried out without damaging the part or the adjacent part, which is particularly disadvantageous when changing to a different mesh size of the screen or when replacing worn or mechanically damaged parts of the screen.

Other known embodiments are arranged such that the individual parts of the sorting surface are fixed in place, which is disadvantageous in terms of sagging and deformation of the parts of the sorting surface when loaded by the material to be separated at locations distant from the mounting points or a large number of mounting points.

The principle of the sorting surface according to the invention consists in that the hatches along the sides of the sorting surface part are prismatic and the protrusions on the underside of the part are also prismatic, the clamping elements being formed by clamping wedges intended for inclusion in the hatching parts of the sorting surface.

According to the invention, a perfect clamping of the parts of the non-metallic sorting surface is achieved by using a minimum number of clamping elements, thereby increasing the service life of the sorting surfaces and reducing the time for assembly and disassembly of the sorting surfaces.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a top view of the screen, FIG. 2 is an axoinometric view of a partially cut screen and a clamping wedge; FIG. 4 and 5, the decisive stages of assembly of the screening surface are decisive.

The screening area consists of parts 1 of the screening area and clamping wedges 8.

The parts 1 of the screening surface have prismatic recesses 2a, 2b along at least two opposite sides, possibly at their edges, and at the bottom of these parts 1 protrusions 3 also of prismatic shape, which extend through the grooves of the support structure 4. Recess 2a in the upper part of the screening part 1 is wider than the recess 2b at the bottom of the part 1. The projections 3 of the screening part 1 have a reinforcement 5 towards the edge of the part 1 or a double-sided reinforcement 6 at their ends. an angle α greater than or equal to 90 °. An angle α greater than 90 ° allows for easy insertion of the bosses 3 with bilateral reinforcement 6 into the grooves of the support structure 4 and a better clamping of the part 1 with a wedge 8. The seating surface 7 of the sorting surface 1 can be recessed with The clamping wedge 8 is of prismatic shape and has a cross-sectional shape of a pin with a head 9 and a shank 10, which is tapered at its end 11. The head 9 is provided with grooves 12 for easier disassembly of the wedge 8. The elevation 14 of the wedge 8 on the upper surface 16 serves to cut the flow of material, thereby increasing the sorting efficiency. The elevation 14 may be provided with a chamfer 17.

The parts of the screening surface 1 can be reinforced with stiffeners 15. Assembly of the screening surface is carried out by assembling the screening surface parts 1 into a continuous screening surface and striking the clamping wedges 8 of the prismatic shape of the screening recesses 2a, 2b. 3 in the grooves of the load-bearing structure 4, for a perfect fixing. The screen can be removed after removing the clamping clinics 8.

The embodiment according to the invention is suitable for both sorting surfaces of polyurethane and other similar elastic materials, as well as for sorting surfaces of rubber, which have lower strength compared to polyurethane. Parts of the screening surfaces may be with or without stiffeners or may be mounted with partial bias.

Claims (10)

A screening surface consisting of separate parts of a screening surface of rubber, polyurethane or other elastic material, in which recesses are provided along at least two opposite sides of the parts and protrusions extending at their lower portions through the apertures of the supporting structure, the individual parts of this surface being fixed to supporting structure by means of clamping elements, characterized in that the recess ( 2a, 2b) are prismatic in shape and the protrusions (3j on the underside of the parts (1j are also prismatic), but the clamping elements are formed by clamping wedges (8) intended to drive the recesses (2a, 2bj of the parts (1j. i2. Sorting surface according to claim 1, characterized in that the prismatic recesses (2a, 2b) are wider in the upper part of the sorting surface part (1) than in the lower part of the surface part (1j). 3. The sorting surface according to claim 1, characterized in that the projections (3) of the sorting part (1j) have at their ends towards the edge of the part (1) a reinforcement (5). 24E481 Sorting surface according to Claims 1 and 2, characterized in that the projections (3) of the sorting surface part (1) have bilateral reinforcement (6) at their ends. Sorting surface according to one of Claims 1 to 4, characterized in that the inner walls of the projections (3) of the sorting surface part (1) form an angle (α) of greater than or equal to 90 ° with the contact surface (7) of the part (1). 6. The sorting surface according to claim 1, wherein the screening part (1) is reinforced by stiffeners (15). Sorting surface according to Claims 1 to 6, characterized in that the bearing surface (7) of the sorting surface part (1) is recessed with respect to the lower surface (13) of the part (1). Sorting surface according to one of Claims 1 to 7, characterized in that the cross-section of the clamping wedge (8) is in the form of a pin with a head (9) and a shaft (10), the shaft (10) being tapered at its end (11i). Sorting surface according to one of Claims 1 to 8, characterized in that the head (9) of the clamping key (8) is provided with an elevation (14) relative to the upper surface (16) of the sorting surface part (1). Sorting surface according to one of Claims 1 to 9, characterized in that the head (9) of the chuck (8) is provided with one or more grooves (12).