RU2021185C1 - High-angle conveyor - Google Patents

Abstract

FIELD: mining industry. SUBSTANCE: conveyor has rigid ring box with working compartments on inner side of box. Box is installed for rotation on supports. Conveyor has also working compartment guard arrangement installed from inner side of box and made in form of closed pressure band overlapping the compartments, and also pressure band guide members, charging and discharging devices and box rotating drive. Pressure band is arranged over inner perimeter of ring box and is secured by one edge on inner edge of one of side walls of ring box, this side being arranged opposite to charging device. Pressure band guide members are installed for deflecting the other edge of band from the other side wall of ring box at places where working compartments are being charged and discharged. EFFECT: enlarged operating capabilities. 3 cl, 3 dwg

Description

 The invention relates to the movement of bulk rock materials at a large angle to the horizon at crushing and screening plants of any mining and processing industry, and more particularly to steeply inclined conveyors, the so-called rotary elevators with a rigid annular frame and cells for moving material.

 Known steeply inclined conveyor with a rigid annular frame (box) and working cells created using transverse partitions. The advantages of this device are simplicity of design, low power consumption, and high reliability. However, it also has a number of disadvantages. One of them is the low utilization of the structure in height, because the moved material begins to fall out of the cells as soon as they cross the horizontal plane passing through the axis of rotation of the box. There is also a premature spill of material - a phenomenon that brings a lot of trouble to the operator. The location of the partitions at an angle to the radial direction to a certain extent increases the efficiency of the conveyor, however, the complete elimination of these shortcomings has not been achieved.

 Known steeply inclined conveyor (rotary elevator). Its peculiarities consist in the fact that on the lifting section to prevent premature precipitation of material from the cells and to prevent spillage, a conveyor with a curved frame is installed, the outer branch of the belt overlapping the working cells filled with the material being moved, thereby eliminating the aforementioned disadvantages of the previous device. The main disadvantage of this conveyor is the high complexity of the design, which complicates its maintenance and operation. It should also be noted the increased cost of the elevator.

 The aim of the invention is to simplify the design, facilitate maintenance and operation of the conveyor, reducing its cost.

 To achieve this goal, the working cells on the inside are completely covered by a closed clamping belt with sufficient elasticity (conventional conveyor belts are successfully used for this purpose), attached at one edge to the inner contour of the box wall opposite the loading device, and deflected at the points of loading and unloading conveyor from the end of the other wall of the box using deflecting elements, such as rollers.

 With a small diameter of the annular box and with a relatively small capacity of the cells (with a small width and height), the elasticity of the clamping tape is usually sufficient to hold the transported material in the cells, deviation of the tape from the box wall does not occur and no devices are required to prevent spillage. Moreover, the curvature (vaulting) of the tape increases its holding capacity several times.

 With an increase in the diameter of the box, the curvature of the tape decreases, its clamping and holding abilities deteriorate and it may be necessary, in order to maintain or increase the tightness of the overlap of the working cells, to provide the lifting section with clamping elements to prevent the closed clamping tape from deviating from the box wall under the influence of the weight of the transported load. This can be ordinary conveyor rollers or an arc of a slightly smaller radius (compared with the radius of the inner contour of the annular box), lined with synthetic material with a low coefficient of friction, for example, caprolon, polyurethane, displaced in the direction of the loose edge of the clamping belt, mounted on a fixed section of the conveyor body in the direction of movement of the material.

 In some cases, it may turn out to be more advantageous instead of clamping devices to artificially increase the elasticity of the clamping tape by supplying it with elastic steel plates attached to the inner contour of the duct wall opposite to the loading device, located across the tape at a distance that provides the planned elasticity depending on the size of the conveyor and the lumpiness of the conveyed materials.

 In FIG. 1 shows a side view of the conveyor; figure 2 - plot loading conveyor; figure 3 - plot discharge conveyor.

 The steeply inclined conveyor consists of a rigid annular duct 1, the outer part of which is bounded on both sides by walls 2 and 3, as well as by a bottom 4, to which partitions 5 are attached (usually at an angle to the radial direction), forming cells closed on 5 sides. The annular box rests on rollers 6, one of which is the lead (the drive is not shown). The cells on the inside are covered by a closed clamping tape 7, attached at one edge to the inner contour of the wall 2 of the box 1, opposite the loading device 8 (tray), and deflected at the places of loading 9 and unloading 10 using deflecting rollers 11 from the other wall of the box 3. Start rashes (the beginning of the unloading zone) is regulated by a roller 12, moved along an annular path within the angle of adjustment with the help of a link mounted on a fixed frame (not shown in the drawing). The conveyor lifting section can be equipped with clamping elements (rollers; an arc lined with a material with a low coefficient of friction) 13, which prevent the clamping tape from deflecting from the box wall under the influence of the weight of the load. In order to increase the elasticity of the tape 7, it can be equipped with transverse springy steel plates 14 attached to the inner contour of the wall 2 of the box 1 at a distance that ensures the operability of the tape, depending on the size of the box and the lumpiness of the materials moved 15. The unloading of the box 1 is carried out on the tray (conveyor) sixteen.

 The conveyor works as follows.

 The material with the help of the tray 8 enters the lower part of the box 1. The edge of the pressure tape 7 is raised above the wall 3 of the box 1 with a deflecting roller (s) 11 to a height sufficient for unhindered loading of the cells with the moved material 15. When leaving the loading zone 9 filled with material the cells are tightly covered by the clamping tape 7, thereby preventing premature precipitation of the material 15 from the cells. The material delivered to a higher level due to the upper deflecting roller 11 is unloaded on the tray (conveyor) 16 and moves in a given direction.

Claims (3)

 1. A STEEL-INCLINED CONVEYOR, including a rigid ring box mounted with the possibility of rotation on supports, with working cells on the inside of the box, a protective device of the working cells located on the inside of the box in the form of a closed clamping tape overlapping them, guiding elements for the clamping tape, loading and unloading devices , and a box rotation drive, characterized in that, in order to simplify the design and ease of maintenance, a closed clamping tape is located on the inner perimeter a meter of the annular box and one edge is fixed to the inner edge of one of the side walls of the annular box, which is located on the opposite side from the loading device, while the guide elements for the clamping tape are installed with the possibility of deviation of the other edge of the clamping tape from the other side wall of the ring box in the places of loading and unloading the working cells.  2. The conveyor according to claim 1, characterized in that, in order to increase the tightness of the working cells, it has clamping elements installed on the lifting section to prevent the closed tape from deflecting from the box wall under the influence of the weight of the transported load.  3. The conveyor according to claim 1, characterized in that, in order to increase the elasticity of the clamping tape, it has elastic steel transverse plates to support the tape, which are fixed on the side wall of the annular duct located on the opposite side from the loading device.

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