Impurity removal device for removing bar-shaped objects

Abstract

The impurity removing device is arranged on the upper portion of a dust cover, a rectangular impurity discharging opening is formed in the front face of the upper portion of the dust cover, the impurity removing device comprises a fixing frame fixed to the upper portion of the dust cover, and the fixing frame is arranged right in front of an upstream belt conveyor head roller in the dust cover. Comprising wing protection side plates arranged on the left side and the right side, the wing protection side plates are connected with a side plate of a dust cover through first connecting bolts, a connecting side plate is arranged between the wing protection side plates on the two sides, a connecting plate is arranged on the outer edge of the connecting side plate, and the connecting plate is connected with the upper edge of a sundry discharging plate through second connecting bolts. The sundry discharging plate extends downwards and forwards to abut against the lower edge of the sundry discharging opening, the sundry discharging opening is provided with a dust blocking curtain, and a sundry box is arranged in front of the sundry discharging opening. The purpose of effectively separating coal flow from bar-shaped sundries is achieved, and the problem that the chute is blocked is effectively reduced; and the sundry conveying plate can be flexibly disassembled and assembled.

Description

Technical Field

[0001] This utility model relates to the technical field of coal preparation and impurity removal, specifically to an impurity removal device for removing rod-shaped objects. Background Technology

[0002] Belt conveyors are one of the main material transport equipment in coal preparation plants. During the transport of raw coal or externally sourced coal into the plant, the material often contains a large amount of debris, with anchor bolts, rubber sheets, and long, rod-like objects such as wooden bars being the main types. These debris frequently get stuck inside the coal chute during transfer, causing blockages and shutdowns. Furthermore, even after multiple transfers into the subsequent washing and processing system, these materials can easily damage equipment, causing belt scraping, crusher damage, wear on shallow chutes and hydrocyclones, and wear on centrifuge screen baskets. These problems affect system operation, production, and the effectiveness of sorting and grading, leading to increased pressure on heavy media separation and coal slurry water treatment processes. This directly impacts the normal operation of the production system and, in severe cases, can cause system shutdowns. Currently, there is a lack of efficient debris removal tools and methods, relying mainly on manual labor or simple homemade tools for effective cleaning, resulting in insignificant debris removal and low efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a device for removing impurities from a belt conveyor to remove rod-shaped objects, thereby solving the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model is a debris removal device for removing rod-shaped objects. It is installed on the upper part of a dust cover. The upper front of the dust cover has a rectangular debris discharge port. The debris removal device includes a fixing frame fixed on the upper part of the dust cover. The fixing frame is located in front of the head roller of the upstream belt conveyor inside the dust cover. It includes left and right side guard plates. The side guard plates are connected to the side plates of the dust cover by first connecting bolts. A connecting plate is provided between the two side guard plates. A connecting plate is provided on the outer edge of the connecting plate. The upper edge of the debris discharge plate is connected to the connecting plate by second connecting bolts. The debris discharge plate extends downward and forward to abut against the lower edge of the debris discharge port. A dust curtain is provided at the debris discharge port. A debris box is provided in front of the debris discharge port.

[0005] Furthermore, it includes a slide, which is symmetrically arranged on the side plate of the dust cover, parallel to the debris discharge plate, with the upper end of the slide contacting the lower end of the fixing frame.

[0006] Furthermore, the storage box is installed in front of the dust cover.

[0007] Furthermore, the debris discharge plate is at a 45-degree angle.

[0008] Furthermore, the dust curtain uses fine rope-like polyurethane dustproof strips.

[0009] This utility model's impurity removal device for removing rod-shaped debris is simple and practical. By cleverly modifying the dust cover in front of the conveyor belt drop point and designing and installing a debris discharge plate in front of the conveyor belt drum, it utilizes the principle of the difference in parabolic trajectory between the coal transported by the conveyor belt and the rod-shaped debris such as anchor rods and wooden sticks mixed in with it to achieve the purpose of effectively separating the coal flow from the rod-shaped debris, effectively reducing the problem of chute blockage; and it also realizes the flexible disassembly and installation function of the debris conveying plate. Attached Figure Description

[0010] Figure 1 This is a side view of the present invention;

[0011] Figure 2 This is a front view of the present invention;

[0012] Figure 3 This is a schematic diagram of the debris discharge plate and fixing frame in this utility model.

[0013] In the diagram: 1-Upper part of dust cover; 2-Dust curtain; 3-Debris discharge plate; 4-Fixing frame; 41-Connecting side plate; 42-Connecting plate; 43-Wing side plate; 44-First connecting bolt; 45-Second connecting bolt; 5-Slide rail; 6-Bar-shaped debris; 7-Debris box; 8-Lower part of dust cover; 9-Coal flow; 10-Upstream belt conveyor; 11-Chutter; 12-Downstream belt conveyor. Detailed Implementation

[0014] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed description of a device for removing rod-shaped objects.

[0015] When conveyor belts transfer materials to the next transfer point, the conveyed materials follow a parabolic trajectory, and their throwing distance is greatly affected by characteristics such as density, size, and shape. Specifically, materials with higher density experience greater air resistance, resulting in a shorter throwing distance; conversely, materials with lower density are more easily thrown further. The shape of the material also affects its throwing distance. For flat-bottomed materials, the throwing distance is relatively longer due to lower air resistance; while for round or spherical materials, the throwing distance is relatively shorter due to higher air resistance. Coal and rod-shaped debris such as anchor bolts and wooden sticks exhibit significantly different trajectories due to the aforementioned differences in characteristics. Coal, being denser and generally round or spherical, has a shorter throwing distance and typically falls vertically into the coal chute below due to gravity after being transported to the conveyor belt head. Rod-shaped debris such as anchor bolts and wooden sticks, being lighter and flat-bottomed, travel a longer parabolic distance during transfer, easily impacting the front plate of the coal chute before falling into the chute. Based on the different throwing trajectories of coal and rod-shaped debris such as anchor bolts and wooden sticks during conveyor belt transfer and descent, a debris removal device for removing rod-shaped debris was designed.

[0016] like Figures 1-3 As shown, the device is installed on the upper part 1 of the dust cover. The front of the upper part 1 of the dust cover has a rectangular debris discharge port. The debris removal device includes a fixing frame 4 fixed on the upper part 1 of the dust cover. The fixing frame 4 is located in front of the head roller of the upstream belt conveyor 10 inside the dust cover. It includes side plates 43 on the left and right sides. The side plates 43 are connected to the side plates of the dust cover by the first connecting bolt 44. A connecting plate 41 is provided between the side plates 43 on both sides. A connecting plate 42 is provided on the outer edge of the connecting plate 41. The upper edge of the debris discharge plate 3 is connected to the connecting plate 42 by the second connecting bolt 45. The debris discharge plate 3 extends downward and forward and abuts against the lower edge of the debris discharge port. A dust curtain 2 is provided at the debris discharge port. A debris box 7 is provided in front of the debris discharge port.

[0017] Specifically, the front of the original sealed dust cover 1 is modified into an open outlet as a waste discharge port. To ensure the dust prevention effect, a dust curtain 2 is installed at the waste discharge port. The dust curtain 2 is made of short, fixed, thin rope-like polyurethane dustproof strips.

[0018] In this embodiment, the fixing frame 4 is positioned directly in front of the head roller of the upstream conveyor belt 10 (horizontally approximately 60-80cm in front of the roller surface, and vertically approximately 15-20cm below the roller centerline, and can be adjusted according to actual conditions). The fixing frame 4 is constructed by welding flat iron and angle steel together. The side plates 43 of the fixing frame on both sides are connected to the side plates of the dust cover by the first connecting bolt 44, thus achieving the purpose of installing the fixing frame 4. The upper end of the debris discharge plate 3 is fixed to the connecting plate 42 by the second connecting bolt 45, and the lower end of the debris discharge plate 3 is placed at the lower edge of the debris discharge port of the dust cover, making it at an angle of about 45 degrees. The debris box 7 is installed in front of the dust cover and at the lower part 8 of the dust cover, allowing the rod-shaped debris 6 to slide down the debris discharge plate 3 into the debris box 7. A slide rail 5 is installed on the side plate of the upper part 1 of the dust cover. The slide rail 5 is parallel to the debris discharge plate 3. The upper end of the slide rail 5 contacts the lower end of the fixing frame 4, which facilitates the disassembly of the debris discharge plate 3 and the fixing frame 4.

[0019] When the upstream belt conveyor 10 transfers raw coal or external blended coal to the next transfer point, due to the long throwing distance of rod-shaped debris such as anchor bolts and wooden sticks when they fall off the belt conveyor, they land on the debris discharge plate 3 installed inside the dust cover and fall into the debris box 7 below through the debris discharge port on the front side of the dust cover. The coal flow 9 then enters the chute 11 and is transferred to the downstream belt conveyor 12 for further transfer and transportation.

[0020] When it is necessary to replace the debris discharge plate 3 or to inspect the chute 11, remove the first connecting bolt 44 and remove the fixing frame 4 along with the debris discharge plate 3 along the slide 5 to the outside of the dust cover for processing. If it is necessary to replace the debris discharge plate 3 further, continue to remove the second connecting bolt 45 and then replace the debris discharge plate 3.

[0021] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A device for removing impurities from rod-shaped objects, characterized in that, The dust cover is set on the upper part (1), and the front of the upper part (1) of the dust cover is provided with a rectangular debris discharge port. The debris removal device includes a fixed frame (4) fixed on the upper part (1) of the dust cover. The fixed frame (4) is set in front of the head roller of the upstream belt conveyor (10) inside the dust cover. It includes side plates (43) on the left and right sides. The side plates (43) are connected to the side plates of the dust cover by the first connecting bolt (44). A connecting plate (41) is set between the side plates (43) on both sides. A connecting plate (42) is set on the outer edge of the connecting plate (41). The upper edge of the debris discharge plate (3) is connected to the connecting plate (42) by the second connecting bolt (45). The debris discharge plate (3) extends downward and forward to abut the lower edge of the debris discharge port. A dust curtain (2) is set at the debris discharge port. A debris box (7) is set in front of the debris discharge port.

2. The impurity removal device for removing rod-shaped objects according to claim 1, characterized in that, Includes a slide (5), which is symmetrically arranged on the side plate of the dust cover. The slide (5) is parallel to the debris discharge plate (3), and the upper end of the slide (5) is in contact with the lower end of the fixing frame (4).

3. The impurity removal device for removing rod-shaped objects according to claim 1, characterized in that, The storage box (7) is installed in front of the dust cover.

4. The impurity removal device for removing rod-shaped objects according to claim 1, characterized in that, The debris discharge plate (3) is at a 45-degree angle.

5. The impurity removal device for removing rod-shaped objects according to any one of claims 1 to 4, characterized in that, The dust curtain (2) uses fine rope-shaped polyurethane dustproof strips.

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