Conveying belt cleaning device and mineral powder conveyor

Abstract

The utility model discloses a conveyor belt cleaning device and a mineral powder conveyor, the conveyor belt cleaning device comprises an outer frame, supporting rollers and a lower pressing roller, the two supporting rollers used for supporting a conveyor belt are rotatably installed in the outer frame, the lower pressing roller is installed between the two supporting rollers, and the lower pressing roller is used for pressing the conveyor belt downwards to enable the conveyor belt to protrude downwards; the device further comprises a transverse brush device, the transverse brush device is installed below the lower pressing roller, and an included angle is formed between the installation direction of the transverse brush device and the installation direction of the conveying belt. The conveyor belt cleaning device has a better effect of cleaning a conveyor belt with transverse raised stripes.

Description

Technical Field

[0001] This utility model relates to the field of mineral powder conveyor technology, and in particular to a conveyor belt cleaning device and a mineral powder conveyor. Background Technology

[0002] In the production of compound fertilizer, phosphate rock needs to be crushed into small particles. Phosphoric acid is then produced by reacting these phosphate rock particles with sulfuric acid. During the crushing process, a significant amount of dust is generated, requiring water spraying for dust suppression. This causes the wet ore particles to easily stick to the conveyor belt. As the conveyor belt rotates, the ore powder is carried to the lower layer of the belt. During this movement, the ore particles fall off due to vibration, resulting in them spilling onto the ground. Because the conveyor belt has raised stripes along its width, it is impossible to use a scraper to remove the ore powder.

[0003] A search revealed Chinese patent document CN209291390U, published on August 23, 2019, which discloses a belt cleaning system. The system includes a water inlet pipe, a fixing block, a first pressure roller, a support roller, a housing, a fixing plate, a repair door, a door latch, a water funnel, a second pressure roller, a first cleaner, a second cleaner, a first spray pipe, a third cleaner, a second spray pipe, and an air spray pipe. Its key feature is that fixing blocks and fixing plates are fixedly installed on the upper surface of the housing. The fixing blocks are located at the four corners of the upper surface of the housing, and the fixing plates are oppositely located on both sides of the upper surface of the housing. Its advantages include: reducing return material, achieving material savings, increasing profits; avoiding belt damage, reducing belt maintenance costs, and extending belt life. Its disadvantages are: the cleaner uses a scraper, which is not ideal for conveyor belts with transverse raised stripes, and it cannot clean ore particles within the transverse cracks. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the problems existing in the background art and provide a conveyor belt cleaning device that has a better effect on cleaning conveyor belts with transverse raised stripes.

[0005] Another technical problem to be solved by this utility model is to provide a mineral powder conveyor equipped with the conveyor belt cleaning device of this application.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a conveyor belt cleaning device, including an outer frame, support rollers and a lower pressure roller. Two support rollers for supporting the conveyor belt are rotatably installed inside the outer frame. The lower pressure roller is installed between the two support rollers and is used to press down on the conveyor belt so that the conveyor belt bulges downward. It also includes a horizontal brush device, which is installed below the lower pressure roller. The installation direction of the horizontal brush device forms an angle with the installation direction of the conveyor belt.

[0007] The horizontal brush device is a brush roller, which is mounted inside the outer frame and rotates via a central shaft. The motor is mounted on the outer frame, and the output shaft of the motor is connected to the central shaft of the brush roller via a transmission connection.

[0008] The horizontal brush device includes belt rollers and belt brushes. The two belt rollers are rotatably mounted in the outer frame via a central shaft, and the two belt rollers are located at the two ends of the conveyor belt width direction. The belt brush is fitted on the two belt rollers. The motor is mounted on the outer frame, and the output shaft of the motor is connected to the central shaft of one of the belt rollers.

[0009] Inside the outer frame, support plates are installed on both sides of the horizontal brush device, and the horizontal brush device is installed between the support plates on both sides.

[0010] The outer frame has longitudinal slots at the corresponding positions at both ends of the lower pressure roller. The two ends of the lower pressure roller's lower pressure spindle extend out of the slots on both sides. A pressure plate is installed on the upper side of the slot on the outer frame. A lower pressure screw is threadedly installed on the pressure plate and abuts against the lower pressure spindle.

[0011] Inside the outer frame, a toggle device is installed on the lower side of the horizontal brush device. The toggle device is used to toggle the bristles on the horizontal brush device.

[0012] The actuating device is a stop bar; in use, the brush bristles elastically sweep across the stop bar.

[0013] The actuating device includes a stop bar with multiple rows of comb teeth fixed on it. Adjacent comb teeth are staggered, and in use, the bristles elastically sweep across the comb teeth.

[0014] The inner wall of the outer frame has multiple inclined plates installed on the lower side of the horizontal brush device, with the lower end of the inclined plates forming a discharge port.

[0015] A mineral powder conveyor is equipped with the aforementioned conveyor belt cleaning device, wherein the lower layer of the conveyor belt of the mineral powder conveyor passes between the support roller and the lower pressure roller, and the transverse brush device is located below the conveyor belt.

[0016] The present invention has the following beneficial effects:

[0017] 1. The installation direction of the horizontal brush device of this utility model forms an angle with the installation direction of the conveyor belt, and the horizontal brush device corresponds to the direction of the raised stripes of the conveyor belt, thereby having a better cleaning effect on the conveyor belt with horizontal raised stripes.

[0018] 2. This utility model adopts a belt brush structure, which can cover the entire width of the conveyor belt and clean without leaving any dead corners.

[0019] 3. When the bristles on the belt brush wear down, the lower pressure roller can be adjusted downward by rotating the lower pressure screw to reduce the gap between the conveyor belt and the belt brush.

[0020] 4. The present invention has a toggle device installed on the lower side of the horizontal brush device. The toggle device is used to toggle the bristles on the horizontal brush device and use the elasticity of the bristles to detach any mineral particles that may be present on the bristles. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0023] Figure 2 for Figure 1 Schematic diagram of the AA section structure.

[0024] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle BB.

[0025] Figure 4 for Figure 1 Enlarged structural diagram at point K.

[0026] Figure 5 This is a schematic diagram of the structure of the toggle device of this utility model.

[0027] In the picture:

[0028] Conveyor belt 1;

[0029] Outer frame 10, slot 111, side plate 11, connecting plate 12, support plate 13, inclined plate 14, discharge port 15;

[0030] Support roller 20, first bearing seat 21, lower pressure roller 30, lower pressure roller cylinder 31, lower pressure mandrel 32;

[0031] Belt roller 40, second bearing seat 41, belt brush 50, motor 60, coupling 61, actuating device 70, stop bar 71, comb teeth 72, threaded hole 73, pressure plate 80, and pressing screw 81. Detailed Implementation

[0032] Example 1:

[0033] like Figure 1-3As shown, a conveyor belt cleaning device includes an outer frame 10, support rollers 20, and a lower pressure roller 30. Two support rollers 20 for supporting the conveyor belt 1 are rotatably installed inside the outer frame 10. The lower pressure roller 30 is installed between the two support rollers 20 and is used to press down on the conveyor belt 1 so that the conveyor belt 1 bulges downward. It also includes a horizontal brush device, which is installed below the lower pressure roller 30. The installation direction of the horizontal brush device forms an angle with the installation direction of the conveyor belt 1.

[0034] In this embodiment, the installation direction of the horizontal brush device forms a 90° angle with the installation direction of the conveyor belt 1.

[0035] Of course, since some of the raised stripes on the conveyor belt are V-shaped, the horizontal brush device can also change its angle according to the direction of the raised stripes. For V-shaped raised stripes, two conveyor belt cleaning devices can be installed on the lower layer of conveyor belt 1, and the installation direction of the horizontal brush device corresponds to half of the V-shaped raised stripe.

[0036] In this embodiment, the horizontal brush device is a brush roller, which is rotatably mounted inside the outer frame 10 via a central shaft. A motor 60 is mounted on the outer frame 10, and the output shaft of the motor 60 is drive-connected to the central shaft of the brush roller. The brush roller is existing technology and will not be described in detail here. The central shafts at both ends of the brush roller can be mounted on the outer frame 10 via second bearing seats 41, and the output shaft of the motor 60 is drive-connected to the central shaft of the brush roller via a coupling 61.

[0037] After a period of use, due to the tensile stress on the conveyor belt and the aging of the rubber, transverse cracks appear on the belt. These cracks easily trap ore particles, causing them to expand and shorten the belt's lifespan. Therefore, it is necessary to simultaneously clean the particles from these cracks. (See the above structure for details.) Figure 3 As the two support rollers 20 lift the conveyor belt 1 and the lower pressure roller 30 presses down on the conveyor belt 1, the transverse cracks on the lower side of the conveyor belt 1 open, making it easier for the ore particles in the transverse cracks to fall off. At the same time, the bristles on the brush roller can extend into the transverse cracks, thereby further sweeping off the ore particles in the transverse cracks.

[0038] The above structure enables this application to have a better effect on cleaning conveyor belts with transverse raised stripes, and to clean ore particles inside transverse cracks in the conveyor belt.

[0039] In this embodiment, see Figure 1-3 The outer frame 10 includes two side plates 11 and two connecting plates 12. The two side plates 11 and the two connecting plates 12 are combined by welding or bolting to form a frame with openings at the top and bottom. The height of the top of the two connecting plates 12 is lower than the height of the two side plates 11, so that the conveyor belt 1 can pass through.

[0040] In this embodiment, the central shafts at both ends of the support roller 20 are respectively mounted on the outer frame 10 through the first bearing seat 21.

[0041] The lower pressure roller 30 includes a lower pressure roller cylinder 31 and a lower pressure mandrel 32. The lower pressure roller cylinder 31 is rotatably mounted on the lower pressure mandrel 32 via bearings. The two ends of the lower pressure mandrel 32 are respectively installed and connected to two side plates 11.

[0042] Example 2:

[0043] The difference from the embodiments is that, see [link to example]. Figure 1-3 The horizontal brush device includes belt rollers 40 and belt brushes 50. Two belt rollers 40 are rotatably mounted inside the outer frame 10 via a central shaft, and are located at opposite ends of the conveyor belt 1 in the width direction. The belt brushes 50 are fitted onto the two belt rollers 40. A motor 60 is mounted on the outer frame 10, and the output shaft of the motor 60 is connected to the central shaft of one of the belt rollers 40. Because brush rollers cannot completely clean the entire conveyor belt 1, or require multiple brush rollers to achieve the same coverage, cleaning dead zones exist between adjacent brush rollers. However, the structure of the belt brushes 50 can cover the entire width direction of the conveyor belt 1 without leaving any dead zones.

[0044] In this embodiment, the central shafts at both ends of the belt roller 40 are rotatably connected to the outer frame 10 through the second bearing seat 41, and the output shaft of the motor 60 is connected to the central shaft of one of the belt rollers 40 through the coupling 61.

[0045] If necessary, a tensioning mechanism can also be installed on the passive belt roller 40 to tension the belt brush 50.

[0046] Example 3:

[0047] Based on Example 1 or Example 2, see Figure 1-3 Inside the outer frame 10, support plates 13 are installed on both sides of the horizontal brush device, and the horizontal brush device is installed between the support plates 13 on both sides. This structure reduces the length of the central shaft of the belt roller 40.

[0048] Specifically, the support plate 13 is installed inside the outer frame 10 by bolts, which facilitates the disassembly and replacement of the belt brush 50.

[0049] During installation, the central shafts at both ends of the belt roller 40 pass through the support plate 13 and are rotatably connected to the second bearing seat 41 mounted on the support plate 13.

[0050] The first bearing housing 21 and the second bearing housing 41 are UCF bearing housings.

[0051] Example 4:

[0052] Based on Example 1, 2, or 3, see [link to example]. Figure 1 , 4 The outer frame 10 has longitudinal slots 111 at positions corresponding to both ends of the lower pressure roller 30. The lower pressure spindle 32 of the lower pressure roller 30 extends from both ends of the slots 111. A pressure plate 80 is mounted on the upper side of the slots 111 on the outer frame 10. A lower pressure screw 81 is threaded onto the pressure plate 80 and abuts against the lower pressure spindle 32. With this structure, when the bristles on the belt brush 50 wear down, the lower pressure roller 30 can be adjusted downwards by rotating the lower pressure screw 81, reducing the distance between the conveyor belt 1 and the belt brush 50.

[0053] With the above structure, the two ends of the lower pressure mandrel 32 are axially limited within the outer frame 10 by steps.

[0054] Example 5:

[0055] Based on Example 1, 2, 3, or 4, see [link to example]. Figure 1 , 2 5. Inside the outer frame 10, a toggle device 70 is installed on the lower side of the horizontal brush device. The toggle device 70 is used to toggle the bristles on the horizontal brush device and use the elasticity of the bristles to detach any mineral particles that may be present on the bristles.

[0056] In one embodiment, the actuating device 70 is a stop lever 71; in use, the bristles elastically sweep across the stop lever 71.

[0057] In another option, see Figure 5 The actuating device 70 includes a stop bar 71, on which multiple rows of comb teeth 72 are fixed. Adjacent comb teeth 72 are staggered. In use, the bristles elastically sweep across the comb teeth 72.

[0058] During installation, threaded holes 73 are provided at both ends of the stop bar 71, and the stop bar 71 is connected to the outer frame 10 by bolts.

[0059] Example 6:

[0060] Based on Example 1, 2, 3, 4, or 5, see [link to example]. Figure 1 , 2 3. The inner wall of the outer frame 10 has multiple inclined plates 14 installed on the lower side of the horizontal brush device. The lower end of the inclined plate 14 forms a discharge port 15, which facilitates the collection of brushed-off ore particles.

[0061] Example 7:

[0062] Based on Example 1, 2, 3, 4, 5, or 6, see [link to example]. Figure 1A mineral powder conveyor is equipped with the aforementioned conveyor belt cleaning device, wherein the lower layer of the conveyor belt 1 of the mineral powder conveyor passes between the support roller 20 and the lower pressure roller 30, and the horizontal brush device is located below the conveyor belt 1.

[0063] The operation process or principle of this utility model is as follows:

[0064] When working, see Figure 1 The conveyor belt 1 rotates counterclockwise, with two support rollers 20 lifting it and the lower pressure roller 30 pressing it down. This causes the transverse cracks on the lower side of the conveyor belt 1 to open, facilitating the removal of ore particles from the cracks. Simultaneously, the motor 60 starts, driving one of the belt rollers 40 to rotate via the coupling 61. This, in turn, drives the belt brush 50 to rotate. Since the belt brush 50 is angled to the stripes on the conveyor belt 1, it provides a better cleaning effect on conveyor belts with transverse raised stripes. Furthermore, the two support rollers lifting the conveyor belt and the lower pressure roller pressing it down open the transverse cracks on the lower side of the conveyor belt, facilitating the removal of ore particles from the cracks. At the same time, the bristles on the brush roller can extend into the transverse cracks, further sweeping away the ore particles within them.

Claims

1. A conveyor belt cleaning device, comprising an outer frame (10), a support roller (20), and a lower pressure roller (30), characterized in that... Two support rollers (20) for supporting the conveyor belt (1) are rotatably installed inside the outer frame (10). A pressure roller (30) is installed between the two support rollers (20) and is used to press down on the conveyor belt (1) so that the conveyor belt (1) bulges downward. It also includes a horizontal brush device, which is installed below the lower pressure roller (30), and the installation direction of the horizontal brush device forms an angle with the installation direction of the conveyor belt (1).

2. The conveyor belt cleaning device according to claim 1, characterized in that: The horizontal brush device is a brush roller, which is installed inside the outer frame (10) via a central shaft. The motor (60) is installed on the outer frame (10), and the output shaft of the motor (60) is connected to the central shaft of the brush roller.

3. The conveyor belt cleaning device according to claim 1, characterized in that: The horizontal brush device includes belt rollers (40) and belt brushes (50). The two belt rollers (40) are rotatably mounted inside the outer frame (10) via a central shaft, and the two belt rollers (40) are located at both ends of the width direction of the conveyor belt (1). The belt brushes (50) are fitted on the two belt rollers (40). The motor (60) is mounted on the outer frame (10), and the output shaft of the motor (60) is connected to the central shaft of one of the belt rollers (40) for transmission.

4. The conveyor belt cleaning device according to any one of claims 1 to 3, characterized in that: Inside the outer frame (10), support plates (13) are installed on both sides of the horizontal brush device, and the horizontal brush device is installed between the support plates (13) on both sides.

5. The conveyor belt cleaning device according to claim 1, characterized in that: The outer frame (10) has longitudinal slots (111) at the corresponding positions at both ends of the lower pressure roller (30). The lower pressure spindle (32) of the lower pressure roller (30) extends out of the slots (111) at both ends. The outer frame (10) has a pressure plate (80) installed on the upper side of the slot (111). The pressure plate (80) is threaded and screwed with a lower pressure screw (81). The lower pressure screw (81) abuts against the lower pressure spindle (32).

6. The conveyor belt cleaning device according to claim 2 or 3, characterized in that: Inside the outer frame (10), a toggle device (70) is installed on the lower side of the horizontal brush device. The toggle device (70) is used to toggle the bristles on the horizontal brush device.

7. The conveyor belt cleaning device according to claim 6, characterized in that: The actuating device (70) is a stop bar (71); in use, the bristles elastically sweep across the stop bar (71).

8. The conveyor belt cleaning device according to claim 6, characterized in that: The actuating device (70) includes a stop bar (71), on which multiple rows of comb teeth (72) are fixed. Adjacent comb teeth (72) are staggered. In use, the bristles elastically sweep across the comb teeth (72).

9. The conveyor belt cleaning device according to claim 1, characterized in that: The inner wall of the outer frame (10) has multiple inclined plates (14) installed on the lower side of the horizontal brush device, and the lower end of the inclined plates (14) forms a discharge port (15).

10. A mineral powder conveyor, characterized in that: The conveyor belt cleaning device as described in any one of claims 1 to 9 is installed, wherein the lower layer of the conveyor belt (1) of the mineral powder conveyor passes between the support roller (20) and the lower pressure roller (30), and the horizontal brush device is located below the conveyor belt (1).

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