Energy unloading and material blocking mechanism of belt conveyor

Abstract

The application discloses a belt conveyor energy unloading and material blocking mechanism, which comprises a main shaft, a wear-resistant pipe and a limiting device. The main shaft is installed below a belt return section of the belt conveyor and is perpendicular to a conveying direction. The wear-resistant pipe is sleeved on the main shaft, and the inner diameter of the wear-resistant pipe is larger than the outer diameter of the main shaft. The limiting device is axially limitedly installed on the main shaft and is arranged at both ends of the wear-resistant pipe. The application can block and unload the material on the surface of the belt before the first sweeper of the belt conveyor, reduce the direct impact on the first sweeper, and prolong the service life of the first sweeper.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor technology, and in particular to an energy-discharging and material-blocking mechanism for a belt conveyor. Background Technology

[0002] Belt conveyors are used for material transport. During the conveying process, due to the characteristics of the belt and the material, a significant amount of material often adheres to the belt surface. Therefore, it is necessary to install a cleaner on the return section of the belt for belt cleaning. When the material has a high moisture content or the belt is flushed with water, due to the surface tension of the water, lumps of material may also be mixed in with the material adhering to the belt surface. After entering the return section of the belt, these lumps, under the action of inertia, directly impact the surface of the cleaner in a manner similar to sandblasting. This causes significant damage to the cleaner, especially the first-stage cleaner, and the intensity of the damage increases with the material conveying distance and the hardness of the material.

[0003] The first-stage cleaner for belt conveyors typically uses polyurethane scrapers, which are relatively mature products, stable in use, and less prone to damaging the belt. In rare cases, wear-resistant alloy or ceramic cleaners are used, offering significantly longer service lives than polyurethane scrapers, but they have a much higher probability of damaging the belt, posing a greater risk to production safety. Therefore, these types of cleaners have a very low market share. Practical testing shows that polyurethane scrapers are sufficient for the first-stage cleaner of conventional coal conveyor belts, providing a service life of over one year. However, in mines, ironworks, and other environments where hard materials with large particle sizes are being transported, the service life of polyurethane scrapers drops drastically, requiring frequent maintenance and hindering stable production. Especially in conditions like gold and copper mines or those handling fine mineral powder, polyurethane scrapers can completely fail within hours.

[0004] In mining and ironmaking plants, where materials are hard and have large particle sizes, the service life and effectiveness of the first-stage sweeper directly affect the service life of subsequent sweepers. Therefore, while ensuring cleaning effectiveness, effectively and safely extending service life is crucial. There is an urgent need for a device that can block and de-energize materials adhering to the belt surface before the first-stage sweeper. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-dissipating and material-blocking mechanism for a belt conveyor, which solves the problems existing in the prior art. It can block and dissipate the material adhering to the belt surface before the first cleaner of the belt conveyor, reduce the direct impact on the first cleaner, and thus extend its service life.

[0006] To achieve the above objectives, the solution of the present invention is:

[0007] An energy-discharging and material-blocking mechanism for a belt conveyor includes a main shaft, a wear-resistant tube, and a limiting device. The main shaft is installed below the return section of the belt conveyor and is perpendicular to the conveying direction. The wear-resistant tube is sleeved on the main shaft, and the inner diameter of the wear-resistant tube is larger than the outer diameter of the main shaft. The limiting device is axially limited and installed on the main shaft, and is located at both ends of the wear-resistant tube.

[0008] The spindle is made of steel tubing.

[0009] The wear-resistant pipe includes a pipe body made of steel and a wear-resistant layer formed on the periphery of the pipe body using a high-chromium overlay welding process. The wear-resistant layer is composed of several overlay weld lines.

[0010] Preferably, after the wear-resistant layer is formed, the weld overlay is ground, and the gap between adjacent weld overlays is less than 3mm.

[0011] Preferably, the axial length of the wear-resistant layer is greater than the width of the belt, and both ends of the tube are exposed at both ends of the wear-resistant layer.

[0012] The inner wall of the wear-resistant tube is lubricated.

[0013] Preferably, the inner wall of the wear-resistant tube is provided with a plurality of concentric ring oil reservoirs arranged at equal intervals along the axial direction of the wear-resistant tube for storing lubricating grease.

[0014] The limiting device includes a limiting block that cooperates with the axial limiting of the main shaft, and a sliding plate installed on the side of the limiting block facing the wear-resistant tube; the limiting block is made of carbon steel; the sliding plate is made of ultra-high molecular weight polyethylene, and its surface facing the wear-resistant tube is provided with several discharge grooves extending in the vertical direction.

[0015] The energy-dissipating and material-blocking mechanism of the belt conveyor also includes a buffer device; the buffer device is installed at both ends of the main shaft, and the buffer device is set on both sides of the belt conveyor to realize the installation of the main shaft and provide space for the main shaft and wear-resistant tube to move in the direction away from the belt when they are impacted.

[0016] Preferably, the buffer device includes a mounting plate fixed relative to the side of the belt conveyor, a fixed block fixed to the side of the mounting plate, a movable rod that moves through the fixed block in a vertical direction, a movable block fixed below the movable rod, a spring sleeved on the movable rod with its lower end abutting the upper surface of the fixed block, a limiting ring fixed to the periphery of the movable rod and abutting the upper end of the spring, and a protective sleeve sleeved on the outer periphery of the spring and abutting the upper surface of the fixed block; the end of the main shaft is mounted on the movable block.

[0017] Preferably, the limiting ring is relatively fixed to the movable rod by a nut threaded to the movable rod and the elastic force of a spring; the side of the movable block is provided with a clamping member for clamping the end of the spindle, and a bolt for screwing in to abut against the circumferential surface of the spindle for locking is provided on the clamping member.

[0018] After adopting the above technical solution, the present invention has the following technical effects:

[0019] ① The wear-resistant tube sleeved on the main shaft can form a V-shaped angle with the belt to store materials and realize the "material feeding" function. It breaks away from the traditional belt scraping idea and realizes the belt cleaning function with a brand-new material blocking method. It also utilizes the non-concentric assembly of materials, wear-resistant tube and main shaft, buffer device and other multiple buffer structures to realize multiple energy absorption and buffering, effectively resisting the impact of materials on the energy unloading and material blocking mechanism and its subsequent cleaners, and improving the service life of the overall cleaning system.

[0020] ② When the main shaft is installed using a buffer device, the main shaft and wear-resistant tube can move away from the belt direction when the wear-resistant tube is impacted by the block material. This allows the block material to pass through the gap between the wear-resistant layer and the belt, avoiding the problem of the belt tearing due to prolonged obstruction of the material. This achieves the function of preventing damage to the belt and ensuring safe production. Attached Figure Description

[0021] Figure 1 This is a perspective view of a specific embodiment of the present invention;

[0022] Figure 2 This is a perspective view of a wear-resistant tube according to a specific embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional view of the spindle and wear-resistant tube in a specific embodiment of the present invention;

[0024] Figure 4 This is a perspective view of the limiting device according to a specific embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of the buffer device according to a specific embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram illustrating the working principle of a specific embodiment of the present invention. Figure 1 ;

[0027] Figure 7 This is a schematic diagram illustrating the working principle of a specific embodiment of the present invention. Figure 2 ;

[0028] Explanation of icon numbers:

[0029] 1----Spindle;

[0030] 2---Wear-resistant pipe; 21---Pipe body; 211--Oil reservoir; 22---Wear-resistant layer;

[0031] 3----Limiting device; 31---Limiting block; 311--Sleeve; 32---Slide plate; 321--Discharge chute;

[0032] 4----Buffer device; 41---Mounting plate; 42---Fixing block; 43---Moving rod; 44---Moving block; 45---Spring; 46---Limiting ring; 47---Sheath; 48---Nut; 49---Clamping component; 40---Bolt;

[0033] a----belt; b----adhesive material; c----sweeper; d---block material. Detailed Implementation

[0034] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of protection of the invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of the embodiments of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, or the orientation or positional relationship in which those skilled in the art are usually understood. It is only for the purpose of simplifying the description of the embodiments of the present invention, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0039] Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0043] Furthermore, this invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0044] refer to Figures 1 to 5 As shown, the present invention discloses an energy unloading and material blocking mechanism for a belt conveyor, including a main shaft 1, a wear-resistant tube 2, a limiting device 3, and a buffer device 4.

[0045] The main shaft 1 is installed below the return section of belt a of the belt conveyor and is perpendicular to the conveying direction;

[0046] Wear-resistant tube 2 is sleeved on spindle 1, and the inner diameter of wear-resistant tube 2 is larger than the outer diameter of spindle 1;

[0047] The limiting device 3 is axially limited and installed on the main shaft 1, and is located at both ends of the wear-resistant tube 2;

[0048] Both ends of the main shaft 1 are equipped with buffer devices 4. The buffer devices 4 are set on both sides of the belt conveyor to realize the installation of the main shaft 1 and provide space for the main shaft 1 and the wear-resistant tube 2 to move in the direction away from the belt a when they are impacted.

[0049] The following illustrates specific embodiments of the present invention.

[0050] The aforementioned main shaft is made of steel tubing and is used to install other accessories / components of the energy-dissipating and material-blocking mechanism, serving to support the wear-resistant tube 2.

[0051] See Figure 2 and Figure 3 The aforementioned wear-resistant pipe 2 includes a pipe body 21 made of steel and a wear-resistant layer 22 formed on the circumference of the pipe body 21 using a high-chromium surfacing welding process. Due to the limitations of existing surfacing welding processes, the width of the surfacing welding path is generally no more than 40 mm. Under this process condition, concentric ring-shaped or spiral surfacing welding patterns will be formed on the surface of the pipe body 21, that is, the wear-resistant layer 22 is composed of several surfacing welding patterns, making the surface of the wear-resistant layer 22 uneven. This is beneficial to increasing the contact area between the material and the wear-resistant layer 22, increasing the friction between the material and the wear-resistant layer 22, and thus facilitating the accumulation of material between the wear-resistant layer 22 and the belt a.

[0052] Furthermore, after the wear-resistant layer 22 is formed, the weld overlay is ground to make the surface smooth and control the unevenness of the weld overlay to within 3mm, that is, the gap between adjacent weld overlays is less than 3mm, so as to ensure material accumulation and prevent serious material escape. If the gap exceeds 3mm, an excessively large gap will be formed between the wear-resistant layer 22 and the belt a, which will exacerbate the problem of material escaping backward and fail to form an effective barrier. At the same time, the material escape phenomenon will make it more difficult to accumulate local materials, reducing the effectiveness of protecting the wear-resistant layer 22 with materials.

[0053] Meanwhile, the axial length of the wear-resistant layer 22 is greater than the width of the belt a, and the two ends of the tube 21 are exposed at the two ends of the wear-resistant layer 22 respectively. That is, a certain amount of base material is left at both ends of the wear-resistant tube 2 to ensure that the middle wear-resistant layer 22 will not fall off if it is worn through, thereby reducing potential safety hazards in production.

[0054] The inner wall of the wear-resistant tube 2 (that is, the inner wall of the tube body 21) is lubricated to reduce friction and wear between the wear-resistant tube 2 and the main shaft 1 when the wear-resistant tube 2 is deflected by force, so as to avoid deformation or even breakage caused by the reduced strength of both, especially the main shaft 1, after wear, and to prevent serious safety accidents.

[0055] Furthermore, the above-mentioned lubrication treatment can be achieved by polishing the inner wall of the wear-resistant tube 2 until it is smooth, or by applying lubricating grease. In this embodiment, the inner wall of the wear-resistant tube 2 is provided with a plurality of concentric ring oil reservoirs 211 arranged at equal intervals along the axial direction of the wear-resistant tube 2, which are used to place and store lubricating grease, further reducing friction and wear between the wear-resistant tube 2 and the spindle 1.

[0056] See Figure 4 The aforementioned limiting device 3 is mainly used to limit the axial displacement of the wear-resistant tube 2, so as to maintain its relative positional relationship with the belt a. In this embodiment, the aforementioned limiting device 3 includes a limiting block 31 that cooperates with the axial limiting of the main shaft 1, and a sliding plate 32 installed on the side of the limiting block 31 facing the wear-resistant tube 2; the limiting block 31 is made of carbon steel to ensure its strength and service life; the sliding plate 32 is made of ultra-high molecular weight polyethylene (UHMWPE), and its surface facing the wear-resistant tube 2 is provided with a plurality of vertically extending discharge grooves 321. The discharge grooves 321 form a plurality of groove-shaped gaps between the end of the wear-resistant tube 2 and the surface of the sliding plate 32, so that a small amount of material falling into the end of the wear-resistant tube 2 can be discharged downward from the discharge grooves 321 with the vibration generated when the wear-resistant tube 2 is impacted, thus avoiding the accumulation of material in the wear-resistant tube 2.

[0057] Furthermore, the aforementioned limiting block 31 is provided with a sleeve 311 fitted onto the spindle 1. The sleeve 311 is fixed to the spindle 1 by a pin to achieve axial limiting engagement between the limiting block 31 and the spindle 1.

[0058] See Figure 5 The aforementioned buffer device 4 adopts a spring-tensioned buffering method, including a mounting plate 41 fixed relative to the side of the belt conveyor, a fixing block 42 fixed to the side of the mounting plate 41, a movable rod 43 that moves vertically through the fixing block 42, a movable block 44 fixed below the movable rod 43, a spring 45 sleeved on the movable rod 43 with its lower end abutting against the upper surface of the fixing block 42, a limiting ring 46 fixed to the circumference of the movable rod 43 and abutting against the upper end of the spring 45, and a protective sleeve 47 sleeved on the outer circumference of the spring 45 and abutting against the upper surface of the fixing block 42; the end of the main shaft 1 is mounted on the movable block 44. See also Figure 7 When the main shaft 1 and wear-resistant tube 2 are impacted by the material, under the constraint of the movable rod 43, the main shaft 1 and wear-resistant tube 2 can move along the direction of the movable rod 43, thereby preventing the main shaft 1 and wear-resistant tube 2 from moving along the material conveying direction, reducing vibration in that direction, and improving the stability and reliability of the overall structure.

[0059] Furthermore, the aforementioned limiting ring 46 is relatively fixed to the movable rod 43 by means of a nut 48 threadedly connected to the movable rod 43 and the elastic force of the spring 45. The compression degree of the spring 45 can be adjusted by turning the nut 48, thereby controlling the stroke of the energy-releasing and material-blocking mechanism.

[0060] Meanwhile, the side of the aforementioned movable block 44 is provided with a clamping member 49 for clamping the end of the spindle 1, and a bolt 40 for screwing in to abut against the circumference of the spindle 1 for locking is provided on the clamping member 49.

[0061] The material blocking and energy dissipation principle of this invention is as follows:

[0062] See Figure 6 Because the wear-resistant tube 2 and the main shaft 1 are non-concentrically assembled, in actual use, the upper part of the wear-resistant tube 2 rests on the main shaft 1, and its outer wall is almost in contact with the belt a, forming a V-shaped angle. When the sticky material b moves with the belt a, some of it will be stored in the V-shaped angle, while the lower part of the wear-resistant tube 2 is suspended. When the belt a continues to run, when the outer wall of the wear-resistant tube 2 and the material left on it are impacted by the material, the material achieves the function of "material hitting material", which cleans the surface of the belt a by means of material removal and blocking, and absorbs and buffers the impact energy of the sticky material b on the energy-dissipating and material-blocking mechanism. This can extend the service life of the wear-resistant tube 2 and reduce the impact on the subsequent cleaner c.

[0063] The principle of the protective belt of this invention is as follows:

[0064] See Figure 7 Because there is a small gap between the energy-relieving and material-blocking mechanism (i.e., wear-resistant tube 2) and the belt, medium and fine particles of sticky material b can pass through without getting stuck; while for larger particles of block material d, the wear-resistant tube 2 will use the flexibility and rotation characteristics generated by the non-concentric assembly with the main shaft 1 to effectively buffer and squeeze out the block material d, preventing the subsequent material from being blocked for a long time and causing the belt a to tear.

[0065] Through the above scheme, the wear-resistant tube 2 fitted on the main shaft 1 can form a V-shaped angle with the belt a to store materials and realize the "material feeding" function. It breaks away from the traditional belt scraping idea and realizes the belt cleaning function with a brand-new material blocking method. It also utilizes the non-concentric assembly of materials, wear-resistant tube 2 and main shaft 1, buffer device 4 and other multiple buffer structures to realize multiple energy absorption and buffering, effectively resisting the impact of materials on the energy unloading and material blocking mechanism and its subsequent cleaners, and improving the service life of the overall cleaning system. At the same time, when the main shaft 1 is installed with buffer device 4, it can also realize the movement of main shaft 1 and wear-resistant tube 2 away from belt a when the wear-resistant tube 2 is impacted by block material d, so that block material d can pass through the gap between wear-resistant layer 2 and belt a, avoiding the problem of belt a tearing due to prolonged material obstruction, realizing the belt damage prevention function and ensuring safe production.

[0066] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A material unloading and blocking mechanism for a belt conveyor, characterized in that: Includes spindle, wear-resistant tube, limiting device and buffer device; The main shaft is installed below the return section of the belt conveyor and is perpendicular to the conveying direction; The wear-resistant tube is sleeved on the main shaft, and the inner diameter of the wear-resistant tube is larger than the outer diameter of the main shaft; the wear-resistant tube and the main shaft are non-concentrically assembled; the wear-resistant tube includes a tube body made of steel, and a wear-resistant layer formed on the circumference of the tube body by high chromium overlay welding process, the wear-resistant layer being composed of several overlay weld lines; The limiting device is axially limited and installed on the main shaft, and is located at both ends of the wear-resistant tube; The buffer device is installed at both ends of the main shaft. The buffer device is set on both sides of the belt conveyor to realize the installation of the main shaft and to provide space for the main shaft and wear-resistant tube to move in the direction away from the belt when they are impacted.

2. The energy-discharging and material-blocking mechanism for a belt conveyor as described in claim 1, characterized in that: The spindle is made of steel tubing.

3. The energy-discharging and material-blocking mechanism of the belt conveyor as described in claim 1, characterized in that: After the wear-resistant layer is formed, the weld overlay is ground, and the gap between adjacent weld overlays is less than 3mm.

4. The energy-discharging and material-blocking mechanism of the belt conveyor as described in claim 1, characterized in that: The axial length of the wear-resistant layer is greater than the width of the belt, and the two ends of the tube are exposed at both ends of the wear-resistant layer.

5. The energy-discharging and material-blocking mechanism for a belt conveyor as described in claim 1, characterized in that: The inner wall of the wear-resistant tube is lubricated; the inner wall of the wear-resistant tube is provided with a plurality of concentric ring oil reservoirs arranged at equal intervals along the axial direction of the wear-resistant tube for storing lubricating grease.

6. The energy-discharging and material-blocking mechanism of the belt conveyor as described in claim 1, characterized in that: The limiting device includes a limiting block that cooperates with the axial limiting of the main shaft, and a sliding plate installed on the side of the limiting block facing the wear-resistant tube; the limiting block is made of carbon steel; the sliding plate is made of ultra-high molecular weight polyethylene, and its surface facing the wear-resistant tube is provided with several discharge grooves extending in the vertical direction.

7. The energy-discharging and material-blocking mechanism for a belt conveyor as described in claim 1, characterized in that: The buffer device includes a mounting plate fixed to the side of the belt conveyor, a fixed block fixed to the side of the mounting plate, a movable rod that moves through the fixed block in the vertical direction, a movable block fixed below the movable rod, a spring sleeved on the movable rod with its lower end abutting the upper surface of the fixed block, a limiting ring fixed to the periphery of the movable rod and abutting the upper end of the spring, and a protective sleeve sleeved on the outer periphery of the spring and abutting the upper surface of the fixed block; the end of the main shaft is mounted on the movable block.

8. The energy-discharging and material-blocking mechanism for a belt conveyor as described in claim 7, characterized in that: The limiting ring is fixed relative to the movable rod by a nut threaded to the movable rod and the elastic force of a spring; the side of the movable block is provided with a clamping member for clamping the end of the spindle, and a bolt for screwing in to abut against the circumferential surface of the spindle for locking is provided on the clamping member.

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