Wear-resistant coal slipping pipe convenient to overhaul

Abstract

The utility model provides a wear-resisting type coal slipping pipe convenient to overhaul, which comprises at least one group of conveying units, each conveying unit comprises a vertical pipeline and an inclined pipeline, the top end of each inclined pipeline is communicated with the bottom end of the corresponding vertical pipeline, and the top ends of the vertical pipelines of two adjacent groups of conveying units are communicated with the bottom ends of the inclined pipelines. The inner wall of the upward side in the inclined pipeline is a coal receiving face, an access hole is formed in the coal receiving face, a mounting plate is arranged in the access hole, mounting rods are arranged on the end faces of the two sides of the mounting plate, and the ends, away from the mounting plate, of the mounting rods are hinged to the inner wall of the access hole. The inclined pipeline is used for delaying the falling speed of coal briquettes, prolonging the service life of the conveying belt, reducing the overhauling frequency of the conveying belt and guaranteeing the conveying efficiency of the coal briquettes; the mounting plate in the overhauling opening is turned over, so that the wear-resistant ceramic plate is quickly replaced and is convenient to assemble and disassemble, the operation time is shortened, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal transportation, in particular to a wear-resistant coal chute which is easy to repair. Background Art

[0002] A coal chute is a device used to transport coal, using gravity to transport coal from a high place to a low place. It is usually used in mining areas, coal bunkers, coal transportation systems and other places. A common coal chute consists of an inclined or vertical pipe or channel with a smooth inner wall to reduce friction and blockage caused by coal during transportation.

[0003] At present, the inclined coal chute is often composed of a single pipe. This type of coal chute has high transportation efficiency, but the coal falls quickly in this type of pipe. The high-speed moving coal blocks can easily damage the conveyor belt below the coal chute. Long-term use causes serious wear on the conveyor belt surface and even puncture of the conveyor belt. In addition, the high-speed moving coal blocks collide with each other, causing serious coal dust problems.

[0004] For example, Chinese patent CN 204489771 U discloses a self-repairing, wear-resistant coal chute, which includes a coal chute body and a plurality of baffles. The baffles are fixedly arranged with an inclination in the same direction along a coal descent chute on the inner wall of the coal chute body. Furthermore, the baffles are inclined in a direction opposite to the direction in which the coal chute descends.

[0005] In the above patent, multiple groups of partitions are set in the coal chute body, and a certain amount of coal blocks are stored in the partitions, so that the flowing coal blocks move on the surface of the coal blocks stored in the partitions, thereby avoiding the problem of coal blocks colliding and rubbing against the inner wall of the coal chute.

[0006] However, the collision between the flowing coal blocks and the stored coal blocks can easily generate coal powder dust, and the flowing coal blocks, due to their irregular appearance and size, can get stuck in the gaps between the stored coal blocks, easily causing the coal chute to be blocked.

[0007] Furthermore, as disclosed in Chinese patent CN 210739692 U, a kind of adhesive wear-resistant ceramic pulverized coal pipe and its elbow relate to the field of pulverized coal pipes, including an elbow pipe and a high molecular adhesive. The elbow pipe is composed of an outer steel shell and an inner lining wear-resistant layer. The inner lining wear-resistant layer is fixed to the inner wall of the outer steel shell by the high molecular adhesive. The inner lining wear-resistant layer is composed of multiple wear-resistant ceramic bricks.

[0008] In the above patent, wear-resistant ceramics are laid inside the pipeline to extend the service life of the pipeline and reduce the impact of coal blocks on the pipeline during coal transportation.

[0009] However, this closed pipeline is difficult to repair after the wear-resistant ceramic is damaged. It is often necessary to dismantle the faulty pipeline and then replace the wear-resistant ceramic, which makes the maintenance efficiency low and the maintenance cycle long.

[0010] Therefore, a coal chute structure that is easy to maintain and has a long service life is needed. Utility Model Content

[0011] The utility model provides a wear-resistant coal chute which is easy to maintain. The falling speed of coal blocks is slowed down by the inclined coal surface, thereby protecting the conveyor belt below the coal chute. At the same time, the wear-resistant ceramic plates damaged by the coal surface can be quickly replaced by utilizing the mounting plate structure, thereby improving the safety of high-altitude operations and the replacement efficiency of the wear-resistant ceramic plates, and reducing the impact of the replacement of the wear-resistant ceramic plates on the transportation of coal blocks.

[0012] The utility model provides a wear-resistant coal chute that is easy to maintain, comprising: at least one group of conveying units, wherein the conveying units include a vertical pipeline and an inclined pipeline, the two ends of the inclined pipeline are respectively connected to the vertical pipeline, an inspection port is provided on the coal receiving surface inside the inclined pipeline, a mounting plate is provided in the inspection port, the two ends of the mounting plate are rotatably connected to the inner wall of the inspection port, the mounting plate can be flipped relative to the inspection port, and the two sides of the mounting plate are respectively detachably connected to the first wear-resistant ceramic plate.

[0013] Preferably, positioning plates are provided on both outer walls of the mounting plate, a shock absorbing assembly is provided between the positioning plate and the mounting plate, and the side of the positioning plate away from the mounting plate is used for mounting the first wear-resistant ceramic plate.

[0014] Preferably, the shock absorbing assembly is composed of a plurality of elastic assemblies and a plurality of telescopic bolt assemblies, and each of the elastic assemblies and telescopic bolt assemblies is distributed on the outer walls on both sides of the mounting plate;

[0015] The telescopic bolt assembly includes a head, a rod, and a threaded portion. One end of the rod is connected to the head, and the other end is connected to the threaded portion. The threaded portion is provided with a sliding groove on an end surface close to one end of the rod. The end of the rod close to the threaded portion is slidably arranged in the sliding groove.

[0016] The sliding groove is provided with a baffle near one end of the rod, and the rod is provided with a stopper near one end of the sliding groove, and the stopper is provided between the baffle and the inner bottom surface of the sliding groove;

[0017] The surface of the mounting plate is uniformly distributed with a plurality of first threaded holes, each of which is used for threadedly connecting with the threaded portion of the telescopic bolt assembly;

[0018] A plurality of countersunk holes are evenly distributed on the surface of the positioning plate, and each countersunk hole is used to install the head of the telescopic bolt assembly.

[0019] Preferably, the elastic component includes a limiting tube, one end of which is connected to the surface of the mounting plate, and the other end is arranged toward the positioning plate. A spring is arranged in the limiting tube, and the end of the spring away from the mounting plate is connected to one side of the support plate, and a head is arranged on the other side of the support plate, and the head abuts against the surface of the positioning plate away from the end of the support plate.

[0020] Preferably, a plurality of second threaded holes are evenly distributed on the surface of the positioning plate, and each of the second threaded holes is used for connecting the first wear-resistant ceramic plate to the positioning plate with a bolt.

[0021] Preferably, the end surface of the inspection port is symmetrically provided with a sealing plate about its own center line, one end of the sealing plate is rotatably connected to the outer wall of the inspection port, and the other end is detachably connected to a fixing component, and the two sealing plates cooperate to close the gap between the inspection port and the two sides of the mounting plate;

[0022] The top end of the sealing plate and the fixing assembly are both arranged along the edge of the inspection opening.

[0023] Preferably, the fixing assembly includes a U-shaped groove, two groups of U-shaped groove openings are respectively facing the two sealing plates, one side of the U-shaped groove is installed on the outer wall of the inspection port, and the other side is provided with a third threaded hole;

[0024] A through hole is provided at the bottom end of the sealing plate, and the through hole cooperates with the third threaded hole for the U-shaped groove bolt to connect the sealing plate.

[0025] Preferably, the inner walls of the vertical pipe and the inclined pipe are both provided with a second wear-resistant ceramic plate.

[0026] Preferably, the adjacent vertical pipes and the inclined pipes are connected via flanges.

[0027] Preferably, an inspection door and an air lock are provided on the outer wall of one of the vertical pipes.

[0028] The working principle and beneficial effects of the utility model are as follows:

[0029] The utility model provides a wear-resistant coal chute that is easy to maintain, comprising: at least one group of conveying units, wherein the conveying units include a vertical pipe and an inclined pipe, the top end of the inclined pipe is connected to the bottom end of the vertical pipe, the top ends of the vertical pipes of two adjacent groups of conveying units are connected to the bottom ends of the inclined pipes, the inner wall of the inclined pipe facing upward is a coal receiving surface, an inspection port is provided in the coal receiving surface, a mounting plate is provided in the inspection port, mounting rods are provided on both side end surfaces of the mounting plate, the mounting rods are hinged to the inner wall of the inspection port at one end away from the mounting plate, and the two sides of the mounting plate are respectively used for mounting a first wear-resistant ceramic plate.

[0030] In the present invention, the coal chute is composed of one or more groups of conveying units, and different numbers of conveying units can be selected for splicing according to the height difference between the two conveyor belts. When the coal blocks are output from one side of the conveyor belt at the top, the coal blocks first enter the vertical pipe and then fall from the vertical pipe into the inclined pipe. After entering the inclined pipe, the coal blocks collide and rub against the coal-receiving surface. The coal blocks are buffered by the first wear-resistant ceramic plate arranged on the surface of the coal-receiving surface. After being affected by the impact of the coal blocks for a long time and the wear-resistant ceramic of the coal-receiving surface is damaged, a new wear-resistant ceramic plate is installed on the side of the mounting plate away from the inclined pipe, and then the mounting plate is rotated around two horizontally arranged mounting rods, so that the mounting plate drives the new first wear-resistant ceramic plate into the inclined pipe. When the mounting plate is flush with the inner wall of the inclined pipe, the old first wear-resistant ceramic plate is located on the outer wall of the inclined pipe. At this time, the old first wear-resistant ceramic plate is removed from the surface of the mounting plate to complete the replacement of the old wear-resistant ceramic plate.

[0031] Compared with the traditional coal chute structure, the inclined pipe with an inclined setting can slow down the falling speed of coal blocks when the coal blocks output by the coal chute fall on the surface of the lower conveyor belt, reducing the high-speed moving coal blocks from hitting the conveyor belt surface, causing the conveyor belt surface to wear or even break down, thereby extending the service life of the conveyor belt, reducing the frequency of conveyor belt maintenance, and ensuring the efficiency of coal block transportation.

[0032] Compared with the traditional coal chute structure with wear-resistant ceramics, the replacement of the first wear-resistant ceramic plate is more portable. The traditional coal chute is either a single pipe structure or a plurality of pipes spliced together. After the first wear-resistant ceramic plate in this coal chute structure is damaged, all the faulty pipes need to be dismantled and replaced. At the same time, due to the long length of the pipe, it is time-consuming and labor-intensive to replace the first wear-resistant ceramic plates at both ends, and the operation is inconvenient. The inspection port and mounting plate provided in this embodiment can be used to quickly and easily replace the faulty first wear-resistant ceramic plate. Since the overall length of the coal chute is large and the fault area is high from the ground, there is a certain risk during operation. The mounting plate provided in this embodiment can directly install a new first wear-resistant ceramic plate on its outer wall, and then dismantle the old first wear-resistant ceramic plate after flipping it over. It is easy to load and unload, reduces operation time, and improves operation safety.

[0033] Furthermore, the mounting plate that flips around the horizontal axis can be shaken on one side before replacing the first wear-resistant ceramic plate to shake off the pulverized coal on the surface of the first wear-resistant ceramic plate, thereby avoiding the pulverized coal in the mounting plate from spilling onto the operator when opening the mounting plate, causing safety risks, and further improving the efficiency of replacing the first wear-resistant ceramic plate and operational safety.

[0034] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0035] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 This is a schematic diagram of the structure of the conveying unit of the present utility model;

[0038] Figure 2 This is a schematic diagram of the installation of the mounting plate of the utility model;

[0039] Figure 3 This is a schematic diagram of the inclined pipeline structure of the present utility model;

[0040] Figure 4 This is a schematic diagram of the installation of the telescopic bolt assembly of the present utility model;

[0041] Figure 5 This is a schematic structural diagram of the telescopic bolt assembly of the present utility model;

[0042] Figure 6 This is a schematic diagram of the installation of the limit tube of the utility model;

[0043] Figure 7 This is a schematic diagram of the installation of the sealing plate of the present invention;

[0044] Figure 8 This is a schematic diagram of the installation of the inspection door of the present invention.

[0045] Among them, 1-vertical pipe; 2-inclined pipe; 3-inspection port; 4-mounting plate; 5-first wear-resistant ceramic plate; 6-mounting rod; 7-positioning plate; 8-head; 9-rod; 10-threaded part; 11-sliding groove; 12-baffle; 13-stopper; 14-first threaded hole; 15-countersunk hole; 16-limiting tube; 17-spring; 18-butt plate; 19-butt head; 20-second threaded hole; 21-sealing plate; 22-U-shaped groove; 23-third threaded hole; 24-through hole; 25-second wear-resistant ceramic plate; 26-flange; 27-inspection door; 28-air lock. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0047] Example 1

[0048] See also Figures 1-8 A wear-resistant coal chute that is easy to maintain includes: at least one group of conveying units, the conveying unit includes a vertical pipe 1 and an inclined pipe 2, the two ends of the inclined pipe 2 are respectively connected to the vertical pipe 1, and an inspection port 3 is provided on the coal receiving surface inside the inclined pipe 2. A mounting plate 4 is provided in the inspection port 3, and the two ends of the mounting plate 4 are rotatably connected to the inner wall of the inspection port 3. The mounting plate 4 can be flipped relative to the inspection port 3, and the two sides of the mounting plate 4 are respectively detachably connected to the first wear-resistant ceramic plate 5.

[0049] The working principle and beneficial effects of the above embodiment are as follows:

[0050] The coal chute is composed of one or more groups of conveying units, and different numbers of conveying units can be selected for splicing according to the height difference between the two conveyor belts. When the coal blocks are output from one side of the conveyor belt at the top, the coal blocks first enter the vertical pipe 1, and then fall from the vertical pipe 1 into the inclined pipe 2. After entering the inclined pipe 2, the coal blocks collide and rub against the coal receiving surface, and are buffered by the first wear-resistant ceramic plate 5 set on the surface of the coal receiving surface. After being affected by the impact of the coal blocks for a long time, the wear-resistant ceramic of the coal receiving surface is damaged. A new wear-resistant ceramic plate is installed on the side of the mounting plate 4 away from the inclined pipe 2, and then the mounting plate 4 is rotated around two horizontally arranged mounting rods 6 so that the mounting plate 4 drives the new first wear-resistant ceramic plate 5 into the inclined pipe 2. When the mounting plate 4 is flush with the inner wall of the inclined pipe 2, the old first wear-resistant ceramic plate 5 is located on the outer wall of the inclined pipe 2. At this time, the old first wear-resistant ceramic plate 5 is removed from the surface of the mounting plate 4 to complete the replacement of the old wear-resistant ceramic plate.

[0051] Compared with the traditional coal chute structure, the inclined pipe 2 is arranged obliquely and can slow down the falling speed of coal blocks when the coal blocks output by the coal chute fall on the surface of the lower conveyor belt, thereby reducing the high-speed moving coal blocks from hitting the conveyor belt surface, causing the conveyor belt surface to be worn or even punctured, thereby extending the service life of the conveyor belt, reducing the frequency of conveyor belt maintenance, and ensuring the efficiency of coal block transportation.

[0052] Compared with the traditional coal chute structure with wear-resistant ceramics, the replacement of the first wear-resistant ceramic plate 5 is more portable. The traditional coal chute is either a single pipe structure or a plurality of pipes spliced together. After the first wear-resistant ceramic plate 5 in this coal chute structure is damaged, all the faulty pipes need to be dismantled and replaced. At the same time, due to the long length of the pipe, it is time-consuming and labor-intensive to replace the first wear-resistant ceramic plates 5 at both ends, and the operation is inconvenient. The inspection port 3 and the mounting plate 4 provided in this embodiment can be used to quickly and easily replace the faulty first wear-resistant ceramic plate 5. Since the overall length of the coal chute is large and the fault area is high from the ground, there is a certain risk during operation. The mounting plate 4 provided in this embodiment can directly install a new first wear-resistant ceramic plate 5 on its outer wall, and then dismantle the old first wear-resistant ceramic plate 5 after flipping it over. The loading and unloading is convenient, the operation time is reduced, and the safety of the operation is improved.

[0053] Furthermore, the mounting plate 4 flipped around the horizontal axis can be shaken on one side before replacing the first wear-resistant ceramic plate 5 to shake off the pulverized coal on the surface of the first wear-resistant ceramic plate 5, thereby avoiding the pulverized coal in the mounting plate 4 from spilling onto the operator when opening the mounting plate 4, causing safety risks, and further improving the efficiency of replacing the first wear-resistant ceramic plate 5 and the safety of the operation.

[0054] Example 2

[0055] See also Figures 1-8 Positioning plates 7 are provided on the outer walls of both sides of the mounting plate 4, and a shock-absorbing component is provided between the positioning plate 7 and the mounting plate 4. The side of the positioning plate 7 away from the mounting plate 4 is used to install the first wear-resistant ceramic plate 5.

[0056] The working principle and beneficial effects of the above embodiment are as follows:

[0057] One side of the positioning plate 7 is used to install the first wear-resistant ceramic plate 5, and the other side is connected to the mounting plate 4 through a shock-absorbing assembly. When the coal block falls from the vertical pipe 1 into the coal-receiving surface, the coal block hits the first wear-resistant ceramic plate 5. The first wear-resistant ceramic plate 5 transfers the impact force to the positioning plate 7, and further resists the impact through elastic deformation of the shock-absorbing assembly.

[0058] On the one hand, the positioning plate 7 is used to share the impact of the coal block on the first wear-resistant ceramic plate 5, avoiding the bottom surface of the first wear-resistant ceramic plate 5 being suspended in the air and crushed by the coal block. On the other hand, the shock-absorbing component can reduce the impact of the coal block, reduce the pulverized coal and debris generated by the coal block impact, protect the first wear-resistant ceramic plate 5, and reduce the noise generated by the coal block impact, thereby achieving the purpose of shock absorption and noise reduction.

[0059] Example 3:

[0060] See also Figures 1-8, the shock absorbing assembly is composed of a plurality of elastic components and a plurality of telescopic bolt assemblies, and each of the elastic components and telescopic bolt assemblies is distributed on the outer walls on both sides of the mounting plate 4;

[0061] The telescopic bolt assembly includes a head 8, a rod 9, and a threaded portion 10. One end of the rod 9 is connected to the head 8, and the other end is connected to the threaded portion 10. The threaded portion 10 is provided with a sliding groove 11 on an end surface close to one end of the rod 9. The end of the rod 9 close to the threaded portion 10 is slidably arranged in the sliding groove 11.

[0062] The sliding groove 11 is provided with a baffle 12 at one end close to the rod 9, and the rod 9 is provided with a stopper 13 at one end close to the sliding groove 11. The stopper 13 is provided between the baffle 12 and the inner bottom surface of the sliding groove 11;

[0063] The surface of the mounting plate 4 is uniformly distributed with a plurality of first threaded holes 14 , each of which is used to threadably connect the threaded portion 10 of the telescopic bolt assembly;

[0064] A plurality of countersunk holes 15 are evenly distributed on the surface of the positioning plate 7 , and each of the countersunk holes 15 is used to install the head 8 of the telescopic bolt assembly.

[0065] The working principle and beneficial effects of the above embodiment are as follows:

[0066] The elastic component and the telescopic bolt assembly cooperate to relieve the force of the positioning plate 7 on the first wear-resistant ceramic plate 5 after the coal block hits it. When the coal block hits the first wear-resistant ceramic plate 5 and causes the positioning plate 7 to move toward the mounting plate 4, the head 8 of the telescopic bolt assembly drives the rod 9 to move in the sliding groove 11, and the elastic component is compressed.

[0067] The countersunk hole 15 is used to prevent the head 8 of the telescopic bolt assembly from protruding from the surface of the positioning plate 7, causing damage to the first wear-resistant ceramic plate 5. The baffle 12 set at the notch of the sliding groove 11 cooperates with the block 13 to prevent the positioning plate 7 from being affected by the elastic force of the elastic component, causing the rod 9 of the telescopic bolt assembly to fall off from the sliding groove 11. The telescopic bolt assembly can be used to install the positioning plate 7 on the surface of the mounting plate 4, and at the same time, the elastic component can be compressed to achieve buffering effect after the positioning plate 7 is subjected to force.

[0068] Example 4:

[0069] See also Figures 1-8The elastic component includes a limiting tube 16, one end of which is connected to the surface of the mounting plate 4, and the other end is arranged toward the positioning plate 7. A spring 17 is arranged in the limiting tube 16, and the end of the spring 17 away from the mounting plate 4 is connected to one side of the abutment plate 18, and the other side of the abutment plate 18 is provided with a head 19, and the end of the head 19 away from the abutment plate 18 abuts against the surface of the positioning plate 7.

[0070] The working principle and beneficial effects of the above embodiment are as follows:

[0071] When the positioning plate 7 is affected by the first wear-resistant ceramic plate 5 and moves closer to the mounting plate 4, the positioning plate 7 pushes the abutment 19 to move toward the limiting tube 16, and at the same time drives the abutment 18 to compress the spring 17 in the limiting tube 16, causing the spring 17 to undergo elastic deformation. The spring 17 absorbs kinetic energy, and the impact on the positioning plate 7 and the first wear-resistant ceramic plate 5 is converted into the internal energy of the spring 17. The process of energy storage and release of the spring 17 reduces the direct impact on the system, thereby achieving shock absorption and noise reduction, and further extending the service life of the positioning plate 7 and the first wear-resistant ceramic plate 5.

[0072] Example 5

[0073] See also Figures 1-8 A plurality of second threaded holes 20 are evenly distributed on the surface of the positioning plate 7 , and each of the second threaded holes 20 is used for the first wear-resistant ceramic plate 5 to be bolted to the positioning plate 7 .

[0074] The working principle and beneficial effects of the above embodiment are as follows:

[0075] When loading and unloading the first wear-resistant ceramic plate 5, the first wear-resistant ceramic plate 5 is placed on the surface of the positioning plate 7, and the bolts are passed through the mounting holes on the surface of the first wear-resistant ceramic plate 5 and threadedly connected with the second threaded holes 20, thereby realizing the loading and unloading of the first wear-resistant ceramic plate 5.

[0076] Example 6

[0077] See also Figures 1-8 The end surface of the inspection port 3 is symmetrically provided with a sealing plate 21 about its own center line. One end of the sealing plate 21 is rotatably connected to the outer wall of the inspection port 3, and the other end is detachably connected to a fixing component. The two sealing plates 21 cooperate to close the gap between the inspection port 3 and the mounting plate 4 on both sides.

[0078] The top end of the sealing plate 21 and the fixing assembly are both arranged along the edge of the inspection opening 3 .

[0079] The working principle and beneficial effects of the above embodiment are as follows:

[0080] When replacing the first wear-resistant ceramic plate 5, release the connection between the bottom end of the sealing plate 21 and the fixing assembly, and push the sealing plate 21 to both sides so that the sealing plate 21 opens outward around the hinge at the top, thereby releasing the obstruction of the sealing plate 21 on the mounting plate 4. The first wear-resistant ceramic plate 5 can be replaced by flipping the mounting plate 4. After the first wear-resistant ceramic plate 5 is replaced, the sealing plate 21 is reset, and the bottom end of the sealing plate 21 is fixed using the fixing assembly.

[0081] When the bottom end of the sealing plate 21 is fixed in the fixing assembly, the sealing plate 21 can close the gap between the inspection port 3 and the mounting plate 4, preventing pulverized coal from falling from the gap during coal block transportation, causing environmental pollution, and at the same time improving the efficiency of loading and unloading the mounting plate 4.

[0082] Example 7

[0083] See also Figures 1-8 The fixing assembly includes a U-shaped groove 22, and the openings of the two groups of U-shaped grooves 22 are respectively facing the two sealing plates 21. One side of the U-shaped groove 22 is installed on the outer wall of the inspection port 3, and the other side is provided with a third threaded hole 23;

[0084] A through hole 24 is provided at the bottom end of the sealing plate 21 , and the through hole 24 cooperates with the third threaded hole 23 for the U-shaped groove 22 to be bolted to the sealing plate 21 .

[0085] The working principle and beneficial effects of the above embodiment are as follows:

[0086] When the bottom end of the sealing plate 21 needs to be fixed, the bottom end of the sealing plate 21 is moved toward the U-shaped groove 22, and the bottom end of the sealing plate 21 is placed in the opening of the U-shaped groove 22. The bolts are passed through the third threaded hole 23 and the through hole 24 to fix the bottom end of the sealing plate 21 with the bolts.

[0087] The fixing assembly has a simple structure and is efficiently installed. The bottom end of the sealing plate 21 is fixed by bolts to prevent the sealing plate 21 from falling off from the outside of the gap between the mounting plate and the inspection port 3. At the same time, it is easy to disassemble, further improving the efficiency of replacing the first wear-resistant ceramic plate 5.

[0088] Example 8

[0089] See also Figures 1-8 The inner walls of the vertical pipe 1 and the inclined pipe 2 are both provided with a second wear-resistant ceramic plate 25.

[0090] The working principle and beneficial effects of the above embodiment are as follows:

[0091] The vertical track and the inclined pipe 2 are all paved with second wear-resistant ceramic plates 25 except the coal-receiving surface. The probability of the second wear-resistant ceramic plates 25 of the vertical track and the inclined pipe 2 except the coal-receiving surface being in contact with coal is low.

[0092] The second wear-resistant ceramic plate 25 is used to resist the flying coal blocks, protect the inner wall of the coal chute, and extend the service life of the coal chute. For the coal receiving surface with high frequency collision, the portable and replaceable first wear-resistant ceramic plate 5 is used.

[0093] Example 9:

[0094] See also Figures 1-8 The adjacent vertical pipes 1 and the inclined pipes 2 are connected by flanges 26.

[0095] The working principle and beneficial effects of the above embodiment are as follows:

[0096] The adjacent vertical pipes 1 and inclined pipes 2 are connected via flanges 26, and the length of the coal chute can be freely spliced.

[0097] Example 10

[0098] See also Figures 1-8 An inspection door 27 and an air lock 28 are provided on the outer wall of one of the vertical pipes 1 .

[0099] The working principle and beneficial effects of the above embodiment are as follows:

[0100] The inspection door 27 is used to observe the blockage of coal blocks in the vertical pipeline 1 and the operation of the air lock 28.

[0101] Among them, as disclosed in Chinese patent CN219688790U, there is a new type of coal bunker entrance air lock 28 device with an electric-driven weighted hammer. The air lock 28 is a conventional device of the coal conveying system, which is used to reduce dust during coal conveying in the coal chute. Therefore, it will not be described in detail here.

[0102] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A wear-resistant coal chute that is easy to maintain, characterized in that: include: At least one group of conveying units, the conveying unit comprising a vertical pipeline (1) and an inclined pipeline (2), the two ends of the inclined pipeline (2) being respectively connected to the vertical pipeline (1), an inspection port (3) being provided on the coal receiving surface inside the inclined pipeline (2), a mounting plate (4) being provided inside the inspection port (3), the two ends of the mounting plate (4) being rotatably connected to the inner wall of the inspection port (3), the mounting plate (4) being capable of flipping relative to the inspection port (3), and first wear-resistant ceramic plates (5) being detachably connected to both sides of the mounting plate (4).

2. The wear-resistant coal chute that is easy to maintain as claimed in claim 1, characterized in that: Positioning plates (7) are provided on the outer walls of both sides of the mounting plate (4), a shock-absorbing assembly is provided between the positioning plate (7) and the mounting plate (4), and the side of the positioning plate (7) away from the mounting plate (4) is used for mounting the first wear-resistant ceramic plate (5).

3. The wear-resistant coal chute that is easy to maintain as claimed in claim 2, characterized in that: The shock-absorbing assembly is composed of a plurality of elastic assemblies and a plurality of telescopic bolt assemblies, and each of the elastic assemblies and telescopic bolt assemblies is distributed on the outer walls of both sides of the mounting plate (4); The telescopic bolt assembly comprises a head (8), a rod (9), and a threaded portion (10); one end of the rod (9) is connected to the head (8), and the other end is connected to the threaded portion (10); a sliding groove (11) is provided on an end surface of the threaded portion (10) close to one end of the rod (9); and the end of the rod (9) close to the threaded portion (10) is slidably arranged in the sliding groove (11); The sliding groove (11) is provided with a baffle (12) at one end close to the rod (9), and the rod (9) is provided with a stopper (13) at one end close to the sliding groove (11), and the stopper (13) is provided between the baffle (12) and the inner bottom surface of the sliding groove (11); A plurality of first threaded holes (14) are evenly distributed on the surface of the mounting plate (4), and each of the first threaded holes (14) is used for threadedly connecting the threaded portion (10) of the telescopic bolt assembly; The surface of the positioning plate (7) is evenly distributed with a plurality of countersunk holes (15), and each of the countersunk holes (15) is used to install the head (8) of the telescopic bolt assembly.

4. The wear-resistant coal chute that is easy to maintain as claimed in claim 3, characterized in that: The elastic component includes a limiting tube (16), one end of which is connected to the surface of the mounting plate (4), and the other end is arranged toward the positioning plate (7). A spring (17) is arranged in the limiting tube (16), and the end of the spring (17) away from the mounting plate (4) is connected to one side of the abutting plate (18). The other side of the abutting plate (18) is provided with a butt head (19), and the end of the butt head (19) away from the abutting plate (18) abuts against the surface of the positioning plate (7).

5. The wear-resistant coal chute that is easy to maintain as claimed in claim 4, characterized in that: A plurality of second threaded holes (20) are evenly distributed on the surface of the positioning plate (7), and each of the second threaded holes (20) is used for the first wear-resistant ceramic plate (5) to be bolted to the positioning plate (7).

6. The wear-resistant coal chute that is easy to maintain as claimed in claim 5, characterized in that: The end surface of the inspection port (3) is symmetrically provided with a sealing plate (21) about its own center line, one end of the sealing plate (21) is rotatably connected to the outer wall of the inspection port (3), and the other end is detachably connected to a fixing component, and the two sealing plates (21) cooperate to close the gap between the inspection port (3) and the mounting plate (4). The top end of the sealing plate (21) and the fixing assembly are both arranged along the edge of the inspection opening (3).

7. The wear-resistant coal chute that is easy to maintain as claimed in claim 6, characterized in that: The fixing assembly includes a U-shaped groove (22), two groups of the U-shaped grooves (22) openings facing the two sealing plates (21) respectively, one side of the U-shaped groove (22) is mounted on the outer wall of the inspection opening (3), and the other side is provided with a third threaded hole (23); A through hole (24) is provided at the bottom end of the sealing plate (21), and the through hole (24) cooperates with the third threaded hole (23) and is used for the U-shaped groove (22) to be bolted to the sealing plate (21).

8. The wear-resistant coal chute that is easy to maintain as claimed in claim 7, characterized in that: The inner walls of the vertical pipe (1) and the inclined pipe (2) are both provided with a second wear-resistant ceramic plate (25).

9. The wear-resistant coal chute that is easy to maintain as claimed in claim 8, characterized in that: The adjacent vertical pipes (1) and the inclined pipes (2) are connected via flanges (26).

10. The wear-resistant coal chute that is easy to maintain as claimed in claim 9, characterized in that: An inspection door (27) and an air lock (28) are provided on the outer wall of one of the vertical pipes (1).

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