Mine scraper conveyor with damp-proof sticky material function

Abstract

This invention belongs to the technical field of mining conveyors, specifically a mining scraper conveyor with anti-wet and sticky material function. It includes: pusher plates, each with chains on both sides, with adjacent pusher plates and chains forming a central storage area; push rods, arranged in multiple rows along the conveying direction on the outer side of the chains, with equal spacing between adjacent rows, and the push rods dividing the area between adjacent pusher plates into multiple lateral storage areas; lateral hoppers, located directly above the lateral storage areas, used to introduce a first type of coal block with similar length, width, and thickness into the lateral storage areas, with the maximum length of the first type of coal block being less than the distance between adjacent push rods; and a central hopper, located directly above the central storage area, capable of introducing coal powder and a second type of coal block into the central storage area. This invention, through the arrangement of the conveyed coal, automatically removes wet and sticky materials from the conveyor during the conveying process.

Description

Technical Field

[0001] This invention relates to the field of mining conveyor technology; specifically, this invention relates to a mining scraper conveyor with the function of preventing wet and sticky materials. Background Technology

[0002] Scraper conveyors, as mining conveying machinery, are widely used for transporting coal blocks. To suppress dust at coal mining faces, spraying is often used. However, fine coal fragments and dust, when wetted, easily adhere to the scraper conveyor. Over time, this buildup thickens, increasing resistance during transport and causing jams. This typically requires stopping the conveyor and manually washing it with a high-pressure water gun, increasing worker workload and reducing efficiency. Existing technologies include improvements to scraper conveyors to enhance their ability to prevent wet and sticky materials.

[0003] For example, prior art with publication number CN115140523A provides a scraper conveyor for coal mining faces, including a base plate, side mounting plates, transmission rollers, a drive motor, a top support plate, a bottom support plate, and an air bladder. This invention belongs to the technical field of coal conveying equipment. During equipment maintenance, an air pump can be used to inflate the air bladder on the top support plate, thereby peeling off coal chunks and coal powder adhering to the top support plate. The peeled coal can then be conveyed out using a scraper. When the air bladder deflates, the released gas flows into a cleaning air pipe. The gas flowing out of the cleaning air pipe can blow off coal adhering to the sprocket, cleaning the sprocket and preventing the sprocket from accumulating a large amount of coal after prolonged use, which could lead to equipment jamming.

[0004] The aforementioned existing technology, which utilizes the expansion of airbags to disperse wet and sticky materials and then combines this with airflow to blow the materials off, has several drawbacks. Setting airbags at the bottom of the conveyor trough affects the strength of the trough and increases resistance during material feeding. Furthermore, the handling of wet and sticky materials still requires the machine to be stopped and the machine to be unloaded. In addition, the internal working environment of the conveyor is complex and highly unpredictable; adding too much to the internal structure of the conveyor would affect the stability of the equipment's operation, hinder daily maintenance, and increase operating costs. Summary of the Invention

[0005] In view of this, the present invention provides a mining scraper conveyor with anti-wet and anti-sticky material function, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0006] To achieve the aforementioned objectives, the present invention provides a mine scraper conveyor with anti-wet and anti-sticking material function, comprising:

[0007] The pusher plate has chains on both sides, and two adjacent pusher plates, together with two chains, form a central storage area;

[0008] Push rods are arranged in multiple rows along the conveying direction on the outer side of the chain. The spacing between two adjacent rows of push rods is the same, and the push rods divide the area between two adjacent push plates into multiple lateral storage areas.

[0009] The side hopper, located directly above the side storage area, is used to introduce a first type of coal block with similar length, width, and thickness into the side storage area, and the maximum length of the first type of coal block is less than the distance between two adjacent push rods;

[0010] The central hopper, located directly above the central storage area, is capable of introducing pulverized coal and a second type of coal block into the central storage area. The second type of coal block is any coal block other than the first type mentioned above.

[0011] The top of the central hopper is provided with two feed inlets, one for pulverized coal and the other for lumps of coal, which are distributed in a front-to-back manner.

[0012] The rotating plate is installed in the middle hopper via a rotating shaft. The two ends of the rotating plate are located in the middle-lower feed port and the middle-second feed port, respectively. Under its own weight, the rotating plate can block the middle-lower feed port and keep the middle-second feed port open, so that the middle hopper can give priority to providing the middle storage area with the second type of coal.

[0013] Optionally, in a mining scraper conveyor with anti-wet and anti-sticky material function as described above, a screening trough with a downward-sloping front end is also included. The screening trough is provided with a first screen plate and a second screen plate distributed vertically. A first guide plate is provided between the first screen plate and the second screen plate. Circular screening holes are uniformly provided on the first screen plate. The distance between the first guide plate and the second screen plate is adapted to the outer diameter of the circular screening holes. A first channel and a second channel for the second type of coal to enter the middle hopper are formed above the first screen plate and between the first guide plate and the second screen plate, respectively. The rear end of the first guide plate is an outward-sloping surface. The lateral side of the screening trough 11 extends upward from the top of the second screen plate and arches outward corresponding to the area where the first guide plate is located to form a lateral channel for the first type of coal to enter the lateral hopper. A third channel for coal powder to enter the middle feed port is formed between the inner bottom wall of the screening trough and the second screen plate.

[0014] In the aforementioned mining scraper conveyor with anti-wet and anti-sticky material function, optionally, the middle hopper includes a top part with a circular structure. The inner cavity of the top part includes an upper cavity and a lower cavity. The lower cavity is provided with a fourth channel whose rear end is connected to the second channel, and the front end of the fourth channel is connected to the middle second discharge port. The rear side of the bottom of the upper cavity is provided with a middle notch that is connected to the fourth channel, and the two sides of the bottom of the upper cavity are provided with a fifth channel that is connected to the side hopper. The upper cavity is provided with a sweeping plate that can sweep coal blocks in the upper cavity into the fifth channel. The top end of the sweeping plate is connected to a motor installed at the top of the middle hopper.

[0015] In the aforementioned mining scraper conveyor with anti-wet and anti-sticking material function, optionally, the two side walls of the upper cavity are respectively provided with a first arc-shaped guide groove and a second arc-shaped guide groove, a partition is provided in the middle of the outlet of the first channel, the rear end slots of the first arc-shaped guide groove and the second arc-shaped guide groove are respectively connected to the two side areas of the front end outlet of the first channel located on the partition, the rear end slots of the first arc-shaped guide groove and the second arc-shaped guide groove are respectively located at the front end and the rear end of the two fifth channels, the first arc-shaped guide groove and the second arc-shaped guide groove are both configured to be inclined downward at the front end, and the height of the first arc-shaped guide groove and the second arc-shaped guide groove is greater than that of the sweeping plate.

[0016] In the aforementioned mining scraper conveyor with anti-wet and anti-sticky material function, optionally, the bottom outlet of the lateral hopper is divided into sub-material chambers that correspond one-to-one with the lateral storage areas between two adjacent push plates, and the sub-material chambers are stepped in shape with increasing height from front to back. A baffle that can open or close the bottom outlet of the sub-material chamber is inserted into the side of the lateral hopper, and a second guide plate with its rear end inclined downward is provided inside the lateral hopper, and the rear end of the second guide plate is located directly above the top inlet of the last sub-material chamber.

[0017] In the aforementioned mining scraper conveyor with anti-wet and anti-sticky material function, optionally, a transverse rod is rotatably connected to the rear end of the baffle, and a longitudinal rod is slidably sleeved at the end of the transverse rod away from the baffle. The longitudinal rod rotates outward by 90°, causing the baffle to move out of the bottom of the sub-material chamber and opening the sub-material chamber. The longitudinal rod is L-shaped. Top rods are fixedly installed on both sides of the top of the pusher plate. When the top rod passes the bottom transverse part of the longitudinal rod, it drives the longitudinal rod to rotate outward by 90°. The surface of the longitudinal rod is provided with a spiral groove. A sleeve rod that can be raised and lowered and sleeved outside the longitudinal rod is installed on the middle hopper. A slider that slides in cooperation with the spiral groove is fixedly installed inside the sleeve rod. A spring is connected to the bottom of the sleeve rod. When the longitudinal rod drives the baffle to open the sub-material chamber, the sleeve rod moves upward and stretches the spring.

[0018] In the aforementioned mining scraper conveyor with anti-wet and anti-sticking material function, optionally, a lateral insert plate is fixedly connected to the sleeve rod and inserted into the lateral channel from bottom to top, and when the sleeve rod is moved upward to the highest position, the lateral insert plate blocks the outlet of the lateral channel.

[0019] In the aforementioned mining scraper conveyor with anti-wet and anti-sticking material function, optionally, a middle insert plate is inserted into the rear end of the top portion corresponding to the outlet of the first channel. A connecting rod that is fixedly connected to the top end and the top end of the sleeve rod is fixedly connected to the outer side of the top surface of the middle insert plate. When the sleeve rod is in the highest position, the middle insert plate blocks the first channel.

[0020] In the aforementioned mining scraper conveyor with anti-wet and anti-sticking material function, optionally, the first screen plate and the second screen plate are fixedly connected by a lifting plate, the lifting plate is slidably arranged on the side wall of the screening trough, and the lifting plate is connected to a vibration motor.

[0021] In the aforementioned mining scraper conveyor with anti-wet and anti-sticking material function, optionally, a feeding hopper is connected to the rear end of the screening trough, a frame is connected to the bottom of the feeding hopper, the side hopper is fixedly installed on the frame, and the middle hopper is fixedly connected to the side hopper.

[0022] This invention relates to a mining scraper conveyor with anti-wet and sticky material function. By setting up a lateral storage area and a central storage area, and by adding relatively rounded first-type coal blocks to the lateral storage area, the first-type coal blocks cover the sidewalls of the conveyor trough during transport. Through effective impact and scraping, the wet and sticky material on the sidewalls is effectively removed. Simultaneously, by preferentially adding a second type of coal block to the central storage area, the coal blocks in the central storage area are located at the bottom of the coal powder and directly contact the bottom wall of the conveyor trough, effectively removing the wet and sticky material from the bottom wall. In summary, this application utilizes the lumpy coal transported by the conveyor itself to automatically remove wet and sticky material inside the conveyor trough. The design concept is novel, ensuring conveying efficiency while achieving the function of self-cleaning wet and sticky material, with outstanding results. Attached Figure Description

[0023] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 For the present invention Figure 1 Enlarged view at point B in the middle;

[0027] Figure 4 For the present invention Figure 3 Enlarged view at point C;

[0028] Figure 5 This is a schematic diagram of the structure of the central hopper of the present invention;

[0029] Figure 6 For the present invention Figure 5 A sectional view;

[0030] Figure 7 For the present invention Figure 5 Internal diagram;

[0031] Figure 8 This is a partial cross-sectional view of the screening tank of the present invention;

[0032] Figure 9 This is a schematic diagram of the side insert plate and the middle insert plate of the present invention;

[0033] Figure 10 This is a partial cross-sectional view of the side hopper of the present invention;

[0034] Figure 11 This is a schematic diagram of the slider of the present invention.

[0035] Reference numerals: 1-Pusher plate; 2-Chain; 3-Central storage area; 4-Push rod; 5-Side storage area; 6-Side hopper; 7-Central hopper; 7.1-Top section; 7.2-Upper cavity; 7.3-Lower cavity; 8-Central first discharge port; 9-Central second discharge port; 10-Turn plate; 11-Screening trough; 12-First screen plate; 13-Second screen plate; 14-First guide plate; 15-First channel; 16-Second channel; 17-Side channel; 18-Third channel; 19-Fourth channel; 2 0-Central notch; 21-Fifth channel; 22-Sweeping plate; 23-Motor; 24-First arc-shaped guide groove; 25-Second arc-shaped guide groove; 26-Baffle; 27-Sub-material cavity; 28-Baffle; 29-Second guide plate; 30-Transverse rod; 31-Longitudinal rod; 32-Top rod; 33-Spiral groove; 34-Sleeve rod; 35-Slider; 36-Spring; 37-Side insert plate; 38-Central insert plate; 39-Connecting rod; 40-Lifting plate; 41-Vibration motor; 42-Feeding hopper; 43-Frame. Detailed Implementation

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1 to 11 As shown, the mining scraper conveyor with anti-wet and anti-sticky material function provided by the present invention includes:

[0038] Pusher plate 1, with chains 2 on both sides, and two adjacent pusher plates 1 and two chains 2 together form a central storage area 3;

[0039] Push rods 4 are arranged in multiple rows along the conveying direction on the outer side of chain 2. The spacing between two adjacent rows of push rods 4 is the same, and the push rods 4 divide the area between two adjacent push plates 1 into multiple lateral storage areas 5.

[0040] The side hopper 6 is located directly above the side storage area 5 and is used to introduce a first type of coal block with similar length, width and thickness into the side storage area 5. The maximum length of the first type of coal block is less than the distance between two adjacent push rods 4. Specifically, in this embodiment, the first type of coal block refers to a relatively round coal block.

[0041] The central hopper 7 is located directly above the central storage area 3 and can introduce coal powder and a second type of coal into the central storage area 3. The second type of coal is other coal besides the first type of coal mentioned above.

[0042] The top of the middle hopper 7 is provided with two feed ports 8 and 9, which are distributed in front and behind each other and are used for feeding pulverized coal and the second type of coal, respectively.

[0043] The rotating plate 10 is installed in the middle hopper 7 via a rotating shaft. The two ends of the rotating plate 10 are located in the middle first feed port 8 and the middle second feed port 9, respectively. Under its own weight, the rotating plate 10 can block the middle first feed port 8 and keep the middle second feed port 9 open, so that the middle hopper 7 can give priority to providing the middle storage area 3 with the second type of coal.

[0044] In this embodiment, by adding a first type of coal block to the lateral storage area 5, the coal within the lateral storage area 5 becomes relatively rounded. During conveyor operation, the first type of coal block in the lateral storage area 5 contacts the side wall of the conveyor trough, directly impacting the material wet and adhering to the side wall, thus removing the wet and adhering material. Simultaneously, utilizing the shape characteristics of the first coal block, it exhibits greater mobility within the lateral storage area 5, effectively preventing jamming and improving conveying efficiency.

[0045] Secondly, the rotating plate 10 ensures that the second type of coal is prioritized for replenishment in the central storage area 3. This results in the coal mines stored in the central storage area 3 having the lumpy coal mines located at the bottom first. By using the second type of coal mines to contact the bottom wall of the conveyor trough, the wet and sticky materials on the bottom wall of the conveyor trough can be removed more effectively.

[0046] Furthermore, when the amount of the second type of coal entering from the middle two feed port 9 is small, and the amount of coal powder entering from the middle one feed port 8 is large, the impact force of the coal powder causes the rotating plate 10 to rotate. Consequently, in this case, the middle one feed port 8 automatically opens to replenish the coal powder in the middle storage area 3, ensuring that the conveyor has a stable conveying efficiency.

[0047] In addition, the baffle installed can more effectively maintain the original height of the first type of coal block in the lateral storage area 5, so as to ensure that the first type of coal block in the lateral storage area 5 can better cover the side wall of the conveyor trough in the height direction, thereby improving the efficiency of removing wet and sticky materials on the side wall of the conveyor trough.

[0048] In summary, this embodiment arranges the coal entering the conveyor according to its shape and state, and combines the property of the coal sliding inside the conveyor during the conveying process to remove wet and sticky materials inside the conveyor by the coal blocks themselves.

[0049] The mining scraper conveyor with anti-wet and anti-sticking material function in this embodiment also includes a screening trough 11 with the front end inclined downward. A first screen plate 12 and a second screen plate 13 are arranged vertically within the screening trough 11. A first guide plate 14 is arranged between the first screen plate 12 and the second screen plate 13. Circular screening holes are evenly arranged on the first screen plate 12. The distance between the first guide plate 14 and the second screen plate 13 is adapted to the outer diameter of the circular screening holes. The upper part of the first screen plate 12 and the area between the first guide plate 14 and the second screen plate 13 are... A first channel 15 and a second channel 16 are formed between the two screen plates 13 for the second type of coal to enter the middle hopper 7. The rear end of the first guide plate 14 is an outwardly inclined slope. The lateral side of the screening trough 11 extends upward from the top of the second screen plate 13 and arches outward corresponding to the area where the first guide plate 14 is located to form a lateral channel 17 for the first type of coal to enter the lateral hopper 6. A third channel 18 is formed between the inner bottom wall of the screening trough 11 and the second screen plate 13 for coal powder to enter the middle feed port 8.

[0050] After entering from the rear end of the screening trough 11, the coal moves forward along the inclined direction of the screening trough 11 under the action of gravity. The coal first enters the first screening plate, at which point the coal powder will fall directly into the third channel 18, and finally enter the middle feed port 8 through the third channel 18. Coal lumps that do not pass through the circular screening holes on the first screening plate will enter the middle hopper 7 through the first channel 15. The material that passes through the first screening plate and falls into the second screening plate will hit the first guide plate 14 when moving forward. At this time, the coal lumps that pass through the bottom of the first guide plate 14 will enter the middle hopper 7 through the second channel 16. The coal lumps that enter the side channel 17 along the first guide plate 14, whose height is not less than the diameter of the circular screening hole, are the first type of coal lumps, which can enter the side hopper 6 along the side channel 17.

[0051] In summary, the screening tank 11 of this embodiment can directly screen coal into coal powder, a first type of coal block, and a second type of coal block, and guide various types of coal to designated locations.

[0052] Specifically, the middle hopper 7 includes a top portion 7.1 with a circular structure. The inner cavity of the top portion 7.1 includes an upper cavity 7.2 and a lower cavity 7.3. The lower cavity 7.3 is provided with a fourth channel 19 whose rear end is connected to the second channel 16, and the front end of the fourth channel 19 is connected to the middle second discharge port 9. The rear side of the bottom of the upper cavity 7.2 is provided with a middle notch 20 that is connected to the fourth channel 19. The two sides of the bottom of the upper cavity 7.2 are provided with a fifth channel 21 that is connected to the side hopper 6. The upper cavity 7.2 is provided with a sweeping plate 22 that can sweep coal blocks in the upper cavity 7.2 into the fifth channel 21. The top end of the sweeping plate 22 is connected to a motor 23 installed at the top of the middle hopper 7.

[0053] The second type of coal leaving the second channel 16 enters the middle two discharge port 9 through the fourth channel 19. The second type of coal entering the upper cavity 7.2 from the first channel 15 can enter the fourth channel 19 through the central gap 20 and finally enter the middle two discharge port 9 through the fourth channel 19. The second type of coal falling onto the bottom wall of the upper cavity 7.2 can pass through the fifth channel 21 under the action of the sweeping plate 22, realizing the function of replenishing materials to the side hopper 6, ensuring that there are enough coal blocks in the side hopper 6 to enter the side storage area 5.

[0054] Furthermore, the upper cavity 7.2 is provided with a first arc-shaped guide groove 24 and a second arc-shaped guide groove 25 on both side walls, and a partition 26 is provided in the middle of the outlet of the first channel 15. The rear end slots of the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25 are respectively connected to the front end outlet of the first channel 15 located on both sides of the partition 26. The rear end slots of the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25 are respectively located at the front end and the rear end of the two fifth channels 21. The first arc-shaped guide groove 24 and the second arc-shaped guide groove 25 are both set with the front end inclined downward, and the height of the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25 is greater than that of the sweeping plate 22.

[0055] The second type of coal entering the upper cavity 7.2 from the first channel 15 is guided by the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25, and falls onto the bottom wall of the upper cavity 7.2 after passing through the central gap 20. Following the rotation direction of the sweeping plate 22, the second arc-shaped guide groove 25 is located in front of the first arc-shaped guide groove 24. This ensures that, under the action of the sweeping plate 22, the second type of coal falling from the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25 onto the bottom wall of the upper cavity 7.2 will preferentially pass through the fifth channel 21 to replenish the lateral storage area 5 with coal. This ensures that the lateral storage area 5 is always full of coal and ensures the removal of wet and sticky materials from the side wall of the conveyor trough.

[0056] The bottom outlet of the side hopper 6 is divided into sub-material chambers 27, which correspond one-to-one with the side material storage areas 5 between the two adjacent pusher plates 1. The sub-material chambers 27 are stepped with increasing height from front to back. A baffle 28 that can open or close the bottom outlet of the sub-material chamber 27 is inserted into the side of the side hopper 6. A second guide plate 29 with its rear end inclined downward is provided inside the side hopper 6. The rear end of the second guide plate 29 is located directly above the top entrance of the last sub-material chamber 27.

[0057] With this configuration, when the baffle 28 seals the bottom of the sub-material hopper, the coal blocks entering the side hopper 6 are preferentially directed into the last sub-material chamber 27 by the second guide plate 29. As coal blocks continue to enter, and considering the distribution of the sub-material chambers 27, once the last sub-material chamber 27 is full, any overflowing coal blocks will roll into the previous sub-material chamber 27. This replenishes each sub-material chamber 27 with coal blocks, ensuring that the last sub-material chamber 27 is always full. This also ensures that the last side lateral storage area 5, located between the two pusher plates 1, is always full of coal blocks. Combined with the forward pushing action of the pusher plates 1, which compresses the coal, this ensures that the coal in the last storage area always covers the sidewall of the conveyor trough in the vertical direction, guaranteeing the thorough removal of wet and sticky materials from the sidewall.

[0058] Furthermore, a transverse rod 30 is rotatably connected to the rear end of the baffle 28. A longitudinal rod 31 is slidably sleeved at the end of the transverse rod 30 away from the baffle 28. The longitudinal rod 31 rotates outward by 90°, causing the baffle 28 to move out of the bottom of the sub-material cavity 27 and opening the sub-material cavity 27. The longitudinal rod 31 is L-shaped. Top rods 32 are fixedly installed on both sides of the top of the pusher plate 1. When the top rod 32 passes through the bottom transverse part of the longitudinal rod 31, it drives the longitudinal rod to rotate outward by 90°. The surface of the longitudinal rod 31 is provided with a spiral groove 33. A sleeve rod 34 that can be raised and lowered and sleeved outside the longitudinal rod 31 is installed on the middle hopper 7. A slider 35 that slides with the spiral groove 33 is fixedly installed inside the sleeve rod 34. A spring 36 is connected to the bottom of the sleeve rod 34. When the longitudinal rod 31 drives the baffle 28 to open the sub-material cavity 27, the sleeve rod 34 moves upward and stretches the spring 36.

[0059] When the pusher plate 1 drives the top rod 32 past the rear end of the side hopper 6, the top rod 32 presses forward against the bottom transverse section of the longitudinal rod 31, causing the longitudinal rod 31 to rotate. The longitudinal rod 31 drives the transverse rod 30 to rotate, and the transverse rod 30 drives the baffle 28 to move outward in the side hopper 6, causing the baffle 28 to leave the bottom of the sub-material chamber 27, opening the sub-material chamber 27, so that the coal blocks in the side hopper 6 fall directly into the side storage area 5.

[0060] During this process, the spiral groove 33 pushes the slider 35 to make the sleeve rod 34 move upward and compress the spring 36. Then, when the top rod 32 separates from the longitudinal rod 31, the spring 36 returns to its original position and pulls the sleeve rod 34 down. The slider 35 squeezes the spiral groove 33 to make the longitudinal rod 31 rotate and return to its original position. Then, the baffle 28 is reinserted into the side hopper 6 and the bottom of the sub-material chamber 27 is sealed. Coal is continuously stored in the sub-material chamber 27 until the next pusher plate 1 passes the top rod 32.

[0061] By setting spring 36 to provide a restoring force to baffle 28, the baffle 28 can be restored quickly and has strong responsiveness. This allows the feed chamber 27 sufficient time to hold material, ensuring that a sufficient amount of coal is stored.

[0062] Furthermore, a lateral insert plate 37 is fixedly connected to the sleeve rod 34 and inserted into the lateral channel 17 from bottom to top. When the sleeve rod 34 moves upward to the highest position, the lateral insert plate 37 blocks the outlet of the lateral channel 17.

[0063] This configuration ensures that when coal is added to the side storage area 5 at the bottom of the sub-material chamber 27, the side insert plate 37 blocks the outlet of the side channel 17. At this time, the first type of coal formed by screening in the screening trough 11 will be blocked by the side insert plate 37 and accumulated at the outlet of the side channel 17, and will not enter the side hopper 6. This not only prevents new first type of coal from entering the side hopper 6 from the side channel 17 from continuing to enter the side storage area 5 when coal is added to the side storage area 5, causing an excess of coal in the side storage area 5, but also ensures that, by accumulating the first type of coal, relatively uniform coal is filled into the side storage area 5 for each set of pusher plates 1.

[0064] The top part 7.1 has a middle insert plate 38 inserted inside the outlet of the first channel 15. The top surface of the middle insert plate 38 is fixedly connected to the outer side of the top surface of the middle insert plate 38, and the top end of the sleeve rod 34 is fixedly connected to the top end of the sleeve rod 34. When the sleeve rod 34 is in the highest position, the middle insert plate 38 blocks the first channel 15.

[0065] This design ensures that when the bottom of the feed chamber 27 is opened to replenish coal to the lateral storage area 5, the central insert plate 38 blocks the outlet of the first channel 15. This prevents the first type of coal in the first channel 15 from being replenished from the fifth channel 21 into the lateral hopper 6, thus preventing interference with the feeding of the first type of coal in the lateral storage area 5. Furthermore, the connecting rod 39 always blocks the area where the central insert plate 38 contacts the top portion laterally, preventing coal or coal dust from entering and ensuring a smoother and more stable movement of the central insert plate 38.

[0066] In a relatively specific embodiment, the first screen plate 12 and the second screen plate 13 are fixedly connected by a lifting plate 40. The lifting plate 40 is slidably disposed on the side wall of the screening trough 11, and the lifting plate 40 is connected to a vibration motor 41. This arrangement can improve the screening efficiency of coal mines and prevent coal blockage.

[0067] The rear end of the screening tank 11 is connected to a feeding hopper 42, the bottom of the feeding hopper 42 is connected to a frame 43, the side hopper 6 is fixedly installed on the frame 43, and the middle hopper 7 is fixedly connected to the side hopper 6.

[0068] The technical scope of this invention is not limited to the contents of the above specification. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the scope of this invention.

Claims

1. A mining scraper conveyor with anti-wet and anti-sticking material function, characterized in that, include: Pusher plate (1), with chains (2) on both sides, and two adjacent pusher plates (1) and two chains (2) form a central storage area (3); Push rods (4) are arranged in multiple rows along the conveying direction on the outer side of the chain (2). The spacing between two adjacent rows of push rods (4) is the same, and the push rods (4) divide the area between two adjacent push plates (1) into multiple lateral storage areas (5). The side hopper (6) is located directly above the side storage area (5) and is used to introduce a first type of coal block with similar length, width and thickness into the side storage area (5), and the maximum length of the first type of coal block is less than the distance between two adjacent push rods (4); The central hopper (7) is located directly above the central storage area (3) and can introduce coal powder and a second type of coal into the central storage area (3). The second type of coal is other coal besides the first type of coal mentioned above. The top of the middle hopper (7) is provided with two feed ports (8) and (9) distributed in front and behind, respectively for feeding pulverized coal and feeding the second type of coal. The middle hopper (7) includes a top part (7.1) with a circular structure. The inner cavity of the top part (7.1) includes an upper cavity (7.2) and a lower cavity (7.3). The lower cavity (7.3) is provided with a fourth channel (19) whose rear end is connected to the second channel (16). The front end of the fourth channel (19) is connected to the middle second discharge port (9). The rear side of the bottom of the upper cavity (7.2) is provided with a middle notch (20) that is connected to the fourth channel (19). The two sides of the bottom of the upper cavity (7.2) are provided with a fifth channel (21) that is connected to the side hopper (6). The upper cavity (7.2) is provided with a sweeping plate (22) that can sweep coal blocks in the upper cavity (7.2) into the fifth channel (21). The top end of the sweeping plate (22) is connected to a motor (23) installed at the top of the middle hopper (7). The rotating plate (10) is installed in the middle hopper (7) by rotating the shaft. The two ends of the rotating plate (10) are located in the middle first feed port (8) and the middle second feed port (9) respectively. Under its own bias, the rotating plate (10) can block the middle first feed port (8) and keep the middle second feed port (9) open, so that the middle hopper (7) can give priority to providing the middle storage area (3) with the second type of coal. A screening trough (11) is inclined downwards at the front end. A first screen plate (12) and a second screen plate (13) are arranged vertically within the screening trough (11). A first guide plate (14) is positioned between the first screen plate (12) and the second screen plate (13). Circular screening holes are evenly distributed on the first screen plate (12). The distance between the first guide plate (14) and the second screen plate (13) is adapted to the outer diameter of the circular screening holes. A screen is formed above the first screen plate (12) and between the first guide plate (14) and the second screen plate (13). There are a first channel (15) and a second channel (16) for the second type of coal to enter the middle hopper (7). The rear end of the first guide plate (14) is an outwardly inclined slope. The lateral side of the screening trough (11) forms a lateral channel (17) for the first type of coal to enter the lateral hopper (6) from the top of the second screen plate (13) upward and corresponding to the area where the first guide plate (14) is located. A third channel (18) for coal powder to enter the middle feed port (8) is formed between the inner bottom wall of the screening trough (11) and the second screen plate (13).

2. The mine scraper conveyor with a wet and sticky material preventing function according to claim 1, characterized in that, The upper cavity (7.2) is provided with a first arc-shaped guide groove (24) and a second arc-shaped guide groove (25) on its two side walls respectively. A partition (26) is provided in the middle of the outlet of the first channel (15). The rear end slots of the first arc-shaped guide groove (24) and the second arc-shaped guide groove (25) are respectively connected to the front end outlet of the first channel (15) located on both sides of the partition (26). The rear end slots of the first arc-shaped guide groove (24) and the second arc-shaped guide groove (25) are respectively located at the front end and the rear end of the two fifth channels (21). The first arc-shaped guide groove (24) and the second arc-shaped guide groove (25) are both set with the front end tilted downward, and the height of the first arc-shaped guide groove (24) and the second arc-shaped guide groove (25) is greater than that of the sweeping plate (22).

3. A mining scraper conveyor with anti-wet and anti-sticking material function according to claim 2, characterized in that, The bottom outlet of the side hopper (6) is divided into sub-material chambers (27) that correspond one-to-one with the side storage areas (5) between the two adjacent push plates (1). The sub-material chambers (27) are stepped with increasing height from front to back. A baffle (28) that can open or close the bottom outlet of the sub-material chamber (27) is inserted into the side of the side hopper (6). A second guide plate (29) with its rear end tilted downward is provided inside the side hopper (6). The rear end of the second guide plate (29) is located directly above the top entrance of the last sub-material chamber (27).

4. A mining scraper conveyor with anti-wet and anti-sticking material function according to claim 3, characterized in that, A transverse rod (30) is rotatably connected to the rear end of the baffle (28). A longitudinal rod (31) is slidably sleeved at the end of the transverse rod (30) away from the baffle (28). The longitudinal rod (31) rotates outward by 90°, causing the baffle (28) to move out of the bottom of the sub-material cavity (27) and opening the sub-material cavity (27). The longitudinal rod (31) is L-shaped. Top rods (32) are fixedly installed on both sides of the top of the pusher plate (1). When the top rod (32) passes through the bottom transverse part of the longitudinal rod (31), it drives... The longitudinal rod rotates outward by 90°. The surface of the longitudinal rod (31) is provided with a spiral groove (33). The middle hopper (7) is equipped with a sleeve rod (34) that can be raised and lowered and is sleeved outside the longitudinal rod (31). A slider (35) that slides with the spiral groove (33) is fixedly provided inside the sleeve rod (34). A spring (36) is connected to the bottom of the sleeve rod (34). When the longitudinal rod (31) drives the baffle (28) to open the sub-material cavity (27), the sleeve rod (34) moves upward and stretches the spring (36).

5. A mining scraper conveyor with anti-wet and anti-sticking material function according to claim 4, characterized in that, A lateral insert plate (37) is fixedly connected to the sleeve rod (34) and inserted into the lateral channel (17) from bottom to top. When the sleeve rod (34) moves upward to the highest position, the lateral insert plate (37) blocks the outlet of the lateral channel (17).

6. A mining scraper conveyor with anti-wet and anti-sticking material function according to claim 5, characterized in that, The top part (7.1) has a middle insert plate (38) inserted inside the outlet of the first channel (15) at the rear end. The top surface of the middle insert plate (38) is fixedly connected to a connecting rod (39) whose top end is fixedly connected to the top end of the sleeve rod (34). When the sleeve rod (34) is in the highest position, the middle insert plate (38) blocks the first channel (15).

7. A mining scraper conveyor with anti-wet and anti-sticking material function according to claim 1, characterized in that, The first sieve plate (12) and the second sieve plate (13) are fixedly connected by a lifting plate (40). The lifting plate (40) is slidably disposed on the side wall of the screening trough (11), and the lifting plate (40) is connected to a vibration motor (41).

8. A mining scraper conveyor with anti-wet and anti-sticking material function according to claim 1, characterized in that, The rear end of the screening tank (11) is connected to a feeding hopper (42), the bottom of the feeding hopper (42) is connected to a frame (43), the side hopper (6) is fixedly installed on the frame (43), and the middle hopper (7) is fixedly connected to the side hopper (6).

Images