Mining scraper conveyor with function of preventing wet and sticky materials

Abstract

The invention belongs to the technical field of mining conveyors, and particularly relates to a mining scraper conveyor with a function of preventing wet and sticky materials, which comprises material pushing plates, chains are arranged on two sides of each material pushing plate, and two adjacent material pushing plates are matched with two chains to define a middle material storage area; a plurality of rows of push rods are arranged on the outer side face of the chain in the conveying direction, the distances between every two adjacent rows of push rods are the same, and the push rods divide the area between every two adjacent material pushing plates into a plurality of lateral material storage areas; the lateral hopper is located over the lateral material storage area and used for guiding first coal briquettes with the approximate length, width and thickness into the lateral material storage area, and the maximum length of the first coal briquettes is smaller than the distance between every two adjacent push rods; the middle hopper is located over the middle material storage area and can guide pulverized coal and second coal briquettes into the middle material storage area. By arranging conveyed coal materials, wet and sticky materials in the conveyor are automatically removed in the coal material conveying process.

Description

Technical Field

[0001] The present invention relates to the technical field of mine conveyors; specifically, the present invention relates to a mine scraper conveyor with the function of preventing wet and sticky materials. Background Art

[0002] As a mine conveying machine, the scraper conveyor is widely used in the transportation of coal blocks mined. In order to reduce dust in the coal mining face, spraying is used for dust reduction. As a result, the fragmented coal blocks and coal powder are prone to adhere to the scraper conveyor after getting wet. Over time, the adhered coal blocks and coal powder become thicker and thicker, which will increase the resistance during the transportation of the scraper conveyor, causing the conveyor to jam. Usually, it is necessary to stop the machine and manually hold a high-pressure water gun to wash it, which increases the workload of workers and reduces the construction efficiency. In the prior art, the scraper conveyor is also improved to enhance its function of preventing wet and sticky materials.

[0003] For example, the prior art with the publication number CN115140523A provides a scraper conveyor for a coal mining face, including a base plate, side mounting plates, driving rollers, driving motors, top support plates, bottom support plates, and air bags. The present invention belongs to the technical field of coal conveying equipment. During equipment maintenance, the air bags on the top support plates can be inflated by using an air pump, so as to peel off the coal blocks and coal powder adhered to the top support plates. Then, the peeled coal can be conveyed out by using a scraper. When the air bags deflate and shrink, the released gas can flow into the cleaning air pipe, and the gas flowing out of the cleaning air pipe can blow off the coal adhered to the sprockets to clean the sprockets, preventing a large amount of coal from adhering to the sprockets after long-term use, resulting in equipment jamming and other situations.

[0004] In the above-mentioned solution of the prior art, in the method of using the inflation of the air bags to disperse the wet and sticky materials and then combining with the air flow to blow off the wet and sticky materials, setting air bags at the bottom of the conveyor trough will affect the strength of the conveyor trough, and at the same time, it will also increase the resistance during material pushing. In addition, the treatment of wet and sticky materials still needs to be carried out when the machine is stopped and unloaded. Moreover, the internal working environment of the conveyor is complex and random. Increasing the internal structure of the conveyor too much will affect the operation stability of the equipment and is not conducive to the daily maintenance of the conveyor, increasing the use cost. Summary of the Invention

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

[0006] To achieve the foregoing object, the present invention provides a mine scraper conveyor with the function of preventing wet and sticky materials, including: A pushing plate, with chains arranged on both sides thereof, and two adjacent pushing plates cooperate with two chains to enclose a middle material storage area; The push rods are arranged in multiple rows along the conveying direction on the outer side of the chain. The distance between adjacent two rows of push rods is the same, and the push rods divide the area between adjacent two pushing plates into multiple lateral stockpiling areas; The lateral hopper is located directly above the lateral stockpiling area and is used to introduce the first type of coal blocks with lengths, widths and thicknesses close to each other into the lateral stockpiling area. The maximum length of the first type of coal blocks is less than the distance between adjacent two push rods; The middle hopper is located directly above the middle stockpiling area and can introduce pulverized coal and the second type of coal blocks into the middle stockpiling area. The second type of coal blocks are other coal blocks except the above-mentioned first type of coal blocks; Two middle discharge openings for pulverized coal discharging and second type of coal block discharging respectively, which are arranged front and back, are provided at the top end of the middle hopper; The rotating plate is rotatably installed in the middle hopper through a rotating shaft. The two ends of the rotating plate are respectively located in the middle first discharge opening and the middle second discharge opening. The rotating plate can block the middle first discharge opening under the action of its own overweight and keep the middle second discharge opening open, so that the middle hopper preferentially provides the second type of coal blocks for the middle stockpiling area.

[0007] In a mine scraper conveyor with the function of preventing wet and sticky materials as described above, optionally, it further includes a screening trough with a front end inclined downward. A first sieve plate and a second sieve plate are arranged up and down in the screening trough. A first guide plate is arranged between the first sieve plate and the second sieve plate. Circular screening holes are evenly arranged on the first sieve plate. The distance between the first guide plate and the second sieve 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 blocks to enter the middle hopper are respectively formed above the first sieve plate and between the first guide plate and the second sieve plate. The rear end of the first guide plate is an inclined surface inclined forward from the outside. The lateral side of the screening trough arches upward from the top of the second sieve plate and corresponds to the area where the first guide plate is located to form a lateral channel for the first type of coal blocks to enter the lateral hopper. A third channel for pulverized coal to enter the middle first discharge opening is formed between the inner bottom wall of the screening trough and the second sieve plate.

[0008] In a mine scraper conveyor with the function of preventing wet and sticky materials as described above, 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. A fourth channel with its rear end communicating with the second channel is arranged in the lower cavity, and the front end of the fourth channel communicates with the middle second discharge opening. A middle notch communicating with the fourth channel is opened at the rear side of the bottom of the upper cavity, and fifth channels communicating with the lateral hopper are arranged on both sides of the bottom of the upper cavity. A sweeping plate capable of sweeping the coal blocks in the upper cavity into the fifth channel is arranged in the upper cavity. The top end of the sweeping plate is connected with a motor installed at the top end of the middle hopper.

[0009] In a coal mine scraper conveyor with the function of preventing wet and sticky materials as described above, optionally, first arc-shaped guide grooves and second arc-shaped guide grooves are respectively arranged on two side walls of the upper cavity. A partition plate is arranged in the middle of the outlet of the first channel. The rear end openings of the first arc-shaped guide groove and the second arc-shaped guide groove are respectively communicated with two regions on both sides of the front end outlet of the first channel and located at the front end and the rear end of two fifth channels respectively. Both the first arc-shaped guide groove and the second arc-shaped guide groove are arranged to incline downward at the front end, and the heights of the first arc-shaped guide groove and the second arc-shaped guide groove are greater than those of the sweeping plate.

[0010] In a coal mine scraper conveyor with the function of preventing wet and sticky materials as described above, optionally, the bottom outlet of the side hopper is divided into sub-material cavities corresponding to the side material storage areas between adjacent two pusher plates one by one, and the sub-material cavities are in a stepped shape with the height increasing continuously from front to back. A baffle plate capable of opening or closing the bottom outlet of the sub-material cavity is inserted on the side of the side hopper. A second material guide plate with the rear end inclining downward is arranged inside the side hopper, and the rear end of the second material guide plate is directly above the top inlet of the last sub-material cavity. <>

[0011] In a coal mine scraper conveyor with the function of preventing wet and sticky materials as described above, optionally, a transverse rod is rotatably connected to the rear end of the baffle plate. A longitudinal rod is slidably sleeved at one end of the transverse rod far away from the baffle plate. The longitudinal rod rotates outward by 90° to move the baffle plate out of the bottom of the sub-material cavity and open the sub-material cavity. The longitudinal rod is in an "L" shape. Top rods are fixedly arranged on both sides of the top of the pusher plate. When the top rods pass through the bottom horizontal part of the longitudinal rod, the longitudinal rod is driven to rotate outward by 90°. A spiral groove is arranged on the surface of the longitudinal rod. A sleeve rod capable of lifting and sleeved outside the longitudinal rod is installed on the middle hopper. A slider slidably matched with the spiral groove is fixedly arranged inside the sleeve rod. A spring is connected to the bottom of the sleeve rod. When the longitudinal rod drives the baffle plate to open the sub-material cavity, the sleeve rod moves upward and stretches the spring.

[0012] In a coal mine scraper conveyor with the function of preventing wet and sticky materials as described above, optionally, a side insertion plate inserted into the side channel from bottom to top is fixedly connected to the sleeve rod. When the sleeve rod moves upward to the highest position, the side insertion plate blocks the outlet of the side channel.

[0013] In a coal mine scraper conveyor with the function of preventing wet and sticky materials as described above, optionally, a middle insertion plate is inserted into the inside of the rear end of the top part corresponding to the outlet part of the first channel. A connecting rod with the top fixedly connected to the top of the sleeve rod is fixedly connected to the outside of the top surface of the middle insertion plate. When the sleeve rod is in the highest position, the middle insertion plate blocks the first channel.

[0014] In a coal mine scraper conveyor with the function of preventing wet and sticky materials as described above, optionally, the first sieve plate and the second sieve plate are fixedly connected through a lifting plate. The lifting plate is slidably arranged on the side wall of the screening tank, and the lifting plate is connected with a vibration motor.

[0015] In a coal mine scraper conveyor with the function of preventing wet and sticky materials as described above, optionally, the rear end of the screening tank is connected with a feeding hopper. The bottom of the feeding hopper is connected with a frame. The side hopper is fixedly installed on the frame, and the middle hopper is fixedly connected with the side hopper.

[0016] For the coal mine scraper conveyor with the function of preventing wet and sticky materials of the present invention, by setting a side storage area and a middle storage area, and making the first type of relatively round coal blocks replenished in the side storage area, the first type of coal blocks can cover the side wall of the conveyor trough during the conveying process. By effectively impacting and scraping the wet and sticky materials on the side wall, the wet and sticky materials on the side wall of the conveyor trough can be effectively removed. At the same time, by preferentially adding the second type of coal blocks to the middle storage area, the coal blocks in the middle storage area are located at the bottom of the pulverized coal and directly contact the bottom wall of the conveyor trough, so as to effectively remove the wet and sticky materials on the bottom wall of the conveyor trough. In summary, the present application uses the bulk coal materials conveyed by the conveyor itself to automatically remove the wet and sticky materials inside the conveyor trough. The design concept is novel, which can ensure the conveying efficiency while achieving the function of self-cleaning the wet and sticky materials of the conveyor, and the effect is remarkable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Referring to the accompanying drawings, the disclosure of the present invention will become more apparent. It should be understood that these drawings are only for the purpose of illustration and are not intended to limit the protection scope of the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is for the present invention Figure 1 the enlarged view at A in; Figure 3 is for the present invention Figure 1 the enlarged view at B in; Figure 4 is for the present invention Figure 3 the enlarged view at C in; Figure 5 is a schematic diagram of the structure of the middle hopper of the present invention; Figure 6 is for the present invention Figure 5 the sectional view of; Figure 7 is for the present invention Figure 5 the internal schematic diagram of; Figure 8 is a partial sectional view of the screening tank of the present invention; Figure 9 Schematic diagram of the side insertion plate and the middle insertion plate of the present invention; Figure 10 Partial cross-sectional view of the side hopper of the present invention; Figure 11 Schematic diagram of the slider of the present invention.

[0018] Reference numerals: 1 - pusher plate; 2 - chain; 3 - middle storage area; 4 - push rod; 5 - side storage area; 6 - side hopper; 7 - middle hopper; 7.1 - top part; 7.2 - upper cavity; 7.3 - lower cavity; 8 - middle-lower discharge opening; 9 - middle-second discharge opening; 10 - rotating plate; 11 - screening trough; 12 - first sieve plate; 13 - second sieve plate; 14 - first guide plate; 15 - first channel; 16 - second channel; 17 - side channel; 18 - third channel; 19 - fourth channel; 20 - middle notch; 21 - fifth channel; 22 - sweeping plate; 23 - motor; 24 - first arc-shaped guide groove; 25 - second arc-shaped guide groove; 26 - partition board; 27 - sub-material cavity; 28 - baffle; 29 - second guide plate; 30 - cross bar; 31 - longitudinal bar; 32 - ejector rod; 33 - spiral groove; 34 - sleeve rod; 35 - slider; 36 - spring; 37 - side insertion plate; 38 - middle insertion plate; 39 - connecting rod; 40 - lifting plate; 41 - vibration motor; 42 - feeding hopper; 43 - frame. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1 to 11 shown, the mining scraper conveyor with the function of preventing wet and sticky materials provided by the present invention includes: A pusher plate 1, with chains 2 arranged on both sides thereof. Two adjacent pusher plates 1 and two chains 2 cooperate to enclose a middle storage area 3; Push rods 4, arranged in multiple rows along the conveying direction on the outer side of the chain 2. The distance between two adjacent rows of push rods 4 is the same, and the push rods 4 divide the area between two adjacent pusher plates 1 into multiple side storage areas 5; A side hopper 6, which is located directly above the side storage area 5 and is used to introduce the first type of coal blocks with lengths, widths, and thicknesses close to each other into the side storage area 5. The maximum length of the first type of coal blocks is less than the distance between two adjacent push rods 4; specifically, in this embodiment, the first type of coal blocks refers to relatively round coal blocks.

[0021] The middle hopper 7 is located directly above the middle stockpiling area 3 and can introduce pulverized coal and the second type of coal block into the middle stockpiling area 3. The second type of coal block is other coal blocks except the above-mentioned first type of coal block. At the top of the middle hopper 7, there are two middle material discharge openings 8 and middle two material discharge openings 9 arranged front and back, which are respectively used for the discharge of pulverized coal and the second type of coal block. The rotating plate 10 is rotatably installed in the middle hopper 7 through a rotating shaft. The two ends of the rotating plate 10 are respectively located in the middle one material discharge opening 8 and the middle two material discharge opening 9. Under the action of its own weight bias, the rotating plate 10 can block the middle one material discharge opening 8 and keep the middle two material discharge opening 9 open, so that the middle hopper 7 preferentially provides the second type of coal block for the middle stockpiling area 3.

[0022] In this embodiment, by supplementing the first type of coal block into the side stockpiling area 5, the coal in the side stockpiling area 5 is a relatively round coal. When the conveyor is running, the first type of coal block in the side stockpiling area 5 contacts the side wall of the conveyor trough and directly impacts the wet and sticky material adhered to the side wall of the conveyor trough, removing the wet and sticky material on the side wall of the conveyor trough. At the same time, using the shape characteristics of the first coal block, the first coal block has stronger mobility in the side stockpiling area 5, which can effectively avoid jamming and improve the conveying efficiency.

[0023] Secondly, through the arranged rotating plate 10, for the middle stockpiling area 3, the second type of coal block will be preferentially supplemented. Among the coal stored in the middle stockpiling area 3, the lump coal is preferentially located at the bottom. By using the second type of coal block to contact the bottom wall of the conveyor trough, the wet and sticky material on the bottom wall of the conveyor trough can be removed more effectively.

[0024] And when the amount of the second type of coal block entering from the middle two material discharge opening 9 is small and the amount of pulverized coal entering from the middle one material discharge opening 8 is large, the impact force of the pulverized coal causes the rotating plate 10 to rotate. Furthermore, in this case, the middle one material discharge opening 8 automatically opens to supplement pulverized coal into the middle stockpiling area 3, ensuring that the conveyor has a stable conveying efficiency.

[0025] In addition, the arranged stop rod can keep the first type of coal block in the side stockpiling area 5 more effectively maintain its original height, so as to ensure that the first type of coal block in the side stockpiling area 5 can better cover the side wall of the conveyor trough in the height direction, so as to improve the cleaning efficiency of the wet and sticky material on the side wall of the conveyor trough.

[0026] In summary, in this embodiment, the coal entering the conveyor is reasonably arranged according to its shape and state. Combining the property of the coal sliding in the conveyor during the conveying process of the coal by the conveyor, the coal block itself is used to remove the wet and sticky material inside the conveyor.

[0027] The coal mine scraper conveyor with the function of preventing wet and sticky materials in this embodiment further includes a screening trough 11 with a front end inclined downward. A first sieve plate 12 and a second sieve plate 13 are arranged up and down in the screening trough 11. A first material guide plate 14 is arranged between the first sieve plate 12 and the second sieve plate 13. Circular screening holes are evenly arranged on the first sieve plate 12. The distance between the first material guide plate 14 and the second sieve plate 13 is adapted to the outer diameter of the circular screening holes. A first channel 15 and a second channel 16 for the second type of coal blocks to enter the middle hopper 7 are respectively formed above the first sieve plate 12 and between the first material guide plate 14 and the second sieve plate 13. The rear end of the first material guide plate 14 is an inclined surface inclined forward from the outside. The side of the screening trough 11 arches upward from the top of the second sieve plate 13 and corresponds to the area where the first material guide plate 14 is located to form a side channel 17 for the first type of coal blocks to enter the side hopper 6. A third channel 18 for pulverized coal to enter the middle-lower feeding port 8 is formed between the inner bottom wall of the screening trough 11 and the second sieve plate 13.

[0028] After the coal mine enters from the rear end of the screening trough 11, under the action of gravity, it moves forward along the inclined direction of the screening trough 11. The coal mine first enters the first screening plate. At this time, the pulverized coal will directly fall into the third channel 18 and finally enter the middle-lower feeding port 8 through the third channel 18. The coal blocks 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 materials that pass through the first screening plate and fall onto the second screening plate will hit the first material guide plate 14 when moving forward. At this time, the coal blocks passing through the bottom of the first material guide plate 14 enter the middle hopper 7 through the second channel 16, and the height of the coal blocks entering the side channel 17 along the first material guide plate 14 is not less than the diameter of the circular screening holes. This part of the coal blocks is the first type of coal blocks and can enter the side hopper 6 along the side channel 17.

[0029] In summary, the screening trough 11 of this embodiment can directly screen the coal mine into pulverized coal, the first type of coal blocks and the second type of coal blocks, and guide various different types of coal mines to the designated positions.

[0030] Specifically, 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. A fourth channel 19 with its rear end communicating with the second channel 16 is arranged in the lower cavity 7.3, and the front end of the fourth channel 19 communicates with the middle-lower second feeding port 9. A middle notch 20 communicating with the fourth channel 19 is opened at the rear side of the bottom of the upper cavity 7.2, and fifth channels 21 communicating with the side hopper 6 are arranged on both sides of the bottom of the upper cavity 7.2. A sweeping plate 22 capable of sweeping the coal blocks in the upper cavity 7.2 into the fifth channels 21 is arranged in the upper cavity 7.2. The top end of the sweeping plate 22 is connected to a motor 23 installed at the top of the middle hopper 7.

[0031] The second type of coal blocks leaving the second channel 16 enter the middle two feeding openings 9 through the fourth channel 19. The second type of coal blocks entering the upper cavity 7.2 from the first channel 15 can enter the fourth channel 19 through the middle notch 20 and finally enter the middle two feeding openings 9 through the fourth channel 19. The second type of coal blocks 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 and ensuring that there are enough coal blocks in the side hopper 6 to enter the side storage area 5.

[0032] Further, the two side walls of the upper cavity 7.2 are respectively provided with a first arc-shaped guide groove 24 and a second arc-shaped guide groove 25. A partition plate 26 is arranged 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 communicated with the two side areas of the front end outlet of the first channel 15 on both sides of the partition plate 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. Both the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25 are arranged with the front end inclined downward, and the heights of the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25 are greater than that of the sweeping plate 22.

[0033] The second type of coal blocks entering the upper cavity 7.2 from the first channel 15 will be guided by the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25, and after passing through the middle notch 20, they will fall onto the bottom wall of the upper cavity 7.2. Along 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, so that under the action of the sweeping plate 22, the second type of coal blocks falling onto the bottom wall of the upper cavity 7.2 from the first arc-shaped guide groove 24 and the second arc-shaped guide groove 25 will preferentially pass through the fifth channel 21 to replenish coal blocks to the side storage area 5. In this way, it is ensured that the side storage area 5 is always filled with coal blocks and the wet sticky materials on the side wall of the conveyor trough are removed.

[0034] Among them, the bottom outlet of the side hopper 6 is divided into sub-material cavities 27 corresponding to the side storage areas 5 between adjacent two pusher plates 1 one by one, and the sub-material cavities 27 are in a stepped shape with the height increasing from front to back. A baffle plate 28 that can open or close the bottom outlet of the sub-material cavity 27 is inserted on the side of the side hopper 6. A second guide plate 29 with the rear end inclined downward is arranged inside the side hopper 6, and the rear end of the second guide plate 29 is directly above the top entrance of the last sub-material cavity 27.

[0035] With such a setting, when the baffle 28 closes the bottom of the sub-hopper, the coal lumps entering the lateral hopper 6, under the action of the second guiding plate 29, preferentially enter the rearmost sub-hopper cavity 27. Along with the continuous entry of the coal lumps and in combination with the distribution form of the sub-hopper cavity 27, after the rearmost sub-hopper cavity 27 is filled with coal lumps, the overflowing coal lumps will roll into the previous sub-hopper cavity 27, thereby realizing the replenishment of each sub-hopper cavity 27 and always keeping the rearmost sub-hopper cavity 27 filled with coal lumps. At this time, in the lateral stockpiling area 5 between the two pusher plates 1, the rearmost lateral stockpiling area 5 is always filled with coal lumps. Combining with the property that the pusher plate 1 pushes forward to cause the coal mine to be pressed backward, it is ensured that the coal mine in the rearmost stockpiling area can always cover the side wall of the conveyor trough in the height direction, ensuring the full removal of the wet and sticky materials on the side wall of the conveyor trough.

[0036] Further, the rear end of the baffle 28 is rotatably connected with a transverse rod 30. A longitudinal rod 31 is slidably sleeved at one end of the transverse rod 30 away from the baffle 28. The longitudinal rod 31 rotates outward by 90° to move the baffle 28 out of the bottom of the sub-hopper cavity 27 and open the sub-hopper cavity 27. The longitudinal rod 31 is in an "L" shape. Both sides of the top of the pusher plate 1 are fixedly provided with ejector rods 32. When the ejector rods 32 pass through the bottom horizontal part of the longitudinal rod 31, they drive the longitudinal rod to rotate outward by 90°. A spiral groove 33 is arranged on the surface of the longitudinal rod 31. A sleeve rod 34 which can be lifted and is sleeved outside the longitudinal rod 31 is installed on the middle hopper 7. A slider 35 which is slidably matched with the spiral groove 33 is fixedly arranged in 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-hopper cavity 27, the sleeve rod 34 moves upward and stretches the spring 36.

[0037] When the pusher plate 1 drives the ejector rod 32 to pass through the rear end of the lateral hopper 6, the ejector rod 32 makes the longitudinal rod 31 rotate by forwardly squeezing the bottom horizontal section of the longitudinal rod 31. The longitudinal rod 31 drives the transverse rod 30 to rotate, and the transverse rod 30 drives the baffle 28 to displace outward in the lateral hopper 6, so that the baffle 28 leaves the bottom of the sub-hopper cavity 27 and opens the sub-hopper cavity 27, enabling the coal lumps in the lateral hopper 6 to directly fall into the lateral stockpiling area 5.

[0038] During this process, the spiral groove 33 makes the sleeve rod 34 move upward and compress the spring 36 by pushing the slider 35. Furthermore, when the ejector rod 32 separates from the longitudinal rod 31, when the spring 36 resets, it pulls down the sleeve rod 34. The slider 35 makes the longitudinal rod 31 rotate and reset by squeezing the spiral groove 33, and then makes the baffle 28 re-insert into the lateral hopper 6 and close the bottom end of the sub-hopper cavity 27. Before the next pusher plate 1 passes the ejector rod 32, coal mine is always stockpiled in the sub-hopper cavity 27.

[0039] By setting the spring 36 to provide a reset force for the baffle 28, the reset speed of the baffle 28 is relatively fast, and it has strong corresponding performance. Thus, the sub-material cavity 27 has sufficient material storage time to ensure that a sufficient amount of coal blocks are stored.

[0040] Furthermore, a lateral insertion 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 is displaced upward to the highest position, the lateral insertion plate 37 seals the outlet of the lateral channel 17.

[0041] With such a setting, when the bottom of the sub-material cavity 27 is opened to supplement the coal blocks in the lateral storage area 5, the lateral insertion plate 37 seals the outlet of the lateral channel 17. At this time, the first type of coal blocks formed by screening in the screening trough 11 will be blocked by the lateral insertion plate 37 and stored at the outlet of the lateral channel 17, and will not enter the lateral hopper 6. This can not only prevent new first-type coal mines that enter the lateral hopper 6 from the lateral channel 17 when the lateral storage area 5 is supplemented with coal blocks from continuing to enter the lateral storage area 5 and causing an excessive amount of coal blocks in the lateral storage area 5, but also, by storing the first type of coal blocks, relatively uniform coal blocks are filled into the lateral storage area 5 for each set of pusher plates 1.

[0042] A middle insertion plate 38 is inserted into the interior of the rear end of the top part 7.1 corresponding to the outlet part of the first channel 15. The outer side of the top surface of the middle insertion 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 insertion plate 38 seals the first channel 15.

[0043] With such a setting, when the bottom of the sub-material cavity 27 is opened to supplement the coal blocks in the lateral storage area 5, the middle insertion plate 38 seals the outlet of the first channel 15, preventing the first type of coal blocks in the first channel 15 from being supplemented into the lateral hopper 6 through the fifth channel 21 and interfering with the feeding of the first type of coal blocks in the lateral storage area 5 during this process. In addition, the connecting rod 39 always blocks the area where the middle insertion plate 38 contacts the lateral and top parts, preventing coal blocks or coal powder from entering, and ensuring that the movement of the middle insertion plate 38 is more smooth and stable.

[0044] In a relatively specific embodiment, 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 arranged on the side wall of the screening trough 11, and the lifting plate 40 is connected with a vibration motor 41. With such a setting, the screening efficiency of the coal mine can be improved, and at the same time, coal block blockage can be prevented.

[0045] The rear end of the screening trough 11 is connected with a feeding hopper 42. The bottom of the feeding hopper 42 is connected with a frame 43. The lateral hopper 6 is fixedly installed on the frame 43, and the middle hopper 7 is fixedly connected with the lateral hopper 6.

[0046] The technical scope of the present invention is not limited to the content in the above specification. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the scope of the present invention.

Claims

1. A mining scraper conveyor with the function of preventing wet and sticky materials, characterized in that, Comprising: A pusher plate (1) with chains (2) arranged on both sides thereof. Two adjacent pusher plates (1) cooperate with two chains (2) to enclose a middle stockpiling area (3); Push rods (4) arranged in multiple rows along the conveying direction on the outer side of the chain (2). The distance between two adjacent rows of push rods (4) is the same, and the push rods (4) divide the area between two adjacent pusher plates (1) into multiple lateral stockpiling areas (5); Lateral hoppers (6) located directly above the lateral stockpiling areas (5) for introducing first coal blocks with lengths, widths, and thicknesses close to each other into the lateral stockpiling areas (5), and the maximum length of the first coal blocks is less than the distance between two adjacent push rods (4); A middle hopper (7) located directly above the middle stockpiling area (3) capable of introducing pulverized coal and second coal blocks into the middle stockpiling area (3), where the second coal blocks are other coal blocks except the above-mentioned first coal blocks; Two middle discharge openings (8) and (9) for pulverized coal discharging and second coal block discharging respectively, which are arranged front and back at the top of the middle hopper (7); A rotating plate (10) rotatably installed in the middle hopper (7) through a rotating shaft. The two ends of the rotating plate (10) are respectively located in the middle discharge opening (8) and the middle second discharge opening (9). The rotating plate (10) can block the middle discharge opening (8) under its own weight bias and keep the middle second discharge opening (9) open, so that the middle hopper (7) preferentially provides the second coal blocks for the middle stockpiling area (3).

2. The coal mining scraper conveyor with the function of preventing wet and sticky materials according to claim 1, wherein It further includes a screening trough (11) with a front end inclined downward. A first sieve plate (12) and a second sieve plate (13) are arranged up and down in the screening trough (11). A first guide plate (14) is arranged between the first sieve plate (12) and the second sieve plate (13). Circular screening holes are evenly arranged on the first sieve plate (12). The distance between the first guide plate (14) and the second sieve plate (13) is adapted to the outer diameter of the circular screening holes. A first channel (15) and a second channel (16) for the second coal blocks to enter the middle hopper (7) are respectively formed above the first sieve plate (12) and between the first guide plate (14) and the second sieve plate (13). The rear end of the first guide plate (14) is an inclined surface inclined forward from the outside. The lateral side of the screening trough (11) arches upward from the top of the second sieve plate (13) and corresponds to the area where the first guide plate (14) is located to form a lateral channel (17) for the first coal blocks to enter the lateral hopper (6). A third channel (18) for pulverized coal to enter the middle discharge opening (8) is formed between the inner bottom wall of the screening trough (11) and the second sieve plate (13).

3. The mining scraper conveyor with the function of preventing wet and sticky materials according to claim 2, wherein, 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). A fourth channel (19) with its rear end communicating with the second channel (16) is arranged in the lower cavity (7.3), and the front end of the fourth channel (19) communicates with the middle two discharging openings (9). A middle notch (20) communicating with the fourth channel (19) is formed at the rear side of the bottom of the upper cavity (7.2), and fifth channels (21) communicating with the side hoppers (6) are arranged on both sides of the bottom of the upper cavity (7.2). A sweeping plate (22) capable of sweeping the coal blocks in the upper cavity (7.2) into the fifth channels (21) is arranged in the upper cavity (7.2). The top end of the sweeping plate (22) is connected to a motor (23) installed at the top of the middle hopper (7).

4. The mining scraper conveyor with the function of preventing wet and sticky materials according to claim 3, characterized in that, First arc-shaped guide grooves (24) and second arc-shaped guide grooves (25) are respectively arranged on both side walls of the upper cavity (7.2). A partition plate (26) is arranged in the middle of the outlet of the first channel (15). The rear end openings of the first arc-shaped guide grooves (24) and the second arc-shaped guide grooves (25) communicate with the two regions on both sides of the front end outlet of the first channel (15) located on both sides of the partition plate (26). The rear end openings of the first arc-shaped guide grooves (24) and the second arc-shaped guide grooves (25) are respectively located at the front end and the rear end of the two fifth channels (21). The first arc-shaped guide grooves (24) and the second arc-shaped guide grooves (25) are both arranged with their front ends inclined downward, and the heights of the first arc-shaped guide grooves (24) and the second arc-shaped guide grooves (25) are greater than that of the sweeping plate (22).

5. The mining scraper conveyor with the function of preventing wet and sticky materials according to claim 2, characterized in that, The bottom outlet of the side hopper (6) is divided into sub-material cavities (27) corresponding to the side stockpiling areas (5) between adjacent two pushing plates (1) one by one, and the sub-material cavities (27) are in a stepped shape with the height increasing from front to back. A baffle plate (28) capable of opening or closing the bottom outlet of the sub-material cavity (27) is inserted into the side of the side hopper (6). A second material guiding plate (29) with its rear end inclined downward is arranged inside the side hopper (6), and the rear end of the second material guiding plate (29) is directly above the top entrance of the last sub-material cavity (27).

6. The mining scraper conveyor with the function of preventing wet and sticky materials according to claim 5, characterized in that, The rear end of the baffle (28) is rotatably connected to a transverse rod (30). A longitudinal rod (31) is slidably sleeved at one end of the transverse rod (30) away from the baffle (28). The longitudinal rod (31) rotates outward by 90° to move the baffle (28) out of the bottom of the sub-material cavity (27) and open the sub-material cavity (27). The longitudinal rod (31) is in an "L" shape. On both sides of the top of the push plate (1), there are fixed ejector rods (32). When the ejector rods (32) pass through the bottom horizontal part of the longitudinal rod (31), they drive the longitudinal rod to rotate outward by 90°. A spiral groove (33) is arranged on the surface of the longitudinal rod (31). A sleeve rod (34) which can be lifted and is sleeved outside the longitudinal rod (31) is installed on the middle hopper (7). A slider (35) which is slidably matched with the spiral groove (33) is fixedly arranged in 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).

7. The mining scraper conveyor with the function of preventing wet and sticky materials according to claim 6, characterized in that, A lateral insertion plate (37) which is inserted into the lateral channel (17) from bottom to top is fixedly connected to the sleeve rod (34). When the sleeve rod (34) moves upward to the highest position, the lateral insertion plate (37) blocks the outlet of the lateral channel (17).

8. The mining scraper conveyor with the function of preventing wet and sticky materials according to claim 6, characterized in that A middle insertion plate (38) is inserted into the inside of the rear end of the top part (7.1) corresponding to the outlet part of the first channel (15). A connecting rod (39) with the top fixedly connected to the top of the sleeve rod (34) is fixedly connected to the outer side of the top surface of the middle insertion plate (38). When the sleeve rod (34) is in the highest position, the middle insertion plate (38) blocks the first channel (15).

9. The mining scraper conveyor with the function of preventing wet and sticky materials according to claim 2, 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 arranged on the side wall of the screening groove (11), and the lifting plate (40) is connected with a vibration motor (41).

10. The mining scraper conveyor with the function of preventing wet and sticky materials according to claim 2, characterized in that, The rear end of the screening groove (11) is connected with a feeding hopper (42). The bottom of the feeding hopper (42) is connected with a machine frame (43). The lateral hopper (6) is fixedly installed on the machine frame (43), and the middle hopper (7) is fixedly connected with the lateral hopper (6).

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