Coking device for lignite blending

Abstract

The invention discloses a coking device for lignite blending, and relates to the technical field of coal coking, the coking device comprises a coking furnace, the top of the coking furnace is fixedly provided with a box body, the two sides of the box body are both provided with storage boxes, the bottoms of the storage boxes are fixedly provided with hollow cylinders, and the sides, away from each other, of the two hollow cylinders are both fixedly provided with first servo motors; output shafts of the first servo motors penetrate through one side of the hollow cylinder and are fixedly provided with first augers; the two independent first servo motors are used for driving the augers at the bottom of the storage box respectively, the conveying amount of lignite and other coal types can be accurately controlled by adjusting the rotating speed of the motors, the deviation of the coal blending proportion is greatly reduced, it is ensured that the mixed coal meets the preset formula requirement all the time, and the coal blending efficiency is improved. Coke quality fluctuation caused by proportion imbalance is reduced from the source, stable performance of subsequent coking products is guaranteed, and the coal crushing and mixing effect is improved.

Description

Technical Field

[0001] This invention belongs to the field of coal coking technology, and more specifically, relates to a coking apparatus for blending lignite. Background Technology

[0002] Lignite blending is a targeted coal quality optimization process. Its core objective is to address the inherent defects of lignite, such as high moisture content, low calorific value, and low caking properties (used in coking applications). This is achieved by mixing lignite with other coal types that complement its properties (such as coking coal and bituminous coal used in coking, and bituminous coal used in combustion) in a precise, pre-defined ratio. Combined with necessary raw material pretreatment (such as drying and pulverizing), the final result is a blended coal whose key indicators, such as moisture content, ash content, caking properties, and calorific value, meet the requirements of subsequent industrial production (such as coking, power plant combustion, and chemical conversion). This process not only compensates for the performance shortcomings of lignite by blending with high-quality coal types, but also leverages the large reserves and low cost of lignite to reduce raw material costs. Furthermore, it ensures consistent blend quality through stable proportions, preventing fluctuations in the quality of a single coal type from impacting production.

[0003] In the lignite blending coking process, in order to ensure that the particle size of the coal entering the furnace meets the requirements of the coking reaction, the coal needs to be crushed and screened, and the unqualified material with excessive particle size is returned to the crushing area for reprocessing, forming a closed-loop process of crushing, screening, and return for re-crushing. From the perspective of equipment spatial layout adaptability, traditional equipment mostly uses inclined screw conveyors to achieve the return of unqualified material. Since the inclined screw conveyor needs to meet the functions of horizontal conveying and inclined lifting at the same time, its installation requires a long horizontal extension section and inclined transition section, which leads to a significant increase in the overall lateral dimension of the equipment. However, coking workshops are usually densely packed with equipment and have limited available space. The excessively large lateral dimension not only makes it difficult to achieve a compact arrangement of storage boxes, boxes, and coking furnaces, but also easily causes spatial interference with other equipment in the workshop, increasing the difficulty of equipment installation and workshop layout.

[0004] From the perspective of material conveying stability and adaptability, traditional inclined auger conveying structures still have problems such as excessive material residue and high risk of blockage. In the process of coking with lignite blending, the unqualified material returned is granular coal that has been preliminarily crushed, not pure powder. Moreover, the coal itself contains a small amount of adhesive components. The conveying path of the inclined auger has inflection points at both horizontal and inclined sides. At the inflection points, the material is prone to accumulate due to gravity. In addition, the adhesiveness of the coal makes it very easy to form pipe blockage. At the same time, during inclined conveying, the lateral friction between the coal and the auger pipe wall and the spiral blades is large. Some coal is easy to adhere to the pipe wall and form residue, which not only causes material waste but also requires regular shutdown for cleaning, affecting the continuous operation efficiency of the equipment. In addition, during inclined conveying, the pushing force of the spiral blades on the coal must overcome both the gravity and friction of the material, which can easily lead to increased conveying power loss and further reduce conveying stability.

[0005] Meanwhile, the box body has integrated core components such as crushing wheels, deflectors, and filters. These components are mostly distributed horizontally to adapt to the coal processing flow. The conveying path of the inclined auger needs to cross the surrounding area of ​​the box body horizontally or diagonally, which can easily cause spatial conflicts with the internal core components. It is necessary to design a complex avoidance structure, which not only increases the manufacturing cost of the equipment, but may also cause the conveying path to bend due to the avoidance structure, further reducing the return efficiency. In view of this, the present invention proposes a coking device for lignite blending. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a coking apparatus for blending lignite. This addresses the shortcomings of traditional blending methods, which rely heavily on manual experience or simple conveying equipment to adjust coal quantity. These methods fail to accurately control the conveying ratio of lignite to other coal types, often leading to deviations from preset values ​​and directly impacting the stability of subsequent coking reactions, resulting in coke quality fluctuations. Furthermore, the crushing and mixing of coal is inadequate. Traditional crushing equipment often uses unidirectional crushing or impact, making it difficult to uniformly crush large coal pieces into suitable particle sizes. The mixing process often employs simple stirring, with coal flowing only horizontally, hindering deep integration of lignite with other coal types and resulting in poor mixing uniformity. This further affects the consistency of pyrolysis during coking. The coal particle size screening process suffers from low efficiency and insufficient precision. Traditional screening devices have low vibration frequencies and unstable amplitudes, failing to efficiently separate fine coal particles that meet coking requirements. Some oversized coarse coal pieces easily mix into the qualified material, leading to incomplete local reactions during coking. The screened coarse coal pieces are often discarded, resulting in resource waste and increased raw material costs.

[0007] A coking unit for blending lignite includes:

[0008] A coking oven, wherein a box is fixedly installed on the top of the coking oven, and a storage box is provided on both sides of the box. A hollow cylinder is fixedly installed at the bottom of the storage box. A first servo motor is fixedly installed on the side of the two hollow cylinders that are far apart from each other. The output shaft of the first servo motor passes through one side of the hollow cylinder and is fixedly installed with a first auger.

[0009] Two crushing wheels are symmetrically and rotatably installed inside the housing. A base plate is fixedly installed inside the housing and below the two crushing wheels. Fixed rods are symmetrically and rotatably installed inside the base plate. Multiple round rods are fixedly installed on each of the two fixed rods. A lever plate is fixedly installed on each of the multiple round rods. A filter screen is slidably installed inside the housing and below the base plate. A discharge hopper is fixedly installed on the front side of the housing and on one side of the filter screen. A round pipe is fixedly installed at the discharge end of the discharge hopper. A second auger is rotatably installed inside the round pipe.

[0010] A power assembly, located at the rear of the housing, is used to drive the two crushing wheels and two fixed rods to rotate and to move the filter screen.

[0011] Four spring-loaded components are located at the four corners of the bottom of the filter screen and are used to spring the filter screen back.

[0012] Preferably, the power assembly includes two second gears symmetrically arranged on the rear side of the housing. A first gear is positioned below each of the two second gears. A first support plate is fixedly installed on the rear side of the housing, above one of the second gears. A second servo motor is fixedly installed at the bottom of the first support plate. The output shaft of the second servo motor is fixedly connected to one of the second gears. Two crushing wheels penetrate the housing and are fixedly connected to the two second gears respectively. Two fixing rods penetrate the housing and are fixedly connected to the two first gears respectively. A fourth gear is positioned below the other first gear. A third gear is positioned below the fourth gear. A round shaft is fixedly installed on the side of the third gear near the housing. One end of the round shaft penetrates the housing and is fixedly installed with a second bevel gear. The bottom end of the second auger penetrates a round tube and is fixedly installed with a first bevel gear. A limiting round block is fixedly installed on the round shaft within one side of the housing's inner wall. A U-shaped frame is positioned on the other side of the housing's inner wall. The top of the U-shaped frame is fixedly connected to the bottom of the filter screen. The round shaft is located within a cam, and a cam is fixedly installed on the round shaft within the U-shaped frame.

[0013] Preferably, two second gears mesh, one of which meshes with one of the first gears, the other second gear meshes with the other first gear, the other first gear meshes with a fourth gear, and the fourth gear meshes with a third gear.

[0014] Preferably, the first bevel gear meshes with the second bevel gear, the circular shaft is rotatably connected to the housing, the fourth gear is rotatably connected to the housing, and the limiting circular block is rotatably connected to the housing.

[0015] Preferably, the U-shaped frame is slidably connected to the box body, and the cam contacts both sides of the inner wall of the U-shaped frame.

[0016] Preferably, the rebound assembly includes a slide bar, which is fixedly installed at the bottom of the filter screen. Each slide bar is fitted with a sliding frame, and a spring is fixedly installed inside the sliding frame at the bottom end of the slide bar. All four slide bars are fixedly connected to the housing.

[0017] Preferably, the filter screen is tightly welded to the slide rod, and the slide rod is slidably connected to the sliding frame.

[0018] Preferably, the first auger is rotatably connected to the hollow cylinder, the output shaft of the first servo motor is rotatably connected to the hollow cylinder, and the storage bin is connected to the hollow cylinder and the box body.

[0019] Preferably, the bottom of the base plate is provided with a feeding groove, the fixing rod is rotatably connected to the box body, the cross-section of the round tube is L-shaped, and the discharge end of the round tube extends to the top of the box body.

[0020] Preferably, the plurality of circular rods are arranged in a linear, equally spaced structure, and the plurality of levers are arranged in an inclined structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The core functions of the device are crushing, screening, and reprocessing of substandard materials for re-crushing. Substandard materials need to flow back from the filter screen at the bottom of the housing through the discharge hopper to the crushing area at the top. If an inclined auger is used, a longer horizontal and inclined installation space is required, significantly increasing the overall lateral dimension of the equipment. A vertical design, however, can directly utilize the longitudinal height of the device without requiring additional horizontal space, allowing for a more compact longitudinal arrangement of the storage bins, housing, and coking furnace. This is particularly suitable for densely packed equipment and limited space in coking workshops, avoiding interference with internal components. The housing already integrates horizontally distributed core components such as crushing wheels, deflectors, and filters. The conveying path of an inclined auger is prone to interference with these components. To avoid space conflicts, an additional obstacle avoidance structure needs to be designed. The vertical auger turns through an L-shaped circular tube and runs longitudinally through the side of the device. The conveying path is far away from the core components inside the box, eliminating the need for complex obstacle avoidance design and simplifying the overall structural layout. This device conveys crushed coal, not pure powder. With the vertical design, the material enters the circular tube downwards with the assistance of gravity. When the auger pushes upwards, the weight of the coarse material can partially offset the lateral friction force of the spiral push, reducing material residue on the tube wall. At the same time, the material in the vertical pipe falls and rises vertically, and there is no inflection point for material accumulation in the flow path. Compared with inclined pipes, the risk of blockage is lower, especially suitable for coal with a small amount of adhesiveness.

[0023] Multi-stage crushing and uniform mixing enhance crushing effect and efficiency. The power component drives two crushing wheels to rotate synchronously in opposite directions. Through shearing and extrusion, large pieces of raw materials are efficiently crushed. The inclined baffle plate at the bottom plate rotates with the fixed rod, which uniformly mixes the crushed raw materials and conveys them to the filter screen, avoiding insufficient crushing or screening blockage caused by raw material accumulation, and greatly improving crushing uniformity and overall processing efficiency.

[0024] The integrated power design saves energy and reduces consumption while simplifying the structure. A single second servo motor drives the crushing wheel, feeding the conveyor plate, vibrating the filter screen, and conveying the circulating auger in a synchronous manner through gear linkage. This replaces the independent drive mode of multiple power sources, which not only reduces the energy consumption and manufacturing cost of the equipment, but also simplifies the structural layout of the device and reduces the space occupied by the equipment.

[0025] Stable rebound structure and reasonable connection design improve operational reliability. The rebound component adopts a sliding rod and spring combination structure to provide stable and controllable vibration reset force for the filter screen, avoiding loosening of parts during vibration. The connection design between the storage box and the hollow cylinder, the box body, and the L-shaped return structure of the round tube ensure smooth material conveying path, reduce the risk of material jamming and blockage, and reduce equipment maintenance frequency.

[0026] High-frequency vibrating screening and circulation ensure that the raw material particle size meets the standards. Relying on the synergistic effect of cam drive and rebound component, the filter screen generates high-frequency vibration, which significantly improves the particle size screening efficiency. At the same time, unqualified raw materials are returned to the box for re-crushing through the circulation system composed of discharge hopper, circular pipe and second screw conveyor, which completely prevents unqualified raw materials from entering the coking furnace and ensures the qualified particle size of coking raw materials.

[0027] The storage bins store lignite and blending coal raw materials separately. With the first servo motor driving the first auger spiral pushing structure, the two raw materials are quantitatively and uniformly conveyed. This not only accurately controls the blending ratio to meet the requirements of the coking process, but also completes the initial mixing during the conveying process, reducing the time spent on subsequent mixing processes and improving the efficiency of raw material pretreatment. Attached Figure Description

[0028] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0029] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0030] Figure 3 This is a detailed structural diagram of the internal structure of the storage box and hollow cylinder of the present invention;

[0031] Figure 4 This is one of the detailed structural diagrams of the internal structure of the box in this invention;

[0032] Figure 5 This is the second detailed structural diagram of the internal structure of the box of the present invention;

[0033] Figure 6 This is the invention Figure 5 Enlarged structural diagram at point A in the middle;

[0034] Figure 7 This is a schematic diagram of the U-shaped frame area structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the fixing rod area of ​​the present invention;

[0036] Figure 9 This is a schematic diagram of the base plate area structure of the present invention;

[0037] Figure 10This is a schematic diagram of the filter area structure of the present invention;

[0038] Figure 11 This is the invention Figure 10 Enlarged structural diagram at point B.

[0039] In the figure, the correspondence between the component names and the attached drawing numbers is as follows: 1. Coking furnace; 2. Box body; 3. Storage box; 4. First servo motor; 5. Hollow cylinder; 6. U-shaped frame; 7. Second servo motor; 8. First bearing plate; 9. First gear; 10. Second gear; 11. Round tube; 12. Discharge hopper; 13. First bevel gear; 14. First auger; 15. Crushing wheel; 16. Base plate; 17. Second bevel gear; 18. Filter screen; 19. Second auger; 20. Round rod; 21. Baffle plate; 22. Discharge chute; 23. Sliding frame; 24. Spring; 25. Slide rod; 26. Cam; 27. Fixed rod; 28. Third gear; 29. ​​Fourth gear; 30. Round shaft; 31. Limiting round block. Detailed Implementation

[0040] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0041] Please see Figures 1-11 The present invention provides a coking apparatus for blending lignite, comprising:

[0042] A coking furnace 1 has a housing 2 fixedly installed on its top. Storage bins 3 are located on both sides of the housing 2. Hollow cylinders 5 are fixedly installed at the bottom of the storage bins 3. First servo motors 4 are fixedly installed on the opposite sides of the two hollow cylinders 5. The output shafts of the first servo motors 4 pass through one side of each hollow cylinder 5 and are fixedly mounted with first augers 14. Two crushing wheels 15 are symmetrically and rotatably installed inside the housing 2. A base plate 16 is fixedly installed inside the housing 2, below the two crushing wheels 15. Fixing rods 27 are symmetrically and rotatably installed inside the base plate 16. Multiple round rods 20 are fixedly installed on each of the two fixing rods 27. Multiple round rods 20 are fixedly mounted with levers 21. A filter screen 18 is slidably mounted inside the housing 2 and below the bottom plate 16. A discharge hopper 12 is fixedly mounted on the front side of the housing 2 and on one side of the filter screen 18. A round tube 11 is fixedly mounted at the discharge end of the discharge hopper 12. A second auger 19 is rotatably mounted inside the round tube 11. A power assembly is located on the rear side of the housing 2 and is used to drive the two crushing wheels 15 and the two fixed rods 27 to rotate and to drive the filter screen 18 to move. Four rebound assemblies are located at the four corners of the bottom of the filter screen 18 and are used to rebound the filter screen 18.

[0043] The storage bin 3 stores lignite and blending raw materials. When the first servo motor 4 is started, its output shaft drives the first auger 14 to rotate inside the hollow cylinder 5. Utilizing the spiral pushing action of the first auger 14, the raw materials in the storage bin 3 are quantitatively and evenly transported to the box body 2, achieving preliminary mixing and conveying of the two raw materials. After the second servo motor 7 of the power unit is started, its output shaft drives a fixed second gear 10 to rotate. Because the two second gears 10 mesh with each other, the other second gear 10 rotates synchronously in the opposite direction. The two crushing wheels 15 are fixedly connected to the two second gears 10 respectively, and therefore, as they rotate in the opposite direction with the second gears 10, they shear the mixed raw materials transported from the storage bin 3 to the box body 2. The crushing process breaks large pieces of raw material into smaller particles, which then fall onto the base plate 16. In the power assembly, two second gears 10 mesh with two first gears 9, causing the first gears 9 to rotate synchronously with the second gears 10. The fixed rod 27 is fixedly connected to the first gear 9, and thus, as the first gear 9 rotates, it drives the multiple round rods 20 and the lever plate 21 on the fixed rod 27 to rotate. Since the lever plate 21 has an inclined structure, its rotation can push the crushed raw material on the base plate 16 towards the feed chute 22 at the bottom of the base plate 16, allowing the raw material to fall evenly onto the filter screen 18 below. In the power assembly, another first gear 9 meshes with a fourth gear 29, and the fourth gear 29 meshes with a third gear 28. Therefore, the third gear 28 rotates with the first gear 9, driving the fixed circular shaft 30 to rotate. The cam 26 on the circular shaft 30 is located inside the U-shaped frame 6 and contacts both sides of the inner wall of the U-shaped frame 6. Therefore, when the cam 26 rotates, it drives the U-shaped frame 6 to slide up and down along the box 2 by squeezing the inner wall of the U-shaped frame 6. Among the four rebound components at the bottom of the filter screen 18, the slide rod 25 is slidably connected to the sliding frame 23. The spring 24 inside the sliding frame 23 applies an upward elastic force to the slide rod 25. When the cam 26 pushes the U-shaped frame 6 to move the filter screen 18 down, the spring 24 is compressed. When the cam 26 rotates to the non-squeezing position, the spring 24 rebounds and pushes the slide rod 25 up, driving the filter screen 18 to reset. The cam 26 drives the filter screen 18 to rotate up and down. The rebound of spring 24 causes filter screen 18 to vibrate at high frequency. Raw materials with qualified particle size fall through the pores of filter screen 18 into the bottom of box 2 and eventually into coking furnace 1. Raw materials with unqualified particle size remain on filter screen 18. Under the action of vibration, the unqualified raw materials on filter screen 18 are pushed to discharge hopper 12 and fall into circular tube 11. In the power assembly, the second bevel gear 17 on the circular shaft 30 meshes with the first bevel gear 13 at the bottom of the second auger 19. Therefore, the second auger 19 rotates with the circular shaft 30 and uses the spiral pushing action to transport the unqualified raw materials in the circular tube 11 upward, so that the raw materials fall back into box 2 and are crushed and screened again by crushing wheel 15, forming a cycle process to ensure that the particle size of the raw materials meets the standards.

[0044] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0045] The power assembly includes two second gears 10, symmetrically arranged on the rear side of the housing 2. A first gear 9 is positioned below each of the two second gears 10. A first support plate 8 is fixedly installed on the rear side of the housing 2, above one of the second gears 10. A second servo motor 7 is fixedly installed at the bottom of the first support plate 8. The output shaft of the second servo motor 7 is fixedly connected to one of the second gears 10. Two crushing wheels 15 penetrate the housing 2 and are fixedly connected to the two second gears 10 respectively. Two fixing rods 27 penetrate the housing 2 and are fixedly connected to the two first gears 9 respectively. A first gear 9 is positioned below the other first gear 9. There is a fourth gear 29, and a third gear 28 is provided below the fourth gear 29. A round shaft 30 is fixedly installed on the side of the third gear 28 near the housing 2. One end of the round shaft 30 passes through the housing 2 and a second bevel gear 17 is fixedly installed. The bottom end of the second auger 19 passes through the round tube 11 and a first bevel gear 13 is fixedly installed. A limiting round block 31 is fixedly installed on the round shaft 30 and in the inner wall of one side of the housing 2. A U-shaped frame 6 is provided in the inner wall of the other side of the housing 2. The top of the U-shaped frame 6 is fixedly connected to the bottom of the filter screen 18. The round shaft 30 is located in the cam 26, and the cam 26 is fixedly installed on the round shaft 30 and in the U-shaped frame 6.

[0046] In the power assembly, after the second servo motor 7 starts, its output shaft drives a fixed second gear 10 to rotate. Because the two second gears 10 mesh with each other, the other second gear 10 rotates synchronously in the opposite direction. The two crushing wheels 15 are fixedly connected to the two second gears 10 respectively. Therefore, as the second gears 10 rotate in the opposite direction, they shear, compress, and crush the mixed raw materials transported from the storage box 3 to the box 2, crushing large pieces of raw materials into smaller particles. The crushed raw materials fall onto the bottom plate 16. In the power assembly, the two second gears 10 mesh with the two first gears 9 respectively. Therefore, the first gears 9 rotate synchronously with the second gears 10. The fixed rod 27 is fixedly connected to the first gear 9. Therefore, as the first gear 9 rotates, it drives the multiple round rods 20 and the lever plate 21 on the fixed rod 27 to rotate. Since the lever plate 21 has an inclined structure, during its rotation, it can push the crushed raw materials on the bottom plate 16 toward the feed chute 22 at the bottom of the bottom plate 16, so that the raw materials fall evenly onto the filter screen 18 below. In the power assembly, the other first gear 9 meshes with the first gear 10. The fourth gear 29 meshes with the third gear 28, so the third gear 28 rotates with the first gear 9, driving the fixed circular shaft 30 to rotate. The cam 26 on the circular shaft 30 is located inside the U-shaped frame 6 and contacts both sides of the inner wall of the U-shaped frame 6. Therefore, when the cam 26 rotates, it squeezes the inner wall of the U-shaped frame 6, driving the U-shaped frame 6 to slide up and down along the box 2. The filter screen 18 is generated. Raw materials with qualified particle size fall into the bottom of the box 2 through the pores of the filter screen 18 and finally enter the coking furnace 1; raw materials with unqualified particle size... The material remains on the filter screen 18. The unqualified material on the filter screen 18 is pushed to the discharge hopper 12 under the action of vibration and falls into the round tube 11. In the power assembly, the second bevel gear 17 on the round shaft 30 meshes with the first bevel gear 13 at the bottom of the second auger 19. Therefore, the second auger 19 rotates with the round shaft 30 and uses the spiral pushing action to transport the unqualified material in the round tube 11 upward, so that the material falls back into the box 2 and is crushed and screened again by the crushing wheel 15 to form a cycle process to ensure that the particle size of the material meets the standard.

[0047] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0048] Two second gears 10 mesh with each other, one of the second gears 10 meshes with one of the first gears 9, the other second gear 10 meshes with the other first gear 9, the other first gear 9 meshes with the fourth gear 29, and the fourth gear 29 meshes with the third gear 28.

[0049] Specifically, under the action of meshing, rotating one of the second gears 10 can drive the other second gear 10 to rotate, ensuring that one of the second gears 10 can drive one of the first gears 9 to rotate, ensuring that the other second gear 10 can drive the other first gear 9 to rotate, ensuring that the other first gear 9 can drive the fourth gear 29 to rotate, and ensuring that the fourth gear 29 can drive the third gear 28 to rotate.

[0050] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0051] The first bevel gear 13 meshes with the second bevel gear 17, the round shaft 30 is rotatably connected to the housing 2, the fourth gear 29 is rotatably connected to the housing 2, and the limiting round block 31 is rotatably connected to the housing 2.

[0052] Specifically, under the action of meshing, the rotating first bevel gear 13 can drive the second bevel gear 17 to rotate, the round shaft 30 can rotate normally in the housing 2, the fourth gear 29 can rotate on the housing 2, and the limiting round block 31 can rotate normally in the housing 2.

[0053] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0054] The U-shaped frame 6 is slidably connected to the housing 2, and the cam 26 contacts the inner walls of the U-shaped frame 6 on both sides.

[0055] Specifically, it ensures that the U-shaped frame 6 can slide normally within the housing 2, and that the rotation of the cam 26 can continuously drive the U-shaped frame 6 to perform reciprocating linear motion within the housing 2. This reciprocating motion can cause the related components connected to the U-shaped frame 6 to produce regular movements.

[0056] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0057] The rebound assembly includes a slide rod 25, which is fixedly installed at the bottom of the filter screen 18. Each slide rod 25 is fitted with a sliding frame 23, and a spring 24 is fixedly installed inside the sliding frame 23 at the bottom end of the slide rod 25. All four slide rods 25 are fixedly connected to the housing 2.

[0058] Among the four rebound components at the bottom of the filter screen 18, the slide rod 25 is slidably connected to the sliding frame 23. The spring 24 inside the sliding frame 23 applies an upward elastic force to the slide rod 25. When the cam 26 pushes the U-shaped frame 6 to move the filter screen 18 downward, the spring 24 is compressed. When the cam 26 rotates to the non-compression position, the spring 24 rebounds and pushes the slide rod 25 upward, causing the filter screen 18 to reset. This is achieved through the cam 26 driving and the spring 24 rebounding in coordination.

[0059] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0060] The filter screen 18 is tightly welded to the slide rod 25, and the slide rod 25 is slidably connected to the sliding frame 23.

[0061] This ensures the structural stability of the filter screen 18 and the slide bar 25, and guarantees that the slide bar 25 can slide normally within the sliding frame 23.

[0062] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0063] The first auger 14 is rotatably connected to the hollow cylinder 5, the output shaft of the first servo motor 4 is rotatably connected to the hollow cylinder 5, and the storage box 3 is connected to the hollow cylinder 5 and the box body 2.

[0064] Specifically, this ensures that the first auger 14 can rotate normally inside the hollow cylinder 5, that the output shaft of the first servo motor 4 can rotate normally inside the hollow cylinder 5, and that the material in the storage bin 3 can flow smoothly into the hollow cylinder 5, and then enter the box 2 from the hollow cylinder 5 for further processing.

[0065] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0066] The bottom of the base plate 16 is provided with a feeding groove 22, the fixing rod 27 is rotatably connected to the box body 2, the cross section of the round tube 11 is L-shaped, and the discharge end of the round tube 11 extends to the top of the box body 2.

[0067] The location of the feeding chute 22 is precisely calculated to ensure that the coal conveyed from the second auger 19 falls accurately into the chute, and that the fixing rod 27 can rotate normally inside the box 2, so as to ensure that the coal can be smoothly entered into the box 2 for subsequent processing.

[0068] The present invention provides a coking apparatus for blending lignite, which, in addition to the above-mentioned technical solution, also has the following technical features.

[0069] Multiple round rods 20 are arranged in a linear, equally spaced structure, and multiple levers 21 are arranged in an inclined structure.

[0070] The linear and evenly spaced structure of the multiple round rods 20 ensures that the deflector plates 21 are evenly distributed during rotation, thereby comprehensively and evenly agitating the coal on the filter screen 18. The inclined structure of the multiple deflector plates 21 can better push the coal during rotation, allowing it to pass smoothly through the filter screen 18, improving filtration efficiency, and also preventing the coal from accumulating on the filter screen 18 and causing blockage.

[0071] Working principle: Storage bin 3 stores lignite and blending raw materials respectively. The first servo motor 4 is started, and its output shaft drives the first auger 14 to rotate inside the hollow cylinder 5. Utilizing the spiral pushing action of the first auger 14, the raw materials in storage bin 3 are quantitatively and evenly conveyed into the box body 2, achieving preliminary mixing and conveying of the two raw materials. After the second servo motor 7 of the power assembly is started, its output shaft drives a fixed second gear 10 to rotate. Because the two second gears 10 mesh with each other, the other second gear 10 rotates synchronously in the opposite direction. The two crushing wheels 15 are fixedly connected to the two second gears 10 respectively, and therefore rotate in the opposite direction with the second gears 10, shearing, compressing, and crushing the mixed raw materials conveyed from storage bin 3 to box body 2, breaking large pieces of raw material into smaller particles. The crushed raw material falls onto the bottom plate 16. In the power assembly, the two second gears 10... The first gear 9 meshes with the second gear 10, so the first gear 9 rotates synchronously with the second gear 10. The fixed rod 27 is fixedly connected to the first gear 9, so as it rotates with the first gear 9, it drives the multiple round rods 20 and the lever 21 on the fixed rod 27 to rotate. Since the lever 21 has an inclined structure, it can push the crushed raw material on the bottom plate 16 to the feed trough 22 at the bottom of the bottom plate 16 during its rotation, so that the raw material falls evenly onto the filter screen 18 below. In the power assembly, another first gear 9 meshes with the fourth gear 29, and the fourth gear 29 meshes with the third gear 28. So as the third gear 28 rotates with the first gear 9, it drives the round shaft 30 fixed to it to rotate. The cam 26 on the round shaft 30 is located inside the U-shaped frame 6 and contacts both sides of the inner wall of the U-shaped frame 6. So when the cam 26 rotates, it drives the U-shaped frame 6 to slide up and down along the box 2 by squeezing the inner wall of the U-shaped frame 6.

[0072] In the four rebound components at the bottom of the filter screen 18, the slide rod 25 is slidably connected to the sliding frame 23. The spring 24 inside the sliding frame 23 applies an upward elastic force to the slide rod 25. When the cam 26 pushes the U-shaped frame 6 to move the filter screen 18 downward, the spring 24 is compressed. When the cam 26 rotates to the non-compression position, the spring 24 rebounds and pushes the slide rod 25 upward, causing the filter screen 18 to reset. Through the synergy of the cam 26 driving and the spring 24 rebounding, the filter screen 18 generates high-frequency vibration. Raw materials with qualified particle size fall through the pores of the filter screen 18 into the bottom of the housing 2, ultimately... The raw material enters the coking furnace 1; the unqualified raw material remains on the filter screen 18. Under the action of vibration, the unqualified raw material on the filter screen 18 is pushed to the discharge hopper 12 and falls into the circular tube 11. In the power assembly, the second bevel gear 17 on the circular shaft 30 meshes with the first bevel gear 13 at the bottom of the second auger 19. Therefore, the second auger 19 rotates with the circular shaft 30 and uses the spiral pushing action to convey the unqualified raw material in the circular tube 11 upward, so that the raw material falls back into the box 2, and is crushed and screened again by the crushing wheel 15 to form a cycle process to ensure that the raw material particle size meets the standard.

[0073] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A coking apparatus for blending lignite, characterized in that, include: A coking furnace (1) is provided with a box body (2) fixedly installed on the top of the coking furnace (1). Storage boxes (3) are provided on both sides of the box body (2). Hollow cylinders (5) are fixedly installed at the bottom of the storage boxes (3). A first servo motor (4) is fixedly installed on the side of the two hollow cylinders (5) that are far apart from each other. The output shaft of the first servo motor (4) passes through one side of the hollow cylinder (5) and is fixedly installed with a first auger (14). Two crushing wheels (15) are symmetrically rotated and installed inside the housing (2). A base plate (16) is fixedly installed inside the housing (2) and below the two crushing wheels (15). A fixing rod (27) is symmetrically rotated and installed inside the base plate (16). Multiple round rods (20) are fixedly installed on each of the two fixing rods (27). A lever plate (21) is fixedly installed on each of the multiple round rods (20). A filter screen (18) is slidably installed inside the housing (2) and below the base plate (16). A discharge hopper (12) is fixedly installed on the front side of the housing (2) and on one side of the filter screen (18). A round tube (11) is fixedly installed at the discharge end of the discharge hopper (12). A second auger (19) is rotatably installed inside the round tube (11). A power assembly located at the rear of the housing (2) is used to drive the two crushing wheels (15) and the two fixed rods (27) to rotate and to drive the filter screen (18) to move. Four rebound components are located at the four corners of the bottom of the filter screen (18) and are used to rebound the filter screen (18).

2. The coking apparatus for blending lignite as described in claim 1, characterized in that: The power assembly includes two second gears (10), which are symmetrically arranged on the rear side of the housing (2). A first gear (9) is provided below each of the two second gears (10). A first bearing plate (8) is fixedly installed on the rear side of the housing (2) and above one of the second gears (10). A second servo motor (7) is fixedly installed at the bottom of the first bearing plate (8). The output shaft of the second servo motor (7) is fixedly connected to one of the second gears (10). Two crushing wheels (15) penetrate the housing (2) and are fixedly connected to the two second gears (10) respectively. Two fixing rods (27) penetrate the housing (2) and are fixedly connected to the two first gears (9) respectively. A fourth gear is provided below the other first gear (9). (29) A third gear (28) is provided below the fourth gear (29). A round shaft (30) is fixedly installed on the side of the third gear (2) near the housing (2). One end of the round shaft (30) passes through the housing (2) and a second bevel gear (17) is fixedly installed. The bottom end of the second auger (19) passes through the round tube (11) and a first bevel gear (13) is fixedly installed. A limiting round block (31) is fixedly installed on the round shaft (30) and in the inner wall of one side of the housing (2). A U-shaped frame (6) is provided in the inner wall of the other side of the housing (2). The top of the U-shaped frame (6) is fixedly connected to the bottom of the filter screen (18). The round shaft (30) is located in the cam (26). A cam (26) is fixedly installed on the round shaft (30) and in the U-shaped frame (6).

3. A coking apparatus for blending lignite as described in claim 2, characterized in that: Two second gears (10) mesh with each other, one of the second gears (10) meshes with one of the first gears (9), the other second gear (10) meshes with the other first gear (9), the other first gear (9) meshes with the fourth gear (29), and the fourth gear (29) meshes with the third gear (28).

4. A coking apparatus for blending lignite as described in claim 2, characterized in that: The first bevel gear (13) meshes with the second bevel gear (17), the round shaft (30) is rotatably connected to the housing (2), the fourth gear (29) is rotatably connected to the housing (2), and the limiting round block (31) is rotatably connected to the housing (2).

5. A coking apparatus for blending lignite as described in claim 2, characterized in that: The U-shaped frame (6) is slidably connected to the box body (2), and the cam (26) contacts both sides of the inner wall of the U-shaped frame (6).

6. A coking apparatus for blending lignite as described in claim 1, characterized in that: The rebound assembly includes a slide rod (25), which is fixedly installed at the bottom of the filter screen (18). Each slide rod (25) is fitted with a sliding frame (23), and a spring (24) is fixedly installed inside the sliding frame (23) at the bottom end of the slide rod (25). All four slide rods (25) are fixedly connected to the housing (2).

7. A coking apparatus for blending lignite as described in claim 6, characterized in that: The filter screen (18) is tightly welded to the slide rod (25), and the slide rod (25) is slidably connected to the sliding frame (23).

8. A coking apparatus for blending lignite as described in claim 1, characterized in that: The first auger (14) is rotatably connected to the hollow cylinder (5), the output shaft of the first servo motor (4) is rotatably connected to the hollow cylinder (5), and the storage box (3) is connected to the hollow cylinder (5) and the box body (2).

9. A coking apparatus for blending lignite as described in claim 1, characterized in that: The bottom of the base plate (16) is provided with a feeding groove (22), the fixing rod (27) is rotatably connected to the box body (2), the cross section of the round tube (11) is L-shaped, and the discharge end of the round tube (11) extends to the top of the box body (2).

10. A coking apparatus for blending lignite as described in claim 1, characterized in that: The multiple round rods (20) are arranged in a linear, equally spaced structure, and the multiple levers (21) are arranged in an inclined structure.

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