Coal blending and pulverizing device for coking production

Abstract

The utility model relates to the technical field of coal blending and crushing, and discloses a coal blending and crushing device for coking production, which comprises a bearing table, a crushing and adjusting mechanism arranged on the top of the bearing table, the crushing and adjusting mechanism being used for crushing the coal, a bearing frame one arranged on the top of the crushing and adjusting mechanism, a screening mechanism arranged on the inner side of the bearing frame one, the screening mechanism being used for screening the coal, a collecting mechanism arranged on the inner side of the bearing table, a conveying mechanism arranged on the left side of the bearing table, and the crushing and adjusting mechanism comprising two mounting plates, the bottom of each of the two mounting plates being fixedly connected to the top right side of the bearing table. In the utility model, the reduction motor drives the sliding lead screw to drive the bearing block to move accurately, the dynamic adjustment of the gap between the two grinding wheels is realized, different coal quality and particle size requirements can be adapted in real time, high-quality coal material is provided for subsequent coking, and the production efficiency and the stability of the coke quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of coal blending and crushing technology, and in particular to a coal blending and crushing device for coking production. Background Technology

[0002] Coal blending in coking production involves mixing different grades of single coal, such as gas coal, fat coal, coking coal, and lean coal, in specific proportions. By optimizing the coal type combination, the caking and coking properties of each coal type are balanced. This process ensures coke quality while reducing production costs. Coal blending must be combined with the characteristics of the coke oven and downstream demand. The blended coal is mixed in proportion to ensure uniform melting and stable coking during coking, providing qualified raw materials for subsequent coke use in blast furnace ironmaking.

[0003] Coking production's coal blending and crushing device solves the problem of single-type coal performance by mixing different coal types in proportion and crushing them to a uniform particle size, thereby improving the strength and stability of coke. It can be adapted to a variety of coal materials, reducing production risks caused by coal quality fluctuations. At the same time, by controlling particle size distribution, it optimizes heat conduction and melting bonding in the coking process, thereby reducing coke oven energy consumption.

[0004] Traditional coking coal blending and crushing equipment relies heavily on manual mechanical adjustment, which is inaccurate and can cause asymmetry in the gaps between the two sides. This makes it difficult to adapt to changes in coal quality in real time. Adjusting the gap requires stopping the machine, interrupting production and resulting in low efficiency. It also leads to uneven particle size, affecting the uniformity of coal materials in subsequent coking, restricting the stability of coke quality, and making it difficult to meet the needs of high-efficiency production. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a coal blending and crushing device for coking production, which aims to improve the problems of existing technologies that rely heavily on manual mechanical adjustment, are difficult to adapt to changes in coal quality in real time, require machine shutdown for adjustment, interrupt production and have low efficiency, affect the uniformity of coal materials in subsequent coking, restrict the stability of coke quality, and are difficult to meet the needs of high-efficiency production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a coal blending and pulverizing device for coking production, comprising a support platform, a pulverizing adjustment mechanism being provided on the top of the support platform for pulverizing the blended coal, a support frame being provided on the top of the pulverizing adjustment mechanism, a screening mechanism being provided on the inner side of the support frame for screening the blended coal, a collecting mechanism being provided on the inner side of the support platform, and a conveying mechanism being provided on the left side of the support platform; The crushing and adjusting mechanism includes two mounting plates. The bottom of each mounting plate is fixedly connected to the front and rear ends of the top right side of the support platform. A reduction motor is fixedly connected to the top of each mounting plate. A sliding screw is fixedly connected to the output end of each reduction motor. A limit block is fixedly connected to the left end of each sliding screw. A support block is slidably connected to the outer side of each sliding screw. Grinding wheels are rotatably connected between adjacent limit blocks and support blocks. Multiple hammerhead protrusions are fixedly connected to the outer side of each grinding wheel. A rotating motor is fixedly connected to the front side of each limit block.

[0007] As a further description of the above technical solution: The screening mechanism includes multiple electromagnetic telescopic rods. The opposite sides of the multiple electromagnetic telescopic rods are fixedly connected to the left and right sides inside the support frame one. The output ends of the multiple electromagnetic telescopic rods are fixedly connected to the same support frame two. A coal blending screen is fixedly connected to the middle of the inner side of the support frame two. A guide inclined plate is fixedly connected to the bottom of the inner side of the support frame two. Anti-splash components are provided on the front and rear sides of the top of the support frame two. A metering component is provided on the right side of the top of the support frame two.

[0008] As a further description of the above technical solution: The splash-proof assembly includes two mounting blocks. The bottom of each mounting block is fixedly connected to the front and rear ends of the top of the second support frame. The top of each mounting block is fixedly connected to two support rods, and the tops of the multiple support rods are respectively fixedly connected to baffles.

[0009] As a further description of the above technical solution: The metering component includes a shock-absorbing pad, the bottom of which is fixedly connected to the top right side of the support frame two, and a meter is fixedly connected to the top of the shock-absorbing pad.

[0010] As a further description of the above technical solution: The collection mechanism includes a collection box, the outer side of which is slidably connected to the inner side of the support platform. The inner side of the support platform is provided with a placement groove. A handle is fixedly connected to the front side of the collection box, and a limit component is provided at the bottom of the collection box.

[0011] As a further description of the above technical solution: The limiting component includes sliders, the tops of which are fixedly connected to the bottom left and right sides of the collection box, and the inner bottom left and right ends of the support platform are provided with slide rails.

[0012] As a further description of the above technical solution: A controller is fixedly connected to the front right end of the support platform, and multiple shock-absorbing columns are provided between adjacent support platforms and support frame one.

[0013] As a further description of the above technical solution: The conveying mechanism includes a support frame, with the right side of the support frame positioned on the left side of the support platform. A slide rail is fixedly connected to the bottom inner side of the support frame, and multiple conveying rollers are rotatably connected between adjacent slide rails.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the sliding screw driven by the geared motor moves the bearing block precisely, realizing the dynamic adjustment of the gap between the two grinding wheels. It can adapt to different coal quality and particle size requirements in real time, and the gap can be adjusted without stopping the machine, ensuring production continuity. The hammer protrusions on the outer side of the grinding wheel enhance the crushing effect. The independent drive of the rotating motor ensures stable grinding force, improves crushing uniformity, provides high-quality coal for subsequent coking, and improves production efficiency and coke quality stability.

[0015] 2. In this utility model, the electromagnetic telescopic rod can drive the support frame to extend and retract back and forth, causing the coal blending screen to vibrate at high frequency, efficiently separating impurities in the blended coal, ensuring the purity of the coal. The amplitude and frequency of the multiple telescopic rods are adjustable to adapt to the screening requirements of impurities of different particle sizes. The guide inclined plate can quickly discharge the blended coal after screening, effectively reducing the interference of impurities in the subsequent crushing and coking processes, improving the quality of blended coal, laying the foundation for stable coke quality, and combining automation and practicality. Attached Figure Description

[0016] Figure 1 This is a perspective view of a coal blending and pulverizing device for coking production proposed in this utility model; Figure 2 This is a front view of a coal blending and pulverizing device for coking production proposed in this utility model; Figure 3 This is a schematic diagram of the structure of a shock-absorbing support column in a coal blending and crushing device for coking production proposed in this utility model; Figure 4 This is a structural exploded view of the collecting mechanism in a coal blending and crushing device for coking production proposed in this utility model; Figure 5 This is a structural breakdown diagram of the screening mechanism in a coal blending and crushing device for coking production proposed in this utility model.

[0017] Legend: 1. Support platform; 2. Support frame one; 3. Crushing and adjusting mechanism; 301. Mounting plate; 302. Gear motor; 303. Sliding screw; 304. Support block; 305. Limiting block; 306. Grinding wheel; 307. Hammer head protrusion; 308. Rotating motor; 4. Screening mechanism; 401. Electromagnetic telescopic rod; 402. Support frame two; 403. Coal blending screen; 404. Guide inclined plate; 405. Splash-proof assembly; 4051 4052. Mounting block; 4053. Support rod; 4054. Baffle; 406. Metering component; 4061. Shock-absorbing pad; 4062. Meter; 5. Collection mechanism; 501. Collection box; 502. Placement slot; 503. Handle; 504. Limiting component; 5041. Slider; 5042. Slide rail; 6. Controller; 7. Shock-absorbing support column; 8. Conveying mechanism; 801. Support frame; 802. Slide rail; 803. Conveying roller. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model provides a coal blending and pulverizing device for coking production, including a support platform 1, a pulverizing adjustment mechanism 3 on the top of the support platform 1 for pulverizing the blended coal, a support frame 2 on the top of the pulverizing adjustment mechanism 3, a screening mechanism 4 on the inner side of the support frame 2 for screening the blended coal, a collecting mechanism 5 on the inner side of the support platform 1 for collecting the ground blended coal, and a conveying mechanism 8 on the left side of the support platform 1 for conveying the blended coal. The crushing and adjusting mechanism 3 includes two mounting plates 301. The bottom of each mounting plate 301 is fixedly connected to the front and rear ends of the top right side of the support platform 1. A reduction motor 302 is fixedly connected to the top of each mounting plate 301. A sliding screw 303 is fixedly connected to the output end of each of the two reduction motors 302. A limit block 305 is fixedly connected to the left end of each of the two sliding screws 303. A support block 304 is slidably connected to the outer side of each of the two sliding screws 303. The two limit blocks 305 and the two support blocks 304... Grinding wheels 306 are rotatably connected to each other. Multiple hammerhead protrusions 307 are fixedly connected to the outer side of each grinding wheel 306. A rotating motor 308 is fixedly connected to the front side of the front limiting block 305. The sliding screw 303 is driven by the reduction motor 302, which drives the bearing block 304 to move, so as to realize the dynamic adjustment of the gap between the two grinding wheels 306. The gap can be adjusted without stopping the machine. The hammerhead protrusions 307 on the outer side of the grinding wheel 306 enhance the crushing effect. The rotating motor 308 is driven independently to ensure stable grinding force. Specifically, the crushing and adjusting mechanism 3 achieves efficient and precise coal crushing and gap adjustment. Two mounting plates 301 are vertically fixed to the front and rear ends of the top right side of the support platform 1, providing stable support. The output end of the reduction motor 302 on the top of the mounting plate 301 is rigidly connected to the sliding screw 303. When the motor starts, the sliding screw 303 rotates synchronously. The bearing block 304 on the outside of the sliding screw 303 and the screw form a screw transmission pair. When the sliding screw 303 rotates, the bearing block 304 moves smoothly along the axial direction. The limiting block 305 is fixed to the left end of the screw, limiting the movement range of the bearing block 304 and ensuring the safe operation of the mechanism. Two grinding wheels 306 are rotatably connected between two limit blocks 305 and two bearing blocks 304 via bearings, forming an adjustable crushing working area. When it is necessary to adjust the crushing gap, two geared motors 302 synchronously drive the sliding screw 303, causing the bearing blocks 304 to move towards or away from each other, realizing the dynamic adjustment of the right grinding wheel 306, while the left grinding wheel 306 rotates in a fixed position. This breaks through the limitation of traditional crushing equipment requiring the machine to be stopped for gap adjustment, and can be adjusted in real time according to the coal quality characteristics during the production process, significantly improving production efficiency. The hammerhead protrusions 307, evenly distributed on the outer side of the grinding wheel 306, are precision cast from high-chromium alloy. Their special trapezoidal structure and spiral arrangement cause the coal to be subjected to impact, compression, and shearing during the crushing process, greatly enhancing the crushing effect. The rotating motor 308 on the front side of the front limit block 305 is directly connected to the main shaft of the grinding wheel 306 through a coupling, independently driving the two grinding wheels 306 to rotate at a constant speed, ensuring stable crushing force and providing reliable technical support for coking production.

[0020] Reference Figure 1 , Figure 3 and Figure 5The screening mechanism 4 includes multiple electromagnetic telescopic rods 401. The opposite sides of the multiple electromagnetic telescopic rods 401 are fixedly connected to the left and right sides inside the support frame 2. The output ends of the multiple electromagnetic telescopic rods 401 are fixedly connected to the same support frame 2 402. A coal blending screen 403 is fixedly connected to the middle of the inner side of the support frame 2 402. A guide plate 404 is fixedly connected to the bottom of the inner side of the support frame 2 402. The electromagnetic telescopic rods 401 can drive the support frame 2 402 to extend and retract back and forth, causing the coal blending screen 403 to vibrate at high frequency, efficiently separating impurities in the blended coal, and ensuring the purity of the coal. The amplitude and frequency of the multiple electromagnetic telescopic rods 401 are adjustable to adapt to the screening requirements of impurities of different particle sizes. The guide plate 404 can quickly discharge the blended coal after screening. Anti-splash components 405 are provided on the front and rear sides of the top of the support frame 2 402. A metering component 406 is provided on the right side of the top of the support frame 2 402. Specifically, the coal blending and screening mechanism 4 in coking production achieves efficient impurity separation and coal flow guidance. Multiple electromagnetic telescopic rods 401 are symmetrically distributed on the left and right sides inside the support frame 1 2. The fixed end is firmly connected to the support frame 1 2, and the output end jointly supports the support frame 2 402. The distributed connection allows the driving force to be applied evenly, avoiding excessive local stress. When the electromagnetic telescopic rod 401 is working, it generates reciprocating thrust, which drives the bearing frame 402 to vibrate at high frequency. The amplitude and frequency can be flexibly adjusted by the control system to adapt to the screening requirements of different coal types. The coal blending screen 403 is made of high-strength stainless steel with a reasonable distribution of screen holes, which effectively intercepts gangue and iron block impurities. The special tensioning structure ensures that the screen remains flat during vibration and prevents the screen holes from deforming and affecting the effect. After the coal enters, qualified particles fall through the screen holes, while impurities are separated. The guide plate 404 is installed at the bottom of the support frame 402. It is inclined and the surface is treated with wear resistance. It can make the clean coal after screening slide down quickly and avoid accumulation and blockage. The mechanism significantly reduces the impurity content of the coal blend and provides strong support for improving the quality of coke.

[0021] Reference Figure 2 , Figure 3 and Figure 5The splash-proof component 405 includes two mounting blocks 4051. The bottom of the two mounting blocks 4051 is fixedly connected to the front and rear ends of the top of the second support frame 402. The top of the two mounting blocks 4051 is fixedly connected to two support rods 4052. The top of the multiple support rods 4052 is fixedly connected to baffles 4053 to prevent the batching material from splashing out during screening. The metering component 406 includes a shock-absorbing pad 4061. The bottom of the shock-absorbing pad 4061 is fixedly connected to the right side of the top of the second support frame 402. The top of the shock-absorbing pad 4061 is fixedly connected to a metering device 4062 for metering. The collecting mechanism 5 includes a collecting box 501. The outer side of the collecting box 501 is slidably connected to the inner side of the support platform 1. The inner side of the support platform 1 is provided with a placement groove 502. The front side of the collecting box 501 is fixedly connected to a handle 503 for collecting the ground coal. The bottom of the collecting box 501 is provided with a limit component 504. Specifically, in the splash-proof component 405, two mounting blocks 4051 are fixed to the front and rear ends of the top of the support frame 402, respectively, and two support rods 4052 extend from each to support the baffle 4053. The baffle 4053 is made of high-strength engineering plastic, with a smooth surface and a certain degree of elasticity. When the high-frequency vibration of the screen causes coal to splash, the baffle 4053 can effectively intercept and guide the material back to the screen surface, preventing splashing and causing waste and environmental pollution. The metering component 406 achieves precise metering through the shock-absorbing pad 4061 and the metering device 4062. The shock-absorbing pad 4061 is made of composite rubber material with an embedded metal skeleton, which can effectively absorb the vibration energy during the screening process and provide stable support. The metering device 4062 uses a high-precision pressure sensor to monitor the weight of the coal after screening in real time. The data is transmitted to the control system to automatically adjust the feed rate, ensure the accurate coal blending ratio, and improve the stability of coal blending quality. The collection box 501 of the collection mechanism 5 is slidably connected to the inner side of the support platform 1 via a guide rail. The placement slot 502 provides placement space for the collection box 501, ensuring seamless connection with the discharge port. The handle 503 has an anti-slip surface, making it easy for operators to quickly replace the collection box 501. The bottom limiting component 504 prevents shaking during transportation. When unloading, simply pull the handle 503 lightly, making operation simple and efficient. The volume of the collection box 501 is customized according to the production scale and can hold all the coal material screened in a single batch. The box body is welded from wear-resistant steel plate, and the inner wall is coated with Teflon to reduce material adhesion and make cleaning more convenient, providing reliable back-end support for coking production.

[0022] Reference Figure 1 , Figure 3 and Figure 4The limiting component 504 includes a slider 5041, the tops of the two sliders 5041 are fixedly connected to the bottom left and right sides of the collection box 501, the inner bottom left and right ends of the support platform 1 are provided with slide rails 5042, the limiting component 504 includes a slider 5041, the tops of the two sliders 5041 are fixedly connected to the bottom left and right sides of the collection box 501, the inner bottom left and right ends of the support platform 1 are provided with slide rails 5042, the front right end of the support platform 1 is fixedly connected to a controller 6, and multiple shock-absorbing support columns 7 are provided between adjacent support platforms 1 and support frame 2. The conveying mechanism 8 includes a support frame 801, the right side of the support frame 801 is provided on the left side of the support platform 1, the inner bottom of the support frame 801 is fixedly connected to a slide rail 802, and multiple conveying rollers 803 are rotatably connected between adjacent slide rails 802 for conveying coal. Specifically, the limiting component 504 provides stable guidance and limiting for the collection box 501 through the cooperation of the slider 5041 and the slide rail 5042. The two sliders 5041 are fixed on the left and right sides of the bottom of the collection box 501 and are slidably connected to the slide rail 5042 on the bottom of the inner side of the support platform 1 to ensure that the collection box 501 moves in a straight line when pushed and pulled, avoiding deviation and jamming, while limiting up and down shaking and improving docking accuracy. The controller 6 at the front right end of the support platform 1 integrates the operating parameters of each component and adjusts the crushing gap and screening frequency in real time to achieve intelligent control. The multiple shock-absorbing support columns 7 between the support platform 1 and the support frame 2 are made of elastic material, which can absorb the vibration energy of the equipment and reduce component wear and noise. The conveying mechanism 8 connects the previous process with the crushing system. The support slide 802 in the support frame 801 and the multiple conveying rollers 803 rotatably connected on the inner side operate synchronously through the linkage device, which smoothly conveys the pre-treated coal to the crushing and adjusting mechanism 3. The surface of the conveying rollers 803 is treated with anti-slip to ensure that the coal does not slip. The spacing is appropriate for the coal particle size to avoid material leakage. Protective plates are set on both sides of the support slide 802 to prevent coal from falling, forming a continuous material transmission line, improving the continuity and stability of production, and providing efficient guarantee for the coking coal blending process.

[0023] Working principle: First, the coal to be processed enters the system through the conveying mechanism 8. The support frame 801 of the conveying mechanism 8 provides stable support for the slide 802. Multiple conveying rollers 803 on the inner side of the slide 802 rotate synchronously under the drive of the linkage device, smoothly conveying the coal to the screening mechanism 4 above. The anti-slip treatment on the surface of the conveying rollers 803 ensures that the coal does not slip, and the protective plates on both sides of the slide 802 effectively prevent the coal from falling during the conveying process, ensuring the continuity of material conveying. After the coal enters the screening mechanism 4, multiple electromagnetic telescopic rods 401 on the left and right sides inside the first support frame 2 begin to work, generating reciprocating thrust to drive the second support frame 402 to vibrate at high frequency. This, in turn, causes the coal blending screen 403 in the middle of the inner side of the second support frame 402 to vibrate synchronously. The coal is subjected to vibration on the coal blending screen 403, and qualified particles fall through the screen holes, while gangue, iron blocks, and other impurities are intercepted on the screen surface, achieving the separation of coal and impurities. During this process, the amplitude and frequency of the electromagnetic telescopic rods 401 can be flexibly adjusted by the controller 6 to adapt to the screening requirements of different coal types. At the same time, the splash-proof components 405 on the front and rear sides of the top of the second support frame 402 play a role in... The support rod 4052 on the mounting block 4051 supports the baffle 4053, blocking the coal material splashed out due to high-frequency vibration, thus avoiding waste and environmental pollution. The clean coal material after screening falls onto the guide inclined plate 404 at the bottom of the inner side of the support frame 402. With the help of the inclined plate's inclined design and wear-resistant surface treatment, it quickly slides down to the crushing and adjusting mechanism 3 below, preventing coal material from accumulating and clogging. In addition, in the metering component 406 on the top right side of the support frame 402, the shock-absorbing pad 4061 reduces the impact of vibration on the metering device 4062. The metering device 4062 monitors the amount of coal material after screening in real time, and the data is fed back to the controller 6 for accurate control of subsequent processes. After receiving coal from the screening mechanism 4, the crushing and adjusting mechanism 3 begins the crushing operation. Two mounting plates 301 at the front and rear ends of the right side of the top of the support platform 1 provide stable support for the entire mechanism. The reduction motor 302 on the top of the mounting plate 301 starts, driving the sliding screw 303 at the output end to rotate. The support block 304 on the outside of the sliding screw 303 moves smoothly axially under the action of the screw drive. Since the two grinding wheels 306 are respectively connected between the limiting block 305 and the support block 304 through bearings, and the left grinding wheel 306 is fixed... As the machine rotates, the right grinding wheel 306 moves with the bearing block 304, thereby realizing the dynamic adjustment of the gap between the two grinding wheels 306. The crushing parameters can be adjusted according to the coal quality characteristics without stopping the machine. At the same time, the rotating motor 308 on the front side of the front limit block 305 drives the two grinding wheels 306 to rotate in opposite directions at a constant speed through the coupling. The hammerhead protrusions 307 evenly distributed on the outer side of the grinding wheel 306 are made of high chromium alloy. During the rotation, they apply impact, compression and shearing action to the coal, greatly enhancing the crushing effect and ensuring that the coal is crushed evenly. The crushed coal falls into the collection mechanism 5 inside the support platform 1. The collection box 501 cooperates with the support platform 1 through the bottom limiting component 504. The slider 5041 slides along the slide rail 5042 to ensure that the collection box 501 is accurately connected to the discharge port of the crushing adjustment mechanism 3 to prevent the coal from scattering. The placement groove 502 inside the collection box 501 provides space for coal collection. When a certain amount is collected, the operator can pull the collection box 501 out from the inside of the support platform 1 through the handle 503 to complete the transfer of coal. Throughout the entire operation, the controller 6 on the right side of the front of the bearing platform 1 integrates the operating parameters of each component, adjusts the crushing gap and screening frequency in real time, and realizes intelligent control. The multiple shock-absorbing support columns 7 between the bearing platform 1 and the bearing frame 2 are made of elastic material, which effectively absorbs the vibration energy generated during the operation of the equipment, reduces the wear of each component and operating noise, and extends the service life of the equipment. The device realizes the high efficiency, precision and continuity of coal blending, provides a reliable guarantee for the coal blending process in coking production, and ensures the stable quality of coal required for subsequent coking stages.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal blending and crushing device for coking production, comprising a support platform (1), characterized in that: The top of the support platform (1) is provided with a crushing adjustment mechanism (3), which is used to crush the coal. The top of the crushing adjustment mechanism (3) is provided with a support frame (2), and the inner side of the support frame (2) is provided with a screening mechanism (4), which is used to screen the coal. The inner side of the support platform (1) is provided with a collection mechanism (5), and the left side of the support platform (1) is provided with a conveying mechanism (8). The crushing adjustment mechanism (3) includes two mounting plates (301). The bottom of the two mounting plates (301) is fixedly connected to the front and rear ends of the top right side of the support platform (1). The top of the two mounting plates (301) is fixedly connected to a reduction motor (302). The output end of the two reduction motors (302) is fixedly connected to a sliding screw (303). The left end of the two sliding screws (303) is fixedly connected to a limit block (305). The outer side of the two sliding screws (303) is slidably connected to a support block (304). The adjacent limit blocks (305) and the two support blocks (304) are respectively rotatably connected to grinding wheels (306). The outer side of the two grinding wheels (306) is fixedly connected to multiple hammerhead protrusions (307). The front side of the front limit block (305) is fixedly connected to a rotating motor (308).

2. The coal blending and pulverizing device for coking production according to claim 1, characterized in that: The screening mechanism (4) includes multiple electromagnetic telescopic rods (401). The opposite sides of the multiple electromagnetic telescopic rods (401) are fixedly connected to the left and right sides inside the first support frame (2). The output ends of the multiple electromagnetic telescopic rods (401) are fixedly connected to the same second support frame (402). A coal blending screen (403) is fixedly connected to the middle of the inner side of the second support frame (402). A guide inclined plate (404) is fixedly connected to the bottom of the inner side of the second support frame (402). Anti-splash components (405) are provided on the front and rear sides of the top of the second support frame (402). A metering component (406) is provided on the right side of the top of the second support frame (402).

3. The coal blending and pulverizing device for coking production according to claim 2, characterized in that: The splash-proof assembly (405) includes two mounting blocks (4051), the bottoms of which are fixedly connected to the front and rear ends of the top of the second support frame (402), and the tops of which are fixedly connected to two support rods (4052), and the tops of the multiple support rods (4052) are respectively fixedly connected to baffles (4053).

4. A coal blending and pulverizing device for coking production according to claim 2, characterized in that: The metering component (406) includes a shock-absorbing pad (4061), the bottom of which is fixedly connected to the top right side of the support frame (402), and the top of which is fixedly connected to a meter (4062).

5. A coal blending and pulverizing device for coking production according to claim 1, characterized in that: The collection mechanism (5) includes a collection box (501), the outer side of which is slidably connected to the inner side of the support platform (1), the inner side of which is provided with a placement groove (502), the front side of which is fixedly connected with a handle (503), and the bottom of which is provided with a limit component (504).

6. A coal blending and pulverizing device for coking production according to claim 5, characterized in that: The limiting component (504) includes a slider (5041), the tops of the two sliders (5041) are fixedly connected to the bottom left and right sides of the collection box (501), and the inner bottom left and right ends of the support platform (1) are provided with slide rails (5042).

7. A coal blending and pulverizing device for coking production according to claim 1, characterized in that: A controller (6) is fixedly connected to the front right end of the support platform (1), and multiple shock-absorbing columns (7) are provided between adjacent support platforms (1) and support frame (2).

8. A coal blending and pulverizing device for coking production according to claim 1, characterized in that: The conveying mechanism (8) includes a support frame (801), the right side of which is located on the left side of the support platform (1). A slide rail (802) is fixedly connected to the bottom inner side of the support frame (801), and multiple conveying rollers (803) are rotatably connected between adjacent slide rails (802).

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