A crushing device for sintering refining slag and its usage method

Abstract

This invention discloses a crushing device and its method for using sintering refining slag, relating to the technical field of crushing devices. It includes an explosion-proof housing and a drive motor. Conveyor pulleys are mounted on one side of both the explosion-proof housing and the drive motor, and conveyor belts are fitted onto the outer surfaces of both pulleys. A feed inlet is located at the upper end of the explosion-proof housing. A crushing mechanism for crushing the refining slag is located in the middle of the inner cavity of the explosion-proof housing. A crushing mechanism for crushing large particles of refining slag, in conjunction with the crushing mechanism, is located on one side of the explosion-proof housing. This invention achieves secondary, stepwise crushing of the refining slag through the cooperation of crushing teeth, grinding teeth, and protruding teeth. The multi-stage crushing method ensures that all materials reach the required particle size standard, and even relatively hard or large particles can be thoroughly crushed, reducing the possibility of residual large particles.

Description

Technical Field

[0001] This invention relates to the field of crushing equipment technology, and in particular to a crushing device and method of use for sintering refining slag. Background Technology

[0002] Sintered refining slag primarily originates from the refining and sintering processes in steel production. During steelmaking, to improve the reducibility of the ore, reduce energy consumption, and enhance metallurgical properties, raw materials such as iron ore powder, limestone, and dolomite are typically mixed and sintered to form sintered ore with a specific particle size for blast furnace smelting. Further refining of molten iron in blast furnaces or electric arc furnaces also produces various types of slag, which, after specific treatment, can become what is known as "sintered refining slag."

[0003] For example, publication number CN220215108U, entitled "A Crushing Device for Sintering Refining Slag," includes a crushing box and supporting legs. A screen plate is slidably connected to the center of the crushing box, and a drive shaft abuts against the top center of the screen plate. It employs crushing rollers, crushing columns, and a screen plate. In actual use, personnel can drag the screen plate as needed, ensuring the required holes on the screen plate are positioned inside the device, facilitating subsequent screening of the refining slag to the desired size. After the screen plate is adjusted, the protrusion length of the crushing column and the contact height of the crushing rollers can be controlled systematically according to the work progress, thus achieving both crushing and grinding of the refining slag. Simultaneously, the processing size can be adjusted step-by-step for better operation. It has the advantages of integrated crushing and grinding, adjustable crushing size, and good crushing effect.

[0004] In the process of processing sintering refining slag, materials of different sizes cannot be crushed simultaneously and efficiently. Due to the large differences in the size of the raw materials, the overall processing efficiency is reduced, and it is difficult to ensure that each size of material can be processed in the most suitable way according to its characteristics. Traditional processing methods usually use uniform pressure and crushing force, and fail to adjust the processing parameters according to the actual size and hardness of the material. This means that during the processing, large particles may not be crushed sufficiently, while small particles may be over-crushed, resulting in inconsistent product particle size and affecting the subsequent application effect. Therefore, this application provides a crushing device and method for sintering refining slag to meet the requirements. Summary of the Invention

[0005] The purpose of this application is to provide a crushing device and method for sintering refining slag, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a crushing device for sintering refining slag, comprising an explosion-proof shell and a drive motor, wherein a conveyor belt pulley is provided on one side of both the explosion-proof shell and the drive motor, and a conveyor belt is fitted on the outer surface of both conveyor belt pulleys; a feed inlet is provided at the upper end of the explosion-proof shell; a crushing mechanism for crushing refining slag is provided in the middle of the inner cavity of the explosion-proof shell; a crushing mechanism for crushing large particles of refining slag in conjunction with the crushing mechanism is provided on the other side of the explosion-proof shell; a discharge mechanism for filtering small particles of refining slag is provided at the bottom of the inner cavity of the explosion-proof shell; and a crushing mechanism for crushing the residual refining slag filtered in the discharge mechanism in conjunction with the crushing mechanism is provided on one side of the explosion-proof shell.

[0007] The crushing mechanism includes a gradually thickening arc plate and crushing teeth. The crushing teeth have multiple protruding teeth that are evenly distributed inside. The crushing ends of the crushing teeth and the protruding teeth are serrated. The gradually thickening arc plate is arc-shaped and its wall thickness gradually increases.

[0008] The feed inlet is equipped with a filter screen for screening refining slag. Both sides of the feed inlet are equipped with first hydraulic rods for controlling the crushing distance between the crushing mechanism and the grinding mechanism. Both sides of the explosion-proof shell are equipped with second hydraulic rods for controlling the grinding distance between the crushing mechanism and the grinding mechanism.

[0009] The material leakage mechanism includes a ribbed plate, and a discharge pipe is provided at the bottom of the explosion-proof shell. The ribbed plate is installed at the upper end of the discharge pipe. Several inclined material outlets for screening small particles of refining slag are opened on the outer surface of the ribbed plate at equal intervals. Multiple guide plates are provided on the inner wall of the ribbed plate at equal intervals.

[0010] The crushing mechanism includes a support shaft, which is rotatably installed inside the explosion-proof housing. One end of the support shaft is fixedly connected to a conveyor belt pulley. A cylindrical shaft is provided on the outer surface of the support shaft, and several strip grooves arranged in a ring array are opened on the outer surface of the cylindrical shaft.

[0011] The strip groove is provided with a connecting block inside. The inner wall of the connecting block is provided with several placement slots that are evenly distributed. Each of the placement slots is provided with an arc block inside. The outer surface of the arc block is arranged with a number of crushing teeth with progressively increasing size, and the crushing teeth are provided with grooves inside.

[0012] The crushing mechanism includes an arc-shaped semi-shell. A first support rod is provided on the upper part of the outer surface of the arc-shaped semi-shell. Both ends of the first support rod are rotatably connected to a first hydraulic rod. A first rotating shaft is provided on the lower part of the outer surface of the arc-shaped semi-shell and is rotatably connected to an explosion-proof shell. A gradually thickening push plate is provided on the inner wall of the arc-shaped semi-shell. Several fixing bolts for fixing the position of the gradually thickening push plate are provided inside the arc-shaped semi-shell. The gradually thickening push plate is semi-circular in shape and the wall thickness of the gradually thickening push plate gradually increases.

[0013] The inner wall of the gradually thickening pusher is provided with several equally spaced mounting grooves. Each of the mounting grooves is provided with a retaining strip. The bottom of the retaining strip is provided with a bolt for fixing the position of the retaining strip. The retaining strip is provided with a fixing groove. The fixing groove is provided with a crossbar.

[0014] The crushing mechanism further includes a pusher housing, the upper end of which is provided with a second support rod. Both ends of the second support rod are rotatably connected to a second hydraulic rod. The lower part of the outer surface of the pusher housing is provided with a second rotating shaft that is rotatably connected to the explosion-proof housing. The gradually thickening arc plate is attached to the inner wall of the pusher housing, and the inside of the pusher housing is provided with fastening bolts for fixing the position of the gradually thickening arc plate.

[0015] The present invention also provides a method for using a crushing device for sintering refining slag, the specific method of use being as follows:

[0016] Step 1: Pour the sintered refining slag into the feed inlet. The drive motor drives the conveyor belt pulley to rotate through the output shaft. The conveyor belt is used for transmission between the two conveyor belt pulleys. The conveyor belt pulley drives the crushing mechanism to rotate and crush the sintered refining slag. When the sintered refining slag enters the inside of the feed inlet, it first passes through the filter screen for filtration. The filter screen screens the sintered refining slag. The large particles of sintered refining slag that are screened out are sent to the crushing mechanism and the grinding mechanism for crushing. The small particles of sintered refining slag are sent to the grinding mechanism and the crushing mechanism for grinding.

[0017] Step 2: After being continuously crushed between the crushing and grinding mechanisms, the large-particle sintering refining slag falls onto the material discharge mechanism. Because the distance between the crushing and grinding mechanisms is gradually reduced after the adjustment of the first hydraulic rod, the sintering refining slag is gradually crushed between the crushing and grinding mechanisms.

[0018] Step 3: After the sintering refining slag is crushed by the crushing and pulverizing mechanisms and falls onto the material leakage mechanism, the small particles of sintering refining slag will enter the discharge pipe through the material leakage mechanism. The sintering refining slag remaining on the material leakage mechanism will be fed into the crushing mechanism along with the rotation of the pulverizing mechanism and crushed together with the pulverizing mechanism. This allows the sintering refining slag to be crushed a second time according to the degree of crushing. The distance between the crushing mechanism and the pulverizing mechanism gradually decreases to crush the sintering refining slag.

[0019] In summary, the technical effects and advantages of this invention are as follows:

[0020] 1. In this invention, the refined slag, after initial crushing by the crushing and grinding mechanisms, falls onto the ribbed plate. Material meeting the required size is discharged directly through the inclined discharge port, while larger particles remain on the ribbed plate for further processing. This effectively separates materials that meet the particle size requirements, reducing unnecessary secondary processing steps and improving overall efficiency. Furthermore, the serrated design of the crushing and protruding teeth allows for more thorough contact with the refined slag, providing stronger crushing force. The gradually increasing wall thickness of the arc-shaped plates allows for a gradual decrease in the distance between the crushing and grinding teeth, further enhancing the crushing effect. The second hydraulic rod can dynamically adjust the distance between the crushing and grinding teeth as needed, allowing the equipment to adjust in real time according to the actual material condition, ensuring optimal crushing results. By adjusting the distance, appropriate crushing force can be provided for materials of different hardness or size, avoiding over-crushing or under-crushing, improving the adaptability and working efficiency of the equipment. Through the cooperation of the crushing, grinding, and protruding teeth, secondary, step-by-step crushing of the refined slag is achieved. The multi-stage crushing method ensures that all materials can meet the required particle size standards, and even harder or larger particles can be thoroughly crushed, reducing the possibility of large particles remaining.

[0021] 2. In this invention, the filter screen performs preliminary screening of the refining slag entering the feed inlet, separating large and small particles. This improves the efficiency of subsequent processing steps and ensures that materials of each size receive the most suitable treatment for their characteristics. Large particles are directly fed between the thickening pusher and the crushing teeth for crushing, while small particles may directly enter the next process or undergo further refinement. The thickening pusher is sickle-shaped, causing the distance between the crossbar and the crushing teeth to gradually decrease, enabling progressive crushing of the material and ensuring that materials of different particle sizes, from large to small, are effectively processed. As the material moves within the equipment, it initially comes into contact with larger gaps, and then as the gaps gradually narrow, the pressure on the material increases, resulting in finer crushing. The first hydraulic rod can dynamically adjust the distance between the crossbar and the crushing teeth according to the crushing requirements of the refining slag, allowing the equipment to adjust in real time according to the actual state of the material, ensuring the best crushing effect. By adjusting the spacing, appropriate crushing force can be provided for materials of different hardness or size, avoiding over-crushing or under-crushing, thus improving the adaptability and working efficiency of the equipment. Moreover, the material comes into contact with the cross blades and crushing teeth multiple times during the falling process, and after multiple crushing, it is ensured that the material can be fully crushed to the required particle size. Each contact provides a new crushing opportunity, so that even relatively hard and large pieces of material can be thoroughly crushed, reducing the possibility of residual large particles and improving the quality of the final product. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A first-view three-dimensional structural diagram of a crushing device for sintering refining slag;

[0024] Figure 2 A second-view three-dimensional structural diagram of a crushing device for sintering refining slag;

[0025] Figure 3 A three-dimensional sectional view of the connection structure of a crushing device for sintering refining slag;

[0026] Figure 4 A schematic diagram of the internal three-dimensional connection structure of a crushing device for sintering refining slag;

[0027] Figure 5 Cross-sectional view of a crushing device for sintering refining slag;

[0028] Figure 6A partial three-dimensional connection diagram of a crushing device for sintering refining slag;

[0029] Figure 7 This is a schematic diagram of the three-dimensional connection structure between the crushing mechanism and the pulverizing mechanism;

[0030] Figure 8 A first-person perspective three-dimensional connection structure diagram of the crushing mechanism;

[0031] Figure 9 A schematic diagram of the two-dimensional connection structure of the crushing mechanism from a second perspective;

[0032] Figure 10 A schematic diagram of the three-dimensional connection structure of the gradually thickening pusher sheet;

[0033] Figure 11 This is a schematic diagram of the three-dimensional connection structure between the horizontal blade and the retaining strip;

[0034] Figure 12 This is a schematic diagram of the three-dimensional connection structure of the material leakage mechanism;

[0035] Figure 13 This is a schematic diagram of the three-dimensional connection structure of the crushing mechanism;

[0036] Figure 14 This is a schematic diagram of the three-dimensional connection structure of the cylinder shaft;

[0037] Figure 15 This is a schematic diagram of the three-dimensional connection structure of the arc block and the connecting block;

[0038] Figure 16 This is a schematic diagram of the three-dimensional connection structure of the pulverizing teeth;

[0039] Figure 17 A first-person perspective three-dimensional connection structure diagram of the crushing mechanism;

[0040] Figure 18 A second-view three-dimensional connection structure diagram of the crushing mechanism;

[0041] Figure 19 This is a schematic diagram of the three-dimensional connection structure of the gradually thickening arc sheet;

[0042] Figure 20 This is a schematic diagram of the three-dimensional connection structure of the crushing teeth and the protruding teeth.

[0043] In the diagram: 1. Drive motor; 2. Conveyor belt; 3. Conveyor pulley; 4. Feed inlet; 5. First hydraulic rod; 6. Second hydraulic rod; 7. Crushing mechanism; 71. First support rod; 72. Arc-shaped semi-shell; 73. Fixing bolt; 74. First rotating shaft; 75. Gradually thickening pusher; 76. Crossbar; 77. Mounting groove; 78. Clamping strip; 79. Fixing groove; 711. Bolt; 8. Explosion-proof shell; 9. Discharge pipe; 10. Crushing mechanism; 101. Second support rod; 102. 103. Push cover; 104. Second rotating shaft; 105. Gradually thickened arc plate; 106. Crushing teeth; 107. Fastening bolt; 108. Connecting shell; 109. Protruding teeth; 11. Crushing mechanism; 111. Support shaft; 112. Arc block; 113. Cylindrical shaft; 114. Strip groove; 115. Connecting block; 116. Placement groove; 117. Crushing teeth; 118. Groove; 12. Material leakage mechanism; 121. Ribbed plate; 122. Guide plate; 123. Inclined material inlet; 13. Filter grid. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1, Reference Figures 1 to 20 The device shown is a crushing device for sintering refining slag, including an explosion-proof housing 8 and a drive motor 1. Conveyor pulleys 3 are provided on one side of both the explosion-proof housing 8 and the drive motor 1. Conveyor belts 2 are fitted onto the outer surfaces of both conveyor pulleys 3. A feed inlet 4 is provided at the upper end of the explosion-proof housing 8. A crushing mechanism 11 for crushing refining slag is provided in the middle of the inner cavity of the explosion-proof housing 8. A crushing mechanism 7, which works with the crushing mechanism 11 to crush large particles of refining slag, is provided on one side of the explosion-proof housing 8. A material leakage mechanism 12 for filtering small particles of refining slag is provided at the bottom of the inner cavity of the explosion-proof housing 8. A crushing mechanism 10, which works with the crushing mechanism 11 to crush the residual refining slag filtered by the material leakage mechanism 12, is provided on the other side of the explosion-proof housing 8.

[0046] It is worth noting that when the sintered refining slag is poured into the feed inlet 4, the drive motor 1 drives the conveyor pulley 3 to rotate through the output shaft, while the conveyor belt 2 is used for transmission between the two conveyor pulleys 3. The conveyor pulley 3 drives the crushing mechanism 11 to rotate and crush the sintered refining slag. When the sintered refining slag enters the interior of the feed inlet 4, it first passes through the filter screen 13 for filtration. The filter screen 13 screens the sintered refining slag, and the large particles of sintered refining slag that are screened out are sent to the crushing mechanism 7 and the crushing mechanism 11 for crushing, while the small particles of sintered refining slag are sent to the grinding mechanism 10 and the crushing mechanism 11 for grinding.

[0047] Large sintering refining slag particles fall onto the material discharge mechanism 12 after being continuously crushed between the crushing mechanism 11 and the crushing mechanism 7. Because the distance between the crushing mechanism 7 and the crushing mechanism 11 is gradually reduced after the adjustment of the first hydraulic rod 5, the sintering refining slag is gradually crushed between the crushing mechanism 7 and the crushing mechanism 11.

[0048] The filter screen 13 performs preliminary screening of the sintering refining slag entering the feed inlet 4, separating large and small particles to ensure more efficient subsequent processing steps. This avoids the need for all materials to undergo the same intensity of crushing. Large particles are directly fed into the crushing mechanism 7, while small particles are sent to the grinding mechanism 10, making the processing more targeted.

[0049] By coordinating the crushing mechanism 7 and the grinding mechanism 11, and adjusting the distance between them using the first hydraulic rod 5, progressive grinding of large particles is achieved, effectively improving grinding efficiency and ensuring that the material reaches the required particle size. As the distance gradually decreases, the pressure on the material increases, resulting in a finer grinding effect. Furthermore, for large particles that fail to reach the ideal particle size in the initial grinding, they can be re-grinded in the crushing mechanism 10 to ensure the consistency of the final product.

[0050] The distance between the crushing mechanism 7 and the pulverizing mechanism 11 is dynamically adjusted by using the first hydraulic rod 5, which allows the equipment to flexibly adjust the processing force according to the actual needs of the material. As the pulverizing process proceeds, the distance gradually decreases, increasing the pressure on the material and helping to achieve finer pulverization.

[0051] After the sintering refining slag is crushed by the crushing mechanism 7 and the pulverizing mechanism 11 and falls onto the discharge mechanism 12, the small particles of sintering refining slag will enter the discharge pipe 9 through the discharge mechanism 12. The sintering refining slag remaining on the discharge mechanism 12 will be fed into the crushing mechanism 10 as the pulverizing mechanism 11 rotates, and will be crushed in conjunction with the pulverizing mechanism 11. This allows the sintering refining slag to be crushed a second time according to the degree of crushing. The distance between the crushing mechanism 10 and the pulverizing mechanism 11 gradually decreases to crush the sintering refining slag.

[0052] After being initially crushed by the crushing mechanism 7 and the pulverizing mechanism 11, the material is sent to the discharge mechanism 12. Small particles of sintering refining slag that have met the particle size requirements can directly enter the discharge pipe 9 through the discharge mechanism 12, reducing unnecessary further processing and effectively reducing energy consumption, because only those large particles that require further processing will enter the next round of crushing process.

[0053] Larger sintering refining slag particles remaining on the material discharge mechanism 12 will be sent to the crushing mechanism 10 for secondary crushing. The grading process ensures that all materials can reach the required degree of crushing. Through secondary crushing, even relatively hard or large particles can be fully crushed, ensuring the consistency of the final product and making it suitable for various subsequent application needs.

[0054] The design of gradually decreasing spacing between the crushing mechanism 10 and the pulverizing mechanism 11 allows for gradually increasing pressure to be applied to the material, thereby achieving finer pulverization. The pulverizing force can be dynamically adjusted according to the actual degree of pulverization of the material. As the spacing gradually decreases, the pressure on the material increases, and the pulverization becomes more thorough.

[0055] Example 2: Based on the crushing mechanism 11 and the crushing mechanism 7 provided in Example 1, this example provides a further technical solution for the crushing mechanism 11 and the crushing mechanism 7.

[0056] The feed inlet 4 is equipped with a filter screen 13 for screening refining slag. Both sides of the feed inlet 4 are equipped with first hydraulic rods 5 for controlling the crushing distance between the crushing mechanism 7 and the pulverizing mechanism 11. Both sides of the explosion-proof housing 8 are equipped with second hydraulic rods 6 for controlling the crushing distance between the grinding mechanism 10 and the pulverizing mechanism 11.

[0057] It is worth noting that when the refining slag is fed into the feed inlet 4, it falls into the explosion-proof housing 8 after being screened by the filter screen 13. The filter screen 13 screens the refining slag, and the large particles of refining slag are fed between the crushing mechanism 7 and the grinding mechanism 11, while the small particles of refining slag fall between the grinding mechanism 10 and the crushing mechanism 11 after being screened by the filter screen 13. The filter screen 13 is placed at an angle, and the surface area of ​​the crushing mechanism 7 is larger than that of the grinding mechanism 10, and the filter screen 13 is located above the grinding mechanism 10.

[0058] The crushing mechanism 11 includes a support shaft 111, which is rotatably installed inside the explosion-proof housing 8. One end of the support shaft 111 is fixedly connected to the conveyor belt pulley 3. A cylindrical shaft 113 is provided on the outer surface of the support shaft 111, and a number of strip grooves 114 arranged in a ring array are opened on the outer surface of the cylindrical shaft 113.

[0059] The strip groove 114 is provided with a connecting block 115 inside. The inner wall of the connecting block 115 is provided with several placement grooves 116 that are evenly distributed. Each of the placement grooves 116 is provided with an arc block 112 inside. The outer surface of the arc block 112 is arranged with a number of crushing teeth 117 whose size increases sequentially. The crushing teeth 117 are provided with grooves 118 inside.

[0060] When the conveyor belt pulley 3 rotates, it drives the support shaft 111 to rotate. The support shaft 111 drives the drum shaft 113 to rotate, which in turn drives the connecting block 115 to rotate. The connecting block 115 then drives the arc block 112 to rotate. Because the arc block 112 has a large arc-shaped distribution area, when multiple arc blocks 112 are combined together, they occupy four-fifths of the surface area of ​​the drum shaft 113. When the arc block 112 rotates, it drives the crushing teeth 117 to rotate. Furthermore, because the crushing teeth 117 are arranged on the surface of the arc block 112 in a sequentially increasing size arrangement, the crushing teeth 117 can cooperate with the crushing mechanism 7 to gradually change the spacing to crush the refining slag.

[0061] The inclined placement of the filter screen 13 facilitates smoother material flow and effectively separates large and small refining slag particles, improving screening efficiency and reducing the likelihood of clogging. The crushing mechanism 7 has a larger surface area than the grinding mechanism 10. This larger surface area allows the crushing mechanism to handle more large particles, while the smaller grinding mechanism focuses on refining, ensuring the final product meets the required particle size standards.

[0062] The arc-shaped blocks 112 occupy four-fifths of the surface area of ​​the cylindrical shaft 113, and the crushing teeth 117 are arranged in progressively larger sizes, making the crushing process more efficient and uniform. Different crushing forces can be provided according to different stages of the material, achieving a gradual crushing effect. As the arc-shaped blocks 112 drive the crushing teeth to rotate, the refining slag first contacts the smaller crushing teeth for initial crushing, and then gradually contacts the larger crushing teeth for further fine crushing, ensuring thorough and consistent crushing. The distance between the crushing mechanism and the grinding mechanism can be dynamically adjusted via the first hydraulic rod 5 in the crushing mechanism 7, achieving precise control over the degree of material crushing.

[0063] The crushing mechanism 7 includes an arc-shaped semi-shell 72. A first support rod 71 is provided on the upper part of the outer surface of the arc-shaped semi-shell 72. Both ends of the first support rod 71 are rotatably connected to the first hydraulic rod 5. A first rotating shaft 74 is provided on the lower part of the outer surface of the arc-shaped semi-shell 72 and is rotatably connected to the explosion-proof shell 8. A gradually thickening push plate 75 is provided on the inner wall of the arc-shaped semi-shell 72. Several fixing bolts 73 for fixing the position of the gradually thickening push plate 75 are provided inside the arc-shaped semi-shell 72. The gradually thickening push plate 75 is semi-circular arc-shaped and the wall thickness of the gradually thickening push plate 75 gradually increases.

[0064] The inner wall of the gradually thickening push plate 75 is provided with several mounting grooves 77 distributed at equal intervals. Each mounting groove 77 is provided with a retaining strip 78. The bottom of the retaining strip 78 is provided with a bolt 711 for fixing the position of the retaining strip 78. The retaining strip 78 is provided with a fixing groove 79. The fixing groove 79 is provided with a crossbar 76.

[0065] It is worth noting that after being screened by the filter grid 13, the refining slag falls between the gradually thickening pusher 75 and the crushing teeth 117. The refining slag comes into contact with the horizontal blade 76 and is crushed by the rotation of the crushing teeth 117. As the crushing teeth 117 rotates and crushes the refining slag, the crushed refining slag continues to fall downwards. During the falling process, the refining slag comes into contact with the horizontal blade 76 again and is crushed again. Because the gradually thickening pusher 75 is sickle-shaped, the distance between the horizontal blade 76 and the crushing teeth 117 gradually decreases, so that the refining slag is gradually crushed from large to small. Furthermore, the first hydraulic rod 5 can adjust the distance between the horizontal blade 76 and the crushing teeth 117 according to the crushing requirements of the refining slag.

[0066] The filter screen 13 performs preliminary screening of the refining slag entering the feed inlet, separating large and small particles. This can improve the efficiency of subsequent processing steps and ensure that each size of material can be processed in the most suitable way for its characteristics. Large particles are directly sent to the area between the gradually thickening pusher 75 and the crushing tooth 117 for crushing, while small particles may directly enter the next process or be further refined.

[0067] The gradually thickening pusher 75 is sickle-shaped, causing the gap between the cross blades 76 and the crushing teeth 117 to gradually decrease. This enables progressive crushing of materials, ensuring that materials of different particle sizes, from large to small, are effectively processed. As the materials move within the equipment, they initially come into contact with the larger gaps. Subsequently, as the gaps gradually narrow, the pressure on the materials increases, resulting in finer crushing. The first hydraulic rod 5 can dynamically adjust the gap between the cross blades 76 and the crushing teeth 117 according to the crushing requirements of the refining slag, allowing the equipment to adjust in real time according to the actual state of the materials, ensuring optimal crushing results. By adjusting the gap, appropriate crushing force can be provided for materials of different hardness or size, avoiding over-crushing or under-crushing, thus improving the adaptability and working efficiency of the equipment.

[0068] Moreover, the material comes into contact with the horizontal blade 76 and the crushing teeth 117 multiple times during the falling process. Through multiple crushing processes, it is ensured that the material can be fully crushed to the required particle size. Each contact provides a new crushing opportunity, which makes even relatively hard and large pieces of material completely crushed, reducing the possibility of residual large particles and improving the quality of the final product.

[0069] Example 3: Based on the material leakage mechanism 12 and crushing mechanism 10 provided in Example 1, this example provides a further technical solution for the material leakage mechanism 12 and crushing mechanism 10.

[0070] The material leakage mechanism 12 includes a rib plate 121. The bottom of the explosion-proof shell 8 is provided with a discharge pipe 9. The rib plate 121 is installed at the upper end of the discharge pipe 9. The outer surface of the rib plate 121 is provided with a number of inclined material ports 123 that are evenly distributed for screening small particles of refining slag. The inner wall of the rib plate 121 is provided with a number of equally distributed guide plates 122.

[0071] It is worth noting that after the refining slag is crushed by the crushing mechanism 7 and the grinding mechanism 11, it will fall onto the rib plate 121. The refining slag that meets the crushing size requirements will be discharged through the inclined material outlet 123, while the refining slag remaining on the rib plate 121 will be separated by the guide plate 122. When the grinding teeth 117 rotate, the guide plate 122 will penetrate into the groove 118, and the grinding teeth 117 will push the refining slag on the rib plate 121 into the grinding mechanism 10. Because the grinding teeth 117 are designed to be... Figure 16 The shape shown allows the refining slag in the ribbed plate 121 to be pushed into the crushing mechanism 10 as the crushing teeth 117 rotate.

[0072] The crushing mechanism 10 also includes a push cover 102. The upper end of the push cover 102 is provided with a second support rod 101. Both ends of the second support rod 101 are rotatably connected to the second hydraulic rod 6. The lower part of the outer surface of the push cover 102 is provided with a second rotating shaft 103 rotatably connected to the explosion-proof shell 8. The gradually thickening arc plate 104 is attached to the inner wall of the push cover 102, and the inside of the push cover 102 is provided with a fastening bolt 106 for fixing the position of the gradually thickening arc plate 104.

[0073] The crushing mechanism 10 includes a gradually thickened arc plate 104 and crushing teeth 105. The crushing teeth 105 have multiple protruding teeth 109 arranged at equal intervals inside. The crushing ends of the crushing teeth 105 and the protruding teeth 109 are both sawtooth-shaped. The gradually thickened arc plate 104 is arc-shaped, and the wall thickness of the gradually thickened arc plate 104 gradually increases.

[0074] As the crushing tooth 117 rotates, it pushes the refining slag into contact with the grinding tooth 105 first, while the protruding tooth 109 is inserted into the groove 118, which can crush the refining slag pushed by the crushing tooth 117. Since the crushing ends of the grinding tooth 105 and the protruding tooth 109 are both serrated, they can fully contact the refining slag for crushing.

[0075] The inner wall of the gradually thickened arc plate 104 is provided with several fastening bolts 106 distributed at equal intervals. Each of the fastening bolts 106 is provided with a connecting shell 107, and the crushing teeth 105 are installed inside the connecting shell 107.

[0076] The gradually thickening arc plate 104 is designed with a gradually increasing wall thickness, which causes the gap between the crushing tooth 117 and the grinding tooth 105 to gradually decrease when the crushing tooth 117 rotates, thus gradually crushing the refining slag. The second hydraulic rod 6 can adjust the gap between the crushing tooth 117 and the grinding tooth 105 as needed. The grinding tooth 105 and the protruding tooth 109 cooperate with the crushing tooth 117 to perform secondary and stepwise crushing of the refining slag.

[0077] The refining slag, after being initially crushed by the crushing mechanism 7 and the pulverizing mechanism 11, falls onto the rib plate 121. Material that meets the size requirements is discharged directly through the inclined discharge port 123, while large particles that do not meet the requirements are left on the rib plate for further processing. This effectively separates materials that meet the particle size requirements, reduces unnecessary secondary processing steps, and improves overall efficiency.

[0078] When the crushing tooth 117 rotates, the guide plate 122 extends into the groove 118, pushing the large particles of refining slag remaining on the rib plate 121 to the crushing mechanism 10. This ensures that all materials requiring further processing can be accurately fed into the next process. Furthermore, through the cooperation of the mechanical structure, the materials can be efficiently guided to the correct processing path, reducing the possibility of material accumulation or leakage.

[0079] The serrated shape design of the crushing teeth 105 and the protruding teeth 109 allows them to make more full contact with the refining slag, providing stronger crushing force. In addition, the gradually increasing wall thickness of the gradually thickened arc plate 104 allows the gap between the crushing teeth 117 and the crushing teeth 105 to gradually decrease, further enhancing the crushing effect.

[0080] Furthermore, the second hydraulic rod 6 can dynamically adjust the distance between the crushing teeth 117 and the grinding teeth 105 as needed, allowing the equipment to be adjusted in real time according to the actual material condition to ensure the best crushing effect. By adjusting the distance, appropriate crushing force can be provided for materials of different hardness or size, avoiding over-crushing or under-crushing, thus improving the adaptability and working efficiency of the equipment.

[0081] The secondary, stepwise crushing of refining slag is achieved through the coordinated action of crushing teeth 117, grinding teeth 105, and protruding teeth 109. This multi-stage crushing method ensures that all materials meet the required particle size standards, and even relatively hard or large particles can be thoroughly crushed, reducing the possibility of large particles remaining.

[0082] The present invention also provides a method for using a crushing device for sintering refining slag, the specific method of use being as follows:

[0083] Step 1: Pour the sintered refining slag into the feed inlet 4. Drive motor 1 drives the conveyor pulley 3 to rotate through the output shaft. The conveyor belt 2 is used for transmission between the two conveyor pulleys 3. The conveyor pulley 3 drives the crushing mechanism 11 to rotate and crush the sintered refining slag. When the sintered refining slag enters the inside of the feed inlet 4, it first passes through the filter screen 13 for filtration. The filter screen 13 screens the sintered refining slag. The large particles of sintered refining slag that are screened out are sent to the crushing mechanism 7 and the crushing mechanism 11 for crushing. The small particles of sintered refining slag are sent to the grinding mechanism 10 and the crushing mechanism 11 for grinding.

[0084] Step 2: After being continuously crushed between the crushing mechanism 11 and the crushing mechanism 7, the large sintering refining slag falls onto the material discharge mechanism 12. Because the distance between the crushing mechanism 7 and the crushing mechanism 11 is gradually reduced after the adjustment of the first hydraulic rod 5, the sintering refining slag is gradually crushed between the crushing mechanism 7 and the crushing mechanism 11.

[0085] Step 3: After the sintering refining slag is crushed by the crushing mechanism 7 and the pulverizing mechanism 11 and falls onto the discharge mechanism 12, the small particles of sintering refining slag will enter the discharge pipe 9 through the discharge mechanism 12. The sintering refining slag remaining on the discharge mechanism 12 will be fed into the crushing mechanism 10 as the pulverizing mechanism 11 rotates, and will be crushed together with the pulverizing mechanism 11. This allows the sintering refining slag to be crushed a second time according to the degree of crushing. The distance between the crushing mechanism 10 and the pulverizing mechanism 11 gradually decreases to crush the sintering refining slag.

[0086] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A crushing device for sintering refining slag, comprising an explosion-proof housing (8) and a drive motor (1), wherein a conveyor pulley (3) is provided on one side of both the explosion-proof housing (8) and the drive motor (1), and a conveyor belt (2) is fitted on the outer surface of both conveyor pulleys (3), characterized in that: The explosion-proof housing (8) is provided with a feed inlet (4) at the upper end. The explosion-proof housing (8) is provided with a crushing mechanism (11) for crushing refining slag in the middle of its inner cavity. The explosion-proof housing (8) is provided with a crushing mechanism (7) for crushing large particles of refining slag in conjunction with the crushing mechanism (11) on one side. The explosion-proof housing (8) is provided with a material leakage mechanism (12) for filtering small particles of refining slag at the bottom of its inner cavity. The explosion-proof housing (8) is provided with a crushing mechanism (10) for crushing the residual refining slag filtered in the material leakage mechanism (12) in conjunction with the crushing mechanism (11) on the other side. The crushing mechanism (10) includes a gradually thickened arc plate (104) and crushing teeth (105). The crushing teeth (105) are provided with a plurality of protruding teeth (109) that are evenly distributed inside. The crushing ends of the crushing teeth (105) and the protruding teeth (109) are both sawtooth-shaped. The gradually thickened arc plate (104) is arc-shaped and the wall thickness of the gradually thickened arc plate (104) gradually increases. The feed inlet (4) is equipped with a filter screen (13) for screening refining slag. Both sides of the feed inlet (4) are equipped with a first hydraulic rod (5) for controlling the crushing distance between the crushing mechanism (7) and the pulverizing mechanism (11). Both sides of the explosion-proof shell (8) are equipped with a second hydraulic rod (6) for controlling the crushing distance between the grinding mechanism (10) and the pulverizing mechanism (11). The crushing mechanism (11) includes a support shaft (111), which is rotatably installed inside the explosion-proof housing (8), and one end of the support shaft (111) is fixedly connected to the conveyor belt pulley (3). A cylindrical shaft (113) is provided on the outer surface of the support shaft (111), and a plurality of strip grooves (114) arranged in a ring array are opened on the outer surface of the cylindrical shaft (113). The crushing mechanism (7) includes an arc-shaped semi-shell (72). A first support rod (71) is provided on the upper part of the outer surface of the arc-shaped semi-shell (72). Both ends of the first support rod (71) are rotatably connected to the first hydraulic rod (5). A first rotating shaft (74) is provided on the lower part of the outer surface of the arc-shaped semi-shell (72) and is rotatably connected to the explosion-proof shell (8). A gradually thickening push plate (75) is provided on the inner wall of the arc-shaped semi-shell (72). Several fixing bolts (73) for fixing the position of the gradually thickening push plate (75) are provided inside the arc-shaped semi-shell (72). The gradually thickening push plate (75) is semi-circular arc-shaped and the wall thickness of the gradually thickening push plate (75) gradually increases.

2. The crushing device for sintering refining slag according to claim 1, characterized in that: The material leakage mechanism (12) includes a strip plate (121), and a discharge pipe (9) is provided at the bottom of the explosion-proof shell (8). The strip plate (121) is installed at the upper end of the discharge pipe (9). The outer surface of the strip plate (121) is provided with a number of inclined material ports (123) that are evenly distributed for screening small particles of refining slag. The inner wall of the strip plate (121) is provided with a number of guide plates (122) that are evenly distributed.

3. The crushing device for sintering refining slag according to claim 1, characterized in that: The strip groove (114) is provided with a connecting block (115) inside. The inner wall of the connecting block (115) is provided with a number of placement grooves (116) distributed at equal intervals. The interior of each of the placement grooves (116) is provided with an arc block (112). The outer surface of the arc block (112) is arranged with a number of crushing teeth (117) of progressively increasing size. The interior of the crushing teeth (117) is provided with a groove (118).

4. The crushing device for sintering refining slag according to claim 1, characterized in that: The inner wall of the gradually thickening push plate (75) is provided with a number of equally spaced mounting grooves (77), and each of the mounting grooves (77) is provided with a retaining strip (78). The bottom of the retaining strip (78) is provided with a bolt (711) for fixing the position of the retaining strip (78). The retaining strip (78) is provided with a fixing groove (79), and the fixing groove (79) is provided with a crossbar (76).

5. A crushing device for sintering refining slag according to claim 1, characterized in that: The crushing mechanism (10) also includes a push cover (102), the upper end of which is provided with a second support rod (101), both ends of which are rotatably connected to a second hydraulic rod (6), and the lower part of the outer surface of the push cover (102) is provided with a second rotating shaft (103) rotatably connected to the explosion-proof shell (8), the gradually thickening arc plate (104) is attached to the inner wall of the push cover (102), and the inside of the push cover (102) is provided with a fastening bolt (106) for fixing the position of the gradually thickening arc plate (104).

6. A method of using the crushing device for sintering refining slag according to claim 1, characterized in that, The specific usage method is as follows: Step 1: Pour the sintered refining slag into the feed inlet (4). Drive motor (1) drives the conveyor pulley (3) to rotate through the output shaft. The conveyor belt (2) is used for transmission between the two conveyor pulleys (3). The conveyor pulley (3) drives the crushing mechanism (11) to rotate and crush the sintered refining slag. When the sintered refining slag enters the inside of the feed inlet (4), it first passes through the filter screen (13) for filtration. The filter screen (13) screens the sintered refining slag. The large particles of sintered refining slag that are screened out are sent to the crushing mechanism (7) and the crushing mechanism (11) for crushing. The small particles of sintered refining slag are sent to the grinding mechanism (10) and the crushing mechanism (11) for grinding. Step 2: After being continuously crushed between the crushing mechanism (11) and the crushing mechanism (7), the large sintering refining slag falls onto the material leakage mechanism (12). Because the distance between the crushing mechanism (7) and the crushing mechanism (11) gradually decreases after the adjustment of the first hydraulic rod (5), the sintering refining slag is gradually crushed between the crushing mechanism (7) and the crushing mechanism (11). Step 3: After the sintering refining slag is crushed by the crushing mechanism (7) and the pulverizing mechanism (11) and falls onto the material leakage mechanism (12), the small particles of sintering refining slag will enter the discharge pipe (9) through the material leakage mechanism (12), while the sintering refining slag remaining on the material leakage mechanism (12) will be fed into the crushing mechanism (10) along with the rotation of the pulverizing mechanism (11) and crushed together with the pulverizing mechanism (11), so that the sintering refining slag can be crushed a second time according to the degree of crushing. The distance between the crushing mechanism (10) and the pulverizing mechanism (11) is gradually reduced to crush the sintering refining slag.

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