A continuous scrap crushing and sorting apparatus

Abstract

The present application relates to smelting steel slag recycling technical field, specifically to a continuous scrap steel crushing and sorting equipment, including frame and cylinder, the cylinder is rotatably connected with the frame through the installation cover, one side of the frame is fixedly installed with driving motor, the even material cylinder is arranged between the rod mill cylinder and the feeding hopper, the spiral rod in the even material cylinder uniformly mixes and axially distributes the steel slag in the hopper, after the slag in the even material cylinder is uniformly accumulated, the slag enters the cylinder through the release port, so that the steel rods in each section of the cylinder jointly undertake the crushing task, on the one hand, effectively avoid the excessive wear of the two ends of the steel rod, not only prevent the slag from accumulating at both ends of the cylinder, but also improve the service life of the steel rod, on the other hand, the axial uniform distribution of the material makes the wear rate of the steel rod along the axial direction consistent, effectively avoids the mass center deviation of the steel rod, ensures the dynamic balance in the cylinder, thereby reduces the overall vibration of the rod mill, and further improves the service life of the bearing and other key components.

Description

Technical Field

[0001] This invention relates to the field of smelting steel slag recycling technology, specifically a continuous scrap steel crushing and sorting equipment. Background Technology

[0002] Steel slag is an inevitable byproduct of the iron and steel smelting process. Approximately 120-150 kg of steel slag is produced for every ton of crude steel produced. The composition of steel slag is complex, containing not only mineral phases such as calcium silicate and calcium ferrite, but also 10%-25% metallic iron. This iron mainly exists in three forms: large free iron (particle size > 20 mm), granular iron (particle size 1-20 mm), and fine iron powder. Large pieces of free iron exist in the steel slag as independent iron blocks, which are loosely connected to the slag. They are usually concentrated in the cast steel residue at the bottom of the slag pot or the steel blocks formed during the overturning of the slag ladle. When recycled, they can be directly returned to the converter or electric furnace as high-quality scrap steel raw materials to replace part of the pig iron and reduce smelting costs. Particle iron is encased or partially embedded in the slag phase in the form of metallic iron beads or fragments. It needs to be further crushed to be fully exposed and stripped. Therefore, the recovery of particle iron is mostly used as an iron-containing raw material for batching to improve the grade of sinter. Fine iron ore is mostly embedded in fine particles or tightly bound to mineral phases. Conventional magnetic separation has a low recovery rate and it is easy to remain in the tailings. Therefore, after stabilization treatment (such as hot quenching), it can be used to produce steel slag powder (cement admixture), roadbed materials or brick making. Therefore, crushing is necessary to break the bond structure between slag and iron, break the mineral phase of large steel slag pieces, and separate and sort the metallic iron in different forms. The specific steps are as follows: First, a jaw crusher is used to coarsely crush the large steel slag pieces to separate the large free iron. The resulting small steel slag pieces (containing granular iron and fine iron powder) are then transported to a rod mill for rod milling. The material after rod milling is then magnetically separated by a magnetic separator to obtain the final fine powder tailings. After stabilization treatment, it can be used to produce steel slag powder (cement admixture), roadbed materials, or brick making, thereby realizing the recycling of fine iron powder. However, existing rod mills typically use two feeding and discharging methods when crushing and recycling steel slag: one is feeding from one end and discharging from the other end (single inlet and single outlet); the other is feeding from both ends and discharging from the middle (inlet from both ends and outlet from the middle). Both of these methods will cause severe wear on the grinding rods inside the rod mill near the feeding end. On the one hand, wear of the grinding rods at the feed end weakens their coarse crushing ability, causing steel slag to accumulate at the inlet and thus reducing the grinding rate of the rod mill. On the other hand, uneven wear of the grinding rods at the feed end results in lighter grinding rods at the feed end, while the discharge end remains relatively heavy, leading to increased radial vibration at the feed end. This is especially true for single-inlet and single-outlet feeding methods, which can easily cause conical wear of the grinding rods, resulting in a shift in the center of mass of the grinding rods and generating additional oscillating torque. This disrupts the dynamic balance of the abrasive media inside the cylinder, intensifies the overall vibration of the rod mill, and accelerates the fatigue wear of key components such as bearings, shortening their service life. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a continuous scrap steel crushing and sorting equipment. It solves the problem of uneven wear of the abrasive rods at the feeding end, which causes the abrasive rods at the feeding end to become lighter while those at the discharge end remain heavier. This leads to increased radial vibration at the feeding end, especially in single-infeed and single-outfeed systems, where the abrasive rods are prone to conical wear, causing a shift in their center of gravity and generating additional oscillating torque. This disrupts the dynamic balance of the abrasive media within the cylinder, intensifies the overall vibration of the rod mill, and accelerates fatigue wear of key components such as bearings, shortening their service life.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a continuous scrap steel crushing and sorting equipment, comprising a frame and a cylinder, wherein the cylinder is rotatably connected to the frame via a mounting cover, a drive motor is fixedly installed on one side of the frame, the drive motor is used to drive the cylinder to rotate, a discharge port is provided in the middle of the cylinder, an annular plate is sleeved on the surface of the cylinder, the annular plate is fixedly connected to the frame, the annular plate is rotatably and sealingly connected to the cylinder, and an installation port communicating with the discharge port is provided on the surface of the annular plate; Connecting rings are fixedly installed at both ends of the cylinder, and the connecting rings are rotatably connected to the mounting cover. The end of the mounting cover away from the connecting ring is fixedly connected to the frame. Hoppers are fixedly installed on both sides of the frame, and steel bars are installed inside the cylinder. The cylinder body is equipped with a material equalization cylinder, which is fixedly connected to the mounting cover. The mounting cover has a through groove on the side near the material equalization cylinder that communicates with the material equalization cylinder. The side wall of the frame has a feed inlet, one end of which is connected to a hopper and the other end is connected to the through groove. A screw rod is installed inside the material equalization cylinder, and both ends of the screw rod are rotatably connected to two hoppers respectively. A servo motor is fixedly installed on the outer wall of the hopper, and the servo motor is used to drive the screw rod to rotate. The lower end of the material distribution cylinder is provided with a release port, and an opening and closing component is installed in the release port. The opening and closing component is used to control the opening and closing of the release port.

[0005] By adopting the above technical solution, this invention sets up a material distribution cylinder between the rod mill cylinder and the feed hopper. The spiral rod inside the distribution cylinder uniformly mixes and axially distributes the steel slag in the hopper within the distribution cylinder. After the slag in the distribution cylinder is evenly accumulated, the slag enters the cylinder through the release port, allowing the steel rods in each section of the cylinder to jointly undertake the crushing task. On the one hand, this effectively avoids excessive wear at both ends of the steel rods, preventing slag accumulation at both ends of the cylinder and increasing the service life of the steel rods. On the other hand, the axially uniform material distribution makes the wear rate of the steel rods tend to be consistent along the axial direction, effectively preventing the steel rod's center of gravity from shifting, ensuring the dynamic balance within the cylinder, thereby reducing the overall vibration of the rod mill and further improving the service life of key components such as bearings.

[0006] Preferably, the opening and closing assembly includes a sealing plate, which is rotatably connected to the inner wall of the release port via a hinge rod. The sealing plate is connected to the output end of a servo motor via a connecting module, and a pressure sensor is installed on the upper end of the sealing plate.

[0007] Preferably, the connecting module includes a steel wire rope, a traction rod is rotatably mounted on the side wall of the frame, one end of the steel wire rope is fixedly connected to the enclosed plate, and the other end is fixedly connected to the traction rod. The traction rod is connected to the output end of the servo motor through a transmission unit, and a locking unit is installed on the inner wall of the release port.

[0008] Preferably, the locking unit includes an insert plate, the inner wall of the release port is provided with a groove, the insert plate is slidably and sealingly connected in the groove, the insert plate is connected to the bottom of the groove by a connecting spring, and an electromagnetic plate is embedded in the bottom of the groove.

[0009] Preferably, the connection module includes a transmission gear ring, the frame has a cavity, the transmission gear ring is rotatably connected in the cavity, the transmission gear ring is fixedly installed at one end of the hinge rod, and the transmission gear ring is connected to the servo motor through a self-locking unit.

[0010] Preferably, the self-locking unit includes a worm gear and a worm, the worm is rotatably connected to the frame, the worm is connected to the output end of the servo motor through a transmission unit, the worm meshes with the worm gear, the worm gear is rotatably connected to the frame, the worm gear meshes with a rack, and the transmission gear ring meshes with the rack.

[0011] Preferably, the transmission unit includes a toothed belt, the surface of the output end of the servo motor is provided with a toothed groove, teeth are slidably connected in the toothed groove, a magnet is embedded on the side of the teeth near the toothed groove, an electromagnetic ring is embedded at the bottom of the toothed groove, the toothed belt is made of PTFE material, and the servo motor meshes with the toothed belt through the teeth.

[0012] Preferably, an annular mounting plate is provided inside the cylinder, the mounting plate is fixedly connected to the mounting cover, the material equalization cylinder is detachably connected to the mounting plate by bolts, and a blocking unit is installed on the side of the mounting plate near the cylinder, the blocking unit is used to prevent the steel rod from colliding with the material equalization cylinder.

[0013] Preferably, one end of the mounting cover has a cylindrical groove communicating with the cylinder, and a cover plate is threadedly connected to the side of the mounting cover away from the cylinder. The cover plate is detachably connected to the frame by bolts.

[0014] Preferably, the barrier unit includes a steel plate, which is fixedly connected to the mounting plate. The upper surface of the steel plate is inclined and the steel plate is configured as an inverted V-shape.

[0015] This invention provides a continuous scrap steel crushing and sorting device. It has the following beneficial effects: 1. This invention involves setting up a material distribution cylinder between the rod mill cylinder and the feed hopper. The spiral rod inside the distribution cylinder uniformly mixes and axially distributes the steel slag in the hopper. After the slag in the distribution cylinder is evenly accumulated, it enters the cylinder through the release port. This allows the steel rods in each section of the cylinder to jointly undertake the crushing task. On the one hand, this effectively avoids excessive wear at both ends of the steel rods, preventing slag accumulation at both ends of the cylinder and increasing the service life of the steel rods. On the other hand, the axially uniform material distribution makes the wear rate of the steel rods along the axial direction more consistent, effectively preventing the steel rods' center of gravity from shifting, ensuring the dynamic balance inside the cylinder, thereby reducing the overall vibration of the rod mill and improving the service life of key components such as bearings.

[0016] 2. This invention, by incorporating a steel wire rope, provides a flexible transmission mechanism for the traction of the sealing plate. This effectively absorbs minor impacts and vibrations experienced during the rotation of the sealing plate, preventing jamming or impact damage caused by rigid connections. Furthermore, the tension of the steel wire rope can be adjusted by the number of winding turns. When the slag particle size is large, the release stroke of the steel wire rope can be increased, allowing for a larger opening angle of the sealing plate and complete opening of the release port, preventing large pieces of slag from getting stuck at the release port. Conversely, when the slag is finer, the opening angle can be reduced to slow down the feeding rate of finer slag, preventing overload of the slag inside the cylinder and improving the breaking effect of the steel rod on the slag.

[0017] 3. By setting up a transmission structure of worm gear and worm, the self-locking ability of the worm gear and worm ensures that the sealing plate remains locked after closing. Even if the motor is powered off, it will not automatically open due to gravity or slag pressure, and no auxiliary locking mechanism is required. This greatly improves the safety and reliability of the invention. In addition, the self-locking of the worm gear and worm is not affected by vibration. As long as the self-locking is not damaged, the sealing plate will always remain locked, thus effectively improving the practicality of the invention. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA; Figure 3 This is a schematic diagram of the three-dimensional structure of the hopper in this invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point BB; Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure at the CC section; Figure 6 for Figure 4 Enlarged structural diagram at point D; Figure 7 for Figure 5 Enlarged structural diagram at point E; Figure 8 for Figure 4 Side view structural diagram; Figure 9 for Figure 8 Enlarged structural diagram at point F; Figure 10 This is a three-dimensional structural diagram of the present invention with a traction rod installed; Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure at the middle GG point; Figure 12 for Figure 11 A magnified structural diagram of point H in the middle.

[0019] Among them, 1. Frame; 101. Cylinder; 102. Mounting cover; 103. Drive motor; 104. Discharge port; 105. Annular plate; 106. Mounting port; 107. Connecting ring; 108. Hopper; 109. Mounting plate; 110. Columnar groove; 111. Cover plate; 112. Steel plate; 2. Distribution cylinder; 201. Through groove; 202. Feed inlet; 203. Screw rod; 204. Servo motor; 205. Release mechanism. 206. Enclosure plate; 207. Hinge rod; 208. Pressure sensor; 3. Wire rope; 301. Traction rod; 302. Insert plate; 303. Groove; 304. Connecting spring; 305. Electromagnetic plate; 4. Transmission gear ring; 401. Cavity; 402. Worm gear; 403. Worm; 404. Rack; 5. Toothed belt; 501. Tooth groove; 502. Tooth; 503. Magnet; 504. Electromagnetic ring. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described 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.

[0021] Please see the appendix Figure 1 -Appendix Figure 12 This invention provides a continuous scrap steel crushing and sorting equipment, including a frame 1 and a cylinder 101. The cylinder 101 is rotatably connected to the frame 1 via a mounting cover 102. A drive motor 103 is fixedly installed on one side of the frame 1. The drive motor 103 is used to drive the cylinder 101 to rotate. A discharge port 104 is opened in the middle of the cylinder 101. An annular plate 105 is sleeved on the surface of the cylinder 101. The annular plate 105 is fixedly connected to the frame 1 and rotatably and sealingly connected to the cylinder 101. An installation port 106 communicating with the discharge port 104 is opened on the surface of the annular plate 105. Connecting rings 107 are fixedly installed at both ends of the cylinder 101. The connecting rings 107 are rotatably connected to the mounting cover 102. The end of the mounting cover 102 away from the connecting rings 107 is fixedly connected to the frame 1. Hoppers 108 are fixedly installed on both sides of the frame 1. Steel bars are installed inside the cylinder 101. The cylinder 101 is equipped with a material equalization cylinder 2, which is fixedly connected to the mounting cover 102. The mounting cover 102 has a through groove 201 that communicates with the material equalization cylinder 2 on the side near the material equalization cylinder 2. The side wall of the frame 1 has a feed inlet 202. One end of the feed inlet 202 of the frame 1 is connected to the hopper 108, and the other end is connected to the through groove 201. A screw rod 203 is installed inside the material equalization cylinder 2. The two ends of the screw rod 203 are rotatably connected to two hoppers 108 respectively. A servo motor 204 is fixedly installed on the outer wall of the hopper 108. The servo motor 204 is used to drive the screw rod 203 to rotate. The lower end of the material distribution cylinder 2 is provided with a release port 205, and an opening and closing component is installed inside the release port 205. The opening and closing component is used to control the opening and closing of the release port 205.

[0022] The opening and closing assembly includes a sealing plate 206, which is rotatably connected to the inner wall of the release port 205 via a hinge rod 207. The sealing plate 206 is connected to the output end of the servo motor 204 via a connecting module. A pressure sensor 208 is installed on the upper end of the sealing plate 206.

[0023] Specifically, spiral blades are fixedly connected to the surface of the screw rod 203, and the spiral blades at both ends of the screw rod 203 are arranged in opposite directions. After the steel slag is crushed by the jaw crusher, the large free iron in the steel slag is separated because it cannot be crushed, resulting in small pieces of slag (steel slag) containing granular iron and fine iron powder. The slag is conveyed by the conveying mechanism to the rod mill for crushing. At this time, the slag is conveyed by the conveying mechanism to the hoppers 108 at both ends of the rod mill. Then, the servo motor 204 is controlled to run, so that the servo motor 204 can drive the screw rod 203 to rotate. Since the spiral blades at both ends of the screw rod 203 are arranged in opposite directions, and the two ends of the spiral blades are located in the hoppers 108 at both ends of the frame 1, the rotation... The movable screw 203 can push the slag in the hopper 108 to the middle of the equalization cylinder 2 through the screw blades at both ends. During the process of the screw blades on the surface of the screw 203 pushing the slag to the middle of the equalization cylinder 2, because there is a certain height between the screw blades and the closing plate 206 at the bottom of the equalization cylinder 2, the slag will continuously fill between the screw blades and the closing plate 206. Therefore, the thickness of the slag on the closing plate 206 in the middle of the equalization cylinder 2 is small, while the thickness of the slag on the closing plates 206 at both ends of the equalization cylinder 2 is large. When the height of the slag rises to the screw blades, the screw blades will directly push the slag to accumulate in the middle of the equalization cylinder 2, so that the amount of slag accumulated in the middle of the equalization cylinder 2 gradually increases. Since pressure sensors 208 are installed on the upper end of the sealing plate 206, at least three pressure sensors 208 are provided. Two pressure sensors 208 are located at both ends of the sealing plate 206, and the other pressure sensor 208 is installed in the middle of the sealing plate 206. The two pressure sensors 208 are used to monitor the weight of slag in different areas of the sealing plate 206 in real time. When the weight of slag monitored by the pressure sensor 208 in the middle of the sealing plate 206 is approximately the same as the weight of slag at both ends, the amount of slag in each area at the upper end of the sealing plate 206 is evenly accumulated. At this time, the opening and closing component is controlled to operate, so that the opening and closing component drives the sealing plate 206 to rotate downward, so that the release port 205 is opened, and the slag in the equalization cylinder 2 falls into the cylinder 101 from the release port 205 below. Since the slag in the equalization cylinder 2 falls into the cylinder 101 from the release port 205 at the same time, the slag is evenly distributed in the cylinder 101. Subsequently, the drive motor 103 is controlled to run. Since the output end of the drive motor 103 is fixedly installed with a drive gear, and the surface of the cylinder 101 is fixedly connected with a spur gear ring, the spur gear ring meshes with the drive gear. When the drive motor 103 is running, the drive motor 103 drives the spur gear ring to rotate through the drive gear at the output end, so that the spur gear ring drives the cylinder 101 to rotate, thereby allowing the steel rods inside the cylinder 101 to roll inside the cylinder 101, so that the slag and the steel rods are subjected to centrifugal force, friction force and extrusion force, so that the slag is quickly crushed. The existing rod mill cylinder 101 has a slightly inclined inner wall, so under the action of gravity, the slag tends to move towards the lower end (i.e., the middle). Therefore, the crushed slag will concentrate in the middle of the rod mill and fall into the discharge port 104. Because a filter screen is installed in the discharge port 104, the uncrushed slag is blocked by the filter screen, while the crushed slag (granular iron and fine iron powder) passes directly through the filter screen and is discharged from the discharge port 104. Because the discharge port 104 is connected to the installation port 106 of the annular plate 105, the crushed slag (granular iron and fine iron powder) is discharged and collected through the installation port 106. The collected granular iron and fine iron powder are transported to the magnetic separator through the feeding mechanism of the magnetic separator, so that the granular iron is magnetically absorbed and collected. The final fine powder tailings containing fine iron powder are stabilized and then used to produce steel slag powder (cement admixture), roadbed materials or brick making, thereby realizing the recycling of fine iron powder. This invention provides a material distribution cylinder 2 between the rod mill cylinder 101 and the feed hopper 108. The spiral rod 203 within the distribution cylinder 2 uniformly mixes and axially distributes the steel slag from the hopper 108 within the distribution cylinder 2. After the slag in the distribution cylinder 2 has accumulated evenly, it enters the cylinder 101 through the release port 205. This allows the steel rods in each section of the cylinder 101 to jointly undertake the crushing task. On one hand, this effectively avoids excessive wear at both ends of the steel rods, preventing slag accumulation at both ends of the cylinder 101 and extending the service life of the steel rods. On the other hand, the axially uniform material distribution makes the wear rate of the steel rods along the axial direction more consistent, effectively preventing the steel rod's center of gravity from shifting, ensuring dynamic balance within the cylinder 101, thereby reducing the overall vibration of the rod mill and further extending the service life of key components such as bearings.

[0024] The connection module includes a steel wire rope 3. A traction rod 301 is rotatably mounted on the side wall of the frame 1. One end of the steel wire rope 3 is fixedly connected to the closed plate 206, and the other end is fixedly connected to the traction rod 301. The traction rod 301 is connected to the output end of the servo motor 204 through a transmission unit. A locking unit is installed on the inner wall of the release port 205.

[0025] The locking unit includes a plate 302, and a groove 303 is provided on the inner wall of the release port 205. The plate 302 is slidably and sealingly connected in the groove 303. The plate 302 and the bottom of the groove 303 are connected by a connecting spring 304. An electromagnetic plate 305 is embedded in the bottom of the groove 303.

[0026] Specifically, in the initial state, the servo motor 204 drives the screw rod 203 to transport slag into the equalization cylinder 2. After the slag in the equalization cylinder 2 is evenly accumulated, the transmission unit is controlled to operate, so that the servo motor 204 can drive the traction rod 301 to rotate through the transmission unit. The rotating traction rod 301 can release the steel wire rope 3 wound on the surface. At the same time, the electromagnetic plate 305 is energized, so that the electromagnetic plate 305 can generate a magnetic attraction force on the insertion plate 302, so that the insertion plate 302 squeezes the connecting spring 304 into the groove 303. The insertion plate 302 no longer supports the upper closed plate 206. Under its own gravity, the closed plate 206 rotates downward along the hinge end of the hinge rod 207, so that the release port 205 continuously opens. Under its own gravity, the slag in the equalization cylinder 2 falls from the release port 205 into the cylinder 101. After the slag in the equalizing cylinder 2 has completely fallen into the cylinder body 101, the servo motor 204 is controlled to drive the traction rod 301 to rotate in the opposite direction. The reverse-rotating traction rod 301 can wrap the wire rope 3 around its surface, causing the wire rope 3 to pull the closing plate 206 to rotate upward, so that the closing plate 206 blocks the release port 205. When the closing plate 206 completely blocks the release port 205, the closing plate 206 passes the groove 303. At this time, the electromagnetic plate 305 is de-energized, so that the insertion plate 302 is no longer affected by the electromagnetic force. The adsorption of plate 305 causes the insert plate 302 to extend out of the groove 303 under the push of the restoring force of the connecting spring 304. The insert plate 302 extending out of the groove 303 supports the lower end face of the closing plate 206. Then, the control transmission unit is disconnected, so that the servo motor 204 will not drive the traction rod 301 during the process of driving the screw rod 203 to transport slag. This avoids the wire rope 3 from being released first and then wrapped, which would eventually cause the wire rope 3 to be tightened and break, thus ensuring the service life of the wire rope 3. This invention, by setting up a steel wire rope 3, enables the steel wire rope 3 to pull the closed plate 206 with flexible transmission characteristics, effectively absorbing the minor impacts and vibrations experienced by the closed plate 206 during rotation, avoiding jamming or impact damage caused by rigid connection. At the same time, the tension of the steel wire rope 3 can be adjusted by the number of winding turns. When the slag particle size is large, the release stroke of the steel wire rope 3 can be increased to make the opening angle of the closed plate 206 larger, and the release port 205 fully open, preventing large pieces of slag from getting stuck at the release port 205. When the slag is fine, the opening angle can be reduced to slow down the feeding rate of finer slag, prevent the slag inside the cylinder 101 from being overloaded, and improve the breaking effect of the steel rod on the slag.

[0027] The connection module includes a transmission gear ring 4. A cavity 401 is provided inside the frame 1. The transmission gear ring 4 is rotatably connected in the cavity 401. The transmission gear ring 4 is fixedly installed at one end of the hinge rod 207. The transmission gear ring 4 is connected to the servo motor 204 through a self-locking unit.

[0028] The self-locking unit includes a worm gear 402 and a worm 403. The worm 403 is rotatably connected to the frame 1. The worm 403 is connected to the output end of the servo motor 204 through a transmission unit. The worm 403 meshes with the worm gear 402. The worm gear 402 is rotatably connected to the frame 1. The worm gear 402 meshes with the rack 404. The transmission gear ring 4 meshes with the rack 404.

[0029] Specifically, in the initial state, the servo motor 204 drives the screw 203 to convey slag into the equalization cylinder 2 until the slag in the equalization cylinder 2 is evenly accumulated. Then, the transmission unit is controlled to run. At this time, the servo motor 204 drives the worm 403 to rotate through the transmission unit, so that the rotating worm 403 can drive the meshed worm wheel 402 to rotate. By setting the two mutually perpendicular surfaces of the rack 404 as meshing surfaces, one meshing surface of the rack 404 meshes with the worm wheel 402, and the other meshing surface meshes with the transmission gear ring 4. Therefore, the rotating worm gear 402 can drive the meshing rack 404 to move closer to the transmission gear ring 4, so that the rack 404 pushes the meshing transmission gear ring 4 to rotate, so that the transmission gear ring 4 can drive the hinge rod 207 fixed to it to rotate. Because the hinge rod 207 is fixed to the closing plate 206, the hinge rod 207 can drive the closing plate 206 fixed to it to rotate downward, so that the release port 205 opens, so that the slag in the equalizing cylinder 2 falls from the release port 205 into the cylinder 101. After the slag in the equalizing cylinder 2 has completely fallen into the cylinder 101, the servo motor 204 is controlled to drive the worm 403 to rotate in the reverse direction through the transmission unit. This causes the worm 403 to drive the worm wheel 402 to rotate in the reverse direction. The worm wheel 402 then pushes the rack 404, which meshes with it, to move away from the transmission gear ring 4. This causes the rack 404 to push the transmission gear ring 4 to rotate in the reverse direction. The transmission gear ring 4 then drives the closing plate 206 to rotate upward through the hinge rod 207. This allows the closing plate 206 to block the release port 205. Subsequently, the transmission unit is controlled to close, so that the servo motor 204 will no longer drive the worm 403 to rotate through the transmission unit. Because the worm wheel 402 and worm 403 have self-locking characteristics, the closing plate 206, which is blocked in the release port 205, will not rotate, thus effectively sealing the release port 205. This invention, through the transmission structure of the worm gear 402 and worm 403, enables the self-locking capability of the worm gear 402 and worm 403 to keep the sealing plate 206 locked after it is closed. Even if the motor is powered off, it will not automatically open due to gravity or slag pressure, and no auxiliary locking mechanism is required. This significantly improves the safety and reliability of the invention. In addition, the self-locking of the worm gear 402 and worm 403 is not affected by vibration. As long as the self-locking is not damaged, the sealing plate 206 will always remain in the locked position, thereby effectively improving the practicality of the invention.

[0030] The transmission unit includes a toothed belt 5, and a toothed groove 501 is formed on the surface of the output end of the servo motor 204. A tooth 502 is slidably connected in the toothed groove 501. A magnet 503 is embedded on the side of the tooth 502 near the toothed groove 501. An electromagnetic ring 504 is embedded at the bottom of the toothed groove 501. The toothed belt 5 is made of PTFE material. The servo motor 204 meshes with the toothed belt 5 through the tooth 502.

[0031] Specifically, the output end of the servo motor 204 is connected to the traction rod 301 or the worm gear 403 via a toothed belt 5. Initially, the electromagnetic ring 504 is de-energized. At this time, the teeth 502 are attracted to the bottom of the groove 501 by the magnet 503. Therefore, the end of the teeth 502 away from the bottom of the groove 501 does not contact the toothed belt 5. At this time, the servo motor 204 is controlled to run, allowing it to directly drive the screw rod 203 to rotate. The screw rod 203 pushes the slag into the equalization cylinder 2 through its spiral blades until the slag in the equalization cylinder 2 is evenly accumulated. Then, the electromagnetic ring 504 is energized, causing the electric... The magnetic ring 504 can generate the same magnetic poles as the magnet 503, so that the magnetic ring 504 generates a magnetic repulsion force on the magnet 503. Under the push of the magnetic repulsion force, the magnet 503 drives the tooth 502 fixed to it to extend out of the tooth groove 501, so that the tooth 502 extending out of the tooth groove 501 can mesh with the toothed belt 5. The servo motor 204 is driven through the meshing of the tooth 502 and the toothed belt 5. At this time, the servo motor 204 can drive the toothed belt 5 to rotate through the tooth 502, so that the toothed belt 5 drives the traction rod 301 or worm gear 403 meshed with it to rotate, thereby indirectly driving the closing plate 206 to rotate downward, so that the release port 205 opens. When the servo motor 204 runs in reverse, it drives the traction rod 301 or the worm gear 403 to rotate in the opposite direction. This causes the traction rod 301 to pull the closing plate 206 to block the release port 205 via the wire rope 3. The worm gear 403 then drives the rack 404 and the transmission gear ring 4 to rotate in the opposite direction via the worm wheel 402. This causes the transmission gear ring 4 to rotate the closing plate 206 upwards, blocking the release port 205. Subsequently, the electromagnetic ring 504 is de-energized, preventing it from generating magnetic repulsion on the magnet 503. The iron 503 generates a magnetic attraction force on the bottom of the tooth groove 501, causing the magnet 503 to drive the tooth 502 into the tooth groove 501, thereby causing the toothed belt 5 to no longer mesh with the output end of the servo motor 204. Since the toothed belt 5 is made of PTFE material, it has the advantages of smooth surface and low coefficient of friction. At this time, as the servo motor 204 runs, the toothed belt 5 slides into contact with the output end of the servo motor 204, thus preventing the servo motor 204 from driving the traction rod 301 or worm gear 403 to rotate through the toothed belt 5.

[0032] An annular mounting plate 109 is provided inside the cylinder 101. The mounting plate 109 is fixedly connected to the mounting cover 102. The material distribution cylinder 2 is detachably connected to the mounting plate 109 by bolts. A blocking unit is installed on the side of the mounting plate 109 near the cylinder 101. The blocking unit is used to prevent the steel rod from colliding with the material distribution cylinder 2.

[0033] One end of the mounting cover 102 has a cylindrical groove 110 that communicates with the cylinder 101. The side of the mounting cover 102 away from the cylinder 101 is threaded with a cover plate 111. The cover plate 111 is detachably connected to the frame 1 by bolts.

[0034] The barrier unit includes a steel plate 112, which is fixedly connected to the mounting plate 109. The upper surface of the steel plate 112 is inclined and the steel plate 112 is configured as an inverted V-shape.

[0035] Specifically, by setting a cylindrical groove 110 communicating with the cylinder 101 at one end of the mounting cover 102, when steel bars need to be added, simply remove the bolts between the cover plate 111 and the frame 1 to separate the cover plate 111 from the frame 1, then rotate the cover plate 111 to spirally separate it from one end of the mounting cover 102. After removing the cover plate 111, the cylindrical groove 110 at one end of the mounting cover 102 opens. At this time, the operator uses a crane to lift the steel bars to the opening of the cylindrical groove 110, and then pushes the steel bars to enter the cylindrical groove 110, thereby allowing the steel bars to enter the cylinder 101 through the cylindrical groove 110. The existing rod mill has an inspection port on the outer ring wall of the cylinder 101. A baffle is fixedly installed at the inspection port. The inspection port is not only used by the operator to inspect the wear of the steel rods inside the cylinder 101, but the operator can also enter the cylinder 101 through the inspection port to assist in the removal and replacement of the steel rods. If the steel bar directly impacts the material distribution cylinder 2 during the rolling process of the cylinder 101, it will not only damage the structure of the material distribution cylinder 2, but may also cause fatigue cracks at the connection between the material distribution cylinder 2 and the cylinder 101 due to the impact, which may lead to leakage or structural failure. To address this, the present invention provides a steel plate 112, which forms a physical barrier between the steel rod and the uniform material cylinder 2, preventing the steel rod from colliding with the uniform material cylinder 2. Furthermore, by providing a mounting plate 109, the steel plate 112 can be mounted on the side of the mounting plate 109 away from the mounting cover 102, thus eliminating the need for the steel plate 112 to be connected to the mounting cover 102 and reducing the number of bolt holes on the surface of the mounting cover 102. Simultaneously, the mounting plate 109 prevents the steel rod from directly colliding with the mounting cover 102, reducing the impact of the steel rod on the uniform material cylinder 2. The damage caused by the cover 102 is reduced, thus improving the structural strength and service life of the cover 102. On the other hand, the connecting ring 107 is rotatably connected between the mounting plate 109 and the cover 102, so that the mounting plate 109 effectively supports the inner ring wall of the connecting ring 107. In addition, the mounting plate 109 is detachably connected, so that when the steel plate 112 needs to be inspected or replaced, it is not necessary to remove the entire cover 102. Only the mounting plate 109 needs to be removed to quickly complete the replacement and maintenance of the steel plate 112, reducing the maintenance difficulty and time cost. By setting the steel plate 112, the steel plate 112 can block both ends of the steel rod, preventing the steel rod from being driven to the material distribution cylinder 2 by the cylinder 101 under the action of centrifugal force and friction, and preventing the steel rod from impacting the material distribution cylinder 2, thus improving the service life of the material distribution cylinder 2. If the rolling steel rod tilts due to the collision, and one end of the steel rod falls on the upper end of the steel plate 112, because the upper end of the steel plate 112 is inclined downward and the steel plate 112 is set in an inverted V shape, the steel rod falling on the upper end of the steel plate 112 will slide down quickly along the inclined surface of the steel plate 112, avoiding the steel rod from accumulating or getting stuck at the end of the steel plate 112, so that the steel rod always maintains an orderly rolling state, which is conducive to maintaining the uniform distribution of slag in the cylinder 101 and the stable crushing effect.

[0036] Working process: Spiral blades are fixedly connected to the surface of the screw rod 203, and the spiral blades at both ends of the screw rod 203 are arranged in opposite directions. After the steel slag is crushed by the jaw crusher, the large free iron in the steel slag is separated because it cannot be crushed, resulting in small pieces of slag (steel slag) containing granular iron and fine iron powder. The slag is conveyed to the rod mill for crushing by the conveying mechanism. At this time, the slag is conveyed to the hoppers 108 at both ends of the rod mill by the conveying mechanism. Then, the servo motor 204 is controlled to run, so that the servo motor 204 can drive the screw rod 203 to rotate. Since the spiral blades at both ends of the screw rod 203 are arranged in opposite directions, and the two ends of the spiral blades are located in the hoppers 108 at both ends of the frame 1, the rotating screw rod 203 can push the slag in the hoppers 108 to the middle of the equalization cylinder 2 through the spiral blades at both ends. In the initial state, the electromagnetic ring 504 is de-energized. At this time, the tooth 502 is attracted to the bottom of the groove 501 by the magnet 503. Therefore, the end of the tooth 502 away from the bottom of the groove 501 does not contact the toothed belt 5. At this time, the servo motor 204 is controlled to run, so that the servo motor 204 can directly drive the screw rod 203 to rotate. The screw rod 203 pushes the slag into the equalization cylinder 2 through the spiral blades on its surface. During the process of the spiral blades on the surface of the screw rod 203 pushing the slag to the middle of the equalization cylinder 2, because there is a certain height between the spiral blades and the closing plate 206 at the bottom of the equalization cylinder 2, the slag will continuously fill between the spiral blades and the closing plate 206. Therefore, the thickness of the slag on the closing plate 206 in the middle of the equalization cylinder 2 is small, while the thickness of the slag on the closing plates 206 at both ends of the equalization cylinder 2 is large. When the height of the slag rises to the spiral blades, the spiral blades will directly push the slag to accumulate in the middle of the equalization cylinder 2, so that the accumulation of slag in the middle of the equalization cylinder 2 shows a gradual increasing trend. Since pressure sensors 208 are installed on the upper end of the sealing plate 206, at least three pressure sensors 208 are provided. Two pressure sensors 208 are located at both ends of the sealing plate 206, and the third pressure sensor 208 is installed in the middle of the sealing plate 206. The two pressure sensors 208 are used to monitor the weight of slag in different areas of the sealing plate 206 in real time. When the weight of slag monitored by the pressure sensor 208 in the middle of the sealing plate 206 is approximately the same as the weight of slag at both ends, the amount of slag in each area of ​​the upper end of the sealing plate 206 is uniformly accumulated. This controls the electromagnetic ring 504 to be energized, so that the electromagnetic ring 504 can generate a phase with the magnet 503. The same magnetic poles cause the electromagnetic ring 504 to generate a magnetic repulsion force on the magnet 503. Under the push of the magnetic repulsion force, the magnet 503 drives the tooth 502 fixed to it to extend out of the tooth groove 501, so that the tooth 502 extending out of the tooth groove 501 can mesh with the toothed belt 5. The servo motor 204 is driven through the meshing of the tooth 502 and the toothed belt 5. At this time, the servo motor 204 can drive the toothed belt 5 to rotate through the tooth 502, so that the toothed belt 5 drives the traction rod 301 or worm gear 403 meshed with it to rotate, thereby facilitating the subsequent drive of the servo motor 204 to drive the closing plate 206 to rotate downward, so that the release port 205 opens. The opening and closing assembly of the wire rope 3 is installed as follows: When the slag in the equalizing cylinder 2 is evenly accumulated, the rotating traction rod 301 can release the wire rope 3 wound on the surface. At the same time, the electromagnetic plate 305 is energized, so that the electromagnetic plate 305 can generate a magnetic attraction force on the insert plate 302, so that the insert plate 302 squeezes the connecting spring 304 into the groove 303, so that the insert plate 302 no longer supports the upper closing plate 206, and the closing plate 206 rotates downward along the hinge end of the hinge rod 207 under its own gravity, so that the release port 205 continuously opens, and the slag in the equalizing cylinder 2 falls from the release port 205 into the cylinder 101 under its own gravity. The opening and closing assembly for installing worm gear 402 and worm 403: When the slag in the equalizing cylinder 2 is evenly accumulated, the rotating worm 403 can drive the meshed worm gear 402 to rotate. By setting the two mutually perpendicular surfaces of the rack 404 as meshing surfaces, one meshing surface of the rack 404 meshes with the worm gear 402, and the other meshing surface meshes with the transmission gear ring 4. Therefore, the rotating worm gear 402 can drive the meshed rack 404 to move closer to the transmission gear ring 4, so that the rack 404 pushes the meshed transmission gear ring 4 to rotate, so that the transmission gear ring 4 can drive the hinge rod 207 fixed to it to rotate. Because the hinge rod 207 is fixed to the closing plate 206, the hinge rod 207 can drive the closing plate 206 fixed to it to rotate downward, so that the release port 205 opens, so that the slag in the equalizing cylinder 2 falls from the release port 205 into the cylinder 101. Steel bar crushing stage: Control the operation of drive motor 103. Since drive gear is fixedly installed at the output end of drive motor 103, and spur gear ring is fixedly connected to the surface of cylinder 101, the spur gear ring meshes with drive gear. When drive motor 103 is running, drive motor 103 drives spur gear ring to rotate through drive gear at output end, so that spur gear ring drives cylinder 101 to rotate, so that steel bars inside cylinder 101 can roll inside cylinder 101, so that slag and steel bars are subjected to centrifugal force, friction force and extrusion force, so that slag is crushed quickly. The existing rod mill cylinder 101 has a slightly inclined inner wall, so under the action of gravity, the slag tends to move towards the lower end (i.e., the middle). Therefore, the crushed slag will concentrate in the middle of the rod mill and fall into the discharge port 104. Because a filter plate is installed in the discharge port 104, the uncrushed slag is blocked by the filter plate, while the crushed slag (granular iron and fine iron powder) passes directly through the filter plate and is discharged from the discharge port 104. Since the discharge port 104 is connected to the mounting port 106 of the annular plate 105, the crushed slag (granular iron and fine iron powder) is discharged and collected through the mounting port 106. The collected granular iron and fine iron powder are transported to the magnetic separator by the feeding mechanism of the magnetic separator, so that the granular iron is magnetically absorbed and collected. The final fine powder tailings containing fine iron powder are stabilized and then used to produce steel slag powder (cement admixture), roadbed materials or brick making, thereby realizing the recycling of fine iron powder.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous scrap steel crushing and sorting device, comprising a frame (1) and a cylinder (101), wherein the cylinder (101) is rotatably connected to the frame (1) via a mounting cover (102), a drive motor (103) is fixedly mounted on one side of the frame (1), the drive motor (103) is used to drive the cylinder (101) to rotate, a discharge port (104) is provided in the middle of the cylinder (101), an annular plate (105) is fitted on the surface of the cylinder (101), the annular plate (105) is fixedly connected to the frame (1), the annular plate (105) is rotatably and sealingly connected to the cylinder (101), and an mounting port (106) communicating with the discharge port (104) is provided on the surface of the annular plate (105), characterized in that: Connecting rings (107) are fixedly installed at both ends of the cylinder (101). The connecting rings (107) are rotatably connected to the mounting cover (102). The end of the mounting cover (102) away from the connecting rings (107) is fixedly connected to the frame (1). Hoppers (108) are fixedly installed on both sides of the frame (1). Steel bars are installed inside the cylinder (101). The cylinder (101) is equipped with a material equalization cylinder (2) inside. The material equalization cylinder (2) is fixedly connected to the mounting cover (102). The mounting cover (102) has a through groove (201) on the side near the material equalization cylinder (2) that communicates with the material equalization cylinder (2). The side wall of the frame (1) is provided with a feed inlet (202). One end of the feed inlet (202) of the frame (1) is connected to the hopper (108), and the other end is connected to the through groove (201). A screw rod (203) is installed inside the material equalization cylinder (2). The two ends of the screw rod (203) are rotatably connected to two hoppers (108) respectively. A servo motor (204) is fixedly installed on the outer wall of the hopper (108). The servo motor (204) is used to drive the screw rod (203) to rotate. The lower end of the material distribution cylinder (2) is provided with a release port (205), and an opening and closing component is installed in the release port (205). The opening and closing component is used to control the opening and closing of the release port (205).

2. The continuous scrap steel crushing and sorting equipment according to claim 1, characterized in that: The opening and closing assembly includes a sealing plate (206), which is rotatably connected to the inner wall of the release port (205) via a hinge rod (207). The sealing plate (206) is connected to the output end of a servo motor (204) via a connecting module. A pressure sensor (208) is installed on the upper end of the sealing plate (206).

3. The continuous scrap steel crushing and sorting equipment according to claim 2, characterized in that: The connection module includes a steel wire rope (3), and a traction rod (301) is rotatably installed on the side wall of the frame (1). One end of the steel wire rope (3) is fixedly connected to the closed plate (206), and the other end is fixedly connected to the traction rod (301). The traction rod (301) is connected to the output end of the servo motor (204) through a transmission unit. A locking unit is installed on the inner wall of the release port (205).

4. The continuous scrap steel crushing and sorting equipment according to claim 3, characterized in that: The locking unit includes a insert plate (302), and the inner wall of the release port (205) is provided with a groove (303). The insert plate (302) is slidably and sealingly connected in the groove (303). The insert plate (302) and the bottom of the groove (303) are connected by a connecting spring (304). An electromagnetic plate (305) is embedded in the bottom of the groove (303).

5. A continuous scrap steel crushing and sorting equipment according to claim 2, characterized in that: The connection module includes a transmission gear ring (4), and the frame (1) has a cavity (401) inside. The transmission gear ring (4) is rotatably connected in the cavity (401). The transmission gear ring (4) is fixedly installed at one end of the hinge rod (207). The transmission gear ring (4) is connected to the servo motor (204) through a self-locking unit.

6. The continuous scrap steel crushing and sorting equipment according to claim 5, characterized in that: The self-locking unit includes a worm gear (402) and a worm (403). The worm (403) is rotatably connected to the frame (1). The worm (403) is connected to the output end of the servo motor (204) through a transmission unit. The worm (403) meshes with the worm gear (402). The worm gear (402) is rotatably connected to the frame (1). The worm gear (402) meshes with the rack (404). The transmission gear ring (4) meshes with the rack (404).

7. A continuous scrap steel crushing and sorting equipment according to claim 3 or 6, characterized in that: The transmission unit includes a toothed belt (5), and the surface of the output end of the servo motor (204) is provided with a toothed groove (501). A tooth (502) is slidably connected in the toothed groove (501). A magnet (503) is embedded on the side of the tooth (502) near the toothed groove (501). An electromagnetic ring (504) is embedded at the bottom of the toothed groove (501). The toothed belt (5) is made of PTFE material. The servo motor (204) meshes with the toothed belt (5) through the tooth (502).

8. The continuous scrap steel crushing and sorting equipment according to claim 7, characterized in that: An annular mounting plate (109) is provided inside the cylinder (101). The mounting plate (109) is fixedly connected to the mounting cover (102). The material equalization cylinder (2) is detachably connected to the mounting plate (109) by bolts. A blocking unit is installed on the side of the mounting plate (109) near the cylinder (101). The blocking unit is used to prevent the steel rod from colliding with the material equalization cylinder (2).

9. A continuous scrap steel crushing and sorting equipment according to claim 1, characterized in that: The mounting cover (102) has a cylindrical groove (110) at one end that communicates with the cylinder (101). The mounting cover (102) is threaded with a cover plate (111) on the side away from the cylinder (101). The cover plate (111) is detachably connected to the frame (1) by bolts.

10. A continuous scrap steel crushing and sorting equipment according to claim 8, characterized in that: The barrier unit includes a steel plate (112), which is fixedly connected to the mounting plate (109). The upper surface of the steel plate (112) is inclined and the steel plate (112) is configured as an inverted V shape.

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