Rotary kiln drying device

Abstract

The utility model relates to the technical field of rotary kiln waste heat utilization, in particular to a rotary kiln drying device which can conduct double crushing on mineral aggregate by arranging a first crushing mechanism and a second crushing mechanism, crushing rollers in the first crushing mechanism and crushing teeth on the first crushing mechanism can conduct primary crushing on large mineral aggregate, and the crushing rollers in the second crushing mechanism can conduct secondary crushing on the large mineral aggregate; for example, when ore raw materials are treated, large ore blocks can be crushed into small particles, extrusion plates and grinding teeth in the second crushing mechanism further extrude and crush preliminarily crushed ore through relative sliding of the two extrusion plates, the particle size of the ore is effectively reduced, the crushing effect of the ore is improved, and the crushing efficiency of the ore is improved. Better material conditions are provided for the subsequent drying process, so that the materials can be in full contact with heat, the drying speed is increased, and the drying efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of rotary kiln waste heat utilization, and in particular to a rotary kiln drying device. Background Art

[0002] As a device for roasting mineral powder, the internal temperature of the rotary kiln is very high. Although various thermal insulation measures are taken on the inner wall of the rotary kiln, its surface can still reach a certain temperature, resulting in a large amount of heat energy being directly dissipated into the air, causing energy waste. The mineral powder exposed to the air for a long time is affected by moisture and becomes damp. The damp mineral powder directly affects the roasting time of the mineral powder, and the roasting efficiency of the mineral powder is low.

[0003] A search revealed Chinese patent application number CN202021821605.4, which discloses a rotary kiln waste heat drying device. The device comprises a platform straddling the top of the rotary kiln, a distribution vehicle mounted on the platform that moves back and forth, a liftable scraper mounted on the bottom of the distribution vehicle, a crane mounted above the front end of the platform that moves left and right, and a discharge port at the rear end of the platform. This device uses the heat lost to the air by the rotary kiln to dry the mineral powder, reducing energy waste. The dried mineral powder can shorten subsequent roasting time and improve roasting efficiency.

[0004] Regarding the above-mentioned related technologies, the inventors found the following defects: the crushing rollers in the hopper in the above-mentioned patent are arranged front to back. For some materials with higher hardness or larger blocks, this simple front to back arrangement of crushing rollers may not be able to fully crush the materials. For example, when processing large pieces of ore materials, relying solely on the front to back arrangement of crushing rollers may result in uneven crushing, causing some larger block materials to enter the drying stage, affecting the drying efficiency.

[0005] Therefore, a rotary kiln drying device is invented to solve the problems arising from the above-mentioned background technology. Utility Model Content

[0006] In order to utilize the heat generated by the rotary kiln to dry the damp mineral powder and at the same time improve the effect of crushing larger pieces of mineral powder materials, the present application provides a rotary kiln drying device.

[0007] The rotary kiln drying device provided by the present application adopts the following technical solution: it includes a fixed frame, wherein the rotary kiln is mounted on the fixed frame, and a drying material trough located above the rotary kiln is provided on the top of the fixed frame, and a feeding device for feeding materials into the drying material trough is provided on the drying material trough, and a walking assembly is provided at the bottom of the feeding device, wherein the walking assembly includes rotatable walking wheels and a fixed seat, and the fixed seat is slidably connected to the top of the drying material trough, and guide platforms are respectively provided on both sides of the drying material trough, and the walking wheels are rotatably connected to the fixed seat and can move along the guide platforms on their corresponding sides respectively, and the feeding device includes a discharge box, the discharge box is fixed on the walking assembly, and a feeding port is provided on the top of the discharge box, a first crushing mechanism for crushing mineral materials is provided in the discharge box, a screen plate is provided below the first crushing mechanism, and a second crushing mechanism located above the screen plate is provided in the discharge box.

[0008] The first crushing mechanism includes a crushing roller, which is rotatably connected to the discharge box and has a plurality of crushing teeth arranged on its circumference.

[0009] Optionally, the second crushing mechanism includes extrusion plates arranged on both sides of the discharge box, and a plurality of grinding teeth are provided on the extrusion plates. The two extrusion plates can slide relative to each other, and the two sides of the discharge box are respectively provided with a first hydraulic telescopic rod that can drive the extrusion plate on the corresponding side to slide, and the first hydraulic telescopic rod is fixed on the discharge box.

[0010] Optionally, a discharge channel is provided at the bottom of the discharge box, and a rotatable auger is provided in the discharge channel.

[0011] Optionally, the walking assembly is provided with a spreading mechanism that can spread the mineral materials in the drying trough, and the spreading mechanism includes a flipping plate that can move up and down, and the flipping plate is slidably connected to the walking assembly, and a second hydraulic telescopic rod is provided on the walking assembly, and the bottom of the second hydraulic telescopic rod is fixedly connected to the flipping plate, and a connecting rod is hingedly connected to the fixed seat, and a flattening plate is provided on the fixed seat, and limiting grooves are respectively provided at the opposite ends of the flattening plate and the flipping plate, and the connecting rod is located between the two, and the two ends of the connecting rod are respectively inserted into the limiting grooves on their corresponding sides, and a fixed compression spring is provided on the top of the flattening plate, and the top of the fixed compression spring is fixed on the fixed seat.

[0012] Optionally, a driving motor is provided on the discharge box, the output end of the driving motor is fixedly connected to the rotating hinge dragon, the output end of the driving motor is provided with an active friction wheel, a rotatable driven shaft is provided on the discharge box, a driven friction wheel is provided on the driven shaft for transmission connection with the active friction wheel, a driving pulley is provided on the driven shaft, and a driven pulley which can be connected to the driving pulley for transmission is provided on the crushing roller.

[0013] In summary, this application has the following beneficial technical effects:

[0014] 1. By setting up the first crushing mechanism and the second crushing mechanism, the ore can be double-crushed. The crushing rollers and the crushing teeth on the first crushing mechanism can perform preliminary crushing on larger pieces of ore. For example, when processing ore raw materials, larger ore blocks can be crushed into smaller particles. The extrusion plates and grinding teeth in the second crushing mechanism further squeeze and crush the preliminarily crushed ore through the relative sliding of the two extrusion plates, effectively reducing the particle size of the ore and improving the crushing effect of the ore. This provides better material conditions for the subsequent drying process, allowing the material to be more fully exposed to heat, accelerating the drying speed and improving the drying efficiency.

[0015] 2. The traveling wheels move along the guide platform, ensuring the stability and directionality of the feeding device. During the feeding process, the feeding device can distribute materials at different positions as needed, avoiding the concentrated accumulation of materials in a certain area. The setting of the spreading mechanism further improves the uniformity of the distribution. The turning plate can move up and down under the action of the second hydraulic telescopic rod to turn the mineral material and make it loose initially. The turning plate cooperates with the mineral material to evenly spread the mineral material in the drying trough.

[0016] 3. The discharge channel at the bottom of the discharge box is equipped with a rotating auger. Once the crushed material passes through the screen plate and enters the discharge channel, the rotating auger rotates to discharge the material in an orderly manner, preventing blockage at the discharge port. Especially for viscous materials, the rotating auger effectively promotes material discharge, ensuring continuous material feeding and improving the operating efficiency of the entire drying unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the device is shown in Figure 2. Figure I ;

[0018] Figure 2 is a schematic diagram of a full cutaway of the device;

[0019] Figure 3 This is a schematic diagram of the structure of the feeding device of this device Figure I ;

[0020] Figure 4 This is a schematic diagram of the structure of the feeding device of this device Figure II ;

[0021] Figure 5 This is a schematic diagram of the internal components of the discharge box of the device;

[0022] Figure 6 For this device Figure 2 A magnified view of middle A;

[0023] Among them, 1. fixed frame, 2. rotary kiln, 3. drying trough, 4. feeding device, 5. walking assembly, 6. walking wheel, 7. fixed seat, 8. guide platform, 9. discharge box, 10. first crushing mechanism, 11. screen plate, 12. second crushing mechanism, 13. crushing roller, 14. crushing teeth, 15. extrusion plate, 16. grinding teeth, 17. first hydraulic telescopic rod, 18. discharge channel, 19. rotating auger, 20. spreading mechanism, 21. turning plate, 22. second hydraulic telescopic rod, 23. connecting rod, 24. flat spreading plate, 25. limiting groove, 26. fixed compression spring, 27. driving motor, 28. active friction wheel, 29. driven shaft, 30. driven friction wheel, 31. active pulley, 32. driven pulley. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0025] Reference Figure 1 、 Figure 5An embodiment shown is as follows: it includes a fixed frame 1, on which a rotary kiln 2 is mounted and fixed. The rotary kiln 2 is fixedly connected to the middle of the fixed frame 1 by bolts. It is the main place for drying operation, and the material is dried therein. The fixed frame 1 is used to set up and fix the rotary kiln 2 to provide a stable support structure for the entire device. The top of the fixed frame 1 is fixedly connected to a drying trough 3 located above the rotary kiln 2 by bolts. A discharge pipe is provided on one side of the drying trough 3, and the material in the drying trough 3 is discharged through the storage pipe. A feeding device 4 for feeding into the drying trough 3 is provided on the drying trough 3, and a walking assembly 5 is provided at the bottom of the feeding device 4. The walking assembly 5 includes a rotatable The movable walking wheel 6 and the fixed seat 7 also include a driving system for driving the walking wheel 6 to rotate. The fixed seat 7 is slidably connected to the top of the drying trough 3. Guide platforms 8 are respectively provided on both sides of the drying trough 3. The walking wheel 6 is rotatably connected to the fixed seat 7 and can walk along the guide platforms 8 on its corresponding sides. The feeding device 4 includes a discharge box 9, which is fixed to the walking assembly 5. A feeding port is provided on the top of the discharge box 9. A first crushing mechanism 10 for crushing the mineral material is provided in the discharge box. A screen plate 11 is provided below the first crushing mechanism 10. The screen plate 11 is fixed inside the discharge box 9. A second crushing mechanism 12 located above the screen plate 11 is provided in the discharge box 9.

[0026] Reference Figure 5 In one embodiment shown, the first crushing mechanism 10 includes a crushing roller 13, on which a plurality of crushing teeth 14 are fixedly welded along the circumference. When the ore enters the discharge box 9, the crushing roller 13 rotates, and the crushing teeth 14 strike and crush the ore, thereby initially crushing larger pieces of ore into smaller particles.

[0027] The second crushing mechanism 12 includes an extrusion plate 15 arranged on both sides of the discharge box 9, and a plurality of grinding teeth 16 are fixedly welded on the extrusion plate 15. The two extrusion plates 15 can slide relative to each other. The two sides of the discharge box 9 are respectively fixedly connected with a first hydraulic telescopic rod 17 that can drive the extrusion plate 15 on the corresponding side to slide. The first hydraulic telescopic rod 17 is fixed on the discharge box 9. The first hydraulic telescopic rod 17 on both sides of the discharge box 9 can drive the extrusion plates 15 to slide relative to each other, so as to squeeze and crush the mineral materials that have been preliminarily crushed, and further reduce the particle size of the mineral materials. By arranging the first crushing mechanism 10 and the second crushing mechanism 12, the mineral materials can be double crushed. The crushing roller 13 and the crushing teeth 14 thereon in the first crushing mechanism 10 can preliminarily crush larger pieces of mineral materials. The extrusion plate 15 and the grinding teeth 16 in the second crushing mechanism 12 further squeeze and crush the preliminarily crushed mineral materials through the relative sliding of the two extrusion plates 15, so that the materials can be more fully exposed to heat, thereby accelerating the drying speed and improving the drying efficiency.

[0028] The implementation principle is as follows: the ore enters the discharge box 9 from the feed port, and first passes through the crushing roller 13 of the first crushing mechanism 10. The driving motor 27 drives the crushing roller 13 to rotate through the transmission mechanism. The crushing teeth 14 on the crushing roller 13 hit and crush the ore, and preliminarily crush the large particles into smaller particles. The ore after preliminarily crushing falls onto the screen plate 11. The ore that meets the particle size requirements passes through the screen plate 11 and enters the bottom. The larger particles of ore remain on the screen plate 11. The first hydraulic telescopic rod 17 drives the extrusion plate 15 to slide relatively, and squeezes and crushes the large particles of ore on the screen plate 11. The grinding teeth 16 on the extrusion plate 15 further crush the ore so that its particle size meets the requirements and passes through the screen plate 11. The ore that has been double crushed has a more uniform particle size, which is beneficial to the subsequent drying process.

[0029] Reference Figure 5 、 Figure 6 An embodiment shown is as follows: a discharge channel 18 is provided at the bottom of the discharge box 9, and a rotatable rotary auger 19 is provided in the discharge channel 18. When the drive motor 27 is working, its output end directly drives the rotary auger 19 to rotate, and the rotary auger 19 rotates in the discharge channel 18 to generate forward thrust, pushing the crushed and screened mineral materials out of the discharge box 9 in an orderly manner and into the drying trough 3. By controlling the rotation speed of the rotary auger 19, the discharge speed can be adjusted to match the requirements of the drying process.

[0030] Reference Figure 3 、 Figure 6An embodiment shown is as follows: a spreading mechanism 20 is provided on the walking assembly 5 for spreading the mineral material in the drying trough 3, and the spreading mechanism 20 includes a flipping plate 21 which can move up and down, and a plurality of through holes are provided on the flipping plate 21 to facilitate the circulation of the material. By moving the flipping plate 21 in the drying trough 3, the material can be flipped so that it is evenly heated, and the flipping plate 21 is slidably connected to the walking assembly 5, and a second hydraulic telescopic rod 22 in the up and down direction is fixedly connected to the walking assembly 5, and the bottom of the second hydraulic telescopic rod 22 is fixedly connected to the flipping plate 21, and the second hydraulic telescopic rod 22 is located on one side of the mounting seat, and a guide rod is provided on the other side of the mounting seat for smooth sliding of the flipping plate 21 in the up and down direction. A connecting rod 23 is hingedly connected to the fixed seat 7. The fixing seat 7 is slidably connected with a leveling plate 24 that can move up and down. The leveling plate 24 and the flipping plate 21 have respective limit slots 25 at the opposite ends, and the connecting rod 23 is located between the two. The two ends of the connecting rod 23 are respectively inserted into the limit slots 25 on the corresponding sides. The top of the leveling plate 24 is fixedly connected with a fixed compression spring 26, and the top of the fixed compression spring 26 is fixed to the fixing seat 7. In this embodiment, the leveling plate 24 and the flipping plate 21 are respectively located at the two ends of the connecting rod 23, and the hinge center of the connecting rod 23 is located in the middle position of the connecting rod 23. When the flipping plate 21 moves, the leveling plate 24 moves in the opposite direction. By adjusting the height of the flipping plate 21, the leveling plate 24 can be adjusted at the same time, and the paving thickness can also be adjusted at this time.

[0031] Implementation principle: When the feeding device 4 moves to feed, the paving mechanism 20 starts to work, and the second hydraulic telescopic rod 22 controls the flipping plate 21 to move up and down to flip the mineral material. At the same time, under the action of the fixed compression spring 26, the height of the flattening plate 24 can be adjusted synchronously by adjusting the height of the flipping plate 21, thereby adjusting the paving thickness.

[0032] Reference Figures 1 to 5 An embodiment shown is as follows: a drive motor 27 is fixedly connected to the discharge box 9, an output end of the drive motor 27 is fixedly connected to a rotating hinge dragon, an active friction wheel 28 is fixedly connected to the output end of the drive motor 27, a rotatable driven shaft 29 is rotatably connected to the discharge box 9, a driven friction wheel 30 that is transmission-connected to the active friction wheel 28 is fixedly connected to the driven shaft 29, a driving pulley 31 is fixedly connected to the driven shaft 29, and a driven pulley 32 that can be transmission-connected to the driving pulley 31 is fixedly connected to the crushing roller 13;

[0033] Implementation principle: The driving motor 27 drives the active friction wheel 28 to rotate, and the active friction wheel 28 drives the driven friction wheel 30 to rotate through friction force. The active pulley 31 on the driven shaft 29 where the driven friction wheel 30 is located drives the driven pulley 32 on the crushing roller 13 to rotate through belt transmission. At the same time, the output end of the driving motor 27 is directly fixedly connected to the rotating auger 19 to realize the rotation of the rotating auger 19, thereby discharging the crushed and screened mineral materials into the drying trough 3 in an orderly manner.

[0034] The working principle of the present invention has been explained through the above embodiments. The above embodiments only express several implementation methods of the present invention. The description is relatively specific and detailed, but it should not be understood as limiting the scope of the invention patent. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the present invention shall be based on the appended claims.

Claims

1. A rotary kiln drying device, comprising a fixed frame (1), characterized in that: A rotary kiln (2) is mounted and fixed on the fixed frame (1), a drying trough (3) located above the rotary kiln (2) is provided on the top of the fixed frame (1), a feeding device (4) capable of feeding materials into the drying trough (3) is provided on the drying trough (3), a walking assembly (5) is provided at the bottom of the feeding device (4), the walking assembly (5) comprises a rotatable walking wheel (6) and a fixed seat (7), the fixed seat (7) is slidably connected to the top of the drying trough (3), and guide platforms (8) are provided on both sides of the drying trough (3). The traveling wheel (6) is rotatably connected to the fixed seat (7) and can travel along the guide platform (8) on the corresponding side thereof. The feeding device (4) includes a discharge box (9), which is fixed to the traveling assembly (5). A feed port is provided on the top of the discharge box (9). A first crushing mechanism (10) for crushing mineral materials is provided in the discharge box. A screen plate (11) is provided below the first crushing mechanism (10). A second crushing mechanism (12) located above the screen plate (11) is provided in the discharge box (9).

2. The rotary kiln drying device according to claim 1, characterized in that: The first crushing mechanism (10) comprises a crushing roller (13), the crushing roller (13) being rotatably connected in the discharge box (9) and having a plurality of crushing teeth (14) arranged on its circumference.

3. The rotary kiln drying device according to claim 1, characterized in that: The second crushing mechanism (12) includes extrusion plates (15) arranged on both sides of the discharge box (9), and a plurality of grinding teeth (16) are provided on the extrusion plates (15). The two extrusion plates (15) can slide relative to each other. A first hydraulic telescopic rod (17) is respectively provided on both sides of the discharge box (9) to drive the extrusion plates (15) on the corresponding sides to slide. The first hydraulic telescopic rod (17) is fixed on the discharge box (9).

4. The rotary kiln drying device according to claim 1, characterized in that: A discharge channel (18) is provided at the bottom of the discharge box (9), and a rotatable rotary auger (19) is provided in the discharge channel (18).

5. The rotary kiln drying device according to claim 1, characterized in that: The walking assembly (5) is provided with a spreading mechanism (20) capable of spreading the mineral material in the drying trough (3), the spreading mechanism (20) includes a flipping plate (21) that can move up and down, the flipping plate (21) is slidably connected to the walking assembly (5), the walking assembly (5) is provided with a second hydraulic telescopic rod (22), the bottom of the second hydraulic telescopic rod (22) is fixedly connected to the flipping plate (21), the fixed seat (7) is hingedly connected with a connecting rod (23), the fixed seat (7) is provided with a flattening plate (24), the opposite ends of the flattening plate (24) and the flipping plate (21) are respectively provided with a limiting groove (25) and the connecting rod (23) is located between the two, the two ends of the connecting rod (23) are respectively inserted into the limiting groove (25) on the corresponding side, the top of the flattening plate (24) is provided with a fixed compression spring (26), and the top of the fixed compression spring (26) is fixed to the fixed seat (7).

6. The rotary kiln drying device according to claim 2, characterized in that: The discharge box (9) is provided with a driving motor (27), the output end of the driving motor (27) is fixedly connected to the rotating hinge dragon, the output end of the driving motor (27) is provided with a driving friction wheel (28), the discharge box (9) is provided with a rotatable driven shaft (29), the driven shaft (29) is provided with a driven friction wheel (30) connected to the driving friction wheel (28), the driven shaft (29) is provided with a driving pulley (31), and the crushing roller (13) is provided with a driven pulley (32) that can be connected to the driving pulley (31) in a belt transmission manner.

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