A kind of integrated mixing processing equipment for magnesium carbon brick regeneration

Abstract

This utility model relates to the field of magnesia-carbon brick recycling and mixing technology, and discloses an integrated magnesia-carbon brick recycling mixing and processing equipment, including a mixing shell, which is divided into a top cone part, a straight cylinder part, and an equipment part. The straight cylinder part and the equipment part are separated by a middle partition. The top cone part is equipped with a conical partition and an air inlet duct, which, together with the air pipe and circumferential air holes, form a connected air inlet channel. At the same time, the feed pipe and exhaust pipe are integrated. The equipment part is equipped with a built-in drying and stirring mechanism, which drives the perforated diamond-shaped stirring tube to rotate through gear transmission, and is supplemented by air supply through a second air inlet pipe to complete the synchronous hot air drying and stirring of the material inside and outside. This equipment overcomes the problems of single drying point, easy material agglomeration, uneven mixing, and low efficiency of traditional equipment, and significantly improves the mixing quality and overall processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of magnesia-carbon brick recycling and mixing technology, and in particular to an integrated magnesia-carbon brick recycling and mixing equipment. Background Technology

[0002] Magnesia-carbon bricks, as a core refractory material in metallurgical kilns, can be crushed and screened after being scrapped to produce recycled raw materials. These materials can then be re-mixed, pressed, and fired to produce recycled magnesia-carbon bricks, thus realizing the resource utilization of refractory materials. The magnesia-carbon brick recycling process includes crushing, screening, batching, mixing, drying, and molding. Among these processes, the integrated drying and mixing process is a key step in ensuring the quality of the recycled finished product.

[0003] Existing integrated drying and mixing equipment mostly adopts an integrated structure, with the drying structure only arranged at the feeding end or the discharging end, which can only dry the outside of the material with hot air. However, the recycled raw materials of magnesia-carbon bricks mostly absorb moisture from kiln moisture and dust. When the material is damp, it is very easy to clump together. The single external drying mode cannot break up the clumps. At the same time, it is difficult to quickly remove the internal moisture of the material, resulting in uneven drying, difficulty in breaking up clumps, and poor mixing uniformity. This directly reduces the density and refractory performance of the subsequent molded and fired products, and the overall drying and mixing processing efficiency is low.

[0004] Therefore, it is essential to provide an integrated mixing and processing equipment for the recycling of magnesia-carbon bricks to address the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this utility model is to provide an integrated mixing and processing equipment for the recycling of magnesium carbon bricks, which avoids the shortcomings of the prior art. It solves the problems of existing integrated drying and mixing equipment that can only dry on one side, the difficulty in breaking up damp materials, the low efficiency of drying and mixing, and the uneven drying and wetting of materials. Relying on the internal and external dual-channel hot air supply structure, and with the help of irregularly shaped stirring components, it realizes the integrated operation of material mixing and breaking up and internal and external synchronous drying, thereby improving the mixing quality and processing efficiency.

[0006] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0007] An integrated mixing and processing equipment for the recycling of magnesia-carbon bricks is provided, comprising a mixing shell, which includes a top conical section, a straight cylindrical section, and an equipment section from top to bottom. The interiors of the straight cylindrical section and the equipment section are separated by horizontally arranged partitions. A conical partition is coaxially arranged inside the top conical section. The conical partition and the inner wall of the top conical section enclose an annular first air inlet channel. An air inlet duct is vertically installed between the lower end of the conical partition and the upper end of the partition. The air inlet duct has several first air inlet holes evenly opened along the circumference. The outer wall of the air inlet duct and the inner wall of the straight cylindrical section enclose a second air inlet channel. The first air inlet channel and the second air inlet channel are connected.

[0008] The top of the cone is vertically fixed and connected to the first air inlet pipe. The first air inlet pipe is set directly opposite the top of the conical partition and is connected to the first air inlet channel. An exhaust pipe and a feed pipe are installed through the inside of the conical partition. The bottom ends of the exhaust pipe and the feed pipe extend into the inside of the straight cylinder. The top ends of the exhaust pipe and the feed pipe extend into the outside of the cone. An internal drying and stirring mechanism is installed inside the equipment.

[0009] Preferably, the internal drying and stirring mechanism includes a drive motor fixedly installed inside the equipment section, a gear A fixedly installed at the output end of the drive motor, a stirring shaft tube rotatably mounted on the partition plate, the top end of the stirring shaft tube extending into the inside of the straight cylinder section, the bottom end of the stirring shaft tube extending into the inside of the equipment section and fixedly installed with a gear B, gear A and gear B meshing and driving each other, a second air inlet pipe rotatably sleeved at the bottom end of the stirring shaft tube, and several diamond-shaped stirring tubes fixedly installed on the tube body of the stirring shaft tube located inside the straight cylinder section, the diamond-shaped stirring tubes communicating with the inside of the stirring shaft tube, and several second air inlet holes opened on the tube wall of the diamond-shaped stirring tubes.

[0010] Preferably, the partition plate has an eccentrically provided discharge port, which is connected to the discharge pipe. The discharge pipe is equipped with an electrically controlled valve, which is installed inside the equipment to control the quantitative discharge of materials.

[0011] Preferably, an inclined plate that slopes towards the discharge pipe is fixedly installed between the upper surface of the partition plate and the inner wall of the air inlet duct. The inclined plate has a discharge port adapted to the discharge pipe and is connected to the discharge pipe to avoid material residue accumulation.

[0012] Preferably, ventilation and leak-proof meshes are installed on the openings of both the first and second air inlets to ensure both hot air circulation and material isolation, thereby preventing powder leakage.

[0013] This utility model features a dual-channel independent hot air supply structure. Hot air is introduced through the first air inlet pipe, and after being diverted through the first and second air inlet channels, it is delivered to the surrounding material through the first air inlet hole of the air inlet duct, completing the outer-side hot air drying of the material. Hot air is introduced into the stirring shaft tube and the diamond-shaped stirring tube through the second air inlet hole, and the hot air is dissipated from the inside of the material, realizing the internal penetration drying of the material. This internal and external synergistic drying mode quickly breaks up the damp and clump-forming material, removes moisture from the inside and outside of the material in all directions, and greatly improves the drying uniformity.

[0014] This utility model adopts a gear meshing transmission structure, which drives the motor to rotate synchronously with the stirring shaft tube and the diamond-shaped stirring tube. Compared with ordinary stirring rods, the diamond-shaped stirring structure has stronger shearing and dispersing capabilities, which can efficiently break up lumps of magnesia-carbon brick recycled powder and simultaneously complete the mixing and stirring operations. The drying, mixing and dispersing processes are integrated into one, reducing the equipment footprint and simplifying the processing procedures.

[0015] With no dead corners for material residue, controllable and convenient discharge, and dual air holes with ventilation and anti-leakage nets, the equipment can effectively prevent refractory powder from leaking out, reduce material loss, and has strong operational stability. It is suitable for drying and mixing of recycled magnesia-carbon brick powder with different particle sizes. Attached Figure Description

[0016] The present invention will be further described with reference to the accompanying drawings, but the contents of the drawings do not constitute any limitation on the present invention.

[0017] Figure 1 This is a schematic diagram of the main structure of an integrated mixing and processing equipment for the recycling of magnesium-carbon bricks according to this utility model.

[0018] Figure 2 This is a cross-sectional structural schematic diagram of an integrated mixing and processing equipment for the recycling of magnesium-carbon bricks according to this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the partition plate of a magnesium-carbon brick recycling integrated mixing and processing equipment according to this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the installation of the mixing shaft tube and the diamond-shaped mixing tube of the integrated mixing and processing equipment for the recycling of magnesium carbon bricks according to this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the air inlet duct of an integrated mixing and processing equipment for the recycling of magnesium-carbon bricks according to this utility model.

[0022] from Figures 1 to 5 Including: 1. Mixing shell; 2. Top conical part; 3. Straight section; 4. Equipment Department; 5. Middle partition; 6. Conical partition; 7. First air intake duct; 8. Air inlet duct; 9. First air inlet; 10. Second air intake duct; 11. First air inlet duct; 12. Exhaust pipe; 13. Feed pipe; 14. Drive motor; 15. Gear A; 16. Stirring shaft tube; 17. Gear B; 18. Second air inlet duct; 19. Rhomboid stirring tube; 20. Second air inlet; 21. Discharge pipe; 22. Inclined plate; 23. Ventilation and leak-proof mesh; 24. Electrically controlled valve. Detailed Implementation

[0023] The present invention will be further described in conjunction with the following embodiments.

[0024] Example 1.

[0025] like Figure 1-5 As shown, a magnesia-carbon brick recycling integrated mixing and processing equipment includes a mixing shell 1. The mixing shell 1 includes a top cone section 2, a straight cylinder section 3, and an equipment section 4 from top to bottom. The interiors of the straight cylinder section 3 and the equipment section 4 are separated by horizontally arranged partition plates 5. The partition plates 5 bear the functions of material bearing and separating the installation of mixing components. A conical partition plate 6 is coaxially arranged inside the top cone section 2. The conical partition plate 6 and the inner wall of the top cone section 2 form an annular first air inlet channel 7, and hot air can be evenly distributed along the annular channel.

[0026] An air inlet duct 8 is vertically installed between the lower end of the conical partition 6 and the upper end of the middle partition 5. Several first air inlet holes 9 are evenly opened in the circumferential direction of the air inlet duct 8. The outer wall of the air inlet duct 8 and the inner wall of the straight cylinder 3 form an annular second air inlet channel 10. The first air inlet channel 7 and the second air inlet channel 10 are connected, and hot air can be diverted and transferred from top to bottom.

[0027] The top of the cone 2 is vertically fixed and connected to the first air inlet pipe 11. The first air inlet pipe 11 is connected to a hot air heating unit. The first air inlet pipe 11 is set directly opposite the top of the conical partition 6 and is connected to the first air inlet channel 7. The exhaust pipe 12 and the feed pipe 13 are vertically installed inside the conical partition 6. The feed pipe 13 is connected to the feeding mechanism of the crushed and screened magnesium carbon brick recycled raw material. The exhaust pipe 12 is connected to the exhaust gas dust removal mechanism to discharge the water vapor and dust generated during material drying. The bottom ends of the exhaust pipe 12 and the feed pipe 13 extend into the inside of the straight cylinder 3, and the top ends of the exhaust pipe and the feed pipe extend to the outside of the cone 2.

[0028] An internal drying and stirring mechanism is fixedly installed inside the equipment section 4. The internal drying and stirring mechanism includes a drive motor 14 installed on the bottom wall of the inner cavity of the equipment section 4. The output end of the drive motor 14 is keyed to a fixed gear A15. A stirring shaft tube 16 is rotatably installed at the center of the partition plate 5 through a sealed bearing. The stirring shaft tube 16 is a hollow tubular structure. The top end of the stirring shaft tube 16 extends into the inside of the straight cylinder section 3, and the bottom end of the stirring shaft tube 16 extends into the inner cavity of the equipment section 4 and is keyed to a fixed gear B17. The gear A15 and the gear B17 mesh and transmit power in a reverse direction.

[0029] The bottom end of the stirring shaft tube 16 is rotatably connected to the second air inlet tube 18 through a rotary sealing joint. The second air inlet tube 18 is independently connected to another set of hot air heating units, which do not interfere with the external hot air supply. Six sets of rhomboid stirring tubes 19 are welded and fixed around the tube body of the stirring shaft tube 16 inside the straight cylinder 3. The interior of the rhomboid stirring tube 19 is connected to the hollow cavity of the stirring shaft tube 16. The side wall of the rhomboid stirring tube 19 is evenly opened with second air inlet holes 20. The irregular rhomboid structure can improve the powder shearing and dispersing effect.

[0030] The partition plate 5 has an eccentrically positioned discharge port, the bottom of which is sealed and connected to the discharge pipe 21. An electric control valve 24 is connected in series with the body of the discharge pipe 21. The electric control valve 24 is electrically connected to the main control panel of the equipment and can open and close the discharge in a timed and quantitative manner. An inclined plate 22 is fixedly installed between the upper surface of the partition plate 5 and the inner wall of the air inlet duct 8. The inclined plate 22 is inclined towards the discharge pipe 21. An discharge port adapted to the discharge pipe 21 is opened on the inclined plate 22 and connected to the discharge pipe 21 to realize the self-flow and guidance of materials and prevent the accumulation and residue of powder.

[0031] Both the first air inlet 9 and the second air inlet 20 are equipped with ventilation and anti-leakage mesh 23. The mesh size of the ventilation and anti-leakage mesh 23 is smaller than the particle size of the recycled magnesium carbon brick powder, which ensures the permeable flow of hot air while preventing the powder from leaking out of the air hole and reducing raw material loss.

[0032] The working principle of this utility model is that the crushed and screened magnesia-carbon brick recycled powder is fed into the drying and mixing chamber above the middle partition plate 5 in the inner cavity of the straight cylinder 3 through the feed pipe 13 to complete the raw material loading.

[0033] Constant-temperature hot air is introduced into the first air inlet pipe 11. The hot air is then diverted in a ring along the first air inlet channel 7 and enters the second air inlet channel 10. It is then sprayed out through the first air inlet hole 9 on the side wall of the air inlet duct 8, and is used to dry the material in all directions. At the same time, independent constant-temperature hot air is introduced into the second air inlet pipe 18. The hot air enters the interior of the stirring shaft tube 16 and is diverted to each group of diamond-shaped stirring tubes 19. It then penetrates and disperses from the inside of the material through the second air inlet hole 20, achieving simultaneous drying of the material inside and out. The water vapor mixed with dust generated during drying is uniformly discharged to the outside through the exhaust pipe 12.

[0034] Start the drive motor 14, which drives the gear A15 to rotate. The meshing linkage gear B17 and the stirring shaft tube 16 rotate synchronously. The stirring shaft tube 16 drives the rhomboid stirring tube 19 to rotate circumferentially. The rhomboid structure is used to shear and turn the damp and clump-forming powder, break up the clumps, and simultaneously complete the mixing of multiple powder components.

[0035] After the drying and mixing meet the standards, the main control panel opens the electric control valve 24. The powder above the partition plate 5 is guided by the inclined plate 22 and falls into the discharge pipe 21 along the discharge port, completing the discharge and collection of finished materials, and the single process is completed in a closed loop.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An integrated mixing and processing equipment for the recycling of magnesia-carbon bricks, characterized in that: The device includes a mixing shell, which comprises a top conical section, a straight cylindrical section, and an equipment section from top to bottom. The interiors of the straight cylindrical section and the equipment section are separated by a horizontally arranged partition. A conical partition is coaxially arranged inside the top conical section. The conical partition and the inner wall of the top conical section together form an annular first air inlet channel. An air inlet duct is vertically installed between the lower end of the conical partition and the upper end of the partition. The air inlet duct has several first air inlet holes evenly opened in the circumferential direction. The air inlet duct and the inner wall of the straight cylindrical section together form a second air inlet channel. The first air inlet channel and the second air inlet channel are connected. The top of the cone portion is vertically fixedly connected to the first air inlet pipe. The first air inlet pipe is positioned opposite the top of the cone-shaped partition and is connected to the first air inlet channel. An exhaust pipe and a feed pipe are installed through the interior of the cone-shaped partition. The bottom of the exhaust pipe and the feed pipe extend into the interior of the straight cylinder portion, and the top of the exhaust pipe and the feed pipe extend into the exterior of the cone portion. An internal drying and stirring mechanism is installed inside the equipment portion.

2. The integrated mixing and processing equipment for the recycling of magnesia-carbon bricks according to claim 1, characterized in that: The internal drying and stirring mechanism includes a drive motor installed inside the equipment section. Gear A is fixedly installed at the output end of the drive motor. A stirring shaft tube is rotatably installed on the partition plate. The top of the stirring shaft tube extends into the interior of the straight cylinder section, and the bottom of the stirring shaft tube extends into the interior of the equipment section and is fixedly installed with gear B. Gear A and gear B mesh with each other. A second air inlet pipe is rotatably sleeved at the bottom of the stirring shaft tube. Several diamond-shaped stirring tubes are fixedly installed on the tube body of the stirring shaft tube located inside the straight cylinder section. The diamond-shaped stirring tubes are connected to the stirring shaft tube, and several second air inlet holes are opened on the diamond-shaped stirring tubes.

3. The integrated mixing and processing equipment for the recycling of magnesia-carbon bricks according to claim 2, characterized in that: The partition plate has an eccentrically oriented discharge port that is connected to the discharge pipe. The discharge pipe is equipped with an electrically controlled valve, which is installed in the equipment section. An inclined plate that slopes towards the discharge pipe is fixedly installed between the upper surface of the partition plate and the inner wall of the air inlet. The inclined plate has a discharge port that is adapted to the discharge pipe and is connected to the discharge pipe.

4. The integrated mixing and processing equipment for the recycling of magnesia-carbon bricks according to claim 3, characterized in that: Both the first and second air inlets are equipped with ventilation and leak-proof mesh.

Images