A rotary kiln drying and cooling integrated machine

Abstract

The application relates to the technical field of material drying equipment, and discloses a rotary kiln drying and cooling integrated machine, which comprises a drying kiln body, a cooling kiln body arranged on one side of the drying kiln body, a kiln head arranged on one side of the drying kiln body, a material conveying cylinder arranged on one side of the kiln head, a plurality of scoops arranged in the drying kiln body and the cooling kiln body, an adaptive mounting mechanism comprising an adjusting cavity arranged in the bottom of the scoops and a second scoop arranged in the bottom of the scoops, and an adjusting plate fixedly arranged on the top of the second scoop. According to the adaptive mounting mechanism, the throwing angle of the second scoop can be self-adaptively adjusted according to the particle size, viscosity and other characteristics of the material. When facing different types of materials, the second scoop always maintains an adaptive throwing posture, which can ensure that the material is uniformly thrown to fully contact hot air or cold air, improve the drying and cooling efficiency and uniformity, guarantee the continuous and stable operation of the equipment, and improve the overall production efficiency.

Description

Technical Field

[0001] This invention relates to the field of material drying equipment technology, specifically a rotary kiln drying and cooling integrated machine. Background Technology

[0002] Rotary kiln drying and cooling integrated machines are key equipment in the field of material handling and are widely used in industries such as metallurgy, chemical industry, and building materials. Their core function is to drive the material movement through the rotation of the kiln body, so as to achieve full contact with hot and cold media and complete the integrated drying and cooling process.

[0003] However, existing rotary kiln drying and cooling integrated machines cannot adjust the throwing angle during actual use. When dealing with granular, powdery, or lumpy materials of different sizes and viscosities, material accumulation and uneven throwing are likely to occur, resulting in poor drying and cooling uniformity. Wet materials are also prone to clumping and adhesion, further affecting the processing effect. Moreover, the lifting plates are mostly fixed by welding, which is cumbersome to disassemble and assemble. When the lifting plates are worn or need to be replaced with different types of lifting plates to adapt to different materials, the operation is complicated and time-consuming, and the equipment's flexible production capacity is insufficient. In addition, traditional equipment mostly adopts an integral or simple segmented welded structure, which not only makes transportation and on-site installation difficult, but also requires the entire machine to be shut down and disassembled for subsequent maintenance. Especially when the refractory material of a local kiln section is worn or the kiln body is damaged, the maintenance cycle is long and the cost is high, which seriously affects the continuity of production, reduces heat exchange efficiency and material processing quality. Summary of the Invention

[0004] The purpose of this invention is to provide a rotary kiln drying and cooling integrated machine, which solves the problems in the prior art where the spraying angle cannot be adjusted, and when dealing with granular materials, powders, or lumps of different particle sizes and viscosities, material accumulation and uneven spraying are likely to occur, resulting in poor drying and cooling uniformity. This not only makes transportation and on-site installation difficult, but also leads to long maintenance cycles and high costs, seriously affecting production continuity and reducing heat exchange efficiency and material processing quality.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A rotary kiln drying and cooling integrated machine, comprising:

[0007] A drying kiln body, a cooling kiln body is provided on one side of the drying kiln body, a kiln head is provided on one side of the drying kiln body, a conveying cylinder is provided on one side of the kiln head, and a kiln tail is provided on one side of the cooling kiln body. Multiple lifting plates are provided inside both the drying kiln body and the cooling kiln body.

[0008] An adaptive installation mechanism is provided, located at the bottom of the first lifting plate and used to adapt and scatter materials. The adaptive installation mechanism includes an adjustment cavity at the bottom of the first lifting plate and a second lifting plate at the bottom of the first lifting plate. An adjustment plate is fixedly installed on the top of the second lifting plate and is hinged inside the adjustment cavity. An elastic component is provided inside the adjustment cavity for adjusting the angle of the adjustment plate and the second lifting plate.

[0009] Preferably, the elastic component includes multiple elastic elements disposed on both sides of the adjusting plate, all of which are located inside the adjusting cavity, and the outer wall of the first adjusting plate is provided with a disassembly and assembly assembly.

[0010] Preferably, the disassembly and assembly assembly is used to disassemble and assemble the plurality of lifting plates from the inner wall of the drying kiln. The disassembly and assembly assembly includes a plurality of fixed plates fixedly installed on the inner wall of the drying kiln and a side plate disposed on one side of the plurality of fixed plates. The lifting plate is located between two of the fixed plates, and the two side plates are attached to the two sides of the lifting plate. A fixing component is disposed on one side of the fixed plate.

[0011] Preferably, the fixing component includes a slot formed on one side of the fixing plate and the side plate, and two fixing inserts set on one side of the fixing plate. Two fixing bolts are provided on one side of each of the two fixing inserts, and multiple fixing slots are formed on both sides of the first lifting plate.

[0012] Preferably, one end of each of the two fixing plates passes through a slot and is located inside the fixing slot. The two fixing plates are fixed to the fixing plate by multiple fixing bolts. A stabilizing mechanism is provided between the drying kiln body and the cooling kiln body.

[0013] Preferably, the inside of the conveying cylinder is provided with an auger, the inside of the kiln tail is provided with a diversion component, and an air inlet is provided on one side of the kiln tail.

[0014] Preferably, the diversion component includes an air distribution plate disposed inside the kiln tail and a discharge hopper disposed at the bottom of the kiln tail, and the drying kiln body, cooling kiln body and kiln tail are provided with core tubes inside.

[0015] Preferably, the bottom of the drying kiln and the cooling kiln are provided with a support plate, two auxiliary plates are fixedly installed on the bottom of the support plate, and multiple support seats are provided on the top of the support plate. The drying kiln and the cooling kiln are arranged above the multiple support seats.

[0016] Preferably, the stabilizing mechanism is used to securely connect and disconnect the drying kiln body and the cooling kiln body. The stabilizing mechanism includes two mounting flanges disposed on opposite sides of the drying kiln body and the cooling kiln body. One of the mounting flanges has multiple guide grooves, and the other mounting flange has multiple guide rods fixedly installed on one side. The multiple guide rods are all located inside the multiple guide grooves. Stabilizing components are provided on both sides of the outer wall of the two mounting flanges. The stabilizing components are used to stabilize the two mounting flanges.

[0017] Preferably, the stabilizing component includes fixing plates fixedly installed on both sides of the outer walls of the two mounting flanges and a screw rod screwed between the two fixing plates. A fixing handle is fixedly installed on one side of the screw rod, and the fixing handle is located on one side of one of the mounting flanges. The outer walls of the drying kiln and the cooling kiln are provided with fixing sleeves. Multiple ultrasonic vibrators are provided on the outer walls of the two fixing sleeves. A fixing member is provided on one side of each of the multiple ultrasonic vibrators. The multiple ultrasonic vibrators are fixed to the fixing sleeves by the fixing member.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0019] 1. This invention, through the adaptation of the installation mechanism, can adaptively adjust the throwing angle of the second lifting plate according to the particle size, viscosity, and other characteristics of the material. When facing different types of materials, the elastic element can buffer the impact of the material through its own deformation, so that the second lifting plate always maintains a suitable throwing posture. This ensures that the material is evenly thrown to fully contact the hot or cold air, improving the drying and cooling efficiency and uniformity. It also avoids the problem of material accumulation or over-throwing caused by the single adaptability of the fixed lifting plate, reducing the phenomenon of agglomeration. At the same time, it enables quick disassembly and individual replacement of the lifting plates without the need for overall shutdown and disassembly of the kiln body. This not only reduces the maintenance and replacement costs and operational difficulty of worn lifting plates, but also allows for flexible replacement of lifting plates with different structures according to the material characteristics, ensuring continuous and stable operation of the equipment and improving overall production efficiency and flexible production capabilities.

[0020] 2. This invention, through the establishment of a stabilizing mechanism, enables rapid and precise positioning and docking of two kiln sections, preventing misalignment during installation. It achieves a tight fit and secure locking of the two kiln sections, significantly improving connection stability and sealing. This effectively prevents loosening, air leakage, and material leakage at the connection points due to vibration during kiln operation. Furthermore, the modular design facilitates equipment transportation, installation, maintenance, and repair. It also allows for flexible adjustment of the combination of drying and cooling sections to meet the structural requirements of different materials. In addition, it ensures long-term stable operation, reduces downtime due to malfunctions, and improves overall production efficiency and equipment lifespan. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the wind distribution plate of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the support plate of the present invention;

[0025] Figure 5 This is a schematic diagram of the installation mechanism adapted to the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the elastic component of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the fixing component of the present invention;

[0028] Figure 8 This is a schematic diagram of the stabilizing mechanism of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the stabilizing mechanism of the present invention during disassembly;

[0030] Figure 10 This is a schematic diagram of the core tube structure of the present invention.

[0031] The components are as follows: 1. Drying kiln body; 2. Cooling kiln body; 3. Feeding cylinder; 4. Kiln tail; 5. Bearing plate; 6. Auxiliary plate; 7. Bearing seat; 8. Mounting flange; 9. Fixing sleeve; 10. Screwdriver; 11. Lifting plate one; 12. Lifting plate two; 13. Fixing plate; 14. Adjusting plate; 15. Adjusting cavity; 16. Elastic element; 17. Slot; 18. Side plate; 19. Fixing insert plate; 20. Fixing bolt; 21. Guide slot; 22. Kiln head; 23. Air distribution plate; 24. Discharge hopper; 25. Air inlet; 26. Core tube; 27. Fixing clamping plate; 28. Screw; 29. ​​Fixing handle; 30. Guide clamping rod. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please refer to Figure 1 and Figure 2A rotary kiln drying and cooling integrated machine includes: a drying kiln body 1, a cooling kiln body 2 provided on one side of the drying kiln body 1, a kiln head 22 provided on one side of the drying kiln body 1, a material conveying cylinder 3 provided on one side of the kiln head 22, a kiln tail 4 provided on one side of the cooling kiln body 2, and multiple lifting plates 11 provided inside both the drying kiln body 1 and the cooling kiln body 2.

[0034] Please refer to Figure 5 - Figure 7 The adaptive installation mechanism is located at the bottom of the lifting plate 11 and is used to adapt and scatter materials. The adaptive installation mechanism includes an adjustment cavity 15 at the bottom of the lifting plate 11 and a second lifting plate 12 at the bottom of the lifting plate 11. An adjustment plate 14 is fixedly installed on the top of the second lifting plate 12 and is hinged inside the adjustment cavity 15. The adjustment cavity 15 contains an elastic component for adjusting the angle of the adjustment plate 14 and the second lifting plate 12. The elastic component includes components disposed on the adjustment plate... Multiple elastic elements 16 on both sides of 14 are located inside the adjustment cavity 15. The outer wall of the lifting plate 11 is provided with a disassembly assembly. The disassembly assembly is used to disassemble and assemble the multiple lifting plates 11 with the inner wall of the drying kiln body 1. The disassembly assembly includes multiple fixing plates 13 fixedly installed on the inner wall of the drying kiln body 1 and side plates 18 provided on one side of the multiple fixing plates 13. The lifting plate 11 is located between two fixing plates 13. The two side plates 18 are attached to both sides of the lifting plate 11. A fixing assembly is provided on one side of the fixing plate 13.

[0035] In use, the drying kiln 1 and cooling kiln 2 are first connected and fixed using a stabilizing mechanism to ensure that the material can smoothly enter the cooling kiln 2 from the drying kiln 1. The kiln head 22 on one side of the conveying cylinder 3 is used to receive the material to be processed. After the material enters the drying kiln 1 through the conveying cylinder 3, as the drying kiln 1 and cooling kiln 2 rotate synchronously, multiple lifting plates 11 inside rotate accordingly, causing the material to tumble and scatter. The adaptive installation mechanism at the bottom of the lifting plates 11 begins to function. When the lifting plates 12 come into contact with materials of different particle sizes and viscosities, they will hinge and rotate within the adjustment cavity 15 via the top adjustment plate 14. Multiple elastic elements 16 in the elastic assembly within the adjustment cavity 15 will adjust according to the material's particle size and viscosity. The material deformation is caused by the impact force of the material, and the throwing angle of the second lifting plate 12 is adaptively adjusted to ensure that the material is always evenly thrown to fully contact the hot or cold air. When it is necessary to replace the first lifting plate 11 to adapt to different materials or to replace the worn lifting plate 11, the disassembly and assembly components on the outer wall of the first lifting plate 11 can be used. First, disassemble the fixing component on one side of the fixing plate 13, and then take the first lifting plate 11 out between the two fixing plates 13. After the replacement is completed, place the new first lifting plate 11 between the two fixing plates 13 so that the two side plates 18 are in contact with the two sides of the first lifting plate 11. Fix the first lifting plate 11 to the fixing plate 13 with the fixing component to complete the disassembly and assembly, and ensure the continuous and stable operation of the equipment.

[0036] Furthermore, such as Figure 5 - Figure 7 As shown, the fixing assembly includes a slot 17 formed on one side of the fixing plate 13 and the side plate 18, and two fixing plates 19 set on one side of the fixing plate 13. Two fixing bolts 20 are provided on one side of each of the two fixing plates 19. Multiple fixing slots are formed on both sides of the lifting plate 11. One end of each of the two fixing plates 19 passes through the slot 17 and is located inside the fixing slot. The two fixing plates 19 are fixed to the fixing plate 13 by multiple fixing bolts 20. A stabilizing mechanism is provided between the drying kiln body 1 and the cooling kiln body 2. Therefore, when fixing, installing, disassembling, or replacing the lifting plate 11, the lifting plate 11 is first placed between the two fixing plates 13 on the inner wall of the drying kiln body 1. The two side plates 18 are tightly fitted to the two sides of the lifting plate 11, ensuring that the slots 17 on one side of the fixing plate 13 and the side plates 18 are aligned with the fixing slots on both sides of the lifting plate 11. Then, the two fixing plates 19 are taken out, one end of which is inserted through the slot 17 and into the corresponding fixing slot of the lifting plate 11. Then, multiple fixing bolts 20 on one side of the fixing plate 19 are passed through the fixing plate 19 and screwed to the fixing plate 13 to complete the installation and fixing of the lifting plate 11, ensuring its stability when rotating with the kiln body. When it is necessary to disassemble the lifting plate 11, the fixing bolts 20 are loosened and removed in the opposite direction, and the fixing plate 19 is pulled out to remove the lifting plate 11 from between the two fixing plates 13.

[0037] Furthermore, such as Figure 1 , Figure 2 , Figure 3 and Figure 10 As shown, the feed cylinder 3 is equipped with an auger 10, the kiln tail 4 is equipped with a flow diversion assembly, and an air inlet 25 is provided on one side of the kiln tail 4. The flow diversion assembly includes an air distribution plate 23 installed inside the kiln tail 4 and a discharge hopper 24 installed at the bottom of the kiln tail 4. Core tubes 26 are installed inside the drying kiln body 1, the cooling kiln body 2, and the kiln tail 4. Based on this, during the material conveying stage, the auger 10 inside the feed cylinder 3 is activated to smoothly and evenly convey the material to be processed from the kiln head 22 into the drying kiln body 1, avoiding material accumulation and blockage during the conveying process, ensuring continuous feeding, and the heated material... Air enters the drying kiln body 1 at one-third of its depth through the core tube 26 at the kiln tail 4. The core tube 26 is insulated with aluminum silicate to prevent heat loss. After the material has completed drying and cooling, it enters the kiln tail 4 from the cooling kiln body 2. At this time, the cooling medium is introduced through the air inlet 25 on one side of the kiln tail 4. After entering, the cooling medium cooperates with the flow distribution component inside the kiln tail 4. Through the flow distribution and guidance of the air distribution plate 23, the cooling medium is evenly diffused, allowing the material to fully contact the cooling medium and ensuring that the material cooling effect is uniform. Finally, the material that has completed cooling and flow distribution is discharged from the discharge hopper 24 at the bottom of the kiln tail 4.

[0038] Furthermore, such as Figure 4As shown, a support plate 5 is provided at the bottom of the drying kiln 1 and the cooling kiln 2. Two auxiliary plates 6 are fixedly installed at the bottom of the support plate 5, and multiple support seats 7 are provided at the top of the support plate 5. The drying kiln 1 and the cooling kiln 2 are positioned above the multiple support seats 7. Based on this, when installing the equipment, the two auxiliary plates 6 are first fixed in the designated installation positions to ensure that the installation surface is flat and stable. Then, the support plate 5 is fixedly installed on top of the two auxiliary plates 6, using the auxiliary plates 6 to increase the installation height and support stability of the support plate 5. Subsequently, multiple support seats 7 are evenly arranged and fixed at the corresponding positions on the top of the support plate 5 to ensure that the installation position of the support seats 7 is compatible with the bottom support requirements of the drying kiln 1 and the cooling kiln 2.

[0039] Please also refer to... Figure 8 and Figure 9The stabilizing mechanism is used to secure the drying kiln body 1 and the cooling kiln body 2 during disassembly and assembly. The stabilizing mechanism includes two mounting flanges 8 located on opposite sides of the drying kiln body 1 and the cooling kiln body 2. One mounting flange 8 has multiple guide grooves 21, and the other mounting flange 8 has multiple guide rods 30 fixedly mounted on one side. All guide rods 30 are located inside the guide grooves 21. Stabilizing components are provided on both sides of the outer walls of the two mounting flanges 8. These stabilizing components are used to stabilize the two mounting flanges 8. The stabilizing components include components fixedly mounted on the two mounting flanges. 8. Fixed plates 27 on both sides of the outer wall and screw rods 28 screwed between the two fixed plates 27. A fixed handle 29 is fixedly installed on one side of the screw rod 28. The fixed handle 29 is located on one side of one of the mounting flanges 8. Fixed sleeves 9 are provided on the outer walls of both drying kiln 1 and cooling kiln 2. Multiple ultrasonic vibrators are provided on the outer walls of both fixed sleeves 9. A fixing component is provided on one side of each ultrasonic vibrator. The multiple ultrasonic vibrators are fixed to the fixed sleeves 9 through the fixing component. Based on this, when installing the drying kiln 1 and cooling kiln 2, first connect the two... The mounting flanges 8 are respectively attached to the opposite sides of the drying kiln 1 and the cooling kiln 2. Multiple guide rods 30 on one mounting flange 8 are aligned with multiple guide slots 21 on the other mounting flange 8 and inserted to quickly and accurately position the two kiln sections, preventing misalignment during connection. Then, the stabilizing components on both sides of the outer walls of the two mounting flanges 8 are operated. Rotating the fixed handle 29 drives the lead screw 28 to rotate. Because the lead screw 28 is screwed to two fixed plates 27, the rotation of the lead screw 28 drives the two fixed plates 27 closer together, thereby moving the two mounting flanges... 8. The two kiln sections are tightly fitted together to ensure a secure lock. At the same time, the outer walls of the drying kiln 1 and the cooling kiln 2 are both fixed with fixing sleeves 9 by fasteners. Multiple ultrasonic vibrators are fixed to the fixing sleeves 9 by fasteners. When the equipment is running, the ultrasonic vibrators can generate high-frequency vibrations, which are transmitted to the inner wall of the kiln to prevent materials from sticking to the wall and ensure the cleanliness of the kiln interior and the efficiency of material processing. When it is necessary to separate the two kiln sections, the fixing handle 29 is rotated in the opposite direction to make the screw 28 drive the fixing plate 27 to separate. Then, the guide rod 30 can be pulled out to complete the separation, which is convenient for equipment maintenance and transportation.

[0040] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln drying and cooling integrated machine, characterized in that, include: A drying kiln body (1) is provided with a cooling kiln body (2) on one side of the drying kiln body (1), a kiln head (22) is provided on one side of the drying kiln body (1), a conveying cylinder (3) is provided on one side of the kiln head (22), and a kiln tail (4) is provided on one side of the cooling kiln body (2). Multiple lifting plates (11) are provided inside both the drying kiln body (1) and the cooling kiln body (2). An adaptive installation mechanism is located at the bottom of the first lifting plate (11) and is used to adapt and scatter materials. The adaptive installation mechanism includes an adjustment cavity (15) opened at the bottom of the first lifting plate (11) and a second lifting plate (12) set at the bottom of the first lifting plate (11). An adjustment plate (14) is fixedly installed on the top of the second lifting plate (12). The adjustment plate (14) is hinged inside the adjustment cavity (15). An elastic component for angle adaptation of the adjustment plate (14) and the second lifting plate (12) is provided inside the adjustment cavity (15). The elastic component includes multiple elastic elements (16) disposed on both sides of the adjustment plate (14), and the multiple elastic elements (16) are all located inside the adjustment cavity (15). The outer wall of the lifting plate (11) is provided with a disassembly and assembly assembly. The disassembly assembly is used to disassemble and assemble multiple lifting plates (11) with the inner wall of the drying kiln body (1). The disassembly assembly includes multiple fixing plates (13) fixedly installed on the inner wall of the drying kiln body (1) and side plates (18) provided on one side of the multiple fixing plates (13). The lifting plate (11) is located between two fixing plates (13). The two side plates (18) are attached to both sides of the lifting plate (11). A fixing component is provided on one side of the fixing plate (13). The fixing assembly includes a slot (17) opened on one side of the fixing plate (13) and the side plate (18) and two fixing plates (19) set on one side of the fixing plate (13). Two fixing bolts (20) are provided on one side of each of the two fixing plates (19). Multiple fixing slots are opened on both sides of the first plate (11). One end of each of the two fixed insert plates (19) passes through the slot (17) and is located inside the fixed slot. The two fixed insert plates (19) are fixed to the fixed plate (13) by multiple fixed bolts (20). A stabilizing mechanism is provided between the drying kiln body (1) and the cooling kiln body (2).

2. The rotary kiln drying and cooling integrated machine according to claim 1, characterized in that: The feed cylinder (3) is equipped with an auger (10), the kiln tail (4) is equipped with a diversion component, and the kiln tail (4) is equipped with an air inlet (25) on one side.

3. The rotary kiln drying and cooling integrated machine according to claim 2, characterized in that: The diversion assembly includes an air distribution plate (23) disposed inside the kiln tail (4) and a discharge hopper (24) disposed at the bottom of the kiln tail (4). The drying kiln body (1), the cooling kiln body (2) and the kiln tail (4) are provided with core tubes (26).

4. The rotary kiln drying and cooling integrated machine according to claim 1, characterized in that: The bottom of the drying kiln (1) and the cooling kiln (2) is provided with a support plate (5), and two auxiliary plates (6) are fixedly installed on the bottom of the support plate (5). Multiple support seats (7) are provided on the top of the support plate (5), and the drying kiln (1) and the cooling kiln (2) are located above the multiple support seats (7).

5. The rotary kiln drying and cooling integrated machine according to claim 1, characterized in that: The stabilizing mechanism is used to assemble and stabilize the drying kiln (1) and the cooling kiln (2). The stabilizing mechanism includes two mounting flanges (8) located on opposite sides of the drying kiln (1) and the cooling kiln (2). One of the mounting flanges (8) has multiple guide grooves (21), and the other mounting flange (8) has multiple guide rods (30) fixedly installed on one side. The multiple guide rods (30) are all located inside the multiple guide grooves (21). Stabilizing components are provided on both sides of the outer wall of the two mounting flanges (8). The stabilizing components are used to stabilize the two mounting flanges (8).

6. The rotary kiln drying and cooling integrated machine according to claim 5, characterized in that: The stabilizing component includes a fixing plate (27) fixedly installed on both sides of the outer wall of the two mounting flanges (8) and a screw rod (28) screwed between the two fixing plates (27). A fixing handle (29) is fixedly installed on one side of the screw rod (28). The fixing handle (29) is located on one side of one of the mounting flanges (8). The outer walls of the drying kiln (1) and the cooling kiln (2) are provided with fixing sleeves (9). The outer walls of the two fixing sleeves (9) are provided with multiple ultrasonic vibrators. One side of each of the multiple ultrasonic vibrators is provided with a fixing member. The multiple ultrasonic vibrators are fixed to the fixing sleeves (9) by the fixing member.

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