Drying device for carbon black

Abstract

The utility model discloses a carbon black drying device which comprises a drying box, an arc-shaped heating seat is arranged at the bottom end in the drying box, an arc-shaped intercepting net is arranged above the arc-shaped heating seat in a matched mode, a rotating shaft is coaxially arranged between the arc-shaped intercepting net and the arc-shaped heating seat, and the rotating shaft is arranged on the drying box through a bearing. An exhaust pipe is arranged at the top of the drying box, a feeding pipe is arranged on the side wall of the drying box and located below the arc-shaped intercepting net, a discharging pipe is arranged at the bottom of the tail end of the drying box, and the bottom end of the discharging pipe is connected with a cooling box; according to the carbon black cooling device, the heating effect and the heating efficiency of carbon black can be improved, meanwhile, the discharged carbon black can be cooled, and high-temperature discharging is avoided.

Description

Technical Field

[0001] This utility model relates to the field of carbon black drying technology, and more specifically, to a drying apparatus for carbon black. Background Technology

[0002] Carbon black is a nanoscale particle composed of carbon elements, typically produced through the incomplete combustion or thermal decomposition of hydrocarbons. It is widely used in industries such as rubber, plastics, inks, and coatings. Due to the frequent involvement of wet granulation or water cooling in its production processes, carbon black surfaces absorb a large amount of moisture (30%-50%). If not sufficiently dried, this moisture can cause the carbon black to clump, resulting in poor flowability and affecting subsequent processing performance. In composite materials such as rubber, moisture can also induce bubbles, reduce product strength, and even accelerate aging. Furthermore, high moisture content increases transportation and storage costs and may promote microbial growth. Therefore, drying is a critical step in carbon black production, requiring the removal of moisture through methods such as heating, airflow, or vacuum to ensure a moisture content below 1% to meet the physical and chemical performance requirements of industrial applications.

[0003] Existing carbon black drying equipment typically discharges high-temperature carbon black directly after the drying process. Due to the high drying temperature (usually between 200-400℃), the discharged carbon black remains at a high temperature, posing a significant safety hazard if operators accidentally come into contact with it. Furthermore, if the high-temperature carbon black is not cooled before entering the packaging or storage process, it may cause the packaging materials to deform or even melt due to heat, affecting the safety of subsequent transportation and storage.

[0004] On the other hand, during the drying process, carbon black particles easily generate a large amount of dust due to mechanical actions such as feeding, tumbling, and hot air agitation. These fine particles, after mixing with water vapor, are discharged with the exhaust gas, not only causing carbon black loss and reducing product yield, but also gradually depositing in the exhaust pipes, leading to pipe blockage, reduced ventilation efficiency, and even affecting the stable operation of the drying system. Furthermore, if dust-laden exhaust gas is discharged directly without effective treatment, it will pollute the workshop environment, endanger worker health, and may pose a fire or explosion risk due to dust accumulation. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a drying device for carbon black, so as to solve the technical problems mentioned in the background art, that the carbon black drying device directly discharges high-temperature carbon black, which easily causes safety hazards, and the dust in the carbon black is directly discharged through water vapor.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A drying apparatus for carbon black includes a drying chamber. An arc-shaped heating seat is located at the bottom of the drying chamber. An arc-shaped intercepting net is fitted above the arc-shaped heating seat. A rotating shaft is coaxially arranged between the arc-shaped intercepting net and the arc-shaped heating seat. The rotating shaft is mounted on the drying chamber via bearings and extends outwards to be connected to a drive structure. A spiral conveying blade is integrally mounted on the rotating shaft. An exhaust pipe is located at the top of the drying chamber. A feed pipe is located on the side wall of the drying chamber, below the arc-shaped intercepting net. A discharge pipe is located at the bottom of the tail end of the drying chamber. A cooling chamber is connected to the bottom end of the discharge pipe, and a spiral discharge structure is installed inside the cooling chamber.

[0010] The present invention is further configured such that a conveying cavity is provided on the rotating shaft, and a heating cavity is provided on the spiral conveying blade in conjunction with the conveying cavity. Medium conveying structures are provided at both ends of the rotating shaft in conjunction with the conveying cavity. Through the cooperation of the conveying cavity and the heating cavity, the heating medium can flow inside the spiral blade, so that the spiral conveying blade can simultaneously heat the carbon black during the process of conveying and tumbling the carbon black, thereby improving the heating effect and efficiency of the carbon black.

[0011] The present invention is further configured such that the medium conveying structure includes a heating medium input pipe and a heating medium output pipe. The heating medium input pipe and the heating medium output pipe are respectively disposed at both ends of the rotating shaft through sealed bearings and are connected to the corresponding conveying chambers. The heating medium can be conveyed into the conveying chamber through the heating medium input pipe, and then enters the heating chamber inside the spiral conveying blade through the conveying chamber, and flows along the spiral conveying blade in the heating chamber, so that the spiral conveying blade can heat the tumbling carbon black, improve the heating uniformity and heating efficiency of the carbon black. Finally, the heating medium is conveyed to the heating medium output pipe through the conveying chamber at the tail end of the rotating shaft.

[0012] The present invention is further configured such that the driving structure includes a first motor, and a synchronous belt drive structure is provided between the first motor and the rotating shaft. When the first motor is started, the rotation shaft can be controlled to drive the spiral conveyor blades to rotate through the cooperation of the first motor and the synchronous belt drive structure, thereby realizing the spiral uniform tumbling and conveying of the carbon black to be dried into the drying chamber. In this way, during the drying process of the carbon black, the carbon black falls onto the arc-shaped heating seat and is heated by the arc-shaped heating seat. During the tumbling and conveying process of the spiral conveyor blades, water vapor can be fully discharged to the outside. Simultaneously, the spiral conveyor blades can heat and dry the carbon black at the same time during the tumbling process, improving the drying efficiency of the carbon black. At the same time, the uniform and stable conveying of the carbon black can be achieved during the drying process, thereby realizing continuous operation during carbon black drying.

[0013] The present invention is further configured such that the spiral discharge structure includes a spiral discharge shaft, which is installed in the cooling box through bearings and extends outward to be connected to a second motor. When the second motor is started, the spiral discharge shaft can be rotated, thereby uniformly rotating and conveying the carbon black entering the cooling box outward. This can also improve the cooling uniformity of the carbon black during the discharge process in the cooling box and improve the cooling effect.

[0014] The present invention is further configured such that a scraper is provided at the outer end of the spiral conveying blade. The scraper slides and fits in contact with the arc-shaped intercepting net and the arc-shaped heating seat. When the spiral conveying blade rotates, it will drive the scraper to rotate synchronously, which can scrape the inner surface of the arc-shaped heating seat and the arc-shaped intercepting net, so that the carbon black falling on the arc-shaped heating seat can be fully turned over and the water vapor in it can be discharged. At the same time, it can prevent carbon black dust and impurities from adhering to the arc-shaped intercepting net, ensuring that water vapor can pass through the arc-shaped intercepting net and be fully discharged.

[0015] The present invention is further configured such that a heating plate is provided inside the arc-shaped heating seat, the heating plate is used to heat the carbon black in contact with the arc-shaped heating seat, and a cooling coil is provided inside the cooling box, the cooling coil is used to cool down the dried carbon black entering the cooling box, thereby reducing the temperature of the carbon black when it is discharged.

[0016] The present invention is further configured such that a feeding hopper is provided at the feeding pipe, and a high-temperature drying gas inlet pipe is provided at the tail end of the drying box. The high-temperature drying gas inlet pipe is located below the arc-shaped intercepting net. The feeding hopper is used to improve the feeding convenience of the feeding pipe. The high-temperature drying gas inlet pipe can be used to blow the steam generated during the carbon black drying process away from the discharge pipe, thereby improving the drying effect of the carbon black and better realizing the separation between steam and carbon black.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a drying device for carbon black, which has the following beneficial effects:

[0019] 1. This utility model features a drying chamber equipped with a cooperating arc-shaped heating seat and an arc-shaped intercepting net. After the carbon black to be dried enters the drying chamber through the feed pipe, it is positioned between the arc-shaped heating seat and the arc-shaped intercepting net. This allows dust and other particles flying during the drying process to be intercepted by the arc-shaped intercepting net, preventing dust separation during the drying process. During this process, a first motor controls the rotating shaft to drive the spiral conveyor blades, achieving uniform stirring and conveying of the carbon black within the drying chamber. This allows moisture to pass through the arc-shaped intercepting net and exit the drying chamber through the exhaust pipe at the top, thus achieving the drying of the carbon black. The rotation of the spiral conveyor blades synchronously drives the scraper to rotate, ensuring the effective stirring of the carbon black on the arc-shaped heating seat while maintaining the cleanliness of the arc-shaped intercepting net.

[0020] 2. This utility model has a conveying cavity and a heating cavity that cooperate with each other on the rotating shaft and the spiral conveying blades, and is equipped with a heating medium input pipe and a heating medium output pipe. In this way, the heating medium can be conveyed into the conveying cavity through the heating medium input pipe, and then enters the heating cavity inside the spiral conveying blades through the conveying cavity. It flows along the spiral conveying blades in the heating cavity, so that the spiral conveying blades can heat the tumbling carbon black, improve the heating uniformity and heating efficiency of the carbon black. Finally, the heating medium is conveyed to the heating medium output pipe through the conveying cavity at the tail end of the rotating shaft.

[0021] 3. This utility model has a discharge pipe at the bottom of the tail end of the drying box, and a cooling box is connected to the bottom end of the discharge pipe. The cooling box is equipped with a spiral discharge structure, which includes a spiral discharge shaft and a second motor that cooperate with each other. After the dried carbon black enters the interior of the cooling box through the discharge pipe, the spiral discharge shaft can be rotated by the second motor to achieve uniform tumbling and conveying of the carbon black in the cooling box, thereby achieving uniform cooling of the carbon black during the discharge process and avoiding high-temperature discharge of the carbon black after drying. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a drying device for carbon black according to this utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of a drying device for carbon black according to this utility model. Figure 2 ;

[0024] Figure 3 This is a cross-sectional view of the internal structure of the drying oven in this utility model. Figure 1 ;

[0025] Figure 4 This is a cross-sectional view of the internal structure of the drying oven in this utility model. Figure 2 ;

[0026] Figure 5 This is a cross-sectional view of the internal structure of the cooling box in this utility model;

[0027] Figure 6 This is a cross-sectional schematic diagram of the connection structure between the transfer shaft, the spiral conveying blades, the conveying chamber, and the heating chamber in this utility model.

[0028] In the diagram: 1. Drying oven; 2. Arc-shaped heating seat; 3. Arc-shaped intercepting net; 4. Rotating shaft; 5. Spiral conveyor blades; 6. Exhaust pipe; 7. Feed pipe; 8. Discharge pipe; 9. Cooling box; 10. Conveying chamber; 11. Heating chamber; 12. Heating medium input pipe; 13. Heating medium output pipe; 14. First motor; 15. Synchronous belt drive structure; 16. Spiral discharge shaft; 17. Second motor; 18. Scraper; 19. Heating plate; 20. Cooling coil; 21. Feed hopper; 22. High-temperature drying gas inlet pipe. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] Please see Figures 1-6 A drying device for carbon black includes a drying chamber 1. An arc-shaped heating seat 2 is provided at the bottom of the drying chamber 1. An arc-shaped intercepting net 3 is provided above the arc-shaped heating seat 2. A rotating shaft 4 is coaxially arranged between the arc-shaped intercepting net 3 and the arc-shaped heating seat 2. The rotating shaft 4 is mounted on the drying chamber 1 through bearings and extends outward to be connected to a drive structure. A spiral conveying blade 5 is integrally provided on the rotating shaft 4. An exhaust pipe 6 is provided at the top of the drying chamber 1. A feed pipe 7 is provided on the side wall of the drying chamber 1 and below the arc-shaped intercepting net 3. A discharge pipe 8 is provided at the bottom of the tail end of the drying chamber 1. A cooling box 9 is connected to the bottom end of the discharge pipe 8. A spiral discharge structure is provided inside the cooling box 9.

[0033] Please see Figures 1-6As one embodiment of the rotating shaft 4: a conveying cavity 10 is provided on the rotating shaft 4, and a heating cavity 11 is provided on the spiral conveying blade 5 in conjunction with the conveying cavity 10. Medium conveying structures are provided at both ends of the rotating shaft 4 in conjunction with the conveying cavity 10. Through the cooperation of the conveying cavity 10 and the heating cavity 11, the heating medium can flow inside the spiral blade, so that the spiral conveying blade 5 can simultaneously heat the carbon black during the conveying and stirring process, thereby improving the heating effect and efficiency of the carbon black.

[0034] Please see Figures 1-6 As one embodiment of the medium conveying structure: the medium conveying structure includes a heating medium input pipe 12 and a heating medium output pipe 13. The heating medium input pipe 12 and the heating medium output pipe 13 are respectively set at both ends of the rotating shaft 4 through sealed bearings and are connected to the corresponding conveying chambers 10. The heating medium can be conveyed into the conveying chamber 10 through the heating medium input pipe 12, and then enters the heating chamber 11 inside the spiral conveying blade 5 through the conveying chamber 10. It flows along the spiral conveying blade 5 in the heating chamber 11, so that the spiral conveying blade 5 can heat the tumbling carbon black, improve the heating uniformity and heating efficiency of the carbon black. Finally, the heating medium is conveyed to the heating medium output pipe 13 through the conveying chamber 10 at the tail end of the rotating shaft 4.

[0035] Please see Figures 1-6 As one implementation of the drive structure: the drive structure includes a first motor 14, and a synchronous belt drive structure 15 is provided between the first motor 14 and the rotating shaft 4. When the first motor 14 is started, the rotation shaft 4 can be controlled to drive the spiral conveying blades 5 to rotate through the cooperation of the first motor 14 and the synchronous belt drive structure 15, thereby realizing the spiral uniform tumbling conveying of the carbon black to be dried into the drying chamber 1. In this way, during the drying process of carbon black, the carbon black falls onto the arc-shaped heating seat 2 and is heated by the arc-shaped heating seat 2. During the tumbling conveying process of the spiral conveying blades 5, water vapor can be fully discharged to the outside. Simultaneously, the spiral conveying blades 5 can heat and dry the carbon black at the same time during the tumbling process, improving the drying efficiency of carbon black. At the same time, the uniform and stable conveying of carbon black can be achieved during the drying process, thereby realizing continuous operation during carbon black drying.

[0036] Please see Figures 1-6 As one implementation of the spiral discharge structure: the spiral discharge structure includes a spiral discharge shaft 16, which is installed in the cooling box 9 through bearings and extends outward to be connected to a second motor 17. When the second motor 17 is started, the spiral discharge shaft 16 can be rotated, thereby uniformly rotating and conveying the carbon black entering the cooling box 9 outward. In this way, the cooling uniformity of the carbon black during the discharge process in the cooling box 9 can be improved, and the cooling effect can be improved.

[0037] Please see Figures 1-6 As one embodiment of the spiral conveying blade 5: a scraper 18 is provided at the outer end of the spiral conveying blade 5. The scraper 18 slides and fits in contact with the arc-shaped intercepting net 3 and the arc-shaped heating seat 2. When the spiral conveying blade 5 rotates, it will drive the scraper 18 to rotate synchronously, which can scrape the inner surface of the arc-shaped heating seat 2 and the arc-shaped intercepting net 3, so that the carbon black falling on the arc-shaped heating seat 2 can be fully turned over and the water vapor in it can be discharged. At the same time, it can prevent carbon black dust and impurities from adhering to the arc-shaped intercepting net 3, and ensure that water vapor can pass through the arc-shaped intercepting net 3 and be fully discharged.

[0038] Please see Figures 1-6 As one embodiment of the arc-shaped heating seat 2: a heating plate 19 is provided inside the arc-shaped heating seat 2. The heating plate 19 is used to heat the carbon black in contact with the arc-shaped heating seat 2. A cooling coil 20 is provided inside the cooling box 9. The cooling coil 20 is used to cool down the dried carbon black that enters the cooling box 9 and reduce the temperature when the carbon black is discharged.

[0039] Please see Figures 1-6 As one embodiment of the feed pipe 7: a feed hopper 21 is provided at the feed pipe 7, and a high-temperature drying gas inlet pipe 22 is provided at the tail end of the drying box 1. The high-temperature drying gas inlet pipe 22 is located below the arc-shaped intercepting net 3. The feed hopper 21 is used to improve the feeding convenience of the feed pipe 7. The high-temperature drying gas inlet pipe 22 can be used to blow the steam generated during the carbon black drying process away from the discharge pipe 8. At the same time, it can improve the drying effect of the carbon black and better achieve the separation between steam and carbon black. The airflow in the high-temperature drying gas inlet pipe 22 can be obtained by drying and recovering the high-temperature airflow in the gas pipe. This is the existing known technology and will not be described in detail in this utility model.

[0040] In summary:

[0041] This invention features an arc-shaped heating seat 2 and an arc-shaped intercepting net 3 arranged in a cooperating manner inside the drying chamber 1. After the carbon black to be dried enters the drying chamber 1 through the feed pipe 7, it will be positioned between the arc-shaped heating seat 2 and the arc-shaped intercepting net 3. This allows dust and other particles flying during the drying process to be intercepted by the arc-shaped intercepting net 3, preventing dust separation during the drying process. During this process, the first motor 14 controls the rotating shaft 4 to drive the spiral conveying blades 5 to rotate, achieving uniform stirring and conveying of the carbon black within the drying chamber 1. This allows moisture to pass through the arc-shaped intercepting net 3 and be discharged from the drying chamber 1 through the exhaust pipe 6 at the top, thus achieving the drying of the carbon black. The rotation of the spiral conveying blades 5 synchronously drives the scraper 18 to rotate, ensuring the stirring effect of the spiral conveying blades 5 on the arc-shaped heating seat 2 while maintaining the cleanliness of the arc-shaped intercepting net 3.

[0042] This invention features a conveying cavity 10 and a heating cavity 11 that cooperate with each other on the rotating shaft 4 and the spiral conveying blade 5. A heating medium input pipe 12 and a heating medium output pipe 13 are also provided. In this way, the heating medium can be conveyed into the conveying cavity 10 through the heating medium input pipe 12, and then enters the heating cavity 11 inside the spiral conveying blade 5 through the conveying cavity 10. The medium flows along the spiral conveying blade 5 in the heating cavity 11, thereby enabling the spiral conveying blade 5 to heat the agitated carbon black, improving the heating uniformity and heating efficiency of the carbon black. Finally, the heating medium is conveyed to the heating medium output pipe 13 through the conveying cavity 10 at the tail end of the rotating shaft 4.

[0043] This invention features a discharge pipe 8 at the bottom of the tail end of the drying chamber 1. A cooling chamber 9 is connected to the bottom of the discharge pipe 8. The cooling chamber 9 contains a spiral discharge structure, which includes a spiral discharge shaft 16 and a second motor 17 that cooperate with each other. After the dried carbon black enters the cooling chamber through the discharge pipe 8, the spiral discharge shaft 16 can be rotated by the second motor 17 to achieve uniform tumbling and conveying of the carbon black in the cooling chamber 9. This ensures uniform cooling of the carbon black during the discharge process and prevents the carbon black from being discharged at high temperature after drying.

[0044] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0045] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here.

[0046] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them.

[0047] If any of the technical solutions mentioned above involve a synchronous belt drive structure, and there is no specific structure, they are all existing technologies involving the combination of synchronous belt and synchronous pulley. The connection between the synchronous belt and the shaft structure is a known technology and will not be elaborated upon in this utility model.

[0048] Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, and their specific circuit structures will not be elaborated here.

Claims

1. A drying apparatus for carbon black, comprising a drying chamber (1), characterized in that: An arc-shaped heating seat (2) is provided at the bottom of the interior of the drying chamber (1). An arc-shaped intercepting net (3) is provided above the arc-shaped heating seat (2). A rotating shaft (4) is coaxially provided between the arc-shaped intercepting net (3) and the arc-shaped heating seat (2). The rotating shaft (4) is mounted on the drying chamber (1) through a bearing and extends outward to be connected to a drive structure. A spiral conveying blade (5) is integrally provided on the rotating shaft (4). An exhaust pipe (6) is provided at the top of the drying chamber (1). A feed pipe (7) is provided on the side wall of the drying chamber (1) and below the arc-shaped intercepting net (3). A discharge pipe (8) is provided at the bottom of the tail end of the drying chamber (1). A cooling box (9) is connected to the bottom end of the discharge pipe (8). A spiral discharge structure is provided inside the cooling box (9).

2. The drying apparatus for carbon black according to claim 1, characterized in that: The rotating shaft (4) is provided with a conveying cavity (10), and the spiral conveying blade (5) is provided with a heating cavity (11) in conjunction with the conveying cavity (10). The two ends of the rotating shaft (4) are provided with a medium conveying structure in conjunction with the conveying cavity (10).

3. A drying apparatus for carbon black according to claim 2, characterized in that: The medium conveying structure includes a heating medium input pipe (12) and a heating medium output pipe (13). The heating medium input pipe (12) and the heating medium output pipe (13) are respectively set at both ends of the rotating shaft (4) through sealed bearings and are connected to the corresponding conveying chamber (10).

4. A drying apparatus for carbon black according to claim 1, characterized in that: The drive structure includes a first motor (14), and a synchronous belt drive structure (15) is provided between the first motor (14) and the rotating shaft (4).

5. A drying apparatus for carbon black according to claim 1, characterized in that: The spiral discharge structure includes a spiral discharge shaft (16), which is mounted in the cooling box (9) via bearings and extends outward to be connected to a second motor (17).

6. A drying apparatus for carbon black according to any one of claims 1-5, characterized in that: The outer end of the spiral conveying blade (5) is provided with a scraper (18), which slides and fits against the arc-shaped intercepting net (3) and the arc-shaped heating seat (2).

7. A drying apparatus for carbon black according to claim 1, characterized in that: The arc-shaped heating seat (2) is equipped with a heating plate (19), and the cooling box (9) is equipped with a cooling coil (20).

8. A drying apparatus for carbon black according to claim 1, characterized in that: A feed hopper (21) is provided at the feed pipe (7), and a high-temperature drying gas inlet pipe (22) is provided at the tail end of the drying box (1). The high-temperature drying gas inlet pipe (22) is located below the arc-shaped interception net (3).

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