Granulating apparatus

Abstract

The utility model provides a kind of granulating equipment.The granulating equipment includes: first cylinder, heating assembly is arranged on first cylinder, and inlet is arranged on the side cylinder wall of first cylinder;Second cylinder, cooling assembly is arranged on second cylinder;Conveying pipeline, the both ends of conveying pipeline are connected with first cylinder and second cylinder respectively, and conveying pipeline is set with first cylinder with predetermined angle of inclusion.The utility model solves the problems of long cooling time and low efficiency of the existing granulating equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of negative electrode material production equipment, and more specifically, to a granulation device. Background Technology

[0002] In the production and processing of graphite anode materials for lithium batteries, granulation is a crucial step. Granulation is typically completed in a granulation reactor. Graphite raw material powder and asphalt powder are mixed in a specific ratio and then fed into the reactor. The reactor has a heating function, causing the material to granulate at a high temperature. After granulation, the material is cooled to room temperature in a cooling reactor before being discharged. In existing granulation equipment, when the high-temperature granulated material is directly fed into the cooling reactor, several problems arise. First, hot air easily allows material to enter the cooling reactor, resulting in slow cooling and a long cooling time. Second, the hot air often contains vaporized tar, which can easily liquefy in the cooling tank after cooling, contaminating the material.

[0003] In other words, existing granulation equipment suffers from long cooling times and low efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a granulation device to solve the problems of long cooling time and low efficiency in existing granulation devices.

[0005] To achieve the above objectives, according to one aspect of the present invention, a granulation device is provided, comprising: a first cylinder, on which a heating component is disposed, and a feed inlet is disposed on the side wall of the first cylinder; a second cylinder, on which a cooling component is disposed; and a conveying pipe, the two ends of which are respectively connected to the first cylinder and the second cylinder, and the conveying pipe is disposed at a predetermined angle to the first cylinder.

[0006] Furthermore, the side wall of the first cylinder also has an exhaust port for venting, which is located downstream of the feed inlet.

[0007] Furthermore, the side wall of the first cylinder also has a first connection port that communicates with the conveying pipeline, and at least a portion of the exhaust port is located on the side of the first connection port near the feed port.

[0008] Furthermore, the first connecting port and the exhaust port are located on opposite sides of the first cylinder, and at least a portion of the first connecting port is positioned directly opposite the exhaust port.

[0009] Furthermore, the side wall of the second cylinder has a second connecting port and a discharge port. The second connecting port is connected to the conveying pipeline, and the discharge port and the second connecting port are located at the two ends of the second cylinder, respectively.

[0010] Furthermore, the heating assembly includes: a heating element, which is sleeved on the outside of the first cylinder; and an insulation layer, which is sleeved on the outside of the first cylinder, with the heating element located between the insulation layer and the first cylinder.

[0011] Furthermore, the first cylinder is located on top of the second cylinder.

[0012] Furthermore, the cooling assembly includes a cooling jacket fitted over the outside of the second cylinder, and the cooling jacket has a receiving space and a refrigerant inlet and a refrigerant outlet communicating with the receiving space, with the refrigerant outlet located above the refrigerant inlet.

[0013] Furthermore, the granulation equipment also includes a first screw and a first drive mechanism. The first screw is disposed in the first cylinder and is arranged along the axial direction of the first cylinder. The first drive mechanism is connected to one axial end of the first screw. And / or the granulation equipment also includes a second screw and a second drive mechanism. The second screw is disposed in the second cylinder and is arranged along the axial direction of the second cylinder. The second drive mechanism is connected to the second screw.

[0014] Furthermore, the helical direction of the first screw is opposite to that of the second screw.

[0015] The granulation equipment using the technical solution of this utility model includes a first cylinder, a second cylinder, and a conveying pipe. A heating component is provided on the first cylinder, and a feed inlet is provided on the side wall of the first cylinder. A cooling component is provided on the second cylinder. The two ends of the conveying pipe are respectively connected to the first cylinder and the second cylinder, and the conveying pipe is set at a predetermined angle to the first cylinder.

[0016] By installing a heating component on the first cylinder, the material entering the first cylinder through the feed inlet can be granulated at a high temperature. A cooling component on the second cylinder cools the granulated material. A conveying pipe between the first and second cylinders provides cooling space for hot air, reducing heat release upon entering the second cylinder. Furthermore, the conveying pipe's angle with the first cylinder obstructs the flow of hot air, facilitating its exit from the granulation equipment and reducing the amount of hot air entering the second cylinder. This effectively reduces the amount of heat entering the second cylinder, improving cooling efficiency and reducing energy consumption during the cooling process. Consequently, the material production process is more low-carbon and environmentally friendly, meeting ESG requirements. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a granulation device according to an optional embodiment of the present invention is shown;

[0019] Figure 2 It shows Figure 1 A schematic diagram of the structure of the first screw.

[0020] The above figures include the following reference numerals:

[0021] 10. First cylinder; 11. Feed inlet; 12. Exhaust outlet; 13. First connecting port; 20. Heating assembly; 21. Heating element; 22. Insulation layer; 30. Second cylinder; 31. Second connecting port; 32. Discharge port; 40. Cooling assembly; 41. Cooling jacket; 411. Refrigerant inlet; 412. Refrigerant outlet; 50. Conveying pipe; 60. First screw; 61. Rod core; 62. Spiral structure; 63. First section; 64. Second section; 65. Third section; 70. Second screw; 80. Exhaust gas treatment device; 90. First drive mechanism; 100. Second drive mechanism. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "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.

[0025] To address the problems of long cooling times and low efficiency in existing granulation equipment, this invention provides a granulation device.

[0026] like Figure 1 and Figure 2As shown, the granulation equipment includes a first cylinder 10, a second cylinder 30, and a conveying pipe 50. A heating component 20 is provided on the first cylinder 10, and a feed inlet 11 is provided on the side wall of the first cylinder 10. A cooling component 40 is provided on the second cylinder 30. The two ends of the conveying pipe 50 are connected to the first cylinder 10 and the second cylinder 30 respectively, and the conveying pipe 50 is set at a predetermined angle with the first cylinder 10.

[0027] By installing a heating component 20 on the first cylinder 10, the material entering the first cylinder 10 through the feed inlet 11 can be granulated at a high temperature. A cooling component 40 installed on the second cylinder 30 can cool the granulated material. A conveying pipe 50 is installed between the first cylinder 10 and the second cylinder 30. The conveying pipe 50 provides a certain cooling space for hot air, reducing heat release after the hot air enters the second cylinder 30. Simultaneously, the conveying pipe 50 is set at a predetermined angle to the first cylinder 10, which obstructs the flow of hot air, facilitating its escape from the granulation equipment and reducing the amount of hot air entering the second cylinder 30. This effectively reduces the heat entering the second cylinder 30, improving the cooling efficiency of the material inside, thus reducing energy consumption during the cooling process. This makes the material production process more low-carbon and environmentally friendly, meeting ESG requirements.

[0028] The angle between the first cylinder 10 and the conveying pipe 50 is between 20 degrees and 180 degrees. Specifically, it can be 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, 160 degrees, 170 degrees, or any two of the above values.

[0029] Optionally, the angle between the first cylinder 10 and the conveying pipe 50 is 90 degrees.

[0030] In some alternative embodiments, please refer to Figure 1 The first cylinder 10 also has an exhaust port 12 on its side wall for venting, located downstream of the feed inlet 11. By providing the exhaust port 12 on the side wall of the first cylinder 10, hot air inside the first cylinder 10 can be discharged to the outside of the granulation equipment through the exhaust port 12, reducing the amount of hot air entering the second cylinder 30 and allowing the material to cool rapidly inside the second cylinder 30. By placing the exhaust port 12 downstream of the feed inlet 11, the rate of hot air loss from the first cylinder 10 can be reduced, ensuring that the material inside the first cylinder 10 is granulated at a high temperature, thus guaranteeing the granulation effect.

[0031] In some alternative embodiments, please refer to Figure 1The granulation equipment also includes an exhaust gas treatment device 80. The exhaust port 12 is connected to the exhaust gas treatment device 80. The exhaust gas generated during the granulation process is filtered and purified by the exhaust gas treatment device 80 to reduce air pollution.

[0032] In addition, the conveying pipe 50 and the first cylinder 10 are set at a predetermined angle, which is conducive to the separation of exhaust gas that follows the material into the conveying pipe 50, further reducing the entry of harmful gases into subsequent processes. The separated harmful gases enter the exhaust gas treatment device 80 through the exhaust port 12, effectively reducing air pollution and benefiting environmental protection.

[0033] In some alternative embodiments, please refer to Figure 1 The side wall of the first cylinder 10 also has a first connecting port 13 that communicates with the conveying pipe 50, and a portion of the exhaust port 12 is close to the feed port 11 relative to the first connecting port 13. By bringing a portion of the exhaust port 12 close to the feed port 11 relative to the first connecting port 13, hot air can be discharged to the outside of the first cylinder 10 through the exhaust port 12 before the material enters the conveying pipe 50, effectively reducing the amount of hot air entering the conveying pipe 50, thereby reducing the amount of heat entering the second cylinder 30, which is beneficial to improving the cooling efficiency of the material in the second cylinder 30.

[0034] In some alternative embodiments, please refer to Figure 1 The first connecting port 13 and the exhaust port 12 are located on opposite sides of the first cylinder 10, and at least a portion of the first connecting port 13 is directly opposite the exhaust port 12. By aligning at least a portion of the first connecting port 13 with the exhaust port 12, the hot air inside the conveying pipe 50 can flow out of the granulation equipment through the first connecting port 13 and the exhaust port 12 during the material flow within the conveying pipe 50, further reducing the heat entering the second cylinder 30 and improving the cooling efficiency of the material inside the second cylinder 30.

[0035] In some alternative embodiments, please refer to Figure 1 The side wall of the second cylinder 30 has a second connecting port 31 and a discharge port 32. The second connecting port 31 is connected to the conveying pipe 50, and the discharge port 32 and the second connecting port 31 are located at opposite ends of the second cylinder 30. This arrangement can prolong the residence time of the material in the second cylinder 30, and can effectively cool the material.

[0036] In some alternative embodiments, please refer to Figure 1The heating assembly 20 includes a heating element 21 and an insulation layer 22. The heating element 21 is sleeved on the outside of the first cylinder 10; the insulation layer 22 is sleeved on the outside of the first cylinder 10, and the heating element 21 is located between the insulation layer 22 and the first cylinder 10. The heating element 21 can heat the first cylinder 10, so that the material inside the first cylinder 10 can be granulated at high temperature. The insulation layer 22 can reduce the heat loss at the heating element 21, which helps to ensure the heating efficiency of the heating element 21 on the first cylinder 10.

[0037] In some alternative embodiments, the first cylinder 10 has multiple temperature ranges that are adjustable. For example, the temperature of multiple temperature ranges increases sequentially along the material movement direction, and the temperature ranges are adjustable in the range of 200°C to 800°C to meet the heating requirements of different time periods in the granulation process.

[0038] In some alternative embodiments, the heating element 21 has multiple independent sub-heating components arranged along the axial direction of the first cylinder 10. The multiple independent sub-heating components sleeved on the first cylinder 10 give the first cylinder 10 multiple temperature ranges that are adjustable.

[0039] Optionally, the heating element 21 is an electromagnetic induction heating coil. Electromagnetic induction heating is used to heat the material, causing the asphalt powder to melt and coat the surface of the graphite raw material. This method offers rapid heating with an efficiency exceeding 90%, achieving energy conservation and consumption reduction.

[0040] In some alternative embodiments, please refer to Figure 1 The cooling assembly 40 includes a cooling jacket 41, which is fitted onto the outside of the second cylinder 30. The cooling jacket 41 has a receiving space and a refrigerant inlet 411 and a refrigerant outlet 412 communicating with the receiving space. The refrigerant outlet 412 is located above the refrigerant inlet 411. The refrigerant enters the receiving space through the refrigerant inlet 411 below. The refrigerant needs to overcome gravity to flow upwards to the refrigerant outlet 412, effectively extending the residence time of the refrigerant within the cooling jacket 41, allowing for sufficient heat exchange, improving refrigerant utilization, and reducing energy consumption. The cooling jacket 41, fitted onto the second cylinder 30, effectively ensures the contact area between the cooling assembly 40 and the second cylinder 30, facilitating rapid heat exchange within the second cylinder 30, shortening cooling time, and improving production efficiency.

[0041] In some alternative embodiments, the refrigerant is cooling water, but other cooling media are also possible, and no specific limitations are made here.

[0042] In some alternative embodiments, please refer to Figure 1The length of the cooling jacket 41 is less than the length of the second cylinder 30. This arrangement facilitates the assembly of the cooling jacket 41 onto the second cylinder 30. Furthermore, the length of the cooling jacket 41 is less than the length of the second cylinder 30, and the two ends of the cooling jacket 41 are spaced apart from the two ends of the second cylinder 30. This allows the material to be initially cooled by the residual heat of the second cylinder 30 before entering the area covered by the cooling jacket 41, thereby improving the cooling efficiency of the cooling jacket 41 and reducing energy waste.

[0043] In some alternative embodiments, please refer to Figure 1 The granulation equipment also includes a first screw 60 and a first drive mechanism 90. The first screw 60 is disposed inside the first cylinder 10 and is arranged axially along the first cylinder 10. The first drive mechanism 90 is connected to one axial end of the first screw 60. The first drive mechanism 90 drives the first screw 60 to rotate inside the first cylinder 10, which can, on the one hand, promote uniform mixing of materials and facilitate uniform heating of materials, and on the other hand, transport materials into the conveying pipe 50.

[0044] The first cylindrical body 10 has first pivot holes at both axial ends. The two ends of the first screw 60 pass through these first pivot holes, and the first screw 60 is rotatably connected to the first cylindrical body 10 through the engagement of its two ends with the first pivot holes. In some embodiments, the driving end of the first driving mechanism 90 passes through the first pivot hole and is rotatably connected to the first screw 60. In other embodiments, one axial end of the first screw 60 passes through the first pivot hole and is driven by the first driving mechanism 90. The first driving mechanism 90 drives the first screw 60 to rotate within the first cylindrical body 10.

[0045] In some alternative embodiments, please refer to Figure 2 The first screw 60 includes a core 61 and a helical structure 62 disposed on the core 61. The first screw 60 includes a first section 63, a second section 64 and a third section 65 connected in sequence.

[0046] In some alternative embodiments, the pitch of the helical structure 62 of the first screw 60 gradually decreases from the first segment 63 to the third segment 65. This gradual decrease in pitch means a gradual reduction in the granulation space, ensuring that the material can move stably forward within the first cylinder 10. Simultaneously, as the material advances, the compressive and shear forces it experiences gradually increase, which is beneficial for better mixing and for accelerating the melting of the asphalt to coat the surface of the graphite material.

[0047] In some alternative embodiments, the diameter of the core 61 of the first screw 60 gradually increases from the first section 63 to the third section 65. When the material enters the first section 63, the diameter of the first screw 60 is relatively small, which means that the gap between the core 61 of the first screw 60 and the inner wall of the first cylinder 10 is relatively large at the first section 63, which facilitates easy initial introduction and premixing of the material while reducing frictional resistance. As the material moves to the second section 64 and the third section 65, where the diameter gradually increases, the gap between the first screw 60 and the inner wall of the first cylinder 10 decreases, resulting in an increase in the internal pressure and shear force on the material. This change in pressure gradient helps to further compact and plasticize the material, as well as promote the uniform mixing and coating of asphalt and graphite.

[0048] In some alternative embodiments, the first screw 60 rotates at a constant speed within the first cylinder 10, with a rotational speed of 100 to 500 r / min, and the rotational speed of the first screw 60 within the first cylinder 10 is adjustable.

[0049] In some alternative embodiments, the ratio of the length of the first screw 60 to the diameter of the core 61 of the first screw 60 is greater than or equal to 5 and less than or equal to 30.

[0050] In some alternative embodiments, please refer to Figure 1 The granulation equipment also includes a second screw 70 and a second drive mechanism 100. The second screw 70 is disposed inside the second cylinder 30 and is arranged axially along the second cylinder 30. The second drive mechanism 100 is connected to the second screw 70. The second drive mechanism 100 drives the second screw 70 to rotate inside the second cylinder 30, which can, on the one hand, promote uniform mixing of materials and facilitate uniform cooling of materials, and on the other hand, transport materials to the discharge port.

[0051] The second cylinder 30 has second pivot holes at both axial ends, and the two ends of the second screw 70 pass through the second pivot holes. The second screw 70 is rotatably connected to the second cylinder 30 through the engagement of its two ends with the second pivot holes. In some embodiments, the driving end of the second drive mechanism 100 passes through the second pivot hole and is rotatably connected to the second screw 70. In other embodiments, one axial end of the second screw 70 passes through the second pivot hole and is driven by the second drive mechanism 100. The second drive mechanism 100 drives the second screw 70 to rotate within the second cylinder 30.

[0052] In some optional embodiments, the second screw 70 rotates at a constant speed within the second cylinder 30, with a speed of 100 to 500 r / min. The speed of the second screw 70 within the second cylinder 30 is adjustable, ensuring that the cooling production efficiency matches the granulation production efficiency.

[0053] In some alternative embodiments, please refer to Figure 1 The helical direction of the first screw 60 is opposite to that of the second screw 70. This arrangement ensures that the material moves in opposite directions within the first cylinder 10 and the second cylinder 30. This configuration allows the first and second cylinders 10 and 30 to be arranged vertically at intervals, reducing the space occupied by the granulation equipment and promoting its miniaturization. Furthermore, by designing the first screw 60 and the second screw 70 with opposite helical directions, it ensures that the material does not flow backward within the second cylinder 30, facilitating its movement along a predetermined path and preventing unintended material circulation within the equipment, thus guaranteeing the orderliness and efficiency of the production process.

[0054] In some alternative embodiments, the first drive mechanism 90 is located at one end of the first cylinder 10 along the axial direction, and the second drive mechanism 100 is located at one end of the second cylinder 30 along the axial direction. The first cylinder 10 and the second cylinder 30 are arranged in the radial direction, or in the vertical direction, and the first drive mechanism 90 and the second drive mechanism 100 are located on the same side of the first cylinder 10 and the second cylinder 30, so as to make effective use of space.

[0055] In some alternative embodiments, the first cylinder 10 is located above the second cylinder 30. This arrangement facilitates the rapid entry of the material granulated by the first cylinder 10 into the second cylinder 30, which helps to reduce energy consumption.

[0056] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A granulation device, characterized in that, include: A first cylinder (10) is provided with a heating assembly (20), and a feed inlet (11) is provided on the side wall of the first cylinder (10). The second cylinder (30) is provided with a cooling assembly (40); A conveying pipe (50) is provided, the two ends of which are connected to the first cylinder (10) and the second cylinder (30) respectively, and the conveying pipe (50) is set at a predetermined angle to the first cylinder (10).

2. The granulation equipment according to claim 1, characterized in that, The first cylinder (10) also has an exhaust port (12) for exhausting air on its side wall, and the exhaust port (12) is located downstream of the feed port (11).

3. The granulation equipment according to claim 2, characterized in that, The side wall of the first cylinder (10) also has a first communication port (13) communicating with the conveying pipe (50), and at least a portion of the exhaust port (12) is located on the side of the first communication port (13) near the feed port (11).

4. The granulation equipment according to claim 3, characterized in that, The first connecting port (13) and the exhaust port (12) are located on opposite sides of the first cylinder (10), and at least a portion of the first connecting port (13) is directly opposite the exhaust port (12).

5. The granulation equipment according to claim 1, characterized in that, The side wall of the second cylinder (30) has a second connecting port (31) and a discharge port (32). The second connecting port (31) is connected to the conveying pipe (50). The discharge port (32) and the second connecting port (31) are located at the two ends of the second cylinder (30), respectively.

6. The granulation equipment according to claim 1, characterized in that, The heating assembly (20) includes: Heating element (21), which is sleeved on the outside of the first cylinder (10); The insulation layer (22) is sleeved on the outside of the first cylinder (10), and the heating element (21) is located between the insulation layer (22) and the first cylinder (10).

7. The granulation equipment according to claim 1, characterized in that, The first cylinder (10) is located on the upper side of the second cylinder (30).

8. The granulation equipment according to claim 1, characterized in that, The cooling assembly (40) includes a cooling sleeve (41) which is fitted on the outside of the second cylinder (30). The cooling sleeve (41) has a receiving space and a refrigerant inlet (411) and a refrigerant outlet (412) communicating with the receiving space. The refrigerant outlet (412) is located above the refrigerant inlet (411).

9. The granulation equipment according to any one of claims 1 to 8, characterized in that, The granulation equipment further includes a first screw (60) and a first drive mechanism (90). The first screw (60) is disposed inside the first cylinder (10) and is axially arranged along the first cylinder (10). The first drive mechanism (90) is connected to one axial end of the first screw (60); and / or The granulation equipment further includes a second screw (70) and a second drive mechanism (100). The second screw (70) is disposed inside the second cylinder (30) and is arranged along the axial direction of the second cylinder (30). The second drive mechanism (100) is connected to the second screw (70).

10. The granulation equipment according to claim 9, characterized in that, The helical direction of the first screw (60) is opposite to that of the second screw (70).

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