Self-cooling centrifugal pelletizing apparatus

Abstract

The application provides a self-cooling centrifugal granulation device, and relates to the technical field of centrifugal granulation. The self-cooling centrifugal granulation device comprises a transmission box, an atomization assembly, a rotating shaft for driving a granulation disc to rotate, and a fan blade installed on the rotating shaft. The two ends of the rotating shaft in the axial direction are respectively connected in rotation with the top wall and the bottom wall of the transmission box. The granulation disc is located above the top wall. The fan blade and the atomization assembly are located in the transmission box. The nozzles of the atomization assembly are distributed around the rotating shaft and are connected with the circumferential side wall of the transmission box. The top wall and the bottom wall are respectively provided with an air outlet and an air inlet which are in communication with the transmission box.

Description

Technical Field

[0001] This invention relates to the field of centrifugal granulation technology, and more specifically, to a self-cooling centrifugal granulation device. Background Technology

[0002] Centrifugal granulation of high-temperature molten materials involves feeding the molten material onto a granulation disc (or granulation cup). The disc is connected to a drive motor via a drive shaft and rotates at high speed under the motor's drive. As the disc rotates, it pulls the molten material flowing onto it, causing it to rotate as well. Under centrifugal force, the molten material forms droplets that fly tangentially along the edge of the disc, cooling and solidifying during flight to form solid particles. During this process, due to the high temperature of the molten material (generally above 1400℃), the disc is heated due to direct, large-area contact with the material. The drive shaft and bearings of the disc are also heated due to direct or indirect contact with the disc. When these heated components reach excessively high temperatures, they are prone to damage and failure. Summary of the Invention

[0003] The problem addressed by this invention is: how to reduce the impact of high temperature on heated components in granulation equipment.

[0004] To address the aforementioned problems, this invention provides a self-cooling centrifugal granulation device, comprising a transmission box, an atomizing component, a rotating shaft that drives the granulation disc to rotate, and fan blades mounted on the rotating shaft. The two ends of the rotating shaft are rotatably connected to the top and bottom walls of the transmission box, respectively. The granulation disc is located above the top wall. The fan blades and the atomizing component are located inside the transmission box. The nozzles of the atomizing component are distributed around the rotating shaft and connected to the circumferential side walls of the transmission box. The top and bottom walls are respectively provided with an air outlet and an air inlet communicating with the transmission box.

[0005] Optionally, at least two fan blades are distributed along the axial direction of the rotating shaft, and the curvature of the two fan blades increases in the direction toward the air outlet.

[0006] Optionally, the fan blade includes a guide flange located on the end face of the fan blade in the air delivery direction, the guide flange extending along the rotation direction of the fan blade, and / or, the guide flange located on the edge of the fan blade away from its rotation axis, one end of the guide flange being connected to the edge, and the other end being bent toward the air delivery direction.

[0007] Optionally, the self-cooling centrifugal granulation equipment further includes an air inlet heat exchange coil, which is located inside the transmission box and used to introduce a heat exchange medium. The air inlet heat exchange coil is connected to the bottom wall and covers the air inlet hole. Alternatively, the air inlet heat exchange coil is connected to the top wall and covers the air outlet hole.

[0008] Optionally, the self-cooled centrifugal granulation equipment further includes an air duct, which is located at one end of the top wall facing the granulation disc and surrounds the air outlet. One end of the air duct is connected to the top wall, and the other end extends toward the granulation disc, with a gap between them.

[0009] Optionally, the inner wall of the air duct is provided with guide fins, which extend along the axial direction of the air duct and are arranged at intervals along the circumference of the air duct.

[0010] Optionally, the fan blades are provided with a heat-resistant coating.

[0011] Optionally, the self-cooling centrifugal granulation equipment further includes a temperature sensor, which is installed on the granulation disc, the air inlet and the transmission box, and is used for communication connection with the host computer.

[0012] Optionally, the self-cooled centrifugal granulation equipment further includes a granulation chamber, which is covered by the transmission box. A guide pipe is provided on the granulation chamber and is aligned with the granulation disc. The granulation chamber includes a granulation bed surrounding the transmission box. The granulation chamber also includes a cold air inlet on its side wall, a hot air outlet on its top, and multiple air caps on the granulation bed, which are arranged along the slope of the granulation bed.

[0013] Optionally, the rotating shaft is rotatably connected to the top wall and the bottom wall respectively via bearing seats, and the bearing seats are provided with a plurality of cold air exhaust channels extending along the axial direction of the rotating shaft.

[0014] Compared with related technologies, the self-cooling centrifugal granulation device of the present invention has an air outlet and an air inlet respectively provided on the top and bottom walls of the transmission box, which are connected to the transmission box. The air inlet and air outlet form a fluid flow channel in the vertical direction of the transmission box. The two ends of the rotating shaft are rotatably connected to the top and bottom walls of the transmission box respectively, and the fan blades are mounted on the rotating shaft. When the rotating shaft drives the granulation disk to rotate, it drives the fan blades to rotate simultaneously. The rotation of the fan blades allows the fluid outside the transmission box to enter the transmission box from the air inlet and then flow to the granulation disk from the air outlet. At the same time, the nozzle of the atomizing component can spray cooling mist into the transmission box, further reducing the internal temperature of the transmission box, thereby reducing the temperature of the fluid flowing out from the air outlet. Furthermore, with the rotation of the fan blades, the fluid can exchange heat with the granulation disk to reduce the temperature of the granulation disk, thereby reducing the impact of high temperature on the structure of the granulation disk. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the self-cooling centrifugal granulation device in an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the granulation chamber in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures:

[0018] 100-Transmission box; 110-Top wall; 111-Air outlet; 120-Bottom wall; 121-Air inlet; 200-Granulation disc; 300-Rotating shaft; 400-Fan blade; 500-Atomizing component; 600-Guide flange; 700-Air outlet heat exchange coil; 800-Air duct; 900-Granulation chamber; 910-Guide pipe; 920-Granulation bed; 930-Cold air inlet; 940-Hot air outlet; 950-Air cap; 960-Finned feeder. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] In the accompanying drawings, the X-axis represents the horizontal position, with the positive direction of the X-axis indicating the right side and the negative direction indicating the left side; the Z-axis represents the vertical position, with the positive direction of the Z-axis indicating the upper side and the negative direction indicating the lower side. It should be noted that the aforementioned representations of the X and Z axes are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention 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 the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0022] Combination Figure 1 As shown, this embodiment of the invention provides a self-cooling centrifugal granulation device, including a transmission box 100, an atomizing component 500, a rotating shaft 300 that drives the granulation disc 200 to rotate, and fan blades 400 installed on the rotating shaft 300. The two ends of the rotating shaft 300 in the axial direction are rotatably connected to the top wall 110 and the bottom wall 120 of the transmission box 100, respectively. The granulation disc 200 is located above the top wall 110. The fan blades 400 and the atomizing component 500 are located inside the transmission box 100. The nozzles of the atomizing component 500 are distributed around the rotating shaft 300 and connected to the circumferential side wall of the transmission box 100. The top wall 110 and the bottom wall 120 are respectively provided with an air outlet 111 and an air inlet 121 communicating with the transmission box 100.

[0023] Specifically, from top to bottom, the self-cooling centrifugal granulation equipment consists of a granulation disc 200, a rotating shaft 300, and a transmission box 100. The transmission box 100 includes a top wall 110 and a bottom wall 120. The rotating shaft 300 passes through the top wall 110 and the bottom wall 120. The upper end of the rotating shaft 300 extends from the top wall 110 and is connected to the granulation disc 200, while the lower end extends from the bottom wall 120 and is connected to a drive component below the transmission box 100. The drive component drives the rotating shaft 300 to rotate, which in turn drives the granulation disc 200 to rotate. Both the top wall 110 and the bottom wall 120 are detachable. The fan blade 400 is located in the transmission box 100, mounted on the rotating shaft 300, and keyed to the rotating shaft 300. The rotating shaft 300 can also drive the fan blade 400 to rotate. In the transmission box 100, the nozzle of the atomizing component 500 is mounted on the circumferential sidewall between the top wall 110 and the bottom wall 120. The nozzle of the atomizing component 500 is evenly distributed along the circumference of the transmission box 100. The nozzle of the atomizing component 500 can spray cooling mist. An air outlet 111 and an air inlet 121 communicating with the interior of the transmission box 100 are respectively provided on the top wall 110 and the bottom wall 120. The air outlet 111 and the air inlet 121 are evenly distributed along the circumference of the rotating shaft 300. The air outlet 111 faces the granulation disk 200.

[0024] The atomizing assembly 500 may include an annular water collection pipe extending circumferentially along the transmission housing 100, a nozzle installed on and communicating with the annular water collection pipe, and a cooling water pipe. The cooling water pipe passes through the circumferential side wall of the transmission housing 100 and communicates with the annular water collection pipe. The cooling water pipe is also connected to a cooling water supply device through a cooling water interface. When the cooling water supply device is running, the cooling water passes through the cooling water pipe and the annular water collection pipe, and then sprays cooling mist from the nozzle.

[0025] Therefore, in this embodiment, an air outlet 111 and an air inlet 121 communicating with the transmission box 100 are respectively provided on the top wall 110 and bottom wall 120 of the transmission box 100. The air inlet 121 and the air outlet 111 enable the transmission box 100 to form a fluid flow channel in the vertical direction. The two ends of the rotating shaft 300 are rotatably connected to the top wall 110 and bottom wall 120 of the transmission box 100 respectively in the axial direction. The fan blade 400 is mounted on the rotating shaft 300, so that when the rotating shaft 300 drives the granulation disk 200 to rotate, it synchronously drives the fan blade 400 to rotate, so as to utilize the fan... The rotation of the blade 400 allows fluid outside the transmission box 100 to enter the transmission box 100 through the air inlet 121 and then flow to the granulation disk 200 through the air outlet 111. At the same time, the nozzle of the atomizing component 500 can spray cooling mist into the transmission box 100, further reducing the internal temperature of the transmission box 100, thereby reducing the temperature of the fluid flowing out of the air outlet 111. Furthermore, with the rotation of the blade 400, the fluid can exchange heat with the granulation disk 200 to reduce the temperature of the granulation disk 200, thereby reducing the impact of high temperature on the structure of the granulation disk 200.

[0026] Optionally, combined Figure 1 As shown, at least two fan blades 400 are distributed along the axial direction of the rotating shaft 300, and the curvature of the two fan blades 400 increases in the direction toward the air outlet 111.

[0027] Specifically, the greater the curvature of the fan blade 400, the stronger its effect on guiding fluid flow. Since the shaft 300 rotates at high speed during the granulation process, the curvature of the lower fan blade 400 can be relatively small to increase the flow rate of the fluid entering the transmission box 100, while the curvature of the upper fan blade 400 can be relatively large to improve the accuracy of the direction of fluid flow out of the transmission box 100.

[0028] In this way, by using at least two fan blades 400 distributed along the axial direction of the rotating shaft 300, and the curvature of the two fan blades 400 increasing in the direction toward the air outlet 111, not only can a multi-stage air cooling effect be achieved, but the high-speed rotation of the rotating shaft 300 itself can also be used to regulate the flow rate and direction of the fluid, so as to improve the air cooling effect of the fan blades 400.

[0029] Optionally, combined Figure 1 As shown, the fan blade 400 includes a guide flange 600, which is located on the end face of the fan blade 400 in the air delivery direction. The guide flange 600 extends along the rotation direction of the fan blade 400, and / or the guide flange 600 is located on the edge of the fan blade 400 away from its rotation axis. One end of the guide flange 600 is connected to the edge, and the other end is bent toward the air delivery direction.

[0030] Specifically, the airflow direction refers to the positive Z-axis direction. The guide flange 600 is located on the end face of the fan blade 400 in the airflow direction. One embodiment, such as... Figure 1 As shown in the upper middle fan blade 400, multiple guide flanges 600 are provided, each extending along the rotation direction of the fan blade 400. These multiple guide flanges 600 form a windbreak in the radial direction of the fan blade 400. Another embodiment, as... Figure 1 As shown in the lower middle fan blade 400, the guide flange 600 is located on the edge of the fan blade 400 away from its rotation axis 300. One end of the guide flange 600 is connected to the edge, and the other end is bent towards the air delivery direction. The guide flange 600 forms a windproof guard on the edge of the fan blade 400.

[0031] Thus, by having the guide flange 600 located on the end face of the fan blade 400 in the air delivery direction, the guide flange 600 extends along the rotation direction of the fan blade 400, and / or, the guide flange 600 is located on the edge of the fan blade 400 away from its rotation axis 300, one end of the guide flange 600 is connected to the edge, and the other end is bent toward the air delivery direction. The guide flange 600 can form a windproof guard plate in the radial direction of the fan blade 400, reducing the possibility of fluid loss in the radial direction of the fan blade 400, thereby improving the air cooling effect.

[0032] Optionally, combined Figure 1 As shown, the self-cooling centrifugal granulation equipment also includes an air inlet heat exchange coil 700, which is located inside the transmission box 100 and used to introduce heat exchange medium. The air inlet heat exchange coil 700 is connected to the bottom wall 120 and covers the air inlet hole 121. And / or, the air inlet heat exchange coil 700 is connected to the top wall 110 and covers the air outlet hole 111.

[0033] Specifically, exemplarily, the air inlet heat exchange coil 700 is disposed at the bottom of the transmission box 100. The air inlet heat exchange coil 700 can be connected to cooling water and covers the air inlet 121. The specific method of introducing cooling water into the air inlet heat exchange coil 700 is not required.

[0034] Thus, the heat exchange coil 700 is located inside the transmission box 100 and is used to introduce the heat exchange medium. The heat exchange coil 700 is connected to the bottom wall 120 and covers the air inlet 121. Or, the heat exchange coil 700 is connected to the top wall 110 and covers the air outlet 111. The heat exchange coil 700 can adaptively reduce the fluid temperature at the air inlet 121 or the air outlet 111, which not only improves the cooling effect of the granulation disk 200, but also cools the rotating shaft 300.

[0035] Optionally, combined Figure 1 As shown, the self-cooling centrifugal granulation equipment also includes an air duct 800. The air duct 800 is located at one end of the top wall 110 facing the granulation disk 200 and surrounds the air outlet 111. One end of the air duct 800 is connected to the top wall 110, and the other end extends toward the granulation disk 200, with a gap between them.

[0036] Specifically, the air duct 800 is installed at one end of the top wall 110 facing the granulation disk 200, that is, at the upper end of the top wall 110. The air outlet 111 is located within the area enclosed by the air duct 800. The lower end of the air duct 800 is connected to the top wall 110, and the upper end of the air duct 800 extends towards the granulation disk 200, with a gap between it and the granulation disk 200 to avoid interfering with the rotation of the granulation disk 200.

[0037] Thus, by having the air duct 800 located at one end of the top wall 110 facing the granulation disk 200 and surrounding the air outlet 111, the air duct 800 reduces direct heat exchange between the low-temperature fluid and the granulation environment, thereby achieving physical isolation. One end of the air duct 800 is connected to the top wall 110, and the other end extends towards the granulation disk 200, leaving a gap between them. The air duct 800 guides the low-temperature fluid, causing it to flow concentratedly towards the granulation disk 200. After concentrated heat exchange with the granulation disk 200, an upward annular air wall can be formed at the gap. The annular air wall can cool the granulated particles, improving the cooling of the granulation disk 200 and enhancing the granulation effect.

[0038] Optionally, combined Figure 1 As shown, the inner wall of the air duct 800 is provided with guide fins, which extend along the axial direction of the air duct 800 and are arranged at intervals along the circumference of the air duct 800.

[0039] Specifically, there are multiple guide fins, which are evenly distributed around the circumference of the air duct 800, and the length direction of each guide fin is consistent with the axial direction of the air duct 800.

[0040] Thus, by extending the guide fins along the axial direction of the air duct 800 and arranging them at intervals along the circumference of the air duct 800, the guide fins form multiple relatively independent fluid flow channels within the air duct 800, thereby improving the accuracy of the fluid flow direction and thus improving the cooling effect.

[0041] Optionally, the fan blade 400 is provided with a heat-resistant coating.

[0042] Specifically, the heat-resistant coating can be a heat-insulating coating made of high-temperature alloy materials, etc. The heat-resistant coating covers the fan blade 400, and the guide flange 600 mentioned above can also be made of high-temperature alloy materials.

[0043] Thus, by providing a heat-resistant coating to the fan blades 400, the service life of the fan blades 400 in high-temperature environments can be extended.

[0044] Optionally, combined Figure 1 As shown, the self-cooling centrifugal granulation equipment also includes temperature sensors, which are installed on the granulation disc 200, the air inlet 121 and the transmission box 100, and are used for communication connection with the host computer.

[0045] Specifically, the temperature sensor installed on the granulation disc 200 can provide real-time feedback on the actual temperature of the granulation disc 200 and transmit this temperature information to the host computer. The host computer can then determine whether to circulate water through the spray assembly 500 based on the feedback from the temperature sensor, thereby flexibly adjusting the cooling method of the granulation disc 200. The temperature sensor installed on the air inlet 121 can provide real-time feedback on the temperature of the fluid flowing through the air inlet 121. The host computer can then determine whether to circulate cooling water through the air outlet heat exchange coil 700 based on the feedback from the temperature sensor, thereby adjusting the temperature of the fluid flowing through the air inlet 121. The temperature sensor installed on the transmission box 100 can provide feedback on the temperature of the transmission box 100. The host computer can then determine whether to circulate water through the spray assembly 500 and the air outlet heat exchange coil 700 based on the feedback from the temperature sensor.

[0046] Thus, temperature sensors are installed on the granulation disc 200, the air inlet 121, and the transmission box 100, respectively, and are used to communicate with the host computer. This allows for easy adjustment of the cooling method based on the feedback information from the temperature sensors, thereby improving cooling flexibility.

[0047] Optionally, combined Figure 1 and Figure 2 As shown, the self-cooling centrifugal granulation equipment also includes a granulation chamber 900, which is covered by a transmission box 100. A guide pipe 910 is provided on the granulation chamber 900, which is aligned with the granulation disc 200. The granulation chamber 900 includes a granulation bed 920, which surrounds the transmission box 100. The granulation chamber 900 also includes a cold air inlet 930 provided on its side wall, a hot air outlet 940 provided on its top, and multiple air caps 950 provided on the granulation bed 920. The multiple air caps 950 are arranged along the slope direction of the granulation bed 920.

[0048] Specifically, the granulation chamber 900 is enclosed by a transmission box 100, meaning the transmission box 100 is located inside the granulation chamber 900. The granulation chamber 900 has a cylindrical structure with a steel outer shell frame. The inner wall outside the particle impact area is lined with a heat-resistant material of a specific thickness to prevent heat loss. A guide pipe 910 is installed at the top of the granulation chamber 900. Figure 1 As shown, the guide pipe 910 is coaxial with the granulation disc 200, allowing high-temperature molten material to flow into the granulation disc 200 through the guide pipe 910. A granulation bed 920 is arranged at the bottom of the granulation chamber 900, surrounding the transmission box 100. The end of the granulation bed 920 facing the transmission box 100 is sloped downwards to allow granulated particles to flow out from the discharge port at the bottom of the granulation chamber 900 along the granulation bed 920. Figure 1As shown, the granulation bed 920 is provided with multiple air caps 950, which are distributed at intervals along the slope of the granulation bed 920. The granulation chamber 900 is provided with a cold air inlet 930 and a hot air outlet 940 at the top of the granulation chamber 900. During the granulation process, the low-temperature fluid introduced through the cold air inlet 930 can flow upward through the multiple air caps 950 and form a low-temperature air curtain. The low-temperature air curtain can exchange heat with the granulated particles, thereby cooling the granulated particles and accelerating the granulation process. The fluid after heat exchange can flow out of the granulation chamber 900 through the hot air outlet 940 to maintain a relatively constant temperature in the granulation chamber 900. The high-temperature fluid flowing out from the hot air outlet 940 can be connected to the heat recovery system to realize the utilization of thermal energy.

[0049] Thus, the multiple air caps 950 set on the granulation bed 920 connect the cold air inlet 930 and the hot air outlet 940. During the granulation process, the multiple air caps 950 can form a low-temperature air curtain to accelerate the granulation process and improve the granulation effect. The high-temperature gas is then concentratedly discharged through the hot air outlet 940, which also facilitates heat recovery and improves energy utilization.

[0050] In some embodiments, the granulation chamber 900 also includes a finned feeder 960, which is located at the bottom outlet of the granulation chamber 900 and is driven to rotate by a motor. During the granulation process, the drive motor of the finned feeder 960 drives the finned feeder 960 to rotate under the command of the host computer. The finned feeder 960 has a stirring function to prevent the granulated particles from sticking and clogging, and also has a certain sealing function for the hot air inside the granulation chamber 900.

[0051] Optionally, the rotating shaft 300 is rotatably connected to the top wall 110 and the bottom wall 120 respectively via bearing seats, and the bearing seats are provided with multiple cold air exhaust channels extending along the axial direction of the rotating shaft 300.

[0052] Specifically, compared with traditional bearing housings, the bearing housing in this embodiment is provided with multiple cold air exhaust channels. These multiple cold air exhaust channels penetrate the bearing housing vertically and are evenly distributed along the circumference of the rotating shaft 300.

[0053] Thus, the rotating shaft 300 is rotatably connected to the top wall 110 and the bottom wall 120 respectively through the bearing housing, and multiple cold air exhaust channels extending along the axial direction of the rotating shaft 300 are provided on the bearing housing, so that the low temperature fluid can flow out from the bearing housing through the multiple cold air exhaust channels, thereby increasing the contact area between the bearing housing and the low temperature fluid, thereby further improving the cooling effect on the granulation disk 200 on the basis of cooling the bearing housing.

[0054] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A self-cooling centrifugal granulation device, characterized in that, The device includes a transmission housing (100), an atomizing assembly (500), a rotating shaft (300) that drives the atomizing disc (200) to rotate, and fan blades (400) mounted on the rotating shaft (300). The two axial ends of the rotating shaft (300) are rotatably connected to the top wall (110) and bottom wall (120) of the transmission housing (100), respectively. The atomizing disc (200) is located above the top wall (110). The fan blades (400) and the atomizing assembly (500) are located inside the transmission housing (100). The nozzles of the component (500) are distributed around the rotating shaft (300) and connected to the circumferential sidewall of the transmission box (100). The top wall (110) is provided with an air outlet (111) communicating with the transmission box (100), and the bottom wall (120) is provided with an air inlet (121) communicating with the transmission box (100). At least two fan blades (400) are distributed along the axial direction of the rotating shaft (300), and the curvature of the two fan blades (400) increases in the direction toward the air outlet (111).

2. The self-cooling centrifugal granulation equipment according to claim 1, characterized in that, The fan blade (400) includes a guide flange (600) located on the end face of the fan blade (400) in the air delivery direction. The guide flange (600) extends along the rotation direction of the fan blade (400), and / or the guide flange (600) is located on the edge of the fan blade (400) away from its rotation axis. One end of the guide flange (600) is connected to the edge, and the other end is bent toward the air delivery direction.

3. The self-cooling centrifugal granulation equipment according to claim 1, characterized in that, It also includes an air inlet heat exchange coil (700), which is located inside the transmission box (100) and used to introduce heat exchange medium. The air inlet heat exchange coil (700) is connected to the bottom wall (120) and covers the air inlet hole (121). And / or, the air inlet heat exchange coil (700) is connected to the top wall (110) and covers the air outlet hole (111).

4. The self-cooling centrifugal granulation equipment according to claim 1, characterized in that, It also includes an air shield (800), which is located at one end of the top wall (110) facing the granulation disk (200) and surrounds the air outlet (111). One end of the air shield (800) is connected to the top wall (110), and the other end extends toward the granulation disk (200) with a gap between it and the granulation disk (200).

5. The self-cooling centrifugal granulation equipment according to claim 4, characterized in that, The inner wall of the air duct (800) is provided with guide fins, which extend along the axial direction of the air duct (800) and are arranged at intervals along the circumference of the air duct (800).

6. The self-cooling centrifugal granulation equipment according to claim 1, characterized in that, The fan blades (400) are provided with a heat-resistant coating.

7. The self-cooling centrifugal granulation equipment according to claim 1, characterized in that, It also includes temperature sensors, multiple of which are respectively installed in the granulation disk (200), the air inlet and the transmission box (100) and are used for communication connection with the host computer.

8. The self-cooling centrifugal granulation equipment according to claim 1, characterized in that, It also includes a granulation chamber (900) which covers the transmission box (100). A guide pipe (910) is provided on the granulation chamber (900) and is aligned with the granulation disc (200). The granulation chamber (900) includes a granulation bed (920) which surrounds the transmission box (100). The granulation chamber (900) also includes a cold air inlet (930) on its side wall, a hot air outlet (940) on its top, and a plurality of air caps (950) on the granulation bed (920). The plurality of air caps (950) are arranged along the slope direction of the granulation bed (920).

9. The self-cooling centrifugal granulation equipment according to claim 1, characterized in that, The rotating shaft (300) is rotatably connected to the top wall (110) and the bottom wall (120) respectively through bearing seats. The bearing seats are provided with multiple cold air exhaust channels extending axially along the rotating shaft (300).

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