A granulator system with enhanced thermal protection and granulation and crushing effects

Abstract

The present invention discloses a granulator system with enhanced thermal protection and granulation and crushing effects. The system comprises a symmetrically divided granulator device connected to a granulator transmission system via a rotating shaft equipped with a rotating shaft cooling system. An internal granulator flow channel is provided within the granulator device, connected to a granulator rotary ventilation system. The granulator rotary ventilation system uses side or center air intake to cool the granulator device. The present invention allows for flexible granulator system layout, enhanced granulator thermal protection, enhanced crushing effects during the granulation process, facilitates disassembly of the granulator and guide cone, improves waste heat recovery efficiency, extends the service life of the granulator, enhances granulation effectiveness, and satisfies the resource utilization of slag.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste heat recovery of high-temperature liquid slag, and in particular relates to a granulator system with enhanced thermal protection and granulation and crushing effects. Background Art

[0002] High-temperature liquid slag (1450-1550°C blast furnace slag, steel slag, etc.), which accounts for 35% of the steel industry's total waste heat resources, is almost exclusively treated using water quenching. This results in significant waste of high-quality waste heat, consumption of precious water resources, and the emission of sulfides such as SO2 and H2S. Dry centrifugal granulation offers high waste heat recovery efficiency, small and uniform slag particles, a high degree of vitrification, and low energy consumption, making it a promising high-temperature liquid slag treatment process.

[0003] Currently, dry centrifugal granulation technology presents the following challenges in the liquid slag granulation process. First, due to the limited space available for the smelting furnace, the equipment should not be too large. Limited heat exchange space impacts waste heat recovery efficiency. Granulator systems are often installed too high, requiring considerable space for disassembly and maintenance beneath the granulator. This significantly occupies space for granulation and subsequent heat exchange. Furthermore, the maintenance access in the middle of the granulation bin separates the heat exchange space for the entire granule flight, impacting the granule flight trajectory and waste heat recovery efficiency. To more efficiently recover the liquid slag's waste heat, additional heat exchange space is required, which in turn places corresponding demands on the granulator system's installation. First, the granulator system must be flexible and space-constrained. Second, in industrial applications, the high flow rate and high temperature of the smelting slag, when in contact with the granulator surface, can easily cause oxidative corrosion and other issues. This shortens the granulator's lifespan and makes it unsuitable for long-term, continuous granulation. When the flow rate is too high, a thick liquid film tends to form at the edge of the granulator, resulting in large and uneven droplets. This requires increased disturbance to break up the liquid film. Current research has shown that installing a guide cone at the center of the granulator can divert and buffer the slag, while also increasing the flow area on the granulator surface and thinning the liquid slag. This facilitates the granulation of smaller particles, enhances the granulation and fragmentation process, and facilitates subsequent heat exchange and tailings product resource utilization. However, due to the complexity and diversity of slag discharge during the smelting process, achieving a stable and uniform slag discharge temperature, composition, and flow rate is difficult. This necessitates constant adjustment of the granulator equipment's operating parameters and the granulator's material to minimize equipment wear and tear, ensure personnel safety, and efficiently recover heat while realizing the comprehensive utilization value of the tailings. Therefore, a new granulator system is urgently needed that is compact, high-strength, and increases heat exchange efficiency while also allowing for rapid installation and replacement of the granulator. The appropriate granulator can be selected for different slag discharge parameters to ensure efficient and safe system operation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide a granulator system with enhanced thermal protection and granulation and crushing effects, so as to solve the technical problems that the granulator system occupies too much heat exchange space, resulting in low waste heat recovery efficiency, short granulator life, low adaptability of the centrifugal granulation process to large flow slag, and difficulty in replacing and disassembling the guide cone.

[0005] The present invention adopts the following technical solutions:

[0006] A granulator system with enhanced thermal protection and granulation and crushing effects includes a granulator device with a symmetrical block structure, the granulator device is connected to a granulator transmission system via a rotating shaft, a rotating shaft cooling system is provided on the rotating shaft, a granulator internal flow channel is provided inside the granulator device, the granulator internal flow channel is connected to a granulator rotary ventilation system, and the granulator rotary ventilation system adopts a side air intake or a middle air intake method to cool the granulator device.

[0007] Specifically, the granulator device includes a granulator body, which is arranged in a granulator support frame. The granulator body and the granulator support frame are fixedly connected by a first fastening device. The internal flow channel of the granulator is arranged in the granulator support frame. An air outlet of the internal flow channel of the granulator is provided at one end of the internal flow channel of the granulator.

[0008] Furthermore, a guide cone is provided on the granulator body, and corresponding segmented embedded parts are provided on the granulator support frame.

[0009] Furthermore, the granulator support frame is connected to the support frame at one end of the rotating shaft through a second fastening device, and an air insulation layer is provided between the granulator support frame and the rotating shaft.

[0010] Furthermore, the granulator rotary ventilation system includes a rotary ventilation device, which is arranged on a rotating shaft, and is provided with a rotary temperature measuring device and a rotary ventilation device cooling air inlet. The rotary ventilation device is connected to the internal flow channel of the granulator through the rotating flow channel and the internal cooling air inlet of the granulator.

[0011] Furthermore, the granulator support frame is connected to one end of the rotating shaft through threads and is fixed by a third fastening device.

[0012] Furthermore, the granulator rotary ventilation system includes an external rotating device, which is connected to one end of the middle flow channel of the rotating shaft arranged inside the rotating shaft through the air outlet of the external rotating device, and the other end of the middle flow channel of the rotating shaft is connected to the internal flow channel of the granulator through the middle air outlet of the rotating shaft or the middle side wall air outlet of the rotating shaft.

[0013] Specifically, the shaft cooling system includes a shaft cooling air duct, the shaft is arranged in the shaft cooling air duct, a cooling air inlet is provided on the shaft cooling air duct at one end close to the gear box, a bearing is provided between the end of the shaft close to the granulator device and the shaft cooling air duct, and a shaft cooling air outlet is provided on the bearing.

[0014] Specifically, the granulator transmission system includes a motor, which is connected to one end of the rotating shaft via a gear box. A horizontal gear and a vertical gear are meshed in the gear box. The horizontal gear is connected to the motor through the horizontal rotating shaft, and the vertical gear is connected to one end of the rotating shaft.

[0015] Specifically, the granulator transmission system is arranged in the maintenance space, and the maintenance space is arranged inside the centrifugal granulation system.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] The present invention provides a granulator system with enhanced thermal protection and granulation and crushing effects. The rotating shaft connected to the granulator is shortened, and the drive shaft and the motor are placed horizontally via a transverse transmission device, thereby greatly shortening the height of the granulator system and facilitating maintenance of the drive system and the motor. A granulator rotary ventilation system is added to the drive shaft and connected to a cooling flow channel at the bottom of a rotor cup via a connecting device, so that cooling air can enter a granulator support frame through the drive shaft to cool the granulator, thereby preventing overheating of the granulator, the granulator support frame and the rotating shaft, and improving system stability.

[0018] Furthermore, the granulator body is disposed within the granulator support frame, preventing the granulator body from breaking due to impact or thermal stress. The granulator body and the granulator support frame are fixedly connected via a first fastening device, allowing the granulator body and the support frame to fit snugly together, thereby facilitating heat transfer from the granulator body to the granulator support frame and preventing the granulator from shaking during rotation. The granulator internal flow channel is disposed within the granulator support frame, with an internal flow channel outlet disposed at one end. This allows cooling fluid to flow through the interior of the granulator support frame, creating a centrally symmetrical flow field. This effectively reduces circumferential thermal stress and ensures more uniform stress distribution within the granulator.

[0019] Furthermore, the guide cone can reduce the direct impact of the slag flow on the turntable when it falls, but the traditional molding scheme easily generates strong thermal stress at the root of the guide cone, causing it to fall off. After adopting the block embedded parts, the guide cone can be prevented from falling off under thermal stress. A guide cone with embedded metal components is installed on the rotor cup. The guide cone is connected to the granulator through a metal base. During operation, the heat on the guide cone is cooled by the wind in the cavity at the bottom of the granulator support frame, thereby strengthening the fixing effect of the guide cone and extending its working life. The guide cone with a metal base is also easy to connect to the bottom of the rotor cup, which greatly improves the convenience of installing the guide cone.

[0020] Furthermore, the granulator support frame is connected to the support frame at one end of the rotating shaft through a second fastening device, and an air insulation layer is provided between the granulator support frame and the rotating shaft. Therefore, the heat of the granulator device will be transferred to the rotating shaft, and the heat transferred between the rotating shaft and the support frame can be efficiently cooled by the air flowing in the air insulation layer, thereby reducing the temperature of the rotating shaft.

[0021] Furthermore, the rotary ventilation device, the rotary temperature measuring device, and the rotary ventilation device are connected to the internal flow channel of the granulator through the internal cooling air inlet of the granulator via the rotary flow channel; the rotary air supply can achieve uniform cooling of the interior of the granulator, reduce the operating temperature of the granulator, and reduce thermal stress; the rotary temperature measuring device can effectively control the internal temperature of the granulator, and facilitate timely adjustment of the cooling air volume to ensure safe operation of the device; by connecting the cooling flow channel inside the granulator with the flow channel of the cooling shaft, the granulator can be effectively cooled, and the symmetrically divided block arrangement of the granulating device is convenient for disassembly and replacement, thereby enabling better maintenance.

[0022] Furthermore, the granulator support frame is connected to one end of the rotating shaft through a threaded connection and fixed by a third fastening device, which can effectively increase the strength of the granulator, prevent the rotating shaft from bending, falling off or shaking during the granulation process, which can be an unsafe factor, and ensure the stability of the equipment operation.

[0023] Furthermore, the external rotating device is connected to one end of the middle flow channel of the rotating shaft arranged inside the rotating shaft through the air outlet of the external rotating device, and the other end of the middle flow channel of the rotating shaft is connected to the internal flow channel of the granulator through the middle air outlet of the rotating shaft or the middle side wall air outlet of the rotating shaft, so as to realize a variety of air supply modes, thereby ensuring that the cooling air plays a role in cooling the bearings and reducing the thermal stress of the device.

[0024] Furthermore, the rotating shaft is arranged in a rotating shaft cooling air duct, a cooling air inlet is provided on the rotating shaft cooling air duct at one end close to the gear box, a bearing is provided between the end of the rotating shaft close to the granulator device and the rotating shaft cooling air duct, and a rotating shaft cooling air outlet is provided on the bearing. This air duct arrangement can efficiently cool the bearing, and air supply from below can effectively cool the entire rotating shaft of the granulator, and facilitates the installation of the air supply device.

[0025] Furthermore, the motor is connected to one end of the rotating shaft via a gear box, a horizontal gear and a vertical gear are meshed and connected inside the gear box, the horizontal gear is connected to the motor through a horizontal rotating shaft, and the vertical gear is connected to one end of the rotating shaft, so that the motor can be arranged horizontally and the height of the granulator can be reduced. At the same time, the motor is arranged outside the granulating device, which is convenient for motor maintenance.

[0026] Furthermore, the maintenance space is provided inside the centrifugal granulation system, which enables rapid maintenance and timely replacement of the transmission device and the granulator.

[0027] In summary, the present invention can effectively solve the technical problems of the granulator system occupying too much heat exchange space, resulting in low waste heat recovery efficiency, short granulator life, low adaptability of the centrifugal granulation process to large flow slag, and difficulty in replacing and disassembling the guide cone.

[0028] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the granulator system of the present invention;

[0030] Figure 2 is an enlarged schematic diagram of the granulator device of the present invention;

[0031] Figure 3 is a schematic diagram of the supplementary structure of the granulator system of the present invention;

[0032] Figure 4 It is an enlarged schematic diagram of the supplementary structure of the granulator device of the present invention;

[0033] Figure 5 Schematic diagram of the dry centrifugal granulation system in which the granulator system of the present invention is located.

[0034] Wherein: 1. Granulator device; 2. Rotating temperature measuring device; 3. Rotating ventilation device; 4. Bearing; 5. Shaft cooling air duct; 6. Rotating shaft; 7. Shaft cooling air inlet; 8. Motor; 9. Granulator internal cooling air inlet; 10. Rotating flow channel; 11. Rotating ventilation device cooling air inlet; 12. Shaft cooling air outlet; 13. Vertical gear; 14. Gear box; 15. Horizontal gear; 16. Granulator internal flow channel outlet; 17. First fastening device; 18. Guide cone; 19. Granulator Granulator body; 20. Granulator support frame; 21. Block embedded parts; 22. Second fastening device; 23. Support frame; 24. First flow channel; 25. Second flow channel; 26. Horizontal rotating shaft; 27. Granulator maintenance space; 28. Centrifugal granulation system; 29. ​​External rotating device; 30. Air outlet in the middle of the rotating shaft; 31. Flow channel in the middle of the rotating shaft; 32. Air outlet on the side wall in the middle of the rotating shaft; 33. Air insulation layer; 34. Air outlet of the external rotating device; 35. Thread; 36. Third fastening device. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0038] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0039] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0040] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0041] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0042] The present invention provides a granulator system with enhanced thermal protection and granulation and crushing effects. The granulator system can be flexibly arranged, the thermal protection of the granulator is enhanced, the crushing effect of the granulation process is enhanced, the granulator and the guide cone are easily disassembled, the waste heat recovery efficiency is improved, the service life of the granulator is extended, the granulation effect is improved, and the resource utilization of slag is met.

[0043] See also Figure 1 and Figure 2The present invention provides a granulator system with enhanced thermal protection and granulation and crushing effects, comprising: a granulator transmission system, a shaft cooling system, a granulator rotary ventilation system and a granulator device 1; the granulator transmission system is connected to the granulator device 1 through a shaft 6, the shaft cooling system is connected to the shaft 6, and the granulator rotary ventilation system is arranged on the granulator device 1.

[0044] The granulator transmission system includes a motor 8, a gearbox 13, a rotating shaft 6, a bearing 4, and a granulator-rotating shaft connection portion. The motor 8 is connected to the input end of the gearbox 13 via a horizontal rotating shaft 26, the output end of the gearbox 13 is connected to one end of the rotating shaft 6, and the other end of the rotating shaft 6 is connected to the granulator device 1 via a granulator-rotating shaft connection portion.

[0045] Among them, a horizontal gear 15 and a vertical gear 13 are provided in the gear box 13, one end of the horizontal rotating shaft 26 is connected to the horizontal gear 15, the horizontal gear 15 is meshed with the vertical gear 13 at 90 degrees, and is connected to one end of the rotating shaft 6 through the vertical gear 13, which is used to realize the direction change of the rotating shaft to arrange a reasonable transmission system to adapt to different spaces.

[0046] The connection portion between the granulator and the rotating shaft includes a support frame 23 , which is connected to the granulator support frame 20 and is fastened by a second fastening device 22 .

[0047] See also Figure 5 The gear box 13 and the motor 8 are arranged in the maintenance space 27, and the maintenance space 27 is arranged inside the centrifugal granulation system 28. The placement positions of the horizontal rotating shaft 26 where the horizontal gear 15 is located and the motor 8 are flexible, including but not limited to inside the maintenance space 27 of the centrifugal granulation system, outside the centrifugal granulation system 28, etc., and reasonable devices can be arranged on the upper part, including but not limited to bearings, rotating shaft sleeves, etc., to adapt to different granulation spaces.

[0048] The granulator device 1 includes a granulator body 19 and a granulator support frame 20. The granulator body 19 is disposed within the granulator support frame 20 and is fixedly connected to the granulator body 19 and the granulator support frame 20 via a first fastening device 17, which includes but is not limited to a clamp. A guide cone 18 is provided on the granulator body 19 for buffering slag and thinning the liquid level. An internal flow channel (a first flow channel 24 or a second flow channel 25) is provided within the granulator support frame 20. An air outlet 16 is provided at the end of the internal flow channel for controlling the air flow rate, direction, and form. A segmented embedded component 21 is provided on the upper portion of the granulator support frame 20. The segmented embedded component 21 has an upwardly protruding portion fixedly connected to the bottom of the guide cone 18, making the guide cone easy to install and remove.

[0049] The granulator device 1 is a symmetrical block structure, and the block embedded parts 21 match it.

[0050] The granulator body 19 is made of materials with high toughness, high temperature resistance, strong oxidation resistance, and resistance to blast furnace slag corrosion, which are used to increase the service life of the granulator, including but not limited to ceramics, corundum and other materials;

[0051] The shaft cooling system is used to cool the shaft 6, and includes a cooling air inlet 7, a shaft cooling air duct 5, and a shaft cooling air outlet 12. The shaft 6 is disposed in the shaft cooling air duct 5. A bearing 4 is disposed between the end of the shaft 6 close to the granulator device 1 and the shaft cooling air duct 5. The shaft cooling air outlet 12 is disposed on the bearing 4. The cooling air inlet 7 is disposed on the end of the shaft cooling air duct 5 close to the gear box 14.

[0052] The granulator rotary ventilation system includes a rotary ventilation device 3, an internal flow channel of the granulator, and an air outlet 16 of the internal flow channel of the granulator; the rotary ventilation device 3 is arranged on the rotating shaft 6 near the bearing 4, and a rotary ventilation device cooling air inlet 11 is provided on the rotary ventilation device 3. The rotary ventilation device 3 is mounted on the rotating shaft 6, and the interior of the rotary ventilation device 3 is connected to the first flow channel 24 of the internal flow channel of the granulator through the rotary flow channel 10 and the internal cooling air inlet 9 of the granulator.

[0053] The rotary ventilation device 3 rotates at the same speed as the rotating shaft 6 to ventilate the internal flow channel of the granulator device 1; the rotary ventilation device 3 is resistant to high temperatures, and its installation position includes but is not limited to the upper part or the outside of the rotating shaft, and air is introduced into the internal flow channel of the granulator through the rotating flow channel 10.

[0054] There are two ways to fix the granulator device 1 and the rotating shaft 6 under high-speed rotation:

[0055] Connection method 1: The interior of the granulator support frame 20 is provided with a first flow channel 24, and the end of the first flow channel 24 is provided with a granulator internal flow channel air outlet 16. The lower part of the granulator support frame 20 extends to the left and right sides and is vertically fixedly connected to the support frames 23 on both sides of one end of the rotating shaft 6 through the second fastening device 22. The lower part of the granulator support frame 20 is provided with an air insulation layer 33 to reduce heat conduction to the rotating shaft. The other end of the first flow channel 24 is respectively connected to the granulator internal cooling air inlet 9 and the air outlet 32 ​​on the middle side wall of the rotating shaft. Figure 1 and Figure 2 shown.

[0056] Connection method 2: The granulator support frame 20 is fixed to the rotating shaft 6 by a thread 35 and a third fastening device 36 is used to align and fix them. A second flow channel 25 is provided at the connection between the lower part of the granulator support frame 20 and the rotating shaft 6. Figure 3 and Figure 4 shown.

[0057] Rotary ventilation methods include but are not limited to the following three:

[0058] Rotary ventilation method 1: The rotary ventilation device 3 is installed on the upper part of the rotating shaft 6. The cooling air in the rotating shaft cooling air duct 5 enters the rotating ventilation device 3 from the rotating shaft cooling air outlet 12 through the rotating ventilation device cooling air inlet 11, and then enters the internal flow channel of the granulator device 1 through the rotating flow channel 10 through the granulator internal cooling air inlet 9. Figure 1 shown.

[0059] Rotary ventilation method 2: The rotary ventilation device 3 is installed on the upper part of the rotating shaft 6. The cooling air in the rotating shaft cooling air duct 5 enters the rotating ventilation device 3 from the rotating shaft cooling air outlet 12 through the rotating ventilation device cooling air inlet 11, and then enters the internal flow channel of the granulator through the rotating flow channel 10 through the air outlet 32 ​​on the side wall of the middle part of the rotating shaft. Figure 2 shown.

[0060] Rotary ventilation mode three: a central flow channel 31 is provided inside the rotating shaft 6, one end of the central flow channel 31 is connected to the external rotating device 29 via the external rotating device outlet 34, the external rotating device 29 is provided outside the gear box 14, and the other end of the central flow channel 31 is connected to the second flow channel 25 of the internal flow channel of the granulator via the central air outlet 30 of the rotating shaft, as shown in FIG. Figure 3 and Figure 4 shown.

[0061] The air inlet type of the internal flow channel of the granulator includes but is not limited to the side air inlet or the middle air inlet of the granulator support frame 20.

[0062] The air outlet forms of the air outlet 16 of the internal flow channel of the granulator include but are not limited to slits with changeable directions and nozzles with different apertures and different numbers of small holes.

[0063] A rotary temperature measuring device 2 is provided on the upper portion of the rotary ventilation device 3. The rotary temperature measuring device 2 is provided between the rotary ventilation device 3 and the support frame 23 and rotates synchronously with the rotating shaft 6 for measuring the temperature at different rotational positions.

[0064] In the granulator system of the present invention, enhanced thermal protection for the granulator assembly 1 includes material selection and internal ventilation. During centrifugal granulation, high-temperature molten slag falls from the slag outlet onto the surface of the granulator assembly 1. It is diluted and buffered by the guide cone 18 and, under the action of centrifugal force, granulates at the edge of the granulator assembly 1, emitting fine droplets in all directions. During this process, the granulator assembly 1 exchanges heat with the high-temperature molten slag. The granulator assembly 1 is protected by materials that are resistant to high temperatures, oxidation, and corrosion. Furthermore, internal ventilation further reduces the surface temperature of the granulator.

[0065] The gear box 14 is used to change the direction of the rotating shaft. At the same time, the horizontal gear 15 cooperates with the vertical gear 13 to adapt to motors of different powers. It is convenient to adjust the height of the rotating shaft in the vertical direction, so that the granulator system can be flexibly arranged, the installation space of the granulator can be reduced, the heat exchange space can be increased, and the waste heat recovery efficiency can be improved.

[0066] A rotary ventilation device 3 is used to ventilate the internal flow channel of the granulator device 1. On the one hand, the granulator device 1 itself is cooled, the thermal protection is enhanced, and the service life is extended; on the other hand, for the centrifugal granulation of large-flow slag in industrial applications, an annular wind is set at the edge of the granulator to increase wind quenching disturbance on the liquid film or liquid filaments, thereby enhancing the granulation and crushing effect.

[0067] The granulator of the present invention is centrally mounted with a guide cone 18, which cushions the slag and increases the flow area on the surface of the granulator 1, thinning the liquid slag. This facilitates the granulation of smaller particles, enhances the granulation and crushing effect, and facilitates subsequent heat exchange and resource utilization. The support portion of the granulator 1 is equipped with a segmented embedded component 21, which cooperates with the guide cone 18 and is threadedly connected to the granulator support frame 20, facilitating the replacement and removal of the guide cone.

[0068] That is, the granulator system of the present invention can enhance the heat protection and granulation and crushing effects, and at the same time, the entire granulator system can be flexibly arranged for different granulation spaces.

[0069] In summary, the present invention provides a granulator system with enhanced thermal protection and granulation and crushing effects, which effectively solves the technical problems of the granulator system occupying too much heat exchange space, resulting in low waste heat recovery efficiency, short granulator life, low adaptability of the centrifugal granulation process to large flow rates of slag, and difficulty in replacing and disassembling the guide cone.

[0070] The above content is only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A granulator system with enhanced thermal protection and granulation and crushing effects, characterized in that: The invention comprises a granulator device (1) having a symmetrical block structure, wherein the granulator device (1) is connected to a granulator transmission system via a rotating shaft (6), a rotating shaft cooling system is provided on the rotating shaft (6), a granulator internal flow channel is provided inside the granulator device (1), the granulator internal flow channel is connected to a granulator rotary ventilation system, and the granulator rotary ventilation system adopts a side air intake or a middle air intake method to cool the granulator device (1); The granulator device (1) comprises a granulator body (19), the granulator body (19) is arranged in a granulator support frame (20), the granulator body (19) and the granulator support frame (20) are fixedly connected via a first fastening device (17), an internal flow channel of the granulator is arranged in the granulator support frame (20), and an internal flow channel air outlet (16) of the granulator is provided at one end of the internal flow channel of the granulator; The granulator support frame (20) is connected to the support frame (23) at one end of the rotating shaft (6) through a second fastening device (22); an air insulation layer (33) is provided between the granulator support frame (20) and the rotating shaft (6); the granulator rotary ventilation system includes a rotary ventilation device (3); the rotary ventilation device (3) is provided on the rotating shaft (6); a rotary temperature measuring device (2) and a rotary ventilation device cooling air inlet (11) are provided on the rotary ventilation device (3); the rotary ventilation device (3) is connected to the internal flow channel of the granulator through the rotary flow channel (10) and the internal cooling air inlet (9) of the granulator; The granulator support frame (20) is connected to one end of the rotating shaft (6) through a thread (35) and fixed by a third fastening device (36). The granulator rotary ventilation system includes an external rotating device (29). The external rotating device (29) is connected to one end of a rotating shaft middle flow channel (31) provided inside the rotating shaft (6) through an external rotating device air outlet (34). The other end of the rotating shaft middle flow channel (31) is connected to the internal flow channel of the granulator through a rotating shaft middle air outlet (30) or a rotating shaft middle side wall air outlet (32).

2. The granulator system with enhanced thermal protection and granulation and crushing effects according to claim 1, characterized in that: A guide cone (18) is provided on the granulator body (19), and a segmented embedded part (21) is correspondingly provided on the granulator support frame (20).

3. The granulator system with enhanced thermal protection and granulation and crushing effects according to claim 1, characterized in that: The shaft cooling system includes a shaft cooling air duct (5), a shaft (6) is arranged in the shaft cooling air duct (5), a cooling air inlet (7) is provided on one end of the shaft cooling air duct (5) close to the gear box (14), a bearing (4) is provided between one end of the shaft (6) close to the granulator device (1) and the shaft cooling air duct (5), and a shaft cooling air outlet (12) is provided on the bearing (4).

4. The granulator system with enhanced thermal protection and granulation and crushing effects according to claim 1, characterized in that: The granulator transmission system includes a motor (8), which is connected to one end of a rotating shaft (6) via a gear box (14), a horizontal gear (15) and a vertical gear (13) are meshedly connected in the gear box (14), the horizontal gear (15) is connected to the motor (8) via a horizontal rotating shaft (26), and the vertical gear (13) is connected to one end of the rotating shaft (6).

5. The granulator system with enhanced thermal protection and granulation and crushing effects according to any one of claims 1 to 4, characterized in that: The granulator transmission system is arranged in the maintenance space (27), and the maintenance space (27) is arranged inside the centrifugal granulation system (28).

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