Efficient cooling device for rotary kiln wheel belt

Abstract

The utility model relates to the technical field of heat dissipation of rotary kilns, in particular to an efficient cooling device for a rotary kiln wheel belt, which comprises a main pipe used for being connected with a cooling air source, the main pipe extends towards the wheel belt and is connected with two branch pipes, and the two branch pipes are respectively positioned on two sides of the wheel belt and are connected with an air storage box used for air outlet. A plurality of air outlet pieces are arranged on the air storage box at intervals along the circumference of the wheel belt, and air outlets are formed in the air outlet pieces and used for outputting cooling air towards the wheel belt. Cooling air flow is transmitted through the main pipe, the cooling air flow is guided to the wheel belt through the branch pipe and the air storage box, the cooling air flow is blown towards the wheel belt through the air storage piece, and therefore cooling of the wheel belt is achieved. The structure can be matched with the structure of the rotary kiln, the cooling effect is guaranteed, and long-time stable operation of the rotary kiln and the wheel belt is guaranteed; meanwhile, the device is simple in structure and easy to implement.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln heat dissipation technology, specifically to a high-efficiency cooling device for rotary kiln belts. Background Technology

[0002] Rotary kilns are crucial calcination equipment in cement clinker production lines, and the rotary kiln tire plays a vital role in their stable operation. The tire transfers the entire weight of the kiln to the support rollers, thus supporting the kiln shell; it also increases the rigidity of the kiln shell. Rotary kiln tires are typically loose-fitting floating tires with a smooth inner surface, loosely fitted onto the kiln shell's support plate. A certain gap, known as the tire clearance, is maintained between the support plate and the tire. The tire clearance significantly impacts the operation of the rotary kiln. If the tire clearance is too small, the tire is tightly clamped to the kiln, causing uneven thermal expansion and potentially resulting in a "neck" where the diameter of the shell at the tire is smaller than other parts, leading to breakage or even detachment of the refractory bricks at the tire. Conversely, if the tire clearance is too large, the weight of the refractory bricks, materials, and the shell itself can cause the circular cross-section of the shell to become elliptical, similarly affecting refractory brick breakage and detachment. Furthermore, it increases the relative slippage between the tire and the shell, accelerating the wear of the support plate.

[0003] During the operation of a rotary kiln, the clearance of the rotary kiln tire inevitably changes due to wear, temperature changes, and other reasons, which seriously affects the safe operation of the rotary kiln. The most suitable method to control the tire clearance within a suitable range is to use air cooling to control the temperature at the tire clearance.

[0004] Most tire cooling ducts currently use a multi-claw design. To achieve more cooling points, a branch pipe is extended from the top and bottom of the horizontal duct. This results in a large footprint for the ductwork, and the spacing between the three branch pipes is also quite large, failing to provide even cooling to the tire clearance. Because of the large space occupied by each branch pipe in the multi-claw design, the air outlet is placed a considerable distance horizontally from the tire, leading to poor cooling performance.

[0005] It is evident that the current rotary kiln tire air-cooling structure still has room for improvement and should be optimized. This could be achieved by rationally setting the cooling points for even distribution and bringing the air outlet closer to the tire horizontally, thus achieving better cooling performance. Therefore, a more reasonable technical solution should be proposed to address the existing technical problems. Utility Model Content

[0006] To overcome at least one of the aforementioned defects, this utility model proposes a high-efficiency cooling device for rotary kiln tires, which allows the cooling air to be distributed more evenly at the tire and the air outlet to be closer to the cooling point, thereby better cooling the tire gap and keeping the tire gap within a good range during the operation of the rotary kiln, which is conducive to the long-term stable operation of the rotary kiln.

[0007] To achieve the above objectives, the cooling device disclosed in this utility model can adopt the following technical solution:

[0008] A high-efficiency cooling device for rotary kiln tires includes a main pipe for connecting to a cooling air source, the main pipe extending toward the tire and connecting to two branch pipes, the two branch pipes being located on both sides of the tire and connected to an air storage box for air outlet, the air storage box having a plurality of air outlets spaced along the circumference of the tire, the air outlets having air outlets for outputting cooling air toward the tire.

[0009] The aforementioned cooling device guides the airflow through the main pipe, which then delivers the cooling airflow to the branch pipe. The air outlets on the air storage box connected to the branch pipe blow air towards both sides of the tire for cooling. Since the air outlets are arranged along the circumference of the tire, the cooling effect can be greatly guaranteed, and the structure of the entire cooling device can be simplified.

[0010] Furthermore, during cooling, excessive noise needs to be avoided. This can be achieved through various noise reduction structures, and is not limited to one. Here, we optimize and propose one feasible option: a silencer is installed at the air inlet of the main pipe. When using the above solution, the silencer can eliminate noise from the cooling air source, reducing noise during external air supply.

[0011] Furthermore, the main pipe's structure primarily serves to transport airflow. After connecting multiple branch pipes, it needs to balance the airflow direction. Airflow distribution is achieved through branching, and various distribution structures can be adopted; the structure is not limited to a single one. Here, we optimize and propose one feasible option: the main pipe includes a straight air-distribution section, and the branch pipes connect to the end of the air-distribution section. An air-distribution structure is provided at the front of the air-distribution section to guide and distribute the airflow within the main pipe to the two branch pipes. With this scheme, the airflow automatically diverts into the branch pipes upon encountering the air-distribution structure after entering the air-distribution section; simultaneously, the straightness of the air-distribution section facilitates the connection and installation of branch pipes.

[0012] Furthermore, the air distribution structure can take various forms, and its structure is not limited to a single one. Here, we optimize and propose one feasible option: the air distribution structure includes an air distribution plate, which divides the inner cavity of the air outlet section into a left cavity and a right cavity, and the left cavity and the right cavity are each connected to a branch pipe. When adopting the above scheme, the air distribution plate can be a single plate that directly separates the airflow; or it can be set as a conical plate according to the number of branch pipes to guide the airflow to the direction of the branch pipes.

[0013] Furthermore, the branch pipe, acting as an airflow distribution structure, connects to the air storage box at its rear via a transitional connecting pipe: the front end of the branch pipe connects to the air distribution section, and the rear end of the branch pipe connects to the air storage box via a circular-to-square channel section. In this configuration, the circular end of the circular-to-square channel connects to the branch pipe, and the square end connects to the air storage box.

[0014] Furthermore, the branch pipes are symmetrically arranged on both sides of the air distribution section.

[0015] Furthermore, the structure of the air storage box can be adjusted to better fit the rotary kiln and tire structure, improving heat dissipation. Its structure is not limited to a single design; one feasible option is proposed here: the air storage box includes an arc-shaped body that fits against the outer surface of the rotary kiln. With this design, the air storage box is generally curved. In other designs, an arc-shaped surface conforming to the rotary kiln surface can be provided on the air storage box, with the air outlet positioned circumferentially and corresponding to the tire.

[0016] Furthermore, the air outlet is used to release the gas inside the air tank outwards, providing cooling airflow towards the tire, thereby reducing the tire temperature and achieving temperature control. The air outlet can be constructed in various forms, and its structure is not limited to a single one. Here, we optimize and propose one feasible option: the air inlet of the air outlet is connected to the housing, and an air outlet duct is formed inside the air outlet, with the inner diameter of the air outlet duct gradually decreasing from the air inlet to the air outlet. When adopting the above scheme, the air outlet can be constructed into a duckbill-shaped structure.

[0017] Furthermore, the higher the airflow velocity, the better the cooling effect formed by the airflow through the tire. Therefore, the structure of the air outlet is adjusted, and one feasible option is proposed: the air outlet includes a long strip-shaped air outlet gap.

[0018] Furthermore, the main pipe receives cooling airflow from the cooling air source, and the delivery channel needs to maintain airtightness. Therefore, the connection structure at the lower end of the main pipe can adopt various structures, and its structure is not limited to one. Here, we optimize and propose one feasible option: the lower end of the main pipe is also connected to a square-to-round air inlet connector. The square port of the air inlet connector connects to the cooling air source, and the round port of the air inlet connector connects to the main pipe. When adopting the above scheme, a sealing structure is provided at both the square port and the round port.

[0019] Compared with the prior art, some of the beneficial effects of the technical solution disclosed in this utility model include:

[0020] This invention transmits cooling airflow through a main pipe, while branch pipes and an air storage box guide the cooling airflow to the tire. The air storage component then directs the cooling airflow towards the tire, thereby cooling the tire. This invention's structure is compatible with the rotary kiln structure, ensuring effective cooling and guaranteeing stable operation of the rotary kiln and tire over extended periods. Furthermore, this invention is simple in structure and easy to implement. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the cooling device.

[0023] Figure 2 This is a front view of the cooling device.

[0024] Figure 3 This is a schematic diagram of the structure of the air storage box.

[0025] Figure 4 This is a schematic diagram of the structure of the cooling device in conjunction with the rotary kiln.

[0026] In the above attached figures, the meanings of each label are as follows:

[0027] 1. Main pipe; 2. Silencer; 3. Branch pipe; 4. Air distribution plate; 5. Air storage box; 6. Air outlet; 7. Cooling air source; 9. Air inlet connection pipe; 10. Passage section; 11. Rotary kiln; 12. Tire. Detailed Implementation

[0028] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this embodiment.

[0029] To address the issue of inadequate cooling performance at the rotary kiln tire in existing technologies, the following embodiments optimize and overcome the shortcomings of the prior art.

[0030] Example

[0031] like Figures 1-4 As shown, this embodiment provides a high-efficiency cooling device for rotary kiln tires, including a main pipe 1 for connecting to a cooling air source 7. The main pipe 1 extends toward the tire 12 and connects to two branch pipes 3. The two branch pipes 3 are located on both sides of the tire 12 and connected to an air storage box 5 for air outlet. The air storage box 5 is provided with several air outlets 6 at intervals along the circumference of the tire 12. The air outlets 6 are provided with air outlets and are used to output cooling air toward the tire 12.

[0032] Preferably, in this embodiment, the cooling air source 7 is a cooling fan, and a connecting flange is provided at the connection between the cooling fan and the main pipe 1.

[0033] The cooling device disclosed in this embodiment guides the airflow into the main pipe 1 and delivers the cooling airflow to the branch pipe 3. The air outlet 6 on the air storage box 5 connected to the branch pipe 3 blows air towards both sides of the belt 12 for cooling. Since the air outlet 6 is arranged along the circumference of the belt 12, the cooling effect can be greatly guaranteed, and the structure of the entire cooling device can be simplified.

[0034] During cooling, excessive noise needs to be avoided. This can be achieved through various noise reduction structures, and is not limited to one. This embodiment optimizes and adopts one feasible option: a silencer 2 is provided at the air inlet of the main pipe 1. When the above solution is adopted, the silencer 2 can eliminate the noise from the cooling air source, reducing the noise when supplying air to the outside.

[0035] The main pipe 1 primarily serves to transport airflow. After connecting to multiple branch pipes 3, it needs to balance the direction of the airflow. Airflow distribution is achieved through branching, and various distribution structures can be adopted; the structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the main pipe 1 includes a straight air-dividing section, and the branch pipes 3 are connected to the end of the air-dividing section. An air-dividing structure is provided at the front of the air-dividing section to guide and distribute the airflow within the main pipe 1 to the two branch pipes 3. With this scheme, the airflow automatically diverts into the branch pipes 3 upon encountering the air-dividing structure after entering the air-dividing section. Simultaneously, the straightness of the air-dividing section facilitates the connection and installation of the branch pipes 3.

[0036] The air distribution structure can take various forms, and its structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the air distribution structure includes an air distribution plate 4, which divides the inner cavity of the air outlet section into a left cavity and a right cavity, and the left cavity and the right cavity are respectively connected to a branch pipe 3. When adopting the above scheme, the air distribution plate 4 can be a single plate that directly separates the airflow; or it can be set as a conical plate according to the number of branch pipes 3 to guide the airflow to be distributed in the direction of the branch pipes 3.

[0037] Branch pipe 3 serves as a flow distribution structure, and its rear end connects to the air storage box 5. This connection can be made via a transitional connecting pipe: the front end of branch pipe 3 connects to the air distribution section, and the rear end of branch pipe 3 connects to the air storage box 5 via a circular-to-square channel section 10. In this configuration, the circular end of the circular-to-square channel connects to branch pipe 3, and the square end connects to the air storage box 5.

[0038] Preferably, the branch pipes 3 are symmetrically arranged on both sides of the air distribution section.

[0039] The structure of the air storage box 5 can be adjusted to better fit the structure of the rotary kiln 11 and the tire 12, improving heat dissipation. Its structure is not limited to a single design; this embodiment optimizes and adopts one feasible option: the air storage box 5 includes an arc-shaped body that fits against the outer surface of the rotary kiln 11. With this design, the air storage box 5 is generally curved. In other designs, an arc-shaped surface fitting the surface of the rotary kiln 11 can be provided on the air storage box 5, with the air outlet arranged circumferentially and correspondingly matched to the tire 12.

[0040] The air outlet 6 is used to release the gas inside the air storage box 5 to the outside, providing cooling airflow towards the tire 12, thereby reducing the temperature of the tire 12 and achieving temperature control. The air outlet 6 can be constructed in various forms, and its structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the air inlet of the air outlet 6 is connected to the box body, and an air outlet duct is formed inside the air outlet 6. The inner diameter of the air outlet duct gradually decreases from the air inlet to the air outlet. When adopting the above scheme, the air outlet 6 can be constructed into a duckbill-shaped structure.

[0041] The higher the airflow velocity, the better the cooling effect formed by the airflow through the belt 12. Therefore, the structure of the air outlet is adjusted, and one feasible option is adopted: the air outlet includes a long strip-shaped air outlet gap.

[0042] The main pipe 1 receives cooling airflow from the cooling air source 7. The delivery channel needs to maintain airtightness; therefore, the connection structure at the lower end of the main pipe 1 can adopt various structures, and its structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the lower end of the main pipe 1 is also connected to a square-to-round air inlet connector 9. The square port of the air inlet connector 9 connects to the cooling air source 7, and the round port of the air inlet connector 9 connects to the main pipe 1. When adopting the above scheme, a sealing structure is provided at both the square and round ports.

[0043] When the scheme disclosed in this embodiment is actually operated, as the rotary kiln 11 rotates, the gap of the tire 12 of the rotary kiln 11 can be cooled completely, uniformly, and efficiently. Under this structural form, the space occupied by the entire system is greatly reduced, and the cooling air is greatly optimized in terms of both coverage area and distance from the cooling point, effectively optimizing the cooling process of the tire 12 of the rotary kiln 11, which is a high-efficiency cooling device for the tire 12 of the rotary kiln 11.

[0044] The above are the embodiments listed in this example. However, this example is not limited to the optional embodiments described above. Those skilled in the art can arbitrarily combine the above methods to obtain other various embodiments. Anyone can derive other various forms of embodiments under the guidance of this example. The above specific embodiments should not be construed as limiting the scope of protection of this example. The scope of protection of this example should be defined in the claims.

Claims

1. A high-efficiency cooling device for rotary kiln belts, characterized in that: It includes a main pipe (1) for connecting to the cooling air source (7), the main pipe (1) extends to the tire (12) and connects to two branch pipes (3), the two branch pipes (3) are located on both sides of the tire (12) and connected to an air storage box (5) for air outlet, the air storage box (5) is provided with several air outlets (6) at intervals along the circumference of the tire (12), and the air outlets (6) are provided with air outlets and are used to output cooling air toward the tire (12).

2. The high-efficiency cooling device for rotary kiln belts according to claim 1, characterized in that: The air inlet end of the main pipe (1) is equipped with a silencer (2).

3. The high-efficiency cooling device for rotary kiln belts according to claim 1, characterized in that: The main pipe (1) includes a straight air distribution section, and the branch pipe (3) is connected to the end of the air distribution section. The front part of the air distribution section is provided with an air distribution structure, which is used to guide and distribute the airflow in the main pipe (1) to the two branch pipes (3).

4. The high-efficiency cooling device for rotary kiln belts according to claim 3, characterized in that: The air distribution structure includes an air distribution plate (4), which divides the inner cavity of the air outlet section into a left cavity and a right cavity, and the left cavity and the right cavity are respectively connected to a branch pipe (3).

5. The high-efficiency cooling device for rotary kiln belts according to claim 1, characterized in that: The front end of the branch pipe (3) is connected to the air distribution section, and the rear end of the branch pipe (3) is connected to the air storage box (5) through a circular-to-square channel section (10).

6. The high-efficiency cooling device for rotary kiln belts according to claim 3 or 4, characterized in that: The branch pipes (3) are symmetrically arranged on both sides of the air distribution section.

7. The high-efficiency cooling device for rotary kiln belts according to claim 1, characterized in that: The air storage box (5) includes an arc-shaped box body that is attached to the outer surface of the rotary kiln (11).

8. The high-efficiency cooling device for rotary kiln belts according to claim 1 or 7, characterized in that: The air outlet of the air outlet component (6) is connected to the box body, and an air outlet duct is formed inside the air outlet component (6). The inner diameter of the air outlet duct gradually decreases from the air inlet to the air outlet.

9. The high-efficiency cooling device for rotary kiln belts according to claim 8, characterized in that: The air outlet includes an elongated air gap.

10. The high-efficiency cooling device for rotary kiln belts according to claim 1, characterized in that: The lower end of the main pipe (1) is also connected to an air inlet connecting pipe (9) that is square to round. The square port of the air inlet connecting pipe (9) is connected to the cooling air source (7), and the round port of the air inlet connecting pipe (9) is connected to the main pipe (1).

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