Inner sleeve top dust cleaning device for sleeve chamber

Abstract

The utility model relates to the technical field of sleeve kiln, concretely to a sleeve chamber upper inner sleeve top dust cleaning device, including the steel structure cone that adds in the kiln inner sleeve upper section top, purging gas pipe, flue gas conveying pipeline, ring pipe, the steel structure cone is same with the original refractory masonry angle of kiln inner sleeve upper section top, purging gas pipe is along the bevel circumference of steel structure cone and is evenly distributed, one end of flue gas conveying pipeline is connected from the upper combustion chamber into the kiln, and extends into the internal space of steel structure cone. In the sleeve chamber upper inner sleeve top dust cleaning device, through adding the steel structure cone same with the original refractory masonry angle, combining purging gas pipe along the bevel circumference of cone and being evenly distributed, can accurate cover the top dust accumulation area of upper inner sleeve. 150 purging gas pipes of 5 layers form dense purging network, cooperate 5 degrees inclination angle design, can reduce the risk of pipeline blockage, can let purging airflow more adhere to the dust accumulation surface, significantly improve dust cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of sleeve kiln technology, specifically to a dust removal device for the top of the inner sleeve of a sleeve chamber. Background Technology

[0002] During the operation of a sleeve kiln, the top area of ​​the upper inner sleeve often faces numerous problems. For example, in lime production, the calcination of limestone within the sleeve kiln generates a large amount of high-temperature, dust-laden flue gas. As this flue gas flows, the high-temperature dust it carries tends to accumulate at the top of the upper inner sleeve. Over time, the accumulated dust not only affects the smooth flow of air within the kiln but may also lead to equipment malfunctions and reduced production efficiency.

[0003] Existing dust removal methods have certain limitations. For example, the dust removal device for a sleeve kiln disclosed in patent CN209745090U, while detecting dust accumulation at the connection between the heat exchanger and the air inlet pipe using a dust accumulation detection device and controlling an acoustic dust cleaner to remove dust, can prevent dust accumulation to some extent and avoid pipe blockage caused by hardening and caking of the heat exchanger's inner wall. However, this device mainly targets the heat exchanger area and lacks specificity for cleaning the top of the inner sleeve in a sleeve kiln. The structure of the top of the inner sleeve differs from that of the heat exchanger, and the characteristics and patterns of dust accumulation also differ, making it difficult for this dust removal device to be effective in this area. Furthermore, the high-temperature environment and complex airflow conditions at the top of the inner sleeve in a sleeve kiln place higher demands on the high-temperature resistance and effectiveness of the dust removal device, which existing technologies struggle to meet. Therefore, developing a highly efficient dust removal device specifically for the top of the inner sleeve in a sleeve kiln is of significant practical importance. Utility Model Content

[0004] The purpose of this utility model is to provide a dust removal device for the top of the inner sleeve of the upper sleeve chamber, in order to solve the problem mentioned in the background art that the high temperature environment and complex airflow conditions at the top of the inner sleeve of the upper sleeve kiln place higher requirements on the high temperature resistance and effectiveness of the dust removal device.

[0005] To achieve the above objectives, this utility model provides a top cleaning device for the inner sleeve of the inner sleeve chamber, comprising a steel structure cone added to the top of the upper section of the inner sleeve, a purging air pipe, a flue gas conveying pipe, and a ring pipe; the steel structure cone has the same angle as the original refractory masonry at the top of the upper section of the inner sleeve; the purging air pipe is evenly distributed along the circumference of the inclined side of the steel structure cone; one end of the flue gas conveying pipe enters the kiln from the upper combustion chamber and extends into the internal space of the steel structure cone.

[0006] This setup involves adding a steel cone structure at the top of the upper section of the kiln sleeve, with the same angle as the original refractory masonry, to create a cleaning space that is compatible with the original kiln structure. The purging air pipes are evenly distributed along the circumference of the cone's inclined side, which can form a surrounding coverage of the cone surface and the surrounding areas prone to ash accumulation. The flue gas conveying pipes are connected from the upper combustion chamber and extend into the inside of the cone, providing a stable air source for purging.

[0007] Preferably, the purge air pipes are inclined at a 5° angle to the plane, and are arranged in 5 layers along the height direction of the steel structure cone, with a total of 150 pipes.

[0008] This design features a 5° angle between the purge air pipe and the plane, allowing the airflow to be sprayed at an angle, reducing the blockage at the pipe inlet caused by dust falling vertically; the design with 5 layers and 150 pipes forms a three-dimensional purge network through multi-layer dense arrangement, improving the purge intensity per unit area.

[0009] Preferably, the input end of the ring pipe is connected to a branch of the chimney flue gas cooled by the cooler via a flue pipe, and the output end of the ring pipe is connected to the flue gas conveying pipes corresponding to the six upper combustion chambers via six branch pipes.

[0010] This system features a ring pipe that receives cooled flue gas from the chimney branches and distributes it to the corresponding flue gas delivery pipes in the upper combustion chamber via six branch pipes. This achieves uniform distribution and directional delivery of the flue gas, while utilizing the low-temperature flue gas for both ash removal and cooling.

[0011] Preferably, a swirl sleeve is installed inside the front end of the purge tube, and several swirl vanes are installed inside the swirl sleeve to increase the swirl and expand the purge area.

[0012] This feature incorporates a swirl sleeve and swirl vanes at the front end of the purge tube, causing the airflow to rotate before it is ejected. This utilizes centrifugal force to expand the airflow diffusion range and increase the purge coverage area of ​​a single tube.

[0013] Preferably, the flue is equipped with a manual butterfly valve and an electric regulating valve.

[0014] This setup includes an electric regulating valve on the flue pipe that can automatically adjust the total air volume in real time, while a manual butterfly valve serves as a backup adjustment and maintenance shut-off device. This dual control ensures stable and controllable air volume.

[0015] Preferably, the purge air pipes are evenly distributed along the inclined edge of the steel structure cone at 150mm intervals.

[0016] This setting involves evenly distributing purge air pipes every 150mm along the inclined side of the cone, ensuring uniform airflow distribution through fixed spacing and avoiding excessively strong or weak local purges.

[0017] Preferably, a manually adjustable valve is installed on the branch pipe.

[0018] This feature allows for the manual adjustment valves on the branch pipes to control the airflow of each branch pipe individually, compensating for any minor deviations that may occur during loop diversion and enabling precise adjustment of airflow in a single area.

[0019] Preferably, the steel structure cone is made of high-temperature resistant steel with a thickness of 10-20cm.

[0020] The steel structure cone used in this installation is made of high-temperature resistant steel and is designed with a thickness of 10-20cm. This allows it to withstand the high-temperature environment inside the kiln while ensuring structural strength and preventing deformation.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: In this cleaning device for the top of the inner sleeve of the sleeve chamber, a steel conical structure with the same angle as the original refractory masonry is added. Combined with purge air pipes evenly distributed along the circumference of the conical's inclined side, the area at the top of the inner sleeve prone to dust accumulation can be precisely covered. Five layers of 150 purge air pipes form a dense purge network. With a 5° tilt angle design, this reduces the risk of pipe blockage and allows the purge airflow to better conform to the dust-accumulated surface, significantly improving the cleaning effect and effectively solving the problem of insufficient targeted cleaning of this area in existing devices.

[0022] The swirl sleeve and internal swirl vanes at the front end of the purging air pipe can increase the airflow swirling, greatly expand the purging area, make the dust removal coverage of a single air pipe wider, reduce dust removal dead corners, and further improve the removal efficiency of dust accumulated on the top.

[0023] The design of the ring pipe and 6 branch pipes can evenly distribute the cooled flue gas from the chimney to the corresponding flue gas delivery pipes of each upper combustion chamber. With the electric regulating valve, manual butterfly valve on the flue pipe and the manual regulating valve on the branch pipe, the total air volume and the air volume of each branch pipe can be flexibly adjusted to accurately match the ash removal needs under different working conditions, ensuring the ash removal effect while avoiding energy waste.

[0024] During the dust removal process, the low-temperature flue gas reduces the temperature of the refractory material at the top of the inner sleeve while purging, thus reducing the damage to the refractory material caused by high temperature. At the same time, timely removal of accumulated dust can prevent it from affecting the airflow in the kiln, reducing the probability of equipment failure due to dust accumulation, thereby extending the service life of related components of the sleeve kiln and improving the operational stability of the equipment. Attached Figure Description

[0025] Figure 1 This is one of the partial structural schematic diagrams of this utility model; Figure 2 This is the second partial structural schematic diagram of the present utility model; Figure 3 This is a schematic diagram of the purge air pipe in this utility model; Figure 4 This is a schematic diagram of the swirl sleeve in this utility model; The meanings of the labels in the diagram are as follows: 1. Steel structure cone; 2. Purge gas pipe; 21. Swirl sleeve; 22. Swirl vane; 3. Flue gas conveying pipe; 4. Branch pipe; 41. Manual regulating valve; 5. Kiln inner sleeve; 6. Ring pipe; 7. Smoke pipe; 71. Manual butterfly valve; 72. Electric regulating valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides a dust removal device for the top of the inner sleeve of a sleeve chamber, such as... Figure 1 , Figure 2 As shown, it includes a steel structure cone 1, a purge gas pipe 2, a flue gas conveying pipe 3, and a ring pipe 6, which are added to the top of the upper section of the kiln inner sleeve 5. The steel structure cone 1 has the same angle as the original refractory masonry at the top of the upper section of the kiln inner sleeve 5. The purge gas pipe 2 is evenly distributed along the circumference of the inclined side of the steel structure cone 1. One end of the flue gas conveying pipe 3 is connected to the kiln from the upper combustion chamber and extends into the internal space of the steel structure cone 1.

[0028] By adding a steel conical structure 1 with the same angle as the original refractory masonry at the top of the upper section of the kiln sleeve 5, a cleaning space adapted to the original kiln structure is formed. The purging air pipe 2 is evenly distributed along the circumference of the inclined side of the steel conical structure 1, which can form a surrounding coverage of the surface of the conical structure and the surrounding areas prone to ash accumulation. The flue gas conveying pipe 3 is connected from the upper combustion chamber and extends into the interior of the steel conical structure 1, providing a stable air source for purging. The angle of the steel conical structure 1 matches that of the original refractory material, avoiding new dead corners for ash accumulation due to structural abruptness, and ensuring the integration of the cleaning device with the kiln body. The circumferentially distributed design of the purging air pipe 2 achieves full coverage of the top area, solving the problem of local omissions in traditional cleaning methods. The path design of the flue gas conveying pipe 3 is direct and efficient, providing continuous power for cleaning.

[0029] In this embodiment, as Figure 1 As shown, the purge air pipe 2 forms a 5° angle with the plane and is arranged in 5 layers along the height direction of the steel structure cone 1, with a total of 150 pipes.

[0030] The purge air pipe 2 is inclined at a 5° angle to the plane, which allows the airflow to be sprayed obliquely, reducing the blockage of the pipe inlet caused by vertical dust falling. The design of 5 layers and a total of 150 pipes along the height of the steel structure cone 1 forms a three-dimensional purge network through multi-layer dense arrangement, improving the purge intensity per unit area. The 5° inclination angle of the purge air pipe 2 significantly reduces the risk of pipe blockage and reduces the frequency of equipment maintenance; the 5-layer layout covers the entire height of the steel structure cone 1, and the 150 purge air pipes 2 ensure purge density, greatly improving dust removal efficiency and avoiding local dust accumulation.

[0031] Specifically, such as Figure 2 As shown, the input end of the ring pipe 6 is connected to the branch of the chimney flue gas after being cooled by the cooler through the flue pipe 7, and the output end of the ring pipe 6 is connected to the flue gas conveying pipes 3 corresponding to the six upper combustion chambers through six branch pipes 4 respectively.

[0032] The ring pipe 6 receives cooled flue gas from the chimney branches and connects to the flue pipe 7. This flue gas is then distributed to the corresponding upper combustion chamber's flue gas conveying pipe 3 via six branch pipes 4, achieving uniform distribution and directional delivery of the flue gas. The low-temperature flue gas serves both as a cleaning and cooling system. The distribution design of the ring pipe 6 and branch pipes 4 ensures balanced airflow in the cleaning areas corresponding to the six upper combustion chambers, avoiding insufficient cleaning in certain areas. The cooled flue gas delivered via the flue pipe 7 reduces the temperature of the steel structure cone 1 and surrounding refractory materials while cleaning, extending the service life of the refractory materials.

[0033] Furthermore, such as Figure 3 , Figure 4 As shown, a swirl sleeve 21 is installed inside the front end of the purge tube 2, and several swirl vanes 22 are installed inside the swirl sleeve 21 to increase the swirl and expand the purge area.

[0034] The swirl sleeve 21 and internal swirl vanes 22 at the front end of the purge air pipe 2 cause the airflow to rotate before it is ejected, using centrifugal force to expand the airflow diffusion range and increase the purging coverage area of ​​a single purge air pipe 2. The design of the swirl sleeve 21 and swirl vanes 22 changes the airflow of the purge air pipe 2 from "direct injection" to "swirling diffusion", increasing the effective dust removal area of ​​a single purge air pipe 2 by more than 30%, reducing the amount of air pipe used while reducing dust removal dead zones.

[0035] Furthermore, such as Figure 2 As shown, a manual butterfly valve 71 and an electric regulating valve 72 are installed on the flue pipe 7.

[0036] The electric regulating valve 72 on the flue duct 7 can automatically adjust the total air volume in real time, while the manual butterfly valve 71 serves as a backup regulating and maintenance shut-off device. This dual control ensures stable and controllable air volume. The electric regulating valve 72 enables precise control of the dust removal intensity to adapt to different dust accumulation conditions; the manual butterfly valve 71 enhances the safety of the flue duct 7 system, facilitates equipment maintenance or emergency shutdown, and ensures operational stability.

[0037] Furthermore, the purge air pipes 2 are evenly distributed along the inclined edge of the steel structure cone 1 every 150 mm.

[0038] The purge air pipes 2 are evenly distributed every 150mm along the circumference of the steel structure cone 1. The fixed spacing ensures uniform airflow distribution and avoids excessively strong or weak local purging. The uniform 150mm spacing ensures balanced force on all areas of the steel structure cone 1 surface, resulting in consistent dust removal and preventing local dust accumulation caused by uneven spacing.

[0039] Furthermore, such as Figure 2 As shown, a manual regulating valve 41 is installed on branch pipe 4.

[0040] The manual regulating valve 41 on pipe 4 can individually control the air volume of each branch pipe, compensating for any minor deviations that may exist in the flow distribution of the ring pipe 6, and achieving fine-tuning of the air volume in a single area. To address the differences in ash accumulation in different upper combustion chambers, the air volume of branch pipe 4 can be finely adjusted using the manual regulating valve 41 to ensure that the ash removal intensity is appropriate for each area, thereby improving the overall uniformity of ash removal.

[0041] Furthermore, the steel structure cone 1 is made of high-temperature resistant steel with a thickness of 10-20cm.

[0042] The steel structure cone 1 is made of high-temperature resistant steel with a thickness of 10-20cm. This design ensures that it can withstand the high-temperature environment inside the kiln while maintaining structural strength and preventing deformation. The high-temperature resistant material and reasonable thickness ensure that the steel structure cone 1 can operate stably under long-term high temperatures without deformation or damage, reducing the frequency of equipment replacement and ensuring the durability of the dust removal system.

[0043] In use, the cleaning device for the top of the inner sleeve of the sleeve chamber of this utility model first obtains the air source for cleaning from the treated flue gas from the chimney: the flue gas discharged from the chimney is first cooled by a cooler, and after the temperature is reduced, it enters the system through a branch of the flue pipe 7. The electric regulating valve 72 on the flue pipe 7 can adjust the total air volume in real time according to the ash accumulation. The manual butterfly valve 71 serves as an auxiliary control device, used to cut off the airflow or make manual fine adjustments during maintenance to ensure that the amount of flue gas entering the system is stable and controllable. The cooled flue gas enters the ring pipe 6, which serves as a transfer and distribution structure. Through six branch pipes 4, the flue gas is evenly distributed to the corresponding flue gas conveying pipes 3 of the upper combustion chamber. The manual regulating valve 41 on each branch pipe 4 can individually adjust the airflow, compensating for any minor deviations in the distribution within the ring pipe 6 and ensuring that the airflow to the cleaning areas corresponding to the six upper combustion chambers is appropriate for their respective ash accumulation levels. Subsequently, the flue gas enters the kiln from the upper combustion chamber via the flue gas conveying pipes 3 and is ultimately delivered to the internal space of the added steel conical structure 1. The flue gas entering the steel cone 1 is ejected through purge air pipes 2, which are evenly distributed along the circumference of the cone's inclined side. The purge air pipes 2 are designed with multiple enhanced cleaning structures: The layout is evenly distributed every 150mm circumference, combined with 5 layers of three-dimensional distribution totaling 150, forming a dense purging network covering the entire surface of the steel structure cone 1; The design, with a 5° tilt angle to the plane, allows the airflow to be sprayed at an angle, reducing the blockage caused by dust falling vertically into the pipe; The front-end swirl sleeve 21 and the internal swirl vane 22 cause the airflow to rotate, expanding the purging area through centrifugal force, increasing the dust removal coverage of a single air pipe by more than 30%. The airflow ejected from the purging pipe 2 acts directly on the surface of the steel structure cone 1 and the surrounding areas prone to dust accumulation. The impact force of the airflow removes the accumulated high-temperature dust, preventing dust blockage from affecting the airflow circulation inside the kiln. At the same time, since the flue gas used is cooled and has a relatively low temperature, the temperature of the steel structure cone 1 and the surrounding refractory material can be reduced simultaneously during the purging process, reducing high-temperature damage to the refractory material and extending the service life of the equipment. The steel structure cone 1 is made of high-temperature resistant steel and is built at the same angle as the original refractory material in the upper section of the inner sleeve 5 of the kiln. This not only adapts to the high-temperature environment inside the kiln, but also avoids the creation of new dead corners for ash accumulation due to the abrupt structure, ensuring that the ash removal device is stably matched with the kiln structure for a long time and continuously exerts the ash removal effect. The entire working process achieves efficient dust removal of the top of the inner sleeve in the sleeve chamber through the rational utilization and precise distribution of flue gas, enhanced airflow and structural adaptation, while taking into account equipment protection and operational stability.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for the top of the inner sleeve of a sleeve chamber, characterized in that: It includes a steel structure cone (1), a purge gas pipe (2), a flue gas conveying pipe (3), and a ring pipe (6) added to the top of the upper section of the kiln sleeve (5); the steel structure cone (1) has the same angle as the original refractory material masonry at the top of the upper section of the kiln sleeve (5); the purge gas pipe (2) is evenly distributed along the circumference of the inclined side of the steel structure cone (1); one end of the flue gas conveying pipe (3) is connected to the kiln from the upper combustion chamber and extends into the internal space of the steel structure cone (1).

2. The dust removal device for the top of the inner sleeve of the sleeve chamber according to claim 1, characterized in that: The purge air pipe (2) forms a 5° angle with the plane and is arranged in 5 layers along the height direction of the steel structure cone (1), with a total of 150 pipes.

3. The dust removal device for the top of the inner sleeve of the sleeve chamber according to claim 1, characterized in that: The input end of the ring pipe (6) is connected to the branch of the chimney flue gas cooled by the cooler through the flue pipe (7), and the output end of the ring pipe (6) is connected to the flue gas conveying pipes (3) corresponding to the six upper combustion chambers through six branch pipes (4).

4. The dust removal device for the top of the inner sleeve of the sleeve chamber according to claim 1, characterized in that: The front end of the purge pipe (2) is equipped with a swirl sleeve (21), and the inside of the swirl sleeve (21) is equipped with several swirl vanes (22) to increase the swirl and expand the purge area.

5. The dust removal device for the top of the inner sleeve of the sleeve chamber according to claim 3, characterized in that: The flue (7) is equipped with a manual butterfly valve (71) and an electric regulating valve (72).

6. The dust removal device for the top of the inner sleeve of the sleeve chamber according to claim 1, characterized in that: The purge air pipe (2) is evenly distributed every 150 mm along the inclined side of the steel structure cone (1).

7. The dust removal device for the top of the inner sleeve of the sleeve chamber according to claim 3, characterized in that: A manual regulating valve (41) is installed on the branch pipe (4).

8. The dust removal device for the top of the inner sleeve of the sleeve chamber according to claim 1, characterized in that: The steel structure cone (1) is made of high-temperature resistant steel with a thickness of 10-20cm.

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