A dust removal and cleaning device for a coke oven air inlet of heat recovery

Abstract

This utility model belongs to the field of coke oven air intake dust removal technology, specifically disclosing a dust removal and cleaning device for the air intake of a heat recovery coke oven. It addresses the problem of dust accumulation and blockage caused by the inability to continuously operate the coke oven air intake. The device includes a connecting box connected to the heat recovery coke oven, with a filter pipe and a reducing pipe sequentially connected to the outside of the connecting box. On one hand, it achieves continuous multi-stage air filtration through intermittent filter replacement components, allowing for intermittent filter element replacement during the filtration process. This ensures continuous air filtration and simultaneously reduces the problem of low air filtration efficiency caused by downtime for component replacement. On the other hand, it simultaneously performs pneumatic and mechanical cleaning of deposited dust during intermittent filter replacement, further ensuring continuous air filtration during the intermittent filter replacement process. Through the combined effect of these two methods, the cleanliness of the air intake of the heat recovery coke oven can be effectively guaranteed, improving heat recovery efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coke oven air intake dust removal technology, and in particular to a dust removal and cleaning device for the air intake of a heat recovery coke oven. Background Technology

[0002] As a key channel for supplying combustion air, the air inlet of a heat recovery coke oven faces the problem of smoke and dust blockage during long-term use.

[0003] In the prior art, the inner and outer shell of the dust collection hood with the reference patent publication number CN207259447U is layered, and its air inlet filter is a fixed welded structure. When it is blocked, it needs to be disassembled and cleaned after shutdown, which leads to a decrease in the operating efficiency of the coke oven. For example, the diversion device used in patent publication number CN202808700U can reduce the flow rate of flue gas, but it does not solve the problem of dust deposition.

[0004] To address the aforementioned technical deficiencies, a solution is proposed that employs a continuous modular interchangeable filter structure to achieve uninterrupted dust removal and cleaning of the coke oven air inlet. Utility Model Content

[0005] The purpose of this invention is to provide a dust removal and cleaning device for the air inlet of a heat recovery coke oven, in order to solve the problem of blockage caused by dust accumulation when the coke oven air inlet cannot be shut down without interruption.

[0006] The objective of this utility model can be achieved through the following technical solution: A dust removal and cleaning device for the air inlet of a heat recovery coke oven, comprising a connecting box connected to the heat recovery coke oven, wherein a filter pipe and a reducing pipe are sequentially connected to the outside of the connecting box, and the outer end of the reducing pipe is connected to the air inlet; a pretreatment box and a posttreatment box are continuously inserted longitudinally along the air inlet direction on the filter pipe, and an intermittent filter replacement assembly is provided in both the pretreatment box and the posttreatment box; the intermittent filter replacement assembly includes a connecting frame rotatably disposed in the pretreatment box or the posttreatment box, and a filter disc corresponding to the filter pipe is installed on the rotation trajectory of the connecting frame; an air inlet pipe is installed outside the rotation trajectory of the filter disc corresponding to the pretreatment box and the posttreatment box, and a synchronous scraping assembly is installed on the air inlet pipe.

[0007] Preferably, a drive assembly is installed on the outside of both the pre-processing box and the post-processing box. The drive assembly includes a motor, the output end of which extends into the interior of the pre-processing box or the post-processing box and is connected to the connecting frame. The motor is equipped with drive teeth corresponding to the output end on the outside of the pre-processing box or the post-processing box.

[0008] Preferably, the synchronous scraping assembly includes a driven rotating tooth rotatably disposed on the air intake pipe, the driven rotating tooth meshing with a driving tooth, a rocker arm radially mounted on the inner ring side of the driven rotating tooth, and a scraping blade in contact with the surface of the filter disc mounted on the inner side of the rocker arm.

[0009] Preferably, a cover plate is installed on the side of the pretreatment box and the posttreatment box that are far apart from each other, and the cover plate has a perforation on the part corresponding to the filter tube, and the motor is connected to the cover plate.

[0010] Preferably, both the pretreatment box and the posttreatment box are equipped with slag discharge pipes at their lower ends.

[0011] Preferably, a conical guide column is installed inside the connection box near the filter tube, and the cross-sectional length of the guide column gradually increases along the air intake direction.

[0012] Preferably, the conical tip of the guide column does not contact the post-treatment box, and the side of the guide column away from the conical tip is connected to the convex side of the connecting box.

[0013] The beneficial effects of this utility model are:

[0014] (1) In this utility model, on the one hand, the intermittent filter replacement component completes the continuous multi-stage filtration of air, and the filter element can be replaced intermittently during the filtration process to ensure the continuity of air filtration and simultaneously reduce the problem of low air filtration efficiency caused by shutdown for component replacement; on the other hand, the pneumatic and mechanical cleaning of deposited dust is carried out simultaneously during the intermittent filter replacement process to help ensure the continuous filtration of air during the intermittent filter replacement process; under the combined effect of the above two, the cleanliness of the air intake of the heat recovery coke oven can be effectively guaranteed and the heat recovery efficiency can be improved.

[0015] (2) During the “intermittent filter replacement” process: the motor starts and drives the connecting frame to rotate, so that the filter disc on the connecting frame is intermittently aligned with the filter tube. Specifically, the infrared sensors set in the pre-treatment box and post-treatment box monitor the thickness of the deposited dust in real time and feed back control signals to the motor. The motor drives the filter disc to rotate intermittently and align with the filter tube to complete the intermittent filtration.

[0016] (3) The synchronous scraping stage: During the intermittent correspondence of the filter disc driven by the motor, the drive teeth are also driven to rotate. The drive teeth drive the driven teeth to rotate synchronously, and drive the scraping blades inside the driven teeth to rotate, thereby scraping off the deposited dust on the filter disc that has rotated to the position of the air inlet pipe. Simultaneously, the air inlet pipe is used to blow air, thereby completing the pneumatic + mechanical cleaning process of the filter disc after rotation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings;

[0018] Figure 1 This is a three-dimensional structural view of the entire utility model;

[0019] Figure 2This is a bottom view structural diagram of this utility model;

[0020] Figure 3 This is a side sectional view of the present invention;

[0021] Figure 4 This is a top sectional view of the present invention;

[0022] Figure 5 This is an exploded view of the intermittent filter replacement assembly of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the drive component of this utility model.

[0024] Legend: 1. Connecting box; 2. Reducing pipe; 3. Filter pipe; 4. Pretreatment box; 5. Posttreatment box; 6. Air inlet pipe; 7. Motor; 8. Drive gear; 9. Driven gear; 10. Slag discharge pipe; 11. Guide column; 12. Filter plate; 13. Cover plate; 14. Perforation; 15. Connecting frame; 16. Swing rod; 17. Scraper blade. Detailed Implementation

[0025] 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.

[0026] Example 1: This example is used to solve the problem of dust accumulation and blockage caused by the inability to keep the coke oven air intake running without interruption.

[0027] Please see Figure 1 - Figure 6 As shown, this embodiment is a dust removal and cleaning device for the air inlet of a heat recovery coke oven, including a connecting box 1 connected to the heat recovery coke oven. A filter pipe 3 and a reducing pipe 2 are sequentially connected to the outside of the connecting box 1. The outer end of the reducing pipe 2 is connected to the air inlet. A pretreatment box 4 and a posttreatment box 5 are continuously inserted longitudinally along the air inlet direction on the filter pipe 3. An intermittent filter replacement assembly is provided in both the pretreatment box 4 and the posttreatment box 5. The intermittent filter replacement assembly includes a connecting frame 15 rotatably disposed in the pretreatment box 4 or the posttreatment box 5. A filter disc 12 corresponding to the filter pipe 3 is installed on the rotation trajectory of the connecting frame 15. An air inlet pipe 6 is installed on the outside of the rotation trajectory of the filter disc 12 corresponding to the pretreatment box 4 and the posttreatment box 5. A synchronous scraping assembly is installed on the air inlet pipe 6, and a blower air source is connected to the outside of the air inlet pipe 6.

[0028] Reference Figure 6As shown, drive components are installed on the outside of both the pretreatment box 4 and the posttreatment box 5. The drive components include a motor 7. The output end of the motor 7 extends into the interior of the pretreatment box 4 or the posttreatment box 5 and is connected to the connecting frame 15. The motor 7 is equipped with drive teeth 8 corresponding to the output end of the pretreatment box 4 or the posttreatment box 5. The "intermittent filter replacement" process is as follows: The motor 7 starts and drives the connecting frame 15 to rotate, so that the filter disc 12 on the connecting frame 15 is intermittently aligned with the filter tube 2. Specifically, the infrared sensors installed in the pretreatment box 4 and the posttreatment box 5 monitor the thickness of the deposited dust in real time and feed back control signals to the motor 7. The motor 7 drives the filter disc 12 to rotate intermittently and align with the filter tube 2 to complete intermittent filtration.

[0029] Reference Figure 1 and Figure 5 As shown, the synchronous scraping assembly includes a driven rotating tooth 9 rotatably mounted on the air inlet pipe 6. The driven rotating tooth 9 meshes with the driving tooth 8. A swing rod 16 is radially mounted on the inner ring side of the driven rotating tooth 9. A scraping blade 17 that contacts the surface of the filter disc 12 is mounted on the inner side of the swing rod 16. The synchronous scraping stage includes: the motor 7 drives the filter disc 12 to achieve intermittent correspondence and also drives the driving tooth 8 to rotate. The driving tooth 8 drives the driven rotating tooth 9 to rotate synchronously and drives the scraping blade 17 inside the driven rotating tooth 9 to rotate, thereby scraping off the deposited dust on the filter disc 12 that has rotated to the position of the air inlet pipe 6. Simultaneously, the air inlet pipe 6 blows air, thereby completing the pneumatic + mechanical cleaning process of the filter disc 12 after rotation.

[0030] Please see Figure 1 - Figure 6 As shown, the working principle of this utility model differs from that of the prior art in that: air is introduced through the reducing pipe 2 and continuously passes through the filter pipe 2 and the connecting box 1 into the heat recovery coke oven. The air is continuously filtered in multiple stages by the intermittent filter replacement component set in the filter pipe 2. During the filtration process, the filter element can be replaced intermittently to ensure the continuity of air filtration and simultaneously reduce the problem of reduced air filtration efficiency caused by downtime for component replacement. Furthermore, during the intermittent filter element replacement, pneumatic and mechanical cleaning of dust deposits on the filter element can be performed simultaneously, thereby ensuring continuous filtration during the intermittent filter replacement process.

[0031] Example 2: This example is based on Example 1, and describes how to discharge dust after dust deposition removal and uniformly transport filtered air during the intermittent filter replacement process.

[0032] Please see Figure 1 , Figure 3 - Figure 6As shown, a dust removal and cleaning device for the air inlet of a heat recovery coke oven in this embodiment includes a cover plate 13 installed on the side of the pretreatment box 4 and the posttreatment box 5 that are far apart from each other. The cover plate 13 has a perforation 14 in the part corresponding to the filter tube 3. The motor 7 is connected to the cover plate 13.

[0033] Both the pretreatment box 4 and the posttreatment box 5 have slag discharge pipes 10 installed through their lower ends;

[0034] Reference Figure 4 As shown, a cone-shaped guide column 11 is installed inside the connecting box 1 near the filter pipe 3. The cross-sectional length of the guide column 11 gradually increases along the air intake direction. The cone tip of the guide column 11 does not contact the aftertreatment box 5. The side of the guide column 11 away from the cone tip is connected to the convex side of the connecting box 1.

[0035] Please see Figure 3 - Figure 6 As shown, after the dust is removed, it falls and is collected through the slag discharge pipes 10 at the bottom of the pretreatment box 4 and the posttreatment box 5, respectively. The filtered air is injected into the connecting box 1 through the guide column 11 and evenly injected into the heat recovery coke oven through the arc structure, so as to form full contact with the coke cake in the heat recovery coke oven.

[0036] Furthermore, the filter discs 12 in the pretreatment box 4 and posttreatment box 5 can be removed through the detachable cover 13, allowing for thorough cleaning or replacement after a period of operation, thus improving ease of use.

[0037] Combining Embodiments 1 and 2, on the one hand, continuous multi-stage filtration of air is achieved through intermittent filter replacement components, and the filter element can be replaced intermittently during the filtration process, ensuring the continuity of air filtration and simultaneously reducing the problem of low air filtration efficiency caused by downtime for component replacement; on the other hand, pneumatic and mechanical cleaning of deposited dust is carried out simultaneously during intermittent filter replacement, further ensuring continuous air filtration during the intermittent filter replacement process; under the combined effect of the above two, the cleanliness of the air intake of the heat recovery coke oven can be effectively guaranteed, and the heat recovery efficiency can be improved.

[0038] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A dust removal and cleaning device for the air inlet of a heat recovery coke oven, comprising a connecting box (1) connected to the heat recovery coke oven, characterized in that, The external of the connecting box (1) is connected in sequence to a filter pipe (3) and a reducing pipe (2), and the outer end of the reducing pipe (2) is connected to the air inlet. A pretreatment box (4) and a posttreatment box (5) are continuously inserted longitudinally along the air inlet direction on the filter pipe (3). An intermittent filter replacement assembly is provided in both the pretreatment box (4) and the posttreatment box (5). The intermittent filter replacement assembly includes a connecting frame (15) rotatably installed in the pretreatment box (4) or the posttreatment box (5). A filter disc (12) corresponding to the filter pipe (3) is installed on the rotation trajectory of the connecting frame (15). An air inlet pipe (6) is installed on the outside of the rotation trajectory of the filter disc (12) corresponding to the filter pipe (3). A synchronous scraping assembly is installed on the air inlet pipe (6).

2. The dust removal and cleaning device for the air inlet of a heat recovery coke oven according to claim 1, characterized in that, Both the pre-processing box (4) and the post-processing box (5) are equipped with drive components. The drive components include motors (7). The output end of the motor (7) extends into the interior of the pre-processing box (4) or the post-processing box (5) and is connected to the connecting frame (15). The output end of the motor (7) corresponding to the outside of the pre-processing box (4) or the post-processing box (5) is equipped with drive teeth (8).

3. The dust removal and cleaning device for the air inlet of a heat recovery coke oven according to claim 2, characterized in that, The synchronous scraping assembly includes a driven rotating tooth (9) rotatably mounted on the air intake pipe (6), the driven rotating tooth (9) meshing with the driving tooth (8), and a rocker arm (16) radially mounted on the inner ring side of the driven rotating tooth (9), and a scraping blade (17) in contact with the surface of the filter disc (12) mounted on the inner side of the rocker arm (16).

4. The dust removal and cleaning device for the air inlet of a heat recovery coke oven according to claim 2, characterized in that, The pretreatment box (4) and the posttreatment box (5) are each equipped with a cover plate (13) on the side away from each other. The cover plate (13) has a perforation (14) on the part corresponding to the filter tube (3). The motor (7) is connected to the cover plate (13).

5. The dust removal and cleaning device for the air inlet of a heat recovery coke oven according to claim 1, characterized in that, Both the pretreatment box (4) and the posttreatment box (5) are equipped with slag discharge pipes (10) that run through their lower ends.

6. The dust removal and cleaning device for the air inlet of a heat recovery coke oven according to claim 1, characterized in that, The connecting box (1) is equipped with a cone-shaped guide column (11) inside the filter pipe (3), and the cross-sectional length of the guide column (11) gradually increases along the air intake direction.

7. The dust removal and cleaning device for the air inlet of a heat recovery coke oven according to claim 6, characterized in that, The cone tip of the guide column (11) does not contact the post-processing box (5), and the side of the guide column (11) away from the cone tip is connected to the convex side of the connecting box (1).

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