A deacidification tower ash bucket arch breaking device

Abstract

The utility model relates to a kind of arch breaking devices of deacidification tower ash bucket, including sealing cover, driving device, sealing cover is equipped with air inlet, sealing cover is equipped with upper flange, lower flange, it is rotatably equipped with middle flange between upper flange and lower flange, the lower side of lower flange is equipped with connecting flange, fixedly equipped with retainer ring on middle flange, the position of the inner side of upper flange corresponds retainer ring and is equipped with extension, retainer ring and extension abut;The inner side of connecting flange is equipped with clamping groove, and sealing ring is installed in clamping groove and abuts with the outer side of middle flange. Sealing cover cooperates low-pressure clean gas that air inlet is passed into, maintains micro-positive pressure, reduces dust to penetrate into cover;The retainer ring on middle flange and the extension of the inner side of upper flange abut, block dust from upper flange gap invasion;The sealing ring in the clamping groove of the inner side of connecting flange and the outer side of middle flange are tightly abutted, fill in lower gap, block the path of dust into internal transmission area, substantially reduce dust invasion.

Description

Technical Field

[0001] This utility model relates to the technical field of arch-breaking devices, specifically to an arch-breaking device for an acid desulfurization tower ash hopper. Background Technology

[0002] In modern industrial production, deacidification towers play a crucial role, especially in areas such as waste incineration and flue gas treatment from coal-fired boilers. Taking waste incineration as an example, the incineration process generates large amounts of flue gas containing acidic gases, such as sulfur dioxide (SO2) and hydrogen chloride (HCl). If these acidic gases are emitted directly without treatment, they will cause serious air pollution, leading to acid rain and other environmental problems. The function of the deacidification tower is to remove these acidic gases through specific chemical reactions, ensuring they meet environmental emission standards. Ash produced from waste incineration is often characterized by high moisture content and strong viscosity, easily leading to clumping and bridging in the ash hopper. Once this occurs, the material in the ash hopper cannot fall smoothly, resulting in poor ash discharge. Poor ash discharge causes material to accumulate in the ash hopper, occupying space and affecting the airflow distribution and reaction space within the deacidification tower, thus reducing deacidification efficiency and failing to effectively remove acidic gases from the flue gas, leading to excessive emissions. Furthermore, prolonged material accumulation can also put pressure on the structure of the deacidification tower, posing a safety hazard.

[0003] During the operation of the deacidification tower, the ash hopper arch-breaking device is a crucial component for ensuring its normal operation. Some existing arch-breaking devices have less than ideal sealing performance, allowing dust from the ash hopper to easily enter the device through gaps during operation. On one hand, dust intrusion can exacerbate abrasive wear on transmission components such as gears and bearings, potentially increasing the probability of component failure over time and shortening the overall lifespan of the device. On the other hand, to address component wear or failure caused by dust, companies often need to increase the frequency of shutdowns for inspection and maintenance. This not only increases the manpower and material costs of equipment maintenance but may also interfere with the continuous ash discharge process of the deacidification tower during maintenance, indirectly affecting the overall operational stability of the deacidification tower. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a deacidification tower ash hopper arch-breaking device.

[0005] The objective of this utility model can be achieved through the following technical solution: A deacidification tower ash hopper arch-breaking device includes a sealing cover and a driving device. The sealing cover is provided with an air inlet. An upper flange and a lower flange are provided inside the sealing cover. The upper flange and the lower flange are detachably locked by a first bolt. A middle flange is rotatably provided between the upper flange and the lower flange. The middle flange is connected to the driving device. A mounting seat is provided at intervals on the inner ring of the middle flange. A scraper assembly is provided on the mounting seat. A connecting flange is provided below the lower flange. The connecting flange and the lower flange are detachably locked by a second bolt. A bushing is fitted on the second bolt between the connecting flange and the lower flange. A retaining ring is fixedly provided on the middle flange. An extension is provided on the inner side of the upper flange corresponding to the position of the retaining ring. The retaining ring abuts against the extension. A groove is opened on the inner side of the connecting flange. A sealing ring that abuts against the outer side of the middle flange is installed in the groove.

[0006] Preferably, the drive device includes a gear ring disposed on the outer ring of the middle flange, a gear that meshes with the gear ring is rotatably disposed between the lower flange and the connecting flange, and a geared motor is installed on the outer side of the sealing cover on one side of the gear, and the output end of the geared motor is connected to the gear transmission.

[0007] Preferably, ball bearings are provided between the middle flange and the upper and lower flanges.

[0008] Preferably, it also includes an upper ash hopper and a lower ash hopper, which are respectively connected to an upper flange and a connecting flange.

[0009] Preferably, the scraper assembly includes a mounting plate, on which a connecting arm is provided. One end of the connecting arm is provided with an upper scraper arm parallel to the inner wall of the upper ash hopper, and the other end is provided with a lower scraper arm parallel to the inner wall of the lower ash hopper.

[0010] The beneficial effects of this utility model are as follows: the sealing cover can form an external closed protection for the core transmission area of ​​the device. In conjunction with the low-pressure clean gas introduced through its upper air inlet, it can maintain a slightly positive pressure environment inside the cover, reducing the possibility of dust in the ash hopper penetrating into the cover; the retaining ring on the middle flange abuts against the extension on the inner side of the upper flange, forming a physical barrier on the upper part of the device, preventing dust from intruding into the mating surface of the middle flange and the upper flange from the flange gap; the sealing ring in the groove on the inner side of the connecting flange abuts tightly against the outer side of the middle flange, and the elastic deformation of the sealing ring fills the lower gap, further blocking the path of dust entering the internal transmission area, which can greatly reduce dust intrusion and extend the service life of the device. Attached Figure Description

[0011] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0012] Figure 1This is a schematic diagram of the structure of a deacidification tower ash hopper arch-breaking device according to the present invention.

[0013] Figure 2 This is an exploded view of a deacidification tower ash hopper arch-breaking device according to the present invention.

[0014] Figure 3 This is a cross-sectional view of a deacidification tower ash hopper arch-breaking device according to the present invention.

[0015] Figure 4 for Figure 3 A partial schematic diagram of point A in the middle.

[0016] Figure 5 for Figure 3 A partial schematic diagram at point B in the middle.

[0017] The labels in the diagram represent: 1. Sealing cover; 2. Drive unit; 3. Air inlet; 4. Upper flange; 5. Lower flange; 6. First bolt; 7. Middle flange; 8. Mounting seat; 9. Scraper assembly; 10. Connecting flange; 11. Second bolt; 12. Bushing; 13. Retaining ring; 14. Extension; 15. Slot; 16. Sealing ring; 17. Gear ring; 18. Gear; 19. Gear motor; 20. Ball bearing; 21. Upper ash hopper; 22. Lower ash hopper; 23. Mounting plate; 24. Connecting arm; 25. Upper scraper arm; 26. Lower scraper arm. Detailed Implementation

[0018] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0019] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0020] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] See Figures 1 to 5 As shown, the structure of this utility model is as follows: a deacidification tower ash hopper arch-breaking device, including a sealing cover 1 and a driving device 2. The sealing cover 1 is provided with an air inlet 3. The sealing cover 1 is provided with an upper flange 4 and a lower flange 5. The upper flange 4 and the lower flange 5 are detachably locked by a first bolt 6. A middle flange 7 is rotatably provided between the upper flange 4 and the lower flange 5. The middle flange 7 is connected to the driving device 2. The inner ring of the middle flange 7 is provided with a mounting seat 8 at intervals. The mounting seat 8 is provided with a scraper assembly 9. A connecting flange 10 is provided below the lower flange 5. The connecting flange 10 and the lower flange 5 are detachably locked by a second bolt 11. A bushing 12 is sleeved on the second bolt 11 between the connecting flange 10 and the lower flange 5. A retaining ring 13 is fixedly provided on the middle flange 7. An extension 14 is provided on the inner side corresponding to the position of the retaining ring 13, and the retaining ring 13 abuts against the extension 14. A groove 15 is opened on the inner side of the connecting flange 10, and a sealing ring 16 is installed in the groove 15 to abut against the outer side of the middle flange 7. Specifically, the sealing cover 1 forms a closed space, and with the low-pressure clean gas introduced by the air inlet 3, it maintains a slight positive pressure inside the cover, preventing external dust from entering the core transmission area inside the cover. The retaining ring 13 on the middle flange 7 abuts against the inner extension 14 of the upper flange 4, forming a physical barrier to prevent dust from the upper gap from entering the mating surface of the middle flange 7 and the upper flange 4. The sealing ring 16 in the groove 15 on the inner side of the connecting flange 10 abuts tightly against the outer side of the middle flange 7, and fills the lower gap by elastic deformation, further blocking the dust entry path. The upper flange 4 and the lower flange 5 are locked by the first bolt 6, and the lower flange 5 and the connecting flange 10 are locked by the second bolt 11 and the bushing 12 to ensure the rigidity of the overall structure and provide support for the stable rotation of the middle flange 7. When the middle flange 7 rotates under the drive of the drive device 2, the scraper on its inner mounting seat 8 rotates together, directly scraping the dust that has clumped or bridged in the ash hopper, promoting the smooth fall of the dust and realizing the function of breaking the arch and discharging ash. The dynamic cooperation between the retaining ring 13, the extension 14, the sealing ring 16 and the middle flange 7, without affecting the rotation of the middle flange 7, constructs a multi-layer dust barrier, effectively protecting the internal transmission components from dust wear and extending the service life of the device.

[0022] like Figure 2As shown, the drive device 2 includes a gear ring 17 disposed on the outer ring of the middle flange 7. A gear 18 rotatably meshes with the gear ring 17 between the lower flange 5 and the connecting flange 10. A geared motor 19 is installed on the outer side of the sealing cover 1, located on one side of the gear 18. The output end of the geared motor 19 is connected to the gear 18 for transmission. Specifically, the gear ring 17 on the outer ring of the middle flange 7 meshes with the gear 18. The geared motor 19 on the outer side of the sealing cover 1 outputs power to drive the gear 18 to rotate. The gear 18 transmits torque to the middle flange 7 through meshing with the gear ring 17, thereby driving the middle flange 7 and the scraper assembly 9 to rotate synchronously.

[0023] like Figure 2 , Figure 4 As shown, ball bearings 20 are provided between the middle flange 7 and the upper flange 4 and lower flange 5. Specifically, the ball bearings 20 between the middle flange 7 and the upper flange 4 and lower flange 5 convert the sliding friction of the middle flange 7 during rotation into rolling friction, which greatly reduces frictional resistance and reduces energy loss when the middle flange 7 rotates, making the drive device 2 more labor-saving. At the same time, the ball bearings 20 can disperse the radial force on the middle flange 7, avoid wear caused by direct contact between the middle flange 7 and the upper and lower flanges 5, and ensure the long-term stable rotation of the middle flange 7.

[0024] like Figure 3 As shown, it also includes an upper ash hopper 21 and a lower ash hopper 22. The upper ash hopper 21 and the lower ash hopper 22 are respectively connected to the upper flange 4 and the connecting flange 10. Specifically, the upper ash hopper 21 and the lower ash hopper 22 are respectively connected to the upper flange 4 and the connecting flange 10 through flanges. The upper ash hopper 21 receives the dust falling from the deacidification tower body, and the lower ash hopper 22 is provided with an ash discharge port to receive the loose dust after the scraper breaks the arch and discharge it through the ash discharge port.

[0025] like Figure 5 As shown, the scraper assembly 9 includes a mounting plate 23, on which a connecting arm 24 is provided. One end of the connecting arm 24 is provided with an upper scraper arm 25 parallel to the inner wall of the upper ash hopper 21, and the other end is provided with a lower scraper arm 26 parallel to the inner wall of the lower ash hopper 22. Specifically, the mounting plate 23 is connected to the upper scraper arm 25 and the lower scraper arm 26 respectively through the connecting arm 24. The upper scraper arm 25 is parallel to the inner wall of the upper ash hopper 21, and the lower scraper arm 26 is parallel to the inner wall of the lower ash hopper 22. When the flange 7 rotates, the upper scraper arm 25 scrapes the inner wall of the upper ash hopper 21 to remove the accumulated ash clumps at the bottom of the upper ash hopper 21; the lower scraper arm 26 scrapes the inner wall of the lower ash hopper 22 to break up the dust bridging at the top of the lower ash hopper 22. The two work together to eliminate dust residue and clumps in different areas of the inner wall of the ash hopper.

[0026] In practical use, during operation, the drive device 2 drives the middle flange 7 to rotate between the upper flange 4 and the lower flange 5. The scraper on the inner ring mounting seat 8 of the middle flange 7 rotates synchronously with it, scraping the clumps of dust in the ash hopper to break up the "blockage". At the same time, during the rotation of the middle flange 7, the retaining ring 13 on it always abuts against the inner extension 14 of the upper flange 4, forming a dynamic barrier to prevent dust from entering from the upper gap. The sealing ring 16 in the inner groove 15 of the connecting flange 10 always fits tightly against the outer side of the middle flange 7, filling the lower gap through elastic deformation and blocking the path of dust entering from below. The sealing cover 1 introduces low-pressure clean gas through the air inlet 3 to form a slight positive pressure, further preventing external dust from entering the cover. Together with the retaining ring 13 and the sealing ring 16, it forms a multi-layered dust barrier.

[0027] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A device for breaking arches in the ash hopper of a deacidification tower, characterized in that: Includes a sealing cover (1) and a driving device (2). The sealing cover (1) is provided with an air inlet (3). The sealing cover (1) is provided with an upper flange (4) and a lower flange (5). The upper flange (4) and the lower flange (5) are detachably locked by a first bolt (6). A middle flange (7) is rotatably provided between the upper flange (4) and the lower flange (5). The middle flange (7) is connected to the driving device (2). The inner ring of the middle flange (7) is provided with a mounting seat (8) at intervals. The mounting seat (8) is provided with a scraper assembly (9). A connecting flange (10) is provided below the lower flange (5). The connecting flange (10) and the lower flange (5) are detachably locked by the second bolt (11). A bushing (12) is fitted on the second bolt (11) between the connecting flange (10) and the lower flange (5). A retaining ring (13) is fixedly provided on the middle flange (7). An extension (14) is provided on the inner side of the upper flange (4) corresponding to the position of the retaining ring (13). The retaining ring (13) and the extension (14) abut against each other. A slot (15) is opened on the inner side of the connecting flange (10). A sealing ring (16) that abuts against the outer side of the middle flange (7) is installed in the slot (15).

2. The deacidification tower ash hopper arch-breaking device according to claim 1, characterized in that: The drive device (2) includes a gear ring (17) disposed on the outer ring of the middle flange (7), and a gear (18) rotatably meshing with the gear ring (17) is provided between the lower flange (5) and the connecting flange (10). A geared motor (19) is installed on the outer side of the sealing cover (1) on one side of the gear (18), and the output end of the geared motor (19) is connected to the gear (18) for transmission.

3. The deacidification tower ash hopper arch-breaking device according to claim 1, characterized in that: Ball bearings (20) are provided between the middle flange (7) and the upper flange (4) and the lower flange (5).

4. The deacidification tower ash hopper arch-breaking device according to claim 1, characterized in that: It also includes an upper ash hopper (21) and a lower ash hopper (22), which are respectively connected to an upper flange (4) and a connecting flange (10).

5. The deacidification tower ash hopper arch-breaking device according to claim 4, characterized in that: The scraper assembly (9) includes a mounting plate (23), on which a connecting arm (24) is provided. One end of the connecting arm (24) is provided with an upper scraper arm (25) parallel to the inner wall of the upper ash hopper (21), and the other end is provided with a lower scraper arm (26) parallel to the inner wall of the lower ash hopper (22).

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