Disc pelletizer flue gas purification device

Abstract

This utility model relates to the field of flue gas purification technology, specifically disclosing a flue gas purification device for a disc pelletizing machine. The device includes a main body comprising a housing, an air inlet pipe connected to one side of the bottom of the housing, and an exhaust fan located on the other side of the top of the housing. A bottom frame is connected to the bottom of the housing. A dust removal mechanism includes a dust collection hopper and a dust discharge pipe connected to the bottom of the dust collection hopper. A first connecting frame is connected to the top of the dust collection hopper, and a second connecting frame is connected to the top of the first connecting frame via a corrugated square tube. The second connecting frame is connected to the bottom frame, and a spring connects the first and second connecting frames. This utility model can collect and purify flue gas. Dust only contacts the smooth inner walls of the dust collection hopper and dust discharge pipe throughout the process, and no precision parts are covered or stuck by dust. When enhanced dust removal is required, the flexibility of the corrugated square tube and the elasticity of the spring are used to achieve shaking, eliminating the need for an internal drive structure and improving the reliability of continuous operation of the device.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification technology, specifically a flue gas purification device for a disc pelletizing machine. Background Technology

[0002] Acidic pellets are a high-quality raw material for iron and steel smelting. By studying the sintering process of acidic pellets with high-sulfur iron concentrate, the resource utilization of high-sulfur iron concentrate can be realized, reducing raw material costs. Simultaneously, if the quality of the sintered ore can be stabilized (e.g., strength, reducibility), it provides green and efficient ore blending process support for iron and steel enterprises. Adding high-sulfur concentrate without affecting the quality of acidic pellets reduces pellet costs, meets pellet consumption reduction targets, lowers production costs, and improves product quality and production efficiency. Disc pelletizers are disc-shaped pelletizing devices that form fine powder into spherical materials with particle sizes meeting the requirements of the next process. They are used in the production of iron ore pellets in the metallurgical industry and in the pelletizing of non-ferrous metal mixed concentrates, improving the technical and economic indicators of smelting. Under the combined action of gravity, centrifugal force, and friction, the granulated material rolls and rubs in an inclined rotating disc. After adding an appropriate amount of water, mother pellets are formed. The fine particles roll on the moist surface of the mother pellets, causing them to grow and acquire a certain strength. During the use of disc pelletizing machines, flue gas is generated, which contains iron oxides, silicon dioxide, etc. The dust-laden gas generated by the disc pelletizing machine needs to be treated in a timely manner. Dry dust removal technology is usually used because the gas temperature is not high and the humidity is not high.

[0003] The dust collection device of a pulse dust collector disclosed in the existing patent publication number CN223439449U includes a housing with an air outlet, an air inlet pipe connected to one side of the housing, a dust collection component installed inside the housing, a dust hopper connected to the lower end of the housing, a movable plate installed inside the dust hopper, a motor installed at the lower end of the movable plate, a rotating rod fixedly connected to the output end of the motor, a scraper connected to the upper end of the rotating rod, a scraper blade fixedly connected to the scraper blade, a collection cylinder connected to the lower end of the dust hopper, and support plates symmetrically arranged in the collection cylinder. The support plates are connected to the movable plate through support rods. After dust removal, the dust falling onto the dust hopper is stirred to accelerate the rate at which the dust enters the collection cylinder, while the dust adhering to the inner wall is scraped off.

[0004] The aforementioned device can collect and discharge dust after pulse dust removal. However, the presence of components such as motors and support rods inside the collection bin allows dust to enter and affect operation. Furthermore, the excessive internal structure hinders subsequent maintenance and the continued use of the device. To address these issues, a flue gas purification device for disc pelletizers is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a flue gas purification device for a disc pelletizing machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Flue gas purification device for disc pelletizer, including

[0008] The main body of the device includes a housing, an air inlet pipe connected to one side of the bottom of the housing, and an exhaust fan installed on the other side of the top of the housing. The bottom of the housing is connected to a bottom frame.

[0009] A dust removal mechanism includes a dust collection hopper and a dust removal pipe connected to the bottom of the dust collection hopper. The top of the dust collection hopper is connected to a first connecting frame. The top of the first connecting frame is connected to a second connecting frame through a corrugated square tube. The second connecting frame is connected to a bottom frame. A spring is connected between the first connecting frame and the second connecting frame. A limiting member is also connected between the first connecting frame and the second connecting frame.

[0010] The purification mechanism, installed inside the enclosure, is used for flue gas purification; and

[0011] The backflushing mechanism is installed on the housing and is used to backflush and clean the purification unit.

[0012] In one alternative: the limiting component includes a limiting screw, and the first connecting frame, the second connecting frame and the bottom frame are all provided with through holes for the limiting screw to pass through, and the top end of the limiting screw is threadedly connected to a limiting nut placed on the top of the bottom frame.

[0013] In one alternative: springs are connected to the four corners of the top of the first connecting frame.

[0014] In one alternative embodiment: the purification mechanism includes a mounting frame connected to the inner wall of the chamber, a mounting plate slidably mounted on the mounting frame, and the mounting frame having a mounting opening for sliding the mounting plate. One end of the mounting opening communicates with the outside for removing the mounting plate. A filter bag is mounted on the bottom of the mounting plate. A detachable door is connected to one side of the chamber, and a limiting strip is connected to one side of the door, which abuts against one side of the mounting frame to restrict the sliding of the mounting plate.

[0015] In one alternative: the backflushing mechanism includes a pulse assembly and a blowpipe, the pulse assembly is installed inside the housing and placed on top of the mounting frame, the bottom air outlet of the blowpipe corresponds to the top opening of the filter bag, and the pulse assembly is installed outside the housing.

[0016] In one alternative: the door is fixed to the opening side of the box body by bolts, and a handle is connected to the side of the door away from the box body.

[0017] In one alternative: a support frame is connected to the bottom of the housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention can collect and purify flue gas. After the dust falls, it only comes into contact with the smooth inner walls of the dust collection hopper and dust discharge pipe. No precision parts can be covered or stuck by dust. When it is necessary to strengthen the dust removal, the flexibility of the corrugated square tube and the elasticity of the spring are used to achieve shaking. No internal drive structure is required, which improves the reliability of continuous operation of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of a partial disassembly and assembly structure of the present invention.

[0022] Figure 3 This is a schematic diagram of the dust removal mechanism in this utility model.

[0023] Figure 4 This is a schematic diagram of the internal structure of the main body of the device in this utility model.

[0024] In the diagram: 1. Main body of the device; 2. Dust removal mechanism; 3. Purification mechanism; 4. Back-blowing mechanism; 11. Box body; 12. Box door; 13. Air inlet pipe; 14. Exhaust fan; 15. Base frame; 16. Support frame; 21. Dust collection hopper; 22. Dust discharge pipe; 23. First connecting frame; 24. Corrugated square tube; 25. Second connecting frame; 26. Spring; 27. Limiting screw; 31. Mounting bracket; 32. Mounting plate; 33. Filter bag; 41. Pulse assembly; 42. Blow-off pipe. Detailed Implementation

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[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] Please see Figures 1-4 In this embodiment, the flue gas purification device for the disc pelletizer includes:

[0028] The main body of the device 1 includes a housing 11, an air inlet pipe 13 connected to one side of the bottom of the housing 11, and an exhaust fan 14 disposed on the other side of the top of the housing 11. The bottom of the housing 11 is connected to a bottom frame 15. After the exhaust fan 14 is started, a negative pressure environment is formed inside the housing 11. The dust-laden flue gas generated by the disc pelletizing machine enters the housing 11 through the air inlet pipe 13 under the action of negative pressure.

[0029] The dust removal mechanism 2 includes a dust collection hopper 21 and a dust removal pipe 22 connected to the bottom of the dust collection hopper 21. The top of the dust collection hopper 21 is connected to a first connecting frame 23. The top of the first connecting frame 23 is connected to a second connecting frame 25 through a corrugated square tube 25. The second connecting frame 25 is connected to the bottom frame 15. A spring 26 is connected between the first connecting frame 23 and the second connecting frame 25. A limiting member is also connected between the first connecting frame 23 and the second connecting frame 25.

[0030] Purification mechanism 3 is installed inside housing 11 for flue gas purification;

[0031] And a backflushing mechanism 4, which is installed on the housing 11 for backflushing and cleaning the purification mechanism 3.

[0032] Please see Figure 3 The limiting component includes a limiting screw 27. The first connecting frame 23, the second connecting frame 25, and the bottom frame 15 are all provided with through holes for the limiting screw 27 to pass through. The top end of the limiting screw 27 is threadedly connected to a limiting nut placed on the top of the bottom frame 15. Through the cooperation of the limiting screw 27 and the limiting nut, the connection between the first connecting frame 23, the second connecting frame 25, and the bottom frame 15 can be realized, and the floating range between the first connecting frame 23 and the second connecting frame 25 can be limited.

[0033] Please see Figure 3 Springs 26 are connected to the four corners of the top of the first connecting frame 23 to provide stable cushioning.

[0034] Please see Figure 2The purification mechanism 3 includes a mounting frame 31 connected to the inner wall of the housing 11. A mounting plate 32 is slidably mounted on the mounting frame 31, and the mounting frame 31 is provided with a mounting port for sliding the mounting plate 32. One end of the mounting port is connected to the outside for removing the mounting plate 32. A filter bag 33 is installed at the bottom of the mounting plate 32. A detachable door 12 is connected to one side of the housing 11. A limiting strip is connected to one side of the door 12 and abuts against one side of the mounting frame 31 to restrict the sliding of the mounting plate 32. Specifically, the dust-laden flue gas entering the housing 11 flows upward and is filtered by the filter bag 33. The dust particles in the flue gas are intercepted by the filter bag fibers and adhere to the outer surface of the filter bag 33. The purified clean flue gas passes through the inside of the filter bag 33 and is finally extracted from the housing by the exhaust fan 14. When the filter bag 33 needs to be replaced, the mounting plate 32 can be directly removed from the mounting port after opening the door 12, which is convenient.

[0035] Please see Figure 1 and 4 The backflush mechanism 4 includes a pulse assembly 41 and a blow pipe 42. The pulse assembly 41 is installed in the housing 11 and built into the top of the mounting bracket 31. The bottom air outlet of the blow pipe 42 corresponds to the top opening of the filter bag 33. The pulse assembly 41 is installed outside the housing 11. The pulse assembly 41 includes an existing pulse valve and an air tank. High-pressure gas can be blown out from the blow pipe 42 during operation.

[0036] Please see Figure 1 The door 12 is fixed to the opening side of the box body 11 by bolts, and a handle is connected to the side of the door 12 away from the box body 11; this facilitates the removal of the door 12 for the inspection or replacement of the internal components of the box body 11.

[0037] Please see Figure 2 The bottom of the housing 11 is connected to a support frame 16, which provides stable support for the entire device.

[0038] The working principle of this utility model is as follows: After the exhaust fan 14 is started, a negative pressure environment is formed inside the housing 11. The dust-laden flue gas generated by the disc pelletizing machine enters the housing 11 through the air inlet pipe 13 under the action of negative pressure. The dust-laden flue gas entering the housing 11 flows upward and is filtered by the filter bag 33. The dust particles in the flue gas are intercepted by the filter bag fibers and adhere to the outer surface of the filter bag 33. The purified clean flue gas passes through the inside of the filter bag 33 and is finally extracted out of the housing by the exhaust fan 14. When the filter bag 33 needs to be replaced, the mounting plate 32 can be directly removed from the mounting port after opening the housing door 12, which is convenient to operate.

[0039] As filtration time increases, dust gradually accumulates on the outer surface of filter bag 33, causing a decrease in the air permeability of filter bag 33, requiring dust removal. Pulse assembly 41 starts according to a set cycle, generating high-pressure air and delivering it to blowpipe 42. The high-pressure air is quickly injected into the interior of filter bag 33 through the air outlet. The high-pressure airflow causes filter bag 33 to expand and vibrate instantly, shaking off the dust adhering to the outer surface of filter bag 33. The shaken-off dust needs to be collected and discharged through dust removal mechanism 2. The dust shaken off from filter bag 33 falls into dust collection hopper 21 under the action of gravity. The dust in dust collection hopper 21 gradually accumulates and is eventually discharged through dust discharge pipe 22 at the bottom.

[0040] If dust residue remains on the inner wall of the dust collection hopper 21 and cannot be removed by regular dust removal, the limiting screw 27 is removed. The corrugated square tube 24 is flexible and allows for a certain range of displacement. The spring 26 between the first connecting frame 23 and the second connecting frame 25 is elastic and can assist in buffering. The dust collection hopper 21 can be shaken slightly in the horizontal or vertical direction due to the cooperation of the corrugated square tube 24 and the spring 26, so that the dust residue on the inner wall is shaken off and avoids blockage. After the dust is cleaned, the limiting screw 27 is reinstalled, the dust collection hopper returns to a stable state, and regular dust removal can continue.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A disc pelletizer flue gas purification device, characterized by, include The main body of the device (1) includes a box (11), an air inlet pipe (13) connected to one side of the bottom of the box (11), and an exhaust fan (14) set on the other side of the top of the box (11). The bottom of the box (11) is connected to a bottom frame (15). The dust removal mechanism (2) includes a dust collection hopper (21) and a dust removal pipe (22) connected to the bottom of the dust collection hopper (21). The top of the dust collection hopper (21) is connected to a first connecting frame (23). The top of the first connecting frame (23) is connected to a second connecting frame (25) through a corrugated square tube (24). The second connecting frame (25) is connected to a bottom frame (15). A spring (26) is connected between the first connecting frame (23) and the second connecting frame (25). A limiting member is also connected between the first connecting frame (23) and the second connecting frame (25). The purification unit (3) is installed inside the housing (11) for flue gas purification; and The backflushing mechanism (4) is installed on the housing (11) for backflushing and cleaning the purification mechanism (3).

2. The flue gas cleaning device of a disc pelletizer according to claim 1, characterized in that: The limiting component includes a limiting screw (27). The first connecting frame (23), the second connecting frame (25) and the bottom frame (15) are all provided with through holes for the limiting screw (27) to pass through. The top end of the limiting screw (27) is threadedly connected to a limiting nut placed on the top of the bottom frame (15).

3. The flue gas cleaning device of a disc pelletizer according to claim 1, characterized in that: Springs (26) are connected to the four corners of the top of the first connecting frame (23).

4. The flue gas cleaning device of a disc pelletizer according to claim 1, characterized in that: The purification mechanism (3) includes a mounting frame (31) connected to the inner wall of the housing (11). A mounting plate (32) is slidably mounted on the mounting frame (31), and the mounting frame (31) is provided with a mounting port for sliding the mounting plate (32). One end of the mounting port is connected to the outside for removing the mounting plate (32). A filter bag (33) is installed at the bottom of the mounting plate (32). A detachable door (12) is connected to one side of the housing (11). A limiting strip is connected to one side of the door (12) and abuts against one side of the mounting frame (31) to limit the sliding of the mounting plate (32).

5. A disc pelletizer flue gas cleaning device according to claim 4, characterized in that: The backflush mechanism (4) includes a pulse assembly (41) and a blow pipe (42). The pulse assembly (41) is installed in the housing (11) and built into the top of the mounting bracket (31). The bottom air outlet of the blow pipe (42) corresponds to the top opening of the filter bag (33). The pulse assembly (41) is installed outside the housing (11).

6. The flue gas cleaning device of a disc pelletizer according to claim 4, characterized in that: The door (12) is fixed to the opening side of the box body (11) by bolts, and a handle is connected to the side of the door (12) away from the box body (11).

7. The flue gas purification device for a disc pelletizer according to claim 1, characterized in that: The bottom of the box (11) is connected to a support frame (16).

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