Air filter device for power plants

Abstract

The utility model discloses a power plant air filtering equipment relates to air handling technical field, the utility model discloses a cloth bag dust collector, and the cloth bag dust collector outer surface one side is connected with the access door, swing bolt and sealing ring respectively, and the swing bolt outside sleeve joint has locking nut, the cloth bag dust collector inside one side is provided with a plurality of mounting groove. The utility model discloses through the setting of first baffle and second baffle, first baffle is located below the air inlet side, can receive the downward trend airflow that produces because of air path elbow, bears most abrasion, thereby reduces the direct contact of cloth bag dust collector inner wall and dust impurity, reduces the inner wall abrasion probability, simultaneously, first baffle and second baffle adopt split type structure, and second baffle is less abraded, and its replacement frequency is lower than first baffle, can avoid the situation that the light abrasion area of integral structure is replaced with the abrasion serious area together, reduces the waste of part replacement, and reduces equipment operation and maintenance cost, and the easy abrasion area is protected conveniently.

Description

Technical Field

[0001] This utility model relates to the field of air treatment technology, specifically to an air filtration device for power plants. Background Technology

[0002] As a core site for energy production, power plants are prone to dust generation during operation, including the running of various equipment and material transportation. This results in a significant amount of dust particles in the air intake of the plant or equipment. If this dust-laden air directly enters the equipment or diffuses into the environment, it may not only affect the stable operation and lifespan of the equipment but also impact the surrounding air environment. Therefore, specialized air filtration equipment is necessary to purify the dust-laden air.

[0003] Air filtration is a crucial part of air treatment in power plants. Its core purpose is to remove particulate matter such as dust and impurities from the air, ensuring that the purified air meets equipment intake standards or environmental emission requirements. Currently, commonly used air filtration equipment in power plants includes baghouse dust collectors, which trap particulate matter in the airflow through internal filter bags.

[0004] In existing technologies, some baghouse dust collectors incorporate a bend in the internal airflow path to prevent direct airflow impact on the filter bags and subsequent damage. This design causes air to enter horizontally, flow downwards, and then bend upwards into the filter bag area. However, this design makes the inner wall of the equipment corresponding to the air inlet area prone to wear. Due to inertia, the airflow collides with the inner wall opposite the air inlet, and the dust and impurities carried in the airflow rub against the inner wall. After long-term use, the inner wall suffers severe wear. Existing baghouse dust collectors typically use carbon steel materials such as Q235B, which are easily damaged by wear, leading to oxidation and rust. Furthermore, repairing this worn area is difficult. If the inner wall is subsequently worn through or rusted through, the airflow will directly impact the filter bags, thus shortening their service life and affecting the air filtration effect. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an air filtration device for power plants to solve the technical problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an air filtration device for power plants, including a bag filter, wherein an inspection door, a swing bolt and a sealing ring are respectively connected to one side of the outer surface of the bag filter, and a locking nut is sleeved on the outside of the swing bolt; multiple mounting slots are provided on one side of the inside of the bag filter, and a first baffle and two second baffles are connected to one side of the multiple mounting slots through multiple sliders.

[0007] By adopting the above technical solutions, the first and second baffles can provide targeted protection for the corresponding area of ​​the air inlet of the bag filter, reducing wear on the inner wall; the inspection door, swing bolts, and locking nuts provide a convenient operating structure for subsequent replacement of the baffles; the sealing ring can fill the gap between the inspection door and the outer wall of the equipment, reducing air leakage; the mounting groove and slider provide a stable installation foundation for the baffles, and the overall structure lays the foundation for the equipment to achieve air filtration and low-loss operation and maintenance.

[0008] Furthermore, the inspection door is rotatably connected to the bag filter via a hinge, and the inspection door abuts against the sealing ring.

[0009] By adopting the above technical solution, the hinge connection enables the maintenance door to rotate flexibly, allowing operators to easily open or close the maintenance door and providing operating space for the subsequent replacement of the first and second baffles. At the same time, the maintenance door abuts against the sealing ring, which can squeeze the sealing ring when the maintenance door is closed, allowing the sealing ring to tightly fill the gap between the maintenance door and the outer wall of the equipment, reducing air leakage during equipment operation and ensuring stable airflow through the filtration path.

[0010] Furthermore, the swing bolt is rotatably connected to the bag filter, and the locking nut abuts against the inspection door.

[0011] By adopting the above technical solution, when it is necessary to open the maintenance door, the constraint on the maintenance door can be released by loosening the locking nut and rotating the swing bolt to one side; when the maintenance door is closed, the swing bolt is rotated back to its original position, and then the locking nut is tightened to make it abut against the maintenance door, which can reliably limit the maintenance door and prevent the maintenance door from being accidentally opened due to airflow impact during equipment operation, thus taking into account both operational convenience and structural stability.

[0012] Furthermore, both the first baffle and the second baffle are detachably connected to the bag filter dust collector via mounting grooves and sliders, and both the first baffle and the second baffle abut against the back of the inspection door.

[0013] By adopting the above technical solution, the disassembly and connection design allows the first and second baffles to be replaced individually after wear, avoiding the waste caused by replacing the whole baffle. The baffle abuts against the back of the maintenance door, which can provide additional support for the baffle when the maintenance door is closed, preventing the baffle from shaking slightly under the impact of airflow, ensuring the stability of the baffle's installation position inside the equipment, and improving the protection effect.

[0014] Furthermore, both the mounting groove and the slider are dovetail-shaped.

[0015] By adopting the above technical solution, on the one hand, reliable vertical support can be provided for the first baffle and the second baffle, preventing the baffle from sinking due to its own weight or slight impact of airflow; on the other hand, the lateral displacement of the baffle can be limited, preventing the baffle from shifting laterally or falling off under long-term impact of airflow; at the same time, the structure does not hinder the installation and removal of the baffle along the direction of the mounting groove, ensuring installation stability while not affecting the convenience of subsequent operation and maintenance.

[0016] Furthermore, the bag filter is connected to an air inlet and an air outlet on both sides, a dust hopper is connected to the bottom of the bag filter, a compressed air manifold is installed on one side of the top of the bag filter, and a purging pipe is connected to the top of the compressed air manifold. A dust collector bag is connected to the upper part of the inside of the bag filter.

[0017] By adopting the above technical solution, dust-laden air enters the equipment through the air inlet, and after the dust collector bags trap the particulate matter, the purified air is discharged from the air outlet. The trapped dust falls into the dust hopper under the action of gravity and is collected. When dust accumulates on the surface of the dust collector bags and affects the filtration efficiency, the compressed air manifold can spray compressed air into the dust collector bags through the purge pipeline to shake off the surface dust into the dust hopper, restore the filtration performance of the dust collector bags, and ensure the continuous and stable operation of the equipment.

[0018] Furthermore, the first baffle is located to the side and below the air intake.

[0019] By adopting the above technical solution and combining the internal air passage bend design of the equipment, the first baffle, located below the air inlet, can withstand most of the airflow impact caused by the downward trend of the airflow. This allows the dust and impurities carried in the airflow to mainly contact and rub against the first baffle, thereby reducing the direct contact between dust and impurities and the inner wall of the bag filter, reducing the probability of inner wall wear, and achieving precise protection for easily worn areas.

[0020] Furthermore, the two second baffles are located at the top and bottom of the first baffle, respectively.

[0021] By adopting the above technical solution, a small amount of airflow and dust impurities that may be missed at the top and bottom of the first baffle can be intercepted, further reducing the contact between dust impurities and the inner wall of the equipment, avoiding wear in areas not protected by the first baffle, and forming a comprehensive inner wall protection structure in conjunction with the first baffle.

[0022] Furthermore, the first and second baffles are made of 304 stainless steel.

[0023] By adopting the above technical solutions, 304 stainless steel has good corrosion resistance, which can reduce the rust and corrosion of the first and second baffles due to contact with dust, air humidity and other factors during long-term use, extend the service life of the baffles themselves, reduce the replacement frequency of the baffles due to rust damage, and further reduce equipment operation and maintenance costs.

[0024] Furthermore, handles are connected to the outer surfaces of both the first and second baffles.

[0025] By adopting the above technical solution, after opening the maintenance door, operators can easily pick up and put down the baffle by holding the handle, avoiding the inconvenience caused by the smooth surface of the baffle or dust, improving the operational efficiency of the baffle replacement process and reducing the difficulty of operation and maintenance.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model, through the setting of a first baffle and a second baffle, with the first baffle located below the air inlet, can receive the airflow that tends to move downward due to the bend in the air path, and bear most of the wear, thereby reducing the direct contact between the inner wall of the bag filter and dust and impurities, and reducing the probability of inner wall wear; at the same time, the first baffle and the second baffle adopt a split structure, the second baffle is less affected by wear, and its replacement frequency is lower than that of the first baffle, which can avoid the situation where the less worn area is replaced along with the more worn area in the overall structure, reducing the waste of component replacement, reducing equipment operation and maintenance costs; and facilitating the protection of easily worn areas;

[0028] 2. This utility model, through the design of an inspection door, a swing bolt, a locking nut, and a sealing ring, allows the inspection door to be released from its limiting position by loosening the locking nut and rotating the swing bolt to one side. Opening the inspection door facilitates the replacement of worn first and second baffles. After replacement, closing the inspection door and rotating the swing bolt and tightening the locking nut effectively limits the inspection door's position, ensuring its stability during equipment operation. Simultaneously, the sealing ring fills the gap between the inspection door and the outer wall of the bag filter, reducing air leakage during operation. Furthermore, the embedded installation of the sealing ring makes subsequent disassembly and replacement convenient. This facilitates easy disassembly and replacement.

[0029] 3. This utility model, through the setting of the mounting groove and the slider, both of which are dovetail-shaped structures, can provide reliable vertical support for the baffle, ensuring the installation stability of the baffle inside the equipment and preventing the baffle from sinking due to its own weight or slight airflow impact. On the other hand, it can limit the lateral displacement of the baffle, preventing the baffle from shifting laterally or falling off under long-term airflow impact. At the same time, this structural design does not hinder the baffle from being replaced through the maintenance door, ensuring installation stability while taking into account the convenience of subsequent operation and maintenance; and providing a stable foundation for disassembly and assembly. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0032] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the image;

[0033] Figure 4 This is a schematic diagram of the structure of this utility model during maintenance;

[0034] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point B in the image;

[0035] Figure 6 This is a schematic diagram of the explosion structure of the first baffle of this utility model.

[0036] In the diagram: 1. Baghouse dust collector; 2. Air inlet; 3. Air outlet; 4. Dust hopper; 5. Compressed air manifold; 6. Purge pipeline; 7. Dust collector bag; 8. Inspection door; 9. Swing bolt; 10. Locking nut; 11. Sealing ring; 12. Mounting groove; 13. First baffle; 14. Second baffle; 15. Sliding block; 16. Handle. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of this utility model will be described below based on its overall structure.

[0039] Example 1:

[0040] An air filtration device for power plants, such as Figures 1-6As shown, the system includes a baghouse dust collector 1. An inspection door 8, a swing bolt 9, and a sealing ring 11 are connected to one side of the outer surface of the baghouse dust collector 1. The inspection door 8 is rotatably connected to the baghouse dust collector 1 via a hinge, and the inspection door 8 abuts against the sealing ring 11. A locking nut 10 is fitted onto the outside of the swing bolt 9, which is rotatably connected to the baghouse dust collector 1. The locking nut 10 abuts against the inspection door 8. The operator can first loosen the locking nut 10 fitted onto the swing bolt 9, rotate the swing bolt 9 to one side, completely separating the swing bolt 9 from the inspection door 8, releasing the restriction on the inspection door 8, and then the operator can open the inspection door 8. Multiple mounting slots 12 are provided on one side of the inside of the baghouse dust collector 1. A first baffle 13 and two second baffles 14 are connected to one side of the multiple mounting slots 12 via multiple sliders 15. The first baffle 13 is located below the air inlet 2, and the two second baffles 14 are located on top of the first baffle 13 and below it, respectively. At the bottom, the first baffle 13 located below the air inlet 2 will absorb most of the airflow impact caused by the downward trend of the airflow. The dust and impurities carried in the airflow mainly come into contact with and rub against the first baffle 13. At the same time, the second baffles 14 at the top and bottom of the first baffle 13 play a supplementary protective role, reducing the direct contact between dust and impurities and the inner wall of the bag filter 1, and reducing the probability of wear on the inner wall. The mounting groove 12 and the slider 15 are both dovetail-shaped. The first baffle 13 and the second baffle 14 are detachably connected to the bag filter 1 through the mounting groove 12 and the slider 15. The first baffle 13 and the second baffle 14 abut against the back of the inspection door 8. The baffle is connected to the dovetail-shaped mounting groove 12 inside the bag filter 1 through the dovetail-shaped slider 15. During disassembly and assembly, the dovetail structure can provide reliable vertical support for the baffle, preventing the baffle from shifting and sinking when it is picked up and put down, and can also limit the lateral displacement of the baffle to prevent it from falling off, taking into account both the convenience of disassembly and assembly and stability.

[0041] See Figures 1-4 In the above embodiment, the bag filter 1 is connected to an air inlet 2 and an air outlet 3 on both sides, respectively. A dust hopper 4 is connected to the bottom of the bag filter 1, and a compressed air manifold 5 is installed on one side of the top of the bag filter 1. A purge pipe 6 is connected to the top of the compressed air manifold 5. A dust collector bag 7 is connected to the upper part of the bag filter 1. After the airflow reaches the area of ​​the dust collector bag 7, the dust collector bag 7 will intercept and filter the dust and impurities in the airflow to achieve air purification. The purified air is discharged from the air outlet 3. The intercepted dust will fall naturally under the action of gravity and eventually collect in the dust hopper 4 at the bottom of the bag filter 1. When there is a lot of dust on the surface of the dust collector bag 7, which affects the filtration efficiency, the compressed air manifold 5 at the top of the bag filter 1 will spray compressed air into the dust collector bag 7 through the purge pipe 6 to shake the dust on the surface of the bag into the dust hopper 4, thereby restoring the filtration performance of the dust collector bag 7 and ensuring the continuous and stable operation of the equipment.

[0042] Example 2:

[0043] Based on the above embodiment one, in order to extend service life and reduce corrosion, the following settings are now implemented.

[0044] See Figure 2 , Figure 3 , Figure 4 and Figure 6 In the above embodiments, the first baffle 13 and the second baffle 14 are made of 304 stainless steel. The use of 304 stainless steel for the first baffle 13 and the second baffle 14 can reduce rust and corrosion during long-term use and extend the service life of the baffles themselves.

[0045] Example 3:

[0046] Based on the above embodiment one, the following settings are now adopted to facilitate disassembly.

[0047] See Figure 4 and Figure 6 In the above embodiment, the outer surfaces of the first baffle 13 and the second baffle 14 are both connected to handles 16, which allow staff to easily pick up and put down the first baffle 13 and the second baffle 14.

[0048] The implementation principle of this utility model is as follows: First, dust-laden air enters the bag filter 1 through the air inlet 2. Following the existing air path design, the air enters horizontally and then flows downwards due to the bend in the air path structure. It then turns and flows upwards to the area where the dust collector bag 7 is located, thereby reducing the damage caused by the direct impact of the air on the dust collector bag 7. During this process, the first baffle 13 located below the air inlet 2 will absorb most of the airflow impact caused by the downward trend of the airflow. The dust and impurities carried in the airflow mainly come into contact with and rub against the first baffle 13. At the same time, the second baffles 14 at the top and bottom of the first baffle 13 play a supplementary protective role, reducing the direct contact between dust and impurities and the inner wall of the bag filter 1, and reducing the probability of wear on the inner wall. Moreover, the first baffle 13 and the second baffle 14 are made of 304 stainless steel, which can reduce rust and corrosion during long-term use and extend the service life of the baffles themselves. The split structure of the two also means that only the severely worn first baffle 13 needs to be replaced, while the less worn second baffle 14 can continue to be used, avoiding the waste caused by replacing the whole thing and reducing the equipment operation and maintenance costs.

[0049] Subsequently, after the airflow reaches the area of ​​the dust collector bag 7, the dust collector bag 7 will intercept and filter the dust and impurities in the airflow to achieve air purification. The purified air is discharged from the air outlet 3. The intercepted dust will fall naturally under the action of gravity and eventually collect in the ash hopper 4 at the bottom of the bag dust collector 1. When there is a lot of dust on the surface of the dust collector bag 7, which affects the filtration efficiency, the compressed air tank 5 at the top of the bag dust collector 1 will spray compressed air into the dust collector bag 7 through the blow pipe 6 to shake the dust on the surface of the bag into the ash hopper 4, thereby restoring the filtration performance of the dust collector bag 7 and ensuring the continuous and stable operation of the equipment.

[0050] When the first baffle 13 or the second baffle 14 needs to be replaced due to long-term wear, the operator can first loosen the locking nut 10 that is sleeved with the swing bolt 9, rotate the swing bolt 9 to one side, so that the swing bolt 9 is completely separated from the inspection door 8, and the restriction on the inspection door 8 is released. Then the operator can open the inspection door 8. At this time, the operator can easily pick up and put down the first baffle 13 and the second baffle 14 through the handle 16. The baffle is connected to the dovetail-shaped mounting groove 12 inside the bag dust collector 1 through the dovetail-shaped slider 15. During the disassembly and assembly process, the dovetail structure can not only provide reliable vertical support for the baffle, preventing the baffle from shifting and sinking when picking up and putting down, but also limit the movement of the baffle. Lateral displacement of the baffle plate prevents it from falling off, balancing ease of disassembly and assembly with stability. After the baffle plate is replaced, the operator reverses and closes the inspection door 8, rotates the swing bolt 9 to reset it, and then tightens the locking nut 10, which effectively limits the inspection door 8 and prevents it from opening accidentally during equipment operation. At the same time, the sealing ring 11 between the inspection door 8 and the outer wall of the bag filter 1 fills the gap between them, reducing air leakage during equipment operation and ensuring stable airflow through the filtration path. If the sealing ring 11 ages and is damaged, it can also be easily replaced by embedding, further ensuring the sealing performance and operational stability of the equipment.

[0051] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An air filtration device for power plants, comprising a bag filter (1), characterized in that: The outer surface of the bag dust collector (1) is connected to an inspection door (8), a swing bolt (9) and a sealing ring (11), and a locking nut (10) is sleeved on the outside of the swing bolt (9); the bag dust collector (1) has multiple mounting slots (12) on one side inside, and the multiple mounting slots (12) are connected to a first baffle (13) and two second baffles (14) by multiple sliders (15) on one side.

2. The air filtration equipment for power plants according to claim 1, characterized in that: The inspection door (8) is rotatably connected to the bag filter (1) via a hinge, and the inspection door (8) abuts against the sealing ring (11).

3. The air filtration equipment for power plants according to claim 2, characterized in that: The swing bolt (9) is rotatably connected to the bag filter (1), and the locking nut (10) abuts against the inspection door (8).

4. The air filtration equipment for power plants according to claim 3, characterized in that: The first baffle (13) and the second baffle (14) are both detachably connected to the bag filter (1) through the mounting groove (12) and the slider (15), and the first baffle (13) and the second baffle (14) are both in contact with the back of the inspection door (8).

5. The air filtration equipment for power plants according to claim 4, characterized in that: Both the mounting groove (12) and the slider (15) are dovetail-shaped.

6. The air filtration equipment for power plants according to claim 1, characterized in that: The bag filter (1) is connected to an air inlet (2) and an air outlet (3) on both sides respectively. The bottom of the bag filter (1) is connected to a dust hopper (4). A compressed air manifold (5) is installed on one side of the top of the bag filter (1), and a blow pipe (6) is connected to the top of the compressed air manifold (5). A dust collector bag (7) is connected to the upper part of the inside of the bag filter (1).

7. The air filtration equipment for power plants according to claim 6, characterized in that: The first baffle (13) is located on the side below the air inlet (2).

8. The air filtration equipment for power plants according to claim 7, characterized in that: The two second baffles (14) are located at the top and bottom of the first baffle (13), respectively.

9. The air filtration equipment for power plants according to claim 8, characterized in that: The first baffle (13) and the second baffle (14) are made of 304 stainless steel.

10. The air filtration equipment for power plants according to claim 9, characterized in that: The outer surfaces of the first baffle (13) and the second baffle (14) are both connected to handles (16).

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