A filter bag singeing device

Abstract

The utility model discloses a filter bag singeing device, and the filter bag has first face and second face, the first face with the second face enclose the outer periphery surface under the filter bag deflated state, the singeing device is configured to carry out high temperature treatment to the outer periphery surface of filter bag, the singeing device includes first burner and second burner, the first burner with the second burner all have the flame spraying port for spraying flame, the flame spraying port of first burner is opposite with the flame spraying port of second burner and interval arrangement, in the utility model, can through the cooperation of the flame spraying port of first burner and the flame spraying port of second burner, realize the agglomerate of the first face of filter bag and carry out flame high temperature treatment, specifically, directly guide filter bag through the passage, when filter bag passes, the flame spraying port of first burner and the flame spraying port of second burner spray flame simultaneously, make the fiber on the surface of filter bag be burnt, this can make the agglomerate on the fiber be removed.

Description

Technical Field

[0001] This utility model relates to the field of filter bag technology, and specifically to a filter bag singeing device. Background Technology

[0002] As the core component of baghouse dust collectors, the performance of filter bags directly affects the dust removal efficiency and even the operational stability of the entire system, especially in industrial fields involving high-temperature and high-polluting gases such as power, cement, steel, and chemical industries.

[0003] In actual operation, dust-laden flue gas will pass through the surface of the filter bag, and the dust will be captured to form a dust layer, while clean gas will pass through the filter material and enter the interior of the filter bag.

[0004] However, when processing flue gas with complex compositions, especially those containing sulfur dioxide (SO2) and water vapor (H2O), if the flue gas temperature drops below the dew point, the water vapor will condense into liquid water droplets. These water droplets may combine with SO2 in the flue gas to form acidic substances, and after mixing with dust, they easily adhere to the surface of the filter bag fibers, forming agglomerates.

[0005] When the dust collector's built-in cleaning system removes these clumps of dust by blowing air, some fibers are pulled out of the filter bags. Over time, this can cause a rough surface to form on the filter bags. This rough surface increases the surface area of ​​the filter bags, making it extremely difficult to remove accumulated dust and making condensation more likely. Ultimately, this leads to clogging and increased resistance on the filter bag surface, negatively impacting the unit's operation.

[0006] Therefore, eliminating the roughness on the surface of the filter bag becomes very important, and how to solve the shortcomings of the existing technology mentioned above is the subject of this invention. Utility Model Content

[0007] The purpose of this invention is to provide a filter bag singeing device.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A filter bag singeing device is disclosed. The filter bag has a first side and a second side, which together form the outer peripheral surface of the filter bag in a collapsed state. The singeing device is configured to perform high-temperature treatment on the outer peripheral surface of the filter bag. The singeing device includes a first burner and a second burner. Both the first burner and the second burner have nozzles for ejecting flames. The nozzles of the first burner and the second burner are opposite to each other and spaced apart to form a channel for the filter bag to pass through. The extension lines of the first burner and the second burner in the length direction are parallel. The width of the channel is greater than the thickness of the filter bag.

[0010] The first surface and the second surface, one of which is directly opposite the flame nozzle of the first burner, and the other is directly opposite the flame nozzle of the second burner.

[0011] In the above scheme, the agglomerates on the first and second sides of the filter bag can be subjected to high-temperature flame treatment by coordinating the flame nozzles of the first and second burners.

[0012] Specifically, the filter bag is directly guided through the channel. As the filter bag passes through, the flames from the nozzles of the first and second burners simultaneously spray flames, which burns off the fibers on the surface of the filter bag, thus removing the clumps on the fibers.

[0013] In a further technical solution, the singeing device also includes a support frame.

[0014] The first burner and the second burner are arranged sequentially from top to bottom on the support frame. In the horizontal plane, the extension line of the support frame in the length direction is perpendicular to the first burner and the second burner in the length direction.

[0015] The first burner and the second burner are positioned and connected by a connecting rod, and the upper surface of the support frame is a filter bag conveying surface, which is arranged in relation to the channel.

[0016] The aforementioned design ensures that the support frame provides stable support for both the first and second burners, maintaining their precise relative positions under high-temperature conditions. The connecting rod's positioning effectively prevents flame nozzle misalignment caused by thermal deformation, ensuring a constant channel width and smooth passage of the filter bags. The conveyor surface is perpendicular to the burner's extension direction, ensuring the filter bag's travel direction is orthogonal to the flame's action surface, maximizing effective singeing time and improving processing uniformity.

[0017] In a further technical solution, the width of the conveying surface is less than or equal to the length of the channel.

[0018] The width of the conveying surface is preferably less than the length of the channel to prevent the filter bag from shifting during the conveying process and to ensure that it passes through the channel stably along the predetermined path.

[0019] In a further technical solution, two conveyor belts are provided on the support frame. These two conveyor belts are spaced apart along the length of the support frame, and the upper surfaces of these two conveyor belts are combined to form the conveying surface.

[0020] The first burner and the second burner are positioned between the two conveyor belts.

[0021] With the above design, the first and second burners are installed between two conveyor belts, ensuring that the flame nozzles of the two burners are directly facing the first and second surfaces, respectively, avoiding obstruction. Synchronized operation of the conveyor belts ensures stable movement of the filter bags, allowing them to undergo high-temperature flame treatment during transit.

[0022] A further technical solution involves using the height of the support frame as a reference, with the nozzle of the second burner located lower than the location of the conveying surface.

[0023] The above design prevents the filter bag surface from moving directly along the surface of the flame nozzle on the second burner, avoiding scratching and damage between the filter bag and the flame nozzle. Simultaneously, it ensures upward convection of the flame onto the lower surface of the filter bag, achieving uniform singeing. The first burner is located above, with its flame nozzle directly facing the upper surface of the filter bag. Combined with the downward flame from the second burner, this creates counter-current heating, allowing both sides of the filter bag to be processed simultaneously, improving efficiency and consistency.

[0024] In a further technical solution, the two conveyor belts are symmetrically arranged with reference to the line connecting the midpoints of the two sides of the support frame along its length.

[0025] The above design ensures uniform stress on both conveyor belts, resulting in smooth operation and effectively reducing vibration and wear caused by uneven loading. Simultaneously, the symmetrical design optimizes the spatial layout between the burner and the conveyor belts, facilitating maintenance and cleaning, and improving the overall reliability and service life of the equipment.

[0026] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0027] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0028] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0029] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing this case.

[0030] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0031] The working principle and advantages of this utility model are as follows:

[0032] In this invention, the agglomerates on the first and second sides of the filter bag can be subjected to high-temperature flame treatment by cooperating with the flame nozzles of the first and second burners.

[0033] Specifically, the filter bag is directly guided through the channel. As the filter bag passes through, the flames from the nozzles of the first and second burners simultaneously spray flames, which burns off the fibers on the surface of the filter bag, thus removing the clumps on the fibers.

[0034] In summary, this invention utilizes the opposing flame spraying operation of the first and second burners to ensure that the flame evenly covers the surface of the filter bag, effectively removing fiber burrs and adhering clumps, while avoiding localized overheating that could damage the base fabric. Attached Figure Description

[0035] Appendix Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0036] Appendix Figure 2 This is a schematic diagram of the cross-sectional structure of the first burner and the second burner in an embodiment of this utility model.

[0037] In the attached diagrams above: 1. First burner; 11. Flame nozzle;

[0038] 2. Second burner;

[0039] 3. Support frame; 31. Conveyor belt; 311. Conveying surface. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0041] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0042] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0043] See appendix Figures 1-2As shown, a filter bag singeing device is disclosed. The filter bag has a first side and a second side, which together form the outer peripheral surface of the filter bag in a collapsed state. The singeing device is configured to perform high-temperature treatment on the outer peripheral surface of the filter bag. The singeing device includes a first burner 1 and a second burner 2. Both the first burner 1 and the second burner 2 have flame nozzles 11 for ejecting flames. The flame nozzles 11 of the first burner 1 and the flame nozzles 11 of the second burner 2 are opposite to each other and spaced apart to form a channel for the filter bag to pass through. The extension lines of the first burner 1 and the second burner 2 in the length direction are parallel. The width of the channel is greater than the thickness of the filter bag.

[0044] The first surface and the second surface, one of which is directly opposite the flame nozzle 11 of the first burner 1, and the other is directly opposite the flame nozzle 11 of the second burner 2.

[0045] In this invention, the first burner 1 and the second burner 2 have the same structure. When in use, natural gas can be introduced to make the flame ejected from the flame nozzle 11.

[0046] Filter bags can be in a full state or a collapsed state, and the filter bag singeing device is designed for filter bags in the collapsed state.

[0047] In this invention, the width of the channel is greater than the thickness of the filter bag in order to prevent the surface of the filter bag from being scraped by the surface of the flame nozzle 11, so that the flame cannot perform high-temperature treatment on the agglomerates on the first side.

[0048] In this invention, the length of the channel needs to be greater than the width of the filter bag. Only in this way can the filter bag be fully treated by high temperature. If the length of the channel is too small, the filter bag cannot pass through normally.

[0049] In this invention, the agglomerates on the first and second sides of the filter bag can be subjected to high-temperature flame treatment by the cooperation of the flame nozzle 11 of the first burner 1 and the flame nozzle 11 of the second burner 2.

[0050] Specifically, the filter bag is directly guided through the channel. As the filter bag passes through, the flame nozzles 11 of the first burner 1 and the flame nozzles 11 of the second burner 2 simultaneously emit flames, which burns off the fibers on the surface of the filter bag, thus removing the clumps on the fibers.

[0051] In summary, this invention utilizes the opposing flame spraying operation of the first burner 1 and the second burner 2 to ensure that the flame evenly covers the surface of the filter bag, effectively removing fiber burrs and adhering agglomerates while avoiding localized overheating that could damage the base fabric. The high-temperature treated filter bag surface is smooth and dense, significantly reducing the probability of dust adhesion and improving air permeability and dust removal efficiency.

[0052] In a further technical solution, the singeing device also includes a support frame 3, on which the first burner 1 and the second burner 2 are arranged sequentially from top to bottom. In the horizontal plane, the extension line of the support frame 3 in the length direction is perpendicular to the extension lines of the first burner 1 and the second burner 2 in the length direction.

[0053] The first burner 1 and the second burner 2 are positioned and connected by a connecting rod. The upper surface of the support frame 3 is a filter bag conveying surface 311, which is set in accordance with the channel.

[0054] With the above design, the support frame 3 not only provides stable support for the first burner 1 and the second burner 2, but also ensures that they maintain precise relative positions under high-temperature conditions. The positioning connection of the connecting rod effectively prevents the flame nozzle 11 from shifting due to thermal deformation, ensuring a constant channel width and allowing the filter bag to pass smoothly. The conveying surface 311 is arranged perpendicular to the extension direction of the burner, ensuring that the filter bag's travel direction is orthogonal to the flame action surface, maximizing the effective singeing time and improving processing uniformity.

[0055] In a further technical solution, the width of the conveying surface 311 is less than or equal to the length of the channel.

[0056] The width of the conveying surface 311 is preferably less than the length of the channel to prevent the filter bag from shifting during the conveying process and to ensure that it passes through the channel stably along the predetermined path.

[0057] In a further technical solution, two conveyor belts 31 are provided on the support frame 3. These two conveyor belts 31 are spaced apart along the length direction of the support frame 3, and the upper surfaces of these two conveyor belts 31 are combined to form the conveying surface 311.

[0058] The first burner 1 and the second burner 2 are disposed between the two conveyor belts 31.

[0059] It should be noted that the first surface and the second surface together form the outer peripheral surface of the filter bag in its collapsed state. The filter bag at this point is the filter bag placed on the two conveyor belts 31. Generally, the filter bag clumps on the outer surface of the filter bag. Then, the filter bag is collapsed, and the filter bag becomes a long strip structure. This long strip structure has a first surface and a second surface. Sometimes the filter bag clumps are on the inner surface of the filter bag. In this case, if flame treatment is required, the filter bag needs to be turned over and then collapsed into a long strip structure.

[0060] With the above design, the first burner 1 and the second burner 2 are installed between two conveyor belts 31 to ensure that the flame nozzles 11 of the two burners are directly facing the first and second surfaces, respectively, avoiding obstruction. The synchronous operation of the conveyor belts 31 ensures stable movement of the filter bags, allowing the filter bags to undergo high-temperature flame treatment during their journey.

[0061] A further technical solution involves taking the height direction of the support frame 3 as a reference, and placing the flame nozzle 11 on the second burner 2 at a position lower than the position of the conveying surface 311.

[0062] The above design prevents the filter bag surface from moving directly along the surface of the flame nozzle 11 on the second burner 2, avoiding scratching and damage between the filter bag and the flame nozzle 11. Simultaneously, it ensures upward convection of the flame onto the lower surface of the filter bag, achieving uniform singeing. The first burner 1 is located above, with its flame nozzle 11 directly facing the upper surface of the filter bag. Combined with the downward flame from the second burner 2, this creates upward and downward counter-heating, allowing both sides of the filter bag to be processed simultaneously, improving efficiency and consistency.

[0063] In a further technical solution, the two conveyor belts 31 are symmetrically arranged with the midpoint of the two sides of the support frame 3 along its length as a reference.

[0064] The above design ensures that the two conveyor belts 31 are subjected to uniform force and operate smoothly, effectively reducing vibration and wear caused by uneven loading. At the same time, the symmetrical design optimizes the spatial layout between the burner and the conveyor belts 31, facilitating maintenance and cleaning, and improving the overall reliability and service life of the equipment.

[0065] Working principle:

[0066] The filter bag is directly guided through the channel. As the filter bag passes through, the first burner 1 is positioned above, with its flame nozzle 11 facing the upper surface of the filter bag. Combined with the downward flame of the second burner 2, it forms a top-to-bottom opposing heating, allowing both sides of the filter bag to be processed simultaneously. This burns off the fibers on the surface of the filter bag, thereby removing the clumps on the fibers and effectively improving the smoothness and air permeability of the filter bag surface, ensuring stable subsequent filtration performance.

[0067] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A filter bag singeing device, wherein the filter bag has a first side and a second side, the first side and the second side forming the outer peripheral surface of the filter bag in a collapsed state, the singeing device being configured to perform high-temperature treatment on the outer peripheral surface of the filter bag, characterized in that: The singeing device includes a first burner (1) and a second burner (2). Both the first burner (1) and the second burner (2) have flame nozzles (11) for ejecting flames. The flame nozzles (11) of the first burner (1) and the flame nozzles (11) of the second burner (2) are opposite to each other and spaced apart to form a channel for the filter bag to pass through. The extension lines of the first burner (1) and the second burner (2) in the length direction are parallel. The width of the channel is greater than the thickness of the filter bag. The first surface and the second surface, one of which is directly opposite the flame nozzle (11) of the first burner (1), and the other is directly opposite the flame nozzle (11) of the second burner (2).

2. The filter bag singeing device according to claim 1, characterized in that: The singeing device also includes a support frame (3), on which the first burner (1) and the second burner (2) are arranged sequentially from top to bottom. In the horizontal plane, the extension line of the support frame (3) in the length direction is perpendicular to the first burner (1) and the second burner (2). The first burner (1) and the second burner (2) are connected by a connecting rod for positioning. The upper surface of the support frame (3) is a filter bag conveying surface (311), which is set in accordance with the channel.

3. The filter bag singeing device according to claim 2, characterized in that: The width of the conveying surface (311) is less than or equal to the length of the channel.

4. The filter bag singeing device according to claim 2, characterized in that: Two conveyor belts (31) are provided on the support frame (3). The two conveyor belts (31) are spaced apart along the length of the support frame (3), and the upper surfaces of the two conveyor belts (31) are combined to form the conveying surface (311). The first burner (1) and the second burner (2) are disposed between the two conveyor belts (31).

5. The filter bag singeing device according to claim 4, characterized in that: With the height direction of the support frame (3) as a reference, the position of the flame nozzle (11) on the second burner (2) is lower than the position of the conveying surface (311).

6. The filter bag singeing device according to claim 4, characterized in that: The two conveyor belts (31) are symmetrically arranged with reference to the line connecting the midpoints of the two sides of the support frame (3) along its length.

Images