Built-in air flow uniform device of negative pressure big cloth bag dust collector

Abstract

The utility model belongs to the field of dust remover especially relates to a built -in airflow uniform distribution device of negative pressure big cloth bag dust remover. The utility model provides a built -in airflow uniform distribution device of negative pressure big cloth bag dust remover, include, cloth bag dust remover body, one end lower side intercommunication has the air inlet pipe, airflow buffer mechanism, be located in the inner chamber lower side of cloth bag dust remover body, be used for buffering the airflow impact force of entering the inner chamber of cloth bag dust remover body, airflow buffer mechanism includes: pivot, through the middle part of limiting assembly installation in the inner chamber of cloth bag dust remover body, driving disc, fixedly connected at the bottom of pivot, the outside equidistance fixed connection of driving disc has a plurality of blades, drive the disc rotation through the blade impact by airflow, can carry out preliminary buffering and dispersion to the dust -laden airflow of entering, again through the secondary uniform distribution of uniform distribution net, can effectively improve airflow distribution uneven problem, avoid local strong airflow to wash filter bag, reduce filter bag wear and tear, prolong the life.

Description

Technical Field

[0001] This utility model belongs to the field of dust collectors, and in particular relates to a built-in airflow uniform distribution device for a negative pressure large bag dust collector. Background Technology

[0002] Currently, baghouse dust collectors use bottom inlet and side-bottom inlet methods for air intake, with bottom inlet being the most common. This means that dust-laden gas enters from the ash hopper at the bottom of the dust collector, and the airflow passes through the filter bags from bottom to top. The clean gas is collected in the upper housing and then discharged into the atmosphere through the fan and chimney.

[0003] Existing baghouse dust collectors often suffer from severe uneven airflow distribution within the dust hopper: after entering the hopper through the inlet, the dust-laden airflow, dominated by inertial force, cannot achieve uniform diffusion and instead directly impacts the rear wall of the dust collector at high speed. During this process, most of the airflow rises rapidly along the rear wall to the bag chamber, forming localized areas of strong airflow. This non-uniform flow field causes the rear filter bags to be continuously subjected to high-intensity airflow, repeatedly damaging the dust layer on the filter bag surface. The filter fibers experience localized damage due to long-term fatigue wear, significantly shortening the service life of the filter bags. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a built-in airflow equalization device for a negative pressure large bag filter dust collector. By having the blades rotate due to the impact of airflow, the incoming dust-laden airflow can be initially buffered and dispersed. Then, the airflow is further evenly distributed by the equalization net, which can effectively improve the problem of uneven airflow distribution, avoid local strong airflow from scouring the filter bag, reduce filter bag wear, and extend service life.

[0005] In view of this, the present invention provides a built-in airflow uniform distribution device for a negative pressure large bag dust collector, comprising:

[0006] The bag filter body has an air inlet pipe connected to the lower side of one end;

[0007] An airflow buffer mechanism, located on the lower side of the inner cavity of the bag filter body, is used to buffer the impact force of the airflow entering the inner cavity of the bag filter body. The airflow buffer mechanism includes:

[0008] The rotating shaft is installed in the middle of the inner cavity of the bag filter body via a limiting component;

[0009] A drive disk is fixedly connected to the bottom of the rotating shaft, and multiple blades are fixedly connected at equal intervals on the outer side of the drive disk;

[0010] The uniformly distributed mesh is installed inside the body of the bag filter and is located between the filter bag and the airflow buffer mechanism.

[0011] In this technical solution, the blades are driven by the airflow to rotate the drive disc, which can initially buffer and disperse the incoming dust-laden airflow. Then, the airflow is evenly distributed again by the uniform distribution net, which can effectively improve the problem of uneven airflow distribution, avoid local strong airflow from scouring the filter bag, reduce filter bag wear, and extend service life.

[0012] Furthermore, the limiting component includes:

[0013] A fixed plate is rotatably sleeved on the outside of the rotating shaft via a sealed bearing;

[0014] Two fixing rods are fixedly connected to the other end of the fixing plate, and the other ends of the two fixing rods are fixedly connected to the inner wall of the bag filter body.

[0015] In this technical solution, the rotating shaft is stably supported by the cooperation of the fixing plate and the fixing rod, ensuring that the drive disk and blades rotate smoothly under the impact of airflow, avoiding the impact of the airflow buffering and dispersion effect due to the shaking of the rotating shaft, and ensuring the stability of the uniform distribution of airflow.

[0016] Furthermore, the outlet end of the air inlet pipe corresponds to the edge of the blade.

[0017] In this technical solution, the airflow discharged from the intake pipe precisely impacts the blade edge, driving the blade and drive disk to rotate efficiently, enhancing the buffering and dispersion effect on the airflow, weakening the inertial force of the airflow, and preventing the airflow from directly and at high speed scouring the rear wall to form a local strong airflow.

[0018] Furthermore, the aperture size of the uniformly distributed mesh is the same, and a fixing frame is fixedly connected to the inner wall of the bag filter body above the uniformly distributed mesh. A first fixing bolt passes through the fixing frame, and the first fixing bolt is threadedly screwed to the edge mounting frame surface of the uniformly distributed mesh.

[0019] In this technical solution, the uniformly distributed mesh with the same aperture allows the airflow to pass through evenly, and the cooperation between the fixed frame and the first fixed bolt ensures that the uniformly distributed mesh is installed stably, while also facilitating the disassembly and replacement of the uniformly distributed mesh.

[0020] Furthermore, a cleaning plate is connected to the top of the rotating shaft via a disassembly assembly, and a cleaning brush is fixedly connected to one end of the cleaning plate near the uniformly distributed net, with the cleaning brush in contact with the bottom of the uniformly distributed net.

[0021] In this technical solution, the rotating shaft drives the cleaning plate and cleaning brush to rotate synchronously. The brush cleans the dust attached to the bottom of the uniform mesh, which can prevent the uniform mesh holes from clogging and ensure that the airflow can pass through the uniform mesh evenly. This avoids uneven airflow distribution caused by mesh hole clogging, thereby reducing the situation where the filter bag is washed by local strong airflow.

[0022] Furthermore, the disassembly / assembly assembly includes:

[0023] Two fixing rings are fixedly connected to the bottom two sides of the cleaning plate, and both fixing rings are attached to the outer two sides of the rotating shaft;

[0024] Two second fixing bolts are provided, each passing through one of the two fixing rings, and both second fixing bolts are threadedly connected to the bottom surface of the cleaning plate.

[0025] In this technical solution, the fixing ring can be separated from the rotating shaft by disassembling the second fixing bolt, which enables quick disassembly and assembly of the cleaning plate, facilitates the replacement or cleaning of the cleaning brush, ensures the cleaning effect, maintains the air permeability uniformity of the evenly distributed net, and indirectly protects the filter bag.

[0026] Furthermore, the cleaning brush is characterized by being a nylon brush, and the nylon brush is made of nylon material.

[0027] In this technical solution, the nylon brush has good wear resistance and toughness. When cleaning the uniformly distributed net, it can effectively remove dust without damaging the surface of the net, thus extending the service life of the brush and the net and ensuring a long-term stable cleaning effect.

[0028] The beneficial effects of this utility model are:

[0029] 1. This utility model uses the blades to drive the drive disc to rotate under the impact of airflow, which can initially buffer and disperse the incoming dust-laden airflow. Then, it is uniformly distributed again by the uniformly distributed net, which can effectively improve the problem of uneven airflow distribution, avoid local strong airflow from scouring the filter bag, reduce filter bag wear, and extend service life.

[0030] 2. This utility model uses a rotating shaft to drive the cleaning plate and cleaning brush to rotate synchronously. The brush cleans the dust attached to the bottom of the uniform mesh, which can prevent the mesh holes from becoming clogged and ensure that the airflow can pass through the uniform mesh evenly. This avoids uneven airflow distribution caused by mesh blockage and reduces the situation where the filter bag is subjected to strong local airflow. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0033] Figure 3 This is an enlarged view of section A of this utility model.

[0034] In the diagram: 1. Baghouse dust collector body; 11. Inlet pipe; 2. Distributed mesh; 21. Fixing frame; 22. First fixing bolt; 3. Drive disc; 31. Blade; 32. Rotating shaft; 4. Fixing rod; 41. Fixing plate; 5. Cleaning plate; 51. Cleaning brush; 52. Fixing ring; 53. Second fixing bolt. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0036] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0038] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0039] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0040] Example 1:

[0041] like Figure 1-2 As shown, this utility model provides a built-in airflow distribution device for a negative pressure large bag filter dust collector, including: a bag filter body 1, with an air inlet pipe 11 connected to the lower side of one end; an airflow buffer mechanism, located on the lower side of the inner cavity of the bag filter body 1, used to buffer the impact force of the airflow entering the inner cavity of the bag filter body 1, the airflow buffer mechanism including: a rotating shaft 32, installed in the middle of the inner cavity of the bag filter body 1 through a limiting component; a drive disk 3, fixedly connected to the bottom of the rotating shaft 32, with multiple blades 31 fixedly connected at equal intervals on the outer side of the drive disk 3; and a distribution net 2, installed in the inner cavity of the bag filter body 1, and located between the dust collector bag and the airflow buffer mechanism.

[0042] When the dust-laden airflow enters through the inlet pipe 11, the impact blades 31 drive the drive disc 3 and the rotating shaft 32 to rotate. The rotation of the blades 31 buffers the airflow, weakens the inertial force of the airflow, and avoids direct scouring of the rear wall. Subsequently, the airflow passes upward through the uniformly distributed net 2 and is dispersed through the mesh to form a uniform flow field, reducing the local strong airflow area, thereby reducing the wear of the filter bag caused by long-term scouring and extending its service life.

[0043] The limiting assembly includes: a fixing plate 41, which is rotatably sleeved on the outside of the rotating shaft 32 via a sealed bearing; and two fixing rods 4, which are respectively fixedly connected to the other end of the fixing plate 41, and the other end of the two fixing rods 4 are fixedly connected to the inner wall of the bag filter body 1.

[0044] The fixed plate 41 forms a radial limit on the rotating shaft 32 through the sealed bearing, and the fixed rod 4 connects the fixed plate 41 to the inner wall of the dust collector to ensure that the rotating shaft 32 maintains stable rotation under the impact of airflow, and avoids the unstable buffering and dispersion effect of the blades 31 on the airflow due to the shaking of the rotating shaft 32, thus ensuring the reliability of the initial uniform distribution of airflow.

[0045] The air outlet of the air inlet pipe 11 corresponds to the edge of the blade 31.

[0046] The airflow discharged through the intake pipe 11 acts directly on the edge of the blade 31, maximizing the use of airflow kinetic energy to drive the blade 31 to rotate, enhancing the cutting and guiding effect of the blade 31 on the airflow, effectively dispersing the airflow inertia, preventing the airflow from concentrating and rising along the rear wall, and reducing the formation of local strong airflow.

[0047] The apertures on the uniformly distributed mesh 2 are all the same size. A fixing frame 21 is fixedly connected to the inner wall of the bag dust collector body 1 above the uniformly distributed mesh 2. A first fixing bolt 22 passes through the fixing frame 21, and the first fixing bolt 22 is threadedly connected to the edge mounting frame surface of the uniformly distributed mesh 2.

[0048] The uniformly distributed net 2 with the same aperture can make the airflow form a uniformly distributed flow field; the fixed frame 21 cooperates with the first fixed bolt 22 to fix the uniformly distributed net 2 firmly, and at the same time facilitate the disassembly of the uniformly distributed net 2. Then, the uniformly distributed net 2 is disassembled at an angle from the diagonal position of the fixed frame 21, which facilitates the replacement of the damaged uniformly distributed net 2.

[0049] Example 2:

[0050] like Figure 2-3 As shown, a cleaning plate 5 is connected to the top of the rotating shaft 32 via a disassembly assembly. A cleaning brush 51 is fixedly connected to one end of the cleaning plate 5 near the uniformly distributed net 2, and the cleaning brush 51 is in contact with the bottom of the uniformly distributed net 2.

[0051] When the rotating shaft 32 rotates, it synchronously drives the cleaning plate 5 and the cleaning brush 51 to rotate. The brush continuously contacts and rubs against the bottom of the uniformly distributed mesh 2, which can promptly clean the dust attached to the mesh and prevent the mesh from being blocked, thus preventing uneven airflow. In turn, by maintaining the permeability and consistency of the uniformly distributed mesh 2, it ensures that the airflow forms a stable and uniform flow field after secondary uniform distribution, avoiding strong airflow from scouring the filter bag due to local blockage.

[0052] The disassembly and assembly assembly includes: two fixing rings 52, which are respectively fixedly connected to the bottom sides of the cleaning plate 5, and both fixing rings 52 are attached to the outer sides of the rotating shaft 32; and two second fixing bolts 53, which pass through the two fixing rings 52 respectively, and both second fixing bolts 53 are threadedly screwed to the bottom surface of the cleaning plate 5.

[0053] By loosening the second fixing bolt 53, the fixing ring 52 can be released from the constraint of the rotating shaft 32, so as to quickly separate the cleaning plate 5 from the rotating shaft 32, which makes it easy to clean or replace the cleaning brush 51. In turn, by maintaining the cleaning efficiency of the brush, the uniformly distributed net 2 can always maintain good air permeability and distribution, and indirectly avoid the filter bag from being subjected to additional wear due to uneven airflow.

[0054] The cleaning brush 51 is a nylon brush, and the nylon brush is made of nylon material.

[0055] The nylon material has high wear resistance and moderate elasticity. When it comes into contact with the uniformly distributed net 2 for cleaning, it can effectively remove the attached dust without scratching the surface of the net or causing the mesh to deform. In this way, by ensuring the structural integrity and air permeability of the uniformly distributed net 2, the secondary airflow distribution effect is maintained stably, and the local airflow impact on the filter bag is reduced.

[0056] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A built-in airflow uniform distribution device for a negative pressure large bag filter dust collector, characterized in that, include; The main body of the bag filter (1) has an air inlet pipe (11) connected to the lower side of one end; An airflow buffer mechanism is located on the lower side of the inner cavity of the bag filter body (1) to buffer the impact force of the airflow entering the inner cavity of the bag filter body (1). The airflow buffer mechanism includes: The rotating shaft (32) is installed in the middle of the inner cavity of the bag filter body (1) through the limiting component; The drive disk (3) is fixedly connected to the bottom of the rotating shaft (32), and multiple blades (31) are fixedly connected at equal intervals on the outer side of the drive disk (3); The uniformly distributed mesh (2) is installed in the inner cavity of the bag filter body (1) and is located between the dust collector bag and the airflow buffer mechanism.

2. The built-in airflow uniform distribution device for a negative pressure large bag filter dust collector according to claim 1, characterized in that, The limiting component includes: The fixed plate (41) is rotatably sleeved on the outside of the rotating shaft (32) via a sealed bearing; Two fixing rods (4) are fixedly connected to the other end of the fixing plate (41), and the other ends of the two fixing rods (4) are fixedly connected to the inner wall of the bag filter body (1).

3. The built-in airflow uniform distribution device for a negative pressure large bag filter dust collector according to claim 1, characterized in that, The air outlet of the air inlet pipe (11) corresponds to the edge of the blade (31).

4. The built-in airflow uniform distribution device for a negative pressure large bag filter dust collector according to claim 1, characterized in that, The aperture size on the uniformly distributed mesh (2) is the same. A fixed frame (21) is fixedly connected to the inner wall of the bag dust collector body (1) above the uniformly distributed mesh (2). A first fixing bolt (22) passes through the fixed frame (21), and the first fixing bolt (22) is threadedly connected to the edge mounting frame surface of the uniformly distributed mesh (2).

5. The built-in airflow uniform distribution device for a negative pressure large bag filter dust collector according to claim 1, characterized in that, The top of the rotating shaft (32) is connected to a cleaning plate (5) via a disassembly assembly. A cleaning brush (51) is fixedly connected to one end of the cleaning plate (5) near the uniformly distributed net (2), and the cleaning brush (51) is in contact with the bottom of the uniformly distributed net (2).

6. The built-in airflow uniform distribution device for a negative pressure large bag filter dust collector according to claim 5, characterized in that, The disassembly / assembly components include: Two fixing rings (52) are fixedly connected to the bottom sides of the cleaning plate (5), and both fixing rings (52) are attached to the outer sides of the rotating shaft (32); Two second fixing bolts (53) are respectively inserted through the two fixing rings (52), and both second fixing bolts (53) are threadedly connected to the bottom surface of the cleaning plate (5).

7. The built-in airflow uniform distribution device for a negative pressure large bag filter dust collector according to claim 5, characterized in that, The cleaning brush (51) is a nylon brush.

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