A cloth bag dust collector with uniform air distribution
By installing an inverted V-shaped air distribution plate inside the bag filter, with the air holes tilted backward and downward, the problem of uneven air distribution is solved, improving the efficiency of the filter bags and preventing dust blockage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU QUANNENG ELECTROMECHANICAL EQUIP ENG LTD BY SHARE LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-21
AI Technical Summary
In existing baghouse dust collectors, after the air enters through the inlet duct, the front and middle bags have a high utilization rate, while the side and rear bags have a low utilization rate, resulting in uneven air distribution.
An inverted V-shaped air distribution plate is installed inside the box, with the air holes tilted backward and downward. The cross-section is elliptical, and the three sides of the air distribution plate are not coplanar. The air holes are designed with an inverted V-shaped structure to enhance the distribution of airflow to the sides and rear.
It achieves uniform air distribution, improves the utilization rate of the bags in all areas, compensates for insufficient airflow on the sides and rear, and prevents dust blockage.
Smart Images

Figure CN224524251U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a bag filter dust collector, specifically a bag filter dust collector with uniform air distribution. Background Technology
[0002] Baghouse dust collectors are widely used in dust removal processes such as catalytic desulfurization, dust collection, and compound dust removal. Raw air enters from the bottom of the dust collector housing, passes through the bag filters, and exits from the top.
[0003] The disadvantages are:
[0004] The air inlet duct is a single pipe, and the housing has only one air inlet. This results in more air entering the front and middle filter bags, while the filter bags on the sides and rear have a low utilization rate. Utility Model Content
[0005] To address the shortcomings of the existing technology, this utility model provides a bag filter with uniform air distribution. This utility model adds an air distribution plate inside the housing, resulting in uniform air distribution and balanced utilization of the filter bags in all areas.
[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: a bag filter with uniform air distribution, comprising a housing and a funnel, wherein a dust collector bag is disposed inside the housing and an air outlet pipe is disposed on the side, the funnel is fixed to the bottom of the housing and an air inlet pipe is disposed in the funnel, and an air distribution plate is installed at the inner bottom of the housing, the air distribution plate is inverted V-shaped, and air holes are opened on both side walls of the air distribution plate, the air holes being inclined to the rear and downward.
[0007] The cross-section of the air vent is elliptical, and the major axis of the ellipse is arranged in the horizontal direction.
[0008] The bottom surface of the air vent has a first inclined arc surface near the inside and a second inclined arc surface near the outside. The first inclined arc surface, the bottom surface, and the second inclined arc surface are not coplanar.
[0009] The angle between the first oblique arc surface and the vertical line is a, the angle between the bottom surface and the vertical line is b, and the angle between the second oblique arc surface and the vertical line is c, where a>b>c.
[0010] The bottom surface is parallel to the top surface.
[0011] The top surface of the air distribution plate has rounded corners.
[0012] In summary, this utility model achieves the following technical effects:
[0013] This utility model features an air distribution plate, which makes the airflow more uniform throughout the area.
[0014] The air vents of this invention face backward and downward, allowing the air to flow as far to the sides and rear as possible, thus compensating for the deficiencies of insufficient air volume and slow air speed at the sides and rear, while the air flow speed at the front and middle is fast enough to meet the usage requirements.
[0015] The inverted V-shaped structure of this utility model facilitates the falling of dust. Attached Figure Description
[0016] Figure 1 It is a bag filter dust collector with uniform air distribution;
[0017] Figure 2 This is a schematic diagram of the air distribution panel;
[0018] Figure 3 This is a schematic diagram of the cross-section of the air distribution plate;
[0019] Figure 4 yes Figure 3 A magnified view of a portion of the image. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to the accompanying drawings.
[0021] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0024] 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0026] Example:
[0027] Figure 1 It is a bag filter dust collector with uniform air distribution. Figure 2 This is a schematic diagram of a wind distribution plate, including a housing 1 and a funnel 4. The housing 1 is equipped with a dust collector bag 5 and an air outlet pipe on the side. The funnel 4 is fixed to the bottom of the housing 1 and is equipped with an air inlet pipe 2. A wind distribution plate 3 is installed at the bottom of the inner side of the housing 1. The wind distribution plate 3 is inverted V-shaped and has air holes 31 on both side walls.
[0028] This invention features a wind-distributing plate at the bottom of the cloth bag, which evenly distributes the air throughout the entire box, ensuring even use of the cloth bag and reducing the amount of air entering the front and middle cloth bags while the side and rear cloth bags have low usage rates.
[0029] The air vent 31 is tilted backward and downward, such as Figure 2 The double arrows indicate the direction of the airflow from the vents, which is directed backward and downward, allowing the airflow to be delivered to the sides and rear as much as possible to compensate for the insufficient airflow and slow airflow speed in the sides and rear. The airflow speed in the middle and front is faster, which is sufficient to meet the usage requirements.
[0030] The cross-section of the air vent 31 is elliptical, and the major axis of the ellipse is arranged horizontally. Specifically, the air vent has a relatively flat structure, which increases the air volume and its low height prevents dust from entering the vent and causing blockage.
[0031] Figure 3This is a schematic diagram of the cross-section of the air distribution plate. Figure 4 yes Figure 3 In the enlarged schematic diagram, the bottom surface 312 of the air vent 31 has a first inclined arc surface 313 near the inside and a second inclined arc surface 314 near the outside. The first inclined arc surface 313, the bottom surface 312, and the second inclined arc surface 314 are not coplanar.
[0032] The angle between the first oblique arc surface 313 and the vertical line is a, the angle between the bottom surface 312 and the vertical line is b, and the angle between the second oblique arc surface 314 and the vertical line is c, where a>b>c.
[0033] In this embodiment, the three surfaces are not coplanar and have a structure of large, small, large from the inside out, which maintains the air intake volume. The second inclined arc surface 314 on the outer side has a large inclination, so dust falling on it will slide down by its own weight. The second inclined arc surface 314 of the bucket is more conducive to the dust sliding down, preventing dust from clogging the holes.
[0034] The bottom surface 312 is parallel to the top surface 311.
[0035] The vent is oval in shape, with one half of the oval being larger at both ends and smaller in the middle. The rounded corners of the oval shape make it easier for dust to slide down.
[0036] The top surface of the air distribution plate 3 has a rounded corner transition, making it easier for dust falling from the cloth bag to slide off.
[0037] In another embodiment, the air distribution plate has an inverted V-shaped S-shape, which allows for better air distribution to different areas, resulting in a better air distribution effect.
[0038] Preferably, the V-shaped cross-section occupies 1 / 4 to 1 / 3 of the box body.
[0039] The two ends of the air distribution plate are welded to the inside of the box.
[0040] 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 way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.
Claims
1. A bag filter dust collector with uniform air distribution, comprising a housing (1) and a funnel (4), wherein a dust collector bag (5) is disposed inside the housing (1) and an air outlet pipe is disposed on the side, the funnel (4) is fixed to the bottom of the housing (1), and the funnel (4) is provided with an air inlet pipe (2), characterized in that: The bottom of the box (1) is equipped with a wind distribution plate (3). The wind distribution plate (3) is inverted V-shaped. Both side walls of the wind distribution plate (3) are provided with air holes (31). The air holes (31) are inclined to the rear and downward.
2. The bag filter with uniform air distribution according to claim 1, characterized in that: The cross-section of the air vent (31) is elliptical, and the major axis of the ellipse is arranged in the horizontal direction.
3. The bag filter with uniform air distribution according to claim 1, characterized in that: The bottom surface (312) of the air vent (31) has a first oblique arc surface (313) near the inside and a second oblique arc surface (314) near the outside. The first oblique arc surface (313), the bottom surface (312), and the second oblique arc surface (314) are not coplanar.
4. A bag filter with uniform air distribution according to claim 3, characterized in that: The angle between the first oblique arc surface (313) and the vertical line is a, the angle between the bottom surface (312) and the vertical line is b, and the angle between the second oblique arc surface (314) and the vertical line is c, where a > b > c.
5. A bag filter with uniform air distribution according to claim 3, characterized in that: The bottom surface (312) is parallel to the top surface (311).
6. A bag filter with uniform air distribution according to claim 1, characterized in that: The top surface of the air distribution plate (3) has a rounded corner transition.