A powder material dedusting device

Abstract

The utility model discloses a kind of powder material dust removal devices, it is related to dry filter dust device technical field, including hard filter assembly, dust cleaner and impeller, wherein, the lower portion of hard filter assembly is connected with hopper.Grey funnel is cone, cyclone is installed at the top of hopper, tangent line of the side wall of cyclone is provided with dust-containing gas inlet, impeller is installed at the top of hard filter assembly, and then utilize impeller to drive hard filter assembly rotation.In use, after dust-containing airflow enters cyclone, flow along inner wall, thereby centrifugal force is formed on large particle dust, so that the dust of larger quality along inner wall cyclone enters into hopper, and drive impeller rotation, thereby drive hard filter assembly rotation, whereby can give the centrifugal force of small dust particle attached on filter material, thereby offset the problem that small dust particle on filter material is extruded to filter bag due to the pressure difference of filter bag filter material two sides.

Description

Technical Field

[0001] This utility model relates to the technical field of dry dust filtration devices, specifically to a dust removal device for powder materials. Background Technology

[0002] After a period of use, a layer of dust accumulates on the surface of the filter bags in typical dry dust collectors due to effects such as sieving, collision, retention, diffusion, and electrostatic discharge. This dust layer is called the primary layer. In subsequent operation, the primary layer becomes the main filtration layer of the filter media. Relying on the primary layer, even filter media with larger mesh sizes can achieve high filtration efficiency. As dust accumulates on the surface of the filter media, the efficiency and resistance of the dust collector increase accordingly.

[0003] However, when the pressure difference between the two sides of the filter media is large, some fine dust particles that have already adhered to the filter media will be squeezed through, causing the dust collector efficiency to decrease. Therefore, if the dust collector is to be used for a long time, the pressure difference between the two sides of the filter media should be avoided. However, a low pressure difference will also cause the air volume of the dust collection system to decrease significantly. Therefore, a new dust filter structure needs to be redesigned to ensure that the pressure difference is large enough while avoiding fine dust particles being squeezed into the inside of the filter media. Utility Model Content

[0004] The purpose of this utility model is to provide a solution to the problems mentioned in the background art.

[0005] The technical solution adopted in this utility model is:

[0006] A dust removal device for powder materials, comprising:

[0007] Rigid filter assembly with an ash hopper at the bottom;

[0008] The dust collector is connected to the hydrocyclone at the bottom. The hydrocyclone contains a rigid filter assembly, which is rotatably mounted on the top of the hydrocyclone.

[0009] An impeller is mounted on top of the rigid filter assembly and is adapted to drive the rigid filter assembly to rotate;

[0010] The cyclone separator has a dust-laden gas inlet tangentially located on its sidewall, which is designed to drive the impeller to rotate.

[0011] Optionally, the rigid filter assembly includes:

[0012] A steel cage, with a shaft tube vertically installed on the top and connected to the shaft tube, and the impeller fixedly sleeved on the shaft tube;

[0013] A nozzle is disposed at the end of the shaft tube, and the nozzle is adapted to rotate in the hydrocyclone;

[0014] Optionally, a filter bag is provided inside the steel cage;

[0015] The filter bag includes:

[0016] The bag body has a neck at the top;

[0017] The bag opening is located at the end of the bag neck, and a magnetic strip is attached to the bag opening, which is attracted to the nozzle.

[0018] Optionally, the bag body is a nylon bag.

[0019] Optionally, the dust cleaner includes a cover, an inlet, and an outlet. The cover is a shell with its bottom connected to the nozzle. The inlet and the outlet are provided on both sides of the cover. The inlet is provided with a pulse jet mechanism, which is adapted to release compressed air instantaneously into the inlet.

[0020] Optionally, a bracket is installed at the bottom of the hydrocyclone, and the ash hopper is located inside the bracket.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This utility model discloses a dust collection device for powder materials, which improves upon the existing baghouse dust collector. By installing an impeller on a rigid filter assembly, when dust-laden air enters the cyclone separator, it drives the impeller to rotate. The impeller, in turn, rotates the rigid filter assembly and the filter bag, thereby generating centrifugal force on the filter bag and the initial dust layer adhering to it. This centrifugal force counteracts the effect of pressure difference on the initial dust layer. Compared to existing technologies, the technical solution proposed in this utility model can, while maintaining a constant pressure difference, utilize the centrifugal force generated by the filter bag to prevent the initial dust layer from thickening, thus solving the problem of decreased dust collector efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A perspective view of the powder material dust removal device provided by this utility model;

[0025] Figure 2 A perspective view of the bracket provided for this utility model;

[0026] Figure 3A perspective view of the rigid filter assembly provided by this utility model;

[0027] Figure 4 A perspective view of the dust collector provided for this utility model;

[0028] Figure 5 A perspective view of the filter bag provided for this utility model;

[0029] In the diagram: 1 Rigid filter assembly; 11 Steel cage; 12 Shaft tube; 13 Nozzle; 2 Dust-laden gas inlet; 3 Soot collector; 31 Cover; 32 Inlet; 33 Outlet; 4 Dust hopper; 5 Impeller; 6 Hydrocyclone; 7 Filter bag; 71 Bag body; 72 Bag neck; 73 Bag mouth; 8 Support. Detailed Implementation

[0030] 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify 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. Therefore, they should not be construed as limitations on this utility model.

[0031] 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.

[0032] Please refer to this as well. Figures 1-5 This utility model discloses a dust removal device for powder materials, including a rigid filter assembly 1, a dust collector 3, and an impeller 5. The lower part of the rigid filter assembly 1 is connected to a dust hopper 4. The dust hopper 4 is conical and has a discharge valve installed at the bottom. The top of the dust hopper 4 is connected to a hydrocyclone 6. A dust-laden gas inlet 2 is tangentially arranged on the side wall of the hydrocyclone 6. After the airflow containing dust enters the hydrocyclone 6, it flows along the inner wall, thereby forming centrifugal force on the large dust particles, causing the larger dust particles to enter the dust hopper 4 along the inner wall of the hydrocyclone 6.

[0033] In this embodiment, a bracket 8 is installed at the bottom of the hydrocyclone 6, and the ash hopper 4 is located inside the bracket 8.

[0034] In this embodiment, the rigid filter assembly 1 is rotatably mounted on top of the hydrocyclone 6, and an impeller 5 is installed on top of the rigid filter assembly 1. The airflow flowing in from the dust-laden gas inlet 2 can drive the impeller 5 to rotate, thereby driving the rigid filter assembly 1 to rotate. Furthermore, a filter bag 7 is disposed inside the rigid filter assembly 1. When the rigid filter assembly 1 rotates, the centrifugal force generated by the filter bag 7 allows the filter bag 7 to adhere tightly to the inner wall of the rigid filter assembly 1. Simultaneously, it also provides a certain centrifugal force to the fine dust particles attached to the filter media, thereby counteracting the problem of reduced filtration efficiency caused by the pressure difference on both sides of the filter media squeezing the fine dust particles onto the filter bag 7.

[0035] In this embodiment, the bag body is a nylon bag, and its material is cotton fiber, wool fiber, synthetic fiber or glass fiber.

[0036] In some embodiments, the bottom of the dust collector 3 is connected to the hydrocyclone 6, and a rigid filter assembly 1 is provided inside the hydrocyclone 6. The rigid filter assembly 1 is rotatably disposed on the top of the hydrocyclone 6, and the clean airflow flows out from the top of the hydrocyclone 6 through the filter bag 7.

[0037] In some embodiments, the rigid filter assembly 1 includes a steel cage 11 and a nozzle 13. A shaft tube 12 is vertically mounted on the top of the steel cage 11 and the steel cage 11 is connected to the shaft tube 12. An impeller 5 is sleeved on the shaft tube 12, and a nozzle 13 is provided at the end of the shaft tube 12. Driven by the impeller 5, the nozzle 13 rotates in the cyclone separator 6.

[0038] In some embodiments, the dust collector 3 includes a cover 31, an inlet 32, and an outlet 33. The cover 31 is a shell, with its bottom connected to the nozzle 13. The inlet 32 ​​and outlet 33 are provided on both sides of the cover 31. The inlet 32 ​​is equipped with a pulse jet cleaning mechanism, which is adapted to release compressed air instantaneously into the inlet 32. As the powder repeatedly adheres to the outer surface of the filter bag, the powder layer continuously thickens, and the resistance value of the filter bag 7 also increases. When the pulse jet cleaning mechanism issues a command, the pulse valve opens when the left and right sides are submerged, and the compressed air in the high-pressure air tank is circulated. When the dust becomes small enough, the mechanical dust removal operation stops.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust removal device for powder materials, characterized in that, include: A rigid filter assembly (1) is provided with a dust hopper (4) at the bottom; The bottom of the dust cleaner (3) is connected to the hydrocyclone (6), and the hydrocyclone (6) is provided with a rigid filter assembly (1), and the rigid filter assembly (1) is rotatably disposed on the top of the hydrocyclone (6). An impeller (5) is installed on top of the rigid filter assembly (1) and is adapted to drive the rigid filter assembly (1) to rotate; The cyclone separator (6) has a dust-laden gas inlet (2) tangentially arranged on its sidewall, which is adapted to blow the impeller (5) to rotate.

2. The dust removal device for powder materials as described in claim 1, characterized in that, The rigid filter assembly (1) includes: A steel cage (11) has a shaft tube (12) vertically installed on its top and connected to the shaft tube (12). The impeller (5) is fixedly sleeved on the shaft tube (12). A nozzle (13) is disposed at the end of the shaft tube (12), and the nozzle (13) is adapted to rotate in the cyclone separator (6).

3. The dust removal device for powder materials as described in claim 2, characterized in that, The steel cage (11) is equipped with a filter bag (7); The filter bag (7) includes: The bag body (71) has a neck (72) at the top; The bag opening (73) is located at the end of the bag neck (72), and a magnetic strip is attached to the bag opening (73), which is attracted to the nozzle (13).

4. The dust removal device for powder materials as described in claim 3, characterized in that, The bag body (71) is a nylon bag.

5. The dust removal device for powder materials as described in claim 2, characterized in that, The dust cleaner (3) includes a cover (31), an inlet (32) and an outlet (33). The cover (31) is a shell and its bottom is connected to the nozzle (13). The inlet (32) and the outlet (33) are provided on both sides of the cover (31). The inlet (32) is provided with a pulse jet mechanism, which is adapted to release compressed air into the inlet (32) instantaneously.

6. The dust removal device for powder materials as described in claim 2, characterized in that, The bottom of the hydrocyclone (6) is equipped with a bracket (8), and the ash hopper (4) is located inside the bracket (8).

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