Dust removal device for metal powder processing

Abstract

This utility model discloses a dust removal device for metal powder processing, including a cyclone dust removal mechanism and a bag dust removal mechanism. The cyclone dust removal mechanism is located on one side of the bag dust removal mechanism. The cyclone dust removal mechanism also includes a cylinder. Multiple fixed frames are fixedly installed at equal intervals on the lower wall of the mounting plate. Filter bags are fixedly installed on the outer wall of the fixed frames. An exhaust pipe is fixedly installed on one side of the upper end of the housing. The cyclone dust removal mechanism performs preliminary filtration of air containing metal powder. When the air containing metal powder enters the cylinder, large metal particles fall into the first collection box due to centrifugal force, preventing large metal particles from damaging the filter bags. Some of the small metal particles are stuck to the outer wall of the filter bags, while others fall into the second collection box due to gravity. The filtered air then enters the exhaust pipe through the filter bags and is discharged.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, and in particular to a dust removal equipment for metal powder processing. Background Technology

[0002] In the field of metal powder processing, baghouse dust collectors have become one of the mainstream devices for controlling dust pollution due to their high-efficiency filtration capabilities. Metal powder processing involves multiple stages, including crushing, grinding, screening, mixing, and transportation. Each stage generates a large amount of dust-laden airflow, which contains both fine particles and large particles of varying proportions. Baghouse dust collectors treat these dust-laden airflows through filter bags. The porous structure of the filter bags traps the dust, and the dust layer that gradually forms on the surface of the filter bags enhances the filtration effect, thereby achieving gas-solid separation, effectively reducing the dust concentration in the workshop, and minimizing the threat to the health of operators.

[0003] However, traditional baghouse dust collectors face a significant problem when handling metal powders: large particles damage the filter bags. Taking hard metal powders such as iron, steel, and aluminum powder as examples, large particles larger than 50μm in diameter are often hard and have sharp edges. When dust-laden airflow enters the dust collector, these large particles, propelled by the airflow, impact the filter bag surface at high speed. Furthermore, during filter bag vibration or airflow turbulence, they continuously rub and scrape against the filter bag. After long-term operation, the filter bags are easily torn and worn, leading to a sharp decline in filtration performance and even dust leakage. This not only causes pollution to the production environment and surrounding ecosystem but also forces companies to frequently replace filter bags to maintain dust removal efficiency, thereby increasing equipment maintenance costs. Moreover, downtime for maintenance reduces production efficiency and affects production schedules.

[0004] Therefore, this application provides a dust removal device for metal powder processing. Utility Model Content

[0005] This invention provides a dust removal device for metal powder processing, which can solve the problem that traditional bag dust collectors are easily cut by large metal particles when processing metal powder.

[0006] This utility model provides a dust removal device for metal powder processing, comprising:

[0007] The dust removal equipment includes a cyclone dust collector and a bag filter dust collector. The cyclone dust collector is located on one side of the bag filter dust collector. The cyclone dust collector also includes a cylinder with a conical cylinder connected to its bottom flange. A collection box is connected to the bottom flange of the conical cylinder. A central pipe is fixedly installed at the center of the upper end of the cylinder, and the lower end of the central pipe extends downward into the conical cylinder. An air inlet pipe is integrally installed on the outer wall of the cylinder. The bag filter dust collector also includes a housing with a collection box connected to its bottom flange. The upper end of the central pipe is connected to the lower outer wall of the housing via a pipe. An installation plate is fixedly installed at the upper end of the housing. Multiple equidistantly spaced fixed frames are fixedly installed on the lower wall of the installation plate. Filter bags are fixedly installed on the outer wall of the fixed frames. An exhaust pipe is fixedly installed on one side of the upper end of the housing.

[0008] In a dust removal device for metal powder processing according to one embodiment of the present invention, the air inlet pipe is tangentially connected to the cylinder, and the air inlet pipe is located in the upper middle part of the cylinder and does not coincide with the axis of the cylinder.

[0009] In a dust removal device for metal powder processing according to one embodiment of the present invention, a fan is fixedly installed at the center of the upper surface of the housing, and a fan blade is fixedly installed at the end of the output shaft of the fan.

[0010] In a dust removal device for metal powder processing according to one embodiment of the present invention, a plurality of mounting seats are fixedly installed on the outer wall of one side of the upper end of the housing, and an air distribution pipe is fixedly installed at the lower end of the plurality of mounting seats. A plurality of pulse gas generators are fixedly installed on the upper wall of the air distribution pipe, and a plurality of flushing pipes are fixedly installed on one side of the air distribution pipe. The output end of the pulse gas generator is connected to the flushing pipe, and the side of the flushing pipe away from the air distribution pipe is located directly above the filter bag.

[0011] In a dust removal device for metal powder processing according to one embodiment of the present invention, a water tank is fixedly installed at the bottom of the box body, and the central pipe is fixedly connected to one side of the water tank through a pipe. A fixed frame is fixedly installed inside the water tank, and a churning groove is provided in the center of the fixed frame. A filter screen is fixedly installed on the upper surface of the fixed frame.

[0012] In a dust removal device for metal powder processing according to one embodiment of the present invention, a baffle plate is fixedly installed at the bottom of the fan blade.

[0013] In a dust removal device for metal powder processing according to one embodiment of the present invention, a fan is fixedly installed on one side of the outer wall of the exhaust pipe.

[0014] The technical solution provided in this application embodiment can include the following beneficial effects: This application designs a dust removal device for metal powder processing. By setting a cyclone dust removal mechanism, the air containing metal powder is initially filtered. When the air containing metal powder enters the cylinder, large metal particles fall into the collection box one for collection due to centrifugal force, preventing large metal particles from damaging the filter bag. Small metal particles are sent to the central pipe and then enter the box body. The small metal particles in the mixed gas of small metal particles entering the box body are trapped on the outer wall of the filter bag. Part of the trapped small metal particles are stuck to the outer wall of the filter bag, and the other part falls into the collection box two for collection due to gravity. The filtered air enters the exhaust pipe through the filter bag and is discharged.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of this application;

[0018] Figure 2 This is a half-sectional view of the cyclone dust removal mechanism in Embodiment 1 of this application;

[0019] Figure 3 This is a half-sectional view of the bag filter mechanism in Embodiment 1 of this application;

[0020] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this application;

[0021] Figure 5 This is a cross-sectional view of the box in Embodiment 2 of this application. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and 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 of this application. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Example 1

[0026] like Figures 1 to 3 As shown, this application provides a dust removal device for metal powder processing, comprising:

[0027] The dust removal equipment 100 includes a cyclone dust removal mechanism 10 and a bag dust removal mechanism 20. The cyclone dust removal mechanism 10 is located on one side of the bag dust removal mechanism 20. The cyclone dust removal mechanism 10 also includes a cylinder 11. A cone 12 is connected to the bottom flange of the cylinder 11. A collection box 15 is connected to the bottom flange of the cone 12. A central pipe 13 is fixedly installed at the center of the upper end of the cylinder 11. The lower end of the central pipe 13 extends downward into the interior of the cone 12. An air inlet pipe 14 is integrally provided on the outer wall of the cylinder 11. The bag dust removal mechanism 20 also includes a box 21. A collection box 22 is connected to the bottom flange of the box 21. The upper end of the central pipe 13 is connected to the lower outer wall of the box 21 through a pipe. An installation plate 23 is fixedly installed at the upper end of the box 21. Multiple fixed frames 24 are fixedly installed at equal intervals on the lower wall of the installation plate 23. Filter bags 25 are fixedly installed on the outer wall of the fixed frames 24. An exhaust pipe 28 is fixedly installed on one side of the upper end of the box 21.

[0028] After adopting the above technical solution, the air containing metal powder is initially filtered by setting up a cyclone dust removal mechanism 10. When the air containing metal powder enters the cylinder 11, large metal particles fall into the collection box 15 for collection due to centrifugal force, preventing large metal particles from damaging the filter bag. Small metal particles are sent to the central pipe 13 and then enter the box 21. The small metal particles in the mixed gas of small metal particles entering the box 21 are trapped on the outer wall of the filter bag 25. Some of the trapped small metal particles stick to the outer wall of the filter bag 25, and the other part falls into the collection box 22 for collection due to gravity. The filtered air then enters the exhaust pipe 28 through the filter bag 25 and is discharged.

[0029] In one optional embodiment, the air inlet pipe 14 is tangentially connected to the cylinder 11, and the air inlet pipe 14 is precisely positioned in the upper middle part of the cylinder 11, with its axis not coinciding with the axis of the cylinder 11. This unique tangential air inlet design allows the airflow to flow along the inner wall of the cylinder 11 at high speed after entering the cylinder 11, providing ideal flow field conditions for subsequent airflow processing and helping to improve the processing efficiency and effectiveness of the entire system.

[0030] In another alternative embodiment, a fan 26 is securely fixedly mounted at the center of the upper surface of the housing 21, and a fan blade 27 is tightly fixedly mounted at the end of the output shaft of the fan 26. When the fan 26 is started, the fan blade 27 rotates at high speed driven by the output shaft, thereby creating a negative pressure area inside the housing 21. This effectively draws air containing metal powder into the system, providing a sufficient airflow source for subsequent metal powder separation and dust removal.

[0031] In another optional embodiment, multiple mounting bases 29 are reliably fixed to the outer wall of one side of the upper end of the housing 21. The lower ends of these mounting bases 29 collectively support the air distribution pipe 210, ensuring its stable installation. Multiple pulse gas generators 211 are evenly fixedly mounted on the upper wall of the air distribution pipe 210. Simultaneously, multiple flushing pipes 212 are fixedly connected to one side of the air distribution pipe 210, and the output ends of the pulse gas generators 211 are precisely connected to the flushing pipes 212. The side of the flushing pipe 212 furthest from the air distribution pipe 210 is cleverly positioned directly above the filter bag 25. When the pulse gas generator 211 starts working, it generates a powerful pulsed airflow that rapidly enters the flushing pipe 212 and is blown towards the filter bag 25 at a specific angle and force. This process effectively washes off the metal powder adhering to the outer wall of the filter bag 25, preventing the filter bag 25 from becoming less breathable due to excessive accumulation of metal powder, which would affect the dust removal efficiency of the entire dust removal system and ensure the long-term stable operation and high-efficiency dust removal performance of the system.

[0032] Example 2

[0033] like Figures 4 to 5 As shown, in order to enable the dust removal equipment to remove dust from flammable and explosive metal powders such as aluminum and magnesium, based on Embodiment 1, a water tank 213 is fixedly installed at the bottom of the housing 21, and the central pipe 13 is fixedly connected to one side of the water tank 213 through a pipe. A fixed frame 214 is fixedly installed inside the water tank 213, and a churning groove 216 is set in the center of the fixed frame 214. A filter screen 215 is fixedly installed on the upper surface of the fixed frame 214. Small aluminum and magnesium powder gas particles that have been initially dusted by the cyclone dust removal mechanism 10 enter the water tank 213. The high-speed moving aluminum and magnesium powder particles collide with water droplets or water films, and after their kinetic energy is absorbed, they lose their suspension ability and are captured by water, preventing the aluminum and magnesium powder from forming a dust cloud that could explode upon contact with fire.

[0034] In one optional embodiment, a baffle plate 217 is securely fixed to the bottom of the fan blade 27. When the fan blade 27 is in operation, its high-speed rotation induces complex hydrodynamic effects inside the water tank 213, causing the water inside the tank to be subjected to a pulling force, surging towards the exhaust port and creating a noticeable churning phenomenon. At this time, the water tank 213, with its specific structure and volume, effectively blocks the churning water, preventing it from being discharged outside the tank 213 due to excessive surging. This ensures the stability and safety of the system during operation and prevents accidental water discharge from affecting subsequent processes or causing equipment damage.

[0035] In another alternative embodiment, a fan 218 is reliably fixed to one side of the outer wall of the exhaust pipe 28. During system operation, aluminum-magnesium powder reacts chemically with water to produce hydrogen gas. Accumulation of hydrogen gas within the exhaust pipe 28 may pose a safety hazard. By activating the fan 218, sufficient air can be continuously supplied into the exhaust pipe 28, altering the gas composition. Utilizing the mixing of air and hydrogen gas and the flow characteristics of air, the hydrogen content within the exhaust pipe 28 is effectively reduced and controlled within a safe range, thereby ensuring the safe operation of the entire system and preventing dangerous accidents such as explosions caused by excessive hydrogen concentration.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. 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, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A dust removal apparatus for metal powder processing, characterized by comprising: include: The dust removal equipment includes a cyclone dust collector and a bag filter dust collector. The cyclone dust collector is located on one side of the bag filter dust collector. The cyclone dust collector also includes a cylinder with a conical cylinder connected to its bottom flange. A collection box is connected to the bottom flange of the conical cylinder. A central pipe is fixedly installed at the center of the upper end of the cylinder, and the lower end of the central pipe extends downward into the conical cylinder. An air inlet pipe is integrally installed on the outer wall of the cylinder. The bag filter dust collector also includes a housing with a collection box connected to its bottom flange. The upper end of the central pipe is connected to the lower outer wall of the housing via a pipe. An installation plate is fixedly installed at the upper end of the housing. Multiple equidistantly spaced fixed frames are fixedly installed on the lower wall of the installation plate. Filter bags are fixedly installed on the outer wall of the fixed frames. An exhaust pipe is fixedly installed on one side of the upper end of the housing.

2. The dust removal apparatus for metal powder processing according to claim 1, characterized by The air intake pipe is tangentially connected to the cylinder, and the air intake pipe is located in the upper middle part of the cylinder, not coinciding with the axis of the cylinder.

3. The dust removal apparatus for metal powder processing according to claim 1, characterized by A fan is fixedly installed at the center of the upper surface of the housing, and a fan blade is fixedly installed at the end of the output shaft of the fan.

4. The dust removal apparatus for metal powder processing according to claim 1, characterized by Multiple mounting bases are fixedly installed on one side of the upper end of the housing. Air distribution pipes are fixedly installed at the lower end of the multiple mounting bases. Multiple pulse gas generators are fixedly installed on the upper wall of the air distribution pipes. Multiple flushing pipes are fixedly installed on one side of the air distribution pipes. The output end of the pulse gas generators is connected to the flushing pipes. The side of the flushing pipe away from the air distribution pipe is located directly above the filter bag.

5. The dust removal apparatus for metal powder processing according to claim 1, characterized by A water tank is fixedly installed at the bottom of the box, and the central pipe is fixedly connected to one side of the water tank through a pipe. A fixed frame is fixedly installed inside the water tank, and a churning trough is set in the center of the fixed frame. A filter screen is fixedly installed on the upper surface of the fixed frame.

6. The dust removal apparatus for metal powder processing according to claim 3, characterized by A water baffle is fixedly installed at the bottom of the fan blade.

7. The dust removal apparatus for metal powder processing according to claim 1, characterized by A fan is fixedly installed on one side of the outer wall of the exhaust pipe.

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