A dust removal device of an air flow pulverizer

Abstract

The utility model relates to the technical field of airflow pulverizer, specifically disclose a dust collector of airflow pulverizer, include: dust removal cylinder, the top of dust removal cylinder is detachably connected with blowback device, dust removal cylinder is equipped with the air outlet pipeline and is used for with the air inlet pipeline of airflow pulverizer intercommunication, dust removal cylinder is equipped with the partition, is equipped with a plurality of filter ports on the partition, all are equipped with filter assembly on filter port, and filter assembly includes filter screen and fixing device, and fixing device includes mounting seat and openwork cage, and openwork cage is linked with mounting seat, and mounting seat is detachably connected with partition, and partition divides dust removal cylinder into collection cavity and filter cavity, and air inlet pipeline, collection cavity, filter cavity and air outlet pipeline are connected in proper order, dust remover, dust remover links with air outlet pipeline. The utility model solves the problem that the filter bag or filter screen of the dust removal device of existing airflow pulverizer is easy to block after long time use, leads to the problem that the dust removal efficiency is reduced, and the replacement and cleaning are inconvenient.

Description

Technical Field

[0001] This utility model relates to the field of airflow pulverizer technology, and in particular to a dust removal device for an airflow pulverizer. Background Technology

[0002] During the production and processing of air jet mills, a large amount of dust and fine particulate matter are generated. If this dust is directly emitted into the air, it will not only cause serious environmental pollution, but also harm the health of the operators.

[0003] Existing air jet mills typically remove dust by installing dust removal devices, which usually use filter bags or screens for dust filtration. However, filter bags or screens are prone to clogging after prolonged use, resulting in reduced dust removal efficiency and inconvenience in replacement and cleaning. Utility Model Content

[0004] To address the problem that existing dust removal devices for air jet mills are prone to clogging after prolonged use, leading to reduced dust removal efficiency and inconvenience in replacement and cleaning, this invention provides a dust removal device for air jet mills.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] An embodiment of this utility model provides a dust removal device for an airflow pulverizer, comprising:

[0007] The dust collector has an opening at its upper end and a back-blowing device detachably connected to its top. It includes an exhaust pipe and an intake pipe for connecting to the exhaust port of an airflow pulverizer. A partition plate is provided inside the dust collector, with several filter ports on the partition plate. Each filter port is equipped with a filter assembly, which includes a filter screen and a fixing device for securing the filter screen. The fixing device includes a mounting base and a perforated cage for inserting into the filter screen. The perforated cage is connected to the mounting base, which is detachably connected to the partition plate. The partition plate divides the dust collector into a collection chamber and a filter chamber. The intake pipe, collection chamber, filter chamber, and exhaust pipe are sequentially connected.

[0008] A dust collector, which is connected to the air outlet pipe.

[0009] According to some embodiments of the present invention, the fixing device further includes a hollow air guide tube, which is disposed inside the hollow cage and connected to the mounting base.

[0010] According to some embodiments of the present invention, the aperture of the air guide tube gradually decreases along its extension direction.

[0011] According to some embodiments of the present invention, the bottom of the hollow cage is provided with a partition.

[0012] According to some embodiments of the present invention, the partition plate is provided with an annular protrusion, and the mounting base is provided with an annular groove that cooperates with and connects to the annular protrusion.

[0013] According to some embodiments of the present invention, the back-blowing device includes a back-blowing hood and an air-blowing pipe disposed within the back-blowing hood.

[0014] According to some embodiments of the present invention, the air blowing pipe includes a main pipeline for air intake and a first branch pipeline and two second branch pipelines respectively connected to the main pipeline. The two second branch pipelines are arranged at intervals from the first branch pipeline, and each of the first branch pipelines and the second branch pipelines is provided with an air blowing port.

[0015] According to some embodiments of the present invention, three air inlets are arranged at intervals on the first branch pipe, and two air inlets are arranged at intervals on the second branch pipe.

[0016] This invention offers at least the following advantages: the partition plate divides the dust collector cylinder into a collection chamber and a filtration chamber, allowing the pulverized product to be collected in the collection chamber after entering the dust collector cylinder, while the dust is filtered through the filtration assembly and enters the dust collector. The detachable filtration assembly design makes filter replacement and cleaning more convenient, greatly improving maintenance efficiency. Furthermore, the back-blowing device further enhances the cleaning effect of the filter. The back-blowing device periodically blows air in the reverse direction on the filter to remove dust, prevent clogging, and ensure the long-term stable operation of the dust collector. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure after removing the backflush device according to one embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the backflush removal device and the fixing device according to an embodiment of the present invention;

[0020] Figure 4 This is a bottom view of the backflush device according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of a fixing device according to an embodiment of the present invention;

[0022] Figure 6 This is a bottom view of the fixing device according to an embodiment of the present invention;

[0023] Figure 7 This is a cross-sectional view of a dust collector cylinder according to an embodiment of the present invention. Detailed Implementation

[0024] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0025] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0026] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intermediary element (e.g., the third element) between the element and the other element.

[0027] An embodiment of this utility model provides a dust removal device for an airflow pulverizer, such as... Figure 1-7 As shown, it includes:

[0028] A dust collector 100 has an open top and a back-blowing device 200 detachably connected to its top. The dust collector 100 includes an exhaust pipe 110 and an intake pipe 120 for connecting to the exhaust port of an air jet mill. A partition plate 130 is provided inside the dust collector 100, with several filter ports 140. Each filter port 140 is equipped with a filter assembly 150, which includes... The filter screen and the fixing device 151 for fixing the filter screen are included. The fixing device 151 includes a mounting base 152 and a hollow cage 153 for inserting into the filter screen. The hollow cage 153 is connected to the mounting base 152. The mounting base 152 is detachably connected to the partition plate 130. The partition plate 130 divides the dust collector 100 into a collection chamber 160 and a filter chamber 170. The air inlet pipe 120, the collection chamber 160, the filter chamber 170 and the air outlet pipe 110 are connected in sequence.

[0029] Dust collector 300 is connected to air outlet pipe 110.

[0030] The dust collector 100 is a cylindrical structure open at one end, with a back-blowing device 200 installed at the top via a threaded connection, snap-fit ​​connection, or other detachable connection method. The back-blowing device 200 may include an air source, an air pipe 220, and air ports 224. The air source can be a compressed air storage tank, which is connected to the air pipe 220 via a pipe. The air pipe 220 has several air ports 224 corresponding to the filter assembly 150. The air ports 224 can be connected to the air pipe 220 via pulse valves, which control their opening and closing. When the filter needs cleaning, the compressed air from the back-blowing air source is instantly sprayed into the interior of the filter in the form of a high-speed airflow through the air pipe 220 and air ports 224. This high-speed airflow generates a strong reverse impact force, causing the dust adhering to the filter surface to fall off, thereby achieving filter cleaning. The dust collector 100 has an exhaust pipe 110 and an intake pipe 120 on its side wall. The intake pipe 120 is connected to the exhaust port of the air jet mill to introduce dust-laden gas; the exhaust pipe 110 is used to discharge the gas after dust removal. A horizontal partition plate 130 divides the dust collector 100 into upper and lower chambers: an upper filtration chamber 170 and a lower collection chamber 160. The partition plate 130 has several filter ports 140, each with a filter assembly 150 installed. The filter assembly 150 includes a filter screen and a fixing device 151. The filter screen can be made of high-temperature and corrosion-resistant fiber materials, such as polyester fiber, aramid, or membrane filter media; the specific material can be selected according to the working conditions. The fixing device 151 includes a mounting base 152 and a perforated cage 153. The perforated cage 153 is a cage-like structure made of metal or high-strength plastic, possessing sufficient mechanical strength and air permeability. It supports the filter screen from the inside, preventing it from collapsing or breaking under airflow. The filter screen is fitted over the perforated cage 153. The mounting base 152 is fixedly connected to the perforated cage 153 (e.g., by welding or integral molding). The mounting base 152 is detachably installed at the filter port 140 of the partition plate 130 via bolts, clips, or quick-release mechanisms, facilitating filter screen replacement and maintenance. The back-blowing device 200 periodically blows air backwards onto the filter screen to remove dust, prevent clogging, and ensure effective dust removal. The back-blowing device 200, mounting device 151, and other components are all detachable for easy maintenance and replacement. The design of the filter screen and mounting device 151 effectively intercepts dust, improving dust removal efficiency. The back-blowing device 200 allows for periodic cleaning of the filter screen, extending its service life and reducing maintenance costs.

[0031] The working principle of this utility model is as follows:

[0032] The dust-laden product generated by the air jet mill enters the collection chamber 160 of the dust collector 100 through the inlet pipe 120. Inside the collection chamber 160, the dust-laden product is filtered by the filter assembly 150 on the partition plate 130. The filter screen intercepts the desired product, and the dust enters the filter chamber 170 through the filter port 140. The dust then enters the dust collector 300 through the outlet pipe 110 for further processing before being discharged.

[0033] In some embodiments, the fixing device 151 further includes a hollow air guide cylinder 154, which is disposed inside the hollow cage 153 and connected to the mounting base 152.

[0034] An air guide tube 154 is housed within the perforated cage 153 and connected to the mounting base 152. The air guide tube 154 is hollow, meaning it guides airflow. This hollow structure allows the airflow to pass more evenly through the filter screen, preventing localized concentration and improving filtration efficiency and uniformity. During backflushing, the air guide tube 154 acts as a channel for the backflushing gas, ensuring its more even distribution across the entire filter screen and enhancing cleaning effectiveness. Simultaneously, the air guide tube 154 prevents the backflushing gas from directly impacting the filter screen, reducing damage and extending its lifespan. By optimizing the airflow path and ensuring more even airflow through the filter screen, the air guide tube 154 protects the filter screen from direct impact by the backflushing gas, minimizing damage and extending its lifespan.

[0035] Furthermore, the aperture of the air guide tube 154 gradually decreases along its extension direction.

[0036] The aperture of the air guide tube 154 gradually decreases along its extension direction. The air guide tube 154 is housed within the perforated cage 153 and connected to the mounting base 152. This gradually decreasing aperture design allows the airflow to gradually slow down and distribute evenly as it passes through the air guide tube 154. This design effectively avoids localized airflow concentration on the filter screen, ensuring a more uniform airflow distribution across the entire filter screen surface. The gradually decreasing aperture reduces eddies generated during airflow, further optimizing the airflow path and improving filtration efficiency. This design prevents backflushing gas from directly impacting the filter screen, reducing filter screen damage and extending its service life. By optimizing airflow distribution, a more uniform filtration effect across the entire filter screen surface is ensured, improving overall filtration efficiency.

[0037] In some embodiments, the bottom of the hollow cage 153 is provided with a partition 155.

[0038] A baffle 155 is disposed at the bottom of the perforated cage 153. The baffle 155 enhances the structural stability of the perforated cage 153, ensuring that the perforated cage 153 will not deform or be damaged during high airflow and backflushing processes. The baffle 155 provides additional support for the filter screen, reducing vibration and damage to the filter screen during high airflow and backflushing processes, and extending the service life of the filter screen.

[0039] In some embodiments, the partition plate 130 is provided with an annular protrusion 131, and the mounting base 152 is provided with an annular groove 156 that cooperates with and connects to the annular protrusion 131.

[0040] When installing the filter screen, it can be fitted onto the annular protrusion 131, and then connected to the annular protrusion 131 via the annular groove 156, thereby fixing the filter screen in place. The design of the annular protrusion 131 and the annular groove 156 allows for quick positioning and connection, simplifying the installation process and improving assembly efficiency. This design ensures precise alignment between the mounting base 152 and the partition plate 130, preventing airflow leakage or filter screen damage due to improper installation. The engagement of the annular protrusion 131 and the annular groove 156 enhances the connection stability between the mounting base 152 and the partition plate 130, ensuring that the entire device will not loosen or deform during high airflow and backflushing processes.

[0041] In some embodiments, the backflush device 200 includes a backflush hood 210 and an air blowing pipe 220 disposed within the backflush hood 210.

[0042] The backflushing device 200 includes a backflushing hood 210, which covers and protects the air blowing pipe 220 while guiding the backflushing gas. The air blowing pipe 220 is disposed within the backflushing hood 210 and is used to generate and guide the backflushing gas to clean the filter screen. The backflushing gas can periodically remove dust from the filter screen, preventing clogging and ensuring efficient operation of the dust removal device. The backflushing hood 210 optimizes the path of the backflushing gas, reducing airflow turbulence and losses, and improving backflushing efficiency. The backflushing hood 210 enhances the overall structural stability of the backflushing device 200, ensuring that the device will not loosen or be damaged during high airflow and backflushing processes.

[0043] Furthermore, the air blowing pipe 220 includes a main pipe 221 for air intake and a first branch pipe 222 and two second branch pipes 223 respectively connected to the main pipe 221. The two second branch pipes 223 are arranged alternately with the first branch pipe 222, and each of the first branch pipe 222 and the second branch pipe 223 is provided with an air blowing port 224.

[0044] Main pipe 221 is used for air intake and is the main airflow channel of blowing pipe 220. First branch pipe 222 is connected to main pipe 221 and is used to distribute airflow. Two second branch pipes 223 are connected to main pipe 221 and arranged alternately with first branch pipe 222, used to further distribute airflow. Both first branch pipe 222 and the two second branch pipes 223 are equipped with blowing ports 224 to evenly spray backflushing gas onto the filter screen. By setting blowing ports 224 on first branch pipe 222 and the two second branch pipes 223, multi-point blowing can be achieved, making the backflushing gas more evenly distributed across the entire filter screen surface, improving cleaning efficiency. The alternating arrangement of first branch pipe 222 and the two second branch pipes 223 further optimizes airflow distribution, ensuring that backflushing gas can cover the entire filter screen surface, reducing cleaning dead zones. Regular backflushing can maintain the cleanliness of the filter screen, extend its service life, and improve the operating efficiency of the dust removal device.

[0045] Furthermore, the first branch pipe 222 has three air inlets 224 arranged at intervals, and the second branch pipe 223 has two air inlets 224 arranged at intervals.

[0046] By setting three air inlets 224 on the first branch pipe 222 and two air inlets 224 on each of the second branch pipes 223, multi-point air blowing can be achieved, making the back-blowing gas more evenly distributed across the entire filter surface and improving the cleaning effect.

[0047] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A dust removal device for an airflow pulverizer, characterized in that, include: A dust collector (100) has an opening at its upper end. A back-blowing device (200) is detachably connected to the top of the dust collector (100). The dust collector (100) is provided with an air outlet pipe (110) and an air inlet pipe (120) for connecting to the air outlet of an air jet mill. A partition plate (130) is provided inside the dust collector (100). The partition plate (130) is provided with a plurality of filter ports (140). Each of the plurality of filter ports (140) is provided with a filter assembly (150). The filter assembly (150) includes a filter screen and a filter for fixing the filter screen. The filter screen fixing device (151) includes a mounting base (152) and a hollow cage (153) for inserting into the filter screen. The hollow cage (153) is connected to the mounting base (152). The mounting base (152) is detachably connected to the partition plate (130). The partition plate (130) divides the dust collector (100) into a collection chamber (160) and a filter chamber (170). The air inlet pipe (120), the collection chamber (160), the filter chamber (170) and the air outlet pipe (110) are connected in sequence. A dust collector (300) is connected to the exhaust pipe (110).

2. The dust removal device for an airflow pulverizer according to claim 1, characterized in that, The fixing device (151) also includes a hollow air guide tube (154), which is disposed inside the hollow cage (153) and connected to the mounting base (152).

3. The dust removal device for an airflow pulverizer according to claim 2, characterized in that, The aperture of the air guide tube (154) gradually decreases along its extension direction.

4. The dust removal device for an airflow pulverizer according to claim 1, characterized in that, The bottom of the hollow cage (153) is provided with a partition (155).

5. A dust removal device for an airflow pulverizer according to claim 1, characterized in that, The partition plate (130) is provided with an annular protrusion (131), and the mounting base (152) is provided with an annular groove (156) that cooperates with and connects to the annular protrusion (131).

6. A dust removal device for an airflow pulverizer according to claim 1, characterized in that, The backflush device (200) includes a backflush hood (210) and an air blowing pipe (220) disposed inside the backflush hood (210).

7. A dust removal device for an airflow pulverizer according to claim 6, characterized in that, The air blowing pipe (220) includes a main pipe (221) for air intake and a first branch pipe (222) and two second branch pipes (223) respectively connected to the main pipe (221). The two second branch pipes (223) are arranged alternately with the first branch pipe (222). Both the first branch pipe (222) and the second branch pipes (223) are provided with air blowing ports (224).

8. A dust removal device for an airflow pulverizer according to claim 7, characterized in that, The first branch pipe (222) has three air inlets (224) arranged at intervals, and the second branch pipe (223) has two air inlets (224) arranged at intervals.

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