Self-cleaning pulse cloth bag dust collector

Abstract

The application relates to a self-cleaning pulse cloth bag dust collector, and belongs to the technical field of industrial dust removal equipment. The dust collector comprises a dust removal cylinder, and a dust cleaning area, a gas purification area and a particle cleaning area are sequentially arranged in the dust removal cylinder. A partition plate with through holes and cloth bags is arranged in the gas purification area. A cleaning unit is arranged in the dust cleaning area and comprises a gas guide pipe with second air holes and a gas supply unit. A cleaning device is arranged in the particle cleaning area and comprises a plurality of scraper plates driven to rotate by a driving assembly. Through the synergistic effect of pulse dust removal and mechanical scraping, efficient removal of dust on the surface of the cloth bag and continuous automatic cleaning of the bottom dust are realized, the dust hopper is effectively prevented from being hardened and the dust removal is not smooth. Elastic supporting members arranged in the cloth bag can keep the cloth bag in an expanded state, improving the filtering and dust removal effects. In addition, the optional synergistic purification component can pre-settle, disturb and adjust the temperature of the inlet air, and the adaptability of the equipment to complex working conditions is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of industrial dust removal equipment, and in particular to a self-cleaning pulse bag filter. Background Technology

[0002] Pulse jet baghouse dust collectors are highly efficient dust removal devices widely used in industrial production. Their working principle involves passing dust-laden gas through filter bags made of woven fabric. Dust is trapped on the outer surface of the bags, while clean gas exits from the inside. As dust accumulates on the outer surface of the bags, the operating resistance of the equipment gradually increases, necessitating regular cleaning of the filter bags.

[0003] Traditional pulse jet baghouse dust collectors generally employ pulse jet cleaning technology, which involves injecting high-pressure airflow into the filter bags instantaneously, causing the bags to expand and vibrate rapidly, thus shaking off the accumulated dust layer on the surface. The shaken-off dust falls into the ash hopper at the bottom of the dust collector under gravity and is eventually discharged through the ash removal device. However, in practical applications, this technology has the following significant shortcomings: the dust accumulated at the bottom of the ash hopper is difficult to remove smoothly by gravity alone, easily causing bridging or blockage, resulting in poor ash removal and requiring frequent manual intervention for cleaning.

[0004] Dust settling at the bottom of traditional dust collectors tends to accumulate and clog, resulting in poor automated dust removal. At the same time, the filter bags lack effective internal support, making them prone to collapse and sticking during filtration and cleaning, which affects their stable operation and cleaning effect. Summary of the Invention

[0005] To address the issues of easy ash caking at the bottom and lack of support for the filter bags affecting performance in traditional pulse jet baghouse dust collectors, this application provides a self-cleaning pulse jet baghouse dust collector.

[0006] The self-cleaning pulse bag filter provided in this application adopts the following technical solution: A self-cleaning pulse bag filter includes a dust collection cylinder. An inlet pipe, an outlet pipe, and a dust outlet pipe are disposed on the outer wall of the dust collection cylinder and communicate with its inner cavity. The dust collection cylinder's inner cavity is characterized by the following: a dust removal zone, a gas purification zone, and a particle cleaning zone are sequentially arranged; a partition plate is fixedly connected to the inner wall of the dust collection cylinder, specifically within the gas purification zone; the partition plate has several through holes, and a filter bag for isolating dust is fixedly connected to the inner wall of each through hole; a cleaning unit for blowing dust onto the filter bag surface is disposed within the dust removal zone; several first air holes are provided around each through hole on the partition plate; the cleaning unit includes several air guide pipes with second air holes and an air supply unit connected to the air guide pipes; a cleaning device is disposed within the particle cleaning zone, the cleaning device including several scrapers for cleaning the bottom wall of the dust collection cylinder and a drive assembly for rotating the scrapers.

[0007] By adopting the above technical solution, this dust collector integrates filtration, dust removal, and bottom cleaning into one unit through functional zoning design. The pulse jet cleaning unit can effectively remove dust accumulated on the surface of the filter bags, while the sweeping device can actively scrape and collect the dust settled at the bottom and discharge it through the dust outlet pipe, effectively preventing the bottom dust from caking and realizing a continuous and automated dust removal and discharge process.

[0008] Preferably, the drive assembly includes a drive source fixedly connected to the center of the bottom surface of the dust collector, a rotating shaft rotatably connected to the middle of the bottom wall of the dust collector, a connecting disc fixedly connected to the outer wall of the rotating shaft, a plurality of scrapers fixedly connected to the outer wall of the connecting disc in the circumferential direction, the bottom end of the rotating shaft passing through the bottom wall of the dust collector and fixedly connected to the output shaft of the drive source, and a reinforcing rod fixedly connected between two adjacent scrapers.

[0009] By adopting the above technical solution, the drive source drives the connecting disc and all scrapers to rotate synchronously via the rotating shaft, resulting in a compact structure and stable transmission. The reinforcing rod enhances the overall structural rigidity of the scraper assembly, making it more stable and reliable during rotational scraping.

[0010] Preferably, the scraper is arc-shaped, and the concave surface of the scraper is consistent with the direction of scraper rotation.

[0011] By adopting the above technical solution, the arc-shaped scraper with its concave surface facing the direction of rotation can better gather and push dust when rotating, thereby improving scraping efficiency and reducing driving energy consumption.

[0012] Preferably, a plurality of connecting plates are fixedly connected to the inner wall of the dust collector cylinder, below the filter bag, and a fixing hook is fixedly connected to the bottom end of the filter bag, the fixing hook being connected to the connecting plates.

[0013] By adopting the above technical solution, the bottom of the cloth bag is fixed by hooking it to the connecting plate, which makes installation and disassembly simple and facilitates the maintenance or replacement of individual cloth bags in the future.

[0014] Preferably, each of the bags is provided with an elastic element to keep the bag expanded when not under stress. The bottom end of the elastic element is connected to the bottom wall of the bag, and the top end of the elastic element is connected to the top surface of the partition plate through a fixing ring.

[0015] By adopting the above technical solution, the built-in elastic element provides continuous radial support for the filter bag, preventing the filter bag from being sucked down under the negative pressure of filtration and from sticking together after cleaning, thus ensuring the stability of the filtration area and the uniform penetration of the pulse cleaning airflow, thereby improving the filtration efficiency and cleaning effect.

[0016] Preferably, the air supply unit is fixedly connected to the outer wall of the dust collector by means of a bracket, and a number of branch pipes are fixedly connected to the air supply unit. The other end of the branch pipe passes through the dust collector and is fixedly connected to the corresponding air guide pipe.

[0017] By adopting the above technical solution, the gas supply unit is externally mounted and connected to the internal gas duct via a branch pipe, which facilitates the installation, maintenance, and connection of the gas source pipeline. The bracket provides stable support.

[0018] Preferably, a fixing frame is fixedly connected to the outer wall of the air guide pipe, and the fixing frame is fixedly connected to the inner wall of the dust collector.

[0019] By adopting the above technical solution, the fixing frame ensures the installation stability of the air guide pipe in the dust collector, prevents it from vibrating or displacing under the reaction force of the pulse airflow, and ensures the accuracy of the blowing direction.

[0020] Preferably, a synergistic purification component is connected to the inner wall of the dust collector. The synergistic purification component includes a spiral baffle fixedly connected to the inner wall of the dust collector, and a plurality of turbulence units disposed on the spiral baffle.

[0021] By adopting the above technical solution, the spiral baffle can guide the dust-laden gas upward along the spiral path, increasing the air passage length and promoting the pre-settling of large dust particles. The turbulence unit can further turbulent and pre-treat the airflow, improving the subsequent filtration effect, and is especially suitable for complex working conditions.

[0022] Preferably, the bottom surface of the spiral baffle is provided with a plurality of mounting grooves along its spiral direction, and the turbulence unit includes a connecting box fixedly connected to the inner wall of the mounting groove, a plurality of turbulence plates fixedly connected to the bottom wall of the connecting box, and a phase change material filled in the connecting box.

[0023] By adopting the above technical solution, the modular baffle unit is easy to install. The baffle can disperse the airflow, and the phase change material can absorb or release heat, playing a buffering and regulating role in the airflow temperature, reducing the direct impact of high-temperature or low-temperature gases on the filter bag, and extending the filter bag's life.

[0024] Preferably, each of the aforementioned spoilers extends partially into the inner cavity of the connecting box, and the length of the portion of each spoiler extending out of the connecting box decreases sequentially along the airflow direction.

[0025] By adopting the above technical solution, the stepped decreasing length spoiler design forms a gradual spoiler structure, which allows the airflow to pass more smoothly and evenly. While achieving spoilering, it effectively reduces local resistance and increases the heat exchange area with the phase change material, thereby improving the temperature control effect.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a cleaning device that includes scrapers and drive components, the automatic and continuous scraping and removal of settled dust at the bottom of the dust collector is realized, which effectively solves the problems of easy caking of dust accumulation at the bottom and poor dust discharge, and reduces the frequency and intensity of maintenance. 2. By setting elastic support components inside the filter bag, the filter bag can maintain an expanded state during the filtration and cleaning cycles, avoiding the collapse and sticking of the filter bag, ensuring a stable effective filtration area, and improving filtration efficiency and pulse cleaning effect. 3. By setting up a synergistic purification component that includes spiral baffles and a turbulence unit with built-in phase change material, the incoming dust-laden gas can be pre-settled, turbulent, and its temperature regulated. It is particularly suitable for complex working conditions with high temperature, high humidity, or sticky dust, protecting the filter bags and improving the environmental adaptability and operational stability of the entire equipment. Attached Figure Description

[0027] Figure 1 This is a perspective view of the self-cleaning pulse bag filter in Embodiment 1 of this application.

[0028] Figure 2 It is about Figure 1 Sectional view at TT.

[0029] Figure 3 yes Figure 2 A magnified view at point A.

[0030] Figure 4 This is a schematic diagram of the structure of the cloth bag in Embodiment 1 of this application.

[0031] Figure 5 This is a schematic diagram of the cleaning device in Embodiment 1 of this application.

[0032] Figure 6 This is a schematic diagram of the cleaning unit in Embodiment 1 of this application.

[0033] Figure 7 yes Figure 6 A magnified view at point B.

[0034] Figure 8 This is a schematic diagram of the structure of the self-cleaning pulse bag filter in Embodiment 2 of this application after the addition of a collaborative purification component.

[0035] Figure 9 This is a structural schematic diagram of the collaborative purification component in Embodiment 2 of this application.

[0036] Figure 10 This is a schematic diagram of the structure of the turbulence unit in Embodiment 2 of this application.

[0037] Figure 11 This application is about Figure 1 A stereoscopic view when viewed from the C-angle.

[0038] Explanation of reference numerals in the attached drawings: 1. Dust collector; 11. Inlet pipe; 12. Outlet pipe; 13. Dust outlet pipe; 14. Dust removal area; 15. Gas purification area; 16. Particle removal area; 17. Connecting plate; 2. Divider plate; 21. Through hole; 22. Bag; 221. Fixing hook; 222. Elastic element; 223. Fixing ring; 3. Cleaning unit; 31. Air guide pipe; 32. Air supply unit; 311. Air hole; 312. Fixing frame; 321. Support; 322. Branch pipe; 4. Cleaning device; 41. Scraper; 42. Drive assembly; 411. Reinforcing rod; 421. Drive source; 422. Rotating shaft; 423. Connecting plate; 5. Collaborative purification component; 51. Spiral baffle; 52. Turbulence unit; 511. Mounting groove; 521. Connecting box; 522. Turbulence plate; 523. Phase change material. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail. Example

[0040] This application discloses a self-cleaning pulse bag filter, referring to... Figure 1 and Figure 2 The system includes a dust collection cylinder 1, a cleaning unit 3, and a cleaning device 4. An inlet pipe 11 and an outlet pipe 12 are fixedly connected to the outer wall of the dust collection cylinder 1. A partition plate 2 is fixedly connected to the upper part of the inner wall of the dust collection cylinder 1. The partition plate 2 divides the inner cavity of the dust collection cylinder 1 into two independent sub-chambers. The inlet pipe 11 is located below the partition plate 2, and the outlet pipe 12 is located above the partition plate 2. A dust outlet pipe 13 is fixedly connected to either side of the bottom wall of the dust collection cylinder 1. It should be noted that the inlet pipe 11, the outlet pipe 12, and the dust outlet pipe 13 all communicate with the inner cavity of the dust collection cylinder 1.

[0041] The inner cavity of the dust collector 1 is divided into a dust removal zone 14, a gas purification zone 15, and a particle cleaning zone 16 from top to bottom. The dust removal zone 14 is located above the partition plate 2, the gas purification zone 15 is located below the partition plate 2, and the particle cleaning zone 16 is located on the bottom wall of the dust collector 1.

[0042] The initial principle achieved so far is as follows: Unpurified dust-laden gas enters the gas purification zone 15 inside the dust collector 1 through the inlet pipe 11, where impurities and particulate matter in the gas are purified. Subsequently, the purified clean gas is discharged through the outlet pipe 12 and enters subsequent equipment or processes.

[0043] Specifically, the air inlet pipe 11 is connected to the side wall of the dust collector 1 in a tangential direction, so that the incoming gas flows in a rotating manner close to the inner wall of the dust collector 1.

[0044] Reference Figures 2 to 4 The partition plate 2 has several through holes 21 arranged in an array. The top surface of the partition plate 2 is fixedly connected with the same number of fixing rings 223 as the through holes 21. The fixing rings 223 are coaxially arranged with the through holes 21, and the diameter of the fixing rings 223 is larger than the diameter of the through holes 21. A filter bag 22 is also fixedly connected to the inner wall of each through hole 21, and a fixing hook 221 is fixedly connected to the bottom surface of each filter bag 22. On the inner wall of the dust collector 1, below all the filter bags 22, several connecting plates 17 are fixedly connected, spaced apart from each other. The fixing hooks 221 are detachably hung on the corresponding connecting plates 17. Meanwhile, each bag 22 is provided with an elastic element 222 (preferably a spring frame) inside. The top end of the elastic element 222 is fixedly connected to the bottom surface of the fixing ring 223, and the bottom end of the elastic element 222 is fixedly connected to the bottom wall of the bag 22. It should be noted that the elastic element 222 abuts against the inner wall of the bag 22, so that the bag 22 remains expanded when not under force.

[0045] Unpurified dust-laden gas enters the gas purification area 15 inside the dust collector 1 through the inlet pipe 11. The gas then passes through the filter bag 22 and enters the filter bag 22. The particles in the gas are blocked on the outer wall of the filter bag 22, and a few particles fall onto the bottom wall of the dust collector 1. Finally, the purified gas is guided by the filter bag 22 and enters the spacer plate 2 above it. Finally, it enters the next process through the outlet pipe 12.

[0046] Reference Figure 5The cleaning device 4 is installed in the particle cleaning area 16 (i.e., on the bottom wall of the dust collector 1) to remove dust settled on the bottom wall of the dust collector 1. The cleaning device 4 includes several scrapers 41 and a drive assembly 42. The drive assembly 42 includes a drive source 421, a rotating shaft 422, and a connecting plate 423. The drive source 421 (preferably a geared motor) is fixedly connected to the center of the bottom surface of the dust collector 1 via a motor mount. The rotating shaft 422 is vertically arranged, with its middle part rotatably connected to the center of the bottom wall of the dust collector 1 via a bearing, and its bottom end extending downward through the dust collector 1 and fixedly connected to the output shaft of the drive source 421. The connecting plate 423 is fixedly connected to the outer wall of the rotating shaft 422 located inside the dust collector 1. Several scrapers 41 are evenly distributed circumferentially and fixedly connected to the outer wall of the connecting plate 423. The bottom of the scrapers 41 is in contact with the bottom wall of the dust collector 1. A reinforcing rod 411 is welded between two adjacent scrapers 41 to improve the overall structural rigidity. It should be noted that the scraper 41 is preferably designed to be arc-shaped, and its concave surface faces the same direction as the rotation direction of the scraper 41 (i.e., the rotation direction driven by the drive assembly 42) to facilitate the collection and pushing of dust.

[0047] Reference Figure 6 and Figure 7 The cleaning unit 3 is located within the dust removal area 14 and is used for pulse-jet cleaning of the filter bags 22. The cleaning unit 3 includes several air guide pipes 31 and an air supply unit 32. Several air guide pipes 31 are horizontally suspended above the partition plate 2, and each air guide pipe 31 has multiple air holes 311 on its wall facing downwards towards the filter bags 22. A fixing frame 312 is fixedly connected to the outer wall of the several air guide pipes 31, and the fixing frame 312 is fixedly connected to the bottom wall of the dust collector 1. A bracket 321 is fixedly connected to the air supply unit 32 (preferably an air pump), and the bracket 321 is fixedly connected to the outer wall of the dust collector 1. Several branch pipes 322 are fixedly connected to the air outlet of the air supply unit 32. The other end of each branch pipe 322 passes through the side wall of the dust collector 1 and is fixedly connected to and communicates with the end of the corresponding air guide pipe 31.

[0048] The implementation principle of this first embodiment is as follows: Dust-laden gas enters the gas purification zone 15 of the dust collector 1 through the tangentially connected inlet pipe 11. The inlet method causes the gas to adhere tightly to the cylinder wall, forming a downward rotating vortex. Some large particles are directly thrown against the cylinder wall and settle under centrifugal force. The gas then passes through the filter bags 22, where dust is trapped on the outer surface. The purified gas enters the interior of the filter bags 22, rises through the through holes 21 of the partition plate 2, enters the dust removal zone 14, and is finally discharged through the outlet pipe 12.

[0049] When the dust accumulation on the outer wall of the filter bag 22 reaches a certain level, the cleaning unit 3 is activated. The air supply unit 32 generates compressed gas, which is delivered to each air guide pipe 31 via the branch pipe 322. The compressed gas is injected downwards through the air holes 311 on the air guide pipe 31, forming a pulsed airflow. This airflow enters the interior of the filter bag 22 through the top, causing the filter bag 22 to expand and shake instantly. At the same time, the elastic element 222 intensifies this vibration, thereby effectively shaking off the dust adhering to the outer surface of the filter bag 22. The removed dust falls into the particle cleaning area 16 below under the action of gravity.

[0050] Dust settling on the bottom wall of the dust collector 1 is handled by the cleaning device 4. The drive assembly 42 drives the connecting disc 423 and several scrapers 41 mounted on it to rotate. The arc-shaped scrapers 41 continuously gather the dust facing their concave surfaces and push it towards the dust outlet 13 located on one side of the cylinder wall, thereby achieving dust collection and discharge. Example

[0051] Based on the self-cleaning pulse bag filter basic structure provided in Embodiment 1, this application has optimized the technical problem in Embodiment 2 that under high-temperature conditions, uneven gas temperature and excessively fast flow rate can easily lead to condensation, scouring, or clogging of the filter bag 22, thereby affecting filtration efficiency and lifespan.

[0052] Reference Figure 8 A co-purification component 5 is added to the inner wall of the dust collector 1. The co-purification component 5 includes a spiral baffle 51 and several turbulence units 52.

[0053] Reference Figure 8 and Figure 9 The spiral baffle 51 is spiral-shaped, and its outer edge is fixedly connected to the inner wall of the dust collector 1. Multiple mounting slots 511 are formed on the bottom surface of the spiral baffle 51 along its spiral direction. Several turbulence units 52 are respectively installed in the corresponding mounting slots 511.

[0054] Reference Figure 9 and Figure 10 The turbulence unit 52 includes a connecting box 521 and turbulence plates 522. The connecting box 521 is a closed box structure, fixedly connected to the inner wall of the mounting groove 511. Several turbulence plates 522 are arranged side by side and fixedly connected to the bottom surface of the connecting box 521. The top of each turbulence plate 522 extends into the inner cavity of the connecting box 521. It should be noted that along the airflow direction (i.e., the direction in which the gas descends along the spiral baffle 51), the length of the portion of each turbulence plate 522 extending out of the connecting box 521 decreases sequentially, thus forming a stepped turbulence structure. The turbulence plates 522 are inclined. The inner cavity of the connecting box 521 is filled with a phase change material 523, which is in full contact with the portion of each turbulence plate 522 extending into the box.

[0055] In this embodiment, the phase change material 523 is preferably paraffin wax, and the filling height is two-thirds of the inner cavity of the connecting box 521.

[0056] It should be noted that, referring to Figure 10 On the windward side of each turbulence unit 52, a vortex zone b is formed by the windward surface of the first turbulence plate 522 and the bottom surface of the connecting box 521. When the airflow carrying fine particles passes through this area, a strong rotating vortex is generated. Under the action of centrifugal force, some particles separate from the gas and then settle along the surface of the turbulence plate 522 under the influence of gravity, eventually falling to the bottom wall of the dust collector 1.

[0057] The implementation principle of this embodiment 2 is as follows: First, the spiral baffle 51 guides the tangentially entering gas to rotate and descend, extending the flow path and reducing the flow velocity, so that the coarse particles are thrown towards the cylinder wall and settle under the action of centrifugal force, thus achieving primary separation.

[0058] Secondly, on the windward side of each turbulence unit 52, the airflow is blocked and divided by the stepped turbulence plate 522, resulting in violent rotation within the formed local vortex zone b. Fine particles are thrown out under the centrifugal force of the vortex, impacting and adhering to the surface of the turbulence plate 522, and finally sliding down and depositing along the plate surface, thus achieving secondary capture of fine dust.

[0059] Meanwhile, the tops of all the baffles 522 extend into the connecting box 521 filled with phase change material 523, making the baffles 522 also efficient heat exchange fins. When the temperature of the flowing gas is too high, heat is transferred to the phase change material 523 through the baffles 522, and the material absorbs heat and undergoes a phase change (such as melting), preventing the gas temperature from rising further. When the gas temperature is too low, the phase change material 523 releases the stored heat, which is used to heat the airflow through the baffles 522, preventing its temperature from dropping below the dew point. This process effectively stabilizes the airflow temperature and prevents the filter bag 22 from being blocked by condensation or damaged by high temperature.

[0060] Finally, it should be noted that, as of [date / time], Figure 11A flameless explosion relief valve 121 is fixedly connected to the end of the exhaust pipe 12 away from the dust collector 1. A connecting pipe 6 is fixedly connected to the outer wall of the dust collector 1 on the side away from the inlet pipe 11. A first connecting flange 7 is fixedly connected to the end of the connecting pipe 6 away from the dust collector 1. A second flange 8 is spaced apart on the side of the first flange 7 away from the connecting pipe 6. An explosion relief disc 9 is installed between the first flange 7 and the second flange 8. After the first flange 7 and the second flange 8 clamp the explosion relief disc 9, the first flange 7 and the second flange 8 are fixedly connected together using several bolt groups. In this way, when a deflagration occurs inside the dust collector 1 due to dust accumulation and the pressure reaches the rated explosion threshold of the explosion relief disc 9, the explosion relief disc 9 will break first to release the impact pressure. The remaining flame will enter the exhaust pipe 12 with the venting airflow and will be further blocked and extinguished by the flameless explosion relief valve 121 at the end. With double protection, secondary explosions in the external working area can be effectively avoided, and the safety level of the equipment can be greatly improved.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-cleaning pulse bag filter, comprising a dust collection cylinder (1), wherein an inlet pipe (11), an outlet pipe (12), and a dust outlet pipe (13) communicating with the inner cavity of the dust collection cylinder (1) are provided on the outer wall of the dust collection cylinder (1), characterized in that: The dust removal cylinder (1) is provided with a dust removal area (14), a gas purification area (15) and a particle cleaning area (16) in sequence. A partition plate (2) is fixedly connected to the inner wall of the dust collector (1) and within the gas purification area (15). The partition plate (2) has several through holes (21), and a cloth bag (22) for isolating dust is fixedly connected to the inner wall of the through holes (21). The dust removal area (14) is equipped with a cleaning unit (3) for blowing dust off the surface of the cloth bag (22). The cleaning unit (3) includes several air guide pipes (31) with air holes (311) and an air supply unit (32) connected to the air guide pipes (31). The particle cleaning area (16) is equipped with a cleaning device (4), which includes several scrapers (41) for cleaning the bottom wall of the dust collector (1) and a drive assembly (42) for driving the scrapers (41) to rotate.

2. The self-cleaning pulse bag filter according to claim 1, characterized in that: The drive assembly (42) includes a drive source (421) fixedly connected to the center of the bottom surface of the dust collector (1), a rotating shaft (422) rotatably connected to the middle of the bottom wall of the dust collector (1), a connecting plate (423) fixedly connected to the outer wall of the rotating shaft (422), a plurality of scrapers (41) fixedly connected to the outer wall of the connecting plate (423) in the circumferential direction, the bottom end of the rotating shaft (422) passing through the bottom wall of the dust collector (1) and fixedly connected to the output shaft of the drive source (421), and a reinforcing rod (411) fixedly connected between two adjacent scrapers (41).

3. A self-cleaning pulse bag filter according to any one of claims 1 to 2, characterized in that: The scraper (41) is arc-shaped, and the concave surface of the scraper (41) is consistent with the direction of rotation of the scraper (41).

4. A self-cleaning pulse bag filter according to claim 1, characterized in that: On the inner wall of the dust collector (1) and below the cloth bag (22), a number of connecting plates (17) are fixedly connected. The bottom end of the cloth bag (22) is fixedly connected to a fixing hook (221), which is connected to the connecting plate (17).

5. A self-cleaning pulse bag filter according to claim 1, characterized in that: Each of the bags (22) is provided with an elastic element (222) to keep the bag (22) expanded when it is not under stress. The bottom end of the elastic element (222) is connected to the bottom wall of the bag (22), and the top end of the elastic element (222) is connected to the top surface of the partition plate (2) through a fixing ring (223).

6. A self-cleaning pulse bag filter according to claim 1, characterized in that: The air supply unit (32) is fixedly connected to the outer wall of the dust collector (1) by means of a bracket (321). Several branch pipes (322) are fixedly connected to the air supply unit (32). The other end of the branch pipe (322) passes through the dust collector (1) and is fixedly connected to the corresponding air guide pipe (31).

7. A self-cleaning pulse bag filter according to claim 1, characterized in that: A fixing frame (312) is fixedly connected to the outer wall of the air duct (31), and the fixing frame (312) is fixedly connected to the inner wall of the dust collector (1).

8. A self-cleaning pulse bag filter according to claim 1, characterized in that: The dust collector (1) is connected to a co-purification component (5). The co-purification component (5) includes a spiral baffle (51) fixedly connected to the inner wall of the dust collector (1) and a plurality of turbulence units (52) disposed on the spiral baffle (51).

9. A self-cleaning pulse bag filter according to claim 8, characterized in that: The bottom surface of the spiral baffle (51) is provided with a plurality of mounting slots (511) along its spiral direction. The turbulence unit (52) includes a connecting box (521) fixedly connected to the inner wall of the mounting slot (511), a plurality of turbulence plates (522) fixedly connected to the bottom wall of the connecting box (521), and a phase change material (523) filled in the connecting box (521).

10. A self-cleaning pulse bag filter according to claim 9, characterized in that: Each of the aforementioned baffles (522) extends partially into the inner cavity of the connecting box (521), and the length of the portion of each baffle (522) extending out of the connecting box (521) decreases sequentially along the airflow direction.

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