Cleaning type filter bag assembly capable of being alternately used at regular time

Abstract

The invention relates to the field of filter bags, in particular to a regularly and alternately used cleaning type filter bag assembly, comprising: a filter bag mechanism, which comprises a mounting disc and a plurality of filter bags, and each filter bag is sequentially mounted on the disc surface edge part of the mounting disc along the circumferential direction of the mounting disc; the mounting mechanism is used for rotatably mounting and supporting the filter bag mechanism; the power mechanism is in transmission connection with the mounting disc so as to drive the mounting disc to rotate and drive the plurality of filter bags to be circularly and alternately positioned on a filtering station and a cleaning station; and the cleaning mechanism comprises a pressure gas conveying device for introducing cleaning and flushing gas into the filter bag at the cleaning station. According to the cleaning type filter bag assembly capable of being alternately used at regular time, the situation that the filter bag is blocked is reduced, and it is ensured that the filter bag can be normally used.

Description

Technical Field

[0001] This invention relates to filter bag assemblies for industrial flue gas purification, and more specifically to a timed, alternating cleaning filter bag assembly. Background Technology

[0002] Industrial production, especially the operation of boilers burning coal and biomass, generates flue gas containing large amounts of dust, fly ash, and other solid particulate matter. Direct emissions would cause serious air pollution, therefore, efficient purification treatment is essential. Baghouse dust collectors are a widely used flue gas purification device, with filter bags as their core filtration element. As flue gas passes through the filter bags, particulate matter is trapped on the surface or inside the filter bags, while clean gas is discharged through the filter material.

[0003] When used for a long time, solid particles in the boiler flue gas will clog the filter bags. If they are not cleaned in time, they will become clogged and cannot be used normally. This is a problem of filter bags being easily clogged and unable to function properly.

[0004] Traditional fixed filter bags, during continuous flue gas filtration, gradually accumulate dust on their surface, which may embed deep within the filter media. As operating time increases, filtration resistance (pressure differential) rises, leading to increased system energy consumption, decreased filtration efficiency, and in severe cases, complete clogging and loss of filtration capacity. To address clogging, periodic shutdowns and manual cleaning methods such as tapping and backflushing are typically required. This approach not only disrupts production continuity but also results in uneven cleaning, high labor intensity, and the presence of blind spots. For boiler systems requiring continuous operation, frequent shutdowns for cleaning are impractical.

[0005] In existing technologies, although there are designs that use multiple filter bags connected in parallel and rotate them for cleaning via valve switching, the valve switching mechanism is complex, prone to failure, and requires high sealing performance. Some designs attempt to rotate the filter bags to alternately contact the flue gas, but they often lack efficient, timely, and targeted cleaning mechanisms.

[0006] Therefore, there is an urgent need to design a filter bag assembly that can be used and cleaned alternately on a timed basis.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome or alleviate the defects of existing filter bags, such as easy clogging, need for shutdown for cleaning, and low degree of automation, and to provide a filter bag assembly that can automatically rotate work at regular intervals, clean online in a timely and efficient manner, and ensure continuous and stable operation.

[0009] To address the aforementioned technical problems, this invention provides a timed alternating cleaning filter bag assembly, comprising: a filter bag mechanism including a mounting plate and multiple filter bags, each filter bag being sequentially mounted on the edge portion of the mounting plate along its circumference; a mounting mechanism rotatably supporting the filter bag mechanism; a power mechanism connected to the mounting plate to drive the mounting plate to rotate, thereby causing the multiple filter bags to alternately occupy filtration and cleaning positions; and a cleaning mechanism including a pressurized gas delivery device for introducing cleaning and rinsing gas into the filter bags at the cleaning position. In this basic embodiment, by providing a rotatable filter bag mechanism driven cyclically by the power mechanism, this invention allows the filter bags to take turns performing filtration tasks. The cleaning mechanism cleans the filter bags immediately after they leave the filtration position. This solution achieves spatial and temporal separation and connection between filtration and cleaning, ensuring that at least some filter bags are always in working condition, thus enabling continuous filtration without stopping the machine. At the same time, it ensures that each filter bag can be cleaned in a timely manner after use, effectively avoiding serious clogging problems caused by dust accumulation.

[0010] In some embodiments, the mounting disc is an annular disc with a central hole; an internal gear ring is provided on the inner circumferential surface of the central hole of the mounting disc, and the drive gear of the power mechanism meshes with the internal gear ring to drive the mounting disc to rotate. In this embodiment, the annular mounting disc structure is stable and provides a uniform mounting base surface for the filter bags. The internal gear ring on the inner circumferential surface of the central hole of the mounting disc meshes with the power mechanism, forming an internal gear transmission pair. This transmission method has a compact structure, accommodating the drive components inside the annulus, saving external space, providing smooth transmission and large torque, and reliably driving the mounting disc and multiple filter bags under heavy loads to rotate.

[0011] Optionally, the mounting plate has multiple through holes distributed circumferentially on its edge surface, each through hole communicating with the air inlet of the corresponding filter bag. In this optional structure, the through holes serve as flue gas inlets, and their circumferential array layout ensures that the air intake conditions of each filter bag are basically consistent and the flow rate is uniform when the filter bags rotate to the filtration station. Simultaneously, this distribution helps balance the rotational inertia of the mounting plate, making rotation smoother and facilitating positioning and control of peripheral equipment such as cleaning mechanisms.

[0012] Optionally, the mounting mechanism includes an annular frame, within which the mounting disc is rotatably mounted; the power mechanism is at least partially located within the annular frame and is drive-connected to the mounting disc. In this embodiment, using an annular frame as the main mounting structure provides stable and essentially centered support for the circular mounting disc, while placing the power mechanism inside the annular frame fully utilizes the internal space of the structure, resulting in a more compact overall layout and providing some shielding against harsh external environments.

[0013] Optionally, the annular frame includes an outer ring and an inner ring. The mounting plate is rotatably fitted into the mounting groove between the outer ring and the inner ring. The peripheral wall of the inner ring has a through opening for the drive gear to extend into, so that the internal gear ring meshes with the drive gear. The mounting mechanism also includes a partition plate disposed on the end face of the annular frame facing away from the filter bag, dividing the through holes into two sides. During operation, the rotation of the mounting plate causes some of the through holes to be located sequentially at the filtration station corresponding to one side of the partition plate, while the remaining through holes are located at the cleaning station corresponding to the other side of the partition plate. In this specific implementation structure, the mounting groove provides axial positioning and radial limiting for the mounting plate, ensuring its rotation trajectory is relatively accurate. The baffle is a key dividing component. It divides the internal space of the annular frame into a "side with boiler flue gas" and a "side without boiler flue gas". It is set between the through holes, which means that when the mounting plate rotates, each through hole and the corresponding filter bag will be alternately divided into different areas by the baffle, thus physically realizing the switching between the filtering and non-filtering states. The structure is simple and reliable.

[0014] Optionally, a baffle plate is sealingly provided at the end of the inner ring facing away from the filter bag to prevent boiler flue gas from contacting the power mechanism through the central hole during operation. In this specific embodiment, the baffle plate is sealed to the inner side of the bottom of the annular frame, forming a bottom protective barrier. This effectively prevents high-temperature, dusty flue gas from intruding into the inner cavity of the annular frame from below, thereby protecting the power mechanism located in the inner cavity from the corrosion of flue gas and the effects of high temperature. This significantly improves the reliability and service life of the core transmission components and reduces maintenance requirements.

[0015] Specifically, the cleaning mechanism includes a cylinder, an isolation cover, and a gas pipe connector serving as the pressurized gas delivery device. The cylinder body is fixed to the annular frame, and its push rod is connected to the isolation cover via a first connecting plate. The gas pipe connector is located on the isolation cover and communicates with the cavity of the isolation cover. In this embodiment, a cylinder-driven isolation cover scheme is adopted, with the cylinder providing linear drive power, resulting in direct and accurate action. The isolation cover is used to cover the opening of the filter bag during cleaning, forming a relatively closed cleaning chamber. The gas pipe connector is connected to high-pressure gas. This cleaning mechanism can realize an automated cleaning process of "positioning-covering-blowing," requiring virtually no manual intervention.

[0016] More specifically, the isolation cover is cylindrical and located above the filter bag. The cylinder, through the extension and retraction of its rod, drives the isolation cover downward via the first connecting plate to cover the air inlet of the filter bag located at the cleaning station, thus connecting the air inlet to the cavity of the isolation cover. In this optional embodiment, the cylindrical isolation cover fits the top shape of the cylindrical filter bag, facilitating a good seal or coverage and ensuring that high-pressure gas can effectively enter the filter bag for backflushing. Placing the isolation cover above the filter bag and driving it downward by the cylinder aligns with the direction of gravity, ensuring smooth movement. The air pipe connector is located at the top for easy connection to an external air source pipeline, and the airflow enters from top to bottom, which helps to better blow away dust.

[0017] Typically, the power mechanism includes a motor and a drive gear driven by the motor, with the motor fixed to the annular frame. In this typical structure, the motor-drive gear combination is a mature and reliable method. The drive gear meshes with the gear ring inside the mounting plate, converting the motor's rotational motion into the mounting plate's rotational motion. By controlling the motor's start, stop, and rotation angle, the filter bag's station switching can be precisely controlled. Furthermore, by fixing the motor housing to the annular frame, the entire drive system is integrated with the main frame, resulting in good structural rigidity and stable operation.

[0018] Typically, the timed alternating cleaning filter bag assembly also includes a control system electrically connected to the power mechanism and the cleaning mechanism. This control system is configured to control the intermittent rotation of the mounting plate driven by the power mechanism and the timed start and stop of the cleaning mechanism. In this embodiment, the control system is an automated control device that achieves "timed" and "alternating" operation. The control system can automatically control the motor to rotate intermittently according to a preset time program or based on differential pressure sensor signals. After the mounting plate stops rotating and the filter bag is aligned with the cleaning station, it automatically triggers the cylinder to operate and the high-pressure valve to open, completing the cleaning cycle. This achieves fully automated intelligent operation of the entire assembly, significantly reducing manual operation and maintenance costs.

[0019] Through the above technical solution, the timed alternating cleaning filter bag assembly of the present invention, by using the filter bag mechanism, installation mechanism, power mechanism and cleaning mechanism in cooperation, can replace the filter bag at regular intervals and clean the filter bag, thereby achieving the effect of cleaning the particulate matter on the filter bag at regular intervals, reducing the occurrence of filter bag clogging and ensuring that the filter bag can be used normally. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the timed alternating cleaning filter bag assembly provided in an embodiment of the present invention; Figure 2 Another overall structural schematic diagram of the timed alternating use cleaning filter bag assembly provided in an embodiment of the present invention; and Figure 3 This is another overall structural diagram of the timed alternating use cleaning filter bag assembly provided in an embodiment of the present invention.

[0021] Reference Marking Description 1. Filter bag mechanism; 11 Mounting plate; 12 Internal gear ring; 13 Through hole; 14 Filter bag; 15 Center hole; 2. Installation mechanism; 21 Circular frame; 22 Partition plate; 23 Baffle plate; 24 Inner ring; 25 Outer ring; 3. Power mechanism; 31 Motor; 32 Drive gear; 4. Cleanup agencies; 41 Cylinder; 42 Isolation cover; 43 Air pipe connector; 44 First connecting plate; 45 Second connecting plate. Detailed Implementation

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

[0023] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0024] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are merely schematic diagrams and should not be construed as limiting the scope of protection. Unless otherwise specified, the following embodiments and features described herein can be combined with each other.

[0027] Reference Figures 1 to 3 The timed alternating cleaning filter bag assembly of the basic embodiment of the present invention includes: a filter bag mechanism 1, which includes a mounting plate 11 and a plurality of filter bags 14, wherein each filter bag 14 is sequentially mounted on the edge portion of the mounting plate 11 along the circumference of the mounting plate 11; a mounting mechanism 2, which rotatably mounts and supports the filter bag mechanism 1; a power mechanism 3, which is drivenly connected to the mounting plate 11 to drive the mounting plate 11 to rotate and drive the plurality of filter bags 14 to cyclically alternate between the filtration station and the cleaning station; and a cleaning mechanism 4, which includes a pressurized gas delivery device for introducing cleaning and rinsing gas into the filter bags 14 in the cleaning station.

[0028] In the above basic implementation, the core concept is to allow multiple filter bags 14 to "take turns on duty and be cleaned immediately after use." The filter bag mechanism 1 is the moving and actuating part of the entire assembly, consisting of a mounting plate 11 and multiple (e.g., 6-8) filter bags 14 mounted on it. The mounting mechanism 2 (mainly the annular frame 21) is similar to a large bearing seat, providing a stable mounting support base and rotation track for the filter bag mechanism 1. The power mechanism 3 provides the rotational power, driving the mounting plate 11 to rotate intermittently at a set rhythm. The cleaning mechanism 4 plays the cleaning function, located at the cleaning station. Whenever a filter bag 14 completes a period of filtration work and leaves the flue gas-filled filtration station with the rotation of the mounting plate 11, reaching the designated cleaning station, the cleaning mechanism 4 immediately starts to perform high-pressure gas backflushing cleaning on the filter bag 14. This cycle repeats continuously, achieving continuous filtration work and timely filter bag cleaning. Its technical advantage lies in breaking down the continuous filtration process into the cyclical operation of multiple filtration units, and through closely linked cleaning actions, each unit can be restored before it becomes clogged, thereby systematically solving the clogging problem and ensuring the long-term stable and efficient operation of the dust removal system.

[0029] See Figure 2 As shown, in this embodiment, the mounting plate 11 can be designed as a large-diameter ring with a central hole, which can be made of rolled or cast steel plate and has good rigidity. A complete internal gear ring 12 is machined or installed on the inner circumferential surface of the central hole 15. Correspondingly, a small-sized drive gear (i.e., drive gear 32) is provided at the output end of the power mechanism 3. During operation, the drive gear 32 extends into the inner side of the ring and meshes with the internal gear ring 12. When the drive gear 32 rotates, through meshing with the internal gear ring 12, it drives the entire annular mounting plate 11 to rotate smoothly around its central axis. This internal meshing transmission method encloses the drive device inside the component, making the external structure simple, the transmission chain short, the efficiency high, and providing a large transmission torque to overcome rotational resistance.

[0030] In some embodiments, such as Figure 1 and Figure 2 As shown, a ring of through holes 13 is uniformly drilled around the circumference of the annular mounting plate 11. Each through hole 13 is connected to a filter bag 14 via clamps, flanges, or welding, ensuring that the air inlet of the filter bag 14 is strictly aligned with and sealed to the through hole 13. Boiler flue gas enters the filter bag 14 from one side of the mounting plate 11 (filtration station) through these through holes 13 for filtration. The circumferential array (uniform) distribution of the through holes 13 ensures that the number of filter bags at the filtration station is fixed and reasonably distributed at any time during rotation, resulting in stable flue gas flow. Furthermore, this symmetrical distribution ensures uniform mass distribution of the mounting plate 11, good rotational balance, and reduced vibration and bearing wear.

[0031] In some embodiments, the main body of the mounting mechanism 2 can be a robust annular frame 21, which is typically fixed to the dust collector housing by a bracket. A circular hole, slightly larger than the outer diameter of the mounting plate 11, is formed at the center of the annular frame 21. The mounting plate 11 passes through this hole and is rotatably connected to the annular frame 21 via components such as bearings or wear-resistant slip rings (not shown). The drive gear 32 of the power mechanism 3 extends from the inside of the annular frame 21 and meshes with the internal gear ring 12 on the mounting plate 11. The advantage of this design is that the annular frame 21 not only bears the entire weight of the filter bag mechanism 1 and the flue gas load, but also protects the transmission components within its structure, avoiding direct contact with the flue gas, resulting in high structural integration.

[0032] More specifically, the annular frame 21 may include an outer ring 25 and an inner ring 24. The mounting plate 11 is rotatably fitted into the mounting groove between the outer ring 25 and the inner ring 24, and the peripheral wall of the inner ring 24 has a through opening for the drive gear 32 to extend into, so that the internal gear ring 12 meshes with the drive gear 32. In addition, an annular positioning groove may be machined on the inner peripheral contact surface of the annular frame 21 facing the mounting plate 11. The corresponding part of the mounting plate 11 is embedded in the positioning groove, which provides good axial positioning and prevents the mounting plate 11 from axially moving during rotation.

[0033] See Figure 2 The mounting mechanism 2 may further include a partition 22, which is disposed on the end face of the annular frame 21 facing away from the filter bag. The partition 22 not only connects the inner ring 24 and the outer ring 25, but also divides the through holes 13 into two sections located on either side of the partition. During operation, the rotation of the mounting plate 11 causes some of the through holes to be sequentially located at the corresponding filtration positions on one side of the partition, while the remaining through holes are located at the corresponding cleaning positions on the other side of the partition 22. The partition 22 can be a radially arranged plate structure. In actual use, its inner edge is fixedly connected to the annular frame 21 (e.g., welded), and its outer edge extends to the side wall of the dust collector housing and is sealed. Figure 1 As shown, the baffle 22 is positioned precisely between the two through holes 13. When the mounting plate 11 is not rotating, the baffle 22 isolates a portion of the through holes 13 and the filter bags 14 below them from the flue gas zone. When the mounting plate 11 rotates by an angle (i.e., the spacing of one filter bag), the filter bags that were originally in the flue gas zone enter the non-flue gas zone for cleaning, while the next clean filter bag enters the flue gas zone to take over the work. The baffle 22 acts as a static space distributor, and its technical effect is to achieve mechanized and absolute workstation division without the need for complex valve switching, resulting in extremely high reliability.

[0034] To protect the power mechanism 3 inside the annular frame 21, a ring-shaped baffle plate 23 is welded or installed near the bottom of the annular frame 21. This baffle plate 23 seals against the inner wall of the annular frame 21, creating a relatively closed "clean chamber" inside the frame. Even if there is a small amount of boiler flue gas leakage, it will be blocked by the baffle plate 23, preventing it from penetrating downwards and reaching the precision transmission components such as the motor 31 and drive gear 32 located below. This significantly improves the service life and reliability of the power mechanism in harsh environments with high temperatures and dust, and is one of the key design features enabling this component to operate maintenance-free for extended periods.

[0035] In some embodiments, the cleaning mechanism 4 includes a cylinder 41, an isolation cover 42, and a gas pipe connector 43 serving as a pressurized gas delivery device. The cylinder body of the cylinder 41 is fixed to the annular frame 21, for example, by means of a second connecting plate 45 fixed to the inner ring 24 of the annular frame 21 (the power mechanism 3 described below can also be fixed to the second connecting plate 45). Its push rod is connected to the isolation cover 42 via a first connecting plate 44. The gas pipe connector 43 is disposed on the isolation cover 42 and communicates with the cavity of the isolation cover 42.

[0036] The cleaning mechanism 4 operates in two steps: closing and blowing. The cylinder 41 serves as the power source, its body securely mounted on the annular frame 21 via an L-shaped second connecting plate 45. The piston rod (push rod) of the cylinder 41 points vertically downwards, its end connected to the top of the cylindrical isolation cover 42 via a first connecting plate 44. An air pipe connector 43 is installed on the top or side of the isolation cover 42 and connected to an external pulse valve and pressure source via a high-pressure hose. When the control system issues a cleaning command, the piston rod of the cylinder 41 retracts, pushing the isolation cover 42 downwards, causing its lower end face to press against or fit onto the top mounting ring of the filter bag 14 located at the cleaning station, forming a temporary sealed chamber. Subsequently, the pulse valve opens, and high-pressure gas instantly rushes into the isolation cover 42 through the air pipe connector 43 and flows downward at high speed into the interior of the filter bag 14, causing it to expand rapidly and shake off the dust cake layer attached to the bag wall. This achieves precise and powerful dust removal at fixed points and times, with concentrated dust removal energy, good effect, and no impact on other filter bags that are in operation.

[0037] In this embodiment, the isolation cover 42 is preferably cylindrical, with its inner diameter slightly larger than the outer diameter of the mounting flange at the top of the filter bag 14, to ensure smooth installation. Positioned directly above the filter bag and driven vertically by a cylinder, the mechanism operates in a single direction, is easy to control, and readily meets sealing requirements. The air pipe connector 43 is positioned at the top center of the isolation cover 42, allowing high-pressure gas to be injected vertically downwards from the center, resulting in a relatively uniform airflow distribution. This facilitates even cleaning of the entire filter bag, preventing missed areas from being cleaned.

[0038] In some embodiments, the power mechanism 3 may include a motor 31, a reducer (optional), and a drive gear 32. The motor 31 is bolted to the second connecting plate 45, and its output shaft drives the drive gear 32 via a coupling or directly. The drive gear 32 is made of wear-resistant steel and meshes precisely with the internal gear ring 12 of the mounting plate 11. The control system controls the motor 31 to rotate intermittently in both forward and reverse directions or unidirectionally, rotating only a fixed angle each time it starts (for example, 45 degrees if there are 8 filter bags), sending the next filter bag into the filtration station and sending the used filter bags into the cleaning station. This driving method is precise and controllable, forming the basis for achieving timed alternation.

[0039] Typically, this invention can also be equipped with a PLC or microcontroller control system (not shown in the figure). The control system receives signals from a timer or differential pressure transmitter. Two operating modes can be set: one is pure time control, which starts a rotation and dust removal cycle every fixed time interval (e.g., 30 minutes); the other is differential pressure control, which automatically starts a dust removal cycle when the differential pressure between the inlet and outlet of the dust collector reaches a set upper limit. The control system output signals control the driver (e.g., frequency converter) of motor 31 and the solenoid valve of cleaning mechanism 4 (controlling cylinder 41 and pulse valve). Through program arrangement, the action sequence is ensured to be: motor start → mounting plate rotates one position → motor stops → cylinder actuates (closing) → pulse valve opens (purge) → pulse valve closes → cylinder resets (lifts). The entire process is automated, requiring no manual operation, with a high degree of intelligence, achieving energy-saving, efficient, and stable operation management.

[0040] As can be seen from the above description, the core concept of this invention is to allow multiple filter bags 14 to "take turns on duty and be cleaned immediately after use." The filter bag mechanism 1 is the moving and executing part of the entire assembly, including a mounting plate 11 and multiple filter bags 14 mounted on it. The mounting mechanism 2 provides a stable mounting support base and a rotation track for the filter bag mechanism 1. The power mechanism 3 provides the rotational power, driving the mounting plate 11 to rotate intermittently according to a set rhythm. The cleaning mechanism 4 plays the cleaning function and is located in the cleaning station. Whenever a filter bag 14 completes a period of filtration work and leaves the flue gas-filled filtration station with the mounting plate 11, reaching the designated cleaning station, the cleaning mechanism 4 immediately starts to perform high-pressure gas backflushing cleaning on the filter bag 14. This cycle repeats continuously, achieving continuous filtration work and timely filter bag cleaning. The timed alternating cleaning filter bag assembly of the present invention, through the coordinated use of the filter bag mechanism 1, the installation mechanism 2, the power mechanism 3, and the cleaning mechanism 4, periodically replaces and cleans the filter bags, achieving the effect of regularly removing particulate matter from the filter bags, reducing the occurrence of filter bag clogging, and ensuring the normal use of the filter bags. The technical advantage of the present invention lies in decomposing the continuous filtration process into the cyclical operation of multiple filtration units, and through closely linked cleaning actions, ensuring that each unit is restored before clogging occurs, thereby systematically solving the clogging problem and ensuring the long-term stable and efficient operation of the dust removal system.

[0041] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

[0042] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0043] Similarly, although the operations are described in a specific order in the accompanying drawings, this should not be construed as requiring the specific order or sequence shown to perform such operations, or all the described operations, in order to obtain the desired result. Furthermore, the separation of various system components in the embodiments of this patent document should not be construed as requiring such separation in all embodiments.

[0044] Only some implementations and examples are described; other implementations, enhancements, and variations can be made based on the content described and illustrated in this patent document.

[0045] While several embodiments are provided in this disclosure, it should be understood that the disclosed systems and methods may be embodied in many other specific forms without departing from the spirit or scope of this disclosure. The present examples are intended to be illustrative rather than restrictive and are not limited to the details given. For example, various elements or components may be combined or integrated into another system, or certain features may be omitted or not implemented.

Claims

1. A timed, alternating cleaning filter bag assembly, characterized in that: include: The filter bag mechanism (1) includes a mounting plate (11) and a plurality of filter bags (14), each of the filter bags (14) being sequentially mounted on the edge portion of the mounting plate (11) along the circumference of the mounting plate (11); Installation mechanism (2) is rotatably mounted on the filter bag mechanism (1). A power mechanism (3), which is connected to the mounting plate (11) for transmission, is capable of driving the mounting plate (11) to rotate and causing multiple filter bags (14) to alternately move between the filtration station and the cleaning station; and The cleaning mechanism (4) includes a pressurized gas delivery device for introducing cleaning and flushing gas into the filter bag (14) at the cleaning station.

2. The timed alternating cleaning filter bag assembly according to claim 1, characterized in that: The mounting plate (11) is an annular disc with a central hole (15); An internal gear ring (12) is provided on the inner circumferential surface of the center hole (15) of the mounting plate (11). The drive gear (32) of the power mechanism (3) meshes with the internal gear ring (12) to drive the mounting plate (11) to rotate.

3. The timed alternating cleaning filter bag assembly according to claim 2, characterized in that: The mounting plate (11) has multiple through holes (13) distributed circumferentially on the edge of the plate surface, and each through hole (13) is connected to the air inlet of the corresponding filter bag (14).

4. The timed alternating cleaning filter bag assembly according to claim 3, characterized in that: The mounting mechanism (2) includes an annular frame (21), and the mounting plate (11) is rotatably mounted within the annular frame (21); The power mechanism (3) is located at least partially within the annular frame (21) and is connected in drive to the mounting plate (11).

5. The timed alternating cleaning filter bag assembly according to claim 4, characterized in that: The annular frame (21) is an annular frame including an outer ring (25) and an inner ring (24). The mounting plate (11) is rotatably fitted into the mounting groove between the outer ring (25) and the inner ring (24), and the peripheral wall of the inner ring (24) has a through opening for the drive gear (32) to extend into, so that the internal gear ring (12) meshes with the drive gear (32); and The installation mechanism (2) further includes a partition (22), which is disposed on the end face of the annular frame (21) facing away from the filter bag and divides the through hole (13) into two sides. Thus, during operation, by rotating the installation plate (11), some of the through holes are located in the filter station corresponding to one side of the partition, and the remaining through holes are located in the cleaning station corresponding to the other side of the partition (22).

6. The timed alternating cleaning filter bag assembly according to claim 5, characterized in that: A baffle plate (23) is provided at one end of the inner ring (24) facing away from the filter bag (14) to prevent boiler flue gas from contacting the power mechanism (3) through the central hole (15) during operation.

7. The timed alternating cleaning filter bag assembly according to any one of claims 1 to 6, characterized in that: The cleaning mechanism (4) includes a cylinder (41), an isolation cover (42), and a pipe connector (43) used as the pressurized gas delivery device. The cylinder body of the cylinder (41) is fixed on the annular frame (21), and its push rod is connected to the isolation cover (42) through the first connecting plate (44); The tracheal connector (43) is disposed on the isolation cover (42) and communicates with the cavity of the isolation cover (42).

8. The timed alternating cleaning filter bag assembly according to claim 7, characterized in that: The isolation cover (42) is cylindrical and located above the filter bag (14). The cylinder (41) can drive the isolation cover (42) to move downward via the first connecting plate (44) through the extension and retraction of the cylinder rod to cover the air inlet of the filter bag (14) located at the cleaning station, and make the air inlet communicate with the cavity of the isolation cover (42).

9. The timed alternating cleaning filter bag assembly according to any one of claims 1 to 6, characterized in that: The power mechanism (3) includes a motor (31) and a drive gear (32) driven by the motor (31), the motor (31) being fixed to the annular frame (21).

10. The timed alternating cleaning filter bag assembly according to any one of claims 1 to 6, characterized in that: It also includes a control system electrically connected to the power mechanism (3) and the cleaning mechanism (4), the control system being configured to control the power mechanism (3) to drive the intermittent rotation of the mounting plate (11) and the cleaning mechanism (4) to start and stop at regular intervals.

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