Anti-static composite filter bag structure

Abstract

The present application relates to filter bag technical field, specifically, it relates to a kind of anti-static composite filter bag structure.It contains filter bag, the filter bag is prefabricated into S type, the inside of the filter bag is provided with bag cage.In filtering state, compression spring naturally stretches, pushes in-rod outward, makes the arc block of left and right sides from the hollow slot corresponding to bag cage cylinder wall stretch out, and the filter bag is regularly supported into continuous S type, both increase the actual filtering area in unit height, and make airflow pass along wave-shaped channel evenly, avoid the problem of high-speed scouring at the inlet of traditional straight cylinder filter bag and low flow rate dust accumulation at bottom;In the starting moment of pulse dust cleaning, high-pressure airflow flows into from filter bag mouth, and rapidly establishes positive pressure in the inside: on one hand, air pressure acts on the inside of all arc blocks, is transmitted to connecting block and in-rod, overcomes compression spring elastic force, makes in-rod retract synchronously outer rod, arc block is withdrawn into hollow slot as a whole, and filter bag loses S type support, and is rapidly straightened into straight line type.

Description

Technical Field

[0001] This invention relates to the field of filter bag technology, and in particular to an antistatic composite filter bag structure. Background Technology

[0002] As the mainstream equipment in the field of industrial flue gas purification, baghouse dust collectors rely on the filter bags' high-efficiency dust interception capability. Traditional filter bags generally adopt a cylindrical structure, supported internally by rigid or semi-rigid cages to maintain their basic shape and prevent filter media collapse. However, this cylindrical configuration has inherent defects: on the one hand, the effective filtration area per unit height is limited, which can easily lead to excessively high filtration velocities when handling large air volumes or high concentrations of dust, exacerbating the risk of dust penetration and increasing operating resistance; on the other hand, after the dust-laden airflow enters the filter bag, a high-speed scouring zone is often formed in the inlet area, while a low-velocity or even stagnant zone is formed at the bottom due to the attenuation of flow velocity, causing premature clogging of the upper filter media and dust accumulation and compaction at the bottom, significantly increasing the difficulty of dust removal.

[0003] To improve filtration performance, existing technologies have attempted to increase the surface area of ​​filter bags through pleats, corrugations, or folds. However, such structures often rely on the shaping of the filter media itself and lack rigid support. Under long-term operation or pulse cleaning impact, they are prone to deformation and instability, resulting in a decrease in the actual filtration area. In addition, even if some solutions introduce deformable support frames, they often only focus on overall shaking and cleaning, neglecting the bottom cleaning blind spot of the filter bag. Since dust is easily accumulated and compacted at the bottom due to gravity settling, conventional backflushing is difficult to remove effectively. In view of this, we propose an antistatic composite filter bag structure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an antistatic composite filter bag structure to solve the problems of limited effective filtration area per unit height of traditional cylindrical filter bags and easy clogging of the upper filter material and slow airflow at the bottom leading to dust caking during cleaning.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] An antistatic composite filter bag structure includes a filter bag pre-formed into an S-shape. A bag cage is located inside the filter bag, and multiple sets of control components are arranged from top to bottom inside the bag cage. A collision component is located below the control components. The control components include arc-shaped blocks for supporting the filter bag, and the collision component includes a metal disc for generating vibration. When the filter bag performs filtration, the alternately arranged elastic arc-shaped blocks on the bag cage naturally extend, maintaining the S-shaped configuration of the filter bag. Simultaneously, the metal disc in the collision component remains stationary under the combined action of magnetic attraction and gravity. After pulse cleaning is initiated, a high-pressure airflow rushes in instantaneously, pushing the arc-shaped blocks to retract synchronously into the bag cage, causing the filter bag to rapidly change from an S-shape to a straight shape. Furthermore, the air pressure drives the metal disc to overcome magnetic force and gravity, moving axially upwards and impacting the bottom of the bag cage.

[0007] Optionally, the multiple sets of control components include an upper left positioning block and a lower right positioning block located inside the bag cage. The upper left positioning block is located above the lower right positioning block, and slide rails are fixedly connected to both ends of the upper left positioning block and the lower right positioning block.

[0008] Optionally, an outer rod is fixedly connected inside the slide rail, and a compression spring is fixedly connected inside the outer rod. One end of the compression spring is fixedly connected to an inner rod, and the inner rod slides inside the outer rod through the compression spring.

[0009] Optionally, a connecting block is fixedly connected to one end of the inner rod, and one end of the connecting block is fixedly connected to the arc-shaped block. A protective film for the filter bag is affixed to the side of the arc-shaped block near the filter bag.

[0010] Optionally, the components in the multiple sets of control components are arranged alternately up and down, the filter bag is supported in an S-shape, and the upper left positioning block and the lower right positioning block are both provided with positioning holes for positioning.

[0011] Optionally, the collision assembly includes a mounting base located below a metal disk, both of which have built-in permanent magnets.

[0012] Optionally, a guide frame is fixedly connected in a circumferential array on the fixed base, and the metal disk and the permanent magnet inside the metal disk are slidably connected to the guide frame.

[0013] Optionally, the permanent magnets inside the metal disk and the fixed base are of the same pole and generate a repulsive force between them.

[0014] Optionally, a fixing rod is fixedly connected to the axis of the bag cage, and the fixing rod is adapted to the positioning holes on the upper left positioning block and the lower right positioning block.

[0015] Optionally, the top of the fixing rod is bolted with a top cover for fixing the filter bag, the bottom of the bag cage is fixedly connected to the top of the guide frame, and the bag cage is provided with multiple hollow grooves that are adapted to the arc-shaped block to cooperate with the contraction movement of the arc-shaped block.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, the compression spring naturally extends during the filtration state, pushing the inner rod outward, so that the arc-shaped blocks on the left and right sides extend out from the hollow grooves corresponding to the bag cage wall, regularly stretching the filter bag into a continuous S-shape. This not only increases the actual filtration area per unit height, but also allows the airflow to pass through the waveform channel evenly, avoiding the problems of high-speed scouring at the inlet and low-velocity dust accumulation at the bottom of traditional straight-tube filter bags.

[0018] At the moment the pulse cleaning starts, high-pressure airflow rushes in from the filter bag opening, quickly establishing positive pressure inside. On one hand, the air pressure acts on the inner side of all the arc-shaped blocks, transmitting to the connecting blocks and inner rods, overcoming the spring force of the compression springs, causing the inner rods to retract synchronously to the outer rods, and the arc-shaped blocks to retreat into the hollow grooves as a whole. The filter bag loses its S-shaped support and quickly straightens into a straight line. This rapid deformation causes violent overall shaking. The dust layer attached to the surface of the filter bag cannot move synchronously with the filter material due to inertia, thus detaching the entire piece from the fiber surface. It has a strong cleaning ability, especially for loose or moderately adhesive dust in the upper and middle areas, significantly reducing residual resistance and avoiding repeated cleaning.

[0019] On the other hand, after the airflow reaches the bottom of the filter bag, it applies an upward thrust to the lower surface of the metal disc, so that the thrust exceeds the sum of the weight of the metal disc and the magnetic repulsion generated by the same pole permanent magnet in the fixed seat below. The metal disc then moves upward at high speed along the inner wall of the guide frame and impacts the bottom of the bag cage. This vibration is transmitted upward along the bag cage frame to the bottom of the filter bag, effectively disturbing the high-density, high-viscosity dust that has accumulated at the root of the filter bag for a long time due to gravity settling, humidity compaction, or airflow bypass. This type of dust is usually difficult to be blown off directly by the back-blowing airflow, but the mechanical energy generated by the impact can loosen or even disintegrate it, greatly improving the thoroughness of bottom cleaning. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0021] Figure 1 A schematic diagram of the overall structural assembly of an antistatic composite filter bag;

[0022] Figure 2 An assembly diagram of a bag cage, control component, and collision component for an antistatic composite filter bag structure;

[0023] Figure 3 A three-dimensional diagram demonstrating the motion of an arc-shaped block in an antistatic composite filter bag structure;

[0024] Figure 4 This is a demonstration diagram of an arc-shaped block supporting a filter bag in an antistatic composite filter bag structure.

[0025] Figure 5 A diagram illustrating the motion of a control component for an antistatic composite filter bag structure;

[0026] Figure 6 A split view of the control component of an antistatic composite filter bag structure;

[0027] Figure 7 A schematic diagram of a collision component for an antistatic composite filter bag structure;

[0028] Figure 8 This is a demonstration diagram of the impact of a collision component for an antistatic composite filter bag structure.

[0029] Figure 9 A schematic cross-sectional view of an antistatic composite filter bag structure;

[0030] Figure 10 This is a schematic diagram of a bag cage for an antistatic composite filter bag structure.

[0031] Figure label:

[0032] 100. Filter bag; 200. Bag cage; 201. Fixing rod; 202. Top cover; 300. Control assembly; 301. Upper left positioning block; 302. Lower right positioning block; 303. Slide rail; 304. Outer rod; 305. Inner rod; 306. Connecting block; 307. Arc block; 400. Collision assembly; 401. Metal disc; 402. Fixing base; 403. Permanent magnet; 404. Guide frame.

[0033] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0034] The antistatic composite filter bag structure provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0035] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0036] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0037] It is understood that the meanings of “on”, “above” and “above” in this disclosure should be interpreted in the broadest sense, such that “on” means not only “directly on” something, but also includes something with an intermediary feature or layer, and that “above” or “above” means not only “on” something, but also includes something “above” or “above” without an intermediary feature or layer.

[0038] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0039] like Figures 1 to 10As shown, an embodiment of the present invention provides an antistatic composite filter bag structure, comprising a filter bag 100 pre-formed into an S-shape, a bag cage 200 disposed inside the filter bag 100, and multiple sets of control components 300 disposed from top to bottom inside the bag cage 200, with a collision component 400 disposed below the multiple sets of control components 300; the control components 300 include an arc-shaped block 307 for supporting the filter bag 100, and the collision component 400 includes a metal disc 401 for generating vibration; the filter bag 100 performs filtration operations. At this time, the elastic arc-shaped blocks 307 alternately arranged on the bag cage 200 naturally extend, keeping the filter bag 100 in an S-shaped configuration; simultaneously, the metal disc 401 in the collision assembly 400 remains stationary under the combined action of magnetic attraction and gravity; after the pulse cleaning is started, high-pressure airflow rushes in instantaneously, on the one hand pushing each arc-shaped block 307 to retract synchronously into the inside of the bag cage 200, causing the filter bag 100 to quickly change from an S-shape to a straight shape; on the other hand, the air pressure drives the metal disc 401 to overcome magnetic force and gravity, move upward along the axial direction and impact the bottom of the bag cage 200; During filtration, the elastic arc-shaped blocks 307 naturally extend outwards, maintaining a stable S-shaped profile for the filter bag 100. This curved shape effectively increases the filtration area per unit length and guides the airflow to distribute evenly along the waveform path, avoiding localized high-speed scouring, thereby improving dust collection efficiency and slowing down resistance growth. At this time, the bottom metal disc 401 is stably attached to the bottom of the bag cage 200 under the action of magnetic attraction and its own gravity, without causing interference. When pulse cleaning is activated, high-pressure airflow instantly enters the interior of the filter bag 100, and the air pressure rises rapidly, which on the one hand affects the elastic blocks 307, and on the other hand affects the filter bag 100 to maintain a stable S-shaped profile. The arc-shaped block 307 applies an inward force, causing it to retract synchronously into the body of the bag cage 200. The filter bag 100 is then straightened from an S-shape to a straight shape. This rapid deformation causes the filter bag 100 to shake violently as a whole, causing the surface dust layer to peel off over a large area due to inertia. At the same time, air pressure acts on the bottom of the metal disc 401, generating a thrust sufficient to overcome magnetic attraction and gravity, pushing it to rush upward at high speed along the axial direction and impact the bottom of the bag cage 200, forming an instantaneous impact vibration, which is specifically designed to remove the accumulated dust deposited on the bottom of the filter bag 100 that is difficult to disturb by conventional airflow.

[0040] As an implementation method in this embodiment, such as Figures 2 to 6As shown, the multiple control components 300 include an upper left positioning block 301 and a lower right positioning block 302 located inside the bag cage 200. The upper left positioning block 301 is located above the lower right positioning block 302. Both ends of the upper left positioning block 301 and the lower right positioning block 302 are fixedly connected to slide rails 303. An outer rod 304 is fixedly connected inside the slide rail 303. A compression spring is fixedly connected inside the outer rod 304. One end of the compression spring is fixedly connected to an inner rod 305. The inner rod 305 slides inside the outer rod 304 due to the compression spring. One end of the inner rod 305 is fixedly connected to a connecting block 306. One end of the connecting block 306 is fixedly connected to an arc-shaped block 307. A protective film for the filter bag 100 is attached to the side of the arc-shaped block 307 closest to the filter bag 100. The components in the multiple control components 300 are distributed alternately up and down, supporting the filter bag 100 in an S-shape. Positioning holes for positioning are opened inside the upper left positioning block 301 and the lower right positioning block 302.

[0041] In this embodiment, therefore, in the filtration state, the compression spring is in a naturally extended state, pushing the inner rod 305 outward from the outer rod 304, causing the connecting block 306 and the arc-shaped block 307 fixed thereto to move outward synchronously; since the upper left positioning block 301 and the lower right positioning block 302 are arranged alternately inside the bag cage 200, and the arc-shaped blocks 307 connected to them extend from the upper left and lower right sides of the bag cage 200 respectively, they alternately support the inner wall of the filter bag 100, so that the filter bag 100 is regularly shaped into a continuous S-shaped contour. This S-shaped structure is not formed by the folds of the filter material itself, but is actively constructed by the rigid support points. Therefore, it is stable in shape and not easy to collapse, effectively increasing the actual filtration area per unit height, and guiding the airflow to pass evenly along the wave channel, avoiding local high-speed scouring or low-speed dead zones.

[0042] When pulse cleaning is activated, the instantaneously increased air pressure inside the filter bag 100 applies radial inward pressure to the inner side of all the arc-shaped blocks 307. This pressure is transmitted to the connecting block 306 and the inner rod 305, overcoming the elasticity of the compression spring and forcing the inner rod 305 to slide inward along the inner wall of the outer rod 304. This causes the arc-shaped blocks 307 to retract synchronously into the hollow groove inside the bag cage 200. Due to the synchronous action of the upper left and lower right arc-shaped blocks 307 in each set of control components 300, the entire S-shaped support structure disappears within milliseconds. The filter bag 100 quickly straightens from a bent state to a straight line. This rapid deformation process causes the filter bag 100 to shake violently, causing the surface dust layer to peel off over a large area due to inertia, significantly improving the cleaning efficiency.

[0043] After the dust removal is completed, the internal air pressure drops, the compression spring returns to its original length, and the inner rod 305 is pushed out again. The arc-shaped block 307 extends again, and the filter bag 100 automatically resets to an S-shape, entering the next filtration cycle. The entire movement process is completed by the energy stored in the spring and the air pressure drive, without the need for external energy. It is responsive and has reliable reset. At the same time, the slide rail 303 constrains the two ends of the upper left positioning block 301 and the lower right positioning block 302, ensuring that the arc-shaped block 307 moves only in a radial straight line, avoiding deflection and jamming. The protective membrane isolates the metal arc-shaped block 307 from direct contact with the filter bag 100, preventing scratches on the filter material during repeated extension and retraction, and extending its service life.

[0044] In addition, the upper left positioning block 301 and the lower right positioning block 302 are fitted onto the central fixing rod 201 of the bag cage 200 through their internal positioning holes, ensuring that the installation positions of the multiple sets of control components 300 in the axial and circumferential directions are precisely consistent, making the S-shaped contour regular and symmetrical, and the force balanced. This avoids local twisting or stress concentration of the filter bag 100 due to misalignment of support points. This structural design not only achieves dual optimization of filtration area and dust removal performance, but also ensures mechanical stability and reliability during long-term operation.

[0045] As an implementation method in this embodiment, such as Figure 7 and Figure 8 As shown, the collision assembly 400 includes a fixed base 402 located below the metal disk 401. Both the metal disk 401 and the fixed base 402 have permanent magnets 403 built into them. A guide frame 404 is fixedly connected to the fixed base 402 in a circumferential array. The metal disk 401 and the permanent magnets 403 inside the metal disk 401 are slidably connected to the guide frame 404. The permanent magnets 403 inside the metal disk 401 and the fixed base 402 have the same pole and generate mutual repulsion force.

[0046] In this embodiment, during the normal filtration stage of the filter bag 100, the metal disc 401 is located directly above the fixed base 402, and the permanent magnets 403 embedded inside both are opposite each other with the same pole (e.g., both have their N poles facing each other), generating a stable magnetic repulsion force. This repulsion force causes the metal disc 401 to suspend above the fixed base 402 in a small gap when no external force is applied, avoiding friction or adhesion caused by direct contact. At the same time, the metal disc 401 and its built-in permanent magnets 403 are tightly surrounded and slidably fitted by the guide frame 404 arranged in a circumferential array, restricting it to only move up and down along the axial direction of the bag cage 200, and preventing radial offset or rotation. In this state, the metal disc 401 remains stationary under the balance of magnetic repulsion force and its own gravity, without interfering with the filtration airflow or generating additional vibration.

[0047] When pulse cleaning is initiated, high-pressure airflow rapidly enters the bottom of filter bag 100. The air pressure acts on the lower surface of metal disc 401, forming an upward thrust. Since guide frame 404 provides a low-friction vertical slide, this thrust can be efficiently converted into the axial kinetic energy of metal disc 401. The air pressure thrust exceeds the sum of gravity and magnetic repulsion on metal disc 401, causing metal disc 401 to rapidly rise along guide frame 404 and violently impact the bottom inner wall of bag cage 200 in a very short time. This impact is not random shaking, but a precise, vertical, and concentrated impact ensured by guide frame 404, which can effectively stimulate high-frequency vibration at the bottom of bag cage 200 and filter bag 100, specifically removing stubborn dust layers accumulated at the bottom of filter bag 100 due to gravity settling, humidity adhesion, or airflow around the filter bag. After the impact, the pulse air pressure rapidly decays, and magnetic repulsion and gravity regain dominance, pushing metal disc 401 smoothly back to the initial suspension position along guide frame 404, preparing for the next cleaning cycle.

[0048] As an implementation method in this embodiment, such as Figure 9 and Figure 10 As shown, a fixing rod 201 is fixedly connected to the axis of the bag cage 200, and the fixing rod 201 is adapted to the positioning holes on the upper left positioning block 301 and the lower right positioning block 302. The top of the fixing rod 201 is bolted to a top cover 202 for fixing the filter bag 100. The bottom of the bag cage 200 is fixedly connected to the top of the guide frame 404, and the bag cage 200 has multiple hollow grooves adapted to the arc-shaped block 307 to cooperate with the contraction movement of the arc-shaped block 307. Therefore, the fixing rod 201 is vertically set along the axis of the bag cage 200, and its outer diameter is precisely matched with the positioning holes inside the upper left positioning block 301 and the lower right positioning block 302, so that each set of control components 300 can be strictly fitted onto the fixing rod 201 during installation, stacked up and down along the axial direction and fixed in circumferential position. This design ensures that the upper left positioning block 301 is always on top and the lower right positioning block 302 is located diagonally below it, forming a regular staggered layout. This ensures that the arc-shaped blocks 307 extend alternately from the left and right sides of the bag cage 200, supporting the filter bag 100 into a symmetrical and continuous S-shaped profile. The top of the fixing rod 201 is connected to the top cover 202 by bolts. The top cover 202 presses against the upper port of the filter bag 100 and firmly fixes it to the top of the bag cage 200. This connection not only prevents the filter bag 100 from falling out due to violent shaking during pulse cleaning, but also ensures that the tension of the upper part of the filter bag 100 is evenly distributed, avoiding wrinkles or local loosening, and ensuring that the S-shaped configuration is completely transmitted from top to bottom. The bottom of the bag cage 200 is rigidly connected to the guide frame 404 of the collision component 400, so that the entire bag cage 200, guide frame 404 and fixing seat 402 form an integral force-bearing structure. When the metal disc 401 hits the bottom of the bag cage 200, the impact force can be effectively transmitted directly through the body of the bag cage 200 to the entire filter bag 100, rather than being absorbed and dissipated by the loose interface, thereby improving the efficiency of bottom vibration cleaning.

[0049] In addition, the wall of the bag cage 200 is provided with multiple hollow slots that correspond one-to-one with the arc-shaped blocks 307. The size and position of the slots match the extension path of the arc-shaped blocks 307. During filtration, the arc-shaped blocks 307 can extend smoothly from the hollow slots to support the filter bag 100. During dust removal, the arc-shaped blocks 307 can retract into the bag cage 200 without obstruction. The existence of the hollow slots provides a movement channel for the arc-shaped blocks 307 and avoids interference from the wall of the bag cage 200 on the extension and retraction.

[0050] The working principle of the technical solution provided by this invention is as follows:

[0051] Initial installation and filter preparation phase:

[0052] The filter bag 100 is prefabricated into an S-shape and fitted onto the outside of the bag cage 200. Multiple sets of control components 300 are installed axially inside the bag cage 200. Each set of control components 300 includes an upper left positioning block 301 and a lower right positioning block 302. An outer rod 304 is provided inside the slide rail 303. A compression spring is installed inside the outer rod 304. One end of the spring is connected to an inner rod 305. The inner rod 305 is fixed to the arc-shaped block 307 through a connecting block 306. A protective film is attached to the outside of the arc-shaped block 307 to avoid wear on the filter bag 100. A guide frame 404 is fixed at the bottom of the bag cage 200, on which a fixed seat 402 with a built-in permanent magnet 403 is installed. A metal disc 401 is located above the fixed seat 402, and a permanent magnet 403 with the same pole is also embedded inside it. The two are kept in a pre-separated state due to magnetic repulsion, and are stationary due to the balance of gravity and magnetic attraction / repulsion. A fixed rod 201 is provided in the center of the bag cage 200, which passes through the positioning holes of each positioning block. The top is connected to the top cover 202 by bolts to fix the upper end of the filter bag 100.

[0053] Filtration operation phase:

[0054] After the dust-laden gas enters the dust collector and passes through the filter bag 100, the compression springs in each control component 300 are in a naturally extended state, pushing the inner rod 305 outward and causing the arc-shaped block 307 to bulge out from the hollow groove of the bag cage 200, alternately supporting the filter bag 100 from the left and right, so that it maintains a stable S-shaped configuration. The S-shaped structure increases the effective filtration area and makes the airflow pass evenly along the waveform path, reducing the local wind speed and resistance growth rate. At the same time, the metal disc 401 remains stable under the combined action of its own gravity, magnetic repulsion, and the permanent magnet 403 of the fixed seat 402 below, and does not shift, thus avoiding interference with normal filtration.

[0055] Pulse cleaning triggering stage:

[0056] When the system pressure difference reaches the set value, the pulse valve opens, and high-pressure compressed air is instantly injected into the filter bag 100, forming a high-speed reverse airflow from top to bottom. The high-pressure airflow quickly establishes positive pressure inside the filter bag 100, applying inward pressure to all the arc blocks 307. This pressure is transmitted to the connecting block 306 and the inner rod 305, overcoming the elasticity of the compression spring, causing the inner rod 305 to retract into the outer rod 304, and driving the arc blocks 307 to retract synchronously into the bag cage 200. As all the arc blocks 307 retract, the filter bag 100 loses its S-shaped support and quickly straightens into a straight line, generating violent overall shaking, which causes the surface dust layer to fall off due to inertia.

[0057] At the same time, the pulsed airflow reaches the bottom of the filter bag 100, and the air pressure acts on the lower surface of the metal disc 401, generating an upward thrust. This thrust is greater than the sum of the gravity and magnetic repulsion force on the metal disc 401. The metal disc 401 moves rapidly upward along the inner wall of the guide frame 404 and hits the inner wall of the bottom of the bag cage 200, generating high-frequency mechanical vibration, which is specifically used to remove the caking or high-density dust deposited at the bottom of the filter bag 100.

[0058] Dust removal and reset phase:

[0059] After the pulse airflow ends, the internal pressure of the filter bag 100 returns to normal pressure, the compression spring releases its stored energy, pushes the inner rod 305 to reset, and the arc block 307 extends out of the hollow groove again, once again stretching the filter bag 100 into an S-shape; the metal disc 401 falls back to its original position above the fixed seat 402 under the action of gravity and magnetic repulsion, waiting for the next dust removal command.

[0060] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0061] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An antistatic composite filter bag structure, comprising a filter bag, characterized in that: The filter bag is prefabricated into an S-shape, and a bag cage is provided inside the filter bag. Multiple sets of control components are arranged inside the bag cage from top to bottom, and a collision component is provided below the multiple sets of control components. The control component includes an arc-shaped block for supporting the filter bag, and the collision component includes a metal disc for generating vibration. When the filter bag performs filtration, the elastic arc-shaped blocks arranged alternately on the bag cage naturally extend, keeping the filter bag in an S-shaped configuration; at the same time, the metal disc in the collision assembly remains stationary under the combined action of magnetic attraction and gravity. After the pulse cleaning is started, the high-pressure airflow rushes in instantly, on the one hand pushing each arc block to retract synchronously into the inside of the bag cage, so that the filter bag quickly changes from an S-shape to a straight shape; on the other hand, the air pressure drives the metal disc to overcome magnetic force and gravity, move upward along the axis and hit the bottom of the bag cage. The multiple sets of control components include an upper left positioning block and a lower right positioning block located inside the bag cage. The upper left positioning block is located above the lower right positioning block, and slide rails are fixedly connected to both ends of the upper left positioning block and the lower right positioning block. An outer rod is fixedly connected inside the slide rail, and a compression spring is fixedly connected inside the outer rod. One end of the compression spring is fixedly connected to an inner rod, and the inner rod slides inside the outer rod through the compression spring. The components in the multiple sets of control components are arranged alternately up and down, supporting the filter bag in an S-shape. The upper left positioning block and the lower right positioning block are both provided with positioning holes for positioning.

2. The antistatic composite filter bag structure according to claim 1, characterized in that: One end of the inner rod is fixedly connected to a connecting block, and one end of the connecting block is fixedly connected to an arc-shaped block. A protective film for the filter bag is affixed to the side of the arc-shaped block near the filter bag.

3. The antistatic composite filter bag structure according to claim 2, characterized in that: The collision assembly includes a mounting base located below a metal disk, both of which contain permanent magnets.

4. The antistatic composite filter bag structure according to claim 3, characterized in that: The fixed base is fixedly connected to the guide frame in a circumferential array, and the metal disk and the permanent magnet inside the metal disk are slidably connected to the guide frame.

5. The antistatic composite filter bag structure according to claim 4, characterized in that: The permanent magnets inside the metal disk and the fixed base are of the same pole and generate a repulsive force between them.

6. The antistatic composite filter bag structure according to claim 5, characterized in that: A fixing rod is fixedly connected to the axis of the bag cage, and the fixing rod is adapted to the positioning holes on the upper left positioning block and the lower right positioning block.

7. The antistatic composite filter bag structure according to claim 6, characterized in that: The top of the fixing rod is bolted with a top cover for fixing the filter bag. The bottom of the bag cage is fixedly connected to the top of the guide frame. The bag cage has multiple hollow grooves that are adapted to the arc-shaped block to cooperate with the contraction movement of the arc-shaped block.

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