Bag-type dust collector with top-mounted self-centering filter bag mounting structure

Abstract

The invention relates to the technical field of bag-type dust removers, in particular to a bag-type dust remover with a top-mounted self-centering filter bag mounting structure, which comprises a mounting plate, a top-mounted filter bag mounting plate and a top-mounted self-centering filter bag mounting plate, and through holes are formed in the mounting plate in a matrix manner; a supporting ring is connected to an opening in the top end of the filter bag, a filter bag frame is inserted into the filter bag, a mounting ring table is fixedly connected to the bottom of the mounting plate through bolts, and a rotating ring and a limiting lantern ring are movably arranged on the mounting ring table; the L-shaped clamping plates annularly distributed in the mounting ring table synchronously move and are attached to the inner wall of the top ring of the filter bag frame, accurate centering of the filter bag can be achieved without manual alignment, rapid clamping and unlocking of the filter bag are achieved through cooperation of the rotating ring, the guide plate and the L-shaped clamping plates, the filter bag does not need to be lifted for a long time in the whole process, operation is easy and rapid, and the efficiency is high. The problems of tedious mounting and dismounting and high labor intensity in the prior art are effectively solved; and the sealing air ring is tightly clamped into the sealing concave ring groove after being inflated, so that a double-sealing structure is formed.

Description

Technical Field

[0001] This invention relates to the technical field of baghouse dust collectors, specifically a top-mounted self-aligning filter bag installation structure for a baghouse dust collector. Background Technology

[0002] Baghouse dust collectors, as highly efficient gas-solid separation equipment, are widely used in flue gas purification and dust recovery processes in various industries such as power, metallurgy, chemical, building materials, and mining due to their advantages of high filtration accuracy, wide adaptability to dust concentration range, and stable operation. Their core working principle utilizes the filtration effect of filter bags to trap dust particles in the dust-laden gas on the surface of the filter bags, while the purified gas is discharged through the filter bags, thus achieving separation of dust and gas. As the core filtration element of a baghouse dust collector, the installation quality of the filter bag directly affects the dust collector's filtration efficiency, operating resistance, service life, and maintenance costs. Currently, the filter bag installation methods for baghouse dust collectors on the market are mainly divided into three types: top-mounted, side-mounted, and bottom-mounted. Among them, top-mounted installation is particularly widely used in large-scale industrial dust collection equipment due to its advantages such as large maintenance space, no need to enter the dust collector housing during installation and maintenance, and minimal interference with production operations. A baghouse dust collector, as disclosed in Chinese patent document CN221471219U, includes a fixedly connected dust collector body and ash hopper, and separate dust collection filter bags and filter cartridges. The dust collection filter bags are fitted over the outside of the filter cartridges. The dust collector body has an mounting plate, the bottom surface of which has a fixing cylinder. The bottom end of the fixing cylinder has a fixing circular plate, and the center of the bottom surface of the fixing circular plate has a positioning cylinder. The top of the filter cartridge has a separate clamping cover plate, and the top surface of the clamping cover plate has a first mounting ring. The clamping cover plate clamps the top edge of the dust collection filter bag with the filter cartridge. The method of fixing the dust collection filter bag is simple: the filter cartridge is rotated to remove the clamping cover plate from the fixing circular plate, and then the clamping cover plate is rotated and removed again, facilitating the replacement of the dust collection filter bag. A tapping rod is used to strike the stabilizing plate, causing vibration of the filter cartridge and the dust collection filter bag on its outside, causing residual dust on the dust collection filter bag to fall off. The dust collection filter bag is then cleaned before replacement.

[0003] However, in the above-mentioned solutions and existing technologies, when installing the top-mounted filter bags in existing baghouse dust collectors, it is necessary to manually insert the filter bag frame into the filter bag first, then manually align the filter bag with the through hole on the mounting plate on the inner wall of the dust collector, and then work together to clamp and fix the upper opening of the filter bag with the through hole of the mounting plate. Disassembly requires the reverse operation. For large dust collectors, there are many filter bags and the weight of each filter bag is large. When manually aligning and inserting the filter bags, it is necessary to lift and hold the filter bags for a long time. The installation and disassembly process is cumbersome and labor-intensive. Summary of the Invention

[0004] The purpose of this invention is to provide a bag filter dust collector with a top-mounted self-centering filter bag installation structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bag filter dust collector with a top-mounted self-aligning filter bag installation structure, comprising: Mounting plate, wherein through holes are provided in a matrix on the mounting plate; The filter bag has a support ring connected to its top opening, a filter bag frame inserted inside the filter bag, and positioning grooves symmetrically opened at the top of the support ring, with threaded holes opened at the bottom wall of the positioning groove. The mounting ring is fixedly connected to the bottom of the mounting plate by bolts. The mounting ring is positioned corresponding to the through hole. The inner wall of the mounting ring is connected to the through hole. A rotating ring and a limiting ring are movably mounted on the mounting ring. A sealing gas ring is provided inside the limiting ring. A convex square tube is connected to the peripheral wall of the limiting ring.

[0006] Preferably, the filter bag frame consists of a top ring, support columns, and a bottom ring. The top ring and the bottom ring are connected by multiple support columns arranged in a ring. The peripheral wall of the top ring of the filter bag frame fits against the inner wall of the support ring. Positioning plates are symmetrically connected to the peripheral wall of the top ring of the filter bag frame. The positioning plates are inserted into the positioning grooves. A first hand-tightening screw is inserted into the end wall of the positioning plate. The first hand-tightening screw is threadedly connected to the threaded hole.

[0007] Preferably, the top of the filter bag frame top ring, support ring and the top of the first hand-tightening screw cap are attached to the bottom wall of the mounting ring platform. Three movable slots are equidistantly arranged in a ring on the inner wall of the mounting ring platform. First sliding grooves are symmetrically arranged on the two side walls of the movable slots. An L-shaped card plate is movably engaged in the movable slot. First sliders are symmetrically connected to the two side walls of the L-shaped card plate. The first sliders are movably engaged in the first sliding grooves.

[0008] Preferably, the bottom protrusion of the L-shaped card plate extends out of the bottom of the mounting ring platform, a spring is connected to the inner side wall of the L-shaped card plate, the other end of the spring is connected to the end wall of the movable card groove, a retaining ring groove is opened on the inner wall of the top ring of the filter bag frame, the bottom protrusion of the L-shaped card plate is engaged in the retaining ring groove, and the inner side wall of the L-shaped card plate fits against the inner wall of the top ring of the filter bag frame.

[0009] Preferably, the mounting ring platform has three equidistant circular slots, and a guide post is connected to the top of the L-shaped card plate. The guide post is located in the circular slot. A rotating ring is rotatably arranged on the peripheral wall of the mounting ring platform, and three guide plates are equidistantly connected in a ring on the inner wall of the rotating ring.

[0010] Preferably, the guide plate is movably engaged in a movable groove, the guide plate is obliquely positioned, a guide groove is formed on the side wall of the guide plate, the guide column is movably engaged in a guide groove, L-shaped levers are symmetrically connected to the circumferential wall of the rotating ring, and a limiting collar is movably engaged in a mounting ring on the circumferential wall of the mounting ring platform.

[0011] Preferably, the limiting collar is sleeved and connected to the support ring. A second sliding groove is symmetrically opened on the peripheral wall of the mounting ring platform. A second slider is symmetrically connected on the inner wall of the limiting collar. The second slider is movably engaged in the second sliding groove. Two horizontal slots are equidistantly opened in a ring on the side wall of the limiting collar. A vertical slot is opened on one end of the side wall of the horizontal slot. An L-shaped lever is movably engaged in the horizontal slot and slidably engaged in the vertical slot.

[0012] Preferably, the inner wall of the limiting collar is provided with an embedded ring groove, and a sealing gas ring is snapped into the embedded ring groove. The sealing gas ring is annular, and an air storage column is connected to the side wall of the sealing gas ring. A sealing concave ring groove is provided on the peripheral wall of the support ring, and the sealing gas ring is snapped into the sealing concave ring groove when it is inflated.

[0013] Preferably, the gas storage column is inserted into the inner wall of the convex square tube through the limiting collar, and a second hand-tightening screw is threadedly connected to the end wall of the convex square tube, and a push plate is connected to the end of the second hand-tightening screw.

[0014] Preferably, the push plate is circular and is movably engaged in the inner wall of the convex square tube. The end of the push plate is pressed against the end of the gas storage column. A limit plate is rotatably connected to the cap of the second hand-tightened screw. A limit groove is opened on the top wall of the square tube. The bottom end of the limit plate is movably engaged in the limit groove. The top wall of the limit plate is attached to the bottom wall of the L-shaped push plate.

[0015] Compared with the prior art, this application has the following beneficial effects: By synchronously moving and fitting the L-shaped clamps distributed in a ring within the installation platform to the inner wall of the top ring of the filter bag frame, the filter bag can be accurately aligned without manual alignment. Through the cooperation of the rotating ring, guide plate and L-shaped clamps, the filter bag can be quickly latched and unlocked. When disassembling, simply rotate the rotating ring in the opposite direction to unlock the L-shaped clamps. The whole process does not require lifting and handling the filter bag for a long time. The operation is simple and quick, effectively solving the problems of cumbersome installation and disassembly and high labor intensity in the existing technology. By incorporating a sealing ring, an air storage bladder, and a sealing groove, the second hand-tightening screw pushes the push plate to compress the air storage bladder, causing the sealing ring to inflate and tightly engage with the sealing groove, forming a double-sealing structure. This effectively prevents dust-laden gas from escaping through the gap between the filter bag and the installation structure, thus improving the dust collector's purification effect. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the bottom view of the structure of the present invention; Figure 3 This is a schematic half-sectional view of the structure of the present invention; Figure 4 This is a half-sectional schematic diagram of the filter bag structure of the present invention; Figure 5 This is a schematic diagram of the connection of the mounting ring structure of the present invention; Figure 6 This is a bottom view of the mounting ring structure connection of the present invention; Figure 7 This is a half-sectional view of the mounting ring structure connection of the present invention; Figure 8 This is a schematic diagram of the L-shaped card plate structure of the present invention; Figure 9 This is a schematic diagram of the connection of the limiting collar structure of the present invention; Figure 10 This is a half-sectional view of the limiting collar structure connection of the present invention.

[0017] In the diagram: Mounting plate 1, through hole 101, filter bag 2, support ring 201, filter bag frame 202, positioning groove 203, threaded hole 204, positioning plate 205, first hand-tightening screw 206, retaining ring groove 207, sealing concave ring groove 208, mounting ring platform 3, movable retaining groove 301, first sliding groove 302, L-shaped retaining plate 303, first slider 304, spring 305, guide post 306, movable groove 307, second sliding groove 308, rotating ring 4, guide plate 401, guide groove 402, L-shaped lever plate 403, limiting collar 5, second slider 501, horizontal retaining groove 502, vertical retaining groove 503, embedded ring groove 504, sealing gas ring 6, air storage column 601, convex square tube 7, second hand-tightening screw 701, push plate 702, limiting plate 703, limiting groove 704. Detailed Implementation

[0018] The technical solutions of the embodiments 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, and 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.

[0019] Please see Figure 1-10 This invention provides a technical solution: a bag filter dust collector with a top-mounted self-aligning filter bag installation structure, comprising: Mounting plate 1, wherein through holes 101 are provided in a matrix on the mounting plate 1; The filter bag 2 has a support ring 201 connected to the top opening of the filter bag 2, and a filter bag frame 202 is inserted into the filter bag 2. The top of the support ring 201 has symmetrically opened positioning grooves 203, and the bottom wall of the positioning groove 203 has threaded holes 204. The mounting ring platform 3 is fixedly connected to the bottom of the mounting plate 1 by bolts. The mounting ring platform 3 is positioned corresponding to the through hole 101. The inner wall of the mounting ring platform 3 is connected to the through hole 101. A rotating ring 4 and a limiting sleeve 5 are movably mounted on the mounting ring platform 3. A sealing gas ring 6 is provided inside the limiting sleeve 5. A convex square tube 7 is connected to the peripheral wall of the limiting sleeve 5.

[0020] Mounting plate 1 is connected and installed on the inner wall of the bag filter. Mounting plate 1 has a matrix of through holes 101. Mounting plate 1 is used to fix the mounting ring 3 and provide an installation reference for the filter bags 2. The matrix of through holes 101 can accommodate the installation needs of multiple filter bags 2, meeting the filtration area requirements of large dust collectors. A support ring 201 is connected to the top opening of the filter bag 2. The support ring 201 supports the top opening structure of the filter bag 2, ensuring the stability of the filter bag 2 after installation. A filter bag frame 202 is inserted into the filter bag 2. 2 is used to support the filter bag 2 as a whole, so as to prevent the filter bag 2 from collapsing under the action of the filtering airflow; the top of the support ring 201 is symmetrically provided with positioning grooves 203, and the bottom wall of the positioning groove 203 is provided with threaded holes 204. The positioning grooves 203 are used to realize the precise positioning connection between the filter bag frame 202 and the support ring 201. The mounting ring platform 3 is positioned corresponding to the through hole 101. The inner wall of the mounting ring platform 3 is connected to the through hole 101. The mounting ring platform 3 provides a transition connection structure for the installation of the filter bag 2, and at the same time provides an installation carrier for components such as the rotating ring 4 and the limiting collar 5.

[0021] The filter bag frame 202 consists of a top ring, support columns, and a bottom ring. The top ring and bottom ring are connected by multiple support columns arranged in a ring. The peripheral wall of the top ring of the filter bag frame 202 is attached to the inner wall of the support ring 201. Positioning plates 205 are symmetrically connected to the peripheral wall of the top ring of the filter bag frame 202. The positioning plates 205 are inserted into the positioning grooves 203. A first hand-tightening screw 206 is inserted into the end wall of the positioning plate 205. The first hand-tightening screw 206 is threadedly connected to the threaded hole 204.

[0022] The filter bag frame 202 consists of a top ring, support columns, and a bottom ring. The top ring and bottom ring are connected by multiple support columns arranged in a ring shape. This structure can achieve uniform support for the inner wall of the filter bag 2. The peripheral wall of the top ring of the filter bag frame 202 fits against the inner wall of the support ring 201 to ensure the fit between the two. The filter bag frame 202 and the support ring 201 can be detachably fixed by the positioning plate 205 and the positioning groove 203, and then by the threaded connection of the first hand-tightening screw 206 and the threaded hole 204.

[0023] The top ring of the filter bag frame 202, the support ring 201, and the top cap of the first hand-tightening screw 206 are attached to the bottom wall of the mounting ring platform 3. Three movable slots 301 are equidistantly arranged in a ring on the inner wall of the mounting ring platform 3. First sliding grooves 302 are symmetrically arranged on the two side walls of the movable slots 301. An L-shaped card plate 303 is movably engaged in the movable slots 301. First sliders 304 are symmetrically connected to the two side walls of the L-shaped card plate 303. The first sliders 304 are movably engaged in the first sliding grooves 302.

[0024] The first slider 304 is movably engaged within the first slide groove 302. The movable slot 301 provides movement space for the L-shaped plate 303. The cooperation between the first slider 304 and the first slide groove 302 ensures the smoothness and guidance of the movement of the L-shaped plate 303.

[0025] The bottom protrusion of the L-shaped card plate 303 extends out of the bottom of the mounting ring 3. A spring 305 is connected to the inner wall of the L-shaped card plate 303. The other end of the spring 305 is connected to the end wall of the movable card groove 301. A retaining ring groove 207 is opened on the inner wall of the top ring of the filter bag frame 202. The bottom protrusion of the L-shaped card plate 303 is engaged in the retaining ring groove 207. The inner wall of the L-shaped card plate 303 fits against the inner wall of the top ring of the filter bag frame 202.

[0026] When the spring 305 is in a compressed state, the spring 305 resets and pushes the L-shaped clamping plate 303 to move towards the center of the mounting ring platform 3; the bottom protrusion of the L-shaped clamping plate 303 engages in the clamping ring groove 207, realizing the initial clamping and positioning of the filter bag 2 and the mounting ring platform 3. At the same time, the inner side wall of the L-shaped clamping plate 303 is attached to the inner wall of the top ring of the filter bag frame 202, which can realize the automatic centering of the filter bag 2.

[0027] The mounting ring platform 3 has three equidistant circular slots 307. The top of the L-shaped card plate 303 is connected to a guide post 306, which is located in the circular slots 307. A rotating ring 4 is rotatably arranged on the periphery of the mounting ring platform 3. Three guide plates 401 are equidistantly connected in a ring on the inner wall of the rotating ring 4.

[0028] The guide plate 401 is movably engaged in the movable groove 307. The guide plate 401 is obliquely arranged. The guide groove 402 is opened on the side wall of the guide plate 401. The guide post 306 is movably engaged in the guide groove 402. The L-shaped lever plate 403 is symmetrically connected to the circumferential wall of the rotating ring 4. The limiting collar 5 is movably engaged in the circumferential wall of the mounting ring platform 3.

[0029] The movable groove 307 provides space for the guide post 306 and the guide plate 401 to move. The rotation of the rotating ring 4 can drive the guide plate 401 to rotate synchronously. When the guide plate 401 rotates, the guide post 306 can be pushed by the obliquely set guide groove 402 to move the L-shaped clamping plate 303 along the first sliding groove 302, so as to realize the extension and retraction of the L-shaped clamping plate 303. The L-shaped lever plate 403 is used to drive the rotating ring 4 to rotate, and can also cooperate with the limiting collar 5 to realize the positioning of the rotating ring 4.

[0030] The limiting collar 5 is sleeved and connected to the support ring 201. The mounting ring platform 3 has symmetrically opened second sliding grooves 308 on its peripheral wall. The limiting collar 5 has symmetrically connected second sliders 501 on its inner wall. The second sliders 501 are movably engaged in the second sliding grooves 308. The limiting collar 5 has two horizontal slots 502 equidistantly opened in a ring on its side wall. One end of the horizontal slot 502 has a vertical slot 503. The L-shaped lever 403 is movably engaged in the horizontal slot 502 and slidably engaged in the vertical slot 503.

[0031] The cooperation between the second slider 501 and the second slide groove 308 can ensure that the limiting collar 5 moves smoothly along the axial direction of the mounting ring platform 3; the horizontal slot 502 is used for the horizontal sliding of the L-shaped dial plate 403, and the vertical slot 503 is used to limit the L-shaped dial plate 403 axially, thereby fixing the rotating ring 4 and preventing it from rotating on its own.

[0032] The inner wall of the limiting collar 5 is provided with an embedded ring groove 504, and a sealing gas ring 6 is snapped into the embedded ring groove 504. The sealing gas ring 6 is annular, and an air storage column 601 is connected to the side wall of the sealing gas ring 6. A sealing concave ring groove 208 is provided on the peripheral wall of the support ring 201. When the sealing gas ring 6 is inflated, it is snapped into the sealing concave ring groove 208.

[0033] The embedded ring groove 504 is used to fix the sealing ring 6, and the gas storage bladder 601 is used to provide gas to the sealing ring 6. After the sealing ring 6 is inflated, it is inserted into the sealing concave ring groove 208, which can achieve a tight seal between the filter bag 2 and the limiting collar 5, and improve the overall sealing performance.

[0034] The gas storage column 601 is inserted into the inner wall of the convex square tube 7 through the limiting collar 5. The end wall of the convex square tube 7 is threaded with a second hand-tightening screw 701, and the end of the second hand-tightening screw 701 is connected with a push plate 702.

[0035] The push plate 702 is circular and is movably snapped into the inner wall of the convex square tube 7. The end of the push plate 702 is pressed against the end of the gas storage column 601. A limit plate 703 is rotatably connected to the cap of the second hand-tightened screw 701. A limit groove 704 is opened on the top wall of the square tube 7. The bottom end of the limit plate 703 is movably snapped into the limit groove 704. The top wall of the limit plate 703 is attached to the bottom wall of the L-shaped lever plate 403.

[0036] Rotating the second hand-tightening screw 701 pushes the push plate 702 to move along the inner wall of the convex square tube 7, thereby squeezing the air storage column 601 and inflating the sealing gas ring 6. The cooperation between the limiting plate 703 and the limiting groove 704 allows the limiting plate 703 to move linearly as the second hand-tightening screw 701 rotates. The top wall of the limiting plate 703 is attached to the bottom wall of the L-shaped lever plate 403, fixing the position of the limiting collar 5.

[0037] Working principle: First, insert the filter bag frame 202 into the filter bag 2, so that the peripheral wall of the top ring of the filter bag frame 202 fits against the inner wall of the support ring 201. At the same time, align the positioning plate 205 on the filter bag frame 202 with the positioning groove 203 on the support ring 201, and tighten the first hand-tightening screw 206 so that the first hand-tightening screw 206 is threadedly connected to the threaded hole 204 on the bottom wall of the positioning groove 203, thus completing the pre-installation and fixation of the filter bag frame 202 and the filter bag 2. Align the pre-installed filter bag 2 with the mounting ring platform 3 from below the mounting plate 1, and push the filter bag 2 upward so that the top ring of the filter bag frame 202, the support ring 201, and the top of the cap of the first hand-tightening screw 206 fit together for installation. The bottom wall of the mounting ring 3; the L-shaped lever 403 on the rotating ring 4 is moved, causing the rotating ring 4 to rotate along the circumference of the mounting ring 3. The guide plate 401 on the inner wall of the rotating ring 4 rotates synchronously in the movable groove 307. Since the guide plate 401 is set at an angle, the guide groove 402 on its side wall cooperates with the guide post 306 at the top of the L-shaped clamping plate 303, pushing the guide post 306 to move the L-shaped clamping plate 303 towards the outer wall of the mounting ring 3 and compress the spring 305. During the rotation of the rotating ring 4, the L-shaped lever 403 slides along the horizontal clamping groove 502 until the L-shaped lever 403 moves and is clamped into the vertical clamping groove 503 at the end of the horizontal clamping groove 502. At this time, the L-shaped lever... Plate 403 separates from the top wall of the horizontal slot 502, no longer supporting the limiting collar 5, meaning the limiting collar 5 is unlocked and can move downwards. At this time, the L-shaped clamping plate 303 is tightly fitted with the inner wall of the top ring of the filter bag frame 202, achieving automatic centering of the filter bag 2. Simultaneously, the bottom protrusion of the L-shaped clamping plate 303 engages in the retaining groove 207 of the top ring of the filter bag frame 202, completing the initial engagement and positioning of the filter bag 2 and the mounting ring 3. Then, the limiting collar 5 moves downwards until the second slider 501 moves to the bottom of the second slide groove 308, and the L-shaped lever 403 engages in the top of the vertical slot 503, achieving axial positioning of the rotating ring 4. At this time, the limiting collar 5 and the support ring 201... The connection is made by rotating the second hand-tightening screw 701 on the convex square tube 7, which drives the push plate 702 to move along the inner wall of the convex square tube 7. The push plate 702 squeezes the gas storage bladder 601, allowing the gas in the gas storage bladder 601 to enter the sealing gas ring 6. After the sealing gas ring 6 is inflated, it is inserted into the sealing groove 208 on the circumferential wall of the support ring 201, thus completing the seal between the filter bag 2 and the limiting collar 5. At the same time, the limiting plate 703 moves along the limiting groove 704 as the end cap of the second hand-tightening screw 701 is adjusted, until the top wall of the limiting plate 703 is attached to the bottom wall of the L-shaped lever plate 403, thus achieving dual position fixation of the rotating ring 4 and the limiting collar 5, and completing the overall installation of the filter bag 2.

[0038] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure, comprising: Mounting plate (1), the mounting plate (1) has through holes (101) in a matrix. The filter bag (2) has a support ring (201) connected to the top opening of the filter bag (2), and a filter bag frame (202) is inserted into the filter bag (2). The top of the support ring (201) is symmetrically provided with positioning grooves (203), and the bottom wall of the positioning groove (203) is provided with threaded holes (204). The mounting ring platform (3) is fixedly connected to the bottom of the mounting plate (1) by bolts. The mounting ring platform (3) is positioned corresponding to the through hole (101). The inner wall of the mounting ring platform (3) is connected to the through hole (101). A rotating ring (4) and a limiting sleeve (5) are movably arranged on the mounting ring platform (3). A sealing gas ring (6) is arranged inside the limiting sleeve (5). A convex square tube (7) is connected to the peripheral wall of the limiting sleeve (5).

2. The baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 1, characterized in that: The filter bag frame (202) consists of a top ring, a support column and a bottom ring. The top ring and the bottom ring are connected by a plurality of support columns arranged in a ring. The peripheral wall of the top ring of the filter bag frame (202) is attached to the inner wall of the support ring (201). A positioning plate (205) is symmetrically connected on the peripheral wall of the top ring of the filter bag frame (202). The positioning plate (205) is inserted into the positioning groove (203). A first hand-tightening screw (206) is inserted into the end wall of the positioning plate (205). The first hand-tightening screw (206) is threadedly connected to the threaded hole (204).

3. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 2, characterized in that: The top ring of the filter bag frame (202), the support ring (201) and the top cap of the first hand-tightening screw (206) are attached to the bottom wall of the mounting ring platform (3). Three movable slots (301) are equidistantly arranged in a ring on the inner wall of the mounting ring platform (3). The first sliding groove (302) is symmetrically arranged on the two side walls of the movable slots (301). An L-shaped card plate (303) is movably engaged in the movable slots (301). The first slider (304) is symmetrically connected on the two side walls of the L-shaped card plate (303). The first slider (304) is movably engaged in the first sliding groove (302).

4. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 3, characterized in that: The bottom boss of the L-shaped card plate (303) extends out of the bottom of the mounting ring platform (3). A spring (305) is connected to the inner wall of the L-shaped card plate (303). The other end of the spring (305) is connected to the end wall of the movable card groove (301). A retaining ring groove (207) is opened on the inner wall of the top ring of the filter bag frame (202). The bottom boss of the L-shaped card plate (303) is engaged in the retaining ring groove (207). The inner wall of the L-shaped card plate (303) fits against the inner wall of the top ring of the filter bag frame (202).

5. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 4, characterized in that: The mounting ring platform (3) has three movable slots (307) that are equidistantly arranged in a ring. The top of the L-shaped card plate (303) is connected to a guide post (306). The guide post (306) is located in the movable slot (307). A rotating ring (4) is rotatably arranged on the periphery of the mounting ring platform (3). Three guide plates (401) are equidistantly arranged in a ring on the inner wall of the rotating ring (4).

6. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 5, characterized in that: The guide plate (401) is movably engaged in the movable groove (307). The guide plate (401) is obliquely arranged. The guide groove (402) is opened on the side wall of the guide plate (401). The guide column (306) is movably engaged in the guide groove (402). The rotating ring (4) is symmetrically connected with L-shaped levers (403). The limiting collar (5) is movably engaged in the peripheral wall of the mounting ring platform (3).

7. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 6, characterized in that: The limiting collar (5) is sleeved and connected to the support ring (201). The mounting ring (3) is symmetrically provided with a second sliding groove (308) on its peripheral wall. The limiting collar (5) is symmetrically connected with a second slider (501) on its inner wall. The second slider (501) is movably engaged in the second sliding groove (308). The limiting collar (5) has two horizontal slots (502) equidistantly arranged in a ring on its side wall. A vertical slot (503) is provided on one side wall of the horizontal slot (502). The L-shaped lever (403) is movably engaged in the horizontal slot (502). The L-shaped lever (403) is slidably engaged in the vertical slot (503).

8. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 7, characterized in that: The inner wall of the limiting collar (5) is provided with a ring groove (504), and a sealing gas ring (6) is snapped into the ring groove (504). The sealing gas ring (6) is arranged in a ring shape, and a gas storage column (601) is connected to the side wall of the sealing gas ring (6). A sealing concave ring groove (208) is provided on the peripheral wall of the support ring (201). The sealing gas ring (6) is snapped into the sealing concave ring groove (208) when it is inflated.

9. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 8, characterized in that: The gas storage column (601) is inserted into the inner wall of the convex square tube (7) through the limiting collar (5). The end wall of the convex square tube (7) is threaded with a second hand-tightening screw (701), and the end of the second hand-tightening screw (701) is connected with a push plate (702).

10. A baghouse dust collector with a top-mounted self-aligning filter bag installation structure according to claim 9, characterized in that: The push plate (702) is circular and is movably snapped into the inner wall of the convex square tube (7). The end of the push plate (702) is pressed against the end of the gas storage column (601). A limit plate (703) is rotatably connected to the cap of the second hand-tightened screw (701). A limit groove (704) is opened on the top wall of the square tube (7). The bottom end of the limit plate (703) is movably snapped into the limit groove (704). The top wall of the limit plate (703) is attached to the bottom wall of the L-shaped lever (403).

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