Modular assembly structure of a baghouse

Abstract

The application relates to the technical field of dust collectors, and discloses a box modular assembly structure of a bag-type dust collector, which comprises a frame body enclosed by a cross beam and a vertical beam (end detachable connection), the inside of the frame body is provided with a profiled steel plate, and the profiled steel plate is limitedly fixed through quick-release fixing devices (C-shaped buckle fixing devices); the core of the C-shaped buckle fixing device is a C-shaped sleeve, which is composed of two parallel side plates and a connecting plate: one side plate extends axially, the other side plate is bent to form an L-shaped support, and a movable joint is formed between the two for the cross beam / vertical beam to enter and exit; the axially-extending side plate is provided with a fastening bolt, and the movable joint is constrained through the thread; the movable joint extends inward to form a C-shaped buckle groove for the side edge of the profiled steel plate to be embedded; through cooperation of the movable joint and the fastening bolt, the design realizes quick disassembly and assembly without opening, and the efficiency of the modular assembly is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of dust collector technology, and more specifically to a modular assembly structure for the housing of a bag filter dust collector. Background Technology

[0002] Baghouse dust collectors, as the most widely used dry dust removal technology in my country, have been extensively applied in flue gas treatment systems in industries such as steel, metallurgy, chemicals, and power plants. This technology boasts significant advantages such as high dust removal efficiency, wide applicability, simple operation, and convenient maintenance, gaining widespread recognition from owners. However, with the continuous expansion of baghouse dust collector applications, some problems have gradually emerged in engineering practice. These mainly include long equipment installation cycles, limited temperature resistance of filter bag materials, and inefficient operation of pneumatic ash conveying systems. Particularly noteworthy is the large workload and long construction period involved in welding the wall panels during on-site installation, which prolongs the flue gas connection time and consequently affects the owner's normal production order.

[0003] To reduce on-site welding work and shorten the installation period, several modular designs have been attempted in the prior art. For example, Chinese Utility Model Patent Publication No. CN214551861U discloses a modular dust collector housing. The housing has a rectangular structure with an open top and bottom. Its length is composed of multiple first housing modules connected by bolts, while a second housing module is set in the width direction, which is also connected to the first housing modules by bolts. Both the first and second housing modules use corrugated sheets to form the wall panels. This design aims to achieve modular assembly of the housing through factory prefabrication and on-site assembly, thereby improving manufacturing accuracy and reducing on-site welding processes.

[0004] However, this type of modular structure still has drawbacks in practical applications: the connection between wall panels, between beam components, or between wall panels and beams relies on bolts. This connection method has strict requirements for processing and assembly precision, resulting in long assembly time and increased labor costs. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by this application is: how to provide a modular structure for bag dust collectors that is easy to install on site, reduces the accuracy requirements of inter-module connections, and reduces the amount of assembly work.

[0006] The present invention provides the following technical solution: a modular assembly structure for a bag filter housing, comprising a frame body, the frame body being enclosed by a crossbeam and a vertical beam detachably connected to its ends, a profiled steel sheet being placed inside the frame body, and a quick-release fixing device for limiting and fixing the profiled steel sheet being coupled to the frame body.

[0007] Furthermore, the quick-release fixing device is a C-type snap-fit ​​fixing device. The C-type snap-fit ​​fixing device includes a C-type sleeve that can be fitted onto the surface of a horizontal or vertical beam. The C-type sleeve consists of two parallel side plates and a connecting plate between them. One side plate extends axially, and the other side plate is bent inward to form an L-shaped support, creating a hinge for the horizontal or vertical beam to enter or exit. A fastening bolt is threaded onto the axially extending side plate of the C-type sleeve to restrain the hinge. The hinge extends into the C-type sleeve to form a C-type groove, used for the horizontal or vertical beam to embed into the side of the profiled steel sheet.

[0008] Furthermore, the C-type sleeve includes an adjustable side plate and an opposing side plate. The adjacent ends of the adjustable side plate and the opposing side plate are respectively provided with grooves and matching protrusions. The protrusions are inserted into the grooves and are hinged by a movable through-hole pivot.

[0009] Furthermore, the adjustable side plate includes an outer adjusting plate, an inner adjusting plate located inside the outer adjusting plate and away from the opening, a spacing adjusting mechanism assembled between the outer adjusting plate and the inner adjusting plate for adjusting the spacing, and a driving part disposed on the outer side of the outer adjusting plate to provide driving force for the spacing adjusting mechanism.

[0010] Furthermore, the spacing adjustment mechanism includes an extension plate, which is integrally formed by a pull-out plate and a grid plug; the inner adjustment plate has a cavity for the grid plug to move inside, and its end has an opening through which the pull-out plate passes, and the end of the pull-out plate is rigidly connected to the outer adjustment plate.

[0011] Furthermore, the spacing adjustment mechanism also includes two parallel threaded drive rods, which pass through the grid plug of the expansion plate through threads and are rotatably installed in a pre-set channel on the side of the inner adjustment plate; the channel is connected to the cavity of the inner adjustment plate; the spacing adjustment mechanism also includes a rotating connecting rod that passes through the outer adjustment plate and is rotatably connected to it, the rotating connecting rod is slidably sleeved in the threaded drive rod, and the contact part of the two is provided with a mutually coupled convex and concave structure.

[0012] Furthermore, the drive unit includes a pulley fixed to the end of the rotating connecting rod, and an operating knob located between the pulley and the fastening bolt and rotatably mounted on the outer wall of the outer adjusting plate. The operating knob and the pulley are coplanar and connected to each other by a synchronous belt drive.

[0013] Furthermore, the outer adjusting plate is equipped with a detachable lubrication assembly, which includes a guide rod coaxially mounted with the operating knob and an applicator mounted at the end. At the same time, a paste storage box is provided on the surface of the outer adjusting plate opposite the fastening bolt. When the operating knob is rotated, it drives the guide rod and the applicator to rotate coaxially, so that the paste storage box and the fastening bolt are located on the rotation path of the applicator. The applicator adheres to the lubricant to complete the application of lubricant to the threaded surface of the fastening bolt.

[0014] Furthermore, the applicator is symmetrically arranged around the operating knob, including a brush plate hinged to the end of the guide rod. The brush surface is set along the rotation trajectory. The outer wall of the brush plate is rigidly connected to the traction rod. At the same time, the end of the guide rod near the brush plate is rigidly connected to a rib plate on the same side as the brush surface and a limiting baffle that intercepts the brush plate. The traction rod and the rib plate are elastically connected by a third spring.

[0015] Furthermore, the quick-release fixing device is a hook-type fixing device, which includes a main body of a hanger that is fastened to the surface of a horizontal or vertical beam. The outer wall of the main body of the hanger is provided with an adjustable hanger that can be raised and lowered, and a lifting drive mechanism that drives the adjustable hanger to move linearly. The upper end of the inner coupling locking connector of the adjustable hanger is connected to the profiled steel plate through assembly bolts.

[0016] The technical effects and advantages of this invention are as follows:

[0017] By employing a frame structure composed of detachable horizontal and vertical beams, and internally placing profiled steel sheets, modular prefabrication of the housing height and rapid on-site assembly are achieved. Compared to traditional welding methods, this significantly reduces on-site welding work and shortens the equipment installation cycle, thereby minimizing the impact on the owner's normal production order. Secondly, by coupling quick-release fixing devices on the frame structure to limit and fix the profiled steel sheets, this structural design cleverly solves the defects of existing modular technologies that rely on bolt connections, resulting in high processing precision requirements and long assembly time. This quick-release mechanism makes the installation and disassembly of profiled steel sheets more convenient, not only simplifying the assembly process and reducing labor costs, but also improving assembly efficiency, while ensuring the stability of the structural connection, providing convenience for the rapid installation and subsequent maintenance of the dust collector. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is an exploded structural diagram of the frame and profiled steel sheet of the present invention.

[0020] Figure 3 This is a schematic diagram of the ferrule-type connecting device of the present invention.

[0021] Figure 4 This is a schematic diagram of the first embodiment of the C-type buckle fixing device of the present invention.

[0022] Figure 5 This is a schematic diagram of the second embodiment of the C-type buckle fixing device of the present invention.

[0023] Figure 6 This is a schematic diagram of the third embodiment of the C-type buckle fixing device of the present invention.

[0024] Figure 7 For the present invention Figure 6 Schematic diagram of the structure and its partial cross-section.

[0025] Figure 8 For the present invention Figure 7 A local portion of the structure and its enlarged schematic diagram.

[0026] Figure 9 This is a schematic diagram of the fourth embodiment of the C-type buckle fixing device of the present invention.

[0027] Figure 10 This is a schematic diagram of the hook-type fixing device of the present invention.

[0028] Figure 11 This is a schematic diagram of the connection structure of the adjusting bracket and the locking connector of the present invention.

[0029] Figure 12 This is a schematic diagram of another embodiment of the adjusting bracket and locking connector of the present invention.

[0030] Figure 13 For the present invention Figure 12 Schematic diagram of the switching mode of the locking connector.

[0031] The attached figures are labeled as follows: 1. Frame body; 11. Horizontal beam; 12. Vertical beam; 2. Compression fitting connection device; 21. Upper fixing plate; 22. Lower fixing sleeve; 23. Limiting plate; 24. Perforation; 3. Corrugated steel sheet; 4. C-type buckle fixing device; 41. C-type sleeve; 411. Adjustable side plate; 4111. Outer adjusting plate; 4112. Inner adjusting plate; 4113. Spacing adjustment mechanism; 41131. Expansion plate; 41132. Threaded drive rod; 41133. Rotating connecting rod; 4114. Drive unit; 41141. Operating knob; 41142. Pulley; 41143. Synchronous belt; 412. Opposing side plate; 413. Rotating shaft; 42. Fastening bolt; 5. Hook 51. Fixing device; 52. Hanger body; 53. Lifting drive mechanism; 54. Lead screw; 55. Limiting rod; 56. Adjustable hanger; 57. Carrier box; 58. Lock; 59. First spring; 50. First pull rod; 51. Locking connector; 52. Lock head; 53. Base; 54. Telescopic longitudinal arm; 54. Cross arm; 54. Second pull rod; 54. Second spring; 55. Adjustable rod; 56. Hanging ring; 57. Assembly bolt; 68. Lubrication assembly; 61. Guide rod; 62. Applicator; 621. Brush plate; 622. Traction rod; 623. Rib plate; 624. Third spring; 625. Limiting baffle; 63. Ointment storage box. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The modular assembly structure of the bag filter housing involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Reference Figures 1 to 2 As shown, the present invention provides a modular assembly structure for a bag filter housing. The modular assembly structure includes a frame 1, which is enclosed by a crossbeam 11 and a vertical beam 12 detachably connected to its end. A profiled steel plate 3 is placed inside the frame 1, and a quick-release fixing device for limiting and fixing the profiled steel plate 3 is coupled on the frame 1.

[0034] Additionally, refer to Figure 3 As shown, the adjacent ends of the crossbeam 11 and the vertical beam 12 are connected by a clamp-type connecting device 2. Each clamp-type connecting device 2 includes two opposing upper fixing plates 21. The lower half of the surface between the upper fixing plates 21 is rigidly connected with symmetrically distributed lower fixing sleeves 22. The end side of the upper fixing plate 21 extends outward to form a limiting plate 23 that is perpendicular to the lower fixing sleeve 22 and at the same height as it. The upper fixing plate 21, the lower fixing sleeve 22 and the limiting plate 23 can be integrally injection molded. The upper half of the surface of the upper fixing plate 21, the surface of the lower fixing sleeve 22 and the surface of the limiting plate 23 are all provided with through holes 24 for fixing bolts to pass through.

[0035] During construction: Insert the end of the crossbeam 11 between the upper fixing plate 21 above the lower fixing sleeve 22, so that the end face of the crossbeam 11 is flush with the end side of the upper fixing plate 21; insert the end of the vertical beam 12 between the lower fixing sleeve 22, so that the end face of the vertical beam 12 is flush with the end side of the lower fixing sleeve 22 and abuts against the crossbeam 11, completing the connection between the adjacent ends of the crossbeam 11 and the vertical beam 12; then fix the connection with matching fixing bolts to achieve rapid installation of the frame body 1; at this time, the corner side of the profiled steel sheet 3 is embedded in the limiting plate 23, and the four corners of the profiled steel sheet 3 can be fixed with matching fixing bolts.

[0036] Reference Figures 4 to 8As shown, this is the first embodiment of the C-type buckle fixing device 4. The quick-release fixing device can be selected as the C-type buckle fixing device 4. The C-type buckle fixing device 4 includes a C-type sleeve 41 that can be sleeved on the surface of the crossbeam 11 or the vertical beam 12. The C-type sleeve 41 consists of two parallel side plates and a connecting plate between them. One side plate extends axially, and the other side plate is bent inward to form an L-shaped support. An opening is formed between the two to allow the crossbeam 11 or the vertical beam 12 to enter and exit. A fastening bolt 42 is threaded on the axially extending side plate of the C-type sleeve 41 to restrain the opening. The opening extends into the C-type sleeve 41 to form a C-type groove for the crossbeam 11 or the vertical beam 12 to be embedded with the side of the profiled steel sheet 3.

[0037] During construction: Insert the horizontal beam 11 or vertical beam 12 into the opening at the end of the C-shaped clamp 41. When fixing the profiled steel sheet 3, insert its side into the C-shaped groove. Press the part that extends into the groove onto the L-shaped support by tightening the fastening bolt 42 to fix the side of the profiled steel sheet 3. No holes need to be drilled, and disassembly and assembly are convenient.

[0038] To accommodate the quick insertion of C-type clamps 41 into horizontal beams 11 or vertical beams 12 of varying thicknesses, the structure of C-type clamps 41 has been optimized (see below). Figure 5 This is a second embodiment of the C-type buckle fixing device 4. The C-type sleeve 41 includes an adjustable side plate 411 and an opposing side plate 412. The adjacent ends of the adjustable side plate 411 and the opposing side plate 412 are respectively provided with grooves and matching protrusions. The protrusions are inserted into the grooves and are hinged by a movable through-hole pivot 413.

[0039] During construction: When it is necessary to fit a thicker horizontal beam 11 or vertical beam 12, a wider opening is required. The operator can hold the adjustable side plate 411 and the opposite side plate 412 with both hands and separate them to the sides. The adjustable side plate 411 and the opposite side plate 412 move away from each other with the pivot 413 as the axis, thereby increasing the opening to accommodate thicker horizontal beams 11 or vertical beams 12 and quickly fit them into the C-type clamp 41, thus expanding the equipment's application scenarios.

[0040] To address the issue that after installing horizontal beams 11 or vertical beams 12 of different thicknesses, the gap between them and the C-type clamp 41 is too large, and the constraint force of the fastening bolts 42 on the profiled steel plate 3 is concentrated at the opening, making it difficult to support the fastening force of the C-type clamp 41 on the horizontal beams 11 or vertical beams 12, a third embodiment is further optimized based on the second embodiment of the C-type clamp fixing device 4 (see below). Figures 6 to 8 The adjustable side plate 411 includes an outer adjusting plate 4111, an inner adjusting plate 4112 located inside the outer adjusting plate 4111 and away from the opening, a spacing adjusting mechanism 4113 assembled between the outer adjusting plate 4111 and the inner adjusting plate 4112 for adjusting the spacing, and a driving part 4114 provided on the outside of the outer adjusting plate 4111 to provide driving force to the spacing adjusting mechanism 4113.

[0041] The spacing adjustment mechanism 4113 includes an extension plate 41131, which is integrally formed by a pull-out plate and a grid plug. The inner adjustment plate 4112 has a cavity for the movement of the grid plug, and its end has an opening through which the pull-out plate passes. The end of the pull-out plate is rigidly connected to the outer adjustment plate 4111. This structure allows the extension plate 41131 to extend outward along the inner adjustment plate 4112, thereby increasing the axial length of the outer adjustment plate 4111 and the inner adjustment plate 4112, and realizing adaptive adjustment of the tightening width of the crossbeam 11 or the vertical beam 12.

[0042] The spacing adjustment mechanism 4113 also includes two parallel threaded drive rods 41132. The threaded drive rods 41132 pass through the grid plug of the expansion plate 41131 through the thread and are rotatably installed in the channel preset on the side of the inner adjustment plate 4112. The channel is connected to the cavity of the inner adjustment plate 4112, so that the rotational force of the threaded drive rods 41132 can be converted into the linear movement force of the expansion plate 41131 gradually pulling out the inner adjustment plate 4112.

[0043] The spacing adjustment mechanism 4113 also includes a rotating connecting rod 41133 that passes through and is rotatably connected to the outer adjusting plate 4111. The rotating connecting rod 41133 is slidably sleeved inside the threaded drive rod 41132. The contact part of the two is provided with a mutually coupled convex and concave structure, so that the rotating connecting rod 41133 can still drive the threaded drive rod 41132 to rotate when it is pulled outward, thereby adapting to the expansion plate 41131 driving the outer adjusting plate 4111, the rotating connecting rod 41133 and the drive part 4114 to move outward synchronously, so as to realize the adjustment of the axial length of the outer adjusting plate 4111 and the inner adjusting plate 4112.

[0044] The drive unit 4114 includes a pulley 41142 fixed to the end of the rotating connecting rod 41133, and an operating knob 41141 located between the pulley 41142 and the fastening bolt 42 and rotatably mounted on the outer wall of the outer adjusting plate 4111. The operating knob 41141 and the pulley 41142 are coplanar and are connected to each other by a synchronous belt 41143. This provides driving force for the retraction and extension of the spacing adjustment mechanism 4113. A protective shell can be installed on the outer adjusting plate 4111 to cover the drive unit 4114. The protective shell has an operating window through which the operating knob 41141 can pass, making it convenient for the user to adjust by hand.

[0045] Except for the end near the opening, which differs structurally from the outer adjustment plate 4111, the opposing side plate 412 retains its initial design, while the rest can follow the same setting as the adjustable side plate 411.

[0046] During construction: When it is necessary to adjust the inner diameter of the C-type clamp 41 to accommodate different specifications of horizontal beams 11 or vertical beams 12, matching can be achieved by adjusting the distance between the adjustable side plate 411 and the opposite side plate 412. Specifically, this includes widening the arm width from the adjustable side plate 411 to the pivot 413, or the wall width from the opposite side plate 412 to the pivot 413, or adjusting both simultaneously. For example, when widening the arm width from the adjustable side plate 411 to the pivot 413, rotate the operating knob 41141 clockwise to allow it to pass through. The torque is transmitted to the pulley 41142 via the synchronous belt 41143, which drives the rotating connecting rod 41133 and the threaded drive rod 41132 to rotate coaxially. The rotation of the threaded drive rod 41132 drives the expansion plate 41131 to obtain an outward thrust, thereby causing the expansion plate 41131, the outer adjusting plate 4111, the rotating connecting rod 41133, and the drive unit 4114 to move outward as a whole, thereby increasing the distance between the inner adjusting plate 4112 and the outer adjusting plate 4111. The reverse operation shortens this distance.

[0047] Reference Figure 9 As shown, the third embodiment of the C-type buckle fixing device 4 is further optimized into a fourth embodiment. This solution aims to achieve convenient lubrication of the fastening bolt 42 before tightening. The specific structure is as follows: a detachable lubrication component 6 is provided on the outside of the outer adjusting plate 4111, which includes a guide rod 61 coaxially mounted with the operating knob 41141 and an applicator 62 assembled at the end. At the same time, a paste storage box 63 is provided on the surface of the outer adjusting plate 4111 on the opposite side of the fastening bolt 42. When the operating knob 41141 is rotated, it drives the guide rod 61 and the applicator 62 to rotate coaxially, so that the paste storage box 63 and the fastening bolt 42 are located on the rotation path of the applicator 62. The applicator 62 adheres to the lubricant to complete the application of lubricant to the thread surface of the fastening bolt 42.

[0048] To ensure that the applicator 62 can smoothly contact and pass through the fastening bolt 42 and the paste storage box 63, the structure of the applicator 62 is optimized as follows: The applicator 62 is symmetrically arranged with the operating knob 41141 as the center, and includes a brush plate 621 hinged to the end of the guide rod 61. Its brush surface is set along the rotation trajectory. The outer wall of the brush plate 621 is rigidly connected to the traction rod 622. At the same time, the end of the guide rod 61 near the brush plate 621 is rigidly connected to the rib plate 623 on the same side as the brush surface and the limiting baffle 625 that intercepts the brush plate 621. The traction rod 622 and the rib plate 623 are elastically connected by a third spring 624.

[0049] The storage box 63 is filled with lubricating paste, and the bottom of the storage box 63 has a groove that exposes a portion of the lubricating paste, so that the brush surface of the brush plate 621 can be adapted to the groove and pick up the lubricating paste during rotation.

[0050] During construction: When the operating knob 41141 is rotated to adjust the inner diameter of the adjustable side plate 411 and the opposite side plate 412, it simultaneously drives the guide rod 61 and the applicator 62 to rotate clockwise. The brush surface of the brush plate 621 sweeps across the groove of the paste storage box 63 to pick up lubricant, and applies lubricant to the thread surface of the fastening bolt 42 when it passes through it, so as to achieve pre-lubrication and reduce the frictional resistance when the fastening bolt 42 is tightened. At the same time, when the brush plate 621 contacts the fastening bolt 42 or the paste storage box 63, it is affected by the reaction force and deflects in the opposite direction of rotation around the hinge axis of the guide rod 61, pulling the third spring 624 to extend, ensuring smooth passage through the fastening bolt 42 and the paste storage box 63 and completing the oiling and oil picking actions. After the corresponding actions are completed, it can be reset under the elastic potential energy of the third spring 624.

[0051] Reference Figures 10 to 13 As shown, the quick-release fixing device can also be a hook-type fixing device 5. The hook-type fixing device 5 includes a hanging body 51 that is fastened to the surface of the crossbeam 11 or the vertical beam 12. The outer wall of the hanging body 51 is provided with an adjustable hanging part 53 that can be raised and lowered, and a lifting drive mechanism 52 that drives the adjustable hanging part 53 to move linearly. The upper end of the locking connector 54 is coupled inside the adjustable hanging part 53, and the lower end of the locking connector 54 can be connected to the profiled steel sheet 3 through the assembly bolt 55. Its advantage over the C-type buckle fixing device 4 is that it can adjust the gap between the profiled steel sheet 3 and the crossbeam 11 or the vertical beam 12 by lifting the profiled steel sheet 3, and make the profiled steel sheet 3 stably fixed in the frame body 1.

[0052] The lifting drive mechanism 52 includes a lead screw 521 rotatably installed on the outside of the hanging body 51 and a limit rod 522 symmetrically distributed therewith. The adjusting hanging part 53 is threaded through the lead screw 521. By rotating the adjusting lead screw 521, the adjusting hanging part 53 is driven to move vertically to adjust the locking point of the locking connector 54, thereby determining the lifting distance of the profiled steel sheet 3.

[0053] To achieve rapid locking and unlocking of the adjusting bracket 53 and the locking connector 54, the following embodiment optimizes the structure of the adjusting bracket 53: The adjusting bracket 53 includes a carrier box 531 with lead screws 521 and limit rods 522 penetrating both sides. The carrier box 531 is threadedly connected to the lead screws 521. Two symmetrically arranged latches 532 are slidably connected to the bottom cavity of the carrier box 531. The latches 532 are elastically connected to the inside of the carrier box 531 by a first spring 533. A first pull rod 534 extending out of the carrier box 531 is rigidly connected to the side wall of the latches 532. The side wall of the carrier box 531 is provided with a slide for the first pull rod 534 to move. The bottom wall of the carrier box 531 has an opening for the lock head 541 to pass through.

[0054] The locking connector 54 includes a rigidly connected lock head 541 and an adjustable rod 542, as well as a hanging ring 543 that can be detachably installed at the bottom of the adjustable rod 542. The surface of the hanging ring 543 can be detachably fitted with an assembly bolt 55, which can be inserted into a pre-set screw hole on the surface of the profiled steel sheet 3 to fix the profiled steel sheet 3.

[0055] Among them, the top of the lock head 541 is an arc surface, and the edge of the adjacent end of the latch 532 is chamfered inward to form a conical end face, so that the latch 532 can be automatically opened when the lock head 541 moves upward.

[0056] During construction: When the profiled steel sheet 3 needs to be fixed by the hook-type fixing device 5, rotate the adjusting screw 521 to drive the adjusting bracket 53 to move vertically to the designated locking point. Then, drag the locking connector 54 down to make the hanging ring 543 align with the screw hole on the side wall of the profiled steel sheet 3. Tighten the assembly bolt 55 to complete the connection. Drag the adjustable rod 542 to make the lock head 541 move up to open the lock buckle 532 and compress the first spring 533. After the bottom wall of the lock head 541 is separated from the top wall of the lock buckle 532, the lock buckle 532 resets and locks the lock head 541 under the elastic force of the first spring 533, thereby adjusting the distance between the profiled steel sheet 3 and the frame body 1 to ensure stability. When the lock head 541 needs to be removed, drag the first pull rod 534 to open the lock buckle 532 to release the constraint, and the lock head 541 can be pulled out from the bearing box 531.

[0057] To facilitate one-handed operation of the lock head 541 and enable it to retract with the latch 532, the structure of the lock head 541 has been further optimized and improved. Specifically, the lock head 541 includes a base 5411 fixed to the top of the adjustable rod 542, and telescopic longitudinal arms 5412 hinged to both sides and connected to the top arc surface. The telescopic core inside the telescopic longitudinal arm 5412 is hinged to a horizontal arm 5413 that can be inserted into the receiving groove of the base 5411. The outer side of the horizontal arm 5413 is rigidly connected to a second pull rod 5414, and the two second pull rods 5414 are elastically connected by a second spring 5415.

[0058] During construction: When it is necessary to remove the lock head 541 from the carrier box 531, hold the two second pull rods 5414 with one hand and apply pressure to the second spring 5415 to compress it. The second pull rods 5414 move closer to each other, so that the cross arm 5413 extends into the receiving groove of the base 5411. Pull the telescopic core of the telescopic longitudinal arm 5412 towards the center to make it deflect and retract until the telescopic longitudinal arm 5412 and the cross arm 5413 form a conical end face that fits with the lock 532, and the lock head 541 can be pulled out smoothly.

[0059] Note that the scope of protection of this invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, in accordance with the technical plan and improved concept of this invention, should be included under the protection of this invention.

Claims

1. A modular assembly structure for a bag filter housing, comprising a frame (1), the frame (1) being enclosed by a crossbeam (11) and a vertical beam (12) detachably connected to its ends, wherein a profiled steel plate (3) is placed inside the frame (1), characterized in that: A quick-release fixing device is coupled to the frame (1) to limit and fix the profiled steel sheet (3).

2. The modular assembly structure of the bag filter housing according to claim 1, characterized in that: The quick-release fixing device is a C-type buckle fixing device (4). The C-type buckle fixing device (4) includes a C-type sleeve (41) that can be fitted onto the surface of the crossbeam (11) or the vertical beam (12). The C-type sleeve (41) consists of two parallel side plates and a connecting plate between them. One side plate extends axially, and the other side plate is bent inward to form an L-shaped support. An opening is formed between the two for the crossbeam (11) or the vertical beam (12) to enter and exit. The side plate of the C-type sleeve (41) extending axially is threaded with a fastening bolt (42) to constrain the opening. The opening extends into the C-type sleeve (41) to form a C-type groove, which is used to embed the crossbeam (11) or the vertical beam (12) into the side of the profiled steel sheet (3).

3. The modular assembly structure of the bag filter housing according to claim 2, characterized in that: The C-type sleeve (41) includes an adjustable side plate (411) and an opposing side plate (412). The adjacent ends of the adjustable side plate (411) and the opposing side plate (412) are respectively provided with grooves and matching protrusions. The protrusions are inserted into the grooves and are hinged by a movable through-hole pivot (413).

4. The modular assembly structure of the bag filter housing according to claim 3, characterized in that: The adjustable side plate (411) includes an outer adjusting plate (4111), an inner adjusting plate (4112) located inside the outer adjusting plate (4111) and away from the opening, a spacing adjustment mechanism (4113) assembled between the outer adjusting plate (4111) and the inner adjusting plate (4112) for adjusting the spacing, and a drive unit (4114) provided outside the outer adjusting plate (4111) to provide driving force to the spacing adjustment mechanism (4113).

5. The modular assembly structure of the bag filter housing according to claim 4, characterized in that: The spacing adjustment mechanism (4113) includes an extension plate (41131), which is integrally formed by a pull plate and a grid plug; the inner adjustment plate (4112) has a cavity for the grid plug to move inside, and its end is provided with an opening through which the pull plate passes, and the end of the pull plate is rigidly connected to the outer adjustment plate (4111).

6. The modular assembly structure of the bag filter housing according to claim 5, characterized in that: The spacing adjustment mechanism (4113) also includes two parallel threaded drive rods (41132). The threaded drive rods (41132) pass through the grid plug of the expansion plate (41131) through the thread and are rotatably installed in the channel preset on the side of the inner adjustment plate (4112). The channel is connected to the cavity of the inner adjustment plate (4112). The spacing adjustment mechanism (4113) also includes a rotating connecting rod (41133) that passes through the outer adjustment plate (4111) and is rotatably connected to it. The rotating connecting rod (41133) is slidably sleeved in the threaded drive rod (41132), and the contact part of the two is provided with a convex and concave structure that is coupled to each other.

7. The modular assembly structure of the bag filter housing according to claim 6, characterized in that: The drive unit (4114) includes a pulley (41142) fixed to the end of the rotating connecting rod (41133), and an operating knob (41141) located between the pulley (41142) and the fastening bolt (42) and rotatably mounted on the outer wall of the outer adjusting plate (4111). The operating knob (41141) and the pulley (41142) are coplanar and are connected to each other by a synchronous belt (41143).

8. The modular assembly structure of the bag filter housing according to claim 7, characterized in that: The outer adjusting plate (4111) is provided with a detachable lubrication assembly (6), which includes a guide rod (61) coaxially mounted with the operating knob (41141) and an applicator (62) mounted at the end. At the same time, a paste storage box (63) is provided on the surface of the outer adjusting plate (4111) opposite to the fastening bolt (42). When the operating knob (41141) is rotated, it drives the guide rod (61) and the applicator (62) to rotate coaxially, so that the paste storage box (63) and the fastening bolt (42) are located on the rotation path of the applicator (62). The applicator (62) adheres to the lubricant to complete the application of lubricant to the thread surface of the fastening bolt (42).

9. The modular assembly structure of the bag filter housing according to claim 8, characterized in that: The applicator (62) is symmetrically arranged around the operating knob (41141) and includes a brush plate (621) hinged to the end of the guide rod (61). The brush surface is set along the rotation trajectory. The outer wall of the brush plate (621) is rigidly connected to the traction rod (622). At the same time, the end of the guide rod (61) near the brush plate (621) is rigidly connected to a rib plate (623) on the same side as the brush surface and a limiting baffle (625) that intercepts the brush plate (621). The traction rod (622) and the rib plate (623) are elastically connected by a third spring (624).

10. The modular assembly structure of the bag filter housing according to claim 1, characterized in that: The quick-release fixing device is a hook-type fixing device (5). The hook-type fixing device (5) includes a main body (51) of the hanger that is fastened to the surface of the crossbeam (11) or the vertical beam (12). The outer wall of the main body (51) is provided with an adjustable hanger (53) that can be raised and lowered, and a lifting drive mechanism (52) that drives the adjustable hanger (53) to move linearly. The upper end of the locking connector (54) is coupled in the adjustable hanger (53). The lower end of the locking connector (54) can be connected to the profiled steel plate (3) by the assembly bolt (55).

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