Dust removal filter bag convenient to install

Abstract

The invention discloses a convenient-to-install dust removal filter bag which comprises a fixed disc, the fixed disc is installed on external dust removal equipment, a middle frame is installed on the fixed disc, an expansion mechanism is connected to the middle frame and a gear in a matched mode, a plurality of sealing grooves are formed in the middle frame at equal intervals, and the expansion mechanism is connected to the middle frame and the gear in a matched mode. The design of the synchronizing mechanism improves the convenience and efficiency of installation, when an operator sleeves the filter bag body on the top plate and makes the fixed edge abut against the lower end face of the fixed disc, the operation of the whole synchronizing mechanism can be triggered only by simply pulling the pull rod, and the top plate synchronously abuts against the inner wall of the filter bag body, so that the operation is convenient. According to the design, the installation steps are greatly simplified, the installation accuracy and the sealing reliability are improved, and therefore the overall performance of the dust removal system is remarkably improved, and the service life of the dust removal system is remarkably prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal filter bags that are easy to install, and more particularly to a dust removal filter bag that is easy to install. Background Art

[0002] Under current technical conditions, the installation process of many dust filter bags when they are put into use is relatively complicated, which brings considerable trouble to users. The installation of these filter bags usually requires multiple steps. First, they need to be socketed, that is, one end of the filter bag is connected to the interface on the dust removal equipment. This process often requires precise alignment of the interface and may involve the use of some auxiliary tools to ensure the firmness and sealing of the connection. However, it is not enough to just complete the socketing. More cumbersome installation steps are required next, including fixing the position of the filter bag, adjusting the shape of the filter bag, and connecting related accessories. These steps are not only time-consuming, but also for unskilled operators, they may increase the chance of installation errors, thereby affecting the overall convenience of use.

[0003] Furthermore, due to the complexity of the installation process, it not only increases the difficulty of operation, but may also cause unstable performance of the installed filter bags during use. For example, if the connection and installation are not firm enough, the filter bags may shift or fall off during use, which will not only reduce the dust removal efficiency, but may also cause damage to the equipment. Therefore, in order to ensure that the dust filter bags can play their due role, the operator needs to spend more time and energy to ensure that each step of the installation is correct. This cumbersome installation process undoubtedly increases maintenance costs and reduces the operating efficiency of the entire dust removal system, becoming one of the problems that need to be urgently solved in current technology. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the problems existing in the prior art, the present invention provides a dust removal filter bag that is easy to install to solve the technical problems mentioned in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dust filter bag that is easy to install, comprising a fixed plate, the fixed plate is installed on an external dust removal device, a synchronization mechanism is arranged on the fixed plate, the synchronization mechanism comprises an intermediate frame, an expansion mechanism, a gear, an internal shaft, a folding plate, an inner buckle strip, a sealing spring, a sealing strip, a filter bag body, a fixed edge, a telescopic mechanism, an expansion plate and a top plate, the intermediate frame is installed on the fixed plate, the expansion mechanism is cooperatively connected to the intermediate frame and the gear, a sealing groove is opened on the intermediate frame, a plurality of the sealing grooves are arranged at equal intervals, and a plurality of the sealing grooves are respectively installed There is an internal shaft, each sealing shaft is rotatably installed with a gear, each gear is installed with a folding plate, an inner buckle strip is installed on the other end of the folding plate, a plurality of sealing springs are installed on each inner buckle strip, and a sealing strip is installed on the other end of the plurality of sealing springs, the fixed edge is attached to the fixed plate, and the plurality of sealing strips are pressed on the fixed edge, the telescopic mechanism is cooperatively connected to the intermediate frame and the expansion plate, a plurality of expansion plates are provided, and top plates are respectively installed on the plurality of expansion plates, the filter bag body is installed on the fixed edge, and the plurality of top plates are in contact with the inner wall of the filter bag body.

[0008] The present invention is further configured as follows: the expansion mechanism includes a sliding bar, an expansion frame and a roller; a plurality of sliding bars are provided, and the plurality of sliding bars are equidistantly installed on a fixed plate and an intermediate frame; a plurality of rollers are rotatably installed on upper and lower sides of the expansion frame, respectively; the plurality of rollers are respectively engaged with upper and lower end faces of the sliding bar; and the expansion plate is connected to the expansion frame. This design achieves smooth movement of the rack through the cooperation of the sliding bar and the roller, thereby ensuring the stability and accuracy of the expansion process; at the same time, the equidistant installation of the plurality of sliding bars provides uniform supporting force, thereby effectively preventing deflection or unevenness that may occur during the expansion process.

[0009] The present invention is further configured such that a plurality of expansion frames are provided, and a transverse plate is respectively provided on the plurality of expansion frames, a rack is respectively provided on each of the transverse plates, the plurality of racks are respectively meshed with gears, a limiting sleeve is provided on the fixed plate, a plurality of limiting sleeves are equidistantly provided, and the plurality of limiting sleeves are respectively slidably connected to the racks. This structural design realizes the synchronization and precise control of the expansion process through the meshing of the racks and gears, and the provision of the limiting sleeves further ensures the stability and precision of the rack movement, and effectively prevents the deviation or shaking of the rack during the movement.

[0010] The present invention is further configured as follows: the telescopic mechanism includes a guide rod, a sliding sleeve and a bottom plate; a plurality of guide rods are provided, and the plurality of guide rods are respectively installed on the lower end surface of the intermediate frame; a plurality of sliding sleeves are respectively slidably connected to the plurality of guide rods; a bottom plate is fixedly installed on the lower end surfaces of the plurality of guide rods; this design realizes the smooth movement of the telescopic mechanism through the cooperation of a plurality of guide rods and the sliding sleeves; the setting of the bottom plate provides a solid support for the entire mechanism, ensuring the stability and reliability of the telescopic process.

[0011] The present invention is further configured such that extension plates are provided at the four corners and the upper and lower sides of the plurality of sliding sleeves, a pitch-changing rod is threadedly provided between every two of the extension plates, reverse threads are provided between the extension plates on the upper and lower sides and the pitch-changing rod, and a rotating sleeve is coaxially provided on each of the pitch-changing rods. This design realizes precise adjustment of the distance between the sliding sleeves through the reverse thread setting of the pitch-changing rod, and the setting of the rotating sleeve facilitates the operation, making the adjustment process more convenient and precise.

[0012] The present invention is further configured as follows: a top shaft is fixedly provided on the side wall of each sliding sleeve, a top sleeve is rotatably provided on the top shaft, an adjustment hole is opened on the side wall of the expansion plate, a plurality of the adjustment holes are equidistantly arranged, a resistance shaft is provided on the inner thread of the adjustment hole, a resistance sleeve is rotatably provided on the resistance shaft, a telescopic rod is slidably provided between the resistance sleeve and the top sleeve, a two-way rod is threadedly provided between the resistance sleeve and the top sleeve, the two-way rod and the resistance sleeve and the top sleeve are reversely threaded, a hexagonal sleeve is coaxially provided on the two-way rod, and lateral holes are opened on each side of the hexagonal sleeve. This structural design realizes precise adjustment in multiple dimensions. Through the cooperation of the resistance shaft, the resistance sleeve, the telescopic rod and the two-way rod, fine-tuning can be performed in multiple directions, thereby ensuring the accuracy and stability of the filter bag installation.

[0013] The present invention is further configured as follows: a bottom rod is rotatably provided on the bottom plate, a bottom ring is symmetrically provided on the bottom rod, the two bottom rings are respectively fitted on the two ends of the bottom plate, an adjusting spring is fixedly provided on the sliding sleeve at the lower end, a receiving sleeve is provided on the other end of the adjusting spring, the bottom rod is threadedly connected in the receiving sleeve, an insertion rod is provided on the lower end surface of the receiving sleeve, an insertion hole is opened on the bottom plate, and the insertion rod is slidably connected in the insertion hole. This design realizes the initial position adjustment of the entire mechanism through the cooperation of the bottom rod, the bottom ring and the adjusting spring.

[0014] The present invention is further configured such that a plurality of expansion plates are respectively provided with stabilizing rods, each of the stabilizing rods is respectively sleeved with a push spring, the push spring is fixedly mounted on the expansion plate, a bottom frame is respectively slidably provided on the plurality of stabilizing rods, a through hole is opened on the bottom frame, the through hole and the bottom rod are coaxially arranged, this design provides additional support for the expansion plate through the cooperation of the stabilizing rod and the push spring, and the arrangement of the bottom frame and the through hole further enhances the stability of the entire filter bag body.

[0015] The present invention is further configured as follows: an adjusting tube is fixedly provided on the intermediate frame, a synchronization hole is coaxially provided in the adjusting tube, a synchronization rod is slidably provided in the synchronization hole, the synchronization rod is threadedly connected in a plurality of the sliding sleeves, a pull rod is coaxially provided on the synchronization rod, a one-way groove is provided on the pull rod, a plurality of the one-way grooves are equidistantly arranged, a contraction groove is provided on the inner wall of the adjusting tube, a slide plate is slidably provided in the contraction groove, a clamping block is provided on the slide plate, an insertion block is provided on the side wall of the clamping block, the insertion block is clamped in the one-way groove, a return spring is provided on the clamping block, and the return spring is connected to the fixed sleeve. This structural design realizes the synchronous adjustment and locking functions of the entire mechanism. Through the cooperation of the synchronization rod, the pull rod and the clamping block, the position of the sliding sleeve can be controlled and locked, thereby ensuring the stability of the entire mechanism.

[0016] The present invention is further configured as follows: a pull rope is provided on the blocking block, a telescopic hole is opened on the adjusting tube, and a plurality of telescopic holes are provided. An unbundling sleeve is provided on the plurality of pull ropes. The unbundling sleeve and the pull rod are coaxially arranged. A support spring is fixedly provided on the unbundling sleeve. The support spring is fixedly installed on the upper end surface of the adjusting tube. This design realizes the quick unlocking function of the mechanism through the cooperation of the pull rope and the unbundling sleeve. The setting of the support spring provides the necessary restoring force for the unlocking process, making the entire operation process safer and controllable.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a dust filter bag that is easy to install and has the following beneficial effects:

[0019] 1. The design of the synchronous mechanism improves the convenience and efficiency of installation. Through the coordinated action of the fixed plate, intermediate frame, gear, internal shaft, folding plate, inner buckle strip, sealing spring and sealing strip, the rapid installation and sealing of the filter bag body is realized. When the operator puts the filter bag body on the top plate and puts the fixed edge against the lower end surface of the fixed plate, he only needs to pull the pull rod to trigger the operation of the entire synchronous mechanism. The expansion mechanism is immediately started, and the rack is driven to expand synchronously through the cooperation of the sliding bar, expansion frame and roller, and then the gear is driven to rotate. This process not only ensures the synchronous inward buckling of the inner buckle strip, but also makes the sealing strip evenly pressed on the fixed edge, and the sealing spring provides appropriate sealing force to effectively seal the outside of the fixed edge. At the same time, the top plate is synchronously pressed against the inner wall of the filter bag body, further enhancing the sealing effect. This design greatly simplifies the installation steps, improves the installation accuracy and sealing reliability, thereby significantly improving the overall performance and service life of the dust removal system.

[0020] 2. The expansion mechanism optimizes the installation process and use effect of the dust filter bag. Through the precise coordination of components such as sliding bars, expansion frames, rollers, transverse plates and racks, the uniform expansion and stable fixation of the filter bag body are achieved. When the operator pulls the pull rod, the expansion frame moves smoothly under the guidance of the sliding bar, driving the rack to engage the gear, thereby driving the entire expansion mechanism. The design of the limit sleeve ensures the stable engagement of the rack and the gear, and prevents possible deviations during the installation process. This design not only ensures the uniform expansion of the filter bag body, but also fully supports the inner wall of the filter bag body through the synchronous expansion of the top plate. The design of the expansion mechanism solves the problem of wrinkles or uneven expansion of the filter bag in traditional installation, significantly improving the filtration efficiency and service life of the filter bag. At the same time, this design also makes the removal and replacement of the filter bag easier and faster, greatly reducing maintenance time and cost.

[0021] 3. The design of the telescopic mechanism provides higher flexibility and precision for the installation and adjustment of the dust filter bag. Through the ingenious combination of the guide rod, sliding sleeve, bottom plate, pitch rod, top shaft, and contact shaft, the precise adjustment and fixation of the filter bag installation position is achieved. The operator can change the distance between the sliding sleeves by adjusting the pitch rod, and adjust the distance between the contact sleeve and the top sleeve by the two-way rod, so as to accurately control the position of the top plate. This design allows the operator to make fine adjustments according to the filter bags of different specifications to ensure the best installation effect. The design of the bottom rod and the adjustment spring provides the adjustment function of the initial position, which further enhances the adaptability of the system. Another major advantage of the telescopic mechanism is its parallelogram structure. This design ensures that the top plate maintains parallel movement during the expansion process, minimizes the pulling of the filter bag body, and improves the safety of installation and the service life of the filter bag. In addition, through the design of the pull rod and the card block, the installation position is quickly locked and released, which greatly improves the convenience and efficiency of operation. This multifunctional and high-precision telescopic mechanism not only simplifies the installation process, but also significantly improves the overall performance and reliability of the dust removal system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a dust removal filter bag that is easy to install in the present invention;

[0023] Figure 2 For the present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0024] Figure 3 It is a schematic diagram of the structure of the gear and the sealing strip in the present invention;

[0025] Figure 4 It is a schematic cross-sectional structural diagram of the fixed disk in the present invention;

[0026] Figure 5It is a schematic diagram of the structure of the expansion mechanism and the telescopic mechanism in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the expansion plate in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the abutment sleeve and the top sleeve in the present invention;

[0029] Figure 8 It is a structural schematic diagram of the telescopic mechanism and the sliding sleeve in the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the bottom frame in the present invention;

[0031] Fig.10 It is a structural schematic diagram of the telescopic mechanism in the present invention;

[0032] Fig.11 For the present invention Fig.10 Schematic diagram of the cross-sectional structure.

[0033] In the figure: 1, fixed plate; 2, middle frame; 3, gear; 4, internal shaft; 5, folding plate; 6, inner buckle strip; 7, sealing spring; 8, sealing strip; 9, filter bag body; 10, fixed edge; 11, expansion plate; 12, top plate; 13, sealing groove; 14, sliding strip; 15, expansion frame; 16, roller; 17, transverse plate; 18, rack; 19, limit sleeve; 20, guide rod; 21, sliding sleeve; 22, bottom plate; 23, extension plate; 24, pitch rod; 25, rotating sleeve; 26, top shaft; 27, top sleeve; 28, adjustment hole; 29, contact shaft; 30, Resistance sleeve; 31. Telescopic rod; 32. Two-way rod; 33. Hexagonal sleeve; 34. Lateral hole; 35. Bottom rod; 36. Bottom ring; 37. Adjustment spring; 38. Receiver sleeve; 39. Insertion rod; 40. Insertion hole; 41. Stabilizing rod; 42. Push spring; 43. Bottom frame; 44. Through hole; 45. Adjustment tube; 46. Synchronous hole; 47. Synchronous rod; 48. Pull rod; 49. One-way slot; 50. Contraction slot; 51. Slide plate; 52. Block; 53. Insertion block; 54. Return spring; 55. Pull rope; 56. Telescopic hole; 57. Release sleeve; 58. Support spring. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0037] See also Figure 1-11 A dust filter bag that is easy to install includes a fixed plate 1, which is installed on an external dust removal device. A synchronization mechanism is arranged on the fixed plate 1. The synchronization mechanism includes an intermediate frame 2, an expansion mechanism, a gear 3, an internal shaft 4, a folding plate 5, an inner buckle strip 6, a sealing spring 7, a sealing strip 8, a filter bag body 9, a fixed edge 10, a telescopic mechanism, an expansion plate 11 and a top plate 12. The intermediate frame 2 is installed on the fixed plate 1, and the expansion mechanism is connected to the intermediate frame 2 and the gear 3. A sealing groove 13 is opened on the intermediate frame 2, and a plurality of sealing grooves 13 are arranged at equal intervals, and the internal shafts 4 are respectively installed in the plurality of sealing grooves 13, each Gears 3 are rotatably installed on the internal shaft 4, and a folding plate 5 is installed on each gear 3. An inner buckle strip 6 is installed on the other end of the folding plate 5. A plurality of sealing springs 7 are installed on each inner buckle strip 6, and a sealing strip 8 is installed on the other end of the plurality of sealing springs 7. The fixed edge 10 is attached to the fixed plate 1, and a plurality of sealing strips 8 are pressed on the fixed edge 10. The telescopic mechanism is cooperatively connected to the intermediate frame 2 and the expansion plate 11. A plurality of expansion plates 11 are provided, and top plates 12 are respectively installed on the plurality of expansion plates 11. The filter bag body 9 is installed on the fixed edge 10, and a plurality of top plates 12 are in contact with the inner wall of the filter bag body 9.

[0038] Working principle: Since the fixed disk 1 is installed on the external equipment, when the corresponding filter bag body 9 needs to be installed, firstly, the corresponding filter bag body 9 is sleeved on the multiple top plates 12, and then the fixed edge 10 is driven to contact the lower end surface of the fixed disk 1, and then the pull rod 48 is pulled at this time, and then the expansion frame 15 can be driven to expand outward through the telescopic mechanism. Since each expansion frame 15 is respectively installed with multiple rollers 16, and the multiple rollers 16 are respectively engaged with the sliding bar 14 up and down, the process of limiting and then sliding can be performed, so that the synchronous expansion of the multiple racks 18 is driven. Since the rack 18 is engaged with the gear 3, and the stable engagement of the rack 18 and the gear 3 is guaranteed by the action of multiple limiting sleeves 19, the gear 3 will be driven along As the internal shaft 4 rotates, since the diameters of the gear 3 and the sealing groove 13 are the same, and the thickness of the fixed disk 1 is greater than the tooth spacing of the gear 3, the upper and lower sides of the sealing groove 13 are always in a sealed state. Since the folding plate 5 is installed on the gear 3, it will drive multiple inner buckle strips 6 to buckle inward synchronously, and then the sealing strip 8 is pressed on the fixed edge 10, and the corresponding sealing force is applied by the sealing spring 7. Then the outer side of the fixed edge 10 can be effectively sealed, and the expansion mechanism is used to synchronously ensure that the top plate 12 is synchronously pressed against the inner wall of the filter bag body 9, and then the sealing process is completed. At this time, the dust-containing air is filtered through the outer side of the filter bag body 9, and the filtered air passes through the fixed disk 1 through the inside of the filter bag body 9, thereby completing the filtration process.

[0039] To achieve expansion, add an expansion mechanism. Figure 1-5 The expansion mechanism includes a sliding bar 14, an expansion frame 15 and a roller 16. A plurality of sliding bars 14 are provided, and the plurality of sliding bars 14 are equidistantly installed on the fixed disk 1 and the intermediate frame 2. A plurality of rollers 16 are rotatably installed on the upper and lower sides of the expansion frame 15, and the plurality of rollers 16 are respectively meshed on the upper and lower end surfaces of the sliding bar 14. The expansion plate 11 is connected to the expansion frame 15. A plurality of expansion frames 15 are provided, and a plurality of expansion frames 15 are respectively provided with transverse plates 17, each transverse plate 17 is respectively provided with a rack 18, and the plurality of racks 18 are respectively meshed on the gear 3. A limiting sleeve 19 is provided on the fixed disk 1, and a plurality of limiting sleeves 19 are equidistantly provided, and the plurality of limiting sleeves 19 are respectively slidably connected to the rack 18.

[0040] Working principle: When the pull rod 48 can be used to drive multiple sliding sleeves 21 to slide upward along the guide rod 20, since the top sleeve 27 is slidably connected to the top shaft 26, and the contact sleeve 30 is slidably connected to the contact shaft 29, a parallelogram can be formed, so that multiple top plates 12 can be driven to move in parallel, so that multiple top plates 12 can be driven to expand synchronously and then make the top plates 12 contact the inner wall of the filter bag body 9, and then they can be fixed synchronously with the sealing strip 8 to complete the sealing process. Since the multiple protruding plates 23 are reversely threadedly connected to the pitch-changing rod 24, the distance between the multiple sliding sleeves 21 can be adjusted, and since the two-way rod 32 is also reversely threadedly connected to the contact sleeve 30 and the top sleeve 27, respectively, and the telescopic rod 31 is slidably connected to the contact sleeve 30 and the top sleeve 27, the distance between the contact sleeve 30 and the top sleeve 27 can be changed, so the distance between the contact sleeve 30 and the top sleeve 27 can be changed. The position of the changeable top plate 12, since the parallelogram will be adjusted up and down when in the parallel position, the amplitude of the up and down displacement can be changed by changing the position between the abutment sleeve 30 and the top sleeve 27. Since the up and down displacement is very small when close to 90 degrees, the top plate 12 can be made to be in a position close to 90 degrees when abutting against the filter bag body 9, thereby reducing the pulling on the filter bag body 9 and improving the safety of use. Since the abutment rod is rotatably connected to the bottom plate 22, and the bottom rings 36 on both sides are attached to the bottom plate 22, the bottom rod 35 can be limited, and the bottom rod 35 is threadedly connected to the receiving sleeve 38, so that the position of the adjusting spring 37 can be changed. The adjusting spring 37 is connected to the sliding sleeve 21 at the lower end, so the initial positions of multiple sliding sleeves 21 can be adjusted, thereby realizing the adjustment of the initial positions of multiple top plates 12, thereby ensuring the convenience of adjustment.

[0041] See also Figure 6-11In order to realize the telescopic function, a telescopic mechanism is added, which includes a guide rod 20, a sliding sleeve 21 and a bottom plate 22. A plurality of guide rods 20 are provided, and the plurality of guide rods 20 are respectively installed on the lower end surface of the intermediate frame 2, and the plurality of sliding sleeves 21 are respectively slidably connected to the plurality of guide rods 20, and the bottom plates 22 are fixedly installed on the lower end surfaces of the plurality of guide rods 20. The plurality of sliding sleeves 21 are provided with extension plates 23 at the four corners and the upper and lower sides, and a pitch-changing rod 24 is threadedly provided between each two extension plates 23. The extension plates 23 and the pitch-changing rod 24 on the upper and lower sides are arranged with reverse threads, and a rotating sleeve 25 is coaxially provided on each pitch-changing rod 24, and a top shaft 26 is fixedly provided on the side wall of each sliding sleeve 21, and a top sleeve 27 is rotatably provided on the top shaft 26, so as to expand the space between the extension plates 23 and the pitch-changing rod 24. An adjustment hole 28 is provided on the side wall of the plate 11, and a plurality of adjustment holes 28 are arranged at equal intervals. A conflict shaft 29 is provided with an inner thread of the adjustment hole 28, and a conflict sleeve 30 is rotatably provided on the conflict shaft 29. A telescopic rod 31 is slidably provided between the conflict sleeve 30 and the top sleeve 27, and a two-way rod 32 is threaded between the conflict sleeve 30 and the top sleeve 27. The two-way rod 32 and the conflict sleeve 30 and the top sleeve 27 are arranged with reverse threads. A hexagonal sleeve 33 is coaxially provided on the two-way rod 32, and a lateral hole 34 is provided on each side of the hexagonal sleeve 33. A bottom rod 35 is rotatably provided on the bottom plate 22, and a bottom ring 36 is symmetrically provided on the bottom rod 35. The two bottom rings 36 are respectively attached to the two ends of the bottom plate 22, and an adjustment spring 37 is fixedly provided on the sliding sleeve 21 at the lower end. The other end of the adjustment spring 37 A receiving sleeve 38 is provided on the end, and the bottom rod 35 is threadedly connected in the receiving sleeve 38. An insertion rod 39 is provided on the lower end surface of the receiving sleeve 38. An insertion hole 40 is provided on the bottom plate 22, and the insertion rod 39 is slidably connected in the insertion hole 40. Stabilizing rods 41 are respectively provided on multiple expansion plates 11, and each stabilizing rod 41 is respectively sleeved with a push spring 42, and the push spring 42 is fixedly installed on the expansion plate 11. Bottom frames 43 are slidably provided on multiple stabilizing rods 41, and a through hole 44 is provided on the bottom frame 43. The through hole 44 and the bottom rod 35 are coaxially arranged. An adjusting tube 45 is fixedly provided on the intermediate frame 2, and a synchronization hole 46 is coaxially provided in the adjusting tube 45. A synchronization rod 47 is slidably provided in the synchronization hole 46. The synchronization rod 47 is threadedly connected in multiple sliding sleeves 21, and the synchronization rod 47 is threadedly connected in multiple sliding sleeves 21. A pull rod 48 is coaxially provided on the step rod 47, and a one-way groove 49 is opened on the pull rod 48, and a plurality of one-way grooves 49 are equidistantly arranged. A contraction groove 50 is opened on the inner wall of the adjusting tube 45, and a slide plate 51 is slidably provided in the contraction groove 50, and a clamping block 52 is provided on the slide plate 51, and an insertion block 53 is provided on the side wall of the clamping block 52, and the insertion block 53 is clamped in the one-way groove 49, and a return spring 54 is provided on the clamping block 52, and the return spring 54 is connected to the fixed sleeve, and a pull rope 55 is provided on the clamping block 52. A telescopic hole 56 is opened on the adjusting tube 45, and a plurality of telescopic holes 56 are arranged, and an unfastening sleeve 57 is provided on the plurality of pull ropes 55, and the unfastening sleeve 57 and the pull rod 48 are coaxially arranged, and a support spring 58 is fixedly provided on the unfastening sleeve 57, and the support spring 58 is fixedly installed on the upper end surface of the adjusting tube 45.

[0042] Working principle: When the pull rod 48 is pulled, the synchronous rod 47 can be driven to move upward, and the return spring 54 can ensure that the card block 52 has a downward thrust, so that the slide plate 51 can be retracted along the contraction groove 50 so that the insertion block 53 is stuck in the one-way groove 49. The position of the synchronous rod 47 can be changed by pulling upward, and then when the insertion block 53 is stuck in the one-way groove 49, when it is subjected to a downward pulling force, the insertion block 53 will slide downward accordingly, so the slide plate 51 will slide and retract along the contraction groove 50, so that multiple card blocks 52 are against the side wall of the pull rod 48, thereby ensuring the pull rod 48. The locking cam 57 is fixed in place, and the synchronous rod 47 is also in a fixed position under the downward pulling force, thereby ensuring the one-way clamping effect, thereby ensuring the position of the rack 18 and the top plate 12, and then completing the sealing process. When it needs to be unlocked, the unlocking sleeve 57 and the pull rod 48 are pulled synchronously, and then the slide plate 51 can be driven to slide upward against the shrinkage groove 50 under the action of the pull rope 55, and then the multiple clamping blocks 52 are in an expanded state, thereby unlocking the connection between the clamping blocks 52 and the pull rod 48, and then the upper and lower positions of the pull rod 48 can be adjusted, thereby unlocking the sealed state and replacing the corresponding filter bag body 9.

[0043] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dust filter bag that is easy to install, comprising a fixing plate (1), characterized in that: The fixed disk (1) is installed on the external dust removal device, and a synchronization mechanism is arranged on the fixed disk (1), and the synchronization mechanism comprises an intermediate frame (2), an expansion mechanism, a gear (3), an internal shaft (4), a folding plate (5), an inner buckle strip (6), a sealing spring (7), a sealing strip (8), a filter bag body (9), a fixed edge (10), a telescopic mechanism, an expansion plate (11) and a top plate (12). The intermediate frame (2) is installed on the fixed disk (1), and the expansion mechanism is cooperatively connected to the intermediate frame (2) and the gear (3). A sealing groove (13) is provided on the intermediate frame (2), and a plurality of sealing grooves (13) are arranged at equal intervals, and an internal shaft (4) is respectively installed in each of the plurality of sealing grooves (13), and each of the internal shafts (4) is rotatably installed. There are gears (3), each of which is respectively installed with a folding plate (5), the other end of the folding plate (5) is installed with an inner buckle strip (6), each of which is respectively installed with a plurality of sealing springs (7), and the other end of the plurality of sealing springs (7) is installed with a sealing strip (8), a fixed edge (10) is attached to a fixed plate (1), and a plurality of sealing strips (8) are pressed on the fixed edge (10), the telescopic mechanism is cooperatively connected to the intermediate frame (2) and the expansion plate (11), a plurality of expansion plates (11) are provided, and a top plate (12) is respectively installed on the plurality of expansion plates (11), a filter bag body (9) is installed on the fixed edge (10), and a plurality of the top plates (12) are pressed against the inner wall of the filter bag body (9).

2. The dust filter bag that is easy to install according to claim 1 is characterized in that: The expansion mechanism comprises a sliding bar (14), an expansion frame (15) and a roller (16). A plurality of sliding bars (14) are provided, and the plurality of sliding bars (14) are respectively and equidistantly mounted on a fixed plate (1) and an intermediate frame (2). The upper and lower sides of the expansion frame (15) are respectively rotatably mounted with a plurality of rollers (16). The plurality of rollers (16) are respectively engaged with the upper and lower end surfaces of the sliding bar (14). The expansion plate (11) is connected to the expansion frame (15).

3. The dust filter bag that is easy to install according to claim 2 is characterized in that: A plurality of expansion frames (15) are provided, and a transverse plate (17) is respectively provided on the plurality of expansion frames (15), and a rack (18) is respectively provided on each of the transverse plates (17). The plurality of racks (18) are respectively meshed with the gear (3), and a limiting sleeve (19) is provided on the fixed plate (1). A plurality of limiting sleeves (19) are equidistantly provided, and the plurality of limiting sleeves (19) are respectively slidably connected to the racks (18).

4. The dust filter bag that is easy to install according to claim 1 is characterized in that: The telescopic mechanism comprises a guide rod (20), a sliding sleeve (21) and a bottom plate (22); a plurality of guide rods (20) are provided, and the plurality of guide rods (20) are respectively mounted on the lower end surface of the intermediate frame (2); the plurality of sliding sleeves (21) are respectively slidably connected to the plurality of guide rods (20); and the bottom plate (22) is fixedly mounted on the lower end surfaces of the plurality of guide rods (20).

5. The dust filter bag that is easy to install according to claim 4 is characterized in that: The sliding sleeves (21) are provided with protruding plates (23) at four corners and upper and lower sides, a pitch-changing rod (24) is threadedly provided between every two protruding plates (23), the protruding plates (23) and the pitch-changing rod (24) at the upper and lower sides are arranged with reverse threads, and a rotating sleeve (25) is coaxially provided on each pitch-changing rod (24).

6. The dust filter bag that is easy to install according to claim 5 is characterized in that: A top shaft (26) is fixedly provided on the side wall of each sliding sleeve (21), and a top sleeve (27) is rotatably provided on the top shaft (26). An adjustment hole (28) is provided on the side wall of the expansion plate (11), and a plurality of the adjustment holes (28) are arranged at equal intervals. A resistance shaft (29) is provided internally with a thread in the adjustment hole (28), and a resistance sleeve (30) is rotatably provided on the resistance shaft (29). A telescopic rod (31) is slidably provided between the resistance sleeve (30) and the top sleeve (27), and a bidirectional rod (32) is threadedly provided between the resistance sleeve (30) and the top sleeve (27). The bidirectional rod (32) and the resistance sleeve (30) and the top sleeve (27) are arranged in opposite directions with threads. A hexagonal sleeve (33) is coaxially provided on the bidirectional rod (32), and a lateral hole (34) is provided on each side of the hexagonal sleeve (33).

7. The dust filter bag that is easy to install according to claim 6 is characterized by: A bottom rod (35) is rotatably provided on the bottom plate (22), and a bottom ring (36) is symmetrically provided on the bottom rod (35). The two bottom rings (36) are respectively fitted on the two ends of the bottom plate (22). An adjusting spring (37) is fixedly provided on the sliding sleeve (21) at the lower end, and a receiving sleeve (38) is provided on the other end of the adjusting spring (37). The bottom rod (35) is threadedly connected in the receiving sleeve (38), and an insertion rod (39) is provided on the lower end surface of the receiving sleeve (38). An insertion hole (40) is opened on the bottom plate (22), and the insertion rod (39) is slidably connected in the insertion hole (40).

8. The dust filter bag that is easy to install according to claim 7 is characterized in that: A plurality of expansion plates (11) are respectively provided with a stabilizing rod (41), each of the stabilizing rods (41) is respectively sleeved with a push spring (42), the push spring (42) is fixedly mounted on the expansion plate (11), a bottom frame (43) is respectively slidably provided on the plurality of stabilizing rods (41), a through hole (44) is provided on the bottom frame (43), and the through hole (44) and the bottom rod (35) are coaxially arranged.

9. The dust filter bag that is easy to install according to claim 8 is characterized in that: An adjusting tube (45) is fixedly provided on the intermediate frame (2), a synchronous hole (46) is coaxially provided in the adjusting tube (45), a synchronous rod (47) is slidably provided in the synchronous hole (46), the synchronous rod (47) is threadedly connected in a plurality of the sliding sleeves (21), a pull rod (48) is coaxially provided on the synchronous rod (47), a one-way groove (49) is provided on the pull rod (48), a plurality of the one-way grooves (49) are equidistantly arranged, a contraction groove (50) is provided on the inner wall of the adjusting tube (45), a slide plate (51) is slidably provided in the contraction groove (50), a clamping block (52) is provided on the slide plate (51), an insertion block (53) is provided on the side wall of the clamping block (52), the insertion block (53) is clamped in the one-way groove (49), a return spring (54) is provided on the clamping block (52), and the return spring (54) is connected to the fixed sleeve.

10. The dust filter bag that is easy to install according to claim 9 is characterized in that: The clamping block (52) is provided with a pull rope (55), and the adjusting tube (45) is provided with a telescopic hole (56). There are a plurality of telescopic holes (56). The pull ropes (55) are provided with an unfastening sleeve (57). The unfastening sleeve (57) and the pull rod (48) are coaxially arranged. A support spring (58) is fixedly arranged on the unfastening sleeve (57). The support spring (58) is fixedly mounted on the upper end surface of the adjusting tube (45).

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