Furled filter bag, dust removal unit and bag filter

Abstract

The utility model belongs to the technical field of environmental protection equipment, provide a kind of pleated filter bag, dust removal unit and cloth bag dust collector, the pleated filter bag includes bag body, elastic belt, support framework, lifting ring and drive rod, bag body is equipped with multiple transverse pleats along length direction;Elastic belt is arranged in bag body side;Support framework is arranged in bag body, two ends are connected with the two ends of bag body;Support framework includes several support rods;Several support rods are arranged at intervals around bag body, two ends are connected with the two ends of bag body respectively;Lifting ring is arranged in bag body, is connected with the middle part of bag body, and support rod and lifting ring sliding fit;Drive rod is equipped with outer thread, drive rod passes through lifting ring, and is screwed with lifting ring;Drive rod is used to be connected with the power output end of the driving assembly fixed on the upper side of flower plate.The pleated filter bag dust removal unit includes the above-mentioned pleated filter bag.The cloth bag dust collector includes the above-mentioned pleated filter bag dust removal unit.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection equipment technology, specifically relating to a pleated filter bag, a dust removal unit, and a bag filter dust collector. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device. It is suitable for collecting fine, dry, non-fibrous dust. The filter bags are made of woven filter cloth or non-woven felt, utilizing the filtration effect of the fibrous fabric to filter dust-laden gas. When the dust-laden gas enters the baghouse dust collector, larger, heavier dust particles settle down due to gravity and fall into the ash hopper. The gas containing finer dust particles is purified as it passes through the filter media, with the dust being trapped.

[0003] To further increase the filtration area, pleated filter bags are often used. Pleated filter bags are also known as pleated cloth bags, pleated filter bags, or star-shaped bags. A pleated filter bag is a filter bag with a pleated filter surface. The filter media of the pleated filter bag is folded and sewn, which increases the filtration area of ​​the original traditional round filter bag to 1.5-1.8 times.

[0004] Baghouse dust collectors typically use pulse-jet cleaning to clean the filter bags. However, due to the complex pleated structure of the bags, gas cannot penetrate evenly into all the pleats during the backflushing process, resulting in incomplete cleaning of these areas. This not only causes residual dust to gradually accumulate within the pleats, increasing the bag's operating resistance and reducing dust collection efficiency, but also, over time, leads to decreased air permeability and a shortened lifespan due to excessive dust buildup.

[0005] To this end, the applicant designed a pleated dust collector filter bag and a bag filter dust collector, and applied for and was granted an invention patent. The filter bag is provided with a transversely pleated filter bag and a drive assembly for driving the filter bag to partially unfold. The drive assembly includes a lifting frame and a lifting mechanism. The lifting frame is located outside the filter bag and connected to the middle of the filter bag. The lifting mechanism drives the lifting frame to move up and down, so that the upper and lower parts of the filter bag unfold sequentially without changing the total length of the filter bag.

[0006] However, its lifting frame is located outside the filter bag. On the one hand, dust easily accumulates on the lifting frame, and on the other hand, it affects the air circulation area and is easily corroded by dust-laden gas, affecting its service life. Utility Model Content

[0007] This utility model provides a pleated filter bag, a dust removal unit, and a bag filter, aiming to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: In a first aspect, embodiments of the present invention provide a pleated filter bag dust collection unit, comprising: The bag body has multiple horizontal pleats along its length and is connected to the decorative plate at the top. An elastic band is provided on the side of the bag body and is connected to the transverse pleats; A support frame is disposed inside the bag body, with both ends connected to both ends of the bag body, for supporting the bag body; the support frame includes a plurality of support rods; the plurality of support rods are arranged at intervals around the bag body, and the support rods are disposed inside the bag body, with both ends respectively connected to both ends of the bag body; A lifting ring is disposed inside the bag body and connected to the middle part of the bag body; the support rod passes through the lifting ring and slides with the lifting ring. The drive rod has an external thread, passes through the lifting ring, and is screwed to the lifting ring to drive the lifting ring to rise and fall by rotation; the drive rod is used to connect to the power output end of the drive assembly fixed on the upper side of the tube sheet.

[0009] In conjunction with the first aspect, in one possible implementation of the pleated filter bag provided by this utility model, a threaded sleeve is fixed on the lifting ring, and the drive rod passes through the threaded sleeve and is screwed to the threaded sleeve.

[0010] In conjunction with the first aspect, in one possible implementation of the pleated filter bag provided by this utility model, the support frame further includes a top ring and a bottom ring, the bottom ring being fixedly connected to the bottom of the bag body; the top ring being fixedly connected to the top of the bag body and used to connect to the perforated plate; the lower end of the support rod being fixedly connected to the bottom ring, and the upper end of the support rod being fixedly connected to the top ring; the drive rod being rotatably engaged with the bottom ring and the top ring.

[0011] In conjunction with the first aspect, in one possible implementation of the pleated filter bag provided by this utility model, the support frame further includes a plurality of support rings, each of which corresponds one-to-one with the transverse pleats. The outer side of the support ring is connected to the transverse pleats, and the inner side of the support ring is tangent to the support rod, having the freedom to slide along the support rod.

[0012] In conjunction with the first aspect, in one possible implementation of the pleated filter bag provided by this utility model, a mounting ring is fixedly provided at the top of the bag body, and an annular groove is provided on the side of the mounting ring along the circumference, the annular groove being used to engage with the perforated plate; the top ring is connected to the mounting ring.

[0013] In conjunction with the first aspect, in one possible implementation of the pleated filter bag provided by this utility model, the lifting ring, the top ring, the bottom ring, and the support ring are all provided with a plurality of ventilation holes.

[0014] Secondly, embodiments of this utility model provide a pleated filter bag dust removal unit, comprising a plurality of the aforementioned pleated filter bags, and further comprising: The tube sheet has multiple mounting holes, each corresponding to a pleated filter bag. The bag body passes through the mounting holes and connects to the tube sheet. The drive assembly is fixed to the upper side of the tube sheet, and its power output end is connected to the drive rod to drive the drive rod to rotate.

[0015] In conjunction with the second aspect, in one possible implementation of the pleated filter bag dust removal unit provided by this utility model, the driving component includes: Multiple driven wheels correspond one-to-one with the pleated filter bag, and the driven wheels are coaxially connected to the drive rod; The mounting bracket is located on the upper side of the tube sheet and connected to the tube sheet; the drive rod is rotatably engaged with the mounting bracket. The drive wheel rotates in conjunction with the mounting bracket; The motor assembly is fixedly installed, and its power output end is connected to the drive wheel to drive the drive wheel to rotate; Several transmission components are sequentially connected to the driving wheel and the driven wheel, connecting the driving wheel and all the driven wheels in series.

[0016] In conjunction with the second aspect, in one possible implementation of the pleated filter bag dust removal unit provided by this utility model, both the driving wheel and the driven wheel are sprockets, and the transmission component is a chain.

[0017] Thirdly, this utility model embodiment provides a bag filter dust collector, including several of the above-mentioned pleated filter bag dust collection units.

[0018] The beneficial effects of the pleated filter bag provided by this utility model are as follows: Compared with the prior art, the pleated filter bag provided by this utility model is provided with a lifting ring that slides with the support rod. The lifting ring is driven to move up and down by the drive rod, so that the upper and lower parts of the filter bag are unfolded in sequence. Since the lifting ring is located inside the bag body, dust will not accumulate, the impact on the air circulation area is also small, and it is not easily corroded by dust-laden gas.

[0019] The beneficial effects of the pleated filter bag dust removal unit provided by this utility model are as follows: Compared with the prior art, the pleated filter bag dust removal unit provided by this utility model is equipped with the above-mentioned pleated filter bag, and the lifting ring is located inside the bag body. Therefore, dust accumulation will not occur, the impact on the air circulation area is also small, and it is not easily corroded by dust-laden gas.

[0020] The beneficial effects of the bag filter provided by this utility model are as follows: Compared with the prior art, the bag filter provided by this utility model is equipped with the above-mentioned pleated filter bag dust collection unit, and the lifting ring is located inside the bag body. Therefore, dust accumulation will not occur, the impact on the air circulation area is also small, and it is not easily corroded by dust-laden gas. Attached Figure Description

[0021] Figure 1 A three-dimensional structural diagram of the pleated filter bag provided in an embodiment of this utility model; Figure 2 A three-dimensional structural diagram of the pleated filter bag after removing the bag body, provided in an embodiment of this utility model; Figure 3 for Figure 2 Enlarged view of part A in the image; Figure 4 A three-dimensional structural schematic diagram of the pleated filter bag dust removal unit provided in an embodiment of this utility model; Explanation of reference numerals in the attached figures: 10. Bag body; 11. Horizontal pleats; 12. Installation retaining ring; 20. Elastic band; 31. Support ring; 32. Top ring; 33. Bottom ring; 34. Support rod; 35. Vent hole; 40. Lifting ring; 41. Screw sleeve; 51. Drive rod; 52. Driven wheel; 53. Motor assembly; 54. Drive wheel; 55. Transmission component; 56. Mounting bracket; 60. Ceiling panel. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] Please refer to the following: Figure 1 to Figure 4 The present invention provides a pleated filter bag dust removal unit. The pleated filter bag includes a bag body 10, an elastic band 20, a support frame, a lifting ring 40, and a drive rod 51. The bag body 10 has multiple transverse pleats 11 along its length, and its upper end is connected to a tube sheet 60. The elastic band 20 is located on the side of the bag body 10 and connects to the transverse pleats 11. The support frame is located inside the bag body 10, with both ends connected to the two ends of the bag body 10, for supporting the bag body 10. The support frame includes several support rods 34. The support rods 34 are spaced apart around the bag body 10. The support rod 34 is located inside the bag body 10, with its two ends connected to both ends of the bag body 10 respectively; the lifting ring 40 is located inside the bag body 10 and connected to the middle of the bag body 10; the support rod 34 passes through the lifting ring 40 and slides with the lifting ring 40; the drive rod 51 is provided with external thread, passes through the lifting ring 40 and is screwed to the lifting ring 40, and is used to drive the lifting ring 40 to rise and fall by rotation; the drive rod 51 is used to connect to the power output end of the drive assembly fixed on the upper side of the tube sheet 60.

[0030] Specifically, at least two support rods 34 are arranged at intervals around the bag body 10. Preferably, three support rods 34 are arranged at intervals around the bag body 10.

[0031] It should be noted that the elastic band 20 on the side of the bag body 10 is connected to the transverse pleats 11, so that the transverse pleats 11 remain in a semi-expanded state when not subjected to other external forces, thereby increasing the filtration area. During pulse backflushing, the lifting ring 40 is first driven to move upward or downward by the drive assembly, causing some of the transverse pleats 11 on the bag body 10 to expand and some to compress, and then backflushing is performed. Afterward, the lifting ring 40 is driven to move in the opposite direction by the drive assembly, causing the previously compressed transverse pleats 11 to expand and compress the previously expanded transverse pleats 11, and then backflushing is performed again, and the lifting ring 40 is driven to reset, completing the pulse cleaning operation of the bag body 10. In this way, the transverse pleats 11 of the bag body 10 can be expanded without changing the overall length of the bag body 10, and without increasing the longitudinal installation space.

[0032] Specifically, the lifting ring 40 is first driven downward by the drive component, which unfolds the transverse pleats 11 above the lifting ring 40 and compresses the transverse pleats 11 below the lifting ring 40. Then, a backflushing is performed. At this time, the transverse pleats 11 above the lifting ring 40 are unfolded, thus effectively ensuring the dust removal effect of the bag body 10 above the lifting ring 40. Afterward, the lifting ring 40 is driven upward by the drive component, which compresses the transverse pleats 11 above the lifting ring 40 and unfolds the transverse pleats 11 below the lifting ring 40. A backflushing is performed again. At this time, the transverse pleats 11 below the lifting ring 40 are unfolded, thus effectively ensuring the dust removal effect of the bag body 10 below the lifting ring 40, thereby improving the overall dust removal effect of the bag body 10.

[0033] The elastic band 20 is an elastic rope or band with sufficient stretch to accommodate the change in length of the bag body 10 when the local transverse folds 11 are unfolded.

[0034] The beneficial effects of the pleated filter bag provided by this utility model are as follows: Compared with the prior art, the pleated filter bag provided by this utility model is provided with a lifting ring 40 that slides with the support rod 34. The lifting ring 40 is driven to move up and down by the drive rod 51, so that the filter bag of the upper half and the lower half of the bag body 10 are unfolded in sequence. Since the lifting ring 40 is located inside the bag body 10, dust will not accumulate, the impact on the air circulation area is also small, and it is not easily corroded by dust-laden gas.

[0035] like Figure 2 and Figure 3 As shown, in a specific embodiment of the pleated filter bag provided in this utility model, a screw sleeve 41 is fixed on the lifting ring 40, and the drive rod 51 passes through the screw sleeve 41 and is screwed to the screw sleeve 41.

[0036] Specifically, the threaded sleeve 41 is welded to the lifting ring 40 to increase the length of the threaded engagement with the drive rod 51, thereby making the transmission more stable.

[0037] like Figure 2 and Figure 3 As shown, in a specific embodiment of the pleated filter bag provided in this utility model, the support frame further includes a top ring 32 and a bottom ring 33. The bottom ring 33 is fixedly connected to the bottom of the bag body 10; the top ring 32 is fixedly connected to the top of the bag body 10 and is used to connect to the tube sheet 60; the lower end of the support rod 34 is fixedly connected to the bottom ring 33, and the upper end of the support rod 34 is fixedly connected to the top ring 32; the drive rod 51 is rotatably engaged with the bottom ring 33 and the top ring 32.

[0038] Specifically, the top ring 32 and bottom ring 33 can effectively support the large diameter of the transverse pleats 11, and are connected to the bag body 10 by means of bonding, sewing, etc., to open up the bag body 10, and form a cage structure with the several support rods 34 arranged in the middle, effectively supporting the bag body 10.

[0039] It should be noted that the external thread on the drive rod 51 is only provided between the top ring 32 and the bottom ring 33, and avoids the top ring 32 and the bottom ring 33. That is, the connection between the drive rod 51 and the top ring 32 and the bottom ring 33 is a smooth rod.

[0040] Furthermore, bearings can be installed at the connection between the drive rod 51 and the top ring 32 and the bottom ring 33 to reduce friction.

[0041] like Figure 2 and Figure 3 As shown, in a specific embodiment of the pleated filter bag provided in this utility model, the support frame further includes a plurality of support rings 31, each of which corresponds to a transverse pleat 11. The outer side of the support ring 31 is connected to the transverse pleat 11, and the inner side of the support ring 31 is tangent to the support rod 34, thus having the freedom to slide along the support rod 34.

[0042] It should be noted that the support ring 31 is a metal ring, plastic ring or other ring with a certain degree of rigidity, which can effectively support the large diameter of the transverse pleats 11. It is connected to the bag body 10 by means of bonding, sewing or other methods, so as to open up the bag body 10 and ensure the filtration area.

[0043] like Figure 1 and Figure 2 As shown, in a specific embodiment of the pleated filter bag provided in this utility model, the top of the bag body 10 is fixedly provided with a mounting ring 12, and the side of the mounting ring 12 is provided with an annular groove, which is used to engage with the tube sheet 60; the top ring 32 is connected to the mounting ring 12.

[0044] It should be noted that the connection between the top ring 32 and the mounting ring 12 specifically means that the top ring 32 abuts against the lower side of the mounting ring 12, or is directly and fixedly connected to the mounting ring 12 by means of screws, adhesives, etc.

[0045] Specifically, the mounting ring 12 is a rubber ring that can be bent and inserted into the mounting hole on the tube sheet 60 inside the dust collector, so that the tube sheet 60 is locked in the groove and fixed.

[0046] In addition, the mounting ring 12 can also be made of rigid materials such as hard plastic or metal. In this case, the mounting ring 12 can be fixed by bolts.

[0047] like Figure 2 and Figure 3 As shown, in a specific embodiment of the pleated filter bag provided in this utility model, the lifting ring 40, the top ring 32, the bottom ring 33 and the support ring 31 are all provided with a plurality of ventilation holes 35 to ensure the flow area.

[0048] It should be noted that the lifting ring 40, top ring 32, bottom ring 33 and support ring 31 are all composed of an outer ring, an inner ring and a connecting rod connecting the outer ring and the inner ring, and the hollow part is the aforementioned vent 35.

[0049] Among them, the outer ring is connected to the major diameter of the transverse fold 11, the inner ring of the support ring 31 is tangent to the outer side of the support rod 34; the inner ring of the lifting ring 40 is passed through the support rod 34 and slides with the support rod 34; the inner rings of the top ring 32 and the bottom ring 33 are fixedly connected to the support rod 34 by welding, screwing or other means.

[0050] like Figure 4 As shown, based on the same inventive concept, this utility model embodiment provides a pleated filter bag dust removal unit, including multiple pleated filter bags as described above, as well as a tube sheet 60 and a drive assembly. The tube sheet 60 is provided with multiple mounting holes, each corresponding to a pleated filter bag. The bag body 10 passes through the mounting holes and connects to the tube sheet 60. The drive assembly is fixed on the upper side of the tube sheet 60, and its power output end is connected to the drive rod 51 to drive the drive rod 51 to rotate.

[0051] It should be noted that the tube sheet 60 is a crucial component of the baghouse dust collector, primarily serving to separate the clean air chamber from the filter chamber, fix the filter bag assembly, and act as a maintenance platform. The drive assembly is fixed to the upper side of the tube sheet 60, meaning it is located within the clean air chamber, effectively preventing corrosion from dust-laden gas and ensuring its service life.

[0052] The 60-inch panel is typically made of 4-6mm thick carbon steel plate (laser cutting process ensures hole accuracy), while some high-end models use 3-8mm stainless steel plates spliced ​​together.

[0053] The mounting holes are formed by laser cutting to create uniform diameter filter bag mounting holes, with the hole diameter precisely matching the filter bag diameter.

[0054] The beneficial effects of the pleated filter bag dust removal unit provided by this utility model are as follows: Compared with the prior art, the pleated filter bag dust removal unit provided by this utility model is equipped with the above-mentioned pleated filter bag, and the lifting ring 40 is located inside the bag body 10. Therefore, dust accumulation will not occur, the impact on the air circulation area is also small, and it is not easily corroded by dust-laden gas.

[0055] like Figure 4 As shown, in a specific embodiment of the pleated filter bag dust removal unit provided in this utility model, the driving assembly includes multiple driven wheels 52, a mounting frame 56, a driving wheel 54, a motor assembly 53, and several transmission components 55. The multiple driven wheels 52 correspond one-to-one with the pleated filter bags, and the driven wheels 52 are coaxially connected to the driving rod 51. The mounting frame 56 is located on the upper side of the tube sheet 60 and connected to the tube sheet 60. The driving rod 51 is rotatably engaged with the mounting frame 56. The driving wheel 54 is rotatably engaged with the mounting frame 56. The motor assembly 53 is fixedly installed, and its power output end is connected to the driving wheel 54 to drive the driving wheel 54 to rotate. Several transmission components 55 are sequentially connected to the driving wheel 54 and the driven wheels 52, connecting the driving wheel 54 and all the driven wheels 52 in series.

[0056] Specifically, in one embodiment of the pleated filter bag dust removal unit provided in this utility model, both the driving wheel 54 and the driven wheel 52 are sprockets, and the transmission component 55 is a chain.

[0057] It should be noted that the mounting bracket 56 is a frame structure, which effectively ensures the flow area. To reduce friction, bearings can be installed at the connection between the drive rod 51 and the mounting bracket 56, and at the connection between the drive wheel 54 and the mounting bracket 56. The motor assembly 53 is an assembly of the motor and the reducer.

[0058] The drive wheel 54 and all the driven wheels 52 are connected in pairs by a chain, so that the rotation of one drive wheel 54 can drive all the driven wheels 52 to rotate synchronously, thereby making all the lifting rings 40 rise and fall synchronously. In conjunction with the back-blowing mechanism, all the filter bags in a filter unit are cleaned synchronously.

[0059] In addition, the driving pulley 54 and the driven pulley 52 can also be synchronous pulleys, and the transmission component 55 is a synchronous belt.

[0060] Based on the same inventive concept, this utility model embodiment provides a bag filter dust collector, including several of the above-mentioned pleated filter bag dust collection units.

[0061] It should be noted that during actual operation, several pleated filter bag dust collection units alternately perform pulse cleaning operations without needing to stop the machine, effectively ensuring the continuity of filtration.

[0062] The beneficial effects of the bag filter provided by this utility model are as follows: Compared with the prior art, the bag filter provided by this utility model is equipped with the above-mentioned pleated filter bag dust collection unit, and the lifting ring 40 is located inside the bag body 10. Therefore, dust accumulation will not occur, the impact on the air circulation area is also small, and it is not easily corroded by dust-laden gas.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pleated filter bag, characterized in that, include: The bag body has multiple horizontal pleats along its length and is connected to the decorative plate at the top. An elastic band is provided on the side of the bag body and is connected to the transverse pleats; A support frame is disposed inside the bag body, with both ends connected to both ends of the bag body, for supporting the bag body; the support frame includes a plurality of support rods; the plurality of support rods are arranged at intervals around the bag body, and the support rods are disposed inside the bag body, with both ends respectively connected to both ends of the bag body; A lifting ring is disposed inside the bag body and connected to the middle part of the bag body; the support rod passes through the lifting ring and slides with the lifting ring. The drive rod has an external thread, passes through the lifting ring, and is screwed to the lifting ring to drive the lifting ring to rise and fall by rotation; the drive rod is used to connect to the power output end of the drive assembly fixed on the upper side of the tube sheet.

2. The pleated filter bag as described in claim 1, characterized in that, A screw sleeve is fixed on the lifting ring, and the drive rod passes through the screw sleeve and is screwed to the screw sleeve.

3. The pleated filter bag as described in claim 1, characterized in that, The support frame further includes a top ring and a bottom ring. The bottom ring is fixedly connected to the bottom of the bag body; the top ring is fixedly connected to the top of the bag body and is used to connect to the perforated plate; the lower end of the support rod is fixedly connected to the bottom ring, and the upper end of the support rod is fixedly connected to the top ring; the drive rod is rotatably engaged with the bottom ring and the top ring.

4. The pleated filter bag as described in claim 3, characterized in that, The support frame also includes multiple support rings, each of which corresponds to a transverse fold. The outer side of the support ring is connected to the transverse fold, and the inner side of the support ring is tangent to the support rod, thus having the freedom to slide along the support rod.

5. The pleated filter bag as described in claim 3, characterized in that, The top of the bag body is fixed with a mounting ring, and the side of the mounting ring is provided with an annular groove, which is used to engage with the flower plate; the top ring is connected to the mounting ring.

6. The pleated filter bag as described in claim 4, characterized in that, The lifting ring, the top ring, the bottom ring, and the support ring are all provided with several ventilation holes.

7. A pleated filter bag dust collection unit, characterized in that, The filter bags include multiple pleated filter bags as described in any one of claims 1-6, and further include: The tube sheet has multiple mounting holes, each corresponding to a pleated filter bag. The bag body passes through the mounting holes and connects to the tube sheet. The drive assembly is fixed to the upper side of the tube sheet, and its power output end is connected to the drive rod to drive the drive rod to rotate.

8. The pleated filter bag dust collection unit as described in claim 7, characterized in that, The driving component includes: Multiple driven wheels correspond one-to-one with the pleated filter bag, and the driven wheels are coaxially connected to the drive rod; The mounting bracket is located on the upper side of the tube sheet and connected to the tube sheet; the drive rod is rotatably engaged with the mounting bracket. The drive wheel rotates in conjunction with the mounting bracket; The motor assembly is fixedly installed, and its power output end is connected to the drive wheel to drive the drive wheel to rotate; Several transmission components are sequentially connected to the driving wheel and the driven wheel, connecting the driving wheel and all the driven wheels in series.

9. The pleated filter bag dust removal unit as described in claim 8, characterized in that, Both the driving wheel and the driven wheel are sprockets, and the transmission component is a chain.

10. A bag filter dust collector, characterized in that, It includes several pleated filter bag dust removal units as described in any one of claims 7-9.

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