Folding filter cartridge, bandage and dust extraction device

Abstract

The application relates to a pleated filter cartridge, a binding belt and a dust removal device, and belongs to the technical field of filter dust removal devices. The binding belt is applied to the pleated filter cartridge and comprises a pleated structure member and a fixing structure member. The pleated structure member comprises a ring body and a plurality of tooth bodies connected to the inner side of the ring body. Along the ring direction of the ring body, the adjacent tooth bodies are arranged at intervals to form an avoiding groove for avoiding at least one pleat tooth of filter material. The fixing structure member is arranged on the pleated structure member and is used for connecting the pleated structure member and the filter material. The pleated filter cartridge, the binding belt and the dust removal device provided by the application at least solve the problem that the binding belt is prone to aging and deformation after long-time use, and finally leads to the decline of the filtering effect of the filter cartridge.

Description

Technical Field

[0001] This application relates to the field of filtration and dust removal equipment technology, and in particular to a pleated filter cartridge, a strapping belt, and a dust removal device. Background Technology

[0002] In industrial production, filter cartridges are key components of filtration devices, and their performance directly affects filtration efficiency and quality. Common filter cartridges typically use pleated filter media, with straps connected and fixed to the filter media through welding, adhesive bonding, or other methods.

[0003] However, after prolonged use, especially under high temperature, high humidity and corrosive working conditions, the straps of this technology are prone to aging and deformation, causing the connection between the straps and the filter media to loosen or come loose, which in turn affects the fixation of the filter media and even the filtration performance of the filter cartridge. At the same time, the straps of this technology are fixed to the pleated structure of the filter media by adhesive, which is prone to failure under long-term use, resulting in the pleated structure of the filter media becoming disordered and losing uniformity, affecting the filtration effect of the filter cartridge and making it difficult to clean.

[0004] Therefore, there is an urgent need to provide a new type of pleated filter cartridge, belt, and dust removal equipment to solve the above problems. Utility Model Content

[0005] Therefore, it is necessary to provide a new pleated filter cartridge, strapping, and dust removal equipment to address the problem that the strapping of related technologies is prone to aging and deformation after long-term use, which ultimately leads to a decrease in the filtration effect of the filter cartridge.

[0006] This application provides a strap for use with a pleated filter cartridge, which includes a pleated structure and a fixing structure. The pleated structure includes an annular body and a plurality of teeth connected to the inner side of the annular body. Adjacent teeth are spaced apart along the circumferential direction of the annular body to form a clearance groove, which is used to avoid at least one pleat of the filter media. The fixing structure is disposed on the pleated structure and is used to connect the pleated structure to the filter media.

[0007] In some embodiments, the tooth height of each tooth is L and the pleat depth of the filter media is H, then the ratio of L to H is configured to be between 0.2 and 0.8.

[0008] In some embodiments, at least a portion of the tooth body is inclined along a first direction, and the inclination angle θ is between -30° and 75°; the first direction intersects with the circumferential plane of the annular body.

[0009] In some embodiments, the tilt angle θ is between 15° and 60°.

[0010] In some embodiments, the tooth body includes two inclined surfaces, one end of which intersects and the other end is connected to an annular body; both inclined surfaces are configured to be spaced apart from the filter media.

[0011] In some embodiments, the clearance groove and the pleats of the filter media are configured to correspond one-to-one, and the distance between the connecting end of the two inclined surfaces and the top of the pleats of the filter media is configured as b, then 0.3mm≤b≤3.0mm; and / or, the minimum distance between the two inclined surfaces and the pleats of the filter media is configured as c, then 0.1mm≤c≤3.0mm.

[0012] In some embodiments, the fixed structural member and the pleated structural member are detachably connected.

[0013] In some embodiments, a plurality of straps are sleeved on the filter material along a first direction, and adjacent straps are spaced apart along the first direction; among the plurality of straps, the two straps located at both ends are a first strap and a second strap, the distance between the first strap and the end of the filter material away from the second strap is D, and the distance between the second strap and the end of the filter material away from the first strap is T. Then, the ratio of D to the width dimension of the strap in the first direction is 4 to 6, and the ratio of T to D is 1.1 to 2.

[0014] This application also provides a pleated filter cartridge, which includes the straps provided in any of the foregoing embodiments.

[0015] This application also provides a dust removal device, which includes a pleated filter cartridge as provided in any of the foregoing embodiments.

[0016] The pleated filter cartridge, belt, and dust removal equipment provided in the embodiments of this application offer at least the following beneficial effects:

[0017] By setting a pleated structure including an annular body and multiple teeth connected to the inside of the annular body, and setting adjacent teeth at intervals to form a clearance groove, at least one pleat of the filter media can be avoided by the clearance groove. That is, the clearance groove adapted to the pleat accommodates the pleat, so that each pleat can be kept separated from each other by the action of the binding strap. Thus, the filtration effect of the filter cartridge can be improved by keeping each pleat appropriately separated from each other during the filtration process.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of a strap provided in an embodiment of this application;

[0021] Figure 2 This is a three-dimensional structural diagram of a strap provided in another embodiment of this application;

[0022] Figure 3 A front view of a strap provided in an embodiment of this application;

[0023] Figure 4 A top view of a strap provided in an embodiment of this application;

[0024] Figure 5 for Figure 4 Enlarged view of part A of the strap shown;

[0025] Figure 6 A schematic diagram of the planar structure of a pleated filter cartridge provided in an embodiment of this application;

[0026] Figure 7 for Figure 6 The pleated filter cartridge shown is a cross-sectional view along line BB.

[0027] Figure 8 for Figure 7 Enlarged view of section C of the pleated filter cartridge shown;

[0028] Figure 9 This is a schematic diagram of the planar structure of a pleated filter cartridge provided in an embodiment of this application.

[0029] In the attached diagram, 1000 is the pleated filter cartridge; 200 is the filter media; and 201 is the pleat teeth.

[0030] 100. Strap; 10. Pleated structural component; 11. Ring-shaped body; 12. Tooth; 121. Inclined surface; 20. Fixing structural component; 21. Clamping part; 211. Open end; 212. Connecting end; 22. Fixing part; 101. Clearance groove; 102. Mounting groove; 103. First strap; 104. Second strap; 105. Third strap;

[0031] X: Circumferential direction; Y: First direction. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and 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 of this application.

[0034] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] Please refer to the following: Figures 1 to 9 This application provides a strap 100, which is applied to a pleated filter cartridge 1000 and includes a pleated structural member 10 and a fixing structural member 20. The pleated structural member 10 includes an annular body 11 and a plurality of teeth 12 connected to the inner side of the annular body 11. The teeth 12 are spaced apart along the circumferential direction X of the annular body 11 to form a clearance groove 101, which is used to avoid at least one pleated tooth 201 of the filter media 200. The fixing structural member 20 is disposed on the pleated structural member 10 and is used to connect the pleated structural member 10 to the filter media 200.

[0039] The binding strap 100 is used in the pleated filter cartridge 1000 to fix and protect the structure of the filter media 200. By binding the filter media 200 (pleated structure) with the binding strap 100, the structure of the filter media 200 can be kept stable during the filtration process, reducing the risk of deformation of the pleats 201 of the filter media 200 under the action of negative pressure and airflow impact.

[0040] In related technologies, the strap 100 is usually set as a ring structure with a rectangular cross-section. The relative position of each pleat 201 is fixed by the structure of the inner wall of the strap 100 and the outer side of the filter material 200. With prolonged use, especially under high temperature, high humidity, or even corrosive conditions, the connection between the strap 100 and the filter media 200 is relatively weak. This makes the strap 100 prone to aging and deformation, which in turn causes the inner wall of the strap 100 to gradually lose its limiting and fixing effect on the pleats 201, and even the strap 100 to fall off. This makes it impossible to effectively fix the gap between adjacent pleats 201 in the filter media 200, thus affecting the filtration performance of the pleated filter cartridge. At the same time, the fixing method between the strap 100 and the filter media 200 in related technologies is usually adhesive or fusion. Such adhesive or fusion fixing methods are also prone to failure during long-term use, which will also affect the limiting effect of the strap 100 on the position of the pleats 201 in the filter media 200, resulting in a decrease in the filtration performance of the pleated filter cartridge.

[0041] In these embodiments of the present application, the strap 100 includes a pleated structure 10 and a fixing structure 20, wherein the pleated structure 10 is a component in the strap 100 specifically used to define the structure of the filter material 200, and the fixing structure 20 is a component used to fix the pleated structure 10 to the filter material 200.

[0042] The pleated structural member 10 includes an annular body 11 and a plurality of teeth 12 connected to the inner side of the annular body 11. The annular body 11 defines the outer contour of the pleated structural member 10 and serves as the base structure for the teeth 12. It is understood that the size of the annular body 11 needs to be designed to fit the filter media 200. Therefore, the annular structure of the annular body 11 can be adapted to the filter media 200. That is, when the cross-sectional shape of the filter media 200 (the shape formed by the plurality of pleats 201) is circular, the annular structure of the annular body 11 is circular; when the cross-sectional shape of the filter media 200 is elliptical, rectangular, or triangular, the annular structure of the annular body 11 should also be set as elliptical, rectangular, or triangular.

[0043] In these embodiments of the present application, only the case where the annular structure of the annular body 11 is circular and is fitted on the outside of the filter material 200 with a circular cross-sectional shape in the working state is described as an example. In this case, the outer diameter of the annular body 11 can be set to 1.01 to 1.1 times the outer contour of the filter material 200, so that the thickness of the annular body 11 can be designed according to the actual situation to improve the compatibility between different straps 100 and different filter materials 200.

[0044] For example, the outer diameter of the annular body 11 may be set to 1.02 times, 1.05 times, or 1.08 times the outer contour of the filter media 200.

[0045] The teeth 12 are disposed on the inner side of the annular body 11. When the strap 100 is in operation, by disposing the teeth 12 in the gap between the pleats 201 of the filter media 200, the teeth 12 can maintain the spacing between different pleats 201, so that the pleats 201 of the filter media 200 are always in an "expanded" state, thereby increasing the filtration area of ​​the filter media 200 and improving the filtration effect.

[0046] It is understood that in these embodiments of the present application, the shape of the tooth 12 can also be adapted to the shape of the pleats 201 of the filter media 200. For example, when the shape of the pleats 201 of the filter media 200 is a triangular prism, the tooth 12 can be set to be a triangular prism; when the shape of the pleats 201 of the filter media 200 is a rectangular prism or a trapezoidal prism, the tooth 12 can also be set to be the corresponding rectangular prism or trapezoidal prism.

[0047] It should be noted that in these embodiments of this application, both the toothed body 12 and the annular body 11 can be integrally formed from rigid materials to enhance the structural strength of the pleated structural component 10, thereby adapting to high temperature, high humidity, and even corrosive working conditions. The forming method of the pleated structural component 10 can be, but is not limited to, injection molding, casting, etc., and the rigid material can be, but is not limited to, plastic or metal. This arrangement enables the strap 100 to possess excellent performance and mechanical strength, maintaining stable shape and mechanical properties under complex working conditions, thereby ensuring the durability and service life of the strap 100 during long-term use, reducing strap 100 failure due to material aging or deformation, reducing the maintenance frequency and replacement cost of the filter cartridge, and providing strong support for the stable operation of the filter cartridge.

[0048] Furthermore, in these embodiments of this application, the annular body 11 can be an integral annular structure or an annular structure formed by splicing, that is, the annular body 11 can be formed by assembling multiple curved segment sub-ring bodies (not shown). In this case, during the forming process of the pleated structural component 10, different sub-ring bodies and the teeth 12 disposed thereon can be formed first, and then the multiple sub-ring bodies can be connected into the annular body 11 by means such as snap-fit, connecting parts (screws, bolts), welding, or bonding.

[0049] Along the circumferential direction X of the annular body 11, adjacent teeth 12 are spaced apart to form a clearance groove 101. This means that the teeth 12 are spaced apart sequentially on the inner side of the annular body 11, so that clearance grooves 101 for avoiding the folded teeth 201 are formed between adjacent teeth 12.

[0050] The clearance groove 101 is used to avoid at least one pleat 201 of the filter media 200. This means that after the strap 100 is installed to the filter media 200, the clearance groove 101 is used to match the position of at least one pleat 201 in the filter media 200. That is, at least one pleat 201 of the filter media 200 is set in the clearance groove 101 so as to separate the pleats 201 around the filter media 200 by using individual teeth 12 to form individual independent pleats 201 or groups of individual independent pleats 201, so that the filter media 200 can maintain structural stability under negative pressure conditions or when subjected to airflow impact.

[0051] Exemplary examples, in these embodiments of the present application, a clearance groove 101 may be provided to avoid one, two or three creases 201.

[0052] Of course, in addition to forming a clearance groove 101, an installation groove 102 can also be formed between adjacent teeth 12. The function of the installation groove 102 is to accommodate the fixing structure 20 so that the fixing structure 20 can connect the pleated structure 10 to the filter media 200.

[0053] During the installation of the strap 100 and the filter media 200, at least one pleat 201 will be located within the mounting groove 102. At this time, the pleated structure 10 and the filter media 200 can be connected within the mounting groove 102 via a fixing structure 20. A possible implementation is that the fixing structure 20 can first be installed within the mounting groove 102 using riveting (such as letter rivets, hollow rivets, blind rivets, thermoplastic riveting, etc.) or bolts, screws, and other connecting components. Simultaneously, during the installation of the strap 100 and the filter media 200, the fixing structure 20 is connected to at least one pleat 201 located within the mounting groove 102 using riveting (such as letter rivets, hollow rivets, blind rivets, thermoplastic riveting, etc.) or bolts, screws, and other connecting components.

[0054] In some embodiments of this application, the fixing structure 20 may include a clamping portion 21 having an open end 211 and a connecting end 212, and a fixing portion 22. The clamping portion 21 is connected to the fixing portion 22 via the connecting end 212, the open end 211 of the clamping portion 21 is used to connect with the pleats 201 of the filter material 200, and the fixing portion 22 is connected to the annular body 11.

[0055] The clip portion 21 is a structure in the fixing structure 20 used to fix the pleats 201 of the filter media 200. The clip portion 21 has an open end 211 and a connecting end 212. The clip portion 21 is a “V” shaped structure composed of two clips (not labeled) connected at one end and radiating outward at the other end. The connecting end 212 of the clip portion 21 is connected to the fixing part 22 to form an integral part with the fixing part 22. The open end 211 is used to fix the clip portion 100 to the pleats 201 during the installation of the strap 100 and the filter media 200.

[0056] The fixing part 22 can be block-shaped or plate-shaped. During the installation of the strap 100 and the filter material 200, the fixing part 22 can be connected to the fixing structure 20 and the pleated structure 10 by connecting with the annular body 11 at the position corresponding to the mounting groove 102.

[0057] In these embodiments of this application, by providing a fixing structure 20 in the mounting groove 102 and connecting the pleated structure 10 and the filter media 200 through the fixing structure 20, it is beneficial to reduce the contact between the strap 100 and the pleats 201 of the filter media 200 under normal working conditions. That is, the pleated structure 10 and the filter media 200 are only connected and contacted through the fixing structure 20 at the location where the mounting groove 102 is provided, which can reduce interference with the operation of the filter media 200 and further improve the working efficiency of the filter media 200.

[0058] In some embodiments of this application, the number of mounting slots 102 may be one, two or three, to accommodate filter media 200 of different sizes.

[0059] According to the strap 100 provided in the embodiments of this application, by setting the pleated structure 10 including an annular body 11 and a plurality of teeth 12 connected to the inner side of the annular body 11, and setting adjacent teeth 12 to be spaced apart to form a clearance groove 101, and at least one adjacent tooth 12 is spaced apart to form an installation groove 102, the clearance groove 101 and the installation groove 102 can be used to jointly avoid the pleats 201 of the filter material 200, that is, the clearance groove 101 adapted to the pleats 201 can accommodate the pleats 201, so that each pleat 201 can be kept in a state of separation from each other under the action of the strap 100, thereby keeping each pleat 201 in a state of separation from each other during the filtration process, which can improve the filtration effect of the filter cartridge.

[0060] In some embodiments, the clip portion 21 is detachably connected to the pleats 201 of the filter media 200, and / or the fixing portion 22 is detachably connected to the portion of the annular body 11 corresponding to the mounting groove 102.

[0061] The detachable connection between the clip portion 21 and the pleats 201 of the filter media 200 means that the clip portion 21 and the pleats 201 of the filter media 200 can be fixed by means of movable riveting, connecting parts (screws and bolts), etc., to improve the ease of loading and unloading between the clip portion 21 and the filter media 200. Correspondingly, in some embodiments, the fixing portion 22 and the part of the annular body 11 corresponding to the mounting groove 102 can also be detachably connected, which can also improve the ease of assembly between the fixing portion 22 and the annular body 11.

[0062] In some embodiments, the length of the clip portion 21 along the direction from the opening end 211 to the connecting end 212 is h1, the length of the fixing portion 22 in the circumferential setting direction X of the annular body 11 is h2, and the maximum opening size of the opening end 211 is h3. Then, h1 is less than the pleat depth of the filter material 200, and / or h2 is greater than the maximum spacing between adjacent pleats 201 in the filter material 200, and / or h3 is greater than twice the thickness of the pleats 201.

[0063] The pleat depth of the filter media 200 refers to the outward extension length of each pleat 201 around the periphery of the filter media 200. By setting h1 to be less than the pleat depth of the filter media 200, the risk of mutual interference between the clip portion 21 and the pleat 201 during assembly is reduced, further improving the reliability of the strap 100 structure.

[0064] By setting h2 to be greater than the maximum spacing between adjacent pleats 201 in the filter media 200, when the fixing structure 20 is fixed to the filter media 200, the fixing part 22 can contact at least two pleats 201 in the circumferential setting direction X of the annular body 11, so as to further improve the connection strength between the fixing structure 20 and the filter media 200 in the mounting groove 102, thereby improving the reliability of the connection between the strap 100 and the filter media 200.

[0065] By setting h3 to be more than twice the thickness of the pleats 201, the resistance and difficulty of inserting the pleats 201 into the clip section 21 are reduced, which helps to further improve the installation efficiency between the strap 100 and the filter media 200.

[0066] In some embodiments, the tooth height of each tooth 12 is L and the pleat depth of the filter media 200 is H, then the ratio of L to H is configured to be between 0.2 and 0.8.

[0067] The tooth height of each tooth 12 refers to the length of each tooth 12 extending inward from the inner wall of the annular body 11. In these embodiments of this application, the tooth height of the tooth 12 is defined as L.

[0068] The pleat depth of filter media 200 refers to the length of each pleat 201 extending outward from the periphery of filter media 200. In these embodiments of this application, the pleat depth of filter media 200 is defined as H.

[0069] By setting the ratio of L to H to be between 0.2 and 0.8, the nesting depth of the pleated structure 10 and the filter media 200 is appropriate within this ratio range, so that the pleated teeth 201 will not fall out of the nesting fit with the tooth body 12 after a certain shrinkage deformation, and the filter media 200 will not be excessively squeezed.

[0070] For example, in these embodiments of the present application, the ratio of L to H may be configured as 0.3, 0.5 or 0.7.

[0071] In some embodiments, at least a portion of the tooth body 12 is inclined along the first direction Y, and the inclination angle θ is between -30° and 75°; the first direction Y intersects with the circumferential plane of the annular body 11.

[0072] The first direction Y intersects with the circumferential plane of the annular body 11. The annular plane of the annular body 11 refers to the plane parallel to the annular direction X of the annular body 11. In this case, the first direction Y can be regarded as a direction parallel to the axial direction or the height direction of the filter material 200.

[0073] At least a portion of the teeth 12 are inclined along the first direction Y, with an inclination angle θ between -30° and 75°. This excludes 0°. Furthermore, when the strap 100 and filter media 200 are assembled, the teeth 12 are inclined at both ends along the axial direction (or height direction) of the filter media 200. This design reduces obstruction to the cleaning process when the operator cleans the filter media 200 and strap 100, thereby effectively improving dust removal efficiency and cleanliness.

[0074] For example, but not limited to, the tilt angle θ can be set to -15°, 15°, 30°, 45° or 65°.

[0075] Furthermore, in some embodiments, the tilt angle θ can be set between 15° and 60°. It should be noted that when the tilt angle θ is positive, it means that the tooth body 12 is arranged upward along the axial direction of the filter media 200, while when the tilt angle θ is negative, it means that the tooth body 12 is arranged downward along the axial direction of the filter media 200.

[0076] In these embodiments of the present application, by setting the tilt angle θ between 15° and 60°, that is, the tooth 12 (in the assembled state) tilts upward along the axial direction of the filter material 200 by 15° to 60°, the accumulation of dust in the pleated filter cartridge during operation can be further reduced, which is beneficial to reducing the difficulty of subsequent dust removal and cleaning operations.

[0077] For example, in these embodiments of this application, the tilt angle θ can be set to 25°, 40° or 50°.

[0078] In some embodiments, the tooth body 12 includes two inclined surfaces 121, one end of which intersects and the other end is connected to the annular body 11 respectively; both inclined surfaces 121 are configured to be spaced apart from the filter media 200.

[0079] The tooth body 12 includes two inclined surfaces 121. One end of the two inclined surfaces 121 intersects, and the other end is connected to the ring body 11 respectively. This means that the tooth body 12 and the ring body 11 together form a structure similar to a triangle. The two inclined surfaces 121 are the two waists of the triangle structure. The inner wall surface of the ring body 11 (if it is considered as a plane) can be regarded as the base wall of the triangle structure.

[0080] Both inclined surfaces 121 are configured to be spaced apart from the filter media 200. That is, when the strap 100 and the filter media 200 are assembled, the pleated structure 10 and the filter media 200 are spaced apart. This reduces the restriction of the strap 100 on the filter media 200, improves the filtration capacity and efficiency of the filter media 200, and also reduces the dead corners where dust can hide during the filtration process, which is beneficial for subsequent dust removal.

[0081] In some embodiments, the clearance groove 101 is configured to correspond one-to-one with the pleats 201 of the filter media 200, and the distance between the connecting end of the two inclined surfaces 121 and the top of the pleats of the filter media 200 is configured as b, then 0.3mm≤b≤3.0mm; and / or, the minimum distance between the two inclined surfaces 121 and the edges of the pleats of the filter media 200 is configured as c, then 0.1mm≤c≤3.0mm.

[0082] The tooth body 12 and the pleats 201 of the filter media 200 are configured in a one-to-one correspondence, that is, one pleat 201 is disposed in a clearance groove 101 (the mounting groove 102 can also be regarded as a special clearance groove 101).

[0083] The apex of the pleat in the filter media 200 refers to the top of each pleat 201 furthest from the central axis of the filter media 200. In these embodiments of the present application, the distance between the connecting end of the two inclined surfaces 121 and the apex of the pleat in the filter media 200 is configured as b, where 0.3 mm ≤ b ≤ 3.0 mm. The value of b can be adjusted according to the relationship between the size of the filter media 200 and the size of the strap 100, so that the teeth 12 do not come into contact with the pleats 201 under normal working conditions of the filter media 200, while the teeth 12 can provide support for the pleats 201 when they are deformed under airflow or negative pressure, keeping them in an "expanded" state.

[0084] For example, in these embodiments of this application, the value of b can be set to 0.8mm, 1.5mm, 2.0mm or 2.5mm, but is not limited to.

[0085] Accordingly, the value of c can also be adjusted according to the relationship between the size of the filter media 200 and the size of the strap 100, which will not be elaborated here. For example, in these embodiments of this application, the value of c can be set to 0.2mm, 0.8mm, 1.5mm, 2.0mm or 2.5mm, but is not limited to.

[0086] In some embodiments, the fixed structure 20 is detachably connected to the pleated structure 10.

[0087] This refers to the fact that before the strap 100 and the filter media 200 are assembled, the fixing structure 20 and the pleated structure 10 can be connected in a detachable manner so that the pleated structure 10 and the filter media 200 can be connected to each other through the fixing structure 20.

[0088] For example, the detachable connection between the fixed structural member 20 and the pleated structural member 10 includes, but is not limited to, movable riveting (such as male and female rivets, hollow rivets, blind rivets, hot melt riveting, etc.), connector (screw, bolt) connection, snap-fit ​​connection, and sliding groove connection. This arrangement helps to improve the ease of assembly and disassembly between the fixed structural member 20 and the pleated structural member 10.

[0089] In some embodiments, a plurality of straps 100 are sleeved on the filter material 200 along the first direction Y, and adjacent straps 100 are spaced apart along the first direction Y; among the plurality of straps 100, the two straps 100 located at both ends are respectively the first strap 103 and the second strap 104, the distance between the first strap 103 and the end of the filter material 200 away from the second strap 104 is D, and the distance between the second strap 104 and the end of the filter material 200 away from the first strap 103 is T. Then the ratio of D to the width dimension of the strap in the first direction is 4 to 6, and the ratio of T to D is 1.1 to 2.

[0090] Multiple straps 100 are fitted onto the filter media 200, and adjacent straps 100 are spaced apart along the first direction Y. This means that in the process of fixing the filter media 200 with the straps 100, multiple straps 100 need to work together to fix the filter media 200 at various positions along the first direction Y.

[0091] In these embodiments of the present application, the two straps 100 located at both ends of the filter material 200 along the first direction Y are respectively defined as the first strap 103 and the second strap 104, and the plurality of straps 100 located between the first strap 103 and the second strap 104 are defined as the third strap 105.

[0092] It is understood that the first strap 103 and the second strap 104 divide the filter media 200 into three sections along the first direction Y: the head section: the section between the second strap 104 and the head of the filter media 200; the middle section: the section between the first strap 103 and the second strap 104; and the bottom section: the section between the first strap 103 and the bottom of the filter media 200.

[0093] In this way, the distance between the first strap 103 and the end of the filter material 200 away from the second strap 104 is D, which is the size of the bottom section in the first direction Y; the distance between the second strap 104 and the end of the filter material 200 away from the first strap 103 is T, which is the size of the head section in the first direction Y.

[0094] By setting the ratio of D to the width of the strap in the first direction to 4 to 6, that is, the dimension of the bottom section in the first direction Y is 4 to 6 times the width of the strap in the first direction Y, and the ratio of T to D to 1.1 to 2, the straps 100 can be set in a targeted manner according to the different magnitudes of external force affecting the filter media 200 at different positions along the first direction Y during operation. This helps to reduce the number of straps 100 while ensuring the filtration efficiency of the filter media 200 during operation, thereby reducing the installation time of the straps 100 and further improving the installation efficiency of the pleated filter cartridge 1000.

[0095] Specifically, in these embodiments of this application, during the cleaning process of the pleated filter cartridge 1000, since the bottom section needs to withstand a greater jetting force than the head section, the straps need to be arranged more densely at the bottom section to improve the structural strength of the filter media at the corresponding bottom section, so that the bottom section of the filter media can maintain a fixed pleat spacing even when subjected to a greater jetting force. Correspondingly, since the head section experiences a smaller jetting force during the cleaning process, in order to save on the number of straps 100 and further increase the jetting cleaning effect at the head section (the straps 100 can hinder the jetting cleaning of the filter cartridge to some extent, and setting fewer straps 100 can reduce jetting obstruction), the spacing of the straps 100 at this location can be set to be larger.

[0096] The middle section is divided into multiple sub-regions by the first binding strap 103 and the second binding strap 104, together with multiple third binding straps 105. In these embodiments of the present application, the multiple sub-regions can be set to have the same size in the first direction Y, that is, the multiple third binding straps 105 are arranged at equal intervals in the first direction Y; or, in the middle section, the spacing between different sub-regions in the first direction Y along the direction from the bottom section to the head section can gradually change from dense to sparse. The above two methods can be selected according to the blowing force of the pleated filter cartridge 1000 during the dust removal operation.

[0097] This application also provides a pleated filter cartridge 1000, which includes a strap 100 as provided in any of the foregoing embodiments.

[0098] This application also provides a dust removal device, which includes a pleated filter cartridge 1000 as provided in any of the foregoing embodiments.

[0099] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A binding strap applied to a pleated filter cartridge, characterized in that, include: A pleated structural member includes an annular body and a plurality of teeth connected to the inner side of the annular body. Adjacent teeth are spaced apart along the circumferential direction of the annular body to form a clearance groove, the clearance groove being used to avoid at least one pleat of the filter material. A fixing structural member is disposed on the pleated structural member and is used to connect the pleated structural member to the filter material.

2. The strap according to claim 1, characterized in that, The tooth height of each of the teeth is L, and the pleat depth of the filter material is H, then the ratio of L to H is configured to be between 0.2 and 0.

8.

3. The strap according to claim 1, characterized in that, At least a portion of the tooth body is inclined along a first direction, and the inclination angle θ is between -30° and 75°; The first direction intersects with the circumferential plane of the annular body.

4. The strap according to claim 3, characterized in that, The tilt angle θ is between 15° and 60°.

5. The strap according to claim 1, characterized in that, The tooth body includes two inclined surfaces, one end of which intersects and the other end is connected to the annular body respectively; Both inclined surfaces are configured to be spaced apart from the filter media.

6. The strap according to claim 5, characterized in that, The clearance groove is configured to correspond one-to-one with the pleats of the filter media, and the distance between the connecting end of the two inclined surfaces and the top of the pleats of the filter media is configured as b, then 0.3mm≤b≤3.0mm; and / or, the minimum distance between the two inclined surfaces and the pleats of the filter media is configured as c, then 0.1mm≤c≤3.0mm.

7. The strap according to claim 1, characterized in that, The fixed structural member and the pleated structural member are detachably connected.

8. The strap according to any one of claims 1 to 7, characterized in that, Along a first direction, a plurality of the straps are sleeved on the filter material, and adjacent straps are spaced apart along the first direction; In the plurality of straps, the two straps located at both ends are the first strap and the second strap, respectively. The distance between the first strap and the end of the filter material away from the second strap is D, and the distance between the second strap and the end of the filter material away from the first strap is T. Then, the ratio of D to the width dimension of the strap in the first direction is 4 to 6, and the ratio of T to D is 1.1 to 2.

9. A pleated filter cartridge, characterized in that, Including the straps as described in any one of claims 1 to 8.

10. A dust removal device, characterized in that, Includes the pleated filter cartridge as described in claim 9.

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