Pleat fixing bandage, pleat type filter cartridge and dust removal equipment

Abstract

The invention relates to a pleat fixing bandage, a pleat type filter cartridge and dust removal equipment, and belongs to the technical field of filtering dust removal equipment. The pleat fixing bandage is applied to the pleat type filter cartridge to fix the pleat distance of a filter material and comprises a body part and a shaping part, the body part comprises at least one limiting section, and all the limiting sections are connected end to end to form an annular structure with a limiting space; the limiting section comprises a plurality of tooth parts connected in sequence, avoiding grooves are formed in the side, close to the limiting space, of the body part and between the adjacent tooth parts, and weight reducing grooves are formed in the side, away from the limiting space, of the body part and between the adjacent tooth parts; the shaping part is at least partially connected to the surface, away from the limiting space, of the body part so as to shape the body part. According to the pleat-fixed bandage, the pleat-type filter cartridge and the dust removal equipment provided by the invention, the problems that the bandage is easy to age and deform after being used for a long time and the filtering effect of the filter cartridge is finally reduced are at least solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal equipment, in particular to a binding belt, a pleated filter cartridge and dust removal equipment. BACKGROUND

[0002] In industrial production, as a key component of a filter device, the performance of a filter cartridge directly affects the filtering efficiency and quality. Common filter cartridges usually use pleated filter material, and the binding belt is connected and fixed with the filter material by means of fusion, adhesive and the like.

[0003] However, after a long time of use, especially under high-temperature, high-humidity and corrosive working conditions, the binding belt of the related art is prone to aging and deformation, which causes the connection part between the binding belt and the filter material to loosen and loosen, thereby affecting the fixation of the filter material and even the filtering performance of the filter cartridge. At the same time, the binding belt of the related art is fixed between the pleated structure of the filter material by means of adhesive, which is prone to failure under long-term use conditions, thereby causing the pleated structure of the filter material to be disordered and lose uniformity, affecting the filtering effect of the filter cartridge and being not conducive to cleaning.

[0004] Therefore, it is necessary to provide a new fixed-pleat binding belt, pleated filter cartridge and dust removal equipment to solve the above problems. SUMMARY

[0005] Therefore, it is necessary to provide a new fixed-pleat binding belt, pleated filter cartridge and dust removal equipment to solve the above problems.

[0006] The embodiment of the present application provides a fixed-pleat binding belt applied to a pleated filter cartridge to fix the pleat distance of filter material. The fixed-pleat binding belt comprises a body part and a shaping part. The body part comprises at least one limiting section. Each limiting section is connected end to end and forms a ring structure with a limiting space. The limiting section comprises a plurality of tooth parts connected in sequence. An avoiding groove is formed between adjacent tooth parts on the side of the body part close to the limiting space. A weight-reducing groove is formed between adjacent tooth parts on the side of the body part away from the limiting space. The shaping part is at least partially connected to the surface of the body part away from the limiting space to shape the body part.

[0007] In some embodiments, the two ends of the limiting section are respectively provided with a connecting plate, and the adjacent limiting sections are fixed through the connecting plate. An installation groove is formed on the side of the connecting plate close to the limiting space.

[0008] In some embodiments, the connecting plate comprises a first plate body and a second plate body, and the first plate body and the second plate body are respectively arranged at the two ends of the limiting section. The radial dimension of the surface of the first plate body close to the limiting space is not less than the radial dimension of the surface of the second plate body away from the limiting space.

[0009] In some embodiments, the creping binding band further comprises a fixing structure arranged in the mounting groove, and the fixing structure comprises a clamping piece having an open end and a connecting end, and a fixing part, the clamping piece is connected to the fixing part through the connecting end, the open end of the clamping piece is used to connect to the creping tooth of the filter material, and the fixing part is connected to the connecting plate.

[0010] In some embodiments, the length of the clamping piece along the direction from the open end to the connecting end is h1, the length of the fixing part in the ring direction of the ring structure is h2, and the maximum opening size of the open end is h3, and h1 is less than the creping depth of the filter material, and / or h2 is greater than the maximum distance between adjacent creping teeth of the filter material, and / or h3 is greater than twice the thickness of the creping tooth.

[0011] In some embodiments, the surface of the tooth part close to the limiting space at the connection of adjacent tooth parts is a circular arc surface.

[0012] In some embodiments, the shaping part comprises at least one arc-shaped circular strip, and at least part of the arc-shaped circular strips are arranged in sequence and spaced apart in the first direction; or, the shaping part comprises an arc-shaped piece, the arc-shaped piece is arranged at the middle position of the body part in the first direction, and the size of the arc-shaped piece in the first direction is not less than 40% of the size of the body part in the first direction; the first direction is perpendicular to the ring structure.

[0013] In some embodiments, the tooth height of each tooth part is L, and the creping depth of the filter material is H, and the ratio of L to H is configured to be between 0.2 and 0.8.

[0014] In some embodiments, the avoiding groove and the creping tooth of the filter material are configured to be one-to-one corresponding, the distance between the connecting end of the adjacent tooth part and the creping top of the filter material is configured to be b, 0.3mm≤b≤3.0mm; and / or, the minimum distance between the outer surface of the tooth part and the creping edge of the filter material is configured to be c, 0.1mm≤c≤3.0mm.

[0015] In some embodiments, along the first direction, a plurality of creping binding bands are sleeved on the filter material, and adjacent creping binding bands are arranged in the first direction; among the plurality of creping binding bands, two creping binding bands at both ends are respectively a first binding band and a second binding band, the distance between the first binding band and the end of the filter material away from the second binding band is D, the distance between the second binding band and the end of the filter material away from the first binding band is T, the ratio of D to the width size of the binding band in the first direction is 3 to 7, and the ratio of T to D is 1.1 to 2.

[0016] The embodiments of the present application also provide a creping filter cartridge comprising the creping binding band provided by any one of the preceding embodiments.

[0017] The embodiments of the present application also provide a dust removal equipment comprising the creping filter cartridge provided by any one of the preceding embodiments.

[0018] The fixed-pleat binding belt, the pleated filter cartridge and the dust removal equipment provided by the embodiments of the present application at least have the following beneficial effects:

[0019] By setting the body part to be shaped by the shaping part of the fixed-pleat binding belt to match the filter material, the body part comprises at least one limiting section, and each limiting section is connected end to end to form a ring structure with a limiting space. The limiting section comprises a plurality of tooth parts connected in sequence, and the plurality of tooth parts form an avoidance groove and a weight-reducing groove on the two sides of the body part close to and away from the limiting space, respectively. In this way, the avoidance groove can be used to accommodate the pleat teeth of the filter material and limit the pleat distance between the pleat teeth, so that the pleat teeth of the filter material can be kept in a state of mutual separation under the action of the fixed-pleat binding belt, thereby maintaining a good filtering area and stabilizing the filtering effect of the filter material.

[0020] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the embodiments of the present application can be implemented in accordance with the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0022] Figure 1 It is a schematic diagram of the planar structure of a filter material in the related art;

[0023] Figure 2 It is a schematic diagram of the planar structure of another filter material in the related art;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixed-pleat binding belt provided by an embodiment of the present application;

[0025] Figure 4 It is Figure 3 It is an enlarged view of part A of the fixed-pleat binding belt shown;

[0026] Figure 5 It is a schematic diagram of the structure of the fixed structure in the fixed-pleat binding belt provided by an embodiment of the present application;

[0027] Figure 6 It is a schematic diagram of the cooperation structure of one limiting section and the shaping part in the fixed-pleat binding belt provided by another embodiment of the present application;

[0028] Figure 7 It is Figure 6Enlarged view of part B of the crease fixing strap shown;

[0029] Figure 8 For Figure 1 Structural schematic view of the crease fixing strap shown from the perspective of the first direction;

[0030] Figure 9 For Figure 8 Enlarged view of part C of the crease fixing strap shown;

[0031] Figure 10 Structural schematic view of the crease fixing strap cooperating with the filter material provided by an embodiment of the present application;

[0032] Figure 11 For Figure 10 Enlarged view of part D of the crease fixing strap shown;

[0033] Figure 12 Structural schematic view of the crease filter cartridge provided by an embodiment of the present application.

[0034] In the drawings, 1000, crease filter cartridge; 200, filter material; 201, crease tooth; 202, sewing;

[0035] 100, crease fixing strap; 10, body part; 11, limiting section; 111, tooth part; 112, connecting plate; 1121, first plate body; 1122, second plate body; 20, shaping part; 21, arc-shaped round bar; 22, arc-shaped piece; 30, fixing structure; 31, clamping piece part; 311, opening end; 312, connecting end; 32, fixing part; 110, first strap; 120, second strap; 130, third strap;

[0036] 101, limiting space; 102, avoiding groove; 103, weight-reducing groove; 104, mounting groove; X, first direction. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application are described in detail below with reference to the drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, if the term "and / or" appears, "and / or" only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " herein generally represents that the front and rear associated objects have an "or" relationship. If the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0040] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, if the first feature appears "on" or "under" the second feature and the like, the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] It is to be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is to be noted that when a member is referred to as being "connected", it is not limited to the cases where the member is directly connected to the other element, but can also include cases where intervening elements are present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like as used herein are used for explanation only and not to limit the embodiments.

[0043] Please refer to Figures 1 to 12 The embodiment of the present application provides a crease fixing band 100 which is applied to a pleated filter cartridge 1000 to fix the crease distance of filter material 200. The crease fixing band 100 comprises a body part 10 and a shaping part 20. The body part 10 comprises at least one limiting section 11. Each limiting section 11 is connected end to end to form a ring structure with a limiting space 101. The limiting section 11 comprises a plurality of tooth parts 111 connected in sequence. On the side of the body part 10 close to the limiting space 101, a relief groove 102 is formed between adjacent tooth parts 111. On the side of the body part 10 away from the limiting space 101, a weight-reducing groove 103 is formed between adjacent tooth parts 111. The shaping part 20 is at least partially connected to the surface of the body part 10 away from the limiting space 101 to shape the body part 10.

[0044] The crease fixing band 100 is applied to the pleated filter cartridge 1000 to fix and protect the structure of the filter material 200. The crease fixing band 100 limits the structure of the filter material 200 (pleated structure), so that the structure of the filter material 200 can remain stable during the filtration process, and the risk of deformation of the filter material 200 under the action of negative pressure and airflow impact can be reduced.

[0045] In the related art, the fixed pleat binding 100 is usually arranged as a ring structure with a rectangular cross section, and the relative positions of the pleat teeth 201 are fixed by the structure of the inner wall of the fixed pleat binding 100 and the outer side of the pleat teeth 201 of the filter material 200. However, after long-term use of the fixed pleat binding 100, especially in high-temperature, high-humidity, or even corrosive working conditions, the connection between the fixed pleat binding 100 and the filter material 200 is relatively weak, which makes the fixed pleat binding 100 prone to aging and deformation, and the inner wall of the fixed pleat binding 100 gradually loses the limiting and fixing effect on the pleat teeth 201, and even the fixed pleat binding 100 falls off, so that the gap between adjacent pleat teeth 201 in the filter material 200 cannot be effectively fixed, thereby affecting the filtering performance of the pleated filter cartridge. At the same time, the fixing method between the fixed pleat binding 100 and the filter material 200 in the related art is usually adhesion or fusion, and such adhesion or fusion fixing method is also prone to failure during long-term use, which also affects the position limiting effect of the fixed pleat binding 100 on the pleat teeth 201 of the filter material 200, and causes the filtering performance of the pleated filter cartridge 1000 to decrease.

[0046] It should be noted that the filter material 200 mentioned in the present application is a pleated filter material which includes a plurality of pleat teeth 201 connected in sequence and forms a ring structure. The filter material 200 can be an integrally formed structure, or the filter material 200 can also be composed of multiple segments in a ring direction (similar to the ring structure of the fixed pleat binding 100 formed by a plurality of limiting segments 11) or a longitudinal (axial) direction. In the setting mode of the longitudinal splicing of the filter material 200, there is a high-low folding structure, which forms an inlaid seal with the joint, and disperses stress through staggered peak lapping to improve joint strength.

[0047] In the embodiment where the filter material 200 is composed of ring splicing, the sewing method of the filter material 200 includes butt sewing, overlock sewing, etc., and the number of the stitches 202 can be one or more. In the embodiment of butt sewing, the edges of the two pleat teeth 201 at the splicing position of the filter material 200 are arranged in parallel, and the stitch 202 is arranged between the two edges; in the overlock sewing mode, the edge of one of the two pleat teeth 201 at the splicing position of the filter material 200 is arranged as a "U" shaped structure, and the edge of the other pleat tooth 201 extends from the opening of the "U" shaped structure to form a "overlock" structure, and at this time, the stitch 202 is located in the "U" shaped structure.

[0048] In these embodiments of the present application, the filter material 200 preferably adopts an overlock structure to have a double sealing effect, and the stitch pitch of the stitch 202 is controlled to be between 2 mm and 5 mm; in the embodiment with multiple stitches 202, the distance between the multiple stitches 202 can also be controlled to be between 3 mm and 8 mm.

[0049] In the embodiments of the present application, the crease-fixing band 100 is applied to the pleated filter cartridge 1000 to fix the pleat pitch of the filter material 200, which means that the crease-fixing band 100 can be used to keep each pleat tooth 201 of the filter material 200 in an open state and keep the pleat pitch between each pleat tooth 201 constant by installing the crease-fixing band 100 on the (pleated) filter material 200, so as to keep the filtering area of the filter material 200 and reduce the risk of the pleat teeth 201 of the filter material 200 being deformed and overlapping together.

[0050] The crease-fixing band 100 comprises a body part 10 and a shaping part 20, wherein the body part 10 is the actual functional component of the crease-fixing band 100 and is used for actual filtering work; and the shaping part 20 is used to keep or adjust the shape of the body part 10, so that the structural shape of the body part 10 remains stable during work.

[0051] The body part 10 comprises at least one limiting section 11, and each limiting section 11 is connected end to end to form a ring structure with a limiting space 101, which means that the body part 10 can be an integrated structure formed by one limiting section 11 through self-bending, or the body part 10 can also be a spliced structure formed by multiple limiting sections 11 through self-bending and end-to-end connection. The above two cases can be freely selected according to the size of the crease-fixing band 100.

[0052] The ring structure refers to a closed structure arranged along a ring track, and the limiting space 101 is a space formed around the ring structure. It can be understood that in the embodiments of the present application, the ring structure of the body part 10 should also include two open ends (not numbered), and both of the two open ends communicate with the limiting space 101, so that when the crease-fixing band 100 is connected with the filter material 200, the crease-fixing band 100 can be sleeved on the outer wall surface of the filter material 200 along the direction in which the two open ends are oppositely arranged.

[0053] The limiting section 11 comprises multiple tooth parts 111 connected in sequence, and on the side of the body part 10 close to the limiting space 101, an avoidance groove 102 is formed between adjacent tooth parts 111, and on the side of the body part 10 away from the limiting space 101, a weight-reducing groove 103 is formed between adjacent tooth parts 111. That is, in each limiting section 11, the tooth part 111 is a tooth-like structure protruding from the ring track into the limiting space 101 along the plane where the ring track is located, so as to adapt to the shape of the pleat tooth 201 of the filter material 200.

[0054] It can be understood that the avoidance groove 102 is formed in the limiting space 101, which is a space specifically used to accommodate the upper fold teeth 201 of the filter material 200. In this way, at least one fold tooth 201 of the filter material 200 is accommodated by the avoidance groove 102 to isolate this part of the fold tooth 201 from other fold teeth 201 in the circumferential direction, reduce the risk of deformation of the fold tooth 201 and contact with other fold teeth 201, and maximize the filtering area of the filter material 200.

[0055] The weight reduction groove 103 is formed on the side of the body part 10 away from the limiting space 101. On the one hand, the weight reduction groove 103 can reduce the self-weight of the body part 10 and reduce the material cost investment. On the other hand, after the folding band 100 is installed on the filter material 200, the setting of the weight reduction groove 103 is also beneficial to reduce the blocking effect of the body part 10 on the cleaning gas in the cleaning stage, improve the flow efficiency of the cleaning gas, and improve the cleaning effect.

[0056] In the embodiments of the present application, the body part 10 can be formed by at least one of pressure casting, welding, injection molding, etc. For example, in the embodiment in which the body part 10 is formed by injection molding + pressure casting, a long strip member in the shape of a rectangular long strip can be first formed by injection molding, and then the long strip member is reciprocally bent along the length direction by pressure casting to form a multi-tooth member having a plurality of tooth parts 111. Then, the multi-tooth member is bent to form a limiting section 11 to be connected with other limiting sections 11 (or the two ends are connected after bending) to form a body part 10.

[0057] At least part of the shaping part 20 is connected to the surface of the body part 10 away from the limiting space 101 to shape the body part 10, wherein the inner contour of the shaping part 20 is the same as the outer contour of the body part 10 away from the limiting space 101, and at the same time, the shaping part 20 can be connected to the end of at least part of the tooth part 111 away from the limiting space 101.

[0058] For example, in some embodiments, along the annular track of the annular structure of the body part 10, each limiting section 11 has a total of 20 tooth parts 111. At this time, the shaping part 20 can be connected to the end of each tooth part 111 on the outer surface of each limiting section 11 away from the limiting space 101, or the shaping part 20 can be connected to the outer surface of the tooth part 111 away from the limiting space 101 at intervals of one tooth part 111.

[0059] It should be noted that the shaping portion 20 can extend along an arc-shaped track or an annular track. Exemplarily, in the embodiment in which the body portion 10 is connected by a plurality of limiting segments 11 to form an annular structure, the number of the shaping portions 20 can be set to be multiple, and each shaping portion 20 is arranged on the surface of the adjacent limiting segment 11 connection away from the limiting space 101, so as to strengthen the structure of the body portion 10 and further improve the structural reliability of the pleated binding 100.

[0060] In some embodiments of the present application, the pleated binding 100 can be made by metal processing or by non-metal material injection molding and vulcanization, so as to strengthen the structural strength of the pleated binding 100 in the case of metal processing, and to improve the toughness of the pleated binding 100 and reduce the disassembly difficulty of the pleated binding 100 and the filter material 200 in the case of non-metal material injection molding and vulcanization.

[0061] In some embodiments, the body portion 10 and the shaping portion 20 in the pleated binding 100 can be formed by wrapping the silicon rubber vulcanization material outside the metal material, so as to make the pleated binding 100 have good mechanical processing performance and structural strength, and to maintain the stability of shape and mechanical properties in the complex working environment.

[0062] In some embodiments, the two ends of the limiting segment 11 are respectively provided with a connecting plate 112, and the adjacent limiting segments 11 are fixed through the connecting plate 112; and the mounting groove 104 is formed on the side of the connecting plate 112 close to the limiting space 101.

[0063] The two ends of the limiting segment 11 are respectively provided with a connecting plate 112, which means that the connecting plate 112 (not the tooth portion 111) formed along the arc-shaped track or the annular track is arranged at the two ends of each limiting segment 11 along the arc-shaped track or the annular track. At this time, when a plurality of limiting segments 11 are connected in sequence (or a limiting segment 11 connects its own head and tail), the connecting effect can be achieved by overlapping the connecting plates 112.

[0064] In these embodiments of the present application, the connecting mode of different connecting plates 112 can be but not limited to the detachable connection modes such as buckle connection, sliding groove connection, connecting piece (screw, bolt) connection, etc., so as to facilitate the disassembly of the pleated binding 100 when the pleated binding 100 or the pleated filter cartridge 1000 fails and needs to be repaired, and to improve the efficiency of fault maintenance or maintenance.

[0065] The mounting groove 104 is formed on the side of the connecting plate 112 close to the limiting space 101, which means that the mounting groove 104 is formed on the side close to the limiting space 101 after the connection of the two connecting plates 112 is completed.

[0066] That is, the overall forming track of the connecting plate 112 should be concentric with the annular track or the arc-shaped track, and the connecting plate 112 extends along the width direction of the fixed pleat band 100. At the same time, the connecting plate 112 is connected to the end of the tooth portion 111 away from the limiting space 101, so that the connecting plate 112 has sufficient space on the side close to the limiting space 101 to form the aforementioned mounting groove 104.

[0067] It can be understood that the mounting groove 104 is a space communicating with the limiting space 101, just like the avoidance groove 102. The avoidance groove 102 is used to accommodate at least one pleat tooth 201, and the mounting groove 104 can be used to accommodate the pleat tooth 201 in addition to the connection of the filter material 200 and the fixed pleat band 100. In this way, the part of the pleat tooth 201 (at least one) accommodated in the mounting groove 104 is connected with the body portion 10, so that the other pleat teeth 201 of the filter material 200 and the tooth portion 111 have a gap, thereby reducing the risk of dust accumulation at the contact position of the pleat tooth 201 and the tooth portion 111 when the pleated filter cartridge 1000 is performing the dust removal operation, and improving the dust removal and cleaning efficiency.

[0068] During the installation of the filter material 200 and the fixed pleat band 100, the aforementioned sewing position 202 of the filter material 200 can be placed in the mounting groove 104, so that the sewing position 202 of the filter material 200 does not participate in the filtration and dust removal, further reducing the risk of structural damage or reduced filtering effect of the filter material 200.

[0069] In some embodiments, the connecting plate 112 includes a first plate body 1121 and a second plate body 1122, and the first plate body 1121 and the second plate body 1122 are respectively arranged at two ends of the limiting section 11; the radial dimension of the surface of the first plate body 1121 close to the limiting space 101 is not less than the radial dimension of the surface of the second plate body 1122 away from the limiting space 101.

[0070] The connecting plate 112 includes a first plate body 1121 and a second plate body 1122, and the first plate body 1121 and the second plate body 1122 are respectively arranged at two ends of the limiting section 11, which means that the two connecting plates 112 arranged at the two ends of the limiting section 11 are respectively defined as the first plate body 1121 and the second plate body 1122.

[0071] The surface of the first plate body 1121 close to the limiting space 101 and the surface of the second plate body 1122 away from the limiting space 101 respectively refer to the inner surface of the first plate body 1121 (under the annular structure) and the outer surface of the second plate body 1122 (under the annular structure). In this way, the radial dimension of the surface of the first plate body 1121 close to the limiting space 101 is not less than the radial dimension of the surface of the second plate body 1122 away from the limiting space 101, which means that the radial dimension of the inner surface of the first plate body 1121 is not less than the radial dimension of the outer surface of the second plate body 1122, so as to reduce the risk of mutual interference between the first plate body 1121 and the second plate body 1122 when the limiting section 11 forms an annular structure.

[0072] That is, whether the limiting section 11 itself forms an annular structure or multiple limiting sections 11 form an annular structure, the connection between the first plate body 1121 and the second plate body 1122 is achieved, and since the radial dimension of the inner surface of the first plate body 1121 is not less than the radial dimension of the outer surface of the second plate body 1122, the risk of interference between the first plate body 1121 and the second plate body 1122 during connection is reduced, and the reliability is higher.

[0073] In some embodiments, the fixed-pleat binding 100 further comprises a fixing structure 30 arranged in the mounting groove 104 and comprising a clamping piece 31 having an open end 311 and a connecting end 312, and a fixing part 32, the clamping piece 31 being connected to the fixing part 32 through the connecting end 312, the open end 311 of the clamping piece 31 being used to connect to the pleat tooth 201 of the filter material 200, and the fixing part 32 being connected to the connecting plate 112.

[0074] The fixing structure 30 is used to fix the fixed-pleat binding 100 and the filter material 200. The fixing structure 30 arranged in the mounting groove 104 means that the fixing structure 30 fixes the fixed-pleat binding 100 and the filter material 200 in the mounting groove 104, so that a certain gap can be maintained between the fixed-pleat binding 100 and the pleat tooth 201 of the filter material 200 under normal working conditions, reducing the influence of the fixed-pleat binding 100 on the normal working of the filter material 200, and when the pleat tooth 201 of the filter material 200 has a deformation trend under external force, the fixed-pleat binding 100 can limit the shape of the filter material 200.

[0075] The clamping piece 31 has an open end 311 and a connecting end 312, which means that the clamping piece 31 is composed of two clamping pieces (not numbered) connected at one end and diverging outward at the other end, forming a letter “V” type structure. The connecting end 312 of the clamping piece 31 is connected to the fixing part 32 to form a whole with the fixing part 32, and the open end 311 is used to fix the pleat tooth 201 during the installation of the fixed-pleat binding 100 and the filter material 200.

[0076] The fixed part 32 can be block-shaped or plate-shaped. During the installation of the fixed-pleat binding 100 and the filter material 200, the fixed part 32 can be connected to the fixed-pleat binding 100 by being connected to the connecting plate 112.

[0077] It can be understood that the number of the installation grooves 104 is at least one, according to different arrangement modes of the body part 10 in the fixed-pleat binding 100 (i.e., formed by one or more limiting sections 11 connected end to end). Meanwhile, the number of the fixed structure 30 can be set to one regardless of the number of the installation grooves 104, so as to reduce the interference of the fixed structure 30 on the cleaning effect; or in some embodiments, the number of the fixed structure 30 can be set to match the number of the installation grooves 104, so as to strengthen the connection stability between the fixed-pleat binding 100 and the filter material 200.

[0078] The open end 311 of the clamping piece part 31 is used to be connected to the pleat teeth 201 of the filter material 200, i.e., in the installation groove 104, the pleat teeth 201 of the filter material 200 extend into the open end 311 of the clamping piece part 31 and are in contact with the clamping piece part 31. At this time, the clamping piece part 31 and one of the pleat teeth 201 of the filter material 200 can be fixed by welding, but are not limited to this, or can be detachably connected by a buckle connection or a connecting piece (screw, bolt) connection.

[0079] In some embodiments, the length dimension of the clamping piece part 31 along the direction from the open end 311 to the connecting end 312 is h1, the length dimension of the fixed part 32 in the circumferential arrangement direction of the ring-shaped structure is h2, and the maximum opening dimension of the open end 311 is h3. It is provided that h1 is less than the pleat depth of the filter material 200, and / or h2 is greater than the maximum distance between adjacent pleat teeth 201 of the filter material 200, and / or h3 is greater than twice the thickness of the pleat teeth 201.

[0080] The pleat depth of the filter material 200 refers to the length of each pleat tooth 201 extending outward from the circumference of the filter material 200. By setting h1 to be less than the pleat depth of the filter material 200, the risk of mutual interference of the clamping piece part 31 in the assembly process with the pleat teeth 201 is reduced, and the reliability of the structure of the fixed-pleat binding 100 is further improved.

[0081] By setting h2 to be greater than the maximum distance between adjacent pleat teeth 201 of the filter material 200, the fixed part 32 can at least contact two pleat teeth 201 in the circumferential arrangement direction of the ring-shaped structure when the fixed structure 30 is fixed to the filter material 200, so as to further improve the connection strength between the fixed structure 30 and the filter material 200 in the installation groove 104, and thus the reliability of the connection between the fixed-pleat binding 100 and the filter material 200 is improved.

[0082] By setting h3 to be greater than twice the thickness of the pleat 201, the resistance and difficulty of the pleat 201 when being put into the clamping piece part 31 are reduced, and the installation efficiency between the pleat binding 100 and the filter material 200 is further improved.

[0083] In some embodiments, the surface of the tooth part 111 near the limiting space 101 at the connection of adjacent tooth parts 111 is a circular arc surface.

[0084] After the pleat binding 100 is installed to the filter material 200, each tooth part 111 is used to extend into each adjacent pleat 201 of the filter material 200, at this time, the connection of the adjacent tooth parts 111 is the setting position corresponding to the top end of one pleat 201.

[0085] At this time, by setting the surface of the tooth part 111 (corresponding to the connection position of the adjacent tooth parts 111) near the limiting space 101 to be a circular arc surface, the positions in the body part 10 corresponding to each pleat 201 are circular arc surfaces, rather than structures with edges. In this way, the risk of damage to the filter material 200 caused by the pleat binding 100 during disassembly can be reduced.

[0086] In some embodiments of the present application, the surface of the tooth part 111 near the limiting space 101 at the connection of the adjacent tooth parts 111 can also be folded in a direction away from the limiting space 101. Similarly, this can also reduce the edges at this position, thereby reducing the risk of damage to the filter material 200 caused by the pleat binding 100 during disassembly.

[0087] In some embodiments, the shaping part 20 includes at least one arc-shaped circular strip 21, and at least part of the arc-shaped circular strips 21 are sequentially and spaced apart in the first direction X; or the shaping part 20 includes an arc-shaped sheet 22, the arc-shaped sheet 22 is arranged at the middle position of the body part 10 in the first direction X, and the size of the arc-shaped sheet 22 in the first direction X is not less than 40% of the size of the body part 10 in the first direction X; the first direction X is perpendicular to the ring structure.

[0088] The arc-shaped circular strip 21 refers to the arc-shaped structure with a circular cross section. It can be understood that the curvature of the arc-shaped circular strip 21 should match the curvature of the limiting section 11 of the body part 10, so that the arc-shaped circular strip 21 can be connected to the side of the body part 10 away from the limiting space 101, thereby improving the structural stability of the body part 10.

[0089] The structure of the arc-shaped circular strip 21 itself is relatively weak, but it is beneficial to production and processing. Therefore, in the embodiment in which the arc-shaped circular strip 21 is used as the shaping part 20, the number of arc-shaped circular strips 21 can be set to be multiple, and at least part of the arc-shaped circular strips 21 are sequentially and spaced apart in the first direction X. The multiple arc-shaped circular strips 21 can be used together to shape the body part 10, and the reliability is better.

[0090] Alternatively, in some embodiments, the shaping portion 20 can also be configured to include the arc-shaped piece 22, which is an arc-shaped structure with a rectangular cross-section, so that the shaping portion 20 itself has good structural stability. At this time, the shaping portion 20 can be used to structure the body portion 10 by arranging the arc-shaped piece 22 at the middle position of the body portion 10 along the first direction X.

[0091] In some embodiments, the arc-shaped piece 22 can be configured to have a size in the first direction X that is not less than 40% of the size of the body portion 10 in the first direction X, and the first direction X is perpendicular to the annular structure.

[0092] By limiting the size of the arc-shaped piece 22 in the first direction X, the arc-shaped piece 22 can have a better shaping effect on the body portion 10, and the reliability is higher. For example, in some embodiments of the present application, the size of the arc-shaped piece 22 in the first direction X can be, but is not limited to, 45%, 50%, 55%, 60% or 70% of the size of the body portion 10 in the first direction X.

[0093] It can be understood that the arc-shaped round bar 21 and the arc-shaped piece 22 are both embodiments of the shaping portion 20 in an arc shape. In some embodiments of the present application, the number of arc-shaped round bars 21 or arc-shaped pieces 22 can be arranged on the annular track according to the structure of the body portion 10.

[0094] For example, in an embodiment in which the body portion 10 includes only one limiting section 11, the limiting section 11 is connected end to end after being bent, and the two connecting plates 112 at both ends of the plurality of tooth portions 111 in the limiting section 11 are connected after being overlapped. At this time, the arc-shaped round bar 21 or the arc-shaped piece 22 can be arranged on the side of the two connecting plates 112 away from the limiting space 101 to strengthen the structure of the body portion 10. Alternatively, in an embodiment in which the number of limiting sections 11 is two, the two limiting sections 11 form two mounting grooves 104. At this time, the fixing structure 30 can be arranged in any one of the two mounting grooves 104 (or both mounting grooves 104 are arranged at the same time) to connect the filter material 200 and the pleat binding 100 by using the fixing structure 30, and the arc-shaped round bar 21 or the arc-shaped piece 22 is arranged on one of the two mounting grooves 104 away from the limiting space 101.

[0095] It can be understood that in some embodiments of the present application, the shaping portion 20 can be configured as an integral structure, that is, the arc-shaped round bar 21 or the arc-shaped piece 22 is arranged in a ring shape along the annular track. At this time, a single arc-shaped round bar 21 or arc-shaped piece 22 can be used to fix the body portion 10 in the circumferential direction.

[0096] In some embodiments, the height of each tooth portion 111 is L, and the pleat depth of the filter material 200 is H, and the ratio of L to H is configured to be between 0.2 and 0.8.

[0097] The tooth height of each tooth portion 111 refers to the length dimension of each tooth portion 111 extending from the limiting space 101 of the outer contour of the body portion 10, and in the embodiments of the present application, the tooth height of the tooth portion 111 is defined as L.

[0098] The pleat depth of the filter material 200 refers to the length of each pleat tooth 201 extending outward from the circumference of the filter material 200, and in the embodiments of the present application, the pleat depth of the filter material 200 is defined as H.

[0099] By configuring the ratio of L to H to be between 0.2 and 0.8, the nesting depth of the nesting connection between the tooth portion 111 and the filter material 200 in this ratio range is appropriate, which enables the pleat tooth 201 to not be disengaged from the nesting cooperation with the tooth portion 111 after a certain shrinkage deformation, and also prevents excessive extrusion of the filter material 200.

[0100] Exemplarily, in the embodiments of the present application, the ratio of L to H can be but is not limited to 0.3, 0.5, or 0.7.

[0101] In some embodiments, the avoidance groove 102 and the pleat tooth 201 of the filter material 200 are configured in one-to-one correspondence, and the spacing between the connecting end of the adjacent tooth portion 111 and the pleat top of the filter material 200 is configured as b, then 0.3mm≤b≤3.0mm; and / or, the minimum spacing between the outer surface of the tooth portion 111 and the pleat edge of the filter material 200 is configured as c, then 0.1mm≤c≤3.0mm.

[0102] The tooth portion 111 and the pleat tooth 201 of the filter material 200 are configured in a one-to-one correspondence, that is, one pleat tooth 201 is arranged in one avoidance groove 102 (the mounting groove 104 can also be regarded as a special avoidance groove 102).

[0103] The pleat top of the filter material 200 refers to the top end of each pleat tooth 201 farthest from the central axis of the filter material 200, and in the embodiments of the present application, the spacing between the connecting end of the adjacent tooth portion 111 and the pleat top of the filter material 200 is configured as b, and 0.3mm≤b≤3.0mm. The value of b can be adjusted according to the relationship between the size of the filter material 200 and the size of the pleat binding 100, so that the tooth portion 111 does not come into contact with the pleat tooth 201 in the normal working state of the filter material 200, and when the pleat tooth 201 is deformed under the action of air flow or negative pressure, the tooth portion 111 can provide support for the pleat tooth 201 to keep it in an "unfolded" state.

[0104] Exemplarily, in the embodiments of the present application, the value of b can be but is not limited to 0.8mm, 1.5mm, 2.0mm, or 2.5mm.

[0105] Correspondingly, the value of c can also be adjusted according to the relationship between the size of the filter material 200 and the size of the crease binding belt 100, which will not be described here. Exemplarily, in the embodiments of the present application, the value of c can be set to 0.2 mm, 0.8 mm, 1.5 mm, 2.0 mm or 2.5 mm, but is not limited thereto.

[0106] In some embodiments, along the first direction X, the plurality of crease binding belts 100 are sleeved on the filter material 200, and adjacent crease binding belts 100 are arranged at intervals along the first direction X; among the plurality of crease binding belts 100, the two crease binding belts 100 located at the two ends are respectively the first binding belt 110 and the second binding belt 120, the distance between the first binding belt 110 and the end of the filter material 200 away from the second binding belt 120 is D, and the distance between the second binding belt 120 and the end of the filter material 200 away from the first binding belt 110 is T, then the ratio of D to the width dimension of the crease binding belt 100 in the first direction X is 3 to 7, and the ratio of T to D is 1.1 to 2.

[0107] The plurality of crease binding belts 100 are sleeved on the filter material 200, and adjacent crease binding belts 100 are arranged at intervals along the first direction X, which means that during the process of fixing the filter material 200 by using the crease binding belt 100, multiple crease binding belts 100 need to cooperate to fix the filter material 200 at various positions along the first direction X.

[0108] In the embodiments of the present application, the two crease binding belts 100 located at the two ends of the filter material 200 along the first direction X are defined as the first binding belt 110 and the second binding belt 120, and the plurality of crease binding belts 100 located between the first binding belt 110 and the second binding belt 120 are defined as the third binding belt 130.

[0109] It can be understood that the first binding belt 110 and the second binding belt 120 divide the filter material 200 along the first direction X into three sections, i.e. a head section: the section between the second binding belt 120 and the head of the filter material 200; a middle section: the section between the first binding belt 110 and the second binding belt 120; and a bottom section: the section between the first binding belt 110 and the bottom of the filter material 200.

[0110] In this way, the distance between the first binding belt 110 and the end of the filter material 200 away from the second binding belt 120 is D, which is the size of the bottom section in the first direction X; the distance between the second binding belt 120 and the end of the filter material 200 away from the first binding belt 110 is T, which is the size of the head section in the first direction X.

[0111] By setting the ratio of D to the width dimension of the binding belt in the first direction as 3 to 7, that is, the size of the bottom section in the first direction X is 3 to 7 times the width dimension of the binding belt in the first direction X, and the ratio of T to D is 1.1 to 2, the fixed folding binding belt 100 can be set according to the different sizes of the external force acting on the filter material 200 at different positions in the first direction X during operation, thereby facilitating the reduction of the number of fixed folding binding belts 100 set under the premise of ensuring the filtering efficiency of the filter material 200 during operation, and further improving the installation efficiency of the pleated filter cartridge 1000.

[0112] Specifically, in the embodiments of the present application, during the ash removal process of the pleated filter cartridge 1000, the bottom section needs to bear a larger blowing force than the head section, so the binding belt needs to be set more densely at the bottom section position to improve the structural strength of the filter material corresponding to the bottom section position, so that the bottom section of the filter material can also maintain a fixed pleat spacing when bearing a larger blowing force. Accordingly, since the head section position bears a smaller blowing force during the ash removal process, in order to save the number of fixed folding binding belts 100 and further increase the blowing ash removal effect of the head section position (the fixed folding binding belt 100 will hinder the blowing ash removal of the filter cartridge to a certain extent, and setting fewer fixed folding binding belts 100 can reduce the blowing hindrance), the fixed folding binding belt 100 at this position can be set with a larger spacing.

[0113] The first binding belt 110 and the second binding belt 120 in the middle section cooperate with the plurality of third binding belts 130 to divide into a plurality of sub-regions arranged in sequence along the first direction X. In the embodiments of the present application, the sizes of the plurality of sub-regions in the first direction X can be set to be the same, that is, the plurality of third binding belts 130 are arranged at equal intervals in the first direction X; or, in the middle section, the intervals of different sub-regions in the first direction X directed from the bottom section to the head section gradually change from close to sparse. The above two ways can be selected according to the blowing force of the pleated filter cartridge 1000 during the ash removal operation.

[0114] The embodiments of the present application also provide a pleated filter cartridge 1000, which comprises the fixed folding binding belt 100 provided in any of the preceding embodiments.

[0115] The embodiments of the present application also provide a dust removal equipment, which comprises the pleated filter cartridge 1000 provided in any of the preceding embodiments.

[0116] The technical features of the above-mentioned embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0117] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A pleated binding strap, applied to a pleated filter cartridge to fix the pleat spacing of the filter media, characterized in that, include: The main body includes at least one limiting segment, and each of the limiting segments is connected end to end to form a ring structure with a limiting space; the limiting segment includes a plurality of teeth connected in sequence, and on the side of the main body close to the limiting space, an avoidance groove is formed between adjacent teeth, and on the side of the main body away from the limiting space, a weight reduction groove is formed between adjacent teeth. A shaping part is at least partially connected to the surface of the body portion away from the limiting space to shape the body portion.

2. The fixed-pleat binding strap according to claim 1, characterized in that, Each end of the limiting segment is provided with a connecting plate, and adjacent limiting segments are fixed together by the connecting plates; An installation groove is formed on the side of the connecting plate near the limiting space.

3. The fixed-pleat binding strap according to claim 2, characterized in that, The connecting plate includes a first plate and a second plate, the first plate and the second plate being respectively disposed at both ends of the limiting segment; The radial dimension of the surface of the first plate near the limiting space is not less than the radial dimension of the surface of the second plate away from the limiting space.

4. The fixed-pleat binding strap according to claim 2, characterized in that, The fixed-pleat binding strap also includes: A fixing structure is disposed in the mounting groove and includes a clamping part having an open end and a connecting end, and a fixing part. The clamping part is connected to the fixing part through the connecting end. The open end of the clamping part is used to connect with the pleats of the filter material. The fixing part is connected to the connecting plate.

5. The fixed-pleat binding strap according to claim 4, characterized in that, The length of the clamping part along the direction from the opening end to the connecting end is h1, the length of the fixing part in the circumferential setting direction of the annular structure is h2, and the maximum opening size of the opening end is h3. Then: h1 is less than the pleat depth of the filter media, and / or h2 is greater than the maximum spacing between adjacent pleats in the filter media, and / or h3 is greater than twice the thickness of the pleats.

6. The fixed-pleat binding strap according to claim 1, characterized in that, At the connection between adjacent teeth, the surface of the teeth near the limiting space is an arc surface.

7. The fixed-pleat binding strap according to claim 1, characterized in that, The shaping part includes at least one arc-shaped strip, and at least some of the arc-shaped strips are arranged at intervals in a first direction; Alternatively, the shaping portion includes an arc-shaped piece, which is disposed at the middle position of the body portion along the first direction, and the dimension of the arc-shaped piece in the first direction is not less than 40% of the dimension of the body portion in the first direction; The first direction is perpendicular to the annular structure.

8. The fixed-pleat binding 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.

9. The fixed-pleat binding strap according to claim 1, 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 adjacent tooth and the top of the pleat of the filter media is configured as b, then 0.3mm≤b≤3.0mm; and / or, the minimum distance between the outer surface of the tooth and the edge of the pleat of the filter media is configured as c, then 0.1mm≤c≤3.0mm.

10. The fixed-pleat binding strap according to any one of claims 1 to 9, characterized in that, Along the first direction, a plurality of fixed-pleat straps are sleeved on the filter material, and adjacent fixed-pleat straps are spaced apart along the first direction; In the plurality of fixed-pleat straps, the two fixed-pleat 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 3 to 7, and the ratio of T to D is 1.1 to 2.

11. A pleated filter cartridge, characterized in that, Includes the fixed-pleat strap as described in any one of claims 1 to 10.

12. A dust removal device, characterized in that, Including the pleated filter cartridge as described in claim 11.

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