Filter cartridge and skeleton structure thereof

Abstract

The utility model discloses a filter cartridge and a framework structure thereof. The framework structure comprises a bag cage framework, a rhombic net, an upper connecting piece and a lower connecting piece, the bag cage framework comprises a plurality of axial steel bars which are equal in length and form a cylinder in a surrounding mode, the two ends of each axial steel bar are fixedly connected with the upper connecting piece and the lower connecting piece respectively, and the whole circle of rhombic net covers the circumferential face of the bag cage framework and is fixedly connected with the axial steel bars. The filter cartridge comprises a skeleton structure, a filter material, a top cover and a bottom cover; the top cover and the bottom cover are respectively locked on the end surfaces of the upper connecting piece and the lower connecting piece through screws; the filter material covers the peripheral surface of the rhombic net, and two ends of the filter material are respectively adhered to the top cover and the bottom cover. According to the utility model, the framework structure has better and stronger transverse and longitudinal impact resistance and higher connection strength of the top cover and the bottom cover on the premise of keeping ultrahigh aperture ratio, so that the filtering performance and the structural strength of the filter cartridge are improved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cartridges, in particular to a filter cartridge and a skeleton structure thereof. Background Art

[0002] Under the new environmental protection index requirements, the emission requirements of dust collectors have become more stringent. As a new application of bag dust removal, filter cartridges can maximize the filtration area in dust collectors in small spaces and effectively reduce emission concentrations.

[0003] The central tube structure of the existing dust collector filter cartridge is mainly divided into two categories, one is the diamond tube, and the other is the punched galvanized tube. The diamond tube has a higher opening rate (more than 80%), which can reduce the structural resistance of the filter cartridge after filtering; but in the process of production and processing, the technical difficulty of cutting and welding the edge of the diamond tube is relatively high. Once there is a lack of welding or leakage, there will be protruding steel thorns on the surface of the diamond tube, which will cause fatal damage to the filter material wrapped on the surface of the diamond tube. Due to its processing technology characteristics, the punched galvanized tube will not produce steel thorns on the surface, and the contact point with the filter material is more rounded, which can greatly reduce the friction damage between the filter material and the central tube, and the production and processing speed is fast; but the opening rate of the punched galvanized tube (30~60%) is much lower than that of the diamond tube. The low opening rate will cause greater filtering structural resistance, and the lateral impact resistance of the punched galvanized tube is not good. During the transportation and on-site installation of the filter cartridge, it is easy to deform, further causing the deviation of the verticality of the center of the filter cartridge. Ultimately, it affects the implementation and application effect of the filter cartridge in the dust collector.

[0004] In the existing related technologies, the skeleton structure of the filter cartridge cannot combine the respective advantages of the diamond tube and the punched galvanized tube, and cannot have both a high opening rate and better transverse and longitudinal impact resistance. At the same time, the top cover and the bottom cover of the existing filter cartridge are connected to the central tube structure and the filter material by gluing. The overall gravity of the filter cartridge and the impact force of the pulse cleaning airflow are entirely borne by the bonding force of the glue. There may be a risk of the top cover and the bottom cover falling off due to insufficient bonding force of the glue. In addition, factors such as the temperature and chemical composition of the operating conditions will aggravate the aging of the glue and further reduce the bonding force, resulting in insufficient end connection strength of the existing filter cartridge. Utility Model Content

[0005] The purpose of the utility model is to provide a filter cartridge and its skeleton structure, so that the skeleton structure has better and stronger transverse and longitudinal impact resistance and higher top cover and bottom cover connection strength while maintaining an ultra-high opening rate, thereby improving the filtering performance and structural strength of the filter cartridge at the same time.

[0006] In order to achieve the above object, one of the solutions of the utility model is:

[0007] A filter cartridge skeleton structure comprises a cage skeleton, a diamond mesh, an upper connecting piece and a lower connecting piece; the cage skeleton comprises a plurality of axial steel bars of equal length which are arranged in a cylindrical shape; the two ends of the axial steel bars are respectively fixedly connected to the upper connecting piece and the lower connecting piece; a full circle of diamond mesh covers the circumference of the cage skeleton and is fixedly connected to the axial steel bars.

[0008] The bag cage frame also includes circumferential steel bars connected end to end to form a circular ring, and the circumferential steel bars are fixedly connected to the inner side of the axial steel bars.

[0009] Preferably, in the length direction of the axial steel bars, a circumferential steel bar is arranged at a spacing of 200-400 mm.

[0010] Preferably, the axial steel bars and circumferential steel bars are made of carbon steel or stainless steel, and the surfaces are treated with high temperature resistant silicon coating or galvanizing.

[0011] The diamond mesh is made of metal, alloy, galvanized carbon steel, polyester, polyphenylene sulfide or polytetrafluoroethylene plastic.

[0012] The sides of the diamonds in the diamond mesh form an angle of 45° with the axial reinforcement.

[0013] The upper connecting piece and the lower connecting piece are both made of carbon steel or stainless steel.

[0014] The contact points between the axial reinforcement and the upper and lower connecting pieces, and between the diamond mesh and the axial reinforcement are all fixed by welding.

[0015] The second solution of the utility model is:

[0016] A filter cartridge comprises the skeleton structure, filter material, a top cover and a bottom cover; the top cover and the bottom cover are respectively screwed onto the end surfaces of the upper connecting member and the lower connecting member; the filter material is coated on the circumference of the diamond mesh, and its two ends are respectively bonded to the top cover and the bottom cover.

[0017] 3 to 8 first screws for locking the top cover are welded on the end surface of the upper connecting member, and 1 to 3 second screws for locking the bottom cover are welded on the end surface of the lower connecting member.

[0018] After adopting the above technical solution, the utility model has the following technical effects:

[0019] ①By setting up a bag cage frame to support and fix the diamond mesh, the problem of weak horizontal and vertical impact resistance of the diamond mesh as a whole is solved, so that the filter cartridge as a whole has higher strength to meet the need to maintain the center verticality during transportation, installation and application;

[0020] ② The bag cage skeleton is mainly composed of axial steel bars, and its opening rate is very high, which ensures that the skeleton structure has a high opening rate, so that the dust filtration load of the filter cartridge filter material is more evenly distributed, achieving higher filtration performance;

[0021] ③ The diamond mesh is separated between the bag cage frame and the filter material in the filter cartridge to prevent the filter material from directly contacting the bag cage frame. This can reduce the friction on the inner surface of the filter material when the filter cartridge shakes, thereby extending the service life of the filter material.

[0022] ④ In the filter cartridge of the utility model, the top cover and the bottom cover are respectively screwed to the end faces of the upper connecting piece and the lower connecting piece, so that the connection force of the top cover and the bottom cover can be converted from the glue bonding force of the traditional structure to the mechanical structure force of the screws. The glue only serves as a seal, and the connection strength of the top cover and the bottom cover is improved, and the risk of falling off is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the skeleton structure of a specific embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the head of the skeleton structure of a specific embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the tail portion of the skeleton structure of a specific embodiment of the utility model;

[0026] Figure 4 The three-dimensional filter cartridge of the specific embodiment of the utility model Figure 1 ;

[0027] Figure 5 The three-dimensional filter cartridge of the specific embodiment of the utility model Figure 2 ;

[0028] Description of Figure Numbers:

[0029] 1---Cage frame; 11---Axial reinforcement; 12---Circumferential reinforcement;

[0030] 2----Rhombus mesh;

[0031] 3----Upper connecting piece;

[0032] 4----Lower connecting piece;

[0033] 5----Filter material;

[0034] 6----Top cover;

[0035] 7----Bottom cover;

[0036] 8----First screw;

[0037] 9----The second screw. DETAILED DESCRIPTION

[0038] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention to be protected.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the embodiments of the present utility model, it should be understood that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only to simplify the description for the convenience of describing the embodiments of the present utility model, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present utility model.

[0043] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0044] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0047] In addition, the present invention provides examples of various specific processes and materials, but a person skilled in the art may be aware of the application of other processes and / or the use of other materials.

[0048] refer to Figures 1 to 3 As shown, the utility model discloses a skeleton structure of a filter cartridge, including a bag cage skeleton 1, a diamond mesh 2, an upper connecting piece 3 and a lower connecting piece 4;

[0049] The bag cage frame 1 includes a plurality of axial steel bars 11 of equal length formed into a cylindrical shape; the two ends of the axial steel bars 11 are fixedly connected to the upper connecting piece 3 and the lower connecting piece 4 respectively;

[0050] A full circle of diamond mesh 2 covers the circumference of the bag cage frame 1 and is fixedly connected to the axial steel bars 11 .

[0051] Specific examples of the above-mentioned skeleton structure are shown below.

[0052] The number of the above-mentioned axial steel bars 11 is 4 to 10, the length is 800 to 3200 mm, and the spacing between adjacent axial steel bars 11 is 30 to 80 mm; the diamond mesh 2 is cylindrical, with an inner diameter of 95.6 to 129.6 mm, a length of 798 to 3198 mm, a thickness of 0.5 to 0.8 mm, an opening rate of 90 to 95%, and a spacing between the welding points of the diamond mesh 2 and the axial steel bars 11 of 80 to 300 mm; the outer diameter of the upper connecting piece 3 is 130 to 160 mm, and the inner diameter is 84 to 114 mm; the outer diameter of the lower connecting piece 4 (i.e., the disc) is 96 to 132 mm, and the thickness is 1.0 to 2.5 mm.

[0053] The bag cage frame 1 also includes a circumferential steel bar 12 connected end to end to form a circular ring. The circumferential steel bar 12 is fixedly connected to the inner side of the axial steel bar 11 to support and reinforce the axial steel bar 11. The effect is particularly obvious when the length of the axial steel bar 11 is long.

[0054] Furthermore, when the axial steel bars 11 are relatively long, the spacing between adjacent circumferential steel bars 12 is preferably 100-350 mm; in addition, the outer diameter of the circumferential steel bars 12 is preferably 92-122 mm.

[0055] The axial steel bars 11 and the circumferential steel bars 12 are made of carbon steel or stainless steel, with a diameter of 1.8-3.8 mm, and are coated with high-temperature resistant silicon or galvanized on the surface.

[0056] The diamond mesh 2 is made of metal, alloy, galvanized carbon steel, polyester, polyphenylene sulfide, polytetrafluoroethylene plastic, etc., and its diamond size can be adjusted according to the number of pleats designed for the filter cartridge. In this embodiment, the diamond side of the diamond mesh 2 is at an angle of 45° with the axial steel bar 11.

[0057] The upper connecting member 3 and the lower connecting member 4 are both made of carbon steel or stainless steel.

[0058] The contact points between the axial reinforcement 11 and the upper connecting piece 3, the lower connecting piece 4, and the diamond mesh 2 and the axial reinforcement 11 are all fixed by welding, and the welding methods include resistance welding, spot welding, argon arc welding, etc.

[0059] refer to Figure 4 and Figure 5 As shown, the utility model discloses a filter cartridge, comprising the above-mentioned skeleton structure, as well as filter material 5, a top cover 6 and a bottom cover 7; the top cover 6 and the bottom cover 7 are respectively screwed to the end faces of the upper connecting member 3 and the lower connecting member 4; the filter material 5 is coated on the circumference of the diamond mesh 2, and its two ends are respectively bonded to the top cover 6 and the bottom cover 7.

[0060] In the above filter cartridge, 3 to 8 first screws 8 for locking the top cover 6 are welded on the end surface of the upper connecting member 3, and 1 to 3 second screws 9 for locking the bottom cover 7 are welded on the end surface of the lower connecting member 4.

[0061] According to experiments, the strength of the top cover 6 of the utility model to break and fall off is 8000~10000N, the tensile strength of the skeleton structure is greater than 8000N, and the compressive strength of the skeleton structure is greater than 4000N. At the same time, the tensile force on the filter cartridge is no longer borne by the glue between the top cover 6, the bottom cover 7 and the filter material 5, but is transferred to the skeleton structure. Since the bag cage skeleton 1 and the upper connecting piece 3 and the lower connecting piece 4 are all welded, the top cover 6 and the upper connecting piece 3, the bottom cover 7 and the lower connecting piece 4 are all screwed together, the strength is guaranteed, and the glue mainly plays a sealing role.

[0062] Through the above scheme, the utility model solves the problem of weak horizontal and vertical impact resistance of the diamond mesh 2 as a whole by setting a bag cage frame 1 to support and fix the diamond mesh 2, so that the filter cartridge as a whole has a higher strength to meet the demand for maintaining the central verticality during transportation, installation and application; secondly, the bag cage frame 1 is mainly composed of axial axial steel bars 11, and its opening rate is very high, thereby ensuring that the skeleton structure has a high opening rate, so that the dust filtration load of the filter cartridge filter material 5 is more evenly distributed, and a higher filtration performance is achieved; thirdly, the diamond mesh 2 is provided to support and fix the diamond mesh 2, so that the filter cartridge has a higher strength to meet the demand for maintaining the central verticality during transportation, installation and application; secondly, the bag cage frame 1 is mainly composed of axial axial steel bars 11, and its opening rate is very high, so as to ensure ... thirdly, the bag cage frame 1 is mainly composed of axial axial steel bars 11, and its opening rate is very high, so as to ensure that the skeleton structure has a high opening rate, The shaped net 2 is blocked between the bag cage frame 1 and the filter material 5 in the filter cartridge, avoiding the filter material 5 from directly contacting the bag cage frame 1, which can reduce the friction on the inner surface of the filter material 5 when the filter cartridge shakes, thereby extending the service life of the filter material; in the filter cartridge of the utility model, the top cover 6 and the bottom cover 7 are respectively screwed to the end faces of the upper connecting member 3 and the lower connecting member 4, so that the connection force of the top cover 6 and the bottom cover 7 can be converted from the glue bonding force of the traditional structure to the mechanical structure force of the screw, and the glue only serves as a seal. The connection strength of the top cover 6 and the bottom cover 7 is improved, and the risk of falling off is reduced.

[0063] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A skeleton structure of a filter cartridge, characterized in that: It includes a bag cage frame, a diamond net, an upper connecting piece and a lower connecting piece; The bag cage frame includes a plurality of axial steel bars of equal length formed into a cylindrical shape; two ends of the axial steel bars are fixedly connected to the upper connecting piece and the lower connecting piece respectively; A full circle of diamond mesh covers the circumference of the bag cage frame and is fixedly connected to the axial steel bars.

2. The skeleton structure of the filter cartridge according to claim 1, characterized in that: The bag cage frame also includes circumferential steel bars connected end to end to form a circular ring, and the circumferential steel bars are fixedly connected to the inner side of the axial steel bars.

3. The skeleton structure of the filter cartridge according to claim 2, characterized in that: In the length direction of the axial steel bars, a circumferential steel bar is arranged at intervals of 100-350 mm.

4. The skeleton structure of the filter cartridge according to claim 2, characterized in that: The axial steel bars and circumferential steel bars are made of carbon steel or stainless steel, and the surfaces are treated with high temperature resistant silicon coating or galvanizing.

5. The skeleton structure of the filter cartridge according to claim 1, characterized in that: The diamond mesh is made of metal, alloy, galvanized carbon steel, polyester, polyphenylene sulfide or polytetrafluoroethylene plastic.

6. The skeleton structure of the filter cartridge according to claim 1, characterized in that: The sides of the diamonds in the diamond mesh form an angle of 45° with the axial reinforcement.

7. The skeleton structure of the filter cartridge according to claim 1, characterized in that: The upper connecting piece and the lower connecting piece are both made of carbon steel or stainless steel.

8. The skeleton structure of the filter cartridge according to claim 1, characterized in that: The contact points between the axial reinforcement and the upper and lower connecting pieces, and between the diamond mesh and the axial reinforcement are all fixed by welding.

9. A filter cartridge, comprising the skeleton structure of the filter cartridge according to any one of claims 1 to 8, characterized in that: It also includes filter material, a top cover and a bottom cover; the top cover and the bottom cover are respectively screwed to the end surfaces of the upper connecting piece and the lower connecting piece; the filter material is coated on the peripheral surface of the diamond mesh, and its two ends are respectively bonded to the top cover and the bottom cover.

10. A filter cartridge according to claim 9, characterized in that: 3 to 8 first screws for locking the top cover are welded on the end surface of the upper connecting member, and 1 to 3 second screws for locking the bottom cover are welded on the end surface of the lower connecting member.

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