Filter cartridge having inner cage

Abstract

The present invention provides a filter cartridge having an inner cage, comprising cylindrical pleated filter media. An inner cage is arranged in the pleated filter media, both ends of the pleated filter media are provided with end caps, the two end caps are respectively connected and fixed to both ends of the inner cage, the inner cage is in the form of a mesh tube, at least two vertical reinforcing ribs are arranged on the inner wall of the inner cage, and the vertical reinforcing ribs are provided with mounting slots used to match a support frame of a dust collector. In the present invention, the provision of the vertical reinforcing ribs can significantly enhance the support strength of the inner cage, providing good support for the pleated filter media; and in addition, the mounting slots of the vertical reinforcing ribs can match the support frame of the dust collector, achieving a precise positioning effect, such that after long-term use, the filter cartridge can still maintain its shape and positional stability, thereby improving the use effect. During the mounting of the filter cartridge, the support frame of the dust collector is directly fitted and fixed to the mounting slots, thereby simplifying the operation, providing good adaptability, and making the filter cartridge suitable for various types of dust collectors.

Description

A filter cartridge with an internal skeleton Technical Field

[0001] This invention belongs to the field of environmental protection equipment, and specifically relates to a filter cartridge with an internal skeleton. Background Technology

[0002] Filter cartridges are key consumables used in dust collectors for filtration and dust removal. The dust collector contains a support frame on which the filter cartridges are mounted. Existing filter cartridges are generally cylindrical, with the dust collector's support frame inserted into the cartridge for fixation. However, these cartridges lack effective positioning mechanisms, making them prone to deformation and misalignment after prolonged use, thus affecting the dust collector's performance and lifespan. Furthermore, the inner and outer frames of the filter cartridges are often fixed with perforated metal plates. The perforated plates are in close contact with the filter paper, which not only affects the cleaning effect but also increases the risk of friction between the plates and the filter paper, reducing the cartridge's lifespan. Moreover, the metal frame and filter media are made of different materials, requiring disassembly and sorting for recycling, resulting in high recycling costs. Additionally, some dust collector manufacturers develop filter cartridges suitable for irregularly shaped cylindrical designs. Because the inner hole is irregularly shaped, the support frame is designed to fit this type of cartridge, meaning such equipment can only install specific cartridges, making it extremely inconvenient to use. Summary of the Invention

[0003] To overcome the shortcomings and problems of the existing technology, the present invention provides a filter cartridge with an internal skeleton, which can be adapted to a variety of dust collectors, has high adaptability, and can be stably fixed on the support frame of the dust collector to avoid deformation and displacement.

[0004] This invention is achieved through the following technical solution:

[0005] A filter cartridge with an internal skeleton includes a cylindrical folded paper filter material. The folded paper filter material has an internal skeleton inside. Both ends of the folded paper filter material are provided with end caps, which are respectively connected and fixed to both ends of the internal skeleton. The internal skeleton is in the shape of a mesh tube. The inner wall of the internal skeleton is provided with at least two reinforcing vertical ribs, and the reinforcing vertical ribs are provided with mounting grooves for matching with the dust collector support frame.

[0006] The mounting groove is U-shaped, with the groove opening facing the axis of the inner frame.

[0007] The reinforcing vertical ribs are provided in 2-5 sections and are not uniformly arranged on the inner wall of the inner frame.

[0008] The inner frame is provided with multiple horizontal and vertical ribs. The horizontal ribs are not of equal width and the spacing between them is also not equal. The vertical ribs are not of equal width and the spacing between them is also not equal.

[0009] The cross-sections of both the transverse and longitudinal stiffeners are trapezoidal in shape, narrower on the outside and wider on the inside.

[0010] The filter cartridge with an internal skeleton also includes conductive modules. Conductive modules are arranged at both ends of a reinforcing vertical rib, and the conductive modules are in contact with the paper filter material.

[0011] The conductive module includes a conductive block that contacts the paper filter material. The end of the reinforcing vertical rib is provided with an embedding hole, and the conductive block is embedded in the embedding hole. The end face of the reinforcing vertical rib is provided with a fixing hole that communicates with the embedding hole. The fixing hole is provided with a conductive bolt that is tightened to the conductive block, and the conductive bolt is connected to a conductive wire.

[0012] The end cap is provided with a positioning stop edge, which abuts against the side wall of the corresponding reinforcing vertical rib. The end cap is provided with a positioning point, which corresponds to a reinforcing vertical rib.

[0013] The end cap has an inner ring that matches the inner skeleton, and an outer ring that matches the dust collector. A glue-filling groove is provided between the inner ring and the outer ring. The end of the folded paper filter material is located in the glue-filling groove. The end cap is fixed to the folded paper filter material and the inner skeleton by filling the glue-filling groove with glue.

[0014] The origami filter media, inner skeleton, and end caps are all made of non-metallic materials.

[0015] The cylindrical body of the origami filter material is wound with a spiral winding rope, which is fixed to the origami filter material by a sol. The winding rope is made of non-metallic material.

[0016] The winding rope is provided in two parts, and the two winding ropes are intertwined.

[0017] This invention features reinforcing vertical ribs, which significantly enhance the support strength of the internal frame, providing excellent support for the folded filter media. Furthermore, its mounting groove matches the dust collector support frame, ensuring precise positioning and maintaining the filter cartridge's shape and position stability even after long-term use, thus improving performance. During filter cartridge installation, the dust collector support frame directly engages and is fixed in the mounting groove, simplifying operation and offering excellent adaptability to various types of dust collectors. Attached Figure Description

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is an exploded structural diagram of the components of the present invention;

[0020] Figure 3 is a three-dimensional structural diagram of the internal skeleton in this invention;

[0021] Figure 4 is an enlarged structural diagram of point A in Figure 3;

[0022] Figure 5 is a cross-sectional view of the conductive module in this invention;

[0023] Figure 6 is a cross-sectional view of the internal skeleton in this invention;

[0024] Figure 7 is a cross-sectional schematic diagram of the transverse ribs in this invention;

[0025] Figure 8 is a schematic diagram of the cooperation between the inner frame and the dust collector support frame in this invention;

[0026] Figure 9 is a schematic diagram of the end cap structure in this invention;

[0027] Figure 10 is a schematic diagram of the structure of various shaped end caps in this invention.

[0028] In the diagram: 1-Folded paper filter material, 2-Inner skeleton, 21-Reinforcing vertical rib, 211-Mounting groove, 212-Embedding hole, 213-Fixing hole, 22-Horizontal rib, 23-Vertical rib, 3-End cap, 31-Positioning flange, 32-Positioning point, 33-Inner ring, 34-Outer ring, 4-Wrapping rope, 5-Conductive module, 51-Conductive block, 52-Conductive bolt, 53-Conductive wiring, 6-Support frame. Detailed Implementation

[0029] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] As shown in Figures 1 and 2, a filter cartridge with an internal skeleton includes a cylindrical origami filter media 1. Air passes through the origami filter media 1, achieving a filtering effect. An internal skeleton 2 is provided inside the origami filter media 1, providing support. End caps 3 are provided at both ends of the origami filter media 1, and the end caps 3 are respectively connected and fixed to the two ends of the internal skeleton 2. The end caps 3 not only provide end support but also seal the ends. The origami filter media 1, the internal skeleton 2, and the end caps 3 are all made of non-metallic materials. Since no metal is used, it can be recycled directly without disassembly, reducing recycling difficulty and lowering recycling costs.

[0031] The cylindrical body of the origami filter media 1 is wound with a spiral rope 4 to fix its shape. The diameter of the spiral rope 4 is 2-4mm, which serves to fix the filter media without affecting its air permeability. The spiral rope 4 is fixed to the origami filter media 1 with a solvent adhesive. The spiral rope 4 is made of non-metallic material and can be a blend of PA, PE, and PTFE, so it does not need to be disassembled for recycling. Traditional filter cartridges usually use a porous metal frame for support, but during use, the origami filter media is prone to friction with the metal frame, leading to damage and affecting the service life of the filter cartridge. The spiral rope 4 effectively solves this problem. There are two spiral ropes 4, which are interlaced, making the shape of the origami filter media 1 more securely fixed.

[0032] As shown in Figures 3, 4, 5, 6, 7, and 8, the inner frame 2 is a mesh tube shape. The inner wall of the inner frame 2 has at least two reinforcing vertical ribs 21, each with a mounting groove 211 for matching the dust collector support frame 6. The dust collector support frame 6 cooperates with the mounting groove 211 to fix the filter cartridge, providing good positioning and ensuring the filter cartridge maintains its shape and position even after long-term use, resulting in better performance. Furthermore, the dust collector support frame 6 supports the reinforcing vertical ribs 21, thus supporting the inner frame 2, making the inner frame 2 more stable and providing better support for the folded paper filter material 1, resulting in a more stable overall filter cartridge structure. The mounting groove 211 is U-shaped, with its opening facing the axis of the inner frame 2. This structure facilitates the engagement of the mounting groove 211 with the dust collector support frame 6. Furthermore, during filter cartridge installation, the dust collector support frame 6 directly engages and is fixed to the mounting groove 211. The mounting groove 211 only requires a simple fit, offering good adaptability and suitability for various dust collectors. The reinforcing vertical ribs 21 are provided in 2-5 rows, and are not evenly distributed on the inner wall of the inner frame 2.

[0033] The inner frame 2 is provided with multiple horizontal ribs 22 and vertical ribs 23. The horizontal ribs 22 are not of equal width, and the spacing between them is also not equal. Similarly, the vertical ribs 23 are not of equal width, and the spacing between them is also not equal. The horizontal and vertical ribs 22 and 23 have various width specifications. Wider horizontal and vertical ribs 22 and 23 provide stronger support, while narrower ones provide supplementary support. This reduces the obstruction area and increases the ventilation area. Therefore, this structure ensures that the inner frame 2 has sufficient support strength, meeting the requirements for overall and local support strength while maximizing the ventilation area and minimizing the impact on the filtration area. The cross-sections of the horizontal ribs 22 and vertical ribs 23 are trapezoidal, narrower on the outside and wider on the inside. This structure reduces the backflow resistance during filter cleaning and enhances the cleaning effect.

[0034] The filter cartridge with an internal skeleton also includes conductive modules 5. Conductive modules 5 are arranged at both ends of a reinforcing vertical rib 21, and these modules contact the folded paper filter material 1. The conductive modules 5 are connected to the dust collector, thus conducting electricity to the dust on the folded paper filter material 1, removing static electricity from the dust, and reducing the risk of explosion, especially for explosive dust. The conductive module 5 includes a conductive block 51 that contacts the folded paper filter material 1. The end of the reinforcing vertical rib 21 has an embedding hole 212, into which the conductive block 51 is embedded for easy installation. The conductive block 51 is made of a non-metallic conductive material, such as conductive polymer or graphene, facilitating subsequent recycling. The end face of the reinforcing vertical rib 21 is provided with a fixing hole 213 that connects to the embedded hole 212. The fixing hole 213 is provided with a conductive bolt 52 that is tightened to the conductive block 51. The conductive bolt 52 is connected to a conductive wire 53. The conductive wire 53 is used to connect to the dust collector. The static electricity of the dust in the folded paper filter material 1 is discharged sequentially through the conductive block 51, the conductive bolt 52, and the conductive wire 53.

[0035] As shown in Figure 9 (in conjunction with Figures 1 and 2), the end cap 3 is provided with a positioning stop 31, which abuts against the side wall of the corresponding reinforcing vertical rib 21. During installation, this facilitates the positioning of the end cap 3 with the inner frame 2, preventing installation misalignment. The end cap 3 is provided with a positioning point 32, which corresponds to a reinforcing vertical rib 21. This structure facilitates installation alignment during production, allowing for rapid alignment and improving installation efficiency.

[0036] The end cap 3 has an inner ring 33 that matches the inner frame 2, and an outer ring 34 that matches the dust collector. A glue-filling groove 35 is provided between the inner ring 33 and the outer ring 34. The end of the folded paper filter material 1 is located within the glue-filling groove 35. The end cap 3 is fixed to the folded paper filter material 1 and the inner frame 2 by filling the glue-filling groove 35 with glue. During production, the two ends of the inner frame 2 and the folded paper filter material 1 are assembled into the glue-filling groove 35, and then glue is applied, thus fixing the two ends of the inner frame 2 and the folded paper filter material 1 to the end cap 3. To adapt to different types of dust collectors, the outer ring 34 of the end cap 3 can be circular, angular, or triangular, as shown in Figures 10(a), (b), and (c). Of course, it can also be other irregular shapes, making it more widely applicable.

[0037] The above embodiments are preferred implementations of the present invention and are not intended to limit the present invention. Any obvious substitutions are within the protection scope of the present invention without departing from the inventive concept.

Claims

1. A filter cartridge with an internal skeleton, comprising a cylindrical folded paper filter material (1), characterized in that: The folded paper filter material is provided with an inner skeleton (2), and both ends of the folded paper filter material are provided with end caps (3). The end caps are respectively connected and fixed to the two ends of the inner skeleton. The inner skeleton is in the shape of a mesh tube. The inner wall of the inner skeleton is provided with at least two reinforcing vertical ribs (21). The reinforcing vertical ribs are provided with mounting grooves (211) for matching with the dust collector support frame.

2. The filter cartridge with an internal skeleton according to claim 1, characterized in that: The mounting groove (211) is U-shaped, and the groove opening faces the axis of the inner frame (2).

3. The filter cartridge with an internal skeleton according to claim 2, characterized in that: The reinforcing vertical ribs (21) are provided in 2-5 sections and are not uniformly arranged on the inner wall of the inner frame (2).

4. The filter cartridge with an internal skeleton according to claim 1, characterized in that: The inner frame (2) is provided with multiple horizontal ribs (22) and vertical ribs (23). The horizontal ribs are not of equal width and the spacing between them is also not equal. The vertical ribs are not of equal width and the spacing between them is also not equal.

5. The filter cartridge with an internal skeleton according to claim 4, characterized in that: The cross-sections of the transverse stiffeners (22) and the longitudinal stiffeners (23) are both trapezoidal in shape, narrow on the outside and wide on the inside.

6. The filter cartridge with an internal skeleton according to claim 1, characterized in that: It also includes a conductive module (5), with conductive modules arranged at both ends of a reinforcing vertical rib (21), and the conductive modules are in contact with the paper filter material (1).

7. The filter cartridge with an internal skeleton according to claim 6, characterized in that: The conductive module (5) includes a conductive block (51) that contacts the paper filter material. The end of the reinforcing rib (21) is provided with an embedding hole (212). The conductive block is embedded in the embedding hole. The end face of the reinforcing rib is provided with a fixing hole (213) that communicates with the embedding hole. The fixing hole is provided with a conductive bolt (52) that is tightened to the conductive block. The conductive bolt is connected to a conductive wire (53).

8. The filter cartridge with an internal skeleton according to claim 1, characterized in that: The end cap (3) is provided with a positioning stop (31), which abuts against the side wall of the corresponding reinforcing vertical rib (21). The end cap is provided with a positioning point (32), which corresponds to a reinforcing vertical rib.

9. The filter cartridge with an internal skeleton according to claim 8, characterized in that: The end cap (3) is provided with an inner ring (33) that matches the inner frame (2), and the end cap is also provided with an outer ring (34) that matches the dust collector. A glue-filling groove (35) is provided between the inner ring and the outer ring. The end of the folded paper filter material (1) is located in the glue-filling groove. The end cap is fixed to the folded paper filter material and the inner frame by filling the glue-filling groove with glue.

10. The filter cartridge with an internal skeleton according to any one of claims 1-9, characterized in that: The origami filter material (1), inner skeleton (2) and end cap (3) are all made of non-metallic materials.

11. The filter cartridge with an internal skeleton according to claim 10, characterized in that: The cylindrical body of the origami filter material (1) is wound with a winding rope (4), which is spirally wound. The winding rope is fixed to the origami filter material by a sol. The winding rope is made of non-metallic material.

12. The filter cartridge with an internal skeleton according to claim 11, characterized in that: The winding rope (4) has two ropes, which are intertwined.

Images