High-temperature-resistant filter cartridge with two ends reinforced without glue

Abstract

The invention relates to the technical field of filter cartridges, and provides a double-end glue-free reinforced high-temperature-resistant filter cartridge which comprises a cartridge body, the top end and the bottom end of the cartridge body are connected with an upper end base and a lower end base through clamping heads in a clamping mode, and secondary fixing is conducted through binding belts. The interior of the cylinder body is provided with a reserved chamber for allowing filtered fluid to pass through, and stainless steel fibers are doped into an inner interlayer of the cylinder body; the stabilizing rod is used for stabilizing the filter cartridge, and the stabilizing rod is connected with the upper end base and the lower end base, so that when the filter cartridge is impacted by external fluid, the stability of the cartridge body can be kept, and the cartridge body does not swing or bend greatly. Through the stainless steel fibers and the cylinder body prepared with the high-temperature-resistant property, the filter cylinder can be kept intact in a high-temperature and high-humidity environment, the heat-resistant stainless steel fibers can avoid the problem of high-temperature shrinkage and can resist corrosion, the durability of the filter cylinder is greatly improved, and therefore the service life of the filter cylinder is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of filter cartridges, in particular to a high-temperature resistant filter cartridge with double-end glue-free reinforcement. Background Art

[0002] A filter cartridge is a filter element, usually used to filter gas, also known as an air filter cartridge. It is a surface filter element that uses tiny air-permeable structures formed on the surface of the filter material to block particulate matter in the gas.

[0003] The filter cloth and iron sheet at the upper and lower ends of the existing filter cartridge are fixed with glue. Under high temperature conditions, the glue is easily oxidized and falls off, resulting in poor durability of the filter cartridge, short service life of the filter cartridge, high maintenance and replacement frequency, and increased costs for filtration. Therefore, a high-temperature resistant filter cartridge with no glue reinforcement at both ends is needed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a high-temperature resistant filter cartridge with double-end glue-free reinforcement, which solves the problem that the filter cloth and iron sheet at the upper and lower ends of the existing filter cartridge are fixed with glue, and the glue is easily oxidized and falls off under high temperature conditions, resulting in poor durability of the filter cartridge.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A high temperature resistant filter cartridge with double-end glue-free reinforcement, comprising: The top and bottom ends of the cylinder are connected to the upper end base and the lower end base by a clamping joint, and are fixed by a tightening belt. The cylinder is provided with a retention chamber for passing the fluid after filtration, and the inner interlayer of the cylinder is mixed with stainless steel fiber. A stabilizing rod for stabilizing the filter cartridge, wherein the stabilizing rod is connected to the upper end base and the lower end base so that when the filter cartridge is impacted by an external fluid, the cartridge body can be kept stable without significant swinging and bending; The swivel is rotatably connected to the inner wall of the upper end base. The upper end base can further fix the clamping joint by rotating, and the stabilizing rod is fixed by a stabilizing ring embedded and fixed on the inner circumference.

[0006] Preferably, the clamping joint includes a connecting sleeve arranged at the top and bottom ends of the cylinder, the inner wall of the connecting sleeve is formed with an annular groove by stamping, and the outer wall is convex, the bottom outer wall of the upper end base and the top outer wall of the lower end base are both provided with annular protrusions corresponding to the annular groove, and the two connecting sleeves are respectively sleeved on the outer walls of the upper end base and the lower end base.

[0007] Preferably, the tightening belt includes a tightening gasket sleeved on the outer wall of the connecting sleeve, the inner periphery of the tightening gasket is provided with a groove corresponding to the raised outer wall of the connecting sleeve, the outer periphery of the tightening gasket is fixedly connected with a fixing belt, the tightening gasket is located at one end of the fixing belt, the other end of the fixing belt is fixedly connected with a fixing buckle, the outer periphery of the fixing belt is fixedly connected with a plurality of fixing hooks, and the fixing buckles are sleeved on the outer walls of the fixing hooks for buckling.

[0008] Preferably, the stabilizing rod comprises a plurality of rod bodies located inside the cylinder and a chassis slidably connected to the top side of the lower end base, the plurality of rod bodies are stacked in sequence from bottom to top, the bottom side periphery of the chassis is connected to the lower end base via a plurality of spring sheets, the top side of the chassis is connected to the bottommost rod body via two mutually engaging bite gaskets to prevent the rod body from rotating, and any two adjacent rod bodies and the bottommost rod body and one of the engaging gaskets are connected via a splicing assembly.

[0009] Preferably, the splicing assembly includes a plurality of slides respectively fixedly connected to the top side of the rod body and the top side of one of the bite gaskets, the bottom side of the rod body is slidably connected to the outer wall of the slide through a slide groove, and a limiting slide is provided at the bottom end of the outer wall of the rod body.

[0010] Preferably, the bottom end of the limiting slide is slidably connected to the front side of the slide, the top end of the limiting slide is slidably connected to the bottom end of the outer wall of the rod body, and the top side of the limiting slide is limited by a limiting head, and the rear side of the limiting head is connected to the rod body through a spring so as to be freely extended and retracted inside the rod body.

[0011] Preferably, two fixing rings are fixedly connected to the outer periphery of the rotating ring, and two limiting rings are fixedly connected to the top end of the connecting sleeve, and the inner part of the limiting ring is sleeved on the outer wall of the fixing ring.

[0012] Preferably, a sliding groove is provided on the outer wall of the rod body, a limiting groove is provided on the top of the sliding groove, a limiting protrusion is fixedly connected to the inner wall of the stabilizing ring, and the limiting protrusion slides in the sliding groove to the inside of the limiting groove in sequence.

[0013] Preferably, the connecting sleeves are made of stainless steel, and the two connecting sleeves are provided with gaps on the separated sides thereof to facilitate the expansion of the openings of the connecting sleeves.

[0014] Preferably, the cylinder is made of polyester or any other high temperature resistant material and is sewn together with a sewing portion.

[0015] Working principle: When the filter cartridge is produced and assembled, the connecting sleeve abuts against the ends of the upper end base and the lower end base through the opening, and uses the notch to expand to a certain extent, so that the inner annular groove of the connecting sleeve is stuck to the convex outer wall of the upper end base and the lower end base, thereby realizing the clamping and fixing. After the connecting sleeve is clamped, the clamping gasket is set around the outer wall of the connecting sleeve, and then the fixing belt is tightened and wrapped around the clamping gasket for several circles, and then the fixing buckle is put on the fixing hook at the corresponding position to fix the forming, and then the filter cartridge is installed in the designated filtering position. At this time, the sliding pieces on the multiple rod bodies and the sliding piece on one of the bite gaskets are aligned with the sliding groove on the bottom side of the rod body for sliding installation, and then the limiting slide slides down, so that the limiting slide synchronously connects the rod body and the sliding piece to achieve fixation, and after sliding, the limiting head retracted into the rod body will extend under the push of the compression reset spring. The spring sheet that rebounds lifts the structure including the rod body and the chassis on the top side, so that the limiting groove on the top rod body is subjected to an upward force, pressing against the limiting protrusion, increasing friction, making it difficult for the embedded ring connected with the limiting protrusion to cooperate with the swivel ring to rotate.

[0016] The present invention provides a high temperature resistant filter cartridge with double-end glue-free reinforcement. It has the following beneficial effects: 1. The present invention uses stainless steel fibers and a cylinder body with high temperature resistance to keep the filter cartridge intact in a high temperature and high humidity environment. The heat-resistant stainless steel fibers can avoid the problem of shrinkage at high temperatures and are corrosion-resistant, greatly improving the durability of the filter cartridge, thereby extending its service life. During the processing, the added stainless steel fibers can also be more easily processed into a wrinkled shape, and the glue-free clip-on design solves the problem of easy oxidation and shedding caused by traditional glue bonding.

[0017] 2. The present invention can maintain the stability of the filter cartridge without large swings and bends when the filter cartridge is impacted by external fluid through the stabilizing rod, and the modular split design can adapt to filter cartridges loaded with cartridges of different lengths, thereby enhancing its adaptability, expanding the scope of application, and improving its flexibility.

[0018] 3. The present invention has the function of disassembly and assembly, so when some parts of the filter cartridge are damaged and need maintenance, the corresponding parts can be disassembled and replaced, and it can adapt to the splicing of filter cartridges of different specifications, making the assembly more free and adapting to different environments and needs, greatly improving the flexibility of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 Schematic diagram of the structure of the upper end group of the present invention; Figure 3 It is a schematic structural diagram of the lower end group of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the cylinder of the present invention; Figure 5 It is a schematic diagram of the tightening structure of the fixing belt of the present invention; Figure 6 It is a schematic diagram of the unfolded structure of the fixing belt of the present invention; Figure 7 Schematic diagram of the internal structure of the upper end group of the present invention; Figure 8 It is a structural schematic diagram of the stabilizer bar of the present invention; Fig. 9 It is a schematic diagram of the connection structure of the chassis of the present invention; Fig.10 It is a structural schematic diagram of the rod body of the present invention; Fig.11 It is a schematic diagram of the connection structure of the slide of the present invention; Fig.12 It is a schematic diagram of the structure of the stabilizing ring and the rod body of the present invention; Fig.13 It is a schematic structural diagram of the stabilizing ring of the present invention.

[0020] Among them, 1. cylinder; 2. upper end base; 3. lower end base; 4. connecting sleeve; 5. fixing belt; 6. fixing hook; 7. fixing buckle; 8. tightening gasket; 9. swivel; 10. fixing ring; 11. limiting ring; 12. spring sheet; 13. chassis; 14. bite gasket; 15. rod body; 16. slide; 17. limiting slide; 18. limiting head; 19. stabilizing ring; 20. limiting protrusion. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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 protection of the present invention. Example

[0022] The embodiment of the present invention provides a high temperature resistant filter cartridge with double-end glue-free reinforcement, comprising: Please see attached Figure 1 -Attached Figure 3 , cylinder 1, the top and bottom ends of the cylinder 1 are connected with an upper end base 2 and a lower end base 3 in a clamping manner through a clamping joint, and are fixed twice by a tightening belt. A retention chamber is provided inside the cylinder 1 for passing the fluid after filtration. The internal interlayer of the cylinder 1 is mixed with stainless steel fibers. The cylinder 1 is sewn with polyester or any other high-temperature resistant material, and a sewing portion is left, which can keep the filter cartridge intact in a high-temperature and high-humidity environment and resist corrosion, greatly improving the durability of the filter cartridge, thereby extending its service life. During the processing, the added stainless steel fibers can also be more easily processed into pleated shapes; Please see attached Figure 2 -Attached Figure 4 The clamping joint is composed of a connecting sleeve 4 arranged at the top and bottom of the cylinder 1. The inner wall of the connecting sleeve 4 is formed with an annular groove by stamping, and the outer wall is convex. The bottom outer wall of the upper end base 2 and the top outer wall of the lower end base 3 are both provided with an annular convexity corresponding to the annular groove. The two connecting sleeves 4 are respectively sleeved on the outer walls of the upper end base 2 and the lower end base 3. The connecting sleeves 4 are made of stainless steel. The two connecting sleeves 4 are separated from each other and are provided with a notch to facilitate the expansion of the opening of the connecting sleeve 4. Specifically, the connecting sleeve 4 made of stainless steel bites the two ends of the cylinder 1 by pressing and rolling, and uses the extrusion of the metal after pressing and its own rigidity to fix it on the fiber layer of the cylinder 1 to achieve firm integration, so as to improve the stability of the connecting structure of the cylinder 1. When the connecting sleeve 4 is installed by abutting the ends of the upper end base 2 and the lower end base 3 at the opening, the notch at the end of the connecting sleeve 4 will expand to a certain extent under the state of force, so that the opening area of ​​the connecting sleeve 4 is enlarged, so that it can be sleeved on the outer wall of the upper end base 2 and the lower end base 3, and the inner annular groove of the connecting sleeve 4 can be stuck to the convex outer wall of the upper end base 2 and the lower end base 3, and fit with it. The notch of the connecting sleeve 4 cooperates with the opening to recover under the properties of the metal, so that the convex outer wall of the upper end base 2 and the lower end base 3 restricts the inner wall of the connecting sleeve 4, thereby achieving clamping and fixing.

[0023] Please see attached Figure 5 -Attached Figure 6The tightening belt is composed of a tightening gasket 8 sleeved on the outer wall of the connecting sleeve 4 and a fixing belt 5 fixedly connected to its outer periphery. The inner core interlayer of the fixing belt 5 is provided with an elastic band, so that the fixing belt 5 has a certain stretching and rebounding ability, so that it can be tightened after being wound several times. The inner periphery of the tightening gasket 8 is provided with a groove corresponding to the convex outer wall of the connecting sleeve 4. The tightening gasket 8 is located at one end of the fixing belt 5, and the other end of the fixing belt 5 is fixedly connected with a fixing buckle 7. The outer periphery of the fixing belt 5 is fixedly connected with a plurality of fixing hooks 6. The fixing buckles 7 are sleeved on the outer walls of the fixing hooks 6 for interlocking. The plurality of fixing hooks 6 can make the tightening belt adapt to the installation and fixation of filter cartridges with different circumferential specifications; Specifically, after the connecting sleeve 4 is clamped, the tightening gasket 8 is put around the outer wall of the connecting sleeve 4, and then the fixing belt 5 is tightly wrapped around the tightening gasket 8 for several turns to tighten the inner core cup of the elastic band, thereby stretching the fixing belt 5 and generating a restoring force. This force causes the wound fixing belt 5 to be tightened inward, so that the tightening gasket 8 located on the inside is subjected to pressure, and then the fixing buckle 7 is placed on the fixing hook 6 at the corresponding position to fix it into shape. The groove structure on the inner periphery of the tightening gasket 8 is used to cooperate with the outer wall of the connecting sleeve 4 for glue-free fixation, and the stability is further improved by applying pressure through tightening, so that the firmness of the double-end connection structure is further improved.

[0024] Please see attached Figure 8 -Attached Fig.10 , a stabilizing rod for stabilizing the filter cartridge, the stabilizing rod is connected to the upper end base 2 and the lower end base 3 so that when the filter cartridge is impacted by external fluid, the cylinder body 1 can be kept stable without swinging or bending. The stabilizing rod includes a plurality of rod bodies 15 located inside the cylinder body 1 and a chassis 13 slidably connected to the top side of the lower end base 3. The plurality of rod bodies 15 are stacked in sequence from bottom to top, and the outer periphery of the bottom side of the chassis 13 is connected to the lower end base 3 through a plurality of spring sheets 12, and the top side of the chassis 13 is connected to the bottommost rod body 15 through two mutually engaged engaging gaskets 14 to prevent the rod body 15 from rotating, and any two adjacent rod bodies 15 and the bottommost rod body 15 are connected to one of the engaging gaskets 14, and a plurality of slides 16 are respectively fixedly connected to the top side of the rod body 15 and the bottom side of the rod body 15 on the top side of one of the engaging gaskets 14 are slidably connected to the outer wall of the slide 16 through a slide groove; Specifically, the stabilizer bar can be adapted to filter cartridges loaded with cylinders 1 of different lengths through a modular split design, thereby enhancing its adaptability, a wider range of applications, and improving its flexibility. When assembling the stabilizer bar, the slides 16 on the multiple rod bodies 15 and the slide 16 on one of the bite pads 14 are aligned with the slide groove on the bottom side of the rod body 15, and are slidably installed to be installed as a whole, and subsequently the bite pad 14 on the bottom end of the rod body 15 is aligned with the bite pad 14 on the chassis 13 to bite, so that the connected rod body 15 is prevented from rotating arbitrarily through the mutual engagement of the two mutually adapted bite pads 14, so as to maintain stability.

[0025] Among them, the groove opened on the outer wall of the rod body 15 can effectively reduce the weight of the rod body 15 and maintain its firmness by adding a supporting vertical structure at the middle end. The interior of the rod body 15 is filled with a porous alloy core to maintain the overall firmness of the rod body 15 and further reduce its weight, making the filter cartridge lightweight and improving the high temperature resistance of the rod body 15.

[0026] Please see attached Fig.10 and attached Fig.11 A limit slide 17 is provided at the bottom end of the outer wall of the rod body 15, the bottom end of the limit slide 17 is slidably connected to the front side of the slide 16, the top end of the limit slide 17 is slidably connected to the bottom end of the outer wall of the rod body 15, and the top side of the limit slide 17 is limited by a limit head 18, and the rear side of the limit head 18 is connected to the rod body 15 through a spring so as to be freely extended and retracted inside the rod body 15; Specifically, after the splicing work is completed, the limit slide 17 can be slid down so that the limit slide 17 can be synchronously connected to the rod body 15 and the slide 16 to achieve fixation. After sliding, the limit head 18 retracted into the rod body 15 will extend out under the push of the compressed reset spring to limit the upward displacement of the limit slide 17, thereby achieving limited fixation. The limit head 18 can be pressed to compress the internal spring and retract into the rod body 15 to move the limit slide 17 upward and release the limit on the slide 16, so that the slide 16 can be detached from the rod body 15, so as to disassemble the rod body 15 as a whole, thereby realizing the replacement and maintenance of modular components.

[0027] Please see attached Figure 7 , Attachment Fig.12 and attached Fig.13, swivel 9, swivel 9 is rotatably connected to the inner wall of the upper end base 2, the upper end base 2 can be further fixed by rotating the card joint, and the stabilizing rod is fixed by using the stabilizing ring 19 embedded and fixed on the inner circumference. The stabilizing ring 19 is in a hollow state, which is convenient for the filtered fluid to pass through. The outer circumference of the swivel 9 is fixedly connected to two fixing rings 10, and the top of the top connecting sleeve 4 is fixedly connected to two limiting rings 11. The inner part of the limiting ring 11 is sleeved on the outer wall of the fixing ring 10. The outer wall of the rod body 15 is provided with a sliding groove, and the top of the sliding groove is provided with a limiting groove. The inner wall of the stabilizing ring 19 is fixedly connected to a limiting protrusion 20, and the limiting protrusion 20 slides in the sliding groove to the inside of the limiting groove in sequence; Specifically, after the installation of each part is completed, the stabilizer bar is pressed down, so that the bite gasket 14 at the bottom end is pressed down, and force is applied to the bottom chassis 13, so that the chassis 13 applies force to the spring sheet 12 to compress it, and the slide groove of the topmost rod body 15 slides with the limiting protrusion 20, so that the limiting groove and the limiting protrusion 20 are in the same horizontal plane. At this time, the rotating ring 9 is rotated synchronously with the stabilizing ring 19, and the fixing ring 10 connected to the top connecting sleeve 4 inside the upper end base 2 is inserted. The limiting ring 11 connected to the swivel 9 is inserted and fixed, and the limiting protrusion 20 slides into the limiting groove, thereby completing the dual fixation of the stabilizing rod and the cylinder 1, and the fixation of the assembly structure of the two parts of the filter cartridge is completed at one time and simultaneously. The stabilizing ring 19 can also be used for quick disassembly to facilitate maintenance and reduce the time for disassembly and maintenance. The rebounding spring sheet 12 lifts the structure including the rod body 15 and the chassis 13 on the top side, so that the limiting groove on the topmost rod body 15 is subjected to an upward force, pressing against the limiting protrusion 20, increasing friction, and making it difficult for the stabilizing ring 19 connected to the limiting protrusion 20 to cooperate with the swivel 9 to rotate.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant filter cartridge with double-end glue-free reinforcement, characterized in that: include: A cylinder (1), wherein the top and bottom ends of the cylinder (1) are connected to an upper end base (2) and a lower end base (3) in a clamping manner via a clamping joint, and are fixed for a second time using a tightening belt, a retention chamber is provided inside the cylinder (1) for allowing fluid to pass through after filtration, and stainless steel fibers are mixed into the internal interlayer of the cylinder (1); A stabilizing rod for stabilizing the filter cartridge, the stabilizing rod being connected to the upper end base (2) and the lower end base (3) so that when the filter cartridge is impacted by an external fluid, the cylinder body (1) can be kept stable and prevented from swinging or bending significantly; A swivel ring (9) is rotatably connected to the inner wall of the upper end base (2); the upper end base (2) can further fix the clamping joint by rotating, and the stabilizing rod can be fixed by using a stabilizing ring (19) embedded and fixed on the inner circumference.

2. A high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 1, characterized in that: The clamping joint comprises connecting sleeves (4) arranged at the top and bottom ends of the cylinder (1); the inner wall of the connecting sleeve (4) is formed with an annular groove by stamping, and the outer wall is convex; the bottom outer wall of the upper end base (2) and the top outer wall of the lower end base (3) are both provided with annular protrusions corresponding to the annular groove; the two connecting sleeves (4) are respectively sleeved on the outer walls of the upper end base (2) and the lower end base (3).

3. A high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 2, characterized in that: The tightening belt comprises a tightening gasket (8) sleeved on the outer wall of the connecting sleeve (4), the inner circumference of the tightening gasket (8) is provided with a groove corresponding to the convex outer wall of the connecting sleeve (4), the outer circumference of the tightening gasket (8) is fixedly connected to a fixing belt (5), the tightening gasket (8) is located at one end of the fixing belt (5), the other end of the fixing belt (5) is fixedly connected to a fixing buckle (7), the outer circumference of the fixing belt (5) is fixedly connected to a plurality of fixing hooks (6), and the fixing buckles (7) are sleeved on the outer walls of the fixing hooks (6) for interlocking.

4. The high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 1, characterized in that: The stabilizing rod comprises a plurality of rod bodies (15) located inside the cylinder (1) and a chassis (13) slidably connected to the top side of the lower end base (3). The plurality of rod bodies (15) are stacked in sequence from bottom to top. The bottom periphery of the chassis (13) is connected to the lower end base (3) via a plurality of spring sheets (12). The top side of the chassis (13) is connected to the bottommost rod body (15) via two mutually interlocking gaskets (14) to prevent the rod body (15) from rotating. Any two adjacent rod bodies (15) and the bottommost rod body (15) and one of the interlocking gaskets (14) are connected via a splicing assembly.

5. A high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 4, characterized in that: The splicing assembly comprises a plurality of slides (16) respectively fixedly connected to the top side of the rod body (15) and the top side of one of the bite gaskets (14); the bottom side of the rod body (15) is slidably connected to the outer wall of the slide (16) via a slide groove; and a limit slide (17) is provided at the bottom end of the outer wall of the rod body (15).

6. A high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 5, characterized in that: The bottom end of the limiting slide (17) is slidably connected to the front side of the slide (16), the top end of the limiting slide (17) is slidably connected to the bottom end of the outer wall of the rod body (15), and the top side of the limiting slide (17) is limited by a limiting head (18), and the rear side of the limiting head (18) is connected to the rod body (15) via a spring so as to be freely extended and retracted inside the rod body (15).

7. A high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 2, characterized in that: The outer periphery of the rotating ring (9) is fixedly connected to two fixing rings (10), and the top end of the connecting sleeve (4) is fixedly connected to two limiting rings (11), and the inside of the limiting ring (11) is sleeved on the outer wall of the fixing ring (10).

8. The high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 4, characterized in that: The outer wall of the rod body (15) is provided with a sliding groove, the top of the sliding groove is provided with a limiting groove, the inner wall of the stabilizing ring (19) is fixedly connected to a limiting protrusion (20), and the limiting protrusion (20) slides in the sliding groove to the inside of the limiting groove in sequence.

9. The high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 2, characterized in that: The connecting sleeves (4) are made of stainless steel, and a notch is provided on the separated sides of the two connecting sleeves (4) to facilitate expansion of the opening of the connecting sleeves (4).

10. The high temperature resistant filter cartridge with double-end glue-free reinforcement according to claim 1, characterized in that: The cylinder (1) is made of polyester or any other high temperature resistant material and is sewn together, with a sewn portion remaining.

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