A security filter with high interception capacity

Abstract

The application discloses a security filter with high interception capacity, which comprises a security filter body, a flower disc arranged in the middle of the security filter body, a plurality of filter core mounting holes formed in the flower disc, and a security filter core embedded on the filter core mounting hole; an inner detection support comprising an inner mounting piece connected in the filter core mounting hole, an inner movable framework arranged on the inner mounting piece and extending upwards and located on the inner side of the security filter core, and the inner movable framework being arranged in the interval of the security filter core; and an adjustable pressure structure comprising a pressing disc arranged on the top of all the security filter cores, a pressing piece movably arranged on the top of the pressing disc, an outer rotating piece arranged on the upper end of the pressing piece, and the bottom of the outer rotating piece extending to the bottom of the security filter body. The application can ensure that the insoluble index of the final output LiDFP refined liquid reaches the standard.

Description

Technical Field

[0001] This invention relates to an apparatus for preparing lithium difluorophosphate, and more particularly to a security filter with strong retention capacity. Background Technology

[0002] Lithium difluorophosphate (LiDFP) is a key additive in lithium-ion battery electrolytes, effectively improving high-temperature performance and cycle life, leading to increasing market demand. However, the insoluble matter content is a crucial parameter for evaluating the quality of LiDFP products. Excessive insoluble matter directly increases battery internal resistance and accelerates capacity decay, severely impacting overall battery performance and safety. Affected by raw material purity and fluctuations in reaction conditions, the insoluble matter content in products is often high, making it difficult to consistently meet market and customer requirements of ≤500ppm, resulting in low product qualification rates. This low insoluble matter content leads to a large number of reworked and even scrapped products. Currently, LiDFP is filtered before use to reduce its insoluble matter content.

[0003] Currently, lithium difluorophosphate requires a final filtration stage, namely a security filter, to remove the last insoluble substances in the solution. During the use of the security filter, the filter element needs to be replaced frequently to maintain filtration accuracy. However, existing security filter elements are generally fixed one by one with bolts or baffles. When multiple slots of filter elements need to be installed, operators need to install and tighten them one by one, which consumes a lot of time. If replacement is not timely, as the operating time increases, the filter element will gradually increase its operating resistance due to the trapping of contaminants. The resistance of the raw liquid passing through the filter element increases. During the operation of the high-pressure pump, a vacuum state will be created inside the security filter. The huge pressure difference will cause the filter element to flatten and deform. Deformed filter elements are more difficult to replace. Furthermore, since the filter elements are individually locked, it is difficult to backwash the entire filter element. It is necessary to open the entire tank for flushing.

[0004] Therefore, this case aims to provide a security filter with strong interception capacity, which not only provides internal support for the filter element to prevent deformation, but also makes the installation and disassembly of the filter element simpler, thus enabling quick installation and removal. This avoids the problem of not replacing the filter element for a long time due to difficult disassembly, and ensures that the insoluble matter index of the final output LiDFP refined liquid meets the standards. This is the research objective of this case. Summary of the Invention

[0005] This invention provides a security filter with strong interception capacity, which can effectively solve the above problems.

[0006] This invention is implemented as follows: A security filter with strong interception capability includes: The security filter body has a disc in the middle of its interior, and a plurality of filter element mounting holes are provided in the disc, on which security filter elements are embedded. An internal detection bracket includes an internal mounting component connected to a filter element mounting hole. The internal mounting component extends upward and is provided with an internal movable skeleton located inside the security filter element. The internal movable skeleton is spaced apart from the security filter element. An adjustable pressure structure is provided, wherein a rotating component is fixedly connected to the top of the security filter element. The adjustable pressure structure includes a clamping plate disposed on the top of all security filter elements, a clamping component movably disposed on the top of the clamping plate, and an external rotating component disposed at the upper end of the clamping component. The bottom of the external rotating component extends to the bottom of the security filter body. During filtration, the clamping component presses the clamping plate against the upper end of all security filter elements. During backwashing, the clamping component releases pressure and causes the clamping plate to rise. After the clamping plate rises, it is flush with the rotating component. After the external rotating component is introduced with backwash fluid, it rotates itself, and the clamping plate drives the rotating component to rotate, thereby causing all security filter elements to rotate.

[0007] As a further improvement, the security filter element includes a flow frame for fixing the security filter membrane, the bottom of the flow frame is snapped into the filter element mounting hole, the top of the flow frame is bent upward to form a vertical fixing frame, and the rotating member is fixed on the vertical fixing frame.

[0008] As a further improvement, the vertical fixing frame includes an inwardly recessed section integrally formed on the top of the flow frame, the upper end of the inwardly recessed section is connected to a vertical section, and a static mating ring is also connected to the vertical section, with mating ribs provided on the outer side of the static mating ring.

[0009] As a further improvement, the filter element mounting hole has a threaded structure, and the inner mounting component is a threaded cavity tube that is threadedly connected to the filter element mounting hole.

[0010] As a further improvement, the inner movable frame includes a tapered frame connected above the inner mounting member, the upper end of the tapered frame being connected to a fancy support frame, the top of the fancy support frame being connected to an inner connecting frame, and the inner connecting frame extending to the inner bottom of the inward section.

[0011] As a further improvement, the clamping plate includes a clamping plate with several clearance holes on its surface, and several clamping blocks that cooperate with the vertical fixing frame are provided at the lower end of the clamping plate. The clamping blocks are elastic.

[0012] As a further improvement, the clamping component includes a clamping rod fixing seat disposed on the outside of the security filter body, a clamping rod guide frame disposed at the upper end of the clamping rod fixing seat, a clamping rod threadedly connected to the clamping rod guide frame, a spring seat disposed on the clamping rod, the spring seat being embedded in the hollow cylinder, and the hollow cylinder being fixed on the outer rotating component.

[0013] As a further improvement, the outer rotating component includes an outer rotating disk fixed to the lower end of the hollow cylinder, and the bottom of the outer rotating disk is connected to a rotating pipe that passes through the pressure plate, and the rotating pipe is connected to the external recoil section.

[0014] As a further improvement, the rotating component is a gear component, and the outer rotating disk is fixedly mounted on the pressure plate as a circular disk. The inner and outer sides of the circular disk are provided with meshing teeth that mesh with the rotating component, and the meshing teeth mesh with the rotating component.

[0015] As a further improvement, the rotating pipe includes a lower rotating cavity pipe connected to the lower end of the outer rotating disk. The lower end of the lower rotating cavity pipe is provided with several sets of impellers. The lower end of the lower rotating cavity pipe is connected to the backflush pipe, and the backflush pipe is connected to the outer backflush section.

[0016] The beneficial effects of this invention are: In existing security filters, the filter elements are installed separately. As the raw liquid passes through the filter element, the resistance increases. During operation, the high-pressure pump creates a vacuum inside the security filter, and the huge pressure difference can cause the filter element to flatten and deform. Therefore, this invention uses an internal detection bracket to install an internal mounting component inside the filter element mounting hole, and an internal movable skeleton is set on the top of the internal mounting component. The internal movable skeleton supports the inside of the security filter element, so that when the filter element shrinks or tilts, it can be supported by the internal movable skeleton, thereby avoiding the filter element loss or damage caused by deformation, and keeping the filter element's retention capacity in a stable state.

[0017] The security filter element of the present invention is not a traditional filter element structure. It has a vertical fixing frame that extends upward from the traditional flow frame. The inward section of the vertical fixing frame can cooperate with the pressure plate, while the vertical section can provide an installation area for the rotating part. In order to provide sufficient support space when the pressure plate cooperates with the vertical section in the non-rotating state, a static fitting ring and a fitting rib are also provided on the vertical section.

[0018] When the internal movable frame supports the filter element, it provides support from the bottom to the top. Specifically, the internal movable frame of this invention is connected to the internal mounting component at the bottom via a tapered frame. In the middle section, a decorative support frame extends upward via the tapered frame. The decorative support frame has multiple outer protective edges that fit into the flow frame. At the top, to ensure the stability of the entire decorative support frame, it is connected to the inner recessed section of the filter element via a connecting frame, thereby ensuring the stability of the entire internal movable frame and thus ensuring the stability of the security filter element.

[0019] Deformed filter elements are more difficult to replace, and because each filter element is individually locked, backwashing the entire filter element is difficult, requiring the entire tank to be opened for rinsing. Therefore, this invention, through an adjustable pressure structure, can tightly fix the pressure plate with a clamping component during the filtration process of the security filter element, thereby ensuring the filtration retention effect. After the filtration stage, the clamping component can be released, but the pressure plate does not completely loosen the security filter element; instead, it slightly tightens it. As the clamping component rises, the top surface of the pressure plate becomes flush with the rotating component on the top surface of the security filter element, allowing the pressure plate to drive the rotating component to rotate, which in turn causes all the security filter elements to rotate. This allows all the security filter elements to be thrown out by the rotation during the backwashing stage, resulting in a cleaner filter element and maintaining the retention strength for insoluble substances.

[0020] In order to fix all the safety filter elements, the clamping plate of the present invention uses a clamping plate and several clamping blocks to press and fix the safety filter elements. The clamping process is divided into two stages. After the clamping blocks press the safety filter elements, the clamping components will continue to apply pressure, so that the elastic clamping blocks will continue to be squeezed, and continue to squeeze the safety filter elements, providing a certain rebound and limiting basis for the subsequent upward rotation.

[0021] Since the lithium difluorophosphate processed by this invention has a certain degree of corrosiveness, the clamping component in this invention adopts a manual locking and fixing method. That is, by tightening or unscrewing the clamping rod, the clamping rod moves on the clamping rod guide frame, so that the spring seat at the lower end of the clamping rod squeezes or moves away from the hollow cylinder on the outer rotating component, thereby allowing the outer rotating component to cooperate with or disconnect from the rotating component.

[0022] The outer rotating component has no self-power when rotating. In this invention, it is driven to rotate by the rotation of the rotating pipe, which in turn drives the outer rotating disk to rotate, and the outer rotating disk drives the rotating component to rotate. The rotating pipe will rotate when it is flushed into the outer backflow section.

[0023] The rotating component and the outer rotating disk are in an intermittently cooperating state, moving forward and backward. The outer rotating disk of the present invention is a circular disk fixedly installed on the pressure plate, and has meshing teeth on both the inner and outer sides, so that it can cooperate with the rotating component on both the inner and outer sides, thereby allowing both the inner and outer rings of the safety filter element to be driven at the same time, and allowing all the safety filter elements to be driven at the same time.

[0024] The rotating tube is driven by backwash water. Specifically, after the backwash water passes through the lower rotating chamber tube, it drives the impeller to rotate, which in turn causes the entire lower rotating chamber tube to rotate. Since the top of the lower rotating chamber tube is connected to the outer rotating disk, and the top of the outer rotating disk is engaged with the clamping component through a hollow cylinder, the lower rotating chamber tube will rotate with the spring seat of the clamping component as the fixed point, thereby ensuring the rotational accuracy and preventing the outer rotating component from detaching from the rotating component. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a front view structural diagram of the present invention.

[0027] Figure 2 This is a top view of the structure of the present invention.

[0028] Figure 3 This is the present invention. Figure 2 Cross-sectional view at point ZZ.

[0029] Figure 4 This is a schematic diagram of the adjustable pressure structure of the present invention.

[0030] Figure 5 This is the present invention. Figure 3 A magnified view of the Z region.

[0031] Figure 6 This is the present invention. Figure 3 A magnified view of the Y region.

[0032] In the picture: Security filter body 60, disc 61, filter element mounting hole 62, security filter element 63, rotating part 631, security filter membrane 632, flow frame 633, vertical fixing bracket 634, inner recess section 6341, vertical section 6342, static mating ring 6343, mating rib 6344, external backflushing section 64, inner detection bracket 70, inner mounting part 71, inner movable frame 72, conical frame 721, fancy support frame 722, inner connecting frame 723 Adjustable pressure structure 80, clamping plate 81, clamping plate 812, clamping block 813, clamping component 82, clamping rod fixing seat 821, clamping rod guide frame 822, clamping rod 823, spring seat 824, hollow cylinder 825, external rotating component 83, external rotating disk 831, circular disk 8311, meshing teeth 8312, rotating through pipe 832, lower rotating cavity pipe 8321, impeller 8322, backflush pipe 8323, shaft fixing rod 8324. Detailed Implementation

[0033] All embodiments of the present invention are intended to fall within the scope of protection of the present invention. 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 claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] Reference Figures 1-6As shown, a security filter with strong interception capacity includes: a security filter body 60, wherein a disc 61 is provided in the center of the interior of the security filter body 60, and a plurality of filter element mounting holes 62 are formed in the disc 61, and a security filter element 63 is embedded in the filter element mounting holes 62; an inner detection bracket 70, including an inner mounting member 71 connected in the filter element mounting holes 62, wherein an inner movable frame 72 is provided extending upward from the inner mounting member 71 and located inside the security filter element 63, and the inner movable frame 72 is spaced apart from the security filter element 63; and an adjustable pressure structure 80, wherein a rotating member 631 is fixedly connected to the top of the security filter element 63, and the adjustable pressure structure 80... The system includes a clamping plate 81 mounted on top of all security filter elements 63. A clamping member 82 is movably mounted on the top of the clamping plate 81. An external rotating member 83 is mounted on the upper end of the clamping member 82. The bottom of the external rotating member 83 extends to the bottom of the security filter body 60. During filtration, the clamping member 82 presses the clamping plate 81 against the upper end of all security filter elements 63. During backwashing, the clamping member 82 releases pressure and causes the clamping plate 81 to rise. After rising, the clamping plate 81 is flush with the rotating member 631. After the backwash fluid is introduced, the external rotating member 83 rotates itself, causing the clamping plate 81 to drive the rotating member 631 to rotate, thereby causing all security filter elements 63 to rotate.

[0036] In existing security filters, the filter elements are installed separately. As the raw liquid passes through the filter element, the resistance increases. During operation, the high-pressure pump creates a vacuum inside the security filter, and the huge pressure difference can cause the filter element to flatten and deform. Therefore, in this embodiment, an inner mounting bracket 70 is set, and an inner mounting part 71 is installed inside the filter element mounting hole 62. An inner movable skeleton 72 is set on the top of the inner mounting part 71. The inner movable skeleton 72 supports the inner side of the security filter element 63. Thus, when the filter element shrinks or tilts, it can be supported by the inner movable skeleton 72, thereby avoiding the filter element loss or damage caused by deformation, and keeping the filter element's retention capacity in a stable state.

[0037] The security filter element 63 of this invention is not a traditional filter element structure. Specifically, the security filter element 63 includes a flow frame 633 for fixing the security filter membrane 632. The bottom of the flow frame 633 is fastened in the filter element mounting hole 62, and the top of the flow frame 633 is bent upward to form a vertical fixing frame 634. The rotating member 631 is fixed on the vertical fixing frame 634. The vertical fixing frame 634 includes an inwardly recessed section 6341 integrally formed on the top of the flow frame 633. The upper end of the inwardly recessed section 6341 is connected to a vertical section 6342. A static mating ring 6343 is also connected to the upper part. A mating rib 6344 is provided on the outer side of the static mating ring 6343. A vertical fixing frame 634 extends upward from the traditional flow frame 633. The inward section 6341 of the vertical fixing frame 634 can cooperate with the pressure plate 81, while the vertical section 6342 can provide an installation area for the rotating part 631. In order to provide sufficient support space when the pressure plate 81 is not rotating and cooperates with the vertical section 6342, a static mating ring 6343 and a mating rib 6344 are also provided on the vertical section 6342.

[0038] When supporting the filter element, the inner movable frame 72 provides support from bottom to top. Specifically, in this embodiment, the inner movable frame 72 includes a conical frame 721 connected above the inner mounting member 71. The upper end of the conical frame 721 is connected to a decorative support frame 722, and the top of the decorative support frame 722 is connected to an inner connecting frame 723. The inner connecting frame 723 extends to the inner bottom of the inward section 6341. The inner movable frame 72 is connected to the inner mounting member 71 at the lower end via the conical frame 721. In the middle section, the decorative support frame 722 extends upward from the conical frame 721. The decorative support frame 722 has multiple outer protective edges that fit against the flow frame 633. At the top, to ensure the stability of the entire decorative support frame 722, it is connected to the inward section 6341 of the filter element via the connecting frame 723, thereby ensuring the stability of the entire inner movable frame 72 and thus ensuring the stability of the security filter element 63.

[0039] In this embodiment, the filter element mounting hole 62 has a threaded structure, and the inner mounting component 71 is a threaded cavity tube that is threadedly connected to the filter element mounting hole 62.

[0040] Deformed filter elements are more difficult to replace, and because the filter elements are individually locked, backwashing the entire filter element is difficult, requiring the entire tank to be opened for rinsing. Therefore, this invention, through the adjustable pressure structure 80, can tightly fix the pressure plate 81 with the clamping member 82 during the filtration of the security filter element 63, thereby ensuring the filtration retention effect. After the filtration stage, the clamping member 82 can be released to loosen the pressure plate 81. At this time, the pressure plate 81 does not completely loosen the security filter element 63, but slightly tightens it. As the clamping member 82 rises, the top surface of the pressure plate 81 becomes flush with the rotating member 631 on the top surface of the security filter element 63. This allows the pressure plate 81 to drive the rotating member 631 to rotate, thereby causing all the security filter elements 63 to rotate. In the backwashing stage, all the security filter elements 63 can be rotated to throw out the backwash water, thus cleaning the filter elements more thoroughly and maintaining the retention strength of insoluble substances.

[0041] In order to fix all the safety filter elements 63, the clamping plate 81 in this embodiment includes a clamping plate 812 with several clearance holes on its surface. The lower end of the clamping plate 812 is provided with several clamping blocks 813 that cooperate with the vertical fixing frame 634. The clamping blocks 813 are elastic. The clamping plate 81, through the clamping plate 812 and several clamping blocks 813, clamps and fixes the safety filter elements 63. The clamping process is divided into two stages. After the clamping blocks 813 clamp the safety filter elements 63, the clamping member 82 will continue to apply pressure, so that the elastic clamping blocks 813 will continue to be squeezed, and the safety filter elements 63 will continue to be squeezed, providing a certain rebound and limiting basis for the subsequent upward rotation.

[0042] Since the lithium difluorophosphate processed by this invention has a certain degree of corrosiveness, the clamping member 82 in this embodiment includes a clamping rod fixing seat 821 disposed on the outside of the security filter body 60. A clamping rod guide frame 822 is disposed at the upper end of the clamping rod fixing seat 821. A clamping rod 823 is threadedly connected to the clamping rod guide frame 822. A spring seat 824 is disposed on the clamping rod 823. The spring seat 824 is embedded in the hollow cylinder 825. The hollow cylinder 825 is fixed on the outer rotating member 83. The clamping member 82 adopts a manual locking and fixing method, that is, by tightening or unscrewing the clamping rod 823, the clamping rod 823 moves on the clamping rod guide frame 822, so that the spring seat 824 at the lower end of the clamping rod 823 presses against or moves away from the hollow cylinder 825 on the outer rotating member 83, thereby allowing the outer rotating member 83 to engage or disengage with the rotating member 631.

[0043] The outer rotating component 83 has no self-power when rotating. In this embodiment, the outer rotating component 83 includes an outer rotating disk 831 fixed at the lower end of the hollow cylinder 825. The bottom of the outer rotating disk 831 is connected to a rotating pipe 832 that passes through the pressing disk 81. The rotating pipe 832 is connected to the external recoil section 64. The rotation of the rotating pipe 832 drives the outer rotating disk 831 to rotate, thereby causing the outer rotating disk 831 to drive the rotating component 631 to rotate. The rotating pipe 832 will rotate when the external recoil section 64 is inserted.

[0044] The rotating component 631 and the outer rotating disk 831 are in an intermittently engaged state, moving forward and backward. In this embodiment, the rotating component 631 is a gear component. The outer rotating disk 831 is a circular disk 8311 fixedly mounted on the pressure plate 81. The inner and outer sides of the circular disk 8311 are provided with meshing teeth 8312 that mesh with the rotating component 631. The meshing teeth 8312 are all engaged with the rotating component 631. The outer rotating disk 831 is a circular disk 8311 fixedly mounted on the pressure plate 81, and it is provided with meshing teeth 8312 on both its inner and outer sides, so that it can cooperate with the rotating component 631 on both the inner and outer sides, thereby allowing both the inner and outer rings of the safety filter element 63 to be driven simultaneously, so that all the safety filter elements 63 can be driven simultaneously.

[0045] The rotating pipe 832 is driven by backflushing water. Specifically, the rotating pipe 832 includes a lower rotating chamber pipe 8321 connected to the lower end of the outer rotating disk 831. Several sets of impellers 8322 are provided at the lower end of the lower rotating chamber pipe 8321. The lower end of the lower rotating chamber pipe 8321 communicates with the backflushing pipe 8323, which is connected to the external backflushing section 64. After the backflushing water passes through the lower rotating chamber pipe 8321, it drives the impellers 8322 to rotate, thereby causing the entire lower rotating chamber to rotate. When tube 8321 rotates, the top of the lower rotating chamber tube 8321 is connected to the outer rotating disk 831, and the top of the outer rotating disk 831 is engaged with the clamping member 82 through the hollow cylinder 825. Therefore, the lower rotating chamber tube 8321 will rotate with the spring seat 824 of the clamping member 82 as the fixed point, thereby ensuring the rotation accuracy and preventing the outer rotating member 83 from disengaging from the rotating member 631. It should be emphasized that the bottom of several sets of impellers 8322 is connected to the flower disc 61 through a shaft fixing rod 8324 and passes through the outer recoil section 64.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A security filter with strong interception capacity, characterized in that, include: Security filter body (60), a flower plate (61) is provided in the middle of the interior of the security filter body (60), a plurality of filter element mounting holes (62) are provided in the flower plate (61), and a security filter element (63) is embedded in the filter element mounting holes (62). The inner detection bracket (70) includes an inner mounting member (71) connected in the filter element mounting hole (62), the inner mounting member (71) extending upward and having an inner movable frame (72) located inside the security filter element (63), the inner movable frame (72) being spaced apart from the security filter element (63); An adjustable pressure structure (80) is provided, wherein a rotating member (631) is fixedly connected to the top of the security filter element (63), the adjustable pressure structure (80) includes a pressure plate (81) disposed on the top of all security filter elements (63), a pressure member (82) is movably disposed on the top of the pressure plate (81), an external rotating member (83) is disposed at the upper end of the pressure member (82), and the bottom of the external rotating member (83) extends to the bottom of the security filter body (60). During filtration, the clamping member (82) presses the clamping disc (81) against the upper end of all the security filter elements (63). During backwashing, the clamping member (82) releases the force and raises the clamping disc (81). After the clamping disc (81) rises, it is flush with the rotating member (631). After the external rotating member (83) is introduced with backwash liquid, it drives itself to rotate, and the clamping disc (81) drives the rotating member (631) to rotate, thereby causing all the security filter elements (63) to rotate.

2. The security filter with strong interception capacity according to claim 1, characterized in that, The security filter element (63) includes a flow frame (633) for fixing the security filter membrane (632). The bottom of the flow frame (633) is locked in the filter element mounting hole (62). The top of the flow frame (633) is bent upward to form a vertical fixing frame (634). The rotating member (631) is fixed on the vertical fixing frame (634).

3. A security filter with strong interception capacity according to claim 2, characterized in that, The vertical fixing frame (634) includes an inwardly recessed section (6341) integrally formed on the top of the flow frame (633). The upper end of the inwardly recessed section (6341) is connected to a vertical section (6342). A static mating ring (6343) is also connected to the vertical section (6342). A mating rib (6344) is provided on the outer side of the static mating ring (6343).

4. A security filter with strong interception capacity according to claim 3, characterized in that, The filter element mounting hole (62) has a threaded structure, and the inner mounting part (71) is a threaded cavity tube that is threadedly connected to the filter element mounting hole (62).

5. A security filter with strong interception capacity according to claim 4, characterized in that, The inner movable frame (72) includes a tapered frame (721) connected above the inner mounting member (71), the upper end of the tapered frame (721) is connected to a fancy support frame (722), the top of the fancy support frame (722) is connected to an inner connecting frame (723), and the inner connecting frame (723) extends to the inner bottom of the inward section (6341).

6. A security filter with strong interception capacity according to claim 3, characterized in that, The clamping plate (81) includes a clamping plate (812) with a plurality of clearance holes on its surface. The lower end of the clamping plate (812) is provided with a plurality of clamping blocks (813) that cooperate with the vertical fixing frame (634). The clamping blocks (813) are elastic.

7. A security filter with strong interception capacity according to claim 1, characterized in that, The clamping component (82) includes a clamping rod fixing seat (821) disposed on the outside of the security filter body (60). A clamping rod guide frame (822) is provided at the upper end of the clamping rod fixing seat (821). A clamping rod (823) is threadedly connected to the clamping rod guide frame (822). A spring seat (824) is provided on the clamping rod (823). The spring seat (824) is embedded in the hollow cylinder (825). The hollow cylinder (825) is fixed on the outer rotating component (83).

8. A security filter with strong interception capacity according to claim 7, characterized in that, The outer rotating component (83) includes an outer rotating disk (831) fixed at the lower end of the hollow cylinder (825). The bottom of the outer rotating disk (831) is connected to a rotating pipe (832) that passes through the pressing disk (81). The rotating pipe (832) is connected to the outer recoil section (64).

9. A security filter with strong interception capacity according to claim 8, characterized in that, The rotating component (631) is a gear component. The outer rotating disk (831) is a circular disk (8311) fixedly mounted on the pressure disk (81). The inner and outer sides of the circular disk (8311) are provided with meshing teeth (8312) that mesh with the rotating component (631). The meshing teeth (8312) all mesh with the rotating component (631).

10. A security filter with strong interception capacity according to claim 8, characterized in that, The rotating tube (832) includes a lower rotating cavity tube (8321) connected to the lower end of the outer rotating disk (831). The lower end of the lower rotating cavity tube (8321) is provided with several sets of impellers (8322). The lower end of the lower rotating cavity tube (8321) is connected to the backflush tube (8323), and the backflush tube (8323) is connected to the outer backflush section (64).

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