Folding filter element

Abstract

The utility model relates to the technical field of filtering equipment, in particular to a folding filter element which comprises an inner framework and an outer framework sleeved on the outer side of the inner framework, a folding filter element body used for filtering liquid is arranged between the outer framework and the inner framework, and an upper extending part and a lower extending part are respectively formed at the top end and the bottom end of the outer framework. The upper extension part is provided with an upper cover body, and the lower extension part is provided with a lower cover body; a connection insertion pipe is formed on the upper cover body, second meshes are formed in the inner framework, and first meshes are formed in the outer framework; the liquid guide frame body is used for gathering and guiding liquid flowing out of the first meshes; the lower cover body is arranged in the liquid guide frame body and is fixedly connected with the liquid guide frame body through a connecting piece; a connection sleeve is arranged at the bottom of the liquid guide frame body and can be connected with the connection insertion pipe in an inserted mode. Liquid can be filtered for many times by splicing the folding filter elements, the folding filter elements are spliced and combined for use, the liquid is fully filtered, and the filtering efficiency of the liquid is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter equipment technical field especially relates to a folding filter element. BACKGROUND

[0002] In the field of liquid filtration technology, the folding filter element is a common filter element, which is widely used in various liquid filtration scenarios due to its large filtering area and high filtering performance.

[0003] In many filtration demand scenarios, relying only on a single folding filter element for filtration often fails to achieve the desired filtration effect. For example, in the ultra-pure water preparation stage of the electronic chip manufacturing process with extremely high water quality requirements, or in the fine filtration stage of injection liquid in the biopharmaceutical field, a single folding filter element may not be able to fully remove harmful substances such as small impurities and microorganisms in the liquid, thereby affecting product quality. For example, in the deep treatment of industrial wastewater to meet strict discharge standards, a single-stage filtration may not be able to reduce heavy metal ions, organic matter and other pollutants in the wastewater to below the specified limit, resulting in increased subsequent treatment costs or direct discharge causing harm to the environment.

[0004] In the prior art, although some filter equipment adopts a multi-stage filtration design concept, in the combination use of folding filter elements, users cannot combine them according to the use environment or application scenario, making the combination use inconvenient. Therefore, the present folding filter element is provided to solve the above technical problems. SUMMARY

[0005] The utility model aims at the deficiency of prior art to provide a folding filter element to solve the technical problem that the existing folding filter element can only be used alone and cannot be used in combination with multiple folding filter elements.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A folding filter element includes an inner skeleton and an outer skeleton fitted outside the inner skeleton, a folding filter element body for filtering liquid is arranged between the outer skeleton and the inner skeleton, the top end and the bottom end of the outer skeleton are respectively formed with an upper extension and a lower extension, the upper extension is provided with a detachable upper cover body for covering the top end of the outer skeleton, and the lower extension is provided with a detachable lower cover body for covering the bottom end of the outer skeleton; the upper cover body is formed with a connecting pipe in communication with the inside of the inner skeleton and used for guiding the liquid to be filtered, the inner skeleton is formed with a second mesh, and the outer skeleton is formed with a first mesh.

[0008] The liquid guiding frame is arranged in the lower cover body and is fixedly connected through the connecting piece.

[0009] Further, the outer frame and the inner frame are both cylindrical; the bottom of the upper cover body is provided with an extension pipe which is arranged in communication with the connecting pipe and is used for inserting into the top end of the inner frame.

[0010] Further, the outer frame and the inner frame are both cylindrical; the bottom of the upper cover body is provided with an extension pipe which is arranged in communication with the connecting pipe and is used for inserting into the top end of the inner frame.

[0011] Further, the first clamping part is arranged between the upper cover body and the upper extension part, and the second clamping part is arranged between the lower cover body and the lower extension part.

[0012] Further, the first clamping part includes a plurality of sliding grooves which are arranged on the outer side of the upper extension part and are arranged in a whole line around the center point, and the sliding grooves are L-shaped; and the upper cover body is provided with a plurality of sliding blocks which are arranged on the inner side wall of the upper cover body and are used for being embedded in the sliding grooves and sliding in the sliding grooves along the tracks.

[0013] Further, the end side wall of each sliding groove is formed with a clamping convex part, and the side edge of each sliding block which is close to the upper extension part is formed with a clamping concave part which is used for clamping the clamping convex part.

[0014] Further, the connecting piece is in the form of a sheet.

[0015] Further, the outer side of the connecting pipe is provided with a plurality of first sealing rings, and the outer side wall of the liquid guiding frame is provided with a plurality of second sealing rings; the first sealing rings and the second sealing rings are both silica gel parts.

[0016] Further, the inner side edge of the opening of the top of the liquid guiding frame is formed with a liquid guiding bevel.

[0017] Further, the top surface of the upper cover body is provided with a plurality of limiting blocks, and the inner side wall of the bottom end of the connecting pipe is formed with a plurality of limiting grooves which are used for embedding the limiting blocks.

[0018] The utility model discloses a beneficial effect: the liquid that needs filtering is guided to the inside of the inner framework through the connecting pipe, then the liquid is guided out through the second mesh hole on the inner framework and the first mesh hole on the outer framework, and the liquid passes the folding filter core body in turn, and the folding filter core body is arranged in the folded shape, so that the contact area with the liquid is increased, the liquid is fully contacted, and the filtering efficiency of the liquid is improved.

[0019] In addition, the plurality of the folding filter core is spliced, and the liquid can be filtered multiple times. Specifically, the connecting pipe at the top end of the second folding filter core is inserted into the connecting sleeve at the bottom end of the first folding filter core, so that the two folding filter cores are spliced. After splicing, the liquid is guided into the first folding filter core through the connecting pipe at the top end of the first folding filter core, and the liquid is filtered for the first time by the folding filter core body of the first folding filter core. After filtering, the liquid flows out of the first mesh hole, is gathered by the liquid guiding frame, and is guided to flow out of the through hole. The liquid is guided by the connecting pipe at the top end of the second folding filter core, so that the liquid is guided into the second folding filter core for the second time. The plurality of the folding filter core can be spliced to filter the liquid multiple times. The plurality of the folding filter core is spliced and used in combination, so that the liquid is fully filtered, and the filtering efficiency of the liquid is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic view of the utility model installed in the filter cartridge shell.

[0021] Figure 2 It is a three-dimensional structure schematic view of the utility model.

[0022] Figure 3 It is an explosion drawing of the utility model.

[0023] Figure 4 It is an enlarged view of part A of the utility model.

[0024] Figure 5 It is an explosion drawing of the utility model from another perspective.

[0025] Figure 6 It is a structure schematic view of the connecting pipe and the connecting sleeve of the utility model after insertion.

[0026] The reference signs include:

[0027] 1, outer skeleton; 11, first mesh; 12, upper extension; 13, lower extension; 2, upper cover body; 21, adapter pipe; 22, first sealing ring; 23, limiting block; 24, extension pipe; 25, first embedded block; 3, lower cover body; 31, extension block; 32, second embedded block; 4, inner skeleton; 41, second mesh; 42, first embedded groove; 43, second embedded groove; 5, folding filter element; 6, sliding groove; 61, clamping convex part; 7, sliding block; 71, clamping concave part; 8, liquid guide frame; 81, second sealing ring; 82, through hole; 83, liquid guide bevel; 9, adapter sleeve; 91, limiting groove; 10, connecting piece; 20, filter cartridge shell. DETAILED DESCRIPTION

[0028] The folding filter element is described in detail below with reference to the drawings.

[0029] As shown in the drawings, Figure 1 An embodiment of the folding filter element of the utility model includes an inner skeleton 4 and an outer skeleton 1 sleeved outside the inner skeleton 4, the outer skeleton 1 and the inner skeleton 4 are both cylindrical, and a folding filter element 5 for filtering liquid is arranged between the outer skeleton 1 and the inner skeleton 4, wherein an upper extension 12 and a lower extension 13 are respectively formed at the top end and the bottom end of the outer skeleton 1, and the upper extension 12 is arranged with a detachable upper cover body 2 for covering the top end of the outer skeleton 1, and the lower extension 13 is arranged with a detachable lower cover body 3 for covering the bottom end of the outer skeleton 1; under the action of the upper cover body 2 and the lower cover body 3, the liquid to be filtered flows along the specified filtering channel.

[0030] Specifically, the upper cover body 2 is formed with an adapter pipe 21 arranged in communication with the inside of the inner skeleton 4 and used for guiding the liquid to be filtered, the inner skeleton 4 is formed with a second mesh 41, and the outer skeleton 1 is formed with a first mesh 11; after the liquid to be filtered is guided to the inside of the inner skeleton 4 through the adapter pipe 21, the liquid is guided out through the second mesh 41 on the inner skeleton 4 and the first mesh 11 on the outer skeleton 1, and the liquid sequentially passes through the second mesh 41 and the second mesh 41, and then passes through the folding filter element 5 to filter the liquid, and the folding filter element 5 is in the shape of a ring to increase the contact area with the liquid, so that the liquid can be fully contacted, and the filtering efficiency of the liquid is improved.

[0031] Furthermore, the bottom of the upper cover 2 is provided with an extension tube 24 that is connected to the connecting tube 21 and is used to insert into the inner side of the top of the inner frame 4, and the top of the lower cover 3 is provided with an extension block 31 that is used to insert into the inner side of the bottom of the inner frame 4. When the upper cover 2 is installed on the upper extension 12, the extension tube 24 is inserted into the inner side of the top of the inner frame 4. When the lower cover 3 is installed on the lower extension 13, the extension block 31 is inserted into the inner side of the bottom of the inner frame 4. Under the combined action of the extension tube 24 and the extension block 31, the inner frame 4 is stably installed inside the outer frame 1 and will not shift. Furthermore, several first inserts 25 are formed on the outer circumference of the extension tube 24, and several first grooves 42 for the first inserts 25 to be inserted are formed on the inner side of the top of the inner frame 4. When the extension tube 24 is inserted into the inner side of the top of the inner frame 4, the several first inserts 25 are respectively inserted into different first grooves 42. Several second inserts 32 are formed on the outer circumference of the extension block 31, and several second grooves 43 for the second inserts 32 to be inserted are formed on the inner side of the bottom of the inner frame 4. When the extension block 31 is inserted into the inner side of the bottom of the inner frame 4, the several second inserts 32 are respectively inserted into different second grooves 43. Under the combined action of the first inserts 25 being inserted into the first grooves 42 and the second inserts 32 being inserted into the second grooves 43, the inner frame 4 installed inside the outer frame 1 will not rotate, further improving the stability of the inner frame 4 after installation.

[0032] In order to enable the upper cover 2 to be detachably installed on the upper extension 12 and the lower cover 3 to be detachably installed on the lower extension 13, a first snap-fit ​​component is provided between the upper cover 2 and the upper extension 12, and a second snap-fit ​​component is provided between the lower cover 3 and the lower extension 13. The first snap-fit ​​component and the second snap-fit ​​component have the same structure, and under the action of the first snap-fit ​​component and the second snap-fit ​​component, the upper cover 2 is snapped into the upper extension 12 and the lower cover 3 is snapped into the lower extension 13. The specific method of achieving the snap-fit ​​is described below.

[0033] The first snap-fit ​​component includes several L-shaped sliding grooves 6 arranged in a row around the center point on the outer side of the upper extension 12. It also includes several sliders 7 disposed on the inner wall of the upper cover 2. The sliders 7 are used to embed into the sliding grooves 6 and can slide along their tracks within the grooves 6. The number of sliders 7 is the same as the number of sliding grooves 6, and their positions are relatively opposite. After the upper cover 2 is placed on the upper extension 12 from top to bottom, each slider 7 is embedded into a different sliding groove 6, and then the rotation is reversed counterclockwise (the direction of rotation is...). Figure 4 (Based on the reference) Twist the upper cover 2 to make the slider 7 slide in the slide groove 6 until it slides to the end position of the L-shaped slide groove 6. At this time, when an upward or downward force is applied to the upper cover 2, the upper cover 2 cannot detach from the upper extension 12.

[0034] Further, a clamping protrusion 61 is formed on the end side wall of each chute 6, and a clamping recess 71 for clamping the clamping protrusion 61 is formed on the side of each slider 7 close to the upper extension 12. When the slider 7 slides to the end position of the L-shaped chute 6, the clamping protrusion 61 is clamped into the clamping recess 71, so that the upper cover body 2 cannot be easily rotated on the upper extension 12. After a certain amount of twisting force is applied to the upper cover body 2, the slider 7 slides in the chute 6, and the clamping protrusion 61 and the clamping recess 71 are automatically disengaged, so that the upper cover body 2 can be detached from the upper extension 12.

[0035] In the present embodiment, a plurality of the present folded filter cartridges can be spliced and simultaneously loaded into the filter cartridge housing 20 (as shown in Figure 1 The filter cartridge housing 20 is a component of an existing filter, and by splicing a plurality of the present folded filter cartridges and simultaneously loading them into the existing filter, multiple filtration of liquid is achieved, further improving the filtration effect of the liquid. How to splice is described below.

[0036] The present folded filter cartridge further comprises a liquid guiding frame 8 for converging and guiding the liquid flowing out of the first mesh 11, the lower cover body 3 is placed in the liquid guiding frame 8, and the liquid guiding frame 8 and the lower cover body 3 are fixedly connected by the connecting piece 10; a connecting sleeve 9 for plugging with the connecting plug 21 is arranged at the bottom of the liquid guiding frame 8, and a through hole 82 in communication with the connecting sleeve 9 is formed in the bottom of the liquid guiding frame 8. The connecting plug 21 at the top end of the second folded filter cartridge is inserted into the connecting sleeve 9 at the bottom end of the first folded filter cartridge, thereby achieving the splicing of the two present folded filter cartridges. After splicing, the two present folded filter cartridges are simultaneously loaded into the filter cartridge housing 20 by the insertion mounting method. At this time, the connecting plug 21 at the top end of the first folded filter cartridge is in communication with the opening at the top of the filter cartridge housing 20 (as shown in Figure 1 The liquid is guided into the first folded filter cartridge through the connecting plug 21, and the outer side wall of the liquid guiding frame 8 is in interference fit with the inner side wall of the filter cartridge housing 20 to prevent the liquid from flowing out of the gap between the liquid guiding frame 8 and the filter cartridge housing 20. After being filtered by the folded filter cartridge body 5 of the first folded filter cartridge, the liquid flows out of the first mesh 11 of the first folded filter cartridge, is converged and guided by the liquid guiding frame 8, and flows out of the through hole 82 after being filtered once. The liquid is guided into the second folded filter cartridge through the connecting plug 21 at the top end of the second folded filter cartridge for the second filtration. The number of times of filtration of the liquid is equal to the number of the present folded filter cartridges spliced in the filter cartridge housing 20, achieving sufficient filtration of the liquid.

[0037] In addition, the connecting piece 10 is sheet-shaped, so that no resistance is generated to the liquid during the process of converging and guiding the liquid. A plurality of first sealing rings 22 are arranged on the outer side of the circumference of the adapter pipe 21, so as to improve the sealing between the adapter pipe 21 and the adapter sleeve 9 after the adapter pipe 21 is inserted into the adapter sleeve 9, and prevent the liquid from flowing away from the gap between the adapter pipe 21 and the adapter sleeve 9. A plurality of second sealing rings 81 are arranged on the outer side wall of the liquid guiding frame 8, so as to improve the sealing between the outer side wall of the liquid guiding frame 8 and the inner side wall of the filter cartridge shell 20, prevent the liquid from flowing away from the gap between the liquid guiding frame 8 and the filter cartridge shell 20, and make the liquid converge into the liquid guiding frame 8. The first sealing ring 22 and the second sealing ring 81 are both silica gel parts, and are deformed to fill the gap during the process of inserting the adapter pipe 21 into the adapter sleeve 9 and inserting the liquid guiding frame 8 into the filter cartridge shell 20.

[0038] The liquid guiding bevel 83 is formed on the inner side of the top opening of the liquid guiding frame 8, so as to further improve the converging and guiding effect of the liquid guiding frame 8 on the liquid and reduce the power assistance of the liquid flow.

[0039] In order to prevent the adapter pipe 21 from rotating after being inserted into the adapter sleeve 9, a plurality of limiting blocks 23 are arranged on the top surface of the upper cover 2, and a plurality of limiting grooves 91 for embedding the limiting blocks 23 are formed on the inner side wall of the bottom end of the adapter sleeve 9; when the adapter pipe 21 is inserted into the adapter sleeve 9, the limiting blocks 23 are embedded into the limiting grooves 91, so that the plurality of folded filter cartridges do not rotate relative to each other after being spliced, and the stability after splicing is improved.

[0040] As can be seen from the above, the utility model has the excellent characteristics described above, and has the practicability of improving the performance of the prior art, and becomes a product with high practical value.

[0041] The above content is only the preferred embodiment of the utility model, and for the ordinary skilled in the art, the specific implementation mode and application range can be changed according to the idea of the utility model, and the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A folded filter cartridge, characterized by: The utility model provides a filter device, which comprises an inner frame (4) and an outer frame (1) sleeved outside the inner frame (4), a folding filter core body (5) for filtering liquid is arranged between the outer frame (1) and the inner frame (4), the top end and the bottom end of the outer frame (1) are respectively formed with an upper extension part (12) and a lower extension part (13), the upper extension part (12) is arranged with an upper cover body (2) which is detachable and used for covering the top end of the outer frame (1), the lower extension part (13) is arranged with a lower cover body (3) which is detachable and used for covering the bottom end of the outer frame (1), the upper cover body (2) is formed with a connecting insertion pipe (21) which is arranged in communication with the inside of the inner frame (4) and used for guiding the liquid to be filtered, the inner frame (4) is formed with a second mesh hole (41), and the outer frame (1) is formed with a first mesh hole (11). The utility model also comprises a liquid guiding frame body (8) used for converging and guiding the liquid flowing out of the first mesh hole (11), the lower cover body (3) is arranged in the liquid guiding frame body (8) and fixedly connected through a connecting piece (10), the bottom of the liquid guiding frame body (8) is provided with a connecting sleeve (9), the connecting sleeve (9) can be inserted with the connecting insertion pipe (21), and the bottom of the liquid guiding frame body (8) is formed with a through hole (82) which is arranged in communication with the connecting sleeve (9).

2. The folded filter element of claim 1, wherein: The outer frame (1) and the inner frame (4) are both cylindrical, the bottom of the upper cover body (2) is provided with an extension pipe (24) which is arranged in communication with the connecting insertion pipe (21) and used for being inserted into the inside of the top end of the inner frame (4), and the top of the lower cover body (3) is provided with an extension block (31) which is used for being inserted into the inside of the bottom end of the inner frame (4).

3. A folded filter element according to claim 2, characterised in that: The circumferential outside of the extension pipe (24) is formed with a plurality of first embedding blocks (25), the inside of the top end of the inner frame (4) is formed with a plurality of first embedding grooves (42) for embedding the first embedding blocks (25), the circumferential outside of the extension block (31) is formed with a plurality of second embedding blocks (32), and the inside of the bottom end of the inner frame (4) is formed with a plurality of second embedding grooves (43) for embedding the second embedding blocks (32).

4. The folded filter element of claim 1 wherein: The first clamping part is arranged between the upper cover body (2) and the upper extension part (12), and the second clamping part is arranged between the lower cover body (3) and the lower extension part (13).

5. A folded filter element according to claim 4, characterised in that: The first clamping part comprises a plurality of sliding grooves (6) which are arranged on the outside of the upper extension part (12) and arranged in a whole line around the center point, the sliding grooves (6) are L-shaped, and the first clamping part also comprises a plurality of sliding blocks (7) which are arranged on the inner wall of the upper cover body (2) and used for being embedded in the sliding grooves (6) and sliding along the tracks of the sliding grooves (6).

6. A folded filter element according to claim 5, characterised in that: The end side wall of each sliding groove (6) is formed with a clamping convex part (61), and the side edge of each sliding block (7) close to the upper extension part (12) is formed with a clamping concave part (71) which is used for clamping the clamping convex part (61).

7. The folded filter element of claim 1 wherein: The connecting piece (10) is in the form of a sheet.

8. The folded filter element of claim 1 wherein: The circumferential outside of the connecting insertion pipe (21) is provided with a plurality of first sealing rings (22), and the outer side wall of the liquid guiding frame body (8) is provided with a plurality of second sealing rings (81); the first sealing rings (22) and the second sealing rings (81) are both silica gel parts.

9. The folded filter element of claim 1 wherein: The inner side edge of the top opening of the liquid guiding frame body (8) is formed with a liquid guiding bevel (83).

10. The folded filter element of claim 1, wherein: A plurality of limiting blocks (23) are arranged on the top surface of the upper cover body (2), and a plurality of limiting grooves (91) are formed on the inner side wall of the bottom end of the adapter sleeve (9), which can embed the limiting blocks (23).

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