Filter element suitable for multi-stage filtration

Abstract

The utility model relates to the technical field of filter elements, and particularly discloses a filter element suitable for multi-stage filtration, which comprises a mounting seat, each connecting mechanism comprises a sliding chute and a limiting plate, each sliding mechanism comprises an elastic block and a limiting ring, a threaded cylinder is arranged and matched with the limiting ring and the limiting plate, if an internal thread of the threaded cylinder is damaged, the elastic block is pressed to enable the limiting ring to move downwards, and the threaded cylinder is fixed. Then the limiting plate is pulled to release the connection between the limiting plate and the limiting groove, at the moment, the threaded cylinder can be taken out from the interior of the mounting base, a new threaded cylinder or a maintained threaded cylinder is placed into the mounting base to be mounted, the dismounting and mounting process of the threaded cylinder is simple, and a user can conveniently maintain the threaded cylinder; when the thread connection link encounters the conditions such as thread slipping, only the thread part needs to be replaced or maintained, the whole filter element does not need to be replaced, meanwhile, damage to other structures of the filter element is avoided, resource waste is reduced, and the service life of the filter element is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of filter element technology, and in particular to a filter element suitable for multi-stage filtration. Background Technology

[0002] Filter cartridges are a professional term for filtration and purification functions. They are used to purify raw fluids and facilitate the separation of fluids. Currently, filter cartridges are mainly used in filtration industries such as oil filtration, air filtration, and water filtration. Stainless steel filter cartridges, due to their material properties and structural design, play a crucial role in multi-stage filtration systems and are suitable for various applications. Stainless steel filter cartridges possess the following technologies:

[0003] 1. Multi-layer composite structure, made up of stainless steel filter screens or sintered layers with different pore sizes or filtration precision. The coarser pore size part can intercept larger suspended solids, silt and other impurities, playing a pre-filtration role. The middle pore size filter layer further captures medium-sized impurities, while the innermost high-precision filter layer can perform final fine filtration of tiny bacteria, viruses, colloidal particles and some small molecule impurities dissolved in the solution.

[0004] 2. Surface treatment technology: The surface of stainless steel filter elements is specially treated, such as passivation and coating. Passivation treatment can enhance the oxidation resistance of stainless steel surface and prevent it from reducing filtration performance or producing corrosion products that contaminate the filter media due to oxidation during long-term use.

[0005] 3. Connection technology: The stainless steel filter element has a threaded mechanism, which allows it to be directly screwed into a filter interface with matching threads.

[0006] When using threaded connections for filter elements, uneven force, excessive rotation speed, or mismatched connection tools can easily lead to stripping of the threads. Once stripped, the connection between the filter element and the matching device becomes less stable, resulting in impaired sealing. To avoid this, since the threaded part is an integral structure with the filter element body, damage to the threaded part requires replacing the entire filter element, resulting in wasted resources. Alternatively, repairing the threaded part can easily damage the surrounding structure. This application proposes a solution to this problem: designing the threaded mechanism separately from the filter element, making the threaded mechanism detachable. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a filter element suitable for multi-stage filtration. It solves the technical problem that when the threaded part is integrated with the filter element body, the entire filter element needs to be replaced when the threaded part is damaged, resulting in a waste of resources, or that repairing the threaded part can easily cause damage to the surrounding structure during the repair process.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A filter element suitable for multi-stage filtration includes a mounting base. The mounting base has a threaded cylinder for mounting the filter element inside. Two limiting grooves are formed on the side wall of the threaded cylinder. The side wall of the mounting base has two connecting mechanisms for fixing the threaded cylinder. Each connecting mechanism includes a sliding groove, a limiting plate, and a retaining groove. The sliding groove is formed on the side wall of the mounting base, extends into the interior of the mounting base, and is aligned with the limiting groove. The limiting plate is slidably connected inside the sliding groove and can be inserted into the limiting groove to engage with the threaded cylinder. The retaining groove is formed at the bottom of the limiting plate at the end away from the limiting groove. The mounting base has a sliding mechanism for fixing the limiting plate outside. The sliding mechanism includes a spring block and a limiting ring. Both spring blocks are fixedly mounted on the side wall of the mounting base. The limiting ring is slidably connected to the outside of the mounting base and can be confined between the spring block and the limiting plate, engaging with the inside of the retaining groove.

[0010] Each chute has an internal plate, and each limiting plate has a movable groove on its exterior. The limiting plate is slidably connected to the exterior of the internal plate through the movable groove. Two guide plates are fixedly installed on the exterior of the mounting base. Two guide holes are opened on the exterior of the limiting ring. The limiting ring is slidably connected to the exterior of the guide plate through the guide holes. A placement plate is fixedly installed inside the mounting base, and the threaded cylinder is located on the upper surface of the placement plate.

[0011] Preferably, a limit block is provided below each guide plate, and the limit block is fixedly installed on the outside of the mounting base.

[0012] Preferably, the mounting base has an opening on one side corresponding to each slide, and the built-in plate is snapped into the inside of the opening.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting up a threaded cylinder, in conjunction with a limiting ring and a limiting plate, if the internal thread of the threaded cylinder is damaged, press the spring block to move the limiting ring downwards, and then pull the limiting plate to disengage the connection between the limiting plate and the limiting groove. At this point, the threaded cylinder can be removed from the inside of the mounting base, and a new or repaired threaded cylinder can be placed inside the mounting base for installation. The disassembly and assembly process of the threaded cylinder is simple and convenient for users to maintain. When the threaded connection encounters a situation such as stripped threads, only the threaded part needs to be replaced or repaired, without replacing the entire filter element. This avoids damage to other structures of the filter element, reduces resource waste, and extends the service life of the filter element.

[0015] Second, by setting a movable groove and cooperating with the built-in plate, when the threaded cylinder is disassembled or assembled, the limiting plate moves inside the sliding groove. At this time, the limiting plate is slidably connected to the outside of the built-in plate through the movable groove, which restricts the movement range of the limiting plate and prevents the limiting plate from falling out of the sliding groove, causing the limiting plate to be lost and affecting the installation of the threaded cylinder. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Exploded view of the mounting base;

[0019] Figure 3 This utility model Figure 2 Cross-sectional view of the mounting base;

[0020] Figure 4 This utility model Figure 2 Enlarged structural diagram of A in the middle.

[0021] Legend: 1. Mounting base; 2. Threaded cylinder; 3. Limiting groove; 4. Slide groove; 5. Limiting plate; 6. Spring block; 7. Limiting ring; 8. Internal plate; 9. Moving groove; 10. Guide plate; 11. Placement plate; 12. Guide hole; 13. Limiting block; 14. Opening; 15. Slot. Detailed Implementation

[0022] This application provides a filter element suitable for multi-stage filtration, effectively solving the technical problem that when the threaded part is an integral structure with the filter element body, the entire filter element needs to be replaced when the threaded part is damaged, resulting in a waste of resources, or that the surrounding structure is easily damaged during the repair process.

[0023] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application effectively solves the technical problem that in existing filter elements, the threaded part is an integral structure with the filter element body. When the threaded part is damaged, the entire filter element needs to be replaced, resulting in a waste of resources. Alternatively, repairing the threaded part can easily cause damage to the surrounding structure. The overall approach is as follows:

[0024] To address the problems existing in the prior art, this utility model provides a filter element suitable for multi-stage filtration, including a mounting base 1. The mounting base 1 has a threaded cylinder 2 for mounting the filter element inside. Two limiting grooves 3 are formed on the side wall of the threaded cylinder 2. The side wall of the mounting base 1 has two connecting mechanisms for fixing the threaded cylinder 2. Each connecting mechanism includes a sliding groove 4, a limiting plate 5, and a retaining groove 15. The sliding groove 4 is formed on the side wall of the mounting base 1, extends into the interior of the mounting base 1, and is aligned with the limiting groove 3. The limiting plate 5 is slidably connected inside the sliding groove 4 and can be inserted into the interior of the limiting groove 3 to engage with the threaded cylinder 2. The retaining groove 15 is formed at the bottom of the limiting plate 5 at the end away from the limiting groove 3. The outside of the mounting base 1 has a sliding mechanism for fixing the limiting plate 5. The sliding mechanism includes spring blocks 6 and limiting rings 7. Both spring blocks 6 are fixedly mounted on the side wall of the mounting base 1, and one end of each spring block 6 is fixedly mounted on the outside of the mounting base 1. The other ends of the two spring blocks 6 do not contact the mounting base 1 and extend outwards. The limiting ring 7 is slidably connected to the outside of the mounting base 1. The limiting ring 7 can be restricted between the spring block 6 and the limiting plate 5 and is locked inside the slot 15. By setting the threaded cylinder 2, in cooperation with the limiting ring 7 and the limiting plate 5, if the internal thread of the threaded cylinder 2 is damaged, press the spring block 6 to move the limiting ring 7 downwards, and then pull the limiting plate 5 to release the connection between the limiting plate 5 and the limiting slot 3. At this time, the threaded cylinder 2 can be taken out from the inside of the mounting base 1, and a new threaded cylinder 2 or a repaired threaded cylinder 2 can be put into the inside of the mounting base 1 for installation. The disassembly and assembly process of the threaded cylinder 2 is simple and convenient for users to maintain. When the threaded connection encounters a situation such as stripping, only the threaded part needs to be replaced or repaired, without replacing the entire filter element. At the same time, it avoids damage to other structures of the filter element, reduces resource waste, and extends the service life of the filter element.

[0025] Each slide groove 4 has an internal plate 8, and each limiting plate 5 has an external movable groove 9. The limiting plate 5 is slidably connected to the outside of the internal plate 8 through the movable groove 9. When the threaded cylinder 2 is disassembled or assembled, the limiting plate 5 moves inside the slide groove 4. At this time, the limiting plate 5 is slidably connected to the outside of the internal plate 8 through the movable groove 9, which restricts the movement range of the limiting plate 5 and prevents the limiting plate 5 from falling out of the inside of the slide groove 4, causing the limiting plate 5 to be lost and affecting the installation of the threaded cylinder 2.

[0026] Two guide plates 10 are fixedly installed on the outside of the mounting base 1. Two guide holes 12 are opened on the outside of the limiting ring 7. The limiting ring 7 is slidably connected to the outside of the guide plate 10 through the guide holes 12. The guide plate 10 provides sliding guidance for the limiting ring 7, restricts the sliding trajectory of the limiting ring 7, and makes it only move on the specified path, so as to prevent it from detaching from the mounting base 1 or causing other abnormal displacement.

[0027] The mounting base 1 has a fixed mounting plate 11 inside, and the threaded cylinder 2 is located on the upper surface of the mounting plate 11. When the threaded cylinder 2 is placed outside the mounting base 1, the mounting plate 11 can prevent the threaded cylinder 2 from moving downward inside the mounting base 1, making it convenient for the user to perform other operations.

[0028] Each guide plate 10 is provided with a limiting block 13 below it. The limiting block 13 is fixedly installed on the outside of the mounting base 1. The limiting block 13 and the guide plate 10 together form the sliding track of the limiting ring 7, preventing the limiting ring 7 from disengaging from the mounting base 1 when it moves downward. When installing the limiting ring 7, the limiting ring 7 is placed on the outside of the mounting base 1, and then the guide plate 10 is fixed on the outside of the mounting base 1. At this time, the limiting ring 7 is pushed so that it slides through the guide hole 12 and is connected to the outside of the guide plate 10. Then the limiting block 13 is installed below the guide plate 10. At this time, the limiting ring 7 can also slide through the guide hole 12 and be connected to the outside of the limiting block 13. Meanwhile, the gap between the limiting block 13 and the guide plate 10 is small and does not affect the movement of the limiting ring 7.

[0029] The mounting base 1 has an opening 14 on one side corresponding to each slide 4. The built-in plate 8 is snapped into the opening 14. When the limiting plate 5 is inserted into the slide 4, the built-in plate 8 is inserted into the moving slot 9 through the opening 14. At this time, the built-in plate 8 is snapped into the opening 14. If it is necessary to increase the stability of the built-in plate 8, a welding tool can be used to fix the built-in plate 8 into the opening 14.

[0030] Working principle:

[0031] When installing the threaded cylinder 2, place the threaded cylinder 2 into the mounting base 1. At this time, the threaded cylinder 2 slides downward under its own weight until it is blocked by the placement plate 11 and cannot move downward. At this time, adjust the threaded cylinder 2 so that the limiting plate 5 enters the limiting groove 3. When the limiting plate 5 enters the limiting groove 3, the limiting ring 7 is pushed upward. During this process, the limiting ring 7 pushes the spring block 6 so that the spring block 6 is close to the surface of the mounting base 1. The spring block 6 is subjected to a pressure opposite to its own extension direction. This pressure causes the spring block 6 to begin to deform. When the limiting ring 7 passes the spring block 6, the spring block 6 returns to its original position under its own elasticity. At this time, one end of the limiting ring 7 is engaged in the inside of the slot 15, and the other end is placed on the spring block 6. The limiting ring 7 is located between the limiting plate 5 and the spring block 6 and cannot move. At this time, the limiting plate 5 is restricted by the limiting ring 7 and cannot move, thereby ensuring the stability of the connection between the limiting plate 5 and the limiting groove 3.

[0032] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A filter cartridge suitable for use in a multi-stage filtration, comprising a mounting seat (1), characterized in that, The inside of the mounting seat (1) is provided with a threaded cylinder (2) for mounting a filter element, the side wall of the threaded cylinder (2) is provided with two limiting grooves (3), the side wall of the mounting seat (1) is provided with two connecting mechanisms for fixing the threaded cylinder (2), each connecting mechanism comprises a sliding groove (4), a limiting plate (5) and a clamping groove (15), the sliding groove (4) is arranged in the side wall of the mounting seat (1), the sliding groove (4) extends to the inside of the mounting seat (1) and is aligned with the limiting groove (3), the limiting plate (5) is slidingly connected in the inside of the sliding groove (4) and can be inserted into the inside of the limiting groove (3) and clamped with the threaded cylinder (2), and the clamping groove (15) is arranged in the bottom of the limiting plate (5) away from the limiting groove (3). Wherein, the outside of the mounting seat (1) is provided with a sliding mechanism for fixing the limiting plate (5), the sliding mechanism comprises a spring block (6) and a limiting ring (7), the two spring blocks (6) are fixedly installed on the side wall of the mounting seat (1), the limiting ring (7) is slidingly connected on the outside of the mounting seat (1), the limiting ring (7) can be limited between the spring block (6) and the limiting plate (5) and clamped in the inside of the clamping groove (15).

2. A filter cartridge suitable for use in a multi-stage filter according to claim 1, wherein, The inside of each sliding groove (4) is provided with an embedded plate (8), and the outside of each limiting plate (5) is provided with a moving groove (9). Wherein, the limiting plate (5) is slidingly connected to the outside of the embedded plate (8) through the moving groove (9).

3. A filter cartridge suitable for use in a multi-stage filter according to claim 1, wherein, The outside of the mounting seat (1) is fixedly provided with two guide plates (10), and the outside of the limiting ring (7) is provided with two guide holes (12). Wherein, the limiting ring (7) is slidingly connected to the outside of the guide plate (10) through the guide hole (12).

4. A filter cartridge suitable for use in a multi-stage filter according to claim 1, wherein, The inside of the mounting seat (1) is fixedly provided with a placing plate (11). Wherein, the threaded cylinder (2) is located on the upper surface of the placing plate (11).

5. A filter cartridge suitable for use in a multi-stage filter according to claim 3 wherein, The lower side of each guide plate (10) is provided with a limiting block (13). Wherein, the limiting block (13) is fixedly installed on the outside of the mounting seat (1).

6. A filter cartridge suitable for use in a multi-stage filter according to claim 2, wherein, One side of the mounting seat (1) corresponding to each sliding groove (4) is provided with an opening (14). Wherein, the embedded plate (8) is clamped in the inside of the opening (14).

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