An exhaust filter with easy filter replacement

Abstract

The utility model discloses a kind of waste gas filters convenient to filter core replacement, including filter body, the trapezoidal block is fixedly connected in four sides of filter body, the center of filter body is provided with filter core body, the top of filter core body is fixedly connected with top end plate, and the center of top end plate and filter body top is clamped. The waste gas filter convenient to filter core replacement, when replacing filter core, only need to rotate knob, drive rotating rod rotation, utilize the thread cooperation of outer thread and the inner thread groove on the resistance plate, make resistance plate move upwards along movable groove, because resistance plate and the arc-shaped end of moving fixed plate contact, the arc-shaped end of resistance plate generates upward component force to the arc-shaped end of moving fixed plate in process of moving upwards, moving fixed plate is slid in moving groove, to gradually separate from the fixed groove on the top clamping block of filter core body, when moving fixed plate completely separates from fixed groove, the fixed constraint of the top of filter core body is released.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas filter technology, specifically an exhaust gas filter that facilitates filter element replacement. Background Technology

[0002] In numerous fields such as industrial production, chemical manufacturing, and vehicle exhaust treatment, waste gas emissions have always been a key aspect of environmental governance. As a core component of waste gas treatment systems, the performance and ease of use of waste gas filters are of paramount importance.

[0003] Existing exhaust gas filters often employ cumbersome connection methods between the filter element and the filter body. Some filters use bolts to secure the filter element inside, requiring maintenance personnel to use specialized tools such as wrenches and screwdrivers to loosen and remove multiple bolts one by one when replacing the element. Due to the typically narrow internal space of the filter, this operation is difficult, consuming significant time and effort, and increasing the risk of stripped or lost bolts, further complicating filter element replacement and increasing costs. Additionally, some exhaust gas filters use snap-fit ​​connections, but these designs are often flawed. The tight fit between the snaps requires considerable force for disassembly, and the process can easily damage the snaps or the filter element itself, rendering the filter unusable and necessitating replacement, thus increasing operating costs. Utility Model Content

[0004] The purpose of this utility model is to provide an exhaust gas filter that facilitates filter element replacement, addressing the aforementioned issue in the background art where the connection between the filter element and the filter body in existing exhaust gas filters is typically cumbersome. Some exhaust gas filters use bolts to fix the filter element inside the filter. When replacing the filter element, maintenance personnel need to use specialized tools, such as wrenches and screwdrivers, to loosen and remove multiple bolts one by one. Since the internal space of the filter is usually narrow, the operating space is limited, making bolt removal difficult for maintenance personnel. This not only consumes a lot of time and effort but also easily leads to stripped or lost bolts, further increasing the difficulty and cost of filter element replacement. Furthermore, some exhaust gas filters use a snap-fit ​​connection structure, but the snap-fit ​​design is often not well-designed. The snaps fit tightly, requiring significant external force for disassembly, and are prone to damage during disassembly, potentially damaging the snaps or the filter element itself, rendering the filter unusable and requiring replacement with a new filter element, thus increasing operating costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste gas filter that facilitates filter element replacement, comprising a filter body, trapezoidal blocks fixedly connected to all four sides of the filter body, a filter element body disposed at the center of the filter body, a top plate fixedly connected to the top of the filter element body, the top plate being snapped into the center of the top of the filter body, an outer plate fixedly connected to the top of the top plate, a movable groove being provided near the top of one side of each of the two trapezoidal blocks located at the top, a movable fixing plate being slidably connected to one side of each movable groove, and locking blocks fixedly connected to the top and bottom of both sides of the filter element body, with the opposite sides of the four locking blocks respectively snapping into one end of each of the four trapezoidal blocks, the two locking blocks located at the top being opposite to each other. One end of each filter body has a fixed groove. Two movable fixed plates, one on each side, pass through the fixed groove and engage with it. Movable grooves are provided on both sides of the top of the filter body. A stop plate is provided at the bottom of the movable groove. The bottom of the stop plate passes through the movable groove and contacts the bottom of the movable groove. One side of the movable fixed plate contacts the bottom of the stop plate. The end of the movable fixed plate near the stop plate is designed to be arc-shaped. The bottom end of the stop plate is designed to be arc-shaped. An internal thread groove is provided at the center of the top of the stop plate. A rotating rod is provided at the top of the movable groove. An external thread is provided at the bottom of the surface of the rotating rod. The external thread passes through the internal thread groove and is threadedly connected to it.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This easy-to-replace exhaust gas filter only requires rotating a knob to turn a rotating rod. The external thread engages with the internal thread groove on the abutment plate, causing the abutment plate to move upwards along the movable groove. As the abutment plate contacts the arc-shaped end of the movable fixing plate, the arc-shaped end exerts an upward force on the arc-shaped end of the movable fixing plate during the upward movement, pushing the movable fixing plate to slide within the movable groove. This gradually disengages the fixing plate from the top of the filter body. Once the movable fixing plate is completely disengaged, the fixing constraint on the top of the filter body is released, allowing maintenance personnel to easily remove the filter body from the filter body. The entire disassembly process requires no additional tools, making it simple and quick, significantly reducing filter disassembly time and improving maintenance efficiency. Traditional bolt fixing methods require tools and have high requirements for internal operating space. In contrast, this exhaust gas filter's disassembly is mainly achieved through an external knob and rotating rod, with less reliance on internal filter space. Even in confined spaces, maintenance personnel can easily disassemble the filter body, solving the problem of difficult disassembly due to limited operating space in traditional filters. Attached Figure Description

[0008] Figure 1This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 This utility model Figure 1 A magnified view of part A in the diagram;

[0010] Figure 3 This utility model Figure 1 A magnified view of part B in the diagram;

[0011] Figure 4 This is a three-dimensional view of the structure of the backing plate of this utility model.

[0012] In the diagram: 1. Filter body; 2. Inlet pipe; 3. Outlet pipe; 4. Trapezoidal block; 5. Filter element body; 6. Snap-fit ​​plate; 7. Sealing strip; 8. Top plate; 9. External plate; 10. Moving groove; 11. Snap-fit ​​block; 12. Movable groove; 13. Support plate; 14. Moving fixed plate; 15. Reset groove; 16. Reset elastic element; 17. Fixed groove; 18. Limiting slider; 19. Internal thread groove; 20. Rotating rod; 21. External thread; 22. Rotating plate; 23. Knob; 24. Arc-shaped positioning groove; 25. Positioning elastic element; 26. Sealing gasket; 27. Bottom plate; 28. Bottom groove; 29. ​​Snap-fit ​​groove. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4This utility model provides a technical solution: an exhaust gas filter that facilitates filter element replacement, comprising a filter body 1, trapezoidal blocks 4 fixedly connected to all four sides of the filter body 1, a filter element body 5 disposed at the center of the filter body 1, a top plate 8 fixedly connected to the top of the filter element body 5, the top plate 8 being snapped into the center of the top of the filter body 1, an outer plate 9 fixedly connected to the top of the top plate 8, a movable groove 10 being provided near the top of one side of each of the two trapezoidal blocks 4 located at the top, a movable fixing plate 14 being slidably connected to one side of the movable groove 10, and locking blocks 11 fixedly connected to the top and bottom of both sides of the filter element body 5, the opposite sides of the four locking blocks 11 being snapped into the opposite ends of the four trapezoidal blocks 4, and fixing grooves 17 being provided at the opposite ends of the two locking blocks 11 located at the top. Two movable fixing plates 14 are arranged on the left and right sides, respectively penetrating into the interior of the fixing groove 17 and engaging with the fixing groove 17. Movable grooves 12 are provided on both sides of the top of the filter body 1. A stop plate 13 is provided at the bottom of the movable groove 12. The bottom of the stop plate 13 penetrates into the interior of the movable groove 10 and contacts the bottom of the movable groove 10. One side of the movable fixing plate 14 contacts the bottom of one side of the stop plate 13. The end of the movable fixing plate 14 near the stop plate 13 is designed to be arc-shaped. The bottom end of the stop plate 13 is designed to be arc-shaped. An internal thread groove 19 is provided at the center of the top of the stop plate 13. A rotating rod 20 is provided at the top of the movable groove 12. An external thread 21 is provided at the bottom of the surface of the rotating rod 20. The external thread 21 penetrates into the interior of the internal thread groove 19 and is threadedly connected to the internal thread groove 19.

[0015] Both sides of the top plate 8 are movably fitted with positioning elastic elements 25. The top of the filter body 1 is provided with arc-shaped positioning grooves 24 on both sides of the top plate 8. One side of the positioning elastic element 25 extends into the interior of the arc-shaped positioning groove 24.

[0016] A bottom groove 28 is provided at the center of the bottom of the filter body 1. A bottom plate 27 is fixedly connected to the bottom of the filter element body 5. The bottom of the bottom plate 27 extends through the bottom groove 28 and engages with it. Engagement grooves 29 are provided on both sides of the bottom of the bottom plate 27. Engagement plates 6 are fixedly connected to both sides of the bottom of the bottom of the bottom groove 28. The top of the engagement plates 6 extends through the engagement grooves 29.

[0017] A sealing gasket 26 is fixedly connected to the center of the arc-shaped positioning groove 24. The inner wall of the sealing gasket 26 contacts one end of the positioning elastic element 25. A sealing strip 7 is fixedly connected to the top of the snap-fit ​​groove 29. The inner wall of the sealing strip 7 contacts the top of the snap-fit ​​plate 6.

[0018] The two trapezoidal blocks 4 located at the top are provided with reset slots 15 below the two moving slots 10. Reset elastic members 16 are movably assembled inside the reset slots 15. The top of the reset elastic members 16 is fixedly connected to the bottom of the moving fixed plate 14.

[0019] One side of the filter body 1 is connected to the air inlet pipe 2, and the other side of the filter body 1 is connected to the air outlet pipe 3.

[0020] Limiting sliders 18 are fixedly connected to the top positions on both sides of the abutment plate 13. The side of the limiting slider 18 away from the abutment plate 13 is slidably connected to the inner wall of the movable groove 12. The top of the rotating rod 20 extends through to the outside of the outer plate 9 and is threadedly connected to a knob 23. A rotating plate 22 is fixedly connected to the top position of the rotating rod 20. The rotating plate 22 is rotatably connected to the top of the filter body 1.

[0021] Working principle: During disassembly, maintenance personnel rotate the rotating rod 20 by rotating the knob 23, which extends through the top of the rotating rod 20 and is threaded to the outside of the outer plate 9. The rotating plate 22, which is fixedly connected to the top of the rotating rod 20, is rotatably connected to the top of the filter body 1, providing stable support for the rotating rod 20 and ensuring that the rotating rod 20 rotates smoothly within the movable groove 12. The bottom of the rotating rod 20 surface has an external thread 21, and the top center of the abutment plate 13 in the movable groove 12 has an internal thread groove 19. The external thread 21 passes through the internal thread groove 19 and is threadedly connected to it. When the rotating rod 20 rotates, the abutment plate 13 moves upward along the movable groove 12 under the action of the threaded engagement. The limiting sliders 18, which are fixedly connected to the top of both sides of the abutment plate 13, are slidably connected to the inner wall of the movable groove 12, restricting the movement direction of the abutment plate 13 and preventing the abutment plate 13 from collapsing. The offset or shaking ensures that the support plate 13 rises stably. Since the bottom end of the support plate 13 and the end of the movable fixing plate 14 near the support plate 13 are both designed to be arc-shaped, during the rise of the support plate 13, its arc-shaped end generates an upward component force on the arc-shaped end of the movable fixing plate 14, pushing the movable fixing plate 14 to slide downward in the movable groove 10, gradually disengaging from the fixing groove 17 on the top locking block 11 of the filter element body 5. When the movable fixing plate 14 is completely disengaged from the fixing groove 17, the fixing constraint on the top of the filter element body 5 is released. At this time, the maintenance personnel can lift the outer plate 9 upward, driving the top plate 8 and the filter element body 5 to move upward as a whole, so that the bottom plate 27 is pulled out from the bottom groove 28, the locking plate 6 is disengaged from the locking groove 29, and the positioning elastic element 25 is pulled out from the arc-shaped positioning groove 24, thereby easily removing the filter element body 5 from the filter body 1 and completing the disassembly operation of the filter element body 5.

[0022] In summary: This exhaust gas filter, which facilitates filter element replacement, only requires rotating the knob 23 to rotate the rotating rod 20. The external thread 21 engages with the internal thread groove 19 on the abutment plate 13, causing the abutment plate 13 to move upwards along the movable groove 12. Since the abutment plate 13 contacts the arc-shaped end of the movable fixing plate 14, during its upward movement, the arc-shaped end of the abutment plate 13 generates an upward component force on the arc-shaped end of the movable fixing plate 14, pushing the movable fixing plate 14 to slide within the movable groove 10. This gradually disengages it from the fixing groove 17 on the top locking block 11 of the filter element body 5. Once the movable fixing plate 14 is completely disengaged from the fixing groove 17, the filter element body 5... With the top fixing restraints released, maintenance personnel can easily remove the filter element body 5 from the filter body 1. The entire disassembly process requires no additional tools, making the operation simple and quick, greatly shortening the filter element disassembly time and improving maintenance efficiency. Traditional bolt fixing methods require tools and have high requirements for the internal operating space of the filter. However, the disassembly operation of this exhaust gas filter is mainly achieved through the external knob 23 and rotating rod 20, which has less dependence on the internal space of the filter. Even in situations where the internal space of the filter is relatively narrow, maintenance personnel can easily complete the filter element disassembly, solving the problem of difficult disassembly of traditional filters due to limited operating space.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas filter that facilitates filter element replacement, comprising a filter body (1), characterized in that: Trapezoidal blocks (4) are fixedly connected to all four sides of the filter body (1). A filter element body (5) is set in the center of the filter body (1). A top plate (8) is fixedly connected to the top of the filter element body (5). The top plate (8) is snapped into the center of the top of the filter body (1). An external plate (9) is fixedly connected to the top of the top plate (8). A moving groove (10) is opened on the top side of the two trapezoidal blocks (4) located at the top. A moving fixing plate (14) is slidably connected to one side of the moving groove (10). A locking block (11) is fixedly connected to the top and bottom of both sides of the filter element body (5). The opposite sides of the four locking blocks (11) are snapped into the opposite ends of the four trapezoidal blocks (4). A fixing groove (17) is opened on the opposite ends of the two locking blocks (11) located at the top. The opposite sides of the two moving fixing plates (14) located on the left and right respectively penetrate through the two locking plates (14). The filter body (1) is connected to the fixed groove (17) and is engaged with the fixed groove (17). The top of the filter body (1) is provided with movable grooves (12) on both sides. The bottom of the movable groove (12) is provided with a stop plate (13). The bottom of the stop plate (13) extends into the movable groove (10) and contacts the bottom of the movable groove (10). One side of the movable fixed plate (14) contacts the bottom of one side of the stop plate (13). The movable fixed plate (14) is designed with an arc shape at the end near the stop plate (13). The bottom of the stop plate (13) is designed with an arc shape. The center of the top of the stop plate (13) is provided with an internal thread groove (19). The top of the movable groove (12) is provided with a rotating rod (20). The bottom of the surface of the rotating rod (20) is provided with an external thread (21). The external thread (21) extends into the interior of the internal thread groove (19) and is threadedly connected to the internal thread groove (19).

2. The exhaust gas filter with easy filter element replacement according to claim 1, characterized in that: Positioning elastic elements (25) are movably mounted on both sides of the top plate (8). The top of the filter body (1) is provided with arc-shaped positioning grooves (24) on both sides of the top plate (8). One side of the positioning elastic element (25) extends into the interior of the arc-shaped positioning groove (24). A sealing gasket (26) is fixedly connected to the center of the arc-shaped positioning groove (24). The inner wall of the sealing gasket (26) is in contact with one end of the positioning elastic element (25).

3. The exhaust gas filter with easy filter element replacement according to claim 1, characterized in that: The filter body (1) has a bottom groove (28) at the center of its bottom. The bottom of the filter element body (5) is fixedly connected to a bottom plate (27). The bottom of the bottom plate (27) extends into the bottom groove (28) and engages with it. The bottom of the bottom plate (27) has engagement grooves (29) on both sides. The bottom of the bottom of the bottom groove (28) has engagement plates (6) on both sides. The top of the engagement plates (6) extends into the engagement grooves (29).

4. The exhaust gas filter with easy filter element replacement according to claim 3, characterized in that: A sealing strip (7) is fixedly connected to the top of the snap-fit ​​groove (29), and the inner wall of the sealing strip (7) is in contact with the top of the snap-fit ​​plate (6).

5. The exhaust gas filter with easy filter element replacement according to claim 1, characterized in that: The two trapezoidal blocks (4) located at the top are provided with reset slots (15) below the two moving slots (10). The reset slots (15) are movably fitted with reset elastic members (16). The top of the reset elastic members (16) is fixedly connected to the bottom of the moving fixed plate (14).

6. The exhaust gas filter with easy filter element replacement according to claim 1, characterized in that: One side of the filter body (1) is connected to an air inlet pipe (2), and the other side of the filter body (1) is connected to an air outlet pipe (3).

7. The exhaust gas filter with easy filter element replacement according to claim 1, characterized in that: Limiting sliders (18) are fixedly connected to the top positions on both sides of the abutment (13). The side of the limiting slider (18) away from the abutment (13) is slidably connected to the inner wall of the movable groove (12). The top of the rotating rod (20) extends through to the outside of the outer plate (9) and is threadedly connected to a knob (23). A rotating plate (22) is fixedly connected to the top position of the rotating rod (20). The rotating plate (22) is rotatably connected to the top of the filter body (1).

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