A filter bag mounting and bag mouth sealing device

Abstract

The application relates to the technical field of filter bag mounting, in particular to a filter bag mounting bag opening sealing device, a first sealing assembly arranged between a bag body and a flower plate, the first sealing assembly comprising an outer ring piece, an inner ring piece and a first spring connecting the outer ring piece and the inner ring piece, the outer ring piece is fixedly connected with the flower plate, the inner ring piece is tightly attached to the bag body through the first spring, in a use state, the first spring always keeps a compressed state, the inner ring piece is a ring structure with adjustable radius, a second sealing assembly arranged above the outer ring piece and the inner ring piece, the second sealing assembly comprising a ring-shaped sealing plate, a threaded column fixed on the ring-shaped sealing plate, a second spring sleeved on the threaded column, a convex ring body, a pressing block and a rod body; through the structural collocation of the first sealing assembly and the second sealing assembly, the gap between the filter bag body and the flower plate is sealed, the sealing effect is good, and the mounting process is simple.

Description

Technical Field

[0001] This invention relates to the field of filter bag installation technology, and more specifically to a filter bag installation bag opening sealing device. Background Technology

[0002] Currently, bag filters are the main dust removal technology. Filter bags generally consist of a bag body and a cage placed inside the bag body. The cage can expand the internal space of the bag body. The bag body is installed in the perforated structure of the tube sheet. In actual use, the seal between the tube sheet perforation and the bag body is not sufficient. A small amount of dust can enter the clean air chamber through the gap between the filter bag and the tube sheet perforation, which will affect the subsequent emissions. Summary of the Invention

[0003] The present invention provides a filter bag installation bag opening sealing device to solve the defects in the above-mentioned background art.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] The filter bag is equipped with a bag opening sealing device, including:

[0006] The first sealing assembly is disposed between the bag body and the perforated plate. The first sealing assembly includes an outer ring, an inner ring, and a first spring connecting the outer ring and the inner ring. The outer ring is fixedly connected to the perforated plate, and the inner ring is tightly fitted to the bag body by the first spring. In use, the first spring is always kept in a compressed state. The inner ring is an annular structure with an adjustable radius.

[0007] The second sealing assembly is disposed above the outer ring and the inner ring. The second sealing assembly includes an annular sealing plate, a threaded post fixed to the annular sealing plate, and a second spring sleeved on the threaded post. The annular sealing plate is connected to the outer ring and the inner ring. The second sealing assembly also includes a convex ring body, a clamping block, and a rod body. The convex ring body is connected to the top of the cage and has a first threaded structure. The clamping block has a second threaded structure adapted to the first threaded structure. The top of the clamping block has a mounting ear. The end of the rod body is connected to the mounting ear, and the rod body has a through hole for the threaded post to pass through. The threaded post is sleeved with a suitable nut so that the second spring is always kept in a stretched state during use.

[0008] Preferably, the inner ring component includes a mounting body and a rotating body. The rotating body is embedded inside the mounting body and can rotate along the circumference of the mounting body. In use, the mounting body is connected to the first spring, and the rotating body is in contact with the bag body. The cross-section of the mounting body is a concave structure with a limiting part, and the cross-section of the rotating body is a convex structure with a locking part that is adapted to the concave structure.

[0009] Preferably, the rotating body is provided with a slot, which can engage with the cage body.

[0010] Preferably, in one configuration, the rods are tilted so that multiple rods are combined to form a conical shape.

[0011] Preferably, the inner ring is provided with a strip groove, and the annular sealing plate is provided with a corresponding circular hole. The circular hole and the strip groove are connected by a locking member. The locking member includes a vertical rod, a strip-shaped locking block and a limiting block. The strip-shaped locking block is connected to the bottom of the vertical rod, and the limiting block is located at the top of the vertical rod. In use, the strip-shaped locking block is embedded in the strip groove, and the limiting block is located above the annular sealing plate.

[0012] Preferably, a connector is provided on the outer side of the outer ring, and the connector is fixedly connected to the tube sheet.

[0013] Preferably, the outer surface of the clamping block has a smooth arc-shaped structure.

[0014] Preferably, the cross-section of the convex ring is L-shaped, and in use, the clamping block presses the opening of the bag tightly against the surface of the convex ring.

[0015] Preferably, a protective layer is provided between the rotating body and the bag body.

[0016] The above-described technical solution of the present invention has the following beneficial technical effects:

[0017] This invention achieves a seal between the filter bag body and the perforated plate through the structural combination of a first sealing component and a second sealing component. It has a good sealing effect and a simple installation process. The inner ring and outer ring are both annular structures with adjustable radii, connected by a first spring. This ensures that the first sealing component, formed by the inner and outer ring components in a free state, has a standard size. The size range of the first sealing component can be determined by the stretching and contraction limit of the first spring to accommodate perforated plate holes of different sizes. The structural design of the second sealing component, combined with the first sealing component, can achieve the effects of installation guidance, sealing fixation, and improving the overall stability of the filter bag. Attached Figure Description

[0018] Figure 1 This is an overall sectional view of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the rod body in one state according to the present invention;

[0020] Figure 3 This is a schematic diagram of the combined structure of the first sealing component and the second sealing component of the present invention;

[0021] Figure 4This is a schematic diagram of the combination structure of the locking member and the inner ring member in one embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 6 This is a cross-sectional view of the first sealing component of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of the clamping block and the convex ring body of the present invention;

[0025] Figure 8 This is a three-dimensional structural diagram of the first sealing component of the present invention from one perspective;

[0026] Figure 9 This is a schematic diagram of the card slot position structure in one embodiment of the present invention. Detailed Implementation

[0027] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Furthermore, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of this invention.

[0028] This invention provides a filter bag installation bag opening sealing device, a first sealing assembly disposed between the bag body 1 and the tube sheet 8, the first sealing assembly including an outer ring 41, an inner ring 42 and a first spring 43 connecting the outer ring 41 and the inner ring 42, the outer ring 41 being fixedly connected to the tube sheet 8, the inner ring 42 being tightly fitted to the bag body 1 by the first spring 43, the first spring 43 always being kept in a compressed state in use, and the inner ring 42 being an annular structure with an adjustable radius;

[0029] For example, it could be a ring structure composed of multiple block-shaped parts connected by one or more elastic elements (not shown in the attached figure), and it is conceivable that the elastic element could be a spring, an elastic rope, etc.

[0030] The first spring 43 is always in a compressed state and has outward tension, the purpose of which is to make the inner ring 42 always squeeze and clamp the bag body 1.

[0031] The second sealing assembly is disposed above the outer ring 41 and the inner ring 42. The second sealing assembly includes an annular sealing plate 5, a threaded post 51 fixed on the annular sealing plate 5, and a second spring 52 sleeved on the threaded post 51. The annular sealing plate 5 is connected to the outer ring 41 and the inner ring 42. The second sealing assembly also includes a convex ring body 21, a clamping block 3, and a rod body 6. The convex ring body 21 is connected to the top of the cage body 2 and is provided with a first threaded structure 22. The clamping block 3 is provided with a second threaded structure 32 adapted to the first threaded structure 22. The top of the clamping block 3 is provided with a mounting ear 31. The end of the rod body 6 is connected to the mounting ear 31, and the rod body 6 is provided with a through hole for the threaded post 51 to pass through. The threaded post 51 is sleeved with a suitable nut 7. In use, the second spring 52 is always kept in a stretched state.

[0032] In one specific implementation, such as Figure 4 As shown, the inner ring 42 is provided with a strip groove 424, and the annular sealing plate 5 is provided with a corresponding circular hole. The circular hole and the strip groove 424 are connected by a locking member 45. The locking member 45 includes a vertical rod 451, a strip-shaped locking block 452 and a limiting block 453. The strip-shaped locking block 452 is connected to the bottom of the vertical rod 451, and the limiting block 453 is located at the top of the vertical rod 451. In use, the strip-shaped locking block 452 is embedded in the strip groove 423, and the limiting block 453 is located above the annular sealing plate 5.

[0033] The strip-shaped locking block 452 can slide within the strip-shaped groove 424, and the tail end of the strip-shaped groove 424 is provided with a limiting structure to limit the sliding position of the strip-shaped locking block 452. In this application, the width of the strip-shaped locking block 452 corresponds to the width of the upper opening of the strip-shaped groove 424, so that after the strip-shaped locking block 452 is inserted, rotating the strip-shaped locking block 452 can make the strip-shaped locking block 452 clamp the annular sealing plate 5 and the inner ring member 42.

[0034] During this process, because the second spring 52 is always in a stretched state, it always has an inward pulling force, which prevents the strip-shaped locking block 452 from rotating freely. Furthermore, the strip-shaped locking block 452 can be used in conjunction with the strip-shaped groove 424 without affecting the clamping effect of the inner ring 42 on the bag body 1 (even if the top is sealed and fixed by the annular sealing plate 5, the function of the first spring 42 is not affected).

[0035] like Figure 3As shown, the inner ring 42 includes a mounting body 421 and a rotating body 422. The rotating body 422 is embedded inside the mounting body 421 and can rotate along the circumference of the mounting body 421. In use, the mounting body 421 is connected to the first spring 43, and the rotating body 422 is in contact with the bag body 1. The cross-section of the mounting body 421 is a concave structure with a limiting part, and the cross-section of the rotating body 422 is a convex structure with a locking part that is adapted to the concave structure.

[0036] In the above embodiments, since the inner ring 42 is an adjustable-radius ring structure, the shape and structure of the mounting body 421 and the rotating body 422 should be adapted.

[0037] Under the action of the rotating body 422, the bag body (cage) can rotate freely during the installation process.

[0038] In some embodiments, a slot 424 is provided on the rotating body 422, which can engage with the cage body 2.

[0039] The purpose is that, since the bag body 1 is fitted over the cage body 2, the slot 424 engages the parts of the bag body 1 that come into contact with the frame of the cage body 2 together, so that the bag body 1 and the rotating body 422 are connected more tightly. In addition, it reduces the area of ​​free movement of the bag body 1 to a certain extent and prevents the bag body 1 from wrinkling.

[0040] like Figure 2 As shown, in one state, the rod 6 is inclined so that multiple rods are combined to form a conical shape.

[0041] Especially when the bag body 1 passes through the inner ring 42, the conical structure makes it easy for the first spring 43 to be compressed when the bag body 1 passes through the inner ring 424, thereby facilitating the insertion of the cage body 2 (bag body 1).

[0042] It should be noted that the rod body 6 and the mounting ear 31 are loosened / tightened via a locking bolt. After the cage body 2 (bag body 1) passes through the inner ring 42, the locking bolt is loosened until the rod body 6 is horizontal, and then tightened, as shown in the following figure. Figure 1 As shown.

[0043] A connector 411 is provided on the outer side of the outer ring 41, and the connector 411 is fixedly connected to the flower plate 8.

[0044] The outer surface of the clamping block 3 has a smooth arc-shaped structure, which makes it easier for the cage body 2 (bag body 1) to pass through the inner ring 42.

[0045] The convex ring 21 has an L-shaped cross-section. In use, the clamping block 3 presses the opening of the bag body 1 tightly against the surface of the convex ring 21.

[0046] When cleaning bag 1, it is necessary to inflate it with air or other methods to increase air pressure, so that bag 1 expands and cleans the dust and other particles on the surface of bag 1. However, during long-term operation, the openings of some filter bags may become loose, affecting the filtration effect.

[0047] Therefore, one function of the clamping block 3 is to cooperate with the rod 6 to achieve the engagement with the first sealing assembly. Another purpose is to compress and tighten the opening of the bag body 1 onto the surface of the convex ring 21, thereby further improving the stability and sealing performance of the bag body 1.

[0048] Furthermore, a protective layer can be provided between the rotating body 422 and the bag body 1 to prevent wear between the inner ring 42 and the bag body 1.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter bag installation bag opening sealing device, characterized in that, include: The first sealing assembly is disposed between the bag body (1) and the flower plate (8). The first sealing assembly includes an outer ring (41), an inner ring (42), and a first spring (43) connecting the outer ring (41) and the inner ring (42). The outer ring (41) is fixedly connected to the flower plate (8), and the inner ring (42) is tightly fitted to the bag body (1) by the first spring (43). In use, the first spring (43) is always kept in a compressed state. The inner ring (42) is an annular structure with an adjustable radius. A second sealing assembly is disposed above the outer ring (41) and the inner ring (42). The second sealing assembly includes an annular sealing plate (5), a threaded post (51) fixed to the annular sealing plate (5), and a second spring (52) sleeved on the threaded post (51). The annular sealing plate (5) is connected to the outer ring (41) and the inner ring (42). The second sealing assembly also includes a convex ring body (21), a clamping block (3), and a rod body (6). The convex ring body (21) is connected to... The cage (2) is provided with a first threaded structure (22) at the top. The clamping block (3) is provided with a second threaded structure (32) that is compatible with the first threaded structure (22). The top of the clamping block (3) is provided with a mounting ear (31). The end of the rod (6) is connected to the mounting ear (31). The rod (6) is provided with a through hole for the threaded post (51) to pass through. The threaded post (51) is fitted with a matching nut (7). In use, the second spring (52) is always kept in a stretched state.

2. The filter bag installation bag opening sealing device according to claim 1, characterized in that, The inner ring component (42) includes a mounting body (421) and a rotating body (422). The rotating body (422) is embedded in the inner side of the mounting body (421) and can rotate along the circumference of the mounting body (421). In use, the mounting body (421) is connected to the first spring (43), and the rotating body (422) is in contact with the bag body (1). The cross-section of the mounting body (421) is a concave structure with a limiting part, and the cross-section of the rotating body (422) is a convex structure with a locking part that is adapted to the concave structure.

3. The filter bag installation bag opening sealing device according to claim 2, characterized in that, The rotating body (422) is provided with a slot (423), which can engage with the cage body (2).

4. The filter bag installation bag opening sealing device according to claim 1, characterized in that, In one state, the rod (6) is tilted so that multiple rods are combined into a conical shape.

5. A filter bag installation bag opening sealing device according to claim 1, characterized in that, The inner ring (42) is provided with a strip groove (424), and the annular sealing plate (5) is provided with a corresponding round hole. The round hole and the strip groove (424) are connected by a locking member (45). The locking member (45) includes a vertical rod (451), a strip block (452), and a limiting block (453). The strip block (452) is connected to the bottom of the vertical rod (451), and the limiting block (453) is located at the top of the vertical rod (451). In use, the strip block (452) is embedded in the strip groove (423), and the limiting block (453) is located above the annular sealing plate (5).

6. The filter bag installation bag mouth sealing device according to claim 1, characterized in that, A connector (411) is provided on the outer side of the outer ring (41), and the connector (411) is fixedly connected to the flower plate (8).

7. A filter bag installation bag opening sealing device according to claim 1, characterized in that, The outer surface of the clamping block (3) is a smooth arc-shaped structure.

8. A filter bag installation bag opening sealing device according to claim 1, characterized in that, The cross-section of the convex ring (21) is L-shaped. In use, the pressing block (3) presses the opening of the bag (1) tightly against the surface of the convex ring (21).

9. A filter bag installation bag opening sealing device according to claim 1, characterized in that, A protective layer is also provided between the rotating body (422) and the bag body (1).

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