Chemical dust removal needle felt filter bag

Abstract

The utility model is suitable for chemical technology field provides a kind of needle felt filter bag for chemical dust removal, including: mounting support, its top wall is equipped with air hole, and the bottom wall of mounting support is surrounded by the air hole vertical solid connection with multiple support skeletons, filter bag assembly, it has: filter bag body and the fixed ring of the outside of the top end of filter bag body around solid connection, filter bag body is set outside multiple support skeletons, and fixed ring and mounting support are detachably connected between through fixed mechanism, the mutual cooperation of first inclined plane and second inclined plane extrude plug block to movable cavity, and first spring compression simultaneously, when the bottom end of insertion rod passes through plug block and lock groove and plug block are flush after locking, first spring rebound pushes plug block and inserts into lock groove and limits filter bag body, ensure the stability of assembly between mounting support and filter bag assembly.

Description

Technical Field

[0001] This utility model belongs to the field of chemical technology, and in particular relates to a needle-punched felt filter bag for chemical dust removal. Background Technology

[0002] Needle-punched felt filter bags (dust collector bags) are a crucial component in the operation of baghouse dust collectors. The fabric and design of needle-punched felt filter bags aim for high-efficiency filtration, easy dust removal, and durability. Needle-punched felt filter bags possess the advantages of ordinary felt filter cloths, such as high porosity, good air permeability, and high dust collection efficiency.

[0003] Chinese utility model patent CN218392830U discloses a needle-punched felt filter bag for chemical dust removal, comprising a filter bag body, a fixing plate bonded to the upper end of the filter bag body, a mounting base provided at the upper end of the filter bag body, a mounting groove formed on the lower side of the mounting base, the fixing plate inserted into the mounting groove, a limiting device provided between the fixing plate and the mounting base, an external thread provided on the outer wall of the mounting base, a fixing base mounted on the mounting base, a threaded hole formed on the fixing base, and the fixing base and the mounting base being screwed together through the threaded hole and the external thread, the bottom of the fixing plate being located in the threaded hole, an air inlet formed on the mounting base, the limiting device including limiting blocks, limiting grooves formed on both the left and right sides above the mounting groove, and limiting blocks formed on both the left and right sides of the upper end of the fixing plate. This utility model is convenient to use and facilitates the rapid replacement of needle-punched felt filter bags in baghouse dust collectors in chemical plants.

[0004] However, the above-mentioned device has the following technical problems in actual use:

[0005] 1. When assembling the filter bag using the above-mentioned device, the mounting plate must first be placed against the bottom of the mounting base and aligned with the mounting groove. Then, the filter bag is manually held in position before the fixing base is placed on the bottom of the mounting plate. Rotating the fixing base allows the threads to mesh, securing the fixing base and the mounting base together. This limits the position of the mounting plate in the middle, ensuring the stability of the assembled filter bag. However, in this method, the filter bag is simply fitted onto the outside of the support frame during assembly, requiring manual support to prevent separation between the filter bag and the support frame. Furthermore, the device lacks a fixing mechanism for the filter bag after it is fitted, making it difficult for manual workers to easily complete the subsequent assembly of the fixing base.

[0006] Second, the above-mentioned device is equipped with filter bags (mounting plates), mounting bases and fixing bases respectively, and the three parts exist as separate entities. When the above-mentioned device is disassembled, there are many disassembled parts, which may lead to the loss of parts, and the subsequent reassembly is also more complicated. Utility Model Content

[0007] This utility model provides a needle-punched felt filter bag for chemical dust removal, aiming to solve the problems mentioned in the background art. In the above-mentioned device, the filter bag is simply put on the outside of the support frame during assembly, and manual support is required to prevent the filter bag from separating from the support frame. In addition, the above-mentioned device lacks a fixing device for the filter bag after it is put on. Furthermore, the above-mentioned device has many disassembled parts, which may lead to loss and is also cumbersome to reassemble.

[0008] This utility model is implemented as follows: a needle-punched felt filter bag for chemical dust removal includes: a mounting support with vent holes on its top wall; multiple support frames vertically fixed around the vent holes on the bottom wall of the mounting support; and a filter bag assembly having: a filter bag body and a fixing ring fixed around the outer side of the top of the filter bag body. The filter bag body is fitted onto the outer side of the multiple support frames, and the fixing ring and the mounting support are detachably connected by a fixing mechanism. The fixing mechanism includes: multiple insert rods arranged around the outer side of the vent holes and fixed to the bottom wall of the mounting support; and multiple slots for accommodating the insert rods on the top wall of the fixing ring. A locking assembly for locking the insert rod is provided on the outer wall corresponding to the slot. In this scheme, when assembling the filter bag body, the fixing ring on the outside of the filter bag body is abutted against the bottom of the mounting support, and the insert rod is inserted into the slot. The first inclined surface and the second inclined surface cooperate to press the insert block into the movable cavity. At the same time, the first spring is compressed. When the bottom end of the insert rod passes the insert block and the locking groove is flush with the insert block, the first spring rebounds and pushes the insert block into the locking groove to limit the filter bag body, ensuring the stability of the assembly between the mounting support and the filter bag assembly. When adjusting the fastening mechanism later, the manual support of the filter bag body is no longer required, freeing up the manual hands and facilitating the operation of subsequent parts.

[0009] Furthermore, the device is divided into an installation support and a filter bag body. Each component is installed on two separate parts frames, which are easy to handle and assemble. No small parts will be lost during disassembly, reducing the possibility of component loss and effectively ensuring the integrity of the parts after disassembly and reassembly.

[0010] Preferably, the locking assembly includes: a fixed cylinder fixed to the outer wall of the fixing ring; a movable cavity communicating with the slot is opened inside the fixed cylinder; a locking rod is slidably connected inside the movable cavity; an insert block is fixedly connected to the end of the locking rod facing the slot; a locking groove is opened on the side wall of the insert block corresponding to the movable cavity; a limiting ring is also fixedly connected to the outer wall of the locking rod and slidably connected inside the movable cavity; a first spring is sleeved on the outer side of the locking rod on the side of the limiting ring away from the insert block; in this solution, when assembling the filter bag body, the fixing ring... The insert block fits snugly against the bottom of the mounting bracket, allowing the insertion rod at the bottom of the mounting bracket to be inserted into the slot. As the insertion rod is inserted, the locking rod can be manually pulled outward from the fixed cylinder, causing the insert block to retract into the movable cavity. This facilitates the movement of the bottom end of the insertion rod to the bottom of the slot. Once the locking groove and the movable cavity are aligned, the compressed first spring rebounds and pushes the limiting ring to reset. The limiting ring then drives the locking rod, which is fixed to it, to reset, allowing the insert block to be inserted into the locking groove to limit the insertion rod. This effectively prevents the insertion rod from separating from the slot, thus ensuring the stability of the connection between the filter bag assembly and the mounting bracket after assembly.

[0011] It should be noted that, in this device, because a support frame is provided on the outside of the air vent, during actual installation, the filter bag body is fitted on the outside of multiple support frames, and the support frames are attached to the inner peripheral wall of the filter bag body, thereby expanding the filter bag body.

[0012] Preferably, the insert block has a first inclined surface on its top sidewall facing the insert rod, and the bottom end of the insert rod has a second inclined surface that fits into the first inclined surface. In this design, when the insert rod is inserted into the slot and moves downward, the second inclined surface will contact the first inclined surface, thereby pushing the insert block to move into the movable cavity. This reduces the amount of manual labor required to pull the locking rod during assembly and lowers the intensity of manual labor.

[0013] Preferably, the assembly further includes a fastening mechanism for limiting the position of the filter bag assembly after assembly. The fastening mechanism comprises: an annular ring fixedly installed on the outer peripheral wall of the top end of the fixing ring; multiple movable grooves circumferentially formed on the mounting support outside the vent hole; a guide rod fixedly connected to each movable groove; a movable block slidably connected to the movable groove and sleeved on the guide rod; a second spring sleeved on the outer side of the guide rod on the side of the movable block away from the vent hole; and a receiving block fixedly connected to the bottom wall of the movable block, with one end of the receiving block facing the filter bag. The component extends and abuts against the bottom of the annular ring. In this scheme, during the pre-assembly of the filter bag assembly, multiple moving blocks will move along the moving groove to the side away from the air vent, avoiding the receiving block from blocking the annular ring. After the filter bag assembly is assembled, the annular ring is attached to the bottom wall of the mounting support and located above the receiving block. At this time, the restriction on the moving block is released, and the squeezed second spring rebounds to push the moving block to reset. At the same time, it drives the receiving block to move and abut against the bottom of the annular ring, supporting and limiting the annular ring, further preventing the filter bag assembly and the mounting support from separating.

[0014] It should be noted that this device uses two connection methods—insertion rod and slot, and receiving block and ring—to enhance the tightness of the connection between the filter bag assembly and the mounting support, thereby strengthening the connection and preventing loosening or falling off.

[0015] Preferably, each of the movable blocks has a movable plate fixedly attached to its top, and one end of the movable plate extends toward the vent. A first limiting groove is formed on the top wall of the movable plate. Multiple sliding holes are also formed around the vent on the top wall of the mounting support. A sliding rod is slidably connected in the sliding hole. A limiting ring is fixedly attached to the top of the multiple sliding rods. The limiting ring is located above the multiple movable plates, and a limiting block is fixedly attached to its bottom wall corresponding to the first limiting groove. In this scheme, when the receiving block is at the bottom of the annular ring, the limiting block is inserted into the first limiting groove. When the receiving block is away from the annular ring, the limiting block is inserted into the second limiting groove. The sliding rod can move vertically up and down in the sliding hole, thereby driving the limiting ring to move up and down, so that the limiting block is disengaged from the first limiting groove (second limiting groove). When the limiting block is inserted into the first limiting groove, the movable plate is restricted from moving along the movable groove. When the limiting block is inserted into the second limiting groove, the movable plate will be on the side of the movable groove away from the vent.

[0016] Preferably, a second limiting groove is also provided on the movable plate near the air vent of the first limiting groove. When the second limiting groove and the limiting block are inserted into each other, the receiving block is away from the annular ring. In this scheme, when the limiting block is inserted into the second limiting groove, the movable plate will be on the side of the movable groove away from the air vent, and the receiving block will be detached from the bottom of the annular ring, which facilitates the disassembly and assembly of the filter bag body.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a needle-punched felt filter bag for chemical dust removal.

[0018] 1. When assembling the filter bag body, the fixing ring on the outside of the filter bag body is placed against the bottom of the mounting bracket, and the insertion rod is inserted into the slot. The first and second inclined surfaces cooperate to press the insertion block into the movable cavity. At the same time, the first spring is compressed. When the bottom end of the insertion rod passes through the insertion block and is flush with the locking groove, the first spring rebounds and pushes the insertion block into the locking groove to limit the filter bag body, ensuring the stability of the assembly between the mounting bracket and the filter bag assembly. When adjusting the fastening mechanism later, the manual support of the filter bag body is no longer required, freeing up the manual labor and facilitating the operation of subsequent parts.

[0019] 2. The device is divided into an installation support and a filter bag body. Each component is installed on two separate parts frames, which are easy to handle and assemble. No small parts will be lost during disassembly, reducing the possibility of component loss and effectively ensuring the integrity of the parts after disassembly and reassembly. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the present invention;

[0021] Figure 2 This is a schematic diagram of the filter bag assembly in this utility model;

[0022] Figure 3 This is a schematic diagram of the mounting bracket in this utility model;

[0023] Figure 4 This utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0024] Figure 5 This is a partial structural diagram of the mounting support in this utility model;

[0025] In the picture:

[0026] 1. Mounting bracket; 11. Ventilation holes; 12. Support frame;

[0027] 2. Filter bag assembly; 21. Filter bag body; 22. Fixing ring;

[0028] 3. Fixing mechanism; 31. Insert rod; 32. Slot; 321. Second inclined surface; 33. Locking assembly; 331. Fixing cylinder; 332. Movable cavity; 333. Locking rod; 334. Insert block; 3341. First inclined surface; 335. Locking groove; 336. Limiting ring; 337. First spring;

[0029] 4. Fastening mechanism; 41. Annular ring; 42. Moving groove; 421. Guide rod; 43. Moving block; 431. Second spring; 44. Receiving block; 45. Moving plate; 451. First limiting groove; 452. Second limiting groove; 46. Sliding hole; 461. Sliding rod; 462. Limiting ring; 47. Limiting block. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0031] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Please see Figure 1-5This utility model provides a technical solution: a needle-punched felt filter bag for chemical dust removal, comprising: a mounting support 1, the top wall of which has a vent hole 11, and a plurality of support frames 12 vertically fixed around the vent hole 11 on the bottom wall of the mounting support 1; and a filter bag assembly 2, which has: a filter bag body 21 and a fixing ring 22 fixed around the top outer side of the filter bag body 21. The filter bag body 21 is sleeved on the outside of the plurality of support frames 12, and the fixing ring 22 and the mounting support 1 are detachably connected by a fixing mechanism 3. The fixing mechanism 3 has: a plurality of insert rods 31 arranged around the outside of the vent hole 11 and fixed to the bottom wall of the mounting support 1; a plurality of slots 32 for accommodating the insert rods 31 are opened on the top wall of the fixing ring 22; and a locking assembly 33 for locking the insert rods 31 is provided on the outer wall of the fixing ring 22 corresponding to the slots 32.

[0036] Specifically, in this device, the support frame 12 fits into the ventilation hole 11 and is distributed around the bottom of the mounting bracket 1, while multiple insert rods 31 are arranged on the outside of multiple support frames 12.

[0037] In addition, the top of the mounting bracket 1 in this device is provided with a recessed part. The outer edge of the recessed part (mounting bracket 1) is higher than the center of the top wall of the mounting bracket 1, which facilitates the installation of the mounting bracket 1. At the same time, the recessed part can ensure the installation of the limiting ring 462, and the height of the limiting ring 462 is lower than the height of the recessed part.

[0038] Furthermore, the locking assembly 33 includes: a fixed cylinder 331 fixed to the outer wall of the fixed ring 22, a movable cavity 332 with a connecting slot 32 inside the fixed cylinder 331, a locking rod 333 slidably connected inside the movable cavity 332, an insert block 334 fixedly connected to the end of the locking rod 333 facing the slot 32, a locking groove 335 being provided on the side wall of the insert rod 31 corresponding to the movable cavity 332, a limiting ring 336 slidably connected to the outer wall of the locking rod 333 and slidably connected inside the movable cavity 332, and a first spring 337 being sleeved on the outer side of the locking rod 333 on the side of the limiting ring 336 away from the insert block 334.

[0039] Specifically, in this device, the end of the locking rod 333 away from the movable cavity 332 extends to the outside of the fixed cylinder 331, and a handle is fixedly installed on its end. A person can manually grasp the handle to drive the locking rod 333 to move to the outside of the fixed cylinder 331, thereby pulling the insert block 334 into the movable cavity 332.

[0040] Furthermore, the top side wall of the insertion block 334 facing the insertion rod 31 is provided with a first inclined surface 3341, and the bottom end of the insertion rod 31 is provided with a second inclined surface 321 that fits into the first inclined surface 3341.

[0041] Furthermore, it also includes a fastening mechanism 4 that limits the position of the filter bag assembly 2 after assembly. The fastening mechanism 4 has: an annular ring 41 fixedly installed on the outer peripheral wall of the top of the fixing ring 22; multiple moving grooves 42 are opened around the mounting support 1 outside the vent hole 11; a guide rod 421 is fixedly connected in each moving groove 42; a moving block 43 is sleeved on the guide rod 421 and slidably connected to the moving groove 42; a second spring 431 is sleeved on the outer side of the guide rod 421 on the side of the moving block 43 away from the vent hole 11; a receiving block 44 is fixedly connected to the bottom wall of the moving block 43; one end of the receiving block 44 extends toward the filter bag assembly 2 and abuts against the bottom of the annular ring 41.

[0042] Furthermore, each movable block 43 has a movable plate 45 fixedly attached to its top end, and one end of the movable plate 45 extends toward the vent hole 11. A first limiting groove 451 is provided on the top wall of the movable plate 45. Multiple sliding holes 46 are also provided around the vent hole 11 on the top wall of the mounting support 1. A sliding rod 461 is slidably connected in the sliding hole 46. A limiting ring 462 is fixedly attached to the top end of the multiple sliding rods 461. The limiting ring 462 is located above the multiple movable plates 45, and a limiting block 47 is fixedly attached to its bottom wall corresponding to the first limiting groove 451.

[0043] Furthermore, a second limiting groove 452 is also provided on the movable plate 45 near the vent hole 11 of the first limiting groove 451. When the second limiting groove 452 and the limiting block 47 are inserted and engaged, the receiving block 44 moves away from the annular ring 41.

[0044] Working principle and usage process of this utility model:

[0045] When assembling the filter bag body 21, first pull the moving plate 45 to move it away from the air vent 11, then move the second limiting groove 452 to below the limiting block 47, and then move the limiting ring 462 downward so that the limiting block 47 is inserted into the second limiting groove 452 to limit the moving plate 45. At this time, the second spring 431 is in a compressed state.

[0046] Next, the fixing ring 22 is attached to the bottom of the mounting bracket 1, and the insertion rod 31 is inserted into the slot 32. The first inclined surface 3341 and the second inclined surface 321 cooperate to push the insertion block 334 into the movable cavity 332. At the same time, the first spring 337 is compressed. After the locking groove 335 and the insertion block 334 are aligned, the first spring 337 returns to its original position and pushes the insertion block 334 into the locking groove 335 to limit its movement.

[0047] Next, pull the limiting ring 462 upward, the second spring 431 resets and pushes the moving block 43 to reset, and at the same time the moving plate 45 drives the first limiting groove 451 to move below the limiting block 47, and at the same time the receiving block 44 moves below the annular ring 41 and fits and supports it. Then the limiting ring 462 moves downward, and the limiting block 47 is inserted into the first limiting groove 451 to limit the moving plate 45.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A needle felt filter bag for chemical dust removal, characterized by: include: The mounting bracket (1) has a ventilation hole (11) on its top wall, and multiple support frames (12) are erected and fixed around the ventilation hole (11) on the bottom wall of the mounting bracket (1). Filter bag assembly (2), which has: The filter bag body (21) and the fixing ring (22) fixed around the outer side of the top of the filter bag body (21) are fitted on the outside of the multiple support frames (12), and the fixing ring (22) and the mounting bracket (1) are detachably connected by a fixing mechanism (3). The fixing mechanism (3) has the following features: Multiple insert rods (31) are arranged around the outside of the vent (11) and fixed to the bottom wall of the mounting bracket (1). Multiple slots (32) for accommodating the insert rods (31) are provided on the top wall of the fixing ring (22). A locking component (33) for locking the insert rods (31) is provided on the outer wall of the fixing ring (22) corresponding to the slots (32).

2. A needle felt filter bag for chemical dust removal according to claim 1, characterized in that: The locking assembly (33) includes: A fixed cylinder (331) is fixed to the outer wall of the fixed ring (22). The fixed cylinder (331) has a movable cavity (332) that communicates with the slot (32). A locking rod (333) is slidably connected in the movable cavity (332). A plug (334) is fixed to the end of the locking rod (333) facing the slot (32). A locking groove (335) is opened on the side wall of the plug (31) corresponding to the movable cavity (332). A limiting ring (336) is also fixedly connected to the outer wall of the locking rod (333) and slidably connected to the inside of the movable cavity (332). A first spring (337) is sleeved on the outer side of the locking rod (333) on the side away from the insert block (334).

3. A needle felt filter bag for chemical dust removal according to claim 2, characterized in that: The insert (334) has a first inclined surface (3341) on the top side wall facing the insert rod (31), and the bottom end of the insert rod (31) has a second inclined surface (321) that fits into the first inclined surface (3341).

4. The needle felt filter bag for chemical dust removal according to claim 1, characterized in that: It also includes a fastening mechanism (4) for limiting the position of the filter bag assembly (2) after assembly, the fastening mechanism (4) having: An annular ring (41) is fixedly installed on the outer peripheral wall of the top of the fixed ring (22). Multiple moving grooves (42) are opened around the mounting support (1) outside the vent (11). A guide rod (421) is fixedly connected in each moving groove (42). A moving block (43) is sleeved on the guide rod (421) and slidably connected to the moving groove (42). A second spring (431) is sleeved on the outside of the guide rod (421) on the side of the moving block (43) away from the vent (11). A receiving block (44) is fixedly attached to the bottom wall of the movable block (43). One end of the receiving block (44) extends toward the filter bag assembly (2) and abuts against the bottom of the annular ring (41).

5. A needle felt filter bag for chemical dust removal according to claim 4, characterized in that: Each of the movable blocks (43) has a movable plate (45) fixedly attached to its top end, and one end of the movable plate (45) extends toward the vent (11). A first limiting groove (451) is provided on the top wall of the movable plate (45). The top wall of the mounting bracket (1) is provided with a plurality of sliding holes (46) surrounding the vent hole (11). A sliding rod (461) is slidably connected in the sliding hole (46). A limiting ring (462) is fixedly connected to the top of the plurality of sliding rods (461). The limiting ring (462) is located above the plurality of moving plates (45), and a limiting block (47) is fixedly connected to its bottom wall corresponding to the first limiting groove (451).

6. A needle felt filter bag for use in chemical dust removal according to claim 5, characterized in that: A second limiting groove (452) is also provided on the movable plate (45) on the side of the first limiting groove (451) near the vent (11). When the second limiting groove (452) and the limiting block (47) are inserted and engaged, the receiving block (44) moves away from the annular ring (41).

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