Modularized efficient bag-type dust collector

Abstract

The invention discloses a modularized efficient bag-type dust collector, and relates to the technical field of bag-type dust collectors. The device comprises a box body, a replacement cavity is formed in the lower portion of the left side of the box body, a partition plate is arranged in the box body, a pulse dust removal system is arranged above the partition plate, a plurality of frame installation openings are formed in the partition plate, and filter bag frames are installed at the bottoms of the frame installation openings; a conveying assembly is arranged in the box body, and a plurality of cloth bag modules are mounted on the conveying assembly. By adopting the modular design of the same row of cloth bags, the separation of the same row of cloth bags and the filter bag frame can be completed at one time, the separated cloth bags are folded at the lower part, and the cloth bags are overturned and conveyed to the position of the replacement cavity in cooperation with the arrangement of the conveying assembly and the replacement cavity, and the openings of the cloth bags face downwards, so that the cloth bags can be directly detached and replaced from the lower part; no hoisting and auxiliary equipment is needed, the cloth bag can be quickly disassembled and assembled from the lower portion, and the disassembling and assembling efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of baghouse dust collector technology, and specifically to a modular high-efficiency baghouse dust collector. Background Technology

[0002] Baghouse dust collectors, as a highly efficient and mature industrial flue gas purification device, are widely used in heavy industries such as power, steel, cement, chemical, and metallurgy. They are core equipment for controlling industrial dust emissions and meeting environmental protection standards. Their working principle involves using filter bags made of fiber filter material to filter dust-laden gas, causing dust to be captured on the surface of the filter bags, while the purified gas is discharged through the gaps between the filter bag fibers.

[0003] The current procedure for replacing the filter bags in large baghouse dust collectors is as follows: (1) First, use a crane to open the top cover of the dust collector. The operator needs to climb up the ladder to the stable tube sheet beam and fasten the safety belt. Use special pliers to remove the fixing clamps, pressure plates or spring rings on the top of the bag cage. Lift the bag cage vertically and steadily with both hands, avoiding scratching the tube sheet holes. If it gets stuck, gently shake it with a rubber mallet. Rough handling is strictly prohibited. Stack the removed old bags neatly.

[0004] (2) Remove the old filter bag from the perforated plate. The entire process should be done gently to minimize dust emissions. Immediately pack the old filter bag into a sealed ton bag.

[0005] (3) In a clean area, remove each new filter bag one by one, and do not drag them on the ground. Install the final protective sleeve of the filter bag, which can be removed before installation. Hoist the new filter bag to the top of the bag filter, fully pinch the elastic expansion ring at the opening of the new filter bag, and align it with the tube sheet hole. Use both hands to guide the filter bag, allowing it to pass through the tube sheet hole naturally, vertically, and without twisting. After the expansion ring has completely passed through, release it to allow it to open naturally. Press the expansion ring evenly around its perimeter with your hands to ensure that it is completely in contact with the circumference of the tube sheet hole. It is best to hear a "click" sound or feel a uniform elasticity. "Install one, check one, seal one."

[0006] (4) The bag cage is hoisted back to the top of the bag filter. Carefully place the bottom of the bag cage into the filter bag opening. Use a special guide sleeve or have someone below assist you to ensure that the bag cage is always centered on the filter bag. Slowly and straighten the bag cage into the filter bag until its top protective cap contacts the tube sheet. Install and tighten the fixing device on the top of the bag cage.

[0007] The existing methods all require workers to climb high and hoist the equipment for replacement, which is difficult, inefficient, and dangerous. The dust generated during replacement is also easily blown up, resulting in a lot of dust at the replacement site, requiring long-term cleaning afterward, and having a significant impact on the health of the workers.

[0008] Chinese Patent (Publication No.: CN115501700B) discloses a bag replacement device for a baghouse dust collector, including a support frame and a lifting frame. The support frame includes a crossbeam with support legs at both ends. The lifting frame slides vertically with the crossbeam. A first cylinder connects the crossbeam and the lifting frame. A lifting rod is provided on one side of the lifting frame. The lifting rod includes a sleeve rod connected to the lifting frame. A support head is provided at the lower end of the sleeve rod, and the support head cooperates with a bag cage for fixing the filter bag. The support head at the lower end of the lifting rod can automatically fix the filter bag to the bag cage. Under the action of the lifting frame, the filter bag and bag cage can be pulled out and put back into the dust collector. The filter bag is replaced directly on the lifting rod. After replacing the filter bag, the device puts the bag cage and filter bag back into the dust collector. The operator only needs to perform the replacement of the old and new filter bags, reducing manual operation and improving efficiency, making it more convenient and faster to use.

[0009] The aforementioned application discloses an external device, which, if used in conjunction with a large bag filter, is already large in height and volume, making it difficult to fix and install. Furthermore, it requires workers to climb to a height for hoisting during use, making it unsuitable for large bag filters. Summary of the Invention

[0010] The purpose of this invention is to provide a modular, high-efficiency bag filter to solve the above problems.

[0011] To achieve the above objectives, the present invention specifically adopts the following technical solution: A modular high-efficiency bag filter includes a housing, a replacement chamber located on the lower left side of the housing, a sealed door located at the bottom of the replacement chamber, an air inlet pipe located on the left side of the replacement chamber, an exhaust pipe located at the top of the housing, a partition located inside the housing, a pulse dust removal system located above the partition, and several frame mounting openings located inside the partition, with filter bag frames mounted at the bottom of the frame mounting openings. The box is equipped with a conveying assembly, which is fitted with several bag modules. Each bag module contains several bags. The bag modules can automatically fold the bags to detach them from the filter bag frame or unfold them to fit onto the filter bag frame.

[0012] Furthermore, the bag module includes an upper plate and a lower plate. The lower plate is mounted on the conveying assembly. An elastic spiral outer strip is provided between the upper plate and the lower plate. The upper plate has several bag mounting holes inside. The bag is installed in the bag mounting holes and is located in the middle of the elastic spiral outer strip. The upper plate can be close to the lower plate.

[0013] Furthermore, the conveying assembly includes two sets of drive rollers, one set located in the housing and the other set located in the replacement chamber. A drive belt is connected between the two sets of drive rollers. It also includes two sets of inner guide rails fixedly installed on the front and rear inner walls of the housing. Friction guide blocks are provided at both ends of the lower plate. The friction guide blocks are inserted into the inner guide rail and the friction force between them and the inner wall of the box is greater than the elastic force of the outer elastic spiral strip. The upper plate is connected to the drive belt through two transmission steel wire ropes. Several baffles are provided above the inner guide rail. The baffles are staggered with the filter bag frame.

[0014] Furthermore, the drive belt is a toothed transmission belt, and two sets are provided.

[0015] Furthermore, guide posts are installed at the four corners of the bottom of the upper plate, and guide holes are opened at the four corners of the lower plate. When the upper plate is fitted onto the filter bag frame, the guide posts just disengage from the guide holes.

[0016] Furthermore, the top of the guide hole is designed to expand outwards.

[0017] Furthermore, an adjusting shaft is rotatably mounted on the top of the lower plate, and adjusting threaded heads are provided at both ends of the adjusting shaft. An adjusting nut sleeve is eccentrically provided on the side of the friction guide block away from the housing. The adjusting nut sleeve is threadedly connected to the adjusting threaded head, and the transmission wire rope changes the transmission direction through the adjusting shaft.

[0018] Furthermore, a hexagonal drive is provided on the outer side of the adjustment shaft.

[0019] Furthermore, the bottom of the partition is provided with a plate groove, the upper plate can be inserted into the plate groove, both ends of the upper plate are provided with locking holes, and the inner wall of the plate groove is provided with locking blocks, which are driven by electromagnetic force.

[0020] Furthermore, a dust hopper is provided at the bottom of the box, and an industrial vacuum cleaner is connected to the outlet of the dust hopper.

[0021] The beneficial effects of this invention are as follows: 1. This invention adopts a modular design of the same row of cloth bags, which can separate the same row of cloth bags from the filter bag frame in one go. The separated cloth bags are folded at the bottom. With the help of the conveying component and the replacement chamber, the cloth bags are flipped and conveyed to the replacement chamber position with the opening of the cloth bags facing down. The cloth bags can be directly removed and replaced from the bottom without any hoisting or auxiliary equipment. The cloth bag disassembly and assembly can be completed quickly from the bottom, with high disassembly and assembly efficiency.

[0022] 2. This invention, through the setting of the conveying component, only requires one set of conveying drive to realize the folding and conveying of the cloth bag. The structure is simple and compact. At the same time, the conveying component makes the folded cloth bag pass through the dust hopper at the bottom of the box. When passing through the dust hopper, by repeatedly opening and closing the cloth bag, most of the dust and particles on the cloth bag are shaken off into the dust hopper. With the help of the vacuum cleaner connected to the dust hopper, the cloth bag can be replaced in a basically dust-free and efficient manner. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the box body of the present invention; Figure 4 This is a schematic diagram of the partition structure of the present invention; Figure 5 This is a schematic diagram of the bag module structure of the present invention.

[0024] Reference numerals: 1. Housing; 2. Replacement chamber; 201. Sealing door; 3. Air inlet pipe; 4. Partition plate; 401. Frame mounting port; 402. Plate groove; 403. Locking block; 5. Bag module; 501. Upper plate; 502. Lower plate; 503. Elastic spiral outer strip; 504. Bag; 505. Guide column; 506. Guide hole; 507. Adjusting shaft; 508. Adjusting threaded head; 509. Friction guide block; 510. Adjusting nut sleeve; 511. Hexagonal drive; 512. Transmission wire rope; 513. Locking hole; 6. Pulse dust removal system; 7. Exhaust pipe; 8. Inner guide rail; 9. Drive roller; 10. Drive belt; 11. Filter bag frame; 12. Baffle bar. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] Example 1, as Figures 1-5 As shown, a modular high-efficiency bag filter includes a housing 1, a replacement chamber 2 is provided on the lower left side of the housing 1, a sealing door 201 is provided at the bottom of the replacement chamber 2, an air inlet pipe 3 is provided on the left side of the replacement chamber 2, an exhaust pipe 7 is provided on the top of the housing 1, a partition 4 is provided inside the housing 1, a pulse dust removal system 6 is provided above the partition 4, and several frame mounting ports 401 are opened inside the partition 4, with filter bag frames 11 installed at the bottom of the frame mounting ports 401. The housing 1 is equipped with a conveying assembly, on which several bag modules 5 are installed. Each bag module 5 contains several bags 504. The bag module 5 can automatically fold the bags 504 away from the filter bag frame 11 or unfold them and attach them to the filter bag frame 11.

[0027] Preferably, a dust hopper is provided at the bottom of the housing 1, and an industrial vacuum cleaner is connected to the outlet of the dust hopper.

[0028] Replacement steps: Control the bag module 5 to peel the bag 504 in the same row from the filter bag frame 11. The peeled bag 504 is folded under the filter bag frame 11. Then, control the conveying component to rotate the bag module 5 from the upper surface to the lower surface, that is, the opening of the bag 504 faces downward. When the bag 504 is conveyed to the dust hopper position, the external industrial vacuum cleaner is started. The bag module 5 repeatedly opens and closes the bag 504, causing the folded bag 504 to shake in the dust hopper. Dust is collected and sucked out from the dust discharge port by an industrial vacuum cleaner. Dust and impurities inside and outside the filter bag 504 can be shaken off. After the dust on the filter bag 504 is cleaned, the conveying component transports the filter bag module 5 to the replacement chamber 2. Then, the sealing door 201 is opened, and the filter bag 504 can be directly disassembled from below. The filter bag 504 can be replaced with almost no dust. The conveying component transports the filter bag module 5 to the replacement chamber 2 in sequence, and replaces them one row at a time, achieving efficient replacement without the need for climbing or hoisting.

[0029] In embodiment two, based on the above embodiment, the bag module 5 includes an upper plate 501 and a lower plate 502. The lower plate 502 is mounted on the conveying assembly. An elastic spiral outer strip 503 is provided between the upper plate 501 and the lower plate 502. The upper plate 501 has several bag mounting holes inside. The bag 504 is installed in the bag mounting holes and is located in the middle of the elastic spiral outer strip 503. The upper plate 501 can be close to the lower plate 502.

[0030] Preferably, the conveying assembly includes two sets of drive rollers 9, one set located in the housing 1 and the other set located in the changing chamber 2. A drive belt 10 is connected between the two sets of drive rollers 9. It also includes two sets of inner guide rails 8 fixedly installed on the front and rear inner walls of the housing 1. Friction guide blocks 509 are provided at both ends of the lower plate 502. The friction guide blocks 509 are inserted into the inner guide rail 8, and the friction force between them and the inner wall of the box 1 is greater than the elastic force of the elastic spiral outer strip 503. The upper plate 501 is connected to the drive belt 10 through two transmission steel wire ropes 512. Several baffles 12 are provided above the inner guide rail 8. The baffles 12 are staggered with the filter bag frame 11.

[0031] Preferably, the drive belt 10 is a toothed transmission belt, and two sets are provided.

[0032] During disassembly, the motor drives the drive roller 9 to rotate, which in turn drives the drive belt 10 to rotate. Since the lower plate 502 does not move under the friction of the friction guide block 509, the drive belt 10 first drives the upper plate 501 to descend via the transmission steel wire rope 512. The upper plate 501 then drives the filter bag 504 to descend. The filter bag 504 folds between the upper plate 501 and the lower plate 502, and the elastic spiral outer strip 503 is compressed. When the upper plate 501 is separated from the filter bag frame 11, the elastic spiral outer strip 503 is completely compressed. Then, the drive belt 10 drives the upper plate 501 and the lower plate 502 to move simultaneously via the transmission steel wire rope 512. The lower plate 502 drives the friction guide block 509 to slide along the inner guide rail 8. When shaking off ash, control the drive roller 9 to reverse, drive the belt 10 to loosen the transmission steel wire rope 512, and under the action of the elastic spiral outer strip 503, the upper plate 501 extends into the ash hopper. Control the drive roller 9 to rotate forward, tighten the transmission steel wire rope 512 again, so that the cloth bag 504 can be repeatedly extended and folded to shake off ash. During replacement, the drive roller 9 is reversed, and the drive belt 10 loosens the transmission steel wire rope 512. Under the action of the elastic spiral outer strip 503, the remaining upper plates 501 extend into the ash hopper. The replaced upper plate 501 extends downward from the sealing door 201, eliminating the need for workers to climb to heights. The filter bag 504 and the upper plate 501 installation part can directly extend to the ground, making replacement convenient. The replaced filter bag 504 rotates upward under the action of the drive belt 10 and just rotates to the position of the stop bar 12. Therefore, when replacing it for the next time, the upper plate 501 at this position is restricted by the stop bar 12 and cannot rise, preventing the replaced upper plate 501 from getting stuck between the filter bag frames 11. Each time it is replaced, the replaced upper plate 501 will move to the corresponding stop bar 12 position until all are replaced. Then, the drive belt 10 is controlled to drive all filter bag modules 5 to move synchronously, so that the upper plate 501 is just misaligned with the stop bar 12. The upper plate 501 is located directly below the filter bag frame 11, making automatic replacement stable.

[0033] After the new filter bag 504 is fixedly installed on the upper plate 501, the transmission steel wire rope 512 is tightened, and the upper plate 501 enters the replacement chamber 2. Then, the upper plate 501 is brought to the bottom of the filter bag frame 11 by the drive belt 10. After all the upper plates 501 have moved to the designated position, the transmission steel wire rope 512 is then loosened, and the elastic spiral outer strip 503 pushes the upper plate 501 to rise. The upper plate 501 drives the filter bag 504 to be fitted onto the filter bag frame 11, realizing automatic installation. The entire process only requires the worker to replace the clean filter bag 504 on the ground, which is efficient and safe.

[0034] The top plate 501 is made of high-strength, lightweight materials such as aluminum alloy, and has a hollow internal design to reduce its weight.

[0035] In the third embodiment, based on the above embodiment, the guide posts 505 are installed at the four corners of the bottom of the upper plate 501, and guide holes 506 are opened at the four corners of the lower plate 502. When the upper plate 501 is fitted onto the filter bag frame 11, the guide posts 505 just disengage from the guide holes 506.

[0036] Preferably, the top of the guide hole 506 is designed to expand outward.

[0037] When the guide post 505 is inserted into the guide hole 506, the upper plate 501 is still fitted onto the filter bag frame 11. As the guide post 505 continues to be inserted, the upper plate 501 moves away from the filter bag frame 11. This design can guide the upper plate 501, so that the upper plate 501 can be stably fitted onto the filter bag frame 11, improving the stability of disassembly and assembly.

[0038] Example 4, based on the above examples, further includes an adjusting shaft 507 rotatably mounted on the top of the lower plate 502, with adjusting threaded heads 508 at both ends of the adjusting shaft 507, and an adjusting nut sleeve 510 eccentrically mounted on the side of the friction guide block 509 away from the housing 1, the adjusting nut sleeve 510 being threadedly connected to the adjusting threaded head 508, and the transmission wire rope 512 changing its transmission direction through the adjusting shaft 507.

[0039] Preferably, a hexagonal drive 511 is provided on the outer side of the adjusting shaft 507.

[0040] A tension sensor is installed at the connection between the upper plate 501 and the transmission wire rope 512. The threshold of the tension sensor must be greater than the elastic force of the elastic spiral outer strip 503. The friction guide block 509 is similar to a brake block and is prone to wear over time. If the wear is severe, the drive belt 10 will move the lower plate 502 together when the cloth bag 504 is not fully folded. Therefore, by setting the tension sensor, the initial friction force is greater than the threshold. When the friction force decreases to the threshold, it is fed back to the external system. Then, during the replacement, the adjusting shaft 507 is rotated by a wrench. The adjusting shaft 507 applies pressure to the friction guide block 509 against the inner wall of the housing 1 through the adjusting thread head 508 and the adjusting nut sleeve 510. The friction force is increased by increasing the pressure, so that the equipment can operate normally and the service life of the equipment can be improved. A wear-resistant coating is sprayed at the contact position between the housing 1 and the friction guide block 509 to improve the service life of the housing 1.

[0041] Example 5, based on the above examples, further includes a plate groove 402 at the bottom of the partition 4, into which the upper plate 501 can be inserted. Both ends of the upper plate 501 are provided with locking holes 513. The inner wall of the plate groove 402 is provided with a locking block 403, which is driven by electromagnetic force.

[0042] The electromagnetic drive uses a common electromagnet spring structure. During disassembly, the electromagnet is energized, the locking block 403 moves away from the locking hole 513, and the upper plate 501 can disengage from the plate groove 402. During installation, the electromagnet is energized first, causing the locking block 403 to retract. Then, the partition 4 is inserted into the plate groove 402 under the action of the elastic spiral outer strip 503. After that, the electromagnet is de-energized, and the locking block 403 is inserted into the locking hole 513. This ensures that the upper plate 501 is stably fixed below the partition 4 during use. During subsequent pulse dust removal, the filter bag 504 will not be displaced and will not affect the pulse dust removal process.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular high-efficiency bag filter, comprising a housing (1), characterized in that, A replacement chamber (2) is provided on the lower left side of the box (1). A sealing door (201) is provided at the bottom of the replacement chamber (2). An air inlet pipe (3) is provided on the left side of the replacement chamber (2). An exhaust pipe (7) is provided on the top of the box (1). A partition (4) is provided inside the box (1). A pulse dust removal system (6) is provided above the partition (4). Several frame mounting ports (401) are opened inside the partition (4). A filter bag frame (11) is installed at the bottom of the frame mounting port (401). The box (1) is equipped with a conveying assembly, and a number of bag modules (5) are installed on the conveying assembly. Each bag module (5) is equipped with a number of bags (504). The bag module (5) can automatically fold the bags (504) away from the filter bag frame (11) or unfold them and attach them to the filter bag frame (11).

2. The modular high-efficiency bag filter according to claim 1, characterized in that, The bag module (5) includes an upper plate (501) and a lower plate (502). The lower plate (502) is mounted on the conveying assembly. An elastic spiral outer strip (503) is provided between the upper plate (501) and the lower plate (502). The upper plate (501) has several bag mounting holes inside. The bag (504) is installed in the bag mounting holes and is located in the middle of the elastic spiral outer strip (503). The upper plate (501) can be close to the lower plate (502).

3. A modular high-efficiency bag filter according to claim 2, characterized in that, The conveying assembly includes two sets of drive rollers (9), one set located in the housing (1) and the other set located in the replacement chamber (2). A drive belt (10) is connected between the two sets of drive rollers (9). It also includes two sets of inner guide rails (8) fixedly installed on the front and rear inner walls of the housing (1). Friction guide blocks (509) are provided at both ends of the lower plate (502). The friction guide blocks (509) are inserted into the inner guide rail (8) and the friction force with the inner wall of the box (1) is greater than the elastic force of the elastic spiral outer strip (503). The upper plate (501) is connected to the drive belt (10) through two transmission steel wire ropes (512). Several baffles (12) are provided above the inner guide rail (8). The baffles (12) are staggered with the filter bag frame (11).

4. A modular high-efficiency bag filter according to claim 3, characterized in that, The drive belt (10) is a toothed transmission belt, and two sets are provided.

5. A modular high-efficiency bag filter according to claim 4, characterized in that, Guide posts (505) are installed at the four corners of the bottom of the upper plate (501), and guide holes (506) are opened at the four corners of the lower plate (502). When the upper plate (501) is fitted onto the filter bag frame (11), the guide posts (505) just disengage from the guide holes (506).

6. A modular high-efficiency bag filter according to claim 5, characterized in that, The top of the guide hole (506) is designed to expand outward.

7. A modular high-efficiency bag filter according to claim 5, characterized in that, An adjusting shaft (507) is rotatably mounted on the top of the lower plate (502). Both ends of the adjusting shaft (507) are provided with adjusting thread heads (508). An adjusting nut sleeve (510) is eccentrically provided on the side of the friction guide block (509) away from the housing (1). The adjusting nut sleeve (510) is threadedly connected to the adjusting thread head (508). The transmission wire rope (512) changes the transmission direction through the adjusting shaft (507).

8. A modular high-efficiency bag filter according to claim 7, characterized in that, A hexagonal drive (511) is provided on the outer side of the adjusting shaft (507).

9. A modular high-efficiency bag filter according to any one of claims 2-8, characterized in that, The bottom of the partition (4) is provided with a plate groove (402), and the upper plate (501) can be inserted into the plate groove (402). Both ends of the upper plate (501) are provided with card holes (513). The inner wall of the plate groove (402) is provided with a card block (403), which is driven by electromagnetic force.

10. A modular high-efficiency bag filter according to claim 9, characterized in that, The bottom of the box (1) is provided with a dust hopper, and the outlet of the dust hopper is connected to an industrial vacuum cleaner.

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