A calcium carbide furnace flue gas dust removal device

Abstract

The application belongs to the technical field of dust removal, and specifically discloses a calcium carbide furnace flue gas dust removal device, which comprises two supporting frames, two bag-type dust removal units and a plurality of desulfurization units, three groups of ash hoppers are communicated and installed at the lower part of the interiors of the two bag-type dust removal units, the two bag-type dust removal units are respectively installed in the interiors of the two supporting frames, connecting pipes are equidistantly installed at the upper part of the interiors of the two bag-type dust removal units along the horizontal direction, a dust guide pipe is jointly communicated and installed at the end of the connecting pipes away from the bag-type dust removal units, an ash inlet pipe is communicated and installed at one end of the dust guide pipe, and a lifting mechanism driven by a motor is additionally arranged on the basis of a pulse spraying system. The bag is synchronously lifted by the winding roller, the pull rope and the connecting column to form a pair of bags, so that the bags are extruded with each other and are in contact with the arc-shaped scrapers and the elastic rollers on the two sides of the bags in the lifting process, and scraping and vibration are generated.

Description

A dust removal device for calcium carbide furnace flue gas Technical Field

[0001] This invention belongs to the field of dust removal technology, and specifically discloses a dust removal device for calcium carbide furnace flue gas. Background Technology

[0002] Calcium carbide (calcium carbide) is an important basic chemical raw material, and its production mainly adopts the electric arc furnace smelting method. Inside the calcium carbide furnace, coke and lime react at high temperatures to produce calcium carbide. This smelting process generates large amounts of high-temperature, high-concentration, and complex-composition flue gas and dust. This dust mainly consists of lime powder, coke powder, and reaction intermediates, and is characterized by fine particle size, strong adhesion, and potential corrosiveness, posing a severe challenge to subsequent dust removal processes.

[0003] Baghouse dust collectors, with their high efficiency and stable filtration performance, have become the mainstream equipment for end-of-pipe treatment of calcium carbide furnace flue gas. Their core working principle is to allow dust-laden gas to pass through fiber bags, where dust is trapped on the outer surface of the bags, forming a "dust cake," and the purified gas is then discharged. To maintain long-term stable operation of the system, the dust accumulated on the bags must be removed periodically, a process known as "dust cleaning." Currently, the industry widely adopts pulse-jet cleaning technology, which works by instantaneously releasing compressed air to create a reverse airflow, causing the bags to contract and vibrate violently, thereby removing the attached dust.

[0004] However, with increasingly stringent environmental standards and the trend towards larger and more integrated equipment, the use of extra-long filter bags (typically exceeding 6 meters in length, and even reaching over 8 meters) has become the mainstream design solution to increase the filtration area of ​​a single unit and reduce its footprint. While this design offers space advantages, it also exposes the inherent limitations of existing pulse jet cleaning technology. Specifically, the pulse airflow energy exhibits significant attenuation and uneven distribution within the long filter bag. After compressed air is ejected from the nozzle on the blowpipe, its dynamic pressure and velocity rapidly decrease from top to bottom along the length of the filter bag. When the filter bag is too long, the airflow pressure and velocity reaching the bottom of the bag are severely insufficient, failing to generate adequate cleaning force. This results in dust in the lower area of ​​the filter bag (especially at and below the connection with the tube sheet) being difficult to remove effectively. This area is precisely where the dust concentration is highest and the dust adheres most tightly.

[0005] Therefore, the present invention proposes a dust removal device for calcium carbide furnace flue gas to solve the above-mentioned defects. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the background art, and to propose a dust removal device for calcium carbide furnace flue gas, comprising two support frames, two bag filter units, and several desulfurization units. Three sets of ash hoppers are connected and installed below the interior of each of the two bag filter units. The two bag filter units are respectively installed inside the two support frames. Connecting pipes are installed at equal distances along the horizontal direction above the interior of the two bag filter units. The ends of the multiple connecting pipes furthest from the bag filter units are connected to an ash inlet pipe. One end of the ash inlet pipe is connected to an ash feed pipe. The two bag filters... The dust removal unit and several desulfurization units are connected by a U-shaped ash pipe. An exhaust pipe is installed at one end of the U-shaped ash pipe, and an exhaust fan is installed at the other end of the exhaust pipe. An electric shut-off gate valve is installed inside the U-shaped ash pipe near the desulfurization unit to realize the opening and closing of gas entering the exhaust pipe and the flow rate regulation. A square box is fixedly installed in the middle and near the top of the two bag dust removal units. Sealing plates are fixedly installed on both sides of the bag dust removal unit near the square box. Several bag adsorption mechanisms are installed at equal intervals along the horizontal direction inside the two sealing plates.

[0007] In the above technical solution, further, several of the bag adsorption mechanisms include a card seat fixedly embedded inside the sealing plate, the card seat is provided with a bag, and the bag is fixed to the inner wall of the card seat by symmetrically installed clamping members.

[0008] In the above technical solution, the clamping component further includes a clamping shell fixedly installed on the inner wall of the clamping seat, and a pressure block is slidably clamped inside the clamping shell. The bottom of the pressure block abuts against the annular folded edge formed by the reverse sleeve of the upper port of the cloth bag.

[0009] In the above technical solution, a U-shaped top frame is further provided at the bottom of the sealing plate and near both sides of the cloth bag. The inner wall of the U-shaped top frame is provided with a frame at equal intervals along the vertical direction. The upper and lower sides of the outer wall of the frame are fixedly installed with positive arc plates. The outer wall of the positive arc plates is symmetrically installed with side arc plates. A storage frame is installed through the frame. The storage frame is provided with an elastic contact element.

[0010] In the above technical solution, the elastic contact element further includes a vibrating plate disposed inside the storage frame. Elastic columns are symmetrically installed on one side of the bottom of the vibrating plate. An L-shaped seat is installed on the bottom of the two elastic columns. One side of the L-shaped seat is fixedly installed on the bottom of the frame. Springs are fitted on the outside of the two elastic columns. Several connecting rods are fixedly installed on the outer surface of the vibrating plate away from the elastic columns. A double-headed roller is fixedly installed at one end of each of the several connecting rods.

[0011] In the above technical solution, further, two vertically symmetrical cloth bags inside the two sealing plates are each fixedly fitted with retaining rings. The two retaining rings are connected by a common connecting column. A sleeve is fixedly fitted in the middle of the connecting column. A load-bearing rod is fixedly installed on the upper part of the sleeve. A lifting ring is fixedly installed on the upper end of the load-bearing rod. A pull rope is wrapped around the lifting ring. A rotating rod is rotatably installed inside the square box. A winding roller is fixedly fitted on the outside of the rotating rod and between the two sets of vertically symmetrical cloth bags. The end of the pull rope away from the lifting ring is wrapped around the outside of the winding roller. A motor is fixedly installed on the outside of one end of the square box. The output end of the motor is fixedly connected to one end of the rotating rod. A sealed bearing cylinder is embedded inside the square box near the outside of the pull rope.

[0012] In the above technical solution, a pulse air blowing device is fixedly installed on one side of the outer wall of the bag filter unit. Two guide pipes are installed inside the pulse air blowing device. The two guide pipes correspond to the positions of the filter bags on the sealing plate. Pulse nozzles are installed inside the lower part of the guide pipes and at the positions corresponding to the positions of each filter bag.

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

[0014] This invention combines pulse jet cleaning with linked lifting cleaning to form an innovative combined cleaning method. Through motor control, each long filter bag is simultaneously lifted upwards while being impacted by the reverse pulse airflow. During the lifting process, the bags are forced to squeeze and rub against each other, and the outer surface of the bags contacts and scrapes and vibrates against the arc-shaped guide plates and elastic roller array on both sides. This method greatly enhances the peeling force on the entire length of the filter bag (especially the middle and lower areas that are difficult to effectively cover with traditional pulse airflow), breaking through the technical bottleneck of energy attenuation in single cleaning methods. This achieves deep and uniform removal of highly adhesive calcium carbide dust, significantly improving overall cleaning efficiency and reliability.

[0015] This invention, through its specially designed bag-type adsorption mechanism, not only improves the dust removal effect but also helps ensure the long-term stable operation of the dust collection device and the lifespan of its core components. The design of the elastic contact parts combines rigidity and cushioning in the scraping action, reducing rigid damage to the bag fibers. The lifting mechanism, composed of a rotating rod and a pull rope, ensures more balanced force and movement on the bag, avoiding localized stress concentration. Deep and thorough dust removal effectively prevents dust accumulation on the underside of the bag, maintaining good air permeability and thus reducing system operating resistance and fan power consumption. Simultaneously, it also reduces the continuous load and fatigue on the bag. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a schematic diagram of the external appearance of the bag filter unit of the present invention;

[0018] Figure 3 is a schematic diagram of the internal connection structure of the double bag dust removal unit of the present invention;

[0019] Figure 4 is a schematic diagram of the connection structure between the cloth bag, the retaining ring, and the connecting post of the present invention;

[0020] Figure 5 is a schematic diagram of the connection structure between the card holder, the cloth bag, and the clamping component of the present invention.

[0021] Figure 6 is a schematic diagram of the inner part of the square box of the present invention;

[0022] Figure 7 is a schematic diagram of the connection structure between the positive arc plate and the side arc plate of the present invention and the U-shaped top frame;

[0023] Figure 8 is a schematic diagram of the connection structure of the positive arc plate and the side arc plate of the present invention installed on the frame;

[0024] Figure 9 is a schematic diagram of the connection structure between the housing, the vibrating plate, and the L-shaped seat of the present invention.

[0025] Figure 10 is an enlarged structural diagram of point A in Figure 4 of the present invention.

[0026] In the diagram: 1. Support frame; 2. Baghouse dust collector unit; 3. Ash hopper; 4. U-shaped ash pipe; 5. Desulfurization unit; 6. Ash inlet pipe; 7. Ash feed pipe; 8. Exhaust pipe; 9. Exhaust fan; 10. Pulse air blowing device; 11. Motor; 12. Connecting pipe; 13. Square box; 14. Sealing plate; 15. Pulse nozzle; 16. Guide pipe; 17. Load-bearing rod; 18. U-shaped top frame; 19. Clamping ring; 20. 21. Cloth bag; 22. Drawstring; 23. Card holder; 24. Card case; 25. Pressure block; 26. Sealed bearing cylinder; 27. Take-up roller; 28. Positive arc plate; 29. ​​Side arc plate; 30. Storage frame; 31. Vibrating plate; 32. Frame; 33. Connecting rod; 34. Double-headed roller; 35. Elastic column; 36. Spring; 37. L-shaped seat; 38. Sleeve; 39. Connecting column; 40. Lifting ring; 41. Rotating rod. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0029] As shown in Figures 1-10, a dust removal device for calcium carbide furnace flue gas includes two support frames 1, two bag filter units 2, and several desulfurization units 5. Three sets of ash hoppers 3 are installed below and connected to the interior of each of the two bag filter units 2. The two bag filter units 2 are respectively installed inside the two support frames 1. Connecting pipes 12 are installed at equal horizontal intervals above the interior of the two bag filter units 2. The ends of the multiple connecting pipes 12 furthest from the bag filter units 2 are connected to an ash inlet pipe 6. One end of the ash inlet pipe 6 is connected to an ash feed pipe 7. The two bag filter units 2 are connected to several... The desulfurization units 5 are connected by a U-shaped ash pipe 4. An exhaust pipe 8 is installed at one end of the U-shaped ash pipe 4. An exhaust fan 9 is installed at one end of the exhaust pipe 8. An electric shut-off gate valve is installed inside the U-shaped ash pipe 4 and near the end of the desulfurization unit 5 to realize the opening and closing of gas entering the exhaust pipe 8 and the flow rate regulation. A square box 13 is fixedly installed in the middle and near the top of the two bag dust collection units 2. Sealing plates 14 are fixedly installed on both sides of the bag dust collection units 2 and near the square box 13. Several bag adsorption mechanisms are installed at equal distances along the horizontal direction inside the two sealing plates 14.

[0030] In this embodiment, two baghouse dust collection units 2 are arranged side by side and are securely installed inside two support frames 1, forming parallel dust collection channels, which improves the system's processing capacity. Each baghouse dust collection unit 2 has three sets of dust hoppers 3 connected to its bottom for collecting the removed dust.

[0031] In the flue gas flow process, the high-temperature, dust-laden flue gas generated by the calcium carbide furnace is first introduced into two separate baghouse dust collection units 2 for dust collection. The purified gas is collected from the top of each dust collection unit. The purified flue gas is then transported through a shared U-shaped ash pipe 4 to several desulfurization units 5 on one side for desulfurization treatment. The lower end of the U-shaped ash pipe 4 is connected to an exhaust pipe 8, and the entire system's flow is powered by an induced draft fan 9. The U-shaped ash pipe 4 is equipped with a shut-off gate valve to control the airflow path during commissioning, maintenance, or air volume adjustment.

[0032] Two sealing plates 14 divide the internal space of the bag filter unit 2 into a clean air chamber in the middle and dust-laden air chambers on both sides. Several bag adsorption mechanisms are installed at equal intervals along the horizontal direction on the sealing plates 14. The flue gas must pass through the filter bags 20 to enter the clean air chamber, thereby achieving gas-solid separation.

[0033] Ash hopper 3 uses an electric ash discharge valve to discharge ash.

[0034] In summary, the flue gas undergoes dry dust removal before desulfurization to ensure that most particulate matter has been removed from the gas entering desulfurization unit 5, protecting the desulfurization catalyst or slurry system and ensuring the stability and efficiency of the entire process.

[0035] Several bag adsorption mechanisms include a card holder 22 fixedly embedded inside the sealing plate 14, a bag 20 is provided inside the card holder 22, and the bag 20 is fixed to the inner wall of the card holder 22 by symmetrically installed clamping members.

[0036] In this embodiment, during installation, the opening of the cloth bag 20 is folded outward to form a reverse folded surface, covering the upper surface of the card holder 22. Subsequently, the pressure block 24 is pushed in along the card housing 23, so that its bottom tightly abuts against the reverse folded surface of the cloth bag 20. Through the two sets of symmetrically arranged clamping members, the cloth bag 20 can be firmly and sealed to the sealing plate 14, and the installation and replacement operations are simple.

[0037] The clamping component includes a retainer 23 fixedly installed on the inner wall of the retainer 22. A pressure block 24 is slidably fitted inside the retainer 23. The bottom of the pressure block 24 abuts against the annular folded edge formed by the reverse sleeve of the upper port of the cloth bag 20.

[0038] It should be noted that the upper opening of the cloth bag 20 undergoes special treatment, typically using a thickened, wear-resistant cartilage material, and is pre-heat-set into a structure with a specific outward folded edge. During installation, this thickened folded edge is slipped over the end of the card holder 22, so that it flatly covers the annular end face of the card holder 22. This structure can also be mechanically tightened using bolts, thereby ensuring that the cloth bag 20 will not fall off during daily use.

[0039] A U-shaped top frame 18 is provided at the bottom of the sealing plate 14 and on both sides near the bag 20. A frame 31 is provided at equal intervals along the vertical direction on the inner wall of the U-shaped top frame 18. A positive arc plate 27 is fixedly installed on the upper and lower sides of the outer wall of the frame 31. A side arc plate 28 is symmetrically installed on the outer wall of the positive arc plate 27. A storage frame 29 is installed through the frame 31. An elastic contact element is provided inside the storage frame 29. The elastic contact element includes a vibrating plate 30 installed inside the storage frame 29. An elastic column 34 is symmetrically installed on one side of the bottom of the vibrating plate 30. An L-shaped seat 36 is installed at the bottom of the two elastic columns 34. One side of the L-shaped seat 36 is fixedly installed at the bottom of the frame 31. A spring 35 is fitted on the outside of the two elastic columns 34. Several connecting rods 32 are fixedly installed on the outer surface of the vibrating plate 30 away from the elastic column 34. A double-headed roller 33 is fixedly installed at one end of each of the several connecting rods 32.

[0040] In this embodiment, when the bag 20 is pulled laterally or vibrates, its side will slide into contact with the positive arc plate 27 and the side arc plate 28, initially scraping away surface dust. As the bag 20 moves further, it will compress the double-headed roller 33, and the pressure will be transmitted to the vibrating plate 30 and the spring 35 through the connecting rod 32. This process not only achieves rolling friction scraping through the rollers, reducing fabric wear, but also causes the vibrating plate 30 to generate high-frequency micro-vibrations through the energy storage and release of the spring 35, which are transmitted to the surface of the bag 20 through the rollers, effectively loosening and peeling off the strongly adhesive dust layer.

[0041] Inside the two sealing plates 14, two vertically symmetrical cloth bags 20 are each fixedly fitted with retaining rings 19. The two retaining rings 19 are connected by a common connecting post 38. A housing 37 is fixedly fitted in the middle of the connecting post 38. A load-bearing rod 17 is fixedly installed on the top of the housing 37. A lifting ring 39 is fixedly installed on the upper end of the load-bearing rod 17. A pull rope 21 is wrapped around the lifting ring 39. A rotating rod 40 is rotatably installed inside the square box 13. A take-up roller 26 is fixedly fitted on the outside of the rotating rod 40 and between the two sets of vertically symmetrical cloth bags 20. The end of the pull rope 21 away from the lifting ring 39 is wrapped around the outside of the take-up roller 26. A motor 11 is fixedly installed on the outside of one end of the square box 13. The output end of the motor 11 is fixedly connected to one end of the rotating rod 40. A sealed bearing cylinder 25 is embedded inside the square box 13 and near the outside of the pull rope 21.

[0042] In this embodiment, when dust removal is required, the motor 11 starts, driving the rotating rod 40 and the winding roller 26 to rotate synchronously, winding up the pull rope 21. The pull rope 21 transmits the lifting force synchronously to the paired retaining rings 19 through the lifting ring 39, the load-bearing rod 17, the sleeve 37, and the connecting column 38, thereby pulling the upper half of the two vertically symmetrical cloth bags 20 upward. This lifting motion causes the cloth bags 20 to bend, come together and squeeze, triggering a scraping and vibration dust removal effect. Subsequently, the motor 11 reverses to release the pull rope 21, and the cloth bags 20 gradually fall back under the action of gravity. This mechanism achieves synchronous and balanced mechanical dust removal drive for multiple sets of cloth bags 20, with high efficiency and precise control.

[0043] It should be noted that the sealed bearing sleeve 25 ensures the airtightness of the moving part of the pull rope 21.

[0044] A pulse air blowing device 10 is fixedly installed on one side of the outer wall of the bag filter unit 2. Two guide pipes 16 are connected inside the pulse air blowing device 10. The two guide pipes 16 correspond to the positions of the filter bags 20 on the sealing plate 14. Pulse nozzles 15 are connected to the lower part of the guide pipes 16 and corresponding to the positions of each filter bag 20.

[0045] In this embodiment, pulse cleaning is initiated. When the pulse valve opens, compressed air is instantly injected at high speed from the pulse nozzle 15 into the bag 20, causing the bag 20 to expand rapidly and inducing the gas inside the bag to be ejected in the opposite direction, thereby shaking off some of the dust from the outer surface of the bag 20. In this invention, this pulse cleaning process can be performed simultaneously with the lifting operation of the bag 20. The combined effect of pneumatic shaking and mechanical lifting and scraping on the bag 20 is particularly beneficial for the lower part of the bag 20, where the pulse airflow may weaken. The mechanical action provides crucial supplementary cleaning force, ensuring thorough cleaning.

[0046] It should be noted that the pulse air blowing device 10 consists of components such as a pulse valve and an air tank.

[0047] Working Principle: The high-temperature, dust-laden flue gas generated during calcium carbide production is introduced into two parallel baghouse dust collection units 2. The flue gas is distributed within the unit, passing through numerous filter bags 20 mounted on a sealing plate 14. Dust is trapped and adsorbed onto the outer surface of the filter bags 20, while the purified gas permeates through the fibers of the filter bags 20 and enters the clean air chamber enclosed by the sealing plate 14, the square box 13, and the unit housing. When dust removal is required, the pulse air blowing device 10 is activated, releasing high-speed compressed air. The airflow is transported through two guide pipes 16 and injected into the interior of each filter bag 20 by pulse nozzles 15 above it. This downward reverse airflow causes the filter bags 20 to expand instantaneously and generate high-frequency vibrations, aiming to remove some of the dust from their surface. Simultaneously with the pulse blowing, the motor 11 starts, driving the rotating rod 40 and the winding roller 26 to rotate. The winding roller 26 winds up the pull rope 21, and through the transmission of the lifting ring 39, the load-bearing rod 17, the casing 37, and the connecting column 38, it synchronously lifts two rows of vertically symmetrical cloth bags 20 connected in pairs by the retaining ring 19. During the upward lifting of the cloth bags 20, adjacent cloth bags 20 squeeze and rub against each other due to the upward movement. It should be noted that when the cloth bags 20 rise to the top, the frequency of the pulse can be adjusted to a low frequency, so as not to affect the dust removal between them. At the same time, the outer surface of the cloth bags 20 will come into contact with the components pre-set on the U-shaped top frame 18 on both sides during the upward process. First, it will slide and scrape against the front arc plate 27 and the side arc plate 28; then, the cloth bags 20 will further squeeze the elastic contact members in the storage frame 29. Specifically, the cloth bags 20 contact and push the double-headed roller 33, and the pressure is transmitted to the vibrating plate 30 through the connecting rod 32, which in turn compresses the spring 35 and causes the elastic column 34 to undergo elastic deformation. This process not only generates direct rolling and scraping, but the energy storage and release of spring 35 also causes the vibrating plate 30 and double-headed roller 33 to reciprocate with micro-vibration, applying a vibration effect to the surface of the filter bag 20. The upward lifting process and the shaking effect of the pulse airflow work together to greatly enhance the physical peeling force on the adhesive dust in the lower part of the filter bag 20. After the dust removal is completed, motor 11 reverses to release the pull rope 21, and the filter bag 20 falls back to its natural vertical state under the action of gravity. The peeled dust sinks downward under the action of gravity and falls into the ash hopper 3 for temporary storage. The ash hopper 3 can discharge dust at regular intervals.

[0048] The flue gas, after being deeply purified by the bag filter unit 2, is collected and enters several desulfurization units 5 connected in series through the U-shaped ash pipe 4. In the desulfurization unit 5, acidic gases such as sulfides in the flue gas are removed. Finally, the completely purified clean gas, powered by the induced draft fan 9, is discharged into the atmosphere through the exhaust pipe 8 in compliance with standards. The gate valve installed inside the U-shaped ash pipe 4 can be used to regulate or cut off the internal airflow to adapt to different airflow patterns.

[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 principles of 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 claimed invention.

Claims

1. A dust removal device for calcium carbide furnace flue gas, comprising two support frames (1), two bag filter units (2), and several desulfurization units (5), characterized in that: Two baghouse dust collectors (2) are equipped with connecting pipes (12) at equal intervals along the horizontal direction above their interiors. Multiple connecting pipes (12) are connected to a common ash inlet pipe (6) at the ends furthest from the baghouse dust collectors (2). An ash inlet pipe (7) is connected to one end of the ash inlet pipe (6). The two baghouse dust collectors (2) are connected to several desulfurization units (5) via a common U-shaped ash pipe (4). An exhaust pipe (8) is connected to the lower end of one end of the U-shaped ash pipe (4). A square box (13) is fixedly installed in the middle and near the top of the two baghouse dust collectors (2). A sealing plate (14) is fixedly installed inside the unit (2) and on both sides near the square box (13); a U-shaped top frame (18) is provided at the bottom of the sealing plate (14) and on both sides near the cloth bag (20); a frame (31) is provided at equal intervals along the vertical direction on the inner wall of the U-shaped top frame (18); a positive arc plate (27) is fixedly installed on the upper and lower sides of the outer wall of the frame (31); a side arc plate (28) is symmetrically installed on the outer wall of the positive arc plate (27); a storage frame (29) is installed through the frame (31); an elastic contact element is provided inside the storage frame (29); the elastic contact element includes a vibrating plate (29) installed inside the storage frame (29). 30), elastic columns (34) are symmetrically installed on one side of the bottom of the vibrating plate (30), and an L-shaped seat (36) is installed on the bottom of the two elastic columns (34). One side of the L-shaped seat (36) is fixedly installed on the bottom of the frame (31). Springs (35) are fitted on the outside of the two elastic columns (34). Several connecting rods (32) are fixedly installed on the outer surface of the vibrating plate (30) away from the elastic columns (34). A double-headed roller (33) is fixedly installed at one end of each of the several connecting rods (32). Two cloth bags (20) in vertically symmetrical positions inside the two sealing plates (14) are fixedly fitted with retaining rings (19). The two retaining rings (19) are connected by a common connecting post (38). A sleeve (37) is fixedly sleeved in the middle of the connecting post (38). A load-bearing rod (17) is fixedly installed on the upper part of the sleeve (37). A lifting ring (39) is fixedly installed on the upper end of the load-bearing rod (17). A pull rope (21) is wrapped around the outside of the lifting ring (39). A rotating rod (40) is rotatably installed inside the square box (13). A winding roller (26) is fixedly sleeved on the outside of the rotating rod (40) and between the two sets of vertically symmetrical cloth bags (20). The end of the pull rope (21) away from the lifting ring (39) is wrapped around the outside of the winding roller (26) to pull the upper half of the two vertically symmetrical cloth bags (20) upward, so that the cloth bags (20) bend, squeeze together, and trigger scraping and vibration cleaning.A pulse air blowing device (10) is fixedly installed on one side of the outer wall of the bag filter unit (2). Two guide pipes (16) are connected inside the pulse air blowing device (10). The two guide pipes (16) correspond to the positions of the filter bags (20) on the sealing plate (14). Furthermore, pulse nozzles (15) are connected to the lower part of each guide pipe (16) at the position corresponding to each filter bag (20), thus realizing the linkage between pulse jet cleaning and lifting cleaning of the long filter bags.

2. The dust removal device for calcium carbide furnace flue gas according to claim 1, characterized in that: Several bag adsorption mechanisms are installed at equal intervals along the horizontal direction inside the two sealing plates (14). Each bag adsorption mechanism includes a card seat (22) fixedly embedded inside the sealing plate (14). A bag (20) is provided inside the card seat (22). The bag (20) is fixed to the inner wall of the card seat (22) by symmetrically installed clamping members.

3. The dust removal device for calcium carbide furnace flue gas according to claim 2, characterized in that: The clamping component includes a clamping shell (23) fixedly installed on the inner wall of the clamping seat (22), and a pressure block (24) is slidably clamped inside the clamping shell (23). The bottom of the pressure block (24) abuts against the annular folded edge formed by the reverse sleeve of the upper port of the cloth bag (20).

4. The dust removal device for calcium carbide furnace flue gas according to claim 1, characterized in that: A motor (11) is fixedly installed on the outer side of one end of the square box (13). The output end of the motor (11) is fixedly connected to one end of the rotating rod (40). A sealed bearing cylinder (25) is embedded inside the square box (13) and near the outside of the pull rope (21).

5. The dust removal device for calcium carbide furnace flue gas according to claim 1, characterized in that: Three sets of ash hoppers (3) are connected and installed inside the two bag filter dust removal units (2). The two bag filter dust removal units (2) are respectively installed inside the two support frames (1). An exhaust fan (9) is connected and installed at one end of the exhaust pipe (8). An electric shut-off valve is installed inside the U-shaped ash pipe (4) and at the end near the desulfurization unit (5) to realize the opening and closing of gas entering the exhaust pipe (8) and the flow rate regulation.

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