A flue gas dedusting device

Abstract

The present application belongs to the field of dust collector, and particularly relates to a flue gas dust removal equipment to solve the technical problem of low dust removal efficiency in the prior art, comprising a dust removal box, a lower air inlet pipe and a first end dust remover, wherein the top of the dust removal box is provided with a back flushing mechanism; the first end dust remover comprises a mounting seat, a dust removal bag assembly and a wind blocking mechanism, the wind blocking mechanism comprises a vertical plate, a vertical plate gear, a baffle and a gear driving assembly and a baffle driving assembly; the gear driving assembly comprises a mounting frame, the mounting frame comprises a fixing ring, a plurality of inner teeth are arranged on the inner side of the fixing ring, the inner teeth drive the vertical plate gear to reversely rotate, so that the inner cavity of the dust removal bag assembly is divided into a first chamber and a second chamber; the baffle driving assembly drives the baffle close to the lower air inlet pipe to rotate to an inclined state for shielding the first chamber, and drives the baffle away from the lower air inlet pipe to rotate to a vertical state. Dust is prevented from being re-adsorbed on the dust removal bag assembly, thereby improving the dust removal efficiency.

Description

Technical Field

[0001] This invention belongs to the field of dust collectors, specifically relating to a flue gas dust removal device. Background Technology

[0002] Combustion of coal briquettes produces industrial flue gas containing pollutants such as dust, which must be removed before being released into the atmosphere. Baghouse dust collectors are the most widely used flue gas dust removal equipment. When dust-laden flue gas flows through the filter bags of a baghouse dust collector, the dust is trapped. In existing technology, baghouse dust collectors typically use multiple filter bags to improve efficiency. However, in actual production, it has been found that because the inlet position is fixed, the bags closer to the inlet trap more dust and are prone to clogging, while the bags farther from the inlet are not fully utilized, reducing the overall efficiency of the baghouse dust collector.

[0003] To address this issue, Chinese patent application CN118512845A discloses a flat bag pulse dust collector, comprising a bottom support frame, a dust collection unit, a dust-laden gas conveying main pipe, and a purified air collection main pipe. The dust collection unit includes a main dust collection housing, flat bag dust collection components, and a pulse conveying mechanism. The flat bag dust collection components include a flat bag fixing plate and dust collection discs rotatably mounted in the main dust collection housing. The pulse conveying mechanism is used to spray air into each dust collection disc for backflushing. Multiple dust-laden gas conveying auxiliary pipes are connected to the main dust collection main pipe. In use, dust-laden gas enters the dust collection unit through the main and auxiliary pipes, is filtered by the dust collection discs, and then enters the purified air collection main pipe. The flat bag fixing plate drives the dust collection discs to rotate, allowing the dust-laden gas input through the auxiliary pipes to contact each dust collection disc evenly. After a period of filtration, the pulse conveying mechanism performs backflushing, blowing off solid particles from the outside of the dust collection discs.

[0004] The problem with the existing technology is that the dust collector filter bag near the side of the dust-laden gas conveying secondary pipe is subjected to a larger inlet air pressure. During backflushing, the inlet airflow can easily blow solid particles that have fallen from the dust collector filter bag towards the side of the dust-laden gas conveying secondary pipe back onto the dust collector filter bag. The solid particles re-adhere to the dust collector filter bag, reducing the dust removal efficiency. Moreover, the solid particles blown back onto the dust collector filter bag will increase the load on the dust collector filter bag and increase the frequency of backflushing. Summary of the Invention

[0005] This invention provides a flue gas dust removal device to solve the technical problem that solid particles falling from the dust collector bag towards the air inlet side during backflushing are easily blown back onto the dust collector bag by the air inlet airflow, resulting in low dust removal efficiency.

[0006] To solve the above problems, the present invention provides a flue gas dust removal device with the following technical solution: A flue gas dust removal device includes a dust collection box, a lower air inlet pipe disposed on the dust collection box, and a first-end dust removal device near the lower air inlet pipe. The first-end dust removal device includes a mounting base rotatably installed inside the dust collection box and multiple dust bag assemblies disposed on the mounting base. A back-blowing mechanism is provided on the top of the dust collection box. The first-end dust removal device also includes a wind baffle mechanism, which includes a vertical plate located inside the dust bag assemblies, a vertical plate gear fixed to the top of the vertical plate and rotatably installed on the mounting base around a vertical axis, a baffle rotatably installed on the top of the vertical plate around a horizontal axis, a gear drive assembly, and a baffle drive assembly.

[0007] The gear drive assembly includes a mounting bracket fixed to the dust collector box. The mounting bracket includes a fixing ring arranged coaxially with the mounting base. The inner side of the fixing ring is provided with multiple circumferentially spaced internal teeth. When the vertical plate gear revolves with the mounting base, the internal teeth mesh with the vertical plate gear to drive the vertical plate gear to rotate in the opposite direction. This causes the vertical plate to divide the inner cavity of the dust collector bag assembly into a first chamber that always faces the lower air inlet pipe and a second chamber that always faces away from the lower air inlet pipe. The baffle has a vertical state and an inclined state that blocks the first chamber when rotating relative to the vertical plate. The baffle drive assembly is used to drive the baffle close to the lower air inlet pipe to rotate to the inclined state and drive the baffle away from the lower air inlet pipe to rotate to the vertical state.

[0008] The rotation of the mounting base allows each dust bag assembly to revolve around the base, ensuring that each assembly is positioned to the side where the lower air inlet pipe is located. This allows the dust-laden gas to be evenly sprayed onto each assembly, preventing dust accumulation and clogging on those near the lower air inlet pipe. As the vertical plate inside each assembly revolves, a gear fixed to the top of the vertical plate meshes with the internal teeth of the fixing ring. This allows the internal teeth of the fixing ring to reverse the gear, dividing the interior of the dust bag assembly into a first chamber that always faces the lower air inlet pipe and a second chamber that always faces away from it. When the baffle approaches the lower air inlet pipe, the baffle drive assembly moves the baffle from a vertical position to an inclined position. At this time, when the back-blowing mechanism sprays air towards the dust collector bag assembly, the baffle blocks the first chamber, preventing dust from falling off as soon as the back-blowing mechanism sprays air into the first chamber. The air intake in the lower air inlet pipe then blows the dust towards the dust collector bag assembly, causing the dust to be re-adsorbed onto the dust collector bag assembly, thereby improving the dust removal efficiency. When the baffle moves away from the lower air inlet pipe, the baffle drive assembly moves the baffle from an inclined position to a vertical position, allowing the back-blowing mechanism to back-blow the first and second chambers, thereby blowing off the dust and preventing dust accumulation.

[0009] As a further improvement, the baffle drive assembly includes a telescopic member, a force-bearing member, and a compression spring located in the baffle facing the second chamber. One end of the telescopic member is hinged to the baffle, and the other end is connected to the force-bearing member. The compression spring is pressed between the force-bearing member and the vertical plate gear to apply an upward elastic force to the force-bearing member so that the baffle is kept in a vertical state. When the baffle is in a vertical state, the top surface of the force-bearing member is located above the top of the baffle.

[0010] The baffle drive assembly also includes a retaining ring on the mounting bracket. The bottom of the retaining ring near the lower air intake pipe has a protrusion, which is used to push the force-bearing component downward to place the baffle in an inclined state.

[0011] By utilizing the rotation of the baffle with the mounting base, and in conjunction with protrusions, telescopic components, force-bearing components, and springs, the baffle can be switched between vertical and tilted states without adding a power source or control device, thus saving costs.

[0012] As a further improvement, the baffle drive assembly also includes a sleeve fixed on the vertical plate gear and a vertical rod provided on the telescopic member. The vertical rod and the force-bearing member are connected to the same end of the telescopic member, and the vertical rod is telescopically assembled in the sleeve in the vertical direction.

[0013] As a further improvement, two sleeves, vertical rods, and telescopic components are arranged and spaced apart along the extension direction of the baffle hinge axis. The force-bearing component includes a connecting arm connecting the two telescopic components and a push block fixed on the connecting arm. The top surface of the push block is an arc-shaped surface and is used to cooperate with the protrusion push.

[0014] As a further improvement, the dust collector bag assembly includes a frame, a dust collector bag fixedly fitted outside the frame, and a dust collector bag gear fixedly installed on the top of the frame, with the vertical gear located above the dust collector bag gear; the mounting base includes a circular base body and an annular mounting plate and support block corresponding to each vertical gear, the annular mounting plate being arranged above the circular base body through the support block, the vertical gear being rotatably mounted on the top of the annular mounting plate, the dust collector bag gear being rotatably mounted on the top of the circular base body and located below the annular mounting plate, and the vertical plate extending downward through the annular mounting plate, the dust collector bag gear, and into the dust collector bag;

[0015] In the radial direction of the circular base, the mounting bracket has fixing rings arranged on both sides of the dust bag assembly. The outer side of the fixing ring is provided with external teeth that mesh with the dust bag gear, so as to drive the dust bag assembly to rotate around its own axis when the dust bag assembly revolves around the axis of the mounting bracket.

[0016] In addition to revolving around the circular base, the dust bag assembly can also rotate on its own axis, ensuring that each side of the dust bag assembly aligns with the lower air intake pipe, thus avoiding overuse on one side.

[0017] As a further improvement, the mounting base also includes a toothed ring on the outer periphery of the top of the circular base, and the dust collection box is equipped with a drive motor, which is equipped with a drive gear that meshes with the toothed ring to drive the circular base to rotate.

[0018] As a further improvement, the dust bag assembly is arranged in at least two rings at radial intervals along the circular base.

[0019] Increasing the number of dust bag components can improve airflow and thus increase dust removal efficiency.

[0020] As a further improvement, the first-end dust removal device also includes a flow guiding mechanism, which includes flow guiding plates hinged around a horizontal axis on the upper and lower sides of the lower air inlet pipe near the dust bag assembly. The flow guiding plates can swing up and down. The flow guiding mechanism also includes an L-shaped rod connected to the flow guiding plate, a connecting sleeve fixed to the top of the L-shaped rod, and a sliding rod inserted into the connecting sleeve. The outer circumferential surface of the mounting base is provided with a wave-shaped sliding groove, and the sliding rod passes into the sliding groove.

[0021] When the mounting base rotates, it can drive the guide plate to swing up and down repeatedly through the slide groove, slide rod, connecting sleeve, and L-shaped rod, thereby changing the air intake direction of the lower air intake pipe, so that the dust bag assembly can be directly blown in both the upper and lower directions, avoiding excessive use in one place.

[0022] As a further improvement, the backflushing mechanism includes a pulse canister, an air jet pipe, and nozzles mounted on the air jet pipe and corresponding one-to-one with the dust bag assembly.

[0023] As a further improvement, the initial dust removal device also includes a collection hopper located below.

[0024] The beneficial effects of this invention are:

[0025] 1. The rotation of the mounting base allows each dust bag assembly to revolve around the base, ensuring that each assembly is positioned to the side where the lower air inlet pipe is located. This allows the dust-laden gas to be evenly sprayed onto each assembly, preventing dust accumulation and clogging on those near the lower air inlet pipe. As the vertical plate inside each assembly revolves, the gear fixed to its top meshes with the internal teeth of the fixing ring. This allows the internal teeth of the fixing ring to reverse the gear, dividing the dust bag assembly's interior into a first chamber that always faces the lower air inlet pipe and a second chamber that always faces away from it. When the baffle approaches the lower air inlet pipe, the baffle drive assembly moves the baffle from a vertical position to an inclined position. At this time, when the back-blowing mechanism sprays air towards the dust collector bag assembly, the baffle blocks the first chamber, preventing dust from falling off as soon as the back-blowing mechanism sprays air into the first chamber. The air intake in the lower air inlet pipe then blows the dust towards the dust collector bag assembly, causing the dust to be re-adsorbed onto the dust collector bag assembly, thereby improving the dust removal efficiency. When the baffle moves away from the lower air inlet pipe, the baffle drive assembly moves the baffle from an inclined position to a vertical position, allowing the back-blowing mechanism to back-blow the first and second chambers, thereby blowing off the dust and preventing dust accumulation.

[0026] 2. By utilizing the rotation of the baffle with the mounting base, and in conjunction with protrusions, telescopic components, force-bearing components, and springs, the baffle can be switched between vertical and tilted states without adding a power source or control device, thus saving costs.

[0027] 3. In addition to revolving around the circular base, the dust bag assembly can also rotate on its own axis, so that each side of the dust bag assembly can correspond to the lower air inlet pipe, avoiding overuse on one side.

[0028] 4. Increasing the number of dust collector bag components can improve airflow and thus increase dust collection efficiency.

[0029] 5. When the mounting base rotates, it can drive the guide plate to swing up and down repeatedly through the slide groove, slide rod, connecting sleeve, and L-shaped rod, thereby changing the air intake direction of the lower air intake pipe, so that the dust bag assembly can be directly blown in both the upper and lower directions, avoiding excessive use in one place. Attached Figure Description

[0030] Figure 1 This is the front view of the flue gas dust removal equipment;

[0031] Figure 2 This is a side view of a flue gas dust removal device;

[0032] Figure 3 for Figure 2 A partial sectional view of section AA in the image;

[0033] Figure 4 for Figure 3Enlarged view of point B in the middle;

[0034] Figure 5 This is a partial top-view view of the flue gas dust removal equipment after the top cover has been removed.

[0035] Figure 6 This is a top view of the baffle plate in the flue gas dust removal equipment;

[0036] Figure 7 for Figure 6 A sectional view of section EE;

[0037] Figure 8 A three-dimensional view of the flow guiding mechanism in a flue gas dust removal device;

[0038] Figure 9 This is a front view of the flow guiding mechanism in a flue gas dust removal device;

[0039] Figure 10 This is a side view of the flow guiding mechanism in a flue gas dust removal device.

[0040] Figure 11 A three-dimensional view of a flue gas dust removal device, showing the assembly of a circular base, gear ring, drive motor, gears, a set of support blocks, and annular mounting plate.

[0041] Figure 12 A front view of a flue gas dust removal device, showing the circular base, toothed ring, a set of support blocks, and annular mounting plate assembled together.

[0042] Figure 13 This is a schematic diagram of the dust collection bag assembly installed on the mounting base in a flue gas dust removal device.

[0043] Figure 14 for Figure 13 Enlarged view of point C (the baffle is tilted);

[0044] Figure 15 for Figure 13 Enlarged view of point D (the baffle is in a vertical position);

[0045] Figure 16 A schematic diagram showing the gear drive assembly and the fixed ring assembled together in a flue gas dust removal device;

[0046] Figure 17 This is a schematic diagram of the dust collector bag assembly in a flue gas dust removal device.

[0047] Figure 18 This is a schematic diagram of the skeleton in the dust collector bag assembly;

[0048] Figure 19 This is a schematic diagram showing the assembly of the vertical plate, baffle, vertical plate gear, drive component, and spring in the windbreak mechanism of a flue gas dust removal device.

[0049] Explanation of reference numerals in the attached figures:

[0050] 11. Box body; 12. Partition; 121. Round hole; 122. Annular groove; 123. Through hole; 13. Bag chamber; 14. Air chamber;

[0051] 2. Mounting base; 21. Circular base body; 22. Gear ring; 23. Annular mounting plate; 24. Support block; 25. Slide groove; 26. Circular mounting hole;

[0052] 31. Drive motor; 32. Drive gear;

[0053] 4. Dust collector bag assembly; 41. Dust collector bag; 42. Frame; 43. Dust collector bag gear; 44. First chamber; 45. Second chamber;

[0054] 5. Backflush mechanism;

[0055] 61. Vertical plate; 62. Vertical plate gear; 63. Baffle; 641. Mounting bracket; 642. Internal gear; 643. Frame body; 644. Fixing ring; 645. External gear; 651. Telescopic component; 652. Support arm; 653. Connecting arm; 654. Vertical rod; 655. Sleeve; 656. Push block; 657. Compression spring; 658. Hinge rod; 659. Protrusion; 660. Fixing ring;

[0056] 7. Material collection hopper;

[0057] 81. Lower air intake pipe; 82. Upper air exhaust pipe;

[0058] 91. Deflector plate; 92. L-shaped rod; 93. Connecting sleeve; 94. Slide rod. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0060] A specific embodiment of a flue gas dust removal device:

[0061] like Figures 1 to 19 As shown, a flue gas dust removal device includes a dust removal box, a back-blowing mechanism 5, a lower air inlet pipe 81, an upper air outlet pipe 82, and a dust removal device.

[0062] like Figures 1 to 8As shown, the dust collector includes a housing 11 and a partition 12 mounted on the housing 11. The internal chambers of the dust collector are divided into a bag chamber 13 located below the partition 12 and an air chamber 14 located above the partition 12. A lower inlet pipe 81 and an upper outlet pipe 82 are both fixedly mounted on the dust collector. Specifically, the lower inlet pipe 81 is connected to the right side of the dust collector, and the upper outlet pipe 82 is connected to the left side of the dust collector. The lower inlet pipe 81 communicates with the bag chamber 13, and the upper outlet pipe 82 communicates with the air chamber 14. The left end of the lower inlet pipe 81 extends into the interior of the housing 11. It should be noted that "left" and "right" are only relative concepts and do not limit the structure.

[0063] The partition 12 has a through hole 121 extending vertically, and an annular groove 122 is formed on the inner wall of the hole 121. A through hole 123 is also formed on the partition 12, and the through hole 123 communicates with the annular groove 122.

[0064] There are three dust removal devices, arranged sequentially in a left-right direction. The dust removal device closest to the lower air inlet pipe 81 is defined as the first-end dust removal device, and the other two are designated as second-end dust removal devices. The three dust removal devices have similar structures; the first-end dust removal device will be used as an example for description.

[0065] The initial dust removal device includes a mounting base 2, a rotary drive mechanism, a dust bag assembly 4, a windbreak mechanism, a collection hopper 7, and a flow guiding mechanism.

[0066] Mounting base 2 is rotatably mounted on partition 12 about an upwardly extending axis. Mounting base 2 includes a circular base 21, a toothed ring 22, an annular mounting plate 23, and a support block 24. The toothed ring 22 is fixedly fitted on the top of the circular base 21, and the annular mounting plate 23 is fixedly mounted on the circular base 21 by the support block 24.

[0067] The circular base 21 has three concentric rings of circular mounting holes 26 arranged from the center to the edge. A circular mounting hole 26 is also located at the center of the circular base 21. These circular mounting holes 26 are used to mount the dust bag assembly 4. Each ring of circular mounting holes 26 has multiple holes evenly distributed around the axis of the circular base 21. A wavy groove 25 is formed on the outer bottom surface of the circular base 21. The edge of the toothed ring 22 is located within the annular groove 122, and the mounting base 2 is suspended from the partition plate 12 by the toothed ring 22, with its lower end located below the partition plate 12.

[0068] There are multiple annular mounting plates 23, each corresponding to a circular mounting hole 26 except for the one at the center. However, no annular mounting plate 23 is installed at the circular mounting hole 26 located at the center of the circular base 21. The annular mounting plates 23 are fixedly mounted on the circular base 21 by two support blocks 24 located on either side of the circular mounting hole 26. The annular mounting plates 23 are positioned above the circular base 21 with a gap between them.

[0069] The flow guiding mechanism includes a flow guide plate 91, an L-shaped rod 92, a connecting sleeve 93, and a sliding rod 94. There are two flow guide plates 91 arranged vertically, with their right ends hinged to the upper and lower sides of the lower air intake pipe 81 around a forward-backward extending axis. The flow guide plates 91 can swing up and down to adjust the direction of air intake, allowing the flue gas to be sprayed upwards or downwards into the bag chamber 13. There are two L-shaped rods 92, with their vertical sides hinged to the front and rear sides of the two flow guide plates 91 around a forward-backward extending axis. The horizontal sides of the two L-shaped rods 92 are connected by the connecting sleeve 93. The sliding rod 94 is inserted into the connecting sleeve 93 and into a sliding groove 25. The sliding groove 25 drives the sliding rod 94 to slide up and down reciprocally, which in turn drives the flow guide plate 91 to swing up and down via the connecting sleeve 93 and the L-shaped rod 92.

[0070] The rotary drive mechanism includes a drive motor 31 and a drive gear 32. The drive motor 31 is fixedly mounted on the partition plate 12. The drive gear 32 is located in the through hole 123 and is mounted on the output shaft of the drive motor 31. The drive gear 32 meshes with the gear ring 22. The drive motor 31 drives the gear ring 22 and the circular seat 21 on which the gear ring 22 is located to rotate through the drive gear 32.

[0071] like Figure 13 as well as Figure 17 , Figure 18 As shown, the number of dust bag assemblies 4 is equal to and corresponds one-to-one with the number of circular mounting holes 26. Each dust bag assembly 4 includes a dust bag 41, a frame 42, and a dust bag gear 43. The dust bag 41 is an open bag at the top and closed at the sides and bottom. The dust bag 41 is fitted over the frame 42, and the dust bag 41 and frame 42 are fixed together. The dust bag 41 and frame 42 pass through the circular mounting holes 26 vertically. The top of the frame 42 is fixedly mounted on the inner wall of the dust bag gear 43, which can be achieved through welding or other methods. The dust bag gear 43 is supported on a circular base 21 and is rotatably mounted on top of the circular base 21 around the axis of the circular mounting holes 26. The dust bag gear 43 is located below the annular mounting plate 23.

[0072] like Figure 5 , Figures 13 to 19As shown, the windbreak mechanism includes a vertical plate 61, a vertical plate gear 62, a baffle 63, a gear drive assembly, and a baffle drive assembly. The number of vertical plates 61, vertical plate gears 62, and baffles 63 are equal to the number of annular mounting plates 23, and they correspond one-to-one. The bottom of the vertical plate 61 extends into the frame 42 and the dust bag 41, dividing the interior of the dust bag 41 into two chambers. The top of the vertical plate 61 is located above the annular mounting plate 23. The vertical plate gear 62 is fixedly fitted onto the top of the vertical plate 61 and is rotatably mounted on the annular mounting plate 23 around the axis of the circular mounting hole 26. The vertical plate 61 passes through the annular mounting plate 23 and the dust bag gear 43 from top to bottom before being inserted into the dust bag assembly 4. It should be noted that although the vertical plate 61 is inserted into the dust bag assembly 4, there is still a certain gap between the vertical plate 61 and the dust bag assembly 4, allowing relative rotation between them. In other words, the two chambers separated by the vertical plate 61 inside the dust bag 41 are not completely isolated, but the gap between the vertical plate 61 and the inner wall of the dust bag assembly 4 is small, resulting in greater resistance when air flows through.

[0073] The baffle 63 is rotatably mounted on the top of the vertical plate 61 around the horizontal axis. When the baffle 63 is rotated to the vertical position, the baffle 63 and the vertical plate 61 are coplanar.

[0074] The gear drive assembly drives the vertical plate 61, the vertical plate gear 62 and the baffle 63 to rotate, so that one of the chambers in the dust bag assembly 4 always faces the lower air inlet pipe 81 and the other chamber always faces away from the lower air inlet pipe 81. Here, the chamber that always faces the lower air inlet pipe 81 is defined as the first chamber 44 and the chamber that always faces away from the lower air inlet pipe 81 is defined as the second chamber 45.

[0075] The gear drive assembly includes a mounting bracket 641 and internal gears 642. The mounting bracket 641 is fixedly mounted on the housing 11 and remains stationary during use. The mounting bracket 641 includes a frame 643 and four retaining rings 644. Retaining rings 644 are positioned between adjacent circular mounting holes 26 and on the outermost circular mounting hole 26. The outermost retaining ring 644 is fixedly mounted on the inner wall of the housing 11, and adjacent retaining rings 644 are connected by the frame 643. The retaining rings 644 are coaxially arranged with the circular base 21. Multiple internal gears 642 are evenly distributed around the circumference of the retaining rings 644 and can mesh with the vertical gear 62.

[0076] Taking the clockwise rotation of the circular base 21 as an example, in the initial state, the surface of each vertical plate 61 faces the lower air inlet pipe 81. The vertical plate 61, the vertical plate gear 62, and the baffle 63 all revolve clockwise with the circular base 21. If there is no internal gear 642, the vertical plate 61 will rotate with the circular base 21, which cannot guarantee that the surface of the vertical plate 61 always faces the lower air inlet pipe 81. Consequently, it cannot guarantee that in the dust bag assembly 4, one of the two chambers separated by the vertical plate 61 always faces the lower air inlet pipe 81 and the other faces away from the lower air inlet pipe 81. With the addition of the internal gear 642, when the vertical plate gear 62 rotates to the position where it meshes with the internal gear 642, the vertical plate gear 62 is driven by the internal gear 642 to rotate counterclockwise around the axis of the circular mounting hole 26, thereby driving the vertical plate 61 to rotate counterclockwise, which is equivalent to turning the vertical plate 61 back, so that the plate surface of the vertical plate 61 always faces the lower air intake pipe 81, and the first chamber 44 always faces the lower air intake pipe 81 and the second chamber 45 always faces away from the lower air intake pipe 81.

[0077] The outer wall of the fixing ring 644 is provided with external teeth 645. The external teeth 645 are continuous in the circumference and mesh with the dust bag gear 43. When the dust bag assembly 4 revolves with the circular seat 21, the meshing of the external teeth 645 and the dust bag gear 43 causes the dust bag assembly 4 to rotate around its own axis, and the direction of rotation is opposite to the direction of rotation of the vertical plate 61.

[0078] It should be noted that, since the dust bag gear 43 and the vertical plate gear 62 are relatively independent, the dust bag assembly 4 and the vertical plate 61 are relatively independent, the rotation of the vertical plate 61 and the rotation between the dust bag assembly 4 are also relatively independent, each rotating independently and without interfering with each other.

[0079] The function of the baffle drive assembly is to drive the baffle 63 to rotate, so that the baffle 63 near the lower air intake pipe 81 tilts and blocks the first chamber 44, reducing the amount of gas injected into the first chamber 44 by the nozzle; the baffle drive assembly also makes the baffle 63 away from the lower air intake pipe 81 vertical, so that the top openings of the first chamber 44 and the second chamber 45 are not blocked, and the backflushing mechanism 5 can backflushing the first chamber 44 and the second chamber 45 normally.

[0080] The baffle drive assembly includes a telescopic component 651, a force-bearing component, a vertical rod 654, a sleeve 655, a compression spring 657, and a fixing ring 660. The telescopic component 651, the force-bearing component, the vertical rod 654, the sleeve 655, and the compression spring 657 are all located on the side of the baffle 63 facing the second chamber 45.

[0081] There are two telescopic components 651, and the two telescopic components 651 are arranged at intervals along the extension direction of the hinge axis of the baffle 63. The telescopic component 651 includes a support arm 652 and a hinge rod 658 that are telescopically assembled together, and the hinge rod 658 is hinged to the baffle 63.

[0082] The load-bearing components include a connecting arm 653 and a push block 656. The connecting arm 653 connects the support arms 652 of the two telescopic components 651, and the push block 656 is fixed to the top of the connecting arm 653. The top surface of the push block 656 is an arc-shaped surface. When the baffle 63 is in a vertical state, the top surface of the push block 656 is located above the top of the baffle 63.

[0083] The compression spring 657 is connected between the push block 656 and the vertical gear 62, and applies an upward elastic force to the push block 656, so that when the push block 656 is not subjected to a downward external force, it can drive the connecting arm 653 and the telescopic member 651 to move upward, thereby driving the baffle 63 to rotate to a vertical state.

[0084] There are two sleeves 655, which are fixedly installed on the top of the vertical plate gear 62. There are also two vertical rods 654, which are telescopically assembled in the sleeves 655 in the vertical direction. The upper ends of the two vertical rods 654 are respectively connected to the two support arms 652, thereby guiding the vertical movement of the telescopic component 651.

[0085] The fixing ring 660 is fixedly installed on the frame 643. The fixing ring 660 is coaxially arranged with the circular base 21. The number of fixing rings 660 is equal to the number of rings in the circular mounting holes 26 and corresponds one-to-one. The fixing ring 660 is located above the push block 656. A protrusion 659 is integrally formed on the bottom side of the fixing ring 660 near the lower air intake pipe 81. When the push block 656 rotates to the protrusion 659, the push block 656 contacts the protrusion 659, and the protrusion 659 presses down on the push block 656. The push block 656 overcomes the force of the compression spring 657 and drives the telescopic member 651 to move downward. At the same time, the hinge rod 658 extends from the support arm 652, causing the baffle 63 to flip downward to an inclined state and cover the first chamber 44.

[0086] After the protrusion 659 separates from the push block 656, the push block 656 moves upward under the action of the compression spring 657, and the baffle 63 flips upward to a vertical position.

[0087] The collecting hopper 7 collects the dust that falls from the dust collection bag 41.

[0088] The back-blowing mechanism 5 is located at the top of the dust collection box and typically includes a pulse canister, a jet pipe, and nozzles. The pulse canister provides pulse gas, and one end of the jet pipe is connected to the pulse canister. The nozzles are installed below the other end, and each dust bag assembly 4 on the mounting base 2 corresponds to one of them. The nozzles blow the dust bag 41, blowing off the dust adsorbed on the outer wall of the dust bag 41.

[0089] The structure of the secondary dust removal device is similar to that of the primary dust removal device, except that the secondary dust removal device does not have a windbreak mechanism or a flow guiding mechanism.

[0090] The working process of the flue gas dust removal equipment is as follows:

[0091] Taking the initial dust removal device as an example, the rotary drive mechanism drives the mounting base 2 to rotate, and the mounting base 2 drives the dust bag assembly 4 to revolve around the axis of the mounting base 2. While the dust bag assembly 4 is revolving, the dust bag gear 43 meshes with the external gear 645 on the fixed ring 644, driving the dust bag assembly 4 to rotate on its own axis. That is, the dust bag assembly 4 revolves around the central axis of the mounting base 2, so that the dust bags 41 of each dust bag assembly 4 can rotate to the lower air inlet pipe 81; at the same time, the dust bags 41 in the dust bag assembly 4 can also rotate on their own axis, so that all sides of the dust bags 41 can face the lower air inlet pipe 81, thereby improving the dust removal uniformity of each dust bag 41 and avoiding local blockage of the dust bags 41.

[0092] Mounting base 2 simultaneously drives vertical plate 61, vertical plate gear 62, and baffle 63 to revolve around the axis of mounting base 2. When vertical plate gear 62 rotates to the position of meshing with internal gear 642, it is driven to rotate in the opposite direction by internal gear 642. Through meshing with multiple internal gears 642, the first chamber 44 can always face the lower air intake pipe 81 and the second chamber 45 can always face away from the lower air intake pipe 81.

[0093] When the push block 656 moves to the position of the protrusion 659, the push block 656 and the telescopic member 651 are pressed downward by the protrusion 659, thereby causing the baffle 63 to flip downward toward the first chamber 44 and block the first chamber 44. When the back-blowing mechanism 5 sprays gas downward, the first chamber 44 near the lower air inlet pipe 81 is blocked, reducing the air intake of the first chamber 44. The dust bag 41 part corresponding to the first chamber 44 will not be back-blown, and the dust will not be blown back onto the dust bag 41 by the air intake due to back-blowing.

[0094] When the push block 656 moves away from the protrusion 659, the telescopic member 651 is pushed upward by the compression spring 657, causing the baffle 63 to flip upward to a vertical state. When the back-blowing mechanism 5 sprays gas downward, the first chamber 44 and the second chamber 45 can both take in air to back-blow the dust bag 41.

[0095] In other embodiments, the external teeth 645 on the fixing ring 644 and the dust bag gear 43 on the dust bag assembly 4 can be removed, so that the dust bag assembly 4 can only revolve with the mounting base 2.

[0096] In this embodiment, the baffle drive assembly includes a telescopic member 651, a vertical rod 654, a sleeve 655, a force-bearing member, and a compression spring 657. In other embodiments, the vertical rod 654 and the sleeve 655 can be omitted. In other embodiments, the baffle 63 can be driven to rotate in the following way: an electric cylinder is installed on each vertical plate gear 62, one end of the electric cylinder is hinged to the vertical plate gear 62, and the other end is hinged to the baffle 63. The rotation of the baffle 63 is controlled by the extension and retraction of the electric cylinder. In order to power the electric cylinder, a collector and track system can be set between the circular base 21 and the dust collection box. For example, a collector is set on the circular base 21, and a conductive track is set on the inner wall of the dust collection box. The conductive track is coaxially arranged with the circular base 21, and the collector is in contact with the conductive track. When the circular base 21 rotates, electricity is conducted through the conductive track and the collector. In order to deal with scenarios where there is a lot of dust in the bag chamber 13, a dust cover can be used to cover the conductive track and the collector.

[0097] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A flue gas dust removal device, comprising a dust collection box, a lower inlet pipe disposed on the dust collection box, and a first-end dust removal device near the lower inlet pipe, the first-end dust removal device comprising a mounting base rotatably installed inside the dust collection box and a plurality of dust collection bag assemblies disposed on the mounting base; a back-blowing mechanism is provided on the top of the dust collection box; characterized in that, The first-end dust removal device also includes a windbreak mechanism, which includes a vertical plate located inside the dust bag assembly, a vertical plate gear fixed to the top of the vertical plate and rotatably mounted on the mounting base around a vertical axis, a baffle rotatably mounted on the top of the vertical plate around a horizontal axis, and a gear drive assembly and a baffle drive assembly. The gear drive assembly includes a mounting bracket fixed to the dust collector box. The mounting bracket includes a fixing ring arranged coaxially with the mounting base. The inner side of the fixing ring is provided with multiple circumferentially spaced internal teeth. When the vertical plate gear revolves with the mounting base, the internal teeth mesh with the vertical plate gear to drive the vertical plate gear to rotate in the opposite direction. This causes the vertical plate to divide the inner cavity of the dust collector bag assembly into a first chamber that always faces the lower air inlet pipe and a second chamber that always faces away from the lower air inlet pipe. The baffle has a vertical state and an inclined state that blocks the first chamber when rotating relative to the vertical plate. The baffle drive assembly is used to drive the baffle close to the lower air inlet pipe to rotate to the inclined state and drive the baffle away from the lower air inlet pipe to rotate to the vertical state.

2. The flue gas dust removal equipment according to claim 1, characterized in that, The baffle drive assembly includes a telescopic member, a force-bearing member, and a compression spring located in the baffle facing the second chamber. One end of the telescopic member is hinged to the baffle, and the other end is connected to the force-bearing member. The compression spring is pressed between the force-bearing member and the vertical plate gear to apply an upward elastic force to the force-bearing member so that the baffle is kept in a vertical state. When the baffle is in a vertical state, the top surface of the force-bearing member is located above the top of the baffle. The baffle drive assembly also includes a retaining ring on the mounting bracket. The bottom of the retaining ring near the lower air intake pipe has a protrusion, which is used to push the force-bearing component downward to place the baffle in an inclined state.

3. The flue gas dust removal equipment according to claim 2, characterized in that, The baffle drive assembly also includes a sleeve fixed on the vertical plate gear and a vertical rod on the telescopic member. The vertical rod and the force-bearing member are connected to the same end of the telescopic member, and the vertical rod is telescopically assembled in the sleeve in the vertical direction.

4. The flue gas dust removal equipment according to claim 3, characterized in that, The sleeve, vertical rod, and telescopic component are arranged in twos and spaced apart along the extension direction of the baffle hinge axis. The force-bearing component includes a connecting arm connecting the two telescopic components and a push block fixed on the connecting arm. The top surface of the push block is an arc-shaped surface and is used to cooperate with the protrusion for pushing.

5. The flue gas dust removal equipment according to claim 1, characterized in that, The dust collector bag assembly includes a frame, a dust collector bag fixedly fitted outside the frame, and a dust collector bag gear fixedly installed on the top of the frame, with the vertical gear located above the dust collector bag gear. The mounting base includes a circular base and an annular mounting plate and a support block corresponding to each vertical gear. The annular mounting plate is arranged above the circular base through the support block. The vertical gear is rotatably mounted on the top of the annular mounting plate, and the dust collector bag gear is rotatably mounted on the top of the circular base and located below the annular mounting plate. The vertical plate passes downward through the annular mounting plate and the dust collector bag gear in sequence and extends into the dust collector bag. In the radial direction of the circular base, the mounting bracket has fixing rings arranged on both sides of the dust bag assembly. The outer side of the fixing ring is provided with external teeth that mesh with the dust bag gear, so as to drive the dust bag assembly to rotate around its own axis when the dust bag assembly revolves around the axis of the mounting bracket.

6. The flue gas dust removal equipment according to claim 5, characterized in that, The mounting base also includes a toothed ring on the outer periphery of the top of the circular base. The dust collection box is equipped with a drive motor, and the drive motor is equipped with a drive gear that meshes with the toothed ring to drive the circular base to rotate.

7. The flue gas dust removal equipment according to claim 5, characterized in that, The dust bag assembly is arranged in at least two rings at radial intervals along the circular base.

8. The flue gas dust removal equipment according to any one of claims 1-7, characterized in that, The first-end dust removal device also includes a flow guiding mechanism, which includes flow guiding plates hinged around a horizontal axis on the upper and lower sides of the lower air inlet pipe near the dust bag assembly. The flow guiding plates can swing up and down. The flow guiding mechanism also includes an L-shaped rod connected to the flow guiding plate, a connecting sleeve fixed to the top of the L-shaped rod, and a sliding rod inserted into the connecting sleeve. The outer circumferential surface of the mounting base is provided with a wave-shaped sliding groove, and the sliding rod passes into the sliding groove.

9. The flue gas dust removal equipment according to any one of claims 1-7, characterized in that, The back-flushing mechanism includes a pulse canister, an air jet pipe, and nozzles mounted on the air jet pipe that correspond one-to-one with the dust bag assembly.

10. The flue gas dust removal equipment according to any one of claims 1-7, characterized in that, The initial dust removal device also includes a collection hopper located below.

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