A blast furnace bag dust removal device and treatment method

Abstract

The present invention relates to the technical field of dust removal, and specifically to a blast furnace bag dust removal device and treatment method, comprising a first shell and a bag arranged in the first shell, the bag opening facing upward; a lifting rope is connected to the bottom of the bag located in the first shell, the lifting rope can drive the bottom of the bag to rise and fall along the height direction of the first shell, the bottom of the bag has a highest position and a lowest position in its moving stroke, the highest position and the lowest position are symmetrically arranged about the connection between the bag and the first shell, when the bottom of the bag is at the lowest position, the bottom of the bag is located below the connection between the bag and the first shell, the bag is located in the first shell and the opening of the bag faces upward, when the bottom of the bag is at the highest position, the bottom of the bag is located above the connection between the bag and the first shell, the bag is located above the first shell, and the opening of the bag faces downward. The present invention improves the cleaning effect of the bag.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal, and in particular to a blast furnace bag dust removal device and a treatment method. Background Art

[0002] Blast furnace dry dust removal is the mainstream process for secondary dust removal of blast furnace gas. After the gas containing smoke enters the bag filter, the dust is intercepted and deposited on the surface of the filter bag. When the powder layer reaches a certain thickness, the resistance of the filter bag will increase and the air permeability will decrease. At this time, the dust cleaning system is used to make the powder layer peel off and settle, and the resistance of the filter bag is restored to ensure the effect of filtering and dust removal. Therefore, the bag filter is a periodic dust collection and dust cleaning process. The current method of dust cleaning is to use N2 pulse cleaning, which has the following disadvantages: N2 pulse cleaning uses nitrogen resources, and it is necessary to quote expensive nitrogen over a long distance when using it, which will increase fixed asset investment and production and operation costs.

[0003] Chinese patent application CN109395487A discloses a blast furnace bag dust removal device, including a dust removal cylinder and a storage tank for temporarily storing dust-removed coal gas, which are interconnected. A plurality of groups of filter bags for filtering are arranged in the dust removal cylinder; a blowing assembly is also arranged in the dust removal cylinder for blowing air to the filter bags to clean impurities on the filter bags, the storage tank is connected to the blowing assembly for supplying dust-removed coal gas to the blowing assembly for blowing cleaning, and the dust removal cylinder is also provided with an exhaust pipe for discharging the blown gas.

[0004] The above scheme adopts a cleaning method of blowing up the filter bag instead of the original nitrogen pulse vibration bag cleaning method, which avoids the filter bag from being damaged during cleaning. However, when the filter bag is cleaned by the above device, the dust attached to the filter bag will still circulate in the cavity formed by the filter bag after being blown down by the airflow. When the airflow stops flowing, the dust will attach to the inner wall of the filter bag again, and the cleaning effect is poor. Summary of the invention

[0005] In view of the above problems, a blast furnace bag dust removal equipment and treatment method are provided. When the bag needs to be cleaned, the reel is started, and the reel reels the lifting rope. The lifting rope drives the bottom of the bag to rise along the height direction of the first shell through the connecting frame. As the bottom of the bag is lifted, the inner wall of the bag gradually curls. When the bottom of the bag rises to the height of the connection between the bag and the first shell under the action of the lifting rope, part of the dust attached to the bag falls off due to the bending of the bag. As the lifting rope continues to lift the bottom of the bag, the bottom of the bag gradually becomes higher than the height of the connection between the bag and the first shell, and the dust originally located at the first shell The inner wall of the cloth bag is turned over by the traction of the lifting rope, so that under the action of the lifting rope, the original inner wall of the cloth bag becomes the outer wall because of the turning over. At this time, the dust falling on the cloth bag is no longer accepted by the cloth bag. In order to improve the cleaning effect of the cloth bag, a blowing unit is provided below the bottom of the cloth bag and can be raised and lowered synchronously with the bottom of the cloth bag. When the cloth bag is turned over, the blowing unit is located on the inside of the cloth bag. The blowing unit is started when the bottom of the cloth bag rises to the highest position. The dust on the cloth bag that cannot fall off by its own gravity or the bending of the cloth bag can fall off under the action of the flowing gas blown out by the blowing unit, thereby improving the cleaning effect of the cloth bag.

[0006] To solve the problems of the prior art, the present invention provides a blast furnace bag dust removal device, comprising a first shell and a bag arranged in the first shell, with the bag opening facing upward; a lifting rope is connected to the bottom of the bag in the first shell, and the lifting rope can drive the bottom of the bag to rise and fall along the height direction of the first shell, and the bottom of the bag has a highest position and a lowest position in its moving stroke, and the highest position and the lowest position are symmetrically arranged about the connection between the bag and the first shell, when the bottom of the bag is at the lowest position, the bottom of the bag is located below the connection between the bag and the first shell, the bag is located in the first shell and the opening of the bag faces upward, and when the bottom of the bag is at the highest position, the bottom of the bag is located above the connection between the bag and the first shell, the bag is located above the first shell, and the opening of the bag faces downward.

[0007] Preferably, a blowing unit is provided below the bottom of the cloth bag and moves synchronously with the bottom of the cloth bag in the vertical direction. When the bottom of the cloth bag reaches the highest position, the blowing unit is started to blow the flowing air from the inside of the cloth bag to the outside of the cloth bag.

[0008] Preferably, a feed opening is opened at the bottom of the cloth bag, an extension tube is arranged below the feed opening along the extension direction of the feed opening, a hair dryer is arranged on the outer periphery of the extension tube, the hair dryer and the extension tube are slidably matched along the extension direction of the extension tube, and when the bottom of the cloth bag rises to the highest position, the hair dryer moves from top to bottom along the extension direction of the extension tube and blows out airflow.

[0009] Preferably, a driving unit for driving the hair dryer to move along the extension direction of the extension tube is provided at the bottom of the hair dryer, the driving unit includes a lifting frame, a sliding groove is provided on the side wall of the extension tube along the extension direction of the extension tube, the lifting frame is key-connected with the sliding groove of the extension tube and slidingly cooperates with the extension tube along the extension direction of the extension tube, a first gear ring is rotatably provided on the upper part of the lift, the first gear ring is sleeved on the outside of the extension tube, threads are provided on the outer wall of the extension tube and on the inner wall of the first gear ring, and the extension tube is threadedly cooperated with the first gear ring.

[0010] Preferably, a second gear ring is fixedly provided at the bottom of the hair dryer, the second gear ring is sleeved on the extension tube, and the second gear ring rotates synchronously with the first gear ring.

[0011] Preferably, an annular electromagnet is fixedly provided on the upper part of the first shell, and the cover plate is vertically sleeved on the periphery of the lifting rope and can slide with the lifting rope. When the bottom of the cloth bag is at the lowest position, the cover plate covers the electromagnet, and the electromagnet is energized to adsorb the cover plate.

[0012] Preferably, a second shell is provided on the upper fixed cover of the first shell, and the second shell forms a cleaning cavity on the upper part of the first shell. When the bottom of the cloth bag is at the highest position, the cloth bag is located in the cleaning cavity.

[0013] Preferably, the bottom of the second shell is an annular structure, and a plurality of first through holes are evenly and vertically penetrated at the bottom of the second shell around the axis of the second shell. A dust collecting unit is provided at the bottom of the second shell, and the dust collecting unit includes a dust collecting ring rotatably arranged at the bottom of the second shell, and a dust collecting groove is vertically arranged on the dust collecting ring. When the dust collecting ring rotates, the dust collecting groove can coincide with the first through hole. A bottom plate is provided at the lower part of the dust collecting ring, and the bottom plate is an annular structure, and a plurality of second through holes are evenly arranged on the bottom plate around the axis of the bottom plate, and the second through holes are staggered with the vertical projections of the first through holes.

[0014] Preferably, a scraper that can rotate around the axis of the second shell is provided at the bottom of the second shell, the scraper is slidably matched with the bottom of the second shell, and a sweeping area formed when the scraper rotates completely overlaps with the bottom of the second shell.

[0015] The present invention also relates to a blast furnace bag dust removal treatment method, which uses a blast furnace bag dust removal device, and the specific steps are as follows: S1. When cleaning the cloth bag, the lifting rope drives the bottom of the cloth bag to rise along the height direction of the first shell, the bottom of the cloth bag rises from the lowest position to the highest position, the cloth bag is pulled out of the first shell by the lifting rope, and the opening of the cloth bag changes from vertically upward to vertically downward.

[0016] S2. The blowing unit rises synchronously with the bottom of the bag when the bottom of the bag rises. When the bottom of the bag reaches the highest position, the blowing unit starts and blows the flowing air from the inside of the bag to the outside of the bag. The dust attached to the outside of the bag is blown down by the flowing air, thus completing the cleaning of the bag.

[0017] Compared with the prior art, the present invention has the following beneficial effects: When the cloth bag needs to be cleaned, the reel is started and the reel reels the lifting rope. The lifting rope drives the bottom of the cloth bag to rise along the height direction of the first shell through the connecting frame. As the bottom of the cloth bag is lifted, the inner wall of the cloth bag gradually curls. When the bottom of the cloth bag rises to the height of the connection between the cloth bag and the first shell under the action of the lifting rope, part of the dust attached to the cloth bag falls off due to the bending of the cloth bag. As the lifting rope continues to lift the bottom of the cloth bag, the bottom of the cloth bag gradually rises above the height of the connection between the cloth bag and the first shell, and the inner wall of the cloth bag originally located in the first shell is lifted by the lifting rope. The bag is turned over under the traction of the lifting rope. In this way, the inner wall of the bag becomes the outer wall because of the turning over. At this time, the dust falling on the bag is no longer accepted by the bag. In order to improve the cleaning effect of the bag, a blowing unit is provided below the bottom of the bag and can be raised and lowered synchronously with the bottom of the bag. When the bag is turned over, the blowing unit is located on the inside of the bag. The blowing unit is started when the bottom of the bag rises to the highest position. The dust on the bag that cannot fall off by its own gravity or the bending of the bag can fall off under the action of the flowing gas blown out by the blowing unit, thereby improving the cleaning effect of the bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a blast furnace bag dust removal equipment.

[0019] Figure 2 It is a side view of a blast furnace bag dust removal equipment.

[0020] Figure 3 It is a blast furnace bag dust removal equipment Figure 2 Schematic cross-sectional view at AA in the middle.

[0021] Figure 4 A cutaway perspective diagram of a blast furnace bag dust removal device Figure 1 .

[0022] Figure 5 It is a blast furnace bag dust removal equipment Figure 4 A local enlarged schematic diagram of point B in the middle.

[0023] Figure 6 It is a blast furnace bag dust removal equipment Figure 4 A partial enlarged schematic diagram of point C in the middle.

[0024] Figure 7A cutaway perspective diagram of a blast furnace bag dust removal device Figure 2 .

[0025] Figure 8 It is a blast furnace bag dust removal equipment Figure 7 A local enlarged schematic diagram of point D in the middle.

[0026] Fig. 9 It is a three-dimensional schematic diagram of a blast furnace bag dust removal equipment with the second shell removed.

[0027] Fig.10 It is a cutaway stereoscopic schematic diagram of a blast furnace bag dust removal equipment when the bag is used for dust removal.

[0028] Fig.11 It is a cutaway three-dimensional schematic diagram of a blast furnace bag dust removal equipment when the bag is driven by a lifting rope to rise from the lowest position to the highest position.

[0029] Fig.12 It is a blast furnace bag dust removal equipment Fig.11 A partial enlarged schematic diagram of point E in the middle.

[0030] The numbers in the figure are: 1. first shell; 11. cloth bag; 111. feeding port; 2. lifting rope; 21. connecting frame; 22. winder; 3. blowing unit; 31. blower; 32. extension tube; 321. slideway; 33. driving unit; 331. first gear ring; 332. lifting frame; 333. first gear; 334. first double-axis motor; 335. second gear ring; 336. second gear; 4. cover plate; 41. introduction hole; 5. electromagnet; 6. second shell; 61. connecting port; 62. first through hole; 7. dust collecting unit; 71. dust collecting ring; 711. dust collecting slot; 72. bottom plate; 721. second through hole; 73. second double-axis motor; 74. third gear ring; 75. third gear; 76. scraper; 77. fourth gear; 78. fourth gear ring; 79. sleeve; 791. stop hole. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figure 1-Figure 4 , Fig.10 and Fig.11: A blast furnace bag dust removal equipment, comprising a first shell 1 and a bag 11 arranged in the first shell 1, with the opening of the bag 11 facing upward; a lifting rope 2 is connected to the bottom of the bag 11 located in the first shell 1, and the lifting rope 2 can drive the bottom of the bag 11 to rise and fall along the height direction of the first shell 1, and the moving stroke of the bottom of the bag 11 has a highest position and a lowest position, and the highest position and the lowest position are symmetrically arranged about the connection between the bag 11 and the first shell 1. When the bottom of the bag 11 is at the lowest position, the bottom of the bag 11 is located below the connection between the bag 11 and the first shell 1, the bag 11 is located in the first shell 1 and the opening of the bag 11 faces upward, and when the bottom of the bag 11 is at the highest position, the bottom of the bag 11 is located above the connection between the bag 11 and the first shell 1, the bag 11 is located above the first shell 1, and the opening of the bag 11 faces downward.

[0033] A connecting frame 21 is provided between the bottom of the cloth bag 11 and the lifting rope 2, and the lifting rope 2 is fixedly connected to the bottom of the cloth bag 11 through the connecting frame 21. A discharge port 111 is provided through the bottom of the cloth bag 11 in the vertical direction. By providing the connecting frame 21 between the lifting rope 2 and the cloth bag 11, the dust in the cloth bag 11 can be smoothly discharged from the discharge port 111. When the device is performing dust removal, the cloth bag 11 is located in the first shell 1, that is, at this time, the bottom of the cloth bag 11 is located below the connection between the first shell 1 and the cloth bag 11. In this way, the cloth bag 11 located in the first shell 1 is opened upward, and dust enters the cloth bag 11 from the upper opening of the cloth bag 11 driven by flowing air. Since the cloth bag 11 itself is breathable, air can pass through the cloth bag 11. The cloth bag 11 passes through the cloth bag 11, and the dust is intercepted by the cloth bag 11. After the cloth bag 11 collects a rated amount of dust, the dust is discharged. After long-term use, a large amount of dust will adhere to the inner wall of the cloth bag 11 located in the first shell 1, and it cannot be cleaned. The existing cleaning method is to clean the cloth bag 11 located in the first shell 1 through airflow, so that the dust falling from the inner wall of the cloth bag 11 is still located in the cloth bag 11, and there is a situation of secondary attachment to the cloth bag 11. Because the cloth bag 11 is set with its opening facing upward, the cloth bag 11 always has a dust-receiving effect. In order to solve the above problem, a lifting rope 2 is provided, and a reel 22 is provided on the upper part of the lifting rope 2. The upper end of the lifting rope 2 is wound in the reel 22 The reel 22 can reel in or release the lifting rope 2. The specific working principle is as follows: when the cloth bag 11 needs to be cleaned, the reel 22 is started, and the reel 22 reels the lifting rope 2. The lifting rope 2 drives the bottom of the cloth bag 11 to rise along the height direction of the first shell 1 through the connecting frame 21. As the bottom of the cloth bag 11 is lifted, the inner wall of the cloth bag 11 gradually curls. When the bottom of the cloth bag 11 rises to the height of the connection between the cloth bag 11 and the first shell 1 under the action of the lifting rope 2, part of the dust attached to the cloth bag 11 falls off due to the bending of the cloth bag 11. As the lifting rope 2 continues to lift the bottom of the cloth bag 11, the bottom of the cloth bag 11 gradually becomes higher than the height of the connection between the cloth bag 11 and the first shell 1. The dust originally located at the first The inner wall of the bag 11 in the shell 1 is turned over under the traction of the lifting rope 2, so that under the action of the lifting rope 2, the original inner wall of the bag 11 becomes the outer wall due to the turning over. At this time, the dust falling on the bag 11 is no longer received by the bag 11. In order to improve the cleaning effect of the bag 11, a blowing unit 3 that can be raised and lowered synchronously with the bottom of the bag 11 is provided below the bottom of the bag 11. When the bag 11 is turned over, the blowing unit 3 is located inside the bag 11. The blowing unit 3 is started when the bottom of the bag 11 rises to the highest position. The dust on the bag 11 that cannot fall by its own gravity or the bending of the bag 11 can fall under the action of the flowing gas blown by the blowing unit 3, thereby improving the cleaning effect of the bag 11. After the cleaning is completed, the reel 22 releases the lifting rope 2 so that the bottom of the bag 11 drops to the lowest position.

[0034] Reference Figure 3 : A blowing unit 3 is arranged below the bottom of the cloth bag 11 and moves synchronously with the bottom of the cloth bag 11 in the vertical direction. When the bottom of the cloth bag 11 reaches the highest position, the blowing unit 3 is started to blow the flowing air from the inside of the cloth bag 11 to the outside of the cloth bag 11.

[0035] Reference Figure 3 and Figure 4 A feed opening 111 is provided at the bottom of the cloth bag 11, and an extension tube 32 is arranged below the feed opening 111 along the extension direction of the feed opening 111. The hair dryer 31 is sleeved on the outer periphery of the extension tube 32, and the hair dryer 31 and the extension tube 32 are slidably matched along the extension direction of the extension tube 32. When the hair dryer 31 rises to the highest position at the bottom of the cloth bag 11, the hair dryer 31 moves from top to bottom along the extension direction of the extension tube 32 and blows out airflow.

[0036] When the bottom of the cloth bag 11 is at the lowest position, the hair dryer 31 is located at the upper end of the extension tube 32. In this way, when the bottom of the cloth bag 11 rises to the highest position under the tension of the lifting rope 2, the hair dryer 31 located in the groove at the upper end of the extension tube 32 can move directly from top to bottom, thereby improving the cleaning efficiency. The hair dryer 31 moves from top to bottom along the extension direction of the extension tube 32, thereby ensuring that the flowing air generated by the hair dryer 31 can clean the dust attached to the cloth bag 11 from top to bottom when passing through the cloth bag 11. The advantage of such operation is that the dust can naturally settle under the action of its own weight, that is, when the airflow passes through the cloth bag 11, the dust attached to the cloth bag 11 will gradually fall. If the cloth bag 11 is cleaned from top to bottom, the dust can be prevented from flowing back and attaching to the cloth bag 11.

[0037] Reference Figure 7 and Figure 8 A driving unit 33 for driving the hair dryer 31 to move along the extension direction of the extension tube 32 is provided at the bottom of the hair dryer 31. The driving unit 33 includes a lifting frame 332. A slide groove 321 is provided on the side wall of the extension tube 32 along the extension direction of the extension tube 32. The lifting frame 332 is key-connected with the slide groove 321 of the extension tube 32 and slides with the extension tube 32 along the extension direction of the extension tube 32. A first gear ring 331 is rotatably provided on the upper part of the lift. The first gear ring 331 is sleeved on the outside of the extension tube 32. Threads are provided on the outer wall of the extension tube 32 and on the inner wall of the first gear ring 331. The extension tube 32 is threadedly matched with the first gear ring 331.

[0038] The first gear ring 331 is rotatably disposed on the lifting frame 332 , and the first gear ring 331 and the lifting frame 332 are synchronously lifted and lowered on the extension tube 32 along the extension direction of the extension tube 32 . The driving unit 33 also includes a first gear 333 and a first dual-axis motor 334. The first gear 333 is rotatably arranged on one side of the first gear ring 331. The first gear ring 331 and the first gear 333 are meshed with each other. The first dual-axis motor 334 is vertically arranged at the upper end of the first gear 333. The two output ends of the first dual-axis motor 334 are arranged in the vertical direction. The downward output end of the first dual-axis motor 334 is fixedly connected to the upper end of the first gear 333. The first dual-axis motor 334 is fixed on the lifting frame 332. When the first dual-axis motor 334 is started, the first gear 333 drives the first gear ring 331 to rotate. Since the first gear ring 331 is threadedly matched with the extension tube 32, and the lifting frame 332 is key-connected and slidably matched with the slide groove 321 on the extension tube 32, after the first gear ring 331 rotates, the first gear ring 331 can drive the lifting frame 332 to rise and fall along the extension tube 32.

[0039] Reference Figure 8 A second gear ring 335 is fixedly arranged at the bottom of the hair dryer 31 . The second gear ring 335 is sleeved on the extension tube 32 . The second gear ring 335 rotates synchronously with the first gear ring 331 .

[0040] A second gear 336 is rotatably provided on one side of the second gear ring 335, and the second gear 336 meshes with the second gear ring 335. The second gear 336 is fixedly provided on the upper output end of the first dual-axis motor 334. When the first dual-axis motor 334 is started, the first dual-axis motor 334 drives the first gear 333 and the second gear 336 to rotate simultaneously, so that the first gear ring 331 and the second gear ring 335 can rotate synchronously. It is worth noting that the second gear ring 335 and the extension tube 32 are slidably matched in the extension direction of the extension tube 32, and the second gear ring 335 can also rotate with the extension tube 32. By arranging the second gear ring 335 at the lower part of the hair dryer 31, the hair dryer 31 can rotate around the extension tube 32 when it descends, and the hair dryer 31 can clean the side wall of the cloth bag 11 more comprehensively during the rotation.

[0041] Reference Fig.10 and Fig.12 : An annular electromagnet 5 is fixedly arranged on the upper part of the first shell 1, and the cover plate 4 is vertically sleeved on the outer periphery of the lifting rope 2 and the cover plate 4 can slide with the lifting rope 2. When the bottom of the cloth bag 11 is at the lowest position, the cover plate 4 covers the electromagnet 5, and the electromagnet 5 is energized to adsorb the cover plate 4.

[0042] The cover plate 4 is provided with an introduction hole 41. When the bottom of the cloth bag 11 is at the lowest position, the cloth bag 11 is located in the first shell 1, the cover plate 4 is covered on the electromagnet 5, and the electromagnet 5 is in a powered state. The electromagnet 5 adsorbs the cover plate 4, and at this time, the introduction hole 41 provided on the cover plate 4 is in an open state. The cover plate 4 covered on the electromagnet 5 seals the upper part of the first shell 1, so that the first shell 1 forms a dust removal chamber. At this time, dust enters the dust removal chamber through the introduction hole 41, and the airflow flows out through the cloth bag 11, while the dust remains in the dust removal chamber. In the cloth bag 11, when the cloth bag 11 needs to be cleaned after a long period of use, the lifting rope 2 drives the bottom of the cloth to rise. When the connecting frame 21 between the lifting rope 2 and the bottom of the cloth bag 11 rises to the height of the connection between the cloth bag 11 and the first shell 1, the upper part of the connecting frame 21 contacts the bottom of the cover plate 4. At this time, the electromagnet 5 is powered off. As the lifting rope 2 continues to rise, the lifting rope 2 drives the cover plate 4 to rise through the connecting frame 21 and gradually moves away from the electromagnet 5. The cover plate 4 that leaves the electromagnet 5 no longer seals the first shell 1.

[0043] Reference Figure 7 A second shell 6 is fixedly provided on the upper portion of the first shell 1. The second shell 6 forms a cleaning chamber on the upper portion of the first shell 1. When the bottom of the cloth bag 11 is at the highest position, the cloth bag 11 is located in the cleaning chamber.

[0044] By setting the second shell 6, when the blowing unit 3 blows out the airflow, the dust attached to the bag 11 will not be scattered to the outside. A connecting port 61 is opened along the axis of the second shell 6 at the upper part of the second shell 6. Since the cover plate 4 is provided with an introduction hole 41, and a hose for guiding dust is provided at the upper part of the introduction hole 41, the diameter of the connecting port 61 needs to be larger than the diameter of the lifting rope 2. In this way, when the bottom of the bag 11 is at the lowest position, the cover plate 4 covers the electromagnet 5. At this time, the dust removal chamber formed by the first shell 1 is in a sealed state, and the second shell 4 is in a sealed state. The cleaning chamber formed by the shell 6 is in an open state, that is, the cleaning chamber is connected to the outside through the connecting port 61. When the cloth bag 11 needs to be cleaned, the electromagnet 5 is powered off, and the lifting rope 2 drives the bottom of the cloth bag 11 to rise. During the rising process, the bottom of the cloth bag 11 can lift the cover plate 4 covering the electromagnet 5 through the connecting frame 21. When the bottom of the cloth bag 11 rises to the highest position, the cover plate 4 seals the connecting port 61 on the upper part of the second shell 6. In this way, the cleaning chamber of the second shell 6 is in a completely sealed state, ensuring that dust will not overflow when the cloth bag 11 is cleaned.

[0045] Reference Figure 3 , Figure 6 , Figure 7 , Fig. 9 and Fig.10: The bottom of the second shell 6 is an annular structure, and a plurality of first through holes 62 are evenly and vertically penetrated at the bottom of the second shell 6 around the axis of the second shell 6. A dust collecting unit 7 is arranged at the bottom of the second shell 6, and the dust collecting unit 7 includes a dust collecting ring 71 rotatably arranged at the bottom of the second shell 6, and a dust collecting groove 711 is vertically arranged on the dust collecting ring 71. When the dust collecting ring 71 rotates, the dust collecting groove 711 can coincide with the first through hole 62. A bottom plate 72 is arranged at the lower part of the dust collecting ring 71. The bottom plate 72 is an annular structure, and a plurality of second through holes 721 are evenly arranged on the bottom plate 72 around the axis of the bottom plate 72. The second through holes 721 are staggered with the vertical projections of the first through holes 62.

[0046] The dust collecting unit 7 further includes a second dual-axis motor 73, a third gear ring 74 and a third gear 75. The third gear ring 74 is fixedly sleeved on the periphery of the dust collecting ring 71. The third gear 75 is rotatably arranged on one side of the third gear ring 74 and the third gear 75 is meshed with the third gear ring 74. The second dual-axis motor 73 is arranged at the end of the third gear 75. The second dual-axis motor 73 is used to drive the third gear 75 to rotate. As the dust collecting ring 71 rotates, when the dust collecting groove 711 on the dust collecting ring 71 coincides with the first through hole 62, dust enters through the first through hole 62. When the dust collecting groove 711 is filled with dust, the dust collecting groove 711 will be filled with dust and will not be easily leaked out. When the dust is collected, a breathable collection bag can be installed at the bottom of the second through hole 721 to collect the dust.

[0047] Reference Figure 4-Figure 6 : A scraper 76 that can rotate around the axis of the second shell 6 is provided at the bottom of the second shell 6. The scraper 76 is slidably matched with the bottom of the second shell 6, and the sweeping area formed when the scraper 76 rotates completely overlaps with the bottom of the second shell 6.

[0048] A fourth gear 77 is fixedly provided on the upper output end of the second dual-axis motor 73, and a fourth gear ring 78 is rotatably provided in the second housing 6. The fourth gear ring 78 is located on one side of the fourth gear 77 and the fourth gear 77 and the fourth gear ring 78 are meshed with each other. The scraper 76 is fixedly connected to the inner wall of the fourth gear ring 78. When the second dual-axis motor 73 is started, the fourth gear 77 can drive the fourth gear ring 78 to rotate, so that the scraper 76 can rotate around the axis of the second housing 6 at the bottom of the housing. When the scraper 76 rotates, the dust settled to the bottom of the second housing 6 is scraped into the dust collecting groove 711 through the first through hole 62. A sleeve 79 is also provided in the second outer shell 6, and a stop hole 791 is provided on the sleeve 79. The opening of the stop hole 791 at one end facing the cloth bag 11 is larger than the opening of the stop hole 791 at the end away from the cloth bag 11. By arranging the sleeve 79 in the second outer shell 6, the fluidity of the dust in the cleaning chamber is reduced, so that the dust can settle faster, thereby preventing the dust from adhering to the cloth bag 11 again.

[0049] Reference Figure 1-Figure 12 The present invention also relates to a blast furnace bag dust removal treatment method, which adopts a blast furnace bag dust removal equipment, and the specific steps are as follows: S1. When cleaning the cloth bag 11, the lifting rope 2 drives the bottom of the cloth bag 11 to rise along the height direction of the first shell 1, the bottom of the cloth bag 11 rises from the lowest position to the highest position, the cloth bag 11 is pulled out of the first shell 1 by the lifting rope 2, and the opening of the cloth bag 11 changes from vertically upward to vertically downward.

[0050] S2. When the bottom of the bag 11 rises, the blowing unit 3 rises synchronously with the bottom of the bag 11. When the bottom of the bag 11 reaches the highest position, the blowing unit 3 is started. The blowing unit 3 blows the flowing air from the inside of the bag 11 to the outside of the bag 11. The dust attached to the outside of the bag 11 is blown down by the flowing air, thereby completing the cleaning of the bag 11.

[0051] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A blast furnace bag dust removal device, comprising a first shell (1) and a bag (11) arranged in the first shell (1), wherein the bag (11) has an opening facing upward; It is characterized in that A lifting rope (2) is connected to the bottom of the cloth bag (11) located in the first shell (1). The lifting rope (2) can drive the bottom of the cloth bag (11) to rise and fall along the height direction of the first shell (1). The bottom of the cloth bag (11) has a highest position and a lowest position in its movement stroke. The highest position and the lowest position are symmetrically arranged about the connection between the cloth bag (11) and the first shell (1). When the bottom of the cloth bag (11) is located at the lowest position, the bottom of the cloth bag (11) is located below the connection between the cloth bag (11) and the first shell (1), the cloth bag (11) is located in the first shell (1) and the opening of the cloth bag (11) faces upward. When the bottom of the cloth bag (11) is located at the highest position, the bottom of the cloth bag (11) is located above the connection between the cloth bag (11) and the first shell (1), the cloth bag (11) is located above the first shell (1), and the opening of the cloth bag (11) faces downward.

2. A blast furnace bag dust removal equipment according to claim 1, characterized in that: A blowing unit (3) is provided below the bottom of the cloth bag (11) and moves synchronously with the bottom of the cloth bag (11) in a vertical direction. When the bottom of the cloth bag (11) reaches the highest position, the blowing unit (3) is started to blow flowing air from the inside of the cloth bag (11) to the outside of the cloth bag (11).

3. A blast furnace bag dust removal equipment according to claim 2, characterized in that: A feeding opening (111) is provided at the bottom of the cloth bag (11); an extension pipe (32) is arranged below the feeding opening (111) along an extension direction of the feeding opening (111); a blower (31) is sleeved on the outer periphery of the extension pipe (32); the blower (31) and the extension pipe (32) are slidably matched along the extension direction of the extension pipe (32); when the bottom of the cloth bag (11) rises to the highest position, the blower (31) moves from top to bottom along the extension direction of the extension pipe (32) and blows out airflow.

4. A blast furnace bag dust removal equipment according to claim 3, characterized in that: A driving unit (33) for driving the hair dryer (31) to move along the extension direction of the extension tube (32) is provided at the bottom of the hair dryer (31). The driving unit (33) comprises a lifting frame (332). A sliding groove (321) is provided on the side wall of the extension tube (32) along the extension direction of the extension tube (32). The lifting frame (332) is key-connected with the sliding groove (321) of the extension tube (32) and slides with the extension tube (32) along the extension direction of the extension tube (32). A first toothed ring (331) is rotatably provided on the upper part of the lifting frame. The first toothed ring (331) is sleeved on the outside of the extension tube (32). Threads are provided on the outer wall of the extension tube (32) and on the inner wall of the first toothed ring (331). The extension tube (32) and the first toothed ring (331) are threadedly engaged.

5. A blast furnace bag dust removal equipment according to claim 4, characterized in that: A second toothed ring (335) is fixedly arranged at the bottom of the hair dryer (31); the second toothed ring (335) is sleeved on the extension tube (32); the second toothed ring (335) rotates synchronously with the first toothed ring (331).

6. A blast furnace bag dust removal equipment according to claim 1, characterized in that: An annular electromagnet (5) is fixedly arranged on the upper part of the first housing (1); a cover plate (4) is sleeved on the outer periphery of the lifting rope (2) in a vertical direction and the cover plate (4) can slide with the lifting rope (2); when the bottom of the cloth bag (11) is at the lowest position, the cover plate (4) covers the electromagnet (5), and the electromagnet (5) is energized to absorb the cover plate (4).

7. A blast furnace bag dust removal equipment according to claim 1, characterized in that: A second housing (6) is provided on the upper fixed cover of the first housing (1), and the second housing (6) forms a cleaning chamber on the upper part of the first housing (1). When the bottom of the cloth bag (11) is at the highest position, the cloth bag (11) is located in the cleaning chamber.

8. A blast furnace bag dust removal device according to claim 7, characterized in that: The bottom of the second shell (6) is an annular structure. A plurality of first through holes (62) are evenly and vertically penetrated on the bottom of the second shell (6) around the axis of the second shell (6). A dust collecting unit (7) is arranged at the bottom of the second shell (6). The dust collecting unit (7) comprises a dust collecting ring (71) rotatably arranged at the bottom of the second shell (6). A dust collecting groove (711) is vertically arranged on the dust collecting ring (71). When the dust collecting ring (71) rotates, the dust collecting groove (711) can overlap with the first through hole (62). A bottom plate (72) is arranged at the bottom of the dust collecting ring (71). The bottom plate (72) is an annular structure. A plurality of second through holes (721) are evenly arranged on the bottom plate (72) around the axis of the bottom plate (72). The second through holes (721) and the vertical projections of the first through holes (62) are arranged in a staggered manner.

9. A blast furnace bag dust removal device according to claim 8, characterized in that: A scraper (76) is provided at the bottom of the second shell (6) and is rotatable around the axis of the second shell (6). The scraper (76) is slidably engaged with the bottom of the second shell (6), and a sweeping area formed when the scraper (76) rotates completely overlaps with the bottom of the second shell (6).

10. A blast furnace bag dust removal treatment method, using a blast furnace bag dust removal equipment according to any one of claims 2 to 9, characterized in that: The specific steps are as follows: S1. When cleaning the cloth bag (11), the lifting rope (2) drives the bottom of the cloth bag (11) to rise along the height direction of the first shell (1), the bottom of the cloth bag (11) rises from the lowest position to the highest position, the cloth bag (11) is pulled out of the first shell (1) by the lifting rope (2), and the opening of the cloth bag (11) changes from vertically upward to vertically downward; S2, the blowing unit (3) rises synchronously with the bottom of the cloth bag (11) when the bottom of the cloth bag (11) rises. When the bottom of the cloth bag (11) reaches the highest position, the blowing unit (3) is started. The blowing unit (3) blows flowing air from the inside of the cloth bag (11) to the outside of the cloth bag (11), and the dust attached to the outside of the cloth bag (11) is blown off by the flowing air, thereby completing the cleaning of the cloth bag (11).

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