A device for collecting coal powder for a coal injection system of a blast furnace

Abstract

The application discloses a device for collecting pulverized coal in a blast furnace coal injection system and relates to the technical field of the blast furnace coal injection system.The device comprises a collecting assembly and a collecting box.The outer surface of the collecting box is provided with a round opening, the outer surface of the collecting box is fixedly provided with a round block, the inner surface of the round block is fixedly connected with an annular plate, one end of the annular plate away from the round block is clamped in the round opening, one end of the round block away from the collecting box is fixedly connected with a collecting pipe, and the inside of the collecting box is provided with a rotating assembly.Through the collecting box, the motor is started, the cylindrical block starts to rotate in the collecting box under the influence of the rotating rod, the pulverized coal in the blast furnace coal injection system is sucked into the collecting box through the collecting pipe by air flow suction force generated during rotation, the annular plate can avoid the pulverized coal from being clamped in the gap between the round block and the collecting box, the collecting efficiency of the pulverized coal is improved, and the arc-shaped strips can avoid the pulverized coal from falling on the dead angle positions around the collecting box after entering the collecting box.

Description

Technical Field

[0001] This invention relates to the field of blast furnace pulverized coal injection, and more specifically to a device for collecting pulverized coal in a blast furnace pulverized coal injection system. Background Technology

[0002] Modern blast furnace smelting requires coke, which plays a role in providing the heat needed for the smelting process, the reducing agent needed to reduce iron ore, and the framework for maintaining the permeability of the blast furnace charge (especially the softening zone and below).

[0003] Currently, the devices used for collecting pulverized coal in blast furnace pulverized coal injection systems can only store the pulverized coal and cannot further filter and separate it. This results in the pulverized coal containing certain impurities, which can have a negative impact on the operation. Furthermore, when using the collection device, the pulverized coal stored inside tends to accumulate towards the center or sides, causing some space inside the storage box to become unusable and resulting in wasted space. Therefore, we propose a device for collecting pulverized coal in blast furnace pulverized coal injection systems. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a device for collecting pulverized coal in a blast furnace pulverized coal injection system, comprising:

[0005] Collect components;

[0006] A collection box has a circular opening on its outer surface. A circular block is fixedly installed on the outer surface of the collection box. An annular plate is fixedly connected to the inner surface of the circular block. The end of the annular plate away from the circular block is stuck inside the circular opening. A collection tube is fixedly connected to the end of the circular block away from the collection box. A rotating component is provided inside the collection box.

[0007] The motor has a positioning plate fixedly installed on the top of the collection box, and the motor is fixedly connected to the collection box through the positioning plate. A connecting rod is fixedly connected to the bottom output end of the motor, and the bottom of the connecting rod is fixedly connected to the top of the cylindrical block.

[0008] The rotating component, when the motor is started, begins to rotate via the connecting rod to collect pulverized coal.

[0009] The connecting assembly includes a connecting pipe fixed to the bottom of the collection box, and the connecting pipe is cross-shaped. A cover plate is provided directly below the connecting pipe, and a cross groove is opened on the top of the cover plate. The outer surface of the connecting pipe is fixedly connected to the inner wall of the cross groove.

[0010] The storage assembly includes a storage box that contacts the bottom of a cover plate, a moisture-proof box is provided inside the storage box, and a fixing frame is fixedly connected to the outer surface of the moisture-proof box. The end of the fixing frame away from the moisture-proof box is fixedly connected to the inner wall of the storage box, and an isolation plate is fixedly connected to the lower end of the inner surface of the moisture-proof box.

[0011] The moisture-proof box is used to guide and transport coal dust to the moisture-proof box for storage through a connecting pipe when the collection box starts collecting coal dust.

[0012] Furthermore, the top of the cover plate has a cross-shaped groove, and a support plate is fixedly connected to the top of the cover plate. The support plate is right-angled. The top of the support plate is fixedly connected to the bottom of the collection box. A square strip and a fixing block are fixedly connected to the bottom of the support plate. The fixing blocks are located on the left and right sides of the cover plate. A latch is provided on the side of the four fixing blocks that are close to each other, and the inner wall of the latch is fixedly connected to the outer surface of the cover plate. A square groove is provided at the lower end of the inside of the fixing block, and a protrusion is slidably connected inside the square groove. The end of the protrusion away from the cover plate passes through the square groove and extends to the outside. The bottom of the cover plate is in contact with the top of the storage box, and the outer surface of the square strip is in contact with the inner surface of the storage box.

[0013] Furthermore, an arc-shaped strip is provided on the outer side of the rotating component, and limit plates are provided at the upper and lower ends of the rotating component. An annular strip is fixedly connected to the side of the two limit plates that are close to each other. The upper and lower ends of the arc-shaped strip are fixedly connected to the limit plates, and the outer surface of the arc-shaped strip is fixedly connected to the inner surface of the collection box. A cross groove is provided at the top of the limit plate at the bottom, and a cross groove is provided at the bottom of the cylindrical block. The position of the cross groove is corresponding to the position of the cross groove.

[0014] Furthermore, the rotating assembly includes a cylindrical block with a hollow groove inside and a collection groove on its outer surface. The hollow groove and the collection groove are connected. The outer surface of the cylindrical block is in contact with the inner surface of the annular strip. A square rod is vertically fixedly connected to the central axis inside the hollow groove. A spring telescopic rod is fixedly connected to the outer surface of the square rod. An arc-shaped vertical plate is fixedly connected to the inner wall of the hollow groove. A filter plate is fixedly connected to one side of the four arc-shaped vertical plates that are close to each other. The filter plate is connected to the spring telescopic rod and the collection groove. Corresponding to the position, the filter plate has an opening at the end away from the square rod. A hollow stop bar is vertically contacted on the inner surface of the opening. A connecting block is fixedly connected to the inner surface of the hollow stop bar, and a round hole is opened at the top of the connecting block. A thin rod is fixedly connected to the inner surface of the round hole. The thin rod is connected to a spring telescopic rod through the connecting block. An arc-shaped collecting plate is fixedly connected to the outer surface of the cylindrical block. An inclined guide plate is fixedly connected to the side of the arc-shaped collecting plate near the cylindrical block. The arc-shaped collecting plate and the inclined guide plate are at the same height.

[0015] Furthermore, the upper end of the outer surface of the connecting pipe is fixedly connected to the inner wall of the cross groove, and the lower end of the outer surface of the connecting pipe is fixedly connected to the inner wall of the cross groove. A rotating rod is provided at the central axis inside the connecting pipe. A connecting block is fixedly connected to the top of the rotating rod, and a notch is provided at the top of the connecting block. A positioning block is sleeved on the outer surface of the rotating rod, and a fixing plate is fixedly connected to the outer surface of the positioning block. The positioning block is connected to the connecting pipe through the fixing plate. A conical block is fixedly connected to the bottom of the rotating rod, and a drainage groove is provided on the outer surface of the conical block. The inner wall of the notch is fixedly connected to the bottom of the square rod.

[0016] Furthermore, a second rotating rod is provided at the central axis of the inner side of the dehumidifying box. A connecting frame is fixedly connected to the outer surface of the second rotating rod. An arc-shaped strip is in contact with the bottom of the inner wall of the dehumidifying box, and the arc-shaped strip is fixedly connected to the second rotating rod through the connecting frame. A conical plate is fixedly connected to the top of the second rotating rod. A square plate is fixedly connected to the outer surface of the storage box. Square openings are provided on the left and right sides of the square plate. The inner wall of the square opening is in contact with the outer surface of the fixed block. The top of the protrusion is in contact with the bottom of the square plate. The top of the conical plate is in contact with the bottom of the conical block. The bottom of the second rotating rod is rotatably connected to the bottom of the inner wall of the dehumidifying box.

[0017] The beneficial effects of this invention

[0018] This invention uses a collection box and a motor to start the cylindrical block, which begins to rotate inside the collection box under the influence of a rotating rod. The airflow generated during the rotation attracts the pulverized coal in the blast furnace pulverized coal injection system through the collection pipe into the collection box. The annular plate prevents the pulverized coal from getting stuck in the gap between the cylindrical block and the collection box, thus improving the efficiency of pulverized coal collection.

[0019] This invention uses a rotating component to collect coal powder into the cylindrical block via an arc-shaped collecting plate. Under the influence of the inclined guide plate, the coal powder gradually moves into the cylindrical block. The inclined guide plate, with its special shape and tilt angle, can suppress the problem of coal powder flowing from the inside of the cylindrical block to the outside. The spring telescopic rod expands outward due to centrifugal force, and the connecting block pushes the hollow baffle outward due to its thrust. At this time, the coal powder can pass through the gap between the hollow baffle and the filter plate, and then enter the hollow trough after being filtered by the filter plate.

[0020] The hollow stop bar serves two purposes: firstly, its hollow design reduces its weight, making it easier for the spring telescopic rod to be pushed using centrifugal force; secondly, it closes the hollow groove when the cylindrical block is not rotating, preventing foreign objects from entering the hollow groove when not in use. The thin rod allows the connecting blocks located in various positions to be integrated, increasing stability while ensuring the uniformity of the spring telescopic rod's movement.

[0021] This invention uses an arc-shaped strip to prevent coal dust from falling into the corners of the collection box after entering it. It also fixes the limiting plate. Through the limiting plate and the ring strip, the position of the cylindrical block is limited, and the stability of the cylindrical block during rotation is greatly increased.

[0022] This invention uses a connecting assembly to guide coal powder entering the hollow trough into the storage box via a connecting pipe. The square rod transmits the rotational force to the rotating rod one through a connecting block. At the same time, the rotating rod one rotates, and the conical block also begins to rotate. When the coal powder falls onto the rotating conical block, it is thrown outwards and then falls into the moisture-proof box for storage. The moisture-proof box prevents the coal powder collected inside from being affected by moisture. Furthermore, the space between the moisture-proof box and the storage box further reduces the impact of moisture on the coal powder.

[0023] This invention utilizes a storage component where the top of the conical plate and the bottom of the conical block are in contact. The conical block then transmits some rotational force to the conical plate, causing the conical plate to slowly rotate the rotating rod and connecting frame. Simultaneously, the arc-shaped strip rotates, causing the coal dust that has accumulated in one place to collapse due to the rotation of the bottom arc-shaped strip. This prevents the coal dust from continuously accumulating to one side during storage, ensuring that the coal dust is evenly stored inside the moisture-proof box. The isolation plate also effectively reduces the impact of moisture on the coal dust. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of the components collected in this invention;

[0026] Figure 3 This is an exploded schematic diagram of the collection box of the present invention;

[0027] Figure 4 This is an exploded view of the rotating assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the rotating assembly of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the connecting component of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the storage component of the present invention.

[0031] 1. Collection component; 11. Collection box; 111. Annular plate; 112. Round block; 113. Collection pipe; 114. Rotating component; 51. Square rod; 52. Spring telescopic rod; 53. Arc-shaped vertical plate; 54. Filter plate; 55. Hollow stop bar; 56. Connecting block; 57. Thin rod; 58. Arc-shaped collection plate; 59. Inclined diversion plate; 41. Arc-shaped strip; 43. Limiting plate; 44. Annular strip; 12. Motor; 13. Positioning plate; 1 4. Connecting components; 141. Connecting pipe; 142. Rotating rod one; 143. Connecting block; 144. Fixing plate; 145. Conical block; 15. Support plate; 16. Cover plate; 17. Square strip; 18. Fixing block; 19. Protrusion; 2. Storage components; 21. Storage box; 22. Moisture-proof box; 24. Isolation plate; 25. Fixing frame; 26. Rotating rod two; 27. Connecting frame; 28. Arc-shaped strip; 29. ​​Conical plate; 30. Square plate. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0033] Example 1

[0034] Please see Figures 1-5 The present invention is a device for collecting pulverized coal in a blast furnace pulverized coal injection system, comprising:

[0035] Collect component 1;

[0036] Collection box 11, with a round opening on the outer surface of collection box 11, a round block 112 fixedly installed on the outer surface of collection box 11, a collection tube 113 fixedly connected to the end of round block 112 away from collection box 11, and a rotating component 114 provided inside collection box 11.

[0037] A positioning plate 13 is fixedly installed on the top of the motor 12 and the collection box 11. The motor 12 is fixedly connected to the collection box 11 through the positioning plate 13. A connecting rod is fixedly connected to the bottom output end of the motor 12.

[0038] When the motor 12 is started, the rotating component 114 starts to rotate via the connecting rod to collect coal powder;

[0039] The connecting component 14 includes a connecting pipe 141 fixed to the bottom of the collection box 11. The connecting pipe 141 is cross-shaped. A cover plate 16 is provided directly below the connecting pipe 141. A cross groove is provided on the top of the cover plate 16. The outer surface of the connecting pipe 141 is fixedly connected to the inner wall of the cross groove.

[0040] The storage component 2 includes a storage box 21 that contacts the bottom of the cover plate 16. A moisture-proof box 22 is provided inside the storage box 21, and a fixing frame 25 is fixedly connected to the outer surface of the moisture-proof box 22. One end of the fixing frame 25 away from the moisture-proof box 22 is fixedly connected to the inner wall of the storage box 21. An isolation plate 24 is fixedly connected to the lower end of the inner surface of the moisture-proof box 22.

[0041] When the collection box 11 starts collecting coal dust, the coal dust is guided and transported to the moisture-proof box 22 for storage through the connecting pipe 141.

[0042] The top of the cover plate 16 has a cross groove 3. The top of the cover plate 16 is fixedly connected to a support plate 15, and the support plate 15 is right-angled. The top of the support plate 15 is fixedly connected to the bottom of the collection box 11, and the bottom of the support plate 15 is fixedly connected to a square strip 17.

[0043] Fixing blocks 18 are provided on the left and right sides of the cover plate 16. The four fixing blocks 18 are provided with a slot on the side that is close to each other, and the inner wall of the slot is fixedly connected to the outer surface of the cover plate 16. A square groove is provided at the lower end of the inside of the fixing block 18, and a protrusion 19 is slidably connected inside the square groove. The end of the protrusion 19 away from the cover plate 16 passes through the square groove and extends to the outside.

[0044] An annular plate 111 is fixedly connected to the inner surface of the circular block 112, and the end of the annular plate 111 away from the circular block 112 is stuck inside the circular opening.

[0045] An arc-shaped strip 41 is provided on the outer side of the rotating component 114, and a limit plate 43 is provided at the upper and lower ends of the rotating component 114. An annular strip 44 is fixedly connected to the side of the two limit plates 43 that are close to each other.

[0046] The upper and lower ends of the arc-shaped strip 41 are fixedly connected to the limiting plate 43, and the outer surface of the arc-shaped strip 41 is fixedly connected to the inner surface of the collection box 11.

[0047] The rotating assembly 114 includes a cylindrical block with a hollow groove inside and a collection groove on the outer surface of the cylindrical block. The hollow groove and the collection groove are connected. A square rod 51 is vertically fixedly connected to the central axis inside the hollow groove. A spring telescopic rod 52 is fixedly connected to the outer surface of the square rod 51. An arc-shaped vertical plate 53 is fixedly connected to the inner wall of the hollow groove. A filter plate 54 is fixedly connected to one side of the four arc-shaped vertical plates 53 that are close to each other. The filter plate 54 corresponds to the position of the spring telescopic rod 52 and the collection groove. An opening is opened at the end of the filter plate 54 away from the square rod 51. A hollow stop rod 55 is vertically contacted on the inner surface of the opening. A connecting block 56 is fixedly connected to the inner surface of the hollow stop rod 55. A round hole is opened at the top of the connecting block 56. A thin rod 57 is fixedly connected to the inner surface of the round hole.

[0048] The thin rod 57 is connected to the spring telescopic rod 52 through the connecting block 56. An arc-shaped collecting plate 58 is fixedly connected to the outer surface of the cylindrical block. An inclined diversion plate 59 is fixedly connected to the side of the arc-shaped collecting plate 58 near the cylindrical block.

[0049] The arc-shaped collecting plate 58 and the inclined diversion plate 59 are at the same height. The outer surface of the cylindrical block is in contact with the inner surface of the annular strip 44. The bottom of the connecting rod is fixedly connected to the top of the cylindrical block.

[0050] The bottom limiting plate 43 has a cross groove 1 on its top and a cross groove 2 on its bottom. The positions of the cross groove 1 and the cross groove 2 are corresponding.

[0051] Example 2

[0052] Distinguishing features from Example 1;

[0053] Please see Figures 6-7 The present invention is a device for collecting pulverized coal in a blast furnace pulverized coal injection system, comprising:

[0054] The upper end of the outer surface of the connecting pipe 141 is fixedly connected to the inner wall of the cross groove 1, and the lower end of the outer surface of the connecting pipe 141 is fixedly connected to the inner wall of the cross groove 3. A rotating rod 142 is provided at the central axis inside the connecting pipe 141. A connecting block 143 is fixedly connected to the top of the rotating rod 142, and a notch is opened at the top of the connecting block 143. A positioning block is sleeved on the outer surface of the rotating rod 142. A fixing plate 144 is fixedly connected to the outer surface of the positioning block, and the positioning block is connected to the connecting pipe 141 through the fixing plate 144. A conical block 145 is fixedly connected to the bottom of the rotating rod 142.

[0055] A drainage groove is provided on the outer surface of the conical block 145, and the inner wall of the recess is fixedly connected to the bottom of the square rod 51.

[0056] A rotating rod 26 is provided at the central axis of the inner side of the moisture-proof box 22. A connecting frame 27 is fixedly connected to the outer surface of the rotating rod 26. An arc-shaped strip 28 is in contact with the bottom of the inner wall of the moisture-proof box 22, and the arc-shaped strip 28 is fixedly connected to the rotating rod 26 through the connecting frame 27. A conical plate 29 is fixedly connected to the top of the rotating rod 26. A square plate 30 is fixedly connected to the outer surface of the storage box 21.

[0057] The top of the conical plate 29 is in contact with the bottom of the conical block 145, and the bottom of the rotating rod 26 is rotatably connected to the bottom of the inner wall of the moisture-proof box 22.

[0058] Square openings are provided on the left and right sides of the square plate 30. The inner wall of the square opening is in contact with the outer surface of the fixing block 18, and the top of the protrusion 19 is in contact with the bottom of the square plate 30.

[0059] The bottom of the cover plate 16 is in contact with the top of the storage box 21, and the outer surface of the square strip 17 is in contact with the inner surface of the storage box 21.

[0060] A specific application of this embodiment is as follows: the worker connects the collection pipe 113 to the blast furnace pulverized coal injection system, starts the motor 12, and the cylindrical block begins to rotate inside the collection box 11 under the influence of the rotating rod. The airflow generated during the rotation attracts the pulverized coal in the blast furnace pulverized coal injection system through the collection pipe 113 to the collection box 11.

[0061] The cylindrical block collects coal powder into its interior through the arc-shaped collecting plate 58. Under the influence of the inclined guide plate 59, the coal powder gradually moves into the interior of the cylindrical block. Through the inclined guide plate 59, relying on its special shape and tilt angle, the problem of coal powder flowing from the interior of the cylindrical block to the exterior can be suppressed. The spring telescopic rod 52 will expand outward under the influence of centrifugal force, and the connecting block 56 will push the hollow baffle 55 outward under its thrust. At this time, the coal powder can pass through the gap between the hollow baffle 55 and the filter plate 54, and then enter the hollow trough after being filtered by the filter plate 54.

[0062] The coal dust entering the hollow trough will fall downwards and be guided by the connecting pipe 141 into the storage box 21. The square rod 51 will transmit the rotational force to the rotating rod 142 through the connecting block 143. At this time, the rotating rod 142 rotates and the conical block 145 also starts to rotate. When the coal dust falls on the rotating conical block 145, it will be thrown to all sides and then fall into the moisture-proof box 22 to achieve the storage effect.

[0063] Since the top of the conical plate 29 is in contact with the bottom of the conical block 145, the conical block 145 will transmit some rotational force to the conical plate 29. The conical plate 29 will drive the rotating rod 26 and the connecting frame 27 to rotate slowly. The arc-shaped strip 28 will rotate synchronously. The coal powder that is pushed in one place will collapse due to the rotation of the bottom arc-shaped strip 28, thereby avoiding the situation that the coal powder will continue to be pushed to one side during storage, so that the coal powder can be evenly stored inside the moisture-proof box 22.

[0064] When the staff needs to use the coal powder stored inside the storage box 21, they push the protrusion 19, which is in the extended state, back into the square groove. Then, the fixing block 18, which is no longer restricted by the protrusion 19, can be pulled out from the top of the square plate 30. At this time, the collecting component 1 is separated from the storage component 2.

[0065] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A device for collecting coal fines for a coal injection system of a blast furnace, characterized by, Include: Collecting assembly (1); Collecting box (11), the outer surface of the collecting box (11) is provided with a round opening, the outer surface of the collecting box (11) is fixedly installed with a round block (112), one end of the round block (112) away from the collecting box (11) is fixedly connected with a collecting pipe (113), and the inside of the collecting box (11) is provided with a rotating assembly (114); Motor (12), the top of the collecting box (11) is fixedly installed with a positioning plate (13), the motor (12) is fixedly connected with the collecting box (11) through the positioning plate (13), and the bottom output end of the motor (12) is fixedly connected with a connecting rod; The rotating assembly (114) starts to rotate to collect the coal powder through the connecting rod when the motor (12) is started; The connecting assembly (14) includes a connecting pipe (141) fixed at the bottom of the collecting box (11), and the connecting pipe (141) is in the shape of a cross, a cover plate (16) is arranged below the connecting pipe (141), and a cross slot is formed in the top of the cover plate (16), and the outer surface of the connecting pipe (141) is fixedly connected with the inner wall of the cross slot; The storage assembly (2) includes a storage box (21) in contact with the bottom of the cover plate (16), the inside of the storage box (21) is provided with a moisture-proof box (22), and the outer surface of the moisture-proof box (22) is fixedly connected with a fixing frame (25), one end of the fixing frame (25) away from the moisture-proof box (22) is fixedly connected with the inner wall of the storage box (21), and the inner surface of the moisture-proof box (22) is fixedly connected with a partition plate (24) at the lower end; The moisture-proof box (22) guides and conveys the coal powder into the moisture-proof box (22) for storage through the connecting pipe (141) when the collecting box (11) starts to collect the coal powder; The rotating assembly (114) includes a cylindrical block, a hollow groove is formed in the inside of the cylindrical block, a collecting groove is formed in the outer surface of the cylindrical block, the hollow groove and the collecting groove are communicated, a square rod (51) is fixedly connected vertically at the central axis in the inside of the hollow groove, a spring telescopic rod (52) is fixedly connected with the outer surface of the square rod (51), arc-shaped vertical plates (53) are fixedly connected with the inner wall of the hollow groove, four filter plates (54) are fixedly connected with one side of the arc-shaped vertical plates (53) close to each other, the positions of the filter plates (54), the spring telescopic rod (52) and the collecting groove correspond to each other, an opening is formed in one end of the filter plate (54) away from the square rod (51), a hollow stop rod (55) is vertically contacted with the inner surface of the opening, a connecting block (56) is fixedly connected with the inner surface of the hollow stop rod (55), a circular hole is formed in the top of the connecting block (56), and a thin rod (57) is fixedly connected with the inner surface of the circular hole; The thin rod (57) is connected with the spring telescopic rod (52) through the connecting block (56), and the outer surface of the cylindrical block is fixedly connected with an arc-shaped collecting plate (58), and the side of the arc-shaped collecting plate (58) close to the cylindrical block is fixedly connected with an inclined drainage plate (59).

2. A device for collecting coal fines for a coal injection system of a blast furnace according to claim 1, characterized in that: The top of the cover plate (16) is provided with a cross groove three, the top of the cover plate (16) is fixedly connected with a supporting plate (15), and the supporting plate (15) is shaped as a right angle, the top of the supporting plate (15) is fixedly connected with the bottom of the collecting box (11), and the bottom of the supporting plate (15) is fixedly connected with a square strip (17); The fixing block (18) is arranged on the left and right sides of the cover plate (16), the side, close to each other, of the four fixing blocks (18) is provided with a bayonet, and the inner wall of the bayonet is fixedly connected with the outer surface of the cover plate (16); the inside of the lower end of the fixing block (18) is provided with a square groove, and the inside of the square groove is slidably connected with a protruding block (19), and the end, away from the cover plate (16), of the protruding block (19) penetrates through the square groove and extends to the outside; The inner surface of the circular block (112) is fixedly connected with an annular plate (111), and the end, away from the circular block (112), of the annular plate (111) is clamped in the circular hole.

3. A device for collecting coal fines for a coal injection system of a blast furnace according to claim 2, characterized in that: The outer side of the rotating assembly (114) is provided with an arc-shaped strip (41), and the upper and lower ends of the rotating assembly (114) are provided with limiting plates (43), and the side, close to each other, of the two limiting plates (43) is fixedly connected with an annular strip (44); The upper and lower ends of the arc-shaped strip (41) are fixedly connected with the limiting plates (43), and the outer surface of the arc-shaped strip (41) is fixedly connected with the inner surface of the collecting box (11).

4. A device for collecting coal fines for a coal injection system of a blast furnace according to claim 1, characterized in that: The arc-shaped collecting plate (58) and the inclined drainage plate (59) are the same in height, the outer surface of the cylindrical block is in contact with the inner surface of the annular strip (44), and the bottom of the connecting rod is fixedly connected with the top of the cylindrical block. The top of the limiting plate (43) at the bottom is provided with a cross groove one, and the bottom of the cylindrical block is provided with a cross groove two, and the positions of the cross groove one and the cross groove two are corresponding.

5. A device for collecting coal fines for a coal injection system of a blast furnace according to claim 1, characterized in that: The outer surface of the connecting pipe (141) is fixedly connected with the inner wall of the cross groove one, the outer surface of the connecting pipe (141) is fixedly connected with the inner wall of the cross groove three, the inside of the connecting pipe (141) is provided with a rotating rod one (142) at the middle shaft, the top of the rotating rod one (142) is fixedly connected with a joint block (143), the top of the joint block (143) is provided with a notch, the outer surface of the rotating rod one (142) is sleeved with a positioning block, the outer surface of the positioning block is fixedly connected with a fixing plate (144), the positioning block is connected with the connecting pipe (141) through the fixing plate (144), and the bottom of the rotating rod one (142) is fixedly connected with a conical block (145); The outer surface of the conical block (145) is provided with a drainage groove, and the inner wall of the notch is fixedly connected with the bottom of the square rod (51).

6. A device for collecting coal fines for a coal injection system of a blast furnace according to claim 2, characterized in that: The inside of the moisture-proof box (22) is provided with a rotating rod two (26) at the middle shaft, the outer surface of the rotating rod two (26) is fixedly connected with a connecting frame (27), the inner wall of the moisture-proof box (22) is in contact with an arc-shaped long strip (28) at the bottom, the arc-shaped long strip (28) is fixedly connected with the rotating rod two (26) through the connecting frame (27), the top of the rotating rod two (26) is fixedly connected with a conical plate (29), and the outer surface of the storage box (21) is fixedly connected with a square plate (30). The top of the conical plate (29) is in contact with the bottom of the conical block (145), and the bottom of the rotating shaft two (26) is rotatably connected with the inner wall bottom of the moisture-proof box (22).

7. A device for collecting coal fines for a coal injection system of a blast furnace according to claim 6, characterized in that: The left and right sides of the square plate (30) are provided with square openings, the inner wall of the square opening is in contact with the outer surface of the fixed block (18), and the top of the convex block (19) is in contact with the bottom of the square plate (30). The bottom of the cover plate (16) is in contact with the top of the storage box (21), and the outer surface of the square strip (17) is in contact with the inner surface of the storage box (21).

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