A material charging device for a steelmaking furnace

Abstract

The utility model relates to the technical field of steelmaking, and disclose a kind of push material into furnace equipment for steelmaking, including support frame, support frame upper end is provided with bucket, support frame side wall is provided with push structure, there is cleaning structure in bucket inside to scrape its inner wall surface, user can start electric push rod to work, by electric push rod output shaft movement drive its lower end connecting plate along bucket axis direction up and down reciprocating movement, this connecting plate movement drive both sides sleeve synchronous movement, when scraper moves, the extrusion block of its side wall will be contacted with the pressure block arc in sliding groove, output pressure block generates lateral pressure to extrusion block, to move scraper to the sleeve interior, moving plate compression extrusion spring when this time, when extrusion block is separated from pressure block when scraper continues to move, extrusion spring is elastically reset to push moving plate and scraper reverse movement, to realize the shaking self-cleaning of scraper, shake off the auxiliary material adhered on surface.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking technology, specifically to a pusher charging device for steelmaking. Background Technology

[0002] The converter is one of the main pieces of equipment in steelmaking. In addition to molten iron and scrap steel, the raw materials for converter steelmaking include active lime, fluorite, limestone, magnesite, dolomite, sintered ore, and ash pellets from the primary dust collector of the converter. Traditionally, the auxiliary materials are introduced into the side wall of the vertical vaporization flue at the top of the converter. All kinds of auxiliary materials fall into the converter under the action of gravity after passing through the integrated silo, feeder, discharge chute and vaporization flue.

[0003] For example, CN222434515U discloses a steelmaking pusher furnace feeding device. This device uses a cylinder to push a connecting plate, which in turn pulls a push rod, causing the push plate to slide backward in the material trough until it completely loses its seal on the material bucket. The auxiliary material in the material bucket will fall into the material trough. Then, the cylinder is activated in the reverse direction, and the push rod pushes the push plate. The push plate pushes the auxiliary material in the material trough out from the other side of the material trough, thus completing the quantitative feeding.

[0004] However, during the feeding process, some auxiliary materials, especially active lime, are highly hygroscopic. When exposed to moisture in the air, they easily form highly viscous calcium hydroxide, which creates a wet, sticky layer on the inner wall of the hopper. At the same time, fine powder and residual binders on the surface of auxiliary materials such as dust collector pellets also tend to adhere to the hopper wall. These adhered auxiliary materials accumulate and clump together, causing poor feeding. This not only affects the accuracy of auxiliary material feeding but also reduces feeding efficiency, thereby affecting the stability of the steelmaking process and the quality of the steel. In view of this, we propose a feeding device for steelmaking furnaces. Utility Model Content

[0005] The purpose of this invention is to provide a pusher charging device for steelmaking to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steelmaking pusher furnace feeding device, including a support frame, a material bucket at the upper end of the support frame, a pushing structure on the side wall of the support frame, and a cleaning structure for scraping the inner wall surface of the material bucket. The cleaning structure includes a detachable lid installed on the upper end of the material bucket. An electric push rod is fixedly installed on the upper end of the lid. The output shaft of the electric push rod passes through the lower end of the lid and is fixedly installed with a connecting plate. Sleeves are fixedly installed on both sides of the connecting plate. Scrapers are provided on the side walls of the sleeves. A feed port is opened on the surface of the lid.

[0007] Preferably, the cleaning structure further includes a fixed plate fixedly installed on the inner wall of the sleeve. One end of a compression spring is fixedly installed on the side wall of the fixed plate, and a movable plate is fixedly installed on the other end of the compression spring. The side wall of the movable plate is fixedly connected to the side wall of the scraper. Slide grooves are provided on both sides of the inner wall of the material barrel. A pressure block is fixedly installed on the inner wall of the slide groove, and a compression block is fixedly installed on the side wall of the scraper.

[0008] Preferably, both the pressure block and the extrusion block are configured with an arc-shaped structure and their positions are adapted to each other.

[0009] Preferably, the compression springs are provided in multiple sets, and the multiple sets of compression springs are fixedly installed on the side wall of the fixed plate in a linear array.

[0010] Preferably, the feed inlet has multiple sets on the surface of the barrel lid, and the scraper is in contact with the inner wall of the barrel.

[0011] Preferably, the sleeve is provided with an air blowing structure, which includes an air bladder fixedly installed on the inner wall of the sleeve. The surface of the air bladder is connected to one end of a plurality of air pipes. The other end of the air pipes passes through a movable plate and is slidably connected to it. One end of a plurality of T-shaped extrusion plates is fixedly installed on the side wall of the movable plate. The other end of the T-shaped extrusion plates passes through the side wall of the fixed plate and is in contact with the side wall of the air bladder.

[0012] Preferably, both ends of the airbag are connected to one end of an air intake pipe, the other end of the air intake pipe penetrates the side wall of the sleeve, and a one-way valve is provided on the surface of the air intake pipe.

[0013] Compared with the prior art, this utility model provides a steelmaking pusher charging device for furnaces, which has the following beneficial effects: 1. This steelmaking charging equipment incorporates a cleaning structure to facilitate scraping and cleaning of the inner wall of the charging bucket. Raw materials are fed into the bucket through the inlet, and the charging structure pushes the material forward. At this time, the electric push rod is activated to move the connecting plate and sleeve. The movement of the sleeve moves the scraper on its side wall to clean the inner wall of the charging bucket. Furthermore, the scraper can self-clean by shaking during its movement, thereby improving the overall charging effect of the device and preventing the material from sticking to the inner wall of the charging bucket, which would affect the steelmaking effect.

[0014] 2. The steelmaking pusher charging equipment is equipped with an air blowing structure to blow away and clean up some accumulated materials on the scraper surface, causing them to fall. When the extrusion block on the side wall of the scraper comes into contact with the pressure block, it will move into the sleeve. At this time, the T-shaped extrusion plate will squeeze the air jet bag, so that the gas inside the air jet bag will be ejected from the pipe heads of multiple sets of air jet pipes to blow away and clean up some accumulated materials on the scraper surface. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the material bucket of this utility model; Figure 3 This is a partial cross-sectional view of the slide groove of this utility model; Figure 4 This is a schematic diagram of the internal cross-sectional structure of the sleeve of this utility model.

[0016] In the diagram: 1. Support frame; 2. Material bucket; 3. Cleaning structure; 4. Air blowing structure; 5. Pushing structure; 31. Bucket lid; 32. Electric push rod; 33. Connecting plate; 34. Sleeve; 35. Scraper; 36. Feed inlet; 37. Fixed plate; 38. Compression spring; 39. Moving plate; 311. Slide groove; 312. Pressure block; 313. Extrusion block; 41. Airbag; 42. Air pipe; 43. T-shaped extrusion plate; 44. Air inlet pipe. Detailed Implementation

[0017] like Figures 1-4 As shown, this utility model provides a technical solution: a steelmaking pusher furnace feeding device, including a support frame 1, a material bucket 2 is provided at the upper end of the support frame 1, a pusher structure 5 is provided on the side wall of the support frame 1, and a cleaning structure 3 is provided inside the material bucket 2 to scrape off its inner wall surface; The cleaning structure 3 includes a detachable lid 31 mounted on the upper end of the material hopper 2. An electric push rod 32 is fixedly mounted on the upper end of the lid 31. The output shaft of the electric push rod 32 passes through the lower end of the lid 31 and is fixedly mounted on a connecting plate 33. Sleeves 34 are fixedly mounted on both sides of the connecting plate 33. Scrapers 35 are provided on the side walls of the sleeves 34. A feed inlet 36 is opened on the surface of the lid 31. The cleaning structure 3 also includes a fixing plate 37 fixedly mounted on the inner wall of the sleeves 34. One end of a compression spring 38 is fixedly mounted on the side wall of the fixing plate 37, and the other end of the compression spring 38 is fixedly mounted on... There is a movable plate 39, the side wall of the movable plate 39 is fixedly connected to the side wall of the scraper 35, and the inner wall of the material barrel 2 is provided with a sliding groove 311 on both sides. The inner wall of the sliding groove 311 is fixedly installed with a pressure block 312, and the side wall of the scraper 35 is fixedly installed with a squeezing block 313. The pressure block 312 and the squeezing block 313 are both set with an arc-shaped structure and their positions are adapted to each other. Multiple sets of squeezing springs 38 are provided, and the multiple sets of squeezing springs 38 are fixedly installed on the side wall of the fixed plate 37 in a linear array. Multiple sets of feed inlets 36 are opened on the surface of the barrel cover 31, and the scraper 35 is in contact with the inner wall of the material barrel 2.

[0018] In one embodiment of this utility model, during steelmaking feeding, the user can feed auxiliary materials such as active lime, fluorite, and dust removal ash pellets into the material bucket 2 through multiple feed inlets 36 on the surface of the bucket cover 31. At this time, the auxiliary materials accumulate at the bottom of the material bucket 2 under the action of gravity, waiting to be pushed. Then, the user can transport the material bucket 2 through the moving structure in the original application, and then the material bucket 2 can be unloaded through the pushing structure 5 in the original application. This application only improves the use of the material bucket 2 itself. During the unloading process of the material bucket 2, the user can start the electric push rod 32 to work. The output shaft of the electric push rod 32 moves and drives the connecting plate 33 at its lower end to move up and down along the axis of the material bucket 2. The movement of this connecting plate 33 drives the sleeves 34 on both sides to move synchronously. The scraper 35 on the side wall of the sleeve 34 makes close contact with the inner wall of the barrel 2 to scrape off the adhering auxiliary materials on the barrel wall. When the scraper 35 is cleaning, the moving trajectory of the scraper 35 is matched with the length of the chute 311. When the scraper 35 moves, the squeezing block 313 on its side wall will make arc-shaped contact with the pressure block 312 in the chute 311. The pressure block 312 outputs lateral pressure on the squeezing block 313, thereby pushing the scraper 35 to move into the sleeve 34. At this time, the moving plate 39 compresses the squeezing spring 38. When the scraper 35 continues to move, when the squeezing block 313 disengages from the pressure block 312, the squeezing spring 38 elastically resets, thereby pushing the moving plate 39 and the scraper 35 to move in opposite directions, thereby realizing the self-cleaning of the scraper 35 by shaking off the auxiliary materials adhering to the surface.

[0019] Please continue reading. Figures 1-4 The sleeve 34 is equipped with an air blowing structure 4. The air blowing structure 4 includes an air bladder 41 fixedly installed on the inner wall of the sleeve 34. The surface of the air bladder 41 is connected to one end of a plurality of air pipes 42. The other end of the air pipes 42 passes through the movable plate 39 and is slidably connected to it. The side wall of the movable plate 39 is fixedly installed with one end of a plurality of T-shaped extrusion plates 43. The other end of the T-shaped extrusion plates 43 passes through the side wall of the fixed plate 37 and is in contact with the side wall of the air bladder 41. Both ends of the air bladder 41 are connected to one end of an air inlet pipe 44. The other end of the air inlet pipe 44 passes through the side wall of the sleeve 34. The surface of the air inlet pipe 44 is equipped with a one-way valve.

[0020] In this embodiment of the invention, when the scraper 35 moves into the sleeve 34, the T-shaped extrusion plate 43 on its side wall moves synchronously via the moving plate 39. The T-shaped extrusion plate 43 extrudes the airbag 41, and the gas inside the airbag 41 is ejected through multiple sets of air pipes 42. The airflow directly blows off the surface of the scraper 35, removing residual fine powder and small clumps of auxiliary materials, ensuring that the scraper 35 is clean. After the air is ejected, a negative pressure is formed inside the airbag 41, and outside air is automatically replenished into the airbag through the air inlet pipe 44 and the one-way valve, preparing for the next air blowing, further improving the effectiveness of the device.

[0021] During operation, when feeding materials into the steelmaking process, the user feeds auxiliary materials such as quicklime, fluorite, and dust removal ash pellets into the material bin 2 through multiple feed ports 36 on the surface of the bin cover 31. The material bin 2 is transported and unloaded through the moving structure and pushing structure 5 described in the original application. During the unloading process, the user activates the electric push rod 32 to move its output shaft, which in turn moves the connecting plate 33. At this time, the movement of the connecting plate 33 simultaneously moves the scraper 35 to scrape off the auxiliary materials adhering to the bin wall. During the movement, the squeezing block 313 on the side wall of the scraper 35 will make arc-shaped contact with the pressure block 312 in the chute 311. As the scraper 35 continues to move, the squeezing block 313 is disengaged from the pressure block 312. At 12 o'clock, the compression spring 38 elastically resets, pushing the moving plate 39 and scraper 35 to move in opposite directions, realizing the self-cleaning of scraper 35 by shaking. At the same time, when scraper 35 moves into sleeve 34, moving plate 39 drives the T-shaped extrusion plate 43 on its side wall to move synchronously. T-shaped extrusion plate 43 extrudes air bladder 41, and the gas in air bladder 41 is ejected through multiple sets of air pipes 42. The airflow directly blows the surface of scraper 35. After the air is ejected, a negative pressure is formed inside air bladder 41. Outside air is automatically replenished into air bladder through air inlet pipe 44 and one-way air valve, so that material bucket 2 can be discharged more smoothly, further improving the use effect of the device.

[0022] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A steelmaking furnace feeding device, comprising a support frame (1), wherein a material bucket (2) is provided at the upper end of the support frame (1), and a pushing structure (5) is provided on the side wall of the support frame (1), characterized in that: The material barrel (2) has a cleaning structure (3) inside for scraping the inner wall surface; The cleaning structure (3) includes a detachable bucket cover (31) installed on the upper end of the bucket (2). An electric push rod (32) is fixedly installed on the upper end of the bucket cover (31). The output shaft of the electric push rod (32) passes through the lower end of the bucket cover (31) and is fixedly installed with a connecting plate (33). Sleeves (34) are fixedly installed on both sides of the connecting plate (33). A scraper (35) is provided on the side wall of the sleeve (34). A feed inlet (36) is opened on the surface of the bucket cover (31).

2. The steelmaking charging device according to claim 1, characterized in that: The cleaning structure (3) also includes a fixed plate (37) fixedly installed on the inner wall of the sleeve (34). One end of a compression spring (38) is fixedly installed on the side wall of the fixed plate (37), and a movable plate (39) is fixedly installed on the other end of the compression spring (38). The side wall of the movable plate (39) is fixedly connected to the side wall of the scraper (35). Slide grooves (311) are provided on both sides of the inner wall of the material bucket (2). A pressure block (312) is fixedly installed on the inner wall of the slide groove (311), and a compression block (313) is fixedly installed on the side wall of the scraper (35).

3. The steelmaking charging device for furnaces according to claim 2, characterized in that: The pressure block (312) and the extrusion block (313) are both designed with an arc shape and their positions are adapted to each other.

4. The steelmaking charging device for furnaces according to claim 3, characterized in that: Multiple sets of compression springs (38) are provided, and the multiple sets of compression springs (38) are fixedly installed on the side wall of the fixed plate (37) in a linear array.

5. The steelmaking charging device for furnaces according to claim 4, characterized in that: The feed inlet (36) has multiple sets on the surface of the barrel cover (31), and the scraper (35) is in contact with the inner wall of the barrel (2).

6. The steelmaking charging device for furnaces according to claim 5, characterized in that: The sleeve (34) is provided with an air blowing structure (4). The air blowing structure (4) includes an air bladder (41) fixedly installed on the inner wall of the sleeve (34). The surface of the air bladder (41) is connected to one end of a plurality of air pipes (42). The other end of the air pipes (42) passes through the movable plate (39) and is slidably connected to it. The side wall of the movable plate (39) is fixedly installed with one end of a plurality of T-shaped extrusion plates (43). The other end of the T-shaped extrusion plates (43) passes through the side wall of the fixed plate (37) and is in contact with the side wall of the air bladder (41).

7. The steelmaking charging device for furnaces according to claim 6, characterized in that: Both ends of the airbag (41) are connected to one end of the air inlet pipe (44), and the other end of the air inlet pipe (44) penetrates the side wall of the sleeve (34). A one-way valve is provided on the surface of the air inlet pipe (44).

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