Fly ash injection device for blast furnace

Abstract

The invention discloses a blast furnace fly ash injection device. The blast furnace fly ash injection device comprises an automatic collecting assembly, an injection structure, an annular support and an equipment base. The invention belongs to the technical field of coal ash injection, and particularly relates to a blast furnace coal ash injection device. According to the fly ash recycling device, splashing fly ash is recycled, by means of the physical characteristics of ER liquid, when the ER liquid is in a fluid state, the deformation soft cushions naturally turn downwards due to gravity, the supporting framework can support the deformation soft cushions, and the fly ash can be collected through the sunken collecting areas on the multiple sets of deformation soft cushions; when the collected fly ash needs to be recycled, the ER liquid in the solid state enables the mechanical strength of the deformation soft cushion to be increased, the condition for maintaining the position of the deformation soft cushion can be provided for the deformation soft cushion, the fly ash can slide downwards along the concave collecting area and gradually converge in the collecting container to be stored, automatic storage after the fly ash is collected is achieved, and the labor intensity of workers is reduced. And the problems of energy waste and environmental pollution are effectively solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fly ash injection, and particularly relates to a blast furnace fly ash injection device. BACKGROUND

[0002] Modern blast furnaces need coke for smelting, which provides heat required in the smelting process, reducing agent required for reducing iron ore, and framework for maintaining the permeability of the blast furnace column. The blast furnace injects fly ash, that is, finely ground non-smoke fly ash or smoke fly ash or mixed fly ash of the two, from the tuyere of the blast furnace to replace coke to provide heat and reducing agent, thereby reducing the coke ratio and the cost of pig iron. It is a major technical revolution in modern blast furnace smelting. Blast furnace coal injection is a revolutionary measure for modern blast furnace ironmaking technology, and it is a key technology for blast furnace ironmaking to compete with other ironmaking methods and continue to survive and develop.

[0003] The prior art discloses a blast furnace coal injection machine, and the publication number is CN109174325B. A raw coal bin is installed above the grinding box, and the bottom end outlet of the raw coal bin corresponds to the center of the grinding table. A powder receiving groove is arranged below the powder screening area and is connected to the fly ash separator through a pipeline. The structure is simple, the manufacturing cost is low, the powdering efficiency is high, and energy is saved. However, the blast furnace fly ash injection scheme disclosed in the application still uses the fly ash separator and the coal injection system for coal injection. The prior art does not involve other functions, and it is difficult to provide convenience for fly ash recovery during implementation. It not only easily causes waste of energy, but also causes environmental pollution. Therefore, a blast furnace fly ash injection device needs to be proposed. SUMMARY

[0004] In view of the above problems, the present application provides a blast furnace fly ash injection device, which effectively solves the problem of difficult fly ash recovery, easy energy waste and environmental pollution of the existing blast furnace fly ash injection equipment.

[0005] The technical scheme adopted by the present application is as follows: The present application provides a blast furnace fly ash injection device, which comprises an automatic collection assembly, an injection structure, an annular support and a device base. The device base is arranged on a plane, the injection structure is arranged on the device base, the annular support is arranged on the injection structure, the automatic collection assembly is arranged on the annular support, and the injection structure is provided with a coal injection outlet.

[0006] As preferred, the automatic collecting assembly comprises a support skeleton, a deformation cushion, a parallel-plate capacitor, an internal deformation groove, a support ring, a surrounding strut, a top support plate and a support base, the support base is arranged on the annular support, the surrounding struts are arranged in groups and fixedly connected to the support base, the top support plate is fixedly connected to the top of the surrounding struts, the support ring is fixedly connected to the middle lower part of the surrounding struts, the deformation cushion is arranged on the gap formed by the support ring and the surrounding struts through bottom rotation, the bottom of the deformation cushion is connected with a collecting container, the internal deformation groove is arranged in the deformation cushion, the support skeleton is fixedly connected in the internal deformation groove, the parallel-plate capacitors are arranged oppositely between the inner walls of the internal deformation groove, the gap between the internal deformation groove and the support skeleton is provided with an ER liquid, and the parallel-plate capacitors and the ER liquid are matched.

[0007] Further, the blowing structure comprises a feeding cylinder, a feeding port, a refining shell, a rotating coal disc, a refining blade, a refining shaft, a rotating bearing, a rotating blade, a rotating support, a rotating motor, a conveying shell, a conveying shaft and a conveying driving element, the conveying driving element is arranged on the equipment base, the conveying shell is arranged on the equipment base, the conveying shaft is rotatably arranged in the conveying shell, the conveying driving element is drivingly arranged on the conveying shell and used to drive the conveying shaft to rotate, the spiral blade on the conveying shaft can convey the fly ash when rotating, the feeding cylinder is communicatively arranged on the top of the conveying shell, the feeding port is arranged on the feeding cylinder, the refining shell is embedded on the equipment base, the rotating supports are fixedly connected to the equipment base in two groups, the refining shaft is rotatably arranged between the two groups of rotating supports, the rotating bearings are sleeved on the refining shaft in groups, the rotating coal disc is arranged on the refining shaft, the refining blades are arranged around the rotating coal disc, the rotating blade is arranged on the refining shaft, and the machine body of the rotating motor is arranged on one of the rotating supports.

[0008] Preferably, the support skeleton is made of spring steel, the support skeleton is in a strip shape, and the support skeleton is arranged in groups and vertically in the internal deformation groove.

[0009] Further, the deformation cushion is arranged in groups, the center of each group of the deformation cushion is provided with a recessed collecting area, so as to improve the collecting effect of the fly ash; and the collecting container is in communication with the recessed collecting area.

[0010] Preferably, the deformation cushion is made of silica gel, and the support skeleton can apply a force to the deformation cushion to reset the deformation cushion to the direction of the surrounding strut.

[0011] Preferably, the annular support is fixedly connected to the outer wall of the conveying shell, and the automatic collecting assembly below the feeding port can collect the fly ash in the first time.

[0012] Further, the internal deformation groove is arranged in three groups in the deformation cushion, so as to provide the deformation cushion with a condition for maintaining the position of the deformation cushion.

[0013] Further, the output end of the rotating motor is connected with the refining rotating shaft, for driving the rotating coal disc and the rotating blade to refine the fly ash in multiple stages.

[0014] The coal injection outlet is communicated with the refining shell, and the fly ash is injected through a matched coal injection system.

[0015] The beneficial effects achieved by the above structure are as follows: the blast furnace fly ash injection device provided by the present application effectively solves the problems of difficult fly ash recovery, easy energy waste and environmental pollution of the existing blast furnace fly ash injection equipment, and the method brings the following advantages: (1) The automatic collection assembly is provided in the present application, and a part of the fly ash will splash outward during the feeding and refining of the fly ash. The present application aims to recycle the splashed fly ash. By means of the physical properties of the ER liquid, when the ER liquid is in a fluid state, the deformation soft pad is naturally turned down due to gravity, the support skeleton can support the deformation soft pad, and the recessed collection area on the deformation soft pad can collect the fly ash. When the collected fly ash needs to be recycled, the deformation soft pad is closed, the spring steel support skeleton can provide a force for the deformation soft pad to reset in the direction of the surrounding support rod, the mechanical strength of the deformation soft pad is increased by the ER liquid in a solid state, which can provide conditions for maintaining the position of the deformation soft pad, the fly ash can slide downward along the recessed collection area and gradually gather in the collection container for storage, and finally the fly ash can be taken out from the collection container for reuse, realizing automatic storage of the collected fly ash, providing an automatic experience, and effectively solving the problems of energy waste and environmental pollution; (2) The raw material is sent into the device through the feeding port, the driving conveying shaft is controlled to rotate by the conveying driving element, the spiral blade on the conveying shaft can convey the fly ash during rotation, the rotating coal disc and the rotating blade are controlled to rotate by the rotating motor, the rotating blade and the multiple sets of refining blades can refine the fly ash in multiple stages to improve the quality of the fly ash, and the fly ash is injected from the coal injection outlet through the matched coal injection system, and the blast furnace fly ash injection operation is completed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure diagram of the blast furnace fly ash injection device provided by the present application is provided. Figure 2 A perspective view of the injection structure, the annular support and the equipment base provided by the present application is provided. Figure 3 A partial structure diagram of the injection structure, the annular support and the equipment base provided by the present application is provided. Figure 4The three-dimensional representation of the rotating coal disc, refining blade, refining shaft, rotating bearing, rotating blade, and rotating support provided by this invention Figure 1 ; Figure 5 The three-dimensional representation of the rotating coal disc, refining blade, refining shaft, rotating bearing, rotating blade, and rotating support provided by this invention Figure 2 ; Figure 6 A perspective view of the conveyor shaft provided by the present invention; Figure 7 A schematic diagram of the structure of the automatic collection component provided by the present invention; Figure 8 A schematic diagram showing the state of the automatic collection component provided by the present invention when the deformable pad is opened; Figure 9 A cross-sectional view of the automatic collection component provided by the present invention; Figure 10 for Figure 9 A magnified view of part A.

[0017] The components include: 1. Automatic collection assembly; 2. Pulverizing structure; 3. Ring support; 4. Equipment base; 5. Pulverized coal outlet; 6. Support frame; 7. Deformation pad; 8. Parallel plate capacitor; 9. Internal deformation groove; 10. Support ring; 11. Surrounding support rod; 12. Top support plate; 13. Support base; 14. Collection container; 15. ER liquid; 16. Button; 17. Feed cylinder; 18. Feed inlet; 19. Refining shell; 20. Rotating coal pan; 21. Refining blade; 22. Refining shaft; 23. Rotating bearing; 24. Rotating blade; 25. Rotating support; 26. Rotating motor; 27. Conveying shell; 28. Conveying shaft; 29. ​​Conveying drive component; 30. Recessed collection area.

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0021] As shown in Figures 1-3 , the present application provides a blast furnace fly ash injection device, comprising an automatic collection assembly 1, an injection structure 2, an annular support 3 and a device base 4, the device base 4 is arranged on a plane, the injection structure 2 is arranged on the device base 4, the annular support 3 is arranged on the injection structure 2, the automatic collection assembly 1 is arranged on the annular support 3, and the injection structure 2 is provided with a coal injection outlet 5.

[0022] As shown in Figure 1 , Figures 7-10 , the automatic collection assembly 1 comprises a support framework 6, a deformation soft pad 7, a parallel plate capacitor 8, an internal deformation groove 9, a support ring 10, a surrounding support rod 11, a top support plate 12 and a support base 13, the support base 13 is arranged on the annular support 3, the surrounding support rod 11 is divided into several groups and is fixedly connected to the support base 13, the top support plate 12 is fixedly connected to the top of the surrounding support rod 11, the support ring 10 is fixedly connected to the lower part of the middle of the surrounding support rod 11, the deformation soft pad 7 is arranged on the gap formed by the support ring 10 and the surrounding support rod 11 through bottom rotation, the bottom of the deformation soft pad 7 is connected with a collection container 14, the internal deformation groove 9 is arranged in the deformation soft pad 7, the support framework 6 is fixedly connected in the internal deformation groove 9, the parallel plate capacitors 8 are arranged opposite to each other between the inner walls of the internal deformation groove 9, the gap between the internal deformation groove 9 and the support framework 6 is provided with an ER liquid 15, and the parallel plate capacitors 8 and the ER liquid 15 are matched; the top of the deformation soft pad 7 is provided with a button 16, and the button 16 and the parallel plate capacitors 8 are electrically connected.

[0023] As shown in Figures 1-6As shown, the injection structure 2 comprises a feeding cylinder 17, a feeding port 18, a refining shell 19, a rotating coal disc 20, a refining blade 21, a refining shaft 22, a rotating bearing 23, a rotating blade 24, a rotating support 25, a rotating motor 26, a conveying shell 27, a conveying shaft 28 and a conveying drive 29. The conveying drive 29 is arranged on the equipment base 4, the conveying shell 27 is arranged on the equipment base 4, the conveying shaft 28 is rotatably arranged in the conveying shell 27, the conveying drive 29 is drivingly arranged on the conveying shell 27 and used to drive the conveying shaft 28 to rotate, the helical blade on the conveying shaft 28 can convey the fly ash when rotating, the feeding cylinder 17 is communicatively arranged at the top of the conveying shell 27, the feeding port 18 is arranged on the feeding cylinder 17, the refining shell 19 is embedded on the equipment base 4, the rotating supports 25 are fixedly arranged on the equipment base 4 in two groups, the refining shaft 22 is rotatably arranged between the two groups of rotating supports 25, the rotating bearings 23 are sleeved on the refining shaft 22 in several groups, the rotating coal disc 20 is arranged on the refining shaft 22, the refining blade 21 is arranged around the rotating coal disc 20, the rotating blade 24 is arranged on the refining shaft 22, and the body of the rotating motor 26 is arranged on one of the rotating supports 25.

[0024] As shown in Figure 8 and Figure 9 , the support framework 6 is made of spring steel material, the support framework 6 is in strip shape, and the support framework 6 is vertically arranged in the internal deformation groove 9 in several groups; the deformation soft pad 7 is arranged in several groups, the center position of the several groups of deformation soft pads 7 is provided with a recessed collection area 30 for improving the collection effect of fly ash; the collection container 14 is in communication with the recessed collection area 30; the deformation soft pad 7 is made of silica gel material; the internal deformation groove 9 is provided with three groups in the deformation soft pad 7.

[0025] As shown in Figure 1 and Figure 3 , the annular support 3 is fixedly connected to the outer wall of the conveying shell 27, and the automatic collection assembly 1 located below the feeding port 18 can collect fly ash at the first time.

[0026] As shown in Figure 4 and Figure 5 , the output end of the rotating motor 26 is connected with the refining shaft 22, which is used to drive the rotating coal disc 20 and the rotating blade 24 to multi-stage refine the fly ash.

[0027] As shown in Figure 3 , the coal injection outlet 5 is in communication with the refining shell 19, and the fly ash is injected through the matched coal injection system.

[0028] Specific use, in the process of feeding and refining of fly ash, a part of fly ash will be splashed outward, in the initial state, parallel plate capacitor 8 is not electrified, ER liquid 15 is in a fluid state, the deformation soft pad 7 is naturally turned down due to gravity, the support skeleton 6 can support the deformation soft pad 7, a plurality of groups of recessed collection area 30 on the deformation soft pad 7 can collect fly ash, when the collected fly ash needs to be recycled, close the deformation soft pad 7, the spring steel support skeleton 6 can provide the deformation soft pad 7 with the force of resetting to the direction of surrounding strut 11, at this time, the button 16 is in contact with the bottom of the top support plate 12, so that the button 16 is pressed down, so that the internal circuit is connected, at this time, the parallel plate capacitor 8 starts to discharge, so that the ER liquid 15 changes to a solid state, at this time, the mechanical strength of the deformation soft pad 7 increases, which can provide the deformation soft pad 7 with the condition of maintaining its position, so that the collected fly ash can slide down along the recessed collection area 30 and gradually gather in the collection container 14 for storage, finally, the fly ash can be taken out from the collection container 14 for reuse, realizing automatic storage of fly ash after collection, providing an automatic experience, and effectively solving the problems of energy waste and environmental pollution; the raw materials are sent into the device through the feeding port 18, the driving transmission shaft 28 is controlled to rotate by the transmission driving piece 29, the spiral blade on the transmission shaft 28 can convey fly ash when rotating, the rotary coal disc 20 and the rotary blade 24 are controlled to rotate by the rotating motor 26, the rotary blade 24 and the plurality of refining blades 21 can refine fly ash in multiple stages, improving the quality of fly ash, and the fly ash is sprayed out from the coal injection outlet 5 through the matched coal injection system, completing the injection operation of blast furnace fly ash.

[0029] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application.

[0031] The above describes the present application and its embodiments, which are not limited, and the drawings shown are only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution can be designed, which shall belong to the protection scope of the present application.

Claims

1. A blast furnace pulverized coal injection device, comprising a device base (4) arranged on a plane, characterized in that: It also includes an automatic collection assembly (1), a spray structure (2) and a ring-shaped support (3), the spray structure (2) is arranged on the equipment base (4), the ring-shaped support (3) is arranged on the spray structure (2), the automatic collection assembly (1) is arranged on the ring-shaped support (3), and the spray structure (2) is provided with a coal injection outlet (5).

2. A blast furnace pulverized coal injection device according to claim 1, characterized in that: The automatic collection assembly (1) includes a support skeleton (6), a deformation soft pad (7), a parallel plate capacitor (8), an internal deformation groove (9), a support ring (10), a surrounding support rod (11), a top support plate (12) and a support base (13), the support base (13) is arranged on the ring-shaped support (3), the surrounding support rod (11) is divided into a plurality of groups and is fixedly connected to the support base (13), the top support plate (12) is fixedly connected to the top of the surrounding support rod (11), the support ring (10) is fixedly connected to the lower part of the middle part of the surrounding support rod (11), the deformation soft pad (7) is arranged on the gap formed by the support ring (10) and the surrounding support rod (11) through bottom rotation, the bottom of the deformation soft pad (7) is connected with a collection container (14), the internal deformation groove (9) is arranged in the deformation soft pad (7), the support skeleton (6) is fixedly connected in the internal deformation groove (9), the parallel plate capacitors (8) are oppositely arranged between the inner walls of the internal deformation groove (9), the gap between the internal deformation groove (9) and the support skeleton (6) is provided with an ER liquid (15), and the parallel plate capacitors (8) and the ER liquid (15) are matched; the top of the deformation soft pad (7) is provided with a button (16), and the button (16) and the parallel plate capacitors (8) are electrically connected.

3. A blast furnace pulverized coal injection device according to claim 2, characterized in that: Said injection structure (2) comprises a feeding cylinder (17), a feeding port (18), a refining shell (19), a rotating coal disc (20), a refining blade (21), a refining rotating shaft (22), a rotating bearing (23), a rotating blade (24), a rotating support (25), a rotating motor (26), a conveying shell (27), a conveying shaft (28) and a conveying driving element (29), the conveying driving element (29) is arranged on the equipment base (4), the conveying shell (27) is arranged on the equipment base (4), the conveying shaft (28) is rotatably arranged in the conveying shell (27), the conveying driving element (29) is drivingly arranged on the conveying shell (27) and used for driving the conveying shaft (28) to rotate, the helical blade on the conveying shaft (28) can convey the pulverized coal when rotating, the feeding cylinder (17) is communicatively arranged at the top of the conveying shell (27), the feeding port (18) is arranged on the feeding cylinder (17), the refining shell (19) is embedded on the equipment base (4), the rotating supports (25) are fixedly connected to the equipment base (4) in two groups, the refining rotating shaft (22) is rotatably arranged between the two groups of rotating supports (25), the rotating bearings (23) are sleeved on the refining rotating shaft (22) in several groups, the rotating coal disc (20) is arranged on the refining rotating shaft (22), the refining blade (21) is arranged on the rotating coal disc (20) in a surrounding manner, the rotating blade (24) is arranged on the refining rotating shaft (22), and the body of the rotating motor (26) is arranged on one of the rotating supports (25).

4. A blast furnace pulverized coal injection device according to claim 3, characterized in that: Said support framework (6) is made of spring steel material, said support framework (6) is in a strip shape, and said support framework (6) is vertically arranged in the internal deformation groove (9) in several groups.

5. A blast furnace pulverized coal injection device according to claim 4, characterized in that: Said deformation soft pad (7) is arranged in several groups, and recessed collection areas (30) are arranged at the central positions of the deformation soft pads (7) in the several groups.

6. A blast furnace pulverized coal injection device according to claim 5, characterized in that: Said deformation soft pad (7) is made of silica gel material.

7. A blast furnace pulverized coal injection device according to claim 6, characterized in that: Said annular support (3) is fixedly connected to the outer wall of the conveying shell (27).

8. A blast furnace pulverized coal injection device according to claim 7, characterized in that: Said internal deformation groove (9) is arranged in three groups in the deformation soft pad (7).

9. A blast furnace pulverized coal injection device according to claim 8, characterized in that: The output end of the rotating motor (26) is connected with the refining rotating shaft (22).

10. A blast furnace pulverized coal injection device according to claim 9, characterized in that: Said coal injection outlet (5) is communicatively arranged on the refining shell (19).

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