A slag-removing agent delivery device for converter steelmaking

Abstract

The present invention provides a slag-removing agent delivery device for converter steelmaking, which relates to the technical field of steelmaking devices. The slag-removing agent delivery device for converter steelmaking includes a conveying device, a storage barrel is funnel-shaped and installed at the discharge end of the conveying device, a volute is installed below the storage barrel, the axis of the storage barrel passes through the volute center of the volute, a receiving pipe is rotated and arranged at the bottom of the storage barrel, and the other end of the receiving pipe is slidably arranged in the volute, which is used to drive one end of the receiving pipe to slide in the volute. The driving device of the conveying device; the receiving pipe slides along the volute to deliver the slag-removing agent, which is more uniform when delivering. The concentrated delivery of the slag-removing agent is avoided, resulting in the inability to effectively remove the slag on the furnace body. By setting the volute channel, the range of the slag-removing agent is larger when it falls. By setting the blocking platform, the sliding sleeve, etc., it is possible to prevent the slag-removing agent from falling too much in the storage barrel at the initial position and the end position of the volute.

Description

Technical Field

[0001] The invention relates to the technical field of steelmaking devices, in particular to a slag-removing agent feeding device for converter steelmaking. Background Art

[0002] In converter steelmaking, after the converter stops blowing oxygen, the furnace temperature drops and some high-melting-point substances will precipitate and adhere to the converter wall, thus affecting the volume. They need to be removed by slag-removing agents in a timely manner. Currently, in smelting, making good slag is a very important link in the steelmaking process. The smelting slag contains a large amount of various oxides and a small amount of sulfides. In some cases, it also contains a small amount of fluoride and carbide melts. For example, the physical and chemical properties and slag amount of converter steelmaking slag are related to the removal speed and degree of impurities in steel, the absorption of non-metallic inclusions floating from the metal, the splash size and the metal recovery rate.

[0003] A slag-removing agent delivery device for converter steelmaking is disclosed in the patent document with the authorization announcement number CN215440532U, which relates to the technical field of converter steelmaking slag-removing agent, including a delivery device, a conveying device and an adjusting device. The delivery device is provided on the inner side of the delivery device, and the adjusting device is installed on the lower surface of the delivery device. The bracket is a crossbar structure, and a plurality of tensioning rollers and support plates at both ends are provided between the two brackets. The lower surface of the bracket is provided with a support column and a load-bearing column, and the lower surface of the support column is provided with a bolt, and the side surface around the bolt is connected with a corner column, and a fixing block is welded at one end of the bracket. By providing a delivery device, a conveying device and an adjusting device, uniform transportation is achieved through a conveyor belt and a convex block, so as to achieve the effect of fully automatic transportation and uniform speed and safety. The handle is used to drive the rotating shaft to rotate, and the rotating shaft drives the driving gear to rotate. The driven gear rotates to cooperate with the driving gear to move the bolt up and down, and the limit block prevents the driven gear from moving up and down, so as to achieve the effect of adjustable height of the delivery device.

[0004] In the above technical solution, the slag-removing agent is placed through a conveying device and a placing device, but the slag-removing agent is only placed directly into the converter during placement. At this time, the slag-removing agent in the converter is unevenly distributed and the slag on the furnace body cannot be completely removed. Summary of the invention

[0005] The object of the present invention is to provide a slag-removing agent dosing device for converter steelmaking, aiming to solve the problem of uneven dosing of the slag-removing agent dosing device in the prior art.

[0006] To achieve the above object, the present invention adopts the following technical scheme: A slag-removing agent feeding device for converter steelmaking comprises:

[0007] A storage barrel, which is funnel-shaped and mounted at the discharge end of the conveying device;

[0008] A volute groove, the volute groove is installed below the storage barrel, and the axis of the storage barrel passes through the volute center of the volute groove;

[0009] A material receiving pipe, one end of which is rotatably arranged at the bottom of the storage barrel, and the other end of which is slidably arranged in the volute groove;

[0010] Driving device; used to drive one end of the material receiving pipe to slide in the volute groove.

[0011] In order to enable the material receiving pipe of the present invention to bend, a further technical solution is that the material receiving pipe includes a telescopic part, a first connecting part and a second connecting part, and flexible connecting pipes are connected between the telescopic part and the first connecting part, and between the telescopic part and the second connecting part. The telescopic part is a telescopic tube, and the first connecting part and the second connecting part are both hard pipes. The first connecting part is rotatably connected to the bottom of the storage barrel.

[0012] In order to enable the present invention to have the function of positioning the second connection part, a further technical solution is that a guide wheel sliding along the vortex direction of the volute groove is installed on the second connection part.

[0013] In order to enable the volute groove of the present invention to move up and down, a further technical solution of the present invention is that a connecting arm is installed on the storage barrel, and a telescopic component is hinged between the connecting arm and the volute groove, thereby being able to drive the volute groove to rise and fall relative to the storage barrel.

[0014] In order to enable the present invention to drive the material receiving pipe to slide in the volute groove, a further technical solution of the present invention is that the driving device includes a driving motor installed on the outer wall of the storage barrel, and a driving gear is installed at the output end of the driving motor. A driven gear is meshed on the driving gear, and the driven gear is mounted on the first connecting part and fixed coaxially therewith. A connecting piece is also installed between the driven gear and the material receiving pipe to provide a combined force tangential to the volute groove for the rotation of the material receiving pipe to prevent the flexible connecting pipe from twisting.

[0015] In order to enable the present invention to have the function of preventing the flexible connecting pipe from twisting, a further technical solution of the present invention is that the connecting member is a spring, one end of the spring is connected to the driven gear, and the other end of the spring is connected to the telescopic part.

[0016] In order to prevent the flexible connecting tube from twisting, a further technical solution of the present invention is that the connecting member is a telescopic rod, one end of the telescopic rod is hinged on the driven gear, and the other end is hinged on the telescopic part.

[0017] In order to enable the present invention to prevent the slagging agent from falling into a wider range, a further technical solution of the present invention is that the spiral groove extends a spiral channel downward and outward, and the discharge port of the second connecting part is inclined away from the axis of the spiral groove 4.

[0018] In order to enable the present invention to have the function of sealing the second connecting portion, a further technical solution of the present invention is that a sealing platform is installed in the spiral channel, and two sealing platforms are provided and are respectively located at the starting and ending ends of the spiral groove.

[0019] In order to enable the present invention to have the function of sealing the second connecting part, a further technical solution of the present invention is that a sliding sleeve is provided at the bottom of the second connecting part for sliding up and down, the sliding sleeve has an inclined surface, a return spring is installed between the sliding sleeve and the second connecting part, and the sealing platform has a slope that can contact the inclined surface.

[0020] The beneficial effects of the present invention are:

[0021] The slagging agent is transported by a conveying device. When the slagging agent enters the storage barrel, it falls into the converter through the receiving pipe. During this process, the receiving pipe is driven to rotate by a driving device, and one end of the receiving pipe slides in the volute groove. By setting a positioning piece, the receiving pipe is offset up and down when sliding in the volute groove and can prevent the receiving pipe from being worn. The volute groove is roughly annular in shape. When the receiving pipe slides along the volute groove, the slagging agent is added, and the addition is more uniform. To avoid the concentrated addition of slagging agent, which leads to the ineffective removal of slag on the furnace body, the volute passage is set, and the range of the slagging agent is larger when it falls. By setting a blocking platform, a sliding sleeve, etc., it is possible to prevent the slagging agent from falling too much in the storage barrel at the initial position and the end position of the volute groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0023] Figure 2 It is a schematic structural diagram of a driving device according to a specific embodiment of the present invention.

[0024] Figure 3 It is a schematic structural diagram of a spiral groove in a specific embodiment of the present invention when viewed from above.

[0025] Figure 4 It is a structural schematic diagram of a material receiving pipe according to a specific embodiment of the present invention.

[0026] Figure 5 It is a schematic structural diagram of the second embodiment of the present invention.

[0027] Figure 6It is a schematic structural diagram of the third embodiment of the present invention.

[0028] Figure 7 4 is a schematic structural diagram of a fourth embodiment of the present invention.

[0029] Figure 8 The present invention Figure 6 Schematic diagram of the enlarged structure at A in the middle.

[0030] Fig. 9 2 is a schematic diagram of the structure in which the inclined surface contacts the slope in the fourth embodiment of the present invention.

[0031] Fig.10 It is a structural schematic diagram of the second connecting part of the present invention moving above the blocking platform.

[0032] In the figure: 1. conveying device; 101. material receiving plate; 102. material blocking plate; 2. storage barrel; 3. material receiving pipe; 31. telescopic part; 32. first connecting part; 33. second connecting part; 34. flexible connecting pipe; 4. volute groove; 5. guide wheel; 51. wheel body; 52. annular groove; 6. driving device; 61. driving motor; 62. driving gear; 63. driven gear; 64. connecting piece; 7. ramp; 8. connecting assembly; 81. connecting arm; 82. telescopic part; 9. volute channel; 10. sealing platform; 11. sliding sleeve; 12. inclined surface; 13. reset spring. DETAILED DESCRIPTION

[0033] The technical problem to be solved by the present invention is: one end of the receiving pipe 3 is driven to slide in the volute groove 4 by the driving device 6, and the slag-forming agent slides in the volute groove 4 as the receiving pipe 3 rotates, and the slag-forming agent is evenly distributed in the converter below the volute groove 4, so that when the slag of the molten steel in the converter is melted, it can be ensured that the slag is melted more thoroughly.

[0034] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0035] like Figure 1-4 As shown, it is a first embodiment of the slagging agent, comprising a conveying device 1, a storage barrel 2 is arranged at the discharge port of the conveying device 1, the storage barrel 2 is in a funnel shape with upper and lower ends opened and is installed below the discharge end of the conveying device 1, and the upper end opening diameter of the storage barrel 2 is larger than the lower end opening diameter;

[0036] like Figure 1As shown, the conveying device 1 includes a conveyor belt, a material receiving plate 101 is installed at the discharge end of the conveyor belt, and two material baffles 102 arranged in an eight-shaped shape are arranged on the material receiving plate 101, and the end with the smallest distance between the two material baffles 102 corresponds to the top of the storage barrel 2. After the conveyor belt outputs the material from its output end to the material receiving plate 101, the material can fall into the storage barrel 2; a spiral plate is arranged at the bottom of the storage barrel 2 to form a spiral groove 4, and the spiral groove 4 is in a closed loop state, and the axis of the storage barrel 2 passes through the spiral center of the spiral groove 4, and a material receiving pipe 3 is installed between the storage barrel 2 and the spiral groove 4, and the material receiving pipe 3 is arranged at the bottom of the storage barrel 2 and communicated with the storage barrel 2, so that the material is discharged through the material receiving pipe 3;

[0037] like Figure 4 As shown, the material receiving pipe 3 includes a telescopic part 31, a first connecting part 32 and a second connecting part 33. A flexible connecting pipe 34 is connected between the telescopic part 31 and the first connecting part 32, and between the telescopic part 31 and the second connecting part 33. The telescopic part 31 is a telescopic tube, and the first connecting part 32 and the second connecting part 33 are both hard pipes. The first connecting part 32 is rotatably connected to the bottom of the storage barrel 2, and the second connecting part 33 slides along the volute groove 4 and extends downward from the volute groove 4 by one end. A guide wheel 5 is installed on the material receiving pipe 3 to prevent the second connecting part 33 from moving up and down in the volute groove 4; when the second connecting part 33 slides in the volute groove 4, the first connecting part 32 rotates at the bottom of the storage barrel 2, and at the same time, when the second connecting part 33 is farther and farther away from the volute center of the volute groove 4, the telescopic part 31 gradually extends; in this embodiment, the discharge port of the second connecting part 33 is vertically downward;

[0038] refer to Figure 2 and Figure 4 The guide wheel 5 includes a wheel body 51, which is rotatably arranged on the second connecting portion 33. The axis of the guide wheel 5 is vertically arranged. The guide wheel 5 is provided with an annular groove 52 coaxial therewith. When the guide wheel is assembled on the spiral groove 4 of the spiral plate, the top wall of the spiral plate contacts the inner top wall of the annular groove 52, and the bottom wall of the spiral plate contacts the bottom wall of the annular groove 52, thereby limiting the guide wheel 5 from moving up and down relative to the spiral groove 4. It is particularly noted that the guide wheel 5 can also be fixedly arranged on the second connecting portion 33. In this case, the material of the guide wheel 5 needs to be wear-resistant material. By arranging the guide wheel 5, when one end of the receiving pipe 3 slides in the spiral groove 4, the second connecting portion 33 can be prevented from moving up and down.

[0039] like Figure 2As shown, a driving device 6 for driving the receiving pipe 3 to rotate is installed on the storage barrel 2. When the driving device 6 drives the upper end of the receiving pipe 3 to rotate, the lower end of the receiving pipe 3 moves along the vortex direction of the volute groove 4, so that the distance between the receiving pipe 3 and the center of the volute groove 4 gradually increases. When the material is discharged through the lower end of the receiving pipe 3, the slagging agent is evenly put into the converter.

[0040] Continue to refer Figure 2 and Figure 4 The driving device 6 includes a driving motor 61 installed on the outer wall of the storage barrel 2, and a driving gear 62 is installed at the output end of the driving motor 61. A driven gear 63 is meshed with the driving gear 62. The driven gear 63 is coaxially fixed with the first connecting part 32. A flow hole is penetrated in the middle of the driven gear 63 for the slagging agent to flow from the storage barrel 2 into the first connecting part 32 through the flow hole. A connecting piece 64 is installed between the driven gear 63 and the telescopic part 31; the driving motor 61 rotates to drive the driving gear 62 to rotate, and when the driving gear 62 rotates, it drives the driven gear 63 at the bottom of the storage barrel 2 to rotate. When the driven gear 63 rotates, it drives the material receiving pipe 3 to slide in the volute groove 4 through the connecting piece 64. The connecting piece 64 provides a combined force tangential to the volute groove 4 for the rotation of the material receiving pipe 3, so as to prevent the flexible connecting pipe 34 from being twisted and affecting the falling of the slagging agent;

[0041] like Figure 2 As shown, the connecting member 64 is a spring, one end of the spring is connected to the driven gear 63, and the other end of the spring is connected to the telescopic portion 31;

[0042] like Figure 2 As shown, a connecting assembly 8 is installed between the storage barrel 2 and the volute trough 4, and the connecting assembly 8 includes a connecting arm 81 extending from the outer wall of the storage barrel 2 to both ends, and a telescopic component 82 is provided between the connecting arm 81 and the volute trough 4; in a specific implementation, the telescopic component 82 is an electric telescopic rod, one end of which is hinged to the connecting arm 81 through a hinge assembly, a pin shaft or other rotating connecting parts, and the other end is hinged to the edge of the volute trough 4; when the height of the steel in the converter is different, by adjusting the height of the volute trough 4, it is avoided that the lower end of the material receiving pipe 3 is too far away from the bottom wall of the converter, resulting in excessive final velocity of the material discharged from the lower end of the material receiving pipe 3, causing the molten steel to spray when the slag-removing agent falls into the molten steel.

[0043] When it is necessary to add slag-removing agent, it is transported by the conveying device 1. When the slag-removing agent enters the storage barrel 2, it falls into the converter through the receiving pipe 3. In this process, the receiving pipe 3 is driven to rotate by the driving device 6. One end of the receiving pipe 3 slides in the spiral groove 4. By setting the guide wheel 5, the receiving pipe 3 is offset up and down when sliding in the spiral groove 4 and can prevent the receiving pipe 3 from being worn. The slag-removing agent is added when the receiving pipe 3 slides along the spiral groove 4. The addition is more uniform, avoiding the concentrated addition of the slag-removing agent, which results in the slag on the furnace body not being effectively removed.

[0044] refer to Figure 5 , which is the second embodiment of the present invention, and the difference from the above-mentioned first embodiment is that: the connecting member 64 is a telescopic rod, one end of the telescopic rod is hinged on the driven gear 63, and the other end is hinged on the telescopic part 31. In other embodiments, when the driven gear 63 rotates, the connecting member 64 can drive the material receiving pipe 3 to slide in the spiral groove 4; in addition, the discharge port of the second connecting part 33 is inclined away from the axis of the spiral groove 4, which can increase the discharge range from the discharge port of the second connecting part 33, so that the slagging agent can cover a larger range when it falls. The other structures are basically the same as the first embodiment.

[0045] like Figure 6 As shown, as a variation of the second embodiment of the present invention, in the third embodiment of the present invention, the discharge port of the second connecting portion 33 is vertically downward, and the spiral groove 4 extends a spiral channel 9 downward and outward. When the slagging agent falls into the spiral channel 9, it can move to the side away from the spiral center with the help of the initial velocity of the fall, which will also make the slagging agent cover a larger area when falling. The slagging agent can also achieve the effect of covering a larger area when falling.

[0046] like Figure 7-9 As shown, in the fourth embodiment of the present invention, a sealing platform 10 is installed in the spiral channel 9, and two sealing platforms 10 are provided and are respectively located at the starting and ending ends of the spiral groove 4. When the second connecting part 33 moves to above the sealing platform 10, the second connecting part 33 contacts the top of the sealing platform 10. When the second connecting part 33 moves to above the sealing platform 10, the slag-forming agent in the material receiving pipe 3 is prevented from falling, thereby closing the discharge port of the material receiving pipe 3.

[0047] refer to Figure 8 and Fig. 9A sliding sleeve 11 is provided at the bottom of the second connecting part 33 for sliding up and down. The sliding sleeve 11 has an inclined surface 12. A return spring 13 is installed between the sliding sleeve 11 and the second connecting part 33. The blocking platform 10 has a slope 7 that can contact the inclined surface 12. When the second connecting part 33 moves to the top of the blocking platform 10, the second connecting part 33 still has a certain inertia of movement. At this time, the inclined surface 12 contacts the slope 7, and the return spring 13 contracts to offset the inertia of movement of the second connecting part 33, and at the same time can prevent the slag-removing agent in the receiving pipe 3 from falling.

[0048] It should be noted that: Reference Figure 4 and Fig.10 Even when the discharge port of the second connection part 33 is vertically downward, a blocking platform 10 can be set at both ends of the start and end of the spiral groove 4 to limit the discharge of materials from the discharge port of the second connection part 33, which means that the inclined surface 12 of the second connection part 33 is not necessary.

[0049] Those skilled in the art may realize that in the first and second embodiments, blocking platforms 10 may be provided at both ends of the start and end of the spiral groove 4 to limit the slagging agent from being discharged from the discharge port of the second connecting portion 33 .

[0050] The working principle of the present invention is as follows: the slag-removing agent is transported by the conveying device 1. When the slag-removing agent enters the storage barrel 2, it falls into the converter through the material receiving pipe 3. In this process, the material receiving pipe 3 is driven to rotate by the driving device 6, and one end of the material receiving pipe 3 slides in the spiral groove 4. By setting the guide wheel 5, the material receiving pipe 3 is offset up and down when sliding in the spiral groove 4 and can prevent the material receiving pipe 3 from being worn. A circle of the spiral groove 4 is roughly annular. When the material receiving pipe 3 slides along the spiral groove 4, the slag-removing agent is added, and the addition is more uniform; the concentrated addition of the slag-removing agent is avoided, resulting in the ineffective removal of the slag on the furnace body. By setting the spiral channel, the slag-removing agent has a larger falling range when it falls. By setting the sealing platform 10, the sliding sleeve 11, etc., it is possible to prevent the slag-removing agent from falling too much in the storage barrel 2 at the initial position and the end position of the spiral groove.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A slag-removing agent feeding device for converter steelmaking, characterized in that: include: A storage barrel (2), the storage barrel (2) being a hollow structure with openings at both ends; A volute groove (4), the volute groove (4) being installed below the storage barrel (2), and the axis of the storage barrel (2) substantially passes through the volute center of the volute groove (4); A material receiving pipe (3), the upper end of which is rotatably arranged at the bottom of the storage barrel (2), and the lower end of which is slidably arranged in the volute groove (4); A driving device (6) is used to drive the lower end of the material receiving pipe (3) to slide in the vortex direction of the volute groove (4), so that the distance between the material receiving pipe (3) and the center of the volute groove (4) gradually increases or decreases, so as to evenly feed the slagging agent into the converter; The material receiving pipe (3) comprises a telescopic portion (31), a first connecting portion (32) and a second connecting portion (33); a flexible connecting pipe (34) is connected between the telescopic portion (31) and the first connecting portion (32), and between the telescopic portion (31) and the second connecting portion (33); the telescopic portion (31) is a telescopic pipe, the first connecting portion (32) and the second connecting portion (33) are both made of hard pipes, the first connecting portion (32) is rotatably connected to the bottom of the storage barrel (2), and the second connecting portion (33) slides along the spiral direction of the spiral groove (4); The driving device (6) comprises a driving motor (61) mounted on the outer wall of the storage barrel (2); a driving gear (62) is mounted on the output end of the driving motor (61); a driven gear (63) is meshed with the driving gear (62); the driven gear (63) is sleeved on the first connecting portion (32) and is coaxially fixed therewith; a connecting piece (64) is also mounted between the driven gear (63) and the material receiving pipe (3) to provide a combined force tangential to the volute groove (4) for the rotation of the material receiving pipe (3) to prevent the flexible connecting pipe (34) from twisting.

2. The slag-removing agent feeding device for converter steelmaking according to claim 1, characterized in that: The second connecting portion (33) is provided with a guide wheel (5) which slides along the spiral direction of the spiral groove (4).

3. The slag-removing agent feeding device for converter steelmaking according to claim 1, characterized in that: A connecting arm (81) is installed on the storage barrel (2), and a telescopic component (82) is hinged between the connecting arm (81) and the volute groove (4), so that the volute groove (4) can be driven to rise and fall relative to the storage barrel (2).

4. The slag-removing agent feeding device for converter steelmaking according to claim 1, characterized in that: The connecting member (64) is a spring, one end of which is connected to the driven gear (63), and the other end of which is connected to the telescopic part (31).

5. The slag-removing agent feeding device for converter steelmaking according to claim 1, characterized in that: The connecting member (64) is a telescopic rod, one end of which is hinged on the driven gear (63), and the other end of which is hinged on the telescopic portion (31).

6. The slag-removing agent feeding device for converter steelmaking according to any one of claims 1 to 4, characterized in that: The volute groove (4) extends downward and outward to form a volute channel (9), and the discharge port of the second connecting portion (33) is inclined away from the axis of the volute groove (4).

7. The slag-removing agent feeding device for converter steelmaking according to claim 6, characterized in that: A blocking platform (10) is installed in the spiral channel (9), and two blocking platforms (10) are provided and are respectively located at the beginning and end of the spiral groove (4).

8. The slag-removing agent feeding device for converter steelmaking according to claim 7, characterized in that: A sliding sleeve (11) is provided at the bottom of the second connecting portion (33) for sliding up and down movement, the sliding sleeve (11) having an inclined surface (12), a return spring (13) is installed between the sliding sleeve (11) and the second connecting portion (33), and the blocking platform (10) has a slope (7) that can contact the inclined surface (12).

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