Multifunctional internal slag cleaning device for tuyere

Abstract

A multifunctional internal slag iron cleaning device of tuyere comprises a movable trolley, a movable platform, a height adjustment electric push rod, a connecting rod mechanism, and a slag cleaning mechanism. The movable platform comprises an installation platform and the connecting rod mechanism. The connecting rod mechanism is composed of two front connecting rods, two rear connecting rods, and a four-connecting rod mechanism composed of a first upper connecting shaft, a second upper connecting shaft, a first lower connecting shaft, and a second lower connecting shaft. The cylinder body of the height adjustment electric push rod is arranged on the movable trolley body, and the piston rod end is connected to the middle part of the second upper connecting shaft. The slag cleaning mechanism comprises a mounting seat arranged on the front top surface of the installation platform, an inner drive rod, an inner drive shaft, an inner drive motor, an outer drive rod, an outer drive gear, an outer drive shaft, and an outer drive motor. A pneumatic striking machine is arranged at the rear end of the inner drive rod. At least one replaceable slag cleaning part is arranged at the front end of the inner drive rod and / or the front end of the outer drive rod. The present application solves the problems of time-consuming and labor-intensive manual slag cleaning.

Description

Technical Field

[0001] This invention relates to blast furnace technology, and in particular to a multifunctional tuyeres internal slag and iron cleaning device. Background Technology

[0002] The tuyere sleeve is a crucial piece of equipment in blast furnace production. During maintenance and replacement, it's essential to remove slag and iron from inside the tuyere. The tuyere cleaning operation is challenging due to the numerous pipes surrounding the work area, the harsh environment, the low-lying location (approximately 1.5 meters deep), and the difficulty of observation for the workers. The cleaning operators must use heavy, long steel rods and hammers, bending over and striking the rods with the hammer to remove the slag. The high temperatures prevent prolonged continuous operation. If slag or iron leakage occurs inside the tuyere, the cleaning operation becomes even more difficult. Summary of the Invention

[0003] The purpose of this invention is to design a multifunctional slag and iron cleaning device inside the duct, which solves the problems of time-consuming and labor-intensive manual slag cleaning, long maintenance time, difficulty in ensuring slag cleaning quality, and safety hazards during maintenance operations. Moreover, it replaces operators in completing heavy and complex physical work, improving labor efficiency and slag cleaning quality.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A multifunctional slag and iron cleaning device for air vents includes: a mobile trolley, comprising a trolley body and wheels; a fixed platform protruding from the rear of the trolley body; a movable platform, comprising a mounting platform and a linkage mechanism and a height-adjusting electric push rod; the linkage mechanism consists of two front connecting rods and two rear connecting rods located on the front and rear sides of the mounting platform bottom, and a first and second upper connecting shaft and a first and second lower connecting shaft respectively connecting the two front connecting rods and the two rear connecting rods; the lower part of the two front connecting rods has a first... The two ends of the lower connecting shaft are movably connected to the front of the mobile trolley body; the two ends of the second lower connecting shaft at the bottom of the two rear connecting rods are movably connected to the rear of the trolley body; the cylinder of the height adjustment electric push rod is set on the fixed platform at the rear of the mobile trolley body, and its piston rod end is connected to the middle of the second upper connecting shaft; the slag and iron cleaning mechanism includes: a mounting base, set at the front of the top surface of the mounting platform, which is a shell structure with a cavity, and has a central through hole running through the center of the axial direction; an inner drive rod, the rear of which passes through the... The mounting base has a central through hole. An inner drive gear and bearings on both sides are mounted on the inner drive rod within the mounting base. An inner drive shaft, one end of which is located within the mounting base and arranged parallel to one side of the inner drive rod, has an inner drive transmission wheel meshing with the inner drive gear and bearings on both sides. An inner drive motor has its output end connected to the other end of the inner drive shaft via a coupling. An outer drive rod, which is a tube, is sleeved outside the inner drive rod, with its rear end extending into the mounting base. Furthermore, the front and rear ends of the outer drive rod are connected to the inner drive gear. Rolling bearings are provided between the drive rods; an external drive gear is mounted on the external drive rod located within the mounting base; an external drive shaft is located at one end within the mounting base and is arranged parallel to the other side of the inner drive rod, with an external drive transmission wheel meshing with the external drive gear and bearings on both sides of the external drive shaft; an external drive motor has its output end connected to the other end of the external drive shaft via a coupling; a pneumatic impactor is located at the rear end of the inner drive rod; at least one replaceable slag removal component is located at the front end of the inner drive rod and / or the front end of the outer drive rod.

[0006] Furthermore, it is equipped with an electric push rod for angle adjustment;

[0007] A fixed seat is provided on each of the two rear sides of the upper end face of the vehicle body. A guide groove is provided on the fixed seat along the length direction. The two ends of the second lower connecting shaft of the two rear connecting rods pass through the guide groove respectively.

[0008] The cylinder of the angle-adjusting electric push rod is located at the center of the upper end face of the walkable trolley, and the end of its piston rod is connected to the middle of the second lower connecting shaft.

[0009] Furthermore, a vehicle body locking mechanism is also provided, including:

[0010] The connecting plate has an L-shaped structure, with one end pivotally connected to the center of the front of the walkable vehicle body;

[0011] A locking cylinder has its cylinder body tilted and fixed to the side of the connecting plate at the center of the front part of the walkable trolley body, and its piston rod end is connected to the bent part of the connecting plate.

[0012] The locking rod has its rear end connected to the connecting plate and its front end provided with a hook for fastening.

[0013] Preferably, the mounting platform is provided with two parallel slide rails and a slider on them, and the mounting seat of the slag and iron cleaning mechanism is set on the slider; a lead screw is provided in the center of the mounting platform along the axial direction, and a screw hole for the lead screw to be connected is provided in the middle of the bottom of the mounting seat; a propulsion motor is set at the rear end of the center of the top surface of the mounting platform, and its output end is connected to the rear end of the lead screw.

[0014] Preferably, the replaceable slag removal component includes:

[0015] The positioning seat has upper and lower channels arranged in parallel on it. It is sleeved on the front end of the inner drive rod that extends out of the front end of the outer drive rod through the lower channel and locked by a nut.

[0016] A drive gear is sleeved on the front end of the outer drive rod;

[0017] The drive connecting sleeve passes through the channel on the positioning seat in the middle, and its rear end is provided with a transmission gear that meshes with the drive gear;

[0018] A replaceable grinding head is located at the front end of the drive connection sleeve.

[0019] Preferably, the replaceable slag removal component is a conical grinding head, a flat-bottomed grinding head, or a drum-shaped grinding head.

[0020] Preferably, the replaceable grinding head includes a support rod and a grinding head at its front end, with the support rod inserted into the front end of the drive connecting sleeve.

[0021] Preferably, the grinding head is a conical grinding head, a flat-bottomed grinding head, or a drum-shaped grinding head.

[0022] Preferably, the rear of the support rod of the replaceable grinding head is provided with a first connecting flange, and correspondingly, the front end of the drive connecting sleeve is provided with a second connecting flange that mates with the first connecting flange, and the rear of the support rod is inserted into the front of the drive connecting sleeve.

[0023] Preferably, the mating surfaces of the first and second connecting flanges are nested concave-convex structures.

[0024] The rotary slag cleaning device of this invention uses a variable frequency motor and lead screw to drive the forward and backward movement, making the forward and backward movement of the multifunctional rotary slag cleaning device more stable and the driving force greater, which can improve the speed and efficiency of iron slag cleaning.

[0025] This invention designs an external drive rod and an internal drive rod to rotate, realizing the rotation and revolution of the grinding head, and enabling the grinding head to clean residue around the air outlet.

[0026] When the internal drive rod motor rotates, it drives the internal drive shaft, internal drive transmission wheel, and internal drive gear, thereby causing the internal drive rod, positioning seat, and grinding head to rotate together. At this time, the grinding head revolves around the axis of the internal drive rod, so that the grinding head can clean the slag on the circumference of the air vent.

[0027] When the external drive rod motor rotates, it drives the external drive shaft, external drive transmission wheel and external drive gear to rotate, thereby driving the external drive rod to rotate, which in turn drives the drive connecting sleeve on the positioning seat and the grinding head on it to rotate, cleaning the slag in a certain part of the air outlet.

[0028] After the grinding head rotates, it can clean the slag in a certain part (or a local part) of the air vent at a fixed point.

[0029] When the grinding head cannot remove residue from the duct, this invention also incorporates a rotary impact cleaning method. The positioning seat connected to the inner drive rod can be removed, and a rotary impact grinding head can be installed. When the inner drive rod motor rotates, it drives the gears, the inner drive rod, and the grinding head to rotate together. A pneumatic impactor is located at the tail of the inner drive rod, providing axial impact force. When the pneumatic impactor strikes, the impact force is transmitted to the grinding head through the inner drive rod, causing the grinding head to rotate while impacting the slag and iron, thus achieving more effective slag removal.

[0030] To more effectively remove residue from air vents, this invention designs multiple cleaning modes and various types of grinding heads, including conical grinding heads, flat-bottomed grinding heads, and drum-shaped grinding heads, all made of cemented carbide. Large grinding heads are used for overall cleaning (with impact), while small grinding heads are used for localized or circumferential cleaning. The grinding heads are designed to rotate on their own axis and revolve around the drive rod axis, and can be disassembled and replaced at the drive connection sleeve.

[0031] The various shapes of grinding heads of this invention can easily remove slag and iron of different materials and shapes, ensuring the quality and speed of slag removal. The support rod of the grinding head adopts Morse taper and concave-convex flange, making the grinding head replacement convenient and quick. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0033] Figure 2 This is a perspective view of the active platform in an embodiment of the present invention.

[0034] Figure 3 This is a schematic diagram of the slag and iron cleaning mechanism in an embodiment of the present invention.

[0035] Figure 4This is a schematic diagram of the slag and iron cleaning mechanism and the replaceable slag cleaning component in an embodiment of the present invention.

[0036] Figure 5 This is a schematic diagram of the slag and iron cleaning mechanism and the replaceable slag cleaning component (rotary impact grinding head) in an embodiment of the present invention.

[0037] Figure 6 This is a schematic diagram of the replaceable slag cleaning component in an embodiment of the present invention.

[0038] Figure 7 This is an exploded view of the replaceable slag cleaning component in an embodiment of the present invention.

[0039] Figure 8 This is a schematic diagram of the grinding head (flat-bottomed grinding head) structure in an embodiment of the present invention.

[0040] Figure 9 This is a schematic diagram of the structure of the grinding head (conical grinding head) in an embodiment of the present invention.

[0041] Figure 10 This is a schematic diagram of the structure of the grinding head (drum-shaped grinding head) in an embodiment of the present invention.

[0042] Figure 11 This is a cross-sectional view of the replaceable slag removal component (rotary impact grinding head) in an embodiment of the present invention.

[0043] Figure 12 for Figure 11 The right view. Detailed Implementation

[0044] See Figures 1-12 The multifunctional slag and iron cleaning device inside the air vent of the present invention includes:

[0045] The mobile vehicle 1 includes a vehicle body 101 and wheels 102 and 102' underneath it; a fixed platform 103 protrudes from the rear of the vehicle body 101.

[0046] The movable platform 2 includes an installation platform 21 and a linkage mechanism 22 and a height-adjusting electric push rod 23 below it. The linkage mechanism 22 consists of two front connecting rods 221 and two rear connecting rods 222 located on the front and rear sides of the bottom of the installation platform 21, and a four-bar linkage consisting of first and second upper connecting shafts 223 and 223' and first and second lower connecting shafts 224 and 224' respectively connecting the two front connecting rods 221 and the two rear connecting rods 222. The two ends of the first lower connecting shaft 224 at the bottom of the two front connecting rods 221 are movably connected to the front of the vehicle body 101 of the movable trolley 1. The two ends of the second lower connecting shaft 224' at the bottom of the two rear connecting rods 222 are movably connected to a fixed part at the rear of the vehicle body 101. The cylinder of the height-adjusting electric push rod 23 is located on a fixed platform 103 at the rear of the vehicle body 101 of the movable trolley, and its piston rod end is connected to the middle of the second upper connecting shaft 223'.

[0047] Slag and iron cleaning mechanism 3 includes:

[0048] Mounting base 31 is disposed on the top surface of the mounting platform 101 and is a shell structure with a cavity. It has a central through hole 311, 311' that runs through the left and right sides in the axial center.

[0049] An inner drive rod 32 has its rear end passing through the central through holes 311 and 311' of the mounting base 31. An inner drive gear 321 and bearings on both sides are provided on the inner drive rod 32 located in the mounting base 31.

[0050] An inner drive shaft 33 is provided at one end in the mounting base 31 and is arranged parallel to one side of the inner drive rod 32. The inner drive shaft 33 is provided with an inner drive transmission wheel 331 that meshes with the inner drive gear 321 and bearings on both sides thereof.

[0051] An internal drive motor 34, the output end of which is connected to the other end of the internal drive shaft 33 via a coupling;

[0052] The outer drive rod 35 is a tube that is sleeved outside the inner drive rod 32. The rear part of the outer drive rod 35 extends into the mounting base 31. Rolling bearings are provided between the front and rear ends of the outer drive rod 35 and the inner drive rod 32.

[0053] An external drive gear 36 is mounted on an external drive rod 35 located within the mounting base 31;

[0054] An external drive shaft 37 is provided at one end in the mounting base 31 and arranged parallel to the other side of the internal drive rod 32. The external drive shaft 37 is provided with an external drive transmission wheel 371 that meshes with the external drive gear 36 and bearings on both sides thereof.

[0055] An external drive motor 38, the output end of which is connected to the other end of the external drive shaft 37 via a coupling;

[0056] A pneumatic striker 39 is located at the rear end of the inner drive rod 32;

[0057] At least one replaceable slag removal component 4 is disposed at the front end of the inner drive rod 32 and / or the front end of the outer drive rod 35.

[0058] Furthermore, an angle-adjustable electric push rod 7 is also provided;

[0059] A fixed seat 104 is provided on each side of the rear part of the upper end face of the vehicle body 101. A guide groove 1041 is provided on the fixed seat 104 along the length direction. The two ends of the second lower connecting shaft 224' of the two rear connecting rods 222 respectively pass through the guide groove 1041.

[0060] The cylinder of the angle-adjusting electric push rod 7 is located at the center of the upper end face of the walkable trolley body 101, and its piston rod end is connected to the middle of the second lower connecting shaft 224'.

[0061] Furthermore, a vehicle body locking mechanism 5 is also provided, including:

[0062] The connecting plate 51 has an L-shaped structure, one end of which is pivotally connected to the center of the front of the walkable trolley body 101.

[0063] The locking cylinder 52 has its cylinder body tilted and fixed to the side of the connecting plate 51 near the center of the front part of the walkable trolley body 101, and its piston rod end is connected to the bent part of the connecting plate 51.

[0064] The locking rod 53 has its rear end connected to the connecting plate 51, and its front end is provided with a hook 531 for buckling.

[0065] Preferably, the mounting platform 101 is provided with two parallel slide rails 6 and a slider 61 on them, and the mounting base 31 is provided on the slider 61; the mounting platform 21 is provided with a lead screw 62 along the axial direction in the center, and the mounting base 31 is provided with a screw hole in the middle of the bottom for the lead screw 62 to be connected; the propulsion motor 63 is provided at the rear end of the center of the top surface of the mounting platform 21, and its output end is connected to the rear end of the lead screw 62.

[0066] See Figure 6 The replaceable slag cleaning component 4 includes:

[0067] The positioning seat 41 has upper and lower channels 411 and 412 arranged in parallel on it. The lower channel 412 is sleeved on the front end of the inner drive rod 32 that extends out of the front end of the outer drive rod 35 and is locked by a nut.

[0068] The drive gear 42 is sleeved on the front end of the outer drive rod 35;

[0069] The drive connecting sleeve 43 is inserted through the channel 411 on the positioning seat 41 in the middle, and the rear end is provided with a transmission gear 44 that meshes with the drive gear 42.

[0070] A replaceable grinding head 45 is disposed at the front end of the drive connecting sleeve 43.

[0071] See Figure 6 , Figure 7 The replaceable grinding head 45 includes a support rod 451 and a grinding head 453 at its front end, with the support rod 451 inserted into the front end of the drive connecting sleeve 43.

[0072] The rear of the support rod 451 of the replaceable grinding head 45 is provided with a first connecting flange 452. Correspondingly, the front end of the drive connecting sleeve 43 is provided with a second connecting flange 431 that cooperates with the first connecting flange 452. The rear of the support rod 451 is inserted into the front of the drive connecting sleeve 43.

[0073] Preferably, the mating surfaces of the first and second connecting flanges 452 and 431 are nested concave-convex structures.

[0074] See Figures 8-10 The replaceable slag removal component 4 includes a conical grinding head, a flat-bottomed grinding head, or a drum-shaped grinding head.

[0075] The working process of the slag removal device described in this invention is as follows:

[0076] 1) Drive the slag cleaning trolley to the corresponding working position, the lifting and angle adjustment mechanism is activated, so that the traveling platform reaches the working position, and the hook drive cylinder is activated to connect the trolley body with the positioning rod on the furnace body.

[0077] 2) Slag Removal Process: Slag removal operates in two modes: rotary impact slag removal and circumferential grinding slag removal, with a total of four grinding heads. In rotary impact slag removal mode, a rotary impact grinding head is used. The vehicle-mounted positioning system aligns the grinding head with the center of the air vent. The feed motor drives the drill rod to feed, while the drill head rotates and cleans the slag via a drive motor. When encountering hard, difficult-to-clean slag, the pneumatic impactor activates, using the drill rod to drive the grinding head to impact the slag. In circumferential grinding slag removal mode, three different grinding heads are used depending on the slag condition. The grinding head can perform three-directional movements: first, feeding via the feed motor; second, rotating the inner drive rod via the inner drive rod motor, causing the grinding head to move circumferentially around the air vent for 360° slag removal; and third, rotating the outer drive rod via the outer drive rod motor, which in turn drives the grinding head to rotate for point grinding.

[0078] This invention designs four types of grinding heads, enabling rapid on-site replacement. Three types of circumferential grinding heads are positioned and fixed using a conical surface and flat teeth, with torque transmitted through the engagement of a planar raised flange. The rotary impact grinding head is fixed using keys and bolts. Different grinding heads can be selected on-site for cleaning residue based on its condition.

Claims

1. A multifunctional slag and iron cleaning device for the inside of an air vent, characterized in that, include: A mobile vehicle includes a vehicle body and wheels underneath it; a fixed platform protrudes from the rear of the vehicle body. The mobile platform includes an installation platform and a linkage mechanism and a height-adjusting electric push rod below it. The linkage mechanism consists of two front connecting rods and two rear connecting rods located on the front and rear sides of the bottom of the installation platform, and a first and second upper connecting shaft and a first and second lower connecting shaft respectively connecting the two front connecting rods and the two rear connecting rods. The two ends of the first lower connecting shaft at the lower part of the two front connecting rods are movably connected to the front of the mobile trolley body. The two ends of the second lower connecting shaft at the lower part of the two rear connecting rods are movably connected to the rear of the trolley body. The cylinder of the height-adjusting electric push rod is located on a fixed platform at the rear of the mobile trolley body, and its piston rod end is connected to the middle of the second upper connecting shaft. Slag and iron cleaning organizations include: The mounting base is located at the front of the top surface of the mounting platform. It is a shell structure with a cavity and a central through hole that runs through the left and right sides in the axial center. An inner drive rod, the rear of which passes through the central through hole of the mounting base, is provided with an inner drive gear and bearings on both sides of the inner drive rod located inside the mounting base; An inner drive shaft, one end of which is disposed in the mounting base and arranged parallel to one side of the inner drive rod, is provided with an inner drive transmission wheel that meshes with the inner drive gear and bearings on both sides thereof. An internal drive motor, the output end of which is connected to the other end of the internal drive shaft via a coupling; The outer drive rod is a tube that is sleeved outside the inner drive rod. The rear part of the outer drive rod extends into the mounting base. Rolling bearings are provided between the front and rear ends of the outer drive rod and the inner drive rod. An external drive gear is mounted on an external drive rod located within the mounting base; An external drive shaft, one end of which is disposed in the mounting base and arranged parallel to the other side of the internal drive rod, is provided with an external drive transmission wheel that meshes with the external drive gear and bearings on both sides thereof. An external drive motor, the output end of which is connected to the other end of the external drive shaft via a coupling; A pneumatic strike machine is located at the rear end of the inner drive rod; At least one replaceable slag removal component is disposed at the front end of the inner drive rod and / or the front end of the outer drive rod.

2. The multifunctional slag and iron cleaning device inside the air vent as described in claim 1, characterized in that, It also features an electric push rod for angle adjustment; A fixed seat is provided on each of the two rear sides of the upper end face of the vehicle body. A guide groove is provided on the fixed seat along the length direction. The two ends of the second lower connecting shaft of the two rear connecting rods pass through the guide groove respectively. The cylinder of the angle-adjusting electric push rod is located at the center of the upper end face of the walkable trolley, and the end of its piston rod is connected to the middle of the second lower connecting shaft.

3. The multifunctional slag and iron cleaning device inside the air vent as described in claim 1 or 2, characterized in that, It also includes a vehicle body locking mechanism, comprising: The connecting plate has an L-shaped structure, with one end pivotally connected to the center of the front of the walkable vehicle body; A locking cylinder has its cylinder body tilted and fixed to the side of the connecting plate at the center of the front part of the walkable trolley body, and its piston rod end is connected to the bent part of the connecting plate. The locking rod has its rear end connected to the connecting plate and its front end provided with a hook for fastening.

4. The multifunctional slag and iron cleaning device inside the air vent as described in claim 1 or 2, characterized in that, The installation platform is provided with two parallel slide rails and a slider on them. The mounting seat of the slag and iron cleaning mechanism is set on the slider. A lead screw is provided in the center of the installation platform along the axial direction. A screw hole for connecting the lead screw is provided in the middle of the bottom of the mounting seat. A propulsion motor is set at the rear end of the center of the top surface of the installation platform. Its output end is connected to the rear end of the lead screw.

5. The multifunctional slag and iron cleaning device inside the air vent as described in claim 3, characterized in that, The installation platform is provided with two parallel slide rails and a slider on them. The mounting seat of the slag and iron cleaning mechanism is set on the slider. A lead screw is provided in the center of the installation platform along the axial direction. A screw hole for connecting the lead screw is provided in the middle of the bottom of the mounting seat. A propulsion motor is set at the rear end of the center of the top surface of the installation platform. Its output end is connected to the rear end of the lead screw.

6. The multifunctional slag and iron cleaning device inside the air vent as described in claim 1, characterized in that, Replaceable slag removal components include: The positioning seat has upper and lower channels arranged in parallel. It is sleeved on the front end of the inner drive rod that extends out of the front end of the outer drive rod through the lower channel and locked by a nut. A drive gear is sleeved on the front end of the outer drive rod; The drive connecting sleeve passes through the channel on the positioning seat in the middle, and its rear end is provided with a transmission gear that meshes with the drive gear; A replaceable grinding head is located at the front end of the drive connection sleeve.

7. The multifunctional slag and iron cleaning device inside the air vent as described in claim 1, characterized in that, The replaceable slag removal part is a conical grinding head, a flat-bottomed grinding head, or a drum-shaped grinding head.

8. The multifunctional slag and iron cleaning device inside the air vent as described in claim 6, characterized in that, The replaceable grinding head includes a support rod and a grinding head at its front end, with the support rod inserted into the front end of the drive connecting sleeve.

9. The multifunctional slag and iron cleaning device inside the air vent as described in claim 8, characterized in that, The grinding head is a conical grinding head, a flat-bottomed grinding head, or a drum-shaped grinding head.

10. The multifunctional slag and iron cleaning device inside the air vent as described in claim 8, characterized in that, The rear of the support rod of the replaceable grinding head is provided with a first connecting flange, and correspondingly, the front end of the drive connecting sleeve is provided with a second connecting flange that cooperates with the first connecting flange, and the rear of the support rod is inserted into the front of the drive connecting sleeve.

11. The multifunctional slag and iron cleaning device inside the air vent as described in claim 10, characterized in that, The mating surfaces of the first and second connecting flanges are nested concave-convex structures.

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