Mud poking equipment for tuyere sleeve of blast furnace

Abstract

The invention relates to the technical field of blast-furnace tuyere mud removing equipment, and particularly discloses blast-furnace tuyere sleeve mud poking equipment which comprises a rack, power wheels are arranged at the four corners of the bottom of the rack, a bracket is arranged above the rack, and an impactor is movably arranged at one end of the bracket; the impacter is driven by a thrust cylinder arranged on the bracket to move, one end of the impacter is connected with a drill rod, and the other end of the impacter is communicated with an air inlet pipe. The rack is remotely controlled to move to the right front of a blast-furnace tuyere, the tail end of a drill rod which is arranged in the blast-furnace tuyere in advance is inserted into a punching and drilling connector at one end of the impactor, the thrust air cylinder is controlled to drive the piston shaft to push the guide device to move, supporting force is provided for propelling of the impactor and the drill rod, and meanwhile high-pressure gas is introduced into the impactor through the gas inlet pipe; and the drill rod reciprocates at a high speed to impact blocking mud in the tuyere of the blast furnace, so that the blocking mud is quickly broken through, the working efficiency is improved, and safety accidents possibly caused by manual operation are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of blast furnace tuyere mud cleaning equipment, and in particular to a mud-poking equipment for a blast furnace tuyere sleeve. Background Art

[0002] The blast furnace tuyere sleeve is an important component of blast furnace ironmaking equipment. It is mainly used in the air supply system of the blast furnace to ensure that the hot air can smoothly enter the blast furnace for smelting. When the blast furnace tuyere sleeve is used for a long time, it is necessary to poke the sealing mud of the blast furnace tuyere sleeve to avoid the formation of sealing mud around the blast furnace tuyere sleeve, which will hinder the normal circulation of hot air and affect the smelting efficiency and effect of the blast furnace.

[0003] However, the existing blast furnace tuyere sleeve is generally poked open by manually holding a drill rod, which makes the mud poking efficiency low and may cause safety accidents due to manual operation. In addition, since the size of the drill rod is much smaller than the inner diameter of the blast furnace tuyere, if manual operation is not adopted, conventional impact equipment is difficult to poke open the mud sealing inside the blast furnace tuyere sleeve, resulting in incomplete mud poking of the blast furnace tuyere. Summary of the invention

[0004] The present application proposes a mud-poking device for a blast furnace tuyere sleeve, which has the advantages of high efficiency and more thorough mud-poking for the blast furnace tuyere, and is used to solve the problems of low efficiency of manual mud-poking and incomplete mud-poking by conventional equipment during the clearing process of the mud seal in the existing blast furnace tuyere sleeve.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a mud-poking device for a blast furnace tuyere sleeve, comprising a frame, wherein the four corners of the bottom of the frame are provided with power wheels, a bracket is arranged above the frame, an impactor is movably arranged at one end of the bracket, and the impactor is driven to move by a thrust cylinder arranged on the bracket, one end of the impactor is connected to a drill rod, and the other end of the impactor is connected to an air intake pipe.

[0006] When in use, the remote-controlled frame moves to the front of the blast furnace tuyere, and the thrust cylinder provides support for the propulsion of the impactor and the drill rod. At the same time, the high-pressure gas introduced into the impactor through the air inlet pipe makes the drill rod move back and forth at high speed to impact the mud blockage in the blast furnace tuyere.

[0007] Furthermore, a group of pillars are fixedly installed on both sides of the top of the frame, the number of pillars in a group is two, and the two pillars are arranged at both ends of the frame, the top of each pillar is fixedly connected to a rubber shock absorber, and the tops of the four rubber shock absorbers are fixedly connected to the bottom of the bracket.

[0008] Furthermore, a universal wheel is provided in the middle of the bottom end of the frame, and two guide posts are fixedly installed on the top of the bracket. Guide devices are slidably sleeved on the two guide posts respectively, and the two guide devices are fixedly connected to the impactor.

[0009] Furthermore, the number of the thrust cylinders is set to two, the two thrust cylinders are respectively arranged to be staggered with the two guide pillars, and the piston shafts of the two thrust cylinders are respectively fixedly connected to the two guide devices.

[0010] Furthermore, ground brakes are provided at the four corners of the bottom of the frame, and the ground brakes are arranged close to the power wheels.

[0011] Furthermore, one end of the impactor away from the air inlet is fixedly connected to a positioning tube, a universal transmission device is provided inside the positioning tube, and the drill rod and the impactor are transmission-connected via the universal transmission device in the positioning tube.

[0012] Further, the universal transmission device includes a moving tube movably sleeved in the positioning tube, a front joint is fixedly installed on one end of the front joint facing the impactor, and a guide sleeve is fixedly installed on the end of the front joint away from the moving tube, one end of the guide sleeve protrudes relative to the front joint and is movably connected to the middle of the piston in the impactor, an exhaust groove connected to the inside of the impactor is provided on the front joint, and a rotating connecting piece is connected to the middle of the end of the front joint away from the guide sleeve, and the guide sleeve and the rotating connecting piece are connected by a plane bearing, the end of the rotating connecting piece away from the front joint is rotatably connected to a linkage rod, the end of the linkage rod away from the rotating connecting piece is connected to the drill rod, and two vortex springs are fixedly installed on the outer side of the linkage rod, and the outer ends of the two vortex springs are fixedly connected to the inner wall of the moving tube.

[0013] Furthermore, the outer cross-section of the linkage rod is set to a hexagon, the inner cross-section of the moving tube is set to a corresponding hexagon, and a limiting device is respectively provided between the six outer side surfaces of the moving tube and the six corresponding inner side surfaces of the moving tube.

[0014] Furthermore, the limiting device is arranged between two spiral springs, and the limiting device includes a limiting tube fixedly installed on the inner side of the movable tube, the internal movable sleeve of the limiting tube is provided with a limiting piston, one end of the limiting piston is fixedly connected to a linkage shaft, one end of the linkage shaft is rotatably connected to the outer side of the linkage rod, the end of the limiting tube away from the linkage shaft is connected to a throttling tube, the throttling tubes in the six limiting devices are connected to an oil guide pipe, one side of the oil guide pipe is connected to an oil delivery pipe, and a valve is provided on the oil delivery pipe.

[0015] Furthermore, a rubber bellows is provided at one end of the positioning tube away from the impactor, a sealing sleeve is provided on the inner side of the rubber bellows, and the sealing sleeve is sealed and installed with the drill rod.

[0016] Beneficial effects of the present invention:

[0017] 1. The present application provides a mud-poking device for a blast furnace tuyere sleeve. The device moves a frame to the front of the blast furnace tuyere through remote control, inserts the tail end of a drill rod pre-inserted into the blast furnace tuyere into the punching and drilling interface at one end of the impactor, controls the thrust cylinder to drive the piston shaft to push the guide device to move, and provides support for the propulsion of the impactor and the drill rod. At the same time, an air inlet pipe is used to introduce high-pressure gas into the impactor, so that the drill rod moves back and forth at a high speed to impact the mud blockage in the blast furnace tuyere, quickly break through the mud seal, replace manual poking, improve work efficiency, and avoid safety accidents that may be caused by manual operation.

[0018] 2. The present application provides a mud-poking device for a blast furnace tuyere sleeve, which is connected by a universal transmission device in a positioning tube between a drill rod and an impactor. When the blast furnace tuyere is poked with mud, the valve is controlled to open, and the elastic force in the centripetal direction of the vortex spring is used in combination with the throttling effect of the throttling tube and the rotating connection design between one end of the linkage rod and the rotating connector. The front joint can drive the linkage rod and the drill rod to move back and forth at high frequency for mud poking, and the drill rod can be deflected in any direction to perform mud poking on the inner wall of the blast furnace tuyere, so that the mud poking of the blast furnace tuyere is more thorough, and the actual use is convenient for clearing blockages in some blast furnace tuyere caused by a slightly tilted downward channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0020] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 It is a schematic diagram of the connection structure between the universal drill rod and the impactor in the second embodiment;

[0024] Figure 4 for Figure 3 Side view of the universal joint;

[0025] Figure 5 for Figure 3 A schematic diagram of a cross-sectional structure of a central universal transmission device;

[0026] Figure 6 for Figure 5 Schematic diagram of the structure of the middle limit device.

[0027] In the figure:

[0028] 1. Frame; 2. Power wheel; 3. Universal wheel; 4. Pillar; 5. Rubber shock absorber; 6. Bracket; 7. Guide column; 8. Guide device; 9. Impactor; 10. Drill rod; 11. Intake pipe; 12. Thrust cylinder; 13. Floor brake; 14. Positioning tube; 15. Universal transmission device; 151. Moving tube; 152. Front joint; 1521. Exhaust groove; 153. Guide sleeve; 154. Rotating connector; 155. Linkage rod; 156. Vortex spring; 16. Rubber bellows; 17. Sealing sleeve; 18. Limiting device; 181. Limiting tube; 182. Limiting piston; 183. Linkage shaft; 184. Throttle tube; 19. Oil guide pipe; 20. Oil pipeline; 21. Valve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Embodiment 1

[0031] See also Figure 1-Figure 2 A mud-pugging device for a blast furnace tuyere sleeve comprises a frame 1, four corners of the bottom of the frame 1 are provided with power wheels 2, and the power wheels 2 are powered by a vehicle-mounted lithium battery (not shown in the figure), and are connected to a controller through a signal, so that the movement and steering of the power wheels 2 can be remotely controlled, a universal wheel 3 is provided in the middle of the bottom end of the frame 1, a group of pillars 4 are fixedly installed on both sides of the top of the frame 1, the number of a group of pillars 4 is two, and the two pillars 4 are respectively arranged at the two ends of the frame 1, and a rubber shock absorber 5 is fixedly connected to the top of each pillar 4, and a bracket 6 is fixedly connected to the top of the four rubber shock absorbers 5.

[0032] Two guide pillars 7 are fixedly installed on the top of the bracket 6, and the two guide pillars 7 are close to the left side of the bracket 6. Guide devices 8 are slidably sleeved on the two guide pillars 7, and an impactor 9 is fixedly installed between the two guide devices 8. One end of the impactor 9 is connected to a drill rod 10, and the other end of the impactor 9 is provided with an air intake pipe 11. Compressed air is provided to the impactor 9 through the air intake pipe 11. Using the compressed air as the power, the end of the drill rod 10 away from the impactor 9 forms a high-frequency impact on the mud blocking the blast furnace tuyere, quickly breaking through the mud, replacing manual poking, improving work efficiency, and avoiding safety accidents that may be caused by manual operation. Four rubber shock absorbers 5 are arranged between the frame 1 and the bracket 6 to reduce shock when poking mud at the blast furnace tuyere.

[0033] Two thrust cylinders 12 located on one side of the guide column 7 are also fixedly mounted on the bracket 6, and the two thrust cylinders 12 are staggered with the two guide columns 7 respectively. The piston shafts of the two thrust cylinders 12 are fixedly connected with the two guide devices 8 respectively. The thrust cylinders 12 drive the piston shafts to push the guide devices 8 to move along the guide columns 7, thereby controlling the impactor 9 to drive the drill rod 10 to move. The air inlet pipe 11 is designed as a hose and provides sufficient length for the movement of the impactor 9. The two thrust cylinders 12 provide propulsion support force for the impactor 9, and cooperate with the impact of the impactor 9 itself to further improve the efficiency of poking open the air vent and blocking the mud.

[0034] The four corners of the bottom of the frame 1 are provided with a ground brake 13, and the ground brake 13 is arranged close to the power wheel 2. Through the setting of the ground brake 13, when the drill rod 10 is controlled to poke mud at the blast furnace tuyere, the overall stability of the frame 1 is enhanced, and it can also cope with uneven ground.

[0035] When in use, the remote control frame 1 is moved to the front of the blast furnace tuyere, and the tail end of the drill rod 10 pre-inserted into the blast furnace tuyere is inserted into the punching and drilling interface at one end of the impactor 9. The thrust cylinder 12 is controlled to drive the piston shaft to push the guide device 8 to move, providing support for the propulsion of the impactor 9 and the drill rod 10. At the same time, high-pressure gas is introduced into the impactor 9 through the air inlet pipe 11, so that the drill rod 10 moves back and forth at a high speed to impact the mud blockage in the blast furnace tuyere. After the mud blockage in the blast furnace tuyere is poked open, the control frame 1 is kept away from the blast furnace tuyere, and the drill rod 10 is removed.

[0036] Embodiment 2

[0037] See also Figure 3-Figure 6 On the basis of the first embodiment, the difference from the first embodiment is that the drill rod 10 is not directly connected to one end of the piston in the impactor 9, and the end of the impactor 9 away from the air inlet is fixedly connected to a positioning tube 14, and a universal transmission device 15 is arranged inside the positioning tube 14. The drill rod 10 and the impactor 9 are connected by the universal transmission device 15 in the positioning tube 14, so that during the mud poking work of the drill rod 10 on the blast furnace tuyere, the end of the drill rod 10 that pokes the mud can be controlled to deflect, so that the internal mud sealing and clearing of the blast furnace tuyere can be more thorough.

[0038] The universal transmission device 15 includes a moving tube 151 movably sleeved in the positioning tube 14, a front joint 152 is fixedly installed at one end of the front joint 152 facing the impactor 9, a guide sleeve 153 is fixedly installed at one end of the front joint 152 away from the moving tube 151, one end of the guide sleeve 153 protrudes relative to the front joint 152 and is movably connected to the middle of the piston in the impactor 9, an exhaust groove 1521 connected to the inside of the impactor 9 is opened on the front joint 152, a rotating connecting piece 154 is connected to the middle of the end of the front joint 152 away from the guide sleeve 153, and the guide sleeve 153 and the rotating connecting piece 154 are connected by a plane bearing, so that the rotating connecting piece 154 can rotate relative to the guide sleeve 153, and the end of the rotating connecting piece 154 away from the front joint 152 is rotatably connected to a linkage rod 155, and the linkage rod 15 One end away from the rotating connection member 154 is connected to the drill rod 10, and two vortex springs 156 are fixedly installed on the outer side of the linkage rod 155. One end of the outer side of the two vortex springs 156 is fixedly connected to the inner wall of the moving tube 151. The linkage rod 155 is supported by the two vortex springs 156, and one end of the linkage rod 155 is elastically connected to the rotating connection member 154. Without affecting the reciprocating movement of the piston in the impactor 9 to impact the front joint 152, the front joint 152 can drive the linkage rod 155 and the drill rod 10 to reciprocate at high frequency to poke mud. In addition, the drill rod 10 can be deflected in any direction to poke mud on the inner wall of the blast furnace tuyere, so that the blast furnace tuyere can poke mud more thoroughly, and can be used for the clearing work of the blast furnace tuyere when the passage is slightly tilted downward, which is convenient for actual use.

[0039] A rubber bellows 16 is provided at one end of the positioning tube 14 away from the impactor 9, and a sealing sleeve 17 is provided on the inner side of the rubber bellows 16. The sealing sleeve 17 is sealed and installed with the drill rod 10. When it is necessary to use the air pressure in the impactor 9, the middle part of the drill rod 10 is designed to be connected to the inner cavity of the positioning tube 14. The gas entering the positioning tube 14 enters through the drill rod 10 and is ejected from one end of the drill rod 10 for poking mud, thereby further providing a mud poking effect for the blast furnace tuyere.

[0040] The outer cross section of the linkage rod 155 is set to a hexagon, and the inner cross section of the moving tube 151 is set to a corresponding hexagon. A limit device 18 is respectively provided between the six outer side surfaces of the moving tube 151 and the six corresponding inner side surfaces of the moving tube 151. The limit device 18 is provided between the two vortex springs 156. The limit device 18 includes a limit tube 181 fixedly installed on the inner side of the moving tube 151. The inner movable sleeve of the limit tube 181 is provided with a limit piston 182. The limit piston 182 One end of the limiting tube 181 is fixedly connected to a linkage shaft 183, one end of the linkage shaft 183 is rotatably connected to the outer side of the linkage rod 155, and the end of the limiting tube 181 away from the linkage shaft 183 is connected to a throttling tube 184. The throttling tubes 184 in the six limiting devices 18 are connected to an oil guide pipe 19, and one side of the oil guide pipe 19 is connected to an oil delivery pipe 20, and pressure oil can be injected into the interior of each limiting device 18 through the oil delivery pipe 20. A valve 21 is provided on the oil delivery pipe 20 to utilize the throttling effect of the throttling tube 184.

[0041] When the blast furnace tuyere is being poked with mud, the control valve 21 is opened, and the elastic force in the centripetal direction of the vortex spring 156 is utilized in combination with the throttling effect of the throttling tube 184 and the rotating connection design between one end of the linkage rod 155 and the rotating connector 154, so that the drill rod 10 can be offset to an inclined state when poking with mud, while avoiding the situation that the elastic force of the linkage rod 155 alone is insufficient to clean the harder sealing mud. The linkage rod 155 here is more of a restoring force for the linkage rod 155, that is, after each stroke, the elastic force of the vortex spring 156 makes the linkage rod 155 always in a trend of moving toward the center line of the moving tube 151, thereby maintaining the mud poking state, so as to clean the sealing mud in the blast furnace tuyere more thoroughly, and can adapt to the inclined blast furnace tuyere. When it is also necessary to control the drill rod 10 to be able to rotate during the mud poking period, the drill rod 10 and the linkage rod 155 can be connected through a bearing, that is, the drill rod 10 can rotate relative to the linkage rod 155.

Claims

1. A mud-poking device for a blast furnace tuyere sleeve, comprising a frame (1), characterized in that: Power wheels (2) are provided at the four corners of the bottom of the frame (1), a bracket (6) is provided above the frame (1), an impactor (9) is movably provided at one end of the bracket (6), the impactor (9) is driven to move by a thrust cylinder (12) provided on the bracket (6), one end of the impactor (9) is connected to a drill rod (10), and the other end of the impactor (9) is connected to an air intake pipe (11); When in use, the remote control frame (1) moves to the front of the blast furnace tuyere, and the thrust cylinder (12) provides support for the propulsion of the impactor (9) and the drill rod (10). At the same time, the high-pressure gas introduced into the impactor (9) through the air inlet pipe (11) causes the drill rod (10) to reciprocate at high speed to impact the mud blockage in the blast furnace tuyere.

2. The mud blocking device for blast furnace tuyere sleeve according to claim 1, characterized in that: A group of pillars (4) are fixedly installed on both sides of the top of the frame (1), the number of each group of pillars (4) is two, and the two pillars (4) are arranged at both ends of the frame (1), the top of each pillar (4) is fixedly connected to a rubber shock absorber (5), and the tops of the four rubber shock absorbers (5) are fixedly connected to the bottom of the bracket (6).

3. The mud blocking device for blast furnace tuyere sleeve according to claim 1, characterized in that: A universal wheel (3) is provided in the middle of the bottom end of the frame (1), and two guide pillars (7) are fixedly installed on the top of the bracket (6). Guide devices (8) are slidably sleeved on the two guide pillars (7), and the two guide devices (8) are fixedly connected to the impactor (9).

4. The mud blocking device for blast furnace tuyere sleeve according to claim 3, characterized in that: The number of the thrust cylinders (12) is set to two, the two thrust cylinders (12) are respectively arranged to be staggered with the two guide pillars (7), and the piston shafts of the two thrust cylinders (12) are respectively fixedly connected with the two guide devices (8).

5. The mud blocking device for blast furnace tuyere sleeve according to claim 1, characterized in that: The four corners of the bottom of the frame (1) are all provided with floor brakes (13), and the floor brakes (13) are arranged close to the power wheel (2).

6. The mud blocking device for blast furnace tuyere sleeve according to claim 1, characterized in that: One end of the impactor (9) away from the air inlet is fixedly connected to a positioning tube (14), a universal transmission device (15) is provided inside the positioning tube (14), and the drill rod (10) and the impactor (9) are transmission-connected via the universal transmission device (15) inside the positioning tube (14).

7. The mud blocking device for blast furnace tuyere sleeve according to claim 6, characterized in that: The universal transmission device (15) comprises a moving tube (151) movably sleeved in a positioning tube (14); the front joint (152) is fixedly mounted on one end of the front joint (152) facing the impactor (9); and a guide sleeve (153) is fixedly mounted on one end of the front joint (152) away from the moving tube (151); one end of the guide sleeve (153) protrudes relative to the front joint (152) and is movably connected to the middle of a piston in the impactor (9); an exhaust groove (1521) communicating with the interior of the impactor (9) is provided on the front joint (152); and the front joint (152) A rotating connecting piece (154) is connected to the middle of one end away from the guide sleeve (153), and the guide sleeve (153) and the rotating connecting piece (154) are connected via a plane bearing. One end of the rotating connecting piece (154) away from the front joint (152) is rotatably connected to a linkage rod (155), and one end of the linkage rod (155) away from the rotating connecting piece (154) is connected to the drill rod (10), and two spiral springs (156) are fixedly installed on the outer side of the linkage rod (155), and one end of the outer side of the two spiral springs (156) is fixedly connected to the inner wall of the moving tube (151).

8. The mud blocking device for blast furnace tuyere sleeve according to claim 7, characterized in that: The outer cross-section of the linkage rod (155) is set to be a hexagon, the inner cross-section of the moving tube (151) is set to be a corresponding hexagon, and a limiting device (18) is respectively provided between the six outer side surfaces of the moving tube (151) and the six corresponding inner side surfaces of the moving tube (151).

9. The mud blocking device for blast furnace tuyere sleeve according to claim 7, characterized in that: The limiting device (18) is arranged between the two vortex springs (156), and comprises a limiting tube (181) fixedly mounted on the inner side of the moving tube (151). A limiting piston (182) is movably mounted inside the limiting tube (181). One end of the limiting piston (182) is fixedly connected to a linkage shaft (183). One end of the linkage shaft (183) is rotatably connected to the outer side of the linkage rod (155). One end of the limiting tube (181) away from the linkage shaft (183) is connected to a throttle tube (184). The throttle tubes (184) in the six limiting devices (18) are connected to an oil guide tube (19). One side of the oil guide tube (19) is connected to an oil delivery tube (20). A valve (21) is provided on the oil delivery tube (20).

10. The mud blocking device for blast furnace tuyere sleeve according to claim 6, characterized in that: A rubber bellows (16) is provided at one end of the positioning tube (14) away from the impactor (9), a sealing sleeve (17) is provided on the inner side of the rubber bellows (16), and the sealing sleeve (17) is sealed and installed with the drill rod (10).

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