Ladle baking machine with horizontal lifting cover

Abstract

The present invention provides a horizontally-lifting ladle roaster, comprising: a frame; a central rotating shaft, the bottom end of which is rotatably arranged on the frame; a cantilever, one end of which is fixedly connected to the central rotating shaft, and a portion of the cantilever away from the central rotating shaft is provided with a ladle cover; a driving mechanism, which is transmission-connected to the central rotating shaft to enable the central rotating shaft to rotate along a fixed axis; a plurality of gas pipelines, at least one of which comprises a fixed gas pipeline and a movable gas pipeline that are airtightly connected, the fixed gas pipeline remains fixed relative to the frame, the movable gas pipeline swings synchronously with the cantilever, and the rotation center line of the movable gas pipeline relative to the fixed gas pipeline coincides with the axis of the central rotating shaft. The horizontally-lifting ladle roaster of the present invention can prevent at least one gas pipeline from bending due to the swing of the cantilever, so that the ladle cover is away from or close to the ladle mouth of the ladle on a horizontal plane, does not need to do work on its own gravity, operates smoothly, is subjected to a small load, and has a long service life.

Description

Technical Field

[0001] The invention relates to the technical field of steelmaking production, in particular to a ladle baking device with a horizontally-lifting ladle cover. Background Art

[0002] At present, as the country's requirements for environmental protection become increasingly stringent, energy-saving, emission-reduction and environmentally friendly products have become a trend in large steel mills. In the process of molten steel transportation, the iron ladle, steel ladle and intermediate ladle need to implement efficient and clean combustion technology - "regenerative combustion technology", which has now shown a rapid development momentum.

[0003] At present, regenerative ladle roasters have become popular in large steel plants. There are two installation methods: vertical and horizontal. Since vertical regenerative ladle roasters have more pipelines, the main movement form of vertical regenerative ladle roasters is flipping movement, that is, the equipment drives the ladle cover to flip upwards.

[0004] The above-mentioned vertical regenerative ladle roaster has the following problems in its cover flap movement:

[0005] 1. There are strict requirements on the longitudinal layout space and height of the site: it is easy to collide with the vehicle during the process of turning up the cover; in the case of a smaller longitudinal layout site, the turning up of the cover will interfere with the steel structure columns and beams of the factory building;

[0006] 2. The dynamic load on the ground is large, especially on the steel structure platform, it is easy to shake;

[0007] 3. Mechanical limiters are more likely to deform. If the drive device breaks, the impact force and speed of the equipment when it falls are fast, and the mechanical limiter cannot bear the impact load of the equipment, which is prone to safety accidents;

[0008] 4. When the equipment is powered off for maintenance, the cover is restrained only by mechanical limiters, which poses a safety hazard. Summary of the invention

[0009] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the present invention is to provide a horizontally-lifting ladle baking device, which can prevent at least one gas pipeline from bending due to the swing of the cantilever, so that the ladle cover is away from or close to the ladle mouth on the horizontal plane, does not need to do work on its own gravity, runs smoothly, is subject to small load, and has a long service life.

[0010] In order to solve the above technical problems, the present invention provides a ladle roaster with a horizontally-lifting cover, comprising:

[0011] frame;

[0012] A vertically arranged central rotating shaft, the bottom end of which is rotatably arranged on the frame;

[0013] A horizontally arranged cantilever, one end of which is fixedly connected to the central rotating shaft, a ladle cover is provided at the part of the cantilever away from the central rotating shaft, and the movement track of the ladle cover passes through the ladle opening;

[0014] A driving mechanism, the driving mechanism is drivingly connected to the central rotating shaft to enable the central rotating shaft to rotate along a fixed axis;

[0015] There are multiple gas pipelines, at least one of which includes a fixed gas pipeline and a movable gas pipeline that are airtightly connected. The fixed gas pipeline remains fixed relative to the frame, and the movable gas pipeline swings synchronously with the cantilever. The rotation center line of the movable gas pipeline relative to the fixed gas pipeline coincides with the axis of the central rotating shaft.

[0016] Preferably, the movable gas pipe is connected to the fixed gas pipe via a rotary joint.

[0017] Preferably, the rotary joint comprises a movable pipe fitting detachably connected to the movable gas pipe, a fixed pipe fitting detachably connected to the fixed gas pipe, and a connecting pipe sleeve fixedly connected to the movable pipe fitting and rotatably sleeved on the fixed pipe fitting.

[0018] Preferably, a first keyway is provided on the outer circumferential wall of the fixed pipe fitting, and a second keyway is provided on the inner circumferential wall of the connecting sleeve near its own end. The second keyway is axially penetrated on one side and radially aligned with the first keyway. The first keyway and the second keyway jointly accommodate a key, and an anti-slip component is provided at the end of the connecting sleeve for abutting and cooperating with the key.

[0019] Preferably, a sealing ring and a wear-resistant ring are embedded on the outer peripheral wall of the fixed pipe, and both the sealing ring and the wear-resistant ring are slidably matched with the inner peripheral wall of the connecting pipe sleeve.

[0020] Preferably, the gas pipeline includes a fuel gas input pipeline, an oxidant input pipeline and an exhaust gas exhaust pipeline, the fuel gas input pipeline is composed of the fixed gas pipeline and the movable gas pipeline, and the oxidant input pipeline and the exhaust gas exhaust pipeline swing synchronously with the cantilever.

[0021] Preferably, a mounting frame is provided on the central rotating shaft, and the blower provided on the oxidant input pipeline and the induced draft fan provided on the exhaust gas discharge pipeline are both provided on the mounting frame.

[0022] Preferably, a cantilever connecting shaft is fixedly penetrated through the top end of the central rotating shaft, and one end of the cantilever is fixedly sleeved on the cantilever connecting shaft.

[0023] Preferably, the horizontally-lifting ladle roaster further comprises a slewing bearing seat, and the slewing bearing seat comprises a base arranged on the frame and a bearing arranged between the base and the central rotating shaft.

[0024] Preferably, the driving mechanism includes a telescope, a swing arm, and a swing limiter, wherein one end of the telescope in the telescopic direction is hinged to the frame, one end of the swing arm is fixedly connected to the central rotating shaft and the other end is hinged to the other end of the telescope in the telescopic direction, and the swing limiter is arranged on the frame and located at the extreme swing position of the swing arm.

[0025] As described above, the ladle cover horizontally-lifting ladle roaster of the present invention has the following beneficial effects: in the present invention, the part of the cantilever away from the central rotating shaft is provided with a ladle cover, and the movement trajectory of the ladle cover passes through the ladle mouth of the ladle. At the same time, at least one gas pipeline includes a fixed gas pipeline and a movable gas pipeline that are airtightly connected. The fixed gas pipeline remains fixed relative to the frame, and the movable gas pipeline swings synchronously with the cantilever. The rotation center line of the movable gas pipeline relative to the fixed gas pipeline coincides with the axis of the central rotating shaft. When the driving mechanism drives the central rotating shaft to rotate in a fixed axis in a preset rotation direction, the cantilever, the movable gas pipeline and the ladle cover all swing synchronously with the axis of the central rotating shaft as the swing center line, thereby avoiding at least one gas pipeline from bending due to the swing of the cantilever, and making the ladle cover away from or close to the ladle mouth of the ladle on the horizontal plane. The horizontally-lifting ladle roaster of the present invention can prevent at least one gas pipeline from bending due to cantilever swing, so that the ladle cover is away from or close to the ladle mouth on the horizontal plane, does not need to do work on its own gravity, runs smoothly, is subject to small load, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure shows a first use state of the horizontal lifting ladle roaster of the present invention;

[0027] Figure 2 The figure shows a second use state of the horizontal lifting ladle roaster of the present invention;

[0028] Figure 3 Display as Figure 2 A magnified view of part A;

[0029] Figure 4 Shown is a cross-sectional view of a swivel joint;

[0030] Figure 5 The display is a three-dimensional view of the frame, the drive mechanism and the central rotating shaft;

[0031] Figure 6 Shown is a top view of the central shaft, gas pipeline and package cover;

[0032] Figure 7 Display as Figure 6 Cross-section along line BB.

[0033] Component number description

[0034] 1 Rack

[0035] 2 Center axis

[0036] 21 Mounting bracket

[0037] 22 Cantilever connecting shaft

[0038] 23 Solid shaft

[0039] 24 Hollow shaft

[0040] 3 Cantilever

[0041] 4. Driving mechanism

[0042] 41 Retractor

[0043] 42 Swing arm

[0044] 43 Swing limiter

[0045] 5 Gas pipeline

[0046] 51 Fixed gas pipe

[0047] 52 movable gas pipe

[0048] 53 Gas input pipeline

[0049] 54 Oxidant input pipeline

[0050] 541 Blower

[0051] 55 Exhaust gas discharge pipe

[0052] 551 induced draft fan

[0053] 6. Cover

[0054] 7 Ladle

[0055] 8 Rotary joint

[0056] 81 movable pipe fittings

[0057] 82 Fixed pipe fittings

[0058] 83 Connecting sleeve

[0059] 84 Card Key

[0060] 85 Anti-drop parts

[0061] 86 Sealing ring

[0062] 87 Wear ring

[0063] 9 Slewing bearing seat

[0064] 91 Base

[0065] 92 Bearings DETAILED DESCRIPTION

[0066] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0067] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0068] like Figure 1 , Figure 2 as well as Figure 3 As shown, the present invention provides a ladle roaster with a horizontally-lifting cover, comprising:

[0069] Rack 1;

[0070] A vertically arranged central rotating shaft 2, the bottom end of which is rotatably disposed on the frame 1;

[0071] A cantilever 3 is arranged horizontally, one end of the cantilever 3 is fixedly connected to the central rotating shaft 2, and a portion of the cantilever 3 away from the central rotating shaft 2 is provided with a ladle cover 6 (the ladle cover 6 is used to cover the ladle opening of the ladle 7 during the baking process to prevent the heat in the ladle 7 from being lost), and the movement trajectory of the ladle cover 6 passes through the ladle opening of the ladle 7 (a container for transporting molten steel);

[0072] A driving mechanism 4, the driving mechanism 4 is in driving connection with the central rotating shaft 2 to enable the central rotating shaft 2 to rotate along a fixed axis;

[0073] There are multiple gas pipelines 5, at least one of which includes a fixed gas pipeline 51 and a movable gas pipeline 52 that are airtightly connected. The fixed gas pipeline 51 remains fixed relative to the frame 1, and the movable gas pipeline 52 swings synchronously with the cantilever 3. The rotation center line of the movable gas pipeline 52 relative to the fixed gas pipeline 51 coincides with the axis of the central shaft 2.

[0074] In the present invention, a cover 6 is provided at the portion of the cantilever 3 away from the central rotating shaft 2, and the movement trajectory of the cover 6 passes through the mouth of the ladle 7. At the same time, at least one gas pipeline 5 includes a fixed gas pipeline 51 and a movable gas pipeline 52 that are connected in an airtight manner. The fixed gas pipeline 51 remains fixed relative to the frame 1, and the movable gas pipeline 52 swings synchronously with the cantilever 3. The rotation center line of the movable gas pipeline 52 relative to the fixed gas pipeline 51 coincides with the axis of the central rotating shaft 2. When the driving mechanism 4 drives the central rotating shaft 2 to rotate in a fixed direction in a preset rotation direction, the cantilever 3, the movable gas pipeline 52 and the cover 6 all swing synchronously with the axis of the central rotating shaft 2 as the swing center line, thereby preventing at least one gas pipeline 5 from bending due to the swing of the cantilever 3, and making the cover 6 away from or close to the mouth of the ladle 7 on the horizontal plane.

[0075] The specific technical effects of the above-mentioned horizontal lifting ladle roaster are as follows:

[0076] 1. When lateral conditions permit, the ladle cover horizontal lifting type ladle baking device adopts a lateral swinging structure, which can avoid interference between the ladle cover 6 and the traveling crane, and does not need to occupy the vertical layout space.

[0077] Second, since the cover 6 moves laterally, the dynamic load on the platform and the work site can be reduced, and the stress of the anchor connection structure of the frame 1 can be reduced.

[0078] 3. The driving force for driving the lateral movement of the ladle cover 6 does not need to overcome the gravity of the horizontal lifting ladle baking machine to do work, and in the process of the lateral movement of the ladle cover 6, even if the ladle cover 6 collides with the ladle 7, it will not generate a large impact load, and the staff are also safer when the power is cut off for maintenance.

[0079] Therefore, the horizontally-lifted ladle baking device of the present invention can prevent at least one gas pipeline 5 from bending due to the swing of the cantilever 3, so that the ladle cover 6 is away from or close to the ladle mouth of the ladle 7 in the horizontal plane. It does not need to do work on its own gravity, runs smoothly, is subject to small load, and has a long service life.

[0080] like Figure 3 and Figure 4 As shown, in order to achieve relative rotation between the movable air pipe 52 and the fixed air pipe 51 , the movable air pipe 52 is connected to the fixed air pipe 51 via a rotary joint 8 .

[0081] Furthermore, in order to facilitate the disassembly and assembly of the above-mentioned rotating joint 8, the above-mentioned rotating joint 8 includes a movable pipe fitting 81 detachably connected to the movable air pipe 52, a fixed pipe fitting 82 detachably connected to the fixed air pipe 51, and a connecting pipe sleeve 83 fixedly connected to the movable pipe fitting 81 and rotatably sleeved on the fixed pipe fitting 82.

[0082] In order to prevent the connecting sleeve 83 and the fixed pipe fitting 82 from detaching from each other, a first key groove is provided on the outer circumferential wall of the fixed pipe fitting 82, and a second key groove is provided on the inner circumferential wall of the connecting sleeve 83 near its own end. The second key groove is axially penetrated on one side and radially aligned with the first key groove. The first key groove and the second key groove jointly accommodate a key 84, and an anti-detachment member 85 is provided at the end of the connecting sleeve 83 for abutting against the key 84.

[0083] In order to improve the air tightness between the connecting sleeve 83 and the fixed pipe fitting 82 and reduce the wear of the connecting sleeve 83 and the fixed pipe fitting 82, a sealing ring 86 and a wear-resistant ring 87 are embedded on the outer peripheral wall of the fixed pipe fitting 82, and the sealing ring 86 and the wear-resistant ring 87 are both slidably matched with the inner peripheral wall of the connecting sleeve 83.

[0084] like Figure 6 As shown, in general, the gas pipeline 5 includes a gas input pipeline 53, an oxidant input pipeline 54 and an exhaust gas exhaust pipeline 55. The gas input pipeline 53 is composed of the fixed gas pipeline 51 and the movable gas pipeline 52. The oxidant input pipeline 54 and the exhaust gas exhaust pipeline 55 swing synchronously with the cantilever 3. For example, the oxidant input pipeline 54 is used to transport air.

[0085] In order to improve the integration of the horizontally-lifting ladle baking device and make the oxidant input pipeline 54 and the exhaust gas exhaust pipeline 55 swing synchronously with the central rotating shaft 2, a mounting frame 21 is provided on the central rotating shaft 2, and a blower 541 provided on the oxidant input pipeline 54 and an induced draft fan 551 provided on the exhaust gas exhaust pipeline 55 are both provided on the mounting frame 21.

[0086] like Figure 6 and Figure 7 As shown, the top end of the central shaft 2 is fixedly penetrated with a cantilever connecting shaft 22, and one end of the cantilever 3 is fixedly sleeved on the cantilever connecting shaft 22. For example, one end of the cantilever 3 is first sleeved on the cantilever connecting shaft 22, and then welded to the cantilever connecting shaft 22. In this way, when the cantilever 3 is subjected to an excessive torque relative to the cantilever connecting shaft 22, the weld or welding point between the cantilever 3 and the cantilever connecting shaft 22 is cracked, and the cantilever 3 swings downward relative to the cantilever connecting shaft 22, thereby preventing the cantilever 3 from bending and protecting the overall structure of the cantilever 3.

[0087] In order to make the above-mentioned central rotating shaft 2 rotate relative to the frame 1, the above-mentioned horizontal lifting type ladle baking machine also includes a swivel bearing seat 9, which includes a base 91 arranged on the frame 1 and a bearing 92 arranged between the base 91 and the central rotating shaft 2.

[0088] like Figure 5As shown, in order to simplify the structure of the above-mentioned driving mechanism 4, the above-mentioned driving mechanism 4 includes a telescope 41, a swing arm 42, and a swing limiter 43. One end of the telescope 4 in the telescopic direction is hinged to the frame 1, one end of the swing arm 42 is fixedly connected to the central shaft 2 and the other end is hinged to the other end of the telescope 41 in the telescopic direction, and the swing limiter 43 is arranged on the frame 1 and is located at the extreme swing position of the swing arm 42.

[0089] In summary, the present invention can prevent at least one gas transmission pipeline from bending due to the swing of the cantilever, so that the ladle cover is far away from or close to the ladle mouth on the horizontal plane, without doing work on its own gravity, running smoothly, with small load and long service life. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0090] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A ladle roaster with horizontally-lifted cover, characterized in that: include: Rack (1); A central rotating shaft (2) is arranged vertically, and the bottom end of the central rotating shaft (2) is rotatably disposed on the frame (1); A cantilever (3) is arranged horizontally, one end of the cantilever (3) is fixedly connected to the central rotating shaft (2), a portion of the cantilever (3) away from the central rotating shaft (2) is provided with a ladle cover (6), and a movement track of the ladle cover (6) passes through the ladle opening of the ladle (7); A driving mechanism (4), the driving mechanism (4) is drivingly connected to the central rotating shaft (2) so as to enable the central rotating shaft (2) to rotate in a fixed direction; A plurality of gas pipelines (5), at least one of which comprises a fixed gas pipeline (51) and a movable gas pipeline (52) which are in airtight communication with each other, the fixed gas pipeline (51) being fixed relative to the frame (1), the movable gas pipeline (52) swinging synchronously with the cantilever (3), and the rotation center line of the movable gas pipeline (52) relative to the fixed gas pipeline (51) being coincident with the axis of the central rotating shaft (2); The movable air supply pipe (52) is connected to the fixed air supply pipe (51) via a rotary joint (8); The rotary joint (8) comprises a movable pipe (81) detachably connected to the movable gas pipe (52), a fixed pipe (82) detachably connected to the fixed gas pipe (51), and a connecting pipe sleeve (83) fixedly connected to the movable pipe (81) and rotatably sleeved on the fixed pipe (82); The fixing pipe (82) has a first key groove on its outer peripheral wall, and the connecting pipe sleeve (83) has a second key groove on its inner peripheral wall near its end. The second key groove is axially penetrated on one side and radially aligned with the first key groove. The first key groove and the second key groove jointly accommodate a clamping key (84). The end of the connecting pipe sleeve (83) is provided with an anti-dropping member (85) that abuts against the clamping key (84). A sealing ring (86) and a wear-resistant ring (87) are embedded on the outer peripheral wall of the fixed pipe member (82), and the sealing ring (86) and the wear-resistant ring (87) are both slidably matched with the inner peripheral wall of the connecting pipe sleeve (83); The gas pipeline (5) comprises a fuel gas input pipeline (53), an oxidant input pipeline (54) and an exhaust gas exhaust pipeline (55); the fuel gas input pipeline (53) is composed of the fixed gas pipeline (51) and the movable gas pipeline (52); the oxidant input pipeline (54) and the exhaust gas exhaust pipeline (55) swing synchronously with the cantilever (3); a mounting frame (21) is provided on the central rotating shaft (2); a blower (541) provided on the oxidant input pipeline (54) and an induced draft fan (551) provided on the exhaust gas exhaust pipeline (55) are both provided on the mounting frame (21); A cantilever connecting shaft (22) is fixedly penetrated through the top end of the central rotating shaft (2), one end of the cantilever (3) is fixedly sleeved on the cantilever connecting shaft (22), and the cantilever (3) is welded to the cantilever connecting shaft (22), so that when the cantilever (3) is subjected to excessive torque relative to the cantilever connecting shaft (22), the weld or welding point between the cantilever (3) and the cantilever connecting shaft (22) is cracked, and the cantilever (3) swings downward relative to the cantilever connecting shaft (22).

2. The ladle roaster with horizontally-lifted cover according to claim 1, characterized in that: The ladle roaster with a horizontally-lifted cover also includes a rotary bearing seat (9), and the rotary bearing seat (9) includes a base (91) arranged on the frame (1) and a bearing (92) arranged between the base (91) and the central rotating shaft (2).

3. The ladle roaster with horizontally-lifted cover according to claim 1, characterized in that: The driving mechanism (4) comprises a telescopic device (41), a swing arm (42), and a swing limiter (43); one end of the telescopic device (4) in the telescopic direction is hinged to the frame (1); one end of the swing arm (42) is fixedly connected to the central rotating shaft (2) and the other end is hinged to the other end of the telescopic device (41) in the telescopic direction; and the swing limiter (43) is arranged on the frame (1) and is located at the extreme swing position of the swing arm (42).

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