Blast kinetic energy adjusting device for blast furnace

Abstract

The invention discloses a blast furnace blast kinetic energy adjusting device, and belongs to the technical field of blast furnace blast, the blast furnace blast kinetic energy adjusting device comprises a blast kinetic energy device and a mounting device used for mounting the blast kinetic energy device, the blast kinetic energy device comprises a tuyere belly pipe, the tuyere belly pipe comprises a first pipe body, and a first flange plate is arranged above the first pipe body in a communicating mode; a second flange plate is arranged on the blast furnace equipment, and the first flange plate and the second flange plate are fixedly connected through a plurality of bolts and a plurality of nuts. According to the kinetic energy adjusting device, the mounting device is arranged, so that the nut can be automatically disassembled, the tuyere belly pipe can be prevented from being automatically disassembled and assembled, the tuyere belly pipe is prevented from being manually disassembled and assembled when the area of the tuyere is changed, and workers are prevented from working beside a blast furnace for a long time; when the blast furnace needs to improve the smelting strength and the tuyere area is increased, the tuyere brick sleeve can be directly poked off on line, and the tuyere small sleeve does not need to be replaced by damping down again, so that the production cost is saved to a great extent.

Description

Technical Field

[0001] The invention belongs to the technical field of blast furnace blasting, and in particular relates to a blast furnace blasting kinetic energy regulating device. Background Art

[0002] At present, domestic steel production capacity is in excess and the market is sluggish. Most blast furnaces are in a state of reduced production, which will inevitably control the blast furnace air volume. When the air volume is reduced, the blast furnace kinetic energy will decrease, which will cause varying degrees of accumulation in the furnace, poor furnace conditions, and increased blast furnace molten iron costs. Therefore, the blast furnace kinetic energy needs to be adjusted according to demand.

[0003] The method for adjusting the kinetic energy of blast is usually to remove the tuyere direct blowing pipe mouth, replace the tuyere small sleeve thereon, and then install the tuyere direct blowing pipe. The tuyere direct blowing pipe and the blast furnace are usually flange-connected. Therefore, when disassembling and assembling the tuyere direct blowing pipe, it is necessary to disassemble and assemble the nuts of the connecting flange. Since there are many nuts and they need to be operated manually with a wrench, the workers will work for a long time under the high temperature next to the blast furnace during the disassembly and assembly process, which makes the labor intensity high. In addition, the blast furnace needs to be shut down when replacing the tuyere small sleeve. Therefore, the cost during the smelting process is high. In order to solve the above problems, a blast furnace blast kinetic energy regulating device is provided.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a blast furnace blast kinetic energy regulating device. By setting an installation device, the automatic disassembly of the nut can be realized, thereby avoiding the automatic disassembly and assembly of the tuyere direct blowing pipe, avoiding manual disassembly and assembly of the tuyere direct blowing pipe when changing the tuyere area, avoiding the staff from working for a long time next to the blast furnace, and improving the comfort of the staff.

[0006] To achieve the above-mentioned purpose, the present invention proposes a blast furnace air blast kinetic energy regulating device, the kinetic energy regulating device includes an air blast kinetic energy device and an installation device for installing the air blast kinetic energy device, the air blast kinetic energy device includes a tuyere direct blowing pipe, the tuyere direct blowing pipe includes a first tube body, a first flange is provided on the top of the first tube body, a second flange is provided on the blast furnace equipment, and the first flange and the second flange are fixedly connected by a plurality of bolts and a plurality of nuts.

[0007] The mounting device includes a base, a hydraulic cylinder is fixed above the base, a support plate supporting the first tube body is fixed above the hydraulic cylinder, a first drive box is fixed below the support plate, a first motor is fixed in the first drive box, an output shaft of the first motor passes through the bottom plate of the first drive box and is vertically fixed with a first connecting rod, a second drive box is fixed at one end of the first connecting rod away from the output shaft of the first motor, and a second motor is fixed in the second drive box.

[0008] The output shaft of the second motor passes through the side plate of the second drive box away from the first connecting rod, and a second electric telescopic rod is vertically fixed to it; a third electric telescopic rod parallel to the first connecting rod is fixed to the second electric telescopic rod; a connecting block is fixed to the output shaft of the third electric telescopic rod; a third motor is fixed to a side of the connecting block close to the second electric telescopic rod; and the output shaft of the third motor passes through the connecting block and is fixed with a hexagonal sleeve.

[0009] Furthermore, a small tuyere sleeve is installed on the tuyere direct blowing pipe, the small tuyere sleeve is connected to the tuyere direct blowing pipe by a plurality of bolts, a brick sleeve for changing the size of the tuyere is installed inside the small tuyere sleeve, and the installation device is used to install the tuyere direct blowing pipe.

[0010] Furthermore, the cross-section of the support plate is V-shaped.

[0011] Furthermore, a cover body is rotatably provided on one end of the first tube body away from the tuyere sleeve, a limit strip is rotatably provided on one side of the cover body away from its rotating axis, a first limit hole is provided on the limit strip, a U-shaped slot is fixed on one side of the first tube body, a second limit hole is provided on the U-shaped slot, when the limit strip is inserted into the U-shaped slot, the first limit hole corresponds to the second limit hole, and the tuyere direct blowing tube also includes a pin rod.

[0012] Furthermore, a fourth electric telescopic rod is fixed on both sides of the connecting block, the fourth electric telescopic rod is perpendicular to the axis of the third motor, a fifth electric telescopic rod is vertically fixed to the side of the output shaft of the fourth electric telescopic rod away from the bottom of the connecting block, a second connecting rod is vertically fixed to the fifth electric telescopic rod, the two second connecting rods are collinear, and a clamping block is fixed to the second connecting rod.

[0013] Furthermore, the clamping surface of the clamping block has an angle of 120°.

[0014] Furthermore, a storage tray for storing nuts is fixed on the mounting device, and a plurality of storage slots are provided above the storage tray.

[0015] Furthermore, a handle for controlling the rotation of the cover is fixed on the cover.

[0016] The blast furnace blast kinetic energy regulating device proposed by the present invention can bring the following beneficial effects:

[0017] 1. The kinetic energy regulating device of the present invention can realize the automatic disassembly of the nut by setting the installation device, so as to avoid the automatic disassembly and assembly of the tuyere direct blowing pipe, avoid the manual disassembly and assembly of the tuyere direct blowing pipe when changing the tuyere area, avoid the staff working for a long time beside the blast furnace, and improve the comfort of the staff;

[0018] 2. When the kinetic energy regulating device of the present invention needs to increase the smelting strength and increase the tuyere area, the tuyere brick sleeve can be directly removed online without stopping the blast furnace again to replace the tuyere small sleeve, thus saving production costs to a great extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic structural diagram from a first perspective of a blast furnace blast kinetic energy regulating device of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the tuyere small sleeve and the brick sleeve of the present invention.

[0022] Figure 3 This is a schematic structural diagram from a second perspective of a blast furnace blast kinetic energy regulating device of the present invention.

[0023] Figure 4 for Figure 1 Enlarged structural diagram at A in the middle.

[0024] Figure 5 This is a schematic structural diagram from a third perspective of a blast furnace blast kinetic energy regulating device of the present invention.

[0025] Figure 6 for Figure 5 Enlarged structural diagram at B in the middle. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0027] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

[0031] The embodiment of the present invention provides a blast furnace kinetic energy regulating device, the kinetic energy regulating device comprises a blast kinetic energy device and an installation device 4 for installing the blast kinetic energy device, such as Figure 1 As shown, the blast kinetic energy device includes a tuyere direct blowing pipe 1, on which a tuyere small sleeve 2 is installed, the tuyere small sleeve 2 is connected to the tuyere direct blowing pipe 1 by a plurality of bolts, and a brick sleeve 3 for changing the size of the tuyere is installed inside the tuyere small sleeve 2, such as Figure 2 As shown, the tuyere sleeve 2 and the brick sleeve 3 are both conical, and the mounting device 4 is used to mount the tuyere straight blowing pipe 1. A storage tray 5 for storing nuts is fixed on the mounting device 4, and a plurality of storage slots 51 are arranged above the storage tray 5.

[0032] The tuyere direct blowing pipe 1 comprises a first tube body 11, such as Figure 3 , Figure 4As shown, a first flange 12 is provided on the top of the first tube body 11, and a second flange is provided on the blast furnace equipment. The first flange 12 and the second flange are fixedly connected by a plurality of bolts and a plurality of nuts.

[0033] A cover body 13 is rotatably provided at one end of the first tube body 11 away from the tuyere small sleeve 2, and a handle 19 for controlling the rotation thereof is fixed on the cover body 23; a limit strip 14 is rotatably provided on one side of the cover body 13 away from its rotating axis, and a first limit hole 17 is provided on the limit strip 14; a U-shaped slot 15 is fixed on one side of the first tube body 11, and a second limit hole 16 is provided on the U-shaped slot 15; when the limit strip 14 is inserted into the U-shaped slot 15, the first limit hole 17 corresponds to the second limit hole 16; the tuyere direct blowing pipe 1 also includes a pin rod 18, and when the pin rod 18 is inserted into the first limit hole 17 and the second limit hole 16, the cover body 13 is limited.

[0034] The mounting device 4 comprises a base 41, such as Figure 5 As shown, a hydraulic cylinder 42 is fixed above the base 41, and a support plate 43 supporting the first tube body 11 is fixed above the hydraulic cylinder 42. The cross-section of the support plate 43 is V-shaped, and a first drive box 44 is fixed below the support plate 43. A first motor 45 is fixed in the first drive box 44. The output shaft of the first motor 45 passes through the bottom plate of the first drive box 44 and is vertically fixed with a first connecting rod 46. A second drive box 47 is fixed to the end of the first connecting rod 46 away from the output shaft of the first motor 45, and a second motor 48 is fixed in the second drive box 47.

[0035] The output shaft of the second motor 48 passes through the side plate of the second drive box 47 away from the first connecting rod 46, and a second electric telescopic rod 49 is vertically fixed thereto. A third electric telescopic rod 410 parallel to the first connecting rod 46 is fixed to the second electric telescopic rod 49. Figure 6 As shown, a connecting block 411 is fixed on the output shaft of the third electric telescopic rod 410, and a third motor 412 is fixed on the side of the connecting block 411 close to the second electric telescopic rod 49. The output shaft of the third motor 412 passes through the connecting block 411 and is fixed with a hexagonal sleeve 413, and the inner diameter of the sleeve 413 is slightly larger than the outer diameter of the nut.

[0036] A fourth electric telescopic rod 414 is fixed on both sides of the connecting block 411, and the fourth electric telescopic rod 414 is perpendicular to the axis of the third motor 412. A fifth electric telescopic rod 415 is vertically fixed to the side of the output shaft of the fourth electric telescopic rod 414 away from the bottom of the connecting block 411, and a second connecting rod 416 is vertically fixed to the fifth electric telescopic rod 415. The two second connecting rods 416 are collinear, and a clamping block 417 is fixed to the second connecting rod 416, and the clamping surface of the clamping block 417 is an angle of 120°.

[0037] When in use, the way to change the air outlet area is as follows:

[0038] First, remove the tuyere direct blowing pipe 1 from the blast furnace, then calculate the tuyere area required to meet the blast furnace blast kinetic energy, make a brick sleeve 3 with the required tuyere diameter, then insert the brick sleeve 3 into the tuyere small sleeve 2, and install the tuyere direct blowing pipe 1 on the blast furnace again.

[0039] The method of installing the tuyere direct blowing pipe 1 is as follows:

[0040] The tuyere direct blowing pipe 1 is placed on the support plate 43 so that the first motor 45 and the first flange 12 are coaxial, the moving installation device 4 is moved so that the first flange 12 is aligned with the second flange, the tuyere direct blowing pipe 1 is lifted by starting the hydraulic cylinder 42 so that the first flange 12 is against the second flange, the second electric telescopic rod 49 is adjusted downward by starting the second motor 48, the first motor 45, the third electric telescopic rod 410 and the fourth electric telescopic rod 414 cooperate to control the clamping block 417 to clamp the corresponding nut, and the second electric telescopic rod 49 is adjusted upward by starting the second motor 48. , and then extend the fourth electric telescopic rod 414 to release the nut so that it falls into the sleeve 413, and control the nut to move to the bottom of the corresponding bolt through the cooperation of the first motor 45, the third electric telescopic rod 410 and the third motor 412, and control the nut to be sleeved on the lower end of the bolt by starting the second electric telescopic rod 49, and fix the nut on the bolt through the cooperation of the fourth electric telescopic rod 414 and the fifth electric telescopic rod 415 to control the clamping block 417, and start the third motor 412 to control the nut to rotate and install it on the corresponding bolt, so that the installation device 4 can realize the automatic installation of the tuyere direct blowing pipe 1.

[0041] When dismantling and installing the tuyere direct blowing pipe 1, the nut is removed by the installation device 4 without removing the bolt, and the removed nut is placed in the storage groove 51, so as to realize automatic disassembly, avoid the staff from working for a long time beside the blast furnace, and improve the comfort of the staff.

[0042] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0043] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A blast furnace kinetic energy regulating device, the kinetic energy regulating device comprising a blast kinetic energy device and an installation device (4) for installing the blast kinetic energy device, characterized in that: The blast kinetic energy device comprises a tuyere direct blowing pipe (1), the tuyere direct blowing pipe (1) comprises a first pipe body (11), a first flange (12) is provided above the first pipe body (11), a second flange is provided on the blast furnace equipment, and the first flange (12) and the second flange are fixedly connected by a plurality of bolts and a plurality of nuts; The mounting device (4) comprises a base (41), a hydraulic cylinder (42) is fixed above the base (41), a support plate (43) supporting the first tube body (11) is fixed above the hydraulic cylinder (42), a first drive box (44) is fixed below the support plate (43), a first motor (45) is fixed inside the first drive box (44), an output shaft of the first motor (45) passes through the bottom plate of the first drive box (44) and is vertically fixed with a first connecting rod (46), a second drive box (47) is fixed at one end of the first connecting rod (46) away from the output shaft of the first motor (45), and a second motor (48) is fixed inside the second drive box (47); The output shaft of the second motor (48) passes through a side plate of the second drive box (47) away from the first connecting rod (46), and a second electric telescopic rod (49) is vertically fixed thereto; a third electric telescopic rod (410) parallel to the first connecting rod (46) is fixed to the second electric telescopic rod (49); a connecting block (411) is fixed to the output shaft of the third electric telescopic rod (410); a third motor (412) is fixed to a side of the connecting block (411) close to the second electric telescopic rod (49); and the output shaft of the third motor (412) passes through the connecting block (411) and is fixed with a hexagonal sleeve (413).

2. A blast furnace blast kinetic energy regulating device according to claim 1, characterized in that: The tuyere direct blowing pipe (1) is provided with a small tuyere sleeve (2), the small tuyere sleeve (2) and the tuyere direct blowing pipe (1) are connected via a plurality of bolts, a brick sleeve (3) for changing the size of the tuyere is provided inside the small tuyere sleeve (2), and the mounting device (4) is used for mounting the tuyere direct blowing pipe (1).

3. A blast furnace blast kinetic energy regulating device according to claim 2, characterized in that: The cross section of the support plate (43) is V-shaped.

4. A blast furnace blast kinetic energy regulating device according to claim 3, characterized in that: A cover body (13) is rotatably provided at one end of the first tube body (11) away from the tuyere sleeve (2); a limit strip (14) is rotatably provided on the side of the cover body (13) away from the rotation axis; a first limit hole (17) is provided on the limit strip (14); a U-shaped slot (15) is fixed on one side of the first tube body (11); a second limit hole (16) is provided on the U-shaped slot (15); when the limit strip (14) is inserted into the U-shaped slot (15), the first limit hole (17) corresponds to the second limit hole (16); and the tuyere direct blowing tube (1) further comprises a pin rod (18).

5. A blast furnace blast kinetic energy regulating device according to claim 4, characterized in that: A fourth electric telescopic rod (414) is fixed on both sides of the connecting block (411), the fourth electric telescopic rod (414) is perpendicular to the axis of the third motor (412), a fifth electric telescopic rod (415) is vertically fixed on the side of the output shaft of the fourth electric telescopic rod (414) away from the bottom of the connecting block (411), a second connecting rod (416) is vertically fixed on the fifth electric telescopic rod (415), the two second connecting rods (416) are collinear, and a clamping block (417) is fixed on the second connecting rod (416).

6. A blast furnace blast kinetic energy regulating device according to claim 5, characterized in that: The clamping surface of the clamping block (417) has an angle of 120°.

7. A blast furnace blast kinetic energy regulating device according to claim 6, characterized in that: A storage tray (5) for storing nuts is fixed on the installation device (4), and a plurality of storage slots (51) are arranged above the storage tray (5).

8. A blast furnace blast kinetic energy regulating device according to claim 7, characterized in that: A handle (19) for controlling the rotation of the cover (23) is fixed on the cover (23).

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