CN216274220U

CN216274220U - Blast furnace hearth tuyere air quantity adjusting device

Info

Publication number: CN216274220U
Application number: CN202121872987.8U
Authority: CN
Inventors: 裴彦杰; 郭红杰
Original assignee: Hubei Jinshenglan Metallurgical Technology Co Ltd
Current assignee: Hubei Jinshenglan Metallurgical Technology Co Ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-04-12
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a blast furnace hearth tuyere air quantity adjusting device which comprises an adjusting cylinder, a tuyere pipe, a pressing plate and a baffle ring, wherein the baffle ring is cast at one end of the adjusting cylinder, the adjusting cylinder and the baffle ring are mutually communicated through an air duct, the adjusting cylinder is movably inserted in the tuyere pipe, a limiting ring is fixed on the outer wall of the tuyere pipe through a bolt, a threaded rod is arranged on the limiting ring in a threaded mode, an installation sleeve is welded at one end of the threaded rod, a movable rod is slidably arranged on the installation sleeve, the two ends of the movable rod are provided with the stopping blocks in a threaded mode, the diameter of each stopping block is larger than the inner diameter of the installation sleeve, the pressing plate is rotatably arranged at the other end of the threaded rod through an installation block, and the pressing plate is in mutual contact with the outer wall of the baffle ring. The utility model has compact structure and convenient use, is convenient to adjust the air volume of the blast furnace tuyere and meets the use requirements of personnel.

Description

Blast furnace hearth tuyere air quantity adjusting device

Technical Field

The utility model relates to the technical field of blast furnace tuyere adjustment, in particular to a blast furnace hearth tuyere air quantity adjusting device.

Background

The adjustment of the area of the tuyere is an important means for adjusting the agent at the lower part of the blast furnace. When the central over-blowing occurs and the edge gas flow is weak, or when the central gas flow is too weak and the edge develops too much, the area of the tuyere needs to be adjusted. Generally, blast furnace operators think that reducing the area of the tuyere increases the speed of the tuyere when the total air supply quantity is unchanged, correspondingly increases the blowing kinetic energy, and is beneficial to developing central air flow; and increasing the tuyere area reduces the tuyere speed, i.e., lowers the blast kinetic energy, which is advantageous for developing the edge flow. The above conclusions are obtained assuming constant flow in each tuyere.

In fact, the lower regulation of the blast furnace usually only changes the area of a few tuyeres, but the blast furnace air supply system is a communicating vessel, the hot air flow can be redistributed according to the area of the tuyeres, the flow of the tuyere with small area is small, the flow of the tuyere with large area is large, and in short, the flow of each tuyere is not uniform. On the one hand, the blast kinetic energy is related to the tuyere speed and the blast air quantity, and on the other hand, the inhibition or development of the central or edge coal gas flow is related to the blast kinetic energy (representing the capability of blast to penetrate into the center of a hearth) and the blast air quantity (determining the amount of the hearth coal gas), so that the conclusion can be changed, and therefore, the relationship between the tuyere area and the blast parameters needs to be researched quantitatively.

When the existing tuyere is adjusted, the redundant tuyere is usually blocked to reduce the air intake of the blast furnace, but the mode easily causes large air intake deviation in the circumferential direction of the blast furnace, influences the working effect of the blast furnace and can not meet the use requirements of personnel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a blast furnace hearth tuyere air quantity adjusting device which has the advantages of compact structure, convenience in use, convenience in adjusting the blast furnace tuyere air quantity and capability of meeting the use requirements of personnel, and solves the problems that when the conventional tuyere is adjusted, redundant tuyeres are blocked to reduce the air inlet quantity of a blast furnace, but the mode easily causes large air inlet quantity deviation in the circumferential direction of the blast furnace, influences the working effect of the blast furnace and cannot meet the use requirements of the personnel.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a blast furnace hearth wind gap air regulation apparatus, is including adjusting a section of thick bamboo, tuyere pipe, clamp plate and fender ring, the one end of adjusting a section of thick bamboo is cast and is had the fender ring, adjust a section of thick bamboo and keep off and communicate each other through the wind channel between the ring, it is intraductal at the tuyere to adjust a section of thick bamboo activity grafting, the outer wall of tuyere pipe passes through the bolt fastening spacing ring, the threaded rod is installed to the screw thread on the spacing ring, the one end welding of threaded rod has the installation cover, slidable mounting has the movable rod on the installation cover, the other end of threaded rod rotates through the installation piece and installs the clamp plate, the outer wall of clamp plate and fender ring contacts each other.

Preferably, a threaded hole matched with the threaded rod is formed in the limiting ring, and the threaded rod is installed in the threaded hole in a threaded mode.

Preferably, the outer wall of the baffle ring is provided with a groove matched with the pressing plate, and the lower end of the pressing plate is positioned on the groove.

Preferably, the pressing plate is provided with a through hole matched with the mounting block, and the mounting block is movably inserted into the through hole.

Preferably, the two ends of the movable rod are provided with check blocks in a threaded manner, and the diameter of each check block is larger than the inner diameter of the corresponding mounting sleeve.

Preferably, the number of the pressure plates is four, and the positions of the four pressure plates are distributed in an annular array relative to the limiting ring.

Compared with the prior art, the utility model has the following beneficial effects:

1. the blast furnace hearth tuyere air quantity adjusting device can be used for presetting a limiting ring through a bolt on the basis of the original tuyere, fixing an adjusting cylinder in the tuyere pipe, reducing the air quantity by replacing adjusting cylinders with different inner diameters, ensuring that the air quantity of each tuyere pipe is consistent, inserting the customized adjusting cylinder into the tuyere pipe in the actual operation process, then rotating a threaded rod, leading the threaded rod to drive a pressing plate to be close to a baffle ring through the thread meshing action between the threaded rod and the limiting ring until the pressing plate is limited by a groove on the baffle ring, continuing to rotate the threaded rod, leading the threaded rod to drive the pressing plate to extrude the baffle ring, further fixing the position of the adjusting cylinder in the tuyere pipe, only reversing the threaded rod when the adjusting cylinder needs to be replaced, leading the pressing plate to be far away from the baffle ring, dismounting the adjusting cylinder from the tuyere pipe, having compact structure and convenient use, the air volume of the blast furnace tuyere is convenient to adjust, and the use requirements of personnel are met.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic structural diagram of A in FIG. 1 according to the present invention.

In the figure: 1. a threaded rod; 2. an adjusting cylinder; 3. a tuyere pipe; 4. installing a sleeve; 5. a movable rod; 6. a stopper; 7. a limiting ring; 8. pressing a plate; 9. an air duct; 10. a baffle ring; 11. mounting blocks; 12. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, an embodiment of the present invention includes: the utility model provides a blast furnace hearth wind gap air regulation apparatus, including adjusting a section of thick bamboo 2, tuyere pipe 3, clamp plate 8 and fender ring 10, the one end casting of adjusting a section of thick bamboo 2 has fender ring 10, adjust a section of thick bamboo 2 and keep off and communicate each other through wind channel 9 between the ring 10, adjust 2 activities of a section of thick bamboo and peg graft in tuyere pipe 3, the outer wall of tuyere pipe 3 passes through bolt fastening spacing ring 7, can predetermine spacing ring 7 through the bolt on the basis of original wind gap, will adjust a section of thick bamboo 2 and fix in tuyere pipe 3, when reducing the amount of wind, through the regulation section of thick bamboo 2 of changing different internal diameters, make tuyere pipe 3 intake unanimous everywhere.

Threaded rod 1 is installed to the screw thread on the spacing ring 7, set up on the spacing ring 7 with the screw hole of 1 looks adaptation of threaded rod, threaded rod 1 screw thread is installed in the screw hole, at the in-process of actual operation, can insert tuyere pipe 3 with the regulation section of thick bamboo 2 of customization in, then rotate threaded rod 1, through the thread engagement effect between threaded rod 1 and the spacing ring 7 for threaded rod 1 drives clamp plate 8 and presses close to fender ring 10.

The welding of the one end of threaded rod 1 has installation cover 4, and slidable mounting has movable rod 5 on installation cover 4, and dog 6 is installed to the both ends screw thread of movable rod 5, and the diameter of dog 6 is greater than the internal diameter of installation cover 4, is convenient for rotate threaded rod 1 through movable rod 5.

The other end of the threaded rod 1 is rotatably provided with a pressing plate 8 through a mounting block 11, the pressing plate 8 is provided with through holes matched with the mounting block 11, the mounting block 11 is movably inserted into the through holes, the pressing plate 8 is contacted with the outer wall of a baffle ring 10, the four pressing plates 8 are arranged, the positions of the four pressing plates 8 are distributed in an annular array relative to a limiting ring 7, the outer wall of the baffle ring 10 is provided with a groove 12 matched with the pressing plate 8, the lower end of the pressing plate 8 is positioned on the groove 12 until the pressing plate 8 is limited by the groove 12 on the baffle ring 10, the threaded rod 1 is continuously rotated to drive the pressing plate 8 to extrude the baffle ring 10 by the threaded rod 1, so that the position of the adjusting cylinder 2 is fixed in the tuyere pipe 3, when the adjusting cylinder 2 needs to be replaced, only the threaded rod 1 needs to be reversed, the pressing plate 8 is far away from the baffle ring 10 to detach the adjusting cylinder 2 from the tuyere pipe 3, the structure is compact, the use is convenient and convenient for adjusting the blast volume of a blast furnace tuyere, the use requirements of personnel are met.

The working principle is as follows: when the blast furnace hearth tuyere air quantity adjusting device is used, the adjusting cylinder 2 can be fixed in the tuyere pipe 3 through the bolt preset limiting ring 7 on the basis of the original tuyere, the air volume is reduced by replacing the adjusting cylinders 2 with different inner diameters, the air inlet volume of the air inlet pipes 3 at each position is consistent, in the actual operation process, the customized adjusting cylinder 2 can be inserted into the tuyere pipe 3, then the threaded rod 1 is rotated, the threaded rod 1 drives the pressing plate 8 to be close to the baffle ring 10 through the thread meshing action between the threaded rod 1 and the limiting ring 7 until the pressing plate 8 is limited by the groove 12 on the baffle ring 10, the threaded rod 1 is continuously rotated, so that the threaded rod 1 drives the pressing plate 8 to extrude the baffle ring 10, thereby fixing the position of the adjusting cylinder 2 in the tuyere pipe 3, when the adjusting cylinder 2 needs to be replaced, the threaded rod 1 only needs to be reversed, so that the pressing plate 8 is far away from the baffle ring 10, and the adjusting cylinder 2 can be detached from the air port pipe 3.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a blast furnace hearth wind gap air regulation device, includes a regulation section of thick bamboo (2), tuyere pipe (3), clamp plate (8) and fender ring (10), its characterized in that: the utility model discloses a fan, including adjusting a section of thick bamboo (2), the one end of adjusting a section of thick bamboo (2) is cast and is had fender ring (10), adjust a section of thick bamboo (2) and keep off and communicate each other through wind channel (9) between ring (10), adjust a section of thick bamboo (2) activity and peg graft in tuyere pipe (3), the outer wall of tuyere pipe (3) passes through bolt fastening spacing ring (7), threaded rod (1) is installed to the last screw thread of spacing ring (7), the one end welding of threaded rod (1) has installation cover (4), slidable mounting has movable rod (5) on installation cover (4), the other end of threaded rod (1) rotates through installation piece (11) and installs clamp plate (8), clamp plate (8) and the outer wall of fender ring (10) each other contact.

2. The blast furnace hearth tuyere air quantity adjusting device of claim 1, which is characterized in that: the limiting ring (7) is provided with a threaded hole matched with the threaded rod (1), and the threaded rod (1) is installed in the threaded hole in a threaded mode.

3. The blast furnace hearth tuyere air quantity adjusting device of claim 1, which is characterized in that: the outer wall of the baffle ring (10) is provided with a groove (12) matched with the pressing plate (8), and the lower end of the pressing plate (8) is positioned on the groove (12).

4. The blast furnace hearth tuyere air quantity adjusting device of claim 1, which is characterized in that: the pressing plate (8) is provided with a through hole matched with the mounting block (11), and the mounting block (11) is movably inserted into the through hole.

5. The blast furnace hearth tuyere air quantity adjusting device of claim 1, which is characterized in that: the two ends of the movable rod (5) are provided with check blocks (6) in a threaded manner, and the diameter of each check block (6) is larger than the inner diameter of the corresponding mounting sleeve (4).

6. The blast furnace hearth tuyere air quantity adjusting device of claim 1, which is characterized in that: the number of the pressing plates (8) is four, and the positions of the four pressing plates (8) are distributed in an annular array relative to the limiting ring (7).