Adjustable blast furnace air supply branch pipe

Abstract

The utility model relates to the technical field of blast furnace air supply branch pipes, and discloses an adjustable blast furnace air supply branch pipe which comprises an adjusting pipe, a supporting sleeve is fixedly connected to the outer side of the adjusting pipe, two pull rods are fixedly connected to the outer side of the supporting sleeve, and limiting rings are fixedly connected to the outer sides of the two pull rods. A limiting block is fixedly connected to the end, away from the limiting ring, of the pull rod, a pull plate is fixedly connected to the outer side of the pull rod, follow-up columns are fixedly connected to the two ends of the pull plate, follow-up plates are fixedly connected to the outer sides of the follow-up columns, and rotating rods are fixedly connected to the ends, away from the follow-up columns, of the follow-up plates; and the driving end of the rotating rod is fixedly connected with fan blades. According to the fan, the follower plate is driven to rotate while the pulling plate moves, the rotating rod can rotate according to rotation of the follower plate, when the rotating rod rotates, the fan blades can rotate according to rotation of the rotating rod, and therefore the control over the hot air amount is achieved.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace air supply branch pipe technology, and in particular to an adjustable blast furnace air supply branch pipe. Background Technology

[0002] A blast furnace blast branch pipe is a specialized pipeline system used to transport hot blast. It belongs to the blast system in the blast furnace ironmaking process and is a crucial channel connecting the hot blast stove and the blast furnace tuyeres. The high-temperature, oxygen-rich blast generated by the hot blast stove is guided through the blast branch pipe to the tuyeres inside the blast furnace, providing the necessary hot air for combustion and a series of chemical reactions within the furnace.

[0003] In the existing technology, some blast furnace blast branch pipes cannot control the amount of hot air inside during use. When the air volume is too small, the internal materials cannot be fully burned, resulting in material waste. When the air volume is too large, the excessive oxygen will cause the internal materials to burn too rapidly and the reaction will be too violent, leading to local overheating. Therefore, an adjustable blast furnace blast branch pipe is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an adjustable blast furnace air supply branch pipe, which aims to improve the problem that the hot air volume inside the blast furnace air supply branch pipe cannot be adjusted in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable blast furnace air supply branch pipe includes an adjusting pipe, a support sleeve fixedly connected to the outer side of the adjusting pipe, two pull rods fixedly connected to the outer side of the support sleeve, a limit ring fixedly connected to the outer side of the two pull rods, a limit block fixedly connected to the end of the pull rod away from the limit ring, a pull plate fixedly connected to the outer side of the pull rod, follower columns fixedly connected to both ends of the pull plate, a follower plate fixedly connected to the outer side of the follower column, a rotating rod fixedly connected to the end of the follower plate away from the follower column, a fan blade fixedly connected to the driving end of the rotating rod, and a protective pipe detachably connected to the bottom of the adjusting pipe, with a protective component for protecting subsequent components fixedly connected to the inner wall of the protective pipe.

[0007] As a further description of the above technical solution:

[0008] The protective component includes a protective tube, with multiple sleeves fixedly connected to the inner wall of the protective tube. A top rod is slidably connected to the top of the multiple sleeves. A limit sleeve is fixedly connected to the bottom of the top rod. A spring is fixedly connected to the bottom of the limit sleeve. The end of the spring away from the limit sleeve is fixedly connected to the inner wall of the sleeve. A movable cone is fixedly connected to the top of the top rod.

[0009] As a further description of the above technical solutions:

[0010] The outer side of the limiting sleeve is slidably connected to the inner wall of the supporting sleeve, and the outer side of the movable cone is slidably connected to the inner wall of the protection tube.

[0011] As a further description of the above technical solutions:

[0012] The bottom of the protection tube is detachably connected with an observation tube, and the front end of the observation tube is detachably connected with a circular tube.

[0013] As a further description of the above technical solutions:

[0014] The right end of the observation tube is fixedly connected with an observation port, and the bottom of the observation tube is fixedly connected with a supporting leg.

[0015] As a further description of the above technical solutions:

[0016] The front end of the circular tube is fixedly connected with an output tube, and the inside of the output tube is provided with an output hole.

[0017] As a further description of the above technical solutions:

[0018] The bottom of the supporting leg is provided with a fixing hole, and the rear end of the observation port is fixedly connected with an observation glass.

[0019] As a further description of the above technical solutions:

[0020] The right end of the supporting sleeve is provided with a plurality of positioning holes, and the inner wall of the positioning holes is fixedly connected to the outer side of the limiting block.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1、The utility model discloses a movable pull rod is moved to the pull rod, and the pull rod moves, and the pull plate is rotated and the rotating rod is rotated according to the rotation of the follow-up plate when the pull plate moves, and the fan blade is rotated according to the rotation of the rotating rod when the rotating rod rotates, which realizes the adjustment of the space size in the pipe, thereby controlling the hot air volume.

[0023] 2、The utility model discloses a movable pull rod is moved to the pull rod, and the pull rod moves, and the pull plate is rotated and the rotating rod is rotated according to the rotation of the follow-up plate when the pull plate moves, and the fan blade is rotated according to the rotation of the rotating rod when the rotating rod rotates, which realizes the adjustment of the space size in the pipe, thereby controlling the hot air volume. DRAWINGS

[0024] Figure 1 A three-dimensional schematic view of the adjustable blast furnace air supply branch pipe is provided.

[0025] Figure 2 A structure schematic view of a pull rod of an adjustable blast furnace air supply branch pipe is provided in the utility model;

[0026] Figure 3 A structure schematic view of a fan blade of an adjustable blast furnace air supply branch pipe is provided in the utility model;

[0027] Figure 4 A structure schematic view of a movable cone of an adjustable blast furnace air supply branch pipe is provided in the utility model;

[0028] Figure 5 A structure schematic view of a spring of an adjustable blast furnace air supply branch pipe is provided in the utility model.

[0029] Legend:

[0030] 1, adjusting pipe; 2, supporting sleeve; 3, pull rod; 4, limiting ring; 5, limiting block; 6, pull plate; 7, follow-up column; 8, follow-up plate; 9, rotating rod; 10, fan blade; 11, positioning hole; 12, protection pipe; 13, supporting sleeve; 14, jacking rod; 15, limiting sleeve; 16, spring; 17, movable cone; 18, observation pipe; 19, observation port; 20, supporting leg; 21, round pipe; 22, output pipe. Specific implementation

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] Reference Figure 2 , Figure 3The utility model provides an embodiment: an adjustable blast furnace air supply branch pipe, including adjusting tube 1, adjusting tube 1 plays the role of key delivery hot air in whole air supply system, ensures that hot air can stably flow to subsequent components. The outer side fixed connection of adjusting tube 1 has support sleeve 2, and support sleeve 2 provides stable support for whole adjusting structure, guarantees the stability of structure in the process of adjusting air volume. The outer side fixed connection of support sleeve 2 has two pull rod 3, and pull rod 3 is the important component of adjusting air volume, and the size of air volume can be changed by pulling pull rod 3. The outer side fixed connection of two pull rod 3 has limit ring 4, and limit ring 4 can prevent pull rod 3 from excessive displacement in the movement process, and ensures the accuracy of adjustment. The end fixed connection of pull rod 3 away from limit ring 4 has limit block 5, and limit block 5 plays the limiting effect in the adjustment process of pull rod 3, prevents pull rod 3 from coming out of positioning hole 11. The outer side fixed connection of pull rod 3 has pull plate 6, and pull plate 6 moves under the drive of pull rod 3, to realize the adjustment of air volume. The both ends fixed connection of pull plate 6 has follow -up column 7, and follow -up column 7 moves along with the movement of pull plate 6, and provides power for the movement of subsequent components.

[0033] With reference to Figure 1 、 Figure 3 The outer side fixed connection of follow -up column 7 has follow -up plate 8, and follow -up plate 8 rotates under the drive of follow -up column 7, and then drives rotary rod 9 to rotate. The end fixed connection of follow -up plate 8 away from follow -up column 7 has rotary rod 9, and rotary rod 9 transmits the rotation of follow -up plate 8 to fan blade 10, realizes the adjustment of hot air flow. The drive end fixed connection of rotary rod 9 has fan blade 10, and fan blade 10 can be adjusted and controlled according to actual requirement hot air volume to enter the amount, when hot air passes through adjusting tube 1, the rotation of fan blade 10 can change the flow rate and flow of hot air, to realize the accurate adjustment of air volume. The bottom of adjusting tube 1 is connected with protection tube 12 through flange plate, and protection tube 12 can protect subsequent components, prevent hot air from causing damage to components. The inner wall fixed connection of protection tube 12 has protection assembly for protecting subsequent components. Protection assembly can play the role of buffering when hot air flow is large, and protects subsequent components from being damaged. Protection assembly includes protection tube 12, and protection tube 12 as the main part of protection assembly provides installation and support for other components in the inside.

[0034] With reference to Figure 4 、 Figure 5The inner wall of the protection pipe 12 is fixedly connected with a plurality of supporting sleeves 13, the supporting sleeves 13 provide guidance and support for the top rod 14, and ensure that the top rod 14 can stably move in the vertical direction. The top of the plurality of supporting sleeves 13 is slidably connected with the top rod 14, the top rod 14 can move up and down under the pressure of hot air, thereby driving the movable cone 17 to move. The bottom of the top rod 14 is fixedly connected with a limiting sleeve 15, the limiting sleeve 15 can limit the movement range of the top rod 14, and prevent the top rod 14 from being pulled out of the supporting sleeve 13. The bottom of the limiting sleeve 15 is fixedly connected with a spring 16, the spring 16 can be compressed when the hot air pressure is large, thereby playing a buffering role and protecting subsequent components from being damaged. One end of the spring 16 away from the limiting sleeve 15 is fixedly connected to the inner wall of the supporting sleeve 13, and the elasticity of the spring 16 can automatically adjust the position of the top rod 14 according to the size of the hot air pressure. The top of the top rod 14 is fixedly connected with the movable cone 17, the movable cone 17 can move downward under the action of the hot air pressure, thereby increasing the flow space of the hot air and reducing the flow rate and pressure of the hot air. The outer side of the limiting sleeve 15 is slidably connected to the inner wall of the supporting sleeve 13, and this sliding connection mode can ensure that the top rod 14 stably moves in the vertical direction, thereby improving the reliability of the protection assembly. The outer side of the movable cone 17 is slidably connected to the inner wall of the protection pipe 12, when the solution reaches the inside of the protection pipe 12 when backflow occurs, the solution will impact the lower side of the movable cone 17 at this time, the movable cone 17 moves upward under the pressure and tightly abuts against the inner wall of the protection pipe 12, so that the solution cannot move upward, thereby preventing the solution from backflowing and protecting the upper assembly.

[0035] With reference to Figure 1 The bottom of the protection pipe 12 is connected with an observation pipe 18 through a flange plate, the right end of the observation pipe 18 is fixedly connected with an observation port 19, an observation glass is installed on the observation port 19, and the brightness of the flame inside the blast furnace can be clearly observed, so that the appropriate amount of hot air can be adjusted. The bottom of the observation pipe 18 is fixedly connected with a supporting leg 20, the supporting leg 20 provides stable support for the observation pipe 18, and ensures that the observation pipe 18 will not shake during the working process. The front end of the observation pipe 18 is connected with a round pipe 21 through a flange plate, the round pipe 21 can transmit hot air to an output pipe 22, thereby realizing directional delivery of the hot air. The front end of the round pipe 21 is fixedly connected with the output pipe 22, the output pipe 22 delivers hot air to the inside of the blast furnace, thereby providing heat for the normal operation of the blast furnace. The inside of the output pipe 22 is provided with an output hole, the output hole can uniformly distribute hot air, thereby improving the utilization efficiency of the hot air. The bottom of the supporting leg 20 is provided with a fixing hole, the fixing hole can be fixed to the ground or the outside of the blast furnace through bolts and other fixing members, thereby improving the stability of the entire air supply branch pipe.

[0036] With reference to Figures 1 to 3The rear end of the observation port 19 is fixedly connected with an observation glass, the observation glass has the characteristics of high temperature resistance and high transparency, and can clearly observe the internal condition of the blast furnace in a high temperature environment. A plurality of positioning holes 11 are formed in the right end of the support sleeve 2, the pull rod 3 can be fixed at different positions according to different air volume requirements, and the air volume can be accurately adjusted. The inner wall of the positioning hole 11 is fixedly connected to the outer side of the limiting block 5, and the cooperation of the limiting block 5 and the positioning hole 11 can ensure that the pull rod 3 will not come out during adjustment, thereby improving the reliability during adjustment.

[0037] Working principle: in use, hot air passes through the adjusting pipe 1, the pull rod 3 connected to the adjusting pipe 1 is pulled, the pull rod 3 selects the appropriate air volume and is placed in the positioning hole 11, at this time the pull rod 3 drives the pull plate 6 to move, the rotation of the follower plate 8 drives the rotation of the rotating rod 9 and also drives the rotation of the radial fan blade 10 in the adjusting pipe 1, in addition, the radial fan blade 10 can also be adjusted according to the actual requirement of the hot air volume, when too much hot air is not needed, the pull rod 3 can be placed in the lower positioning hole 11, the limiting block 5 is outside the pull rod 3, and the pull rod 3 will not pull out the pull plate 6 when being pulled up.

[0038] When the hot air passes through the adjusting pipe 1 and enters the protection pipe 12, the movable cone 17 in the protection pipe 12 will be subjected to a strong downward pressure when a large amount of hot air enters, the top rod 14 below the downward pressure above the movable cone 17 will be caused to stretch and retract downward due to the characteristics of the spring 16 in the support sleeve 13, at this time the movable cone 17 will leave the inner wall of the protection pipe 12 to form a large gap, allowing hot air to flow into the lower observation pipe 18, because the observation pipe 18 transmits to the front circular pipe 21, the circular pipe 21 transmits to the output pipe 22 again, and finally the output hole in the output pipe 22 transmits hot air to the blast furnace, at this time the appropriate hot air volume can be adjusted according to the brightness of the flame in the blast furnace observed through the observation port 19. When backflow occurs, the solution reaches the inside of the protection pipe 12, the solution will impact the lower part of the movable cone 17 at this time, the movable cone 17 moves upward and tightly abuts against the inner wall of the protection pipe 12, thereby preventing the backflow of the solution and protecting the upper assembly.

[0039] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable blast furnace tuyere branch pipe comprising an adjustment pipe (1), characterized in that: The outer side of the adjusting pipe (1) is fixedly connected with a supporting sleeve (2), the outer side of the supporting sleeve (2) is fixedly connected with two pull rods (3), the outer side of the two pull rods (3) is fixedly connected with a limiting ring (4), one end of the pull rod (3) away from the limiting ring (4) is fixedly connected with a limiting block (5), the outer side of the pull rod (3) is fixedly connected with a pull plate (6), both ends of the pull plate (6) are fixedly connected with a follower column (7), the outer side of the follower column (7) is fixedly connected with a follower plate (8), one end of the follower plate (8) away from the follower column (7) is fixedly connected with a rotating rod (9), the driving end of the rotating rod (9) is fixedly connected with a fan blade (10), the bottom of the adjusting pipe (1) is detachably connected with a protection pipe (12), the inner wall of the protection pipe (12) is fixedly connected with a protection assembly for protecting subsequent components.

2. An adjustable blast furnace tuyere stem according to claim 1, characterised in that: The protection assembly comprises a protection pipe (12), the inner wall of the protection pipe (12) is fixedly connected with a plurality of supporting sleeves (13), the top of the plurality of supporting sleeves (13) is slidably connected with a top rod (14), the bottom of the top rod (14) is fixedly connected with a limiting sleeve (15), the bottom of the limiting sleeve (15) is fixedly connected with a spring (16), one end of the spring (16) away from the limiting sleeve (15) is fixedly connected to the inner wall of the supporting sleeve (13), the top of the top rod (14) is fixedly connected with a movable cone (17).

3. An adjustable blast furnace tuyere stem according to claim 2, characterised in that: The outer side of the limiting sleeve (15) is slidably connected to the inner wall of the supporting sleeve (13), and the outer side of the movable cone (17) is slidably connected to the inner wall of the protection pipe (12).

4. An adjustable blast furnace tuyere stem according to claim 2, characterised in that: The bottom of the protection pipe (12) is detachably connected with an observation pipe (18), and the front end of the observation pipe (18) is detachably connected with a circular pipe (21).

5. An adjustable blast furnace tuyere stem according to claim 4, characterised in that: The right end of the observation pipe (18) is fixedly connected with an observation port (19), and the bottom of the observation pipe (18) is fixedly connected with a supporting leg (20).

6. An adjustable blast furnace tuyere stem according to claim 4, characterised in that: The front end of the circular pipe (21) is fixedly connected with an output pipe (22), and the inside of the output pipe (22) is provided with an output hole.

7. An adjustable blast furnace tuyere stem according to claim 5, characterised in that: The bottom of the supporting leg (20) is provided with a fixing hole, and the rear end of the observation port (19) is fixedly connected with an observation glass.

8. An adjustable blast furnace tuyere according to claim 1, wherein: The right end of the supporting sleeve (2) is provided with a plurality of positioning holes (11), and the inner wall of the positioning hole (11) is fixedly connected to the outer side of the limiting block (5).

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