Blast furnace tuyere device for ironmaking

Abstract

The utility model relates to the technical field of blast furnaces, in particular to a blast furnace tuyere device for ironmaking, which comprises an outer tuyere sleeve, an inner sheath arranged in the outer tuyere sleeve, a clamping seat arranged on the outer side of the outer tuyere sleeve, outer shells fixed on two sides of the clamping seat, insertion blocks arranged in the two outer shells, and connecting rods fixed on opposite ends of the two insertion blocks. The two connecting rods are both sleeved with first springs, the two sides of the clamping base and the two sides of the outer tuyere sleeve are both provided with inserting grooves matched with inserting blocks, two connecting bases are integrally formed on the outer side of the clamping base, clamping blocks are integrally formed on the two sides of the inner protective sleeve, inserting rods are arranged on the two sides of the inner protective sleeve, and the bottom ends of the two clamping blocks are both provided with inserting grooves matched with the ends of the inserting rods. Guide columns are fixed to the top ends of the two inserting rods, the two guide columns are sleeved with second springs, and pressing blocks are fixed to the top ends of the two guide columns; the two connecting rods are pulled, and the two pressing blocks are pressed, so that the inner sheath is conveniently separated from the outer tuyere sleeve, the inner sheath is conveniently disassembled and replaced, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnaces, in particular to a blast furnace tuyere device for ironmaking. Background Art

[0002] The blast furnace is made of steel plates as the furnace shell, and the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: throat, furnace body, furnace waist, furnace belly, and furnace hearth. Tuyere sleeves are usually installed at the tuyere of the blast furnace. After long-term use, the inner wall of the tuyere sleeve is easily worn. Usually, the entire tuyere sleeve is removed for replacement, which causes a certain degree of waste. Therefore, a blast furnace tuyere device for ironmaking is proposed to save replacement costs. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides a blast furnace tuyere device for ironmaking.

[0004] The utility model solves the technical problem by adopting a technical solution that is a blast furnace tuyere device for ironmaking, comprising an outer tuyere sleeve, an inner sleeve is arranged inside the outer tuyere sleeve, a holder is arranged outside the outer tuyere sleeve, outer shells are fixed on both sides of the holder, plug blocks are arranged inside the two outer shells, connecting rods are fixed on the opposite ends of the two plug blocks, through holes matching the connecting rods are opened on the two outer shells, first springs are sleeved on the two connecting rods, and the holder and the outer tuyere sleeve are provided with a spring on both sides. A slot adapted for the plug block, two connecting seats are integrally formed on the outer side of the card seat, card blocks are integrally formed on both sides of the inner sleeve, two card slots adapted for the card blocks are provided on the outer air outlet sleeve, plug rods are provided on both sides of the inner sleeve, and two through slots for the top of the plug rod to pass through are provided on the outer air outlet sleeve, slots adapted for the end of the plug rod are provided at the bottom ends of the two card blocks, guide pillars are fixed at the top ends of the two plug rods, second springs are sleeved on the two guide pillars, and pressure blocks are fixed at the top ends of the two guide pillars.

[0005] By adopting the above technical solution, the two connecting seats are fixed to the blast furnace tuyere by bolts, and the inner sleeve can protect the inner side of the outer tuyere sleeve. When the inner sleeve needs to be replaced, the two connecting rods are pulled, and the two connecting rods drive the two plug blocks to move away from the outer tuyere sleeve, so as to facilitate the removal of the outer tuyere sleeve. The two pressing blocks are pressed, and the two pressing blocks drive the two plug rods to move, and the ends of the two plug rods are disengaged from the two clamping blocks, so as to facilitate the separation of the inner sleeve and the outer tuyere sleeve, and then facilitate the disassembly and replacement of the inner sleeve, which saves costs compared with the traditional method of replacing the entire tuyere sleeve.

[0006] Specifically, a cooling cavity is provided in the outer air inlet sleeve and the inner protective sleeve, and a water inlet and a water outlet are provided on the outer air inlet sleeve and the inner protective sleeve.

[0007] By adopting the above technical scheme, cooling water enters the cooling chamber through the water inlet on the outer air inlet sleeve, and the water after absorbing heat is discharged from the water outlet on the outer air inlet sleeve, which is beneficial to the cooling of the outer air inlet sleeve. Cooling water enters the cooling chamber through the water inlet on the inner jacket, and the water after absorbing heat is discharged through the water outlet on the inner jacket, which is beneficial to the cooling of the inner jacket.

[0008] Specifically, a plurality of protrusions are integrally formed on the outer side of the outer air outlet sleeve, and a plurality of slots adapted to the protrusions are formed on the inner side of the holder.

[0009] By adopting the above technical solution, the protrusion cooperates with the slot on the inner side of the holder, which facilitates the positioning of the outer air outlet sleeve during installation.

[0010] Specifically, two protrusions are integrally formed on the outer side of the inner protective sleeve, and two slots adapted to the protrusions are provided on the inner side of the outer air outlet sleeve.

[0011] By adopting the above technical solution, the protrusion cooperates with the slot on the inner side of the outer air outlet sleeve, which facilitates the positioning of the inner sleeve during installation.

[0012] Specifically, the inner sheath is provided with two grooves, and handles are provided in the two grooves, and the two handles are integrally formed with the inner sheath.

[0013] By adopting the above technical solution and setting of the handle, it is convenient to draw the inner sleeve out of the outer air outlet sleeve.

[0014] Specifically, stoppers are fixed to the ends of the two connecting rods away from the inner sheath.

[0015] By adopting the above technical solution and setting the two blocks, it is convenient to hold and pull the connecting rod.

[0016] Beneficial effects of the utility model:

[0017] (1) The utility model discloses a blast furnace tuyere device for iron smelting, in which two connecting seats are fixed to the blast furnace tuyere by bolts, and an inner sleeve can protect the inner side of an outer tuyere sleeve. When the inner sleeve needs to be replaced, two connecting rods are pulled, and the two connecting rods drive two plug blocks to move away from the outer tuyere sleeve, so as to facilitate the removal of the outer tuyere sleeve. Two pressing blocks are pressed, and the two pressing blocks drive two plug rods to move, and the ends of the two plug rods are disengaged from the two clamping blocks, so as to facilitate the separation of the inner sleeve from the outer tuyere sleeve, and further facilitate the disassembly and replacement of the inner sleeve. Compared with the traditional method of replacing the entire tuyere sleeve, the cost is saved.

[0018] (2) In the blast furnace tuyere device for ironmaking described in the utility model, the protrusion cooperates with the slot on the inner side of the holder to facilitate the positioning of the outer tuyere sleeve during installation, and the protrusion cooperates with the slot on the inner side of the outer tuyere sleeve to facilitate the positioning of the inner sleeve during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 For the utility model Figure 1 A magnified view of the structure at center A;

[0022] Figure 3 It is a structural schematic diagram of the combination of the housing, the connecting rod, the stopper, the insert block and the first spring of the utility model;

[0023] Figure 4 For the utility model Figure 1 A magnified view of the structure at B in the middle.

[0024] In the figure: 1. outer air inlet sleeve; 2. holder; 3. convex block; 4. connecting seat; 5. inner sleeve; 6. protrusion; 7. handle; 8. outer shell; 9. connecting rod; 10. stopper; 11. insert block; 12. first spring; 13. block; 14. insert rod; 15. guide column; 16. pressure block; 17. second spring. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In order to save replacement cost and facilitate the replacement of the inner sheath 5, as an embodiment of the utility model, Figures 1 to 4 As shown, the utility model discloses a blast furnace tuyere device for ironmaking, comprising an outer tuyere sleeve 1, an inner sleeve 5 is arranged inside the outer tuyere sleeve 1, a holder 2 is arranged on the outer side of the outer tuyere sleeve 1, a shell 8 is welded and fixed on both sides of the holder 2, an insert block 11 is arranged inside the two outer shells 8, connecting rods 9 are welded and fixed at the opposite ends of the two insert blocks 11, through holes matching the connecting rods 9 are provided on the two outer shells 8, first springs 12 are sleeved on the two connecting rods 9, slots matching the insert blocks 11 are provided on both sides of the holder 2 and the outer tuyere sleeve 1, The outer side of the holder 2 is integrally formed with two connecting seats 4, and both sides of the inner sleeve 5 are integrally formed with card blocks 13. The outer air outlet sleeve 1 is provided with two card slots adapted to the card blocks 13, and both sides of the inner sleeve 5 are provided with plug rods 14. The outer air outlet sleeve 1 is provided with two through grooves for the top ends of the plug rods 14 to pass through. The bottom ends of the two card blocks 13 are provided with slots adapted to the ends of the plug rods 14. The top ends of the two plug rods 14 are welded and fixed with guide pillars 15, and the two guide pillars 15 are sleeved with second springs 17. The top ends of the two guide pillars 15 are welded and fixed with pressure blocks 16.

[0027] When in use, the two connecting seats 4 are fixed to the blast furnace tuyere by bolts, and the inner sleeve 5 can protect the inner side of the outer tuyere sleeve 1. When the inner sleeve 5 needs to be replaced, the two connecting rods 9 are pulled, and the two connecting rods 9 drive the two plug blocks 11 to move away from the outer tuyere sleeve 1, so as to facilitate the removal of the outer tuyere sleeve 1. The two pressing blocks 16 are pressed, and the two pressing blocks 16 drive the two plug rods 14 to move, and the ends of the two plug rods 14 are disengaged from the two clamping blocks 13, so as to facilitate the separation of the inner sleeve 5 from the outer tuyere sleeve 1, and then facilitate the disassembly and replacement of the inner sleeve 5, which saves costs compared with the traditional method of replacing the entire tuyere sleeve.

[0028] In order to facilitate the cooling of the outer air inlet sleeve 1 and the inner jacket 5, for example, Figure 1 As shown, the outer air inlet sleeve 1 and the inner jacket 5 are both provided with cooling cavities, and the outer air inlet sleeve 1 and the inner jacket 5 are both provided with water inlets and water outlets.

[0029] When in use, cooling water enters the cooling chamber through the water inlet on the outer air inlet sleeve 1, and the water after absorbing heat is discharged from the water outlet on the outer air inlet sleeve 1, which is beneficial to the cooling of the outer air inlet sleeve 1. Cooling water enters the cooling chamber through the water inlet on the inner jacket 5, and the water after absorbing heat is discharged from the water outlet on the inner jacket 5, which is beneficial to the cooling of the inner jacket 5.

[0030] In order to facilitate the positioning of the outer air inlet sleeve 1, for example, Figure 1 As shown, a plurality of protrusions 3 are integrally formed on the outer side of the outer air inlet sleeve 1 , and a plurality of slots adapted to the protrusions 3 are formed on the inner side of the holder 2 .

[0031] In order to facilitate the positioning of the inner sheath 5, illustratively, as Figure 2 As shown, two protrusions 6 are integrally formed on the outer side of the inner sheath 5 , and two slots adapted to the protrusions 6 are provided on the inner side of the outer air inlet sleeve 1 .

[0032] In order to facilitate the removal of the inner sheath 5, illustratively, as Figure 2 As shown, the inner sheath 5 is provided with two grooves, and handles 7 are provided in the two grooves. The two handles 7 are integrally formed with the inner sheath 5 .

[0033] When in use, the two handles 7 are held to facilitate the inner sheath 5 to be pulled out from the outer air outlet sleeve 1 .

[0034] In order to facilitate pulling the connecting rod 9, exemplary, as Figure 3 As shown, the ends of the two connecting rods 9 away from the inner sheath 5 are both welded and fixed with stoppers 10 .

[0035] When the utility model is in use, the two connection seats 4 are fixed to the blast furnace tuyere by bolts, and the inner sheath 5 can protect the inner side of the outer tuyere sleeve 1;

[0036] The cooling water enters the cooling chamber through the water inlet on the outer air inlet sleeve 1, and the water after absorbing heat is discharged from the water outlet on the outer air inlet sleeve 1, which is beneficial to the cooling of the outer air inlet sleeve 1. The cooling water enters the cooling chamber through the water inlet on the inner jacket 5, and the water after absorbing heat is discharged from the water outlet on the inner jacket 5, which is beneficial to the cooling of the inner jacket 5.

[0037] When the inner sheath 5 needs to be replaced, pull the two connecting rods 9, and the two connecting rods 9 drive the two plug blocks 11 to move away from the outer air outlet sleeve 1, so as to facilitate the removal of the outer air outlet sleeve 1, and press the two pressure blocks 16, and the two pressure blocks 16 drive the two plug rods 14 to move, and the ends of the two plug rods 14 are disengaged from the two clamping blocks 13, so as to facilitate the separation of the inner sheath 5 from the outer air outlet sleeve 1, and then facilitate the disassembly and replacement of the inner sheath 5, which saves costs compared with the traditional method of replacing the entire air outlet sleeve.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A blast furnace tuyere device for ironmaking, characterized in that: The invention comprises an outer air inlet sleeve (1), wherein an inner protective sleeve (5) is arranged inside the outer air inlet sleeve (1), a holder (2) is arranged on the outer side of the outer air inlet sleeve (1), a shell (8) is fixed on both sides of the holder (2), an insert block (11) is arranged inside the two outer shells (8), connecting rods (9) are fixed on the opposite ends of the two insert blocks (11), through holes matching the connecting rods (9) are provided on the two outer shells (8), first springs (12) are sleeved on the two connecting rods (9), slots matching the insert blocks (11) are provided on both sides of the holder (2) and the outer air inlet sleeve (1), and the outer side of the holder (2) is integrally formed. The air outlet sleeve (1) has two connecting seats (4), the inner sleeve (5) has two integrally formed blocks (13) on both sides, the outer air outlet sleeve (1) has two slots adapted to the blocks (13), the inner sleeve (5) has two sides provided with plug rods (14), the outer air outlet sleeve (1) has two through slots for the top ends of the plug rods (14) to pass through, the bottom ends of the two blocks (13) have slots adapted to the ends of the plug rods (14), the top ends of the two plug rods (14) are fixed with guide posts (15), the two guide posts (15) are sleeved with second springs (17), and the top ends of the two guide posts (15) are fixed with pressure blocks (16).

2. A blast furnace tuyere device for ironmaking according to claim 1, characterized in that: The outer air inlet sleeve (1) and the inner protective sleeve (5) are both provided with a cooling cavity, and the outer air inlet sleeve (1) and the inner protective sleeve (5) are both provided with a water inlet and a water outlet.

3. The blast furnace tuyere device for ironmaking according to claim 1, characterized in that: The outer side of the outer air outlet sleeve (1) is integrally formed with a plurality of protrusions (3), and the inner side of the holder (2) is provided with a plurality of slots adapted to the protrusions (3).

4. The blast furnace tuyere device for ironmaking according to claim 1, characterized in that: The outer side of the inner protective sleeve (5) is integrally formed with two protrusions (6), and the inner side of the outer air outlet sleeve (1) is provided with two slots adapted to the protrusions (6).

5. The blast furnace tuyere device for ironmaking according to claim 1, characterized in that: The inner sheath (5) is provided with two grooves, and handles (7) are provided in the two grooves. The two handles (7) are integrally formed with the inner sheath (5).

6. A blast furnace tuyere device for ironmaking according to claim 1, characterized in that: Stoppers (10) are fixed to the ends of the two connecting rods (9) away from the inner sheath (5).

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