Cooling device for rotary joint of blast furnace gun

Abstract

The utility model provides a cooling device of a blast furnace gun rotary joint, the blast furnace gun rotary joint comprises a mud ramming mechanism and a rotary mechanism which are distributed in parallel up and down, the cooling device comprises a mud ramming cooling unit and a rotary cooling unit, the mud ramming cooling unit is of a housing type structure and is sleeved above the mud ramming mechanism, and the rotary cooling unit is arranged above the mud ramming mechanism. The rotary cooling unit is of an annular sleeve structure and sleeves the outer side of the rotary mechanism; a first liquid inlet of the mud-making cooling unit is communicated with an external circulating cooling water system, a first liquid outlet of the mud-making cooling unit is communicated with a second liquid inlet of the rotary cooling unit, and a second liquid outlet of the rotary cooling unit is used for outputting return water after heat exchange; and efficient cooling of the mud beating mechanism and the rotating mechanism is achieved, and continuous and stable operation of blast furnace production is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology, specifically relating to a cooling device for a rotary joint of a blast furnace mud gun. Background Technology

[0002] In blast furnace ironmaking, the mud gun is a crucial device for plugging the taphole in front of the furnace. Its rotary joint, as a core component of the hydraulic system, directly affects the positioning accuracy and mud-packing effect of the mud gun. However, due to the extremely high ambient temperature in front of the blast furnace, the rotary joint operates under high-temperature conditions for extended periods. Internal seals are prone to failure due to thermal aging, leading to frequent oil leaks or even complete malfunction. Currently, the replacement cycle for rotary joints in large blast furnaces is only 6 months. Each replacement requires 3 operators using tools such as gas cutting and chain hoists, taking approximately 4 hours. This not only consumes a significant amount of manpower but can also delay normal blast furnace tapping due to maintenance delays. Furthermore, if a sudden leak occurs in the rotary joint during production, the traditional structure lacks efficient cooling measures, resulting in excessively long troubleshooting times and further exacerbating production risks.

[0003] In existing technologies, rotary joints suffer from insufficient cooling efficiency and poor high-temperature resistance of their seals, resulting in low equipment reliability and high maintenance costs, which severely restricts the continuous and stable production of blast furnaces. Therefore, there is an urgent need for a rotary joint structure with efficient cooling capacity and easy maintenance to solve the industry problem of frequent maintenance in high-temperature environments. Utility Model Content

[0004] This invention provides a cooling device for a rotary joint of a blast furnace mud gun, which solves the problems of insufficient cooling efficiency and poor high-temperature resistance of the sealing components in the prior art.

[0005] This utility model provides a cooling device for a blast furnace mud gun rotary joint. The blast furnace mud gun rotary joint includes a mud-beating mechanism and a rotating mechanism arranged in parallel. It includes a mud-beating cooling unit and a rotating cooling unit. The mud-beating cooling unit is a cover-type structure and is sleeved above the mud-beating mechanism. The rotating cooling unit is an annular sleeve structure and is sleeved outside the rotating mechanism.

[0006] The first liquid inlet of the mud-blasting cooling unit is connected to the external circulating cooling water system, and the first liquid outlet of the mud-blasting cooling unit is connected to the second liquid inlet of the rotary cooling unit. The second liquid outlet of the rotary cooling unit is used to output the heat exchange return water.

[0007] Furthermore, the mud-blasting cooling unit also includes a first inlet pipe, a first cooling chamber, and a first outlet pipe; the cooling liquid output from the external circulating cooling water system enters the mud-blasting cooling unit and passes through the first inlet pipe, the first cooling chamber, and the first outlet pipe in sequence.

[0008] Furthermore, the circulating cooling unit also includes a second inlet pipe, a second cooling chamber, and a second outlet pipe; the cooling liquid output from the first outlet pipe enters the rotary cooling unit and then passes through the second inlet pipe, the second cooling chamber, and the second outlet pipe in sequence.

[0009] Furthermore, the first liquid inlet is positioned higher than the first liquid outlet, and the second liquid inlet is positioned higher than the second liquid outlet.

[0010] Furthermore, the first liquid inlet is connected to the outlet of the external circulating cooling water system via a flange, and the second liquid outlet of the rotary cooling unit is connected to the inlet of the external circulating cooling water system via a flange.

[0011] Furthermore, the sludge cooling unit is welded to the sludge-beating mechanism; and / or,

[0012] The rotary cooling unit is welded to the rotary mechanism.

[0013] Furthermore, the sludge cooling unit is connected to the sludge-beating mechanism via bolt threads; and / or,

[0014] The rotary cooling unit is welded to the rotary mechanism.

[0015] Compared with the prior art, the advantages of this utility model are as follows: by setting up an upper and lower split mud-beating cooling unit and a rotary cooling unit, efficient cooling of the mud-beating mechanism and the rotary mechanism is achieved; the cover-type mud-beating cooling unit and the annular sleeve structure rotary cooling unit can fit tightly with the corresponding components, significantly improving the cooling effect; the series-connected cooling water circuit design allows the cooling water to flow through the two cooling units in sequence, making reasonable use of the cooling medium; the modular split structure facilitates installation and maintenance, reducing the difficulty of maintenance; the compact overall design adapts to the narrow space in front of the blast furnace, effectively extending the service life of the rotary joint, reducing the number of equipment replacements, reducing labor intensity, and ensuring the continuous and stable operation of blast furnace production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembly of the blast furnace mud gun rotary joint and cooling device in one embodiment of the present invention;

[0017] Figure 2 This is a top view of the mud-cooling unit in one embodiment of the present invention;

[0018] Figure 3 This is a cross-sectional view of the mud-cooling unit in one embodiment of the present invention;

[0019] Figure 4 This is a top view of the rotary cooling unit in one embodiment of the present invention;

[0020] Figure 5This is a cross-sectional view of the rotary cooling unit in one embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Rotary joint; 11. Sludge removal mechanism; 12. Rotary mechanism; 2. Sludge removal and cooling unit; 21. First liquid inlet; 22. First liquid inlet pipe; 23. First cooling chamber; 24. First liquid outlet pipe; 25. First liquid outlet; 3. Rotary cooling unit; 31. Second liquid inlet; 32. Second liquid inlet pipe; 33. Second cooling chamber; 34. Second liquid outlet pipe; 35. Second liquid outlet. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Please see Figures 1-5 This utility model provides a cooling device for a blast furnace mud gun rotary joint. The blast furnace mud gun rotary joint 1 includes a mud-beating mechanism 11 and a rotating mechanism 12 arranged in parallel. It includes a mud-beating cooling unit 2 and a rotating cooling unit 3. The mud-beating cooling unit 2 is a cover-type structure and is sleeved on the mud-beating mechanism 11. The rotating cooling unit 3 is an annular sleeve structure and is sleeved on the outside of the rotating mechanism 12. The first liquid inlet 21 of the mud-beating cooling unit 2 is connected to an external circulating cooling water system. The first liquid outlet 25 of the mud-beating cooling unit 2 is connected to the second liquid inlet 31 of the rotating cooling unit 3. The second liquid outlet 35 of the rotating cooling unit 3 is used to output the heat exchange return water.

[0025] The cooling device for the rotary joint of the blast furnace mud gun provided by this utility model achieves efficient cooling of the mud-beating mechanism 11 and the rotating mechanism 12 by setting up an upper and lower split mud-beating cooling unit 2 and a rotating cooling unit 3. The mud-beating cooling unit 2 with a cover-type structure and the rotating cooling unit 3 with an annular sleeve structure can fit tightly to the corresponding components, significantly improving the cooling effect. The series-connected cooling water circuit design allows the cooling water to flow through the two cooling units in sequence, making reasonable use of the cooling medium. The modular split structure facilitates installation and maintenance, reducing the difficulty of maintenance. The compact overall design adapts to the narrow space in front of the blast furnace, effectively extending the service life of the rotary joint 1, reducing the number of equipment replacements, reducing labor intensity, and ensuring the continuous and stable operation of blast furnace production.

[0026] Specifically, the sludge-cleaning cooling unit 2 further includes a first inlet pipe 22, a first cooling chamber 23, and a first outlet pipe 24; the cooling liquid output from the external circulating cooling water system enters the sludge-cleaning cooling unit 2 and passes through the first inlet pipe 22, the first cooling chamber 23, and the first outlet pipe 24 in sequence. The circulating cooling unit also includes a second inlet pipe 32, a second cooling chamber 33, and a second outlet pipe 34; the cooling liquid output from the first outlet 25 enters the rotary cooling unit 3 and passes through the second inlet pipe 32, the second cooling chamber 33, and the second outlet pipe 34 in sequence. The position of the first inlet 21 is higher than that of the first outlet 25, and the position of the second inlet 31 is higher than that of the second outlet 35; this is more conducive to the flow of cooling water. The first inlet 21 is connected to the outlet of the external circulating cooling water system through a flange, and the second outlet 35 of the rotary cooling unit 3 is connected to the inlet of the external circulating cooling water system through a flange.

[0027] Optionally, the mud-beating and cooling unit 2 is welded to the mud-beating mechanism 11, and the rotary cooling unit 3 is welded to the rotary mechanism 12. In another specific embodiment, the mud-beating and cooling unit 2 is connected to the mud-beating mechanism 11 by bolt threads, and the rotary cooling unit 3 is welded to the rotary mechanism 12.

[0028] In use, the circulating cooling liquid first enters the mud-removing cooling unit 2, and after absorbing the heat from the mud-removing mechanism 11, the cooling liquid then enters the rotating mechanism 12 to absorb heat. After heat exchange, the return water returns to the external circulating cooling water system, forming a continuous cooling loop for circulation.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. If these modifications and variations fall within the scope of the claims of this utility model and their equivalents, they should be considered to be within the protection scope of this utility model.

Claims

1. A cooling device for a blast furnace clay gun rotary joint, the blast furnace clay gun rotary joint comprising a clay striking mechanism and a rotating mechanism arranged in parallel, characterized in that, The mud cooling unit is a shell structure and is arranged above the mud striking mechanism, and the rotary cooling unit is an annular sleeve structure and is arranged outside the rotary mechanism; The first liquid inlet of the mud cooling unit is communicated with the external circulating cooling water system, the first liquid outlet of the mud cooling unit is communicated with the second liquid inlet of the rotary cooling unit, and the second liquid outlet of the rotary cooling unit is used for outputting the backwater after heat exchange.

2. The cooling device of a blast furnace slurry cannon swivel joint according to claim 1, characterized in that, The mud cooling unit further comprises a first liquid inlet pipe, a first cooling chamber and a first liquid outlet pipe; the cooling liquid output by the external circulating cooling water system is sequentially passed through the first liquid inlet pipe, the first cooling chamber and the first liquid outlet pipe after being introduced into the mud cooling unit.

3. The cooling device for a rotary joint of a blast furnace clay gun according to claim 1, characterized in that, The circulating cooling unit further comprises a second liquid inlet pipe, a second cooling chamber and a second liquid outlet pipe; the cooling liquid output by the first liquid outlet is sequentially passed through the second liquid inlet pipe, the second cooling chamber and the second liquid outlet pipe after being introduced into the rotary cooling unit.

4. The cooling device for a rotary joint of a blast furnace clay gun according to claim 1, characterized in that, The position of the first liquid inlet is higher than that of the first liquid outlet, and the position of the second liquid inlet is higher than that of the second liquid outlet.

5. The cooling device for a rotary joint of a blast furnace clay gun according to claim 1, characterized in that, The first liquid inlet is connected with the outlet of the external circulating cooling water system through a flange, and the second liquid outlet of the rotary cooling unit is connected with the inlet of the external circulating cooling water system through a flange.

6. Cooling device for a rotary joint of a blast furnace clay gun according to any one of claims 1-5, characterized in that The mud cooling unit is welded with the mud striking mechanism; and / or, The rotary cooling unit is welded with the rotary mechanism.

7. Cooling device for a rotary joint of a blast furnace clay gun according to any one of claims 1-5, characterized in that The mud cooling unit is bolted with the mud striking mechanism; and / or, The rotary cooling unit is welded with the rotary mechanism.

Images