Novel ladle liner

The modular design of the lifting bag liner enables quick replacement when there is local wear, solving the problem of disassembling the entire lifting bag liner in traditional methods, and reducing production and time costs.

CN224444575UActive Publication Date: 2026-07-03JIAOZUO SENZE HIGH TEMPERATURE MATERIAL CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIAOZUO SENZE HIGH TEMPERATURE MATERIAL CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Traditional refractory linings need to be completely removed after local wear, resulting in waste of refractory materials and increased production costs.

Method used

It adopts a modular design, including components such as limit blocks, limit rods, and fire-resistant blocks, to achieve rapid partial replacement and installation.

Benefits of technology

It reduces the time and economic costs of industrial production and ensures the safety and stability of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a novel ladle bag lining relates to foundry melt container, for example, teeming ladle, tundish, pouring cup or similar technical field. The novel ladle bag lining, including the ladle shell, the upper side fixedly connected with the fixed ring of ladle shell is established with the thread structure at the inner surface of fixed ring, and the outer surface fixed sleeve of fixed ring has the flange plate, is established with a plurality of thread holes on the flange plate, a plurality of thread holes are annular array setting, and the bottom wall fixedly connected with eight limit insertion rods of ladle shell, and eight limit insertion rods are annular array setting, and the inside of ladle shell is provided with modularization lining mechanism, and the quick replacement of local lining can be realized through modularization lining mechanism, through this mode, can set up bag lining as modularization connection, and then when the local wear and tear of bag lining appears, the quick installation of bag lining, local replacement can be realized, makes the time cost and economic cost of industrial production decline.
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Description

Technical Field

[0001] This utility model relates to the field of casting molten material containers, such as ladles, tundishes, pouring cups or similar items, specifically a novel ladle liner. Background Technology

[0002] In the industrial field, a ladle is a large, specialized container used for transporting and holding high-temperature molten materials. It gets its name from the fact that it needs to be moved by hoisting equipment. It is widely used in industries such as metallurgy, casting, and chemicals, and is indispensable in the smelting processes of steel and non-ferrous metals. The lining of the ladle refers to the refractory and heat-insulating material layer laid inside the metal shell of the ladle. It is the core protective structure of the ladle. Its main function is to isolate the high-temperature molten material from direct contact with the metal shell, protect the shell from high-temperature damage, and maintain the stability of the material temperature. Therefore, it is called the "inner lining barrier" of the ladle.

[0003] During the use of the refractory liner, the liner is directly subjected to the scouring, erosion and thermal shock of the high-temperature molten material, and local wear, peeling or cracking are likely to occur. Since the traditional liner and the outer shell of the refractory liner are integral structures formed by masonry or casting, once a part is damaged, the entire liner needs to be broken up and dismantled and reconstructed. This not only causes a lot of waste of refractory materials, but also takes a lot of time, significantly increasing the time and economic costs of industrial production. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a new type of lifting bag liner with the function of setting the liner as a modular connection, so that when the liner is worn in a certain part, the liner can be quickly installed and partially replaced, thereby reducing the time and economic costs of industrial production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel lifting bag liner, comprising a lifting bag shell, a fixing ring fixedly connected to the upper side of the lifting bag shell, and a threaded structure on the inner surface of the fixing ring;

[0006] A flange is fixedly fitted onto the outer surface of the retaining ring. The flange has several threaded holes arranged in a ring array.

[0007] Eight limiting rods are fixedly connected to the bottom wall of the lifting bag shell. The eight limiting rods are arranged in a circular array. The interior of the lifting bag shell is equipped with a modular inner lining mechanism, which enables rapid replacement of local inner linings.

[0008] The modular lining mechanism includes a limiting block, eight limiting rod slots, a fire-resistant base block, ten limiting inserts, ten connecting blocks, ten fire-resistant blocks, ten limiting insert slots, ten limiting ring slots, a connecting ring, a fire-resistant ring, and a limiting ring.

[0009] Preferably, the limiting block is installed on the bottom wall of the lifting bag shell, and eight limiting rod slots are formed on the lower side of the limiting block;

[0010] The eight limiting rod slots are arranged in a circular array, and the eight limiting rod slots are respectively adapted to the eight limiting rods to form a plug-in connection.

[0011] Preferably, the lower side of the limiting block is in contact with the bottom wall of the lifting bag shell, and the refractory bottom block is fixedly connected to the upper side of the limiting block;

[0012] All ten limiting blocks are fixedly connected to the upper side of the refractory base block. The ten limiting blocks are arranged in a circular array, and all ten connecting blocks are installed on the upper side of the refractory base block.

[0013] Preferably, the ten connecting blocks are arranged in a circular array, and the ten connecting blocks are spliced ​​together to form a complete ring;

[0014] The connecting block fits into the inner surface of the outer shell of the lifting bag, and ten refractory blocks are fixedly connected to the inner wall of the ten connecting blocks respectively.

[0015] Preferably, the ten limiting plug slots are respectively opened on the lower side of the ten connecting blocks, and the ten limiting plug slots are respectively adapted to the ten limiting plugs to form a plug connection;

[0016] Ten limiting ring grooves are respectively opened on the upper side of the ten connecting blocks, and the ten limiting ring grooves are connected to form an annular groove;

[0017] The connecting ring is installed inside the outer shell of the lifting package, and the outer surface of the connecting ring is provided with a threaded structure.

[0018] Preferably, the inner surfaces of the connecting ring and the fixed ring are threaded together, and the fire-resistant ring is fixedly connected to the inner surface of the connecting ring;

[0019] The limiting ring is fixedly connected to the lower side of the connecting ring, and the lower side of the limiting ring extends into the interior of the limiting ring groove.

[0020] Preferably, the ten refractory blocks are spliced ​​together to form a complete cylindrical working surface. The contact surfaces between the refractory blocks, between the refractory blocks and the refractory base block, and between the refractory blocks and the refractory ring are all sealed with refractory adhesive to ensure that the high-temperature resistant materials do not leak.

[0021] Preferably, the outer wall of the limiting rod is in close contact with the inner wall of the limiting rod groove, and after the limiting rod is inserted into the limiting rod groove, the gap between the two is no more than 0.1mm, so as to improve the positioning accuracy of the limiting block at the bottom of the lifting bag shell.

[0022] Preferably, the refractory adhesive has a temperature resistance of not less than 1500℃ to ensure the connection stability of the refractory ring in a high-temperature environment.

[0023] Preferably, the refractory adhesive is applied with a uniform thickness on each contact surface, and the application area covers the entire contact surface to ensure the integrity of the seal.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] (1) The new type of lifting bag liner can be set as a modular connection, so that when the liner is worn in a certain part, the liner can be quickly installed and partially replaced, thereby reducing the time and economic costs of industrial production.

[0026] (2) The contact surfaces between refractory blocks, between refractory blocks and refractory base blocks, and between refractory blocks and refractory rings are all sealed with refractory adhesive to ensure that high-temperature resistant materials do not leak inside the device, thus ensuring the normal use and safety of the device. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Figure 1 This is a schematic diagram of a novel bag-lifting lining structure according to the present invention;

[0029] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the lifting bag shell of this utility model;

[0030] Figure 3 This is a schematic diagram of the cross-sectional connection structure between the limiting block and the refractory base block of this utility model;

[0031] Figure 4 This is a schematic diagram of the cross-sectional connection structure of the connecting block and connecting ring of this utility model.

[0032] Reference numerals in the attached drawings: 1. Lifting package outer shell; 2. Fixing ring; 3. Flange; 4. Limiting rod; 5. Limiting block; 6. Limiting rod groove; 7. Fire-resistant base block; 8. Limiting block; 9. Connecting block; 10. Fire-resistant block; 11. Limiting block groove; 12. Limiting ring groove; 13. Connecting ring; 14. Fire-resistant ring; 15. Limiting ring. Detailed Implementation

[0033] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] Please see Figure 1-4 This utility model provides a new technical solution: a novel lifting bag liner, including a lifting bag shell 1, a fixing ring 2 fixedly connected to the upper side of the lifting bag shell 1, the inner surface of the fixing ring 2 having a threaded structure, and a flange 3 fixedly sleeved on the outer surface of the fixing ring 2, the flange 3 having a plurality of threaded holes arranged in a ring array, eight limiting rods 4 fixedly connected to the bottom wall of the lifting bag shell 1, the eight limiting rods 4 arranged in a ring array, and a modular inner liner mechanism provided inside the lifting bag shell 1, which enables rapid replacement of partial inner liners. The modular inner liner mechanism includes a limiting block 5, eight limiting rod slots 6, a fire-resistant bottom block 7, ten limiting blocks 8, ten connecting blocks 9, ten fire-resistant blocks 10, ten limiting block slots 11, ten limiting ring slots 12, a connecting ring 13, a fire-resistant ring 14, and a limiting ring 15.

[0038] Furthermore, the limiting block 5 is installed on the bottom wall of the lifting bag shell 1. Eight limiting rod slots 6 are formed on the lower side of the limiting block 5, arranged in a circular array. The eight limiting rod slots 6 are respectively adapted to the eight limiting rods 4 to form an insertion connection. The lower side of the limiting block 5 is in contact with the bottom wall of the lifting bag shell 1. The fire-resistant bottom block 7 is fixedly connected to the upper side of the limiting block 5. Ten limiting blocks 8 are all fixedly connected to the upper side of the fire-resistant bottom block 7, arranged in a circular array. Ten connecting blocks 9 are all installed on the upper side of the fire-resistant bottom block 7, arranged in a circular array. The ten connecting blocks 9 are spliced ​​into a complete ring, and the connecting blocks 9 are in contact with the inner surface of the lifting bag shell 1. Ten fire-resistant blocks 10 are respectively fixedly connected to the inner walls of the ten connecting blocks 9. Ten limiting block slots 11 are respectively formed on the ten connecting blocks. On the lower side of block 9, ten limiting insert slots 11 are respectively adapted to ten limiting inserts 8 to form an insertion connection. Ten limiting ring slots 12 are respectively opened on the upper side of ten connecting blocks 9. The ten limiting ring slots 12 are connected to form an annular groove. The connecting ring 13 is installed inside the lifting bag shell 1. The outer surface of the connecting ring 13 is provided with a threaded structure. The connecting ring 13 is threadedly connected to the inner surface of the fixing ring 2. The fireproof ring 14 is fixedly connected to the inner surface of the connecting ring 13. The limiting ring 15 is fixedly connected to the lower side of the connecting ring 13. The lower side of the limiting ring 15 extends into the interior of the limiting ring slot 12. The ten fireproof blocks 10 are spliced ​​to form a complete cylindrical working surface. The contact surfaces between fireproof blocks 10, between fireproof blocks 10 and fireproof base blocks 7, and between fireproof blocks 10 and fireproof rings 14 are all sealed with fireproof adhesive to ensure that high-temperature resistant materials do not leak.

[0039] Furthermore, the outer shell 1 of the lifting bag serves as the main structure of the entire device. The fixing ring 2, which is fixedly connected to the upper side, is threadedly connected to the outer surface of the connecting ring 13 through the threaded structure on the inner surface. At the same time, the flange 3, which is fixedly sleeved on the outer surface of the fixing ring 2, can be used to connect and fix with other equipment or components to ensure the overall stability of the lifting bag. Eight limiting rods 4, which are fixedly connected in a ring array on the bottom wall of the lifting bag shell 1, are inserted into eight limiting rod slots 6, which are in a ring array and adapted to the limiting block 5 installed on the bottom wall of the lifting bag shell 1. This achieves precise positioning and initial fixation of the limiting block 5 at the bottom of the lifting bag shell 1. The lower side of the limiting block 5 fits against the bottom wall of the lifting bag shell 1 to ensure the stability of the bottom structure. The fire-resistant bottom block 7 is fixedly connected to the upper side of the limiting block 5 to provide bottom fire-resistant support for the entire inner lining structure.

[0040] Ten limiting blocks 8, arranged in a ring array, are fixedly connected to the upper side of the refractory base block 7. These blocks are inserted into ten matching limiting block slots 11 located on the lower side of ten connecting blocks 9, also arranged in a ring array on the upper side of the refractory base block 7. This achieves precise positioning and initial fixation of the connecting blocks 9 on the refractory base block 7. The ten connecting blocks 9 are assembled into a complete ring, fitting snugly against the inner surface of the lifting shell 1. Ten refractory blocks 10 are fixedly connected to the inner walls of the ten connecting blocks 9. The ten refractory blocks 10 are assembled to form a complete cylindrical working surface for direct... The connecting ring 13, which comes into contact with and contains high-temperature materials, plays a fire-resistant protection role. It is installed inside the outer shell 1 of the lifting bag and is fixed to the fixing ring 2 by a threaded connection. The fire-resistant ring 14, which is fixedly connected to its inner surface, is fixed together with the connecting ring 13. The limiting ring 15, which is fixedly connected to the lower side of the connecting ring 13, extends into the ten limiting ring grooves 12 opened on the upper side of the ten connecting blocks 9, further limiting and fixing the connecting blocks 9 and the fire-resistant blocks 10 to prevent them from moving during operation. At the same time, the connecting ring 13 can also press and limit the connecting blocks 9.

[0041] The contact surfaces between refractory blocks 10, between refractory blocks 10 and refractory base blocks 7, and between refractory blocks 10 and refractory rings 14 are all sealed with refractory adhesive to ensure that high-temperature resistant materials do not leak inside the device, thus guaranteeing the normal use and safety of the device. When a refractory block 10 is damaged, due to the modular design, it is only necessary to remove the corresponding connecting block 9 from the insertion structure of the limiting insert block 8 and the limiting insert block slot 11, and replace the new connecting block 9 and refractory block 10. There is no need to replace the entire lining, which enables quick and convenient partial lining replacement, reducing maintenance costs and time.

[0042] Furthermore, this method allows for modular connections of the liner, enabling rapid installation and partial replacement of the liner when local wear occurs, thereby reducing the time and economic costs of industrial production.

[0043] Structural Description: Lifting Bag Outer Shell 1: As the main structure of the entire lifting bag lining device, it is the basic frame that supports all other components, provides installation space for the internal lining mechanism, protects the internal structure, and withstands certain external forces to ensure the structural integrity of the entire lifting bag during use.

[0044] Fixed ring 2: It is fixedly connected to the upper side of the lifting shell 1. Its inner surface has a threaded structure. The threaded structure on the inner surface is connected to the threaded structure on the outer surface of the connecting ring 13 to fix the connecting ring 13 to the lifting shell 1. At the same time, it provides an installation position for the flange 3.

[0045] Flange 3: It is fixedly sleeved on the outer surface of the fixing ring 2, and has several threaded holes arranged in a ring array. The threaded holes are used to connect and fix it with other equipment or components, such as the hoisting device for lifting bags, to ensure the overall stability of the lifting bag and prevent it from shaking or shifting during operation.

[0046] Limiting rod 4: Fixedly connected to the bottom wall of the lifting bag shell 1, there are eight of them arranged in a ring array, inserted into the limiting rod slot 6 on the lower side of the limiting block 5, so as to achieve precise positioning and initial fixation of the limiting block 5 at the bottom of the lifting bag shell 1, prevent the limiting block 5 from moving during the operation, and ensure the stability of the bottom lining structure.

[0047] Limiting block 5: Installed on the bottom wall of the lifting bag shell 1, it provides an installation base for the refractory base block 7. Its lower side fits against the bottom wall of the lifting bag shell 1, further enhancing the stability of the bottom structure. At the same time, it cooperates with the limiting rod 4 through the limiting rod groove 6 to fix itself at the bottom of the lifting bag shell 1.

[0048] Limiting rod slots 6: These are located on the lower side of the limiting block 5. There are eight of them arranged in a circular array. They are adapted to the eight limiting rods 4 respectively and form a plug-in structure with the limiting rods 4 to position and fix the limiting block 5, ensuring that the limiting block 5 is accurately and stably positioned at the bottom of the lifting shell 1.

[0049] Refractory base block 7: It is fixedly connected to the upper side of the limiting block 5, providing bottom refractory support for the entire inner lining structure, directly bearing the impact and erosion of high temperature materials on the bottom, and protecting the bottom of the lifting bag shell 1 from high temperature damage.

[0050] Limiting blocks 8: There are ten limiting blocks 8 in total, all of which are fixedly connected to the upper side of the refractory base block 7 and arranged in a circular array. They are inserted into the limiting block slots 11 on the lower side of the connecting block 9 respectively, so as to achieve precise positioning and initial fixation of the connecting block 9 on the refractory base block 7, and ensure that the connecting block 9 is accurately positioned on the refractory base block 7 and will not move easily.

[0051] Connecting Block 9: There are ten connecting blocks 9 in total, all installed on the upper side of the refractory base block 7, arranged in a ring array, spliced ​​into a complete ring, and attached to the inner surface of the lifting shell 1. They serve as the installation carrier for the refractory blocks 10, connecting the ten refractory blocks 10 into a whole. At the same time, by attaching to the inner surface of the lifting shell 1, they enhance the connection stability between the inner lining structure and the lifting shell 1. Furthermore, through the cooperation of the limiting insert groove 11 with the limiting insert 8 and the limiting ring groove 12 with the limiting ring 15, they achieve precise positioning and fixation in the inner lining structure.

[0052] Refractory Block 10: There are ten refractory blocks 10, which are fixedly connected to the inner walls of ten connecting blocks 9, and spliced ​​together to form a complete cylindrical working surface. They directly contact and hold high-temperature materials, play a fire-resistant protection role, prevent high-temperature materials from damaging the inside of the lifting bag shell 1, and protect the service life of the lifting bag shell 1.

[0053] Limiting insertion slots 11: These slots are located on the underside of ten connecting blocks 9. Each slot is adapted to one of the ten limiting insertion blocks 8 to form an insertion connection. In conjunction with the limiting insertion blocks 8, the slots fix and position the connecting blocks 9 on the fire-resistant base block 7, ensuring that the connecting blocks 9 are installed accurately and stably.

[0054] Limiting ring groove 12: Each of the ten connecting blocks 9 is opened on the upper side, and there are ten in total. They are connected to form an annular groove, which cooperates with the limiting ring 15 to further limit and fix the connecting blocks 9 and the refractory blocks 10, prevent them from moving during operation, and enhance the overall stability of the lining structure.

[0055] Connecting ring 13: Installed inside the outer shell 1 of the lifting bag, with a threaded structure on its outer surface, it is fixed to the fixing ring 2 by threaded connection, fixing the fire-resistant ring 14 and the limiting ring 15 inside the outer shell 1 of the lifting bag, while pressing and limiting the connecting block 9 to enhance the overall connection strength and stability of the inner lining structure.

[0056] Fire-resistant ring 14: It is fixedly connected to the inner surface of the connecting ring 13 and together with the fire-resistant block 10, it forms a complete fire-resistant lining. It is in direct contact with high-temperature materials and plays a fire-resistant protection role, preventing high-temperature materials from damaging the connecting ring 13 and other components.

[0057] Limiting ring 15: It is fixedly connected to the lower side of the connecting ring 13, and its lower side extends into the interior of the limiting ring groove 12 to further limit and fix the connecting block 9 and the refractory block 10, prevent them from moving during operation, and ensure the stability of the lining structure.

[0058] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A novel lifting bag liner, comprising a lifting bag shell (1), wherein a fixing ring (2) is fixedly connected to the upper side of the lifting bag shell (1), and the inner surface of the fixing ring (2) is provided with a threaded structure; A flange (3) is fixedly sleeved on the outer surface of the fixing ring (2). Several threaded holes are opened on the flange (3), and the several threaded holes are arranged in a ring array. Eight limiting insertion rods (4) are fixedly connected on the bottom wall of the ladle shell (1), and the eight limiting insertion rods (4) are arranged in a ring array, characterized in that: The interior of the lifting bag shell (1) is equipped with a modular inner lining mechanism, which enables rapid replacement of local inner linings. The modular lining mechanism includes a limiting block (5), eight limiting rod slots (6), a fire-resistant bottom block (7), ten limiting blocks (8), ten connecting blocks (9), ten fire-resistant blocks (10), ten limiting block slots (11), ten limiting ring slots (12), a connecting ring (13), a fire-resistant ring (14), and a limiting ring (15).

2. A novel ladle liner as claimed in claim 1, wherein: The limiting block (5) is installed on the bottom wall of the lifting bag shell (1), and eight limiting rod slots (6) are opened on the lower side of the limiting block (5); The eight limiting rod slots (6) are arranged in a circular array, and the eight limiting rod slots (6) are respectively adapted to the eight limiting rods (4) to form a plug-in connection.

3. A novel ladle liner as claimed in claim 2, wherein: The lower side of the limiting block (5) is in contact with the bottom wall of the lifting bag shell (1), and the fire-resistant bottom block (7) is fixedly connected to the upper side of the limiting block (5). Ten limiting blocks (8) are fixedly connected to the upper side of the fire-resistant base block (7). The ten limiting blocks (8) are arranged in a ring array. Ten connecting blocks (9) are installed on the upper side of the fire-resistant base block (7).

4. A novel ladle liner as claimed in claim 3, wherein: The ten connecting blocks (9) are arranged in a circular array, and the ten connecting blocks (9) are spliced ​​together to form a complete ring; The connecting block (9) is attached to the inner surface of the outer shell (1) of the lifting bag, and ten refractory blocks (10) are fixedly connected to the inner wall of the ten connecting blocks (9).

5. A novel ladle liner as claimed in claim 1, wherein: Ten limiting plug slots (11) are respectively opened on the lower side of ten connecting blocks (9), and the ten limiting plug slots (11) are respectively adapted to the ten limiting plugs (8) to form a plug connection; Ten limiting ring grooves (12) are respectively opened on the upper side of ten connecting blocks (9), and the ten limiting ring grooves (12) are connected to form an annular groove; The connecting ring (13) is installed inside the outer shell (1) of the lifting bag, and the outer surface of the connecting ring (13) is provided with a threaded structure.

6. A novel ladle liner as claimed in claim 5, wherein: The connecting ring (13) is threadedly connected to the inner surface of the fixing ring (2), and the fire-resistant ring (14) is fixedly connected to the inner surface of the connecting ring (13); The limiting ring (15) is fixedly connected to the lower side of the connecting ring (13), and the lower side of the limiting ring (15) extends into the interior of the limiting ring groove (12).

7. A novel ladle liner as claimed in claim 4, wherein: The ten refractory blocks (10) are spliced ​​together to form a complete cylindrical working surface. The contact surfaces between the refractory blocks (10), between the refractory blocks (10) and the refractory base block (7), and between the refractory blocks (10) and the refractory ring (14) are all sealed with refractory adhesive to ensure that the high-temperature resistant materials do not leak.

8. A novel ladle liner as claimed in claim 1, wherein: The outer wall of the limiting rod (4) fits tightly against the inner wall of the limiting rod groove (6). After the limiting rod (4) is inserted into the limiting rod groove (6), the gap between the two is no more than 0.1mm, so as to improve the positioning accuracy of the limiting block (5) at the bottom of the lifting bag shell (1).

9. A novel ladle liner as claimed in claim 7, wherein: The refractory adhesive has a temperature resistance of not less than 1500℃, ensuring the connection stability of the refractory ring (14) in a high-temperature environment.

10. A novel ladle liner as claimed in claim 7, wherein: The refractory adhesive is applied evenly to each contact surface, and the application area covers the entire contact surface to ensure the integrity of the seal.