Intermediate frequency furnace lining structure

Abstract

The utility model discloses a medium frequency furnace furnace lining structure relates to medium frequency furnace technical field. This medium frequency furnace furnace lining structure, medium frequency furnace furnace lining structure, including at least two groups of firebrick furnace lining, refractory layer and reinforcing structure, firebrick furnace lining is by brick block one, brick block three and at least one group's brick block two, and the refractory layer sets up on two groups of firebrick furnace lining, and the refractory layer is by brick block four, brick block six and at least one group's brick block five, and the reinforcing structure sets up between two groups of firebrick furnace lining. This medium frequency furnace furnace lining structure can divide furnace lining structure into multiple parts, and the different thermal stress, mechanical stress and chemical corrosion degree that furnace lining different parts bear are carried out the maintenance and the maintenance of differentiation, avoid the furnace lining upper part condition to be good, only because the lower part serious erosion is whole replacement entire furnace lining, effectively reduced the use cost, and when dismounting, because multiple firebrick furnace linings have the gap, only need to dismount refractory layer and can operate by sawing reinforcing structure.

Description

Technical Field

[0001] This utility model relates to the field of medium-frequency furnace technology, and in particular to the furnace lining structure of medium-frequency furnaces. Background Technology

[0002] Chinese patent document CN217953085U discloses a prefabricated furnace lining for a series resonant medium-frequency induction melting furnace, comprising a furnace body and a base layer. The base layer is located at the bottom inner side of the furnace body, and the furnace lining is located at the top of the base layer. The furnace lining is composed of multiple sets of stacked and fixed bushing rings. Each set of bushing rings contains multiple sets of end-to-end connected lining block structures. Each set of lining block structures includes a lining block body, connecting ribs fixed within each lining block body, fastening ribs fixedly connected to the outside of each connecting rib, and a positioning rod located at the top of the lining block body. Each lining block body has a mating hole on its inner side wall and a protrusion structure adapted to the size of the locking groove on the other side. The connecting ribs in each set of bushing rings are used to connect and fix the lining block bodies to the inner fastening ribs. The lining block bodies in the same set of bushing rings are combined and connected to achieve an integrated connection, which facilitates direct on-site installation after prefabrication and improves structural stability.

[0003] The aforementioned prefabricated furnace lining for a series resonant medium-frequency induction melting furnace has a different condition due to the inconsistent temperature between the upper and lower parts of the furnace lining during use. The lower part of the furnace lining is severely corroded during use, and even if the upper part of the furnace lining is still in good condition, the entire furnace lining needs to be replaced, which will cause some unnecessary losses. Utility Model Content

[0004] The purpose of this utility model is to provide a furnace lining structure for medium-frequency furnaces, which can solve the problem that the lower part of the furnace lining is severely eroded during use, and even if the upper part of the furnace lining is still in good condition, the entire furnace lining needs to be replaced, which will cause some unnecessary losses.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a medium-frequency furnace lining structure, comprising at least two sets of refractory brick linings, a refractory layer, and a reinforcing structure. The refractory brick lining is composed of brick 1, brick 3, and at least one set of brick 2. The refractory layer is disposed on the two sets of refractory brick linings and is composed of brick 4, brick 6, and at least one set of brick 5. The reinforcing structure is disposed between the two sets of refractory brick linings to reinforce the upper refractory brick lining.

[0006] Preferably, a locking block is fixedly installed on one side of the brick, and a locking block is opened on the other side of the brick. Adjacent bricks are engaged by the locking block and the slot. A positioning hole is opened on the top of the brick, and a locking post is inserted into the positioning hole.

[0007] Preferably, a locking block 2 is fixedly installed on one side of the second brick, and a locking groove 2 is opened on the other side of the second brick. Adjacent second bricks are locked together by the locking block 2 and the locking groove 2. Positioning holes are opened at the top and bottom of the second brick. A locking post 1 is inserted into a group of second bricks located at the bottom. A locking post 2 is inserted into the positioning hole at the top of the second brick. The upper and lower groups of second bricks are connected by the locking post 2.

[0008] Preferably, a locking block three is fixedly installed on one side of the brick three, and a locking groove three is opened on the other side of the brick three. Adjacent brick threes are locked together by the locking block three and the locking groove three. A slot is opened at the bottom of the brick three, and a locking post two is inserted into the slot and the positioning hole of the upper brick two.

[0009] Preferably, the brick four is fixedly installed on the inner wall of the brick three of the refractory brick furnace lining below. A locking block four is fixedly installed on one side of the brick four, and a locking groove four is opened on the other side of the brick four. Adjacent bricks four are locked together by the locking block four and the locking groove four. A positioning groove is opened on the top of the brick four, and a locking post three is inserted in the positioning groove.

[0010] Preferably, a locking block 5 is fixedly installed on one side of the brick 5, and a locking groove 5 is opened on the other side of the brick 5. Adjacent bricks 5 are locked together by the locking block 5 and the locking groove 5. Positioning cavities are opened at the top and bottom of the brick 5. The locking post 3 is inserted into the bottom group of bricks 5. The locking post 4 is inserted into the positioning cavity at the top of the brick 5. The upper and lower groups of bricks 5 are connected by the locking post 4.

[0011] Preferably, the brick six is ​​fixedly installed on the inner wall of the brick one of the upper refractory brick lining. A locking block six is ​​fixedly installed on one side of the brick six, and a locking groove six is ​​opened on the other side of the brick six. Adjacent bricks six are locked together by the locking block six and the locking groove six. A column groove is opened at the bottom of the brick six. A locking post four is inserted into the column groove and the positioning cavity of the upper brick five. A guide slope is provided on both brick four and brick six.

[0012] Preferably, the reinforcing structure includes a circular ring, a first reinforcing bar, and a second reinforcing bar. The circular ring is fixedly installed at the bottom of the first reinforcing bar, and the second reinforcing bar is fixedly installed at the top of the first reinforcing bar. A square groove is opened at the top of the third brick of the lower refractory brick lining, and a square opening is opened at the bottom of the first brick of the upper refractory brick lining. The circular ring is inserted into the square groove, and the second reinforcing bar is inserted into the square opening.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This medium-frequency furnace lining structure, through the combined use of refractory brick lining, refractory layer, and reinforcement structure, can divide the lining structure into multiple upper and lower parts. The replacement frequency of each part can be adjusted according to the different temperatures inside the medium-frequency furnace. This allows for differentiated inspection and maintenance based on the varying degrees of thermal stress, mechanical stress, and chemical corrosion experienced by different parts of the lining. This avoids replacing the entire lining when the upper part is still in good condition, even if the lower part is severely corroded. This effectively reduces operating costs. Furthermore, due to the gaps between the multiple refractory brick linings, disassembly only requires removing the refractory layer and sawing off the reinforcement structure, significantly improving the ease of replacement and enhancing the practicality of the lining structure. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a front sectional perspective view of the present invention;

[0018] Figure 3 This is a perspective view of brick one of the present utility model;

[0019] Figure 4 This is a perspective view of brick block two of this utility model;

[0020] Figure 5 This is a perspective view of brick three of this utility model;

[0021] Figure 6 This is a perspective view of brick four of this utility model;

[0022] Figure 7 This is a perspective view of brick five of this utility model;

[0023] Figure 8 This is a perspective view of brick six of this utility model.

[0024] Attached reference numerals: 1. Refractory brick furnace lining; 101. Brick 1; 102. Brick 2; 103. Brick 3; 2. Refractory layer; 201. Brick 4; 202. Brick 5; 203. Brick 6; 3. Reinforcing structure; 301. Circular strip; 302. Reinforcing bar 1; 303. Reinforcing bar 2; 4. Guide slope; 5. Locking block 1; 6. Locking groove 1; 7. Locking column 1; 8. Locking block 2; 9. Locking groove 2; 10. Locking column 2; 11. Locking block 3; 12. Locking groove 3; 13. Locking column 3; 14. Locking block 4; 15. Locking groove 4; 16. Locking column 4; 17. Locking block 5; 18. Locking groove 5; 19. Locking groove 6; 20. Locking block 6. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-8 This utility model provides a technical solution: a medium-frequency furnace lining structure, including at least two sets of refractory brick linings 1, a refractory layer 2, and a reinforcing structure 3. The refractory brick lining 1 is composed of brick 101, brick 3103, and at least one set of brick 2102. The refractory layer 2 is disposed on the two sets of refractory brick linings 1 and is composed of brick 4201, brick 6203, and at least one set of brick 5202. The reinforcing structure 3 is disposed between the two sets of refractory brick linings 1 and is used to reinforce the upper refractory brick lining 1.

[0027] A locking block 5 is fixedly installed on one side of brick 101, and a locking block 5 is also opened on the other side of brick 101. Adjacent bricks 101 are engaged by locking blocks 5 and slots 6. A positioning hole is opened on the top of brick 101, and a locking post 7 is inserted into the positioning hole. A locking block 2 8 is fixedly installed on one side of brick 202, and a slot 2 9 is opened on the other side of brick 202. Adjacent bricks 202 are engaged by locking blocks 2 8 and slots 2 9. Positioning openings are opened on the top and bottom of brick 202. A locking post 7 is inserted into the bottom group of bricks 202. A locking post 2 10 is inserted into the positioning opening at the top of brick 202. The upper and lower groups of bricks 202 are connected by locking posts 2 10. One side of brick 303 is fixed. A locking block 311 is installed on one side of brick 3103, and a locking groove 312 is opened on the other side. Adjacent bricks 3103 are engaged by locking block 311 and locking groove 312. A groove is opened at the bottom of brick 3103, and locking posts 210 are inserted into the groove and the positioning opening of brick 2102 above. Brick 4201 is fixedly installed on the inner wall of brick 3103 of the lower refractory brick lining 1. A locking block 414 is fixedly installed on one side of brick 4201, and a locking groove 415 is opened on the other side of brick 4201. Adjacent bricks 4201 are engaged by locking block 414 and locking groove 415. A positioning groove is opened at the top of brick 4201, and a locking post 313 is inserted into the positioning groove. A locking block 517 is fixedly installed on one side of brick 5202, and the other side of brick 5202 is engaged by locking block 517. A slot 518 is provided on the side. Adjacent bricks 5202 are engaged by a locking block 517 and a slot 518. Positioning cavities are provided at the top and bottom of bricks 5202. A locking post 313 is inserted into the bottom group of bricks 5202. A locking post 416 is inserted into the positioning cavity at the top of bricks 5202. The upper and lower groups of bricks 5202 are connected by locking posts 416. Brick 6203 is fixedly installed on the inner wall of brick 101 of the upper refractory brick lining 1. A locking block 620 is fixedly installed on one side of brick 6203. A slot 619 is provided on the other side of brick 6203. Adjacent bricks 6203 are engaged by a locking block 620 and a slot 619. A column groove is provided at the bottom of brick 6203. The column groove and the positioning of the upper brick 5202 are connected. The cavity is equipped with a retaining post 4 16, and both brick 4 201 and brick 6 203 are provided with guide slopes 4. The reinforcing structure 3 includes a ring strip 301, a first reinforcing bar 302, and a second reinforcing bar 303. The ring strip 301 is fixedly installed at the bottom of the first reinforcing bar 302, and the second reinforcing bar 303 is fixedly installed at the top of the first reinforcing bar 302. The top of the third brick 103 of the lower refractory brick lining 1 has a square groove, and the bottom of the first brick 101 of the upper refractory brick lining 1 has a square opening. The ring strip 301 is inserted into the square groove, and the second reinforcing bar 303 is inserted into the square opening. When a set of refractory brick lining 1 needs to be disassembled, the refractory layer 2 is first removed, and the reinforcing structure 3 is cut and disassembled using a hand saw. Then the refractory brick lining 1 can be disassembled, which can divide the lining structure into multiple upper and lower parts.The replacement frequency of the upper and lower parts can be adjusted according to the different temperatures inside the medium-frequency furnace. This allows for differentiated inspection and maintenance based on the varying degrees of thermal stress, mechanical stress, and chemical corrosion experienced by different parts of the furnace lining. This avoids replacing the entire furnace lining when the upper part is still in good condition, even if the lower part is severely corroded. This effectively reduces operating costs. Furthermore, due to the gaps between the multiple refractory bricks in the furnace lining 1, disassembly only requires removing the refractory layer 2 and sawing off the reinforcing structure 3, significantly improving the ease of replacement and enhancing the practicality of the furnace lining structure.

[0028] Working principle: When a set of refractory brick furnace lining 1 needs to be disassembled, first remove the refractory layer 2 and use a hand saw to cut and disassemble the reinforcing structure 3, and then the refractory brick furnace lining 1 can be disassembled.

[0029] 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 structure of a lining of an intermediate frequency furnace, characterized in that, include: There are at least two sets of refractory brick furnace linings (1), which are composed of brick one (101), brick three (103) and at least one set of brick two (102); The refractory layer (2) is set on two sets of refractory brick furnace linings (1). The refractory layer (2) is composed of brick four (201), brick six (203) and at least one set of brick five (202). The reinforcing structure (3) is set between the two sets of refractory brick furnace linings (1) to reinforce the upper refractory brick furnace lining (1).

2. The intermediate frequency furnace lining structure according to claim 1, characterized in that: A locking block (5) is fixedly installed on one side of the brick (101), and a locking block (5) is opened on the other side of the brick (101). Adjacent bricks (101) are engaged by locking block (5) and slot (6). A positioning hole is opened on the top of the brick (101), and a locking post (7) is inserted into the positioning hole.

3. The intermediate frequency furnace lining structure according to claim 2, characterized in that: A second card block (8) is fixedly installed on one side of the second brick (102), and a second card slot (9) is opened on the other side of the second brick (102). Adjacent second bricks (102) are engaged by the second card block (8) and the second card slot (9). Positioning holes are opened at the top and bottom of the second brick (102). A first card post (7) is inserted into a group of second bricks (102) located at the bottom. A second card post (10) is inserted into the positioning hole at the top of the second brick (102). The upper and lower groups of second bricks (102) are connected by the second card post (10).

4. The intermediate frequency furnace lining structure according to claim 3, characterized in that: A locking block three (11) is fixedly installed on one side of the brick three (103), and a locking groove three (12) is opened on the other side of the brick three (103). Adjacent brick three (103) are engaged by the locking block three (11) and the locking groove three (12). A slot is opened at the bottom of the brick three (103), and a locking post two (10) is inserted into the slot and the positioning port of the upper brick two (102).

5. The intermediate frequency furnace lining structure according to claim 4, characterized in that: The brick four (201) is fixedly installed on the inner wall of the brick three (103) of the refractory brick furnace lining (1) below. A card block four (14) is fixedly installed on one side of the brick four (201), and a card slot four (15) is opened on the other side of the brick four (201). Adjacent brick four (201) are engaged by the card block four (14) and the card slot four (15). A positioning groove is opened on the top of the brick four (201), and a card post three (13) is inserted in the positioning groove.

6. The intermediate frequency furnace lining structure according to claim 5, characterized in that: One side of the brick five (202) is fixedly installed with a card block five (17), and the other side of the brick five (202) is provided with a card slot five (18). Adjacent brick five (202) are engaged by the card block five (17) and the card slot five (18). The top and bottom of the brick five (202) are provided with positioning cavities. The card post three (13) is inserted into a group of brick five (202) located at the bottom. The positioning cavity at the top of the brick five (202) is provided with a card post four (16). The upper and lower groups of brick five (202) are connected by the card post four (16).

7. The intermediate frequency furnace lining structure according to claim 6, characterized in that: The brick six (203) is fixedly installed on the inner wall of the brick one (101) of the upper refractory brick furnace lining (1). A locking block six (20) is fixedly installed on one side of the brick six (203), and a locking groove six (19) is opened on the other side of the brick six (203). Adjacent bricks six (203) are engaged by the locking block six (20) and the locking groove six (19). A column groove is opened at the bottom of the brick six (203). A locking column four (16) is inserted into the column groove and the positioning cavity of the upper brick five (202). A guide slope (4) is provided on both brick four (201) and brick six (203).

8. The intermediate frequency furnace lining structure according to claim 7, characterized in that: The reinforcing structure (3) includes a ring bar (301), a first reinforcing bar (302) and a second reinforcing bar (303). The ring bar (301) is fixedly installed at the bottom of the first reinforcing bar (302), and the second reinforcing bar (303) is fixedly installed at the top of the first reinforcing bar (302). A square groove is opened at the top of the third brick (103) of the lower refractory brick lining (1), and a square opening is opened at the bottom of the first brick (101) of the upper refractory brick lining (1). The ring bar (301) is inserted into the square groove, and the second reinforcing bar (303) is inserted into the square opening.

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