CN112429944B

CN112429944B - Tin bath graphite lining

Info

Publication number: CN112429944B
Application number: CN202011426819.6A
Authority: CN
Inventors: 王保平; 侯建伟; 刘文瑞; 吴星达
Original assignee: Bengbu Zhongguangdian Technology Co Ltd
Current assignee: Bengbu Zhongguangdian Technology Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2022-05-24
Anticipated expiration: 2040-12-09
Also published as: CN112429944A

Abstract

The invention provides a tin bath graphite lining, which comprises a tin bath (1) and is characterized in that: the tin bath (1) is provided with a slot (2) along the length direction of the tin bath (1) on the side wall of the tin bath (1), a group of graphite linings (3) are arranged in the slot (2), and two ends of the slot (2) are provided with end plug bricks (4) which are correspondingly matched. The graphite lining has the advantages of simple structure, convenience in use, convenience in replacement of the graphite lining, high utilization rate of the graphite lining and the like.

Description

Tin bath graphite lining

The technical field is as follows:

the invention relates to the field of float glass production, in particular to a tin bath graphite lining.

Background art:

the float process is a method for forming plate glass on the surface of molten metal tin after the molten glass in melting furnace flows into tin bath, the tin bath is key thermal equipment for float glass forming, the tin bath is loaded with tin liquor, the molten glass is floated on the surface of tin liquor, under the control of proper temperature gradient, under the action of edge-drawing machine, the plate glass with required thickness and width can be formed. After the glass plate is shaped, the glass plate is required to be led out to a transition roller at the tail end of a tin bath and is continuously sent to an annealing kiln.

The molten tin bath body is a closed device consisting of refractory materials and steel plates, and because molten glass and the refractory materials belong to inorganic oxide materials, wettability exists between the molten glass and the refractory materials, when the molten glass is in contact with the refractory materials, adhesion can be caused, so that the production process is influenced, the molten glass is prevented from adhering to the wall of the molten tin bath, graphite materials are lined on the inner side of the wall of the molten tin bath generally, graphite is not soaked with the molten tin and the molten glass, and a good isolation effect can be achieved.

Because the tin liquid height can be adjusted because of the technology needs, also can cause the altitude variation because of tin liquid consumes, therefore graphite makes rectangular form usually, and has certain degree of depth below the tin liquid level, because graphite proportion is little than the tin liquid much, therefore the graphite inside lining can receive great buoyancy, generally adopts the steel sheet band screw to fix the graphite strip inboard at the pool wall.

The prior art has the following disadvantages: the graphite strips are well installed in a cold state, and because the expansion coefficients of graphite and screws are greatly different, the expansion coefficient of steel is about 12E-6/k, while the expansion coefficient of graphite is about 220E-6/k, when the temperature is increased to a high temperature, the screws are loosened and are not firmly fixed; when the forming of the lead or the abnormity occurs, the edge seal of the tin bath is usually required to be opened, the glass plate is manually operated by tools such as a hook shovel, the graphite strip can be pressed by the tools such as the hook, and the graphite strip is easy to press and fall off; when the graphite is used at high temperature for a long time, the graphite can be slowly burnt, so that screw holes can be enlarged, and screws can be loosened; when the graphite strips fall off due to some reason and need to be replaced, the steel pressing plate needs to be cut off as the steel pressing plate is welded on the steel structure of the shell of the tank body, and after new graphite strips are replaced, the pressure root welding recovery needs to be reduced in a working state, so that the workload is large, the operation difficulty is high, and the working environment is severe; in addition, the edge seal of the tin bath needs to be opened when the graphite strip is replaced, so that air is easily mixed, and the production process and the product quality are affected. Cold installation, and disposable; once the graphite strips are burnt, the graphite strips cannot be repaired; the cold installation is easy to loosen and fall off after the temperature is raised; after long-time use, the rubber also can loosen and fall off due to burning loss; the replacement difficulty is large, and the replacement can hardly be carried out.

The invention content is as follows:

the invention provides a tin bath graphite lining to overcome the defects in the prior art.

The application provides the following technical scheme:

the utility model provides a molten tin bath graphite inside lining, it is including the molten tin bath, its characterized in that: the side wall of the tin bath is provided with a slot along the length direction of the tin bath, a group of graphite linings are arranged in the slot, and two ends of the slot are provided with corresponding matched end plug bricks.

On the basis of the technical scheme, the following further technical scheme can be provided:

the slot include the cell body that distributes along molten tin bath length direction, still be equipped with the rectangle through-hole that distributes along molten tin bath length direction on the molten tin bath of cell body one side, the bottom surface of rectangle through-hole is less than the tank bottom surface of cell body, and rectangle through-hole upper portion one side and cell body intercommunication.

The graphite lining comprises a first graphite block which is correspondingly matched with the rectangular through hole, and a second graphite block which is correspondingly matched with the groove body is connected to the upper part of one side of the first graphite block.

The height of the first graphite block is smaller than that of the rectangular through hole.

The first graphite block and the second graphite block are of an integrated structure.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an end plug brick according to the present invention;

fig. 3 is a schematic view of the installation of the end plug tile of fig. 2.

The specific implementation mode is as follows:

referring to fig. 1-3, the graphite lining for a tin bath comprises a tin bath 1, and slots 2 penetrating through two ends of the tin bath 1 are arranged on the side wall of the tin bath 1 along the length direction of the tin bath 1. The slot 2 comprises a slot body 2a distributed along the length direction of the tin bath 1. The tin bath 1 on one side of the bath body 2a is also provided with rectangular through holes 2b distributed along the length direction of the tin bath 1, the bottom surfaces of the rectangular through holes 2b are lower than the bottom surface of the bath body 2a, the tops of the rectangular through holes 2b are positioned below the liquid level 1a of tin liquid, and one side of the upper part of each rectangular through hole 2b is communicated with the bath body 2 a.

A group of graphite linings 3 are inserted into the slots 2, the graphite linings 3 comprise first graphite blocks 3a which are correspondingly matched with the rectangular through holes 2b in an inserted mode, the first graphite blocks 3a are cubic, the height of each first graphite block 3a is smaller than that of each rectangular through hole 2b, and the width of each first graphite block 3a is smaller than that of each rectangular through hole 2 b. This allows the first graphite block 3a to have a margin for moving left, right, up and down in the rectangular through-hole 2 b. The upper part of one side of the first graphite block 3a is connected with a second graphite block 3b which is inserted into the groove body 2a and is correspondingly matched with the groove body. The second graphite block 3b is also of a cuboid structure. The first graphite block and the second graphite block are of an integrated structure, and the first graphite block and the second graphite block are the same in width.

And end plug bricks 4 which are correspondingly matched are inserted into the two ends of the slot 2. One end of the end plug brick 4 is positioned outside the tin bath 1.

The use process comprises the following steps:

firstly, during cold installation, an end plug brick 4 is inserted into one end of the slot 2 to plug one end of the slot 2, and then the graphite lining 3 is inserted into the slot 2 one by one from the other end of the slot 2, namely, the first graphite block 3a is positioned at the lower part and correspondingly inserted into the rectangular through hole 2b, and the second graphite block 3b is positioned at the upper part and correspondingly inserted into the groove body 2 a. Finally, another end plug brick 4 is inserted so as to seal the other end of the slot 2. And end plugs 4 at two ends of the slot 2 are sealed by refractory mortar.

The loss of the graphite lining in normal use gradually consumes the tin liquid leaking from the top (i.e. the loss occurs at the second graphite block 3 b). At this moment, refractory mortar outside the end plug bricks 4 at the two ends of the tin bath 1 is firstly removed, then the end plug bricks 4 are pulled out from the slot 2, and then new graphite linings 3 are pushed into the slot 2 one by one from the lower end of the tin bath, so that the lost graphite linings 2 at one end of the graphite slot 2 are ejected out of the slot 2, all the lost graphite linings are ejected out of the slot 2, then the end plug bricks 4 are inserted into the two ends of the slot 2 to be plugged, and then the end plug bricks are sealed by the refractory mortar. The graphite lining that changes down can be preserved, can continue to use after turning round, is about to insert second graphite piece 3b in rectangle through-hole 2b, and then the first graphite piece 3a that does not lose inserts in the cell body 2 a.

Claims

1. The utility model provides a molten tin bath graphite inside lining, it is including molten tin bath (1), its characterized in that: the side wall of the tin bath (1) is provided with a slot (2) along the length direction of the tin bath (1), a group of graphite linings (3) are arranged in the slot (2), and two ends of the slot (2) are provided with end plug bricks (4) which are correspondingly matched; the inserting groove (2) comprises groove bodies (2 a) distributed along the length direction of the tin bath (1), rectangular through holes (2 b) distributed along the length direction of the tin bath (1) are further formed in the tin bath (1) on one side of each groove body (2 a), the bottom surfaces of the rectangular through holes (2 b) are lower than the bottom surface of the groove body (2 a), and one side of the upper portion of each rectangular through hole (2 b) is communicated with the groove body (2 a); the graphite lining (3) comprises a first graphite block (3 a) correspondingly matched with the rectangular through hole (2 b), and the upper part of one side of the first graphite block (3 a) is connected with a second graphite block (3 b) correspondingly matched with the groove body (2 a); the height of the first graphite block (3 a) is smaller than that of the rectangular through hole (2 b); the first graphite block (3 a) and the second graphite block (3 b) are of an integrated structure.