Improved submerged arc furnace protection screen

Abstract

The utility model discloses an improved submerged arc furnace protection screen, which belongs to the technical field of submerged arc furnace equipment, and comprises a protection screen body, a sealing mechanism, a mounting mechanism and a cooling water pipe, the mounting mechanism is fixedly connected to the outer surface of the protection screen body, the sealing mechanism is fixedly connected to the outer surface of the mounting mechanism, and the cooling water pipe is fixedly connected to the sealing mechanism. A limiting frame is inserted into the outer surface of a fixing protrusion, so that the limiting frame and a sealing plate can wrap the outer surface of a positioning block, then the inner side face of the positioning frame is slidably connected to the outer surface of the limiting frame, meanwhile, a through hole in the outer surface of the limiting frame is slidably connected with the outer surface of the fixing protrusion, and then a bolt is rotated; and the protection screen bodies are prevented from being separated from one another, so that the sealing plates, the positioning frames and the limiting frames can seal the connecting positions of the two adjacent protection screen bodies, and the situation that heat is diffused from the connecting positions of the protection screen bodies is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc furnace equipment, and particularly relates to an improved protection screen for a submerged arc furnace. Background Art

[0002] A submerged arc furnace, also known as an electric arc furnace or a resistance furnace, is mainly used for reducing and smelting ores, carbonaceous reducing agents, solvents and other raw materials, and mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicomanganese alloy, etc., which are important industrial raw materials in the metallurgical industry and chemical raw materials such as calcium carbide.

[0003] The Chinese utility model with the publication number CN214009981U discloses a large sleeve protection screen that is easy to install, including a protection screen spliced by a plurality of A screens and a plurality of B screens. A pair of first connection devices with the same structure are installed on the outer wall of the A screen, and a pair of second connection devices with the same structure are installed on the outer wall of the B screen. The first connection device includes an A chute, the A chute is fixedly connected to the outer wall surface of the A screen, an A plug pin is movably connected in the A chute, an A handle is fixedly connected to the outer side wall of the A plug pin, and an A slot is fixedly connected to the outer wall surface of the A screen and below the A chute. In this device, the A plug pin is inserted into the B slot, and the B plug pin is inserted into the A slot to connect the adjacent B screen and A screen. By analogy, the protection screen spliced by the utility model has a simple installation method and reduces the labor intensity of workers.

[0004] Since the A screen and the B screen are spliced through a connection device, there are inevitably small gaps and areas with poor contact at the splicing part, and high-temperature heat may diffuse through these weak links. Therefore, there is a problem of heat diffusion at the connection between the screens. Content of the Utility Model

[0005] The main purpose of the utility model is to provide an improved protection screen for a submerged arc furnace, which can effectively solve the problems put forward in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] An improved protection screen for a submerged arc furnace includes a protection screen body, a sealing mechanism, a mounting mechanism and a cooling water pipe. The mounting mechanism is fixedly connected to the outer surface of the protection screen body, the sealing mechanism is fixedly connected to the outer surface of the mounting mechanism, the cooling water pipe is installed on the inner wall of the protection screen body, the sealing mechanism includes a fixed protrusion fixedly connected to the outer surface of the mounting mechanism, and a positioning frame and a limiting frame are slidably connected to the outer surface of the fixed protrusion;

[0008] A sealing plate is fixedly connected to the outer surface of the limiting frame, and the sealing plate is slidably connected to the outer surface of the mounting mechanism;

[0009] The installation mechanism includes a positioning block fixedly connected to the outer surface of the protection screen body, and the fixing protrusion is fixedly connected to the outer surface of the positioning block;

[0010] Furthermore, through holes for cooperating with the fixing protrusion are provided on the outer surfaces of both the positioning frame and the limiting frame;

[0011] Furthermore, the inner side surface of the positioning frame slides on the outer surface of the limiting frame, and the outer surface of the positioning frame fits with the outer surface of the positioning block;

[0012] Furthermore, a bolt is threadedly connected to the outer surface of the positioning frame, and the other end of the bolt is threadedly connected to the outer surface of the limiting frame;

[0013] Furthermore, a protective cover is fixedly connected to the upper surface of the protection screen body, and a connecting water pipe is fixedly connected to the inner wall of the protective cover;

[0014] Furthermore, an installation plane is provided on the outer surface of the protection screen body, and the outer surface of the positioning block is arranged on the outer surface of the installation plane;

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] 1. By inserting the limiting frame onto the outer surface of the fixing protrusion, the limiting frame and the sealing plate can wrap the outer surface of the positioning block. Then, the inner side surface of the positioning frame is slidably connected to the outer surface of the limiting frame. At the same time, the through hole on the outer surface of the limiting frame is slidably connected to the outer surface of the fixing protrusion. Then, by rotating the bolt, the separation between the protection screen bodies is prevented, and the sealing plate, the positioning frame, and the limiting frame can seal the connection between two adjacent protection screen bodies, thereby reducing the diffusion of heat from the connection of the protection screen bodies.

[0017] 2. By bringing the protection screen bodies closer to each other and making the outer surfaces of two adjacent positioning blocks fit, the outer surfaces of two adjacent protection screen bodies are made to fit, facilitating the assembly of the protection screen bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a front view structure diagram of the positioning frame and the limiting frame in the present utility model;

[0020] Figure 3 is a front view sectional structure diagram of the overall structure of the present utility model;

[0021] Figure 4Schematic diagram of another side structure of the overall structure of the present utility model;

[0022] Figure 5 Schematic top cross-sectional structure diagram of the overall structure of the present utility model.

[0023] In the figure: 1. Protection screen body; 2. Sealing mechanism; 201. Bolt; 202. Positioning frame; 203. Through hole; 204. Fixed protrusion; 205. Protective cover; 206. Limiting frame; 207. Sealing plate; 3. Mounting mechanism; 301. Mounting plane; 302. Positioning block; 4. Cooling water pipe; 5. Connecting water pipe. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] As Figure 1 - Figure 5 shown, an improved protection screen for a submerged arc furnace includes a protection screen body 1, a sealing mechanism 2, a mounting mechanism 3 and a cooling water pipe 4. The mounting mechanism 3 is fixedly connected to the outer surface of the protection screen body 1, the sealing mechanism 2 is fixedly connected to the outer surface of the mounting mechanism 3, the cooling water pipe 4 is installed on the inner wall of the protection screen body 1. The sealing mechanism 2 includes a fixed protrusion 204 fixedly connected to the outer surface of the mounting mechanism 3. The outer surface of the fixed protrusion 204 is slidably connected with a positioning frame 202 and a limiting frame 206. The outer surface of the limiting frame 206 is fixedly connected with a sealing plate 207. The sealing plate 207 is slidably connected to the outer surface of the mounting mechanism 3.

[0026] In order to reduce the diffusion of heat from the connection part of the protection screen body 1, through holes 203 for cooperating with the fixing protrusions 204 are provided on the outer surfaces of the positioning frame 202 and the limiting frame 206. By sliding the fixing protrusions 204 into the through holes 203, it is convenient to splice and limit every two adjacent protection screen bodies 1. Moreover, the inner side surface of the positioning frame 202 slides on the outer surface of the limiting frame 206, and the outer surface of the positioning frame 202 fits with the outer surface of the positioning block 302. Through the positioning frame 202 and the limiting frame 206, it is convenient to limit the outer surfaces of two adjacent protection screen bodies 1. A bolt 201 is threadedly connected to the outer surface of the positioning frame 202, and the other end of the bolt 201 is threadedly connected to the outer surface of the limiting frame 206. By rotating the bolt 201, the other end of the bolt 201 slides into the threaded hole provided on the outer surface of the limiting frame 206, thereby facilitating the limitation of the positioning frame 202 and the limiting frame 206 and preventing the protection screen bodies 1 from separating from each other. A protective cover 205 is fixedly connected to the upper surface of the protection screen body 1, and a connecting water pipe 5 is fixedly connected to the inner wall of the protective cover 205. Through the connecting water pipe 5, it is convenient to connect the cooling water pipes 4 between two adjacent protection screen bodies 1. At the same time, the protective cover 205 facilitates the protection of the connecting water pipe 5.

[0027] It is worth mentioning that the limiting frame 206 is inserted into the outer surface of the fixing protrusion 204, so that the limiting frame 206 and the sealing plate 207 can wrap the outer surface of the positioning block 302. Then, the inner side surface of the positioning frame 202 is slidably connected to the outer surface of the limiting frame 206. At the same time, the through hole 203 on the outer surface of the limiting frame 206 is slidably connected to the outer surface of the fixing protrusion 204. Then, the bolt 201 is rotated to prevent the protection screen bodies 1 from separating from each other, so that the sealing plate 207, the positioning frame 202 and the limiting frame 206 can seal the connection part of two adjacent protection screen bodies 1, thereby reducing the occurrence of heat diffusion from the connection part of the protection screen body 1.

[0028] In order to facilitate the assembly of the protection screen body 1, the installation mechanism 3 includes a positioning block 302 fixedly connected to the outer surface of the protection screen body 1, and the fixing protrusion 204 is fixedly connected to the outer surface of the positioning block 302. An installation plane 301 is provided on the outer surface of the protection screen body 1, and the outer surface of the positioning block 302 is arranged on the outer surface of the installation plane 301. Through the positioning block 302, it is convenient to align two adjacent protection screen bodies 1, thereby facilitating the assembly of the protection screen.

[0029] It is worth mentioning that the protection screen bodies 1 are moved closer to each other, and the outer surfaces of two adjacent positioning blocks 302 are made to fit, so that the outer surfaces of two adjacent protection screen bodies 1 fit, which is convenient for the assembly of the protection screen body 1.

[0030] Working principle: Move the protection screen bodies 1 closer to each other so that the outer surfaces of adjacent two groups of positioning blocks 302 are in contact, and further make the outer surfaces of adjacent two groups of protection screen bodies 1 in contact. Then insert the limit frame 206 onto the outer surface of the fixing protrusion 204 so that the limit frame 206 and the sealing plate 207 can wrap the outer surface of the positioning block 302. Then slidably connect the inner side surface of the positioning frame 202 to the outer surface of the limit frame 206. At the same time, the through hole 203 on the outer surface of the limit frame 206 is slidably connected to the outer surface of the fixing protrusion 204. Then rotate the bolt 201, and the other end of the bolt 201 slides into the threaded hole opened on the outer surface of the limit frame 206, thereby facilitating the limitation of the positioning frame 202 and the limit frame 206, preventing the protection screen bodies 1 from separating from each other, and enabling the sealing plate 207, the positioning frame 202 and the limit frame 206 to seal the connection part between adjacent two groups of protection screen bodies 1, thus reducing the occurrence of heat diffusion from the connection part of the protection screen bodies 1.

[0031] It should be noted that in this text, relational terms such as first and second (No. 1, No. 2) are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved protective screen for an electric arc furnace, comprising a protective screen body (1), a sealing mechanism (2), a mounting mechanism (3) and a cooling water pipe (4), wherein the mounting mechanism (3) is fixedly connected to the outer surface of the protective screen body (1), the sealing mechanism (2) is fixedly connected to the outer surface of the mounting mechanism (3), and the cooling water pipe (4) is mounted on the inner wall of the protective screen body (1), characterized in that: The sealing mechanism (2) comprises a fixing protrusion (204) fixedly connected to the outer surface of the mounting mechanism (3), and the outer surface of the fixing protrusion (204) is slidably connected to a positioning frame (202) and a limiting frame (206); A sealing plate (207) is fixedly connected to the outer surface of the limiting frame (206), and the sealing plate (207) is slidably connected to the outer surface of the mounting mechanism (3); The mounting mechanism (3) comprises a positioning block (302) fixedly connected to the outer surface of the protection screen body (1), and the fixing protrusion (204) is fixedly connected to the outer surface of the positioning block (302).

2. The improved protective screen for an electric arc furnace according to claim 1, characterized in that: The outer surfaces of the positioning frame (202) and the limiting frame (206) are both provided with through holes (203) used in conjunction with the fixing protrusions (204).

3. The improved protective screen for an electric arc furnace according to claim 2, characterized in that: The inner surface of the positioning frame (202) slides on the outer surface of the limiting frame (206), and the outer surface of the positioning frame (202) fits the outer surface of the positioning block (302).

4. The improved protective screen for an electric arc furnace according to claim 2, characterized in that: The outer surface of the positioning frame (202) is threadedly connected with a bolt (201), and the other end of the bolt (201) is threadedly connected to the outer surface of the limiting frame (206).

5. The improved protective screen for an electric arc furnace according to claim 1, characterized in that A protective cover (205) is fixedly connected to the upper surface of the protective screen body (1), and a connecting water pipe (5) is fixedly connected to the inner wall of the protective cover (205).

6. The improved protective screen for an electric arc furnace according to claim 5, characterized in that: The outer surface of the protection screen body (1) is provided with a mounting plane (301), and the outer surface of the positioning block (302) is arranged on the outer surface of the mounting plane (301).

Images