A tool for preventing the jamming of a gasket in a gap of a gas check

Abstract

The utility model discloses a tool of preventing air brick narrow slit joint steel block, it relates to the steel ladle bottom blowing system technical field, including the gas holder, the cavity that has the both ends intercommunication in the gas holder, and the cavity is filled with inert gas, the check valve fixed intercommunication in the gas holder one end, the air brick bottom blowing pipe fixed intercommunication in the gas holder one end away from the air brick bottom blowing pipe, make the gas holder through the air brick bottom blowing pipe and the air brick narrow slit intercommunication. The utility model discloses through filling the inert gas's gas holder and assembling to the air brick below, and utilize the air brick bottom blowing pipe and make the gas holder and the air brick narrow slit intercommunication, then through setting the check valve at the other port position of the gas holder, the one -way orientation of the gas flow direction on this port of the gas holder is carried out, makes the steel ladle bottom blowing system stop bottom blowing gas after closing, owing to the check valve effect, the gas in the gas holder can guarantee that the bottom blowing air brick narrow slit is slightly positive pressure, can avoid the molten steel to permeate to the air brick narrow slit, improves low blowing work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of bottom blowing systems for steel ladles, and in particular to a tool for preventing steel blockage in narrow slits of breathable bricks. Background Technology

[0002] Currently, after the bottom blowing system of the original ladle stops bottom blowing and shuts off the gas, due to the high static pressure of the molten steel, the molten steel will seep into the slits of the permeable bricks. As the molten steel is poured and the ladle temperature drops, the molten steel in the slits of the permeable bricks solidifies and remains in the slits, which can easily cause blockage of the permeable brick slits. This will cause problems such as the permeable bricks not being able to be bottom blown open or the bottom blowing gas being insufficient during the next steel tapping and refining process, which seriously affects the bottom blowing effect.

[0003] To prevent molten steel from seeping into the slits of the permeable bricks and forming cold steel that blocks the slits after bottom blowing stops, thus ensuring the effectiveness of bottom blowing in the ladle, the bottom blowing system of the ladle needs to be modified. To this end, we propose a tool to prevent steel from forming and blocking the slits of the permeable bricks. Utility Model Content

[0004] The purpose of this invention is to provide a tool to prevent steel blockage in the narrow slits of breathable bricks, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tool for preventing steel blockage in narrow slits of breathable bricks, comprising:

[0006] A gas storage bag, wherein the gas storage bag has a cavity connecting its two ends, and the cavity is filled with an inert gas;

[0007] A check valve is fixedly connected to one end of the gas storage tank to prevent airflow from the gas storage tank cavity from being discharged from the check valve.

[0008] A bottom blowing pipe for permeable bricks is fixedly connected to one end of the air storage bag away from the bottom blowing pipe of the permeable bricks, so that the air storage bag is connected to the slit of the permeable bricks through the bottom blowing pipe of the permeable bricks.

[0009] Preferably, the gas storage bag is a cylindrical tube, and the end of the cylindrical tube near the bottom blow pipe of the permeable brick is provided with an inwardly recessed cavity to form a cavity; the end of the cylindrical tube near the check valve is provided with a connecting hole that communicates with the recessed cavity, so that the bottom blow pipe of the permeable brick communicates with the recessed cavity through the connecting hole.

[0010] Preferably, the cross-section of the recessed cavity is frustum-shaped, and the inner diameter of the recessed cavity gradually decreases along the direction of extension of the bottom blowpipe of the permeable brick toward the check valve.

[0011] Preferably, two gripping components are symmetrically arranged on the outer peripheral wall of the gas storage bag, and the gas storage bag is transported and positioned by the gripping components.

[0012] Preferably, the gripping component includes:

[0013] An arc plate is movably embedded in a storage slot on the outer peripheral wall of the gas storage bag, and a rotating shaft is movably inserted between the top of the arc plate and the inner wall of the storage slot, so that the arc plate can rotate around the rotating shaft.

[0014] A gripping groove is provided at the bottom of the arc plate and communicates with the front and rear sides of the arc plate.

[0015] Preferably, a connector is provided between the bottom blowing pipe of the permeable brick and the end face of the air storage bag, so that the bottom blowing pipe of the permeable brick is detachably connected and fixed to the end face of the air storage bag through the connector.

[0016] Preferably, the connector includes:

[0017] An externally threaded pipe head, wherein the externally threaded pipe head is located at the corresponding position of the connecting hole and is fixed to the end face of the cylindrical pipe body;

[0018] An internally threaded sleeve is rotatably fitted onto the outer wall of the bottom blowpipe of the permeable brick, and the inner side of the internally threaded sleeve is threadedly connected to the outer wall of the externally threaded pipe head. The outer wall of the bottom blowpipe of the permeable brick extends to the inner side of the externally threaded pipe head and is fitted with an O-ring.

[0019] Compared with the prior art, the technical effects of this utility model are as follows:

[0020] This invention places a gas storage bag filled with inert gas below the permeable brick, and uses a bottom blowing pipe of the permeable brick to connect the gas storage bag with the slit of the permeable brick. Then, by setting a check valve at the other end of the gas storage bag, the gas flow direction at that end of the gas storage bag is guided in one direction. After the bottom blowing system of the ladle is stopped and the gas is shut off, the gas in the gas storage bag can ensure a slight positive pressure in the slit of the permeable brick due to the action of the check valve. This can prevent molten steel from seeping into the slit of the permeable brick and improve the efficiency of the bottom blowing operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a three-dimensional cross-sectional view of the gas storage tank of this utility model.

[0023] Figure 3 This is a partial cross-sectional view of the end face of the cylindrical tube of this utility model.

[0024] Figure 4 This is a schematic diagram of a partial structural division between the cylindrical tube and the bottom blowpipe of the breathable brick in this utility model.

[0025] In the diagram: 100, gas storage tank; 101, cylindrical tube; 111, storage slot; 112, arc plate; 113, gripping groove; 114, rotating shaft; 102, recessed cavity; 103, connecting hole; 104, external threaded pipe head; 105, internal threaded sleeve cap; 106, O-ring; 200, check valve; 300, bottom blow pipe of permeable brick. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figures 1-4 The tool shown is designed to prevent steel blockage in the narrow slits of breathable bricks.

[0028] Example 1: Includes a gas storage tank 100, a check valve 200, and a bottom-blowing pipe 300 for permeable bricks. The gas storage tank 100 has a cavity connecting its two ends, and the cavity is filled with an inert gas, preferably argon. The check valve 200 is fixedly connected to one end of the gas storage tank 100, preventing airflow from the cavity of the gas storage tank 100 from escaping through the check valve 200. The bottom-blowing pipe 300 is fixedly connected to the end of the gas storage tank 100 away from the bottom-blowing pipe, allowing the gas storage tank 100 to communicate with the slits of the permeable bricks through the bottom-blowing pipe 300. When the original ladle bottom-blowing system stops bottom-blowing and shuts off the gas, due to the high static pressure of the molten steel, the molten steel will permeate into the slits of the permeable bricks. As the ladle temperature decreases, the molten steel in the slits solidifies and remains trapped, causing blockage. This blockage will occur during the next refining process. When bottom blowing fails, it can cause problems such as insufficient bottom blowing or low bottom blowing pressure. To address this, this embodiment places a gas storage tank 100 filled with inert gas flat inside the support under the bottom of the ladle shell. Then, a bottom blowing pipe 300 is connected to the slit of the permeable brick. A check valve 200 is installed at the tail end of the gas storage tank 100 so that air can only enter but not exit. This ensures that after bottom blowing stops, the inert gas in the gas storage tank 100 maintains a slight positive pressure in the slit of the permeable brick, preventing molten steel from seeping into the slit and solidifying, thus avoiding blockage. In specific verification, the bottom blowing rate increased from 97% to 99.5%, and the number of times the ladle needs to be turned over due to bottom blowing failure decreased significantly each month, reducing the cost of turning over and improving economic efficiency.

[0029] In a preferred embodiment, the gas storage tank 100 is a cylindrical tube 101. One end of the cylindrical tube 101 near the bottom blow pipe 300 of the permeable brick has an inwardly recessed cavity 102, forming a cavity. The other end of the cylindrical tube 101 near the check valve 200 has a connecting hole 103 communicating with the recessed cavity 102, allowing the bottom blow pipe 300 of the permeable brick to communicate with the recessed cavity 102 through the connecting hole 103. The recessed cavity 102 has a frustum-shaped cross-section, and its inner diameter extends along the bottom blow pipe 300 of the permeable brick towards the check valve 200. The extension direction gradually narrows. The recessed cavity 102 set inside the cylindrical tube 101 can meet the purpose of storing inert gas inside the gas storage bag 100. Then, the recessed cavity 102 can be connected to the bottom blow pipe 300 of the permeable brick by connecting hole 103. The check valve 200 is installed at the end face of the cylindrical tube 101 near the port of the recessed cavity 102. The check valve 200 restricts the gas in the recessed cavity 102 from flowing out from here, while allowing external gas to enter the recessed cavity 102 through the check valve 200.

[0030] Example 2: Based on Example 1, this example further illustrates that two gripping components are symmetrically arranged on the outer peripheral wall of the gas storage tank 100. These gripping components facilitate the handling and positioning of the gas storage tank 100. By utilizing the gripping components, the user can gain leverage when handling the gas storage tank 100, improving the convenience of handling and positioning during installation. Each gripping component includes an arc plate 112, which is movably embedded in a storage slot 111 on the outer peripheral wall of the gas storage tank 100. A rotating shaft 1 is movably inserted between the top of the arc plate 112 and the inner wall of the storage slot 111. 14. The arc plate 112 can rotate around the pivot 114. The gripping slot 113 is opened at the bottom of the arc plate 112 and connects to the front and rear sides of the arc plate 112. The arc plate 112 is adapted to the shape of the storage slot 111, so it can be stored in the storage slot 111. When in use, the arc plate 112 can be manually rotated around the pivot 114 to unfold from the storage slot 111. In this way, the user can grip the gripping slot 113 on the arc plate 112 for support. This makes it convenient for the user to hold the arc plate 112 at the gripping slot 113 position to move and position the air storage bag 100.

[0031] Example 3: Based on Example 1 or Example 2, a connector is further provided between the bottom blowing pipe 300 of the permeable brick and the end face of the air storage bag 100, so that the bottom blowing pipe 300 of the permeable brick is detachably connected and fixed to the end face of the air storage bag 100 through the connector. The connector enables a detachable connection between the bottom blowing pipe 300 of the permeable brick and the cylindrical tube 101, thereby facilitating the disassembly and replacement of the bottom blowing pipe 300 of the permeable brick at the end face of the cylindrical tube 101. Compared with the prior art in which the bottom blowing pipe 300 of the permeable brick is fixed to the end face of the cylindrical tube 101 by adhesive, this can facilitate the disassembly, maintenance and replacement of the bottom blowing pipe 300 of the permeable brick. The connector includes an externally threaded pipe head 104, which is located at the corresponding position of the connecting hole 103 and fixed to the end face of the cylindrical tube 101. An internally threaded sleeve 105 is rotatably sleeved on the outer wall of the bottom blowing pipe 300 of the permeable brick, and the internal threaded sleeve 105 is rotatably sleeved on the outer wall of the bottom blowing pipe 300 of the permeable brick. The inner side of the threaded sleeve 105 is threadedly connected to the outer wall of the external threaded tube head 104, and the outer wall of the permeable brick bottom blow pipe 300 extends to the inner side of the external threaded tube head 104 and is fitted with an O-ring 106. When the end of the permeable brick bottom blow pipe 300 is inserted into the inner side of the external threaded tube head 104, the O-ring 106 seals the space between the external threaded tube head 104 and the permeable brick bottom blow pipe 300. Then, after the inner threaded sleeve 105 is aligned with the external threaded tube head 104, the inner threaded sleeve 105 is rotated. The inner threaded sleeve 105 rotates and moves on the outer wall of the external threaded tube head 104, causing the permeable brick bottom blow pipe 300 to be continuously inserted into the external threaded tube head 104. This achieves locking and fixing of the position between the permeable brick bottom blow pipe 300 and the end face of the cylindrical tube body 101, while ensuring the airtightness of the connection between the two. This makes it easier to disassemble and replace the permeable brick bottom blow pipe 300 at the end face of the cylindrical tube body 101.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool for preventing steel from clogging narrow gaps in breathable bricks, characterized in that, include: A gas storage bag (100) has a cavity connecting its two ends and is filled with an inert gas. A check valve (200) is fixedly connected to one end of the gas storage tank (100) to prevent the airflow in the cavity of the gas storage tank (100) from being discharged from the check valve (200); The bottom blow pipe (300) of the permeable brick is fixedly connected to one end of the air storage bag (100) away from the bottom blow pipe (300), so that the air storage bag (100) is connected to the slit of the permeable brick through the bottom blow pipe (300).

2. The tool for preventing steel blockage in narrow slits of breathable bricks according to claim 1, characterized in that, The gas storage bag (100) is a cylindrical tube (101). The cylindrical tube (101) has an inwardly recessed cavity (102) at one end near the bottom blow pipe (300) of the permeable brick, forming a cavity. The cylindrical tube (101) has a connecting hole (103) at one end near the check valve (200) that communicates with the recessed cavity (102), so that the bottom blow pipe (300) of the permeable brick communicates with the recessed cavity (102) through the connecting hole (103).

3. The tool for preventing steel blockage in narrow slits of breathable bricks according to claim 2, characterized in that, The cross-section of the recessed cavity (102) is frustum-shaped, and the inner diameter of the recessed cavity (102) gradually decreases along the direction of extension of the bottom blow pipe (300) of the permeable brick towards the check valve (200).

4. The tool for preventing steel blockage in narrow slits of breathable bricks according to claim 2, characterized in that, Two gripping components are symmetrically arranged on the outer peripheral wall of the gas storage bag (100) for transporting and positioning the gas storage bag (100).

5. The tool for preventing steel blockage in narrow slits of breathable bricks according to claim 4, characterized in that, The gripping component includes: An arc plate (112) is movably embedded in a storage slot (111) on the outer peripheral wall of the gas storage bag (100), and a rotating shaft (114) is movably inserted between the top of the arc plate (112) and the inner wall of the storage slot (111), so that the arc plate (112) can rotate around the rotating shaft (114); The gripping through groove (113) is located at the bottom of the arc plate (112) and is connected to the front and rear sides of the arc plate (112).

6. The tool for preventing steel blockage in narrow slits of breathable bricks according to claim 2, characterized in that, A connector is provided between the bottom blowing pipe (300) of the permeable brick and the end face of the air storage bag (100), so that the bottom blowing pipe (300) of the permeable brick is detachably connected and fixed to the end face of the air storage bag (100) through the connector.

7. The tool for preventing steel blockage in narrow slits of breathable bricks according to claim 6, characterized in that, The connector includes: External threaded pipe head (104), the external threaded pipe head (104) is located at the corresponding position of the connecting hole (103) and is fixed to the end face of the cylindrical pipe body (101); An internal threaded sleeve (105) is rotatably fitted onto the outer wall of the bottom blow pipe (300) of the permeable brick, and the inner side of the internal threaded sleeve (105) is threadedly connected to the outer wall of the external threaded pipe head (104), and the outer wall of the bottom blow pipe (300) of the permeable brick extends to the inner side of the external threaded pipe head (104) and is fitted with an O-ring (106).

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