Sectional combined slag stopper for converter

Abstract

The utility model discloses a sectional combined converter slag stopper, relates to the technical field of slag stopper, including the slag stopper, the bottom of slag stopper is connected with the stick body through the connecting head, the connecting head and stick body realize radial locking through the drag hook block and the convex clamping hoop, the both sides of connecting head and stick body outer wall all are provided with two drag hook blocks, the one side of each drag hook block is provided with the convex clamping hoop, the contact position of convex clamping hoop and drag hook block is provided with the clamping groove, the convex clamping hoop can be through rotation and drag hook block and separate. The utility model discloses through sectional structure design, realized the flexible assembly and convenient maintenance of converter slag stopper, and the slag stopper, stick body and guide rod adopt independent modular design, and each part realizes quick dismounting through the structure such as locking sleeve, connecting head, drag hook block and convex clamping hoop, and this design only needs to change the component that appears the problem alone, need not to replace the whole slag stopper, greatly reduced maintenance cost and time.

Description

Technical Field

[0001] This utility model relates to the field of converter slag-blocking rod technology, specifically to a segmented combined converter slag-blocking rod. Background Technology

[0002] Slag-blocking rods are tools used in the converter steelmaking process to prevent highly oxidizing slag from entering the molten steel. In the later stages of converter steelmaking, by inserting slag-blocking rods into the tapping port, slag is prevented from flowing into the ladle, thereby improving the quality of molten steel, reducing the consumption of deoxidizers and alloys, reducing the risk of phosphorus and sulfur reversion, and mitigating refractory corrosion, thus creating favorable conditions for secondary refining of molten steel.

[0003] Existing slag baffles mostly adopt an integral design, with the components being either non-disassembled or extremely difficult to disassemble.

[0004] For example, the converter slag stopper disclosed in CN217438236U has an inverted frustum structure welded from steel plates. The upper end face of the frustum is connected to one end of the clamping rod, and the lower end face of the frustum is connected to one end of the support rod. The steel plates of the frustum are also connected by welding. This integral welding design makes the components tightly fixed and non-removable. When a component of the slag stopper is damaged, the entire slag stopper must be replaced because the integral welding structure is non-removable. Replacing the entire slag stopper would result in a waste of resources.

[0005] Therefore, it is necessary to invent a segmented combination converter slag baffle to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a segmented combination converter slag baffle rod, which solves the problem that the components are not detachable or extremely difficult to detach when using an integral design.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a segmented converter slag-blocking rod, including a slag-blocking plug, the bottom of which is connected to a rod body via a connector, a guide rod connected to the top of the rod body passing through the center of the slag-blocking plug and extending to its top, the top surface of the connector being fixedly installed on the bottom surface of the slag-blocking plug, the connector and the rod body being radially locked by hook blocks and protruding clamps, two hook blocks being provided on both sides of the outer wall of the connector and the rod body, each hook block having a protruding clamp on one side, a groove being provided at the contact position between the protruding clamp and the hook block, the protruding clamp being able to engage or disengage with the hook block by rotation.

[0008] Preferably, the slag-blocking plug has an inverted conical structure design, and the outer surface of the slag-blocking plug is provided with four longitudinally recessed steel water troughs, which are arranged sequentially along the circumference of the slag-blocking plug with the center of the slag-blocking plug.

[0009] Preferably, the guide rod and the rod body are integrally formed, and the length of the threaded end of the guide rod extending beyond the top of the slag-blocking plug is not less than the height of the locking sleeve.

[0010] Preferably, a locking sleeve is provided on the outside of the threaded end of the guide rod, and the inner wall of the locking sleeve is provided with a trapezoidal thread that matches the thread of the guide rod.

[0011] Preferably, a sealing ring is embedded at the contact point between the bottom surface of the connector and the top surface of the rod. The inner diameter of the sealing ring is clearance-fitted with the outer diameter of the guide rod, and the outer diameter is interference-fitted with the inner diameter of the connector.

[0012] Preferably, the front and rear ends of the outer wall of the connector are welded with connectors, and a reinforcing plate is hinged to the connector. The reinforcing plate can rotate around the hinge axis to fit against the outer wall of the rod.

[0013] Preferably, the reinforcing plate has a threaded fixing bolt that extends to the outer wall of the rod, and a threaded hole that matches the fixing bolt is provided at the contact position between the outer wall of the rod and the fixing bolt.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model achieves flexible assembly and convenient maintenance of converter slag-blocking rod through segmented structural design. The slag-blocking plug, rod body and guide rod adopt independent modular design. Each part can be quickly disassembled and assembled through locking sleeve, connector, hook block and protruding clamp and other structures. This design only requires replacement of the problematic parts, without replacing the entire slag-blocking rod, which greatly reduces maintenance costs and time.

[0016] 2. This utility model ensures a stable connection between the various components of the slag-blocking rod through multiple connection and reinforcement mechanisms. The connector and the rod body are radially locked by the hook block and the protruding clamp. Combined with the integral molding structure of the guide rod and the rod body and the trapezoidal thread of the locking sleeve, the stability of the overall structure is further enhanced. At the same time, the combination design of the reinforcing plate and the fixing bolt provides additional axial fixation for the connector and the rod body, ensuring the reliable operation of the slag-blocking rod under high temperature and high pressure environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded three-dimensional structural diagram of the guide rod and locking sleeve of this utility model;

[0019] Figure 3 This is an exploded three-dimensional structural diagram of the rod body and connector of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the sealing ring of this utility model;

[0021] Figure 5 For the present utility model Figure 1 Enlarged 3D structural diagram at point A.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Slag-blocking plug; 2. Steel filter water tank; 3. Rod body; 4. Guide rod; 5. Locking sleeve; 6. Connector; 7. Hook block; 8. Protruding clamp; 9. Slot; 10. Sealing ring; 11. Connector; 12. Reinforcing plate; 13. Fixing bolt; 14. Screw hole. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1-5 The diagram shows a segmented converter slag-blocking rod, including a slag-blocking plug 1. The bottom of the slag-blocking plug 1 is connected to a rod body 3 via a connector 6. A guide rod 4 is connected to the top of the rod body 3, passing through the center of the slag-blocking plug 1 and extending to its top. The top surface of the connector 6 is fixedly installed on the bottom surface of the slag-blocking plug 1. The connector 6 and the rod body 3 are radially locked by hook blocks 7 and protruding clamps 8. Two hook blocks 7 are provided on both sides of the outer wall of the connector 6 and the rod body 3. A protruding clamp 8 is provided on one side of each hook block 7. A groove 9 is provided at the contact position between the protruding clamp 8 and the hook block 7. The protruding clamp 8 can be engaged or disengaged from the hook block 7 by rotation.

[0026] In this embodiment, the radial locking structure ensures that the connector 6 and the rod 3 maintain a stable connection under harsh conditions such as high temperature, high pressure and molten steel impact, preventing relative displacement or loosening of the two in the radial direction, thereby ensuring the reliability of the overall structure of the slag-blocking rod and the accuracy of the slag-blocking operation.

[0027] The slag-blocking plug 1 has an inverted conical structure design. The outer surface of the slag-blocking plug 1 is provided with four longitudinally recessed steel water troughs 2. The four steel water troughs 2 are arranged in sequence along the circumference of the slag-blocking plug 1 with the center of the slag-blocking plug 1.

[0028] In this embodiment, the inverted cone design helps the slag-blocking plug 1 to quickly and accurately reach the steel outlet and achieve a seal, reducing splashing and leakage of molten steel during the tapping process. The molten steel filter tank 2 can effectively intercept slag inclusions in the molten steel while ensuring smooth flow of molten steel, thereby improving the quality of steel and reducing the scrap rate.

[0029] The guide rod 4 and the rod body 3 are integrally formed. The length of the threaded end of the guide rod 4 extending out of the top of the slag plug 1 is not less than the height of the locking sleeve 5. The locking sleeve 5 is provided on the outside of the threaded end of the guide rod 4, and the inner wall of the locking sleeve 5 is provided with a trapezoidal thread that matches the thread of the guide rod 4.

[0030] In this embodiment, the rod body 3 is made of high-alumina refractory material. The one-piece molding structure improves the overall strength of the guide rod 4 and the rod body 3, reduces weak points in the connection. The guide rod 4 extends out of the top of the slag-blocking plug 1 and cooperates with the locking sleeve 5. On the one hand, after the slag-blocking plug 1 is filled with molten steel, it can be connected to external equipment such as a hoisting device through the locking sleeve 5, which facilitates the control of the position and operation of the slag-blocking rod. On the other hand, the trapezoidal thread has good self-locking performance, which can ensure that the locking sleeve 5 and the guide rod 4 are firmly connected and prevent loosening during operation.

[0031] Sealing rings 10 are embedded at the contact points between the bottom surface of the connector 6 and the top surface of the rod 3. The inner diameter of the sealing ring 10 is clearance-fitted with the outer diameter of the guide rod 4, and the outer diameter is interference-fitted with the inner diameter of the connector 6. Connecting parts 11 are welded to the front and rear ends of the outer wall of the connector 6. A reinforcing plate 12 is hinged on the connecting part 11. The reinforcing plate 12 can rotate around the hinge axis to fit against the outer wall of the rod 3. A fixing bolt 13 is threaded through the reinforcing plate 12 and extends to the outer wall of the rod 3. A screw hole 14 is provided at the contact position between the outer wall of the rod 3 and the fixing bolt 13.

[0032] In this embodiment, the sealing ring 10 is a graphite composite refractory sealing ring 10, which can effectively prevent molten steel from leaking from the connection between the connector 6 and the rod 3, ensuring the sealing of the slag-blocking rod. Its inner diameter is clearance-fitted with the guide rod 4, and its outer diameter is interference-fitted with the connector 6, ensuring that the sealing ring 10 can fit tightly in the connection part after installation, achieving a good sealing effect. Moreover, the connector 6 is made of heat-resistant steel casting, which can effectively resist the adverse effects of high temperature environment. The combination design of the reinforcing plate 12 and the fixing bolt 13 provides additional axial fixation for the connection between the connector 6 and the rod 3, further enhancing the stability of the connection between the two. Under harsh environments such as high temperature, high pressure and molten steel impact, it can effectively prevent the connector 6 and the rod 3 from axial displacement or separation, ensuring the overall structural integrity of the slag-blocking rod and the reliability of the slag-blocking operation.

[0033] Working principle of this utility model:

[0034] Refer to the instruction manual appendix Figure 1-5When using this utility model, when installing the slag-blocking plug 1 and the rod body 3, align the rod body 3 with the connector 6, so that the connector 6 corresponds to the hook blocks 7 and the protruding clamps 8 on both sides of the outer wall of the rod body 3. Then, rotate the rod body 3. As the rod body 3 rotates, the protruding clamps 8 will gradually approach the groove 9 on one side of the hook block 7. Continue rotating until the protruding clamps 8 are completely rotated into the groove 9, achieving a tight engagement with the hook blocks 7, thus achieving radial locking between the connector 6 and the rod body 3. Then, rotate the reinforcing plate 12 so that it rotates around the hinge axis until it is in contact with the outer wall of the rod body 3, and then tighten the fixing bolts 13. The thread penetrates the reinforcing plate 12 and extends to the outer wall of the rod body 3, so that it matches the threaded hole 14 opened on the outer wall of the rod body 3, and the fixing bolt 13 is tightened to provide additional axial fixation for the connection between the connector 6 and the rod body 3, further enhancing the stability of the connection between the two. Since the guide rod 4 and the rod body 3 are integrally formed, the guide rod 4 has now penetrated the center of the slag-blocking plug 1 and extended to its top. Finally, the locking sleeve 5 is screwed into the threaded end of the guide rod 4. The trapezoidal thread on the inner wall of the locking sleeve 5 matches the thread of the guide rod 4. The locking sleeve 5 is rotated to make it firmly connected to the guide rod 4.

[0035] When disassembling the slag plug 1 and the rod body 3, loosen the locking sleeve 5 and unscrew it from the threaded end of the guide rod 4. Then, loosen the two fixing bolts 13 in sequence and remove them from the reinforcing plate 12 and the rod body 3. After that, rotate the protruding clamp 8 to separate it from the hook block 7. The protruding clamp 8 on one side of each hook block 7 must be rotated into place to ensure that the radial lock between the connector 6 and the rod body 3 is released and disassembled.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A segmented converter slag-blocking bar, comprising a slag-blocking plug (1), characterized in that: The bottom of the slag-blocking plug (1) is connected to a rod (3) via a connector (6). A guide rod (4) is connected to the top of the rod (3), which passes through the center of the slag-blocking plug (1) and extends to its top. The top surface of the connector (6) is fixedly installed on the bottom surface of the slag-blocking plug (1). The connector (6) and the rod (3) are radially locked by a hook block (7) and a protruding clamp (8). Two hook blocks (7) are provided on both sides of the outer wall of the connector (6) and the rod (3). A protruding clamp (8) is provided on one side of each hook block (7). A groove (9) is provided at the contact position between the protruding clamp (8) and the hook block (7). The protruding clamp (8) can be engaged or disengaged from the hook block (7) by rotation.

2. The segmented combined converter slag baffle as described in claim 1, characterized in that: The slag-blocking plug (1) has an inverted conical structure design. The outer surface of the slag-blocking plug (1) is provided with four longitudinally recessed steel water troughs (2). The four steel water troughs (2) are arranged sequentially along the circumference of the slag-blocking plug (1) with the center of the slag-blocking plug (1).

3. The segmented combined converter slag baffle according to claim 1, characterized in that: The guide rod (4) and the rod body (3) are integrally formed. The length of the threaded end of the guide rod (4) extending out of the top of the slag plug (1) is not less than the height of the locking sleeve (5).

4. A segmented combined converter slag baffle as described in claim 3, characterized in that: A locking sleeve (5) is provided on the outside of the threaded end of the guide rod (4), and the inner wall of the locking sleeve (5) is provided with a trapezoidal thread that matches the thread of the guide rod (4).

5. A segmented combined converter slag baffle as described in claim 1, characterized in that: Sealing rings (10) are embedded at the contact points between the bottom surface of the connector (6) and the top surface of the rod (3). The inner diameter of the sealing ring (10) is clearance-fitted with the outer diameter of the guide rod (4), and the outer diameter is interference-fitted with the inner diameter of the connector (6).

6. A segmented combined converter slag baffle as described in claim 5, characterized in that: The connector (6) has connectors (11) welded to its front and rear ends. A reinforcing plate (12) is hinged to the connector (11). The reinforcing plate (12) can rotate around the hinge axis to fit against the outer wall of the rod (3).

7. A segmented combined converter slag baffle as described in claim 6, characterized in that: The reinforcing plate (12) has a threaded fixing bolt (13) that extends to the outer wall of the rod (3). A screw hole (14) is provided at the contact position between the outer wall of the rod (3) and the fixing bolt (13).

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