A stopper rod fastening connector

Abstract

The utility model discloses a stopper rod fastening connecting piece relates to continuous casting equipment technical field, including the horizontal arm of stopper rod body and elevating gear, the top end lateral wall of stopper rod body is provided with the insertion slot, the top of gas passage inside stopper rod body is screwed with the threaded connector, the upper end fixed connection of threaded connector has the connecting plate, the lower end outer wall fixed connection of connecting plate has the sleeve pipe, the bottom of sleeve pipe is provided with the water inlet joint, the top of sleeve pipe is provided with the water outlet joint, the upper end middle part of connecting plate is provided with the gas pipe connection structure, and connecting plate is connected with the horizontal arm through the fixed structure, and the water inlet joint and water outlet joint all are connected to cooling water flow line road. In the utility model, the outside cooling water enters the sleeve pipe inside from the water inlet joint of sleeve pipe bottom and discharges from the water outlet joint of sleeve pipe top, thereby taking away the heat of stopper rod body top, effectively reduces the risk that the high temperature causes the baking deformation of the component connected to stopper rod body top, thereby guaranteeing the stability of connection.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting equipment technology, and in particular to a stopper rod fastening connector. Background Technology

[0002] Continuous casting is short for continuous steel casting. In the production of various steel products in steel plants, there are two methods for solidifying molten steel into shape: the traditional ingot casting method and the continuous casting method. Continuous casting technology, which emerged in Europe and America in the 1950s, is an advanced technology that directly pours molten steel into shape. Compared with traditional methods, continuous casting technology has significant advantages such as greatly improving metal yield and billet quality, and saving energy. In the continuous casting process, the tundish stopper rod, as one of the most important control elements, is installed inside the tundish and works in conjunction with the submerged entry nozzle or the top nozzle of the tundish to control the flow rate of molten steel from the tundish to the crystallizer, thereby ensuring the stability of the molten steel level in the crystallizer and the stability of the continuous casting process.

[0003] Due to the demanding thermal shock conditions, integral stoppers must be baked according to a predetermined schedule, including temperature rise profiles and holding temperatures, before use. The baking of the integral stoppers is carried out simultaneously with the tundish baking process, and the stoppers must remain in the open position throughout the entire tundish baking process. The recommended baking temperature range for the stoppers is 950–120°C.

[0004] The prior art can be referenced in Chinese Patent No. CN218425594U, which discloses a device for preventing the deformation of the stopper rod connector in a continuous casting tundish during baking. The device includes a tundish and a water inlet connected to the upper wall of the tundish. A long water inlet is inserted into the water inlet. A guide block is fixed on the lower wall of the tundish, and the guide block corresponds to the long water inlet. A water outlet is connected to the lower wall of the tundish, and a stopper rod inlet is connected to the upper wall of the tundish. However, this device for preventing the deformation of the stopper rod connector during baking only dissipates heat through a heat pipe. The heat dissipation effect is not good in high-temperature environments, and the effect of preventing the connector from being deformed by baking is not good. Therefore, a stopper rod fastening connector is provided now. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a stopper rod fastening connector. External cooling water enters the casing from the inlet connector at the bottom of the casing and exits from the outlet connector at the top of the casing, thereby carrying away the heat from the top of the stopper rod body. This effectively reduces the risk of high temperature causing baking deformation of the components connected to the top of the stopper rod body, thus ensuring the stability of the connection and overcoming the shortcomings of existing technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A stopper rod fastening connector includes a stopper rod body and a cross arm of a lifting device. The top side wall of the stopper rod body is provided with an insertion groove. A threaded connector is screwed to the top of the gas passage inside the stopper rod body. A connecting plate is fixed to the upper end of the threaded connector. A sleeve is fixed to the lower outer wall of the connecting plate. A water inlet connector is provided at the bottom of the sleeve. A water outlet connector is provided at the top of the sleeve. An air pipe connection structure is provided in the middle of the upper end of the connecting plate. The connecting plate and the cross arm are connected by a fixing structure.

[0008] As a further improvement of this utility model, both the inlet and outlet connectors are externally connected to the cooling water flow pipeline.

[0009] As a further embodiment of this utility model: the sleeve is fitted onto the outside of the insertion groove, and a gap is provided between the side wall of the insertion groove and the inner wall of the sleeve.

[0010] As a further embodiment of this utility model: the bottom end of the sleeve is sealed and abuts against the bottom end of the insertion groove, and two locking bolts are symmetrically screwed to the bottom of the sleeve, with one end of each locking bolt located inside the sleeve being screwed to the bottom of the insertion groove.

[0011] As a further embodiment of this utility model: the air pipe connection structure includes an air guide pipe fixed to the upper end of the connecting plate, the upper end of the air guide pipe is provided with a connecting part, and the interior of the air guide pipe is connected to the interior of the threaded pipe.

[0012] As a further embodiment of this utility model: the fixing structure includes two connecting blocks symmetrically fixed to the side wall of the connecting plate, and the end of the cross arm is provided with an insertion hole that forms a plug-in fit with the air guide tube. The two connecting blocks are connected to the cross arm by fixing bolts.

[0013] As a further improvement of this utility model: two positioning pins are symmetrically arranged at the upper end of the connecting plate, and positioning holes that are symmetrically opened on the cross arm to form an insertion fit with the two positioning pins.

[0014] The beneficial effects of this utility model are as follows:

[0015] External cooling water enters the casing from the inlet connector at the bottom of the casing and exits from the outlet connector at the top of the casing, thereby carrying away the heat from the top of the stopper rod body. This effectively reduces the risk of high temperature causing baking deformation of the components connected to the top of the stopper rod body, thus ensuring the stability of the connection. Attached Figure Description

[0016] Figure 1 This is a first-view overall structural schematic diagram of a stopper rod fastening connector proposed in this utility model.

[0017] Figure 2This is a schematic diagram of the overall structure of a stopper rod fastening connector proposed in this utility model from a second perspective.

[0018] Figure 3 This is a partial cross-sectional structural diagram of a stopper rod fastening connector proposed in this utility model.

[0019] Figure 4 This utility model proposes a stopper rod fastening connector. Figure 2 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Stopper rod body; 2. Locking bolt; 3. Sleeve; 4. Connecting plate; 5. Air guide pipe; 6. Positioning pin; 7. Fixing bolt; 8. Cross arm; 9. Water inlet connector; 10. Connecting block; 11. Water outlet connector; 12. Threaded connector; 13. Insertion groove; 14. Connecting part; 15. Positioning hole; 16. Insertion hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1, referring to Figure 1-4 A stopper rod fastening connector includes a stopper rod body 1 and a horizontal arm 8 of a lifting device. The top side wall of the stopper rod body 1 is provided with a insertion groove 13. The top of the gas passage inside the stopper rod body 1 is screwed with a threaded connector 12. The upper end of the threaded connector 12 is fixed with a connecting plate 4. The lower outer wall of the connecting plate 4 is fixed with a sleeve 3. The bottom of the sleeve 3 is provided with a water inlet connector 9. The top of the sleeve 3 is provided with a water outlet connector 11. Both the water inlet connector 9 and the water outlet connector 11 are externally connected to the cooling water flow pipeline. The middle of the upper end of the connecting plate 4 is provided with a gas pipe connection structure. The connecting plate 4 and the horizontal arm 8 are connected by a fixing structure.

[0023] The sleeve 3 is fitted onto the outside of the insertion groove 13, and a gap is provided between the side wall of the insertion groove 13 and the inner wall of the sleeve 3.

[0024] The bottom end of the sleeve 3 is sealed and abuts against the bottom end of the insertion groove 13. Two locking bolts 2 are symmetrically screwed to the bottom of the sleeve 3. One end of each locking bolt 2 inside the sleeve 3 is screwed to the bottom of the insertion groove 13. The screwing of the two locking bolts 2 to the bottom of the sleeve 3 and the insertion groove 13 prevents the sleeve 3 from loosening with the stopper rod body 1.

[0025] The air tube connection structure includes an air guide tube 5 fixed to the upper end of the connecting plate 4. The upper end of the air guide tube 5 is provided with a connecting part 14, and the interior of the air guide tube 5 is connected to the interior of the threaded pipe 12.

[0026] External cooling water enters the casing 3 from the inlet connector 9 at the bottom of the casing 3 and exits from the outlet connector 11 at the top of the casing 3, thereby carrying away the heat from the top of the stopper rod body 1. This effectively reduces the risk of high temperature causing baking deformation of the components connected to the top of the stopper rod body 1, thus ensuring the stability of the connection.

[0027] Example 2 is an optimization based on Example 1, specifically:

[0028] The fixed structure includes two connecting blocks 10 symmetrically fixed to the side wall of the connecting plate 4. The end of the cross arm 8 is provided with an insertion hole 16 that forms a plug-in fit with the air guide tube 5. The two connecting blocks 10 are connected to the cross arm 8 by fixing bolts 7.

[0029] Two positioning pins 6 are symmetrically arranged at the upper end of the connecting plate 4, and positioning holes 15 are symmetrically opened on the cross arm 8 to form a plug-in fit with the two positioning pins 6.

[0030] By turning the connecting block 10, the connecting plate 4 is rotated, so that the threaded pipe 12 is screwed into the top of the gas channel inside the stopper body 1, and the sleeve 3 is fitted onto the outside of the insertion groove 13. At the same time, the bottom end of the sleeve 3 is sealed and abutted against the bottom end of the insertion groove 13. The two locking bolts 2 are screwed into the bottom of the insertion groove 13. The air guide pipe 5 is inserted into the insertion hole 16 of the cross arm 8, and the two positioning pins 6 are inserted into the positioning hole 15. The connecting block 10 is connected to the cross arm 8 using the fixing bolts 7. The connection part 14 of the external air pipe and the air guide pipe 5 is then connected.

[0031] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A stopper rod fastening connector, comprising a stopper rod body (1) and a horizontal arm (8) of a lifting device, characterized in that, The top side wall of the stopper rod body (1) is provided with a plug groove (13). The top of the gas channel inside the stopper rod body (1) is screwed with a threaded connector (12). The upper end of the threaded connector (12) is fixed with a connecting plate (4). The lower outer wall of the connecting plate (4) is fixed with a sleeve (3). The bottom of the sleeve (3) is provided with a water inlet connector (9). The top of the sleeve (3) is provided with a water outlet connector (11). The middle of the upper end of the connecting plate (4) is provided with a gas pipe connection structure. The connecting plate (4) and the cross arm (8) are connected by a fixing structure.

2. A stopper rod fastening connection according to claim 1, characterised in that Both the inlet connector (9) and the outlet connector (11) are connected to the cooling water flow pipeline.

3. A stopper rod fastening connection according to claim 2, characterised in that The sleeve (3) is fitted onto the outside of the insertion groove (13), and a gap is provided between the side wall of the insertion groove (13) and the inner wall of the sleeve (3).

4. A stopper rod fastening connection according to claim 3, characterised in that The bottom end of the sleeve (3) is sealed and abutted against the bottom end of the insertion groove (13). Two locking bolts (2) are symmetrically screwed to the bottom of the sleeve (3). One end of each locking bolt (2) inside the sleeve (3) is screwed to the bottom of the insertion groove (13).

5. A stopper rod fastening connection according to claim 1, wherein The air pipe connection structure includes an air guide pipe (5) fixed on the upper end of the connecting plate (4), and a connecting part (14) is provided at the upper end of the air guide pipe (5). The interior of the air guide pipe (5) is connected to the interior of the threaded pipe (12).

6. A stopper rod fastening connection as claimed in claim 5, characterised in that The fixing structure includes two connecting blocks (10) symmetrically fixed to the side wall of the connecting plate (4). The end of the cross arm (8) is provided with a plug hole (16) that forms a plug-in fit with the air pipe (5). The two connecting blocks (10) are connected to the cross arm (8) by fixing bolts (7).

7. A stopper rod fastening connection as claimed in claim 6, characterised in that Two positioning pins (6) are symmetrically arranged at the upper end of the connecting plate (4), and positioning holes (15) are symmetrically opened on the cross arm (8) to form an insertion fit with the two positioning pins (6).

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