Steel drilling prevention device for width-adjustable crystallizer
By using a bent box structure to spray nitrogen gas onto the crystallizer, the problem of steel drilling caused by molten steel splashing in complex environments is solved, realizing automatic cleaning and sealing protection of the crystallizer, and improving the safety and production efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-03-17
AI Technical Summary
Existing technologies cannot effectively prevent drilling accidents caused by molten steel splashing in complex working environments, especially during the initial casting and width adjustment processes, and cannot provide long-term online protection.
The structure adopts a bent box structure, and nitrogen gas is sprayed out to seal and protect the gaps of the crystallizer. The flowing airflow removes dust and maintains pressure balance on both sides of the crystallizer to prevent molten steel leakage.
It effectively avoids steel drilling accidents in the gaps of the crystallizer, improves the safe operation performance of the equipment, and automatically removes dust and stains from the surface of the crystallizer before casting and width adjustment.
Smart Images
Figure CN223997271U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of metallurgical continuous casting machine accessories, and in particular to an anti-drilling steel device for adjustable width crystallizers. Background Technology
[0002] In modern continuous casting processes, adjustable-mold-width continuous casting machines are widely used. By flexibly adjusting the casting width of the mold according to the actual production plan, production efficiency is significantly improved while meeting diverse product requirements. However, due to the complex working environment of the mold, drastic temperature changes, and molten steel splashing during pouring, molten steel can enter the corner gaps of the mold, causing leakage and resulting in hanging or width-adjustment leakage accidents. To avoid these situations, existing preparation processes often employ methods to improve preparation quality and the precision of copper plate surface machining. However, these methods can only be operated offline and cannot protect the mold from prolonged online production. Therefore, this paper presents an anti-drilling device for adjustable-width molds. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides an anti-drilling device for adjustable-width crystallizers. Nitrogen gas is sprayed out through a bending box, and the flowing airflow seals and protects the gaps in the crystallizer, preventing drilling accidents caused by inconsistent pressure on both sides of the crystallizer. This overcomes the deficiencies of existing technologies.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A drill-proof steel device for an adjustable width crystallizer includes a bending box, the bending box being annular and having an internal cavity, an air outlet at one end of the bending box, an air inlet pipe connected to the side wall of the bending box, the air inlet pipe communicating with the cavity of the bending box, a pneumatic valve connected to one end of the air inlet pipe, and a pressurization assembly connected to one end of the pneumatic valve.
[0006] As a further improvement of this utility model: an L-shaped fixing rod is bolted to one side of the outer wall of the bending box, and two connecting rods are symmetrically slidably inserted into the vertical section of the L-shaped fixing rod, with a connecting seat connected to one end of each connecting rod.
[0007] As a further improvement of this utility model, an electric telescopic rod is installed between the connecting seat and the vertical section of the L-shaped fixing rod.
[0008] As a further improvement of this utility model: a U-shaped seat is fixed on one side of the connecting seat, and flanges are welded to both sides of the U-shaped seat.
[0009] As a further embodiment of this utility model: the booster assembly includes a booster pump fixed on a U-shaped base, a hose connecting the exhaust end of the booster pump to a pneumatic valve, and an air supply pipe connecting the air inlet end of the booster pump.
[0010] As a further improvement of this utility model: the two ends of the bending box that are close to each other are set to be staggered vertically, and the end of the bending box with the air outlet is located outside the other end.
[0011] As a further improvement of this utility model, the two bends on the bending box near the air outlet are both set as arc segments.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. Pre-treatment cleaning: Activating this device can automatically remove dust and stains from the copper plate of the crystallizer in the early stages of casting and width adjustment, which greatly avoids the residue of impurities in the gaps of the crystallizer, causing wear or damage to the plate surface or gaps.
[0014] 2. Process protection: By using airflow sealing, a certain amount of backup pressure is generated at the gaps on both sides of the crystallizer to prevent steel drilling accidents caused by inconsistent pressure on both sides of the crystallizer.
[0015] 3. Stable operation: The use of anti-drilling steel device can reduce the production hazards caused by steel drilling in the crystallizer and improve the overall safe operation performance of the equipment. Attached Figure Description
[0016] Figure 1 This is a first-view perspective three-dimensional structural diagram of an anti-drilling steel device for an adjustable width crystallizer proposed in this utility model.
[0017] Figure 2 This is a second-view three-dimensional structural diagram of an anti-drilling steel device for an adjustable-width crystallizer proposed in this utility model.
[0018] Figure 3 This is a third-view perspective three-dimensional structural diagram of an anti-drilling steel device for an adjustable width crystallizer proposed in this utility model.
[0019] Figure 4 This utility model proposes an anti-drilling steel device for adjustable width crystallizers. Figure 1 Enlarged structural diagram at point A in the middle.
[0020] In the diagram: 1. Bending box; 2. Pneumatic valve; 3. Hose; 4. U-shaped seat; 5. Booster pump; 6. Air supply pipe; 7. Air inlet pipe; 8. L-shaped fixing rod; 9. Bolt; 10. Electric telescopic rod; 11. Connecting rod; 12. Connecting seat; 13. Flange; 14. Arc segment; 15. Air outlet. 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 drill-proof steel device for an adjustable width crystallizer includes a bending box 1, which is annular and has a cavity inside. One end of the bending box 1 is provided with an air outlet 15. An air inlet pipe 7 is connected to the side wall of the bending box 1 and is connected to the cavity of the bending box 1. One end of the air inlet pipe 7 is connected to a pneumatic valve 2 and one end of the pneumatic valve 2 is connected to a pressurization component. The two ends of the bending box 1 that are close to each other are staggered vertically, and the end of the bending box 1 with the air outlet 15 is located outside the other end. The two bends on the bending box 1 near the air outlet 15 are both set as arc segments 14.
[0023] An L-shaped fixing rod 8 is connected to one side of the outer wall of the bending box 1 by bolts 9. Two connecting rods 11 are symmetrically slidably inserted on the vertical section of the L-shaped fixing rod 8. One end of the two connecting rods 11 is connected to a connecting seat 12. An electric telescopic rod 10 is installed between the connecting seat 12 and the vertical section of the L-shaped fixing rod 8. The L-shaped fixing rod 8 and the bending box 1 can be moved by the electric telescopic rod 10, so that the air outlet 15 of the bending box 1 is close to the gap between the crystallizer and the narrow copper plate.
[0024] A U-shaped seat 4 is fixed on one side of the connecting seat 12, and flanges 13 are welded on both sides of the U-shaped seat 4. The flanges 13 can be connected to the continuous casting machine frame using bolts.
[0025] By opening the pneumatic valve 2, nitrogen gas enters the bending box 1. The nitrogen gas flows along the cavity in the bending box 1 and is finally sprayed out from the air outlet 15, shooting towards the gap between the wide and narrow copper plates of the crystallizer. Before the crystallizer is opened for casting and the width is adjusted, the output airflow is used to remove surface dust and stains. During the crystallizer width adjustment process, the flowing airflow seals and protects the gap of the crystallizer, preventing steel drilling accidents caused by inconsistent pressure on both sides of the crystallizer.
[0026] Example 2 is an optimization based on Example 1, specifically:
[0027] The booster assembly includes a booster pump 5 fixed on a U-shaped base 4. A hose 3 is connected between the exhaust end of the booster pump 5 and the pneumatic valve 2, and an air supply pipe 6 is connected to the air inlet end of the booster pump 5.
[0028] The booster pump 5 can increase the flow rate of nitrogen gas, ensuring that the gas is ejected at high speed in the gaps of the crystallizer, thereby effectively ensuring the sealing effect at the gaps of the crystallizer.
[0029] 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 device for preventing the penetration of a steel sheet for a width-adjustable crystallizer, comprising a bending box (1), characterized in that, The bending box (1) is annular and the inside of the bending box (1) is provided as a cavity, one end of the bending box (1) is provided with an air outlet (15), the side wall of the bending box (1) is connected with an air inlet pipe (7), the air inlet pipe (7) is communicated with the cavity of the bending box (1), one end of the air inlet pipe (7) is connected with a pneumatic valve (2), one end of the pneumatic valve (2) is connected with a pressure boosting assembly; The outer wall of the bending box (1) is connected with an L-shaped fixing rod (8) on one side through a bolt (9), two connecting rods (11) are symmetrically and slidingly inserted into the vertical section of the L-shaped fixing rod (8), one end of the two connecting rods (11) is connected with a connecting seat (12).
2. A drill-resistant steel device for an adjustable width crystallizer according to claim 1, characterized in that, An electric telescopic rod (10) is installed between the connecting seat (12) and the vertical section of the L-shaped fixing rod (8).
3. A device for preventing the penetration of a steel sheet in a width-adjustable crystallizer according to claim 1, wherein A U-shaped seat (4) is fixed on one side of the connecting seat (12), flanges (13) are welded on both sides of the U-shaped seat (4).
4. A device for preventing the penetration of a steel sheet in a width-adjustable crystallizer according to claim 1, wherein The pressure boosting assembly comprises a pressure boosting pump (5) fixed on the U-shaped seat (4), a hose (3) is connected between the exhaust end of the pressure boosting pump (5) and the pneumatic valve (2), and a gas conveying pipeline (6) is connected to the air inlet end of the pressure boosting pump (5).
5. A device for preventing the penetration of a steel sheet in a width-adjustable crystallizer according to claim 1, wherein The two ends of the bending box (1) are arranged in an up-down staggered state, and the end of the bending box (1) provided with the air outlet (15) is located outside the other end.
6. A drill-resistant steel device for an adjustable width crystallizer as defined in claim 1, wherein, The two bending parts near the air outlet (15) on the bending box (1) are both provided as circular arc sections (14).