S-shaped double control slag hole of continuous casting slab slag adding machine

Abstract

The utility model discloses a kind of S-shaped double-control slag tapping hole of continuous casting slab slag adding machine, it is related to continuous casting equipment technical field. Including bunker, bunker bottom is equipped with connecting pipe, connecting pipe bottom is equipped with discharge pipe transversely, discharge pipe output end is equipped with slag tapping hopper below, the bottom of slag tapping hopper is equipped with slag tapping hole, the upper portion of slag tapping hopper is inserted and is equipped with rotating rod, rotating rod both ends are rotatably set on base;Base top is equipped with reciprocating drive component, including motor, disc, connecting rod, rack and pinion, motor drives disc rotation, rotating motion is converted into the reciprocating motion of rack by connecting rod, rack and pinion engage to drive slag tapping hopper swing;Discharge pipe input end is equipped with combined drive component, including pushing block, push rod and connecting rod, pushing function is realized by connecting rod and rack linkage.This utility model realizes S-shaped swing slagging and intermittent pushing double function by single motor, protect slag distribution uniform, simple structure, control accurate, strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting equipment technology, and in particular to the S-type double-controlled slag discharge hole of a continuous casting slab slag adding machine. Background Technology

[0002] Continuous casting is a key process in modern steel production. During continuous casting, the addition of protective slag plays a crucial role in the quality of the cast billet. The protective slag covers the surface of the molten steel in the crystallizer and has multiple functions, including preventing oxidation, absorbing inclusions, improving heat transfer, and lubricating the billet shell. The uniform distribution of the protective slag directly affects the surface and internal quality of the cast billet; therefore, the performance of the slag-adding equipment is of great significance to continuous casting production.

[0003] Existing continuous casting slag feeders mainly employ fixed slag outlets or simple oscillating mechanisms. Fixed slag outlets are simple in structure, but the protective slag can only fall at a fixed point, easily causing localized accumulation and uneven slag layer thickness, thus affecting the protective effect. While traditional oscillating slag feeders can achieve slag spreading over a certain range, their oscillation trajectory is singular, typically a simple reciprocating linear motion, making it difficult to achieve the ideal S-shaped slag spreading trajectory. Furthermore, existing slag feeders often use independent pushing mechanisms for material feeding control, requiring additional power sources and control systems. This not only increases the complexity and cost of the equipment but also leads to problems such as poor motion coordination and maintenance difficulties.

[0004] In summary, existing continuous casting slag addition technologies suffer from drawbacks such as uneven distribution of protective slag, a single slag-spreading trajectory, complex structure, and low control precision. These problems are particularly pronounced in high-speed continuous casting and wide slab continuous casting, severely impacting the stability of slab quality. Therefore, there is an urgent need to develop a new type of slag addition device that can achieve uniform S-shaped slag spreading, has a simple structure, and offers precise control, to meet the high-quality and high-efficiency requirements of modern continuous casting production. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an S-type dual-control slag discharge hole for a continuous casting slab slag feeding machine.

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

[0007] The S-type dual-control slag discharge port of the continuous casting slab slag feeder includes a hopper, a connecting pipe at the bottom of the hopper, a discharge pipe at the bottom of the connecting pipe, a slag discharge funnel below the output end of the discharge pipe, a slag discharge hole at the bottom of the slag discharge funnel, a rotating rod inserted at the top of the slag discharge funnel, and the same base rotatably fitted at both ends of the rotating rod. A reciprocating drive assembly for driving the slag discharge funnel to swing is provided at the top of the base, and a combined drive assembly for outputting raw materials from the hopper is provided at the input end of the discharge pipe.

[0008] The above technical solution achieves an organic combination of S-shaped slag spreading and material pushing control by setting a reciprocating drive component to drive the slag discharge funnel to swing, and a combined drive component to control the material feeding, ensuring that the protective slag is evenly distributed on the surface of the billet.

[0009] Preferably, the reciprocating drive assembly includes a motor located on the top of the base, a disk coaxially mounted on the motor output shaft, a connecting rod hinged to the side wall of the disk away from the center, a rack hinged to the tail end of the connecting rod, a gear meshing at the bottom of the rack, and the gear sleeved on the outer circumference of the rotating rod.

[0010] The above technical solution utilizes a transmission chain consisting of a motor, a disc, a connecting rod, a rack, and a gear to efficiently convert rotary motion into oscillating motion, thereby achieving a smooth S-shaped oscillation of the slag discharge hopper and improving the accuracy of the slag spreading trajectory.

[0011] Preferably, the combined drive assembly includes a pusher block that is slidably inserted into the input end of the discharge pipe, and the end of the pusher block is provided with a push rod, which is connected to the rack sidewall by the same connecting rod.

[0012] The above technical solution achieves a clever design that uses a single power source to drive dual functions by synchronously transmitting the rack motion to the pusher block via a connecting rod, simplifying the equipment structure and improving the coordination of movements.

[0013] Furthermore, a speed-regulating power supply is provided at one end of the top of the base, and the speed-regulating power supply is electrically connected to the motor.

[0014] Through the above technical solutions, the stepless adjustment of slag feeding speed and oscillation frequency is achieved by setting up a speed-regulating power supply, which can be flexibly adjusted according to different continuous casting process parameters, thereby improving the adaptability of the equipment.

[0015] Furthermore, the speed control power supply is a 24V speed control power supply.

[0016] The above technical solution, using a 24V low-voltage speed-regulating power supply, improves operational safety while ensuring control accuracy, reduces energy consumption, and meets the requirements for safe production.

[0017] Preferably, the rack sliding sleeve is provided with a sliding sleeve, which is fixed to the top of the base.

[0018] Through the above technical solutions, the sliding sleeve provides stable guiding support for the rack, reduces motion wobble, reduces abnormal wear between the rack and gear, and extends the service life of the transmission system.

[0019] Preferably, the upper part of the silo is also provided with an upper discharge pipe, and the output end of the upper discharge pipe is provided with multiple fixed slag discharge holes, which are located above the slag discharge funnel.

[0020] The above technical solutions, by adding an upper discharge pipe and a fixed slag discharge hole to form a dual-path slag feeding system, can perform fixed-point supplementary slag feeding on the basis of S-shaped swing slag feeding, thus improving the flexibility and controllability of the slag feeding method.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. The reciprocating drive component realizes the S-shaped swing motion of the slag discharge funnel, so that the protective slag is evenly spread on the surface of the billet in an S-shaped trajectory. This effectively avoids the local accumulation problem caused by traditional fixed or simple swing slag feeders, ensures that the thickness of the protective slag layer in the crystallizer is consistent, and significantly improves the surface quality of the billet.

[0023] 2. Adopting an innovative linkage mechanism design, this device, driven by a single motor, simultaneously achieves two functions: the S-shaped oscillation of the slag discharge hopper and the reciprocating pushing of the material pusher block. Compared to traditional slag feeders that require multiple power sources, this device has a more compact and simpler structure, reducing equipment complexity and manufacturing costs while improving system reliability.

[0024] 3. The motor speed is infinitely adjustable via a speed-regulating power supply, allowing precise control of the slag feeding frequency and material pushing speed to adapt to the continuous casting process requirements of different casting speeds and steel grades. The dual-path slag discharge system, with the main path employing an S-shaped oscillating slag discharge and the auxiliary path using fixed slag discharge holes, can be flexibly switched or combined according to actual production needs, greatly expanding the equipment's applicability.

[0025] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the S-type dual-control slag discharge hole of the continuous casting slab slag adding machine proposed in this utility model;

[0027] Figure 2 This is a side view of the S-type double-controlled slag discharge hole of the continuous casting slab slag adding machine proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the reciprocating drive assembly of the S-type dual-control slag discharge hole of the continuous casting slab slag feeder proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the combined drive assembly structure of the S-type dual-control slag discharge hole of the continuous casting slab slag feeding machine proposed in this utility model.

[0030] In the diagram: 1. Hopper; 2. Connecting pipe; 3. Discharge pipe; 4. Push block; 5. Push rod; 6. Connecting rod; 7. Rack; 8. Sliding sleeve; 9. Connecting rod; 10. Disc; 11. Motor; 12. Base; 13. Slag discharge funnel; 14. Slag discharge hole; 15. Rotating rod; 16. Gear; 17. Speed ​​regulating power supply; 18. Upper discharge pipe; 19. Fixed slag discharge hole. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1-4 As shown, this utility model provides an S-type dual-control slag discharge hole for a continuous casting slab slag feeder, including a hopper 1 for storing protective slag raw materials. A connecting pipe 2 is provided at the bottom of the hopper 1, and a discharge pipe 3 is provided horizontally at the bottom of the connecting pipe 2. A slag discharge funnel 13 is provided below the output end of the discharge pipe 3, and a slag discharge hole 14 is provided at the bottom of the slag discharge funnel 13.

[0033] A rotating rod 15 is inserted into the upper part of the slag discharge hopper 13. Both ends of the rotating rod 15 are rotatably sleeved on the same base 12, allowing the slag discharge hopper 13 to swing around the rotating rod 15 as an axis. A reciprocating drive assembly is provided on the top of the base 12 to drive the slag discharge hopper 13 to perform an S-shaped swing motion. A combined drive assembly is provided at the input end of the discharge pipe 3 to control the output of raw materials in the silo 1.

[0034] Specifically, the reciprocating drive assembly includes a motor 11 mounted on top of the base 12, with the output shaft of the motor 11 coaxially fixedly connected to a disk 10. A connecting rod 9 is hinged to the side wall of the disk 10 away from its center via a pin, forming a crank-connecting rod mechanism. A rack 7 is hinged to the tail end of the connecting rod 9 via a pin. When the motor 11 drives the disk 10 to rotate, the circular motion is converted into linear reciprocating motion of the rack 7 via the connecting rod 9.

[0035] The bottom of rack 7 meshes with gear 16, which is sleeved and fixed on the outer circumference of rotating rod 15. The reciprocating linear motion of rack 7 is converted into the reciprocating rotation of gear 16 through the meshing of the rack and pinion, which in turn drives rotating rod 15 and slag discharge funnel 13 to swing left and right, forming an S-shaped slag discharge trajectory.

[0036] The combined drive assembly includes a pusher block 4 slidably inserted into the input end of the discharge pipe 3, which can reciprocate within the discharge pipe 3. A push rod 5 is fixedly connected to the end of the pusher block 4, and the push rod 5 is connected to the side wall of the rack 7 via the same connecting rod 6. When the rack 7 reciprocates, the connecting rod 6 drives the push rod 5 and the pusher block 4 to reciprocate synchronously, realizing the intermittent pushing function.

[0037] To ensure the stability of the rack 7's movement, the rack 7 is slidably sleeved inside the sliding sleeve 8, which is fixed to the top of the base 12 to provide guiding support for the rack 7.

[0038] A speed-regulating power supply 17 is provided at one end of the top of the base 12, preferably a 24V speed-regulating power supply. The speed-regulating power supply 17 is electrically connected to the motor 11, and the movement frequency and speed of the entire system are controlled by adjusting the speed of the motor 11.

[0039] In addition, the upper part of the silo 1 is also equipped with an upper discharge pipe 18, and the output end of the upper discharge pipe 18 is provided with multiple fixed slag discharge holes 19, which are located above the slag discharge funnel 13. This design provides an auxiliary slag addition channel, which can be used to add slag when needed.

[0040] Working principle

[0041] In use, the protective slag material is added to the silo 1. The speed-regulating power supply 17 is turned on, and the motor 11 starts running, driving the disc 10 to rotate. The disc 10 drives the rack 7 to perform reciprocating linear motion through the connecting rod 9.

[0042] The movement of rack 7 produces two synchronized actions:

[0043] On the one hand, the rack 7 drives the rotating rod 15 and the slag funnel 13 to reciprocate by meshing with the gear 16, so that the protective slag flowing out of the slag hole 14 is evenly distributed on the surface of the billet in an S-shaped trajectory.

[0044] On the other hand, the rack 7 drives the push rod 5 and the push block 4 to reciprocate through the connecting rod 6, periodically pushing the raw materials in the hopper 1 into the slag discharge funnel 13.

[0045] By adjusting the speed control power supply 17, the rotational speed of the motor 11 can be changed, thereby adjusting the oscillation frequency of the slag discharge funnel 13 and the pushing frequency of the pusher block 4, achieving precise control over the amount and speed of slag addition.

[0046] When it is necessary to increase the amount of slag added or to add slag at a fixed point, the upper discharge pipe 18 and the fixed slag discharge hole 19 can be used for auxiliary slag addition to achieve more flexible slag addition control.

[0047] This invention achieves the dual functions of S-shaped slag spreading and intermittent material pushing through a single power source via ingenious mechanical linkage design. It has a simple structure, reliable operation, and can effectively improve the uniformity of protective slag distribution during continuous casting.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. S-shaped double-control slag outlet hole of continuous casting slab slag adding machine, comprising a stock bin (1), characterized in that, The bottom of the silo (1) is provided with a connecting pipe (2), the bottom of the connecting pipe (2) is provided with a discharge pipe (3) in the horizontal direction, the output end of the discharge pipe (3) is provided with a slag funnel (13), the bottom of the slag funnel (13) is provided with a slag outlet (14), the upper part of the slag funnel (13) is provided with a rotating rod (15), the two ends of the rotating rod (15) are rotatably sleeved with the same base (12), the top of the base (12) is provided with a reciprocating drive assembly for driving the slag funnel (13) to swing, and the input end of the discharge pipe (3) is provided with a combined drive assembly for outputting raw materials from the silo (1).

2. The S-type double controlled taphole of the continuous casting slab slag feeder according to claim 1, characterized in that, The reciprocating drive assembly includes a motor (11) located on the top of the base (12). The output shaft of the motor (11) is coaxially provided with a disk (10). A connecting rod (9) is hinged to the side wall of the disk (10) away from the center. A rack (7) is hinged to the tail end of the connecting rod (9). A gear (16) meshes with the bottom of the rack (7). The gear (16) is sleeved on the outer circumference of the rotating rod (15).

3. The S-type double controlled taphole of the continuous casting slab slagging machine according to claim 2, characterized in that, The combined drive assembly includes a pusher block (4) that is slidably inserted into the input end of the discharge pipe (3). The end of the pusher block (4) is provided with a push rod (5). The push rod (5) is connected to the side wall of the rack (7) by the same connecting rod (6).

4. The S-type double controlled taphole of the continuous casting slab slagging machine according to claim 3, characterized in that, The base (12) has a speed-regulating power supply (17) at one end of its top, and the speed-regulating power supply (17) is electrically connected to the motor (11).

5. The S-type double controlled taphole of the continuous casting slab slagging machine according to claim 4, characterized in that, The speed-regulating power supply (17) is a 24V speed-regulating power supply.

6. The S-type double controlled taphole of the continuous casting slab slagging machine according to claim 5, characterized in that, The rack (7) is fitted with a sliding sleeve (8), which is fixed to the top of the base (12).

7. The S-type double controlled taphole of the continuous casting slab slagging machine according to claim 6, characterized in that, The upper part of the silo (1) is also provided with an upper discharge pipe (18), and the output end of the upper discharge pipe (18) is provided with multiple fixed slag discharge holes (19), which are located above the slag discharge funnel (13).

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