Leak-proof ladle slide plate structure

Abstract

This utility model relates to a leak-proof steel ladle slide plate structure, including a sliding frame that slides horizontally between an inlet and a outlet, and two slide plates that slide vertically within the sliding frame. It also includes a wedge plate fitted between the two slide plates. The thickness of the wedge plate gradually increases along the sliding direction of the sliding frame. The slide plates have slide plate holes, and the wedge plate has wedge plate holes that communicate vertically with the slide plate holes. Screws are fixed to both ends of the wedge plate along the sliding direction of the sliding frame. The screws pass through the sliding frame and are fitted with nuts. When gaps appear between the slide plates and the inlet / outlet due to wear, tightening the nut at the thinner end of the wedge plate drives the wedge plate to move horizontally. Due to the gradual change in wedge plate thickness, its movement presses the two slide plates upwards and downwards, forcing them to fit tightly against the inlet and outlet respectively. This mechanism actively compensates for gaps caused by wear, fundamentally eliminating the risk of leakage and greatly improving the safety and reliability of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of steel ladle technology, specifically to a leak-proof steel ladle sliding plate structure. Background Technology

[0002] A ladle is a crucial piece of equipment used in the steelmaking process for holding and transferring molten steel. It has a spout at its bottom to control the pouring of molten steel. A typical spout control system usually includes a fixed upper and lower spout, and a sliding plate that slides horizontally between them. The sliding plate has through holes; when these holes align with the upper and lower spouts, molten steel flows out; when misaligned, it blocks the flow. For example, patent document CN107175326A discloses a ladle sliding plate structure that employs this basic principle.

[0003] However, in actual continuous production, the slide plate, inlet, and outlet are subjected to the scouring and erosion of high-temperature molten steel over a long period, inevitably resulting in wear. This wear leads to tiny gaps appearing on the mating surfaces between the slide plate and the inlet / outlet. Under the immense static pressure of the molten steel, the high-temperature molten steel can easily leak out through these gaps. Molten steel leakage not only causes production interruptions and product scrap, but also seriously threatens the safety of equipment and personnel, posing a major safety hazard in steel production.

[0004] Currently, to address leakage issues caused by wear, frequent downtime is typically required to replace the entire ladle slide mechanism. This not only increases spare parts costs and maintenance workload but also severely impacts the continuity and efficiency of production operations. Therefore, there is an urgent need in this field for a ladle slide structure capable of online wear compensation and effective prevention of molten steel leakage to improve the reliability and safety of equipment operation. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a leak-proof steel ladle slide structure.

[0006] This utility model is achieved through the following technical solution: a leak-proof ladle slide plate structure is provided, including a sliding frame that slides horizontally between an inlet and a outlet, and two slide plates that slide vertically within the sliding frame. It also includes a wedge plate fitted between the two slide plates. The thickness of the wedge plate gradually increases along the sliding direction of the sliding frame. The slide plates have slide plate holes, and the wedge plate has wedge plate holes that communicate vertically with the slide plate holes. Screws are fixed to both ends of the wedge plate along the sliding direction of the sliding frame, and the screws pass through the sliding frame and are fitted with nuts.

[0007] In this design, after the slide plate, inlet, and outlet of the water inlet experience a certain degree of wear, in order to prevent molten steel leakage from the gaps created by the wear, the nut on the thinner end of the wedge plate is tightened, causing the wedge plate to move horizontally, thereby squeezing the two slide plates and increasing the distance between them, further achieving a tight fit with the inlet and outlet of the water inlet.

[0008] As an optimization, a connecting bracket is fixedly connected to one end of the sliding frame. In this design, the connecting bracket is used to connect the sliding frame to the drive mechanism.

[0009] As an optimization, the thickness of the slide plate gradually decreases along the direction of increasing wedge plate thickness. This makes the slide plate also a wedge-shaped plate, ensuring a horizontal fit between the slide plate and the inlet and outlet gates.

[0010] As an optimization, the wedge plate hole is an elongated hole that extends along the sliding direction of the sliding frame. This ensures that the liquid discharge from the slide plate hole is not affected during wedge plate adjustment.

[0011] As an optimization, a guide pipe is also included, passing through the holes in the two slide plates and fixedly connected to the upper slide plate. The guide pipe in this design allows molten steel to flow out and prevents molten steel from entering between the two slide plates.

[0012] As an optimization, the upper surface of the guide pipe is flush with the upper surface of the slide plate above it. This prevents molten steel from accumulating at the upper end of the guide pipe.

[0013] As an optimization, the slide plate is a polygonal plate, and the sliding frame has polygonal holes that fit the slide plate. This allows the polygonal plate to be guided through the polygonal holes.

[0014] The beneficial effects of this utility model are as follows: This invention innovatively introduces a horizontally movable wedge plate structure to achieve online automatic wear compensation and effectively prevent molten steel leakage. When gaps appear between the sliding plate and the upper and lower inlets due to wear, tightening the nut at the thinner end of the wedge plate drives it to move horizontally. Because of the gradual change in wedge plate thickness, its movement compresses the two sliding plates on both the upper and lower sides, forcing them to fit tightly against the upper and lower inlets respectively. This mechanism actively compensates for gaps caused by wear, fundamentally eliminating the risk of leakage and greatly improving the safety and reliability of the equipment.

[0015] This invention extends the lifespan of the slide plate assembly and reduces maintenance costs and downtime: Traditional slide plates must be replaced entirely once they wear down to a certain extent. However, this invention, through wedge adjustment, can compensate for wear multiple times, allowing the slide plate, inlet, and outlet to fully utilize their lifespan. This significantly reduces the frequency of spare parts replacement and related procurement costs. Simultaneously, by reducing unplanned downtime, it ensures continuous and efficient production, resulting in significant overall economic benefits.

[0016] The ingenious structural design and simple, reliable adjustment: The entire compensation mechanism is compact and cleverly utilizes the wedge principle to convert the horizontal screw tension into a vertical clamping force, resulting in efficient and reliable force transmission. Adjustment only requires operating the outer nut; no parts need to be disassembled, and no special tools are required. Operation is simple and quick, and can be completed rapidly during production breaks, making it ideal for harsh working conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a front view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This utility model has its water inlet closed. Figure 4 Sectional view of plane AA; Figure 6 This utility model has its sprue in the open state. Figure 4 Sectional view of plane AA; As shown in the figure: 1. Sliding frame, 2. Slide plate, 3. Guide pipe, 4. Wedge plate, 5. Slide plate hole, 6. Wedge plate hole, 7. Screw, 8. Nut, 9. Connecting bracket, 10. Water inlet, 11. Water outlet. Detailed Implementation

[0018] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0019] like Figure 1 As shown in the figure, the present invention provides a leak-proof steel ladle sliding plate structure, comprising a sliding frame 1 that slides horizontally between an inlet 10 and a outlet 11, and two sliding plates 2 that slide vertically within the sliding frame 1. Figure 5 , 6 As shown, the upper water inlet 10 and the lower water inlet 11 are arranged vertically with a certain distance between them, and the central hole between them is coaxially set.

[0020] In order to guide the two skateboards 2 up and down within the sliding frame 1, the skateboard 2 is a polygonal board, and the sliding frame 1 is provided with polygonal holes that fit the skateboard 2, thereby restricting the skateboard 2 to slide only up and down.

[0021] A connecting frame 9 is fixedly connected to one end of the sliding frame 1. The connecting frame 9 is a U-shaped plate welded to the end of the sliding frame 1, and several connecting holes are opened on the connecting frame 9 to realize the connection with the drive mechanism. The drive mechanism is generally a hydraulic cylinder.

[0022] The upper end of the upper slide plate 2 is horizontally positioned and fits against the lower end of the inlet 10, while the lower end of the lower slide plate 2 is horizontally positioned and fits against the upper end of the outlet 11.

[0023] It also includes a wedge plate 4 that fits between the two slide plates 2. The length of the wedge plate 4 is less than the length of the slide plate 2, so that it can slide horizontally inside the sliding frame 1. The total thickness of the wedge plate 4 and the two slide plates 2 is greater than the thickness of the sliding frame 1, so that the upper end of the upper slide plate is higher than the upper end of the sliding frame 1, and the lower end of the lower slide plate is lower than the lower end of the sliding frame 1.

[0024] The wedge plate 4 can be adjusted inside the sliding frame along the moving direction of the sliding frame 1, and the thickness of the wedge plate 4 gradually increases along the sliding direction of the sliding frame 1, such as... Figure 5 As shown, Figure 5 The thickness of the left end of the middle wedge plate 4 is less than the thickness of the right end.

[0025] In order to achieve the fit between the wedge plate 4 and the sliding plate, in this embodiment, the thickness of the sliding plate 2 gradually decreases along the direction in which the thickness of the wedge plate 4 increases. That is to say... Figure 5 The thickness of the left end of the skateboard is greater than the thickness of the right end.

[0026] To enable the movement and subsequent fixation of the wedge plate 4, screws 7 are fixedly connected to both ends of the wedge plate 4 along the sliding direction of the sliding frame 1. The screws 7 pass through the sliding frame 11 and are fitted with nuts 8. The nuts 8 are tightened to the outside of the sliding frame 11, and the position of the wedge plate 4 can be adjusted by using the two nuts.

[0027] The slide plate 2 has slide plate holes 5, and the two slide plate holes 5 are coaxially arranged. It also includes a guide tube 3 passing through the two slide plate holes 5, and the guide tube 3 is fixedly connected to the upper slide plate 2. Furthermore, the upper end face of the guide tube 3 is flush with the upper end face of the upper slide plate 2.

[0028] The wedge plate 4 has a wedge plate hole 6 that runs vertically through the slide plate hole 5. The wedge plate hole 6 is an elongated hole that extends along the sliding direction of the sliding frame 1. The width of the wedge plate hole 6 is equal to the diameter of the slide plate hole 5, and the length of the wedge plate hole 6 is greater than the diameter of the slide plate hole 5.

[0029] The method of using this utility model is as follows: When in use, the upper end of the upper slide plate 2 is attached to the lower end of the upper water inlet 10, and the lower end of the small square slide plate 2 is attached to the upper end of the lower water inlet 11. The connecting frame 9 of the sliding frame 1 is connected to the driving mechanism. The driving mechanism drives the sliding frame 1 and the slide plate to slide horizontally together. When the slide plate hole 5 of the slide plate is aligned and connected with the upper water inlet 10 and the lower water inlet 11, the molten steel in the ladle flows downward. When the slide plate hole 5 is misaligned with the upper water inlet 10 and the lower water inlet 11, the water inlet is blocked.

[0030] After long-term operation, the slide plate 2, the inlet 10 and the outlet 11 will experience some wear. In order to prevent molten steel from leaking out of the gaps caused by the wear, the nut at the thinner end of the wedge plate 4 is tightened (the nut at the other end is loosened in advance), which drives the wedge plate 4 to move horizontally, thereby squeezing the two slide plates 2 and increasing the distance between the two slide plates 2, so as to further achieve the fit with the inlet 10 and the outlet 11.

[0031] Of course, the above description is not limited to the examples above. Technical features not described in this utility model can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A leak-proof steel ladle sliding plate structure, characterized in that: The slide includes a sliding frame (1) that slides horizontally between the inlet (10) and the outlet (11) and two sliding plates (2) that slide up and down within the sliding frame (1). It also includes a wedge plate (4) that fits between the two sliding plates (2). The thickness of the wedge plate (4) gradually increases along the sliding direction of the sliding frame (1). The sliding plate (2) has a sliding plate hole (5). The wedge plate (4) has a wedge plate hole (6) that runs vertically through the sliding plate hole (5). The two ends of the wedge plate (4) along the sliding direction of the sliding frame (1) are fixed with screws (7). The screws (7) pass through the sliding frame (1) and are fitted with nuts (8).

2. The leak-proof steel ladle slide plate structure according to claim 1, characterized in that: One end of the sliding frame (1) is fixedly connected to a connecting frame (9).

3. The leak-proof steel ladle slide plate structure according to claim 1, characterized in that: The thickness of the slide plate (2) gradually decreases along the direction in which the thickness of the wedge plate (4) increases.

4. The leak-proof steel ladle slide plate structure according to claim 1, characterized in that: The wedge hole (6) is an elongated hole that extends along the sliding direction of the sliding frame (1).

5. The leak-proof steel ladle slide plate structure according to claim 1, characterized in that: It also includes a guide tube (3) passing through two slide holes (5), the guide tube (3) being fixed to the slide (2) above.

6. The leak-proof steel ladle slide plate structure according to claim 5, characterized in that: The upper surface of the guide tube (3) is flush with the upper surface of the slide plate (2) above.

7. The leak-proof steel ladle slide plate structure according to claim 1, characterized in that: The slide plate (2) is a polygonal plate, and the sliding frame (1) is provided with polygonal holes that are adapted to the slide plate (2).

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