Automatic sand adding device for steel ladle sliding nozzle

Abstract

The utility model provides an automatic sand adding device for a ladle sliding nozzle, which comprises a hopper, a first conveyor, a second conveyor, a rotating mechanism and a feeding chute, a discharge port of the hopper is provided with a first discharge valve, a feed port of the first conveyor corresponds to the discharge port of the hopper, a discharge port of the first conveyor is provided with a second discharge valve, and the feed port of the second conveyor corresponds to the discharge port of the hopper. A feeding port of the second conveyor corresponds to a discharging port of the first conveyor, the feeding elephant trunk is connected to the discharging port of the second conveyor, the second conveyor is installed on the rotating mechanism, the rotating mechanism drives the second conveyor to rotate between a standby position and a working position, and when the second conveyor is in the working position, the feeding elephant trunk is connected to the discharging port of the second conveyor. And the charging articulated chute is positioned above a steel ladle sliding nozzle. According to the utility model, double conveyors are adopted for control, material preparation buffering in advance can be realized, smelting time is shortened, steel ladle temperature drop is reduced, smooth production is ensured, the structure is simple, overhaul and maintenance are convenient, clearance is low, occupied space is small, unmanned automatic operation can be realized, and cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical steelmaking, and in particular relates to an automatic sand adding device for a ladle sliding nozzle. Background Art

[0002] In the converter or electric furnace steelmaking process system, the flow rate of molten steel from the ladle to the tundish is regulated by the sliding nozzle, thereby ensuring continuous casting. Before the ladle receives the molten steel after smelting, the sliding nozzle at the bottom of the ladle must be sanded, that is, filled with high-temperature resistant drainage sand to prevent the high-temperature molten steel from directly contacting the sliding nozzle opening and closing mechanism at the bottom of the ladle. If the sand filling effect of the ladle sliding nozzle is not good, the most direct impact is that the high-temperature molten steel will be bonded to the sliding nozzle opening and closing mechanism at the bottom of the ladle. During casting, the sliding nozzle opening and closing mechanism cannot be opened normally and needs to be processed offline, which directly affects production. At the same time, modern converters adopt a series of top and bottom combined blowing for efficient smelting with short cycles. Some double-link processes such as vanadium semi-steel smelting cycles are less than 18 minutes, that is, each converter needs to smelt about 80 furnaces of molten steel every day. If manual sand addition is used, the labor intensity of workers will inevitably increase.

[0003] At present, the existing steelmaking process technology of ladle sliding nozzle sand adding device basically adopts manual or semi-automatic device, that is, each sand adding needs manual operation by workers on the operating platform; moreover, the sand adding device mostly adopts duct structure, which requires large space and easily affects the operation of peripheral equipment; the on-site environment of the sand adding device is harsh, with high temperature and dust, and the operators are very likely to feel uncomfortable and seriously affect the operation effect; in addition, frequent sand adding will increase the labor intensity of workers and increase the labor cost of the enterprise. Utility Model Content

[0004] The utility model aims to provide an automatic sand adding device for a ladle sliding nozzle, which can at least solve some defects existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic sand-feeding device for a ladle sliding nozzle comprises a hopper, a first conveyor, a second conveyor, a rotating mechanism and a feeding chute, the discharge port of the hopper is provided with a first discharge valve, the feed port of the first conveyor corresponds to the discharge port of the hopper, the discharge port of the first conveyor is provided with a second discharge valve, the feed port of the second conveyor corresponds to the discharge port of the first conveyor, the feeding chute is connected to the discharge port of the second conveyor, the second conveyor is installed on the rotating mechanism, the rotating mechanism drives the second conveyor to rotate between a standby position and a working position, and when the second conveyor is in the working position, the feeding chute is located above the ladle sliding nozzle.

[0007] Furthermore, a weighing sensor is provided on the hopper.

[0008] Furthermore, the first discharge valve is interlocked with the weighing sensor.

[0009] Furthermore, the second discharge valve is interlocked with the first discharge valve.

[0010] Furthermore, a telescopic sleeve is provided at the end of the feeding chute and can be extended into the sliding water outlet of the ladle.

[0011] Furthermore, a camera is provided at the end of the feeding chute.

[0012] Furthermore, the automatic sand adding device for the sliding nozzle of the ladle also includes a first limiter, which is used to limit the second conveyor from rotating toward the sliding nozzle of the ladle when the second conveyor is located in the working position.

[0013] Furthermore, the automatic sand adding device for the sliding nozzle of the ladle also includes a second limiter for limiting the second conveyor from rotating toward the hopper when the second conveyor is located in the standby position.

[0014] Furthermore, the discharge ports of the first conveyor and the second conveyor are both provided with storage chambers.

[0015] Furthermore, the rotation center axis of the rotating mechanism is coaxially arranged with the feed port of the second conveyor.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The automatic sand adding device for the sliding water nozzle of the ladle provided by the utility model adopts double feeder control, which can realize advance material preparation and buffering, speed up the smelting time, reduce the temperature drop of the ladle, and ensure smooth production; and the device has a simple structure, convenient inspection and maintenance, low installation platform requirements, low clearance, and small space occupation, and can realize unmanned automatic operation, save costs, and liberate labor; it can be applied to newly built ladle argon blowing station facilities, and is also applicable to the technical transformation of existing systems.

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the automatic sand adding device for the sliding nozzle of the ladle of the utility model;

[0020] Figure 2 It is a top view of the automatic sand adding device for the sliding nozzle of a ladle according to the utility model.

[0021] Explanation of the accompanying drawings: 1. Hopper; 2. Weighing sensor; 3. First discharge valve; 4. First conveyor; 5. Second discharge valve; 6. Second conveyor; 7. Feeding chute; 8. Camera; 9. Rotating mechanism; 10. Ladle sliding nozzle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0026] like Figure 1 and Figure 2As shown, this embodiment provides an automatic sand adding device for a ladle sliding nozzle, comprising a hopper 1, a first conveyor 4, a second conveyor 6, a rotating mechanism 9 and a feeding chute 7, the discharge port of the hopper 1 is provided with a first unloading valve 3, the feed port of the first conveyor 4 corresponds to the discharge port of the hopper 1, the discharge port of the first conveyor 4 is provided with a second unloading valve 5, the feed port of the second conveyor 6 corresponds to the discharge port of the first conveyor 4, the feeding chute 7 is connected to the discharge port of the second conveyor 6, the second conveyor 6 is installed on the rotating mechanism 9, the rotating mechanism 9 drives the second conveyor 6 to rotate between a standby position and a working position, and when the second conveyor 6 is in the working position, the feeding chute 7 is located above the ladle sliding nozzle 10.

[0027] During operation, drainage sand is stored in the hopper 1. When feeding, the first discharge valve 3 is opened, and the drainage sand enters the first conveyor 4 through the first discharge valve 3. The first conveyor 4 transports the drainage sand to the discharge port end of the first conveyor 4. When the ladle car under the converter runs to the sand adding position of the sliding nozzle, the rotating mechanism 9 drives the second conveyor 6 to rotate from the standby position to the working position. After the stop is accurate, the feeding chute 7 connected to the end of the second conveyor 6 is aligned with the sand adding position of the ladle sliding nozzle 10. At this time, the second discharge valve 5 is opened, and the drainage sand enters the second conveyor 6 from the discharge port of the first conveyor 4 through the second discharge valve 5, and is transported to the end through the second conveyor 6, and then added to the ladle sliding nozzle 10 through the feeding chute 7. The automatic sand adding device for the sliding nozzle of the ladle provided in this embodiment adopts double feeder control, which can realize advance material preparation and buffering, speed up the smelting time, reduce the temperature drop of the ladle, and ensure smooth production.

[0028] In an optimized implementation method, a weighing sensor 2 is provided on the hopper 1, and the weighing sensor 2 is used to detect the discharge weight of the hopper 1 in real time, so that the weight of the drainage sand discharged by the hopper 1 at a time meets the weight requirement of a single ladle, thereby ensuring the accuracy of adding sand to the sliding water inlet of the ladle.

[0029] Furthermore, the first discharge valve 3 is designed to be interlocked with the weighing sensor 2; the second discharge valve 5 is designed to be interlocked with the first discharge valve 3. When the weighing sensor 2 detects that the drainage sand discharged from the hopper 1 meets the weight requirement of a single ladle, the interlocking control controls the first discharge valve 3 to close, and when the second conveyor 6 rotates to the working position, the second discharge valve 5 opens, and only then can the second conveyor 6 work to transport materials. When the drainage sand in the first conveyor 4 is discharged through the second discharge valve 5, the second discharge valve 5 is closed. At this time, the closing interlocking control of the second discharge valve 5 controls the opening of the first discharge valve 3, and the first conveyor 4 starts to work. This repeated cycle can realize remote operation, and then realize intelligent steelmaking.

[0030] Preferably, a storage chamber is designed at the discharge port end of the first conveyor 4 and the second conveyor 6. The first conveyor 4 transports the drainage sand to its storage chamber for temporary storage, so that when the second discharge valve 5 is opened, the drainage sand in the first conveyor 4 can be quickly transported to the second conveyor 6, thereby speeding up the drainage sand transportation efficiency. At the same time, the second conveyor 6 transports the drainage sand to its storage chamber to play a role as a material preparation buffer.

[0031] In an optimized implementation manner, a telescopic sleeve (not shown in the figure) is provided at the end of the feeding chute 7, which can be extended into the sliding water outlet of the ladle; when the second conveyor 6 is in the standby position, the telescopic sleeve at the end of the feeding chute 7 is in a retracted state, reducing the space occupied by the device and reducing the length of the feeding chute 7, which is beneficial to the stability of the feeding chute 7 during the rotation of the second conveyor 6; when the second conveyor 6 rotates to the working position, the telescopic sleeve at the end of the feeding chute 7 extends into the ladle so that the drainage sand can be accurately added to the ladle.

[0032] Preferably, a camera 8 is provided at the end of the feeding chute 7, through which the alignment of the feeding chute 7 and the ladle sliding water nozzle 10 can be monitored, thereby ensuring the stopping accuracy of the automatic sand adding device and facilitating remote control.

[0033] Furthermore, the automatic sand adding device for the ladle sliding nozzle further comprises a first limiter (not shown in the figure), which is used to limit the second conveyor 6 from rotating toward the ladle sliding nozzle 10 when the second conveyor 6 is in the working position, thereby accurately positioning the feeding chute 7 to the upper position of the ladle sliding nozzle 10, further improving the accuracy and convenience of the sand adding operation.

[0034] Optionally, the automatic sand adding device for the ladle sliding nozzle further includes a second limiter (not shown in the figure), which is used to limit the second conveyor 6 from rotating toward the hopper 1 when the second conveyor 6 is located in the standby position.

[0035] In order to ensure that the feed port of the second conveyor 6 can maintain a corresponding relationship with the discharge port of the first conveyor 4 during the rotation of the second conveyor 6 driven by the rotating mechanism 9, it is preferably designed that the rotation center axis of the rotating mechanism 9 is coaxially arranged with the feed port of the second conveyor 6, so that the rotating mechanism 9 drives the second conveyor 6 to always rotate around the axis of the feed port of the second conveyor 6, and the relative positions of the feed port of the second conveyor 6 and the discharge port of the first conveyor 4 remain unchanged, so that there is no need to consider the alignment problem between the feed port of the second conveyor 6 and the discharge port of the first conveyor 4 during the reciprocating rotation of the second conveyor between the standby position and the working position.

[0036] To sum up, the automatic sand adding device for the sliding water nozzle of the ladle provided by the utility model adopts double feeder control, which can realize advance material preparation and buffering, speed up the smelting time, reduce the temperature drop of the ladle, and ensure smooth production. It has a simple structure, convenient inspection and maintenance, low installation platform requirements, low clearance, and small space. It can realize unmanned automatic operation, save costs, and liberate labor. It can be applied to new ladle argon blowing station facilities and also to the technical transformation of existing systems.

[0037] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are identical or similar to the present invention fall within the protection scope of the present invention.

Claims

1. An automatic sand adding device for a ladle sliding nozzle, characterized in that: It includes a hopper, a first conveyor, a second conveyor, a rotating mechanism and a feeding chute, the discharge port of the hopper is provided with a first discharge valve, the feed port of the first conveyor corresponds to the discharge port of the hopper, the discharge port of the first conveyor is provided with a second discharge valve, the feed port of the second conveyor corresponds to the discharge port of the first conveyor, the feeding chute is connected to the discharge port of the second conveyor, the second conveyor is installed on the rotating mechanism, the rotating mechanism drives the second conveyor to rotate between a standby position and a working position, and when the second conveyor is in the working position, the feeding chute is located above the sliding water outlet of the ladle.

2. The automatic sand adding device for ladle sliding nozzle according to claim 1, characterized in that: A weighing sensor is arranged on the hopper.

3. The automatic sand adding device for ladle sliding nozzle according to claim 2, characterized in that: The first discharge valve is interlocked with the weighing sensor.

4. The automatic sand adding device for ladle sliding nozzle according to claim 1, characterized in that: The second discharge valve is interlocked with the first discharge valve.

5. The automatic sand adding device for ladle sliding nozzle according to claim 1, characterized in that: The end of the feeding chute is provided with a telescopic sleeve which can be extended into the sliding water outlet of the ladle.

6. The automatic sand adding device for ladle sliding nozzle according to claim 1, characterized in that: A camera is provided at the end of the feeding chute.

7. The automatic sand adding device for ladle sliding nozzle according to claim 1, characterized in that: It also includes a first limiting member, which is used to limit the second conveyor from rotating toward the sliding water outlet of the ladle when the second conveyor is located in the working position.

8. The automatic sand adding device for ladle sliding nozzle according to claim 7, characterized in that: It also includes a second limiting member, which is used to limit the second conveyor from rotating toward the hopper when the second conveyor is located in the standby position.

9. The automatic sand adding device for ladle sliding nozzle according to claim 1, characterized in that: The discharge ports of the first conveyor and the second conveyor are both provided with storage chambers.

10. The automatic sand adding device for ladle sliding nozzle according to claim 1, characterized in that: The rotation center axis of the rotating mechanism is coaxially arranged with the feed port of the second conveyor.

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