Automatic sand filling device for telescopic electric furnace

Abstract

The utility model relates to a telescopic electric furnace automatic sand filling device, and belongs to the technical field of electric furnaces. Comprising a stock bin and an electric furnace, and further comprises a telescopic device and a sand adding device, and the sand adding device is arranged between the stock bin and the electric furnace, connected with the telescopic device and movably arranged in the direction away from or close to the electric furnace under driving of the telescopic device; the sand adding device is provided with a hopper and a sand outlet, and when the hopper is far away from the electric furnace along with the telescopic device and located below the stock bin, the stock bin adds sand into the hopper. When the sand outlet approaches the electric furnace along with the telescopic device and is located above the steel outlet of the electric furnace, the sand adding device fills the steel outlet of the electric furnace with sand through the sand outlet. Compared with an existing fixed type automatic sand filling device, in the sand filling process of the device, the stock bin is far away from the electric furnace, the telescopic device and the sand adding device are transiently located above the tapping hole only when the tapping hole is filled with sand, the influence of high-temperature baking on the sand filling device body is reduced to the maximum degree, and the risk of equipment damage is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric furnaces and relates to a telescopic electric furnace automatic sand filling device. Background Art

[0002] In the process of electric furnace steelmaking, when one furnace of steel is tapped, the tapping port needs to be blocked before the next furnace of molten steel can be smelted. The existing process operation is that the operator fills the tapping port with drainage sand. During the sand filling process, the high-temperature flue gas and dust in the furnace body of the electric furnace overflow, which affects the safety and health of the operator. Therefore, it is urgent to provide an electric furnace automatic sand filling device to realize automatic sand filling operation to reduce the above-mentioned impact.

[0003] However, the automatic sand filling device of the electric furnace in the prior art is usually fixed. Regardless of whether the sand filling device is working or not, the sand filling device is always above the steel outlet, the temperature is high, and the equipment is baked at high temperature for a long time, which has the disadvantage that the equipment is easily damaged. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a telescopic electric furnace automatic sand filling device, so that the equipment can avoid the high temperature area above the steel outlet, thereby protecting the equipment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic electric furnace automatic sand filling device, comprising a silo and an electric furnace, and also comprising a telescopic device and a sand adding device, wherein the sand adding device is arranged between the silo and the electric furnace, the sand adding device is connected to the telescopic device, and is movably arranged in a direction away from or close to the electric furnace under the drive of the telescopic device; the sand adding device is provided with a hopper and a sand outlet, when the hopper moves away from the electric furnace with the telescopic device and is located below the silo, the silo adds sand to the hopper; when the sand outlet moves close to the electric furnace with the telescopic device and is located above the steel outlet of the electric furnace, the sand adding device fills the steel outlet of the electric furnace with sand through the sand outlet.

[0006] Optionally, the telescopic device includes a shell and a telescopic rod arranged in the shell, one end of the telescopic rod is connected to the sand adding device, guide rails are provided on both sides of the telescopic rod, and rollers matching the guide rails are provided in the shell. The guide rails drive the telescopic rod to move along the rollers, thereby driving the sand adding device to move.

[0007] Optionally, the outer shell is provided with a sprocket bearing seat, the telescopic rod is provided with a chain connecting seat, and the telescopic device is connected to a driving mechanism via the sprocket bearing seat and the chain connecting seat; the driving mechanism is driven by a motor, a driving wheel is installed at the output end of the motor, a driven wheel is installed at the sprocket bearing seat, a chain is installed on the driving wheel and the driven wheel, and the chain is connected to the chain connecting seat. When the motor is started, the driving wheel drives the chain to rotate, and the chain drives the telescopic rod to move, thereby driving the sand adding device to move.

[0008] Optionally, the roller is a concave roller and the guide rail is a convex guide rail.

[0009] Optionally, the sand adding device is a screw feeder.

[0010] Optionally, the silo is a weighable silo.

[0011] Optionally, the bottom of the silo is sequentially connected and communicated with a discharger and a discharge pipe.

[0012] Optionally, the discharger is a star discharger, a screw feeder, a rotary feeder, an electric gate valve or a pneumatic gate valve.

[0013] Optionally, the sand outlet of the sand adding device is provided with an eccentric material guide pipe, and the eccentric material guide pipe rotates around the center line of the sand outlet to adjust the sand outlet position.

[0014] Optionally, a camera is provided at the sand outlet of the sand adding device.

[0015] The beneficial effects of the utility model are:

[0016] 1. Compared with the existing fixed automatic sand filling device, in the utility model, a telescopic device connected to the sand adding device is provided, and the sand adding device is driven by the telescopic device. When the hopper moves away from the electric furnace along with the telescopic device and is located below the silo, the silo adds sand to the hopper; when the sand outlet of the sand adding device moves close to the electric furnace along with the telescopic device and is located above the steel outlet of the electric furnace, the sand adding device fills the steel outlet with sand; in this process, the silo is always away from the electric furnace, and the telescopic device and the sand adding device are only briefly located above the steel outlet when filling the steel outlet with sand, thereby minimizing the influence of high-temperature baking on the device body and reducing the risk of equipment damage.

[0017] 2. The main structure of the device of the utility model is far away from the electric furnace, the operating environment is safe, maintenance is convenient, the sand adding work is simple and fast, and it has a visual function, which can realize quantitative automatic feeding and sand adding. It is superior to manual sand filling and existing automatic sand filling devices in terms of safety and function.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0020] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the middle AA section;

[0022] Figure 3 for Figure 1 Schematic diagram of the middle BB section;

[0023] Figure 4 for Figure 1 Schematic diagram of the CC section;

[0024] Figure 5 for Figure 2 A partial enlarged schematic diagram of M in the middle;

[0025] Figure 6 It is a schematic diagram of the stretching out sand filling operation of the utility model.

[0026] Figure markings: 1- silo, 101- bag breaker, 102- support, 2- weighing sensor, 3- steel structure platform, 4- discharger, 5- discharge pipe, 6- telescopic device, 601- roller, 602- housing, 603- telescopic rod, 604- guide rail, 605- sprocket bearing seat, 606- chain connecting seat, 7- driving mechanism, 701- chain, 702- driven wheel, 703- driving wheel, 704- motor, 8- sand adding device, 801- hopper, 802- sand outlet, 9- camera, 10- eccentric material guide pipe, 11- electric furnace. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] See also Figure 1 to Figure 6 , is a telescopic electric furnace automatic sand filling device, such as Figure 1 As shown, it includes a silo 1 and an electric furnace 11. The silo 1 is arranged on a charging platform away from the electric furnace 11, so that the silo 1 and the electric furnace 11 are staggered. It also includes a telescopic device 6 and a sand adding device 8. The sand adding device 8 is arranged between the silo 1 and the electric furnace 11. The sand adding device 8 is connected to the telescopic device 6 and is movably arranged in a direction away from or close to the electric furnace 11 under the drive of the telescopic device 6; the sand adding device 8 is provided with a hopper 801 and a sand outlet 802. When the hopper 801 of the sand adding device 8 moves away from the electric furnace 11 with the telescopic device 6 and is located below the silo 1, at this time, the discharge port of the silo 1 is aligned with the hopper 801 of the sand adding device 8, and the silo 1 adds sand to the hopper 801; when the sand adding device 8 moves close to the electric furnace 11 with the telescopic device 6 and is located above the electric furnace 11, at this time, the sand outlet 802 is aligned with the steel outlet of the electric furnace 11, and the sand adding device 8 fills the steel outlet of the electric furnace 11 with sand through the sand outlet 802. The silo 1 is a weighable silo. In this embodiment, a weighing sensor 2 is provided between the support 102 of the silo 1 and the feeding platform to monitor the weight change of the material in the silo 1 .

[0031] The silo 1 is also provided with a bag breaker 101, and the bottom discharge port of the silo 1 is connected in sequence by threads and is connected to the discharger 4 and the discharge pipe 5; the discharger 4 is driven by electricity or gas, and can be a star-shaped discharger, a screw feeder, a rotary feeder, an electric gate valve or a pneumatic gate valve and other common dischargers. In this embodiment, an electric gate valve is used for unloading, and the unloading response is timely. When the hopper 801 of the sand adding device 8 moves away from the electric furnace 11 with the telescopic device 6 and is located below the silo 1, at this time, the discharge port of the silo 1 is aligned with the hopper 801 of the sand adding device 8, the electric gate valve is opened, and the silo 1 adds sand to the hopper 801 through the discharge pipe 5. After the sand adding is completed, the electric gate valve is closed.

[0032] like Figure 2As shown, in this embodiment, the telescopic device 6 includes a shell 602, a roller 601, a guide rail 604 and a telescopic rod 603. The shell 602 of the telescopic device 6 is fixed on another platform below the feeding platform, the roller 601 is threadedly connected to the shell 602, the guide rail 604 is threadedly connected to the telescopic rod 603, and one end of the telescopic rod 603 is threadedly connected to the sand adding device 8; in this embodiment, the roller 601 and the guide rail 604 are symmetrically arranged on both sides of the telescopic rod 603, and the two upper and lower adjacent rollers 601 clamp the guide rail 604 respectively. When the guide rail 604 moves, the roller 601 rotates accordingly, and the telescopic rod 603 also moves with the guide rail 604, thereby driving the sand adding device 8 to move.

[0033] like Figure 3 , Figure 4 As shown, the housing 602 is also correspondingly installed with a sprocket bearing seat 605, the telescopic rod 603 is threadedly connected with a chain connecting seat 606, and the telescopic device 6 is connected to a driving mechanism 7 through the sprocket bearing seat 605 and the chain connecting seat 606; the driving mechanism 7 includes a chain 701, a driving wheel 703, a driven wheel 702 and a motor 704, the driving mechanism 7 is driven by the motor 704, the chain connecting seat 606 is fixedly connected to the chain 701, the driving wheel 703 and the driven wheel 702 are both sprockets, which are used to drive the chain 701 to rotate, the driving wheel 703 is installed on the output shaft of the motor 704, and the driven wheel 702 is installed on the sprocket bearing seat 605, so that the telescopic device 6 can drive the telescopic rod 603 to move through the motor 704, thereby driving the sand adding device 8 to move to get close to or away from the electric furnace 11. The driving mechanism 7 adopts a sprocket chain transmission, which has high reliability.

[0034] like Figure 5 As shown, the roller 601 is a concave roller 601, and the guide rail 604 is a convex guide rail 604 matched with the concave roller 601, and the concave edge size of the roller 601 is slightly larger than the convex edge size of the guide rail 604. The concave roller 601 plays a side limiting and guiding role in the movement of the guide rail 604, thereby ensuring the smooth movement of the telescopic rod 603 connected to the guide rail 604.

[0035] In this embodiment, the sand adding device 8 uses a screw feeder, and the capacity of the hopper 801 of the screw feeder should not be less than the amount of sand filled at one time to ensure the sand adding efficiency; the sand outlet 802 at the lower side of the screw feeder is threadedly connected with an eccentric guide pipe 10, which is bolted so that the eccentric guide pipe 10 can rotate around the center line of the sand outlet 802, thereby adjusting the sand outlet position through the eccentric guide pipe 10, so that the sand outlet 802 of the screw feeder can be aligned with the electric furnace. 11; a camera 9 is also threadedly connected to one side of the sand outlet 802 on the lower side of the spiral feeder. The camera 9 is used to observe the alignment of the sand outlet 802 and the sand filling of the steel outlet. The camera 9 needs to be additionally cooled with water and has an air blowing effect to ensure that the camera 9 can dissipate heat in time, while reducing the interference of smoke and dust from the furnace body of the electric furnace 11 with the imaging quality of the camera 9. The camera 9 and the water cooling and air blowing devices are all prior arts, and their specific structure and operating principle will not be repeated here.

[0036] Specific implementation method:

[0037] The operator adds materials to the silo 1 on the feeding platform and puts the sandbags into the silo 1. The bag breaker 101 in the silo 1 can directly pierce the sandbags to reduce manual operation. After the silo 1 is filled, the weighing sensor 2 records the weight of the silo 1 and the sand. Figure 1 As shown, at this time, the screw feeder retracts with the telescopic device 6, the screw feeder is away from the electric furnace 11, and the discharge pipe 5 is aligned with the hopper 801 of the screw feeder. When the discharger 4 is opened, the sand passes through the discharger 4 and the discharge pipe 5 and enters the hopper 801 of the screw feeder for storage. The weighing sensor 2 displays the weight change value, which is the weight of the sand in the hopper 801 of the screw feeder. When the weight of the sand in the hopper 801 reaches the weight of one sand addition, the discharger 4 is closed. At this time, the hopper 801 stores the amount of sand required for one sand addition.

[0038] When the electric furnace 11 is finished with steel and needs to add sand, Figure 6 As shown, the motor 704 of the driving mechanism 7 is started, the sprocket chain transmission is running, the chain 701 drives the telescopic rod 603 and the screw feeder to extend, close to the electric furnace 11, to the top of the steel outlet of the electric furnace 11 and stop, at this time, the screw feeder is started, and the sand material falls from the sand outlet 802 through the eccentric guide pipe 10 into the steel outlet of the electric furnace 11 for filling. In this process, the camera 9 installed at the sand outlet 802 can observe the state and filling situation of the steel outlet, which is convenient for the operator to judge whether sand can be added, whether the steel outlet is filled, etc. If the steel outlet is not on the route of the spiral feeder, the eccentric guide pipe 10 can be rotated to adjust the position of the sand outlet to achieve the alignment of the sand outlet 802 and the steel outlet. After completing a sand filling, the motor 704 is started again, and the screw feeder is retracted to the bottom of the weighable silo 1 to prepare for the sand filling work of the next furnace.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A telescopic electric furnace automatic sand filling device, comprising a silo (1) and an electric furnace (11), characterized in that: The invention also comprises a telescopic device (6) and a sand adding device (8), wherein the sand adding device (8) is arranged between the silo (1) and the electric furnace (11), the sand adding device (8) is connected to the telescopic device (6), and is arranged to move in a direction away from or close to the electric furnace (11) under the drive of the telescopic device (6); the sand adding device (8) is provided with a hopper (801) and a sand outlet (802); when the hopper (801) moves away from the electric furnace (11) along with the telescopic device (6) and is located below the silo (1), the silo (1) adds sand to the hopper (801); when the sand outlet (802) moves close to the electric furnace (11) along with the telescopic device (6) and is located above the steel outlet of the electric furnace (11), the sand adding device (8) fills the steel outlet of the electric furnace (11) with sand through the sand outlet (802).

2. The telescopic electric furnace automatic sand filling device according to claim 1 is characterized in that: The telescopic device (6) comprises a housing (602) and a telescopic rod (603) arranged in the housing (602); one end of the telescopic rod (603) is connected to the sand adding device (8); guide rails (604) are arranged on both sides of the telescopic rod (603); rollers (601) matched with the guide rails (604) are arranged in the housing (602); the guide rails (604) drive the telescopic rod (603) to move along the rollers (601), thereby driving the sand adding device (8) to move.

3. The telescopic electric furnace automatic sand filling device according to claim 2 is characterized in that: The housing (602) is provided with a sprocket bearing seat (605), the telescopic rod (603) is provided with a chain connecting seat (606), and the telescopic device (6) is connected to a driving mechanism (7) via the sprocket bearing seat (605) and the chain connecting seat (606); the driving mechanism (7) is driven by a motor (704), a driving wheel (703) is installed at the output end of the motor (704), a driven wheel (702) is installed on the sprocket bearing seat (605), a chain (701) is installed on the driving wheel (703) and the driven wheel (702), and the chain (701) is connected to the chain connecting seat (606); when the motor (704) is started, the driving wheel (703) drives the chain (701) to rotate, and the chain (701) drives the telescopic rod (603) to move, thereby driving the sand adding device (8) to move.

4. The telescopic electric furnace automatic sand filling device according to any one of claims 2 or 3, characterized in that: The roller (601) is a concave roller, and the guide rail (604) is a convex guide rail.

5. The telescopic electric furnace automatic sand filling device according to claim 1, characterized in that: The sand adding device (8) is a screw feeder.

6. The telescopic electric furnace automatic sand filling device according to claim 1, characterized in that: The silo (1) is a weighable silo.

7. The telescopic electric furnace automatic sand filling device according to claim 1, characterized in that: The bottom of the silo (1) is sequentially connected and communicated with a discharger (4) and a discharge pipe (5).

8. The telescopic electric furnace automatic sand filling device according to claim 7, characterized in that: The discharger (4) is a star-shaped discharger, a screw feeder, a rotary feeder, an electric gate valve or a pneumatic gate valve.

9. The telescopic electric furnace automatic sand filling device according to claim 1, characterized in that: The sand outlet (802) of the sand adding device (8) is provided with an eccentric material guide pipe (10), and the eccentric material guide pipe (10) rotates around the center line of the sand outlet (802) to adjust the sand outlet position.

10. The telescopic electric furnace automatic sand filling device according to claim 1, characterized in that: A camera (9) is provided at the sand outlet (802) of the sand adding device (8).

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