Swing type automatic sand filling device for tapping hole of electric furnace

Abstract

The utility model relates to an automatic sand filling device for a tapping hole of a swing type electric furnace, which belongs to the technical field of electric furnaces and comprises an electric furnace, a stock bin, a middle collecting hopper and a swing articulated chute are sequentially arranged on one side of the electric furnace along the material flowing direction, a hopper is arranged at the top of the middle collecting hopper, and an electric gate valve and a weighing sensor are mounted at the bottom of the middle collecting hopper; the device further comprises a driving oil cylinder, the swing elephant trunk is rotationally installed below the middle collecting hopper and pivots around the connecting position of the swing elephant trunk and the middle collecting hopper, and when the driving oil cylinder stretches out and drives the swing elephant trunk to a working position, the middle collecting hopper fills a tapping hole of the electric furnace with sand through the swing elephant trunk. And the driving oil cylinder retracts, and the swing elephant trunk returns to a standby position. Compared with an existing automatic sand filling device, a main body structure of the automatic sand filling device is far away from the electric furnace, the operation environment is safe, maintenance is convenient, sand adding work is simple and rapid, quantitative automatic feeding and sand adding can be achieved, and the automatic sand filling device is better than manual sand filling and the existing automatic sand filling device in safety and function.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric furnaces and relates to an automatic sand filling device for a swing type electric furnace steel outlet. Background Art

[0002] In the process of electric furnace steelmaking, when one batch of steel is tapped, the tapping port needs to be sealed before the next batch of molten steel can be smelted. Among them, the amount of sand filling is an important process parameter, which needs to be reasonably controlled according to actual conditions and experience. Too much sand filling may increase the resistance of the tapping port and affect the flow of molten steel; while too little sand filling may not provide sufficient protection, resulting in leakage and damage to the tapping port.

[0003] On the one hand, for manual sand filling, the sand filling area is often above the steel outlet of the electric furnace. This area is a high-risk area with high temperature and high dust, poor working conditions, small operating space, inconvenient operation, and difficult to stabilize the sand filling amount. On the other hand, for some existing sand filling devices, due to the lack of quantitative sand filling function, it is also difficult to effectively prevent molten steel from leaking from the steel outlet. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an automatic sand filling device for a swing-type electric furnace tapping port, so as to provide a stable and accurate amount of sand filling, thereby protecting the equipment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic sand filling device for a swinging electric furnace outlet, comprising an electric furnace, on one side of which a silo, an intermediate collecting hopper and a swing chute are sequentially arranged along the material flow direction, a hopper is provided on the top of the intermediate collecting hopper, and an electric gate valve and a weighing sensor are installed at the bottom of the intermediate collecting hopper; it also includes a driving cylinder, and the swing chute is rotatably installed below the intermediate collecting hopper, and the swing chute pivots around the connection between the swing chute and the intermediate collecting hopper, and when the driving cylinder is extended, the swing chute is driven to the working position, and the intermediate collecting hopper fills sand into the outlet of the electric furnace through the swing chute; when the driving cylinder is retracted, the swing chute returns to the standby position.

[0006] Optionally, the connection point is located directly below the middle collecting hopper, specifically a hinge support, and the swing chute is pivoted by the hinge support.

[0007] Optionally, one end of the swing chute away from the connection is bent, and when the swing chute is in the working position, the bent pipe mouth of the swing chute is directly opposite to the steel outlet of the electric furnace.

[0008] Optionally, one end of the swing chute close to the connection is in an inverted cone hopper shape, and when the swing chute is in the working position, the inverted cone hopper-shaped pipe mouth of the swing chute is directly opposite to the discharge port at the bottom of the intermediate collecting hopper.

[0009] Optionally, a bag breaker is provided in the silo.

[0010] Optionally, it also includes a bracket, which is a steel structure bracket with at least two-layer platform structure.

[0011] Optionally, a discharger is provided at the bottom of the silo, and the discharger is electrically connected to an external controller.

[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 electric gate valve is electrically connected to an external controller.

[0014] Optionally, the hopper volume of the intermediate collecting hopper is not less than the amount of sand required for one-time filling at the steel outlet of the electric furnace.

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

[0016] 1. Compared with the existing automatic sand filling device, the utility model realizes automatic quantitative sand filling by arranging a bag breaker, an intermediate collecting hopper with an electric gate valve and a weighing sensor, and a swinging chute driven by a driving cylinder; wherein, the electric gate valve responds quickly, and the weighing sensor is used to ensure the accurate amount of sand filling, and the amount of sand filling can be adjusted according to the size of the steel outlet, which can be suitable for electric furnaces of different models, and the sand is discharged evenly through the swinging chute, and the sand filling effect is good; through accurate and uniform sand filling, the steel outlet can be effectively protected, the leakage of molten steel can be prevented, and the smooth progress of the production process can be ensured.

[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 quantitative automatic feeding and sand adding can be realized. 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 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a partially enlarged schematic diagram of the utility model.

[0022] Figure numerals: 1- silo, 101- bag breaker, 2- bracket, 3- discharger, 4- intermediate collecting hopper, 401- hopper, 402- electric gate valve, 403- weighing sensor, 5- swing chute, 6- hinge support, 7- driving cylinder, 8- cylinder support, 9- electric furnace. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] See also Figure 1-2 , is a swing type electric furnace tapping automatic sand filling device, comprising an electric furnace 9 and a bracket 2 located on one side of the electric furnace 9, the bracket 2 is a steel structure bracket, such as Figure 1As shown, the steel structure support has an upper and lower platform structure. The support 2 is provided with a silo 1, an intermediate collecting hopper 4 and a swing chute 5 from top to bottom. The silo 1 is fixedly installed on the top platform of the steel structure support. A bag breaker 101 is provided in the silo 1. A discharger 3 is provided at the bottom of the silo 1. The discharger 3 is electrically connected to an external controller. The discharger 3 can be a star-shaped discharger, a screw feeder, a rotary feeder, an electric gate valve or a pneumatic gate valve. In this embodiment, the discharger 3 is electrically connected to the external controller to realize remote control of the start and stop of the feeding of the silo 1.

[0027] like Figure 2 As shown, a hopper 401 is provided on the top of the intermediate hopper 4, and the volume of the hopper 401 is not less than the amount of sand required for the tapping port of the electric furnace. The hopper 401 is directly opposite to the outlet of the discharger 3. An electric gate valve 402 and a weighing sensor 403 are installed at the bottom of the intermediate hopper 4. The electric gate valve 402 is electrically connected to an external controller to realize the start and stop of the unloading of the intermediate hopper 4. A cylinder support 8 is fixed on the intermediate platform of the bracket 2, and a driving oil is hingedly installed on the cylinder support 3. Cylinder 7, the other end of the driving cylinder 7 is hinged to one side of the swing chute 5. Since one end of the swing chute 5 is hinged to the bracket 2, specifically, a hinge support 6 is provided just below the intermediate collecting hopper 4, and the swing chute 5 can pivot around the hinge support 6 at the connection between it and the intermediate collecting hopper 4. The driving cylinder 7 drives the other end of the swing chute 5 to swing when extending and retracting. The driving cylinder 7 extends to drive the swing chute 5 to the working position, and the driving cylinder 7 retracts to return the swing chute 5 to the standby position. The end of the swing chute 5 away from the hinge point is bent, and the end of the swing chute 5 close to the hinge point is in an inverted cone hopper shape. When the swing chute 5 is in the working position, the bent pipe mouth of the swing chute 5 faces the steel outlet of the electric furnace 9, and the inverted cone hopper-shaped pipe mouth of the swing chute 5 faces the discharge port at the bottom of the intermediate collecting hopper 4. At this time, the electric gate valve 402 is opened, and the sand falls from the discharge port at the bottom of the intermediate collecting hopper 4 into the inverted cone hopper-shaped pipe mouth, slides to the pipe mouth at the bent end, and fills the steel outlet of the electric furnace 9 with sand. After the sand filling is completed, the electric gate valve 402 is closed to prepare for the sand filling of the next furnace. When the driving cylinder 7 is retracted, the swing chute 5 swings to the standby position without affecting the operation and lifting of the electric furnace equipment. The discharger 3 in this embodiment (this embodiment also uses an electric gate valve to improve the response speed), the electric gate valve 402, the weighing sensor 403, the driving cylinder 7, etc. are all electrically connected to the external controller to achieve automatic linkage. The specific control methods and devices are all existing technologies and will not be repeated here.

[0028] Specific working principle:

[0029] The operator adds materials to the silo 1 on the feeding platform and puts the sand bags into the silo 1. The bag breaker 101 in the silo 1 can directly pierce the sand bags to reduce manual operation. After the silo 1 is filled, the valve of the discharger 3 is controlled to open the silo 1, and the sand enters the hopper 401 of the intermediate collecting hopper 4 through the discharger 3. At this time, the weighing sensor 403 shows the weight change. When the weight change reaches the weight of the sand filling amount, the valve of the discharger 3 is controlled to close, and the sand is stored in the intermediate collecting hopper 4 for standby use. In addition, the discharger 3 can be adjusted according to the size of the steel outlet. The amount of sand filling can be adjusted slightly at a time, so that the device can be applied to different types of electric furnaces; when the electric furnace is finished tapping and sand filling operation is required, the control driving cylinder 7 is extended to make the swing 5 to the working position, and the bending pipe mouth of the swing chute 5 is facing the steel outlet of the electric furnace 9. At this time, the electric gate valve 402 is opened, and the sand material leaks down and fills the steel outlet through the swing chute 5. After the sand material is filled, the electric gate valve 402 is closed, the control driving cylinder 7 is retracted, and the swing chute 5 is retracted to the standby position of the bracket 2 to prepare for the next furnace sand filling work. The main structure of this device is far away from the electric furnace, the operating environment is relatively safe, the structure is simple, the sand adding work is simple and fast, and the degree of intelligence is high, which ensures the safety of personnel.

[0030] 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. An automatic sand filling device for a swing type electric furnace tapping port, comprising an electric furnace (9), characterized in that: A silo (1), an intermediate material collecting hopper (4) and a swing chute (5) are sequentially arranged on one side of the electric furnace (9) along the material flow direction, a hopper (401) is arranged on the top of the intermediate material collecting hopper (4), and an electric gate valve (402) and a weighing sensor (403) are installed on the bottom of the intermediate material collecting hopper (4); it also includes a driving cylinder (7), the swing chute (5) is rotatably installed below the intermediate material collecting hopper (4), and the swing chute (5) pivots around the connection between it and the intermediate material collecting hopper (4). When the driving cylinder (7) is extended, the swing chute (5) is driven to the working position, and the intermediate material collecting hopper (4) fills sand into the steel outlet of the electric furnace (9) through the swing chute (5); when the driving cylinder (7) is retracted, the swing chute (5) returns to the standby position.

2. The automatic sand filling device for the tapping port of a swing type electric furnace according to claim 1 is characterized in that: The connection point is located directly below the middle collecting hopper (4), specifically a hinge support (6), and the swing chute (5) is pivoted via the hinge support (6).

3. The automatic sand filling device for the tapping port of a swing type electric furnace according to claim 1 is characterized in that: One end of the swing chute (5) away from the connection is bent, and when the swing chute (5) is in the working position, the bent pipe opening of the swing chute (5) faces the steel outlet of the electric furnace (9).

4. The automatic sand filling device for the tapping port of a swing type electric furnace according to claim 1, characterized in that: One end of the swing chute (5) close to the connection is in the shape of an inverted cone hopper, and when the swing chute (5) is in the working position, the inverted cone hopper-shaped pipe opening of the swing chute (5) faces the discharge port at the bottom of the intermediate collecting hopper (4).

5. The automatic sand filling device for the tapping port of a swing type electric furnace according to claim 1 is characterized in that: A bag breaker (101) is provided in the silo (1).

6. The automatic sand filling device for the tapping hole of a swing type electric furnace according to claim 1, characterized in that: It also comprises a support (2), which is a steel structure support having at least two layers of platform structure.

7. The automatic sand filling device for the tapping hole of a swing type electric furnace according to claim 1, characterized in that: A discharger (3) is provided at the bottom of the silo (1), and the discharger (3) is electrically connected to an external controller.

8. The automatic sand filling device for the tapping hole of a swing type electric furnace according to claim 7, characterized in that: The discharger (3) is a star-shaped discharger, a screw feeder, a rotary feeder, an electric gate valve or a pneumatic gate valve.

9. The automatic sand filling device for the tapping hole of a swing type electric furnace according to claim 1, characterized in that: The electric gate valve (402) is electrically connected to an external controller.

10. The automatic sand filling device for the tapping hole of a swing type electric furnace according to claim 1, characterized in that: The hopper volume of the intermediate collecting hopper (4) is not less than the primary sand filling amount required for the steel outlet of the electric furnace.

Images