A molten steel alloy precision adding device for a refining furnace

Abstract

The utility model relates to a molten steel alloy precision adding device for a refining furnace, including alloy bin, it is equipped with first discharge gate, weighing bin, it includes weighing bin body and weighing sensor, weighing bin body communicates with first discharge gate, the bottom of weighing bin body is equipped with second discharge gate, and the second discharge gate sets up valve, and weighing sensor is used for weighing the material in weighing bin body, control unit, it includes the controller of electric connection valve, weighing sensor. The utility model can weigh alloy adding amount and add alloy to molten steel ladle automatically, greatly improve the precision of adding amount, also reduce the working strength of worker.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking equipment technology, and in particular to a device for precise addition of molten steel alloys for refining furnaces. Background Technology

[0002] In the steelmaking process of a refining furnace, after the molten steel is tapped from the furnace, a small amount of precious alloys needs to be added to the ladle containing the molten steel for elemental adjustment. The currently commonly used manual addition method has many drawbacks. For example, manually adding alloys to the ladle with a shovel is not only time-consuming and labor-intensive with low work efficiency, but also makes it difficult to accurately control the quantity, which can easily lead to alloy waste or insufficient addition, affecting the quality of the molten steel. Therefore, the existing process needs to be improved in terms of efficiency and precision. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problems of high labor intensity and low precision in the existing technology of manually adding alloys, and to provide a precise alloy adding device for molten steel in refining furnace, which can weigh the amount of alloy to be added and automatically add the alloy to the molten steel ladle, greatly improving the accuracy of the addition amount and reducing the labor intensity of workers.

[0004] To solve the above-mentioned technical problems, this utility model provides a device for precise alloy addition in molten steel for refining furnaces, comprising, The alloy hopper is equipped with a first discharge port; A weighing hopper includes a weighing hopper body and a weighing sensor. The weighing hopper body is connected to a first discharge port. A second discharge port is provided at the bottom of the weighing hopper body. A valve is provided at the second discharge port. The weighing sensor is used to weigh the material in the weighing hopper body. The control unit includes a controller electrically connected to the valve and the weighing sensor.

[0005] In one embodiment of this utility model, both the alloy hopper and the weighing hopper body are set above the ground.

[0006] In one embodiment of the present invention, a silo platform is further provided above the ground, and the alloy silo is disposed on the silo platform.

[0007] In one embodiment of this utility model, a vibrating feeder with an inlet end and an outlet end is further included. The inlet end is connected to the first outlet, and the outlet end is connected to the weighing bin body.

[0008] In one embodiment of this utility model, it further includes a plurality of alloy silos and a plurality of vibrating feeders.

[0009] In one embodiment of this utility model, the controller is electrically connected to the vibrating feeder.

[0010] In one embodiment of this utility model, the alloy hopper is positioned higher than the weighing hopper body.

[0011] In one embodiment of this utility model, the second discharge port is connected to a feeding pipe, which is inclined or vertically arranged.

[0012] In one embodiment of this utility model, a weighing bin platform is also included, which is set above the ground, and the weighing bin body is set on the weighing bin platform.

[0013] In one embodiment of this utility model, the valve includes a slide gate valve.

[0014] In one embodiment of the present invention, the weighing hopper further includes a load cell transmitter, which is electrically connected to the weighing sensor and the controller.

[0015] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects: The present invention describes a precise alloy addition device for molten steel in a refining furnace. It utilizes a weighing sensor to weigh the material within the weighing chamber, accurately controlling the amount of alloy added and preventing insufficient or excessive addition. A controller opens and closes the valves, automatically adding the alloy from the weighing chamber into the molten steel ladle, replacing manual addition and eliminating the need to approach the high-temperature ladle, thus reducing worker workload. Furthermore, the use of an alloy hopper for material storage avoids frequent loading, improving loading efficiency. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. Figure 1 This is a schematic diagram of the steel alloy precision addition device, steel ladle, and steel ladle car used in a refining furnace in a preferred embodiment of the present invention.

[0017] Explanation of the reference numerals in the accompanying drawings: 1. Alloy silo; 2. Weighing silo; 3. Valve; 4. Vibrating feeder; 5. Weighing silo platform; 6. Silo platform; 7. Feeding pipe; 8. Ladle; 9. Ladle car. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0019] Reference Figure 1 As shown, in one embodiment of this utility model, a device for precisely adding molten steel alloys to a refining furnace is disclosed, comprising: Alloy hopper 1, which is equipped with a first discharge port; Weighing hopper 2 includes a weighing hopper body and a weighing sensor. The weighing hopper body is connected to the first discharge port. The bottom of the weighing hopper body is provided with a second discharge port. The second discharge port is equipped with a valve 3. The weighing sensor is used to weigh the material in the weighing hopper body. The control unit includes a controller electrically connected to the valve 3 and the weighing sensor.

[0020] The precise alloy addition device for molten steel in the refining furnace described in this embodiment uses a weighing sensor to weigh the material in the weighing chamber, accurately controlling the amount of alloy added and avoiding insufficient or excessive addition. The controller controls the opening and closing of valve 3, allowing the alloy in the weighing chamber to be automatically added to the ladle 8, replacing manual addition and eliminating the need to approach the high-temperature ladle 8, thus reducing the workload of workers. The alloy hopper 1 stores the material, avoiding frequent feeding and improving feeding efficiency.

[0021] Reference Figure 1 As shown, in one embodiment of this utility model, both the alloy silo 1 and the weighing silo body are set above the ground.

[0022] In one embodiment of this utility model, the first discharge port is located at the bottom of the alloy silo 1. The bottom of the alloy silo 1 and the bottom of the weighing chamber body are both funnel-shaped, which is conducive to the full discharge of materials.

[0023] In one embodiment of this utility model, the control unit is set as a PLC control system. The circuit connection structure and control relationship between the controller of the PLC control system and valve 3, weighing sensor and load transmitter mentioned below are all existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0024] Reference Figure 1 As shown, in one embodiment of this utility model, a silo platform 6 is also provided above the ground. The alloy silo 1 is provided on the silo platform 6. The silo platform 6 facilitates the operator's movement and inspection of the alloy silo 1. Furthermore, the inlet of the alloy silo 1 is provided above the silo platform 6, and its height can be level with the operator's chest to reduce the occurrence of accidents.

[0025] Reference Figure 1As shown, in one embodiment of this utility model, a vibrating feeder 4 with an inlet end and an outlet end is also included. The vibrating feeder 4 is equipped with a vibration mechanism that can generate vibration, which can convey the alloy from the alloy silo 1 to the weighing silo body at a constant and controllable rate, so as to achieve uniform and controllable feeding and prevent material bridging and blockage. Specifically, the inlet end is connected to the first outlet, and the outlet end is connected to the weighing silo body. After the vibrating feeder 4 vibrates, the alloy in the alloy silo 1 enters the vibrating feeder 4 through the inlet end and finally enters the weighing silo body through the outlet end.

[0026] Reference Figure 1 As shown, in one embodiment of this utility model, it also includes four alloy silos 1 and four vibrating feeders 4. Each alloy silo 1 is equipped with one vibrating feeder 4. The four alloy silos 1 can simultaneously store four kinds of alloys to achieve flexible proportioning of multiple alloys.

[0027] Reference Figure 1 As shown, in one embodiment of this utility model, the controller is electrically connected to the vibrating feeder 4. The operator in the main control room can flexibly control the opening and closing of the vibrating feeder 4 through the control unit to realize automatic feeding of the weighing bin body, reduce manual intervention, and eliminate the time lag of manual operation.

[0028] Reference Figure 1 As shown, in one embodiment of this utility model, the alloy hopper 1 is positioned higher than the weighing hopper body, and gravity is used to vibrate the alloy in the auxiliary alloy hopper 1 into the weighing hopper body, thereby reducing energy consumption.

[0029] Reference Figure 1 As shown, in one embodiment of this utility model, the second discharge port is connected to a feeding pipe 7, which is used to accurately feed material into the ladle 8 to reduce alloy spillage. The feeding pipe 7 is inclined downward so that the alloy can be transported outward, ensuring that there is sufficient gap between the ladle car 9 and the weighing bin 2 to prevent interference between the two. In another embodiment, the feeding pipe 7 can be set vertically. When set vertically, the feeding pipe 7 has low resistance, and the alloy material can fall faster due to gravity, making it less likely to adhere to the pipe wall, thereby reducing residue.

[0030] Reference Figure 1 As shown, in one embodiment of this utility model, a weighing bin platform 5 is also included, which is set above the ground. The weighing bin body is set on the weighing bin platform 5. The weighing bin platform 5 is convenient for the operator to walk on and inspect the weighing bin platform 5. Furthermore, the feed inlet of the weighing bin body is set above the weighing bin platform 5, and its height can be level with the operator's chest to reduce the occurrence of accidents.

[0031] In one embodiment of this utility model, the valve 3 includes a slide gate valve, which can effectively cut off the material flow, especially when processing powdered alloys, and reduce the leakage phenomenon that occurs after the valve 3 is closed.

[0032] In one embodiment of this utility model, the weighing hopper 2 further includes a load-bearing transmitter, which is electrically connected to the weighing sensor and the controller. The weighing sensor converts physical weight (force) into a weak electrical signal. The load-bearing transmitter is responsible for collecting, amplifying, filtering, and calibrating the weak and easily interfered analog signal output by the weighing sensor, and converting it into a stable, standard signal that can be transmitted over long distances to the controller.

[0033] In one embodiment of this utility model, a feeding station is provided below the weighing hopper 2. The feeding station is used for the docking of the ladle car 9, realizing fixed-point feeding.

[0034] The working principle of the precise alloy addition device for refining furnaces described in this utility model is as follows: Different alloys are pre-placed into four alloy hoppers 1. Then, the operator in the main control room uses the control unit to operate the vibrating feeder 4. The vibrating feeder 4 uses vibration to draw the alloys from the alloy hoppers 1 into the weighing hopper body. At the same time, the weighing sensor weighs the alloys in the weighing hopper body. When the weight of the alloy reaches the set addition amount, the controller controls the vibrating feeder 4 to stop vibrating, completing the preparation of the single feeding amount. When the ladle car 9 arrives, the operator opens the valve 3 through the control unit. The alloys in the weighing hopper body fall into the ladle 8 through the feeding pipe 7. After the feeding is completed, the valve 3 is closed, preparing for the next feeding.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A device for precisely adding molten steel alloys to a refining furnace, characterized in that, include, The alloy hopper is equipped with a first discharge port; A weighing hopper includes a weighing hopper body and a weighing sensor. Both the alloy hopper and the weighing hopper body are set above the ground, with the alloy hopper being set higher than the weighing hopper body. The weighing hopper body is connected to a first discharge port. A second discharge port is provided at the bottom of the weighing hopper body. The second discharge port is connected to a feeding pipe, which is set at an incline or vertical. A valve is provided at the second discharge port. The weighing sensor is used to weigh the material inside the weighing hopper body. The control unit includes a controller electrically connected to the valve and the weighing sensor; A silo platform is set above ground level, and the alloy silo is set on the silo platform; A weighing bin platform is installed above ground level, and the weighing bin body is mounted on the weighing bin platform.

2. The precise alloy addition device for molten steel in a refining furnace according to claim 1, characterized in that, It also includes a vibrating feeder with a feed end and a discharge end, wherein the feed end is connected to the first discharge port and the discharge end is connected to the weighing bin body.

3. The precise alloy addition device for molten steel in a refining furnace according to claim 2, characterized in that, It also includes multiple alloy silos and multiple vibrating feeders.

4. The device for precise addition of molten steel alloys in a refining furnace according to claim 2, characterized in that, The controller is electrically connected to the vibrating feeder.

5. The device for precise alloy addition in molten steel for a refining furnace according to claim 1, characterized in that, The valve includes a slide gate valve.

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