Efficient blast furnace slag conveyor

Abstract

The utility model relates to the technical field of slag treatment, and discloses an efficient blast furnace slag conveyor which comprises an inclined conveying plate, a plurality of cooling pipes extending to the two ends of the inclined conveying plate are embedded in the inclined conveying plate, and a baffle capable of being opened and closed is arranged at the lower end of the inclined conveying plate. The conveying mechanism comprises a conveying cylinder and a material receiving hopper, the conveying cylinder is arranged below the lower end of the inclined conveying plate, an auger driven by a motor is arranged in the conveying cylinder, the material receiving hopper is fixedly arranged at the front end of the auger above the conveying cylinder, is arranged under the inclined conveying plate and is communicated with the conveying cylinder, and a discharging port is formed in the position, located at the tail end of the auger, of the lower wall of the conveying cylinder. The blast furnace slag conveying device has the advantages of having the heat dissipation capacity and the temporary storage function, and enabling the blast furnace slag conveying safety to be higher.

Description

Technical Field

[0001] This utility model relates to the field of slag treatment technology, specifically to a high-efficiency conveyor for blast furnace slag. Background Technology

[0002] A blast furnace is a core piece of equipment in the iron and steel industry used for smelting pig iron. It has a vertical cylindrical shape and typically consists of a throat, furnace body, furnace waist, furnace belly, and hearth. Its working principle involves charging iron ore, coke, flux, and other raw materials from the top of the furnace, while preheated air is blown in through the tuyeres in the belly, causing the coke to burn and produce high-temperature gas. As the gas rises, it undergoes a series of physicochemical reactions with the furnace charge, reducing the iron ore to liquid pig iron, while the slag floats above the molten iron and is ultimately discharged from the taphole and slag outlet in the hearth, respectively.

[0003] In steel production, the slag discharged from blast furnaces carries a large amount of residual heat, with temperatures typically reaching 1400℃-1600℃. Currently, most companies use traditional conveyor belts to transport slag, but this process has significant drawbacks: the high-temperature slag accumulates directly on the conveyor belt, and the heat is rapidly conducted to the metal structures such as the conveyor belt frame and rollers, leading to carbonization of bearing grease, premature aging and cracking of the rubber conveyor belt, and even thermal deformation of metal components or cracking of welds. Utility Model Content

[0004] To solve the above-mentioned problems, this utility model proposes a high-efficiency blast furnace slag conveyor with heat dissipation and temporary storage functions, which makes the conveying of blast furnace slag safer.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a high-efficiency blast furnace slag conveyor, comprising:

[0006] An inclined conveyor plate is provided with a support below, and several cooling pipes extending to both ends are embedded inside. A baffle that can be opened and closed is provided at the lower end.

[0007] The conveying mechanism includes a conveying cylinder and a receiving hopper. The conveying cylinder is located below the lower end of the inclined conveying plate and has a motor-driven auger inside. The receiving hopper is fixedly located at the front end of the auger above the conveying cylinder. It is located directly below the inclined conveying plate and communicates with the conveying cylinder. The lower wall of the conveying cylinder has a discharge port at the end of the auger.

[0008] Furthermore, the upper wall of the inclined conveyor plate is made of a heat-conducting material, the upper wall is an arc surface that is concave downward in the middle, and several deceleration strips are provided on the upper wall.

[0009] Furthermore, two supports are provided at both ends of the inclined conveyor plate, and the bottom surfaces of the two supports are flush.

[0010] Furthermore, the cooling pipes are equidistantly distributed along the bending direction of the upper wall of the inclined conveyor plate, and their ends extend out of the inclined conveyor plate.

[0011] Furthermore, the inclined conveyor plate is symmetrically provided with support plates on both sides near the lower end, and a support frame is connected to the support plate near the lower end by a support rod. The baffle is slidably disposed between the two support plates and is driven to lift and lower by an electric push rod fixed on the support frame to realize opening and closing.

[0012] Furthermore, an elevating edge is integrally formed at the upper edge of the receiving hopper.

[0013] Compared with existing technologies, the advantages of this invention are as follows: The inclined conveyor plate is made of a heat-conducting material, and the arc-shaped structure of the upper wall not only guides the slag to converge but also increases the contact area with air, accelerating heat conduction. The internally embedded cooling pipes are evenly distributed along the arc surface. After connecting to external refrigeration equipment, they can evenly cover the conveyor plate, quickly removing heat from the slag and preventing high temperatures from affecting equipment operation. Its temporary storage function relies on the cooperation of an openable / closable baffle and a receiving hopper. The baffle is driven by an electric push rod, which can precisely control the timing and flow rate of slag feeding. When temporary storage is needed, closing the baffle allows the slag to temporarily remain on the conveyor plate, increasing the slag cooling time and ensuring sufficient cooling. Combined with the raised edge design of the receiving hopper, it prevents slag splashing, ensuring controllable conveying rhythm and avoiding the safety hazards caused by direct accumulation of high-temperature slag. This dual design makes the conveying process safer and more reliable. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 This is the front view of this utility model;

[0016] Figure 3 This is a top view of the present invention;

[0017] Figure 4 This is a side view of the present invention.

[0018] As shown in the figure: 1. Inclined conveyor plate; 2. Support frame; 3. Cooling pipe; 4. Baffle; 5. Conveyor cylinder; 6. Receiving hopper; 7. Motor; 8. Discharge port; 9. Speed ​​reduction bar; 10. Support plate; 11. Support rod; 12. Support frame; 13. Electric push rod. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] Combined with appendix Figure 1 Appendix Figure 3A high-efficiency conveyor for blast furnace slag includes: an inclined conveyor plate 1, the upper wall of which is made of a heat-conducting material and has an arc surface that is concave downward in the middle. Several deceleration strips 9 are provided on the upper wall, which can accelerate the heat conduction of slag and guide the slag to gather through the arc surface to avoid spillage. The deceleration strips 9 can also slow down the downward speed of slag and extend the cooling time.

[0021] Combined with appendix Figure 1 Appendix Figure 2 A support 2 is provided below the inclined conveyor plate 1. Two supports 2 are provided at both ends of the inclined conveyor plate 1, and the bottom surfaces of the two supports 2 are flush, which ensures the stability of the conveyor plate installation, makes the slag conveying process more stable, and avoids the conveying efficiency being affected by tilting or shaking.

[0022] Combined with appendix Figure 1 Appendix Figure 4 The inclined conveyor plate 1 has several cooling pipes 3 embedded inside, extending to both ends of it. The cooling pipes 3 are evenly distributed along the bending direction of the upper wall of the inclined conveyor plate 1, and their ends extend out of the inclined conveyor plate 1. They can evenly cover the upper wall of the conveyor plate and efficiently remove the heat from the slag. The extended ends are connected to external refrigeration equipment.

[0023] Combined with appendix Figure 1 The inclined conveyor plate 1 is provided with an openable and closable baffle 4 at its lower end. The inclined conveyor plate 1 is provided with symmetrical support plates 10 on both sides near its lower end. The support plates 10 are connected to a support frame 12 by a support rod 11 near their lower ends. The baffle 4 is slidably disposed between the two support plates 10 and is driven to open and close by an electric push rod 13 fixed on the support frame 12, which facilitates precise control of the timing and flow rate of slag feeding.

[0024] Combined with appendix Figure 1 Appendix Figure 2 The conveying mechanism includes a conveying cylinder 5 and a receiving hopper 6. The conveying cylinder 5 is located below the lower end of the inclined conveying plate 1 and contains an auger driven by a motor 7. The receiving hopper 6 is fixedly located above the conveying cylinder 5 at the front end of the auger, directly below the inclined conveying plate 1 and communicating with the conveying cylinder 5. The lower wall of the conveying cylinder 5 has a discharge port 8 at the end of the auger. An integrally formed raised edge is provided on the upper edge of the receiving hopper 6 to prevent slag from splashing out of the hopper during its descent, ensuring that the slag can smoothly enter the conveying cylinder 5 and improving the reliability of the conveying process.

[0025] The specific implementation of this utility model is as follows: A conveyor is installed near the blast furnace, with the upper end of the inclined conveyor plate 1 positioned below the blast furnace slag outlet. The conveyor is connected to an external power source, and the cooling pipe 3 is connected to an external circulating refrigeration system. Blast furnace slag falls from the upper end of the inclined conveyor plate 1. The arc surface of the heat-conducting upper wall of the inclined conveyor plate 1 guides the slag towards the center, and the deceleration strip 9 slows down the slag's descent speed, extending the cooling time on the plate. Simultaneously, the cooling pipe 3 inside the inclined conveyor plate 1 is connected to the external refrigeration system. The cooling pipes 3, evenly distributed along the arc surface, uniformly remove heat from the slag. When the slag slides to the lower end of the inclined conveyor plate 1, the baffle 4 can be raised and lowered via an electric push rod 13 to control the discharge. If temporary storage is required to extend the cooling time, the baffle 4 is lowered and closed, and the slag remains temporarily on the inclined conveyor plate 1. If conveying is required, the baffle 4 is raised and opened, and the slag falls into the lower receiving hopper 6. The increased height of the receiving hopper 6 prevents slag from splashing out. The slag then enters the conveyor cylinder 5, and the motor 7 drives the auger to deliver the slag from the discharge port 8 of the conveyor cylinder 5. Throughout the process, the support frame 2 ensures the stability of the inclined conveyor plate 1, guaranteeing smooth operation of the equipment.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; for those skilled in the art, the specific meaning of the above term in this utility model can be understood according to the specific circumstances.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-efficiency blast furnace slag conveyor, characterized in that, include: An inclined conveyor plate (1) is provided with a support (2) below, and several cooling pipes (3) extending to both ends of the plate are embedded inside. A baffle (4) that can be opened and closed is provided at the lower end. The conveying mechanism includes a conveying cylinder (5) and a receiving hopper (6). The conveying cylinder (5) is located below the lower end of the inclined conveying plate (1) and has an auger driven by a motor (7) inside. The receiving hopper (6) is fixedly located at the front end of the auger above the conveying cylinder (5). It is located directly below the inclined conveying plate (1) and communicates with the conveying cylinder (5). The lower wall of the conveying cylinder (5) has a discharge port (8) at the end of the auger.

2. The high-efficiency blast furnace slag conveyor according to claim 1, characterized in that: The upper wall of the inclined conveyor plate (1) is made of heat-conducting material, and the upper wall is an arc surface that is concave downward in the middle, and several deceleration strips (9) are provided on the upper wall.

3. The high-efficiency blast furnace slag conveyor according to claim 1, characterized in that: The bracket (2) is provided at both ends of the inclined conveyor plate (1), and the bottom surfaces of the two brackets (2) are flush.

4. The high-efficiency blast furnace slag conveyor according to claim 1, characterized in that: The cooling pipes (3) are distributed at equal intervals along the bending direction of the upper wall of the inclined conveyor plate (1), and their ends extend out of the inclined conveyor plate (1).

5. The high-efficiency blast furnace slag conveyor according to claim 1, characterized in that: The inclined conveyor plate (1) is symmetrically provided with support plates (10) on both sides near the lower end. The support plate (10) is connected to a support frame (12) by a support rod (11) near the lower end. The baffle (4) is slidably disposed between the two support plates (10) and is driven to lift and lower by an electric push rod (13) fixed on the support frame (12) to achieve opening and closing.

6. The high-efficiency blast furnace slag conveyor according to claim 1, characterized in that: The receiving hopper (6) has an integrally formed heightening edge at its upper edge.

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