Steel scrap cake pressing belt synchronous adding device

Abstract

The utility model discloses a steel scrap cake pressing belt synchronous adding device, and relates to the technical field of steel scrap cake pressing additive adding. The steel scrap cake pressing belt synchronous adding device comprises a steel scrap cake pressing machine feeding port, a steel scrap cake pressing machine feeding belt conveyor and an additive feeding belt conveyor, and an outlet of the steel scrap cake pressing machine feeding belt conveyor and an outlet of the additive feeding belt conveyor are located above the steel scrap cake pressing machine feeding port. According to the steel scrap cake pressing belt synchronous adding device, the roller shafts of the additive conveying belt are driven through power of the roller shafts of the steel scrap conveying belt, on one hand, power is provided for the additive conveying belt, on the other hand, the control cost is saved, and additives can be automatically conveyed while steel scraps are conveyed.

Description

Technical Field

[0001] This utility model relates to the field of steel chip pressing additive technology, specifically a steel chip pressing belt synchronous adding device. Background Technology

[0002] In order to control costs, steel mills are increasingly focusing on briquette scrap, made from steel chips, shavings, welding slag, granulated steel, and iron-containing slag, when selecting scrap for converters. Some steel mills even add more than 20% steel chips or shavings to their long-process scrap briquettes. However, due to factors such as converter heat balance, further increasing the scrap ratio has become quite difficult.

[0003] In electric arc furnace (EAF) steelmaking, to reduce costs, the scrap materials used in EAFs are mostly medium scrap and sheared scrap. This is because EAFs primarily rely on electrodes to melt scrap, and heavy scrap requires a long melting time, resulting in higher costs. Additionally, EAFs tend to prefer high-carbon materials, and steel mills throughout the entire process may add a certain proportion of molten iron to the EAF based on economic considerations. As the proportion of molten iron in steel mills decreases, the proportion of scrap steel in EAF smelting further increases, posing greater challenges to the heat and time requirements for melting the molten pool.

[0004] To increase the scrap steel ratio in smelting, the traditional method of adding carbon-based materials to converters involves injecting or adding powdered or granular carbon into the furnace. The method used in electric arc furnaces is similar. The biggest advantage of this method is its ease of operation and low cost. However, because the carbon-based materials are added in bulk, some of the fuel rises directly to the surface of the molten steel and burns off before it enters the molten pool through carburizing or combustion, thus reducing the yield of the carbon-based materials, limiting their contribution to the furnace heat, and resulting in significant waste.

[0005] Adding too much briquettes during the steelmaking process can lead to insufficient heat. In addition, the briquettes contain a lot of iron oxides, which can cause a more intense oxidation reaction in the converter after adding more steel shavings briquettes. This can even cause problems such as splashing, which affect production and the environment, and also affect the metal yield of the briquettes.

[0006] Existing technologies, such as CN202311669832.8, describe a method for producing rapidly melting steel shavings or steel chip cakes, which proposes adding additives to the steel shavings or steel chip cakes to improve their performance in smelting scrap steel.

[0007] Currently, in the experimental stage, the additives needed for pressing individual steel chips or shavings can be added to the pressing chamber manually or carried into the pressing chamber along with the steel chips or shavings. However, in the actual production stage, there is no efficient way to add them in the existing technology.

[0008] In addition, additives are usually in powder form. However, if they are not fully mixed with steel chips or shavings during the addition process, the additive powder in the pressed steel chip or shavings cake will not be dispersed enough, which will reduce the performance of subsequent scrap steel smelting. Utility Model Content

[0009] (a) Technical problems to be solved

[0010] To address the shortcomings of existing technologies, this utility model provides a synchronous adding device for steel chip pressing belts, which solves the following technical problems:

[0011] 1. Existing technologies lack an automatic batch additive addition device for steel scrap briquettes with additives;

[0012] 2. Existing technologies lack devices for fully mixing additives and steel scrap.

[0013] (2) Technical solution

[0014] To achieve the above objectives, this utility model provides the following technical solution: a synchronous addition device for steel scrap briquetting conveyors, comprising a steel scrap briquetting machine feeding port, a steel scrap briquetting machine feeding conveyor, and an additive feeding conveyor. The outlets of the steel scrap briquetting machine feeding conveyor and the additive feeding conveyor are located above the steel scrap briquetting machine feeding port. The feed from the steel scrap briquetting machine feeding conveyor and the additive feeding conveyor can enter the steel scrap briquetting machine feeding port. The rotating shaft of the roller at the outlet of the steel scrap briquetting machine feeding conveyor is... The conveyor belt has an extension section A, on which a pulley A is mounted. The shaft of the roller at the outlet of the additive feeding conveyor is extended by an extension section B, at the end of which a gear A is mounted. A pulley B is mounted on the outer side of the additive feeding conveyor, and a gear B is mounted on the section of pulley B near gear A. Gear A can mesh with gear B. The pulley A and pulley B are driven by a belt. The pulley B drives the drive shaft of the additive feeding conveyor to rotate through gears A and B.

[0015] Preferably, the pulley B is mounted on the outside of the additive feeding conveyor via a bearing bracket. The bearing bracket has a sliding hole, and the bearing inside the bearing bracket is slidably connected to the sliding hole. A spring is provided between the bearing and the inner wall of the sliding hole. When the shaft of the pulley B is not under force, the gear B connected to the pulley B does not mesh with the gear A. When the pulley B is subjected to a force in the direction of the gear A, the gear B connected to the pulley B meshes with the gear A.

[0016] Preferably, the lower end of the feeding port of the steel scrap briquetting machine is connected to a vibrating section, and a vibrating device is provided on the side of the vibrating section.

[0017] Preferably, both the upper and lower ends of the vibrating section are provided with corrugated sections.

[0018] Preferably, the additive feeding conveyor is equipped with a weighing module B, and the steel chip briquetting machine feeding conveyor is equipped with a weighing module A.

[0019] Preferably, the device includes a controller and an additive hopper. An electrically controlled valve is installed at the lower end of the additive hopper. Weighing module B, weighing module A, and the electrically controlled valve are all electrically connected to the controller. The controller can adjust the opening of the electrically controlled valve based on the weight ratio between the additive and steel scrap, as well as the actual weighing weight of weighing modules B and A, thereby controlling the additive addition ratio.

[0020] Preferably, a controller is included, and an electronically controlled clutch is provided between gear A and gear B. The electronically controlled clutch is electrically connected to the controller, and the controller can control the opening and closing of the electronically controlled clutch. When the electronically controlled clutch is in the open position, gear A and gear B are not engaged; when the electronically controlled clutch is in the engaged position, gear A and gear B are engaged.

[0021] Preferably, a clutch control lever is sleeved on the shaft of the pulley B. When the clutch control lever is pulled down, it can drive the shaft of the pulley B and the gear B at the end of the shaft to move downward, and make the gear B mesh with the gear A. When the clutch control lever is pushed up, it can drive the shaft of the pulley B and the gear B at the end of the shaft to move upward, and make the gear B disengage from the gear A.

[0022] Preferably, the vibrating device includes a cam, which periodically pushes the vibrating section when it rotates, thereby achieving uniform mixing of steel chips and additives.

[0023] (III) Beneficial Effects

[0024] This utility model provides a synchronous feeding device for steel chip pressing belts. It has the following beneficial effects:

[0025] (1) The steel chip pressing belt synchronous addition device uses the power of the steel chip conveyor belt roller to drive the roller of the additive conveyor belt. On the one hand, it provides power for the additive conveyor belt, and on the other hand, it saves control costs. The additive can also be automatically conveyed while the steel chips are being conveyed.

[0026] (2) The steel chip pressing belt synchronous addition device can control the rotation of the roller shaft of the additive conveying belt by setting a clutch device on the roller shaft of the additive conveying belt.

[0027] (3) The steel chip pressing belt synchronous addition device improves the mixing degree of additives and steel chips by setting a vibration structure below the feeding port. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the utility model;

[0029] Figure 2 A schematic diagram showing the clutch mechanism in the disengaged state;

[0030] Figure 3 This is a schematic diagram showing the clutch in the engaged position.

[0031] In the diagram: 1. Feed inlet of steel scrap briquetting machine; 11. Vibration section; 2. Feed conveyor belt of steel scrap briquetting machine; 21. Pulley A; 22. Weighing module A; 3. Additive feeding conveyor belt; 31. Pulley B; 32. Weighing module B; 33. Drive shaft; 4. Clutch mechanism; 41. Electrically controlled valve; 44. Clutch control lever; 5. Additive hopper; 6. Controller; 7. Belt; 8. Vibration device. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] A synchronous feeding device for steel scrap briquetting belts includes a steel scrap briquetting machine feeding port 1, a steel scrap briquetting machine feeding belt conveyor 2, and an additive feeding belt conveyor 3. The outlets of the steel scrap briquetting machine feeding belt conveyor 2 and the additive feeding belt conveyor 3 are located above the steel scrap briquetting machine feeding port 1. The feed from the steel scrap briquetting machine feeding belt conveyor 2 and the additive feeding belt conveyor 3 can enter the steel scrap briquetting machine feeding port 1. The rotating shaft of the roller at the outlet of the steel scrap briquetting machine feeding belt conveyor 2 is provided with an extension section A. The additive feeding conveyor belt 3 is equipped with a pulley A21. The shaft of the roller at the outlet of the additive feeding conveyor belt 3 is provided with an extension section B. Gear A is provided at the end of the extension section B. A pulley B31 is provided on the outside of the additive feeding conveyor belt 3. Gear B is provided on the section of pulley B31 near gear A. Gear A can mesh with gear B. The pulley A21 and pulley B31 are driven by a belt 7. The pulley B31 drives the drive shaft 33 of the additive feeding conveyor belt 3 to rotate through gear A and gear B.

[0035] in:

[0036] To control the additive ratio, a controller 6 and an additive hopper 5 are included. A weighing module B32 is installed on the additive feeding conveyor 3, and a weighing module A22 is installed on the steel scrap briquetting machine feeding conveyor 2. An electrically controlled valve 41 is installed at the lower end of the additive hopper 5. Weighing modules B32, A22, and 41 are all electrically connected to the controller 6. The controller 6 can adjust the opening of the electrically controlled valve 41 according to the weight ratio between the additive and the steel scrap and the actual weighing weight of weighing modules B32 and A22, thereby controlling the additive addition ratio.

[0037] To control the additive feeding conveyor belt 3, an electrically controlled clutch is installed between gear A and gear B. The electrically controlled clutch is electrically connected to the controller 6, which controls the opening and closing of the clutch. When the electrically controlled clutch is in the open position, gear A and gear B are not engaged; when the electrically controlled clutch is in the engaged position, gear A and gear B are engaged. The electrically controlled clutch is a type of clutch in the prior art.

[0038] The additive may be a carbon-based material powder or iron oxide additive mentioned in CN202311669832.8, "A rapidly melting steel shavings or steel chip briquettes and their production methods".

[0039] Example 2

[0040] Based on Example 1, pulley B31 is mounted on the outside of additive feeding conveyor belt 3 via a bearing bracket. A sliding hole is provided on the bearing bracket, and the bearing inside the bearing bracket is slidably connected to the sliding hole. A spring is provided between the bearing and the inner wall of the sliding hole. When the shaft of pulley B31 is not under force, gear B connected to pulley B31 does not mesh with gear A. When pulley B31 is subjected to a force in the direction of gear A, gear B connected to pulley B31 meshes with gear A. A clutch control lever 44 is sleeved on the shaft of pulley B31. When the clutch control lever 44 is pulled downwards, it can drive the shaft of pulley B31 and the gear B at the end of the shaft to move downwards, causing gear B to mesh with gear A. When the clutch control lever 44 is pushed upwards, it can drive the shaft of pulley B31 and the gear B at the end of the shaft to move upwards, causing gear B to disengage from gear A.

[0041] Although the additive feeding conveyor belt 3 can be controlled by the clutch mechanism 4 in this embodiment as in embodiment 1, this embodiment emphasizes the mechanical mechanism in the control and does not specifically limit the control method of the clutch control lever 44.

[0042] Example 3

[0043] Based on Example 1, a vibrating section 11 is connected to the lower end of the feeding port 1 of the steel scrap briquetting machine. A vibrating device 8 is provided on the side of the vibrating section 11. The vibrating device 8 includes a cam. When the cam rotates, it periodically pushes the vibrating section 11, thereby achieving uniform mixing of steel scrap and additives. Corrugated sections 12 are provided at both the upper and lower ends of the vibrating section 11. The cam mechanism is a prior art cam mechanism, and its rotational speed and eccentric counterweight are parameters set in the prior art.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A synchronous feeding device for steel scrap briquetting conveyors, comprising a steel scrap briquetting machine feeding port (1), a steel scrap briquetting machine feeding conveyor belt (2), and an additive feeding conveyor belt (3), wherein the outlet of the steel scrap briquetting machine feeding conveyor belt (2) and the outlet of the additive feeding conveyor belt (3) are located above the steel scrap briquetting machine feeding port (1), and the feed from the steel scrap briquetting machine feeding conveyor belt (2) and the additive feeding conveyor belt (3) can enter the steel scrap briquetting machine feeding port (1), characterized in that: The roller at the outlet of the steel chip briquetting machine feeding conveyor (2) has an extension section A, on which a pulley A (21) is provided. The roller at the outlet of the additive feeding conveyor (3) has an extension section B, at the end of which a gear A is provided. A pulley B (31) is provided on the outside of the additive feeding conveyor (3). A gear B is provided on the section of the pulley B (31) near the gear A. The gear A can mesh with the gear B. The pulley A (21) and the pulley B (31) are driven by a belt (7). The pulley B (31) drives the drive shaft (33) of the additive feeding conveyor (3) to rotate through the gear A and the gear B.

2. The steel chip pressing disc synchronous addition device according to claim 1, characterized in that: The pulley B (31) is mounted on the outside of the additive feeding conveyor (3) via a bearing bracket. A sliding hole is provided on the bearing bracket. The bearing inside the bearing bracket is slidably connected to the sliding hole. A spring is provided between the bearing and the inner wall of the sliding hole. When the shaft of the pulley B (31) is not under force, the gear B connected to the pulley B (31) does not mesh with the gear A. When the pulley B (31) is subjected to a force in the direction of the gear A, the gear B connected to the pulley B (31) meshes with the gear A.

3. The steel chip pressing disc synchronous addition device according to claim 1, characterized in that: The lower end of the feeding port (1) of the steel chip briquetting machine is connected to a vibrating section (11), and a vibrating device (8) is provided on the side of the vibrating section (11).

4. The steel chip pressing disc synchronous addition device according to claim 3, characterized in that: The vibrating section (11) is provided with corrugated sections (12) at both the upper and lower ends.

5. The steel chip pressing disc synchronous addition device according to claim 1, characterized in that: The additive feeding conveyor belt (3) is equipped with a weighing module B (32), and the steel chip briquetting machine feeding conveyor belt (2) is equipped with a weighing module A (22).

6. The steel chip pressing disc synchronous addition device according to claim 5, characterized in that: Includes a controller (6) and an additive hopper (5). The lower end of the additive hopper (5) is equipped with an electrically controlled valve (41). The weighing module B (32), weighing module A (22), and electrically controlled valve (41) are all electrically connected to the controller (6). The controller (6) can adjust the opening of the electrically controlled valve (41) according to the weight ratio between the additive and the steel scrap and the actual weighing weight of the weighing module B (32) and the weighing module A (22), thereby controlling the addition ratio of the additive.

7. The steel chip pressing and conveyor belt synchronous addition device according to claim 1, characterized in that: Includes a controller (6), an electric clutch is provided between gear A and gear B, the electric clutch is electrically connected to the controller (6), the controller (6) can control the opening and closing of the electric clutch, when the electric clutch is in the open position, gear A and gear B are not meshed; When the electronically controlled clutch is in the engaged position, gear A and gear B are engaged.

8. The steel chip pressing and conveyor belt synchronous addition device according to claim 2, characterized in that: A clutch control lever (44) is sleeved on the shaft of the pulley B (31). When the clutch control lever (44) is pulled down, it can drive the shaft of the pulley B (31) and the gear B at the end of the shaft to move downward, and make the gear B mesh with the gear A. When the clutch control lever (44) is pushed up, it can drive the shaft of the pulley B (31) and the gear B at the end of the shaft to move upward, and make the gear B disengage from the gear A.

9. The steel chip pressing disc synchronous addition device according to claim 3, characterized in that: The vibrating device (8) includes a cam that periodically pushes the vibrating section (11) when the cam rotates, thereby achieving uniform mixing of steel chips and additives.

Images