Comprehensive utilization device for surplus heat of molten steel

Abstract

The utility model relates to the technical field of molten steel heat utilization, in particular to a molten steel surplus heat comprehensive utilization device which comprises a machine frame and a steel ladle fixed at the inner bottom end of the machine frame. A supporting plate is fixed to the inner side wall of the rack, a loading hopper is fixed to the left end of the supporting plate, a hydraulic cylinder is fixed to the upper end of the supporting plate, the power end of the hydraulic cylinder is connected with a material blocking plate, and the material blocking plate slides leftwards and penetrates into the loading hopper. The lower part of the loading hopper is rotationally connected and communicated with a blanking shaft pipe; according to the utility model, the cutting head of the steel scrap is added into the steel ladle, so that not only can the high-temperature heat of molten steel in the steel ladle be fully utilized, but also the temperature of the molten steel can be quickly adjusted, and the production efficiency is greatly improved, thereby reducing the steelmaking processing cost through the recycling of the steel scrap; compared with an in-furnace cut head recycling mode, the adding mode has the advantages that the blowing loss is reduced, so that the recycling rate of the waste steel and iron materials is improved, and the method is economical and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of molten steel heat utilization, in particular to a device for comprehensive utilization of surplus heat of molten steel. Background Art

[0002] The steel ladle is used in steel mills and foundries to receive molten steel and perform pouring operations in front of open hearth furnaces, electric furnaces or converters. The steel ladle has two structural forms: plug rod type and sliding nozzle type. The gantry is equipped with two types: hook-off type and bearing type. The lifting mechanism of the plug rod type ladle is equipped with a sliding rod gap elimination mechanism to ensure the consistency of the plug rod center and the nozzle center after repeated use.

[0003] At present, the high steel-making temperature of the converter affects the production rhythm from time to time. The temperature adjustment process of the molten steel has a great influence on the production rhythm. Therefore, it is particularly important to achieve rapid adjustment of the molten steel temperature. When adjusting and cooling the molten steel temperature, the most effective means of cooling is to add cold materials to the molten steel, and at the same time cooperate with the ladle bottom blowing system to achieve rapid adjustment of the molten steel temperature. Secondly, the cost control of steel enterprises is still the top priority related to the survival of the enterprise. Therefore, how to effectively utilize the waste heat of the high-temperature molten steel in the ladle is particularly important. Utility Model Content

[0004] The utility model provides a device for comprehensively utilizing surplus heat of molten steel, which is beneficial to effectively utilizing the surplus heat of high-temperature molten steel in a molten steel ladle to achieve the purpose of cooling and is beneficial to reducing production costs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A device for comprehensive utilization of excess heat of molten steel, comprising a frame and a ladle, wherein the ladle is fixed to the bottom end of the frame;

[0007] A support plate is fixed to the inner side wall of the frame, a loading bucket is fixed to the left end of the support plate, a hydraulic cylinder is fixed to the upper end of the support plate, a material blocking plate is connected to the power end of the hydraulic cylinder, and the material blocking plate slides to the left and penetrates into the loading bucket;

[0008] A material discharge shaft tube is rotatably connected and communicated with the loading bucket below, the lower end of the material discharge shaft tube is connected with a material discharge inclined tube, the lower end of the material discharge inclined tube is connected with a splash cover, the splash cover covers the upper end of the ladle, and a rotary reset component is provided outside the material discharge shaft tube.

[0009] Furthermore, the material baffle plate is inclined.

[0010] Furthermore, the rotary reset assembly includes a forward and reverse motor, a main gear and a sub-gear, the forward and reverse motor is fixed to the lower end of the support plate, the main gear is connected to the power end of the forward and reverse motor, the sub-gear is fixedly sleeved on the outer periphery of the unloading shaft tube, and the main gear is meshed with the sub-gear.

[0011] Furthermore, the upper end of the splash shield is connected to an exhaust pipe.

[0012] Furthermore, the lower left end of the ladle is connected to a drain valve.

[0013] Furthermore, a temperature detector is fixed outside the ladle, and a probe of the temperature detector penetrates into the ladle.

[0014] Beneficial effects of the utility model:

[0015] 1. By storing the cut ends of scrap iron and steel in a loading bucket and then adding the cut ends of scrap iron and steel into the ladle, not only can the high temperature heat of the molten steel in the ladle be fully utilized, but also the temperature of the molten steel can be quickly adjusted, which greatly improves the production efficiency, thereby recycling the scrap iron and steel and reducing the steelmaking processing costs. This adding method has the advantage of reducing the blowing loss compared to the method of recycling the cut ends into the furnace, thereby improving the recovery rate of scrap iron and steel, which is economical and practical;

[0016] 2. By covering the ladle with a splash guard, it is helpful to prevent molten steel from splashing out of the ladle and injuring people, thereby reducing safety accidents and making the operation process safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall blanking working structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall maintenance work structure of the utility model.

[0020] Frame 1, loading bucket 2, ladle 3, mesh concave box 4, support plate 5, hydraulic cylinder 6, material blocking plate 7, unloading shaft tube 8, unloading inclined tube 9, splash cover 10, exhaust pipe 11, forward and reverse motor 12, main gear 13, sub gear 14, temperature detector 15, drain valve 16. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0022] like Figure 1-3As shown, in this embodiment, it includes a frame 1 and a ladle 3, the ladle 3 is fixed at the bottom end of the frame 1, a support plate 5 is fixed to the inner side wall of the frame 1, a loading bucket 2 is fixed to the left end of the support plate 5, a hydraulic cylinder 6 is fixed to the upper end of the support plate 5, a baffle plate 7 is connected to the power end of the hydraulic cylinder 6, the baffle plate 7 slides to the left and penetrates into the loading bucket 2, a material discharge shaft tube 8 is rotatably connected and communicated with the loading bucket 2 below, the lower end of the material discharge shaft tube 8 is connected to a material discharge inclined tube 9, the lower end of the material discharge inclined tube 9 is connected to a splash guard 10, the splash guard 10 covers the upper end of the ladle 3, and the material baffle plate 7 is inclined.

[0023] By storing the cut ends of the scrap steel in the loading bucket 2, the baffle plate 7 is inserted into the loading bucket 2, so that the interior of the loading bucket 2 is divided into an upper and lower layer, that is, the baffle plate 7 supports the cut ends of the scrap steel. Therefore, when the cut ends of the scrap steel need to be added into the ladle 3, the baffle plate 7 is driven to move out of the loading bucket 2 by the extension of the hydraulic cylinder 6, so that the baffle plate 7 is opened in the loading bucket 2. Since the baffle plate 7 is inclined, the cut ends of the scrap steel will then slide down along the inclined surface of the baffle plate 7 to the unloading shaft tube 8 and the unloading inclined pipe 9, and then the cut heads of the scrap iron and steel material are added into the molten steel ladle 3. After the scrap iron and steel material are mixed with the high-temperature molten steel, the scrap iron and steel material and the high-temperature molten steel are fused together, which can not only make full use of the high-temperature heat of the molten steel in the molten steel ladle 3, but also realize the rapid adjustment of the molten steel temperature, greatly improve the production efficiency, so that the recycling of the scrap iron and steel material reduces the steelmaking processing cost. Compared with the method of recycling the cut heads into the furnace, this adding method has the advantage of reducing the blowing loss, thereby improving the recovery rate of the scrap iron and steel material, and is economical and practical.

[0024] like Figure 1-2 As shown, in this embodiment, the upper end of the splash shield 10 is connected to an exhaust pipe 11, and the lower left end of the ladle 3 is connected to a drain valve 16.

[0025] When scrap steel is added to the ladle 3, since the splash shield 10 is covered on the top of the ladle 3, the splash shield 10 will block the splashed molten steel, which is beneficial to prevent the molten steel from splashing out of the ladle 3 and injuring people, thereby reducing safety accidents and making the operation process safer. The hot air generated by the high temperature is discharged through the exhaust pipe 11, and then an appropriate amount of cut heads are added according to the temperature of the molten steel to cool it down. The temperature is measured 3 minutes after adding, that is, the temperature of the molten steel is monitored in combination with the temperature detector 15, which is beneficial to ensure the precise regulation of the molten steel temperature. Therefore, it is determined whether to continue adding according to the temperature conditions until the temperature meets the process requirements. This ladle and cut head molten steel cooling device is simple to make and has a wide range of applicability. It does not require additional investment, realizes rapid regulation of the molten steel temperature and direct utilization of scrap steel, and finally the drain valve 16 is used to discharge the molten steel.

[0026] like Figure 1-2As shown, in this embodiment, a hydraulic cylinder 6 is fixed to the upper end of the support plate 5, and a material baffle plate 7 is connected to the power end of the hydraulic cylinder 6. The material baffle plate 7 slides to the left and penetrates into the receiving bucket 2. A temperature detector 15 is fixed to the outside of the ladle 3, and the probe of the temperature detector 15 penetrates into the ladle 3.

[0027] When the addition of scrap steel needs to be stopped, the hydraulic cylinder 6 contracts and drives the baffle plate 7 to be inserted into the receiving bucket 2 again until the receiving bucket 2 continues to be layered up and down. At this time, the baffle plate 7 prevents the scrap steel from continuing to fall out of the receiving bucket 2, preventing the scrap steel in the receiving bucket 2 from continuing to enter the discharge shaft tube 8 and the discharge inclined tube 9, thereby stopping the addition of scrap steel into the ladle 3 and avoiding excessive feeding.

[0028] like Figure 1 , 3 As shown, in this embodiment, the unloading shaft tube 8 is provided with a rotation reset component, and the rotation reset component includes a forward and reverse motor 12, a main gear 13 and a sub gear 14. The forward and reverse motor 12 is fixed to the lower end of the support plate 5, and the main gear 13 is connected to the power end of the forward and reverse motor 12. The sub gear 14 is fixedly sleeved on the outer periphery of the unloading shaft tube 8, and the main gear 13 is meshed with the sub gear 14.

[0029] When it is necessary to maintain the inside of the ladle 3, the main gear 13, the sub-gear 14 and the unloading shaft tube 8 are driven to rotate through the operation of the forward and reverse motor 12, and the unloading shaft tube 8 will drive the unloading inclined tube 9 and the splash cover 10 to move away from the top of the ladle 3, and then it is convenient to maintain the inside of the ladle 3.

[0030] All technical features in this embodiment can be freely combined according to actual needs.

[0031] The above embodiments are preferred implementation schemes of the present invention. In addition, other implementation schemes are also included. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A device for comprehensive utilization of excess heat of molten steel, comprising a frame (1) and a ladle (3), wherein the ladle (3) is fixed to the bottom end of the frame (1), and is characterized in that: A support plate (5) is fixed to the inner side wall of the frame (1), a loading bucket (2) is fixed to the left end of the support plate (5), a hydraulic cylinder (6) is fixed to the upper end of the support plate (5), a material blocking plate (7) is connected to the power end of the hydraulic cylinder (6), and the material blocking plate (7) slides to the left and penetrates into the loading bucket (2); A material discharge shaft tube (8) is rotatably connected and communicated with the lower portion of the loading bucket (2); the lower end of the material discharge shaft tube (8) is communicated with a material discharge inclined tube (9); the lower end of the material discharge inclined tube (9) is communicated with a splash guard (10); the splash guard (10) covers the upper end of the ladle (3); and a rotation reset component is provided outside the material discharge shaft tube (8).

2. The device for comprehensive utilization of excess heat of molten steel as claimed in claim 1, characterized in that: The material blocking plate (7) is inclined.

3. The device for comprehensive utilization of excess heat of molten steel as claimed in claim 1, characterized in that: The rotary reset assembly comprises a forward and reverse motor (12), a main gear (13) and a sub-gear (14); the forward and reverse motor (12) is fixed to the lower end of the support plate (5); the main gear (13) is connected to the power end of the forward and reverse motor (12); the sub-gear (14) is fixedly sleeved on the outer periphery of the unloading shaft tube (8); and the main gear (13) is meshed with the sub-gear (14).

4. The device for comprehensive utilization of excess heat of molten steel as claimed in claim 1, characterized in that: The upper end of the splash shield (10) is connected to an exhaust pipe (11).

5. The device for comprehensive utilization of excess heat of molten steel as claimed in claim 1, characterized in that: The lower left end of the ladle (3) is connected to a drain valve (16).

6. The device for comprehensive utilization of excess heat of molten steel as claimed in claim 1, characterized in that: A temperature detector (15) is fixed outside the ladle (3), and a probe of the temperature detector (15) penetrates into the ladle (3).

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