A high-efficiency stirring device for non-ferrous metal smelting

Abstract

The utility model discloses a kind of high-efficiency stirring devices for non-ferrous metal smelting, it includes chassis, heat preservation shell, upper frame, stirring bucket and drive mechanism. Stirring bucket inside is equipped with the stirring shaft driven by rotating motor, multiple layers different structures of stirring component are installed on this shaft, including upper layer's paddle one, middle layer's propeller paddle and lower layer's paddle three, to realize efficient, multi-directional mixing stirring, device is equipped with the feeding hopper and discharge pipe with valve, facilitate the addition and discharge of material, heat preservation shell can effectively reduce heat loss, temperature gauge is further installed on its upper frame for real-time monitoring stirring bucket internal temperature.

Description

Technical Field

[0001] This utility model relates to the field of metal metallurgical equipment technology, and in particular to a high-efficiency stirring device for non-ferrous metal smelting. Background Technology

[0002] Non-ferrous metal metallurgy is an engineering and technical field that extracts metals or metal compounds from mineral resources and uses various processing methods to produce metallic materials with certain properties. This process is mainly divided into three categories: pyrometallurgy, hydrometallurgy, and electrometallurgy. Among them, pyrometallurgy, as the dominant process, is widely used in the large-scale production of bulk metals such as copper, nickel, lead, zinc, and tin. Its core is to achieve the separation and purification of metals from impurities by carrying out a series of physicochemical reactions in the metal raw materials through smelting, blowing, and refining processes at high temperatures.

[0003] In the entire metallurgical process, metallurgical reaction equipment is the core equipment that carries out chemical reactions. Its performance directly determines production efficiency and product quality. In order to achieve mass and heat transfer, composition homogenization, promotion of chemical reactions, and effective separation of metal and slag in the melt, forced stirring of the high-temperature melt is a crucial and indispensable link. The quality of stirring is a key factor affecting metal recovery rate, energy consumption, and final product quality.

[0004] Currently, the stirring technologies used in metallurgical industrial production are mainly mechanical stirring and gas stirring. Mechanical stirring devices are usually composed of a drive motor, transmission mechanism, stirring shaft and impeller. The core of its performance lies in the impeller structure. Traditional stirring equipment mostly uses a single type of impeller, which has significant defects. The stirring effect is uneven, and the flow field generated by a single impeller is limited, making it difficult to simultaneously meet the differentiated needs of surface slag breaking, strong circulation in the middle and bottom stirring. Dead zones with uneven composition and temperature are easily formed in the molten pool, resulting in unstable product quality. Utility Model Content

[0005] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a high-efficiency stirring device for non-ferrous metal smelting, which solves the technical problems of uneven component distribution and temperature field in the molten pool and the existence of stirring dead zones caused by the use of a single-structure stirring blade in traditional stirring devices.

[0006] This utility model also provides a high-efficiency stirring device for non-ferrous metal smelting, wherein an insulation shell is fixedly connected to the upper surface of the chassis, an upper frame is fixedly connected to the upper surface of the insulation shell, a stirring tank is fixedly connected to the inner surface of the upper frame, a motor fixing block is fixedly connected to the upper surface of the stirring tank, a rotary motor is fixedly connected to the upper surface of the motor fixing block, a stirring shaft is fixedly connected to the output end of the rotary motor, a blade fixing block 1 is fixedly connected to the upper layer of the outer surface of the stirring shaft, four blades 1 are fixedly installed on one side surface of the blade fixing block, a blade fixing block 2 is fixedly connected to the middle layer of the outer surface of the stirring shaft, a propeller blade is fixedly connected to the outer surface of the blade fixing block 2, and a blade fixing block 3 is fixedly connected to the lower layer of the outer surface of the stirring shaft, four blades 3 are fixedly connected to the outer surface of the blade fixing block 3; It adopts a three-layer combined stirring blade design. The upper blade is responsible for breaking up the slag layer on the liquid surface and forming eddies; the middle propeller blade can generate a strong axial flow, which powerfully circulates the melt from top to bottom, completely eliminating the stratification of components and temperature; the lower blade focuses on sweeping the bottom of the tank to prevent high-density materials from settling and completely eliminating the stirring dead zone.

[0007] Preferably, a thermometer is fixedly installed on the side surface of the upper frame, and the detection end of the thermometer passes through the upper frame and extends into the interior of the mixing tank. The integrated thermometer allows the operator to monitor the temperature inside the mixing tank in real time and intuitively.

[0008] Preferably, the chassis is provided with a discharge hole, the bottom surface of the chassis is fixedly connected to a discharge pipe, the discharge pipe is provided with a discharge valve, and the side surface of the discharge valve is fixedly connected to a discharge handle, which constitutes a safe and controllable discharge system. By operating the discharge handle, the flow rate and opening and closing of the melt can be precisely controlled, reducing oxidation, splashing and heat loss caused by open discharge, and making operation safe and convenient.

[0009] Preferably, a bearing is fixedly connected to the outer surface of the stirring shaft, and the outer surface of the bearing is fixedly connected to the stirring tank to bear radial and axial loads, ensuring the stability and concentricity of the shaft under high-speed rotation and reducing wear.

[0010] Preferably, a feed pipe is fixedly installed on the upper surface of the mixing tank, a feed hopper is fixedly connected to the upper surface of the feed pipe, a feed valve is provided on the feed pipe, and a feed handle is fixedly connected to the side surface of the feed valve. The feed hopper facilitates feeding, and the feed valve and handle allow the operator to add alloys or fluxes as needed and in batches in a closed environment, avoiding metal oxidation and melt splashing caused by open feeding, and improving the working environment.

[0011] Preferably, the bottom surface of the chassis is fixedly connected to four support columns, which facilitates bottom ventilation and heat dissipation, prevents heat accumulation, and at the same time provides operating and maintenance space for bottom components such as the discharge pipe, thereby enhancing the stability and convenience of the equipment.

[0012] Preferably, two lifting lugs are fixedly connected to the upper surface of the upper frame, which facilitates the hoisting, handling and installation of the equipment.

[0013] Beneficial effects: The high-efficiency stirring device for non-ferrous metal smelting in this technical solution adopts a composite stirring shaft design with an upper, middle and lower three-layer structure. The upper layer breaks slag, the middle layer has strong circulation, and the lower layer sweeps the bottom. The synergistic effect completely eliminates the stirring dead zone, significantly improves the uniformity of melt composition and temperature, and achieves a highly efficient stirring effect. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an overall structural diagram of the high-efficiency stirring device for non-ferrous metal smelting according to this utility model. Figure 2 This is a structural diagram of the stirring mechanism of the high-efficiency stirring device for non-ferrous metal smelting according to this utility model; Figure 3 This is a cross-sectional view of the overall structure of the high-efficiency stirring device for non-ferrous metal smelting according to this utility model. Figure 4 This is a structural diagram of the discharge pipe of the high-efficiency stirring device for non-ferrous metal smelting according to this utility model; Figure 5 This is a structural diagram of the feed pipe of the high-efficiency stirring device for non-ferrous metal smelting according to this utility model; Figure 6 This is a detailed enlarged structural diagram (B) of the high-efficiency stirring device for non-ferrous metal smelting according to this utility model.

[0015] Legend: 1. Upper frame; 2. Insulation shell; 3. Chassis; 4. Support column; 5. Feed hopper; 6. Rotary motor; 7. Thermometer; 8. Motor fixing block; 9. Bearing; 10. Stirring shaft; 11. Blade fixing block one; 12. Blade one; 13. Blade fixing block two; 14. Propeller blade; 15. Blade fixing block three; 16. Blade three; 17. Stirring tank; 18. Discharge handle; 19. Discharge pipe; 20. Feed valve; 21. Feed handle; 22. Feed pipe; 23. Discharge hole; 24. Discharge valve; 25. Lifting lug. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-6 This utility model provides a high-efficiency stirring device for non-ferrous metal smelting, comprising a chassis 3, on which four support columns 4 are fixedly installed to stably support the equipment on the ground. A cylindrical heat-insulating shell 2 is fixedly connected to the upper surface of the chassis 3, and the interior of the shell can be filled with heat-insulating material to reduce heat loss during the smelting process. An upper frame 1 is fixedly connected to the upper surface of the heat-insulating shell 2. The upper frame 1 is a rigid structure used to support the core components. A stirring tank 17 is fixedly connected to the inner surface of the upper frame 1 by means of flanges or welding. The stirring tank 17 is the core container for containing molten metal.

[0018] The upper surface of the mixing tank 17 is fixedly connected to a motor fixing block 8, which is used for precise installation and positioning of the drive components. The rotating motor 6 is fixedly mounted on the upper surface of the motor fixing block 8 via its base. The output end of the rotating motor 6 is fixedly connected to the stirring shaft 10 via a coupling, which transmits power to the stirring shaft 10. The stirring shaft 10 is supported and radially positioned by a bearing 9. The outer ring of the bearing 9 is fixedly connected to the top of the mixing tank 17, ensuring the stability and concentricity of the stirring shaft 10 during rotation.

[0019] The stirring shaft 10 adopts a three-layer composite stirring design. In the upper slag-breaking zone, a blade fixing block 11 is fixedly connected to the upper part of the outer surface of the stirring shaft 10. Four blades 12 are radially and evenly distributed on the side surface of the blade fixing block 11. This layer of blades is located in the shallow surface of the melt and is mainly used to break up the oxide slag layer on the surface of the melt, promoting gas exchange. In the middle strong circulation zone, a blade fixing block 23 is fixedly connected to the middle part of the outer surface of the stirring shaft 10. The outer surface of the blade fixing block 213 is fixedly connected to... There is a propeller blade 14, which is the key to generating a strong axial flow. It can forcefully push the upper layer of melt to the bottom of the tank, forming a strong up-and-down circulation and completely eliminating temperature and composition stratification. In the lower bottom sweeping zone, the lower part of the outer surface of the stirring shaft 10 is fixedly connected to the blade fixing block three 15. Four blades three 16 are evenly fixedly connected to the outer surface of the fixing block three 15. This layer of blades is located near the bottom of the tank. Its design angle can effectively scrape up and stir the high-density metal or impurities that have settled at the bottom of the tank, completely eliminating the stirring dead zone.

[0020] A feed pipe 22 is fixedly installed on the upper surface of the mixing tank 17. A funnel-shaped feed hopper 5 is welded to the upper surface of the feed pipe 22 for easy feeding. A feed valve 20 is installed on the feed pipe 22. The feed handle 21 can control the opening and closing of the valve to achieve sealed feeding. A discharge hole 23 is opened on the chassis 3. A discharge pipe 19 is welded to the bottom surface of the discharge hole 23. A discharge valve 24 is installed on the discharge pipe 19. The discharge handle 18 can control the discharge of the melt.

[0021] A thermometer 7 is fixedly installed on the side surface of the upper frame 1, with its probe extending into the mixing tank 17 to monitor the temperature inside the mixing tank 17 in real time. In addition, two lifting lugs 25 are welded to the upper surface of the upper frame 1 to facilitate the hoisting and transportation of the equipment.

[0022] Working principle: During operation, the metal raw material is put into the mixing tank 17 and heated to melt. The rotating motor 6 is started, which drives the stirring shaft 10 and its three layers of blades to rotate synchronously. The upper blade 12 breaks the slag layer, the middle propeller blade 14 forms the main circulation, and the lower blade 16 sweeps up the sediment. The three work together to achieve efficient and uniform stirring of the melt. The temperature is monitored by the thermometer 7. After smelting is completed, the discharge valve 24 is opened to release the uniformly composed metal melt.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-efficiency stirring device for non-ferrous metal smelting, characterized in that, Includes a chassis (3), an insulation shell (2) is fixedly connected to the upper surface of the chassis (3), an upper frame (1) is fixedly connected to the upper surface of the insulation shell (2), a stirring tank (17) is fixedly connected to the inner surface of the upper frame (1), a motor fixing block (8) is fixedly connected to the upper surface of the stirring tank (17), a rotating motor (6) is fixedly connected to the upper surface of the motor fixing block (8), a stirring shaft (10) is fixedly connected to the output end of the rotating motor (6), a blade fixing block one (11) is fixedly connected to the upper layer of the outer surface of the stirring shaft (10), four blades one (12) are fixedly installed on the side surface of the blade fixing block one (11), a blade fixing block two (13) is fixedly connected to the middle layer of the outer surface of the stirring shaft (10), a propeller blade (14) is fixedly connected to the outer surface of the blade fixing block two (13), a blade fixing block three (15) is fixedly connected to the lower layer of the outer surface of the stirring shaft (10), and four blades three (16) are fixedly connected to the outer surface of the blade fixing block three (15).

2. The high-efficiency stirring device for non-ferrous metal smelting according to claim 1, characterized in that, A thermometer (7) is fixedly installed on the side surface of the upper frame (1).

3. The high-efficiency stirring device for non-ferrous metal smelting according to claim 1, characterized in that, The chassis (3) is provided with a discharge hole (23), and a discharge pipe (19) is fixedly connected to the bottom surface of the chassis (3). A discharge valve (24) is provided on the discharge pipe (19), and a discharge handle (18) is fixedly connected to the side surface of the discharge valve (24).

4. The high-efficiency stirring device for non-ferrous metal smelting according to claim 1, characterized in that, The outer surface of the stirring shaft (10) is fixedly connected to a bearing (9), and the outer surface of the bearing (9) is fixedly connected to the stirring tank (17).

5. The high-efficiency stirring device for non-ferrous metal smelting according to claim 1, characterized in that, The mixing tank (17) is fixedly installed with a feed pipe (22), and a feed hopper (5) is fixedly connected to the upper surface of the feed pipe (22). A feed valve (20) is provided on the feed pipe (22), and a feed handle (21) is fixedly connected to the side surface of the feed valve (20).

6. The high-efficiency stirring device for non-ferrous metal smelting according to claim 1, characterized in that, The bottom surface of the chassis (3) is fixedly connected to four support columns (4).

7. The high-efficiency stirring device for non-ferrous metal smelting according to claim 1, characterized in that, The upper frame (1) has two lugs (25) fixedly connected to its upper surface.

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