Stirring device with high utilization rate of auxiliary materials
By designing a high-utility mixing device for crude lead refining, the problems of low utilization rate of auxiliary materials and serious burn loss are solved, and a higher comprehensive utilization rate of auxiliary materials and lower smoke and dust emissions are achieved.
Patent Information
- Application Number
- CN202421542040.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-02
AI Technical Summary
During the existing crude lead refining process, the utilization rate of auxiliary materials is relatively low, and the effect of conventional improvement measures is limited, and the auxiliary materials still have serious burning and damage.
A high-utility agitation device for auxiliary materials is designed, including a bracket, a feed hopper, a reactor and a stirring shaft. By optimizing the structure of the stirring device, the contact efficiency between auxiliary materials and lead liquid is improved, and the burning loss of auxiliary materials is reduced.
It effectively improves the utilization rate of auxiliary materials, reduces smoke and dust emissions, and significantly reduces the burn loss of auxiliary materials during the production process, achieving a higher comprehensive utilization rate of auxiliary materials.
Smart Images
Figure CN222770923U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses a high-utilization-rate stirring device for auxiliary materials, belonging to the technical field of nonferrous metal refining and manufacturing. Background Art
[0002] Crude lead refining is the process of removing impurities and refining the reduced crude lead with high impurities and high slag rate produced by the smelting furnace. This process is generally carried out in a lead pot. When refining crude lead, first melt the crude lead in the lead pot, and then use a mixer to stir the lead liquid. During the stirring process, different types of refining auxiliary materials are added according to the refining progress and the temperature of the lead liquid to remove the corresponding impurities.
[0003] In the conventional crude lead refining process, a stirrer is generally used and placed at the center of the circle on the upper surface of the lead pot for stirring. Due to the high density of the molten lead and the relatively stable stirring vortex generated by this method, it is difficult for the auxiliary materials to sink and they will burn on the surface of the molten lead, resulting in a decrease in utilization. Studies have found that placing the stirrer slightly off the center of the circle, adding a layer of stirring blades or adding a baffle can effectively improve the problem of auxiliary material burning and improve utilization. However, the improvement capacity of the above methods is limited. After calculation, after taking the above improvement measures, the comprehensive utilization rate of auxiliary materials has increased from the conventional 10-20% to 25-30%. Although the improvement is obvious, most of the auxiliary materials are still wasted. Summary of the invention
[0004] The utility model aims to provide a stirring device with high auxiliary material utilization rate, so as to solve the problem that the auxiliary material utilization rate is still low after improvement in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-utilization-rate stirring device for auxiliary materials, characterized in that it comprises a bracket for being placed on the edge of a lead pot to play a supporting role, a feed hopper placed above the bracket, a reactor, and a stirring shaft; an openable cover plate is provided at the upper end of the feed hopper; the feed hopper and the reactor are connected through a feed pipe; an upper clearance hole for making way for the stirring shaft is provided in the middle of the bracket;
[0006] The reactor is a hollow circular column, the inner circle of which is provided with a lower clearance hole for making way for a stirring shaft, the upper and lower bottom surfaces of the circular column are provided with reaction ports, the upper bottom surface of the circular column is also provided with a connection port for matching with the lower end of a feed pipe, the middle part of the stirring shaft passes through the upper clearance hole and the lower clearance hole in sequence from top to bottom, a stirring blade is welded at the lower end of the stirring shaft, and the upper end of the stirring shaft is placed above the bracket.
[0007] The reactor is a circular column composed of two hollow semi-circular cylinders, and the butt end faces of each hollow semi-circular cylinder are sealed by a sealing plate A to form a closed structure.
[0008] One butt-jointed end faces of the two hollow semicircular cylinders are hinged via a hinge, and the other butt-jointed end faces of the two hollow semicircular cylinders are connected via a lock.
[0009] The upper end of the stirring shaft is connected to the motor.
[0010] The lower end of the feed pipe is detachably connected to the connecting port.
[0011] The upper end of the cover plate is connected to the feeding screw.
[0012] There are two feeding hoppers, which are hollow structures with a larger upper part and a smaller lower part. The lower ends of the feeding hoppers are respectively welded to the upper ends of the two feeding pipes.
[0013] Two stirring blades are welded to the lower end of the stirring shaft, and the inclination angle between the blades and the axis of the stirring shaft is 15° to 25°.
[0014] The distance between the bottom of the reactor and the upper part of the blade is 150mm-200mm, and the diameter of the reaction port of the reactor is 25mm-35mm.
[0015] The utility model provides a high-utilization-rate stirring device for auxiliary materials, which solves the problems of large smoke and dust, serious auxiliary material burning and low utilization rate in previous stirring devices, and has the advantages of simple structure, high auxiliary material utilization rate and less smoke and dust in the production process. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 2 This is a partial enlarged view of the reactor of the utility model;
[0018] In the figure: 1. bracket; 2. feed hopper; 3. reactor; 4. stirring shaft; 5. cover plate; 6. feed pipe; 7. stirring blade; 8. connection port; 9. reaction port. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1The utility model provides a high-utilization auxiliary material stirring device: comprising a bracket 1, a feed hopper 2, a reactor 3, and a stirring shaft 4. The left and right ends of the bracket 1 are placed on the edge of the lead pot for support; the upper end of the feed hopper 2 is provided with a cover plate 5 that can be opened and closed; the feed hopper 2 and the reactor 3 are connected through a feed pipe 6 for adding refining auxiliary materials; the lower end of the stirring shaft 4 is welded with a stirring blade 7 for stirring.
[0021] See also Figure 1-2 The utility model provides a high-utilization stirring device for auxiliary materials. The bracket 1 plays a supporting role. The mixer and the feed hopper 2 are directly or indirectly placed on the upper end of the bracket 1, and the strength should meet the requirements. There are two feed hoppers 2, which are hollow structures with a large upper part and a small lower part, and the lower ends are respectively welded to the upper ends of two feed pipes 6. The upper end of the cover plate 5 is connected to the feed screw. The cover plate 5 is opened during feeding, and the cover plate 5 is closed after the feeding is completed. There are two feed pipes 6, which are hollow cylindrical. The upper ends are respectively welded to the lower ends of the two feed hoppers 2, and the lower ends are respectively connected to the two connecting ports 8 of the reactor 3, and a detachable structure is provided. The reactor 3 is composed of two hollow semi-circular cylinders, and the butt end faces of each hollow semi-circular cylinder are closed by a sealing plate A to form a closed structure. One butt end face of the two hollow semi-circular cylinders is hinged by a hinge, and the other butt end faces of the two hollow semi-circular cylinders are connected by a lock. The upper ends of the two hollow semicircular cylinders are respectively provided with connection ports 3, which are connected to the lower end of the feed pipe 6 and are provided with a detachable structure. The upper and lower ends of the two structures are provided with multiple circular reaction ports 9 for contacting with the lead liquid. Two stirring blades 7 are welded to the lower end of the stirring shaft 4, and the inclination angle between the blades 7 and the axis of the stirring shaft is 15° to 25°. The bottom of the reactor 3 is 150mm to 200mm away from the upper part of the blade 7, and the diameter of the reaction port 9 of the reactor 3 is 25mm to 35mm.
[0022] Working principle: The utility model provides a high-utilization stirring device for auxiliary materials. The working principle is described below:
[0023] First, the smelting operation is carried out. After the lead liquid is melted, the upper cover plate 5 of the feed hopper 2 of the stirring device provided by the utility model is closed, and it is hoisted on the lead pot to start stirring. Due to atmospheric pressure, the lead liquid will not enter the reactor 3. Open the cover plate 5 to prepare to put in the auxiliary materials. Since the designed reaction port 3 has a small diameter and the surface tension of the lead liquid is large, a convex liquid surface will be formed at the reaction port 9, and it will not enter the reactor in a short time. At this time, the auxiliary materials gradually enter the reactor 3 from the feed hopper 2 and the feed pipe 6, and are mixed after contacting with the lead liquid and are taken out to the lead liquid in the lead pot. Since the auxiliary materials enter the lead liquid immediately after contacting with the lead liquid, and are almost not in contact with the air for a long time, they are rarely burned and have a high utilization rate.
[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A stirring device with high auxiliary material utilization rate, characterized in that: The invention comprises a support (1) for being placed on the edge of a lead pot to play a supporting role, a feed hopper (2) placed above the support (1), a reactor (3), and a stirring shaft (4); an openable cover plate (5) is provided at the upper end of the feed hopper (2); the feed hopper (2) and the reactor (3) are connected via a feed pipe (6); an upper clearance hole for making way for the stirring shaft (4) is provided in the middle of the support (1); The reactor (3) is a hollow annular column. The inner ring of the annular column has a lower clearance hole for making way for the stirring shaft (4). The upper and lower bottom surfaces of the annular column both have reaction ports (9). The upper bottom surface of the annular column also has a connection port (8) that cooperates with the lower end of the feed pipe (6). The middle part of the stirring shaft (4) passes through the upper clearance hole and the lower clearance hole in sequence from top to bottom. The lower end of the stirring shaft (4) is welded with a stirring blade (7). The upper end of the stirring shaft (4) is placed above the bracket (1).
2. The auxiliary material high utilization stirring device according to claim 1, characterized in that: The reactor (3) is a circular column composed of two hollow semi-circular cylinders, and the butt-jointed end faces of each hollow semi-circular cylinder are sealed by a sealing plate A to form a closed structure.
3. The auxiliary material high utilization stirring device according to claim 2, characterized in that: One butt-jointed end faces of the two hollow semicircular cylinders are hinged via a hinge, and the other butt-jointed end faces of the two hollow semicircular cylinders are connected via a lock.
4. The auxiliary material high utilization stirring device according to claim 1, characterized in that: The upper end of the stirring shaft (4) is connected to the motor.
5. The auxiliary material high utilization stirring device according to claim 1, characterized in that: The lower end of the feed pipe (6) is detachably connected to the connecting port (8).
6. The auxiliary material high utilization stirring device according to claim 1, characterized in that: The upper end of the cover plate (5) is connected to the feed screw.
7. The auxiliary material high utilization stirring device according to claim 1, characterized in that: There are two feed hoppers (2) which are hollow structures with a larger upper portion and a smaller lower portion. The lower ends of the feed hoppers (2) are respectively welded to the upper ends of the two feed pipes (6).
8. The auxiliary material high utilization stirring device according to claim 1, characterized in that: Two stirring blades (7) are welded to the lower end of the stirring shaft, and the inclination angle between the blades and the axis of the stirring shaft is 15° to 25°.
9. The auxiliary material high utilization stirring device according to claim 1, characterized in that: The distance between the bottom of the reactor and the upper part of the blade is 150mm-200mm, and the diameter of the reaction port of the reactor is 25mm-35mm.