Grinding and stirring device for molten steel heat preservation covering agent

Abstract

The molten steel heat preservation covering agent grinding and stirring device comprises a stirring tank assembled at the upper end of a base, a sealing cover is assembled at the top end of the stirring tank, and a feeding hopper is assembled on one side of the top end of the sealing cover; a rotating shaft is assembled in the stirring tank, a stirring shaft is mounted at the bottom end of the rotating shaft, and two fixing cylinders are mounted outside the stirring shaft in a sleeving manner; three cutter grooves are formed in the side wall of each fixing cylinder at equal intervals, and a grinding cutter is inserted into each cutter groove; the grinding cutter and the cutter groove are connected through a clamping structure; according to the molten steel heat preservation covering agent grinding and stirring device, the stirring shaft is arranged in the stirring tank, the fixing cylinder is arranged outside the stirring shaft, the grinding cutter is arranged on the fixing cylinder, and therefore the covering agent is ground and stirred, the grinding cutter and the fixing cylinder are assembled through the clamping mechanism, traditional bolt connection is replaced, and the grinding efficiency is improved. On the premise that the assembling strength is guaranteed, assembling is convenient, and practicability is improved.

Description

Technical Field

[0001] This patent relates to the field of stirring devices, specifically a grinding and stirring device for molten steel heat preservation covering agent. Background Art

[0002] The molten steel heat preservation covering agent is suitable for covering and heat preservation on the surface of molten steel and molten iron. It has good spreading and covering, excellent heat preservation performance, can adjust the slag on the liquid surface, reduce heat loss, prevent heat radiation and secondary oxidation of molten steel, and the temperature drops by 0.5 - 1 degree per minute. The cooling rate is reduced by 20 - 40%, and the temperature is increased by 20 - 40 degrees. When the covering agent is produced, a grinding and stirring device is needed for processing.

[0003] However, there are still some deficiencies in the existing grinding and stirring devices. For example, the grinding knives are easily damaged, and the traditional installation with the stirring shaft is by bolts, which is not convenient for disassembly and assembly and affects the use. Therefore, the existing technology needs to be improved. Utility Model Content

[0004] Aiming at the deficiencies of the existing technology, the purpose of this patent is to provide a grinding and stirring device for molten steel heat preservation covering agent.

[0005] The technical solution adopted by this patent to solve its technical problems is: a grinding and stirring device for molten steel heat preservation covering agent, including a stirring tank assembled at the upper end of a base, a sealing cover assembled at the top of the stirring tank, and a feeding hopper assembled at one side of the top of the sealing cover;

[0006] A rotating shaft is assembled inside the stirring tank, a stirring shaft is installed at the bottom end of the rotating shaft, and two fixed cylinders are sleeved outside the stirring shaft;

[0007] Three tool slots are equidistantly arranged on the side wall of each fixed cylinder, and a grinding knife is inserted into each tool slot;

[0008] The grinding knife and the tool slot are connected by a clamping structure;

[0009] A pipe rack is assembled at the top of the feeding hopper, and a covering agent feeding mechanism is assembled inside the pipe rack.

[0010] Further, the feeding mechanism includes a clamping block installed at the end of the grinding knife and a clamping groove opened inside the tool slot, the clamping block is clamped in the clamping groove, and an elastic member is assembled inside the clamping block.

[0011] Further, inclined convex surfaces are arranged on both sides of the top of the clamping block, and inclined grooves are arranged on both inner walls of the clamping groove 23.

[0012] Further, the covering agent feeding mechanism includes an LF refining tail slag feeding port, a blast furnace slag granule feeding port, a coke powder feeding port, an unexpanded vermiculite feeding port, and a fluorite feeding port.

[0013] Further, a feed pipe is assembled at the bottom end of the feed hopper, and a valve is assembled on the outer wall of the feed pipe.

[0014] Further, a support frame is assembled on the outer wall of the mixing tank, a motor is assembled at the top end of the support frame, and the rotating shaft is connected to the driving end of the motor.

[0015] Further, a discharge pipe is assembled at the lower end of the side wall of the mixing tank.

[0016] The beneficial effects of this patent are as follows:

[0017] A grinding and stirring device for molten steel heat preservation covering agent has a simple structure and is convenient to operate. By arranging a stirring shaft inside the mixing tank and a fixing cylinder outside the stirring shaft, and arranging grinding knives on the fixing cylinder, the covering agent is ground and stirred. The grinding knives and the fixing cylinder are assembled through a clamping mechanism, replacing the traditional bolt connection. On the premise of ensuring the assembly strength, it is convenient for assembly and improves the practicability. Description of the Drawings

[0018] Figure 1 is the structural schematic diagram of this patent.

[0019] Figure 2 is the schematic diagram of the stirring shaft of this patent.

[0020] Figure 3 is the schematic diagram of the feed hopper of this patent.

[0021] Figure 4 is the schematic diagram of the clamping mechanism of this patent.

[0022] Description of the reference numerals: 1. Base, 2. Mixing tank, 3. Feed hopper, 4. Motor, 5. Sealing cover, 6. Support frame, 7. Discharge pipe, 8. Rotating shaft, 9. Stirring shaft, 10. Grinding knife, 11. Tool groove, 12. Fixing cylinder, 13. Feed pipe, 14. Valve, 15. Pipe support, 16. LF refining tail slag feed inlet, 17. Blast furnace slag granule feed inlet, 18. Coke powder feed inlet, 19. Un-expanded vermiculite feed inlet, 20. Fluorite feed inlet, 21. Oblique groove, 22. Block, 23. Card slot, 24. Elastic member, 25. Oblique convex surface. Detailed Description of the Invention

[0023] The following further elaborates this patent in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate this patent and not to limit the scope of this patent. In addition, it should be understood that after reading the content taught by this patent, those skilled in the art can make various changes or modifications to this patent, and these equivalent forms also fall within the scope defined by the appended claims of the application.

[0024] SeeFigure 1 , Figure 2 , Figure 3 and Figure 4 are the schematic structural diagrams of this patent. A molten steel heat preservation covering agent grinding and stirring device includes a stirring tank 2 assembled at the upper end of a base 1. A sealing cover 5 is assembled at the top of the stirring tank 2. A feed hopper 3 is assembled on one side of the top of the sealing cover 5. The covering agent raw materials are filled into the stirring tank 2 through the feed hopper 3;

[0025] A rotating shaft 8 is assembled inside the stirring tank 2. A stirring shaft 9 is installed at the bottom end of the rotating shaft 8. Two fixed cylinders 12 are sleeved outside the stirring shaft 9. The stirring shaft 9 is driven to rotate by the rotating shaft 8;

[0026] Three tool slots 11 are equally spaced on the side wall of each fixed cylinder 12. A grinding knife 10 is inserted into each tool slot 11. The raw materials in the stirring tank 2 are ground and stirred by the grinding knives 10;

[0027] The grinding knife 10 and the tool slot 11 are connected by a clamping structure;

[0028] A pipe rack 15 is assembled at the top of the feed hopper 3. A covering agent feeding mechanism is assembled inside the pipe rack 15.

[0029] The feeding mechanism includes a clamping block 22 installed at the end of the grinding knife 10 and a clamping groove 23 opened inside the tool slot 11. The clamping block 22 is clamped in the clamping groove 23. An elastic member 24 is assembled inside the clamping block 22. When the grinding knife 10 is inserted into the tool slot 11, the clamping block 22 is clamped into the clamping groove 23 to fix it.

[0030] Two inclined convex surfaces 25 are opened on both sides of the top of the clamping block 22. Two inclined grooves 21 are opened on both inner walls of the clamping groove 23. The inclined convex surfaces 25 are matched with the inclined grooves 21 to facilitate the cooperation between the clamping block 22 and the clamping groove 23.

[0031] The covering agent feeding mechanism includes an LF refining tail slag feeding port 16, a blast furnace slag granule feeding port, a coke powder feeding port 17, an unexpanded vermiculite feeding port 18, and a fluorite feeding port 19 to form a covering agent.

[0032] A feed pipe 13 is assembled at the bottom end of the feed hopper 3. A valve 14 is assembled on the outer wall of the feed pipe 13. The flow of the feed pipe 13 is controlled by the valve 14.

[0033] A support frame 6 is assembled on the outer wall of the stirring tank 2. A motor 4 is assembled at the top of the support frame 6. The rotating shaft 8 is connected to the driving end of the motor 4. The rotating shaft 8 is driven to rotate by the motor 4.

[0034] A discharge pipe 7 is assembled at the lower end of the side wall of the stirring tank 2. A valve is arranged on the discharge pipe 7 for discharging materials.

[0035] Working process and principle: During use, first, 35%-50% of LF refining tail slag, 25%-40% of blast furnace slag particles, 5%-10% of coke powder, 8%-15% of unexpanded vermiculite, and 5-10% of fluorite are filled into the feeding hopper 3, and then the valve 14 is opened to fill them into the stirring tank 2. Then, the motor 4 is started to drive the stirring shaft 8 to rotate, and grinding and stirring are carried out through the grinding knives 10.

[0036] For those skilled in the art, it is obvious that this patent is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of this patent, this patent can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of this patent is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in this patent. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0037] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grinding and stirring device for molten steel heat preservation covering agent, comprising a stirring tank (2) assembled at the upper end of a base (1), characterized in that: The top end of the mixing tank (2) is equipped with a sealing cover (5), and one side of the top end of the sealing cover (5) is equipped with a feed hopper (3); A rotating shaft (8) is installed inside the mixing tank (2), a mixing shaft (9) is installed at the bottom end of the rotating shaft (8), and two fixing cylinders (12) are sleeved outside the mixing shaft (9); Three cutter grooves (11) are evenly arranged at equal intervals on the side wall of each fixing cylinder (12), and a grinding cutter (10) is inserted into each cutter groove (11); The grinding cutter (10) and the cutter groove (11) are connected by a clamping structure; A pipe support (15) is installed at the top end of the feed hopper (3), and a covering agent feeding mechanism is installed inside the pipe support (15).

2. The grinding and stirring device for molten steel heat preservation covering agent according to claim 1, characterized in that: The feeding mechanism includes a clamping block (22) installed at the end of the grinding cutter (10) and a clamping groove (23) opened inside the cutter groove (11). The clamping block (22) is clamped in the clamping groove (23), and an elastic member (24) is installed inside the clamping block (22).

3. The grinding and stirring device for molten steel heat preservation covering agent according to claim 2, characterized in that: Oblique convex surfaces (25) are opened on both sides of the top end of the clamping block (22), and oblique grooves (21) are opened on both inner walls of the clamping groove (23).

4. A grinding and stirring device for molten steel heat preservation covering agent according to claim 1, characterized in that: The covering agent feeding mechanism includes an LF refining tail slag feeding port (16), a blast furnace slag granule feeding port (17), a coke powder feeding port (18), an unexpanded vermiculite feeding port (19) and a fluorite feeding port (20).

5. A grinding and stirring device for molten steel heat preservation covering agent according to claim 1, characterized in that: A feed pipe (13) is installed at the bottom end of the feed hopper (3), and a valve (14) is installed on the outer wall of the feed pipe (13).

6. The grinding and stirring device for molten steel heat preservation covering agent according to claim 1, characterized in that: A support frame (6) is installed on the outer wall of the mixing tank (2), a motor (4) is installed at the top end of the support frame (6), and the rotating shaft (8) is connected to the driving end of the motor (4).

7. A grinding and stirring device for molten steel heat preservation covering agent according to claim 1, characterized in that: A discharge pipe (7) is installed at the lower end of the side wall of the mixing tank (2).

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