A cooling and dust removal device for smelting crucibles

Abstract

The utility model discloses a cooling dust collector of smelting crucible, first dust absorption pipe rotation is arranged below the support platform, and the fixed end of automatic telescopic link is swingingly connected below the support platform, and the telescopic end of automatic telescopic link is swingingly connected in the lateral wall of first dust absorption pipe, and the other end of first dust absorption pipe is fixedly connected with the bend pipe of "L" type, and the one end of bend pipe is rotatably connected with the connecting blind pipe, and the lateral wall of connecting blind pipe is fixedly connected with second dust absorption pipe, and the air blowing pipe is movably inserted in second dust absorption pipe, and one end of air blowing pipe is movably penetrated through the lateral wall of connecting blind pipe, and the other end of air blowing pipe is provided with air outlet, and the water jet pipe is fixedly inserted in air blowing pipe, and one end of water jet pipe is penetrated through air blowing pipe. Advantageous effects: the utility model discloses simple structure, easy to realize, low manufacturing cost, long service life, simple maintenance, suitable for using under high temperature environment, has two functions of cooling crucible and dust removal, 10 minutes can reach cooling effect, realizes the recovery dust at the same time of accelerating cooling, and protects the working environment.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology for smelting crucibles, and in particular to a cooling and dust removal device for smelting crucibles. Background Technology

[0002] Neodymium iron boron (NdFeB) is an important magnetic material with excellent magnetic properties, earning it the nickname "King of Magnets." The preparation method for NdFeB involves first adding raw materials to a crucible in a smelting furnace for smelting. The smelted raw materials are then poured from the crucible nozzle into the upper tundish of an intermediate ladle device, flowing to the lower tundish. From there, the liquid is poured through the outlet of the lower tundish onto rotating cooling copper rollers. After crushing and cooling, the material is then powdered, molded, and sintered to obtain the NdFeB magnetic material. After each smelting cycle, the smelting crucible needs to be cooled and cleaned. Specifically, after the current smelting operation, the temperature inside the crucible is 800-900℃, and a large amount of slag adheres to the crucible walls, requiring cooling for slag removal. To improve production efficiency, axial flow fans are typically placed on a platform above the smelting crucible, and forced air cooling is applied towards the open end of the crucible. This process can cool the slag inside the crucible until it turns black (i.e., the temperature drops to 200-300℃) in 20-40 minutes. However, this cooling method has the following problems: dust and fine slag inside the crucible are blown up and fly out from the open end, creating a large amount of dust that pollutes the working environment and results in slag loss. Among them, the patent application with application number 202510912971.1, entitled "A Dust Removal Structure for the Slag Removal Process of Neodymium Iron Boron Sheet Crucibles," discloses that the conical structure of the dust suction pipe is provided with two symmetrically arranged spray units, and the tubular structure of the dust suction pipe is provided with a mixing unit for mixing dust and water mist. The invention uses a rotatable water pipe to drive the circumferentially distributed spray pipes to rotate synchronously. Cooling water mist is continuously sprayed into the dust suction pipe through two atomizing nozzles on the spray pipes, achieving active cooling and extending the equipment life. The invention uses a rotating cylinder to drive the vortex-shaped push plate to rotate. The convex arc surface of the push plate pushes the dust radially outward along the dust suction pipe, forcing the dust to quickly approach the spray area, significantly accelerating the mixing efficiency of dust and water mist, improving the cooling effect, and increasing the dust removal efficiency.

[0003] However, the above-mentioned patent has the following problems: 1. The dust removal structure only has the function of absorbing the dust discharged from the open end of the smelting crucible, and does not have the function of cooling the inside of the smelting crucible; 2. The dust removal structure in the above-mentioned patent needs to be set above the smelting crucible. High-temperature baking will cause changes in the fit clearance of the delicate parts and material aging, and dust will also enter the rotating parts between the water pipe and the support frame, as well as the rotating parts between the rotating cylinder and the inner support of the dust suction pipe, resulting in severe wear of the rotating parts and thus reducing the service life of the above-mentioned dust removal structure; 3. The above-mentioned dust removal structure has a complex structure and high manufacturing cost; it has many easily worn parts, which makes maintenance difficult and costly, and is not suitable for use in high-temperature environments. Utility Model Content

[0004] The main purpose of this utility model is to provide a cooling and dust removal device for smelting crucibles, which is suitable for use in high-temperature environments. It has both cooling and dust removal functions, and can achieve the cooling effect in 10 minutes. While accelerating cooling, it also realizes dust recovery and protects the working environment.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a cooling and dust removal device for a smelting crucible, comprising a first suction pipe, an automatic telescopic rod, a connecting blind pipe, a second suction pipe, an air blowing pipe, and a water spray pipe; the first suction pipe is rotatably disposed below a support platform, the fixed end of the automatic telescopic rod is movably hinged to the lower part of the support platform, and the telescopic end of the automatic telescopic rod is movably hinged to the side wall of the first suction pipe; one end of the first suction pipe is connected to a dust collector via a flexible hose, and the other end of the first suction pipe is fixedly connected to an "L"-shaped bend, with the bend located away from the suction pipe. One end is rotatably connected to the connecting blind tube, and the second suction tube is fixedly connected to the side wall of the connecting blind tube; the blowing tube is movably inserted into the second suction tube, one end of the blowing tube movably penetrates the side wall of the connecting blind tube and has an air inlet connected to the air outlet of the air compressor, the other end of the blowing tube has an air outlet, the water spray tube is fixedly inserted into the blowing tube, one end of the water spray tube penetrates the blowing tube and is connected to the air outlet of the air compressor and the water outlet of the water pump respectively through a three-way connector via a flexible hose, and the other end of the water spray tube is provided with a water spray nozzle.

[0006] Furthermore, a gear ring is fixedly fitted on the outer wall of the end of the connecting blind pipe near the bend, and a first drive motor is fixedly installed on the bend. The output end of the first drive motor is coaxially fixed with a first gear that meshes with the gear ring for transmission.

[0007] Furthermore, a rack is fixed to the outer wall of the air blowing pipe, and a second drive motor is fixed to the outer wall of the connecting blind pipe. A second gear that meshes with the rack is coaxially fixed to the output end of the second drive motor.

[0008] Furthermore, a conical dust hood is fixedly installed at the end of the second suction pipe away from the connecting blind pipe, and the bottom diameter of the dust hood is larger than the opening diameter of the crucible.

[0009] Furthermore, an air blower head is fixedly connected to the air outlet of the air blowing pipe inside the dust collection hood. Several air outlet holes are opened on the side of the air blower head away from the air blowing pipe. The other end of the water spray pipe passes through the air blower head. The outer diameter of the air blower head is smaller than the inner diameter of the crucible.

[0010] Furthermore, several air outlet holes are also provided on the side wall of the air blowing head.

[0011] This utility model has the following beneficial effects: 1. This utility model has a simple structure, is easy to implement, and has low manufacturing cost. Only the dust suction hood, air blowing pipe, air blowing head, and water spray pipe are close to the high-temperature area, while the rest of the transmission structure is far away from the high-temperature area. Therefore, damage to the transmission components is avoided, resulting in a long service life, simple maintenance, and suitability for use in high-temperature environments. 2. In this utility model, compressed air and water are introduced into the water spray pipe to form a water mist that is sprayed into the crucible, achieving rapid cooling of the crucible. Compressed air is blown out through the air outlet of the air blowing head to cool the crucible. The dust suction pipe sucks up and collects the dust discharged from the open end of the crucible. Therefore, this utility model has both crucible cooling and dust removal functions. The cooling effect can be achieved in 10 minutes. While accelerating cooling, it also realizes dust recovery and protects the working environment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of a cooling and dust removal device for a smelting crucible according to the present invention.

[0014] Figure 2 for Figure 1 A cross-sectional view of section AA.

[0015] Figure 3 for Figure 2 A bottom view.

[0016] Figure 4 for Figure 1 A magnified view of part B in the diagram.

[0017] Figure 5 This is a schematic diagram illustrating the use of this utility model.

[0018] In the diagram: 1. First suction pipe; 2. Automatic telescopic rod; 3. Connecting blind pipe; 4. Second suction pipe; 5. Air blowing pipe; 6. Water spray pipe; 7. Support platform; 8. Dust collector; 9. Bend pipe; 10. Air compressor; 11. Water pump; 12. Gear ring; 13. First drive motor; 14. First gear; 15. Rack; 16. Second drive motor; 17. Second gear; 18. Suction hood; 19. Air blowing head; 191. Air outlet. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-5 The principles and features of this utility model are described, making the technical means, creative features, and achieved objectives of this utility model easy to understand, and further elaborating on this utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1-4As shown, the technical solution adopted by this utility model is as follows: a cooling and dust removal device for a smelting crucible, comprising a first suction pipe 1, an automatic telescopic rod 2, a connecting blind pipe 3, a second suction pipe 4, an air blowing pipe 5, and a water spray pipe 6; the first suction pipe 1 is rotatably disposed below a support platform 7, the fixed end of the automatic telescopic rod 2 is movably hinged to the lower part of the support platform 7, and the telescopic end of the automatic telescopic rod 2 is movably hinged to the side wall of the first suction pipe 1; one end of the first suction pipe 1 is connected to a dust collector 8 through a flexible hose, and the other end of the first suction pipe 1 is fixedly connected to an "L"-shaped bend 9, with the bend 9 located away from the dust collector. One end of the tube is rotatably connected to a connecting blind tube 3, and a second suction tube 4 is fixedly connected to the side wall of the connecting blind tube 3; an air blowing tube 5 is movably inserted into the second suction tube 4, one end of the air blowing tube 5 movably passes through the side wall of the connecting blind tube 3, and has an air inlet connected to the air outlet of the air compressor 10, and the other end of the air blowing tube 5 has an air outlet, and a water spray tube 6 is fixedly inserted into the air blowing tube 5, one end of the water spray tube 6 passes through the air blowing tube 5, and is connected to the air outlet of the air compressor 10 and the water outlet of the water pump 11 respectively through a three-way connector via a flexible hose, and the other end of the water spray tube 6 is provided with a water spray nozzle.

[0023] A gear ring 12 is fixedly fitted on the outer wall of the end of the connecting blind pipe 3 near the bend 9. A first drive motor 13 is fixedly installed on the bend 9. A first gear 14 that meshes with the gear ring 12 is fixedly fixed to the output end of the first drive motor 13.

[0024] A rack 15 is fixed to the outer wall of the air blowing pipe, and a second drive motor 16 is fixed to the outer wall of the connecting blind pipe 3. A second gear 17 that meshes with the rack 15 is fixed to the output end of the second drive motor 16.

[0025] A conical dust hood 18 is fixedly installed at the end of the second dust suction pipe 4 away from the connecting blind pipe 3. The bottom diameter of the dust suction hood 18 is larger than the open diameter of the crucible. An air blowing head 19 is fixedly connected to the air outlet of the air blowing pipe 5 inside the dust suction hood 18. Several air outlet holes 191 are opened on the side of the air blowing head 19 away from the air blowing pipe 5. The other end of the water spray pipe 6 passes through the air blowing head 19. The outer diameter of the air blowing head 19 is smaller than the inner diameter of the crucible. Several air outlet holes 191 are also opened on the side wall of the air blowing head 19.

[0026] Working principle: like Figure 5As shown, when the sealed furnace cover of the smelting furnace is opened, the automatic telescopic rod 2 extends and pushes the first dust suction pipe 1, causing the first dust suction pipe 1 to rotate 90° from below the support platform 7 to above the smelting furnace and stop. Then, the first drive motor 13 starts rotating forward, driving the connecting blind pipe 3 to rotate 90° and stop. After that, the dust collector 8, air compressor 10, water pump 11, and second drive motor 16 start. The air compressor 10 introduces air at 0.5-0.8MPa into the air blowing pipe 5 and the water spray pipe 6, while the water pump 11 introduces water at a flow rate of 0.5-1.5L / min into the water spray pipe 6. The water forms a water mist at the spray nozzle of the water spray pipe 6 under the push of the compressed air. The second drive motor 16 rotates forward, driving the air blowing pipe 5 and the water spray pipe 6 to rotate 90° and stop. Water pipe 6 descends until the distance between the spray nozzle of water pipe 6 and the bottom of the crucible is 8-12cm. Then, the second drive motor 16 reverses and drives air pipe 5 and water pipe 6 to rise back to their original positions. This process repeats for 8-10 minutes. After that, air pipe 5 and water pipe 6 rise back to their original positions, and the second drive motor 16 stops. At the same time, air compressor 10 and water pump 11 also stop. After a period of time, dust collector 8 stops. At this time, the temperature inside the crucible drops to 200-300℃. After dust collector 8 stops, the first drive motor 13 starts and reverses, driving the connecting blind pipe 3 to rotate 90° in the opposite direction and then stop. Then, the automatic telescopic rod 2 starts and retracts, rotating the first suction pipe 1 90° back to the support platform 7 and stopping.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling and dust removal device for a smelting crucible, characterized in that, It includes a first suction pipe, an automatic telescopic rod, a connecting blind pipe, a second suction pipe, an air blowing pipe, and a water spray pipe; the first suction pipe is rotatably disposed below the support platform, the fixed end of the automatic telescopic rod is movably hinged to the bottom of the support platform, and the telescopic end of the automatic telescopic rod is movably hinged to the side wall of the first suction pipe; one end of the first suction pipe is connected to a dust collector via a flexible hose, and the other end of the first suction pipe is fixedly connected to an "L"-shaped bend, with the connecting blind pipe rotatably connected to the end of the bend away from the suction pipe. The second suction pipe is fixedly connected to the side wall of the blind pipe; the air blowing pipe is movably inserted into the second suction pipe, one end of the air blowing pipe movably penetrates the side wall of the blind pipe and has an air inlet connected to the air outlet of the air compressor, the other end of the air blowing pipe has an air outlet, the water spray pipe is fixedly inserted into the air blowing pipe, one end of the water spray pipe penetrates the air blowing pipe and is connected to the air outlet of the air compressor and the water outlet of the water pump through a three-way connector via a flexible hose, and the other end of the water spray pipe is provided with a water spray nozzle.

2. The cooling and dust removal device for a smelting crucible according to claim 1, characterized in that, A gear ring is fixedly fitted on the outer wall of the end of the connecting blind pipe near the bend. A first drive motor is fixedly installed on the bend. The output end of the first drive motor is coaxially fixed with a first gear that meshes with the gear ring for transmission.

3. The cooling and dust removal device for a smelting crucible according to claim 1, characterized in that, A rack is fixed to the outer wall of the air blowing pipe, and a second drive motor is fixed to the outer wall of the connecting blind pipe. A second gear that meshes with the rack is fixed to the output end of the second drive motor.

4. The cooling and dust removal device for a smelting crucible according to claim 1, characterized in that, A conical dust hood is fixedly installed at the end of the second suction pipe away from the connecting blind pipe, and the bottom diameter of the dust hood is larger than the opening diameter of the crucible.

5. The cooling and dust removal device for a smelting crucible according to claim 4, characterized in that, An air blower head is fixedly connected to the air outlet of the air blower pipe inside the dust collection hood. Several air outlet holes are opened on the side of the air blower head away from the air blower pipe. The other end of the water spray pipe passes through the air blower head. The outer diameter of the air blower head is smaller than the inner diameter of the crucible.

6. The cooling and dust removal device for a smelting crucible according to claim 5, characterized in that, Several air outlet holes are also provided on the side wall of the air blowing head.

Images