A device for removing non-metallic inclusions during metal smelting

Abstract

This utility model discloses a non-metallic inclusion removal device in the metal smelting process, relating to the field of metal smelting and processing technology. It includes an upper filter hopper with multiple upper filter holes on its inner bottom surface, a docking seat fixedly connected to its inner bottom surface, a rectangular docking groove at the bottom of the docking seat, a through groove matching the docking groove on the inner bottom surface of the upper filter hopper, and multiple upper filter holes on its inner bottom surface; and a lower filter hopper with a docking column fixedly connected to its inner bottom surface. This utility model ensures that the molten metal inside both the upper and lower filter hoppers remains at a high temperature during filtration and impurity removal, preventing cooling and solidification. This effectively avoids equipment damage and disruption to normal operation caused by cooling and solidification of the molten metal during filtration and impurity removal, greatly improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting and processing technology, and in particular to a device for removing non-metallic inclusions during metal smelting. Background Technology

[0002] The main purpose of metal smelting is to obtain molten metal with a predetermined composition and temperature, while reducing gases and inclusions in the molten metal, thereby providing high-quality raw materials for subsequent casting or processing. Inclusions are common non-metallic particles in metals, and their presence significantly reduces the mechanical properties and service life of the metal. Therefore, removing inclusions during the smelting process is a crucial step in ensuring metal quality. This necessitates the use of filtration devices to remove non-metallic inclusions from the molten metal, as follows.

[0003] A search revealed patent CN216919363U, which discloses a filtering device for metal smelting. The device comprises a filter with a concave cavity at the top and a first filter hole at the bottom. An inner cavity communicating with the first filter hole is located inside the filter, and a second filter hole communicating with the outside of the inner cavity is located at the bottom of the inner cavity. The diameter of the second filter hole is not larger than the diameter of the first filter hole. This invention provides a filtering device for metal smelting that can filter out unmelted metal, inclusions, oxides, and other impurities, reducing product defects, improving product quality, and ensuring a high yield.

[0004] However, the aforementioned filtration device for metal smelting still has the following areas for improvement. For example, when filtering molten metal to remove non-metallic inclusions, the molten metal enters the filter and undergoes natural flow filtration for a period of time before entering the next process. During this process, because the molten metal needs a certain amount of time to filter and flow, the molten metal may cool and solidify, causing it to become fixed and unable to flow, completely clogging and damaging the filter, resulting in equipment damage. Therefore, there is an urgent need for a non-metallic inclusion removal device in the metal smelting process to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model discloses a non-metallic inclusion removal device in the metal smelting process. It is equipped with a heating mechanism, allowing the molten metal to enter the upper filter hopper through a feed hopper during the filtration process to remove inclusions. The molten metal undergoes a first stage of filtration through multiple upper filter holes on the bottom surface of the upper filter hopper, removing larger inclusions. It then flows naturally into the lower filter hopper, where it undergoes a second stage of filtration through multiple lower filter holes on the bottom surface of the lower filter hopper, further removing smaller inclusions. This ensures effective filtration and inclusion removal of the molten metal before proceeding to the next processing step. During this process, two heating wires, combined with the heat reflection from the upper and lower outer shells, continuously heat the upper and lower filter hoppers, ensuring that the molten metal inside remains at a high temperature and does not cool and solidify. This effectively prevents the molten metal from cooling and solidifying during the filtration process, which could damage the equipment and disrupt normal operation. In summary, this invention solves the problems in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model discloses a non-metallic inclusion removal device in the metal smelting process, including an upper filter bucket, the inner bottom surface of which is provided with a plurality of upper filter holes, a docking seat fixedly connected to the inner bottom surface of which is provided with a rectangular docking groove at the bottom of which is provided, a through groove matching the docking groove on the inner bottom surface of which is provided, and a plurality of upper filter holes on the inner bottom surface of which is provided.

[0008] The lower filter bucket has a connecting post fixedly connected to its inner bottom surface. The connecting post passes through a through groove and matches and engages with the connecting groove. A threaded groove is provided on the top of the connecting post. A locking bolt is provided through the top of the connecting seat. The locking bolt is screwed into the threaded groove. The top of the lower filter bucket abuts and abuts against the bottom of the upper filter bucket. Multiple lower filter holes are provided on the inner bottom surface of the lower filter bucket.

[0009] The heating mechanism includes an upper outer shell, a lower outer shell, and resistance heating wires. The upper and lower outer shells are respectively fixedly fitted onto the outside of the upper and lower filter buckets. Two resistance heating wires are provided, and the two resistance heating wires are respectively wound around the outside of the upper and lower filter buckets. The resistance heating wires are connected to a power supply line.

[0010] Furthermore, the top of the upper filter hopper is provided with a feed hopper, and the top opening of the feed hopper is larger than the top opening of the upper filter hopper.

[0011] Furthermore, both the upper and lower filter buckets are made of silicon carbide ceramic material.

[0012] Furthermore, both the mating seat and the mating post are made of silicon nitride ceramic material, and the locking bolt is made of nickel-based high-temperature alloy material.

[0013] Furthermore, the upper and lower outer shells are made of stainless steel.

[0014] Furthermore, the diameter of the upper filter hole is larger than the diameter of the lower filter hole, and the number of the lower filter holes is greater than the number of the upper filter holes.

[0015] Furthermore, a sealing gasket layer is provided at the contact point between the upper filter hopper and the lower filter hopper, and the sealing gasket layer is an aluminum silicate ceramic fiber paper sealing gasket.

[0016] The present invention has the following advantages over the prior art:

[0017] 1. This technical solution incorporates a heating mechanism, which, during the filtration of molten metal to remove inclusions, works in conjunction with the heat reflection from the upper and lower outer shells to continuously heat the upper and lower filter buckets. This ensures that the molten metal inside the upper and lower filter buckets remains at a high temperature, preventing it from cooling and solidifying. This effectively avoids equipment damage and disruption to normal operation caused by the molten metal cooling and solidifying during the filtration and impurity removal process, greatly improving the practicality of the device.

[0018] 2. This technical solution, by setting up a docking seat, a docking column, and locking bolts, allows the upper and lower filter buckets to be loosened after work is completed, and then removed for cleaning and maintenance. During installation, the docking column is passed through the through groove and matched with the docking groove, and then the locking bolt is passed through the top of the docking seat and screwed into the threaded groove at the top of the docking column, thus connecting and locking the upper and lower filter buckets, further improving the practicality of the device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3This is a top view of the structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the lower filter bucket of this utility model.

[0024] Figure 5 This is a schematic diagram of the upper filter hole position structure of this utility model;

[0025] Figure 6 This is a bottom view of the docking seat structure of this utility model.

[0026] In the diagram: 1. Upper filter hopper; 2. Upper filter hole; 3. Connecting seat; 4. Connecting groove; 5. Through groove; 6. Lower filter hopper; 7. Connecting column; 8. Threaded groove; 9. Locking bolt; 10. Lower filter hole; 11. Upper outer shell; 12. Lower outer shell; 13. Resistance heating wire; 14. Feed hopper; 15. Sealing gasket. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "surface", "side", "gap", "peripheral", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Reference Figures 1-6 A non-metallic inclusion removal device in a metal smelting process includes an upper filter hopper 1, a plurality of upper filter holes 2 are provided on the inner bottom surface of the upper filter hopper 1, a docking seat 3 is fixedly connected to the inner bottom surface of the upper filter hopper 1, a rectangular docking groove 4 is provided at the bottom of the docking seat 3, a through groove 5 matching the docking groove 4 is provided on the inner bottom surface of the upper filter hopper 1, and a plurality of upper filter holes 2 are provided on the inner bottom surface of the upper filter hopper 1.

[0030] The lower filter hopper 6 has a connecting post 7 fixedly connected to its inner bottom surface. The connecting post 7 passes through the through groove 5 and matches and engages with the connecting groove 4. The top of the connecting post 7 has a threaded groove 8. The top of the connecting seat 3 has a locking bolt 9 that passes through it and is screwed into the threaded groove 8. The top of the lower filter hopper 6 abuts against the bottom of the upper filter hopper 1. The inner bottom surface of the lower filter hopper 6 has multiple lower filter holes 10. The heating mechanism includes an upper outer shell 11, a lower outer shell 12, and a resistance heating wire 13. The upper outer shell 11 and the lower outer shell 12 are respectively fixedly fitted onto the outside of the upper filter hopper 1 and the lower filter hopper 6. There are two resistance heating wires 13, which are respectively wound around the outside of the upper filter hopper 1 and the lower filter hopper 6. The resistance heating wires 13 are connected to a power supply wire.

[0031] The upper filter hopper 1 is provided with a feed hopper 14 at the top, and the top opening of the feed hopper 14 is larger than the top opening of the upper filter hopper 1; both the upper filter hopper 1 and the lower filter hopper 6 are made of silicon carbide ceramic material; both the docking seat 3 and the docking column 7 are made of silicon nitride ceramic material, and the locking bolt 9 is made of nickel-based high-temperature alloy material; the upper outer shell 11 and the lower outer shell 12 are made of stainless steel material; the diameter of the upper filter hole 2 is larger than the diameter of the lower filter hole 10, and the number of lower filter holes 10 is greater than the number of upper filter holes 2; a sealing gasket 15 is provided at the abutment and tightness of the upper filter hopper 1 and the lower filter hopper 6, and the sealing gasket 15 is an aluminum silicate ceramic fiber paper sealing gasket.

[0032] In the specific implementation process, when filtering molten metal to remove its inclusions, the molten metal can enter the upper filter hopper 1 through the feed hopper 14. It undergoes the first filtration through multiple upper filter holes 2 on the bottom surface of the upper filter hopper 1 to remove larger inclusions. Then, it flows naturally down into the lower filter hopper 6 and undergoes the second filtration through multiple lower filter holes 10 on the bottom surface of the lower filter hopper 6 to further remove smaller inclusions. This ensures the filtration and removal of inclusions from the molten metal. Finally, it enters the next processing step. During this process, the upper filter hopper 1 and the lower filter hopper 6 are continuously heated by the operation of two heating wires, combined with the heat reflection of the upper shell 11 and the lower shell 12. This ensures that the molten metal inside the upper filter hopper 1 and the lower filter hopper 6 can maintain a high temperature and will not cool and solidify. This effectively avoids the molten metal cooling and solidifying during the filtration and impurity removal process, which could damage the equipment and affect normal operation.

[0033] After completing the work, the locking bolt 9 can be loosened, and the upper filter bucket 1 and the lower filter bucket 6 can be removed for cleaning and maintenance. During installation, the connecting column 7 is passed through the through groove 5 and matched with the connecting groove 4. Then, the locking bolt 9 is passed through the top of the connecting seat 3 and screwed into the threaded groove 8 at the top of the connecting column 7. This connects and locks the upper filter bucket 1 and the lower filter bucket 6, effectively ensuring the connection stability between the upper filter bucket 1 and the lower filter bucket 6 and preventing them from loosening and falling off, which would affect the filtration and impurity removal of the molten metal.

[0034] The upper filter hopper 1 is provided with a feed hopper 14 at the top. The top opening of the feed hopper 14 is larger than the top opening of the upper filter hopper 1 in order to facilitate the entry of molten metal into the upper filter hopper 1.

[0035] The upper filter hopper 1 and the lower filter hopper 6 are both made of silicon carbide ceramic material because silicon carbide ceramic material can withstand temperatures up to 1600℃ and has high hardness, good wear resistance, strong chemical stability, and is not easy to react with molten metal.

[0036] The docking seat 3 and docking post 7 are both made of silicon nitride ceramic material because silicon nitride ceramic material has excellent high-temperature mechanical properties and thermal shock resistance, making it suitable as a precision connection component. The locking bolt 9 is made of nickel-based high-temperature alloy material because nickel-based high-temperature alloy material can maintain high strength below 700℃ and has excellent oxidation resistance, thus ensuring its service life and preventing deformation and damage.

[0037] The upper outer shell 11 and the lower outer shell 12 are made of stainless steel, specifically 310S stainless steel. This is because 310S stainless steel contains high nickel and high chromium, can withstand high temperatures up to 1100℃, has excellent oxidation resistance, can protect the internal heating elements, and provides good heat reflection, thus improving thermal efficiency.

[0038] The sealing gasket 15 is provided at the abutting and tight joint of the upper filter hopper 1 and the lower filter hopper 6 in order to improve the sealing performance of the connection between the upper filter hopper 1 and the lower filter hopper 6. The sealing gasket 15 is made of aluminum silicate ceramic fiber paper because aluminum silicate ceramic fiber paper has excellent high temperature resistance, can withstand the high temperature environment of molten metal, and has good sealing performance and stability, making it an ideal choice for sealing high temperature molten metal.

[0039] Understandably, the resistance heating wire 13 can be made of nickel-chromium alloy, which allows it to reach a heating temperature of 1200℃, with good resistance stability and is not prone to aging.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for removing non-metallic inclusions in a metal smelting process, comprising an upper filter hopper (1), characterised in that: The inner bottom surface of the upper filter bucket (1) is provided with multiple upper filter holes (2), and the inner bottom surface of the upper filter bucket (1) is fixedly connected with a docking seat (3). The bottom of the docking seat (3) is provided with a rectangular docking groove (4), and the inner bottom surface of the upper filter bucket (1) is provided with a through groove (5) that matches the docking groove (4). The inner bottom surface of the upper filter bucket (1) is provided with multiple upper filter holes (2). The lower filter bucket (6) has a docking post (7) fixedly connected to its inner bottom surface. The docking post (7) passes through the through groove (5) and matches and engages with the docking groove (4). The top of the docking post (7) is provided with a threaded groove (8). The top of the docking seat (3) is provided with a locking bolt (9). The locking bolt (9) is screwed into the threaded groove (8). The top of the lower filter bucket (6) abuts against the bottom of the upper filter bucket (1). The inner bottom surface of the lower filter bucket (6) is provided with multiple lower filter holes (10). The heating mechanism includes an upper outer shell (11), a lower outer shell (12), and a resistance heating wire (13). The upper outer shell (11) and the lower outer shell (12) are respectively fixedly fitted onto the outside of the upper filter bucket (1) and the lower filter bucket (6). There are two resistance heating wires (13), which are respectively wound around the outside of the upper filter bucket (1) and the lower filter bucket (6). The resistance heating wires (13) are connected to a power supply line.

2. The non-metallic inclusion removal device in the metal smelting process according to claim 1, characterized in that: The top of the upper filter hopper (1) is provided with a feed hopper (14), and the top opening of the feed hopper (14) is larger than the top opening of the upper filter hopper (1).

3. A device for removing non-metallic inclusions from a metal smelting process according to claim 1, characterized in that: Both the upper filter bucket (1) and the lower filter bucket (6) are made of silicon carbide ceramic material.

4. A device for removing non-metallic inclusions from a metal smelting process according to claim 1, characterized in that: The docking seat (3) and the docking post (7) are both made of silicon nitride ceramic material, and the locking bolt (9) is made of nickel-based high-temperature alloy material.

5. A device for removing non-metallic inclusions from a metal smelting process as claimed in claim 1, characterized in that: The upper outer shell (11) and the lower outer shell (12) are made of stainless steel.

6. A device for removing non-metallic inclusions from a metal smelting process as claimed in claim 1, characterized in that: The diameter of the upper filter hole (2) is larger than the diameter of the lower filter hole (10), and the number of the lower filter holes (10) is greater than the number of the upper filter holes (2).

7. A device for removing non-metallic inclusions from a metal smelting process as claimed in claim 1, characterized in that: A sealing gasket layer (15) is provided at the abutting and tight contact point between the upper filter bucket (1) and the lower filter bucket (6), and the sealing gasket layer (15) is an aluminum silicate ceramic fiber paper sealing gasket.

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