Three-way sorting mechanism for medium frequency furnace

Abstract

This utility model discloses a three-stage separation mechanism for a medium-frequency furnace, including a furnace body, a liquid addition tank at the top of the furnace body, a first stirring assembly inside the liquid addition tank, and a liquid outlet at the bottom of the liquid addition tank. The furnace body is divided into three equal reaction chambers, arranged clockwise by a first partition, a second partition, and a third partition. A spiral heating ring assembly is provided outside the three reaction chambers. The first, second, and third partitions are connected and sealed to each other. Filter screen boxes are provided on the top of the side walls of the second and third partitions. A second stirring assembly is also provided in each reaction chamber. A discharge filtration mechanism is connected to the bottom of each reaction chamber. One end of the discharge filtration mechanism is connected to the metal receiving port of the furnace body. A liquid collection port is provided at the bottom of the furnace body, and a filter seat is provided inside the liquid collection port. A fine filtration mechanism is provided inside the filter seat. Its advantages are that it is suitable for metal reaction operations of different melting points, achieves precise separation through three-stage zoned reaction, and simultaneously completes waste residue filtration and waste liquid recovery.

Description

Technical Field

[0001] This utility model belongs to the technical field of medium-frequency induction heating equipment, and more specifically, it relates to a three-stage separation mechanism for medium-frequency furnaces. Background Technology

[0002] Currently, medium-frequency furnaces, with their advantages of "high-frequency induction heating, rapid heating rate (up to 100℃ / min), and controllable temperature," have become core equipment in metal smelting and recycling. However, existing medium-frequency furnaces have significant technical shortcomings in the field of multi-metal mixture sorting, making it difficult to meet the industrial demands for "efficient sorting, resource closed-loop management, and environmental compliance." Existing medium-frequency furnaces mostly adopt a single reaction chamber design, requiring multi-metal mixtures to be smelted in one go, which has the following problems: poor sorting accuracy: different metals have significantly different melting points, such as aluminum melting point 660℃, copper melting point 1083℃, and iron melting point 1538℃. Single-chamber heating can only melt high-melting-point metals, while low-melting-point metals are prone to excessive oxidation or forming alloys with high-melting-point metals, which makes subsequent separation much more difficult. During the smelting process, the waste residue is mixed with different molten metals and forms a "metal-waste residue" composite after cooling. This requires additional crushing and pickling treatment, which not only increases the process cost but may also lead to secondary metal loss. For materials containing multiple precious metals, single-cavity smelting can easily cause precious metals to be lost with the waste residue, with a recovery rate of less than 85%, and it is impossible to achieve graded collection of different metals.

[0003] Existing methods for filtering waste slag from medium-frequency furnaces largely rely on manual screening after smelting, which has the following drawbacks: Waste residue is suspended or settled in molten metal. If it is not filtered in real time, it is easy to enter the subsequent process with the molten metal. After cooling, it forms hard and brittle metal slag, and the metal loss rate exceeds 5% when crushing. Simple grid filtration is not enough to separate fine waste residue particles, resulting in insufficient purity of molten metal that requires secondary refining. Multi-layer filtration and waste liquid recycling are not possible. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a three-part separation mechanism for medium-frequency furnaces to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a three-stage separation mechanism for a medium-frequency furnace, including a furnace body, a cover plate at the top of the furnace body, a liquid addition tank at the center of the cover plate, a first stirring assembly inside the liquid addition tank, and a liquid outlet at the bottom of the liquid addition tank. The furnace body is divided into three equal reaction chambers, arranged clockwise by a first partition, a second partition, and a third partition. A spiral heating ring assembly is provided outside the three reaction chambers for circumferential electric heating. The first, second, and third partitions are interconnected and sealed, and their heights decrease sequentially. A filter screen box is provided on the top of the side wall of the second and third partitions. A second stirring assembly is also provided in each reaction chamber. A discharge filtration mechanism is connected to the bottom of each reaction chamber. One end of the discharge filtration mechanism is connected to the metal receiving port of the furnace body. A liquid collection port is provided at the bottom of the furnace body. A filter seat is provided inside the liquid collection port. A fine filtration mechanism is provided inside the filter seat. A fine filter screen is connected to the top of the fine filtration mechanism. The fine filter screen is located at the bottom of the reaction chamber between the first and third partitions.

[0006] As an optional solution of this utility model, the first stirring assembly includes a second driver installed on the top of the liquid addition tank. The driving end of the second driver is connected to the stirring rod through a coupling. The stirring rod is provided with multiple blades. A liquid inlet pipe is connected to one side of the liquid addition tank, through which the reaction liquid that reacts with the metal is added.

[0007] As an optional solution of this utility model, multiple temperature detectors are installed on the outside of the furnace body, and the multiple temperature detectors are used to detect the temperature inside the reaction chamber.

[0008] As an optional solution of this utility model, the second stirring assembly includes a stirring frame, the top of which is connected to a first driver. The first driver is installed on the top of the cover plate and drives the stirring frame to rotate independently for mixing. A feed inlet is provided on one side of the furnace body, which is connected to the reaction chamber between the first partition and the second partition.

[0009] As an optional solution of this utility model, the discharge filtration mechanism includes a metal collection bin, the top of which is connected to the reaction chamber. A positioning frame is provided inside the metal collection bin, and a guide plate is installed on the positioning frame. A guide pipe is connected to one side of the metal collection bin, and one end of the guide pipe is connected to the metal collection port on the furnace body. Metal is collected through the metal collection port. A second drain port is provided at the bottom of the metal collection bin, and the bottom of the second drain port is connected to a drain chamber. The drain chamber is located at the bottom of the furnace body, and a first drain port is provided at the bottom of the drain chamber. The coarsely filtered waste liquid is discharged through the first drain port.

[0010] As an optional solution of this utility model, the fine filtration mechanism includes a fine filter seat, which is installed inside the fine filter port. The fine filter seat is provided with a fine filter flow channel and a diversion pipe on the fine filter seat. The diversion pipe is provided with multiple diversion holes. The top of the fine filter seat is connected to a fine filter chamber. The diversion pipe is located inside the fine filter chamber. The top of the fine filter chamber is connected to the reaction chamber through the fine filter port for filtering the metal waste liquid in the final stage.

[0011] This utility model provides a three-stage separation mechanism for a medium-frequency furnace, which has the following beneficial effects: The raw materials and reaction solution are thoroughly stirred and mixed by the first and second actuators to ensure the stability of the raw material reaction. The three equal chambers are set up and the different temperatures are adjusted to separate aluminum, copper and iron in the raw materials one by one, and they are filtered independently and collected in stages.

[0012] Waste residue is filtered by a filter screen box, while metal precipitates are collected by a metal collection chamber and discharged through a feed pipe. The waste liquid carried by the filter screen is discharged from the second drain port. After three stages of reaction filtration, the final solution is guided from the reaction chamber through a fine filter screen to a fine filter chamber, and then guided through a diversion pipe to a fine filter port for collection. Waste liquid that is not filtered by the fine filter screen is discharged from the metal collection chamber. The liquid is separated independently to avoid cross-contamination of metals and improve the metal recovery rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the internal structure of this utility model; Figure 3 This is a front view of the present invention; Figure 4 This is a cross-sectional view (AA) of the present invention: Figure 5 This is a DD cross-sectional view of the present invention: Figure 6 This is a partial enlarged view of the present invention.

[0014] In the diagram: 1. Furnace body; 101. Feed inlet; 102. Spiral heating ring assembly; 103. First partition; 104. Second partition; 105. Third partition; 2. Temperature detector; 3. Cover plate; 4. First actuator; 401. Stirring rack; 5. Liquid addition tank; 501. Second actuator; 502. Liquid inlet pipe; 503. Stirring rod; 504. Liquid outlet; 6. Filter screen box; 7. Drainage chamber; 701. First drain outlet; 8. Fine filtration chamber; 801. Diverter pipe; 802. Filter base; 803. Fine filtration channel; 804. Fine filtration port; 805. Fine filter screen; 9. Metal collection chamber; 901. Guide plate; 902. Positioning frame; 903. Second drain outlet; 10. Guide pipe; 11. Metal receiving port. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0016] Please see Figures 1 to 6 This utility model provides a technical solution: a three-stage separation mechanism for a medium-frequency furnace, including a furnace body 1, a cover plate 3 on the top of the furnace body 1, a liquid addition tank 5 in the center of the cover plate 3, a first stirring assembly inside the liquid addition tank 5, the first stirring assembly including a second driver 501 installed on the top of the liquid addition tank 5, the driving end of the second driver 501 being connected to a stirring rod 503 via a coupling, the stirring rod 503 having multiple blades for continuous mixing and stirring, and an inlet pipe 502 connected to one side of the liquid addition tank 5, through which liquid is introduced... The liquid pipe 502 is used to add the reaction liquid that reacts with the metal. The bottom of the liquid tank 5 is provided with a liquid outlet 504. The furnace body 1 is divided into three equal reaction chambers, which are arranged in a clockwise direction through the first partition 103, the second partition 104 and the third partition 105. The three reaction chambers are provided with a spiral heating ring group 102, which provides circumferential electric heating. The maximum temperature can be 1600℃. Multiple temperature detectors 2 are installed on the outside of the furnace body 1 to detect the temperature inside the reaction chamber.

[0017] The first partition 103, the second partition 104 and the third partition 105 are connected and sealed to each other, and their heights decrease sequentially. The top of the side wall of the second partition 104 and the third partition 105 are provided with waste residue mesh boxes 6, which filter and recycle the waste residue generated after the metal reaction. Each reaction chamber is also provided with a second stirring component, which fully mixes the metal and the reaction liquid.

[0018] The second stirring assembly includes a stirring frame 401. The top of the stirring frame 401 is connected to a first driver 4, which is installed on the top of the cover plate 3. The first driver 4 drives the stirring frame 401 to rotate independently for mixing. A feed inlet 101 is provided on one side of the furnace body 1. The feed inlet 101 connects to the reaction chamber between the first partition 103 and the second partition 104. The bottom of the reaction chamber is connected to a discharge filter mechanism. One end of the discharge filter mechanism is connected to the metal receiving port 11 of the furnace body 1, through which the reacted metal is recovered and stored.

[0019] The discharge filtration mechanism includes a metal collection bin 9, the top of which is connected to the reaction chamber. A positioning frame 902 is installed inside the metal collection bin, and a guide plate 901 is installed on the positioning frame 902. A guide pipe 10 is connected to one side of the metal collection bin, and one end of the guide pipe 10 is connected to the metal collection port 11 on the furnace body 1. Metal is collected through the metal collection port 11. A second drain port 903 is provided at the bottom of the metal collection bin, and the bottom of the second drain port 903 is connected to a drain bin 7. The drain bin 7 is located at the bottom of the furnace body 1, and a first drain port 701 is provided at the bottom of the drain bin 7. The coarsely filtered waste liquid is discharged through the first drain port 701.

[0020] A liquid collection port is provided at the bottom of the furnace body 1 for collecting and recycling the filtered waste liquid. A filter seat 802 is provided inside the liquid collection port, and a fine filtration mechanism is provided inside the filter seat 802. The top of the fine filtration mechanism is connected to a fine filter screen 805. The fine filter screen 805 is located at the bottom of the reaction chamber between the first partition 103 and the third partition 105. The fine filtration mechanism includes a fine filter seat, which is installed in a fine filter port 804. A fine filter flow channel 803 is provided inside the fine filter seat. A diversion pipe 801 is provided on the fine filter seat, and multiple diversion holes are provided on the diversion pipe 801. A fine filter chamber 8 is connected to the top of the fine filter seat. The diversion pipe 801 is located inside the fine filter chamber 8. The top of the fine filter chamber 8 is connected to the reaction chamber through the fine filter port 804 for filtering the metal waste liquid in the final stage.

[0021] The specific usage and function of this embodiment: Before operation, raw materials are added through the feed inlet 101. The main components are: 15% aluminum, 25% copper, 10% iron, and 50% waste residue. A reaction solution, composed of a 10% concentration of slag-forming agent Na2CO3 solution and a reducing agent, is added to the liquid addition tank 5. After addition, the spiral heating ring assembly 102 starts heating, and simultaneously, the first driver 4 and the second driver 501 are activated to fully mix the raw materials and reaction solution. After heating to 750°C, the aluminum melts and precipitates. The floating waste residue is collected by the filter screen box, and the aluminum precipitate is discharged through the metal collection chamber 9 and the guide pipe 10. The carried waste liquid is discharged from the second drain port 903, and the remaining solution is diverted to the intermediate reaction chamber. After heating to 1050℃, copper melts and precipitates. The waste residue is collected by the filter screen box. The precipitate passes through the metal collection chamber 9 and is discharged through the feed pipe 10. The waste liquid it carries is discharged from the second drain port 903. Finally, the remaining solution is guided to the final reaction chamber, where it is heated to 1450℃. After iron melts and precipitates, the precipitate passes through the metal collection chamber 9 and is discharged through the feed pipe 10. The waste liquid it carries is discharged from the second drain port 903. Finally, it is discharged from the first drain port 701 of the drain chamber 7. After the final stage of reaction chamber solution processing, it is filtered through the fine filter screen 805 to the fine filter chamber 8 and guided through the diversion pipe 801 to the fine filter port 804 for collection. The waste liquid that is not filtered by the fine filter screen 805 is discharged from the metal collection chamber 9 and separated independently.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A three-part separation mechanism for an intermediate frequency furnace, characterized in that: The furnace includes a furnace body (1), a cover plate (3) on the top of the furnace body (1), a liquid filling tank (5) in the center of the cover plate (3), a first stirring assembly inside the liquid filling tank (5), and a liquid outlet (504) at the bottom of the liquid filling tank (5). The furnace body (1) is divided into three equal reaction chambers, which are arranged in a clockwise direction by a first partition (103), a second partition (104), and a third partition (105). A spiral heating ring assembly (102) is provided outside the three reaction chambers, which provides circumferential electric heating. The first partition (103), the second partition (104), and the third partition (105) are arranged in a clockwise direction. 5) They are connected and sealed, and their heights decrease sequentially. The top of the side walls of the second partition (104) and the third partition (105) are provided with filter screen boxes (6). Each reaction chamber is also provided with a second stirring assembly. The bottom of each reaction chamber is connected to a discharge filter mechanism. One end of the discharge filter mechanism is connected to the metal receiving port (11) of the furnace body (1). The bottom of the furnace body (1) is provided with a liquid collection port. A filter seat (802) is provided in the liquid collection port. A fine filter mechanism is provided in the filter seat (802). The top of the fine filter mechanism is connected to a fine filter screen (805). The fine filter screen (805) is located at the bottom of the reaction chamber between the first partition (103) and the third partition (105).

2. The medium frequency furnace three-sorting mechanism according to claim 1, characterized in that: The first stirring assembly includes a second driver (501) installed on the top of the liquid addition tank (5). The driving end of the second driver (501) is connected to the stirring rod (503) via a coupling. The stirring rod (503) is provided with multiple blades. A liquid inlet pipe (502) is connected to one side of the liquid addition tank (5). The reaction liquid that reacts with the metal is added through the liquid inlet pipe (502).

3. The medium frequency furnace three-way sorting mechanism according to claim 2, characterized in that: Multiple temperature detectors (2) are installed on the outside of the furnace body (1), and the multiple temperature detectors (2) are used to detect the temperature inside the reaction chamber.

4. The three-stage separation mechanism for the medium-frequency furnace according to claim 1, characterized in that: The second stirring assembly includes a stirring rack (401), the top of which is connected to a first driver (4). The first driver (4) is installed on the top of the cover plate (3). The stirring rack (401) is rotated by the first driver (4) and mixed independently. A feed inlet (101) is provided on one side of the furnace body (1). The feed inlet (101) is connected to the reaction chamber between the first partition (103) and the second partition (104).

5. The three-stage separation mechanism for the medium-frequency furnace according to claim 4, characterized in that: The discharge filtration mechanism includes a metal collection bin (9), the top of which is connected to the reaction chamber. A positioning frame (902) is installed inside the metal collection bin, and a guide plate (901) is installed on the positioning frame (902). A guide pipe (10) is connected to one side of the metal collection bin, and one end of the guide pipe (10) is connected to the metal collection port (11) on the furnace body (1). Metal is collected through the metal collection port (11). A second drain port (903) is provided at the bottom of the metal collection bin. The bottom of the second drain port (903) is connected to the drain bin (7). The drain bin (7) is located at the bottom of the furnace body (1). A first drain port (701) is provided at the bottom of the drain bin (7). The coarsely filtered waste liquid is discharged through the first drain port (701).

6. The three-stage separation mechanism for an intermediate frequency furnace according to claim 1, characterized in that: The fine filtration mechanism includes a fine filter seat, which is installed inside the fine filter port (804). The fine filter seat is provided with a fine filter channel (803). The fine filter seat is provided with a diversion pipe (801), which is provided with multiple diversion holes. The top of the fine filter seat is connected to a fine filter chamber (8). The diversion pipe (801) is located inside the fine filter chamber (8). The top of the fine filter chamber (8) is connected to the reaction chamber through the fine filter port (804) for filtering the metal waste liquid in the final stage.

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