Intermediate-frequency induction heating device for waste hard alloy

Abstract

The utility model discloses a waste hard alloy medium frequency induction heating device which comprises a base, a heat insulation sleeve and a top cover, a magnet yoke and an induction coil are installed on the inner side of the heat insulation sleeve, bottom feet are arranged at the bottom of the base, the heat insulation sleeve is installed on the base, a positioning lug is arranged on the outer side wall of the base, a vertically-arranged positioning rod is arranged on the positioning lug, and the top cover is arranged on the top cover. A wall lining is installed on the vibration base, an installation hole is formed in the bottom of the base, a vibration exciter is installed at the bottom of the vibration base, the wall lining is installed above the material collecting cavity, a material blocking plate is installed at the bottom of the wall lining, a plurality of evenly-distributed material holes are formed in the material blocking plate, and an inner cavity of the wall lining and the material collecting cavity are communicated through the material holes. A downward inclined discharging hole is formed in the side wall of the bottom of the material collecting cavity; according to the medium-frequency induction heating device designed by the utility model, through the structural design of the vibration base, vibration can be generated while hard alloy is heated, so that hard alloy wastes are crushed, and the energy consumption of a subsequent ball milling process is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of medium-frequency heating devices, and in particular to a medium-frequency induction heating device for waste cemented carbide. Background Technology

[0002] A medium-frequency induction heating device mainly consists of a medium-frequency power supply, an induction coil, and the workpiece to be heated. The medium-frequency power supply converts industrial frequency AC power into medium-frequency AC power, typically between 1000Hz and 100kHz. When the medium-frequency current passes through the induction coil, a medium-frequency alternating magnetic field is generated around the coil. The metal workpiece within this magnetic field experiences electromagnetic induction, resulting in a closed-loop induced current, also known as eddy current. Under the resistance of the metal workpiece, the eddy current converts electrical energy into heat energy, causing the workpiece to heat up rapidly.

[0003] Hard alloys (such as tungsten-cobalt alloys) have extremely high hardness at room temperature (reaching HRA 89-93), but when heated to 800-1000℃ using medium-frequency induction heating, microcracks will form due to differences in the coefficients of thermal expansion. Vibration (frequency 10-50Hz, amplitude 0.1-2mm) can accelerate the propagation of these cracks through mechanical stress, breaking the blocky waste into particles with a diameter of 5-50mm. This reduces the energy consumption of subsequent ball milling processes. Existing medium-frequency induction heating devices lack a vibration mechanism, requiring the heated hard alloy material to be removed before vibration or hammering. Removing and processing high-temperature hard alloys not only affects energy consumption but also poses operational safety risks. To address this problem, this utility model provides a solution. Utility Model Content

[0004] The purpose of this invention is to provide a medium-frequency induction heating device for waste cemented carbide.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A medium-frequency induction heating device for waste cemented carbide includes a base, a heat insulation sleeve, and a top cover. A magnetic yoke and an induction coil are installed inside the heat insulation sleeve. The base has feet at its bottom. The heat insulation sleeve is mounted on the base. Positioning ears are provided on the outer wall of the base, and vertically positioned positioning rods are provided on the positioning ears. Positioning sleeves that mate with the positioning rods are provided on the outer wall of the heat insulation sleeve. The top cover covers the top of the heat insulation sleeve and has a lifting ring. A vibrating base is installed in a mounting groove on the base. The outer side of the vibrating base is positioned between the base and the outer wall. A receiving trough is formed at the location. A wall liner is installed on the vibrating base. The bottom of the base has a mounting hole. An exciter is installed at the bottom of the vibrating base and is located in the mounting hole. A material collection cavity is provided on the upper part of the vibrating base. The wall liner is installed above the material collection cavity. A baffle plate is installed at the bottom of the wall liner. The baffle plate has several evenly distributed material holes. The material holes connect the inner cavity of the wall liner and the material collection cavity. The bottom side wall of the material collection cavity has a downwardly inclined discharge hole. The discharge end of the discharge hole is connected to the receiving trough.

[0007] Furthermore, there are multiple feeding holes, which are evenly distributed on the bottom outer side of the material collection cavity.

[0008] Furthermore, there are two positioning ears and two positioning rods, symmetrically arranged on both sides of the base, and two corresponding positioning sleeves are provided.

[0009] Furthermore, the heat insulation sleeve and the base are fixedly connected by a snap-fit ​​structure.

[0010] Furthermore, the top cover and the heat insulation sleeve are fixed together by bolts.

[0011] In summary, the present invention has the following beneficial effects: The medium-frequency induction heating device designed in this invention, through the design of a vibration base structure, can generate vibration while heating the cemented carbide, thereby crushing the cemented carbide waste and reducing the energy consumption of the subsequent ball milling process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0013] Figure 2 This is a structural schematic diagram of the vibration base part of this utility model.

[0014] In the diagram, 1. Base; 2. Heat insulation sleeve; 3. Top cover; 4. Magnetic yoke; 5. Induction coil; 6. Wall lining; 7. Vibration base; 8. Material receiving trough; 9. Foot; 10. Positioning ear; 11. Positioning sleeve; 12. Positioning rod; 13. Mounting hole; 14. Vibrator; 15. Lifting ring; 16. Baffle plate; 17. Material collection chamber; 18. Discharge hole. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0016] like Figure 1 and Figure 2 As shown, a medium-frequency induction heating device for waste hard alloy includes a base 1, a heat insulation sleeve 2, and a top cover 3. A magnetic yoke 4 and an induction coil 5 are installed inside the heat insulation sleeve 2. The base 1 has feet 9 at its bottom. The heat insulation sleeve 2 is mounted on the base 1. A positioning ear 10 is provided on the outer wall of the base 1, and a vertically positioned positioning rod 12 is provided on the positioning ear 10. A positioning sleeve 11 that mates with the positioning rod 12 is provided on the outer wall of the heat insulation sleeve 2. The top cover 3 covers the top of the heat insulation sleeve 2 and has a lifting ring 15. A vibrating base 7 is installed in the mounting groove on the base 1. A receiving groove 8 is formed between the outer side of the vibrating base 7 and the base 1. A vibrating base 7 is mounted on... The base 7 has a wall liner 6, and the bottom of the base 1 is provided with a mounting hole 13. The bottom of the vibrating base 7 is provided with a vibrator 14, which is located inside the mounting hole 13. The vibrator 14 is an electromagnetic vibrator. The entire vibrating base 7 vibrates, causing the heated hard alloy to break. The vibrating base 7 is provided with a material collection cavity 17. The wall liner 6 is installed above the material collection cavity 17. The bottom of the wall liner 6 is provided with a baffle plate 16. The baffle plate 16 is provided with several evenly distributed material holes. The material holes connect the inner cavity of the wall liner 6 and the material collection cavity 17. The bottom side wall of the material collection cavity 17 is provided with a downwardly inclined discharge hole 18. The discharge end of the discharge hole 18 is connected to the receiving groove 8.

[0017] Furthermore, such as Figure 2 As shown, there are multiple feeding holes 18, which are evenly distributed on the bottom outer side of the material collection cavity 17. By setting multiple feeding holes 18 for feeding, it is possible to avoid the need for maintenance after a certain feeding hole 18 becomes blocked.

[0018] Furthermore, such as Figure 1 As shown, there are two positioning ears 10 and two positioning rods 12, which are symmetrically arranged on both sides of the base 1, and two positioning sleeves 11 are provided accordingly.

[0019] Furthermore, the heat insulation sleeve 2 and the base 1 are fixedly connected by a snap-fit ​​structure, which facilitates connection and disassembly.

[0020] Furthermore, the top cover 3 and the heat insulation sleeve 2 are fixed together by bolts. The entire top cover 3 and heat insulation sleeve 2 can be hoisted by an overhead crane and positioned and installed by guide rod 12.

[0021] Working principle: The waste cemented carbide material is placed inside the wall liner 6, and then the heat insulation sleeve 2 and the top cover 3 are hoisted onto the base 1 by an overhead crane. The induction coil is energized to heat the waste cemented carbide material. When the temperature reaches 800-1000℃, the vibrator 14 is activated. The vibration of the vibrator 14 causes the cemented carbide to break into small particles, which pass through the baffle plate 16 and enter the collection chamber 17. They then enter the receiving trough 8 through the discharge hole 18 for unified collection. Some cemented carbide that is not completely broken remains inside the wall liner 6. After processing, the heat insulation sleeve 2 and the top cover 3 are lifted, and the cemented carbide particles are collected from the receiving trough 8.

[0022] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A medium-frequency induction heating device for waste hard alloy, comprising a base (1), a heat insulation sleeve (2), and a top cover (3), wherein a magnetic yoke (4) and an induction coil (5) are installed inside the heat insulation sleeve (2), a foot (9) is provided at the bottom of the base (1), the heat insulation sleeve (2) is installed on the base (1), a positioning ear (10) is provided on the outer side wall of the base (1), a vertically arranged positioning rod (12) is provided on the positioning ear (10), a positioning sleeve (11) that cooperates with the positioning rod (12) is provided on the outer wall of the heat insulation sleeve (2), and the top cover (3) covers the top of the heat insulation sleeve (2), and a lifting ring (15) is provided on the top cover (3), characterized in that: A vibrating base (7) is installed in the mounting groove on the base (1). A receiving groove (8) is formed between the outer side of the vibrating base (7) and the base (1). A wall liner (6) is installed on the vibrating base (7). A mounting hole (13) is provided at the bottom of the base (1). An exciter (14) is installed at the bottom of the vibrating base (7). The exciter (14) is located in the mounting hole (13). A material collection cavity (17) is provided on the upper part of the vibrating base (7). The wall liner (6) is installed above the material collection cavity (17). A baffle plate (16) is installed at the bottom of the wall liner (6). A number of evenly distributed material holes are provided on the baffle plate (16). The material holes connect the inner cavity of the wall liner (6) and the material collection cavity (17). An inclined downward discharge hole (18) is provided on the bottom side wall of the material collection cavity (17). The discharge end of the discharge hole (18) is connected to the receiving groove (8).

2. The medium-frequency induction heating device for waste cemented carbide according to claim 1, characterized in that: The number of feeding holes (18) is multiple, and the multiple feeding holes (18) are evenly distributed on the bottom outer side of the material collection cavity (17).

3. The medium-frequency induction heating device for waste cemented carbide according to claim 1, characterized in that: The number of positioning ears (10) and positioning rods (12) are both two, symmetrically arranged on both sides of the base (1), and the number of positioning sleeves (11) is two.

4. The medium-frequency induction heating device for waste cemented carbide according to claim 1, characterized in that: The heat insulation sleeve (2) and the base (1) are fixedly connected by a snap-fit ​​structure.

5. The medium-frequency induction heating device for waste cemented carbide according to claim 1, characterized in that: The top cover (3) and the heat insulation sleeve (2) are fixed together by bolts.

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