Smelting furnace with automatic cleaning function and self-cleaning process thereof
By designing a furnace with automatic cleaning function, the hydraulic push rod and magnetic field rotation effect is used to solve the problem of reduced efficiency caused by adsorption of metal residues on the inner wall of the furnace, and efficient automatic cleaning and melting process optimization is achieved.
Patent Information
- Application Number
- CN202411774327.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-02-14
AI Technical Summary
In the prior art, after a long time of use of the furnace, metal or alloy is easily adsorbed to the inner wall, resulting in an increase in wall thickness and prolonged smelting time. The traditional manual cleaning method is slow and cumbersome, and there is a lack of automated cleaning solutions.
A furnace with automatic cleaning function was designed, adopting a structure including a mounting frame, insulation frame, hydraulic push rod, permanent magnet, upper and lower contact ring and friction line. The rotating ring is rotated in the melting crucible under the control of the hydraulic push rod, and the rotating ring is rotated in the melting crucible under the control of the hydraulic push rod. The rotational effect generated by the induction coil and magnetic field achieves automatic cleaning.
Through the automatic cleaning process, the metal melting efficiency is improved, the melting time is shortened, the metal residue on the inner wall of the crucible is cleaned, the inner wall of the crucible is kept smooth and smooth, and the mechanical strength and stability of the equipment are improved.
Smart Images
Figure CN119436824A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of furnace cleaning, and in particular to a furnace with an automatic cleaning function and a self-cleaning process thereof. Background Art
[0002] The furnace has many functions in the metallurgical process, mainly including alloy smelting, obtaining high-purity metal melts and recycling resources. By melting metal ingots and scrap metals and adding the necessary alloy components, the smelting furnace can melt them into the required alloy. This process includes operations such as slagging and refining to ensure that the composition of the alloy melt meets the requirements, thereby ensuring the best physical properties of the metal alloy.
[0003] However, as the furnace is used for a long time, some metals or alloys are easily adsorbed on the inner wall of the furnace, which increases the wall thickness of the furnace and prolongs the smelting time, thereby reducing the smelting efficiency. Traditionally, the residue is cleaned manually, but this cleaning process is slow and cumbersome. Therefore, a device is needed to automatically clean the inner wall of the furnace to ensure the melting efficiency and stability during its use. Summary of the invention
[0004] The purpose of the present invention is to solve the above-mentioned shortcomings existing in the prior art and to propose a melting furnace with automatic cleaning function and a self-cleaning process thereof.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A furnace with an automatic cleaning function comprises a mounting frame, a heat preservation frame is rotatably mounted at the middle position above the mounting frame, height adjustment mechanisms are mounted on both sides of the upper end of the mounting frame, a mounting plate is mounted on the working end of the height adjustment mechanism, a through mounting groove is provided at the middle position of the mounting plate, a support rod fixedly mounted on the upper end of the mounting plate is provided on one side of the mounting groove, a permanent magnet is fixedly connected to the upper end of the support rod, the permanent magnet is located directly above the mounting groove, an upper wiring port is mounted on one side of the upper end of the permanent magnet, a mounting bearing is rotatably mounted at the middle position of the upper end of the permanent magnet, an upper contact ring is connected to the upper end of the mounting bearing, the lower end of the upper contact ring is sleeved on the outer side of the permanent magnet, the lower end of the permanent magnet is connected to a lower rotating ring, and a friction line is wound around the surface of the lower rotating ring; A melting crucible is fixedly installed inside the insulation frame, an induction coil is sleeved outside the melting crucible, and electrical graphite is fixedly installed in the bottom wall of the melting crucible. An electrical component connected to the upper wiring port and the lower wiring port is installed on the insulation frame.
[0006] Preferably, a rotating seat is fixedly installed on one side of the upper end of the mounting frame, a fixed shaft is rotatably installed on the rotating seat, a driving motor is fixedly installed on the other side of the upper end of the mounting frame, and the fixed shaft and the output end of the driving motor are fixedly connected to the insulation frame.
[0007] Preferably, the height adjustment mechanism comprises hydraulic push rods fixedly mounted on the left and right sides of the upper end of the mounting frame, and the telescopic ends of the hydraulic push rods face upward and are fixedly connected to the mounting plate.
[0008] Preferably, a filter screen is detachably installed at the middle position of the lower end of the lower rotating circle.
[0009] Preferably, a pouring spout is installed at the upper end of the melting crucible.
[0010] Preferably, the upper end of the electrically conductive graphite is arranged in a ring shape and its surface is flush with the inner bottom wall surface of the melting crucible.
[0011] Preferably, the power-on component comprises an induction power supply fixedly mounted on the heat preservation frame, the positive pole of the induction power supply is connected to the upper wiring port, and the negative pole of the induction power supply is connected to the lower wiring port.
[0012] Preferably, the induction coil is powered by an external power supply device.
[0013] Preferably, the upper contact ring, the lower rotating ring, the friction wire, the filter screen and the melting crucible are all made of graphite material.
[0014] The self-cleaning process of the furnace with automatic cleaning function includes the following steps: S1. First, start the hydraulic push rod to control the mounting plate to move downward and put the lower rotating circle into the melting crucible; S2, connect the induction power supply to the upper wiring port and the lower wiring port respectively through external wires, and at the same time, the bottom connector of the lower rotating circle is in contact with the graphite for connection; S3, placing the metal to be melted into the melting crucible, starting the external power supply device to energize the induction coil, thereby heating the metal inside the melting crucible to melt it; S4, while step S3 is being performed, starting the induction power supply, so that a magnetic field exists around the permanent magnet, so that under the action of the Ampere force and with the assistance of the installed bearing, the upper contact circle and the lower rotating circle begin to rotate; S5. After the melting is completed, the hydraulic push rod is started to make the lower rotating circle leave the melting crucible, so that the filter screen takes the aggregate of metal impurities out of the molten metal; S6. Turn off the external power supply equipment and the induction power supply, start the drive motor to tilt the insulation frame, and let the molten metal pour out through the pouring port.
[0015] Compared with the prior art, the advantages of the present invention are: 1. In the present application, when the lower rotating circle rotates in the molten material, it will drive the surrounding molten liquid to move together. Since graphite has good thermal conductivity, it constantly contacts with the molten material in different areas during its rotation, so that heat can be transferred more quickly and evenly in the molten material, thereby improving the melting efficiency and shortening the smelting time. At the same time, the disturbance generated by the rotating lower rotating circle makes it easier for bubbles to float to the surface of the molten metal and escape, and also makes it easier for inclusions to gather and separate from the metal.
[0016] 2. The rotating lower rotating circle in the present application is in close contact with the inner wall of the crucible. During high-speed rotation, the surface of the lower rotating circle and the inner wall of the crucible generate moderate physical friction, which can scrape off tiny metal particles or impurity layers attached to the inner wall of the crucible, thereby gradually cleaning off metal residues that may adhere to the inner wall of the crucible due to high temperature during the smelting process, and keeping the inner wall of the crucible relatively smooth and flat.
[0017] 3. The friction wire wrapped in this application can play a certain role in reinforcing the lower rotating circle, improve its mechanical strength and stability, and prevent the lower rotating circle from being deformed or damaged due to external factors such as vibration and collision during use. It is especially suitable for some equipment that needs to work in a relatively harsh mechanical environment.
[0018] 4. In the present application, when the lower rotating circle is placed in an induction coil passing alternating current, the alternating magnetic field generated by the induction coil will generate an induced electromotive force and an induced current in the lower rotating circle. The interaction between the magnetic field generated by the induced current and the external alternating magnetic field is utilized to generate a torque that is more conducive to acceleration, thereby improving the rotation efficiency of the lower rotating circle.
[0019] In summary, the present application can, through the arrangement of the above-mentioned structure, not only speed up the melting efficiency of the metal, shorten its melting time, and make inclusions easier to gather and separate from the metal, but also gradually clean up the metal residues that may adhere to the inner wall of the crucible due to high temperature during the smelting process, thereby keeping the inner wall of the crucible relatively smooth and flat. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall axonometric structure of the furnace with automatic cleaning function proposed by the present invention.
[0021] Figure 2 This is a schematic diagram of the drive motor and pouring port structure of the furnace with automatic cleaning function proposed by the present invention.
[0022] Figure 3 This is a schematic diagram of the structure of the hydraulic push rod and mounting plate of the furnace with automatic cleaning function proposed by the present invention.
[0023] Figure 4This is a schematic structural diagram of the upper contact ring and lower rotating ring of the furnace with automatic cleaning function proposed by the present invention.
[0024] Figure 5 This is a schematic diagram of the structure of the melting crucible and induction coil of the melting furnace with automatic cleaning function proposed by the present invention.
[0025] Figure 6 This is a schematic diagram of the half-section structure of the insulation frame of the furnace with automatic cleaning function proposed by the present invention.
[0026] In the figure: 1 mounting frame, 2 insulation frame, 3 fixed shaft, 4 driving motor, 5 pouring port, 6 hydraulic push rod, 7 mounting plate, 8 support rod, 9 upper wiring port, 10 lower wiring port, 11 permanent magnet, 12 mounting bearing, 13 upper contact ring, 14 lower rotating ring, 15 friction line, 16 filter screen, 17 melting crucible, 18 induction coil, 19 connected graphite, 20 induction power supply. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0028] Reference Figures 1 to 6 A furnace with an automatic cleaning function includes a mounting frame 1, a rotating seat is fixedly installed on one side of the upper end of the mounting frame 1, a fixed shaft 3 is rotatably installed on the rotating seat, a driving motor 4 is fixedly installed on the other side of the upper end of the mounting frame 1, and an insulation frame 2 is fixedly installed between the fixed shaft 3 and the output end of the driving motor 4, so that the insulation frame 2 can rotate inside the mounting frame 1, and hydraulic push rods 6 are also fixedly installed on the left and right sides of the upper end of the mounting frame 1, the telescopic ends of the hydraulic push rods 6 face upward, and the telescopic ends of the two hydraulic push rods 6 are fixedly connected to a mounting plate 7, so that the operation of the hydraulic push rods 6 can control the mounting plate 7 to move up and down to adjust its height.
[0029] A through mounting groove is provided in the middle of the mounting plate 7, and a support rod 8 fixedly installed on the upper end of the mounting plate 7 is provided on one side of the mounting groove, a permanent magnet 11 is fixedly connected to the upper end of the support rod 8, the permanent magnet 11 is located directly above the mounting groove, and a mounting bearing 12 is rotatably installed at the middle position of the upper end of the permanent magnet 11, an upper wiring port 9 is installed on one side of the upper end of the permanent magnet 11, an upper contact ring 13 is connected to the upper end of the mounting bearing 12, and the lower part of the upper contact ring 13 is sleeved on the outer side of the permanent magnet 11, the lower end of the permanent magnet 11 is connected to the lower rotating circle 14, a friction line 15 is wound on the surface of the lower rotating circle 14, and a filter screen 16 is detachably installed at the middle position of the lower end of the lower rotating circle 14.
[0030] A melting crucible 17 is fixedly installed inside the insulation frame 2, and a pouring port 5 is installed at the upper end of the melting crucible 17. An induction coil 18 is sleeved on the outer side of the melting crucible 17, and the induction coil 18 is powered by an external power supply device. A conductive graphite 19 is fixedly installed in the bottom wall of the melting crucible 17. The upper end of the conductive graphite 19 is arranged in a ring shape and its surface is flush with the inner bottom wall surface of the melting crucible 17, so that when the lower rotating circle 14 moves downward to the inside of the melting crucible 17, its lower end joint can contact the upper end of the conductive graphite 19, and the lower end of the conductive graphite 19 is connected to the lower wiring port 10.
[0031] An induction power supply 20 is fixedly installed on one side of the insulation frame 2, the positive pole of the induction power supply 20 is connected to the upper wiring port 9, and the negative pole of the induction power supply 20 is connected to the lower wiring port 10. After the induction power supply 20 starts to be energized, a magnetic field exists around the permanent magnet 11. At this time, current is generated in the upper contact ring 13 and the lower rotating ring 14. The current in the direction perpendicular to the magnetic flux line will be subject to the Ampere force perpendicular to the current direction. Under the action of the Ampere force and the assistance of the installed bearing 12, the upper contact ring 13 and the lower rotating ring 14 start to rotate.
[0032] It should be noted that the upper contact ring 13, the lower rotating ring 14, the friction line 15, the filter screen 16 and the melting crucible 17 are all made of graphite material.
[0033] The specific working principle of the present invention is as follows: first start the hydraulic push rod 6, control the mounting plate 7 to move downward, put the lower rotating circle 14 into the melting crucible 17, the surface of the lower rotating circle 14 is wound with a friction line 15, and the bottom is installed with a filter 16. Through external wires, the induction power supply 20 is connected to the upper wiring port 9 and the lower wiring port 10 respectively, the lower wiring port 10 is connected to the electrical graphite 19, and the bottom joint of the lower rotating circle 14 is also in contact with the electrical graphite 19.
[0034] After the preparation work is completed, the metal to be melted is placed in the melting crucible 17, and the external power supply equipment is started to energize the induction coil 18. After the induction coil 18 is energized, heat is generated to heat the melting crucible 17, and the metal inside the melting crucible 17 begins to melt as the temperature rises.
[0035] In this process, the induction power supply 20 is started, so that a magnetic field exists around the permanent magnet 11, and the positive and negative poles of the induction power supply 20 are connected through the upper wiring port 9, the upper contact ring 13, the lower rotating ring 14, the electrical graphite 19 and the lower wiring port 10, and current is generated in the upper contact ring 13 and the lower rotating ring 14. The current in the direction perpendicular to the magnetic flux lines will be subject to the Ampere force perpendicular to the direction of the current. Under the action of the Ampere force and with the assistance of the installation bearing 12, the upper contact ring 13 and the lower rotating ring 14 begin to rotate.
[0036] Since the material of the lower rotating ring 14 is graphite, and the resistance of graphite material decreases at high temperature, the lower rotating ring 14 rotates faster as the temperature inside the melting crucible 17 increases; and the surface of the lower rotating ring 14 is wound with friction wires 15, such a design has the following advantages; First, when the lower rotating circle 14 rotates in the molten material, it will drive the surrounding molten liquid to move together. Since graphite has good thermal conductivity, it will continuously contact with the molten material in different areas during the rotation process, so that the heat can be transferred more quickly and evenly in the molten material, thereby improving the melting efficiency and shortening the melting time. Second, during the smelting process, gas may be mixed into the metal to form bubbles, or some non-metallic inclusions may exist. The disturbance generated by the rotating lower rotating circle 14 makes it easier for the bubbles to float to the surface of the molten metal and escape, and also makes it easier for the inclusions to gather and separate from the metal. Third, the rotating lower rotating circle 14 is in close contact with the inner wall of the crucible. During the high-speed rotation, the surface of the lower rotating circle 14 and the inner wall of the crucible generate moderate physical friction, which can scrape off tiny metal particles or impurity layers attached to the inner wall of the crucible, just like scrubbing a wall with a brush. The rotation of the lower rotating circle 14 gradually cleans away metal residues that may adhere to the inner wall of the crucible due to high temperature during the smelting process, thereby keeping the inner wall of the crucible relatively smooth and flat.
[0037] Fourth, the wound friction line 15 can play a certain role in reinforcing the lower rotating circle 14, improving its mechanical strength and stability, and preventing the lower rotating circle 14 from being deformed or damaged due to external factors such as vibration and collision during use, which is particularly suitable for some equipment that needs to work in a relatively harsh mechanical environment; Fifth, graphite has good electrical conductivity. When current passes through the lower rotating circle 14, a magnetic field will be generated. Wrapping a layer of friction wire 15 and energizing it will increase the current path and enhance the overall magnetic field strength, thereby enhancing the effect of rotation.
[0038] When the lower rotating circle 14 is placed in the induction coil 18 that is supplied with alternating current, the alternating magnetic field generated by the induction coil 18 will generate an induced electromotive force and an induced current in the lower rotating circle 14. By setting the AC frequency of the induction coil to match the rotation frequency of the lower rotating circle 14, the interaction between the magnetic field generated by the induced current and the external alternating magnetic field can be utilized to generate a torque that is more conducive to acceleration, thereby improving the rotation efficiency of the lower rotating circle 14.
[0039] After melting is completed, there will be a collection of metal impurities above the melting crucible 17. First, the hydraulic push rod 6 is started to lift the lower rotating circle 14 and leave the melting crucible 17. The filter screen 16 below will take the collection of metal impurities out of the molten metal to improve the purity of the molten metal.
[0040] The induction coil 18 and the induction power supply 20 are turned off, the drive motor 4 is started, and with the assistance of the fixed shaft 3, the heat preservation frame 2 is tilted to allow the molten metal to be poured out through the pouring port 5 to complete the melting work.
[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A furnace with an automatic cleaning function, comprising a mounting frame (1), characterized in that: A heat preservation frame (2) is rotatably mounted at the middle position above the mounting frame (1); height adjustment mechanisms are mounted on both sides of the upper end of the mounting frame (1); a mounting plate (7) is mounted on the working end of the height adjustment mechanism; a through mounting groove is provided at the middle position of the mounting plate (7); a support rod (8) fixedly mounted on the upper end of the mounting plate (7) is provided on one side of the mounting groove; a permanent magnet (11) is fixedly connected to the upper end of the support rod (8); the permanent magnet (11) is located directly above the mounting groove; an upper wiring port (9) is mounted on one side of the upper end of the permanent magnet (11); a mounting bearing (12) is rotatably mounted at the middle position of the upper end of the permanent magnet (11); an upper contact ring (13) is connected to the upper end of the mounting bearing (12); the lower end of the upper contact ring (13) is sleeved on the outer side of the permanent magnet (11); the lower end of the permanent magnet (11) is connected to a lower rotating ring (14); a friction line (15) is wound around the surface of the lower rotating ring (14); A melting crucible (17) is fixedly mounted inside the heat preservation frame (2), an induction coil (18) is sleeved on the outside of the melting crucible (17), and an electrical graphite (19) is fixedly mounted in the bottom wall of the melting crucible (17). An electrical component connected to an upper wiring port (9) and a lower wiring port (10) is mounted on the heat preservation frame (2).
2. The furnace with automatic cleaning function according to claim 1, characterized in that: A rotating seat is fixedly mounted on one side of the upper end of the mounting frame (1), a fixed shaft (3) is rotatably mounted on the rotating seat, and a driving motor (4) is fixedly mounted on the other side of the upper end of the mounting frame (1), and the output ends of the fixed shaft (3) and the driving motor (4) are both fixedly connected to the heat preservation frame (2).
3. The furnace with automatic cleaning function according to claim 2, characterized in that: The height adjustment mechanism comprises hydraulic push rods (6) fixedly mounted on the left and right sides of the upper end of the mounting frame (1), wherein the telescopic ends of the hydraulic push rods (6) face upward and are fixedly connected to the mounting plate (7).
4. The furnace with automatic cleaning function according to claim 3, characterized in that: A filter screen (16) is detachably mounted at the middle position of the lower end of the lower rotating circle (14).
5. The furnace with automatic cleaning function according to claim 4, characterized in that: The upper end of the melting crucible (17) is provided with a pouring spout (5).
6. The furnace with automatic cleaning function according to claim 5, characterized in that: The upper end of the electrically conductive graphite (19) is arranged in a ring shape and its surface is flush with the inner bottom wall surface of the melting crucible (17).
7. The furnace with automatic cleaning function according to claim 6, characterized in that: The power supply assembly comprises an induction power supply (20) fixedly mounted on the heat preservation frame (2), the positive electrode of the induction power supply (20) being connected to the upper wiring port (9), and the negative electrode of the induction power supply (20) being connected to the lower wiring port (10).
8. The furnace with automatic cleaning function according to claim 7, characterized in that: The induction coil (18) is powered by an external power supply device.
9. The furnace with automatic cleaning function according to claim 8, characterized in that: The upper contact ring (13), the lower rotating ring (14), the friction line (15), the filter screen (16) and the melting crucible (17) are all made of graphite material.
10. A self-cleaning process for a furnace with an automatic cleaning function, characterized in that: The furnace with automatic cleaning function as claimed in claim 9 further comprises the following steps: S1, first start the hydraulic push rod (6), control the mounting plate (7) to move downward, and place the lower rotating circle (14) into the melting crucible (17); S2, connecting the induction power supply (20) to the upper wiring port (9) and the lower wiring port (10) respectively through external wires, and at the same time, the bottom joint of the lower rotating circle (14) is in contact with the electrical graphite (19); S3, placing the metal to be melted into the melting crucible (17), starting the external power supply device to energize the induction coil (18), thereby heating the metal inside the melting crucible (17) to melt it; S4, while step S3 is being performed, starting the induction power supply (20) so that a magnetic field exists around the permanent magnet (11), so that under the action of the Ampere force and with the assistance of the mounting bearing (12), the upper contact ring (13) and the lower rotating ring (14) begin to rotate; S5, after the melting is completed, the hydraulic push rod (6) is started to make the lower rotating circle (14) leave the melting crucible (17), so that the filter screen (16) takes the aggregate of metal impurities out of the molten metal; S6, turning off the external power supply equipment and the induction power supply (20), starting the drive motor (4) to tilt the heat preservation frame (2), and allowing the molten metal to be poured out through the pouring port (5).