Medium-frequency electric furnace with cooling function
By introducing a pumping fan and thermal conduction plate into the intermediate frequency electric furnace, the problem of poor heat dissipation in the metal smelting process of the intermediate frequency electric furnace is solved, rapid cooling and heat recovery are achieved, and the practicality of the equipment is improved.
Patent Information
- Application Number
- CN202421084693.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The existing medium-frequency electric furnace generates a large amount of heat during the metal smelting process, causing the temperature of components such as electromagnetic coils, induction coils and capacitors to rise rapidly, affecting the normal operation of the equipment. The existing cooling method uses water cooling on the outside, resulting in the inability to timely internal heat. Dissipate, cool down poorly.
An intermediate frequency electric furnace with a pumping fan and a thermal conduction plate was designed to directly extract the internal hot air through the pumping fan, and the heat conduction plate was used to transfer heat to the water in the water tank to achieve rapid cooling, while using a temperature sensor and solenoid valve. Recycle hot water to avoid waste of resources.
It realizes rapid internal cooling of the intermediate frequency electric furnace, protects the electric furnace components, avoids waste of resources, and improves the practicality and efficiency of the equipment.
Smart Images
Figure CN222257637U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medium frequency electric furnaces, in particular to a medium frequency electric furnace with a temperature reduction function. Background Art
[0002] The medium frequency electric furnace is a power supply device that converts the industrial frequency 50HZ AC into medium frequency (300HZ or more to 10000HZ). It consists of several parts, such as frequency conversion device, furnace body, and furnace front control. It is based on the basic principle of electromagnetic induction. First, the three-phase industrial frequency AC is rectified into DC, and then the DC is converted into an adjustable medium frequency current to supply the load composed of capacitors and induction coils, generating high-density magnetic lines in the induction coil, and cutting the metal material contained in the induction coil, generating large eddy currents in the metal material. This eddy current also has some properties of medium frequency current, that is, the free electrons of the metal itself flow in the metal body with resistance to generate heat.
[0003] At present, most of the existing medium-frequency electric furnaces have a cooling function. When the medium-frequency electric furnace is working, especially in the process of smelting metal, a large amount of heat will be generated. This heat mainly comes from components such as electromagnetic coils, induction coils and capacitors. If the heat cannot be dissipated in time, the temperature of these components will rise rapidly, affecting the normal operation of the equipment. However, when cooling down, most of the existing medium-frequency electric furnaces are cooled by water on the outside of the electric furnace, which causes the heat inside the electric furnace to be unable to be dissipated to the outside in time, and the cooling effect is poor. Utility Model Content
[0004] The purpose of the utility model is to provide a medium frequency electric furnace with a temperature reduction function to solve the problems raised in the above background technology.
[0005] To achieve the above purpose, the utility model provides the following technical solution: a medium frequency electric furnace with a cooling function, comprising a mounting frame and a furnace body fixed above the mounting frame, and also comprising:
[0006] A support plate bolted to the left and right sides of the top of the mounting frame, a top plate fixed to the top of the support plate, a box body fixed to the left and right sides of the bottom of the top plate, a positioning structure arranged inside the box body, a fixing frame arranged above the furnace body, and connecting plates fixed to the left and right sides of the fixing frame, and an exhaust fan arranged inside the fixing frame;
[0007] A water tank is fixed on the top of the top plate, and a plurality of heat conducting plates are arranged through the bottom of the water tank.
[0008] Preferably, the positioning structure includes a threaded rod rotatably connected to the top of the inner wall of the box body, a worm wheel fixed above the surface of the threaded rod, a worm rotatably connected to the rear of the inner wall of the box body, a driving motor fixed to the surface of one side of the box body, and a lifting strip sleeved below the surface of the threaded rod, the bottom end of the threaded rod passes through the bottom of the box body and is rotatably connected to the box body, the worm is meshed with the worm wheel, and the bottom end of the lifting strip is fixedly connected to the connecting plate.
[0009] Preferably, the output shaft of the driving motor passes through the interior of the box body and is fixedly connected to one end of the worm, and the bottom end of the threaded rod extends into the interior of the lifting bar and is threadedly connected to the inner wall of the lifting bar.
[0010] Preferably, guide blocks are fixed above both front and rear sides of the lifting bar, guide rods are fixed at both front and rear sides of the bottom of the box body, and the guide rods penetrate the guide blocks and are slidably connected to the guide blocks.
[0011] Preferably, the heat conducting plate is made of copper-aluminum alloy, and the bottom of the heat conducting plate passes through the top plate and extends to the bottom of the top plate, and the top of the heat conducting plate extends to the top of the inside of the water tank.
[0012] Preferably, a temperature sensor is fixed to the rear side of the top of the water tank, and the induction head of the temperature sensor penetrates into the interior of the water tank. The right side of the water tank is connected to a solenoid valve, and the temperature sensor and the solenoid valve are used in coordination with each other.
[0013] Preferably, a limiting plate is fixed above the surfaces of the supporting plates on one side facing each other, and one side of the connecting plate extends to one side of the lifting strip and is located below the limiting plate.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0015] The utility model dissipates heat and cools down the electric furnace by means of exhausting air. When the medium frequency electric furnace is in use, the hot air inside the medium frequency electric furnace can be directly extracted and discharged to the outside, thereby quickly cooling the inside of the electric furnace and effectively protecting the components inside the medium frequency electric furnace. Moreover, the medium frequency electric furnace can also recycle the exhausted heat to avoid waste of resources, thereby effectively improving the practicability of the medium frequency electric furnace. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 2 It is a three-dimensional schematic diagram of another viewing angle of the top plate in the utility model;
[0018] Figure 3 It is a three-dimensional schematic diagram of the top plate in the utility model;
[0019] Figure 4 It is a cross-sectional view of the water tank in the utility model;
[0020] Figure 5 It is a three-dimensional schematic diagram of the positioning structure in the utility model.
[0021] In the figure: 1. mounting frame; 2. furnace body; 3. support plate; 4. top plate; 5. box body; 6. adjustment structure; 61. threaded rod; 62. worm gear; 63. worm; 64. drive motor; 65. lifting strip; 7. connecting plate; 8. fixing frame; 9. exhaust fan; 10. water tank; 11. heat conduction plate; 12. guide block; 13. guide rod; 14. temperature sensor; 15. solenoid valve; 16. limit plate. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] See also Figure 1-5 As shown, a medium frequency electric furnace with a cooling function includes a mounting frame 1 and a furnace body 2, support plates 3 are bolted on the left and right sides of the top of the mounting frame 1, a top plate 4 is fixed on the top of the support plate 3, box bodies 5 are fixed on the left and right sides of the bottom of the top plate 4, and a positioning structure 6 is arranged inside the box body 5, a fixing frame 8 is arranged above the furnace body 2, and connecting plates 7 are fixed on the left and right sides of the fixing frame 8, an exhaust fan 9 is arranged inside the fixing frame 8, a water tank 10 is fixed on the top of the top plate 4, and a plurality of heat conducting plates 11 are penetrated through the bottom of the water tank 10, and a water inlet pipe is connected to the front side of the water tank 10, and the staff can inject cold water into the water tank 10 through the water inlet pipe.
[0024] The adjustment structure 6 includes a threaded rod 61, a worm wheel 62, a worm 63, a driving motor 64 and a lifting strip 65. The threaded rod 61 is rotatably connected to the top of the inner wall of the box body 5, and the bottom end of the threaded rod 61 passes through the bottom of the box body 5 and is rotatably connected to the box body 5. The worm wheel 62 is fixed above the surface of the threaded rod 61, and the worm 63 is rotatably connected to the rear of the inner wall of the box body 5, and the worm 63 is meshed with the worm wheel 62. The driving motor 64 is fixed on the surface of one side of the box body 5. The lifting strip 65 is sleeved below the surface of the threaded rod 61, and the bottom end of the lifting strip 65 is connected to the connection The plates 7 are fixedly connected, the output shaft of the driving motor 64 passes through the interior of the box body 5 and is fixedly connected to one end of the worm 63, the bottom end of the threaded rod 61 extends to the interior of the lifting bar 65 and is threadedly connected to the inner wall of the lifting bar 65. When the staff turns on the driving motors 64 on both sides, the output shaft of the driving motor 64 drives the worm 63 to rotate, the worm 63 drives the worm wheel 62 on the front side to rotate, and the threaded rod 61 rotates accordingly, so that the lifting bar 65 drives the fixed frame 8 below to move up and down, so as to adjust the height of the exhaust fan 9.
[0025] Guide blocks 12 are fixed above the front and rear sides of the lifting bar 65, and guide rods 13 are fixed to the front and rear sides of the bottom of the box body 5, and the guide rods 13 penetrate the guide blocks 12 and are slidably connected with the guide blocks 12. When the threaded rod 61 rotates, the guide blocks 12 on both sides guide the lifting bar 65, so that the lifting bar 65 can only move up and down, and the guide blocks 12 will slide on the surface of the guide rods 13.
[0026] The heat conducting plate 11 is made of copper-aluminum alloy, and the bottom of the heat conducting plate 11 passes through the top plate 4 and extends to the bottom of the top plate 4, and the top of the heat conducting plate 11 extends to the top of the inside of the water tank 10. When the exhaust fan 9 below is turned on, the heat inside the furnace body 2 will be discharged upward, so that the hot air contacts the heat conducting plate 11 above, and the heat enters the inside of the water tank 10 through heat transfer, thereby heating the water inside the water tank 10.
[0027] A temperature sensor 14 is fixed to the rear side of the top of the water tank 10, and the induction head of the temperature sensor 14 penetrates into the interior of the water tank 10. A solenoid valve 15 is connected to the right side of the water tank 10, and the temperature sensor 14 and the solenoid valve 15 are used in conjunction with each other. When heat is recovered through the heat conduction plate 11, the temperature sensor 14 can monitor the temperature inside the water tank 10. When the water temperature inside the water tank 10 reaches a suitable temperature, the solenoid valve 15 on one side will open, and the hot water will be discharged through the solenoid valve 15 so that the staff can inject cold water again.
[0028] A limiting plate 16 is fixed above the surface of the opposite side of the support plate 3. One side of the connecting plate 7 extends to one side of the lifting bar 65 and is located below the limiting plate 16. When the connecting plate 7 moves upward, the limiting plates 16 on both sides can control the rising height of the connecting plate 7 to avoid collision between the exhaust fan 9 and the solenoid valve 15.
[0029] Working principle: During the use of the medium frequency electric furnace, the staff turns on the drive motors 64 on both sides to control the fixing frame 8 to move downward. When the fixing frame 8 enters the furnace mouth of the furnace body 2, the staff turns off the drive motor 64 and turns on the exhaust fan 9, so that the exhaust fan 9 draws the hot air inside the furnace body 2 upward, and the hot air directly contacts the heat conduction plate 11, and continuously heats the water inside the water tank 10 through the heat conduction plate 11, and recovers the heat when the furnace body 2 is cooled down. When the temperature inside the water tank 10 rises to a certain height, the solenoid valve 15 will discharge the hot water, and then the staff can inject cold water into the water tank 10 again, and cool the furnace body 2 again through the exhaust fan 9 below. After the use of the medium frequency electric furnace is completed, the staff can control the drive motors 64 on both sides again to control the fixing frame 8 to rise so that the furnace body 2 can pour out the materials inside it.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A medium frequency electric furnace with a cooling function, comprising a mounting frame (1) and a furnace body (2) fixed above the mounting frame (1), characterized in that: Also includes: A support plate (3) bolted to the left and right sides of the top of the mounting frame (1), a top plate (4) being fixed to the top of the support plate (3), a box body (5) being fixed to the left and right sides of the bottom of the top plate (4), a positioning structure (6) being arranged inside the box body (5), a fixing frame (8) being arranged above the furnace body (2), a connecting plate (7) being fixed to the left and right sides of the fixing frame (8), and an exhaust fan (9) being arranged inside the fixing frame (8); A water tank (10) is fixed on the top of the top plate (4), and a plurality of heat conduction plates (11) are provided through the bottom of the water tank (10).
2. The medium frequency electric furnace with a cooling function according to claim 1, characterized in that: The positioning structure (6) comprises a threaded rod (61) rotatably connected to the top of the inner wall of the box body (5), a worm wheel (62) fixed above the surface of the threaded rod (61), a worm (63) rotatably connected to the rear of the inner wall of the box body (5), a driving motor (64) fixed to a surface of one side of the box body (5), and a lifting bar (65) sleeved below the surface of the threaded rod (61); the bottom end of the threaded rod (61) penetrates to the bottom of the box body (5) and is rotatably connected to the box body (5); the worm (63) is meshed with the worm wheel (62); and the bottom end of the lifting bar (65) is fixedly connected to the connecting plate (7).
3. The medium frequency electric furnace with a cooling function according to claim 2, characterized in that: The output shaft of the driving motor (64) passes through the interior of the box body (5) and is fixedly connected to one end of the worm (63); the bottom end of the threaded rod (61) extends into the interior of the lifting bar (65) and is threadedly connected to the inner wall of the lifting bar (65).
4. The medium frequency electric furnace with a cooling function according to claim 2, characterized in that: Guide blocks (12) are fixed above both the front and rear sides of the lifting bar (65), and guide rods (13) are fixed at both the front and rear sides of the bottom of the box body (5), and the guide rods (13) penetrate the guide blocks (12) and are slidably connected to the guide blocks (12).
5. The medium frequency electric furnace with a cooling function according to claim 1, characterized in that: The heat conducting plate (11) is made of copper-aluminum alloy, and the bottom of the heat conducting plate (11) penetrates the top plate (4) and extends to the bottom of the top plate (4), and the top of the heat conducting plate (11) extends to the top of the interior of the water tank (10).
6. The medium frequency electric furnace with a cooling function according to claim 1, characterized in that: A temperature sensor (14) is fixed to the rear side of the top of the water tank (10), and the induction head of the temperature sensor (14) penetrates into the interior of the water tank (10). The right side of the water tank (10) is connected to a solenoid valve (15), and the temperature sensor (14) and the solenoid valve (15) are used in coordination with each other.
7. The medium frequency electric furnace with a cooling function according to claim 2, characterized in that: A limiting plate (16) is fixed above the surface of one side of the support plate (3) facing each other, and one side of the connecting plate (7) extends to one side of the lifting bar (65) and is located below the limiting plate (16).