Medium-frequency induction furnace with descaling and cleaning device
By loading steel balls into the heating coil of the medium frequency induction furnace and using the water circulation system to promote the flow of clean water, the steel balls collided with the inner wall of the heating coil and crushed the scale, the problem of scale formation in the induction furnace is solved, and the heating efficiency and normal working ability of the equipment are improved.
Patent Information
- Application Number
- CN202510436002.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2025-06-24
AI Technical Summary
During long-term use of the medium frequency induction furnace, the heat dissipation problem of the induction coil leads to the formation of scale, affecting the heating efficiency and the normal operation of the equipment.
An intermediate frequency induction furnace with descaling cleaning device was designed. By loading steel balls into the heating coil and using the water circulation system to promote the flow of clean water, the steel balls obtain kinetic energy and impact the inner wall of the heating coil to break the scale. Clean water and crushed scale and steel beads are discharged through the sewage discharge assembly.
The scale on the inner wall of the heating coil is effectively removed, the appropriate heating temperature is maintained, the heating efficiency of the induction furnace is improved, and the equipment is prevented from being shut down.
Smart Images
Figure CN120194512A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of electric induction heating, and particularly to an intermediate frequency induction furnace with a descaling and cleaning device. Background Art
[0002] An induction furnace is a device that uses the principle of electromagnetic induction to heat and melt metals. Its main components include an inductor, a furnace body, a power supply, capacitors, and a control system, etc. Under the action of the alternating electromagnetic field in the induction furnace, eddy currents are generated inside the material, thereby achieving the effect of heating or melting.
[0003] During the long-term use of an intermediate frequency induction furnace, the heat dissipation problem of the induction coil inside the intermediate frequency induction furnace is usually cooled by external circulating water. Because the temperature of the induction coil is relatively high, scale is easily formed on the inner surface of the coil during the circulation of the circulating water. When the scale reaches a certain thickness, the temperature of the induction coil will rise rapidly, and it cannot work normally, resulting in a shutdown phenomenon and affecting production. Summary of the Invention
[0004] In order to improve the problem that the scale on the inner wall of the coil will reduce the heating efficiency, this application provides an intermediate frequency induction furnace with a descaling and cleaning device.
[0005] The intermediate frequency induction furnace with a descaling and cleaning device provided by this application adopts the following technical solutions: An intermediate frequency induction furnace with a descaling and cleaning device includes an inner furnace body for melting metals and an outer furnace body arranged outside the inner furnace body. A plurality of annular tubes are arranged at intervals between the inner furnace body and the outer furnace body along the vertical direction from top to bottom. An inlet manifold and an outlet manifold are also arranged outside the outer furnace body. A liquid inlet pipe is connected between the inlet manifold and each heating coil, and a liquid outlet pipe is connected between the outlet manifold and each heating coil. The inlet manifold and the outlet manifold are connected to a water circulation system. A bead adding pipe for injecting steel balls into the heating coil is connected to each liquid inlet pipe. The feeding end of the bead adding pipe is detachably connected with a cover. A blocking net is arranged at the connection between the liquid outlet pipe and the heating coil. A sewage discharge assembly for discharging scale and steel balls is also arranged on the outer furnace body.
[0006] By adopting the above technical solution, before cleaning, workers pre-load a certain number of steel balls into each heating coil through the bead adding pipe. Then, the water circulation system passes clear water into each heating coil through the shunt cylinder and the liquid inlet pipe. The clear water flows in the heating coil, and thus the steel balls obtain kinetic energy and roll in the heating coil. The impact and extrusion between the steel balls and the inner wall of the heating coil cause the scale attached to the inner wall of the heating coil to break and fall off. The clear water is discharged from the liquid outlet pipe and the confluence cylinder, while the steel balls are blocked by the intercepting net in the heating coil to break the scale. After the scale falls off, the sewage discharging assembly discharges the mixture of steel balls and scale together. By using the steel balls to break the scale for cleaning, during the working process of the heating coil, an appropriate heating temperature can be maintained, and the heating efficiency of the induction furnace is improved.
[0007] Optionally, the sewage discharging assembly includes a sewage collecting cylinder. A sewage discharging pipe is communicated between the sewage collecting cylinder and each heating coil. An intercepting plate is vertically slidably arranged in each heating coil relative to the connection position with the sewage discharging pipe. A driving part for driving the intercepting plate to lift is arranged outside the sewage collecting cylinder.
[0008] By adopting the above technical solution, during the normal operation of the heating coil and the process of the steel balls breaking the scale, the intercepting plate is at the lowest position, thus closing the connection position between the liquid outlet pipe and the heating coil. When discharging sewage, under the action of the driving part, the intercepting plate rises, and the scale debris and steel balls in the heating coil are discharged into the sewage collecting cylinder together.
[0009] Optionally, the driving part includes two bearing plates and a mounting rod. The two bearing plates are both arranged on the outer furnace body and are distributed up and down. Adjusting grooves are respectively formed in the two bearing plates along the radial direction of the inner furnace body. The mounting rod vertically slides through the two adjusting grooves and is slidably matched with them. A mounting ring for being erected on the two bearing plates is rotatably sleeved on the mounting rod. A plurality of magnetic blocks are arranged on the mounting rod. One magnetic block corresponds to one intercepting plate and is magnetically attracted to it.
[0010] By adopting the above technical solution, during the normal operation of the heating coil and the process of the steel balls breaking the scale, the mounting ring is erected on the lower bearing plate, and the magnetic block is located below the corresponding intercepting plate. When discharging sewage, the worker manually lifts the mounting rod upward, rotates the mounting ring to make it erected on the upper bearing plate, and then pushes the mounting rod close to the axis of the inner furnace body, so that the magnetic block moves above the corresponding intercepting plate. The magnetic attraction of the magnetic block to the corresponding intercepting plate causes the intercepting plate to rise, thus realizing the connection between the heating coil and the sewage collecting cylinder.
[0011] Optionally, the upper surface of the intercepting plate arches upward.
[0012] By adopting the above technical solution, during the rising process of the intercepting plate, the steel balls exactly located on the intercepting plate can automatically roll down under the action of its arc-shaped upper surface, improving the completeness of the steel ball discharge.
[0013] Optionally, multiple magnetic blocks are arranged in two vertical rows, and two vertically adjacent magnetic blocks are circumferentially staggered.
[0014] By adopting the above technical solution, the influence of the magnetic blocks on the normal lifting of the intercepting plates that do not correspond to them is reduced.
[0015] Optionally, a sealing plate is vertically slidable in the sewage collection cylinder. Through holes for communicating it with the sewage collection cylinder are opened on the sealing plate corresponding to each sewage discharge pipe. A pull rod is hinged to the top of the sealing plate and slides out of the top wall of the sewage collection cylinder. An elastic buckle in a C shape is arranged at the top of the sewage collection cylinder, and the pull rod is clamped with the elastic buckle.
[0016] By adopting the above technical solution, during sewage discharge, the through hole communicates the corresponding sewage collection cylinder with the heating coil. Then, the worker manually pulls up the sealing plate and rotates the pull rod to clamp it in the elastic buckle, thereby sealing the communication part between the sewage collection cylinder and the heating coil, and reducing the possibility that the cooling medium flows into the sewage collection cylinder and affects the normal use of the heating coil.
[0017] Optionally, a rotating rod is rotatably penetrated through all the heating coils. The rotating rod is located at the communication part between the heating coil and the liquid inlet pipe, and a baffle extending into the liquid inlet pipe is arranged on the rotating rod.
[0018] By adopting the above technical solution, when the heating coil is passed through with clean water to remove the scale debris inside it, the worker manually rotates the rotating rod, so that the baffle on the rotating rod rotates to abut against the side wall of the liquid inlet pipe, thereby being able to adjust the flow direction and flushing sequence of the clean water, which is beneficial to improving the scale removal effect.
[0019] Optionally, friction blocks are arranged on the outer side wall of the inner furnace body, and the rotating rod rotatably penetrates through the friction blocks.
[0020] By adopting the above technical solution, the friction force between the friction block and the rotating rod is relatively large, thereby reducing the possibility that the baffle on the rotating rod rotates due to the impact of the cooling medium.
[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. Before cleaning, the worker preloads a certain number of steel balls into each heating coil through the bead-adding pipe. Then, the water circulation system passes clear water into each heating coil through the shunt cylinder and the liquid inlet pipe. The clear water flows in the heating coil, and thus the steel balls obtain kinetic energy and roll in the heating coil. The impact and extrusion between the steel balls and the inner wall of the heating coil cause the scale attached to the inner wall of the heating coil to break and fall off. The clear water is discharged from the liquid outlet pipe and the confluence cylinder, while the steel balls are blocked by the intercepting net in the heating coil to break the scale. After the scale falls off, the sewage discharge assembly discharges the mixture of steel balls and scale together. The scale is broken by the steel balls for cleaning. During the working process of the heating coil, an appropriate heating temperature can be maintained, improving the heating efficiency of the induction furnace; 2. During the normal operation of the heating coil and the process of the steel balls breaking the scale, the mounting ring is placed on the lower bearing plate, and the magnetic block is located below the corresponding intercepting plate. During sewage discharge, the worker manually lifts the mounting rod upward and rotates the mounting ring to place it on the higher bearing plate. Then, the worker pushes the mounting rod close to the axis of the inner furnace body, so that the magnetic block moves above the corresponding intercepting plate. The magnetic attraction of the magnetic block to the corresponding intercepting plate causes the intercepting plate to rise, thus realizing the connection between the heating coil and the sewage collection cylinder; 3. During sewage discharge, the through hole connects the corresponding sewage collection cylinder with the heating coil. Then, the worker manually lifts the sealing plate upward and rotates the pull rod to make it snap into the elastic buckle, thereby sealing the connection between the sewage collection cylinder and the heating coil, reducing the possibility that the cooling medium flows into the sewage collection cylinder and affects the normal use of the heating coil; 4. When the heating coil is passed through clear water to remove the scale debris inside, the worker manually rotates the rotating rod, so that the baffle on the rotating rod rotates to abut against the side wall of the liquid inlet pipe, thereby being able to adjust the flow direction and flushing sequence of the clear water, which is beneficial to improving the scale removal effect. Description of the Drawings
[0022] Figure 1 is a schematic structural diagram of an embodiment of the present application.
[0023] Figure 2 is a cross-sectional view of the positional relationship between the inner furnace body, the outer furnace body and the heating coil in an embodiment of the present application.
[0024] Figure 3 is a schematic diagram of the positional relationship between the bearing plate, the mounting rod and the mounting ring in an embodiment of the present application.
[0025] Figure 4 is a cross-sectional view of the positional relationship of the intercepting plate in the heating coil in an embodiment of the present application.
[0026] Figure 5 is a cross-sectional view of the positional relationship between the sewage collection cylinder, the sealing plate and the pull rod in an embodiment of the present application.
[0027] Description of reference numerals: 1, inner furnace body; 2, outer furnace body; 3, heating coil; 4, flow dividing cylinder; 5, flow collecting cylinder; 6, liquid inlet pipe; 7, liquid outlet pipe; 8, bead adding pipe; 9, sealing cover; 10, intercepting net; 11, dirt collecting cylinder; 12, sewage discharge pipe; 13, bearing plate; 131, position adjusting groove; 14, mounting rod; 15, mounting ring; 16, magnetic block; 17, sealing plate; 171, through hole; 18, pull rod; 19, elastic buckle; 20, intercepting plate; 21, rotating rod; 22, retaining piece; 23, friction block. Detailed implementation manners
[0028] The following further elaborates on this application in conjunction with the Figures 1 - 5 accompanying drawings.
[0029] An embodiment of this application discloses an intermediate frequency induction furnace with a descaling and cleaning device.
[0030] Referring to Figure 1 and Figure 2 , the intermediate frequency induction furnace with a descaling and cleaning device includes an inner furnace body 1 for melting metal, an outer furnace body 2 arranged outside the inner furnace body 1, and a plurality of annular heating coils 3 are arranged at intervals between the inner furnace body 1 and the outer furnace body 2 along the vertical direction from top to bottom.
[0031] A flow dividing cylinder 4 and a flow collecting cylinder 5 are symmetrically placed outside the outer furnace body 2 with respect to its axis. A liquid inlet pipe 6 is connected between the flow dividing cylinder 4 and each heating coil 3, and a liquid outlet pipe 7 is connected between the flow collecting cylinder 5 and each heating coil 3. Both the flow dividing cylinder 4 and the flow collecting cylinder 5 are connected to the water circulation system.
[0032] Referring to Figure 1 and Figure 2 , a bead adding pipe 8 for pouring steel beads into the heating coil 3 is connected to each liquid inlet pipe 6. The feeding end of each bead adding pipe 8 is threadedly connected with a sealing cover 9, and an intercepting net 10 is welded at the connection between the liquid outlet pipe 7 and the heating coil 3.
[0033] Referring to Figure 1 and Figure 2 , before cleaning, the worker unscrews the sealing cover 9, and then a certain number of steel beads are poured into each heating coil 3 through the bead adding pipe 8 and the liquid inlet pipe 6. The steel beads are stainless steel beads in the prior art.
[0034] Referring to Figure 1 and Figure 2 , then the water circulation system passes clear water into each heating coil 3 through the flow dividing cylinder 4 and the liquid inlet pipe 6. The clear water pushes the steel beads in the heating coil 3 to collide and move, and the steel beads impact and squeeze the scale attached to the inner wall of the heating coil 3, causing the scale to break and fall off. The clear water is discharged from the liquid outlet pipe 7, while the steel beads are always intercepted in the heating coil 3 by the intercepting net 10.
[0035] Referring to Figure 1And Figure 2 In order to prevent the steel balls from rolling into the flow dividing cylinder 4 when adding steel balls to the liquid inlet pipe 6, when the liquid inlet pipe 6 leads from the flow dividing cylinder 4 to the heating coil 3, it is arranged obliquely downward with a small inclination angle.
[0036] Refer to Figure 1 、 Figure 3 And Figure 4 On the outer furnace body 2, there is also arranged a sewage draining assembly for discharging scale and steel balls. The sewage draining assembly includes a sewage collecting cylinder 11. A sewage draining pipe 12 is communicated between the sewage collecting cylinder 11 and each heating coil 3. Vertically slidably arranged in each heating coil 3 relative to its connection with the sewage draining pipe 12 is an intercepting plate 20. The intercepting plate 20 is circular and made of 45 steel in the prior art. Outside the sewage collecting cylinder 11, there is arranged a driving part for driving the intercepting plate 20 to move up and down.
[0037] Refer to Figure 1 And Figure 3 The driving part includes two bearing plates 13 and a mounting rod 14. The two bearing plates 13 are both horizontally bolted to the inner wall of the outer furnace body 2 and are distributed up and down. On each of the two bearing plates 13, an adjustment groove 131 is opened along the radial direction of the inner furnace body 1. The mounting rod 14 vertically slides through the two adjustment grooves 131 and is in horizontal sliding fit with them.
[0038] Refer to Figure 1 And Figure 3 A frame ring 15 is rotatably sleeved on the mounting rod 14. The frame ring 15 is erected on the bearing plate 13. A plurality of magnetic blocks 16 are bolted to the mounting rod 14 through connecting rods. One magnetic block 16 corresponds to one intercepting plate 20 and is magnetically attracted to it. The plurality of magnetic blocks 16 are arranged in two vertical rows, and the two vertically adjacent magnetic blocks 16 are circumferentially staggered.
[0039] Refer to Figure 1 And Figure 3 When the induction furnace is working normally or during the process of the steel balls breaking the scale, the intercepting plate 20 blocks the connection between the heating coil 3 and the sewage collecting cylinder 11. The magnetic block 16 is located below the corresponding intercepting plate 20, and the frame ring 15 is erected on the lower bearing plate 13.
[0040] Refer to Figure 1 And Figure 3 During sewage draining, the worker manually pulls the mounting rod 14 away from the axis of the inner furnace body 1, then lifts the mounting rod 14 upward and rotates the frame ring 15 so that the frame ring 15 is transferred to be erected on the upper bearing plate 13. Then, the mounting rod 14 is pushed again close to the axis of the inner furnace body 1, so that the magnetic block 16 moves above the corresponding intercepting plate 20. The magnetic attraction of the magnetic block 16 to the intercepting plate 20 causes the intercepting plate 20 to rise. At this time, the heating coil 3 is communicated with the sewage collecting cylinder 11, and the steel balls and scale debris are discharged into the sewage collecting cylinder 11 together.
[0041] Refer toFigure 1 and Figure 3 The upper surface of the intercepting plate 20 arches upward, so that when the intercepting plate 20 moves upward under the action of magnetic attraction, the steel balls located exactly on the intercepting plate 20 can automatically roll off, thereby improving the completeness of the discharge of the steel balls.
[0042] Refer to Figure 5 On the inner wall of the sewage collection cylinder 11, a sealing plate 17 is vertically slidably fitted. Through holes 171 for communicating it with the sewage collection cylinder 11 are opened on the sealing plate 17 corresponding to each sewage discharge pipe 12. A pull rod 18 that slides out of the top wall of the sewage collection cylinder 11 is hinged to the top of the sealing plate 17. An elastic buckle 19 in a C shape is bolted to the top of the sewage collection cylinder 11, and the pull rod 18 is clamped with the elastic buckle 19.
[0043] Refer to Figure 3 and Figure 5 During sewage discharge, the through hole 171 communicates the corresponding sewage collection cylinder 11 with the heating coil 3. After the sewage discharge is completed, the worker manually lifts the sealing plate 17 upward and rotates the pull rod 18 to make it clamped in the elastic buckle 19, thereby blocking the communication between the sewage collection cylinder 11 and the heating coil 3, and reducing the possibility that the cooling medium flows into the sewage collection cylinder 11 and affects the normal use of the heating coil 3.
[0044] Refer to Figure 2 and Figure 3 During sewage discharge, the steel balls and scale debris in the heating coil 3 are flushed out by clean water. Therefore, a rotating rod 21 is commonly rotatably penetrated through all the heating coils 3. The rotating rod 21 is located at the communication part between the heating coil 3 and the liquid inlet pipe 6. A baffle 22 extending into the liquid inlet pipe 6 is welded on the rotating rod 21, and the baffle 22 is made of elastic metal.
[0045] Refer to Figure 2 The worker manually rotates the rotating rod 21, so that the baffle 22 on the rotating rod 21 rotates to abut against the side wall of the liquid inlet pipe 6, thereby being able to adjust the flow direction and flushing sequence of the clean water, which is beneficial to improving the scale removal effect.
[0046] Refer to Figure 2 On the outer side wall of the inner furnace body 1, a friction block 23 is welded. The rotating rod 21 rotatably penetrates through the friction block 23, and the friction between the friction block 23 and the rotating rod 21 is relatively large, thereby reducing the possibility that the baffle 22 on the rotating rod 21 rotates under the impact of the cooling medium.
[0047] The implementation principle of the intermediate frequency induction furnace with a descaling and cleaning device in the embodiment of the present application is as follows: Before cleaning, the worker unscrews the sealing cap 9, and then a certain number of steel balls are poured into each heating coil 3 through the bead adding pipe 8 and the liquid inlet pipe 6. Then, the water circulation system passes clear water into each heating coil 3 through the shunt cylinder 4 and the liquid inlet pipe 6. The clear water pushes the steel balls in the heating coil 3 to collide and move, and the steel balls impact and squeeze the scale adhering to the inner wall of the heating coil 3, causing the scale to break and fall off. The clear water is discharged from the liquid outlet pipe 7, while the steel balls are always intercepted in the heating coil 3 by the intercepting net 10.
[0048] During sewage discharge, the worker manually pulls the installation rod 14 away from the axis of the inner furnace body 1, then lifts the installation rod 14 upward and rotates the frame ring 15 so that the frame ring 15 is transferred to the bearing plate 13 erected at a high place. Then, the installation rod 14 is pushed again to be close to the axis of the inner furnace body 1, so that the magnet 16 moves above the corresponding intercepting plate 20. The magnetic attraction of the magnet 16 to the intercepting plate 20 causes the intercepting plate 20 to rise. At this time, the heating coil 3 communicates with the sewage collection cylinder 11, and the steel balls and scale debris are discharged into the sewage collection cylinder 11 together.
[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A medium frequency induction furnace with a descaling and cleaning device, comprising an inner furnace body (1) for melting metal, an outer furnace body (2) arranged outside the inner furnace body (1), a plurality of heating coils (3) in the form of annular tubes are arranged at intervals from top to bottom between the inner furnace body (1) and the outer furnace body (2), a shunt tube (4) and a confluence tube (5) are arranged outside the outer furnace body (2), a liquid inlet pipe (6) is connected between the shunt tube (4) and each heating coil (3), a liquid outlet pipe (7) is connected between the confluence tube (5) and each heating coil (3), the shunt tube (4) and the confluence tube (5) are connected to a water circulation system, characterized in that: Each liquid inlet pipe (6) is connected to a bead adding pipe (8) for injecting steel balls into the heating coil (3); a sealing cover (9) is detachably connected to the feeding end of the bead adding pipe (8); an interception net (10) is arranged at the connection point between the liquid outlet pipe (7) and the heating coil (3); and a sewage discharge component for discharging scale and steel balls is also arranged on the outer furnace body (2).
2. The medium frequency induction furnace with a descaling and cleaning device according to claim 1, characterized in that: The sewage discharge assembly comprises a sewage collecting cylinder (11), a sewage discharge pipe (12) is connected between the sewage collecting cylinder (11) and each heating coil (3), an interception plate (20) is arranged in a vertical sliding manner relative to the connection point between the sewage collecting cylinder (11) and the sewage discharge pipe (12), and a driving unit for driving the interception plate (20) to be raised and lowered is arranged outside the sewage collecting cylinder (11).
3. The medium frequency induction furnace with a descaling and cleaning device according to claim 2, characterized in that: The driving part comprises two bearing plates (13) and a mounting rod (14). The two bearing plates (13) are arranged on the outer furnace body (2) and are distributed in an upper and lower manner. The two bearing plates (13) are provided with adjustment grooves (131) along the radial direction of the inner furnace body (1). The mounting rod (14) vertically slides through the two adjustment grooves (131) and slidably cooperates with the two adjustment grooves. A mounting ring (15) for mounting on the two bearing plates (13) is rotatably sleeved on the mounting rod (14). A plurality of magnetic blocks (16) are arranged on the mounting rod (14). One magnetic block (16) corresponds to one interception plate (20) and is magnetically attracted to the interception plate (20).
4. The medium frequency induction furnace with a descaling and cleaning device according to claim 2, characterized in that: The upper surface of the interception plate (20) is arched upward.
5. The medium frequency induction furnace with a descaling and cleaning device according to claim 3, characterized in that: The plurality of magnetic blocks (16) are arranged in two vertical rows, and two vertically adjacent magnetic blocks (16) are circumferentially staggered.
6. The medium frequency induction furnace with a descaling and cleaning device according to claim 2, characterized in that: A sealing plate (17) is vertically slidable in the dirt collecting barrel (11), and a through hole (171) is provided on the sealing plate (17) corresponding to each sewage discharge pipe (12) for connecting the sewage discharge pipe (12) with the dirt collecting barrel (11). A pull rod (18) is hingedly connected to the top of the sealing plate (17) and slides through the top wall of the dirt collecting barrel (11). A C-shaped elastic buckle (19) is arranged on the top of the dirt collecting barrel (11), and the pull rod (18) is snap-connected with the elastic buckle (19).
7. The medium frequency induction furnace with a descaling and cleaning device according to claim 1, characterized in that: A rotating rod (21) is provided on all the heating coils (3) for rotation. The rotating rod (21) is located at the connection point between the heating coils (3) and the liquid inlet pipe (6). A baffle (22) extending into the liquid inlet pipe (6) is arranged on the rotating rod (21).
8. The medium frequency induction furnace with a descaling and cleaning device according to claim 7, characterized in that: A friction block (23) is arranged on the outer side wall of the inner furnace body (1), and the rotating rod (21) rotates through the friction block (23).