Casting medium-frequency induction holding furnace
By designing a protective device in the medium-frequency induction heating furnace and using a servo motor to control the cover plate to seal the top of the furnace body, the smoke and dust are guided into the treatment equipment, thus solving the problem of smoke and dust pollution and achieving greater practicality and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG CTI HEAVY IND CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-12
AI Technical Summary
In the process of metal smelting, if the furnace charge contains moisture and impurities or when smelting easily oxidized metals, the medium-frequency induction holding furnace will generate a large amount of smoke and dust, which will pollute the environment and endanger health, resulting in a decline in practicality and environmental friendliness.
A casting medium-frequency induction holding furnace was designed, equipped with protective devices including a cover plate, a mesh plate, and a sliding plate. The cover plate is controlled by a servo motor to close the furnace body, and the flue gas enters the flue gas treatment equipment through the mesh plate to prevent flue gas leakage.
Effective collection and treatment of smoke and dust enhances the practicality and environmental friendliness of medium-frequency induction heating furnaces, prevents smoke and dust pollution, and protects the health of operators.
Smart Images
Figure CN224230667U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medium-frequency induction holding furnace technology, and in particular to a casting medium-frequency induction holding furnace. Background Technology
[0002] A casting medium-frequency induction holding furnace is a device used for metal melting and heat preservation. The holding furnace utilizes the principle of medium-frequency induction heating, which generates an alternating magnetic field through an induction coil to induce current inside the metal charge, thereby achieving heating and heat preservation.
[0003] When using a medium-frequency induction holding furnace for metal smelting, if the furnace charge contains a lot of moisture and impurities, or when smelting metals that are easily oxidized or produce volatile substances, a large amount of smoke and dust will be generated. For example, when smelting copper alloys, copper and other alloying elements may oxidize to generate oxide dust. After the smoke and dust enter the processing environment, it will pollute the environment and endanger the health of the operators, leading to a decrease in the practicality and environmental friendliness of the medium-frequency induction holding furnace. Utility Model Content
[0004] The purpose of this invention is to solve the problem that when using a medium-frequency induction holding furnace for metal smelting, if the furnace charge contains a lot of moisture and impurities, or when smelting some metals that are easily oxidized or produce volatile substances, a large amount of smoke and dust will be generated. For example, when smelting copper alloys, copper and other alloying elements may oxidize to generate oxide dust. After the smoke and dust enter the processing environment, it will pollute the environment and endanger the health of the operators, resulting in a decrease in the practicality and environmental friendliness of the medium-frequency induction holding furnace. Therefore, this invention proposes a casting medium-frequency induction holding furnace.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a casting medium-frequency induction holding furnace, comprising a frame, a top plate rotatably connected to the top of the frame via a rotating shaft, a furnace body fixedly connected to one side of the top plate, hydraulic rods rotatably mounted on both sides of the frame, the output rods of the two hydraulic rods being rotatably connected to the bottom sides of the top plate, and a protective device provided at the top of the top plate to block the fumes generated during the metal smelting process.
[0006] The effect achieved by the above components is as follows: When using the medium-frequency induction holding furnace, the holding furnace is connected to the power supply, and the molten metal is poured into the furnace body. An alternating magnetic field is generated by the induction coil installed on the surface of the furnace body, which induces a current inside the furnace body to heat and hold the molten metal. After heating is completed, the two hydraulic rods on both sides of the frame are controlled to extend, pushing the top plate to rotate at the top of the frame. At the same time, the two ends of the hydraulic rods will rotate on one side of the frame and one side of the top plate, respectively, causing the top plate and the furnace body to tilt and pour out the molten metal inside the furnace body.
[0007] Preferably, the protective device includes a shaft, a cover plate fixedly connected to the top end of the shaft, an output pipe fixedly connected to the top end of the cover plate, a mesh plate fixedly connected to the bottom end of the inner wall of the cover plate, a sliding plate slidably connected to the inner wall of the mesh plate, and several through holes on the outer surfaces of both the mesh plate and the sliding plate. A sliding rod is fixedly connected to one side of the sliding plate, a sliding groove is formed on one side of the inner wall of the cover plate, the sliding rod slides on the inner wall of the sliding groove, an electric push rod is provided on one side of the top end of the cover plate, the output rod of the electric push rod is fixedly connected to the end of the sliding rod away from the sliding plate, a servo motor is provided on one side of the top plate, and the output end of the servo motor is connected to the bottom end of the shaft through a coupling.
[0008] The effect achieved by the above-mentioned components is as follows: By setting the cover plate, when using a medium-frequency induction holding furnace, the flue gas receiving pipe of the dust collection equipment such as the bag filter can be connected to the output pipe at the top of the cover plate. When the molten metal is poured into the furnace body for smelting, if dust is generated inside the furnace body, the servo motor can be operated to control the shaft to rotate slightly, causing the cover plate to rotate to the top of the furnace body and seal the top of the furnace body. Due to thermal convection and air density differences, the dust will move upward and enter through the through holes on the outer surface of the mesh plate and sliding plate. Inside the cover plate, the molten metal enters the fume treatment equipment through the output pipe at the top of the cover plate. When it is necessary to pour out the molten metal inside the furnace, the electric push rod at the top of the cover plate controls the slide rod to move towards the sliding plate on the inner wall of the slide groove, so that the sliding plate moves the maximum distance inside the mesh plate. At this time, the through holes on the outer surface of the mesh plate and the sliding plate are staggered, which will close the bottom of the cover plate. Then, the servo motor controls the shaft to drive the cover plate to rotate away from the top of the furnace body, opening the top of the furnace body, so that the molten metal inside the cover plate will not escape from the inside of the cover plate.
[0009] Preferably, the width of the bottom end of the inner wall of the through hole on the surface of the mesh is greater than the width of the top end of the inner wall.
[0010] The effect achieved by the above components is that by setting the bottom width of the inner wall of the through hole on the surface of the mesh plate to be greater than the top width of the inner wall, the smoke and dust can enter the inside of the cover plate more quickly through the bottom of the through hole on the surface of the mesh plate.
[0011] Preferably, a baffle is fixedly connected to one side of the slide bar, and the length of the baffle is greater than the length of the top of the slide groove.
[0012] The effect achieved by the above components is that when the slide rod is moved by operating the electric push rod, the baffle will slide at the top of the cover plate. The baffle can seal the top of the slide groove, and prevent the flue gas from leaking out through the slide groove as much as possible.
[0013] Preferably, a sealing ring is fixedly connected to the bottom end of the cover plate. The sealing ring is made of high-temperature resistant rubber and is located at the bottom edge of the cover plate.
[0014] The effect achieved by the above components is that by setting a sealing ring made of high-temperature resistant rubber, the outer side of the contact point between the bottom of the cover plate and the top of the furnace body can be further sealed, so as to avoid smoke and dust leakage when the cover plate covers the top of the furnace body as much as possible.
[0015] Preferably, the outer surface of the cover plate is provided with an auxiliary device, the auxiliary device including a ring that rotates on the outer surface of the cover plate, an L-shaped rod fixedly connected to one side of the ring, a round rod slidably connected to one end of the inner wall of the L-shaped rod, a striking block fixedly connected to one end of the round rod, a spring provided on one side of the striking block, and the two ends of the spring being fixedly connected to one side of the striking block and one side of the L-shaped rod, respectively.
[0016] The effect achieved by the above components is as follows: when the medium-frequency induction heating furnace is not in use and the cover plate is not located above the top of the furnace body, the round rod can be pulled at the L-shaped rod on one side of the ring to move away from the L-shaped rod to compress the spring. Then, the round rod is released and the spring returns to its original shape, pushing the striking block to strike the outer surface of the cover plate, causing the dust particles attached to the inner wall of the cover plate to fall off. Pushing the ring to rotate can adjust the position of the striking block, making it easier to clean the inside of the cover plate.
[0017] Preferably, the diameter of the round rod is smaller than the inner diameter of the spring, and the spring is sleeved on the outside of the round rod.
[0018] The effect achieved by the above components is that when the round rod is pulled to control the movement of the striking block and the spring is deformed, the round rod can reinforce the internal shape of the spring and prevent the spring from twisting.
[0019] Preferably, a groove block is fixedly connected to the end of the round rod away from the striking block, and the groove block has grooves on both sides.
[0020] The effect achieved by the above components is that by pinching the grooves on both sides of the slot block, it is easier to pull the slot block to control the movement of the round rod and the striking block, and it is less likely to slip.
[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0022] In this invention, by setting up a protective device, when using the medium-frequency induction heating furnace, the flue gas receiving pipe of the dust treatment and equipment is connected to the output pipe at the top of the cover plate. If dust is generated inside the furnace, the servo motor can be operated to control the cover plate to move to the top of the furnace and close the furnace, allowing the dust to enter the cover plate and be transported to the dust treatment equipment for processing. When the cover plate is away from the top of the furnace, the bottom of the cover plate is closed, thus minimizing the entry of dust generated during processing into the processing environment and improving the practicality and environmental friendliness of the medium-frequency induction heating furnace. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0024] Figure 2 This is a three-dimensional structural diagram of the frame of this utility model;
[0025] Figure 3 This is a three-dimensional structural diagram of the cover plate of this utility model;
[0026] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the cover plate of this utility model;
[0027] Figure 5 This utility model Figure 4 A magnified three-dimensional structural diagram of point A.
[0028] Legend: 1. Frame; 2. Protective device; 3. Auxiliary device; 4. Top plate; 5. Furnace body; 6. Hydraulic rod; 21. Servo motor; 22. Shaft; 23. Cover plate; 24. Output pipe; 25. Mesh plate; 26. Sliding plate; 27. Slide groove; 28. Slide rod; 29. Electric push rod; 210. Baffle plate; 211. Sealing ring; 31. Circular ring; 32. L-shaped rod; 33. Round rod; 34. Striking block; 35. Spring; 36. Groove block. Detailed Implementation
[0029] Example 1, such as Figure 1-2 As shown, a casting medium-frequency induction holding furnace includes a frame 1. A top plate 4 is rotatably connected to the top of the frame 1 via a rotating shaft. A furnace body 5 is fixedly connected to one side of the top plate 4. Hydraulic rods 6 are rotatably installed on both sides of the frame 1. The output rods of the two hydraulic rods 6 are rotatably connected to the bottom sides of the top plate 4. A protective device 2 is installed at the top of the top plate 4 to block the fumes generated during the metal smelting process. When using the medium-frequency induction holding furnace, the furnace is connected to a power source, and molten metal is poured into the furnace body 5. An alternating magnetic field is generated by an induction coil installed on the surface of the furnace body 5, which induces a current inside the furnace body 5 to heat and hold the molten metal. After heating, the two hydraulic rods 6 on both sides of the frame 1 are controlled to extend, pushing the top plate 4 to rotate at the top of the frame 1. At the same time, the two ends of the hydraulic rods 6 rotate on one side of the frame 1 and one side of the top plate 4, respectively, causing the top plate 4 and the furnace body 5 to tilt and pour out the molten metal inside the furnace body 5.
[0030] Reference Figure 1-5As shown in this embodiment: the protective device 2 includes a shaft 22, a cover plate 23 is fixedly connected to the top of the shaft 22, an output pipe 24 is fixedly connected to the top of the cover plate 23, a mesh plate 25 is fixedly connected to the bottom of the inner wall of the cover plate 23, a sliding plate 26 is slidably connected to the inner wall of the mesh plate 25, and several through holes are opened on the outer surfaces of both the mesh plate 25 and the sliding plate 26. A sliding rod 28 is fixedly connected to one side of the sliding plate 26, a sliding groove 27 is opened on one side of the inner wall of the cover plate 23, the sliding rod 28 slides on the inner wall of the sliding groove 27, and an electric push rod 29 is provided on one side of the top of the cover plate 23. The output rod of the electric push rod 29 and the sliding rod 28 are away from the sliding plate 24. One end of 6 is fixedly connected, and a servo motor 21 is provided on one side of the top plate 4. The output end of the servo motor 21 is connected to the bottom end of the shaft 22 through a coupling. By setting the cover plate 23, when using the medium frequency induction holding furnace, the flue gas receiving pipe of the dust treatment equipment such as the bag filter can be connected to the output pipe 24 at the top of the cover plate 23. When the molten metal is poured into the furnace body 5 for smelting, if dust is generated inside the furnace body 5, the servo motor 21 can be operated to control the shaft 22 to rotate slightly, so that the cover plate 23 rotates to the top of the furnace body 5, sealing the top of the furnace body 5. Due to heat convection and air density difference, the dust will move upward. The molten metal enters the cover plate 23 through the through holes on the outer surfaces of the mesh plate 25 and the sliding plate 26, and then enters the fume treatment equipment through the output pipe 24 at the top of the cover plate 23. When it is necessary to pour out the molten metal inside the furnace body 5, the electric push rod 29 at the top of the cover plate 23 controls the sliding rod 28 to move towards the sliding plate 26 on the inner wall of the slide groove 27, so that the sliding plate 26 moves the maximum distance inside the mesh plate 25. At this time, the through holes on the outer surfaces of the mesh plate 25 and the sliding plate 26 are misaligned, which will close the bottom of the cover plate 23. Then, the servo motor 21 controls the shaft 22 to drive the cover plate 23 to rotate away from the top of the furnace body 5, thus opening the top of the furnace body 5. This prevents the smoke and dust inside the cover plate 23 from escaping. By setting up the protective device 2, when using the medium-frequency induction holding furnace, the flue gas receiving pipeline of the dust treatment and equipment is connected to the output pipe 24 at the top of the cover plate 23. If smoke and dust are generated inside the furnace body 5, the servo motor 21 can be operated to control the cover plate 23 to move to the top of the furnace body 5 to close the furnace body 5, allowing the smoke and dust to enter the cover plate 23 and be transported to the dust treatment equipment for treatment. When the cover plate 23 is away from the top of the furnace body 5, the bottom of the cover plate 23 is closed, minimizing the entry of smoke and dust generated during processing into the processing environment and improving the practicality and environmental friendliness of the medium-frequency induction holding furnace.
[0031] Reference Figure 2-5As shown in this embodiment: the bottom width of the inner wall of the through hole on the surface of the mesh plate 25 is greater than the top width of the inner wall. By setting the bottom width of the inner wall of the through hole on the surface of the mesh plate 25 to be greater than the top width of the inner wall, the smoke and dust can enter the interior of the cover plate 23 more quickly through the bottom of the through hole on the surface of the mesh plate 25. A baffle plate 210 is fixedly connected to one side of the slide rod 28. The length of the baffle plate 210 is greater than the top length of the slide groove 27. When the slide rod 28 is moved by operating the electric push rod 29, the baffle plate 210 will slide at the top of the cover plate 23. The baffle plate 210 can seal the top of the slide groove 27, and prevent the smoke and gas from leaking out through the slide groove 27 as much as possible.
[0032] Reference Figure 2-5 As shown in this embodiment: a sealing ring 211 is fixedly connected to the bottom end of the cover plate 23. The sealing ring 211 is made of high temperature resistant rubber and is located at the bottom edge of the cover plate 23. By setting the sealing ring 211 made of high temperature resistant rubber, the outer side of the contact between the bottom end of the cover plate 23 and the top end of the furnace body 5 can be further sealed, so as to avoid smoke and dust leakage when the cover plate 23 covers the top end of the furnace body 5 as much as possible.
[0033] Reference Figure 1-4 As shown in this embodiment: an auxiliary device 3 is provided on the outer surface of the cover plate 23. The auxiliary device 3 includes a ring 31, which rotates on the outer surface of the cover plate 23. An L-shaped rod 32 is fixedly connected to one side of the ring 31. A round rod 33 is slidably connected to one end of the inner wall of the L-shaped rod 32. A striking block 34 is fixedly connected to one end of the round rod 33. A spring 35 is provided on one side of the striking block 34. The two ends of the spring 35 are fixedly connected to one side of the striking block 34 and one side of the L-shaped rod 32, respectively. When the medium-frequency induction heating furnace is not in use and the cover plate 23 is not above the top of the furnace body 5, the round rod 33 can be pulled away from the L-shaped rod 32 on one side of the ring 31 to compress the spring 35. Then, the round rod 33 can be released and the spring 35 will restore the original state. Pushing the striking block 34 to strike the outer surface of the cover plate 23 causes the dust particles attached to the inner wall of the cover plate 23 to fall off. Pushing the ring 31 to rotate can adjust the position of the striking block 34, making it easier to clean the inside of the cover plate 23. The diameter of the round rod 33 is smaller than the inner diameter of the spring 35. The spring 35 is sleeved on the outside of the round rod 33. Pulling the round rod 33 to control the movement of the striking block 34 causes the spring 35 to deform. The round rod 33 can reinforce the internal shape of the spring 35 to prevent the spring 35 from twisting. The end of the round rod 33 away from the striking block 34 is fixedly connected to the groove block 36. The groove block 36 has grooves on both sides. Pinching the grooves on both sides of the groove block 36 makes it easier to pull the groove block 36 to control the movement of the round rod 33 and the striking block 34 and prevents the hand from slipping.
[0034] Working principle: When using the medium-frequency induction holding furnace, first connect the flue gas receiving pipe of the bag filter dust collector and other dust treatment equipment to the output pipe 24 at the top of the cover plate 23. Then connect the holding furnace to the power supply and pour the molten metal into the furnace body 5. The alternating magnetic field generated by the induction coil installed on the surface of the furnace body 5 induces a current inside the furnace body 5, which heats and holds the molten metal. If dust is generated inside the furnace body 5 during smelting, the servo motor 21 controls the shaft 22 to rotate slightly, causing the cover plate 23 to rotate to the top of the furnace body 5. The top of the furnace body 5 is sealed. Due to thermal convection and air density differences, the molten metal rises and enters the cover plate 23 through the through holes on the outer surfaces of the mesh plate 25 and the sliding plate 26. It then enters the dust treatment equipment through the output pipe 24 at the top of the cover plate 23. When the molten metal inside the furnace body 5 needs to be poured out after heating, the electric push rod 29 at the top of the cover plate 23 controls the slide rod 28 to move towards the sliding plate 26 on the inner wall of the slide groove 27, so that the sliding plate 26 moves the maximum distance inside the mesh plate 25. At this time, the mesh plate 25 and the... The through holes on the outer surface of the sliding plate 26 are staggered, which closes the bottom of the cover plate 23. Then, the servo motor 21 controls the shaft 22 to rotate the cover plate 23 away from the top of the furnace body 5, opening the top of the furnace body 5 and preventing the smoke and dust inside the cover plate 23 from escaping. The two hydraulic rods 6 on both sides of the frame 1 extend, pushing the top plate 4 to rotate at the top of the frame 1. At the same time, the two ends of the hydraulic rods 6 rotate on one side of the frame 1 and one side of the top plate 4, respectively, causing the top plate 4 and the furnace body 5 to tilt. When the molten metal inside the furnace body 5 is poured out, and the medium-frequency induction heating furnace is not in use and the cover plate 23 is not above the top of the furnace body 5, the round rod 33 can be pulled away from the L-shaped rod 32 on one side of the ring 31 to move the spring 35 away from the L-shaped rod 32. Then, the round rod 33 is released and the spring 35 returns to its original shape, pushing the striking block 34 to strike the outer surface of the cover plate 23, causing the dust particles attached to the inner wall of the cover plate 23 to fall off. The position of the striking block 34 can be adjusted by pushing the ring 31 to rotate, which makes it easier to clean the inside of the cover plate 23.
[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.
Claims
1. A casting medium-frequency induction holding furnace, comprising a frame (1), characterized in that: The top of the frame (1) is rotatably connected to a top plate (4) via a rotating shaft. A furnace body (5) is fixedly connected to one side of the top plate (4). Hydraulic rods (6) are rotatably installed on both sides of the frame (1). The output rods of the two hydraulic rods (6) are rotatably connected to the bottom sides of the top plate (4). A protective device (2) is installed at the top of the top plate (4) to block the smoke and dust generated during the metal smelting process.
2. The casting medium-frequency induction holding furnace according to claim 1, characterized in that: The protective device (2) includes a shaft (22), a cover plate (23) is fixedly connected to the top of the shaft (22), an output pipe (24) is fixedly connected to the top of the cover plate (23), a mesh plate (25) is fixedly connected to the bottom of the inner wall of the cover plate (23), a sliding plate (26) is slidably connected to the inner wall of the mesh plate (25), and several through holes are opened on the outer surfaces of both the mesh plate (25) and the sliding plate (26). A sliding rod is fixedly connected to one side of the sliding plate (26). 28), a sliding groove (27) is provided on one side of the inner wall of the cover plate (23), and the sliding rod (28) slides on the inner wall of the sliding groove (27). An electric push rod (29) is provided on one side of the top of the cover plate (23). The output rod of the electric push rod (29) is fixedly connected to the end of the sliding rod (28) away from the sliding plate (26). A servo motor (21) is provided on one side of the top plate (4). The output end of the servo motor (21) is connected to the bottom end of the shaft (22) through a coupling.
3. A casting medium-frequency induction holding furnace according to claim 2, characterized in that: The bottom width of the inner wall of the through hole on the surface of the mesh plate (25) is greater than the top width of the inner wall.
4. A casting medium-frequency induction holding furnace according to claim 3, characterized in that: A baffle plate (210) is fixedly connected to one side of the slide bar (28), and the length of the baffle plate (210) is greater than the length of the top end of the slide groove (27).
5. A casting medium-frequency induction holding furnace according to claim 4, characterized in that: A sealing ring (211) is fixedly connected to the bottom end of the cover plate (23). The sealing ring (211) is made of high temperature resistant rubber and is located at the bottom edge of the cover plate (23).
6. A casting medium-frequency induction holding furnace according to claim 5, characterized in that: An auxiliary device (3) is provided on the outer surface of the cover plate (23). The auxiliary device (3) includes a ring (31) that rotates on the outer surface of the cover plate (23). An L-shaped rod (32) is fixedly connected to one side of the ring (31). A round rod (33) is slidably connected to one end of the inner wall of the L-shaped rod (32). A striking block (34) is fixedly connected to one end of the round rod (33). A spring (35) is provided on one side of the striking block (34). The two ends of the spring (35) are fixedly connected to one side of the striking block (34) and one side of the L-shaped rod (32), respectively.
7. A casting medium-frequency induction holding furnace according to claim 6, characterized in that: The diameter of the round rod (33) is smaller than the inner diameter of the spring (35), and the spring (35) is sleeved on the outside of the round rod (33).
8. A casting medium-frequency induction holding furnace according to claim 7, characterized in that: The end of the round rod (33) away from the striking block (34) is fixedly connected to a groove block (36), and grooves are provided on both sides of the groove block (36).