Magnesium alloy electromagnetic induction heating melting furnace

Abstract

The utility model discloses a magnesium alloy electromagnetic induction heating melting furnace which comprises a supporting base fixed to the ground through bolts, left and right symmetrical installation frames are fixedly installed on the upper surface of the supporting base, a melting furnace shell is rotatably installed between the left and right installation frames, and a sealing upper cover is rotatably installed on the upper surface of the melting furnace shell. A crucible inner container used for melting a magnesium alloy material is fixedly installed in the middle of the interior of the melting furnace shell, an electromagnetic induction coil is attached to and wound around the outer surface of the crucible inner container, and a heat preservation pad is fixedly installed on the outer surface of the crucible inner container. According to the magnesium alloy electromagnetic induction heating melting furnace, the novel structural design is adopted, waste gas generated in the magnesium alloy melting process enters the purification box through the pressure relief pipe, harmful substances in the waste gas are filtered and purified through the filter cotton in the purification box, and therefore the situation that the waste gas is directly discharged to pollute the surrounding environment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of magnesium alloy melting technology, specifically to a magnesium alloy electromagnetic induction heating melting furnace. Background Technology

[0002] A magnesium alloy melting furnace is an industrial device specifically designed for melting and casting magnesium alloys. It generates heat through electromagnetic induction to melt the magnesium alloy into a liquid, which is then poured into the desired shape to meet the production needs of magnesium alloy products.

[0003] In the prior art, Chinese Patent No. CN206563488U discloses a magnesium alloy electromagnetic induction heating melting furnace, including a metal crucible and an outer shell. The furnace is characterized by an insulation layer covering the outer surface of the metal crucible, electromagnetic heating coils wound around both sides of the insulation layer, an insulation brick base at the bottom of the insulation layer, a feeding port and a discharging port at the top of the metal crucible, and a temperature probe inside the metal crucible. The insulation layer is wrapped around the outer surface of the metal crucible, and an electromagnetic heating coil is installed on the outer layer of the insulation layer. High-frequency alternating current is passed through the electromagnetic heating coil, generating an electromagnetic field around the coil. Electromagnetic energy penetrates the insulation layer and reaches the metal crucible. Under the influence of the electromagnetic field, the metal molecules inside the metal crucible collide with each other. This eliminates the need for a dedicated heating space, reducing the overall size of the equipment and minimizing energy loss. It also avoids secondary energy transfer and allows the crucible to heat itself, reducing energy loss.

[0004] Based on the above materials, the existing technology achieves the purpose of melting magnesium alloy by heating the crucible. However, in actual use, the melting of magnesium alloy will produce a certain amount of gas, which contains some harmful substances such as alloy particles. Direct emission of this gas will pollute the environment. Utility Model Content

[0005] The purpose of this invention is to provide a magnesium alloy electromagnetic induction heating melting furnace to solve the problem of environmental pollution caused by melting waste gas mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a magnesium alloy electromagnetic induction heating melting furnace, comprising a support base fixed to the ground by bolts, wherein a mounting frame symmetrically mounted on the upper surface of the support base is fixedly installed.

[0007] A melting furnace shell is rotatably mounted between the left and right mounting brackets, and a sealing cover is rotatably mounted on the upper surface of the melting furnace shell;

[0008] The inner liner of the crucible for melting magnesium alloy material is fixedly installed in the middle of the outer shell of the melting furnace. An electromagnetic induction coil is attached to and wound around the outer surface of the inner liner of the crucible, and a heat insulation pad is fixedly installed on the outer surface of the inner liner of the crucible.

[0009] A pressure relief pipe is fixedly installed on the upper surface of the melting furnace shell, and the pressure relief pipe is connected to a purification box fixedly installed on the upper surface of the support base. A delivery pump for increasing airflow pressure is provided outside the pressure relief pipe.

[0010] A stirring rod is rotatably mounted inside the lower end of the crucible liner, and the stirring rod is made entirely of high-temperature resistant ceramic material.

[0011] Preferably, rotating handles for rotating and tilting are fixedly installed on the left and right sides of the melting furnace shell, and the rotating handles are rotatably connected to the mounting frame.

[0012] Preferably, the purification box is equipped with filter cotton for filtering and purifying exhaust gas, and there are two filter cotton pieces arranged in total, one at the front and one at the back.

[0013] Preferably, a reduction gear for driving the stirring rod to rotate is coaxially fixedly installed at the lower end of the stirring rod, and the reduction gear is located outside the outer shell of the melting furnace, and the reduction gear is meshed with the driving gear.

[0014] Preferably, the drive gear is rotatably connected to the purification box, and a drive blade is coaxially fixedly installed at the lower end of the drive gear.

[0015] Preferably, the drive blade is located inside the purification chamber, and the purification chamber corresponds to the outlet position of the pressure relief pipe.

[0016] Preferably, a water storage tank is fixedly installed on the external side of the mounting frame, and the water storage tank is connected to the purification box through a connecting pipe, and staggered baffles are fixedly installed inside the water storage tank.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This magnesium alloy electromagnetic induction heating melting furnace adopts a novel structural design, the specific details of which are as follows:

[0018] 1. After placing the magnesium alloy into the inner liner of the crucible, heat is generated by the electromagnetic induction phenomenon of the electromagnetic induction coil to heat and melt the magnesium alloy. After the magnesium alloy is melted, the outer shell of the melting furnace is tilted by turning the handle to pour out the liquid magnesium alloy.

[0019] Furthermore, the waste gas generated during the melting of magnesium alloy enters the purification chamber through the pressure relief pipe. The filter cotton in the purification chamber filters and purifies the harmful substances in the waste gas, thereby preventing the waste gas from being directly discharged and polluting the surrounding environment.

[0020] Furthermore, the purified exhaust gas is transported to a water storage tank through a connecting pipe, where the residual heat of the exhaust gas is used to heat the water in the tank. At the same time, the baffle in the water storage tank can slow down the gas flow rate and improve the heating effect. The heated water can then be used for cleaning the inside of the device.

[0021] 2. During the gas delivery process, the pressure relief pipe uses a delivery pump to increase the flow rate, which in turn drives the drive blades inside the purification chamber to rotate under the action of the airflow. This causes the drive blades to drive the drive gear to rotate, and under the drive of the drive gear, the reduction gear meshing with it drives the stirring rod to rotate (the gear ratio between the drive gear and the reduction gear can increase the torque, making the drive more effortless). This allows the stirring rod to stir the magnesium alloy during the melting process, resulting in more uniform heating. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the melting furnace of this utility model;

[0024] Figure 3 This is a schematic diagram of the mounting position of the reduction gear of this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the crucible liner of this utility model;

[0026] Figure 5 This is a schematic diagram of the meshing relationship between the driving gear and the reduction gear of this utility model;

[0027] Figure 6 This is a schematic diagram of the internal structure of the purification box of this utility model;

[0028] Figure 7 This is a schematic diagram of the internal structure of the water storage tank of this utility model.

[0029] In the diagram: 1. Support base; 2. Mounting bracket; 3. Melting furnace outer shell; 4. Sealed top cover; 5. Crucible inner liner; 6. Electromagnetic induction coil; 7. Insulation pad; 8. Pressure relief pipe; 801. Transfer pump; 9. Purification box; 10. Filter cotton; 11. Rotating handle; 12. Stirring rod; 13. Reduction gear; 14. Drive gear; 15. Drive blade; 16. Water storage tank; 17. Connecting pipe; 18. Baffle plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1: Please refer to Figures 1-3 In order to achieve the purpose of melting magnesium alloy, this embodiment provides the following technical solution, which specifically discloses: a support base 1 fixed to the ground by bolts, a symmetrical mounting bracket 2 fixedly installed on the upper surface of the support base 1, a melting furnace shell 3 rotatably installed between the left and right mounting brackets 2, a sealing cover 4 rotatably installed on the upper surface of the melting furnace shell 3, a crucible liner 5 for melting magnesium alloy material fixedly installed in the middle position inside the melting furnace shell 3, an electromagnetic induction coil 6 is attached and wound on the outer surface of the crucible liner 5, and a heat insulation pad 7 is fixedly installed on the outer surface of the crucible liner 5. Rotating handles 11 for rotating and tilting are fixedly installed on the left and right sides of the melting furnace shell 3, and the rotating handles 11 are rotatably connected to the mounting brackets 2.

[0032] When using the device, first open the sealed top cover 4 and put the magnesium alloy raw material to be melted into the crucible liner 5 inside the melting furnace shell 3. Then turn on the power and use the electromagnetic induction phenomenon of the electromagnetic induction coil 6 to generate heat to melt the magnesium alloy. During this process, the heat insulation pad 7 is used to reduce heat loss. After melting is completed, the operator rotates the handle 11 to rotate the melting furnace shell 3 to tilt it, thereby pouring out the internal magnesium alloy liquid.

[0033] Example 2: Please refer to Figure 1 and Figure 6 In order to achieve the purpose of purifying the waste gas generated during the melting of magnesium alloy, this embodiment provides the following technical solution, which specifically discloses: a pressure relief pipe 8 is fixedly installed on the upper surface of the melting furnace shell 3, and the pressure relief pipe 8 is connected to the purification box 9 fixedly installed on the upper surface of the support base 1. A delivery pump 801 for increasing the airflow pressure is provided outside the pressure relief pipe 8. A filter cotton 10 for filtering and purifying the waste gas is fixedly installed inside the purification box 9, and two filter cotton 10s are arranged in the front and back. A water storage tank 16 is fixedly installed on the outside of the side of the mounting frame 2, and the water storage tank 16 is connected to the purification box 9 through a connecting pipe 17. A staggered baffle plate 18 is fixedly installed inside the water storage tank 16.

[0034] The waste gas generated during the melting process is transported to the purification box 9 through the pressure relief pipe 8 to maintain the internal pressure of the device. The waste gas entering the purification box 9 is filtered by the filter cotton 10 to remove harmful substances. The filtered gas enters the water storage tank 16 through the connecting pipe 17. The residual heat of the gas is used to heat the water in the water storage tank 16 (during this process, the baffle plate 18 is used to slow down the gas flow speed to achieve a better heating effect). The heated water in the water storage tank 16 can then be used to clean the inner liner 5 of the crucible.

[0035] Example 3: Please refer to Figures 4-7 In order to achieve the purpose of stirring the magnesium alloy during the melting process, this embodiment provides the following technical solution, which specifically discloses: A stirring rod 12 is rotatably installed at the lower end of the inner liner 5 of the crucible, and the stirring rod 12 is made of high temperature resistant ceramic material. A reduction gear 13 for driving its rotation is coaxially fixedly installed at the lower end of the stirring rod 12. The reduction gear 13 is located below the outer surface of the melting furnace shell 3, and the reduction gear 13 is meshed with the driving gear 14. The driving gear 14 is rotatably connected to the purification box 9, and a drive blade 15 is coaxially fixedly installed at the lower end of the driving gear 14. The drive blade 15 is located inside the purification box 9, and the outlet position of the purification box 9 corresponds to that of the pressure relief pipe 8.

[0036] When the exhaust gas passes through the pressure relief pipe 8, the flow rate is accelerated by the delivery pump 801. The gas flow drives the drive blade 15 in the purification box 9 to rotate. The drive blade 15 drives the drive gear 14 to rotate, which in turn drives the reduction gear 13, which meshes with the drive gear 14, to rotate the stirring rod 12 (the gear ratio between the drive gear 14 and the reduction gear 13 increases the torque). The rotation of the stirring rod 12 stirs the molten magnesium alloy in the crucible liner 5, making it more evenly heated.

[0037] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnesium alloy electromagnetic induction heating melting furnace, comprising a support base (1) fixed to the ground by bolts, wherein symmetrical mounting brackets (2) are fixedly installed on the upper surface of the support base (1), characterized in that: A melting furnace shell (3) is rotatably mounted between the left and right mounting brackets (2), and a sealing cover (4) is rotatably mounted on the upper surface of the melting furnace shell (3); The inner liner of the melting furnace shell (3) is fixedly installed in the middle position inside, and an electromagnetic induction coil (6) is attached to and wound around the outer surface of the inner liner of the melting furnace (5). A heat insulation pad (7) is fixedly installed on the outer surface of the inner liner of the melting furnace (5). A pressure relief pipe (8) is fixedly installed on the upper surface of the furnace shell (3), and the pressure relief pipe (8) is connected to the purification box (9) fixedly installed on the upper surface of the support base (1). A delivery pump (801) for increasing the airflow pressure is provided outside the pressure relief pipe (8). A stirring rod (12) is rotatably installed at the lower end of the inner liner (5) of the crucible, and the stirring rod (12) is made of high-temperature resistant ceramic material.

2. The magnesium alloy electromagnetic induction heating melting furnace according to claim 1, characterized in that: The melting furnace shell (3) is fixedly installed with rotating handles (11) on the left and right sides for rotating and tilting it, and the rotating handles (11) are rotatably connected to the mounting frame (2).

3. The magnesium alloy electromagnetic induction heating melting furnace according to claim 1, characterized in that: The purification box (9) is fixedly installed with filter cotton (10) for filtering and purifying exhaust gas, and there are two pieces of filter cotton (10) in total, one in front and one in back.

4. The magnesium alloy electromagnetic induction heating melting furnace according to claim 1, characterized in that: The lower end of the stirring rod (12) is coaxially fixed with a reduction gear (13) for driving its rotation, and the reduction gear (13) is located outside the outer shell (3) of the melting furnace, and the reduction gear (13) is meshed with the driving gear (14).

5. A magnesium alloy electromagnetic induction heating melting furnace according to claim 4, characterized in that: The drive gear (14) is rotatably connected to the purification box (9), and a drive blade (15) is coaxially fixedly installed at the lower end of the drive gear (14).

6. A magnesium alloy electromagnetic induction heating melting furnace according to claim 5, characterized in that: The drive blade (15) is located inside the purification box (9), and the outlet position of the purification box (9) corresponds to that of the pressure relief pipe (8).

7. A magnesium alloy electromagnetic induction heating melting furnace according to claim 6, characterized in that: A water storage tank (16) is fixedly installed on the outside of the side of the mounting bracket (2), and the water storage tank (16) is connected to the purification box (9) through a connecting pipe (17) connected thereto, and staggered baffles (18) are fixedly installed inside the water storage tank (16).

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