A melting apparatus for casting a copper alloy

Abstract

The utility model relates to metal casting technical field, concretely discloses a kind of smelting device of cast copper alloy, including U-shaped seat and furnace body, the outer wall of furnace body is fixedly connected with two rotationally connected shafts with U-shaped seat, the outer wall of two The shafts are fixedly connected with carousel, the outer wall of U-shaped seat is provided with discharge mechanism, the inside of furnace body is provided with stirring mechanism, the upper end surface of furnace body is provided with furnace cover, the inside of furnace cover is provided with air cavity, the lower end surface of furnace cover is provided with multiple evenly distributed and with air cavity communication air hole, the upper end surface of furnace cover is installed with the air pump of outlet port and air cavity communication, the air inlet of air pump imports inert gas;Efficient mixing of melt is realized by the bidirectional differential stirring mechanism driven by bevel gear set, cooperate the inert gas protection system of furnace cover air cavity and tiltable discharge mechanism, while improving alloy uniformity, effectively control oxidation, realize the integrated smelting production of high-quality copper alloy castings.

Description

Technical Field

[0001] This utility model relates to the field of metal casting technology, and specifically discloses a melting device for casting copper alloys. Background Technology

[0002] Casting is one of the earliest metal heat treatment processes mastered by mankind. It involves pouring liquid metal into a casting cavity that conforms to the shape of the part, and then cooling and solidifying it to obtain the part or blank. Copper alloys are alloys made by adding one or more other alloying elements to pure copper as the base. Depending on the application requirements, different types and proportions of alloys can be added for smelting. Therefore, to realize the casting production of copper alloys, it is necessary to use a smelting device to smelt the raw materials.

[0003] Currently, copper alloy casting melting equipment commonly suffers from uneven stirring, leading to component segregation and severe oxidation. Traditional melting equipment often employs single-shaft, unidirectional stirring, which is insufficient to effectively break up the sedimentation and stratification of high-density alloying elements, resulting in uneven component distribution within the melt and affecting the mechanical properties and forming quality of the final casting. Furthermore, existing equipment cannot effectively isolate the melt from air, causing significant metal oxidation and loss. Moreover, most melting furnaces rely on manual operation or simple tilting mechanisms, resulting in unstable pouring flow rates that fail to meet the process stability requirements of precision casting. Therefore, a new copper alloy casting melting device is needed to address these issues. Utility Model Content

[0004] This invention proposes a smelting device for casting copper alloys. It achieves efficient mixing of the melt through a bidirectional differential stirring mechanism driven by a bevel gear set. Combined with an inert gas protection system in the furnace cover gas chamber and a tiltable discharge mechanism, it effectively controls oxidation while improving alloy uniformity, thus realizing the integrated smelting and production of high-quality copper alloy castings.

[0005] This utility model is implemented as follows: a smelting device for casting copper alloys includes a U-shaped base and a furnace body. Two rotating shafts that are rotatably connected to the U-shaped base are fixedly connected to the outer wall of the furnace body. Turntables are fixedly connected to the outer walls of the two rotating shafts that are opposite to each other. A discharge mechanism is provided on the outer wall of the U-shaped base. A stirring mechanism is provided inside the furnace body. A furnace cover is provided on the upper end face of the furnace body. A gas chamber is provided inside the furnace cover. Multiple evenly distributed gas holes communicating with the gas chamber are opened on the lower end face of the furnace cover. An air pump with an outlet communicating with the gas chamber is installed on the upper end face of the furnace cover. Inert gas is introduced into the air inlet of the air pump.

[0006] The stirring mechanism includes a bracket fixedly connected to the lower end face of the furnace body. A drive motor is installed on the outer wall of the bracket. A third bevel gear is fixedly connected to the output end of the drive motor. A sleeve is rotatably connected through the lower end face of the furnace body. A stirring shaft is rotatably connected to the inner wall of the sleeve. Stirring paddles are fixedly connected to the outer walls of both the sleeve and the stirring shaft. A first bevel gear and a second bevel gear, which mesh with the third bevel gear, are fixedly connected to the outer walls of the stirring shaft and the sleeve, respectively.

[0007] As a preferred embodiment of the casting copper alloy smelting device of this utility model, the discharge mechanism includes two support plates fixedly connected to the outer wall of the U-shaped seat, and a threaded rod rotatably connected between the two support plates. A servo motor with its output end fixedly connected to the threaded rod is installed on the outer wall of one of the support plates. Movable blocks are threadedly connected to both ends of the outer wall of the threaded rod, and connecting rods are rotatably connected to the outer walls of both movable blocks. The other ends of both connecting rods are rotatably connected to the turntable.

[0008] As a preferred embodiment of the casting copper alloy smelting apparatus of this utility model, two electric push rods are installed on the outer wall of the furnace body through ear plates, and the output ends of the two electric push rods are fixedly connected to the furnace cover through ear plates.

[0009] As a preferred embodiment of the smelting apparatus for casting copper alloys according to this utility model, the furnace body includes a refractory layer and an insulation layer, and an electromagnetic coil is provided between the refractory layer and the insulation layer.

[0010] In a preferred embodiment of the casting copper alloy smelting apparatus of this utility model, the threads at both ends of the outer wall of the threaded rod are in opposite directions.

[0011] In a preferred embodiment of the casting copper alloy smelting apparatus of this utility model, the outer wall of the U-shaped base is provided with a controller, and the electromagnetic coil, drive motor, electric push rod and servo motor are all electrically connected to the controller.

[0012] The beneficial effects of this utility model are:

[0013] 1. The bevel gear set can drive the sleeve and the stirring shaft to rotate in opposite directions to generate a composite vortex, which significantly improves the mixing uniformity of the molten metal and effectively solves the problem of uneven distribution of alloying elements in the traditional smelting process.

[0014] 2. The inert gas protection system of the equipment achieves surface protection of the molten metal through the gas chamber inside the furnace cover and evenly distributed gas holes. Combined with the tilting discharge mechanism, it enables precise casting, improving production efficiency while ensuring casting quality. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is an overall structural diagram of a smelting apparatus for casting copper alloys according to the present invention.

[0017] Figure 2 This is a front sectional view of a smelting apparatus for casting copper alloys according to the present invention.

[0018] Figure 3 This is a right view of a smelting apparatus for casting copper alloys according to the present invention.

[0019] The markings in the diagram are: 1. U-shaped base; 2. Furnace body; 201. Refractory layer; 202. Insulation layer; 203. Electromagnetic coil; 3. Rotating shaft; 4. Turntable; 5. Sleeve; 6. Stirring shaft; 7. Support; 8. Drive motor; 9. First bevel gear; 10. Second bevel gear; 11. Third bevel gear; 12. Furnace cover; 13. Gas chamber; 14. Gas hole; 15. Air pump; 16. Support plate; 17. Threaded rod; 18. Movable block; 19. Connecting rod; 20. Electric actuator; 21. Servo motor. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0021] Please see Figure 1-3 A smelting apparatus for casting copper alloys includes a U-shaped base 1 and a furnace body 2. Two rotating shafts 3 that are rotatably connected to the U-shaped base 1 are fixedly connected to the outer wall of the furnace body 2. Turntables 4 are fixedly connected to the outer walls of the two rotating shafts 3 that are opposite to each other. A discharge mechanism is provided on the outer wall of the U-shaped base 1. A stirring mechanism is provided inside the furnace body 2. A furnace cover 12 is provided on the upper end face of the furnace body 2. A gas chamber 13 is provided inside the furnace cover 12. Multiple evenly distributed gas holes 14 that communicate with the gas chamber 13 are opened on the lower end face of the furnace cover 12. An air pump 15 with an air outlet communicating with the gas chamber 13 is installed on the upper end face of the furnace cover 12. Inert gas is introduced into the air inlet of the air pump 15.

[0022] The stirring mechanism includes a bracket 7 fixedly connected to the lower end face of the furnace body 2. A drive motor 8 is installed on the outer wall of the bracket 7. A third bevel gear 11 is fixedly connected to the output end of the drive motor 8. A sleeve 5 is rotatably connected through the lower end face of the furnace body 2. A stirring shaft 6 is rotatably connected to the inner wall of the sleeve 5. Stirring paddles are fixedly connected to the outer walls of both the sleeve 5 and the stirring shaft 6. A first bevel gear 9 and a second bevel gear 10 that mesh with the third bevel gear 11 are fixedly connected to the outer walls of the stirring shaft 6 and the sleeve 5, respectively.

[0023] In this embodiment: the drive motor 8 is started, and the drive motor 8 drives the sleeve 5 and the stirring shaft 6 to rotate in opposite directions through the first bevel gear 9, the second bevel gear 10 and the third bevel gear 11, so that the molten material in the furnace body 2 is mixed evenly. The air pump 15 introduces argon gas into the gas chamber 13, which is evenly sprayed out through the gas hole 14 to form a protective atmosphere. After melting is completed, the furnace body 2 is tilted by the discharge mechanism to achieve precise casting. This utility model effectively improves the uniformity of alloy composition through the bidirectional differential speed stirring mechanism, and greatly reduces the oxidation of the melt by evenly introducing argon gas into the furnace body 2, so that the device can improve production efficiency while ensuring the quality of castings.

[0024] As a technical optimization of this utility model, the discharge mechanism includes two support plates 16 fixedly connected to the outer wall of the U-shaped seat 1. A threaded rod 17 is rotatably connected between the two support plates 16. A servo motor 21 with its output end fixedly connected to the threaded rod 17 is installed on the outer wall of one of the support plates 16. Movable blocks 18 are threadedly connected to both ends of the outer wall of the threaded rod 17. Connecting rods 19 are rotatably connected to the outer walls of the two movable blocks 18. The other ends of the two connecting rods 19 are rotatably connected to the turntable 4.

[0025] In this embodiment: the servo motor 21 is started, and the servo motor 21 drives the threaded rod 17 to rotate, which in turn drives the two movable blocks 18 to move synchronously relative to each other. The two movable blocks 18 further drive the turntable 4 to rotate through the connecting rod 19, which in turn drives the furnace body 2 to rotate through the rotating shaft 3, so that the opening of the furnace body 2 rotates to tilt downwards, which facilitates stable material discharge.

[0026] As a technical optimization of this utility model, two electric push rods 20 are installed on the outer wall of the furnace body 2 through the ear plate, and the output ends of the two electric push rods 20 are fixedly connected to the furnace cover 12 through the ear plate.

[0027] In this embodiment: two electric actuators 20 are started simultaneously, and the electric actuators 20 drive the furnace cover 12 to move up and down, so as to open or close the furnace cover 12.

[0028] As a technical optimization of this utility model, the furnace body 2 includes a refractory layer 201 and a heat insulation layer 202, and an electromagnetic coil 203 is provided between the refractory layer 201 and the heat insulation layer 202.

[0029] In this embodiment, such a layered structure design achieves a perfect combination of efficient electromagnetic heating and excellent heat preservation performance, which not only ensures a rapid and uniform melting effect, but also significantly reduces heat loss.

[0030] As a technical optimization of this utility model, the thread directions at both ends of the outer wall of the threaded rod 17 are opposite.

[0031] In this embodiment, by setting the thread directions at both ends of the outer wall of the threaded rod 17 to be opposite, it is convenient that when the threaded rod 17 is rotated, it can drive the two movable blocks 18 to move synchronously relative to each other or in opposite directions.

[0032] As a technical optimization of this utility model, a controller is provided on the outer wall of the U-shaped base 1, and the electromagnetic coil 203, drive motor 8, electric push rod 20 and servo motor 21 are all electrically connected to the controller.

[0033] In this embodiment, the controller facilitates the normal operation of the electromagnetic coil 203, drive motor 8, electric actuator 20, and servo motor 21.

[0034] The working principle and usage process of this utility model are as follows: First, the furnace cover 12 is opened using the electric push rod 20. Then, the metal material is placed into the furnace body 2. After closing the furnace cover 12, the electromagnetic coil 203 is activated to heat the metal material inside the furnace body 2. When the metal material reaches a molten state, the drive motor 8 and the air pump 15 are activated. The drive motor 8 drives the sleeve 5 and the stirring shaft 6 to rotate in opposite directions via the first bevel gear 9, the second bevel gear 10, and the third bevel gear 11, ensuring uniform mixing of the molten material inside the furnace body 2. The air pump 15 introduces argon gas into the gas chamber 13, which is then evenly sprayed out through the gas holes 14 to form a protective atmosphere. After melting is completed, the furnace cover 12 is opened by the electric push rod 20 and the servo motor 21 is started. The servo motor 21 drives the threaded rod 17 to rotate, which in turn drives the two movable blocks 18 to move synchronously relative to each other. The two movable blocks 18 further drive the turntable 4 to rotate through the connecting rod 19, which in turn drives the furnace body 2 to rotate through the rotating shaft 3, so that the opening of the furnace body 2 rotates to tilt downwards, achieving precise casting. This utility model effectively improves the uniformity of alloy composition through a bidirectional differential stirring mechanism and greatly reduces melt oxidation by uniformly introducing argon gas into the furnace body 2, so that the device can improve production efficiency while ensuring the quality of castings.

[0035] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0036] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A smelting apparatus for casting copper alloys, comprising a U-shaped base (1) and a furnace body (2), characterized in that: The outer wall of the furnace body (2) is fixedly connected to two rotating shafts (3) that are rotatably connected to the U-shaped seat (1). The outer walls of the two rotating shafts (3) opposite to each other are fixedly connected to turntables (4). The outer wall of the U-shaped seat (1) is provided with a discharge mechanism. The inside of the furnace body (2) is provided with a stirring mechanism. The upper end face of the furnace body (2) is provided with a furnace cover (12). The inside of the furnace cover (12) is provided with an air chamber (13). The lower end face of the furnace cover (12) is provided with multiple evenly distributed air holes (14) that communicate with the air chamber (13). The upper end face of the furnace cover (12) is equipped with an air pump (15) whose air outlet communicates with the air chamber (13). The air inlet of the air pump (15) is inert gas. The stirring mechanism includes a bracket (7) fixedly connected to the lower end face of the furnace body (2). A drive motor (8) is installed on the outer wall of the bracket (7). A third bevel gear (11) is fixedly connected to the output end of the drive motor (8). A sleeve (5) is rotatably connected through the lower end face of the furnace body (2). A stirring shaft (6) is rotatably connected to the inner wall of the sleeve (5). Stirring paddles are fixedly connected to the outer walls of both the sleeve (5) and the stirring shaft (6). A first bevel gear (9) and a second bevel gear (10) that mesh with the third bevel gear (11) are fixedly connected to the outer walls of the stirring shaft (6) and the sleeve (5), respectively.

2. The smelting apparatus for casting copper alloys according to claim 1, characterized in that: The discharge mechanism includes two support plates (16) fixedly connected to the outer wall of the U-shaped seat (1). A threaded rod (17) is rotatably connected between the two support plates (16). A servo motor (21) with its output end fixedly connected to the threaded rod (17) is installed on the outer wall of one of the support plates (16). Movable blocks (18) are threadedly connected to both ends of the outer wall of the threaded rod (17). Connecting rods (19) are rotatably connected to the outer walls of the two movable blocks (18). The other ends of the two connecting rods (19) are rotatably connected to the turntable (4).

3. The smelting apparatus for casting copper alloys according to claim 2, characterized in that: Two electric push rods (20) are installed on the outer wall of the furnace body (2) through ear plates. The output ends of the two electric push rods (20) are fixedly connected to the furnace cover (12) through ear plates.

4. The smelting apparatus for casting copper alloys according to claim 3, characterized in that: The furnace body (2) includes a refractory layer (201) and a heat insulation layer (202), and an electromagnetic coil (203) is provided between the refractory layer (201) and the heat insulation layer (202).

5. The smelting apparatus for casting copper alloys according to claim 2, characterized in that: The threads at both ends of the outer wall of the threaded rod (17) are in opposite directions.

6. The smelting apparatus for casting copper alloys according to claim 4, characterized in that: The outer wall of the U-shaped base (1) is equipped with a controller, and the electromagnetic coil (203), drive motor (8), electric push rod (20) and servo motor (21) are all electrically connected to the controller.

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