Copper alloy smelting agitation device

Abstract

The utility model provides a kind of copper alloy smelting stirring device, comprising: smelting furnace, stirring paddle, stirring shaft, motor and crank;Stirring paddle is located inside smelting furnace and is connected with stirring shaft;Stirring shaft is equipped with driven bevel gear, driven bevel gear is supported by bearing seat and its assembly mode with stirring shaft is circumferential fixed, axial sliding;The output shaft of motor is installed with meshing driving bevel gear and eccentric wheel with driven bevel gear;The end face of eccentric wheel one end is equipped with eccentric ring groove along its contour circumferential and movable block slidingly assembled in eccentric ring groove;Crank one end is connected with stirring shaft and can rotate circumferentially relative to stirring shaft, and its other end is connected with movable block in eccentric ring groove.The utility model can avoid the mixed dead angle caused by traditional single rotation, improve copper alloy component uniformity, and compact structure, high torque transmission efficiency, suitable for smelting furnace top space limited installation condition.

Description

Technical Field

[0001] This utility model relates to the field of furnace stirring technology, specifically to a copper alloy smelting stirring device. Background Technology

[0002] During the smelting process of copper alloys, due to the significant differences in the atomic structure of dissimilar metals, they are difficult to mix spontaneously and uniformly at high temperatures. A stirring device must be used to force the melting in order to obtain an alloy material with uniform composition.

[0003] Currently, traditional furnace stirring devices mostly employ a single rotary stirring method, relying solely on the rotation of the stirring paddle to mix the molten metal. However, single rotary stirring easily leads to laminar flow within the molten pool, resulting in insufficient mixing of the copper alloy melt, uneven distribution of alloy composition, and negatively impacting material properties. Utility Model Content

[0004] In order to solve the technical problems existing in the background art, this utility model proposes a copper alloy smelting stirring device.

[0005] The present invention provides a copper alloy smelting stirring device, comprising: a furnace, a stirring paddle, a stirring shaft, a motor, and a crank.

[0006] The stirring paddle is located inside the furnace and connected to the stirring shaft;

[0007] The stirring shaft is equipped with a driven bevel gear, which is supported by a bearing housing installed outside the furnace. The driven bevel gear is assembled with the stirring shaft in a circumferentially fixed and axially sliding manner.

[0008] The motor is supported by a support frame installed outside the furnace. The output shaft of the motor is equipped with a driving bevel gear and an eccentric wheel, and the driving bevel gear meshes with the driven bevel gear. One end of the eccentric wheel has an eccentric ring groove arranged circumferentially along its contour and a movable block slidably assembled in the eccentric ring groove.

[0009] One end of the crank is connected to the stirring shaft and can rotate circumferentially relative to the stirring shaft, while the other end is connected to the movable block in the eccentric ring groove.

[0010] Preferably, the driven bevel gear is connected to the stirring shaft via a sliding key.

[0011] Preferably, one end of the crank is connected to the stirring shaft via a spherical bearing.

[0012] Preferably, the stirring shaft is provided with an annular groove and a key block movably installed in the annular groove, and the crank is connected to the key block.

[0013] Preferably, the bearing housing is provided with cooling water channels for the passage of cooling medium.

[0014] Preferably, the stirring shaft includes a lower shaft section located inside the furnace, an upper shaft section located outside the furnace, and a heat-insulating section connecting the upper shaft section and the lower shaft section.

[0015] Preferably, the upper shaft section is a hollow structure, and its interior is filled with damping material.

[0016] Preferably, the eccentric wheel includes a base plate and a wear-resistant plate, with an eccentric annular groove disposed on the wear-resistant plate. The wear-resistant plate is made of wear-resistant material and is fixed to the base plate with bolts.

[0017] Preferably, a lubricating oil groove is formed at the bottom of the eccentric annular groove.

[0018] Preferably, a support frame is installed on the top of the furnace, and the bearing housing is mounted on the support frame.

[0019] In this invention, the stirring shaft rotates under the drive of a bevel gear, and simultaneously moves axially under the drive of an eccentric wheel and a crank. This allows the stirring shaft to rotate and reciprocate axially simultaneously under a single power source, thus enhancing the turbulence of the molten metal in the pool, avoiding the mixing dead zones caused by traditional single rotation, improving the uniformity of copper alloy composition, and without increasing energy consumption. Furthermore, the vertical arrangement of the driving bevel gear (motor end) and the driven bevel gear (stirring end) results in a compact structure, high torque transmission efficiency, and suitability for installation conditions where space at the top of the furnace is limited. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a copper alloy smelting and stirring device proposed in this utility model. Detailed Implementation

[0021] Reference Figure 1 This utility model proposes a copper alloy smelting stirring device, comprising: a furnace 1, a stirring paddle 2, a stirring shaft 3, a motor 4, and a crank 5, wherein:

[0022] The stirring paddle 2 is located inside the furnace 1 and connected to the stirring shaft 3. The stirring shaft 3 is equipped with a driven bevel gear 6, which is supported by a bearing seat 7 installed outside the furnace 1. The driven bevel gear 6 is circumferentially fixed and axially sliding with the stirring shaft 3. Specifically, the driven bevel gear 6 is connected to the stirring shaft 3 by a sliding key (i.e., an axially extending keyway is provided on the stirring shaft 3, a positioning groove is provided on the inner wall of the driven bevel gear 6, one end of the sliding key is located in the positioning groove, and the other end is located in the keyway). A bracket 13 is installed on the top of the furnace 1, and the bearing seat 7 is installed on the bracket 13.

[0023] The motor 4 is supported by a support frame 8 installed outside the furnace 1. A driving bevel gear 9 and an eccentric wheel 10 are mounted on the output shaft of the motor 4, with the driving bevel gear 9 meshing with the driven bevel gear 6. One end face of the eccentric wheel 10 has an eccentric annular groove circumferentially arranged along its contour and a movable block 11 slidably fitted within the eccentric annular groove. A spherical bearing 12 is mounted on the stirring shaft 3, or an annular groove is formed with a key block within it. One end of the crank 5 is connected to the spherical bearing 12 or the key block, allowing the crank 5 to rotate circumferentially relative to the stirring shaft 3; its other end is connected to the movable block 11 within the eccentric annular groove.

[0024] During operation, the motor 4 drives the active bevel gear 9 to rotate, which in turn drives the driven bevel gear 6 to rotate, thereby driving the stirring shaft 3 to rotate. At the same time, the eccentric wheel 10 rotates and drives the stirring shaft 3 to move axially back and forth through the crank 5, so that the stirring shaft 3 can rotate and move axially back and forth under a single power source.

[0025] In a further example, the bearing housing 7 is provided with cooling channels. During operation, inert gas or coolant such as heat transfer oil is introduced into the cooling channels to prevent lubrication failure due to high temperature.

[0026] In a further embodiment, the stirring shaft 3 includes a lower shaft section located inside the furnace 1, an upper shaft section located outside the furnace 1, and a heat-insulating section connecting the upper and lower shaft sections. The bearing housing 7 and the spherical bearing 12 are both installed on the upper shaft section. Specifically, the heat-insulating section is made of ceramic fiber composite material or a high-temperature alloy (such as Inconel 625 alloy). The design of the heat-insulating section reduces the conduction of high temperatures inside the furnace 1 to the upper shaft section, thereby blocking the thermal bridging effect, keeping the upper shaft section at a relatively low temperature, and maintaining dimensional stability. Furthermore, the upper shaft section has a hollow structure, filled with damping materials such as metal rubber to reduce high-frequency vibrations during stirring. The lower shaft section is made of molybdenum alloy TZM or surface-aluminized steel, which is resistant to high-temperature corrosion and melt erosion.

[0027] In a further embodiment, the eccentric wheel 10 includes a base plate and a wear-resistant plate, with an eccentric annular groove disposed on the wear-resistant plate. The wear-resistant plate is made of a wear-resistant material (such as sintered silicon carbide) and is fixed to the base plate by bolts. This structural design allows the wear-resistant plate to be replaced individually after wear.

[0028] Specifically: A lubricating oil groove is opened at the bottom of the eccentric ring groove. During operation, high-temperature grease such as molybdenum disulfide-based grease can be added to the lubricating oil groove, or high-temperature grease can be continuously supplied to the lubricating oil groove through a capillary oil supply system.

[0029] Furthermore, the furnace 1 in this embodiment has an upper furnace chamber and a lower furnace chamber with independent temperature control; the stirring paddle 2 includes an upper stirring part located in the upper furnace chamber and a lower stirring part located in the lower furnace chamber. During operation, the alloy raw materials are rapidly melted in the upper furnace chamber, while the eutectic temperature of the alloy is maintained in the lower furnace chamber to prevent overheating.

[0030] As can be seen from the above, the stirring shaft 3 in this invention rotates under the drive of the bevel gear, and simultaneously moves axially under the drive of the eccentric wheel 10 and the crank 5. This allows the stirring shaft 3 to rotate and reciprocate axially under a single power source, which enhances the turbulence effect of the molten metal in the pool, avoids the mixing dead zones caused by traditional single rotation, improves the uniformity of copper alloy composition, and does not increase energy consumption. In addition, the driving bevel gear 9 and the driven bevel gear 6 are arranged vertically, resulting in a compact structure and high torque transmission efficiency, making it suitable for installation conditions where the top space of the furnace 1 is limited.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A copper alloy smelting stirring device, characterized in that, include: Furnace (1), stirring paddle (2), stirring shaft (3), motor (4) and crank (5); The stirring paddle (2) is located inside the furnace (1) and connected to the stirring shaft (3); The stirring shaft (3) is provided with a driven bevel gear (6), which is supported by a bearing seat (7) installed outside the furnace (1). The driven bevel gear (6) is assembled with the stirring shaft (3) in a circumferential fixed and axial sliding manner. The motor (4) is supported by a support frame (8) installed outside the furnace (1). The output shaft of the motor (4) is equipped with a driving bevel gear (9) and an eccentric wheel (10), and the driving bevel gear (9) meshes with the driven bevel gear (6). One end of the eccentric wheel (10) is provided with an eccentric ring groove arranged circumferentially along its contour and a movable block (11) slidably assembled in the eccentric ring groove. One end of the crank (5) is connected to the stirring shaft (3) and can rotate circumferentially relative to the stirring shaft (3), while the other end is connected to the movable block (11) in the eccentric ring groove.

2. The copper alloy smelting stirring device according to claim 1, characterized in that, The driven bevel gear (6) is connected to the stirring shaft (3) by a sliding key.

3. The copper alloy smelting stirring device according to claim 1, characterized in that, One end of the crank (5) is connected to the stirring shaft (3) via a spherical bearing (12).

4. The copper alloy smelting stirring device according to claim 1, characterized in that, The stirring shaft (3) is provided with an annular groove and a key block that is movably installed in the annular groove. The crank (5) is connected to the key block.

5. The copper alloy smelting stirring device according to claim 1, characterized in that, The bearing housing (7) is provided with cooling water channels for the passage of cooling medium.

6. The copper alloy smelting stirring device according to claim 1, characterized in that, The stirring shaft (3) includes a lower shaft section located inside the furnace (1), an upper shaft section located outside the furnace (1), and a heat insulation section connecting the upper shaft section and the lower shaft section.

7. The copper alloy smelting stirring device according to claim 6, characterized in that, The upper shaft section is a hollow structure, and its interior is filled with damping material.

8. The copper alloy smelting stirring device according to claim 1, characterized in that, The eccentric wheel (10) includes a base plate and a wear-resistant plate. An eccentric ring groove is provided on the wear-resistant plate. The wear-resistant plate is made of wear-resistant material and is fixed to the base plate with bolts.

9. The copper alloy smelting stirring device according to claim 1, characterized in that, A lubricating oil groove is provided at the bottom of the eccentric ring groove.

10. The copper alloy smelting stirring apparatus according to any one of claims 1-9, characterized in that, A frame (13) is installed on the top of the furnace (1), and a bearing seat (7) is installed on the frame (13).

Images