Vortex well mechanical pump rotor device for melting aluminum skimmings in double-chamber furnace in secondary aluminum industry

Abstract

The utility model discloses a vortex well mechanical pump rotor device for melting aluminum skimmings in a double-chamber furnace in the secondary aluminum industry, which comprises a rotating shaft rod and an impeller mounted at the end part of the rotating shaft rod, the impeller is of a cylindrical structure, one end of the impeller is provided with a mounting hole connected with the rotating shaft rod, and the other end of the impeller is provided with a conical cavity; a plurality of kidney-shaped holes distributed circumferentially are formed in the side wall of the conical cavity, the impeller between every two adjacent kidney-shaped holes is a blade, an inner threaded hole in the top of the impeller is matched with an outer thread of the rotating shaft rod, disassembly and maintenance are convenient, the size of an impeller body, blade distribution, the number of open holes and the shape are optimized, and graphite materials and antioxidant treatment are combined. The design can greatly optimize the fluid mechanical property, improve the molten aluminum throughput and prolong the service life of the rotor, and is suitable for efficient conveying of molten aluminum in the aluminum skimming melting process of the secondary aluminum double-chamber furnace.

Description

A vortex well mechanical pump rotor device for melting aluminum chips in a dual-chamber furnace in the recycled aluminum industry Technical Field

[0001] This utility model relates to the technical field of recycled aluminum production equipment, specifically to a vortex well mechanical pump rotor device for melting aluminum chips in a double-chamber furnace in the recycled aluminum industry, and particularly to the impeller and shaft rod in the device. Background Technology

[0002] In the recycled aluminum industry, double-chamber furnaces are commonly used to melt aluminum scrap and other waste materials. The vortex well mechanical pump is a key component for conveying molten aluminum within the furnace. Traditional mechanical pump rotors have several drawbacks: an unreasonable impeller design leads to high fluid resistance and low molten aluminum throughput; insufficient material selection and processing technology result in easy rotor wear, short lifespan, and frequent replacements that increase production costs; furthermore, the installation and maintenance of existing rotors are inconvenient, impacting production efficiency. Therefore, there is an urgent need for a mechanical pump rotor device that optimizes hydrodynamic performance, increases molten aluminum throughput, extends service life, and is easy to maintain. Summary of the Invention

[0003] To address the problems existing in the prior art, this utility model provides a vortex well mechanical pump rotor device for melting aluminum chips in a dual-chamber furnace in the recycled aluminum industry. Improvements are made to the impeller and shaft of this device. The internal threaded hole at the top of the impeller mates with the external thread of the shaft, facilitating disassembly and maintenance. The impeller's main body dimensions, blade distribution, number and shape of openings are optimized, and it incorporates graphite material and anti-oxidation treatment. This design significantly optimizes hydrodynamic performance, increases the aluminum melt throughput, and enhances rotor life, making it suitable for the efficient transport of aluminum melt during the melting of aluminum chips in a dual-chamber furnace for recycled aluminum.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a vortex well mechanical pump rotor device for melting aluminum chips in a double-chamber furnace in the recycled aluminum industry, comprising: a rotating shaft and an impeller installed at the end of the rotating shaft. The impeller is a cylindrical structure with a mounting hole at one end connected to the rotating shaft and a conical cavity at the other end. The side wall of the conical cavity is provided with multiple circumferentially distributed waist-shaped holes, and the impeller between adjacent waist-shaped holes is a blade.

[0005] Furthermore, the rotating shaft has a cylindrical structure, with one end connected to the impeller and the other end connected to the mechanical pump power unit.

[0006] Furthermore, the conical cavity and mounting hole are located on the center line of the impeller, and the rotating shaft and the center of the impeller are on the same axis.

[0007] Furthermore, the impeller and the shaft are connected by threads, the mounting hole on the impeller is an internal thread hole, and the end of the shaft that connects to the impeller is provided with an external thread that mates with the internal thread hole.

[0008] Furthermore, the rotation direction of the shaft rod and the impeller is opposite to the installation direction of the shaft rod and the impeller, making it tighter as it rotates.

[0009] Furthermore, the impeller is made of graphite.

[0010] Furthermore, the sidewall of the waist-shaped hole is a slope with a radial inclination angle of 10-30°.

[0011] Furthermore, the impeller has a chamfered edge at the end near the shaft.

[0012] The beneficial effects of this utility model are: the internal threaded hole at the top of the impeller mates with the external thread of the shaft rod, facilitating disassembly and maintenance; the impeller body dimensions, blade distribution, number and shape of openings have been optimized, and it incorporates graphite material and anti-oxidation treatment. This design greatly optimizes hydrodynamic performance, increases the aluminum melt throughput, and enhances rotor life, making it suitable for efficient aluminum melt transportation during the melting of aluminum chips in a dual-chamber furnace for recycled aluminum. Attached Figure Description

[0013] Figure 1 is a three-dimensional structural diagram of the impeller in this utility model;

[0014] Figure 2 is a schematic diagram of the main structure of the impeller in this utility model;

[0015] Figure 3 is a top view of the impeller structure in this utility model;

[0016] Figure 4 is a schematic diagram of the BB cross-sectional structure in Figure 3;

[0017] Figure 5 is a three-dimensional structural diagram of the rotating shaft of this utility model;

[0018] Figure 6 is an enlarged schematic diagram of the main view of the rotating shaft of this utility model;

[0019] In the diagram: 1. Shaft rod; 2. Impeller; 21. Mounting hole; 22. Conical cavity; 23. Waist-shaped hole; 24. Blade; 25. Beveled edge. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0022] As shown in Figures 1-6, a vortex well mechanical pump rotor device for melting aluminum chips in a double-chamber furnace in the recycled aluminum industry includes: a rotating shaft 1 and an impeller 2 installed at the end of the rotating shaft 1. The impeller 2 has a cylindrical structure, with a mounting hole 21 at one end connected to the rotating shaft 1 and a conical cavity 22 at the other end. The side wall of the conical cavity 22 has multiple circumferentially distributed waist-shaped holes 23, and the impeller 2 between adjacent waist-shaped holes 23 consists of blades 24.

[0023] As shown in Figures 1-4, the rotating shaft 1 is a cylindrical structure. One end of it is connected to the impeller 2, and the other end is connected to the mechanical pump power unit, which enables detachable installation and facilitates maintenance and replacement.

[0024] As shown in Figures 1-4, the sidewall of the waist-shaped hole 23 is a slope with a radial inclination angle of 10-30°, which is 15° in this example. The width of the waist-shaped hole 23 gradually decreases from the outer wall to the inner wall of the impeller 2. By opening waist-shaped holes 23 with specific shapes and distribution on the impeller 2, and carefully designing the shape and position of the waist-shaped holes 23 relative to the center, the fluid pressure is balanced, eddies are reduced, and the flow rate of aluminum liquid is increased.

[0025] The waist-shaped hole 23 is set vertically or axially inclined on the impeller 2.

[0026] As shown in Figures 1-4, the impeller 2 has a chamfered edge 25 at one end near the shaft 1. Through the combination of the outer contour of the impeller 2 body and the fluid dynamics design, the number and distribution of blades 24 have been optimized to reduce the flow resistance of aluminum liquid.

[0027] As shown in Figure 4, the conical cavity 22 and the mounting hole 21 are located on the center line of the impeller 2, and the rotating shaft 1 and the center of the impeller 2 are located on the same axis.

[0028] As shown in Figures 1, 4, 5, and 6, the impeller 2 and the shaft rod 1 are connected by threads. The mounting hole 21 on the impeller 2 is an internal thread hole, and the end of the shaft rod 1 connected to the impeller 2 is provided with an external thread that mates with the internal thread hole.

[0029] The rotation direction of the shaft rod 1 and the impeller 2 is opposite to the installation direction of the shaft rod 1 and the impeller 2, so that they become tighter as they rotate.

[0030] Impeller 2 machining: According to the dimensions and technical requirements of the drawings, impeller 2 is manufactured through precision machining. Impeller 2 is made of graphite and is required to undergo anti-oxidation treatment to enhance corrosion resistance. The perpendicularity of the upper end face to the shaft center is within 0.05mm to ensure rotational stability. The impeller 2 needs to be machined with rounded corners to reduce stress concentration and improve structural strength.

[0031] The rotating shaft 1 is required to undergo anti-oxidation treatment. The perpendicularity of both end faces to the shaft center is within 0.05mm. The coaxiality of the two spirals is controlled within 0.05mm. The coaxiality of the outer circle is below 0.05mm. The rotating shaft 1 needs to be made with process fillets. The rotating shaft 1 is made of graphite material.

[0032] Assembly: Connect the external thread of one end of the rotating shaft 1 to the internal thread hole of the impeller 2, ensuring a secure connection.

[0033] Installation and Use: Install the assembled rotor device onto the vortex well mechanical pump of the double chamber furnace for recycled aluminum. Connect the other end of the shaft rod 1 to the power unit to ensure clockwise rotation, so that the impeller 2 rotates at high speed in the aluminum liquid to achieve efficient aluminum liquid transportation.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vortex well mechanical pump rotor device for melting aluminum chips in a dual-chamber furnace in the recycled aluminum industry, characterized in that: It includes: a rotating shaft and an impeller mounted on the end of the rotating shaft. The impeller is a cylindrical structure with a mounting hole at one end for connecting to the rotating shaft and a conical cavity at the other end. The side wall of the conical cavity has multiple circumferentially distributed waist-shaped holes, and the impeller between adjacent waist-shaped holes is a blade.

2. The vortex well mechanical pump rotor device for melting aluminum chips in a dual-chamber furnace in the recycled aluminum industry according to claim 1, characterized in that: The rotating shaft has a cylindrical structure.

3. A mechanical pump rotor device for a vortex well for melting aluminium scrap in a dual chamber furnace in the secondary aluminium industry according to claim 2, characterised in that: The conical cavity and mounting hole are located on the center line of the impeller, and the shaft and the center of the impeller are on the same axis.

4. The vortex well mechanical pump rotor device for melting aluminum chips in a dual-chamber furnace in the recycled aluminum industry according to claim 2, characterized in that: The impeller and the shaft are connected by threads. The mounting hole on the impeller is an internal thread hole, and the end of the shaft that connects to the impeller is provided with an external thread that mates with the internal thread hole.

5. The vortex well mechanical pump rotor device for melting aluminum chips in a dual-chamber furnace in the recycled aluminum industry according to claim 2, characterized in that: The rotation direction of the shaft and the impeller is opposite to the installation direction of the shaft and the impeller.

6. A mechanical pump rotor device for a vortex well for melting aluminum scrap in a dual chamber furnace in the secondary aluminum industry as defined in claim 1, characterized in that: The impeller is made of graphite.

7. The vortex well mechanical pump rotor device for melting aluminum chips in a dual-chamber furnace in the recycled aluminum industry according to claim 1, characterized in that: The sidewall of the waist-shaped hole is inclined, with a radial inclination angle of 10-30°.

8. The vortex well mechanical pump rotor device for melting aluminum chips in a dual-chamber furnace in the recycled aluminum industry according to claim 1, characterized in that: The impeller has a chamfered edge at the end near the shaft.

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