An apparatus for adding an aluminum alloy refining agent

Abstract

The utility model discloses a device of adding aluminium alloy refining agent relates to aluminium alloy smelting technical field, including graphite cover, the wall surface of graphite cover is opened and has the drain hole, the inner bottom wall of graphite cover is connected with the support of extending along its axial direction, the outside of support upper end is equipped with handheld cover, the top surface rotation of handheld cover is installed with knob, the support top and knob bottom surface are linked, the outer wall of support is equipped with the piston column of sliding, the outer wall of piston column and the inner wall of drain hole are pasted, the inside of handheld cover still is provided with the drive part for pushing piston column and sliding along the axial direction of support, the utility model discloses solve the uneven distribution of refining agent in the adding method of existing graphite bell, and the problem that aluminium liquid bottom is difficult to reach accurately is the core target, through the cooperation of multiple components, the convenient addition, accurate conveying and sufficient dispersion of refining agent are realized.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy smelting technology, specifically to a device for adding aluminum alloy refining agents. Background Technology

[0002] Currently, in the refining process of A356 aluminum alloy, adding refining agents to the molten aluminum is one of the core methods to achieve refining effects. Refining agents can react physically or chemically with hydrogen and oxide inclusions in the molten aluminum, transforming harmful impurities into easily separable substances, thereby purifying the molten aluminum. In existing technology, the mainstream method for adding refining agents to molten aluminum is to use a graphite bell jar as the addition tool. The specific operation process is as follows: the operator places a measured amount of refining agent inside the graphite bell jar, and then, using tools such as an operating lever, slowly presses the graphite bell jar into the molten aluminum until the bell jar is close to the bottom of the melting furnace. The pressure of the molten aluminum causes the refining agent to be slowly released from the pores of the graphite bell jar, thus achieving a contact reaction between the refining agent and the molten aluminum.

[0003] However, this method of adding refining agents based on graphite bell jars has significant drawbacks in practical applications, which severely restricts the improvement of refining effect. The refining agent mainly seeps out slowly from the pores of the bell jar, making it difficult to achieve rapid and uniform dispersion inside the aluminum liquid. Since the amount of aluminum liquid is usually large during aluminum alloy smelting and the aluminum liquid has a certain viscosity, the seeping refining agent tends to accumulate in the area around the bell jar and cannot quickly diffuse to all areas of the aluminum liquid. This results in significant differences in the degree of refining in different parts of the aluminum liquid, and harmful impurities in some areas cannot be effectively removed, affecting the overall purity of the aluminum liquid.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide an apparatus for adding aluminum alloy refining agents to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a device for adding aluminum alloy refining agent, including a graphite cover, a drain hole on the wall of the graphite cover, a support rod extending axially along the inner bottom wall of the graphite cover, a hand sleeve on the upper end of the support rod, a knob rotatably mounted on the top surface of the hand sleeve, the top end of the support rod connected to the bottom surface of the knob, a piston column slidably mounted on the outer wall of the support rod, the outer wall of the piston column fitting against the inner wall of the drain hole, and a driving component for pushing the piston column to slide axially along the support rod is also provided inside the hand sleeve.

[0007] Furthermore, multiple drainage holes are provided, arranged in a circumferential array, and distributed on the sidewalls and bottom wall of the graphite cover.

[0008] Furthermore, a hand handle is connected to the outer wall of the hand sleeve, and the hand handle extends radially along the hand sleeve.

[0009] Furthermore, the driving component includes a connecting sleeve that is slidably sleeved on the outside of the support rod and fixedly connected to the top surface of the piston column. A movable sleeve is connected to the top end of the connecting sleeve. A rotating column extending along its axial direction is connected to the bottom surface of the knob. A spiral plate extending along its axial direction is provided on the outer wall of the rotating column. A needle roller is rotatably provided on the inner wall of the movable sleeve. The needle roller is rolledly connected to the top surface of the spiral plate.

[0010] Furthermore, the outer wall of the movable sleeve fits against the inner wall of the handheld sleeve, and the bottom end of the rotating column extends into the interior of the movable sleeve.

[0011] Furthermore, a return spring is sleeved on the outside of the rotating column. The top end of the return spring is connected to the inner wall of the hand sleeve, and the bottom end of the return spring is connected to the top surface of the movable sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the gripping and control structure of the handheld rod, handheld sleeve and support rod, can accurately lower the graphite cover to the bottom of the aluminum liquid. At the same time, the initial sealing design of the piston column ensures the complete delivery of the refining agent. The bottom wall discharge hole directly releases the refining agent to the bottom impurity deposition area, specifically removing heavy oxide inclusions and solving the problem that bottom impurities are difficult to contact the refining agent.

[0014] 2. This utility model uses an active drive structure consisting of a knob, a spiral plate, and a piston column to actively discharge the refining agent from a multi-directional circumferential array of discharge holes, achieving three-dimensional diffusion, greatly increasing the contact area with the molten aluminum, and preventing the refining agent from accumulating. Compared with existing methods, the refining efficiency is improved. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present utility model;

[0016] Figure 2 This is a bottom view of the structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the connection structure between the support rod and the rotating column in this utility model.

[0019] In the diagram: 1. Graphite cover; 2. Drain hole; 3. Support rod; 4. Piston column; 5. Connecting sleeve; 6. Movable sleeve; 7. Hand grip; 8. Knob; 9. Rotating column; 10. Return spring; 11. Spiral plate; 12. Needle roller; 13. Hand grip. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-4 This utility model provides a technical solution: a device for adding aluminum alloy refining agent, including a graphite cover 1, a drain hole 2 opened on the wall of the graphite cover 1, a support rod 3 extending along its axial direction connected to the inner bottom wall of the graphite cover 1, a hand sleeve 7 sleeved on the upper end of the support rod 3, a knob 8 rotatably mounted on the top surface of the hand sleeve 7, the top end of the support rod 3 connected to the bottom surface of the knob 8, a piston column 4 slidably sleeved on the outer wall of the support rod 3, the outer wall of the piston column 4 fitting against the inner wall of the drain hole 2, and a driving component for pushing the piston column 4 to slide along the axial direction of the support rod 3 is also provided inside the hand sleeve 7.

[0022] Specifically, existing graphite bell jars rely on the pressure of molten aluminum to passively exude refining agents, which tend to accumulate around the bell jar; while the present claim uses a driving component to push the piston column 4 to actively push the refining agent, so that the refining agent is actively discharged from the discharge hole 2, thereby improving the diffusion capacity and fundamentally improving the dispersion effect.

[0023] As a technical optimization of this utility model, multiple drainage holes 2 are provided, and the multiple drainage holes 2 are arranged in a circular array. The multiple drainage holes 2 are distributed on the side wall and bottom wall of the graphite cover 1.

[0024] Specifically, since the discharge holes 2 are provided in multiple and arranged in a circular array, covering the side and bottom walls of the graphite cover 1, the refining agent will be discharged simultaneously from multiple directions.

[0025] As a technical optimization of this utility model, a hand handle 13 is connected to the outer wall of the hand sleeve 7, and the hand handle 13 extends radially along the hand sleeve 7.

[0026] Specifically, when the knob 8 on the top surface of the hand sleeve 7 is turned to control the release of the refining agent, the hand lever 13 can provide stable reaction force support, preventing the device from shifting due to the torque generated by the rotation of the knob 8, ensuring that the piston column 4 slides stably and the refining agent is released evenly.

[0027] As a technical optimization of this utility model, the driving component includes a connecting sleeve 5 that is slidably sleeved on the outside of the support rod 3 and fixedly connected to the top surface of the piston column 4. A movable sleeve 6 is connected to the top of the connecting sleeve 5. A rotating column 9 extending along its axial direction is connected to the bottom surface of the knob 8. A spiral plate 11 extending along its axial direction is provided on the outer wall of the rotating column 9. A needle roller 12 is rotatably provided on the inner wall of the movable sleeve 6. The needle roller 12 is rolled and connected to the top surface of the spiral plate 11.

[0028] Specifically, the operator rotates the knob 8 on the top surface of the handheld sleeve 7, causing the rotating column 9 connected to the bottom surface of the knob 8 to rotate synchronously. The spiral plate 11 on the outer wall of the rotating column 9 rotates together. Since the roller needle 12 on the inner wall of the movable sleeve 6 is connected to the top surface of the spiral plate 11, when the spiral plate 11 rotates, its spiral structure will generate an axial thrust on the roller needle 12. Utilizing the characteristic of "rotational motion being converted into linear motion" of the spiral transmission, the movable sleeve 6 is pushed to move downward along the axial direction. The bottom end of the movable sleeve 6 is connected to the connecting sleeve 5. The connecting sleeve 5 is slidably sleeved on the outside of the support rod 3 and fixed to the top surface of the piston column 4. Therefore, the axial movement of the movable sleeve 6 will be transmitted to the piston column 4 through the connecting sleeve 5, causing the piston column 4 to slide stably along the support rod 3, thereby realizing the push and release of the refining agent.

[0029] As a technical optimization of this utility model, the outer wall of the movable sleeve 6 fits against the inner wall of the handheld sleeve 7, and the bottom end of the rotating column 9 extends into the interior of the movable sleeve 6.

[0030] Specifically, the outer wall of the movable sleeve 6 fits against the inner wall of the handheld sleeve 7, so that the movable sleeve 6 is always guided by the inner wall of the handheld sleeve 7 during axial movement, avoiding radial offset, and ensuring that the thrust of the movable sleeve 6 on the connecting sleeve 5 is consistent with the axial direction of the support rod 3, and the piston column 4 slides in a straight line.

[0031] As a technical optimization of this utility model, a reset spring 10 is sleeved on the outside of the rotating column 9. The top end of the reset spring 10 is connected to the inner wall of the hand sleeve 7, and the bottom end of the reset spring 10 is connected to the top surface of the movable sleeve 6.

[0032] Specifically, when the operator rotates the knob 8 in the opposite direction, the thrust of the spiral plate 11 on the needle roller 12 disappears, the return spring 10 releases its elastic potential energy, and pushes the movable sleeve 6 downward to reset along the axial direction. The movable sleeve 6 drives the piston column 4 back to the initial position through the connecting sleeve 5, thus completing the device reset.

[0033] This device for adding aluminum alloy refining agents aims to solve the problems of uneven refining agent dispersion and difficulty in accurately reaching the bottom of the molten aluminum in existing graphite bell jar addition methods. Through the coordinated operation of multiple components, it achieves convenient addition, precise delivery, and full dispersion of the refining agent. Its overall working principle can be analyzed from two aspects: operation process and structural function synergy.

[0034] The operator first loads a fixed amount of aluminum alloy refining agent into the internal cavity of the graphite cover 1 through the top opening of the graphite cover 1. At this time, the piston column 4 is in the initial position inside the graphite cover 1, and its outer wall is tightly fitted with the inner wall of the discharge hole 2 on the wall of the graphite cover 1.

[0035] After loading, the operator holds the handle 13 on the outer wall of the handle sleeve 7. The handle 13 extends radially along the handle sleeve 7, providing the operator with a stable grip point, which can reduce the shaking during the lowering process of the device. The entire device is slowly lowered into the molten aluminum in the melting furnace. Since the graphite cover 1 is made of high-temperature resistant graphite material, it can withstand the high temperature environment of the molten aluminum. At the same time, the operator can accurately control the lowering depth of the graphite cover 1 through the cooperation of the handle 13 and the handle sleeve 7, until it is sent to the bottom of the molten aluminum, which solves the problem that the existing graphite bell cover is difficult to stably reach the bottom of the molten aluminum.

[0036] When the graphite cover 1 reaches the bottom of the molten aluminum, the operator turns the knob 8 on the top surface of the hand sleeve 7. The bottom surface of the knob 8 is connected to the top of the support rod 3, and the bottom surface of the knob 8 is also connected to a rotating column 9 extending along its axis. When the knob 8 is turned, the rotating column 9 will rotate synchronously.

[0037] The outer wall of the rotating column 9 is provided with a spiral plate 11 extending along the axial direction, and the roller needle 12 rotatably disposed on the inner wall of the movable sleeve 6 is in rolling connection with the top surface of the spiral plate 11. When the rotating column 9 rotates, the spiral plate 11 will generate an axial thrust on the movable sleeve 6 through the roller needle 12, utilizing the characteristic of the spiral structure that "rotation is converted into linear motion".

[0038] The bottom end of the movable sleeve 6 is connected to the connecting sleeve 5. The connecting sleeve 5 is slidably fitted onto the outside of the support rod 3 and fixed to the top surface of the piston column 4. Therefore, the axial thrust on the movable sleeve 6 is transmitted sequentially to the connecting sleeve 5 and the piston column 4, pushing the piston column 4 to slide downward along the axial direction of the support rod 3. When the piston column 4 slides downward, it exerts downward pressure on the refining agent inside the graphite shroud 1, forcing the refining agent to be quickly discharged from the drain hole 2. Since the drain hole 2 is provided with multiple holes arranged in a circumferential array on the side and bottom walls of the graphite shroud 1, the discharged refining agent can diffuse from multiple directions at the bottom of the molten aluminum, achieving full contact with the molten aluminum and completely solving the problem of the refining agent only accumulating and unevenly dispersing around the bell shroud in the existing method.

[0039] After the refining agent is released, the operator turns the knob 8 in the opposite direction, and the rotating column 9 rotates in the opposite direction simultaneously. The thrust of the spiral plate 11 on the needle roller 12 disappears. At this time, the return spring 10, which is sleeved on the outside of the rotating column 9, has its top end connected to the inner wall of the hand sleeve 7 and its bottom end connected to the top surface of the movable sleeve 6. It releases elastic potential energy and pushes the movable sleeve 6 to return to its original position along the axial direction. Then, through the connecting sleeve 5, it drives the piston column 4 back to its initial position so that the refining agent can be refilled and used again. This reduces the complexity of operation and the cost of equipment replacement.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An apparatus for adding an aluminum alloy refining agent, comprising a graphite shroud (1), wherein a drain hole (2) is provided on the wall surface of the graphite shroud (1), characterized in that: The inner bottom wall of the graphite cover (1) is connected to a support rod (3) extending along its axial direction. A hand sleeve (7) is fitted on the outer side of the upper end of the support rod (3). A knob (8) is rotatably installed on the top surface of the hand sleeve (7). The top end of the support rod (3) is connected to the bottom surface of the knob (8). A piston column (4) is slidably fitted on the outer wall of the support rod (3). The outer wall of the piston column (4) is in contact with the inner wall of the drain hole (2). The inside of the hand sleeve (7) is also provided with a driving component for pushing the piston column (4) to slide along the axial direction of the support rod (3).

2. The apparatus for adding aluminum alloy refining agents as described in claim 1, characterized in that: The drain holes (2) are provided in multiple ways, and the multiple drain holes (2) are arranged in a circular array. The multiple drain holes (2) are distributed on the side wall and bottom wall of the graphite cover (1).

3. The apparatus for adding aluminum alloy refining agents as described in claim 1, characterized in that: A hand handle (13) is connected to the outer wall of the hand sleeve (7), and the hand handle (13) extends radially along the hand sleeve (7).

4. The apparatus for adding aluminum alloy refining agents as described in claim 1, characterized in that: The driving component includes a connecting sleeve (5) that is slidably sleeved on the outside of the support rod (3) and fixedly connected to the top surface of the piston column (4). The top end of the connecting sleeve (5) is connected to a movable sleeve (6). The bottom surface of the knob (8) is connected to a rotating column (9) that extends along its axial direction. The outer wall of the rotating column (9) is provided with a spiral plate (11) that extends along its axial direction. The inner wall of the movable sleeve (6) is rotatably provided with a needle roller (12), which is rolledly connected to the top surface of the spiral plate (11).

5. The apparatus for adding aluminum alloy refining agents as described in claim 4, characterized in that: The outer wall of the movable sleeve (6) fits against the inner wall of the handheld sleeve (7), and the bottom end of the rotating column (9) extends into the interior of the movable sleeve (6).

6. The apparatus for adding aluminum alloy refining agents as described in claim 4, characterized in that: A return spring (10) is sleeved on the outside of the rotating column (9). The top end of the return spring (10) is connected to the inner wall of the hand sleeve (7), and the bottom end of the return spring (10) is connected to the top surface of the movable sleeve (6).

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