Aluminum alloy die-casting molten aluminum purification structure with cyclone separation function

Abstract

The utility model discloses an aluminum alloy die-casting molten aluminum purification structure with cyclone separation, which comprises a slag discharge pipe, a cyclone connected to the outer wall of the top of the slag discharge pipe, an overflow pipe connected to the outer wall of the top of the cyclone, and a purification mechanism comprising a feed pipe connected to the outer wall of the cyclone, an air pump is installed on the outer wall of the feeding pipe, a Y-shaped filter pipe is connected to the end, away from the feeding pipe, of the overflow pipe, two flange rings are arranged on the outer wall of the bottom of the Y-shaped filter pipe, the bottom of the Y-shaped filter pipe is fixed to one of the flange rings, and a filter screen is arranged on the inner wall of the bottom of the Y-shaped filter pipe. The aluminum alloy die-casting molten aluminum purification structure with the cyclone separation function has the technical effects that the impurity removal effect on molten aluminum is improved, and residual impurities on the cavity wall of the cyclone are discharged.

Description

Technical Field

[0001] This utility model relates to the field of aluminum liquid purification technology, and in particular to a purification structure for aluminum alloy die-casting liquid with cyclone separation. Background Technology

[0002] In aluminum alloy die casting production, the purification treatment of molten aluminum directly determines the quality and performance of the castings. With the industry's increasing requirements for the performance of aluminum alloy products, the development of efficient molten aluminum purification structures to remove impurities and gases has become a core requirement for technological upgrading.

[0003] However, traditional aluminum alloy die-casting liquid purification structures with cyclone separation are not effective at separating minute impurities and gases, resulting in low purity of the aluminum liquid.

[0004] For example, in the die-casting process of automotive parts, traditional cyclone separators are used to purify the molten aluminum, but a large number of tiny impurities and gases remain in the molten aluminum, resulting in substandard quality of the produced parts. Utility Model Content

[0005] This utility model discloses a purification structure for aluminum alloy die-casting liquid with cyclone separation, aiming to solve the technical problem that traditional aluminum alloy die-casting liquid purification structures with cyclone separation have poor separation effect on small impurities and gases, resulting in low purity of aluminum liquid.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A purification structure for molten aluminum alloy die-casting with hydrocyclone separation includes a slag discharge pipe, a hydrocyclone connected to the top outer wall of the slag discharge pipe, an overflow pipe connected to the top outer wall of the hydrocyclone, and further includes: a purification mechanism: the purification mechanism includes a feed pipe connected to the outer wall of the hydrocyclone, an air pump installed on the outer wall of the feed pipe, a Y-shaped filter pipe connected to the end of the overflow pipe away from the feed pipe, two flange rings provided on the bottom outer wall of the Y-shaped filter pipe, the bottom of the Y-shaped filter pipe being fixed to one of the flange rings, a filter screen provided on the bottom inner wall of the Y-shaped filter pipe, the filter screen being fixed to the top outer wall of one of the flange rings, a tie rod fixed on its bottom outer wall, the same ceramic foam filter plate installed on the bottom inner wall of the filter screen and the top outer wall of one of the flange rings, a discharge pipe connected to one side of the Y-shaped filter pipe, a pressure pump installed on the outer wall of the discharge pipe, and a cleaning mechanism: the cleaning mechanism is located inside the hydrocyclone.

[0008] This solution injects inert gas into the molten aluminum flowing through the feed pipe by activating an air pump. This gas comes into contact with the molten aluminum, generating a large number of bubbles. Impurities in the molten aluminum adhere to the surface of these bubbles, thus achieving better separation of impurities from the molten aluminum during the swirling process. The filter screen inside the Y-shaped filter tube works in conjunction with the ceramic foam filter plate inside to perform secondary filtration on the molten aluminum after the initial separation by the cyclone separator. The porous structure of the ceramic foam filter plate further refines the molten aluminum by removing tiny particulate impurities, achieving deeper purification of the molten aluminum. Finally, a pressure pump installed on the outer wall of the discharge pipe separates residual gas from the molten aluminum and discharges the gas through the pressure pump, thereby reducing the gas content of the molten aluminum.

[0009] In a preferred embodiment, the cleaning mechanism includes spiral guide vanes mounted on the inner wall of the hydrocyclone, a vibrator is provided inside the hydrocyclone, and springs are connected to the outer walls on both sides of the vibrator.

[0010] The molten aluminum is guided by spiral guide vanes installed on the inner wall of the hydrocyclone to move along the inner wall and form a spiral flow. This increases centrifugal force and makes it easier for impurities to move toward the hydrocyclone wall. At this time, the vibrator installed inside the hydrocyclone is activated, which drives the inner wall of the hydrocyclone to vibrate, thereby reducing the accumulation of impurities on the inner wall of the hydrocyclone. The spring undergoes elastic deformation as the vibrator works, which buffers the vibration and reduces the impact on the main structure of the hydrocyclone, thus completely discharging the impurities remaining on the hydrocyclone cavity wall.

[0011] As described above, an aluminum alloy die-casting molten aluminum purification structure with cyclone separation includes a slag discharge pipe, a hydrocyclone connected to the top outer wall of the slag discharge pipe, an overflow pipe connected to the top outer wall of the hydrocyclone, and further includes: a purification mechanism: the purification mechanism includes a feed pipe connected to the outer wall of the hydrocyclone, an air pump installed on the outer wall of the feed pipe, a Y-shaped filter pipe connected to the end of the overflow pipe away from the feed pipe, two flange rings provided on the bottom outer wall of the Y-shaped filter pipe, the bottom of the Y-shaped filter pipe being fixed to one of the flange rings, a filter screen provided on the bottom inner wall of the Y-shaped filter pipe, the filter screen being fixed to the top outer wall of one of the flange rings, a tie rod fixed on its bottom outer wall, the same ceramic foam filter plate installed on the bottom inner wall of the filter screen and the top outer wall of one of the flange rings, a discharge pipe connected to one side of the Y-shaped filter pipe, a pressure pump installed on the outer wall of the discharge pipe, and a cleaning mechanism: the cleaning mechanism is located inside the hydrocyclone. The aluminum alloy die-casting molten aluminum purification structure with cyclone separation provided by this utility model has the technical effect of improving the removal effect of impurities from molten aluminum and discharging the impurities remaining on the wall of the cyclone separator. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the overall structure of the aluminum alloy die-casting liquid purification structure with cyclone separation proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of a hydrocyclone with a hydrocyclone separation structure for purifying molten aluminum alloy die-casting.

[0014] Figure 3 For the present utility model in Figure 2 Enlarged view of point A in the image.

[0015] Figure 4 For the present utility model in Figure 2 Enlarged view of point B in the image.

[0016] In the attached diagram: 1. Slag discharge pipe; 2. Hydrocyclone; 3. Feed pipe; 4. Air pump; 5. Overflow pipe; 6. Y-type filter pipe; 7. Pressure pump; 8. Discharge pipe; 9. Flange ring; 10. Tie rod; 11. Ceramic foam filter plate; 12. Sealing ring; 13. Filter screen; 14. Spring; 15. Vibrator; 16. Spiral guide vane. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0018] The aluminum alloy die-casting liquid purification structure disclosed in this utility model is mainly applied to traditional aluminum alloy die-casting liquid purification structures with cyclone separation, which are not effective in separating small impurities and gases, resulting in low purity of the aluminum liquid.

[0019] Reference Figure 1 , Figure 2 and Figure 3A purification structure for molten aluminum alloy die-casting with cyclone separation includes a slag discharge pipe 1, a hydrocyclone 2 connected to the top outer wall of the slag discharge pipe 1, and an overflow pipe 5 connected to the top outer wall of the hydrocyclone 2. It also includes a purification mechanism: the purification mechanism includes a feed pipe 3 connected to the outer wall of the hydrocyclone 2, an air pump 4 installed on the outer wall of the feed pipe 3, and a Y-type filter pipe 6 connected to the end of the overflow pipe 5 away from the feed pipe 3. Two flanges are provided on the bottom outer wall of the Y-type filter pipe 6. The bottom of the Y-shaped filter tube 6 is fixed to one of the flange rings 9. A filter screen 13 is provided on the inner wall of the bottom of the Y-shaped filter tube 6. The filter screen 13 is fixed to the outer wall of the top of one of the flange rings 9. A tie rod 10 is fixed on the outer wall of its bottom. The inner wall of the bottom of the filter screen 13 and the outer wall of the top of one of the flange rings 9 are equipped with the same ceramic foam filter plate 11. A discharge pipe 8 is connected to one side of the Y-shaped filter tube 6. A pressure pump 7 is installed on the outer wall of the discharge pipe 8. Cleaning mechanism: The cleaning mechanism is located inside the hydrocyclone 2.

[0020] This scheme injects inert gas into the molten aluminum flowing through the feed pipe 3 by activating the air pump 4, causing it to contact the molten aluminum and generate a large number of bubbles. At this time, impurities in the molten aluminum adhere to the surface of the bubbles, thus achieving better separation of impurities from the molten aluminum during the swirling process. Then, the filter screen 13 inside the Y-shaped filter pipe 6 works together with the ceramic foam filter plate 11 inside to perform secondary filtration on the molten aluminum after the initial separation by the hydrocyclone 2. The porous structure of the ceramic foam filter plate 11 is used to finely filter the molten aluminum, removing small particulate impurities and further achieving deep purification of the molten aluminum. At this time, the pressure pump 7 installed on the outer wall of the discharge pipe 8 separates the residual gas in the molten aluminum and discharges the gas through the pressure pump 7, thereby reducing the gas content of the molten aluminum.

[0021] The inner wall of the slag discharge pipe 1 is tapered, which increases the outlet area and makes it easier to discharge impurities from inside the hydrocyclone 2, preventing impurities from accumulating at the slag discharge pipe 1.

[0022] The two flange rings 9 on the bottom outer wall of the special Y-type filter tube 6 have a concave-convex structure. By adopting the concave-convex structure of the flange rings 9, the contact area between the flange rings 9 and the Y-type filter tube 6 and the ceramic foam filter plate 11 is increased, the tightness of the connection is enhanced, and aluminum liquid leakage is prevented.

[0023] A sealing ring 12 is provided between the concave and convex structures of the two special flange rings 9 to further enhance the sealing performance, fill the connection gap, prevent molten aluminum from seeping out from the flange ring 9 connection, and ensure the safety and effectiveness of the purification process.

[0024] Reference Figure 2 and Figure 4In a preferred embodiment, the cleaning mechanism includes spiral guide vanes 16 installed on the inner wall of the hydrocyclone 2, a vibrator 15 is provided inside the hydrocyclone 2, and springs 14 are connected to the outer walls on both sides of the vibrator 15.

[0025] The molten aluminum is guided by the spiral guide vanes 16 installed on the inner wall of the hydrocyclone 2 to move on the inner wall of the hydrocyclone 2 and form a spiral flow. While increasing the centrifugal force, it makes it easier for impurities to move to the wall of the hydrocyclone 2. At this time, the vibrator 15 installed inside the hydrocyclone 2 is activated. The vibrator 15 drives the inner wall of the hydrocyclone 2 to vibrate, thereby reducing the accumulation of impurities on the inner wall of the hydrocyclone 2. At this time, the spring 14 undergoes elastic deformation with the operation of the vibrator 15, thereby buffering the vibration, reducing the impact on the main structure of the hydrocyclone 2, and completely discharging the impurities remaining on the cavity wall of the hydrocyclone 2.

[0026] The surface of the spiral guide vane 16 has a groove structure, which increases the friction between the aluminum liquid and the spiral guide vane 16, making the aluminum liquid form a more stable spiral flow. At the same time, the groove guides impurities, making it easier to separate impurities from the aluminum liquid.

[0027] Reference Figure 2 and Figure 3 In a preferred embodiment, the pull rod 10 is a removable structure, through which the filter screen 13 is pulled out, thereby facilitating the maintenance of the internal components of the Y-shaped filter tube 6.

[0028] Working Principle: During operation, molten aluminum first enters the feed pipe 3. An air pump 4 installed on the outer wall of the feed pipe 3 injects inert gas into the molten aluminum, generating bubbles. Impurities in the molten aluminum adhere to the surface of these bubbles. The molten aluminum, now containing impurities, enters the hydrocyclone 2. Guided by the spiral guide vanes 16, the molten aluminum forms a spiral flow. The grooves on the surface of the spiral guide vanes 16 increase the friction between the molten aluminum and the vanes, making the molten aluminum more stable during the swirling process. Secondly, under the action of centrifugal force, denser impurities and gases in the molten aluminum move downwards along the wall of the hydrocyclone 2 and are eventually discharged through the slag discharge pipe 1. The conical structure on the inner wall of the slag discharge pipe 1 accelerates the movement and discharge of impurities towards the outlet, reducing the probability of blockage. Simultaneously, another portion of impurities moves upwards with the molten aluminum along with the spiral flow inside the hydrocyclone 2 and enters the overflow pipe 5. Here, the filter screen 13 in the Y-shaped filter pipe 6 initially blocks some of the impurities. As the molten aluminum continues to flow downwards, it passes through the ceramic foam filter plate 11, where fine impurities are finely filtered. After secondary filtration, the molten aluminum flows into the discharge pipe 8. At this point, the pressure pump 7 is activated to remove residual gas from the molten aluminum, thus reducing the gas content. As the hydrocyclone 2 operates, some impurities accumulate on its inner wall. The vibrator 15 inside the hydrocyclone 2 is activated to vibrate the inner wall, shaking off the impurities and discharging them from the slag discharge pipe 1, thereby reducing the accumulation of impurities on the inner wall of the hydrocyclone 2. Simultaneously, the spring 14 undergoes elastic deformation with the operation of the vibrator 15, thus providing a damping effect on the hydrocyclone 2. When maintenance or replacement of the filter components inside the Y-type filter tube 6 is required, the filter components are pulled out by pulling the lever 10, facilitating maintenance of the components inside the Y-type filter tube 6.

[0029] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A structure for purifying aluminum liquid for aluminum alloy die casting with cyclone separation, comprising a slag discharge pipe (1), a cyclone (2) connected to the top outer wall of the slag discharge pipe (1), and an overflow pipe (5) connected to the top outer wall of the cyclone (2), characterized in that, Also includes: Purification Mechanism: The purification mechanism includes a feed pipe (3) connected to the outer wall of the hydrocyclone (2), an air pump (4) installed on the outer wall of the feed pipe (3), a Y-shaped filter pipe (6) connected to the end of the overflow pipe (5) away from the feed pipe (3), two flange rings (9) provided on the bottom outer wall of the Y-shaped filter pipe (6), the bottom of the Y-shaped filter pipe (6) is fixed to one of the flange rings (9), a filter screen (13) is provided on the bottom inner wall of the Y-shaped filter pipe (6), the filter screen (13) is fixed to the top outer wall of one of the flange rings (9), a pull rod (10) is fixed on its bottom outer wall, the same ceramic foam filter plate (11) is installed on the bottom inner wall of the filter screen (13) and the top outer wall of one of the flange rings (9), a discharge pipe (8) is connected to one side of the Y-shaped filter pipe (6), and a pressure pump (7) is installed on the outer wall of the discharge pipe (8). Cleaning mechanism: The cleaning mechanism is located inside the cyclone separator (2).

2. The aluminum alloy die-casting molten aluminum purification structure with cyclone separation according to claim 1, characterized in that, The inner wall of the slag discharge pipe (1) is a conical structure.

3. The aluminum alloy die-casting molten aluminum purification structure with cyclone separation according to claim 1, characterized in that, The two flange rings (9) on the bottom outer wall of the Y-shaped filter tube (6) have a concave-convex structure.

4. The aluminum alloy die-casting molten aluminum purification structure with cyclone separation according to claim 1, characterized in that, A sealing ring (12) is provided between the concave and convex structures of the two flange rings (9).

5. The aluminum alloy die-casting molten aluminum purification structure with cyclone separation according to claim 1, characterized in that, The cleaning mechanism includes spiral guide vanes (16) installed on the inner wall of the hydrocyclone (2), and a vibrator (15) is provided inside the hydrocyclone (2). Springs (14) are connected to the outer walls on both sides of the vibrator (15).

6. The aluminum alloy die-casting molten aluminum purification structure with cyclone separation according to claim 5, characterized in that, The surface of the spiral guide vane (16) has a groove structure.

7. The aluminum alloy die-casting molten aluminum purification structure with cyclone separation according to claim 1, characterized in that, The pull rod (10) is a retractable structure.

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