Impurity coarse filtering device for recycling aluminum remelting

Abstract

The utility model relates to aluminium alloy smelting purification equipment technical field discloses an impurity coarse filter device for regenerative aluminium remelting, it includes flume, filter and flume clamping, the flume clamping is correspondingly set up at the both sides of flume, the filter is inserted in the flume clamping and is stably inserted in the flume under the positioning effect of flume clamping, the filter is equipped with the filter channel of taper, is used to realize the impurity coarse filter of regenerative aluminium remelting, the one end of filter channel opening is larger and is aluminium water import, and the one end of opening is smaller and is aluminium water export. In the filtering process, the impurity will be attached to the rough surface of filter, realizes the filtering effect through the synergic mechanism of " mechanical entrapment " and " interface effect " and filters effect number. When needing to clean, can use alkali solution to clean filter, removes the impurity and aluminium skin attached to the surface, can be repeatedly used after drying, and the repeated use is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum alloy smelting and purification equipment, specifically to a coarse filtration device for impurities in recycled aluminum remelting. Background Technology

[0002] With the widespread application of aluminum alloys in industries such as automobiles, machinery, and aerospace, the recycling of waste aluminum has become an important way to solve environmental pollution and resource waste. However, in the production process of recycled aluminum, some impurities are difficult to control effectively, resulting in the performance of the processed aluminum alloys failing to meet application requirements. In particular, during the smelting and purification processes of aluminum alloys, traditional purification technologies are unable to provide high-quality raw materials for die casting and other production processes at a low cost.

[0003] Currently, most recycled aluminum after secondary smelting still contains inclusions or impurities similar to aluminum alloys that are difficult to remove during the refining process. Existing filtration devices typically use a method of directly filtering aluminum water through a filter plate, but this method has many problems: using two filter plates with significantly different mesh sizes increases the cost of auxiliary materials; using only one filter plate with a smaller mesh size may result in impurities not being completely filtered, leading to a decrease in the quality of the aluminum rods; while using a larger mesh size may clog the filter plate due to more impurities, causing insufficient flow and even posing safety risks. Utility Model Content

[0004] The purpose of this utility model is to provide a coarse filtration device for remelted aluminum impurities that has a good impurity filtration effect and is easy to reuse, and to provide at least a beneficial option or create conditions for solving one or more technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A coarse filtration device for impurities in remelted recycled aluminum includes a flow channel, a filter, and flow channel holders. The flow channel holders are correspondingly arranged on both sides of the flow channel. The filter is inserted into the flow channel holders and stably inserted into the flow channel under the positioning action of the flow channel holders. The filter is provided with a conical filter channel for coarse filtration of impurities in remelted recycled aluminum. The end with the larger opening of the filter channel is the aluminum inlet, and the end with the smaller opening is the aluminum outlet.

[0007] More preferably, the flow channel is a steel plate channel, and the flow channel locking positions are at least a pair, correspondingly welded to two opposite sides of the steel plate channel. In some embodiments, multiple pairs of flow channel locking positions can also be provided to install multiple filters or to position a filter using multiple pairs of flow channel locking positions.

[0008] More preferably, the opening width of the flow channel slot is greater than the thickness of the filter, and the gap between the bottom of the slots of the two corresponding flow channel slots is greater than the width of the filter, so as to facilitate the removal and insertion of the filter.

[0009] More preferably, the bottom of the filter contacts the bottom of the flow channel, and there is a gap between the two sides of the filter and the sidewall of the flow channel. The height of the filter is greater than the depth of the flow channel. After the filter is installed on the flow channel, the upper end of the filter protrudes above the flow channel locking position to facilitate the removal and locking of the filter.

[0010] More preferably, the filter is a plate-shaped structure integrally processed from alumina or silicon carbide.

[0011] More preferably, the filter channel is a conical channel, with the larger end of the conical channel having an opening diameter of 20-40 mm and the smaller end having an opening diameter of 10-20 mm; the overall thickness of the filter is 100-200 mm.

[0012] More preferably, both the filter channel and the filter plate surface have a rough structure.

[0013] More preferably, the filter channels are arranged in an array on the filter.

[0014] In this utility model, the external dimensions of the filter are designed according to the shape of the flow channel, preferably a rectangle or square that matches the shape of the flow channel. The filter is placed in the flow channel with its bottom in contact with the flow channel and a 10mm distance on each side for easy handling. The height exceeds the height of the flow channel itself by 30-70mm. The flow channel is connected to the upper side of the filter, mainly to prevent the filter from tilting or misaligning.

[0015] In this invention, the opening diameter at the larger end of the conical channel is 20-40 mm, and the opening diameter at the smaller end is 10-20 mm. The overall thickness of the filter is preferably 100-200 mm, varying depending on the size of the flow channel, to ensure the overall strength and filtration effect of the filter. The shape and size of the filter can be adjusted according to the specific shape of the flow channel and the liquid level to meet the needs of different specifications of recycled aluminum processing.

[0016] During operation, molten aluminum enters the flow channel from the larger opening end and flows out from the smaller opening end after being filtered through the conical channel of the filter. During filtration, impurities adhere to the rough surface of the filter. The filtration effect is achieved through a synergistic mechanism of "mechanical interception" and "interfacial interaction," resulting in a high filtration efficiency. When cleaning is required, an alkaline solution can be used to clean the filter, removing surface impurities and aluminum residue. After drying, it can be reused conveniently.

[0017] In this invention, the tapered channel of the filter is a gradually decreasing channel, with the pipe diameter gradually decreasing from the aluminum inlet end to the aluminum outlet end, and the pipe diameter at the aluminum inlet end is larger than that at the aluminum outlet end, ensuring a large filtration area while ensuring the smooth passage of aluminum fluid.

[0018] In this invention, the filter needs to be dried and heated before use to ensure that there is no residual moisture inside, so as to avoid the rapid drop in temperature of the molten aluminum.

[0019] The technical solution provided by this utility model has at least the following technical effects or advantages.

[0020] I. This utility model adopts a conical tube design formed by processing alumina or silicon carbide. Through the combination mechanism of "mechanical interception" and "interface action", it achieves efficient filtration and removal of impurities, overcoming the problems of high auxiliary material costs and poor filtration effect caused by the need to use multiple filter plates in traditional plate filter equipment.

[0021] Second, the tapered tube design of this utility model allows the molten aluminum fluid to pass through smoothly during the flow process, avoiding the problem of insufficient flow caused by impurities clogging the traditional filter plate, and effectively improving the quality of subsequent casting processes.

[0022] Third, the design of maintaining the original roughness of the alumina or silicon carbide surface in this utility model significantly improves the adhesion between impurities and the pipe wall by increasing the contact area and friction, making it easier for impurities to be intercepted and removed, and effectively solving the problem of insufficient filtration accuracy in the prior art.

[0023] Fourth, the conical tube design of this utility model can be flexibly designed and adjusted in shape and size according to the shape of the flow channel and the liquid level, without the need for additional modification of the flow channel. Furthermore, multiple filter devices can be stacked and used, which has good adaptability and practicality, and can meet the needs of different batches and specifications of recycled aluminum processing.

[0024] Fifth, the filter of this utility model can easily remove impurities and aluminum scale attached to its surface through alkaline washing, realizing the reuse of the equipment, avoiding frequent replacement, and reducing maintenance costs.

[0025] Other beneficial effects or technical advantages of this invention will become more apparent in the following description or practice. Attached Figure Description

[0026] Figure 1 The diagram shown is a structural schematic of the impurity coarse filtration device provided in Embodiment 1 of this utility model.

[0027] Figure 2 The diagram shown is a cross-sectional view of the coarse impurity filtration device provided in Embodiment 1 of this utility model.

[0028] Figure 3 The diagram shown is a structural schematic of the impurity coarse filtration device provided in Embodiment 2 of this utility model.

[0029] Figure 4 The diagram shown is a cross-sectional view of the coarse impurity filtration device provided in Embodiment 2 of this utility model.

[0030] Explanation of the reference numerals in the attached figures.

[0031] 1: Flow channel, 2: Filter, 3: Flow channel holder, 4: Conical channel. Detailed Implementation

[0032] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, making the technical solution and beneficial effects of this utility model clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention.

[0034] Example 1.

[0035] Reference Figure 1 , Figure 2 As shown, a coarse filtration device for impurities in remelted aluminum includes a flow channel 1, a filter 2, and a flow channel locking position 3. The flow channel locking position 3 is disposed on both sides of the flow channel 1. The filter 2 is stably inserted into the flow channel 1 under the positioning action of the flow channel locking position 3 to achieve coarse filtration of impurities in remelted aluminum.

[0036] The flow channel 1 has a square cross-section and an internal dimension of 300mm in width and 300mm in height. The filter 2 is made from a single piece of alumina, with a width of 280mm (20mm narrower than the flow channel) and a height of 350mm (50mm higher than the top of the flow channel). The filter 2 is 120mm thick. The filter 2 is placed inside the flow channel 1, with its bottom in contact with the flow channel 1 and a 10mm distance on each side for easy placement and removal. Its height exceeds the height of the flow channel 1 by 50mm, mainly to facilitate connection with the flow channel 1 via the flow channel locking slot 3, preventing tilting or misalignment.

[0037] In this embodiment, the flow channel 1 is preferably a steel plate channel. Two corresponding flow channel slots 3 are welded on the steel plates on both sides of the flow channel 1. The filter 2 is inserted from the middle of the flow channel slot 3. The inner width of the flow channel slot 3 is 125mm, and the bottom distance between the two flow channel slots 3 is 290mm to ensure that the filter device can be inserted and removed smoothly.

[0038] In this embodiment, the filter 2 preferably has a 6×7 array of conical channels 4, through which the recycled aluminum remelting molten aluminum flows for filtration. More preferably, the conical channel 4 is a circular conical channel with an inner diameter of 30mm at the larger end and an inner diameter of 15mm at the smaller end.

[0039] This embodiment provides a coarse filtration device for remelting recycled aluminum. The filter 2 is made entirely of alumina material and has conical channels machined inside, with the surface of the conical channels maintaining its original roughness. Molten aluminum enters from the larger conical circle, passes through the conical channels of the filter, and flows out from the smaller conical circle. During the filtration process, impurities adhere to the rough surface of the filter, achieving a filtration effect through a synergistic mechanism of "mechanical interception" and "interfacial interaction." When cleaning is required, an alkaline solution can be used to clean the filter, removing the impurities and aluminum scale adhering to the surface. After drying, it can be reused.

[0040] The tapered channel of filter 2 adopts a gradual design, with the pipe diameter gradually decreasing from the aluminum inlet end to the aluminum outlet end. The pipe diameter at the aluminum inlet end is larger than that at the aluminum outlet end to ensure smooth passage of aluminum fluid while ensuring a larger filtration area.

[0041] Example 2.

[0042] Reference Figure 3 , Figure 4 As shown, a coarse filtration device for impurities in remelted aluminum includes a flow channel 1, a filter 2, and a flow channel locking position 3. The flow channel locking position 3 is disposed on both sides of the flow channel 1. The filter 2 is stably inserted into the flow channel 1 under the positioning action of the flow channel locking position 3 to achieve coarse filtration of impurities in remelted aluminum.

[0043] This embodiment provides a coarse filtration device for impurities in remelted recycled aluminum, which is basically the same as that in Embodiment 1, except that: 1) the cross-section of the flow channel 1 is rectangular, with an inner width of 400mm and an inner height of 300mm; 2) the filter 2 is made of a single piece of silicon carbide, with a width 20mm narrower than the flow channel, a width of 380mm, a height 50mm higher than the top of the flow channel, a height of 350mm, and a thickness of 120mm; 3) the tapered channels 4 on the filter 2 are arranged in a 6×9 array, with the inner diameter of the large circular end of the tapered channel being 36mm and the inner diameter of the small circular end being 18mm.

[0044] The impurity coarse filtration device for remelting recycled aluminum provided in this embodiment has similar technical effects to that of Embodiment 1.

[0045] It should also be noted that in the description of this utility model, directional terms such as "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and 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. They should not be construed as limiting the specific protection scope of this utility model.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions made using techniques known in the art based on this utility model all fall within the protection scope of this utility model, which should be defined by the claims and their equivalents. Parts not described in the specific embodiments are all prior art or common knowledge.

Claims

1. A coarse filtration device for impurities in recycled aluminum remelting, characterized in that, The system includes a flow channel, a filter, and flow channel holders. The flow channel holders are correspondingly arranged on both sides of the flow channel. The filter is inserted into the flow channel holders and stably inserted into the flow channel under the positioning effect of the flow channel holders. The filter is provided with a conical filter channel for coarse filtration of impurities in the remelted aluminum. The end with the larger opening of the filter channel is the aluminum inlet, and the end with the smaller opening is the aluminum outlet.

2. The impurity coarse filtration device for remelting recycled aluminum according to claim 1, characterized in that, The flow channel is a steel plate channel, and the flow channel positioning is at least one pair, which are welded to the two opposite sides of the steel plate channel.

3. A coarse impurity filtration device for remelting recycled aluminum according to claim 1 or 2, characterized in that, The opening width of the flow channel slot is greater than the thickness of the filter, and the gap between the bottom of the slots of the two corresponding flow channel slots is greater than the width of the filter.

4. A coarse impurity filtration device for remelting recycled aluminum according to claim 1 or 2, characterized in that, The bottom of the filter contacts the bottom of the flow channel, and there are gaps between the two sides of the filter and the side walls of the flow channel. The height of the filter is greater than the depth of the flow channel. After the filter is installed on the flow channel, the upper end of the filter protrudes above the flow channel mounting position.

5. The impurity coarse filtration device for remelting recycled aluminum according to claim 1, characterized in that, The filter is a plate-shaped structure integrally processed from alumina or silicon carbide.

6. The impurity coarse filtration device for remelting recycled aluminum according to claim 1, characterized in that, The filter channel is a conical channel with an opening diameter of 20-40 mm at the larger end and 10-20 mm at the smaller end; the overall thickness of the filter is 100-200 mm.

7. A coarse impurity filtration device for remelting recycled aluminum according to claim 1 or 5, characterized in that, Both the filter channel and the filter plate have a rough structure.

8. A coarse impurity filtration device for remelting recycled aluminum according to claim 1 or 5, characterized in that, The filter channels are arranged in an array on the filter.

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