Simple steel structure molten aluminum flow tank filtering device

Abstract

This utility model relates to the technical field of aluminum alloy smelting and purification equipment, and discloses an aluminum molten metal flow channel filtration device, including a flow channel, a filter frame, and a filter screen. The filter frame consists of an outer frame, a supporting beam, fixing nails, and a fixing beam. The outer frame matches the cross-sectional shape of the flow channel, and the two sides and bottom of the outer frame are flush with the inner wall of the flow channel. The supporting beam is located inside the outer frame and spans across the outer frame. The fixing nails are located on one side of the outer frame to fix the filter screen. The fixing beam extends to both sides of the outer frame to fix the filter frame and the flow channel. The filter screen completely wraps around the filter frame from bottom to top, with the lower end of the filter screen flush with the bottom of the flow channel, and the upper end of the filter screen not lower than the top opening height of the flow channel. The aluminum molten metal flow channel filtration device provided by this utility model can achieve better filtration effect and the installation and fixation between the filter screen and the frame is more stable.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum alloy smelting and purification equipment, specifically to a simple filtration device installed in the outlet trough of the furnace body. Background Technology

[0002] During the aluminum alloy smelting process, slag, flaking refractory materials, coarse impurities, and oxide inclusions generated by the molten aluminum flow into the subsequent casting process, which can lead to ash accumulation in the online degassing box, clogging of the filter plate, and inclusion defects in the product. Therefore, the aluminum alloy casting process with a single-stage filter plate needs to pre-filter the melt in the early stage, such as by adding a filter device in the flow channel.

[0003] In the prior art, a common trough filtration device, as described in Chinese Utility Model Patent Publication No. CN215828844U, includes a trough and at least one filter screen inserted into the trough. The trough cross-section corresponding to the filter screen separates the two ends of the trough and is inclined relative to the bottom of the trough. The two sides of the filter screen are respectively in close contact with the inner walls of the two sides of the trough, and the bottom and top edges of the filter screen are respectively reserved at a certain distance from the bottom and top edges of the trough cross-section. Although the above-mentioned filtration device can effectively filter and remove slag from the surface of molten aluminum, it still has the following defects: the filter screen is only laid in the middle section of the frame, and the filtration effect needs to be improved; furthermore, there is no special fixing structure between the filter screen and the frame, which makes it easy to be displaced and deformed by the molten aluminum during the casting process, affecting the filtration effect. Utility Model Content

[0004] The purpose of this utility model is to provide an aluminum liquid flow channel filter device with better filtration effect and more stable installation and fixation between the filter screen and the frame, so as to provide at least one beneficial option or create conditions to solve 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 molten aluminum flow channel filtration device includes a flow channel and a filter frame, on which a filter screen is installed. The filter frame comprises an outer frame, a supporting beam, fixing nails, and a fixing beam. The outer frame matches the cross-sectional shape of the flow channel, and its sides and bottom are flush with the inner wall of the flow channel. The supporting beam is located inside the outer frame and spans across it. The fixing nails are located on one side of the outer frame to fix the filter screen. The fixing beams extend to both sides of the outer frame to secure the filter frame and the flow channel. The filter screen completely encloses the filter frame from bottom to top, with its lower end flush with the bottom of the flow channel and its upper end not lower than the height of the top opening of the flow channel.

[0007] More preferably, the fixing pin is located on the side of the outer frame facing the fluid flow direction.

[0008] More preferably, the outer frame is a U-shaped steel frame, and the supporting crossbeam, the fixing nail position and the fixing crossbeam are all steel components, welded and fixed to the outer frame.

[0009] More preferably, there are four supporting beams arranged in parallel, and the fixing beam is arranged between the two uppermost supporting beams.

[0010] More preferably, the fixed crossbeam is an extension of the uppermost supporting crossbeam.

[0011] More preferably, the filter screen is made of high-temperature resistant glass fiber cloth, and the mesh size of the filter screen is 10 to 30 mesh.

[0012] More preferably, the filter screen is a single-layer or multi-layer filter screen.

[0013] More preferably, the filter frame is placed in the flow channel at an angle of 20° to 45°, and the tilt direction of the filter frame is the same as the flow direction of the molten aluminum.

[0014] More preferably, stop protrusions that cooperate with the fixed crossbeam are respectively provided on both sides of the flow channel to realize the stop positioning of the filter frame.

[0015] The technical solution provided by this utility model has at least the following technical effects or advantages.

[0016] 1. The filter screen is installed by wrapping the filter frame from bottom to top. The lower part fits the bottom of the flow channel, and the upper part is not lower than the height of the flow channel. There are no empty areas in the top and bottom sections, which ensures that the aluminum liquid can completely pass through the filter screen. It can not only intercept the floating slag on the surface of the aluminum liquid, but also filter the coarse particulate impurities inside the aluminum liquid, resulting in better filtration effect.

[0017] 2. Fixing nails are welded to one side of the filter frame (the side facing the fluid flow direction), which can realize quick replacement, installation and fixation of the filter screen. The installation and fixation between the filter screen and the frame is more stable, and the filter screen will not be displaced by the aluminum liquid during the casting process. At the same time, since multiple support beams are installed on the inner side of the outer frame, the filter screen can be effectively prevented from being displaced and deformed by the scouring during the casting process.

[0018] III. During application, the filter frame is placed in the flow channel at an angle of 20° to 45°, with the tilt direction matching the flow direction of the molten aluminum. The fixed crossbeam is positioned by a raised stop on the flow channel to prevent the filter frame placed in the flow channel from moving. After the molten aluminum flows through the filter screen, slag, flaking refractory materials, coarse impurities, and oxide inclusions generated by the molten aluminum flow are intercepted, ensuring smooth filtration by the ceramic filter plates in subsequent processes, improving casting safety, and significantly reducing the amount of impurities entering the online degassing box, thus reducing maintenance frequency. After casting is completed, the impurities in the flow channel are cleaned, the filter device is removed, and the consumable filter screen is replaced for reuse.

[0019] Other beneficial effects or technical advantages of this invention will become more apparent in the following description or practice. Attached Figure Description

[0020] Figure 1 The diagram shown is a structural schematic of the aluminum liquid flow channel filtration device provided by this utility model.

[0021] Figure 2 The diagram shown is a schematic of the filter frame.

[0022] Explanation of the reference numerals in the attached figures.

[0023] 1: Flow channel, 2: Filter frame, 3: Filter screen.

[0024] 201: Outer frame, 202: Support beam, 203: Fixing nail position, 204: Fixing beam. Detailed Implementation

[0025] 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.

[0026] Additional aspects and advantages of this invention will become apparent in the following description or may be learned by practice of this invention.

[0027] Reference Figure 1 , Figure 2As shown, an aluminum liquid flow channel filtration device includes a flow channel 1, a filter frame 2 that matches the cross-sectional shape of the flow channel 1, and a filter screen 3 fixed on the filter frame 2. The filter frame 2 is composed of an outer frame 201, a supporting beam 202, fixing nails 203, and a fixing beam 204. The outer frame 201 matches the cross-sectional shape of the flow channel 1. The supporting beam 202 is located inside the outer frame 201 and spans across the outer frame 201. The fixing nails 203 are located on one side of the outer frame 201 to fix the filter screen 3 and prevent displacement. The fixing beam 204 extends to both sides of the outer frame 201 to fix the filter frame 2 and the flow channel 1. The filter screen 3 completely wraps around the filter frame 2 from bottom to top. The lower end of the filter screen 3 is attached to the bottom of the flow channel 1, and the upper end of the filter screen 3 is not lower than the top opening height of the flow channel 1.

[0028] Compared with the prior art, the aluminum liquid flow channel filtration device provided by this utility model has the following technical advantages: 1) The filter screen 3 is installed by wrapping the filter frame 2 from bottom to top. The lower part is close to the bottom of the flow channel 1, and the upper part is not lower than the height of the flow channel 1. There are no empty areas in the top and bottom sections, which ensures that the aluminum liquid can completely pass through the filter screen 3. It can not only intercept the floating slag on the surface of the aluminum liquid, but also filter the coarse particulate impurities inside the aluminum liquid, resulting in better filtration effect; 2) A fixing nail position 203 is welded on one side of the filter frame 2 (the side facing the direction of fluid flow), which can realize the quick replacement, installation and fixing of the filter screen 3. The installation and fixing between the filter screen and the frame is more stable, and the filter screen 3 will not be washed away by the aluminum liquid and shifted during the casting process; 3) Multiple supporting beams 202 are installed on the inner side of the outer frame 201, which can effectively prevent the filter screen 3 from being washed away and deformed during the casting process.

[0029] In this embodiment, the outer frame 201 is a U-shaped steel frame. The outer contour width of the outer frame 201 is equal to the inner wall width of the flow channel 1, and the radius of the lower arc of the outer frame 201 is equal to the radius of the bottom arc of the flow channel 1. The supporting beam 202, the fixing nail position 203, and the fixing beam 204 are all steel components, welded and fixed to the outer frame 201. Obviously, those skilled in the art can use outer frames of other materials according to different actual needs, as long as they can meet the high-temperature application requirements of molten aluminum; in addition, the shape of the outer frame 201 will vary depending on the shape of the flow channel, as long as it can completely fit the inner wall of the flow channel 1 after installation, and is not limited to this embodiment.

[0030] Since the filter frame 2 is quickly manufactured by welding the outer frame 201, the supporting beam 202, the fixing nail position 203 and the fixing beam 204, it can be put into use after being quickly wrapped with the filter screen 3. The filter frame 2 is connected across the flow channel 1 by the fixing beam 204, making it easy to install, disassemble and replace consumables. The installation and disassembly time is ≤5 minutes and no bolts are required for fixing.

[0031] In this embodiment, the supporting crossbeams 202 are preferably four arranged in parallel, and the fixing crossbeams 204 are arranged between the two uppermost supporting crossbeams 202; this can maximize the strength of the entire filter frame and improve the fluid impact resistance of the flow channel filter device. In some embodiments, the uppermost supporting crossbeam 202 is extended to serve as the fixing crossbeam 204, so that the uppermost crossbeam has both supporting and fixing functions, making the structure simpler and easier to manufacture and implement.

[0032] In this embodiment, the filter screen 3 is preferably high-temperature resistant glass fiber cloth, and the mesh size of the filter screen 3 is 10 to 30 mesh, which can be adjusted according to the actual situation. The mesh size can be changed by using a single layer or multiple layers of filter screen. It should be noted that, depending on the actual needs, those skilled in the art can use other known or future achievable filter screen materials to replace the high-temperature resistant glass fiber cloth, and are not limited to this embodiment.

[0033] In application, the filter frame 2 is placed in the flow channel 1 at an angle of 20° to 45°, with the tilt direction being the same as the aluminum molten flow direction. The fixed crossbeam 204 is positioned by the protruding stop on the flow channel 1 to prevent the filter frame 2 placed in the flow channel 1 from moving. After the aluminum molten flow passes through the filter screen 3, the slag, flaking refractory material, coarse impurities, and oxide inclusions generated by the aluminum molten flow are intercepted, ensuring smooth filtration of the ceramic filter plate in subsequent processes, improving casting safety, and greatly reducing the amount of impurities entering the online degassing box, thus reducing the frequency of maintenance. After casting is completed, the impurities in the flow channel are cleaned, the filter device is removed, and the consumable filter screen 3 is replaced for reuse.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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. An aluminum molten metal flow channel filtration device, comprising a flow channel and a filter frame, wherein a filter screen is installed on the filter frame; characterized in that, The filter frame consists of an outer frame, a supporting beam, fixing nails, and a fixing beam. The outer frame matches the cross-sectional shape of the flow channel, and the two sides and bottom of the outer frame are attached to the inner wall of the flow channel. The supporting beam is located inside the outer frame and spans across the outer frame. The fixing nails are located on one side of the outer frame to fix the filter screen. The fixing beam extends to both sides of the outer frame to fix the filter frame and the flow channel. The filter screen completely wraps around the filter frame from bottom to top, with the lower end of the filter screen attached to the bottom of the flow channel and the upper end of the filter screen not lower than the height of the top opening of the flow channel.

2. The aluminum liquid flow channel filtration device according to claim 1, characterized in that, The fixing pin is located on the side of the outer frame facing the direction of fluid flow.

3. The aluminum liquid flow channel filtration device according to claim 1, characterized in that, The outer frame is a U-shaped steel frame, and the supporting crossbeam, the fixing nail position and the fixing crossbeam are all steel components, which are welded and fixed to the outer frame.

4. The aluminum liquid flow channel filtration device according to claim 1, characterized in that, The supporting beams are four parallel beams, and the fixing beam is located between the two uppermost supporting beams.

5. The aluminum liquid flow channel filtration device according to claim 1, characterized in that, The fixed crossbeam is an extension of the uppermost supporting crossbeam.

6. The aluminum liquid flow channel filtration device according to claim 1, characterized in that, The filter screen is made of high-temperature resistant glass fiber cloth, and the mesh size of the filter screen is 10 to 30 mesh.

7. The aluminum liquid flow channel filtration device according to claim 1, characterized in that, The filter screen is a single-layer or multi-layer filter screen.

8. The aluminum liquid flow channel filtration device according to claim 1, characterized in that, The filter frame is placed in the flow channel at an angle of 20° to 45°, and the tilt direction of the filter frame is the same as the flow direction of the aluminum liquid.

9. The aluminum liquid flow channel filtration device according to claim 1, characterized in that, Stop protrusions that cooperate with the fixed crossbeam are respectively provided on both sides of the flow channel to realize the stop positioning of the filter frame.

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