Pipe filter for aluminium-titanium casting and rolling line

Abstract

The application discloses a tubular filter for aluminum-titanium casting and rolling line, which comprises a molten aluminum flow tank and a filter box, and the inside of the filter box is provided with upper and lower partition plates arranged in parallel, the upper and lower partition plates and the filter box form an upper chamber of aluminum solution, the lower partition plate and the filter box form a lower chamber of aluminum solution, a plurality of ceramic filter tubes are arranged through the upper and lower chambers of aluminum solution, the ceramic filter tubes pass through the upper and lower partition plates, the upper ends of the ceramic filter tubes are arranged to extend out of the upper partition plate, the lower ends of the ceramic filter tubes are arranged to extend out of the lower partition plate, and the lower ends of the ceramic filter tubes are provided with sealing members; and the sealing members block the through holes on the lower partition plate after the ceramic filter tubes are lifted and rotated. The application is convenient to use, realizes on-line replacement or cleaning of the ceramic filter tubes, and reduces downtime.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of aluminum solution smelting processing, and particularly relates to a tubular filter for an aluminum-titanium casting and rolling line. BACKGROUND

[0002] With the vigorous development of the aluminum processing industry, a large number of aluminum alloy casting and processing equipment are purchased by domestic production and processing plants. The purification of aluminum melt generally adopts a method of filtering metal or non-metal substances by neutral or active materials. A commonly used method is to install a microporous filter plate made of foamed ceramic in a filter. The ceramic filter plate is made of a ceramic slurry composed of aluminum oxide and chromium oxide. However, the ceramic filter plate is brittle and easy to break, and can be used only once. The filtering performance is low, and the production requirements of large casting capacity or high-precision aluminum processing cannot be met. The ceramic tube is a granular refractory material with alumina as the main component as the skeleton, and low-silicon glass as the binder. The ceramic tube is made by pressing, low-temperature drying and high-temperature sintering. The aluminum melt penetrates from the outer surface of the ceramic tube to the inside of the tube. When the melt passes through the tortuous fine pores of different sizes in the ceramic tube, the inclusions in the melt are blocked, settled, and subjected to the adsorption of the medium surface and the van der waals force, so that the inclusion particles in the melt are filtered out. In the existing ceramic filter tube, the filter tube surface layer will intercept inclusions to form filter cake and block the filter channel. The pore size of the tubular filter is too small, so that the aluminum water is difficult to penetrate into the inside of the filter tube group. At the same time, aluminum titanium boron wires are added in front of the tubular filter. The TiB2 particles of the aluminum titanium boron wire are about 1-5 microns in size and are easy to clump and aggregate. Therefore, the TiB2 aggregates are easy to accumulate in the channel of the tubular filter, affecting the permeability and the service life of the tubular filter. Therefore, the ceramic filter tube needs to be purged or replaced.

[0003] A patent with the authorized announcement number CN210261926U discloses a tubular filter device for aluminum melt filtering, which comprises a filter box body and a box cover arranged on the top of the filter box body. The filter box body is sequentially provided with an outer shell, a heat preservation layer and a refractory lining from the outside to the inside. The refractory lining is provided with a filter tank, an outlet flow channel connected with the filter tank and a filter tube group arranged in the filter tank. The filter box body is provided with a liquid inlet pipeline connected with the filter tank and a liquid outlet pipeline connected with the outlet flow channel. The box cover is provided with a heating device. The bottom of the filter box body is provided with a pulse blowing device connected with the bottom of the filter tank. The controlled end of the pulse blowing device is connected with a controller. The device blows inert gas to the filter tube group to remove the inclusions adhered to the surface of the filter tube group. However, the use effect is general. The pulse blowing device can only blow the filter tubes near the pulse blowing device. The filter tubes far from the pulse blowing device have poor blowing effect. The filter tubes need to be replaced after long-time use. When the filter tubes are replaced, the filter tube group is located in the filter tank, so that the aluminum solution needs to be emptied before the filter tubes can be replaced. The machine needs to be stopped for a long time, which delays the processing time and needs to be further improved. SUMMARY

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a tubular filter for aluminum-titanium casting and rolling lines. It is easy to use, realizes online replacement or cleaning of ceramic filter tubes, reduces downtime, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tubular filter for an aluminum-titanium casting and rolling line, comprising an aluminum melt flow tank and a filter box. The filter box contains parallel upper and lower partitions, which together form an upper chamber for the molten aluminum. The lower partition and the filter box form a lower chamber for the molten aluminum. Multiple ceramic filter tubes are installed between the upper and lower chambers of the molten aluminum. Each ceramic filter tube has a closed upper end and an open lower end. The ceramic filter tubes pass through the upper and lower partitions, with the upper end extending beyond the upper partition and the lower end extending beyond the lower partition. A sealing element is provided at the lower end of each ceramic filter tube. When the ceramic filter tube is lifted and rotated, the sealing element correspondingly seals the through-hole on the lower partition.

[0006] The sealing element includes a disc, with a sealing sleeve on the upper part of the disc, a threaded sleeve on the upper part of the sealing sleeve, and multiple cylinders spaced apart inside the threaded sleeve; the lower part of the ceramic filter tube has a liquid outlet groove, the lower end of the ceramic filter tube is adapted to the threaded sleeve, and the lower part of the ceramic filter tube also has an L-shaped groove adapted to the cylinders; the lower end face of the lower partition plate has a sealing groove corresponding to the ceramic filter tube, the sealing groove is adapted to the sealing sleeve, and the upper part of the sealing groove also has a threaded groove, which is adapted to the threaded sleeve.

[0007] Preferably, the upper part of the ceramic filter tube is provided with a conical block, and the upper plate surface of the upper partition is provided with a conical groove that matches the conical block.

[0008] Preferably, the sealing sleeve has an outer conical surface, and the sealing groove is a conical groove adapted to the outer conical surface.

[0009] Preferably, the distance between the aluminum molten liquid surface in the upper chamber of the aluminum molten liquid and the upper partition is 10-20cm, and the lower surface of the upper partition is also provided with multiple heating silicon carbide rods.

[0010] Preferably, the aluminum liquid flow channel is located on one side of the filter box, and the aluminum liquid flow channel is connected to the upper chamber of the aluminum melt through a flow channel.

[0011] Preferably, the filter box is provided with an outer shell and an insulating inner lining from the outside to the inside; the filter box also includes a lid, which is placed on the top of the filter box.

[0012] Preferably, the depth of the liquid outlet groove is higher than the height of the threaded sleeve.

[0013] Preferably, the lower side of the filter box is provided with an outlet flow channel communicating with the lower chamber of the molten aluminum, and the outlet flow channel is provided with a sealing plug.

[0014] Preferably, the vertical groove of the L-shaped groove extends to the lower end face of the ceramic filter tube.

[0015] Preferably, the height of the threaded sleeve is less than the depth of the threaded groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are: convenient to use; the ceramic filter tube is lifted so that the threaded sleeve abuts against the threaded groove, and then the ceramic filter tube is rotated so that the threaded groove and the threaded sleeve are threadedly engaged. At this time, the sealing sleeve blocks the sealing groove to achieve a seal. Then the ceramic filter tube is rotated in the opposite direction so that the cylinder is dislodged from the L-shaped groove. After the ceramic filter tube is removed, the aluminum molten material will not enter the lower aluminum molten material chamber through the hole of the lower partition plate. Other ceramic filter tubes work normally. That is, the aluminum molten material in the upper aluminum molten material chamber enters through other ceramic filter tubes and then flows into the lower aluminum molten material chamber through the liquid outlet groove. There is no need to stop the machine to replace it. Replacing one ceramic filter tube does not affect the operation of other ceramic filter tubes. It realizes online replacement or cleaning of ceramic filter tubes and reduces downtime. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is an enlarged schematic diagram of the structure at point A in this invention;

[0019] Figure 3 This is an enlarged schematic diagram of the structure at point B in this invention;

[0020] Figure 4 This is a partial structural diagram of the present invention.

[0021] In the diagram: 1 Aluminum liquid flow channel, 2 Filter box, 2.1 Outer shell, 2.2 Insulation lining, 2.3 Box cover, 3 Flow channel, 4 Lower partition, 4.1 Sealing groove, 4.2 Threaded groove, 5 Seal, 5.1 Disc, 5.2 Sealing sleeve, 5.3 Threaded sleeve, 5.4 Cylindrical, 6 Sealing plug, 7 Upper partition, 7.1 Conical groove, 8 Ceramic filter tube, 8.1 Conical block, 8.2 Liquid outlet channel, 8.3 L-shaped channel, 9 Heating silicon carbide rod. Implementation

[0022] The technical solution of the present invention will now be described with reference to the accompanying drawings of the embodiments of the present invention. In the description, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicating directions or positional relationships, are only used to correspond to the accompanying drawings of the present invention for the purpose of facilitating the description of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0023] Please see Figures 1-4This invention provides a technical solution: a tubular filter for an aluminum-titanium casting and rolling line, comprising an aluminum melt flow tank 1 and a filter box 2. The filter box 2 has an upper partition 7 and a lower partition 4 arranged in parallel inside, forming an upper chamber for the molten aluminum with the filter box 2; the lower partition 4 forms a lower chamber for the molten aluminum with the filter box 2. Multiple ceramic filter tubes 8 are installed through the upper and lower chambers of the molten aluminum. The upper end of each ceramic filter tube 8 is closed while its lower end is open. The ceramic filter tube 8 passes through the upper partition 7 and the lower partition 4, with its upper end extending out of the upper partition 7 and its lower end extending out of the lower partition 4. Both the upper and lower partitions 7 and 4 have through holes adapted to the ceramic filter tubes 8, allowing the ceramic filter tubes 8 to be vertically removed from the upper and lower partitions 7 and 4. A sealing element 5 is provided at the lower end of each ceramic filter tube 8; when the ceramic filter tube 8 is lifted and rotated, the sealing element 5 correspondingly seals the through holes on the lower partition 4.

[0024] like Figure 3 and Figure 4 As shown, the sealing element 5 includes a disc 5.1, a sealing sleeve 5.2 on the upper part of the disc 5.1, a threaded sleeve 5.3 on the upper part of the sealing sleeve 5.2, and multiple cylinders 5.4 spaced apart inside the threaded sleeve 5.3; the lower part of the ceramic filter tube 8 has a liquid outlet groove 8.2, the lower end of the ceramic filter tube 8 is adapted to the threaded sleeve 5.3, and the lower part of the ceramic filter tube 8 also has an L-shaped groove 8.3 adapted to the cylinders 5.4; the lower end face of the lower partition plate 4 is provided with a sealing groove 4.1 corresponding to the ceramic filter tube 8, the sealing groove 4.1 is adapted to the sealing sleeve 5.2, and the sealing groove 4. The upper part of 1 is also provided with a threaded groove 4.2, and the threaded sleeve 5.3 is adapted to the threaded groove 4.2; the ceramic filter tube 8 is lifted so that the threaded sleeve 5.3 abuts against the threaded groove 4.2, and then the ceramic filter tube 8 is rotated so that the threaded groove 4.2 and the threaded sleeve 5.3 are threadedly engaged. At this time, the sealing sleeve 5.2 blocks the sealing groove 4.1 to achieve a seal. Then the ceramic filter tube 8 is rotated in the opposite direction so that the cylinder 5.4 is dislodged from the L-shaped groove 8.3. Then the ceramic filter tube 8 is taken out. The aluminum melt will not enter the lower aluminum melt chamber through the hole of the lower partition 4, and other ceramic filter tubes work normally.

[0025] It should be noted that when the ceramic filter tube 8 is lifted so that the threaded sleeve 5.3 abuts against the threaded groove 4.2, since the cylinder 5.4 is located in the horizontal groove of the L-shaped groove 8.3, when the ceramic filter tube 8 rotates, the L-shaped groove 8.3 drives the sealing element 5 to rotate through the cylinder 5.4, thereby realizing the threaded connection between the threaded sleeve 5.3 and the threaded groove 4.2.

[0026] Furthermore, the upper part of the ceramic filter tube 8 is provided with a conical block 8.1, and the upper plate surface of the upper partition 7 is provided with a conical groove 7.1 that matches the conical block 8.1. The conical block 8.1 and the conical groove 7.1 match each other, which serves both a sealing function and a positioning function.

[0027] Furthermore, the sealing sleeve 5.2 has an outer conical surface, and the sealing groove 4.1 is a conical groove that is adapted to the outer conical surface. The sealing effect is improved by the fit of the conical surface.

[0028] Furthermore, the distance between the surface of the molten aluminum in the upper chamber of the molten aluminum and the upper partition 7 is 10-20cm to ensure that the molten aluminum does not exceed the upper partition 7 and overflow. The lower surface of the upper partition 7 is also equipped with multiple heating silicon carbide rods 9 to preheat the molten aluminum entering the upper chamber of the molten aluminum to increase the filtration effect of the molten aluminum.

[0029] Furthermore, the aluminum liquid flow channel 1 is located on one side of the filter box 2, and the aluminum liquid flow channel 1 is connected to the upper chamber of the aluminum melt through the flow channel 3.

[0030] Furthermore, the filter box 2 is provided with an outer shell 2.1 and an insulating inner lining 2.2 from the outside to the inside to reduce heat loss; the filter box 2 also includes a cover 2.3, which is placed on the top of the filter box 2.

[0031] Furthermore, the depth of the outlet tank 8.2 is higher than the height of the threaded sleeve 5.3, ensuring that the molten aluminum flows out through the outlet tank 8.2 and preventing the threaded sleeve 5.3 from clogging the outlet tank 8.2;

[0032] Furthermore, the lower side of the filter box 2 is provided with an outlet flow channel that communicates with the lower chamber of the molten aluminum, and the outlet flow channel is provided with a sealing plug 6;

[0033] In addition, the vertical groove of the L-shaped groove 8.3 extends to the lower end face of the ceramic filter tube 8, that is, the cylinder 5.4 can be dislodged from the vertical groove of the L-shaped groove 8.3; the height of the threaded sleeve 5.3 is less than the groove depth of the threaded groove 4.2, ensuring that the sealing sleeve 5.2 can abut against the sealing groove 4.1 when the threaded sleeve 5.3 and the threaded groove 4.2 are engaged.

[0034] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims within this invention, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A tubular filter for an aluminum-titanium casting and rolling line, comprising an aluminum molten metal flow channel (1) and a filter box (2), characterized in that: The filter box (2) is provided with an upper partition (7) and a lower partition (4) arranged in parallel inside. The upper partition (7) and the lower partition (4) together with the filter box (2) form an upper chamber of molten aluminum. The lower partition (4) together with the filter box (2) form a lower chamber of molten aluminum. Multiple ceramic filter tubes (8) are provided through the upper chamber of molten aluminum and the lower chamber of molten aluminum. The upper end of the ceramic filter tube (8) is closed and the lower end is open. The ceramic filter tube (8) passes through the upper partition (7) and the lower partition (4). The upper end of the ceramic filter tube (8) extends out of the upper partition (7) and the lower end of the ceramic filter tube (8) extends out of the lower partition (4). The lower end of the ceramic filter tube (8) is provided with a sealing element (5). When the ceramic filter tube (8) is lifted and rotated, the sealing element (5) seals the through hole on the lower partition (4). The sealing element (5) includes a disc (5.1), a sealing sleeve (5.2) on the upper part of the disc (5.1), a threaded sleeve (5.3) on the upper part of the sealing sleeve (5.2), and a plurality of cylinders (5.4) spaced apart inside the threaded sleeve (5.3); the lower part of the ceramic filter tube (8) is provided with a liquid outlet groove (8.2), the lower end of the ceramic filter tube (8) is adapted to the threaded sleeve (5.3), and the lower part of the ceramic filter tube (8) is also provided with an L-shaped groove (8.3) adapted to the cylinder (5.4); the lower end face of the lower partition plate (4) is provided with a sealing groove (4.1) corresponding to the ceramic filter tube (8), the sealing groove (4.1) is adapted to the sealing sleeve (5.2), the upper part of the sealing groove (4.1) is also provided with a threaded groove (4.2), and the threaded sleeve (5.3) is adapted to the threaded groove (4.2).

2. The tubular filter for aluminum-titanium casting and rolling lines according to claim 1, characterized in that: The upper part of the ceramic filter tube (8) is provided with a conical block (8.1), and the upper plate surface of the upper partition (7) is provided with a conical groove (7.1) that matches the conical block (8.1).

3. A tubular filter for an aluminum-titanium casting and rolling line according to claim 1, characterized in that: The sealing sleeve (5.2) has an outer conical surface, and the sealing groove (4.1) is a conical groove adapted to the outer conical surface.

4. A tubular filter for an aluminum-titanium casting and rolling line according to claim 1, characterized in that: The distance between the aluminum melt liquid surface in the upper chamber of the aluminum melt and the upper partition (7) is 10-20cm. The lower surface of the upper partition (7) is also provided with multiple heating silicon carbide rods (9).

5. A tubular filter for an aluminum-titanium casting and rolling line according to claim 1, characterized in that: The aluminum liquid flow channel (1) is located on one side of the filter box (2), and the aluminum liquid flow channel (1) is connected to the upper chamber of the aluminum melt through the flow channel (3).

6. A tubular filter for an aluminum-titanium casting and rolling line according to claim 1, characterized in that: The filter box (2) is provided with an outer shell (2.1) and an insulating inner lining (2.2) from the outside to the inside; the filter box (2) also includes a box cover (2.3), which is placed on the top of the filter box (2).

7. A tubular filter for an aluminum-titanium casting and rolling line according to claim 1, characterized in that: The depth of the outlet groove (8.2) is higher than the height of the threaded sleeve (5.3).

8. A tubular filter for an aluminum-titanium casting and rolling line according to claim 1, characterized in that: The filter box (2) has an outlet flow channel on one side of the lower part that communicates with the lower chamber of the aluminum melt, and the outlet flow channel is provided with a sealing plug (6).

9. A tubular filter for an aluminum-titanium casting and rolling line according to claim 1, characterized in that: The vertical groove of the L-shaped groove (8.3) extends to the lower end face of the ceramic filter tube (8).

10. A tubular filter for an aluminum-titanium casting and rolling line according to claim 1, characterized in that: The height of the threaded sleeve (5.3) is less than the groove depth of the threaded groove (4.2).

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