Aluminum liquid filtration and degassing device

Abstract

This utility model relates to the field of aluminum liquid processing, specifically disclosing an aluminum liquid filtration and degassing device, including a filter cylinder and a cylinder cover. The cylinder cover is detachably installed on the top of the filter cylinder. It also includes a stirring rod, which vertically and coaxially passes through the cylinder cover and is located inside the filter cylinder; a motor that drives the stirring rod to rotate, the motor being fixedly installed on the cylinder cover; and filter boxes, which are detachably installed on the stirring rod. One vertical side wall of the filter box is open, and the other side of the filter box has several filter holes. The vertical plane containing the filter holes is coplanar with the vertical plane containing the radius of the filter cylinder. The end of the filter box away from the stirring rod has an arc surface that can fit against the inner wall of the filter cylinder. In this solution, the motor drives the stirring rod and the filter boxes to rotate clockwise. The rotation of the filter boxes fully filters the aluminum liquid while simultaneously stirring the aluminum liquid inside the filter cylinder, allowing hydrogen gas in the aluminum liquid to be quickly discharged. This achieves both filtration and degassing simultaneously, improving the overall processing efficiency of filtration and degassing.

Description

Technical Field

[0001] This utility model relates to the field of aluminum liquid processing technology, and in particular to an aluminum liquid filtration and degassing device. Background Technology

[0002] Hydrogen accounts for up to 85% of the dissolved aluminum in molten aluminum. During solidification, the hydrogen content drops sharply, causing it to precipitate and form pinholes or pores. These microscopic defects can lead to a decrease in the mechanical properties of castings, insufficient tensile strength, and even fatigue cracks. Porosity can also cause blistering during processing (such as in forging and extrusion products), or lead to problems such as bulging and peeling during heat treatment, which can result in scrapping in severe cases. Therefore, filtration and degassing are necessary during the processing of molten aluminum. This process combines physical purification with chemical action to fundamentally improve the metallurgical quality of the material, laying the foundation for the production of high-performance and highly reliable aluminum alloy products.

[0003] In the process of filtering and degassing molten aluminum, filtration and degassing are generally carried out separately. The filtration operation originally relied on manual removal of slag from the high-temperature surface using shovels, which posed a risk of burns and was labor-intensive. To solve this problem, multi-chamber or multi-layer filters are usually set up in the equipment to remove impurities. However, after filtration, due to the complex structure of the multi-chamber or multi-layer filter, residual molten aluminum solidifies and is difficult to remove completely, affecting the subsequent filtration efficiency. At the same time, some impurities are prone to accumulate at the bottom or corners of the equipment due to the poor flow of molten aluminum, which also affects the filtration efficiency. In addition, the separate filtration and degassing steps result in a low overall processing efficiency for filtration and degassing. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides an aluminum liquid filtration and degassing device to solve the problem that the overall processing efficiency of filtration and degassing is low due to the separate filtration and degassing steps.

[0005] To achieve the above objectives, the basic solution of this utility model is as follows: an aluminum liquid filtration and degassing device, comprising a filter cylinder and a cylinder cover, wherein the cylinder cover is detachably installed on the top of the filter cylinder, and further comprising:

[0006] The stirring rod is vertically and coaxially passed through the cylinder cover and located inside the air filter cylinder;

[0007] The motor that drives the stirring rod to rotate is fixedly mounted on the cylinder cover;

[0008] Several filter boxes are detachably installed on the stirring rod. One vertical side wall of the filter box is open, and several filter holes are provided on the other side of the filter box. The vertical plane where the filter holes are located is coplanar with the vertical plane where the radius of the air filter cylinder is located. The end of the filter box away from the stirring rod is an arc surface that can fit against the inner wall of the air filter cylinder.

[0009] The technical principle of this utility model is as follows: When installing several filter boxes, the filter boxes can be arranged overlappingly on the stirring rod. The overall height of the overlapping filter boxes can be adapted to the depth of the aluminum liquid, so that the aluminum liquid at each level can be opposite the filter box, which facilitates the comprehensive filtration of the aluminum liquid. During filtration and degassing, the motor is started, and the motor drives the stirring rod and the filter boxes to rotate clockwise. The rotation of the filter boxes fully filters the aluminum liquid and stirs the aluminum liquid in the gas filter tube, so that the hydrogen in the aluminum liquid is quickly discharged. Thus, filtration and degassing are achieved at the same time, improving the overall processing efficiency of filtration and degassing.

[0010] When the filter box rotates inside the air filter cylinder, the curved surface of the air filter cylinder ensures that the filter box contacts the inner wall of the air filter cylinder while also preventing excessive friction between the filter box and the inner wall of the air filter cylinder, thus ensuring that the molten aluminum at the bottom or corners of the air filter cylinder can be fully filtered.

[0011] Furthermore, the opening on the filter box extends to the curved surface of the filter box.

[0012] With the above settings, when the filter box rotates, the open part near the curved surface of the filter box can scoop the molten aluminum into the filter box for filtration, further improving the filtration efficiency of impurities in the molten aluminum at the corner of the air filter cylinder, and improving the filtration efficiency and comprehensiveness of impurities.

[0013] Furthermore, the inner wall of the filter box at the lower side of the opening is chamfered with the outer wall of the filter box.

[0014] With the above settings, the molten aluminum on the bottom surface of the filter cartridge can be scraped from the lower side of the filter box opening and enter the filter box, further improving the comprehensiveness of filtration of molten aluminum.

[0015] Furthermore, the end of the filter box away from the arc surface has a keyway hole through which the stirring rod passes. The long side of the keyway hole is arranged along the radius extension line of the filter cylinder, and the stirring rod can slide along the keyway hole.

[0016] The stirring rod is provided with a first locking hole in the radial direction, and the filter box is provided with a second locking hole at the end away from the arc surface, which can coincide with the locking hole.

[0017] Also includes:

[0018] Locking nut;

[0019] The locking bolt can pass through the first locking hole and the second locking hole and be threaded to the locking nut. The locking nut can abut against the filter box.

[0020] With the above settings, the contact position between the keyway hole on the filter box and the stirring rod can be adjusted according to the radius of the filter cylinder. At this time, it is only necessary to adjust the locking position of the locking nut on the locking bolt. This ensures that the curved surface of the filter box can fit against the inner wall of the filter cylinder under the action of centrifugal force during use. At the same time, the above adjustments allow the filter box and stirring rod to adapt to filter cylinders of different radii and lengths after adjustment.

[0021] Furthermore, several filter boxes are arranged in a staggered, overlapping manner along the axial direction of the stirring rod, and the openings of several filter boxes are arranged either clockwise or counterclockwise towards the longitudinal section of the filter box.

[0022] With the above settings, by coordinating the rotation direction with the opening arrangement direction, multiple filter boxes inside the air filter can be filtered simultaneously, which can significantly improve the filtration efficiency for impurities.

[0023] Furthermore, it also includes a baffle plate, which is horizontally fixed on the stirring rod and can abut against the keyway hole of the filter box for sealing.

[0024] With the above settings, while adjusting the position of the filter box and the stirring rod, the stirring rod drives the baffle to move synchronously, so that the baffle can block the keyway hole, so that impurities will not flow out from the keyway hole during filtration, thereby improving the comprehensiveness and efficiency of filtration.

[0025] Furthermore, the bottom surface of the filter box is provided with an inwardly recessed groove.

[0026] With the above settings, the molten aluminum entering the filter box can be fully filtered through the filter holes. Some of the filtered impurities can accumulate in the groove of the filter box. The clockwise or counterclockwise rotation of the filter box makes it difficult for impurities to leak out from the opening. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the aluminum liquid filtration and degassing device in the embodiment of this utility model from the axial side direction.

[0028] Figure 2 This is a cross-sectional view of the aluminum liquid filtration and degassing device in the embodiment of this utility model from the main view direction.

[0029] Figure 3 This is a schematic diagram of the structure of a single filter box along its axial direction.

[0030] Figure 4 A schematic diagram of the structure of a single filter cartridge along its axial direction.

[0031] In the above-mentioned attached figures: air filter 10, liquid outlet pipe 101, exhaust pipe 102, cylinder cover 20, lifting fastener 201, stirring rod 301, motor 302, filter box 40, open opening 401, arc surface 402, groove 403, keyway hole 404, filter hole 405, baffle 50, locking nut 601, locking bolt 602. Detailed Implementation

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0033] This embodiment is basically as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, this utility model embodiment proposes an aluminum liquid filtration and degassing device, including a filter cylinder 10, a cylinder cover 20, a stirring rod 301, a motor 302 that drives the stirring rod 301 to rotate, several filter boxes 40, baffles 50, locking nuts 601 and locking bolts 602. The cylinder cover 20 is detachably installed on the top of the filter cylinder 10, and two lifting fasteners 201 are fixedly installed on the cylinder cover 20. A liquid outlet pipe 101 is welded and connected to the bottom center of the filter cylinder 10, and an exhaust pipe 102 is provided at the upper end of the filter cylinder 10.

[0034] like Figure 2 As shown, the stirring rod 301 passes vertically and coaxially through the cylinder cover 20 and is located inside the air filter cylinder 10. The lower end of the stirring rod 301 is in contact with the bottom of the air filter cylinder 10. The motor 302 is fixedly installed on the cylinder cover 20 by bolts.

[0035] At the same time, such as Figure 2 , 3 As shown in Figure 4, one vertical side wall of the filter box 40 is an open end 401, and the other side of the filter box 40 is provided with a plurality of filter holes 405. The vertical plane containing the plurality of filter holes 405 is coplanar with the vertical plane containing the radius of the air filter cylinder 10. The end of the filter box 40 away from the stirring rod 301 is an arc surface 402 that can fit against the inner wall of the air filter cylinder 10. The open end 401 on the filter box 40 extends to the arc surface 402 of the filter box 40. The inner wall of the lower side of the open end 401 of the filter box 40 is chamfered with the outer wall of the filter box 40. The bottom surface of the filter box 40 is provided with an inwardly recessed groove 403.

[0036] like Figure 3 and Figure 4As shown, the filter box 40 has a keyway hole 404 at the end away from the arc surface 402 for the stirring rod 301 to pass through. The long side of the keyway hole 404 is arranged along the radial extension line of the air filter cylinder 10, and the stirring rod 301 can slide along the keyway hole 404. The stirring rod 301 is provided with a first locking hole in the radial direction, and a second locking hole that can coincide with the locking hole is provided horizontally on the end of the filter box 40 away from the arc surface 402. The locking bolt 602 can pass through the first locking hole and the second locking hole and be threadedly connected to the locking nut 601. The locking nut 601 can abut against the filter box 40.

[0037] like Figure 2 As shown, several filter boxes 40 are arranged in a staggered manner along the axial direction of the stirring rod 301, and the openings 401 of the filter boxes 40 are all arranged in a clockwise direction towards the longitudinal section of the filter box 40; the baffle 50 is horizontally fixed on the stirring rod 301, and the baffle 50 can abut against the keyway hole 404 of the filter box 40 for sealing.

[0038] In addition, the stirring rod 301, the filter box 40, and the baffle 50 are all made of graphite.

[0039] In this embodiment, when using the aluminum liquid filtration and degassing device, first adjust the contact position between the keyway hole 404 on the filter box 40 and the stirring rod 301 according to the radius of the filter cylinder 10. At this time, it is only necessary to adjust the locking position of the locking nut 601 on the locking bolt 602. This ensures that during use, under the action of centrifugal force, the arc surface 402 of the filter box 40 can fit against the inner wall of the filter cylinder 10, so that the aluminum liquid at the corners of the inner wall of the filter cylinder 10 can also be fully filtered. At the same time, after the above adjustment, the filter box 40 and the stirring rod 301 can adapt to filter cylinders 10 with different radii and lengths. While adjusting the contact position of the filter box 40 and the stirring rod 301, the stirring rod 301 drives the baffle 50 to move synchronously, so that the baffle 50 can block the keyway hole 404, so that impurities will not flow out from the keyway hole 404 during filtration, thereby improving the comprehensiveness and efficiency of filtration.

[0040] When installing several filter boxes 40, the filter boxes 40 can be arranged overlappingly on the stirring rod 301. The overall height of the overlapping filter boxes 40 can be adapted to the depth of the aluminum liquid, so that the aluminum liquid at each level can be opposite the filter box 40. During filtration, the inner wall of the lower side of the filter box 40 opening 401 of the bottom layer is chamfered with the outer wall of the filter box 40. The lower side of the filter box 40 opening 401 can scrape the aluminum liquid on the bottom surface of the air filter cylinder 10 into the filter box 40, further improving the comprehensiveness of aluminum liquid filtration.

[0041] During filtration and degassing, motor 302 is started, which drives stirring rod 301 and several filter boxes 40 to rotate clockwise. The rotation of filter boxes 40 fully filters the aluminum liquid while stirring the aluminum liquid in the filter cylinder 10, allowing hydrogen gas in the aluminum liquid to be discharged quickly. The exhaust pipe 102 can transport the discharged hydrogen gas. At the same time, the aluminum liquid entering the filter box 40 can be fully filtered through the filter holes 405. Some of the filtered impurities can accumulate in the grooves 403 of the filter box 40. The clockwise rotation of the filter box 40 makes it difficult for impurities to leak out from the opening 401. Meanwhile, aluminum liquid does not easily adhere to the stirring rod 301, filter box 40 and baffle 50 made of graphite, so that the filter box 40 can maintain a good filtration effect and effectively improve filtration efficiency.

[0042] After the aluminum liquid is filtered and discharged from the outlet pipe 101, the hoisting equipment is connected to the hoisting fastener 201. The connection between the cylinder cover 20 and the filter cylinder 10 is opened. The hoisting equipment lifts the cylinder cover 20, motor 302, stirring rod 301 and several filter boxes 40. The impurities in the filter boxes 40 are cleaned. Then the cylinder cover 20, motor 302, stirring rod 301 and several filter boxes 40 are hoisted and installed back in their original positions. The cleaning of the filter boxes 40 and the reuse of the aluminum liquid filtration and degassing device are convenient.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An aluminum liquid filtration and degassing device, comprising a filter cylinder and a cylinder cover, wherein the cylinder cover is detachably installed on the top of the filter cylinder, characterized in that, Also includes: A stirring rod, which is vertically and coaxially passed through the cylinder cover and located inside the air filter cylinder; A motor that drives the stirring rod to rotate is fixedly mounted on the cylinder cover; Several filter boxes are detachably installed on the stirring rod. One vertical side wall of the filter box is open, and several filter holes are provided on the other side of the filter box. The vertical plane where the filter holes are located is coplanar with the vertical plane where the radius of the air filter cylinder is located. The end of the filter box away from the stirring rod is an arc surface that can fit against the inner wall of the air filter cylinder.

2. The aluminum liquid filtration and degassing device as described in claim 1, characterized in that, The opening on the filter box extends to the curved surface of the filter box.

3. The aluminum liquid filtration and degassing device as described in claim 2, characterized in that, The inner wall of the filter box at the lower side of the opening is chamfered with the outer wall of the filter box.

4. The aluminum liquid filtration and degassing device as described in claim 3, characterized in that, The filter box has a keyway hole at the end away from the arc surface through which the stirring rod passes. The long side of the keyway hole is arranged along the radius extension line of the filter cylinder, and the stirring rod can slide along the keyway hole. The stirring rod is provided with a first locking hole in the radial direction, and the filter box is provided with a second locking hole at the end away from the arc surface that can coincide with the locking hole. Also includes: Locking nut; The locking bolt passes through the first locking hole and the second locking hole and is threadedly connected to the locking nut, which abuts against the filter box.

5. The aluminum liquid filtration and degassing device as described in claim 4, characterized in that, The filter boxes are arranged in a staggered, overlapping manner along the axial direction of the stirring rod, and the openings of the filter boxes are arranged either clockwise or counterclockwise towards the longitudinal section of the filter box.

6. The aluminum liquid filtration and degassing device as described in claim 4, characterized in that, It also includes a baffle plate, which is horizontally fixedly installed on the stirring rod and can abut against the keyway hole of the filter box for sealing.

7. The aluminum liquid filtration and degassing device as described in claim 1, characterized in that, The bottom surface of the filter box is provided with an inwardly recessed groove.

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