Online screening, deoxidizing and sealed collecting equipment for high-strength and high-toughness aluminum alloy powder

Abstract

The invention discloses online screening, deoxidizing and sealed collecting equipment for high-strength and high-toughness aluminum alloy powder, and belongs to the technical field of aluminum alloy powder material machining. The online screening, deoxidizing and sealed collecting equipment comprises a screening box, a quantitative tank is installed below the screening box, a connecting pipe is fixedly installed between the screening box and the quantitative tank, and a screening net is fixedly installed on the inner wall of the screening box; a feeding opening is fixedly formed in the top of the screening box. The mixed flow drying mechanism and the active cleaning mechanism share the rotating power of the vertical pipe, a driving motor does not need to be independently arranged for each mechanism, cooperative utilization of power is achieved, the internal structure of the equipment is simplified, and the integration degree of the equipment is improved; and meanwhile, the equipment integrates the functions of screening, deoxidizing, drying, impurity cleaning, quantitative sealing and collecting and the like, online continuous treatment of the aluminum alloy powder is achieved, the transfer links among all procedures are reduced, the oxidation risk and energy consumption in the powder transfer process are reduced, and the overall production efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of aluminum alloy powder material processing technology, specifically, it relates to an online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder. Background Technology

[0002] High-strength and high-toughness aluminum alloy powder, with its low density, high specific strength, and excellent toughness, is widely used in high-end fields such as aerospace, high-end equipment manufacturing, and rail transportation. These fields have extremely stringent requirements for the purity, particle size uniformity, and oxidation degree of aluminum alloy powder. If large particles of impurities are mixed in the powder, it will seriously affect the mechanical properties of the subsequent molded parts. If the powder surface is oxidized or mixed with oxygen, it will cause defects such as pores and cracks during the molding process, which will greatly reduce the high strength and high toughness of the finished product, and may even lead to the scrapping of parts.

[0003] Currently, the processing of high-strength and high-toughness aluminum alloy powder in industrial production mostly adopts a segmented operation mode of "screening-deoxygenation-drying-collection". Each process operates independently, which has many technical drawbacks and makes it difficult to meet the stringent requirements for powder quality in high-end fields. The specific problems are as follows: Firstly, the screening and deoxygenation drying processes are disconnected, resulting in poor deoxygenation drying effects. In existing technologies, aluminum alloy powder first undergoes separate screening equipment to remove large particle impurities before being transferred to deoxygenation drying equipment for further processing. During this transfer, the powder comes into full contact with oxygen in the air, causing the already deoxygenated powder to oxidize again. Furthermore, the segmented operation cannot achieve simultaneous deoxygenation during the powder screening process, meaning the powder may oxidize and deteriorate during the screening stage, damaging its core properties. In addition, existing drying mechanisms often use a single airflow, which easily leads to powder agglomeration and insufficient deoxygenation, further affecting powder quality.

[0004] Secondly, the screening mesh is prone to clogging, resulting in low screening efficiency and high maintenance costs. Aluminum alloy powder has a certain degree of stickiness. During the screening process, large, unqualified particles easily adhere to the surface of the screening mesh. If not cleaned in time, they will quickly clog the mesh pores, causing screening operations to be interrupted. This requires frequent manual shutdowns for cleaning, which not only reduces overall production efficiency but also increases manual maintenance costs. At the same time, the screening mesh is easily subjected to mechanical damage during manual cleaning, shortening its service life. Furthermore, the powder is easily exposed to air during cleaning, causing secondary oxidation and introducing new impurities.

[0005] Third, the collection process suffers from poor sealing performance and insufficient quantitative accuracy. Existing collection equipment mostly adopts open or semi-open collection methods. Aluminum alloy powder is prone to oxidation when it comes into contact with air during the collection stage, and vacuum sealing collection cannot be achieved, making it difficult to ensure the purity of the powder. At the same time, quantitative collection relies heavily on manual measurement, which has a large error and cannot meet the needs of batch feeding and accurate measurement in industrial production. Manual measurement is not only inefficient, but may also lead to powder waste or contamination due to improper operation.

[0006] Fourth, the equipment has low integration, high energy consumption, and poor adaptability. In existing technologies, each process, such as screening, deoxygenation, drying, and collection, requires independent equipment. This equipment occupies a large area, has low integration, and the transfer between different pieces of equipment is cumbersome. This not only increases equipment investment costs and energy consumption but also extends the production cycle. Furthermore, the power systems of each independent piece of equipment are independent of each other, making it impossible to achieve power synergy, which further increases energy consumption. Moreover, it is difficult to adapt to modern industrial automation and continuous production processes, limiting its application in the production of high-end aluminum alloy powder. To address the aforementioned issues, this application proposes an online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder. Summary of the Invention

[0007] To address the problems in related technologies, this invention proposes an online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder, thereby overcoming the aforementioned technical problems in existing related technologies.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: An online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder includes a screening box, a metering tank installed below the screening box, a connecting pipe fixedly installed between the screening box and the metering tank, a screening screen fixedly installed on the inner wall of the screening box, a feed inlet fixedly installed on the top of the screening box, an air pump fixedly installed on the outer side of the screening box, an air injection pipe connected to the air pump, three mounting rods fixedly installed on the inner wall of the screening box, a common vertical pipe installed between the three mounting rods, and an air extraction pipe installed on the metering tank. The mixed-flow drying mechanism is located in the middle of the screening box and works in conjunction with the feed inlet to agitate and disperse the incoming aluminum alloy powder and blow in hot inert gas for drying. An active cleaning mechanism, located on top of the screening screen and below the mixed-flow drying mechanism, is used to clean and collect large particles filtered out of the screening screen and prevent clogging. The quantitative collection mechanism, installed inside the quantitative tank, is used to seal the top and bottom of the quantitative tank for quantitative collection of the sieved aluminum alloy powder. It can also perform vacuum collection.

[0009] Preferably, the mixed-flow drying mechanism includes two horizontal pipes, which are fixedly connected to the top of the vertical pipe. Two nozzles are installed on one side of the horizontal pipes, and the four nozzles on the two horizontal pipes are centrally symmetrical. The same isolation cylinder is fixedly installed between the three mounting rods. The vertical pipe is slidably installed on the isolation cylinder, and a guide hole is opened on the vertical pipe. The guide hole is located inside the isolation cylinder, and the isolation cylinder is connected to the air injection pipe.

[0010] Preferably, three horizontal guide plates are fixedly installed on the vertical pipe. The three horizontal guide plates are evenly distributed in a ring on the vertical pipe, and the height of the three horizontal guide plates decreases sequentially. Multiple dividing strips are installed on the top of the horizontal guide plates, and the horizontal guide plates are set at a 45-degree angle downwards from the tangent direction of the vertical pipe.

[0011] Preferably, the active cleaning mechanism includes an arc-shaped scraper, an installation cylinder is rotatably connected to the top of the screening screen, the arc-shaped scraper is fixedly installed on one side of the installation cylinder and is in contact with the screening screen, and the installation cylinder is slidably connected to the vertical pipe.

[0012] Preferably, a piston plate is slidably connected to the inner wall of the mounting cylinder, the piston plate is fixedly connected to the bottom end of the vertical pipe, and limit strips are fixedly installed on both inner walls of the mounting cylinder. The limit strips are slidably connected to the piston plate, and a return spring is fixedly installed at the bottom of the piston plate. The bottom end of the return spring is fixedly connected to the bottom inner wall of the mounting cylinder.

[0013] Preferably, an annular collection box is fixedly installed on the outside of the screening box, and multiple through holes are opened on the inner side of the annular collection box. The through holes are connected to the screening box, and an annular cover plate is threaded to the bottom of the annular collection box.

[0014] Preferably, the quantitative collection mechanism includes a vertical rod, which is slidably installed inside the quantitative container. A conical stopper box and a conical plug are respectively installed at the top and bottom of the vertical rod. The conical stopper box and the conical plug cooperate with the top and bottom of the quantitative container, respectively. A weighing instrument is installed on the top of the conical plug.

[0015] Preferably, multiple fixed rods are fixedly installed on the inner wall of the metering tank, and the same sleeve is fixedly installed between the multiple fixed rods. The vertical rod is slidably installed on the sleeve, and an induction coil is installed on the inner wall of the sleeve. A magnetic rod is sleeved on the outer side of the vertical rod. The magnetic rod is inductively engaged with the induction coil, and baffles are installed at the top and bottom of the magnetic rod. The baffles cooperate with the top and bottom of the sleeve.

[0016] Preferably, the conical stopper box is fitted with three annular sealing airbags on its outer side, and the annular sealing airbags are in communication with the conical stopper box.

[0017] Preferably, an air injection cylinder is fixedly installed on the bottom inner wall of the conical plug box, a connection hole is opened at the top of the air injection cylinder, a compression plate is slidably connected to the inner wall of the air injection cylinder, the compression plate is in contact with the inner wall of the air injection cylinder, a vertical rod is fixedly connected to the compression plate, and multiple top springs are fixedly installed on the top of the compression plate, and the top of the top springs is fixedly connected to the top inner wall of the air injection cylinder.

[0018] In summary, the technical effects and advantages of this invention are as follows: The vertical and horizontal pipes are rotated by the jet recoil force, which creates a swirling flow field of the ejected hot inert gas. This actively disperses the falling powder clumps, greatly increasing the contact area and contact time between the powder and the dry inert gas. The deoxygenation and drying effect is more uniform and thorough. The rotation of the vertical pipe does not require an additional motor drive, as it utilizes the reaction force of the jet itself, which is energy-saving and simplifies the structure.

[0019] Multiple dispersion and auxiliary vibrating screen: The horizontal guide plate and its dividing strips perform secondary buffering, interception and dispersion of powder. Its unique tilt and height difference design converts the impact force of the falling powder into an auxiliary torque to drive the vertical tube to rotate, and further transmits the impact energy through the vertical tube into periodic flexible vibration of the screening screen. It cleverly uses the powder's own gravity to achieve auxiliary screening without the need for an external vibrator, which improves screening efficiency and prevents screen clogging.

[0020] The cleaning mechanism (arc-shaped scraper) is driven by the sliding connection of the same rotating vertical tube, achieving synchronous operation with the screening and drying processes. It can continuously scrape large particles of foreign matter separated from the screen from the working area of ​​the screen and collect them into the annular collection box through the through holes. Through the reset spring and piston plate structure, the up and down movement of the vertical tube is transformed into a flexible impact on the mounting cylinder and the screening screen. This vibration method can effectively promote the screening of fine powder and avoid the damage that rigid impact may cause to the screen and equipment structure, further ensuring the smoothness of screening and the service life of the equipment.

[0021] The collected weight is monitored in real time by a weighing instrument. Once the set value is reached, the controller automatically triggers the induction coil, driving the vertical rod upward. This process simultaneously and automatically switches the valves to "close the top feed port and open the bottom discharge port," achieving precise control of the collected amount and automation of the production process. While the discharge port is opened at the bottom of the metering tank, a vacuum pump can be connected via a suction pipe to establish a vacuum or inert environment in the downstream collection container before material collection. This method minimizes oxygen exposure of the powder before final packaging, making it particularly suitable for high-end aluminum alloy powders with extremely high oxygen content requirements.

[0022] The design of the conical plug and conical block conforms to the principle of pressure sealing. When the top is closed, it automatically inflates the annular sealing airbag, causing it to expand and fit tightly against the tank wall. This dynamic sealing method can adapt to small deformations or manufacturing tolerances, ensuring extremely high sealing performance even when the tank body is slightly deformed, preventing air from seeping in.

[0023] The mixed-flow drying mechanism and the active cleaning mechanism share the rotational power of the vertical pipe, eliminating the need for separate drive motors for each mechanism. This achieves synergistic utilization of power, simplifies the internal structure of the equipment, and enhances its integration level. At the same time, the equipment integrates functions such as screening, deoxygenation, drying, impurity cleaning, and quantitative sealed collection into one unit, enabling continuous online processing of aluminum alloy powder. This reduces transfer links between processes, lowers the risk of oxidation and energy consumption during powder transfer, and improves overall production efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the quantitative collection mechanism of the present invention; Figure 4 This is a schematic diagram of the conical plug box structure of the present invention; Figure 5 This is a cross-sectional view of the conical plug box and the air injection cylinder of the present invention; Figure 6 This is a schematic diagram of the transmission connection structure between the vertical tube and the screening screen of the present invention; Figure 7 This is a schematic cross-sectional view of the mounting cylinder structure of the present invention; Figure 8 This is a cross-sectional view of the isolation cylinder structure of the present invention.

[0025] In the picture: 1. Screening box; 2. Metering tank; 3. Connecting pipe; 4. Screening screen; 5. Mixed flow drying mechanism; 51. Horizontal pipe; 52. Nozzle; 53. Horizontal guide plate; 54. Dividing bar; 6. Active cleaning mechanism; 61. Mounting cylinder; 62. Arc-shaped scraper; 63. Limiting bar; 64. Piston plate; 65. Return spring; 66. Annular collection box; 67. Annular cover plate; 68. Through hole; 7. Metering collection mechanism; 71. Vertical rod; 7 2. Conical plug; 73. Conical plug box; 74. Induction coil; 75. Magnetic rod; 76. Baffle; 77. Annular sealing airbag; 78. Air injection cylinder; 79. Connecting hole; 710. Extrusion plate; 712. Top spring; 8. Air extraction pipe; 9. Feed inlet; 10. Mounting rod; 11. Air pump; 12. Air injection pipe; 13. Isolation cylinder; 14. Vertical pipe; 15. Fixing rod; 16. Sleeve; 17. Weighing instrument; 18. Guide hole. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1

[0027] Reference Figure 1-8 An online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder includes a screening box 1, a metering tank 2 installed below the screening box 1, a connecting pipe 3 fixedly installed between the screening box 1 and the metering tank 2, a screening screen 4 fixedly installed on the inner wall of the screening box 1, a feed inlet 9 fixedly installed on the top of the screening box 1, an air pump 11 fixedly installed on the outer side of the screening box 1, an air injection pipe 12 connected to the air pump 11, three mounting rods 10 fixedly installed on the inner wall of the screening box 1, a common vertical pipe 14 connected between the three mounting rods 10, an exhaust pipe 8 installed on the metering tank 2, and heated inert gas connected to the air pump 11, which is injected into the screening box 1 through the air injection pipe 12 to deoxygenate and dry the aluminum alloy powder. The mixed-flow drying mechanism 5 is located in the middle of the screening box 1 and cooperates with the feed inlet 9. It is used to stir and disperse the incoming aluminum alloy powder and blow in hot inert gas for drying. The active cleaning mechanism 6 is located on top of the screening screen 4 and below the mixed flow drying mechanism 5. It is used to clean and collect large particles filtered out of the screening screen 4 and prevent clogging. The quantitative collection mechanism 7 is installed inside the quantitative tank 2. It is used to seal the top and bottom of the quantitative tank 2 for quantitative collection of the sieved aluminum alloy powder. It can also perform vacuum collection.

[0028] Reference Figure 2 and Figure 6 The mixed-flow drying mechanism 5 includes two horizontal pipes 51, which are fixedly connected to the top of the vertical pipe 14. Two nozzles 52 are installed on one side of the horizontal pipes 51. The four nozzles 52 on the two horizontal pipes 51 are centrally symmetrical. The same isolation cylinder 13 is fixedly installed between the three mounting rods 10. The vertical pipe 14 is slidably installed on the isolation cylinder 13. A guide hole 18 is opened on the vertical pipe 14. The guide hole 18 is located inside the isolation cylinder 13. The isolation cylinder 13 is connected to the air injection pipe 12.

[0029] Specifically, the gas in the gas injection pipe 12 is quickly introduced into the isolation cylinder 13, and then into the vertical pipe 14 through the guide hole 18. Finally, it is sprayed out through the horizontal pipe 51 and the nozzle 52. When the nozzle 52 sprays gas, the reverse thrust of the gas pushes the vertical pipe 14 to rotate, which in turn drives the horizontal pipe 51 to rotate. This disperses the falling aluminum alloy powder, making it easier for it to come into full contact with the gas and increasing the drying effect.

[0030] Reference Figure 6 Three horizontal guide plates 53 are fixedly installed on the vertical pipe 14. The three horizontal guide plates 53 are evenly distributed in a ring on the vertical pipe 14, and the height of the three horizontal guide plates 53 decreases sequentially. Multiple dividing strips 54 are installed on the top of the horizontal guide plates 53. The horizontal guide plates 53 are set at a 45-degree angle downward in the tangent direction of the vertical pipe 14.

[0031] Specifically, the three transverse guide plates 53 can buffer and intercept the falling aluminum alloy powder, and under the action of multiple dividing strips 54, the aggregated aluminum alloy powder is dispersed again. At the same time, the three transverse guide plates 53 are set at a downward 45-degree angle, so that when the aluminum alloy powder acts on the transverse guide plates 53, it can also push the transverse guide plates 53 to rotate laterally, thereby increasing the rotation intensity of the vertical tube 14. Furthermore, since the height of the three transverse guide plates 53 is set to decrease sequentially, the time for the aluminum alloy powder to act on the three transverse guide plates 53 is different, thereby increasing the frequency of the aluminum alloy powder impacting the transverse guide plates 53, and transmitting it to the screening screen 4 through the vertical tube 14, thereby causing the screening screen 4 to vibrate automatically and increasing the screening efficiency of the screening screen 4.

[0032] Reference Figure 6 The active cleaning mechanism 6 includes an arc-shaped scraper 62. The top of the screening screen 4 is rotatably connected to an installation cylinder 61. The arc-shaped scraper 62 is fixedly installed on one side of the installation cylinder 61 and is in contact with the screening screen 4. The installation cylinder 61 is slidably connected to the vertical pipe 14. An annular collection box 66 is fixedly installed on the outside of the screening box 1. Multiple through holes 68 are opened on the inner side of the annular collection box 66. The through holes 68 are interconnected with the screening box 1. An annular cover plate 67 is threadedly connected to the bottom of the annular collection box 66.

[0033] Specifically, the mounting cylinder 61 is slidably connected to the vertical pipe 14. When the vertical pipe 14 rotates, the mounting cylinder 61 rotates, which in turn drives the arc-shaped scraper 62 to rotate. The rotating arc-shaped scraper 62 pushes and scrapes the large particles filtered out on the screening screen 4 and guides them into the annular collection box 66 through the through hole 68, so as to facilitate centralized processing later.

[0034] Reference Figure 7A piston plate 64 is slidably connected to the inner wall of the mounting cylinder 61. The piston plate 64 is fixedly connected to the bottom end of the vertical tube 14. Limiting strips 63 are fixedly installed on both sides of the inner wall of the mounting cylinder 61. The limiting strips 63 are slidably connected to the piston plate 64. A return spring 65 is fixedly installed at the bottom of the piston plate 64. The bottom end of the return spring 65 is fixedly connected to the bottom inner wall of the mounting cylinder 61.

[0035] Specifically, the sliding connection between the limiting strip 63 and the piston plate 64 can limit the vertical tube 14 and the mounting cylinder 61 to the left and right, so that the vertical tube 14 can only move up and down in the mounting cylinder 61. At the same time, the rotating vertical tube 14 can drive the mounting cylinder 61 to rotate. The setting of the return spring 65 can reduce the rigid impact force when the vertical tube 14 moves up and down and convert it into a flexible impact, which acts on the screening screen 4 and drives the screening screen 4 to vibrate.

[0036] Reference Figure 2 The quantitative collection mechanism 7 includes a vertical rod 71, which is slidably installed inside the quantitative container 2. A conical stopper box 73 and a conical block 72 are respectively installed at the top and bottom of the vertical rod 71. The conical stopper box 73 and the conical block 72 cooperate with the top and bottom of the quantitative container 2, respectively. A weighing instrument 17 is installed on the top of the conical block 72. Multiple fixing rods 15 are fixedly installed on the inner wall of the quantitative container 2, and a common sleeve 16 is fixedly installed between the multiple fixing rods 15. The vertical rod 71 is slidably installed on the sleeve 16. An induction coil 74 is installed on the inner wall of the sleeve 16. A magnetic rod 75 is sleeved on the outer side of the vertical rod 71, and the magnetic rod 75 cooperates with the induction coil 74. Baffles 76 are installed at the top and bottom of the magnetic rod 75, and the baffles 76 cooperate with the top and bottom of the sleeve 16. Three annular sealing airbags 77 are fitted on the outer side of 73. The annular sealing airbags 77 are connected to the conical stopper box 73. When the induction coil 74 is energized, the induction coil 74 generates a magnetic field, which acts on the magnetic rod 75. The magnetic rod 75 pushes the vertical rod 71 to move upward. The vertical rod 71 drives the conical stopper box 73 to move upward. The top and bottom of the metering tank 2 are both conical, so that the conical stopper box 73 can act on the inner wall of the top of the metering tank 2, thereby sealing the top of the metering tank 2. At the same time, the vertical rod 71 drives the conical block 72 to move upward, thereby discharging material from the bottom of the metering tank 2. The aluminum alloy powder in the metering tank 2 is weighed by the weighing instrument 17. At the same time, the three annular sealing airbags 77 can increase the sealing strength between the conical stopper box 73 and the inner wall of the top of the metering tank 2.

[0037] Working principle: During operation, the air pump 11 and the induction coil 74 are connected to an external controller. Aluminum alloy powder is fed into the screening box 1 through the feed inlet 9. Heated inert gas is connected to the air pump 11 and injected into the isolation cylinder 13 through the air injection pipe 12. Then, it is guided through the guide hole 18 into the vertical pipe 14, and finally sprayed out through the horizontal pipe 51 and the nozzle 52. When the nozzle 52 sprays air, the reverse thrust of the air pushes the vertical pipe 14 to rotate, which in turn drives the horizontal pipe 51 to rotate. This disperses the falling aluminum alloy powder, facilitating full contact with the gas and increasing the drying effect. Simultaneously, some of the falling aluminum alloy powder falls onto the three horizontal guide plates 53. The arrangement of the three horizontal guide plates 53 enables… The falling aluminum alloy powder is buffered and intercepted, and the aggregated aluminum alloy powder is dispersed again under the action of multiple dividing strips 54. At the same time, the three transverse guide plates 53 are set at a downward 45-degree angle, so that when the aluminum alloy powder acts on the transverse guide plates 53, it can also push the transverse guide plates 53 to rotate laterally, thereby increasing the rotation intensity of the vertical tube 14. Furthermore, since the height of the three transverse guide plates 53 is set to decrease sequentially, the time for the aluminum alloy powder to act on the three transverse guide plates 53 is different, thereby increasing the frequency of the aluminum alloy powder impacting the transverse guide plates 53. This is then transmitted to the screening screen 4 through the vertical tube 14, thereby causing the screening screen 4 to vibrate automatically and increasing the screening efficiency of the screening screen 4. The rotating vertical tube 14 is slidably connected to the piston plate 64 via the limiting strip 63, thereby driving the mounting cylinder 61 to rotate. The reset spring 65 reduces the rigid impact force when the vertical tube 14 moves up and down and converts it into a flexible impact, which acts on the screening screen 4 and causes the screening screen 4 to vibrate. The rotation of the mounting cylinder 61 drives the arc scraper 62 to rotate. The rotating arc scraper 62 pushes and scrapes the large particles filtered out on the screening screen 4 and guides them into the annular collection box 66 through the through hole 68, so as to facilitate centralized processing later. When the weighing instrument 17 weighs the aluminum alloy powder in the quantitative container 2 to the specified weight, the induction coil 74 is energized by the external controller. The induction coil 74 generates a magnetic field, which acts on the magnetic rod 75. The magnetic rod 75 pushes the vertical rod 71 to move upward. The vertical rod 71 drives the conical stopper box 73 to move upward. The top and bottom of the quantitative container 2 are both conical, so that the conical stopper box 73 can act on the inner wall of the top of the quantitative container 2, thereby sealing the top of the quantitative container 2. At the same time, the vertical rod 71 drives the conical block 72 to move upward, thereby discharging material from the bottom of the quantitative container 2 and weighing the aluminum alloy powder in the quantitative container 2. At the same time, the setting of three annular sealing airbags 77 can increase the sealing strength between the conical stopper box 73 and the inner wall of the top of the quantitative container 2. When the top of the quantitative container 2 is closed and the bottom is open for collection and discharge, a vacuum pump is connected through the air extraction pipe 8. The vacuum pump is used to perform a vacuum operation on the quantitative container 2 and the collection container below, thereby enabling sealed collection. Example 2

[0038] This embodiment is a further optimization based on Embodiment 1, and the parts that are the same as the aforementioned technical solutions will not be repeated here: An air injection cylinder 78 is fixedly installed on the bottom inner wall of the conical plug box 73. A connection hole 79 is opened at the top of the air injection cylinder 78. A compression plate 710 is slidably connected to the inner wall of the air injection cylinder 78. The compression plate 710 is in contact with the inner wall of the air injection cylinder 78. A vertical rod 71 is fixedly connected to the compression plate 710. Multiple top springs 712 are fixedly installed on the top of the compression plate 710. The top of the top springs 712 is fixedly connected to the top inner wall of the air injection cylinder 78. When the conical stopper box 73 is sealed to the inner top of the metering tank 2, the vertical rod 71 pushes the extrusion plate 710 upward. The extrusion plate 710 pushes the gas in the air injection cylinder 78 and acts on the conical stopper box 73. Finally, the gas is introduced into the annular sealing airbag 77, causing the annular sealing airbag 77 to expand and completely fit the inner wall of the metering tank 2. This prevents the metering tank 2 from deforming or from not fitting tightly, thus quickly sealing the tank and increasing the sealing strength of the conical stopper box 73. The top spring 712 can drive the vertical rod 71 and the conical stopper box 73 to reset when the vertical rod 71 moves downward.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder, comprising a screening box (1), characterized in that, A metering tank (2) is installed below the screening box (1). A connecting pipe (3) is fixedly installed between the screening box (1) and the metering tank (2). A screening screen (4) is fixedly installed on the inner wall of the screening box (1). A feed inlet (9) is fixedly installed on the top of the screening box (1). An air pump (11) is fixedly installed on the outside of the screening box (1). An air injection pipe (12) is connected to the air pump (11). Three mounting rods (10) are fixedly installed on the inner wall of the screening box (1). A vertical pipe (14) is installed between the three mounting rods (10). An air extraction pipe (8) is installed on the metering tank (2). The mixed flow drying mechanism (5) is set in the middle of the screening box (1) and cooperates with the feed inlet (9) to stir and disperse the incoming aluminum alloy powder and blow in hot inert gas for drying. An active cleaning mechanism (6) is set on top of the screening screen (4) and below the mixed flow drying mechanism (5) to clean and collect large particles filtered out on the screening screen (4) and prevent clogging. The quantitative collection mechanism (7) is set inside the quantitative tank (2) to seal the top and bottom of the quantitative tank (2) for quantitative collection of the sieved aluminum alloy powder, and can also perform vacuum collection.

2. The online screening, deoxygenation, and sealed collection equipment for high-strength and high-toughness aluminum alloy powder according to claim 1, characterized in that, The mixed-flow drying mechanism (5) includes two horizontal pipes (51), which are fixedly connected to the top of the vertical pipe (14). Two nozzles (52) are installed on one side of the horizontal pipe (51). The four nozzles (52) on the two horizontal pipes (51) are centrally symmetrical. The same isolation cylinder (13) is fixedly installed between the three mounting rods (10). The vertical pipe (14) is slidably installed on the isolation cylinder (13). A guide hole (18) is opened on the vertical pipe (14). The guide hole (18) is located inside the isolation cylinder (13). The isolation cylinder (13) is connected to the air injection pipe (12).

3. The online screening, deoxygenation, and sealed collection equipment for high-strength and high-toughness aluminum alloy powder according to claim 2, characterized in that, Three horizontal guide plates (53) are fixedly installed on the vertical pipe (14). The three horizontal guide plates (53) are evenly distributed in a ring on the vertical pipe (14), and the height of the three horizontal guide plates (53) decreases sequentially. Multiple dividing strips (54) are installed on the top of the horizontal guide plates (53). The horizontal guide plates (53) are set at a 45-degree angle downwards from the tangent direction of the vertical pipe (14).

4. The online screening, deoxygenation, and sealed collection equipment for high-strength and high-toughness aluminum alloy powder according to claim 1, characterized in that, The active cleaning mechanism (6) includes an arc-shaped scraper (62), and an installation cylinder (61) is rotatably connected to the top of the screening screen (4). The arc-shaped scraper (62) is fixedly installed on one side of the installation cylinder (61), and the arc-shaped scraper (62) is in contact with the screening screen (4). The installation cylinder (61) is slidably connected to the vertical pipe (14).

5. The online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder according to claim 4, characterized in that, A piston plate (64) is slidably connected to the inner wall of the mounting cylinder (61). The piston plate (64) is fixedly connected to the bottom end of the vertical pipe (14). Limiting strips (63) are fixedly installed on both sides of the inner wall of the mounting cylinder (61). The limiting strips (63) are slidably connected to the piston plate (64). A return spring (65) is fixedly installed at the bottom of the piston plate (64). The bottom end of the return spring (65) is fixedly connected to the bottom inner wall of the mounting cylinder (61).

6. The online screening, deoxygenation, and sealed collection equipment for high-strength and high-toughness aluminum alloy powder according to claim 1, characterized in that, An annular collection box (66) is fixedly installed on the outside of the screening box (1). Multiple through holes (68) are opened on the inside of the annular collection box (66). The through holes (68) are connected to the screening box (1). An annular cover plate (67) is threadedly connected to the bottom of the annular collection box (66).

7. The online screening, deoxygenation, and sealed collection equipment for high-strength and high-toughness aluminum alloy powder according to claim 1, characterized in that, The quantitative collection mechanism (7) includes a vertical rod (71), which is slidably installed inside the quantitative tank (2). A conical stopper box (73) and a conical block (72) are respectively installed at the top and bottom of the vertical rod (71). The conical stopper box (73) and the conical block (72) cooperate with the top and bottom of the quantitative tank (2) respectively. A weighing instrument (17) is installed on the top of the conical block (72).

8. The online screening, deoxygenation, and sealed collection equipment for high-strength and high-toughness aluminum alloy powder according to claim 1, characterized in that, Multiple fixed rods (15) are fixedly installed on the inner wall of the metering tank (2). The same sleeve (16) is fixedly installed between the multiple fixed rods (15). The vertical rod (71) is slidably installed on the sleeve (16). An induction coil (74) is installed on the inner wall of the sleeve (16). A magnetic rod (75) is sleeved on the outer side of the vertical rod (71). The magnetic rod (75) is inductively engaged with the induction coil (74). Baffles (76) are installed at the top and bottom of the magnetic rod (75). The baffles (76) are engaged with the top and bottom of the sleeve (16).

9. The online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder according to claim 7, characterized in that, The conical plug box (73) is fitted with three annular sealing airbags (77) on its outer side, and the annular sealing airbags (77) are connected to the conical plug box (73).

10. The online screening, deoxygenation, and sealed collection device for high-strength and high-toughness aluminum alloy powder according to claim 7, characterized in that, An air injection cylinder (78) is fixedly installed on the bottom inner wall of the conical plug box (73). A connection hole (79) is opened at the top of the air injection cylinder (78). A compression plate (710) is slidably connected to the inner wall of the air injection cylinder (78). The compression plate (710) and the inner wall of the air injection cylinder (78) are in close contact with each other. A vertical rod (71) is fixedly connected to the compression plate (710). Multiple top springs (712) are fixedly installed on the top of the compression plate (710). The top of the top springs (712) is fixedly connected to the top inner wall of the air injection cylinder (78).

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