Gas-liquid channel separation type uniform metal microdroplet stable spraying device

Abstract

The invention belongs to the technical field of uniform metal microdroplet jetting devices, and particularly relates to a gas-liquid channel separation type uniform metal microdroplet stable jetting device which comprises a high-temperature heating furnace used for heating metal raw materials; the crucible is located in the high-temperature heating furnace and used for containing metal raw materials and a solution of the metal raw materials; and the spraying assembly comprises an outer runner, a nozzle and a control assembly, and the outer runner is connected to the bottom of the high-temperature heating furnace. By arranging the control assembly, when protective gas passes through the gap between the outer flow channel and the nozzle, the counterweight ring can always apply upward push to the sealing plug through the ejector rod, so that the sealing plug can always cooperate with the sealing ring to apply pressure to the protective gas passing through the gap between the sealing plug and the sealing ring; therefore, the protective gas is always kept at a certain pressure when passing through the gap between the nozzle and the nozzle, turbulent flow generated near the nozzle due to insufficient pressure of the protective gas is avoided, and the stability of metal jet flow is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of uniform metal droplet injection devices, and in particular relates to a gas-liquid channel separated uniform metal droplet stable injection device. Background Art

[0002] Currently, uniform metal raw materials are increasingly important in industrial applications. For example, ball grid array (BGA) packaging uses uniform metal solder balls as chip pins. This allows for more pins to be arranged within a limited area, increasing the number of I / O pins while shortening the length of the connecting pins to improve chip transmission speed. However, during the loading or installation process of existing spray devices, fine impurities are easily mixed into the crucible, making the spray jet unstable. In severe cases, the micronozzle can even clog and terminate the spray process. To address this problem, a Chinese patent application with publication number CN112605391A proposes a gas-liquid channel separated uniform metal droplet stable spray device "comprising a collection chamber, a crucible, a press block, a hopper, a nozzle connection assembly, a nozzle, and an excitation system." This patent transmits the excitation disturbance output by a vibrating rod into the molten metal melt, causing the jet to break into uniform metal droplets, which then solidify to obtain a uniform metal raw material. This solves the problem of hanging drops caused by partial clogging of the micronozzle, stabilizes the metal jet, and achieves the goal of stable spraying of uniform metal droplets.

[0003] Although the above patent solves the problem of uneven spraying of the existing spraying device to a certain extent, it still has the following shortcomings in actual use:

[0004] As the nitrogen bottle sprays nitrogen to the nozzle through the air pressure channel, due to the lack of suitable control components in the air pressure channel, the pressure of the nitrogen decreases as the amount of nitrogen in the nitrogen bottle decreases. When the nitrogen is sprayed around the nozzle through the air pressure channel, the lower-pressure nitrogen cannot form a stable and uniform airflow, which may affect the stability of the metal jet and the uniformity of the metal droplet size.

[0005] Therefore, it is necessary to invent a gas-liquid channel separated uniform metal droplet stable injection device to solve the above problems. Summary of the Invention

[0006] In response to the above problems, the present invention provides a gas-liquid channel separated uniform metal droplet stable injection device to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a gas-liquid channel separated uniform metal droplet stable injection device, comprising:

[0008] High temperature heating furnace, used to heat metal raw materials;

[0009] A crucible, located inside the high-temperature heating furnace, for containing metal raw materials and their solutions;

[0010] The injection assembly includes an outer flow channel, a nozzle and a control assembly. The outer flow channel is connected to the bottom of the high-temperature heating furnace and is used to guide the airflow. The nozzle is connected to the bottom of the crucible and is used to spray metal droplets. The control assembly is arranged between the outer flow channel and the nozzle and is used to control the stability of the airflow in the outer flow channel when the nozzle sprays metal droplets.

[0011] Furthermore, the gas-liquid channel separated uniform metal droplet stable injection device also includes:

[0012] A top cover, arranged on the top of the crucible and the high-temperature heating furnace;

[0013] a vibration rod, inserted into the molten metal in the crucible, for generating vibration to assist the molten metal in forming a jet;

[0014] a first air inlet pipe, connected to the top cover, for injecting protective gas into the crucible;

[0015] A second gas inlet pipe is connected to the top cover and is used to inject protective gas into the area between the crucible and the high-temperature heating furnace.

[0016] Furthermore, the control component includes:

[0017] A sealing plug is sleeved on the nozzle;

[0018] a sealing ring connected to the outer flow channel and used to cooperate with the sealing plug to control the airflow;

[0019] a stopper rod connected to the sealing plug and used to limit the downward movement distance of the sealing plug;

[0020] The reset component is arranged at the bottom of the sealing plug and is used to drive the sealing plug to reset upward after the metal droplets are sprayed.

[0021] Furthermore, the reset component includes:

[0022] a counterweight ring, sleeved on the outer flow channel;

[0023] A push rod is provided on the periphery of the sealing plug and is used to push the sealing plug to reset upwards;

[0024] A movable block connected to the counterweight ring and used for connecting the push rod;

[0025] A roller is connected to the push rod and is used to reduce the friction between the push rod and the sealing plug.

[0026] Furthermore, a limiting component is provided on the outer side of the crucible for supporting and limiting the position of the crucible in the high-temperature heating furnace.

[0027] Furthermore, a filter assembly is provided on the outside of the crucible for filtering the protective gas entering the outer flow channel.

[0028] Furthermore, a collecting assembly is provided on the vibrating rod for collecting impurities floating on the top surface of the molten metal. The collecting assembly includes:

[0029] A collecting cover connected to the vibrating rod for containing collected metal impurities;

[0030] A retaining ring is provided on the top of the collecting cover and is used to intercept impurities on the top of the collecting cover;

[0031] a limiting rod connected between the collecting cover and the retaining ring;

[0032] A positioning block connected to the retaining ring;

[0033] a positioning ring connected to the crucible and used to cooperate with the positioning block to restrict the retaining ring;

[0034] The pushing component is connected to the vibration rod and is used to drive the vibration rod to move in the vertical direction.

[0035] Furthermore, the collecting cover is provided with a toggle assembly, and the toggle assembly includes:

[0036] A paddle, connected to the collecting cover, for moving impurities into the collecting cover;

[0037] The driving assembly is connected to the vibration rod and is used to drive the vibration rod to rotate.

[0038] Furthermore, a sealing plate is sleeved on the vibration rod, and the top edge of the sealing plate protrudes upward. The bottom of the top cover is connected with an annular sealing groove that matches the protruding portion of the top edge of the sealing plate. When the vibration rod moves upward to the maximum displacement under the drive of the pushing assembly, the annular sealing groove can fit together with the sealing plate.

[0039] The technical effects and advantages of the present invention are as follows:

[0040] 1. The present invention is provided with a control assembly. When the shielding gas passes through the gap between the outer flow channel and the nozzle, the counterweight ring can always push the sealing plug upward through the push rod, so that the sealing plug can always cooperate with the sealing ring to apply pressure to the shielding gas passing through the gap between the sealing plug and the sealing ring, thereby ensuring that the shielding gas always maintains a certain pressure when passing through the gap between the two, thereby avoiding turbulence near the nozzle due to insufficient shielding gas pressure and ensuring the stability of the metal jet;

[0041] 2. The present invention is provided with a filter assembly. When the protective gas is squeezed into the area outside the crucible through the second air inlet pipe, as the protective gas continuously passes downward through the filter tube, the ceramsite filter material inside the filter tube can filter the protective gas, thereby preventing impurities in the protective gas from being blown onto the nozzle through the outer flow channel, thereby ensuring the stability of the metal jet;

[0042] 3. The present invention is provided with a collection assembly. After the metal raw material is melted, the vibrating rod can drive the collection cover to move downward under the action of the pushing member. When the collection cover squeezes the top surface of the molten metal, the impurities floating on the top surface of the molten metal can move along the bottom surface of the collection cover toward the top edge of the collection cover. As the vibrating rod continues to drive the collection cover downward, when the top edge of the collection cover sinks into the molten metal, the impurities floating on the top surface of the molten metal can flow from the top edge of the collection cover into the collection cover, thereby achieving the collection operation of the impurities.

[0043] 4. The invention is provided with a paddle. When the collection cover is immersed in the molten metal, as the vibrating rod rotates, the collection cover can drive multiple paddles along the edge of the collection cover to paddle the impurities floating on the top surface of the molten metal, thereby accelerating the flow of impurities into the collection cover and improving the collection efficiency of the collection cover for impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 It is a three-dimensional cross-sectional view of the high-temperature heating furnace and crucible structures in the present invention;

[0046] Figure 3 In the present invention Figure 2 A magnified view of part A;

[0047] Figure 4 In the present invention Figure 2 A magnified view of part B;

[0048] Figure 5 In the present invention Figure 2 Magnified view of part C;

[0049] Figure 6It is a three-dimensional schematic diagram of the crucible, nozzle and limiting assembly in the present invention;

[0050] Figure 7 It is a three-dimensional schematic diagram of the collecting assembly and the dial plate in the present invention;

[0051] Figure 8 It is a three-dimensional schematic diagram of the reset component in the present invention.

[0052] In the figure: 1. high-temperature heating furnace; 2. crucible; 3. outer flow channel; 4. nozzle; 5. top cover; 6. vibrating rod; 7. first air inlet pipe; 8. second air inlet pipe; 9. sealing plug; 10. sealing ring; 11. baffle rod; 12. counterweight ring; 13. ejector rod; 14. movable block; 15. roller; 16. collecting cover; 17. baffle ring; 18. limiting rod; 19. positioning block; 20. positioning ring; 21. dial plate; 22. sealing plate; 23. annular sealing groove; 24. limiting ring; 25. supporting ring; 26. support rod; 27. support ring; 28. filter tube; 29. ​​ceramsite filter material; 30. push plate; 31. pushing member; 32. first bevel gear; 33. driving member; 34. second bevel gear. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0054] The present invention provides Figures 1 to 8The device is a gas-liquid channel separated uniform metal droplet stable injection device, comprising: a high-temperature heating furnace 1, a crucible 2 and an injection assembly, wherein the high-temperature heating furnace 1 is used to heat the metal raw material; the crucible 2 is located inside the high-temperature heating furnace 1 and is coaxial with the high-temperature heating furnace 1, and is used to hold the metal raw material and its solution; the injection assembly comprises an outer flow channel 3, a nozzle 4 and a control assembly, wherein the outer flow channel 3 is connected to the bottom of the high-temperature heating furnace 1 and is used to guide the airflow, the nozzle 4 is connected to the bottom of the crucible 2 and is used to inject metal droplets, and the nozzle 4 is located on the inner side of the outer flow channel 3, and the control assembly is arranged between the outer flow channel 3 and the nozzle 4, and is used to control the airflow in the outer flow channel 3 when the nozzle 4 injects metal droplets. The stable, gas-liquid channel separated uniform metal droplet stable injection device also includes: a top cover 5, a vibration rod 6, a first air inlet pipe 7 and a second air inlet pipe 8. The top cover 5 is arranged on the top of the crucible 2 and the high-temperature heating furnace 1; the vibration rod 6 is inserted into the metal liquid in the crucible 2 to generate vibration and assist the metal liquid to form a jet. The vibration rod 6 is vertically inserted into the axis of the top cover 5; the first air inlet pipe 7 is fixedly inserted into the top cover 5, and the bottom end of the first air inlet pipe 7 is opposite to the inner area of ​​the crucible 2, and is used to inject protective gas into the crucible 2; the second air inlet pipe 8 is fixedly inserted into the top cover 5, and the bottom end of the second air inlet pipe 8 is opposite to the area between the crucible 2 and the high-temperature heating furnace 1, and is used to inject protective gas into the crucible 2. Protective gas is injected into the area between the crucible 2 and the high-temperature heating furnace 1, and when in use, the first air inlet pipe 7 and the second air inlet pipe 8 need to be connected to the nitrogen bottle; the control component includes: a sealing plug 9, a sealing ring 10, a baffle 11 and a reset component, the sealing plug 9 is slidably sleeved on the nozzle 4, and the diameter of the sealing plug 9 gradually increases from the upper and lower ends to the middle part; the sealing ring 10 is fixedly connected to the inner wall of the outer flow channel 3, the sealing ring 10 is located at the top of the sealing plug 9, and the inner wall of the sealing ring 10 can be fitted together with the surface of the upper half of the sealing plug 9, which is used to cooperate with the sealing plug 9 to control the airflow; the number of baffle rods 11 is multiple, and the multiple baffle rods 11 are evenly and horizontally fixedly connected to the sealing plug 9. The top edge of the sealing plug 9 and the diameter of the circle where the free ends of the multiple blocking rods 11 are located are larger than the inner diameter of the sealing ring 10, which is used to limit the distance that the sealing plug 9 moves downward; the reset component is arranged at the bottom of the sealing plug 9, and is used to drive the sealing plug 9 to reset upward after the metal droplet spraying is completed; the reset component includes: a counterweight ring 12, a push rod 13, a movable block 14 and a roller 15; the counterweight ring 12 is slidably sleeved on the outer flow channel 3; the number of push rods 13 is multiple, and the multiple push rods 13 are evenly distributed around the sealing plug 9 in a ring shape. The push rods 13 slide through and are inserted into the side wall of the outer flow channel 3, and the bottom end of the push rod 13 is inclined in the direction close to the nozzle 4, which is used to push the sealing plug 9 to reset upward;A sliding groove is provided at a position where the bottom of the counterweight ring 12 and the top of the ejector rod 13 are opposite each other along the diameter direction of the counterweight ring 12, and a movable block 14 is slidably installed in the sliding groove. The bottom of the movable block 14 is hinged to the top of the ejector rod 13 facing it. A roller 15 is installed at the bottom end of the ejector rod 13, and the roller 15 can always keep in contact with the conical surface of the lower half of the sealing plug 9, so as to reduce the friction between the ejector rod 13 and the sealing plug 9.

[0055] During operation, the top cover 5 is opened, and the metal raw material is placed in the crucible 2. The top cover 5 is then closed, and the gas supply pipeline of the protective gas is connected to the first gas inlet pipe 7 and the second gas inlet pipe 8. Then, the high-temperature heating furnace 1 is started to heat the metal raw material in the crucible 2. As the heating progresses, when the metal raw material is completely melted, the protective gas is allowed to enter the inner area of ​​the crucible 2 and the outer area of ​​the crucible 2 through the first gas inlet pipe 7 and the second gas inlet pipe 8 respectively. After the protective gas enters the inner area of ​​the crucible 2, the molten metal in the crucible 2 can be ejected into a jet through the nozzle 4 under the pressure of the protective gas. At the same time, the vibrating rod 6 can vibrate, thereby disturbing the jet. When the vibration frequency reaches a specific value, the jet breaks and produces a flow of metal droplets with uniform spacing and size.

[0056] In addition, by providing a control component, when the protective gas is not passed into the area outside the crucible 2, the rollers 15 at the bottom ends of the multiple ejector pins 13 can apply a thrust to the conical surface of the lower half of the sealing plug 9 under the pressure of the counterweight ring 12 on the ejector pins 13, so that the sealing plug 9 can maintain the upward movement trend under the action of the multiple ejector pins 13 and be tightly attached to the sealing ring 10, thereby sealing the gap between the outer flow channel 3 and the nozzle 4, preventing impurities in the outside air from entering the high-temperature heating furnace 1 through the gap between the outer flow channel 3 and the nozzle 4 when the high-temperature heating furnace 1 is not in use, thereby preventing the protective gas from blowing impurities onto the metal jet in the subsequent process, thereby ensuring the stability of the metal jet;

[0057] When the protective gas enters the outer area of ​​the crucible 2 through the second air inlet pipe 8 and blows on the top of the sealing plug 9, the sealing plug 9 can move downward under the action of the air flow pressure, and as the sealing plug 9 moves downward, the sealing plug 9 can squeeze the roller 15 at the bottom end of the push rod 13 through the conical surface of its lower half, so that the roller 15 can push the push rod 13 to move away from the sealing plug 9, and as the push rod 13 moves, the top end of the push rod 13 can move obliquely upward, thereby pushing the counterweight ring 12 to move upward, and in this process, the movable block 14 can slide along the bottom of the counterweight ring 12. The groove moves in the direction away from the sealing plug 9, and as the sealing plug 9 moves downward, the sealing plug 9 can gradually separate from the sealing ring 10. At this time, the protective gas can enter the area between the outer flow channel 3 and the nozzle 4 through the gap between the sealing ring 10 and the sealing plug 9, thereby protecting the periphery of the nozzle 4 and preventing the nozzle 4 from being affected by the external airflow. As the sealing plug 9 continues to move downward, when the stopper 11 on the top of the sealing plug 9 contacts the sealing ring 10, the sealing plug 9 can stop moving under the restriction of the stopper 11. At this time, the gap between the sealing ring 10 and the sealing plug 9 also reaches its maximum.

[0058] When the pressure of the shielding gas decreases, the pressure of the shielding gas on the sealing plug 9 also decreases. At this time, the counterweight ring 12 can press the push rod 13 downward through the movable block 14. As the push rod 13 moves downward, the bottom end of the push rod 13 can squeeze the lower half of the conical surface of the sealing plug 9 through the roller 15. As the sealing plug 9 is squeezed, the sealing plug 9 can move upward, thereby reducing the gap between the sealing plug 9 and the sealing ring 10. As the gap between the two decreases, the pressure of the shielding gas when passing through the two is increased, thereby stabilizing the shielding gas pressure. In addition, since the counterweight ring 12 can always exert an upward push on the sealing plug 9 through the push rod 13, the sealing plug 9 can always cooperate with the sealing ring 10 to exert pressure on the shielding gas passing through the gap between the sealing plug 9 and the sealing ring 10, thereby ensuring that the shielding gas always maintains a certain pressure when passing through the gap between the two, thereby avoiding turbulence near the nozzle 4 due to insufficient shielding gas pressure, thereby ensuring the stability of the metal jet;

[0059] In addition, by using the counterweight ring 12 to apply pressure to the push rod 13 instead of using elastic components such as springs or shrapnel, it is possible to avoid the elastic loss of elastic components such as springs or shrapnel during long-term use, thereby preventing the loss of pressure on the push rod 13.

[0060] like Figures 2 to 6As shown, a limiting assembly is provided on the outside of the crucible 2 for supporting and limiting the position of the crucible 2 in the high-temperature heating furnace 1. The limiting assembly includes: a limiting ring 24, a supporting ring 25, a support rod 26, and a support ring 27. The limiting ring 24 is fixedly sleeved on the outside of the crucible 2, the supporting ring 25 is sleeved on the outside of the crucible 2, and the supporting ring 25 is supported on the bottom of the limiting ring 24. The support ring 27 is provided at the bottom of the supporting ring 25, and the outer diameter of the support ring 27 matches the inner diameter of the high-temperature heating furnace 1. There are multiple support rods 26, and the support rods 26 are evenly and fixedly connected between the supporting ring 25 and the support ring 27.

[0061] By setting a limiting component, when the crucible 2 is placed in the high-temperature heating furnace 1, as the crucible 2 is inserted into the inner side of the support ring 25, when the limiting ring 24 on the crucible 2 contacts the support ring 25, the support ring 25 can support and fix the crucible 2, so that the crucible 2 can remain coaxial with the high-temperature heating furnace 1, and can also limit the crucible 2, thereby ensuring that the crucible 2 is placed in the designated position in the high-temperature heating furnace 1 each time, ensuring that the fixed distance between the outer flow channel 3 and the nozzle 4 remains unchanged, thereby ensuring the stability of the subsequent metal jet.

[0062] like Figures 2 to 4 As shown, a filter assembly is provided on the outside of the crucible 2 for filtering the protective gas entering the outer flow channel 3. The filter assembly includes a filter tube 28, which is sleeved on the outside of the crucible 2 and located on the top of the limiting ring 24. The outer and inner sides of the filter tube 28 are respectively in contact with the inner wall of the high-temperature heating furnace 1 and the outer wall of the crucible 2, and the interior of the filter tube 28 is evenly filled with ceramsite filter material 29.

[0063] By providing a filter assembly, when the protective gas is squeezed into the area outside the crucible 2 through the second air inlet pipe 8, as the protective gas continues to pass downward through the filter tube 28, the ceramsite filter material 29 inside the filter tube 28 can filter the protective gas, thereby preventing impurities in the protective gas from being blown onto the nozzle 4 through the outer flow channel 3, thereby ensuring the stability of the metal jet.

[0064] like Figures 2 to 7As shown, a collecting assembly is provided on the vibrating rod 6 for collecting impurities floating on the top surface of the molten metal, and the collecting assembly includes: a collecting cover 16, a retaining ring 17, a limiting rod 18, a positioning block 19 and a positioning ring 20; the collecting cover 16 is funnel-shaped, and the collecting cover 16 is fixedly sleeved on the vibrating rod 6 for holding the collected metal impurities; the retaining ring 17 is provided on the top of the collecting cover 16, and the retaining ring 17 is coaxial with the collecting cover 16, and the outer diameter of the retaining ring 17 matches the diameter of the top opening of the collecting cover 16, and the retaining ring 17 is used to intercept impurities on the top of the collecting cover 16; there are multiple limiting rods 18, and the multiple limiting rods 18 are vertically fixedly connected to the top opening position of the collecting cover 16, and a fixed block is slidably sleeved on the limiting rod 18, and the fixed block is fixedly connected to the inner wall of the retaining ring 17; there are multiple positioning blocks 19, and the multiple positioning blocks 19 are fixedly connected The cam 17 is connected to the outer side of the retaining ring 17 near the top; the positioning ring 20 is fixedly connected to the crucible 2, and the positioning ring 20 is located at the bottom of the positioning block 19, which is used to cooperate with the positioning block 19 to limit the retaining ring 17; the pushing assembly is connected to the vibration rod 6 for driving the vibration rod 6 to move in the vertical direction; the pushing assembly includes a push plate 30, which is rotatably sleeved on the top of the vibration rod 6, and two pushers 31 are symmetrically and vertically fixedly connected between the bottom of the push plate 30 and the top rod 13. The pusher 31 can be an electric push rod, and a sealing plate 22 is sleeved on the vibration rod 6, and the top edge of the sealing plate 22 protrudes upward. The bottom of the top cover 5 is connected to an annular sealing groove 23 that matches the raised portion of the top edge of the sealing plate 22, and when the vibration rod 6 moves upward to the maximum displacement under the drive of the pushing assembly, the annular sealing groove 23 can fit together with the sealing plate 22;

[0065] By providing a collecting assembly, when adding metal raw materials into the crucible 2, impurities will inevitably be mixed into the metal raw materials. Later, as the top cover 5 is closed, the impurities will also remain in the crucible 2. At this time, as the high-temperature heating furnace 1 gradually heats and melts the metal raw materials in the crucible 2 rod, the impurities can float on the top surface of the molten metal. In the initial state, the pusher 31 is in an extended state, so that the collecting cover 16 can be driven by the vibrating rod 6 to hover on the top of the molten metal. When the molten metal is completely melted, as the pusher 31 shortens, the vibrating rod 6 can move downward under the pulling action of the pusher 31 on the push plate 30. In this process, the collecting cover 16 can move upward together with the retaining ring 17, and the bottom of the collecting cover 16 gradually contacts the metal. The top surface of the metal liquid approaches, and as the collecting cover 16 continues to descend, when the positioning block 19 on the retaining ring 17 contacts the positioning ring 20, the retaining ring 17 can be blocked, so that its bottom is gradually separated from the collecting cover 16, and when the collecting cover 16 contacts the surface of the metal liquid under the drive of the vibrating rod 6, as the collecting cover 16 squeezes the top surface of the metal liquid, the impurities floating on the top surface of the metal liquid can move along the bottom surface of the collecting cover 16 toward the top edge of the collecting cover 16, and as the vibrating rod 6 continues to drive the collecting cover 16 downward, when the top edge of the collecting cover 16 sinks into the metal liquid, the impurities floating on the top surface of the metal liquid can flow from the top edge of the collecting cover 16 into the collecting cover 16, thereby realizing the collection operation of the impurities;

[0066] When the collecting cover 16 completes the operation of collecting impurities, as the pushing member 31 drives the vibrating rod 6 to reset upward through the pushing plate 30, the collecting cover 16 can also drive the impurities to move upward together with the vibrating rod 6. In this process, when the collecting cover 16 contacts the retaining ring 17, the retaining ring 17 can block the top edge of the collecting cover 16, thereby limiting the impurities collected on the top of the collecting cover 16, thereby preventing the impurities collected on the collecting cover 16 from falling back into the molten metal due to the vibration of the vibrating rod 6 when the metal jet is subsequently ejected;

[0067] At the same time, as the collecting cover 16 is reset upward under the drive of the vibration rod 6, the sealing plate 22 can also be gradually plugged into the annular sealing groove 23, thereby closing the gap between the vibration rod 6 and the top cover 5, improving the sealing of the inner area of ​​the crucible 2, and thus ensuring that the molten metal can be smoothly ejected through the nozzle 4 under the action of air pressure.

[0068] like Figure 7As shown, the collecting cover 16 is provided with a toggle assembly, which includes: a toggle plate 21 and a driving assembly. The number of the toggle plates 21 is multiple, and the multiple toggle plates 21 are annularly distributed around the top edge of the collecting cover 16. The toggle plate 21 is inclined, and the side of the toggle plate 21 away from the collecting cover 16 is close to the inner wall of the crucible 2. The toggle plate 21 is fixedly connected to the collecting cover 16, and the top of the toggle plate 21 is higher than the top of the collecting cover 16, which is used to toggle the impurities into the collecting cover 16; the driving assembly is connected to the vibration rod 6 to drive the vibration rod 6 to rotate, the driving assembly includes a first bevel gear 32, the first bevel gear 32 is fixedly sleeved on the top end of the vibration rod 6, and the first bevel gear 32 is located at the bottom of the push plate 30, and a driving member 33 is installed on the top of the push rod 13. The driving member 33 can be a motor. The top end of the driving member 33 is connected to a second bevel gear 34, and the second bevel gear 34 can mesh with the first bevel gear 32 when the first bevel gear 32 moves downward to the maximum displacement;

[0069] When the collecting hood 16 contacts the surface of the molten metal under the drive of the vibrating rod 6, as the collecting hood 16 squeezes the top surface of the molten metal, the impurities floating on the top surface of the molten metal can move along the bottom surface of the collecting hood 16 toward the top edge of the collecting hood 16, and as the vibrating rod 6 continues to drive the collecting hood 16 downward, when the top edge of the collecting hood 16 sinks into the molten metal, the impurities floating on the top surface of the molten metal can flow from the edge of the collecting hood 16 into the collecting hood 16. At the same time, as the top edge of the collecting hood 16 is immersed in the molten metal, the first bevel gear 32 is also driven by the vibrating rod 6 to engage with the second bevel gear 34 at the top of the driving member 33. Then the driving member 33 can drive the second bevel gear 34 and the vibrating rod 6 to rotate through the first bevel gear 32. As the vibrating rod 6 rotates, the collecting hood 16 can drive multiple paddles 21 to paddle the impurities floating on the top surface of the molten metal along the edge position of the collecting hood 16, thereby accelerating the flow of impurities into the collecting hood 16 and improving the collection efficiency of the impurities by the collecting hood 16.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A gas-liquid channel separation uniform metal droplet stable injection device, characterized in that: include: A high-temperature heating furnace (1) is used to heat the metal raw material; A crucible (2), located inside the high-temperature heating furnace (1), for containing metal raw materials and their solutions; The spray assembly comprises an outer flow channel (3), a nozzle (4) and a control assembly, wherein the outer flow channel (3) is connected to the bottom of the high-temperature heating furnace (1) and is used to guide the airflow, the nozzle (4) is connected to the bottom of the crucible (2) and is used to spray metal droplets, and the control assembly is arranged between the outer flow channel (3) and the nozzle (4) and is used to control the stability of the airflow in the outer flow channel (3) when the nozzle (4) sprays metal droplets.

2. The gas-liquid channel separated uniform metal droplet stable injection device according to claim 1, characterized in that: Also includes: A top cover (5) is provided on the top of the crucible (2) and the high-temperature heating furnace (1); a vibration rod (6) inserted into the molten metal in the crucible (2) and used to generate vibration to assist the molten metal in forming a jet; a first air inlet pipe (7), connected to the top cover (5), and used for injecting protective gas into the crucible (2); A second air inlet pipe (8) is connected to the top cover (5) and is used to inject protective gas into the area between the crucible (2) and the high-temperature heating furnace (1).

3. The gas-liquid channel separated uniform metal droplet stable injection device according to claim 2, characterized in that: The control component includes: A sealing plug (9) is sleeved on the nozzle (4); A sealing ring (10) is connected to the outer flow channel (3) and is used to cooperate with the sealing plug (9) to control the airflow; a blocking rod (11), connected to the sealing plug (9), and used to limit the downward movement distance of the sealing plug (9); A reset component is arranged at the bottom of the sealing plug (9) and is used to drive the sealing plug (9) to reset upward after the metal droplets are sprayed.

4. The gas-liquid channel separated uniform metal droplet stable injection device according to claim 3, characterized in that: The reset component includes: A counterweight ring (12) is sleeved on the outer flow channel (3); A push rod (13) is arranged on the periphery of the sealing plug (9) and is used to push the sealing plug (9) to reset upward; A movable block (14) is connected to the counterweight ring (12) and is used to connect the push rod (13); A roller (15) is connected to the push rod (13) and is used to reduce the friction between the push rod (13) and the sealing plug (9).

5. The gas-liquid channel separated uniform metal droplet stable injection device according to claim 4, characterized in that: A limiting component is provided on the outer side of the crucible (2) for supporting and limiting the position of the crucible (2) in the high-temperature heating furnace (1).

6. The gas-liquid channel separated uniform metal droplet stable injection device according to claim 5, characterized in that: A filter assembly is provided on the outside of the crucible (2) for filtering the protective gas entering the outer flow channel (3).

7. The gas-liquid channel separated uniform metal droplet stable injection device according to claim 6, characterized in that: The vibrating rod (6) is provided with a collecting assembly for collecting impurities floating on the top surface of the molten metal. The collecting assembly comprises: A collecting cover (16) is connected to the vibrating rod (6) and is used to hold the collected metal impurities; a retaining ring (17), disposed on the top of the collecting cover (16), and used for intercepting impurities on the top of the collecting cover (16); A limiting rod (18) is connected between the collecting cover (16) and the retaining ring (17); A positioning block (19) connected to the retaining ring (17); A positioning ring (20) is connected to the crucible (2) and is used to cooperate with the positioning block (19) to restrict the retaining ring (17); The pushing assembly is connected to the vibration rod (6) and is used to drive the vibration rod (6) to move in a vertical direction.

8. The gas-liquid channel separated uniform metal droplet stable injection device according to claim 7, characterized in that: The collecting cover (16) is provided with a toggle assembly, which comprises: a paddle (21) connected to the collecting cover (16) and used to paddle impurities to allow them to enter the collecting cover (16); A driving assembly is connected to the vibration rod (6) and is used to drive the vibration rod (6) to rotate.

9. The gas-liquid channel separated uniform metal droplet stable injection device according to claim 8, characterized in that: A sealing plate (22) is sleeved on the vibration rod (6), and the top edge of the sealing plate (22) is raised upward. The bottom of the top cover (5) is connected to an annular sealing groove (23) that matches the raised portion of the top edge of the sealing plate (22). When the vibration rod (6) moves upward to the maximum displacement under the drive of the pushing component, the annular sealing groove (23) can be fitted together with the sealing plate (22).

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