Active powder feeding device

Abstract

The invention discloses an active powder feeding device, which belongs to the field of active powder atmosphere protection powder feeding and comprises a sealed environment protection box, a partition plate is arranged in the sealed environment protection box and divides the sealed environment protection box into an operation box and a main box body, a transition cabin is arranged on the side surface of the partition plate in a penetrating manner, and the transition cabin is communicated with the operation box and the main box body respectively; a drawing disc is arranged in the transition cabin in a sliding mode, an inner cabin door and an outer cabin door are arranged at the two ends of the transition cabin respectively, a first air pipe used for supplementing inert gas and a second air pipe used for vacuumizing the transition cabin are arranged on the peripheral face of the transition cabin, and a vacuum pump and an inert gas supplementing device are arranged in the sealed environment protection box. The end, away from the transition cabin, of the second air pipe is connected with an air exhaust hole of a vacuum pump, the first air pipe is connected with an inert gas replenisher box, and a powder feeder used for conveying active powder is arranged in the main box body. The feeding device has the effect of improving external atmosphere protection.

Description

Technical Field

[0001] The invention relates to the field of active powder atmosphere protection powder feeding, in particular to an active powder feeding device. Background Art

[0002] Powders used in laser chip processing primarily include graphite powder and tantalum pentoxide. These powders play a key role in laser chip fabrication. Tantalum pentoxide is a reactive powder with relatively active chemical properties, readily undergoing adsorption and catalytic reactions with surrounding substances. Tantalum pentoxide powder also reacts strongly with water and oxygen. These powders possess characteristics such as high specific surface area, high reactivity, and short diffusion distances. However, reactive powders also have drawbacks such as poor high-temperature resistance and susceptibility to oxidation at high temperatures.

[0003] Active powders are all canned powders, and the cans are filled with inert gas to prevent the active powder from oxidizing. When replenishing the active powder, the canned powder needs to be poured into the powder feeding device, which makes it possible for the active powder to come into contact with oxygen and oxidize during the powder feeding process. Summary of the Invention

[0004] In order to improve the problem that active powder is easily oxidized by contact with oxygen during the distribution process, the present application provides an active powder feeding device.

[0005] The active powder feeding device provided in this application adopts the following technical solution: A device for feeding active powder comprises a sealed environmental protection box, wherein a partition is provided in the sealed environmental protection box, wherein the partition separates the sealed environmental protection box into an operating box and a main box body, a transition cabin is passed through the side of the partition, wherein the transition cabin is respectively connected with the operating box and the main box body, a pull-out plate is slidingly provided in the transition cabin, an internal cabin door and an external cabin door are respectively provided at both ends of the transition cabin, an air pipe 1 for replenishing inert gas and an air pipe 2 for vacuuming the transition cabin are provided on the outer peripheral surface of the transition cabin, a vacuum pump and an inert gas replenisher are provided in the sealed environmental protection box, an end of the air pipe 2 away from the transition cabin is connected to the exhaust hole of the vacuum pump, the air pipe 1 is connected to the inert gas replenisher box, and a powder feeder for conveying active powder is provided in the main box body.

[0006] By adopting the above technical solution, the external hatch is opened, the pull-out tray is pulled out, and then the sealed canned active powder is placed on the pull-out tray. The pull-out tray is then pushed into the transition cabin and the external hatch is closed. Then, the vacuum pump is started to evacuate the transition cabin through the second air pipe. Then, the inert gas replenisher is started to replenish the gas into the transition cabin through the first air pipe. The vacuuming and replenishing of inert gas are repeated three times to make the water and oxygen environment in the transition cabin consistent with that in the main box, thereby reducing the possibility of oxidation of the active powder due to contact with oxygen when the powder feeder transports the active powder, thereby improving the active powder atmosphere protection powder feeding.

[0007] Preferably, the front end surface of the sealed environmental protection box is provided with two through holes, the two through holes are communicated with the main box body, a connecting tube is fixed in the through hole, and a sealing glove is fixed at one end of the connecting tube.

[0008] By adopting the above technical solution, when the transition chamber is vacuumed three times and supplemented with inert gas three times, so that the water and oxygen environment in the transition chamber is consistent with the water and oxygen environment in the main box, the staff passes their arms through the connecting pipe and inserts their arms into the sealed gloves. Then the staff opens the internal door through the sealed gloves and pulls out the pull-out tray, pours the active powder into the powder feeder, and allows the powder feeder to transport the active powder to the terminal for use.

[0009] Preferably, the powder feeder includes a powder barrel arranged in the main box body, the bottom end of the powder barrel is connected to a powder pan, a turntable is provided in the powder pan, the top surface of the turntable is provided with an annular powder groove, the bottom surface of the turntable is fixed with a connecting shaft, the bottom end of the connecting shaft passes through the bottom surface of the powder pan, the connecting shaft is rotatably connected to the powder pan, a driving member for driving the connecting shaft to rotate is provided in the main box body, and the powder pan is provided with a powder outlet, and the powder outlet is communicated with the annular powder groove.

[0010] By adopting the above technical solution, when the active powder needs to be transported to the terminal for use, a pipe is usually connected at the powder outlet, so that the end of the pipe away from the powder outlet is connected to the terminal, and then the staff passes the arm through the connecting pipe and inserts the arm into the sealing glove. Then the staff opens the internal compartment door through the sealing glove and pulls out the pull-out tray, and then rotates the sealing cover, removes the sealing cover from the top of the feed pipe, and pours the active powder on the pull-out tray into the feed pipe, so that the active powder is transported to the powder barrel through the feed pipe, and then transported to the powder tray through the powder barrel, so that the active powder in the powder barrel falls into the annular powder trough, and then the driving part drives the connecting shaft to rotate, and the connecting shaft drives the turntable to rotate. When the active powder in the annular powder trough moves to the powder outlet, the positive pressure in the powder tray squeezes the airflow in the powder tray through the powder outlet into the pipe, so that the airflow carries the active powder through the powder outlet into the pipe, and then the active powder is transported along the pipe to the terminal for use.

[0011] Preferably, a powder inlet block and a powder outlet block are provided in the powder tray, the bottom surfaces of the powder inlet block and the powder outlet block are respectively in contact with the top surface of the turntable, a powder inlet groove is provided on the top surface of the powder inlet block, a powder leakage groove is provided on the inner bottom surface of the powder inlet groove, and the powder leakage groove is connected to the annular powder groove, the bottom end of the powder barrel passes through the top end of the powder tray, and the bottom end of the powder barrel is located in the powder inlet groove.

[0012] By adopting the above technical solution, the active powder in the powder tube falls into the powder inlet trough, thereby facilitating the active powder to fall into the annular powder trough through the powder leakage trough. When the turntable rotates, the active powder in the annular powder trough moves to the position of the powder outlet block, thereby facilitating the active powder to be inhaled through the powder inlet hole.

[0013] Preferably, the driving member includes a motor 1 arranged on the bottom surface of the main box body, a transmission shaft is fixed to the top of the output shaft of the motor 1, a sliding groove is provided on the top surface of the transmission shaft, a sliding block is fixed to the bottom end of the connecting shaft, the sliding block is arranged in the sliding groove along the vertical sliding direction, a spring is provided on the peripheral side of the sliding block, the bottom end of the spring abuts against the top surface of the transmission shaft, and the top end of the spring abuts against the bottom surface of the connecting shaft.

[0014] By adopting the above technical solution, motor one is started, so that the output shaft of motor one drives the transmission shaft to rotate, the transmission shaft drives the sliding block to rotate, the sliding block drives the connecting shaft to rotate, and thus the connecting shaft drives the turntable to rotate; during the long-term rotation of the turntable, the top and bottom surfaces of the turntable are worn, and the connecting shaft moves upward under the elastic force of the spring, so that the connecting shaft drives the turntable to move upward, thereby making it easier for the top surface of the turntable to always fit with the bottom surfaces of the powder inlet block and the powder outlet block.

[0015] Preferably, a stirring rod is vertically arranged in the powder barrel, a mounting disk is fixed to the inner circumference of the powder barrel, the top end of the stirring rod passes through the mounting disk, the stirring rod is rotatably connected to the mounting disk, a gear is provided at the top end of the stirring rod, a driving cap is sleeved on the circumference of the gear, a gear ring is fixed on the inner circumference of the driving cap, the gear ring is meshed with the gear, a rotating shaft is fixed on the top surface of the driving cap, the top end of the rotating shaft passes through the top surface of the powder barrel, the rotating shaft is rotatably connected to the powder barrel, and a power part for driving the rotating shaft to rotate is provided on the top surface of the powder barrel.

[0016] By adopting the above technical solution, when the active powder is poured into the powder barrel, the power piece is started, so that the power piece drives the rotating shaft to rotate, the rotating shaft drives the driving cap to rotate, the driving cap drives the ring gear to rotate, the ring gear drives the gear to rotate, and the gear drives the stirring rod to rotate, so that the stirring rod stirs the active powder in the powder barrel, thereby reducing the possibility of the active powder agglomerating in the powder barrel.

[0017] Preferably, a mounting box is fixed to the top surface of the powder cartridge, the power component includes a magnetic transmission shaft rotatably mounted on the inner top surface of the mounting box, the top end of the rotating shaft is fixed to the bottom surface of the magnetic transmission shaft, a worm gear is provided on the magnetic transmission shaft, a worm gear is rotatably mounted between the opposite inner side surfaces of the mounting box, the worm gear is engaged with the worm gear, and a motor 2 is fixed to the side surface of the mounting box, the motor 2 and the output shaft of the motor 2 are fixedly connected to one end of the worm gear.

[0018] By adopting the above technical solution, motor 2 is started, the output shaft of motor 2 drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the magnetic transmission shaft to rotate, and the magnetic transmission shaft drives the rotating shaft to rotate.

[0019] Preferably, it also includes a water and oxygen detection closed-loop control system, which includes a water and oxygen detection sensor arranged in the main box body, and a purification column and a circulating fan are arranged on the bottom surface of the sealed environmental protection box. The circulating fan is used to extract the gas in the main box body, and the purification column is used to purify the gas extracted by the circulating fan.

[0020] By adopting the above technical solution, the water and oxygen content in the main box is detected by the water and oxygen detection sensor, and the detected signal is transmitted to the terminal. The terminal sets the water and oxygen concentrations in the main box. The terminal judges the water and oxygen content in the main box according to the detection data of the water and oxygen detection sensor. When the water and oxygen concentrations detected by the water and oxygen detection sensor are greater than the water and oxygen concentrations set by the terminal, the terminal automatically starts the circulation fan and purification column to purify and filter the water and oxygen until the set value is reached.

[0021] Preferably, the main box, the circulating fan and the purification column are respectively connected to the vacuum pump and the inert gas supplementer.

[0022] By adopting the above technical solution, the main box, circulating fan and purification column are connected to the vacuum pump and inert gas supplementer respectively. Before the powder feeder is operated, the main box needs to be evacuated and inert gas is supplemented so that the water and oxygen content of the main box meets the requirements. The circulating fan and purification column are evacuated and inert gas is supplemented to improve the utilization efficiency of the subsequent two devices.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. Open the external hatch, pull out the pull-out tray, and then place the sealed canned active powder on the pull-out tray. Then push the pull-out tray into the transition chamber and close the external hatch. Then start the vacuum pump to evacuate the transition chamber through air pipe 2. Then start the inert gas replenisher to replenish gas into the transition chamber through air pipe 1. Repeat the vacuuming and inert gas replenishment three times to make the water and oxygen environment in the transition chamber consistent with that in the main chamber. This reduces the possibility of active powder coming into contact with oxygen and causing oxidation when the powder feeder transports the active powder, thereby improving the active powder feeding atmosphere protection. 2. After the transition chamber is vacuumed three times and inert gas is replenished three times, so that the water and oxygen environment in the transition chamber is consistent with that in the main chamber, the worker passes his arm through the connecting tube and inserts his arm into the sealing glove. Then, the worker opens the internal door through the sealing glove and pulls out the pull-out tray, pouring the active powder into the powder feeder, which then transports the active powder to the terminal for use. 3. When the active powder needs to be transported to the terminal for use, a pipe is usually connected at the powder outlet, and the end of the pipe away from the powder outlet is connected to the terminal. The staff then passes their arm through the connecting pipe and inserts their arm into the sealing glove. The staff then opens the internal compartment door through the sealing glove and pulls out the pull-out tray. The sealing cover is then rotated and removed from the top of the feed pipe. The active powder on the pull-out tray is poured into the feed pipe, so that the active powder is transported to the powder barrel through the feed pipe, and then transported to the powder pan through the powder barrel, so that the active powder in the powder barrel falls into the annular powder trough. The driving member then drives the connecting shaft to rotate, and the connecting shaft drives the turntable to rotate. When the active powder in the annular powder trough moves to the powder outlet, the positive pressure in the powder pan squeezes the airflow in the powder pan through the powder outlet and flows into the pipe, so that the airflow carries the active powder through the powder outlet into the pipe, and then the active powder is transported along the pipe to the terminal for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the active powder feeding device of an embodiment of the present application.

[0025] Figure 2 It is a structural diagram of the operation box in the embodiment of the present application.

[0026] Figure 3 It is a structural diagram of the transition cabin in an embodiment of the present application.

[0027] Figure 4 It is a structural schematic diagram of the connecting pipe in an embodiment of the present application.

[0028] Figure 5 It is a structural schematic diagram of the barrel in the embodiment of the present application.

[0029] Figure 6It is a cross-sectional view of the barrel in the embodiment of the present application.

[0030] Figure 7 It is a cross-sectional view of the powder tray in the embodiment of the present application.

[0031] Figure 8 It is a structural diagram of the turntable in the embodiment of the present application.

[0032] Figure 9 yes Figure 7 Enlarged schematic diagram of point A in the middle.

[0033] Figure numerals: 1, sealed environmental protection box; 11, partition; 12, operating box; 13, main box body; 14, transition cabin; 15, internal door; 16, external door; 17, pull-out tray; 2, vacuum pump; 21, inert gas replenisher; 22, air pipe 1; 23, air pipe 2; 24, mounting hole; 25, connecting pipe; 3, powder feeder; 31, powder barrel; 311, barrel body; 312, barrel cover; 32, feed pipe; 33, sealing cover; 34, stirring rod; 35, mounting plate; 36, gear; 37, drive cap; 38, gear ring; 39, rotating shaft; 4, installation Packing box; 41. Magnetic transmission shaft; 42. Worm gear; 43. Worm; 44. Motor 2; 5. Powder tray; 51. Turntable; 52. Annular powder trough; 53. Powder inlet block; 54. Powder inlet trough; 55. Powder leakage trough; 56. Powder outlet block; 57. Conical trough; 58. Powder inlet hole; 59. Powder outlet; 6. Connecting shaft; 61. Through hole; 62. Motor 1; 63. Transmission shaft; 64. Sliding groove; 65. Sliding block; 66. Spring; 7. Water and oxygen detection closed-loop control system; 71. Water and oxygen detection sensor; 72. Purification column; 73. Circulation fan; 74. Exhaust filter. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-9 This application is described in further detail.

[0035] The embodiment of the present application discloses an active powder feeding device.

[0036] Reference Figure 1 and Figure 2 An active powder feeding device includes a sealed environmental protection box 1 and a water and oxygen detection closed-loop control system 7. A partition 11 is fixed inside the sealed environmental protection box 1, which separates the sealed environmental protection box 1 into an operating box 12 and a main box body 13. A transition chamber 14 is fixed to the side of the partition 11 and is connected to the operating box 12 and the main box body 13 respectively.

[0037] Reference Figure 3 、 Figure 4 and Figure 5A pull-out tray 17 is slidably provided in the transition chamber 14, and an inner door 15 and an outer door 16 are respectively installed at both ends of the transition chamber 14. An air pipe 1 22 for replenishing inert gas and an air pipe 2 23 for evacuating the transition chamber 14 are fixed to the outer peripheral surface of the transition chamber 14. Air pipe 1 22 and air pipe 2 23 are respectively connected to the transition chamber 14. A vacuum pump 2 and an inert gas replenisher 21 are installed in the sealed environmental protection box 1. The end of air pipe 23 away from the transition chamber 14 is connected to the exhaust hole of the vacuum pump 2. Air pipe 1 22 is connected to the inert gas replenisher 21. A powder feeder 3 for conveying active powder is provided in the main box body 13. Two mounting holes 24 are provided on the front face of the sealed environmental protection box 1. The two mounting holes 24 are connected to the main box body 13. A connecting pipe 25 is fixed in the mounting hole 24. A sealing glove is fixed to one end of the connecting pipe 25. The sealing glove is not shown in the prior art drawings.

[0038] Reference Figure 2 and Figure 5 The powder feeder 3 includes a powder barrel 31 disposed in the main housing 13. The powder barrel 31 includes a barrel body 311. A barrel cover 312 is provided at the top of the barrel body 311. The barrel cover 312 is fixedly connected to the barrel body 311 by bolts. The outer circumference of the barrel body 311 is provided with a resistance heating wire for heating the barrel body 311. The resistance heating wire is a prior art and is not shown in the accompanying drawings. A feed pipe 32 is fixed to the top surface of the barrel cover 312. The feed pipe 32 is connected to the barrel body 311. A sealing cover 33 is provided at the top of the feed pipe 32. The sealing cover 33 is threadedly connected to the feed pipe 32. A stirring rod 34 for stirring the active powder is vertically arranged in the barrel body 311. A mounting disc 35 is fixed to the inner circumference of the barrel body 311. The top of the stirring rod 34 passes through the mounting disc 35. The stirring rod 34 is rotatably connected to the mounting disc 35. A gear 36 is sleeved and fixed to the top of the stirring rod 34. A drive cap 37 is sleeved around the circumference of the gear 36. A ring gear 38 is fixed to the inner circumference of the drive cap 37, and the ring gear 38 meshes with the gear 36. A rotating shaft 39 is inserted and fixed to the top surface of the drive cap 37. The top end of the rotating shaft 39 passes through the top surface of the cylinder cover 312, and the rotating shaft 39 is rotatably connected to the cylinder cover 312.

[0039] Reference Figure 6 The top surface of the cylinder cover 312 is fixed with a mounting box 4, which is in communication with the cylinder cover 312. A vertically arranged magnetic transmission shaft 41 is rotatably mounted within the mounting box 4, and the top end of the rotating shaft 39 is fixed to the bottom surface of the magnetic transmission shaft 41. A worm gear 42 is sleeved and fixed to the top end of the magnetic transmission shaft 41. A worm 43 is rotatably mounted between the opposing inner side surfaces of the mounting box 4, and the worm 43 meshes with the worm gear 42. A second motor 44 is fixed to the side of the mounting box 4, and the output shaft of the second motor 44 is fixedly connected to one end of the worm 43.

[0040] Reference Figure 5 、 Figure 7 and Figure 8 The bottom end of the barrel 311 is provided with a powder tray 5, which is fixed to the inner bottom surface of the main box 13. A turntable 51 is provided in the powder tray 5, and the top surface of the turntable 51 is provided with an annular powder groove 52. A powder inlet block 53 and a powder outlet block 56 are fixed in the powder tray 5, and the bottom surfaces of the powder inlet block 53 and the powder outlet block 56 are respectively in contact with the top surface of the turntable 51. The top surface of the powder inlet block 53 is provided with a powder inlet groove 54, and the inner bottom surface of the powder inlet groove 54 is provided with a powder leakage groove 55, which is connected to the annular powder groove 52. The bottom end of the barrel 311 passes through the top of the powder tray 5, and the bottom end of the powder barrel 31 is located in the powder inlet groove 54. The barrel 311 is fixedly connected to the powder tray 5. The top surface of the powder outlet block 56 is provided with a conical groove 57, and the inner bottom surface of the conical groove 57 is provided with a powder inlet hole 58. A powder outlet 59 is fixed on the top surface of the powder tray 5 , and the powder outlet 59 is communicated with the tapered groove 57 .

[0041] Reference Figure 2 、 Figure 7 and Figure 9 A connecting shaft 6 is fixed to the bottom surface of the rotating disk 51. A through hole 61 is defined in the inner bottom surface of the powder tray 5, through which the bottom end of the connecting shaft 6 passes. A motor 1 62 is fixed to the inner bottom surface of the main housing 13. A transmission shaft 63 is fixed to the top of the output shaft of motor 1 62. A sliding groove 64 is defined in the top surface of transmission shaft 63. A sliding block 65 is fixed to the bottom end of the connecting shaft 6. The sliding block 65 slides vertically within the sliding groove 64. A spring 66 is provided around the periphery of the sliding block 65. The bottom end of the spring 66 abuts the top surface of the transmission shaft 63, and the top end of the spring 66 abuts the bottom surface of the connecting shaft 6.

[0042] Reference Figure 1 and Figure 2 The water and oxygen detection closed-loop control system 7 includes a water and oxygen detection sensor 71 disposed in the main housing 13. A purification column 72 and a circulating fan 73 are disposed on the bottom surface of the sealed environmental protection box 1. The circulating fan 73 is used to extract the gas in the main housing 13, and the purification column 72 is used to purify the gas extracted by the circulating fan 73. The main housing 13, the circulating fan 73, and the purification column 72 are respectively connected to the vacuum pump 2 and the inert gas replenisher 21. An exhaust filter 74 is installed in the main housing 13. When the air pressure in the main housing 13 is too high, the exhaust filter 74 facilitates exhaust of the main housing 13.

[0043] The implementation principle of an active powder feeding device in an embodiment of the present application is: open the external hatch 16, pull out the pull-out tray 17, and then place the sealed canned active powder on the pull-out tray 17, then push the pull-out tray 17 into the transition chamber 14 and close the external hatch 16, then start the vacuum pump 2, so that the vacuum pump 2 vacuums the transition chamber 14 through the air pipe 2 23, and then start the inert gas replenisher 21, so that the inert gas replenisher 21 replenishes the gas in the transition chamber 14 through the air pipe 1 22, repeat the vacuuming and replenishing of inert gas three times, so that the water and oxygen environment in the transition chamber 14 is consistent with that in the main box 13. The worker then inserts his arm through the connecting tube 25 and into the sealing glove, extending his arm into the main housing 13. He then opens the internal hatch 15, pulls out the pull-out tray 17, and unscrews the sealing cap 33 on the top of the feed tube 32. He pours the active powder from the sealed can on the pull-out tray 17 into the feed tube 32, allowing the active powder to fall into the powder cartridge 31 through the feed tube 32. Then, the second motor 44 is started. The output shaft of the second motor 44 drives the worm 43 to rotate. The worm 43 drives the worm gear 42 to rotate, which in turn drives the magnetic transmission shaft 41 to rotate. The magnetic transmission shaft 41 drives the rotating shaft 39 to rotate, which in turn drives the stirring rod 34 to rotate, causing the stirring rod 34 to stir the active powder in the powder cartridge 31, thereby reducing the possibility of the active powder clumping in the powder cartridge 31. Then the active powder falls into the powder inlet trough 54 through the powder barrel 31, and the active powder falls into the annular powder trough 52 through the powder leakage trough 55, and the motor 1 62 is started to make the motor 1 62, and the output shaft of the motor 1 62 drives the transmission shaft 63 to rotate, and the transmission shaft 63 drives the sliding block 65 to rotate, and the sliding block 65 drives the connecting shaft 6 to rotate, so that the connecting shaft 6 drives the turntable 51 to rotate, and the turntable 51 drives the active powder to move, so that the active powder moves to the powder outlet 59, and the positive pressure in the powder tray 5 squeezes the air flow in the powder tray 5 through the powder outlet 59. The powder outlet 59 will be connected in advance to the pipeline for introducing the active powder into the terminal use, so that the air flow at the powder outlet 59 carries the active powder into the pipeline, and then when the active powder is transported along the pipeline to the terminal use, the possibility of the active powder coming into contact with oxygen and being oxidized when the powder feeder 3 transports the active powder is reduced, thereby improving the active powder atmosphere protection powder feeding.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An active powder feeding device, comprising a sealed environmental protection box (1), characterized in that: A partition (11) is provided in the sealed environment protection box (1), and the partition (11) separates the sealed environment protection box (1) into an operation box (12) and a main box body (13). A transition cabin (14) is provided on the side of the partition (11), and the transition cabin (14) is respectively connected to the operation box (12) and the main box body (13). A pull-out tray (17) is slidably provided in the transition cabin (14), and an inner door (15) and an outer door (16) are respectively provided at both ends of the transition cabin (14). The outer peripheral surface of the (14) is provided with an air pipe 1 (22) for replenishing inert gas and an air pipe 2 (23) for evacuating the transition chamber (14), a vacuum pump (2) and an inert gas supplementer (21) are provided in the sealed environmental protection box (1), the end of the air pipe 2 (23) away from the transition chamber (14) is connected to the exhaust hole of the vacuum pump (2), the air pipe 1 (22) is connected to the inert gas supplementer (21) box, and a powder feeder (3) for conveying active powder is provided in the main box body (13).

2. The active powder feeding device according to claim 1, characterized in that: The front end surface of the sealed environmental protection box (1) is provided with two through holes (61), the two through holes (61) are connected to the main box body (13), a connecting pipe (25) is fixed in the through hole (61), and a sealing glove is fixed to one end of the connecting pipe (25).

3. The active powder feeding device according to claim 2, characterized in that: The powder feeder (3) includes a powder barrel (31) arranged in the main housing (13), the bottom end of the powder barrel (31) is connected to a powder pan (5), a turntable (51) is arranged in the powder pan (5), the top surface of the turntable (51) is provided with an annular powder groove (52), a connecting shaft (6) is fixed to the bottom surface of the turntable (51), the bottom end of the connecting shaft (6) passes through the bottom surface of the powder pan (5), the connecting shaft (6) is rotatably connected to the powder pan (5), a driving member for driving the connecting shaft (6) to rotate is arranged in the main housing (13), and a powder outlet (59) is provided on the powder pan (5), and the powder outlet (59) is communicated with the annular powder groove (52).

4. The active powder feeding device according to claim 3, characterized in that: The powder tray (5) is provided with a powder inlet block (53) and a powder outlet block (56), the bottom surfaces of the powder inlet block (53) and the powder outlet block (56) are respectively in contact with the top surface of the turntable (51), the top surface of the powder inlet block (53) is provided with a powder inlet groove (54), the inner bottom surface of the powder inlet groove (54) is provided with a powder leakage groove (55), and the powder leakage groove (55) is connected to the annular powder groove (52), the bottom end of the powder barrel (31) passes through the top end of the powder tray (5), and the bottom end of the powder barrel (31) is located in the powder inlet groove (54).

5. The active powder feeding device according to claim 4, characterized in that: The driving member includes a motor (62) arranged on the bottom surface of the main box (13), a transmission shaft (63) is fixed to the top of the output shaft of the motor (62), a sliding groove (64) is provided on the top surface of the transmission shaft (63), a sliding block (65) is fixed to the bottom end of the connecting shaft (6), the sliding block (65) is arranged in the sliding groove (64) along the vertical sliding direction, a spring (66) is provided on the peripheral side of the sliding block (65), the bottom end of the spring (66) is in contact with the top surface of the transmission shaft (63), and the top end of the spring (66) is in contact with the bottom surface of the connecting shaft (6).

6. The active powder feeding device according to claim 5, characterized in that: A stirring rod (34) is vertically arranged in the powder barrel (31), and a mounting plate (35) is fixed to the inner circumference of the powder barrel (31). The top end of the stirring rod (34) passes through the mounting plate (35), and the stirring rod (34) is rotatably connected to the mounting plate (35). A gear (36) is arranged at the top end of the stirring rod (34), and a driving cap (37) is sleeved on the circumference of the gear (36). A gear ring (38) is fixed to the inner circumference of the driving cap (37), and the gear ring (38) is meshed with the gear (36). A rotating shaft (39) is fixed to the top surface of the driving cap (37), and the top end of the rotating shaft (39) passes through the top surface of the powder barrel (31). The rotating shaft (39) is rotatably connected to the powder barrel (31), and a power part for driving the rotating shaft (39) to rotate is provided on the top surface of the powder barrel (31).

7. The active powder feeding device according to claim 6, characterized in that: The top surface of the powder cartridge (31) is fixed with a mounting box (4), the power component includes a magnetic transmission shaft (63) (41) rotatably mounted on the inner top surface of the mounting box (4), the top end of the rotating shaft (39) is fixed to the bottom surface of the magnetic transmission shaft (63), a worm gear (42) is provided on the magnetic transmission shaft (63), a worm (43) is rotatably mounted between the opposite inner side surfaces of the mounting box (4), the worm gear (43) is meshed with the worm gear (42), and a motor 2 (44) is fixed to the side surface of the mounting box (4), the output shaft of the motor 2 (44) is fixedly connected to one end of the worm gear (43).

8. The active powder feeding device according to claim 7, characterized in that: The invention also includes a water and oxygen detection closed-loop control system (7), wherein the water and oxygen detection closed-loop control system (7) includes a water and oxygen detection sensor (71) arranged in the main box (13); a purification column (72) and a circulation fan (73) are arranged on the bottom surface of the sealed environmental protection box (1); the circulation fan (73) is used to extract the gas in the main box (13); and the purification column (72) is used to purify the gas extracted by the circulation fan (73).

9. The active powder feeding device according to claim 8, characterized in that: The main box (13), the circulating fan (73) and the purification column (72) are respectively connected to the vacuum pump (2) and the inert gas replenisher (21).

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