A powder collecting device for processing of a nickel-titanium pre-alloy powder

Abstract

The utility model discloses a kind of powder collecting devices for nickel-titanium pre-alloy powder processing, including mounting bracket, collection box and nitrogen cylinder, there is guide pipe and discharge pipe in communication on collection box, air blowing cylinder and screening filter cartridge are equipped on collection box, the both ends of air blowing cylinder are respectively detachably connected with guide pipe and screening filter cartridge, air blowing cylinder includes prestorage room, airflow room and valve, collection box includes gas supply pipe and exhaust port in communication with airflow room, the output end of exhaust port is communicated with gas guide pipe, gas pump is installed on gas guide pipe, gas supply pipe is communicated with the gas outlet end on nitrogen cylinder, the output end of gas supply pipe is communicated with gas pump, screening filter cartridge includes a plurality of filter holes on it.The beneficial effects of the utility model are that the frequency of powder plugging screening filter cartridge can be reduced while screening powder by nitrogen during powder collection, nitrogen is recycled, nitrogen use cost is reduced, and it has high practicability;And screening filter cartridge can be easily disassembled for regular cleaning, which is convenient for subsequent use.

Description

Technical Field

[0001] This utility model relates to the field of alloy powder processing technology, and more specifically, it relates to a powder collection device for nickel-titanium pre-alloy powder processing. Background Technology

[0002] Currently, two main types of raw material powders are used in the preparation of nickel-titanium alloys using additive manufacturing technology. One is nickel-titanium pre-alloy powder, and the other, in some cases, is an elemental powder composed of nickel and titanium powder. The preparation methods for nickel-titanium pre-alloy powder mainly cover three methods: plasma rotating electrode atomization (PREP), electrode induction melting atomization (EIGA), and plasma filament atomization (PA). The technical principle of plasma rotating electrode atomization (PREP) is that, under the protection of a high-purity inert atmosphere, plasma is used to arc and melt the tip of a high-speed rotating electrode rod. The centrifugal force generated by the high-speed rotation of the electrode rod ejects the molten metal and atomizes it into fine droplets. These atomized metal droplets gradually condense in the inert atmosphere, eventually forming spherical powder. After the nickel-titanium pre-alloy powder is prepared, a corresponding collection device is usually used to collect the powder.

[0003] The utility model patent with application number 202222817379.8 discloses a TC4 titanium alloy powder collection device. By opening multiple screening and collection chambers inside the powder collection box, the powder generated from the processing of TC4 titanium alloy powder can be precisely screened and collected in grades, thereby improving the subsequent production effect of hot pressing TC4 titanium alloy powder into rods. The pore size of the filter plate, the first screening filter screen and the second screening filter screen decreases from top to bottom, which facilitates the graded collection of TC4 titanium alloy powder. The setting of the sensing mechanism can drive the TC4 titanium alloy powder to vibrate and feed, thereby improving the feeding speed.

[0004] In existing technologies, although powder can be sieved during the powder collection process, the powder accumulated on the surface of the filter plate and sieve screen can easily clog the filter holes of the filter plate and the mesh of the sieve screen, resulting in reduced sieving efficiency or even the inability to continue sieving powder. Even though the operation of the vibration motor can generate a certain excitation source to vibrate the filter plate and sieve screen, which can theoretically alleviate clogging, the actual effect of the vibration motor in alleviating clogging is limited. In particular, the mesh of the second sieve screen is small, which makes it prone to frequent powder clogging problems, affecting powder sieving. Nitrogen cannot be used for powder sieving and the nitrogen cannot be recycled to reduce the frequency of powder clogging during sieving and reduce nitrogen usage costs. Furthermore, it is inconvenient to disassemble the sieve screen for regular cleaning for subsequent use. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a powder collection device for nickel-titanium pre-alloy powder processing.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A powder collection device for nickel-titanium pre-alloy powder processing includes a mounting frame, a collection box, and a nitrogen cylinder. The collection box is fixed on the mounting frame. The top of the collection box includes a guide pipe to facilitate powder entry into the collection box, and the bottom of the collection box includes a discharge pipe to facilitate powder discharge. A cap is threaded onto the discharge pipe. The collection box is equipped with an air blowing cylinder detachably connected to the guide pipe and a sieving filter cylinder detachably connected to the air blowing cylinder. The sieving filter cylinder is placed inside the collection box. Both ends of the air blowing cylinder are connected to the guide pipe and the sieving filter cylinder, respectively. The air blowing cylinder includes a pre-storage chamber corresponding to the guide pipe. The collection box includes an airflow chamber corresponding to the sieving filter cartridge and a valve for controlling the connection or closure of the pre-storage chamber and the airflow chamber. The collection box includes an exhaust port, the output end of which is connected to an air intake pipe. An air pump for delivering nitrogen from the collection box to the airflow chamber is installed at the output end of the air intake pipe. The air pump is installed on the top outer wall of the collection box. The collection box includes an air delivery pipe connected to the airflow chamber. The air delivery pipe is connected to the output end of the air pump and to the outlet end of the nitrogen cylinder. The sieving filter cartridge includes several filter holes for easy sieving of powder. The diameter of the filter holes decreases from the inside to the outside along the wall thickness of the sieving filter cartridge.

[0008] Further configured, the collection box has an installation hole for movably connecting with the screening filter cylinder, a first retaining ring is installed at the opening of the screening filter cylinder, the outer diameter of the first retaining ring is larger than the diameter of the installation hole, the first retaining ring has a first screw hole, a second retaining ring corresponding to the first retaining ring is installed on the air blower, the second retaining ring has a second screw hole corresponding to the first screw hole, and a third screw hole corresponding to the first screw hole is opened on the collection box, the first screw hole, the second screw hole and the third screw hole are bolted together.

[0009] A further configuration is that a flexible hose is installed at the output end of the feed pipe, and the flexible hose is inserted into the air blower and corresponds to the pre-storage chamber.

[0010] A further configuration is provided, wherein an elastic rubber ring is installed around the output end of the hose, and the rubber ring is interference-fitted with the inner wall of the top of the pre-storage chamber.

[0011] A further configuration is provided, wherein the air blowing cylinder is provided with an L-shaped support rod, one end of which is fixedly connected to the air blowing cylinder, and the other end of which is rotatably connected to the collection box through a rolling bearing.

[0012] A further configuration is provided, wherein the output end of the exhaust port is connected to a transparent tube that is connected to the priming pipe, a filter screen for filtering powder is installed inside the transparent tube, a branch pipe is connected to the gas supply pipe, a one-way valve is installed on the branch pipe, and the branch pipe is connected to the gas outlet end of the nitrogen cylinder.

[0013] A further configuration is that the exhaust port is located on the upper part of the collection box, and the inlet opening of the exhaust port faces the top of the collection box.

[0014] A further configuration is provided, wherein both ends of the transparent tube are fitted with screw tubes, the input end of the air intake tube is also fitted with a screw tube, the inner wall of the exhaust port is threaded, the screw tube at one end of the transparent tube is threadedly connected to the exhaust port, a threaded sleeve is provided between the air intake tube and the transparent tube, and the screw tube at the other end of the transparent tube and the screw tube at the input end of the air intake tube are respectively threadedly connected to both ends of the threaded sleeve.

[0015] Further configured, the air-blowing cylinder is hourglass-shaped.

[0016] A further configuration is that the bottom of the collection box is inclined, and the bottom of the collection box is inclined toward the discharge pipe.

[0017] By adopting the above technical solution, the beneficial effects of this utility model are as follows: it can alleviate the problem of powder clogging the filter holes of the sieving filter cartridge during the powder collection process by using nitrogen to sieve the powder, thereby reducing the sieving effect or even preventing the powder from being sieved. It reduces the frequency of powder clogging of the sieving filter cartridge, and the nitrogen is recycled, reducing the cost of nitrogen use. It is highly practical. It is also convenient to disassemble the sieving filter cartridge for regular cleaning, which is convenient for subsequent use. Attached Figure Description

[0018] Fig. 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0019] Fig. 2 This is a schematic diagram of the structure of the sieving filter cartridge and the air blowing cartridge working together.

[0020] Fig. 3 This is a schematic diagram of the structure of the drainage tube and the transparent tube in combination.

[0021] In the diagram: 1. Mounting frame; 2. Collection box; 3. Feed guide pipe; 4. Discharge pipe; 41. Cover; 5. Air blower; 6. Screening filter cartridge; 51. Pre-storage chamber; 52. Airflow chamber; 53. Valve; 7. Exhaust port; 8. Air duct; 9. Air supply pipe; 10. Filter hole; 61. Mounting hole; 11. First retaining ring; 12. First screw hole; 121. Second retaining ring; 13. Second screw hole; 131. Third screw hole; 14. Hose; 15. Elastic rubber ring; 151. Support rod; 16. Transparent tube; 17. Filter screen; 18. Branch pipe; 101. One-way valve; 102. Screw tube; 19. Threaded sleeve; 20. Detailed Implementation

[0022] Reference Figs. 1 to 3 The embodiments of this utility model will be further described below.

[0023] A powder collection device for nickel-titanium pre-alloy powder processing includes a mounting frame 1, a collection box 2, and a nitrogen cylinder. The nitrogen cylinder is prior art and will not be described in detail; it is not shown in the figure. The collection box 2 is fixed to the mounting frame 1. The top of the collection box 2 includes a guide pipe 3 to facilitate powder entry into the collection box 2, and the bottom of the collection box 2 includes a discharge pipe 4 to facilitate powder discharge. The bottom of the collection box 2 is inclined, and the bottom of the collection box 2 slopes towards the discharge pipe 4. A cap 41 is threaded onto the discharge pipe 4. The collection box 2 is equipped with an air blower 5 detachably connected to the guide pipe 3 and a sieve filter 6 detachably connected to the air blower 5. The sieve filter 6 is placed in the collection box. Inside the box 2, the two ends of the air blowing cylinder 5 are connected to the feed pipe 3 and the sieving filter cylinder 6, respectively. The air blowing cylinder 5 is hourglass-shaped and includes a pre-storage chamber 51 corresponding to the feed pipe 3, an airflow chamber 52 corresponding to the sieving filter cylinder 6, and a valve 53 for controlling the connection or closure of the pre-storage chamber 51 and the airflow chamber 52. The collection box 2 includes an air supply pipe 10 connected to the airflow chamber 52. A branch pipe 101 is connected to the air supply pipe 10. A one-way valve 102 is installed on the branch pipe 101. The branch pipe 101 is connected to the air outlet of the nitrogen cylinder. The sieving filter cylinder 6 includes a number of filter holes 61 for easy sieving of powder. The diameter of the filter holes 61 decreases from the inside to the outside along the wall thickness of the sieving filter cylinder 6.

[0024] Working principle: When the valve 53 on the air blower 5 is opened, the powder enters the sieving filter cylinder 6 in the collection box 2 through the guide pipe 3 and the air blower 5. The diameter of the filter holes 61 on the sieving filter cylinder 6 decreases from the inside to the outside, so that when the powder passes through the sieving filter cylinder 6, the larger particles are blocked in the sieving filter cylinder 6 according to their particle size, while the smaller particles pass through the filter holes 61 and enter the bottom of the collection box 2. The bottom of the collection box 2 is inclined and tilted towards the discharge pipe 4, so that the collected powder can be discharged through the discharge pipe 4.

[0025] When the powder passes through the air blower 5, it enters the pre-storage chamber 51 of the air blower 5 for temporary storage. The valve 53 on the air blower 5 is opened halfway to allow a small amount of powder from the pre-storage chamber 51 to enter the airflow chamber 52. Simultaneously, the pressure reducing valve on the nitrogen cylinder and the one-way valve 102 on the branch pipe 101 are opened, allowing nitrogen to enter the airflow chamber 52 of the air blower 5 via the air supply pipe 10, and then enter the sieving filter cartridge 6. The impact of the nitrogen airflow causes the powder to tumble and disperse within the sieving filter cartridge 6. The hourglass shape of the air blower 5 reduces the impact force of the nitrogen airflow on the powder within the sieving filter cartridge 6. Powder particles smaller than the filter holes 61 are blown out of the sieving filter cartridge 6, pass through the filter holes 61, and enter the collection box 2. Larger particle sizes are cut off... The powder collected in the sieving filter cartridge 6 is dynamically sieved into the collection box 2. The powder in the collection box 2 slides along the inclined bottom of the box to the discharge pipe 4. The discharge pipe 4 is opened by rotating the cover 41 to facilitate the discharge of powder from the collection box 2. The powder collected in the sieving filter cartridge 6 is periodically disassembled and manually cleaned out for further processing. At the same time, the nitrogen gas flow in the sieving filter cartridge 6 continuously reduces the problem of powder clogging the filter holes 61. This allows the powder to be sieved during the collection process while alleviating the problem of powder clogging the filter holes 61 of the sieving filter cartridge 6, which leads to a decrease in the sieving effect or even the inability to continue sieving powder. This reduces the frequency of powder clogging in the sieving filter cartridge 6.

[0026] The collection box 2 includes an exhaust port 7, and an air intake pipe 8 is provided at the output end of the exhaust port 7. A transparent pipe 17 is provided between the exhaust port 7 and the air intake pipe 8. The two ends of the transparent pipe 17 are respectively connected to the input ends of the exhaust port 7 and the air intake pipe 8. A filter screen 18 for filtering powder is installed inside the transparent pipe 17. An air pump 9 for delivering nitrogen gas in the collection box 2 to the air flow chamber 52 is installed at the output end of the air intake pipe 8. The air pump 9 is installed on the top outer wall of the collection box 2. The collection box 2 includes an air delivery pipe 10 that communicates with the air flow chamber 52. The air delivery pipe 10 is connected to the output end of the air pump 9.

[0027] During the powder collection process, after nitrogen is supplied to the air blower 5 for a period of time, the one-way valve 102 on the branch pipe 101 is closed, and the nitrogen gas entering the collection box 2 impacts the powder to agitate it for sieving. Excess nitrogen gas in the collection box 2 is discharged through the exhaust port 7 to maintain stable air pressure in the collection box 2. After passing through the exhaust port 7, the nitrogen gas passes through the transparent tube 17 and the air intake pipe 8 in sequence under the action of the air pump 9. The powder carried in the nitrogen gas is filtered through the filter screen 18 in the transparent tube 17 and enters the air intake pipe 8. Under the action of the air pump 9, it is transported through the air delivery pipe 10 to the airflow chamber 52 of the air blower 5 for recycling. This facilitates continuous agitation of the powder, further reduces the frequency of powder clogging the filter holes 61, improves the sieving effect, and at the same time, the nitrogen gas is recycled, reducing the cost of nitrogen use and making it highly practical.

[0028] The collection box 2 has an installation hole 11 that is movably connected to the screening filter cylinder 6. A first retaining ring 12 is installed at the opening of the screening filter cylinder 6. The outer diameter of the first retaining ring 12 is larger than the diameter of the installation hole 11. A first screw hole 121 is opened on the first retaining ring 12. A second retaining ring 13 corresponding to the first retaining ring 12 is installed at the bottom of the air blower 5. A second screw hole 131 corresponding to the first screw hole 121 is opened on the second retaining ring 13. A third screw hole 14 corresponding to the first screw hole 121 is opened on the collection box 2. The first screw hole 121, the second screw hole 131 and the third screw hole 14 are bolted together. A flexible hose 15 is installed at the output end of the guide pipe 3. The flexible hose 15 is inserted into the air blower 5 and corresponds to the pre-storage chamber 51. An L-shaped support rod 16 is provided on the air blower 5. One end of the support rod 16 is fixedly connected to the air blower 5, and the other end of the support rod 16 is rotatably connected to the collection box 2 through a rolling bearing.

[0029] The screening filter cartridge 6 is movably connected to the mounting hole 11 on the collection box 2. The outer diameter of the first retaining ring 12 is larger than the diameter of the mounting hole 11 to prevent the screening filter cartridge 6 from falling out of the mounting hole 11. The first screw hole 121 on the first retaining ring 12, the second screw hole 131 on the second retaining ring 13, and the third screw hole 14 on the collection box 2 are connected by bolts, achieving a stable connection between the screening filter cartridge 6, the air blower 5, and the collection box 2. When disassembling the screening filter cartridge 6, simply unscrew the bolts to easily separate the screening filter cartridge 6 from the air blower 5 and the collection box 2. Then, remove the hose 15 from the air blower 5 and rotate the support rod 16 to move the air blower 5 away from above the screening filter cartridge 6. This allows the screening filter cartridge 6 to be easily removed from the collection box 2 through the mounting hole 11 for cleaning, facilitating convenient disassembly and regular cleaning for subsequent use.

[0030] When collecting other types of powder, remove the sieve filter 6 for cleaning, rotate the support rod 16 to rotate the air blower 5 to correspond with the mounting hole 11, open the valve 53 on the air blower 5, and directly introduce clean water from the opening of the pre-storage chamber 51 of the air blower 5 to clean the powder residue inside the air blower 5 and the inner wall of the collection box 2. The cleaning water is discharged from the outlet, which facilitates the cleaning of the inner wall of the collection box 2 when it is used to collect other types of powder, and avoids the problem of powder mixing.

[0031] An elastic rubber ring 151 is installed around the output end of the hose 15. The rubber ring is press-fitted with the inner wall of the top of the pre-storage chamber 51. The elastic rubber ring 151 installed at the output end of the hose 15 serves as a seal to prevent powder from escaping from the gap between the hose 15 and the pre-storage chamber 51, while allowing the liquid nitrogen gas to flow out.

[0032] The exhaust port 7 is located on the upper part of the collection box 2. The high-position design of the exhaust port 7 prevents the nitrogen gas flow entering the collection box 2 from stirring up the powder settled inside the collection box 2. The inlet opening of the exhaust port 7 is set facing the top of the collection box 2, so that the powder carried by the nitrogen gas flow can settle due to gravity. Excess nitrogen gas in the collection box 2 enters the transparent tube 17, reducing the amount of powder entering the transparent tube 17.

[0033] Both ends of the transparent tube 17 are fitted with screw tubes 19, and the inlet end of the air intake tube 8 is also fitted with a screw tube 19. The air intake tube 8 is a silicone tube, and the inner wall of the exhaust port 7 is threaded. The screw tube 19 at one end of the transparent tube 17 is threadedly connected to the exhaust port 7. A threaded sleeve 20 is provided between the air intake tube 8 and the transparent tube 17. The screw tube 19 at the other end of the transparent tube 17 and the screw tube 19 at the inlet end of the air intake tube 8 are respectively threadedly connected to both ends of the threaded sleeve 20. This allows for the disassembly and connection of the transparent tube 17 to the exhaust port 7 and the air intake tube, facilitating the removal of the transparent tube 17 for cleaning the filter screen 18 inside the transparent tube 17 for subsequent use, while also ensuring the sealing of the connection points of the transparent tube 17.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powder collection device for nickel-titanium pre-alloy powder processing, comprising a mounting frame (1), a collection box (2), and a nitrogen cylinder, wherein the collection box (2) is fixed on the mounting frame (1), the top of the collection box (2) includes a guide pipe (3) for facilitating powder entry into the collection box (2), and the bottom of the collection box (2) includes a discharge pipe (4) for facilitating powder discharge from the collection box (2), and a cap (41) is threaded onto the discharge pipe (4), characterized in that, The collection box (2) is equipped with an air blowing cylinder (5) detachably connected to the guide pipe (3) and a screening filter cylinder (6) detachably connected to the air blowing cylinder (5). The screening filter cylinder (6) is placed inside the collection box (2). The two ends of the air blowing cylinder (5) are respectively connected to the guide pipe (3) and the screening filter cylinder (6). The air blowing cylinder (5) includes a pre-storage chamber (51) corresponding to the guide pipe (3), an airflow chamber (52) corresponding to the screening filter cylinder (6), and a valve (53) for controlling the connection or closure of the pre-storage chamber (51) and the airflow chamber (52). The collection box (2) includes an exhaust port (7), the output end of which is connected to an air intake pipe (8). An air pump (9) for delivering nitrogen gas from the collection box (2) to the air flow chamber (52) is installed at the output end of the air intake pipe (8). The air pump (9) is installed on the top outer wall of the collection box (2). The collection box (2) includes an air delivery pipe (10) connected to the air flow chamber (52). The air delivery pipe (10) is connected to the output end of the air pump (9) and to the outlet end of the nitrogen cylinder. The sieving filter cylinder (6) includes several filter holes (61) to facilitate the sieving of powder. The diameter of the filter holes (61) decreases from the inside to the outside along the wall thickness of the sieving filter cylinder (6).

2. The powder collection device for nickel-titanium pre-alloy powder processing according to claim 1, characterized in that, The collection box (2) has an installation hole (11) that is movably connected to the screening filter cylinder (6). A first retaining ring (12) is installed at the opening of the screening filter cylinder (6). The outer diameter of the first retaining ring (12) is larger than the diameter of the installation hole (11). A first screw hole (121) is opened on the first retaining ring (12). A second retaining ring (13) corresponding to the first retaining ring (12) is installed on the air blower (5). A second screw hole (131) corresponding to the first screw hole (121) is opened on the second retaining ring (13). A third screw hole (14) corresponding to the first screw hole (121) is opened on the collection box (2). The first screw hole (121), the second screw hole (131) and the third screw hole (14) are bolted together.

3. The powder collection device for nickel-titanium pre-alloy powder processing according to claim 2, characterized in that, The output end of the feed pipe (3) is equipped with a hose (15), which is inserted into the air blower (5) and corresponds to the pre-storage chamber (51).

4. The powder collection device for nickel-titanium pre-alloy powder processing according to claim 3, characterized in that, The output end of the hose (15) is equipped with an elastic rubber ring (151) that surrounds the hose (15), and the rubber ring is interference-fitted with the inner wall of the top of the pre-storage chamber (51).

5. A powder collection device for nickel-titanium pre-alloy powder processing according to claim 4, characterized in that, The air blower (5) is provided with an L-shaped support rod (16). One end of the support rod (16) is fixedly connected to the air blower (5), and the other end of the support rod (16) is rotatably connected to the collection box (2) through a rolling bearing.

6. A powder collection device for nickel-titanium pre-alloy powder processing according to claim 5, characterized in that, The exhaust port (7) is connected to a transparent tube (17) that is connected to the air intake pipe (8). A filter screen (18) for filtering powder is installed inside the transparent tube (17). A branch pipe (101) is connected to the air supply pipe (10). A one-way valve (102) is installed on the branch pipe (101). The branch pipe (101) is connected to the outlet end of the nitrogen cylinder.

7. A powder collection device for nickel-titanium pre-alloy powder processing according to claim 6, characterized in that, The exhaust port (7) is located on the upper part of the collection box (2), and the inlet opening of the exhaust port (7) faces the top of the collection box (2).

8. A powder collection device for nickel-titanium pre-alloy powder processing according to claim 7, characterized in that, Both ends of the transparent tube (17) are equipped with screw tubes (19), and the input end of the air intake tube (8) is also equipped with a screw tube (19). The inner wall of the exhaust port (7) is threaded. The screw tube (19) at one end of the transparent tube (17) is threadedly connected to the exhaust port (7). A threaded sleeve (20) is provided between the air intake tube (8) and the transparent tube (17). The screw tube (19) at the other end of the transparent tube (17) and the screw tube (19) at the input end of the air intake tube (8) are respectively threadedly connected to both ends of the threaded sleeve (20).

9. A powder collection device for nickel-titanium pre-alloy powder processing according to claim 8, characterized in that, The air blower (5) is hourglass shaped.

10. A powder collection device for nickel-titanium pre-alloy powder processing according to claim 9, characterized in that, The bottom of the collection box (2) is inclined, and the bottom of the collection box (2) is inclined toward the discharge pipe (4).

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