Titanium powder processing apparatus and method

Abstract

The application relates to a titanium powder processing equipment and a processing method, and relates to the technical field of titanium powder preparation. The equipment comprises a feeding device for feeding titanium rods, an induction melting device connected to the feeding device and used for melting the titanium rods fed by the feeding device to generate titanium liquid, an atomization and cooling device connected to the induction melting device and used for atomizing and cooling the titanium liquid melted by the induction melting device to generate titanium powder, a gas supply system used for supplying argon to isolate the titanium rods from air and used for supplying high-speed argon to the atomization and cooling device to blow and atomize the titanium liquid, and a solid-gas separation device connected to the atomization and cooling device and used for separating the titanium powder from the argon and collecting the titanium powder. The application can make the titanium liquid drops formed by melting the titanium rods have higher purity in the titanium powder processing process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of titanium powder preparation, and in particular to a titanium powder processing device and processing method. BACKGROUND

[0002] The titanium powder processing device is a special device for producing and processing titanium metal powder. It is widely used in the fields of aerospace, medical implants, and chemical catalysts. The preparation of titanium powder requires high purity, controllable particle size distribution, and specific morphology, which has high requirements for the processing device.

[0003] During the processing of titanium powder, titanium rods need to be melted first to form titanium droplets, and then the titanium droplets are broken into fine particles, and finally the fine particles are screened to obtain titanium powder. Since titanium metal reacts with air when heated, it is easy to oxidize to form an oxide with a higher melting point, making melting more difficult and the purity of the titanium droplets produced not high enough. SUMMARY

[0004] In order to make the titanium droplets formed by melting titanium rods have higher purity during the processing of titanium powder, the present application provides a titanium powder processing device and processing method.

[0005] In a first aspect, the present application provides a titanium powder processing device, which adopts the following technical solution:

[0006] A titanium powder processing device, comprising:

[0007] A feeding device for feeding titanium rods;

[0008] An induction melting device connected to the feeding device for melting the titanium rods fed by the feeding device to produce titanium liquid;

[0009] An atomization and cooling device connected to the induction melting device for atomizing and cooling the titanium liquid produced by the induction melting device to produce titanium powder;

[0010] A gas supply system for providing argon gas to isolate the titanium rods from air, and for supplying high-speed argon gas to the atomization and cooling device to blow and atomize the titanium liquid;

[0011] A solid-gas separation device connected to the atomization and cooling device for separating the titanium powder from the argon gas and collecting the titanium powder;

[0012] The gas supply system includes a gas pump, a first gas pipeline, a second gas pipeline, and a gas return pipeline; the first gas pipeline connects the gas pump and the atomization and cooling device; the second gas pipeline connects the gas pump and the induction melting device; and the gas return pipeline connects the gas pump and the solid-gas separation device for recycling the separated argon gas.

[0013] By adopting the technical scheme, before the titanium powder is processed, the gas pump can input the argon into the induction melting device through the second gas pipeline to fill the entire titanium powder processing equipment, so that the titanium rod can be wrapped by the argon during processing. Since the argon is an inert gas, the titanium rod is not easy to oxidize when heated after being wrapped by the argon; and the argon can be recycled through the gas return pipeline after use and separation from the titanium powder, so that the argon is not easy to be wasted and can be reused.

[0014] Optionally, the feeding device comprises a feeding column, a feeding rod assembly vertically sliding and rotatably installed in the feeding column, and a clamping piece installed at the bottom of the feeding rod assembly and used for clamping the titanium rod; a feeding channel for the titanium rod to pass through is formed in the bottom of the inner cavity of the feeding column and extends to the induction melting device;

[0015] The feeding rod assembly is fixedly provided with a rotating blade; the gas return pipeline is connected with a gas suction unit, the gas suction unit communicates with the inner cavity of the feeding column, and the gas suction unit is used for blowing part of the argon in the gas return pipeline into the inner cavity of the feeding column to drive the rotating blade to rotate.

[0016] By adopting the technical scheme, the titanium rod needs to be rotated when heated in the induction melting device. The recycled argon is introduced into the feeding column as a power source, the argon flows from top to bottom in the feeding column, and the rotating blade is driven to rotate in the flowing process, so that the titanium rod is driven to rotate, and the titanium rod can be uniformly heated and melted. In the conventional technology, a motor is arranged in the feeding column and driven by the motor. Compared with the conventional technology, since the titanium rod has high temperature when heated, the high temperature easily affects the motor, so the motor driving mode is cancelled in the present application, and the argon circulation process is used for driving.

[0017] Optionally, a gas filter plate is sleeved on the feeding rod assembly, and the gas filter plate has narrow gas holes only for the argon to pass through; after the feeding rod assembly sends the titanium powder into the induction melting device, the gas filter plate abuts against the bottom surface of the feeding column and covers the feeding channel.

[0018] By adopting the technical scheme, there may be part of titanium powder particles in the recycled argon. In the process that the argon enters the induction melting device from the feeding device, the argon can be filtered by the gas filter plate, so that the argon is more pure; when the titanium rod completely enters the induction melting device, the gas filter plate can cover the feeding channel, and the argon will produce a howling sound when passing through the narrow gas holes. The operator can directly judge whether the titanium rod has entered the induction melting device through the howling sound; and the frequency of the howling sound is related to the flow rate of the argon, and the change of the frequency of the howling sound can be distinguished to judge whether the rotation process of the titanium rod is normal.

[0019] Optionally, the induction melting device comprises a melting cavity, a side wall of the melting cavity is provided with an induction coil extending into an inner cavity of the melting cavity and used for melting the titanium bar, the induction coil is in a spiral shape; when the titanium bar extends into the melting cavity from the feeding device, the titanium bar is inserted into the induction coil.

[0020] Optionally, the atomization cooling device comprises an atomization cavity connected with the melting cavity and an atomizer; the atomization cavity has a reaction chamber for atomizing and cooling the titanium liquid, the reaction chamber is communicated with the melting cavity and the solid-gas separation device;

[0021] The atomizer is arranged at a connection between the reaction chamber and the melting cavity, and the atomizer comprises a receiving hopper for receiving the melted titanium liquid dripping down and a nozzle connected to a lower end of the receiving hopper;

[0022] The receiving hopper is opposite to a bottom of the titanium bar entering the melting cavity;

[0023] The first gas pipeline is communicated with the nozzle to spray the titanium liquid entering the nozzle to the reaction chamber by high-speed argon gas.

[0024] By adopting the above technical solution, the melted titanium liquid enters the nozzle through the receiving hopper, can be driven by the high-speed argon gas flow, and is sprayed to the reaction chamber; in the process of spraying to the reaction chamber, the titanium liquid can be scattered and atomized to form fine particles; and in the process of being sprayed to the reaction chamber by the high-speed argon gas, the fine particles can be quickly cooled.

[0025] Optionally, the nozzle has a gas collecting channel, a converging channel connected to the gas collecting channel, and a jetting channel connected to the converging channel;

[0026] An inner diameter of the gas collecting channel gradually decreases towards the converging channel, and an inner diameter of the jetting channel gradually increases away from the converging channel;

[0027] The first gas pipeline is communicated with the gas collecting channel, gas outlets of the first gas pipeline are distributed circumferentially on an inner wall of the gas collecting channel, and the gas outlets of the first gas pipeline are inclined towards the converging channel.

[0028] By adopting the above technical solution, since the inner diameter of the converging channel is smaller than the inner diameter of the gas collecting channel, the speed of the argon gas can be further increased in the process of the argon gas entering the converging channel from the gas collecting channel, so that the titanium liquid mixed in the argon gas can be scattered and atomized by the high-speed argon gas, thereby improving the atomization effect.

[0029] Optionally, the reaction chamber comprises a first chamber and a second chamber; the first chamber is in communication with the smelting cavity, the second chamber is in communication with the bottom of the first chamber, and the second chamber is in communication with the solid-gas separation device; the inner diameter of the second chamber is smaller than that of the first chamber; the connection between the first chamber and the smelting cavity and the connection between the second chamber and the first chamber are both provided with an expanding portion with gradually increasing inner diameter;

[0030] The gas supply system further comprises an accelerating pipeline, which is in communication with the first chamber and the second chamber, and the gas outlet of the accelerating pipeline is provided on the inner wall of the first chamber and the second chamber in a circumferential direction and is arranged to be inclined downward.

[0031] By adopting the above technical solution, since the inner diameter of the second chamber is smaller than that of the first chamber, the speed of the argon gas mixed with titanium powder can be increased when the argon gas enters the second chamber from the first chamber, so that the gas pressure in the second chamber is smaller than that in the first chamber, so that the titanium powder in the first chamber can be quickly sucked into the second chamber and is not easy to stay in the first chamber, and finally leaves the second chamber; and the argon gas is blown into the first chamber and the second chamber through the accelerating pipeline, which can assist the titanium powder to quickly pass through the reaction chamber; during the process of blowing the argon gas into the reaction chamber, the titanium powder carried by the argon gas may circulate upward and downward in the reaction chamber, thereby causing a part of the titanium powder to stay at the top of the first chamber or the second chamber; by providing the expanding portion, the space at the top of the first chamber and the second chamber is reduced, so that the titanium powder is not easy to stay.

[0032] Optionally, a solid-gas transmission pipeline is arranged between the reaction chamber and the solid-gas separation device, and the gas supply system further comprises a guide pipeline, one end of the guide pipeline is connected to the gas pump, and the other end of the guide pipeline is connected to the connection between the reaction chamber and the solid-gas transmission pipeline.

[0033] By adopting the above technical solution, when the guide pipeline blows gas into the solid-gas transmission pipeline, the flow of the gas in the solid-gas transmission pipeline can be accelerated, so that a negative pressure is generated therein, so that the titanium powder in the reaction chamber can be quickly sucked into the solid-gas transmission pipeline and transported to the solid-gas separation device for separation.

[0034] Optionally, the solid-gas separation device has a separation chamber, the inner diameter of the separation chamber gradually decreases from top to bottom; the upper end side wall of the separation chamber has a gas inlet in communication with the atomization and cooling device and used for allowing the gas containing titanium powder and argon to enter, the gas inlet is tangent to the inner wall of the separation chamber; the bottom of the separation chamber has a discharge outlet used for discharging pure titanium powder; and the top of the separation chamber has a gas return port used for recovering argon, the gas return port is in communication with the gas return pipeline.

[0035] In a second aspect, the present application provides a titanium powder processing method, which adopts the following technical scheme:

[0036] A titanium powder processing method applied to a titanium powder processing device, comprising:

[0037] Collecting an infrared image of the titanium rod;

[0038] Identifying and determining temperature distribution information of the lower end of the titanium rod according to the infrared image of the titanium rod;

[0039] When the temperature distribution information is inconsistent with the preset uniform distribution information, determining the high temperature point position and the low temperature point position according to the temperature distribution information;

[0040] Determining the rotation adjustment angle based on the high temperature point position and the low temperature point position;

[0041] Matching the uniform rotation speed of the titanium rod according to the driving blowing power, and determining the rotation time according to the uniform rotation speed and the rotation adjustment angle;

[0042] Replacing the preset reference ventilation power with the preset driving blowing power, and driving the titanium rod to rotate at the uniform rotation speed and the rotation time, so as to adjust the low temperature point position to the high temperature point position.

[0043] By adopting the above technical scheme, the suction unit blows air into the feeding column to drive the titanium rod to rotate, so that the bottom of the titanium rod can be uniformly melted, and the titanium rod can always drip into the receiving hopper after being melted into titanium liquid.

[0044] In summary, the present application has at least one of the following beneficial technical effects:

[0045] Before processing the titanium powder, the air pump can input argon into the induction melting device through the second gas pipeline to fully fill the entire titanium powder processing device, so that the titanium rod can be wrapped in argon during processing. Since argon is an inert gas, the titanium powder is not easy to oxidize when heated after being wrapped in argon; and after use and separation from the titanium powder, the argon can be recycled through the gas return pipeline, so that the argon is not easy to be wasted and can be reused;

[0046] The titanium rod needs to be rotated when heated in the induction melting device. The recycled argon is introduced into the feeding column as a power source, and the argon flows from top to bottom in the feeding column, which can drive the rotating blades to rotate and thus drive the titanium rod to rotate, so that the titanium rod can be uniformly heated and melted. In the conventional technology, a motor is arranged in the feeding column and driven by the motor. Compared with the conventional technology, since the titanium rod is heated at high temperature, the high temperature can easily affect the motor, so the motor driving mode is cancelled in the present application, and the force generated during the circulation of argon is used for driving;

[0047] There is still a part of titanium powder particles in the recycled argon, and the argon can be filtered by the filter plate in the process of entering the induction melting device from the feeding device, so that the argon is more pure; when the titanium rod completely enters the induction melting device, the filter plate can cover the feeding channel, and the argon passing through the narrow gas hole will produce a whistle sound. The operator can directly judge whether the titanium rod has entered the induction melting device through the whistle sound; and the frequency of the whistle sound is related to the flow rate of the argon, and by distinguishing the frequency change of the whistle sound, whether the rotation process of the titanium rod is normal can be judged. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a whole structure schematic diagram of a titanium powder processing equipment according to an embodiment of the present application;

[0049] Figure 2 is a sectional view of a titanium powder processing equipment according to an embodiment of the present application;

[0050] Figure 3 is a structure schematic diagram of a feeding device according to an embodiment of the present application;

[0051] Figure 4 is a sectional view of an atomization cooling device according to an embodiment of the present application;

[0052] Figure 5 is Figure 4 is a local enlarged view of A in FIG. 1.

[0053] The names of the parts referred to by the numbers in the above drawings are as follows: 1, feeding device; 11, feeding column; 12, feeding rod assembly; 13, clamping piece; 14, rotating blade; 15, feeding door; 16, feeding channel; 17, air cylinder; 18, filter plate; 181, narrow gas hole; 2, induction melting device; 21, smelting cavity; 22, induction coil; 3, atomization cooling device; 31, atomization cavity; 311, reaction chamber; 3111, first chamber; 3112, second chamber; 3113, flared portion; 32, atomizer; 321, receiving hopper; 322, nozzle; 3221, gas collection channel; 3222, converging channel; 3223, jet channel; 33, solid-gas transmission pipeline; 4, solid-gas separation device; 41, separation chamber; 42, air inlet; 43, discharge outlet; 44, back gas outlet; 5, gas supply system; 51, gas pump; 52, first gas pipeline; 53, second gas pipeline; 54, back gas pipeline; 55, acceleration pipeline; 56, guide pipeline; 57, air suction unit. DETAILED DESCRIPTION

[0054] The application will be further described in detail below with reference to the drawings and embodiments.

[0055] The embodiments of the present application disclose a titanium powder processing equipment.

[0056] Referring to Figure 1 A titanium powder processing equipment includes a feeding device 1, an induction melting device 2, an atomization cooling device 3, a solid-gas separation device 4 and a gas supply system 5. The induction melting device 2 is connected to the feeding device 1, the atomization cooling device 3 is connected to the induction melting device 2, and the solid-gas separation device 4 is connected to the atomization cooling device 3. The induction melting device 2 is used for melting titanium rods to form titanium liquid. The feeding device 1 is used for clamping and feeding titanium rods to the induction melting device 2. The atomization cooling device 3 is used for atomizing and cooling the melted titanium liquid into fine particles. The gas supply system 5 is used for providing argon gas to the entire titanium powder processing equipment, isolating titanium metal from air through argon gas, and blowing titanium liquid into atomization through argon gas. The solid-gas separation device 4 is used for separating and extracting titanium fine particles mixed in argon gas.

[0057] Referring to Figure 1 and Figure 2 Since titanium metal is easy to oxidize when heated, the titanium powder processing equipment always introduces argon gas during processing, which is provided by the gas supply system 5. The gas supply system 5 includes a gas pump 51, a first gas pipeline 52, a second gas pipeline 53, a gas return pipeline 54, an acceleration pipeline 55, a guide pipeline 56 and a gas suction unit 57.

[0058] The gas pump 51 is connected with an external high-pressure gas cylinder, and can pump argon gas into the titanium powder processing equipment through the gas pump 51. The first gas pipeline 52, the second gas pipeline 53, the gas return pipeline 54, the acceleration pipeline 55 and the guide pipeline 56 are all directly connected with the gas pump 51. Among them, the other ends of the first gas pipeline 52, the acceleration pipeline 55 and the guide pipeline 56 are all connected with the atomization cooling device 3. The other end of the second gas pipeline 53 is connected with the induction melting device 2, and the induction melting device 2 is supplied with gas through the second gas pipeline 53. The other end of the gas return pipeline 54 is connected with the solid-gas separation device 4, which is used to recycle the argon gas separated by the solid-gas separation device 4 to the gas pump 51, and then input into the titanium powder processing equipment through the gas pump 51. The gas suction unit 57 is arranged on the gas return pipeline 54, and the gas return pipeline 54 is connected with the feeding device 1, which is used to input part of the argon gas in the gas return pipeline 54 into the feeding device 1 as a feeding power source of the feeding device 1.

[0059] Referring to Figure 1 and Figure 3 The feeding device 1 includes a feeding column 11, a feeding rod assembly 12, a clamping piece 13 and a rotating blade 14. The feeding column 11 is a hollow square column with an open side, and a feeding door 15 is rotatably arranged on the open side of the feeding column 11, which can cover and seal the opening of the feeding column 11. By opening the feeding door 15, the titanium rod can be installed into the feeding column 11. A feeding channel 16 is formed at the bottom of the feeding column 11, which penetrates to the induction melting device 2.

[0060] The feeding rod assembly 12 is vertically slidingly installed in the feeding column 11, and the feeding rod assembly 12 can rotate along its central axis in the feeding column 11. The outer top of the feeding column 11 is provided with a cylinder 17, the push rod of the cylinder 17 extends into the inside of the feeding column 11, and the feeding rod assembly 12 vertically ascends and descends under the drive of the cylinder 17. The rotating blade 14 is fixedly installed on the feeding rod assembly 12, the suction unit 57 can blow the argon in the return gas pipeline 54 into the inside of the feeding column 11, and the argon can drive the rotating blade 14 to rotate when flowing from top to bottom in the feeding column 11, so as to drive the feeding rod assembly 12 to rotate. The clamping piece 13 is connected to the bottom of the feeding rod assembly 12, and the titanium rod is installed and fixed through the clamping piece 13.

[0061] When the titanium rod is installed into the feeding column 11 and clamped through the clamping piece 13, the cylinder 17 drives the titanium rod to move downward through the feeding rod assembly 12 and enters the induction melting device 2 from the feeding channel 16, and then the rotating blade 14 is driven to rotate by the argon, so that the titanium rod can slowly rotate in the induction melting device 2.

[0062] Further, the feeding rod assembly 12 is sleeved with a gas filter plate 18, and the gas filter plate 18 is arrayed with narrow gas holes 181 only for argon to pass through. When the feeding rod assembly 12 moves downward and sends the titanium rod into the induction melting device 2, the gas filter plate 18 also moves downward and finally abuts against the inner bottom surface of the feeding column 11, so as to cover the feeding channel 16. At this time, if the feeding rod assembly 12 continues to move downward, the relative sliding between the gas filter plate 18 and the feeding rod assembly 12 occurs.

[0063] Referring to Figure 1 and Figure 2 , the induction melting device 2 includes a melting cavity 21 and an induction coil 22. The melting cavity 21 is a hollow sphere, and the inside is used for heating and melting the titanium rod. The induction coil 22 is inserted from one side of the melting cavity 21, and the induction coil 22 is in a spiral shape. When the titanium rod enters the melting cavity 21 from the feeding channel 16, the titanium rod can be inserted into the center of the induction coil 22. When the induction coil 22 is powered on, the titanium rod can generate high temperature as an electrode, so as to be melted.

[0064] The second gas pipeline 53 of the gas supply system 5 is communicated with the inner cavity of the melting cavity 21, and before the titanium rod is heated and melted, the argon is introduced into the melting cavity 21 through the second gas pipeline 53, so as to discharge the air in the melting cavity 21. The argon can wrap the titanium rod, so that the surface of the titanium rod is not easy to be oxidized when heated.

[0065] Referring to Figure 2 and Figure 4 , the atomization cooling device 3 includes an atomization cavity 31 and an atomizer 32.

[0066] The atomization cavity 31 is provided with a reaction chamber 311 from top to bottom, which is used for atomizing and cooling the titanium liquid. The reaction chamber 311 includes a first chamber 3111 and a second chamber 3112, which are in communication with each other, and the first chamber 3111 is located above the second chamber 3112. The top of the first chamber 3111 is in communication with the smelting cavity 21, and the bottom of the second chamber 3112 is in communication with the solid-gas separation device 4. When the titanium liquid drops, it successively passes through the first chamber 3111 and the second chamber 3112, and then enters the solid-gas separation device 4.

[0067] Referring to Figure 4 and Figure 5 The atomizer 32 is arranged at the connection between the first chamber 3111 and the smelting cavity 21, and includes a receiving hopper 321 and a nozzle 322. The receiving hopper 321 is conical, which is used for receiving the molten titanium liquid, and is opposite to the bottom of the titanium rod entering the smelting cavity 21. The nozzle 322 has a gas collecting channel 3221, a converging channel 3222 and a jet channel 3223 from top to bottom, the upper end of the gas collecting channel 3221 is in communication with the receiving hopper 321, the lower end of the gas collecting channel 3221 is in communication with the converging channel 3222, and the lower end of the converging channel 3222 is in communication with the jet channel 3223.

[0068] In this embodiment, the gas collecting channel 3221 and the jet channel 3223 are both conical, the inner diameter of the gas collecting channel 3221 gradually decreases towards the converging channel 3222, and the inner diameter of the jet channel 3223 gradually increases away from the converging channel 3222.

[0069] The first gas conveying pipeline 52 of the gas supply system 5 is in communication with the gas collecting channel 3221 of the nozzle 322. The gas outlets of the first gas conveying pipeline 52 are distributed circumferentially on the inner wall of the gas collecting channel 3221, and are all inclined towards the converging channel 3222. When the argon gas enters the gas collecting channel 3221 through the first gas conveying pipeline 52, the argon gas can be accelerated when entering the converging channel 3222 due to the smaller inner diameter of the converging channel 3222 than that of the gas collecting channel 3221, and is sprayed at the jet channel 3223.

[0070] When the titanium rod is melted into titanium liquid in the smelting cavity 21, the titanium liquid can drop downwards into the receiving hopper 321 and enter the gas collecting channel 3221. Due to the flowing argon gas in the gas collecting channel 3221, the titanium liquid can be carried away by the argon gas and sprayed out from the jet channel 3223 through the high-speed argon gas. The titanium liquid can be atomized at the moment of spraying and cooled during the process of floating with the argon gas in the reaction chamber 311, thereby forming fine particles of titanium powder.

[0071] Referring to Figure 2 and Figure 4In the embodiment, the inner diameter of the second chamber 3112 is smaller than that of the first chamber 3111, and when the argon mixed with titanium powder enters the second chamber 3112 from the first chamber 3111, the speed can be increased, so that the gas pressure in the second chamber 3112 is smaller than that in the first chamber 3111, so that the titanium powder in the first chamber 3111 can be quickly sucked into the second chamber 3112, and is not easy to stay in the first chamber 3111, and finally leaves from the second chamber 3112.

[0072] Further, the connection between the first chamber 3111 and the smelting cavity 21 and the connection between the second chamber 3112 and the first chamber 3111 are both provided with a flared portion 3113 with gradually increasing inner diameter, so that the top space of the first chamber 3111 and the second chamber 3112 is reduced, and the titanium powder carried by the argon in the reaction chamber 311 is not easy to stay in the top of the first chamber 3111 or the second chamber 3112.

[0073] The acceleration pipeline 55 is in communication with the first chamber 3111 and the second chamber 3112, and the gas outlet of the acceleration pipeline 55 is circumferentially provided on the inner wall of the first chamber 3111 and the second chamber 3112 and is inclined downward. When the air pump 51 blows argon into the reaction chamber 311 through the acceleration channel, the blown argon can promote the argon circulating in the reaction chamber 311 to quickly pass through the first chamber 3111 and the second chamber 3112 in turn.

[0074] The bottom outlet of the second chamber 3112 is connected with the solid-gas transmission pipeline 33, and the argon and titanium powder in the second chamber 3112 can enter the solid-gas separation device 4 along the solid-gas transmission pipeline 33. The guide pipeline 56 of the gas supply system 5 is connected at the connection between the second chamber 3112 and the solid-gas transmission pipeline 33, and the air pump 51 inputs argon into the solid-gas transmission pipeline 33 through the guide pipeline 56, so that the gas flow rate in the solid-gas transmission pipeline 33 is increased, thereby forming a negative pressure, so that the argon and titanium powder in the second chamber 3112 can be quickly sucked into the solid-gas transmission pipeline 33.

[0075] Referring to Figure 2 The solid-gas separation device 4 is a hollow conical cylinder, which has a separation chamber 41 with a gradually decreasing inner diameter from top to bottom. The gas inlet 42 connected with the solid-gas transmission pipeline 33 is located on the upper end side wall of the separation chamber 41, and the gas inlet 42 is tangent to the inner wall of the separation chamber 41. The bottom of the separation chamber 41 is provided with a discharge outlet 43 for discharging pure titanium powder. The top of the separation chamber 41 is provided with a gas return port 44 for recovering argon, and the gas return pipeline 54 of the gas supply system 5 is connected with the gas return port 44.

[0076] When the argon gas mixed with titanium powder enters the separation chamber 41 from the gas inlet 42, the gas flow can flow downward along the inner wall of the separation chamber 41 in a spiral manner, the argon gas can flow upward along the central axis at the bottom of the separation chamber 41 and be discharged from the gas outlet 44, and the titanium powder is thrown on the inner wall of the separation chamber 41 due to the centrifugal force during the spiral downward flow along the inner wall of the separation chamber 41, and then falls downward and exits from the discharge port 43.

[0077] Based on the same inventive concept, the titanium powder processing method is disclosed.

[0078] A titanium powder processing method comprises the following steps:

[0079] Step S100: Collecting a titanium bar infrared image.

[0080] The titanium bar infrared image refers to an image of the titanium bar being smelted obtained by photographing the titanium bar through an infrared camera. Different colors appear on the surface of the titanium bar in the image, and different colors represent different temperatures. The smelting cavity 21 is provided with an observation window, and the infrared camera is arranged on the observation window to avoid high-temperature corrosion.

[0081] Step S101: Identifying and determining temperature distribution information of the lower end of the titanium bar according to the titanium bar infrared image.

[0082] The temperature distribution information refers to the temperature distribution of the surface of one circle around the lower end of the titanium bar. The temperature distribution information can be obtained by identifying the lower end of the titanium bar from the titanium bar infrared image.

[0083] Step S102: When the temperature distribution information is inconsistent with the preset uniform distribution information, determining the temperature high point position and the temperature low point position according to the temperature distribution information.

[0084] The uniform distribution information refers to the fact that the surface temperature of one circle around the lower end of the titanium bar is the same, so that the lower end of the titanium bar can be uniformly melted.

[0085] If the temperature distribution information and the uniform distribution information are consistent, it means that there is no abnormal situation in the melting process of the titanium bar. If they are inconsistent, it means that the lower end of the titanium bar is not uniformly melted. At this time, the position of titanium liquid dripping from the bottom of the titanium bar will change, and it cannot directly drip into the receiving hopper 321, and the center of gravity of the titanium bar will change, which needs to be corrected.

[0086] The temperature high point position refers to the position of the highest temperature on the surface of the titanium bar. Correspondingly, the temperature low point position refers to the position of the lowest temperature on the surface of the titanium bar. When the inductive coil heats the titanium bar, the temperature at the temperature high point position is always higher than that at the temperature low point position. By gradually rotating the temperature low point position of the titanium bar to the temperature high point position, the titanium bar can be uniformly heated as a whole.

[0087] Step S103: determining the rotation adjustment angle based on the temperature high point position and the temperature low point position.

[0088] The rotation adjustment angle refers to the angle that the temperature low point position of the titanium rod needs to rotate to the temperature high point position. When the temperature high point position and the temperature low point position are determined from the temperature distribution information, the angle between the two can be directly determined.

[0089] Step S104: matching the uniform rotation speed of the titanium rod with the preset driving blowing power, and determining the rotation time according to the uniform rotation speed and the rotation adjustment angle.

[0090] In this embodiment, the gas suction unit 57 introduces argon into the feeding column 11, and the flowing argon drives the titanium rod to rotate. The driving blowing power refers to the operating power of the gas suction unit 57 when the flowing argon can drive the titanium rod to rotate.

[0091] The uniform rotation speed refers to the rotation speed of the titanium rod under the driving of the argon. The uniform rotation speed is proportional to the driving blowing power, and the greater the driving blowing power, the greater the uniform rotation speed.

[0092] The rotation time refers to the time required for the titanium rod to rotate the temperature low point position to the temperature high point position at the uniform rotation speed. The rotation time can be directly calculated by the uniform rotation speed and the rotation adjustment angle.

[0093] Step S105: replacing the preset reference ventilation power with the driving blowing power, and driving the titanium rod to rotate at the uniform rotation speed and the rotation time, so as to adjust the temperature low point position to the temperature high point position.

[0094] The reference ventilation power refers to the argon introduced into the feeding column 11 by the gas suction unit 57, but at this time the argon wind is not enough to drive the titanium rod to rotate, and the argon only flows in the equipment.

[0095] When the titanium rod needs to be driven to rotate, the reference ventilation power of the gas suction unit 57 is corrected to the driving blowing power, and the gas suction unit 57 is controlled by the driving blowing power. At this time, the titanium rod can rotate at the uniform rotation speed, and after the rotation time, the temperature low point position of the titanium rod is adjusted to the temperature high point position, and at this time the inductance coil can heat the temperature low point position of the titanium rod.

[0096] The processing method of the titanium liquid generated by the melting of the titanium rod and unable to directly drop into the receiving hopper 321 includes the following steps:

[0097] In this embodiment, the gas outlets of the second gas conveying pipeline 53 are evenly arranged on the inner wall of the smelting cavity 21, and the gas outlets are provided with blowing heads, and each blowing head can be controlled independently, and the blowing angle thereof can also be adjusted.

[0098] Step S200: collect the image of the inner cavity of the smelting cavity.

[0099] The image of the inner cavity of the smelting cavity refers to an image obtained by photographing the inside of the smelting cavity 21 by a camera, and the image contains the feature of the titanium rod. The camera is arranged on the observation window to avoid high-temperature erosion of the camera.

[0100] Step S201: determine the titanium rod bottom dripping position based on the image of the inner cavity of the smelting cavity.

[0101] After the titanium rod is melted, a tip is formed at the bottom of the titanium rod, and the titanium liquid flows downward and converges at the tip and drips. The titanium rod bottom dripping position refers to the position of the tip at the bottom of the titanium rod in the image. The titanium rod bottom dripping position can be directly obtained by image recognition of the titanium rod from the image of the inner cavity of the smelting cavity.

[0102] Step S202: determine the dripping height difference, horizontal offset distance and offset orientation based on the titanium rod bottom dripping position and the preset receiving hopper position.

[0103] The receiving hopper position refers to the position of the receiving hopper 321 at the bottom of the smelting cavity 21 in the image.

[0104] The dripping height difference refers to the height difference between the titanium rod bottom dripping position and the receiving hopper position. The dripping height difference can be obtained by image recognition analysis from the image of the inner cavity of the smelting cavity.

[0105] The horizontal offset distance refers to the horizontal distance between the titanium rod bottom dripping position and the receiving hopper position. The horizontal offset distance can be obtained by image recognition analysis from the image of the inner cavity of the smelting cavity.

[0106] When the titanium rod is not uniformly melted, it can be tilted horizontally 360° in the smelting cavity 21, and the offset orientation refers to the tilting direction of the titanium rod in the smelting cavity 21. The offset orientation can be obtained by analyzing the overall posture of the titanium rod from the image of the inner cavity of the smelting cavity.

[0107] Step S203: match the preset air blowing head group corresponding to the offset orientation according to the offset orientation.

[0108] In this embodiment, air blowing is performed by the air blowing head, and the airflow can leave through the receiving hopper 321, thereby forming a tilted airflow in the smelting cavity 21, and the airflow can apply force to the dripping titanium liquid, so that the titanium liquid can be tilted along the airflow and drip into the receiving hopper 321. In order to produce the above effect, it is necessary to control a part of the air blowing head group in the smelting cavity 21, which is opposite to the offset orientation, and the air blowing head group is at the position of the offset orientation of the titanium rod.

[0109] Step S204: determine the correction air blowing power of the air blowing head group according to the dripping height difference and the horizontal offset distance.

[0110] The correction blowing power refers to the blowing power of the blowing head group when the argon gas flow can tilt the titanium liquid at the bottom of the titanium rod drop position to fall into the receiving hopper position. According to the drop height difference and the horizontal offset distance, the guiding force required to be applied to the titanium liquid when the titanium liquid drops can be determined, so that the argon gas flow can be determined, and finally the correction blowing power of the blowing head group can be determined.

[0111] Step S205: Control the blowing head group to blow at the correction blowing power to control the titanium liquid that drops to tilt from the bottom of the titanium rod drop position to fall into the receiving hopper position.

[0112] By controlling a part of the blowing head group in the smelting cavity 21 to blow at the correction blowing power, the gas flow that can tilt to flow into the receiving hopper 321 can be generated in the smelting cavity 21, and the titanium liquid that drops is guided by the gas flow, so that the titanium liquid can tilt to fall into the receiving hopper 321.

[0113] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions that belong to the idea of the present application shall be considered as the protection scope of the present application. It should be noted that for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application shall be considered as the protection scope of the present application.

Claims

1. A titanium powder processing apparatus, characterized by, The application relates to a titanium rod atomizing and cooling device, which comprises the following parts: a feeding device (1) for feeding titanium rods; an induction melting device (2) connected to the feeding device (1) for melting the titanium rods fed by the feeding device (1) to generate titanium liquid; an atomizing and cooling device (3) connected to the induction melting device (2) for atomizing and cooling the titanium liquid generated by the induction melting device (2) to generate titanium powder; an air supply system (5) for providing argon to isolate the titanium rods from air and for supplying high-speed argon to the atomizing and cooling device (3) to atomize and scatter the titanium liquid; a solid-gas separation device (4) connected to the atomizing and cooling device (3) for separating the titanium powder from argon and collecting the titanium powder; the air supply system (5) comprises an air pump (51), a first air conveying pipeline (52), a second air conveying pipeline (53) and a gas return pipeline (54); the first air conveying pipeline (52) is connected to the air pump (51) and the atomizing and cooling device (3); the second air conveying pipeline (53) is connected to the air pump (51) and the induction melting device (2); the gas return pipeline (54) is connected to the air pump (51) and the solid-gas separation device (4) for recycling separated argon; the feeding device (1) comprises a feeding column (11), a feeding rod assembly (12) vertically sliding and rotatingly arranged in the feeding column (11) and a clamping part (13) arranged at the bottom of the feeding rod assembly (12) and used for clamping the titanium rods; the inner cavity of the feeding column (11) is provided with a feeding channel (16) penetrating through the induction melting device (2) and used for allowing the titanium rods to pass through; a rotating blade (14) is fixedly arranged on the feeding rod assembly (12); an air suction unit (57) is connected to the gas return pipeline (54) and communicates with the inner cavity of the feeding column (11); the air suction unit (57) is used for blowing part of the argon in the gas return pipeline (54) into the inner cavity of the feeding column (11) to drive the rotating blade (14) to rotate; a gas filtering plate (18) is sleeved on the feeding rod assembly (12) and is provided with narrow air holes (181) only allowing argon to pass through; after the feeding rod assembly (12) sends the titanium powder into the induction melting device (2), the gas filtering plate (18) abuts against the bottom surface of the feeding column (11) and covers the feeding channel (16).

2. The titanium powder processing apparatus of claim 1, wherein the induction melting device (2) comprises a smelting cavity (21), the side wall of the smelting cavity (21) is provided with an induction coil (22) extending into the inner cavity of the smelting cavity (21) and used for smelting the titanium rods; the induction coil (22) is in a spiral shape; when the titanium rods extend into the smelting cavity (21) from the feeding device (1), the titanium rods are inserted into the induction coil (22).

3. The titanium powder processing apparatus of claim 2, wherein The atomization cooling device (3) comprises an atomization cavity (31) connected with the smelting cavity (21) and an atomizer (32); the atomization cavity (31) has a reaction chamber (311) for atomizing and cooling titanium liquid, and the reaction chamber (311) is communicated with the smelting cavity (21) and the solid-gas separation device (4); The atomizer (32) is arranged at the connection between the reaction chamber (311) and the smelting cavity (21), and the atomizer (32) comprises a receiving hopper (321) for receiving the titanium liquid dripping after being melted and a nozzle (322) connected with the lower end of the receiving hopper (321); The receiving hopper (321) is opposite to the bottom of the titanium rod entering the smelting cavity (21); The first gas conveying pipeline (52) is communicated with the nozzle (322) to spray the titanium liquid entering the nozzle (322) to the reaction chamber (311) by high-speed argon.

4. The titanium powder processing apparatus of claim 3, wherein The nozzle (322) has a gas collecting channel (3221), a converging channel (3222) connected with the gas collecting channel (3221) and a spraying channel (3223) connected with the converging channel (3222); The inner diameter of the gas collecting channel (3221) gradually decreases towards the converging channel (3222), and the inner diameter of the spraying channel (3223) gradually increases away from the converging channel (3222); The first gas conveying pipeline (52) is communicated with the gas collecting channel (3221), and the gas outlets of the first gas conveying pipeline (52) are distributed circumferentially on the inner wall of the gas collecting channel (3221), and the gas outlets of the first gas conveying pipeline (52) are inclined towards the converging channel (3222).

5. The titanium powder processing apparatus of claim 3, wherein The reaction chamber (311) comprises a first chamber (3111) and a second chamber (3112); the first chamber (3111) is communicated with the smelting cavity (21), the second chamber (3112) is communicated with the bottom of the first chamber (3111), and the second chamber (3112) is communicated with the solid-gas separation device (4); the inner diameter of the second chamber (3112) is smaller than that of the first chamber (3111); the connection between the first chamber (3111) and the smelting cavity (21) and the connection between the second chamber (3112) and the first chamber (3111) both have a flared portion (3113) with gradually increasing inner diameter; The gas supply system (5) further comprises an acceleration pipeline (55) communicated with the first chamber (3111) and the second chamber (3112), and the gas outlets of the acceleration pipeline (55) are circumferentially arranged on the inner wall of the first chamber (3111) and the second chamber (3112) and are inclined downward.

6. The titanium powder processing apparatus of claim 3, wherein The reaction chamber (311) and the solid-gas separation device (4) are provided with a solid-gas transmission pipeline (33), and the gas supply system (5) further comprises a guide pipeline (56), one end of the guide pipeline (56) is connected to the gas pump (51), and the other end is connected to the connection between the reaction chamber (311) and the solid-gas transmission pipeline (33).

7. The titanium powder processing apparatus of claim 1, wherein The solid-gas separation device (4) has a separation chamber (41), the inner diameter of the separation chamber (41) gradually decreases from top to bottom; the upper end side wall of the separation chamber (41) has a gas inlet (42) in communication with the atomization cooling device (3) and used for the gas containing titanium powder and argon to enter, the gas inlet (42) is tangent to the inner wall of the separation chamber (41); the bottom of the separation chamber (41) has a discharge port (43) for discharging pure titanium powder; the top of the separation chamber (41) has a gas return port (44) for recovering argon, and the gas return port (44) is in communication with the gas return pipeline (54).

8. A method of processing titanium powder, applied to a titanium powder processing apparatus according to any one of claims 1 to 7, characterized by, The method comprises: Collecting an infrared image of the titanium rod; Identifying and determining temperature distribution information of the lower end of the titanium rod according to the infrared image of the titanium rod; When the temperature distribution information is inconsistent with the preset uniform distribution information, determining the high temperature point position and the low temperature point position according to the temperature distribution information; Determining the rotation adjustment angle based on the high temperature point position and the low temperature point position; According to the preset driving blowing power, the uniform rotation speed of the titanium rod is matched, and the rotation time is determined according to the uniform rotation speed and the rotation adjustment angle; The driving blowing power is used to replace the preset reference ventilation power, and the titanium rod is driven to rotate at the uniform rotation speed and the rotation time, so as to adjust the low temperature point position to the high temperature point position.

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