Electrolytic method preparation device and process for high-conductivity superfine copper powder

Abstract

The invention discloses a high-conductivity superfine copper powder electrolytic method preparation device and process, and relates to the technical field of superfine copper powder preparation, the high-conductivity superfine copper powder electrolytic method preparation device comprises a separation assembly, the separation assembly comprises a separation chamber, and a screening assembly used for distinguishing copper powder of different particle sizes is arranged in the separation chamber. The conveying pump is controlled to be started, high-pressure and high-speed airflow enters the separation chamber through the air outlet pipe, the output direction of the airflow faces a copper powder pile, copper powder can be blown forwards to rise and fall on the surface of the material receiving plate, the light copper powder is brought into a fixing opening in the high position through the airflow, and therefore the light copper powder falls into a material receiving drawer below the corresponding position; and heavy copper powder settles and falls into the fixing opening at the lower position under the action of gravity and falls into the corresponding material receiving drawer, so that the copper powder with different loose ratios can be distinguished and collected, separation is more accurate, and the requirement that the copper powder with different loose ratios is used for different application scenes is met.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-fine copper powder preparation, and specifically to an electrolytic preparation device and process for high-conductivity ultra-fine copper powder. Background Technique

[0002] Ultra-fine copper powder refers to powder with particle sizes between 1 nanometer and 100 nanometers, also known as nano-copper powder. It has small-size effect, large specific surface area, and macroscopic quantum tunneling effect, thus showing many excellent properties. It can be used as petroleum lubricants and in industries such as medicine, electroplating, and coatings. High-conductivity ultra-fine copper powder is a material with higher conductivity based on ultra-fine copper powder to meet specific application scenarios with higher requirements for conductivity, such as in fields like electronic circuits and high-end electrode materials with extremely high requirements for conductivity.

[0003] In the prior art, when using the electrolytic method to prepare ultra-fine copper powder, the electrolyzed and dried copper powder will be screened to obtain fine copper powder. However, the vibration screening method can only perform preliminary separation to remove larger particles and impurities. At this time, the obtained copper powder is finer but has different tap densities. Copper powders with different tap densities have different application scenarios. When the copper powders with different tap densities that are not completely separated are mixed and applied, problems such as low performance and low stability will occur.

[0004] Therefore, we propose an electrolytic preparation device and process for high-conductivity ultra-fine copper powder to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of the present invention is to provide an electrolytic preparation device and process for high-conductivity ultra-fine copper powder to solve the problems of low performance and low stability that occur when the existing copper powders with different tap densities that are not completely separated are mixed and applied, as mentioned in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An electrolytic preparation device for high-conductivity ultra-fine copper powder, including a separation component. The separation component includes a separation chamber. Inside the separation chamber, a screening component is provided for distinguishing copper powders with different particle sizes. Outside the separation chamber, a transmission component is provided for transporting copper powder by air flow. The screening component includes a receiving plate. A plurality of fixing ports are opened at the top of the receiving plate. The inner wall of each fixing port is fixedly connected with a limiting mesh plate. The transmission component includes a Y-shaped feeding pipe. One end of the Y-shaped feeding pipe is fixedly communicated with a conveying pipe. One end of the conveying pipe is fixedly communicated with a feeding box. One end of the outer surface of the conveying pipe is fixedly communicated with an air inlet pipe. The bottom of the separation chamber is fixedly connected with a mounting plate. A conveying pump is arranged on the top of the mounting plate. The input end of the conveying pump is fixedly communicated with one end of the air inlet pipe. The output end of the conveying pump is fixedly communicated with an air outlet pipe.

[0007] Preferably, a controller is provided on the front surface of the separation chamber. Two support frames are fixedly connected to the bottom of the separation chamber. An installation opening is formed in the inner wall of one side of the separation chamber near the bottom. Two limiting grooves are symmetrically formed in the inner wall of one side of the separation chamber near the installation opening. A blanking opening is formed in the inner bottom surface of the separation chamber. The blanking box is fixedly installed at the bottom of the blanking opening.

[0008] Preferably, a plurality of sliding grooves are formed in the front and rear surfaces of the separation chamber near the opening. The lengths of the sliding grooves on the same side increase in sequence from top to bottom. A slider is slidably connected to the inner wall of each sliding groove. A receiving drawer is fixedly connected between the outer surfaces of every two symmetrically arranged sliders. The receiving drawer is used for collecting the separated copper powder. A sealing cover is fixedly connected to the outer surface of one side of each receiving drawer. Pulling grooves are formed at both edges of each sealing cover. The pulling grooves are used for pulling the sealing cover. The positions of each limiting mesh plate correspond to each receiving drawer respectively.

[0009] Preferably, the Y-shaped feed pipe is fixedly communicated with the top of the separation chamber. A flange is fixed to the other end of the Y-shaped feed pipe. The other end of the Y-shaped feed pipe is connected to the previous device. A first valve is arranged on the outer surface of the other end of the Y-shaped feed pipe. A second valve is arranged on the outer surface of the air inlet pipe near one end of the Y-shaped feed pipe.

[0010] Preferably, the air outlet pipe is fixedly communicated with one side of the installation opening. A partition mesh plate is fixedly connected to the inner wall of the air inlet pipe at the end connected to the Y-shaped feed pipe. The partition mesh plate is used for blocking the copper powder extracted through the air inlet pipe outside the air inlet pipe.

[0011] Preferably, an adjusting assembly is fixedly connected to the inner bottom surface of the separation chamber. The adjusting assembly includes a fixing rod. The fixing rod is fixedly connected between the front and rear walls of the separation chamber. An adjusting plate is rotatably connected to the outside of the fixing rod. The adjusting plate is used for carrying the copper powder to be separated. A folding plate is fixedly connected to the bottom of one side of the adjusting plate. The folding plate is fixedly connected to the inner bottom surface of the separation chamber.

[0012] Preferably, a fixing block is fixedly connected to the bottom of the adjusting plate. A fixing spring is arranged at the bottom of the fixing block. The bottom end of the fixing spring is fixedly connected to a touch plate. A pressure sensor is arranged on the inner bottom surface of the separation chamber. The touch plate corresponds to the position of the pressure sensor.

[0013] Preferably, a sliding frame is fixedly connected to the bottom of the adjusting plate near the fixed block. A guide rail is provided at the bottom of the sliding frame. An active block is slidably connected inside the sliding frame. A connecting rod is fixedly connected to the outer surface of the active block. The connecting rod is slidably connected to the inner wall of the guide rail. The bottom end of the connecting rod is provided with an electric push rod, and the electric push rod is arranged on the inner bottom surface of the separation chamber.

[0014] Preferably, two mounting grooves are symmetrically provided on the other side of the adjusting plate. Rotating blocks are fixedly connected to the inner walls of the two mounting grooves. A balancing plate is attached to the outside of the other side of the adjusting plate. Rotating holes are provided on both sides of the balancing plate. The outer surfaces of the two rotating holes are respectively rotatably connected to the outer surfaces of the two rotating blocks. A telescopic frame is slidably sleeved on the outside of the balancing plate. Two limiting blocks are fixedly connected to the outer surface of the telescopic frame. The outer surfaces of each limiting block are respectively slidably connected to the inner walls of each limiting groove.

[0015] A process for preparing high-conductivity ultrafine copper powder by electrolysis method, comprising the following steps: S1. By controlling the start of the delivery pump, high-pressure and high-speed air flow enters the separation chamber through the air outlet pipe. The output direction of this air flow is towards the copper powder pile, which will blow the copper powder forward. The blown copper powder falls on the surface of the receiving plate. Then, the lighter copper powder is carried by the air flow to the fixed opening at a higher position and thus falls into the receiving drawer below the corresponding position. The limiting mesh plate can prevent the agglomerated copper powder blocks from entering the receiving drawer through the fixed opening. The heavier copper powder sinks under the action of gravity and falls into the fixed opening at a lower position and then into the corresponding receiving drawer. Among them, after the collection work inside the receiving drawer is completed, the closing cover and the receiving drawer can be conveniently pulled out by means of the pulling groove. S2. By starting the delivery pump, the copper powder inside the feeding box is pumped into the delivery pipe again and then returns to the Y-shaped feeding pipe. After repeated separation, the first valve is opened, and the first valve can be closed after the delivery is completed. When using the air inlet pipe and the delivery pipe to pump and transport the copper powder, the second valve is opened, so that the air inlet pipe and the delivery pipe are connected, and then the air flow can transport the copper powder inside the feeding box. The copper powder inside the feeding box can be circulated and transported to the Y-shaped feeding pipe and then fall on the adjusting plate again. S3. By starting the electric push rod, the connecting rod is driven to move up and down. At this time, the active block will move inside the sliding frame, and then drive the adjusting plate to rotate. When there is less copper powder, the inclination of the adjusting plate should be large, which is more conducive to blowing the copper powder onto the receiving plate. When there is more copper powder, the inclination of the adjusting plate is made small. When changing the inclination of the adjusting plate, when the touch plate touches the pressure sensor, the pressure value of the pressure sensor increases, and the electric push rod is paused to prevent the inclination of the adjusting plate from being too large and directly pouring the copper powder it bears into the feeding box. S4. When the adjusting plate rotates around the fixed rod, the balance plate will slide telescopically inside the telescopic frame, and the limiting block will slide inside the limiting groove, which can prevent the copper powder from falling below the adjusting plate. By installing the rotating block inside the rotating hole, the balance plate and the adjusting plate are installed together.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. During use, by controlling the start of the delivery pump, high-pressure and high-speed air flow passes through the air outlet pipe and enters the separation chamber. The output direction of this air flow is towards the copper powder pile, and it will blow the copper powder forward and make it fall on the surface of the receiving plate. Then, the lighter copper powder is carried by the air flow to the fixed opening at a higher position and thus falls into the receiving drawer below the corresponding position. The heavier copper powder sinks under the action of gravity and falls into the fixed opening at a lower position and then into the corresponding receiving drawer. Therefore, copper powders with different bulk densities can be separated and collected, making the separation more accurate and meeting the requirements for different copper powders with different bulk densities to be used in different application scenarios. Among them, the copper powder that fails to pass through the fixed opening in time falls into the blanking box. At this time, the delivery pump is started, and the copper powder inside the blanking box is pumped into the delivery pipe again and then returns to the Y-shaped feed pipe for repeated separation. When the agglomerated copper powder is transported inside the delivery pipe, it can be dispersed.

[0017] 2. During use, after the delivery is completed by opening the first valve, the first valve can be closed. When using the air inlet pipe and the delivery pipe to pump and transport the copper powder, the second valve needs to be opened so that the air inlet pipe and the delivery pipe are connected, and then the air flow can transport the copper powder inside the blanking box. The copper powder inside the blanking box can be circulated and transported into the Y-shaped feed pipe and then fall on the adjusting plate again, which has the advantage of being able to separate repeatedly. When the copper powder is transported inside the delivery pipe, the partition mesh plate can play a blocking role, thus preventing the copper powder from being sucked into the air inlet pipe. The holes on the surface of the partition mesh plate are very fine, which can allow the gas to flow through but cannot allow the copper powder to enter.

[0018] 3. During use, when the copper powder falls on the adjusting plate, by starting the electric push rod, the inclination of the adjusting plate can be changed according to the amount of copper powder. When the amount of copper powder is small, the inclination of the adjusting plate should be large, which is more conducive to blowing the copper powder onto the receiving plate. When the amount of copper powder is large, the inclination of the adjusting plate is made small to prevent some copper powder from not being blown onto the receiving plate by the air flow. When changing the inclination of the adjusting plate, when the touch plate touches the pressure sensor, the pressure value of the pressure sensor increases, and then the electric push rod is paused to prevent the inclination of the adjusting plate from being too large and directly pouring the copper powder it bears into the blanking box. The folding plate is used to prevent the copper powder from falling to the bottom of the adjusting plate, and the fixing spring is used to prevent the touch plate from damaging the pressure sensor. In addition, the balance plate slides telescopically inside the telescopic frame, and the limiting block slides inside the limiting groove, which can prevent the copper powder from falling below the adjusting plate. Description of the Drawings

[0019] Figure 1 This is the front perspective view of the device for preparing high-conductivity ultrafine copper powder by electrolysis according to the present invention; Figure 2 This is the rear perspective view of the device for preparing high-conductivity ultrafine copper powder by electrolysis according to the present invention; Figure 3 This is the perspective view of the separation chamber part of the device for preparing high-conductivity ultrafine copper powder by electrolysis according to the present invention; Figure 4 For the present invention Figure 3 The enlarged view at position A in; Figure 5 This is the perspective view of the unfolded sectional structure of the separation component part of the device for preparing high-conductivity ultrafine copper powder by electrolysis according to the present invention; Figure 6 This is the perspective view of the sieve component part of the device for preparing high-conductivity ultrafine copper powder by electrolysis according to the present invention; Figure 7 This is the perspective view of the transmission component part of the device for preparing high-conductivity ultrafine copper powder by electrolysis according to the present invention; Figure 8 This is the perspective view of the unfolded structure of the adjustment component part of the device for preparing high-conductivity ultrafine copper powder by electrolysis according to the present invention; Figure 9 This is the bottom perspective view of the adjustment component part of the device for preparing high-conductivity ultrafine copper powder by electrolysis according to the present invention.

[0020] In the figure: 1. Separation component; 101. Separation chamber; 102. Sealing cover; 103. Controller; 104. Support frame; 105. Pulling groove; 106. Sliding groove; 107. Receiving drawer; 108. Slide block; 109. Feeding port; 110. Limiting groove; 111. Installation port; 2. Transmission component; 201. Installation plate; 202. Delivery pump; 203. Air outlet pipe; 204. Air inlet pipe; 205. Feeding box; 206. Delivery pipe; 207. Y-shaped feeding pipe; 208. First valve; 209. Second valve; 210. Partition mesh plate; 3. Sieve component; 301. Receiving plate; 302. Fixed port; 303. Limiting mesh plate; 4. Adjustment component; 401. Adjustment plate; 402. Balancing plate; 403. Telescopic frame; 404. Rotating hole; 405. Limiting block; 406. Rotating block; 407. Installation groove; 408. Fixed rod; 409. Folding plate; 410. Fixed block; 411. Fixed spring; 412. Touch plate; 413. Sliding frame; 414. Guide rail; 415. Movable block; 416. Connecting rod; 417. Electric push rod; 418. Pressure sensor. Detailed implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1: Refer to Figures 1-9 As shown, the present invention provides a technical solution: an electrolytic preparation device for high-conductivity ultrafine copper powder, including a separation component 1. The separation component 1 includes a separation chamber 101. Inside the separation chamber 101, a screening component 3 is provided for distinguishing copper powders of different particle sizes. Outside the separation chamber 101, a transmission component 2 is provided for transporting copper powder by air flow. The screening component 3 includes a receiving plate 301. A plurality of fixing openings 302 are formed at the top of the receiving plate 301. The inner wall of each fixing opening 302 is fixedly connected with a limiting mesh plate 303. The transmission component 2 includes a Y-shaped feeding pipe 207. One end of the Y-shaped feeding pipe 207 is fixedly communicated with a conveying pipe 206. One end of the conveying pipe 206 is fixedly communicated with a blanking box 205. The outer surface of one end of the conveying pipe 206 is fixedly communicated with an air inlet pipe 204. The bottom of the separation chamber 101 is fixedly connected with a mounting plate 201. A conveying pump 202 is arranged on the top of the mounting plate 201. The input end of the conveying pump 202 is fixedly communicated with one end of the air inlet pipe 204. The output end of the conveying pump 202 is fixedly communicated with an air outlet pipe 203. A controller 103 is arranged on the front surface of the separation chamber 101. The bottom of the separation chamber 101 is fixedly connected with two support frames 104. An installation opening 111 is formed in the inner wall of one side of the separation chamber 101 near the bottom. Two limiting grooves 110 are symmetrically formed in the inner wall of one side of the separation chamber 101 near the installation opening 111. A blanking opening 109 is formed in the inner bottom surface of the separation chamber 101. The blanking box 205 is fixedly installed at the bottom of the blanking opening 109. A plurality of sliding grooves 106 are formed in the front and rear surfaces of the separation chamber 101 near the opening. The lengths of the sliding grooves 106 on the same side increase in sequence from top to bottom. The inner wall of each sliding groove 106 is slidably connected with a slider 108. A receiving drawer 107 is fixedly connected between the outer surfaces of every two symmetric sliders 108. The receiving drawer 107 is used for collecting the separated copper powder. A closing cover 102 is fixedly connected to the outer surface of one side of each receiving drawer 107. Pulling grooves 105 are formed at both side edges of each closing cover 102. The pulling grooves 105 are used for pulling the closing cover 102. The positions of each limiting mesh plate 303 correspond to each receiving drawer 107 respectively. An adjusting component 4 is fixedly connected to the inner bottom surface of the separation chamber 101. The adjusting component 4 includes a fixing rod 408. The fixing rod 408 is fixedly connected between the front and rear walls of the separation chamber 101. An adjusting plate 401 is rotatably connected to the outside of the fixing rod 408.

[0023] In this embodiment, when in use, the highly conductive ultrafine copper powder has a small particle size and high surface energy, and is therefore easy to agglomerate. That is to say, the copper powders prepared at the same time may have different bulk ratios, and further separation is required. Since the copper powders with different bulk ratios have different suspension speeds in the airflow, the copper powder particles with smaller bulk ratios are lighter, have a faster suspension speed in the airflow, and are easily carried away by the airflow, while the copper powder particles with larger bulk ratios are heavier, have a slower suspension speed, and are easy to settle. Therefore, the airflow can be used to accurately separate the copper powders with different bulk ratios. Usually, when preparing copper powder by electrolysis, it is necessary to first prepare an electrolytic copper plate, then place it in an electrolytic cell for electrolysis, and after electrolysis, put it in a powder washing tank to wash the electrolyte clean and dry it. After cleaning, it is dehydrated with a spin dryer, and then placed in a reduction furnace for drying and reduction, and then crushed with a pulverizer. The crushed copper fragments are sieved with a vibrating screen, and particles of different particle sizes can be obtained. The conveying feed pipe is connected to the Y-shaped feed pipe 207, so that the copper powder after vibration screening is slowly conveyed into the separation chamber 101, and the copper powder will fall on the adjustment plate 401. At this time, the delivery pump 202 is electrically connected to the controller 103, and the delivery pump 202 is started by control, so that the delivery pump 202 is pressurized, and its output end will quickly output airflow to the outside, and the high-pressure and high-speed airflow passes through the outlet pipe 203 into the separation chamber 101. The output direction of the airflow is toward the copper powder pile, which will blow the copper powder forward. The blown copper powder falls on the surface of the receiving plate 301. The surface of the receiving plate 301 is coated with an anti-stick coating to prevent the copper powder from sticking to the receiving plate 301 and being unable to slide off. Then the lighter copper powder is brought into the higher fixed port 302 by the airflow, and thus falls into the receiving drawer 107 below the corresponding position. The limiting mesh plate 303 can prevent the agglomerated copper powder blocks from passing through the fixed port 302 and entering the receiving drawer 107. The heavier copper powder sinks into the lower fixed port 302 under the action of gravity and falls into the corresponding receiving drawer 107. Therefore, copper powders with different loose ratios can be distinguished and collected, making the separation more accurate and meeting the requirements for copper powders with different loose ratios to be used for The needs of different application scenarios, among which, when the collection work inside the material receiving drawer 107 is completed, the closing cover 102 and the material receiving drawer 107 can be easily pulled out with the help of the pull groove 105, and the sliders 108 on both sides of the material receiving drawer 107 are movably connected to the slide grooves 106 at the corresponding positions, which can prevent the material receiving drawer 107 from falling off and causing the copper powder to be spilled. The copper powder that fails to pass through the fixed port 302 in time falls into the discharge box 205. At this time, the conveying pump 202 is started to make the copper powder inside the discharge box 205 be sucked into the conveying pipe 206 again, and then return to the Y-shaped feeding pipe 207, and separated repeatedly, wherein the agglomerated copper powder can be blown away when being conveyed inside the conveying pipe 206.

[0024] Embodiment 2: Figures 1-7As shown in the figure, the Y-shaped feed pipe 207 is fixedly connected to the top of the separation chamber 101. A flange is fixed at the other end of the Y-shaped feed pipe 207, and the other end of the Y-shaped feed pipe 207 is connected to the previous equipment. A first valve 208 is provided on the outer surface of the other end of the Y-shaped feed pipe 207. A second valve 209 is provided on the outer surface of the intake pipe 204 near one end of the Y-shaped feed pipe 207. The outlet pipe 203 is fixedly connected to one side of the installation opening 111. A partition screen plate 210 is fixedly connected to the inner wall of the intake pipe 204 at the end connected to the Y-shaped feed pipe 207. The partition screen plate 210 is used to block the copper powder extracted through the intake pipe 204 outside the intake pipe 204.

[0025] In this embodiment, during use, since the Y-shaped feed pipe 207 has two feed ports, the end with the flange is connected to the previous preparation equipment. When transporting copper powder from the previous preparation equipment, the first valve 208 needs to be opened, and the first valve 208 can be closed after the transportation is completed. When using the intake pipe 204 and the conveying pipe 206 to pump and transport copper powder, the second valve 209 needs to be opened so that the intake pipe 204 and the conveying pipe 206 are connected, and then the air flow can transport the copper powder inside the blanking box 205. The copper powder inside the blanking box 205 can be cyclically transported into the Y-shaped feed pipe 207 and fall on the adjusting plate 401 again, which has the advantage of being able to separate repeatedly. Among them, when the copper powder is transported inside the conveying pipe 206, the partition screen plate 210 can play a blocking role, so as to prevent the copper powder from being sucked into the intake pipe 204. The holes on the surface of the partition screen plate 210 are very fine, which can allow the gas to flow through but cannot allow the copper powder to enter.

[0026] Embodiment Three: Figures 5-9As shown, an adjustment component 4 is fixedly connected to the inner bottom surface of the separation chamber 101. The adjustment component 4 includes a fixed rod 408. The fixed rod 408 is fixedly connected between the front and rear walls of the separation chamber 101. A regulating plate 401 is rotatably connected to the outside of the fixed rod 408. The regulating plate 401 is used to carry the copper powder to be separated. A folding plate 409 is fixedly connected to the bottom of one side of the regulating plate 401. The folding plate 409 is fixedly connected to the inner bottom surface of the separation chamber 101. A fixed block 410 is fixedly connected to the bottom of the regulating plate 401. A fixed spring 411 is arranged at the bottom of the fixed block 410. The bottom end of the fixed spring 411 is fixedly connected to a touch plate 412. A pressure sensor 418 is arranged on the inner bottom surface of the separation chamber 101. The positions of the touch plate 412 and the pressure sensor 418 correspond to each other. A sliding frame 413 is fixedly connected to the bottom of the regulating plate 401 near the fixed block 410. A guide rail 414 is formed at the bottom of the sliding frame 413. A movable block 415 is slidably connected to the inside of the sliding frame 413. A connecting rod 416 is fixedly connected to the outer surface of the movable block 415. The connecting rod 416 is slidably connected to the inner wall of the guide rail 414. An electric push rod 417 is arranged at the bottom end of the connecting rod 416. The electric push rod 417 is arranged on the inner bottom surface of the separation chamber 101. Two mounting grooves 407 are symmetrically formed on the other side of the regulating plate 401. Rotating blocks 406 are fixedly connected to the inner walls of the two mounting grooves 407. A balancing plate 402 is attached to the outside of the other side of the regulating plate 401. Rotating holes 404 are formed on both sides of the balancing plate 402. The inner walls of the two rotating holes 404 are respectively rotatably connected to the outer surfaces of the two rotating blocks 406. A telescopic frame 403 is slidably sleeved on the outside of the balancing plate 402. Two limiting blocks 405 are fixedly connected to the outer surface of the telescopic frame 403. The outer surfaces of each limiting block 405 are respectively slidably connected to the inner walls of each limiting groove 110.

[0027] In this embodiment, during use, when the copper powder falls on the adjusting plate 401, the inclination of the adjusting plate 401 can be changed according to the amount of the copper powder. During adjustment, by starting the electric push rod 417, the connecting rod 416 is driven to move up and down. At this time, the movable block 415 will move inside the sliding frame 413, thereby driving the adjusting plate 401 to rotate. When there is less copper powder, the inclination of the adjusting plate 401 should be made larger, which is more conducive to blowing the copper powder onto the material receiving plate 301. When there is more copper powder, the inclination of the adjusting plate 401 is made smaller, that is, more gentle, to prevent some copper powder from not being blown onto the material receiving plate 301 by the air flow. When changing the inclination degree of the adjusting plate 401, when the touch plate 412 contacts the pressure sensor 418, the pressure value of the pressure sensor 418 increases, and the electric push rod 417 is paused to prevent the inclination degree of the adjusting plate 401 from being too large and directly pouring the copper powder it carries into the blanking box 205. The folding plate 409 is automatically folded according to the movement of the adjusting plate 401, and its function is to prevent copper powder from falling to the bottom of the adjusting plate 401. The function of the fixing spring 411 is to elastically press the touch plate 412 against the pressure sensor 418 to prevent the touch plate 412 from damaging the pressure sensor 418. When the adjusting plate 401 rotates around the fixed rod 408, the balance plate 402 will telescopically slide inside the telescopic frame 403, and the limiting block 405 will slide inside the limiting groove 110, which can prevent copper powder from falling below the adjusting plate 401. The balance plate 402 and the adjusting plate 401 are installed together by installing the rotating block 406 inside the rotating hole 404.

[0028] The process and working principle of this device: When in use, the particle size of highly conductive ultrafine copper powder is small and the surface energy is high, so it is easy to agglomerate. That is to say, the copper powder prepared at the same time will have different loose ratios, which requires further separation. Since the suspension speeds of copper powders with different loose ratios in the airflow are different, the copper powder particles with smaller loose ratios are lighter and have a faster suspension speed in the airflow, and are easily carried away by the airflow, while the copper powder particles with larger loose ratios are heavier and have a slower suspension speed, and are easy to settle. Therefore, the airflow can be used to accurately separate copper powders with different loose ratios. Usually, when preparing copper powder by electrolysis, it is necessary to prepare an electrolytic copper plate first, and then place it in an electrolytic cell for electrolysis. After electrolysis, put it in a powder washing tank to wash the electrolyte, and then use a spin dryer to dehydrate it. The copper powder is then placed in a reduction furnace for drying and reduction, and then crushed using a crusher. The crushed copper fragments are screened using a vibrating screen, and particles of different particle sizes can be obtained at this time. The conveying feed pipe is connected to the Y-shaped feed pipe 207, so that the copper powder after vibration screening is slowly conveyed into the separation chamber 101, and the copper powder will fall on the adjustment plate 401. At this time, the conveying pump 202 is electrically connected to the controller 103, and the conveying pump 202 is started by control, so that the conveying pump 202 is pressurized, and its output end will quickly output air flow to the outside, and the high-pressure and high-speed airflow enters the separation chamber 101 through the outlet pipe 203. The output direction of the airflow is toward the copper powder pile, which will blow the copper powder forward, and the blown copper powder falls on the surface of the receiving plate 301, and the surface of the receiving plate 301 is coated with a layer of anti-sticking The coating can prevent the copper powder from sticking to the receiving plate 301 and being unable to slide off. Then the lighter copper powder is brought into the higher fixed port 302 by the airflow, and then falls into the receiving drawer 107 below the corresponding position. The limiting mesh plate 303 can prevent the agglomerated copper powder blocks from passing through the fixed port 302 and entering the receiving drawer 107. The heavier copper powder sinks into the lower fixed port 302 under the action of gravity and falls into the corresponding receiving drawer 107. When the collection work inside the receiving drawer 107 is completed, the closing cover 102 and the receiving drawer 107 can be easily pulled out with the help of the pull groove 105. The sliders 108 on both sides of the receiving drawer 107 are movably connected to the slide grooves 106 at the corresponding positions, which can avoid the material drawing. The copper powder is knocked over due to the fall of the drawer 107. The copper powder that fails to pass through the fixed port 302 in time falls into the material box 205. At this time, the delivery pump 202 is started to draw the copper powder inside the material box 205 into the delivery pipe 206 again, and then returns to the inside of the Y-shaped feeding pipe 207 for repeated separation. The agglomerated copper powder can be blown away when being transported inside the delivery pipe 206. When in use, the Y-shaped feeding pipe 207 has two feed ports, and one end with a flange is connected to the previous preparation equipment. When conveying copper powder from the previous preparation equipment, the first valve 208 needs to be opened. After the delivery is completed, the first valve 208 can be closed. When the copper powder is pumped by the air inlet pipe 204 and the delivery pipe 206, the second valve 209 needs to be opened.Thus, the intake pipe 204 is connected to the delivery pipe 206, thereby completing the delivery of the airflow to the copper powder inside the blanking box 205. The copper powder inside the blanking box 205 can be circulated and delivered into the Y-shaped feed pipe 207 and then fall onto the adjusting plate 401 again. When the copper powder is being delivered inside the delivery pipe 206, the partition mesh plate 210 can play a blocking role, thus preventing the copper powder from being sucked into the intake pipe 204. The holes on the surface of the partition mesh plate 210 are very fine, allowing the gas to flow through but not allowing the copper powder to enter. During use, when the copper powder falls onto the adjusting plate 401, the inclination of the adjusting plate 401 can be changed according to the amount of copper powder. During adjustment, by starting the electric push rod 417, the connecting rod 416 is driven to move up and down. At this time, the movable block 415 will move inside the sliding frame 413, thereby driving the adjusting plate 401 to rotate. When there is less copper powder, the inclination of the adjusting plate 401 should be larger, which is more conducive to blowing the copper powder onto the receiving plate 301. When there is more copper powder, the inclination of the adjusting plate 401 should be smaller, that is, flatter, to prevent some copper powder from not being blown onto the receiving plate 301 by the airflow. When changing the inclination of the adjusting plate 401, when the touch plate 412 touches the pressure sensor 418, the pressure value of the pressure sensor 418 increases, and the electric push rod 417 is paused to prevent the inclination of the adjusting plate 401 from being too large and directly pouring the copper powder it carries into the blanking box 205. The folding plate 409 folds automatically according to the movement of the adjusting plate 401, and its function is to prevent the copper powder from falling to the bottom of the adjusting plate 401. The function of the fixing spring 411 is to elastically press the touch plate 412 against the pressure sensor 418 to prevent the touch plate 412 from damaging the pressure sensor 418. When the adjusting plate 401 rotates around the fixed rod 408, the balance plate 402 will slide telescopically inside the telescopic frame 403, and the limiting block 405 will slide inside the limiting groove 110, which can prevent the copper powder from falling below the adjusting plate 401. By installing the rotating block 406 inside the rotating hole 404, the balance plate 402 and the adjusting plate 401 are installed together.

[0029] The wiring diagrams of the controller 103, the delivery pump 202, and the pressure sensor 418 in the present invention belong to the common knowledge in the art. Their working principles are already well-known technologies, and their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the controller 103, the delivery pump 202, and the pressure sensor 418 will not be explained in detail.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A highly conductive ultrafine copper powder electrolytic preparation device, comprising a separation component (1), the separation component (1) comprising a separation chamber (101), a screening component (3) for distinguishing copper powders of different particle sizes arranged inside the separation chamber (101), and a transmission component (2) for conveying copper powders by air flow arranged outside the separation chamber (101), characterized in that: The screening assembly (3) comprises a material receiving plate (301), a plurality of fixing openings (302) are provided on the top of the material receiving plate (301), and a limiting mesh plate (303) is fixedly connected to the inner wall of each fixing opening (302); The transmission component (2) comprises a Y-shaped feed pipe (207), one end of the Y-shaped feed pipe (207) is fixedly connected to a delivery pipe (206), one end of the delivery pipe (206) is fixedly connected to a material discharge box (205), one end of the delivery pipe (206) is fixedly connected to an air inlet pipe (204) on its outer surface, the bottom of the separation chamber (101) is fixedly connected to a mounting plate (201), a delivery pump (202) is arranged on the top of the mounting plate (201), an input end of the delivery pump (202) is fixedly connected to one end of the air inlet pipe (204), and an output end of the delivery pump (202) is fixedly connected to an air outlet pipe (203).

2. The device for preparing highly conductive ultrafine copper powder by electrolysis according to claim 1, characterized in that: A controller (103) is arranged on the front surface of the separation chamber (101); two support frames (104) are fixedly connected to the bottom of the separation chamber (101); a mounting opening (111) is provided on the inner wall of one side of the separation chamber (101) near the bottom; two limiting grooves (110) are symmetrically provided on the inner wall of one side of the separation chamber (101) near the mounting opening (111); a material discharge opening (109) is provided on the inner bottom surface of the separation chamber (101); and the material discharge box (205) is fixedly installed at the bottom of the material discharge opening (109).

3. The device for preparing highly conductive ultrafine copper powder by electrolysis according to claim 2, characterized in that: A plurality of slide grooves (106) are provided near the opening on the front and rear surfaces of the separation chamber (101), and the lengths of the slide grooves (106) on the same side increase in order from top to bottom. The inner wall of each slide groove (106) is slidably connected to a slider (108), and a material receiving drawer (107) is fixedly connected between the outer surfaces of each two symmetrical sliders (108), and the material receiving drawer (107) is used to collect the separated copper powder. The outer surface of one side of each material receiving drawer (107) is fixedly connected to a closing cover (102), and a pull groove (105) is provided at the edges of both sides of each closing cover (102), and the pull groove (105) is used to realize the pulling of the closing cover (102), and the position of each limiting mesh plate (303) corresponds to each material receiving drawer (107).

4. The device for preparing highly conductive ultrafine copper powder by electrolysis according to claim 3, characterized in that: The Y-shaped feed pipe (207) is fixedly connected to the top of the separation chamber (101), a flange is fixedly provided at the other end of the Y-shaped feed pipe (207), the other end of the Y-shaped feed pipe (207) is connected to the previous device, a first valve (208) is arranged on the outer surface of the other end of the Y-shaped feed pipe (207), and a second valve (209) is arranged on the outer surface of the air inlet pipe (204) near one end of the Y-shaped feed pipe (207).

5. The device for preparing highly conductive ultrafine copper powder by electrolysis according to claim 4, characterized in that: The air outlet pipe (203) is fixedly connected to one side of the installation port (111), and a material separator mesh plate (210) is fixedly connected to the inner wall of one end of the air inlet pipe (204) connected to the Y-shaped feed pipe (207), wherein the material separator mesh plate (210) is used to block the copper powder extracted through the air inlet pipe (204) outside the air inlet pipe (204).

6. The device for preparing highly conductive ultrafine copper powder by electrolysis according to claim 5, characterized in that: The inner bottom surface of the separation chamber (101) is fixedly connected to an adjustment component (4), the adjustment component (4) comprising a fixing rod (408), the fixing rod (408) being fixedly connected between a front surface wall and a rear surface wall of the separation chamber (101), the outer portion of the fixing rod (408) being rotatably connected to an adjustment plate (401), the adjustment plate (401) being used to carry copper powder to be separated, and a folding plate (409) being fixedly connected to the bottom of one side of the adjustment plate (401), the folding plate (409) being fixedly connected to the inner bottom surface of the separation chamber (101).

7. The device for preparing highly conductive ultrafine copper powder by electrolysis according to claim 6, characterized in that: The bottom of the adjustment plate (401) is fixedly connected to a fixing block (410), the bottom of the fixing block (410) is provided with a fixing spring (411), the bottom end of the fixing spring (411) is fixedly connected to a touch plate (412), and the inner bottom surface of the separation chamber (101) is provided with a pressure sensor (418), and the positions of the touch plate (412) and the pressure sensor (418) correspond.

8. The device for preparing highly conductive ultrafine copper powder by electrolysis according to claim 7, characterized in that: A sliding frame (413) is fixedly connected to the bottom of the adjustment plate (401) near the fixed block (410), a guide rail (414) is provided at the bottom of the sliding frame (413), a movable block (415) is slidably connected inside the sliding frame (413), a connecting rod (416) is fixedly connected to the outer surface of the movable block (415), the connecting rod (416) is slidably connected to the inner wall of the guide rail (414), an electric push rod (417) is provided at the bottom end of the connecting rod (416), and the electric push rod (417) is provided on the inner bottom surface of the separation chamber (101).

9. The device for preparing highly conductive ultrafine copper powder by electrolysis according to claim 8, characterized in that: Two mounting grooves (407) are symmetrically provided on the other side of the adjustment plate (401), and the inner walls of the two mounting grooves (407) are fixedly connected with a rotating block (406). A balancing plate (402) is arranged on the outside of the other side of the adjustment plate (401), and rotating holes (404) are provided on both sides of the balancing plate (402), and the inner walls of the two rotating holes (404) are respectively rotatably connected with the outer surfaces of the two rotating blocks (406). A telescopic frame (403) is provided on the outer sliding sleeve of the balancing plate (402), and the outer surface of the telescopic frame (403) is fixedly connected with two limiting blocks (405), and the outer surface of each limiting block (405) is respectively slidably connected with the inner wall of each limiting groove (110).

10. A process for preparing a highly conductive ultrafine copper powder by electrolysis, characterized in that: The highly conductive ultrafine copper powder electrolytic preparation device according to claim 9 is used, comprising the following steps: S1. By controlling and starting the delivery pump (202), a high-pressure and high-speed airflow is passed through the air outlet pipe (203) into the separation chamber (101). The output direction of the airflow is toward the copper powder pile, and the copper powder is blown forward. The blown copper powder falls on the surface of the receiving plate (301). Then, the lighter copper powder is carried by the airflow into the fixed opening (302) at a higher position, and then falls into the receiving drawer (107) at the corresponding position below. The limiting mesh plate (303) can prevent the agglomerated copper powder blocks from passing through the fixed opening (302) and entering the receiving drawer (107). The heavier copper powder sinks into the fixed opening (302) at a lower position under the action of gravity and falls into the corresponding receiving drawer (107). When the collection work inside the receiving drawer (107) is completed, the closing cover (102) and the receiving drawer (107) can be conveniently pulled out by means of the pull groove (105); S2, by starting the delivery pump (202), the copper powder inside the material box (205) is pumped into the delivery pipe (206) again, and then returns to the inside of the Y-shaped feeding pipe (207), and is repeatedly separated, and the first valve (208) is opened. After the delivery is completed, the first valve (208) can be closed, and when the copper powder is pumped by the air intake pipe (204) and the delivery pipe (206), the second valve (209) is opened, so that the air intake pipe (204) and the delivery pipe (206) are connected, and the air flow is completed to transport the copper powder inside the material box (205), and the copper powder inside the material box (205) can be circulated and transported to the inside of the Y-shaped feeding pipe (207), and then fall on the adjustment plate (401) again; S3, by starting the electric push rod (417), thereby driving the connecting rod (416) to move up and down, at this time, the movable block (415) will move inside the sliding frame (413), thereby driving the adjustment plate (401) to rotate. When the copper powder is small, the inclination of the adjustment plate (401) should be large, which is more conducive to blowing the copper powder onto the receiving plate (301). When the amount of copper powder is large, the inclination of the adjustment plate (401) is small. When the inclination of the adjustment plate (401) is changed, when the touch plate (412) contacts the pressure sensor (418), the pressure value of the pressure sensor (418) increases, and the electric push rod (417) is suspended to prevent the adjustment plate (401) from tilting too much and directly pouring the copper powder it carries into the unloading box (205); S4. When the adjustment plate (401) rotates around the fixed rod (408), the balance plate (402) will telescope and slide inside the telescopic frame (403), and the limit block (405) will slide inside the limit groove (110), thereby preventing the copper powder from falling under the adjustment plate (401). The balance plate (402) and the adjustment plate (401) are installed together by installing the rotating block (406) inside the rotating hole (404).

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