Silver-coated copper powder grinding and drying integrated device

Abstract

The invention discloses a silver-coated copper powder grinding and drying integrated device, and relates to the technical field of silver-coated copper powder production.The silver-coated copper powder grinding and drying integrated device comprises a working box, a fixing ring is fixedly connected to the inner wall of the upper side of the working box, a grinding assembly is arranged at the upper end of the fixing ring, a screening assembly is arranged at the lower end of the fixing ring, and a material returning assembly is arranged between the grinding assembly and the screening assembly; a fixing block is arranged on the lower side of the screening assembly, a conveying assembly is arranged in the middle of the fixing block, a water inlet pipe is fixedly installed at the left end of the working box, a drying assembly is fixedly installed at the right end of the working box, and a driving assembly is arranged at the upper end of the working box. The ground copper powder is screened through the screening assembly in cooperation with a rotating motor to drive a knocking wheel, unqualified copper powder is subjected to material returning treatment through the material returning assembly, qualified copper powder falls onto a fixing block and is subjected to cleaning and drying treatment in cooperation with a material conveying mechanism, and the dried copper powder is discharged through the discharging assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of silver-coated copper powder production, and specifically relates to an integrated device for grinding and drying silver-coated copper powder. Background Art

[0002] Silver powder is a widely used conductive filler in electronic pastes. However, compared with base metals, its price is still expensive; copper has a low price and its electrothermal performance is second only to silver, but it is easy to oxidize to form an insulating oxide film, with poor stability and reliability, thus greatly reducing its practicality. Silver-coated copper powder is to coat a layer of silver particles on the surface of copper powder to improve the antioxidant stability and conductivity of copper and reduce costs. Silver-coated copper powder has broad market prospects in the electronic paste industry such as conductive adhesives, polymer pastes, conductive and antistatic coatings, as well as in industries such as electromagnetic shielding and surface modification of non-conductive materials.

[0003] Among them, the raw material copper powder for silver-coated copper powder needs to be ground. During the grinding process, the medium used may generate micron-sized debris due to wear and adhere to the surface of the copper powder, and the copper powder debris generated by grinding or dust in the environment may also be mixed into the copper powder. These residual abrasives will hinder the subsequent uniform deposition of the silver layer, resulting in an increase in the porosity of the coating and a decrease in conductivity. Based on this, it is necessary to clean the ground copper powder. In existing equipment, grinding, cleaning, and drying are all carried out by different equipment, and the overall processing efficiency is relatively slow. Based on this, this solution provides an integrated device for grinding and drying silver-coated copper powder to solve the above-mentioned problems. Summary of the Invention

[0004] To solve the above technical problems, an integrated device for grinding and drying silver-coated copper powder is provided, and this technical solution solves the problems raised in the above background art.

[0005] In order to achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An integrated device for grinding and drying silver-coated copper powder, comprising a working box. There is an opening at the top of the working box. Above the opening, there is a cover body fixedly installed on the working box. A feed hopper is fixedly installed on the cover body. The upper inner wall of the working box is fixedly connected with a fixed ring. At the upper end of the fixed ring, there is a grinding assembly for grinding. At the lower end of the fixed ring, there is a screening assembly for filtering. At the right end of the fixed ring, a rotating motor is fixedly installed. The output shaft of the rotating motor is fixedly connected with a rotating shaft. At the lower end of the rotating shaft, a knocking wheel is fixedly connected. And a material returning assembly is arranged between the grinding assembly and the screening assembly. Below the screening assembly, there is a fixed block fixedly connected to the working box. In the middle of the fixed block, there is a material conveying assembly. At the left end of the working box, a water inlet pipe for discharging water is fixedly installed. At the right end of the working box, a drying assembly for drying is fixedly installed. At the bottom of the working box, there is a discharging assembly. At the upper end of the working box, a fixed frame is fixedly connected. On the fixed frame, a driving assembly is fixedly installed.

[0007] Preferably, the driving assembly includes a servo motor fixedly installed on the fixed frame. The output shaft of the servo motor is fixedly connected with a first rotating shaft. The lower end of the first rotating shaft penetrates through the top of the working box and is fixedly connected with a second gear. The second gear is meshed and connected with the grinding assembly. At the upper end of the first rotating shaft, a driving wheel is fixedly connected. A transmission belt is sleeved on the driving wheel. On the left side of the transmission belt, a driven wheel is sleeved. The lower end of the driven wheel is fixedly connected with a second rotating shaft. The lower ends of the second rotating shaft are respectively fixedly connected with the material returning assembly and the material conveying assembly.

[0008] Preferably, the grinding assembly includes a first gear meshed and connected with the second gear. A first grinding plate is fixedly connected to the first gear. The upper and lower ends of the first grinding plate are respectively rotatably connected with the working box and the fixed ring. Inside the first grinding plate, there is a second grinding plate. The lower end of the second grinding plate is fixedly connected with a plurality of groups of connecting frames. One ends of the connecting frames are all fixedly connected with the fixed ring. The lower end of the first grinding plate is fixedly connected with a plurality of groups of scrapers for cleaning. In the middle of the second grinding plate, a material returning assembly is fixedly installed.

[0009] Preferably, the material returning assembly includes a first fixed cylinder fixedly installed in the middle of the second grinding plate. Inside the first fixed cylinder, there are material returning blades fixedly installed on the second rotating shaft. At the lower end of the first fixed cylinder, a plurality of groups of first feeding ports are opened. And the lower end of the first fixed cylinder is fixedly connected with the screening assembly.

[0010] Preferably, the screening assembly includes a lower plate fixedly connected to the lower end of the first fixed cylinder. Above the lower plate, there is an upper plate fixedly connected to the fixed ring. A screen is fixedly connected between the upper plate and the lower plate.

[0011] Preferably, the upper end surface of the fixed block is inclined towards the middle, and a feeding component is arranged at the lowest point. A through groove is arranged between the feeding component and the fixed block. A plurality of groups of drainage channels opened in the fixed block are arranged inside the through groove. Drainage plates are fixedly connected to the inlets of the drainage channels respectively. A permeable membrane is coated on the surface of each drainage plate. An annular water groove is opened at the bottom of the fixed block. A plurality of groups of slag discharge grooves are opened on the inclined surface of the fixed block. The lower ends of the slag discharge grooves communicate with the drainage channels, and the drainage channels all communicate with the annular water groove. A slag discharge pipe communicating with the annular water groove is fixedly installed at the left end of the working box, and a solenoid valve is fixedly installed on the slag discharge pipe.

[0012] Preferably, the feeding component includes a second fixed cylinder fixedly installed on the fixed block. A feeding blade fixedly installed on a second rotating shaft is arranged inside the second fixed cylinder. A stirring blade fixedly installed on the second rotating shaft is arranged above the feeding blade. The second fixed cylinder is provided with a plurality of groups of second feeding ports at the position of the through groove. The lower end of the second fixed cylinder penetrates through the fixed block and communicates with the discharging component.

[0013] Preferably, the discharging component includes a third fixed cylinder communicating with the lower end of the second fixed cylinder. A driving motor fixedly installed at the bottom of the working box is arranged on the left side of the third fixed cylinder. The output shaft of the driving motor is fixedly connected with a discharging shaft. The right end of the discharging shaft penetrates into the inside of the third fixed cylinder and is fixedly connected with a discharging blade.

[0014] Preferably, a water level sensor fixedly installed on the inner wall of the working box is arranged on the lower side of the water inlet pipe. The drying component includes an air heater fixedly installed on the working box. A blower is fixedly installed on the air heater. The input pipe of the blower communicates with the air heater. The output pipe of the blower is fixedly installed with an air duct. The output end of the air duct penetrates into the inside of the working box, and a one-way valve is fixedly installed on the air duct. A temperature sensor is fixedly installed on the inner wall of the working box.

[0015] Compared with the prior art, the present invention provides a silver-coated copper powder grinding and drying integrated device, which has the following

[0016] Beneficial effects:

[0017] 1. In the present invention, a grinding component is provided. Through the servo motor in the driving component cooperating with the first rotating shaft and the second gear, the first grinding plate in the grinding component is driven to rotate, and in cooperation with the second grinding plate, the copper powder is ground. The ground copper powder finally falls on the upper plate and the screen, and in cooperation with the knocking piece, the screen is periodically knocked, so as to screen the ground copper powder. At the same time, the servo motor of the driving component cooperates with the driving wheel, the transmission belt, the driven wheel and the second rotating shaft, so as to synchronously drive the return feeding blade to rotate, and re-feed the unqualified copper powder on the screen back to the inlet of the grinding component for secondary grinding, improving the quality of the final copper powder and enhancing the production efficiency and the stability of the output.

[0018] 2. In the present invention, there is a fixed block. After the ground copper powder is sieved, the qualified products fall onto the fixed block. Through the inclined surface of the fixed block, the copper powder finally accumulates at the entrance of the second fixed cylinder in the feeding component. Subsequently, water is injected into the working box through the water inlet pipe, and the water level sensor is used to prevent overfilling. At the same time, the second rotating shaft in the driving component synchronously drives the blades in the feeding component to drive the copper powder at the entrance upward and sprinkle it outward, thereby preventing the copper powder from being incompletely cleaned due to accumulation. Meanwhile, the stirring blades on the upper side will stir the water flow, and the fine copper powder debris will be separated from the copper powder due to the action of centrifugal force and finally fall from the slag discharge groove. After the cleaning is completed, the solenoid valve is opened, and water is drained through the drainage channel, so that the water flow takes away the copper powder debris and dust together, realizing the cleaning of the ground copper powder.

[0019] 3. When drying the cleaned copper powder in the present invention, hot air in the air heater is introduced into the working box through the fan, thereby increasing the temperature in the working box. The temperature sensor can monitor the drying temperature to prevent overheating. At the same time, the second rotating shaft in the driving component synchronously drives the blades in the feeding component to drive the copper powder at the entrance upward and sprinkle it outward, thereby preventing the copper powder from being incompletely dried due to accumulation, effectively improving the drying efficiency of the copper powder. After drying for a period of time, the servo motor in the driving component rotates in reverse, so that the feeding component feeds downward and transports the dried copper powder into the discharging component, thereby transporting the copper powder out. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the structures of the grinding component and the driving component in the present invention;

[0022] Figure 3 is a schematic diagram of the structures of the fixed block, the feeding component and the discharging component in the present invention;

[0023] Figure 4 is a schematic diagram of the structures of the driving component, the material returning component and the feeding component in the present invention;

[0024] Figure 5 is the present invention Figure 1 an enlarged schematic diagram of the structure at A in;

[0025] Figure 6 is the present invention Figure 1 an enlarged schematic diagram of the structure at B in.

[0026] The reference numerals in the figures are:

[0027] 1. Working box; 2. Opening; 3. Cover body; 301. Feeding hopper; 4. Fixed ring; 5. Grinding assembly; 501. First grinding plate; 502. Second grinding plate; 503. First gear; 504. Connecting frame; 505. Scraper; 6. Screening assembly; 601. Upper plate; 602. Lower plate; 603. Sieve mesh; 7. Return material assembly; 701. Return material blade; 702. First fixed cylinder; 703. First feeding port; 8. Rotating motor; 801. Rotating shaft; 802. Knocking wheel; 9. Fixed block; 901. Through groove; 902. Drainage channel; 903. Slag discharge tank; 904. Annular water tank; 905. Slag discharge pipe; 906. Solenoid valve; 10. Feeding assembly; 1001. Feeding blade; 1002. Second fixed cylinder; 1003. Stirring blade; 1004. Second feeding port; 11. Water inlet pipe; 1101. Water level sensor; 12. Drying assembly; 1201. Air heater; 1202. Fan; 1203. Air duct; 1204. Check valve; 1205. Temperature sensor; 13. Discharging assembly; 1301. Third fixed cylinder; 1302. Driving motor; 1303. Discharging shaft; 1304. Discharging blade; 14. Driving assembly; 1401. Servo motor; 1402. First rotating shaft; 1403. Second gear; 1404. Driving wheel; 1405. Transmission belt; 1406. Driven wheel; 1407. Second rotating shaft; 15. Fixed frame; 16. Drainage plate; 17. Permeable membrane. Detailed implementation manners

[0028] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0029] Referring to Figures 1-6 As shown, an integrated device for grinding and drying silver-coated copper powder includes a working box 1. An opening 2 is provided at the top of the working box 1. A cover body 3 fixedly installed on the working box 1 is provided above the opening 2. A feeding hopper 301 is fixedly installed on the cover body 3. The upper inner wall of the working box 1 is fixedly connected with a fixed ring 4. A grinding assembly 5 for grinding is provided at the upper end of the fixed ring 4. A screening assembly 6 for filtering is provided at the lower end of the fixed ring 4. A rotating motor 8 is fixedly installed at the right end of the fixed ring 4. The output shaft of the rotating motor 8 is fixedly connected with a rotating shaft 801. A knocking wheel 802 is fixedly connected to the lower end of the rotating shaft 801. A return material assembly 7 is provided between the grinding assembly 5 and the screening assembly 6. A fixed block 9 fixedly connected to the working box 1 is provided below the screening assembly 6. A feeding assembly 10 is provided in the middle of the fixed block 9. A water inlet pipe 11 for discharging water is fixedly installed at the left end of the working box 1. A drying assembly 12 for drying is fixedly installed at the right end of the working box 1. A discharging assembly 13 is provided at the bottom of the working box 1. A fixed frame 15 is fixedly connected to the upper end of the working box 1. A driving assembly 14 is fixedly installed on the fixed frame 15.

[0030] Further: The driving component 14 drives the grinding component 5 to grind the copper powder. After grinding, the copper powder finally falls on the screening component 6, and cooperates with the knocking piece to periodically knock the screening component 3, so as to screen the ground copper powder. At the same time, the servo motor 1401 in the driving component 14 cooperates with the driving wheel 1404, the transmission belt 1405, the driven wheel 1406 and the second rotating shaft 1407, so as to synchronously drive the return material component 7 to rotate, bring the unqualified copper powder on the screening component 6 back to the inlet of the grinding component 5, and perform secondary grinding, improving the quality of the final copper powder, and enhancing the production efficiency and the stability of the output. After the ground copper powder is screened, the qualified product falls on the fixed block 9, and then the water inlet pipe 11 cooperates with the feeding component 10 to clean the copper powder. After cleaning, the feeding component 10 cooperates with the drying component 12 to dry the copper powder. After drying, the copper powder is discharged through the discharging component 13.

[0031] Specifically, in this embodiment, the driving component 14 includes a servo motor 1401 fixedly installed on the fixing frame 15. The output shaft of the servo motor 1401 is fixedly connected with a first rotating shaft 1402. The lower end of the first rotating shaft 1402 penetrates through the top end of the working box 1 and is fixedly connected with a second gear 1403. The second gear 1403 is meshed with the grinding component 5. The upper end of the first rotating shaft 1402 is fixedly connected with a driving wheel 1404. A transmission belt 1405 is sleeved on the driving wheel 1404. A driven wheel 1406 is sleeved on the left side of the transmission belt 1405. The driven wheel 1406 is fixedly connected with a second rotating shaft 1407. The lower end of the second rotating shaft 1407 is fixedly connected with the return material component 7 and the feeding component 10 respectively.

[0032] Further: The driving component 14 starts the servo motor 1401, so that the servo motor 1401 drives the first rotating shaft 1402, and the first rotating shaft 1402 further drives the second gear 1403 and the driving wheel 1404. The second gear 1403 drives the grinding component 5 through meshing, and the driving wheel 1404 further drives the transmission of the transmission belt 1405, further driving the driven wheel 1406. The driven wheel 1406 further drives the second rotating shaft 1407, and the second rotating shaft 1407 further drives the return material component 7 and the feeding component 10 to rotate synchronously.

[0033] Specifically, in this embodiment, the grinding assembly 5 includes a first gear 503 meshed with the second gear 1403. A first grinding plate 501 is fixedly connected to the first gear 503. The upper and lower ends of the first grinding plate 501 are respectively rotatably connected to the working box 1 and the fixing ring 4. A second grinding plate 502 is arranged inside the first grinding plate 501. A plurality of groups of connecting frames 504 are fixedly connected to the lower end of the second grinding plate 502. One end of each connecting frame 504 is fixedly connected to the fixing ring 4. A plurality of groups of scrapers 505 for cleaning are fixedly connected to the lower end of the first grinding plate 501. A material returning assembly 7 is fixedly installed in the middle of the second grinding plate 502.

[0034] Further: Through the cooperation of the servo motor 1401 in the driving assembly 14 with the first rotating shaft 1402 and the second gear 1403, the first grinding plate 501 in the grinding assembly 5 is driven to rotate. By the rotation of the first grinding plate 501 and the fixation of the second grinding plate 502, the copper powder is ground. The ground copper powder finally falls on the upper plate 601 and the screen 603, and some also falls on the connecting frames 504. It is cleaned by the scrapers 505 fixedly installed under the first grinding plate 501, and then also falls on the screen 602.

[0035] Specifically, in this embodiment, the material returning assembly 7 includes a first fixing cylinder 702 fixedly installed in the middle of the second grinding plate 502. A material returning blade 701 fixedly installed on the second rotating shaft 1407 is arranged inside the first fixing cylinder 702. A plurality of groups of first feeding ports 703 are opened at the lower end of the first fixing cylinder 702, and the lower end of the first fixing cylinder 702 is fixedly connected to the screening assembly 6.

[0036] Specifically, in this embodiment, the screening assembly 6 includes a lower plate 602 fixedly connected to the lower end of the first fixing cylinder 702. An upper plate 601 fixedly connected to the fixing ring 4 is arranged above the lower plate 602. A screen 603 is fixedly connected between the upper plate 601 and the lower plate 602.

[0037] Further: Through the cooperation of the knocking member, the rotating motor 8 can drive the knocking wheel 802 to rotate through the rotating shaft 801, so that the knocking wheel 802 can periodically knock on the upper plate 601 in the screening assembly 6, thereby realizing periodic knocking on the screen 602, screening the ground copper powder, and effectively preventing the copper powder from getting stuck in the holes of the screen 602. At the same time, the servo motor 1401 in the driving assembly 14 cooperates with the driving wheel 1404, the transmission belt 1405, the driven wheel 1406 and the second rotating shaft 1407, so as to synchronously drive the material returning blade 701 to rotate, bringing the unqualified copper powder on the screen 602 back to the inlet of the grinding assembly 5 for secondary grinding, improving the quality of the final copper powder, and enhancing the production efficiency and output stability.

[0038] Specifically, in this embodiment, the upper end surface of the fixed block 9 is inclined towards the middle, and the lowest point is provided with a feeding component 10. A through groove 901 is provided between the feeding component 10 and the fixed block 9. A plurality of drainage channels 902 opened in the fixed block 9 are arranged inside the through groove 901. Drainage plates 16 are fixedly connected to the entrances of the drainage channels 902 respectively. A permeable membrane 17 is coated on the surface of the drainage plates 16. An annular water groove 904 is opened at the bottom of the fixed block 9. A plurality of slag discharge grooves 903 are opened on the inclined surface of the fixed block 9. The lower ends of the slag discharge grooves 903 communicate with the drainage channels 902, and the drainage channels 902 all communicate with the annular water groove 904. A slag discharge pipe 905 communicating with the annular water groove 904 is fixedly installed at the left end of the working box 1. An electromagnetic valve 906 is fixedly installed on the slag discharge pipe 905.

[0039] Specifically, in this embodiment, the feeding component 10 includes a second fixed cylinder 1002 fixedly installed on the fixed block 9. A feeding blade 1001 fixedly installed on a second rotating shaft 1407 is arranged inside the second fixed cylinder 1002. A stirring blade 1003 fixedly installed on the second rotating shaft 1407 is arranged above the feeding blade 1001. A plurality of second feeding ports 1004 are opened at the position of the second fixed cylinder 1002 corresponding to the through groove 901. The lower end of the second fixed cylinder 1002 penetrates through the fixed block 9 and communicates with the discharging component 13.

[0040] Furthermore: After the ground copper powder is screened, the qualified products fall on the fixed block 9. Through the inclined surface of the fixed block 9, the copper powder finally accumulates at the entrance of the second fixed cylinder 1002 in the feeding component 10. Subsequently, water is injected into the working box 1 through the water inlet pipe 11, and the water level sensor 1101 is used to prevent overfilling. At the same time, the second rotating shaft 1407 in the driving component 14 synchronously drives the blades in the feeding component 10 to drive the copper powder at the entrance upward and sprinkle it outward, thereby preventing incomplete cleaning caused by the accumulation of copper powder. At the same time, the upper stirring blade 1003 will stir the water flow, and the fine copper powder chips will be separated from the copper powder under the action of centrifugal force and finally fall from the slag discharge groove 903. After the cleaning is completed, the electromagnetic valve 906 is opened, and water is drained through the drainage channel 902, so that the water flow takes away the copper powder chips and dust together, realizing the cleaning of the ground copper powder.

[0041] Specifically, in this embodiment, the discharging component 13 includes a third fixed cylinder 1301 communicating with the lower end of the second fixed cylinder 1002. A driving motor 1302 fixedly installed at the bottom of the working box 1 is arranged on the left side of the third fixed cylinder 1301. The output shaft of the driving motor 1302 is fixedly connected to a discharging shaft 1303. The right end of the discharging shaft 1303 penetrates through the inside of the third fixed cylinder 1301 and is fixedly connected to a discharging blade 1304.

[0042] Specifically, in this embodiment, a water level sensor 1101 fixedly installed on the inner wall of the working box 1 is provided on the lower side of the water inlet pipe 11. The drying assembly 12 includes an air heater 1201 fixedly installed on the working box 1. A blower 1202 is fixedly installed on the air heater 1201. The input pipe of the blower 1202 is communicated with the air heater 1201. An air duct 1203 is fixedly installed on the output pipe of the blower 1202. The output end of the air duct 1203 penetrates into the interior of the working box 1, and a one-way valve 1204 is fixedly installed on the air duct 1203. A temperature sensor 1205 is fixedly installed on the inner wall of the working box 1.

[0043] Furthermore, when drying the washed copper powder, the hot air in the air heater 1201 is introduced into the working box 1 by the blower 1202, thereby increasing the temperature inside the working box 1. The drying temperature can be monitored by the temperature sensor 1205 to avoid excessive temperature. At the same time, the rotating shaft two 1407 in the driving assembly 14 synchronously drives the blades in the feeding assembly 10 to drive the copper powder at the inlet upward and sprinkle it outward, thereby preventing the copper powder from being incompletely dried due to accumulation, effectively improving the drying efficiency of the copper powder. After drying for a period of time, the servo motor 1401 in the driving assembly 14 rotates in reverse, so that the feeding assembly 10 feeds downward, and the dried copper powder is fed into the discharging assembly 13, thereby conveying the copper powder out.

[0044] The working principle of the present invention is as follows: Workers feed the copper powder raw material into the grinding assembly 5 through the feed hopper 301. Subsequently, the servo motor 1401 in the driving assembly 14 is started, so that the servo motor 1401 drives the rotating shaft one 1402. The rotating shaft one 1402 then drives the gear two 1403 and the driving wheel 1404. The gear two 1403 drives the grinding assembly 5 through meshing, and the driving wheel 1404 drives the transmission of the transmission belt 1405, thereby driving the driven wheel 1406. The driven wheel 1406 then drives the rotating shaft two 1407, and the rotating shaft two 1407 then drives the return material assembly 7 and the feeding assembly 10 to rotate synchronously:

[0045] By means of the servo motor 1401 in the driving assembly 14 cooperating with the first rotating shaft 1402 and the second gear 1403, the first grinding plate 501 in the grinding assembly 5 is driven to rotate. With the rotation of the first grinding plate 501 and the fixation of the second grinding plate 502, the grinding treatment of the copper powder is realized. The ground copper powder finally falls on the upper plate 601 and the sieve 603. The rotating motor 8 can drive the knocking wheel 802 to rotate through the rotating shaft 801, so that the knocking wheel 802 can periodically knock on the upper plate 601 in the screening assembly 6, thereby realizing the periodic knocking on the sieve 602, screening the ground copper powder, and effectively preventing the copper powder from getting stuck in the holes of the sieve 602. At the same time, the servo motor 1401 in the driving assembly 14 cooperates with the driving wheel 1404, the transmission belt 1405, the driven wheel 1406 and the second rotating shaft 1407 to synchronously drive the return blade 701 to rotate, bringing back the unqualified copper powder on the sieve 602 to the inlet of the grinding assembly 5 for secondary grinding, improving the quality of the final copper powder, and enhancing the production efficiency and the stability of the output.

[0046] After the ground copper powder is screened, the qualified products fall on the fixed block 9. Through the inclined surface of the fixed block 9, the copper powder finally accumulates at the inlet of the second fixed cylinder 1002 in the material conveying assembly 10. Subsequently, water is injected into the working box 1 through the water inlet pipe 11, and the water level sensor 1101 is used to prevent overfilling. At the same time, the second rotating shaft 1407 in the driving assembly 14 synchronously drives the blades in the material conveying assembly 10 to drive the copper powder at the inlet upward and sprinkle it outward, thus preventing the copper powder from being incompletely cleaned due to accumulation. At the same time, the stirring blades 1003 on the upper side will stir the water flow, and the fine copper powder debris will be separated from the copper powder due to the action of centrifugal force and finally fall from the slag discharge groove 903. After the cleaning is completed, the solenoid valve 906 is opened to drain water through the drainage channel 902, so that the water flow takes away the copper powder debris and dust together, realizing the cleaning of the ground copper powder.

[0047] Furthermore, when drying the cleaned copper powder, hot air in the air heater 1201 is introduced into the working box 1 by the blower 1202, thereby increasing the temperature in the working box 1. The temperature sensor 1205 can monitor the drying temperature to avoid excessive temperature. At the same time, the second rotating shaft 1407 in the driving assembly 14 synchronously drives the blades in the material conveying assembly 10 to drive the copper powder at the inlet upward and sprinkle it outward, thus preventing the copper powder from being incompletely dried due to accumulation, effectively improving the drying efficiency of the copper powder. After drying for a period of time, the servo motor 1401 in the driving assembly 14 rotates in reverse, so that the material conveying assembly 10 feeds downward and transports the dried copper powder into the discharging assembly 13, thereby transporting the copper powder out.

[0048] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated device for grinding and drying silver-coated copper powder, characterized in that, It includes a working box (1), an opening (2) is provided at the top of the working box (1), a cover body (3) fixedly installed on the working box (1) is provided above the opening (2), a feed hopper (301) is fixedly installed on the cover body (3), the upper inner wall of the working box (1) is fixedly connected with a fixing ring (4), a grinding assembly (5) for grinding is provided at the upper end of the fixing ring (4), a screening assembly (6) for filtering is provided at the lower end of the fixing ring (4), a rotating motor (8) is fixedly installed at the right end of the fixing ring (4), the output shaft of the rotating motor (8) is fixedly connected with a rotating shaft (801), a knocking wheel (802) is fixedly connected to the lower end of the rotating shaft (801), a material return assembly (7) is provided between the grinding assembly (5) and the screening assembly (6), a fixing block (9) fixedly connected to the working box (1) is provided below the screening assembly (6), a material conveying assembly (10) is provided in the middle of the fixing block (9), a water inlet pipe (11) for discharging water is fixedly installed at the left end of the working box (1), a drying assembly (12) for drying is fixedly installed at the right end of the working box (1), a discharging assembly (13) is provided at the bottom of the working box (1), a fixing frame (15) is fixedly connected to the upper end of the working box (1), and a driving assembly (14) is fixedly installed on the fixing frame (15).

2. An integrated device for grinding and drying silver-coated copper powder according to claim 1, characterized in that: The driving assembly (14) includes a servo motor (1401) fixedly installed on the fixing frame (15), the output shaft of the servo motor (1401) is fixedly connected with a first rotating shaft (1402), the lower end of the first rotating shaft (1402) penetrates through the top of the working box (1) and is fixedly connected with a second gear (1403), the second gear (1403) is meshed and connected with the grinding assembly (5), the upper end of the first rotating shaft (1402) is fixedly connected with a driving wheel (1404), a transmission belt (1405) is sleeved on the driving wheel (1404), a driven wheel (1406) is sleeved on the left side of the transmission belt (1405), a second rotating shaft (1407) is fixedly connected to the driven wheel (1406), and the lower ends of the second rotating shaft (1407) are respectively fixedly connected with the material return assembly (7) and the material conveying assembly (10).

3. An integrated device for grinding and drying silver-coated copper powder according to claim 2, characterized in that: The grinding assembly (5) includes a first gear (503) meshed and connected with the second gear (1403), a first grinding plate (501) is fixedly connected to the first gear (503), the upper and lower ends of the first grinding plate (501) are respectively rotationally connected with the working box (1) and the fixing ring (4), a second grinding plate (502) is arranged inside the first grinding plate (501), a plurality of groups of connecting frames (504) are fixedly connected to the lower end of the second grinding plate (502), one ends of the connecting frames (504) are all fixedly connected with the fixing ring (4), a plurality of groups of scraping plates (505) for cleaning are fixedly connected to the lower end of the first grinding plate (501), and the material return assembly (7) is fixedly installed in the middle of the second grinding plate (502).

4. An integrated device for grinding and drying silver-coated copper powder according to claim 3, characterized in that: The return material component (7) includes a first fixed cylinder (702) fixedly installed in the middle of the second grinding plate (502). A return material blade (701) fixedly installed on the second rotating shaft (1407) is arranged inside the first fixed cylinder (702). A number of groups of first feed ports (703) are formed at the lower end of the first fixed cylinder (702), and the lower end of the first fixed cylinder (702) is fixedly connected to the screening component (6).

5. An integrated device for grinding and drying silver-coated copper powder according to claim 4, characterized in that: The screening component (6) includes a lower plate (602) fixedly connected to the lower end of the first fixed cylinder (702). An upper plate (601) fixedly connected to the fixed ring (4) is arranged on the upper side of the lower plate (602). A screen (603) is fixedly connected between the upper plate (601) and the lower plate (602).

6. An integrated device for grinding and drying silver-coated copper powder according to claim 1, characterized in that: The upper end surface of the fixed block (9) is inclined towards the middle, and a material conveying component (10) is arranged at the lowest point. A through groove (901) is arranged between the material conveying component (10) and the fixed block (9). A number of groups of drainage channels (902) opened inside the fixed block (9) are arranged inside the through groove (901). Drainage plates (16) are fixedly connected to the entrances of the drainage channels (902) respectively. A water permeable membrane (17) is coated on the surface of each drainage plate (16). An annular water tank (904) is formed at the bottom of the fixed block (9). A number of groups of slag discharge grooves (903) are formed on the inclined surface of the fixed block (9). The lower ends of the slag discharge grooves (903) are communicated with the drainage channels (902), and the drainage channels (902) are all communicated with the annular water tank (904). A slag discharge pipe (905) communicated with the annular water tank (904) is fixedly installed at the left end of the working box (1). A solenoid valve (906) is fixedly installed on the slag discharge pipe (905).

7. An integrated device for grinding and drying silver-coated copper powder according to claim 6, characterized in that: The material conveying component (10) includes a second fixed cylinder (1002) fixedly installed on the fixed block (9). A material conveying blade (1001) fixedly installed on the second rotating shaft (1407) is arranged inside the second fixed cylinder (1002). A stirring blade (1003) fixedly installed on the second rotating shaft (1407) is arranged above the material conveying blade (1001). A number of groups of second feed ports (1004) are formed at the position of the second fixed cylinder (1002) corresponding to the through groove (901). The lower end of the second fixed cylinder (1002) penetrates through the fixed block (9) and is communicated with the discharging component (13).

8. An integrated device for grinding and drying silver-coated copper powder according to claim 7, characterized in that: The discharging component (13) includes a third fixed cylinder (1301) communicated with the lower end of the second fixed cylinder (1002). A driving motor (1302) fixedly installed at the bottom of the working box (1) is arranged on the left side of the third fixed cylinder (1301). An output shaft of the driving motor (1302) is fixedly connected to a discharging shaft (1303). The right end of the discharging shaft (1303) penetrates through the inside of the third fixed cylinder (1301) and is fixedly connected to a discharging blade (1304).

9. An integrated device for grinding and drying silver-coated copper powder according to claim 1, characterized in that: A water level sensor (1101) fixedly installed on the inner wall of the working box (1) is provided on the lower side of the water inlet pipe (11). The drying assembly (12) includes an air heater (1201) fixedly installed on the working box (1). A blower (1202) is fixedly installed on the air heater (1201). The input pipe of the blower (1202) is communicated with the air heater (1201). An air duct (1203) is fixedly installed on the output pipe of the blower (1202). The output end of the air duct (1203) penetrates into the interior of the working box (1), and a one-way valve (1204) is fixedly installed on the air duct (1203). A temperature sensor (1205) is fixedly installed on the inner wall of the working box (1).

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