Silver powder reaction device and silver powder production system

Abstract

The invention belongs to the technical field of silver powder synthesis, and particularly relates to a silver powder reaction device and a silver powder production system.The silver powder reaction device comprises a tank body, a lifting transmission mechanism is arranged at the top of the tank body, a hot air mechanism is arranged on the rear side of the tank body, a stirring and filtering mechanism is arranged in the tank body, and a solution circulating mechanism is arranged on the outer side of the stirring and filtering mechanism; a material control mechanism is arranged below the tank body; a first liquid inlet, a second liquid inlet, a third liquid inlet and a fourth liquid inlet are formed in the top of the tank body, and a liquid outlet is formed in the bottom of the tank body. The silver powder reaction device has the beneficial effects that the silver powder reaction device can achieve integration of silver powder reaction, filtering, cleaning and drying, the silver powder synthesis steps are simplified, and the silver powder synthesis efficiency is improved; a plurality of solution outlets are formed in the U-shaped pipe, and the diameters of the plurality of solution outlets are sequentially increased from top to bottom, so that the silver nitrate solution can be uniformly dispersed; meanwhile, the anti-blocking assembly rotates at the solution outlet to prevent blocking, and it is guaranteed that the silver nitrate solution is added at a constant speed.

Description

Technical Field

[0001] The invention belongs to the technical field of silver powder synthesis, and in particular relates to a silver powder reaction device and a silver powder production system. Background Art

[0002] Metallic silver has excellent electrical and thermal conductivity and is widely used in conductive pastes (electronics, photovoltaics), high and low temperature conductive adhesives, and electromagnetic shielding. As the main conductive filler, silver powder accounts for 40% to 90% of the content and is currently the most widely used and largest amount of metal powder material. At present, the main methods for preparing silver powder at home and abroad are ball milling, atomization, electrochemical deposition, sol-gel, liquid phase reduction, etc. Among them, the liquid phase reduction method has a simple operation process, small investment, high output, and low loss, making it one of the most promising preparation methods. The liquid phase reduction method prepares micron-sized silver powder with a smaller particle size by adding silver nitrate solution and reducing agent solution in sequence or simultaneously.

[0003] The silver nitrate solution in the existing silver powder reaction device is unevenly distributed, resulting in the agglomeration of the synthesized silver powder, resulting in poor dispersibility. At the same time, due to the strong pressure at the bottom of the solution, on the one hand, the flow rate of the silver nitrate solution at the bottom outlet is small, and on the other hand, the bottom outlet of the silver nitrate solution is easily blocked, which makes the addition rate of the silver nitrate solution unstable, affecting the stability between batches of silver powder. In addition, after the silver powder reaction is completed, it needs to be cleaned, surface treated and dried many times. The silver powder needs to be repeatedly transported between the reaction device, the cleaning device and the drying device, which is complicated to operate and has high labor and time costs. In summary, the existing silver powder reaction device and silver powder production system have the problems of poor silver powder dispersibility, low stability between silver powder batches, complicated operation, and high labor and time costs. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a silver powder reaction device and a silver powder production system.

[0005] The present invention relates to a silver powder reaction device, comprising a tank body, wherein a lifting transmission mechanism is arranged on the top of the tank body, a hot air mechanism is arranged on the rear side of the tank body, a stirring and filtering mechanism is arranged inside the tank body, a solution circulation mechanism is arranged on the outside of the stirring and filtering mechanism, a material port is arranged on the periphery of the tank body, and a material control mechanism is arranged on the outside of the material port; liquid inlet 1, liquid inlet 2, liquid inlet 3 and liquid inlet 4 are arranged on the top of the tank body, and a liquid outlet is arranged on the bottom of the tank body.

[0006] Preferably, the lifting transmission mechanism comprises a lifting assembly, the bottom of the lifting assembly is fixedly connected to the tank body, and the side of the lifting assembly is fixedly connected to a transmission assembly; The lifting assembly comprises a linear telescopic device 1, the bottom of which is fixedly connected to the tank body, and the top of which is fixedly connected to a connecting plate; The transmission assembly includes motor 1, a sliding frame is slidably connected to the outer side of motor 1, the top of the sliding frame is fixedly connected to motor 2, the top of motor 2 is fixedly connected to the bottom of a connecting plate, the output shaft of motor 2 is fixedly connected to transmission plate 1, transmission plate 1 is hinged to transmission plate 2, and the side of transmission plate 2 away from transmission plate 1 is hinged to the side of motor 1.

[0007] Preferably, the stirring and filtering mechanism comprises a stirring paddle, the upper part of the stirring paddle passes through the top of the tank body and is fixedly connected to the output shaft of motor 1, and the lower part of the stirring paddle is rotatably connected to a filter plate.

[0008] Preferably, the solution circulation mechanism comprises arc tube 1, arc tube 2, arc tube 3 and arc tube 4, the arc tube 1 is provided with a one-way valve 1, and the arc tube 1 is connected with the liquid inlet 1 through a pipeline; The arc tube 1 and the arc tube 2, the arc tube 2 and the arc tube 3, the arc tube 3 and the arc tube 4, and the arc tube 4 and the arc tube 1 are all connected through a U-shaped tube. A plurality of solution outlets are provided on the side of the U-shaped tube away from the inner wall of the tank body. The diameters of the plurality of solution outlets increase from top to bottom, and anti-blocking components are provided in the plurality of solution outlets.

[0009] Preferably, the anti-blocking component comprises a rotating shaft, a plurality of rotating blades are fixedly connected to the outer side of the rotating shaft, and a side of the rotating shaft away from the solution outlet is rotatably connected to the inner wall of the U-shaped tube.

[0010] Preferably, the material control mechanism comprises a pushing component and an outlet control component, and the pushing component and the outlet control component are respectively arranged on two opposite sides of the tank body; The pushing assembly includes two linear telescopic devices 2, the two linear telescopic devices 2 are fixedly connected to the outer wall of the tank body through an L-shaped connecting frame, the push rods of the two linear telescopic devices 2 pass through and are slidably connected to the tank body, and the push rods of the two linear telescopic devices 2 are fixedly connected with an arc-shaped pushing member; The outlet control assembly includes a U-shaped frame, which is fixedly connected to the outer wall of the tank body. A linear telescopic device three is fixedly connected to the top of the U-shaped frame, and two limit plates with L-shaped cross-sections are fixedly connected to the bottom of the U-shaped frame. The two limit plates are fixedly connected to the tank body, and sliding grooves are formed between the two limit plates and the tank body. Arc-shaped baffles are slidably connected in the two sliding grooves, and a push rod of the linear telescopic device three passes through the U-shaped frame and is fixedly connected above the arc-shaped baffle.

[0011] Preferably, the two arc-shaped pushing members each include an arc-shaped plate, the outer sides of the two arc-shaped plates are slidably connected with an arc-shaped plate sleeve, the inner sides of the two arc-shaped plate sleeves away from the arc-shaped plates are fixedly connected with a spring, the outer sides of the two arc-shaped plate sleeves away from the arc-shaped plates are fixedly connected with a rubber push plate, and the two rubber push plates fit each other.

[0012] Preferably, the hot air mechanism includes a fan, the air outlet of the fan is connected to an air supply pipe, a heater is provided on the air supply pipe, the air supply pipe passes through the tank body and is connected to arc tube four, and a one-way valve two is provided on the side of the air supply pipe close to arc tube four.

[0013] The present invention also relates to a silver powder production system, comprising the silver powder reaction device, and also comprising a silver nitrate solution storage tank, a reducing agent solution storage tank, a surface treatment solution storage tank, a methanol storage tank and a purified water storage tank; The outlet of the silver nitrate solution storage tank is connected to the liquid inlet 1 of the silver powder reaction device through a pipe 1, a delivery pump 1 is provided on the side of the pipe 1 close to the silver nitrate solution storage tank, and a reflux device 1 is provided on the pipe 1 between the delivery pump 1 and the silver powder reaction device; the outlet of the reducing agent solution storage tank is connected to the liquid inlet 2 of the silver powder reaction device through a pipe 2, a delivery pump 2 is provided on the side of the pipe 2 close to the reducing agent solution storage tank, and a reflux device 2 is provided on the pipe 2 between the delivery pump 2 and the silver powder reaction device; The outlet of the surface treatment liquid storage tank is connected to the liquid inlet 3 of the silver powder reaction device through a pipeline 3, and a delivery pump 3 is provided on the side of the pipeline 3 close to the surface treatment liquid storage tank. The outlet of the methanol storage tank is connected to the liquid inlet 4 of the silver powder reaction device through a pipeline 4, and a delivery pump 4 is provided on the side of the pipeline 4 close to the methanol storage tank. The outlet of the purified water storage tank is connected to pipeline 5, and pipeline 5 is connected to pipeline 6 and pipeline 7 respectively. Pipeline 6 is connected to pipeline 1 between delivery pump 1 and reflux device 1, and delivery pump 5 is arranged on pipeline 6. Pipeline 7 is connected to pipeline 2 between delivery pump 2 and reflux device 2, and delivery pump 6 is arranged on pipeline 7.

[0014] Preferably, the reflux device 1 comprises a reflux pipe 1, both sides of the reflux pipe 1 are connected to a pipeline 1, and a reflux pump 1 is arranged on the reflux pipe 1; The second reflux device comprises a second reflux pipe, both sides of which are connected to a second pipeline, and a second reflux pump is arranged on the second reflux pipe.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are: Compared with the prior art, the silver powder reaction device and the silver powder production system of the present invention are used. (1) The silver powder reaction device can realize the integration of silver powder reaction, filtration, cleaning and drying, which helps to save space, simplify the silver powder synthesis steps, save time costs, and improve the production efficiency of silver powder; (2) The U-shaped tube is provided with a plurality of solution outlets, the diameters of which increase from top to bottom, thereby ensuring that the silver nitrate solution can be evenly dispersed, thereby improving the dispersibility of the silver powder; (3) The silver nitrate solution circulates in the solution circulation mechanism, driving the anti-blocking component to rotate at the solution outlet to prevent blockage, thereby ensuring the uniform addition of the silver nitrate solution and improving the stability of the synthetic silver powder batches; (4) By adjusting the reflux device, the flow rates of the silver nitrate solution and the reducing agent solution can be further ensured to be stable during the synthesis, making the reaction process easier to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following briefly introduces the drawings required for describing the embodiment. Figure 1 A schematic diagram of the silver powder reaction device provided in Example 1; Figure 2 This is an internal structure diagram of the silver powder reaction device provided in Example 1; Figure 3 Provided for Example 1 Figure 2 A magnified image of point A; Figure 4 Provided for Example 1 Figure 2 A magnified view of point B; Figure 5 A rear view of the silver powder reaction device provided in Example 1; Figure 6 This is a schematic diagram of the silver powder production system provided in Example 1.

[0017] Description of reference numerals: 1. Tank body, 101. Liquid inlet 1, 102. Liquid inlet 2, 103. Liquid inlet 3, 104. Liquid inlet 4, 105. Discharge port, 106. Liquid discharge port; 2. Lifting transmission mechanism, 201. Lifting assembly, 202. Transmission assembly, 203. Linear telescopic device 1, 204. Connecting plate, 205. Motor 1, 206. Sliding frame, 207. Motor 2, 208. Transmission plate 1, 209. Transmission plate 2; 3. hot air mechanism, 301. fan, 302. heater, 303. air supply pipe, 304. check valve 2; 4. stirring and filtering mechanism, 401. stirring paddle, 402. filtering plate; 5. Solution circulation mechanism, 501. Arc tube 1, 502. Arc tube 2, 503. Arc tube 3, 504. Arc tube 4, 505. One-way valve 1, 506. U-shaped tube, 507. Solution outlet, 508. Anti-blocking component, 509. Rotating shaft, 510. Rotating blade; 6. Material control mechanism, 601. Pushing assembly, 602. Exit control assembly, 603. Linear telescopic device II, 604. L-shaped connecting frame, 605. Arc-shaped pushing member, 606. U-shaped frame, 607. Linear telescopic device III, 608. Limiting plate, 609. Sliding groove, 610. Arc-shaped baffle, 611. Arc-shaped plate, 612. Arc-shaped plate sleeve, 613. Rubber push plate; 7. Silver nitrate solution storage tank; 8. Reducing agent solution storage tank; 9. Surface treatment liquid storage tank; 10. Methanol storage tank; 11. Purified water storage tank; 12. Pipeline 1; 13. Delivery pump 1; 15. Pipeline 2; 16. Delivery pump 2; 18. Pipeline 3; 19. Delivery pump 3; 20. Pipeline 4; 21. Delivery pump 4; 22. Pipeline 5; 23. Pipeline 6; 24. Pipeline 7; 25. Delivery pump 5; 26. Delivery pump 6; 14. A reflux device, 141. A reflux pipe, 142. A reflux pump; 17. Reflux device 2, 171. Reflux pipe 2, 172. Reflux pump 2. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Example 1 like Figure 1-Figure 5 A silver powder reaction device is shown, comprising a tank body 1, a lifting transmission mechanism 2 is arranged on the top of the tank body 1, a hot air mechanism 3 is arranged on the rear side of the tank body 1, a stirring and filtering mechanism 4 is arranged inside the tank body 1, a solution circulation mechanism 5 is arranged on the outside of the stirring and filtering mechanism 4, a material port is opened on the periphery of the tank body 1, and a material control mechanism 6 is arranged on the outside of the material port; a liquid inlet 101, a liquid inlet 2 102, a liquid inlet 3 103 and a liquid inlet 4 104 are opened on the top of the tank body 1, and a liquid outlet 106 is opened at the bottom of the tank body 1.

[0021] like Figure 1-Figure 5 As shown, the lifting transmission mechanism 2 includes a lifting component 201 , the bottom of the lifting component 201 is fixedly connected to the tank body 1 , and the side of the lifting component 201 is fixedly connected to the transmission component 202 .

[0022] like Figure 1-Figure 5 As shown, the lifting assembly includes a linear telescopic device 203 , the bottom of the linear telescopic device 203 is fixedly connected to the tank body 1 , and the top of the linear telescopic device 203 is fixedly connected with a connecting plate 204 .

[0023] like Figure 1-Figure 5 As shown, the transmission assembly 202 includes a motor 205, a sliding frame 206 is slidably connected to the outer side of the motor 205, a motor 207 is fixedly connected to the top of the sliding frame 206, the top of the motor 207 is fixedly connected to the bottom of the connecting plate 204, the output shaft of the motor 207 is fixedly connected to a transmission plate 1 208, the transmission plate 1 208 is hinged to a transmission plate 209, and the side of the transmission plate 209 away from the transmission plate 1 208 is hinged to the side of the motor 1 205.

[0024] like Figure 1-Figure 5 As shown, the stirring and filtering mechanism 4 includes a stirring paddle 401, the upper part of the stirring paddle 401 passes through the top of the tank body 1 and is fixedly connected to the output shaft of the motor 205, and the lower part of the stirring paddle 401 is rotatably connected to a filter plate 402.

[0025] like Figure 1-Figure 5 As shown, the solution circulation mechanism 5 includes an arc tube 1 501, an arc tube 2 502, an arc tube 3 503 and an arc tube 4 504. A one-way valve 1 505 is provided on the arc tube 1 501, and the arc tube 1 501 is connected to the liquid inlet 101 through a pipeline.

[0026] like Figure 1-Figure 5 As shown, arc tube 1 501 and arc tube 2 502, arc tube 2 502 and arc tube 3 503, arc tube 3 503 and arc tube 4 504, and arc tube 4 504 and arc tube 1 501 are all connected through a U-shaped tube 506, and a plurality of solution outlets 507 are provided on a side of the U-shaped tube 506 away from the inner wall of the tank body 1, and the diameters of the plurality of solution outlets 507 increase from top to bottom, and anti-blocking components 508 are provided in the plurality of solution outlets 507.

[0027] like Figure 1-Figure 5 As shown, the anti-blocking component 508 includes a rotating shaft 509 , and a plurality of rotating blades 510 are fixedly connected to the outer side of the rotating shaft 509 . The side of the rotating shaft 509 away from the solution outlet 507 is rotatably connected to the inner wall of the U-shaped tube 506 .

[0028] like Figure 1-Figure 5 As shown, the material control mechanism 6 includes a pushing component 601 and an outlet control component 602 , and the pushing component 601 and the outlet control component 602 are respectively arranged on two opposite sides of the tank body 1 .

[0029] like Figure 1-Figure 5As shown, the pushing assembly 601 includes two linear telescopic devices 603, and the two linear telescopic devices 603 are fixedly connected to the outer wall of the tank body 1 through an L-shaped connecting frame 604. The push rods of the two linear telescopic devices 603 pass through and are slidably connected to the tank body 1. The push rods of the two linear telescopic devices 603 are fixedly connected with an arc-shaped pushing member 605.

[0030] like Figure 1-Figure 5 As shown, the outlet control assembly 602 includes a U-shaped frame 606, which is fixedly connected to the outer wall of the tank body 1, and a linear telescopic device 3 607 is fixedly connected to the top of the U-shaped frame 606, and two limit plates 608 with an L-shaped cross-section are fixedly connected to the bottom of the U-shaped frame 606, and the two limit plates 608 are fixedly connected to the tank body 1, and sliding grooves 609 are formed between the two limit plates 608 and the tank body 1, and arc-shaped baffles 610 are slidably connected in the two sliding grooves 609, and the push rod of the linear telescopic device 3 607 passes through the U-shaped frame 606 and is fixedly connected to the top of the arc-shaped baffle 610.

[0031] like Figure 1-Figure 5 As shown, the two arc-shaped pushing members 605 each include an arc-shaped plate 611, the outer sides of the two arc-shaped plates 611 are slidably connected with an arc-shaped plate sleeve 612, the inner sides of the two arc-shaped plate sleeves 612 away from the arc-shaped plate 611 are fixedly connected with a spring, the outer sides of the two arc-shaped plate sleeves 612 away from the arc-shaped plate 611 are fixedly connected with a rubber push plate 613, and the two rubber push plates 613 fit each other.

[0032] like Figure 1-Figure 5 As shown, the hot air mechanism 3 includes a fan 301, the air outlet of the fan 301 is connected to an air supply pipe 303, a heater 302 is arranged on the air supply pipe 303, the air supply pipe 303 passes through the tank body 1 and is connected with the arc tube four 504, and a one-way valve two 304 is arranged on the side of the air supply pipe 303 close to the arc tube four 504.

[0033] like Figure 6 The silver powder production system shown includes the above-mentioned silver powder reaction device, and also includes a silver nitrate solution storage tank 7, a reducing agent solution storage tank 8, a surface treatment solution storage tank 9, a methanol storage tank 10 and a purified water storage tank 11.

[0034] like Figure 6As shown, the outlet of the silver nitrate solution storage tank 7 is connected to the liquid inlet 101 of the silver powder reaction device through a pipe 12, a delivery pump 13 is provided on the side of the pipe 12 close to the silver nitrate solution storage tank 7, and a reflux device 14 is provided on the pipe 12 between the delivery pump 13 and the silver powder reaction device. The outlet of the reducing agent solution storage tank 8 is connected to the liquid inlet 102 of the silver powder reaction device through a pipe 2 15, a delivery pump 2 16 is provided on the side of the pipe 2 15 close to the reducing agent solution storage tank 8, and a reflux device 2 17 is provided on the pipe 2 15 between the delivery pump 2 16 and the silver powder reaction device.

[0035] like Figure 6 As shown, the outlet of the surface treatment liquid storage tank 9 is connected to the liquid inlet three 103 of the silver powder reaction device through a pipe three 18, and a delivery pump three 19 is provided on the side of the pipe three 18 close to the surface treatment liquid storage tank 9. The outlet of the methanol storage tank 10 is connected to the liquid inlet four 104 of the silver powder reaction device through a pipe four 20, and a delivery pump four 21 is provided on the side of the pipe four 20 close to the methanol storage tank 10.

[0036] like Figure 6 As shown, the outlet of the purified water storage tank 11 is connected to a pipeline 5 22, which is respectively connected to a pipeline 6 23 and a pipeline 7 24, the pipeline 6 23 is connected to the pipeline 12 between the delivery pump 1 13 and the reflux device 1 14, the pipeline 6 23 is provided with a delivery pump 5 25, the pipeline 7 24 is connected to the pipeline 2 15 between the delivery pump 2 16 and the reflux device 2 17, and the pipeline 7 24 is provided with a delivery pump 6 26.

[0037] like Figure 6 As shown, the reflux device 14 includes a reflux pipe 141 , both sides of which are connected to the pipeline 12 , and a reflux pump 142 is provided on the reflux pipe 141 .

[0038] like Figure 6 As shown, the reflux device 17 includes a reflux pipe 171 , both sides of which are connected to the pipeline 15 , and a reflux pump 172 is provided on the reflux pipe 171 .

[0039] The lifting transmission mechanism 2, the hot air mechanism 3, the stirring and filtering mechanism 4, the solution circulation mechanism 5 and the material control mechanism 6 are all externally connected to the PLC controller.

[0040] The linear telescopic device 1 203, the linear telescopic device 2 603 and the linear telescopic device 3 607 are all cylinders, hydraulic cylinders or electric telescopic rods.

[0041] The silver powder production system is prepared according to the following steps: (1) Synthetic silver powder: Start the delivery pump 3 19 to deliver the surface treatment liquid from the surface treatment liquid storage tank 9 to the silver powder reaction device containing silver powder seeds; start the motor 1 205, and the silver powder reaction device starts stirring; at the same time, start the delivery pump 1 13 and the delivery pump 2 16 to continuously add the silver nitrate solution and the reducing agent solution into the silver powder reaction device for reaction (the filter plate 402 is attached to the bottom of the silver powder reaction device during the reaction).

[0042] (2) Post-processing of silver powder: After the reaction is completed, the motor 205 is turned off, the liquid outlet 106 is opened, the filter plate 402 filters the mixed material, and the filtrate is discharged from the liquid outlet 106. The motor 207 is turned on, and the filter plate 402 drives the silver powder to move up and down repeatedly to ensure that the residual liquid in the silver powder is filtered out; the liquid outlet 106 is closed, the motor 207 is turned off, the delivery pump 5 25 and the delivery pump 6 26 are turned on, and the purified water passes through the pipeline 1 12, the pipeline 2 15 and the solution circulation mechanism 5 to rinse them, and then the purified water enters the silver powder reaction device, the delivery pump 5 25 and the delivery pump 6 26 are turned off, the motor 1 205 is turned on, and the silver powder is cleaned. After the cleaning is completed, the liquid outlet 106 is controlled to discharge the waste liquid; the delivery pump 4 21 is controlled, and methanol enters the silver powder reaction device to clean the silver powder. After the cleaning is completed, the waste liquid is discharged from the liquid outlet.

[0043] (3) Silver powder surface treatment: Start the motor 1 205, and the silver powder reaction device starts to stir; control the delivery pump 4 21, add methanol to disperse the silver powder, and then control the delivery pump 3 19, add the surface treatment liquid to perform surface treatment on the silver powder, and after completion, control the liquid outlet 106 to discharge the waste liquid, control the delivery pump 4 21, and methanol enters the silver powder reaction device to clean the silver powder. After cleaning, the waste liquid is discharged from the liquid outlet 106, control the motor 2 207, and the filter plate 402 drives the silver powder to move up and down repeatedly to ensure that the residual liquid in the silver powder is filtered out; then control the hot air mechanism 3, and the hot air passes through the solution circulation mechanism 5 to dry the silver powder. After drying, control the material control mechanism 6 to collect the silver powder.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A silver powder reaction device, comprising a tank (1), characterized in that: The tank body (1) is provided with a lifting transmission mechanism (2) at the top, a hot air mechanism (3) is provided at the rear side of the tank body (1), a stirring and filtering mechanism (4) is provided inside the tank body (1), a solution circulation mechanism (5) is provided outside the stirring and filtering mechanism (4), a material inlet is provided at the periphery of the tank body (1), and a material control mechanism (6) is provided outside the material inlet; the tank body (1) is provided with a first liquid inlet (101), a second liquid inlet (102), a third liquid inlet (103) and a fourth liquid inlet (104) at the top, and a liquid outlet (106) is provided at the bottom of the tank body (1).

2. The silver powder reaction device according to claim 1, characterized in that: The lifting transmission mechanism (2) comprises a lifting component (201), the bottom of the lifting component (201) is fixedly connected to the tank body (1), and the side of the lifting component (201) is fixedly connected to a transmission component (202); The lifting assembly comprises a linear telescopic device (203), the bottom of the linear telescopic device (203) being fixedly connected to the tank body (1), and the top of the linear telescopic device (203) being fixedly connected to a connecting plate (204); The transmission assembly (202) comprises a motor 1 (205), the outer side of the motor 1 (205) is slidably connected to a sliding frame (206), the top of the sliding frame (206) is fixedly connected to a motor 2 (207), the top of the motor 2 (207) is fixedly connected to the bottom of the connecting plate (204), the output shaft of the motor 2 (207) is fixedly connected to a transmission plate 1 (208), the transmission plate 1 (208) is hinged to a transmission plate 2 (209), and the side of the transmission plate 2 (209) away from the transmission plate 1 (208) is hinged to the side of the motor 1 (205).

3. The silver powder reaction device according to claim 1, characterized in that: The stirring and filtering mechanism (4) comprises a stirring paddle (401), the upper portion of the stirring paddle (401) passing through the top of the tank body (1) and being fixedly connected to the output shaft of the motor 1 (205), and the lower portion of the stirring paddle (401) being rotatably connected to a filter plate (402).

4. The silver powder reaction device according to claim 1, characterized in that: The solution circulation mechanism (5) comprises an arc-shaped tube 1 (501), an arc-shaped tube 2 (502), an arc-shaped tube 3 (503) and an arc-shaped tube 4 (504); a one-way valve 1 (505) is provided on the arc-shaped tube 1 (501); the arc-shaped tube 1 (501) is connected to a liquid inlet 1 (101) via a pipeline; The arc tube 1 (501) and the arc tube 2 (502), the arc tube 2 (502) and the arc tube 3 (503), the arc tube 3 (503) and the arc tube 4 (504), and the arc tube 4 (504) and the arc tube 1 (501) are all connected via a U-shaped tube (506); a plurality of solution outlets (507) are provided on a side of the U-shaped tube (506) away from the inner wall of the tank body (1); the diameters of the plurality of solution outlets (507) increase from top to bottom; and an anti-blocking component (508) is provided in each of the plurality of solution outlets (507).

5. The silver powder reaction device according to claim 4, characterized in that: The anti-blocking component (508) comprises a rotating shaft (509), a plurality of rotating blades (510) are fixedly connected to the outer side of the rotating shaft (509), and a side of the rotating shaft (509) away from the solution outlet (507) is rotatably connected to the inner wall of the U-shaped tube (506).

6. The silver powder reaction device according to claim 1, characterized in that: The material control mechanism (6) comprises a pushing component (601) and an outlet control component (602), wherein the pushing component (601) and the outlet control component (602) are respectively arranged on two opposite sides of the tank body (1); The pushing assembly (601) comprises two linear telescopic devices (603) which are fixedly connected to the outer wall of the tank body (1) via an L-shaped connecting frame (604); the push rods of the two linear telescopic devices (603) pass through and are slidably connected to the tank body (1); and the push rods of the two linear telescopic devices (603) are fixedly connected to an arc-shaped pushing member (605); The outlet control assembly (602) comprises a U-shaped frame (606), wherein the U-shaped frame (606) is fixedly connected to the outer wall of the tank body (1), a linear telescopic device (607) is fixedly connected to the top of the U-shaped frame (606), and two limit plates (608) with L-shaped cross-sections are fixedly connected to the bottom of the U-shaped frame (606), both limit plates (608) are fixedly connected to the tank body (1), and sliding grooves (609) are formed between the two limit plates (608) and the tank body (1), and arc-shaped baffles (610) are slidably connected in the two sliding grooves (609), and a push rod of the linear telescopic device (607) passes through the U-shaped frame (606) and is fixedly connected to the top of the arc-shaped baffle (610).

7. The silver powder reaction device according to claim 6, characterized in that: The two arc-shaped pushing members (605) each comprise an arc-shaped plate (611), the outer sides of the two arc-shaped plates (611) are slidably connected to an arc-shaped plate sleeve (612), the inner sides of the two arc-shaped plate sleeves (612) away from the arc-shaped plate (611) are fixedly connected to a spring, the outer sides of the two arc-shaped plate sleeves (612) away from the arc-shaped plate (611) are fixedly connected to a rubber push plate (613), and the two rubber push plates (613) fit each other.

8. The silver powder reaction device according to claim 1, characterized in that: The hot air mechanism (3) comprises a fan (301), the air outlet of the fan (301) is connected to an air supply pipe (303), a heater (302) is provided on the air supply pipe (303), the air supply pipe (303) passes through the tank body (1) and is connected to the arc-shaped pipe four (504), and a one-way valve two (304) is provided on the side of the air supply pipe (303) close to the arc-shaped pipe four (504).

9. A silver powder production system, characterized in that: A silver powder reaction device comprising the silver powder reaction device according to any one of claims 1 to 8, further comprising a silver nitrate solution storage tank (7), a reducing agent solution storage tank (8), a surface treatment solution storage tank (9), a methanol storage tank (10) and a purified water storage tank (11); The outlet of the silver nitrate solution storage tank (7) is connected to the first liquid inlet (101) of the silver powder reaction device via a pipe (12); a delivery pump (13) is provided on the side of the pipe (12) close to the silver nitrate solution storage tank (7); a reflux device (14) is provided on the pipe (12) between the delivery pump (13) and the silver powder reaction device; the outlet of the reducing agent solution storage tank (8) is connected to the second liquid inlet (102) of the silver powder reaction device via a pipe (15); a delivery pump (16) is provided on the side of the pipe (15) close to the reducing agent solution storage tank (8); a reflux device (17) is provided on the pipe (15) between the delivery pump (16) and the silver powder reaction device; The outlet of the surface treatment liquid storage tank (9) is connected to the liquid inlet three (103) of the silver powder reaction device through a pipeline three (18), and a delivery pump three (19) is provided on the side of the pipeline three (18) close to the surface treatment liquid storage tank (9); the outlet of the methanol storage tank (10) is connected to the liquid inlet four (104) of the silver powder reaction device through a pipeline four (20), and a delivery pump four (21) is provided on the side of the pipeline four (20) close to the methanol storage tank (10); The outlet of the purified water storage tank (11) is connected to a pipeline five (22), and the pipeline five (22) is connected to pipeline six (23) and pipeline seven (24) respectively. The pipeline six (23) is connected to pipeline one (12) between the delivery pump one (13) and the reflux device one (14), and a delivery pump five (25) is arranged on the pipeline six (23). The pipeline seven (24) is connected to pipeline two (15) between the delivery pump two (16) and the reflux device two (17), and a delivery pump six (26) is arranged on the pipeline seven (24).

10. The silver powder production system according to claim 9, characterized in that: The reflux device 1 (14) comprises a reflux pipe 1 (141), both sides of which are in communication with the pipeline 1 (12), and a reflux pump 1 (142) is provided on the reflux pipe 1 (141); The second reflux device (17) comprises a second reflux pipe (171), both sides of which are connected to the second pipeline (15), and a second reflux pump (172) is arranged on the second reflux pipe (171).

Images