A wet synthesis method for preparing silver-clad copper

Abstract

The present invention belongs to the technical field of silver-coated copper preparation, and discloses a wet synthesis method for preparing silver-coated copper, wherein a reaction tank, a conveying mechanism, an oven, a screening mechanism and a dryer cooperate to complete corresponding processing operations, an oven is arranged at the bottom of the reaction tank, the conveying mechanism is arranged in the inner cavity of the oven, and the dryer is fixedly mounted on the inner cavity bottom surface of the oven. The present invention makes the moist silver-coated copper powder in the feeding shell fall uniformly on the upper surface of the upper support plate through the connecting piece through the material laying pipe through the oven, through the coordinated design of the oven, the conveying mechanism, the drainage cavity and the connecting pipe, and can quickly and uniformly put the silver-coated copper powder into the oven, thereby improving the efficiency of silver-coated copper powder preparation, improving the practicality of the equipment, and avoiding the problem that when the operator manually places the silver-coated copper in the oven, it is inconvenient to evenly place the moist silver-coated copper powder, and the silver-coated copper powder is easily piled up, which reduces the drying efficiency and effect, and has low practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of silver-clad copper preparation, in particular to a wet synthesis method for preparing silver-clad copper. Background Art

[0002] Silver-coated copper powder is a good high-conductive filler. It can be added to coatings, glues, inks, polymer slurries, plastics, rubber, etc. to make various conductive and electromagnetic shielding products. It is widely used in the fields of conductivity and electromagnetic shielding in various industrial sectors such as electronics, electromechanics, communications, printing, aerospace, weapons, etc. When preparing silver-coated copper powder by wet synthesis, multiple processes such as chemical replacement, waste liquid removal, and silver-coated copper powder drying are required.

[0003] In the prior art, a Chinese patent discloses a method and equipment for preparing silver-coated copper powder with low waste liquid discharge (publication number: CN108941539B), the main structure of which includes a kneading machine with a stirring paddle inside, a pickling tank with a movable bottom plate arranged above the kneading machine, a silver ammonia solution feeding spray barrel and a reducing agent solution feeding spray barrel, an upper liquid inlet and a liquid discharge port arranged at the lower part of the pickling tank, a double-blade agitator arranged in the pickling tank, a screw extrusion device connected to the outlet of the kneading machine, a suction filtration funnel connected to the outlet of the screw extrusion device and a vacuum pump for suction filtration, and also includes an oven for baking the material filtered out of the suction filtration funnel.

[0004] In actual use, the above patent can reduce the use of solvents by adopting atomization feeding and kneading coating, achieve low waste liquid discharge and reduce copper material loss, but there are still corresponding disadvantages in actual use: when drying the filtered silver-coated copper, the operator is required to manually place the silver-coated copper in the oven, which reduces the preparation efficiency of the silver-coated copper powder, and when the operator manually places the silver-coated copper in the oven, it is not convenient to place the wet silver-coated copper powder evenly, which easily causes the silver-coated copper powder to pile up together, reducing the drying efficiency and effect, and low practicality. Summary of the invention

[0005] Technical issues solved

[0006] In order to solve the problems raised in the above background technology, the present invention provides a wet synthesis method for preparing silver-coated copper, which has the advantages of convenient operation, high synthesis efficiency, good effect and good practicality. Through the coordinated design of structures such as an oven, a conveying mechanism, a drainage cavity, and a connecting pipe, the silver-coated copper powder can be quickly and evenly placed in the oven, thereby improving the efficiency of the preparation and synthesis of the silver-coated copper powder and improving the practicality of the equipment.

[0007] Technical Solution

[0008] To achieve the above object, the present invention provides the following technical solution: a wet synthesis method for preparing silver-coated copper, the specific wet synthesis method steps are as follows:

[0009] S1, after pickling treatment, the copper powder is placed in a reaction tank;

[0010] S2, transporting the silver salt solution into a reaction tank and mixing it with the pickled copper powder;

[0011] S3, inputting the reducing agent solution into the reaction tank to cause the silver salt solution to undergo a replacement reaction, so that the silver ions are coated on the surface of the copper powder;

[0012] S4, after the replacement reaction is completed, the mixed solution in the reaction tank is separated into solid and liquid through a conveying mechanism, and the separated silver-coated copper powder is evenly placed in an oven;

[0013] S5, while the silver-coated copper powder is evenly placed in the oven, the silver-coated copper powder is screened and separated by a screening mechanism;

[0014] S6. Dry silver-coated copper powder can be obtained by heating the dryer in the oven;

[0015] The operation procedures in steps S1-S6 of the above wet synthesis method require the reaction tank, conveying mechanism, oven, screening mechanism and dryer to cooperate to complete the corresponding processing operations, wherein:

[0016] An oven is arranged at the bottom of the reaction tank, a conveying mechanism is arranged in the inner cavity of the oven, and a dryer is fixedly installed on the inner cavity bottom surface of the oven; wherein a drainage cavity is opened at the upper part of the oven, the inner cavity bottom of the reaction tank is connected with the inner cavity top of the drainage cavity through a connecting pipe with a valve, and a connecting channel connected with the inner cavity of the oven is opened in the middle of the inner cavity bottom surface of the drainage cavity;

[0017] The conveying mechanism includes a material conveying shell arranged in the inner cavity of the connecting channel, a driving mechanism arranged on the bottom surface of the material conveying shell for driving the material conveying shell to move up and down and rotate, four material laying pipes are circumferentially arranged on the bottom surface of the material conveying shell, and the driving mechanism mainly includes a driving rod vertically movably installed in the middle of the bottom surface of the inner cavity of the oven through a bearing, four guide rails are fixedly installed circumferentially and equidistantly on the upper part of the outer surface of the driving rod, two guide blocks movably connected to the guide rails are symmetrically fixedly installed on the lower part of the outer surface of the material laying pipe, an annular upper supporting plate is arranged below the material laying pipe, and a material unloading mechanism is arranged in the inner cavity of the material conveying shell; wherein, the outer surface of the material conveying shell is in contact with the inner cavity of the connecting channel, the top surface of the material conveying shell is movably connected with the inner cavity top surface of the drainage cavity, the upper opening of the material laying pipe is communicated with the inner cavity of the material conveying shell through a connecting piece, and the outer ring of the upper supporting plate is fixedly connected to the inner cavity of the oven.

[0018] In the above technical solution, preferably, the driving mechanism further comprises a driving motor fixedly mounted on the bottom surface of the oven, a sliding channel is provided on the top surface of the driving rod, a connecting rod moves up and down in the inner cavity of the sliding channel, and a lifting mechanism is provided in the inner cavity of the sliding channel and connected to the inner cavity bottom surface of the oven for driving the connecting rod to move;

[0019] The bottom end of the driving rod penetrates the bottom surface of the oven, and the bottom end of the driving rod is fixedly connected to the end surface of the output shaft of the driving motor, and the top end of the connecting rod is fixedly connected to the bottom surface of the feeding shell.

[0020] In the above technical solution, preferably, the lifting mechanism includes a screw rod vertically movably installed on the bottom surface of the inner cavity of the sliding channel through a bearing, a driving wheel fixedly sleeved on the lower part of the screw rod, a mounting hole connected to the inner cavity of the sliding channel at the lower part of the outer surface of the driving rod, a docking roller rotatably installed in the mounting hole through a rotating shaft, and a docking ring fixedly installed on the bottom surface of the inner cavity of the oven;

[0021] Among them, one side of the outer ring of the docking roller is movably connected to the inner ring of the docking ring, and the other side of the outer ring of the docking roller is movably connected to the outer ring of the driving wheel. A threaded hole adapted to the screw rod is provided on the bottom surface of the connecting rod. When the screw rod rotates, the connecting rod is driven to move under the action of the threaded hole.

[0022] In the above technical scheme, preferably, the unloading mechanism includes a sealing block arranged at the lower part of the inner cavity of the feed shell, a group of scraper blocks fixedly installed at the edge of the bottom surface of the sealing block at equidistant intervals in the circumferential direction, and a two-stage spring telescopic rod fixedly installed vertically in the middle of the bottom surface of the sealing block, and the bottom end of the two-stage spring telescopic rod is fixedly connected to the top end of the screw rod; wherein, the two-stage spring telescopic rod is mainly composed of an upper rod and a lower rod, and the upper rod and the lower rod are slidingly connected, and a limiting ring is provided on the outer surface of the upper rod through a bearing movable sleeve, and the upper surface of the limiting ring is movably connected to the top surface of the inner cavity of the threaded hole, and a group of scraper rods are vertically fixedly installed at the edge of the upper surface of the sealing block at equidistant intervals in the circumferential direction, and the scraping surface of the scraper rod is movably connected to the inner cavity of the feed shell.

[0023] In the above technical solution, preferably, the connecting part includes four discharge ports equidistantly arranged on the bottom surface of the inner cavity of the material conveying shell, a discharge joint fixedly installed on the bottom surface of the material conveying shell and connected with the discharge ports, and a rubber connecting pipe fixed in the inner cavity of the discharge joint and the upper opening of the material laying pipe; wherein the upper part of the material laying pipe is hinged to the outer surface of the discharge joint.

[0024] In the above technical scheme, preferably, the screening mechanism includes a screening shell slidably installed in the inner cavity of the material laying pipe, a group of filter plates equidistantly fixedly installed on the bottom surface of the inner cavity of the screening shell, a discharge plate fixedly installed on one side of the filter plate, a baffle plate fixedly installed on the upper part of the inner cavity of the screening shell and located between two adjacent filter plates, an aggregate shell fixedly installed on the bottom surface of the screening shell, a discharge hole provided on the bottom surface of the inner cavity of the screening shell and located between the filter plate and the discharge plate, a lower support plate arranged below the upper support plate, a transmission mechanism arranged on the guide rail and the guide block for driving the screening shell to reciprocate along the opening directions at both ends of the material laying pipe, and a metal hose connected to the bottom surface of the aggregate shell;

[0025] The bottom surface of the aggregate shell penetrates to the outside of the inner cavity of the material laying pipe, and the lower port of the metal hose penetrates the inner circle of the upper support plate and extends to the top of the lower support plate.

[0026] In the above technical solution, preferably, the transmission mechanism includes a cross bar fixedly mounted on the outer wall of the guide track, a transmission wheel mounted on the guide block through a rotating shaft, a docking groove provided on the outer surface of the screening shell, and a cam arranged in the docking groove; wherein the axis of the cam is fixedly connected to one end of the rotating shaft of the transmission wheel, the outer surface of the cam is movably connected to the left and right sides of the inner cavity of the docking groove, and the outer ring of the transmission wheel is movably connected to the upper surface of the cross bar.

[0027] In the above technical scheme, preferably, the screening mechanism also includes a sliding shell connected to the lower port of the metal hose, four slideways fixedly installed at the lower part of the outer surface of the driving rod at equidistant circumferential distances, and a compression spring arranged in the inner cavity of the slideway on the side close to the driving rod; wherein the outer surface of the sliding shell is slidably connected to the inner cavity of the slideway, and the left and right ends of the compression spring are fixedly connected to the outer surface of the sliding shell and the inner cavity of the slideway, respectively.

[0028] In the above technical solution, preferably, the inner cavity of the conveying shell is circumferentially equidistantly provided with drainage holes, the upper support plate and the lower support plate are respectively provided with through holes for hot air flow, and the upper surfaces of the upper support plate and the lower support plate are respectively provided with high-temperature resistant breathable flooring paper.

[0029] In the above technical solution, preferably, two material taking channels are symmetrically opened on the right side of the inner cavity of the oven, a detachable sealing door is provided in the inner cavity of the material taking channel, and a sewage pipe is connected to the left side of the lower inner cavity of the drainage cavity.

[0030] Beneficial Effects

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention adopts the coordinated design of the oven, the conveying mechanism, the drainage cavity, the connecting pipe and other structures. In the initial state, the top surface of the feed shell is in contact with the top surface of the inner cavity of the drainage cavity. The operator controls the valve on the connecting pipe to allow the mixed solution after the replacement reaction to enter the drainage cavity and fall into the feed shell. The waste liquid in the mixed solution is discharged to the outside of the drainage cavity through the drainage pipe through the drainage hole. Then, the feed shell is driven by the driving mechanism to rotate and move downward at the same time. When the feed shell rotates, it can drive the laying pipe to rotate circumferentially. At the same time, when the feed shell moves downward, under the action of the guide block and the guide rail, it can drive the laying pipe to move, so that the lower opening of the laying pipe is supported upward. The edge of the feeding shell moves, and when the feeding shell moves downward, it can drive the unloading mechanism to operate, so that the moist silver-clad copper powder in the feeding shell passes through the connecting piece through the laying pipe and evenly falls on the upper surface of the upper support plate, and can quickly and evenly put the silver-clad copper powder into the oven, thereby improving the efficiency of preparing the silver-clad copper powder and improving the practicability of the equipment. It solves the problem that the operator is required to manually place the silver-clad copper in the oven in the prior art, which reduces the preparation efficiency of the silver-clad copper powder, and when the operator manually places the silver-clad copper in the oven, it is not convenient to evenly place the moist silver-clad copper powder, which easily causes the silver-clad copper powder to pile up together, thereby reducing the drying efficiency and effect and having low practicability.

[0033] 2. The present invention adopts the coordinated design of structures such as a material laying pipe and a screening mechanism. When the material laying pipe moves to make the silver-coated copper powder fall evenly on the surface of the upper support plate, the material laying pipe can drive the screening mechanism to operate. When the screening mechanism operates, the silver-coated copper powder passing through the material laying pipe can be screened, and small-particle silver-coated copper powder with a normal particle size produced due to collision and wear in the preparation process of the silver-coated copper powder can be separated and collected, and the separated and collected small-particle silver-coated copper powder can be evenly dropped on the lower support plate for drying, thereby improving the synthesis quality of the silver-coated copper powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 It is a front cross-sectional structural schematic diagram of the oven of the present invention;

[0036] Figure 3 It is a front cross-sectional structural schematic diagram of the oven, the material conveying shell and the driving mechanism of the present invention;

[0037] Figure 4 for Figure 3 An enlarged schematic diagram of part A is shown;

[0038] Figure 5 for Figure 3 An enlarged schematic diagram of portion B is shown;

[0039] Figure 6This is a schematic diagram of the structure of the material laying pipe, the guide block and the guide rail of the present invention;

[0040] Figure 7 It is a partial front cross-sectional structural schematic diagram of the screening mechanism of the present invention;

[0041] Figure 8 It is a schematic cross-sectional structure diagram of the material laying pipe, screening shell, filter plate, discharge plate, baffle plate, collection shell, and discharge hole of the present invention;

[0042] Fig. 9 It is a partial cross-sectional structural schematic diagram of the material laying pipe, guide rail, screening shell and transmission mechanism of the present invention.

[0043] In the figure: 1, reaction tank; 2, conveying mechanism; 21, conveying shell; 22, laying pipe; 23, guide rail; 24, guide block; 25, upper support plate; 3, oven; 4, screening mechanism; 41, screening shell; 42, filter plate; 43, discharge plate; 44, baffle plate; 45, collection shell; 46, metal hose; 47, lower support plate; 48, slideway; 49, slide shell; 410, discharge hole; 5, dryer; 6, connecting pipe; 7, connecting channel; 8, driving mechanism; 81. Driving rod; 82. Driving motor; 83. Connecting rod; 9. Unloading mechanism; 91. Sealing block; 92. Scraping block; 93. Two-stage spring telescopic rod; 94. Limiting ring; 95. Scraping rod; 10. Connecting piece; 11. Lifting mechanism; 111. Screw rod; 112. Driving wheel; 113. Docking roller; 114. Docking ring; 12. Transmission mechanism; 121. Cross bar; 122. Transmission wheel; 123. Docking groove; 124. Cam; 13. Drainage chamber. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figures 1 to 9 As shown, the present invention provides a wet synthesis method for preparing silver-clad copper, and the specific wet synthesis method steps are as follows:

[0046] S1, after pickling treatment, the copper powder is placed in a reaction tank 1;

[0047] S2, transporting the silver salt solution into the reaction tank 1 and mixing it with the pickled copper powder;

[0048] S3, inputting the reducing agent solution into the reaction tank 1 to cause the silver salt solution to undergo a replacement reaction, so that the silver ions are coated on the surface of the copper powder;

[0049] S4, after the replacement reaction is completed, the mixed solution in the reaction tank 1 is separated into solid and liquid through the conveying mechanism 2, and the separated silver-coated copper powder is evenly placed in the oven 3;

[0050] S5, while the silver-coated copper powder is evenly placed in the oven 3, the silver-coated copper powder is screened and separated by the screening mechanism 4;

[0051] S6, through the heating effect of the dryer 5 in the oven 3, dry silver-coated copper powder can be obtained;

[0052] The operation procedures in steps S1-S6 of the wet synthesis method described above require the reaction tank 1, the conveying mechanism 2, the oven 3, the screening mechanism 4 and the dryer 5 to cooperate to complete the corresponding processing operations, wherein:

[0053] An oven 3 is provided at the bottom of the reaction tank 1, a conveying mechanism 2 is provided in the inner cavity of the oven 3, and a dryer 5 is fixedly installed on the inner cavity bottom surface of the oven 3; a drainage cavity 13 is provided at the upper part of the oven 3, the inner cavity bottom of the reaction tank 1 is connected with the inner cavity top of the drainage cavity 13 through a connecting pipe 6 with a valve, and a connecting channel 7 connected with the inner cavity of the oven 3 is provided in the middle of the inner cavity bottom surface of the drainage cavity 13;

[0054] The conveying mechanism 2 includes a feed shell 21 arranged in the inner cavity of the connecting channel 7, a driving mechanism 8 arranged on the bottom surface of the feed shell 21 for driving the feed shell 21 to move up and down and rotate, four material laying pipes 22 are arranged circumferentially on the bottom surface of the feed shell 21, and the driving mechanism 8 mainly includes a driving rod 81 vertically movably installed in the middle of the bottom surface of the inner cavity of the oven 3 through a bearing, four guide rails 23 are fixedly installed equidistantly on the upper part of the outer surface of the driving rod 81, two guide blocks 24 movably connected to the guide rails 23 are symmetrically fixedly installed on the lower part of the outer surface of the material laying pipe 22, and an annular upper support plate 25 is arranged below the material laying pipe 22, and a material unloading mechanism 9 is arranged in the inner cavity of the feed shell 21; wherein, the outer surface of the feed shell 21 is in contact with the inner cavity of the connecting channel 7, and the feed shell The top surface of 21 is movably connected with the top surface of the inner cavity of the drainage cavity 13, the upper opening of the laying pipe 22 is connected with the inner cavity of the feeding shell 21 through the connecting piece 10, the outer ring of the upper support plate 25 is fixedly connected with the inner cavity of the oven 3, the inner cavity of the feeding shell 21 is circumferentially equidistantly provided with drainage holes, the right side of the inner cavity of the oven 3 is symmetrically provided with two material taking channels, a detachable sealing door is provided in the inner cavity of the material taking channels, the lower left side of the inner cavity of the drainage cavity 13 is connected with a sewage pipe, the connecting piece 10 includes four discharge ports circumferentially equidistantly provided on the bottom surface of the inner cavity of the feeding shell 21, a discharge joint fixedly installed on the bottom surface of the feeding shell 21 and connected with the discharge port, and a rubber connecting pipe fixed in the inner cavity of the discharge joint and the upper opening of the laying pipe 22; wherein, the upper part of the laying pipe 22 is hinged to the outer surface of the discharge joint.

[0055] When in use, in the initial state, the top surface of the feed shell 21 is in contact with the top surface of the inner cavity of the drainage chamber 13. The operator controls the valve on the connecting pipe 6 to allow the mixed solution after the replacement reaction to enter the drainage chamber 13 and fall into the feed shell 21. The waste liquid in the mixed solution is discharged from the drainage pipe to the outside of the drainage chamber 13 through the drainage hole. Then, the feed shell 21 is driven by the driving mechanism 8 to rotate and move downward. When the feed shell 21 rotates, it can drive the laying pipe 22 to rotate circumferentially. At the same time, when the feed shell 21 moves downward, the guide block 24 and the guide block 24 are connected. Under the action of the track 23, the material laying pipe 22 can be driven to move, so that the lower opening of the material laying pipe 22 moves toward the edge of the upper support plate 25. At the same time, when the feed shell 21 moves downward, the unloading mechanism 9 can be driven to operate, so that the moist silver-coated copper powder in the feed shell 21 passes through the connecting piece 10 through the material laying pipe 22 and evenly falls on the upper surface of the upper support plate 25, so that the silver-coated copper powder can be quickly and evenly placed in the oven 3, thereby improving the efficiency of the preparation of the silver-coated copper powder, avoiding the accumulation of the silver-coated copper powder, reducing the drying efficiency and effect, and improving the practicability of the equipment.

[0056] It should be noted that when the laying pipe 22 moves to make the silver-coated copper powder fall evenly on the surface of the upper support plate 25, the movement of the laying pipe 22 can drive the screening mechanism 4 to operate. When the screening mechanism 4 operates, the silver-coated copper powder passing through the laying pipe 22 can be screened, and the small-particle silver-coated copper powder with a normal particle size produced due to collision and wear during the preparation process of the silver-coated copper powder can be separated and collected, and the separated and collected small-particle silver-coated copper powder can be evenly dried, thereby improving the synthesis quality of the silver-coated copper powder.

[0057] like Figure 3 As shown, the driving mechanism 8 also includes a driving motor 82 fixedly mounted on the bottom surface of the oven 3, a sliding channel provided on the top surface of the driving rod 81, a connecting rod 83 moving up and down in the inner cavity of the sliding channel, and a lifting mechanism 11 provided in the inner cavity of the sliding channel and on the inner cavity bottom surface of the oven 3 for driving the connecting rod 83 to move;

[0058] The bottom end of the driving rod 81 penetrates the bottom surface of the oven 3 , and is fixedly connected to the output shaft end surface of the driving motor 82 , and the top end of the connecting rod 83 is fixedly connected to the bottom surface of the feeding shell 21 .

[0059] When in use, the driving motor 82 drives the driving rod 81 to rotate, and the rotation of the driving rod 81 drives the connecting rod 83 to rotate, and the rotation of the connecting rod 83 drives the feed shell 21 to rotate. The rotation of the feed shell 21 can drive the laying pipe 22 to rotate circumferentially. When the laying pipe 22 rotates circumferentially, the silver-coated copper powder can be evenly scattered on the upper support plate 25.

[0060] like Figure 3 and Figure 4As shown, the lifting mechanism 11 includes a screw rod 111 vertically mounted on the bottom surface of the inner cavity of the sliding channel through a bearing, a driving wheel 112 fixedly sleeved on the lower part of the screw rod 111, a mounting hole opened at the lower part of the outer surface of the driving rod 81 and communicating with the inner cavity of the sliding channel, a docking roller 113 rotatably mounted in the mounting hole through a rotating shaft, and a docking ring 114 fixedly mounted on the bottom surface of the inner cavity of the oven 3;

[0061] Among them, one side of the outer ring of the docking roller 113 is movably connected to the inner ring of the docking ring 114, and the other side of the outer ring of the docking roller 113 is movably connected to the outer ring of the driving wheel 112. A threaded hole compatible with the screw rod 111 is provided on the bottom surface of the connecting rod 83. When the screw rod 111 rotates, the connecting rod 83 is driven to move under the action of the threaded hole.

[0062] When in use, the driving rod 81 rotates, driving the docking roller 113 to rotate circumferentially and interact with the docking ring 114, so that the docking roller 113 can rotate on its own while rotating circumferentially. When the docking roller 113 rotates on its own, it drives the driving wheel 112 to rotate the screw rod 111. The rotation of the screw rod 111 can drive the connecting rod 83 to move downward, so that when the connecting rod 83 moves downward, it can drive the laying pipe 22 to move under the action of the guide block 24 and the guide rail 23.

[0063] like Figure 3 and Figure 5 As shown, the unloading mechanism 9 includes a sealing block 91 arranged at the lower part of the inner cavity of the feeding shell 21, a group of scraper blocks 92 fixedly installed at the edge of the bottom surface of the sealing block 91 at equidistant intervals in the circumferential direction, and a two-stage spring telescopic rod 93 fixedly installed vertically in the middle of the bottom surface of the sealing block 91, and the bottom end of the two-stage spring telescopic rod 93 is fixedly connected to the top end of the screw rod 111; wherein, the two-stage spring telescopic rod 93 is mainly composed of an upper rod and a lower rod, the upper rod and the lower rod are slidably connected, and a limiting ring 94 is provided on the outer surface of the upper rod through a bearing movable sleeve, and the upper surface of the limiting ring 94 is movably connected to the top surface of the inner cavity of the threaded hole, and a group of scraper rods 95 are vertically fixedly installed at equidistant intervals in the circumferential direction at the edge of the upper surface of the sealing block 91, and the scraping surface of the scraper rod 95 is movably connected to the inner cavity of the feeding shell 21.

[0064] During use, when the screw rod 111 rotates to drive the connecting rod 83 to move downward, the top of the screw rod 111 can lift the sealing block 91 upward through the two-stage spring telescopic rod 93. At the same time, the screw rod 111 drives the two-stage spring telescopic rod 93 to rotate when it rotates. When the two-stage spring telescopic rod 93 rotates, it can drive the sealing block 91 to rotate. Therefore, the rotation of the sealing block 91 can drive the scraper rod 95 to rotate circumferentially, and at the same time, it can drive the scraper block 92 to rotate circumferentially, so that the moist silver-coated copper powder in the feed shell 21 can enter the laying pipe 22 through the connecting piece 10.

[0065] like Figure 7 and Figure 8As shown, the screening mechanism 4 includes a screening shell 41 slidably mounted in the inner cavity of the material laying pipe 22, a group of filter plates 42 equidistantly fixedly mounted on the bottom surface of the inner cavity of the screening shell 41, a discharge plate 43 fixedly mounted on one side of the filter plate 42, a baffle plate 44 fixedly mounted on the upper part of the inner cavity of the screening shell 41 and located between two adjacent filter plates 42, a collection shell 45 fixedly mounted on the bottom surface of the screening shell 41, a discharge hole 410 opened on the bottom surface of the inner cavity of the screening shell 41 and located between the filter plate 42 and the discharge plate 43, a lower support plate 47 arranged below the upper support plate 25, a transmission mechanism 12 arranged on the guide rail 23 and the guide block 24 for driving the screening shell 41 to reciprocate along the opening directions at both ends of the material laying pipe 22, and a metal hose 46 connected to the bottom surface of the collection shell 45;

[0066] Among them, the bottom surface of the aggregate shell 45 penetrates to the outside of the inner cavity of the laying pipe 22, the lower port of the metal hose 46 penetrates the inner circle of the upper support plate 25 and extends to the top of the lower support plate 47, and the upper support plate 25 and the lower support plate 47 are respectively provided with through holes for hot air flow, and the upper surfaces of the upper support plate 25 and the lower support plate 47 are respectively provided with high-temperature resistant and breathable laying paper.

[0067] During use, when the laying pipe 22 moves, it can drive the transmission mechanism 12 to operate, and the transmission mechanism 12 can drive the screening shell 41 to move back and forth to produce a vibration effect, so that the small-particle silver-coated copper powder passing through the laying pipe 22 can pass through the filter plate 42, the baffle plate 44 and the discharge plate 43 and enter the aggregate shell 45 through the discharge hole 410 for collection, and the small-particle silver-coated copper powder collected in the aggregate shell 45 can fall onto the lower support plate 47 through the metal hose 46, which is convenient for separating, collecting and drying the small-particle silver-coated copper powder with a normal particle size produced due to collision and wear during the preparation process.

[0068] like Fig. 9 As shown, the transmission mechanism 12 includes a cross bar 121 fixedly mounted on the outer wall of the guide track 23, a transmission wheel 122 rotatably mounted on the guide block 24 via a rotating shaft, a docking groove 123 provided on the outer surface of the screening shell 41, and a cam 124 arranged in the docking groove 123; wherein, the axis of the cam 124 is fixedly connected to one end of the rotating shaft of the transmission wheel 122, the outer surface of the cam 124 is movably connected to the left and right sides of the inner cavity of the docking groove 123, and the outer ring of the transmission wheel 122 is movably connected to the upper surface of the cross bar 121.

[0069] When in use, when the laying pipe 22 moves, it drives the transmission wheel 122 to move. Under the action of the transmission wheel 122 and the cross bar 121, the transmission wheel 122 can rotate while moving, so that the transmission wheel 122 drives the cam 124 to rotate when it rotates. When the cam 124 rotates, it interacts with the inner cavity of the docking groove 123, and can drive the screening shell 41 to reciprocate and produce a vibration effect.

[0070] like Figure 7 As shown, the screening mechanism 4 also includes a sliding shell 49 connected to the lower end of the metal hose 46, four slideways 48 circumferentially equidistantly fixedly installed on the lower part of the outer surface of the driving rod 81, and a compression spring arranged in the inner cavity of the slideway 48 close to the driving rod 81; wherein, the outer surface of the sliding shell 49 is slidably connected to the inner cavity of the slideway 48, and the left and right ends of the compression spring are fixedly connected to the outer surface of the sliding shell 49 and the inner cavity of the slideway 48, respectively.

[0071] When in use, when the laying pipe 22 moves, it can drive the aggregate shell 45 to move, and when the aggregate shell 45 moves, it can drive the metal hose 46 to move, and the movement of the metal hose 46 can drive the sliding shell 49 to move, so that the laying pipe 22 moves and the sliding shell 49 moves synchronously, so that the small-particle silver-coated copper powder collected by screening can be evenly dropped on the lower support plate 47 through the sliding shell 49 for drying.

[0072] The working principle and use process of the present invention:

[0073] When in use, the operator first controls the valve on the connecting pipe 6 to allow the mixed solution after the replacement reaction to enter the drainage chamber 13 and fall into the feed shell 21. The waste liquid in the mixed solution is discharged from the drainage pipe to the outside of the drainage chamber 13 through the drainage hole. Then, the driving motor 82 is driven to rotate the driving rod 81, and the driving rod 81 rotates to drive the connecting rod 83 to rotate. The connecting rod 83 rotates to drive the feed shell 21 to rotate. The rotation of the feed shell 21 can drive the laying pipe 22 to rotate circumferentially. At the same time, the rotation of the driving rod 81 drives the docking roller 113 to rotate circumferentially and interact with the docking ring 114, so that the docking roller 113 can rotate circumferentially while rotating. When the connecting roller 113 rotates, the driving wheel 112 drives the screw rod 111 to rotate. The rotation of the screw rod 111 can drive the connecting rod 83 to move downward. When the screw rod 111 rotates to drive the connecting rod 83 to move downward, the top of the screw rod 111 can push the sealing block 91 upward through the two-stage spring telescopic rod 93. At the same time, when the screw rod 111 rotates, it drives the two-stage spring telescopic rod 93 to rotate. When the two-stage spring telescopic rod 93 rotates, it can drive the sealing block 91 to rotate. Therefore, the rotation of the sealing block 91 can drive the scraper rod 95 to rotate circumferentially, and at the same time, it can drive the scraper block 92 to rotate circumferentially, so that the moist silver-coated copper powder in the feeding shell 21 passes through the connecting piece 1 0 enters the material laying pipe 22, and when the material conveying shell 21 moves downward, the material laying pipe 22 can be driven to move under the action of the guide block 24 and the guide rail 23, so that the lower opening of the material laying pipe 22 moves to the edge of the upper support plate 25, so that the silver-coated copper powder in the material laying pipe 22 can fall on the upper support plate 25 quickly and evenly for drying. At the same time, when the material laying pipe 22 moves, it drives the transmission wheel 122 to move. Under the action of the transmission wheel 122 and the cross bar 121, the transmission wheel 122 can rotate while moving, so that the transmission wheel 122 rotates and drives the cam 124 to rotate. When the cam 124 rotates, it interacts with the inner cavity of the docking groove 123 to drive The sieving shell 41 moves back and forth, and the vibration effect generated by the reciprocating movement of the sieving shell 41 can make the small-particle silver-coated copper powder passing through the material laying pipe 22 pass through the filter plate 42, the baffle plate 44 and the discharge plate 43 and enter the aggregate shell 45 through the discharge hole 410 for collection. When the material laying pipe 22 moves, it can drive the aggregate shell 45 to move. When the aggregate shell 45 moves, it can drive the metal hose 46 to move. The movement of the metal hose 46 can drive the sliding shell 49 to move, so that the sliding shell 49 moves synchronously with the movement of the material laying pipe 22, so that the small-particle silver-coated copper powder collected in the aggregate shell 45 passes through the metal hose 46 and the sliding shell 49 and evenly falls on the lower support plate 47 for drying.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wet synthesis method for preparing silver-clad copper, characterized in that: The specific wet synthesis method steps are as follows: S1, after pickling treatment, the copper powder is placed in a reaction tank (1); S2, transporting the silver salt solution into the reaction tank (1) to mix with the copper powder after the pickling treatment; S3, inputting the reducing agent solution into the reaction tank (1) to cause the silver salt solution to undergo a replacement reaction, so that the silver ions are coated on the surface of the copper powder; S4, after the replacement reaction is completed, the mixed solution in the reaction tank (1) is separated into solid and liquid through the conveying mechanism (2), and the separated silver-coated copper powder is evenly placed in the oven (3); S5, while the silver-coated copper powder is evenly placed in the oven (3), the silver-coated copper powder is screened and separated by a screening mechanism (4); S6, through the heating effect of the drying device (5) in the oven (3), dry silver-coated copper powder can be obtained; The operation steps in steps S1 to S6 of the wet synthesis method require the reaction tank (1), the conveying mechanism (2), the oven (3), the screening mechanism (4) and the dryer (5) to cooperate to complete the corresponding processing operations, wherein: A drying oven (3) is arranged at the bottom of the reaction tank (1), a conveying mechanism (2) is arranged in the inner cavity of the drying oven (3), and a drying device (5) is fixedly mounted on the inner cavity bottom surface of the drying oven (3); wherein a drainage cavity (13) is provided at the top of the drying oven (3), the inner cavity bottom of the reaction tank (1) is connected to the inner cavity top of the drainage cavity (13) through a connecting pipe (6) with a valve, and a connecting channel (7) connected to the inner cavity of the drying oven (3) is provided in the middle of the inner cavity bottom surface of the drainage cavity (13); The conveying mechanism (2) comprises a material conveying shell (21) arranged in the inner cavity of the connecting channel (7), a driving mechanism (8) arranged on the bottom surface of the material conveying shell (21) for driving the material conveying shell (21) to move up and down and rotate, four material laying pipes (22) are arranged circumferentially on the bottom surface of the material conveying shell (21), and the driving mechanism (8) mainly comprises a driving rod (81) vertically movably mounted on the middle part of the bottom surface of the inner cavity of the oven (3) through a bearing, four guide rails (23) are fixedly mounted equidistantly on the upper part of the outer surface of the driving rod (81), and four guide rails (23) are symmetrically fixedly mounted on the lower part of the outer surface of the material laying pipe (22). There are two guide blocks (24) movably connected to the guide rail (23), an annular upper support plate (25) is arranged below the material laying pipe (22), and a material discharge mechanism (9) is arranged in the inner cavity of the material conveying shell (21); wherein, the outer surface of the material conveying shell (21) is in contact with the inner cavity of the connecting channel (7), the top surface of the material conveying shell (21) is movably connected to the inner cavity top surface of the drainage cavity (13), the upper opening of the material laying pipe (22) is connected to the inner cavity of the material conveying shell (21) through a connecting piece (10), and the outer ring of the upper support plate (25) is fixedly connected to the inner cavity of the oven (3).

2. A wet synthesis method for preparing silver-clad copper according to claim 1, characterized in that: The driving mechanism (8) further comprises a driving motor (82) fixedly mounted on the bottom surface of the oven (3), a sliding channel provided on the top surface of the driving rod (81), a connecting rod (83) moving up and down in the inner cavity of the sliding channel, and a lifting mechanism (11) provided in the inner cavity of the sliding channel and on the inner cavity bottom surface of the oven (3) for driving the connecting rod (83) to move; The bottom end of the driving rod (81) penetrates through the bottom surface of the oven (3), and the bottom end of the driving rod (81) is fixedly connected to the end surface of the output shaft of the driving motor (82), and the top end of the connecting rod (83) is fixedly connected to the bottom surface of the feed shell (21).

3. A wet synthesis method for preparing silver-clad copper according to claim 2, characterized in that: The lifting mechanism (11) comprises a screw rod (111) vertically movably mounted on the bottom surface of the inner cavity of the sliding channel via a bearing, a driving wheel (112) fixedly sleeved on the lower part of the screw rod (111), a mounting hole provided at the lower part of the outer surface of the driving rod (81) and communicating with the inner cavity of the sliding channel, a docking roller (113) rotatably mounted in the mounting hole via a rotating shaft, and a docking ring (114) fixedly mounted on the bottom surface of the inner cavity of the oven (3); One side of the outer ring of the docking roller (113) is movably connected to the inner ring of the docking ring (114), and the other side of the outer ring of the docking roller (113) is movably connected to the outer ring of the driving wheel (112). A threaded hole matching the screw rod (111) is provided on the bottom surface of the connecting rod (83). When the screw rod (111) rotates, the connecting rod (83) is driven to move under the action of the threaded hole.

4. A wet synthesis method for preparing silver-clad copper according to claim 3, characterized in that: The unloading mechanism (9) comprises a sealing block (91) arranged at the lower part of the inner cavity of the feeding shell (21), a group of scraper blocks (92) fixedly installed at the edge of the bottom surface of the sealing block (91) at equal intervals in the circumferential direction, and a two-stage spring telescopic rod (93) fixedly installed vertically in the middle part of the bottom surface of the sealing block (91), the bottom end of the two-stage spring telescopic rod (93) is fixedly connected to the top end of the screw rod (111); wherein the two-stage spring telescopic rod (93) is mainly composed of an upper rod and a lower rod, the upper rod and the lower rod are slidably connected, the outer surface of the upper rod is provided with a limiting ring (94) through a bearing movable sleeve, the upper surface of the limiting ring (94) is movably connected to the top surface of the inner cavity of the threaded hole, and a group of scraper rods (95) are fixedly installed vertically at equal intervals in the circumferential direction at the edge of the upper surface of the sealing block (91), and the scraping surface of the scraper rod (95) is movably connected to the inner cavity of the feeding shell (21).

5. A wet synthesis method for preparing silver-clad copper according to claim 1, characterized in that: The connecting member (10) comprises four discharge ports equidistantly arranged in the circumferential direction on the bottom surface of the inner cavity of the material conveying shell (21), a discharge joint fixedly installed on the bottom surface of the material conveying shell (21) and connected with the discharge ports, and a rubber connecting pipe fixed in the inner cavity of the discharge joint and the upper opening of the material laying pipe (22); wherein the upper part of the material laying pipe (22) is hinged to the outer surface of the discharge joint.

6. A wet synthesis method for preparing silver-clad copper according to claim 1, characterized in that: The screening mechanism (4) comprises a screening shell (41) slidably mounted in the inner cavity of the material laying pipe (22), a group of filter plates (42) equidistantly fixedly mounted on the bottom surface of the inner cavity of the screening shell (41), a discharge plate (43) fixedly mounted on one side of the filter plate (42), a baffle plate (44) fixedly mounted on the upper part of the inner cavity of the screening shell (41) and located between two adjacent filter plates (42), a collection shell (45) fixedly mounted on the bottom surface of the screening shell (41), and an opening A discharge hole (410) is arranged on the bottom surface of the inner cavity of the screening shell (41) between the filter plate (42) and the discharge plate (43); a lower support plate (47) is arranged below the upper support plate (25); a transmission mechanism (12) is arranged on the guide rail (23) and the guide block (24) for driving the screening shell (41) to reciprocate along the opening directions at both ends of the material laying pipe (22); and the transmission mechanism (12) is connected to the metal hose (46) on the bottom surface of the aggregate shell (45); The bottom surface of the aggregate shell (45) penetrates to the outside of the inner cavity of the material laying pipe (22), and the lower end of the metal hose (46) penetrates the inner circle of the upper support plate (25) and extends to the top of the lower support plate (47).

7. A wet synthesis method for preparing silver-clad copper according to claim 6, characterized in that: The transmission mechanism (12) comprises a cross bar (121) fixedly mounted on the outer wall of the guide track (23), a transmission wheel (122) rotatably mounted on the guide block (24) via a rotating shaft, a docking groove (123) provided on the outer surface of the screening shell (41), and a cam (124) arranged in the docking groove (123); wherein the axis of the cam (124) is fixedly connected to one end of the rotating shaft of the transmission wheel (122), the outer surface of the cam (124) is movably connected to the left and right sides of the inner cavity of the docking groove (123), and the outer ring of the transmission wheel (122) is movably connected to the upper surface of the cross bar (121).

8. A wet synthesis method for preparing silver-clad copper according to claim 6, characterized in that: The screening mechanism (4) further comprises a sliding shell (49) connected to the lower port of the metal hose (46), four slideways (48) equidistantly and fixedly mounted on the lower portion of the outer surface of the driving rod (81), and a compression spring arranged in the inner cavity of the slideway (48) on one side close to the driving rod (81); wherein the outer surface of the sliding shell (49) is slidably connected to the inner cavity of the slideway (48), and the left and right ends of the compression spring are respectively fixedly connected to the outer surface of the sliding shell (49) and the inner cavity of the slideway (48).

9. A wet synthesis method for preparing silver-clad copper according to claim 6, characterized in that: The inner cavity of the conveying shell (21) is provided with drainage holes at equal intervals in the circumferential direction, the upper support plate (25) and the lower support plate (47) are respectively provided with through holes for hot air flow, and the upper surfaces of the upper support plate (25) and the lower support plate (47) are respectively provided with high-temperature resistant breathable floor paper.

10. A wet synthesis method for preparing silver-clad copper according to claim 1, characterized in that: Two material taking channels are symmetrically provided on the right side of the inner cavity of the oven (3), a detachable sealing door is provided in the inner cavity of the material taking channels, and a sewage pipe is connected to the left side of the lower inner cavity of the drainage cavity (13).

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