A production line for preparing electrolytic tin stripping agent and a preparation method thereof

Abstract

The invention provides a preparation production line and a preparation method of an electrolytic tin stripping agent, and relates to the field of preparation, production and mixing technology of the electrolytic tin stripping agent, comprising a filling conveyor line, a plurality of production racks distributed along the conveying direction of the filling conveyor line, and a material-liquid transition layer, a mixing reaction layer and a filling layer installed on the production rack and distributed in sequence from top to bottom; a plurality of positioning modules are evenly distributed along the circumferential direction on the conveyor belt of the filling conveyor line, the movement distance between two adjacent positioning modules is the same as the distance between two adjacent production racks, a positioning mold cavity for positioning a storage box is arranged in the positioning module, and the storage box moves with the conveyor belt to the filling layer of the corresponding production rack for filling of the finished product. The invention changes the traditional large-scale production method and adopts an online small-scale modular preparation method, which is not only more efficient, but also has a stirring device for realizing the mixing reaction in each mixing reaction layer, and also has a targeted mixing and stirring effect, and the mixing uniformity is better.

Description

Technical Field

[0001] The invention relates to the preparation of an electrolytic tin stripping agent, in particular to a preparation production line and a preparation method of the electrolytic tin stripping agent. Background Art

[0002] Electrolytic tin stripping agent, also known as: tin stripping water, tin stripping liquid, tin stripping agent, tin removal water, etching liquid, is suitable for the stripping of tin plating, tin-lead alloy plating and tin soldering points, especially for the stripping of tin / lead-tin alloy layer on the copper surface during the manufacturing process of semiconductor electronic components (IC) and circuit boards (PCB). It can be operated by immersion or mechanical spraying method;

[0003] In the actual production process of electrolytic tin stripping agent, especially in the large-scale online production line for preparing electrolytic tin stripping agent, the mixing reaction tank used to realize the mixed preparation of electrolytic tin stripping agent is generally large. If the original liquid in the mixing reaction tank is to be fully mixed, the stirring device needs to consume a large amount of power to drive the full stirring of the whole solution. When multiple raw materials are quantitatively introduced into the larger mixing reaction tank online from a smaller raw material inlet, the liquid in the mixing reaction tank is already preliminarily mixed under the stirring of the stirring device. After the fresh original liquid enters again, when the newly added multiple streams of raw materials enter the mixing reaction tank with the preliminary mixed reaction liquid, if there is no device that can react and fuse these multiple streams quickly, and only the stirring rod for overall stirring in the mixing reaction tank is used to realize the fusion of the original liquid and the liquid after the preliminary mixed reaction, it will not only lead to poor uniformity during the reaction, but also low stirring efficiency due to the non-targeted stirring.

[0004] For example, a manufacturing device and manufacturing method for a renewable tin stripping liquid (publication number: CN110732285A) improves the effect of preparing the raw materials of the tin stripping liquid by placing three different raw materials into three measuring cups respectively, and allowing the three prepared materials to flow into an inverted cone funnel for mixing first, and then flow into a tank body. However, the effect of this simple cone convergence is limited. When the original material liquid is initially converged by the inverted cone funnel, it is difficult to ensure sufficient original convergence mixing effect because there is no flow obstruction at the bottom. Moreover, the stirring device used to achieve mixing in the tank body has nothing to do with this inverted cone funnel. Therefore, its stirring effect is only for the overall stirring of the solution in the tank body, and there is no targeted stirring effect. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a production line for preparing an electrolytic tin stripping agent and a preparation method thereof. By setting up a plurality of production racks arranged in sequence along the conveying direction of a filling conveyor line, and preparing a liquid transition layer, a mixing reaction layer and a filling layer on the production rack, the mixed reaction that was originally a group of large mixing reaction tanks can be decomposed into a plurality of groups of small mixing reaction layers, thereby realizing an online modular production process, thereby greatly improving the efficiency of reaction mixing, and after starting the filling conveyor line, the synchronous filling of a plurality of filling layers can be realized, thereby also greatly improving the production efficiency of mixed filling, and at the same time, because a group of mixing reaction tanks with A stirring device with targeted stirring effect, that is, achieving targeted mixing of the original liquid feed and the preliminary mixed liquid feed, respectively. The mixing funnel has the first mixing effect after the first raw material convergence, and the structure of the combining inner tube at the bottom can have a certain flow barrier effect on the converged liquid feed, so that the convergence time is extended and the convergence mixing effect is improved. In the convergence process, the upper part of the stirring shaft has a stirring effect for the convergence of the original liquid feed, while the lower part has a stirring effect for the mixing of the entire liquid feed, and the two stirrings are driven synchronously as a group. When the entire liquid feed is stirred, the mixing with the preliminary mixed liquid feed is strengthened, thereby improving the uniformity of the mixing.

[0006] The present invention provides the following technical solutions:

[0007] A production line for preparing an electrolytic tin stripping agent, comprising a filling conveying line, a plurality of production racks evenly distributed along the conveying direction of the filling conveying line, and a material-liquid transition layer, a mixing reaction layer and a filling layer installed on the production racks and distributed in sequence from top to bottom;

[0008] There are multiple groups of positioning modules evenly distributed along the conveyor belt of the filling conveyor line in the circumferential direction. The moving distance between two adjacent groups of positioning modules is the same as the distance between two adjacent groups of production racks. A positioning cavity for positioning storage boxes is arranged in the positioning module. The storage box moves with the conveyor belt to the filling layer of the corresponding production rack for filling of finished products. Since the production rack is provided with multiple groups evenly distributed, and each group of production racks is provided with a corresponding group of mixing reaction layers, the mixed reaction of a large mixing reaction tank can be decomposed into multiple groups of small mixing reaction layers for carrying out, thereby greatly improving the efficiency of reaction mixing. Since the production racks are evenly distributed, if the moving distance between two adjacent groups of positioning modules is the same as the spacing between two adjacent groups of production racks, the filling conveyor line is started, and the synchronous filling of multiple groups of filling layers can be completed, thereby greatly improving the production efficiency of mixed filling. At the same time, since the material-liquid transition layer, mixing reaction layer and filling layer on the production rack are distributed from top to bottom in sequence, the horizontal occupied space can be reduced, and the utilization of the vertical space can be realized, thereby improving the effective utilization rate of the site.

[0009] A plurality of groups of feed-liquid transition pipes are arranged at the bottom of the feed-liquid transition layer, and electromagnetic valves and flow meters are installed on the feed-liquid transition pipes. When the electromagnetic valves are opened and closed, they can be used to control the feed liquid flowing into the mixed reaction layer, and the flow meter can be used to detect the amount of feed liquid flowing into the mixed reaction layer. A mixed reaction tank is installed in the mixed reaction layer, and a mixing inlet that is docked with the feed-liquid transition pipe is arranged on the top of the mixed reaction tank, and a group of conical mixing hoppers are installed inside the mixing hoppers. The top outer expansion part of the mixing hopper is used to receive the feed liquid entering from the mixing inlet, and the bottom contraction part is rotatably connected to a group of internal pipes, and a stirring device installed on the top of the mixing reaction tank is provided. The motor is driven and connected to a group of stirring shafts extending into the mixing reaction tank. The stirring shaft passes through the center of the combined inner tube one and is fixedly connected to the combined inner tube one by connecting the inner rod one. The side wall of the combined inner tube one is evenly distributed with an outer convex tube one extending outward, and the bottom end of the combined inner tube one is blocked by a sealing plate one sleeved on the outside of the stirring shaft. The periphery of the sealing plate one is fixed on the inner wall of the mixing reaction tank, and multiple groups of channel openings one are also provided on it. Multiple groups of stirring rods are also arranged outside the stirring shaft. The mixed liquid flows into the mixing reaction tank at the bottom through the outer convex tube one and the channel opening one, and is continuously stirred and mixed by the stirring shaft; and for the mixing reaction tank in the invention, Since the mixing inlets at the top are also multiple groups corresponding to the feed-liquid transition pipes one by one, they can cooperate with the entry of different types of raw material solvents or the entry of the same type of raw material solvent, so that the subdivided raw material liquid can achieve the first convergence in the conical hopper and have the first mixing effect. After the first mixing, the feed liquid can be mixed from the inside to the outside after entering the combined inner tube. In this process, the feed liquid completes the convergence mixing from the outside to the inside and the diffusion mixing effect from the inside to the outside again. When diffusing from the inside to the outside, it is a thin stream diffusion and connects the inner tube and the outer convex tube. All of them can play a certain role in strengthening the mixing effect, so the uniformity and efficiency of the mixing can be further improved. After the above initial mixing is completed, the stirring rod can assist in achieving the overall mixing. In the above process, the liquid that is later gathered in the mixing reaction tank can be less affected by the liquid that is first gathered in the mixing reaction tank. Each time the original liquid is gathered, it can be preliminarily mixed before being mixed as a whole. At the same time, the mixing process only requires one set of stirring shafts to be realized, and the setting of the combining hopper, the combining inner tube, the connecting inner rod and the outer convex tube can further improve the uniformity and efficiency of the mixing.

[0010] The bottom end of the mixing reaction tank is provided with a liquid outlet pipe connected to the filling layer, and a liquid outlet valve is provided on the liquid outlet pipe.

[0011] Preferably, at least one layer of combined outer tube one is provided outside the combined inner tube one, the combined outer tube one and the combined inner tube one are fixedly connected by a connecting outer rod one, and a plurality of groups of auxiliary rotating rods one are distributed and fixed outside the outermost combined outer tube one, and reinforced outer convex tubes extending outward are evenly distributed on the side wall of the combined outer tube one, and the bottom end of the combined outer tube one is sealed by a sleeve sealing plate one, and the channel opening one is located outside the combined outer tube one. At this time, a combined outer tube one coaxially arranged with the combined inner tube one is added outside the combined inner tube one, and when the stirring shaft drives the combined inner tube one to rotate, the combined outer tube one also rotates with the combined inner tube one, and at this time, the connecting inner rod one, the connecting outer tube and the auxiliary rotating rod one can all assist in the mixing of the feed liquid, and the distribution of the combined inner tube one and the combined outer tube one in layers from the inside to the outside in turn allows the mixed liquid to flow from the inside to the outside, and also allows the mixed liquid of each layer to be fully and evenly mixed.

[0012] Preferably, at least one group of conical combining hoppers 2 are provided between the sealing plate 1 and the stirring rod. The top outer expansion opening of the combining hopper 2 is used to receive the material liquid entering from the channel opening, and the bottom contraction opening thereof is rotatably connected to a combination of inner tubes 2. The stirring shaft passes through the center of the combined inner tubes 2 and is fixedly connected to the combined inner tubes 2 by connecting the inner rods 2. The side walls of the combined inner tubes 2 are evenly distributed with outwardly convex tubes 2 extending outward, and the bottom end of the combined inner tubes 2 is blocked by the sealing plate 2 which is sleeved on the outside of the stirring shaft. The periphery of the sealing plate 2 is fixed on the inner wall of the mixing reaction tank, and a plurality of channel openings 2 are provided thereon. The mixed material liquid flows into the mixing reaction tank at the bottom through the outward convex tubes 2 and the channel openings 2, and is continuously stirred and mixed evenly by the stirring shaft.

[0013] Preferably, a plurality of transition buffer boxes are arranged in the feed-liquid transition layer, and a group of transition outlets for docking with the feed-liquid transition pipe are arranged at the bottom of each group of transition buffer boxes, and a group of transition inlets for connecting to the raw material storage tank are arranged at the top, and a handle for convenient shifting is also arranged on one side of each group of transition buffer boxes. The arrangement of the transition buffer boxes in the feed-liquid transition layer can ensure that the original feed liquid has a certain transition buffer effect before entering the mixed reaction layer, thereby avoiding the interruption of feed liquid supply caused by sudden flow interruption in the pipeline, and since the feed-liquid transition layer is arranged above the mixed reaction layer, the feed liquid itself can complete the flow of the feed liquid into the mixed reaction layer under the action of gravity, which not only does not occupy the lateral distribution space, but also has better neatness of the factory building.

[0014] Preferably, the material-liquid transition layer is separated by partitions to form a plurality of symmetrically distributed U-shaped isolation grooves, and the transition buffer box is inserted into the U-shaped opening end of the isolation groove and moved to abut against the bottom of the isolation groove. In order to facilitate the replacement and cleaning of the transition buffer box, a top opening of the transition buffer box can be set, and a pressing plate connected to the top of the partition and pressed at the end opening of the transition buffer box is provided on the top of the material-liquid transition layer. At this time, due to the addition of partitions and the cooperation of the pressing plate with the transition buffer box, when the transition buffer box needs to be removed, it is only necessary to loosen the pressing plate and quickly remove the transition buffer from the isolation groove, which is more convenient. In addition, the pressing plate can also enable the transition outlet at the bottom of the transition buffer box that is connected to the material-liquid transition pipe to be sealed and pressed at the material-liquid transition pipe to avoid fluid leakage.

[0015] Preferably, in order to ensure that the slurry in each group of transition buffer boxes can always maintain a uniform effect, a plurality of groups of rotating rods corresponding to the transition buffer boxes can be rotatably connected on the pressing plate, and a stirring paddle is provided on the rotating rod, and a rotating gear is fixed on the end thereof extending out of the pressing plate, and a group of transition gears located between two symmetrically distributed groups of rotating gears are also provided at the center of the pressing plate, and two adjacent groups of transition gears are meshed and connected, and one group of transition gears is driven and connected to a driving motor installed on the pressing plate.

[0016] Preferably, in order to realize the automatic pressing of the pressing plate, multiple groups of screw rods can be threadedly connected in the partition, and a mounting frame can be provided on the pressing plate, and a screw motor for driving the screw rod to rotate is installed on the mounting frame. At this time, when the screw motor starts to drive the screw rod to rotate, it can drive the pressing plate to rise until the rotating rod extended into the corresponding transition buffer box is completely removed from the transition buffer box. At this time, the handle of the transition buffer box can be held to quickly pull the transition buffer box out of the isolation groove. At this time, in order to improve the sealing effect of the pressing seal, a sealing ring can be provided at the joint between the bottom end of the feed-liquid transition pipe and the mixing inlet and at the joint between the top end of the feed-liquid transition pipe and the transition outlet for docking sealing.

[0017] Preferably, a vent pipe and a circulation inlet pipe are also provided on the top of the mixing reaction tank, and a control valve 1 is provided on the vent pipe and the circulation inlet pipe. The setting of the vent pipe can facilitate the timely removal of gas that may be generated during mixing, thereby preventing the pressure in the mixing reaction tank from changing, thereby affecting the entry and outflow of the feed liquid. The circulation inlet pipe is arranged above the combining hopper 1 or below the bottom combining hopper 2. When it is located above the combining hopper 1, the circulating feed liquid can achieve mixing of the combining hopper 1 and the combining hopper 2, and when it is located below the bottom combining hopper 2, the circulating feed liquid does not need to be strengthened by the combining hopper 1 and the combining hopper 2, and a circulation outlet pipe is also provided at the bottom of the mixing reaction tank, and the circulation outlet pipe is connected to the circulation inlet pipe through the control valve 2 and the circulation pump.

[0018] Preferably, the end of the liquid outlet pipe is also connected to a set of covering plates through a hose, and the covering plates are connected to the telescopic cylinder drive installed on the filling layer, and are used to cover the box inlet of the storage box below under the drive of the telescopic cylinder, thereby preventing splashing of liquid during filling.

[0019] A method for preparing an electrolytic tin stripping agent, based on the above-mentioned production line for preparing an electrolytic tin stripping agent, comprises the following steps:

[0020] S1: The feed-liquid transition pipe of the feed-liquid transition layer is connected to the corresponding original feed-liquid tank, and the mixing and feeding of the original feed-liquid is realized through the feed-liquid pump;

[0021] S2: The original feed liquid entering the feed-liquid transition pipe enters the mixing reaction tank through the mixing inlet, and converges the thin streams in the combining hopper 1 until it converges into the combined inner tube 1. At this time, the stirring motor drives the stirring shaft to rotate, thereby driving the rotation of the combined inner tube 1 and the stirring rod. The rotation of the combined inner tube 1 and the inner rod 1 connected thereto can assist in achieving the initial mixing after the thin streams converge. After the first initial mixing is completed, the feed liquid enters the combined inner tube 1 and is diffusely mixed by mixing from the inside to the outside. The mixed material after diffusion mixing is dropped from the channel port 1 and the overall mixing is completed under the stirring of the stirring rod.

[0022] S3: After the mixing is completed in the mixing reaction tank, the liquid outlet pipe enters the filling layer, and the conveyor belt of the filling conveyor line transports the corresponding storage box to the bottom of the corresponding liquid outlet pipe. After the liquid outlet valve is opened, the finished liquid can be filled into the storage box.

[0023] The beneficial effects of the present invention are:

[0024] 1. Since the production rack is provided with multiple groups of evenly distributed and each group of production racks is provided with a corresponding group of mixed reaction layers, the mixed reaction of a group of large mixed reaction tanks can be decomposed into multiple groups of small mixed reaction layers, thereby greatly improving the efficiency of reaction mixing. Moreover, since the production racks are evenly distributed, if the movement distance between two adjacent groups of positioning modules is the same as the spacing between two adjacent groups of production racks, the filling conveyor line is started, and the synchronous filling of multiple groups of filling layers can be completed, thereby greatly improving the production efficiency of mixed filling. At the same time, since the material-liquid transition layer, mixed reaction layer and filling layer on the production rack are distributed from top to bottom, the horizontal occupied space can be reduced, and the utilization of the vertical space can be realized, thereby improving the effective utilization rate of the site;

[0025] 2. With respect to the mixing reaction tank in the invention, since the mixing inlet at the top is also a plurality of groups corresponding to the feed-liquid transition pipes, it can cooperate with the entry of different kinds of raw material solvents or the entry of the same kind of raw material solvents, so that the subdivided raw material liquid can achieve the first convergence in the conical hopper, and at the same time have the first mixing effect, and the feed liquid after the first mixing can be mixed from the inside to the outside after entering the combined inner tube. In this process, the feed liquid completes the convergence mixing from the outside to the inside and the diffusion mixing effect from the inside to the outside again, and when diffusing from the inside to the outside, due to the diffusion of the thin stream and the connection inside Both tube one and the outer convex tube one can play a certain role in strengthening the mixing effect, thereby further improving the uniformity and efficiency of the mixing. After the above-mentioned initial mixing is completed, the stirring rod can assist in achieving the overall mixing. In the above process, the liquid that is later gathered in the mixing reaction tank can be less affected by the liquid that is first gathered in the mixing reaction tank. Each time the original liquid is gathered, it can be preliminarily mixed before being mixed as a whole. At the same time, the mixing process only requires one set of stirring shafts to be achieved, and the setting of the combining hopper one, the combining internal tube one, the connecting inner rod one, and the outer convex tube one can further improve the uniformity and efficiency of the mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a main structural sectional view of the present invention;

[0028] Figure 2 yes Figure 1 A cross-sectional schematic diagram of the local structure of the intermediate material-liquid transition layer and the mixed reaction layer;

[0029] Figure 3 yes Figure 2 The schematic diagram of the structure when the intermediate liquid transition pipe is in the shape of a cross;

[0030] Figure 4 It is a top view of the partition structure in the material-liquid transition layer;

[0031] Figure 5 It is a top view schematic diagram of the distribution of rotating gears and transition gears on the pressing plate;

[0032] Figure 6 yes Figure 1 A side view schematic diagram of the distribution of multiple production racks and filling conveyor lines;

[0033] Figure 7 is a front cross-sectional view of the mixing reaction tank in Example 1;

[0034] Figure 8 is a front cross-sectional view of the mixing reaction tank in Example 2;

[0035] Markings in the figure: 1 is the filling conveyor line, 2 is the production rack, 3 is the material-liquid transition layer, 4 is the mixing reaction layer, 5 is the filling layer, 6 is the mixing reaction tank,

[0036] 11 is a positioning module, 12 is a storage box,

[0037] 31 is a material-liquid transition pipe, 32 is a solenoid valve, 33 is a flow meter, 34 is a transition buffer box, 35 is a transition outlet, 36 is a transition inlet, 37 is a handle, 38 is a partition, 39 is a pressing plate, 310 is a rotating rod, 311 is a stirring paddle, 312 is a rotating gear, 313 is a transition gear, 314 is a screw rod, 315 is a mounting bracket, 316 is a screw motor,

[0038] 61 is a mixing inlet, 62 is a combining hopper, 63 is a combined internal pipe, 64 is a stirring motor, 65 is a stirring shaft, 66 is a connecting inner rod, 67 is an outer convex pipe, 68 is a sealing plate, 69 is a channel opening, 610 is a stirring rod, 611 is a combined external pipe, 612 is a connecting outer rod, 613 is an auxiliary rotating rod, 614 is a reinforced outer convex pipe, 615 is a venting pipe, 616 is a circulation inlet pipe, 617 is a circulation outlet pipe, 618 is a circulation pump, 619 is a control valve, 620 is a combining hopper, 621 is a combined internal pipe, 622 is a sealing plate, 623 is a channel opening,

[0039] 51 is a liquid outlet pipe, 52 is a liquid outlet valve, 53 is a hose, 54 is a cover plate, and 55 is a telescopic cylinder. DETAILED DESCRIPTION

[0040] Example 1

[0041] like Figure 1-7 As shown, a production line for preparing an electrolytic tin stripping agent, in this embodiment, comprises a filling conveying line 1, a plurality of production racks 2 evenly distributed along the conveying direction of the filling conveying line 1, and a liquid transition layer 3, a mixing reaction layer 4 and a filling layer 5 installed on the production racks 2 and distributed sequentially from top to bottom;

[0042] There are multiple groups of positioning modules 11 evenly distributed along the conveyor belt of the filling conveyor line 1 in the circumferential direction. The moving distance between two adjacent groups of positioning modules 11 is the same as the distance between two adjacent groups of production racks 2. A positioning cavity for positioning storage boxes 12 is provided in the positioning module 11. The storage box 12 moves with the conveyor belt to the filling layer 5 corresponding to the production rack 2 for filling the finished product. Since the production rack 2 is provided with multiple groups evenly distributed, and each group of production racks 2 is provided with a corresponding group of mixed reaction layers 4, the mixed reaction originally formed as a group of large mixed reaction tanks 6 can be decomposed into multiple groups of small mixed reaction layers 4. The production racks 2 are evenly distributed, and if the moving distance between two adjacent groups of positioning modules 11 is the same as the spacing between two adjacent groups of production racks 2, the filling conveyor line 1 is started, and the synchronous filling of multiple groups of filling layers 5 can be completed, thereby greatly improving the production efficiency of mixed filling. At the same time, since the material-liquid transition layer 3, the mixed reaction layer 4 and the filling layer 5 on the production rack 2 are distributed from top to bottom, the horizontal space occupied can be reduced, and the vertical space utilization can be realized, thereby improving the effective utilization rate of the site;

[0043] A plurality of groups of feed-liquid transition pipes 31 are arranged at the bottom of the feed-liquid transition layer 3, and a solenoid valve 32 and a flow meter 33 are installed on the feed-liquid transition pipe 31. When the solenoid valve 32 is opened and closed, it can be used to control the feed liquid flowing into the mixed reaction layer 4, and the flow meter 33 can be used to detect the amount of feed liquid flowing into the mixed reaction layer 4. A mixed reaction tank 6 is installed in the mixed reaction layer 4, and a mixing inlet 61 that is docked with the feed-liquid transition pipe 31 is arranged on the top of the mixed reaction tank 6, and a group of conical material combining hoppers 62 are installed inside the mixing hopper 62. The top outer expansion part of the material combining hopper 62 is used to receive the feed liquid entering from the mixing inlet 61, and the bottom contraction part thereof is rotatably connected to a group of internal pipes 63, which are installed in the mixing reaction tank 6. The stirring motor 64 at the top of the tank 6 is driven and connected to a group of stirring shafts 65 extending into the mixing reaction tank 6. The stirring shaft 65 passes through the center of the combined inner tube 63 and is fixedly connected to the combined inner tube 63 by connecting the inner rod 66. The side wall of the combined inner tube 63 is evenly distributed with an outer convex tube 67 extending outward, and the bottom end of the combined inner tube 63 is blocked by a sealing plate 68 sleeved on the outside of the stirring shaft 65. The periphery of the sealing plate 68 is fixed on the inner wall of the mixing reaction tank 6, and a plurality of channel ports 69 are provided thereon. A plurality of stirring rods 610 are also provided outside the stirring shaft 65. The mixed liquid flows into the mixing reaction tank 6 at the bottom through the outer convex tube 67 and the channel port 69, and is stirred by the stirring shaft 65. Continuously stir and mix evenly; and for the mixing reaction tank 6 in the invention, since the mixing inlet 61 at the top is also a plurality of groups corresponding to the feed-liquid transition pipe 31, it can cooperate with the entry of different types of raw material solvents or the entry of the same raw material solvent, so that the subdivided raw material liquid can be converged for the first time in the conical combining hopper 62, and at the same time have the first mixing effect, and the feed liquid after the first mixing can be mixed from the inside to the outside after entering the combining inner tube 63. In this process, the feed liquid completes the convergence mixing from the outside to the inside and the diffusion mixing effect from the inside to the outside again, and when diffusing from the inside to the outside, due to the diffusion of the thin stream and the connection inside Both the tube 1 and the outer convex tube 1 67 can play a certain role in strengthening the mixing effect, so the uniformity and efficiency of the mixing can be further improved. After the above-mentioned initial mixing is completed, the stirring rod 610 can assist in achieving the overall mixing. In the above process, the liquid that is later gathered in the mixing reaction tank 6 can be less affected by the liquid that is first gathered in the mixing reaction tank 6. Each time the original liquid is gathered, it can be preliminarily mixed before being mixed as a whole. At the same time, the mixing process only requires one set of stirring shafts 65 to be realized, and the setting of the combining hopper 1 62, the combined internal tube 1 63, the connecting inner rod 1 66, and the outer convex tube 1 67 can further improve the uniformity and efficiency of the mixing.

[0044] The bottom end of the mixing reaction tank 6 is provided with a liquid outlet pipe 51 connected to the filling layer 5 , and a liquid outlet valve 52 is provided on the liquid outlet pipe 51 .

[0045] At least one layer of combined outer tube 611 is arranged outside the combined inner tube 63, and the combined outer tube 611 and the combined inner tube 63 are fixedly connected by connecting outer rod 612, and multiple groups of auxiliary rotating rods 613 are distributed and fixed outside the outermost combined outer tube 611, and the side wall of the combined outer tube 611 is evenly distributed with reinforced outer convex tubes 614 extending outward, and the bottom end of the combined outer tube 611 is blocked by a sleeve sealing plate 68, and the channel port 69 is located outside the combined outer tube 611. At this time, A combined outer tube 611 coaxially arranged with the combined inner tube 63 is added outside 63. When the stirring shaft 65 drives the combined inner tube 63 to rotate, the combined outer tube 611 also rotates together with the combined inner tube 63. At this time, the connecting inner rod 66, the connecting outer tube and the auxiliary rotating rod 613 can all assist in mixing the feed liquid. The distribution of the combined inner tube 63 and the combined outer tube 611 in layers from inside to outside in sequence also allows the mixed liquid to flow from inside to outside, and each layer of the mixed liquid can be fully and evenly mixed.

[0046] A plurality of transition buffer boxes 34 are arranged in the liquid-slurry transition layer 3. A transition outlet 35 for docking with the liquid-slurry transition pipe 31 is arranged at the bottom of each transition buffer box 34, and a transition inlet 36 for connecting to the raw material storage tank is arranged at the top. A handle 37 for convenient shifting is also arranged on one side of each transition buffer box 34. The arrangement of the transition buffer boxes 34 in the liquid-slurry transition layer 3 can ensure that the original liquid has a certain transition buffer effect before entering the mixed reaction layer 4, thereby avoiding the liquid supply interruption caused by a sudden interruption in the pipeline. Moreover, since the liquid-slurry transition layer 3 is arranged above the mixed reaction layer 4, the liquid itself can complete the flow of the liquid into the mixed reaction layer 4 under the action of gravity, which not only does not occupy the lateral distribution space, but also improves the neatness of the factory building.

[0047] The material-liquid transition layer 3 is separated by partitions 38 to form multiple groups of symmetrically distributed and U-shaped isolation grooves, and the transition buffer box 34 is inserted into the U-shaped open end of the isolation groove and moved to the bottom of the isolation groove. In order to achieve the effect of convenient replacement and cleaning of the transition buffer box 34, the top end opening of the transition buffer box 34 can be set, and the top of the material-liquid transition layer 3 is provided with a pressing plate 39 connected to the top of the partition 38 and pressed at the end opening of the transition buffer box 34. At this time, due to the addition of the partition 38 and the pressing plate 39 and the cooperation with the transition buffer box 34, when the transition buffer box 34 needs to be removed, it is only necessary to loosen the pressing plate 39 and quickly remove the transition buffer from the isolation groove, which is more convenient, and the pressing plate 39 can also make the transition outlet 35 at the bottom of the transition buffer box 34 connected to the material-liquid transition pipe 31 can be sealed and pressed at the material-liquid transition pipe 31 to avoid fluid leakage.

[0048] In order to ensure that the slurry in each group of transition buffer boxes 34 can always maintain a uniform effect, a plurality of groups of rotating rods 310 corresponding to the transition buffer boxes 34 can be rotatably connected to the pressing plate 39, and a stirring paddle 311 is provided on the rotating rod 310, and a rotating gear 312 is fixed to the end thereof extending out of the pressing plate 39. A group of transition gears 313 located between two symmetrically distributed groups of rotating gears 312 are also provided at the center of the pressing plate 39, and two adjacent groups of transition gears 313 are meshed and connected, and one group of transition gears 313 is connected to the driving motor installed on the pressing plate 39.

[0049] In order to realize the automatic pressing of the pressing plate 39, a plurality of sets of screw rods 314 can be threadedly connected in the partition 38, and a mounting frame 315 is provided on the pressing plate 39. A screw motor 316 for driving the screw rod 314 to rotate is installed on the mounting frame 315. At this time, when the screw motor 316 starts to drive the screw rod 314 to rotate, the pressing plate 39 can be driven to rise until the rotating rod 310 inserted into the corresponding transition buffer box 34 is completely removed from the transition buffer box 34. At this time, the handle 37 of the transition buffer box 34 can be held to quickly pull the transition buffer box 34 out of the isolation groove. At this time, in order to improve the sealing effect of the pressing seal, a sealing ring can be provided at the joint between the bottom end of the feed-liquid transition pipe 31 and the mixing inlet 61 and at the joint between the top end of the feed-liquid transition pipe 31 and the transition outlet 35 for docking sealing.

[0050] A vent pipe 615 and a circulation inlet pipe 616 are also provided on the top of the mixing reaction tank 6, and a control valve 1 is provided on the vent pipe 615 and the circulation inlet pipe 616. The setting of the vent pipe 615 can facilitate the timely removal of gas that may be generated during mixing, thereby preventing the pressure in the mixing reaction tank 6 from changing, thereby affecting the entry and outflow of the material liquid. The circulation inlet pipe 616 is set above the combining hopper 1 62. When it is located above the combining hopper 1 62, the circulating material liquid can achieve mixing of the combining hopper 1 62 and the combining hopper 2 620, and a circulation outlet pipe 617 is also provided at the bottom of the mixing reaction tank 6. The circulation outlet pipe 617 is connected to the circulation inlet pipe 616 through the control valve 2 619 and the circulation pump 618.

[0051] The end of the liquid outlet pipe 51 is also connected to a set of covering plates 54 through a hose 53. The covering plates 54 are driven by a telescopic cylinder 55 installed on the filling layer 5 and are used to cover the box inlet of the storage box 12 below under the drive of the telescopic cylinder 55, thereby preventing splashing of liquid during filling.

[0052] Example 2

[0053] like Figure 1-7As shown, a production line for preparing an electrolytic tin stripping agent is shown. In this embodiment, the difference from Example 1 is that at least one group of conical combining hoppers 620 is also arranged between the sealing plate 68 and the stirring rod 610. The top outer expansion opening of the combining hopper 620 is used to receive the material liquid entering from the channel opening 69, and the bottom contraction opening thereof is rotatably connected to a combination of inner tubes 621. The stirring shaft 65 passes through the center of the combined inner tube 621 and is fixedly connected to the combined inner tube 621 by connecting the inner rod 2. The side walls of the combined inner tube 621 are evenly distributed with outer convex tubes 2 extending outward, and the bottom end of the combined inner tube 621 is blocked by a sealing plate 622 sleeved on the outside of the stirring shaft 65. The periphery of the sealing plate 622 is fixed on the inner wall of the mixing reaction tank 6, and a plurality of channel openings 623 are also provided thereon. The mixed material liquid flows into the mixing reaction tank 6 at the bottom through the outer convex tubes 2 and the channel openings 623, and is continuously stirred and mixed evenly by the stirring shaft 65.

[0054] Example 3

[0055] A method for preparing an electrolytic tin stripping agent, based on the above-mentioned production line for preparing an electrolytic tin stripping agent, comprises the following steps:

[0056] S1: The feed liquid transition pipe 31 of the feed liquid transition layer 3 is connected to the corresponding original feed liquid tank, and the mixing and feeding of the original feed liquid is achieved through the feed pump;

[0057] S2: The original liquid entering the liquid-to-feed transition pipe 31 enters the mixing reaction tank 6 through the mixing inlet 61, and converges the fine streams in the combining hopper 62 until it converges into the combined inner tube 63. At this time, the stirring motor 64 drives the stirring shaft 65 to rotate, thereby driving the combined inner tube 63 and the stirring rod 610 to rotate. The rotation of the combined inner tube 63 and the inner rod 66 connected thereto can assist in achieving the initial mixing after the fine streams converge. After the liquid enters the combined inner tube 63 after the initial mixing, it adopts the mixing method from inside to outside to complete the diffusion mixing. The mixed material after the diffusion mixing is dropped from the channel port 69 and the overall mixing is completed under the stirring of the stirring rod 610.

[0058] S3: After the mixing is completed in the mixing reaction tank 6, the liquid outlet pipe 51 enters the filling layer 5, and the conveyor belt of the filling conveyor line 1 transports the corresponding storage box 12 to the bottom of the corresponding liquid outlet pipe 51. After the liquid outlet valve 52 is opened, the finished liquid can be filled into the storage box 12.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A production line for preparing an electrolytic tin stripping agent, characterized in that: It comprises a filling conveyor line (1), a plurality of production racks (2) evenly distributed along the conveying direction of the filling conveyor line (1), and a material-liquid transition layer (3), a mixing reaction layer (4) and a filling layer (5) which are installed on the production racks (2) and are distributed in sequence from top to bottom; A plurality of groups of positioning modules (11) are evenly distributed along the circumferential direction on the conveyor belt of the filling conveyor line (1), the moving distance between two adjacent groups of positioning modules (11) is the same as the distance between two adjacent groups of production racks (2), and a positioning cavity for positioning a storage box (12) is provided in the positioning module (11), and the storage box (12) moves with the conveyor belt to the filling layer (5) of the corresponding production rack (2) to fill the finished product; A plurality of groups of feed-liquid transition pipes (31) are arranged at the bottom of the feed-liquid transition layer (3), and a solenoid valve (32) and a flow meter (33) are installed on the feed-liquid transition pipes (31). A mixing reaction tank (6) is installed in the mixing reaction layer (4), and a mixing inlet (61) that is docked with the feed-liquid transition pipe (31) is arranged on the top of the mixing reaction tank (6), and a group of conical material combining hoppers (62) are installed inside the mixing reaction tank. The top outer expansion part of the mixing hopper (62) is used to receive the feed liquid entering from the mixing inlet (61), and the bottom contraction part is rotatably connected to a group of internal pipes (63). A stirring motor (64) installed on the top of the mixing reaction tank (6) is driven and connected to a group of stirring shafts (65) extending into the mixing reaction tank (6). ), the stirring shaft (65) passes through the center of the combined inner tube (63) and is fixedly connected to the combined inner tube (63) by connecting an inner rod (66), the side wall of the combined inner tube (63) is evenly distributed with an outer convex tube (67) extending outward, and the bottom end of the combined inner tube (63) is blocked by a sealing plate (68) sleeved on the outside of the stirring shaft (65), the periphery of the sealing plate (68) is fixed on the inner wall of the mixing reaction tank (6), and a plurality of channel openings (69) are also provided thereon, and a plurality of stirring rods (610) are also provided outside the stirring shaft (65), the mixed liquid flows into the mixing reaction tank (6) at the bottom through the outer convex tube (67) and the channel opening (69), and is continuously stirred and mixed by the stirring shaft (65); The bottom end of the mixing reaction tank (6) is provided with a liquid outlet pipe (51) connected to the filling layer (5), and the liquid outlet pipe (51) is provided with a liquid outlet valve (52); At least one layer of combined outer tube (611) is also provided outside the combined inner tube (63); the combined outer tube (611) and the combined inner tube (63) are fixedly connected via a connecting outer rod (612); and a plurality of groups of auxiliary rotating rods (613) are distributed and fixed outside the outermost combined outer tube (611); reinforced outer convex tubes (614) extending outward are evenly distributed on the side wall of the combined outer tube (611); and the bottom end of the combined outer tube (611) is sealed by a sleeve sealing plate (68); and a channel opening (69) is located outside the combined outer tube (611); At least one group of conical material combining hoppers (620) are also provided between the sealing plate (68) and the stirring rod (610). The top outer expansion opening of the material combining hopper (620) is used to receive the liquid entering from the channel opening (69). The bottom contraction opening is rotatably connected to a combined internal tube (621). The stirring shaft (65) passes through the center of the combined internal tube (621) and is fixedly connected to the combined internal tube (621) by connecting the internal rod (610). The combined internal tube (621) is connected to the stirring shaft (65). 1) is evenly distributed on the side wall thereof with two external convex tubes extending outward, and the bottom end of the two combined internal tubes (621) is blocked by two sealing plates (622) sleeved on the outside of the stirring shaft (65), the periphery of the two sealing plates (622) is fixed on the inner wall of the mixing reaction tank (6), and a plurality of two channel openings (623) are provided thereon, the mixed liquid flows into the mixing reaction tank (6) at the bottom through the two external convex tubes and the two channel openings (623), and is continuously stirred and mixed evenly by the stirring shaft (65).

2. The production line for preparing an electrolytic tin stripping agent according to claim 1, characterized in that: A plurality of transition buffer boxes (34) are arranged in the material-liquid transition layer (3), and a group of transition outlets (35) for docking with the material-liquid transition pipe (31) are arranged at the bottom of each group of transition buffer boxes (34), and a group of transition inlets (36) for connecting with the raw material storage tank are arranged at the top thereof, and a handle (37) for convenient shifting is also arranged on one side of each group of transition buffer boxes (34).

3. A production line for preparing an electrolytic tin stripping agent according to claim 2, characterized in that: The material-liquid transition layer (3) is separated by partitions (38) to form a plurality of symmetrically distributed and U-shaped isolation grooves, and the transition buffer box (34) is inserted from the U-shaped opening end of the isolation groove and moves to abut against the bottom of the isolation groove. The top end of the transition buffer box (34) is open, and the top of the material-liquid transition layer (3) is provided with a pressing plate (39) connected to the top end of the partition (38) and pressed on the end opening of the transition buffer box (34).

4. The production line for preparing an electrolytic tin stripping agent according to claim 3, characterized in that: The pressing plate (39) is rotatably connected to a plurality of rotating rods (310) corresponding to the transition buffer box (34); the rotating rods (310) are provided with stirring paddles (311), and one end thereof extending out of the pressing plate (39) is fixed with a rotating gear (312); a group of transition gears (313) located between two symmetrically distributed groups of rotating gears (312) is also provided at the center of the pressing plate (39), and two adjacent groups of transition gears (313) are meshedly connected, and one group of transition gears (313) is drivingly connected to a driving motor installed on the pressing plate (39).

5. The production line for preparing an electrolytic tin stripping agent according to claim 4, characterized in that: The partition plate (38) is also threadedly connected with a plurality of screw rods (314). The pressing plate (39) is provided with a mounting frame (315). The mounting frame (315) is provided with a screw motor (316) for driving the screw rods (314) to rotate. The bottom end of the feed-liquid transition pipe (31) is connected to the mixing inlet (61) and the top end of the feed-liquid transition pipe (31) is connected to the transition outlet (35) with a sealing ring for docking and sealing.

6. The production line for preparing an electrolytic tin stripping agent according to claim 1, characterized in that: The top of the mixing reaction tank (6) is also provided with a venting pipe (615) and a circulation inlet pipe (616), and the venting pipe (615) and the circulation inlet pipe (616) are both provided with a control valve 1. The circulation inlet pipe (616) is arranged above the first mixing hopper (62) or below the second mixing hopper (620) at the bottom, and the bottom of the mixing reaction tank (6) is also provided with a circulation outlet pipe (617), and the circulation outlet pipe (617) is connected to the circulation inlet pipe (616) via a control valve 2 (619) and a circulation pump (618).

7. The production line for preparing an electrolytic tin stripping agent according to claim 1, characterized in that: The end of the liquid outlet pipe (51) is also connected to a set of covering plates (54) through a hose (53). The covering plates (54) are connected to a telescopic cylinder (55) installed on the filling layer (5) and are used to cover the box inlet of the storage box (12) below under the drive of the telescopic cylinder (55).

8. A method for preparing an electrolytic tin stripping agent, characterized in that: A production line for preparing an electrolytic tin stripping agent according to any one of claims 1 to 7, comprising the following steps: S1: The feed liquid transition pipe (31) of the feed liquid transition layer (3) is connected to the corresponding original feed liquid tank, and the mixing and feeding of the original feed liquid is achieved through the feed pump; S2: The original liquid material entering the liquid material transition pipe (31) enters the mixing reaction tank (6) through the mixing inlet (61), and converges into the fine streams in the combining hopper (62), until it converges into the combined inner tube (63). At this time, the stirring motor (64) drives the stirring shaft (65) to rotate, thereby driving the combined inner tube (63) and the stirring rod (610) to rotate. The rotation of the combined inner tube (63) and the inner rod (66) connected thereto can assist in achieving the initial mixing after the fine streams converge. After the first initial mixing is completed, the liquid material enters the combined inner tube (63), and is diffusely mixed by mixing from the inside to the outside. The mixed material after the diffusion mixing is dropped from the channel opening (69) and the overall mixing is completed under the stirring of the stirring rod (610); S3: After the mixing is completed in the mixing reaction tank (6), the liquid outlet pipe (51) enters the filling layer (5), and the conveyor belt of the filling conveyor line (1) conveys the corresponding storage box (12) to the bottom of the corresponding liquid outlet pipe (51). After the liquid outlet valve (52) is opened, the finished liquid can be filled into the storage box (12).

Images