Automatic solution feeding system used in silver powder extraction process

Abstract

The utility model discloses an automatic solution feeding system used in a silver powder extraction process. The automatic solution feeding system used in the silver powder extraction process comprises a connecting base and a PLC control module arranged on one side of the outer wall of the upper end of the connecting base, multiple sets of solution raw material barrels, a first liquid outlet pump, an intermediate tank and a peristaltic pump are arranged on the inner wall of the connecting base from top to bottom, and a reaction kettle is arranged at the lower end of the connecting base; the solution raw material barrel, the first liquid outlet pump, the intermediate tank, the peristaltic pump and the reaction kettle are communicated with one another through a liquid conveying pipeline. Compared with the prior art, the automatic feeding system disclosed by the utility model is simple in structure, contributes to remarkably improving the extraction accuracy of an auxiliary agent, and can also greatly reduce the labor cost and the batch scrapping risk.

Description

TECHNICAL FIELD

[0001] The utility model relates to silver powder manufacturing technical field especially relates to a kind of automatic feeding system for solution in silver powder extraction process. BACKGROUND

[0002] In the conventional silver powder manufacturing process, it is generally necessary to manually add and weigh a plurality of additives, but there are many problems such as high labor intensity, the need for many workers, and low efficiency. Moreover, during frequent weighing, there are often cases of over-weighing or under-weighing, which easily leads to great waste of additives and the risk of scrapping of batches of silver powder, thereby greatly increasing the production cost of the enterprise.

[0003] In recent years, some manufacturers have added a feeding and weighing device to the silver powder production equipment in order to reduce the labor intensity of the workers and the error rate of weighing. However, the existing feeding and weighing devices mostly adopt a one-to-one weighing method, that is, one additive corresponds to one pump, one valve, and one pipeline. When the additive needs to be weighed, the corresponding diaphragm pump is opened, and the additive is extracted through the corresponding pipeline. Such a system has a complex structure, high cost, and is difficult to manufacture and maintain. At the same time, the equipment has a high failure rate and low reliability, which seriously affects the production efficiency of the enterprise. SUMMARY

[0004] The main purpose of the utility model is to provide an automatic feeding system for solution in the silver powder extraction process to overcome the shortcomings of the prior art.

[0005] To solve the above technical problems, the utility model provides the following technical scheme.

[0006] Some embodiments of the utility model provide an automatic feeding system for solution in the silver powder extraction process, which comprises a connecting seat, a PLC control module, a plurality of groups of solution raw material barrels, a first liquid outlet pump, an intermediate tank, and a peristaltic pump. The lower end of the connecting seat is provided with a reaction kettle. The solution raw material barrels, the first liquid outlet pump, the intermediate tank, the peristaltic pump, and the reaction kettle are connected to each other through liquid conveying pipelines. A first pneumatic valve is arranged on the liquid conveying pipeline between the intermediate tank and the peristaltic pump. The reaction kettle is connected with a stirring assembly. A plurality of groups of additive raw material barrels, a second liquid outlet pump, and an additive tank are arranged on the outer wall of the connecting seat from top to bottom. The additive raw material barrels, the second liquid outlet pump, the additive tank, and the reaction kettle are connected to each other through liquid conveying pipelines. A second pneumatic valve is arranged on the liquid conveying pipeline between the second liquid outlet pump and the additive tank. An angle seat valve is arranged on the liquid conveying pipeline between the additive tank and the reaction kettle. The intermediate tank and the additive tank are each provided with a weighing assembly. The first liquid outlet pump, the second liquid outlet pump, the peristaltic pump, and the weighing assembly are respectively connected with the PLC control module.

[0007] In one embodiment, the stirring assembly comprises a connecting frame fixed to the upper end of the reaction kettle, the outer wall of the connecting frame is provided with a motor, the output end of the motor is in transmission connection with a rotating shaft, and the lower part of the rotating shaft penetrates into the reaction kettle and is connected with stirring paddles.

[0008] In one embodiment, the output end of the motor is provided with a first bevel gear, the upper end and the lower end of the first bevel gear are respectively provided with a second bevel gear and a third bevel gear, the first bevel gear, the second bevel gear and the third bevel gear are in meshing with each other, the rotating shaft is fixedly installed at the lower end of the second bevel gear, and the lower end of the third bevel gear is fixedly provided with a sleeve frame.

[0009] In one embodiment, the first bevel gear, the second bevel gear and the third bevel gear are all installed above the reaction kettle, the sleeve frame and the stirring paddles are all arranged in the reaction kettle, the sleeve frame is located above the highest liquid level in the inner cavity of the reaction kettle, and the stirring paddles are arranged below the sleeve frame.

[0010] In one embodiment, the lower end of the sleeve frame is rotatably provided with a plurality of gears, the upper end of the inner wall of the reaction kettle is fixedly provided with a gear ring, the gears and the gear ring are in meshing with each other, and the lower end of each group of gears is provided with a group of stirring paddles.

[0011] In one embodiment, a plurality of groups of the stirring paddles are symmetrically arranged.

[0012] In one embodiment, a plurality of groups of through holes are arranged on the stirring paddles, and the through holes penetrate the stirring paddles in the thickness direction.

[0013] In one embodiment, the weighing assembly comprises a sliding rod fixedly arranged on the inner walls of the intermediate tank and the auxiliary tank, a sliding sleeve movably arranged on the outer wall of the sliding rod, a weight sensor fixedly arranged on the inner wall of the sliding sleeve at the lower end of the sliding sleeve, and a weighing cylinder arranged on the sliding sleeve.

[0014] In one embodiment, the liquid outlet end of the weighing cylinder is provided with a liquid passing valve.

[0015] In one embodiment, the first pneumatic valve, the second pneumatic valve and the angle seat valve are also respectively electrically connected with the PLC control module.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] 1. The utility model discloses a simple structure and can greatly reduce the cost, and the control is through the PLC program control and carries out the feeding and the discharge, and with pneumatic valve and weighing assembly form closed loop control and realize the quantitative extraction of target auxiliary agent, and this control mode can realize the accurate extraction of solution, avoids the phenomenon of too much or too little, thereby further improves the extraction accuracy of auxiliary agent, and greatly reduces the artificial cost and the batch rejection risk caused by too much or too little of artificial feeding.

[0018] 2. The utility model discloses a stirring assembly can effectively improve the reaction mass transfer efficiency in the reaction kettle, improve the reaction rate and reaction uniformity, improve silver powder product quality. ACCURACY

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings. Among them:

[0020] Figure 1 For the overall front perspective structure schematic diagram of a kind of automatic feeding system of solution for silver powder extraction process provided in an embodiment of the utility model;

[0021] Figure 2 For the partial section perspective structure schematic diagram of a kind of automatic feeding system of solution for silver powder extraction process provided in an embodiment of the utility model;

[0022] Figure 3 For the weighing assembly perspective structure schematic diagram of a kind of automatic feeding system of solution for silver powder extraction process provided in an embodiment of the utility model;

[0023] Figure 4 For the stirring assembly perspective structure schematic diagram of a kind of automatic feeding system of solution for silver powder extraction process provided in an embodiment of the utility model.

[0024] Figure legend explanation: 1, connecting seat;2, PLC control module;3, solution raw material bucket;4, first liquid pump;5, intermediate tank;6, peristaltic pump;7, reaction kettle;8, first pneumatic valve;9, stirring assembly;901, connecting frame;902, motor;903, first bevel gear;904, second bevel gear;905, third bevel gear;906, shaft;907, sleeve;908, gear;909, gear ring;910, stirring paddle;10, auxiliary raw material bucket;11, second liquid pump;12, auxiliary tank;13, second pneumatic valve;14, angle seat valve;15, weighing assembly;151, weighing cylinder;152, slide bar;153, slide sleeve;154, weight sensor;155, liquid valve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, in this utility model, descriptions involving "first," "first," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "first," etc., may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] like Figures 1-3 As shown in the figure, this embodiment provides an automatic solution feeding system for silver powder extraction, including a connecting base 1, a PLC control module 2, multiple sets of solution raw material tanks 3, a first liquid discharge pump 4, an intermediate tank 5, and a peristaltic pump 6. A reaction vessel 7 is located at the lower end of the connecting base 1. The solution raw material tanks 3, the first liquid discharge pump 4, the intermediate tank 5, the peristaltic pump 6, and the reaction vessel 7 are interconnected via liquid conveying pipes. A first pneumatic valve 8 is installed on the liquid conveying pipe between the intermediate tank 5 and the peristaltic pump 6. A [missing information - likely a device or component] is connected to the reaction vessel 7. The stirring assembly 9 and the connecting seat 1 are equipped with multiple sets of auxiliary raw material tanks 10, a second liquid discharge pump 11, and an auxiliary agent tank 12 from top to bottom on the outer wall. The auxiliary raw material tanks 10, the second liquid discharge pump 11, the auxiliary agent tank 12 and the reaction vessel 7 are interconnected by liquid conveying pipes. A second pneumatic valve 13 is provided on the liquid conveying pipe between the second liquid discharge pump 11 and the auxiliary agent tank 12. An angle seat valve 14 is provided on the liquid conveying pipe between the auxiliary agent tank 12 and the reaction vessel 7. Weighing components 15 are provided inside the intermediate tank 5 and the auxiliary agent tank 12.

[0029] The weighing assembly 15 comprises a sliding rod 152 fixed on the inner wall of the intermediate tank 5 and the additive tank 12, a sliding sleeve 153 movably sleeved on the outer wall of the sliding rod 152, a weight sensor 154 fixed on the inner wall of the sliding sleeve 153 at the lower end of the intermediate tank 5 and the additive tank 12, and a weighing cylinder 151 arranged on the sliding sleeve 153, wherein a liquid passage valve 155 is arranged at the liquid outlet end of the lower end of the weighing cylinder 151.

[0030] The first liquid outlet pump 4, the peristaltic pump 6, the first pneumatic valve 8, the second liquid outlet pump 11, the second pneumatic valve 13, the angle seat valve 14 and the weight sensor 154 are electrically connected with the PLC control module 2.

[0031] The solution entering the intermediate tank 5 and the second pneumatic valve 13 will fall into the weighing cylinder 151, the weight of the weighing cylinder 151 gradually increases, the sliding sleeve 153 has a downward sliding trend along the sliding rod 152 and has a force acting on the weight sensor 154, and the value of the gravity transmitted by the weight sensor 154 is used to determine whether the weight of the solution in the weighing cylinder 151 meets the requirements, and when the weight of the solution meets the requirements, the program will open the liquid passage valve 155, and the solution in the weighing cylinder 151 will enter the reaction kettle 7.

[0032] The first step: after the program is started, the first liquid outlet pump 4 of the solution raw material barrel 3 is started, and the intermediate tank 5 and the additive tank 12 start weighing determination at the same time, the second step: when the weighing determination of the intermediate tank 5 and the additive tank 12 meets the conditions, the program automatically stops the first liquid outlet pump 4 of the solution raw material barrel 3, the third step: then the first pneumatic valve 8 at the lower end of the intermediate tank 5 and the peristaltic pump 6 are opened, the solution flows downward by its own gravity, and the characteristics of the peristaltic pump 6 can ensure that each solution can enter the reaction kettle 7 at a constant speed, the fourth step: through the weighing determination of the intermediate tank 5, when the weight of the solution entering the reaction kettle 7 meets the requirements, the program automatically closes the first pneumatic valve 8 below the intermediate tank 5 and the peristaltic pump 6, the fifth step: when the program of the fourth step is completed, the program opens the angle seat valve 14 below the additive tank 12, and the additive flows downward by its own gravity, and when the weighing of the additive tank 12 shows “0”, the angle seat valve 14 below the additive tank 12 is closed. Compared with the existing manual method, the structure is simple and the cost can be greatly reduced. The control is carried out by the PLC program control, and a closed loop control is formed with the pneumatic valve and the weighing assembly 15 to realize the quantitative extraction of the target additive. The control method can realize the accurate extraction of the solution, avoid the phenomenon of too much or too little extraction, and further improve the extraction accuracy of the additive, thereby greatly reducing the labor cost and the risk of batch rejection caused by too much or too little manual feeding.

[0033] As Figure 1 and Figure 4As shown, the reaction kettle 7 is connected with a stirring assembly 9, which comprises a connecting frame 901 fixed to the upper end of the reaction kettle 7, and a motor 902 arranged on the outer wall of the connecting frame 901. The output end of the motor 902 is provided with a first bevel gear 903, and the upper end and lower end of the first bevel gear 903 are respectively provided with a second bevel gear 904 and a third bevel gear 905. The first bevel gear 903 and the second bevel gear 904 and the third bevel gear 905 are in meshing with each other. The lower end of the second bevel gear 904 is fixedly provided with a rotating shaft 906, and the lower end of the third bevel gear 905 is fixedly provided with a sleeve frame 907. The rotating shaft 906 is movably arranged through the third bevel gear 905 and the sleeve frame 907 from top to bottom. The outer wall of the lower end of the rotating shaft 906 is provided with a stirring paddle 910. The lower end of the sleeve frame 907 is rotatably provided with a plurality of gears 908. The inner wall of the upper end of the reaction kettle 7 is fixedly provided with a gear ring 909. The gears 908 and the gear ring 909 are in meshing with each other. The lower end of each group of gears 908 is provided with a group of stirring paddles 910. The plurality of groups of stirring paddles 910 are symmetrically distributed. In this way, the stirring uniformity of the liquid phase reaction material in the reaction kettle can be improved. Further, a plurality of through holes are arranged on the stirring paddles 910, which penetrate the stirring paddles along the thickness direction, so that the mass transfer efficiency of the liquid phase reaction material can be improved, and the reaction rate and uniformity can be improved.

[0034] When the solution and the auxiliary agent enter the reaction kettle 7 for reaction, the motor 902 is started to drive the first bevel gear 903 to rotate, which drives the second bevel gear 904 and the third bevel gear 905 to rotate. The second bevel gear 904 drives the rotating shaft 906 to rotate, which drives the stirring paddles 910 below the sleeve frame 907 to rotate, so as to stir the solution and the auxiliary agent at the center of the reaction kettle 7. In the process of rotating the third bevel gear 905, the third bevel gear 905 drives the sleeve frame 907 to rotate, which drives the gears 908 to rotate around the center of the third bevel gear 905. The gears 908 make circular motion along the gear ring 909, so that the gear ring 909 drives the gears 908 to rotate. The gears 908 below drive the stirring paddles 910 to rotate around the center of the third bevel gear 905, and at the same time, the gears 908 drive the stirring paddles 910 to rotate around their own axes. The rotating directions of the sleeve frame 907 and the rotating shaft 906 are opposite, so as to cooperate with the stirring paddles 910 to fully stir the solution in the reaction kettle 7, accelerate the reaction rate, make the solution and the auxiliary agent react more fully, and make the prepared silver powder have a narrower particle size distribution, a more uniform morphology and a higher quality.

[0035] It should be understood that the use of these embodiments is by way of illustration only and is not intended to limit the scope of the present application. In addition, it should also be understood that, after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all of these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A system for automatic feeding of a solution in a silver powder extraction process, characterized in that, The utility model provides a kind of reaction kettle, including connecting seat (1), PLC control module (2), multiple groups of solution raw material barrels (3), first liquid pump (4), intermediate tank (5) and peristaltic pump (6), the connecting seat (1) lower end is equipped with reaction kettle (7), the solution raw material barrel (3), first liquid pump (4), intermediate tank (5), peristaltic pump (6) and reaction kettle (7) are communicated with each other by liquid delivery pipeline, first pneumatic valve (8) is equipped on the liquid delivery pipeline between intermediate tank (5) and peristaltic pump (6), stirring assembly (9) is connected on reaction kettle (7), the outer wall of connecting seat (1) is equipped with multiple groups of auxiliary raw material barrels (10) from top to bottom, second liquid pump (11) and auxiliary tank (12), the auxiliary raw material barrel (10), second liquid pump (11), auxiliary tank (12) and reaction kettle (7) are communicated with each other by liquid delivery pipeline, second pneumatic valve (13) is equipped on the liquid delivery pipeline between second liquid pump (11) and auxiliary tank (12), angular seat valve (14) is equipped on the liquid delivery pipeline between auxiliary tank (12) and reaction kettle (7), weighing assembly (15) is equipped inside intermediate tank (5), auxiliary tank (12), first liquid pump (4), second liquid pump (11), peristaltic pump (6) and weighing assembly (15) are connected with PLC control module (2) respectively.

2. The automatic solution feeding system for silver powder extraction process according to claim 1, characterized in that: The stirring assembly (9) includes a connecting frame (901) fixed to the upper end of the reaction kettle (7), the outer wall of the connecting frame (901) is provided with a motor (902), the output end of the motor (902) is in transmission connection with a rotating shaft (906), and the lower part of the rotating shaft (906) penetrates into the reaction kettle (7) and is connected with a stirring paddle (910).

3. The automatic solution feeding system for silver powder extraction process according to claim 2, characterized in that: The output end of the motor (902) is provided with a first bevel gear (903), the upper end and the lower end of the first bevel gear (903) are respectively provided with a second bevel gear (904) and a third bevel gear (905), the first bevel gear (903) and the second bevel gear (904), the third bevel gear (905) are in meshing with each other, the rotating shaft (906) is fixedly installed at the lower end of the second bevel gear (904), and the lower end of the third bevel gear (905) is fixedly provided with a sleeve frame (907), the rotating shaft (906) passes through the third bevel gear (905) and the sleeve frame (907) from top to bottom.

4. The automatic solution feeding system for silver powder extraction process according to claim 3, characterized in that: The first bevel gear (903), the second bevel gear (904) and the third bevel gear (905) are all installed above the reaction kettle (7), the sleeve frame (907) and the stirring paddle (910) are both arranged in the reaction kettle (7), the sleeve frame (907) is located above the highest liquid level in the inner cavity of the reaction kettle (7), and the stirring paddle (910) is arranged below the sleeve frame (907).

5. The automatic solution feeding system for silver powder extraction process according to any one of claims 3-4, characterized in that: The lower end of the sleeve frame (907) is rotatably provided with a plurality of gears (908), the upper end of the inner wall of the reaction kettle (7) is fixedly provided with a gear ring (909), the gears (908) and the gear ring (909) are in meshing with each other, and the lower end of each group of gears (908) is provided with a group of stirring paddles (910).

6. The automatic solution feeding system for silver powder extraction process according to claim 5, characterized in that: Multiple groups of the stirring blades (910) are symmetrically arranged.

7. The automatic solution feeding system for silver powder extraction process according to claim 2, characterized in that: Multiple groups of through holes are arranged on the stirring blades (910), and the through holes penetrate the stirring blades in the thickness direction.

8. The automatic solution feeding system for silver powder extraction process according to claim 1, characterized in that: The weighing assembly (15) comprises a sliding rod (152) fixed to the inner walls of the intermediate tank (5) and the auxiliary tank (12), the outer wall of the sliding rod (152) movably sleeves a sliding sleeve (153), the inner walls of the intermediate tank (5) and the auxiliary tank (12) located at the lower end of the sliding sleeve (153) are fixedly provided with a weight sensor (154), and the sliding sleeve (153) is provided with a weighing cylinder (151).

9. The automatic solution feeding system for silver powder extraction process according to claim 8, characterized in that: A liquid passing valve (155) is arranged at the liquid outlet end of the lower end of the weighing cylinder (151).

10. The automatic solution feeding system for silver powder extraction process according to claim 1, characterized in that: The first pneumatic valve (8), the second pneumatic valve (13) and the angle seat valve (14) are also electrically connected with the PLC control module (2) respectively.

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