Hydro-thermal treatment device for preparing superfine silver powder

Abstract

The utility model relates to the technical field of treatment devices, in particular to a hydro-thermal treatment device for preparing superfine silver powder, which comprises a treatment tank and a tank cover connected to the top of the treatment tank, and a hydro-thermal interlayer is arranged between the inner wall and the outer wall of the treatment tank. An annular pipe is mounted at the bottom of the tank cover, an annular inclined plate connected to the inner wall of the treatment tank is arranged at the bottom of the annular pipe, and a plurality of liquid outlet heads facing the annular inclined plate are connected to the bottom of the annular pipe; the tank cover is rotationally connected with a hollow pipe extending into the treatment tank; the driving mechanism drives the second belt wheel to rotate, the hollow pipe to rotate, the stirring frame stirs materials, the linkage mechanism drives the supporting rod and the hollow pipe to rotate reversely, under the action of the spiral blade, a solution is stirred in an auxiliary mode, meanwhile, part of the solution is conveyed to the top of an inner cavity of the hollow pipe through rotation of the spiral blade and sprayed out from the liquid outlet, and the stirring effect is good. The sprayed liquid is sprayed to foam for defoaming, and meanwhile, the mixing uniformity of the solution is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing devices, in particular to a hydrothermal processing device for preparing ultrafine silver powder. Background Art

[0002] The main raw materials for preparing ultrafine silver powder include silver salts (such as silver nitrate and silver acetate), reducing agents (such as ascorbic acid, sodium borohydride, and glucose), and possible dispersants (such as methylcellulose, Tween, and gum arabic) and additives. The silver salt is dissolved in a solvent to form a silver salt solution. Appropriate amounts of reducing agent and dispersant are added to the silver salt solution, and the reaction temperature and pH value are controlled. The solution is reacted and then filtered, washed, dried, and other subsequent treatments are performed to obtain the ultrafine silver powder product.

[0003] The existing patent announcement number CN220737503U discloses a reduction reaction stirring device for silver powder production, which includes a stirring kettle, a motor, a stirring shaft, a stirring paddle, a defoaming pipe, a water pump, and a thermometer. The side wall of the stirring kettle constitutes a hexagonal kettle body, and a top cover is provided on the top of the kettle body. The motor is installed above the top cover through a machine base. The upper end of the stirring shaft is connected to the power output end of the motor, and the lower end passes through a through hole on the top cover and extends into the bottom of the stirring kettle. The stirring paddle is installed on the stirring shaft. The defoaming pipe is annularly installed at the top of the stirring kettle. Rotating nozzles are evenly installed at the bottom of the defoaming pipe. The output end of the water pump is connected to the defoaming pipe through a water pipe. The thermometer is installed on the side wall of the stirring kettle; a defoaming pipe, a water pump, a thermometer and a defoaming rod are provided. The defoaming rod can rotate continuously to break bubbles. The defoaming pipe can spray cold water to break bubbles and reduce the liquid surface temperature to prevent a large amount of bubbles from overflowing after the temperature continues to rise.

[0004] The above device can be used for reduction reaction and stirring in silver powder production, and can be used for defoaming during use. However, stirring requires the delivery of cold water for defoaming, which affects the progress of the reaction and needs to be improved. To address the above problems, a hydrothermal treatment device for the preparation of ultrafine silver powder is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a hydrothermal treatment device for preparing ultrafine silver powder, so as to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A hydrothermal treatment device for preparing ultrafine silver powder comprises a treatment tank and a tank cover connected to the top of the treatment tank, wherein a hydrothermal interlayer is provided between the inner wall and the outer wall of the treatment tank;

[0008] An annular tube is installed at the bottom of the tank cover, and an annular inclined plate connected to the inner wall of the treatment tank is provided at the bottom of the annular tube. A plurality of liquid outlet heads arranged toward the annular inclined plate are connected to the bottom of the annular tube;

[0009] The tank cover is rotatably connected to a hollow tube extending into the processing tank, the hollow tube is connected to a stirring frame, the top of the hollow tube extends to the tube body of the tank cover and is connected to a second pulley and a driving gear, the top of the processing tank is provided with a driving mechanism for driving the second pulley to rotate, a support rod is provided in the hollow tube, the support rod is connected to a spiral blade that cooperates with the inner wall of the hollow tube, the support rod extends to the top of the tank cover and is connected to a third pulley that meshes with the driving gear, and the top of the processing tank is provided with a linkage mechanism for driving the support rod to rotate;

[0010] The outer wall of the hollow tube is connected to the stirring frame, and the top tube body of the hollow tube is provided with a plurality of liquid outlets at the bottom of the annular inclined plate.

[0011] In an optional solution: the driving mechanism includes a motor frame installed on the top of the tank cover, a motor is installed on the top of the motor frame, a first pulley is installed on the motor shaft at the power output end at the bottom of the motor, and the first pulley is connected to the second pulley through a synchronous belt A.

[0012] In an optional solution: the linkage mechanism includes a support shaft and a driven gear installed on the support shaft, the driven gear is engaged with the driving gear, the support shaft is rotatably connected to the top of the tank cover, a fourth pulley is installed on the top of the support shaft, and the fourth pulley is connected to the third pulley through a synchronous belt B.

[0013] In an optional solution: a support frame for supporting the support rod to rotate stably is installed on the top of the tank cover, and a pressure relief pipe and a feed pipe are also installed on the top of the tank cover.

[0014] In an optional solution: a liquid inlet pipe connected to the annular pipe is installed on the top of the tank cover.

[0015] In an optional solution, a water inlet pipe for supplying water to the hydrothermal interlayer and a water outlet pipe for discharging water from the hydrothermal interlayer are installed on the outer wall of the treatment tank.

[0016] In an optional solution: the outer wall of the bottom of the processing tank is connected to the support legs, and the bottom of the processing tank is connected to the discharge pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the utility model, the driving mechanism drives the second pulley to rotate, the hollow tube rotates, the stirring frame stirs the material, and the linkage mechanism drives the support rod and the hollow tube to rotate in the opposite direction. Under the action of the spiral blade, the solution is assisted in stirring. At the same time, part of the solution is transported to the top of the inner cavity of the hollow tube through the rotation of the spiral blade and sprayed out from the liquid outlet. The sprayed liquid is sprayed onto the foam to defoam, while improving the mixing uniformity of the solution.

[0019] In the utility model, materials are input into the processing tank, and part of the liquid materials or liquid materials added midway can be added from the annular tube and then discharged from the liquid discharge head. Moreover, due to the shielding of the annular inclined plate, splashing of the materials during stirring onto the liquid discharge head is reduced, thereby reducing the impact of blockage on the liquid discharge head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 It is a structural schematic diagram of the top of the tank cover in the utility model.

[0022] Figure 3 This is a schematic diagram of the structure inside the processing tank in the utility model.

[0023] Figure 4 This is a schematic diagram of the structure inside the hollow core tube of the utility model.

[0024] In the figure: 11, processing tank; 12, support leg; 13, discharge pipe; 14, water outlet pipe; 15, water inlet pipe; 16, tank cover; 17, liquid inlet pipe; 18, motor; 19, motor frame; 20, first pulley; 21, second pulley; 22, driving gear; 23, support rod; 24, third pulley; 25, fourth pulley; 26, support shaft; 27, driven gear; 28, support frame; 29, annular inclined plate; 30, annular pipe; 31, liquid discharge head; 32, hollow pipe; 33, liquid outlet; 34, stirring frame; 35, spiral blade. DETAILED DESCRIPTION

[0025] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 4In this embodiment, a hydrothermal treatment device is used for preparing ultrafine silver powder, comprising a treatment tank 11 and a tank cover 16 connected to the top of the treatment tank 11, wherein a hydrothermal interlayer is provided between the inner wall and the outer wall of the treatment tank 11;

[0028] An annular tube 30 is installed at the bottom of the tank cover 16. The bottom of the annular tube 30 is provided with an annular inclined plate 29 connected to the inner wall of the treatment tank 11. The bottom of the annular tube 30 is connected to a plurality of liquid outlet heads 31 arranged toward the annular inclined plate 29.

[0029] The tank cover 16 is rotatably connected to a hollow tube 32 extending into the processing tank 11, and a stirring frame 34 is connected to the hollow tube 32. The top of the hollow tube 32 extends to the tube body of the top of the tank cover 16 and is connected to a second pulley 21 and a driving gear 22. The top of the processing tank 11 is provided with a driving mechanism for driving the second pulley 21 to rotate, and a support rod 23 is provided in the hollow tube 32. The support rod 23 is connected to a spiral blade 35 that cooperates with the inner wall of the hollow tube 32. The support rod 23 extends to the top of the tank cover 16 and is connected to a third pulley 24 that meshes with the driving gear 22. The top of the processing tank 11 is provided with a linkage mechanism for driving the support rod 23 to rotate;

[0030] The outer wall of the hollow tube 32 is connected to the stirring frame 34, and the top of the hollow tube 32 is provided with a plurality of liquid outlets 33 at the bottom of the annular inclined plate 29;

[0031] In this embodiment, the material is input into the processing tank 11, and part of the liquid material or the liquid material added midway can be added through the annular pipe 30 and then discharged from the liquid outlet 31. In addition, due to the shielding of the annular inclined plate 29, the material splashing onto the liquid outlet 31 during stirring is reduced, thereby reducing the impact of clogging of the liquid outlet 31.

[0032] The driving mechanism drives the second pulley 21 to rotate, the hollow tube 32 to rotate, and the stirring frame 34 to stir the material. The linkage mechanism drives the support rod 23 and the hollow tube 32 to rotate in the opposite direction. Under the action of the spiral blade 35, the solution is assisted in stirring. At the same time, part of the solution is transported to the top of the inner cavity of the hollow tube 32 through the rotation of the spiral blade 35, and sprayed out from the liquid outlet 33. The sprayed liquid is sprayed onto the foam to defoam and improve the mixing uniformity of the solution.

[0033] In another embodiment, the driving mechanism includes a motor frame 19 mounted on the top of the tank cover 16, a motor 18 is mounted on the top of the motor frame 19, a first pulley 20 is mounted on the motor shaft at the power output end of the bottom of the motor 18, and the first pulley 20 is connected to the second pulley 21 through a synchronous belt A;

[0034] The motor 18 works to drive the first pulley 20 to rotate, and through the transmission of the synchronous belt A, drives the second pulley 21 to rotate, and the hollow tube 32 rotates.

[0035] In another embodiment, the linkage mechanism includes a support shaft 26 and a driven gear 27 mounted on the support shaft 26, the driven gear 27 is engaged with the driving gear 22, the support shaft 26 is rotatably connected to the top of the tank cover 16, and a fourth pulley 25 is installed on the top of the support shaft 26, and the fourth pulley 25 is connected to the third pulley 24 through a synchronous belt B;

[0036] The hollow tube 32 rotates, the driving gear 22 drives the driven gear 27 to rotate, the support shaft 26 rotates, the fourth pulley 25 drives the fourth pulley 25 to rotate, and the support rod 23 rotates.

[0037] In another embodiment, a support frame 28 is installed on the top of the tank cover 16 to support the support rod 23 for stable rotation. The setting of the support frame 28 enables the support rod 23 to rotate stably;

[0038] The top of the tank cover 16 is also equipped with a pressure relief pipe and a feed pipe; a pressure gauge and a valve can be installed on the pressure relief pipe to maintain or release the pressure in the processing tank 11, and the feed pipe can be used for the input of materials.

[0039] In another embodiment, a liquid inlet pipe 17 connected to the annular tube 30 is installed on the top of the tank cover 16; the liquid inlet pipe 17 can be connected to an external feeding device to feed liquid into the annular tube 30, so that material can be added midway during the reaction process.

[0040] In another embodiment, the outer wall of the treatment tank 11 is installed with a water inlet pipe 15 for supplying water to the hydrothermal interlayer and a water outlet pipe 14 for discharging water from the hydrothermal interlayer; both the water inlet pipe 15 and the water outlet pipe 14 can be installed with existing valves for use, or in actual use, they can be connected to external hot water circulation equipment, and hot water is supplied into the hydrothermal interlayer to heat or keep the solution in the treatment tank 11 warm, etc., and the heating temperature is uniform.

[0041] like Figure 1 As shown, in another embodiment, the outer wall of the bottom of the processing tank 11 is connected to the support legs 12, and the support legs 12 can play a supporting role. The bottom of the processing tank 11 is connected to the discharge pipe 13; in actual use, the existing discharge valve is installed at the bottom of the discharge pipe 13 for use.

[0042] The working principle of the present invention is as follows: hot water is fed into the hydrothermal interlayer to heat or keep the solution in the treatment tank 11, and the heating temperature is uniform. The material is fed into the treatment tank 11, and part of the liquid material or the liquid material added midway can be added through the annular pipe 30 and then discharged from the liquid outlet 31. In addition, due to the shielding of the annular inclined plate 29, the material splashing onto the liquid outlet 31 during stirring is reduced, thereby reducing the impact of clogging of the liquid outlet 31.

[0043] When the motor 18 is working, it can drive the first pulley 20 to rotate, and through the transmission of the synchronous belt A, it drives the second pulley 21 to rotate, the hollow tube 32 rotates, the stirring frame 34 stirs the material, the hollow tube 32 rotates, the driving gear 22 drives the driven gear 27 to rotate, the support shaft 26 rotates, the fourth pulley 25 drives the fourth pulley 25 to rotate, the support rod 23 rotates, and the support rod 23 rotates in the opposite direction to the hollow tube 32. Under the action of the spiral blade 35, the solution is assisted in stirring. At the same time, part of the solution is transported to the top of the inner cavity of the hollow tube 32 through the rotation of the spiral blade 35, and sprayed out from the liquid outlet 33. The sprayed liquid is sprayed on the foam to defoam, and at the same time, the uniformity of solution mixing is improved.

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

Claims

1. A hydrothermal treatment device for preparing ultrafine silver powder, comprising a treatment tank (11) and a tank cover (16) connected to the top of the treatment tank (11), wherein a hydrothermal interlayer is provided between the inner wall and the outer wall of the treatment tank (11); Its characteristics are: An annular tube (30) is installed at the bottom of the tank cover (16), and an annular inclined plate (29) connected to the inner wall of the treatment tank (11) is provided at the bottom of the annular tube (30). A plurality of liquid discharge heads (31) arranged toward the annular inclined plate (29) are connected to the bottom of the annular tube (30); The tank cover (16) is rotatably connected to a hollow tube (32) extending into the processing tank (11), the hollow tube (32) is connected to a stirring frame (34), the top of the hollow tube (32) extending to the top of the tank cover (16) is connected to a second pulley (21) and a driving gear (22), the top of the processing tank (11) is provided with a driving mechanism for driving the second pulley (21) to rotate, a support rod (23) is provided in the hollow tube (32), the support rod (23) is connected to a spiral blade (35) matched with the inner wall of the hollow tube (32), the support rod (23) extends to the top of the tank cover (16) and is connected to a third pulley (24) meshed with the driving gear (22), and the top of the processing tank (11) is provided with a linkage mechanism for driving the support rod (23) to rotate; The outer wall of the hollow tube (32) is connected to the stirring frame (34), and the top tube body of the hollow tube (32) is provided with a plurality of liquid outlets (33) at the bottom of the annular inclined plate (29).

2. The hydrothermal treatment device for preparing ultrafine silver powder according to claim 1, characterized in that: The driving mechanism comprises a motor frame (19) mounted on the top of the tank cover (16), a motor (18) mounted on the top of the motor frame (19), a first pulley (20) mounted on the motor shaft at the power output end at the bottom of the motor (18), and the first pulley (20) is connected to a second pulley (21) through a synchronous belt A.

3. The hydrothermal treatment device for preparing ultrafine silver powder according to claim 1, characterized in that: The linkage mechanism comprises a support shaft (26) and a driven gear (27) mounted on the support shaft (26), wherein the driven gear (27) is engaged with the driving gear (22), the support shaft (26) is rotatably connected to the top of the tank cover (16), a fourth pulley (25) is mounted on the top of the support shaft (26), and the fourth pulley (25) is connected to the third pulley (24) through a synchronous belt B.

4. The hydrothermal treatment device for preparing ultrafine silver powder according to claim 1, characterized in that: A support frame (28) for supporting the support rod (23) for stable rotation is installed on the top of the tank cover (16), and a pressure relief pipe and a feed pipe are also installed on the top of the tank cover (16).

5. The hydrothermal treatment device for preparing ultrafine silver powder according to claim 1, characterized in that: A liquid inlet pipe (17) connected to the annular pipe (30) is installed on the top of the tank cover (16).

6. The hydrothermal treatment device for preparing ultrafine silver powder according to claim 1, characterized in that: The outer wall of the treatment tank (11) is provided with a water inlet pipe (15) for supplying water to the hydrothermal interlayer and a water outlet pipe (14) for discharging water from the hydrothermal interlayer.

7. The hydrothermal treatment device for preparing ultrafine silver powder according to claim 1, characterized in that: The outer wall of the bottom of the processing tank (11) is connected to the support leg (12), and the bottom of the processing tank (11) is connected to the discharge pipe (13).

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