A reaction device for preparing nano silver powder

Abstract

The present invention relates to the technical field of nano silver powder production, and specifically to a reaction device for preparing nano silver powder, which includes a reaction tank. A plurality of diaphragm members are arranged on the surface of the reaction tank, and a plurality of stirring rollers are arranged outside the reaction tank. The stirring rollers correspond to the diaphragm members one by one. The stirring rollers in the same column are jointly connected to a connecting frame, and the connecting frame is connected to the reaction tank through a synchronous moving mechanism. By setting the synchronous moving mechanism, the present invention can drive the stirring rollers to move. The stirring rollers can push the diaphragm members to deform and move into the reaction tank, and the rotation mechanism is used to drive the stirring rollers to rotate to stir the reaction liquid inside the reaction tank; during the stirring process, the stirring rollers do not directly contact the reaction liquid, and there is no need to clean the stirring rollers. In addition, after the stirring rollers are moved out of the reaction tank, the diaphragm members will recover to make the inner surface of the reaction tank flat, so as to facilitate the cleaning of the inner surface of the reaction tank.

Description

Technical Field

[0001] The present invention relates to the technical field of nano - silver powder production, and specifically to a reaction device for preparing nano - silver powder. Background Art

[0002] The preparation methods of ultrafine silver powder mainly include gas - phase method, liquid - phase method and solid - phase method. The gas - phase method has large investment, high energy consumption and low yield; the particle size of the ultrafine silver powder prepared by the solid - phase method is relatively large and the particle size distribution range is wide; the liquid - phase chemical reduction method is a commonly used method for preparing ultrafine silver powder with low cost and small batch at present. The principle of preparing ultrafine silver powder by the liquid - phase chemical reduction method is to deposit silver in the form of powder from its salt or complex aqueous solution or organic system with a reducing agent. Commonly used reducing agents include formaldehyde, ascorbic acid, glycerol, organic amines, unsaturated alcohols, sodium citrate, hydrazine and hydrazine compounds, etc., and generally hydrazine hydrate is mostly used. In an aqueous silver ammonia solution, a certain amount of additive nitrate is added, and by adjusting the amount of the additive under the action of the reducing agent hydrazine hydrate, silver powders with different particle sizes can be obtained. At present, in the production process of nano - silver powder, a stirring device is needed to stir the reaction solution. The existing stirring device is located inside the reaction tank and directly contacts the reaction solution, which is not convenient for cleaning. Therefore, a reaction device for preparing nano - silver powder is proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a reaction device for preparing nano - silver powder to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A reaction device for preparing nano - silver powder, including a reaction tank, a plurality of diaphragm members are arranged on the surface of the reaction tank, a plurality of stirring rollers are arranged outside the reaction tank, the stirring rollers correspond to the diaphragm members one by one, the stirring rollers in the same column are commonly connected to a connecting frame, the connecting frame is connected to the reaction tank through a synchronous moving mechanism, and the synchronous moving mechanism can move the stirring rollers into the reaction tank through the diaphragm members;

[0005] Rotating mechanisms are arranged on the outer surfaces of the connecting frames, and the rotating mechanisms make the stirring rollers on the same connecting frame rotate simultaneously.

[0006] Preferably, the diaphragm member includes a frame plate, a rubber layer and an installation groove. The installation groove is opened on the surface of the reaction tank, the installation groove is adapted to the frame plate, the frame plate is fixedly installed inside the installation groove, and the rubber layer is fixedly installed inside the frame plate.

[0007] Preferably, support columns are fixedly connected to the four corners of the lower surface of the reaction tank, and a base is commonly fixedly connected to the support columns. The base is located below the reaction tank.

[0008] Preferably, the synchronous moving mechanism includes a main gear rotatably installed on the upper surface of the base. The connecting frames are all L-shaped. A chute for the horizontal part of the connecting frame is formed at the bottom of the reaction tank. The horizontal parts of the connecting frames are fitted and installed inside the chute. Tooth plates are fixedly connected to the horizontal parts of the connecting frames. A plurality of upper gears are rotatably connected to the lower surface of the reaction tank. The upper gears correspond to the tooth plates one by one and are meshed with each other. A plurality of lower gears are rotatably connected to the upper surface of the base. The lower gears are all meshed with the main gear. A rotating shaft is fixedly connected between the upper gear and the lower gear in the same column. A first motor is fixedly installed on the lower surface of the base. The output shaft of the first motor is fixedly connected to the main gear.

[0009] Preferably, the horizontal parts of the connecting frames are all arranged along the radial direction of the reaction tank, and the main gear is coaxially arranged with the reaction tank.

[0010] Preferably, an adjusting mechanism is arranged between the rotating end of the rotating mechanism and one end of the stirring roller. The adjusting mechanism can make the stirring roller eccentrically arranged with respect to the rotating end of the rotating mechanism.

[0011] Preferably, the adjusting mechanism includes a turntable rotatably installed on the connecting frame. A groove is formed on the surface of the turntable along the diameter direction. A slider is fitted and installed inside the groove. An electric push rod is fixedly connected to one side of the inner surface of the groove. The output end of the electric push rod is fixedly connected to the slider.

[0012] Preferably, the rotating mechanism includes a transmission wheel fixedly installed on the outer surface of the turntable. A conveyor belt is commonly sleeved on the outer surfaces of the transmission wheels in the same column. A second motor is fixedly connected to the connecting frame. The output shaft of the second motor is fixedly connected to one of the transmission wheels.

[0013] Preferably, the distance between two sets of the rotating mechanisms in the same column is greater than the rotating diameter of the stirring roller.

[0014] Preferably, a discharge pipe is fixedly and penetratingly connected to the bottom of the reaction tank. A valve body is arranged inside the discharge pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] By setting the synchronous moving mechanism, the present invention can drive the stirring roller to move. The stirring roller can push the diaphragm member to deform and move into the reaction tank, and drive the stirring roller to rotate by using the rotating mechanism to stir the reaction liquid inside the reaction tank;

[0017] During the stirring process, the stirring roller does not directly contact the reaction liquid, and it is not necessary to clean the stirring roller. In addition, after the stirring roller is moved out of the reaction tank, the diaphragm member will recover to make the inner surface of the reaction tank flat, so as to facilitate the cleaning of the inner surface of the reaction tank. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the whole of the present invention;

[0019] Figure 2 It is a cross-sectional view of the outer cylinder of the present invention;

[0020] Figure 3 It is a schematic structural diagram of the synchronous movement mechanism of the present invention;

[0021] Figure 4 It is a schematic structural diagram of the precipitation rotation mechanism of the present invention;

[0022] Figure 5 It is a schematic structural diagram of the adjustment mechanism of the present invention;

[0023] Figure 6 For the present invention Figure 2 The enlarged view of the A position in

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows: 1, reaction tank; 2, diaphragm member; 21, frame plate; 22, rubber layer; 23, installation groove; 3, stirring roller; 4, connecting frame; 5, synchronous movement mechanism; 51, toothed plate; 52, chute; 53, upper gear; 54, rotating shaft; 55, lower gear; 56, main gear; 57, first motor; 6, rotating mechanism; 61, second motor; 62, transmission wheel; 63, conveyor belt; 7, adjustment mechanism; 71, turntable; 72, tank body; 73, electric push rod; 74, slider; 8, support column; 9, base; 10, discharge pipe. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figure 1 - Figure 2 , in the illustration, a reaction device for preparing nano-silver powder, including a reaction tank 1, a plurality of groups of diaphragm members 2 are arranged on the surface of the reaction tank 1, a plurality of groups of stirring rollers 3 are arranged outside the reaction tank 1, the stirring rollers 3 correspond to the diaphragm members 2 one by one, the stirring rollers 3 in the same column are commonly connected with a connecting frame 4, and the connecting frame 4 is connected to the reaction tank 1 through a synchronous movement mechanism 5, and the synchronous movement mechanism 5 can move the stirring rollers 3 into the reaction tank 1 through the diaphragm members 2;

[0027] Rotating mechanisms 6 are arranged on the outer surfaces of the connecting frames 4, and the rotating mechanisms 6 make the stirring rollers 3 on the same connecting frame 4 rotate simultaneously.

[0028] In this embodiment, by setting the synchronous moving mechanism 5, the stirring roller 3 can be driven to move. The stirring roller 3 can push the diaphragm member 2 to deform and move into the reaction tank 1. Then, the rotation mechanism 6 is used to drive the stirring roller 3 to rotate to stir the reaction liquid inside the reaction tank 1. After the stirring is completed, the synchronous moving mechanism 5 is used again to drive the stirring roller 3 to reset and move out of the reaction tank 1. Moreover, during the stirring process, the stirring roller 3 does not directly contact the reaction liquid, so there is no need to clean the stirring roller 3. In addition, after the stirring roller 3 moves out of the reaction tank 1, the diaphragm member 2 will recover to make the inner surface of the reaction tank 1 flat, which is convenient for cleaning the inner surface of the reaction tank 1.

[0029] Furthermore, the diaphragm member 2 includes a frame plate 21, a rubber layer 22, and an installation groove 23. The installation groove 23 is opened on the surface of the reaction tank 1. The installation groove 23 is adapted to the frame plate 21, and the frame plate 21 is fixedly installed inside the installation groove 23. The rubber layer 22 is fixedly installed inside the frame plate 21.

[0030] In the actual application process, when the frame plate 21 is installed inside the installation groove 23, a sealing gasket needs to be set between the frame plate 21 and the installation groove 23 to ensure the sealing performance inside the reaction tank 1.

[0031] Please refer to Figure 2 、 Figure 3 and Figure 6 , support columns 8 are fixedly connected to the four corners of the lower surface of the reaction tank 1. A base 9 is fixedly connected to the support columns 8 together, and the base 9 is located below the reaction tank 1. The synchronous moving mechanism 5 includes a main gear 56 rotatably installed on the upper surface of the base 9. The connecting frames 4 are all L-shaped. A sliding groove 52 for the horizontal part of the connecting frame 4 is opened at the bottom of the reaction tank 1. The horizontal parts of the connecting frames 4 are fitted and installed inside the sliding groove 52. Tooth plates 51 are fixedly connected to the horizontal parts of the connecting frames 4. Multiple upper gears 53 are rotatably connected to the lower surface of the reaction tank 1. The upper gears 53 correspond to the tooth plates 51 one by one and are meshed with each other. Multiple lower gears 55 are rotatably connected to the upper surface of the base 9. The lower gears 55 are all meshed with the main gear 56. A rotating shaft 54 is fixedly connected between the upper gear 53 and the lower gear 55 in the same column. A first motor 57 is fixedly installed on the lower surface of the base 9, and the output shaft of the first motor 57 is fixedly connected to the main gear 56.

[0032] Furthermore, the horizontal parts of the connecting frames 4 are all arranged along the radial direction of the reaction tank 1, and the main gear 56 is coaxially arranged with the reaction tank 1.

[0033] In this embodiment, when the first motor 57 drives the main gear 56 to rotate forward, the lower gear 55, the rotating shaft 54, and the upper gear 53 can be driven to rotate, thereby driving the toothed plate 51 and the horizontal part of the connecting frame 4 to move along the chute 52 towards the center of the bottom of the reaction tank 1. The connecting frame 4 can then drive the stirring roller 3 to move, and the stirring roller 3 can thus push the rubber layer 22, causing the rubber layer 22 to deform and move into the reaction tank 1. When the first motor 57 drives the main gear 56 to rotate in the reverse direction, the lower gear 55, the rotating shaft 54, and the upper gear 53 can be driven to rotate in the reverse direction, thereby driving the toothed plate 51 and the horizontal part of the connecting frame 4 to move along the chute 52 towards the outside of the reaction tank 1. The connecting frame 4 can thus drive the stirring roller 3 to move out of the reaction tank 1.

[0034] Please refer to Figure 4 - Figure 5 , an adjusting mechanism 7 is provided between the rotating end of the rotating mechanism 6 and one end of the stirring roller 3. The adjusting mechanism 7 can eccentrically arrange the stirring roller 3 with respect to the rotating end of the rotating mechanism 6. The adjusting mechanism 7 rotatably mounts a turntable 71 on the connecting frame 4. A groove 72 is formed on the surface of the turntable 71 along the diameter direction. A slider 74 is fitted inside the groove 72. One side of the inner surface of the groove 72 is fixedly connected with an electric push rod 73, and the output end of the electric push rod 73 is fixedly connected with the slider 74.

[0035] In this embodiment, by driving the electric push rod 73 to extend, the slider 74 can be driven to move inside the groove 72, adjusting the perpendicular distance between the axis of the stirring roller 3 and the axis of the rotating end of the rotating mechanism 6, thereby adjusting the stirring range of the stirring roller 3.

[0036] Please refer to Figure 2 and Figure 4 , the rotating mechanism 6 includes a transmission wheel 62 fixedly installed on the outer surface of the turntable 71. A conveyor belt 63 is commonly sleeved on the outer surfaces of the transmission wheels 62 in the same column. A second motor 61 is fixedly connected to the connecting frame 4, and the output shaft of the second motor 61 is fixedly connected to one group of the transmission wheels 62.

[0037] In this embodiment, by driving the second motor 61 to drive the transmission wheel 62 and the conveyor belt 63 to rotate, the turntable 71, the slider 74, and the stirring roller 3 can be driven to rotate.

[0038] Please refer to Figure 2 , the distance between two groups of the rotating mechanisms 6 in the same column is greater than the rotating diameter of the stirring roller 3, which can prevent interference between the stirring rollers 3 during stirring.

[0039] Please refer to Figure 1 , a discharge pipe 10 is fixedly and penetratingly connected to the bottom of the reaction tank 1, and a valve body is arranged inside the discharge pipe 10.

[0040] In this embodiment, the valve body can be any existing model of solenoid valve. A corresponding power supply component can be arranged on the outer surface of the reaction tank 1 to supply power to the solenoid valve, and a corresponding button can also be arranged. Pressing the button can control the opening and closing of the solenoid valve.

[0041] It should be noted that: The switch interfaces of the first motor 57, the second motor 61, and the electric push rod 73 are all connected to an external power supply. The circuits and related drive programs involved are all conventional existing technologies and will not be elaborated here.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reaction device for preparing silver nanoparticles, comprising a reaction tank (1), characterized in that, A plurality of diaphragm members (2) are arranged on the surface of the reaction tank (1). A plurality of stirring rollers (3) are arranged outside the reaction tank (1). The stirring rollers (3) correspond to the diaphragm members (2) one by one. The stirring rollers (3) in the same column are jointly connected to a connecting frame (4). The connecting frame (4) is connected to the reaction tank (1) through a synchronous moving mechanism (5). The synchronous moving mechanism (5) can move the stirring rollers (3) into the reaction tank (1) through the diaphragm members (2). After the stirring rollers (3) are moved out of the reaction tank (1), the diaphragm members (2) will recover to make the inner surface of the reaction tank (1) flat, so as to facilitate the cleaning of the inner surface of the reaction tank (1). Rotating mechanisms (6) are arranged on the outer surfaces of the connecting frames (4). The rotating mechanisms (6) make the stirring rollers (3) on the same connecting frame (4) rotate simultaneously. The diaphragm member (2) includes a frame plate (21), a rubber layer (22) and a mounting groove (23). The mounting groove (23) is opened on the surface of the reaction tank (1). The mounting groove (23) is adapted to the frame plate (21). The frame plate (21) is fixedly installed inside the mounting groove (23). The rubber layer (22) is fixedly installed inside the frame plate (21). Support columns (8) are fixedly connected to the four corners of the lower surface of the reaction tank (1). A base (9) is fixedly connected to the support columns (8) together. The base (9) is located below the reaction tank (1). The synchronous moving mechanism (5) includes a main gear (56) rotatably installed on the upper surface of the base (9). The connecting frames (4) are all arranged in an L shape. A sliding groove (52) for the horizontal part of the connecting frame (4) is opened at the bottom of the reaction tank (1). The horizontal part of the connecting frame (4) is fitted and installed inside the sliding groove (52). Tooth plates (51) are fixedly connected to the horizontal parts of the connecting frames (4). A plurality of upper gears (53) are rotatably connected to the lower surface of the reaction tank (1). The upper gears (53) correspond to the tooth plates (51) one by one and are meshed with each other. A plurality of lower gears (55) are rotatably connected to the upper surface of the base (9). The lower gears (55) are all meshed with the main gear (56). A rotating shaft (54) is fixedly connected between the upper gears (53) and the lower gears (55) in the same column. A first motor (57) is fixedly installed on the lower surface of the base (9). The output shaft of the first motor (57) is fixedly connected to the main gear (56).

2. The reaction device for preparing silver nano-powder according to claim 1, wherein: The horizontal parts of the connecting frames (4) are all arranged along the radial direction of the reaction tank (1). The main gear (56) is coaxially arranged with the reaction tank (1).

3. The reaction device for preparing silver nano-powder according to claim 1, wherein: An adjusting mechanism (7) is arranged between the rotating end of the rotating mechanism (6) and one end of the stirring roller (3). The adjusting mechanism (7) can make the stirring roller (3) eccentrically arranged with respect to the rotating end of the rotating mechanism (6).

4. A reaction device for preparing silver nano-powder according to claim 3, wherein: The adjusting mechanism (7) rotates and mounts a turntable (71) on the connecting frame (4). A groove body (72) is formed on the surface of the turntable (71) along the diameter direction. A slider (74) is fitted and installed inside the groove body (72). One side of the inner surface of the groove body (72) is fixedly connected with an electric push rod (73). The output end of the electric push rod (73) is fixedly connected with the slider (74).

5. A reaction device for preparing silver nano-powder according to claim 4, wherein: The rotating mechanism (6) includes a transmission wheel (62) fixedly installed on the outer surface of the turntable (71). A conveyor belt (63) is jointly sleeved on the outer surfaces of the transmission wheels (62) in the same column. A second motor (61) is fixedly connected to the connecting frame (4). The output shaft of the second motor (61) is fixedly connected with one set of the transmission wheels (62).

6. The reaction device for preparing nano silver powder according to claim 5, wherein: The distance between two sets of the rotating mechanisms (6) in the same column is greater than the rotating diameter of the stirring roller (3).

7. The preparation reaction device for nano silver powder according to claim 1, characterized in that: A discharge pipe (10) is fixedly and penetratingly connected to the bottom of the reaction tank (1). A valve body is arranged inside the discharge pipe (10).

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