Silver paste stirring device

Abstract

The utility model discloses a silver paste stirring device which comprises a stirring tank, a supporting frame, a lifting mechanism, a motor, a rotating shaft and a stirring piece and further comprises a material cleaning assembly arranged in the stirring tank. The material cleaning assembly comprises a spiral scraping strip; the positioning strip is rotationally connected with the rotating shaft; the rotating rod is arranged at the bottom of the scraping strip; wherein an extension part is arranged on the lower side of the stirring piece, and a spline groove is formed in the center of the extension part; a spline corresponding to the spline groove is arranged on the upper side of the rotating rod, and a guide face is arranged on the edge of the top of the spline. According to the silver paste stirring device provided by the utility model, by arranging the material cleaning assembly rotationally connected with the rotating shaft, when the spline groove is connected with the spline, the material cleaning assembly synchronously rotates along with the rotating shaft to clean the inner wall of the stirring tank, so that the cleaning efficiency of the device is improved; meanwhile, when the spline groove is separated from the spline, the stirring piece is driven to independently rotate for stirring, and the stirring effect is improved; and a spiral scraping strip is arranged to push the silver paste to move downwards.

Description

Technical Field

[0001] This utility model relates to the field of stirring device technology. More specifically, this utility model relates to a silver paste stirring device. Background Technology

[0002] Silver paste is a functional paste composed of metallic silver powder as the main conductive phase, combined with resin, solvent, and additives. It possesses excellent conductivity, adhesion, and printability, and is widely used in photovoltaic cells, electronic packaging, and flexible circuits. The production process of silver paste requires stirring to ensure thorough mixing of the silver powder with the other components. However, existing silver paste mixers have a fixed stirring position and cannot adjust the height, which can easily lead to insufficient mixing.

[0003] To ensure thorough mixing by adjusting the stirring position, utility model patent CN213725965U discloses a special mixer for silver paste, including a mixing tank, a sealing cover, and cylinders fixedly installed at both ends of the top of the sealing cover. The extension and retraction of the cylinders changes the position of the stirring blades and spiral blades within the mixing tank, ensuring thorough mixing of the silver paste raw material at all depths. However, this device lacks a corresponding cleaning mechanism inside the mixing tank. After mixing, it is inconvenient to clean the silver paste adhering to the inner wall of the mixing tank, resulting in slow discharge of the silver paste adhering to the inner wall and even waste due to silver paste residue on the inner wall of the mixing tank. Summary of the Invention

[0004] One object of this invention is to solve the above-mentioned problems and / or defects, and to provide the advantages that will be described later.

[0005] To achieve these objectives and other advantages of this utility model, a silver paste mixing device is provided, comprising: a mixing tank with an inlet and an outlet, a support frame disposed at the bottom of the mixing tank, a lifting mechanism disposed at the top of the mixing tank, a motor fixed to the power output end of the lifting mechanism, a rotating shaft that is drivenly connected to the power output end of the motor, a mixing component disposed inside the mixing tank and fixed to the rotating shaft, and further comprising: a cleaning component disposed inside the mixing tank.

[0006] The cleaning assembly includes: a spiral scraper adapted to the inner wall of the mixing tank;

[0007] A positioning strip that is rotatably connected to the rotating shaft and is set on top of the scraper to fix the scraper;

[0008] A rotating rod is installed at the bottom of the scraper and rotatably connected to the bottom of the mixing tank;

[0009] The scraper blade is configured to rotate in an upward spiral along the rotation direction;

[0010] The stirring component has an extension on its lower side, and the center of the extension has a spline groove.

[0011] The upper side of the rotating rod is provided with a spline corresponding to the spline groove, and the top edge of the spline is provided with a guide surface.

[0012] Preferably, the bottom and sides of the mixing tank are both configured to be conical, and the taper of the side of the mixing tank is much smaller than the taper of the bottom of the mixing tank;

[0013] The bottom center of the mixing tank is provided with a discharge pipe that communicates with the mixing tank, and the discharge port is located on the side of the discharge pipe.

[0014] Preferably, a sealing chamber is provided on the lower side of the discharge pipe;

[0015] The upper side of the sealing chamber is provided with a circular hole, and a sealing element is provided at the circular hole;

[0016] The lower side of the rotating rod passes through a round hole into the sealing chamber and can move up and down inside the sealing chamber;

[0017] The sealed chamber is equipped with an elastic element that can push the rotating rod upward.

[0018] Preferably, the mixing tank has a viewing window on its side.

[0019] Preferably, the agitator is configured as a turbine agitator.

[0020] This utility model includes at least the following beneficial effects: By setting a cleaning component that is rotatably connected to the rotating shaft, when the lifting mechanism moves the rotating shaft to connect the spline groove of the extension part with the spline of the cleaning component, the cleaning component rotates synchronously with the rotating shaft to clean the inner wall of the mixing tank, so that the silver paste adhering to the inner wall of the mixing tank can be quickly discharged, avoiding waste caused by silver paste residue on the inner wall of the mixing tank, and improving the cleaning efficiency of the device; at the same time, when cleaning is not performed, the spline groove can be separated from the spline, which makes it easier to drive the mixing component to rotate independently for mixing, thereby improving the mixing effect; by setting a spiral scraper, the silver paste adhering to the inner wall of the mixing tank is pushed downward by the spiral scraper, which helps the silver paste to converge and be discharged from the discharge port below.

[0021] Other advantages, objectives and features of this invention will be apparent in part from the description which follows, and in part from the understanding of those skilled in the art through study and practice of this invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the silver paste stirring device in one embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the silver paste stirring device in one embodiment of the present invention;

[0024] Figure 3This is a schematic diagram of the cleaning component of the silver paste stirring device in one embodiment of the present invention.

[0025] The diagram is labeled as follows: 1. Mixing tank, 11. Inlet, 12. Outlet pipe, 13. Outlet, 2. Support frame, 3. Lifting mechanism, 4. Motor, 5. Rotating shaft, 6. Mixing component, 61. Extension section, 611. Spline groove, 7. Cleaning assembly, 71. Positioning strip, 72. Scraper, 73. Rotating rod, 74. Spline, 741. Guide surface, 8. Sealing chamber, 81. Elastic component, 82. Groove, 83. Bearing, 9. Viewing window. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0027] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not list the presence or addition of one or more other elements or combinations thereof.

[0028] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] Example 1

[0032] A silver paste stirring device, the structure of which is as follows: Figure 1-3 As shown, it includes: a mixing tank 1 with a feed inlet 11 and a discharge outlet 13, a support frame 2 set at the bottom of the mixing tank 1, a lifting mechanism 3 set at the top of the mixing tank 1, a motor 4 fixed to the power output end of the lifting mechanism 3, a rotating shaft 5 that is connected to the power output end of the motor 4, a mixing component 6 set inside the mixing tank 1 and fixed to the rotating shaft 5, and also includes: a cleaning component 7 set inside the mixing tank 1.

[0033] The cleaning assembly 7 includes: a scraper 72 adapted to the inner wall of the mixing tank 1;

[0034] A positioning strip 71 is rotatably connected to the rotating shaft 5 and is set on the top of the scraper 72 to fix the scraper 72;

[0035] A rotating rod 73 is provided at the bottom of the scraper 72 and extends downwards, and is rotatably connected to the bottom of the mixing tank 1;

[0036] The stirring component 6 has an extension 61 on its lower side, and the extension 61 has a spline groove 611 at its center.

[0037] The upper side of the rotating rod 73 is provided with a spline 74 corresponding to the spline groove 611, and the top edge of the spline 74 is provided with a guide surface 741.

[0038] In practical applications, the lifting mechanism 3 is configured as a cylinder, and the power output end of the cylinder is fixedly connected to the motor 4 via a fixed platform, so as to drive the motor 4 to lift and lower when the cylinder extends or retracts. The spline groove 611 and spline 74 are both configured as hexagons, which facilitates the stirring component 6 to drive the cleaning component 7 to rotate and clean the inner wall of the stirring tank 1 after they are interlocked.

[0039] Working principle: During operation, the stirring component 6 can be adjusted by the lifting mechanism 3 to move up and down within the silver paste surface according to the required height of the silver paste in the mixing tank 1, thus ensuring that the silver paste at all depths in the mixing tank 1 is fully stirred. At the same time, when the stirring component 6 is moved to the lowest point of its stroke, the spline groove 611 of the extension part 61 connects with the spline 74 of the cleaning component 7, and the cleaning component 7 rotates synchronously with the rotating shaft 5 to clean the inner wall of the mixing tank 1. When not cleaning, the stirring component 6 can be raised by the lifting mechanism 3 to separate the spline groove 611 from the spline 74, making it easier to drive the stirring component 6 to rotate independently for stirring, thereby improving the stirring effect.

[0040] By setting up a cleaning component 7 that is rotatably connected to the rotating shaft 5, when the lifting mechanism 3 moves the rotating shaft 5 to connect the spline groove 611 of the extension 61 with the spline 74 of the cleaning component 7, the cleaning component 7 rotates synchronously with the rotating shaft 5 to clean the inner wall of the mixing tank 1, so that the silver paste adhering to the inner wall of the mixing tank 1 is quickly discharged, avoiding waste caused by silver paste residue on the inner wall of the mixing tank 1 and improving the cleaning efficiency of the device; at the same time, when cleaning is not performed, the spline groove 611 can be separated from the spline 74, which makes it easier to drive the stirring component 6 to rotate independently for stirring, improving the stirring effect; by setting up a spiral scraper 72, the silver paste adhering to the inner wall of the mixing tank 1 is pushed downward by the spiral scraper 72, which helps the silver paste to converge and be discharged from the discharge port 13 below.

[0041] Example 2

[0042] This second embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1-2 As shown, based on embodiment 1, the following improvement is disclosed: the bottom and sides of the mixing tank 1 are both configured as conical, and the taper of the side of the mixing tank 1 is much smaller than the taper of the bottom of the mixing tank 1;

[0043] The bottom center of the mixing tank 1 is provided with a discharge pipe 12 that communicates with the mixing tank 1, and the discharge port 13 is provided on the side of the discharge pipe 12.

[0044] Working principle: The bottom and sides of the mixing tank 1 are set in a conical shape to cooperate with the spiral scraper 72, which is conducive to cleaning and collecting the silver paste adhering to the inner wall of the mixing tank 1.

[0045] Example 3

[0046] This third embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 2-3 As shown, based on embodiment 2, the following improvement is disclosed: a sealing chamber 8 is provided on the lower side of the discharge pipe 12;

[0047] The sealing chamber 8 has a round hole on its upper side, and a sealing element is provided at the round hole;

[0048] The lower side of the rotating rod 73 passes through a round hole into the sealing chamber 8 and can move up and down within the sealing chamber 8;

[0049] The sealed chamber 8 is equipped with an elastic element 81 that can push the rotating rod 73 upward.

[0050] In practical applications, the sealing element is adapted to the rotating rod 73 to prevent leakage from occurring when the mixing tank 1 communicates with the sealing chamber 8. The sealing chamber 8 is provided with a bearing 83 fixed to the rotating rod 73, and the inner ring of the bearing 83 is fixed to the rotating rod 73, while the outer ring of the bearing 83 is fixed to the elastic element 81. The elastic element 81 is configured as a spring, with its upper and lower ends fixed to the outer ring of the bearing 83 and the bottom of the sealing chamber 8, respectively. The bottom of the sealing chamber 8 is provided with a groove 82 that communicates with the sealing chamber 8 to prevent the rotating rod 73 from moving downward.

[0051] Working principle: The sealing chamber 8 and the elastic element 81 allow the cleaning component 7 to move upward a certain distance when not connected to the agitator 6, so that it does not stick to the inner wall of the mixing tank 1 and does not affect the agitator 6's agitation work. This avoids the cleaning component 7 sticking to the inner wall of the mixing tank 1 and creating a dead angle for agitation, which would affect the agitation effect. At the same time, when the cleaning component 7 is connected to the agitator 6, the agitator 6 pushes the cleaning component 7 downward to stick to the inner wall of the mixing tank 1 for cleaning.

[0052] Example 4

[0053] This embodiment 4 is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 1, the following improvement is disclosed: the mixing tank 1 is provided with a viewing window 9 on its side.

[0054] In practical applications, the viewing window 9 is vertically positioned and its length is greater than two-thirds of the length of the side wall of the mixing tank 1, so as to ensure effective observation of each inner wall of the mixing tank 1.

[0055] Working principle: The viewing window 9 allows for easy observation of the interior of the mixing tank 1, including the level of the silver paste, the mixing status, and the cleanliness. This facilitates mixing and cleaning as needed, ensuring the mixing and cleaning effect of the device.

[0056] Example 5

[0057] This fifth embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 2-3 As shown, based on embodiment 1, the following improvement is disclosed: the stirring element 6 is configured as a turbine-type stirring paddle.

[0058] Working principle: The blade structure of the turbine agitator can generate strong shear force and circulating flow to achieve efficient mixing of liquids.

[0059] The above solutions are merely illustrative examples of preferred embodiments, but are not limited thereto. When implementing this invention, appropriate substitutions and / or modifications can be made according to the user's needs.

[0060] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0061] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A silver paste stirring device, comprising: A mixing tank with an inlet and an outlet, a support frame at the bottom of the mixing tank, a lifting mechanism at the top of the mixing tank, a motor fixed to the power output end of the lifting mechanism, a rotating shaft connected to the power output end of the motor, and a mixing component disposed inside the mixing tank and fixed to the rotating shaft, characterized in that it further includes a cleaning component disposed inside the mixing tank. The cleaning assembly includes: a spiral scraper adapted to the inner wall of the mixing tank; A positioning strip that is rotatably connected to the rotating shaft and is set on the top of the scraper to fix the scraper; A rotating rod is installed at the bottom of the scraper and rotatably connected to the bottom of the mixing tank; The scraper blade is configured to rotate in an upward spiral along the rotation direction; The stirring component has an extension on its lower side, and the center of the extension has a spline groove. The upper side of the rotating rod is provided with a spline corresponding to the spline groove, and the top edge of the spline is provided with a guide surface.

2. The silver paste stirring device as described in claim 1, characterized in that, The bottom and sides of the mixing tank are both configured to be conical, and the taper of the side of the mixing tank is much smaller than the taper of the bottom of the mixing tank. The bottom center of the mixing tank is provided with a discharge pipe that communicates with the mixing tank, and the discharge port is located on the side of the discharge pipe.

3. The silver paste stirring device as described in claim 2, characterized in that, A sealing chamber is provided on the lower side of the discharge pipe; The upper side of the sealing chamber is provided with a circular hole, and a sealing element is provided at the circular hole; The lower side of the rotating rod passes through a round hole into the sealing chamber and can move up and down inside the sealing chamber; The sealed chamber is equipped with an elastic element that can push the rotating rod upward.

4. The silver paste stirring apparatus as described in claim 1, characterized in that, The mixing tank has a viewing window on its side.

5. The silver paste stirring apparatus as described in claim 1, characterized in that, The agitator is configured as a turbine agitator.

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