Electroconductive liquid processing apparatus

Abstract

The utility model discloses a kind of electrically conductive liquid processing devices, it is related to electrically conductive material processing equipment field, to solve the problem of existing device stirring dead angle, particle is easy to agglomerate, poor integration. The device includes rack, rack lower end fixed main tank body, left side of top is equipped with lifting mechanism, lifting mechanism lower end is connected with stirring mechanism and is penetrated to main tank body, right side of top is equipped with premixing mechanism;Lifting mechanism contains connecting sheet metal support, stirring motor fixed seat, reversing motor, lifting screw and sliding drive block, support outside is equipped with guide rail, fixed seat inside is equipped with auxiliary roller;Stirring mechanism contains connecting frame, stirring motor, stirring shaft and three-layer spiral stirring blade;Premixing mechanism contains premix tank body and two groups of pumping pipeline, premix tank body bottom is conical and is connected with main tank body by pipeline. The device can accurately adjust stirring depth, realize raw material premixing and depth dispersion, improve electrically conductive liquid mixing uniformity and processing efficiency, convenient operation, adapt to scale electrically conductive liquid production.

Description

Technical Field

[0001] This utility model relates to the field of electronic component manufacturing equipment, specifically a conductive liquid processing device. Background Technology

[0002] In the industrial production of conductive liquids, their performance directly depends on the uniformity and concentration stability of the conductive particles in the base liquid. Conductive liquids are made by mixing low-viscosity base liquids (such as N-methylpyrrolidone, deionized water dispersants) with high-concentration conductive particle slurries (such as graphene slurries, nano-silver powder slurries) in a specific ratio. Because the conductive particles are dense and prone to agglomeration, a two-step key process of "pre-mixing and proportioning - deep shear dispersion" is required to meet the subsequent coating process's requirements of "no agglomeration and high uniformity." However, existing conductive liquid processing equipment still suffers from the following technical defects that urgently need to be addressed in practical applications:

[0003] In conductive liquid processing, the liquid level in the main mixing tank dynamically changes with the addition of raw materials and the output of finished products (e.g., the initial liquid level is only 1 / 3 of the tank capacity, later rising to 2 / 3). Existing equipment often uses a "fixed-height installation" for the mixing mechanism, with the mixing shaft and motor directly fixed to the tank top support, making height adjustment impossible. When the liquid level in the main tank is low, the mixing blades can only act on the upper layer of liquid, and a dense sediment layer forms at the bottom of the tank due to particle settling (especially for conductive liquids containing nano-metal powder, where the density can reach 5-8 g / cm³). 3 The sediment layer not only leads to the waste of raw materials, but may also cause motor overload due to the sudden increase in resistance when the agitator is started later. When the liquid level is high, the agitator blades cannot reach the top area of ​​the tank, and the upper liquid is prone to "stratification" due to insufficient agitation. It is necessary to extend the agitation time to ensure uniformity, which seriously affects the processing efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention aims to provide a conductive liquid processing device. Specifically, it addresses the issues of easy deviation and poor stability of the stirring mechanism during the lifting process in traditional conductive liquid processing devices. By symmetrically arranging four sets of guide rails on the outer side of the connecting sheet metal bracket of the lifting mechanism, and correspondingly arranging four sets of auxiliary rollers on the inner side of the stirring motor mounting base, the auxiliary rollers can roll in cooperation with the guide rails when the stirring motor mounting base slides along the connecting sheet metal bracket, precisely limiting the lateral displacement of the stirring motor mounting base. Combined with the main transmission structure that drives the lifting screw with a reversing motor to slide the sliding drive block along the height direction of the connecting sheet metal bracket, this ensures that the stirring mechanism always moves smoothly along a preset trajectory during the lifting process, avoiding swaying and deviation caused by unilateral force or track gaps. This ensures precise alignment of the stirring mechanism with the internal space of the main tank, guaranteeing a safe clearance between the stirring blades and the tank wall and bottom, maintaining flow field stability during the stirring process, and improving the uniformity of conductive liquid mixing.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a conductive liquid processing device, comprising a frame, wherein a main tank is fixed at the lower end of the frame, characterized in that a lifting mechanism is fixed at the top left side of the frame, a stirring mechanism is fixed at the lower end of the lifting mechanism, the stirring mechanism extends into the interior of the main tank, and a premixing mechanism is provided at the top right side of the frame;

[0008] Preferably, the lifting mechanism includes a connecting sheet metal bracket fixed to the frame and a stirring motor mounting base sleeved on the outer side of the upper end of the connecting sheet metal bracket. A reversing motor is fixed to the top of the connecting sheet metal bracket, and a lifting screw is connected to the output end of the reversing motor. A sliding drive block is fixed to the inner side of the stirring motor mounting base.

[0009] Preferably, four sets of guide rails are symmetrically arranged on the outer side of the connecting sheet metal bracket, and four sets of auxiliary rollers are arranged on the inner side of the stirring motor fixing seat.

[0010] Preferably, the lifting screw allows the sliding drive block to slide along the height direction of the connecting sheet metal bracket.

[0011] Preferably, the stirring mechanism includes a connecting frame, a stirring motor is fixed to the upper end of the connecting frame, a stirring shaft is connected to the output end of the stirring motor, and stirring blades are fixed to the outer side of the stirring shaft.

[0012] Preferably, the stirring blades have a three-layer spiral structure.

[0013] Preferably, the premixing mechanism includes a premixing tank, with two sets of pumping pipes connected to the outside of the premixing tank. The bottom of the premixing tank is conical, and the premixing tank is connected to the main tank via a pipe.

[0014] (III) Beneficial Effects

[0015] This invention achieves multiple technical advantages through structural optimization: the lifting mechanism can precisely adjust the height of the stirring mechanism according to the liquid level in the main tank, and together with the three-layer spiral stirring blades, it forms a three-dimensional flow field, which can not only eliminate stirring dead corners, but also break up particle agglomerates through axial thrust and radial shear force, significantly improving the uniformity of conductive liquid dispersion and stabilizing the resistivity of conductive liquid; the premixing mechanism completes the primary premixing of raw materials with the help of a micro gear pump, reducing the subsequent stirring load, and combined with the integrated frame, it eliminates the manual transfer link, which greatly shortens the processing time and single batch operation time compared with the traditional processing mode, while reducing the equipment footprint; in addition, the auxiliary rollers can ensure the smooth lifting and lowering of the stirring mechanism, the mirror-polished tank wall and the easily disassembled vulnerable parts facilitate daily maintenance, and the corrosion-resistant material extends the continuous operating life of the equipment, effectively reducing production and maintenance costs, and fully adapting to the high-precision and high-efficiency conductive liquid processing requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire present invention.

[0017] Figure 2 This is a schematic diagram of the combination of the lifting mechanism and the stirring mechanism in this utility model.

[0018] Figure 3 This is a cross-sectional view of the combination of the lifting mechanism and the stirring mechanism in this utility model.

[0019] Figure 4 for Figure 3 An enlarged view of point A in the cross-sectional view of the combination of the lifting mechanism and the stirring mechanism in this utility model.

[0020] Figure 5 This is a schematic diagram of the premixing mechanism in this utility model.

[0021] In the diagram: 1-Frame, 2-Main tank, 3-Lifting mechanism, 31-Connecting sheet metal bracket, 32-Agitator motor mounting base, 33-Reversing motor, 34-Lifting screw, 35-Sliding drive block, 36-Guide rail, 37-Auxiliary roller, 4-Agitator mechanism, 41-Connecting frame, 42-Agitator motor, 43-Agitator shaft, 44-Agitator blade, 5-Premixing mechanism, 51-Premixing tank, 52-Pumping pipeline. Detailed Implementation

[0022] The following will refer to the appendix in the example of this utility model. Figures 1-5The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Example 1:

[0024] like Figure 1-5 As shown, this utility model provides a conductive liquid processing device. The device is based on a frame 1 and has an overall vertical integrated structure. The frame 1 is welded from rectangular steel, and its lower end is fixed to the main tank 2 with bolts to ensure stable support of the main tank 2. An installation position is reserved on the top left side of the frame 1 for fixing the lifting mechanism 3. The lifting mechanism 3 is rigidly connected to the stirring mechanism 4. The stirring mechanism 4 penetrates the top cover plate of the main tank 2 in the vertical direction and extends into the interior of the main tank 2. A horizontal mounting platform is provided on the top right side of the frame 1. The premixing mechanism 5 is fixed to the mounting platform with bolts. The discharge end of the premixing mechanism 5 is connected to the feed port on the side wall of the main tank 2 through a pipe with a valve to form a continuous processing path.

[0025] The main tank 2 is a vertical cylindrical tank made of stainless steel, and the bottom of the tank is fixed to the lower end of the frame 1. The inner wall of the tank is mirror polished to reduce the adhesion of conductive liquid to the tank wall and facilitate subsequent cleaning. The top cover of the tank is equipped with an observation window to observe the internal stirring in real time, and also has reserved mounting holes for temperature and pressure sensors to facilitate the expansion of monitoring functions.

[0026] The lifting mechanism 3 includes:

[0027] Connecting sheet metal bracket 31: It is fixed to the upper end of the frame 1 by bolts, and the inner side is reserved for installation space; four sets of guide rails 36 are symmetrically welded on the outer side of the bracket. The guide rails 36 are stainless steel strips with circular cross sections and the surface of the rails is polished. They are used to provide lifting guidance for the stirring motor mounting base 32.

[0028] The inner side of the stirring motor mounting base 32 is fitted to the outer side of the connecting sheet metal bracket 31, and four sets of auxiliary rollers 37 are installed on the inner side corresponding to the position of the guide rail 36 via pins. The auxiliary rollers 37 are made of polyurethane, and the outer edge of the rollers is in close contact with the side of the guide rail 36, so that they can roll along the rail and reduce frictional resistance during lifting.

[0029] The reversing motor 33 is a stepper motor with a reducer, which is fixed to the top center of the connecting sheet metal bracket 31 through the motor bracket. Its output axis is downward and connected to the lifting screw 34 through a coupling. The sliding drive block 35 is fixed to the inner center of the stirring motor mounting base 32 and is threadedly engaged with the lifting screw 34. When the reversing motor 33 rotates forward / reverse, the lifting screw 34 rotates synchronously, driving the sliding drive block 35 to move up and down along the screw axis, thereby driving the stirring motor mounting base 32 and the stirring mechanism 4 to rise and fall smoothly along the guide rail 36, adapting to the stirring needs of different liquid levels in the main tank 2.

[0030] The stirring mechanism 4 includes:

[0031] Connecting bracket 41: It is connected to the stirring motor mounting base 32 by bolts, and its lower end is fixed to the housing of the stirring motor 42, which plays a role in stabilizing and supporting the stirring motor 42 and preventing the motor from shaking during stirring.

[0032] The stirring motor 42 is a variable frequency three-phase asynchronous motor, which is connected to the stirring shaft 43 through a flexible pin coupling. This can compensate for the installation error of the stirring shaft 43 and reduce vibration transmission. The stirring shaft 43 is a solid stainless steel shaft with a diameter of 30mm. Its length is adapted to the height of the main tank 2. The surface is treated with anti-corrosion. The lower end extends into the vicinity of the bottom of the main tank 2.

[0033] The stirring blade 44 adopts a three-layer spiral structure, fixed on the outside of the stirring shaft 33. The three layers of blades are evenly distributed along the axial direction, and each layer of blades is a continuous spiral shape, made of 316 stainless steel. When its spiral structure rotates, it can generate axial thrust and radial shear force on the conductive liquid: the axial thrust pushes the material at the bottom of the main tank 2 to flow upward, and the radial shear force tears apart the particle agglomerates in the conductive liquid. The three layers of blades work together to form a three-dimensional stirring flow field of "bottom → middle → top", ensuring that the conductive liquid can be fully dispersed from the bottom to the top of the tank, solving the problem of uneven stirring of traditional single-layer blades.

[0034] The premixing mechanism 5 includes:

[0035] The premix tank 51 is a vertical tank made of stainless steel, which is fixed to the top right side of the frame 1 by a bracket. The bottom of the tank is designed with a conical structure to prevent raw materials from settling at the bottom of the tank and to facilitate the complete discharge of the premixed material.

[0036] Two sets of pumping pipes 52 are symmetrically connected to the upper outer side of the premix tank 51, which are used to transport the two raw material base liquids of the conductive liquid and the high-concentration conductive particle slurry, respectively; the discharge port at the bottom of the premix tank 51 is connected to the top inlet of the main tank 2 through a pipe with a valve.

[0037] Working principle:

[0038] First, the two sets of pumping pipes 52 of the premixing mechanism 5 respectively transport the conductive liquid base liquid and the high-concentration conductive particle slurry to the premixing tank 51 to complete the primary mixing, initially reduce the risk of particle agglomeration, and form a low-viscosity premix. Since the bottom of the premixing tank 51 is conical, it can avoid raw material deposition. After the premixing is completed, the premix flows into the main tank 2 fixed at the lower end of the frame 1 through the connecting pipe.

[0039] Subsequently, the lifting mechanism 3 adjusts the position of the stirring mechanism 4 according to the liquid level of the main tank 2: the reversing motor 33 of the lifting mechanism 3 drives the lifting screw 34 to rotate, and the sliding drive block 35 meshing with the lifting screw 34 drives the stirring motor fixing seat 32 to move up and down along the guide rail 36 connected to the outer side of the sheet metal bracket 31. The auxiliary roller 37 on the inner side of the stirring motor fixing seat 32 reduces movement friction and ensures stability. Finally, the stirring mechanism 4 is adjusted to a suitable height so that the stirring blades 44 of the stirring mechanism 4 are completely immersed in the premixed material in the main tank 2, avoiding dead corners in the stirring.

[0040] Finally, the stirring mechanism 4 is activated for deep dispersion: the stirring motor 42 of the stirring mechanism 4 drives the stirring shaft 43 to rotate, and the three-layer spiral stirring blades 44 on the outside of the stirring shaft 43 rotate synchronously. When the stirring blades 44 rotate, they generate axial thrust and radial shear force. The axial thrust pushes the premixed material at the bottom of the main tank 2 to flow upward, while the radial shear force completely breaks up the remaining particle agglomerates, ensuring that the conductive liquid is mixed evenly. After processing, the mixed conductive liquid is discharged from the outlet at the bottom of the main tank 2, completing one conductive liquid processing cycle.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electroconductive liquid processing apparatus comprising a frame (1), a main tank body (2) being fixed to a lower end of the frame (1), characterized in that, A lifting mechanism (3) is fixed on the top left side of the frame (1), and a stirring mechanism (4) is fixed at the lower end of the lifting mechanism (3). The stirring mechanism (4) extends into the interior of the main tank (2). A premixing mechanism (5) is provided on the top right side of the frame (1). The lifting mechanism (3) includes a connecting sheet metal bracket (31) fixed to the frame (1) and a stirring motor fixing seat (32) sleeved on the outer side of the upper end of the connecting sheet metal bracket (31). A reversing motor (33) is fixed on the top of the connecting sheet metal bracket (31). A lifting screw (34) is connected to the output end of the reversing motor (33). A sliding drive block (35) is fixed on the inner side of the stirring motor fixing seat (32).

2. The conductive liquid processing apparatus according to claim 1, characterized in that, The outer side of the connecting sheet metal bracket (31) is symmetrically provided with four sets of guide rails (36), and the inner side of the stirring motor fixing seat (32) is provided with four sets of auxiliary rollers (37).

3. The conductive liquid processing apparatus according to claim 1, characterized in that, The lifting screw (34) allows the sliding drive block (35) to slide along the height direction of the connecting sheet metal bracket (31).

4. The conductive liquid processing apparatus according to claim 1, characterized in that, The stirring mechanism (4) includes a connecting frame (41), a stirring motor (42) is fixed at the upper end of the connecting frame (41), a stirring shaft (43) is connected to the output end of the stirring motor (42), and stirring blades (44) are fixed on the outer side of the stirring shaft (43).

5. The conductive liquid processing apparatus according to claim 4, characterized in that, The stirring blade (44) has a three-layer spiral structure.

6. The conductive liquid processing apparatus according to claim 1, characterized in that, The premixing mechanism (5) includes a premixing tank (51), with two sets of pumping pipes (52) connected to the outside of the premixing tank (51). The bottom of the premixing tank (51) is conical, and the premixing tank (51) is connected to the main tank (2) through a pipe.

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