A liquid metal heat conducting paste dispensing device

Abstract

The utility model relates to a kind of liquid metal heat-conducting paste's batching device, including support, and the front side of support top is equipped with main stirring barrel, and the rear side of support top is equipped with guide rail symmetrically, and the middle part of guide rail is fixedly connected with mounting plate, left mounting plate top is equipped with batching stirring barrel, and right mounting plate top is equipped with batching pulverizer cylinder, and stirring vane is rotatably arranged in main stirring barrel, and the rear side of main stirring barrel bottom is equipped with paste pipe, and the top of stirring vane is equipped with fixed ring, and the outside of fixed ring is connected with screw belt between the lower part of stirring vane.The utility model allows operator to carry out preliminary mixing of liquid component and the preparation work of solid filler crushing simultaneously to the batching barrel arranged symmetrically, two key pre-treatment processes of "pre-stirring" and "crushing / pre-dispersion" are integrated on the same device frame, and are linked with main stirring barrel through guide rail system, shorten production cycle, improve efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of thermal conductive paste technology, specifically relating to a mixing device for liquid metal thermal conductive paste. Background Technology

[0002] The preparation process of liquid metal thermal paste typically includes several key steps such as ingredient mixing, pre-stirring, breaking up agglomerates, and high-speed fine stirring. Specifically, the operator needs to manually put the precisely weighed liquid metal and base carrier into a pre-mixing container for pre-stirring. This step aims to initially wet and mix the raw materials to form a rough mixture. Subsequently, the pre-mixed paste is transferred to a high-shear dispersion device or a three-roll mill for crushing and fine grinding to break up the agglomerates that the liquid metal is prone to forming due to its high surface tension. Finally, it may need to be transferred to another container for degassing or final stirring.

[0003] The above process is quite complicated and requires multiple manual interventions or equipment connections, resulting in low overall production efficiency and making it difficult to meet the needs of large-scale, continuous production. Utility Model Content

[0004] The purpose of this invention is to provide a dispensing device for liquid metal thermal paste to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dispensing device for liquid metal thermal conductive paste, comprising a support, a main stirring tank provided on the front side of the top of the support, guide rails symmetrically provided on the rear side of the top of the support, an mounting plate fixedly connected to the middle of the guide rails, a dispensing and stirring tank provided on the top of the mounting plate on the left side, a dispensing and crushing cylinder provided on the top of the mounting plate on the right side, a stirring blade rotatably provided inside the main stirring tank, a paste outlet pipe provided on the rear side of the bottom of the main stirring tank, a fixing ring provided on the top of the stirring blade, and a screw ribbon connected between the outer side of the fixing ring and the lower part of the stirring blade.

[0006] Preferably, a baffle is slidably provided inside the guide rail, a leakage hole is opened on the front side of the baffle, a metering cylinder is provided at the bottom of the baffle directly below the leakage hole, and a bottom cover is rotatably provided on the rear side of the bottom of the metering cylinder.

[0007] Preferably, cylinders are symmetrically provided on the rear side of the bottom of the guide rail, and the extension and retraction ends of the cylinders are connected to the baffle.

[0008] Preferably, the bottom outer side of the guide rail is provided with a stop plate.

[0009] Preferably, the abutment is L-shaped.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model allows operators to simultaneously perform preliminary mixing of liquid components and crushing preparation of solid fillers by symmetrically arranged mixing tanks. It integrates the two key pre-treatment processes of "pre-mixing" and "crushing / pre-dispersion" on the same device frame and links them with the main mixing tank through a guide rail system, thereby shortening the production cycle and improving efficiency.

[0012] This invention achieves automated control of the material receiving and unloading process by using a cylinder to drive the baffle and the metering cylinder in coordinated motion, reducing manual intervention and improving production continuity and automation level.

[0013] The unique "stirring blade + fixing ring + spiral ribbon" combination design inside the main mixing tank of this utility model, especially the "larger at the top and smaller at the bottom" conical spiral ribbon, can forcibly scrape up the material on the tank wall when rotating and form a strong three-dimensional circulating flow field from top to bottom and from the periphery to the center, effectively eliminating the "dead zone" in the mixing of high viscosity materials and ensuring the uniformity of mixing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is an exploded view of the main mixing tank in this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the first part of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the second part of this utility model;

[0018] Figure 5 These are partial usage diagrams of this utility model;

[0019] Figure 6 This is a three-dimensional structural diagram of the third part of this utility model.

[0020] The following are the labels in the diagram: 1-Support, 2-Main mixing tank, 3-Guide rail, 4-Mounting plate, 5-Ingredient mixing tank, 6-Ingredient crushing cylinder, 7-Mixing blade, 8-Paste outlet pipe, 9-Fixing ring, 10-Screw ribbon, 11-Baffle, 12-Leakage hole, 13-Quantitative cylinder, 14-Bottom cover, 15-Cylinder, 16-Backing plate. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] like Figures 1 to 6 The device for dispensing liquid metal thermal paste shown includes a support 1, a main stirring tank 2 on the front side of the top of the support 1, and guide rails 3 symmetrically arranged on the rear side of the top of the support 1. A mounting plate 4 is fixedly connected to the upper middle part of the guide rails 3. A dispensing and stirring tank 5 is arranged on the top of the left mounting plate 4, and a dispensing and crushing cylinder 6 is arranged on the top of the right mounting plate 4. A stirring blade 7 is rotatably arranged inside the main stirring tank 2. A paste outlet pipe 8 is arranged on the rear side of the bottom of the main stirring tank 2. A fixing ring 9 is arranged on the top of the stirring blade 7. A screw ribbon 10 is connected between the outer side of the fixing ring 9 and the lower part of the stirring blade 7. A baffle 11 is slidably arranged inside the guide rail 3. A drain hole 12 is opened on the front side of the baffle 11. A metering cylinder 13 is arranged at the bottom of the baffle 11 directly below the drain hole 12. A bottom cover 14 is rotatably arranged on the rear side of the bottom of the metering cylinder 13. Cylinders 15 are symmetrically arranged on the rear side of the bottom of the guide rail 3. The telescopic end of the cylinder 15 is connected to the baffle 11. A stop plate 16 is arranged on the outer side of the bottom of the guide rail 3. The stop plate 16 is L-shaped.

[0024] This invention allows operators to simultaneously perform preliminary mixing of liquid components and crushing preparation of solid fillers by symmetrically arranged mixing tanks. It integrates the two key pre-treatment processes of "pre-mixing" and "crushing / pre-dispersion" on the same device frame and links them with the main mixing tank 2 through the guide rail system 3, shortening the production cycle and improving efficiency. This invention achieves automated control of the material receiving and discharging process by driving the baffle 11 and the metering cylinder 13 with the cylinder 15, reducing manual intervention and improving production continuity and automation. The unique "stirring blade 7 + fixing ring 9 + screw ribbon 10" combination design in the main mixing tank 2 of this invention, especially the "larger at the top and smaller at the bottom" conical screw ribbon 10, can forcibly scrape up the material on the tank wall when rotating and form a strong three-dimensional circulating flow field from top to bottom and from the periphery to the center, effectively eliminating the "dead zone" in the mixing of high-viscosity materials and ensuring the uniformity of mixing.

[0025] Example 2

[0026] like Figures 1 to 6The device for dispensing liquid metal thermal paste shown includes a support 1, a main mixing tank 2 on the front top of the support 1, and a stirring blade 7 rotatably connected inside the main mixing tank 2 via a drive component. The stirring blade 7 is a conventional spiral blade, which can achieve uniform stirring of the paste. To further achieve stirring of high-viscosity materials similar to paste, a fixing ring 9 is provided on the top of the stirring blade 7. The fixing ring 9 is also rotatably connected to the inside of the main mixing tank 2, so that the stirring blade 7 can drive the fixing ring 9 to rotate. A screw ribbon 10 is connected between the outer side of the fixing ring 9 and the lower part of the stirring blade 7. It is known that the diameter of the fixing ring 9 is the same as the inner diameter of the main mixing tank, and the tail end of the screw ribbon 10 is fixed to the outer side, so the screw ribbon 10 is in a state of being larger at the top and smaller at the bottom.

[0027] When mixing high-viscosity materials, conventional spiral blades mainly generate strong radial flow and limited axial flow, which easily creates "dead zones" in the container, especially the material in the container wall and bottom center area, which is difficult to be effectively drawn into the main mixing zone. In this embodiment, when the stirring blade 7 rotates, it drives the fixed ring 9 and the entire spiral ribbon 10 to rotate synchronously. Since the gap between the outer side of the spiral ribbon 10 and the container wall is extremely small, the rotation will forcibly scrape up the paste material adhering to the container wall and corners and lift it upward along the spiral surface of the spiral ribbon 10. At the same time, since the spiral ribbon 10 has a "larger at the top and smaller at the bottom" conical structure, the lifted material will naturally be guided to the center area and fall downward along the inner channel of the cone after reaching the top. This creates a strong and continuous three-dimensional circulating flow field from the periphery to the center and from top to bottom in the mixing container, effectively breaking up the material agglomeration and stratification caused by viscosity. Furthermore, liquid metal thermal paste often contains high-density metal particles, which are prone to sedimentation when left to stand or gently stirred. During the rotation of the spiral ribbon 10, a strong shear force is generated between its surface and the high-viscosity paste, which allows the particles to be better dispersed in the matrix and can continuously disturb the material, overcome the sedimentation tendency of the particles due to density differences, and maintain the stability of the mixed system.

[0028] Example 3

[0029] like Figures 1 to 6 The illustrated device for dispensing liquid metal thermal grease features symmetrical guide rails 3 on the rear top of a support 1. A mounting plate 4 is fixedly connected to the upper center of each guide rail 3. A dispensing and mixing tank 5 is mounted on the top of the left mounting plate 4, primarily used for preliminary stirring and blending of pre-mixed liquids or low-viscosity components. A dispensing and pulverizing cylinder 6 is mounted on the top of the right mounting plate 4, used for pulverizing and pre-dispersing potentially agglomerated solid fillers or additives. In actual preparation, the two key pretreatment processes of "stirring" and "pulverizing" are integrated into different modules of the same device, with their relative positions fixed by the guide rail system 3. This allows operators to perform both preparatory tasks simultaneously, significantly reducing preparation time.

[0030] After pretreatment, the symmetrically arranged batching tanks can be directly and accurately fed into the main mixing tank 2 in front, reducing the distance of material transfer and the possibility of spillage and contamination, and ensuring the accuracy of the batching ratio; and the relatively independent modules can be targeted during later replacement and maintenance, reducing maintenance costs.

[0031] Continuing from above, a baffle 11 is slidably installed inside the guide rail 3. A leakage hole 12 is opened on the front side of the baffle 11. A metering cylinder 13 is installed at the bottom of the baffle 11, directly below the leakage hole 12. A bottom cover 14 is rotatably installed on the rear side of the bottom of the metering cylinder 13. L-shaped abutments 16 are provided on the outer side of the bottom of the guide rail 3. It can be understood that when the leakage hole 12 on the baffle 11 is aligned with the bottom outlet of the mixing tank, the object in the mixing tank will enter the metering cylinder 13 through the leakage hole 12. At this time, the bottom cover 14 is closed by the abutment of the abutment 16 and closes the metering cylinder. At the bottom of 13, the metering cylinder 13 is a container with an open bottom. When it is necessary to feed the ingredients, the baffle 11 is pushed forward, and the drain hole 12 gradually moves forward. Instead, the solid area of ​​the baffle 11 seals the bottom outlet of the ingredient container. At the same time, the metering cylinder 13 gradually moves forward until the bottom cover 14 is no longer blocked by the baffle 16. Under the influence of the weight of the ingredients in the metering cylinder 13, it opens downward. At this time, the metering cylinder 13 is a container with an open top, and the feeding of ingredients is completed.

[0032] Furthermore, cylinders 15 are symmetrically provided on the rear side of the bottom of the guide rail 3. The telescopic end of the cylinder 15 is connected to the baffle 11, thereby enabling precise control of the baffle 11 and precise feeding of the ingredients.

[0033] Example 4

[0034] In another feasible technical solution, a pressure sensor (not shown in the figure) can be embedded in the bottom cover 14 to achieve precise feeding of the specified volume of ingredients. Specifically, the operator can pre-set the target weight value of the required ingredients through the control system. When the baffle 11 is in the receiving position and the material in the mixing bucket begins to flow into the metering cylinder 13 through the leakage hole 12, the pressure sensor on the bottom cover 14 begins to monitor the accumulation of the weight of the material in the cylinder in real time. Once the signal value detected by the pressure sensor reaches or slightly exceeds the preset value, the controller immediately drives the cylinder 15 to act. The extension end of the cylinder 15 responds quickly, driving the baffle 11 to move forward to cut off the outlet of the mixing bucket and stop the feeding. At the same time, the metering cylinder 13 moves forward to pour the precise amount of ingredients into the main mixing bucket 2.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A dispensing device for liquid metal thermal conductive paste, comprising a support frame, wherein a main stirring tank is provided on the front side of the top of the support frame, characterized in that, The support is symmetrically provided with guide rails on the top rear side. An installation plate is fixedly connected to the middle of the guide rail. A mixing tank is provided on the top of the installation plate on the left side, and a grinding tank is provided on the top of the installation plate on the right side. A stirring blade is rotatably provided inside the main mixing tank. A paste outlet pipe is provided on the bottom rear side of the main mixing tank. A fixing ring is provided on the top of the stirring blade. A screw ribbon is connected between the outer side of the fixing ring and the lower part of the stirring blade.

2. The dispensing device for liquid metal thermal conductive paste according to claim 1, characterized in that, A baffle is slidably provided inside the guide rail. A leakage hole is opened on the front side of the baffle. A metering cylinder is provided at the bottom of the baffle directly below the leakage hole. A bottom cover is rotatably provided on the rear side of the bottom of the metering cylinder.

3. The dispensing device for liquid metal thermal conductive paste according to claim 2, characterized in that, The bottom rear side of the guide rail is symmetrically equipped with cylinders, and the extension and retraction ends of the cylinders are connected to the baffle.

4. The dispensing device for liquid metal thermal conductive paste according to claim 1, characterized in that, Each guide rail has a stop plate on its bottom outer side.

5. The dispensing device for liquid metal thermal conductive paste according to claim 4, characterized in that, The abutment is L-shaped.

Images