Stirring dispersion machine for producing heat-conducting wave-absorbing material

Abstract

The utility model discloses a stirring dispersion machine for producing heat conduction wave-absorbing materials, the stirring dispersion machine comprises a pot body, a machine body and a buffer device, the pot body comprises an outer shell, an inner shell, a spiral blade, a discharge valve, a plurality of universal wheels and a cooling machine, the cooling machine provides cooling water for the stirring dispersion machine, and the machine body is connected with the cooling machine. A spiral blade is welded between the outer shell and the inner shell, cooling water in the cooling machine enters a space between the outer shell and the inner shell from a water inlet, a wall scraping plate, a dispersing paddle and a stirring paddle are arranged on the machine body, a gear-shaped dispersing disc is arranged on the dispersing paddle, the dispersing paddle and the stirring paddle are of hollow structures, cooling water can be introduced into the dispersing paddle and the stirring paddle, and the cooling water can be uniformly dispersed in the dispersing paddle and the stirring paddle. The buffer device comprises a buffer tank, an air inlet, an air outlet, a drain valve and a vacuum pump. The stirring paddle and the dispersing paddle are designed to be of a hollow structure, cooling water is introduced into the stirring paddle and the dispersing paddle, slurry in the middle of the pot body can be cooled, and the stirring paddle is particularly effective for pot bodies with large diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic interference and heat-conducting material preparation, in particular to a stirring and dispersing machine for producing heat-conducting and wave-absorbing materials. Background Art

[0002] With the rapid development of information technology, electronic exhibits are developing towards high frequency, miniaturization and integration, and electromagnetic interference and electromagnetic radiation pollution are becoming more and more serious. Absorbing materials can absorb electromagnetic waves incident on their surface and convert them into heat or other forms of energy, which can effectively solve the problems of electromagnetic interference and electromagnetic radiation pollution. For components such as CPUs and ICs, not only electromagnetic interference resistance is required, but also thermal conductivity is required. Thermally conductive absorbing materials that have both electromagnetic interference resistance and thermal conductivity have come into being. Thermally conductive absorbing materials are mainly made of thermal conductive powder, magnetic metal powder, silicone resin and other additives, which are stirred and dispersed evenly and then cast. In order to have higher thermal conductivity and lower reflection loss, as much thermal conductive powder and magnetic metal powder as possible should be added to the formula, so that the amount of silicone resin added is relatively small, there is no solvent in the formula, the viscosity of the slurry after stirring and dispersion is very large, and the slurry is difficult to degas. There are two major problems with existing stirring and dispersing machines: 1. The viscosity of the slurry is very high. A cross-linking agent is added to the formula. The higher the temperature, the easier it is for the cross-linking agent to react with silicone resin. The stirring pot is hollow and cooling water is introduced to reduce the heat generated during the stirring process. When the stirring pot is directly large, the stirring and dispersing speed is fast, and the slurry viscosity is high, the cooling effect of the slurry in the middle of the stirring pot is poor, and part of the slurry in the middle has begun to cross-link and solidify. 2. No solvent is added to the formula of the thermal conductive absorbing material, and the viscosity of the slurry is very high. Adding a degassing agent cannot completely eliminate bubbles, so vacuuming is used to eliminate bubbles. The stirring and dispersing paddle is below the liquid surface of the slurry, and air will be brought in during the extraction of the stirring and dispersing paddle. Utility Model Content

[0003] The purpose of the utility model is to provide a stirring and dispersing machine for the production of thermal conductive and wave-absorbing materials, aiming to solve the following problems existing in the existing equipment: 1. The cooling effect is not good, the middle of the pot body cannot be cooled, and the slurry part in the middle of the pot body has begun to cross-link and solidify, affecting the subsequent casting process; 2. The degassing is not thorough, and the direct consequence is that the cast product will have holes, which affects the thermal conductivity and absorption rate of the product.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A stirring and dispersing machine for producing heat-conducting and wave-absorbing materials, the stirring and dispersing machine consists of a pot body, a fuselage and a buffer device, the pot body consists of an outer shell, an inner shell, spiral blades, a discharge valve, a plurality of universal wheels and a cooler, the cooler provides cooling water for the stirring and dispersing machine, a spiral blade is welded between the outer shell and the inner shell, the cooling water in the cooler enters the space between the outer shell and the inner shell through a water inlet, returns to the cooler through a water outlet, and is recycled after cooling, the spiral blades make the cooling water flow along a spiral track, avoiding the problems of "dead corners" and uneven heat dissipation of cooling water in traditional pot bodies.

[0006] A discharge valve is installed at the bottom of the pot body, and a universal wheel is installed at the bottom of the pot body.

[0007] The body is provided with a scraper plate, a dispersing paddle and a stirring paddle, the dispersing paddle is provided with a gear-shaped dispersing disk, the dispersing paddle and the stirring paddle are hollow structures, and cooling water can be passed into the interior;

[0008] When the pot body is pushed to the bottom of the machine body, the pot body rises to be sealed with the machine body under the action of the liquid lifting device. At this time, the stirring paddle, the dispersing paddle and the scraper plate extend into the slurry in the pot body, and dissipate heat from the slurry in the middle of the pot body while stirring and dispersing.

[0009] A vacuum hole and a dust cover are arranged on the fuselage, and the gas coming out of the vacuum hole is first filtered through the dust cover to filter particulate matter.

[0010] The buffer device includes a buffer tank, an air inlet, an exhaust port, a drain valve and a vacuum pump. The air inlet is arranged on the top of the buffer tank. The gas filtered by the dust cover enters the buffer tank through the air inlet on the top of the buffer tank, and then enters the vacuum pump through the exhaust port. The vacuum pump continuously vacuums the pot body, and the drain valve can discharge the liquid in the buffer tank.

[0011] The surfaces of the outer shell, the inner shell and the spiral blades are provided with a stainless steel layer, and the water inlet and the water outlet are quick connectors.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The cooling effect is good. The utility model designs the stirring paddle and the dispersing paddle into a hollow structure, into which cooling water is passed, so that the slurry in the middle of the pot body can be cooled, which is particularly effective for pots with larger diameters.

[0014] (2) The utility model designs the stirring and dispersing paddles to be able to be raised and lowered. During use, the stirring and dispersing are performed while vacuuming. When the stirring and dispersing are uniform, the stirring and dispersing paddles are pulled out from the slurry surface. This process is carried out in a vacuum state and no air is introduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the structure of a stirring and dispersing machine used in the production of heat-conducting and wave-absorbing materials.

[0016] Figure 2 It is a structural schematic diagram of the fuselage of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the buffer device of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] A stirring and dispersing machine for producing heat-conducting and wave-absorbing materials, the stirring and dispersing machine consists of a pot body, a machine body and a buffer device.

[0020] like Figure 1 As shown, the pot body is composed of an outer shell 1, an inner shell 2, a spiral blade 3, a discharge valve 4, a plurality of universal wheels 7, and a cooler. The cooler provides cooling water for the stirring and dispersing machine. A spiral blade 3 is welded between the outer shell 1 and the inner shell 2. The cooling water in the cooler enters the space between the outer shell 1 and the inner shell 2 through the water inlet 5, and returns to the cooler through the water outlet 6. After cooling, it is recycled. The spiral blade 3 makes the cooling water flow along a spiral track. The discharge valve 4 is installed at the bottom of the pot body, and the universal wheel 7 is installed at the bottom of the pot body.

[0021] like Figure 2 As shown, the body is provided with a scraper plate 8, a dispersing paddle 9 and a stirring paddle 11, the dispersing paddle 9 is provided with a gear-shaped dispersing disk 10, the dispersing paddle 9 and the stirring paddle 11 are hollow structures, and cooling water can be passed into the interior. The body is provided with a vacuum hole 14 and a dust cover 15, and the gas coming out of the vacuum hole 14 is first filtered through the dust cover 15 to filter particulate matter.

[0022] When the pot body is pushed to the bottom of the machine body, the pot body rises to be sealed with the machine body under the action of the liquid lifting device, and at this time, the stirring paddle 11, the dispersing paddle 9 and the scraper plate 8 extend into the slurry in the pot body.

[0023] like Figure 3As shown, the buffer device includes a buffer tank 16, an air inlet 17, an exhaust port 18, a drain valve 19 and a vacuum pump 20. The air inlet 17 is arranged on the top of the buffer tank 16. The gas filtered by the dust cover 15 enters the buffer tank 16 through the air inlet 17 on the top of the buffer tank 16, and then enters the vacuum pump 20 through the exhaust port 18. The vacuum pump 20 continuously vacuums the pot body, and the drain valve 19 can discharge the liquid in the buffer tank.

[0024] The surfaces of the outer shell 1, the inner shell 2 and the spiral blade 3 are provided with a stainless steel layer, and the water inlet 5 and the water outlet 6 are quick connectors.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stirring and dispersing machine for producing heat-conducting and wave-absorbing materials, characterized in that: The stirring and dispersing machine is composed of a pot body, a machine body and a buffer device. The pot body is composed of an outer shell (1), an inner shell (2), a spiral blade (3), a discharge valve (4), a plurality of universal wheels (7) and a cooler. The cooler provides cooling water for the stirring and dispersing machine. The spiral blade (3) is welded between the outer shell (1) and the inner shell (2). The cooling water in the cooler enters the space between the outer shell (1) and the inner shell (2) through the water inlet (5) and returns to the cooler through the water outlet (6). After cooling, the cooling water is circulated. The spiral blade (3) causes the cooling water to flow along a spiral track. The discharge valve (4) is installed at the bottom of the pot body. The universal wheel (7) is installed at the bottom of the pot body. The machine body is provided with a scraper plate (8), a dispersing paddle (9) and a stirring paddle (11); the dispersing paddle (9) is provided with a gear-shaped dispersing disk (10); the dispersing paddle (9) and the stirring paddle (11) are hollow structures, and cooling water can be passed into the interior; When the pot body is pushed to the bottom of the machine body, the pot body rises to a seal with the machine body under the action of the liquid lifting device, and at this time, the stirring paddle (11), the dispersing paddle (9) and the scraper plate (8) extend into the slurry in the pot body; The body is provided with a vacuum hole (14) and a dust cover (15), and the gas coming out of the vacuum hole (14) is first filtered through the dust cover (15) to filter particulate matter; The buffer device comprises a buffer tank (16), an air inlet (17), an air outlet (18), a drain valve (19) and a vacuum pump (20); the air inlet (17) is arranged at the top of the buffer tank (16); the gas filtered by the dust cover (15) enters the buffer tank (16) through the air inlet (17) at the top of the buffer tank (16), and then enters the vacuum pump (20) through the air outlet (18); the vacuum pump (20) continuously evacuates the pot body; the drain valve (19) can discharge the liquid in the buffer tank.

2. The stirring and dispersing machine for producing heat-conducting and wave-absorbing materials according to claim 1, characterized in that: A stainless steel layer is provided on the surfaces of the outer shell (1), the inner shell (2) and the spiral blade (3); and the water inlet (5) and the water outlet (6) are quick connectors.

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