Vacuum filtering device for mixing and filtering heat-conducting gasket

Abstract

The invention provides a vacuum filtering device for mixing and filtering a heat-conducting gasket. The vacuum filtering device comprises a filtering box with a sealed cavity, and a plurality of filtering baffles which are arranged in the filtering box at intervals, a plurality of filtering baffles are arranged in the filtering box, gaps are reserved between the filtering baffles, and / or gaps are reserved between the filtering baffles and the inner wall of the filtering box, the gaps are communicated with one another, and a zigzag flow guide channel is formed in the filtering box; an air inlet and an air outlet are formed in the filter box, the air outlet is connected with a vacuum suction unit, and a certain included angle is formed between the filter baffle and the air inlet direction of the air inlet. By reasonably designing the structures of the filtering baffles and the flow guide channels, mixtures with different particle sizes and properties can be effectively intercepted, and the filtering precision and efficiency are improved.

Description

Technical Field

[0001] The present application relates to the field of filtration technology, and in particular to a vacuum filtration device for mixing and filtering thermally conductive gaskets. Background Art

[0002] Thermally conductive gaskets are made by kneading metal oxides and silicone oils. During the kneading process, the air in the powdered metal oxides and oily substances cannot be discharged in time. After calendering and vulcanization, the physical properties of the mixture mixed with air are greatly affected. Therefore, vacuuming is essential in the processing of conductive gaskets. During the vacuuming process, vacuum negative pressure is used to form a spatial pressure difference, so that the air in the mixture is extracted through the filter medium, while the mixed mixture is retained by the medium, thereby separating the air from the mixture.

[0003] The filter medium used in traditional processes is generally a filter screen, and the problems are:

[0004] 1. The particles and oil mixture intercepted on the filter are not easy to clean;

[0005] 2. If the filter mesh has a large aperture, the filtering effect cannot be achieved, and the exhaust pipe will be contaminated;

[0006] 3. If the filter is dense, the vacuuming efficiency is low. Summary of the invention

[0007] Based on the above-mentioned shortcomings, the present application provides a vacuum filtration device for mixing and filtering thermally conductive gaskets. It can effectively filter impurities such as powdery impurities, granular impurities, oily mixtures, and liquid mixtures mixed in the air generated during the kneading and mixing of thermally conductive gaskets, and has a good vacuum filtration effect.

[0008] This application is implemented as follows:

[0009] The example of the present application provides a vacuum filtration device for mixing and filtering thermally conductive gaskets, including a filter box with a sealed chamber, and a plurality of filter baffles disposed in the filter box;

[0010] There are gaps between the filter baffles, and / or there are gaps between the filter baffles and the inner wall of the filter box, and the gaps are interconnected, so that a meandering guide channel is formed in the filter box;

[0011] The filter box is provided with an air inlet and an air outlet, the air outlet is connected to a vacuum suction unit, and the filter baffle forms a certain angle with the air inlet direction of the air inlet.

[0012] Further, preferably, the filter box comprises a box body having an inner chamber and an end cover matched with the box body, and the box body and the end cover are detachably connected.

[0013] Further, preferably, either the box body or the end cover is provided with a first filter baffle, and the other is provided with a second filter baffle, and the first filter baffle and the second filter baffle are arranged at intervals and staggered.

[0014] Further, preferably, there is a space between both ends of the first filter baffle and the inner wall of the filter box, both ends of the second filter baffle abut against the inner wall of the filter box, and a passage is formed on the filter baffle.

[0015] Further, preferably, at least one filter screen is arranged in the filter box, and the filter screen is arranged close to the air outlet.

[0016] Further, preferably, the filter baffle close to the air inlet is in a C-shaped, U-shaped or groove structure with the opening facing the inlet end, and there is a space between at least one side of the filter baffle and the inner wall of the filter box to form a part of the diversion channel. Preferably, the open end of the filter baffle faces the air inlet.

[0017] Further, preferably, the filter baffle close to the air outlet end is in a C-shaped, U-shaped or groove structure with the opening facing the outlet end, and there is a space between at least one side of the filter baffle and the inner wall of the filter box to form a part of the diversion channel. Preferably, the open end of the filter baffle faces the air outlet.

[0018] Further, preferably, both ends of at least one of the filter baffles abut against the inner wall of the filter box, and a passage is formed on the filter baffle, and the passage forms a part of the diversion channel.

[0019] Further, preferably, the diversion channel includes a zigzag section and a narrow and long section.

[0020] Further, preferably, a sealing ring is arranged between the box body and between the box body and the end cover.

[0021] Beneficial effects

[0022] Compared with the prior art, the present application has at least the following beneficial effects:

[0023] 1. Good filtering effect

[0024] During the vacuum pumping process, a spatial pressure difference is formed by the vacuum negative pressure. Air and part of the mixture enter the filter box. Due to the relatively fast flow rate during the vacuum pumping process, the mixture will be intercepted by the filter baffle in the filter box, while the air will pass through the flow channel and be discharged smoothly to achieve filtration. The zigzag flow channel slows down the air flow. The gas can pass through, and the impurities will precipitate, so as to separate the impurities from the air. By reasonably designing the structure of the filter baffle and the diversion channel, mixtures with different particle sizes and properties can be effectively intercepted, and the accuracy and efficiency of filtration can be improved.

[0025] 2. Ensure the vacuum pumping efficiency

[0026] By reasonably designing the structures of the filter baffle and the diversion channel, while ensuring the filtering effect, it will not lead to low vacuum pumping efficiency due to the overly dense filtering structure, and can effectively improve the production efficiency of heat-conducting gasket processing. The reasonable combination of the zigzag section and the narrow and long section, as well as the staggered arrangement of the filter baffles, not only ensures the smooth passage of the air flow but also realizes effective impurity separation. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0028] Figure 1 Schematic perspective view of the vacuum filtration device provided by an example of the present application;

[0029] Figure 2 Schematic exploded perspective view of an implementation manner of the filter cartridge provided by an example of the present application;

[0030] Figure 3 For Figure 2 Cross-sectional view in one direction;

[0031] Figure 4 Schematic exploded perspective view of another implementation manner of the filter cartridge provided by an example of the present application;

[0032] Figure 5 Is Figure 4 Cross-sectional view in one direction.

[0033] Reference numerals: 10 - filter cartridge; 11 - cartridge body; 12 - end cap; 13 - air inlet; 14 - air outlet; 20 - filter baffle; 21 - first filter baffle; 22 - second filter baffle; 30 - diversion channel; 40 - filter mesh; 100 - vacuum suction unit; 200 - kneader. Detailed Embodiments

[0034] The following will describe in detail the embodiments of the technical solutions of the present application with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and the above drawings of this application are intended to cover non-exclusive inclusion.

[0036] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0037] Reference to "embodiments" herein means that a particular feature, structure or characteristic described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0038] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "middle", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0039] As Figures 1-5 shown, this application provides a vacuum filtration device for kneading and filtering heat-conducting gaskets, including a filter box 10 with a sealed chamber and a plurality of filter baffles 20 arranged at intervals in the filter box 10. The number of filter baffles 20 is not limited and includes, but is not limited to, 1, 2, 3, 4, 5, 6, 7, 8, 9, etc. The number of filter baffles 20 can be increased or decreased according to actual situations to achieve the best filtration effect on the filtrate.

[0040] There are gaps between each of the filter baffles 20, and / or there are gaps between the filter baffle 20 and the inner wall of the filter box 10. Each of the gaps communicates with each other, and a meandering diversion channel 30 is formed within the filter box 10. That is to say, the diversion channel 30 can be formed by the gaps between the filter baffles 20, or by the gaps between the filter baffle 20 and the inner wall of the filter box 10, or both. It is also possible that there are gaps left on the filter baffle 20, and each gap communicates with each other, and the diversion channel 30 formed within the filter box 10 is meandering. Through the gap design between the filter baffle 20 and the inner wall of the filter box 10, the fluid is forced to form a meandering path within the sealed chamber, increasing the contact time between the powdered metal oxide and the oily substance, promoting particle sedimentation and liquid separation, achieving the effect of extending the filtration path and improving the separation efficiency. Moreover, the meandering flow channel can disperse the fluid impact force, avoid directly flushing the filter mesh, and reduce the particle penetration or secondary entrainment of the oily substance caused by too high a flow rate.

[0041] An air inlet 13 and an air outlet 14 are provided on the filter box 10, and the air inlet 13, the diversion channel 30, and the air outlet 14 communicate with each other. A vacuum suction unit 100 is connected to the air outlet 14. The air inlet 13 communicates with a kneader 200 or a storage container connected to the output end of the kneader 200, which contains an air mixture formed by a heat-conducting gasket during the kneading process, such as powdered metal oxide, oily substance, and air. The filter baffle 20 forms a certain angle with the air inlet direction of the air inlet 13. Here, a certain angle means that the filter baffle 20 is not parallel to the air inlet direction. It can be a right angle, an acute angle, or an obtuse angle. The filter baffle 20 can block and filter the air entering the filter box 10. Preferably, the filter baffle 20 is perpendicular to the air inlet direction to achieve a better filtering effect. A vacuum suction unit 100 is connected to the air outlet 14, which can be a vacuum pump or other vacuum pumping devices. By sucking the filter box through the vacuum suction unit, a negative pressure is formed within the filter box to achieve the function of vacuum filtration. The vacuum suction unit can select a suitable model and power according to actual needs to ensure the vacuum pumping efficiency and effect.

[0042] In a preferred embodiment, the air inlet 13 and the air outlet 14 are provided in the middle area in the width direction of the filter box 10, that is, the air duct inlets and outlets are concentrated in the middle area. In this way, the vacuum suction force can be evenly distributed, avoiding too low or too high flow rates in the edge area, ensuring a uniform pressure gradient within the entire filter box 10, achieving the effect of balancing the flow field and improving the vacuum efficiency. The air flow path in the middle area is the shortest, which can reduce the retention of the fluid in the edge area and reduce the risk of particle sedimentation or oily substance residue, thereby achieving the effect of reducing the dead zone and improving the space utilization rate.

[0043] In a preferred embodiment, the included angle of the filter baffle 20 is adjustable. For example, one end of the filter baffle 20 is connected to the inner wall of the filter box 10 through a hinge, and the other end is linked to the drive mechanism through a telescopic connecting rod or a rotating shaft. Similar to the backrest adjustment mechanism of an automobile seat, the connecting rod is driven to expand and contract by a manual knob or an electric motor to change the angle of the filter baffle 20. The drive mechanism can be a hydraulic drive mechanism, an electric drive mechanism, a pneumatic drive mechanism, etc.; such a design has a simple structure and low cost. Another example is that the filter baffle 20 is connected to the inner wall of the filter box 10 through a spherical universal joint, and the drive mechanism adjusts the angle of the filter baffle 20 through a gear set or a hydraulic rod. This design can achieve local adjustment of the angle of the filter baffle 20 to adapt to the filtration of a non-uniform flow field. By setting the included angle between the filter baffle 20 and the filter box 10 to be adjustable, it can flexibly adapt to mixing media with different viscosities and particle sizes, ensuring the balance between filtration efficiency and pressure loss. Further, in order to intuitively understand the degree of the adjusted included angle, an angle scale is provided on the outer wall of the filter box 10, and the current angle of the filter baffle 20 is displayed through a pointer, or an angle encoder is integrated in the drive mechanism to feedback the angle signal of the filter baffle 20 to the control system to achieve closed-loop control. Mechanical limit blocks or electronic limit switches can also be set within the rotation range of the filter baffle 20 to prevent the angle adjustment from exceeding the safe range and prevent damage to the equipment caused by excessive rotation of the filter baffle 20.

[0044] In a preferred embodiment, for the to-be-filtered medium generated during the mixing process of the heat-conducting gasket, an anti-corrosion coating or an electroplated layer is sprayed on the surface of the filter baffle 20 to adapt to the corrosive environment of oily substances and metal oxides.

[0045] In this application, the filter baffle 20 plays a role in guiding the airflow. A diversion channel 30 is defined between the filter baffles 20 and between the filter baffle 20 and the inner wall of the filter box 10 to guide the airflow to flow along a winding path, extending the flow path and improving the separation efficiency of air and the mixture. The filter baffle 20 also plays a role in blocking impurities. Some larger particulate impurities will be blocked by the filter baffle 20 due to inertia when the gas turns back or changes direction, and settle in advance, reducing the burden on the filter screen. Each filter baffle 20 also plays a role in multi-layer filtration cooperation. The multi-layer filter baffles 20 form multi-stage filtration, enhancing the filtration efficiency, enabling components with different particle sizes or states to be intercepted under the filter baffle 20 in stages, thereby achieving efficient gas-liquid separation.

[0046] During the vacuum pumping process, a spatial pressure difference is formed by the vacuum negative pressure. The air and impurity mixture enters the filter box 10. Due to the relatively fast flow rate during the vacuum pumping process, the impurity mixture will be intercepted by the filter baffle 20 in the filter box 10, while the air will pass through the winding diversion channel 30 and be discharged smoothly, realizing filtration. This structural design enables the airflow entering the filter box 10 to change direction, increasing the contact area and time between the airflow and the filter baffle 20 and improving the filtration effect.

[0047] In a preferred embodiment, the filter cartridge 10 includes a cartridge body 11 having an inner cavity and an end cap 12 that cooperates with the cartridge body 11, and the cartridge body 11 and the end cap 12 are detachably connected. This detachable structure facilitates the cleaning and maintenance of the interior of the filter cartridge 10. When a certain amount of mixture accumulates inside the filter cartridge 10, the cartridge body 11 and the end cap 12 can be conveniently opened for cleaning.

[0048] The cartridge body 11 and the end cap 12 of the filter cartridge 10 can be designed with increased thickness to improve their overall strength. During the vacuum pumping process, the filter cartridge 10 needs to withstand a certain internal and external pressure difference. The increased thickness design can ensure that the filter cartridge 10 will not be deformed due to pressure and affect the filtration effect and sealing performance. It can be made of materials such as aluminum, stainless steel, alloy, etc., and the cartridge body 11 and the end cap 12 can be subjected to hard anodizing treatment to extend their service life.

[0049] In a preferred embodiment, a sealing ring is provided between the cartridge body 11 and the end cap 12. This ensures the sealing performance of the filter cartridge 10 and prevents gas leakage. Good sealing performance can ensure the stability and reliability of the vacuum pumping process and improve the filtration effect.

[0050] In a preferred embodiment, a first filter baffle 21 is provided on either the cartridge body 11 or the end cap 12, and a second filter baffle 22 is provided on the other. The first filter baffle 21 and the second filter baffle 22 are arranged at intervals and staggered. Here, the staggered arrangement means that the first filter baffle 21 and the second filter baffle 22 are arranged in sequence, or the second filter baffle 22 and the first filter baffle 21 are arranged in sequence. The numbers of the first filter baffle 21 and the second filter baffle 22 are not limited, such as including but not limited to 1, 2, 3, 4, 5, 6, 7, 8, 9, etc. By arranging the filter baffles 20 at intervals and staggered, the tortuosity of the diversion channel 30 is increased, which is more conducive to the precipitation and separation of impurities. The sizes and shapes of the first filter baffle 21 and the second filter baffle 22 can be adjusted according to actual needs. The filter baffles 20 at different positions can intercept mixtures with different particle sizes and properties, improving the filtration accuracy. And with this split structure, after opening the filter cartridge 10, the space between the filter baffles 20 in both the end cap 12 and the cartridge body 11 becomes larger, which is conducive to cleaning the end cap 12 and the cartridge body 11 respectively.

[0051] In a preferred embodiment, there is a gap between the two ends of the first filter baffle 21 and the inner wall of the filter box 10. The two ends of the second filter baffle 22 abut against the inner wall of the filter box 10, and a passageway is formed in the filter baffle 20. At this time, the diversion channel 30 formed by the first filter baffle 21, the second filter baffle 22 and the inner wall of the filter box 10 body presents an S shape. Such a design enables the diversion channel to better form a tortuous section and a narrow and long section, achieving a better filtering effect. The filter baffle 20 plays a role in guiding the air flow. The first filter baffle 21 divides the air flow inhaled into the filter box 10 body into two paths; the alternately arranged first filter baffle 21 and second filter baffle 22 guide the air flow to flow along an "S" shaped path, extending the flow path and improving the separation efficiency of air and the mixture. The filter baffle 20 also plays a role in blocking impurities. Some larger particulate impurities will be blocked by the filter baffle 20 due to inertia when the gas turns back or changes direction, and settle in advance, reducing the burden on the filter screen at the rear end; the multi-layer filter baffle 20 forms multi-stage filtration, enhancing the filtration efficiency, enabling components of different particle sizes or states to be intercepted in stages under the filter baffle 20, thereby realizing efficient gas-liquid separation.

[0052] In a preferred embodiment, at least one filter screen 40 is arranged in the filter box 10. As Figures 4-5 shown, the filter screen 40 is arranged close to the air outlet 14. The filter screen 40 is arranged close to the air outlet 14 based on the fact that larger particulate impurities are blocked and settled by the front filter baffle 20. At this time, the filter screen 40 plays a role in filtering small particulate impurities and separating the air mixture, effectively intercepting the viscous substances in the mixture flowing through the filter screen 40 and only allowing air to pass through, thereby realizing efficient and high-quality gas-liquid separation; the gas escape channel under negative pressure extraction. In a vacuum state, the bubbles or free air in the mixture can pass through the filter screen 40 and be discharged, which helps to defoam and exhaust. And the filter screen 40 is detachable, facilitating cleaning and replacement, extending the service life of the device and maintaining the stability of the filtering effect. The filter screen 40 can be set to one, or can be set to 2, 3, or even more, and the specific number is not limited here. In this application, the multi-layer filter baffle and the filter screen 40 form multi-stage filtration, enhancing the filtration efficiency, enabling components of different particle sizes or states to be intercepted in stages under the filter screen 40, thereby realizing efficient gas-liquid separation.

[0053] In a preferred embodiment, the pore diameter of the filter holes of the filter net 40 gradually increases from the outer edge to the central position. Large particles are intercepted on the outer layer, and small particles gradually penetrate into the inner layer, avoiding the concentration of all particles in the same area and reducing the possibility of local blockage. The gradient design of the pore diameter of the filter holes can reduce the stress concentration during the filtration process of the filter net, and reduce the risk of breakage caused by excessive local stress. The gradient distribution of the filter holes makes the structure of the filter net more stable and improves its ability to withstand fluid impact and pressure. The gradient design of the filter holes can increase the degree of turbulence of the fluid on the surface of the filter net, which helps to separate the particles from the fluid and improve the filtration effect. The gradient design of the pore diameter of the filter holes helps to reduce the resistance of the fluid during the filtration process, enabling the vacuum suction unit to work more efficiently and increasing the filtration speed. Thus, the effects of efficient filtration, reduced maintenance costs, strong adaptability, high durability, and optimized vacuum filtration are achieved.

[0054] In a preferred embodiment, a detachably connected filter net 40 is provided at the port of the air outlet 14, and the filter net 40 can completely cover the air outlet 14. The air flowing through the filter net 40 has been filtered by multiple filter baffles 20. Large-particle impurities have been separated and precipitated from the air. At this time, the filter net 40 is provided to further filter the air and improve the filtration effect. Moreover, the detachable filter net 40 is convenient for cleaning and replacement to ensure the filtration effect. When the filter net 40 is blocked or damaged, it can be quickly disassembled for cleaning or replacement without complex maintenance of the entire device.

[0055] In a preferred embodiment, the filter baffle 20 near the air inlet 13 is of a C-shaped, U-shaped or groove structure with an opening facing the air inlet, and there is a gap between at least one side of the filter baffle 20 and the inner wall of the filter box 10 to form a diversion channel 30. This structure can better disperse and guide the airflow entering the filter box 10, suddenly changing the flow direction of the airflow and improving the filtration efficiency. The C-shaped, U-shaped or groove structure can increase the contact area with the airflow, making it easier to intercept the mixture. Preferably, there are gaps between both sides of the filter baffle 20 and the inner wall of the filter box 10 to form a diversion channel 30. That is to say, the air mixture entering the air inlet 13 is first intercepted by the C-shaped, U-shaped or groove-structured filter baffle 20, and then flows through the diversion channels 30 on both sides, which can better disperse and guide the airflow entering the filter box 10 and improve the filtration efficiency.

[0056] In a preferred embodiment, the filter baffle 20 near the air outlet 14 is a C-shaped, U-shaped or grooved structure with an opening toward the outlet end, and a gap is left between at least one side of the filter baffle 20 and the inner wall of the filter box 10 to form a guide channel 30. This structure helps to smoothly discharge the filtered airflow out of the filter box 10, and further prevents possible residual tiny impurities from entering the exhaust pipe. Preferably, the two sides of the filter baffle 20 are respectively spaced apart from the inner wall of the filter box 10 to form a guide channel 30, that is, the outflowing air mixture is gathered toward the air outlet 14 after flowing through the guide channels 30 on both sides, which is more conducive to smoothly discharging the filtered airflow out of the filter box 10, and further prevents possible residual tiny impurities from entering the exhaust pipe, thereby improving the filtering efficiency.

[0057] In a preferred embodiment, at least two ends of the filter baffle 20 are abutted against the inner wall of the filter box 10, and a passage is provided on the filter baffle 20, and the passage forms a guide channel 30. The provision of the passage further increases the diversity of the guide channel 30, which is beneficial to the uniform distribution of the airflow and the precipitation of impurities. One or more filter baffles 20 of this shape may be provided, including but not limited to 2, 3, 4, 5, 6, 7, etc., and the location thereof is not limited, and it is preferably provided between other filter baffles 20. Passages of different shapes and sizes can adapt to airflows of different flow rates and properties, thereby improving the adaptability of the filter device.

[0058] In a preferred embodiment, at least one filter baffle 20 is a strip structure, and a gap is left between at least one end of the filter baffle 20 of the strip structure and the inner wall of the filter box 10 to form a guide channel 30; preferably, both sides of the strip structure have a gap left between them and the inner wall of the filter box 10 to form a guide channel 30. Such a design can divide the airflow into two paths, increase the tortuosity of the guide channel 30, and facilitate the separation of impurities from the air.

[0059] In a preferred embodiment, the guide channel 30 includes a tortuous section and a narrow section, and the tortuous section and the narrow section are interconnected. The tortuous section here refers to the curved guide channel 30, and the narrow section refers to the straight and narrow guide channel 30. The tortuous section slows down the airflow, allowing the gas to pass through and impurities to settle; the narrow section facilitates the separation of impurities from the air. By reasonably designing the combination of the tortuous section and the narrow section, it is possible to ensure the filtering effect while facilitating cleaning as much as possible. For example, the length and curvature of the tortuous section can be appropriately increased, and the number and length of the narrow sections can be reduced to reduce the difficulty of cleaning.

[0060] In a preferred embodiment, the filter baffle 20 is made of a high-strength and corrosion-resistant material, such as stainless steel, ceramics, etc. Stainless steel has good corrosion resistance and mechanical strength, and can withstand the pressure and air flow impact during the vacuum pumping process; ceramic materials have excellent high-temperature resistance and chemical corrosion resistance, and are suitable for some special processing environments.

[0061] In a preferred embodiment, the vacuum filtration device can also be equipped with an intelligent monitoring and alarm system, such as a pressure sensor, a vision device, etc. arranged in the filter box 10, for monitoring parameters such as the pressure in the filter box 10 and the degree of blockage of the filter mesh 40. When the pressure is abnormal or the filter mesh 40 is severely blocked, the system will promptly send an alarm signal to remind the operator to handle it, avoiding affecting production due to equipment failure.

[0062] In a preferred embodiment, a guide rail (not shown in the figure) is provided in the filter box 10, and each filter baffle 20 can move along the extending direction of the guide rail. The design of the guide rail enables the distance between the filter baffles 20 to be adjusted according to the filtration needs, and when cleaning later, increasing the distance between the filter baffles 20 can facilitate cleaning.

[0063] In a preferred embodiment, the filter baffle 20 is detachably connected to the filter box 10. The detachable connection includes snap connection, concave-convex fit, tight fit, plug connection, etc. This detachable structure facilitates the cleaning and maintenance of the inside of the filter box 10. When a certain amount of mixture accumulates inside the filter box 10 and on the filter baffle 20, the filter baffle 20 can be conveniently detached for cleaning.

[0064] In a specific embodiment, the implementation of the vacuum filtration device of the present application includes the following processes:

[0065] (1) Device assembly

[0066] Install the first filter baffle in the box body and install the second filter baffle on the end cover, so that the first filter baffle and the second filter baffle are arranged at intervals in an alternating manner.

[0067] Among them, install a filter baffle with a C-shaped, U-shaped or groove structure with an opening facing the inlet end at a position close to the air inlet, and ensure that there is a distance between it and the inner wall of the filter box to form a diversion channel.

[0068] Install a filter baffle with a C-shaped, U-shaped or groove structure with an opening facing the outlet end at a position close to the air outlet.

[0069] Both ends of at least one filter baffle abut against the inner wall of the filter box, and a passage is provided on the filter baffle to form a diversion channel.

[0070] At least one filter baffle is in a strip structure, and there is a gap between at least one end of the filter baffle of the strip structure and the inner wall of the filter box to form a diversion channel.

[0071] A detachable filter net is installed at the suction end port.

[0072] The box body and the end cover are detachably connected by a suitable connection method (such as bolt connection, snap connection, etc.), and a sealing ring is set at the connection to ensure the sealing performance.

[0073] Connect the vacuum suction device to the air outlet.

[0074] (II) Working process

[0075] Start the vacuum suction device to form a negative pressure in the filter box.

[0076] The mixture and air during the processing of the heat-conducting gasket enter the filter box through the air inlet.

[0077] The mixture is intercepted by the filter baffle, and the air smoothly discharges through the tortuous diversion channel (including the zigzag section and the narrow section) formed by the gaps between the filter baffles.

[0078] The zigzag section slows down the air flow and precipitates impurities; the narrow section further separates impurities and air.

[0079] The filtered air is drawn out by the vacuum suction device through the air outlet, realizing the separation of air and the mixture.

[0080] (III) Cleaning and maintenance

[0081] When it is necessary to clean the mixture in the filter box, first turn off the vacuum suction device.

[0082] Disconnect the connection between the box body and the end cover and open the filter box.

[0083] Clean the mixture intercepted on the surface of the filter baffle.

[0084] Disassemble the filter net at the air outlet for cleaning or replacement.

[0085] After cleaning, reassemble the device according to the assembly steps and it can be used again.

[0086] Implementing the vacuum filtration device of the present application has at least the following beneficial effects:

[0087] 1. Good filtering effect: During the vacuum pumping process, a spatial pressure difference is formed by the vacuum negative pressure. Air and some mixtures enter the filter box. Due to the relatively fast flow rate during the vacuum pumping process, the mixtures will be intercepted by the filter baffles in the filter box, while the air will pass through the flow channels and be discharged smoothly, achieving filtration. The zigzag flow channels slow down the air flow. The gas can pass through, and the impurities will precipitate, thus separating the impurities from the air. By reasonably designing the structures of the filter baffles and the diversion channels, mixtures with different particle sizes and properties can be effectively intercepted, improving the accuracy and efficiency of filtration.

[0088] 2. Easy to clean: The filter box adopts a detachable structure. The filter baffles are arranged at intervals in a staggered manner, and a detachable filter net is set at the suction end port. These designs enable the operator to clean the mixtures intercepted on the surface of the medium more simply, solving the problem that traditional filter nets are not easy to clean. The detachable filter net and filter baffles can be quickly disassembled for cleaning or replacement, greatly shortening the cleaning time and improving the production efficiency.

[0089] 3. Ensure the vacuum pumping efficiency: By reasonably designing the structures of the filter baffles and the diversion channels, while ensuring the filtering effect, it will not cause low vacuum pumping efficiency due to the overly dense filtering structure, and can effectively improve the production efficiency of heat-conducting gasket processing. The reasonable combination of the zigzag section and the narrow and long section, as well as the staggered arrangement of the filter baffles at intervals, not only ensures the smooth passage of the air flow but also realizes effective impurity separation.

[0090] 4. Strong adaptability: Designs such as aisles with different shapes and sizes and filter baffles made of various materials enable this vacuum filtering device to adapt to the filtering requirements of mixtures with different flow rates, properties, and processing environments. Whether it is a processing environment with high temperature, high pressure, or strong corrosiveness, this device can achieve good filtering effects.

[0091] 5. High reliability: The thickened design of the filter box, the setting of the sealing ring, and the intelligent monitoring and alarm system (optional), etc., improve the reliability and stability of the device. The thickened design ensures that the filter box does not deform under the action of the pressure difference. The sealing ring prevents gas leakage. The intelligent monitoring and alarm system can detect and handle equipment failures in a timely manner, ensuring the continuous progress of production.

[0092] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A vacuum filtration device for kneading and filtering heat-conducting gaskets, characterized in that, It includes a filter cartridge with a sealed chamber and a plurality of filter baffles arranged at intervals inside the filter cartridge; There are gaps between each of the filter baffles, and / or there are gaps between the filter baffles and the inner wall of the filter cartridge, and the gaps communicate with each other, forming a meandering diversion channel inside the filter cartridge; An air inlet and an air outlet are formed on the filter cartridge, and a vacuum suction unit is connected to the air outlet, and the filter baffle forms a certain angle with the air inlet direction of the air inlet.

2. The vacuum filtration device for kneading and filtering of thermal conductive gaskets according to claim 1, characterized in that, The filter cartridge includes a cartridge body with an inner chamber and an end cover that cooperates with the cartridge body, and the cartridge body and the end cover are detachably connected.

3. The vacuum filtration device for kneading and filtering of thermal conductive gaskets according to claim 2, wherein, Either the cartridge body or the end cover is provided with a first filter baffle, and the other is provided with a second filter baffle, and the first filter baffle and the second filter baffle are arranged at intervals and staggered.

4. The vacuum filtration device for kneading and filtering heat-conducting gaskets according to claim 3, wherein, There are spacings between the two ends of the first filter baffle and the inner wall of the filter cartridge, the two ends of the second filter baffle abut against the inner wall of the filter cartridge, and a passage is formed on the filter baffle.

5. The vacuum filtration device for kneading and filtering heat-conducting gaskets according to claim 1, wherein, At least one filter screen is arranged inside the filter cartridge, and the filter screen is arranged close to the air outlet.

6. The vacuum filtration device for kneading and filtering of thermal conductive gaskets according to claim 1, characterized in that, The filter baffle close to the air inlet is of a C-shaped, U-shaped or groove structure with an opening facing the air inlet end, and there is a spacing between at least one side of the filter baffle and the inner wall of the filter cartridge to form a part of the diversion channel; and / or, the filter baffle close to the air outlet is of a C-shaped, U-shaped or groove structure with an opening facing the air outlet end, and there is a spacing between at least one side of the filter baffle and the inner wall of the filter cartridge to form a part of the diversion channel.

7. The vacuum filtration device for kneading and filtering of thermal conductive gaskets according to claim 1, characterized in that, The two ends of at least one of the filter baffles abut against the inner wall of the filter cartridge, and a passage is formed on the filter baffle, and the passage forms a part of the diversion channel; and / or, At least one filter baffle is of a strip structure, and there is a spacing between at least one end of the strip-shaped filter baffle and the inner wall of the filter cartridge to form a part of the diversion channel.

8. The vacuum filtration device for kneading and filtering of heat-conducting gaskets according to claim 1, wherein, The diversion channel includes a zigzag section and a narrow section.

9. The vacuum filtration device for kneading and filtering of thermal conductive gaskets according to claim 1, characterized in that, The vacuum filtration device further includes an intelligent monitoring and alarm system arranged inside the filter cartridge.

10. The vacuum filtration device for kneading and filtering of thermal conductive gaskets according to any one of claims 1-9, characterized in that, A guide rail is arranged inside the filter cartridge, and each of the filter baffles can move along the extending direction of the guide rail; and / or, The filter baffle and the filter cartridge are detachably connected.

Images