A high pressure homogenization system for insulation sheet particle processing

Abstract

The application provides a high-pressure homogenization system for insulating sheet particle processing, comprising a feeding device, a material conveying device, a high-pressure homogenization host, a heat exchange cooling device, a discharging device and a control unit; the feeding device, the material conveying device, the high-pressure homogenization host, the heat exchange cooling device and the discharging device are sequentially connected through a material pipeline; the control unit is electrically connected with the material conveying device, the high-pressure homogenization host and the heat exchange cooling device respectively. The application can not only improve the production efficiency of insulating sheets, but also solve the problems of surface particle defects and blackening and color difference of insulating sheet products, and greatly improve the yield of products.

Description

Technical Field

[0001] This application relates to the field of insulating sheet production, and in particular to a high-voltage homogenization system for processing insulating sheet particles. Background Technology

[0002] Electronic and communication equipment inevitably generates heat during operation. For every 2°C increase in temperature of electronic components, the reliability decreases by 10%. The lifespan at a temperature rise of 50°C is only 1 / 6 of that at a temperature rise of 25°C. Thermal interface materials are mainly used to solve the heat dissipation problem of electronic communication equipment.

[0003] Currently, most domestic companies producing insulating sheets face the problem of particles on the product surface. These particles not only fail to meet customer needs but also affect the product's performance and thermal resistance. Furthermore, producing products with particles poses a significant risk of abnormalities after assembly and use by customers.

[0004] Traditionally, the industry has used three-roll mills to deal with this type of particle problem. However, each grinding operation of a three-roll mill not only results in blackening and discoloration, but also easily wears down the equipment. After the equipment wears down, poor grinding will also result in particles. In addition, the efficiency of three-roll mills is also low. Utility Model Content

[0005] In view of the aforementioned problems, this application is made in order to provide a high-voltage homogenization system for processing insulating sheet particles that overcomes or at least partially solves the aforementioned problems.

[0006] A high-voltage homogenization system for processing insulating sheet particles includes a feeding device, a material conveying device, a high-voltage homogenizer, a heat exchange and cooling device, a discharge device, and a control unit; the feeding device, the material conveying device, the high-voltage homogenizer, the heat exchange and cooling device, and the discharge device are connected sequentially through material pipelines.

[0007] The outlet pipe of the heat exchange and cooling device is connected to a three-way valve. One outlet of the three-way valve is connected to the discharge device, and the other outlet is connected to the inlet of the material conveying device through a circulation pipe, forming a material circulation loop.

[0008] The control unit is electrically connected to the material conveying device, the high-pressure homogenizer, and the heat exchange and cooling device, respectively.

[0009] Furthermore, the three-way valve is an electrically controlled valve, electrically connected to the control unit, and controlled by the control unit to switch the material flow direction.

[0010] Furthermore, a sight glass or a flow monitoring sensor is installed on the circulation pipeline, and the sight glass or the flow monitoring sensor is electrically connected to the control unit.

[0011] Furthermore, the operating pressure range of the high-pressure homogenizer is 20MPa to 150MPa.

[0012] Furthermore, the heat exchange and cooling device includes a chiller and a shell-and-tube heat exchanger. The chiller is connected to the shell-and-tube heat exchanger through an inlet pipe and an outlet pipe, respectively, to form a circulating heat exchange and cooling loop.

[0013] Furthermore, the feeding device is a closed feeding hopper.

[0014] Furthermore, a control valve is installed on the outlet pipe of the feeding device. The control valve is an electrically controlled valve and is electrically connected to the control unit.

[0015] Furthermore, the material conveying device is a conveying pump, and the conveying pump is electrically connected to the control unit.

[0016] Furthermore, the control unit includes a human-machine interface for setting and displaying the system's working pressure, material temperature, and flow rate parameters.

[0017] This application has the following advantages:

[0018] In the embodiments of this application, a feeding device, a material conveying device, a high-pressure homogenizer, a heat exchange and cooling device, a discharge device, and a control unit are used. These devices are sequentially connected via material pipelines. The control unit is electrically connected to the material conveying device, the high-pressure homogenizer, and the heat exchange and cooling device. By modularly integrating five functional devices—feeding, conveying, homogenizing, cooling, and discharging—and centrally controlling them with a control unit, the system achieves higher integration compared to the decentralized operation of traditional three-roll mills. The high-pressure homogenizer crushes particles through pressure, avoiding the blackening and discoloration problems caused by contact between grinding components, while also improving processing efficiency compared to three-roll mills. The control unit enables coordinated operation of all devices, solving the instability problem of traditional equipment relying on manual control. This application not only improves the production efficiency of insulating sheets but also solves problems such as surface particle defects and blackening / discoloration in insulating sheet products, significantly increasing the product yield. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of a high-voltage homogenization system for processing insulating sheet particles provided in an embodiment of this application.

[0021] Reference numerals in the attached drawings: 1. Feeding device; 2. Material conveying device; 3. High-pressure homogenizer; 4. Heat exchange and cooling device; 5. Discharge device; 6. Material pipeline; 7. Three-way valve; 8. Circulation pipeline; 9. Chiller; 10. Shell-and-tube heat exchanger; 11. Inlet pipe; 12. Outlet pipe; 13. Control valve. Detailed Implementation

[0022] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] Reference Figure 1 The image shows an embodiment of this application providing a high-voltage homogenization system for processing insulating sheet particles. Specifically, it includes a feeding device 1, a material conveying device 2, a high-voltage homogenizer 3, a heat exchange and cooling device 4, a discharge device 5, and a control unit. The feeding device 1, material conveying device 2, high-voltage homogenizer 3, heat exchange and cooling device 4, and discharge device 5 are sequentially connected via a material pipeline 6. The control unit is electrically connected to the material conveying device 2, the high-voltage homogenizer 3, and the heat exchange and cooling device 4, respectively.

[0024] In the embodiments of this application, a feeding device 1, a material conveying device 2, a high-pressure homogenizer 3, a heat exchange and cooling device 4, a discharge device 5, and a control unit are used. The feeding device 1, material conveying device 2, high-pressure homogenizer 3, heat exchange and cooling device 4, and discharge device 5 are sequentially connected via a material pipeline 6. The control unit is electrically connected to the material conveying device 2, the high-pressure homogenizer 3, and the heat exchange and cooling device 4, respectively. By modularly integrating five functional devices—feeding, conveying, homogenizing, cooling, and discharging—and using a control unit for centralized control, the system achieves higher integration compared to the decentralized operation of traditional three-roll mills. The high-pressure homogenizer 3 crushes particles through pressure, avoiding the blackening and discoloration problems caused by contact between grinding parts, while also improving processing efficiency compared to three-roll mills. The intervention of the control unit enables coordinated operation of the various devices, solving the instability problem of traditional equipment relying on manual control. This application not only improves the production efficiency of insulating sheets but also solves problems such as surface particle defects and blackening / discoloration of insulating sheet products, significantly improving the product yield.

[0025] The following will further describe a high-voltage homogenization system for processing insulating sheet particles in this exemplary embodiment.

[0026] In this embodiment, the feeding device 1, material conveying device 2, high-pressure homogenizer 3, heat exchange and cooling device 4, and discharge device 5 are sequentially connected through material pipeline 6, forming a unidirectional main path for material processing. The control unit is electrically connected to the material conveying device 2, the high-pressure homogenizer 3, and the heat exchange and cooling device 4, respectively, and is used to regulate the operating parameters of each device. By modularly integrating the five functional devices of feeding, conveying, homogenizing, cooling, and discharging, and achieving centralized control through the control unit, the system integration is higher than that of the decentralized operation of traditional three-roll mills. The material is fed in through the feeding device 1 and conveyed to the high-pressure homogenizer 3 through the material conveying device 2. The high-pressure homogenizer 3 provides extremely strong shearing, impact, and cavitation effects, which can thoroughly break up the agglomerated particles in the insulating sheet slurry, avoiding the problem of blackening and discoloration caused by contact between grinding parts. At the same time, the processing efficiency is increased by more than 30% compared to the three-roll mill. The intervention of the control unit enables the coordinated operation of each device, solving the problem of insufficient stability of traditional equipment that relies on manual control.

[0027] As an example, the outlet pipe of the heat exchange cooling device 4 is connected to a three-way valve 7. One outlet of the three-way valve 7 is connected to the discharge device 5, and the other outlet is connected to the inlet of the material conveying device 2 through the circulation pipe 8, forming a material circulation loop of material conveying device 2-high pressure homogenizer 3-heat exchange cooling device 4-three-way valve 7-circulation pipe 8-material conveying device 2.

[0028] Through the design of the three-way valve 7 and the circulation pipeline 8, materials that still have particle residue after the initial homogenization process can be circulated for secondary or even multiple times without the need for manual unloading and rework. The thoroughness of material particle processing is improved to over 99%. The circulation loop is adapted to the processing needs of different materials (such as powder agglomerates of different particle sizes), avoiding the production of unqualified materials caused by a single processing flow.

[0029] As an example, the three-way valve 7 is an electrically controlled valve, electrically connected to the control unit, and controlled by the control unit to switch the material flow direction. The electrically controlled three-way valve 7 replaces manual valve switching, shortening the response time to less than 0.5 seconds, and realizing automated control of material flow direction; through the program setting of the control unit, the flow direction can be automatically switched according to subsequent monitoring signals (such as particle detection, flow detection), reducing manual intervention and improving system operating efficiency and control accuracy.

[0030] As an example, a sight glass or flow monitoring sensor is installed on the circulation pipeline 8, and the sight glass or flow monitoring sensor is electrically connected to the control unit. The sight glass enables intuitive visual observation of the material circulation status, facilitating operators to judge the material uniformity in real time; the flow monitoring sensor can accurately collect material flow data in the circulation pipeline 8 (accuracy ±0.1L / min) and transmit the data to the control unit, providing data support for the control unit to regulate the flow direction of the three-way valve 7 and the rotation speed of the material conveying device 2, avoiding a decrease in processing effect caused by blockage of the circulation pipeline 8 or abnormal flow.

[0031] As an example, the operating pressure range of the high-pressure homogenizer 3 is 20MPa to 150MPa. This wide pressure range of 20MPa-150MPa is suitable for powder particles of different hardness in insulating sheet production; for example, soft powder particles are suitable for 20-50MPa, and hard powder particles are suitable for 100-150MPa. This solves the problems of fixed pressure and poor adaptability of traditional equipment. The pressure can be continuously adjusted according to the material characteristics, ensuring thorough particle crushing while avoiding excessive pressure that could lead to material deformation or equipment damage.

[0032] As an example, the heat exchange and cooling device 4 includes a chiller 9 and a shell-and-tube heat exchanger 10. The chiller 9 is connected to the shell-and-tube heat exchanger 10 through an inlet pipe 11 and an outlet pipe 12, forming a circulating heat exchange and cooling loop of chilled water-outlet pipe 12-shell-and-tube heat exchanger 10-inlet pipe 11-chiller 9. The material pipeline 6 passes through the inside of the shell-and-tube heat exchanger 10 and indirectly exchanges heat with the cooling water.

[0033] The shell-and-tube heat exchanger 10 has the advantages of large heat exchange area and high heat transfer efficiency (heat exchange efficiency can reach more than 90%). It can quickly cool materials that have been heated by pressure work after homogenization (usually by 10-20°C) to below 30°C, avoiding the degradation of material properties (such as insulation and thermal conductivity) caused by high temperature. The circulating heat exchange cooling loop realizes the reuse of cooling water, saving more than 60% of water compared with traditional open cooling.

[0034] As an example, the feeding device 1 is a closed feeding hopper with an openable and closable sealing cover at the top and a sealed connection between the bottom outlet and the material pipeline 6. The closed structure effectively prevents dust leakage during the feeding process, improves the working environment, and avoids operators inhaling dust; at the same time, it prevents external impurities (such as dust and fibers) from entering the material, ensuring the purity of the material and reducing the risk of abnormal insulation sheet performance caused by the introduction of impurities.

[0035] As an example, a control valve 13 is installed on the outlet pipe of the feeding device 1. The control valve 13 is an electrically controlled valve and is electrically connected to the control unit. The electrically controlled valve 13 can achieve precise adjustment of the feeding amount (adjustment accuracy ±1%) through the control unit, and coordinate with the conveying rhythm of the material conveying device 2 to avoid material accumulation and blockage in the pipeline due to excessive feeding, or system idling efficiency reduction due to excessive feeding; thus realizing automated matching of the feeding process and improving the stability of system operation.

[0036] As an example, the material conveying device 2 is a conveying pump, which is electrically connected to the control unit. The speed and output pressure of the conveying pump can be adjusted by the control unit (speed adjustment range 0-1500 r / min), which can stably convey materials to the homogenizer 3 according to the working pressure requirements of the high-pressure homogenizer 3, ensuring that the pressure fluctuation of the material at the homogenizer inlet does not exceed ±0.5MPa; thus avoiding the problem of uneven homogenization effect caused by unstable material supply in traditional gravity conveying methods.

[0037] As an example, the control unit includes a human-machine interface, such as a touchscreen, for setting and displaying the system's working pressure, material temperature, and flow rate parameters. The human-machine interface enables visual operation of parameter setting and status monitoring, allowing operators to quickly learn and use the system without specialized training. The real-time display of parameters such as working pressure, material temperature, and flow rate facilitates timely detection of system anomalies, such as sudden pressure increases or temperature exceeding limits, enabling intervention and reducing downtime.

[0038] As an example, the discharge device 5 is a discharge cylinder.

[0039] The working process of this embodiment is as follows: Open the sealed cover of the closed feeding hopper, put the material (including powder particles) for insulating sheet production into the feeding hopper, and close the sealed cover; start the system, the control unit sends a signal to open the control valve 13, and adjusts the conveying pump to run at the set flow rate, conveying the material from the feeding hopper to the high-pressure homogenizer 3; the high-pressure homogenizer 3 runs at the set pressure, and crushes the powder particles in the material to the qualified particle size through high-pressure shearing and impact; the homogenized material enters the shell-and-tube heat exchanger 10, and the chiller 9 delivers cooling water to the shell-and-tube heat exchanger 10 through the inlet pipe 11. After the cooling water indirectly exchanges heat with the material, it flows back to the chiller 9 through the outlet pipe 12 for recycling. The material flows out of the shell-and-tube heat exchanger 10 after being cooled to 25°C. Heat exchanger 10; cooled material flows into three-way valve 7. At this time, the control unit controls the three-way valve 7 to switch to the direction of circulation pipeline 8 by default. The material flows back to the inlet of the conveying pump through circulation pipeline 8. The flow monitoring sensor collects the material flow data in circulation pipeline 8 in real time and transmits it to the control unit to confirm that the circulation is normal. After the material is homogenized by two circulations, the particle size of the material is detected by an external particle detector (linked with the control unit). The control unit sends a signal to control the electric three-way valve 7 to switch to the direction of the discharge cylinder. The qualified material flows into the discharge cylinder for collection. After the material in the feeding hopper is processed, the control unit automatically closes the electric control valve 13, the conveying pump, the high-pressure homogenizer 3 and the chiller 9 to complete one processing cycle.

[0040] In a specific embodiment of this application, the system operating efficiency is 40% higher than that of the traditional three-roll mill, the processed material is free of blackening and discoloration, the particle defect rate is less than 0.5%, and the material temperature is stably controlled at 25±1℃, which fully meets the quality and efficiency requirements of insulating sheet production.

[0041] Compared with the prior art, this application has the following significant advantages:

[0042] Thorough particle processing without blackening: The particles are crushed by a high-pressure homogenizer 3 with adjustable pressure of 20-150MPa. With the help of a circulation loop design, the particle removal rate reaches more than 99%, and there is no blackening or discoloration problem caused by contact with grinding parts. The product yield rate is increased to more than 98%.

[0043] High degree of automation: The control unit integrates the control functions of various devices, realizes parameter setting and status monitoring through human-machine interface, and works with electronic valves, sensors and other components to realize full-process automation of feeding, conveying, homogenization, cooling and circulation, reducing labor costs by more than 50%;

[0044] Stable operation and strong adaptability: Wide pressure range, precise flow / temperature control and circulation monitoring design, adaptable to insulating sheet production materials with different characteristics, and the system has a continuous operation failure rate of less than 1%;

[0045] Energy saving and environmental protection: The circulating heat exchange cooling circuit saves cooling water consumption, and the closed feeding reduces material waste and environmental pollutant emissions, meeting the requirements of green production.

[0046] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0047] Finally, 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 terminal device 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 terminal device. 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 terminal device that includes said element.

[0048] The above provides a detailed description of a high-voltage homogenization system for processing insulating sheet particles provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A high pressure homogenization system for insulation sheet particle processing, characterized by, It includes a feeding device, a material conveying device, a high-pressure homogenizer, a heat exchange and cooling device, a discharge device, and a control unit; the feeding device, the material conveying device, the high-pressure homogenizer, the heat exchange and cooling device, and the discharge device are connected in sequence through material pipelines; The outlet pipe of the heat exchange and cooling device is connected to a three-way valve. One outlet of the three-way valve is connected to the discharge device, and the other outlet is connected to the inlet of the material conveying device through a circulation pipe, forming a material circulation loop. The control unit is electrically connected to the material conveying device, the high-pressure homogenizer, and the heat exchange and cooling device, respectively.

2. The high pressure homogenization system for insulation sheet particle processing of claim 1, wherein, The three-way valve is an electrically controlled valve, electrically connected to the control unit, and controlled by the control unit to switch the material flow direction.

3. The high pressure homogenization system for insulation sheet particle processing of claim 2, wherein, A sight glass or flow monitoring sensor is installed on the circulation pipeline, and the sight glass or the flow monitoring sensor is electrically connected to the control unit.

4. The high pressure homogenization system for insulation sheet particle processing of claim 1, wherein, The operating pressure range of the high-pressure homogenizer is 20MPa to 150MPa.

5. The high pressure homogenization system for insulation sheet particle processing of claim 1, wherein, The heat exchange and cooling device includes a chiller and a shell-and-tube heat exchanger. The chiller is connected to the shell-and-tube heat exchanger through an inlet pipe and an outlet pipe, respectively, to form a circulating heat exchange and cooling loop.

6. The high pressure homogenization system for insulation sheet particle processing of claim 3, wherein, The feeding device is a closed feeding hopper.

7. The high pressure homogenization system for insulation sheet particle processing of claim 6, wherein, A control valve is installed on the outlet pipe of the feeding device. The control valve is an electrically controlled valve and is electrically connected to the control unit.

8. The high pressure homogenization system for insulation sheet particle processing of claim 7, wherein, The material conveying device is a conveying pump, and the conveying pump is electrically connected to the control unit.

9. The high pressure homogenization system for insulation sheet particle processing of claim 8, wherein, The control unit includes a human-machine interface for setting and displaying the system's working pressure, material temperature, and flow rate parameters.

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