WO2021232646A1 - Pressure-adjustable experimental device for collisions of micron-sized particles and different surfaces - Google Patents

Pressure-adjustable experimental device for collisions of micron-sized particles and different surfaces Download PDF

Info

Publication number
WO2021232646A1
WO2021232646A1 PCT/CN2020/116669 CN2020116669W WO2021232646A1 WO 2021232646 A1 WO2021232646 A1 WO 2021232646A1 CN 2020116669 W CN2020116669 W CN 2020116669W WO 2021232646 A1 WO2021232646 A1 WO 2021232646A1
Authority
WO
WIPO (PCT)
Prior art keywords
particle
fixing frame
pressure
adjustable
experimental device
Prior art date
Application number
PCT/CN2020/116669
Other languages
French (fr)
Chinese (zh)
Inventor
东明
李雪
李素芬
尚妍
Original Assignee
大连理工大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大连理工大学 filed Critical 大连理工大学
Publication of WO2021232646A1 publication Critical patent/WO2021232646A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels

Definitions

  • the invention relates to an experimental device for the collision of pressure-adjustable micron particles with different surfaces, and belongs to the technical field of fine particle collision experiments.
  • Fine particles are important substances in the environment, which are widely present in nature and human activities. Fine particle engineering research is widely used in various fields such as food manufacturing, biopharmaceuticals, and building materials.
  • the main characteristics of fine particles that are different from coarse particles are the weakening of the gravity and inertial effects of the particles, and they are more susceptible to the influence of external factors during the flow process.
  • the interaction between particles and macroscopic objects, particles and particles, and particles and external physical fields are relatively enhanced.
  • the adhesion force derived from the van der Waals force between molecules has become the most basic factor leading to the characteristic physical processes and phenomena of fine particles (including adhesion, agglomeration and deposition, etc.).
  • the above introduces the influencing factors of fine particles in the flow and collision process, in order to eliminate the influence of external factors on the particle collision process, such as airflow, temperature, humidity, etc.
  • studying the mechanism of interaction between fine particles designing an experimental device that allows micron particles to collide with different surfaces under adjustable pressure conditions is a necessary experimental method for analyzing particle collision contact dynamics.
  • the present invention provides an experimental device with adjustable pressure and collision of micron-sized particles with different surfaces.
  • the experimental device should have a simple structure, which can realize the impact of micron-sized particles on different material platforms under vacuum conditions, so as to realize the experimental research on the impact of micron-sized particles with different surfaces under the condition of adjustable pressure and eliminating external influence factors.
  • the analysis of the force analysis and energy loss in the particle collision contact process provides effective support for theoretical calculations.
  • the technical scheme adopted by the present invention is: a pressure-adjustable experimental device for micron particles to collide with different surfaces, which includes a power supply and an adjustable pressure test chamber, and the adjustable pressure test chamber is connected to a variable frequency vacuum pump and a micro-pressure change through a pipeline.
  • the adjustable pressure test chamber adopts a transparent structure
  • the adjustable pressure test chamber is provided with an upper fixing frame and a lower fixing frame connected by a plurality of pillars
  • the fixed support of the frame, the upper fixed frame is provided with a supporting frame
  • the particle supply system includes a particle flow pipeline fixed on the upper fixed frame and provided with an electric ball valve and a particle injector arranged on the supporting frame and movable up and down, Place micro-particles and micro-vibration discs in the particle injector, and a detachable collision platform is provided at an appropriate distance from the lower exit of the particle flow pipeline; the center of the lower exit of the particle injector and the center of the particle flow pipeline collide with the detachable The center of the platform is on the same vertical line; the miniature vibrating film and the electric ball valve are electrically connected to the power supply; during the experiment, the miniature vibrating film in the particle injector is energized and vibrated, and the falling amount of the fine particles is adjusted
  • the particle flow pipeline adopts a nut located above the upper fixing frame and another nut located below the upper fixing frame to adjust the relative position of the particle flow pipeline and the upper fixing frame, and the supporting frame and the upper fixing frame are connected by threads.
  • the detachable collision platform is fixed by being embedded in a fixed base.
  • This kind of pressure-adjustable experimental device for micron particles colliding with different surfaces includes a power supply, an adjustable pressure test chamber, a particle supply system and a collision platform.
  • the adjustable pressure test chamber adopts a transparent structure, and the particle supply system is set on the upper fixed frame.
  • the collision platform is set on the lower fixed frame through the fixed base.
  • the particle supply system consists of a particle injector with a built-in micro-vibration sheet, an electric ball valve and a particle flow pipeline feeder.
  • the experimental device has a simple structure and can realize the impact of micron-sized particles on different material platforms under different pressure conditions, so as to realize the experimental research work on the impact of micron-sized particles with different surfaces under the condition of vacuum and eliminating external influence factors, which can be effectively analyzed
  • the force analysis and energy loss in the particle collision contact process provide effective support for theoretical calculations.
  • Figure 1 is a schematic diagram of an experimental device for pressure-adjustable micron particles to collide with different surfaces.
  • Fig. 2 is an enlarged view of A in Fig. 1.
  • Fig. 3 is an enlarged view of B in Fig. 1.
  • Micro differential pressure transmitter In the picture: 1. Micro differential pressure transmitter, 2. Support frame, 3. Particle injector, 4. Mini vibrating plate, 5. Particle inlet device, 6. Electric ball valve, 7. Particle flow pipeline, 8. Fixed bracket , 8a, upper fixing frame, 8b, pillar, 8c, lower fixing frame, 8d, fixed base, 9, rubber plug, 10, power supply, 11, adjustable pressure test chamber, 12, variable frequency vacuum pump, 13, detachable collision platform .
  • Figures 1, 2, and 3 show the structure diagram of an experimental device for pressure-adjustable micron particles colliding with different surfaces.
  • the experimental device includes a power supply 10, an adjustable pressure test chamber 11, and a particle supply system.
  • the adjustable pressure test chamber 11 is connected to a variable frequency vacuum pump 12 and a micro pressure difference transmitter 1 through a pipeline.
  • the adjustable pressure test chamber 11 adopts a transparent structure.
  • the adjustable pressure test chamber 11 is provided with a fixing bracket 8 that uses four pillars 8b to connect the upper fixing frame 8a and the lower fixing frame 8c, and the upper fixing frame 8a is provided with a supporting frame 2 .
  • the particle supply system includes a particle flow pipe 7 fixed on the upper fixed frame 8a and provided with a particle inlet device 5, an electric ball valve 6, and a particle injector 3 arranged on the support frame 2 and movable up and down, which is placed in the particle injector 3.
  • the micro particles and the micro vibrating plate 4 are provided with a detachable collision platform 13 at an appropriate distance from the outlet of the lower end of the particle flow pipeline 7.
  • the particle flow pipeline 7 uses one nut located above the upper fixing frame 8a, and the other nut is located below the upper fixing frame 8a to adjust the relative position of the particle flow pipeline 7 and the upper fixing frame 8a.
  • the supporting frame 2 and the upper fixing frame 8a adopt threads. connect.
  • the center of the lower end of the particle injector 3, the center of the particle flow pipe 7 and the center of the detachable collision platform 13 are on the same vertical line.
  • the miniature vibrating plate 4 and the electric ball valve 6 are electrically connected to the power supply 10 by wires passing through the rubber plug 9.
  • the detachable collision platform 13 is fixed by being embedded in a fixed base 8d, and the fixed base 8d is fixedly connected to the lower fixing frame 8c.
  • the micro-vibration sheet 4 in the particle injector 3 is energized and vibrated, and the falling amount of the micro-particles is adjusted by adjusting the opening degree of the electric ball valve 6, and the fallen micro-particles collide with the upper surface of the detachable collision platform 13.
  • the particle flow pipeline 7 uses one nut located above the upper fixing frame 8a, and the other nut is located below the upper fixing frame 8a to adjust the relative position of the particle flow pipeline 7 and the upper fixing frame 8a.
  • the supporting frame 2 and the upper fixing frame 8a adopt threads. connect.
  • the vacuum experiment chamber is made of 5mm thick plexiglass; the fixed bracket of the experiment table is made of stainless steel, which is used to support the particle supply system; the variable frequency vacuum pump and the micro pressure difference transmitter are used to adjust and control the pressure of the vacuum chamber, and the frequency conversion
  • the ultimate vacuum drawn by the vacuum pump is 20pa.
  • the invention provides an experimental device with adjustable pressure and collision of micron particles with different surfaces.
  • the experimental device should have a simple structure, which can realize the impact of micron-sized particles on different material platforms under vacuum conditions, so as to realize the experimental research on the impact of micron-sized particles with different surfaces under the condition of adjustable pressure and eliminating external influence factors.
  • the analysis of the force analysis and energy loss in the particle collision contact process provides effective support for theoretical calculations.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

A pressure-adjustable experimental device for collisions of micron-sized particles and different surfaces, belonging to the technical field of fine particle collision experiments. The experimental device comprises a power supply (10), an adjustable pressure experimental chamber (11), a particle supply system and a detachable collision platform (13), wherein the adjustable pressure experimental chamber (11) uses a transparent structure, the particle supply system is arranged on an upper fixing frame (8a), and the detachable collision platform (13) is arranged on a lower fixing frame (8c) by means of a fixed base (8d); and the particle supply system comprises a particle injector (3) with a built-in micro vibration plate (4), an electric ball valve (6) and a particle flow pipeline (7) which are sequentially connected. The experimental device is simple in structure, and can achieve the collision of micron-sized particles with platforms made of different materials under different pressure conditions, thereby achieving experimental research work on collisions of micron-sized particles and different surfaces under the conditions of a vacuum and the elimination of external influence factors, effectively analyzing stress analysis and energy loss conditions in the particle collision contact process, and providing effective support for theoretical calculation.

Description

一种压力可调微米级颗粒与不同表面碰撞的实验装置Experimental device for pressure-adjustable micron particles to collide with different surfaces 技术领域Technical field
本发明涉及一种压力可调微米级颗粒与不同表面碰撞的实验装置，属于细颗粒碰撞实验技术领域。The invention relates to an experimental device for the collision of pressure-adjustable micron particles with different surfaces, and belongs to the technical field of fine particle collision experiments.
背景技术Background technique
细颗粒是环境中的重要物质，广泛存在于自然界和人类活动之中。细颗粒工程研究广泛应用于食品制造、生物制药、建筑材料等各个领域。细颗粒区别于粗大颗粒的主要特征在于颗粒重力和惯性效应的减弱，流动过程中更容易受到外界因素的影响，颗粒-宏观物体、颗粒-颗粒间以及颗粒-外界物理场间作用的相对增强，源于分子间范德华力的粘附力以其固有性成为了导致细颗粒特征物理过程和现象（包括粘附、团聚和沉积等）的最基础因素。Fine particles are important substances in the environment, which are widely present in nature and human activities. Fine particle engineering research is widely used in various fields such as food manufacturing, biopharmaceuticals, and building materials. The main characteristics of fine particles that are different from coarse particles are the weakening of the gravity and inertial effects of the particles, and they are more susceptible to the influence of external factors during the flow process. The interaction between particles and macroscopic objects, particles and particles, and particles and external physical fields are relatively enhanced. The adhesion force derived from the van der Waals force between molecules has become the most basic factor leading to the characteristic physical processes and phenomena of fine particles (including adhesion, agglomeration and deposition, etc.).
技术问题technical problem
上面介绍了细颗粒在流动及碰撞过程中的影响因素，为消除外界因素对颗粒碰撞过程的影响，如气流、温度、湿度等对碰撞过程的影响，揭示碰撞接触过程的物理本质，从表征微颗粒间相互作用的力-位移关系式出发，研究细颗粒间相互作用机理，设计压力可调节条件下微米级颗粒与不同表面碰撞的实验装置是分析颗粒碰撞接触动力学必须的实验手段。The above introduces the influencing factors of fine particles in the flow and collision process, in order to eliminate the influence of external factors on the particle collision process, such as airflow, temperature, humidity, etc. Starting from the force-displacement relationship of particle interaction, studying the mechanism of interaction between fine particles, designing an experimental device that allows micron particles to collide with different surfaces under adjustable pressure conditions is a necessary experimental method for analyzing particle collision contact dynamics.
技术解决方案Technical solutions
针对现有技术中存在的问题，本发明提供压力可调、微米级颗粒与不同表面碰撞的实验装置。该实验装置应结构简单，可实现微米级颗粒在真空条件下撞击不同材质平台，从而实现在压力可调、消除外界影响因素情况下，进行微米级颗粒与不同表面撞击的实验研究工作，可有效的分析颗粒碰撞接触过程的受力分析及能量损失情况，为理论计算提供有效的支撑。Aiming at the problems in the prior art, the present invention provides an experimental device with adjustable pressure and collision of micron-sized particles with different surfaces. The experimental device should have a simple structure, which can realize the impact of micron-sized particles on different material platforms under vacuum conditions, so as to realize the experimental research on the impact of micron-sized particles with different surfaces under the condition of adjustable pressure and eliminating external influence factors. The analysis of the force analysis and energy loss in the particle collision contact process provides effective support for theoretical calculations.
本发明采用的技术方案是：一种压力可调微米级颗粒与不同表面碰撞的实验装置，它包括电源和可调节压力实验舱，可调节压力实验舱内通过管道连接变频真空泵和微压差变送器，它还包括设置在可调节压力实验舱中的颗粒供给系统，所述可调节压力实验舱采用透明结构，可调节压力实验舱内设有一个采用多个支柱连接上固定架和下固定架的固定支架，上固定架上设有支撑架；所述颗粒供给系统包含固定在上固定架上并设有电动球阀的颗粒流动管路和设置在支撑架上并上下可移动的颗粒注射器，在颗粒注射器中放置微颗粒和微型震动片，在颗粒流动管路的下端出口适当距离处设有可拆卸碰撞平台；所述颗粒注射器的下端出口的中心、颗粒流动管路的中心与可拆卸碰撞平台的中心在同一垂直线上；所述微型震动片、电动球阀与电源电连接；在实验时，在颗粒注射器中的微型震动片通电震动，通过调节电动球阀开度调节微颗粒的下落量，下落的微颗粒与可拆卸碰撞平台的上表面发生碰撞。The technical scheme adopted by the present invention is: a pressure-adjustable experimental device for micron particles to collide with different surfaces, which includes a power supply and an adjustable pressure test chamber, and the adjustable pressure test chamber is connected to a variable frequency vacuum pump and a micro-pressure change through a pipeline. It also includes a particle supply system arranged in an adjustable pressure test chamber, the adjustable pressure test chamber adopts a transparent structure, and the adjustable pressure test chamber is provided with an upper fixing frame and a lower fixing frame connected by a plurality of pillars The fixed support of the frame, the upper fixed frame is provided with a supporting frame; the particle supply system includes a particle flow pipeline fixed on the upper fixed frame and provided with an electric ball valve and a particle injector arranged on the supporting frame and movable up and down, Place micro-particles and micro-vibration discs in the particle injector, and a detachable collision platform is provided at an appropriate distance from the lower exit of the particle flow pipeline; the center of the lower exit of the particle injector and the center of the particle flow pipeline collide with the detachable The center of the platform is on the same vertical line; the miniature vibrating film and the electric ball valve are electrically connected to the power supply; during the experiment, the miniature vibrating film in the particle injector is energized and vibrated, and the falling amount of the fine particles is adjusted by adjusting the opening of the electric ball valve, The falling micro particles collide with the upper surface of the detachable collision platform.
所述颗粒流动管路釆用一个螺母位于上固定架上方、另一个螺母位于上固定架下方调节颗粒流动管路与上固定架的相对位置，所述支撑架与上固定架采用螺纹连接。The particle flow pipeline adopts a nut located above the upper fixing frame and another nut located below the upper fixing frame to adjust the relative position of the particle flow pipeline and the upper fixing frame, and the supporting frame and the upper fixing frame are connected by threads.
所述可拆卸碰撞平台采用嵌入固定底座中进行固定。The detachable collision platform is fixed by being embedded in a fixed base.
有益效果Beneficial effect
这种压力可调、微米级颗粒与不同表面碰撞的实验装置包括电源、可调节压力实验舱、颗粒供给系统和碰撞平台，可调节压力实验舱采用透明结构，颗粒供给系统设置在上固定架上，碰撞平台通过固定底座设置在下固定架上。颗粒供给系统包含依次连接内置微型震动片的颗粒注射器、电动球阀和颗粒流动管路给料器。该实验装置结构简单，可实现微米级颗粒在不同压力条件下撞击不同材质平台，从而实现在真空、消除外界影响因素情况下，进行微米级颗粒与不同表面撞击的实验研究工作，可有效的分析颗粒碰撞接触过程的受力分析及能量损失情况，为理论计算提供有效的支撑。This kind of pressure-adjustable experimental device for micron particles colliding with different surfaces includes a power supply, an adjustable pressure test chamber, a particle supply system and a collision platform. The adjustable pressure test chamber adopts a transparent structure, and the particle supply system is set on the upper fixed frame. , The collision platform is set on the lower fixed frame through the fixed base. The particle supply system consists of a particle injector with a built-in micro-vibration sheet, an electric ball valve and a particle flow pipeline feeder. The experimental device has a simple structure and can realize the impact of micron-sized particles on different material platforms under different pressure conditions, so as to realize the experimental research work on the impact of micron-sized particles with different surfaces under the condition of vacuum and eliminating external influence factors, which can be effectively analyzed The force analysis and energy loss in the particle collision contact process provide effective support for theoretical calculations.
附图说明Description of the drawings
图1是一种压力可调微米级颗粒与不同表面碰撞的实验装置的结构示意图。Figure 1 is a schematic diagram of an experimental device for pressure-adjustable micron particles to collide with different surfaces.
图2是图1中的A放大图。Fig. 2 is an enlarged view of A in Fig. 1.
图3是图1中的B放大图。Fig. 3 is an enlarged view of B in Fig. 1.
图中：1、微压差变送器，2、支撑架，3、颗粒注射器，4、微型震动片，5、颗粒入口装置，6、电动球阀，7、颗粒流动管路，8、固定支架，8a、上固定架，8b、支柱，8c、下固定架，8d、固定底座，9、橡胶塞，10、电源，11、可调节压力实验舱，12、变频真空泵，13、可拆卸碰撞平台。In the picture: 1. Micro differential pressure transmitter, 2. Support frame, 3. Particle injector, 4. Mini vibrating plate, 5. Particle inlet device, 6. Electric ball valve, 7. Particle flow pipeline, 8. Fixed bracket , 8a, upper fixing frame, 8b, pillar, 8c, lower fixing frame, 8d, fixed base, 9, rubber plug, 10, power supply, 11, adjustable pressure test chamber, 12, variable frequency vacuum pump, 13, detachable collision platform .
本发明的最佳实施方式The best mode of the present invention
图1、2、3示出了一种压力可调微米级颗粒与不同表面碰撞的实验装置结构图。图中，该实验装置包括电源10、可调节压力实验舱11和颗粒供给系统，可调节压力实验舱11内通过管道连接变频真空泵12和微压差变送器1。Figures 1, 2, and 3 show the structure diagram of an experimental device for pressure-adjustable micron particles colliding with different surfaces. In the figure, the experimental device includes a power supply 10, an adjustable pressure test chamber 11, and a particle supply system. The adjustable pressure test chamber 11 is connected to a variable frequency vacuum pump 12 and a micro pressure difference transmitter 1 through a pipeline.
可调节压力实验舱11采用透明结构，可调节压力实验舱11内设有一个采用四个支柱8b连接上固定架8a和下固定架8c的固定支架8，上固定架8a上设有支撑架2。The adjustable pressure test chamber 11 adopts a transparent structure. The adjustable pressure test chamber 11 is provided with a fixing bracket 8 that uses four pillars 8b to connect the upper fixing frame 8a and the lower fixing frame 8c, and the upper fixing frame 8a is provided with a supporting frame 2 .
颗粒供给系统包含固定在上固定架8a上并设有颗粒入口装置5、电动球阀6的颗粒流动管路7和设置在支撑架2上并上下可移动的颗粒注射器3，在颗粒注射器3中放置微颗粒和微型震动片4，在颗粒流动管路7的下端出口适当距离处设有可拆卸碰撞平台13。颗粒流动管路7釆用一个螺母位于上固定架8a上方、另一个螺母位于上固定架8a下方调节颗粒流动管路7与上固定架8a的相对位置，支撑架2与上固定架8a采用螺纹连接。The particle supply system includes a particle flow pipe 7 fixed on the upper fixed frame 8a and provided with a particle inlet device 5, an electric ball valve 6, and a particle injector 3 arranged on the support frame 2 and movable up and down, which is placed in the particle injector 3. The micro particles and the micro vibrating plate 4 are provided with a detachable collision platform 13 at an appropriate distance from the outlet of the lower end of the particle flow pipeline 7. The particle flow pipeline 7 uses one nut located above the upper fixing frame 8a, and the other nut is located below the upper fixing frame 8a to adjust the relative position of the particle flow pipeline 7 and the upper fixing frame 8a. The supporting frame 2 and the upper fixing frame 8a adopt threads. connect.
颗粒注射器3的下端出口的中心、颗粒流动管路7的中心与可拆卸碰撞平台13的中心在同一垂直线上。微型震动片4、电动球阀6用穿过橡胶塞9的导线与电源10电连接。可拆卸碰撞平台13采用嵌入固定底座8d中进行固定，固定底座8d与下固定架8c固定连接。The center of the lower end of the particle injector 3, the center of the particle flow pipe 7 and the center of the detachable collision platform 13 are on the same vertical line. The miniature vibrating plate 4 and the electric ball valve 6 are electrically connected to the power supply 10 by wires passing through the rubber plug 9. The detachable collision platform 13 is fixed by being embedded in a fixed base 8d, and the fixed base 8d is fixedly connected to the lower fixing frame 8c.
在实验时，在颗粒注射器3中的微型震动片4通电震动，通过调节电动球阀6开度调节微颗粒的下落量，下落的微颗粒与可拆卸碰撞平台13的上表面发生碰撞。During the experiment, the micro-vibration sheet 4 in the particle injector 3 is energized and vibrated, and the falling amount of the micro-particles is adjusted by adjusting the opening degree of the electric ball valve 6, and the fallen micro-particles collide with the upper surface of the detachable collision platform 13.
颗粒流动管路7釆用一个螺母位于上固定架8a上方、另一个螺母位于上固定架8a下方调节颗粒流动管路7与上固定架8a的相对位置，支撑架2与上固定架8a采用螺纹连接。The particle flow pipeline 7 uses one nut located above the upper fixing frame 8a, and the other nut is located below the upper fixing frame 8a to adjust the relative position of the particle flow pipeline 7 and the upper fixing frame 8a. The supporting frame 2 and the upper fixing frame 8a adopt threads. connect.
采用上述的技术方案，通过调节支撑架上固定夹的高低，改变颗粒注射器的高度，可获得微米级颗粒的不同入射速度；电动球阀的口径为5mm，通过开关控制微米级颗粒的入射数量。真空实验舱用5mm厚的有机玻璃制成的长方体；实验台固定支架使用不锈钢制成，用于支撑颗粒供给系统；变频真空泵和微压差变送器用于调节并控制真空实验舱的压力，变频真空泵抽取的极限真空是20pa。Using the above technical solution, by adjusting the height of the fixing clip on the support frame and changing the height of the particle injector, different incident speeds of micron particles can be obtained; the diameter of the electric ball valve is 5mm, and the number of incident micron particles is controlled by a switch. The vacuum experiment chamber is made of 5mm thick plexiglass; the fixed bracket of the experiment table is made of stainless steel, which is used to support the particle supply system; the variable frequency vacuum pump and the micro pressure difference transmitter are used to adjust and control the pressure of the vacuum chamber, and the frequency conversion The ultimate vacuum drawn by the vacuum pump is 20pa.
本发明的实施方式Embodiments of the present invention
同最佳实施方式。Same as the best implementation.
工业实用性Industrial applicability
本发明提供压力可调、微米级颗粒与不同表面碰撞的实验装置。该实验装置应结构简单，可实现微米级颗粒在真空条件下撞击不同材质平台，从而实现在压力可调、消除外界影响因素情况下，进行微米级颗粒与不同表面撞击的实验研究工作，可有效的分析颗粒碰撞接触过程的受力分析及能量损失情况，为理论计算提供有效的支撑。The invention provides an experimental device with adjustable pressure and collision of micron particles with different surfaces. The experimental device should have a simple structure, which can realize the impact of micron-sized particles on different material platforms under vacuum conditions, so as to realize the experimental research on the impact of micron-sized particles with different surfaces under the condition of adjustable pressure and eliminating external influence factors. The analysis of the force analysis and energy loss in the particle collision contact process provides effective support for theoretical calculations.
序列表自由内容Sequence Listing Free Content
无。without.

Claims (3)

  1. 一种压力可调微米级颗粒与不同表面碰撞的实验装置，它包括电源（10）和可调节压力实验舱（11），可调节压力实验舱（11）内通过管道连接变频真空泵（12）和微压差变送器（1），其特征是：它还包括设置在可调节压力实验舱（11）中的颗粒供给系统，所述可调节压力实验舱（11）采用透明结构，可调节压力实验舱（11）内设有一个采用多个支柱（8b）连接上固定架（8a）和下固定架（8c）的固定支架（8），上固定架（8a）上设有支撑架（2）；所述颗粒供给系统包含固定在上固定架（8a）上并设有电动球阀（6）的颗粒流动管路（7）和设置在支撑架（2）上并上下可移动的颗粒注射器（3），在颗粒注射器（3）中放置微颗粒和微型震动片（4），在颗粒流动管路（7）的下端出口适当距离处设有可拆卸碰撞平台（13）；所述颗粒注射器（3）的下端出口的中心、颗粒流动管路（7）的中心与可拆卸碰撞平台（13）的中心在同一垂直线上；所述微型震动片（4）、电动球阀（6）与电源（10）电连接；在实验时，在颗粒注射器（3）中的微型震动片（4）通电震动，通过调节电动球阀（6）开度调节微颗粒的下落量，下落的微颗粒与可拆卸碰撞平台（13）的上表面发生碰撞。An experimental device for pressure-adjustable micron particles to collide with different surfaces. It includes a power source (10) and an adjustable pressure test chamber (11). The adjustable pressure test chamber (11) is connected to a variable frequency vacuum pump (12) and The micro-pressure transmitter (1) is characterized in that it also includes a particle supply system arranged in an adjustable pressure test chamber (11), which adopts a transparent structure and can adjust the pressure The experiment cabin (11) is provided with a fixing bracket (8) that uses multiple pillars (8b) to connect the upper fixing frame (8a) and the lower fixing frame (8c), and the upper fixing frame (8a) is provided with a supporting frame (2). ); The particle supply system includes a particle flow pipeline (7) fixed on the upper fixed frame (8a) and equipped with an electric ball valve (6) and a particle injector (7) arranged on the support frame (2) and movable up and down ( 3) Place micro-particles and micro-vibration discs (4) in the particle injector (3), and a detachable collision platform (13) is provided at an appropriate distance from the outlet of the lower end of the particle flow pipeline (7); the particle injector ( 3) The center of the lower end outlet, the center of the particle flow pipeline (7) and the center of the detachable collision platform (13) are on the same vertical line; the miniature vibrating plate (4), the electric ball valve (6) and the power supply ( 10) Electrical connection; during the experiment, the micro-vibration sheet (4) in the particle injector (3) is energized and vibrated, and the amount of falling particles is adjusted by adjusting the opening of the electric ball valve (6), and the falling particles collide with the detachable The upper surface of the platform (13) collided.
  2. 根据权利要求1所述的一种压力可调微米级颗粒与不同表面碰撞的实验装置，其特征是：所述颗粒流动管路（7）釆用一个螺母位于上固定架（8a）上方、另一个螺母位于上固定架（8a）下方调节颗粒流动管路（7）与上固定架（8a）的相对位置，所述支撑架（2）与上固定架（8a）采用螺纹连接。An experimental device for pressure-adjustable micron particles colliding with different surfaces according to claim 1, characterized in that: the particle flow pipeline (7) is located above the upper fixing frame (8a) with a nut, and the other A nut is located below the upper fixing frame (8a) to adjust the relative position of the particle flow pipeline (7) and the upper fixing frame (8a), and the supporting frame (2) and the upper fixing frame (8a) are connected by threads.
  3. 根据权利要求1所述的一种压力可调微米级颗粒与不同表面碰撞的实验装置，其特征是：所述可拆卸碰撞平台（13）采用嵌入固定底座（8d）中进行固定。The experimental device for pressure-adjustable micron particles colliding with different surfaces according to claim 1, characterized in that: the detachable collision platform (13) is fixed by being embedded in a fixed base (8d).
PCT/CN2020/116669 2020-05-16 2020-09-22 Pressure-adjustable experimental device for collisions of micron-sized particles and different surfaces WO2021232646A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010415463.X 2020-05-16
CN202010415463.XA CN111579208A (en) 2020-05-16 2020-05-16 Experimental device for pressure-adjustable micron-sized particles collide with different surfaces

Publications (1)

Publication Number Publication Date
WO2021232646A1 true WO2021232646A1 (en) 2021-11-25

Family

ID=72118868

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/116669 WO2021232646A1 (en) 2020-05-16 2020-09-22 Pressure-adjustable experimental device for collisions of micron-sized particles and different surfaces

Country Status (2)

Country Link
CN (1) CN111579208A (en)
WO (1) WO2021232646A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111579208A (en) * 2020-05-16 2020-08-25 大连理工大学 Experimental device for pressure-adjustable micron-sized particles collide with different surfaces
CN113218788A (en) * 2021-04-29 2021-08-06 安徽理工大学 Multi-particle impact crushing experiment platform
CN114486596A (en) * 2022-01-13 2022-05-13 中国科学院力学研究所 Electromagnetic drive-based multidirectional high-speed small particle emitting device
CN114397231B (en) * 2022-01-21 2024-04-16 中国矿业大学 Visual test device and method for adhesion and desorption of wet particles in gas-solid two-phase flow

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014106132A (en) * 2012-11-28 2014-06-09 Shimadzu Corp Fine particle analysis system, sample preparation device, and sample preparation jig
CN203944365U (en) * 2014-07-07 2014-11-19 清华大学 A kind of collision depolymerization formula particle generating means
CN106226031A (en) * 2016-09-11 2016-12-14 浙江理工大学 The experimental provision of particle-wall collision experiment in resisting medium
CN107121264A (en) * 2017-06-20 2017-09-01 大连理工大学 Experimental system and experimental method that a kind of controllable micron particles of humiture are collided with different surfaces
CN108318387A (en) * 2018-01-13 2018-07-24 大连理工大学 A kind of experimental provision of micron particles under vacuum and different surfaces collision
CN108732376A (en) * 2018-05-21 2018-11-02 江苏大学 A kind of nano-micrometre grade solids uniform broadcasting device with heating, drying function
CN111579208A (en) * 2020-05-16 2020-08-25 大连理工大学 Experimental device for pressure-adjustable micron-sized particles collide with different surfaces

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100571895C (en) * 2006-09-30 2009-12-23 西北工业大学 Controlled to the powder device
CN207357122U (en) * 2017-09-19 2018-05-15 中国人民解放军军事科学院军事医学研究院微生物流行病研究所 Micro dust aerosol generator
CN108225987A (en) * 2017-12-27 2018-06-29 天津科技大学 Solve the System and method for that micron order drop hits spherical surface freezing coating

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014106132A (en) * 2012-11-28 2014-06-09 Shimadzu Corp Fine particle analysis system, sample preparation device, and sample preparation jig
CN203944365U (en) * 2014-07-07 2014-11-19 清华大学 A kind of collision depolymerization formula particle generating means
CN106226031A (en) * 2016-09-11 2016-12-14 浙江理工大学 The experimental provision of particle-wall collision experiment in resisting medium
CN107121264A (en) * 2017-06-20 2017-09-01 大连理工大学 Experimental system and experimental method that a kind of controllable micron particles of humiture are collided with different surfaces
CN108318387A (en) * 2018-01-13 2018-07-24 大连理工大学 A kind of experimental provision of micron particles under vacuum and different surfaces collision
CN108732376A (en) * 2018-05-21 2018-11-02 江苏大学 A kind of nano-micrometre grade solids uniform broadcasting device with heating, drying function
CN111579208A (en) * 2020-05-16 2020-08-25 大连理工大学 Experimental device for pressure-adjustable micron-sized particles collide with different surfaces

Also Published As

Publication number Publication date
CN111579208A (en) 2020-08-25

Similar Documents

Publication Publication Date Title
WO2021232646A1 (en) Pressure-adjustable experimental device for collisions of micron-sized particles and different surfaces
US6458296B1 (en) Method and device for capsulating microbial, plant and animal cells or biological and chemical substances
EA200401460A1 (en) PREPARATION OF SPHERICAL PARTICLES FROM POLYMER MELT
CN108318387A (en) A kind of experimental provision of micron particles under vacuum and different surfaces collision
CN113275223B (en) Preparation method of high-adhesion super-hydrophobic surface based on laser chemical composite process
CN1894524A (en) High-flow microvalve
US11794126B2 (en) System, apparatuses, devices, and methods for producing particles
CN208832950U (en) Plastic grain heated-air drying equipment
CN103219271B (en) Attract clamper and shifting apparatus
CN111905509A (en) Dust removal device for decorative material production and treatment method thereof
Borgatti et al. Dielectrophoresis-based ‘Lab-on-a-chip’devices for programmable binding of microspheres to target cells
CN210111879U (en) Composite nano motor and preparation device thereof
Taniguchi et al. Preparation of glycopolymer hollow particles by sacrificial dissolution of colloidal templates
CN112551875B (en) Air inlet system of toughened glass production line
CN105093578B (en) Light blockage coating device
CN110553951A (en) Particle impact and observation device and method
CN112480459B (en) Groove-shaped super-hydrophobic truncated cone array surface for realizing liquid drop resilience
CN209816275U (en) High-temperature reaction furnace
CN107537170A (en) A kind of anti-sticking wall spray drying device of gradual change type hot blast
CN113145290A (en) Method for accelerating material cleaning by strong magnet particles and application thereof
CN207203502U (en) A kind of anti-sticking wall spray drying device of gradual change type hot blast
CN108133901A (en) A kind of novel device of the preparation with anti-PID effects cell piece
JPH09276634A (en) Gravitational sedimentation-type dust collector
RU2326317C1 (en) Dryer with rectangular cross section unit
CN114522872B (en) Surface mount type particle screening device and method for carrying out mode switching based on piezoelectric drive

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20936886

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20936886

Country of ref document: EP

Kind code of ref document: A1