Device for preparing nanoparticles

Abstract

The invention relates to a device for preparing nanoparticles. The device comprises a protection cabinet, a sample pool, a laser and an external light path assembly. The protection cabinet comprises a cabinet main body as well as a sealing chamber and a sample chamber which are arranged in the cabinet main body, and the sealing chamber and the sample chamber are distributed at an interval; the sample pool is arranged in the sample chamber and is used for arranging a liquid-phase medium and a target material; the laser is arranged in the sealed cavity and is used for emitting laser; the external light path assembly comprises a light guide part, a light transmitting sheet and a focusing part, the light guide part is arranged in the sealing cavity and located on one side of the laser, the light transmitting sheet is arranged between the sealing cavity and the sample cavity, and the focusing part is arranged in the sample cavity and located above the sample pool; and laser emitted by the laser device can sequentially pass through the light guide part, the light transmitting sheet and the focusing part and irradiate into the sample cell. The device for preparing the nanoparticles can protect a laser and an optical element, and the reliability of the device is improved.

Description

Technical Field

[0001] This application relates to the field of nanomaterial preparation, and particularly to a device for preparing nanoparticles. Background Art

[0002] In recent years, nanoparticles have been widely used in fields such as catalysis, biological labeling, optoelectronics, information storage, and surface-enhanced Raman scattering. Some nanoparticles are prepared by liquid-phase laser technology, which is divided into two categories: liquid-phase laser ablation technology (Laser ablation in liquids, LAL) and liquid-phase laser irradiation technology (Laser irradiation in liquids, LIL). Among them, the liquid-phase laser ablation technology refers to: using a pulsed laser beam with a high power density to focus and irradiate a solid target immersed in a liquid medium, and through the interaction between the laser beam and the solid target in the liquid medium, causing local melting, evaporation, or ablation of the target surface, and converting the material into nanoscale particles. The laser ablation process is usually carried out in a liquid medium environment. The laser beam generates plasma, bubbles, and local heating phenomena by exciting the target, resulting in the conversion of the material on the target surface into fine particles and finally dispersing in the liquid medium. This technology is widely used in the preparation of nanomaterials, surface modification, particle growth control, etc. due to its advantages of high precision, environmental friendliness, and operation under normal temperature and pressure. The liquid-phase laser irradiation technology refers to: using a high-energy laser beam to interact with the dispersed powder material or the liquid medium itself in the liquid medium, and through the radiation energy of the laser to trigger physical, chemical, or structural changes of the material. By precisely controlling the parameters of the laser (such as wavelength, pulse width, power density, etc.), the laser irradiation technology can efficiently transfer energy and is widely used in material surface modification, functional regulation, nanomaterial preparation, etc. The advantages of laser irradiation are its high precision, low pollution, and high energy utilization rate, making it an important tool in modern materials science and engineering technology.

[0003] Generally, after a laser generates laser light, the laser light is guided to a sample cell containing a liquid medium through an external optical path component. However, in the preparation process of nanoparticles in some related technologies, the generated particles, dust, or the liquid medium itself will adhere to the optical elements inside the laser or the optical elements of the external optical path component, thereby damaging the laser and the external optical path component, resulting in low reliability in the preparation of nanoparticles. Summary of the Invention

[0004] Based on this, it is necessary to provide a device for preparing nanoparticles that can protect the laser and optical elements and reduce the risk of device damage for the above problems.

[0005] Provide a device for preparing nanoparticles, including:

[0006] A protective cabinet, comprising a cabinet main body, as well as a sealed chamber and a sample chamber both arranged inside the cabinet main body, the sealed chamber and the sample chamber being spaced apart;

[0007] A sample cell, the sample cell being arranged in the sample chamber, and the sample cell being used for arranging a liquid medium and a target;

[0008] A laser, the laser being arranged in the sealed chamber, and the laser being used for emitting laser;

[0009] An external optical path component, the external optical path component comprising a light guiding component, a light transmissive sheet and a focusing component, the light guiding component being arranged in the sealed chamber and on one side of the laser, the light transmissive sheet being arranged between the sealed chamber and the sample chamber, the focusing component being arranged in the sample chamber and above the sample cell, and the laser emitted laser can sequentially pass through the light guiding component, the light transmissive sheet and the focusing component and irradiate into the sample cell.

[0010] In one embodiment, it further comprises a power supply component, the power supply component being electrically connected to the laser, the protective cabinet further comprises a power supply chamber arranged inside the cabinet main body, the power supply component being arranged in the power supply chamber, and heat dissipation holes being arranged on the side wall of the power supply chamber, the heat dissipation holes communicating the power supply chamber and the outside of the cabinet main body.

[0011] In one embodiment, it further comprises an electrical control component electrically connected to the power supply component and the laser respectively, the protective cabinet further comprises an electrical control chamber arranged inside the cabinet main body, and the electrical control component is arranged in the electrical control chamber.

[0012] In one embodiment, it further comprises a first exhaust fan, an air outlet being arranged on the side wall of the electrical control chamber, the air outlet communicating the electrical control chamber and the outside of the cabinet main body, and the first exhaust fan being arranged at the air outlet.

[0013] In one embodiment, it further comprises a second exhaust fan, the protective cabinet further comprises a first partition board, the electrical control chamber and the sample chamber being spaced apart along the horizontal direction, and the first partition board being blocked between the electrical control chamber and the sample chamber, the first partition board being provided with a ventilation opening communicating the sample chamber and the electrical control chamber, an air outlet being arranged on the side wall of the electrical control chamber opposite to the first partition board, and the air outlet being opposite to the ventilation opening, and the second exhaust fan being arranged at the ventilation opening.

[0014] In one embodiment, a maintenance opening is provided on the side wall of the electric control chamber. The protective cabinet further includes a maintenance board for covering the maintenance opening, and the maintenance board is detachably connected to the side wall of the electric control chamber.

[0015] In one embodiment, the power supply chamber, the sealing chamber and the sample chamber are respectively arranged at intervals from top to bottom along the vertical direction.

[0016] In one embodiment, a moving assembly and a placement table are further included. The moving assembly includes a first moving module and a second moving module arranged on the first moving module. The placement table is arranged on the second moving module. The first moving module can drive the placement table to move along a first horizontal direction, and the second moving module can drive the placement table to move along a second horizontal direction. The first horizontal direction and the second horizontal direction form an angle. The placement table is used for placing the sample cell.

[0017] In one embodiment, the protective cabinet further includes a door panel. An operation opening is provided on the side wall of the sample chamber. The door panel is hinged to the side wall of the sample chamber, and the door panel is used for covering the operation opening.

[0018] In one embodiment, the cabinet body further includes a second partition board. The second partition board is arranged between the sealing chamber and the sample chamber. The light-transmitting sheet is installed on the second partition board. The laser and the light guiding component are both fixed on the side of the second partition board facing the sealing chamber, and the focusing component is fixed on the side of the second partition board facing the sample chamber.

[0019] The above device for preparing nanoparticles has a sealed chamber and a sample chamber respectively arranged inside the cabinet body. The laser and the light guiding component of the external optical path assembly are both arranged in the sealed chamber, and the sample cell and the focusing component are both arranged in the sample chamber. The laser emitted by the laser can enter the sample chamber through the light guiding of the light guiding component and then through the light transmissive sheet. After being focused by the focusing component in the sample chamber, it irradiates the target material and the liquid medium in the sample cell, so that the laser interacts with the target material and the liquid medium in the sample cell, thereby preparing nanoparticles. Since the laser and the light guiding component of the external optical path assembly are both arranged in the sealed chamber, and the sealed chamber is isolated from the sample chamber, it prevents foreign matters such as the particles, dust generated during the production process or the liquid medium in the sample cell from entering the sealed chamber from the sample chamber, thereby avoiding the contamination of the laser and the light guiding component of the external optical path assembly by foreign matters, effectively preventing the laser and the light guiding component of the external optical path assembly from being damaged by foreign matters, protecting the laser and the external optical path assembly, reducing the risk of damage to the device for preparing nanoparticles, improving the reliability of the device for preparing nanoparticles, and setting the sealed chamber to be isolated from the external environment of the protective cabinet to prevent foreign matters such as dust in the external environment from entering the sealed chamber and contaminating the laser and the light guiding component of the external optical path assembly, further reducing the risk of damage to the device for preparing nanoparticles. In addition, the laser, the external optical path assembly and the sample cell are all arranged inside the cabinet body, which can prevent the operator from being accidentally burned by the laser during the process of preparing nanoparticles, improving the safety of operation, and can block some foreign matters such as dust through the cabinet body to prevent the foreign matters in the external environment from affecting the liquid medium and the target material inside the sample cell. Description of the Drawings

[0020] Figure 1 It is a perspective view of the device for preparing nanoparticles at one angle in some embodiments of the present application.

[0021] Figure 2 It is a perspective view of the device for preparing nanoparticles at another angle in some embodiments of the present application.

[0022] Figure 3 It is Figure 2 The structural diagram of the device for preparing nanoparticles shown after removing the maintenance panel.

[0023] Figure 4 It is a perspective view of the device for preparing nanoparticles at one angle in some embodiments of the present application after removing the door panel, control panel and decorative panel.

[0024] Figure 5 It is Figure 4 The perspective view of another angle of the device for preparing nanoparticles shown.

[0025] Figure 6A perspective view of the device for preparing nanoparticles in some embodiments of the present application from another angle (a part of the maintenance door and the cabinet body is removed in the figure).

[0026] Figure 7 A perspective view of the device for preparing nanoparticles in some embodiments of the present application from yet another angle (a part of the maintenance door and the cabinet body is removed in the figure).

[0027] In the figure:

[0028] 1. Protective cabinet; 101. Cabinet body; 102. Sealed chamber; 103. Sample chamber; 104. Electric control chamber; 1041. Maintenance opening; 105. Control panel; 1051. Panel body; 1052. Laser control screen; 1053. Moving module control screen; 1054. Control buttons; 106. Decorative panel; 107. Door panel; 108. Maintenance board; 1081. Ventilation holes; 109. First partition; 110. Second partition; 111. Power supply chamber; 1111. Heat dissipation holes; 2. Sample cell; 3. Laser; 4. External optical path component; 401. Light guiding component; 402. Focusing component; 5. Power supply component; 6. Electric control component; 601. Circuit board; 602. Electronic components; 7. First exhaust fan; 8. Second exhaust fan; 9. Moving component; 901. First moving module; 902. Second moving module; 10. Placement table; 11. Moving wheels; 12. First air guiding cover; 13. Second air guiding cover; 14. Liquid adding pipe. Detailed implementation manners

[0029] To make the above objects, features, and advantages of the present application more obvious and understandable, the following describes the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0031] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In this application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0035] Refer to Figure 1 、 Figure 4 and Figure 5 , Figure 1 shows a perspective view of the device for preparing nanoparticles at an angle in some embodiments of this application; Figure 4 shows a perspective view of the device for preparing nanoparticles at an angle after removing the door panel, control panel, and decorative panel in some embodiments of this application; Figure 5 showsFigure 4 A perspective view of another angle of the device for preparing nanoparticles shown. The device for preparing nanoparticles provided by an embodiment of the present application includes a protection cabinet 1, a sample cell 2, a laser 3, and an external optical path assembly 4. The protection cabinet 1 includes a cabinet main body 101, a sealed chamber 102 and a sample chamber 103 both disposed inside the cabinet main body 101, and the sealed chamber 102 and the sample chamber 103 are spaced apart. The sample cell 2 is disposed in the sample chamber 103, and the sample cell 2 is used for disposing a liquid medium and a target material. Combining Figure 7 , the external optical path assembly 4 includes a light guiding member 401, a light transmissive sheet (not shown in the figure), and a focusing member 402. The light guiding member 401 is disposed in the sealed chamber 102 and on one side of the laser 3. The light transmissive sheet is disposed between the sealed chamber 102 and the sample chamber 103. The focusing member 402 is disposed in the sample chamber 103 and above the sample cell 2. The laser light emitted by the laser 3 can sequentially pass through the light guiding member 401, the light transmissive sheet, and the focusing member 402 and irradiate into the sample cell 2. In actual implementation, the device for preparing nanoparticles further includes a cooling assembly, and the cooling assembly can be a water cooling assembly. During the process of preparing nanoparticles, the liquid medium inside the sample cell 2 is cooled by the cooling assembly.

[0036] A sealed chamber 102 and a sample chamber 103 are respectively arranged inside the cabinet body 101. The laser 3 and the light guiding component 401 of the external optical path component 4 are both arranged in the sealed chamber 102, and the sample cell 2 and the focusing component 402 are both arranged in the sample chamber 103. The laser emitted by the laser 3 can enter the sample chamber 103 through the light guiding of the light guiding component 401 and then through the light transmissive sheet, and after being focused by the focusing component 402 in the sample chamber 103, it irradiates the sample cell 2, so that the laser interacts with the target material and the liquid medium in the sample cell 2, thereby preparing nanoparticles. Since the laser 3 and the light guiding component 401 of the external optical path component 4 are both arranged in the sealed chamber 102, and the sealed chamber 102 is isolated from the sample chamber 103, it prevents foreign matters such as the generated particles, dust or the liquid medium in the sample cell 2 from entering the sealed chamber 102 from the sample chamber 103, thus avoiding the contamination of the laser 3 and the light guiding component 401 of the external optical path component 4 by foreign matters, effectively preventing the laser 3 and the light guiding component 401 of the external optical path component 4 from being damaged by foreign matters, protecting the laser 3 and the external optical path component 4, reducing the risk of damage to the device for preparing nanoparticles, improving the reliability of the device for preparing nanoparticles, and setting the sealed chamber 102 to be isolated from the external environment of the protective cabinet 1 to prevent foreign matters such as dust in the external environment from entering the sealed chamber 102 and contaminating the laser 3 and the light guiding component 401 of the external optical path component 4, further reducing the risk of damage to the device for preparing nanoparticles. In addition, the laser 3, the external optical path component 4 and the sample cell 2 are all arranged inside the cabinet body 101, which can prevent the operator from being accidentally burned by the laser during the process of preparing nanoparticles, improving the safety of operation, and can block some foreign matters such as dust through the cabinet body 101 to prevent the foreign matters in the external environment from affecting the liquid medium and the target material inside the sample cell 2.

[0037] In order to facilitate the power supply to the laser 3, in some embodiments, the device for preparing nanoparticles further includes a power supply component 5. The power supply component 5 is electrically connected to the laser 3. The protective cabinet 1 further includes a power supply chamber 111 arranged inside the cabinet body 101. The power supply component 5 is arranged in the power supply chamber 111. The side wall of the power supply chamber 111 is provided with heat dissipation holes 1111, and the heat dissipation holes 1111 communicate the power supply chamber 111 with the outside of the cabinet body 101. Since the power supply component 5 is installed in the power supply chamber 111, the power supply component 5 will generate heat during the power supply process. In this example, the power supply chamber 111 is spaced from the sample chamber 103 and the sealed chamber 102 respectively to prevent the heat in the power supply chamber 111 from being conducted to the sealed chamber 102 and the sample chamber 103. Arranging the power supply chamber 111 inside the cabinet body 101 provides space for the installation of the power supply component 5, which is beneficial to separately arranging the power supply component 5 and the laser 3.

[0038] In actual implementation, the laser 3 has a cooling component, which is a water-cooling component, and the cooling component reduces the heat generated when the laser 3 operates.

[0039] It can be understood that, in order to achieve stable power supply of the power supply component 5 to the laser 3, referring to Figure 2 , Figure 3 , Figure 6 and Figure 7 , the device for preparing nanoparticles further includes an electronic control component 6. The power supply component 5 and the laser 3 are respectively electrically connected to the electronic control component 6, so that the power supply component 5 is electrically connected to the laser 3 through the electronic control component 6. The electronic control component 6 is mainly used to protect the laser 3, so that the power supply component 5 supplies power to the laser 3 safely. The electronic control component 6 includes a circuit board 601 and electronic components 602 arranged on the circuit board 601. The protective cabinet 1 further includes an electronic control chamber 104 arranged inside the cabinet body 101, and the electronic control component is arranged in the electronic control chamber 104. By arranging the electronic control chamber 104 for installing the electronic control component inside the cabinet body 101, it is beneficial to the layout of the electronic control component 6.

[0040] Combined with Figure 3 and Figure 6 , the device for preparing nanoparticles further includes a first exhaust fan 7. An air outlet is arranged on the side wall of the electronic control chamber 104, and the air outlet communicates the electronic control chamber 104 with the outside of the cabinet body 101; the first exhaust fan 7 is arranged at the air outlet. Since the electronic control component 6 generates heat during operation, by arranging the air outlet on the side wall of the electronic control chamber 104, the first exhaust fan 7 can be used to discharge the heat inside the electronic control chamber 104 to the outside of the protective cabinet 1 to cool the electronic control component 6, preventing the heat from accumulating inside the electronic control chamber 104 and damaging the electronic control component 6, and further reducing the risk of damage to the device for preparing nanoparticles.

[0041] Referring to Figure 2 and Figure 3 , in order to facilitate the maintenance of the electronic control component 6 inside the electronic control chamber 104, an access opening 1041 is arranged on the side wall of the electronic control chamber 104. The protective cabinet 1 further includes an access panel 108 for covering the access opening 1041, and the access panel 108 is detachably connected to the side wall of the electronic control chamber 104. In this example, the access opening 1041 and the air outlet are arranged on the same side wall of the electronic control chamber 104, and the access opening 1041 and the air outlet are spaced apart. When it is necessary to maintain the electronic control component 6, the access panel 108 can be removed from the side wall of the electronic control chamber 104, so that the maintenance personnel can maintain the electronic control component 6 inside the electronic control chamber 104, effectively improving the reliability of the device for preparing nanoparticles. After the maintenance is completed, the access panel 108 is reinstalled on the side wall of the electronic control chamber 104, so that the access panel 108 covers the access opening 1041.

[0042] In actual implementation, the maintenance board 108 can be connected to the side wall of the electronic control chamber 104 by screws, or clamped to the side wall of the electronic control chamber 104 by a fastener, or detachably connected to the side wall of the electronic control chamber 104 by a magic tape. Here, no specific restrictions are imposed on the structure of the detachable connection between the maintenance board 108 and the side wall of the electronic control chamber 104.

[0043] In one example, ventilation holes 1081 are provided on the maintenance board 108. The ventilation holes 1081 communicate with the inside of the electronic control chamber 104 and the outside of the cabinet main body 101. The air outside the protection cabinet 1 can enter the electronic control chamber 104 through the ventilation holes 1081 to maintain the air pressure balance between the electronic control chamber 104 and the outside of the protection cabinet 1.

[0044] In some embodiments, referring to Figure 7 , the device for preparing nanoparticles further includes a second exhaust fan 8. The protection cabinet 1 further includes a first partition 109. The electronic control chamber 104 and the sample chamber 103 are spaced apart along the horizontal direction, and the first partition 109 is blocked between the electronic control chamber 104 and the sample chamber 103. The first partition 109 is provided with a ventilation opening communicating the sample chamber 103 and the electronic control chamber 104. An air outlet is provided on the side wall of the electronic control chamber 104 opposite to the first partition 109, and the air outlet is opposite to the ventilation opening. The second exhaust fan 8 is provided in the ventilation opening. Spacing the electronic control chamber 104 and the sample chamber 103 along the horizontal direction can make full use of the space of the cabinet main body 101 in the horizontal direction, which is beneficial to the space optimization inside the cabinet main body 101. By providing a ventilation opening on the first partition 109, since the second exhaust fan 8 is installed in the ventilation opening, the gas in the sample chamber 103 can be pumped into the electronic control chamber 104 through the second exhaust fan 8, and then pumped outside the cabinet main body 101 through the first exhaust fan 7. With this design, when the liquid phase medium inside the sample cell 2 has a pungent odor, rapid ventilation of the sample chamber 103 can be achieved. In addition, since the ventilation opening is provided on the first partition 109 and the air outlet is provided on the side wall of the electronic control chamber 104 opposite to the first partition 109, and the air outlet is directly opposite to the ventilation opening, under the action of the first exhaust fan 7 and the second exhaust fan 8, the gas inside the sample chamber 103 is quickly pumped out of the ventilation opening through the second exhaust fan 8 and then quickly pumped outside the cabinet main body 101 through the first exhaust fan 7, preventing the gas in the sample chamber 103 from staying in the electronic control chamber 104, which is beneficial to quickly discharging the gas in the sample chamber 103. In addition, when discharging the gas inside the sample chamber 103, the heat inside the electronic control chamber 104 can also be taken out to the outside of the protection cabinet 1.

[0045] Furthermore, a first air guide cover 12 is provided on the air inlet side of the first exhaust fan 7, and a second air guide cover 13 is provided on the air outlet side of the second exhaust fan 8. The first air guide cover 12 and the second air guide cover 13 are spaced apart and opposite to each other. The setting of the air guide cover is more conducive to exhausting the gas inside the sample chamber 103 through the first exhaust fan 7 and the second exhaust fan 8.

[0046] Refer to Figure 6 and Figure 7 , the power supply chamber 111, the sealing chamber 102 and the sample chamber 103 are respectively arranged at intervals from top to bottom along the vertical direction. In this way, it is beneficial to utilize the space in the height direction of the cabinet body 101, and the sealing chamber 102 and the sample chamber 103 are two adjacent chambers, which is beneficial to guiding and irradiating the laser emitted by the laser 3 into the sample cell 2 in the sample chamber 103.

[0047] In some embodiments, refer to Figure 4 , Figure 5 , Figure 6 and Figure 7, The device for preparing nanoparticles further includes a moving assembly 9 and a placement table 10. The moving assembly 9 includes a first moving module 901 and a second moving module 902 provided on the first moving module 901. The placement table 10 is provided on the second moving module 902. The first moving module 901 can drive the placement table 10 to move along a first horizontal direction, and the second moving module 902 can drive the placement table 10 to move along a second horizontal direction. The first horizontal direction and the second horizontal direction form an angle. The placement table 10 is used to place the sample cell 2. In this example, the first horizontal direction is perpendicular to the second horizontal direction. Since the second moving module 902 is provided on the first moving module 901 and the placement table 10 is provided on the second moving module 902, when the first moving module 901 is driven, it can drive the second moving module 902 and the placement table 10 to move along the first direction. When the second moving module 902 is driven, it can drive the placement table 10 to move along the second direction. With the cooperation of the first moving module 901 and the second moving module 902, the movement trajectory of the placement table 10 can be controlled. It can be understood that when preparing nanoparticles, a target and a liquid medium are placed inside the sample cell 2, and the laser emitted by the laser 3 irradiates the target inside the sample cell 2. When it is necessary to prepare nanoparticles by the liquid-phase laser ablation technique, the sample cell 2 is placed on the placement table 10, and the first moving module 901 and the second moving module 902 are controlled to move, thereby driving the sample cell 2 on the placement table 10 to move along a set trajectory. Without changing the laser irradiation position, the ablation path can be controlled by the movement of the sample cell 2, avoiding repeated laser ablation. By precisely controlling the relative movement path and speed of the laser and the target, the target utilization rate and ablation efficiency are improved, which is conducive to improving the preparation efficiency. When preparing nanoparticles by the liquid-phase laser irradiation technique, the first moving module 901 and the second moving module 902 can be stopped, so that the placement table 10 remains stationary, and a magnetic stirrer is placed on the placement table 10. At this time, the container in the magnetic stirrer serves as the sample cell 2, so that the position of the laser relative to the magnetic stirring container remains unchanged. In this way, the device for preparing nanoparticles can be applied to both the liquid-phase laser ablation technique for preparing nanoparticles and the liquid-phase laser irradiation technique for preparing nanoparticles, increasing the versatility of the device for preparing nanoparticles.

[0048] In this example, both the first moving module 901 and the second moving module 902 are driven by motors. Of course, in other examples, they can also be driven by cylinders or hydraulic cylinders.

[0049] Refer to Figure 1 , To facilitate adding liquid to the liquid medium inside the sample cell 2 or cooling the coolant of the cooling component of the sample cell 2, the equipment for preparing nanoparticles further includes a liquid adding pipe 14. The liquid adding pipe 14 is connected to the side wall of the sample chamber 103. One end of the liquid adding pipe 14 is exposed outside the cabinet main body 101, and the other end is provided in the sample chamber 103.

[0050] Refer to Figure 1 and Figure 4 Figure 4 , the protective cabinet 1 further includes a door panel 107. An operation opening is provided on the side wall of the sample chamber 103. The door panel 107 is hinged to the side wall of the sample chamber 103. The door panel 107 is used to selectively block the operation opening. In this way, when it is necessary to add a target material into the sample cell 2 or replace the liquid medium in the sample cell 2 or clean the sample cell 2, the operation opening can be opened through the door panel 107. When preparing nanoparticles, the operation opening can be blocked through the door panel 107, which is convenient for operation.

[0051] In this example, there are two door panels 107. In other examples, the number of door panels 107 can also be flexibly adjusted according to needs, and the number of door panels 107 is not specifically limited here.

[0052] Refer to Figure 4 , Figure 5 and Figure 7 Figure 7 , the cabinet main body 101 further includes a second partition 110. The second partition 110 is arranged between the sealed chamber 102 and the sample chamber 103. The light-transmitting sheet is installed on the second partition 110. The laser 3 and the light guiding component 401 are both fixed on the side of the second partition 110 facing the sealed chamber 102, and the focusing component 402 is fixed on the side of the second partition 110 facing the sample chamber 103. In actual implementation, according to the requirements of preparing nanoparticles, the laser 3, the light guiding component 401, the light-transmitting sheet and the focusing component 402 are respectively fixed at appropriate positions on the second partition 110. During the process of preparing nanoparticles, the relative positions of the laser 3, the light guiding component 401, the light-transmitting sheet and the focusing component 402 do not need to be adjusted, avoiding laser burning of the operator during the adjustment process, improving safety, and at the same time reducing the requirements for the operator, which is beneficial to modular setting.

[0053] In actual implementation, in order to realize the fine adjustment of the laser focus and adjust the initial ablation position of the laser on the target material, the focusing component 402 includes a focusing cylinder body (not shown in the figure), a focusing ring (not shown in the figure) and a focusing mirror (not shown in the figure) arranged inside the focusing cylinder body. The focusing ring is connected to the focusing mirror, and the focusing ring is rotatably arranged inside the focusing cylinder body. The focusing mirror is spaced and opposite to the light-transmitting sheet. The focusing cylinder body is fixed to the side of the second partition 110 facing the sample chamber 103. By rotating the focusing ring relative to the focusing cylinder body, the focusing mirror is driven to move along the axial direction of the focusing cylinder body, thereby realizing the adjustment of the laser focal length.

[0054] In one example, the focusing component 402 further includes a protective mirror (not shown in the figure) arranged inside the focusing cylinder body. The protective mirror and the focusing mirror are spaced along the axial direction of the focusing cylinder body, and the protective mirror faces away from the light-transmitting sheet.

[0055] In some embodiments, the protection cabinet 1 further includes a control board 105. The control board 105 is arranged on the outer side of the cabinet main body 101. In this example, the control board 105 is arranged above the operation port and is opposite to the operation port. The control board 105 includes a board body, and a control button 1054, a laser control screen 1052, and a moving module control screen 1053 which are all arranged on the board body. The board body 1051 is connected to the cabinet main body 101. The control button 1054 includes a laser control button 1054 and a moving module control button 1054. Both the laser control button 1054 and the laser control screen 1052 can control the laser 3. When in use, the way to control the laser 3 can be flexibly selected according to needs; both the moving module control button 1054 and the moving module control screen 1053 can control the operation of the first moving module 901 and the second moving module 902. When in use, the way to control the two groups of moving modules can be flexibly selected according to needs.

[0056] To improve the aesthetics of the protection cabinet 1, the protection cabinet 1 further includes a decorative board 106. The decorative board 106 is arranged on the top of the cabinet main body 101.

[0057] In some embodiments, the device for preparing nanoparticles further includes moving wheels 11. The moving wheels 11 are arranged at the bottom of the cabinet main body 101. By arranging the moving wheels 11, it is convenient to carry the device for preparing nanoparticles. In this example, there are four moving wheels 11, and the four moving wheels 11 are respectively distributed at the four vertices of the same rectangle. In other examples, the number of the moving wheels 11 can be flexibly set according to needs, and the specific number of the moving wheels is not limited herein.

[0058] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0059] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An apparatus for preparing nanoparticles, characterized in that, Comprising: A protective cabinet, including a cabinet main body, a sealed chamber and a sample chamber both arranged inside the cabinet main body, with the sealed chamber and the sample chamber being spaced apart; A sample cell, which is arranged in the sample chamber and is used for arranging a liquid medium and a target; A laser, which is arranged in the sealed chamber and is used for emitting laser; An external optical path component, which includes a light guiding component, a light transmitting sheet and a focusing component. The light guiding component is arranged in the sealed chamber and on one side of the laser. The light transmitting sheet is arranged between the sealed chamber and the sample chamber. The focusing component is arranged in the sample chamber and above the sample cell. The laser beam emitted by the laser can sequentially pass through the light guiding component, the light transmitting sheet and the focusing component and irradiate into the sample cell.

2. The device for preparing nanoparticles according to claim 1, characterized in that, It further includes a power supply component electrically connected to the laser. The protective cabinet further includes a power supply chamber arranged inside the cabinet main body. The power supply component is arranged in the power supply chamber. The side wall of the power supply chamber is provided with heat dissipation holes, and the heat dissipation holes communicate the power supply chamber with the outside of the cabinet main body.

3. The apparatus for preparing nanoparticles according to claim 2, wherein It further includes an electrical control component electrically connected to the power supply component and the laser respectively. The protective cabinet further includes an electrical control chamber arranged inside the cabinet main body. The electrical control component is arranged in the electrical control chamber.

4. The device for preparing nanoparticles according to claim 3, characterized in that, It further includes a first exhaust fan. The side wall of the electrical control chamber is provided with an air outlet, and the air outlet communicates the electrical control chamber with the outside of the cabinet main body. The first exhaust fan is arranged at the air outlet.

5. The device for preparing nanoparticles according to claim 4 further includes a second exhaust fan. The protective cabinet further includes a first partition board. The electrical control chamber and the sample chamber are spaced apart along the horizontal direction, and the first partition board is blocked between the electrical control chamber and the sample chamber. The first partition board is provided with a ventilation opening communicating the sample chamber and the electrical control chamber. The side wall of the electrical control chamber opposite to the first partition board is provided with the air outlet, and the air outlet is opposite to the ventilation opening. The ventilation opening is provided with the second exhaust fan.

6. The device for preparing nanoparticles according to claim 3, characterized in that, The side wall of the electrical control chamber is provided with a maintenance opening. The protective cabinet further includes a maintenance board for covering the maintenance opening, and the maintenance board is detachably connected to the side wall of the electrical control chamber.

7. The device for preparing nanoparticles according to claim 3, wherein The power supply chamber, the sealed chamber and the sample chamber are respectively spaced apart in sequence from top to bottom along the vertical direction.

8. The apparatus for preparing nanoparticles according to any one of claims 1 to 7, characterized in that, It further includes a moving component and a placement table. The moving component includes a first moving module and a second moving module arranged on the first moving module. The placement table is arranged on the second moving module. The first moving module can drive the placement table to move along a first horizontal direction, and the second moving module can drive the placement table to move along a second horizontal direction. The first horizontal direction and the second horizontal direction form an angle. The placement table is used for placing the sample cell.

9. The device for preparing nanoparticles according to any one of claims 1 to 7, characterized in that, The protection cabinet further includes a door panel. An operation opening is provided on the side wall of the sample chamber. The door panel is hinged to the side wall of the sample chamber, and the door panel is used to block the operation opening.

10. The device for preparing nanoparticles according to any one of claims 1 to 7, characterized in that, The cabinet body further includes a second partition board. The second partition board is arranged between the sealed chamber and the sample chamber. The light-transmitting sheet is installed on the second partition board. Both the laser and the light guide component are fixed on the side of the second partition board facing the sealed chamber, and the focusing component is fixed on the side of the second partition board facing the sample chamber.

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