Freeze dryer

Abstract

The utility model relates to the technical field of material synthesis equipment, in particular to a freezing dryer which comprises a freezing machine box, and a plurality of fixing supports are fixedly installed on the inner wall of the freezing machine box. The crystal precipitation state on the surface of the internal tray is observed through the built-in inspection mechanism, so that the freezing temperature and time can be conveniently, timely and effectively adjusted according to the crystal state, the incomplete precipitation of perovskite crystals caused by insufficient temperature and pressure in the freeze drying process is avoided, the crystal precipitation yield is reduced, and the product quality is improved. And the position of the turntable is rotated through the rotating mechanism, so that an electron microscope can conveniently observe crystal precipitation states at different positions on the surface of the tray.

Description

Technical Field

[0001] The utility model relates to the technical field of material synthesis equipment, in particular to a freeze dryer. Background Art

[0002] All-inorganic perovskite films are mainly nanocrystalline films. First, the nanocrystals are prepared and dispersed in a colloidal solution through a liquid phase synthesis method, and then assembled into a film using processes such as spin coating, drop coating, and centrifugation.

[0003] In the process of freezing and precipitation, the existing freeze dryer needs to precipitate the perovskite single crystal film in an environment with a temperature of 0° and a pressure of 10Pa. However, during the freeze drying process, the state of the perovskite film and the degree of crystal precipitation cannot be effectively and intuitively observed, and corresponding adjustments cannot be made according to the internal crystal film state. Therefore, it takes a long time and energy to ensure the complete precipitation of the perovskite film, which is a waste of resources. To this end, we propose a freeze dryer. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a freeze dryer.

[0005] The technical solution adopted by the utility model to solve the technical problem is a freeze dryer, comprising a freezer box, a plurality of fixed brackets are fixedly installed on the inner wall of the freezer box, a lifting adjustment rod is fixedly connected to one end of the fixed bracket away from the freezer box, an electron microscope is fixedly installed on the bottom end of the lifting adjustment rod, a signal output end of the electron microscope is connected to a signal connection line through a signal transmission line, and the signal transmission line passes through the interior of the fixed bracket, and an end of the signal connection line away from the electron microscope is connected to a signal transfer box;

[0006] The bottom end of the refrigeration chassis is fixedly connected to a chassis base, a driving motor is installed at the center of the chassis base, a transmission rod is installed at the power output end of the driving motor, a rotating base is fixedly installed on the top of the transmission rod, the outer periphery of the rotating base is rotatably connected to a rotating shaft, and the outer axial surface of the rotating shaft is rotatably connected to the inner arc surface of the fixed plate.

[0007] By adopting the above technical solution, the crystal precipitation state on the surface of the internal tray is observed through the built-in inspection mechanism, so that the freezing temperature and time can be conveniently, timely and effectively adjusted according to the crystal state, avoiding incomplete precipitation of perovskite crystals due to insufficient temperature and pressure during the freeze-drying process, thereby reducing the yield of crystal precipitation, and the position of the turntable can be rotated by the rotating mechanism to facilitate the electron microscope to observe the crystal precipitation state at different positions on the tray surface.

[0008] Specifically, the side wall of the refrigeration cabinet is provided with an inspection window for conveniently observing the precipitation of crystals inside.

[0009] By adopting the above technical solution, the internal state of the refrigeration cabinet can be actually observed through the inspection window.

[0010] Specifically, a transmission line is connected through the side wall of the signal transfer box, and the signal transfer box is connected to an external display through the transmission line.

[0011] By adopting the above technical solution, the image observed by the electron microscope is transmitted to the outside world through the transmission line.

[0012] Specifically, a plurality of refrigeration devices are installed inside the chassis base.

[0013] By adopting the above technical solution, the interior of the freezer cabinet is frozen by using a refrigeration device.

[0014] Specifically, a fixed base is fixedly installed inside the freezing cabinet, a plurality of freezing trays are placed on the top of the fixed base, and each of the electron microscopes is arranged above the freezing tray.

[0015] By adopting the above technical solution, the perovskite crystals precipitated on the surface of the freezing tray are observed through each electron microscope, so that corresponding adjustments can be made according to the precipitation progress of different crystals.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The technical solution of the present application makes it convenient to observe the state of crystal precipitation at any time during the freeze-drying process through the structural design of a fixed base, a freezing tray, a fixed bracket, a lifting adjustment rod, an electron microscope, a signal connecting line and a signal adapter box, so that the freezing temperature and time can be adjusted according to the crystal state, thereby relatively reducing the time and energy to precipitate perovskite crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is an axonometric drawing of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall planar structure of the equipment of the utility model;

[0021] Figure 3 This is a schematic diagram of the equipment structure at the chassis base of the utility model;

[0022] In the figure: 1. Refrigeration chassis; 2. Chassis base; 3. Fixed base; 4. Refrigeration tray; 5. Fixed bracket; 6. Lifting adjustment rod; 7. Electron microscope; 8. Signal connecting line; 9. Signal transfer box; 10. Transmission line; 11. Fixed plate; 12. Rotating shaft; 13. Rotating base; 14. Driving motor; 15. Transmission rod; 16. Inspection window. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] See also Figure 1-3 The embodiment of the utility model provides a technical solution: a freeze dryer, comprising a freezer box 1, a plurality of fixed brackets 5 are fixedly installed on the inner wall of the freezer box 1, the end of the fixed bracket 5 away from the freezer box 1 is fixedly connected to a lifting adjustment rod 6, the bottom end of the lifting adjustment rod 6 is fixedly installed with an electron microscope 7, the signal output end of the electron microscope 7 is connected to a signal connection line 8 through a signal transmission line, and the signal transmission line passes through the interior of the fixed bracket 5, and the end of the signal connection line 8 away from the electron microscope 7 is connected to a signal transfer box 9;

[0025] The bottom end of the refrigeration chassis 1 is fixedly connected to the chassis base 2, a driving motor 14 is installed at the center of the chassis base 2, a transmission rod 15 is installed at the power output end of the driving motor 14, a rotating base 13 is fixedly installed on the top of the transmission rod 15, the outer periphery of the rotating base 13 is rotatably connected to a rotating shaft 12, and the outer axial surface of the rotating shaft 12 is rotatably connected to the inner arc surface of the fixed plate 11.

[0026] When in use, the crystal precipitation state on the surface of the internal tray is observed through the built-in inspection mechanism, so that the freezing temperature and time can be adjusted conveniently, timely and effectively according to the crystal state, avoiding incomplete precipitation of perovskite crystals due to insufficient temperature and pressure during the freeze-drying process, thereby reducing the yield of crystal precipitation. The position of the turntable is rotated by the rotating mechanism to facilitate the electron microscope 7 to observe the crystal precipitation state at different positions on the tray surface.

[0027] As shown in the figure, the side wall of the refrigeration cabinet 1 is provided with an inspection window 16 for conveniently observing the precipitation of crystals inside.

[0028] When in use, the state inside the refrigerating cabinet 1 can be actually observed through the inspection window 16 .

[0029] As shown in the figure, a transmission line 10 is connected through the side wall of the signal transfer box 9 , and the signal transfer box 9 is connected to an external display through the transmission line 10 .

[0030] When in use, the image observed by the electron microscope 7 is transmitted to the outside world via the transmission line 10 .

[0031] As shown in the figure, a plurality of refrigeration devices are installed inside the chassis base 2 .

[0032] When in use, the interior of the freezing cabinet 1 is frozen by a refrigeration device.

[0033] As shown in the figure, a fixed base 3 is fixedly installed inside the freezing cabinet 1, a plurality of freezing trays 4 are placed on the top of the fixed base 3, and each of the electron microscopes 7 is arranged above the freezing tray 4.

[0034] When in use, the perovskite crystals precipitated on the surface of the freezing tray 4 are observed through each electron microscope 7, so that corresponding adjustments can be made according to different crystal precipitation progresses.

[0035] The working principle and use process of the utility model are as follows: first, the volume containing perovskite is evenly coated on the surface of the freezing tray 4, and then the freezing tray 4 is placed on the bracket of the fixed base 3, and then the inspection window 16 is closed to open the freezing mechanism in the chassis base 2. During the freezing process, it takes a long time to precipitate the perovskite crystals. During the precipitation, the crystal precipitation state on the surface of the freezing tray 4 is observed through the electron microscope 7 installed at the bottom of the fixed bracket 5, and the angle of the electron microscope 7 is adjusted by the lifting and lowering adjustment rod 6. The crystals observed by the electron microscope 7 are transmitted to the signal connection line 8 through the signal line, and the signal connection line 8 is connected to the signal connection line 8. The wire 8 is transmitted to the signal transfer box 9, and the signal transfer box 9 transmits the electrical signal to the external display through the transmission line 10 and converts it into a display screen to observe the crystal state on the surface of the internal tray. During observation, the drive motor 14 is operated to run, and the rotating base 13 is driven to rotate through the transmission rod 15. The rotating base 13 rotates in the fixed plate 11 at the top of the chassis base 2 through the rotating shaft 12, thereby driving the freezing tray 4 installed on the top of the fixed base 3 to rotate, so that the electron microscope 7 can observe the crystal precipitation state at different positions, and observe the surface of the frozen crystals in the freezing chassis 1 through the inspection window 16.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A freeze dryer, characterized in that: The invention comprises a refrigerating box (1), wherein a plurality of fixing brackets (5) are fixedly mounted on the inner wall of the refrigerating box (1), wherein one end of the fixing bracket (5) away from the refrigerating box (1) is fixedly connected to a lifting and lowering adjustment rod (6), and an electron microscope (7) is fixedly mounted on the bottom end of the lifting and lowering adjustment rod (6), wherein a signal output end of the electron microscope (7) is connected to a signal connecting line (8) via a signal transmission line, and the signal transmission line passes through the interior of the fixing bracket (5), and the end of the signal connecting line (8) away from the electron microscope (7) is connected to a signal transfer box (9); The bottom end of the refrigeration cabinet (1) is fixedly connected to a cabinet base (2); a driving motor (14) is installed at the center of the cabinet base (2); a transmission rod (15) is installed at the power output end of the driving motor (14); a rotating base (13) is fixedly installed at the top end of the transmission rod (15); the outer periphery of the rotating base (13) is rotatably connected to a rotating shaft (12); the outer axial surface of the rotating shaft (12) is rotatably connected to the inner arc surface of the fixed plate (11).

2. A freeze dryer according to claim 1, characterized in that: The side wall of the freezing cabinet (1) is provided with an inspection window (16) for conveniently observing the precipitation of crystals inside.

3. A freeze dryer according to claim 1, characterized in that: A transmission line (10) is connected through the side wall of the signal transfer box (9), and the signal transfer box (9) is connected to an external display via the transmission line (10).

4. A freeze dryer according to claim 1, characterized in that: A plurality of refrigeration devices are installed inside the chassis base (2).

5. A freeze dryer according to claim 1, characterized in that: A fixed base (3) is fixedly installed inside the freezing cabinet (1), a plurality of freezing trays (4) are placed on the top of the fixed base (3), and each of the electron microscopes (7) is arranged above the freezing tray (4).

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