Sample drying device for manufacturing transmission electron microscope sample

Abstract

The invention relates to the technical field of material science and engineering, and discloses a sample drying device for transmission electron microscope sample manufacturing, the sample drying device comprises a rotary bin drying device, the rotary bin drying device comprises a cylindrical rotary bin, a water vapor discharge hole is formed in the upper part of the side surface of the cylindrical rotary bin, and the cylindrical rotary bin is provided with a water vapor outlet; a wheel connection rotating column is welded to the top of the columnar rotating bin, a horizontal conical wheel is welded to the top of the wheel connection rotating column, a top shell connection rotating rod is welded to the top of the horizontal conical wheel, a vertical conical wheel is meshed with the back face of the horizontal conical wheel, and an indirect power rod is welded to the back face of the vertical conical wheel. A vessel placing window is arranged in the middle of the side face of the columnar rotating bin, and the problems that when a sample is placed in a vessel to be dried, only moisture on the outer surface of the sample needs to be removed in the sample drying process, the sample is dispersed in moisture needing to be dried and evaporated in the process, and internal component water or the structure of the sample is prone to being damaged in the drying process are solved. The sample quality is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of material science and engineering, and more particularly to a sample drying device used for preparing transmission electron microscope samples. Background Art

[0002] TEM, the full name of which is transmission electron microscope, is a high-resolution, high-magnification electron optical instrument. It uses an extremely short-wavelength electron beam as a light source, and forms an image after multiple-stage magnification through an electromagnetic lens to observe the ultrastructure of the sample. The working principle of TEM is based on the interaction between electrons and matter. When the accelerated and focused electron beam is projected onto a very thin sample, the electrons collide with the atoms in the sample and change direction, thereby producing a three-dimensional angle scattering. The size of the scattering angle is related to the density and thickness of the sample, so different images of light and dark can be formed. After being magnified and focused, these images will be displayed on imaging devices (such as fluorescent screens, films, and photosensitive coupling components). The preparation of transmission electron microscope samples is a complex and delicate process, which aims to ensure that the samples can obtain clear images under the transmission electron microscope and reflect their microscopic structures. In the sample processing during sample preparation, for biological samples and certain special materials, such as samples that are easily oxidized or perishable, pre-treatment steps such as fixation, dehydration, and embedding are required immediately after sampling to maintain the original structure and chemical composition of the samples. For solid samples, it may be necessary to prepare them into ultra-thin sections by cutting, grinding, or ion etching in order to During observation under a transmission electron microscope, in order to ensure the penetration of the electron beam, prevent sample damage, and improve imaging quality to meet experimental requirements, the sample needs to be dried during sample preparation. Sample drying is a key step in the production of transmission electron microscope samples, but it usually does not refer to a dedicated sample drying device. The sample drying method will vary depending on the nature of the sample and experimental requirements. Common sample drying methods include natural drying, vacuum drying, and freeze drying. In addition to the above methods, there are some other drying methods, such as hot air drying, microwave drying, etc. These methods have their own advantages and disadvantages and are suitable for different types of samples and experimental requirements.

[0003] Deficiencies of existing technology: In the existing transmission electron microscope sample preparation, after selecting a suitable drying method according to the sample properties and experimental requirements, the sample is placed in a container for drying. During the sample drying process, it is often necessary to remove the moisture on the outer surface of the sample. During the process, the sample is dispersed in the moisture that needs to be dried and evaporated. During the drying process, the internal water components or structure of the sample are easily damaged, affecting the sample quality. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sample drying device for preparing transmission electron microscope samples to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sample drying device for preparing transmission electron microscope samples, comprising a rotating bin drying device, the rotating bin drying device comprising a columnar rotating bin, a water vapor discharge hole is provided above the side surface of the columnar rotating bin, a wheel-connected rotating column is welded to the top of the columnar rotating bin, a horizontal conical wheel is welded to the top of the wheel-connected rotating column, a top shell connecting rotating rod is welded to the top of the horizontal conical wheel, a vertical conical wheel is meshed on the back of the horizontal conical wheel, an indirect power rod is welded to the back of the vertical conical wheel, an inner fixed rotating rod is welded to one end of the indirect power rod, a vessel placement window is provided in the middle of the side surface of the columnar rotating bin, and a bottom plate-connected rotating column is welded to the bottom of the vessel placement window The inner side of the bottom of the columnar rotating warehouse is threadedly connected to a warehouse bottom connecting column, the top of the warehouse bottom connecting column is threadedly connected to a container storage chassis, the top of the container storage chassis is welded with an increased friction strip, two heat expansion air pipes are welded below the inner wall of the side of the columnar rotating warehouse, one end of the two heat expansion air pipes are sleeved with a short propulsion rod, one end of the two short propulsion rods are welded with an arc-shaped container fixture, the back of the two arc-shaped container fixtures is provided with a side wind shielding groove, the inner side of the top of the columnar rotating warehouse is welded with a ceiling fan rotating rod, the bottom of the ceiling fan rotating rod is welded with a ceiling fan rotor, and the side of the ceiling fan rotor is welded with three dry pneumatic fan blades, and also includes: a vacuum sealing cabinet, a plunger vacuum extraction device, a vacuum air valve device, and the rotating warehouse The top and bottom rotating shafts of the drying device are connected with a vacuum sealed cabinet, the top of the vacuum sealed cabinet is bolted with a plunger vacuum device, one side of the plunger vacuum device is welded with a vacuum air valve device, the bottom of the vacuum air valve device is welded with a vacuum sealed cabinet, the vacuum sealed cabinet comprises a vacuum sealed cabinet shell, the inner side of the top of the vacuum sealed cabinet shell is bolted with a transverse heat conducting rod, the back pipe of the transverse heat conducting rod is connected with a longitudinal heat conducting rod, the top of the longitudinal heat conducting rod is bolted with a heat absorbing conductive copper sheet, the plunger vacuum device comprises a plunger element mounting base, the top of the plunger element mounting base is welded with a motor connecting base, the top of the motor connecting base is bolted with a motor, the front rotating shaft of the motor is connected to the A starting position motor shaft is connected, a driving track is welded to the side of the starting position motor shaft, an initial rotating turntable is welded to one end of the starting position motor shaft, a central first bearing is sleeved on the front of the initial rotating turntable, a directional triangle block is welded to the side of the central first bearing, a side angle second bearing is welded to one side of the directional triangle block, a directional push-pull device is sleeved on the inner side of the side angle second bearing, a vacuum plunger is welded to one end of the directional push-pull device, a plunger moving air pumping block is sleeved on the side of the vacuum plunger, the vacuum air valve device includes an air valve shell, an exhaust one-way spring is welded to the inner side of the top of the air valve shell, a large spherical connecting block is welded to the bottom of the exhaust one-way spring, a large spherical ball connecting block is welded to the bottom of the large spherical connecting block,The inner wall of the air valve housing is welded with a hole-blocking sealing ring, a large-sized ball-blocking ball is placed on the top of the hole-blocking sealing ring, a fixed connecting strip is welded to the inner wall of the air valve housing, a one-way air-extraction spring is welded to the bottom of the fixed connecting strip, a small-sized ball-blocking ball is welded to the bottom of the one-way air-extraction spring, a small-sized ball-blocking ball is welded to the bottom of the small-sized ball-blocking ball, a hole-blocking sealing sheet is welded to the inner wall of the air valve housing, and a small-sized ball-blocking ball is placed on the top of the hole-blocking sealing sheet.

[0006] Furthermore, the top of the top shell connected to the rotating rod is rotatably connected to the vacuum sealed cabinet shell, one end of the inner fixed rotating rod is rotatably connected to the vacuum sealed cabinet shell, and the bottom rotating shaft of the bottom plate connected to the rotating column is connected to the vacuum sealed cabinet shell.

[0007] Furthermore, the bottom of the vacuum sealed cabinet shell is threadedly connected to four box foot pads, both ends of the front of the vacuum sealed cabinet shell are connected to the sealed cabinet door shafts by rotating shafts, one side of the two sealed cabinet door shafts is connected to the anti-breathable cabinet door by rotating shafts, and the fronts of the two anti-breathable cabinet doors are bolted to the cabinet door handles.

[0008] Furthermore, the bottom bolts of the heat-absorbing and conductive copper sheet are connected to a vacuum-sealed cabinet shell.

[0009] Furthermore, an indirect power rod is sleeved on the bottom end of the transmission crawler.

[0010] Furthermore, a heat-sealing protective shell is welded to the side of the plunger moving air extraction block.

[0011] Furthermore, an external exhaust port is welded on the top of the air valve housing.

[0012] Furthermore, a pipeline on one side of the air valve housing is connected to a plunger-moving air extraction block.

[0013] Technical effects and advantages of the present invention:

[0014] 1. The present invention is provided with a rotating chamber drying device, and utilizes the centrifugal force when the rotating chamber rotates to place the sample in the container near the inner wall of the container, so that the water in the middle of the container is fully exposed, which is conducive to solving the problem that in the existing transmission electron microscope sample preparation, after selecting a suitable drying method according to the sample properties and experimental requirements, the sample is placed in the container for drying. During the sample drying process, it is often necessary to remove only the moisture on the outer surface of the sample. During the process, the sample is dispersed in the moisture to be dried and evaporated, and the internal water component or structure of the sample is easily damaged during drying, thereby affecting the sample quality.

[0015] 2. The present invention is provided with a vacuum sealed cabinet and utilizes the heat pipe in the cabinet to conduct the heat generated by the movement of the motor and the plunger to the vacuum cabinet to dry the sample in the rotary chamber drying device, which is conducive to maximizing resource utilization.

[0016] 3. The present invention is provided with a plunger vacuum device, and utilizes the air pressure generated by the reciprocating motion of the plunger to open the air valve so that both the air inlet and the air outlet are unidirectional, which is beneficial to improving the sealing of the vacuum cabinet, thereby enhancing the sealing effect, and also putting the cabinet in a vacuum state. In the vacuum state, the boiling point of water is lowered, and the water is easier to evaporate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the front cross-sectional structure of the rotary bin drying device of the present invention;

[0019] Figure 3 It is a schematic diagram of the side cross-sectional structure of the rotary bin drying device of the present invention;

[0020] Figure 4 It is a schematic cross-sectional structure diagram of the rotary bin drying device of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the vacuum sealed cabinet of the present invention;

[0022] Figure 6 It is a schematic diagram of the side structure of the vacuum sealing cabinet of the present invention;

[0023] Figure 7 It is a schematic cross-sectional structure diagram of the plunger vacuum pumping device of the present invention;

[0024] Figure 8 It is a schematic cross-sectional side view of the plunger vacuum pumping device of the present invention;

[0025] Fig. 9 It is a schematic diagram of the cross-sectional structure of the vacuum air valve device of the present invention.

[0026] The reference numerals are: 1, rotary bin drying device; 101, columnar rotary bin; 102, water vapor discharge hole; 103, wheel connected to rotary column; 104, horizontal conical wheel; 105, top shell connected to rotating rod; 106, vertical conical wheel; 107, indirect power rod; 108, inner fixed rotating rod; 109, container placement window; 110, bottom plate connected to rotary column; 111, bin bottom connecting column; 112, container storage chassis; 11 3. Increase friction strip; 114. Heat expansion air pipe; 115. Push short rod; 116. Curved vessel fixture; 117. Wind shielding groove on the side; 118. Ceiling fan rotating rod; 119. Ceiling fan rotating head; 120. Drying wind-driven fan blades; 2. Vacuum sealed cabinet; 201. Vacuum sealed cabinet shell; 202. Cabinet foot pad; 203. Sealed cabinet door shaft; 204. Anti-breathable cabinet door; 205. Cabinet door handle; 206. Horizontal heat conduction rod ; 207, longitudinal heat conducting rod; 208, heat absorbing and conducting copper sheet; 3, plunger vacuum device; 301, plunger element mounting base; 302, motor connection base; 303, motor; 304, initial position motor shaft; 305, transmission track; 306, initial rotation turntable; 307, central first bearing; 308, directional triangle block; 309, side angle second bearing; 310, directional push-pull device; 311, vacuum plunger ; 312, plunger moving vacuum block; 313, heat sealing protection shell; 4, vacuum air valve device; 401, air valve shell; 402, external exhaust port; 403, exhaust one-way spring; 404, large spherical connecting block; 405, large plugging ball; 406, plugging hole sealing ring; 407, fixed connecting strip; 408, vacuum one-way spring; 409, small spherical connecting block; 410, small plugging ball; 411, plugging hole sealing sheet. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The sample drying device for transmission electron microscope sample preparation involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0028] Reference Figures 1 to 9 The present invention provides a sample drying device for preparing transmission electron microscope samples, comprising a rotary bin drying device 1, the top and bottom rotating shafts of the rotary bin drying device 1 are connected to a vacuum sealed cabinet 2, the top of the vacuum sealed cabinet 2 is bolted to a plunger vacuum pumping device 3, one side of the plunger vacuum pumping device 3 is welded to a vacuum air valve device 4, and the bottom of the vacuum air valve device 4 is welded to the vacuum sealed cabinet 2.

[0029] In a preferred embodiment, the rotary bin drying device 1 includes a columnar rotary bin 101, a water vapor discharge hole 102 is provided above the side of the columnar rotary bin 101, a wheel-connected rotary column 103 is welded to the top of the columnar rotary bin 101, a horizontal conical wheel 104 is welded to the top of the wheel-connected rotary column 103, a top shell connected rotating rod 105 is welded to the top of the horizontal conical wheel 104, the top of the top shell connected rotating rod 105 is rotatably connected to a vacuum sealed cabinet shell 201, a vertical conical wheel 106 is meshed on the back of the horizontal conical wheel 104, an indirect power rod 107 is welded to the back of the vertical conical wheel 106, an inner fixed rotating rod 108 is welded to one end of the indirect power rod 107, and an inner fixed rotating rod 108 is rotatably connected to the vacuum sealed cabinet shell 201 at one end, a container placement window 109 is provided in the middle of the side of the columnar rotary bin 101, and the bottom of the container placement window 109 is welded with The bottom plate is connected to the rotating column 110, and the bottom rotating shaft of the bottom plate connected to the rotating column 110 is connected to the vacuum sealed cabinet shell 201. The inner side of the bottom of the columnar rotating warehouse 101 is threadedly connected to the warehouse bottom connecting column 111, and the top of the warehouse bottom connecting column 111 is threadedly connected to the container storage bottom plate 112. The top of the container storage bottom plate 112 is welded with an increased friction strip 113. Two heat expansion air pipes 114 are welded below the inner wall of the side of the columnar rotating warehouse 101. The two One end of the thermal expansion air pipe 114 is sleeved with a propulsion short rod 115, one end of the two propulsion short rods 115 are welded with an arc-shaped container fixture 116, the back of the two arc-shaped container fixtures 116 is provided with a side wind shielding groove 117, a ceiling fan rotating rod 118 is welded to the inner side of the top of the columnar rotating bin 101, a ceiling fan rotor 119 is welded to the bottom of the ceiling fan rotating rod 118, and three dry wind-driven fan blades 120 are welded to the side of the ceiling fan rotor 119.

[0030] In this embodiment, it is specifically necessary to supplement that the water vapor discharge hole 102 is used to discharge water vapor in the sample, and the front and back sides of the columnar rotating chamber 101 are provided with container placement windows 109. The heat expansion air pipe 114 is filled with gas that is easily expanded when heated. When the temperature in the rotating chamber drying device 1 increases, the gas in the heat expansion air pipe 114 expands, pushing the short rod 115 to make the side wind shielding groove 117 fix the sample container. At the same time, increasing the friction strip 113 to increase the friction force also plays a role in fixing the container. An arc-shaped protrusion is provided on the top of the back side of the side wind shielding groove 117. When the container rotates, the centrifugal force pushes the sample toward the inner wall of the container. The arc-shaped protrusion of the side wind shielding groove 117 is used to shield the sample near the inner wall from the wind force of the drying pneumatic fan blades 120. The drying pneumatic fan blades 120 rotate as the rotating chamber drying device 1 rotates, and the water vapor evaporated from the rotating chamber drying device 1 is discharged out of the rotating chamber drying device 1 through the water vapor discharge hole 102.

[0031] In a preferred embodiment, the vacuum sealed cabinet 2 includes a vacuum sealed cabinet shell 201, the bottom of which is threadedly connected to four cabinet foot pads 202, both ends of the front of the vacuum sealed cabinet shell 201 are pivotally connected to sealed cabinet door shafts 203, one side of the two sealed cabinet door shafts 203 is pivotally connected to an anti-permeable cabinet door 204, the front of the two anti-permeable cabinet doors 204 are bolted to cabinet door handles 205, the inner side of the top of the vacuum sealed cabinet shell 201 is bolted to a transverse heat conducting rod 206, the back pipe of the transverse heat conducting rod 206 is connected to a longitudinal heat conducting rod 207, the top of the longitudinal heat conducting rod 207 is bolted to a heat absorbing and conducting copper sheet 208, and the bottom of the heat absorbing and conducting copper sheet 208 is bolted to the vacuum sealed cabinet shell 201.

[0032] In this embodiment, it is necessary to specifically add that the heat-absorbing and conductive copper sheet 208 is in the high temperature generated by the movement of the motor and the plunger, and transfers the heat to the transverse heat-conducting rod 206 and the longitudinal heat-conducting rod 207 to increase the temperature inside the vacuum-sealed cabinet 2, so that the moisture in the rotary bin drying device 1 is more easily evaporated when it is in the vacuum state of the vacuum-sealed cabinet 2, thereby promoting drying, and the air-proof cabinet door 204 has good sealing properties for the vacuum-sealed cabinet shell 201, and has no air-permeable gaps to affect the vacuum.

[0033] In a preferred embodiment, the plunger vacuum device 3 includes a plunger element mounting base 301, a motor connection base 302 is welded on the top of the plunger element mounting base 301, a motor 303 is bolted to the top of the motor connection base 302, a front rotating shaft of the motor 303 is connected to a starting position motor shaft 304, a side of the starting position motor shaft 304 is welded with a transmission track 305, the bottom end of the transmission track 305 is sleeved with an indirect power rod 107, and one end of the starting position motor shaft 304 is welded with an initial rotating turntable 30 6. The front of the initial rotating turntable 306 is sleeved with a central first bearing 307, and a directional triangle block 308 is welded to the side of the central first bearing 307. A side angle second bearing 309 is welded to one side of the directional triangle block 308. A directional push-pull device 310 is sleeved on the inner side of the side angle second bearing 309. A vacuum plunger 311 is welded to one end of the directional push-pull device 310. A plunger moving vacuum block 312 is sleeved on the side of the vacuum plunger 311, and a heat sealing protection shell 313 is welded to the side of the plunger moving vacuum block 312.

[0034] In this embodiment, it is necessary to specifically supplement that the initial rotating turntable 306 is sleeved on the inner ring of the central first bearing 307, and the directional triangle block 308 is welded on the outer ring of the central first bearing 307. Similarly, the outer ring of the side angle second bearing 309 is welded with the directional triangle block 308, and the inner ring is sleeved with the directional push-pull device 310. Under the combined action, the directional push-pull device 310 only makes horizontal displacement, and the directional triangle block 308 rotates to adjust the direction. The heat-sealing protective shell 313 seals the internal parts of the plunger vacuum device 3 to prevent the heat in the plunger vacuum device 3 from volatilizing quickly, and the connection between the plunger moving vacuum block 312 and the heat-sealing protective shell 313 is sealed.

[0035] In a preferred embodiment, the vacuum air valve device 4 includes an air valve housing 401, an external exhaust port 402 is welded to the top of the air valve housing 401, an exhaust one-way spring 403 is welded to the inner side of the top of the air valve housing 401, a large spherical connecting block 404 is welded to the bottom of the exhaust one-way spring 403, a large plugging ball 405 is welded to the bottom of the large spherical connecting block 404, a plugging hole sealing ring 406 is welded to the inner wall of the air valve housing 401, and a large plugging ball 405 is placed on the top of the plugging hole sealing ring 406. 5. A fixed connecting strip 407 is welded to the inner wall of the air valve housing 401, a one-way air extraction spring 408 is welded to the bottom of the fixed connecting strip 407, a small spherical connecting block 409 is welded to the bottom of the one-way air extraction spring 408, a small plugging ball 410 is welded to the bottom of the small spherical connecting block 409, a hole plugging sealing sheet 411 is welded to the inner wall of the air valve housing 401, a small plugging ball 410 is placed on the top of the hole plugging sealing sheet 411, and a plunger moving air extraction block 312 is connected to a pipe on one side of the air valve housing 401.

[0036] In this embodiment, it is necessary to specifically add that an exhaust port is provided at the top of the air valve housing 401, and two annular protrusions are provided on the inner wall of the air valve housing 401. A hole-blocking sealing ring 406 is welded to the upper protrusion, and a hole-blocking sealing sheet 411 is welded to the lower protrusion. The large-sized blocking ball 405 and the hole-blocking sealing ring 406 block the pipe opening formed by the upper protrusion, and the small-sized blocking ball 410 and the hole-blocking sealing sheet 411 block the pipe opening formed by the lower protrusion. The hole-blocking sealing ring 406 is provided with a vent hole blocked by the large-sized blocking ball 405, and the hole-blocking sealing sheet 411 is provided with a vent hole blocked by the small-sized blocking ball 410. Blockage. When the plunger is pulled back, negative pressure is formed in the vacuum air valve device 4, and the negative pressure sucks up the small blocking ball 410, opens the vent hole of the blocking sealing plate 411, and allows the plunger to further extract the air in the vacuum sealed cabinet 2. When the plunger is pushed forward, positive pressure is formed in the vacuum air valve device 4. On the one hand, the small blocking ball 410 is squeezed downward to further block the vent hole of the blocking sealing plate 411, and on the other hand, the large blocking ball 405 is pushed to open the vent hole of the blocking sealing ring 406, and the air is discharged from the vacuum air valve device 4, and the reciprocating action is performed until a vacuum is formed in the vacuum sealed cabinet 2.

[0037] The working principle of the present invention is as follows: the motor 303 works to rotate the starting position drive shaft 304, the indirect power rod 107 rotates at the same speed under the action of the transmission crawler 305, one end of the indirect power rod 107 is welded with a vertical conical wheel 106, the vertical conical wheel 106 rotates together, the vertical conical wheel 106 meshes with the horizontal conical wheel 104, so that the horizontal conical wheel 104 rotates, and further rotates the columnar rotating bin 101, the top shell is connected to the rotating rod 105 and the bottom plate is connected to the rotating column 110, which are respectively rotatably connected to the inner sides of the top and bottom of the vacuum sealing cabinet shell 201, so that the columnar rotating bin 101 rotates in the vacuum sealing cabinet 2, and when the vacuum plunger 311 is pulled back, the vacuum air valve device 4 forms a negative pressure, the negative pressure sucks up the small plugging ball 410, opens the vent hole of the plugging sealing plate 411, and allows the plunger to further extract the air in the vacuum sealed cabinet 2. When the vacuum plunger 311 is pushed forward, a positive pressure is formed in the vacuum air valve device 4. On the one hand, the small plugging ball 410 is squeezed downward to further block the vent hole of the plugging sealing plate 411, and on the other hand, the large plugging ball 405 is pushed to open the vent hole of the plugging sealing ring 406 to exhaust the air from the vacuum air valve device 4, and the reciprocating motion is performed until a vacuum is formed in the vacuum sealed cabinet 2. In this process, the air pressure generated by the reciprocating motion of the plunger is used to open the air valve so that both the inlet and outlet are unidirectional, which is beneficial to improve the sealing of the vacuum cabinet and thus enhance the The sealing effect is achieved, and the cabinet is in a vacuum state. The boiling point of water is lowered in the vacuum state, and the water is easier to evaporate. A large amount of heat is generated when the motor 303 and the vacuum plunger 311 move. The heat-absorbing and conductive copper sheet 208 transfers the heat to the horizontal heat-conducting rod 206 and the longitudinal heat-conducting rod 207, so that the temperature inside the vacuum sealed cabinet shell 201 rises, and the drying is accelerated. The sample vessel is placed on the top of the vessel storage chassis 112, and the temperature in 210 rises, so that the volume of the heat-expanding gas in the heat-expanding air pipe 114 increases, and the expansion squeezes and pushes the short rod 115, so that the side wind shielding groove 117 fixes the vessel to prevent the sample vessel from being separated from the vessel storage chassis 1 under the action of centrifugal force when the columnar rotating warehouse 101 is installed. 12. When the columnar rotating chamber 101 rotates, the drying pneumatic fan blades 120 rotate accordingly, and absorb the water vapor evaporated from the sample and discharge it out of the rotating chamber drying device 1 from the water vapor discharge hole 102. This process utilizes the centrifugal force when the rotating chamber rotates to place the sample in the container near the inner wall of the container, and fully expose the water in the middle of the container. This is conducive to solving the problem that in the existing transmission electron microscope sample preparation, after selecting a suitable drying method according to the sample properties and experimental requirements, the sample is placed in the container for drying. During the sample drying process, it is often only necessary to remove the moisture on the outer surface of the sample. During the process, the sample is dispersed in the moisture to be dried and evaporated. During the drying process, the internal water components or structure of the sample are easily damaged, affecting the sample quality.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sample drying device for preparing transmission electron microscope samples, comprising a rotary chamber drying device (1), characterized in that: The rotary bin drying device (1) comprises a columnar rotary bin (101), a water vapor discharge hole (102) is arranged above the side of the columnar rotary bin (101), a wheel-connected rotary column (103) is welded to the top of the columnar rotary bin (101), a horizontal conical wheel (104) is welded to the top of the wheel-connected rotary column (103), a top shell connecting rotating rod (105) is welded to the top of the horizontal conical wheel (104), a vertical conical wheel (106) is meshed on the back of the horizontal conical wheel (104), an indirect power rod (107) is welded to the back of the vertical conical wheel (106), an inner fixed rotating rod (108) is welded to one end of the indirect power rod (107), and the columnar rotary bin (101) is welded to the top of the wheel-connected rotary column (103). ) is provided with a container placement window (109) in the middle of the side, a bottom plate-connected rotating column (110) is welded to the bottom of the container placement window (109), a container bottom connecting column (111) is threadedly connected to the inner side of the bottom of the columnar rotating bin (101), a container storage bottom plate (112) is threadedly connected to the top of the container bottom connecting column (111), a friction increasing strip (113) is welded to the top of the container storage bottom plate (112), two heat expansion air pipes (114) are welded below the inner wall of the side of the columnar rotating bin (101), one end of each of the two heat expansion air pipes (114) is sleeved with a short propulsion rod (115), and one end of each of the two short propulsion rods (115) is welded with an arc container fixing device (116) The back of the two arc-shaped container fixtures (116) is provided with a side wind shielding groove (117), the inner side of the top of the columnar rotary bin (101) is welded with a ceiling fan rotating rod (118), the bottom of the ceiling fan rotating rod (118) is welded with a ceiling fan rotating head (119), and the side of the ceiling fan rotating head (119) is welded with three drying wind-driven fan blades (120), and also includes: a vacuum sealing cabinet (2), a plunger vacuum pumping device (3), and a vacuum air valve device (4), the top and bottom rotating shafts of the rotary bin drying device (1) are connected to the vacuum sealing cabinet (2), the top of the vacuum sealing cabinet (2) is bolted to the plunger vacuum pumping device (3), and one side of the plunger vacuum pumping device (3) is welded with a vacuum air valve device. The vacuum valve device (4) is welded with a vacuum sealed cabinet (2) at the bottom, the vacuum sealed cabinet (2) comprises a vacuum sealed cabinet shell (201), a transverse heat conducting rod (206) is bolted to the inner side of the top of the vacuum sealed cabinet shell (201), a longitudinal heat conducting rod (207) is connected to the back pipe of the transverse heat conducting rod (206), a heat absorbing and conducting copper sheet (208) is bolted to the top of the longitudinal heat conducting rod (207), the plunger vacuum device (3) comprises a plunger element mounting base plate (301), a motor connecting base (302) is welded to the top of the plunger element mounting base plate (301), a motor connecting base (303) is bolted to the top of the motor connecting base (302),The front rotating shaft of the motor (303) is connected to the initial position motor shaft (304), the side of the initial position motor shaft (304) is welded with a transmission crawler (305), one end of the initial position motor shaft (304) is welded with an initial rotating turntable (306), the front of the initial rotating turntable (306) is sleeved with a central first bearing (307), the side of the central first bearing (307) is welded with a directional triangle block (308), and the directional triangle block A side angle second bearing (309) is welded to one side of the (308), a directional push-pull device (310) is sleeved on the inner side of the side angle second bearing (309), a vacuum plunger (311) is welded to one end of the directional push-pull device (310), a plunger moving air pumping block (312) is sleeved on the side of the vacuum plunger (311), and the vacuum air valve device (4) includes an air valve housing (401), and the inner side of the top of the air valve housing (401) is welded The exhaust one-way spring (403) is connected to the exhaust one-way spring (403), the bottom of which is welded with a large spherical connecting block (404), the bottom of which is welded with a large plugging ball (405), the inner wall of the air valve housing (401) is welded with a hole-blocking sealing ring (406), the top of which is placed with a large plugging ball (405), and the inner wall of the air valve housing (401) is welded with a fixed connecting strip. (407), a one-way air extraction spring (408) is welded to the bottom of the fixed connecting strip (407), a small ball connecting block (409) is welded to the bottom of the one-way air extraction spring (408), a small ball plugging ball (410) is welded to the bottom of the small ball connecting block (409), a hole plugging sealing sheet (411) is welded to the inner wall of the air valve housing (401), and a small ball plugging ball (410) is placed on the top of the hole plugging sealing sheet (411).

2. The sample drying device for preparing transmission electron microscope samples according to claim 1, characterized in that: The top of the top shell connected to the rotating rod (105) is rotatably connected to the vacuum sealed cabinet shell (201), one end of the inner fixed rotating rod (108) is rotatably connected to the vacuum sealed cabinet shell (201), and the bottom rotating shaft of the bottom plate connected to the rotating column (110) is connected to the vacuum sealed cabinet shell (201).

3. The sample drying device for preparing transmission electron microscope samples according to claim 1, characterized in that: The bottom of the vacuum sealed cabinet shell (201) is threadedly connected to four box foot pads (202), both ends of the front of the vacuum sealed cabinet shell (201) are pivotally connected to sealed cabinet door shafts (203), one side of the two sealed cabinet door shafts (203) is pivotally connected to an anti-permeable cabinet door (204), and the front of the two anti-permeable cabinet doors (204) are bolted to cabinet door handles (205).

4. The sample drying device for preparing transmission electron microscope samples according to claim 1, characterized in that: The bottom of the heat-absorbing and conducting copper sheet (208) is bolted to a vacuum-sealed cabinet shell (201).

5. The sample drying device for preparing transmission electron microscope samples according to claim 1, characterized in that: The bottom end of the transmission crawler belt (305) is sleeved with an indirect power rod (107).

6. The sample drying device for preparing transmission electron microscope samples according to claim 1, characterized in that: A heat-sealing protective shell (313) is welded to the side of the plunger moving air extraction block (312).

7. The sample drying device for preparing transmission electron microscope samples according to claim 1, characterized in that: An external exhaust port (402) is welded to the top of the air valve housing (401).

8. The sample drying device for preparing transmission electron microscope samples according to claim 1, characterized in that: A pipeline on one side of the gas valve housing (401) is connected to a plunger-moving air extraction block (312).

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