CN-121974047-A - Sealing device for lunar soil vacuumizing

Abstract

The invention belongs to the technical field of deep space exploration and extraterrestrial sample processing, and particularly relates to a sealing device for lunar soil vacuumizing, which comprises a main structure, a vacuum box and a plurality of groups of linkage sealing mechanisms, wherein the vacuum box is provided with a cover plate with a through hole, the side wall of the vacuum box is provided with an air suction interface, the linkage sealing mechanisms are arranged in the through hole of the cover plate in a sliding way, and the linkage sealing mechanisms comprise a connecting rod, screws, nuts, plugs and sample clamps arranged on samples from top to bottom.

Inventors

• HU QINHONG
• LIU ZHENGHAO
• QIAO HONGGUO
• BAO GUOQING
• ZHANG TAO

Assignees

• 中国石油大学(华东)
• 正大中子(苏州)科技有限公司

Dates

Publication Date

20260505

Application Date

20260311

Claims (10)

1. 1. The sealing device for lunar soil vacuumizing is characterized in that the main body structure comprises a vacuum box and a plurality of groups of linkage sealing mechanisms connected with the vacuum box, and the linkage sealing mechanisms are arranged on the vacuum box in a sliding penetrating mode.
2. 2. The sealing device for lunar soil vacuumizing according to claim 1, wherein the linkage sealing mechanism at least comprises a connecting rod and a sample clamp which are connected through a plug.
3. 3. The sealing device for lunar soil vacuumizing according to claim 2, wherein the lower end of the connecting rod is connected with the upper end of the plug through a screw and a nut, the lower end of the plug is connected with the sample clamp, and the top of the sample clamp is provided with a clamping interface.
4. 4. The sealing device for lunar soil vacuumizing according to claim 3, wherein the connecting rod is of a hollow tubular structure, two symmetrical trimming planes are arranged on the outer wall of the upper end, a through connecting perforation is arranged at the lower end, a connecting through hole matched with the connecting perforation is arranged at the upper end of the plug, an outwards convex polygonal prismatic table is arranged in the middle, and a stepped clamping end is arranged at the lower end.
5. 5. The sealing device for lunar soil vacuumizing according to claim 4, wherein the upper end of the plug is inserted into the inner hole of the lower end of the connecting rod, the screw is aligned with the connecting through hole through the aligned connecting through hole, the nut locks the screw at the other side, the clamping end of the plug is inserted into and fixed in the clamping interface of the sample holder, the connecting rod is fixedly connected with the plug, the plug is connected with the sample holder, and the external operating force is transmitted downwards without loss.
6. 6. Sealing device for lunar soil evacuation according to any of the claims 1-5, characterised in that the vacuum box is provided with a cover plate for holding the sample to be evacuated, which cover plate is detachably closed on top of the vacuum box.
7. 7. The sealing device for lunar soil vacuumizing according to claim 6, wherein a plurality of grooves for limiting the sample clamp are formed in the bottom surface of the vacuum box, air extraction interfaces are formed in the side walls of the grooves, the grooves comprise a bone shape and a dumbbell shape, a plurality of through holes penetrate through the cover plate, and the through holes correspond to the grooves in number and positions one by one.
8. 8. The sealing device for lunar soil vacuumizing according to claim 7, wherein the linkage sealing mechanism is slidably arranged on the cover plate.
9. 9. The sealing device for lunar soil vacuumizing according to claim 8, wherein a plurality of mounting holes are formed in the periphery of the cover plate, threaded holes corresponding to the mounting holes are formed in the periphery of the top of the vacuum box, the mounting holes and the threaded holes are connected through fasteners, and a sealing ring is arranged on the surrounding edge of the end face, in contact with the cover plate, of the top of the vacuum box.
10. 10. The sealing device for lunar soil vacuuming as claimed in claim 9, wherein, in use: Firstly, placing a slice filled with lunar soil samples into a sample holder and placing the slice into a sample groove of a main container; Then, the cover plate is covered and locked, and the linkage sealing mechanism is kept in an undepressed open state; Then, uniformly vacuumizing the accommodating cavity of the main container through the air extraction interface; Finally, under the state of maintaining vacuum, the connecting rod is operated from the outside to move downwards to drive the plug to press down to close the opening of the sample clamp, and in-situ and independent physical sealing is carried out on a plurality of lunar soil samples under the vacuum environment.

Description

Sealing device for lunar soil vacuumizing Technical Field The invention belongs to the technical field of deep space exploration and extraterrestrial celestial body sample treatment, and particularly relates to a sealing device for lunar soil vacuumizing, which is used for in-situ sealing when a lunar soil sample is vacuumized. Background With the continuous development of human deep space exploration technology, obtaining soil and rock samples (such as lunar soil) of extraterrestrial celestial bodies such as moon and Mars has become an important link in planetary science research. Lunar soil samples are brought back to the earth in ultra-high vacuum, anhydrous, anaerobic and strongly radiating environments on the lunar surface for a long time, and in order to maintain the original physical and chemical properties of the lunar soil samples and prevent oxidation, deliquescence or pollution of oxygen, moisture and particles in the earth atmosphere, the lunar soil samples must be stored, segmented and sampled (e.g. made into flakes for microscopic analysis) under extremely strict vacuum or inert gas protection environments. Currently, scientific researchers often rely on large vacuum glove boxes or complex vacuum operating cabins when handling precious extra-ground samples such as lunar soil. For example, china patent 202423169307.2 discloses an adjustable double-station vacuum glove box, which comprises a support frame, a glove box body is fixedly arranged at the top end of the support frame, an adjusting component is arranged inside the glove box body, two glove clamping components are arranged on the outer wall of the glove box body and used for clamping and fixing the glove, the adjusting component comprises two placing discs, rotating shafts are fixedly arranged at the bottom ends of the two placing discs, the two rotating shafts are rotatably connected with the bottom ends of the inner wall of the glove box body, the glove clamping components comprise two glove mounting drums, an outer gear ring and a rotating disc are rotatably arranged on the outer wall of each glove mounting drum, the outer gear ring and the rotating disc are fixedly connected and used for driving the rotating disc to rotate, a fixed disc is fixedly arranged on the outer wall of each glove mounting drum, a group of limiting sliding grooves are formed in a penetrating manner, arc clamping plates are respectively arranged on the inner wall of one group of each limiting sliding groove, the group of limiting sliding grooves are respectively connected with the outer gear ring, the two output sliding grooves are respectively movably connected with one side of each other through one group of sliding rod, an arc-shaped sliding rod is movably connected with one side of each other, and one group of sliding rod is fixedly connected with one side of sliding rod is movably connected with one side of the sliding rod respectively, two sliding rods are respectively arranged on the sliding rod respectively, and one side of the sliding rod is fixedly connected with the sliding rod is in a sliding rod, one side of the outer wall of the glove box body is provided with a sealing box door. The utility model discloses a full transparent arm vacuum operation box of China patent 202020029059.4, including the baffle, the baffle both sides are provided with operation box and transition storehouse, be provided with the through-hole that is used for intercommunication operation box and transition storehouse on the baffle, be provided with the sealing door that is used for closing the through-hole on the baffle, be provided with the arm in the operation box, be provided with the support in the transition storehouse, the vertical supporting seat that has alternate in support upper end, be provided with the sliding plate of horizontal slip in the operation box, the sliding plate upper end is provided with the support thing board, the support thing board is provided with the fork board that drives the supporting seat to descend in transition storehouse one side, the supporting seat includes backup pad and the driving plate that the interval set up, backup pad and driving plate upper end alternate and stretch out the support upper end, backup pad and driving plate lower extreme are connected with the bottom plate, be provided with the spring between bottom plate and the support bottom, the transition storehouse is provided with the baffle on the lateral wall opposite of fork board, the fork board lower extreme is provided with the oblique angle in supporting seat one side, the horizontal screw rod and the guide pillar that pass the sliding plate in the operation box, the screw rod is connected with the motor drive, screw thread connection with the sliding plate, operation box and transition storehouse are made by transparent material. However, during actual laboratory operations and sample circulation, there are the following significant drawbacks: In batch processing