CN-117799941-B - Transfer device of air sensitive sample

CN117799941BCN 117799941 BCN117799941 BCN 117799941BCN-117799941-B

Abstract

The invention discloses a transfer device for an air-sensitive sample, which comprises a transfer rod, a transfer cavity, a first sealing valve and a second sealing valve, wherein the first sealing valve is arranged on the side wall of a target cavity, the second sealing valve is fixed at the front end of the transfer cavity, the first sealing valve and the second sealing valve are detachably connected, the front end of the transfer rod penetrates into the transfer cavity from the rear end of the transfer cavity and can sequentially penetrate through the second sealing valve and the first sealing valve from the transfer cavity to enter the target cavity, the transfer rod comprises a first push rod and a second push rod, a sample holder is fixed at the front end of the first push rod, the rear end of the first push rod is detachably connected with the front end of the second push rod, the first push rod and the second push rod can be connected or separated through controlling the second push rod, the sample holder is positioned in the transfer cavity, and at least part of the first push rod is positioned in the transfer cavity. The transfer device has the advantages of being simple in transfer operation, high in transfer efficiency and the like, and the risk of exposing the sample to air in the transfer process can be effectively reduced.

Inventors

Gong Danyuan
LI TAO
LI XIAO
LIU HANG
WANG ZHIBIN
YANG RUNXIAO

Assignees

惠然科技有限公司

Dates

Publication Date: 20260508
Application Date: 20231229

Claims (13)

1. The transfer device for the air-sensitive sample is characterized by comprising a transfer rod, a transfer cavity, a first sealing valve and a second sealing valve; The first sealing valve is arranged on the side wall of the target cavity, the second sealing valve is fixed at the front end of the transferring cavity, the first sealing valve and the second sealing valve are detachably connected, and the front end of the transferring rod penetrates into the transferring cavity from the rear end of the transferring cavity and can sequentially pass through the second sealing valve and the first sealing valve from the transferring cavity to enter the target cavity; The transfer rod comprises a first push rod and a second push rod, the front end of the first push rod is fixedly provided with a sample holder, the sample holder is used for bearing a sample, the rear end of the first push rod is detachably connected with the front end of the second push rod, the first push rod and the second push rod can be connected or separated by controlling the second push rod, the sample holder is positioned in the transfer cavity, and at least part of the first push rod is positioned in the transfer cavity; the transfer cavity and the target cavity are communicated when the first sealing valve and the second sealing valve are assembled and connected and are both opened, and the transfer cavity and the target cavity are separated when the first sealing valve and the second sealing valve are both closed and detached; the rear end of the first push rod is connected with the front end of the second push rod through a thread structure or a turnbuckle structure; when the rear end of the first push rod is connected with the front end of the second push rod through a thread structure, a threaded hole is formed in the rear end of the first push rod, and an external thread matched with the threaded hole is formed in the front end of the second push rod; the rear end of the threaded hole is provided with a horn-shaped guide hole, and the guide hole is used for guiding when the front end of the second push rod is inserted into the threaded hole.
2. The air-sensitive sample transfer device according to claim 1, wherein a positioning hole is formed at a front end of the threaded hole, and a positioning protrusion engaged with the positioning hole is axially extended at a front end of the second push rod.
3. The air-sensitive sample transfer device according to claim 1, wherein a vent hole is provided on the first push rod, one end of the vent hole is communicated with the threaded hole, and the other end of the vent hole extends to the outer peripheral surface of the first push rod.
4. The air-sensitive sample transferring device according to claim 1, wherein a push rod housing is sleeved on the second push rod, the second push rod can axially move in the push rod housing, the front end of the push rod housing is detachably connected with the rear end of the transferring cavity, a guide groove is formed in the push rod housing, a pull button is fixed on the second push rod, and the pull button penetrates out of the push rod housing from the guide groove; The guide groove comprises a head groove, a linear groove and a tail groove, wherein the head groove is positioned at the front side of the push rod shell and extends along the circumferential direction of the push rod shell, the tail groove is positioned at the rear side of the push rod shell and extends along the circumferential direction of the push rod shell, the linear groove extends along the axial direction of the push rod shell, the front end of the linear groove is communicated with the first end of the head groove, the rear end of the linear groove is communicated with the first end of the tail groove, so that the pull button is positioned at the first end of the head groove, the linear groove and the first end of the tail groove, the external thread of the front end of the second push rod is screwed and fixed with the threaded hole, and the external thread of the front end of the second push rod is separated from the threaded hole when the pull button is positioned at the second end of the head groove and the second end of the tail groove.
5. The transfer device for air-sensitive samples according to claim 4, wherein a transfer post is arranged at the rear end of the second push rod, the pull button is fixed on the transfer post, the transfer post and the second push rod are arranged on the same axis, a mounting hole is formed in the axis of the transfer post, and the transfer post and the second push rod are fixedly connected through the mounting hole and a screw/bolt.
6. The transfer device of an air-sensitive sample according to claim 4, wherein an adapter sleeve is arranged at the rear end of the transfer cavity, a through hole is formed in the adapter sleeve, the second push rod can penetrate through the through hole to be connected with the first push rod, the periphery of the adapter sleeve is fixedly connected with the transfer cavity through an adapter pressing plate, the adapter sleeve can axially rotate relative to the transfer cavity, and the adapter sleeve is connected with the push rod shell through a thread structure.
7. The air-sensitive sample transfer device according to claim 1, wherein positioning edges extend from two sides of the sample holder, and a first elastic sheet is disposed in the transfer cavity, so that when the sample holder is located in the transfer cavity, the first elastic sheet compresses and fixes the positioning edges along a direction perpendicular to a moving direction of the sample holder.
8. The air sensitive sample transport device of claim 7, further comprising a sample stage; the sample platform is used for setting up in the target cavity, the both sides of sample platform are equipped with respectively and press the seat, each press and be equipped with the second shell fragment on the seat, make the sample hold in the palm when moving to on the sample platform, the second shell fragment is along the perpendicular to the direction that the sample held in the palm moved compresses tightly fixedly the location reason.
9. The air-sensitive sample transfer apparatus of claim 8, wherein the front end of the sample stage is provided with a limit protrusion for limiting the movement of the sample holder onto the sample stage, and the rear end of the sample stage is formed with a guide slope.
10. The air-sensitive sample transfer apparatus according to claim 1, wherein a nail table hole is formed in an upper end face of the sample holder, the nail table hole is used for inserting and mounting a nail table, a top wire hole is formed in the sample holder at a side portion of the nail table hole, and the top wire hole is communicated with the nail table hole and used for fixing the nail table.
11. The air-sensitive sample transfer device of claim 1, wherein the rear end of the first sealing valve is connected to the front end of the second sealing valve by a first quick-connect flange, and the rear end of the second sealing valve is connected to the front end of the transfer chamber by a second quick-connect flange; And a sealing ring is arranged between the transfer rod and the transfer cavity.
12. The transport device for air-sensitive samples according to any one of claims 1 to 11, further comprising a display unit; the display unit is used for displaying the state of the first sealing valve and/or the second sealing valve.
13. The transfer device for air-sensitive samples according to any one of claims 1 to 11, further comprising a pressure detection unit; the pressure detection unit is used for detecting the air pressure in the transferring cavity.

Description

Transfer device of air sensitive sample Technical Field The invention belongs to the technical field of sealed transportation, and particularly relates to a transportation device for an air-sensitive sample. Background When the air sensitive sample is subjected to characterization analysis after preparation, the sample is required to be transported from the preparation equipment to the sample characterization equipment, and the sample is required to be free of contact with air, so that the damage to the sample caused by gas components such as oxygen in the air and the like is avoided, and the conclusion of test analysis is influenced, so that the whole transportation process is required to be carried out in an inert gas environment or a vacuum environment, for example, the sample preparation is completed in a glove box in a nitrogen environment, the sample observation analysis is completed in an electron microscope vacuum cavity, and the sample is required to be transported from the glove box to the electron microscope vacuum cavity. At present, the transportation of air-sensitive samples is mainly realized by adopting a transportation box, the preparation work of the samples is finished in a glove box, then the samples are placed in the transportation box with an airtight function, the transportation box is closed, the transportation box is placed in an electron microscope vacuum cavity through conventional operation, nitrogen is filled into the electron microscope vacuum cavity after the electron microscope vacuum cavity is closed, and finally the transportation box is opened through electric control or mechanical control, so that the transportation of the samples between the glove box and the electron microscope vacuum cavity is realized. However, the manner of transporting the cassette has problems of complex operation, low transport efficiency, and risk of air exposure during sample transport. Disclosure of Invention In view of the above, the present invention discloses a transfer device for air-sensitive samples, which overcomes or at least partially solves the above-mentioned problems. In order to achieve the above purpose, the present invention adopts the following technical scheme: The invention provides a transfer device for an air-sensitive sample, which comprises a transfer rod, a transfer cavity, a first sealing valve and a second sealing valve, wherein the transfer rod is connected with the transfer cavity; The first sealing valve is arranged on the side wall of the target cavity, the second sealing valve is fixed at the front end of the transferring cavity, the first sealing valve and the second sealing valve are detachably connected, and the front end of the transferring rod penetrates into the transferring cavity from the rear end of the transferring cavity and can sequentially pass through the second sealing valve and the first sealing valve from the transferring cavity to enter the target cavity; The transfer rod comprises a first push rod and a second push rod, a sample support is fixed at the front end of the first push rod and used for bearing a sample, the rear end of the first push rod is detachably connected with the front end of the second push rod, the first push rod and the second push rod can be connected or separated by controlling the second push rod, the sample support is located in the transfer cavity, and at least part of the first push rod is located in the transfer cavity. Further, the rear end of the first push rod is connected with the front end of the second push rod through a threaded structure or a turnbuckle structure. Further, when the rear end of the first push rod is connected with the front end of the second push rod through a thread structure, a threaded hole is formed in the rear end of the first push rod, and an external thread matched with the threaded hole is formed in the front end of the second push rod; the rear end of the threaded hole is provided with a horn-shaped guide hole, and the guide hole is used for guiding when the front end of the second push rod is inserted into the threaded hole. Further, a positioning hole is formed at the front end of the threaded hole, and a positioning protrusion matched with the positioning hole is axially extended at the front end of the second push rod. Further, a vent hole is formed in the first push rod, one end of the vent hole is communicated with the threaded hole, and the other end of the vent hole extends to the outer peripheral surface of the first push rod. Further, a push rod shell is sleeved on the second push rod, the second push rod can axially move in the push rod shell, the front end of the push rod shell is detachably connected with the rear end of the transfer cavity, a guide groove is formed in the push rod shell, a pull button is fixed on the second push rod, and the pull button penetrates out of the push rod shell through the guide groove; The guide groove comprises a head groove, a linear groove