CN117799941A - Transfer device of air sensitive sample - Google Patents

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 transfer rod is connected with the transfer cavity through a first connecting rod; 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 penetrate 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 fixed with a sample support, 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 support is located in a transfer cavity, and at least part of the first push rod is located 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.

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 from 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, sample preparation is completed in a glove box in a nitrogen environment, sample observation and analysis are completed in an electron microscope vacuum cavity, and the sample needs 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 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.

Further, the rear end of the second push rod is provided with a switching column, the pull button is fixed on the switching column, the switching column and the second push rod are arranged on the same axis, a mounting hole is formed in the axis of the switching column, and the switching column and the second push rod are fixedly connected through the mounting hole and a screw/bolt.

Further, the rear end of the transferring cavity is provided with an adapter sleeve, the adapter sleeve is provided with a through hole, the second push rod can penetrate through the through hole and is connected with the first push rod, the periphery of the adapter sleeve is fixedly connected with the transferring cavity through an adapter pressing plate, the adapter sleeve can axially rotate relative to the transferring cavity, and the adapter sleeve is connected with the push rod shell through a threaded structure.

Further, the two sides of the sample support are extended to form positioning edges, and a first elastic sheet is arranged in the transfer cavity, so that when the sample support is positioned in the transfer cavity, the first elastic sheet compresses and fixes the positioning edges along the direction perpendicular to the movement direction of the sample support.

Further, the device also comprises 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.

Further, the front end of the sample stage is provided with a limiting protrusion, the limiting protrusion is used for limiting the sample support when moving to the sample stage, and the rear end of the sample stage is provided with a guiding inclined plane.

Further, a nail table hole is formed in the upper end face of the sample support, the nail table hole is used for inserting and installing a nail table, a top thread hole is formed in the sample support at the side part of the nail table hole, and the top thread hole is communicated with the nail table hole and used for fixing the nail table.

Further, the rear end of the first sealing valve is connected with the front end of the second sealing valve through a first quick-connection flange, and the rear end of the second sealing valve is connected with the front end of the transferring cavity through a second quick-connection flange;

and a sealing ring is arranged between the transfer rod and the transfer cavity.

Further, the display unit is also included;

the display unit is used for displaying the state of the first sealing valve and/or the second sealing valve.

Further, the device also comprises a pressure detection unit;

the pressure detection unit is used for detecting the air pressure in the transferring cavity.

The invention has the advantages and beneficial effects that:

according to the transfer device for the air-sensitive samples, the transfer rod and the transfer cavity are arranged, the first sealing valve is arranged on the target cavity, the second sealing valve is arranged on the transfer cavity, and the first sealing valve and the second sealing valve are detachably connected, so that the transfer cavity can be communicated with the target cavity through the first sealing valve and the second sealing valve, and further a sample holder at the front end of the transfer rod can bear the movement of the samples between the transfer cavity and the target cavity, and the transfer of the samples between the transfer cavity and the target cavity is realized; in addition, the transfer rod adopts a split detachable structure, so that the transfer cavity can directly enter the glove box for sample loading, the loading efficiency of the samples is improved, the loading process is simpler and more convenient, the samples are effectively prevented from being contacted with air, and the samples can be prevented from collision in the loading process; the transfer device for the air-sensitive samples has the advantages of being simple in transfer operation, high in transfer efficiency and the like, and the risk of exposing the samples to air in the transfer process can be effectively reduced.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a front view of a transfer device for air sensitive samples in one embodiment of the invention;

FIG. 2 is a top view of a transfer device for air sensitive samples in one embodiment of the invention;

FIG. 3 is a cross-sectional view of the transfer device of the air-sensitive sample of FIG. 2 along line A-A;

FIG. 4 is a diagram illustrating the connection of a target chamber to a first sealing valve in accordance with one embodiment of the present invention;

FIG. 5 is a perspective view of a second sealing valve according to an embodiment of the present invention;

FIG. 6 is a top view of a transfer chamber according to one embodiment of the invention;

FIG. 7 is a cross-sectional view of the transfer chamber of FIG. 6 taken along line B-B;

FIG. 8 is a block diagram of the assembly of a second pushrod and pushrod housing according to an embodiment of the invention;

FIG. 9 is a route diagram of a knob moving within a guide channel in one embodiment of the invention;

FIG. 10 is a perspective view showing a structure of a second push rod and pull button according to an embodiment of the present invention;

FIG. 11 is a front view of a second push rod and pull button connection structure according to an embodiment of the present invention;

FIG. 12 is a cross-sectional view of the second push rod and pull button connection structure of FIG. 11 taken along line C-C;

FIG. 13 is a perspective view of a sample holder according to an embodiment of the present invention;

FIG. 14 is a top view of a sample holder according to one embodiment of the invention;

fig. 15 is a perspective view of a sample stage according to an embodiment of the present invention.

In the figure: 1. a transfer rod; 1-1, a first push rod; 1-2, a second push rod; 2. a transfer chamber; 3. a first sealing valve; 4. a second sealing valve; 5. a target cavity; 6. a sample holder; 7. a threaded hole; 8. an external thread; 9. a guide hole; 10. positioning holes; 11. positioning the bulge; 12. a vent hole; 13. a push rod housing; 14. a guide groove; 14-1, head grooves; 14-2, a linear groove; 14-3, tail grooves; 15. pulling a button; 16. a transfer column; 17. a screw; 18. an adapter sleeve; 19. a switching pressing plate; 20. positioning edges; 21. a first elastic sheet; 22. a sample stage; 23. pressing a base; 24. a second spring plate; 25. a limit protrusion; 26. a guide slope; 27. a nail table hole; 28. a top thread hole; 29. a first quick-connect flange; 30. the second quick-connection flange; 31. a seal ring; 32. a display unit; 33. a pressure detection unit; 34. a sealing plate; 35. a spring plate base; 36. an adapter; 37. and a fixing hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

For the sake of clarity in describing the structure of the air-sensitive sample transfer device of the present invention, let "front" or "front" in the following embodiments be the left end or left side of fig. 1, and "rear" or "rear" in the embodiments be the right end or right side of fig. 1.

The following describes in detail the technical solutions provided by the embodiments of the present invention with reference to the accompanying drawings.

In one embodiment of the invention, an air-sensitive sample transferring device is disclosed, and as shown in fig. 1 to 3, the air-sensitive sample transferring device comprises a transferring rod 1, a transferring cavity 2, a first sealing valve 3 and a second sealing valve 4.

Specifically, the first sealing valve 3 is configured to be disposed on a side wall of the target cavity 5, that is, the first sealing valve 3 is in communication with the target cavity 5, and can enter the target cavity 5 through the first sealing valve 3; the target cavity can be an electron microscope main cavity or a micro-nano laser processing cavity. The second sealing valve 4 is fixed at the front end of the transferring cavity 2, namely the second sealing valve 4 is communicated with the transferring cavity 2, the first sealing valve 3 and the second sealing valve 4 are detachably connected, and the first sealing valve 3 and the second sealing valve 4 can be assembled, connected or detached and separated according to the requirement, so that the transferring cavity 2 and the target cavity 5 are communicated when the first sealing valve 3 and the second sealing valve 4 are assembled, connected and opened, and the transferring cavity 2 and the target cavity 5 are separated when the first sealing valve 3 and the second sealing valve 4 are closed and detached and separated; the front end of the transfer rod 1 penetrates into the transfer cavity 2 from the rear end of the transfer cavity 2 and can axially move in the transfer cavity 2, and when the first sealing valve 3 and the second sealing valve 4 are assembled and connected and are in an open state, the front end of the transfer rod 1 can sequentially penetrate through the second sealing valve 4 and the first sealing valve 3 from the transfer cavity 2 and enter the target cavity 5. Wherein, first sealing valve and second sealing valve can be manual valve, can be through pure manual operation, and the structure is simpler, more easily realizes.

In addition, the transfer rod 1 comprises a first push rod 1-1 and a second push rod 1-2, the front end of the first push rod 1-1 is fixed with a sample support 6, the sample support 6 is used for bearing a sample, the rear end of the first push rod 1-1 is detachably connected with the front end of the second push rod 1-2, namely, the first push rod 1-1 and the second push rod 1-2 can be in a connection state or in a separation state, the two states can be switched by controlling the second push rod 1-2, the sample support 6 is positioned in the transfer cavity 2, at least part of the first push rod 1-1 is positioned in the transfer cavity 2, and the second push rod 1-2 is positioned outside the transfer cavity 2. Like this, when the front end of transfer pole 1 enters into target cavity 5 by transferring chamber 2, through controlling second push rod 1-2 and carry out axial displacement, and then promote sample to hold in the palm 6 and enter into target cavity 5, realize transporting the sample from transferring chamber 2 internal rotation to target cavity 5.

The working process of the transfer device for the air-sensitive sample in this embodiment is as follows:

(1) sample loading process

When a sample needs to be transferred from the sample preparation chamber into the transfer chamber 2, taking the sample preparation chamber as a glove box as an example, firstly controlling the second push rod 1-2 to separate the second push rod 1-2 from the first push rod 1-1, and placing the transfer chamber 2 in a transition bin of the glove box, or of course, firstly placing the transfer chamber 2 in the transition bin of the glove box, and then separating the second push rod 1-2 from the first push rod 1-1; then the transferring cavity 2 is moved into the main cavity of the glove box, the second sealing valve 4 is opened under the environment of inert gas (such as nitrogen), the sample in the main cavity of the glove box is loaded on the sample holder 6, a third shorter push rod can be placed in the main cavity of the glove box for facilitating sample loading, the front end of the third push rod can be detachably connected with the rear end of the first push rod 1-1, and the sample holder 6 is moved out of the transferring cavity 2 by assembling and connecting the third push rod with the first push rod 1-1 and axially pushing the third push rod; finally, the second sealing valve 4 is closed, and the transfer chamber 2 is taken out of the glove box.

Therefore, through the split detachable structural design of the transfer rod, the transfer cavity can directly enter the glove box for sample loading, the loading speed of samples is improved, the loading process is simpler and more convenient, the samples are effectively prevented from being contacted with air, and the samples can be prevented from collision in the loading process; in addition, the glove box does not need to be refitted, and the cost is saved.

(2) Sample feeding process

When a sample is required to be sent into the target cavity 5 from the transfer cavity 2, the second push rod 1-2 is controlled firstly, so that the front end of the second push rod 1-2 is assembled and connected with the rear end of the first push rod 1-1, and an operator can control the first push rod 1-1 to axially move through the second push rod 1-2 to realize the front-back movement of the sample holder 6; secondly, connecting and opening the first sealing valve 3 and the second sealing valve 4 to enable the transfer cavity 2 to be communicated with the target cavity 5, wherein the target cavity 5 is in an inert gas environment; then pushing the second push rod 1-2 to enable the sample holder 6 to bear the sample and sequentially pass through the second sealing valve 4 and the first sealing valve 3 to enter the target cavity 5; subsequently, the second push rod 1-2 is operated to be separated from the first push rod 1-1, the second push rod 1-2 is removed from the target cavity 5, and the sample holder 6 and the first push rod 1-1 are retained in the target cavity 5; and finally, closing the first sealing valve 3 and the second sealing valve 4, disassembling and separating the first sealing valve 3 and the second sealing valve 4, and vacuumizing the target cavity 5.

(3) Sampling process

When a sample is required to be retrieved from the target cavity 5 into the transfer cavity 2, the first sealing valve 3 and the second sealing valve 4 are connected and opened, so that the transfer cavity 2 is communicated with the target cavity 5, and the target cavity 5 is in a vacuum environment; secondly, pushing the second push rod 1-2 axially to enable the front end of the second push rod 1-2 to enter the target cavity 5, and controlling the second push rod 1-2 to enable the front end of the second push rod 1-2 to be assembled and connected with the rear end of the first push rod 1-1; then the second push rod 1-2 is pulled backwards, so that the sample holder 6 returns to the transferring cavity 2 from the target cavity 5 through the first sealing valve 3 and the second sealing valve 4 in sequence; finally, the first sealing valve 3 and the second sealing valve 4 are closed, and the first sealing valve 3 and the second sealing valve 4 are detached and separated, so that the transfer cavity 2 and the target cavity 5 can move independently; in this way, decoupling of the transfer chamber 2 and the target chamber 5 is achieved without damaging the environment of the transfer chamber 2 and the target chamber 5. When the first sealing valve and the second sealing valve are detached and separated, blind plates can be respectively arranged on the first sealing valve and the second sealing valve and used for protecting the first sealing valve and the second sealing valve; in addition, the second sealing valve is preferably a vacuum valve.

In summary, in the transfer device for air-sensitive samples in this embodiment, by setting the transfer rod and the transfer cavity, and setting the first sealing valve on the target cavity, and setting the second sealing valve on the transfer cavity, and detachably connecting the first sealing valve and the second sealing valve, the transfer cavity can be communicated with the target cavity through the first sealing valve and the second sealing valve, so that the sample holder at the front end of the transfer rod can bear the movement of the sample between the transfer cavity and the target cavity, and the transfer of the sample between the transfer cavity and the target cavity is realized; in addition, the transfer rod adopts a split detachable structure, so that the transfer cavity can directly enter the glove box for sample loading, the loading efficiency of the samples is improved, the loading process is simpler and more convenient, the samples are effectively prevented from being contacted with air, and the samples can be prevented from collision in the loading process; the transfer device for the air-sensitive samples has the advantages of being simple in transfer operation, high in transfer efficiency and the like, and the risk of exposing the samples to air in the transfer process can be effectively reduced.

In this embodiment, the rear end of the first push rod is connected with the front end of the second push rod through a thread structure; therefore, when the first push rod and the second push rod are connected and separated, the second push rod only needs to rotate relative to the first push rod, and the operation is simpler. Of course, in other embodiments, the rear end of the first push rod and the front end of the second push rod may be connected by a turnbuckle structure.

Further, as shown in fig. 7, 8, 11 and 12, the rear end of the first push rod 1-1 is provided with a threaded hole 7, and the front end of the second push rod 1-2 is provided with an external thread 8 matched with the threaded hole 7. Of course, the threaded hole may be formed at the front end of the second push rod, and the external thread may be formed at the rear end of the first push rod.

As shown in fig. 7, a flared guide hole 9 is formed at the rear end of the screw hole 7, that is, the front end of the guide hole 9 communicates with the rear end of the screw hole 7, so that the front end of the second push rod 1-2 enters the screw hole 7 through the guide hole 9, and the guide hole 9 is used for guiding the front end of the second push rod 1-2 when the front end of the second push rod 1-2 is inserted into the screw hole 7, so that the front end of the second push rod 1-2 can enter the screw hole 7 more accurately.

And, as shown in fig. 7, the front end of the threaded hole 7 is formed with a positioning hole 10, that is, the front end of the threaded hole 7 is communicated with the rear end of the positioning hole 10, the front end of the second push rod 1-2 is axially extended with a positioning protrusion 11 matched with the positioning hole 10, when the external thread 8 is matched with the threaded hole 7, the positioning protrusion 11 is just inserted into the positioning hole 10, and radial supporting and fixing of the first push rod 1-1 and the second push rod 1-2 can be realized through the matching of the positioning protrusion 11 and the positioning hole 10, so that radial movement between the first push rod 1-1 and the second push rod 1-2 cannot be performed, and stability and firmness of the connection of the first push rod 1-1 and the second push rod 1-2 are ensured.

Further, as shown in fig. 7, the first push rod 1-1 is provided with a vent hole 12, one end of the vent hole 12 communicates with the screw hole 7, and the other end of the vent hole 12 extends to the outer peripheral surface of the first push rod 1-1. In this way, during the process of inserting the front end of the second push rod 1-2 into the threaded hole 7, the gas in the threaded hole 7 can be completely discharged through the vent hole 12, so that the front end of the second push rod 1-2 can be more easily inserted into the threaded hole 7, and the residual air in the threaded hole 7 can be prevented from entering into the transfer cavity 2 to damage the sample when the first push rod 1-1 moves in the axial direction.

In this embodiment, as shown in fig. 8 and 9, the second push rod 1-2 is sleeved with a push rod housing 13, the second push rod 1-2 can axially move in the push rod housing 13, the front end of the push rod housing 13 is detachably connected with the rear end of the transfer cavity 2, specifically, the push rod housing 13 is provided with a guide groove 14, a pull button 15 is fixed on the second push rod 1-2, the pull button 15 penetrates out of the push rod housing 13 through the guide groove 14, i.e. one end of the pull button 15 is fixedly connected with the second push rod 1-2, and the other end of the pull button 15 penetrates out of the push rod housing 13 through the guide groove 14, so that the second push rod 1-2 can be controlled to move through the pull button 15.

Specifically, the guide groove 14 includes a head groove 14-1, a linear groove 14-2 and a tail groove 14-3, the head groove 14-1 is located at the front side of the push rod housing 13 and extends in the circumferential direction of the push rod housing 13, the tail groove 14-3 is located at the rear side of the push rod housing 13 and extends in the circumferential direction of the push rod housing 13, the linear groove 14-2 is located between the head groove 14-1 and the tail groove 14-3, the linear groove 14-2 extends in the axial direction of the push rod housing 13, the head groove 14-1 and the tail groove 14-3 are located at the same side of the linear groove 14-2, and the front end of the linear groove 14-2 communicates with the first end of the head groove 14-1, the rear end of the linear groove 14-2 communicates with the first end of the tail groove 14-3, so that the external screw thread 8 and the screw hole 7 of the front end of the second push rod 1-2 are fixed when the pull button 15 is located at the first end of the head groove 14-1, the linear groove 14-2 and the first end of the tail groove 14-3 are screwed, and the external screw thread 8 and the external screw thread 7 of the second push rod is separated from the front end of the second end of the head groove 14-2 and the screw thread 7 when the second end of the tail groove 14-3 is located at the second end of the head groove 14-1. When the pull button moves in the head groove and the tail groove, the second push rod axially rotates relative to the push rod shell, and when the pull button moves in the linear groove, the second push rod axially moves relative to the push rod shell.

Thus, as shown in FIG. 9, when the sample holder 6 and the first push rod 1-1 are positioned in the transfer cavity 2 and the first push rod 1-1 is not connected with the second push rod 1-2, the pull button 15 is positioned at the second end of the tail groove 14-3, and at this time, the external thread 8 and the threaded hole 7 at the front end of the second push rod 1-2 are separated. When sample feeding is performed, the pull button 15 is moved from the second end of the tail groove 14-3 to the first end of the tail groove 14-3, at the moment, the external thread 8 at the front end of the second push rod 1-2 is screwed and fixed with the threaded hole 7, and the second push rod 1-2 is connected with the first push rod 1-1; secondly, the pull button 15 moves forwards along the linear groove 14-2 to the joint of the linear groove 14-2 and the head groove 14-1, and at the moment, the second push rod 1-2 pushes the sample holder 6 into the target cavity 5 from the transfer cavity 2 through the first push rod 1-1; the knob 15 is then moved from the first end of the head groove 14-1 to the second end of the head groove 14-1, at which time the external thread 8 at the front end of the second push rod 1-2 is separated from the threaded hole 7, and the second push rod 1-2 is separated from the first push rod 1-1. The operation of sampling is the opposite of that described above and will not be described again here. Through the structural design of the push rod shell 13 and the guide groove 14, the connection and the separation of the first push rod 1-1 and the second push rod 1-2 are controllable, the transfer rod 1 is ensured not to rotate during axial movement, and the sample on the sample support 6 can be effectively prevented from being scattered.

As shown in fig. 10 to 12, the rear end of the second push rod 1-2 is provided with a switching post 16, the pull button 15 is fixed on the switching post 16, the switching post 16 and the second push rod 1-2 are arranged on the same axis, a mounting hole is formed in the axis of the switching post 16, and the switching post 16 and the second push rod 1-2 are fixedly connected through the mounting hole and a screw 17. When the screw 17 is not screwed, the transfer post 16 can axially rotate relative to the second push rod 1-2, so that the specific position of the pull button 15 relative to the second push rod 1-2 in the circumferential direction can be adjusted, and further, when the second push rod 1-2 is separated from the first push rod 1-1, the pull button 15 is just positioned at the second end of the head groove 14-1 or the second end of the tail groove 14-3, and when the second push rod 1-2 is connected with the first push rod 1-1, the pull button 15 is just positioned at the first end of the head groove 14-1, the linear groove 14-2 or the first end of the tail groove 14-3. Wherein the screw may also be replaced by a bolt.

In addition, as shown in fig. 6 and 7, the rear end of the transferring cavity 2 is provided with an adapter sleeve 18, the adapter sleeve 18 is provided with a through hole, the second push rod 1-2 can pass through the through hole to be connected with the first push rod 1-1, the periphery of the adapter sleeve 18 is fixedly connected with the transferring cavity 2 through an adapter pressing plate 19, the adapter sleeve 18 can axially rotate relative to the transferring cavity 2, the adapter sleeve 18 is connected with the push rod housing 13 through a thread structure, the push rod housing 13 can be connected with the transferring cavity 2 through the adapter sleeve 18, and thus, the push rod housing 13 is not required to be held by a hand in the process of transferring samples, and the operation is more convenient. Because the thread starting point of the push rod shell 13 has randomness in the processing process, the thread structure on the adapter sleeve 18 can be smoothly connected with the thread structure on the push rod shell 13 by rotating the adapter sleeve 18.

In this embodiment, as shown in fig. 7, 13 and 14, positioning edges 20 extend from two sides of the sample support 6, a first elastic sheet 21 is disposed in the transfer cavity 2, the first elastic sheet 21 is specifically fixed at the lower end of the elastic sheet base 35, and the elastic sheet base 35 is fixedly connected with the transfer cavity 2, so that when the sample support 6 is located in the transfer cavity 2, the first elastic sheet 21 compresses the fixed positioning edges 20 along a direction perpendicular to the movement direction of the sample support 6, thereby preventing the sample support 6 from rotating in the transfer cavity 2, resulting in scattering of the sample, and when the first push rod 1-1 and the second push rod 1-2 are in threaded connection, and the second push rod 1-2 rotates relative to the sample support 6, the first elastic sheet 21 can also provide a supporting force for the sample support 6.

In addition, as shown in fig. 15, the air-sensitive sample transfer apparatus further includes a sample stage 22.

The sample stage 22 is configured to be disposed in the target cavity 5, two sides of the sample stage 22 are respectively provided with a pressing seat 23, each pressing seat 23 is provided with a second elastic sheet 24, so that when the sample holder 6 moves onto the sample stage 22, the second elastic sheet 24 compresses the fixed positioning edge 20 along a direction perpendicular to the movement direction of the sample holder 6, the sample holder 6 is fixed in the target cavity 5 through the sample stage 22, and when the first push rod 1-1 and the second push rod 1-2 are in threaded connection, and the second push rod 1-2 rotates relative to the sample holder 6, the second elastic sheet 24 can also provide a supporting force for the sample holder 6.

Further, as shown in fig. 15, a limiting protrusion 25 is provided at the front end of the sample stage 22, and the limiting protrusion 25 is used for limiting the movement of the sample holder 6 onto the sample stage 22, so as to prevent the movement of the sample holder 6. And, the rear end of the sample stage 22 is formed with a guide slope 26, which facilitates the movement of the sample holder 6 onto the sample stage 22, just between the two press seats 23.

In addition, as shown in fig. 13 and 14, the upper end surface of the sample holder 6 is provided with a nail table hole 27, the nail table hole 27 is used for inserting and installing a nail table, the sample holder 6 at the side part of the nail table hole 27 is provided with a top thread hole 28, the top thread hole 28 is communicated with the nail table hole 27, a screw is screwed into the top thread hole 28, and the screw abuts against the nail table in the nail table hole 27, so that the nail table is fixed. Wherein, can paste the conductive adhesive on the nail platform for bear the weight of the sample. Of course, in other embodiments, the conductive adhesive may be directly attached to the sample holder.

As shown in fig. 14, a fixing hole 37 is formed at the rear end of the sample holder 6, and the sample holder 6 is fixedly connected to the first push rod 1-1 through the fixing hole 37. Of course, the sample holder and the first push rod can also be in an integrated structure, so that the structure of the transfer device for the air-sensitive sample is simpler.

In this embodiment, as shown in fig. 5, the rear end of the first sealing valve 3 is connected with the front end of the second sealing valve 4 through the first quick connection flange 29, and the rear end of the second sealing valve 4 is connected with the front end of the transferring cavity 2 through the second quick connection flange 30, so that the connection between the first sealing valve 3 and the second sealing valve 4, and the connection between the second sealing valve 4 and the transferring cavity 2 are more convenient; as shown in fig. 4, the rear end of the first sealing valve 3 is provided with an adapter 36, and the first quick-connection flange 29 is fixedly connected with the first sealing valve 3 through the adapter 36.

In addition, as shown in fig. 7, a sealing ring 31 is arranged between the transfer rod 1 and the transfer cavity 2, and sealing between the transfer rod 1 and the transfer cavity 2 is realized through the sealing ring 31. When the sample holder 6 is located in the transfer chamber 2, the seal ring 31 is in contact with the outer peripheral surface of the first push rod 1-1, and when the sample holder 6 is located in the target chamber 5, the seal ring 31 is in contact with the outer peripheral surface of the second push rod 1-2.

Further, as shown in fig. 7, a sealing plate 34 is arranged at the rear end of the transfer cavity 2, the transfer rod 1 passes through the sealing plate 34 and enters the transfer cavity 2, and a sealing ring 31 is arranged between the sealing plate 34 and the transfer rod 1; of course, a sealing ring is also arranged between the sealing plate 34 and the transfer chamber 2.

In this embodiment, as shown in fig. 4, the transporting device for the air-sensitive sample further includes a display unit 32, where the display unit 32 is a display lamp.

The display unit 32 is arranged on the first sealing valve 3 and is used for displaying the state of the first sealing valve 3, so that an operator can intuitively know the state of the first sealing valve 3 through the display unit 32, and the condition that a sample collides with the sealing valve due to manual sample feeding when the sealing valve is closed is avoided. Of course, in other embodiments, the display unit may be used to display the status of the second sealing valve, or to display the status of the first sealing valve and the second sealing valve; the display unit may be a display screen.

Further, as shown in fig. 1 to 3 and fig. 6 to 7, the air-sensitive sample transferring device further includes a pressure detecting unit 33.

The pressure detection unit 33 is specifically arranged on the transferring cavity 2 and is used for detecting the air pressure in the transferring cavity 2, so that an operator can know the air pressure change condition in the transferring cavity 2 and the condition of sample damage caused by air leakage in the transferring cavity 2 is prevented; wherein the pressure detection unit may be a vacuum gauge.

In addition, the air-sensitive sample transfer device also includes a control unit (not shown). The control unit is electrically connected with the first sealing valve and the second sealing valve respectively, and can control states of the first sealing valve and the second sealing valve.

The foregoing is merely a specific embodiment of the invention and other modifications and variations can be made by those skilled in the art in light of the above teachings. It is to be understood by persons skilled in the art that the foregoing detailed description is provided for the purpose of illustrating the invention more fully, and that the scope of the invention is defined by the appended claims.

Claims (15)

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, 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.

2. The air sensitive sample transfer device of claim 1, wherein the rear end of the first push rod is connected to the front end of the second push rod by a threaded structure or a turnbuckle structure.

3. The transfer device of an air-sensitive sample according to claim 2, wherein 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.

4. A transfer device for air-sensitive samples according to claim 3, wherein a positioning hole is formed at the front end of the threaded hole, and a positioning protrusion fitted with the positioning hole is axially extended at the front end of the second push rod.

5. A transfer device for air sensitive samples according to claim 3, wherein the first push rod is provided with a vent hole, 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.

6. The air-sensitive sample transferring device according to claim 3, 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 guiding 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 guiding 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.

7. The transfer device for air-sensitive samples according to claim 6, 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.

8. The transfer device of an air-sensitive sample according to claim 6, 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.

9. 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.

10. The air sensitive sample transfer apparatus of claim 9, 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.

11. The air-sensitive sample transfer apparatus of claim 10, 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.

12. 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.

13. 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.

14. The air-sensitive sample transfer device according to any one of claims 1 to 13, 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.

15. The transport device for air-sensitive samples according to any one of claims 1 to 13, further comprising a pressure detection unit;

the pressure detection unit is used for detecting the air pressure in the transferring cavity.