Sample tube mounting equipment and adsorption instrument

Abstract

The invention relates to the technical field of adsorption instruments, particularly provides sample tube mounting equipment and an adsorption instrument, and aims to solve the problem that a sample tube is inconvenient to disassemble and assemble. In order to achieve the purpose, according to the sample tube mounting equipment, the movable assembly is arranged on the mounting connector and connected with the sealing assembly, so that the sealing assembly can move between the first position and the second position under the driving of the movable assembly; under the synergistic action with the mounting joint, the sample tube inserted into the mounting joint is compressed and sealed, so that the sealing performance of gas in the sample tube is ensured; when the sealing assembly moves to the second position, the sealing assembly is separated from the mounting joint, so that the sample tube is convenient to mount or dismount. Besides, the sample tube installation equipment does not need to seal the sample tube manually, but completes sealed installation of the sample tube through the movable assembly, so that the operation convenience and the test efficiency are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of adsorption instruments, and in particular provides a sample tube installation device and an adsorption instrument. Background Art

[0002] An adsorption analyzer is a precision analytical instrument used to measure the specific surface area of ​​materials. In practice, the frequent switching of samples for testing requires operators to repeatedly remove and install the sample tubes. However, the current method used by these instruments relies entirely on manual operation: the sample tubes must be manually sealed and installed on the adsorption analyzer's assembly and disassembly device before testing and then manually removed again after the test is complete. This traditional manual assembly and disassembly method is not only cumbersome but also significantly impacts testing efficiency.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0004] In order to solve at least one problem in the prior art, namely, to solve the problem of inconvenience in disassembling and assembling a sample tube, the present application provides a sample tube installation device, the sample tube installation device comprising:

[0005] A mounting connector, wherein a first mounting channel is provided on the mounting connector along a first direction, one end of the first mounting channel is used for inserting a sample tube, and the other end is used for connecting to an air inlet and outlet mechanism in the adsorption instrument;

[0006] a movable assembly, the movable assembly being arranged on the mounting joint;

[0007] A sealing assembly is provided on the movable assembly and is provided with a second mounting channel corresponding to and connected to the first mounting channel; the sealing assembly is configured to be movable between a first position and a second position along the first direction under the drive of the movable assembly; when the sealing assembly moves to the first position, it cooperates with the mounting joint to compress and seal the sample tube passing through the second mounting channel and mounted in the first mounting channel; when the sealing assembly moves to the second position, it disengages from the mounting joint to facilitate disassembly and assembly of the sample tube.

[0008] In the preferred technical solution of the above sample tube installation device, a third installation channel is opened on the installation joint along the first direction; and

[0009] The movable component includes a driving component and a quick-insertion lifting component, and the driving component is arranged on the side of the mounting joint away from the sealing component; the quick-insertion lifting component includes a rod, and the rod is inserted in the third mounting channel, and its two ends along the first direction respectively extend out of the third mounting channel; one end of the rod is connected to the driving component, and the other end is connected to the sealing component, so that the sealing component can move between the first position and the second position along the first direction under the action of the driving component and the rod.

[0010] In the preferred technical solution of the above-mentioned sample tube installation device, the driving assembly includes a quick plug-in and a driving member connected to the quick plug-in, the quick plug-in is arranged on a side of the installation joint away from the sealing assembly, and a first connecting structure is provided on the quick plug-in; and

[0011] A second connecting structure is provided at one end of the rod away from the sealing assembly, and the second connecting structure cooperates with the first connecting structure so that when the quick plug moves under the action of the driving member, it drives the sealing assembly on the rod to move between the first position and the second position.

[0012] In a preferred technical solution of the above-mentioned sample tube installation device, the first connecting structure comprises an adjustment hole and a transition zone, wherein the adjustment hole allows the rod to pass through and enables the quick-plug assembly to move relative to the rod along the length direction of the adjustment hole; the transition zone is located on the side of the quick-plug assembly away from the sealing assembly and corresponds to the position of the adjustment hole; the dimension from the transition zone to the side of the quick-plug assembly close to the sealing assembly gradually changes along the length direction of the adjustment hole; the second connecting structure comprises a guide member abutting against the transition zone, wherein the guide member is capable of moving along the transition zone when the driving member drives the quick-plug assembly to move, thereby driving the sealing assembly to move between the first position and the second position; or

[0013] The first connecting structure is a transition zone located on the side of the quick plug-in unit away from the sealing assembly, and the size from the transition zone to the side of the quick plug-in unit close to the sealing assembly gradually changes along the length direction of the adjustment hole. The second connecting structure is a connecting hole provided on the rod and capable of allowing the quick plug-in unit to pass through. The quick plug-in unit moves under the drive of the driving member, and when the transition zone passes through the connecting hole, the sealing assembly is driven to move between the first position and the second position.

[0014] In a preferred technical solution of the above-mentioned sample tube installation device, the transition zone is an inclined surface or a curved surface.

[0015] In a preferred technical solution of the above-mentioned sample tube installation device, the drive assembly further comprises a quick-insert guide member, which is arranged on a side of the installation joint away from the sample tube and has a guide channel formed therein; the quick-insert member is movably arranged in the guide channel so as to be driven by the drive member to move in the guide channel; and

[0016] The guide channel is communicated with the third installation channel, and the second connection structure is located in the guide channel.

[0017] In a preferred technical solution of the above-mentioned sample tube installation device, the rod member includes a first connecting rod and a second connecting rod, the second connecting rod is inserted into the third installation channel, and both ends of the second connecting rod extend out of the third installation channel respectively; one end of the second connecting rod is connected to the first connecting rod, and the other end is provided with the sealing assembly; and

[0018] One end of the first connecting rod away from the sealing assembly is connected to the driving assembly.

[0019] In the preferred technical solution of the above sample tube installation device, the quick-insert lifting assembly further includes an elastic member; and

[0020] The second connecting rod is a sleeve structure, a part of the first connecting rod is arranged in the second connecting rod, and the other part extends out of the second connecting rod and is connected to the driving assembly; an elastic member is provided on the first connecting rod located in the second connecting rod, and the two ends of the elastic member along the first direction are respectively connected to the first limit member on the first connecting rod and the second limit member on the second connecting rod; or, the first connecting rod is a sleeve structure, a part of the second connecting rod is arranged in the second connecting rod, and the other part extends out of the second connecting rod and is connected to the sealing assembly; an elastic member is provided on the second connecting rod located in the first connecting rod, and the two ends of the elastic member along the first direction are respectively connected to the first limit member on the first connecting rod and the second limit member on the second connecting rod.

[0021] In the preferred technical solution of the above sample tube installation device, the first limiting member is movably provided on the first connecting rod; and / or

[0022] The second limiting member is movably disposed on the second connecting rod.

[0023] In a preferred technical solution of the above sample tube installation device, the number of the first installation channel is at least one.

[0024] In a preferred technical solution of the above-mentioned sample tube installation device, the first installation channel includes a first channel and a second channel that are interconnected, the first channel is close to the sealing assembly, and its inner diameter is larger than the inner diameter of the second channel, and is used to insert the sample tube; the inner diameter of the second channel is smaller than the outer diameter of the sample tube, and is used to connect to the air inlet and outlet mechanism, and the difference in inner diameters between the first channel and the second channel forms a limiting structure that limits the insertion depth of the sample tube; or

[0025] A third limiting member for limiting the insertion depth of the sample tube is provided in the first installation channel.

[0026] In the preferred technical solution of the above-mentioned sample tube installation device, the sealing assembly includes a sealing plate and an elastic sealing member, the sealing plate is provided with the second installation channel, and is connected to the movable assembly; the elastic sealing member is located on the side of the sealing plate close to the installation joint, and can be sleeved on the sample tube, so that when the sealing plate moves from the second position to the first position, it cooperates with the installation joint to squeeze the elastic sealing member, thereby pressing and sealing the sample tube.

[0027] In a preferred technical solution of the above sample tube installation device, the installation joint is provided with a first plug-in structure penetrated by the first installation channel; and

[0028] The sealing plate is provided with a second plug-in structure which is penetrated by the second installation channel and plugged into and matched with the first plug-in structure; when the first plug-in structure and the second plug-in structure are plugged into and matched with each other, the elastic sealing component can be squeezed.

[0029] In the preferred technical solution of the above-mentioned sample tube installation device, the first plug-in structure is a first connecting sleeve and a first pressing member, and the second plug-in member is a second connecting sleeve; the first connecting sleeve is arranged outside the second connecting sleeve, and the first pressing member is arranged at an end of the first connecting sleeve away from the elastic sealing member and is connected to the installation joint; the elastic sealing member is located between the first pressing member and the second connecting sleeve; or

[0030] The first plug-in structure is a first connecting sleeve, and the second plug-in component is a second connecting sleeve and a second pressing component; the second connecting sleeve is arranged outside the first connecting sleeve, and the second pressing component is arranged at an end of the second connecting sleeve away from the mounting joint and is connected to the sealing plate; the elastic sealing component is arranged between the second pressing component and the first connecting sleeve.

[0031] In the preferred technical solution of the above-mentioned sample tube installation device, the sealing plate includes a pressure plate and a connecting plate. The connecting plate is arranged on the side of the pressure plate close to the installation joint, and is provided with the second installation channel and a through hole for the movable end of the movable component to pass through, so that the movable end of the movable component is connected to the pressure plate; the second installation channel passes through the pressure plate, and the elastic sealing member is located on the side of the connecting plate close to the installation joint.

[0032] In a preferred technical solution of the above-mentioned sample tube installation device, when a second plug-in structure is provided on the sealing plate, the second plug-in structure is provided on the pressing plate or the connecting plate.

[0033] In the preferred technical solution of the above sample tube installation device, the sealing assembly further includes a skeleton oil seal; and

[0034] An assembly groove is provided on the inner wall of the sealing plate, and the skeleton oil seal is installed in the assembly groove.

[0035] In a preferred technical solution of the above sample tube installation device, the sample tube installation device further includes a pull rod, which connects the movable component with the sealing component.

[0036] In a preferred technical solution of the above sample tube installation device, the installation joint includes a mounting block and a joint. The joint is provided on a side of the mounting block close to the sealing assembly, and the first installation channel is provided on the joint.

[0037] In a preferred technical solution of the above-mentioned sample tube installation device, the number of the connector is at least one.

[0038] The present application also provides an adsorption instrument, which includes the sample tube installation device described in any of the above preferred technical solutions.

[0039] It will be understood by those skilled in the art that the sample tube installation device of the present application, by arranging the movable component on the installation joint and connecting it to the sealing component, enables the sealing component to move between the first position and the second position under the drive of the movable component. When the sealing component is in the first position, it cooperates with the installation joint to implement compression sealing on the sample tube inserted in the installation joint, thereby ensuring the sealing of the gas in the sample tube. When the sealing component moves to the second position, it detaches from the installation joint, facilitating the installation or removal of the sample tube. In addition, the sample tube installation device of the present application does not require manual sealing of the sample tube, but instead completes the sealed installation of the sample tube through the movable component, which significantly improves the convenience of operation and the efficiency of the test.

[0040] Furthermore, by opening a third mounting channel on the mounting joint for the rod to pass through, and connecting the two ends of the rod to the driving assembly and the sealing assembly respectively, the rod can move along the first direction under the drive of the driving assembly, thereby driving the sealing assembly to move between the first position and the second position.

[0041] Furthermore, by providing a first connecting structure on the quick plug-in component and providing a second connecting structure that cooperates with the first connecting structure on the rod component, the quick plug-in component can drive the rod component to move along the first direction when driven by the driving component, thereby driving the sealing assembly to move between the first position and the second position.

[0042] Furthermore, by configuring the first connecting structure as an adjustment hole and a transition zone, and the second connecting structure as a guide member disposed on the rod, wherein the adjustment hole is for the rod to pass through, the quick-plug assembly moves relative to the rod along the length of the adjustment hole; and the transition zone corresponds to the position of the adjustment hole and abuts against it. Because the transition zone has a gradually varying dimension along the first direction, movement of the quick-plug assembly is converted by the guide member into movement of the rod along the first direction, thereby enabling movement of the sealing assembly between the first and second positions. Furthermore, by configuring the first connecting structure as a transition zone with a gradually varying dimension along the first direction, and configuring the second connecting structure as a connecting hole, when the quick-plug assembly passes through the connecting hole, the gradually varying characteristics of the transition zone cooperate with the connecting hole to convert the movement of the quick-plug assembly into linear displacement of the rod, thereby driving movement of the sealing assembly between the first and second positions.

[0043] Furthermore, by providing a guide channel on the quick-insert guide piece, the quick-insert piece can move along the guide channel, thereby realizing movement of the sealing assembly between the first position and the second position.

[0044] Furthermore, by inserting part of the first connecting rod into the second connecting rod and providing an elastic member on the first connecting rod located in the second connecting rod, or inserting part of the second connecting rod into the first connecting rod and providing an elastic member on the second connecting rod located in the first connecting rod; the two ends of the elastic member are respectively connected to the first limit member on the first connecting rod and the second limit member on the second connecting rod, so that when the first connecting rod moves in the direction away from the sealing assembly under the drive of the driving assembly, the elastic member undergoes elastic deformation, and the rebound force of the elastic member drives the second connecting rod to drive the sealing assembly to move from the second position to the first position; when the first connecting rod moves in the direction close to the sealing assembly under the drive of the driving assembly, the elastic member undergoes elastic deformation again, and the rebound force of the elastic member drives the second connecting rod to drive the sealing assembly to move from the second position to the first position.

[0045] Furthermore, by movably setting the first limit member on the first connecting rod and / or movably setting the second limit member on the second connecting rod, the initial deformation of the elastic member can be adjusted, excessive compression or stretching of the spring can be avoided, fatigue loss can be reduced, and the impact force between the sealing assembly and the mounting joint can be effectively adjusted.

[0046] Furthermore, by setting the first installation channel as a first channel and a second channel that are interconnected, there is an inner diameter difference between the first channel and the second channel, so that the inner diameter difference can serve as a limit structure for limiting the insertion depth of the sample tube, which can not only avoid the problem of the sample tube being inserted too deep or too shallow due to manual operation, but also ensure the consistency of the positioning of different batches of sample tubes.

[0047] Furthermore, by configuring the sealing assembly to include a sealing plate and an elastic sealing member, and connecting the sealing plate to the movable assembly, when the movable assembly drives the sealing plate to move from the second position to the first position, the elastic sealing member sleeved on the sample tube can be squeezed under the cooperation of the sealing plate and the mounting joint, thereby achieving a compression seal on the sample tube.

[0048] Furthermore, by providing a first plug-in structure on the mounting joint and a second plug-in structure on the sealing plate, when the first plug-in structure and the second plug-in structure are plugged in and matched, the elastic sealing member can be squeezed to achieve compression sealing of the sample tube.

[0049] Furthermore, by configuring the first plug-in structure as a first connecting sleeve and a first pressing member, and configuring the second plug-in structure as a second connecting sleeve that can be inserted into the first connecting sleeve, and the elastic sealing member being located between the first pressing member and the second connecting sleeve, when the sealing plate moves from the second position to the first position, the first pressing member and the second connecting sleeve cooperate to squeeze the elastic sealing member, thereby achieving sealing of the sample tube. Furthermore, by configuring the first plug-in structure as a first connecting sleeve, and configuring the second plug-in structure as a second pressing member and a second connecting sleeve that can be sleeved outside the first connecting sleeve, and the elastic sealing member being located between the second pressing member and the first connecting sleeve, when the sealing plate moves from the second position to the first position, the second pressing member and the first connecting sleeve cooperate to squeeze the elastic sealing member, thereby achieving sealing of the sample tube.

[0050] Furthermore, by arranging a skeleton oil seal on the inner wall of the sealing plate, the skeleton oil seal can fit tightly with the surface of the sample tube to form a radial seal, thereby ensuring that the pressure plate is in the first position and the sample tube is inserted into the second installation channel to prevent the sample tube from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0052] Figure 1It is a structural diagram of the sample tube installation equipment of this application;

[0053] Figure 2 This is the main view of the sample tube installation equipment of this application

[0054] Figure 3 yes Figure 2 Cross-section at AA;

[0055] Figure 4 yes Figure 2 Cross-section at the middle BB;

[0056] Figure 5 is a cross-sectional view of the installation joint and seal assembly in this application;

[0057] Figure 6 is a cross-sectional view of another embodiment of the mounting joint and sealing assembly of the present application;

[0058] Figure 7 It is a structural diagram of the movable component and the sealing component in this application;

[0059] Figure 8 It is a structural diagram of the quick-insert lifting assembly in this application;

[0060] Figure 9 This is a structural diagram of the fast plug-in in this application.

[0061] List of reference numerals:

[0062] 1. Mounting connector; 11. Mounting block; 111. Third mounting channel; 112. Air channel; 113. Connecting sleeve; 12. Connector; 121. First mounting channel; 1211. First channel; 1212. Second channel; 122. First connecting sleeve; 123. First pressing member; 2. Movable assembly; 21. Drive assembly; 211. Quick-connect assembly; 2111. Adjustment hole; 2112. Transition zone; 2113. First zone; 2114. Second zone; 212. Cylinder; 213. Quick-connect guide; 2131. Guide channel; 2132 , connecting port; 22, quick-insert lifting assembly; 221, rod; 2211, first connecting rod; 22111, first limiter; 2212, second connecting rod; 22121, second limiter; 222, spring; 223, guide; 3, sealing assembly; 31, sealing plate; 311, pressure plate; 3111, slot; 312, connecting plate; 3121, second connecting sleeve; 3122, second pressing member; 32, elastic sealing member; 33, skeleton oil seal; 4, pull rod; 41, block; 5, locking member; 6, fourth limiter; 7, sample tube. DETAILED DESCRIPTION

[0063] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. It should be noted that in the description of the present application, the terms "upper", "lower", "inner", "bottom", "end" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are merely for the convenience of description and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0064] In addition, it should be noted that in the description of this application, unless otherwise specified, stipulated, or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0065] Combine Figure 1-9 , the sample tube installation equipment of this application is described.

[0066] like Figure 1-7 As shown, the sample tube installation device includes a mounting joint 1, a movable component 2 and a sealing component 3. Among them, the mounting joint 1 includes a mounting block 11 and four joints 12. An air path 112 and a third mounting channel 111 extending along the first direction are provided on the mounting block 11. The four joints 12 are all arranged on one side of the mounting block 11 in the first direction. A first mounting channel 121 connected to the air path 112 is provided on each joint 12 along the first direction. The air path 112 is connected to the air inlet and outlet mechanism of the adsorption instrument. The end of the first mounting channel 121 away from the mounting block 11 is used to plug in the sample tube 7, so that the air inlet and outlet mechanism can perform degassing and adsorption operations on the sample in the sample tube 7. In addition, by providing four joints 12, four sample tubes 7 can be inserted into the mounting joint 1 at the same time, so that the samples in the four sample tubes 7 can be degassed and adsorbed at the same time, thereby improving the test efficiency.

[0067] It should be noted that the first aspect of this application refers to Figure 1-2 The Z direction shown in FIG7 includes the positive direction and the negative direction indicated by the arrow. The second direction refers to Figure 1 、 3 -Y direction shown in 4 and 7 includes the positive direction and the negative direction indicated by the arrow. The third direction refers to Figure 1-2 The X direction shown in 7 includes the positive direction and the negative direction indicated by the arrows.

[0068] In an exemplary embodiment, the present application has no restrictions on the connection method between the mounting block 11 and the connector 12, as long as the connector 12 can be installed on the mounting block 11. For example, the connector 12 is integrally formed with the mounting block 11, or the connector 12 is detachably installed on the mounting block 11. When the connector 12 is detachably installed on the mounting head, a fourth stopper 6 can be provided at the end of the connector 12 away from the mounting head, such as Figure 1 As shown, the fourth limiting member 6 is provided with limiting holes having the same number as the joints 12 , so that the joints 12 are limited in the limiting plate, thereby improving the stability of the joints 12 .

[0069] In an exemplary embodiment, the number of connectors 12 provided in this application is not fixed, and those skilled in the art can adjust it as needed. For example, the number of connectors 12 provided can also be 1, 2, 3, or other numbers. In addition, in other preferred embodiments, the provision of connectors 12 is not necessary, and those skilled in the art can choose it as needed. In particular, in the case where the connector 12 is not provided, the first mounting channel 121 can be directly provided on the mounting block 11, so that one end of the first mounting channel 121 is used to plug in the sample tube 7, and the other end is connected to the gas path channel 112.

[0070] In other preferred embodiments, the provision of the air passage 112 is not essential, and those skilled in the art may select it as needed. In the case where the air passage 112 is not provided, the first installation passage 121 is directly connected to the air inlet and outlet mechanism.

[0071] See next Figure 4-6 The first installation channel 121 includes a first channel 1211 and a second channel 1212 that are interconnected. The first channel 1211 is close to the sealing assembly 3, and its inner diameter is larger than the inner diameter of the second channel 1212, and is used to insert the sample tube 7. The inner diameter of the second channel 1212 is smaller than the outer diameter of the sample tube 7, and is used to communicate with the gas path channel 112. The difference in inner diameter between the first channel 1211 and the second channel 1212 forms a limiting structure that limits the insertion depth of the sample tube 7, so that when the sample tube 7 is inserted into the first channel 1211, the tube mouth of the sample tube 7 can abut against the limiting structure, thereby limiting the insertion depth of the sample tube 7.

[0072] In the exemplary embodiment, the present application provides a flexible method for limiting the insertion depth of the sample tube 7, and those skilled in the art can adjust this method as needed. For example, if the first installation channel 121 is a channel of constant diameter, the insertion depth of the sample tube 7 can also be limited by providing a third limiting member within the first installation channel 121. The third limiting member can be an annular limiting plate.

[0073] See next Figure 3 、 7-8, the movable assembly 2 includes a drive assembly 21 and a quick-insert lifting assembly 22. The drive assembly 21 is disposed on the side of the mounting block 11 away from the sample tube 7, and a connecting cylinder 113 is disposed in the third mounting channel 111 to ensure that the rod can move in the first direction. The quick-insert lifting assembly 22 includes a rod 221 and an elastic member. The rod 221 is inserted into the connecting cylinder 113, and its two ends along the first direction extend out of the connecting cylinder 113. One end of the rod 221 is connected to the drive assembly 21, and the other end is connected to the sealing assembly 3, so that the sealing assembly 3 can move between the first position and the second position along the first direction under the action of the drive assembly 21 and the rod 221.

[0074] In the exemplary embodiment, the quick-insert lifting assembly 22 is not required and can be selected by those skilled in the art as needed. In the absence of a quick-insert lifting member, the movable assembly 2 or the drive assembly 21 can be designed as an electric telescopic mechanism, the movable end of which is connected to the sealing assembly 3 and can also drive the sealing assembly 3 to move along the first direction between the first position and the second position.

[0075] In an exemplary embodiment, the connection cylinder 113 is not required and can be selected by those skilled in the art as needed. In the absence of 113, the rod is directly inserted into the third installation channel extending along the first direction, which can also ensure that the rod moves along the first direction.

[0076] See next Figure 1-3 7, the drive assembly 21 includes a quick-insert assembly 211, a drive member, and a quick-insert guide 213. The drive member is a cylinder 212. Both the quick-insert guide 213 and the cylinder 212 are mounted on a side of the mounting block 11 away from the sample tube 7 via a bracket. A guide channel 2131 is formed within the quick-insert guide 213. This guide channel 2131 extends through both ends of the quick-insert guide 213 along the second direction, allowing the quick-insert assembly 211 to be removably inserted into the guide channel 2131. Both ends of the quick-insert guide 213 along the first direction are provided with a communication port 2132 that communicates with the guide channel 2131. This communication port 2132 communicates with the third mounting channel 111, allowing one end of the rod 221 to pass through the communication port 2132 and extend into the guide channel 2131.

[0077] In the exemplary embodiment, the arrangement of the quick-connect guide 213 is not fixed in this application and can be adjusted by those skilled in the art based on specific application scenarios. For example, the quick-connect guide 213 may be open at both ends along the first direction, or the quick-connect guide 213 may be open at one end away from the sealing assembly 3 and have a communication opening 2132 at the other end; or the quick-connect guide 213 may have no through hole at the end away from the sealing assembly 3, i.e., this side is closed.

[0078] In other preferred embodiments, the provision of the quick-insert guide 213 is not required and can be selected by those skilled in the art as needed. Without the quick-insert guide 213, the quick-insert plug 211 is movably disposed on the side of the mounting block 11 away from the sample tube 7. This application does not limit the manner in which the quick-insert plug 211 is disposed on the side of the mounting block 11 away from the sample tube 7, as long as the quick-insert plug 211 is movably disposed on the side of the mounting block 11 away from the sample tube 7. For example, the side of the mounting block 11 away from the sample tube 7 is provided to extend along the second direction to a slideway, and the quick-insert plug 211 is disposed within the slideway via a slider.

[0079] See next Figure 7-9 The quick-plug 211 is provided with a first connection structure, and the end of the rod 221 away from the sealing assembly 3 is provided with a second connection structure. The first connection structure comprises an adjustment hole 2111 and a transition zone 2112. The adjustment hole 2111 is provided on the quick-plug 211 along the first direction, and extends along the second direction and penetrates one end of the quick-plug 211 in the second direction, so that one end of the quick-plug 211 along the second direction is a notched end, and the other end is a closed end. The closed end is connected to the movable end of the cylinder 212, and the notched end serves as an insertion end for insertion into the guide channel 2131, thereby enabling the quick-plug 211 to reciprocate along the second direction within the guide channel 2131 under the action of the cylinder 212. The dimension of the adjustment hole 2111 in the second direction is greater than the dimension of the rod 221 in the second direction. Simultaneously, the dimension of the adjustment hole 2111 in the third direction matches that of the rod 221, thereby facilitating the quick-plug 211 to pass through the rod 221 and move within the guide channel 2131 in the second direction. The transition zone 2112 is located on the side of the quick-plug 211 away from the sealing assembly 3 and corresponds to the position of the adjustment hole 2111. The transition zone 2112 is an inclined surface, and its dimension toward the side of the quick-plug 211 closer to the sealing assembly 3 gradually increases from the notched end to the closed end. The second connecting structure is a guide member 223 abutting the transition zone 2112. The guide member 223 is a guide rod capable of moving along the transition zone 2112 when the driver drives the quick-plug 211 to move, thereby driving the sealing assembly 3 to move between the first and second positions.

[0080] It should be noted that the connecting opening 2132 on the side of the quick-connect guide 213 away from the connector can also extend to the connecting opening 2132 when the maximum dimension from the transition zone 2112 to the side of the quick-connect member 211 near the sealing assembly 3 is equal to the dimension of the guide channel 2131 in the first direction, ensuring that the guide can move along the transition zone. If the quick-connect guide 13 is not provided with the connecting opening 132 on the side away from the connector, the dimension of the guide channel in the first direction can be no less than the sum of the dimension of the guide in the first direction and the maximum dimension of the quick-connect member in the first direction.

[0081] It should be noted that when assembling the quick-insert lifting assembly 22 and the drive assembly 21, the first end of the rod 221 with the guide 223 is first passed through the communication port 2132 of the quick-insert guide 213, extending it outside the quick-insert guide 213. Subsequently, the cylinder 212 pushes the quick-insert component 211 into the guide channel 2131. The force applied to the rod 221 is then released, allowing the guide 223 to extend into the guide channel 2131 and abut against the side of the quick-insert component 211 away from the sealing assembly 3.

[0082] In an exemplary embodiment, the present application does not fix the structure of the adjustment hole 2111, and those skilled in the art can adjust it as needed. For example, both ends of the adjustment hole 2111 along the second direction are closed ends.

[0083] In the exemplary embodiment, the present application provides for flexible arrangements of the first and second connecting structures, and those skilled in the art may adjust these arrangements as needed. For example, the first connecting structure comprises a transition zone 2112, located on the side of the quick-plug 211 away from the sealing assembly 3. The transition zone 2112 gradually changes in size along the length of the adjustment hole 2111, extending from the transition zone 2112 to the side of the quick-plug 211 closer to the sealing assembly 3. The second connecting structure comprises a connecting hole provided on the rod 221 through which the quick-plug 211 passes. The inner wall of the connecting hole, on the side away from the sealing assembly 3, abuts against the transition zone 2112, enabling the quick-plug 211 to move under the drive of the driver, thereby causing the rod 221 to move along the transition zone 2112, thereby driving the sealing assembly 3 to move between the first and second positions.

[0084] In the exemplary embodiment, the specific configuration of the transition zone 2112 is not fixed in this application and can be adjusted by those skilled in the art as needed. For example, the transition zone 2112 can also be a curved surface. And / or, the transition zone 2112 can also gradually decrease in size from the notched end to the closed end.

[0085] See next Figure 3 、 79, the side of the quick-plug 211 away from the mounting block 11 includes not only a transition zone 2112, but also a first zone 2113 and a second zone 2114. The first zone 2113, transition zone 2112, and second zone 2114 are arranged sequentially along the second direction, and the transition zone 2112 is connected to the first zone 2113 and second zone 2114, respectively. The first zone 2113 is close to the notched end, and the second zone 2114 is close to the closed end. The positions of the three zones correspond to the positions of the adjustment hole 2111. The first zone 2113 and the second zone 2114 are both flat surfaces, while the transition zone 2112 is an inclined surface. The size of the first zone 2113 in the first direction is smaller than the size of the second zone 2114 in the first direction, so that the size of the transition zone 2112 in the first direction gradually increases from the notched end to the closed end. The guide member 223 is located in the guide channel 2131. When the cylinder 212 drives the quick-plug assembly 211 to move, the guide member 223 can move along the side of the quick-plug assembly 211 away from the mounting block 11 between the first zone 2113 and the second zone 2114. When the guide member 223 moves along the transition zone 2112, it can drive the sealing assembly 3 to move between the first position and the second position.

[0086] In the exemplary embodiment, the arrangement of the quick-plug 211 in this application is not fixed and can be adjusted as needed by those skilled in the art. For example, the quick-plug 211 is provided with only the transition zone 2112, i.e., the position corresponding to the adjustment hole 2111 only has the transition zone 2112, and the guide member 223 moves only along the transition zone 2112 under the action of the cylinder 212.

[0087] See next Figure 2-37, the rod 221 includes a first connecting rod 2211 and a second connecting rod 2212. The second connecting rod 2212 is a sleeve structure and is inserted into the connecting tube 113. The two ends of the second connecting rod 2212 extend out of the connecting tube 113 respectively, and one end is connected to the sealing assembly 3, and the other end can accommodate the first connecting rod 2211. A portion of the first connecting rod 2211 is arranged in the second connecting rod 2212, and the end of this portion is provided with a first stopper 22111. The other portion extends outside the second connecting rod 2212 and is provided with a guide 223 at its end away from the sealing assembly 3. The first stopper 22111 is an adjustable nut that is threadedly connected to the first connecting rod 2211 and can move along the first connecting rod 2211 in a first direction. A second stopper 22121 is provided at the end of the second connecting rod 2212 away from the sealing assembly 3. This second stopper 22121 is a locknut that allows the first connecting rod 2211 to pass through while also being threadedly connected to the end of the second connecting rod 2212. These two nuts also prevent the first connecting rod 2211 from falling out of the second connecting rod 2212. An elastic member, a spring 222, is provided on the first connecting rod 2211, located within the second connecting rod 2212. The spring 222 is connected to the locknut and the adjustable nut at both ends along the first direction, respectively. Since the adjustable nut can move along the length of the first connecting rod 2211, the adjustable nut can also adjust the initial compression of the spring 222. When the first connecting rod 2211 moves away from the sealing assembly under the action of the quick-connect plug 211 and the cylinder 212, the spring 222 is compressed. The rebound force of the elastic member causes the second connecting rod 2212 to move the sealing assembly 3 from the second position toward the first position, thereby achieving a tight seal on the sample tube 7. Furthermore, when the first connecting rod 2211 moves toward the sealing assembly 3 under the action of the quick-connect plug 211 and the cylinder 212, the elastic member is stretched. The rebound force of the elastic member causes the second connecting rod 2212 to move the sealing assembly 3 from the first position back to the second position, releasing the sealing assembly 3 from the mounting connector 1 and facilitating removal of the sample tube 7.

[0088] It should be noted that the difference between a locknut and an adjustable nut is that the locknut has a step formed on its inner wall, so it can only be threaded onto the end of the second connecting rod 2212 and cannot move as a whole along its length. In addition, the step of the locknut is located within the cylindrical space of the second connecting rod 2212, so it can be connected to the spring 222. The adjustable nut, on the other hand, can move as a whole along the length of the first connecting rod 2211.

[0089] In the exemplary embodiment, the specific configuration of the first stopper 22111 and the second stopper 22121 is not fixed in this application and can be adjusted by those skilled in the art as needed. For example, the first stopper 22111 can be a locknut or a stopper plate fixed to the first connecting rod 2211; and / or the second stopper 22121 can be a stopper plate fixed to the inner wall of the second connecting rod 2212, or the second stopper 22121 can be a stopper plate threadedly connected to the inner wall of the second connecting rod 2212.

[0090] In an exemplary embodiment, the present application does not have a fixed arrangement for the first connecting rod 2211 and the second connecting rod 2212, and those skilled in the art may adjust the arrangement according to specific application scenarios. For example, the first connecting rod 2211 is a sleeve structure, with a portion of the second connecting rod 2212 disposed within the second connecting rod 2212, and the other portion extending outside the second connecting rod 2212 and connected to the sealing assembly 3; an elastic member is disposed on the second connecting rod 2212 located within the first connecting rod 2211, and the two ends of the elastic member along the first direction respectively form abutment with the first limiting member 22111 and the second limiting member 22121. In this case, the first limiting member 22111 may be a locknut, which is threadedly connected to the end of the first connecting rod 2211 near the sealing assembly 3, and the second limiting member 22121 may be an adjustable nut, which is connected to the second connecting rod 2212 within the first connecting rod 2211.

[0091] In other exemplary embodiments, the provision of an elastic member is not essential and can be selected by those skilled in the art as needed. In the absence of an elastic member, the rod 221 only includes a first connecting rod 2211 and a second connecting rod 2212, and the first connecting rod 2211 and the second connecting rod 2212 are fixedly connected to form a rod 221 of equal length.

[0092] See next Figure 1-4 and 7, the sealing assembly 3 includes a sealing plate 31 and an elastic sealing member 32, the sealing plate 31 includes a pressure plate 311 and a connecting plate 312, and the connecting plate 312 is arranged on the side of the pressure plate 311 close to the mounting joint 1. Four second mounting channels and through holes are provided on the connecting plate 312. The four second mounting channels correspond to and are connected to the first mounting channel 121 one by one. Each second mounting channel passes through the pressure plate 311, and the through hole can allow the end of the second connecting rod 2212 to pass through, and the second connecting rod 2212 is connected to the pressure plate 311. The elastic sealing member 32 is a sealing ring, which is located on the side of the connecting plate 312 close to the mounting joint, and can be sleeved on the sample tube 7, so that when the pressure plate 311 moves from the second position to the first position, the connecting plate 312 cooperates with the mounting joint 1 to squeeze the sealing ring, thereby pressing and sealing the sample tube 7.

[0093] In the exemplary embodiment, the present application does not have a fixed arrangement for the sealing plate 31, and those skilled in the art may adjust it as needed. For example, the sealing plate 31 may also include only the pressing plate 311, and the pressing plate 311 cooperates with the mounting connector 1 to compress the sealing ring.

[0094] It should be noted that the number of second mounting channels provided in this application is not fixed, and those skilled in the art can adjust it based on the number of first mounting channels 121. For example, when the number of first mounting channels 121 is 1, the number of second mounting channels is also 1; when the number of first mounting channels 121 is 2, the number of second mounting channels is also 2.

[0095] See next Figure 4-5 A first plug-in structure is provided at the end of the connector 12 near the sealing assembly 3. The first plug-in structure comprises a first connecting sleeve 122 and a first pressing member 123. The first pressing member 123 extends along the connector 12 in a direction away from the axis of the connector 12, and the first connecting sleeve 122 extends along the edge of the first pressing member 123 toward the sealing assembly 3. A second plug-in structure is provided on the side of the connecting plate 312 near the mounting connector 1. The second plug-in structure comprises a second connecting sleeve 3121. The second connecting sleeve 3121 is penetrated by the second mounting channel and extends along the connecting plate 312 toward the mounting block 11. The first connecting sleeve 122 is sleeved onto the outside of the second connecting sleeve 3121. A sealing ring is provided within the first connecting sleeve 122 and between the first pressing member 123 and the second connecting sleeve 3121. When the pressing plate 311 moves from the second position to the first position, the first pressing member 123 and the second connecting sleeve 3121 can squeeze the sealing ring, thereby compressing and sealing the sample tube 7.

[0096] In the exemplary embodiment, the present application does not have a fixed arrangement for the first plug-in structure and the second plug-in structure, and those skilled in the art can adjust it as needed. Figure 6 As shown, the first plug-in structure is the first connecting sleeve 122, and the second plug-in component is the second connecting sleeve 3121 and the second pressing member 3122. The second connecting sleeve 3121 extends along the connecting plate 312 toward the connector 12. The inner diameter of the second connecting sleeve 3121 is larger than the inner diameter of the second mounting channel, so that the connecting plate 312 between the inner wall of the second connecting sleeve 3121 and the second mounting channel serves as the second pressing member 3122. The second connecting sleeve 3121 is sleeved over the first connecting sleeve 122. The sealing ring is disposed within the second connecting sleeve 3121 and between the second pressing member 3122 and the first connecting sleeve 122. When the pressing plate 311 moves from the second position to the first position, the second pressing member 3122 and the first connecting sleeve 122 can squeeze the sealing ring, thereby compressing and sealing the sample tube 7.

[0097] In an exemplary embodiment, the present application does not provide a fixed location for the second plug-in structure, and those skilled in the art can adjust it as needed. For example, the second plug-in structure can also be set on the pressure plate 311. When the second plug-in structure is a second connecting sleeve 3121, the second connecting sleeve 3121 passes through the connecting plate 312 and is inserted into the first connecting sleeve 122, squeezing the sealing ring inside the first connecting sleeve 122 to achieve a tight seal on the sample tube 7. When the second plug-in structure is a second connecting sleeve 3121 and a second pressing member 3122, the second connecting sleeve 3121 extends along the connecting plate 312 toward the connector 12. The inner diameter of the second connecting sleeve 3121 is larger than the inner diameter of the second mounting channel, so that the pressure plate 311 between the inner wall of the second connecting sleeve 3121 and the second mounting channel serves as the second pressing member 3122; the second connecting sleeve 3121 is sleeved outside the first connecting sleeve 122, and the sealing ring is set inside the second connecting sleeve 3121 and is located between the second pressing member 3122 and the first connecting sleeve 122.

[0098] See next Figure 4-6 The sealing assembly 3 also includes four skeleton oil seals 33, which correspond one to one with the four first mounting channels 121. A recessed assembly groove is formed on the inner wall of the first mounting channel 121, at the junction of the sealing plate 31 and the connecting plate 312. The skeleton oil seal 33 is installed in the assembly groove. When the sample tube 7 is inserted into the first mounting channel 121 through the skeleton oil seal 33, the skeleton oil seal 33 can tightly fit the surface of the sample tube 7, forming a radial seal. This ensures that the pressing plate 311 is in the first position and prevents the sample tube 7 from falling when inserted into the first mounting channel 121.

[0099] The number of skeleton oil seals 33 is consistent with the number of first installation channels 121. That is, when there are two first installation channels 121, there are two skeleton oil seals 33. When there are three first installation channels 121, there are three skeleton oil seals 33.

[0100] In the exemplary embodiment, the present application does not provide a fixed location for the mounting groove, and those skilled in the art may adjust the location as needed. For example, the mounting groove may be independently provided on the sealing plate 31 or the connecting plate 312. It should be noted that when the sealing plate 31 only includes the pressing plate 311, the mounting groove is provided only on the pressing plate 311.

[0101] See next Figure 3 and 7The sample tube installation device also includes a pull rod 4, which is used to connect the movable assembly 2 and the sealing assembly 3. Specifically, a connecting channel is provided on the pressure plate 311, which passes through the connecting plate 312. A slot 3111 is provided on the inner wall of the connecting channel located on the pressure plate 311. A block 41 is provided on the outer wall of one end of the pull rod 4, which engages with the slot 3111. The other end of the pull rod 4 passes through the first connecting channel and abuts the end of the second connecting rod 2212. The pull rod 4 and the second connecting rod 2212 are connected by a locking member 5.

[0102] In an exemplary embodiment, the present application does not provide a fixed connection method between the second connecting rod 2212 and the pressing plate 311, and those skilled in the art may adjust the connection method based on the desired configuration. For example, threaded holes are provided on both the second connecting rod 2212 and the pressing plate 311, and external threads are provided on the outer wall of the pull rod 4, so that the pull rod 4 is threadedly connected to the first connecting rod 2211 and the pressing plate 311, thereby achieving the connection between the second connecting rod 2212 and the pressing plate 311.

[0103] In an exemplary embodiment, the present application has no limitation on the locking member 5, as long as it can connect the pull rod 4 and the second connecting rod 2212. For example, the locking member 5 can be a bolt.

[0104] Combine Figure 1-9 Describe the workflow of the sample tube installation equipment for this application:

[0105] When installing the sample tube 7, the pressure plate 311 is in the second position and the sealing ring is in its initial state. The sample tube 7 is inserted through the second installation channel, the skeleton oil seal 33, the sealing ring, and finally into the first installation channel 121 until the tube mouth of the sample tube 7 abuts against the stop structure formed by the inner diameter difference between the first channel 1211 and the second channel 1212.

[0106] After the sample tube 7 is installed, the cylinder 212 drives the quick-insert 211 to move within the guide channel 2131 from the notched end toward the closed end. Because the guide member 223 abuts the transition zone 2112, the movement of the quick-insert 211 is converted by the guide member 223 into movement of the first connecting rod 2211 away from the sealing assembly 3. At this point, the elastic member is compressed, and the rebound force of the elastic member causes the second connecting rod 2212 to drive the pressure plate 311 from the second position toward the first position. During this movement, the second connecting sleeve 3121 and the first pressing member 123 compress the sealing ring, achieving a tight seal around the sample tube 7.

[0107] After the test is completed, the cylinder 212 drives the quick-insert 211 in the opposite direction, moving it from the closed end toward the notched end within the guide channel 2131. This movement of the quick-insert 211 is then converted, via the guide member 223, into movement of the first connecting rod 2211 toward the sealing assembly 3. At this point, the elastic member is stretched, and the rebound force of the elastic member causes the second connecting rod 2212 to drive the pressure plate 311 from the first position back to the second position, releasing the compression exerted on the sealing ring by the second connecting sleeve 3121 and the first pressing member 123, allowing the sealing ring to return to its original state, thereby facilitating the removal of the sample tube 7.

[0108] In addition, the present application also provides an adsorption instrument, which includes the sample mounting device described in any of the above embodiments.

[0109] Those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims of this application, any of the claimed embodiments may be used in any combination.

[0110] Thus far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A sample tube installation device, characterized in that: The sample tube installation device includes: A mounting joint (1), wherein a first mounting channel (121) is provided on the mounting joint (1) along a first direction, one end of the first mounting channel (121) is used for plugging the sample tube (7), and the other end is used for connecting to an air inlet and outlet mechanism in the adsorption instrument; A movable component (2), the movable component (2) being arranged on the mounting joint (1); A sealing assembly (3), wherein the sealing assembly (3) is arranged on the movable assembly (2) and is provided with a second installation channel corresponding to and connected to the first installation channel (121); the sealing assembly (3) is configured to be movable between a first position and a second position along the first direction under the drive of the movable assembly (2); when the sealing assembly (3) moves to the first position, it cooperates with the installation joint (1) to compress and seal the sample tube (7) passing through the second installation channel and installed in the first installation channel (121); when the sealing assembly (3) moves to the second position, it disengages from the installation joint (1) to facilitate the disassembly and assembly of the sample tube (7).

2. The sample tube installation device according to claim 1, characterized in that: A third installation channel (111) is provided on the installation joint (1) along the first direction; and The movable assembly (2) comprises a driving assembly (21) and a quick-insert lifting assembly (22), wherein the driving assembly (21) is arranged on a side of the mounting joint (1) away from the sealing assembly (3); the quick-insert lifting assembly (22) comprises a rod (221), wherein the rod (221) is inserted into the third mounting channel (111), and its two ends along the first direction respectively extend out of the third mounting channel (111); one end of the rod (221) is connected to the driving assembly (21), and the other end is connected to the sealing assembly (3), so that the sealing assembly (3) can move between the first position and the second position along the first direction under the action of the driving assembly (21) and the rod (221).

3. The sample tube installation device according to claim 2, characterized in that: The driving assembly (21) comprises a quick plug-in unit (211) and a driving member connected to the quick plug-in unit (211), the quick plug-in unit (211) being arranged on a side of the mounting joint (1) away from the sealing assembly (3) and having a first connecting structure arranged thereon; and A second connection structure is provided at one end of the rod (221) away from the sealing assembly (3), and the second connection structure cooperates with the first connection structure so that when the quick plug (211) moves under the action of the driving member, it drives the sealing assembly (3) on the rod (221) to move between the first position and the second position.

4. The sample tube installation device according to claim 3, characterized in that: The first connecting structure comprises an adjusting hole (2111) and a transition zone (2112); the adjusting hole (2111) is capable of allowing the rod (221) to pass through and enabling the quick plug-in unit (211) to move relative to the rod (221) along the length direction of the adjusting hole (2111); the transition zone (2112) is located on the side of the quick plug-in unit (211) away from the sealing assembly (3) and corresponds to the position of the adjusting hole (2111); the size from the transition zone (2112) to the side of the quick plug-in unit (211) close to the sealing assembly (3) gradually changes along the length direction of the adjusting hole (2111); the second connecting structure comprises a guide member (223) abutting against the transition zone (2112); the guide member (223) is capable of moving along the transition zone (2112) when the driving member drives the quick plug-in unit (211) to move, thereby driving the sealing assembly (3) to move between the first position and the second position; or The first connection structure is a transition zone (2112) located on the side of the quick plug-in unit (211) away from the sealing assembly (3), and the size from the transition zone (2112) to the side of the quick plug-in unit (211) close to the sealing assembly (3) gradually changes along the length direction of the adjustment hole (2111); the second connection structure is a connection hole provided on the rod (221) and capable of allowing the quick plug-in unit (211) to pass through, and the quick plug-in unit (211) moves under the drive of the driving member, and when the transition zone (2112) passes through the connection hole, the sealing assembly (3) is driven to move between the first position and the second position.

5. The sample tube installation device according to claim 4, characterized in that: The transition zone (2112) is an inclined surface or a curved surface.

6. The sample tube installation device according to any one of claims 3 to 5, characterized in that: The driving assembly (21) further comprises a quick-insertion guide member (213), the quick-insertion guide member (213) being arranged on a side of the mounting joint (1) away from the sample tube (7), and forming a guide channel (2131) therein; the quick-insertion member (211) is movably arranged in the guide channel (2131), so that the quick-insertion member (211) can move in the guide channel (2131) under the driving of the driving member; and The guide channel (2131) is in communication with the third installation channel (111), and the second connection structure is located in the guide channel (2131).

7. The sample tube installation device according to claim 2, characterized in that: The rod member (221) includes a first connecting rod (2211) and a second connecting rod (2212), wherein the second connecting rod (2212) is inserted into the third installation channel (111), and both ends thereof extend out of the third installation channel (111); one end of the second connecting rod (2212) is connected to the first connecting rod (2211), and the other end is provided with the sealing assembly (3); and One end of the first connecting rod (2211) away from the sealing assembly (3) is connected to the driving assembly (21).

8. The sample tube installation device according to claim 7, characterized in that: The quick-insert lifting assembly (22) further includes an elastic member; and The second connecting rod (2212) is a sleeve structure, a portion of the first connecting rod (2211) is arranged inside the second connecting rod (2212), and the other portion extends outside the second connecting rod (2212) and is connected to the driving assembly (21); an elastic member is provided on the first connecting rod (2211) located inside the second connecting rod (2212), and two ends of the elastic member along the first direction are respectively connected to a first limiting member (22111) on the first connecting rod (2211) and a second limiting member (22121) on the second connecting rod (2212); or The first connecting rod (2211) is a sleeve structure, a part of the second connecting rod (2212) is arranged inside the second connecting rod (2212), and the other part extends out of the second connecting rod (2212) and is connected to the sealing assembly (3); an elastic member is provided on the second connecting rod (2212) located inside the first connecting rod (2211), and the two ends of the elastic member along the first direction are respectively connected to the first limiting member (22111) on the first connecting rod (2211) and the second limiting member (22121) on the second connecting rod (2212).

9. The sample tube installation device according to claim 8, characterized in that: The first limiting member (22111) is movably arranged on the first connecting rod (2211); and / or The second limiting member (22121) is movably arranged on the second connecting rod (2212).

10. The sample tube installation device according to claim 1, characterized in that: The number of the first installation channel (121) is at least one.

11. The sample tube installation device according to claim 1, characterized in that: The first installation channel (121) comprises a first channel (1211) and a second channel (1212) that are interconnected, the first channel (1211) being close to the sealing assembly (3) and having an inner diameter larger than that of the second channel (1212) for inserting the sample tube (7); the inner diameter of the second channel (1212) being smaller than the outer diameter of the sample tube (7) and for connecting to the air inlet and outlet mechanism, the difference between the inner diameters of the first channel (1211) and the second channel (1212) forming a limit structure for limiting the insertion depth of the sample tube (7); or A third limiting member for limiting the insertion depth of the sample tube (7) is provided in the first installation channel (121).

12. The sample tube installation device according to claim 1, characterized in that: The sealing assembly (3) comprises a sealing plate (31) and an elastic sealing member (32); the sealing plate (31) is provided with the second mounting channel and is connected to the movable assembly (2); the elastic sealing member (32) is located on a side of the sealing plate (31) close to the mounting joint (1) and can be sleeved on the sample tube (7), so that when the sealing plate (31) moves from the second position to the first position, it cooperates with the mounting joint (1) to squeeze the elastic sealing member (32), thereby pressing and sealing the sample tube (7).

13. The sample tube installation device according to claim 12, characterized in that: The mounting joint (1) is provided with a first plug-in structure penetrated by the first mounting channel (121); and The sealing plate (31) is provided with a second plug-in structure which is penetrated by the second installation channel and plug-fits with the first plug-in structure; when the first plug-in structure and the second plug-in structure are plug-fitted, the elastic sealing component (32) can be squeezed.

14. The sample tube installation device according to claim 13, characterized in that: The first plug-in structure is a first connecting sleeve (122) and a first pressing member (123), and the second plug-in member is a second connecting sleeve (3121); the first connecting sleeve (122) is sleeved outside the second connecting sleeve (3121), the first pressing member (123) is arranged at an end of the first connecting sleeve (122) away from the sealing plate (31) and is connected to the mounting joint (1); the elastic sealing member (32) is located between the first pressing member (123) and the second connecting sleeve (3121); or The first plug-in structure is a first connecting sleeve (122), and the second plug-in component is a second connecting sleeve (3121) and a second pressing component (3122); the second connecting sleeve (3121) is sleeved outside the first connecting sleeve (122), and the second pressing component (3122) is arranged at an end of the second connecting sleeve (3121) away from the mounting joint (1) and is connected to the sealing plate (31); the elastic sealing component (32) is arranged between the second pressing component (3122) and the first connecting sleeve (122).

15. The sample tube installation device according to any one of claims 12 to 14, characterized in that: The sealing plate (31) includes a pressing plate (311) and a connecting plate (312), wherein the connecting plate (312) is arranged on a side of the pressing plate (311) close to the mounting joint (1), and is provided with the second mounting channel and a through hole capable of allowing the movable end of the movable component (2) to pass therethrough, so that the movable end of the movable component (2) is connected to the pressing plate (311); the second mounting channel passes through the pressing plate (311), and the elastic sealing member (32) is located on a side of the connecting plate (312) close to the mounting joint (1).

16. The sample tube installation device according to claim 15, characterized in that: When a second plug-in structure is provided on the sealing plate (31), the second plug-in structure is provided on the pressing plate (311) or the connecting plate (312).

17. The sample tube installation device according to claim 12, characterized in that: The sealing assembly (3) further includes a skeleton oil seal (33); and An assembly groove is provided on the inner wall of the sealing plate (31), and the skeleton oil seal (33) is installed in the assembly groove.

18. The sample tube installation device according to claim 1, characterized in that The sample tube installation device further comprises a pull rod (4), and the pull rod (4) connects the movable component (2) and the sealing component (3).

19. The sample tube installation device according to claim 1, wherein: The mounting joint (1) comprises a mounting block (11) and a joint (12); the joint (12) is arranged on a side of the mounting block (11) close to the sealing assembly (3), and is provided with the first mounting channel (121).

20. The sample tube installation device according to claim 19, wherein: The number of the joint (12) is at least one.

21. An adsorption instrument, characterized in that The adsorption instrument comprises the sample tube installation device according to any one of claims 1-20.

Images