Sealing device for organic element analysis of air sensitive sample

Abstract

The utility model discloses a sealing device for organic element analysis of air sensitive sample, which comprises a shell, a sample holder and a clamping mechanism, the top end of the sample holder is provided with a plurality of sample placing grooves which are sequentially arranged along the length direction of the sample holder, the clamping mechanism comprises a driving component and two clamping plates, the two clamping plates are connected with the driving component, and the driving component is connected with the sample placing grooves. The driving assembly is installed on the shell and comprises a torque wrench, a screw rod and two sliding blocks, the screw rod is arranged in the shell and rotationally connected with the shell, and a rotating connector is fixed to one end of the screw rod; and the torque wrench drives the rotary joint to drive the screw rod to rotate so as to drive the two clamping plates to move close to or far away from each other so as to simultaneously clamp and seal all tin cup openings on the sample rack. A plurality of tin cups can be placed on the sample holder at a time and sealed at the same time, the sample preparation efficiency is improved, the torque of the torque wrench can be adjusted according to the actual sealing effect, the required sealing effect is achieved, and the purpose of quantizing the sealing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of air-sensitive sample detection technology, and in particular to a sealing device for organic element analysis of air-sensitive samples. Background Technology

[0002] For organic element analysis of air-sensitive samples, it is usually necessary to first seal them in a glove box. After complete sealing, they are removed from the glove box and tested in an atmospheric environment to ensure that the samples are completely isolated from the air and avoid deterioration. Therefore, whether the samples can be completely sealed is crucial for the detection of air-sensitive samples and is the basis for accurate analysis.

[0003] Existing sealing devices are bulky (long operating handle and large sealing device body), making it inconvenient to enter and exit the glove box. They can only seal one sample at a time, and multiple parallel samples are needed for air-sensitive samples, resulting in low sample preparation efficiency. Moreover, repeated operations can easily lead to contamination, requiring the entire device to be disassembled for cleaning, which is inconvenient. Furthermore, it is unclear what clamping force is needed to seal the sample effectively with existing sealing devices, leading to inconsistent clamping forces used by different people. Insufficient force results in poor sealing, while excessive force is laborious.

[0004] Therefore, there is an urgent need for a new sealing device for the analysis of organic elements in air-sensitive samples to solve the above-mentioned technical problems. Utility Model Content

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the following problems: First, the existing sealing device is bulky, inconvenient to enter and exit the glove box, can only seal one sample at a time, has low sample preparation efficiency, and multiple operations are prone to contamination. After contamination, the entire device needs to be disassembled for cleaning, which is inconvenient to operate; Second, the existing sealing device does not know how much clamping force is needed to seal the sample, resulting in different clamping forces used by different people. Too little force will easily lead to poor sample sealing effect, while too much force will be laborious.

[0006] To this end, the present invention provides a sealing device for organic element analysis of air-sensitive samples, comprising a housing, a sample holder mounted on the housing, and a clamping mechanism. The top of the housing is an open structure. The top of the sample holder is provided with a plurality of sample placement slots arranged sequentially along the length of the sample holder for placing tin cups containing samples. The sample holder is detachably connected to the housing. The clamping mechanism includes a driving component and two clamping plates disposed within the housing. The two clamping plates are respectively located on both sides of the sample holder and connected to the driving component. The driving component is mounted on the housing and can drive the two clamping plates to move closer or further away from each other to simultaneously clamp and seal all the openings of the tin cups on the sample holder.

[0007] In the specific embodiment of the sealing device for organic element analysis of air-sensitive samples described above, the driving assembly includes a torque wrench, a screw, and two sliders. The screw is disposed inside the housing and rotatably connected thereto. The screw has two sections of threads with opposite helical directions. Each section of thread is threaded with one of the sliders. The two sliders are located on both sides of the sample holder and can move relatively closer or further apart in a straight line when the screw rotates. Each slider is detachably and fixedly connected with a clamping plate. One end of the screw extends through the housing to the outside and is fixed with a rotary joint that cooperates with the torque wrench. The torque wrench is used to drive the rotary joint to rotate the screw.

[0008] In the specific embodiment of the sealing device for organic element analysis of air-sensitive samples described above, the side wall of the clamping plate facing the sample holder is composed of an inclined surface and a vertical surface, and the clamping plate is detachably fixed to the top of the slider by a first screw.

[0009] In a specific embodiment of the sealing device for organic element analysis of air-sensitive samples described above, the sealing device further includes a handle, which is detachably and fixedly connected to the side wall of the housing opposite to the rotary joint.

[0010] In a specific embodiment of the sealing device for the analysis of organic elements in air-sensitive samples described above, the handle is threaded to the top corner of the side wall of the housing so that the end of the housing is not lifted by applying external force to the handle when rotating the screw with a torque wrench.

[0011] In a specific embodiment of the sealing device for organic element analysis of air-sensitive samples described above, a tray is detachably connected inside the housing. The tray is located below the sample holder, and a groove is provided on the tray. The width of the groove is greater than the width of the sample holder, and a sample placement slot is provided on the sample holder corresponding to the groove.

[0012] In a specific embodiment of the sealing device for organic element analysis of air-sensitive samples described above, a first limiting member is provided on the housing, and the sample holder is secured to the housing by the first limiting member.

[0013] In the specific embodiment of the sealing device for organic element analysis of air-sensitive samples described above, a socket is provided on one side wall of the housing, and a first slot is provided on the side wall of the housing opposite to the socket. One end of the sample holder can pass through the socket and be inserted into the first slot. The first limiting member is located outside the housing and is rotatably connected to the side wall of the housing where the socket is provided. During rotation, the first limiting member can block the sample holder to limit the movement of the sample holder relative to the socket to the outside of the housing.

[0014] In a specific embodiment of the sealing device for organic element analysis of air-sensitive samples described above, a second limiting member is provided on the housing, and the tray is secured to the housing by the second limiting member.

[0015] In the specific embodiment of the sealing device for organic element analysis of air-sensitive samples described above, an insertion hole is provided on the side wall of the housing opposite to the insertion port, and a second slot is provided on the inner side of the side wall of the housing opposite to the insertion hole. One end of the tray can pass through the insertion hole and be inserted into the second slot. The second limiting member is located on the outside of the housing and is rotatably connected to the side wall of the housing where the insertion hole is provided. During rotation, the second limiting member can block the tray to limit the tray from moving outward relative to the insertion hole of the housing.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The sample rack designed in this utility model can hold multiple tin cups at once and seal them simultaneously, which improves sample preparation efficiency. Moreover, the sample rack and the shell are designed to be detachable, so different sample racks can be replaced when testing different samples, avoiding cross-contamination between different samples caused by reusing the same sample rack. The sealing device designed in this utility model has a compact overall structure and small size, and can be entered and exited through the small door of the glove box, making it easy to operate.

[0018] 2. A detachable tray is installed under the sample rack, so that spilled samples can fall directly onto the tray, avoiding them from falling into the housing or even onto the screw. When cleaning, simply remove the tray from the side for cleaning, without having to disassemble the entire device, making it more convenient to use.

[0019] 3. This utility model features a rotary joint at the end of the screw for use with a torque wrench. During sealing, the screw is rotated by operating the torque wrench, causing the two clamping plates to move closer together to achieve a clamping and sealing effect. This operation is relatively labor-saving. The torque of the torque wrench can be adjusted according to the actual sealing effect until a satisfactory sealing effect is achieved. Once the torque of the torque wrench is adjusted to achieve the desired sealing effect, each sealing operation will indicate that the sealing is complete when the torque is reached. This achieves the goal of quantifying the sealing effect, eliminating the need for greater force to seal and avoiding the problem of poor sealing effect due to insufficient force. Attached Figure Description

[0020] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the overall structure of the sealing device for organic element analysis of air-sensitive samples provided by this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the sealing device for organic element analysis of air-sensitive samples provided by this utility model from another angle.

[0023] Figure 3 This is a schematic diagram of the internal structure of the sealing device for organic element analysis of air-sensitive samples provided by this utility model;

[0024] Figure 4 This is a schematic diagram showing the positional relationship between the tray and the sample holder;

[0025] Figure 5 This is a schematic diagram of the overall structure of a sealed device with a handle for analyzing organic elements in air-sensitive samples.

[0026] Figure 6 yes Figure 5 Another structural diagram from a different angle;

[0027] Figure 7 This is a schematic diagram of the structure of the first limiting block;

[0028] Figure 8 This is a schematic diagram of a structure where the first gap is designed in a U-shape.

[0029] List of reference numerals in the attached diagram:

[0030] 1. Housing; 2. Sample holder; 201. Sample placement slot; 3. Clamping plate; 4. Tray; 41. Groove; 5. Second limiting block; 6. Rotary joint; 7. First limiting block; 8. First slot; 9. Insertion port; 10. Screw; 11. Solder cup; 12. Slider; 13. First notch; 14. Second notch; 15. Insertion hole; 16. First screw; 17. Handle; 18. Threaded hole. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the use of terms such as "first" and "second" to define components is merely for the convenience of distinguishing the aforementioned components. Unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] This utility model relates to the field of air-sensitive sample detection technology, and in particular to a sealing device for organic element analysis of air-sensitive samples. The purpose is to solve the following problems: First, existing sealing devices are bulky, inconvenient to access in and out of glove boxes, can only seal one sample at a time, resulting in low sample preparation efficiency, and multiple operations easily lead to contamination, requiring the entire device to be disassembled for cleaning, which is inconvenient. Second, existing sealing devices do not clearly indicate the appropriate clamping force for sealing the sample, leading to different clamping forces used by different people; insufficient force results in poor sealing, while excessive force is laborious. To this end, the present invention provides a sealing device for organic element analysis of air-sensitive samples, comprising a housing, a sample rack mounted on the housing, and a clamping mechanism. The top of the housing is an open structure. The top of the sample rack has multiple sample placement slots arranged sequentially along the length of the sample rack for placing tin cups containing samples. The sample rack is detachably connected to the housing. The clamping mechanism includes a drive assembly and two clamping plates disposed within the housing. The two clamping plates are located on both sides of the sample rack and connected to the drive assembly. The drive assembly is mounted on the housing and can drive the two clamping plates to move closer or further apart to simultaneously clamp and seal all the openings of the tin cups on the sample rack. The sample rack designed in this invention can hold multiple tin cups at once and seal them simultaneously, improving sample preparation efficiency. The torque of the torque wrench can be adjusted according to the actual sealing effect until a satisfactory sealing effect is achieved. After adjusting the torque of the torque wrench to achieve a satisfactory sealing effect, each sealing operation reaches the required torque, indicating that the sealing is complete. This achieves the purpose of quantifying the sealing effect, eliminating the need for greater force for sealing and avoiding the problem of poor sealing effect due to insufficient force.

[0035] The sealing device for organic element analysis of air-sensitive samples provided in the embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0036] See Figure 1-3 This utility model provides a sealing device for organic element analysis of air-sensitive samples, including a housing 1, a sample holder 2 mounted on the housing 1, and a clamping mechanism. The top of the housing 1 is an open structure. The top of the sample holder 2 is provided with a plurality of sample placement slots 201 arranged sequentially along the length of the sample holder 2 for placing tin cups containing samples. The sample holder 2 is detachably connected to the housing 1. The clamping mechanism includes a drive assembly and two clamping plates 3 disposed in the housing 1. The two clamping plates 3 are respectively located on both sides of the sample holder 2 and connected to the drive assembly. The drive assembly is mounted on the housing 1 and can drive the two clamping plates 3 to move closer or further away from each other to simultaneously clamp and seal all the openings of the tin cups 11 on the sample holder 2.

[0037] Specifically, the housing 1 includes four side mounting plates, which are detachably and fixedly connected to each other to form a housing 1 with a rectangular inner cavity. For example, the housing 1 measures 8 cm × 7 cm × 5 cm, has a compact overall structure, is small in size, and can be easily accessed through the glove box compartment door. Furthermore, since the housing 1 is entirely detachable, it facilitates thorough cleaning after prolonged use.

[0038] In this application, the sample placement slot 201 is used to place the solder cup 11, and the solder cup 11 is used to place the sample. The number of sample placement slots 201 can be flexibly set according to design requirements. Preferably, the number of sample placement slots 201 is eight.

[0039] In one embodiment, see Figure 1 , Figure 3-4 The housing 1 is detachably connected to a tray 4, which is located below the sample holder 2. The width of the tray 4 is greater than that of the sample holder 2. This way, if a sample is spilled during the process of adding it to the tin cup 11, it can fall onto the tray 4. When cleaning, only the tray 4 needs to be cleaned, without disassembling the entire device.

[0040] Specifically, the tray 4 is provided with a groove 41, the width of which is greater than the width of the sample holder 2. The sample placement slot 201 is set on the sample holder 2 corresponding to the groove 41. During the sample addition process, any spilled sample falls into the groove 41. When the tray 4 is disassembled, the sample is prevented from falling into the housing 1, and the groove 41 acts as a barrier.

[0041] In one embodiment, a first limiting member is provided on the housing 1, and the sample holder 2 is secured to the housing 1 by the first limiting member.

[0042] In the specific implementation method, see [reference] Figure 2-3 The housing 1 has an insertion port 9 on one side wall and a first slot 8 on the side wall opposite to the insertion port 9. One end of the sample holder 2 can pass through the insertion port 9 and be inserted into the first slot 8. The first limiting member is located on the outside of the housing 1 and is rotatably connected to the side wall of the housing 1 where the insertion port 9 is located. During rotation, the first limiting member can block the sample holder 2 to limit the movement of the sample holder 2 relative to the insertion port 9 to the outside of the housing 1.

[0043] Specifically, the insertion port 9 can be a U-shaped structure. The first limiting member includes a first limiting block 7 and a first rotating shaft. The first rotating shaft is rotatably connected to the side wall of the housing 1 via a damping bearing. The first limiting block 7 is fixedly connected to the first rotating shaft. The top of the first limiting block 7 is provided with a first notch 13, so that during the rotation of the first limiting block 7, the end of the sample holder 2 can be inserted into the first notch 13 to block it, thus playing a limiting role. Figure 2 and Figure 7As shown, the first notch can prevent the sample holder 2 from moving relative to the insertion port 9 along its length. Of course, the first notch 13 can also be designed as a U-shape, such as... Figure 8 As shown, this restricts the displacement of the sample holder 2 in both the length and height directions. When installing the sample holder 2, it is inserted into the socket 9, then one end of the sample holder 2 is pushed into the first slot 8, and then the first limiting block 7 is rotated to insert the end of the sample holder 2 into the first notch, thus blocking the sample holder 2.

[0044] In one embodiment, a second limiting member is provided on the housing 1, and the tray 4 is secured to the housing 1 by the second limiting member.

[0045] In the specific implementation method, see [reference] Figure 1 and Figure 4 The housing 1 has a socket 15 on the side wall opposite to the socket 9. The housing 1 has a second slot on the inner side of the side wall opposite to the socket. One end of the tray 4 can pass through the socket and be inserted into the second slot. The second limiting member is located on the outside of the housing 1 and is rotatably connected to the side wall of the housing 1 where the socket is located. During rotation, the second limiting member can block the tray 4 to limit the tray 4 from moving outward relative to the socket.

[0046] Specifically, see Figure 1 The second limiting component includes a second limiting block 5 and a second rotating shaft. The second rotating shaft is rotatably connected to the side wall of the housing 1 via a damping bearing. The second limiting block 5 is fixedly connected to the second rotating shaft. The top of the second limiting block 5 is provided with a second notch 14. This allows the end of the sample holder 2 to be inserted into the second notch 14 and blocked during the rotation of the second limiting block 5, thus achieving a limiting function. Figure 1 As shown, the second notch 14 can prevent the tray 4 from moving relative to the socket along its length. The second limiting block 5 has the same structure as the first limiting block 7. When installing the tray 4, the tray 4 is inserted into the socket 15, and then one end of the tray 4 is pushed into the second slot. Then the second limiting block 5 is rotated so that the end of the tray 4 is inserted into the second notch to achieve the function of blocking the tray 4.

[0047] In the above embodiments, the sample holder 2 and tray 4 are restricted in the housing 1 or the restriction function is canceled by rotating the first limiting block 7 and the second limiting block 5. This operation method is simple and convenient.

[0048] In one embodiment, see Figure 3The driving assembly includes a torque wrench, a screw 10, and two sliders 12. The screw 10 is disposed inside and rotatably connected to the housing 1. The screw 10 has two sections of threads with opposite helical directions, and each section of thread is threadedly connected to a slider 12. The two sliders 12 are located on both sides of the sample holder 2 and can move relatively closer or further apart in a linear motion when the screw 10 rotates. A clamping plate 3 is detachably fixedly connected to each slider 12. One end of the screw 10 extends through the housing 1 to the outside and is fixed with a rotary joint 6 that mates with the torque wrench. The torque wrench is used to drive the rotary joint 6 to rotate the screw 10. The rotary joint 6 mates with the torque wrench, so that the screw 10 can be rotated by the rotary joint 6 driven by the torque wrench. Preferably, the cross-section of the rotary joint 6 is an equal hexagon.

[0049] Specifically, the sidewall of the clamping plate 3 facing the sample holder 2 consists of an inclined surface and a vertical surface, with the inclined surface located above the vertical surface. The inclined surfaces of the two clamping plates 3 expand the observation space, making it easier to observe the sealing condition of the tin cup 11 during the clamping and sealing process. The clamping plate 3 is detachably fixed to the top of the slider 12 by the first screw. This facilitates the removal of the clamping plate 3 for cleaning.

[0050] In this application, to ensure the slider moves linearly under the rotational motion of the screw, the length of the slider is close to the length of the inner cavity of the housing to prevent the slider from rotating with the screw. Alternatively, the length of the clamping plate can be made close to the length of the inner cavity of the housing to prevent the slider from rotating with the screw. The gap between the length of the clamping plate and the length of the inner cavity of the housing can be flexibly set according to the actual situation, for example, the length of the clamping plate can be 1mm smaller than the length of the inner cavity of the housing. Of course, this is just an example, and other structures can be used to achieve linear motion of the slider relative to the housing. This application does not make specific limitations, and can be flexibly designed according to actual requirements without departing from the basic principle of this utility model.

[0051] In the above embodiment, during sealing, the screw 10 is rotated by operating a torque wrench, which drives the two clamping plates 3 to move closer to each other to achieve sealing. The operation is relatively labor-saving. Moreover, when using a torque wrench for sealing, the torque can be adjusted according to the actual sealing effect until a satisfactory sealing effect is achieved. At this point, the torque of the torque wrench is adjusted to this torque value. The next time the torque wrench is used to reach this torque value, an alarm will be triggered to remind the staff to stop and not to continue to apply force. This achieves the purpose of quantifying the sealing effect, eliminating the need to use more force for sealing and avoiding the problem of poor sealing effect due to insufficient force.

[0052] In one embodiment, the sealing device further includes a handle 17, which is detachably fixed to the side wall of the housing 1 opposite to the rotary joint 6.

[0053] For example, such as Figure 5-6The handle 17 is threaded onto the top corner of the housing sidewall to prevent the end of the housing from prying up when an external force is applied to the handle during the rotation of the screw using a torque wrench. The handle is threaded onto... Figure 5-6 The corner end shown is the end away from the operator's torque wrench. When using the torque wrench to turn the screw, the other hand can hold down the handle to prevent the end of the housing away from the operator (the operator refers to the person using the sealing device) from being lifted up.

[0054] Specifically, a threaded hole 18 is provided on the side wall of the housing 1 opposite to the rotary joint 6. One end of the handle is inserted into the threaded hole 18 and threadedly connected to it for fixation. The axis of the handle can be perpendicular to the side wall or at a certain angle to the side wall, such as 45°, that is, the handle is tilted upward relative to the side wall of the housing, which is within the scope of protection of this application.

[0055] The specific operation of the sealing device of this utility model is as follows: After placing the sample in the tin cup 11, use a torque wrench to clamp the rotary joint 6, and press the handle 17 with the other hand. Then, drive the screw 10 to rotate through the torque wrench, so that the two sliders 12 drive the corresponding clamping plates 3 to move closer to each other until the two clamping plates 3 clamp the mouth of the tin cup 11 and achieve a seal. After the seal is completed, rotate the screw 10 in the opposite direction to move the two clamping plates 3 away from the sample holder 2 until the clamping plates 3 are completely separated from the sample holder 2. Then, manually rotate the first limiting block 7 to disengage the first notch on the first limiting block 7 from the sample holder 2. Then, the sample holder 2 can be pulled out from the insertion port 9 by pulling. If it is necessary to pull out the tray 4, simply rotate the second limiting block 5 to disengage the second notch on the second limiting block 5 from the end of the tray 4. In this way, the tray 4 can be pulled out from the insertion port to complete the disassembly operation.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealing device for organic elemental analysis of air-sensitive samples, characterized in that, The device includes a housing, a sample holder mounted on the housing, and a clamping mechanism. The top of the housing is open. The top of the sample holder has multiple sample placement slots arranged sequentially along the length of the sample holder for placing tin cups containing samples. The sample holder is detachably connected to the housing. The clamping mechanism includes a drive assembly and two clamping plates disposed within the housing. The two clamping plates are located on both sides of the sample holder and connected to the drive assembly. The drive assembly is mounted on the housing and can drive the two clamping plates to move closer or further apart to simultaneously clamp and seal all the openings of the tin cups on the sample holder.

2. The sealing device for organic elemental analysis of air-sensitive samples according to claim 1, characterized in that, The drive assembly includes a torque wrench, a screw, and two sliders. The screw is disposed inside the housing and rotatably connected thereto. The screw has two sections of threads with opposite helical directions. Each section of thread is threaded with a slider. The two sliders are located on both sides of the sample holder and can move relatively closer or further apart in a straight line when the screw rotates. Each slider is detachably and fixedly connected with a clamping plate. One end of the screw extends through the housing to the outside and is fixed with a rotary joint that mates with the torque wrench. The torque wrench is used to drive the rotary joint to rotate the screw.

3. The sealing device for organic elemental analysis of air-sensitive samples according to claim 1, characterized in that, The side wall of the clamping plate facing the sample holder is composed of an inclined surface and a vertical surface, and the clamping plate is detachably fixed to the top of the slider by a first screw.

4. The sealing device for organic elemental analysis of air-sensitive samples according to claim 2, characterized in that, The sealing device also includes a handle, which is detachably and fixedly connected to the side wall of the housing opposite to the rotary joint.

5. The sealing device for organic elemental analysis of air-sensitive samples according to claim 4, characterized in that, The handle is threaded to the top corner of the housing sidewall so that the end of the housing is not lifted when an external force is applied to the handle during the rotation of the screw using a torque wrench.

6. The sealing device for organic elemental analysis of air-sensitive samples according to claim 1, characterized in that, A tray is detachably connected inside the housing. The tray is located below the sample holder. The tray has a groove, the width of which is greater than the width of the sample holder. The sample placement slot is provided on the sample holder corresponding to the groove.

7. The sealing device for organic elemental analysis of air-sensitive samples according to claim 1, characterized in that, The housing is provided with a first limiting member, and the sample holder is secured to the housing by the first limiting member.

8. The sealing device for organic elemental analysis of air-sensitive samples according to claim 7, characterized in that, The housing has an insertion port on one side wall and a first slot on the side wall opposite to the insertion port. One end of the sample holder can pass through the insertion port and be inserted into the first slot. The first limiting member is located outside the housing and is rotatably connected to the side wall of the housing with the insertion port. During rotation, the first limiting member can block the sample holder to limit the movement of the sample holder relative to the insertion port to the outside of the housing.

9. The sealing device for organic elemental analysis of air-sensitive samples according to claim 6, characterized in that, The housing is provided with a second limiting member, and the tray is secured to the housing by the second limiting member.

10. The sealing device for organic elemental analysis of air-sensitive samples according to claim 9, characterized in that, The housing has a socket on the side wall opposite to the socket, and a second slot is provided on the inner side of the side wall opposite to the socket. One end of the tray can pass through the socket and be inserted into the second slot. The second limiting member is located on the outside of the housing and is rotatably connected to the side wall of the housing with the socket. During rotation, the second limiting member can block the tray to limit the tray from moving outward relative to the socket.

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