Sample support for gas phase mass spectrometer

Abstract

The utility model relates to a sample support for a gas phase mass spectrometer, the sample support comprises a frame plate, a mounting frame and a sample bottle, the mounting frame is arranged on the top wall of the frame plate, the bottom wall of the frame plate is symmetrically provided with clamping assemblies which cooperate with each other to clamp the sample bottle, and a stirring assembly is arranged between the frame plate and the mounting frame; the clamping assembly comprises a sliding frame embedded in the plate bottom wall, a threaded rod rotationally arranged on the sliding frame, a driving piece driving the threaded rod to rotate in a reciprocating mode, a sliding block connected to the threaded rod in a threaded mode, a clamping block arranged on the sliding block, an elastic pressing block arranged on the clamping block and a control button arranged on the frame plate. The sliding block is arranged on the threaded rod in a sliding mode in the direction close to or away from the sample bottle, the control button is electrically connected with the driving piece, and the pressure sensor is in signal connection with the control button. The device has the effects of conveniently clamping and fixing the sample bottle and improving the detection efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of mass spectrometers, and in particular to a sample holder for a gas phase mass spectrometer. Background Art

[0002] A gas mass spectrometer is an instrument that combines the high-efficiency separation capability of a gas chromatograph with the unique selectivity, sensitivity, relative molecular mass and molecular structure identification capabilities of a mass spectrometer. Its principle is that a multi-component mixture is vaporized and separated by a gas chromatograph, and each component enters the mass spectrometer in order of retention time. The gas molecules of each component are ionized in the ion source to generate positively charged ions with different mass-to-charge ratios, which are then formed into ion beams under the action of an accelerating electric field. After entering a mass analyzer, they are separated according to their mass-to-charge ratios. Finally, the electrical signals converted from the ion beams are detected by a detector and sent to a computer. After being processed by a computer, these signals can be used to obtain chromatograms, mass spectra and other information.

[0003] The existing Chinese patent with application number 201920681710.3 discloses a sample holder for a gas phase mass spectrometer, including a holder body, a sliding mechanism and a stirring mechanism. A slide groove is provided on the middle surface of the holder body, and the sliding mechanism is located on the middle outer surface of the holder body. The sliding mechanism includes a slide groove, and a ball is movably installed on the outer surface of the slide groove. A fixed frame is slidably installed on the outer surfaces of both sides of the slide groove, and an arc frame is fixedly connected to the middle outer surface of the fixed frame; the slide groove is provided to facilitate the installation of the ball and the sliding of the fixed frame, and the balls and the fixed frame are provided to facilitate adjustment according to different sizes of sample bottles, and the arc frame is provided to facilitate the fit and clamping with the sample bottle, and the stirring hand wheel is provided to drive the entire stirring mechanism to stir the sample inside the sample bottle to prevent the sample from settling, and the agitator is provided to facilitate the extension and storage of the stirring mechanism, bringing better prospects for use.

[0004] With respect to the above-mentioned prior art, the inventor believes that the method of clamping and fixing the sample bottle by the above-mentioned sample holder when in use is too complicated, resulting in low working efficiency, and there is room for improvement. Utility Model Content

[0005] In order to facilitate the clamping and fixing of a sample bottle and improve detection efficiency, the present application provides a sample holder for a gas mass spectrometer.

[0006] The sample holder for a gas phase mass spectrometer provided in the present application adopts the following technical solution:

[0007] A sample holder for a gas mass spectrometer, comprising a frame plate, a mounting frame and a sample bottle, wherein the mounting frame is arranged on the top wall of the frame plate, clamping components that cooperate with each other to clamp the sample bottle are symmetrically arranged on the bottom wall of the frame plate, and a stirring component is arranged between the frame plate and the mounting frame;

[0008] The clamping assembly includes a sliding frame embedded in the bottom wall of the frame, a threaded rod rotatably arranged on the sliding frame, a driving member driving the threaded rod to reciprocate, a slider threadedly connected to the threaded rod, a clamping block arranged on the slider, an elastic clamping block arranged on the clamping block, a control button arranged on the frame, and a pressure sensor arranged on the elastic clamping block. The slider is slidably arranged on the threaded rod in a direction approaching or away from the sample bottle, the control button is electrically connected to the driving member, and the pressure sensor is signal-connected to the control button.

[0009] Optionally, a supporting assembly is provided on the bottom wall of the clamping block, and the supporting assembly includes a sliding block slidably provided on the bottom wall of the clamping block, an elastic member driving the sliding block to slide, and a supporting member provided on the side of the sliding block facing the sample bottle.

[0010] Optionally, a side of the support member close to the sample bottle is chamfered.

[0011] Optionally, a rubber pad is provided on the upper surface of the support member.

[0012] Optionally, the stirring assembly includes a stirring rod rotatably arranged on the mounting frame, a driving motor arranged on the mounting frame to drive the stirring rod to rotate, a plurality of stirring blades arranged on the stirring rod, and a coupling connecting the stirring rod and the output shaft of the driving motor, and the stirring rod passes through the frame plate and extends into the sample bottle.

[0013] Optionally, a lifting member for driving the stirring assembly to rise and fall is provided on the mounting frame.

[0014] Optionally, a plurality of mounting plates are provided on the stirring rod, the stirring blades are provided corresponding to the mounting plates, and the stirring blades are detachably provided on the mounting plates.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. When the utility model is used, the sample bottle is placed under the rack, and then the driving member is started by the control button to drive the threaded rod to rotate back and forth, and then the slider threadedly connected to the threaded rod drives the clamping block to slide back and forth. When the sample bottle needs to be clamped, the two sliders are driven to drive the clamping blocks to move in a direction approaching each other, and the elastic pressing block on the clamping block gradually approaches the sample bottle until the sample bottle is pressed between the two elastic pressing blocks, and the pressure between the two elastic pressing blocks is monitored in real time by the pressure sensor. When the pressing force reaches a certain level, the pressure sensor sends a signal to the control button, thereby stopping the driving member from working to complete the clamping. The entire clamping process is convenient and fast, which greatly improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This embodiment mainly embodies the axial side schematic diagram of the overall structure of a sample holder for a gas phase mass spectrometer. Figure 1 ;

[0018] Figure 2 This embodiment mainly embodies the axial side schematic diagram of the overall structure of a sample holder for a gas phase mass spectrometer. Figure 2 ;

[0019] Figure 3 yes Figure 2 The enlarged schematic diagram of the middle A part;

[0020] Figure 4 yes Figure 2 Enlarged schematic diagram of part B in the middle.

[0021] Figure numerals: 1. frame; 2. clamping assembly; 21. sliding frame; 22. threaded rod; 23. driving member; 24. control button; 25. slider; 26. clamping block; 27. elastic pressure block; 28. pressure sensor; 3. mounting frame; 4. stirring assembly; 41. stirring rod; 42. driving motor; 43. stirring blade; 44. coupling; 5. supporting assembly; 51. sliding block; 52. elastic member; 53. supporting member; 6. sliding groove; 7. chamfer; 8. rubber pad; 9. mounting plate; 10. lifting member; 11. mounting seat; 12. sample bottle. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0023] Unless otherwise defined, the technical terms or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which this application belongs. The words "one" or "an" and the like used in the patent application specification and claims of this application do not indicate a quantity limitation, but indicate the existence of at least one.

[0024] The following is combined with Figure 1-4 This application is described in further detail.

[0025] The embodiment of the present application discloses a sample holder for a gas phase mass spectrometer.

[0026] Reference Figure 1 and Figure 2 A sample holder for a gas mass spectrometer includes a frame plate 1, a clamping assembly 2, a mounting frame 3 and a stirring assembly 4. The clamping assembly 2 is mounted on the bottom wall of the frame plate 1 and has two symmetrically mounted groups for automatically clamping a sample bottle 12. The stirring assembly 4 is mounted on the frame plate 1 through the mounting frame 3 to stir the sample in the sample bottle 12.

[0027] Reference Figure 1 and Figure 2 The clamping assembly 2 includes a sliding frame 21, a threaded rod 22, a driving member 23, a control button 24, a slider 25 and a clamping block 26. In this embodiment, the driving member 23 is a single-phase motor. The sliding frame 21 is embedded and installed on the bottom wall of the frame plate 1. The threaded rod 22 is rotatably mounted in the sliding frame 21. The driving member 23 is fixedly installed in the sliding frame 21 by bolts and is coaxially fixedly connected to the threaded rod 22. The control button 24 is installed on the side wall of the frame plate 1 and is electrically connected to the driving member 23 to realize the control of the opening and closing and the steering of the driving member 23. The control of the opening and closing and the steering of the driving member 23 by the control button 24 is a prior art and will not be described in detail. The slider 25 is threadedly connected to the threaded rod 22 and is restricted from rotating by the inner wall of the sliding frame 21. The clamping block 26 is fixedly installed on the slider 25 by bolts to realize synchronous sliding with the slider 25.

[0028] In this embodiment, preferably, when the driving member 23 rotates forward, the two slide blocks slide in a direction approaching each other. When clamping the sample bottle 12, the sample bottle 12 is placed under the rack 1, and the driving member 23 is controlled to rotate forward by the control button 24. The driving member 23 drives the threaded rod 22 to rotate, and the slider 25 threadedly connected to the threaded rod 22 converts the spiral rotation of the threaded rod 22 into its own linear sliding motion in the direction close to the sample bottle 12. The slider 25 drives the clamping block 26 to slide synchronously, thereby clamping the sample bottle 12. The entire clamping process is convenient and fast, which greatly improves the detection efficiency.

[0029] Reference Figure 1 and Figure 2The clamping assembly 2 further includes an elastic pressing block 27 and a pressure sensor 28. In this embodiment, the elastic pressing block 27 is made of rubber. The elastic pressing block 27 is bonded and fixed on the side wall of the clamping block 26 facing the sample bottle 12. The pressure sensor 28 is embedded and installed on the side wall of the elastic pressing block 27 away from the clamping block 26. The pressure sensor 28 is connected to the control button 24 by signal and is pre-set with a pressure parameter. In this embodiment, the electrical connection between the pressure sensor 28 and the control button 24 is a prior art and will not be described in detail.

[0030] When clamping the sample bottle 12, the elastic clamping block 27 is driven by the clamping block 26 to approach the sample bottle 12 until the sample bottle 12 is clamped between the two elastic clamping blocks 27. When the clamping force reaches the setting parameter of the pressure sensor 28, the pressure sensor 28 sends a stop signal to the control button 24, and then the driving member 23 is turned off through the control button 24, thereby reducing the possibility of the driving member 23 over-rotating and crushing the sample bottle 12. At the same time, the setting of the elastic clamping block 27 further reduces the possibility of damage to the sample bottle 12 during the clamping process.

[0031] Reference Figure 2 and Figure 3 A support assembly 5 is installed on the bottom wall of the clamping block 26, and the support assembly 5 can support and clamp the bottom of the sample bottle 12, thereby improving the clamping stability of the sample bottle 12 and reducing the possibility of the sample bottle 12 slipping and falling;

[0032] The supporting assembly 5 includes a sliding block 51, an elastic member 52 and a supporting member 53. The sliding block 51 is slidably installed on the bottom wall of the clamping block 26. A sliding groove 6 for sliding the sliding block 51 is provided on the bottom wall of the clamping block 26. In the present embodiment, the sliding block 51 is a cylindrical block, the elastic member 52 is a spring, and the supporting member 53 is a rectangular block. One end of the elastic member 52 is welded and fixed to the inner wall of the sliding groove 6, and the other end is welded and fixed to the end face of the sliding block 51. The other end of the sliding block 51 extends out of the sliding groove 6. The supporting member 53 is welded and fixed to the end of the sliding block 51 extending out of the sliding groove 6. When clamping, the sliding block 51 is stretched in the direction away from the sliding groove 6, so that the sample bottle 12 is clamped between the bottom wall of the rack 1 and the upper wall of the supporting member 53. At this time, the elastic member 52 obtains elastic potential energy. When the sliding block 51 is released, the elastic force of the elastic member 52 pulls the sliding block 51 and the supporting member 53 in the direction close to the sliding groove 6 to achieve support.

[0033] Reference Figure 1 and Figure 2A chamfer 7 is provided on the upper surface of the support member 53 on the side close to the sample bottle 12, and a rubber pad 8 is bonded and fixed to the upper surface of the support member 53. The chamfer 7 plays a guiding role during support, reducing the possibility of the corners of the support member 53 damaging the sample bottle 12 or getting stuck, and the rubber pad 8 plays a buffering and protective role, reducing the possibility of the support member 53 damaging the sample bottle 12 during the support and pressing process.

[0034] Reference Figure 2 and Figure 4 The stirring assembly 4 includes a stirring rod 41, a driving motor 42, a stirring blade 43 and a coupling 44. In this embodiment, a plurality of stirring blades 43 are installed. The stirring rod 41 is cylindrical. The driving motor 42 is installed on the side of the mounting frame 3 facing the frame plate 1, and the output shaft of the driving motor 42 is arranged toward the sample bottle 12. The stirring rod 41 and the output shaft of the driving motor 42 are coaxially fixedly installed through the coupling 44. A plurality of mounting plates 9 corresponding to the number of stirring blades 43 are integrally formed on the stirring rod 41. The plurality of mounting plates 9 are spirally arranged on the stirring rod 41 along the axial direction of the stirring rod 41. The stirring blade 43 is fixedly installed on the mounting plate 9 by bolts. The stirring rod 41 and the stirring blade 43 penetrate the frame plate 1 and extend into the sample bottle 12 to stir the sample. The stirring blade 43 is detachable, which is convenient for cleaning the stirring blade 43. At the same time, when the stirring blade 43 is damaged, it can be replaced separately, thereby improving the practicality of the sample holder.

[0035] Reference Figure 1 and Figure 2 A lifting member 10 is fixedly installed on the side wall of the mounting frame 3 away from the frame plate 1 by bolts. In this embodiment, the lifting member 10 adopts a driving cylinder, and the driving motor 42 is fixedly installed on the lifting telescopic rod through the mounting seat 11. The driving motor 42 can slide in the direction close to or away from the sample bottle 12 on the driving member 23 of the lifting member 10, so as to extend the length of the stirring rod 41, so that the samples in the sample bottles 12 of different lengths can be stirred, thereby improving the adaptability and practicality of the sample holder.

[0036] The implementation principle of a sample holder for a gas mass spectrometer in an embodiment of the present application is as follows: when it is necessary to clamp the sample bottle 12, the sample bottle 12 is placed under the rack 1, and then the driving member 23 is started by the control button 24 to drive the threaded rod 22 to rotate forward, so that the slider 25 threadedly connected to the threaded rod 22 drives the clamping block 26 to slide in the direction close to the sample bottle 12, and the elastic pressing block 27 on the clamping block 26 gradually approaches the sample bottle 12 until the sample bottle 12 is pressed between the two elastic pressing blocks 27. The pressure sensor 28 pre-sets the pressure parameter, and the pressure between the two elastic pressing blocks 27 is monitored in real time by the pressure sensor 28. When the pressing force reaches the set parameter, the pressure sensor 28 sends a signal to the control button 24, so that the driving member 23 stops working to complete the clamping. The entire clamping process is convenient and fast, which greatly improves the detection efficiency.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sample holder for a gas phase mass spectrometer, comprising a holder plate (1), a mounting frame (3) and a sample bottle (12), characterized in that: The mounting frame (3) is arranged on the top wall of the frame plate (1), and clamping components (2) that cooperate with each other to clamp the sample bottle (12) are symmetrically arranged on the bottom wall of the frame plate (1), and a stirring component (4) is arranged between the frame plate (1) and the mounting frame (3); The clamping assembly (2) comprises a sliding frame (21) embedded in the bottom wall of the frame (1), a threaded rod (22) rotatably arranged on the sliding frame (21), a driving member (23) driving the threaded rod (22) to reciprocate, a sliding block (25) threadedly connected to the threaded rod (22), a clamping block (26) arranged on the sliding block (25), an elastic pressing block (27) arranged on the clamping block (26), a control button (24) arranged on the frame (1), and a pressure sensor (28) arranged on the elastic pressing block (27), wherein the sliding block (25) is slidably arranged on the threaded rod (22) in a direction approaching or away from the sample bottle (12), the control button (24) is electrically connected to the driving member (23), and the pressure sensor (28) is signal-connected to the control button (24).

2. The sample holder for a gas phase mass spectrometer according to claim 1, characterized in that: A supporting assembly (5) is arranged on the bottom wall of the clamping block (26), and the supporting assembly (5) comprises a sliding block (51) slidably arranged on the bottom wall of the clamping block (26), an elastic member (52) driving the sliding block (51) to slide, and a supporting member (53) arranged on the side of the sliding block (51) facing the sample bottle (12).

3. The sample holder for a gas phase mass spectrometer according to claim 2, characterized in that: A chamfer (7) is provided on a side of the support member (53) close to the sample bottle (12).

4. The sample holder for a gas phase mass spectrometer according to claim 2, characterized in that: A rubber pad (8) is provided on the upper surface of the support member (53).

5. The sample holder for a gas phase mass spectrometer according to claim 1, characterized in that: The stirring assembly (4) comprises a stirring rod (41) rotatably arranged on the mounting frame (3), a driving motor (42) arranged on the mounting frame (3) and driving the stirring rod (41) to rotate, a plurality of stirring blades (43) arranged on the stirring rod (41), and a coupling (44) connecting the stirring rod (41) and an output shaft of the driving motor (42); the stirring rod (41) penetrates the frame plate (1) and extends into the sample bottle (12).

6. The sample holder for a gas phase mass spectrometer according to claim 5, characterized in that: The mounting frame (3) is provided with a lifting member (10) for driving the stirring assembly (4) to rise and fall.

7. The sample holder for a gas phase mass spectrometer according to claim 5, characterized in that: A plurality of mounting plates (9) are arranged on the stirring rod (41), the stirring blades (43) are arranged corresponding to the mounting plates (9), and the stirring blades (43) are detachably arranged on the mounting plates (9).

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