A mass spectrometer

Abstract

The present application relates to a mass spectrometer, belonging to the technical field of mass spectrometers, and includes a machine body, a mass spectrometer body, multiple delivery pipes, and a heat preservation device. The heat preservation device includes: a plurality of heat preservation units, which are respectively sleeved on the multiple delivery pipes and each internally provided with a heating cavity for heating; adjacent two heat preservation units are connected together by a connection component; a heat preservation mechanism, which is arranged on the machine body and used for heating the heating cavity. In this application, by respectively sleeving a plurality of heat preservation units on the multiple delivery pipes and starting the heat preservation mechanism to heat and keep warm the heating cavity, the sample located in the delivery pipe is heated and kept warm, thereby reducing the probability of the sample liquefying or even solidifying, and at the same time reducing the probability of the sample remaining in the delivery pipe and needing to be cleaned, so as to improve the detection effect and efficiency of the mass spectrometer.

Description

Technical Field

[0001] This application relates to the technical field of mass spectrometry instruments, and in particular, to a mass spectrometer. Background Art

[0002] A mass spectrometer, also known as a mass spectrograph, is an instrument for separating and detecting different isotopes.

[0003] Mass spectrometry instruments need to work in a vacuum environment. For a mass spectrometer alone, the samples that can be directly received must be gaseous. Therefore, liquid and solid substances must be heated and vaporized and then transported to the mass spectrometer through multiple delivery pipes for detection. However, the temperature of the delivery pipes is relatively low, so it is easy for the samples to liquefy or even solidify, reducing the detection effect of the mass spectrometer. Moreover, the liquefied or solidified samples remaining in the delivery pipes will also affect subsequent detections. It is necessary to clean them again before detecting again, which seriously prolongs the time spent on detection and reduces the detection efficiency of the mass spectrometer. Summary of the Invention

[0004] In order to improve the detection effect and efficiency of a mass spectrometer, this application provides a mass spectrometer.

[0005] A mass spectrometer provided by this application adopts the following technical solutions:

[0006] A mass spectrometer includes a body, a mass spectrometer main body provided on the body, and multiple delivery pipes provided on the mass spectrometer main body and used for transporting gaseous samples. A heat preservation device for heating and keeping warm the samples in the multiple delivery pipes is provided on the body. The heat preservation device includes:

[0007] Multiple heat preservation units. Each of the multiple heat preservation units is sleeved on one of the multiple delivery pipes and has a heating cavity for heating inside. Adjacent two heat preservation units are connected together by a connection component;

[0008] A heat preservation mechanism, which is provided on the body and used for heating the heating cavity.

[0009] By adopting the above technical solutions, the multiple heat preservation units are respectively sleeved on the multiple delivery pipes. Therefore, during the process that the samples are vaporized and enter the delivery pipes and are transported to the mass spectrometer main body, the heat preservation mechanism starts to heat and keep warm the heating cavity, so as to heat and keep warm the samples located in the delivery pipes, thereby reducing the probability of sample liquefaction or even solidification, and at the same time reducing the probability that the samples remain in the delivery pipes and need to be cleaned, so as to improve the detection effect and efficiency of the mass spectrometer.

[0010] Optionally, the heat preservation mechanism includes:

[0011] An inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are respectively arranged at both ends of the heat preservation unit and are used for inputting and outputting the heat preservation medium into the heating cavity, the flow direction of the heat preservation medium in the heating cavity is opposite to the moving direction of the sample, and the connecting component connects the outlet pipe and the inlet pipe located on two heat preservation units together;

[0012] A control component, the control component is arranged on the machine body and is communicated with the inlet pipe and the outlet pipe and is used for inputting and recycling the heat preservation medium.

[0013] By adopting the above technical solution, when the control component is started, the heat preservation medium enters the heating cavity through the inlet pipe, so as to realize heating and heat preservation of the gas. Then the heat preservation medium is output through the outlet pipe, and then the heat preservation medium enters the heating cavity of the next heat preservation unit through the connecting component, so as to realize conveying the heat preservation medium to the heating cavities of multiple heat preservation units. Finally, after the heat preservation medium is output through the outlet pipe, it flows back to the control component for recycling, so that the structure is simple. At the same time, the temperature of the sample in the conveying pipe becomes lower and lower as it moves. Therefore, the heat preservation medium with a higher temperature first heats the sample with a lower temperature, thereby further improving the heat preservation effect on the sample and improving the detection effect and efficiency of the mass spectrometer.

[0014] Optionally, the control component:

[0015] A control box, the control box is arranged on the machine body and is filled with the heat preservation medium, and the outlet pipe is communicated with the control box for the heat preservation medium to flow back;

[0016] A control pump, the control pump is arranged on the machine body and is communicated with the control box and the inlet pipe.

[0017] By adopting the above technical solution, when the control pump is started, the heat preservation medium enters the heating cavity through the inlet pipe, and finally the heat preservation medium flows back to the control box through the outlet pipe for recycling, so as to realize the input and recycling of the heat preservation medium.

[0018] Optionally, the connecting component includes:

[0019] Two clamping groups, the two clamping groups are arranged at both ends of the heat preservation unit and are respectively used for clamping the inlet pipe and the outlet pipe located on adjacent two heat preservation units;

[0020] A connecting pipe, the connecting pipe is inserted and arranged on the inlet pipe and the outlet pipe of adjacent two heat preservation units.

[0021] By adopting the above technical solution, two clamping groups respectively clamp the inlet pipe and the outlet pipe of adjacent heat preservation units, so as to fixedly connect the adjacent two heat preservation units together. At the same time, the connecting pipe is inserted and arranged on the inlet pipe and the outlet pipe, and the two fixedly connected heat preservation units also position the connecting pipe, improving the stability of the connecting pipe, and also improving the stability of the heat preservation unit during heat preservation, improving the heat preservation effect on the sample, and improving the detection effect and efficiency of the mass spectrometer.

[0022] Optionally, the heat preservation unit is composed of two semi-circular heat preservation pipes, and the two heat preservation pipes cooperate to form a heating cavity. The clamping group is composed of two clamping blocks respectively arranged on the two heat preservation pipes, and a clamping screw for positioning is threadedly connected to the two clamping blocks.

[0023] By adopting the above technical solution, turn the clamping screw to make the two clamping blocks move away from each other, so that the two heat preservation pipes are separated from each other, and then the heat preservation pipes can be removed from the conveying pipe. Then, move the new two heat preservation pipes close to and abut against each other, so that the inlet pipe or the outlet pipe is located between the two clamping blocks, and the conveying pipe passes through between the two heat preservation pipes. Turn the clamping screw and thread it into the two clamping blocks to fixedly connect the two heat preservation pipes together, and the two clamping blocks clamp the inlet pipe or the outlet pipe. At the same time, when connecting adjacent heat preservation units, it is not necessary to put the inlet pipe or the outlet pipe in, thus improving the convenience of replacing and repairing the heat preservation structure, and improving the detection effect and efficiency of the mass spectrometer.

[0024] Optionally, the inlet pipe and the outlet pipe are bent, and one ends of the inlet pipe and the outlet pipe on adjacent two heat preservation units are arranged oppositely. On the opposite side walls of the two clamping blocks, there are clamping surfaces that fit the inlet pipe and the outlet pipe.

[0025] By adopting the above technical solution, the bent shape reduces the space occupied by the inlet pipe, the outlet pipe and the connecting pipe. At the same time, the clamping surface improves the positioning effect on the inlet pipe and the outlet pipe, and improves the detection efficiency and effect of the mass spectrometer.

[0026] Optionally, a sample heating mechanism is arranged on the machine body, and the sample heating mechanism includes:

[0027] A sample bottle, which is used to hold the sample and is detachably connected to the conveying pipe through a fixing component;

[0028] A heating component, which is arranged on the machine body and is used to heat and vaporize the sample in the sample bottle.

[0029] By adopting the above technical solution, the sample is placed into the sample bottle, and then the sample bottle is fixedly connected to the delivery pipe. Then, the heating component is activated to heat and vaporize the sample in the sample bottle, and the vaporized sample enters the mass spectrometer through the delivery pipe for detection, thereby reducing the probability of the sample liquefying or even solidifying, and improving the detection effect and efficiency of the mass spectrometer.

[0030] Optionally, the fixing component includes:

[0031] A first solenoid tube, which is arranged on the machine body and connected to the delivery pipe;

[0032] A second solenoid tube, which is arranged on the sample bottle and threadedly connected to the first solenoid tube for positioning.

[0033] By adopting the above technical solution, turning the sample bottle drives the second solenoid tube to rotate, so that the second solenoid tube disengages from the first solenoid tube. Therefore, the sample bottle can be removed, and then the sample to be tested is placed in. Then, the second solenoid tube is extended into the first solenoid tube, and the sample bottle is turned to threadedly connect the second solenoid tube to the first solenoid tube, thereby realizing the replacement of the sample bottle.

[0034] Optionally, the heating component includes:

[0035] A heat insulation cover, which is arranged on the machine body and used for heat insulation. The first solenoid tube is arranged on the heat insulation cover and both ends are located inside and outside the heat insulation cover, and the sample bottle is located inside the heat insulation cover;

[0036] A heating tube, which is arranged on the control pump and passes through the heat insulation cover and extends into the heat insulation cover and is communicated with the control box. The heating tube inside the heat insulation cover is spirally wound around the periphery of the sample bottle.

[0037] By adopting the above technical solution, when the control pump is activated, the heat preservation medium flows back to the control box after passing through the heating tube, and the heating tube is wound around and wraps the sample bottle, thereby increasing the contact area between the heating tube and the sample. At the same time, the heat insulation cover isolates the heat inside, reducing the heat loss, thereby realizing the heating of the sample bottle located inside the heat insulation cover, vaporizing the sample, improving the heating efficiency of the sample, and improving the detection effect and efficiency of the mass spectrometer.

[0038] Optionally, a heat insulation block for facilitating the application of force is arranged on the sample bottle, and the heat insulation block presses against the outer side wall of the heat insulation cover for positioning.

[0039] By adopting the above technical solution, the heat insulation block facilitates the application of force when turning the sample bottle, and the heat insulation block presses against the outer side wall of the heat insulation cover, so that the sample bottle is located inside the heat insulation cover, reducing the heat loss inside the heat insulation cover, improving the heating efficiency of the sample, and improving the detection efficiency of the mass spectrometer.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] By sleeving a plurality of heat preservation units on a plurality of conveying pipes respectively, the heat preservation mechanism is activated to heat and keep warm the heating cavity, so as to heat and keep warm the sample located in the conveying pipe, thereby reducing the probability of liquefaction or even solidification of the sample, and at the same time reducing the probability of the sample remaining in the conveying pipe and needing to be cleaned, so as to improve the detection effect and efficiency of the mass spectrometer. Description of the Drawings

[0042] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0043] Figure 2 is a partial structural schematic diagram of the present application, mainly showing the heat preservation device and the sample heating mechanism;

[0044] Figure 3 is a structural schematic diagram of the heat preservation unit, the inlet pipe, the outlet pipe and the connection assembly in the present application.

[0045] Reference numerals: 1, body; 11, mass spectrometer body; 12, conveying pipe; 13, fixed pipe; 2, heat preservation device; 21, heat preservation unit; 22, heat preservation pipe; 31, inlet pipe; 32, outlet pipe; 33, control assembly; 34, control box; 35, control pump; 36, addition pipe; 37, return pipe; 4, connection assembly; 41, clamping group; 411, clamping block; 42, connecting pipe; 44, clamping screw; 45, clamping surface; 51, sample bottle; 52, heat insulation block; 6, heating assembly; 61, heat insulation cover; 62, heating pipe; 7, fixing assembly; 71, first screw pipe; 72, second screw pipe. Detailed Description of the Invention

[0046] The following Figures 1-3 further describes the present application in detail.

[0047] The embodiment of the present application discloses a mass spectrometer.

[0048] Referring to Figure 1 , the mass spectrometer includes a body 1, a mass spectrometer body 11 arranged on the body 1, and a plurality of conveying pipes 12 arranged on the mass spectrometer body 11 and used for conveying gaseous samples. A sample heating mechanism communicated with the conveying pipes 12 and a heat preservation device 2 for heating and keeping warm the samples located in the plurality of conveying pipes 12 are arranged on the body 1.

[0049] Referring to Figure 1 and Figure 2, the heat preservation device 2 includes a plurality of heat preservation units 21 and a heat preservation mechanism. The plurality of heat preservation units 21 are arranged in one-to-one correspondence with the plurality of conveying pipes 12. The heat preservation unit 21 is sleeved on the outer side wall of the conveying pipe 12 and an annular heating cavity is provided inside. The heating cavity is used to heat and keep warm the sample in the conveying pipe 12. Two adjacent heat preservation units 21 are connected together by a connecting component 4, and the heating cavities on the two heat preservation units 21 are also communicated through the connecting component 4; the inner diameter of the heat preservation unit 21 is the same as the outer diameter of the conveying pipe 12.

[0050] Refer to Figure 1 and Figure 2 , the heat preservation mechanism is arranged on the machine body 1 and is used to heat the heating cavity. The heat preservation mechanism includes an inlet pipe 31 and an outlet pipe 32, and a control component 33. The inlet pipe 31 and the outlet pipe 32 are fixedly installed at both ends of the heat preservation unit 21 and are located on both sides of the heat preservation unit 21. And the inlet pipe 31 is located on the side of the outlet pipe 32 close to the mass spectrometer body 11. At the same time, both the inlet pipe 31 and the outlet pipe 32 are communicated with the heating cavity and are respectively used for inputting and outputting the heat preservation medium. The heat preservation medium can be hot water or hot oil, so that the moving direction of the heat preservation medium in the heating cavity is opposite to the moving direction of the sample.

[0051] Refer to Figure 2 and Figure 3 , the heat preservation unit 21 is formed by the cooperation of two identical semi-circular heat preservation pipes 22. Therefore, there are two heating cavities, inlet pipes 31 and outlet pipes 32, which are respectively arranged on the two heat preservation pipes 22 and cooperate to form. The connecting component 4 includes two clamping groups 41 and a connecting pipe 42. The two clamping groups 41 are respectively located at both ends of the heat preservation unit 21; the two clamping groups 41 are respectively arranged in one-to-one correspondence with the inlet pipe 31 and the outlet pipe 32. One of the clamping groups 41 is arranged in one-to-one correspondence with the inlet pipe 31 and is located on both sides of the heat preservation unit 21, while the other clamping group 41 is arranged in one-to-one correspondence with the outlet pipe 32 and is located on both sides of the heat preservation unit 21. Both the outlet pipe 32 and the inlet pipe 31 are bent, and one end of the outlet pipe 32 and the inlet pipe 31 on adjacent two heat preservation units 21 are arranged opposite to each other; the connecting pipe 42 is sleeved on the opposite ends of the outlet pipe 32 and the inlet pipe 31. Therefore, the opposite ends of the outlet pipe 32 and the inlet pipe 31 are inserted and installed on the connecting pipe 42 to communicate the heating cavities on the two heat preservation units 21.

[0052] Refer to Figure 2 and Figure 3, the clamping group 41 consists of two clamping blocks 411, and the two clamping blocks 411 are integrally arranged on the two heat preservation pipes 22 respectively. On the side walls of the opposite sides of the two clamping blocks 411, there are clamping surfaces 45 that fit the inlet pipe 31 or the outlet pipe 32. A clamping screw 44 is threadedly connected to the two clamping blocks 411. At the same time, clamping screws 44 are arranged at both ends of the heat preservation unit 21. The two clamping screws 44 are used to fixedly connect the two heat preservation pipes 22 together, and the inlet pipe 31 and the outlet pipe 32 are both closely attached to the two clamping surfaces 45, so that the inlet pipe 31 and the outlet pipe 32 are fixedly connected to the clamping blocks 411, thereby fixedly connecting the two heat preservation units 21 together.

[0053] Referring to Figure 1 and Figure 2 , the control component 33 is arranged on the machine body 1, and the control component 33 is communicated with the inlet pipe 31 and the outlet pipe 32 and is respectively used for inputting and recycling the heat preservation medium; the control component 33 includes a control box 34 and a control pump 35. The control box 34 is fixedly installed on the machine body 1, and the control box 34 is filled with the heat preservation medium. At the same time, a temperature detector for detecting temperature and a constant temperature pipe for heating are fixedly installed in the control box 34, so as to keep the temperature of the heat preservation medium within the required temperature range; the control pump 35 is fixedly installed on the machine body 1, and the control pump 35 is communicated with the inside of the control box 34; an adding pipe 36 communicated with the inlet pipe 31 is fixedly installed on the control pump 35, and at the same time, a return pipe 37 fixedly connected to the upper surface of the control box 34 is fixedly installed on the outlet pipe 32.

[0054] Referring to Figure 1 and Figure 2 , when the control pump 35 is started, the heat preservation medium enters the heating cavity through the adding pipe 36 and the inlet pipe 31, so as to heat and keep warm the sample in the conveying pipe 12. Then, the heat preservation medium is output through the outlet pipe 32 and enters the heating cavity in the next heat preservation unit 21 through the connecting pipe 42 and the inlet pipe 31, and circulates in this way, so as to realize heating and keeping warm the samples in multiple conveying pipes 12. Finally, the heat preservation medium flows back to the control box 34 through the return pipe 37, so as to realize heating and keeping warm the samples, reduce the probability of sample liquefaction or even solidification, and improve the detection efficiency and effect of the mass spectrometer.

[0055] Referring to Figure 1 and Figure 2, the sample heating mechanism includes a sample bottle 51 and a heating assembly 6. The sample bottle 51 is used to hold the sample and is detachably connected to the delivery pipe 12 through a fixing assembly 7. One ends of a plurality of delivery pipes 12 far from the mass spectrometer body 1 are connected together through a fixing pipe 13; the fixing assembly 7 includes a first screw pipe 71 and a second screw pipe 72. The first screw pipe 71 is fixedly installed on the lower surface of the fixing pipe 13 and is in a vertical state. The first screw pipe 71 communicates with the fixing pipe 13 and a plurality of delivery pipes 12; the second screw pipe 72 is integrally provided at the top end of the sample bottle 51, and the diameter of the first screw pipe 71 is smaller than the diameter of the sample bottle 51; a threaded section for threaded connection with the inner wall of the first screw pipe 71 is provided on the outer side wall of the second screw pipe 72. The second screw pipe 72 is threadedly connected to the inner wall of the first screw pipe 71 and abuts against the first screw pipe 71 for positioning.

[0056] Refer to Figure 1 and Figure 2 , the heating assembly 6 is arranged on the body 1 and is used to heat and vaporize the sample in the sample bottle 51. The heating assembly 6 includes a heat insulation cover 61 and a heating pipe 62. The heat insulation cover 61 is a shell structure with a sealed top end and an open bottom end, and the heat insulation cover 61 is used to achieve a heat insulation effect; the first screw pipe 71 vertically passes through the upper surface of the heat insulation cover 61 and extends into the heat insulation cover 61, so that the second screw pipe 72 and the sample bottle 51 are both located inside the heat insulation cover 61 to achieve a heat insulation effect; one end of the heating pipe 62 is fixedly installed on the control pump 35, and the heating pipe 62 passes through the side wall of the heat insulation cover 61 and extends into the heat insulation cover 61. At the same time, the heating pipe 62 is spirally wound around the periphery of the sample bottle 51, and the sample bottle 51 abuts against the heating pipe 62 to heat and vaporize the sample. At the same time, after passing through the heat insulation cover 61, the heating pipe 62 is fixedly connected to the upper surface of the control box 34.

[0057] Refer to Figure 1 and Figure 2 , when the control pump 35 is started, the heat preservation medium heats and vaporizes the sample in the sample bottle 51 through the heating pipe 62, and finally the heat preservation medium flows back into the control box 34 through the heating pipe 62 for recycling. A heat insulation block 52 is fixedly installed at the bottom of the sample bottle 51 and abuts against the bottom of the heat insulation cover 61. The heat insulation block 52 is used to block the bottom opening of the heat insulation cover 61 and facilitate leveraging when installing the sample bottle 51.

[0058] The working principle of the embodiment of the present application is as follows:

[0059] The control pump 35 is started, and the heat preservation medium heats and vaporizes the sample in the sample bottle 51 through the heating pipe 62. The vaporized sample is transported to the mass spectrometer main body 11 through multiple delivery pipes 12 for detection. At the same time, the heat preservation medium enters the heating chamber through the inlet pipe 31 to heat and keep warm the sample in the delivery pipe 12. Then, the heat preservation medium enters the next heating chamber through the delivery pipe 12 and the connecting pipe 42, so as to heat and keep warm the samples in multiple delivery pipes 12. Finally, the heat preservation medium flows back to the control box 34 through the output pipe 32 and the return pipe 37 for recycling, thereby reducing the probability of sample liquefaction or even solidification and improving the detection efficiency and effect of the mass spectrometer.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A mass spectrometer, comprising a body (1), a mass spectrometer main body (11) provided on the body (1), and a plurality of delivery pipes (12) provided on the mass spectrometer main body (11) and used for delivering gaseous samples, wherein: A heat preservation device (2) for heating and keeping warm the samples in a plurality of conveying pipes (12) is provided on the body (1). The heat preservation device (2) includes: A plurality of heat preservation units (21). A plurality of the heat preservation units (21) are respectively sleeved on a plurality of conveying pipes (12), and a heating cavity for heating is provided inside each of them. Adjacent two of the heat preservation units (21) are connected together by a connecting assembly (4); A heat preservation mechanism. The heat preservation mechanism is provided on the body (1) and is used for heating the heating cavity; The heat preservation mechanism includes: An inlet pipe (31) and an outlet pipe (32). The inlet pipe (31) and the outlet pipe (32) are respectively arranged at two ends of the heat preservation unit (21) and are used for inputting and outputting a heat preservation medium into and from the heating cavity. The flowing direction of the heat preservation medium in the heating cavity is opposite to the moving direction of the sample. The connecting assembly (4) connects the outlet pipe (32) and the inlet pipe (31) located on two adjacent heat preservation units (21) together; A control assembly (33). The control assembly (33) is provided on the body (1), communicates with the inlet pipe (31) and the outlet pipe (32), and is used for inputting and recycling the heat preservation medium.

2. A mass spectrometer according to claim 1, wherein: The control assembly (33): A control box (34). The control box (34) is provided on the body (1) and contains the heat preservation medium. The outlet pipe (32) communicates with the control box (34) for the heat preservation medium to flow back; A control pump (35). The control pump (35) is provided on the body (1) and communicates the control box (34) and the inlet pipe (31).

3. A mass spectrometer according to claim 1, characterized in that: The connecting assembly (4) includes: Two clamping groups (41). The two clamping groups (41) are arranged at two ends of the heat preservation unit (21) and are respectively used for clamping the inlet pipe (31) and the outlet pipe (32) located on two adjacent heat preservation units (21); A connecting pipe (42). The connecting pipe (42) is inserted and arranged on the inlet pipe (31) and the outlet pipe (32) of two adjacent heat preservation units (21).

4. A mass spectrometer according to claim 3, characterized in that: The heat preservation unit (21) is composed of two semi-circular heat preservation pipes (22). The two heat preservation pipes (22) cooperate to form the heating cavity. The clamping group (41) is composed of two clamping blocks (411) respectively arranged on the two heat preservation pipes (22). A clamping screw rod (44) for positioning is threadedly connected to the two clamping blocks (411).

5. A mass spectrometer according to claim 4, characterized in that: The inlet pipe (31) and the outlet pipe (32) are bent, and one ends of the inlet pipe (31) and the outlet pipe (32) located on two adjacent heat preservation units (21) are arranged oppositely. A clamping surface (45) fitting the inlet pipe (31) and the outlet pipe (32) is provided on the side walls of the two opposite clamping blocks (411).

6. The mass spectrometer according to claim 2, characterized in that: A sample heating mechanism is provided on the body (1). The sample heating mechanism includes: A sample bottle (51). The sample bottle (51) is used for containing a sample and is detachably connected to the conveying pipe (12) through a fixing component (7); A heating component (6). The heating component (6) is provided on the body (1) and is used for heating and vaporizing the sample in the sample bottle (51).

7. A mass spectrometer according to claim 6, characterized in that: The fixing component (7) includes: The first solenoid (71), the first solenoid (71) is arranged on the body (1) and connected to the delivery pipe (12); The second solenoid (72), the second solenoid (72) is arranged on the sample bottle (51) and threadedly connected to the first solenoid (71) for positioning.

8. A mass spectrometer according to claim 7, wherein: The heating assembly (6) includes: A heat shield (61), the heat shield (61) is arranged on the body (1) and used for heat insulation. The first solenoid (71) is arranged on the heat shield (61) and both ends are located inside and outside the heat shield (61). The sample bottle (51) is located inside the heat shield (61); A heating pipe (62), the heating pipe (62) is arranged on the control pump (35), passes through the heat shield (61) and extends into the heat shield (61) and communicates with the control box (34). The heating pipe (62) located inside the heat shield (61) is spirally wound around the circumference of the sample bottle (51).

9. A mass spectrometer according to claim 8, characterized in that: The sample bottle (51) is provided with a heat insulation block (52) for facilitating the exertion of force. The heat insulation block (52) presses against the outer side wall of the heat shield (61) for positioning.

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