Mass spectrometer

Abstract

The utility model relates to the technical field of mass spectrometers, and provides a mass spectrometer which comprises a shell, an ion source and a driving device. The shell is provided with a cavity; the ion source comprises an electrospray needle, and one end of the electrospray needle extends into the cavity; the driving device is arranged on the shell, the electrospray needle is connected with the driving device, and the driving device comprises a first driving assembly and a second driving assembly; the first driving assembly comprises a first connecting piece, a second connecting piece and a first driving mechanism, the electrospray needle is connected to the first connecting piece, the first driving mechanism is connected to the second connecting piece, and the first driving mechanism is used for driving the first connecting piece so as to drive the electrospray needle to move in the first direction relative to the second connecting piece; the second driving assembly comprises a second driving mechanism, the second driving mechanism is connected with the shell and the first driving assembly, the second driving mechanism is used for driving the first driving assembly to move in the second direction, and the second direction is perpendicular to the first direction; the position of the electrospray needle is adjusted, and the working efficiency is improved.

Description

Technical Field

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

[0002] Mass spectrometry is an analytical detection technology. With the development of science and technology, mass spectrometry is widely used in technical fields such as energy, food safety, medicine and chemical industry. Mass spectrometry can be divided into gas chromatography-mass spectrometry, liquid chromatography-mass spectrometry and other types. Mass spectrometers are generally composed of sample introduction system, ion source, ion optical system, mass analyzer, detector, data acquisition and control system, vacuum system and other parts.

[0003] Among them, the ion source is a device that generates ions in a mass spectrometer. In order to improve the sensitivity of mass spectrometer analysis and detection, it is necessary to adjust the position of the electrospray needle in the ion source. In the prior art, the position of the electrospray needle is usually manually adjusted, resulting in low efficiency and high experience requirements for technicians. Utility Model Content

[0004] The main purpose of the present application is to provide a mass spectrometer, which can adjust the position of the electrospray needle through a driving device without manual adjustment, thereby improving the working efficiency of the mass spectrometer.

[0005] The present application provides a mass spectrometer, comprising a shell, an ion source and a driving device; the shell is provided with a cavity; the ion source comprises an electrospray needle, one end of which extends into the cavity; the driving device is arranged on the shell, the electrospray needle is connected to the driving device, and the driving device comprises a first driving component and a second driving component; the first driving component comprises a first connecting piece, a second connecting piece and a first driving mechanism, the electrospray needle is connected to the first connecting piece, the first driving mechanism is connected to the second connecting piece, the first driving mechanism is used to drive the first connecting piece to drive the electrospray needle to move in a first direction relative to the second connecting piece; the second driving component comprises a second driving mechanism, the second driving mechanism is connected to the shell and the first driving component, the second driving mechanism is used to drive the first driving component to move in a second direction, and the second direction is perpendicular to the first direction.

[0006] Optionally, the first driving mechanism includes a push rod motor and a third connecting member; the push rod motor includes a motor body and a push rod, and the motor body is connected to the second connecting member; one end of the third connecting member is connected to the first connecting member, and the other end of the third connecting member is connected to the push rod, and the motor body is used to drive the push rod to drive the first connecting member to move in the first direction.

[0007] Optionally, the second connecting member is coaxially arranged with the first connecting member, and the second connecting member is arranged outside the first connecting member, the side wall of the second connecting member is formed with a slide groove extending along the first direction, the third connecting member is passed through the slide groove, and the push rod drives the third connecting member to move in the slide groove.

[0008] Optionally, the second drive assembly also includes a fourth connecting member and a fifth connecting member; the fourth connecting member is arranged on the shell; the fifth connecting member can move along the second direction relative to the fourth connecting member, the fifth connecting member is connected to the second connecting member, and the second driving mechanism is used to drive the second connecting member to drive the first drive assembly to move in the second direction.

[0009] Optionally, the fourth connecting member is a fixed rail, the fifth connecting member is a sliding rail, and the direction in which the fixed rail and the sliding rail slide relative to each other is consistent with the driving direction of the second driving mechanism.

[0010] Optionally, the output end of the second driving mechanism is connected to the second connecting member.

[0011] Optionally, the output end of the second driving mechanism abuts against the second connecting member, and the second driving assembly further includes a first elastic member; one end of the first elastic member is connected to the second connecting member, and the other end of the first elastic member is connected to a side of the shell close to the second driving mechanism.

[0012] Optionally, the second drive assembly also includes a sixth connecting member and a seventh connecting member; the sixth connecting member is arranged on the shell, and the sixth connecting member and the fourth connecting member are respectively arranged on both sides of the second connecting member; the seventh connecting member can move along the second direction relative to the sixth connecting member, and the seventh connecting member is connected to the second connecting member.

[0013] Optionally, the first driving assembly further includes a second elastic member; two ends of the second elastic member are respectively connected to the first connecting member and the second connecting member in the first direction, and the first connecting member moves relative to the second connecting member in the first direction.

[0014] Optionally, a preset space is provided between the first connecting member and the second connecting member, and the first driving assembly further includes a third elastic member; two ends of the third elastic member are respectively connected to the first connecting member and the second connecting member in the second direction.

[0015] The present application provides a mass spectrometer, comprising a shell, an ion source and a driving device; the shell is provided with a cavity; the ion source comprises an electrospray needle, one end of which extends into the cavity; the driving device is arranged on the shell, the electrospray needle is connected to the driving device, and the driving device comprises a first driving component and a second driving component; the first driving component comprises a first connecting piece, a second connecting piece and a first driving mechanism, the electrospray needle is connected to the first connecting piece, the first driving mechanism is connected to the second connecting piece, the first driving mechanism is used to drive the first connecting piece to drive the electrospray needle to move in a first direction relative to the second connecting piece; the second driving component comprises a second driving mechanism, the second driving mechanism is connected to the shell and the first driving component, the second driving mechanism is used to drive the first driving component to move in a second direction, and the second direction is perpendicular to the first direction. In the present application, a first driving mechanism drives the first connecting member to move relative to the second connecting member to drive the electrospray needle to move in a first direction within the cavity, and a second driving assembly drives the first driving assembly to move in a second direction to drive the electrospray needle to move in the second direction within the cavity. The position of the electrospray needle can be adjusted by the driving device without manual adjustment, thereby improving the working efficiency of the mass spectrometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the structure of a mass spectrometer provided in an embodiment of the present application;

[0018] Figure 2 A structural schematic diagram of a first driving assembly provided in an embodiment of the present application;

[0019] Figure 3 Another structural schematic diagram of the first drive assembly provided in an embodiment of the present application;

[0020] Figure 4 A structural schematic diagram of a second drive assembly provided in an embodiment of the present application;

[0021] Figure 5 Another structural schematic diagram of the second drive assembly provided in an embodiment of the present application.

[0022] Reference numerals:

[0023] Shell 100, cavity 101, first fastener 102; electrospray needle 200; first drive assembly 300, first connecting member 301, limit member 3011, second connecting member 302, slide groove 3021, accommodating groove 3022, second fastener 3023, third fastener 3024, first drive mechanism 303, motor body 3031, push rod 30232, third connecting member 3033, second elastic member 304, third elastic member 305; second drive assembly 400, second drive mechanism 401, output end 4011, fourth connecting member 402, fifth connecting member 403, first elastic member 404, sixth connecting member 405, seventh connecting member 406; fixing frame 500. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The embodiment of the present application provides a mass spectrometer for solving the technical problem that the existing mass spectrometer needs to manually adjust the position of the electrospray needle, resulting in low efficiency.

[0026] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described below are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] See also Figures 1 to 5The embodiment of the present application provides a mass spectrometer, including a housing 100, an ion source and a driving device; the housing 100 is provided with a cavity 101; the ion source includes an electrospray needle 200, one end of the electrospray needle 200 extends into the cavity 101; the driving device is arranged on the housing 100, the electrospray needle 200 is connected to the driving device, the driving device includes a first driving component 300 and a second driving component 400; the first driving component 300 includes a first connecting member 301, a second connecting member 302 and a first driving mechanism 303, the electrospray needle 2 00 is connected to the first connecting member 301, the first driving mechanism 303 is connected to the second connecting member 302, the first driving mechanism 303 is used to drive the first connecting member 301 to drive the electrospray needle 200 to move in the first direction relative to the second connecting member 302; the second driving assembly 400 includes a second driving mechanism 401, the second driving mechanism 401 is connected to the shell 100 and the first driving assembly 300, the second driving mechanism 401 is used to drive the first driving assembly 300 to move in the second direction, and the second direction is perpendicular to the first direction.

[0028] like Figure 1 As shown, the mass spectrometer in the embodiment of the present application includes a housing 100, an ion source and a driving device, and the ion source includes an electrospray needle 200. It should be noted that the electrospray ion source is based on the ionization process of molecules in the solution, and uses a high voltage electric field to spray ions through the electrospray needle 200 for analysis. A cavity 101 is provided in the housing 100 in the embodiment of the present application, and the cavity 101 can be a hollow structure, and the electrospray needle 200 can extend into the cavity 101; the high voltage electric field generated by applying a high voltage to the electrospray needle 200 ionizes the molecules in the solution to obtain ions, so as to analyze the ions.

[0029] The first direction and the second direction of the embodiment of the present application are perpendicular to each other. For example, the first direction may be a vertical direction and the second direction may be a horizontal direction. Figure 1As shown, A is the first direction and B is the second direction. The electrospray needle 200 can move in the vertical direction in the cavity 101, and can also move in the horizontal direction in the cavity 101. Specifically, the driving device in the embodiment of the present application is arranged on the housing 100, and the driving device may include a first driving assembly 300 and a second driving assembly 400. The first driving assembly 300 may include a first connecting member 301, a second connecting member 302 and a first driving mechanism 303, the electrospray needle 200 is connected to the first connecting member 301, the first driving mechanism 303 is connected to the second connecting member 302, and the first driving mechanism 303 can drive the first connecting member 301 to move in the vertical direction relative to the second connecting member 302, so as to drive the electrospray needle 200 to move in the vertical direction in the cavity 101. The second driving assembly 400 may include a second driving mechanism 401, which connects the shell 100 and the first driving assembly 300. The second driving mechanism 401 can drive the first driving assembly 300 to move in the horizontal direction to drive the first connecting member 301 to move in the horizontal direction, thereby driving the electrospray needle 200 to move in the horizontal direction in the cavity 101.

[0030] like Figure 1 As shown, the mass spectrometer of the embodiment of the present application may further include a fixing frame 500 , which is disposed on the housing 100 and is used to fix the first driving mechanism 303 and the second driving mechanism 401 .

[0031] The embodiment of the present application provides a mass spectrometer, in which the first connecting member 301 is driven to move relative to the second connecting member 302 by the first driving mechanism 303, so as to drive the electrospray needle 200 to move in a first direction, i.e., a vertical direction, in the cavity 101, and the first driving assembly 300 is driven to move in a second direction, i.e., a horizontal direction, by the second driving assembly 400, so as to drive the electrospray needle 200 to move in a horizontal direction in the cavity 101, so that the position of the electrospray needle 200 can be automatically adjusted without manual adjustment, thereby improving the working efficiency of the mass spectrometer.

[0032] In one embodiment, the first driving mechanism 303 includes a push rod motor and a third connecting member 3033; the push rod motor includes a motor body 3031 and a push rod 3032, and the motor body 3031 is connected to the second connecting member 302; one end of the third connecting member 3033 is connected to the first connecting member 301, and the other end of the third connecting member 3033 is connected to the push rod 3032, and the motor body 3031 is used to drive the push rod 3032 to drive the third connecting member 3033 and the first connecting member 301 to move in the first direction.

[0033] like Figure 2As shown, the first driving mechanism 303 in the embodiment of the present application includes a push rod motor and a third connecting member 3033, and the push rod motor includes a motor body 3031 and a push rod 3032. For example, the motor body 3031 is connected to the second connecting member 302, one end of the third connecting member 3033 is connected to the first connecting member 301, and the other end of the third connecting member 3033 is connected to the push rod 3032, and the push rod 3032 moves in the vertical direction under the driving action of the motor body 3031, and the second connecting member 302 is fixed in the vertical direction. The first connecting member 301 can move in the vertical direction relative to the second connecting member 302 under the push and pull action of the push rod 3032, so that the electrospray needle 200 can move in the vertical direction in the cavity 101. The embodiment of the present application realizes automatic adjustment of the vertical position of the electrospray needle 200 in the cavity 101 through the push rod motor and the third connecting member 3033, and the position adjustment has a high accuracy.

[0034] In one embodiment, the second connecting member 302 is coaxially arranged with the first connecting member 301, and the second connecting member 302 is arranged outside the first connecting member 301, the side wall of the second connecting member 302 is formed with a slide groove 3021 extending along the first direction, the third connecting member 3033 is passed through the slide groove 3021, and the push rod 3032 drives the third connecting member 3033 to move in the slide groove 3021.

[0035] like Figure 3 As shown, the first connecting member 301 and the second connecting member 302 in the embodiment of the present application are coaxially arranged, and the second connecting member 302 is sleeved on the outside of the first connecting member 301, so that the first connecting member 301 can penetrate the second connecting member 302 and move in the first direction, i.e., the vertical direction, in the second connecting member 302. For example, the side wall of the second connecting member 302 in the embodiment of the present application is formed with a slide groove 3021 extending in the first direction, i.e., the vertical direction, and the third connecting member 3033 is connected to the first connecting member 301 after passing through the slide groove 3021. Based on this, the push rod 3032 can drive the third connecting member 3033 to move in the vertical direction in the slide groove 3021 under the driving action of the motor body 3031. In the embodiment of the present application, by providing the slide groove 3021 on the side wall of the second connecting member 302, the third connecting member 3033 can only move in the slide groove 3021 extending along the first direction, thereby limiting the range of movement of the third connecting member 3033 in the vertical direction.

[0036] In one embodiment, the embodiment of the present application can also set the size of the slide groove 3021 extending in the first direction to match the movement range of the electrospray needle 200 in the vertical space within the cavity 101, so that the movement range of the third connecting member 3033 in the slide groove 3021 is consistent with the vertical movement range of the electrospray needle 200 in the cavity 101, thereby fully adjusting the position of the electrospray needle 200.

[0037] In one embodiment, the second drive component 400 also includes a fourth connecting member 402 and a fifth connecting member 403; the fourth connecting member 402 is arranged on the shell 100; the fifth connecting member 403 can move along the second direction relative to the fourth connecting member 402, the fifth connecting member 403 is connected to the second connecting member 302, and the second drive mechanism 401 is used to drive the second connecting member 302 to drive the first drive component 300 to move in the second direction.

[0038] like Figure 4 As shown, the second drive assembly 400 in the embodiment of the present application further includes a fourth connection member 402 and a fifth connection member 403, the fourth connection member 402 is arranged on the housing 100, the fifth connection member 403 can move relative to the fourth connection member 402 in the second direction, i.e., the horizontal direction, and the fifth connection member 403 can be connected to the second connection member 302 by a screw, so that when the second drive mechanism 401 drives the second connection member 302, the fifth connection member 403 is driven to move relative to the fourth connection member 402 in the second direction, i.e., the horizontal direction, thereby driving the first drive assembly 300 to move in the horizontal direction. In the embodiment of the present application, the fourth connection member 402 and the fifth connection member 403 are arranged, and since the fourth connection member 402 is arranged on the housing 100, the fifth connection member 403 and the fourth connection member 402 move relative to each other, therefore, the direction of movement of the first drive assembly 300 can be limited by the relative movement relationship between the fifth connection member 403 and the fourth connection member 402, and the connection relationship between the fifth connection member 403 and the second connection member 302, so as to avoid misalignment and improve the accuracy of position adjustment.

[0039] In another embodiment, the second drive assembly 400 also includes a sixth connecting member 405 and a seventh connecting member 406; the sixth connecting member 405 is arranged on the shell 100, and the sixth connecting member 405 and the fourth connecting member 402 are respectively arranged on both sides of the second connecting member 302; the seventh connecting member 406 can move along the second direction relative to the sixth connecting member 405, and the seventh connecting member 406 is connected to the second connecting member 302.

[0040] like Figure 4As shown, the second drive component 400 of the embodiment of the present application may also include a sixth connection member 405 and a seventh connection member 406. The sixth connection member 405 can be arranged on the shell 100, and the sixth connection member 405 and the fourth connection member 402 are respectively arranged on both sides of the second connection member 302. Similarly, the seventh connection member 406 can move along the second direction relative to the sixth connection member 405. The seventh connection member 406 is also connected to the second connection member 302, and the position where the seventh connection member 406 is connected to the second connection member 302 corresponds to the position where the fifth connection member 403 is connected to the fourth connection member 402, thereby ensuring the stability of the second drive mechanism 401 driving the second connection member 302 to drive the first drive component 300 to move in the second direction.

[0041] In one embodiment, the fourth connecting member 402 is a fixed rail, the fifth connecting member 403 is a sliding rail, and the direction in which the fixed rail and the sliding rail slide relative to each other is consistent with the driving direction of the second driving mechanism 401 .

[0042] For example, the fourth connecting member 402 in the embodiment of the present application may be a fixed rail, the fifth connecting member 403 may be a sliding rail, and the direction in which the fixed rail and the sliding rail slide relative to each other may be consistent with the driving direction of the second driving mechanism 401. Specifically, the axial direction of the fixed rail and the sliding rail is consistent with the driving direction of the second driving mechanism 401. Similarly, the sixth connecting member 405 may also be a fixed rail, the seventh connecting member 406 may also be a sliding rail, and the axial direction of the sixth connecting member 405 and the seventh connecting member 406 is also consistent with the driving direction of the second driving mechanism 401. There is no need to add other driving components that limit the direction, which simplifies the overall design and reduces the production cost of the product.

[0043] In one embodiment, the output end 4011 of the second driving mechanism 401 is connected to the second connecting member 302 .

[0044] like Figure 3As shown, the second driving mechanism 401 in the embodiment of the present application is provided with an output end 4011 along the second direction, i.e., the horizontal direction, and the output end 4011 of the second driving mechanism 401 can be connected to the second connecting member 302. For example, the output end 4011 of the second driving mechanism 401 can be fixedly connected to the second connecting member 302, for example, by a threaded connection. Specifically, after the second driving mechanism 401 is turned on, when the output end 4011 rotates forward, since the output end 4011 is fixedly connected to the second connecting member 302, the second connecting member 302 can be driven to move in the second direction and away from the second driving mechanism 401. When the output end 4011 rotates in the reverse direction, the second connecting member 302 can also be driven to move in the second direction and close to the second driving mechanism 401, thereby driving the electrospray needle 200 to move in the second direction. The embodiment of the present application can drive the second connecting member 302 through the fixed connection relationship between the second driving mechanism 401 and the second connecting member 302, thereby driving the first driving assembly 300 to move in the second direction, which can not only automatically adjust the position of the spray needle, but also facilitate operation.

[0045] In one embodiment, the output end 4011 of the second driving mechanism 401 abuts against the second connecting member 302, and the second driving assembly 400 also includes a first elastic member 404; one end of the first elastic member 404 is connected to the second connecting member 302, and the other end of the first elastic member 404 is connected to a side of the shell 100 close to the second driving mechanism 401.

[0046] like Figure 3 , Figure 4 and Figure 5As shown, the output end 4011 of the second driving mechanism 401 in the embodiment of the present application can be in contact with the second connecting member 302. Specifically, after the second driving mechanism 401 is turned on, the output end 4011 extends along the second direction and gradually approaches until it abuts against the second connecting member 302, so that the second connecting member 302 can be pushed to drive the first driving assembly 300 to move in the second direction away from the second driving mechanism 401. The first driving assembly 300 in the embodiment of the present application can move in the direction close to the second driving mechanism 401 under the action of inertial tension. Specifically, the second driving assembly 400 in the embodiment of the present application can also include a first elastic member 404, a first fastener 102 is provided on one side of the housing 100 close to the second driving mechanism 401, and the second connecting member 302 is provided with a receiving groove 3022 and a second fastener 3023; the first elastic member 404 is installed in the receiving groove 3022, and one end of the first elastic member 404 is connected to the second fastener 3023, and the other end of the first elastic member 404 is connected to the first fastener 102. During the process in which the second connecting member 302 is pushed by the output end 4011 of the second driving mechanism 401, the first elastic member 404 is connected to the first fastener 102, so the first elastic member 404 is gradually stretched; when the output end 4011 of the second driving mechanism 401 retracts and does not abut against the second connecting member 302, the second connecting member 302 will move toward the direction of the second driving mechanism 401 under the inertia of the contraction of the first elastic member 404 during the process in which the first elastic member 404 returns to its initial state, thereby driving the first driving assembly 300 to move toward the second direction close to the second driving mechanism 401. The embodiment of the present application adjusts the movement of the first driving assembly 300 in the second direction through the elastic action of the output end 4011 of the second driving mechanism 401 and the first elastic member 404, reduces the connection structure such as threads, and avoids the long-term wear caused by the threaded connection between the output end 4011 of the second driving mechanism 401 and the second connecting member 302.

[0047] In one embodiment, the first driving assembly 300 further includes a second elastic member 304; two ends of the second elastic member 304 are respectively connected to the first connecting member 301 and the second connecting member 302 in the first direction, and the first connecting member 301 moves relative to the second connecting member 302 in the first direction.

[0048] like Figure 4As shown, the embodiment of the present application may further include a second elastic member 304, the second connecting member 302 is provided with a third fastener 3024, and the two ends of the second elastic member 304 are respectively connected to the first connecting member 301 and the third fastener 3024 in a first direction, i.e., a vertical direction. When the first connecting member 301 moves relative to the second connecting member 302 in the first direction, due to the elastic action of the second elastic member 304, the relative movement force between the first connecting member 301 and the second connecting member 302 can be reduced, thereby reducing the wear on the third fastener 3024.

[0049] In one embodiment, a preset space is provided between the first connecting member 301 and the second connecting member 302 , and the first driving assembly 300 further includes a third elastic member 305 ; two ends of the third elastic member 305 are respectively connected to the first connecting member 301 and the second connecting member 302 in the second direction.

[0050] like Figure 4 As shown, a preset space is provided between the first connecting member 301 and the second connecting member 302 in the embodiment of the present application, and the first driving assembly 300 also includes a third elastic member 305. The first connecting member 301 is provided with a limiting member 3011, and both ends of the third elastic member 305 respectively abut against the second connecting member 302 and are clamped in the limiting member 3011 in the second direction, so as to play a limiting role in the process of the first connecting member 301 moving relative to the second connecting member 302 in the first direction, i.e., the vertical direction, to avoid misalignment between the first connecting member 301 and the second connecting member 302.

[0051] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0052] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0053] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A mass spectrometer, characterized in that include: A housing is provided with a cavity; An ion source, the ion source comprising an electrospray needle, one end of the electrospray needle extending into the cavity; A driving device, arranged on the housing, the electrospray needle is connected to the driving device, and the driving device comprises a first driving assembly and a second driving assembly; The first driving assembly includes a first connecting member, a second connecting member and a first driving mechanism, the electrospray needle is connected to the first connecting member, the first driving mechanism is connected to the second connecting member, and the first driving mechanism is used to drive the first connecting member to drive the electrospray needle to move in a first direction relative to the second connecting member; The second driving assembly includes a second driving mechanism, the second driving mechanism connects the housing and the first driving assembly, and the second driving mechanism is used to drive the first driving assembly to move in a second direction, and the second direction is perpendicular to the first direction.

2. The mass spectrometer according to claim 1, characterized in that The first driving mechanism comprises: A push rod motor, the push rod motor comprises a motor body and a push rod, and the motor body is connected to the second connecting member; A third connecting member, one end of which is connected to the first connecting member, and the other end of which is connected to the push rod, and the motor body is used to drive the push rod to drive the first connecting member to move in the first direction.

3. The mass spectrometer according to claim 2, characterized in that The second connecting member is coaxially arranged with the first connecting member, and the second connecting member is arranged outside the first connecting member, the side wall of the second connecting member is formed with a slide groove extending along the first direction, the third connecting member is passed through the slide groove, and the push rod drives the third connecting member to move in the slide groove.

4. The mass spectrometer according to claim 1, characterized in that The second drive assembly further comprises: a fourth connecting member, disposed on the housing; The fifth connecting member is capable of moving along the second direction relative to the fourth connecting member, the fifth connecting member is connected to the second connecting member, and the second driving mechanism is used to drive the second connecting member to drive the first driving assembly to move in the second direction.

5. The mass spectrometer according to claim 4, characterized in that The fourth connecting member is a fixed rail, the fifth connecting member is a sliding rail, and the direction in which the fixed rail and the sliding rail slide relative to each other is consistent with the driving direction of the second driving mechanism.

6. The mass spectrometer according to claim 5, characterized in that The output end of the second driving mechanism is connected to the second connecting member.

7. The mass spectrometer according to claim 6, characterized in that The output end of the second driving mechanism is in contact with the second connecting member, and the second driving assembly further includes: A first elastic member, one end of the first elastic member is connected to the second connecting member, and the other end of the first elastic member is connected to a side of the shell close to the second driving mechanism.

8. The mass spectrometer according to claim 4, characterized in that The second drive assembly further comprises: a sixth connecting member, disposed on the housing, and the sixth connecting member and the fourth connecting member are respectively disposed on two sides of the second connecting member; The seventh connecting member is capable of moving along the second direction relative to the sixth connecting member, and the seventh connecting member is connected to the second connecting member.

9. The mass spectrometer according to any one of claims 1 to 8, characterized in that: The first drive assembly also includes: A second elastic member, two ends of which are respectively connected to the first connecting member and the second connecting member in the first direction, and the first connecting member moves relative to the second connecting member in the first direction.

10. The mass spectrometer according to any one of claims 1 to 8, characterized in that: A preset space is provided between the first connecting member and the second connecting member, and the first driving assembly further comprises: A third elastic member, two ends of which are respectively connected to the first connecting member and the second connecting member in the second direction.

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