Electrospray ion source mass spectrometer

Abstract

The utility model relates to the technical field of mass spectrometers, in particular to an electrospray ion source mass spectrometer which comprises a mass spectrometer body, a driving clamp is arranged on the front face of the mass spectrometer body, an atomizing chamber is arranged in the driving clamp, a limiting window is formed in the outer surface of the atomizing chamber, two supports are rotationally connected to the interior of the atomizing chamber, and the two supports are arranged on the front face of the mass spectrometer body. An arc-shaped baffle is arranged in the atomizing chamber, and the outer surface of the arc-shaped baffle fixedly communicates with a base. Through the arrangement of the atomizing chamber, the arc-shaped baffle and other components, the base can drive the spraying needle assembly to rotate in the atomizing chamber through the arc-shaped baffle by means of the mutual matching relation between the atomizing chamber, the arc-shaped baffle and other components; therefore, the effect that the tilting angle of the spray needle assembly is adjusted by arranging the atomizing chamber, the arc-shaped baffle and other components is achieved, and the defects that in the existing technical scheme, an adjusting mechanism is lacked, and the orientation of the spray needle is inconvenient to adjust are overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mass spectrometers, in particular to an electrospray ion source mass spectrometer. BACKGROUND

[0002] A mass spectrometer is an instrument for separating and detecting different isotopes. It is a kind of instrument for separating and detecting the composition of a substance according to the principle that charged particles can be deflected in an electromagnetic field according to the mass difference of atoms, molecules or molecular fragments of the substance. Mass spectrometers are classified into isotope mass spectrometers, inorganic mass spectrometers and organic mass spectrometers according to the application range. According to the resolution, they are classified into high-resolution, medium-resolution and low-resolution mass spectrometers; and according to the working principle, they are classified into static instruments and dynamic instruments.

[0003] The sample solution enters the electrospray chamber through a very fine sample inlet tube. Under the action of a strong electric field, the sample solution is broken into many small charged droplets at the outlet due to the separation of electric charges and electrostatic attraction. Volatile substances evaporate from the droplets under high temperature conditions, increasing the surface charge density of the droplets. When the Rayleigh limit is reached, the droplets undergo a Coulomb explosion, generating individual ions and achieving sample ionization. The ions enter the first vacuum area through a glass capillary, where collision-activated fragmentation can be performed to obtain sample molecular fragments and thus obtain molecular structure information. Finally, the sample molecular ions and fragment ions pass through a series of separators and electrostatic lenses to enter the mass analyzer for mass analysis.

[0004] Through retrieval, a CN217009119U patent discloses an electrospray ion source capable of automatically adjusting the spray position and a mass spectrometer, which comprises a shell and a spray needle. The shell is provided with a cavity, and the spray needle is installed on the shell and extends into the cavity. The electrospray ion source capable of automatically adjusting the spray position further comprises a first moving structure, a second moving structure and a lifting structure. The first moving structure is installed on the shell and provides the spray needle with movement in a first direction. The second moving structure is installed on the first moving structure and provides the spray needle with movement in a second direction perpendicular to the first direction. The lifting structure is installed on the second moving structure and provides the spray needle with movement in a third direction perpendicular to the first direction and the second direction. The spray needle is installed on the lifting structure, and the spray needle realizes automatic adjustment of the position through the first moving structure, the second moving structure and the lifting structure. The utility model also relates to a mass spectrometer comprising the above-mentioned electrospray ion source capable of automatically adjusting the spray position.

[0005] In current mass spectrometers, the spray needle inside the ion source is generally placed vertically or obliquely, which is suitable for different test objects and test environments.

[0006] In the related art, the inventor finds that the angle adjusting mechanism in the prior art causes inconvenience in adjusting the inclination angle of the spray needle and the orientation of the needle opening, and the present application solves the problem of lack of angle adjusting mechanism in the prior art by cooperation between the arc-shaped baffle and the bracket and other components, so that the arc-shaped baffle can drive the base and the spray needle and other components to rotate inside the atomization chamber, thereby changing the orientation of the spray needle. Utility model content

[0007] In order to facilitate adjustment of the inclination angle of the spray needle assembly, the present application provides an electrospray ion source mass spectrometer.

[0008] The present application provides an electrospray ion source mass spectrometer, which adopts the following technical scheme: an electrospray ion source mass spectrometer, comprising a mass spectrometer body, a driving clamp is arranged on the front surface of the mass spectrometer body, a atomization chamber is arranged in the inside of the driving clamp, a limiting window is arranged on the outer surface of the atomization chamber, two brackets are rotatably connected in the inside of the atomization chamber, an arc-shaped baffle is arranged in the inside of the atomization chamber, a base is fixedly connected to the outer surface of the arc-shaped baffle, a sleeve is arranged in the inside of the base, a sample inlet is mounted in the inside of the sleeve, and a spray needle assembly is arranged at the bottom end of the sample inlet.

[0009] Optionally, the outer surface of the base is fixedly connected with a pointer, and the outer surface of the atomization chamber is fixedly inlaid with a scale table.

[0010] Optionally, one side pipe is fixedly connected to each side of the atomization chamber, and a heating device is mounted in the inside of each side pipe.

[0011] Optionally, a through hole is arranged on the lower surface of the driving clamp, and a bottom pipe is arranged in the inside of the through hole.

[0012] Optionally, two limiting grooves are arranged on the outer surface of the arc-shaped baffle, and a limiting ring is fixedly connected to the inner wall of the atomization chamber.

[0013] Optionally, two sliding grooves are arranged on the outer surface of the sleeve, and a driving piece is fixedly connected to the outer surface of the sleeve.

[0014] Optionally, a positioning piece is fixedly connected to the outer surface of the base, and a driving rod is rotatably connected to the positioning piece.

[0015] In summary, the present application has the following beneficial technical effects:

[0016] 1. The utility model discloses a set up atomizing chamber and arc baffle etc. component, through the mutual cooperation between atomizing chamber and arc baffle etc. component, make base can drive the rotation of spray needle assembly in the inside of atomizing chamber through arc baffle, further reached the effect that the utility model discloses through setting up atomizing chamber and arc baffle etc. component to the adjustment of spray needle assembly's angle of inclination, solved the lack of adjusting mechanism of present technical scheme, the inconvenience of adjusting spray needle's direction.

[0017] 2. The utility model discloses a set up driving piece and driving rod etc. component, through the mutual cooperation between driving piece and driving rod, make driving rod can drive driving piece to go up and down through rotation, thereby make driving rod piece drive sleeve to slide up and down, further reached the effect that the utility model discloses through setting up driving piece and driving rod to the adjustment of spray needle assembly's height. DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram in the embodiment of the application;

[0019] Figure 2 It is the structure schematic diagram of driving clamp in the embodiment of the application;

[0020] Figure 3 It is Figure 2 The structure enlarged schematic diagram in A place of the application;

[0021] Figure 4 It is the structure schematic diagram of scale table in the embodiment of the application;

[0022] Figure 5 It is Figure 4 The structure enlarged schematic diagram in B place;

[0023] Figure 6 It is the structure schematic diagram of bottom pipe in the embodiment of the application

[0024] Figure 7 It is the inside structure schematic diagram of atomizing chamber in the embodiment of the application.

[0025] Fig. 1, mass spectrometer body;2, driving clamp;3, atomizing chamber;4, limit window;5, support;6, arc baffle;7, base;8, sleeve;9, sample inlet;10, spray needle assembly;11, pointer;12, scale table;13, side pipe;14, heating device;15, through -hole;16, bottom pipe;17, limit slot;18, limit ring;19, sliding slot;20, driving piece;21, positioning piece;22, driving rod. DETAILED DESCRIPTION

[0026] The application will be further described in detail below with the accompanying drawings. Figures 1-7

[0027] ​The embodiment of the application discloses an electrospray ion source mass spectrometer. Figure 1 、 2 , 3, 7, an electrospray ion source mass spectrometer, comprising a mass spectrometer body 1, a mass analyzer, a detector, a data processing system and a vacuum system and other devices are installed inside the mass spectrometer body 1, the front of the mass spectrometer body 1 is provided with a driving clamp 2, the inside of the driving clamp 2 is provided with an atomization chamber 3, the atomization chamber 3 is fixedly connected with a pipeline close to one side of the mass spectrometer body 1, so as to be connected with the ion input device inside the mass spectrometer body 1, a limiting window 4 is formed in the outer surface of the atomization chamber 3, two supports 5 are rotatably connected in the inside of the atomization chamber 3, an arc-shaped baffle 6 is arranged in the inside of the atomization chamber 3, the arc size of the arc-shaped baffle 6 is matched with the inner wall of the atomization chamber 3, the two ends of each support 5 are fixedly connected with the arc-shaped baffle 6, a base 7 is fixedly connected with the outer surface of the arc-shaped baffle 6, the base 7 is communicated with the inside of the atomization chamber 3 through the arc-shaped baffle 6, a sleeve 8 is arranged in the inside of the base 7, a scale is marked on the outer surface of the sleeve 8, the sleeve 8 is slidably connected with the inside of the base 7, the sleeve 8 is communicated with the inside of the base 7, a sample inlet 9 is arranged in the inside of the sleeve 8, the sample inlet 9 is used for injecting an experimental sample, the sample inlet 9 is threadedly connected with the inside of the sleeve 8, a spray needle assembly 10 is arranged at the bottom end of the sample inlet 9, the arc-shaped baffle 6 is driven to rotate in the inside of the atomization chamber 3 through the support 5, so that the arc-shaped baffle 6 drives the base 7, the sleeve 8 and the sample inlet 9 to rotate, and the tilt angle of the spray needle assembly 10 is changed.

[0028] Please refer to Figure 2 、 5 , the outer surface of the base 7 is fixedly connected with a pointer 11, the outer surface of the atomization chamber 3 is fixedly embedded with a scale table 12, the pointer 11 points to one side of the scale table 12, so that the rotation angle of the arc-shaped baffle 6 and other components is displayed.

[0029] Please refer to Figure 2 、 6 , 7, one side pipe 13 is fixedly communicated with the two sides of the atomization chamber 3, a heating device 14 is arranged in the inside of each side pipe 13, the other end of the heating device 14 enters the inside of the atomization chamber 3 through the side pipe 13, so that the heating device 14 can assist in heating the ions in the inside of the atomization chamber 3.

[0030] Please refer to Figure 6 、 7 , a through hole 15 is formed in the lower surface of the driving clamp 2, a bottom pipe 16 is arranged in the inside of the through hole 15, the bottom pipe 16 is fixedly communicated with the inside of the atomization chamber 3, the inside of the atomization chamber 3 can be exhausted through the opening of the bottom pipe 16.

[0031] Please refer to Figure 7The outer surface of the arc-shaped baffle 6 is provided with two limiting grooves 17, and the inner wall of the atomization chamber 3 is fixedly connected with a limiting ring 18, each limiting groove 17 corresponds to one limiting ring 18, and the limiting groove 17 and the limiting ring 18 assist in limiting the rotation of the arc-shaped baffle 6.

[0032] Please refer to Figure 7 The outer surface of the sleeve 8 is provided with two sliding grooves 19, the sliding grooves 19 limit the sliding of the sleeve 8, the outer surface of the sleeve 8 is fixedly connected with a driving piece 20, the driving piece 20 is used to drive the sleeve 8 to slide, so that the height of the spray needle assembly 10 is adjusted.

[0033] Please refer to Figure 2 、 3 The outer surface of the base 7 is fixedly connected with a positioning piece 21, the lower surface of the positioning piece 21 is rotatably connected with a rotating wheel, the positioning piece 21 is rotatably connected with a driving rod 22, the outer surface of the driving rod 22 is screw-connected with the inside of the driving piece 20, the rotating wheel is used to rotate the driving rod 22, so that the height of the driving piece 20 is adjusted.

[0034] The implementation principle of the embodiment of the application is as follows: the driving rod 22 is rotated, the driving rod 22 drives the driving piece 20 to move up and down, the driving piece 20 drives the sleeve 8 to move up and down, the sleeve 8 drives the sample inlet 9 and the spray needle assembly 10 to move up and down, so that the height adjustment of the spray needle is realized, the base 7 is used to rotate the arc-shaped baffle 6, the support 5 is rotated in the inside of the atomization chamber 3, the sleeve 8 and the sample inlet 9 and other components are rotated, so that the angle adjustment of the spray needle assembly 10 is realized, at the same time, the base 7 drives the pointer 11 to move on the upper surface of the scale table 12, and the scale is displayed.

[0035] The above are the preferred embodiments of the application, and do not limit the protection scope of the application, so: all equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. An electrospray ion source mass spectrometer comprising a mass spectrometer body (1) characterised in that: The front surface of the mass spectrometer body (1) is provided with a driving clamp (2), the inside of the driving clamp (2) is provided with an atomization chamber (3), the outer surface of the atomization chamber (3) is provided with a limiting window (4), the inside of the atomization chamber (3) is rotatably connected with two supports (5), the inside of the atomization chamber (3) is provided with an arc-shaped baffle (6), the outer surface of the arc-shaped baffle (6) is fixedly connected with a base (7), the inside of the base (7) is provided with a sleeve (8), the inside of the sleeve (8) is provided with a sample inlet (9), the bottom end of the sample inlet (9) is provided with a spray needle assembly (10).

2. The electrospray ion source mass spectrometer of claim 1, wherein: The outer surface of the base (7) is fixedly connected with a pointer (11), and the outer surface of the atomization chamber (3) is fixedly embedded with a scale table (12).

3. The electrospray ion source mass spectrometer of claim 1, wherein: The two sides of the atomization chamber (3) are fixedly connected with a side pipe (13), and the inside of each side pipe (13) is provided with a heating device (14).

4. The electrospray ion source mass spectrometer of claim 1, wherein: The lower surface of the driving clamp (2) is provided with a through hole (15), and the inside of the through hole (15) is provided with a bottom pipe (16).

5. The electrospray ion source mass spectrometer of claim 1, wherein: The outer surface of the arc-shaped baffle (6) is provided with two limiting grooves (17), and the inner wall of the atomization chamber (3) is fixedly connected with a limiting ring (18).

6. The electrospray ion source mass spectrometer of claim 1, wherein: The outer surface of the sleeve (8) is provided with two sliding grooves (19), and the outer surface of the sleeve (8) is fixedly connected with a driving piece (20).

7. The electrospray ion source mass spectrometer of claim 1, wherein: The outer surface of the base (7) is fixedly connected with a positioning piece (21), and the positioning piece (21) is rotatably connected with a driving rod (22).

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