Interface device and mass spectrometer

Abstract

The embodiment of the utility model relates to the field of substance analysis, in particular to an interface device which is applied to a mass spectrometer, and the mass spectrometer comprises a mass spectrum device and an ion source device. The interface device comprises a main body, a movable part and a locking part; one of the movable part and the main body is used for connecting a mass spectrum device, and the other is used for connecting an ion source device; the movable part is movably connected with the main body, so that the mass spectrum device and the ion source device can move relatively; the movable piece is provided with a locking matching part; the locking piece is arranged on the main body and used for being matched with the locking matching part to lock or unlock relative movement between the mass spectrum device and the ion source device. The utility model also relates to a mass spectrometer. According to the technical scheme provided by the invention, the connection sealing performance of the ion source device and the mass spectrum device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of material analysis, and in particular to an interface device and a mass spectrometer. Background Art

[0002] A mass spectrometer, also known as a mass spectrometer, is an instrument used to separate and detect different isotopes. It is a type of instrument that separates and detects the composition of substances according to the mass difference of atoms, molecules or molecular fragments of substances based on the principle that charged particles can be deflected in an electromagnetic field. Among them, the triple quadrupole mass spectrometer is one of the mass spectrometers that can perform MS analysis. The triple quadrupole mass spectrometer works by connecting three quadrupoles in series. The first quadrupole scans and selects the required ions according to the set mass-to-charge ratio range. The second quadrupole, also known as the collision cell, is used to aggregate and transmit ions. During the flight of the selected ions, collision gas is introduced. The third quadrupole is used to analyze the fragment ions generated in the collision cell. The triple quadrupole mass spectrometer is widely used as the most sensitive and quantitatively reproducible mass spectrometer. As a reliable quantitative tool, the triple quadrupole tandem mass spectrometer can be adapted to various application fields such as drug analysis, environmental testing, medical testing, food safety, pesticide residues, and nutritional testing. The triple quadrupole mass spectrometer is widely used due to its high sensitivity and good quantitative reproducibility.

[0003] The ion source device, one of the important core components of the triple quadrupole mass spectrometer, currently has poor connection stability after the ion source device and the mass spectrometer are closed, which leads to easy leakage and poor sealing at the connection between the two, affecting the use of the mass spectrometer. Utility Model Content

[0004] Based on this, an embodiment of the present application provides an interface device and a mass spectrometer.

[0005] In order to solve the above technical problems, the embodiment of the present application provides an interface device, which adopts the following technical solution:

[0006] The interface device is applied to a mass spectrometer, wherein the mass spectrometer comprises a mass spectrometer device and an ion source device; the interface device comprises a main body, a movable part and a locking part;

[0007] One of the movable part and the main body is used to connect the mass spectrometer device, and the other is used to connect the ion source device; and the movable part and the main body are movably connected to enable the mass spectrometer device and the ion source device to move relative to each other;

[0008] The movable part is provided with a locking fitting portion; the locking part is arranged on the main body and is used for cooperating with the locking fitting portion to lock or unlock the relative movement between the mass spectrometer device and the ion source device.

[0009] Furthermore, the main body is provided with a movable passage;

[0010] The movable member is movably installed in the movable channel so that the mass spectrometer device and the ion source device can move relative to each other.

[0011] Furthermore, the main body is also provided with a locking channel connected to the movable channel;

[0012] The locking member is arranged in the locking channel, and one end close to the movable channel can be matched with the locking matching portion.

[0013] Further, the locking member is a locking plunger, and the locking plunger comprises a plunger sleeve, a plunger body and a reset component; the plunger sleeve is arranged in the locking channel; the plunger body is slidably installed in the locking channel so that the end of the plunger body close to the movable channel can cooperate with the locking matching part; the reset component is arranged in the plunger sleeve, and is used to drive the plunger body to move along the locking channel in a direction close to the movable channel when the plunger body moves along the locking channel in a direction away from the movable channel;

[0014] Alternatively, the locking member is a locking screw, which is threadedly connected to the locking channel so that one end of the locking screw close to the movable channel can cooperate with the locking mating part to lock or unlock the relative movement between the mass spectrometer device and the ion source device.

[0015] Furthermore, the reset component is an elastic component; wherein:

[0016] The elastic component is sleeved on the plunger body, and one end of the elastic component close to the movable channel is connected and fixed to the plunger body, and one end of the elastic component away from the movable channel abuts against the inner wall of the locking channel away from the movable channel;

[0017] And / or, the plunger sleeve is provided with a notch, and the plunger body is provided with a locking portion matching the shape of the notch.

[0018] Furthermore, the movable channel includes a connected linear channel and a rotating channel;

[0019] The movable part can be slidably connected with the linear channel and the rotating channel; when the movable part slides on the linear channel, the mass spectrometer device and the ion source device move relatively linearly; when the movable part is located in the rotating channel, the mass spectrometer device and the ion source device can rotate relatively.

[0020] Furthermore, the main body and / or the movable part is provided with a mounting position, and the mounting position is used to connect the mass spectrometer device or the ion source device;

[0021] The interface device further comprises a limiter disposed at the installation position, wherein the limiter is used to limit the position of the installation position and the mass spectrometer device or the ion source device.

[0022] Further, the movable part is flat, and the shape of the linear channel corresponds to the shape of the movable part; and / or,

[0023] The diameter of the rotary channel is greater than the diameter of the linear channel.

[0024] Furthermore, one end of the movable part is provided with a fixing part, and the fixing part is used to be connected to the mass spectrometer device or the ion source device;

[0025] And / or, a positioning portion is provided at the other end of the movable member, and the positioning portion is used to limit the installation position of the movable member on the main body;

[0026] And / or, the locking fitting portion is a locking fitting hole provided in the movable part, and the locking part is detachably connected to the locking fitting hole for locking or unlocking the relative movement between the mass spectrometer device and the ion source device.

[0027] In order to solve the above technical problems, the present application also provides a mass spectrometer, which adopts the following technical solution:

[0028] A mass spectrometer, comprising a mass spectrometer device, an ion source device and an interface device as described above;

[0029] One of the mass spectrometer device and the ion source device is connected to the movable part, and the other is connected to the main body.

[0030] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects: in the present application, the cooperation between the locking member and the locking mating portion is used, on the one hand, to lock the relative movement of the mass spectrometer device and the ion source device when the mass spectrometer device and the ion source device are closed, so that the two are tightly fitted, thereby improving the connection stability and connection sealing between the mass spectrometer device and the ion source device, so as to avoid leakage at the connection between the mass spectrometer device and the ion source device when the interior of the ion source device is under positive pressure; on the other hand, it is used to unlock the locked state of the mass spectrometer device and the ion source device, so that the two can move relative to each other, thereby allowing the interior of the mass spectrometer device and the interior of the ion source device to be opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. 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.

[0032] Figure 1 is a schematic structural diagram of a mass spectrometer according to an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of the structure of an interface device according to an embodiment of the present application;

[0034] Figure 3 is a schematic diagram of the structure decomposition of an interface device according to an embodiment of the present application;

[0035] Figure 4 is a schematic cross-sectional structure diagram of an interface device according to an embodiment of the present application;

[0036] Figure 5 is a schematic structural diagram of a main body in an interface device according to an embodiment of the present application;

[0037] Figure 6 is a schematic structural diagram of an ion source device and a mass spectrometer device in a separated state according to an embodiment of the present application;

[0038] Figure 7 is a schematic structural diagram of an ion source device in an inner cavity open state according to an embodiment of the present application;

[0039] Figure 8 is a structural schematic diagram of an ion source device and a mass spectrometer device in a locked state according to an embodiment of the present application;

[0040] Reference numerals:

[0041] 100. Interface device; 110. Main body; 111. Movable channel; 1111. Linear channel; 1112. Rotary channel; 112. Locking channel; 113. Mounting position A; 120. Movable part; 121. Locking fitting part; 122. Mounting position B; 123. Fixing part; 124. Positioning part; 130. Locking part; 131. Plunger sleeve; 1311. Notch; 132. Plunger body; 1321. Locking part; 133. Reset part; 140. Limiting part; 200. Mass spectrometer; 300. Ion source device. DETAILED DESCRIPTION

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0043] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] See also Figure 1 The present application proposes an interface device 100, which is applied to a mass spectrometer, wherein the mass spectrometer includes a mass spectrometer 200 and an ion source device 300. The mass spectrometer 200 is responsible for separating and detecting ions according to their mass / charge ratio, so as to analyze the composition and structure of various compounds in the sample; the ion source device 300 is a component in the mass spectrometer for generating ions, and usually uses different methods to convert the sample to be analyzed into an ion state. Common ion sources include electrospray ionization source (ESI), chemical ionization source (CI) and protonated electron impact ionization source (EI). The function of these ion source devices 300 is to convert molecules in the sample into ions and provide an ion source for mass spectrometry analysis.

[0045] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0046] See also Figures 1 to 3An embodiment of the present application provides an interface device 100, including a main body 110, a movable part 120 and a locking part 130; one of the movable part 120 and the main body 110 is used to connect the mass spectrometer device 200, and the other is used to connect the ion source device 300; and the movable part 120 and the main body 110 are movably connected to enable relative movement between the mass spectrometer device 200 and the ion source device 300; the movable part 120 is provided with a locking fitting part 121; the locking part 130 is provided on the main body 110, and is used to cooperate with the locking fitting part 121 to lock or unlock the relative movement between the mass spectrometer device 200 and the ion source device 300.

[0047] Understandably, in some embodiments, the movable member 120 is used to connect with the mass spectrometer 200, and the main body 110 is connected with the ion source device 300; in other embodiments, the ion source device 300 is used to connect with the mass spectrometer 200, and the movable member 120 is connected with the ion source device 300. In addition, since the movable member 120 is movably connected with the main body 110, the mass spectrometer 200 and the ion source device 300 can move relative to each other, and can be used to open the inner cavity of the ion source device 300, so that the ion source device 300 and the mass spectrometer 200 can be opened in a state where the ion source device 300 and the mass spectrometer 200 are not completely separated, which is convenient for the repair and maintenance of the ion source device 300.

[0048] Secondly, the cooperation between the locking member 130 and the locking mating portion 121 is used, on the one hand, to lock the relative movement of the mass spectrometer device 200 and the ion source device 300 when they are closed, so that the two fit closely, thereby improving the connection stability and connection sealing between the mass spectrometer device 200 and the ion source device 300, so as to avoid leakage at the connection between the mass spectrometer device 200 and the ion source device 300 when the interior of the ion source device 300 is under positive pressure; on the other hand, it is used to unlock the locked state of the mass spectrometer device 200 and the ion source device 300, so that the two can move relative to each other, thereby allowing the interior of the mass spectrometer device 200 and the interior of the ion source device 300 to be opened.

[0049] In some embodiments, see Figures 1 to 3 The main body 110 is provided with an active channel 111; the movable member 120 is movably installed in the active channel 111, so that the mass spectrometer 200 and the ion source device 300 can move relative to each other. Such a configuration can, on the one hand, protect the movable connection structure between the movable member 120 and the active channel 111; on the other hand, the active channel 111 can limit the active position of the movable member 120, thereby ensuring the accuracy of the active position of the movable member 120, thereby improving the smoothness of the relative movement of the ion source device 300 and the mass spectrometer 200.

[0050] In some embodiments, the main body 110 is further provided with a locking channel 112 connected to the movable channel 111 ; the locking member 130 is disposed in the locking channel 112 , and one end close to the movable channel 111 can cooperate with the locking matching portion 121 .

[0051] It can be understood that the locking member 130 is inserted into the locking channel 112, and one end is used to cooperate with the locking mating part 121 to achieve locking or unlocking the relative movement between the mass spectrometer device 200 and the ion source device 300, and the other end is arranged on the side of the locking channel 112 away from the active channel 111, so as to allow the operator to control the cooperation between the locking member 130 and the locking mating part 121 to lock or unlock the relative movement between the mass spectrometer device 200 and the ion source device 300.

[0052] In order to enable persons skilled in the art to better understand the solution of the present application, the technical solution of the locking member 130 in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0053] ①Please refer to Figures 1 to 4 The locking member 130 is a locking plunger, and the locking plunger includes a plunger sleeve 131 and a plunger body 132; the plunger sleeve 131 is installed in the locking channel 112; the plunger body 132 is slidably installed in the locking channel 112, so that the end of the plunger body 132 close to the active channel 111 can cooperate with the locking matching portion 121; the locking plunger also includes a reset component 133; the reset component 133 is arranged in the plunger sleeve 131, and is used to drive the plunger body 132 to move along the locking channel 112 in a direction close to the active channel 111 when the plunger body 132 moves along the locking channel 112 in a direction away from the active channel 111.

[0054] It can be understood that, by manipulating the plunger body 132 to slide in the plunger sleeve 131, on the one hand, the end of the plunger body 132 close to the movable channel 111 can be moved in a direction close to the locking fitting portion 121 until the plunger body 132 and the locking fitting portion 121 are in contact, thereby locking the relative movement between the ion source device 300 and the mass spectrometer device 200; on the other hand, the end of the plunger body 132 close to the movable channel 111 can be moved in a direction away from the locking fitting portion 121, so that the plunger body 132 and the locking fitting portion 121 are separated, thereby unlocking the relative movement between the ion source device 300 and the mass spectrometer device 200;

[0055] Secondly, when the plunger body 132 moves along the locking channel 112 away from the active channel 111, the reset component 133 drives the plunger body 132 to move along the locking channel 112 towards the active channel 111 to achieve the reset of the plunger body 132; and, the reset component 133 is also used to provide a force for the plunger body 132, so that the plunger body 132 forms a stable contact with the locking fitting part 121, thereby enhancing the locking strength of the relative movement between the ion source device 300 and the mass spectrometer device 200.

[0056] Furthermore, the reset component 133 is an elastic component; wherein:

[0057] Continue reading Figures 1 to 4 The elastic component is sleeved on the outer circumference of the plunger body 132, and one end of the elastic component close to the active channel 111 is connected and fixed to the plunger body 132, and one end of the elastic component away from the active channel 111 abuts against the inner wall of the locking channel 112 away from the active channel 111.

[0058] It can be understood that when the plunger body 132 is driven to move in the plunger sleeve 131 along the locking channel 112 in the direction away from the active channel 111 by applying external force, the elastic component is squeezed to form energy storage; when the external force is no longer applied, the elastic energy storage of the elastic component is used to drive the plunger body 132 to move in the plunger sleeve 131 along the locking channel 112 in the direction close to the active channel 111 until the plunger body 132 and the locking fitting part 121 are in contact, and the elastic force of the elastic component enables the plunger body 132 and the locking fitting part 121 to form a stable contact.

[0059] Continue reading Figures 1 to 4 The plunger sleeve 131 is provided with a notch 1311 , and the plunger body 132 is provided with a locking portion 1321 matching the shape of the notch 1311 .

[0060] It can be understood that when the plunger body 132 cooperates with the locking matching portion 121 to lock the relative movement between the ion source device 300 and the mass spectrometer device 200, the locking portion 1321 is arranged in the notch 1311; when the plunger body 132 is driven to move in the plunger sleeve 131 along the locking channel 112 away from the active channel 111 by applying an external force, the locking portion 1321 moves with the plunger body 132 and separates from the notch 1311. After the locking portion 1321 is completely separated from the notch 1311, the operator The operator can rotate the plunger body 132 to adjust the relative position of the locking portion 1321 and the notch 1311 in a direction perpendicular to the axis of the plunger body 132, so as to fix the plunger body 132 and the locking fitting portion 121 to cooperate in unlocking the relative movement between the ion source device 300 and the mass spectrometer device 200, and avoid resetting the plunger body 132 due to the elastic force of the elastic component, thereby facilitating the operator to unlock the ion source device 300 and the mass spectrometer device 200, as well as subsequent repair and maintenance operations.

[0061] ② The locking member 130 is a locking screw, which is threadedly connected to the locking channel 112 so that the end of the locking screw close to the movable channel 111 can cooperate with the locking fitting part 121 to lock or unlock the relative movement between the mass spectrometer device 200 and the ion source device 300.

[0062] Understandably, an internal thread structure that cooperates with the locking screw is provided in the locking channel 112; in actual application, the operator can screw the locking screw to move it in the locking channel 112 in a direction close to the active channel 111 until the end of the locking screw close to the active channel 111 contacts the locking matching part 121, thereby locking the relative movement between the ion source device 300 and the mass spectrometer device 200, or move the locking screw in the locking channel 112 in a direction away from the active channel 111, so that the locking screw and the locking matching part 121 are separated, thereby unlocking the relative movement between the ion source device 300 and the mass spectrometer device 200. In this way, the relative movement between the mass spectrometer device 200 and the ion source device 300 is locked or unlocked, which is easy to operate, simple in structure, and highly reliable.

[0063] In some embodiments, see Figure 1 , Figure 3 ,and Figure 5The movable channel 111 includes a connected linear channel 1111 and a rotating channel 1112; the movable part 120 can be slidably connected with the linear channel 1111 and the rotating channel 1112; when the movable part 120 slides on the linear channel 1111, the mass spectrometer device 200 and the ion source device 300 move relatively in a straight line; when the movable part 120 is located in the rotating channel 1112, the mass spectrometer device 200 and the ion source device 300 can rotate relative to each other.

[0064] Understandably, see Figure 6 When the ion source device 300 and the mass spectrometer device 200 need to be separated and placed in a separated state, the operator first unlocks the relative movement between the mass spectrometer device 200 and the ion source device 300 by cooperating with the locking member 130 and the locking fitting portion 121, and then moves the ion source device 300 in a direction away from the mass spectrometer device 200 to make the ion source device 300 and the mass spectrometer device 200 move in a relatively straight line, and makes the movable member 120 slide in the linear channel 1111 in a direction close to the rotating channel 1112 until the movable member 120 completely enters the rotating channel 1112 from the linear channel 1111. At this time, the ion source device 300 and the mass spectrometer device 200 are separated from each other and placed in a separated state. Then, in conjunction with the reference numeral 120, Figure 7 The operator rotates the ion source device 300 to make the ion source device 300 and the mass spectrometer device 200 rotate relative to each other, so as to drive the movable part 120 to rotate in the rotating channel 1112, thereby realizing an opening angle between the ion source device 300 and the mass spectrometer device 200, exposing the docking side of the ion source device 300 and the mass spectrometer device 200, and opening the inner cavity of the ion source device 300, that is, the ion source device 300 is in an inner cavity opening state, so as to repair the ion source device 300. In this way, in the process of opening the inner cavity of the ion source device 300, it is ensured that there is no interference between the various components of the ion source device 300 and the mass spectrometer device 200, avoiding damage to the ion source device 300 during the disassembly process of the ion source device 300, and improving the safety of the ion source device 300 when opening.

[0065] In addition, see Figure 8When the ion source device 300 and the mass spectrometer device 200 need to be closed and the two are in a locked state, the operator rotates the ion source device 300 in the opposite direction, so that the ion source device 300 and the mass spectrometer device 200 move relative to each other, thereby driving the movable part 120 to rotate in the rotating channel 1112 until the ion source device 300 and the mass spectrometer device 200 are aligned; then, the operator moves the ion source device 300 toward the direction close to the mass spectrometer device 200, so that the ion source device 300 and the mass spectrometer device 200 move relative to each other in a straight line, and the movable part 120 slides from the rotating channel 1112 into the linear channel 1111 until the ion source device 300 and the mass spectrometer device 200 are docked; finally, the operator locks the relative movement between the mass spectrometer device 200 and the ion source device 300 by cooperating with the locking member 130 and the locking matching portion 121. Thus, in the process of closing the ion source device 300 and the mass spectrometer device 200, the steps of rotational movement and linear movement are required to be performed in sequence to avoid mutual interference between the structures of the ion source device 300 and the mass spectrometer device 200 during docking.

[0066] In some embodiments, see Figures 1 to 4 , the main body 110 and / or the movable part 120 are provided with a mounting position, and the mounting position is used to connect the mass spectrometer device 200 or the ion source device 300; the interface device 100 also includes a stopper 140 arranged at the mounting position. With such arrangement, on the one hand, the stopper 140 is used to reduce the wear of the mass spectrometer device 200 and / or the ion source device 300 during the relative movement between the mass spectrometer device 200 and the ion source device 300; on the other hand, the stopper 140 is used to limit the position of the mounting position at the mass spectrometer device 200 or the ion source device 300, so as to avoid the problem of shaking of the mass spectrometer device 200 and / or the ion source device 300, thereby improving the connection stability between the mass spectrometer device 200 / the ion source device 300 and the interface device 100.

[0067] It can be understood that the mounting position on the main body 110 is mounting position A113, and the mounting position on the movable part 120 is mounting position B122; preferably, mounting positions A113 are provided at both upper and lower ends of the main body 110, and mounting positions B122 are provided at both upper and lower ends of the movable part 120, and each mounting position is provided with a limiter 140; this arrangement is used to further reduce the wear on the mass spectrometer device 200 and the ion source device 300, and the mass spectrometer device 200 and the ion source device 300 can be limited in multiple directions to avoid the problem of up and down shaking of the mass spectrometer device 200 and the ion source device 300, further improve the connection stability of the mass spectrometer device 200, the ion source device 300 and the interface device 100 and the accuracy of the installation position, and avoid the problem of difficulty in matching the high-pressure connector and the gas path hole position of the interface when opening or closing the mass spectrometer device 200 and the ion source device 300.

[0068] Preferably, the stopper 140 is a PTFE bushing, which is arranged at the installation position and sleeved on the outer periphery of the locking member 130. The PTFE bushing is elastic, which can further avoid abrasion of the mass spectrometer 200, the ion source device 300 and the locking member 130, and has a long service life.

[0069] In some embodiments, see Figure 3 and Figure 4 The movable member 120 is flat, so that the structure of the movable member 120 is more compact.

[0070] In some embodiments, see Figure 3 and Figure 4 The shape of the linear channel 1111 corresponds to the shape of the movable member 120 , so that the accuracy of the movable position of the movable member 120 on the linear channel 1111 is ensured by utilizing the flat structure corresponding to the linear channel 1111 .

[0071] In some embodiments, the diameter of the rotating channel 1112 is greater than the diameter of the linear channel 1111. Such a configuration can not only reduce the structural volume of the main body 110 and achieve a compact structure of the main body 110, but also allow the rotating channel 1112 to reserve sufficient rotating space for the movable member 120, thereby ensuring the smoothness of the rotation of the movable member 120 in the rotating channel 1112.

[0072] In some embodiments, see Figure 1 , Figure 3 and Figure 4 One end of the movable part 120 is provided with a fixing part 123, and the fixing part 123 is used to connect with the mass spectrometer 200 or the ion source device 300. In this way, the fixing part 123 is used to ensure the stability of the connection between the movable part 120 and the mass spectrometer 200 or the ion source device 300.

[0073] Furthermore, the fixing portion 123 is a fixing hole, and the movable part 120 can be connected to the mass spectrometer 200 or the ion source by fixing means such as pins and screws.

[0074] In some embodiments, see Figure 3 and Figure 4 A positioning portion 124 is provided at the other end of the movable member 120 , and the positioning portion 124 is used to limit the installation position of the movable member 120 on the main body 110 to ensure the accuracy of the installation position of the movable member 120 .

[0075] Furthermore, the positioning portion 124 is a limiting cap, and a cross-sectional area of ​​the limiting cap is larger than a cross-sectional area of ​​the movable member 120 , thereby limiting the movable member 120 .

[0076] Preferably, a fixing portion 123 is provided at one end of the movable member 120, and a positioning portion 124 is provided at the other end. With such a configuration, when the movable member 120 is assembled, the movable member 120 is passed from the upper end to the lower end of the movable channel 111, and the fixing portion 123 is used to connect and fix the mass spectrometer 200 or the ion source to limit one end of the movable member 120, and the positioning portion 124 is used to limit the installation position of the movable member 120 in the movable channel 111 to limit the other end of the movable member 120, so as to ensure the accuracy of the installation position of the movable member 120 while achieving stable assembly of the movable member 120.

[0077] In some embodiments, see Figure 1 , Figure 3 and Figure 4 The locking fitting portion 121 is a locking fitting hole opened in the movable part 120, and the locking part 130 is detachably connected to the locking fitting hole, and is used to lock or unlock the relative movement between the mass spectrometer device 200 and the ion source device 300.

[0078] It can be understood that the end of the locking member 130 close to the active channel 111 can be inserted into the locking matching hole to lock the relative movement between the mass spectrometer device 200 and the ion source device 300; the end of the locking member 130 close to the active channel 111 can also be separated from the locking matching hole, and when the two are completely separated, the relative movement between the mass spectrometer device 200 and the ion source device 300 is unlocked. In this way, the locking member 130 cooperates with the locking matching hole, which not only ensures the stability of the connection between the two when the two are locked together, but also has a strong reliability of the connection structure between the two.

[0079] See also Figure 1The embodiment of the present application also provides a mass spectrometer, including a mass spectrometer device 200, an ion source device 300 and the interface device 100 as described above; one of the mass spectrometer device 200 and the ion source device 300 is connected to the movable part 120, and the other is connected to the main body 110.

[0080] Understandably, in some embodiments, the movable member 120 is used to connect with the mass spectrometer 200, and the main body 110 is connected with the ion source device 300; in other embodiments, the ion source device 300 is used to connect with the mass spectrometer 200, and the movable member 120 is connected with the ion source device 300. In addition, since the movable member 120 is movably connected with the main body 110, the mass spectrometer 200 and the ion source device 300 can move relative to each other, and can be used to open the inner cavity of the ion source device 300, so that the ion source device 300 and the mass spectrometer 200 can be opened in a state where the ion source device 300 and the mass spectrometer 200 are not completely separated, which is convenient for the repair and maintenance of the ion source device 300.

[0081] Secondly, the cooperation between the locking member 130 and the locking mating portion 121 is used, on the one hand, to lock the relative movement of the mass spectrometer device 200 and the ion source device 300 when they are closed, thereby improving the connection stability between the mass spectrometer device 200 and the ion source device 300 to avoid leakage at the connection between the mass spectrometer device 200 and the ion source device 300 when the interior of the ion source device 300 is under positive pressure; on the other hand, it is used to unlock the locked state of the mass spectrometer device 200 and the ion source device 300 so that the two can move relative to each other, thereby allowing the interior of the mass spectrometer device 200 and the interior of the ion source device 300 to be opened.

[0082] The embodiment of the present application also provides a mass spectrometer, including a mass spectrometer device 200, an ion source device 300 and the interface device 100 as described above; one of the mass spectrometer device 200 and the ion source device 300 is connected to the movable part 120, and the other is connected to the main body 110.

[0083] In the mass spectrometer of the present application, the mass spectrometer 200 and the ion source device 300 are connected by using the interface device 100, and under the cooperation of the locking piece 130 and the locking matching part 121 in the interface device 100, on the one hand, it is used to lock the relative movement of the mass spectrometer 200 and the ion source device 300 when the mass spectrometer 200 and the ion source device 300 are closed, so that the two are tightly fitted, thereby improving the connection stability and connection sealing between the mass spectrometer 200 and the ion source device 300, so as to avoid leakage at the connection between the mass spectrometer 200 and the ion source device 300 when the interior of the ion source device 300 is under positive pressure; on the other hand, it is used to unlock the locking state of the mass spectrometer 200 and the ion source device 300, so that the two can move relative to each other, thereby allowing the interior of the mass spectrometer 200 and the interior of the ion source device 300 to be opened.

[0084] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. An interface device, characterized in that: Applied to a mass spectrometer, the mass spectrometer comprises a mass spectrometer device and an ion source device; the interface device comprises a main body, a movable part and a locking part; One of the movable part and the main body is used to connect the mass spectrometer device, and the other is used to connect the ion source device; and the movable part and the main body are movably connected to enable the mass spectrometer device and the ion source device to move relative to each other; The movable part is provided with a locking fitting portion; the locking part is provided on the main body and is used for cooperating with the locking fitting portion to lock or unlock the relative movement between the mass spectrometer device and the ion source device.

2. The interface device according to claim 1, characterized in that: The main body is provided with a movable passage; The movable member is movably installed in the movable channel so that the mass spectrometer device and the ion source device can move relative to each other.

3. The interface device according to claim 2, characterized in that: The main body is also provided with a locking channel connected to the movable channel; The locking member is arranged in the locking channel, and one end close to the movable channel can be matched with the locking matching portion.

4. The interface device according to claim 3, characterized in that: The locking member is a locking plunger, and the locking plunger includes a plunger sleeve, a plunger body and a reset component; the plunger sleeve is arranged in the locking channel; the plunger body is slidably installed in the locking channel so that the end of the plunger body close to the movable channel can cooperate with the locking matching part; the reset component is arranged in the plunger sleeve, and is used to drive the plunger body to move along the locking channel in a direction close to the movable channel when the plunger body moves along the locking channel in a direction away from the movable channel; Alternatively, the locking member is a locking screw, which is threadedly connected to the locking channel so that one end of the locking screw close to the movable channel can cooperate with the locking mating part to lock or unlock the relative movement between the mass spectrometer device and the ion source device.

5. The interface device according to claim 4, characterized in that: The reset component is an elastic component; wherein: The elastic component is sleeved on the plunger body, and one end of the elastic component close to the movable channel is connected and fixed to the plunger body, and one end of the elastic component away from the movable channel abuts against the inner wall of the locking channel away from the movable channel; And / or, the plunger sleeve is provided with a notch, and the plunger body is provided with a locking portion matching the shape of the notch.

6. The interface device according to claim 2, characterized in that: The movable channel includes a connected linear channel and a rotating channel; The movable part can be slidably connected with the linear channel and the rotating channel; when the movable part slides on the linear channel, the mass spectrometer device and the ion source device move relatively linearly; when the movable part is located in the rotating channel, the mass spectrometer device and the ion source device can rotate relatively.

7. The interface device according to claim 6, characterized in that: The main body and / or the movable part is provided with a mounting position, and the mounting position is used to connect the mass spectrometer device or the ion source device; The interface device further comprises a limiter disposed at the installation position, wherein the limiter is used to limit the position of the installation position and the mass spectrometer device or the ion source device.

8. The interface device according to claim 6, characterized in that: The movable member is flat, and the shape of the linear channel corresponds to the shape of the movable member; and / or, The diameter of the rotary channel is greater than the diameter of the linear channel.

9. The interface device according to any one of claims 1 to 8, characterized in that: One end of the movable part is provided with a fixing part, and the fixing part is used to be connected to the mass spectrometer device or the ion source device; And / or, a positioning portion is provided at the other end of the movable member, and the positioning portion is used to limit the installation position of the movable member on the main body; And / or, the locking fitting portion is a locking fitting hole provided in the movable part, and the locking part is detachably connected to the locking fitting hole for locking or unlocking the relative movement between the mass spectrometer device and the ion source device.

10. A mass spectrometer, characterized in that comprising a mass spectrometer, an ion source device and an interface device as claimed in any one of claims 1 to 9; One of the mass spectrometer device and the ion source device is connected to the movable part, and the other is connected to the main body.

Images