Mass spectrum ion gate

Abstract

The utility model relates to a mass spectrum ion gate which comprises a supporting plate. The pole piece mounting mechanism comprises a pair of studs which are arranged at an interval, the two ends of each stud are flush, the two ends of each stud are detachably arranged on the upper surface of the supporting plate through insulating bases, and a plurality of insulating pads are arranged on the portions, between the two insulating bases, of the studs in a penetrating mode; the two faces, perpendicular to the axis of the stud, of the insulating pad are provided with a clamping part and a pad clamping groove respectively. The face, close to the insulating pad, of the insulating base is provided with a base clamping groove. The two ends, in the length direction, of the electrode plates abut against the two opposite faces of the two adjacent insulation pads on the two studs respectively, and clamping openings are formed in the electrode plates, and the clamping portions can penetrate through the clamping openings and are connected in a clamped mode through the clamping openings. According to the utility model, the electrode plates are assembled on the electrode plate mounting mechanism by sequentially and alternately clamping the insulating pads and the electrode plates on the insulating seat, and the assembly is convenient and simple.

Description

Technical Field

[0001] The utility model relates to the technical field of ion migration mass spectrometers, in particular to a mass spectrometer ion gate. Background Art

[0002] An ion gate is a device that can be used in analytical instruments such as ion mobility spectrometry, time-of-flight mass spectrometry, and electron microscopes to control the movement of ions. By applying a potential difference between two sets of alternately arranged parallel electrodes, a deflection electric field or a blocking electric field perpendicular to the original direction of ion movement is formed, which can deflect the trajectory of ion movement or block the movement of ions.

[0003] The existing ion gate usually includes two electrode meshes, which are usually made by integral molding or welding, making the manufacturing of the electrode meshes difficult.

[0004] Therefore, there is an urgent need to propose a mass spectrometer ion gate that is assembled from a single electrode sheet and is simple to assemble. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a mass spectrometer ion gate.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A mass spectrometer ion gate, comprising:

[0008] Support plate;

[0009] A pole piece mounting mechanism, the pole piece mounting mechanism comprising a pair of studs arranged at intervals and flush at both ends, the two ends of the studs being detachably arranged on the upper surface of the support plate through insulating seats, the axis of the stud being parallel to the support plate, a plurality of insulating pads being passed through the portion of the stud arranged between the two insulating seats, the two sides of the insulating pad being perpendicular to the axis of the studs being respectively provided with a clamping portion and a pad clamping groove, and a side of the insulating seat close to the insulating pad being provided with a seat clamping groove;

[0010] A plurality of electrode sheets, wherein the two ends of the electrode sheets along the length direction are respectively abutted by the two facing surfaces of two adjacent insulating pads on the two studs, and the electrode sheets are provided with a card interface for the card connection portion to pass through and be carded, the card connection portion passing through the card interface is carded in the pad card connection groove of the adjacent insulating pad, and the card connection portion that does not pass through the card interface and is close to the insulating seat is carded in the seat card connection groove of the adjacent insulating seat.

[0011] As a further improvement: the stud is slidably arranged on the insulating seat, and the two ends of the stud extending out of the insulating seat are respectively threadedly matched with nuts, and the two nuts respectively abut against the two insulating seats.

[0012] As a further improvement: two electrical connecting sheets are provided at either end of the electrode sheet along the length direction, and the two electrical connecting sheets extend in a direction perpendicular to the electrode sheet and away from each other, the electrical connecting sheets of two adjacent electrode sheets are arranged away from each other, and the two electrode sheets separated by one electrode sheet are abutted against each other through the electrical connecting sheets, and the abutting surfaces of the two abutting electrical connecting sheets are perpendicular to the axis of the stud.

[0013] As a further improvement: it also includes two electrode sub-sheets, the two ends of the two electrode sub-sheets along the length direction are respectively abutted through the two facing surfaces of two adjacent insulating pads on the two studs, the electrode sub-sheet is provided with a clamping sub-opening for the clamping part to pass through, the clamping part passing through the clamping sub-opening is clamped in the pad clamping groove of the adjacent insulating pad, the two electrode sub-sheets are respectively arranged close to any one side of the two groups of mutually abutting electrode sheets, and an electrical connection sub-sheet is provided at any end of the electrode sub-sheet along the length direction, the electrical connection sub-sheet extends in a direction perpendicular to the electrode sheet and close to the electrode sheet, the two groups of mutually abutting electrode sheets respectively abut the electrical connection sub-sheets of the two electrode sub-sheets through any one of the electrical connection sheets that are not abutted, and the abutting surfaces of the electrode sheets and the electrode sub-sheets abutting each other are perpendicular to the axis of the stud.

[0014] As a further improvement: the lower surface of the support plate is provided with two electrical connection ports.

[0015] As a further improvement: the edge of the clamping portion away from the pad clamping groove is chamfered.

[0016] As a further improvement: a first through hole for ions to pass through is provided on the support plate.

[0017] As a further improvement: a packaging cover is provided on the support plate, and a second through hole is provided on the packaging cover at a position corresponding to the first through hole.

[0018] The utility model has the following beneficial effects:

[0019] By arranging a clamping portion and a pad clamping groove on the insulating pad, arranging a seat clamping groove on the insulating seat, arranging a clamping interface on the electrode sheet and detachably arranging the insulating seat on the support plate, the insulating pad and the electrode sheet are alternately clamped on the insulating seat in turn to complete the assembly of the electrode sheet on the electrode sheet mounting mechanism, and the assembly is convenient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the installation structure of the electrode piece installation mechanism, the electrode piece and the electrode sub-piece of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the electrode sheet of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the electrode sub-sheet of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the insulation pad of the utility model;

[0026] Figure 6 Another structural schematic diagram of the insulating pad of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the insulating seat of the utility model.

[0028] Reference numerals:

[0029] 1-support plate; 2-electrode piece mounting mechanism; 3-electrode piece; 4-electrode secondary piece; 5-electrical connection port; 6-packaging cover;

[0030] 21-stud; 22-insulating seat; 23-insulating pad; 24-nut;

[0031] 221-seat card slot;

[0032] 231-clamping portion; 232-pad clamping groove;

[0033] 31-card interface; 32-electrical connection piece;

[0034] 41-card connection secondary port; 42-electrical connection secondary chip;

[0035] 61 - second through hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0037] In the description of the present invention, the terms "upper", "lower", "above", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0039] The following combination Figure 1-7 The utility model is described in further detail.

[0040] Example 1

[0041] Reference Figure 1-7 As shown, this embodiment provides a mass spectrometer ion gate, including:

[0042] Support plate 1;

[0043] The pole piece mounting mechanism 2 comprises a pair of studs 21 which are arranged at intervals and whose two ends are flush. The two ends of the studs 21 are detachably arranged on the upper surface of the support plate 1 through insulating seats 22. The axis of the studs 21 is parallel to the support plate 1. A plurality of insulating pads 23 are passed through the part of the studs 21 arranged between the two insulating seats 22. The insulating pads 23 are respectively provided with a clamping portion 231 and a pad clamping groove 232 on two sides perpendicular to the axis of the studs 21. A seat clamping groove 221 is provided on one side of the insulating seat 22 close to the insulating pad 23.

[0044] A plurality of electrode sheets 3 are provided, and the two ends of the electrode sheets 3 along the length direction are respectively abutted by the two facing surfaces of two adjacent insulating pads 23 on two studs 21. A card interface is provided on the electrode sheet 3 for the card portion 231 to pass through and be carded. The card portion 231 passing through the card interface is carded in the pad card groove 232 of the adjacent insulating pad 23, and the card portion 231 not passing through the card interface and close to the insulating seat 22 is carded in the seat card groove 221 of the adjacent insulating seat 22.

[0045] If all the insulating seats 22 are installed on the support plate 1 first, and then the insulating pads 23 and the electrode sheets 3 are clamped between the insulating seats 22, there will not be enough installation space for the insulating pads 23 installed last. Therefore, the insulating seats 22 are detachably arranged on the support plate 1, and half of the insulating seats 22 are installed first, and then all the insulating pads 23 and the electrode sheets 3 are installed, and finally the remaining insulating seats 22 are installed.

[0046] Specifically, the stud 21 is slidably disposed on the insulating seat 22 , and two ends of the stud 21 extending out of the insulating seat 22 are respectively threadedly matched with nuts 24 , and the two nuts 24 abut against the two insulating seats 22 .

[0047] The stud 21 is slidably arranged on the insulating seat 22 to facilitate installation and removal of the stud 21 , and nuts 24 are threadedly connected at both ends of the stud 21 extending out of the insulating seat 22 to ensure the connection stability of the stud 21 on the insulating seat 22 and thus ensure the connection stability between the electrode installation mechanism 2 and the electrode sheet 3 .

[0048] Two electrical connection ports 5 are provided on the lower surface of the support plate 1 .

[0049] The support plate 1 is provided with a first through hole for ions to pass through.

[0050] A packaging cover 6 is disposed on the support plate 1 , and a second through hole 61 is disposed on the packaging cover 6 at a position corresponding to the first through hole.

[0051] In order to facilitate the engagement of the engaging portion 231 in the pad engaging groove 232 and the seat engaging groove 221 , as a further improvement, a chamfer is provided on an edge of a side of the engaging portion 231 away from the pad engaging groove 232 .

[0052] The working principle of this embodiment is:

[0053] First, two insulating seats 22 are installed on the support plate 1 at both ends of the length direction of the electrode sheet 3 when it is installed. The two insulating seats 22 are provided with a seat clamping groove 221 on one side facing the installation position of the remaining two insulating seats 22. Then, an insulating pad 23 is clamped on each of the two insulating seats 22, and an electrode sheet 3 is clamped on the two insulating pads 23. After that, a new insulating pad 23 is clamped in the pad clamping groove 232 of the current insulating pad 23. The insulating pads 23 and the electrode sheet 3 are clamped alternately in turn until the latest clamped insulating pad 23 reaches the predetermined position abutting the remaining insulating seats 22. Then, the remaining two insulating seats 22 are installed on the support plate 1. At this time, the two installed insulating seats 22 abut against the side of the latest clamped insulating pad 23 provided with the pad clamping groove 232.

[0054] During the process of alternately installing the insulating pads 23 and the electrode sheets 3 , the studs 21 may be continuously advanced so that the newly clamped insulating pads 23 are flush with the end faces of the studs 21 to improve the connection stability between the insulating pads 23 and the electrode sheets 3 .

[0055] Example 2

[0056] Reference Figure 2-4 As shown, in order to facilitate the alternating connection between the electrode sheets 3 to form two electrode networks, this embodiment proposes an improvement on the basis of Embodiment 1, and two electrical connecting sheets 32 are provided at any end of the electrode sheet 3 along the length direction, and the two electrical connecting sheets 32 extend in a direction perpendicular to the electrode sheet 3 and away from each other, and the electrical connecting sheets 32 of two adjacent electrode sheets 3 are arranged away from each other, and the two electrode sheets 3 separated by one electrode sheet 3 are abutted against each other through the electrical connecting sheets 32, and the abutting surfaces of the two abutting electrical connecting sheets 32 are perpendicular to the axis of the stud 21.

[0057] The electrode sheets 3 abutting against each other with one electrode sheet 3 between them form an electrode network, and the electrode sheets 3 abutting against each other at the other ends form another electrode network, and the two electrode networks do not interfere with each other.

[0058] In one embodiment, the electrode sheet 3 may be made of elastic material to ensure that the electrode sheet 3 connected to the abutted electrical connecting sheet 32 ​​is slightly deformed, and the abutting stability of the electrical connecting sheet 32 ​​is ensured by the restoring force of the electrode sheet 3 after deformation.

[0059] As a further improvement, two electrode sub-sheets 4 are further included, and the two ends of the two electrode sub-sheets 4 along the length direction are respectively abutted by the two facing surfaces of two adjacent insulating pads 23 on the two studs 21. The electrode sub-sheet 4 is provided with a clamping sub-portion 41 for the clamping portion 231 to pass through, and the clamping portion 231 passing through the clamping sub-portion 41 is clamped in the pad clamping groove 232 of the adjacent insulating pad 23. The two electrode sub-sheets 4 are respectively arranged near any one side of the two groups of mutually abutting electrode sheets 3, and an electrical connection sub-sheet 42 is provided at any end of the electrode sub-sheet 4 along the length direction. The electrical connection sub-sheet 42 extends in a direction perpendicular to the electrode sheet 3 and close to the electrode sheet 3. The two groups of mutually abutting electrode sheets 3 respectively abut the electrical connection sub-sheets 42 of the two electrode sub-sheets 4 through any one of the unabutted electrical connection sheets 32, and the abutting surfaces of the electrode sheets 3 and the electrode sub-sheet 4 are perpendicular to the axis of the stud 21.

[0060] The material cost of the utility model is reduced by providing the electrode sub-sheet 4.

[0061] In one embodiment, the two electrical connection ports 5 can be respectively placed close to the two electrical connection pieces 32 that are not abutted, so as to facilitate the connection of the two electrical connection ports 5 with the two electrical connection pieces 32 .

[0062] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mass spectrometer ion gate, characterized in that: include: Support plate; A pole piece mounting mechanism, the pole piece mounting mechanism comprising a pair of studs arranged at intervals and flush at both ends, the two ends of the studs being detachably arranged on the upper surface of the support plate through insulating seats, the axis of the stud being parallel to the support plate, a plurality of insulating pads being passed through the portion of the stud arranged between the two insulating seats, the two sides of the insulating pad being perpendicular to the axis of the studs being respectively provided with a clamping portion and a pad clamping groove, and a side of the insulating seat close to the insulating pad being provided with a seat clamping groove; A plurality of electrode sheets, wherein the two ends of the electrode sheets along the length direction are respectively abutted by the two facing surfaces of two adjacent insulating pads on the two studs, and the electrode sheets are provided with a card interface for the card connection portion to pass through and be carded, the card connection portion passing through the card interface is carded in the pad card connection groove of the adjacent insulating pad, and the card connection portion that does not pass through the card interface and is close to the insulating seat is carded in the seat card connection groove of the adjacent insulating seat.

2. The mass spectrometer ion gate according to claim 1, characterized in that: The stud is slidably arranged on the insulating seat, and two ends of the stud extending out of the insulating seat are respectively threadedly matched with nuts, and the two nuts respectively abut against the two insulating seats.

3. The mass spectrometer ion gate according to claim 1, characterized in that: Two electrical connecting sheets are provided at either end of the electrode sheet along the length direction, and the two electrical connecting sheets extend in a direction perpendicular to the electrode sheet and away from each other, the electrical connecting sheets of two adjacent electrode sheets are arranged away from each other, and the two electrode sheets separated by one electrode sheet are abutted against each other through the electrical connecting sheets, and the abutting surfaces of the two abutting electrical connecting sheets are perpendicular to the axis of the stud.

4. The mass spectrometer ion gate according to claim 3, characterized in that: It also includes two electrode sub-sheets, the two ends of the two electrode sub-sheets along the length direction are respectively abutted through the two facing surfaces of two adjacent insulating pads on the two studs, the electrode sub-sheet is provided with a clamping sub-opening for the clamping portion to pass through, the clamping portion passing through the clamping sub-opening is clamped in the pad clamping groove of the adjacent insulating pad, the two electrode sub-sheets are respectively arranged close to any one side of the two groups of mutually abutting electrode sheets, and an electrical connection sub-sheet is arranged at any end of the electrode sub-sheet along the length direction, the electrical connection sub-sheet extends in a direction perpendicular to the electrode sheet and close to the electrode sheet, the two groups of mutually abutting electrode sheets respectively abut the electrical connection sub-sheets of the two electrode sub-sheets through any one of the electrical connection sheets that are not abutted, and the abutting surfaces of the electrode sheets and the electrode sub-sheets abutting each other are perpendicular to the axis of the stud.

5. The mass spectrometer ion gate according to claim 1, characterized in that: The lower surface of the support plate is provided with two electrical connection ports.

6. The mass spectrometer ion gate according to claim 1, characterized in that: The edge of the clamping portion away from the pad clamping groove is chamfered.

7. The mass spectrometer ion gate according to claim 1, characterized in that: The support plate is provided with a first through hole for ions to pass through.

8. The mass spectrometer ion gate according to claim 7, characterized in that: A packaging cover is provided on the support plate, and a second through hole is provided on the packaging cover at a position corresponding to the first through hole.

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