CN219350146U - Electrode of ion transmission funnel and ion transmission funnel device - Google Patents

Abstract

The utility model relates to the field of mass spectrometry, in particular to an electrode of an ion transmission funnel and an ion transmission funnel device. The electrode includes: trompil, mounting hole, basement and mounting, the mounting is in the outside of mounting hole, the mounting with the frame of electrode sets up perpendicularly for insert the electrode plate and fix, this application has solved whole ion funnel assembly complicacy, occupation space is big, and the chaotic problem of circuit connection, has important meaning to the development and the application of ion transmission funnel through the ingenious design of electrode slice.

Description

Electrode of ion transmission funnel and ion transmission funnel device

Technical Field

The utility model relates to the field of mass spectrometry, in particular to an electrode of an ion transmission funnel and an ion transmission funnel device.

Background

Mass spectrometers are used in a large number of fields such as drug analysis, clinical testing, environmental monitoring and biotechnology as a highly sensitive, highly specific analytical method. Atmospheric pressure ion sources such as electrospray ionization (ESI) have evolved very rapidly in recent decades as they ionize samples at atmospheric pressure, becoming a leading-edge technique in the mass spectrometry field.

The sample is ionized under the atmospheric pressure and then is transmitted to a low vacuum area (1-10 Torr) through an atmospheric pressure interface, because of the great difference between the front vacuum area and the rear vacuum area of the atmospheric pressure interface, jet expansion can be generated when the air flow enters the low vacuum area, and only a very small part of the expanded air flow can continuously enter the next vacuum, so that the sensitivity of the instrument cannot be ensured.

In order to address the effects of gas flow expansion, ion transport techniques are used. The ion funnel technology is an ion transmission device which is rapidly developed in recent years, and can realize efficient transmission and focusing of ions under the vacuum condition of 1-10 Torr. However, the ion funnel device has a complex structure, and a huge load capacitance leads to high driving power requirements.

The most core structure in the whole ion funnel device is the integral assembly of the electrode plate, the existing electrode plate is simple in structure, the structure of the whole ion funnel device is very complicated, occupied space cannot be realized, simple assembly and fixation cannot be realized, meanwhile, the electrode also has to be connected with a power supply and voltage, so that the transmission of ions is realized, and if the design is unreasonable, the disorder of wiring is easily caused, so that the transmission effect is influenced.

Disclosure of Invention

In order to solve the technical problem, this application has solved whole ion funnel assembly complicacy through ingenious design, and occupation space is big, and the chaotic problem of circuit connection, this application proposes: an electrode for an ion transport funnel, the electrode comprising: openings, mounting holes, and a substrate.

Further, the thickness of the electrode is 0.1 mm-5 mm.

The electrode is sheet-shaped.

Further, the number of the mounting holes is 1 or more.

Further, the shape of the opening is round, and the aperture of the opening is 0.1 mm-10 mm.

Further, the electrode is a sheet electrode, and the shape of the electrode comprises triangle, circle, rectangle, polygon and other irregular patterns.

Further, the mounting hole is outside the opening and is not communicated with the opening.

Further, the mounting holes include a first mounting hole, a second mounting hole, and a third mounting hole disposed at 120 ° intervals along the circumference of the opening.

The shape of the mounting hole is not limited, mainly for the purpose of positioning and mounting, so the shape of the mounting hole depends on the mounting mode and the shape of the mounting piece matched with the mounting hole, and for the convenience of design, the mounting hole is preferably circular or elliptical.

Further, the electrode further has a fixing member outside the mounting hole.

Further, the aperture and the mounting hole share a portion of the substrate.

Further, the number of fixing members on each electrode is 1.

Further, in order to facilitate the electrode to be inserted into the fixing position of the circuit board by using the fixing piece, thereby being welded and fixed, the fixing piece is arranged in parallel with the first mounting hole and the connecting line of the circle center of the opening.

Still further, the fixing member has a fixing hole. The fixing holes can facilitate the electrode welding to be specified on the circuit board, and facilitate the connection of the power supply and the electrode.

Further, the electrodes are made of metal conductive materials, including stainless steel, brass, copper, and the like.

In another aspect, the utility model discloses an ion transport device comprising the electrode described above.

The beneficial effects are that:

the electrode is provided with the mounting holes, so that stable mounting of the electrode plate is ensured;

the mounting holes and the open holes share part of the matrix, so that the material cost of the electrode can be saved, and the whole device is more compact and saves space;

the fixing piece is arranged on the electrode, the fixing piece is provided with the opening, so that the electrode can be better welded and fixed on the circuit board, and the connection of a circuit is facilitated while the structure of the ion funnel is stabilized. The circuit structure inside the instrument is clear and simple.

Description of the drawings:

FIG. 1A is a schematic view of an electrode in which all of the substrates are shared by the openings and the mounting holes, and FIG. 1B is a schematic view of an electrode in which part of the substrates are shared by the openings and the mounting holes;

FIG. 2A is a schematic view of a square electrode with a fixture, and FIG. 2B is a schematic view of an amorphous electrode with a fixture;

fig. 3 is a schematic diagram of an ion funnel.

Detailed Description

The technical scheme of the utility model will be further explained and illustrated in the section with reference to the accompanying drawings. It should be noted that the specific embodiments shown in this section do not limit the technical solution of the present utility model, and all insubstantial changes made on the basis of the technical solution of the present utility model are within the scope of the limitation of the present utility model.

An electrode for an ion transport funnel, the electrode 1 comprising: an aperture 11, a mounting hole 12 and a base 13.

The thickness of the electrode is 0.1 mm-5 mm.

As shown in fig. 1 a, the electrode of the present embodiment is circular, having an opening 11, a mounting hole 12 and a base 13, the opening 11 and the mounting hole 12 sharing the base 13 in its entirety, and having a first mounting hole 121, a second mounting hole 122 and a third mounting hole 123 disposed at 120 ° intervals along the circumferential direction of the opening.

The opening 11 and the mounting hole 12 are both circular in this embodiment.

In practice, the shape of the opening and the mounting hole is not limited, the opening is mainly used for facilitating the passage of ions, and the mounting hole is mainly used for positioning and mounting, so that the shape of the mounting hole depends on the mounting mode and the shape of the mounting piece matched with the mounting hole.

In further embodiments, the shape of the electrodes may be triangular, oval, rectangular, polygonal, and other irregular patterns.

Alternatively, the number of the mounting holes is not limited to 3, or more than 3, and the mounting holes are not equiangularly arranged.

As shown in fig. 1B, the electrode of the present embodiment has an irregular shape as a whole, having an opening 11, a mounting hole 12 and a base 13, the opening 11 and the mounting hole 12 sharing part of the base 13, and having a first mounting hole 121, a second mounting hole 122 and a third mounting hole 123 disposed at intervals of 120 ° along the circumferential direction of the opening 11.

Further, the electrode further includes a fixing member 14, as shown in fig. 2 a, the electrode is square, and has an opening 11 and four mounting holes 12, the fixing member 14 has an opening 141, and the fixing member 14 is disposed perpendicular to the frame of the electrode for fixing the electrode plate.

As shown in fig. 2B, the electrode includes an opening 11, a mounting hole 12, a base 13, and a fixing member 14, the fixing member 14 is also a part of the base 13 and is fused with the base of the mounting hole 121, wherein the fixing member 14 has a hole 141, and this embodiment is a single circular fixing hole, and may be more than 1 fixing hole in practice, and the fixing hole has an indefinite shape and mainly plays a role of facilitating welding.

Further, in order to facilitate insertion of the electrode into the fixing position of the circuit board by the fixing member 14 for solder fixation, the fixing member 14 is preferably disposed in parallel with the line connecting the mounting hole 123 and the center of the opening 11.

As shown in fig. 3, the ion transmission funnel device comprises an electrode 1, a spacing element 2, an insulating support rod and a circuit board 5, wherein an ion channel 4 is formed by an opening 11 of the electrode 1 for ion transmission, the spacing element 2 is provided with a through hole, the insulating support rod passes through a mounting hole 12 of the electrode 1 and the through hole of the spacing element 2 and is used for fixing the electrode 1, the insulating support rod comprises a first insulating support rod 31, a second insulating support rod 32 and a third insulating support rod 33, the electrode further comprises a positioning piece 14, the positioning piece is arranged on one side of the mounting hole 12, the positioning pieces 14 on two adjacent electrodes 1 are respectively arranged on the second insulating support rod 32 and the third insulating support rod 33, and the positioning pieces are arranged at intervals, so that the relative area between the adjacent electrodes can be reduced, and the load capacitance of the whole device is reduced. The locating piece is fixedly installed with the circuit board 5, and is convenient to connect with a power supply. The positioning piece 14 is arranged on the circuit board 5 to divide the electrode 1 into two groups, namely one group of the positive electrodes of the radio frequency power supply and one group of the positive electrodes of the radio frequency power supply. The two-column arrangement mode is convenient for placing electronic components such as resistors, capacitors and the like on the circuit board.

According to the shape of the electrode, the designed ion transmission funnel device saves the space of the ion transmission funnel, maximally utilizes simple layout, and realizes the ion transmission with low mass-to-charge ratio.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (9)

1. An electrode for an ion transport funnel, the electrode comprising: the electrode plate fixing device comprises an opening, a mounting hole, a substrate and a fixing piece, wherein the fixing piece is arranged on the outer side of the mounting hole, and the fixing piece is perpendicular to the frame of the electrode and used for being inserted into the electrode plate for fixing.

2. The electrode of claim 1, wherein the electrode has a thickness of 0.1mm to 5mm.

3. The electrode of claim 1, wherein the number of mounting holes is 1 or more.

4. The electrode of claim 1, wherein the mounting hole is outside the aperture and is not in communication with the aperture.

5. The electrode of any one of claims 1-4, wherein the mounting holes comprise a first mounting hole, a second mounting hole, and a third mounting hole disposed circumferentially spaced 120 ° apart along the aperture.

6. The electrode of claim 5, wherein the aperture and the mounting hole share a portion of the substrate.

7. The electrode of any one of claims 1-4, wherein there are 1 said fixtures on each of said electrodes.

8. The electrode of claim 7, wherein the fixture has a fixture aperture.

9. An ion transfer funnel device comprising an electrode according to any one of claims 1 to 8.

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