Filament support mounting structure of mass spectrometer ion source

Abstract

The invention relates to a filament support mounting structure of a mass spectrometer ion source, which comprises a source heating block, a filament and a filament support, two sides of the source heating block are symmetrically provided with positioning grooves, one end of the filament support is matched with a groove in shape and is fixedly mounted in the positioning grooves, and the filament is mounted at the other end of the filament support. Through organic cooperation of the filament support and the source heating block positioning groove, accurate clamping of the filament support is achieved, the user operation difficulty is reduced through installation and disassembly of the filament support, replacement, cleaning and maintenance of the filament are simple and rapid, the maintainability of equipment is improved, and the stability of a mass spectrometer is guaranteed.

Description

Technical Field

[0001] The present invention relates to a filament bracket mounting structure for an ion source of a mass spectrometer, belonging to the technical field of mass spectrometer equipment installation. Background Art

[0002] A mass spectrometer, also known as a mass spectrometer, is an instrument used to separate and detect different isotopes. Its principle is that, based on the fact that charged particles can be deflected in an electromagnetic field, it separates and detects the composition of substances according to the mass differences of atomic, molecular or molecular fragment of substances. The ion source is one of the core components of a mass spectrometer. As an important part of the ion source, the stability and service life of the filament directly affect the performance and reliability of the mass spectrometer. The performance of the filament will decline or it will break after being used for a long time, and it needs to be replaced. When installing the filament with a traditional filament bracket, it is difficult to align its installation position, resulting in complex filament replacement operations, high requirements for technicians' operations, thereby increasing the maintenance difficulty and cost. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a filament bracket mounting structure for an ion source of a mass spectrometer, which is convenient for the installation and maintenance of the filament through a modular and detachable structure design.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A filament bracket mounting structure for an ion source of a mass spectrometer, comprising a source heating block, a filament and a filament bracket. Positioning grooves are symmetrically opened on both sides of the source heating block. One end of the filament bracket matches the shape of the groove and is fixedly installed in the positioning groove, and the filament is installed at the other end of the filament bracket.

[0006] Further, the filament bracket includes a filament fixing end and a Z-shaped fixing piece fixedly connected thereto. The filament is installed on the filament fixing end. The middle part of the Z-shaped fixing piece is stuck in the positioning groove, and one end of the Z-shaped fixing piece is buckled on the end face of the source heating block and fixed on the source heating block by an extended screw.

[0007] Further, the filament fixing end and the Z-shaped fixing piece are fixedly connected by screws.

[0008] Further, for the convenience of opening the positioning groove, the positioning groove is opened along the horizontal direction on both sides of the source heating block.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0010] 1. Through the organic cooperation between the filament bracket and the positioning groove of the source heating block, the present invention realizes the precise positioning of the filament bracket, reduces the operation difficulty of users through the installation and disassembly of the filament bracket, makes the replacement and cleaning and maintenance of the filament simple and fast, thereby improving the maintainability of the equipment and ensuring the stability of the mass spectrometer.

[0011] 2. The present invention simplifies the existing fixing method of the filament through the connection structure between the filament support and the source heating block, and realizes the rapid maintenance of the filament. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present invention.

[0013] Figure 2 It is an exploded schematic diagram of a preferred embodiment of the present invention.

[0014] Figure 3 It is a side schematic diagram of a preferred embodiment of the present invention.

[0015] Figure 4 It is Figure 3 a right view of

[0016] Figure 5 It is a sectional view taken along A-A in Figure 3 ...

[0017] Figure 6 It is a sectional view taken along B-B in Figure 4 ...

[0018] Figure 7 It is a schematic structural diagram of the filament and the filament support in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the present invention in detail with reference to the drawings and specific embodiments. According to the following description, the purpose, technical solution and advantages of the present invention will be clearer. It should be noted that the described embodiments are the preferred embodiments of the present invention, rather than all the embodiments.

[0020] Combined with Figure 1 ... Figure 2 and Figure 3 shown, a mounting structure of a filament support of a mass spectrometer ion source includes a source heating block 1, a filament 2 and a filament support 3. Symmetric positioning grooves 1a are horizontally opened on both sides of the source heating block 1. One end of the filament support 3 matches the shape of the groove and is fixedly installed in the positioning groove 1a, and the filament 2 is installed at the other end of the filament support 3.

[0021] As a preferred solution, and referring to Figure 7, the filament bracket 3 includes a filament fixing end 3a and a Z-shaped fixing piece 3b. The filament fixing end 3a and the Z-shaped fixing piece 3b can be fixedly connected by a screw 9. The filament 2 is installed on the filament fixing end 3a. The middle part of the Z-shaped fixing piece 3b is stuck in the positioning groove 1a. One end of the Z-shaped fixing piece 3b is buckled on the end face of the source heating block 1 and fixed on the source heating block 1 by an extension screw 4.

[0022] Combined with Figures 4 to 6 As shown, the top end of the ionization chamber 7 passes through the hole in the middle of the source heating block 1 and is then fixed with a nut. The spacer 6 is sleeved between the ionization chamber 7 and the source heating block 1 for sealing. The ionization chamber 7 is fixed on the ion source cylinder 8. The guiding port 5 is screwed onto the ion source cylinder 8. The filament 2 is fixed on the filament bracket 3, and then the filament bracket 3 is inserted into the positioning groove on the side of the source heating block 1 and fixed on the source heating block 1.

[0023] Through the organic cooperation between the filament bracket and the positioning groove of the source heating block, the present invention realizes the precise positioning of the filament bracket, reduces the operation difficulty of the user by installing and disassembling the filament bracket, makes the replacement and cleaning and maintenance of the filament simple and fast, thereby improving the maintainability of the equipment and ensuring the stability of the mass spectrometer.

[0024] The above description is only an illustration of the preferred embodiments of the present invention and does not limit the protection scope of the present invention. Obviously, any person skilled in the art can easily think of substitutions or changes based on the above embodiments to obtain other embodiments, and these should all be covered within the protection scope of the present invention.

Claims

1. A filament support mounting structure for a mass spectrometer ion source, comprising a source heating block, a filament, and a filament support, characterized in that: Positioning grooves are symmetrically formed on both sides of the source heating block. One end of the filament support matches the shape of the groove and is fixedly installed in the positioning groove, and the filament is installed at the other end of the filament support.

2. The filament support mounting structure for a mass spectrometer ion source according to claim 1, characterized in that: The filament support includes a filament fixed end and a Z-shaped fixing piece fixedly connected thereto. The filament is installed on the filament fixed end. The middle part of the Z-shaped fixing piece is stuck in the positioning groove, and one end of the Z-shaped fixing piece is buckled on the end face of the source heating block and fixed to the source heating block by an extended screw.

3. The filament support mounting structure for a mass spectrometer ion source according to claim 2, characterized in that: The filament fixed end and the Z-shaped fixing piece are fixedly connected by screws.

4. The filament support mounting structure for a mass spectrometer ion source according to claim 1, characterized in that: The positioning grooves are formed along the horizontal direction on both sides of the source heating block.

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