Rapid wiring mechanism for ion source electrode of thermal ionization mass spectrometer

Abstract

The utility model discloses a rapid wiring mechanism for an ion source electrode of a thermal ionization mass spectrometer, which comprises a ceramic fixing frame, an electrode holder and a connecting bolt, the ceramic fixing frame is provided with a connecting part and an electrode holder mounting part, the electrode holder mounting part extends to form a mistake-proof bump, and the electrode holder mounting part is provided with a first connecting screw hole; the electrode holder comprises an electrode holder body and a plurality of probes, the plurality of probes are vertically fixed on the electrode holder body at intervals, the electrode holder body is provided with a groove matched with the mistake-proof bump and a second connecting screw hole matched with the first connecting screw hole, and the connecting bolt detachably penetrates through the first connecting screw hole and the second connecting screw hole; according to the utility model, the ceramic fixing frame and the electrode holder are ensured to have only one installation direction by utilizing the matching of the error-proof convex block and the groove and the matching of the first connecting screw hole and the second connecting screw hole, so that the possibility of installation errors of the ceramic fixing frame and the electrode holder is avoided, and the installation process is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to thermal ionization mass spectrometer technical field, concretely relates to a thermal ionization mass spectrometer ion source electrode quick wiring mechanism. BACKGROUND

[0002] The mass spectrometer aims at determining the chemical element isotope composition in the sample, the function of the ion source is to convert the element into positive ion form and accelerate and focus into an ion beam, facilitating subsequent charged ion magnetic field analysis. The function of the ion receiver is to collect the ions after electromagnetic analysis, the charged ion movement has current, the current is amplified through external equipment, the collected ion ratio can be measured, and the isotope ratio of different mass-to-charge ratios is measured. The working principle of the thermal ionization magnetic mass spectrometer is based on the spatial separation of the elements of the solid sample to be analyzed, the elements are ionized by different work functions and form an ion beam, and then the content of each component is determined. In order to achieve this goal, the sample is spotted on the sample support, and then ionized by current into the ion optical lens system of the mass spectrometer, collected into a narrow beam by the ion optical system of the ion source, and accelerated to a much higher energy than the initial thermal energy propagation. The generated single ion beam is guided into a transverse uniform magnetic field (analyzer), where it is divided into multiple beams, each beam containing only one m / e value (ion mass / charge) of ion. By changing the induction of the magnetic field, the ion beam of the m / e value required for measurement can be guided into the Faraday cup of the ion receiver. The ions of each ion beam provide their charges to the ion collector, that is, they generate current in their circuit. The size of the current can be used as a measure of the content of the component in the sample gas.

[0003] For example, the low-voltage magnetic control cathode ion source provided in patent 201820332166.7 includes a vacuum assembly, a spacing

[0004] The cathode assembly and the anode assembly are arranged, the vacuum assembly includes a support cover, the support cover is provided with a gas interface of a process gas and an electric field assembly; the cathode assembly includes an ion excitation cavity; the support cover and the cavity of the ion excitation cavity are connected, and a vacuum cavity is formed between the support cover and the ion excitation cavity; the ion excitation cavity is provided with a gas interface for introducing the process gas into the cavity, a cathode magnet, a cathode target arranged at intervals with the cathode magnet, and a cathode terminal, the cathode terminal is connected with a negative terminal; the anode assembly includes an anode cavity and an anode magnet arranged in the anode cavity, an anode terminal, and the anode terminal is connected with a positive terminal; the ion excitation cavity faces the anode assembly.

[0005] But its existence problem is: the ion source of thermal ionization mass spectrometer needs to clean the electrode sheet regularly. The electrode is directly connected with the vacuum feed electrode through the connector, and since the internal space of the ion source cavity is limited, the electrode needs to be reconnected every time it is disassembled and washed, and in order to prevent the electrode parameter from being wrong, the position of each line sequence needs to be paid attention to, and the electrical parameter needs to be checked after the connection is completed. The whole process is relatively complicated and prone to errors. Practical new type content

[0006] The utility model discloses a thermal ionization mass spectrometer ion source electrode quick wiring mechanism, which overcomes the above technical deficiencies and solves the technical problem of complicated electrode reconnection in the prior art.

[0007] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides a thermal ionization mass spectrometer ion source electrode quick wiring mechanism, which includes:

[0009] The ceramic fixing frame has a connecting part and an electrode seat mounting part, the electrode seat mounting part is fixed with the connecting part and extends to form an error-proof protrusion, and a first connecting screw hole is formed in the electrode seat mounting part;

[0010] The electrode seat includes a pole seat body and a plurality of probes, the probes are vertically fixed on the pole seat body at intervals, a groove matched with the error-proof protrusion and a second connecting screw hole matched with the first connecting screw hole are formed in the pole seat body, and

[0011] The connecting bolt is detachably arranged in the first connecting screw hole and the second connecting screw hole.

[0012] In some embodiments, a plurality of connecting holes are formed in the connecting part, a fixing bolt is arranged in the connecting hole, and the connecting part is detachably fixed with the ion source cavity through the fixing bolt.

[0013] In some embodiments, the electrode seat is plate-shaped, and the shapes of the two ends are different.

[0014] In some embodiments, the cross-sectional area of one end of the electrode seat gradually decreases in the direction away from the other end.

[0015] In some embodiments, a plurality of elastic probes are further included, and the elastic probes are fixed on the ceramic fixing frame.

[0016] In some embodiments, the ceramic fixing frame further includes an elastic probe mounting part, the elastic probe mounting part is fixed with the connecting part, and the elastic probes are fixed on the elastic probe mounting part.

[0017] In some embodiments, the elastic probe mounting portion is provided with a mounting groove, and a plurality of through holes are formed in the bottom surface of the mounting groove, and the elastic probe is fixed in the through holes.

[0018] In some embodiments, the elastic probe comprises a probe piece, a fixing piece, and an elastic piece, the fixing piece is fixed in the through hole, one end of the elastic piece is fixed with the fixing piece, and the other end of the elastic piece is connected with the probe piece, and the probe piece penetrates through the fixing piece.

[0019] In some embodiments, the probe piece comprises a probe portion and an abutting ring, the probe portion penetrates through the fixing piece, and the abutting ring is fixed on the probe portion, the elastic piece is vertically arranged in the fixing piece, one end of the elastic piece is fixed with the fixing piece, and the other end of the elastic piece is fixed with the abutting ring.

[0020] In some embodiments, when the elastic piece is compressed to the minimum state, the top of the probe portion is still in the mounting groove.

[0021] Compared with the prior art, the ion source electrode quick wiring mechanism of the thermal ionization mass spectrometer provided by the utility model has the advantages that: the matching of the mistake-proof convex block and the groove and the matching of the first connecting screw hole and the second connecting screw hole ensure that the ceramic fixing frame and the electrode seat only have one installation direction, so that the possibility of installation error of the ceramic fixing frame and the electrode seat is avoided, and therefore the problem of line sequence error does not occur, the process of checking the electrical parameters can be omitted, and the ion source after cleaning can be directly powered on for use.

[0022] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, and the preferred embodiments of the utility model are described in detail below with the help of the drawings. The specific implementation of the utility model is given in detail by the following embodiments and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structure schematic diagram of the ion source electrode quick wiring mechanism of the thermal ionization mass spectrometer provided by the utility model;

[0024] Figure 2 is Figure 1 The structure diagram of the elastic probe.

[0025] Marked as:

[0026] 1-ceramic fixing frame, 11-connection part, 12-electrode holder mounting part, 13-fixing bolt, 14-elastic probe mounting part, 141-mounting groove, 2-electrode holder, 21-electrode holder body, 22-probe, 3-connection bolt, 4-elastic probe, 41-probe part, 411-probe part, 412-abutment ring, 42-fixing part, 43-elastic part. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be combined with the drawings and examples, and the utility model will be further described in detail. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0028] Please refer to Figure 1 , 2 The utility model provides a thermal ionization mass spectrometer ion source electrode quick wiring mechanism, include: ceramic fixing frame 1, electrode holder 2 and connection bolt 3, ceramic fixing frame 1 has connection part 11 and electrode holder mounting part 12, electrode holder mounting part 12 with connection part 11 fixed and extends and forms mistake prevention bump, be equipped with first connecting screw hole on electrode holder mounting part 12, electrode holder 2 include electrode holder body 21 and a plurality of probes 22, a plurality of probes 22 are fixed vertically on electrode holder body 21 at intervals, be equipped with the recess that matches with mistake prevention bump and the second connecting screw hole that matches with first connecting screw hole on electrode holder body 21, connection bolt 3 can be detachably threaded in first connecting screw hole and second connecting screw hole.

[0029] In the utility model, thermal ionization mass spectrometer ion source electrode quick wiring mechanism, include: ceramic fixed frame 1, electrode seat 2 and connecting bolt 3 have connecting portion 11 and electrode seat mounting portion 12, the mistake-proof boss is formed on electrode seat mounting portion 12 and is equipped with the first connecting screw hole, electrode seat 2 includes pole seat body 21 and a plurality of probes 22, a plurality of probes 22 are vertically fixed on pole seat body 21 at intervals, the recess matched with mistake-proof boss and the second connecting screw hole matched with first connecting screw hole are formed on pole seat body 21, connecting bolt 3 is detachably arranged in first connecting screw hole and second connecting screw hole, the utility model utilizes the matching of mistake-proof boss and recess and the matching of first connecting screw hole and second connecting screw hole to ensure that ceramic fixed frame 1 and electrode seat 2 only have an installation direction, so as to avoid the possibility that ceramic fixed frame 1 and electrode seat 2 are installed incorrectly, so there will be no problem of line sequence error, the process of checking electrical parameters can be saved, and the ion source after cleaning can be directly powered on.

[0030] Specifically, a plurality of connecting holes are formed in the connecting portion 11, a fixing bolt 13 is arranged in the connecting hole, and the connecting portion 11 is detachably fixed with the ion source cavity through the fixing bolt 13.

[0031] Further, the electrode seat 2 is plate-shaped, and the shapes of the two ends thereof are different. The purpose of this design is to facilitate the user to identify the installation direction of the electrode seat 2 and avoid the electrode seat 2 from being installed incorrectly.

[0032] Further, the cross-sectional area of one end of the electrode seat 2 gradually decreases in the direction away from the other end. The purpose of this design is to facilitate the user to identify the installation direction of the electrode seat 2 and avoid the electrode seat 2 from being installed incorrectly.

[0033] Specifically, it further includes a plurality of elastic probes 4, and the elastic probes 4 are fixed on the ceramic fixed frame 1.

[0034] Further, the ceramic fixed frame 1 further includes an elastic probe mounting portion 14, the elastic probe mounting portion 14 is fixed with the connecting portion 11, and the elastic probes 4 are fixed on the elastic probe mounting portion 14.

[0035] Further, the elastic probe mounting portion 14 is provided with a mounting recess 141, a plurality of through holes are formed in the bottom surface of the mounting recess 141, and the elastic probes 4 are fixed in the through holes.

[0036] Further, the elastic probe 4 comprises a probe piece 41, a fixing piece 42 and an elastic piece 43, the fixing piece 42 is fixed in the through hole, one end of the elastic piece 43 is fixed with the fixing piece 42, the other end is connected with the probe piece 41, and the probe piece 41 is arranged in the fixing piece 42.

[0037] Further, the probe piece 41 comprises a probe part 411 and an abutting ring 412, the probe part 411 is arranged in the fixing piece 42, the abutting ring 412 is fixed on the probe part 411, the elastic piece 43 is vertically arranged in the fixing piece 42, one end of the elastic piece 43 is fixed with the fixing piece 42, and the other end is fixed with the abutting ring 412. When the probe part 411 is lifted by external force, the abutting ring 412 extrudes the elastic piece 43, so that the elastic piece 43 is deformed, and when the external force of the probe part 411 disappears, the elastic piece 43 restores the shape and pushes the probe part 411 to descend.

[0038] In the embodiment, the elastic piece 43 is a spring.

[0039] Further, when the elastic piece 43 is compressed to the minimum state, the top of the probe part 411 is still in the mounting groove 141. The purpose of such arrangement is to protect the probe part 411 from being damaged by collision.

[0040] The utility model discloses a thermal ionization mass spectrometer ion source electrode quick wiring mechanism, including ceramic fixing frame, electrode seat and connecting bolt, ceramic fixing frame has connecting portion and electrode seat installation part, the electrode seat installation part is extended and forms the mistake prevention boss, is set up with the first connecting screw hole on the electrode seat installation part, the electrode seat includes the pole seat body and a plurality of probes, a plurality of the probe is vertically fixed on the pole seat body at intervals, the pole seat body is set up with the recess that matches with the mistake prevention boss and the second connecting screw hole that matches with the first connecting screw hole, the connecting bolt is detachable and is arranged in the first connecting screw hole and the second connecting screw hole, the utility model discloses utilize the matching of mistake prevention boss and recess and the matching of the first connecting screw hole with the second connecting screw hole ensure that the ceramic fixing frame with electrode seat only has an installation direction, thereby avoiding the possible of the ceramic fixing frame with electrode seat appears installation error, therefore can not appear the problem of line sequence error, can dispense with the process of checking electric parameter, and the ion source after cleaning can be directly used with electricity.

[0041] The specific implementation of the utility model above does not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A thermal ionization mass spectrometer ion source electrode quick wiring mechanism, characterized in that, It includes: A ceramic fixing frame, having a connecting part and an electrode seat mounting part, the electrode seat mounting part is fixed and extended with the connecting part to form an error-proof bump, a first connecting screw hole is opened on the electrode seat mounting part; An electrode seat, including an electrode seat body and a plurality of probes, the plurality of probes are vertically fixed on the electrode seat body at intervals, a groove matched with the error-proof bump and a second connecting screw hole matched with the first connecting screw hole are opened on the electrode seat body, and A connecting bolt, which is detachably threaded in the first connecting screw hole and the second connecting screw hole.

2. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism according to claim 1, characterized in that, A plurality of connecting holes are opened on the connecting part, a fixing bolt is arranged in the connecting hole, and the connecting part is detachably fixed with the ion source cavity through the fixing bolt.

3. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism of claim 1, wherein, The electrode seat is plate-shaped, and the shapes of the two ends are different.

4. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism of claim 3, wherein, The cross-sectional area of one end of the electrode seat gradually decreases in the direction away from the other end.

5. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism of claim 1, wherein, It also includes a plurality of elastic probes, which are fixed on the ceramic fixing frame.

6. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism of claim 5, wherein, The ceramic fixing frame also includes an elastic probe mounting part, which is fixed with the connecting part, and the elastic probe is fixed on the elastic probe mounting part.

7. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism of claim 6, wherein, An installation groove is opened on the elastic probe mounting part, a plurality of through holes are opened on the bottom surface of the installation groove, and the elastic probe is fixed in the through hole.

8. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism of claim 7, wherein, The elastic probe includes a probe piece, a fixing piece, and an elastic piece, the fixing piece is fixed in the through hole, one end of the elastic piece is fixed with the fixing piece, the other end is connected with the probe piece, and the probe piece is threaded in the fixing piece.

9. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism of claim 8, wherein, The probe piece includes a probe part and an abutment ring, the probe part is threaded in the fixing piece, the abutment ring is fixed on the probe part, the elastic piece is vertically arranged in the fixing piece, one end of the elastic piece is fixed with the fixing piece, and the other end of the elastic piece is fixed with the abutment ring.

10. The thermal ionization mass spectrometer ion source electrode quick wiring mechanism of claim 9, wherein, When the elastic piece is compressed to the minimum state, the top of the probe part is still in the installation groove.

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