Ion transport structure and mass spectrometer

Abstract

This utility model provides an ion transport structure and mass spectrometer, including a base, an electrode rod, a support member, wires, and fasteners. The electrode rod is disposed on the base. The support member is located on the outer periphery of the electrode rod. The wires are located at the end of the support member opposite to the electrode rod, and the wires are used to achieve electrical connection of the electrode rod. Fasteners are sequentially inserted through the wires and the support member and then connected to the electrode rod to connect the wires and the support member to the electrode rod. The technical solution of this utility model aims to ensure that the wires and the support member are stably connected to the electrode rod, guaranteeing the stable and reliable performance of the ion transport structure.

Description

Technical Field

[0001] The utility model relates to the technical field of mass spectrometers, in particular to an ion transmission structure and a mass spectrometer. Background Art

[0002] A mass spectrometer is an instrument that can ionize matter, separate it, and detect the ions. The ion transmission structure is an indispensable part of the mass spectrometer, which can control the transmission of ions along a predetermined path.

[0003] In the prior art, the ion transmission structure includes an electrode rod, a support body and a wire. In one of the connection methods between the wire and the electrode rod, the support body and the electrode rod are connected and fixed, and then the wire is connected to the support body using a connection structure. However, this connection method is prone to cause the connection between the support body and the electrode rod to loosen when the wire is installed, resulting in poor contact and reducing the performance of the ion transmission structure. Utility Model Content

[0004] The embodiments of the utility model provide an ion transmission structure and a mass spectrometer, aiming to stably connect a wire and a support member to an electrode rod, thereby ensuring the improvement of the performance of the ion transmission structure.

[0005] In a first aspect, an embodiment of the present utility model provides an ion transport structure, comprising:

[0006] Fixed seat;

[0007] An electrode rod, arranged on the fixing seat;

[0008] A support member, located at the outer periphery of the electrode rod;

[0009] A wire, located at an end of the support member away from the electrode rod, the wire being used to realize electrical connection of the electrode rod; and;

[0010] A fastener is sequentially passed through the wire and the support member and connected to the electrode rod, so as to connect the wire and the support member to the electrode rod.

[0011] Optionally, the fastener is threadedly connected to the electrode rod.

[0012] Optionally, the fastener is threadedly connected to the support member.

[0013] Optionally, a clamping groove is provided at one end of the support member facing the electrode rod, and the clamping groove is clamped with the electrode rod.

[0014] Optionally, an end surface of the support member facing the electrode rod is a curved surface.

[0015] Optionally, an end surface of the support member facing the electrode rod matches an outer circumferential surface of the electrode rod.

[0016] Optionally, a cross section of the electrode rod cut by a plane perpendicular to the axial direction is circular or elliptical.

[0017] Optionally, the wire includes a connecting portion and a non-connecting portion, and the fastener is connected to the electrode rod after being passed through the connecting portion and the supporting member;

[0018] An insulating material is provided on the outer periphery of the non-connecting portion.

[0019] Optionally, one fastener is passed through one end of the wire and one support member and then connected to one electrode rod, and another fastener is passed through the other end of the wire and another support member and then connected to another electrode rod.

[0020] In a second aspect, an embodiment of the utility model provides a mass spectrometer, comprising the ion transmission structure as described in the first aspect.

[0021] The ion transmission structure and mass spectrometer provided by the embodiment of the utility model are connected to the electrode rod after the fastener is inserted through the wire and the support member, so as to fasten the wire and the support member to the electrode rod. The fastener fastens the wire and the support member to the electrode rod once, which can avoid the loose connection between the support body and the electrode rod caused by multiple connections between the wire, the support member and the electrode rod, and is conducive to ensuring the connection stability between the wire and the support member and the electrode rod, so that the wire and the support member, and the support member and the electrode rod can all be in stable contact, ensuring the stable and reliable performance of the ion transmission structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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.

[0023] Figure 1 A schematic diagram of the structure of the ion transport structure provided by an embodiment of the utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the cross-section of the ion transport structure along line AA.

[0025] Description of main reference numerals:

[0026] 1. Fixing seat; 2. Electrode rod; 21. First mounting hole; 3. Support member; 31. Second mounting hole; 4. Wire; 5. Fastener. DETAILED DESCRIPTION

[0027] As described in the background technology, the electrode rod is connected to electricity through a wire, and the connection between the wire and the electrode rod is usually carried out in the following two ways: in the first connection method, a support body is welded to the electrode rod, and then the wire is connected to the support body by bolts. However, welding the electrode rod and the support body easily causes deformation of the electrode rod, affecting the assembly and use of the electrode rod. In the second connection method, a threaded hole is drilled on the electrode rod, and the threaded part of the support body is threadedly connected to the threaded hole of the electrode rod, and then the wire is connected to the support body by screws. However, when the screw connects the wire to the support body, it is easy to cause the connection between the support body and the electrode rod to loosen, resulting in poor contact between the support body and the electrode rod.

[0028] In order to solve the above problems, the utility model provides an ion transmission structure, which is connected to the electrode rod after being passed through the wire and the support by a fastener, so as to connect the wire and the support to the electrode rod. This connection method can not only avoid the electrode rod from being deformed due to heat, reduce the impact on the electrode rod structure, and ensure that the electrode rod can be assembled and used normally, but also avoid the loose connection between the support body and the electrode rod caused by multiple connections between the wire, the support and the electrode rod, which is beneficial to ensure the connection stability of the wire and the support to the electrode rod, and ensure that the performance of the ion transmission structure is stable and reliable.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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 of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0031] See also Figure 1 and Figure 2 The embodiment of the utility model provides an ion transmission structure, including a fixing seat 1, an electrode rod 2, a support member 3, a wire 4 and a fastener 5. The electrode rod 2 is arranged on the fixing seat 1. The support member 3 is located at the periphery of the electrode rod 2. The wire 4 is located at the end of the support member 3 away from the electrode rod 2, and the wire 4 is used to realize the electrical connection of the electrode rod 2. The fastener 5 is sequentially passed through the wire and the support member 3 and then connected to the electrode rod 2, so as to connect the wire 4 and the support member 3 to the electrode rod 2.

[0032] The ion transmission structure in this embodiment is connected to the electrode rod 2 after the fastener 5 is passed through the wire and the support member 3, so that the wire 4 and the support member 3 are connected to the electrode rod 2, so that the wire 4 and the support member 3 can be used to achieve electrical connection of the electrode rod 2. This connection method can not only avoid the electrode rod 2 from being deformed by heat, reduce the impact on the structure of the electrode rod 2, and ensure that the electrode rod 2 can be assembled and used normally, but also avoid the loose connection between the support body and the electrode rod 2 caused by multiple connections between the wire 4, the support member 3 and the electrode rod 2, which is conducive to ensuring the connection stability between the wire 4 and the support member 3 and the electrode rod 2, so that the wire 4 and the support member 3, and the support member 3 and the electrode rod 2 can all be in stable contact, ensuring the stable and reliable performance of the ion transmission structure.

[0033] For example, Figure 2 As shown, the fastener 5 abuts against the side of the wire 4 facing away from the fastener 5, and the fastener 5 is connected to the electrode rod 2 after passing through the wire 4 and the support member 3, pressing the wire 4 and the support member 3 onto the electrode rod 2, so that the wire 4 and the support member 3 are connected to the electrode rod 2.

[0034] In some embodiments, the electrode rod 2 is provided with a first mounting hole 21, the support member 3 is provided with a second mounting hole 31 penetrating through opposite ends thereof, and the wire 4 forms a third mounting hole. The first mounting hole 21, the second mounting hole 31, and the third mounting hole are correspondingly arranged, so that the fastener 5 can be connected to the first mounting hole 21 of the electrode rod 2 after being passed through the third mounting hole of the wire 4 and the second mounting hole 31 of the support member 3, so that the wire 4 and the support member 3 are stably connected to the electrode rod 2.

[0035] It can be understood that the ion transmission structure includes a plurality of electrode rods 2, for example, four electrode rods 2, six electrode rods 2 or eight electrode rods 2, and each electrode rod 2 is connected to a corresponding wire 4 via a support member 3 and a fastener 5. The support member 3 is a conductive member that can transmit the voltage on the wire 4 to the electrode rod 2.

[0036] In some embodiments, one fastener 5 is inserted through one end of the wire 4 and a support member 3 and then connected to one electrode rod 2, and another fastener 5 is inserted through the other end of the wire 4 and another support member 3 and then connected to another electrode rod 2. It can be understood that the two ends of the wire 4 can be connected to different electrode rods 2 respectively, so as to achieve electrical connection between the two electrode rods 2.

[0037] Exemplarily, third mounting holes are provided at opposite ends of the wire 4, a fastener 5 is passed through the third mounting hole at one end of the wire 4 and the second mounting hole 31 of a support member 3 and then connected to the first mounting hole 21 of an electrode rod 2, and another fastener 5 is passed through the third mounting hole at the other end of the wire 4 and the second mounting hole 31 of another support member 3 and then connected to the first mounting hole 21 of another electrode rod 2.

[0038] For example, Figure 2 As shown, the four electrode rods 2 of the ion transmission structure are evenly distributed in a ring, and an ion transmission channel is formed between the four electrode rods 2. The same electrode can be provided between two opposite electrode rods 2. For example, if two electrode rods 2 opposite to each other in the transverse direction are used as positive electrodes, the two electrode rods 2 can be connected to both ends of a wire 4, and the electrical connection between the two positive electrode rods 2 is achieved through the wire 4. If two electrode rods 2 opposite to each other in the longitudinal direction are used as negative electrodes, the two electrode rods 2 can be connected to both ends of another wire 4, and the electrical connection between the two negative electrode rods 2 is achieved through the wire 4.

[0039] In some embodiments, the fastener 5 is threadedly connected to the electrode rod 2. It can be understood that the threaded connection between the fastener 5 and the electrode rod 2 is conducive to ensuring the connection reliability between the wire 4, the support 3 and the electrode rod 2, and ensuring stable contact between the wire 4 and the support 3, and between the support 3 and the electrode rod 2.

[0040] Exemplarily, the fastener 5 includes a screw or a bolt. The outer periphery of the fastener 5 forms a threaded portion, and the first mounting hole 21 of the electrode rod 2 is a threaded hole. The threaded portion of the fastener 5 is threadedly connected to the first mounting hole 21 of the electrode rod 2, so that the fastener 5 and the electrode rod 2 are threadedly connected.

[0041] Of course, in other embodiments, the fastener 5 may be sequentially inserted through the wire 4 and the support member 3 and then snapped into the first mounting hole 21 of the electrode rod 2 to connect the wire 4 and the support member 3 to the electrode rod 2 .

[0042] In some embodiments, the fastener 5 is threadedly connected to the support member 3. It can be understood that the fastener 5 is threadedly connected to the electrode rod 2 and the support member 3 at the same time, which can further ensure the connection reliability between the wire 4, the support member 3 and the electrode rod 2, and ensure stable contact between the wire 4 and the support member 3, and between the support member 3 and the electrode rod 2.

[0043] Exemplarily, the first mounting hole 21 of the electrode rod 2 and the second mounting hole 31 of the support member 3 are both threaded holes. The threaded portion of the fastener 5 is passed through the third mounting hole of the conductor 4 and then threadedly connected to the second mounting hole 31 of the support member 3, and then threadedly connected to the third mounting hole 31 of the electrode rod 2.

[0044] In some embodiments, a slot is provided at one end of the support member 3 facing the electrode rod 2, and the slot is engaged with the electrode rod 2. It can be understood that the slot is provided on the support member 3 so that the support member 3 is engaged with the electrode rod 2 through the slot, thereby helping to define the relative position between the support member 3 and the electrode rod 2, preventing the support member 3 from rotating relative to the electrode rod 2 when the wire 4 and the electrode rod 2 are connected to the electrode rod 2 by the fastener 5, thereby facilitating reliable connection between the wire 4, the support member 3 and the electrode rod 2.

[0045] For example, Figure 2 As shown, the end surface of the support member 3 facing the electrode rod 2 is a concave surface, so that the end of the support member 3 facing the electrode rod 2 forms an arc-shaped groove, and is clamped with the electrode rod 2 through the groove.

[0046] Exemplarily, the groove wall surface of the clamping groove matches the outer peripheral surface of the electrode rod 2 .

[0047] In some embodiments, the end surface of the support member 3 facing the electrode rod 2 is a curved surface. It can be understood that the outer peripheral surface of the electrode rod 2 is mostly a curved surface. By making the end surface of the support member 3 facing the electrode rod 2 a curved surface, the curved surface abuts against the outer peripheral surface of the electrode rod 2, which can increase the contact area between the support member 3 and the electrode rod 2, thereby ensuring the connection stability between the support member 3 and the electrode rod 2.

[0048] Further, the end surface of one end of the support member 3 facing the electrode rod 2 matches the outer peripheral surface of the electrode rod 2. It can be understood that making the end surface of one end of the support member 3 facing the electrode rod 2 a curved surface matching the outer peripheral surface of the electrode rod 2 can not only further increase the contact area between the support member 3 and the electrode rod 2, and ensure the connection stability between the support member 3 and the electrode rod 2, but also realize the clamping of the support member 3 and the electrode rod 2, thereby preventing the support member 3 from rotating relative to the electrode rod 2 when the wire 4 and the support member 3 are connected to the electrode rod 2 by the fastener 5, thereby ensuring reliable contact between the support member 3 and the electrode rod 2.

[0049] For example, Figure 2 As shown, the outer peripheral surface of the electrode rod 2 is a convex arc surface, and the end surface of the support member 3 facing the electrode rod 2 is a concave arc surface, and the curvature of the concave arc surface of the support member 3 is the same as the curvature of the convex arc surface of the electrode rod 2, so that the concave arc surface of the support member 3 matches the convex arc surface of the electrode rod 2, and the two can fit tightly and realize the clamping connection between the support member 3 and the electrode rod 2.

[0050] In other embodiments, the end surface of the support member 3 facing the electrode rod 2 is a plane. The first mounting hole 21 of the support member 3 may be a stepped hole, the first mounting hole 21 includes a first hole segment and a second hole segment, the aperture of the first hole segment is larger than the aperture of the second hole segment, a stepped surface is formed between the first hole segment and the second hole segment, the stepped surface may be a plane matching the end surface of the support member 3 facing the electrode rod 2, so that the end of the support member 3 facing the electrode rod 2 can stably abut against the stepped surface, and the second mounting hole 31 of the support member 3 is arranged corresponding to the second hole segment, the fastener 5 is passed through the third mounting hole and the second mounting hole 31 and then connected to the second hole segment, so that the wire 4 and the support member 3 are connected to the electrode rod 2.

[0051] In some embodiments, the outer peripheral surface of the support member 3 is an arc surface, which is helpful to ensure the structural strength of the support member 3 itself and ensure the stable transmission of voltage.

[0052] For example, Figure 2 As shown, the outer peripheral surface of the support member 3 is a circular surface.

[0053] In some embodiments, the cross section of the electrode rod 2 cut by a plane perpendicular to the axial direction is circular or elliptical. It can be understood that the cross section of the electrode rod 2 is circular or elliptical, so that the electrode rod 2 can better load the capacitance, making the capacitance more stable, which is conducive to ensuring the stable and reliable performance of the ion transport structure.

[0054] Exemplarily, the electrode rod 2 may be linear or curved, and the cross-sectional areas of the electrode rod 2 at various locations along its axis may be equal or unequal, which may be adjusted according to actual conditions and is not limited here.

[0055] In some embodiments, the conductor 4 includes a connection portion and a non-connection portion, and the fastener 5 is connected to the electrode rod 2 after being passed through the connection portion and the support member 3. An insulating material is provided on the periphery of the non-connection portion. It can be understood that the provision of insulating material on the periphery of the non-connection portion of the conductor 4 can ensure the safety and stability of the voltage transmitted by the conductor 4.

[0056] For example, the conductor 4 may be made of copper or aluminum, and the insulating material may be polyethylene or glass fiber reinforced plastic.

[0057] The embodiment of the utility model also provides a mass spectrometer, including the ion transmission structure described above. It can be understood that the mass spectrometer with the above-mentioned ion transmission structure also has all the technical effects of the ion transmission structure, that is, it can avoid the electrode rod 2 from being deformed by heat, reduce the impact on the structure of the electrode rod 2, ensure that the electrode rod 2 can be assembled and used normally, and is also conducive to ensuring the connection stability between the wire 4 and the support member 3 connected to the electrode rod 2, so that the wire 4 and the support member 3, and the support member 3 and the electrode rod 2 can all be in stable contact, ensuring the stable and reliable performance of the ion transmission structure.

[0058] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An ion transport structure, characterized in that: Fixed seat; An electrode rod, arranged on the fixing seat; A support member, located at the outer periphery of the electrode rod; A wire, located at an end of the support member away from the electrode rod, the wire being used to realize electrical connection of the electrode rod; as well as, A fastener is sequentially passed through the wire and the support member and connected to the electrode rod, so as to connect the wire and the support member to the electrode rod.

2. The ion transport structure according to claim 1, characterized in that: The fastener is threadedly connected to the electrode rod.

3. The ion transport structure according to claim 2, characterized in that: The fastener is threadedly connected to the support member.

4. The ion transport structure according to claim 1, characterized in that: A clamping groove is provided at one end of the support member facing the electrode rod, and the clamping groove is clamped with the electrode rod.

5. The ion transport structure according to claim 1, characterized in that: The end surface of one end of the support member facing the electrode rod is a curved surface.

6. The ion transport structure according to claim 5, characterized in that: An end surface of the support member facing the electrode rod matches the outer peripheral surface of the electrode rod.

7. The ion transport structure according to any one of claims 1 to 6, characterized in that: The cross section of the electrode rod cut by a plane perpendicular to the axial direction is circular or elliptical.

8. The ion transport structure according to any one of claims 1 to 6, characterized in that: The wire comprises a connecting portion and a non-connecting portion, and the fastener is connected to the electrode rod after being passed through the connecting portion and the supporting member; An insulating material is provided on the outer periphery of the non-connecting portion.

9. The ion transport structure according to any one of claims 1 to 6, characterized in that: One fastener is passed through one end of the wire and one support member and then connected to one electrode rod, and another fastener is passed through the other end of the wire and another support member and then connected to another electrode rod.

10. A mass spectrometer, characterized in that: Comprising the ion transport structure according to any one of claims 1 to 9.

Images