Ion source interface dismounting device

Abstract

The utility model provides an ion source interface dismounting device, which is characterized in that the rotating radiuses of the outer edges of rotating parts are different, and the rotating parts are arranged in an accommodating part; the limiting unit is used for limiting the rotating piece to move in the axial direction; the force applying piece is arranged on the rotating piece; the centers of at least two rotating arms are arranged on the accommodating part through a rotating shaft, one end of each rotating arm is in contact with the outer edge of the rotating piece, the other end of each rotating arm is provided with a hook-shaped structure suitable for being connected with the ion source interface, and the resistance piece is used for blocking rotation of the rotating arms. The utility model has the advantages of simple structure and the like.

Description

Technical Field

[0001] The utility model relates to mass spectrometry technology, in particular to an ion source interface disassembly device. Background Art

[0002] A mass spectrometer is an instrument that converts molecules into charged ions, separates and detects ions in the gaseous state according to their mass-to-charge ratio. The mass spectrometer has a sophisticated ion channel system (ion optical system) inside, which works in a high vacuum environment and must be clean and free of contaminants.

[0003] In a typical LC / MS analysis system, the separated chemical components leave the LC column and enter the mass spectrometer through the transmission pipeline, where they are ionized and analyzed. Charged particles are often mixed with neutral ions and enter the ion source interface at the same time under the action of airflow and electric field. There is a neutral ion collector inside the ion source interface, one of the important functions of which is to remove neutral ions. After the mass spectrometer has been working for a period of time, the neutral ion collector needs to be cleaned regularly. Therefore, the ion source interface needs to be maintained regularly. The ion source interface is usually a detachable structure, and the ion source interface needs to be removed for maintenance. However, it is very difficult to remove the ion source interface for the following reasons:

[0004] 1. There is a sealing ring on the end face of the ion source interface. Under the action of negative pressure vacuum, the sealing ring only adheres to the surface of the part.

[0005] 2. There are many electrical connection pins at the end of the ion source interface, and it takes sufficient force to pull them out through the external protrusions of the ion source interface.

[0006] In order to solve the problem of difficult disassembly, the prior art adopts the following method:

[0007] 1. Grasp the protrusion of the ion source interface with your hand and pull it out of the vacuum chamber with force. The disadvantage is that the space for grabbing is relatively small and it requires sufficient force to pull it out.

[0008] 2. There is a gap just above the contact surface between the ion source interface and the vacuum chamber. Insert a flat-blade screwdriver into the gap and use the lever principle to tilt it outward to move the ion source interface outward by 3-4 mm, and then gently pull the ion source interface out by hand. The disadvantage is that there is mechanical damage to the ion source interface, which seriously affects the working performance of the mass spectrometer. Summary of the invention

[0009] In order to solve the deficiencies in the above-mentioned prior art solutions, the utility model provides an ion source interface disassembly device.

[0010] The purpose of this utility model is achieved through the following technical solutions:

[0011] An ion source interface disassembly device, the ion source interface disassembly device comprising:

[0012] An accommodating portion and a rotating member, wherein the rotating member has a different rotation radius at the outer edge and is disposed in the accommodating portion;

[0013] A limiting unit, the limiting unit is used to limit the movement of the rotating member in the axial direction;

[0014] A force applying member, wherein the force applying member is arranged on the rotating member;

[0015] Rotating arms and resistance members, the centers of at least two rotating arms are arranged on the accommodating portion through a rotating shaft, one end of the rotating arm contacts the outer edge of the rotating member, and the other end has a hook structure suitable for connecting to the ion source interface, and the resistance member is used to hinder the rotation of the rotating arm.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Simple structure;

[0018] Through the combined design of the rotating member and the rotating arm, when the rotating member rotates in the accommodating portion, the distance between the hook-shaped structures of the rotating arm is adjusted, thereby clamping the ion source interface and providing axial force, and the structure is simple;

[0019] 2. Save effort;

[0020] The rotating arm uses the (effort-saving) lever principle. The rotating part applies a small force on one end of the rotating arm, and a larger force can be applied on the other end, saving time and effort during the disassembly process;

[0021] 3.Avoid mechanical damage;

[0022] When disassembling the ion source interface, it is only necessary to rotate the rotating part without using tools such as a screwdriver, thus avoiding mechanical damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. In the drawings:

[0024] Figure 1 It is a structural schematic diagram of an ion source interface disassembly device according to an embodiment of the utility model;

[0025] Figure 2 is another structural schematic diagram of the ion source interface disassembly device according to an embodiment of the utility model;

[0026] Figure 3is a schematic structural diagram of a rotating arm according to an embodiment of the utility model;

[0027] Figure 4 It is a structural schematic diagram of a receiving portion and a rotating member according to an embodiment of the utility model;

[0028] Figure 5 It is a schematic diagram of the working state of the ion source interface disassembly device according to an embodiment of the utility model. DETAILED DESCRIPTION

[0029] Figure 1-Figure 5 The following description describes optional specific embodiments of the present invention to teach those skilled in the art how to implement and reproduce the present invention. In order to teach the technical solution of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art should understand that variations or substitutions derived from these specific embodiments will be within the scope of the present invention. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of the present invention. Thus, the present invention is not limited to the following optional specific embodiments, but is only limited by the claims and their equivalents.

[0030] Example 1

[0031] The ion source interface disassembly device of embodiment 1 of the utility model is as follows: Figure 1-Figure 2 As shown, the ion source interface disassembly device comprises:

[0032] An accommodating portion 4 and a rotating member 6, wherein the rotating member 6 has different rotation radii at the outer edge and is disposed in the accommodating portion 4;

[0033] a limiting unit 8, the limiting unit 8 is used to limit the movement of the rotating member 6 in the axial direction;

[0034] A force applying member 5, wherein the force applying member 5 is arranged on the rotating member 6;

[0035] The rotating arms 2 and the resistance members 3 , with at least two rotating arms 2 having their centers disposed on the receiving portion 4 through the rotating shaft 1 .

[0036] like Figure 3 As shown, one end 21 of the rotating arm 2 contacts the outer edge of the rotating member 6, and the other end has a hook structure 22 suitable for connecting to the ion source interface, and the resistance member 3 is used to hinder the rotation of the rotating arm 2; when the rotating member 6 rotates, the distance between the hook structures of at least two rotating arms 2 increases or decreases.

[0037] In order to make the rotating member 6 rotate stably in situ, further, the limiting unit 8 includes:

[0038] The cylindrical portion 82 is fixed on the accommodating portion 4 , and part of the rotating member 6 is located in the cylindrical portion 82 ; the cylindrical portion 82 has a through hole 83 , and the force applying member 5 passes through the through hole 83 and is fixed on the rotating member 6 .

[0039] In order to make the rotating member 6 rotate stably in place, further, the through hole 83 is arranged in the radial direction of the cylindrical portion 82 and extends along the circumferential direction of the cylindrical portion 82, that is, the central axis of the rotating member 6 is perpendicular to the extension direction of the through hole 83, and the rotating member 6 has no displacement in its axial direction.

[0040] In order to stably arrange the rotating member to prevent it from moving in the axial direction, further, the limiting unit 8 further includes:

[0041] A step 12 is provided on the inner side of the accommodation portion 4 and is used to block the rotating member 6 .

[0042] In order to make the rotating member 6 rotate stably inside the accommodating portion 4, further, as Figure 4 As shown, the interior of the accommodation portion 4 has a plurality of protrusions 11 , and the outer edge of the rotating member 6 contacts the protrusions 11 .

[0043] In order to prevent the hook structure from sliding on the ion source interface, the ion source interface disassembly device further includes:

[0044] A gripper 7 , wherein the gripper 7 is fixed on the limiting unit 8 .

[0045] In order to conveniently drive the rotating member 8 to rotate, further, the force applying member 5 is a wrench, extending along the radial direction of the rotating member 6 .

[0046] The assembly method of the ion source interface disassembly device of the utility model embodiment is:

[0047] Install the rotating arm 2 and the resistance member 3 on the accommodating portion 4;

[0048] Part of the rotating member 6 is arranged in the accommodating portion 4, and one end of the rotating arm 2 contacts the outer edge of the rotating member 6;

[0049] Fixing the limiting unit 8 on the accommodating portion 4;

[0050] The force applying member 5 passes through the limiting unit 8 and is fixed on the rotating member 6 .

[0051] The working method of the ion source interface disassembly device of the utility model embodiment is:

[0052] The force applying member 5 is used to rotate the rotating member 6, so that the distance between one ends of the plurality of rotating arms 2 contacting the outer edge of the rotating member 6 becomes smaller, and the distance between the other ends of the plurality of rotating arms 2 becomes larger;

[0053] like Figure 5 As shown, the other end of the rotating arm 2 is hooked with the ion source interface 10, the receiving portion 4 is against the base 9, and the ion source interface 10 is installed in the base 9;

[0054] The rotating member 6 rotates, so that the distance between one ends of the plurality of rotating arms 2 contacting the outer edge of the rotating member 6 increases, and the distance between the other ends of the plurality of rotating arms 2 decreases;

[0055] The hook structure applies radial and axial forces to the ion source interface 10 , so that the ion source interface 10 is separated from the base 9 .

[0056] Example 2

[0057] An application example of the ion source interface disassembly device according to embodiment 1 of the utility model.

[0058] In this application example, Figure 1 , Figure 4 As shown, the accommodating portion 4 is a cylindrical structure with a step 12 inside to block the passage of the rotating member 6. The inner wall of the portion of the accommodating portion 4 that accommodates the rotating member 6 has two sets of protrusions 11 in opposite positions, so that the rotating member is located between the protrusions 11 and on the inner side of the inner wall.

[0059] like Figure 2 As shown, the side wall of the accommodating portion 4 has two oppositely positioned notches 41 , which extend in a direction parallel to the central axis of the accommodating portion 4 , and a line connecting the centers of the two notches 41 intersects and is perpendicular to the central axis of the accommodating portion 4 .

[0060] like Figure 3 As shown, one end 21 of the rotating arm 2 is an arc-shaped protrusion, and the other end is a bent hook-shaped structure 22. The middle part of the rotating arm 2 is arranged in the notch 41 through the rotating shaft 1, and the rotating shaft 1 is perpendicular to the central axis and radial direction of the accommodating portion 4. The resistance member 3 is a torsion spring, which is arranged on the rotating shaft 1, driving the rotating arm 2 to press the outer edge of the rotating member 6, that is, preventing the rotating arm 2 from rotating around its rotating shaft 1.

[0061] like Figure 2 , Figure 4 As shown, the first part of the rotating member 6 is cylindrical, and the cross section of the outer wall of the second part 62 is arc-shaped, and the distance to the central axis of the rotating member 6 varies. For example, the arc in this embodiment is an ellipse. The second part 62 is in the receiving portion 4 and is blocked by the step 12.

[0062] The limiting unit 8 includes a cylindrical portion 82, and the end portion 81 is a flange structure, which is fixed to the end of the accommodating portion 4 by a plurality of screws, so that the first portion 61 is located in the cylindrical portion 82. The outer diameter of the first portion 61 matches the inner diameter of the cylindrical portion 82 (e.g., they are equal or the outer diameter is slightly smaller), preventing the first portion 61 from moving in its radial direction, thereby ensuring the stability of the position of the rotating member 6.

[0063] The side wall of the cylindrical portion 82 has two through holes 83 extending in the circumferential direction. The through holes 83 are arc-shaped, and the central axis of the cylindrical portion 82 is perpendicular to the extending direction of the arc of the through hole 83. The force-applying member 5 adopts a first set of wrenches (two wrenches), which pass through the through hole 83 and are fixed on the first part 61, so that the rotating member 6 is confined between the step 12 and the through hole 83, achieving stable in-situ rotation. The gripper 7 adopts a second set of wrenches, which are arranged on the outer edge of the cylindrical portion 82. Compared with the first set of wrenches, the second set of wrenches are farther away from the accommodating portion 4.

[0064] The assembly method of the ion source interface disassembly device of the utility model embodiment is as follows:

[0065] Install the rotating arm 2 and the resistance member 3 on the two notches 41 of the accommodating portion 4;

[0066] The hook structures of the two rotating arms 2 are pressed to increase the spacing between one end of the rotating arms 2. At the same time, the second portion 62 of the rotating member 6 is arranged in the accommodating portion 4. The second portion 62 is blocked by the step 12 and is located between the protrusions 11 and inside the inner wall. One end (arc-shaped protrusion) of the rotating arm 2 contacts the outer edge of the second portion 62.

[0067] The first portion 61 enters the cylindrical portion 82 of the limiting unit 8, and the limiting unit 8 is fixed to the accommodating portion 4 by screws;

[0068] The first set of wrenches passes through the through hole 83 and is fixed on the first portion 61 of the rotating member 6 .

[0069] The working method of the disassembly device of the ion source interface of the embodiment of the utility model is:

[0070] Press the second set of wrenches to make the accommodating portion 4 abut against the base 9 and prevent the accommodating portion 4 from rotating, and the ion source interface 10 is installed in the base 9;

[0071] The first set of wrenches is driven to rotate in the through hole 83, so that the distance between one ends of the plurality of rotating arms 2 contacting the outer edge of the rotating member 6 becomes smaller, and at the same time, the distance between the other ends of the plurality of rotating arms 2 becomes larger to the maximum. At this time, the distance between one ends of two rotating arms 2 is the semi-axis length of the ellipse;

[0072] like Figure 5As shown, the bent hook structure at the other end hooks the ion source interface 10;

[0073] Drive the first set of wrenches to rotate in the through hole 83, so that the distance between one ends of the multiple rotating arms 2 in contact with the outer edge of the rotating member 6 becomes larger, and the distance between the other ends of the multiple rotating arms 2 becomes smaller; at this time, the rotating arm 2 becomes a force-saving lever, and the smaller force applied by the outer edge of the rotating member 6 to the arc-shaped protrusion is converted into a larger force applied by the hook structure 22 to the ion source interface 10.

[0074] The hook structure 22 applies radial and axial forces to the ion source interface 10 , wherein the axial force causes the ion source interface 10 to separate from the base 9 .

[0075] Example 3

[0076] According to the application example of the ion source interface disassembly device of embodiment 1 of the utility model, the difference from embodiment 2 is that:

[0077] 1. No steps are provided in the accommodation portion, and the axial position limitation of the rotating part depends on the first set of wrenches, which are located in the through holes, that is, the axial position limitation of the rotating part is achieved by using the through holes.

[0078] 2. The cross section of one quarter of the outer edge of the second part of the rotating part is an arc, and the distance from the outer edge of this part to the central axis of the rotating part changes from small to large. The cross section of the other three quarters of the outer edge is a circle, and the distance to the central axis of the rotating part remains unchanged.

[0079] During the disassembly process, the rotation angle of the rotating part is no more than 90 degrees, thereby realizing the change of the distance between the other ends of the two rotating arms.

Claims

1. An ion source interface disassembly device, characterized in that: The ion source interface disassembly device comprises: An accommodating portion and a rotating member, wherein the rotating member has different rotation radii at the outer edge thereof, and the rotating member is disposed in the accommodating portion; A limiting unit, the limiting unit is used to limit the movement of the rotating member in the axial direction; A force applying member, wherein the force applying member is arranged on the rotating member; Rotating arms and resistance members, the centers of at least two rotating arms are arranged on the accommodating portion through a rotating shaft, one end of the rotating arm contacts the outer edge of the rotating member, and the other end has a hook structure suitable for connecting to the ion source interface, and the resistance member is used to hinder the rotation of the rotating arm.

2. The ion source interface disassembly device according to claim 1, characterized in that: The limiting unit comprises: The cylindrical portion is fixed on the accommodating portion, and part of the rotating member is located inside the cylindrical portion; the cylindrical portion has a through hole, and the force applying member passes through the through hole and is fixed on the rotating member.

3. The ion source interface disassembly device according to claim 2, characterized in that: The through hole is provided in the radial direction of the cylindrical portion and extends along the circumferential direction of the cylindrical portion.

4. The ion source interface disassembly device according to claim 2, characterized in that: The limiting unit also includes: A step is arranged at the inner side of the accommodation portion and is used to block the rotating member.

5. The ion source interface disassembly device according to claim 1, characterized in that: The accommodation portion has a plurality of protrusions inside, and the outer edge of the rotating member contacts the protrusions.

6. The ion source interface disassembly device according to claim 1, characterized in that: The ion source interface disassembly device also includes: A gripper is fixed on the limiting unit.

7. The ion source interface disassembly device according to claim 1, characterized in that: The force applying member is a wrench and extends along the radial direction of the rotating member.

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