An assembly device for tilting quadrupole

Abstract

The present invention discloses an assembly device for a tilted quadrupole, comprising: a base; a first positioning seat, which is mounted on the base; a second positioning seat, which is mounted on the base, and the second positioning seat is arranged opposite to the first positioning seat; and a pole unit, comprising: at least one pole, the pole being arranged between the first positioning seat and the second positioning seat; wherein a first positioning portion is provided on the inner wall of the first positioning seat, and at least one first positioning groove is provided on the first positioning portion; a second positioning portion is provided on the inner wall of the second positioning seat, and at least one second positioning groove is provided on the second positioning portion. According to the present invention, its structure is simple, easy to operate, and can accurately assemble a tilted quadrupole to meet the precision requirements of quadrupoles for ion transmission, filling the gap in the production and assembly of tilted quadrupoles, and has broad market application value.

Description

Technical Field

[0001] The present invention relates to the technical field of mass analysis instruments, and more particularly to an assembly device for tilting quadrupole rods. Background Art

[0002] Mass spectrometers are widely used in scientific research, environmental protection, food hygiene, and national security. The principle of a mass spectrometer is to first ionize the sample to be tested into ions using an ion source. The ion beam enters a vacuum chamber through an interface, followed by ion guidance, collision fragmentation, and ion mass analysis. Finally, the ions enter an electron multiplier, which outputs an electrical signal that is used to determine the composition of the sample to be tested. The quadrupole electrode system, consisting of four rods with hyperbolic or circular cross-sections, is a key component of the ion optical system in a mass spectrometer. A quadrupole mass analyzer requires the rods to be arranged parallel to the axis, while the quadrupole rods used as ion guides are generally arranged parallel or tilted, depending on the actual application scenario.

[0003] Patent CN110767526A proposes a tilted multipole ion guidance system. By tilting at least one of the rods in the multipole system, ion transmission efficiency can be significantly improved and noise can be reduced. As discussed above, tilted quadrupoles are a key technology in mass spectrometry, but their assembly remains a relatively unexplored area.

[0004] In view of this, it is necessary to develop an assembly device for tilting quadrupoles to solve the above problems. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the main purpose of the present invention is to provide an assembly device for tilted quadrupoles, which has a simple structure, is easy to operate, and can accurately assemble tilted quadrupoles to meet the precision requirements of quadrupoles for ion transmission, filling the gap in the production and assembly of tilted quadrupoles and having broad market application value.

[0006] To achieve these objects and other advantages according to the present invention, there is provided an assembly apparatus for tilting a quadrupole, comprising: a base;

[0007] A first positioning seat, which is installed on the base;

[0008] a second positioning seat, which is mounted on the base, and the second positioning seat is arranged opposite to the first positioning seat; and

[0009] A pole unit, comprising: at least one pole, the pole being arranged between the first positioning seat and the second positioning seat;

[0010] Wherein, a first positioning portion is provided on the inner wall of the first positioning seat, and at least one first positioning groove is provided on the first positioning portion;

[0011] A second positioning portion is provided on the inner wall of the second positioning seat, and at least one second positioning groove is formed on the second positioning portion;

[0012] Both ends of each pole are respectively installed in a corresponding first positioning groove and a corresponding second positioning groove, and each first positioning groove is staggered with a corresponding second positioning groove.

[0013] Preferably, the widths of the first positioning groove and the second positioning groove are both the same as the outer diameter of the pole.

[0014] Preferably, a first positioning surface is provided on an inner side of the first positioning groove, a second positioning surface is provided on an inner side of the second positioning groove, and the first positioning surface and the second positioning surface are staggered.

[0015] Preferably, the poles, the first positioning grooves and the second positioning grooves are all arranged in an array along an array direction;

[0016] The array direction is any one of a straight line, a curve or a ring.

[0017] Preferably, at least one first screw hole is formed in a circumferential area of ​​the first positioning portion, each first screw hole is connected to a corresponding first positioning groove, and a first fastener is arranged in the first screw hole.

[0018] Preferably, at least one second screw hole is formed in the circumferential area of ​​the second positioning portion, each second screw hole is connected to a corresponding second positioning groove, and a second fastener is arranged in the second screw hole.

[0019] Preferably, the pole unit further comprises: a fixing member, the interior of which is hollow to form a placement cavity, and the pole is arranged in the placement cavity; and

[0020] At least one third fastener passes through the fixing member and is fixedly connected to the pole.

[0021] Preferably, the device further comprises: at least two positioning rings, each of the positioning rings being sleeved on the outer periphery of the first positioning portion and the second positioning portion, and the positioning rings being connected to the fixing member.

[0022] Preferably, the positioning ring is provided with through holes, each of the through holes is coaxially arranged with a corresponding first screw hole, and each of the through holes is coaxially arranged with a corresponding second screw hole.

[0023] One of the above technical solutions has the following advantages or beneficial effects: the present invention has a simple structure, is easy to operate, and can accurately assemble tilted quadrupoles to meet the precision requirements of quadrupoles for ion transmission, filling the gap in the production and assembly of tilted quadrupoles and having broad market application value.

[0024] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0026] Figure 1 A three-dimensional structural view of an assembly device for tilted quadrupoles according to one embodiment of the present invention;

[0027] Figure 2 An exploded structural view of an assembly device for tilted quadrupoles according to one embodiment of the present invention;

[0028] Figure 3 A three-dimensional structural view from another perspective of an assembly device for tilted quadrupoles according to one embodiment of the present invention;

[0029] Figure 4 FIG. 1 is a cross-sectional view of an assembly device for tilted quadrupoles according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like components.

[0032] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] In the following description, words such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined relative to the structure shown in the drawings. In particular, "height" is equivalent to the dimension from top to bottom, "width" is equivalent to the dimension from left to right, and "depth" is equivalent to the dimension from front to back. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other directions should not be interpreted as restrictive terms.

[0034] Terms related to attachment, coupling, and the like (eg, "connected" and "attached") refer to relationships in which structures are directly or indirectly fixed or attached to one another through intermediate structures, as well as movable or rigid attachments, unless expressly stated otherwise.

[0035] According to one embodiment of the present invention, Figures 1 to 4 As shown in FIG. 1 , it can be seen that the assembly device 100 for tilting the quadrupole includes: a base 110;

[0036] A first positioning seat 120 , which is installed on the base 110 ;

[0037] a second positioning seat 130 , which is mounted on the base 110 , and the second positioning seat 130 is arranged opposite to the first positioning seat 120 ; and

[0038] The rod unit 140 includes: at least one rod 141 , wherein the rod 141 is arranged between the first positioning seat 120 and the second positioning seat 130 ;

[0039] A first positioning portion 121 is provided on the inner wall of the first positioning seat 120 , and at least one first positioning groove 1211 is formed on the first positioning portion 121 ;

[0040] A second positioning portion 131 is provided on the inner wall of the second positioning seat 130 , and at least one second positioning groove 1311 is formed on the second positioning portion 131 ;

[0041] Both ends of each pole 141 are respectively installed in a corresponding first positioning groove 1211 and a corresponding second positioning groove 1311 , and each first positioning groove 1211 is staggered with a corresponding second positioning groove 1311 .

[0042] It can be understood that the present invention installs the two ends of each pole 141 in the corresponding first positioning groove 1211 and the second positioning groove 1311 respectively, and at the same time each first positioning groove 1211 and the corresponding second positioning groove 1311 are staggered so that each pole 141 is arranged tilted, thereby forming an inclined multipole, and the inclined quadrupole can be accurately assembled to meet the precision requirements of the quadrupole for ion transmission, filling the gap in the production and assembly of the inclined quadrupole.

[0043] In a preferred embodiment, the base 110 is made of marble.

[0044] Furthermore, the widths of the first positioning groove 1211 and the second positioning groove 1311 are the same as the outer diameter of the pole 141, so that the first positioning groove 1211 and the second positioning groove 1311 can preliminarily position the pole 141, prevent the pole from moving randomly, and facilitate the assembly of the pole.

[0045] Furthermore, a first positioning surface 12111 is provided on the inner side of the first positioning groove 1211, and a second positioning surface 13111 is provided on the inner side of the second positioning groove 1311. The first positioning surface 12111 and the second positioning surface 13111 are staggered.

[0046] In a preferred embodiment, the distance between the two first positioning surfaces 12111 arranged in the longitudinal direction is smaller than the distance between the two first positioning surfaces 12111 arranged in the transverse direction.

[0047] The distance between the two second positioning surfaces 13111 arranged in the longitudinal direction is greater than the distance between the two second positioning surfaces 13111 arranged in the transverse direction.

[0048] Furthermore, the poles 141, the first positioning grooves 1211 and the second positioning grooves 1311 are all arranged in an array along an array direction;

[0049] The array direction is any one of a straight line, a curve or a ring.

[0050] Specifically, for example, the array direction is linear, for example, the array direction is curved, and for example, the array direction is circular.

[0051] The specific setting of the array direction can be selected by the staff according to the actual situation, and the present invention does not make any specific limitation.

[0052] Furthermore, at least one first screw hole 1212 is defined in the circumferential region of the first positioning portion 121 . Each first screw hole 1212 is connected to a corresponding first positioning groove 1211 , and a first fastener 150 is disposed in the first screw hole 1212 .

[0053] It can be understood that the present invention arranges the first fastener 150 in the first threaded hole 1212 to further align the pole 141 through the cooperation between the first fastener 150 and the pole, thereby preventing the pole from moving freely and facilitating the assembly of the pole.

[0054] Furthermore, at least one second screw hole 1312 is defined in the circumferential region of the second positioning portion 131 . Each second screw hole 1312 is connected to a corresponding second positioning groove 1311 , and a second fastener 160 is disposed in the second screw hole 1312 .

[0055] It can be understood that the present invention arranges the second fastener 160 in the second threaded hole 1312 to further align the second fastener 160 with the pole 141 to prevent the pole from moving freely and facilitate assembly of the pole.

[0056] Furthermore, the pole unit 140 further includes: a fixing member 142 , the interior of which is hollow to form a placement cavity 1421 , and the pole 141 is arranged in the placement cavity 1421 ; and

[0057] At least one third fastener 143 , the third fastener 143 passes through the fixing member 142 and is fixedly connected to the pole 141 .

[0058] It can be understood that in the present invention, each pole 141 is placed in the fixing member 142, and is further aligned by the cooperation of the third fastener 143 with the pole 141 to prevent the pole from moving randomly and facilitate the assembly of the pole.

[0059] In a preferred embodiment of the present invention, the fixing member 142 is made of ceramic.

[0060] After the pole 141 is fixed, epoxy resin glue can be used to fill the space between the connecting column and the ceramic tube. After curing, all external components can be removed from both ends to complete the assembly of the tilted quadrupole.

[0061] Furthermore, the system further includes at least two positioning rings 170 , each of the positioning rings 170 being sleeved on the outer periphery of the first positioning portion 121 and the second positioning portion 131 , and the positioning rings 170 being connected to the fixing member 142 .

[0062] Furthermore, the positioning ring 170 is provided with through holes 171 , each of the through holes 171 is coaxially arranged with a corresponding first screw hole 1212 , and each of the through holes 171 is coaxially arranged with a corresponding second screw hole 1312 .

[0063] In a preferred embodiment of the present invention, the positioning ring 170 is made of ceramic.

[0064] The number of devices and processing scales described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the present invention will be readily apparent to those skilled in the art.

[0065] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Further modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims

1. An assembly device for tilting quadrupoles, characterized in that: include: abutment(110); A first positioning seat (120) is mounted on the base (110); a second positioning seat (130) mounted on the base (110), wherein the second positioning seat (130) is arranged opposite to the first positioning seat (120); as well as A pole unit (140) comprising: at least one pole (141), the pole (141) being arranged between the first positioning seat (120) and the second positioning seat (130); A first positioning portion (121) is provided on the inner wall of the first positioning seat (120), and at least one first positioning groove (1211) is provided on the first positioning portion (121); At least one first threaded hole (1212) is provided in a circumferential area of ​​the first positioning portion (121), each first threaded hole (1212) is connected to a corresponding first positioning groove (1211), and a first fastener (150) is arranged in the first threaded hole (1212); A second positioning portion (131) is provided on the inner wall of the second positioning seat (130), and at least one second positioning groove (1311) is provided on the second positioning portion (131); At least one second threaded hole (1312) is provided in a circumferential area of ​​the second positioning portion (131), each second threaded hole (1312) is connected to a corresponding second positioning groove (1311), and a second fastener (160) is arranged in the second threaded hole (1312); The first and second ends of each pole (141) are respectively installed in a corresponding first positioning groove (1211) and a corresponding second positioning groove (1311), and each first positioning groove (1211) and a corresponding second positioning groove (1311) are arranged in a staggered manner; The pole unit (140) further includes: a fixing member (142), the interior of which is hollow to form a placement cavity (1421), and the pole (141) is arranged in the placement cavity (1421); and at least one third fastener (143), the third fastener (143) passing through the fixing member (142) and fixedly connected to the pole (141); At least two positioning rings (170), each positioning ring (170) is respectively sleeved on the outer periphery of the first positioning portion (121) and the second positioning portion (131), and the positioning ring (170) is connected to the fixing member (142).

2. The assembly device for tilted quadrupole according to claim 1, wherein: The widths of the first positioning groove (1211) and the second positioning groove (1311) are both the same as the outer diameter of the pole (141).

3. The assembly device for tilted quadrupole according to claim 1, wherein: A first positioning surface (12111) is provided on the inner side of the first positioning groove (1211), and a second positioning surface (13111) is provided on the inner side of the second positioning groove (1311), and the first positioning surface (12111) and the second positioning surface (13111) are arranged in a staggered manner.

4. The assembly device for tilted quadrupole according to claim 1, wherein: The poles (141), the first positioning grooves (1211), and the second positioning grooves (1311) are all arranged in an array along an array direction; The array direction is any one of a straight line, a curve or a ring.

5. The assembly device for tilted quadrupole according to claim 1, wherein: The positioning ring (170) is provided with through holes (171), each of the through holes (171) is coaxially arranged with a corresponding first threaded hole (1212), and each of the through holes (171) is coaxially arranged with a corresponding second threaded hole (1312).

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