Sample injection tube fixing support capable of being used on plasma mass spectrometer

Abstract

The utility model discloses a sample introduction tube fixing support used on a plasma mass spectrometer, and relates to the technical field of sample introduction tube clamping, the fixing support comprises a base and two supporting rods which are symmetrically and fixedly arranged on the base, one end of any supporting rod far away from the base is hinged with an arc-shaped clamping plate, and the arc-shaped clamping plate is fixed on the base. The two arc-shaped clamping plates can form a circular ring structure; the ends, close to the base, of the two arc-shaped clamping plates are hinged to each other, and the ends, away from the base, of the two arc-shaped clamping plates are detachably connected through a clamping structure. And any arc-shaped clamping plate is provided with a fine adjustment mechanism. The fine adjustment mechanisms are mounted on the two arc-shaped clamping plates capable of forming a complete circular ring structure, so that after a sample injection pipe with the diameter smaller than the inner diameter of the circular ring structure formed by the two arc-shaped clamping plates is placed between the two arc-shaped clamping plates, the two fine adjustment mechanisms can fix the sample injection pipe in the two arc-shaped clamping plates; therefore, the fixing bracket can be adapted to sample injection pipes with different diameters in a certain size range.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sample introduction tube clamping, in particular to a sample introduction tube fixing support for plasma mass spectrometer. BACKGROUND

[0002] The plasma mass spectrometer is mainly composed of an instrument, a component analyzer and a mass spectrometer, and has the characteristics of rapidness, accuracy and good stability, and is mainly used for analyzing trace elements, rare earth elements and heavy metal elements in the fields of medicine, environmental protection, food, biology and metallurgy.

[0003] The existing sample introduction tube fixing support for plasma mass spectrometer is inconvenient to fine tune the fixed sample introduction tube to adapt to sample introduction tubes of different diameters within a certain size range, has poor adaptability to the working environment, and the sample introduction tube is prone to loosening after long-term use, thereby affecting the stability of the sample introduction work.

[0004] Therefore, the sample introduction tube fixing support for plasma mass spectrometer is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of the prior art and providing a sample introduction tube fixing support for plasma mass spectrometer.

[0006] The utility model aims at overcoming the defects of the prior art and providing a sample introduction tube fixing support for plasma mass spectrometer.

[0007] The utility model discloses a sample introduction tube fixing support for plasma mass spectrometer, which comprises a base and two support rods symmetrically and fixedly arranged on the base, and the end of any support rod away from the base is hingedly connected with an arc-shaped clamping plate, and the two arc-shaped clamping plates can form a circular ring structure.

[0008] Further, in the utility model, any micro-adjusting mechanism comprises an adjusting bolt threadedly connected with the corresponding arc-shaped clamping plate, a guide rod penetrating through the corresponding arc-shaped clamping plate and an arc-shaped plate located between the two arc-shaped clamping plates, the centers of the two arc-shaped plates are located between the two arc-shaped clamping plates, the end of the adjusting bolt between the two arc-shaped clamping plates is rotationally connected with the arc-shaped plate, and the end of the guide rod between the two arc-shaped clamping plates is connected with the arc-shaped plate.

[0009] Further, in the utility model, the end of one of the arc clamping plates is provided with a first clamping box with an opening, a second clamping box with an opening is arranged in the first clamping box, the openings of the first clamping box and the second clamping box all face the end of the other arc clamping plate away from the base, and a spacing exists between the outer side wall of the second clamping box and the inner side wall of the first clamping box.

[0010] Further, in the utility model, the end of one of the arc clamping plates is provided with a first clamping box with an opening, a second clamping box with an opening is arranged in the first clamping box, the openings of the first clamping box and the second clamping box all face the end of the other arc clamping plate away from the base, and a spacing exists between the outer side wall of the second clamping box and the inner side wall of the first clamping box.

[0011] Further, in the utility model, the end of one of the arc clamping plates is provided with a first clamping box with an opening, a second clamping box with an opening is arranged in the first clamping box, the openings of the first clamping box and the second clamping box all face the end of the other arc clamping plate away from the base, and a spacing exists between the outer side wall of the second clamping box and the inner side wall of the first clamping box.

[0012] Further, in the utility model, the end of one of the arc clamping plates is provided with a first clamping box with an opening, a second clamping box with an opening is arranged in the first clamping box, the openings of the first clamping box and the second clamping box all face the end of the other arc clamping plate away from the base, and a spacing exists between the outer side wall of the second clamping box and the inner side wall of the first clamping box.

[0013] The utility model discloses the beneficial effects are:

[0014] 1, by installing the fine adjustment mechanism on two arc clamping plates that can constitute a complete annular structure, when the sampling tube with the diameter less than the inner diameter of the annular structure formed by two arc clamping plates is placed between two arc clamping plates, two fine adjustment mechanisms can fix the sampling tube in two arc clamping plates, so that the fixed support can adapt to the sampling tube with different diameters in a certain size range.

[0015] 2, the end of two arc clamping plates away from the base is detachably connected through the clamping structure, and the rapid connection of the two is facilitated. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the structural schematic drawing of the utility model embodiment;

[0017] Figure 2 for Figure 1 A sectional view;

[0018] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the locking structure according to an embodiment of the present invention.

[0020] In the diagram: 101-base; 201-support rod; 301-arc clamping plate; 401-adjusting bolt; 402-guide rod; 403-arc plate; 501-clamping block; 601-first clamping box; 701-second clamping box; 801-clamping plate; 901-push plate; 902-telescopic rod; 903-spring. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Please see Figures 1-4 This utility model provides a technical solution:

[0023] A sample tube holder for use in a plasma mass spectrometer includes a base 101 that is mounted on the spectrometer during use. Two support rods 201 are symmetrically mounted on the base 101, with the bottom ends of both support rods 201 fixedly connected to the base 101. An arc-shaped clamping plate 301 is hinged to the top of each support rod 201, and the two ends of the arc-shaped clamping plates 301 abut against each other to form a complete circular structure. The bottom ends of the two arc-shaped clamping plates 301 are hinged together, and the top ends of the two arc-shaped clamping plates 301 are connected by a snap-fit ​​structure. Thus, when the sample tube is placed between the two arc-shaped clamping plates 301, the top ends of the two arc-shaped clamping plates 301 are connected together by the snap-fit ​​structure, thereby clamping the sample tube.

[0024] However, the above structure still has a problem: if the diameter of the injection tube is smaller than the inner diameter of the annular structure formed by the two arc-shaped clamping plates 301, this mechanism cannot stably clamp the injection tube. Therefore, in order to solve this problem, a fine-tuning mechanism is also installed on the arbitrary arc-shaped clamping plate 301.

[0025] Specifically, refer to Figure 1 and Figure 2Any fine-tuning mechanism in the embodiment includes an adjusting bolt 401 threaded with a corresponding arc-shaped clamping plate 301, a guide rod 402 passing through the corresponding arc-shaped clamping plate 301, and an arc-shaped plate 403 located between the two arc-shaped clamping plates 301. The centers of the two arc-shaped plates 403 are located between the two arc-shaped plates 403. The end of the adjusting bolt 401 located between the two arc-shaped clamping plates 301 is rotationally connected with the arc-shaped plate 403. The end of the guide rod 402 located between the two arc-shaped clamping plates 301 is connected with the arc-shaped plate 403. In this way, when the sample tube with a diameter smaller than the inner diameter of the circular ring structure composed of the two arc-shaped clamping plates 301 is placed between the two arc-shaped clamping plates 301, the top ends of the two arc-shaped clamping plates 301 are first connected together, and then the two adjusting bolts 401 are respectively screwed. From the perspective of the sample tube, the left arc-shaped plate 403 moves to the right, and the right arc-shaped plate 403 moves to the left until the two arc-shaped plates 403 abut against the sample tube, so that the sample tube can be fixed in the two arc-shaped clamping plates 301. Figure 2 From the perspective of the sample tube, the left arc-shaped plate 403 moves to the right, and the right arc-shaped plate 403 moves to the left until the two arc-shaped plates 403 abut against the sample tube, so that the sample tube can be fixed in the two arc-shaped clamping plates 301.

[0026] Referring to Figure 1 or Figure 2 The clamping structure in the embodiment includes a clamping block 501 and a clamping lock structure that are adapted to each other. The clamping block 501 is installed at the top end of the right arc-shaped clamping plate 301, and the clamping lock structure is installed at the top end of the left arc-shaped clamping plate 301. After the top ends of the two arc-shaped clamping plates 301 are brought together, the clamping block 501 will be clamped into the clamping lock structure.

[0027] Referring to Figure 1 or Figure 2 Specifically, in order to facilitate the installation of the clamping lock structure, the top end of the left arc-shaped clamping plate 301 in the embodiment is provided with a first clamping box 601 having an opening. The first clamping box 601 is provided with a second clamping box 701 having an opening. The openings of the first clamping box 601 and the second clamping box 701 are both directed to the top end of the right arc-shaped clamping plate 301, and there is a gap between the outer side wall of the second clamping box 701 and the inner side wall of the first clamping box 601.

[0028] Referring to Figure 1 or Figure 2, specifically, two clamping grooves are symmetrically arranged on the clamping block 501 in the embodiment. The clamping structure comprises two clamping plates 801 symmetrically arranged on the second clamping box 701, and the two clamping plates 801 are slidingly connected with the second clamping box 701. The end of any clamping plate 801 away from the other clamping plate 801 extends into the space between the first clamping box 601 and the second clamping box 701, and the end of the two clamping plates 801 located between the first clamping box 601 and the second clamping box 701 is connected through the telescopic mechanism; after the clamping block 501 extends into the second clamping box 701, the two clamping plates 801 are clamped into the two clamping grooves. The telescopic mechanism comprises two push plates 901 and two telescopic rods 902 oppositely arranged on the two sides of the second clamping box 701, the ends of the two push plates 901 are connected through the two telescopic rods 902 respectively, the ends of the two clamping plates 801 located between the first clamping box 601 and the second clamping box 701 are connected with the two push plates 901 respectively, and the side of any push plate 901 away from the corresponding clamping plate 801 is connected with the first clamping box 601 through a spring 903. In order to facilitate the clamping block 501 to be clamped between the two clamping plates 801, the side wall of the second clamping box 701 close to the two clamping plates 801 is provided with a guide inclined surface.

[0029] Referring to Figure 4 In this way, when the clamping block 501 is not clamped between the two clamping plates 801, the two push plates 901 are close to each other under the action of the two sets of springs 903, the two clamping plates 801 are close to each other synchronously, and are in a balanced state. When the clamping block 501 abuts against the guide inclined surfaces of the two clamping plates 801 and continues to move towards the inner bottom of the second clamping box 701, the lower clamping plate 801 moves downward and the upper clamping plate 801 moves upward under the action of the extrusion force, and the two clamping plates 801 are slowly clamped into the two clamping grooves. When it is needed to separate the clamping block 501 from the two clamping plates 801, one of the push plates 901 is moved away from the other push plate 901, and the clamping block 501 can be pulled out.

[0030] The above description is only the preferred embodiment of the present application, and it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein by the above teaching or related technology or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims of the present application.

Claims

1. A sample inlet tube fixing bracket that can be used in a plasma mass spectrometer, characterized in that: The device includes a base (101) and two support rods (201) symmetrically and fixedly mounted on the base (101). An arc-shaped clamping plate (301) is hinged to one end of any support rod (201) away from the base (101). The two arc-shaped clamping plates (301) can form a ring structure. The ends of the two arc-shaped clamping plates (301) near the base (101) are hinged to each other. The ends of the two arc-shaped clamping plates (301) away from the base (101) are detachably connected by a snap-fit ​​structure. A fine-tuning mechanism is provided on any arc-shaped clamping plate (301).

2. The sample tube fixing bracket that can be used in a plasma mass spectrometer according to claim 1, characterized in that: Any of the fine-tuning mechanisms includes an adjusting bolt (401) threadedly connected to the corresponding arc-shaped clamping plate (301), a guide rod (402) passing through the corresponding arc-shaped clamping plate (301), and an arc-shaped plate (403) located between the two arc-shaped clamping plates (301), with the centers of the two arc-shaped plates (403) located between the two arc-shaped plates (403); the end of the adjusting bolt (401) located between the two arc-shaped clamping plates (301) is rotatably connected to the arc-shaped plate (403), and the end of the guide rod (402) located between the two arc-shaped clamping plates (301) is connected to the arc-shaped plate (403).

3. A sample tube fixing bracket for use in a plasma mass spectrometer according to claim 1 or 2, characterized in that: The snap-fit ​​structure includes a snap-fit ​​block (501) and a snap-lock structure that are adapted to each other. The snap-fit ​​block (501) and the snap-lock structure are respectively disposed at the ends of the two arc-shaped clamping plates (301) away from the base (101). After the ends of the two arc-shaped clamping plates (301) away from the base (101) are brought together, the snap-fit ​​block (501) is snapped into the snap-lock structure.

4. A sample tube fixing bracket for use in a plasma mass spectrometer according to claim 3, characterized in that: One of the arc-shaped clamping plates (301) has a first card box (601) with an opening at one end. A second card box (701) with an opening is provided inside the first card box (601). The openings of the first card box (601) and the second card box (701) are both facing the end of the other arc-shaped clamping plate (301) away from the base (101). There is a gap between the outer side wall of the second card box (701) and the inner side wall of the first card box (601). The locking structure is provided inside the second card box (701).

5. A sample tube fixing bracket for use in a plasma mass spectrometer according to claim 4, characterized in that: The card block (501) has two card slots symmetrically arranged on it; the card lock structure includes two card plates (801) symmetrically arranged on the second card box (701), and both card plates (801) are slidably connected to the second card box (701); the end of any card plate (801) away from the other card plate (801) extends into the space between the first card box (601) and the second card box (701), and the ends of the two card plates (801) located between the first card box (601) and the second card box (701) are connected by a telescopic mechanism; after the card block (501) extends into the second card box (701), the two card plates (801) are engaged in the two card slots.

6. A sample tube fixing bracket for use in a plasma mass spectrometer according to claim 5, characterized in that: The telescopic mechanism includes two push plates (901) and two telescopic rods (902) disposed opposite to each other on both sides of the second card box (701). The ends of the two push plates (901) are connected by the two telescopic rods (902). The ends of the two card plates (801) located between the first card box (601) and the second card box (701) are connected to the two push plates (901). The side of any push plate (901) away from the corresponding card plate (801) is connected to the first card box (601) by a spring (903).

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