Inductively coupled plasma mass spectrometer sampling device

Abstract

The utility model discloses a sampling device of an inductively coupled plasma mass spectrometer, which belongs to the technical field of sampling devices, aims at solving the problems that a plurality of samples are inconvenient to detect and test tubes are inconvenient to fix, and comprises a sampling device body of the inductively coupled plasma mass spectrometer and a placing disc, a workbench is arranged on one side of an inductively coupled plasma mass spectrometer sampling device body, a feeding port is formed in one side of the top end of the workbench, a driving motor is fixed to the bottom end of one side of the inductively coupled plasma mass spectrometer sampling device body, a rotating rod is fixed to the driving end of the driving motor, and a rotating disc is fixed to the top end of the rotating rod; according to the test tube fixing device, the movable grooves, the extrusion springs, the sliding plates, the arc-shaped clamping pieces and the buffer pads are matched to work, so that a test tube can be fixed when being placed, and the situation that when a sample body on the inner wall of the test tube is detected, the test tube deviates due to the fact that the test tube is stressed, and then detection fails is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sample injection devices, and in particular relates to a sample injection device for an inductively coupled plasma mass spectrometer. Background Art

[0002] An instrument for determining ultra-trace elements and isotope ratios. It consists of a plasma generator, atomization chamber, torch, quadrupole mass spectrometer and a fast-channel electron multiplier tube (called an ion detector or collector). Its working principle is: the atomizer sends the solution sample into the plasma light source, vaporizes at high temperature, dissociates the ionized gas, and the ions collected by the copper or nickel sampling cone form a molecular beam under a low vacuum pressure of about 133.322 Pa, and then enter the quadrupole mass spectrometer through a 1-2 mm diameter interceptor plate. After mass separation by the mass filter, it reaches the ion detector. According to the proportional relationship between the detector count and concentration, the element content or isotope ratio can be measured.

[0003] The existing inductively coupled plasma mass spectrometer has inconveniences when injecting samples. The manual injection efficiency is low, and it is chaotic and easy to make mistakes when testing a large number of samples. The tests cannot be carried out in an orderly manner. When placing test tubes of multiple samples for testing, an existing inductively coupled plasma mass spectrometer injection device is not convenient for fixing the test tubes, which causes the test tubes to tip over during testing, thereby causing the test samples to fail to be tested.

[0004] Therefore, there is a need for an inductively coupled plasma mass spectrometer sample introduction device to solve the problems in the prior art of being inconvenient to test multiple samples and inconvenient to fix the test tube. Utility Model Content

[0005] The utility model aims to provide a sample injection device for an inductively coupled plasma mass spectrometer to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inductively coupled plasma mass spectrometer sample injection device, comprising an inductively coupled plasma mass spectrometer sample injection device body and a placement plate, a workbench is arranged on one side of the inductively coupled plasma mass spectrometer sample injection device body, a feed port is arranged on one side of the top of the workbench, a driving motor is fixed to the bottom end of one side of the inductively coupled plasma mass spectrometer sample injection device body, a rotating rod is fixed to the driving end of the driving motor, a rotating disk is fixed to the top of the rotating rod, and a rotating mechanism is arranged at the bottom end of the placement plate;

[0007] A plurality of brackets are fixed on the top of the placement plate, a guard ring is commonly fixed on the top of the brackets, and a clamping mechanism is arranged on the inner wall of the guard ring.

[0008] It should be noted that the rotating mechanism includes a rotating member, which is fixed at the bottom center of the placement plate, and a plurality of sliding grooves are provided at the four corners of the rotating member;

[0009] The rotating mechanism also includes a limiting sliding rod, and the limiting sliding rod is fixed to the outer side of the top end of the rotating disk.

[0010] It is further worth noting that the limiting sliding rod is slidably mounted on the inner wall of the sliding groove.

[0011] It should be further explained that the clamping mechanism includes a movable groove, which is rectangularly distributed and opened on the inner wall of the guard ring. The inner wall of the movable groove is provided with a compression spring, a sliding plate is fixed to one end of the compression spring, and an arc-shaped clamping piece is fixed to the other end of the sliding plate.

[0012] As a preferred embodiment, a buffer pad is provided in the middle of the plurality of brackets, and the buffer pad is fixed to the top end of the placement plate.

[0013] As a preferred implementation, a limiting disk is fixed on the top of the rotating disk.

[0014] As a preferred embodiment, a mounting rod is fixed at the center of the bottom end of the rotating member, and the mounting rod is rotatably mounted on a side surface of the workbench.

[0015] Compared with the prior art, the sample injection device for an inductively coupled plasma mass spectrometer provided by the utility model has at least the following beneficial effects:

[0016] (1) Through the cooperation between the movable groove, the extrusion spring, the sliding plate, the arc-shaped clamping member, and the buffer pad, the test tube can be fixed when placed, thereby avoiding the test tube being offset due to the force applied to the test tube when the sample on the inner wall of the test tube is tested, thereby causing the test failure.

[0017] (2) Through the cooperation among the rotating part, the sliding groove, the limit slide rod, the limit plate, the rotating rod, and the driving motor, the placement plate can be driven to rotate indirectly, and the test tubes on the surface of the placement plate can be further rotated indirectly, so that multiple test tubes can be automatically detected, thereby improving the practicality of the sampling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front perspective view of the utility model;

[0019] Figure 2 It is a partial structural diagram of the utility model;

[0020] Figure 3 This is a rotation structure diagram of the utility model;

[0021] Figure 4 It is a cross-sectional view of the guard ring of the utility model;

[0022] Figure 5 It is a bottom-up stereogram of the present invention.

[0023] In the figure: 1. a body of an inductively coupled plasma mass spectrometer sampling device; 2. a workbench; 3. a feed port; 4. a driving motor; 5. a rotating rod; 6. a rotating disk; 7. a placing disk; 8. a rotating mechanism; 81. a rotating member; 82. a sliding groove; 83. a limiting sliding rod; 9. a limiting disk; 10. a mounting rod; 11. a bracket; 12. a guard ring; 13. a clamping mechanism; 131. a movable groove; 132. a squeezing spring; 133. a sliding plate; 134. an arc-shaped clamping member; 14. a buffer pad. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with embodiments.

[0025] See also Figure 1-5 The utility model provides an inductively coupled plasma mass spectrometer sampling device, including an inductively coupled plasma mass spectrometer sampling device body 1 and a placement plate 7, a workbench 2 is arranged on one side of the inductively coupled plasma mass spectrometer sampling device body 1, a feeding port 3 is arranged on one side of the top of the workbench 2, a driving motor 4 is fixed to the bottom end of one side of the inductively coupled plasma mass spectrometer sampling device body 1, a rotating rod 5 is fixed to the driving end of the driving motor 4, a rotating plate 6 is fixed to the top of the rotating rod 5, and a rotating mechanism 8 is arranged at the bottom end of the placement plate 7;

[0026] A plurality of brackets 11 are fixed to the top of the placement tray 7 , a guard ring 12 is commonly fixed to the top of the brackets 11 , and a clamping mechanism 13 is provided on the inner wall of the guard ring 12 .

[0027] First, place the test tube on the inner wall of the protective ring 12, and then fix the test tube by squeezing the spring 132, so that it can remain stable during sample injection testing. At the same time, start the driving motor 4 to drive the rotating rod 5 to rotate, and then drive the test tube to rotate indirectly through the rotating mechanism 8.

[0028] Further as Figure 2 , Figure 3 As shown, it is worth to explain in detail that the rotating mechanism 8 includes a rotating member 81, the rotating member 81 is fixed at the bottom center of the placement plate 7, and a plurality of sliding grooves 82 are provided at the four corners of the rotating member 81;

[0029] The rotating mechanism 8 further includes a limiting sliding rod 83 , which is fixed to the outer side of the top end of the rotating disk 6 .

[0030] By rotating the rotating disk 6, the limiting slide bar 83 can be driven to rotate, and then slide to the inner wall of the sliding groove 82, so that it can drive the rotating member 81 to rotate through force, and then drive the placement disk 7 to rotate, and further drive the test tube on the surface of the placement disk 7 to rotate, so that the test tube can be indirectly rotated, and at the same time, the test tube can be aligned with the feed port 3, so that automatic collection and sampling can be realized.

[0031] Further as Figure 3 As shown, it is worth to explain in detail that the limiting sliding rod 83 is slidably installed on the inner wall of the sliding groove 82.

[0032] The limiting slide bar 83 can mainly slide to the inner wall of the sliding groove 82, and then drive the rotating member 81 to rotate, thereby driving the test tube to rotate indirectly, so as to realize automatic sampling.

[0033] This solution has the following working process: first, the collected test tube is placed on the inner wall of the guard ring 12, and at the same time, a clamping mechanism 13 is set on the inner wall of the guard ring 12, so that it can drive the arc-shaped clamping member 134 to be stressed, and then drive the sliding plate 133 to be stressed, and further squeeze the extrusion spring 132 to be stressed, and then through the action of the extrusion spring 132, it can drive the arc-shaped clamping member 134 to be stressed, and then the test tube can be clamped and fixed, so that the test tube remains stable, thereby keeping the test tube stable during detection. And by starting the driving motor 4, it can drive the rotating rod 5 to rotate, and then drive the rotating disk 6 to rotate, and further drive the limiting slide bar 83 to slide in a limited manner, so that the limiting slide bar 83 can slide to the inner wall of the sliding groove 82, and then drive the rotating member 81 to rotate, thereby driving the placement disk 7 to rotate indirectly, and further drive the placement disk 7 to rotate in a limited manner, thereby driving the test tube to rotate indirectly, and then the sample on the inner wall of the test tube can be automatically detected.

[0034] According to the above working process, it can be known that: through the cooperation of the clamping mechanism 13, the test tube can be fixed, so as to avoid the test tube being unstable after being placed, which may lead to the failure of detecting the sample on the inner wall of the test tube. At the same time, through the rotating mechanism 8, it can drive the test tube to rotate indirectly, so as to achieve better detection.

[0035] Further as Figure 2 , Figure 4As shown, it is worth explaining in detail that the clamping mechanism 13 includes a movable groove 131, which is rectangularly distributed and opened on the inner wall of the guard ring 12, and the inner wall of the movable groove 131 is provided with a compression spring 132, a sliding plate 133 is fixed to one end of the compression spring 132, and an arc-shaped clamping member 134 is fixed to the other end of the sliding plate 133.

[0036] The spring 132 is squeezed to drive the sliding plate 133 to slide in a limited position, thereby driving the arc-shaped clamping member 134 to slide under force, thereby clamping the test tube.

[0037] Further as Figure 3 , Figure 4 As shown, it is worth explaining in detail that a buffer pad 14 is provided in the middle of the plurality of brackets 11 , and the buffer pad 14 is fixed to the top end of the placement tray 7 .

[0038] The buffer pad 14 can mainly further protect the test tube.

[0039] Further as Figure 2 , Figure 3 As shown, it is worth explaining in detail that a limiting disk 9 is fixed on the top end of the rotating disk 6.

[0040] Further as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, it is worth to explain in detail that a mounting rod 10 is fixed at the center of the bottom end of the rotating member 81 , and the mounting rod 10 is rotatably mounted on a side surface of the workbench 2 .

[0041] The rotating member 81 can mainly perform limited sliding through the limited sliding rod 83 and the sliding groove 82, so as to drive the rotating member 81 to perform limited rotation, thereby realizing indirect rotation of the test tube.

[0042] In summary: the clamping mechanism 13 can clamp and fix the test tube, thereby preventing the test tube from shifting during detection, which would lead to detection failure. At the same time, the rotating mechanism 8 can drive the test tube to rotate indirectly, thereby achieving better detection of the test tube.

[0043] The drive motor 4 can be purchased on the market. The drive motor 4 is equipped with a power supply, which is a mature technology in this field and has been fully disclosed, so it will not be repeated in the specification.

Claims

1. An inductively coupled plasma mass spectrometer sample injection device, comprising an inductively coupled plasma mass spectrometer sample injection device body (1) and a placement plate (7), characterized in that: A workbench (2) is provided on one side of the body (1) of the inductively coupled plasma mass spectrometer sample injection device, a feed port (3) is provided on one side of the top of the workbench (2), a driving motor (4) is fixed to the bottom of one side of the body (1) of the inductively coupled plasma mass spectrometer sample injection device, a rotating rod (5) is fixed to the driving end of the driving motor (4), a rotating disk (6) is fixed to the top of the rotating rod (5), and a rotating mechanism (8) is provided at the bottom of the placement disk (7); A plurality of brackets (11) are fixed to the top of the placement plate (7), a guard ring (12) is commonly fixed to the top of the brackets (11), and a clamping mechanism (13) is provided on the inner wall of the guard ring (12).

2. The sample injection device for inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The rotating mechanism (8) comprises a rotating member (81), the rotating member (81) is fixed at the bottom center of the placement plate (7), and a plurality of sliding grooves (82) are provided at four corners of the rotating member (81); The rotating mechanism (8) further comprises a limiting sliding rod (83), and the limiting sliding rod (83) is fixed to the outer side of the top end of the rotating disk (6).

3. The sample injection device for inductively coupled plasma mass spectrometer according to claim 2, characterized in that: The limiting sliding rod (83) is slidably mounted on the inner wall of the sliding groove (82).

4. The sample injection device for inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The clamping mechanism (13) comprises a movable groove (131) which is arranged in a rectangular shape on the inner wall of the guard ring (12); a pressing spring (132) is arranged on the inner wall of the movable groove (131); a sliding plate (133) is fixed to one end of the pressing spring (132); and an arc-shaped clamping member (134) is fixed to the other end of the sliding plate (133).

5. The sample injection device for inductively coupled plasma mass spectrometer according to claim 1, characterized in that: A buffer pad (14) is provided in the middle of the plurality of brackets (11), and the buffer pad (14) is fixed to the top end of the placement plate (7).

6. The sample injection device for inductively coupled plasma mass spectrometer according to claim 1, characterized in that: A limiting disk (9) is fixed on the top end of the rotating disk (6).

7. The sample injection device for inductively coupled plasma mass spectrometer according to claim 2, characterized in that: A mounting rod (10) is fixed at the center of the bottom end of the rotating member (81), and the mounting rod (10) is rotatably mounted on a side surface of the workbench (2).

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