ICP (inductively coupled plasma) combined hydride generating device

Abstract

The utility model discloses an ICP (Inductively Coupled Plasma) combined hydride generating device which is used on a sampling system of an ICP spectrograph as an auxiliary accessory and can realize the test effect of an atomic fluorescence spectrograph, so that the cost is reduced. The shell is internally provided with a reaction chamber and a confluence pipeline; the cover comprises an upper convex part and a lower convex connecting end, and a through hole is formed in the top of the upper convex part; two adjacent sides of the bottom of the reaction chamber are respectively provided with a group of bypass header pipes; the outer ends of the bypass header pipes penetrate through the corresponding thickness of the shell and then are externally connected with first straight joints; the gas confluence pipeline comprises a confluence header pipe and a plurality of bypass confluence branch pipes, the outer ends of all the confluence branch pipes penetrate through the corresponding thickness positions of the shell and then are communicated with the corresponding straight-through connectors, the inner ends of the confluence branch pipes are communicated to the vertical confluence header pipe, and the top of the confluence header pipe is communicated with the reaction chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of ICP spectrometer supporting equipment, in particular to an ICP-coupled hydride generating device. Background Art

[0002] Traditional ICP spectrometers have poor sensitivity and high detection limits when testing elements such as arsenic, mercury, selenium, lead, tin, and tellurium. These limitations make them inadequate for the stringent control requirements of many industries, such as environmental protection, food, and pharmaceuticals. Existing technology requires a separate atomic fluorescence spectrometer to measure low levels of these elements, resulting in high equipment costs. Utility Model Content

[0003] In view of the above problems, the present invention provides an ICP-coupled hydride generator, which is used as an auxiliary accessory on the sampling system of an ICP spectrometer, can achieve the testing effect of an atomic fluorescence spectrometer, and reduce costs.

[0004] An ICP-coupled hydride generator, characterized in that it comprises:

[0005] The shell has a reaction chamber and a confluence pipe disposed therein;

[0006] and a cover comprising an upper convex portion and a lower convex connecting end, wherein a through hole is provided at the top of the upper convex portion;

[0007] A group of bypass main pipes are respectively provided on two adjacent sides of the bottom of the reaction chamber, and the outer ends of the bypass main pipes pass through the corresponding thickness of the shell and are externally connected to the first straight joint;

[0008] The gas confluence pipeline includes a confluence main pipe and several bypass confluence branches. The outer ends of all the confluence branches respectively penetrate the corresponding thickness positions of the shell and are connected to the corresponding straight-through joints. The inner ends of the confluence branches are respectively connected to the vertical confluence main pipe. The top of the confluence main pipe is connected to the reaction chamber. The bottom of the confluence main pipe is a blind hole. The upper part of the reaction chamber is open. The lower convex connection end cover of the lid is installed on the upper part of the reaction chamber. A pipe joint is provided on the through hole. The pipe joint is used to connect to the sampling system of the ICP spectrometer through a pipeline.

[0009] It is further characterized by:

[0010] The manifolds include three groups of current-carrying manifolds arranged from bottom to top and one group of reducing agent manifolds. The outer end outlets of the three groups of current-carrying manifolds are arranged from bottom to top on one vertical surface of the shell and are arranged below a group of bypass main pipes. The outer ends of the three groups of current-carrying manifolds are respectively fixed with a second straight-through joint, a third straight-through joint, and a fourth straight-through joint. The reducing agent manifold is arranged directly below another group of the bypass main pipes. The outer end of the reducing agent manifold is fixed with a fifth straight-through joint.

[0011] It also includes a partition with a plurality of through holes. The reaction chamber includes a lower reaction chamber and an upper diffusion chamber. A stopper structure is provided between the lower reaction chamber and the upper diffusion chamber. The periphery of the partition is supported by the stopper structure. The lower surface of the lower convex connection end is press-fitted to the upper surface of the corresponding periphery of the partition. After the hydride fluorescence value is obtained through the lower reaction chamber, it is uniformly diffused into the upper diffusion chamber through the through holes on the partition, so that the hydride entering the ICP spectrometer is stable and reliable.

[0012] A first sealing ring is provided between the lower surface of the lower convex connection end and the outer peripheral upper surface of the partition, and a second sealing ring is provided between the upper stop ring surface of the lower convex connection end and the upper ring surface of the shell to ensure reliable sealing.

[0013] After adopting the above technical solution, the sample is introduced into the reaction chamber along the bypass main pipe, and the carrier fluid and reducing agent are respectively introduced into the main pipe through the corresponding branch pipes and then into the reaction chamber. The hydride generator can realize that the sample, carrier fluid and reducing agent enter the reaction chamber of the hydride generator through the pipeline respectively to react, generate hydride fluorescence value, and finally enter the flame of the ICP spectrometer for high-temperature excitation, releasing characteristic spectral lines for qualitative and quantitative analysis; the ICP-coupled hydride generator is used as an auxiliary accessory on the sampling system of the ICP spectrometer, which can achieve the testing effect of the atomic fluorescence spectrometer and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a sectional view of the main view of the present utility model;

[0016] Figure 3 It is a side view and cross-sectional view of the utility model;

[0017] Figure 4 A three-dimensional diagram of the partition of the present utility model;

[0018] The names corresponding to the serial numbers in the figure are as follows:

[0019] Shell 10, bypass main pipe 11, confluence main pipe 12, current-carrying confluence branch pipe 13, reductant confluence branch pipe 14, upper annular surface 15, cover 20, upper convex part 21, lower convex connecting end 22, lower surface 221, upper stop annular surface 222, through hole 23, pipe joint 24, partition 30, through small hole 31, first sealing ring 32, second sealing ring 33, reaction chamber 40, lower reaction chamber 41, upper diffusion chamber 42, stop platform structure 43, first straight joint 50, second straight joint 60, third straight joint 70, fourth straight joint 80, fifth straight joint 90. DETAILED DESCRIPTION

[0020] An ICP-coupled hydride generator, see Figures 1-4 , which includes a housing 10, a cover 20, and a partition 30;

[0021] The housing 10 is provided with a reaction chamber 40 and a confluence pipe. The reaction chamber 40 includes a lower reaction chamber 41 and an upper diffusion chamber 42. A stopper structure 43 is provided between the lower reaction chamber 41 and the upper diffusion chamber 42.

[0022] The cover 20 includes an upper convex portion 21 and a lower convex connection end 22. A through hole 23 is provided at the top of the upper convex portion 21, and a pipe joint 24 is provided on the through hole 23. The pipe joint 24 is used to connect to the sample injection system of the ICP spectrometer through a pipeline.

[0023] The partition 30 is provided with a plurality of through holes 31;

[0024] Bypass main pipes 11 are respectively provided on two adjacent sides of the bottom of the reaction chamber 40. The outer end of each set of bypass main pipes 11 passes through the corresponding thickness of the shell and is externally connected to the first straight joint 50.

[0025] The gas confluence pipeline includes a confluence main pipe 12 and a plurality of bypass confluence branches. The confluence branches include three groups of carrier confluence branches 13 arranged from bottom to top and a group of reducing agent confluence branches 14. The outer end outlets of the three groups of carrier confluence branches 13 are arranged from bottom to top on one vertical surface of the shell and are correspondingly arranged below a group of bypass pipes. The outer ends of the three groups of carrier confluence branches 13 are respectively fixed with a second straight-through joint 60, a third straight-through joint 70, and a fourth straight-through joint 80. The reducing agent confluence branch 14 is arranged directly below another group of bypass main pipes 11. The outer end of the reducing agent confluence branch 14 A fifth straight-through connector 90 is fixedly installed; the inner ends of each group of confluence branches are respectively connected to the vertical confluence main pipe 12. The top of the confluence main pipe 12 is connected to the lower reaction chamber 41 of the reaction chamber 40. The bottom of the confluence main pipe 12 is a blind hole, and the upper part of the upper diffusion chamber 42 is open. The outer periphery of the partition 30 is supported by the stop platform structure 43. The lower surface of the lower convex connection end 22 is press-fitted to the upper surface of the corresponding outer periphery of the partition 30. After the hydride fluorescence value is obtained through the lower reaction chamber 41, it is evenly diffused into the upper diffusion chamber 42 through the through-holes 31 on the partition 30, so that the hydride entering the ICP spectrometer is stable and reliable.

[0026] A first sealing ring 32 is provided between the lower surface 221 of the lower convex connection end 22 and the outer peripheral upper surface of the partition 30, and a second sealing ring 33 is provided between the upper stop ring surface 222 of the lower convex connection end 22 and the upper ring surface 15 of the shell 10 to ensure reliable sealing.

[0027] Its working principle is as follows: the sample is introduced into the reaction chamber along the bypass main pipe, and the carrier fluid and reducing agent are respectively introduced into the main pipe through the corresponding branch pipes and then into the reaction chamber. The hydride generator can realize that the sample, carrier fluid and reducing agent enter the reaction chamber of the hydride generator through the pipeline respectively to react, generate hydride fluorescence value, and finally enter the flame of the ICP spectrometer for high-temperature excitation, releasing characteristic spectral lines for qualitative and quantitative analysis; the ICP-coupled hydride generator is used as an auxiliary accessory on the sampling system of the ICP spectrometer, which can achieve the testing effect of the atomic fluorescence spectrometer and reduce costs.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An ICP-coupled hydride generator, characterized in that: It includes: The shell has a reaction chamber and a confluence pipe disposed therein; and a cover comprising an upper convex portion and a lower convex connecting end, wherein a through hole is provided at the top of the upper convex portion; A group of bypass main pipes are respectively provided on two adjacent sides of the bottom of the reaction chamber, and the outer ends of the bypass main pipes pass through the corresponding thickness of the shell and are externally connected to the first straight joint; The gas confluence pipeline includes a confluence main pipe and several bypass confluence branches. The outer ends of all the confluence branches respectively penetrate the corresponding thickness positions of the shell and are connected to the corresponding straight-through joints. The inner ends of the confluence branches are respectively connected to the vertical confluence main pipe. The top of the confluence main pipe is connected to the reaction chamber. The bottom of the confluence main pipe is a blind hole. The upper part of the reaction chamber is open. The lower convex connection end cover of the lid is installed on the upper part of the reaction chamber. A pipe joint is provided on the through hole. The pipe joint is used to connect to the sampling system of the ICP spectrometer through a pipeline.

2. The ICP-coupled hydride generator according to claim 1, characterized in that: The branch pipes include three groups of current-carrying branch pipes arranged from bottom to top and one group of reducing agent branch pipes. The outer end outlets of the three groups of current-carrying branch pipes are arranged from bottom to top on one vertical surface of the shell and are arranged below a group of bypass main pipes. The outer ends of the three groups of current-carrying branch pipes are respectively fixed with a second straight-through joint, a third straight-through joint, and a fourth straight-through joint. The reducing agent branch pipe is arranged directly below another group of bypass main pipes, and the outer end of the reducing agent branch pipe is fixed with a fifth straight-through joint.

3. An ICP-coupled hydride generator according to claim 1 or 2, characterized in that: It also includes a partition with a number of through holes. The reaction chamber includes a lower reaction chamber and an upper diffusion chamber. A stop platform structure is provided between the lower reaction chamber and the upper diffusion chamber. The outer periphery of the partition is supported by the stop platform structure, and the lower surface of the lower convex connection end is pressed onto the upper surface of the corresponding outer periphery of the partition.

4. The ICP-coupled hydride generator according to claim 3, characterized in that: A first sealing ring is provided between the lower surface of the lower convex connection end and the outer peripheral upper surface of the partition, and a second sealing ring is provided between the upper stop ring surface of the lower convex connection end and the upper ring surface of the shell.

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