Gas sampling assembly of flame atomic absorption spectrometer

Abstract

The utility model relates to a gas sample introduction component of flame atomic absorption spectrometer, including atomizer, air intake piece and acetylene intake piece, the air intake piece is inserted in the one end of atomizer, the acetylene intake piece is detachably connected to the other end of atomizer, the periphery of atomizer is sleeved with the setting piece, the setting piece is detachably connected to the other end of atomizer, the setting piece is detachably connected to the other end of atomizer, and the setting piece is detachably connected to the other end of atomizer. The placement piece comprises a sleeve, a positioning groove used for positioning the air inlet piece is formed in the sleeve, and a locking part used for fixing the atomizer is arranged in the sleeve. The mixed gas of acetylene and air is integrated on one atomizer, so that the whole atomizer can be replaced, the replacement is simple, convenient and rapid, and air leakage is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrometers, and particularly relates to a gas sampling component of a flame atomic absorption spectrometer. Background Technique

[0002] A flame atomic absorption spectrometer is a common chemical analysis instrument that can measure the content of various elements in a sample. Its principle is to utilize the characteristic that the atoms of the elements to be measured in the sample absorb spectral lines during flame combustion, and calculate the concentration of the corresponding elements in the sample by measuring the intensity of the absorbed spectral lines.

[0003] For the normal ignition of the flame of the spectrometer, precise proportioning of acetylene and air is required. However, the gas mixing of the current flame atomic absorption spectrometers is cumbersome and prone to air leakage, which brings inconvenience to the normal use of the flame atomic absorption spectrometer. Content of the Utility Model

[0004] The purpose of the utility model is to provide a gas sampling component of a flame atomic absorption spectrometer to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A gas sampling component of a flame atomic absorption spectrometer includes an atomizer, an air inlet component, and an acetylene inlet component. The air inlet component is inserted into one end of the atomizer, the acetylene inlet component is detachably connected to the other end of the atomizer, and a placement component is sleeved on the outer periphery of the atomizer. The placement component includes a sleeve, and a positioning groove for positioning the air inlet component is provided on the sleeve, and a locking part for fixing the atomizer is provided inside the sleeve.

[0007] In a possible implementation manner, the air inlet component includes an air inlet nozzle and an air guide pipe, and the air inlet nozzle is connected to the atomizer through the air guide pipe.

[0008] In a possible implementation manner, an external thread is provided at the connection part of the air inlet nozzle and the air guide pipe.

[0009] In a possible implementation manner, the acetylene inlet component includes an acetylene inlet nozzle and an acetylene guide pipe, and the acetylene inlet nozzle is connected to the atomizer through the acetylene guide pipe.

[0010] In a possible implementation manner, a fixing part is provided at the connection part of the acetylene guide pipe and the atomizer, and the acetylene guide pipe is screwed onto the atomizer through the fixing part.

[0011] In a possible implementation, a positioning ring is formed on the outer periphery of the sleeve, and the positioning ring is adjacent to a fixing nut.

[0012] In a possible implementation, a sealing ring is provided between the fixing nut and the sleeve.

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] By integrating the mixture of acetylene and air onto one atomizer, it can be replaced as a whole, the replacement is simple and fast, and effectively prevents air leakage. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the gas sampling component of the flame atomic absorption spectrometer of the present utility model;

[0016] Figure 2 It is a sectional view of the gas sampling component of the flame atomic absorption spectrometer of the present utility model.

[0017] In the figure: 1. Atomizer, 2. Acetylene inlet part, 3. Air inlet part, 4. Mounting part, 5. Fixing nut, 6. Sealing ring, 21. Acetylene inlet nozzle, 22. Acetylene gas pipe, 23. Fixing part, 31. Air inlet nozzle, 32. Air gas pipe, 41. Sleeve, 42. Positioning ring, 43. Positioning groove, 44. Locking part. Detailed Implementation Modes

[0018] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the drawings and preferred embodiments, details the specific implementation modes, structures, features and their effects of the present utility model as follows.

[0019] As Figure 1-2 shown, a gas sampling component of a flame atomic absorption spectrometer includes an atomizer 1, an air inlet part 3 and an acetylene inlet part 2. The air inlet part 3 is inserted into one end of the atomizer 1, the acetylene inlet part 2 is detachably connected to the other end of the atomizer 1, a mounting part 4 is sleeved on the outer periphery of the atomizer 1, the mounting part 4 includes a sleeve 41, a positioning groove 43 for positioning the air inlet part 3 is provided on the sleeve 41, and a locking part 44 for fixing the atomizer 1 is provided inside the sleeve 41.

[0020] Among them, the atomizer 1 adopts a cylindrical cavity, and a connection port for the acetylene inlet member 2 can be provided on the cavity. The acetylene inlet member 2 can be plugged into and unplugged from the atomizer 1 through this connection port. In this application, the main body of the placement member 4 adopts a sleeve structure, and the diameter of the sleeve 41 is larger than the diameter of the atomizer 1, so that the atomizer 1 can be fixed in the placement member 4 without shaking, thereby increasing the airtightness. In order to fix the atomizer 1 more firmly in the placement member 4, the locking portion 44 provided in the sleeve 41 can adopt two semi-circular elastic pieces, and these two semi-circular elastic pieces can open when the atomizer 1 is inserted and return to their original positions after the atomizer 1 is inserted, locking the atomizer 1. The air inlet member 3 and the atomizer 1 can be integrally formed by welding or other means.

[0021] The specific structures of the air inlet member 3 and the acetylene inlet member 2 will be described below. The air inlet member 3 includes an air inlet nozzle 31 and an air guide pipe 32, and the air inlet nozzle 31 is connected to the atomizer 1 through the air guide pipe 32. An external thread is provided at the connection portion of the air inlet nozzle 31 and the air guide pipe 32.

[0022] Among them, the air inlet nozzle 31 can be connected to an air compressor to supply air to the atomizer 1. The aforementioned external thread can be connected to the internal thread of the air pipe of the air compressor, so as to fixedly connect the air inlet member 3 to the air compressor. The cross-section of the positioning groove 43 is semi-circular and the bracket is smaller than the diameter of the air guide pipe 32 in the air inlet member 3, so that the air inlet member 3 can be firmly fixed in the placement member 4.

[0023] The acetylene inlet member 2 includes an acetylene inlet nozzle 21 and an acetylene guide pipe 22, and the acetylene inlet nozzle 21 is connected to the atomizer 1 through the acetylene guide pipe 22. A fixing portion 23 is provided at the connection portion of the acetylene guide pipe 22 and the atomizer 1, and the acetylene guide pipe 22 is screwed onto the atomizer 1 through the fixing portion 23.

[0024] Among them, the acetylene inlet nozzle 21 can be connected to an acetylene generator or an acetylene cylinder. An acetylene gas connection hole is provided in the atomizer 1, and there is an internal thread in this hole. An external thread is formed on the fixing portion 23. After inserting the acetylene guide pipe 22 into the acetylene gas connection hole and tightening it, the fixation between the acetylene inlet member 2 and the atomizer 1 can be achieved.

[0025] A positioning ring 42 is formed on the outer periphery of the sleeve 41, and the positioning ring 42 is adjacent to a fixing nut 5. A sealing ring 6 is provided between the fixing nut 5 and the sleeve 41. After the acetylene inlet member 2 and the atomizer 1 are assembled, the air inlet member 3 is also fixed in the positioning groove 43. The fixing nut 5 is sleeved on the outer periphery of the sleeve 41, and then fixed at a position adjacent to the positioning ring 42 and tightened. This can prevent the placement member 4 from moving horizontally during use, so that the components connected to the atomizer 1 will not be displaced, ensuring the airtightness of the entire assembly. At the same time, when component replacement is required, the fixing nut 5 can be loosened, and then components such as the acetylene inlet member 2 can be removed, enabling rapid component replacement.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", "left and right", "front and back", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0027] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or variations equivalent to the equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the technical content of the technical solution of the present invention, any brief modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A gas sampling assembly for a flame atomic absorption spectrometer, characterized in that: The invention comprises an atomizer (1), an air intake member (3) and an acetylene intake member (2), wherein the air intake member (3) is plugged into one end of the atomizer (1), and the acetylene intake member (2) is detachably connected to the other end of the atomizer (1). A placement member (4) is sleeved on the outer periphery of the atomizer (1), and the placement member (4) comprises a sleeve (41), a positioning groove (43) for positioning the air intake member (3) is provided on the sleeve (41), and a locking portion (44) for fixing the atomizer (1) is provided inside the sleeve (41).

2. The gas sampling assembly of the flame atomic absorption spectrometer according to claim 1, characterized in that: The air intake member (3) comprises an air intake nozzle (31) and an air guide tube (32); the air intake nozzle (31) is connected to the atomizer (1) via the air guide tube (32).

3. The gas sampling assembly of the flame atomic absorption spectrometer according to claim 2, characterized in that: The connection portion between the air inlet nozzle (31) and the air guide pipe (32) is provided with an external thread.

4. The gas sampling assembly of the flame atomic absorption spectrometer according to claim 1, characterized in that: The acetylene air inlet component (2) comprises an acetylene air inlet nozzle (21) and an acetylene air guide tube (22); the acetylene air inlet nozzle (21) is connected to the atomizer (1) via the acetylene air guide tube (22).

5. The gas sampling assembly of the flame atomic absorption spectrometer according to claim 4, characterized in that: A fixing portion (23) is provided at the connection between the acetylene air guide pipe (22) and the atomizer (1), and the acetylene air guide pipe (22) is screwed onto the atomizer (1) via the fixing portion (23).

6. The gas sampling assembly of the flame atomic absorption spectrometer according to claim 1, characterized in that: A positioning ring (42) is formed on the outer periphery of the sleeve (41), and the positioning ring (42) is adjacent to a fixing nut (5).

7. The gas sampling assembly of the flame atomic absorption spectrometer according to claim 6, characterized in that: A sealing ring (6) is provided between the fixing nut (5) and the sleeve (41).

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