Atomic absorption spectrophotometer
By improving the structure of the atomic absorption spectrophotometer, the sample vial and connecting sleeve are rotated together, solving the problem of contamination and blockage of the capillary tube during insertion and removal, and achieving high-precision and convenient sample delivery.
Patent Information
- Application Number
- CN202422657941.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-11-01
AI Technical Summary
The capillary tubes of existing atomic absorption spectrophotometers are prone to contamination with impurities during insertion and removal, affecting detection accuracy. Furthermore, the capillary tubes may be bent or blocked, affecting normal liquid intake.
An atomic absorption spectrophotometer was designed. A connecting bracket was fixed to the front of the instrument body, and a connecting sleeve and capillary were installed on the rotating shaft. The sample bottle was connected to the connecting sleeve by a threaded connector. After rotating and inverting, the sample solution flowed into the connecting sleeve, and the capillary delivered it into the instrument body. The air pressure was kept balanced by the air inlet pipe, avoiding hand contact with the bottle mouth and the insertion of the capillary into the solution.
This ensures that the sample solution is not easily contaminated and the capillary is not easily clogged, thus improving the accuracy of detection and the convenience of operation.
Smart Images
Figure CN223897311U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spectroscopic equipment technology, and in particular to an atomic absorption spectrophotometer. Background Technology
[0002] Atomic absorption spectrophotometry, also known as atomic absorption spectrometry, analyzes metallic elements based on the absorption of characteristic radiation by ground-state atomic vapors. It can sensitively and reliably determine trace or ultra-trace elements. For example, when determining aluminum using atomic absorption spectrometry, after preparing the aluminum sample solution, the capillary of the atomic absorption spectrophotometer is inserted into the aluminum sample solution, and then the aluminum solution is drawn through the capillary for measurement. However, existing atomic absorption spectrophotometers have the following drawbacks in detection:
[0003] Before testing the aluminum solution sample, the capillary tube needs to be cleaned by immersing it in pure water. Then, it needs to be removed and inserted into multiple samples, including blank solution samples, for testing. During the insertion and removal process, the outer wall of the capillary tube is very easy to be contaminated with impurities, which will contaminate the sample solution and affect the accuracy of the test. Furthermore, if the bottom of the capillary tube touches the bottom of the sample bottle after it is inserted into the sample bottle, it may block the capillary tube inlet or bend the capillary tube, affecting the normal liquid inlet. Utility Model Content
[0004] The purpose of this utility model is to at least solve one of the technical defects described in the background art.
[0005] Therefore, one objective of this invention is to provide an atomic absorption spectrophotometer that addresses the problems in existing atomic absorption spectrophotometers where the outer wall of the capillary used for sampling is easily contaminated with dust, affecting accuracy, and capillary bending may affect normal liquid intake.
[0006] To achieve the above objectives, one embodiment of the present invention provides an atomic absorption spectrophotometer, including a body, a bracket fixedly connected to the front side of the body, a rotating shaft rotatably connected inside the bracket, a connecting sleeve fixedly connected to the middle of the rotating shaft, a capillary tube fixedly connected to one side of the connecting sleeve, the end of the capillary tube away from the connecting sleeve being connected to the body, and a sample bottle being threadedly connected inside the connecting sleeve.
[0007] The beneficial effects are as follows: When aspirating the sample, the sample bottle is connected to the connecting sleeve via the threaded connector. Then, the sample bottle is rotated around the axis, causing it to invert. At this time, the sample solution inside the sample bottle can flow into the connecting sleeve and then be transported to the machine body for testing through the capillary tube. When connecting and changing the sample, the operator's hands do not need to touch the mouth of the sample bottle, and the outer wall of the capillary tube does not need to be inserted into the sample solution. Therefore, the sample solution is not easily contaminated, ensuring the accuracy of the test. Furthermore, the capillary tube inlet will not be blocked, thus not affecting the normal liquid inlet.
[0008] Preferably, in any of the above embodiments, two support rods are fixedly connected to the top of the machine body, and an arc-shaped sleeve is fixedly connected between the two support rods.
[0009] The beneficial effects are as follows: after the sample bottle is connected to the connecting sleeve, the sample bottle is inverted and tilted inside the arc-shaped sleeve. The support rod and the arc-shaped sleeve can support the sample bottle, so that the sample bottle does not need to be held by hand, which facilitates the operation of the experimenter.
[0010] Preferably, in any of the above embodiments, an air inlet pipe is fixedly connected to the bottom of the outer surface of the sample bottle, and a sealing cap is threaded onto the outer surface of the air inlet pipe.
[0011] The beneficial effects are as follows: after connecting the sample bottle to the connecting sleeve, after inverting the sample bottle and removing the sealing cap, outside air can enter the sample bottle through the air inlet tube, thereby ensuring the air pressure balance inside and outside the sample bottle, so that the sample solution can flow smoothly into the capillary tube.
[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This is a schematic diagram of the structure of the body of this utility model.
[0016] Figure 3 This is a schematic diagram of the sample bottle of this utility model.
[0017] The components are: 1. Body, 2. Support, 21. Rotating shaft, 22. Connecting sleeve, 23. Capillary tube, 24. Stopper, 3. Sample bottle, 31. Connector, 32. Air inlet pipe, 33. Bottle cap, 34. Sealing cap, 4. Support rod, 41. Arc sleeve. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0020] This invention provides an atomic absorption spectrophotometer.
[0021] Example 1:
[0022] like Figure 1-3 As shown, it includes a body 1, a bracket 2 fixedly connected to the front of the body 1, a rotating shaft 21 rotatably connected inside the bracket 2, a connecting sleeve 22 fixedly connected to the middle of the rotating shaft 21, and a capillary tube 23 fixedly connected to one side of the connecting sleeve 22. The connecting sleeve 22 consists of a cylinder with threads on the inner wall and a hollow cone. The capillary tube 23 is connected to the tip of the hollow cone, and the interior of the capillary tube 23 communicates with the interior of the connecting sleeve 22. The end of the capillary tube 23 away from the connecting sleeve 22 is connected to the body 1. A sample bottle 3 is threadedly connected to the interior of the connecting sleeve 22. A connector 31 is fixedly connected to the top of the sample bottle 3. The sample bottle 3 is threadedly connected to the connecting sleeve 22 through the connector 31. By rotating the sample bottle 3, it can be inverted, so that the sample in the sample bottle 3 can flow downward into the connecting sleeve 22, and the capillary tube 23 can draw up the sample and transport it into the body 1.
[0023] When not in use, such as Figure 3 As shown, a cap 33 is threaded onto the connector 31 at the top of the sample bottle 3 to prevent impurities from entering the sample bottle 3.
[0024] Specifically, such as Figure 1 and 3As shown, an air inlet pipe 32 is fixedly connected to the bottom of the outer surface of the sample bottle 3. When in use, after the sample in the sample bottle 3 enters the machine body 1 through the capillary tube 23, the outside gas can enter the sample bottle 3 through the air inlet pipe 32, thereby avoiding the problem that the air pressure inside the sample bottle 3 is lower than the outside atmospheric pressure, which would prevent the sample from flowing downward. When not in use, a sealing cap 34 is threaded on the outer surface of the air inlet pipe 32 to prevent dust or impurities from entering the sample bottle 3.
[0025] When not in use, the internal thread of the connecting sleeve 22 is connected to a plug 24 to seal the inside of the connecting sleeve 22 and prevent impurities from getting into the connecting sleeve 22.
[0026] It should be noted that the body 1 is the main body of the atomic absorption spectrophotometer, and its internal structure is existing technology, which is known to those skilled in the art. Therefore, it will not be described in detail in this application. This application focuses on the improvement of the sample aspiration part of the capillary of the atomic absorption spectrophotometer.
[0027] Example 2:
[0028] like Figure 1-2 As shown, based on Embodiment 1, two support rods 4 are fixedly connected to the top of the body 1, and an arc-shaped sleeve 41 is fixedly connected between the two support rods 4. After the sample bottle 3 is inverted, it can be tilted and overlapped in the arc-shaped sleeve 41. The support rods 4 support the sample bottle 3 through the arc-shaped sleeve 41, so that the sample bottle 3 can be supported without holding it by hand, which facilitates the operation of the experimenter.
[0029] The working principle of this utility model is as follows: When in use, the stopper 24 is taken out from the connecting sleeve 22, and then the cap 33 on the top of the sample bottle 3 is opened. The sample bottle 3 is then threaded into the connecting sleeve 22 through the connector 31. The sample bottle 3 is then rotated around the rotating shaft 21, so that the sample bottle 3 is upside down and overlaps in the arc-shaped sleeve 41. Then the sealing cap 34 is opened, and the sample in the sample bottle 3 can flow smoothly into the capillary tube 23 through the connecting sleeve 22. Finally, it is transported to the machine body 1 through the capillary tube 23 for testing.
Claims
1. An atomic absorption spectrophotometer, comprising a body (1), characterized in that, A bracket (2) is fixedly connected to the front side of the machine body (1). A rotating shaft (21) is rotatably connected inside the bracket (2). A connecting sleeve (22) is fixedly connected to the middle of the rotating shaft (21). A capillary tube (23) is fixedly connected to one side of the connecting sleeve (22). The end of the capillary tube (23) away from the connecting sleeve (22) is connected to the machine body (1). A sample bottle (3) is threadedly connected inside the connecting sleeve (22).
2. The atomic absorption spectrophotometer according to claim 1, characterized in that, The top of the sample bottle (3) is fixedly connected to a connector (31), and the sample bottle (3) is threadedly connected to the connecting sleeve (22) through the connector (31).
3. The atomic absorption spectrophotometer according to claim 2, characterized in that, The sample bottle (3) has a cap (33) threaded onto the connector (31) at the top.
4. The atomic absorption spectrophotometer according to claim 1, characterized in that, Two support rods (4) are fixedly connected to the top of the body (1), and an arc-shaped sleeve (41) is fixedly connected between the two support rods (4).
5. The atomic absorption spectrophotometer according to claim 1, characterized in that, An air inlet pipe (32) is fixedly connected to the bottom of the outer surface of the sample bottle (3), and a sealing cap (34) is threadedly connected to the outer surface of the air inlet pipe (32).
6. The atomic absorption spectrophotometer according to claim 1, characterized in that, The connecting sleeve (22) has a plug (24) connected to its internal thread.