Exhaust device for atomic absorption spectrometer

Abstract

The application provides an exhaust device for an atomic absorption spectrometer, comprising a suction structure, the suction structure is a closed annular tubular structure, a plurality of suction ports are arranged on the inner ring wall of the suction structure in an annular distribution, the suction structure is connected with a suction pipeline which is in communication with the suction structure and connected with an air pipe, and a liquid collecting structure for collecting condensed liquid is connected to the lower end of the suction structure. The application can ensure the normal exhaust of the atomic absorption spectrometer, collect the condensed liquid generated during the exhaust of the atomic absorption spectrometer into the liquid collecting structure, so as to avoid the problem that the condensed liquid drops on the atomic absorption spectrometer, damages the atomic absorption spectrometer, and affects the accuracy of the test.

Description

Technical Field

[0001] This application relates to atomic absorption spectrometer technology, and more particularly to an exhaust device for an atomic absorption spectrometer. Background Technology

[0002] In environmental monitoring, atomic absorption spectrometry is commonly used to detect heavy metals (Pb, Cd, Hg, etc.) in water or soil.

[0003] Currently, a commonly used atomic absorption spectrometer employs flame atomic absorption spectrometry for elemental detection. During detection, the solution is evaporated by a flame before the detection is performed. To prevent the evaporated solution from affecting the air quality in the laboratory, an exhaust hood is usually installed above the atomic absorption spectrometer. The exhaust hood is connected to a duct that connects to the outside environment, and an exhaust fan is installed on the duct. When the exhaust fan is working, the exhaust hood draws in the vapor generated by the atomic absorption spectrometer, and then the vapor is transported to the outside environment through the duct.

[0004] However, when the high-temperature steam generated by the atomic absorption spectrometer comes into contact with the cooler exhaust hood, it condenses on the hood to form condensate, which then flows down the hood. Moreover, the existing exhaust hoods are simple funnel-shaped structures that cannot collect the condensate. During the detection process, this condensate easily drips onto the atomic absorption spectrometer, which can not only damage the atomic absorption spectrometer but also affect the accuracy of the test. Utility Model Content

[0005] This application provides an exhaust device for an atomic absorption spectrometer to solve the problem that the exhaust hood of existing atomic absorption spectrometers cannot collect condensate after it is generated, and that the condensate easily drips onto the atomic absorption spectrometer during the detection process.

[0006] This application provides an exhaust device for an atomic absorption spectrometer, including an intake structure, wherein the intake structure is a closed annular tubular structure; The inner ring wall of the air intake structure is provided with multiple air intake ports arranged in a ring shape; The air intake structure is connected to an air intake pipe that communicates with it and is also connected to the air duct. The lower end of the air intake structure is connected to a liquid collection structure for collecting condensate.

[0007] Optionally, the intake pipe includes a tee fitting, which has a Y-shaped structure; One of the three-way fittings is vertically upward and sealed to the air duct. The other two ports of the three-way fitting are sealed to air guide pipes, and the two air guide pipes are sealed to both ends of the air intake structure.

[0008] Optionally, the air guide tube includes an elbow, one end of which is connected and sealed to the upper end of the air intake structure, and the other end of which is sealed to a connecting pipe that is connected to it and is inclined, and the connecting pipe and the tee fitting are sealed to their corresponding ports.

[0009] Optionally, the liquid collection structure includes a liquid collection pipeline, one end of which is connected and sealed to the lower end of the air intake structure, and the other end of which is connected to a liquid collection tank.

[0010] Optionally, the liquid collection pipeline includes a liquid guide pipe distributed in a horizontal direction, and the liquid guide pipe is made of a rigid material; One end of the liquid guide tube is rotatably connected to a vertically distributed drain tube, and the drain tube is connected and sealed to the lower end of the air intake structure. The other end of the liquid guide tube is connected to a flexible tube, which is connected to the liquid collection tank.

[0011] Optionally, the liquid guide tube is inclined along the horizontal direction, with the upper inclined end of the liquid guide tube connected to the drain tube and the lower inclined end of the liquid guide tube connected to the hose.

[0012] Optionally, the collection tank includes a tank body, which is a hollow structure with an open top. A detachable tank cover is installed at the top of the tank body, and the hose passes through the tank cover and is sealed to the tank cover. A rubber suction cup is installed at the lower middle part of the barrel body, and multiple support legs distributed around the rubber suction cup are fixed at the lower end of the barrel body.

[0013] Optionally, the lid is transparent.

[0014] The exhaust device for an atomic absorption spectrometer provided in this application features an intake structure, which is a closed annular tubular structure. The inner ring wall of the intake structure has multiple annularly distributed intake ports. The intake structure is connected to an intake pipe that communicates with it and is also connected to a duct. The lower end of the intake structure is connected to a liquid collection structure for collecting condensate. During operation, the multiple intake ports on the inner ring wall of the intake structure simultaneously draw the vapor generated by the atomic absorption spectrometer into the intake structure. The vapor then flows from the intake pipe into the duct, which transports it to the outside. The vapor condenses within the intake structure, intake pipe, and duct, forming condensate. This condensate collects at the bottom of the intake structure and flows into the liquid collection structure, where it is collected. Compared to existing atomic absorption spectrometer exhaust methods, this device ensures normal exhaust of the atomic absorption spectrometer while collecting the generated condensate in the liquid collection structure. This prevents condensate from dripping onto the atomic absorption spectrometer, damaging it, and affecting the accuracy of the test. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of the exhaust device for an atomic absorption spectrometer provided in the embodiments of this application; Figure 2 This is a top view of the exhaust device for an atomic absorption spectrometer provided in an embodiment of this application. Figure 3 A partial three-dimensional structural schematic diagram of the exhaust device for an atomic absorption spectrometer provided in the embodiments of this application; Figure 4 This is a three-dimensional cross-sectional view of the intake structure of the exhaust device for an atomic absorption spectrometer provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Suction structure; 2. Suction port; 3. Suction pipe; 31. T-fitting; 32. Air guide pipe; 32. Elbow; 321. Connecting pipe; 322. Liquid collection structure; 4. Liquid collection pipe; 41. Liquid guide pipe; 411. Drain pipe; 412. Flexible hose; 413. Liquid collection bucket; 42. Bucket body; 421. Bucket lid; 422. Rubber suction cup; 423. Support leg; 424. 5. Air duct; 6. Laboratory table; 7. Atomic absorption spectrometer. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0019] like Figures 1-4 As shown: An embodiment of this application provides an exhaust device for an atomic absorption spectrometer, including an intake structure 1, which is a closed annular tubular structure.

[0020] The inner ring wall of the suction structure 1 is provided with a plurality of suction ports 2 arranged in a ring. Specifically, the plurality of suction ports 2 are arranged in a ring along the suction structure 1, and the suction ports 2 are located at the upper part of the inner ring wall to prevent the condensate inside the suction structure 1 from flowing out from the suction ports 2.

[0021] The air intake structure 1 is connected to an air intake pipe 3 that is connected to it and to the air duct 5.

[0022] The lower end of the suction structure 1 is connected to a liquid collection structure 4 for collecting condensate.

[0023] In this embodiment, the air intake pipe 3 is connected and sealed to the air duct 5 on which the exhaust fan is installed. After the air intake pipe 3 is connected to the air duct 5, the air intake structure 1 is horizontally positioned directly above the atomic absorption spectrometer 7.

[0024] During operation, after the atomic absorption spectrometer 7 starts working, the exhaust fan is activated. Once the exhaust fan is running, negative pressure is simultaneously generated inside the duct 5, the intake pipe 3, and the intake structure 1. Multiple intake ports 2 on the inner ring wall of the intake structure 1 simultaneously draw the steam generated by the atomic absorption spectrometer 7 into the intake structure 1 from multiple different locations. The steam inside the intake structure 1 then enters the duct 5 through the intake pipe 3, and the duct 5 transports the steam to the outside. As the steam flows through the intake structure 1, intake pipe 3, and duct 5, the condensate formed inside the intake structure 1 falls to the bottom of the intake structure 1 due to gravity. The condensate formed inside the intake pipe 3 flows along the intake pipe 3 into the intake structure 1 and falls to the bottom of the intake structure 1. The condensate formed inside the duct 5 flows along the duct 5 and intake pipe 3 into the intake structure 1 and falls to the bottom of the intake structure 1. In other words, the condensate in the intake structure 1, intake pipe 3, and duct 5 ultimately flows into the intake structure 1. The vapor generated during the operation of the atomic absorption spectrometer 7 is smoothly drawn into the suction structure 1 from the inside of the suction structure 1. While ensuring the normal exhaust of the atomic absorption spectrometer 7, the vapor generated during the exhaust process of the atomic absorption spectrometer 7 is collected at the bottom of the suction structure 1 and collected by the liquid collection structure 4. This avoids the problem of condensate dripping onto the atomic absorption spectrometer 7, damaging the atomic absorption spectrometer 7, and affecting the accuracy of the test.

[0025] In some embodiments of this application, the suction pipe 3 includes a three-way fitting 31, which has a Y-shaped structure. One port of the three-way fitting 31 is vertically upward and sealed and fixedly connected to the air duct 5. The other two ports of the three-way fitting 31 are sealed and fixedly connected to air guide pipes 32, and the two air guide pipes 32 are respectively sealed and fixedly connected to both ends of the suction structure 1. This allows the air duct 5 to simultaneously draw gas from both ends of the suction structure 1 through the suction pipe 3, thereby enhancing the flow effect of the gas inside the suction structure 1 and improving the steam extraction effect of the suction port 2. In addition, by setting the three-way fitting 31 with a Y-shaped structure, and with one port of the three-way fitting 31 vertically upward and sealed and fixedly connected to the air duct 5, it is convenient for condensate in the air duct 5 to flow into the suction pipe 3.

[0026] In some embodiments of this application, the air guide tube 32 includes an elbow 321, one end of which is connected to and sealed to the upper end of the intake structure 1. Specifically, one end of the elbow 321 passes through the upper end of the intake structure 1 and is sealed to the upper end of the intake structure 1. The other end of the elbow 321 is sealed to a connecting pipe 322 that is connected to it and is inclined, and the connecting pipe 322 and the tee fitting 31 are sealed to their corresponding ports. Specifically, the upper inclined end of the connecting pipe 322 is connected to the tee fitting 31, and the lower inclined end of the connecting pipe 322 is connected to the elbow 321.

[0027] In this embodiment, by setting up inclined connecting pipes 322, and the inclined lower end of the pipes being connected to the suction structure 1 via elbows 321, it is possible for the condensate inside the suction pipe 3 to flow into the suction structure 1.

[0028] In some embodiments of this application, the liquid collection structure 4 includes a liquid collection pipe 41, one end of which is connected to and sealed to the lower end of the air intake structure 1, and the other end of which is connected to a liquid collection tank 42.

[0029] In use, the condensate at the bottom of the suction structure 1 flows into the collection tank 42 through the collection pipe 41, and the collection tank 42 collects the condensate.

[0030] In some embodiments of this application, the liquid collection pipeline 41 includes a horizontally distributed liquid guide pipe 411, which is made of a rigid material. Specifically, the guide vane pipe is made of stainless steel.

[0031] One end of the liquid guide tube 411 is rotatably connected to a vertically distributed drain tube 412 via a sealed bearing. The drain tube 412 is connected to and sealed to the lower end of the suction structure 1. Specifically, the drain tube 412 passes through the lower end of the suction structure 1 and is sealed and fixedly connected to the lower end of the suction structure 1.

[0032] The other end of the liquid guide tube 411 is fixedly connected to a hose 413, and the hose 413 is fixedly connected to the liquid collection tank 42.

[0033] In this embodiment, the connection end of the liquid guide tube 411 and the flexible tube 413 can extend to the side of the atomic absorption spectrometer 7. After the liquid collection tank 42 is placed on the experimental table 6, the flexible tube 413 is distributed vertically to facilitate the flow of condensate into the liquid collection tank 42.

[0034] In use, the collection tank 42 is placed in an empty position on the experimental table 6 where the atomic absorption spectrometer 7 is placed to collect the condensate. When placing the collection tank 42, the liquid guide tube 411 is rotated according to the placement position of the collection tank 42. The flexible tube 413 moves synchronously with the liquid guide tube 411 to adapt to the position of the collection tank 42. Moreover, the flexible tube 413 is flexible, so the collection tank 42 can be flexibly placed according to the actual use of the experimental table 6 to avoid the collection tank 42 affecting the normal use of the experimental table 6.

[0035] In some embodiments of this application, the liquid guide tube 411 is inclined along the horizontal direction, the upper inclined end of the liquid guide tube 411 is connected to the drain tube 412, and the lower inclined end of the liquid guide tube 411 is connected to the hose 413, thereby facilitating the flow of condensate in the liquid guide tube 411 into the hose 413.

[0036] In some embodiments of this application, the collection tank 42 includes a tank body 421, which is a hollow structure with an open top. A removable lid 422 is installed at the top of the tank body 421 to facilitate the cleaning of condensate inside the tank body 421. A flexible hose 413 passes through the lid 422 and is sealed and fixedly connected to the lid 422.

[0037] Specifically, the barrel body 421 and the barrel lid 422 are connected by a threaded structure. When in use, the operator holds the barrel lid 422 with one hand and the barrel body 421 with the other hand, and then manually rotates the barrel body 421 to disassemble or install the barrel body 421 and the barrel lid 422.

[0038] A rubber suction cup 423 is installed at the lower middle part of the barrel body 421. Multiple support legs 424 are fixed at the lower end of the barrel body 421 and distributed around the rubber suction cup 423, so that the rubber suction cup 423 can fix the barrel body 421 on the experimental table 6, thereby preventing the barrel body 421 from tipping over after the staff accidentally touches it.

[0039] In this embodiment, the rubber suction cup 423 is prior art and will not be described in detail.

[0040] In some embodiments of this application, the lid 422 is transparent, which makes it easy for staff to observe the amount of liquid collected in the tank 421, so that staff can clean the condensate in the tank 421 in a timely manner.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An exhaust device for an atomic absorption spectrometer, characterized in that: It includes an air intake structure (1), which is a closed annular tubular structure; The inner ring wall of the air intake structure (1) is provided with a plurality of air intake ports (2) arranged in a ring. The air intake structure (1) is connected to an air intake pipe (3) that is connected to it and to the air duct. The lower end of the air intake structure (1) is connected to a liquid collection structure (4) for collecting condensate.

2. The exhaust device for an atomic absorption spectrometer according to claim 1, characterized in that: The intake pipe (3) includes a three-way fitting (31), which has a Y-shaped structure; One of the ports of the three-way fitting (31) is vertically upward and sealed to the air duct. The other two ports of the three-way fitting (31) are sealed to the air guide pipes (32), and the two air guide pipes (32) are sealed to the two ends of the air intake structure (1).

3. The exhaust device for an atomic absorption spectrometer according to claim 2, characterized in that: The air guide pipe (32) includes an elbow (321), one end of which is connected to and sealed to the upper end of the air intake structure (1), and the other end of which is sealed to a connecting pipe (322) that is connected to it and is inclined, and the connecting pipe (322) and the tee fitting (31) are sealed to their corresponding ports.

4. The exhaust device for an atomic absorption spectrometer according to claim 1, characterized in that: The liquid collection structure (4) includes a liquid collection pipe (41), one end of which is connected to the lower end of the air intake structure (1) and sealed, and the other end of which is connected to a liquid collection tank (42).

5. The exhaust device for an atomic absorption spectrometer according to claim 4, characterized in that: The liquid collection pipeline (41) includes a liquid guide pipe (411) distributed in the horizontal direction, and the liquid guide pipe (411) is made of rigid material; One end of the liquid guide tube (411) is rotatably connected to a vertically distributed drain tube (412), and the drain tube (412) is connected and sealed to the lower end of the air intake structure (1). The other end of the liquid guide tube (411) is connected to a hose (413), which is connected to the liquid collection tank (42).

6. The exhaust device for an atomic absorption spectrometer according to claim 5, characterized in that: The liquid guide tube (411) is inclined in the horizontal direction. The upper inclined end of the liquid guide tube (411) is connected to the drain tube (412), and the lower inclined end of the liquid guide tube (411) is connected to the hose (413).

7. The exhaust device for an atomic absorption spectrometer according to claim 5, characterized in that: The liquid collection tank (42) includes a tank body (421), which is a hollow structure with an open top. A detachable tank cover (422) is installed at the top of the tank body (421), and the hose (413) passes through the tank cover (422) and is sealed to the tank cover (422). A rubber suction cup (423) is installed at the lower middle part of the barrel (421), and a plurality of support legs (424) are fixed at the lower end of the barrel (421) and distributed around the rubber suction cup (423).

8. The exhaust device for an atomic absorption spectrometer according to claim 7, characterized in that: The lid (422) is transparent.

Images