An acidification blowing absorption device for determining sulfides in water

Abstract

This utility model discloses an acidification blowing absorption device for the determination of sulfides in water, comprising a housing, a reaction flask, and an absorption flask. In this application, the total volume of the reaction flask is adjusted from 500mL to 350mL. The change in shape and reduction in total volume decreases the surface area of ​​the water sample inside the reaction flask to 1 / 6 of its original size, while increasing the height of the liquid column to four times its original height. The significant increase in the liquid column height greatly improves the efficiency of gas exchange during the blowing process, and the gas is nearly completely expelled. In addition, the inlet, liquid inlet, and outlet are transformed from an integral, interconnected spherical reaction flask into two separate sections. This not only facilitates the disassembly, assembly, and cleaning of the sample bottle and the integrated liquid inlet-blowing tube with a ground glass stopper, but also, because there are no dead corners at the top, ensures near-complete hydrogen sulfide gas exchange. Continuous blowing can stabilize the hydrogen sulfide gas expulsion efficiency at over 90%, meeting the requirements of small dispersion and high accuracy in sample determination results, and achieving the purpose of quantitative determination.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring and analysis technology, and in particular to an acidification blowing absorption device for determining sulfides in water. Background Technology

[0002] The sulfide acidification purging apparatus is an experimental device designed to determine the sulfide content in a sample. Its main function is to convert the sulfides in the sample into a detectable form through a series of chemical treatment steps, including acidification, purging, and absorption, and finally perform quantitative analysis.

[0003] Chinese Patent Publication No. CN220932550U, published on May 10, 2024, discloses a water sulfide acidification aeration device, including an instrument housing. A fixing plate is symmetrically fixedly connected to the interior of the instrument housing near its center, and an air inlet is fixedly connected to the side wall of the instrument housing near its bottom.

[0004] The reaction flasks in existing water sulfide acidification blowing devices, such as those mentioned above, are mostly three-necked glass flasks, which have the following drawbacks:

[0005] 1. Since the three-necked flask has a volume of 500mL and is circular, the volume of the upper space is significantly larger than the volume of the water sample in the lower space. This makes it difficult for the hydrogen sulfide gas that enters the upper space to be blown out.

[0006] 2. Because the three-necked flask has the largest cross-sectional area in the middle, the surface area of ​​the water sample is very large, but the height of the water sample is very low. This layout is very unfavorable for the hydrogen sulfide gas produced by the reaction to be blown out by nitrogen gas.

[0007] 3. Because the ports on both sides of the three-necked flask are relatively low and the outlet is on one side, a dead zone can easily be formed from the outlet to the top to the other side, which is very unfavorable for gas exchange and output;

[0008] To address the aforementioned issues, an acidification blowing absorption device for the determination of sulfides in water is proposed. Utility Model Content

[0009] The purpose of this invention is to provide an acidification blowing absorption device for determining sulfides in water in order to solve the above-mentioned problems.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] An acidification and aeration absorption device for determining sulfides in water includes an integrated housing, a reaction flask, an integrated liquid addition and aeration pipe, and an absorption flask. The integrated housing includes a gas supply component and a temperature control component. The gas supply component has six flow meters integrated at its front, a centralized air inlet on its right side, and six air outlets at its rear. The temperature control component includes a water bath, a heating element, a temperature controller, and a water outlet. The reaction flask is made entirely of glass, with a ground joint on the inner side of the upper part, which is connected to an integrated liquid addition and blowing tube with a ground joint. The integrated liquid addition and blowing tube is also made entirely of glass and is divided into two non-communicating sections. The upper liquid addition port is connected to the air inlet, and the lower air outlet is connected to the reaction flask. The upper inner side of the liquid addition port is ground and sealed with a ground joint plug. The lower part is connected to the reaction flask via a side blowing tube. The air inlet and the air supply port are connected by a flexible hose, and the air outlet and the absorption bottle are connected by a pointed blowing tube and a flexible hose.

[0012] Preferably, the reaction flask has a cylindrical structure and a round bottom.

[0013] Preferably, the liquid filling and blowing pipe is a one-piece structure, and the top of the liquid filling port is sealed with a ground glass plug.

[0014] Preferably, an air blowing pipe is fixedly connected to the bottom of the integrated liquid filling and air blowing pipe, and the bottom of the air blowing pipe has multiple small holes.

[0015] Preferably, the air supply port is connected to the air inlet via a first hose, and the air outlet is connected to the blowpipe and the absorption bottle via a second hose.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] In this application, the total volume of the reaction bottle is adjusted from 500mL to 350mL, reducing the air / sample ratio from 2.5 to 1.75 to improve the efficiency of gas exchange during the blowing process. The reaction bottle is changed from a spherical shape to a cylindrical shape, which reduces the surface area of ​​the water sample while increasing the height of the liquid column, thus greatly improving the efficiency of gas removal from the water sample. The inlet, outlet, and outlet are separated from the integrated spherical reaction bottle, becoming two separate sections connected in the middle with a ground glass stopper 1 and a ground glass stopper 2 at the top. This not only facilitates the assembly and disassembly of the sample bottle and the integrated ground glass stopper, but also ensures near-complete hydrogen sulfide gas exchange because there are no dead corners at the top. Continuous blowing can stabilize the hydrogen sulfide gas removal efficiency at over 90%, meeting the requirements of small dispersion and high accuracy in sample measurement results, and achieving the purpose of quantitative determination. Attached Figure Description

[0018] Figure 1A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0019] Figure 2 A side view diagram of the structure according to an embodiment of the present invention is shown;

[0020] Figure 3 A schematic diagram of the separate structure of the reaction flask, the integrated liquid addition and blowing pipe, and the absorption bottle according to an embodiment of the present invention is shown.

[0021] Figure 4 A schematic diagram of the absorption bottle structure according to an embodiment of the present invention is shown;

[0022] Figure 5 A schematic diagram of the connection structure between the reaction flask and the liquid addition and blowing pipe according to an embodiment of the present invention is shown.

[0023] Legend:

[0024] 1. Chamber; 101. Gas supply assembly; 102. Temperature control assembly; 2. Reaction flask; 3. Liquid addition and gas blowing pipe; 4. Gas outlet; 5. Liquid addition port; 6. Ground glass plug II; 7. Hoses I; 8. Side air inlet; 9. Hoses II; 10. Gas supply port; 11. Side gas blowing pipe; 12. Absorption bottle; 13. Pointed gas blowing pipe; 14. Centralized air inlet; 15. Water outlet; 16. Flow meter. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution:

[0027] An acidification and aeration absorption device for determining sulfides in water includes an integrated housing 1, a reaction flask 2, an integrated liquid addition and aeration pipe 3, and an absorption bottle 12. The housing 1 has a gas supply assembly 101 and a temperature control assembly 102. The gas supply assembly 101 has a centralized air inlet 14, an air outlet 10, and a flow meter 16 integrated on its outer side. The temperature control assembly 102 has a water bath, a heating element, a temperature controller, and a water outlet 15 integrated at its front. The top of the reaction flask 2 is sealed to the integrated liquid addition and aeration pipe 3 with a ground glass plug. 3 is divided into two non-communicating sections. The upper section has a liquid inlet 5 connected to a side air inlet 8, and the lower section has a left-side air outlet 4 connected to the reaction bottle 2. The air outlet 4 and the side blowing pipe 11 have a diameter of 6 mm. The part that enters the absorbent liquid uses a thinned side blowing pipe 11 with an outlet diameter of 1.2 mm. There is a side air inlet 8 on the right side of the liquid inlet 5. The side air inlet 8 is connected to the air supply port 10. The reaction bottle 2 has a cylindrical structure and a round bottom. The bottle mouth diameter of the reaction bottle 2 is 38 mm, the height is 320 mm, and the total volume is 350 mL.

[0028] The total volume of reaction bottle 2 was adjusted from 500mL to 350mL, reducing the air / sample ratio from 2.5 to 1.75 to improve the efficiency of gas exchange during the blowing process. The shape of reaction bottle 2 was changed from spherical to cylindrical, which reduced the cross-sectional area of ​​the water sample surface and the height of the water sample column, thus greatly improving the efficiency of gas removal from the water sample. The conventional side air inlet 8, liquid inlet 5, and air outlet 4 were separated from reaction bottle 2 and integrated with the liquid addition and blowing tube 3 in the middle. This not only facilitates the disassembly, assembly, and cleaning of reaction bottle 2 and the ground glass stopper as a whole, but also ensures that the hydrogen sulfide gas exchange is almost complete because there are no dead corners at the top. Continuous blowing can keep the efficiency of hydrogen sulfide gas removal stable at over 90%, meeting the requirements of small dispersion and high accuracy of sample measurement results, and achieving the purpose of quantitative determination.

[0029] It should be noted that the gas supply component 101 and the temperature control component 102 here both adopt existing technologies, and their specific mechanisms and working methods will not be described in detail here.

[0030] Specifically, such as Figure 2 and Figure 5 As shown, a ground glass plug 6 is connected to the top of the liquid filling port 5 to seal the liquid filling port 5. A side blowing pipe 11 is fixedly connected to the bottom of the liquid filling port 5. The bottom of the side blowing pipe 11 integrates multiple sets of air inlets. The side blowing pipe 11 has a diameter of 6mm and a length of 29mm to ensure the uniformity of gas output. The air supply port 10 is connected to the side air inlet 8 through a hose 7. The air outlet 4 is connected to a hose 9 to ensure a stable connection between the air supply port 10 and the side air inlet 8, and between the air outlet 4 and the absorption bottle 12.

[0031] Working principle: The total volume of reaction bottle 2 is adjusted from 500mL to 350mL, reducing the air / sample ratio from 2.5 to 1.75 to improve the efficiency of gas exchange during the blowing process. The shape of reaction bottle 2 is changed from spherical to cylindrical, which reduces the cross-sectional area of ​​the water sample surface and the height of the water sample column, greatly improving the efficiency of gas removal from the water sample. The conventional side air inlet 8, liquid inlet 5, and air outlet 4 are separated from reaction bottle 2 and integrated with the liquid addition and blowing tube 3 in the middle. This not only facilitates the disassembly, assembly, and cleaning of reaction bottle 2 and the ground glass stopper as a whole, but also ensures near-complete hydrogen sulfide gas exchange because there are no dead corners at the top. Continuous blowing can keep the efficiency of hydrogen sulfide gas removal stable at over 90%, meeting the requirements of small dispersion and high accuracy of sample measurement results, and achieving the purpose of quantitative determination.

[0032] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An acidification and aeration absorption device for determining sulfides in water, comprising an integrated housing (1), a reaction flask (2), an integrated liquid addition and aeration pipe (3), and an absorption bottle (12), wherein the integrated housing (1) includes a gas supply component (101) and a temperature control component (102), the gas supply component (101) has six flow meters (16) integrated on its front side, a centralized air inlet (14) is provided on the right side of the gas supply component (101), and six air supply ports (10) are provided at the rear of the gas supply component (101), and the temperature control component (102) includes a water bath, a heating tube, a temperature controller, and a water outlet (15), characterized in that, The reaction flask (2) is made entirely of glass, with a ground joint on the inner side of the upper part, which is connected to an integrated liquid addition and blowing pipe (3) with a ground joint. The integrated liquid addition and blowing pipe (3) is made entirely of glass and is divided into two non-communicating sections. The upper liquid addition port (5) is connected to the side air inlet (8), and the lower air outlet (4) is connected to the reaction flask (2). The upper inner side of the liquid addition port (5) is ground and sealed with a ground joint plug (6). The lower part is connected to the reaction flask (2) by a side blowing pipe (11). The side air inlet (8) is connected to the air supply port (10) by a hose (7). The air outlet (4) is connected to the absorption bottle (12) by a pointed blowing pipe (13) and a hose (9).

2. An acidifying gas bubbling absorption apparatus for determining a sulfide in water according to claim 1, characterized by, The liquid filling and blowing pipe (3) is a one-piece structure, and the top of the liquid filling port (5) is sealed with a ground joint plug (6).

3. An acidification bubbling absorption apparatus for determining a sulfide in water according to claim 2, characterized by, The reaction flask (2) has a cylindrical structure and a round bottom.

4. An acidification bubbling absorption apparatus for determining a sulfide in water according to claim 3, characterized by, The bottom of the integrated liquid filling and blowing pipe (3) is fixedly connected to a side blowing pipe (11), and the bottom of the side blowing pipe (11) has multiple small holes.

5. An acidification bubbling absorption apparatus for determining a sulfide in water according to claim 4, characterized by, The air supply port (10) is connected to the side air inlet (8) via a hose (7), and the air outlet (4) is connected to the blow pipe (13) and the absorption bottle (12) via a hose (9).

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