An apparatus for measuring adsorption of oil substances in water

Abstract

The utility model relates to the technical field of adsorption column determination equipment, concretely relates to a kind of determination adsorption device of petroleum material in water, to solve the problem that adsorption column needs to be replaced or cleaned as a whole in the same batch experiment, affect the experimental process. Including shell and measuring column, the cylindrical accommodating cavity is opened in the shell, the accommodating cavity of shell is sleeved in the measuring column, the both ends of the measuring column are provided with limit component, and the limit component is used to limit the fixing measuring column. The measuring column is reliably fixed in the shell, to ensure that it does not shift or vibrate during operation, transportation and liquid injection, improve the measurement stability and repeatability. At the same time, the shell and the measuring column are convenient to disassemble and assemble, which is beneficial to maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the technical field of adsorption column measurement equipment, specifically to an adsorption device for measuring petroleum-based substances in water. Background Technology

[0002] The determination of petroleum-based substances in water is an important detection item in environmental monitoring, industrial wastewater treatment, and marine pollution control. Current standard methods typically employ an extraction-adsorption-infrared or gas chromatography analysis process, in which the adsorption column is used to enrich, purify, and dehydrate organic components in the water sample, and is a key component in the entire detection process.

[0003] Existing adsorption columns generally consist of a column body and internal adsorbent materials, commonly including anhydrous sodium sulfate and magnesium silicate. Anhydrous sodium sulfate primarily adsorbs moisture, acting as a dehydrating agent; magnesium silicate adsorbs polar interfering substances and impurities in the sample, achieving selective enrichment of petroleum-related target components. Common adsorption columns are single-use structures, with internal layers arranged from top to bottom as follows: upper filter, upper anhydrous sodium sulfate layer, magnesium silicate layer, lower anhydrous sodium sulfate layer, and lower filter. Liquid samples are collected after flowing downwards through each layer of adsorbent under gravity or negative pressure for subsequent quantitative analysis.

[0004] In the same batch, multiple experiments need to be carried out. Using disposable adsorption columns would be wasteful and difficult to clean and reuse. Most existing adsorption columns are single-use structures that are discarded after use, which increases the cost of consumables and is not conducive to environmental protection. If reusable adsorption columns are used, the adsorption columns need to be replaced and cleaned, which affects the efficiency of the experiment. Utility Model Content

[0005] The technical problem this invention aims to solve is that adsorption columns need to be replaced or cleaned entirely during the same batch of experiments, which affects the experimental process. The purpose is to provide an adsorption device for the determination of petroleum-based substances in water, which can divide the adsorption column into multiple modules, each of which can be operated according to the experimental requirements, thus avoiding the need to replace the entire adsorption column and affecting experimental efficiency.

[0006] This utility model is achieved through the following technical solution: An adsorption device for determining petroleum-based substances in water includes a housing and a measuring column. The housing has a cylindrical cavity, and the measuring column is fitted inside the cavity. Limiting components are provided at both ends of the measuring column to limit and fix the measuring column.

[0007] In the above technical solution, the measuring column is reliably fixed inside the housing, ensuring that it does not shift or vibrate during operation, transportation and liquid injection, thereby improving measurement stability and repeatability; at the same time, it facilitates the disassembly and assembly of the housing and the measuring column, making maintenance and replacement easier.

[0008] In some alternative technical solutions, the measuring column includes several sample columns, each sample column having a through hole in its center, and the sample columns can be connected to each other along a central axis.

[0009] In the above technical solution, the number of sample columns can be increased or decreased as needed, which facilitates the expansion of functions. For example, different numbers of sample columns or experimental materials may be used in various experiments, thereby enhancing the flexibility of the experiment.

[0010] In some optional technical solutions, one end of the sample column is provided with an annular groove, and the other end of the sample column is connected to an annular locking post, which is used to engage with the annular groove.

[0011] In the above technical solution, the annular retaining column and the annular retaining groove ensure concentric docking and proper positioning between sample columns, reduce assembly errors, and improve the efficiency of replacement and batch operation.

[0012] In some alternative technical solutions, the sample column is further provided with a groove at one end of the annular slot, the groove is located on the side near the through hole, and a sealing gasket is detachably connected in the groove.

[0013] In the above technical solution, a removable sealing gasket is provided at the snap-fit ​​joint to achieve flow path sealing and avoid interlayer leakage, thereby avoiding cross-contamination of the outer shell.

[0014] In some alternative technical solutions, a connecting cylinder is fixedly connected to the bottom of the sample column, a settling groove is provided at the top of the sample column, an external thread is provided on the outer peripheral wall of the connecting cylinder, and an internal thread is provided on the inner peripheral wall of the settling groove for threaded connection with the external thread of the connecting cylinder.

[0015] In the above technical solution, the threaded connection achieves a stable and reversible sealing connection, which helps with positioning, ensures a smooth transition of fluid at the interface, reduces leakage, and facilitates disassembly.

[0016] In some alternative technical solutions, the measuring column further includes a liquid collecting hopper, which has a conical structure and a collection cavity inside. The end of the liquid collecting hopper with a larger diameter is also connected to an annular retaining post.

[0017] In the above technical solution, the conical liquid collecting hopper concentrates the solution, reduces wall adhesion and splashing, and the leakage hole can be used to limit the liquid flow rate or for re-filtration.

[0018] In some optional technical solutions, a sleeve is also included, which is used to fit inside the receiving cavity of the outer shell. The inner peripheral wall of the sleeve is provided with several sliding grooves, and the outer peripheral wall of the sample column and the liquid collecting hopper is connected with a guide block for sliding connection with the sliding grooves.

[0019] In the above technical solution, the sleeve and sample column are precisely positioned by the sliding groove and guide block, ensuring the parallelism and sealing connection when multiple sample columns are inserted coaxially, which facilitates rapid assembly and reduces human error.

[0020] In some alternative technical solutions, a filter screen is connected to the bottom of the sample column.

[0021] In the above technical solution, the filter screen prevents the packing material or microparticles from flowing out, ensuring that the downstream collected liquid is clear, protecting the instruments and collection containers, and reducing the need for secondary filtration and the risk of clogging.

[0022] In some alternative technical solutions, a cover and a retaining ring are slidably connected within the receiving cavity of the outer shell.

[0023] In the above technical solution, the cover and retaining ring provide controllable opening and closing and position limiting functions, which facilitates rapid sealing, maintenance or isolation during operation, thereby improving safety and preventing backflow of contaminants.

[0024] In some alternative technical solutions, a support platform is connected to the outer peripheral wall at the bottom of the housing.

[0025] In the above technical solution, the support platform provides stable support for the entire device, is suitable for platform operation, and reduces the impact of vibration on the column.

[0026] Compared with the prior art, this utility model has the following advantages and beneficial effects: In this invention, the conventional adsorption column is divided into several sample columns that can be combined and assembled with each other. The modular design allows for the connection and assembly of different numbers of sample columns as needed, enhancing experimental flexibility. Multiple sample columns are housed inside a sleeve, which in turn is housed inside an outer shell, greatly preventing experimental materials and solutions from contaminating the outer shell. Under different experiments, there is no need to replace the outer shell and sleeve; only the sample columns need to be replaced, thus improving the efficiency of experimental completion. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of Embodiment 2 of this utility model; Figure 4 This is a cross-sectional view of the sample column in Embodiments 1 and 2 of this utility model.

[0028] The attached diagram shows the markings and corresponding component names: 1. Outer shell; 11. Retaining ring; 2. Sample column; 21. Annular retaining column; 22. Connecting cylinder; 23. Filter screen; 24. Guide block; 3. Sleeve; 31. Slide groove; 4. Liquid collection hopper. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are for explaining the utility model only and are not intended to limit the utility model. It should be noted that this utility model is already in the actual research and development stage.

[0030] Example 1: like Figure 1 and Figure 2 As shown, this embodiment 1 provides an adsorption device for determining petroleum-based substances in water. It is characterized by including a shell 1 and a measuring column. A cylindrical receiving cavity is provided inside the shell 1. The measuring column is sleeved in the receiving cavity of the shell 1. Limiting components are provided at both ends of the measuring column to limit and fix the measuring column.

[0031] like Figure 2 and Figure 4 As shown, the measuring column includes several sample columns 2, each with a through hole in the middle, and the sample columns 2 can be connected to each other along the central axis.

[0032] like Figure 2 and Figure 4 As shown, one end of the sample column 2 is provided with an annular groove, and the other end of the sample column 2 is connected to an annular locking post 21, which is used to engage with the annular groove.

[0033] like Figure 2 and Figure 4 As shown, the sample column 2 also has a groove at one end of the annular slot. The groove is located on the side near the through hole, and a sealing gasket is detachably connected inside the groove.

[0034] like Figure 2 and Figure 4 As shown, a filter screen 23 is connected to the bottom of sample column 2.

[0035] like Figure 2 and Figure 4 As shown, the measuring column also includes a liquid collecting hopper 4, which has a conical structure and a collection chamber inside. The end of the liquid collecting hopper 4 with a larger diameter is also connected to an annular retaining post 21.

[0036] like Figure 1 and Figure 2As shown, it also includes a sleeve 3, which is used to fit inside the receiving cavity of the outer shell 1. Several sliding grooves 31 are provided on the inner peripheral wall of the sleeve, and guide blocks 24 for sliding connection with the sliding grooves 31 are connected to the outer peripheral walls of the sample column 2 and the liquid collecting hopper 4.

[0037] Specifically, during the adsorption experiment, the sleeve 3 is inserted into the outer shell 1 beforehand to prevent contamination of the outer shell 1 and facilitate multiple experiments. The materials required for the experiment, such as anhydrous sodium sulfate and magnesium silicate, are placed into the sample column 2. The collecting hopper 4 can be slid into the bottom of the sleeve 3 first, and the guide block 24 on the collecting hopper 4 falls down along the groove 31 of the sleeve 3 by gravity. Preferably, there is a gap between the bottom surface of the groove 31 and the bottom surface of the sleeve 3 to ensure that the collecting hopper 4 will not slip off the sleeve 3 but stay at the bottom. Then, the required amount of sample column 2 is installed into the sleeve 3 in sequence. The installation method of the sample column 2 is the same as that of the collecting hopper 4, and will not be described again.

[0038] The materials required for the experiment can be added either before or after the sample column 2 is installed in the sleeve 3. Before installation: the required amount of sample column 2 can be placed on the experimental table, and one type of experimental material can be added to one sample column 2. The filter 23 inside the sample column 2 can prevent the experimental material from falling out, but can also allow the solution used for subsequent detection to permeate. This method can control the amount of experimental material used. After installation, the experimental material can be added, that is, first slide the sample column 2 into the sleeve 3, and then add the material with the help of a tool. Then add the sample column 2 and the corresponding material in sequence. It should also be noted that the diameter of the sample column 2 is smaller than the inner diameter of the sleeve 3, which makes it convenient to install or remove the sample column 2 with the help of a tool.

[0039] As the sample column 2 slides into the sleeve 3 one by one, the first sample column 2 that slides in is fixed to the collection hopper 4 by the annular groove and the annular post 21. The remaining sample columns 2 that fall into the sleeve 3 are also fixed to each other by the annular groove and the annular post 21 in sequence. When the solution is added into the sleeve 3, the solution gradually permeates through the multiple layers of experimental materials and gradually seeps into the collection chamber of the collection hopper 4 for collection and observation. Preferably, the collection hopper 4 can be opened with a leak at the bottom according to the experimental needs, and a beaker for collection can be placed at the bottom of the outer shell 1. A suitable collection hopper 4 can be selected as needed.

[0040] It should also be noted that a batch needs to undergo multiple experiments in order to detect and observe different experimental results under different conditions, such as different experiments with new and old sample columns 2, experiments after n-hexane is passed directly through sample column 2 without any reagents, comparative experiments of sample columns 2 after washing with experimental water and rinsing with n-hexane, experimental detection in different laboratories, and experiments with different water content of magnesium silicate, etc. In this embodiment, sample column 2 can be treated or have experimental materials added according to different experimental requirements before being assembled and installed in sleeve 3 for detection, which greatly improves the detection efficiency and convenience of the experiment.

[0041] Due to the diversity and continuity of the experiments, the experimental materials and solutions will only come into contact with the sample column 2. When the solution flows, there is a small probability that it will come into contact with the sleeve 3. Therefore, the contamination of the outer shell 1 by the experimental materials and solutions can be greatly avoided. Under different experiments, there is no need to replace the outer shell 1 and the sleeve 3, only the sample column 2 needs to be replaced.

[0042] Example 2: like Figures 2 to 4 As shown, a connecting cylinder 22 is fixedly connected to the bottom of the sample column 2, and a settling groove is provided at the top of the sample column 2. An external thread is provided on the outer peripheral wall of the connecting cylinder 22, and an internal thread is provided on the inner peripheral wall of the settling groove for threaded connection with the external thread of the connecting cylinder 22.

[0043] Specifically, in this embodiment, two adjacent sample columns 2 can be fixed by threaded connection, which has a better sealing and fixing effect than the snap-fit ​​of the annular snap-fit ​​column 21 and the annular snap-fit ​​groove in embodiment 1, and does not require the use of a sealing gasket; and when removing it later, all the sample columns 2 in the sleeve 3 can be removed together when the top sample column 2 is clamped.

[0044] Example 3: like Figure 1 As shown, a cover and a retaining ring 11 are slidably connected inside the receiving cavity of the outer shell 1.

[0045] A support platform is connected to the outer peripheral wall at the bottom of the outer casing 1.

[0046] Specifically, in the experiment of this embodiment, the outer shell 1 is first fixed on the experimental table by the support platform, and then the sleeve 3 is placed in. In this embodiment, the sliding groove 31 in the sleeve 3 can be completely penetrated. There is a notch in the outer shell 1 along the height direction. The cross-sectional shape of the outer shell 1 is C-shaped. The retaining ring 11 is slidably connected in the outer shell 1. The retaining ring 11 is used to fix the sleeve 3 and prevent the sleeve 3 from falling. After the liquid collecting hopper 4 is placed in the sleeve 3, the liquid collecting hopper 4 will also be limited by the hole of the retaining ring 11 to prevent slippage.

[0047] Preferably, when conducting multiple experiments as described in Example 1, the experiments can be carried out within the same sleeve 3 and outer shell 1. For example, in the experiment of observing and comparing sodium sulfate with different water contents, different amounts of sodium sulfate are needed each time, i.e., different amounts of sample columns 2. First, the collection hopper 4 used for the first experiment is placed at the bottom, then a certain number of sample columns 2 are placed in, followed by the solution, then a layer of empty sample columns 2 are placed in, and then the collection hopper 4 and sample columns 2 used for the second experiment are placed in. This method allows the results of two experiments to be observed and compared on the same sleeve 3.

[0048] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An adsorption device for determining petroleum-based substances in water, characterized in that, It includes a housing (1) and a measuring column. The housing (1) has a cylindrical cavity. The measuring column is fitted inside the cavity of the housing (1). Limiting components are provided at both ends of the measuring column to limit and fix the measuring column.

2. The adsorption device for determining petroleum-based substances in water according to claim 1, characterized in that: The measuring column includes several sample columns (2), each sample column (2) having a through hole in its middle, and the sample columns (2) can be connected to each other along the central axis.

3. The adsorption device for determining petroleum-based substances in water according to claim 2, characterized in that: One end of the sample column (2) is provided with an annular groove, and the other end of the sample column (2) is connected to an annular locking post (21), which is used to engage with the annular groove.

4. The adsorption device for determining petroleum-based substances in water according to claim 3, characterized in that: The sample column (2) also has a groove at one end of the annular slot, the groove is located on the side near the through hole, and a sealing gasket is detachably connected in the groove.

5. The adsorption device for determining petroleum-based substances in water according to claim 2, characterized in that: The bottom of the sample column (2) is fixedly connected to a connecting cylinder (22), and a settling groove is provided at the top of the sample column (2). The outer peripheral wall of the connecting cylinder (22) is provided with an external thread, and the inner peripheral wall of the settling groove is provided with an internal thread for threaded connection with the external thread of the connecting cylinder (22).

6. The adsorption device for determining petroleum-based substances in water according to claim 2, characterized in that: The measuring column also includes a liquid collecting hopper (4), which has a conical structure and a collection chamber inside. The end of the liquid collecting hopper (4) with a larger diameter is also connected to an annular locking post (21).

7. The adsorption device for determining petroleum-based substances in water according to claim 6, characterized in that: It also includes a sleeve (3), which is used to fit inside the receiving cavity of the outer shell (1). Several sliding grooves (31) are provided on the inner peripheral wall of the sleeve. Guide blocks (24) for sliding connection with the sliding grooves (31) are connected to the outer peripheral walls of the sample column (2) and the liquid collecting hopper (4).

8. The adsorption device for determining petroleum-based substances in water according to claim 2, characterized in that: A filter screen (23) is connected to the bottom of the sample column (2).

9. The adsorption device for determining petroleum-based substances in water according to claim 1, characterized in that: The housing (1) is slidably connected to a cover and a retaining ring (11).

10. The adsorption device for determining petroleum-based substances in water according to claim 1, characterized in that: A support platform is connected to the outer peripheral wall at the bottom of the outer shell (1).

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