A device for adding fixative to on-site water quality samples

Abstract

The utility model belongs to the technical field of environmental monitoring, and provides an on-site water quality sample fixative adding device, including: a box body, which is provided with a plurality of reagent bottles for storing different liquid fixatives, and a plurality of liquid injection components; a box door, the inner side of which is provided with a storage box, and the storage box is provided with a plurality of accommodating chambers for storing different solid fixatives, and the accommodating chamber includes a main chamber, an intersection chamber, and a plurality of branch chambers that are connected; wherein the upper end of the intersection chamber is connected to the main chamber, and the lower end is connected to a plurality of branch chambers, and the volumes of the plurality of branch chambers are different, so as to quantitatively take solid fixatives of different specifications. The on-site water quality sample fixative adding device provided by the utility model is simple to use and convenient to operate, and can realize the quantitative addition of liquid and solid fixatives, effectively improve the sample processing efficiency, and can avoid the contact between the corrosive fixative and the operator during the operation, thereby ensuring the safety of the operator.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental monitoring, and particularly relates to an on-site water quality sample fixative adding device. Background Art

[0002] After water quality sampling is carried out at the water pollution prevention and control site in environmental monitoring, the water quality samples are usually pre-treated, and then the treated samples are tested for corresponding items, such as conductivity, dissolved oxygen content, chemical oxygen demand, permanganate index, etc. At present, it is usually necessary to add a fixative during the pre-treatment of water quality samples. The fixative includes liquid fixatives: such as sulfuric acid solution, hydrochloric acid solution, nitric acid solution, phosphoric acid solution, sodium hydroxide solution, zinc acetate solution, etc., and solid granular fixatives: such as solid copper sulfate, solid sodium hydroxide, etc. Since the added fixative is generally a highly corrosive reagent, the traditional method generally packs the fixative in a reagent bottle in advance, and then carries it to the site and adds it using a dropper, pipette or pipette. However, due to the complex outdoor environment, it is difficult for operators to add fixatives on site, which seriously affects the sample processing efficiency of operators. In addition, during outdoor field operations, it is difficult to quantitatively take the fixative. On the one hand, there is a risk of contaminating the reagent, which affects the accuracy of the test results. On the other hand, there is a risk of operators contacting corrosive reagents, which endangers the personal safety of operators.

[0003] Therefore, it is necessary to design an on-site water quality sample fixative adding device that is easy to operate, highly safe, and can quantitatively add fixative. Summary of the invention

[0004] In order to solve the above technical problems, the utility model proposes an on-site water quality sample fixative adding device, which is simple to use and convenient to operate, can realize the quantitative addition of liquid and solid fixatives, effectively improve the sample processing efficiency, and can avoid the contact between corrosive fixatives and operators during operation, thereby ensuring the safety of operators.

[0005] The technical solution of the utility model is:

[0006] The utility model provides an on-site water sample fixative adding device, comprising:

[0007] A box body, wherein a plurality of reagent bottles for storing different liquid fixatives and a plurality of liquid injection components respectively connected to the reagent bottles are arranged in the box body;

[0008] A box door, the box door is movably hinged to the box body, a storage box is arranged inside the box, and a plurality of accommodating chambers for storing different solid fixatives are arranged inside the storage box, and the accommodating chambers include a main chamber, a junction chamber, and a plurality of branch chambers that are interconnected;

[0009] The upper end of the intersection chamber is connected to the main chamber, and the lower end is connected to a plurality of branch chambers, and the volumes of the branch chambers are different so as to quantitatively take solid fixatives of different specifications.

[0010] Preferably, a rotatable rotating column is provided inside the intersection chamber, and the rotating column is provided with a radially penetrating material hole for connecting the main chamber and the different branch chambers;

[0011] The rotating column moves through the storage box.

[0012] Preferably, a matching holding container is disposed inside the branch chamber, and the holding container movably passes through the storage box.

[0013] Preferably, the cross section of the main chamber is open-mouthed, wider at the top and narrower at the bottom, and the intersection chamber is connected to the narrow end of the main chamber.

[0014] Preferably, a covering plate located above the storage box is further provided on the inner side of the box door, and the covering plate is movably connected to the box door.

[0015] Preferably, the injection assembly comprises a liquid guide tube and an injection pump connected to each other;

[0016] One end of the liquid guide tube is inserted into the reagent bottle, and the other end is provided with an injection head. The injection pump is any one of a pressing pump, a peristaltic pump, and a diaphragm pump.

[0017] Preferably, the bottom wall of the box body is provided with a holder adapted to the reagent bottle, and the box body is also provided with a clamping plate clamped on the body of the reagent bottle and a covering plate covering the mouth of the reagent bottle.

[0018] Preferably, the storage box is also provided with a pH test paper box connected thereto, and the pH test paper box is a waterproof test paper box.

[0019] Compared with the prior art, the utility model has the following advantages and effects:

[0020] (1) A box body is provided with a plurality of reagent bottles and a plurality of liquid injection components connected thereto. The plurality of reagent bottles can be used to place a variety of different liquid fixatives, thereby meeting different water quality sample testing requirements and facilitating on-site addition of water quality sample fixatives. The independent liquid injection components can realize quantitative addition of different fixatives while avoiding contamination of the fixatives, thereby effectively ensuring the accuracy of the test results;

[0021] (2) A receiving chamber including several branch chambers with different volumes is used to quantitatively take and add solid granular fixatives through the branch chambers with different volumes, which saves the operator's measuring steps, thereby improving the sample processing efficiency and avoiding the distortion of the test results caused by the error in the amount of fixative added. In addition, several receiving chambers are provided to store different solid fixatives, and multiple fixatives can be stored and transported at the same time, thereby improving convenience and practicality;

[0022] (3) By using material holes that radially penetrate the rotating column, the rotating column is rotated so that the material holes correspond to different branch chambers, thereby realizing the connection between the main chamber and different branch chambers, and then taking different rated amounts of solid fixatives in branch chambers of different volumes to complete the quantitative taking and adding of solid fixatives. It is simple and convenient to use, and can avoid contact between operators and fixatives, thereby ensuring the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the on-site water quality sample fixative adding device in Example 1 of the utility model;

[0024] Figure 2 This is another structural schematic diagram of the on-site water quality sample fixative adding device in Example 1 of the utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the box in the on-site water quality sample fixative adding device in Example 1 of the utility model;

[0026] Figure 4 It is a top view of the box in the on-site water sample fixative adding device in Example 1 of the utility model;

[0027] Figure 5 for Figure 4 Sectional view at position AA;

[0028] Figure 6 for Figure 4 Sectional view at the middle position BB;

[0029] Figure 7 It is a schematic diagram of the explosion structure of the box door in the on-site water quality sample fixative adding device in Example 1 of the utility model;

[0030] Figure 8 This is a schematic diagram of the internal structure of the storage box in the on-site water quality sample fixative adding device in Example 1 of the utility model;

[0031] Fig. 9 This is a schematic diagram of the structure of the rotating column in the on-site water quality sample fixative adding device in Example 1 of the utility model.

[0032] Figure numerals: 1. Box body; 11. Reagent bottle; 12. Liquid injection assembly; 121. Liquid guide tube; 122. Liquid injection pump; 123. Liquid injection head; 124. Flow knob; 13. Card seat; 14. Card limit plate; 15. Cover plate; 151. Sealing protrusion; 2. Box door; 21. Cover plate; 211. Sealing block; 3. Storage box; 31. Receiving chamber; 311. Main chamber; 312. Intersection chamber; 313. Branch chamber; 32. Opening; 4. Rotating column; 41. Material hole; 5. Holding container; 6. pH test paper box. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the present invention is now further described in conjunction with specific implementation methods.

[0034] Embodiment 1:

[0035] like Figure 1 to Figure 9 As shown, the utility model provides an on-site water quality sample fixative adding device, which includes a box body 1 and a box door 2 movably connected thereto. It should be noted that a locking mechanism (not shown in the figure) is arranged between the box door 2 and the box body 1 to ensure that the box door 2 is tightly closed during transportation, such as a locking structure or a magnetic attraction structure. In view of the mature prior art in this field, it will not be described in detail here.

[0036] like Figure 3 As shown, a plurality of reagent bottles 11 for storing different liquid fixatives and a plurality of liquid injection components 12 respectively connected to the reagent bottles 11 are arranged in the box body 1. Specifically, eight reagent bottles 11 and eight independent liquid injection components 12 are taken as examples in this embodiment. The reagent bottles 11 respectively store sulfuric acid solution, hydrochloric acid solution, nitric acid solution, phosphoric acid solution, 0.2 g / L and 40 g / L sodium hydroxide solution, zinc acetate-sodium acetate solution, and magnesium carbonate suspension.

[0037] Combination Figure 4 , Figure 5 , Figure 6As shown, the injection assembly 12 includes a connected liquid guide tube 121 and a liquid injection pump 122. One end of the liquid guide tube 121 is inserted into the reagent bottle 11, and the other end is provided with a liquid injection head 123. The liquid guide tube 121 is a rubber hose resistant to acid and alkali corrosion. The liquid injection pump 122 is any one of a manual press pump head, a micro peristaltic pump, and a micro diaphragm pump, which can accurately control the flow rate of the injected liquid fixative. Specifically, in this embodiment, the liquid injection pump 122 is a micro peristaltic pump as an example, and the outer wall of the box 1 is provided with a flow knob 124 connected to the micro peristaltic pump. In addition, the sample bottle fixative addition injection process (forward rotation) and the liquid fixative addition process (reverse rotation) in the reagent bottle 11 can be realized by the forward and reverse rotation of the peristaltic pump, so that the liquid fixative does not need to be added manually, and the corrosion risk caused by the direct contact between the fixative and the human body is effectively avoided. It should be noted that the micro peristaltic pump in this embodiment is powered by a built-in mobile power supply (not shown in the figure). In view of the mature prior art in this field, it is not repeated here one by one.

[0038] Optionally, in some embodiments, the end of the injection head 123 can be detachably connected to the injection tube so that the liquid fixative can be injected into the sample bottle containing the water sample, effectively avoiding splashing of the liquid fixative. At the same time, the contamination between different samples can be avoided by replacing the injection tube. The injection tube is also a rubber hose resistant to acid and alkali corrosion.

[0039] like Figure 3 , Figure 5 , Figure 6 As shown, a holder 13 adapted to the reagent bottle 11 is provided on the inner bottom wall of the box body 1, and a limiting plate 14 which is inserted into the body of the reagent bottle 11 and a cover plate 15 which is provided at the mouth of the reagent bottle 11 are also provided in the box body 1. Specifically, the holder 13 is provided with a fixing groove adapted to the bottom of the reagent bottle 11, and a plurality of sealing protrusions 151 adapted to the mouth of the reagent bottle 11 are provided on the lower end surface of the cover plate 15. The cover plate 15 is a plastic plate resistant to acid and alkali corrosion. The setting of the limiting plate 14 and the holder 13 can effectively ensure the stability of the placement of the reagent bottle 11 and prevent the reagent bottle 11 from tipping over and overturning.

[0040] Optionally, buffer sponges or buffer foams are provided at the contact points between the holder 13, the limiting plate 14 and the reagent bottle 11 to prevent the reagent bottle 11 from being damaged due to bumps and collisions of the box body 1 during transportation. The cover plate 15 is detachably connected to the box body 1, and the cover plate 15 is provided with a pressure relief hole connected to the reagent bottle 11 to ensure the normal discharge and injection of the liquid fixative.

[0041] like Figure 1 , Figure 2 As shown, the box door 2 is movably hinged to the box body 1 , a storage box 3 for storing solid fixatives and a cover plate 21 covering the storage box 3 are arranged inside the box door 2 , and the cover plate 21 is movably hinged to the box door 2 .

[0042] Combination Figure 7 , Figure 8 As shown, the storage box 3 is provided with a plurality of accommodating chambers 31 for storing different solid fixatives. In this embodiment, the storage box 3 is provided with two independent accommodating chambers 31, which are respectively used to store solid granular copper sulfate and solid granular strong sodium oxide. The accommodating chamber 31 includes a main chamber 311, a junction chamber 312, and three branch chambers 313, wherein the cross section of the main chamber 311 is an open shape with a wide top and a narrow bottom, the junction chamber 312 is connected to the main chamber 311 at the upper end, and is connected to the branch chamber 313 at the lower end, and a rotatable rotating column 4 is provided in the junction chamber 312, as shown in FIG. Figure 7 , Fig. 9 As shown, the rotating column 4 is vertically embedded in the intersection chamber 312, and is provided with a material hole 41 that penetrates radially. There are three branch chambers 313, and they are all connected with the intersection chamber 312 above. By rotating the rotating column 4, the main chamber 311 is connected to different branch chambers 313 through the material hole 41, so that the solid fixative flows into different branch chambers 313, as shown in FIG. Figure 7 , Figure 8 As shown, the three branch chambers 313 have different volumes, and each of them is provided with a corresponding containing container 5 .

[0043] like Figure 7 As shown, the holding container 5 and the rotating column 4 are movable and penetrate the side wall of the storage box 3. The storage box 3 is a transparent box body, and the quantitative storage and withdrawal of the solid fixative can be observed in real time. Specifically, the rotating column 4 can be rotated to the corresponding branch chamber 313. At this time, the main chamber 311 is connected with the corresponding branch chamber 313, and the solid granular fixing agent in the main chamber 311 flows into the holding container 5 in the branch chamber 313 through the material hole 41 of the rotating column 4. After the fixing agent fills the holding container 5, the rotating column 4 is rotated to make its material hole 41 separate from the main chamber 311 and the branch chamber 313, forming a blocked isolation state. The operator draws out the holding container 5 and adds the quantitative fixing agent in the holding container 5 to the sample bottle.

[0044] Two openings 32 communicating with the accommodating chamber 31 are arranged above the storage box 3, and a sealing block 211 adapted to the opening 32 is arranged on the lower end surface of the cover plate 21, so that the solid fixative in the accommodating chamber 31 can be supplemented and added through the opening 32. The side wall of the storage box 3 is also provided with a pH test paper box 6 connected thereto, and the pH test paper box 6 is a waterproof test paper box, so as to qualitatively measure whether the water quality sample after the addition of the fixative reaches a predetermined pH range.

[0045] Optionally, in some embodiments, the pH test paper box 6 is detachably embedded in the side wall of the storage box 3 to facilitate use and replacement of the pH test paper box 6 .

[0046] In summary, the on-site water quality sample fixative adding device provided by the utility model is simple to use and easy to operate, can realize the quantitative addition of liquid and solid fixatives, effectively improve the sample processing efficiency, and can avoid the contact between corrosive fixatives and operators during operation, thereby ensuring the safety of operators.

[0047] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A device for adding a fixative to an on-site water sample, characterized in that: include: A box body (1), wherein a plurality of reagent bottles (11) for storing different liquid fixatives and a plurality of liquid injection components (12) respectively connected to the reagent bottles (11) are arranged inside the box body (1); A box door (2), the box door (2) being movably hinged to the box body (1), a storage box (3) being arranged inside the box door, a plurality of accommodating chambers (31) for storing different solid fixatives being arranged inside the storage box (3), the accommodating chamber (31) comprising a main chamber (311), a junction chamber (312), and a plurality of branch chambers (313) which are interconnected; The upper end of the intersection chamber (312) is connected to the main chamber (311), and the lower end is connected to a plurality of branch chambers (313), and the volumes of the plurality of branch chambers (313) are different so as to quantitatively take solid fixatives of different specifications.

2. The on-site water quality sample fixative adding device according to claim 1, characterized in that: A rotatable rotating column (4) is arranged inside the intersection chamber (312), and the rotating column (4) is provided with a material hole (41) penetrating radially, so as to connect the main chamber (311) and the different branch chambers (313); The rotating column (4) movably passes through the storage box (3).

3. The on-site water quality sample fixative adding device according to claim 1, characterized in that: A receiving container (5) adapted thereto is disposed inside the branch chamber (313), and the receiving container (5) movably passes through the storage box (3).

4. The on-site water quality sample fixative adding device according to claim 1, characterized in that: The cross section of the main chamber (311) is in an open shape that is wide at the top and narrow at the bottom, and the intersection chamber (312) is connected to the narrow end of the main chamber (311).

5. The on-site water quality sample fixative adding device according to claim 1, characterized in that: A cover plate (21) located above the storage box (3) is also provided on the inner side of the box door (2), and the cover plate (21) is movably connected to the box door (2).

6. The on-site water quality sample fixative adding device according to claim 1, characterized in that: The liquid injection assembly (12) comprises a liquid guide tube (121) and a liquid injection pump (122) connected to each other; One end of the liquid guide tube (121) is inserted into the reagent bottle (11), and the other end is provided with a liquid injection head (123); the liquid injection pump (122) is any one of a pressing pump, a peristaltic pump, and a diaphragm pump.

7. The on-site water sample fixative adding device according to claim 1, characterized in that: The inner bottom wall of the box body (1) is provided with a holder (13) adapted to the reagent bottle (11), and the box body (1) is also provided with a retaining plate (14) for retaining the body of the reagent bottle (11), and a cover plate (15) for covering the mouth of the reagent bottle (11).

8. The on-site water sample fixative adding device according to claim 1, characterized in that: The storage box (3) is also provided with a pH test paper box (6) connected thereto, and the pH test paper box (6) is a waterproof test paper box.

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