Auxiliary device for sample extraction

Abstract

The utility model discloses an auxiliary device for sample extraction. The auxiliary device comprises a bracket, the containers are arranged on the support at intervals, each container has a first height, and a liquid outlet is formed in the bottom end of each container; each hose is arranged between the two containers, and the hoses are communicated with the two adjacent containers; and the control valve is arranged at the liquid outlet and is used for controlling the liquid outlet to be opened or closed. According to the device disclosed by the embodiment of the utility model, the solvent can be quickly, conveniently and efficiently taken in batches. And a bottle opening liquid separator is not needed any more, so that the loss of the bottle opening liquid separator is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sampling, and in particular relates to a sample extraction auxiliary device. Background Art

[0002] With the increasing testing needs of environmental laboratories, dioxins that affect the environment have become one of the more important testing items. However, before testing such substances, pre-treatment is required, which is relatively complicated, time-consuming and labor-intensive.

[0003] The classic Soxhlet extraction method is one of the main methods for extracting dioxin samples. In the daily sample extraction process, a bottle-mouth dispenser with a range of 0-25ml is required to take a certain amount of toluene solvent. Usually about 4800ml of toluene solvent is required for each batch. In the process of using a bottle-mouth dispenser to extract toluene solvent, frequent up and down pumping will cause certain losses to the bottle-mouth dispenser, which will lead to many problems. For example, solvent leakage will occur at the threaded interface, and even the bottle-mouth dispenser will be scrapped; the bottle-mouth dispenser cannot completely extract the solvent, resulting in solvent waste; when extracting the solvent, air leakage will occasionally occur. In addition, due to the small range of 0-25ml, each sample needs to be extracted at least 12 times, which is not only inefficient. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a sample extraction auxiliary device, which can solve the problems of loss of the bottle mouth dispenser due to frequent up and down pumping of the solution during the pre-treatment process when detecting the substance to be tested, as well as low efficiency.

[0005] The present invention provides a sample extraction auxiliary device, comprising:

[0006] Bracket;

[0007] A container, the container is placed on the support, the container has a first height, and a liquid outlet is provided at the bottom end of the container;

[0008] A plurality of hoses, each of which is disposed between two containers, and the hoses are connected to two adjacent containers;

[0009] A control valve is arranged at the liquid outlet and is used to control the opening or closing of the liquid outlet.

[0010] According to an embodiment of the present invention, the hose is connected along the container from the bottom end of the container to a second height, and the second height is smaller than the height of the top opening of the container.

[0011] According to an embodiment of the present invention, the container is a polytetrafluoroethylene column, and the diameter of the polytetrafluoroethylene column is 30-70 mm.

[0012] According to an embodiment of the present invention, the first height is 170-250 mm.

[0013] According to one embodiment of the present invention, the second height is 120-165 mm.

[0014] According to an embodiment of the utility model, the hose is a polytetrafluoroethylene hose.

[0015] According to an embodiment of the present utility model, the control valve is a polytetrafluoroethylene control valve.

[0016] According to one embodiment of the utility model, the bracket comprises:

[0017] Base;

[0018] A support frame is fixed on the base, and a mounting hole is provided on the support frame. The container passes through the mounting hole and is fixed on the support frame.

[0019] According to an embodiment of the present invention, the sample extraction auxiliary device further includes: a plurality of receivers, each of the receivers being arranged correspondingly at the outlet at the bottom end of the container for receiving the liquid flowing out of the container.

[0020] The device of the embodiment of the utility model has at least the following effects:

[0021] According to the sample extraction auxiliary device of the embodiment of the utility model, by setting the bracket, container, hose and control valve, and the connection relationship between the various components, it can be realized that after extracting the unwanted extract once, the single receiving bottle can be packaged through the control valve. The whole process is simple and convenient to operate, and batch solvent extraction is realized, which greatly improves the efficiency of solvent extraction, no longer relies on the liquid dispenser, and avoids damage to the liquid dispenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a sample extraction auxiliary device according to an embodiment of the utility model.

[0023] Attached photos

[0024] Sample extraction auxiliary device 100;

[0025] Bracket 10; base 11; support frame 12; mounting hole 13;

[0026] Container 20;

[0027] Hose 30;

[0028] Control valve 40;

[0029] Receiver 50. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The specific structure and working principle of the sample extraction auxiliary device 100 according to the embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0032] refer to Figure 1 , Figure 1 The schematic structural diagram of the sample extraction auxiliary device 100 according to an embodiment of the utility model is exemplarily shown.

[0033] like Figure 1 , including a bracket 10, a plurality of containers 20, a plurality of hoses 30 and a control valve.

[0034] Among them, a plurality of containers 20 are arranged on the support 10 at intervals, the containers 20 have a first height, and the bottom end of the container 20 is provided with a liquid outlet. Figure 1 An opening is provided at the position of the opening of the container 20 (above the container 20), and a hose 30 is provided between each two containers 20. The hose 30 is connected to the openings on the containers 20 on both sides, so as to connect the two containers 20. Figure 1 A control valve is provided below the container 20 shown in the figure, and the liquid outlet at the bottom of the container 20 is controlled to be opened or closed by the control valve.

[0035] In the actual operation process, first, the liquid outlet of the container 20 is closed by the control valve at the bottom of each container 20, and then the middle container 20 is selected, and the toluene reagent is poured into the container 20 from the liquid inlet at the top of the middle container 20. When the added toluene reagent reaches the opening of the connection of the hose 30, the solvent can flow into other containers 20 on both sides through the hose 30 under the action of pressure, and the amount of solvent in each container 20 can be equal. The solvent liquid level in each container 20 stops pouring the solvent when it reaches the opening of the hose 30, and the control valve is opened, and the solvent can be flowed into the receiving bottle formulated, for example, in a round-bottomed flask. Thereby realizing fast, convenient and efficient, batch taking of solvent, and no longer relying on the bottle mouth liquid dispenser, avoiding the loss of the bottle mouth liquid dispenser. In addition, the structure of the device is simple, and only needs to manually operate the control valve and add solvent in a container 20 in operation, and the operation is very simple and convenient.

[0036] In one embodiment of the present application, the container 20 may be a polytetrafluoroethylene column, and the hose 30 may be a polytetrafluoroethylene hose 30. This material is resistant to acid, alkali, and various organic solvents, and is almost insoluble in all solvents, which can better protect the solvent components from being destroyed to ensure the accuracy of the detection.

[0037] In some embodiments, the inner diameter of the polytetrafluoroethylene column can be 30-70 mm, for example, 30 mm, 40 mm, 50 mm, and 60 mm, and its height (first height) can be 170-250 mm, for example, 180 mm, 190 mm, 200 mm, 210 mm, 220 mm, 230 mm, and 240 mm, etc. This size can meet the needs of conventional detection. In some embodiments, the size can also be adjusted according to the needs.

[0038] In other embodiments, the height of the connection opening of the hose 30 (the second height) can be 120-165 mm, for example, 130 mm, 140 mm, 150 mm, 155 mm and 160 mm, etc. This height needs to be lower than the height of the top opening of the polytetrafluoroethylene column to avoid solvent overflow.

[0039] In the embodiment of the present utility model, the control valve 40 may be a polytetrafluoroethylene control valve to avoid reaction with the solvent, damage to the control valve 40 , and influence on the purity of the solvent.

[0040] In some embodiments, Figure 1 As shown, the bracket 10 includes a base 11 and a support frame 12. The support frame 12 is fixed on the base 11, and a mounting hole 13 is provided on the support frame 12. The container 20 passes through the mounting hole 13 and is fixed on the support frame 12. This structure can make the container 20 more firmly fixed on the bracket 10, and the bracket 10 can also be stably placed on a desktop or a supporting object.

[0041] In some embodiments, the bracket 10 may be a stainless steel bracket 10, which is a material that is not easily corroded, strong, and not easily damaged.

[0042] like Figure 1 As shown, the sample extraction auxiliary device 100 further includes a plurality of receivers 50 , for example, a round-bottom flask with a volume of 500 ml. Each receiver 50 is correspondingly arranged at the outlet of the bottom end of the container 20 to receive the solvent flowing out of the container 20 .

[0043] In summary, the sample extraction auxiliary device 100 of the embodiment of the utility model has a simple structure and can realize rapid, convenient and efficient batch use of solvents. It no longer relies on the bottle mouth dispenser, thus avoiding the loss of the bottle mouth dispenser. It is simpler and more convenient to operate, can save manpower, and improve detection efficiency.

[0044] It can be understood that in the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "horizontal", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] It can be understood that in the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "connection", "communication", "connected", "connection" and "fitting" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal communication of two elements; it can be directly connected or indirectly connected through an intermediate medium; "fitting" can be the fit between surfaces, or the fit between points and surfaces or lines and surfaces, and also includes the fit between holes and axes. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. A sample extraction auxiliary device, characterized in that: include: Bracket; Containers, the containers are arranged on the bracket at intervals, the containers have a first height, and the bottom of the containers is provided with a liquid outlet; A plurality of hoses, each of which is disposed between two containers, and the hoses are connected to two adjacent containers; A control valve is arranged at the liquid outlet and is used to control the opening or closing of the liquid outlet.

2. The sample extraction auxiliary device according to claim 1, characterized in that: The hose is connected from the bottom end of the container along the container to a second height, and the second height is smaller than the height of the top end opening of the container.

3. The sample extraction auxiliary device according to claim 2, characterized in that: The container is a polytetrafluoroethylene column, and the diameter of the polytetrafluoroethylene column is 30-70 mm.

4. The sample extraction auxiliary device according to claim 3, characterized in that: The first height is 170-250 mm.

5. The sample extraction auxiliary device according to claim 2, characterized in that: The second height is 120-165 mm.

6. The sample extraction auxiliary device according to claim 1, characterized in that: The hose is a polytetrafluoroethylene hose.

7. The sample extraction auxiliary device according to claim 1, characterized in that: The control valve is a polytetrafluoroethylene control valve.

8. The sample extraction auxiliary device according to claim 1, characterized in that: The bracket includes: Base; A support frame is fixed on the base, and a mounting hole is provided on the support frame. The container passes through the mounting hole and is fixed on the support frame.

9. The sample extraction auxiliary device according to claim 1 or 2, characterized in that: Also includes: A plurality of receivers, each of which is disposed at an outlet at the bottom end of the container and is used to receive liquid flowing out of the container.

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