Automatic sample concentration device

Abstract

The utility model relates to the technical field of water ecology research, in particular to an automatic sample concentration device. The automatic sample concentration device comprises a case, a concentration barrel, a liquid suction device, a suction pipe and a sample bottle, a case cover is arranged at the top of the case, the concentration barrel is arranged in the case, the suction pipe is vertically arranged at the lower end of the case cover, the lower end of the suction pipe extends into the concentration barrel from top to bottom, and the liquid suction device is arranged in the case cover. The liquid suction device is connected and communicated with the upper end of the suction pipe, a sample discharge port with an electric control valve is formed in the bottom wall of the concentration barrel, the sample bottle is arranged below the sample discharge port, and a sampling port for taking out the sample bottle is formed in the side wall of the case. The device has the advantages that the structural design is simple and reasonable, the subsequent concentration operation process can be simplified on the premise of realizing natural precipitation and concentration of a sample, the detection efficiency is improved, and the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery and equipment, in particular to an automatic sample concentrating device. Background Art

[0002] At present, when conducting research on water ecology (such as rivers, lakes, seas, reservoirs, fish ponds, etc.), it is generally necessary to sample the area and conduct a series of research and analysis on the sampled samples (this process includes concentrating the samples).

[0003] Existing concentration devices mostly use centrifugal separation to concentrate water samples. Compared with the natural sedimentation method, the concentration rate error is larger. The siphon process of the traditional natural sedimentation concentration method is too cumbersome to operate manually. If the sample is accidentally vibrated during the operation, the whole method will fail.

[0004] Based on this, it is necessary to develop a new sample concentration device based on the natural precipitation method to improve the defects of the existing natural precipitation method concentration related operations. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a sample automatic concentration device, which effectively overcomes the defects of the prior art.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] An automatic sample concentration device comprises a case, a concentration barrel, a liquid suction device, a straw and a sample bottle. The case is provided with a case cover on the top, the concentration barrel is installed in the case, the straw is vertically arranged at the lower end of the case cover, and the lower end of the straw extends from top to bottom into the concentration barrel, the liquid suction device is connected and communicated with the upper end of the straw, the bottom wall of the concentration barrel is provided with a sample discharge port with an electric control valve, the sample bottle is arranged below the sample discharge port, and the side wall of the case is provided with a sampling port for taking out the sample bottle.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the liquid suction device is a water pump, and the liquid inlet end of the water pump is connected to the suction tube via a pipeline.

[0010] Furthermore, a controller with a display is provided on the chassis, and the water pump and the electric control valve are respectively connected to the controller.

[0011] Furthermore, an electric lifting device is connected to the upper end of the box cover, and the electric lifting device is installed on the side wall of the chassis through a connecting arm. The electric lifting device is used to drive the box cover to drive the straw to move up and down relative to the concentration barrel, and the electric lifting device is connected to the controller.

[0012] Furthermore, a bracket is provided on the inner bottom wall of the above-mentioned concentration barrel, and a magnetic stirrer connected to the above-mentioned controller is provided on the upper end of the above-mentioned bracket.

[0013] Furthermore, the above-mentioned concentration barrels are provided in plurality, and correspondingly, the above-mentioned suction pipes are provided in plurality and are distributed one-to-one correspondingly to the above-mentioned concentration barrels.

[0014] Furthermore, a mounting frame is provided on the bottom wall of the chassis, and a placement plane is provided on the upper end of the mounting frame. A positioning groove corresponding to the concentration barrel is provided on the placement plane. A through hole is provided through the positioning groove corresponding to the position of the sample discharge port, and the sample bottle is arranged in the mounting frame.

[0015] Furthermore, the sampling port is provided at the lower end of the side wall of the chassis corresponding to the position of the sample bottle.

[0016] Furthermore, the plurality of concentration barrels are distributed in an annular manner at intervals, and the sampling ports are provided at the lower portion of the side wall of the chassis corresponding to the position of each of the sample bottles.

[0017] Furthermore, the liquid suction device is installed in the middle of the lower end of the box cover and is connected to a water tank.

[0018] The beneficial effects of the utility model are: the structural design is simple and reasonable, and the subsequent concentration operation process can be simplified under the premise of realizing natural precipitation and concentration of the sample, thereby improving the detection efficiency and ensuring the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the automatic sample concentration device of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the automatic sample concentration device of the utility model;

[0021] Figure 3 This is a distribution diagram of multiple concentration barrels in the automatic sample concentration device of the utility model in the chassis;

[0022] Figure 4 It is a schematic diagram of the structure of a single concentration barrel in the automatic sample concentration device of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Chassis; 2. Concentration barrel; 3. Pipette; 4. Sample bottle; 5. Magnetic stirrer; 6. Mounting rack; 11. Box cover; 12. Sampling port; 21. Sample discharge port; 22. Electric lifting device. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] Example: Figure 1 , 2 As shown, the automatic sample concentration device of this embodiment includes a chassis 1, a concentration barrel 2, a liquid suction device, a pipette 3 and a sample bottle 4. The top of the chassis 1 is provided with a box cover 11, the concentration barrel 2 is installed in the chassis 1, the pipette 3 is vertically arranged at the lower end of the box cover 11, and the lower end thereof extends from top to bottom into the concentration barrel 2, the liquid suction device is connected and communicated with the upper end of the pipette 3, the bottom wall of the concentration barrel 2 is provided with a sample discharge port 21 with an electric control valve, the sample bottle 4 is arranged below the sample discharge port 21, and the side wall of the chassis 1 is provided with a sampling port 12 for taking out the sample bottle 4.

[0027] The concentration process is as follows:

[0028] First, open the box cover 11, add sample liquid to the concentration barrel 2, then cover the box cover 11, ensure that the lower end of the pipette 3 is below the sample liquid level in the concentration barrel 2, and after natural precipitation for a certain period of time, start the liquid suction device to extract the upper clear liquid in the concentration barrel 2 after precipitation to a suitable liquid level, then control the electric control valve to open the sample discharge port 21, and the concentrated sample flows out through the sample discharge port 21 and enters the sample bottle 4 below, and finally take out the sample bottle 4 from the sampling port 12. The whole process only requires adding sample liquid in the early stage and taking out the sample bottle 4 in the later stage. The natural precipitation and drainage in the middle do not require manual participation, which ensures the good realization of the natural precipitation concentration process, simplifies the operation process, and does not cause sample vibration during the precipitation process. Its overall structural design is simple and reasonable, the concentration efficiency is high, and the concentration process is simple and stable.

[0029] As a preferred embodiment, the liquid suction device is a water pump, and the liquid inlet end of the water pump is connected to the suction tube 3 through a pipeline.

[0030] In the above embodiment, the liquid suction device can be a conventional water pump of an adapted type. After being started, the upper clear liquid after precipitation in the concentration barrel 2 is sucked out through the suction pipe 3 .

[0031] As a preferred embodiment, a controller with a display is provided on the chassis 1, and the water pump and the electric control valve are respectively connected to the controller.

[0032] In the above embodiment, the display is arranged at a conspicuous position on the outer surface of the chassis 1, and the display screen adopts a key-type or touch-screen, and control instructions can be input on the display, thereby achieving good control of the water pump and the electric control valve.

[0033] As a preferred embodiment, Figure 1As shown, the upper end of the box cover 11 is connected to an electric lifting device 22, and the electric lifting device 22 is installed on the side wall of the chassis 1 through a connecting arm A. The electric lifting device 22 is used to drive the box cover 11 to drive the straw 3 to move up and down relative to the concentration barrel 2, and the electric lifting device 22 is connected to the controller.

[0034] In the above implementation scheme, the electric lifting device 22 is used to control the box cover 11 to drive the pipette 3 to rise and fall, thereby controlling the liquid level in the concentration barrel 2. Specifically, the electric lifting device 22 is connected to the controller to realize overall automated concentration: after determining the initial sample volume and the concentration multiple, the relevant parameters are input into the display and the controller, and the controller will automatically obtain the remaining sample volume after concentration and the corresponding water level. Since the sample liquid level initially added to the concentration barrel 2 is a fixed value, the distance between the pipette 3 and the bottom wall of the concentration barrel 2 when the box cover 11 is closed is also a fixed value. Therefore, the electric lifting device 22 drives the pipette 3 to rise while sucking until the lower end of the pipette 3 is separated from the liquid surface. Under the conditions of the lifting rate of the pipette 3 and the power setting of the liquid suction device, when the pipette 3 is separated from the water level, the sample bottle in the concentration barrel 2 meets the concentration requirement, and the liquid suction device will stop working (that is, the electric lifting device 22 drives the box cover 11 and the pipette 3 to rise to control the liquid level of the sample after concentration). After that, the electric control valve on the bottom wall of the concentration barrel 2 is opened, and the sample flows downward into the sample bottle 4 through the sample discharge port 21.

[0035] In this embodiment, the connecting arm includes a vertical section and a horizontal section, and the lower end of the vertical section is connected to the chassis 1

[0036] As a preferred embodiment, Figure 4 As shown, a bracket is provided on the inner bottom wall of the above-mentioned concentration barrel 2, and a magnetic stirrer 5 connected to the above-mentioned controller is provided on the upper end of the above-mentioned bracket.

[0037] In the above embodiment, the bracket is a hollow bracket and will not block the sample discharge port 21. During the concentration process, after the liquid suction device works to extract the upper clear liquid in the concentration barrel 2 and reaches the required liquid level, the liquid suction device stops working and the magnetic stirrer 5 is started to stir the remaining sample evenly, and then the sample discharge port 21 is opened to discharge it, ensuring that no sediment will remain and affect the subsequent detection results.

[0038] It should be noted that the magnetic stirrer 5 is a product of the prior art. In this embodiment, a miniature product can be used. The magnetic stirrer 5 generally includes a fixed magnetic part and a rotor part. The magnetic part is packaged and installed on the upper end of the bracket, and the rotor part is placed on the upper end of the magnetic part. Its functional principle is not described here. Of course, the magnetic stirrer 5 can also use other adaptable stirring mechanisms.

[0039] It should be particularly noted that the inner bottom wall of the concentration barrel 2 is conical, and the sample discharge port 21 is arranged at the tip of the cone, so as to ensure that the sample in the concentration barrel 2 can be completely discharged through the sample discharge port 21 .

[0040] In this embodiment, Figure 3 As shown, there are multiple concentration barrels 2, and correspondingly, there are multiple suction pipes 3, which are distributed one by one with the concentration barrels 2. Multiple concentration barrels 2 can concentrate multiple samples at the same time, greatly improving the concentration efficiency.

[0041] As a preferred embodiment, a mounting bracket 6 is provided on the inner bottom wall of the chassis 1, and a placement plane is provided on the upper end of the mounting bracket 6. A positioning groove corresponding to the concentration barrel 2 is provided on the placement plane, and a through hole is provided through the positioning groove corresponding to the position of the sample discharge port 21, and the sample bottle 4 is arranged in the mounting bracket 6.

[0042] In the above embodiment, the concentration barrel 2 and the sample bottle 4 are well divided into upper and lower layers by the mounting frame 6, which meets the discharge and collection requirements of the sample, makes the space layout in the chassis 1 good, and makes the equipment structure design more compact.

[0043] In this embodiment, the structure of the mounting frame 6 can be flexibly designed according to actual needs, and there is no limitation on its shape. Multiple vertical support rods can be used, a placement plane can be set at the upper end of the support rod, and a slot-like structure for placing the sample bottle 4 can be set at the lower end of the support rod, or a carrier plate can be directly placed. This is a conventional technical design and will not be elaborated here.

[0044] As a preferred embodiment, the sampling port 12 is provided at the lower end of the side wall of the chassis 1 at a position corresponding to the sample bottle 4 .

[0045] In the above embodiment, the sampling port 12 is arranged on the side of the sample bottle 4 to facilitate the removal of the sample bottle 4 .

[0046] In this embodiment, a platform that can be translated toward the sampling port 12 can be set in the mounting frame 6, and a translation pushing device (such as a linear module) can be configured for the platform. After the sampling of the sample bottle 4 is completed, the sample bottle 4 is pushed to the sampling port 12 by the translation pushing device to facilitate sampling.

[0047] In this embodiment, the plurality of concentration barrels 2 are distributed at intervals in the annular direction, and the sampling port 12 is provided at the lower portion of the side wall of the chassis 1 corresponding to each position of the sample bottle 4. The design of the annular sampling port 12 facilitates sampling of different sample bottles 4 from different angles, and the layout is relatively reasonable.

[0048] In this embodiment, the liquid suction device is installed in the middle of the lower end of the box cover 11 and is connected to a water tank, and the upper layer of clear liquid extracted is sent to the vertical storage. At the same time, based on the annular spacing arrangement of the concentration barrels 2, the middle part of the chassis is effectively occupied by the liquid suction device, the spatial layout of the entire device is better, and the volume can be miniaturized.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A sample automatic concentration device, characterized in that: The invention comprises a case (1), a concentration barrel (2), a liquid suction device, a pipette (3) and a sample bottle (4); the case (1) is provided with a case cover (11) on the top; the concentration barrel (2) is installed in the case (1); the pipette (3) is vertically arranged at the lower end of the case cover (11), and its lower end extends from top to bottom into the concentration barrel (2); the liquid suction device is connected to and communicates with the upper end of the pipette (3); the bottom wall of the concentration barrel (2) is provided with a sample discharge port (21) with an electric control valve; the sample bottle (4) is arranged below the sample discharge port (21); and the side wall of the case (1) is provided with a sampling port (12) for taking out the sample bottle (4).

2. The automatic sample concentration device according to claim 1, characterized in that: The liquid suction device is a water pump, and the liquid inlet end of the water pump is connected to the suction tube (3) through a pipeline.

3. The automatic sample concentration device according to claim 2, characterized in that: The chassis (1) is provided with a controller with a display, and the water pump and the electric control valve are respectively connected to the controller.

4. The automatic sample concentration device according to claim 3, characterized in that: The upper end of the box cover (11) is connected to an electric lifting device (22), and the electric lifting device (22) is mounted on the side wall of the box (1) through a connecting arm. The electric lifting device (22) is used to drive the box cover (11) to drive the suction tube (3) to move up and down relative to the concentration barrel (2), and the electric lifting device (22) is connected to the controller.

5. The automatic sample concentration device according to claim 4, characterized in that: A bracket is provided on the inner bottom wall of the concentration barrel (2), and a magnetic stirrer (5) connected to the controller is provided on the upper end of the bracket.

6. The automatic sample concentration device according to claim 1, characterized in that: The concentration barrels (2) are provided in plurality, and correspondingly, the suction pipes (3) are provided in plurality and are distributed in a one-to-one correspondence with the concentration barrels (2).

7. The automatic sample concentration device according to claim 6, characterized in that: The inner bottom wall of the chassis (1) is provided with a mounting frame (6), the upper end of the mounting frame (6) has a placement plane, the placement plane is provided with a positioning groove corresponding to the concentration barrel (2), the positioning groove is provided with a through hole corresponding to the position of the sample discharge port (21), and the sample bottle (4) is arranged in the mounting frame (6).

8. The automatic sample concentration device according to any one of claims 1 to 7, characterized in that: The sampling port (12) is provided at the lower end of the side wall of the chassis (1) at a position corresponding to the sample bottle (4).

9. The automatic sample concentration device according to claim 8, characterized in that: The plurality of concentration barrels (2) are distributed in an annular manner at intervals, and the sampling port (12) is provided at the lower part of the side wall of the chassis (1) corresponding to the position of each sample bottle (4).

10. The automatic sample concentration device according to claim 9, characterized in that: The liquid suction device is installed at the middle part of the lower end of the box cover (11) and is connected to a water tank.

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