Sample pretreatment device

Abstract

The utility model discloses a sample pretreatment device, which belongs to the technical field of solution preparation equipment and comprises an electromagnetic heating device and a multifunctional detection component. In the Y-axis direction, the multifunctional detection assembly is arranged on one side of the electromagnetic heating device, and the multifunctional detection assembly can reciprocate in the X-axis direction. The multifunctional detection assembly comprises a pH adjusting device and a pH measuring device; the heating end of the electromagnetic heating device is positioned in a projection area of a moving path of the adjusting part of the pH adjusting device and the detecting part of the pH measuring device; according to the utility model, the pH adjusting device and the pH measuring device are integrated into an integrated structure, and the integrated pH adjusting device and the integrated pH measuring device have the flexibility of reciprocating motion along the X-axis direction, so that all early-stage treatment work can be carried out on the equipment disclosed by the utility model; and thus, the overall working efficiency and the data detection accuracy are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solution preparation equipment, and in particular relates to a sample pre-processing device. Background Art

[0002] To detect the hexavalent chromium content in soil, the only currently applicable method is alkaline solution extraction. When using this method for testing, the hexavalent chromium in the soil must be pre-treated according to the following steps: weigh the air-dried, crushed, and sieved sample and place it in a beaker. Add an alkaline extraction solution, magnesium chloride, and a dipotassium hydrogen phosphate-potassium dihydrogen phosphate buffer solution. Then, place a stirring bar on a stirring and heating device. Stir the sample at room temperature for 5 minutes, then turn on the heating device and heat and stir to 90°C-95°C for 60 minutes. Next, remove the beaker, cool to room temperature, filter through a 0.45μm filter membrane, place the filtrate in a 250mL beaker, and adjust the pH of the solution to 7.5±0.5 with nitric acid. Finally, transfer the solution to a 100mL volumetric flask, dilute to the mark with water, shake well, and test. This process is not only cumbersome and time-consuming, but also requires the sample solution to be transferred between multiple operating devices. Therefore, it is not only easy to increase the risk of sample contamination, but also the sample is prone to changes when it is kept at room temperature for a long time, thus affecting the final test results. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to provide a sample pre-processing device which can accelerate the sample pre-processing efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A sample pre-treatment device, comprising an electromagnetic heating device and a multifunctional detection component;

[0006] In the Y-axis direction, the multifunctional detection component is arranged on one side of the electromagnetic heating device, and the multifunctional detection component can move back and forth along the X-axis direction;

[0007] The multifunctional detection assembly includes a pH adjustment device and a pH measuring device;

[0008] The heating end of the electromagnetic heating device is located within the projection area of ​​the moving path of the adjusting portion of the pH adjusting device and the detecting portion of the pH measuring device.

[0009] Further, it also includes a sliding assembly;

[0010] In the Y-axis direction, the sliding assembly is arranged on one side of the electromagnetic heating device;

[0011] The multifunctional detection assembly includes a connecting frame;

[0012] The pH adjusting device and the pH measuring device are connected to the movable part of the sliding assembly via a connecting frame;

[0013] The sliding assembly can drive the connecting frame to move back and forth along the X-axis direction.

[0014] Furthermore, the sliding component is provided with at least two multifunctional detection components slidingly connected thereto.

[0015] Furthermore, the pH adjustment device includes a burette and a solution bottle arranged on a connecting frame;

[0016] The burette and the solution bottle are connected via a flexible tube;

[0017] The liquid outlet of the burette is arranged toward the heating end of the electromagnetic heating device.

[0018] Furthermore, the burette is provided with a hollow rubber cap connected thereto.

[0019] Furthermore, the pH measuring device includes a detection element and a display which are arranged on a connecting frame and electrically connected to each other;

[0020] The detection member is slidably connected to the connecting frame;

[0021] The detection member can move back and forth along the Z-axis direction;

[0022] The detection portion of the detection member is arranged toward the heating end of the electromagnetic heating device.

[0023] Furthermore, the connecting frame is provided with a first guide sleeve;

[0024] The detection member is slidably connected to the connecting frame through a first guide sleeve.

[0025] Furthermore, the multifunctional detection component further includes a temperature sensor;

[0026] The temperature sensor is slidably connected to the connecting frame;

[0027] The temperature sensor can move back and forth along the Z-axis direction;

[0028] The detection part of the temperature sensor is arranged toward the heating end of the electromagnetic heating device.

[0029] Furthermore, a second guide sleeve is provided on the connecting frame;

[0030] The temperature sensor is slidably connected to the connecting frame through a second guide sleeve.

[0031] Furthermore, the electromagnetic heating device includes at least four electromagnetic heating disks;

[0032] The electromagnetic heating plates are spaced apart in the X-axis direction;

[0033] The heating end of the electromagnetic heating disk is located within the projection area of ​​the moving path of the adjusting portion of the pH adjusting device and the detecting portion of the pH measuring device.

[0034] The beneficial effect of the present invention is that the sample pretreatment device provided by the present invention integrates the pH adjustment device and the pH measuring device into an integrated structure, and allows the integrated pH adjustment device and the pH measuring device to have the freedom to move back and forth along the X-axis direction, so that all preliminary processing work can be carried out on the device of the present invention, thereby improving the overall work efficiency and the accuracy of data detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Shown is a schematic structural diagram of a sample pre-treatment device according to a specific embodiment of the present utility model;

[0036] Figure 2 Shown is a top view of a sample pre-treatment device according to a specific embodiment of the present invention;

[0037] Description of labels:

[0038] 1. Electromagnetic heating device; 11. Electromagnetic heating plate;

[0039] 2. Multifunctional detection assembly; 21. pH adjustment device; 211. Burette; 212. Solution bottle; 213. Hose; 214. Hollow rubber cap; 22. pH measuring device; 221. Detection element; 23. Connecting frame; 231. First guide sleeve; 232. Second guide sleeve; 24. Temperature sensor;

[0040] 3. Sliding component. DETAILED DESCRIPTION

[0041] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0042] The most critical concept of the present invention is to improve the integration of the pH adjustment device and the pH measuring device, and enable the integrated pH adjustment device and pH measuring device to move back and forth along the X-axis direction, so that the preliminary preparation work of the sample can be carried out on a set of equipment, thereby improving the overall work efficiency and the accuracy of data detection.

[0043] Please refer to Figures 1 to 2 The sample pre-processing device provided by the present invention includes an electromagnetic heating device 1 and a multifunctional detection component 2;

[0044] In the Y-axis direction, the multifunctional detection component 2 is arranged on one side of the electromagnetic heating device 1, and the multifunctional detection component 2 can move back and forth along the X-axis direction;

[0045] The multifunctional detection assembly 2 includes a pH adjustment device 21 and a pH measuring device 22;

[0046] The heating end of the electromagnetic heating device 1 is located within the projection area of ​​the movement paths of the adjusting portion of the pH adjusting device 21 and the detecting portion of the pH measuring device 22 .

[0047] From the above description, it can be seen that the beneficial effects of the present invention are: providing a sample pretreatment device, by integrating the pH adjustment device 21 and the pH measuring device 22 into an integrated structure, and allowing the integrated pH adjustment device 21 and the pH measuring device 22 to have the freedom to move back and forth along the X-axis direction; compared with the existing sample preparation method and preparation equipment, the improved sample pretreatment device can integrate all related equipment for the early operations into the same structure, thereby providing structural support for all operation processes to be carried out on the equipment of the present invention, thereby significantly improving the overall work efficiency and data detection accuracy.

[0048] Furthermore, the sample pre-processing device mentioned above further includes a sliding component 3;

[0049] In the Y-axis direction, the sliding assembly 3 is arranged on one side of the electromagnetic heating device 1;

[0050] The multifunctional detection assembly 2 includes a connecting frame 23;

[0051] The pH adjustment device 21 and the pH measuring device 22 are connected to the movable part of the sliding assembly 3 through the connecting frame 23;

[0052] The sliding assembly 3 can drive the connecting frame 23 to move back and forth along the X-axis direction.

[0053] Specifically, the sliding component 3 is any commercially available device that can drive an object to move in a straight line, such as a linear guide rail, a pneumatic guide rail, etc.; considering the manufacturing cost of the equipment, the sliding component 3 of the present invention is preferably provided with a slider slidably connected to the slide rail, and then the multifunctional detection component 2 is connected to the slide rail through the slider, so that the multifunctional detection component 2 can move back and forth along the X-axis direction.

[0054] From the above description, it can be seen that the design has made specific modifications to the sample pre-processing device of the utility model. By setting a corresponding sliding component 3 on one side of the electromagnetic heating device 1, structural support is provided for the multifunctional detection component 2 to be able to realize reciprocating movement in the X-axis direction, thereby facilitating the staff to adjust the work position of the multifunctional detection component 2 at any time.

[0055] Furthermore, the sliding component 3 is provided with at least two multifunctional detection components 2 slidably connected thereto.

[0056] From the above description, it can be seen that the design has made further improvements to the number of sliding components 3. By increasing the number of multifunctional detection components 2, when a problem occurs in one of the multifunctional detection components 2 or is in working state, the remaining multifunctional detection components 2 can be enabled to perform the corresponding sample pre-processing work, thereby effectively improving the overall work efficiency.

[0057] Furthermore, the pH adjustment device 21 includes a burette 211 and a solution bottle 212 provided on a connecting frame 23;

[0058] The burette 211 and the solution bottle 212 are connected via a hose 213;

[0059] The liquid outlet of the burette 211 is arranged toward the heating end of the electromagnetic heating device 1 .

[0060] Furthermore, the burette 211 is provided with a hollow rubber cap 214 connected thereto.

[0061] As can be seen from the above description, this design has made specific modifications to the structure of the pH adjusting device 21. The burette 211 and the solution bottle 212 storing the balancing solvent are connected by a hose 213. This not only avoids the risk of contamination of the solvent due to contact with the external environment during the extraction process; at the same time, a corresponding hollow rubber cap 214 is provided on the burette 211, which also serves to improve the efficiency of obtaining the extracted solvent. That is, when it is necessary to obtain the solution, it is only necessary to quickly pinch and release the hollow rubber cap 214 to generate negative pressure inside the pH adjusting device 21. To ensure internal pressure balance, the liquid in the solution bottle 212 will flow into the burette 211 and be temporarily stored inside the burette 211. When it is necessary to balance the solution, the liquid can be immediately discharged.

[0062] Furthermore, the pH measuring device 22 includes a detection member 221 and a display which are arranged on the connecting frame 23 and are electrically connected to each other;

[0063] The detection member 221 is slidably connected to the connecting frame 23;

[0064] The detection member 221 can move back and forth along the Z-axis direction;

[0065] The detection portion of the detection member 221 is arranged toward the heating end of the electromagnetic heating device 1 .

[0066] Furthermore, a first guide sleeve 231 is provided on the connecting frame 23;

[0067] The detection member 221 is slidably connected to the connecting frame 23 via the first guide sleeve 231 .

[0068] As can be seen from the above description, the design has made specific modifications to the composition structure of the pH measuring device 22 and the connecting frame 23, thereby providing structural support for the multifunctional detection component 2 to accurately measure the pH value of the solution; at the same time, it ensures that the detection part 221 can move freely in the Z-axis direction, thereby ensuring that the detection part 221 can smoothly extend into the corresponding beaker during the pH detection process, avoiding the problem of structural interference.

[0069] Furthermore, the multifunctional detection assembly 2 further includes a temperature sensor 24;

[0070] The temperature sensor 24 is slidably connected to the connecting frame 23;

[0071] The temperature sensor 24 can move back and forth along the Z-axis;

[0072] The detection portion of the temperature sensor 24 is disposed toward the heating end of the electromagnetic heating device 1 .

[0073] Furthermore, a second guide sleeve 232 is provided on the connecting frame 23;

[0074] The temperature sensor 24 is slidably connected to the connecting frame 23 through the second guide sleeve 232 .

[0075] From the above description, it can be seen that during the pre-treatment of the sample, the sample usually needs to be heated. In order to prevent the sample from affecting the final detection accuracy due to abnormal temperature, a temperature sensor 24 is needed to monitor the temperature of the sample in real time to ensure that the sample can be kept at a constant temperature for a long time.

[0076] Furthermore, the electromagnetic heating device 1 includes at least four electromagnetic heating disks 11;

[0077] The electromagnetic heating plates 11 are spaced apart in the X-axis direction;

[0078] The heating end of the electromagnetic heating disk 11 is located within the projection area of ​​the movement paths of the adjusting portion of the pH adjusting device 21 and the detecting portion of the pH measuring device 22 .

[0079] As can be seen from the above description, this design has made specific modifications to the composition structure of the electromagnetic heating device 1. By providing multiple electromagnetic heating disks 11, heating stations are directly added, thereby further improving the sample preparation efficiency.

[0080] The sample pre-treatment device of the utility model can assist in the preparation of the detection solution.

[0081] Please refer to Figures 1 to 2 , the first embodiment of the present utility model is:

[0082] A sample pre-treatment device comprises an electromagnetic heating device 1, a sliding component 3 and two multifunctional detection components 2;

[0083] In the Y-axis direction, the multifunctional detection component 2 is arranged on one side of the electromagnetic heating device 1, and the multifunctional detection component 2 can move back and forth along the X-axis direction; the multifunctional detection component 2 includes a pH adjustment device 21, a pH measuring device 22 and a temperature sensor 24; the electromagnetic heating device 1 includes four electromagnetic heating disks 11; the electromagnetic heating disks 11 are arranged at intervals in the X-axis direction; the heating end of the electromagnetic heating disk 11 is located within the projection area of ​​the moving path of the adjustment part of the pH adjustment device 21 and the detection part of the pH measuring device 22.

[0084] In the Y-axis direction, the sliding assembly 3 is arranged on one side of the electromagnetic heating device 1; the multifunctional detection assembly 2 includes a connecting frame 23; the connecting frame 23 is provided with a first guide sleeve 231 and a second guide sleeve 232; the pH adjustment device 21 and the pH measuring device 22 are connected to the movable part of the sliding assembly 3 through the connecting frame 23; the sliding assembly 3 can drive the connecting frame 23 to move back and forth along the X-axis direction.

[0085] The pH adjustment device 21 includes a burette 211 and a solution bottle 212 arranged on a connecting frame 23; the burette 211 and the solution bottle 212 are connected by a hose 213; the liquid outlet of the burette 211 is arranged toward the heating end of the electromagnetic heating device 1; the burette 211 is provided with a hollow rubber cap 214 connected thereto.

[0086] The pH measuring device 22 includes a detection member 221 and a display which are arranged on a connecting frame 23 and electrically connected to each other; the detection member 221 is slidably connected to the connecting frame 23; the detection member 221 can move back and forth along the Z-axis direction; the detection portion of the detection member 221 is arranged toward the heating end of the electromagnetic heating device 1; the detection member 221 is slidably connected to the connecting frame 23 via a first guide sleeve 231.

[0087] The temperature sensor 24 is slidably connected to the connecting frame 23; the temperature sensor 24 can reciprocate along the Z-axis direction; the detection part of the temperature sensor 24 is set toward the heating end of the electromagnetic heating device 1; the temperature sensor 24 is slidably connected to the connecting frame 23 through the second guide sleeve 232.

[0088] The working principle of the present invention is as follows: first, a beaker containing the soil to be tested and the buffer solution is placed on the corresponding electromagnetic heating plate 11, and a stirrer is placed in the beaker; then, the electromagnetic heating device 1 is started. Under the action of electromagnetic induction, the stirrer in the beaker rotates at a constant speed, and the temperature of the liquid in the beaker gradually increases. At this time, the corresponding multifunctional detection component 2 is moved to the corresponding beaker, and the temperature sensor 24 is inserted into the beaker to monitor the temperature in real time; after a period of constant temperature heating, the electromagnetic heating device is turned off. 1, and after the beaker is cooled and allowed to stand to room temperature, the hollow rubber cap 214 is squeezed to allow the balancing solution in the solution bottle 212 to flow into the burette 211 under the action of negative pressure; then, the detection member 221 is inserted into the interior of the beaker until the detection portion of the detection member 221 is immersed in the solution; finally, the burette 211 is opened again, and the balancing solution in the burette 211 is gradually dripped into the interior of the beaker. The pH value of the solution can be determined by the value displayed on the display. When the pH value of the solution reaches the specified range, the sample pretreatment is completed.

[0089] In summary, the present invention provides a sample pretreatment device that integrates a pH adjustment device and a pH measuring device into an integrated structure, and allows the integrated pH adjustment device and pH measuring device to have the freedom to move back and forth along the X-axis direction. Compared with the existing sample preparation method and preparation equipment, the improved sample pretreatment device can integrate all the related equipment of the early operation into the same structure, thereby providing structural support for all operation processes to be carried out on the device of the present invention, thereby significantly improving the overall work efficiency and data detection accuracy. The burette is connected to the solution bottle storing the balancing solvent through a hose, which not only avoids the risk of contamination of the solvent due to contact with the external environment during the extraction process; at the same time, a corresponding hollow rubber cap is provided on the burette, which also serves to improve the efficiency of obtaining the solvent. That is, when the solution needs to be obtained, only the hollow rubber cap needs to be quickly pinched and loosened to generate negative pressure inside the pH adjustment device. To ensure internal pressure balance, the liquid in the solution bottle will flow into the burette and be temporarily stored inside the burette. When the solution needs to be balanced, the liquid can be immediately discharged, which can further improve the overall work efficiency.

[0090] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A sample pre-treatment device, characterized in that: It includes an electromagnetic heating device and a multifunctional detection component; In the Y-axis direction, the multifunctional detection component is arranged on one side of the electromagnetic heating device, and the multifunctional detection component can move back and forth along the X-axis direction; The multifunctional detection assembly includes a pH adjustment device and a pH measuring device; The heating end of the electromagnetic heating device is located within the projection area of ​​the moving path of the adjusting portion of the pH adjusting device and the detecting portion of the pH measuring device.

2. The sample pretreatment device according to claim 1, characterized in that: Also included is a sliding assembly; In the Y-axis direction, the sliding assembly is arranged on one side of the electromagnetic heating device; The multifunctional detection assembly includes a connecting frame; The pH adjusting device and the pH measuring device are connected to the movable part of the sliding assembly via a connecting frame; The sliding assembly can drive the connecting frame to move back and forth along the X-axis direction.

3. The sample pretreatment device according to claim 2, characterized in that: The sliding component is provided with at least two multifunctional detection components which are slidably connected thereto.

4. The sample pretreatment device according to claim 2, characterized in that: The pH adjustment device includes a burette and a solution bottle arranged on a connecting frame; The burette and the solution bottle are connected via a flexible tube; The liquid outlet of the burette is arranged toward the heating end of the electromagnetic heating device.

5. The sample pre-treatment device according to claim 4, characterized in that: The burette is provided with a hollow rubber cap which is in communication with the burette.

6. The sample pre-treatment device according to claim 2, characterized in that: The pH measuring device includes a detection element and a display which are arranged on a connecting frame and electrically connected to each other; The detection member is slidably connected to the connecting frame; The detection member can move back and forth along the Z-axis direction; The detection portion of the detection member is arranged toward the heating end of the electromagnetic heating device.

7. The sample pre-treatment device according to claim 6, characterized in that: The connecting frame is provided with a first guide sleeve; The detection member is slidably connected to the connecting frame through a first guide sleeve.

8. The sample pre-treatment device according to claim 2, characterized in that: The multifunctional detection component also includes a temperature sensor; The temperature sensor is slidably connected to the connecting frame; The temperature sensor can move back and forth along the Z-axis direction; The detection part of the temperature sensor is arranged toward the heating end of the electromagnetic heating device.

9. The sample pre-treatment device according to claim 8, characterized in that: The connecting frame is provided with a second guide sleeve; The temperature sensor is slidably connected to the connecting frame through a second guide sleeve.

10. The sample pre-treatment device according to claim 1, characterized in that: The electromagnetic heating device comprises at least four electromagnetic heating disks; The electromagnetic heating plates are spaced apart in the X-axis direction; The heating end of the electromagnetic heating disk is located within the projection area of ​​the moving path of the adjusting portion of the pH adjusting device and the detecting portion of the pH measuring device.

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