A fully automated sampling device for solid samples

Abstract

The utility model provides a kind of for solid sample's full-automatic sampling device, it is related to sampling equipment, it includes: rack;Stirring mechanism, stirring shaft is installed on sliding block, stirring shaft is equipped with stirring disc, sliding block drives stirring shaft vertical motion;Pipetting mechanism, electric telescopic link is vertically arranged on rack, suction tube is vertically installed on the output end of electric telescopic link, peristaltic pump is connected suction tube;And rotary platform, rotary disc is installed on rudder, rotary disc is equipped with first container seat and second container seat, stirring container is detachably installed on first container seat, pipette container is detachably installed on second container seat, rudder is used to drive rotary disc rotation, make stirring container switch between below stirring shaft and below suction tube.The utility model has the beneficial effects: realize the full-automatic operation of dissolving sample, stirring and preparation quantitative solution, save a lot of manual labor, reduce experiment operation threshold, improve sampling precision, ensure that the result accurate and reliable of sample analysis.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, and in particular to a fully automatic sampling device for solid samples. Background Technology

[0002] Solid sample sampling and analysis has wide applications in environmental monitoring, industrial process control, and product quality management, with its role being particularly prominent in quality control. Systematic sampling and analysis ensures that products meet established standards, thereby promoting product quality improvement. Taking the food processing industry as an example, after obtaining representative samples from the object to be tested using solid particle sampling devices, further detection of key indicators such as nutritional components, microorganisms, and harmful substances can be carried out. In the chemical analysis process of solid substances, the steps of sample dissolution, homogenization, and preparation of quantitative solutions are crucial; the quality of these operations directly determines the accuracy and reliability of subsequent analytical results.

[0003] In traditional operating models, all of the above steps rely on manual labor. This not only requires comprehensive safety protection measures (such as wearing compliant lab coats, protective gloves, and goggles) to avoid chemical contact with skin or eyes and cause harm, but also places stringent demands on the precision of laboratory personnel, such as maintaining high accuracy during weighing and pipetting to ensure data reliability. However, due to factors such as differences in personnel training levels and physical fatigue caused by prolonged work, result deviations are difficult to completely avoid. In recent years, although some automated sampling equipment has emerged, the overall level of automation is low, only able to replace manual labor in certain parts (such as extracting a preset volume of solution). It cannot meet the needs of automated sampling, data management, and analysis of large-scale samples, and it is even more difficult to flexibly adjust for different batches and types of samples, easily leading to result deviations and making it difficult to address the issue of flexible adjustments for different batches and types of samples. Utility Model Content

[0004] In view of this, in order to solve the problems of low automation level of solid sample sampling in the prior art, easy occurrence of result deviation, and difficulty in flexibly adjusting for different batches and types of samples, the embodiments of this utility model provide a fully automatic sampling device for solid samples.

[0005] An embodiment of this utility model provides a fully automated sampling device for solid samples, comprising:

[0006] frame;

[0007] A stirring mechanism includes a drive motor, an electric slide table, and a stirring shaft. The electric slide table is vertically mounted on the frame. The drive motor is connected to the input end of the electric slide table. The stirring shaft is mounted on the slider of the electric slide table. A stirring plate is provided at the lower end of the stirring shaft. The stirring plate has a through hole. The drive motor is used to drive the electric slide table so that the slider drives the stirring shaft to move vertically.

[0008] A pipetting mechanism includes an electric telescopic rod, a peristaltic pump, and a pipette. The electric telescopic rod is vertically mounted on the frame, the pipette is vertically mounted on the output end of the electric telescopic rod, and the peristaltic pump is connected to the pipette.

[0009] The rotary platform includes a servo motor, a rotary table, a stirring container, and a pipetting container. The rotary table is mounted on the servo motor. A first container seat is located below the stirring shaft on the rotary table, and a second container seat is located below the pipette on the rotary table. The stirring container is detachably mounted on the first container seat, and the pipetting container is detachably mounted on the second container seat. The servo motor is used to drive the rotary table to rotate, so that the stirring container switches between being below the stirring shaft and below the pipette.

[0010] Furthermore, the first container seat is disposed on the extension line of the stirring shaft, and the second container seat is disposed on the extension line of the straw.

[0011] Furthermore, the rotary table rotates 180° to switch the first container seat and the second container seat between below the stirring shaft and below the suction tube.

[0012] Furthermore, both the first container seat and the second container seat are cylindrical sleeves.

[0013] Furthermore, the stirring container is a graduated cylinder, and the pipetting container is a beaker.

[0014] Furthermore, the pipetting mechanism also includes a liquid level sensor, which is mounted on the pipette.

[0015] Furthermore, it also includes a controller connected to the drive motor, the electric telescopic rod, the peristaltic pump, and the servo motor. The controller is used to control the drive motor to drive the electric slide to move the stirring shaft up and down in the stirring container; the servo motor to drive the rotary table to rotate so that the stirring container rotates below the pipette; the electric telescopic rod to drive the pipette to insert into the stirring container; the peristaltic pump to draw the solution in the stirring container through the pipette; and the servo motor to drive the rotary table to rotate so that the pipette rotates below the pipette, and the peristaltic pump to discharge the solution in the pipette into the pipette.

[0016] Furthermore, the controller is a 51 microcontroller.

[0017] Furthermore, a displacement sensor is provided at the lower end of the electric slide.

[0018] Furthermore, it also includes a base, the servo motor is fixed on the base and its output shaft is vertically upward and connected to the rotary table, and the frame is fixed on the base.

[0019] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows:

[0020] This invention discloses a fully automated sampling device for solid samples. The stirring mechanism is driven by an electric slide, whose slider moves the stirring shaft vertically, causing it to extend into and move up and down within the stirring container to stir the dissolved solid sample. A rotary platform first drives the stirring container to rotate, positioning it below the pipette. A pipette mechanism, driven by an electric dispensing rod, inserts the pipette into the stirring container and uses a peristaltic pump to draw the solution. The rotary platform then moves the pipette container below the pipette via the rotary table, and the pipette mechanism uses a peristaltic pump to discharge the solution from the pipette into the pipette container. This fully automated operation of sample dissolution, stirring, and quantitative solution preparation saves significant manual labor, lowers the barrier to experimental operation, improves sampling accuracy, and ensures accurate and reliable sample analysis results. By deploying multiple automated sampling devices in a networked parallel configuration, large-scale sampling tasks can be effectively handled, and the recording, storage, and analysis of sampling data can be conveniently completed. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a fully automated sampling device for solid samples according to the present invention;

[0022] Figure 2 This is a control circuit diagram of a fully automatic sampling device for solid samples according to the present invention.

[0023] In the diagram: 1. Frame; 2. Electric slide; 3. Displacement sensor; 4. Stirring shaft; 5. Electric telescopic rod; 6. Peristaltic pump; 7. Pipette; 8. Liquid level sensor; 9. Servo motor; 10. Rotary table; 11. First container seat; 12. Second container seat; 13. Stirring container; 14. Pipette; 15. Base; 16. Control box; 17. Button section; 18. LCD display. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0025] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0028] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0029] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Please refer to Figure 1 The present invention provides a fully automated sampling device for solid samples, including a frame 1, a stirring mechanism, a pipetting mechanism, and a rotary platform.

[0031] The frame 1 is used to support and fix the stirring mechanism and the pipetting mechanism, so that the stirring mechanism and the pipetting mechanism are at the required sampling height. The frame 1 is generally made of aluminum profile frame and is vertically fixed.

[0032] The stirring mechanism includes a drive motor, an electric slide 2, and a stirring shaft 4. The electric slide 2 is vertically mounted on the frame 1. The drive motor is connected to the input end of the electric slide 2. The stirring shaft 4 is mounted on the slider of the electric slide 2. The lower end of the stirring shaft 4 is provided with a stirring plate with a through hole. The drive motor is used to drive the electric slide 2 so that the slider drives the stirring shaft 4 to move vertically.

[0033] Specifically, the electric slide 2 is mounted on the frame 1. The output direction of the electric slide 2 is vertical, meaning the movement direction of the slider of the electric slide 2 is vertical. The upper end of the electric slide 2 is the input end, and the drive motor is fixedly mounted on the upper end of the electric slide 2 and connected to it. The stirring shaft 4 is vertically arranged and mounted on the slider. The stirring plate is generally disc-shaped and coaxially arranged with the stirring shaft 4. The perforations are circular holes, evenly distributed throughout the stirring plate. The movement of the stirring shaft 4 drives the stirring plate to move synchronously. The drive motor can drive the slider of the electric slide 2 to move vertically. The slider, along with the stirring shaft 4, moves vertically back and forth, also driving the stirring plate to move vertically back and forth, thereby achieving stirring. It should be noted that, according to the requirements of the soil analysis technical specifications, stirring here refers to the vertical back and forth movement of the stirring shaft 4, and not rotation around its axis.

[0034] In some embodiments, a displacement sensor 3 is provided at the lower end of the electric slide 2. The displacement sensor 3 is used to detect the movement distance of the slider, that is, to detect the movement distance of the stirring shaft 4, and thus to control the movement range of the stirring shaft 4.

[0035] The pipetting mechanism includes an electric telescopic rod 5, a peristaltic pump 6, and a pipette 7. The electric telescopic rod 5 is vertically mounted on the frame 1, the pipette 7 is vertically mounted on the output end of the electric telescopic rod 5, and the peristaltic pump 6 is connected to the pipette 7.

[0036] Specifically, the electric telescopic rod 5 is fixedly installed on the frame 1, located on one side of the electric slide table 2. The output end of the electric telescopic rod 5 is vertically downward, and the suction tube 7 is fixedly installed on the output end of the electric telescopic rod 5. The electric telescopic rod 5 drives the suction tube 7 to move vertically by telescopic movement. The peristaltic pump 6 is fixedly installed on the frame 1, and the peristaltic pump 6 is connected to the upper end of the suction tube 7. The peristaltic pump 6 can draw in or discharge liquid through the suction tube 7.

[0037] In some embodiments, the pipetting mechanism further includes a liquid level sensor 8, which is mounted on the pipette 7. The liquid level sensor 8 can detect the solution content within the pipette 7.

[0038] The rotary platform includes a servo motor 9, a rotary table 10, a stirring container 13, and a pipetting container 14. The rotary table 10 is mounted on the servo motor 9. A first container seat 11 is provided on the rotary table 10 below the stirring shaft 4, and a second container seat 12 is provided on the rotary table 10 below the pipette 7. The stirring container 13 is detachably mounted on the first container seat 11, and the pipetting container 14 is detachably mounted on the second container seat 12. The servo motor 9 is used to drive the rotary table 10 to rotate, so that the stirring container 13 switches between being below the stirring shaft 4 and below the pipette 7.

[0039] To ensure that the stirring shaft 4 and the pipette 7 can be accurately inserted into the stirring container 13 and the pipette container 14, respectively, the first container seat 11 is disposed on the extension line of the stirring shaft 4, and the second container seat 12 is disposed on the extension line of the pipette 7. Thus, after the stirring container 13 is mounted on the first container seat 11 and the pipette 14 is mounted on the second container seat 12, simply driving the stirring shaft 4 and the pipette 7 downwards allows them to be inserted into the stirring container 13 and the pipette 14, respectively.

[0040] In some embodiments, in order to more simply control the servo motor 9 to drive the rotary table 10 to rotate and switch the positions of the stirring container 13 and the pipetting container 14, the rotary table 10 rotates 180° to switch the first container seat 11 and the second container seat 12 between below the stirring shaft 4 and below the pipette 7.

[0041] The shapes of the first container base 11 and the second container base 12 are determined according to the shapes of the stirring container 13 and the pipette 14, respectively. Generally, the stirring container 13 and the pipette 14 are both cylindrical containers with open tops. Therefore, the first container base 11 and the second container base 12 are both cylindrical sleeves. The cylindrical stirring container 13 and the pipette 14 can be placed inside the first container base 11 and the second container base 12, respectively, thus achieving the installation of the stirring container 13 and the pipette 14. In this embodiment, the stirring container 13 is a graduated cylinder, and the pipette 14 is a beaker.

[0042] In some embodiments, the present invention provides a fully automated sampling device for solid samples.

[0043] It also includes a base 15, the servo motor 9 is fixed on the base 15 and its output shaft is vertically upward and connected to the rotary table 10. The frame 1 is approximately L-shaped, with one end fixed on the base 15 and the other end located above the rotary table 10.

[0044] Furthermore, considering that the stirring mechanism, the pipetting mechanism, and the rotary platform operate according to sampling requirements, the fully automatic sampling device for solid samples of this utility model also includes a controller connected to the drive motor, the electric telescopic rod 5, the peristaltic pump 6, and the servo motor 9. The controller controls the operation of the drive motor, the electric telescopic rod 5, the peristaltic pump 6, and the servo motor 9, respectively, so that the drive motor drives the electric slide 2 to move vertically, causing the stirring shaft 4 to be inserted into the stirring container 13 and move up and down reciprocally within the stirring container 13, so that the stirring disc moves up and down reciprocally within the stirring container 13 to complete the stirring; after stirring is completed, the drive motor drives the slider to move upward, causing the stirring disc to move up and down reciprocally within the stirring container 13 to complete the stirring; after stirring is completed, the drive motor drives the slider to move upward, causing the stirring disc to move up and down reciprocally. The stirring shaft 4 leaves the stirring container 13; the servo motor 9 drives the rotary table 10 to rotate, causing the stirring container 13 to rotate below the pipette 7; the electric telescopic rod 5 drives the pipette 7 to insert into the stirring container 13; the peristaltic pump 6 draws the solution from the stirring container 13 through the pipette 7; after the drawing is completed, the electric telescopic rod 5 drives the pipette 7 to move up and down away from the stirring container 13; the liquid level sensor 8 can detect the volume of the solution drawn in the pipette 7 to accurately control the volume of the solution drawn; the servo motor 9 drives the rotary table 10 to rotate, causing the pipette 14 to rotate below the pipette 7; the peristaltic pump 6 discharges the solution from the pipette 7 into the pipette 14.

[0045] The controller can be various microprocessors, such as Figure 2 As shown, in this embodiment, the controller is a 51 microcontroller integrated into the control box 16. The inputs of the 51 microcontroller are electrically connected to the button section 17, the liquid level sensor 8, and the displacement sensor 3. In the button section 17, k1 is the reset button for the servo motor 9, used for mode selection, interface switching, and parameter setting; k2 is used to select manual or automatic operation; and k3 and k4 are used to control the increase or decrease of stirring time, etc. The outputs of the 51 microcontroller are electrically connected to the L298N driver chip and the servo motor 9. The output of the L298N driver chip is electrically connected to the electric telescopic rod 5 and the peristaltic pump 6. The pins ENA-, ENA+, DIR-, DIR+, PUL-, and PUL+ of the 51 microcontroller are electrically connected to the input of the TB6600 stepper motor driver. The pins A-phase, A+phase, B-phase, and B+phase of the TB6600 stepper motor driver are connected to the drive motor. Furthermore, the control box 16 is equipped with a liquid crystal display 18, which uses an LCD1602 liquid crystal display module. Pins 4-16 of the LCD1602 liquid crystal display module are electrically connected to a 51 microcontroller. The liquid crystal display 18 can display sampling process information such as stirring time, stirring frequency, settling time, and volume of solution drawn.

[0046] It should be noted that the fully automatic sampling device for solid samples of this utility model is applicable to particle analysis of various types of soil. For specific soil particle analysis methods, please refer to the test steps of the pipette method in Section 5.1 of Chapter 5 Soil Particle Analysis in the "Technical Specification for Soil Analysis".

[0047] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0048] Where there is no conflict, the embodiments and features described above can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fully automated sampling device for solid samples, characterized in that, include: frame; A stirring mechanism includes a drive motor, an electric slide table, and a stirring shaft. The electric slide table is vertically mounted on the frame. The drive motor is connected to the input end of the electric slide table. The stirring shaft is mounted on the slider of the electric slide table. A stirring plate is provided at the lower end of the stirring shaft. The stirring plate has a through hole. The drive motor is used to drive the electric slide table so that the slider drives the stirring shaft to move vertically. A pipetting mechanism includes an electric telescopic rod, a peristaltic pump, and a pipette. The electric telescopic rod is vertically mounted on the frame, the pipette is vertically mounted on the output end of the electric telescopic rod, and the peristaltic pump is connected to the pipette. The rotary platform includes a servo motor, a rotary table, a stirring container, and a pipetting container. The rotary table is mounted on the servo motor. A first container seat is located below the stirring shaft on the rotary table, and a second container seat is located below the pipette on the rotary table. The stirring container is detachably mounted on the first container seat, and the pipetting container is detachably mounted on the second container seat. The servo motor is used to drive the rotary table to rotate, so that the stirring container switches between being below the stirring shaft and below the pipette.

2. The fully automated sampling device for solid samples as described in claim 1, characterized in that: The first container seat is disposed on the extension line of the stirring shaft, and the second container seat is disposed on the extension line of the straw.

3. The fully automated sampling device for solid samples as described in claim 1, characterized in that: The rotary table rotates 180° to switch the first container seat and the second container seat between below the stirring shaft and below the straw.

4. The fully automated sampling device for solid samples as described in claim 1, characterized in that: Both the first container seat and the second container seat are cylindrical sleeves.

5. The fully automated sampling device for solid samples as described in claim 1, characterized in that: The stirring container is a graduated cylinder, and the pipetting container is a beaker.

6. The fully automated sampling device for solid samples as described in claim 1, characterized in that: The pipetting mechanism also includes a liquid level sensor, which is mounted on the pipette.

7. The fully automated sampling device for solid samples as described in claim 1, characterized in that: It also includes a controller connected to the drive motor, the electric telescopic rod, the peristaltic pump, and the servo motor. The controller is used to control the drive motor to drive the electric slide to move the stirring shaft up and down in the stirring container; the servo motor to drive the rotary table to rotate so that the stirring container rotates below the pipette; the electric telescopic rod to drive the pipette to insert into the stirring container; the peristaltic pump to draw the solution in the stirring container through the pipette; and the servo motor to drive the rotary table to rotate so that the pipette rotates below the pipette, and the peristaltic pump to discharge the solution in the pipette into the pipette.

8. The fully automated sampling device for solid samples as described in claim 7, characterized in that: The controller is a 51 microcontroller.

9. The fully automated sampling device for solid samples as described in claim 1, characterized in that: A displacement sensor is provided at the lower end of the electric slide.

10. The fully automated sampling device for solid samples as described in claim 1, characterized in that: It also includes a base, the servo motor is fixed on the base and its output shaft is vertically upward and connected to the rotary table, and the frame is fixed on the base.

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