Rapid and accurate sampling device and control method

Abstract

The invention discloses a rapid and accurate sampling device and a control method, and relates to the technical field of sampling. The device comprises a sampling bin, a sample container, a control module and a power supply module, and rapid and accurate sample collection is realized through a high-precision sensor. The control method comprises the steps of parameter setting, sampling operation, data transmission and data analysis, sampling parameters can be monitored and adjusted in real time, and the sampling precision is ensured. The method has the advantages of high sampling speed, high precision and simplicity in operation, and is suitable for the fields of environmental monitoring, industrial production, laboratory analysis and the like.

Description

Technical Field

[0001] The present invention relates to the field of sampling technology, and in particular to a fast and accurate sampling device and a control method. Technical Background

[0002] This example relates to sampling for raw material inspection, specifically, it relates to a sampling mechanism for a belt feeding system, and further, it relates to a raw material sampling device and an automatically controlled sampling method.

[0003] For the quality inspection of raw materials entering the factory, the sampling process is particularly important. Whether the sampling process and sampling actions are standard directly affects the fairness and representativeness of subsequent test data.

[0004] When the purchased alloy raw materials enter the factory, we first randomly select sampling bags from each car of packaged raw materials, then open the sample bags and convey them to the screening machine by belt. During the transportation, a certain amount of raw materials needs to be randomly collected and stored in the receiving container for sealing. At present, the sampling operation cabinet of the original equipment body is set under the sampling device, and the sampling device is normally open, so blocks of materials will fall during the belt conveying process. During the loading process, the operator is required to stand at the sampling position and manually operate the button to control the grabbing of the material. The sampling time, sampling times, and sampling quantity are all manually intervened. This sampling method not only reduces work efficiency, but also affects the test results.

[0005] 2.1 Existing technical solutions directly related to this transformation

[0006] 2.1.1 Contents of existing technical solutions

[0007] 1) The feeding port of the sampling device is normally open, and no baffle is designed;

[0008] 2) During the loading process, the sampling personnel are required to stand under the sampling device and press the sampling button several times;

[0009] 3) The sampling process requires the operator to decide the sampling time, sampling times, and sampling quantity;

[0010] 4) When sampling, the operator needs to manually control the material taking device to take samples;

[0011] 5) Sampling of different bags requires human judgment;

[0012] 6) Sampling records need to be written by the operator and then placed in the storage container.

[0013] 7) Sampling information transmission: when the material receiving and sample preparation personnel take samples from the storage container, they need to verify the sample information and enter it into the inspection and testing management.

[0014] 2.1.2 Deficiencies of existing technical solutions

[0015] 1) There is no baffle plate at the discharge port of the sampling device, and blocks of material may fall off during the belt conveying process;

[0016] 2) The sampling process is supervised by personnel from multiple departments and the sampling is manually controlled, which results in low work efficiency and potential safety hazards;

[0017] 3) The frequency and quantity of sampling require the intervention of operators, which affects the accuracy and representativeness of the information;

[0018] 4) Manually recording information has the potential for error;

[0019] 6) The transmission of paper records of sampling information is not conducive to the improvement of information management.

[0020] 2.2 Details of this technical solution

[0021] 2.2.1 The technical problem that this invention aims to solve, that is, the purpose of this transformation

[0022] This example solves the following technical problems by modifying the equipment and main control system:

[0023] 1) Add a material baffle in the middle of the sampling device to prevent the material blocks from scattering;

[0024] 2) Add a manual control button for the sampling device to the system control cabinet and remove the independent power distribution control button under the sampling device.

[0025] Make cabinets;

[0026] 3) Add a sampling and metering electronic scale and connect it to the equipment main control system. The sampling measurement collection and statistics are completed by PLC;

[0027] 4) The scraper and baffle are changed from a single manual mode to a manual and automatic dual mode;

[0028] 5) The automatic control of the scraper and the baffle is completed by PLC;

[0029] 6) The equipment control system collects the bag arrival signal and automatically starts the sampling device;

[0030] 7) Standardized management of sampling: set the sampling standards according to the process requirements on the display screen of the distribution cabinet;

[0031] 8) The automatic control system strictly completes automatic sampling according to the set sampling standards to avoid human intervention;

[0032] 9) The setting and maintenance of sampling standards are authorized by the system;

[0033] 10) Automatically generate and save sampling information, which is conducive to the cross-platform and cross-system access of sampling information;

[0034] 11) Print the label code containing the sampling information, and the sample preparation personnel can scan the code to obtain the sampling information;

[0035] 12) Get rid of manual records and paper delivery and improve management level. Summary of the invention

[0036] 3.1 Process technology solution

[0037] The technical problem to be solved in this example is to provide "a quick and accurate sampling device and control method". The sampling device has a safety baffle plate, and the sampling device can realize the functions of automatic sampling of raw materials and automatic printing of sampling labels.

[0038] "A quick and accurate sampling device and control method", the system composition includes: loading area, conveyor belt, sampling device, unloading area.

[0039] The automatic sampling device is arranged between the feeding device and the screening device, and comprises a sampling bin and a sample container.

[0040] The upper port of the sampling bin is communicated with the conveyor belt, wherein a sampling shovel (1) and a material blocking valve (2) are installed. A sample container (3) is provided below the discharge port of the sampling bin, and an electronic scale (4) is provided below the sample container (3).

[0041] The working state of the sampling device is controlled by PLC. When the conveyor belt device is abnormal, the sampling device does not work. The sampling standard can be set and maintained on the touch screen of the system power distribution cabinet.

[0042] Depends on the sampling criteria.

[0043] The sampling frequency and sampling quantity of the sampling device are controlled by PLC according to the set sampling standard. The system collects electronic scale data and counts the collected amount. If the total amount collected in each bag does not meet the standard requirements, additional shoveling sampling should be carried out.

[0044] The "device and control method for quick and accurate sampling" also includes transcoding and printing the sampling information.

[0045] When the incoming raw materials arrive at the warehouse, the purchase contract information and transportation information have been stored in the company's MES system, "Sampling Label Printing"

[0046] The function binds the sampling results with the raw material arrival order number to generate a barcode for the user to print and seal into the sample container.

[0047] 3.2 Sampling control process

[0048] 1) The system detects the status of the equipment. When the shovel or baffle of the sampling fails, the "manual mode" can be used;

[0049] 2) Set the quantity of raw materials (number of bags) and sampling requirements for each batch on the system main control screen.

[0050] (“Parameter settings” can be set according to process requirements: sampling interval time, sampling quantity);

[0051] 3) The system automatically controls the action of the scraper and baffle according to the set sampling standards;

[0052] 4) The sampled material falls into the sample container;

[0053] 5) Measurement;

[0054] 6) Determine whether the sampling volume meets the sampling requirements;

[0055] 7) If the quantity is insufficient, automatically increase the sampling times;

[0056] 8) Automatically detect whether sampling is completed based on the number of bags in each batch;

[0057] 9) When sampling of each batch is completed, store sampling information and print sampling labels; BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a schematic diagram of the structure of the original body equipment of the present invention;

[0059] Figure 2 It is a schematic diagram of the structure of the modified system equipment of the present invention;

[0060] Figure 3 It is a sampling device-system control block diagram of the present invention;

[0061] Figure 4 It is a sampling control flow chart of the present invention;

[0062] Figure 5 This is the automatic sampling electrical control principle diagram of the present invention; DETAILED DESCRIPTION

[0063] 1) The equipment control system collects the bag arrival signal and automatically starts the sampling device, reducing the number of supervisory personnel;

[0064] 2) Set sampling standards according to process requirements, and the system will automatically sample to make sampling management accurate and efficient.

[0065] 3) The sampling process eliminates human involvement, which provides a guarantee for subsequent processes and makes the inspection data fair, equitable, accurate and more representative.

[0066] 4) Reduce manual operations, alleviate labor intensity, and improve the intelligence level of the company's quality inspection management.

[0067] 5.1 Key points of the technical solution of the present invention

[0068] 1) The system provides a sampling standard setting interface, which is convenient, flexible and highly operable;

[0069] 2) The equipment system automatically determines different packaging materials;

[0070] 3)PLC control, automatic sampling according to set standards;

[0071] 4) The system prints a label containing sampling information;

[0072] 5) The sampling information contained in the sampling label code is recorded in the database;

[0073] 6) The sampling information can be flexibly accessed across platforms and systems, and is authentic and reliable.

Claims

1. A sampling mechanism for a belt feeding system, comprising an additional baffle plate, a control cabinet, an additional manual control button, a metering electronic scale, and a shovel.

2. In claim 1, a new function of a material baffle is added, which is characterized by preventing sample blocks from scattering.

3. In claim 1, the manual control button added to the control cabinet is characterized by remote control.

4. The function of the measuring electronic scale in claim 1 is characterized in that the sampled samples can be measured and fed back remotely.

5. In claim 1, the PLC completes the coordination between the scraper and the baffle plate, and realizes the switching between automatic and manual working modes.

6. In claim 1, the sampling standard can be set in the control cabinet, and its maintenance and modification operations require prior authorization by the system.

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