Multi-sample division sample preparation device

Abstract

The multi-sampling splitting sample preparation device comprises a feeding structure, a sample splitting structure and a conveying structure for conveying a to-be-sampled material from the feeding structure to the sample splitting structure, the sample separation structure comprises a sample separation cabinet, a first transmission pipeline and a second transmission pipeline which extend out of the sample separation cabinet, a rotary sampling structure corresponding to the first transmission pipeline, and a moisture sample sampling box and a sample rejecting box which correspond to the second transmission pipeline; materials to be sampled are mixed and weighed in the feeding structure, then conveyed to the sample separating cabinet through the conveying structure, discharged through the first conveying pipeline and the second conveying pipeline after being crushed and divided in the sample separating cabinet, and respectively fall into the rotary sampling structure, the moisture sample sampling box and the sample discarding box. By arranging the rotary sampling structure, the moisture sample sampling box and the rejected sample box, multiple kinds of sampling can be synchronously completed.

Description

Technical Field

[0001] The utility model belongs to the field of sample reduction and preparation, and particularly relates to a multi-sampling sample reduction and preparation device. Background Art

[0002] Sample reduction and preparation is one of the key steps in sample processing, and is widely used in multiple industries such as minerals, metallurgy, building materials, chemical industry, environmental monitoring, food inspection, etc. Its main purpose is to extract a small amount of representative samples from a large amount of raw materials through scientific methods for further physical and chemical analysis or testing. This process requires maintaining the uniformity and representativeness of the samples to ensure that the analysis results can accurately reflect the characteristics of the overall materials. Sample reduction and preparation usually includes links such as crushing, mixing, sample division, and weight reduction, and each step has a direct impact on the quality of the final sample.

[0003] The sample reduction and preparation technology plays an important role in multiple fields: Mineral resource assessment: Before analyzing the ore grade, it is necessary to ensure that the sample can represent the entire ore body through sample reduction and preparation; Building material testing: For quality control of building materials such as cement and sand and gravel, it is necessary to obtain standard specimens through sample reduction for strength testing; Environmental protection monitoring: For the treatment of soil and water quality samples, to ensure the accuracy of pollution monitoring data; Food and drug safety: Before large-scale production or during quality control, sample reduction and preparation are carried out on raw materials and finished products to ensure food safety; Scientific research and education: Provide standardized samples for experimental research to ensure the repeatability and accuracy of experimental results.

[0004] Existing sample reduction and preparation devices can only complete single-type sample preparation tasks, such as only being able to perform simple crushing or sample division, and cannot meet the diverse needs of users for sample processing. For example, when it is necessary to prepare samples of different particle sizes simultaneously, multiple devices often need to be used in cooperation, increasing the operation complexity and cost; Most devices rely on manual operation, and multiple steps from sampling to the final sample preparation process cannot be fully automated, which is not only inefficient but also may lead to human errors, affecting the representativeness of the samples; Existing devices often lack a design that integrates multiple functions such as weighing, crushing, and sample preparation, resulting in the need to transfer samples multiple times during the sample processing flow, increasing the risk of sample contamination and loss, and also prolonging the processing time.

[0005] Furthermore, existing sample reduction and preparation devices are often designed to obtain single-purpose samples, such as only focusing on analytical samples or moisture samples, and fail to meet the preparation requirements of multiple types of samples such as analytical samples, archived samples (samples for storage), and moisture samples in one sample preparation process. This means that in order to complete comprehensive detection and analysis work, laboratory or on-site operators have to perform multiple independent sample preparation operations on the same batch of materials, which not only wastes time and resources but also may introduce more variations due to multiple treatments, affecting the consistency and representativeness of the samples. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a multi-sampling and sample reduction device to solve the technical problem of simultaneously preparing multiple types of samples.

[0007] To achieve the above purpose, the specific technical solution of a multi-sampling and sample reduction device of the present utility model is as follows:

[0008] A multi-sampling and sample reduction device includes a feeding structure, a sample splitting structure, and a transmission structure for conveying the material to be sampled from the feeding structure to the sample splitting structure; the sample splitting structure includes a sample splitting cabinet, a first transmission pipe and a second transmission pipe extending from the sample splitting cabinet, a rotary sampling structure corresponding to the first transmission pipe, a moisture sample sampling box and a waste sample box corresponding to the second transmission pipe; the material to be sampled is mixed and weighed in the feeding structure and then conveyed to the sample splitting cabinet through the transmission structure, broken and reduced in the sample splitting cabinet and then discharged through the first transmission pipe and the second transmission pipe, and respectively fall into the rotary sampling structure, and the moisture sample sampling box and the waste sample box.

[0009] As a further improvement of the present utility model, the sample preparation device further includes a control structure for realizing the electric control of the sampling device, and the control structure controls the reduction amount of the sample splitting structure by inputting the sampling quantity and / or sampling ratio.

[0010] As a further improvement of the present utility model, the feeding structure includes a feeding bin with an upward opening for putting the material to be sampled, and a weighing structure; the weighing structure feeds back the weight data to the control structure.

[0011] As a further improvement of the present utility model, the upper end of the sample splitting cabinet is provided with a feeding port communicated with the transmission structure, the lower end of the feeding port is connected to a first crushing device, the discharge port of the first crushing device is connected to a first sample reduction device, the lower end of the first sample reduction device is provided with a first discharge port and a second discharge port, the first discharge port is connected to a second crushing device, the second discharge port is connected to the second transmission pipe, and the discharge port of the second crushing device is connected to the first transmission pipe.

[0012] As a further improvement of the present utility model, the rotary sampling structure includes a sampling base, a sampling box arranged on the sampling base, and a rotary driving device for driving the sampling box to rotate; the sampling box is a box-shaped structure with an upward opening and is evenly divided into several sampling compartments; the rotary driving device drives the sampling box to rotate uniformly relative to the sampling base, and the material to be sampled falls into the sampling compartments from above through the first transmission pipe.

[0013] As a further improvement of the present utility model, the sampling box is circular, and the sampling compartments are a number of sector areas formed by equally dividing several diameters passing through the center of the circle.

[0014] As a further improvement of the present utility model, a second splitting device is provided at the discharging end of the second transmission pipeline. The discharging ports of the second splitting device include a moisture sample discharging port and a reject sample discharging port, corresponding to the moisture sample sampling box and the reject sample box respectively; when the quantity of the moisture samples reaches the preset requirement, the second splitting device closes the moisture sample discharging port.

[0015] As a further improvement of the present utility model, the first crushing device is a hammer-knife type crushing device, and the second crushing device is a double-roll type crushing device.

[0016] As a further improvement of the present utility model, the first splitting device is a fixed-ratio splitter.

[0017] As a further improvement of the present utility model, the second splitting device is a fixed-mass splitter.

[0018] Advantageous effects:

[0019] The device of the present application integrates feeding, weighing, crushing, splitting, and sample division, and can synchronously obtain various types of samples such as analysis samples, differential storage samples, and moisture samples within a single operation cycle, greatly optimizing the sample preparation process, saving labor and time costs, and improving the overall work efficiency.

[0020] The built-in control structure can accurately control the splitting quantity of the sample division structure according to the sampling quantity and ratio set by the user, ensuring the representativeness and consistency of each sampling. At the same time, through the real-time feedback of weight data, the accuracy and reliability of sample processing are further improved.

[0021] The modular design of feeding, crushing, and splitting, especially the combined use of the hammer-knife type and double-roll type crushing devices, as well as the application of the fixed-ratio and fixed-mass splitters, enables the device to adapt to materials with different physical properties, meet diverse sample preparation requirements, and enhance the versatility and adaptability of the system.

[0022] From the mixing and weighing of materials to the automatic distribution of samples, the whole process is highly automated, reducing the intervention of manual operations, reducing human errors, ensuring the standardization of sample processing, and improving the comparability and repeatability of experimental data.

[0023] The innovative design of the rotary sampling structure and the fixed-mass splitter, especially the sector division of the rotary sampling box, not only realizes the effective utilization of space but also ensures the uniform distribution of samples. At the same time, the second splitting device can be dynamically adjusted to avoid over-sampling, optimizing the material management and resource utilization.

[0024] Through integrated design, material loss and environmental pollution during the sample processing are reduced. At the same time, automated operation also improves operation safety and reduces potential work injury risks.

[0025] In summary, the multi-sampling and sample reduction device of the present utility model, with its significant advantages in improving sample processing efficiency, ensuring sample quality, enhancing system flexibility and intelligence level, etc., has brought revolutionary progress to the sample preparation work in multiple fields such as geology, chemical industry, and food, and has important practical value and broad market application prospects. Brief Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a multi-sampling and sample reduction device of the present utility model;

[0027] Figure 2 It is a schematic diagram of the sample splitting structure;

[0028] Figure 3 It is a cross-sectional view of the sample splitting cabinet structure;

[0029] Figure 4 It is a schematic diagram of the structure of the second transmission pipeline, moisture sample sampling box, and waste sample box;

[0030] Figure 5 It is a schematic diagram of the rotary sampling structure;

[0031] Explanation of the marks in the figure: 1000, feeding structure; 1100, feeding bin; 2000, transmission structure; 3000, sample splitting structure; 3100, sample splitting cabinet; 3110, feeding port; 3120, first crushing device; 3130, first sample reduction device; 3131, first discharge port; 3132, second discharge port; 3140, second crushing device; 3200, first transmission pipeline; 3300, second transmission pipeline; 3310, second sample reduction device; 3311, moisture sample discharge port; 3312, waste sample discharge port; 3400, rotary sampling structure; 3410, sampling base; 3420, sampling box; 3421, sampling compartment; 3430, rotary driving device; 3500, moisture sample sampling box; 3600, waste sample box; 4000, control structure. Detailed Description of the Preferred Embodiment

[0032] To deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. The embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0033] Embodiment Example:

[0034] Such as Figure 1In a multi-sampling and sample reduction device shown, a feeding structure 1000 is used to place the material to be sampled. After the material to be sampled is weighed in a feeding bin 1100, it is conveyed to a sample splitting structure 3000 through a conveying structure 2000. The material to be sampled is conveyed to a rotary sampling structure 3400, a moisture sample sampling box 3500, and a reject sample box 3600 respectively after being crushed in a sample splitting cabinet 3100. A control structure 4000 drives the sample preparation device uniformly. In this embodiment, the control structure 4000 is a touch screen structure. By manually inputting preset values of the sampling quantity and sampling ratio, and simultaneously controlling the opening and closing of all motors, the conveying of materials in the sample preparation device is realized.

[0035] As Figure 2 shown, in the sample splitting structure 3000, a feeding port 3110 at the upper end of the sample splitting cabinet 3100 is communicated with the discharging port of the conveying structure 2000. A first conveying pipe 3200 extends above the rotary sampling structure 3400 from the sample splitting cabinet 3100, and a second conveying pipe 3300 extends above the moisture sample sampling box 3500 and the reject sample box 3600 from the sample splitting cabinet 3100. The sampled materials fall into the sampling box 3420, the moisture sample sampling box 3500, and the reject sample box 3600 respectively.

[0036] As Figure 3 shown, a feeding port 3110 is opened at the top of the sample splitting cabinet 3100. The feeding port 3110 is communicated with the conveying structure 2000 to introduce the material to be sampled into the sample splitting cabinet 3100. A first crushing device 3120 is connected to the lower end of the feeding port 3110. In this embodiment, the first crushing device 3120 is a hammer-knife type crushing device. The material to be sampled enters the crushing cavity from above, and the high-speed rotating hammer-knives impact the material with great kinetic energy, so that the material is broken into smaller particles. The screening mesh below allows the particulate materials that meet the requirements to pass through. The material to be sampled after the first crushing enters a first sample reduction device 3130. In this embodiment, the first sample reduction device 3130 is a fixed-ratio sample divider, and the material to be sampled is discharged into a second crushing device 3140 and a second conveying pipe 3300 respectively through a first discharging port 3131 and a second discharging port 3132 according to a preset ratio. The material entering the second conveying pipe 3300 is conveyed to a second sample reduction device 3310. In this embodiment, the second crushing device 3140 is a double-roll type crushing device. The material enters the crushing cavity and is crushed by two parallel cylindrical rollers pressing against each other. The material to be sampled after the secondary crushing is conveyed to the rotary sampling structure 3400 through a first conveying pipe 3200.

[0037] As Figure 4As shown, a second reducing device 3310 is provided at the discharging end of the second transfer pipeline 3300. After passing through the second reducing device 3310, the material to be sampled falls into the moisture sample sampling box 3500 and the reject sample box 3600 from the corresponding moisture sample discharging port 3311 and the reject sample discharging port 3312 respectively. In this embodiment, the second reducing device 3310 is a fixed mass reducer, and the moisture sample is collected according to a preset weight. When the quantity of the moisture sample is sufficient, the moisture sample discharging port 3311 is closed, and subsequent discharged materials all enter the reject box 3600.

[0038] As Figure 5 As shown, the sampling base 3410 of the rotary sampling structure 3400 is placed on the ground, the sampling box 3420 is arranged on the sampling base 3410, the rotary driving device 3430 is arranged inside the sampling base 3410, passes through the sampling base 3410 and is connected to the sampling box 3420 to drive the sampling box 3420 to rotate. In this embodiment, the rotary driving device 3430 is a motor structure driven by the control structure 4000. The sampling box 3420 is a circular box shape with an upward opening, symmetrically divided into 8 unified fan-shaped sampling intervals 3421. The material to be sampled conveyed in the first transfer pipeline 3200 falls into the sampling intervals 3421 from above. The sampling box 3420 rotates at a constant speed, and material samples are evenly obtained from the continuously falling materials, ensuring the representativeness of the samples and realizing the acquisition of samples such as analysis samples and archived samples.

[0039] It can be understood that the present utility model is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A multi-sampling and sample reduction device, characterized in that, It includes a feeding structure, a sample dividing structure, and a transmission structure for conveying the material to be sampled from the feeding structure to the sample dividing structure; The sample dividing structure includes a sample dividing cabinet, a first transmission pipe and a second transmission pipe extending from the sample dividing cabinet, a rotary sampling structure corresponding to the first transmission pipe, a moisture sample sampling box and a waste sample box corresponding to the second transmission pipe; The material to be sampled is mixed and weighed in the feeding structure and then conveyed to the sample dividing cabinet through the transmission structure. After being crushed and reduced in the sample dividing cabinet, it is discharged through the first transmission pipe and the second transmission pipe, and falls into the rotary sampling structure, the moisture sample sampling box and the waste sample box respectively.

2. The multi-sampling and sample reduction sample preparation device according to claim 1, wherein It also includes a control structure for realizing the electric control of the sampling device. The control structure controls the reduction amount of the sample dividing structure by inputting the sampling quantity and / or sampling ratio.

3. The multi-sampling and sample-reducing device according to claim 2, wherein The feeding structure includes a feeding bin with an upward opening for putting the material to be sampled, and a weighing structure; the weighing structure feeds back the weight data to the control structure.

4. The multi-sampling and reduction sample preparation device according to claim 1, wherein The upper end of the sample dividing cabinet is provided with a feed inlet communicated with the transmission structure. The lower end of the feed inlet is connected to a first crushing device. The discharge port of the first crushing device is connected to a first reduction device. The lower end of the first reduction device is provided with a first discharge port and a second discharge port. The first discharge port is connected to a second crushing device. The second discharge port is connected to the second transmission pipe. The discharge port of the second crushing device is connected to the first transmission pipe.

5. The multi-sampling and quartering sample preparation device according to claim 1, characterized in that The rotary sampling structure includes a sampling base, a sampling box arranged on the sampling base, and a rotary driving device for driving the sampling box to rotate; the sampling box is a box-shaped structure with an upward opening and is evenly divided into several sampling compartments; the rotary driving device drives the sampling box to rotate uniformly relative to the sampling base, and the material to be sampled falls into the sampling compartments from above through the first transmission pipe.

6. The multi-sampling and sample-reducing device according to claim 5, characterized in that, The sampling box is circular, and the sampling compartments are several fan-shaped areas formed by equally dividing several diameters passing through the center of the circle.

7. The multi-sampling and sample-reducing device according to claim 1, wherein The discharge end of the second transmission pipe is provided with a second reduction device. The discharge ports of the second reduction device include a moisture sample discharge port and a waste sample discharge port, corresponding to the moisture sample sampling box and the waste sample box respectively; when the quantity of the moisture sample reaches the preset requirement, the second reduction device closes the moisture sample discharge port.

8. The multi-sampling and reduction sample preparation device according to claim 4, wherein, The first crushing device is a hammer knife type crushing device, and the second crushing device is a double roll type crushing device.

9. The multi-sampling and sample-reducing sample preparation device according to claim 4, wherein The first reduction device is a fixed ratio reducer.

10. The multi-sampling and sample reduction sample preparation device according to claim 7, wherein The second reduction device is a fixed mass reducer.

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