Multi-point sampler for grain samples
The multi-point sampler addresses uneven toxin distribution in grain samples by employing a sampling plate with multiple openings and trays, achieving efficient and accurate sampling through sequential reductions, thereby improving representativeness and reducing labor and time.
Patent Information
- Application Number
- CN202420776127.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-15
AI Technical Summary
Fungal toxins in grain samples are unevenly distributed, leading to difficulties in ensuring representativeness and efficiency in sample mixing, especially during harvesting, due to increased viscosity and long mixing times in current mixers.
A multi-point sampler with a sampling plate featuring multiple openings and sampling tubes, accompanied by sampling trays, allows for multi-point sampling through sequential reductions to achieve accurate and efficient sampling.
The multi-point sampler enhances sampling efficiency and accuracy, reducing labor and time significantly while ensuring representative results, with a precision of 8.8% within 10 minutes, meeting standard requirements.
Smart Images
Figure CN222299239U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grain sampling, in particular to a multi-point sampler for grain samples. Background Art
[0002] In grain and feed samples, fungal toxins are unevenly distributed in the grain, especially in poisoned grains. After crushing, the viscosity of the samples increases, making it difficult to ensure the representativeness of the samples. The current mixers have disadvantages such as long mixing time, inconvenience for use at the harvesting site, and low efficiency. In order to improve production efficiency, accurately grasp the test results, and truly and objectively reflect the quality of grain, a multi-point sampler was developed. Utility Model Content
[0003] The utility model aims to provide a multi-point sampler for grain samples, which has the effects of high efficiency, time and labor saving, and accurate and reliable detection results.
[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a multi-point sampler for grain samples, including a sampling plate, on which multiple rows and columns of openings are evenly arranged, and sampling tubes matching the shapes of the openings are fixedly installed on several of the openings, and the sampling plate is provided with two sampling trays, which match the shapes of the sampling plate, and the sampling trays cover the sampling plate and the sampling tubes.
[0005] By adopting the above technical solution, the preliminarily mixed sample is poured into a sampling tray, i.e., the lower sampling tray, and the lower sampling tray is gently shaken on a plane so that the sample is spread flat in the lower sampling tray, and the sampling tube on the sampling plate is inserted into the lower sampling tray, and the sampling plate is evenly pressed to the bottom so that the sample in the lower sampling tray enters the sampling tube, and another sampling tray, i.e., the upper sampling tray, is buckled, and then both hands are picked up, the sampler is reversed, and the sampling plate and the lower sampling plate are removed to complete a multi-point sampling, and the sampled sample is poured into other containers, and in this way, the second sampling is performed to complete the first sample reduction (a total of two samplings). The other half of the sample after the first reduction is discarded, and the second or third reduction is started, and the above steps are repeated for sampling, and the reduction is performed step by step until the sample is divided to the required mass, and the reduced sample is poured into a sealed bag to complete the multi-point sampling.
[0006] The utility model is further configured as follows: a sealing strip is fixedly installed on the edge of the sampling plate close to one side of the sampling tube.
[0007] By adopting the above technical solution, the sealing strip can prevent the sample from spilling out when turning over, causing pollution to the sampling environment and affecting the accuracy of sampling.
[0008] The utility model is further configured as follows: the horizontal projection area of the sampling plate is larger than the horizontal projection area of the sampling disc.
[0009] By adopting the above technical solution, the sampling plate is larger than the sampling tray, so it is convenient to take out the sampling plate.
[0010] The utility model is further configured as follows: the sampling tray comprises a bottom plate and a frame surrounding the edge of the bottom plate.
[0011] By adopting the above technical solution, the sampling tray is used to hold and shake the sample at the same time.
[0012] The utility model is further configured as follows: the height of the frame is the same as the height of the sampling tube.
[0013] By adopting the above technical solution, the height of the sampling tube is the same as the height of the frame, so that the sampling tube can be inserted into the bottom of the sampling tray, and the sampling is more accurate.
[0014] The utility model is further configured as follows: a plurality of limit strips are provided on the edge of the sampling plate away from the sampling tube.
[0015] The utility model is further configured as follows: when the sampling tray covers the sampling plate, the frame and a plurality of the limiting strips are in conflict with one side close to the opening.
[0016] By adopting the above technical solution, when the sampling disc covers the sampling plate, the limit strip is provided to prevent the sampling disc from moving when the sampler is turned over, thereby preventing the detection result from being affected.
[0017] The utility model is further configured as follows: an operation panel is provided on at least one pair of opposite sides of the frame.
[0018] The utility model is further configured as follows: the operation panel is located in the middle of the frame.
[0019] The utility model is further configured as follows: the edge of the operating panel is arc-shaped.
[0020] By adopting the above technical solution, the operation panel makes it convenient for the sampler to flip the sampler, and also makes it convenient for the sampler to shake the sample and spread the sample evenly on the sampling plate.
[0021] The beneficial effects of the utility model are:
[0022] 1. High efficiency, time-saving and labor-saving. According to field verification, it only takes 11 minutes to complete multi-point sampling of 0.5kg by manual mixing, and only 13 minutes to complete multi-point sampling of 1kg by electric mixing. Compared with the one hour required for traditional electric mixing, the production efficiency is greatly improved by using a multi-point sampler; compared with the 30 minutes required for traditional manual mixing, the labor intensity is greatly reduced.
[0023] 2. The sampling is more representative. The multi-point sampler mixes twice and reduces the sample to 60-120g. Each reduction is equivalent to sampling 8*11*2=176 points, and a total of 3 reductions are performed.
[0024] 3. The test effect is good. After 10 minutes of electric mixing, 5 samples are taken using a multi-point sampler for testing. The precision is 8.8%, which meets the standard requirement of ≤10%. The test results are accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0026] Figure 1 It is a schematic diagram of the structure of the utility model.
[0027] Figure 2 It is a schematic diagram of the structure of the utility model.
[0028] Figure 3 It is a schematic diagram of the structure of the sampling plate of the utility model.
[0029] In the figure, 1. sampling plate; 2. opening; 3. sampling tube; 4. sampling tray; 41. bottom plate; 42. frame; 5. sealing strip; 6. limit strip; 7. operation panel. DETAILED DESCRIPTION
[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] like Figure 1-3 As shown, the multi-point sampler for grain samples includes a sampling plate 1, which is made of square metal. The sampling plate 1 has 8 rows and 11 columns of openings 2 neatly arranged on it. A sampling tube 3 matching the shape of the opening 2 is welded on each opening 2. The inner diameter of the sampling tube 3 is the same as the inner diameter of the opening 2. A sealing strip 5 is fixedly installed on the edge of the sampling plate 1 close to the sampling tube 3, and a limiting strip 6 is provided on the edge of the sampling plate 1 away from the sampling tube 3.
[0032] The sampling plate 1 is equipped with two sampling trays 4, which include a bottom plate 41 and a frame 42 surrounding the edge of the bottom plate 41. The height of the frame 42 is the same as the height of the sampling tube 3. An operation panel 7 is provided on the outer side of the frame 42. The operation panel 7 is located in the middle of the frame 42, and the edge of the operation panel 7 is arc-shaped.
[0033] The sampling tray 4 matches the shape of the sampling plate 1, and the horizontal projection area of the sampling plate 1 is larger than the horizontal projection area of the bottom plate 41. When the sampling tray 4 covers the sampling plate 1, the frame 42 and the limiting strips 6 are in conflict with the side close to the opening 2, and the sampling tray 4 covers the sampling plate 1 and the sampling tube 3.
[0034] Operation method of this grain sample multi-point sampler:
[0035] Step 1: Pre-mix the samples manually or with an electric mixer. Manual preliminary mixing: Pour 0.5kg of the crushed sample into a plastic sealed bag, inflate and seal it, then turn it over and over by hand for at least 5 minutes; Pour 1.0kg of the crushed sample into an electric mixer and mix it for at least 15 minutes. At this point, the sample is still not evenly mixed.
[0036] Step 2: Pour the preliminarily mixed sample into a sampling tray 4, i.e., the lower sampling tray 4, and gently shake the lower sampling tray 4 on a plane to spread the sample flat in the lower sampling tray 4, insert the sampling tube 3 on the sampling plate 1 into the lower sampling tray 4, and evenly press the sampling plate 1 to the bottom to make the sample in the lower sampling tray 4 enter the sampling tube 3, and buckle another sampling tray 4, i.e., the upper sampling tray 4. At this time, pick it up with both hands, turn the sampler upside down, remove the sampling plate 1 and the lower sampling plate 1, and complete a multi-point sampling. Pour the sampled sample into other containers, and use this method to perform the second sampling to complete the first sample reduction (a total of two samplings).
[0037] Discard the other half of the sample after the first reduction, start the second or third reduction, repeat the above steps to take samples, and reduce the samples step by step until the sample reaches the required mass, pour the reduced samples into a sealed bag, inflate and mix for 3 minutes, and this sample is the sample for machine detection.
Claims
1. Grain sample multi-point sampler, characterized by: The invention comprises a sampling plate (1), wherein the sampling plate (1) is evenly provided with a plurality of rows and columns of openings (2), and a plurality of the openings (2) are fixedly mounted with sampling tubes (3) whose shapes match those of the openings (2). The sampling plate (1) is provided with two sampling trays (4), wherein the sampling trays (4) match the shapes of the sampling plate (1), and the sampling trays (4) cover the sampling plate (1) and the sampling tubes (3).
2. The multi-point sampler for grain samples according to claim 1, characterized in that: A sealing strip (5) is fixedly mounted on the edge of the sampling plate (1) on one side close to the sampling tube (3).
3. The grain sample multi-point sampler according to claim 1, characterized in that: The horizontal projection area of the sampling plate (1) is larger than the horizontal projection area of the sampling disc (4).
4. The multi-point sampler for grain samples according to claim 1, characterized in that: The sampling plate (4) comprises a bottom plate (41) and a frame (42) surrounding the edge of the bottom plate (41).
5. The multi-point sampler for grain samples according to claim 4, characterized in that: The height of the frame (42) is the same as the height of the sampling tube (3).
6. The grain sample multi-point sampler according to claim 4, characterized in that: A plurality of limiting strips (6) are provided on the edge of the sampling plate (1) away from the sampling tube (3).
7. The multi-point sampler for grain samples according to claim 6, characterized in that: When the sampling tray (4) covers the sampling plate (1), the frame (42) and a plurality of the limiting strips (6) are in conflict with one side close to the opening (2).
8. The multi-point sampler for grain samples according to claim 4, characterized in that: At least one pair of opposite sides of the frame (42) is provided with an operating panel (7).
9. The multi-point sampler for grain samples according to claim 8, characterized in that: The operating panel (7) is located in the middle of the frame (42).
10. The multi-point sampler for grain samples according to claim 8, characterized in that: The edge of the operating panel (7) is arc-shaped.