A weighing tray for measuring the thousand-grain weight of millet and millet

Abstract

This utility model discloses a weighing tray for determining the thousand-grain weight of millet and foxtail millet, belonging to the technical field of agricultural crop testing auxiliary instruments. The weighing tray includes a supporting tray and a T-shaped compactor; the supporting tray has a square structure, with a 10×10 array of square measuring grids evenly distributed on its inner bottom surface. Each measuring grid has a side length of 1 cm, totaling 100 measuring grids. This utility model uses a dedicated compactor to flatten the grains into a single layer, and combined with the grid partitioning structure, it enables quadrat sampling and counting. When used with an electronic balance, the thousand-grain weight can be calculated. This device has a simple structure and is easy to operate, effectively improving the problems of large errors, low efficiency, and cumbersome operation of traditional manual grain counting methods. It significantly improves the accuracy and efficiency of thousand-grain weight detection for millet and foxtail millet, and is suitable for scientific research experiments and production quality inspection of millet and foxtail millet.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for crop testing, specifically relating to a weighing tray for determining the thousand-grain weight of millet and foxtail millet. Background Technology

[0002] Thousand-grain weight is a core agronomic indicator for evaluating the plumpness, variety quality, and yield potential of millet and foxtail millet grains. It is also a routine testing item in crop breeding experiments, cultivation research, and agricultural product quality testing.

[0003] Currently, the thousand-grain weight of millet and foxtail millet is generally measured manually by counting one thousand grains at a time before weighing. Due to the small size of millet and foxtail millet grains and the large sample size, manual counting is not only time-consuming and labor-intensive, but also inefficient, making it difficult to conduct large-scale sample testing. Furthermore, manual counting is prone to errors such as overcounting, undercounting, and omissions, resulting in significant human error and poor accuracy and repeatability of the test data. In addition, existing simple flat-laying testing tools lack standardized partitioning structures, leading to grain stacking, gaps, and uneven distribution, making standardized quantitative conversion impossible and further reducing the reliability of the experimental data.

[0004] In response to the shortcomings of existing testing tools, such as cumbersome operation, large testing errors, and low work efficiency, the market urgently needs a special weighing tray that is simple in structure, easy to operate, and accurate in measurement to meet the needs of rapid and accurate testing of millet and sorghum. Summary of the Invention

[0005] The purpose of this utility model is to provide a weighing tray for measuring the weight of 1,000 grains of millet and foxtail millet, which solves the problems of large errors and low efficiency in manual grain counting and weighing in the prior art, and the lack of standardized measuring structure in conventional flat-laying tools.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A weighing tray for determining the thousand-grain weight of millet and foxtail millet includes a supporting tray and a T-shaped compactor. The supporting tray has a square flat-bottom structure that can be adapted to the weighing platform of a conventional electronic balance. The inner bottom surface of the supporting tray is provided with a 10×10 uniformly distributed measuring grid, which is divided into 100 uniform square measuring cells. The side length of each measuring cell is 1 cm, and the grid lines are regular and the dimensions are standard.

[0007] The T-shaped compactor is a matching leveling component. Its external dimensions match the internal space of the support tray, and its bottom surface is a flat and smooth plane. After a single type of millet or foxtail millet grains are laid flat inside the support tray, the T-shaped compactor can be used to level and compact the grains, ensuring that all grains are evenly distributed in the metering grid. This guarantees that the grains are always in a single layer, effectively avoiding grain stacking, local gaps, grain protrusions, tilting, and other phenomena, thus ensuring the uniformity of grain distribution.

[0008] Furthermore, the T-shaped compactor is an integrated structure with a hand-held pressing handle at the top and a flat pressing plate at the bottom, ensuring uniform force distribution and stable leveling effect during the pressing process.

[0009] This invention employs a quadrat sampling method to calculate the weight of a thousand grains. The specific principle is as follows: The millet or foxtail millet grains to be tested are evenly spread in a support tray, and a T-shaped compactor is used to level and compact them, ensuring that all measuring cells are filled with a single layer of grains; five measuring cells are randomly selected as sampling samples, and the total number 'a' of grains in the five cells is counted according to a unified rule: grains inside the measuring cells, on the left side border, and on the top side border are counted, while grains on the right side border and bottom side border are not counted; the support tray is placed on a calibrated electronic balance, and the total weight 'b' of all grains in the tray is read.

[0010] Since there are a total of 100 measuring compartments in the tray, and the 5 sampling compartments account for one-twentieth of the total number, the formula for calculating the weight of a thousand grains can be derived from this: 1000-grain weight (g) = b ÷ (a × 20) × 1000 This invention relies on standardized grid partitioning, a dedicated compaction structure, and unified sampling and counting rules to replace the traditional manual full counting mode, significantly reducing errors caused by human operation and improving detection efficiency and data repeatability. Beneficial effects

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] High detection accuracy and good data stability: This utility model sets up a standardized 1 cm × 1 cm measuring grid, which, when used with a special T-type compactor, can flatten the grains into a single-layer structure. At the same time, with a unified border counting rule, it completely solves problems such as grain stacking, uneven distribution, and manual counting errors, and significantly improves the stability and repeatability of the detection data.

[0013] Simple to operate and highly efficient in testing: It adopts a statistical method of quadrat sampling conversion, eliminating the need for manual counting of thousands of grains one by one, simplifying the testing process, and significantly reducing the time required for a single test, making it suitable for centralized testing of large batches of samples.

[0014] Simple structure and strong versatility: The whole consists of only a support tray and a T-shaped compactor. The structure is simple and the manufacturing cost is low. It can be matched with a conventional electronic balance in the laboratory. The operation threshold is low and no professional training is required to use it.

[0015] Highly durable and widely applicable: The tray is made of wear-resistant and corrosion-resistant material, and the grid scale is not easily damaged, resulting in a long service life; the device is specifically designed for the measurement and detection of small, round grains such as millet and sorghum, and can be widely used in various scenarios such as millet breeding experiments, cultivation physiology research, agricultural product quality sampling, and agricultural teaching experiments. Attached Figure Description

[0016] Figure 1 This is a top view of the support tray of this utility model; Figure 2 This is a side view of the overall assembly of this utility model.

[0017] Figure labeling: A - support tray, BT type compactor. Detailed Implementation

[0018] This embodiment is only a preferred implementation of the present utility model and not all embodiments. All embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 , Figure 2 As shown, this utility model includes two supporting components: a support tray A and a T-shaped compactor B. The support tray has a square flat-bottom structure, with a 10×10 metering grid on its inner bottom surface, dividing it into 100 standard square metering cells with a side length of 1 cm. The T-shaped compactor is an integrated structure, consisting of a top handle and a bottom flat pressure plate, the shape of which matches the internal dimensions of the support tray.

[0020] The specific steps for using this device are as follows: Before each weighing, lay out a layer of millet or sorghum grains. Randomly select 5 small squares and count the number of millet or sorghum grains in each square (including the left and top borders of the selected squares). Let the number of millet or sorghum grains in the 5 small squares be 'a'. The weight displayed on the balance at this time is 'b'. Then you can directly get the weight of 1000 grains: Weight of 1000 grains = b ÷ (a × 20) × 1000.

Claims

1. A weighing tray for determining the thousand-grain weight of millet and foxtail millet, characterized in that, It includes a supporting pallet (A) and a T-type compactor (B) for use with it; the supporting pallet has a square structure, and the inner bottom surface of the supporting pallet is evenly divided into square metering grids arranged in a 10×10 array. The side length of each metering grid is 1 cm, and the total number of metering grids is 100.

2. The weighing tray for determining the thousand-grain weight of millet and foxtail millet according to claim 1, characterized in that, The external dimensions of the T-shaped compactor are adapted to the internal dimensions of the carrying tray. The T-shaped compactor is used to flatten and compact the millet or foxtail millet grains spread flat in the carrying tray, so that the grains are distributed in a single layer without stacking or gaps.

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