A sampling unit with variable reduction ratio and a sample divider

Abstract

The present invention relates to a sample dividing unit with a variable reduction ratio and a sample divider, comprising an upper sample dividing grid and a lower sample dividing grid which can rotate relatively, an upper sample outlet is provided on the upper sample dividing grid, an upper sample discarding outlet is evenly distributed at the bottom of the upper sample outlet, and an upper sample discarding channel is provided in the middle of the upper sample dividing grid; a lower sample discarding groove is provided on the lower sample dividing grid, a lower sample inlet is evenly distributed on the lower sample discarding groove, a lower sample discarding channel is provided at the bottom of the lower sample discarding groove, and a reduction ratio mark and an indication mark are respectively provided on the outer periphery of the upper sample dividing grid and the lower sample dividing grid. The present invention has a simple structure, and the reduction ratio can be continuously changed as needed, and it replaces a plurality of sample dividing units with fixed reduction ratios, and can quickly reduce a large number of samples under the premise of ensuring the representativeness of the samples, so as to achieve the required reduction ratio and the required number of sub-samples at one time, and the sample dividing efficiency is high, and the height of the equipment is greatly reduced, so that the sample dividing operation is simple and humanized.

Description

Technical Field

[0001] The invention belongs to the technical field of grain, oil and seed inspection, and relates to a sample dividing unit and a sample divider with a variable reduction ratio. Background Art

[0002] Food is a strategic material related to the national economy and people's livelihood. It is directly related to people's physical health and social stability. Therefore, its quality is very important.

[0003] Except for very rare cases, when the total quantity to be inspected is very large and the total quantity still has use value, only a small number of samples can be collected and the quality of the total quantity is determined by the test results of the samples.

[0004] In order to collect a small amount of samples that can accurately represent the overall quality from a large number of tested populations for analysis and testing, specially trained qualified personnel must formulate a thorough sampling plan according to the purpose of the inspection and follow certain rules, and use appropriate methods and tools to sample, mix, and divide samples to obtain samples for inspection. Once the samples are obtained, the quality of the samples determines the quality of the overall grain.

[0005] Correct sampling and reduction must be ensured to obtain samples that represent the overall quality, and the inspection results of the test samples can represent the overall situation.

[0006] For a long time, people tend to pay great attention to the inspection technology and process, but ignore sampling and sub-sampling. Sampling and sub-sampling errors make the sample lose its representativeness. For the analysis of samples that lose their representativeness, all subsequent work is meaningless.

[0007] Therefore, sampling and sample splitting are the first and most important steps in analytical testing. The sample splitter is the most important tool for sample splitting.

[0008] At present, the storage capacity of modern grain warehouses is very large. After sampling, the amount of samples collected is very large, and high reduction ratio is required for sample division. The existing sample dividers are all fixed when dividing, and can only divide by half at a time to obtain two sub-samples. And due to different needs, sometimes three sub-samples or more sub-samples are required. It often takes multiple repeated operations to obtain the required samples. The sample division operation is cumbersome and labor-intensive. Summary of the invention

[0009] The object of the present invention is to provide a sample dividing unit and a sample divider with a variable reduction ratio, which can solve the above-mentioned problems and are easy and quick to operate.

[0010] According to the technical solution provided by the present invention: a sample dividing unit with a variable reduction ratio includes an upper sample dividing grid and a lower sample dividing grid that can rotate relatively, an upper sample inlet and an upper sample discarding port are evenly distributed on the upper sample dividing grid 2, the upper sample inlet and the upper sample discarding port are arranged at intervals, and an upper sample discarding channel is opened in the middle of the upper sample dividing grid; a lower sample discarding groove is provided on the lower sample dividing grid, lower sample inlets are evenly distributed on the lower sample discarding groove, and a lower sample discarding channel is opened at the bottom of the lower sample discarding groove.

[0011] As a further improvement of the present invention, the outer peripheries of the upper sampling grid and the lower sampling grid are respectively provided with a reduction ratio mark and an indication mark.

[0012] A variable reduction ratio sampler comprises a frame, in which a uniform device, the variable reduction ratio sampling unit as described above, a uniform material distribution unit and a sample collection unit are arranged from top to bottom, an upper sample distribution grid is rotatably mounted in the frame, and a lower sample distribution grid is fixedly mounted in the frame; the uniform material distribution unit comprises left and right sample distribution grids and a sub-sample unit, and the left and right sample distribution grids and the sub-sample unit are fixedly mounted in the frame; and the sample collection unit is fixedly mounted in the frame.

[0013] As a further improvement of the present invention, left and right sample splitting inlets and left and right sample splitting discard ports are evenly distributed on the left and right sample splitting grids, and the left and right sample splitting inlets and the left and right sample splitting discard ports are arranged at intervals; left and right sample splitting discard channels are opened in the middle of the left and right sample splitting grids; a sub-sample unit sample splitting slot is provided on the sub-sample unit, a dispersed sample splitting slot is opened at the top of the sub-sample unit sample splitting slot, and a dispersed sample outlet is opened at the bottom of the sub-sample unit sample splitting slot; a sub-sample unit sample splitting discard channel is opened in the middle of the sub-sample unit; the middle of the sample collection unit is a sample splitting collection slot, the outer periphery of the sample splitting collection slot is a sample collection slot, and a sample outlet is opened at the bottom of the sample collection slot.

[0014] As a further improvement of the present invention, a partition is provided in the sample collecting tank.

[0015] As a further improvement of the present invention, the sub-sample unit injection slot and the sample collection slot are annular.

[0016] As a further improvement of the present invention, the uniform device is an inverted cone-shaped feed hopper.

[0017] As a further improvement of the present invention, the partition divides the sample collecting groove into a first sample collecting groove and a second sample collecting groove, and sample outlets are respectively opened at the bottom of the first sample collecting groove and the second sample collecting groove.

[0018] The positive effects of this application are:

[0019] The present invention has a simple structure, and the reduction ratio can be continuously changed as needed. It replaces a plurality of sample division units with fixed reduction ratios, and can quickly reduce a large number of samples while ensuring the representativeness of the samples, so as to achieve the required reduction ratio and the required number of sub-samples at one time. The sample division efficiency is high, the height of the equipment is greatly reduced, and the sample division operation is simple and user-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the upper sampling grid of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the sampling grid according to the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the left and right sampling grids of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the sub-sample unit of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the sample collection unit of the present invention.

[0026] Figure 1-Figure 6 The sample collecting unit 6, the sample discarding collecting slot 6-1, the partition plate 6-2, the first sample collecting slot 6-3, the second sample collecting slot 6-4, the sample collecting slot 6-4, the sample collecting slot 6-5, the sample collecting slot 6-6, the sample collecting slot 6-7, the sample collecting slot 6-8, the sample collecting slot 6-9, the sample collecting slot 6-1, the sample collecting slot 6-2, the sample collecting slot 6-1, the sample collecting slot 6-2, the sample collecting slot 6-3, the sample collecting slot 6-4, the sample collecting slot 6-4, the sample collecting slot 6-1, the sample collecting slot 6-2, the sample collecting slot 6-3, the sample collecting slot 6-4, the sample collecting slot 6-4, the sample collecting slot 6-1, the sample collecting slot 6-2, the sample collecting slot 6-3, the sample collecting slot 6-4, the sample collecting slot 6-4, the sample collecting slot 6-1, the sample collecting slot 6-2, the sample collecting slot 6-3, the second sample collecting slot 6-4, the sample collecting slot 6-4, the sample collecting slot 6-1, the sample collecting slot 6-2, the sample collecting slot 6-3, the sample collecting slot 6-4, the sample collecting slot 6-4, the sample collecting slot 6-2, the sample collecting slot 6-3, the sample collecting slot 6-4, the sample collecting slot 6-4, the sample collecting slot 6-1, the sample collecting slot 6-2, the sample collecting slot 6-3, the second sample collecting slot 6-4 ... DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed may also be "included" and "having"; for example, a process, method, system, product or device that may include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text expression.

[0031] like Figure 1 As shown, the present invention is a variable reduction ratio sampler, including a frame 1, in which a uniform device, a variable reduction ratio sampling unit, a uniform material dividing unit, and a sample collecting unit 6 are arranged from top to bottom. The variable reduction ratio sampling unit includes an upper sample dividing grid 2 and a lower sample dividing grid 3, the upper sample dividing grid 2 is rotatably installed in the frame 1, and the lower sample dividing grid 3 is fixedly installed in the frame 1; the uniform material dividing unit includes left and right sample dividing grids 4 and a sub-sample unit 5, and the left and right sample dividing grids 4 and the sub-sample unit 5 are fixedly installed in the frame 1; the sample collecting unit 6 is fixedly installed in the frame 1.

[0032] like Figure 2 As shown, the upper sample-dividing grid 2 is evenly distributed with upper sample inlets 2-1 and upper sample-discarding ports 2-2, the upper sample inlets 2-1 and the upper sample-discarding ports 2-2 are arranged at intervals, and an upper sample-discarding channel 2-3 is opened in the middle of the upper sample-dividing grid 2.

[0033] like Figure 3 As shown, a lower sample discarding groove 3-1 is provided on the lower sample dividing grid 3, lower sample inlets 3-2 are evenly distributed on the lower sample discarding groove 3-1, and a lower sample discarding channel 3-3 is opened at the bottom of the lower sample discarding groove 3-1.

[0034] In order to accurately control the reduction ratio by rotating the sampling grid to obtain samples with corresponding reduction ratios, reduction ratio marks 2-4 and indication marks 3-4 are respectively provided on the periphery of the upper sampling grid 2 and the lower sampling grid 3.

[0035] The uniform distribution unit achieves uniform distribution of samples by concentrating and then dispersing the samples. Figure 4As shown, left and right sample splitting inlets 4-1 and left and right sample splitting discarding ports 4-2 are evenly distributed on the left and right sample splitting grids 4, and the left and right sample splitting inlets 4-1 and the left and right sample splitting discarding ports 4-2 are arranged at intervals.

[0036] The number of the left and right sample splitting injection ports 4 - 1 needs to satisfy the maximum sample splitting volume of the sample splitter.

[0037] like Figure 5 As shown, the sub-sample unit 5 is provided with a sub-sample unit injection slot 5-1, a dispersed injection port is opened at the top of the sub-sample unit injection slot 5-1, and a dispersed outlet is opened at the bottom of the sub-sample unit injection slot 5-1. A sub-sample unit discard channel 5-2 is opened in the middle of the sub-sample unit 5.

[0038] like Figure 6 As shown, the middle of the sample collection unit 6 is a discarded sample collection groove 6-1, the periphery of the discarded sample collection groove 6-1 is a sample collection groove, and a sample outlet is opened at the bottom of the sample collection groove.

[0039] In order to collect multiple sub-samples after reduction, a partition 6-2 is provided in the sample collection tank.

[0040] In this embodiment, the sub-sample unit injection slot 5-1 and the sample collection slot are annular. Correspondingly, the uniform device is an inverted cone-shaped feed hopper, which disperses the sample entering the frame 1 into the upper injection port 2-1. The number of upper sample discard ports 2-2 and lower sample injection ports 3-2 is the same, both 5, and are correspondingly evenly distributed at the bottom of the upper injection port 2-1 and the top of the lower sample discard slot 3-1. The partition 6-2 divides the sample collection slot into a first sample collection slot 6-3 and a second sample collection slot 6-4, and sample outlets are respectively opened at the bottom of the first sample collection slot 6-3 and the second sample collection slot 6-4.

[0041] In other embodiments, the uniformity device is an inverted cone-shaped feed hopper with a uniformity grid.

[0042] The working process of the present invention is as follows:

[0043] The sample flows from the upper sample inlet 2-1 of the upper sample dividing grid 2 into the lower sample dividing grid 3. The sample flowing into the lower sample inlet 3-2 is sampled, and the sample flowing into the lower sample discarding slot 3-1 is discarded. By rotating the upper sample dividing grid 2, the reduction ratio mark 2-4 and the indication mark 3-4 can be used to adjust the sample reduction ratio.

[0044] The sample is then uniformly distributed in the uniform distribution unit and flows to the sample collection tank. The discarded sample flows through the lower discarded sample tank 3-1, the left and right sample distribution and discarded sample channels 4-3, and the sub-sample unit discarded sample channel 5-2 to the discarded sample collection tank 6-1.

[0045] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A variable reduction ratio sampler, comprising a frame (1), characterized in that: The frame (1) is provided with a uniform device, a variable reduction ratio sampling unit, a uniform material distribution unit, and a sample collection unit (6) from top to bottom. The variable reduction ratio sampling unit comprises an upper sample distribution grid (2) and a lower sample distribution grid (3) which can rotate relative to each other. An upper sample inlet (2-1) and an upper sample discarding port (2-2) are evenly distributed on the upper sample distribution grid (2). The upper sample inlet (2-1) and the upper sample discarding port (2-2) are arranged at intervals. An upper sample discarding channel (2-3) is opened in the middle of the upper sample distribution grid (2). A lower sample discarding groove (3-1) is provided on the lower sample distribution grid (3). The lower sample inlet (3-2) is evenly distributed, and the bottom of the lower sample discarding groove (3-1) is provided with a lower sample discarding channel (3-3); the upper sample dividing grid (2) is rotatably mounted in the frame (1), and the lower sample dividing grid (3) is fixedly mounted in the frame (1); the evenly distributed material distribution unit comprises left and right sample dividing grids (4) and a sub-sample unit (5), and the left and right sample dividing grids (4) and the sub-sample unit (5) are fixedly mounted in the frame (1); the sample collecting unit (6) is fixedly mounted in the frame (1); the outer peripheries of the upper sample dividing grid (2) and the lower sample dividing grid (3) are respectively provided with a reduction ratio mark (2-4) and an indicator The left and right sample dividing grids (4) are evenly distributed with left and right sample dividing inlets (4-1) and left and right sample dividing discarding outlets (4-2), and the left and right sample dividing inlets (4-1) and the left and right sample dividing discarding outlets (4-2) are arranged at intervals; a left and right sample dividing grid (4) is provided with a left and right sample dividing discarding channel (4-3) in the middle; a sub-sample unit sample dividing grid (5) is provided with a sub-sample unit sample dividing slot (5-1), a sub-sample unit sample dividing slot (5-1) is provided with a sub-sample unit sample dividing slot (5-1) at the top, and a sub-sample unit sample dividing slot (5-1) is provided with a sub-sample outlet at the bottom; the left and right sample dividing grids (5) are provided with a sub-sample unit sample dividing slot (5-1) at the top, and a sub-sample unit sample dividing slot (5-1) is provided with a sub-sample outlet at the bottom; A sub-sample unit sample discarding channel (5-2) is opened in the middle of the sample collection unit (6); a sample discarding collection groove (6-1) is formed in the periphery of the sample discarding collection groove (6-1); a sample outlet is opened at the bottom of the sample collection groove; a partition (6-2) is provided in the sample collection groove; the sub-sample unit sample injection groove (5-1) and the sample collection groove are annular; the partition (6-2) divides the sample collection groove into a first sample collection groove (6-3) and a second sample collection groove (6-4); sample outlets are opened at the bottom of the first sample collection groove (6-3) and the second sample collection groove (6-4), respectively.

2. The variable reduction ratio sampler according to claim 1, characterized in that: The uniform device is an inverted cone-shaped feed hopper.

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