Raw grain quality automatic detection equipment

Abstract

The invention belongs to the technical field of unprocessed grain quality detection, and particularly discloses unprocessed grain quality automatic detection equipment, which comprises a rough sample separator, a screening machine, a packaging machine, a feeding mechanism, a feeding mechanism, a feeding mechanism and a discharging mechanism, and is characterized in that the rough sample separator conveys net samples and packaged samples to the screening machine and the packaging machine respectively; the screening machine is used for conveying the net samples and the impurities to the net sample separating machine through a material conveying mechanism; the net sample separating machine is used for metering the volume of the net sample, respectively conveying the net sample subjected to volume metering to the moisture volume-weight instrument and the imperfect grain bin, and conveying impurities to the impurity receiving disc; the packaging machine is used for packaging the packaging sample; the imperfect grain bin is connected with the imperfect grain detection equipment through a material conveying mechanism. According to the invention, samples obtained by sampling can be automatically separated, screened, packaged and reserved, pneumatically conveyed and discharged, and indexes such as the water volume weight, the appearance smell, the impurity ratio and the toxin content of unprocessed grains are detected, so that the quality rating of the unprocessed grains is realized, the price of the purchased unprocessed grains is determined, and the graded warehousing of the unprocessed grains is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of raw grain quality detection equipment, and in particular relates to an automatic raw grain quality detection equipment. Background Art

[0002] In the process of raw grain collection and storage, it is necessary to price and grade the raw grain according to its quality. The current situation is that the raw grain is sampled, divided, screened and tested according to the national grain testing standards, and all processes are done manually. However, there are problems such as low testing efficiency, high dust in the working environment, high work intensity, and large deviation in test data.

[0003] Therefore, how to design a device for testing grain quality, through automatic sampling, screening, packaging, pneumatic conveying, and residual discharge of samples taken by sampling, as well as testing indicators such as moisture density, appearance and odor, impurity ratio, and toxin content of the raw grain, to achieve raw grain quality rating, determine the purchase price of raw grain, and realize graded storage of raw grain, has become a key research topic in existing technologies. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an automatic detection device for raw grain quality to solve the above-mentioned problems.

[0005] To achieve the above object, the present invention discloses an automatic detection device for raw grain quality, comprising:

[0006] A rough sample sorting machine is used to screen the material to obtain a net sample and a packaged sample. The rough sample sorting machine conveys the net sample and the packaged sample to the screening machine and the packaging machine respectively through a feeding mechanism;

[0007] A screening machine is used to screen and weigh the clean sample and obtain the weight of the clean sample and impurities. The screening machine conveys the clean sample and impurities to the clean sample separator through a feeding mechanism;

[0008] The clean sample divider is used to determine the volume of the clean sample, and transport the clean sample after determination to the moisture density meter and the imperfect grain bin, and transport the impurities to the impurity receiving tray;

[0009] A packing machine is used to pack the packing samples;

[0010] And an imperfect grain detection device, wherein the imperfect grain bin is connected to the imperfect grain detection device via a feeding mechanism.

[0011] Compared with the prior art, the present application has the following effects: when in use, first, the raw grain is transported to the gross sample sorting machine through the external sampling device, and the gross sample sorting machine automatically sorts the raw grain to obtain the net sample and the packaged sample; then the feeding mechanism transports the net sample and the packaged sample to the screening machine and the packaging machine respectively, wherein the screening machine is used to screen and weigh the net sample, and obtain the weight of the net sample and impurities, and automatically calculate the proportion of impurities, and the packaging machine is used to pack and retain samples of the packaged sample; then, the feeding mechanism transports the net sample and impurities that meet the required weight to the net sample sorting machine, and the net sample sorting machine To determine the volume of the clean sample is to divide the clean grain into samples and reduce them until the required detection weight is achieved; the clean sample after volume determination is respectively transported to the moisture density meter and the imperfect grain bin. The moisture density meter is used for moisture density detection of the clean sample. At the same time, the impurities in the clean sample divider are transported to the impurity receiving tray, and the impurities in the impurity receiving tray are manually observed to complete the appearance and smell detection of the sample; finally, the clean grain in the imperfect grain bin is transported to the imperfect grain detection equipment through the feeding mechanism, and the imperfect grain detection equipment automatically sorts and identifies the imperfect grains in the sample and automatically issues data.

[0012] To sum up, the present application can automatically sort, screen, package, pneumatically convey, and discharge the residue of the samples taken by sampling, as well as detect the moisture density, appearance and odor, impurity ratio, toxin content and other indicators of the raw grain, so as to realize the quality rating of the raw grain, determine the purchase price of the raw grain, and realize the graded storage of the raw grain.

[0013] Furthermore, the hair sample sorting machine comprises:

[0014] A material storage shakron, the bottom of which is connected to a grid sample divider via a pipeline;

[0015] A grid sample divider is used to achieve equal division of materials. A plurality of grid sample dividers are provided as required, one side of the outlet of the plurality of grid sample dividers is connected to the inlet of the adjacent grid sample divider below, and the other side of the outlet is connected to the residual material recovery channel; wherein one side of the outlet of the lowest grid sample divider is connected to the temporary storage hopper for sieved samples, and the other side of the outlet is connected to the temporary storage hopper for packaged materials;

[0016] Screened sample temporary storage bucket, used for temporary storage of clean samples;

[0017] A temporary storage hopper for packaging materials, used for temporary storage of packaging samples, the temporary storage hopper for packaging materials is connected to the packaging machine through a feeding mechanism;

[0018] And a screening sample buffer bin is used to realize material buffering, and the screening sample buffer bin is arranged between the grid sample divider and the screening sample temporary storage bucket.

[0019] Furthermore, a sampler weighing hopper for weighing materials is provided at the bottom of the material storage shaker, and a three-way valve is provided at the bottom of the sampler weighing hopper. A paddle mechanism is provided in the three-way valve, and the paddle mechanism is used to guide the material in the three-way valve to flow through the first channel or the second channel. The first channel and the second channel are respectively connected to the grid sampler.

[0020] Furthermore, the screening machine comprises:

[0021] A screening module, the screening module comprising a rotary vibrating screen, a clean sample guide pipe and an impurity guide pipe, the screened sample temporary storage bucket conveys the clean sample to the rotary vibrating screen through a feeding mechanism, and the rotary vibrating screen conveys the screened clean sample and impurities to a weighing module through the clean sample guide pipe and the impurity guide pipe respectively;

[0022] Weighing module, used to weigh the impurities and the clean sample respectively;

[0023] And a clean sample dust removal module, the clean sample dust removal module is connected to the clean sample guide pipe and is used for dust removal of the clean sample.

[0024] Furthermore, the clean sample dust removal module includes a dust collector, a dust removal pipe and a baffle, the dust collector is connected to the clean sample guide pipe through the dust removal pipe, the baffle is arranged in the clean sample guide pipe, and the baffle is arranged on the side of the air inlet of the dust removal pipe close to the clean sample, and is used to separate the clean sample from the air inlet.

[0025] Furthermore, the vibrating screen includes an upper screen and a lower screen, a lower screen is provided at the bottom of the upper screen, the mesh of the upper screen is larger than that of the lower screen, the upper screen is used to screen out large particles of impurities, and the large particles of impurities are discharged through the upper discharge port, and the lower screen is used to screen out small particles of impurities, and the raw grain on the lower screen is discharged through the lower discharge port; it also includes an opening and closing mechanism for controlling whether the material on the upper screen enters the upper discharge port, and the opening and closing mechanism is arranged on the upper screen.

[0026] Furthermore, a bulk conical plate for evenly dispersing clean grain onto the upper screen is provided just below the feeding port of the upper screen, and a vibrating air hammer for preventing clean grain from adhering to the screen is provided below the bulk conical plate.

[0027] Furthermore, the net sample sorting machine includes an impurity suction hopper, a clean sample suction hopper and a faulty material suction hopper, the impurity suction hopper, the clean sample suction hopper and the faulty material suction hopper are respectively connected to the weighing module through the feeding mechanism, the impurity suction hopper is connected to the impurity receiving plate through an impurity pipeline, the clean sample suction hopper is connected to the net sample sorting constant volume bin through the clean sample pipeline, the net sample sorting constant volume bin includes a clean sample constant volume bin and an imperfect particle constant volume bin, the clean sample constant volume bin and the imperfect particle constant volume bin are respectively connected to the moisture bulk density meter and the imperfect particle bin through a moisture bulk density pipeline and an imperfect particle pipeline, and the net sample sorting constant volume bin is also connected to the faulty material pipeline connected to the faulty material suction hopper.

[0028] Furthermore, it also includes a soybean meal suction hopper, which is connected to the screening sample temporary storage hopper through a feeding mechanism, and the soybean meal suction hopper is connected to the soybean meal temporary storage barrel through a soybean meal pipeline.

[0029] Furthermore, it also includes a feeding locking mechanism arranged on the clean sample and sampling constant volume bin, and the feeding locking mechanism is used to control the separation of the water density pipeline and the clean sample constant volume bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative work.

[0031] Figure 1 This is a schematic structural diagram of an automatic raw grain quality detection device according to an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of one side of a hair sample sorting machine according to an embodiment of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the other side of the hair sample sorting machine according to an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the structure of a screening machine on one side of an embodiment of the present invention;

[0035] Figure 5 It is a schematic structural diagram of the other side of the screening machine according to an embodiment of the present invention;

[0036] Figure 6 for Figure 5 A partial enlarged schematic diagram of the net sample weighing hopper and the impurity weighing hopper;

[0037] Figure 7A schematic diagram of the structure of a rotary vibrating screen according to an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of the internal structure of the upper screen of the rotary vibrating screen according to an embodiment of the present invention;

[0039] Fig. 9 It is a schematic diagram of the structure of the rotary vibrating screen behind the hidden upper screen in an embodiment of the present invention;

[0040] Fig.10 It is a structural schematic diagram of a clean sample sorting machine according to an embodiment of the present invention.

[0041] The reference numerals are as follows:

[0042] 1. Raw sample sorting machine; 1-1. Material storage shakron; 1-2. Grid sampler; 1-3. Screened sample temporary storage hopper; 1-4. Packed material temporary storage hopper; 1-5. Screened sample buffer; 1-6. Residual material recovery channel; 1-7. Overflow pipe; 1-8. Sampler weighing hopper; 1-9. Three-way valve; 1-10. Plate mechanism; 1-11. First channel; 1-12. Second channel; 1-13. Door opening mechanism; 1-14. Three-way air inlet; 1-15. Air inlet end; 2. Material feeding mechanism; 2-1. Suction machine 1; 2-2. Suction machine 2; 3. , screening machine; 3-1, rotary vibrating screen; 3-2, clean sample guide pipe; 3-3, impurity guide pipe; 3-4, dust collector; 3-5, dust removal pipe; 3-6, baffle; 3-7, clean sample weighing hopper; 3-8, impurity weighing hopper; 3-9, clean sample temporary storage hopper; 3-10, impurity temporary storage hopper; 3-11, clean sample door opening cylinder; 3-12, clean sample rotating plate; 3-13, clean sample fixed plate; 3-14, impurity door opening cylinder; 3-15, impurity rotating hopper; 3-16, impurity fixed plate; 3-17, roller; 3-18, upper screen; 3- 19. Lower screen; 3-20. Upper discharge port; 3-21. Lower discharge port; 3-22. Feeding port; 3-23. Bulk material cone plate; 3-24. Vibrating air hammer; 3-25. Guide plate; 3-26. Guide strip; 3-27. Frame; 3-28. Cylinder; 3-29. Floating joint; 3-30. Pull ear; 3-31. Temporary storage bin; 3-32. Vibrating motor; 3-33. Buckle; 3-34. Bottom discharge port; 4. Clean sample sorting machine; 4-1. Impurity suction hopper; 4-2. Clean sample suction hopper; 4-3. Fault material suction Bucket; 4-4, impurity pipeline; 4-5, impurity receiving tray; 4-6, clean sample pipeline; 4-7, clean sample separation and volume storage bin; 4-8, clean sample volume storage bin; 4-9, imperfect grain volume storage bin; 4-10, moisture density pipeline; 4-11, imperfect grain pipeline; 4-12, moisture density meter; 4-13, faulty material pipeline; 4-14, soybean meal suction hopper; 4-15, soybean meal pipeline; 4-16, soybean meal temporary storage barrel; 4-17, feeding locking mechanism; 5, baler; 6, imperfect grain detection equipment; 7, corn suction hopper; 8, wheat suction hopper. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments 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 creative work are within the scope of protection of the present invention.

[0044] like Figure 1 As shown, the present invention discloses an automatic detection device for raw grain quality, comprising:

[0045] The raw sample sorting machine 1 is used to screen the material to obtain a net sample and a packaged sample. The raw sample sorting machine 1 conveys the net sample and the packaged sample to the screening machine 3 and the packaging machine 5 respectively through the feeding mechanism 2, wherein the feeding mechanism 2 includes a suction machine 1 2-1 and a suction machine 2-2;

[0046] The screening machine 3 is used to screen and weigh the clean sample and obtain the weight of the clean sample and impurities. The screening machine 3 conveys the clean sample and impurities to the clean sample separator 4 through the feeding mechanism 2;

[0047] The clean sample divider 4 is used to determine the volume of the clean sample, and transport the determined clean sample to the moisture density meter 4-12 and the imperfect grain bin, and transport the impurities to the impurity receiving tray 4-5;

[0048] A packing machine 5, used for packing the packing samples;

[0049] And an imperfect grain detection device 6, and the imperfect grain bin is connected to the imperfect grain detection device 6 through the feeding mechanism 2.

[0050] Compared with the prior art, the present application has the following effects: when in use, first, the raw grain is transported to the rough sample sorting machine 1 through the external sampling equipment, and the rough sample sorting machine 1 automatically sorts the raw grain to obtain a net sample and a packaged sample; then the feeding mechanism 2 transports the net sample and the packaged sample to the screening machine 3 and the packaging machine 5 respectively, wherein the screening machine 3 is used to screen and weigh the net sample, and obtain the weight of the net sample and impurities, and automatically calculate the proportion of impurities, and the packaging machine 5 is used to package and retain samples of the packaged sample, that is, to automatically package and code the retained samples; then, the feeding mechanism 2 transports the net sample and impurities that meet the required weight to the net sample sorting machine 4, and the net sample and impurities that meet the required weight are transported ... The sample divider 4 determines the volume of the net sample, that is, divides and reduces the net grain to achieve the required detection weight; the net sample after volume determination is respectively transported to the moisture density meter 4-12 and the imperfect grain bin, the moisture density meter 4-12 is used for moisture density detection of the net sample, at the same time, the impurities in the net sample divider 4 are transported to the impurity receiving tray 4-5, the impurities in the impurity receiving tray 4-5 are manually observed, and the appearance and smell detection of the sample is completed; finally, the clean grain in the imperfect grain bin is transported to the imperfect grain detection device 6 through the feeding mechanism 2, and the imperfect grain detection device 6 automatically sorts and identifies the imperfect grains in the sample and automatically issues data.

[0051] In summary, this application involves the ability to automatically sort, screen, package, pneumatically convey, and discharge the residue of samples taken by sampling, as well as test indicators such as moisture density, appearance and odor, impurity ratio, and toxin content of the raw grains, so as to achieve raw grain quality rating, determine the purchase price of raw grains, and realize graded storage of raw grains.

[0052] Following the above embodiment, more specifically, Figure 2 , Figure 3As shown, the wool sample sorting machine 1 comprises:

[0053] A material storage shaker 1-1, the bottom of which is connected to a grid sampler 1-2 via a pipeline;

[0054] The grid sample divider 1-2 is used to achieve equal distribution of materials. Multiple grid sample dividers 1-2 are provided as required. One side of the outlet of multiple grid sample dividers 1-2 is connected to the inlet of the adjacent grid sample divider 1-2 below, and the other side of the outlet is connected to the residual material recovery channel 1-6; wherein one side of the outlet of the lowest grid sample divider 1-2 is connected to the screening sample temporary storage bucket 1-3, and the other side of the outlet is connected to the packaging material temporary storage bucket 1-4;

[0055] Screening sample temporary storage bucket 1-3, used for temporary storage of screening sample materials;

[0056] Packing material temporary storage bucket 1-4, used for temporary storage of packing materials;

[0057] And the screening sample buffer bin 1-5 is used to realize material buffering, and the screening sample buffer bin 1-5 is arranged between the grid sample divider 1-2 and the screening sample temporary storage bucket 1-3.

[0058] The working process of the rough sample sorting machine 1 is:

[0059] When in use, the material is first conveyed into the material storage shaker 1-1. When the material meets the standard, the material storage shaker 1-1 is opened, and the material flows into the grid sampler 1-2; the grid sampler 1-2 is used to divide the material into two parts, one part of the material flows into the grid sampler 1-2 below, and the other part of the material flows into the residual material recovery channel 1-6; according to the above-mentioned distribution principle, the material is divided downward until the required sampling weight is obtained, and the material weight that meets the requirements is respectively stored in the screening sample temporary storage bucket 1-3 and the packaging material temporary storage bucket 1-4. It should be noted that a screening sample buffer bin 1-5 is added between the grid sample divider 1-2 and the screening sample temporary storage bucket 1-3. Through the screening sample buffer bin 1-5, the material can be temporarily stored during the equal distribution process, so that the material can be evenly distributed after temporary storage. During the temporary storage of the material, the material and impurities can have a mixing process, so that the impurities and the material are fully mixed, and then the material is evenly distributed. This can effectively solve the problem that after the material is sampled, some materials have more impurities or some materials have less impurities, and thus avoid the impurity content of the material exceeding the standard, which makes the material taken for sampling not representative, thereby ensuring that the quality analysis results of the raw grain are more accurate.

[0060] Continuing with the above embodiment, more specifically, the top of the temporary storage bucket 1-4 of the packaged material is connected to the residual material recovery channel 1-6 through the overflow pipe 1-7. Through the design of the temporary storage bucket 1-4 of the packaged material, in fact, the temporary storage bucket 1-4 of the packaged material is designed with a constant volume, so that a fixed amount of material can be placed in the temporary storage bucket 1-4 of the packaged material, and the excess material can be discharged through the overflow pipe 1-7, so that the weight of the material temporarily stored in the temporary storage bucket 1-4 of the packaged material can be controlled.

[0061] Continuing with the above embodiment, more specifically, a sampler weighing hopper 1-8 for weighing the weight of the material is provided at the bottom of the material storage slurry 1-1. The design of the sampler weighing hopper 1-8 can monitor the weight of the material in the material storage slurry 1-1 in real time, providing a reference for subsequent work.

[0062] Continuing with the above embodiment, more specifically, a three-way valve 1-9 is provided at the bottom of the sample divider weighing hopper 1-8, and a paddle mechanism 1-10 is provided in the three-way valve 1-9. The paddle mechanism 1-10 is used to guide the material in the three-way valve 1-9 to flow through the first channel 1-11 or the second channel 1-12. The first channel 1-11 and the second channel 1-12 are respectively connected to the grid sample divider 2.

[0063] Specifically, the paddle mechanism 1-10 includes a rotating cylinder and a paddle connected to the rotating cylinder, so that when the rotating cylinder is working, the paddle is driven to rotate in the three-way valve 1-9. When the paddle is rotated close to the first channel 1-11, the material is prevented from entering the first channel 1-11, so that the material is transported downward from the second channel 1-12. Conversely, the material is transported downward from the first channel 1-11.

[0064] Continuing with the above embodiment, more specifically, one side of the outlet of the grid sample divider 1-2 connected to the second channel 1-12 is connected to the inlet of the grid sample divider 1-2 connected to the first channel 1-11, and the other side of the outlet is connected to the residual material recovery channel 1-6. Part of the material equally divided by the grid sample divider 1-2 in the second channel 1-12 flows into the grid sample divider 1-2 of the first channel 1-11, and part of it flows into the residual material recovery channel 1-6. That is to say, when there is a lot of material, it can be first diverted through the second channel 1-12 and then enter the first channel 1-11. Otherwise, the material can be directly transported in the first channel 1-11.

[0065] Continuing with the above embodiment, more specifically, the screening sample buffer bin 1-5 and the material storage hopper 1-1 are both provided with a door opening mechanism 1-13, which is used to open and close the door to store materials. The door opening mechanism 1-13 may be a pneumatic butterfly valve or the like.

[0066] Continuing with the above embodiment, more specifically, a three-way air inlet 1-14 is provided below the screening sample temporary storage bucket 1-3 and the packaging material temporary storage bucket 1-4.

[0067] Continuing with the above embodiment, it is more preferred that the air inlet end 1-15 of the three-way air inlet 1-14 faces upward. By setting the air inlet end 1-15 facing upward, it is prevented that materials enter the air inlet end 1-15 and cause the air inlet end 1-15 to be blocked.

[0068] Continuing with the above embodiment, more specifically, there are five grid sample dividers 1-2, wherein four grid sample dividers 1-2 are arranged on the first channel 1-11, and one grid sample divider 1-2 is arranged on the second channel 1-12, and a screening sample buffer bin 1-5 is arranged between the second grid sample divider 1-2 and the third grid sample divider 1-2 which are distributed from top to bottom along the first channel 1-11. Placing the screening sample buffer bin 1-5 in the middle of the first channel 1-11 is more conducive to the uniform distribution of impurities and materials, so that the screened materials meet the requirements.

[0069] Following the above embodiment, more specifically, Figure 4 , Figure 5 , Figure 6 As shown, the screening machine 3 comprises:

[0070] The screening module includes a rotary vibrating screen 3-1, a clean sample guide pipe 3-2 and an impurity guide pipe 3-3. The rotary vibrating screen 3-1 transports the clean sample and impurities after screening to the weighing module through the clean sample guide pipe 3-2 and the impurity guide pipe 3-3 respectively;

[0071] Weighing module, used to weigh the impurities and the clean sample respectively;

[0072] And a clean sample dust removal module, which is connected to the clean sample guide pipe 1 and is used for dust removal of the clean sample.

[0073] The working process of screening machine 3 is:

[0074] When in use, the rotary vibrating screen 3-1 is turned on, and the clean sample and impurities screened out flow into the weighing module through the clean sample guide pipe 3-2 and the impurity guide pipe 3-3 respectively, and the clean grain and impurities are weighed on the weighing module. Among them, the clean sample dust removal module is connected to the clean sample guide pipe 1, and the clean sample dust removal module works to absorb dust and light debris such as wheat husks in the clean sample, thereby avoiding problems that affect the clean sample detection results.

[0075] Continuing with the above embodiment, more specifically, the clean sample dust removal module includes a dust collector 3-4, a dust removal pipe 3-5 and a baffle 3-6. The dust collector 3-4 is connected to the clean sample guide pipe 3-2 through the dust removal pipe 3-5. The baffle 3-6 is arranged in the clean sample guide pipe 3-2, and the baffle 3-6 is arranged on the side of the air inlet of the dust removal pipe 3-5 close to the clean sample, which is used to separate the clean sample from the air inlet. Among them, the dust collector 3-4 can be a Shaklon dust collector. Through the design of the baffle 3-6, the clean grain can be effectively blocked from entering the air inlet, that is, the dust collector 3-4 is prevented from sucking the clean grain away.

[0076] Continuing with the above embodiment, more specifically, the baffle 3 - 6 is an L-shaped baffle, thereby preventing clean food from entering the air inlet through the bottom of the baffle 3 - 6.

[0077] Continuing with the above embodiment, more specifically, a transparent acrylic plate is provided on the outside of the clean sample guide tube 3 - 2 , and the dust and impurity removal of the clean sample inside the clean sample guide tube 3 - 2 can be observed through the acrylic plate.

[0078] Continuing with the above embodiment, more specifically, the weighing module includes a clean sample weighing hopper 3-7 and an impurity weighing hopper 3-8 respectively arranged below the clean sample flow guide tube 3-2 and the impurity flow guide tube 3-3. The clean sample weighing hopper 3-7 and the impurity weighing hopper 3-8 are not in contact with the clean sample flow guide tube 3-2 and the impurity flow guide tube 3-3, so as to prevent the vibration force from being transmitted to the clean sample weighing hopper 3-7 and the impurity weighing hopper 3-8 through the clean sample flow guide tube 3-2 and the impurity flow guide tube 3-3 when the rotary vibrating screen 3-1 vibrates, thereby affecting the accuracy of the clean sample and impurity weighing.

[0079] It should be noted that both the clean sample guide tube 3-2 and the impurity guide tube 3-3 have a section of soft connection structure made of non-woven fabric, which not only facilitates the connection between components, but also prevents the clean sample guide tube 3-2 and the impurity guide tube 3-3 from swinging back and forth at the outlet due to the vibration of the rotary vibrating screen 3-1, thereby preventing the clean sample guide tube 3-2 and the impurity guide tube 3-3 from touching the clean sample weighing hopper 3-7 and the impurity weighing hopper 3-8.

[0080] Continuing with the above embodiment, more specifically, a net sample temporary storage hopper 3-9 and an impurity temporary storage hopper 3-10 are respectively arranged below the net sample weighing hopper 3-7 and the impurity weighing hopper 3-8. The net sample and impurities weighed by the net sample weighing hopper 3-7 and the impurity weighing hopper 3-8 can be temporarily stored in the net sample temporary storage hopper 3-9 and the impurity temporary storage hopper 3-10 for the convenience of the operation of the next process.

[0081] Continuing with the above embodiment, more specifically, the clean sample weighing hopper 3-7 includes a clean sample hopper, a clean sample weighing sensor and a clean sample door opening mechanism, and the impurity weighing hopper 3-8 includes an impurity hopper, an impurity weighing sensor and an impurity door opening mechanism. Among them, the clean sample weighing sensor is used to weigh the clean sample in the clean sample hopper, and the impurity weighing sensor is used to weigh the impurities in the impurity hopper. After weighing, the clean sample door opening mechanism and the impurity door opening mechanism are opened, so that the clean sample and impurities fall into the clean sample temporary storage hopper 3-9 and the impurity temporary storage hopper 3-10 for temporary storage.

[0082] Continuing with the above embodiment, more specifically, the clean sample door opening mechanism includes a clean sample door opening cylinder 3-11, and the clean sample bucket includes a clean sample rotating plate 3-12 and a clean sample fixed plate 3-13 that are hinged to each other, so that when the clean sample door opening cylinder 3-11 is extended, it can push the clean sample rotating plate 3-12 to rotate around the clean sample fixed plate 3-13. Among them, when the clean sample door opening cylinder 3-11 is extended, it will push the clean sample rotating plate 3-12 to rotate upward around the clean sample fixed plate 3-13, thereby generating a gap between the clean sample rotating plate 3-12 and the clean sample fixed plate 3-13, thereby completing the opening of the clean sample door opening mechanism, and the clean sample falls into the clean sample temporary storage bucket 3-9 through the gap; when the clean sample door opening cylinder 3-11 is contracted, the clean sample rotating plate 3-12 is reset under the action of its own gravity, thereby completing the closing of the clean sample door opening mechanism.

[0083] Continuing with the above embodiment, more specifically, the impurity door opening mechanism includes an impurity door opening cylinder 3-14 and a tension spring, and the impurity bucket includes an impurity rotating plate 3-15 and an impurity fixed plate 3-16 that are hinged to each other, and the impurity rotating plate 3-15 is connected to the tension spring, so that when the impurity door opening cylinder 3-14 is extended, it can push the impurity rotating plate 3-15 to rotate around the impurity fixed plate 3-16 and stretch the tension spring. Among them, when the impurity door opening cylinder 3-14 is extended, it will push the impurity rotating plate 3-15 to rotate downward around the impurity fixed plate 3-16, thereby generating a gap between the impurity rotating plate 3-15 and the impurity fixed plate 3-16, thereby completing the opening of the impurity door opening mechanism, and the impurities fall into the impurity temporary storage bucket 3-10 through the gap. At the same time, the tension spring is stretched due to the rotation of the impurity rotating plate 3-15; when the impurity door opening cylinder 3-14 is contracted, the impurity rotating plate 3-15 is reset under the tension of the tension spring, thereby completing the closing of the impurity door opening mechanism.

[0084] Continuing with the above embodiment, more specifically, the telescopic end of the impurity door opening cylinder 3-14 is provided with a roller 3-17. Through the design of the roller 3-17, the impurity door opening cylinder 3-14 forms a sliding contact when in contact with the impurity rotating plate 3-15, further protecting the impurity rotating plate 3-15.

[0085] Following the above embodiment, more specifically, Figure 7 , Figure 8 , Fig. 9As shown, the vibrating screen 3-1 includes an upper screen 3-18 and a lower screen 3-19, and the lower screen 3-19 is provided at the bottom of the upper screen 3-18. The mesh of the upper screen 3-18 is larger than that of the lower screen 3-19. The upper screen 3-18 is used to screen out large particles of impurities, which are discharged through the upper discharge port 3-20, and the lower screen 3-19 is used to screen out small particles of impurities, and the raw grains on the lower screen 3-19 are discharged through the lower discharge port 3-21; it also includes an opening and closing mechanism for controlling whether the material on the upper screen 3-18 enters the upper discharge port 3-20, and the opening and closing mechanism is provided on the upper screen 3-18.

[0086] The working process of the rotary vibrating screen 3-1 is:

[0087] When in use, after the raw grain enters the upper screen 3-18, the opening and closing mechanism in the upper screen 3-18 is closed to prevent impurities and raw grain from entering the upper discharge port 3-20, thus solving the problem of waste of raw grain due to entering the upper discharge port 3-20; when the upper screen 3-18 is finished screening, it starts to discharge impurities (large particle impurities), at this time, the opening and closing mechanism is opened, and the impurities enter the upper discharge port 3-20 for discharge; and the raw grain entering the lower screen 3-19 continues to be screened, and small particle impurities fall under the lower screen 3-19, and the raw grain is discharged through the lower discharge port 3-21, and the small particle impurities are discharged through the bottom discharge port 3-34, wherein the upper discharge port 3-20 and the bottom discharge port 3-34 can be designed to be connected, and the impurities are discharged to the designated position through the impurity discharge pipe.

[0088] Continuing with the above embodiment, it is more preferred that a bulking conical plate 3-23 for evenly dispersing the raw grains onto the upper screen 3-18 is provided directly below the feeding port 3-22 of the upper screen 3-18. The bulking conical plate 3-23 can not only slow down the speed of the raw grains to reduce the impact of the raw grains on the upper screen 3-18, but also evenly disperse the raw grains around the upper screen 3-18, thereby improving the screening efficiency.

[0089] Continuing with the above embodiment, it is more preferred that a vibrating air hammer 3-24 is provided below the bulk material cone plate 3-23 to prevent the material from adhering to the screen. When the vibrating air hammer 3-24 is working, it generates vibration to shake off the impurities adsorbed on the screen to prevent the screen from being blocked.

[0090] Continuing with the above embodiment, it is more preferred that a bulk material cone plate 3-23 is provided on the lower screen 3-19, and a vibrating air hammer 3-24 is provided below the bulk material cone plate 3-23. The structure and function of this design are the same as above and will not be repeated herein.

[0091] Continuing with the above embodiment, more specifically, the opening and closing mechanism includes a guide plate 3-25 and a guide strip 3-26 that are relatively arranged. One end of the guide plate 3-25 is hinged to the frame 3-27, and the other end is connected to the telescopic member. Both ends of the guide strip 3-26 are connected to the frame 3-27, so that when the telescopic member pushes the guide plate 3-25 to rotate, the guide plate 3-25 approaches or moves away from the guide strip 3-26.

[0092] Continuing with the above embodiment, more specifically, the telescopic member includes a cylinder 3-28, a floating joint 3-29 and a pull ear 3-30. The cylinder 3-28 is arranged on the guide bar 3-26. The cylinder 3-28 is connected to the guide plate 3-25 through the floating joint 3-29 and the pull ear 3-30, so that when the cylinder 3-28 is extended, the guide plate 3-25 is driven to rotate away from the guide bar 3-26, so that impurities can enter the upper discharge port 3-20 through the gap between the guide plate 3-25 and the guide bar 3-26. Conversely, after the cylinder 3-28 is reset, the guide plate 3-25 and the guide bar 3-26 are fitted together to prevent impurities and raw grains from entering the upper discharge port 3-20.

[0093] Continuing with the above embodiment, more specifically, it further includes a temporary storage bin 3-31 for containing small particle impurities sieved out by the lower screen 3-19. The temporary storage bin 3-31 is designed to collect small particle impurities and discharge them through the bottom discharge port 3-34.

[0094] Continuing with the above embodiment, it is more preferred that the bottom surfaces of the upper screen 3-18, the lower screen 3-19 and the temporary storage bin 3-31 are all inclined toward the discharge port. This design facilitates the movement of materials toward the discharge port.

[0095] Continuing with the above embodiment, it is more preferred that it also includes a vibration motor 3-22 that drives the upper screen 3-18 and the lower screen 3-19 to vibrate and can rotate forward and reverse. Among them, when the vibration motor 3-22 rotates forward, it is used for screening, and when it rotates reversely, it is used to discharge the material on the screen. It should be noted that through the forward and reverse design of the vibration motor 3-22, after the raw grain enters the vibrating screen, the screening of the raw grain is completed first, and then the centralized discharge is carried out, so that the overall size of the vibrating screen is small, the screening accuracy and screening efficiency are high, and the screening needs of small amounts and multiple frequencies of raw grains are met.

[0096] Continuing with the above embodiment, it is more preferred that the upper screen 3-18, the lower screen 3-19 and the temporary storage bin 3-31 are connected to each other via a buckle 3-33, and the buckle 3-33 is designed to facilitate assembly and disassembly of the three.

[0097] Following the above embodiment, more specifically, Fig.10As shown, the net sample sorting machine 4 includes an impurity suction hopper 4-1, a clean sample suction hopper 4-2 and a faulty material suction hopper 4-3. The impurity suction hopper 4-1, the clean sample suction hopper 4-2 and the faulty material suction hopper 4-3 are respectively connected to the weighing module through the feeding mechanism 2. The impurity suction hopper 4-1 is connected to the impurity receiving plate 4-5 through the impurity pipeline 4-4. The net sample suction hopper 4-2 is connected to the net sample sorting constant volume bin 4-7 through the clean sample pipeline 4-6. The net sample sorting constant volume bin 4-7 includes a net sample constant volume bin 4-8 and an imperfect particle constant volume bin 4-9. The clean sample constant volume bin 4-8 and the imperfect particle constant volume bin 4-9 are respectively connected to the moisture bulk density meter 4-12 and the imperfect particle bin through the moisture bulk density pipeline 4-10 and the imperfect particle pipeline 4-11. The net sample sorting constant volume bin 4-7 is also connected to the faulty material pipeline 4-13 connected to the faulty material suction hopper 4-3.

[0098] Among them, the impurity suction hopper 4-1 pumps the impurities in the impurity temporary storage hopper 3-10 in the weighing module to the impurity receiving tray 4-5 through the feeding mechanism 2, so as to facilitate manual observation of the impurities through the impurity receiving tray 4-5; the clean sample suction hopper 4-2 pumps the clean sample in the clean sample temporary storage hopper 3-9 in the weighing module to the clean sample sampling and constant volume bin 4-7 through the feeding mechanism 2. Because the capacity of the clean sample constant volume bin 4-8 and the imperfect particle constant volume bin 4-9 in the clean sample sampling and constant volume bin 4-7 is fixed, the excess clean sample will be discharged to the designated position through the fault material pipeline 4-13; when the screening machine 3 fails, the fault material suction hopper 4-3 is started, and the material entering the weighing module is sucked away through the feeding mechanism 2, and transported to the designated position through the fault material pipeline 4-13.

[0099] Continuing with the above embodiment, more specifically, it further includes a soybean meal suction hopper 4-14, which is connected to the screening sample temporary storage hopper 1-3 through a feeding mechanism 2, and is connected to the soybean meal temporary storage barrel 4-16 through a soybean meal pipeline 4-15. It should be noted that for soybean meal, its sampling does not need to be screened, so during quality inspection, the soybean meal suction hopper 4-14 can transport the soybean meal in the screening sample temporary storage hopper 1-3 to the soybean meal temporary storage barrel 4-16 through the feeding mechanism 2.

[0100] Continuing with the above embodiment, more specifically, it also includes a feeding locking mechanism 4-17 arranged on the clean sample and sample separation constant volume bin 4-7, and the feeding locking mechanism 4-17 is used to control the separation of the water density pipe 4-10 and the clean sample constant volume bin 4-8. Among them, the feeding locking mechanism 4-17 can be a device for ensuring that the material will not leak or slip during the feeding process, usually composed of a locking mechanism, a rotating cylinder, a fixed block and an upper roller and other components, and its working principle is to fix the feeding device through a locking mechanism to prevent vibration or slippage during the feeding process, thereby ensuring the accuracy and safety of the feeding; at the same time, if manual feeding is required, the water density pipe 4-10 can be removed from the clean sample constant volume bin 4-8, and the water density pipe 4-10 can be manually fed by humans.

[0101] It should be noted that the pneumatic conveying unit, namely the conveying mechanism 2, includes a suction machine 1 2-1 and a suction machine 2-2, which are respectively connected to each suction hopper through a steel wire hose and are responsible for conveying materials between the workstations.

[0102] The specific air intake pipeline connection is as follows: the air inlet of the grain suction machine 2-1 is connected through a steel wire hose, and a tee is set in series in the middle of the steel wire hose. The tee is respectively connected to a two-position air shut-off valve and a four-position air shut-off valve. The two-position air shut-off valve is respectively connected to the corn suction hopper 7 and the wheat suction hopper 8, and the four-position air shut-off valve is respectively connected to the clean sample suction hopper 4-2, the faulty material suction hopper 4-3, the soybean meal suction hopper 4-14 and the impurity suction hopper 4-1.

[0103] The air inlet of the grain suction machine 2-2 is connected through a steel wire hose, and a tee is arranged in series in the middle of the steel wire hose, and the tee is respectively connected to the baling suction hopper of the baler 5 and the imperfect grain suction hopper of the imperfect grain detection device 6.

[0104] The specific feed pipe connection is as follows: the gross sample divider 1 divides the sample into screening samples and packaged samples by shrinking, the discharge port of the screening sample temporary storage bucket 1-3 is connected to the bottom inlet pipe of the net sample divider 4 through a wire hose, the front end of the feed pipe is connected to a tee, one end of the tee is connected to the lower feed port of the screening machine 3, one end of the tee is connected to an electric butterfly valve, the upper end of the electric butterfly valve is connected to the manual feeding port (for manual feeding), a three-way valve is arranged on the upper end of the lower feed port of the screening machine 3, the discharge ports of the three-way valve are respectively the soybean meal discharge port, the corn discharge port and the wheat discharge port, the soybean meal discharge port is connected to the soybean meal suction hopper 4-14, the corn discharge port is connected to the corn suction hopper 7, and the wheat discharge port is connected to the wheat suction hopper 8.

[0105] The lower end of the screening machine 3 is respectively provided with an impurity discharge port located at the lower part of the impurity temporary storage bucket 3-10 and a clean sample discharge port located at the lower part of the clean sample temporary storage bucket 3-9. The impurity discharge port is connected to the impurity suction hopper 4-1 through a steel wire hose, and the clean sample discharge port is connected to a tee, one end of the tee is connected to the clean grain suction hopper 4-2, and the other end of the tee is connected to the faulty material suction hopper 4-3.

[0106] The lower end of the clean sample sorting machine 4 is provided with an imperfect grain sample discharge port located at the lower part of the imperfect grain bin, and the imperfect grain sample discharge port is connected to the imperfect grain suction hopper at the upper end of the imperfect grain detection device 6 through a steel wire hose.

[0107] The packing sample discharge port at the lower part of the packing material temporary storage bucket 1-4 is connected to the packing machine suction hopper at the upper end of the packing machine 5 through a wire hose.

[0108] Taking corn, wheat and soybean meal as examples, the specific steps of the present invention are as follows:

[0109] Corn and wheat testing:

[0110] Step 1: The sampling machine takes samples from the truck and sends them to the storage Shakron 1-1, and the lower butterfly valve of the storage Shakron 1-1 is opened;

[0111] Step 2: The material falls into the weighing hopper 1-8 of the sample divider. After weighing, the system determines whether the paddle mechanism 1-10 in the three-way valve 1-9 is working. When the material is 20-35kg, the paddle mechanism 1-10 does not work, and the material flows directly downward through the first channel 1-11. When the material is 35-70kg, the paddle mechanism 1-10 works, so that the material first flows into the second channel 1-12, and then flows into the first channel 1-11, thereby dividing the sample once more;

[0112] Taking 20-35kg material as an example, after weighing, the butterfly valve opens and the material passes through the grid divider 1-2 for dividing the material. The material on one side of the lowest grid divider 1-2 enters the packaging material temporary storage hopper 1-4, and the material on the other side enters the screening sample temporary storage hopper 1-3;

[0113] Step 3: Open the two-position air shut-off valve, open the right valve position, connect the suction machine 2-1 and the corn suction hopper 7; start the suction machine 2-1, suck the material from the screening sample temporary storage hopper 1-3 into the corn suction hopper 7, after the material transportation is completed, the suction machine 2-1 is closed, the material falls from the corn suction hopper 7 into the rotary vibrating screen 3-1, start the rotary vibrating screen 3-1, the upper screen impurities and the lower screen impurities pass through the impurity guide pipe 3-3 and fall into the impurity weighing hopper 3-8, after weighing, open the valve, the impurities fall into the impurity temporary storage hopper 3-10, the clean sample passes through the clean sample guide pipe 3-2 and falls into the clean sample weighing hopper 3-7, after weighing, open the valve, the clean sample falls into the clean sample temporary storage hopper 3-9;

[0114] Step 4: Open the first valve position on the right side of the four-position air shut-off valve to connect the suction machine 2-1 and the impurity suction hopper 4-1. After the material transportation is completed, the suction machine 2-1 is closed, and the material falls from the impurity suction hopper 4-1 into the impurity receiving tray 4-5. A person takes out the impurity receiving tray 4-5, pours out the impurities after observation, and returns the tray to its original position;

[0115] Step 5: Open the second valve position on the right side of the four-position air shutoff valve, connect the suction machine 2-1 and the clean grain suction hopper 4-2. After the material transportation is completed, the suction machine 2-1 is closed, and the material falls from the clean grain suction hopper 4-2 into the clean sample sampling and constant volume bin 4-7. The clean sample sampling and constant volume bin 4-7 is divided into the clean sample constant volume bin 4-8 and the imperfect grain constant volume bin 4-9. Open the lower plug plate of the constant volume bin, and the material falls into the moisture density meter 4-12 and the imperfect grain bin respectively. The moisture density meter directly performs sample detection and outputs data.

[0116] Step six: connect the suction machine 2-1 and the imperfect particle suction hopper, start the suction machine 2-1, and transport the materials in the imperfect particle bin to the imperfect particle suction hopper. After completion, the suction machine 2-1 is closed, the valve of the imperfect particle suction hopper is opened, and the materials fall into the imperfect particle detection equipment for detection.

[0117] Soybean meal and other powder testing:

[0118] Step 1: The sampling machine takes samples from the truck and sends them to the storage Shakron 1-1, and the lower butterfly valve of the storage Shakron 1-1 is opened;

[0119] Step 2: The material falls into the weighing hopper 1-8 of the sample divider. After weighing, the system determines whether the paddle mechanism 1-10 in the three-way valve 1-9 is working. When the material is 20-35kg, the paddle mechanism 1-10 does not work, and the material flows directly downward through the first channel 1-11. When the material is 35-70kg, the paddle mechanism 1-10 works, so that the material first flows into the second channel 1-12, and then flows into the first channel 1-11, thereby dividing the sample once more;

[0120] Taking 20-35kg material as an example, after weighing, the butterfly valve opens and the material passes through the grid divider 1-2 for dividing the material. The material on one side of the lowest grid divider 1-2 enters the packaging material temporary storage hopper 1-4, and the material on the other side enters the screening sample temporary storage hopper 1-3;

[0121] Step 3: Open the third valve position on the right side of the four-position air shut-off valve to connect the suction machine 2-1 and the soybean meal suction hopper 4-14, start the suction machine 2-1, and suck the material from the screening sample temporary storage hopper 1-3 into the soybean meal suction hopper 4-14. After the material transportation is completed, the suction machine 2-1 is closed, and the material falls from the soybean meal suction hopper 4-14 into the soybean meal temporary storage barrel 4-16.

[0122] In summary, the present invention can realize the automatic quality detection of various raw grains, integrate multiple functional modules together, solve the problems of automatic sampling, screening and weighing, packaging and sampling, automatic sampling of clean grains, automatic detection of moisture density, and automatic transportation of raw grains, impurities and surplus grains in the raw grain detection process, and greatly improve work efficiency.

[0123] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic detection device for raw grain quality, characterized in that: include: A rough sample sorting machine is used to screen the material to obtain a net sample and a packaged sample. The rough sample sorting machine conveys the net sample and the packaged sample to the screening machine and the packaging machine respectively through a feeding mechanism; A screening machine is used to screen and weigh the clean sample and obtain the weight of the clean sample and impurities. The screening machine conveys the clean sample and impurities to the clean sample separator through a feeding mechanism; The clean sample divider is used to determine the volume of the clean sample, and transport the clean sample after determination to the moisture density meter and the imperfect grain bin, and transport the impurities to the impurity receiving tray; A packing machine, used to pack the packing samples; And an imperfect grain detection device, wherein the imperfect grain bin is connected to the imperfect grain detection device via a feeding mechanism.

2. The automatic grain quality detection device according to claim 1 is characterized in that: The hair sample sorting machine comprises: A material storage shakron, the bottom of which is connected to a grid sample divider via a pipeline; A grid sample divider is used to achieve equal division of materials. A plurality of grid sample dividers are provided as required, one side of the outlet of the plurality of grid sample dividers is connected to the inlet of the adjacent grid sample divider below, and the other side of the outlet is connected to the residual material recovery channel; wherein one side of the outlet of the lowest grid sample divider is connected to the temporary storage hopper for sieved samples, and the other side of the outlet is connected to the temporary storage hopper for packaged materials; Screened sample temporary storage bucket, used for temporary storage of clean samples; A temporary storage hopper for packaging materials, used for temporary storage of packaging samples, the temporary storage hopper for packaging materials is connected to the packaging machine through a feeding mechanism; And a screening sample buffer bin is used to realize material buffering, and the screening sample buffer bin is arranged between the grid sample divider and the screening sample temporary storage bucket.

3. The automatic grain quality detection device according to claim 2 is characterized in that: A sampler weighing hopper for weighing materials is provided at the bottom of the material storage shaker, and a three-way valve is provided at the bottom of the sampler weighing hopper. A paddle mechanism is provided in the three-way valve, and the paddle mechanism is used to guide the material in the three-way valve to flow through the first channel or the second channel. The first channel and the second channel are respectively connected to the grid sampler.

4. The automatic raw grain quality detection device according to claim 2 or 3, characterized in that: The screening machine comprises: A screening module, the screening module comprising a rotary vibrating screen, a clean sample guide pipe and an impurity guide pipe, the screened sample temporary storage bucket conveys the clean sample to the rotary vibrating screen through a feeding mechanism, and the rotary vibrating screen conveys the screened clean sample and impurities to a weighing module through the clean sample guide pipe and the impurity guide pipe respectively; Weighing module, used to weigh the impurities and the clean sample respectively; And a clean sample dust removal module, the clean sample dust removal module is connected to the clean sample guide pipe and is used for dust removal of the clean sample.

5. The automatic grain quality detection device according to claim 4 is characterized in that: The clean sample dust removal module includes a dust collector, a dust removal pipe and a baffle. The dust collector is connected to the clean sample guide pipe through the dust removal pipe. The baffle is arranged in the clean sample guide pipe, and the baffle is arranged on the side of the air inlet of the dust removal pipe close to the clean sample, and is used to separate the clean sample from the air inlet.

6. The automatic grain quality detection device according to claim 4 is characterized in that: The rotary vibrating screen includes an upper screen and a lower screen, a lower screen is provided at the bottom of the upper screen, the mesh of the upper screen is larger than that of the lower screen, the upper screen is used to screen out large particles of impurities, and the large particles of impurities are discharged through the upper discharge port, and the lower screen is used to screen out small particles of impurities, and the raw grain on the lower screen is discharged through the lower discharge port; it also includes an opening and closing mechanism for controlling whether the material on the upper screen enters the upper discharge port, and the opening and closing mechanism is arranged on the upper screen.

7. The automatic raw grain quality detection device according to claim 6 is characterized in that: A bulk conical plate for evenly dispersing clean grain onto the upper screen is provided just below the feeding port of the upper screen, and a vibrating air hammer for preventing clean grain from adhering to the screen is provided below the bulk conical plate.

8. The automatic grain quality detection device according to claim 4 is characterized in that: The net sample sorting machine includes an impurity suction hopper, a clean sample suction hopper and a faulty material suction hopper, the impurity suction hopper, the clean sample suction hopper and the faulty material suction hopper are respectively connected to the weighing module through the feeding mechanism, the impurity suction hopper is connected to the impurity receiving plate through an impurity pipeline, the clean sample suction hopper is connected to the net sample sorting and constant volume bin through the clean sample pipeline, the net sample sorting and constant volume bin includes a clean sample constant volume bin and an imperfect particle constant volume bin, the clean sample constant volume bin and the imperfect particle constant volume bin are respectively connected to the moisture bulk density meter and the imperfect particle bin through a moisture bulk density pipeline and an imperfect particle pipeline, and the net sample sorting and constant volume bin is also connected to the faulty material pipeline connected to the faulty material suction hopper.

9. The automatic grain quality detection device according to claim 8, characterized in that: It also includes a soybean meal suction hopper, which is connected to the screening sample temporary storage hopper through a feeding mechanism, and the soybean meal suction hopper is connected to the soybean meal temporary storage barrel through a soybean meal pipeline.

10. The automatic raw grain quality detection device according to claim 8, characterized in that: It also includes a feeding locking mechanism arranged on the clean sample, sampling and constant volume bin, and the feeding locking mechanism is used to control the separation of the water density pipeline and the clean sample constant volume bin.

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