Sampling device and sampling detection system

Abstract

The invention relates to a sampling device and a sampling detection system.The sampling device is located between a conveying device and a lifting tower, the sampling device is used for conducting continuous or discontinuous sampling on materials falling into the lifting tower after being conveyed by the conveying device, and the sampling device comprises a discharging channel, a material suction piece and a power piece; the upper end and the lower end of the discharging channel are open, the upper end of the discharging channel is used for being connected with a conveying device, and the lower end of the discharging channel corresponds to the feeding position of a lifting tower. The material suction piece extends into the material falling channel and is of a hollow tubular structure; the power piece is connected with the material suction piece and used for providing negative pressure so that the materials can be sucked out of the material falling channel through the material suction piece. By adopting the scheme, compared with fixed-point sampling in the prior art, continuous sampling can be carried out on the whole circulation process of the materials, and sampling is more uniform and dispersed, so that the representativeness of the sampled materials is improved, and the quality condition of a batch of materials can be better fed back.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling detection, and in particular to a sampling detection device and a sampling detection system. Background Art

[0002] The current process of raw grain entering storage is basically in a sealed state, and manual sampling and testing cannot be carried out directly, resulting in the lack of inspection at this stage.

[0003] Due to the lack of raw grain inspection process, enterprises cannot know the quality information of raw grain during the warehousing process, which often causes low-quality grain and high-quality grain to enter the granary randomly, resulting in mixed loading. Therefore, a sampling device is used for sampling, and then the sampled samples are tested using the corresponding detection system to judge the various indicators of the grain and realize the detection and output of grain indicators. The sampling device currently used is to perform sampling on the material transport vehicle. This sampling method can only perform fixed-point sampling and detection on the materials at several fixed points of the whole vehicle, making the sampling position and quantity too fixed, so there is a problem that the sampled materials cannot well reflect the quality of the whole vehicle materials. Summary of the invention

[0004] Based on this, a sampling device and a sampling detection system are provided to improve the problem in the prior art that the sampling position is too fixed, thereby failing to provide good feedback on the quality of the material of the entire vehicle.

[0005] On the one hand, a sampling device is provided, the sampling device is located between the conveying device and the lifting tower, and the sampling device is used to continuously or intermittently sample the material that falls into the lifting tower after being conveyed by the conveying device. The sampling device includes:

[0006] A material dropping channel, the upper and lower ends of which are open, the upper end of which is used to connect to the conveying device, and the lower end of which is used to correspond to the feeding position of the lifting tower;

[0007] A material suction piece, which extends into the material dropping channel and is in a hollow tubular structure;

[0008] The power piece is connected with the material suction piece and is used to provide negative pressure so as to suck the material out of the material dropping channel through the material suction piece.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] In one implementation, the cross section of the blanking channel is a trapezoidal structure that is larger at the top and smaller at the bottom; there are multiple suction pieces, and each suction piece extends into the blanking channel transversely by a different distance.

[0011] In one implementation,

[0012] Each suction member is connected to a different power member;

[0013] The material suction members are arranged at intervals and evenly distributed in the transverse direction of the material dropping channel.

[0014] In one implementation, the sampling device further includes:

[0015] A suction pipe, which is connected to the suction piece and is used to discharge the material;

[0016] The vacuum backblower is fixed on the suction pipe and is used to blow the excess material in the suction pipe back into the material drop channel or conveying device.

[0017] In one implementation, an inclined feeding port is provided at the end of the suction member extending into one end of the material dropping channel.

[0018] On the other hand, the present invention also provides a sampling detection system, including a sampling device, and the detection system further includes:

[0019] Unloading port: the unloading port is used for pouring materials;

[0020] A conveying device, one end of which is connected to the grain unloading port, and the other end of which is connected to the material dropping channel. The conveying device is used to transfer the material in the grain unloading port to the material dropping channel.

[0021] In one implementation, the delivery device comprises:

[0022] The feeding cavity is a long hollow cavity with openings at both ends;

[0023] A conveying member, the conveying member is located in the feeding cavity;

[0024] There are multiple scrapers, all of which are connected to the conveying member. The scrapers are used to push the material in the feeding cavity to move to the material drop channel.

[0025] In one implementation, the scraper is vertically arranged along the vertical direction, and the plurality of scrapers are evenly spaced apart.

[0026] In one implementation, the detection system further includes a sampling and volume determination device, a detection and volume determination and sampling device, and an automated detection device, which are connected in sequence.

[0027] The sampling and volume setting device is connected to the sampling device and is used to set the volume of the material transferred by the sampling device, so as to control the material entering the sampling and volume setting device within a set volume range;

[0028] The detection volume-fixing sampling device is used to weigh the materials;

[0029] Automated testing equipment is used to test the quality of materials.

[0030] In one implementation,

[0031] The sampling and volume setting device includes:

[0032] A sampling suction hopper, which is connected to the sampling device;

[0033] The constant volume bin is located below the sampling suction hopper and is used to hold materials;

[0034] Minimum limit sensor,

[0035] The maximum limit sensor, the minimum limit sensor and the maximum limit sensor are all fixed on the side wall of the fixed volume bin, and are used to limit the lowest material position and the highest material position in the fixed volume bin respectively;

[0036] The automated testing device includes:

[0037] The raw grain inlet is connected to the detection constant volume sampling device;

[0038] The packaging module is connected to the raw grain inlet;

[0039] Intelligent impurity removal module, which is connected to the raw grain inlet and is used to remove impurities in the material; part of the material at the raw grain inlet enters the packaging module, and the other part of the material at the raw grain inlet enters the intelligent impurity removal module;

[0040] Detect the clean grain separation port, which is connected to the intelligent impurity removal module;

[0041] Imperfect particle detection module,

[0042] Near infrared detection module,

[0043] Bulk density detection module,

[0044] Among them, the materials entering the clean grain separation port are dispersed into the imperfect grain detection module, near-infrared detection module and bulk density detection module.

[0045] The beneficial effects of the present invention are as follows: by arranging the sampling device between the conveying device and the lifting tower, sampling is performed when the material enters the lifting tower from the conveying device, so that the material can be sampled continuously, or the material can be sampled intermittently according to the sample volume required. Compared with the fixed-point sampling in the prior art, the present application can perform continuous sampling of the entire flow process of the material, and the sampling is more uniform and dispersed, thereby improving the representativeness of the sampled material and being able to better feedback the quality of a batch of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 Schematic diagram of the structure of a sampling detection system in one embodiment;

[0047] Figure 2 Schematic diagram of the structure of a sampling device in one embodiment;

[0048] Figure 3 is a schematic structural diagram of a sampling device in another embodiment;

[0049] Figure 4 Schematic diagram of the internal structure of a sampling device and a conveying device in one embodiment;

[0050] Figure 5 A schematic diagram of the structure of an automated detection device in one embodiment;

[0051] Figure 6 A top view of an automated detection device in one embodiment;

[0052] Figure 7 FIG. 1 is a schematic diagram of the structure of a sampling and volume determination device in one embodiment.

[0053] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0054] 10. Sampling device; 11. Material drop channel; 12. Material suction piece; 13. Power piece; 14. Material suction pipe; 15. Vacuum blowback device; 16. Material inlet; 17. Grain return hopper; 18. Control cabinet;

[0055] 20. Grain unloading port;

[0056] 30. Conveying device; 31. Material delivery chamber; 32. Conveying member; 33. Scraper;

[0057] 40. Sampling and volume setting device; 41. Sampling suction hopper; 42. Volume setting bin; 43. Minimum quantity limit sensor; 44. Maximum quantity limit sensor;

[0058] 50. Detection of fixed volume sampling device;

[0059] 60. Automated detection device; 61. Raw grain inlet; 62. Packing module; 63. Intelligent impurity removal module; 64. Clean grain detection and sorting outlet; 65. Imperfect grain detection module; 66. Near infrared detection module; 67. Bulk density detection module;

[0060] 70. Transport vehicle; 80. Transport pipeline. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that the illustrations provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, so the drawings only show components related to the present invention rather than the number, shape and size of components during actual implementation. The form, quantity and proportion of each component during actual implementation can be a random change, and its component layout form may also be more complicated.

[0062] In order to solve the problem in the prior art that the sampling device only directly samples fixed positions, such as sampling at fixed positions on the transport vehicle 70, the sampling positions and quantities are too fixed, and the sampling positions are only concentrated at fixed positions, so that the sampled materials cannot well reflect the quality of the whole vehicle material. If unqualified materials in the whole vehicle material happen to be located at non-sampling positions, they cannot be detected, thereby reducing the quality of the materials and causing quality problems.

[0063] In response to the above problems, the present application adds a set of automatic sampling equipment at the end of the material conveying line, in the buffer section before the material enters the elevator, to achieve random sampling at any time, and then send the samples to be tested into the testing equipment.

[0064] This application can be used for food sampling and testing, see Figure 1 The material referred to in this application may be grain or raw grain, but is not limited to grain testing; for the raw grain storage and transportation process, there is currently no unmanned automated testing system that has been put into use, which can simultaneously detect physical indicators such as thousand-grain weight, imperfect grains, impurities, and chemical indicators such as moisture and starch. In view of the complex environment of online testing, the automated system for online testing of the sampling device 10 of this application can realize automated testing, make up for the lack of testing in the raw grain storage process, and also provide corresponding data basis for quality supervision.

[0065] Therefore, the following solution is provided.

[0066] A sampling device 10, see Figure 1 and Figure 2The sampling device 10 is located between the conveying device 30 and the lifting tower. The sampling device 10 is used for continuous or intermittent sampling of the material that falls into the lifting tower after being conveyed by the conveying device 30. The sampling device 10 includes a material dropping channel 11, a material suction member 12 and a power member 13. In this way, since the sampling device 10 is arranged between the conveying device 30 and the lifting tower, it is different from the prior art that the sampling process is not arranged on the transport vehicle 70, but the sampling device 10 is arranged in the process of the material entering the lifting tower from the conveying device 30. Since all the materials enter the lifting tower from this position along the conveying device 30 in sequence, the sampling device 10 is arranged at this position, and the material can be continuously sampled, so that the sampled material can more accurately feedback the quality of the material; or intermittent sampling can be performed according to the amount of material required for sampling. Compared with the prior art method of sampling materials at fixed points on the transport vehicle 70, the intermittent sampling method has a larger sampling range and better quality feedback for a batch of materials or a whole vehicle of materials; when sampling is performed specifically, the material is transported to the drop channel 11 of the sampling device 10 by the conveying device 30, and the suction member 12 is driven by the power member 13 to absorb the material, and the material will fall into the lifting tower in sequence.

[0067] The upper and lower ends of the material drop channel 11 are open, the upper end of the material drop channel 11 is used to connect the conveying device 30, and the lower end of the material drop channel 11 is used to correspond to the feeding position of the lifting tower. In this way, the upper and lower ends of the material drop channel 11 are open, so the position of the material moving from top to bottom is sequentially, the material is transmitted to the material drop channel 11 through the conveying device 30, and then the material falls into the lifting tower through the material drop channel 11.

[0068] The suction member 12 extends into the material dropping channel 11 and is a hollow tubular structure. In this way, the hollow suction member 12 is provided, so that the material can be sucked out by the suction member 12 to be transferred to a set position.

[0069] The power member 13 is connected to the suction member 12 and is used to provide negative pressure to suck the material out of the material drop channel 11 through the suction member 12. In this way, since the suction member 12 sucks the material out, it is necessary to provide negative pressure through the power member 13, so that the material can be sucked out from the suction member 12 to achieve sampling of the material.

[0070] By adopting this solution, by setting the sampling device 10 between the conveying device 30 and the lifting tower, sampling is performed when the material enters the lifting tower from the conveying device 30, so that the material can be sampled continuously, or the material can be sampled intermittently according to the sample volume required. Compared with the fixed-point sampling in the prior art, the present application can continuously sample the entire flow process of the material, and the sampling is more uniform and dispersed, thereby improving the representativeness of the sampled material and being able to better feedback the quality of a batch of materials.

[0071] It should be noted that the "continuous or intermittent sampling" of materials in the present application does not limit the number of inspections of the sampled materials, but only indicates the selection of sampling timing. Since the subsequent automated inspection device 60 can perform multiple material inspections on the same batch of materials, the sampling device 10 can maintain continuous sampling during sampling to meet the material demand of the automated inspection device 60.

[0072] It should be noted that the sampling and testing conducted in this application are used to obtain the results to provide feedback on whether there are quality problems with the entire batch or vehicle of materials and whether the materials meet the quality requirements, so as to facilitate the timely removal and traceability of problematic materials, prevent problematic batches of materials from entering the silo and contaminating the materials in the silo, and improve control over material quality.

[0073] In some embodiments of the present application, see Figure 2 and Figure 3 The cross section of the material drop channel 11 is a trapezoidal structure with a large upper portion and a small lower portion. In this way, the material drop channel 11 is configured to be a structure with a large upper portion and a small lower portion, so that the large end of the upper portion of the material drop channel 11 is connected to the conveying device 30, and the material in the conveying device 30 is conveniently fed into the material drop channel 11; the lower end of the material drop channel 11 is configured to be a small end, so that the speed at which the material drops into the lifting tower can be appropriately reduced, and the suction member 12 disposed in the material drop channel 11 is conveniently sampled, so that the entire material can be sampled uniformly.

[0074] There are multiple suction pieces 12, and each suction piece 12 extends into the blanking channel 11 at a different distance. In this way, multiple suction pieces 12 can be set within the cross-sectional range of the blanking channel 11, so as to facilitate sampling at multiple positions of the blanking channel 11, thereby improving the balance of the sampling position distribution, so as to perform sampling at multiple different positions of the blanking channel 11 where the material flows; each suction piece 12 extends into the blanking channel 11 at a different distance, and the sampling position corresponding to each suction piece 12 is dispersed, so that the sampling position can be dispersed to multiple different positions of the blanking channel 11, so that the collected samples can comprehensively reflect the different characteristics of the entire batch of materials. The characteristics of the region can more accurately reflect the actual quality level of the batch of materials; it can also effectively reduce sampling errors, avoid excessive deviation between the sample and the whole, improve the reliability of the material quality conclusions obtained in subsequent tests, and accurately judge whether a batch of materials meets the quality requirements; in addition, the suction members 12 of the present application are separately arranged, and when local quality defects occur in the material, it is difficult to find such problems by local sampling in the prior art. The arrangement of multiple suction members 12 of the present application and the continuous sampling method can effectively avoid the omission of such problems and promptly discover the problematic batches of materials.

[0075] In some embodiments, see Figure 2 The cabinet structure on the sampling device 10 is a control cabinet 18.

[0076] In some embodiments of the present application, see Figure 1 and Figure 2 , each suction member 12 is connected to a different power member 13. In this way, by providing an independent power member 13 for each suction member 12, each suction member 12 can be individually controlled, effectively controlling the total amount of material sampled, and avoiding the problem of excessive sampling caused by synchronous sampling; in summary, when sampling, each suction member 12 can perform synchronous sampling or independent sampling, thereby improving the selection of sampling amount, sampling position, and sampling time.

[0077] See also Figure 4 , the suction members 12 are arranged at intervals and evenly distributed in the horizontal direction in the blanking channel 11. In this way, the suction members 12 are arranged at intervals and evenly distributed, the suction members 12 are arranged in the horizontal direction and the materials are passed through the gaps between the suction members 12, which effectively improves the dispersion effect of the suction members 12 on the materials, and also facilitates the suction members 12 to synchronously or intermittently sample at different positions of the blanking channel 11. The suction members 12 are evenly distributed in the horizontal direction, so that the suction members 12 can evenly absorb the materials at different positions in the horizontal direction, making the distribution of the suction members 12 more reasonable, improving the perfection of the sampling position, and thus improving the reliability of the sampling result.

[0078] In some other embodiments, see Figure 3 The suction pieces 12 are not only evenly distributed in the transverse direction, but are also long strips and arranged in parallel. The suction pieces 12 can also be arranged along the same horizontal plane of the material dropping channel 11, so that the material falls into the lifting tower from the gaps between the suction pieces 12, and the suction pieces 12 also have a certain dispersion effect on the material.

[0079] In some embodiments of the present application, see Figure 2 and Figure 3 The sampling device 10 also includes a suction pipe 14 and a vacuum blowback device 15. The suction pipe 14 is connected to the suction member 12 and is used to guide the material out. The vacuum blowback device 15 is fixed on the suction pipe 14 and is used to blow the excess material in the suction pipe 14 back into the material drop channel 11 or the conveying device 30. In this way, by arranging the vacuum blowback device 15 on the sampling device 10, the vacuum blowback device 15 is used to blow the excess material in the suction pipe 14 back into the material drop channel 11 or the conveying device 30, thereby avoiding the accumulation of materials in the suction pipe 14 and the mixing between the previous batch of materials and the next batch of materials, thereby causing the detection result of the next batch of materials to be affected by the previous batch of materials. Therefore, the vacuum blowback device 15 is arranged to avoid the accumulation of materials in the suction pipe 14 and other sampling pipes, and effectively avoids the mutual contamination between different batches of materials, thereby improving the accuracy of the material detection results.

[0080] In some embodiments of the present application, see Figure 4 , an inclined feed port 16 is provided at the end of the suction member 12 extending into one end of the material drop channel 11. In this way, the material port is provided at the end of the suction member 12, which is convenient for feeding from the end of the suction member 12, and also convenient for the material to be blown out along the suction pipe 14 when the material is connected to the vacuum blowback device 15; the feed port 16 is set to an inclined structure, thereby increasing the cross-sectional area of ​​the feed port 16, effectively increasing the contact area between the feed port 16 and the material, so as to facilitate the suction of the material at the feed port 16.

[0081] A sampling detection system, see Figure 1 , including a sampling device 10, the detection system also includes a grain discharge port 20 and a conveying device 30, the grain discharge port 20 is used for pouring materials; one end of the conveying device 30 is connected to the grain discharge port 20, and the other end of the conveying device 30 is connected to the material drop channel 11, and the conveying device 30 is used to transfer the materials in the grain discharge port 20 to the material drop channel 11. In this way, the grain discharge port 20 is set for pouring batch materials or whole vehicle materials, and the grain discharge port 20, the conveying device 30 and the material drop channel 11 are set in sequence, so that the batch materials are sequentially transported to the material drop channel 11, and then sequentially fall into the lifting tower through the material drop channel 11, so as to complete the material transfer, and in the process of material transfer, all materials need to pass through the material drop channel 11. In this application, the suction member 12 is extended into the material drop channel 11, so that the material passing through the material drop channel 11 can be sampled in the whole process, so as to improve the representativeness and reliability of the sampling for the batch materials.

[0082] In some other embodiments, see Figure 1 The device for transferring the material into the grain discharge port 20 can be a transport vehicle 70 for dumping, or other device for dumping, or other material transfer mechanism.

[0083] In some embodiments of the present application, see Figure 4 The conveying device 30 includes a feeding cavity 31, a conveying member 32 and a scraper 33. The feeding cavity 31 is a long hollow cavity with openings at both ends. The conveying member 32 is located in the feeding cavity 31. There are multiple scrapers 33, all of which are connected to the conveying member 32. The scrapers 33 are used to push the material in the feeding cavity 31 to move to the material drop channel 11. In this way, the material is conveyed by the conveying member 32 arranged in the feeding cavity 31. A plurality of scrapers 33 are arranged on the conveying member 32. When the scrapers 33 are used to drive the material to move along the conveying member 32, the scrapers 33 can provide thrust for the material, pushing the material into the material drop channel 11, so that the material is continuously transferred from the unloading port 20 to the material drop channel 11.

[0084] Specifically, the scraper 33 performs a cyclic motion in one direction driven by the conveying member 32 .

[0085] In some other embodiments, see Figure 4 The conveying device 3 is a chain-type scraper conveyor, the conveying member 32 is a chain, and the scraper 33 is welded or fixed on the chain. The conveying member 32 is a closed-loop chain structure, so the conveying member 32 can be divided into an upper conveying chain and a lower conveying chain. The lower conveying chain moves toward the direction of the material dropping channel 11 to push the material into the material dropping channel 11; the lower conveying chain moves toward the direction of the grain unloading port 20 to form a structure with circular motion and continuous material pushing.

[0086] Specifically, the shape and size of the scraper 33 are designed according to the characteristics of the material and the conveying requirements; for example, for bulk materials, the scraper 33 may be designed to be thicker and wider to ensure that the material can be effectively pushed forward; for powdered materials, the scraper 33 may have better sealing properties to prevent material leakage.

[0087] In some embodiments, see Figure 1 A conveying pipeline 80 is provided between the sampling device 10 and the automatic detection device 60 , and the sampling is conveyed and circulated through the corresponding conveying pipeline 80 , and the material is also refluxed through the corresponding conveying pipeline 80 .

[0088] In some embodiments of the present application, see Figure 4 , the scraper 33 is vertically arranged in the vertical direction, and the scrapers 33 are evenly spaced. In this way, since the scraper 33 is fixed on the conveying member 32, the scraper 33 is evenly arranged on the conveyor belt to facilitate the balance of the material transportation amount.

[0089] Specifically, the scraper 33 is in the shape of an elongated strip, and the length direction thereof is perpendicular to the moving direction of the conveying member 32 .

[0090] In some embodiments of the present application, see Figure 1 The detection system further includes a sampling and volume setting device 40, a detection and volume setting sampling device 50 and an automatic detection device 60 which are connected in sequence. The sampling and volume setting device 40 is connected to the sampling device 10 and is used to set the volume of the material transferred by the sampling device 10, so as to control the material entering the sampling and volume setting device 40 within a set volume range. In this way, the sampling and volume setting device 40 is used to set the volume of a batch of materials to be tested, so as to make a preliminary judgment on the volume of the materials required for the test.

[0091] The detection volume determination sampling device 50 is used to weigh the material. In this way, the detection volume determination sampling device 50 is used to weigh the material in terms of weight. When used specifically, the sampling and volume determination device 40 is first used to take a certain volume of material, and then the part of the material is transferred to the detection volume determination sampling device 50, and the material is accurately taken by weight in the detection volume determination sampling device 50.

[0092] The automatic detection device 60 is used to detect the quality of the material. In this way, after the volume and weight of the material are determined, the material enters the automatic detection device 60 to detect the quality of the material.

[0093] In some embodiments of the present application, see Figure 7 The sampling and constant volume device 40 includes a sampling suction hopper 41, a constant volume bin 42, a minimum quantity limit sensor 43 and a maximum quantity limit sensor 44. The sampling suction hopper 41 is connected to the sampling device 10; the constant volume bin 42 is located below the sampling suction hopper 41, and the constant volume bin 42 is used to accommodate materials; the minimum quantity limit sensor 43 and the maximum quantity limit sensor 44 are both fixed on the side wall of the constant volume bin 42, and are respectively used to limit the lowest material position and the highest material position in the constant volume bin 42. In this way, the function of the sampling and volume determination device 40 is to take a certain amount of material and control the material amount within a set volume range. Therefore, a minimum limit sensor 43 and a maximum limit sensor 44 are provided in the sampling and volume determination device 40. The minimum limit sensor 43 and the maximum limit sensor 44 are used to limit the holding volume of the material in the volume determination bin 42, so that the material volume in the sampling and volume determination device 40 is maintained between the lowest material position and the highest material position.

[0094] See also Figure 5 and Figure 6 The automatic detection device 60 includes a raw grain inlet 61, a packaging module 62, an intelligent impurity removal module 63, a clean grain detection outlet 64, an imperfect grain detection module 65, a near infrared detection module 66 and a bulk density detection module 67. The raw grain inlet 61 is connected to the detection volume determination and sampling device 50; the packaging module 62 is connected to the raw grain inlet 61; the intelligent impurity removal module 63 is connected to the raw grain inlet 61, and the intelligent impurity removal module 63 is used to remove impurities in the material; part of the raw grain inlet 61 enters the packaging module 62, and the other part of the raw grain inlet 61 enters the intelligent impurity removal module 63; the clean grain detection outlet 64 is connected to the intelligent impurity removal module 63. In this way, after the material enters the automatic detection device 60, various operations and tests will be carried out in sequence to obtain the result of whether the material is qualified.

[0095] Among them, see Figure 5 , the materials entering the clean grain detection port 64 are dispersed into the imperfect grain detection module 65, the near infrared detection module 66 and the bulk density detection module 67. In this way, the impurity-free materials are divided into several portions, so that the materials enter different detection modules respectively to detect the corresponding parameters. The clean grain after impurity removal enters the clean grain detection port 64, and then dispersed into various detection modules, namely the imperfect grain detection module 65, the near infrared detection module 66 and the bulk density detection module 67. Relevant detection indicators such as moisture, imperfect grains, thousand-grain weight, protein, gluten, bulk density, and mildew can be obtained.

[0096] In some embodiments, see Figure 3 Since the material after inspection by the automated inspection device 60 will be returned to the conveying device 30 for recycling, the sampling device 10 also includes a grain return hopper 17, which is located above the material drop channel 11. The grain return hopper 17 is used to recover the inspected material and convey it back to the top of the material drop channel 11, which is one end of the conveying device 30.

[0097] Since the present application can be used in the process of sampling and measuring grains, some modules and components are named with the word "grain", but the naming should not be a limitation on the scope of use of the present device. The present application can be used for grain detection and sampling, but is not limited to grains, and can also be used for other powders, particles or small block materials such as medicinal materials.

[0098] In some other embodiments, see Figure 7 The constant volume bin 42 has a structure that is larger at the top and smaller at the bottom. Since the material of the constant volume bin 42 enters from the suction hopper located above, the upper part of the constant volume bin 42 is set as the large end to facilitate the entry of the material; since the material of the constant volume bin 42 is discharged from the lower end, the lower end of the constant volume bin 42 is the small end and is connected to the detection constant volume sampling device 50. The detection constant volume sampling device 50 needs to weigh the weight of the material. Therefore, the discharge end of the constant volume bin 42 is set as the small end, which is convenient for controlling the discharge amount of the constant volume bin 42, thereby facilitating the adjustment of the weight of the material entering the detection constant volume sampling device 50.

[0099] In other embodiments, after the detection is completed, that is, after the material is processed by the automated detection device 60, the material is transported back to the conveying device 30 to reduce the loss of the material.

[0100] The workflow of this application can be roughly divided into: 1. The grain truck unloads into the grain unloading port 20; 2. The conveying device 30 is started; 3. The automatic detection device 60 is started; 4. The sampling device 10 starts random sampling; 5. The sampling and volume setting device 40 completes the volume setting of the material; 6. The material enters the detection and volume setting sampling device 50; 7. After the sampling is completed, it enters the automatic detection device 60; 8. In the automatic detection device 60, part of the samples begin to be packaged and retained, and the other part of the samples enters the intelligent impurity removal module 63; 10. After the impurities are removed, the grain is divided into several parts after passing through the clean grain separation port 64 and enters the imperfect grain detection module 65, the near-infrared detection module 66 and the bulk density detection module 67 respectively; 11. After the detection is completed, the sample is recovered to the conveying device 30. During the whole process, the vacuum suction machine provides negative pressure as the conveying power for sample circulation and sampling. The packaged samples are retained as parallel samples for subsequent re-inspection.

[0101] Among them, "the sampling device 10 starts random sampling" can be understood as that the sampling device 10 can sample continuously or intermittently; the opening timing of each suction member 12 can also be set to be opened at intervals, or to be opened at the same time within a local time.

[0102] The process of material entering the warehouse is as follows: 1. First, the material truck unloads the material onto the conveying device 30; 2. The material is transported to the elevator through the scraper 33, the conveying member 32 and the drop channel 11 in turn; 3. The material on the elevator is lifted to the top of the silo; 4. Then it is sent to the designated silo by the conveyor line on the top of the silo.

[0103] Since materials are divided into different sections before entering the warehouse, such as entering the warehouse in the order of suppliers, the qualification of the materials in the entire transportation process can be detected and fed back in time, that is, the materials will be put into the warehouse silo only after the qualified inspection results are issued.

[0104] The design ideas for the operation process and sampling timing of this application are as follows: (1) Corresponding to the four steps of the above-mentioned "material entry process", in the entire process of raw grain entering the warehouse, the sampling and testing at steps 3 to 4 is relatively delayed, so the sampling and testing of this scheme initially excludes steps 3 to 4, and the initial choice is to perform sampling inspections at steps 1 or 2; (2) In the unloading process of the first half of step 1, the unloading speed of a vehicle is relatively fast, often only taking 2 to 3 minutes, while the equipment detection time takes 3 minutes. If the sampling and testing is set at step 1, the detection time will be insufficient, so the unloading of raw grain in the first half of step 1 is again excluded as a sampling and testing point; (3) In the second half of step 1, during the process of scraper 33 transporting grain Sampling is difficult because the conveying device 30 is fully enclosed to avoid dust, and the scraper 33 is in a reciprocating motion during its movement, leaving no space for full coverage sampling. Therefore, the second half of step 1 during the process of the scraper 33 conveying grain is excluded as a sampling detection point. In summary, the sampling detection point of this scheme is selected in step 2; (4) In step 2, there is a space that can be used during the process of the raw grain falling from the conveying device 30 to the elevator. Sampling is performed here, and it takes 10 to 15 minutes for the scraper to deliver a truckload of samples. The automated detection system can perform 3 to 5 sampling tests during this process, and the data obtained is more representative.

[0105] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by "lateral", "width", "vertical", "horizontal", "top", "bottom", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0107] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A sampling device, characterized in that: The sampling device (10) is located between the conveying device (30) and the lifting tower. The sampling device (10) is used to continuously or intermittently sample the material that falls into the lifting tower after being conveyed by the conveying device (30). The sampling device (10) comprises: A material dropping channel (11), wherein the upper and lower ends of the material dropping channel (11) are open, the upper end of the material dropping channel (11) is used to connect to the conveying device (30), and the lower end of the material dropping channel (11) is used to correspond to the feeding position of the lifting tower; A material suction piece (12), the material suction piece (12) extends into the material dropping channel (11) and is in a hollow tubular structure; A power member (13), the power member (13) is connected to the material suction member (12) and is used to provide negative pressure to suck the material out of the material dropping channel (11) through the material suction member (12).

2. The sampling device according to claim 1, characterized in that: The cross section of the material dropping channel (11) is a trapezoidal structure that is larger at the top and smaller at the bottom. There are a plurality of material suction pieces (12), and each of the material suction pieces (12) extends transversely into the material dropping channel (11) by a different distance.

3. The sampling device (10) according to claim 2, characterized in that: Each of the material suction members (12) is connected to a different power member (13); The material suction members (12) are arranged at intervals and are evenly distributed in the transverse direction within the material dropping channel (11).

4. The sampling device according to claim 1, characterized in that: The sampling device (10) further comprises: A suction pipe (14), the suction pipe (14) is connected to the suction member (12) and is used to discharge the material; A vacuum backblower (15), wherein the vacuum backblower (15) is fixed on the suction pipe (14), and the vacuum backblower (15) is used to blow excess material in the suction pipe (14) back into the material dropping channel (11) or the conveying device (30).

5. The sampling device according to claim 1, characterized in that: An inclined material inlet (16) is provided at the end of the material suction member (12) extending into one end of the material dropping channel (11).

6. A sampling detection system, characterized in that: Comprising the sampling device according to any one of claims 1 to 5, the detection system further comprises: A grain unloading port (20), wherein the grain unloading port (20) is used for pouring materials; A conveying device (30), one end of which is connected to the grain unloading port (20), and the other end of which is connected to the material delivery channel (11), and the conveying device (30) is used to transfer the material in the grain unloading port (20) to the material delivery channel (11).

7. The sampling detection system according to claim 6, characterized in that: The conveying device (30) comprises: A material delivery cavity (31), wherein the material delivery cavity (31) is a long hollow cavity with openings at both ends; A conveying member (32), wherein the conveying member (32) is located in the material delivery cavity (31); A scraper (33), wherein the scraper (33) is provided in plurality and all are connected to the conveying member (32), and the scraper (33) is used to push the material in the material delivery cavity (31) to move to the material drop channel (11).

8. The sampling detection system according to claim 7, characterized in that: The scraper (33) is vertically arranged along the vertical direction, and a plurality of the scrapers (33) are evenly spaced apart.

9. The sampling detection system according to claim 6, characterized in that: The detection system also includes a sampling and volume determination device (40), a detection and volume determination and sampling device (50), and an automated detection device (60) which are connected in sequence. The sampling and volume setting device (40) is connected to the sampling device (10) and is used to set the volume of the material transferred by the sampling device (10), so as to control the material entering the sampling and volume setting device (40) within a set volume range; The detection, volume determination and sampling device (50) is used to weigh the material; The automatic detection device (60) is used to perform quality detection on materials.

10. The sampling detection system according to claim 9, characterized in that: The sampling and volume setting device (40) comprises: A sampling suction hopper (41), wherein the sampling suction hopper (41) is connected to the sampling device (10); A constant volume bin (42), the constant volume bin (42) is located below the sampling suction hopper (41), and the constant volume bin (42) is used to contain materials; Minimum limit sensor (43), A maximum quantity limit sensor (44), the minimum quantity limit sensor (43) and the maximum quantity limit sensor (44) are both fixed on the side wall of the fixed volume bin (42), and are used to limit the lowest material position and the highest material position in the fixed volume bin (42), respectively; The automated detection device (60) comprises: A raw grain inlet (61), the raw grain inlet (61) being connected to the detection, constant volume and sampling device (50); A packing module (62), the packing module (62) being connected to the raw grain inlet (61); an intelligent impurity removal module (63), the intelligent impurity removal module (63) being connected to the raw grain inlet (61), and the intelligent impurity removal module (63) being used to remove impurities in the material; part of the material from the raw grain inlet (61) enters the packaging module (62), and another part of the material from the raw grain inlet (61) enters the intelligent impurity removal module (63); A clean grain detection outlet (64) is connected to the smart impurity removal module (63); Imperfect particle detection module (65), Near infrared detection module (66), Bulk density detection module (67), The material entering the clean grain detection outlet (64) is dispersed into the imperfect grain detection module (65), the near-infrared detection module (66) and the bulk density detection module (67).

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