Sampling device for grain intake

Abstract

The application discloses a grain warehouse-entering process sampling device and relates to the technical field of grain storage. The device comprises a first conveying pipeline and a second conveying pipeline, the second conveying pipeline is connected with the first conveying pipeline, a sampling device is arranged in the first conveying pipeline, the sampling device comprises a plurality of partitions, the partitions are fixedly installed in the first conveying pipeline, the partitions divide the first conveying pipeline into a plurality of grain conveying channels and a plurality of grain sampling channels, a collecting groove is arranged between two partitions, the collecting groove is arranged obliquely, a connecting channel is arranged on one side of the first conveying pipeline, and the collecting groove and the connecting channel are communicated. The whole sampling process can be automatically controlled through components such as a servo motor and an electromagnetic valve, manual operation on the conveying pipeline is not needed, the labor intensity is reduced, and the safety hidden danger caused by manual operation is avoided.

Description

Technical Field

[0001] This invention relates to the field of grain storage technology, specifically to a sampling device for the grain entering the warehouse. Background Technology

[0002] In a modern grain storage operation system, quality inspection of grain before it enters the warehouse is a key link to ensure storage safety and quality. The current industry standard process is as follows: after the grain is initially sampled and monitored by a sampling machine, it is transported to the main conveying pipeline (main pipe) by a grain conveyor, and then distributed to each grain warehouse by several branch pipes connected below the main pipe (each branch pipe corresponds to a grain warehouse and is independently controlled by a butterfly valve).

[0003] However, traditional sampling methods have significant drawbacks: they typically involve setting up fixed sampling ports on the side wall of the main pipe, with samples being taken manually at regular intervals. This method is limited by the singularity of the sampling point and cannot cover the full cross-sectional distribution of grain during transportation. Due to the differences in size and weight of grain particles, they naturally disperse during pipeline transportation due to factors such as gravity and airflow. Manual sampling often only obtains samples from localized areas, resulting in uneven sampling that is difficult to effectively represent the true quality status of the entire batch of grain. This poses a significant risk of error for subsequent quality testing and storage management. Summary of the Invention

[0004] To address the problem of incomplete manual sampling mentioned in the background art, the present invention aims to provide a sampling device for grain entering the warehouse.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sampling device for grain entering the warehouse, comprising a first conveying pipeline and a second conveying pipeline, wherein the second conveying pipeline is connected to the first conveying pipeline, and a sampling device is provided in the first conveying pipeline; The sampling device includes several partitions, which are fixedly installed in the first conveying pipeline. The partitions divide the first conveying pipeline into several grain conveying channels and several grain taking channels. A collection trough is provided between two partitions. The collection trough is inclined. A connecting channel is provided on one side of the first conveying pipeline. The collection trough is connected to the connecting channel. The collection trough has two symmetrically arranged windows, and the collection trough is provided with two symmetrically arranged baffles. The baffles are hinged in the collection trough, and each baffle can cooperate with the corresponding window. A flap valve is installed on the connecting channel. The flap valve has a valve plate inside and two tension ropes on the valve plate. One end of each tension rope is fixed to a baffle plate.

[0006] Preferably, a perforated plate is provided between the collection tank and the connecting channel, and a triangular opening is provided on the perforated plate, which can cooperate with two baffles.

[0007] Preferably, one end of the valve plate is provided with a baffle plate, the baffle plate is correspondingly matched with the connecting channel, and the tension rope is an elastic rope.

[0008] Preferably, a silicone membrane is provided between the baffle and the collection tank.

[0009] Preferably, it also includes a grain storage box, a sampler, and a base plate. A servo motor is embedded in the upper side of the base plate, and a bracket is rotatably mounted on the upper side of the servo motor. Several sampling buckets are installed on the bracket.

[0010] Preferably, one end of the connecting channel is connected to the grain storage box, and a connecting pipe is provided between the grain storage box and the sampler, with a rotary valve installed on the connecting pipe.

[0011] Preferably, the lower end of the sample dispenser is connected to the first delivery pipeline through a return pipe, and a second solenoid valve is installed on the return pipe.

[0012] Preferably, the lower end of the sampler is also provided with a sampling tube, which is configured to cooperate with the sampling bucket, and a first solenoid valve is installed on the sampling tube.

[0013] Preferably, a torsion spring is provided between the baffle and the collection trough, and the torsion spring can abut the two baffles together.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, by setting up staggered grain conveying and grain collection channels in the first conveying pipeline, effectively diverts the grain during the conveying process. Combined with the cooperative structure of the collection trough and baffle, it can continuously and uniformly sample the grain, effectively avoiding the randomness of manual sampling and ensuring that the sample truly reflects the quality status of the entire batch of grain. The entire sampling process can be automatically controlled by components such as servo motors and solenoid valves, eliminating the need for manual operation on the conveying pipeline, reducing the intensity of manual labor, and avoiding the safety hazards caused by manual operation.

[0015] The sampler of this invention can directly reduce the size of sampled grains, returning qualified grains to the conveying pipeline while unqualified grains are collected separately. This simplifies the subsequent sample processing procedure and improves storage efficiency. The silicone membrane between the baffle and the collection trough effectively prevents impurities from entering the rotating shaft and torsion spring structure, avoiding component jamming and extending the service life of the device. The elastic tension rope ensures a tight fit between the baffle and the window, improving the stability of the device's operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the basic structure of the grain sampling device during the grain warehousing process of the present invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the basic structure of the grain sampling device during the grain warehousing process of the present invention. Figure 2 .

[0018] Figure 3 This is a cross-sectional view of the internal structure of the sampling device for the grain entering the warehouse according to the present invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the sampling device for the grain entering the warehouse according to the present invention.

[0020] Figure 5 This is a schematic diagram of the basic structure of the sampling device of the grain warehousing process sampling device of the present invention.

[0021] Figure 6 This is a schematic diagram of the grain flowing within the sampling device of the grain warehousing process of the present invention. Figure 1 .

[0022] Figure 7 This is a schematic diagram of the grain flowing within the sampling device of the grain warehousing process of the present invention. Figure 2 .

[0023] Figure 8 This is a schematic diagram of the grain flowing within the sampling device of the grain warehousing process of the present invention. Figure 3 .

[0024] Figure 9 This is a schematic diagram of the grain flowing within the sampling device of the grain warehousing process of the present invention. Figure 4 .

[0025] Figure 10 This is a schematic diagram showing the installation position of the partition of the sampling device for the grain entering the warehouse according to the present invention.

[0026] Figure 11 This is a distribution diagram of grains of different weights as they fall from an inclined pipe into a vertical pipe.

[0027] In the diagram: 101, First conveying pipeline; 1011, Grain conveying channel; 1012, Grain taking channel; 102, Second conveying pipeline; 201, Base plate; 202, Support; 203, Sampling bucket; 301, Sampler; 302, Sampling tube; 303, First solenoid valve; 304, Return sample tube; 305, Second solenoid valve; 400, Sampling device; 401, Partition plate; 402, Collection trough; 403, Baffle plate; 404, Flip valve; 405, Valve plate; 4051, Material baffle plate; 406, Connecting channel; 407, Perforated plate; 408, Tension rope; 4011, Window; 4012, Silicone membrane; 501, Grain storage box; 502, Rotary valve; 503, Connecting pipe. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-10 As shown, the grain sampling device for the grain entering the warehouse provided in this embodiment includes a first conveying pipeline 101 and a second conveying pipeline 102. The second conveying pipeline 102 is connected to the first conveying pipeline 101. A sampling device 400 is provided in the first conveying pipeline 101. In the current grain warehouse operation, after the grain is sampled and monitored by a sampling machine, it is transported to the main pipe by a grain conveyor and then enters each grain warehouse through the main pipe (the main pipe is connected to several branch pipes, each of which is installed above the corresponding grain warehouse for grain intake, and the opening and closing of the corresponding branch pipe is controlled by a butterfly valve). Currently, sampling ports are generally opened on the main pipe for manual sampling, which is not uniform enough and cannot effectively represent the state of the grain.

[0030] The sampling device 400 includes several partitions 401, which are fixedly installed in the first conveying pipeline 101. The partitions 401 divide the first conveying pipeline 101 into several grain conveying channels 1011 and several grain taking channels 1012. A collection trough 402 is provided between two partitions 401. The collection trough 402 is inclined. A connecting channel 406 is provided on one side of the first conveying pipeline 101. The collection trough 402 is connected to the connecting channel 406.

[0031] Reference Figure 5 A collection trough 402 is installed between the two corresponding partitions 401. The collection trough 402 can collect the grain that falls into the grain receiving channel 1012. (Refer to...) Figure 10 In this embodiment, four partitions 401 are provided, and the four partitions 401 are arranged in pairs opposite each other, so that the divided grain conveying channel 1011 and grain taking channel 1012 are staggered; refer to Figure 11 In the diagram, a1 represents grain with acceptable grain weight, and a2 represents grain with unacceptable grain weight. When the grain falls from the second conveying pipe 102 into the first conveying pipe 101, it will cause the grain to scatter (refer to...). Figure 11 In this embodiment, the sampling method allows for more uniform material collection. If a sampling port is installed inside the first conveying pipeline 101, the authenticity of the obtained sample will decrease.

[0032] The collection tank 402 has two symmetrically arranged windows 4011. The collection tank 402 is provided with two symmetrically arranged baffles 403. The baffles 403 are hinged in the collection tank 402. Each baffle 403 can cooperate with the corresponding window 4011. A torsion spring is provided between the baffles 403 and the collection tank 402. The torsion spring can abut the two baffles 403 together.

[0033] Reference Figure 7 The baffle 403 is kept closed by a torsion spring, forming a "human" shaped guide structure. When grain falls into the collection trough 402, it can slide out from the windows 4011 on both sides under the guidance of the baffle 403 and fall back into the first conveying pipeline 101 to continue conveying, thereby avoiding the accumulation of grain in the trough.

[0034] A flap valve 404 is installed on the connecting channel 406. A servo motor for driving the valve plate 405 to rotate is installed on one side of the flap valve 404. The valve plate 405 is provided inside the flap valve 404. Two tension ropes 408 are provided on the valve plate 405. One end of the tension rope 408 is fixed on the baffle 403. A perforated plate 407 is provided between the collecting groove 402 and the connecting channel 406. A triangular opening is provided on the perforated plate 407. The triangular opening can cooperate with the two baffles 403.

[0035] In this embodiment, refer to Figure 7 and Figure 9 When the two baffles 403 are closed, the opening on the perforated plate 407 is blocked by the baffles 403, allowing the grain to fall back into the first conveying pipe 101 through the window 4011. When the two baffles 403 are not closed, the opening on the perforated plate 407 is no longer blocked by the baffles 403, and the baffles 403 block the window 4011, so that the grain no longer falls back into the first conveying pipe 101, but passes through the opening of the perforated plate 407 and enters the connecting channel 406.

[0036] It should be noted that when the valve plate 405 rotates, the tension rope 408 connected to the valve plate 405 will pull the baffle 403, thereby causing the baffle 403 to rotate, which in turn causes the baffle 403 to block the window 4011 and connect the collection trough 402 with the connecting channel 406, allowing the grain to enter the connecting channel 406.

[0037] Under normal conditions, the baffle 403 opens in a "V" shape, guiding the grain back through the window 4011; during sampling, the tension rope 408 pulls the baffle 403 to close, simultaneously blocking the window 4011 and opening the passage with the perforated plate 407.

[0038] One end of the valve plate 405 is provided with a baffle plate 4051, which corresponds to and cooperates with the connecting channel 406. The tension rope 408 is an elastic rope. Figure 7The baffle plate 4051 can block the connecting channel 406 when the valve plate 405 is not rotating. The elastic tension rope 408 can be stretched to a certain extent. The main function of the elastic tension rope 408 is to adapt to the rotation angle of the baffle plate 403 when the valve plate 405 rotates, ensuring that the baffle plate 403 can accurately block the window 4011. At the same time, when the valve plate 405 resets, it can assist the baffle plate 403 to return to the normally closed state under the action of the torsion spring, so that the baffle plate 403 and the window 4011 can cooperate better. A silicone membrane 4012 is provided between the baffle plate 403 and the collection tank 402. The silicone membrane 4012 can prevent grain impurities from entering the rotating shaft and torsion spring of the baffle plate 403. The silicone membrane 4012 can play a sealing role, preventing grain particles from getting stuck in the gap between the baffle plate 403 and the collection tank 402, and ensuring the smooth rotation of the baffle plate 403.

[0039] This device effectively solves the problem of insufficient representativeness in traditional manual sampling methods through its pipeline partitioning design and mechanical linkage switching mechanism. Compared with traditional methods, this device can achieve uniform sampling across the entire cross-section, ensuring that the sample can truly reflect the quality of the entire batch of grain. At the same time, the device adopts automated control, eliminating the need for manual intervention, thus improving sampling efficiency and reducing labor intensity.

[0040] In practical applications, this embodiment can be seamlessly integrated with the existing conveying system of grain depots without requiring large-scale modifications to the original system; the device operates stably and reliably with low maintenance costs, effectively improving the accuracy and efficiency of grain entry inspection and providing strong technical support for grain storage management; with the grain industry's increasing requirements for quality testing, this device has broad application prospects.

[0041] This embodiment also includes a grain storage box 501, a sampler 301, and a base plate 201. The grain storage box 501 and the sampler 301 are both installed on one side of the first conveying pipeline 101 by a fixing frame. A servo motor is embedded in the upper side of the base plate 201, and a bracket 202 is rotatably installed on the upper side of the servo motor. Several sampling buckets 203 are installed on the bracket 202. The bracket 202 can rotate to align the corresponding sampling buckets 203 with the sampling tube 302 for sampling. The rotation of the bracket 202 is done manually. One end of the connecting channel 406 is connected to the grain storage box 501. A connecting pipe 503 is provided between the grain storage box 501 and the sampler 301. A rotary valve 502 is installed on the connecting pipe 503.

[0042] The lower end of the sampler 301 is connected to the first delivery pipeline 101 through the return pipe 304. A second solenoid valve 305 is installed on the return pipe 304. The lower end of the sampler 301 is also provided with a sampling pipe 302, which is correspondingly matched with the sampling bucket 203. A first solenoid valve 303 is installed on the sampling pipe 302.

[0043] Grain samplers are commonly used sample processing devices in grain or seed testing and analysis. They are mainly used to mix and reduce the grain samples obtained during the sampling process to obtain representative subsamples of a certain weight for subsequent testing and analysis. In this embodiment, the sampler 301 with the rotating sampling function divides the sampled grain into grains with qualified grain weight and grains with unqualified grain weight. The unqualified grain is discharged from the sampling tube 302, and the qualified grain is discharged from the return tube 304. When the second solenoid valve 305 is opened, the grain can return to the first conveying pipeline 101.

[0044] It should be noted that during the normal grain conveying process: grain falls from the second conveying pipeline 102 into the first conveying pipeline 101; some grain falls directly through the grain conveying channel 1011; another part of the grain falls through the grain collection channel 1012 into the collection trough 402 below; at this time, the flap valve 404 is closed, the baffle 403 is closed, and the grain is guided by the baffle 403 to slide out from the window 4011 and fall back to the bottom of the first conveying pipeline 101, and is finally conveyed to the target grain warehouse through the various branch pipes; during this process, the sampling system does not work, and all the grain enters the storage process.

[0045] Sampling process: When sampling is required, the control system starts the servo motor of the flap valve 404; the valve plate 405 rotates, and the two baffles 403 in the collection tank 402 are opened by the tension rope 408; the baffles 403 block the window 4011, while opening the opening of the perforated plate 407. At this time, after the grain falls into the collection trough 402 through the grain taking channel 1012, it no longer flows back from the window 4011, but enters the connecting channel 406 through the opening of the perforated plate 407, and then flows into the grain storage box 501 for temporary storage. Once a certain amount of sample has accumulated in the grain storage tank 501, the rotary valve 502 is opened, and the grain enters the sampler 301 through the connecting pipe 503. The sampler 301 mixes and reduces the sample. After sampling, the grain that is deemed qualified returns to the first conveying pipeline 101 through the return pipe 304 (at this time, the second solenoid valve 305 is opened) and re-enters the storage process. The grain that is deemed unqualified is discharged through the sampling pipe 302 (at this time, the first solenoid valve 303 is opened). The operator can rotate the bracket 202 to switch the empty sampling bucket 203 to the area below the sampling pipe 302 to receive the unqualified grain sample for further testing. Through the above structure, the present invention realizes automatic and uniform sampling during the continuous grain entering the warehouse. The sampling points are reasonably distributed, the samples are highly representative, and the sampling operation does not affect the normal grain transportation, thereby improving the automation level and inspection efficiency of grain depot operations.

[0046] It should be further noted that this embodiment also includes an intelligent control system linked to the equipment, with a programmable logic controller (PLC) as the core control unit. This PLC control system precisely regulates and selects the operating parameters of each component in the production process through preset programs, including but not limited to: timing control of equipment start-up and shutdown, gradient adjustment of motor speeds, and dynamic matching of material conveying rates. The PLC control system forms a closed-loop feedback mechanism with an industrial bus and sensor network, collecting operating parameters such as vibration amplitude and material flow rate in real time, and automatically optimizing the combination of operating parameters according to preset algorithms. This control architecture adopts a modular design, supporting parameter preset mode (suitable for standardized production) and adaptive adjustment mode (suitable for flexible production of multiple varieties). It should be noted that the PLC control system and its supporting industrial control protocols and signal acquisition modules all adopt mature technical solutions in the field of mechanical automation. Their specific circuit topology and programming methods are common knowledge to those skilled in the art; therefore, this specification will not elaborate on their basic implementation details.

[0047] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for grain entering the warehouse, characterized in that: It includes a first delivery pipeline (101) and a second delivery pipeline (102), the second delivery pipeline (102) being connected to the first delivery pipeline (101), and a sampling device (400) being provided in the first delivery pipeline (101). The sampling device (400) includes several partitions (401), which are fixedly installed in the first conveying pipeline (101). The partitions (401) divide the first conveying pipeline (101) into several grain conveying channels (1011) and several grain taking channels (1012). A collection trough (402) is provided between two partitions (401). The collection trough (402) is inclined. A connecting channel (406) is provided on one side of the first conveying pipeline (101). The collection trough (402) is connected to the connecting channel (406). The collection trough (402) has two symmetrically arranged windows (4011), and the collection trough (402) is provided with two symmetrically arranged baffles (403). The baffles (403) are hinged in the collection trough (402), and each baffle (403) can cooperate with the corresponding window (4011). A flap valve (404) is installed on the connecting channel (406). A valve plate (405) is provided inside the flap valve (404). Two tension ropes (408) are provided on the valve plate (405). One end of the tension rope (408) is fixed on the baffle (403).

2. The grain sampling device for the grain entering the warehouse according to claim 1, characterized in that: A perforated plate (407) is provided between the collection tank (402) and the connecting channel (406). A triangular opening is provided on the perforated plate (407), and the triangular opening can cooperate with two baffles (403).

3. The grain sampling device for the grain entering the warehouse according to claim 1, characterized in that: The valve plate (405) is provided with a baffle plate (4051) at one end, the baffle plate (4051) is correspondingly matched with the connecting channel (406), and the tension rope (408) is an elastic rope.

4. The grain sampling device for the grain entering the warehouse according to claim 1, characterized in that: A silicone membrane (4012) is provided between the baffle (403) and the collection tank (402).

5. The grain sampling device for the grain entering the warehouse according to claim 1, characterized in that: It also includes a grain storage box (501), a sampler (301) and a base plate (201). A servo motor is embedded on the upper side of the base plate (201), and a bracket (202) is rotatably mounted on the upper side of the servo motor. Several sampling buckets (203) are installed on the bracket (202).

6. The grain sampling device for the grain entering the warehouse according to claim 5, characterized in that: One end of the connecting channel (406) is connected to the grain storage box (501). A connecting pipe (503) is provided between the grain storage box (501) and the sampler (301). A rotary valve (502) is installed on the connecting pipe (503).

7. The grain sampling device for the grain entering the warehouse according to claim 5, characterized in that: The lower end of the sampler (301) is connected to the first delivery pipeline (101) through the return pipe (304), and a second solenoid valve (305) is installed on the return pipe (304).

8. The grain sampling device for the grain entering the warehouse according to claim 6, characterized in that: The lower end of the sampler (301) is also provided with a sampling tube (302), which is correspondingly matched with the sampling bucket (203). A first solenoid valve (303) is installed on the sampling tube (302).

9. The grain sampling device for the grain entering the warehouse according to claim 1, characterized in that: A torsion spring is provided between the baffle (403) and the collection groove (402), and the torsion spring can abut the two baffles (403) together.

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