A detection tool and a grain unloading device

Abstract

The application provides a detection tool and a grain unloading device, and relates to the technical field of detection. The detection tool comprises a tool main body and a detection assembly. A first opening in communication with a grain storage position is formed in the tool main body, and a second opening in communication with a grain unloading position is also formed in the tool main body, and a cavity is formed between the first opening and the second opening. The detection assembly comprises a detection piece and a plugging piece. The detection piece is installed in the tool main body, and a detection position of the detection piece is arranged towards the cavity and at least partially extends into the cavity. The plugging piece is slidingly installed on the tool main body and is used for closing or opening the second opening. When the detection tool is used, the detection piece can be calibrated at regular time intervals, so that the detection accuracy of the detection piece is ensured, and the situation that the detection result is abnormal or the detection result fluctuates greatly is prevented.

Description

Technical Field

[0001] This application relates to the field of detection technology, and more specifically, to a detection tooling and grain unloading device. Background Technology

[0002] In the pig farming industry, the finished feed tanks used for storing grain usually require moisture testing of the grain during the unloading process. This is to ensure timely and accurate understanding of the grain's specific condition and to provide early warnings for any abnormal grain. This prevents substandard or abnormal grain from flowing into or out of the farm, which could lead to losses in grain costs or other feeding problems.

[0003] In related technologies, the moisture content of flowing grain is usually detected directly through sensors. However, the detection results are often highly volatile, and the sensors cannot be calibrated. After long-term operation, abnormal detection may occur. Utility Model Content

[0004] In order to at least address some of the deficiencies mentioned in the related technologies, this application provides a detection tooling and grain unloading device.

[0005] To achieve the above objectives, this application provides a detection fixture for detecting moisture content at the grain unloading port. The detection fixture includes a main body and a detection component. The main body has a first opening communicating with the grain storage location, and a second opening communicating with the grain unloading location, forming a cavity between the first and second openings. The detection component includes a detection element and a sealing element. The detection element is installed within the main body, with its detection position facing the cavity and at least partially extending into it. The sealing element is slidably mounted on the main body and is used to close or open the second opening.

[0006] Furthermore, the main body of the tooling is configured as a fixed pipe, which is positioned at the unloading port along the unloading direction.

[0007] Furthermore, a partition plate is inclinedly arranged inside the fixed pipe along the unloading direction, and the partition plate and the side wall of the fixed pipe together form an installation cavity, which is not connected to the cavity; the detection element is installed in the installation cavity.

[0008] Furthermore, the partition plate has a through hole connecting the mounting cavity and the cavity body, and the detection element is set as a moisture sensor, with the detection position of the moisture sensor sealed and installed in the through hole.

[0009] Furthermore, the sealing component is configured as a sealing plate, and a slot is provided on the main body of the tooling near the second opening. The sealing plate can be inserted into the slot in a direction perpendicular to the unloading direction to seal the second opening.

[0010] Furthermore, the projected area of ​​the first opening along the unloading direction is S1, and the projected area of ​​the second opening along the unloading direction is S2, satisfying: S1 > S2.

[0011] Furthermore, the main body of the tooling is provided with a conduit, which is installed on the metal mesh at the grain unloading port. One end of the conduit extends into the mounting cavity for threading the wire harness of the detection element.

[0012] Furthermore, the main body of the tooling is configured as a buffer chamber, which is installed between the grain storage tank and the conveying pipeline. The first opening communicates with the grain storage tank, a material receiving pipe is installed at the second opening, and the detection element is disposed on the buffer chamber and located close to the material receiving pipe.

[0013] Furthermore, the material receiving tube is provided with a switch for opening or closing the material receiving tube.

[0014] This application also provides a grain unloading device, including a grain unloading port and the detection fixture described in any of the above embodiments, wherein the detection fixture is installed at the grain unloading port.

[0015] With the above technical solution, when using the testing fixture of this application, the main body of the fixture is installed at the grain unloading port. The grain released from the grain storage position will pass through the grain unloading port, and at least a portion of the grain will enter the cavity from the first opening and flow out of the cavity from the second opening to the grain unloading position. During the process of the grain flowing through the main body of the fixture, the testing component can detect the moisture content of the grain in real time.

[0016] When calibrating the test piece, slide the sealing component to block the second opening of the fixture body, and pour the calibrated grain into the fixture body from the first opening. After testing, slide the sealing component in the opposite direction to open the second opening, allowing the calibrated grain to flow out normally. Similarly, during the testing process, the second opening can be blocked at any time using the sealing component to keep the grain flowing into the fixture body stationary for more accurate testing.

[0017] The testing fixture of this application can be calibrated regularly during use to ensure the testing accuracy of the test pieces and prevent abnormal or large fluctuations in test results.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the detection fixture provided in the first embodiment of this application from one perspective; Figure 2 Provided for the first embodiment of this application Figure 1 Sectional view at point AA; Figure 3 This is a structural schematic diagram of the testing fixture provided in the first embodiment of this application from another perspective; Figure 4 This is a schematic diagram of the detection fixture provided in the second embodiment of this application from one perspective; Figure 5 This is a structural schematic diagram of the testing fixture provided in the second embodiment of this application from another perspective.

[0021] icon: 100-Main tooling; 110-Cavity; 120-First opening; 130-Second opening; 140-Conduit; 150-Material extraction pipe; 200-Detection component; 210-Detection piece; 220-Sealing piece; 230-Divider plate; 240-Installation cavity; 300-Grain storage tank. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] This embodiment provides a testing fixture to solve the problems in related technologies, such as the difficulty in calibrating sensors, the tendency for abnormal test results, or the large fluctuations in test results.

[0026] Please see Figures 1 to 5 This embodiment provides a detection fixture for detecting moisture content at the grain unloading port. The detection fixture includes a fixture body 100 and a detection component 200. The fixture body 100 has a first opening 120 communicating with the grain storage location and a second opening 130 communicating with the grain unloading location. A cavity 110 is formed between the first opening 120 and the second opening 130. The detection component 200 includes a detection element 210 and a sealing element 220. The detection element 210 is installed inside the fixture body 100, and the detection position of the detection element 210 is facing the cavity 110 and at least partially extends into the cavity 110. The sealing element 220 is slidably installed on the fixture body 100 and is used to close or open the second opening 130.

[0027] Specifically, the entire testing fixture is installed on the unloading channel between the grain storage location and the downstream unloading location. The first opening 120 of the fixture body 100 is connected to the discharge port of the grain storage tank, and the second opening 130 is connected to the subsequent unloading pipeline or conveyor belt, ensuring that the grain can flow smoothly through the interior of the fixture during normal unloading.

[0028] During routine grain unloading operations, the sliding sealing component 220 is kept in the open position, ensuring the second opening 130 is unobstructed. When the grain storage tank begins discharging, the grain flows from the first opening 120 into the cavity 110 within the main body of the tooling 100, and then flows out through the second opening 130 by gravity or material flow force, entering the normal unloading process. During this process, the detection component 210, installed inside the main body of the tooling 100 with its detection end facing the cavity 110, continuously performs real-time online detection of the moisture content of the grain flowing through the cavity 110, and transmits the data to the monitoring system, achieving continuous monitoring of the moisture status of the incoming grain.

[0029] To ensure the long-term accuracy of the detector 210, it can be calibrated according to a preset cycle, such as per shift, daily, or based on usage frequency. During operation, first slide the sealing component 220 to the closed position, completely blocking the second opening 130. At this point, the cavity 110 becomes a relatively enclosed space. Then, standard grain samples with known precise moisture content are poured into the cavity 110 through the first opening 120 until it is full or reaches the effective detection range of the detector 210. Because the second opening 130 is blocked, the standard samples will remain stably within the cavity 110, forming a static state. The detector 210 measures this batch of static standard samples. Based on the difference between the measured value and the standard value, the system automatically or manually adjusts the output parameters or correction coefficients of the detector 210 to complete the calibration. After calibration, slide the sealing component 220 in the reverse direction to open the second opening 130, allowing the standard samples in the cavity 110 to be smoothly discharged, restoring the normal grain unloading process.

[0030] During routine testing, if abnormal fluctuations or exceeding the preset threshold are detected in the moisture reading of the detector 210, the operator slides the sealing component 220 to close the second opening 130, temporarily halting the flowing grain within the cavity 110. Once the grain has completely settled, the detector 210 measures again. Because interference from material flow, such as particle collisions, uneven distribution, and airflow effects, is eliminated, the obtained detection data is more stable and accurate. This helps determine whether the abnormality is due to actual grain quality or temporary sensor interference, leading to more reliable decisions and preventing false alarms or missed detections.

[0031] In summary, the testing fixture of this embodiment can periodically calibrate the test piece 210, improving its accuracy and stability. The calibration and verification process of the test piece 210 can be completed simply by sliding the sealing component 220, without the need for complex tools or professional personnel, making the operation simple and quick.

[0032] In one embodiment, exemplarily, such as Figures 1 to 3 As shown, the main body 100 of the tooling is configured as a fixed pipe, which is positioned at the unloading port along the unloading direction. After the grain flows out of the storage tank, it flows naturally and smoothly through the cavity 110 of the fixed pipe before flowing to downstream equipment, avoiding blockages, bridging, or poor flow caused by structural abrupt changes. The smooth interior of the pipe, arranged along the flow direction, minimizes grain accumulation in the detection area, preventing mold, cross-contamination, or difficulties in cleaning.

[0033] The tubular structure, positioned along the unloading direction, allows the grain to maintain a natural flow state as it passes through the detection chamber 110. The grain's flow velocity, density, and distribution more closely resemble actual unloading conditions, making the data acquired by the detection element 210 more representative and accurately reflecting the moisture content of the entire batch of grain. Simultaneously, it avoids disturbance and stratification. Vertical or horizontal insertion designs could disrupt the grain flow, leading to particle stratification, such as fine powder floating and large particles sinking, affecting detection uniformity. The tubular structure positioned along the flow direction maintains the original mixed state of the material, improving the reliability of the detection results.

[0034] In one embodiment, exemplarily, such as Figures 1 to 3 As shown, a partition plate 230 is inclinedly arranged inside the fixed pipe along the grain unloading direction. The partition plate 230 and the side wall of the fixed pipe together form an installation cavity 240, which is not connected to the cavity 110. The detection element 210 is installed inside the installation cavity 240. During the unloading process, the grain flows at a relatively high velocity, and the direct impact of particles on the sensor probe can easily cause mechanical damage or surface contamination. By isolating the detection element 210 in the independent installation cavity 240 through the partition plate 230, it is not directly exposed to the mainstream grain flow path, reducing the risk of physical wear.

[0035] The separator 230 is inclined along the unloading direction, which can guide the grain smoothly through the main cavity 110, avoiding the formation of eddies or stagnant areas and reducing the risk of bridging and blockage. It also prevents the detector 210 from becoming a flow obstruction. If the detector 210 extends directly into the main cavity 110, its probe will become a flow obstruction, disrupting the flow field and causing local accumulation or uneven flow velocity. By moving the detector 210 to the mounting cavity 240, there are no protruding parts in the main cavity 110, resulting in more uniform flow and stronger representativeness of the detection.

[0036] The mounting cavity 240 is not connected to the main cavity 110. The mounting cavity 240 can be independently sealed to prevent dust and moisture from entering, protect the detection circuit and wiring, improve electrical safety, and adapt to the harsh environment of high dust and high humidity in the feed workshop.

[0037] In one embodiment, exemplarily, such as Figures 1 to 3 As shown, the partition plate 230 has a through hole connecting the mounting cavity 240 and the cavity 110. The detection element 210 is a moisture sensor, and the detection position of the moisture sensor is sealed and installed in the through hole. By sealing the detection probe of the moisture sensor in the through hole, its front end extends directly into the main cavity 110 and contacts the flowing or stationary grain, the moisture content of the grain can be directly and in real time, improving the detection sensitivity and response speed. The core components of the sensor, such as the circuit part and the wiring terminals, are still located in the independent mounting cavity 240, avoiding direct damage from dust, moisture, and mechanical impact.

[0038] If the sensor is completely isolated within the mounting cavity 240 and detection is only performed indirectly through the partition plate 230, the signal may be attenuated or distorted due to factors such as material thickness and dielectric properties. However, by using a through-hole to allow the probe to directly contact the grain, interference from intermediate media is avoided, ensuring the authenticity and accuracy of the measurement data. In this embodiment, direct contact allows the sensor to instantly detect changes in grain moisture content, especially during dynamic grain unloading, enabling rapid capture of moisture fluctuations between batches and improving the timeliness of monitoring.

[0039] In one embodiment, exemplarily, such as Figures 1 to 3 As shown, the sealing component 220 is a sealing plate. A slot is provided on the main body 100 of the tooling near the second opening 130. The sealing plate can be inserted into the slot in a direction perpendicular to the unloading direction to seal the second opening 130. The sealing plate achieves opening and closing through horizontal insertion and removal, eliminating the need for motors, cylinders, or complex linkage mechanisms. This results in a simple structure and low failure rate. During operation, only manual intervention or a simple actuator is required to complete the insertion and removal actions, avoiding system downtime due to mechanical wear, jamming, or seal failure, thus improving the reliability of this embodiment.

[0040] Operators can quickly insert the sealing plate into the slot to complete the sealing, or pull it out to open the slot. The whole process is intuitive and labor-saving, making it particularly suitable for scenarios like this one, where periodic calibration or anomaly verification is required. Furthermore, the slot structure facilitates the integration of pneumatic or electric push rod devices to achieve automatic insertion and removal of the sealing plate. This, combined with the control system, enables automatic sealing, static detection, and automatic opening operations, enhancing the level of intelligence.

[0041] For example, please continue reading Figures 1 to 3 The projected area of ​​the first opening 120 along the unloading direction is S1, and the projected area of ​​the second opening 130 along the unloading direction is S2, satisfying that S1 > S2. With an enlarged inlet and a narrowed outlet, the structure of the detection fixture is similar to a converging flow channel or throttling orifice. When grain enters the cavity 110 through the larger first opening 120, it must exit through the smaller second opening 130, resulting in a region within the cavity 110 with reduced local flow velocity and increased material accumulation. The lower flow velocity means the grain stays in the cavity 110 longer, flows more smoothly, and is easier for the detection element 210 to perform accurate detection. When the second opening 130 is blocked for calibration or verification, the grain can reach a stationary state more quickly, reducing the interference of turbulence and vibration on the detection signal, thereby obtaining a more stable and repeatable moisture reading.

[0042] The larger first opening 120 ensures that grain flows quickly and fully from the grain storage tank into the tooling cavity 110, avoiding insufficient feeding or bridging due to a small inlet. The smaller second opening 130 makes it easier for grain to accumulate in the cavity 110, especially during testing. It effectively retains a certain amount of grain, ensuring that the cavity 110 is fully filled, allowing the testing piece 210 to contact a sufficient amount of sample, thus improving the representativeness and reliability of the test.

[0043] In one embodiment, exemplarily, such as Figures 1 to 3 As shown, a conduit 140 is installed on the main body 100 of the tooling, and the conduit 140 is mounted on the metal mesh at the unloading port. One end of the conduit 140 extends into the mounting cavity 240 for threading the wire harness of the detection element 210. If the signal wire of the detection element 210 is directly exposed to the external environment, it is highly susceptible to mechanical damage or chemical corrosion. The conduit 140 can be made of a suitable material according to the actual working environment, giving it good compressive strength, tensile strength, and abrasion resistance. By wrapping the wire harness along its entire path with the conduit 140, the wire harness can be effectively protected.

[0044] Inspection fixtures are typically secured at the unloading port using flanges, clamps, or bolts. However, during high-flow, high-impact unloading processes, relying solely on the main body connection may result in significant vibration and shear forces, posing a risk of loosening. By fixing the conduit 140 to the metal mesh at the unloading port, additional mechanical anchor points are added to the inspection fixture, creating a multi-point support structure with the main body connection and the conduit 140 providing auxiliary fixation. This significantly improves the overall stability of the installation.

[0045] In one embodiment, exemplarily, such as Figure 4 , Figure 5 As shown, the main body 100 of the tooling is configured as a buffer chamber, which is installed between the grain storage tank 300 and the conveying pipeline. The first opening 120 communicates with the grain storage tank 300, and a material intake pipe 150 is installed at the second opening 130. The detection component 210 is mounted on the buffer chamber and positioned close to the material intake pipe 150. In this embodiment, unlike the previous embodiment, the main body of the detection tooling no longer uses a fixed pipe structure but is designed as a buffer chamber, installed as a whole between the outlet of the grain storage tank 300 and the downstream conveying pipeline. Specifically, the first opening 120 communicates with the grain storage tank 300 to receive grain flowing out of the tank; the second opening 130 is equipped with a material intake pipe 150 to guide the grain to the conveying pipeline; and the detection component 210 is mounted on the buffer chamber body and positioned close to the material intake pipe 150.

[0046] During the unloading process of the grain storage tank 300, especially when it is nearing empty, the grain flow is prone to pulsating or intermittent flow. The buffer tank, acting as an intermediate transition container, can temporarily store a certain amount of grain, making the discharge more continuous and stable, and avoiding drastic fluctuations in the detection signal due to sudden changes in flow rate. Furthermore, when grain falls directly from a height into the tank at a relatively high speed, it easily generates dust and impact. The buffer tank can effectively slow down the falling speed of the material, creating a slow-flowing or quasi-static environment, providing more ideal physical conditions for moisture detection.

[0047] The buffer silo has a certain volume, and the grain stays in it for a relatively long time, especially during intermittent unloading, where the grain pile can naturally form a relatively static layer. The detection element 210 is located near the feed pipe 150, in the pre-discharge flow zone, and can effectively sense the moisture state of the grain to be transported.

[0048] Alternatively, before each unloading, a certain batch of grain can be allowed to fully enter the buffer silo and remain stationary before starting the feed pipe at 150°C to discharge. Moisture testing during this stationary period is equivalent to representative sampling of the entire batch of grain, resulting in more statistically significant results.

[0049] In this embodiment, intermittent feeding or small-batch release can be achieved by controlling the opening and closing of the feeding pipe 150. For example, when calibration or verification is required, the feeding pipe 150 can be closed first, allowing the grain to remain still in the buffer chamber, and the discharge can be resumed after the test is completed. Alternatively, it can be understood that in this embodiment, multiple detection elements 210 can be installed at different heights or in different areas of the buffer chamber. Combined with the discharge process of the feeding pipe 150, the moisture gradient of different layers of grain can be monitored to identify whether there are problems such as stratification and dampness.

[0050] For example, please continue reading Figure 4 , Figure 5 The feeding pipe 150 is equipped with a switch for opening or closing it. By opening or closing the switch, grain samples can be taken from the buffer silo at any time. When the detector 210 shows abnormal or large fluctuations in moisture content, the operator can immediately close the switch, suspend the discharge, and directly obtain a sample of the current batch of grain from the outlet of the feeding pipe 150 or from within the buffer silo. The sample taken is from the same batch and in the same state as the grain detected by the sensor, exhibiting high consistency and can be used to compare with the sensor readings to verify the accuracy of the detection results.

[0051] This embodiment also provides a grain unloading device, including a grain unloading port and a detection fixture as described in any of the above embodiments, wherein the detection fixture is installed at the grain unloading port.

[0052] The unloading device in this embodiment includes the detection fixture in any of the above embodiments, and thus possesses all the beneficial effects of the detection fixture, which will not be elaborated further here.

[0053] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A detection fixture for detecting moisture content at the grain unloading port, characterized in that, The testing fixture includes: The tooling body (100) has a first opening (120) communicating with the grain storage position, and a second opening (130) communicating with the grain unloading position. A cavity (110) is formed between the first opening (120) and the second opening (130). The detection assembly (200) includes a detection element (210) and a sealing element (220). The detection element (210) is installed inside the tooling body (100), and the detection position of the detection element (210) is set towards the cavity (110) and at least partially extends into the cavity (110). The sealing element (220) is slidably mounted on the tooling body (100) for closing or opening the second opening (130).

2. The testing fixture according to claim 1, characterized in that, The tooling body (100) is configured as a fixed pipe body, which is located at the unloading port along the unloading direction.

3. The testing fixture according to claim 2, characterized in that, A partition plate (230) is inclinedly arranged inside the fixed pipe along the unloading direction. The partition plate (230) and the side wall of the fixed pipe together form an installation cavity (240). The installation cavity (240) and the cavity (110) are not connected to each other. The detection element (210) is installed in the installation cavity (240).

4. The testing fixture according to claim 3, characterized in that, The partition plate (230) has a through hole that connects the mounting cavity (240) and the cavity (110). The detection element (210) is a moisture sensor, and the detection position of the moisture sensor is sealed and installed in the through hole.

5. The testing fixture according to claim 3, characterized in that, The sealing component (220) is a sealing plate. A slot is provided on the tooling body (100) near the second opening (130). The sealing plate can be inserted into the slot in a direction perpendicular to the unloading direction to seal the second opening (130).

6. The testing fixture according to claim 3, characterized in that, The projected area of ​​the first opening (120) along the unloading direction is S1, and the projected area of ​​the second opening (130) along the unloading direction is S2, satisfying: S1 > S2.

7. The testing fixture according to claim 3, characterized in that, The tooling body (100) is provided with a conduit (140), which is installed on the metal mesh at the unloading port; One end of the conduit (140) extends into the mounting cavity (240) for threading the wire harness of the detection component (210).

8. The testing fixture according to claim 1, characterized in that, The tooling body (100) is configured as a buffer chamber, which is installed between the grain storage tank (300) and the conveying pipeline; The first opening (120) is connected to the grain storage tank (300), and a material taking pipe (150) is installed at the second opening (130). The detection element (210) is set on the buffer chamber and is located close to the material taking pipe (150).

9. The testing fixture according to claim 8, characterized in that, The material taking tube (150) is provided with a switch for opening or closing the material taking tube (150).

10. A grain unloading device, characterized in that, It includes a grain unloading port and the detection fixture described in any one of claims 1 to 9, wherein the detection fixture is installed at the grain unloading port.

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