Grain moisture content on-line measurement test bench

Abstract

The utility model discloses a grain moisture content on-line measurement test bed which can calibrate a moisture content sensor in real time and solves the problem that a traditional static sensor cannot adapt to real-time testing of flowing grains. The technical scheme comprises a middle-section measuring bin; the middle-section measuring bin is fixedly mounted on the measuring platform, a material channel is arranged at the core part of the middle-section measuring bin, and an upper-section stock bin is arranged above the middle-section measuring bin; a comprehensive sensor is arranged on the middle-section measuring bin, a flow speed adjusting device is arranged on the lower half portion of the middle-section measuring bin, the flow speed adjusting device comprises a grain poking wheel, the grain poking wheel is arranged in the material channel, a driving shaft is arranged in the grain poking wheel, and a variable frequency motor is arranged at one end of the driving shaft; a control cabinet is arranged on one side of the test bed, a touch screen is arranged on the control cabinet, the flow rate automatic adjusting device and the comprehensive sensor are both in communication with the touch screen, and a data acquisition and calibration system is installed in the touch screen.

Description

Technical Field

[0001] The utility model belongs to the technical field of moisture content sensor testing, and in particular relates to an online measurement test bench for grain moisture content. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] With the development of agricultural production and related industries such as grain processing, the demand for accurate measurement of grain moisture content is increasing. During grain processing, moisture content data is crucial for determining grain quality, storage conditions, and processing adjustments. Moisture sensors are key components for collecting moisture content data. Therefore, the accuracy of moisture sensors under different operating conditions is crucial for grain storage. Traditional moisture sensor accuracy testing suffers from the inability to measure and calibrate in real time. Utility Model Content

[0004] In response to the above problems, the utility model provides an online grain moisture content measurement test bench, which can test the accuracy of the moisture content sensor for different grain flow rates, compare the collected data with the actual data, and perform real-time calibration of the moisture content sensor, solving the problem that traditional static sensors cannot adapt to real-time testing of flowing grains.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The present invention provides an online measurement test bench for grain moisture content, comprising an upper silo, a middle measurement silo, a lower feed port and a measurement platform;

[0007] The middle section measuring bin is fixedly mounted on the measuring platform, the core of the middle section measuring bin is provided with a material channel, the lower surface of the measuring platform is fixedly provided with a drop opening, a square opening is provided on the measuring platform between the middle section measuring bin and the drop opening, and an upper material bin is provided above the middle section measuring bin; a first window and a second window are provided on the upper portion of the middle section measuring bin, a comprehensive sensor is provided on the first window, the comprehensive sensor includes a moisture content sensor and a temperature sensor, and a leakage valve is provided on the second window; a flow rate regulating device is provided on the lower half of the middle section measuring bin, the automatic flow rate regulating device includes a grain paddle, a drive shaft and a frequency conversion motor, the grain paddle is provided at the core of the middle section measuring bin, the grain paddle is mounted on the drive shaft, both ends of the drive shaft are mounted on the middle section measuring bin through bearing seats, and one end of the drive shaft is connected to the frequency conversion motor;

[0008] The test bench is provided with a control cabinet on one side, a touch screen is arranged on the control cabinet, the flow rate automatic adjusting device and the comprehensive sensor are in communication with the touch screen, and a data acquisition and calibration system of the comprehensive sensor is installed on the touch screen.

[0009] Further, the upper bin is similar to a quadrangular frustum structure and is provided with an upper port and a lower port, the upper port is used for feeding, and the lower port is connected with the top of the material channel of the middle measuring bin.

[0010] Further, one side of the upper bin is provided with an observation window, and the observation window is closed by an acrylic plate.

[0011] Further, the side plates of the middle measuring bin are respectively a first side plate, a second side plate, a third side plate and a fourth side plate, the first side plate and the second side plate are oppositely arranged, the third side plate and the fourth side plate are oppositely arranged, and adjacent side plates are fixedly connected.

[0012] Further, the flow rate automatic adjusting device comprises a grain poking wheel, a driving shaft and a variable frequency motor, the grain poking wheel is arranged in the core of the middle measuring bin, the grain poking wheel is installed on the driving shaft, and bearing seats are arranged at two ends of the driving shaft.

[0013] Further, the bearing seats are arranged on the side plates of the middle measuring bin, one of the bearing seats is arranged on the first side plate and the second window, and the other bearing seat is arranged on the second side plate.

[0014] Further, the first window is arranged on the third side plate, a material baffle is arranged on the fourth side plate, the upper end of the material baffle is fixedly connected with the fourth side plate, the material baffle and the fourth side plate are at a certain angle, and the lower end of the material baffle is in contact with the grain poking wheel.

[0015] Further, a shaft coupling is arranged between the variable frequency motor and the driving shaft, a speed reducer is further arranged in the variable frequency motor, a mounting bracket is arranged below the variable frequency motor, and the mounting bracket is detachably connected with the measuring platform.

[0016] Further, a starting knob and a stopping knob are further arranged on the control cabinet.

[0017] Further, supporting legs are further arranged below the test bench, the supporting legs are four in number and are arranged at four corners of the test bench, and foma wheels are arranged at the lower ends of the supporting legs.

[0018] Compared with the prior art, the test bench has the advantages and positive effects that:

[0019] The test bench of the utility model consists of an upper silo, a middle measuring silo, a drop port, and a measuring platform. The middle measuring silo is located on the measuring platform and has a material channel at its core. The middle measuring silo is provided with a first window and a second window. The first window is equipped with a comprehensive sensor for detecting the moisture content and temperature of the grain. The second window is provided with a leakage valve. The side panels of the middle measuring silo are equipped with bearing seats to support the drive shaft. The material baffle on the fourth side panel cooperates with the grain dial wheel to prevent the material from freely falling, ensuring orderly and controllable material flow. The touch screen communicates with the automatic flow rate adjustment device and the comprehensive sensor, can display grain information and adjust the motor speed, and can finely adjust the material flow rate in the middle measuring silo through the touch screen. The moisture content and temperature data of the grain are collected and compared with the actual moisture content and temperature data of the grain in real time. The moisture content sensor's data acquisition and calibration system corrects the error of the moisture content sensor, avoiding the problem of inaccurate moisture content and temperature measurement of flowing grain.

[0020] The upper hopper of this utility model is a quadrangular platform structure with a large upper port for easy material feeding. The lower port is connected to the top of the material channel in the middle measuring hopper, ensuring smooth gravity conveyance and minimizing residue and blockage. An acrylic viewing window on the side allows the operator to visually inspect the material storage status. A mounting bracket below the motor is bolted to the measuring platform, and an external motor cover provides protection and sound insulation. A touchscreen, start knob, and stop knob are located on one side of the test bench. Support legs at the four corners and a Foma wheel at the lower end facilitate movement and placement, enhancing flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Fig. 1 This is the structure diagram of the grain moisture content online measurement test bench of this utility model

[0023] Fig. 2 This is a cross-sectional view of the components of the test bench of the utility model

[0024] Fig. 3 This is a component structure diagram of the test bench of the utility model

[0025] In the figure: 1. Upper silo; 2. Middle measuring silo; 3. Dropping port; 4. Measuring platform; 5. Control cabinet; 6. Touch screen; 7. Support legs; 8. Start knob; 9. Stop knob; 10. Grain wheel; 11. Frequency conversion motor; 12. Material baffle; 13. Speed ​​reduction device; 14. Drive shaft; 15. Leakage valve; 16. Integrated sensor; 17. Motor protection cover; 18. Observation window. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0027] The utility model is described in detail below with reference to the accompanying drawings. The embodiment discloses an online measurement test bench for moisture content of grains. Figs. 1-3 As shown, it includes an upper silo 1, a middle measuring silo 2, a lower drop port 3 and a measuring platform 4; the middle measuring silo 2 is fixedly mounted on the measuring platform 4, the core of the middle measuring silo 2 is provided with a material channel, the lower surface of the measuring platform 4 is fixedly provided with a lower drop port 3, a square port is provided on the measuring platform 4 between the middle measuring silo 2 and the lower drop port 3, and the upper silo 1 is provided above the middle measuring silo 2; a first window and a second window are provided on the middle measuring silo 2, the first window is provided with a comprehensive sensor 16, the comprehensive sensor 16 includes a moisture content sensor and a temperature sensor, and the second window is provided with a leakage valve 15; the middle measuring silo 2 is provided with a first window and a second window, the first window is provided with a comprehensive sensor 16, the comprehensive sensor 16 includes a moisture content sensor and a temperature sensor, and the second window is provided with a leakage valve 15; A flow rate regulating device is provided in the lower half of the measuring bin 2, and the automatic flow rate regulating device includes a grain dial 10, a drive shaft 14 and a frequency conversion motor 11. The grain dial 10 is arranged at the core of the middle measuring bin 2, and the grain dial 10 is installed on the drive shaft 14. Both ends of the drive shaft 14 are installed on the middle measuring bin 2 through bearing seats, and one end of the drive shaft 14 is connected to the frequency conversion motor 11; a control cabinet 5 is provided on one side of the test bench, and a touch screen 6 is provided on the control cabinet 5. The automatic flow rate regulating device and the integrated sensor 16 both establish communication with the touch screen 6, and the touch screen 6 is equipped with a data acquisition and calibration system of the integrated sensor.

[0028] The upper silo 1 is arranged above the middle measuring silo 2. The upper silo 1 is similar to a quadrangular pyramid structure and is provided with an upper port and a lower port, which is conducive to the smooth downward transportation of materials from the upper silo 1 to the middle measuring silo 2. The upper port has a large area and is convenient for feeding. It can ensure that the materials can be better gathered and flow into the next level channel under the action of gravity, reducing the possibility of material residue and blockage. The lower port is connected to the top of the material channel of the middle measuring silo 2. An observation window 18 is provided on one of the sides of the upper silo 1. The observation window 18 is closed with an acrylic plate. The acrylic plate has high transparency and is sturdy and durable. The operator can visually view the storage situation of the material in the silo through the observation window 18, such as the height of the material, whether there is abnormal accumulation, etc., without opening the silo for inspection. It is convenient and fast and can detect problems in time.

[0029] The side panels of the middle section measuring bin 2 are respectively composed of a first side panel, a second side panel, a third side panel and a fourth side panel, the first side panel is arranged opposite to the second side panel, the third side panel and the fourth side panel are arranged opposite to each other, and the adjacent side panels are fixedly connected; the flow rate regulating device is arranged at the lower half of the middle section measuring bin 2, and the automatic flow rate regulating device includes a grain paddle 10, a drive shaft 14 and a frequency conversion motor 11, the grain paddle 10 is arranged at the core of the middle section measuring bin 2, the grain paddle 10 is mounted on the drive shaft 14, and bearing seats are respectively provided at both ends of the drive shaft 14, and the bearing seats are respectively provided at the middle section measuring bin 2, On the side panels of the measuring bin 2, one of the bearing seats and the second window is arranged on the first side panel, and the other bearing seat is arranged on the second side panel; the first window is arranged on the third side panel; a material baffle 12 is arranged on the fourth side panel, the upper end of the material baffle 12 is fixedly connected to the fourth side panel, and there is a certain angle between the material baffle 12 and the fourth side panel. The lower end of the material baffle 12 is in contact with the grain paddle 10, which can prevent the material from naturally falling in the material channel of the middle measuring bin 2, ensuring that the material can only enter the lower material port through the rotation of the grain paddle 10. This design can avoid problems such as unstable flow and excessive impact caused by the free fall of the material, making the flow of the material more orderly and controllable, and thus allowing the material to enter the lower material port only through the rotation of the grain paddle 10.

[0030] One end of the drive shaft 14 is connected to the variable frequency motor 11, which drives the grain paddle wheel 10 to rotate. Since the variable frequency motor 11 can achieve different rotational speeds, the rotational speed of the grain paddle wheel 10 can be flexibly changed, thereby effectively adjusting the flow rate of the material in the middle measuring chamber 2. A coupling is provided between the variable frequency motor 11 and the drive shaft 14. The variable frequency motor 11 is also provided with a reduction gear 13. A mounting bracket is provided below the variable frequency motor 11. The mounting bracket is detachably connected to the measuring platform 4. In this embodiment, a bolt connection is selected. A motor protection cover 17 is provided on the outside of the variable frequency motor 11 to protect the variable frequency motor 11 and isolate the noise generated by the variable frequency motor 11.

[0031] The control cabinet 5 is arranged on one side of the test bench. The control cabinet 5 is provided with a touch screen 6, a start knob 8 and a stop knob 9. The automatic flow rate adjustment device and the integrated sensor 16 both establish communication with the touch screen 6. The touch screen 6 can display the type of grain, the moisture content of the grain and the temperature of the grain. The touch screen 6 can also adjust the speed of the variable frequency motor 11, thereby effectively adjusting the flow rate of the grain in the middle measuring bin 2. The touch screen 6 is equipped with a data acquisition and calibration system for the moisture content sensor. The flow rate of the material in the middle measuring bin 2 is finely adjusted through the touch screen 6, and the moisture content data and temperature data of the grain are collected and compared with the actual moisture content and temperature data of the grain in real time. The error of the moisture content sensor is corrected through the data acquisition and calibration system of the moisture content sensor, thereby avoiding the problem of inaccurate measurement of the moisture content and temperature of the flowing grain.

[0032] Support legs 7 are also provided under the test bench. There are four support legs 7, which are respectively arranged at the four corners of the test bench. The lower ends of the support legs 7 are provided with Forma wheels to facilitate the movement and fixed placement of the test bench.

[0033] Working principle:

[0034] The material enters from the upper port of the upper silo 1, and under the action of gravity, the material converges and flows into the middle measuring silo 2; the operator can check the material storage status through the acrylic plate observation window 18 on the side of the upper silo 1. In the middle measuring bin 2, the integrated sensor 16 detects the moisture content and temperature of the grain through the first window; the variable frequency motor 11 drives the grain dial 10 to rotate through the coupling and the drive shaft 14, and its speed can be adjusted through the touch screen 6 of the control cabinet 5. Since the motor has a reduction device 13, the speed can be more finely controlled, thereby effectively adjusting the flow speed of the material in the middle measuring bin 2; the material baffle 12 of the fourth side panel cooperates with the grain dial 10, so that the material can only enter the lower material port through the rotation of the grain dial 10, ensuring that the material flow is orderly and stable; the data detected by the integrated sensor 16 and the information of the automatic flow rate adjustment device are transmitted to the touch screen 6 of the control cabinet 5, and the moisture content data and temperature data of the grain are collected and compared with the actual moisture content and temperature data of the grain in real time. The error of the moisture content sensor is corrected by the data acquisition and calibration system of the moisture content sensor, thereby avoiding the problem of inaccurate moisture content and temperature measurement of flowing grain.

[0035] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A grain moisture content online measurement test bench, characterized in that: It includes upper silo, middle measuring silo, lower material outlet and measuring platform; The middle-section measuring bin is fixedly mounted on the measuring platform, the core of the middle-section measuring bin is provided with a material channel, the lower surface of the measuring platform is fixedly provided with a drop-down port, a square port is provided on the measuring platform between the middle-section measuring bin and the drop-down port, an upper hopper is provided above the middle-section measuring bin; a first window and a second window are provided on the upper portion of the middle-section measuring bin, a comprehensive sensor is provided on the first window, the comprehensive sensor includes a moisture content sensor and a temperature sensor, and a leakage valve is provided on the second window; a flow rate regulating device is provided on the lower half of the middle-section measuring bin, the flow rate regulating device includes a grain paddle, a drive shaft and a frequency conversion motor, the grain paddle is provided at the core of the middle-section measuring bin, the grain paddle is mounted on the drive shaft, both ends of the drive shaft are mounted on the middle-section measuring bin through bearing seats, and one end of the drive shaft is connected to the frequency conversion motor; A control cabinet is provided on one side of the test bench. A touch screen is provided on the control cabinet. The flow rate regulating device and the integrated sensor both establish communication with the touch screen. A data acquisition and calibration system of the integrated sensor is installed on the touch screen.

2. The grain moisture content online measurement test bench according to claim 1, characterized in that: The upper silo is similar to a quadrangular pyramid structure and is provided with an upper port and a lower port. The upper port is used for feeding, and the lower port is connected to the top of the material channel of the middle measuring silo.

3. The grain moisture content online measurement test bench according to claim 1, characterized in that: An observation window is provided on one side of the upper silo, and the observation window is closed with an acrylic plate.

4. The grain moisture content online measurement test bench according to claim 1, characterized in that: The side panels of the middle section measuring chamber are respectively composed of a first side panel, a second side panel, a third side panel and a fourth side panel. The first side panel is arranged opposite to the second side panel, the third side panel is arranged opposite to the fourth side panel, and adjacent side panels are fixedly connected.

5. The grain moisture content online measurement test bench according to claim 4, characterized in that: The bearing seats are respectively arranged on the side panels of the middle measuring chamber, one of the bearing seats and the second window is arranged on the first side panel, and the other bearing seat is arranged on the second side panel.

6. The grain moisture content online measurement test bench according to claim 4, characterized in that: The first window is arranged on the third side panel; a material baffle is arranged on the fourth side panel, the upper end of the material baffle is fixedly connected to the fourth side panel, there is a certain angle between the material baffle and the fourth side panel, and the lower end of the material baffle is in contact with the grain wheel.

7. The grain moisture content online measurement test bench according to claim 6, characterized in that: A coupling is provided between the variable frequency motor and the drive shaft, a speed reduction device is further provided in the variable frequency motor, a mounting bracket is provided below the variable frequency motor, and the mounting bracket is detachably connected to the measuring platform.

8. The grain moisture content online measurement test bench according to claim 1, characterized in that: The control cabinet is also provided with a start knob and a stop knob.

9. The grain moisture content online measurement test bench according to claim 1, characterized in that: Support legs are also provided under the test bench. There are four support legs, which are respectively arranged at the four corners of the test bench. The lower ends of the support legs are provided with Forma wheels.

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