CN108801838B - Grain moisture rapid detection device based on gravity sensor - Google Patents
Grain moisture rapid detection device based on gravity sensor Download PDFInfo
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- CN108801838B CN108801838B CN201810410865.3A CN201810410865A CN108801838B CN 108801838 B CN108801838 B CN 108801838B CN 201810410865 A CN201810410865 A CN 201810410865A CN 108801838 B CN108801838 B CN 108801838B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
- G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
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Abstract
The invention relates to a grain moisture rapid detection device based on a gravity sensor, which is characterized in that a stepping transmission mechanism is controlled by a single chip microcomputer to rotate, so that three stations, namely a feeding station, a detection station and a material removing station, are switched circularly; the material removing station is provided with a cam track and a material removing plate; when the movable glass cover mechanism and the movable material tray mechanism move to the material removing station, the movable glass cover mechanism and the movable material tray mechanism move upwards along the cam track, and the material removing plate scrapes materials on the movable material tray; when the movable glass cover mechanism and the movable material tray mechanism run to the detection station, the heating mechanism is positioned right above the glass material barrel, and the third roller just corresponds to the support frame; the gravity sensor is connected with the single chip microcomputer, and the heating mechanism is connected with the single chip microcomputer. The invention realizes the cyclic switching of three stations of feeding, heating measurement and material removal, can continuously test and work, and meets the requirement of accurate and rapid measurement.
Description
Technical Field
The invention relates to the technical field of grain drying equipment, in particular to a grain moisture rapid detection device based on a gravity sensor.
Background
The detection of grain moisture is an essential important link in the links of acquisition, storage, transportation, processing, trade and the like, and the accurate determination of the grain moisture has a decisive effect on grain quality grading and grain processing. The national standard method for detecting the moisture of the grain is an oven method, the method is accurate in measurement, but consumes time and electricity, is only suitable for professional laboratories when the testing time of each sample is 2-3 hours or even longer, and cannot meet the requirement of rapid detection of moisture on site; the existing online moisture measuring instrument has unsatisfactory actual performance and low accuracy, is easily influenced by environmental factors, grain types and physical parameters, has a measurement data error larger than 5 percent, and is difficult to meet the requirements of grain purchasing and drying links. Therefore, an oven method capable of meeting the requirement of measurement accuracy cannot meet the requirement of rapid detection, and although the oven method can meet the requirement of an online moisture measuring instrument for rapid detection, the oven method cannot meet the requirement of measurement accuracy.
Especially in the northern China, the method has the advantages of large province of commercial grain production, short harvest time of autumn grains such as corn and rice, huge grain yield, heavy drying task and centralized grain acquisition time. The quality grade and the price of the grain can be determined efficiently only by accurately measuring the moisture content of the grain in the purchasing process, and the link is closely related to the vital interests of vast farmers. Therefore, the grain moisture detection link must meet the requirements of accuracy and rapidness. Aiming at the requirement, based on the principle of a drying weight loss method, the device integrates the single-chip microcomputer control, the high-precision weight measuring module and the precise mechanical transmission mechanism to be coupled to complete multi-station ordered motion synthesis, and a grain moisture rapid detection device based on a gravity sensor is developed.
Disclosure of Invention
The invention aims to provide a grain moisture rapid detection device based on a gravity sensor, which is used for solving the contradiction problems that an oven method which can meet the requirement of measurement accuracy in the prior art cannot meet the requirement of rapid detection, and an online moisture measurement instrument which can meet the requirement of rapid detection cannot meet the requirement of measurement accuracy.
The technical scheme adopted by the invention for solving the technical problems is as follows: the grain moisture rapid detection device based on the gravity sensor is characterized in that a stepping transmission mechanism is controlled by a single chip microcomputer to rotate, three stations of a feeding station, a detection station and a material removing station are switched circularly, and test work is continuously performed uninterruptedly; the central rotating shaft of the stepping transmission mechanism is connected with the rotating support, the moving material tray mechanism comprises a material tray push rod, a moving material tray and a third roller, the material tray push rod is fixedly connected with the rotating support, the rotating support is provided with the first roller, the third roller is arranged below the moving material tray, and the material tray push rod pushes the moving material tray to rotate; the movable glass cover mechanism comprises a movable glass support, a glass material barrel is fixed at the upper end of the movable glass support, a second roller is mounted at the lower end of the movable glass support, when the second roller runs to a material removing station, the second roller moves upwards along a cam track to drive the movable glass support and the glass material barrel to rise, the movable material disk passes by adhering to the lower surface of a material removing plate, and the material removing plate scrapes materials on the movable material disk; when the third roller wheel runs to the detection station, the heating mechanism is positioned right above the glass material cylinder, and the third roller wheel just corresponds to the support frame; the gravity sensor is connected with the single chip microcomputer, and the heating mechanism is connected with the single chip microcomputer.
In the scheme, the stepping transmission mechanism is formed by connecting a stepping motor with a small synchronous belt wheel, the small synchronous belt wheel is connected with a large synchronous belt wheel through a synchronous belt, the large belt wheel is fixedly connected with a central rotating shaft, a flange bearing is arranged between the central rotating shaft and a rack, and the stepping transmission mechanism provides power.
The heating mechanism in the scheme is composed of a halogen heating lamp, a temperature sensor and a lamp shade, the halogen lamp and the temperature sensor are fixedly supported by an internal framework of the lamp shade, the halogen heating lamp provides drying heat, and the temperature value is controlled by the temperature sensor in a feedback mode.
According to the scheme, the rotating support is T-shaped, one end of the horizontal portion of the rotating support is fixedly connected with the central fixed shaft, the other end of the horizontal portion of the rotating support is fixedly connected with the rotating connecting rod, the rotating connecting rod is Z-shaped, the lower end of the rotating connecting rod and the upper connecting rod are connected through a bearing, the upper connecting rod is connected with the movable glass support, and the movable glass support is supported through four roller supports and four second rollers below the movable glass support.
According to the scheme, the rotating support is connected with the material tray push rod through the lower connecting rod, the material tray push rod rotates around the central rotating shaft along with the rotating support, and the material tray push rod drives the moving material tray to move.
The invention has the following beneficial effects:
1. the invention controls the movement of a high-precision mechanical mechanism by coupling of a single chip microcomputer, realizes the cyclic switching of three stations of feeding, heating measurement and material removal, calculates the moisture value of the grain in real time by applying a high-precision weighing sensing technology, can continuously test the work uninterruptedly, meets the requirement of accurate and rapid measurement, and saves time, labor and time in the grain moisture detection link due to the adoption of a multi-station rotary cyclic mode. Greatly improves the working efficiency of collecting and storing the commercial grains and reduces the energy waste.
2. Three key working links (feeding, measuring and removing) of the invention are all controlled by the coupling of the single chip microcomputer, the movement mechanism is controlled by accurate logic, and the detection accuracy is improved.
3. The invention has the advantages of simple structure, stable work and simple operation, can meet the requirement of high-precision measurement in grain moisture detection, and greatly saves the measurement time compared with the traditional oven method.
The invention completes the accurate determination of the grain moisture by the combination of high-temperature halogen lamp heating and the gravity sensor. The device improves the accuracy and convenience of grain moisture detection. And simple structure, working property is stable, and the operation is directly perceived succinct, measures accurately, improves work efficiency, reduces the energy waste, reduces staff's intensity of labour by a wide margin.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a cross-sectional view taken in rotation A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion D of FIG. 2;
FIG. 4 is an enlarged view of E in FIG. 2;
FIG. 5 is a schematic diagram of the relationship between the gravity sensor and the support frame according to the present invention;
FIG. 6 is a structural view of a heating mechanism in the present invention;
FIG. 7 is a structural view of a mechanism for moving the cover glass in the present invention;
FIG. 8 is a block diagram of the moving tray mechanism of the present invention;
fig. 9 is a schematic view of the relationship between the cam track and the stripper plate in the present invention.
In the figure: 1 gravity sensor, 2 support frames, 3 halogen heating lamps, 4 temperature sensors, 5 lamp shades, 6 flange bearings, 7 first rollers, 8 central rotating shafts, 9 feeding stations, 10 detection stations, 11 rotating supports, 12 bearings, 13 rotating connecting rods, 14 glass material cylinders, 15 moving glass supports, 16 roller supports, 17 second rollers, 18 lower connecting rods, 19 material removing stations, 20 upper connecting rods, 21 moving material trays, 22 material tray push rods, 23 third rollers, 24 material removing plates, 25 cam tracks, 26 single-chip microcomputers, 27 stepping motors, 28 large synchronous belt wheels, 29 synchronous belts, 30 small synchronous belt wheels, 31 material dropping ports and 32 racks.
Detailed Description
The invention is further described with reference to the accompanying drawings in which:
with reference to fig. 1-9, the grain moisture rapid detection device based on the gravity sensor is characterized in that a stepping transmission mechanism is controlled by a single chip microcomputer to rotate, so that three stations, namely a feeding station 9, a detection station 10 and a material removing station 19, are switched in a circulating manner, and the three stations are continuously tested without interruption, and the three stations, namely the feeding station 9, the detection station 10 and the material removing station 19 are not affected by each other, so that the grain moisture rapid detection device can simultaneously accommodate three samples to automatically test the moisture value of the material in sequence. Pan feeding station 9, detection station 10, remove in material station 19 all locates the frame, detection mechanism sets up heating mechanism, support frame 2, and singlechip 26, gravity sensor 1 constitute, and support frame 2 sets up the lower extreme at frame 32, and gravity sensor 1 installs under support frame 2, removes material station 19 and sets up cam track 25, and cam track 25 inboard is fixed removes flitch 24, removes to set up blanking mouth 31 on the frame 32 under flitch 24. Gravity sensor 1 connects singlechip 26, detects the weight value before the cereal heats back by high accuracy gravity sensor 1 for jointly measure and calculate cereal moisture content with singlechip 26.
The heating mechanism is connected with the singlechip 26, the heating mechanism consists of a halogen heating lamp 3, a temperature sensor 4 and a lampshade 5, the inner framework of the lampshade 5 provides a fixed halogen lamp and a temperature sensor 4 for supporting, the halogen heating lamp 3 provides drying heat, and the temperature sensor 4 controls the heating temperature value in a feedback mode.
The central rotating shaft of the stepping transmission mechanism is connected with the rotating support 11, the moving tray 21 mechanism consists of the rotating support 11, a lower connecting rod 18, a tray push rod 22, a moving tray 21 and a third roller, the rotating support 11 is connected with the tray push rod 22 through the lower connecting rod 18, the tray push rod 22 is fixedly connected with the rotating support 11, the rotating support 11 is provided with the first roller 7, the third roller 23 is arranged below the moving tray 21, the tray push rod 22 rotates around the central rotating shaft 8 along with the rotating support 11, and the tray push rod 22 drives the moving tray 21 to move; when the third roller 23 runs to the detection station, the heating mechanism is positioned right above the glass material barrel 14, and the third roller 23 just corresponds to the support frame 2.
The movable glass cover mechanism comprises a rotating support 11, a bearing 12, a rotating connecting rod 13, an upper connecting rod 20, a movable glass support 15 and a glass material cylinder 14, wherein the upper end of the movable glass support 15 is fixed with the glass material cylinder, the movable glass support 15 is supported by four roller supports 16 and four second rollers 17 below the movable glass support, the rotating support 11 is T-shaped, one end of the horizontal part of the rotating support 11 is fixedly connected with a central fixed shaft 8, the other end of the horizontal part of the rotating support 11 is fixedly connected with the rotating connecting rod 13 through the bearing 12, the rotating connecting rod 13 is Z-shaped, the lower end of the rotating connecting rod 13 is connected with the upper connecting rod 20 through the bearing 12, and the upper connecting rod 20 is connected with the movable glass. When the second roller 17 runs to the material removing station 19, the second roller moves upwards along the cam track 25 to drive the movable glass bracket 15 and the glass material barrel 14 to lift, the movable material tray 21 passes by adhering to the lower surface of the material removing plate, and the material removing plate scrapes materials on the movable material tray 21.
The step-by-step drive mechanism is connected little synchronous pulley 30 by step motor 27, little synchronous pulley 30 passes through hold-in range 29 with big synchronous pulley 28 to be connected, big pulley constitutes with central axis of rotation 8 fixed connection, set up flange bearing 6 between central axis of rotation 8 and the frame, step-by-step drive mechanism provides power for removing charging tray mechanism and removal glass cover mechanism, step motor 27 is the power supply, its operating condition is controlled by singlechip 26, when step motor rotates, its power transmits power to central axis of rotation 8 through little synchronous pulley 30, hold-in range 29, big synchronous pulley 28, central axis of rotation 8 passes through bolt fixed connection with rotating support 11. The glass cover moving mechanism and the material tray moving mechanism move synchronously.
In the feeding section, a first roller 7, a second roller 17 and a third roller 23 are respectively contacted with the inner surface of the frame to support the movable support rod, the movable glass support 15 and the movable material tray 21;
in the measuring section, the first roller 7 and the third roller 23 are in contact with the inner surface of the bracket to support the movable bracket rod and the movable glass bracket 15, the third roller 23 is in contact with the support frame 2 to transmit the force borne by the third roller 23 to the sensor, and the weight value of the grains is measured;
in the material removing section, the material removing plate 24 is fixed on the cam track 25, the first roller 7 and the third roller 23 are in contact with the inner surface of the support to support the rotating support 11 and the moving tray 21, the second roller 17 is in contact with the cam track 25 to enable the moving glass support 15 to ascend along the cam track 25, at the moment, the moving tray 21 is separated from the moving glass support 15, the material removing plate 24 is arranged between the two, and materials on the material using tray are removed.
The heat required by the rapid water loss of the material is provided by the halogen heating lamp 3, the heating temperature is controlled by the temperature sensor 4 in real time, and the power of the heating lamp is controlled after the detection signal is processed by the singlechip 26 so that the heating temperature is controlled within a set range; the lampshade 5 is fixed on the frame 32; a gravity sensor 1 used for detecting the weight of the moving tray mechanism is arranged below the lampshade 5, and the weight is transmitted to the gravity sensor 1 through a support frame 2 connected to the gravity sensor 1.
The detection principle of the invention is as follows:
the specific working process of the invention is as follows:
the starting position is a feeding position, the moving tray mechanism and the moving glass cover mechanism are located at the same corner position at the moment, the second roller 17 and the third roller 23 are in contact with the rack 32, the material sample is quantitatively poured from the upper part of the moving glass cover mechanism and falls to the moving tray 21 to complete feeding, and the feeding function is completed.
The stepping transmission mechanism starts to move under the control of the singlechip 26, and drives the moving tray 21 mechanism and the moving glass cover mechanism to rotate around the central rotating shaft 8 together in the rotating process; when the third roller 23 of the moving tray mechanism contacts with the support frame 2 of the detection mechanism, the weight of the moving tray 21 and the material is supported by the support frame 2, at this time, the gravity sensor 1 detects the change of force, and the singlechip 26 outputs a signal to stop the stepping motor 27; the temperature sensor 4 in the detection mechanism continuously detects the temperature value, and the single chip microcomputer 26 enables the materials to be dried at the set temperature through the feedback of the temperature sensor 4; the gravity sensor 1 continuously detects the weight change of the material sample, and when the weight is not changed, the single chip microcomputer 26 calculates the water content of the material sample according to the change of the weight of the sample, so that the detection function is completed.
After the detection is finished, the single chip microcomputer 26 outputs a signal again to enable the stepping motor 27 to rotate, and the movable glass cover mechanism and the movable material tray mechanism rotate around the central rotating shaft 8 again under the driving of the power mechanism. Along with the rotation of the glass cover moving mechanism and the tray moving mechanism, the glass cover moving mechanism gradually rises along the cam track 25, and the tray moving mechanism continues to do plane rotation movement. The distance between the two is gradually increased under the drive of the cam track 25 and kept for a period of time, in the period of time, the material removing plate 24 is positioned between the movable tray 21 and the movable glass cover, the material removing plate 24 is contacted with the movable tray 21, and along with the movement of the movable tray, the material sample on the material removing plate is removed by the material removing plate 24 and is discharged through the blanking port. After the material removing is finished, the movable glass cover mechanism gradually descends along the cam track 25 to be in contact with the rack 32, and finally is located on the same horizontal plane with the movable material tray 21 mechanism, so that the material removing function is finished, and a work flow is finished.
Claims (5)
1. The utility model provides a grain moisture short-term test device based on gravity sensor which characterized in that: the rapid grain moisture detection device based on the gravity sensor (1) is characterized in that a stepping transmission mechanism is controlled by a single chip microcomputer (26) to rotate, three stations, namely a feeding station (9), a detection station (10) and a material removing station (19), are switched in a circulating manner, test work is continuously performed, the feeding station (9), the detection station (10) and the material removing station (19) are all arranged in a rack (32), the detection station is provided with a heating mechanism and a support frame (2), the support frame (2) is arranged at the lower end of the rack (32), the gravity sensor (1) is arranged below the support frame (2), the material removing station (19) is provided with a cam track (25), a material removing plate (24) is fixed on the inner side of the cam track (25), and a material falling port (31) is arranged on the rack (32) right below the material removing plate (24; a central rotating shaft (8) of the stepping transmission mechanism is connected with a rotating support (11), the moving tray mechanism comprises a tray push rod (22), a moving tray (21) and a third roller (23), the tray push rod (22) is fixedly connected with the rotating support (11), the rotating support (11) is provided with the first roller (7), the third roller (23) is arranged below the moving tray (21), and the tray push rod (22) pushes the moving tray (21) to rotate; the movable glass cover mechanism comprises a movable glass support (15), a glass material barrel (14) is fixed at the upper end of the movable glass support (15), a second roller (17) is installed at the lower end of the movable glass support (15), when the second roller (17) runs to a material removing station (19), the second roller moves upwards along a cam track (25) to drive the movable glass support (15) and the glass material barrel (14) to rise, a movable material tray (21) passes by adhering to the lower surface of a material removing plate (24), and the material on the movable material tray (21) is scraped by the material removing plate (24); when the third roller (23) runs to the detection station, the heating mechanism is positioned right above the glass material cylinder (14), and the third roller (23) just corresponds to the support frame (2); the gravity sensor (1) is connected with the single chip microcomputer, and the heating mechanism is connected with the single chip microcomputer (26).
2. The gravity sensor-based grain moisture rapid detection device according to claim 1, wherein: the stepping transmission mechanism is characterized in that a small synchronous belt wheel (30) is connected with a stepping motor (27), the small synchronous belt wheel (30) is connected with a large synchronous belt wheel (28) through a synchronous belt (29), the large belt wheel is fixedly connected with a central rotating shaft (8), a flange bearing (6) is arranged between the central rotating shaft (8) and a rack (32), and the stepping transmission mechanism provides power.
3. The gravity sensor-based grain moisture rapid detection device according to claim 2, wherein: the heating mechanism comprises a halogen heating lamp (3), a temperature sensor (4) and a lamp shade (5), the inner framework of the lamp shade (5) provides a fixed halogen lamp and the temperature sensor (4) for supporting, the halogen heating lamp (3) provides drying heat, and the temperature sensor (4) controls the heating temperature value in a feedback mode.
4. The gravity sensor-based grain moisture rapid detection device according to claim 3, wherein: rotating support (11) be the T type, rotating support (11) horizontal part one end and central axis of rotation (8) fixed connection, rotating support (11) horizontal part other end and swivelling joint pole (13) fixed connection, swivelling joint pole (13) are the Z type, swivelling joint pole (13) lower extreme and last connecting rod (20) are connected through bearing (12), go up connecting rod (20) and be connected with removal glass support (15), remove glass support (15) and support through four gyro wheel supports and four second gyro wheels (17) below it.
5. The gravity sensor-based grain moisture rapid detection device according to claim 3, wherein: the rotating bracket (11) is connected with a material tray push rod (22) through a lower connecting rod (18).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410865.3A CN108801838B (en) | 2018-05-02 | 2018-05-02 | Grain moisture rapid detection device based on gravity sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410865.3A CN108801838B (en) | 2018-05-02 | 2018-05-02 | Grain moisture rapid detection device based on gravity sensor |
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| CN108801838A CN108801838A (en) | 2018-11-13 |
| CN108801838B true CN108801838B (en) | 2020-12-22 |
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| CN110568136B (en) * | 2019-10-08 | 2023-10-24 | 安徽大洋自动化科技有限公司 | Method and instrument for rapidly measuring grain moisture by buoyancy method |
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| CN2283256Y (en) * | 1996-11-13 | 1998-06-03 | 黑龙江省农业机械工程科学研究院 | Grain moisture content multi-point on line detector |
| CN2312434Y (en) * | 1997-11-04 | 1999-03-31 | 黑龙江省农业机械工程科学研究院 | Cup like sensing device assembly for grain moisture on-line detection |
| CN2339979Y (en) * | 1998-03-31 | 1999-09-22 | 芦殿林 | Electronic automatic balance with water-content detection device |
| CN2358450Y (en) * | 1998-03-31 | 2000-01-12 | 刘质彬 | Intelligent water content analyzer by drying method |
| CN206020210U (en) * | 2016-07-11 | 2017-03-15 | 泰州市维科特仪器仪表有限公司 | A kind of halogen fast tester for water content |
| CN107703160A (en) * | 2017-09-06 | 2018-02-16 | 上海交通大学 | Combine grain moisture content and unit weight on-line measuring device |
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2018
- 2018-05-02 CN CN201810410865.3A patent/CN108801838B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283256Y (en) * | 1996-11-13 | 1998-06-03 | 黑龙江省农业机械工程科学研究院 | Grain moisture content multi-point on line detector |
| CN2312434Y (en) * | 1997-11-04 | 1999-03-31 | 黑龙江省农业机械工程科学研究院 | Cup like sensing device assembly for grain moisture on-line detection |
| CN2339979Y (en) * | 1998-03-31 | 1999-09-22 | 芦殿林 | Electronic automatic balance with water-content detection device |
| CN2358450Y (en) * | 1998-03-31 | 2000-01-12 | 刘质彬 | Intelligent water content analyzer by drying method |
| CN206020210U (en) * | 2016-07-11 | 2017-03-15 | 泰州市维科特仪器仪表有限公司 | A kind of halogen fast tester for water content |
| CN107703160A (en) * | 2017-09-06 | 2018-02-16 | 上海交通大学 | Combine grain moisture content and unit weight on-line measuring device |
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