CN103808394B - A kind of check weighing structure and the crop dryer comprising this structure of crop dryer - Google Patents
A kind of check weighing structure and the crop dryer comprising this structure of crop dryer Download PDFInfo
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- CN103808394B CN103808394B CN201410052997.5A CN201410052997A CN103808394B CN 103808394 B CN103808394 B CN 103808394B CN 201410052997 A CN201410052997 A CN 201410052997A CN 103808394 B CN103808394 B CN 103808394B
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- Prior art keywords
- seat
- distortion
- extending
- extend
- dryer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
- F26B25/225—Controlling the drying process in dependence on liquid content of solid materials or objects by repeated or continuous weighing of the material or a sample thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
- F26B9/063—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers for drying granular material in bulk, e.g. grain bins or silos with false floor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/24—Guides or linkages for ensuring parallel motion of the weigh-pans
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/14—Devices for determining tare weight or for cancelling out the tare by zeroising, e.g. mechanically operated
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- G—PHYSICS
- 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
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
- G01N5/025—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content for determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
- G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
- G01G3/1404—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports combined with means to connect the strain gauges on electrical bridges
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A kind of check weighing structure and the crop dryer comprising this structure of crop dryer, comprise extend seat and lower distortion of distortion to extend seat, bar upper end longitudinal length of extending is adjustable to be fixed on distortion and to extend on seat, pressure transducer is fixed on lower distortion and extends on seat, and bar lower end of extending is fixed on pressure transducer by fine tuning screw; Be fixed on the pillar of dryer; There is installation, maintenance and change the advantages such as convenient, being applicable to continous way and circulating drying machine.
Description
Technical field
The present invention relates to a kind of device measuring weight, in particular to a kind of structure and the crop dryer comprising this structure of check weighing of crop dryer.
Background technology
In Grain Drying Process, the accurate control of on-line checkingi to dry run of moisture is most important.Mostly existing grain drying moisture on-line investigating method is that adopting capacitance method or electric-resistivity method to realize moisture on-line detects, and the shortcoming that existence and stability is poor, precision is low, can not meet the water content detection demand under complex working condition very well.Chinese Patent Application No. 200920102075.5 discloses the moisture on-line monitoring device of a kind of fruits and vegetables in freezing dry process, this device adopts doubly-linked hole cantilever type weighing sensor as detecting element, to dried material on-line period weighing measurement, the absolute value of material remnant measurement of water ratio error is can be controlled within 0.5%.Chinese invention patent publication number CN101736565A discloses the control method of a kind of cloth drying machine with Weight detecting device and the dryer utilizing this device.The automatic control system that Chinese invention patent publication number CN103438693A discloses a kind of gas jet dryer adopts LOAD CELLS to carry out moisture observing and controlling.All will weigh as the means detecting moisture in above patent, but LOAD CELLS is all installed on drying equipment inside in affiliated patent, the bottom of material tray or dryness storehouse, is unfavorable for later maintenance and dismounting, and the moisture on-line of inapplicable especially grain drying detects.
Use Weighing method as the method for water content detection and the application controlling drying equipment aspect in the above patent, can the accurate and visual water percentage to dried material and percentage of water loss process on-line monitoring and control.Also can apply the detection and control of the method for grain moisture content in dry run as grain drying, but the installation and maintenance of LOAD CELLS becomes a key issue of the method application.
Applicant is for Cirulation type grain dryer, apply for the patented claim of Chinese application number 201310682597.8, propose the moisture on-line investigating method based on total re-detection and system, achieve the effect with beyond tradition circulation dryer investigating method performance in the application.But in the invention, directly adopt traditional LOAD CELLS to be arranged on the moisture on-line pick-up unit of base as weight of dryer, still exist and install and keep in repair inconvenient shortcoming.
Summary of the invention
The invention provides a kind of easy for installation, moisture on-line pick-up unit of being convenient to the high and reliable and stable applicable dryer of later maintenance, precision, be not only applicable to circulation grain drier, be also suitable for continuous crop dryer.
A check weighing structure for crop dryer, comprises extend seat and lower distortion of distortion and to extend seat, and bar of extending is adjustable to be fixed on distortion and to extend on seat, and the adjustable in length of distortion amplification seat is stretched out in bar upper end of extending; Pressure transducer is fixed on lower distortion and extends on seat, and bar lower end of extending is fixed on pressure transducer by fine tuning screw is adjustable.
As further preferably, also comprise protective cover, described protective cover is fixedly connected with extend seat and lower distortion of distortion and extends seat, or described protective cover is fixed on the column of dryer base; For sealing and dustproof.Lower distortion seat of extending arranges protection screw, at vertical direction, has gap between described protection screw and pressure transducer.
As further preferably, bar upper end of extending has screw thread and to extend seat through upper distortion, to extend bar respectively in the extend both sides of seat of upper distortion with nut lock.
As further preferably, described fine tuning screw is annular knurl flat head screw, and it is adjustable is threaded in the threaded hole of pressure transducer.
A kind of crop dryer, comprises the check weighing structure of crop dryer described above, it is characterized in that: described check weighing structure is fixed on the pillar of dryer base.
As further preferred, described pillar is steel cylindrical tube.
As further preferred, described pillar is channel-section steel or joist steel.
As further preferably, upper distortion seat and lower distortion seat of extending of extending clamps described steel cylindrical tube by double card sliding seat.
As further preferably, upper distortion seat and lower distortion seat of extending of extending is fixed on channel-section steel or joist steel by the mode of welding.
Adopt the structure of measurement weight of the crop dryer of the application, there is installation, maintenance and change the advantages such as convenient, being applicable to continous way and circulating drying machine, have that maintenance cost is low, good fixing effect feature.
Accompanying drawing explanation
Fig. 1 is the structural representation of continuous drier of the present invention.
Fig. 2 is one of round steel pipe pillar of the present invention distortion stretched out structure schematic diagram.
Fig. 3 is round steel pipe pillar of the present invention distortion stretched out structure schematic diagram two.
Fig. 4 is pressure transducer partial enlarged view of the present invention.
Fig. 5 is one of channel strut of the present invention distortion stretched out structure schematic diagram.
Fig. 6 is channel strut of the present invention distortion stretched out structure schematic diagram two.
Fig. 7 is one of joist steel pillar of the present invention distortion stretched out structure schematic diagram.
Fig. 8 is joist steel pillar of the present invention distortion stretched out structure schematic diagram two.
Fig. 9 is dryer electrical block diagram of the present invention.
Figure 10 is circulating drying machine scheme of installation of the present invention.
Embodiment
Embodiment one:
See Fig. 1 and Figure 10, the present invention adopts a kind of distortion stretched out structure, be installed on the support post of continuous drying machine base, when loading grain in dryer I, the column effect of being stressed produces axial deformation, described distortion stretched out structure also produces the deformation of trace with the distortion of column, so just the distortion of column be converted in weighing and sensing apparatus II to be out of shape pressure in mechanism of extending bar of extending and to be applied to the distortion of pressure transducer.Pressure transducer 6 by signal test and conversion unit III, deflection is converted to electric signal, and through amplify and conversion after send to control with display unit IV.Level detector V adopts continous way level sensor to detect cereal height in dryer in real time, and data are sent to control with display unit IV calculate grain measure in dryer.The installation form of described distortion stretched out structure can be divided into different installation sides according to dryer pedestal column form
Formula.As shown in Figures 2 and 3, when dryer pedestal column adopts round steel pipe, upper and lower distortion
Seat of extending adopts double card sliding seat type of attachment; Extend namely seat and under to extend the inside one side of seat
Have groove, the excircle of groove and round steel pipe coincide, by screw rod 2 and fastening nuts.As figure
Shown in 5 and Fig. 6, when dryer pedestal column adopts channel-section steel structure, upper and lower distortion seat of extending is adopted
A type of attachment is welded and fixed with two; As shown in Figure 7 and Figure 8, when the pillar of dryer base adopts
During i-beam structure, upper and lower distortion seat of extending also adopts and two is welded and fixed a type of attachment.
Described dryer weighing and sensing apparatus II comprises some cover LOAD CELLS, is installed in dryer main body I pedestal column.As shown in Figure 1.Preferred as one, the distortion stretched out structure composition of LOAD CELLS group 4 of principle, structure, size, material, range and precision can be adopted all identical or more.Described distortion stretched out structure comprises extend seat 3, lower distortion of distortion and to extend seat 7, bar 4 of extending, pressure transducer 6, protection screw 8, fine tuning screw 9 and protective cover 5.Wherein, the extend effect of seat 3 of described upper distortion is mainly fixedly extended bar 4, and the extend Main Function of seat 7 of described lower distortion is fixation pressure sensors 6.Extend seat 3 and lower distortion of upper distortion extends that seat 7 adopts double card sliding seat, screw rod, the mode of welding or holder is fixed on the pillar 1 of dryer base.Described bar 4 of extending adopts threaded rod, and upper end is fixed on upper distortion by double nut and extends seat 3, and adjustment threaded rod stretches out distortion and to extend the length of seat 3, can realize up-down adjustment and locking.Described pressure transducer 6 is fixed on lower distortion by screw extends seat 7, the cantilever of pressure transducer 6 has threaded hole, pressure transducer 6 point of application place is provided with fine tuning screw 9, fine tuning screw 9 adopts annular knurl flat head screw, be installed in pressure transducer 6 point of application place threaded hole, regulate fine tuning screw 9 by rotating, making fine tuning screw 9 extend outside threaded hole or shorten in threaded hole, increase or reduce pretightning force, the bar 4 pairs of pressure transducers 6 that make to extend apply suitable pretightning force.When the pillar 1 of dryer base produces distortion, bar 4 of extending acts on fine tuning screw 9, finally makes pressure transducer 6 produce distortion.Preferred as one, transship for preventing pressure transducer and damage, install protection screw 8 below pressure transducer 6 point of application, protection screw 8 adopts tack hex screw, is installed on lower distortion and extends seat 7.Appropriate gap is left between protection screw 8 top and pressure transducer 6.When pressure transducer 6 transships, pressure transducer 6 semi-girder lower end contacts with protection screw 8, and the semi-girder flexural deformation of pressure transducer 6 is no longer increased, and plays the effect of protection sensor.Preferred as one, total outside installs protective cover 5 additional, and protective cover 5 can be fixed on the column 1 of dryer base or be fixed on and upper and lowerly extend on seat; Object is in order to avoid factor impact and the gaps between filling pressure transducer and holder such as dust, sleet, wind, affects measuring accuracy, infringement instrument.
As shown in Figure 1, when grain moisture content change in dryer main body 1 causes weight change, column changes by external load effect deflection, because distortion extend seat 3 and lower distortion of distortion in mechanism of extending extends seat 7 by double card sliding seat, screw rod, the modes such as welding or holder are fixed on pedestal column 1, and can not relative displacement be produced between pillar 1, and the shell-shaped deformation that pillar 1 produces due to load effect, be converted to extend seat 3 and lower distortion of distortion to extend the subtle change of relative distance between seat 7, be fixed on the distortion bar 4 of extending of extending on seat 3 and act on the pressure transducer 6 being fixed on lower distortion and extending on seat 7, the foil gauge on pressure transducer 6 is made to produce elastic deformation, resistance changes, voltage signal is converted into through bridge diagram, voltage signal is transferred to input and converting unit III.
As shown in Figure 9, voltage signal is collected and conversion by described input and converting unit III.This unit is by amplification filtering circuit, analog to digital conversion circuit, house dog circuit, MCU signal processor, RS485 serial communication railway superstructures.
By preposition for amplification filtering circuit, with this stress release treatment, amplifying signal.Be connected with analog to digital conversion circuit again, be responsible for simulating signal being converted into the digital signal that can be received by host computer.Again MCU signal processing circuit is connected with analog to digital conversion circuit, is responsible for processing the digital signal accepted.House dog circuit is connected with MCU circuit, prevents the phenomenons such as locked, the loss of program.Finally the signal handled well is connected with control display unit IV by RS485 serial communication circuit.
Wherein voltage signal is after filtering after amplifying circuit, and filtering noise, eliminate undesired signal, signal value amplifies.The voltage signal of filter amplifying processing still belongs to analog quantity, can't receive by host computer, to be now the digital signal that can be received by host computer through analog to digital conversion line transfer by signal.Digital signal carries out computing through MCU signal processing circuit.MCU signal processing circuit and single-chip microcomputer signal processing circuit.
When MCU system cloud gray model, the such as program that has once in a while is run mistake, is stored inefficacy, external disturbance or operate some phenomenons such as incorrect, causes system enter endless loop and cannot normally work.Need increase watchdog circuit, the basic function of house dog circuit makes program initialization after running software generation problem and misprogramming.So just can reset at once when system runs into interference like this, the so perfect to a great extent job stability of machine self.At this moment, then by digitizing, stable, to give through the Signal transmissions of computing and control and display unit IV.
Embodiment two:
See Fig. 2, the present embodiment is the change on the basis of embodiment 1, and something in common no longer repeats, and difference is, dryer main body 1 is Cirulation type grain dryer, and dryer work pattern is lots.Level detector V adopts switching regulator material level, when namely monitoring dryer inner cereal height arrival level detector height and position, then stops into grain, start to dry operation, before oven dry operation completes, no longer input new cereal to be dried, cereal dehydration weight in Real-time Collection dryer.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. a check weighing structure for crop dryer, comprises extend seat and lower distortion of distortion and to extend seat, it is characterized in that: bar of extending is adjustable to be fixed on distortion and to extend on seat, and bar upper end of extending is stretched out distortion and to be extended the adjustable in length of seat; Pressure transducer is fixed on lower distortion and extends on seat, and bar lower end of extending is fixed on pressure transducer by fine tuning screw is adjustable.
2. check weighing structure according to claim 1, is characterized in that: also comprise protective cover, and described protective cover is fixedly connected with extend seat and lower distortion of distortion and extends seat, or described protective cover is fixed on the column of dryer base; For sealing and dustproof.
3. check weighing structure according to claim 1 and 2, is characterized in that: lower distortion seat of extending arranges protection screw, at vertical direction, has gap between described protection screw and pressure transducer.
4. check weighing structure according to claim 1, is characterized in that: bar upper end of extending has screw thread and to extend seat through upper distortion, to extend bar respectively in the extend both sides of seat of upper distortion with nut lock.
5. check weighing structure according to claim 1, is characterized in that: described fine tuning screw is annular knurl flat head screw, and it is adjustable is threaded in the threaded hole of pressure transducer.
6. a crop dryer, comprises the check weighing structure of the described crop dryer of one of claim 1-5, it is characterized in that: described check weighing structure is fixed on the pillar of dryer base.
7. crop dryer according to claim 6, is characterized in that: described pillar is steel cylindrical tube.
8. crop dryer according to claim 6, is characterized in that: described pillar is channel-section steel or joist steel.
9. crop dryer according to claim 7, is characterized in that: upper distortion seat and lower distortion seat of extending of extending clamps described steel cylindrical tube by double card sliding seat.
10. crop dryer according to claim 8, is characterized in that: upper distortion seat and lower distortion seat of extending of extending is fixed on channel-section steel or joist steel by the mode of welding.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052997.5A CN103808394B (en) | 2014-02-17 | 2014-02-17 | A kind of check weighing structure and the crop dryer comprising this structure of crop dryer |
| PCT/CN2014/072505 WO2015120642A1 (en) | 2014-02-17 | 2014-02-25 | Weighing structure for grain dryer and grain dryer comprising the structure |
| JP2016600153U JP3208807U (en) | 2014-02-17 | 2014-02-25 | Grain dryer weight measuring structure and grain dryer including the structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052997.5A CN103808394B (en) | 2014-02-17 | 2014-02-17 | A kind of check weighing structure and the crop dryer comprising this structure of crop dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103808394A CN103808394A (en) | 2014-05-21 |
| CN103808394B true CN103808394B (en) | 2016-01-20 |
Family
ID=50705496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410052997.5A Active CN103808394B (en) | 2014-02-17 | 2014-02-17 | A kind of check weighing structure and the crop dryer comprising this structure of crop dryer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3208807U (en) |
| CN (1) | CN103808394B (en) |
| WO (1) | WO2015120642A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692800A (en) * | 2017-03-31 | 2018-10-23 | 井关农机株式会社 | The grain Weight-measuring device of grain drier |
| CN106769610B (en) * | 2017-04-05 | 2023-09-08 | 吉林大学 | Force measuring sensor for detecting grain moisture and force measuring grain moisture detecting device |
| CN107156290A (en) * | 2017-06-07 | 2017-09-15 | 合肥汇之新机械科技有限公司 | A kind of crop dryer with novel measuring weight structure |
| CN107741267B (en) * | 2017-11-29 | 2023-10-24 | 农业部南京农业机械化研究所 | Fruit and vegetable drying high-precision online weighing device based on multiple force sensors |
| CN113154824B (en) * | 2021-05-20 | 2023-03-24 | 佳木斯大学 | Homogeneous on-line water measuring material drying device and control method thereof |
| CN116929991B (en) * | 2023-09-15 | 2024-02-06 | 云南省林业和草原科学院 | Moisture detection device to grass seed |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963415A (en) * | 2006-12-08 | 2007-05-16 | 沈阳天成自动化工程有限公司 | Intelligence checking apparatus for level of storage bin |
| CN101736565A (en) * | 2009-03-19 | 2010-06-16 | 南京乐金熊猫电器有限公司 | Dryer with weight detecting apparatus and control method of dryer with same |
| CN101788325A (en) * | 2010-02-10 | 2010-07-28 | 吴金良 | Weight detecting device and material bin weight measuring and controlling system with weight detecting device |
| CN201589669U (en) * | 2009-08-28 | 2010-09-22 | 中山大学 | Microwave drying real-time monitoring device |
| CN201731926U (en) * | 2010-02-10 | 2011-02-02 | 吴金良 | Weight detection mechanism and stock bin weight detection control system with same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3731520A (en) * | 1967-10-05 | 1973-05-08 | Industrial Nucleonics Corp | Dryer performance indicator |
| JPH0593586A (en) * | 1991-10-02 | 1993-04-16 | Nippon Container Taaminaru Kk | Drying method and drying device |
| JP2696032B2 (en) * | 1992-03-17 | 1998-01-14 | 株式会社クボタ | Grain sorting method and grain sorting device |
| JPH07180966A (en) * | 1993-12-21 | 1995-07-18 | Iseki & Co Ltd | Crop particle moisture sensing and controlling device in crop particle drying machine |
| CN101695717A (en) * | 2009-10-27 | 2010-04-21 | 淮海工学院 | Side transducer for detecting rolling pressure of rolling mill |
-
2014
- 2014-02-17 CN CN201410052997.5A patent/CN103808394B/en active Active
- 2014-02-25 WO PCT/CN2014/072505 patent/WO2015120642A1/en active Application Filing
- 2014-02-25 JP JP2016600153U patent/JP3208807U/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963415A (en) * | 2006-12-08 | 2007-05-16 | 沈阳天成自动化工程有限公司 | Intelligence checking apparatus for level of storage bin |
| CN101736565A (en) * | 2009-03-19 | 2010-06-16 | 南京乐金熊猫电器有限公司 | Dryer with weight detecting apparatus and control method of dryer with same |
| CN201589669U (en) * | 2009-08-28 | 2010-09-22 | 中山大学 | Microwave drying real-time monitoring device |
| CN101788325A (en) * | 2010-02-10 | 2010-07-28 | 吴金良 | Weight detecting device and material bin weight measuring and controlling system with weight detecting device |
| CN201731926U (en) * | 2010-02-10 | 2011-02-02 | 吴金良 | Weight detection mechanism and stock bin weight detection control system with same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015120642A1 (en) | 2015-08-20 |
| JP3208807U (en) | 2017-02-23 |
| CN103808394A (en) | 2014-05-21 |
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