CN101261151A - Belt scale weighing synchronous peeling method and synchronous peeling belt scale - Google Patents
Belt scale weighing synchronous peeling method and synchronous peeling belt scale Download PDFInfo
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- CN101261151A CN101261151A CNA200810023913XA CN200810023913A CN101261151A CN 101261151 A CN101261151 A CN 101261151A CN A200810023913X A CNA200810023913X A CN A200810023913XA CN 200810023913 A CN200810023913 A CN 200810023913A CN 101261151 A CN101261151 A CN 101261151A
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- belt
- tare weight
- weighing
- conveying belt
- tare
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Abstract
The invention relates to a belt weigher weighing synchronous skinning method and a belt weigher which realizes the method, belonging to the weighing measurement technical field. In the method, as a tare weight sensing device is arranged at the position of the prearranged distance from the delivery belt returning section of a belt weigher frame to a positive advancing section belt weighing sensor, after the weighing of the belt weigher runs, the gross weight data that the bearing delivery belt passes through the positive advancing section weighing sensor and the tare data that the empty-loaded delivery belt passes through the returning section tare weight sensing device are recorded; the lagged time of the delivery belt running from the weighing sensor to the tare weight sensing device is worked out according to the running speed of the delivery belt and the prearranged running distance; finally, the skinned net weight data is obtained by taking away the tare weight data recorded in the lagged time from the real-time recorded gross weight data. As the method of the invention realizes deducting the synchronous tare weight during the skinning, whether the delivery belt is abraded or bonded to material, the net weight data with enough precision can be obtained; compared with the prior art, the method of the invention has outstanding practical characteristics and obvious progress.
Description
Technical field
The present invention relates to a kind of peeling weighing method of belt balance weighing, especially a kind of belt scale weighing synchronous peeling method also relates to the belt conveyer scale of realizing this method simultaneously, belongs to the Weighing technical field.
Background technology
Belt conveyer scale is most effective and be most widely used among present various bulk materials add up weighing apparatus automatically, its typical structure and principle are: the Weighing mechanism of belt conveyer scale is installed on the frame of belt conveyor, and placing conveying belt is under the belt, and material is then carried above conveying belt.When conveying belt carried material by the belt conveyer scale weighing platform, the acting in conjunction that load sensor is subjected to material gravity, the deadweight of device for measuring force mechanical component and is positioned at that section of weighing platform conveying belt weight weighed up gross weight (referring to Fig. 1).
In order to obtain the net weight of material, just need to remove tare weight (being called for short " peeling "), that section conveying belt weight of promptly removing the deadweight of device for measuring force mechanical component and being positioned at weighing platform.Usually, the deadweight of mechanical component is generally comparatively fixing, therefore becomes the quantitative part of tare weight.And therefore conveying belt becomes the change part of tare weight owing to physical presence unevenness such as quality, thickness, seams, also is accurately to remove the peel reluctant part.
Find that in practical matter the different parts weight ubiquity of whole piece conveying belt difference, and the above-mentioned difference of passing in time also uncertain variation can take place.
Understand according to the applicant, in the prior art, the data of conveying belt deadweight are not transported at belt conveyer scale to detect in advance under the state of material and are obtained.The detection of the detection of tare weight and material gross weight different time on same weighing platform carries out respectively.The time interval length of these two work is decided because of the restriction or the management expectancy of on-the-spot process conditions, generally has tens of minutes and does not wait to a couple of days, and some places may reach several weeks.Obviously, the tare weight value when detected in advance tare weight value and actual weighing has sizable deviation, has constituted the very important part of weighting error with recording the foundation of also unalterable tare weight as peeling in advance.Therefore adopt above-mentioned existing peeled technology to cause bigger error in dipping because of there being irrational defective.
Retrieval is found, publication number be CN2785005, open day for the Chinese utility model patent of 2006.05.31 discloses a kind of fluid flow Based Intelligent Control belt conveyer scale fixed point peeling weighing method, in addition publication number be CN101092188, open day for the Chinese invention patent of 2007.12.26 discloses a kind of non-inertia on-line real time tare removing quantificationally packing system.Though these two kinds of technical schemes are relatively complicated all to removing the peel the heavy positive effect that has.
In addition, publication number is CN2785005, open day to disclose a kind of fluid flow intelligence controlling device for the Chinese utility model patent of 2006.05.31.This be a kind of according to electronic scales to value of weighing in real time of dress liquid container with preset two in advance gravimetric value (gravimetric value when promptly allowing gravimetric value that motor reduces speed now and motor shutdown) control rotating speed of motor, thereby reach the device of controlling liquid flow.What this patented claim was used is not in fact belt conveyer scale, does not relate to new barking method.Publication number be CN101092188, open day for the Chinese invention patent of 2007.12.26 discloses a kind of non-inertia on-line real time tare removing quantificationally packing system.Though this packaging system comprises belt conveyer scale, described barking method is at the dynamic smoke box scale of another one in the system, and tare weight implication herein is meant the net weight of sky smoke box, but not refers to the conveying belt of belt conveyer scale.
In a word, retrieval finds that as yet except that the present patent application other is different from the patented technology of the traditional barking method of the belt conveyer scale described in the background technology.
Summary of the invention
The objective of the invention is: propose a kind ofly can avoid the error in dipping that above-mentioned prior art unreasonable factor causes and the belt scale weighing synchronous peeling method of simple economy, be given the special belt scale weighing synchronous peeling belt conveyer scale that is provided with of this method of realization simultaneously, thereby obtain desirable Weighing result.
The applicant recognizes after analyzing by the problem that prior art is existed, prior art is by conveying belt deadweight under the state that detects belt conveyer scale in advance and do not transport material, thereby the barking method of being deducted when actual weighing exists the main cause than mistake to be:
1. the loss of conveying belt self.After the conveying belt long-time running, the top layer can take place inevitably wear and tear and come off, the result will cause the variation of tare weight.
2. the sticking thing of conveying belt causes changing.Contact with the material that is transferred because belt conveyer scale is inevitable in the convey materials process, and material is very big with different its physical differences of character, all contains more water and powder as large crude fuels such as coal and iron ore concentrates.These moisture and powder are bonded on the conveying belt, will change the weight of conveying belt.Loading is when the belt conveyer scale once more when this conveying belt, and this part weight reality has become the part of tare weight, but is repeated metering as the material net weight, thereby causes the error of metering.
On above understanding basis, belt scale weighing synchronous peeling method of the present invention may further comprise the steps:
The first step, apart from positive process section LOAD CELLS preset distance position the tare weight sensing device is set in the conveying belt backhaul section of belt conveyer scale frame;
After second step, the belt balance weighing operation, the recording carrying conveying belt is by the gross weight data of positive process section LOAD CELLS and the tare weight data of unloaded conveying belt process backhaul section tare weight sensing device;
The 3rd goes on foot, tries to achieve conveying belt is moved to the tare weight sensing device by LOAD CELLS retardation time according to conveying belt travelling speed and described predetermined running distance;
The 4th step, deduct the tare weight data of record retardation time, the net weight data after obtaining removing the peel with the gross weight data of real time record.
Because method of the present invention is deducted synchronous tare weight when having realized peeling, therefore no matter whether conveying belt weares and teares, and also conveying belt viscous material whether no matter all can obtain having the net weight data of enough accuracy, compared with prior art, have outstanding substantive distinguishing features and obvious improvement.
The special-purpose belt scale weighing synchronous peeling belt conveyer scale of realizing the inventive method comprises rack-mounted conveying belt, and described frame is equipped with LOAD CELLS in the positive process section distance of conveying belt; Described frame is installed the base plate of tare weight LOAD CELLS in conveying belt backhaul section apart from positive process section LOAD CELLS preset distance stationkeeping, bear the scale frame that back up pad is extended at two ends downwards on the described tare weight LOAD CELLS, described two back up pads support tare weight weighing carrier roller, described tare weight weighing carrier roller holding conveying belt backhaul section.
Like this, after the belt balance weighing operation, the recording carrying conveying belt is by the gross weight data of positive process section LOAD CELLS and the tare weight data of unloaded conveying belt process backhaul section tare weight sensing device, try to achieve conveying belt is moved to the tare weight sensing device by LOAD CELLS retardation time according to conveying belt travelling speed and described predetermined running distance again, gross weight data with real time record deduct the tare weight data that write down retardation time, the net weight data after can obtaining removing the peel.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the belt balance weighing synoptic diagram.1 is material to be claimed among the figure, the 2nd, and conveying belt, the 3rd, LOAD CELLS, the 4th, the metering carrying roller of belt conveyer scale.
Fig. 2 is the structure diagram of one embodiment of the invention.
Fig. 3 is the perspective view of one embodiment of the invention.
Fig. 4 is the tare weight weighing sensing device structural representation of Fig. 3 embodiment.
When cuing open the backhaul conveying belt for Fig. 3, Fig. 5 looks up perspective view.
Embodiment
Present embodiment is used to realize that the synchronous peeling belt scale of belt scale weighing synchronous peeling method such as Fig. 2 to shown in Figure 5, install a batch total amount carrying roller 4 and a winding conveying belt 2 on the frame 10.Conveying belt 2 can be divided into the positive process section and the unloaded backhaul section of carrying material in the winding operational process.Positive process section is born on metering carrying roller 4, and metering carrying roller 4 is carried on the LOAD CELLS 3 of installation and frame, constitutes weighing platform.In order to realize belt scale weighing synchronous peeling method, frame 10 has been installed the base plate 5-1 of tare weight LOAD CELLS 5 in conveying belt backhaul section apart from positive process section LOAD CELLS preset distance stationkeeping, bear two ends on this tare weight LOAD CELLS and extend the scale frame 5-2 of back up pad downwards, this two back up pad supports rotatable tare weight weighing carrier roller 5-3, this tare weight weighing carrier roller 5-3 middle part fixed interval support ring 5-6, two ends are mouse cage 5-5 fixedly, so steady holding conveying belt backhaul section, eliminate the smooth face of cylinder of common carrying roller and be easy to the defective of sizing, thereby help obtaining tare weight data more accurately.
In addition, on the frame of tare weight weighing carrier roller 5-3 one end, coaxial tachogenerator 6 is housed, in order to avoid occurring skidding between conveying belt and the tare weight weighing carrier roller 5-3 as far as possible, on tare weight weighing carrier roller 5-3, also be fixed with the two gear ring 5-4 that external diameter equates with the support ring external diameter.Two gear ring 5-4 lay respectively between the support ring 5-6 at weighing carrier roller 5-3 two ends mouse cage 5-5 and middle part.Experiment showed, this tare weight metering and the design that the measuring apparatus that tests the speed organically combines not only to be made compact conformation, and help improving measuring accuracy.
Adopt present embodiment to realize that the thinking and the key step of belt scale weighing synchronous peeling method are as follows:
Because the conveying belt backhaul section in the belt conveyer scale frame is provided with the tare weight sensing device apart from positive process section LOAD CELLS preset distance position; Therefore, can belt balance weighing after the operation, the tare weight data that gross weight data and the unloaded conveying belt of recording carrying conveying belt by positive process section LOAD CELLS passes through backhaul section tare weight sensing device; Try to achieve conveying belt is moved to the tare weight sensing device by LOAD CELLS retardation time according to conveying belt travelling speed and described predetermined running distance again; At last, the gross weight data with real time record deduct the tare weight data that write down retardation time, the net weight data after obtaining removing the peel.
Practice shows, because tare weight sensing device present position is in conveying belt backhaul section, do not had material on the conveying belt this moment, but the moisture content and the powder that are bonded on the conveying belt still exist, although the position of tare weight is surveyed in backhaul and the weighing platform of LOAD CELLS has certain distance, the tare weight value of in fact detected conveying belt deadweight value when weighing equates substantially.Then, by the calculation function of computing machine and the detection that obtains tare weight easily constantly and corresponding gross weight detect constantly, thereby deduct the purpose of synchronous tare weight when reaching peeling according to the time that tare weight lags behind gross weight.
It below is present embodiment compliance test result test situation.Can see, obviously improve the weighing accuracy of belt conveyer scale, during especially to transportation water cut height, powder material how, act on more obvious.
This belt conveyer scale is flush-mounted on the belt conveyor, three sections of groove type carrying roller group, the conveying belt material is an EP canvas core multilayer rubber band, bandwidth 650mm, the whole long 97.76m of astragal, vulcanizate joint, nominal tape speed 1.6m/s, the whole circle of actual measurement (61.14 ± 0.08) s working time is equipped with the trolley type conveyer stretcher.Belt conveyer scale rated flow 200t/h, tachogenerator pulse generation rate 180pulse/m.
Claims (5)
1. belt scale weighing synchronous peeling method is characterized in that may further comprise the steps:
The first step, apart from positive process section LOAD CELLS preset distance position the tare weight sensing device is set in the conveying belt backhaul section of belt conveyer scale frame;
After second step, the belt balance weighing operation, the recording carrying conveying belt is by the gross weight data of positive process section LOAD CELLS and the tare weight data of unloaded conveying belt process backhaul section tare weight sensing device;
The 3rd goes on foot, tries to achieve conveying belt is moved to the tare weight sensing device by LOAD CELLS retardation time according to conveying belt travelling speed and described predetermined running distance;
The 4th step, deduct the tare weight data of record retardation time, the net weight data after obtaining removing the peel with the gross weight data of real time record.
2. according to the synchronous peeling belt scale of the described belt scale weighing synchronous peeling method of claim 1, it is characterized in that: comprise rack-mounted conveying belt, described frame is equipped with LOAD CELLS in the positive process section distance of conveying belt; Described frame is installed the base plate of tare weight LOAD CELLS in conveying belt backhaul section apart from positive process section LOAD CELLS preset distance stationkeeping, bear the scale frame that back up pad is extended at two ends downwards on the described tare weight LOAD CELLS, described two back up pads support tare weight weighing carrier roller, described tare weight weighing carrier roller holding conveying belt backhaul section.
3. synchronous peeling belt scale according to claim 2 is characterized in that: described two back up pads support rotatable tare weight weighing carrier roller, described tare weight weighing carrier roller middle part fixed interval support ring, and two ends are mouse cage fixedly.
4. synchronous peeling belt scale according to claim 3 is characterized in that: on the frame of described tare weight weighing carrier roller one end coaxial tachogenerator is housed.
5. synchronous peeling belt scale according to claim 4, it is characterized in that: also be fixed with two gear rings that external diameter equates with the support ring external diameter on the described tare weight weighing carrier roller, described two gear rings lay respectively between the support ring at weighing carrier roller two ends mouse cage and middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810023913XA CN101261151A (en) | 2008-04-22 | 2008-04-22 | Belt scale weighing synchronous peeling method and synchronous peeling belt scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810023913XA CN101261151A (en) | 2008-04-22 | 2008-04-22 | Belt scale weighing synchronous peeling method and synchronous peeling belt scale |
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| CN101261151A true CN101261151A (en) | 2008-09-10 |
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| CNA200810023913XA Pending CN101261151A (en) | 2008-04-22 | 2008-04-22 | Belt scale weighing synchronous peeling method and synchronous peeling belt scale |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288266A (en) * | 2011-08-30 | 2011-12-21 | 孙凯 | Electronic belt scale and metering precision compensating method |
| CN102818608A (en) * | 2012-08-13 | 2012-12-12 | 赛摩电气股份有限公司 | Free float type belt weighing device |
| CN104501923A (en) * | 2015-01-16 | 2015-04-08 | 山东西泰克仪器有限公司 | Check-weigher |
| CN106885750A (en) * | 2017-02-24 | 2017-06-23 | 武汉科技大学 | A kind of sintering deposit ferrous oxide content detecting system and its method |
| CN110304396A (en) * | 2019-03-15 | 2019-10-08 | 苏州和瑞科自动化科技有限公司 | It is a kind of continuously to sentence material system |
| CN112224933A (en) * | 2020-11-25 | 2021-01-15 | 邹城兖矿泰德工贸有限公司 | Automatic watering device of belt feeder |
-
2008
- 2008-04-22 CN CNA200810023913XA patent/CN101261151A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288266A (en) * | 2011-08-30 | 2011-12-21 | 孙凯 | Electronic belt scale and metering precision compensating method |
| CN102288266B (en) * | 2011-08-30 | 2013-01-30 | 山东三恩电子有限公司 | Electronic belt scale and metering precision compensating method |
| WO2014026459A1 (en) * | 2012-08-12 | 2014-02-20 | 赛摩电气股份有限公司 | Free floating type belt weighing apparatus |
| CN102818608A (en) * | 2012-08-13 | 2012-12-12 | 赛摩电气股份有限公司 | Free float type belt weighing device |
| CN102818608B (en) * | 2012-08-13 | 2015-01-07 | 赛摩电气股份有限公司 | Free float type belt weighing device |
| CN104501923A (en) * | 2015-01-16 | 2015-04-08 | 山东西泰克仪器有限公司 | Check-weigher |
| CN106885750A (en) * | 2017-02-24 | 2017-06-23 | 武汉科技大学 | A kind of sintering deposit ferrous oxide content detecting system and its method |
| CN110304396A (en) * | 2019-03-15 | 2019-10-08 | 苏州和瑞科自动化科技有限公司 | It is a kind of continuously to sentence material system |
| CN110304396B (en) * | 2019-03-15 | 2021-09-17 | 苏州和瑞科自动化科技有限公司 | Continuous material judging system |
| CN112224933A (en) * | 2020-11-25 | 2021-01-15 | 邹城兖矿泰德工贸有限公司 | Automatic watering device of belt feeder |
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Open date: 20080910 |