CN105928595A - Weighing signal acquisition method - Google Patents

Weighing signal acquisition method Download PDF

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Publication number
CN105928595A
CN105928595A CN201610257515.9A CN201610257515A CN105928595A CN 105928595 A CN105928595 A CN 105928595A CN 201610257515 A CN201610257515 A CN 201610257515A CN 105928595 A CN105928595 A CN 105928595A
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China
Prior art keywords
transmission belt
weight
transferring band
detection
storage silo
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Granted
Application number
CN201610257515.9A
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Chinese (zh)
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CN105928595B (en
Inventor
刘立峰
芮立国
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Hebei Jing Lan India Cements Limited
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Chengdu Rui Tu Electronics Co Ltd
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Priority to CN201610257515.9A priority Critical patent/CN105928595B/en
Publication of CN105928595A publication Critical patent/CN105928595A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G11/00Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

The invention provides a weighing signal acquisition method, and aims at making up for the deficiency in the prior art and enhancing weighing precision of material having the cohesive phenomenon and the working state of material transmission. The weighing signal acquisition method comprises the steps that the size of the material falling into a transmission belt from a storage bin is determined; and the density of the material inputted to material processing equipment from the transmission belt and the weight of the material adhered on the transmission belt are determined, and the weight of the cohesive material transmitted through the material transmission belt is determined based on the density and the weight. The requirement of high-precision input operation for granular material in the modern industrial production can be met, and intelligent degree of material input and weighing can be enhanced.

Description

Weighing-up wave acquisition method
Technical field
The present invention relates to material metering technical field, more particularly, to a kind of weighing-up wave acquisition method.
Background technology
In construction machinery industry, many places will use weighing of material (i.e. raw material), such as in manufacture of cement The Weighing control that flyash adds, and the Weighing control etc. at Modern New building materials superfine powder and additive, to these powder The Weighing control of body material, none not Yield and quality to cement industry product play vital effect.The most how to protect Card granular material stability, quick responding ability and shot and long term precision during Weighing control, is cement industry development The most always must in the face of and solve problem.
The mobility of most of granular materials is affected by moisture and inflation.It is typically due to material hoard adsorption moisture and make The mobility obtaining powder material is deteriorated, and shows that material tends to adhesive aggregation and has bigger tack, and moisture its tack the biggest is more By force, mobility is the poorest so that in storehouse, the flow region of powder layer usually presents funnel-form, the most only feed bin middle body formation material Stream, and the powder in other regions or stream order are disorderly or stagnate motionless, flow out after producing the material being initially charged " after advanced person Go out " phenomenon, this liquid form is referred to as funnel stream.Funnel stream can cause segregation, slug, caking, blanking changing bulk density etc. no Good phenomenon, these phenomenons all can cause the maximum error of weighing precision.On the other hand, it is dried or with the granular material of air-flow Mobility is extremely strong, shows as material and tends to from overflowing (self drainage), and air content is the biggest, and its mobility is the strongest.
In prior art, such as, the Chinese invention patent application of Application No. CN201310035535.8 discloses one The dynamic weighing method of fluid liquid material and system thereof, belong to fluid weighing field, dynamic weighing method by fluid impingement force, Drop amount the two affects the principal element of measuring accuracy and speed and participates in during the dosage compensation of fluid foods calculates, with metering The false weight of master scale output considers, and carries out the calculating of fluid actual weight;Dynamic weighing system going out at inlet valve Arrange speed sensor at Kou, the output of speed sensor connects metering units, and human-computer interaction module passes through I/O port and meter Amount unit connects, and the output of metering units and weigher connects dosage compensation unit, and the output of dosage compensation unit connects Controller.
But, this scheme still cannot solve the correct amount problem for cohesiveness material.
Summary of the invention
In order to make up the above-mentioned weak point of prior art, there is the material of adhesive aggregation phenomenon and determine material in correct amount The duty of relevant device in transmitting procedure, the invention provides a kind of weighing-up wave acquisition method, is used for determining and passes through thing The weight of the cohesiveness material that material transmission belt transfers out, the method includes:
Determine the volume of material falling into transmission belt from storage silo;
Determine the weight putting into the density of equipment for treating materials, the adhesive aggregation material on transmission belt from transmission belt, and accordingly Determine the weight of the cohesiveness material transferred out by material transferring band.
Include further, it is determined that fall into the volume of material of transmission belt from storage silo:
Determine the density p of the material falling into transmission belt: set the material density when entering storage silo as ρ0, material is in storage In storehouse, the time span of storage is TStorageHour, then
The pressure change, elta G of detection material storage silo;
Obtain the cumulative volume V of the material being passed in transmission belt, wherein
Further, described determine from transmission belt put into the density of equipment for treating materials, the adhesive aggregation material on transmission belt Weight, and determine therefrom that the weight of the cohesiveness material transferred out by material transferring band is included:
(1) around material storage silo M diverse location outwardly and inwardly, storage silo interior environment temperature is detectedAmbient temperatureInterior humidityAnd outer moisture
(2) along the N number of diverse location bottom material transferring band fixed mount, the temperature of detection material transmission belt local environmentAnd humidityWherein M, N are the natural number more than 1.
(3) the first moment of material transferring band, the input work of detection transmission belt will be transferred to from storage silo at material RateAnd L diverse location detection transmission belt pressure experienced bottom transmission beltAnd transmission belt The thickness of the transmission belt surface mass of predetermined positionWherein L is the natural number more than 1;
(4) the second moment before rotary kiln, the output of detection transmission belt will be put into from material transferring band at material PowerAnd L diverse location detection transmission belt pressure experienced bottom transmission belt
(5) weight of material in above-mentioned second moment is determined:
(6) weight of the transmission belt remained on surface material in above-mentioned first moment is determinedIts Middle P0Represent the transmission belt force value in the most cleaned upper detection later;
(7) put into after rotary kiln at material from material transferring band, material transferring band turn again to material will by from Storage silo is transferred to the 3rd moment of material transferring band, the pressure that L diverse location detection transmission belt bottom transmission belt is subject to PowerAnd the thickness of the transmission belt surface mass of the predetermined position of transmission beltDetermine transmission belt surface residue The weight of matter
(8) between the second moment and the 3rd moment, it is transmitted band puts into the weight of material of rotary kiln
(9) determine
Whether exceed predetermined threshold value, if exceeding, then stop the work of above-mentioned material transferring band, material transferring band is carried out clearly Reason, and detect that to measure the duty of above-mentioned pressure, the equipment of value of temperature and humidity or device the most normal.
Further, the thickness of the surface mass of described transmission belt is obtained and by infrared sensing by infrared sensor detection The characterization that device detects.
The invention has the beneficial effects as follows: the present invention passes through lot of experiments, research has obtained the cohesiveness granular substances such as cement Material is subject to the variable density during taking up the temperature of environment, humidity and transmitting on material transferring band, and and then according to merit The factors such as the thickness of rate, density and transmission belt residue determine that material transferring operating mode is the most normal, if need to overhaul material and pass Defeated band and the sensor of material storage silo, thus meet high-precision for cohesiveness granular material in modernization industrial production Degree throws in operation requirement, improves the intelligence degree that material is thrown in and weighed.
Accompanying drawing explanation
Fig. 1 shows the flow chart of the weighing-up wave acquisition method according to the present invention.
Detailed description of the invention
As it is shown in figure 1, the weighing-up wave acquisition method of the present invention, including:
Determine the volume of material falling into transmission belt from storage silo;
Determine the weight putting into the density of equipment for treating materials, the adhesive aggregation material on transmission belt from transmission belt, and accordingly Determine the weight of the cohesiveness material transferred out by material transferring band.
Include wherein it is determined that fall into the volume of material of transmission belt from storage silo:
Determine the density p of the material falling into transmission belt: set the material density when entering storage silo as ρ0, material is in storage In storehouse, the time span of storage is TStorageHour, then
The pressure change, elta G of detection material storage silo;Here pressure change is by utilizing such as pressure sensor to examine Survey what the pressure change on ground was obtained by material storage silo.
Obtain the cumulative volume V of the material being passed in transmission belt, wherein
According to a preferred embodiment of the invention, described determine that putting into the density of equipment for treating materials, adhesive aggregation from transmission belt exists The weight of the material in transmission belt, and determine therefrom that the weight of the cohesiveness material transferred out by material transferring band is included:
(1) around material storage silo M diverse location outwardly and inwardly, storage silo interior environment temperature is detectedAmbient temperatureInterior humidityAnd outer moisture
(2) along the N number of diverse location bottom material transferring band fixed mount, the temperature of detection material transmission belt local environmentAnd humidityWherein M, N are the natural number more than 1.
(3) the first moment of material transferring band, the input work of detection transmission belt will be transferred to from storage silo at material RateAnd L diverse location detection transmission belt pressure experienced bottom transmission beltAnd transmission belt The thickness of the transmission belt surface mass of predetermined positionWherein L is the natural number more than 1;
(4) the second moment before rotary kiln, the output of detection transmission belt will be put into from material transferring band at material PowerAnd L diverse location detection transmission belt pressure experienced bottom transmission belt
(5) weight of material in above-mentioned second moment is determined:
(6) weight of the transmission belt remained on surface material in above-mentioned first moment is determinedIts Middle P0Represent the transmission belt force value in the most cleaned upper detection later;
(7) put into after rotary kiln at material from material transferring band, material transferring band turn again to material will by from Storage silo is transferred to the 3rd moment of material transferring band, the pressure that L diverse location detection transmission belt bottom transmission belt is subject to PowerAnd the thickness of the transmission belt surface mass of the predetermined position of transmission beltDetermine transmission belt surface residue The weight of matter
(8) between the second moment and the 3rd moment, it is transmitted band puts into the weight of material of rotary kiln
(9) determine
Whether exceed predetermined threshold value, if exceeding, then stop the work of above-mentioned material transferring band, material transferring band is carried out clearly Reason, and detect that to measure the duty of above-mentioned pressure, the equipment of value of temperature and humidity or device the most normal.
Temperature, humidity and pressure in the present invention all use corresponding temperature sensor, humidity sensor and pressure sensing Device detects.Wherein, during detection pressure, it should be ensured that during detection, pressure sensor receives pressure substantially downwardly, i.e. guarantees At this during detection the one side of material transferring band carrying material should essentially toward top (i.e. throw in during) rather than Downward (i.e. once throw in complete preparation once to throw in during).
It should be noted that the thickness of the surface mass of transmission belt is not in terms of thickness unit (such as mm) in the present invention The physical quantity of amount, but the strong and weak physical quantity characterized of the signal detected by infrared probe, i.e. the thickness of the present invention is logical Cross what infrared sensor detection obtained.Specifically, to be provided with the preferable structure of light transmission (the most saturating the fixed position in transmission belt Flexible fiber that photosensitiveness is good, flexible rubber etc.), side is fixed with infrared emission probe under this structure, detects thickness needing It is provided with infrared receiver probe above the transmission belt of position and on the infrared emitting direction of this infrared emission probe.Infrared connect Receive the infrared signal intensity that probe basis receives, characterize above-mentioned thickness.
It addition, material alleged in the application is primarily referred to as the graininess such as cement, is easily affected by temperature and humidity and produce The material of adhesive aggregation phenomenon.
The narration made for presently preferred embodiments of the present invention above is the purpose for illustrating, and is not intended to limit present invention essence Really for disclosed form, learn and make an amendment or change to be possible based on above teaching or from embodiments of the invention , embodiment is for explaining orally the principle of the present invention and allowing those skilled in the art utilize the present invention to exist with various embodiments Actual application is upper and selects and narration, and the technological thought attempt of the present invention is determined by claim and equalization thereof.

Claims (4)

1. a weighing-up wave acquisition method, for determining the weight of the cohesiveness material transferred out by material transferring band, The method includes:
Determine the volume of material falling into transmission belt from storage silo;
Determine the weight putting into the density of equipment for treating materials, the adhesive aggregation material on transmission belt from transmission belt, and determine therefrom that By the weight of the cohesiveness material that material transferring band transfers out.
Method the most according to claim 1, it is characterised in that determine the volume of material bag falling into transmission belt from storage silo Include:
Determine the density p of the material falling into transmission belt: set the material density when entering storage silo as ρ0, material is in storage silo The time span of storage is TStorageHour, then
The pressure change, elta G of detection material storage silo;
Obtain the cumulative volume V of the material being passed in transmission belt, wherein
Method the most according to claim 2, it is characterised in that described determine from transmission belt put into equipment for treating materials close Degree, the weight of adhesive aggregation material in transmission belt, and determine therefrom that the cohesiveness material that transferred out by material transferring band Weight includes:
(1) around material storage silo M diverse location outwardly and inwardly, storage silo interior environment temperature is detectedOutward Portion's environment temperatureInterior humidityAnd outer moisture
(2) along the N number of diverse location bottom material transferring band fixed mount, the temperature of detection material transmission belt local environmentAnd humidityWherein M, N are the natural number more than 1.
(3) the first moment of material transferring band, the input power of detection transmission belt will be transferred to from storage silo at materialAnd L diverse location detection transmission belt pressure experienced bottom transmission beltAnd transmission belt is pre- If the thickness of the transmission belt surface mass of positionWherein L is the natural number more than 1;
(4) the second moment before rotary kiln, the power output of detection transmission belt will be put into from material transferring band at materialAnd L diverse location detection transmission belt pressure experienced bottom transmission belt
(5) weight of material in above-mentioned second moment is determined:
(6) weight of the transmission belt remained on surface material in above-mentioned first moment is determinedWherein P0Table Show the transmission belt force value in the most cleaned upper detection later;
(7) after material is put into rotary kiln from material transferring band, material transferring band turns again to material will be by from storage Storehouse is transferred to the 3rd moment of material transferring band, L diverse location detection transmission belt pressure experienced bottom transmission beltAnd the thickness of the transmission belt surface mass of the predetermined position of transmission beltDetermine transmission belt remained on surface material Weight
(8) between the second moment and the 3rd moment, it is transmitted band puts into the weight of material of rotary kiln
(9) determine
Whether exceed predetermined threshold value, if exceeding, then stop the work of above-mentioned material transferring band, material transferring band is cleared up, And detect that to measure the duty of above-mentioned pressure, the equipment of value of temperature and humidity or device the most normal.
Method the most according to claim 3, it is characterised in that the thickness of the surface mass of described transmission belt is by infrared biography The characterization that sensor detection obtains and detected by infrared sensor.
CN201610257515.9A 2016-04-22 2016-04-22 Weighing-up wave acquisition method Active CN105928595B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109335721A (en) * 2018-10-19 2019-02-15 巴彦淖尔西部铜业有限公司 A kind of measuring hoper glues mine processing method and system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201425503Y (en) * 2009-06-10 2010-03-17 北京中盛博方环保工程技术有限公司 Miscellaneous material pile measuring system
CN102224399A (en) * 2008-12-02 2011-10-19 尤尼威蒂恩技术有限责任公司 Polymer finishing process
CN202126301U (en) * 2011-06-24 2012-01-25 长沙盛泓机械有限公司 Belt weigher adopting addition and subtraction weighing for burdening of concrete material
DE102014101558A1 (en) * 2013-11-08 2015-05-13 Sartorius Lab Instruments Gmbh & Co. Kg Precision balance with removable climate module
CN104697616A (en) * 2015-04-03 2015-06-10 武汉一冶钢结构有限责任公司 Industrial fuel gas quality measurement device and method based on LabVIEW
CN104949748A (en) * 2014-03-31 2015-09-30 宝钢不锈钢有限公司 Method for self-testing of electronic belt weighing in real-time and online way

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102224399A (en) * 2008-12-02 2011-10-19 尤尼威蒂恩技术有限责任公司 Polymer finishing process
CN201425503Y (en) * 2009-06-10 2010-03-17 北京中盛博方环保工程技术有限公司 Miscellaneous material pile measuring system
CN202126301U (en) * 2011-06-24 2012-01-25 长沙盛泓机械有限公司 Belt weigher adopting addition and subtraction weighing for burdening of concrete material
DE102014101558A1 (en) * 2013-11-08 2015-05-13 Sartorius Lab Instruments Gmbh & Co. Kg Precision balance with removable climate module
CN104949748A (en) * 2014-03-31 2015-09-30 宝钢不锈钢有限公司 Method for self-testing of electronic belt weighing in real-time and online way
CN104697616A (en) * 2015-04-03 2015-06-10 武汉一冶钢结构有限责任公司 Industrial fuel gas quality measurement device and method based on LabVIEW

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109335721A (en) * 2018-10-19 2019-02-15 巴彦淖尔西部铜业有限公司 A kind of measuring hoper glues mine processing method and system

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Effective date of registration: 20180713

Address after: 074200 Yuanyan Village, Dalonghua Township, Yixian County, Baoding City, Hebei Province

Applicant after: Hebei Jing Lan India Cements Limited

Address before: 610041 No. 220, Zhong Bai Road, Zhong He street, hi tech Zone, Chengdu, Sichuan

Applicant before: Chengdu Rui Tu Electronics Co., Ltd.

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