CN103057928A - Metering control method of constant feeder - Google Patents

Metering control method of constant feeder Download PDF

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Publication number
CN103057928A
CN103057928A CN2012105636067A CN201210563606A CN103057928A CN 103057928 A CN103057928 A CN 103057928A CN 2012105636067 A CN2012105636067 A CN 2012105636067A CN 201210563606 A CN201210563606 A CN 201210563606A CN 103057928 A CN103057928 A CN 103057928A
Authority
CN
China
Prior art keywords
weighing
speed
point
control
metering
Prior art date
Application number
CN2012105636067A
Other languages
Chinese (zh)
Inventor
王晓初
秦凤朝
李庆云
王志国
张明伟
王刚
Original Assignee
承德承信自动化工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 承德承信自动化工程有限公司 filed Critical 承德承信自动化工程有限公司
Priority to CN2012105636067A priority Critical patent/CN103057928A/en
Publication of CN103057928A publication Critical patent/CN103057928A/en

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Abstract

Provided is a metering control method of a constant feeder. The scheme of the metering control method includes: dividing the material conveyed continuously into a plurality of weighting metering length units, enabling instant flow close to materials on a discharging port section to become true actual flow by combining with the delayed speed adjustment technology and a batch-type pulse control method, enabling the actual flow to be equal to the designed flow through speed regulation, and further improving the conveying metering accuracy of the metering conveying device. By improving the metering control method of the feeder, the instant feeding speed during material falling is equal to the designed speed, feeding precision and accuracy are improved, high requirements of the production technique are met, and production efficiency and product quality are improved.

Description

A kind of measurement control method of constant feeder
Technical field
The present invention relates to constant feeder, particularly a kind of measurement control method of constant feeder.
Background technology
Belt conveyer scale in the market and the measurement control method of constant feeder all are to adopt the continuous measurement mode: the weight of the instant material of weighing section weighing, the product of this weight and instantaneous velocity is instant flow, the instantaneous velocity of carrying by the electrical control adjustment according to the design discharge of need of production again, the instant flow of conveying is equated with design discharge, reach the purpose of quantitative conveying.Because the mechanical equivalent of light feature of present equipment: weighing section and feed opening have certain distance, after instantaneous velocity is adjusted, instant flow is actually the instant flow of weighing section place material, also have a segment distance apart from feed opening this moment, not that truly actual flow (is only the actual flow of real meaning apart from the instant flow of feed opening place material, and the instant flow of this section material and the instant flow after the weighing section adjustment have very large error), this will largely affect proportioning accuracy and the quality of product, bring very large economic loss to actual production, so that can't satisfy the demand of a lot of production technologies.Therefore need to propose new measurement control method, to improve feed precision and accuracy, adapt to the high request of production technology.
Summary of the invention
The object of the invention is to propose a kind of measurement control method of constant feeder, there are relatively large deviation in the instant flow of material and actual design flow when having solved existing constant feeder feed, cause the feed precision low, can not satisfy the problem of production technology high request.
For reaching this purpose, the present invention by the following technical solutions:
A kind of measurement control method of constant feeder, setting material moves with fixed speed V0, distance on the feeder load-transfer device between material weighing section aft terminal C and the forward terminal B is that the length of weighing material is L0, the distance of weighing section forward terminal B and material whereabouts initial point A is L1, L1 is more than or equal to L0, beginning to measure L0 section weight of material when material enters weighing section L0 is G0, this moment weighing section L0 instant flow rate Q0=Go* υ o/Lo, when the forward terminal B of weighing section LO runs to material whereabouts initial point A, adjust the material running velocity to Vt, wherein Vt is the delivery speed of instant flow rate Q0 when equating with design discharge, so that the material of weighing section LO falls with the speed of Vt in succession, until weighing section aft terminal C point runs to whereabouts initial point A point; At this moment, the material of weighing section Lo section continues forward operation, when the C point arrives the B point, electric control system is being speeded up the again weight of material of weighing weighing section Lo, and according to instant flow rate and the design discharge of material this moment, calculate the real-world operation speed V1 of this section material, and postpone as stated above speed governing, constantly loop with this, realize continuous accurate metering feed.
Preferably, adopt batch (-type) pulse control electric-control system, realize that speed V0 is to the batch (-type) adjustment of Vt.
The present invention is by improving the measurement control method of feeder, so that the instant delivery rate of material when falling equate with design speed, improved feed precision and accuracy, satisfied the high request of production technology, improved production efficiency and product design.
Description of drawings
Fig. 1 is principle of the invention scheme drawing.
Among the figure:
1, load-transfer device; 2, material; 3, backing roll; L0 is weighing section; L1 is that the weighing section forward terminal is apart from the distance of material whereabouts initial point; The A point is material whereabouts initial point; The B point is the weighing section forward terminal; The C point is the weighing section aft terminal.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing and by the specific embodiment.
Fig. 1 is principle of the invention scheme drawing.
As shown in FIG., transport material 2 on the load-transfer device 1 of belt conveyer scale, the load-transfer device lower end is equipped with backing roll 3.
The material that to carry continuously in the present embodiment is divided into several Weighing unit of length, weighing section length is designated as L0, and in conjunction with the speed adjusting technique, the batch (-type) pulse control method that postpone, so that become the actual flow of real meaning apart from the instant flow of feed opening section material, and the Negotiation speed adjustment makes actual flow equate with design discharge, and then improved the conveying and metering precision of metering conveyor.
Concrete scheme is as follows:
Move with fixed speed V0 when material 2 is initial, the device design flow is Q, to begin to measure L0 section weight of material be G0 to weighing point when material enters weighing section L0, this moment, G0*V0/L0 was the instant flow rate Q0 of weighing section L0 this moment, because Q0 and design discharge Q have certain deviation, must be that Vt guarantee instant flow rate Qt equates with design discharge Q by the instant delivery speed of electric-control system adjustment, satisfy need of production.This moment, electric-control system was not just to regulate the speed at once to be Vt, essence is that near the material of material L1 section A point begins with the operation of Vt speed and beginning blanking because regulate the speed this moment, the material unit weight of L1 section and the material unit weight of L0 section are not necessarily identical even have a long way to go, therefore can produce great error, for avoiding this error, take to postpone the means of speed governing, that is: when running to initial point A point place, material whereabouts, the forward terminal B of weighing section L0 point begins again speed governing to Vt, the material of weighing section L0 is all in succession with Vt operation and blanking, until weighing section aft terminal C point runs to material whereabouts initial point A point afterwards.By the speed adjusting technique of this delay, can guarantee more accurately that the instant flow rate Qt of blanking equates with design discharge Q, satisfy need of production, improve the conveying and metering precision.
Simultaneously, the material of weighing section L0 section moves forward, when weighing section aft terminal C point arrives weighing section forward terminal B point, electric control system is being speeded up the again weight of material of weighing weighing section L0, and according to instant flow rate and the design discharge of material this moment, calculate the real-world operation speed of this section material, and postpone as stated above speed governing, constantly loop with this, realize continuous accurate metering feed.

Claims (2)

1. the measurement control method of a constant feeder, it is characterized in that: set material and move with fixed speed V0, distance on the feeder load-transfer device between material weighing section aft terminal C and the forward terminal B is that the length of weighing material is L0, the distance of weighing section forward terminal B and material whereabouts initial point A is L1, L1 is more than or equal to L0, beginning to measure L0 section weight of material when material enters weighing section L0 is G0, this moment weighing section L0 instant flow rate Q0=Go* υ o/Lo, when the forward terminal B of weighing section LO runs to material whereabouts initial point A, adjust the material running velocity to Vt, wherein Vt is the delivery speed of instant flow rate Q0 when equating with design discharge, so that the material of weighing section LO falls with the speed of Vt in succession, until weighing section aft terminal C point runs to whereabouts initial point A point; At this moment, the material of weighing section Lo section continues forward operation, when the C point arrives the B point, electric control system is being speeded up the again weight of material of weighing weighing section Lo, and according to instant flow rate and the design discharge of material this moment, calculate the real-world operation speed V1 of this section material, and postpone as stated above speed governing, constantly loop with this, realize continuous accurate metering feed.
2. the measurement control method of a kind of constant feeder according to claim 1 is characterized in that: adopt batch (-type) pulse control electric-control system, realize that speed V0 is to the batch (-type) adjustment of Vt.
CN2012105636067A 2012-12-21 2012-12-21 Metering control method of constant feeder CN103057928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012105636067A CN103057928A (en) 2012-12-21 2012-12-21 Metering control method of constant feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012105636067A CN103057928A (en) 2012-12-21 2012-12-21 Metering control method of constant feeder

Publications (1)

Publication Number Publication Date
CN103057928A true CN103057928A (en) 2013-04-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107054911A (en) * 2017-04-14 2017-08-18 西安热工研究院有限公司 A kind of automatic decision and the control system and method for eliminating run coal bin chute blockage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964599A (en) * 1970-09-10 1976-06-22 Koninklijke Nederlandsche Hoogovens En Staalfabriken N.V. Process and apparatus for the controlling of the conveyance of loose bulk material
JPS6336251Y2 (en) * 1981-12-29 1988-09-27
EP0565740B1 (en) * 1992-04-11 1996-01-10 Carl Schenck Ag Method and apparatus for determining the extraction flow rate of a belt weigher
CN202063536U (en) * 2011-04-13 2011-12-07 福建龙净脱硫脱硝工程有限公司 Double-speed-regulation continuous metering feeding device for spiral conveyer and omniseal belt conveyer scale
CN202072266U (en) * 2011-04-02 2011-12-14 孙凯 Quantitative feeder
CN202609540U (en) * 2012-06-12 2012-12-19 贵阳铝镁设计研究院有限公司 Quantitative feeding system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964599A (en) * 1970-09-10 1976-06-22 Koninklijke Nederlandsche Hoogovens En Staalfabriken N.V. Process and apparatus for the controlling of the conveyance of loose bulk material
JPS6336251Y2 (en) * 1981-12-29 1988-09-27
EP0565740B1 (en) * 1992-04-11 1996-01-10 Carl Schenck Ag Method and apparatus for determining the extraction flow rate of a belt weigher
CN202072266U (en) * 2011-04-02 2011-12-14 孙凯 Quantitative feeder
CN202063536U (en) * 2011-04-13 2011-12-07 福建龙净脱硫脱硝工程有限公司 Double-speed-regulation continuous metering feeding device for spiral conveyer and omniseal belt conveyer scale
CN202609540U (en) * 2012-06-12 2012-12-19 贵阳铝镁设计研究院有限公司 Quantitative feeding system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107054911A (en) * 2017-04-14 2017-08-18 西安热工研究院有限公司 A kind of automatic decision and the control system and method for eliminating run coal bin chute blockage
CN107054911B (en) * 2017-04-14 2019-10-11 西安热工研究院有限公司 A kind of control system and method judged automatically and eliminate run coal bin chute blockage

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Effective date of abandoning: 20160706