CN101482756B - Humidity control system of down sorting machine - Google Patents
Humidity control system of down sorting machine Download PDFInfo
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- CN101482756B CN101482756B CN2009100247304A CN200910024730A CN101482756B CN 101482756 B CN101482756 B CN 101482756B CN 2009100247304 A CN2009100247304 A CN 2009100247304A CN 200910024730 A CN200910024730 A CN 200910024730A CN 101482756 B CN101482756 B CN 101482756B
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- humidity
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- steam
- humidity sensor
- control system
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Abstract
The present invention relates to a control system of down classifying processing, and especially relates to a down classifier humidity control system based on PLC. The invention is mainly used for down processing manufacturing industry, and belongs to the technical field of down processing. The system comprises a main air blower, a PLC programmable logic controller, a humidity sensor and a plurality of classifying box. The humidity control system is provided with a steam leading-in device and uses the humidity sensor in the classifying box for real-time obtaining the air humidity of present classifying box and feeding back the data to PLC. The PLC automatically controls the air humidity in the classifier in the classifying processing procedure. The down adsorption phenomenon caused by electrostatic charges in down classifying is eliminated through steam. Furthermore the humidity in the classifier is kept constant according to a preset target humidity value with automatic control of PLC.
Description
Technical field
The present invention relates to a kind of control system of eider down classification processing, relate in particular to a kind of humidity control system of down sorting machine, be mainly used in eider down processing and manufacturing industry, belong to the eider down processing technique field based on PLC.
Background technology
In the eider down processing industry, roughly be made up of steps such as adding hair, wash-out, oven dry, ash disposal, classification for the preliminary working of eider down at present, wherein classification is a ring of most critical in this technological process.Classification is that eider down is placed in the confined space, utilizes the principle of negative pressure air draught, by the difference of proportion eider down is divided into the production run of the product of different brackets, so it has directly determined the quality of product eider down.If the traditional down-sorting machine air humidity in the eider down assorting process on the domestic and international market is lower at present, eider down in the raw material and feather produce static because rub each other easily, this has just brought two problems: 1. eider down and feather adsorb each other because of static, classification can't separate it, influence the effect of eider down classification greatly, reduce finished product eider down quality.2. eider down and feather can be adsorbed on the interior wallboard of classifier.If do not removed, dividing time-like meeting and raw material mixed in together so next time, because two subseries starting material there are differences, therefore causing classification to produce a desired effect, have a strong impact on the eider down quality.If removed, because the classifier inner space is huge, complex structure can't be accomplished thorough removing at all; And need a large amount of manpowers of cost and time, the efficient that lower greatly eider down is produced.
Eliminate because of friction produces the eider down adsorption phenomena that static causes at present both at home and abroad, and report is not arranged as yet by the equipment that PLC carries out automatic humidity control for utilizing steam to increase the air humidity that eider down divides time-like.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art part, a kind of eider down classification moisture control system based on PLC is provided, this system comprises main air blower, PLC programmable logic controller (PLC), humidity sensor and several utility boxs, this moisture control system has the steam gatherer, eliminate the eider down adsorption phenomena that eider down divides time-like to cause because of static by steam, and, utilize PLC to control automatically according to default target humidity value, make that the humidity in the classifier keeps constant.
The present invention realizes with following technical scheme: a kind of humidity control system of down sorting machine, it comprises: main air blower, PLC programmable logic controller (PLC), humidity sensor and several utility boxs is characterized in that: this moisture control system has steam gatherer, humidity sensor and based on the automatic humidity control of PLC.
Described steam gatherer is at the down-sorting machine air inlet jet chimney to be arranged, and by pipeline steam is imported in the classifier, and there is the import volume of electronic control valve control steam at the pipeline tapping place.
Described humidity sensor is that down-sorting machine has several utility boxs, all is equipped with humidity sensor in each utility box, can obtain air humidity in the current utility box in real time, and data are fed back to PLC.
Described automatic humidity control based on PLC is after having set the target humidity value, PLC obtains air humidity the current down-sorting machine from humidity sensor, data according to humidity sensor, PLC judges present duty, humidity miss the mark value just strengthens the steam import volume by the electronic control valve, otherwise just reduces steam import volume even steam off importing.
Advantage of the present invention is: this moisture control system utilizes the humidity sensor in the utility box can obtain air humidity in the current utility box in real time, and data are fed back to PLC, PLC controls the air humidity in the classifier in the eider down classification production run automatically, eliminated eider down and divided time-like to produce the adsorption phenomena that static causes, in the quality that promotes the finished product eider down, improved the production efficiency of eider down because of friction.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is a PLC control circuit synoptic diagram;
Embodiment
A kind of humidity control system of down sorting machine, it comprises: main air blower, PLC programmable logic controller (PLC), humidity sensor and several utility boxs, this moisture control system have steam gatherer, humidity sensor and based on the automatic humidity control of PLC.
Described steam gatherer is at the down-sorting machine air inlet jet chimney to be arranged, by pipeline steam is imported in the classifier, because the principle of negative pressure air draught, steam meeting and raw material are inhaled in the classifier together, because the air humidity in the eider down classification production run in the classifier, having eliminated eider down divides time-like to produce the adsorption phenomena that static causes because of friction, when the electronic control valve is in closed condition, steam can't enter in the classifier, while electronic control valve comes the steam regulation import volume according to control information size.
Described humidity sensor is that down-sorting machine has several utility boxs, all is equipped with humidity sensor in each utility box, can obtain air humidity in the current utility box in real time, and data are fed back to PLC.
Described automatic humidity control based on PLC is after having set the target humidity value, PLC obtains air humidity the current down-sorting machine from humidity sensor, data according to humidity sensor, PLC judges present duty, humidity miss the mark value just strengthens the steam import volume by the electronic control valve, otherwise just reduces steam import volume even steam off importing.
Owing in each utility box, all placed humidity sensor, be M so establish value of feedback
i(i=1 ..., 6), i has represented from nearest No. 1 utility box of distance air inlet to distance air inlet No. 6 utility boxs farthest here, and its humidity mean value is M.
Its principle of work is: obtain humidity value M in current each utility box by humidity sensor
iAccording to M
iGet up till now humidity mean value M and humidity standard difference S.
If the target humidity value is M
d, be limited to S on the humidity standard difference
Max, M and M
dBe limited to D on the absolute difference.Discuss with regard to following several situations so:
M 〉=M
dAnd S 〉=S
MaxNeed comparison M in the case
dAnd M
1Size.If M
d〉=M
1, illustrate that so though humidity mean value is higher, begun deficiency apart from humidity in the nearer utility box of air inlet, and each utility box humidity difference is big.So must slightly improve the steam import volume; Otherwise, illustrate that then the amount that imports steam in the short time is too big, too high apart from humidity in the nearer utility box of air inlet, need significantly reduce the steam import volume.
M 〉=M
dAnd S＜S
Max, illustrate that present moisture distribution is comparatively even, and arrived the target humidity value.If M and M
dThe absolute value of difference is smaller or equal to D, and it is constant to keep present steam import volume so; Otherwise then slightly reduce the steam import volume.
M＜M
dAnd S 〉=S
Max, need comparison M in the case
dAnd M
1Size.If M
d〉=M
1, illustrate that so humidity is obviously not enough, must significantly improve the steam import volume; Otherwise, illustrate that then the amount that imports steam in the short time is too big, too high apart from humidity in the nearer utility box of air inlet, need slightly to reduce the steam import volume.
M＜M
dAnd S＜S
Max, illustrate that overall humidity is all on the low side in the present classifier, need significantly improve the steam import volume.
Claims (1)
1. humidity control system of down sorting machine, it comprises: main air blower, PLC programmable logic controller (PLC), humidity sensor and several utility boxs is characterized in that: this moisture control system has steam gatherer, humidity sensor and based on the automatic humidity control of PLC; Described steam gatherer is at the down-sorting machine air inlet jet chimney to be arranged, and by pipeline steam is imported in the classifier, and there is the import volume of electronic control valve control steam at the pipeline tapping place; Described humidity sensor is that down-sorting machine has several utility boxs, all is equipped with humidity sensor in each utility box, can obtain air humidity in the current utility box in real time, and data are fed back to PLC; Described automatic humidity control based on PLC is after having set the target humidity value, PLC obtains air humidity the current down-sorting machine from humidity sensor, data according to humidity sensor, PLC judges present duty, humidity miss the mark value just strengthens the steam import volume by the electronic control valve, otherwise just reduces steam import volume even steam off importing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100247304A CN101482756B (en) | 2009-02-12 | 2009-02-12 | Humidity control system of down sorting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100247304A CN101482756B (en) | 2009-02-12 | 2009-02-12 | Humidity control system of down sorting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101482756A CN101482756A (en) | 2009-07-15 |
| CN101482756B true CN101482756B (en) | 2010-12-29 |
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ID=40879903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100247304A Expired - Fee Related CN101482756B (en) | 2009-02-12 | 2009-02-12 | Humidity control system of down sorting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101482756B (en) |
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2009
- 2009-02-12 CN CN2009100247304A patent/CN101482756B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101482756A (en) | 2009-07-15 |
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