CN102445069A - Drying roller control method, device and system and drying device - Google Patents
Drying roller control method, device and system and drying device Download PDFInfo
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- CN102445069A CN102445069A CN2011104128072A CN201110412807A CN102445069A CN 102445069 A CN102445069 A CN 102445069A CN 2011104128072 A CN2011104128072 A CN 2011104128072A CN 201110412807 A CN201110412807 A CN 201110412807A CN 102445069 A CN102445069 A CN 102445069A
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- 238000001035 drying Methods 0.000 title claims abstract description 238
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000004576 sand Substances 0.000 claims abstract description 96
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 230000000052 comparative effect Effects 0.000 claims description 49
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 101100041681 Takifugu rubripes sand gene Proteins 0.000 description 88
- 239000002817 coal dust Substances 0.000 description 8
- 239000004744 fabric Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Abstract
The invention discloses a drying roller control method, drying roller control equipment, a drying roller control system and drying equipment. The drying roller control method comprises the following steps: receiving a signal representative of the moisture content of the sand in the drying drum and outputting a moisture content value; comparing the water content value with a given threshold value and outputting a water content comparison result; controlling the rotating speed of the drying drum to increase or decrease according to the water content comparison result, and controlling the rotating speed of the drying drum to decrease when the water content value is greater than a given threshold value; and when the moisture content value is less than or equal to a given threshold value, controlling the rotating speed of the drying drum to increase. Therefore, the water content of the sand can be adjusted, the adjustment response speed is high, the sand can be effectively dried, the production efficiency is improved, and meanwhile, the energy is effectively utilized.
Description
Technical field
The present invention relates to a kind of drying roller control method, equipment, system and drying plant.
Background technology
In the dry powder and mortar production process, very important of the drying course of sand, the drying course of sand is mainly judged through moisture content.How to make the water content of sand within desirable scope; This is the major tasks of control, mainly utilizes drying roller to carry out the oven dry of sand at present, in cylinder, is blown into hot gas through combusting coal fines and keeps the temperature in the cylinder; Sand just is heated in cylinder, and moisture obtains evaporation.The speed of cylinder is certain, and the time of sand heat of accepting in cylinder is just certain.
At present, normally decide the addition of coal dust through the water content that detects the sand export sand.If find that the dry sand water content is higher, then strengthen the input of coal dust, thereby improve the heat of hot gas in the drying roller, if the dry sand water content is very low, then suitably reduce the input amount of coal dust, thereby reduce the temperature of hot gas in the cylinder.
Yet scheme of the prior art arrives variation of temperature again from detecting the input that increases or reduce coal dust that changes to of sand water content; Need long time; The governing response process is slower, can not control the sand water content quickly and efficiently, and the sand drying effect is bad.
Summary of the invention
The purpose of this invention is to provide a kind of drying roller control method, equipment, system and drying plant,, sand is dried effectively to be used to control the water content of sand in the drying roller.
To achieve these goals, the present invention provides a kind of drying roller control method, and this method comprises: receive the signal of representing the sand water content in the drying roller, and the output moisture content value; Relatively this moisture content value and given threshold value, and output water content comparative result; Increase or reduce according to the rotating speed of said water content comparative result control drying roller, when said moisture content value during greater than given threshold value, the rotating speed of control drying roller reduces; When said moisture content value was less than or equal to given threshold value, the rotating speed of control drying roller increased.
The present invention also provides a kind of drying roller control appliance; Wherein, This equipment comprises water content receiving system, water content comparison means and first output device, and said water content receiving system receives the signal of representing the sand water content in the drying roller, and the output moisture content value; Said water content comparison means receives said moisture content value, relatively this moisture content value and given threshold value, and to said first output device output water content comparative result; Said first output device is according to the rotating speed increase of said water content comparative result output control drying roller or the control signal that reduces; When said moisture content value during greater than given threshold value, the control signal that the rotating speed of said first output device output control drying roller reduces; When said moisture content value is less than or equal to given threshold value, the control signal that the rotating speed of said first output device output control drying roller increases.
The present invention also provides a kind of drying roller to control system; This drying roller control system comprises above-mentioned drying roller control appliance, moisture determination device and first frequency converter; Said drying roller control appliance is electrically connected with said moisture determination device and said frequency converter; Said moisture determination device sends to the water content receiving system in the said drying roller control appliance with the signal of the sand water content in the detected representative drying roller; Said first output device is according to the frequency increase of said first frequency converter of said water content comparative result output control or the control signal that reduces; When said moisture content value during greater than given threshold value; The control signal that the frequency of said first frequency converter of said first output device output control reduces, the control signal that the rotating speed that said first frequency converter is controlled drying roller according to this control signal output reduces; When said moisture content value is less than or equal to given threshold value; The control signal that the frequency of said first frequency converter of said first output device output control increases, the control signal that the rotating speed that said first frequency converter is controlled drying roller according to this control signal output increases.
The present invention also provides a kind of drying plant, and this drying plant comprises above-mentioned drying roller control system, drying roller and feeder.
Pass through technique scheme; Can regulate the time of staying of sand in drying roller through the rotating speed of regulating drying roller, the heated time of sand changes, thus the water content that can regulate sand; Governing response speed is fast; Can dry sand effectively, improve production efficiency, also effectively utilize the energy simultaneously.
Other features and advantages of the present invention will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with the following specific embodiment, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a block diagram of controlling system according to drying roller of the present invention.
The specific embodiment
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.Should be understood that the specific embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
The applicant recognizes, except the input amount of control coal dust in prior art to change the temperature in the drying roller, control beyond the water content of sand, can also control the water content of sand through change the time that sand stops in drying roller.Displacement and speed and time relation such as following formula institute is not:
Displacement=speed * time
Because the stroke of sand in drying roller is constant,, then can change the speed of sand walking if change the drying time of sand in drying roller.And the speed of sand is directly proportional with the rotating speed of drying roller, and the rotating speed of drying roller is fast more, and the translational speed of sand is also just fast more.
Through above-mentioned analysis, the invention provides a kind of drying roller control method, this method comprises: receive the signal of representing the sand water content in the drying roller, and the output moisture content value; Relatively this moisture content value and given threshold value, and output water content comparative result; Increase or reduce according to the rotating speed of said water content comparative result control drying roller, when said moisture content value during greater than given threshold value, the rotating speed of control drying roller reduces; When said moisture content value was less than or equal to given threshold value, the rotating speed of control drying roller increased.
Wherein, when said moisture content value during greater than given threshold value, the rotating speed of control drying roller reduces; Like this; The speed of travel of sand in drying roller reduces, and makes that the time of staying of sand in drying roller is elongated, and heated time is elongated; Thereby make the moisture in the sand evaporate more fully, the sand water content will reduce.When said moisture content value during less than given threshold value, the rotating speed of control drying roller increases, and like this, the speed of travel of sand in drying roller increases.As long as moisture content value just meets the demands less than the water content of given threshold value sand; If crossing, the sand speed of travel can make on the contrary that slowly the sand drying efficiency is low excessively; And waste energy; Increase the speed of travel that improves sand through the rotating speed that makes drying roller like this, can apace sand be dried by height, improved operating efficiency.
When controlling the sand water content, can also further regulate coal-supplying amount, effectively to regulate the sand water content more rapidly through the rotating speed of control drying roller.Thereby according to a kind of preferred real-time mode, this method also comprises: increase or reduce according to the coal-supplying amount of said water content comparative result control feeder, when said moisture content value during greater than given threshold value, the coal-supplying amount of control feeder increases; When said moisture content value was less than or equal to given threshold value, the coal-supplying amount of control feeder reduced.
Wherein,, can also increase the coal-supplying amount of feeder, make that the temperature in the drying roller increases, thereby quickly the moisture in the sand is evaporated, reduce the sand water content when said moisture content value during greater than given threshold value.When said moisture content value during, can also reduce the coal-supplying amount of feeder less than given threshold value.As long as moisture content value is less than given threshold value, the water content of sand just meets the demands, if still the very high temperature of usefulness is dried sand then can be caused waste to the coal dust that drops into, thus can reduce the coal-supplying amount of feeder, with energy savings.
For the too high and feasible dustproof cloth bag burning of the exhaust temperature that prevents drying roller, cause danger, can also monitor the temperature in the drying roller.According to a kind of preferred implementation, this method also comprises: receive the signal of representing the temperature in the drying roller, and the output temperature value; Relatively this temperature value and given threshold value, and output temperature comparative result; If said temperature comparative result be said temperature value greater than given threshold value, the coal-supplying amount of then controlling feeder reduces.Thereby, when the temperature in the drying roller is too high, can lower the temperature in the drying roller through reducing the coal-supplying amount of feeder.
According to a kind of preferred implementation, both can increase according to the coal-supplying amount of said water content comparative result control feeder or reduce, can reduce according to the coal-supplying amount that said temperature comparative result is controlled feeder again.In this case, said moisture content value might occur, need the coal-supplying amount of control feeder to increase greater than given threshold value; Temperature in the drying roller is too high again simultaneously; Need the coal-supplying amount of control feeder to reduce, in this case, preferred coal-supplying amount according to said temperature comparative result control feeder is reduced; With the too high and feasible dustproof cloth bag burning of the exhaust temperature of avoiding drying roller, prevent to cause danger.
Preferably, said drying roller control method can also comprise when said drying roller starts, control said drying roller low cruise; After said drying roller starts, control said drying roller high-speed cruising.
The present invention also provides a kind of drying roller control appliance; With reference to figure 1; This equipment comprises water content receiving system, water content comparison means and first output device, and said water content receiving system receives the signal of representing the sand water content in the drying roller, and the output moisture content value; Said water content comparison means receives said moisture content value, relatively this moisture content value and given threshold value, and to said first output device output water content comparative result; Said first output device is according to the rotating speed increase of said water content comparative result output control drying roller or the control signal that reduces; When said moisture content value during greater than given threshold value, the control signal that the rotating speed of said first output device output control drying roller reduces; When said moisture content value is less than or equal to given threshold value, the control signal that the rotating speed of said first output device output control drying roller increases.
Wherein, when said moisture content value during greater than given threshold value, first output device output control signal is so that the rotating speed of drying roller reduces; Like this; The speed of travel of sand in drying roller reduces, and makes that the time of staying of sand in drying roller is elongated, and heated time is elongated; Thereby make the moisture in the sand evaporate more fully, the sand water content will reduce.When said moisture content value during less than given threshold value, first output device output control signal is so that the rotating speed of drying roller increases, and like this, the speed of travel of sand in drying roller increases.As long as moisture content value just meets the demands less than the water content of given threshold value sand; If crossing, the sand speed of travel can make on the contrary that slowly the sand drying efficiency is low excessively; And waste energy; Increase the speed of travel that improves sand through the rotating speed that makes drying roller like this, can apace sand be dried by height, improved operating efficiency.
Preferably, when said drying roller starts, the control signal of the said drying roller low cruise of said first output device output control; After said drying roller starts, the control signal of the said drying roller high-speed cruising of said first output device output control.Like this, when drying roller starts, can reduce of the impact of the electric motor starting of drying roller, also can reduce starting current simultaneously, reduce the infringement of start-up course the motor of drying roller so that drying roller low speed slowly starts to electrical network.And after drying roller starts, can so that the drying roller fast rotational sand is dried.
When controlling the sand water content, can also further regulate coal-supplying amount, effectively to regulate the sand water content more rapidly through the rotating speed of control drying roller.Thereby; According to a kind of preferred real-time mode; This drying roller control appliance can also comprise second output device; The control signal that said second output device increases or reduces according to the coal-supplying amount of said water content comparative result output control feeder, when said moisture content value during greater than given threshold value, the control signal that the coal-supplying amount of said second output device output control feeder increases; When said moisture content value is less than or equal to given threshold value, the control signal that the coal-supplying amount of said second output device output control feeder reduces.
Wherein, When said moisture content value during, can also make that the temperature in the drying roller increases by second output device output control signal to increase the coal-supplying amount of feeder greater than given threshold value; Thereby quickly the moisture in the sand is evaporated, reduce the sand water content.When said moisture content value during less than given threshold value, can also be by second output device output control signal to reduce the coal-supplying amount of feeder.As long as moisture content value is less than given threshold value, the water content of sand just meets the demands, if still the very high temperature of usefulness is dried sand then can be caused waste to the coal dust that drops into, thus can reduce the coal-supplying amount of feeder, with energy savings.
For the too high and feasible dustproof cloth bag burning of the exhaust temperature that prevents drying roller, cause danger, can also monitor the temperature in the drying roller.According to a kind of preferred implementation, said drying roller control appliance can also comprise temperature receiving system and the temperature comparison means and second output device, and said temperature receiving system receives the signal of representing the temperature in the drying roller, and the output temperature value; Said temperature comparison means receives said temperature value, relatively this temperature value and given threshold value, and to the said second output device output temperature comparative result; The control signal that the coal-supplying amount of output control feeder reduced when said second output device received said temperature value greater than the temperature comparative result of given threshold value.Thereby, when the temperature in the drying roller is too high, can lower the temperature in the drying roller through reducing the coal-supplying amount of feeder.
According to preferred embodiment a kind of; The control signal that said second output device can be both increases or reduces according to the coal-supplying amount of said water content comparative result output control feeder can be exported the control signal that the coal-supplying amount of control feeder reduces according to said temperature comparative result again.In this case; Said moisture content value might appear greater than given threshold value; Said second output device need be exported the control signal that the coal-supplying amount of control feeder increases, and the temperature in the drying roller is too high again simultaneously, and said second output device need be exported the control signal that the coal-supplying amount of control feeder reduces; In this case; The control signal that the coal-supplying amount that said second output device will preferably be controlled feeder according to said temperature comparative result output reduces with the too high and feasible dustproof cloth bag burning of the exhaust temperature of avoiding drying roller, prevents to cause danger.
The present invention also provides a kind of drying roller to control system; With reference to figure 1; This drying roller control system comprises foregoing drying roller control appliance, moisture determination device and first frequency converter; Said drying roller control appliance is electrically connected with said moisture determination device and said first frequency converter; Said moisture determination device sends to the water content receiving system in the said drying roller control appliance with the signal of the sand water content in the detected representative drying roller; Said first output device is according to the frequency increase of said first frequency converter of said water content comparative result output control or the control signal that reduces; When said moisture content value during, the control signal that the frequency of said first frequency converter of said first output device output control reduces greater than given threshold value, the control signal that said first frequency converter reduces according to the rotating speed of this control signal output control drying roller; When said moisture content value is less than or equal to given threshold value; The control signal that the frequency of said first frequency converter of said first output device output control increases, the control signal that the rotating speed that said first frequency converter is controlled drying roller according to this control signal output increases.
Drying roller provided by the invention is controlled system can detect the sand water content in the drying roller through the moisture determination device, and adopts the speed of converter technique control drying roller.Wherein, when said moisture content value during greater than given threshold value, the control signal that first output device reduces to the said first frequency converter output frequency; First frequency converter drives the motor of drying roller so that the rotating speed of drying roller reduces, and like this, the speed of travel of sand in drying roller reduces; Make that the time of staying of sand in drying roller is elongated; Heated time is elongated, thereby makes the moisture in the sand evaporate more fully, and the sand water content will reduce.When said moisture content value during less than given threshold value; The control signal that first output device increases to the said first frequency converter output frequency; First frequency converter drives the motor of drying roller so that the rotating speed of drying roller increases, and like this, the speed of travel of sand in drying roller increases.As long as moisture content value just meets the demands less than the water content of given threshold value sand; If crossing, the sand speed of travel can make on the contrary that slowly the sand drying efficiency is low excessively; And waste energy; Increase the speed of travel that improves sand through the rotating speed that makes drying roller like this, can apace sand be dried by height, improved operating efficiency.
Preferably, when said drying roller starts, the control signal of said first converter low-frequency operation of said first output device output control, said first frequency converter is according to the control signal of this control signal output control drying roller low cruise; After said drying roller starts, the control signal of the said first frequency converter high frequency operation of said first output device output control, said first frequency converter is according to the control signal of this control signal output control drying roller high-speed cruising.Like this; When drying roller starts, can under the low frequency situation, drive the motor of drying roller, make drying roller slowly start by first frequency converter; Start drying roller through first converter low-frequency; Can reduce of the impact of the electric motor starting of drying roller, also can reduce starting current simultaneously, reduce the infringement of start-up course the motor of drying roller to electrical network.And after drying roller started, first frequency converter can get into the high frequency running status, made the drying roller fast rotational, and sand is dried.
When controlling the sand water content, can also further regulate coal-supplying amount, effectively to regulate the sand water content more rapidly through the rotating speed of control drying roller.Thereby; According to a kind of preferred real-time mode; Also comprise under the situation of second output device at said drying roller control appliance; This drying roller control system can also comprise second frequency converter, and drying roller control appliance recited above is electrically connected with said second frequency converter, and said second output device is according to the frequency increase of said second frequency converter of said water content comparative result output control or the control signal that reduces; The control signal of the speed of said second frequency converter output control feeder; When said moisture content value during, the control signal that the frequency of said second frequency converter of said second output device output control increases greater than given threshold value, the control signal that said second frequency converter increases according to the speed of this control signal output control feeder; When said moisture content value is less than or equal to given threshold value, the control signal that the frequency of said second frequency converter of said second output device output control reduces, said second frequency converter is according to the control signal of the speed increase of this control signal output control feeder.
Thus, can adopt the speed of converter technique control feeder.When said moisture content value during greater than given threshold value; Can also be by second output device output control signal to increase the frequency of second frequency converter; Thereby second frequency converter drives the motor of feeder so that the speed of feeder increases, and increases coal-supplying amount, makes that the temperature in the drying roller increases; Thereby quickly the moisture in the sand is evaporated, reduce the sand water content.When said moisture content value during less than given threshold value, can also be by second output device output control signal reducing the frequency of second frequency converter, thus second frequency converter drives the motor of feeder so that the speed of feeder reduces, and reduces coal-supplying amount.As long as moisture content value is less than given threshold value, the water content of sand just meets the demands, if still the very high temperature of usefulness is dried sand then can be caused waste to the coal dust that drops into, thus can reduce the coal-supplying amount of feeder, with energy savings.
For the too high and feasible dustproof cloth bag burning of the exhaust temperature that prevents drying roller, cause danger, can also monitor the temperature in the drying roller.According to a kind of preferred implementation; Comprise at said drying roller control appliance under the situation of temperature receiving system and the temperature comparison means and second output device; This drying roller control system can also comprise temperature sensor, and said temperature sensor sends to the temperature receiving system in the said drying roller control appliance with the signal of the temperature in the detected drying roller.Thereby, when the temperature in the drying roller is too high, can lower the temperature in the drying roller through reducing the coal-supplying amount of feeder.
According to preferred embodiment a kind of; The control signal that said second output device can be both increases or reduces according to the coal-supplying amount of said water content comparative result output control feeder can be exported the control signal that the coal-supplying amount of control feeder reduces according to said temperature comparative result again.In this case; Said moisture content value might appear greater than given threshold value; Said second output device need be exported the control signal that the coal-supplying amount of control feeder increases, and the temperature in the drying roller is too high again simultaneously, and said second output device need be exported the control signal that the coal-supplying amount of control feeder reduces; In this case; The control signal that the coal-supplying amount that said second output device will preferably be controlled feeder according to said temperature comparative result output reduces with the too high and feasible dustproof cloth bag burning of the exhaust temperature of avoiding drying roller, prevents to cause danger.
Pass through technique scheme; Can regulate the time of staying of sand in drying roller through the rotating speed of regulating drying roller, the heated time of sand changes, thus the water content that can regulate sand; Governing response speed is fast; Can dry sand effectively, improve production efficiency, also effectively utilize the energy simultaneously.
Simultaneously, the present invention also provides a kind of drying plant, and this drying plant comprises aforementioned drying roller control system, drying roller and feeder.
More than combine accompanying drawing to describe preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned embodiment; In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention equally.
Claims (15)
1. drying roller control method, this method comprises:
Receive the signal of representing the sand water content in the drying roller, and the output moisture content value;
Relatively this moisture content value and given threshold value, and output water content comparative result;
Increase or reduce according to the rotating speed of said water content comparative result control drying roller,
When said moisture content value during greater than given threshold value, the rotating speed of control drying roller reduces;
When said moisture content value was less than or equal to given threshold value, the rotating speed of control drying roller increased.
2. drying roller control method according to claim 1, this method also comprises:
Increase or reduce according to the coal-supplying amount of said water content comparative result control feeder,
When said moisture content value during greater than given threshold value, the coal-supplying amount of control feeder increases;
When said moisture content value was less than or equal to given threshold value, the coal-supplying amount of control feeder reduced.
3. drying roller control method according to claim 1, this method also comprises:
Receive the signal of representing the temperature in the drying roller, and the output temperature value;
Relatively this temperature value and given threshold value, and output temperature comparative result;
If said temperature comparative result be said temperature value greater than given threshold value, the coal-supplying amount of then controlling feeder reduces.
4. drying roller control method according to claim 2, this method also comprises:
Receive the signal of representing the temperature in the drying roller, and the output temperature value;
Relatively this temperature value and given threshold value;
If said temperature comparative result be said temperature value greater than given threshold value, the coal-supplying amount of then controlling feeder reduces,
Wherein make when feeder controlled on the contrary when said water content comparative result and temperature comparative result, then according to the coal-supplying amount of said temperature comparative result control feeder.
5. according to the described drying roller control method of each claim among the claim 1-4, this method also comprises:
When said drying roller starts, control said drying roller low cruise; After said drying roller starts, control said drying roller high-speed cruising.
6. drying roller control appliance, wherein, this equipment comprises water content receiving system, water content comparison means and first output device,
Said water content receiving system receives the signal of representing the sand water content in the drying roller, and the output moisture content value;
Said water content comparison means receives said moisture content value, relatively this moisture content value and given threshold value, and to said first output device output water content comparative result;
The control signal that the rotating speed that said first output device is controlled drying roller according to said water content comparative result output increases or reduces,
When said moisture content value during greater than given threshold value, the control signal that the rotating speed of said first output device output control drying roller reduces;
When said moisture content value is less than or equal to given threshold value, the control signal that the rotating speed of said first output device output control drying roller increases.
7. drying roller control appliance according to claim 1, wherein, this drying roller control appliance also comprises second output device,
The control signal that the coal-supplying amount that said second output device is controlled feeder according to said water content comparative result output increases or reduces,
When said moisture content value during greater than given threshold value, the control signal that the coal-supplying amount of said second output device output control feeder increases;
When said moisture content value is less than or equal to given threshold value, the control signal that the coal-supplying amount of said second output device output control feeder reduces.
8. drying roller control appliance according to claim 1, wherein, this drying roller control appliance also comprises temperature receiving system, temperature comparison means and second output device,
Said temperature receiving system receives the signal of representing the temperature in the drying roller, and the output temperature value;
Said temperature comparison means receives said temperature value, relatively this temperature value and given threshold value, and to the said second output device output temperature comparative result;
The control signal that the coal-supplying amount of output control feeder reduced when said second output device received said temperature value greater than the temperature comparative result of given threshold value.
9. drying roller control appliance according to claim 7, wherein, this drying roller control appliance also comprises temperature receiving system and temperature comparison means,
Said temperature receiving system receives the signal of representing the temperature in the drying roller, and the output temperature value;
Said temperature comparison means receives said temperature value, relatively this temperature value and given threshold value, and to the said second output device output temperature comparative result,
The control signal that the coal-supplying amount of output control feeder reduced when said second output device received said temperature value greater than the temperature comparative result of given threshold value,
Wherein when said water content comparative result and temperature comparative result made the opposite control signal of said second output device output, said second output device was according to said temperature comparative result output control signal.
10. according to the described drying roller control appliance of each claim among the claim 6-9, wherein,
When said drying roller starts, the control signal of the said drying roller low cruise of said first output device output control; After said drying roller starts, the control signal of the said drying roller high-speed cruising of said first output device output control.
11. drying roller control system; This drying roller control system comprises drying roller control appliance according to claim 6, moisture determination device and first frequency converter; Said drying roller control appliance is electrically connected with said moisture determination device and said first frequency converter
Said moisture determination device sends to the water content receiving system in the said drying roller control appliance with the signal of the sand water content in the detected representative drying roller,
The control signal that the frequency that said first output device is controlled said first frequency converter according to said water content comparative result output increases or reduces,
When said moisture content value during, the control signal that the frequency of said first frequency converter of said first output device output control reduces greater than given threshold value, the control signal that said first frequency converter reduces according to the rotating speed of this control signal output control drying roller;
When said moisture content value is less than or equal to given threshold value; The control signal that the frequency of said first frequency converter of said first output device output control increases, the control signal that the rotating speed that said first frequency converter is controlled drying roller according to this control signal output increases.
12. drying roller control system; Wherein, This drying roller control system comprises drying roller control appliance according to claim 7, moisture determination device and first frequency converter, and said drying roller control appliance is electrically connected with said moisture determination device and said first frequency converter
Said moisture determination device sends to the water content receiving system in the said drying roller control appliance with the signal of the sand water content in the detected representative drying roller,
The control signal that the frequency that said first output device is controlled said first frequency converter according to said water content comparative result output increases or reduces,
When said moisture content value during, the control signal that the frequency of said first frequency converter of said first output device output control reduces greater than given threshold value, the control signal that said first frequency converter reduces according to the rotating speed of this control signal output control drying roller;
When said moisture content value is less than or equal to given threshold value; The control signal that the frequency of said first frequency converter of said first output device output control increases, the control signal that the rotating speed that said first frequency converter is controlled drying roller according to this control signal output increases;
This drying roller control system also comprises second frequency converter; Said drying roller control appliance is electrically connected with said second frequency converter; Said second output device is according to the frequency increase of said second frequency converter of said water content comparative result output control or the control signal that reduces; The control signal of the speed of said second frequency converter output control feeder
When said moisture content value during, the control signal that the frequency of said second frequency converter of said second output device output control increases greater than given threshold value, the control signal that said second frequency converter increases according to the speed of this control signal output control feeder;
When said moisture content value is less than or equal to given threshold value, the control signal that the frequency of said second frequency converter of said second output device output control reduces, said second frequency converter is according to the control signal of the speed increase of this control signal output control feeder.
13. drying roller control system; Wherein, This drying roller control system comprises according to Claim 8 or 9 described drying roller control appliances, moisture determination device and first frequency converter; Said drying roller control appliance is electrically connected with said moisture determination device and said first frequency converter
Said moisture determination device sends to the water content receiving system in the said drying roller control appliance with the signal of the sand water content in the detected representative drying roller,
The control signal that the frequency that said first output device is controlled said first frequency converter according to said water content comparative result output increases or reduces,
When said moisture content value during, the control signal that the frequency of said first frequency converter of said first output device output control reduces greater than given threshold value, the control signal that said first frequency converter reduces according to the rotating speed of this control signal output control drying roller;
When said moisture content value is less than or equal to given threshold value; The control signal that the frequency of said first frequency converter of said first output device output control increases, the control signal that the rotating speed that said first frequency converter is controlled drying roller according to this control signal output increases;
This drying roller control system also comprises temperature sensor, and said temperature sensor sends to the temperature receiving system in the said drying roller control appliance with the signal of the temperature in the detected drying roller.
14. according to the described drying roller control of each claim among claim 11-13 system, wherein,
When said drying roller starts, the control signal of said first converter low-frequency operation of said first output device output control, said first frequency converter is according to the control signal of this control signal output control drying roller low cruise;
After said drying roller starts, the control signal of the said first frequency converter high frequency operation of said first output device output control, said first frequency converter is according to the control signal of this control signal output control drying roller high-speed cruising.
15. a drying plant, this drying plant comprise according to each described drying roller control system, drying roller and feeder among the claim 11-13.
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