CN102445069B - 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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- CN102445069B CN102445069B CN 201110412807 CN201110412807A CN102445069B CN 102445069 B CN102445069 B CN 102445069B CN 201110412807 CN201110412807 CN 201110412807 CN 201110412807 A CN201110412807 A CN 201110412807A CN 102445069 B CN102445069 B CN 102445069B
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- 238000001035 drying Methods 0.000 title claims abstract description 227
- 238000000034 method Methods 0.000 title claims abstract description 22
- 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 46
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 101100041681 Takifugu rubripes sand gene Proteins 0.000 description 88
- 230000001276 controlling effect Effects 0.000 description 26
- 239000002817 coal dust Substances 0.000 description 8
- 239000004744 fabric Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 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
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 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 by moisture content.How to make the water content of sand within desirable scope, this is the major tasks of controlling, and mainly utilizes drying roller to carry out the oven dry of sand at present, by combusting coal fines, to being blown into hot gas in cylinder, maintains the temperature in cylinder, sand just is heated in cylinder, and moisture is evaporated.The speed of cylinder is certain, and the time of sand heat of accepting in cylinder is namely certain.
At present, normally by the water content that detects the sand export sand, decide the addition of coal dust.If find that the dry sand water content is higher, strengthen the input of coal dust, thereby improve the heat of hot gas in drying roller, if the dry sand water content is very low, suitably reduce the input amount of coal dust, thereby reduce the temperature of hot gas in cylinder.
Yet scheme of the prior art is from the input that increases or reduce coal dust that changes to of sand water content being detected, then the variation of arriving temperature, need long time, the governing response process is slower, can not control quickly and efficiently the sand water content, 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, with for controlling the water content of sand in drying roller, sand is dried effectively.
To achieve these goals, the invention provides a kind of drying roller control method, the method comprises: receive the signal that represents the sand water content in drying roller, and the output moisture content value; Relatively this moisture content value and given threshold value, and output water content comparative result; The rotating speed of controlling drying roller according to described water content comparative result increases or reduces, and when described moisture content value is greater than given threshold value, the rotating speed of controlling drying roller reduces; When described moisture content value is less than or equal to given threshold value, the rotating speed of controlling drying roller increases.
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 the first output device, and described water content receiving system receives the signal that represents the sand water content in drying roller, and the output moisture content value; Described water content comparison means receives described moisture content value, relatively this moisture content value and given threshold value, and to described the first output device output water content comparative result; The control signal that the rotating speed that described the first output device is controlled drying roller according to described water content comparative result output increases or reduces, when described moisture content value is greater than given threshold value, the control signal that the rotating speed that drying roller is controlled in described the first output device output reduces; When described moisture content value is less than or equal to given threshold value, the control signal that the rotating speed that drying roller is controlled in described the first output device output increases.
The present invention also provides a kind of drying roller control system, this drying roller control system comprises above-mentioned drying roller control appliance, moisture determination device and the first frequency converter, described drying roller control appliance is electrically connected to described moisture determination device and described frequency converter, the signal that represents the sand water content in drying roller that described moisture determination device will detect sends to the water content receiving system in described drying roller control appliance, the control signal that the frequency that described the first output device is controlled described the first frequency converter according to described water content comparative result output increases or reduces, when described moisture content value is greater than given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output reduces, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output reduces, when described moisture content value is less than or equal to given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output increases, the control signal that the rotating speed that described the 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 by the rotating speed of regulating drying roller, the heated time of sand changes, thereby can regulate the water content of sand, governing response speed is fast, can effectively dry sand, improve production efficiency, also effectively utilize the energy simultaneously.
Other features and advantages of the present invention will partly be described in detail in the specific embodiment subsequently.
The accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms the part of specification, is used from explanation the present invention with the following specific embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the block diagram according to drying roller control system of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
The applicant recognizes, except the input amount of controlling coal dust as in prior art, to change the temperature in drying roller, controls beyond the water content of sand, the time that can also stop in drying roller by changing sand, controls the water content of sand.The relation of displacement and speed and time as following formula institute not:
Displacement=speed * time
Because the stroke of sand in drying roller is constant, if change the drying time of sand in drying roller, can change the speed of sand walking.And the speed of sand is directly proportional to the rotating speed of drying roller, the rotating speed of drying roller is faster, and the translational speed of sand is also just faster.
By above-mentioned analysis, the invention provides a kind of drying roller control method, the method comprises: receive the signal that represents the sand water content in drying roller, and the output moisture content value; Relatively this moisture content value and given threshold value, and output water content comparative result; The rotating speed of controlling drying roller according to described water content comparative result increases or reduces, and when described moisture content value is greater than given threshold value, the rotating speed of controlling drying roller reduces; When described moisture content value is less than or equal to given threshold value, the rotating speed of controlling drying roller increases.
Wherein, when described moisture content value is greater than given threshold value, the rotating speed of controlling drying roller reduces, like this, the speed of travel of sand in drying roller reduces, and makes the time of staying of sand in drying roller elongated, and heated time is elongated, thereby make the moisture in sand evaporate more fully, the sand water content will reduce.When described moisture content value is less than given threshold value, the rotating speed of controlling drying roller increases, and like this, the speed of travel of sand in drying roller increases.As long as moisture content value is less than the water content of given threshold value sand and just meets the demands, if crossing, the sand speed of travel can make on the contrary slowly the sand drying efficiency too low, and waste energy, increase to improve like this speed of travel of sand by the rotating speed that makes drying roller, can rapidly sand be dried by height, improved operating efficiency.
When the rotating speed by controlling drying roller is controlled the sand water content, can also further regulate coal-supplying amount, effectively to regulate more rapidly the sand water content.Thereby, according to a kind of preferred real-time mode, the method also comprises: the coal-supplying amount of controlling feeder according to described water content comparative result increases or reduces, and when described moisture content value is greater than given threshold value, the coal-supplying amount of controlling feeder increases; When described moisture content value is less than or equal to given threshold value, the coal-supplying amount of controlling feeder reduces.
Wherein, when described moisture content value is greater than given threshold value, can also increase the coal-supplying amount of feeder, make the temperature in drying roller increase, thereby quickly the moisture in sand is evaporated, reduce the sand water content.When described moisture content value is less than given threshold value, can also 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 by very high temperature, sand dried can be caused waste to the coal dust dropped into, thus can reduce the coal-supplying amount of feeder, to save the energy.
Make the dustproof cloth bag burning for the exhaust temperature that prevents drying roller is too high, cause danger, can also monitor the temperature in drying roller.According to a kind of preferred embodiment, the method also comprises: receive the signal that represents the temperature in drying roller, and the output temperature value; Relatively this temperature value and given threshold value, and output temperature comparative result; Be greater than given threshold value if described temperature comparative result is described temperature value, the coal-supplying amount of controlling feeder reduces.Thereby, during excess Temperature in drying roller, can, by reducing the coal-supplying amount of feeder, lower the temperature in drying roller.
According to a kind of preferred embodiment, both can control the coal-supplying amount increase of feeder or reduce according to described water content comparative result, the coal-supplying amount that can control feeder according to described temperature comparative result again reduces.In this case, likely occur that described moisture content value is greater than given threshold value, need the coal-supplying amount of controlling feeder to increase, temperature in drying roller is too high again simultaneously, need the coal-supplying amount of controlling feeder to reduce, in this case, the preferred coal-supplying amount according to described temperature comparative result control feeder is reduced, too high and make dustproof cloth bag burning with the exhaust temperature of avoiding drying roller, prevent from causing danger.
Preferably, described drying roller control method can also comprise when described drying roller starts, control described drying roller low cruise; After described drying roller starts, control described 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 the first output device, and described water content receiving system receives the signal that represents the sand water content in drying roller, and the output moisture content value; Described water content comparison means receives described moisture content value, relatively this moisture content value and given threshold value, and to described the first output device output water content comparative result; The control signal that the rotating speed that described the first output device is controlled drying roller according to described water content comparative result output increases or reduces, when described moisture content value is greater than given threshold value, the control signal that the rotating speed that drying roller is controlled in described the first output device output reduces; When described moisture content value is less than or equal to given threshold value, the control signal that the rotating speed that drying roller is controlled in described the first output device output increases.
Wherein, when described moisture content value is greater than given threshold value, the 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 the time of staying of sand in drying roller elongated, and heated time is elongated, thereby make the moisture in sand evaporate more fully, the sand water content will reduce.When described moisture content value is less than given threshold value, the 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 is less than the water content of given threshold value sand and just meets the demands, if crossing, the sand speed of travel can make on the contrary slowly the sand drying efficiency too low, and waste energy, increase to improve like this speed of travel of sand by the rotating speed that makes drying roller, can rapidly sand be dried by height, improved operating efficiency.
Preferably, when described drying roller starts, the control signal of described drying roller low cruise is controlled in described the first output device output; After described drying roller starts, the control signal of described drying roller high-speed cruising is controlled in described the first output device output.Like this, when drying roller starts, can reduce the impact of the electric motor starting of drying roller to electrical network so that drying roller low speed slowly starts, also can reduce starting current, reduce the infringement of start-up course to the motor of drying roller simultaneously.And after drying roller starts, can so that the drying roller fast rotational sand is dried.
When the rotating speed by controlling drying roller is controlled the sand water content, can also further regulate coal-supplying amount, effectively to regulate more rapidly the sand water content.Thereby, according to a kind of preferred real-time mode, this drying roller control appliance can also comprise the second output device, the control signal that the coal-supplying amount that described the second output device is controlled feeder according to described water content comparative result output increases or reduces, when described moisture content value is greater than given threshold value, the control signal that the coal-supplying amount that feeder is controlled in described the second output device output increases; When described moisture content value is less than or equal to given threshold value, the control signal that the coal-supplying amount that feeder is controlled in described the second output device output reduces.
Wherein, when described moisture content value is greater than given threshold value, can also, by the second output device output control signal to increase the coal-supplying amount of feeder, make the temperature in drying roller increase, thereby quickly the moisture in sand is evaporated, reduced the sand water content.When described moisture content value is less than given threshold value, can also be by the 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 by very high temperature, sand dried can be caused waste to the coal dust dropped into, thus can reduce the coal-supplying amount of feeder, to save the energy.
Make the dustproof cloth bag burning for the exhaust temperature that prevents drying roller is too high, cause danger, can also monitor the temperature in drying roller.According to a kind of preferred embodiment, described drying roller control appliance can also comprise temperature receiving system and temperature comparison means and the second output device, and described temperature receiving system receives the signal that represents the temperature in drying roller, and the output temperature value; Described temperature comparison means receives described temperature value, relatively this temperature value and given threshold value, and to described the second output device output temperature comparative result; When described the second output device receives described temperature value and is greater than the temperature comparative result of given threshold value, the control signal that the coal-supplying amount of feeder reduces is controlled in output.Thereby, during excess Temperature in drying roller, can, by reducing the coal-supplying amount of feeder, lower the temperature in drying roller.
According to preferred embodiment a kind of, the control signal that the coal-supplying amount that described the second output device can be both controlled feeder according to described water content comparative result output increases or reduces, can export the control signal that the coal-supplying amount of controlling feeder reduces according to described temperature comparative result again.In this case, likely occur that described moisture content value is greater than given threshold value, described the second output device need to be exported the control signal of the coal-supplying amount increase of controlling feeder, temperature in drying roller is too high again simultaneously, described the second output device need to be exported the control signal that the coal-supplying amount of controlling feeder reduces, in this case, the control signal that the coal-supplying amount that described the second output device will preferably be controlled feeder according to described temperature comparative result output reduces, too high and make dustproof cloth bag burning with the exhaust temperature of avoiding drying roller, prevent from causing danger.
The present invention also provides a kind of drying roller control system, with reference to figure 1, this drying roller control system comprises foregoing drying roller control appliance, moisture determination device and the first frequency converter, described drying roller control appliance is electrically connected to described moisture determination device and described the first frequency converter, the signal that represents the sand water content in drying roller that described moisture determination device will detect sends to the water content receiving system in described drying roller control appliance, the control signal that the frequency that described the first output device is controlled described the first frequency converter according to described water content comparative result output increases or reduces, when described moisture content value is greater than given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output reduces, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output reduces, when described moisture content value is less than or equal to given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output increases, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output increases.
Drying roller control system provided by the invention can detect the sand water content in drying roller by the moisture determination device, and adopts converter technique to control the speed of drying roller.Wherein, when described moisture content value is greater than given threshold value, the control signal that the first output device reduces to described the first frequency converter output frequency, the motor of the first transducer drive drying roller is so that the rotating speed of drying roller reduces, and like this, the speed of travel of sand in drying roller reduces, make the time of staying of sand in drying roller elongated, heated time is elongated, thereby makes the moisture in sand evaporate more fully, and the sand water content will reduce.When described moisture content value is less than given threshold value, the control signal that the first output device increases to described the first frequency converter output frequency, the motor of the first transducer drive drying roller 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 is less than the water content of given threshold value sand and just meets the demands, if crossing, the sand speed of travel can make on the contrary slowly the sand drying efficiency too low, and waste energy, increase to improve like this speed of travel of sand by the rotating speed that makes drying roller, can rapidly sand be dried by height, improved operating efficiency.
Preferably, when described drying roller starts, the control signal of described the first converter low-frequency operation is controlled in described the first output device output, and described the first frequency converter is controlled the control signal of drying roller low cruise according to this control signal output; After described drying roller starts, the control signal of described the first frequency converter high frequency operation is controlled in described the first output device output, and described the first frequency converter is controlled the control signal of drying roller high-speed cruising according to this control signal output.Like this, when drying roller starts, can be driven by the first frequency converter the motor of drying roller in the low frequency situation, make drying roller slowly start, start drying roller by the first converter low-frequency, can reduce the impact of the electric motor starting of drying roller to electrical network, also can reduce starting current, reduce the infringement of start-up course to the motor of drying roller simultaneously.And, after drying roller starts, the first frequency converter can enter the high frequency running status, makes the drying roller fast rotational, and sand is dried.
When the rotating speed by controlling drying roller is controlled the sand water content, can also further regulate coal-supplying amount, effectively to regulate more rapidly the sand water content.Thereby, according to a kind of preferred real-time mode, in the situation that described drying roller control appliance also comprises the second output device, this drying roller control system can also comprise the second frequency converter, drying roller control appliance recited above is electrically connected to described the second frequency converter, the control signal that the frequency that described the second output device is controlled described the second frequency converter according to described water content comparative result output increases or reduces, the control signal of the speed of feeder is controlled in described the second frequency converter output, when described moisture content value is greater than given threshold value, the control signal that the frequency that described the second frequency converter is controlled in described the second output device output increases, the control signal that the speed that described the second frequency converter is controlled feeder according to this control signal output increases, when described moisture content value is less than or equal to given threshold value, the control signal that the frequency that described the second frequency converter is controlled in described the second output device output reduces, the control signal that the speed that described the second frequency converter is controlled feeder according to this control signal output increases.
Thus, can adopt converter technique to control the speed of feeder.When described moisture content value is greater than given threshold value, can also be by the second output device output control signal to increase the frequency of the second frequency converter, thereby the motor of the second transducer drive feeder is so that the speed of feeder increases, increase coal-supplying amount, make the temperature in drying roller increase, thereby quickly the moisture in sand is evaporated, reduced the sand water content.When described moisture content value is less than given threshold value, can also export control signal to reduce the frequency of the second frequency converter by the second output device, thereby the motor of the second transducer drive feeder is 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 by very high temperature, sand dried can be caused waste to the coal dust dropped into, thus can reduce the coal-supplying amount of feeder, to save the energy.
Make the dustproof cloth bag burning for the exhaust temperature that prevents drying roller is too high, cause danger, can also monitor the temperature in drying roller.According to a kind of preferred embodiment, in the situation that described drying roller control appliance comprises temperature receiving system and temperature comparison means and the second output device, this drying roller control system can also comprise temperature sensor, and described temperature sensor sends to the temperature receiving system in described drying roller control appliance by the signal of the temperature in the drying roller detected.Thereby, during excess Temperature in drying roller, can, by reducing the coal-supplying amount of feeder, lower the temperature in drying roller.
According to preferred embodiment a kind of, the control signal that the coal-supplying amount that described the second output device can be both controlled feeder according to described water content comparative result output increases or reduces, can export the control signal that the coal-supplying amount of controlling feeder reduces according to described temperature comparative result again.In this case, likely occur that described moisture content value is greater than given threshold value, described the second output device need to be exported the control signal of the coal-supplying amount increase of controlling feeder, temperature in drying roller is too high again simultaneously, described the second output device need to be exported the control signal that the coal-supplying amount of controlling feeder reduces, in this case, the control signal that the coal-supplying amount that described the second output device will preferably be controlled feeder according to described temperature comparative result output reduces, too high and make dustproof cloth bag burning with the exhaust temperature of avoiding drying roller, prevent from causing danger.
Pass through technique scheme, can regulate the time of staying of sand in drying roller by the rotating speed of regulating drying roller, the heated time of sand changes, thereby can regulate the water content of sand, governing response speed is fast, can effectively dry sand, 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.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in 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.
It should be noted that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can be combined by any suitable mode.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present invention, also can carry out any combination, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. a drying roller control method, the method comprises:
Reception represents the signal of the sand water content in drying roller, and the output moisture content value;
Relatively this moisture content value and given threshold value, and output water content comparative result;
The rotating speed of controlling drying roller according to described water content comparative result increases or reduces,
When described moisture content value is greater than given threshold value, the rotating speed of controlling drying roller reduces; When described moisture content value is less than or equal to given threshold value, the rotating speed of controlling drying roller increases; The coal-supplying amount of controlling feeder according to described water content comparative result increases or reduces,
When described moisture content value is greater than given threshold value, the coal-supplying amount of controlling feeder increases;
When described moisture content value is less than or equal to given threshold value, the coal-supplying amount of controlling feeder reduces;
Reception represents the signal of the temperature in drying roller, and the output temperature value;
Relatively this temperature value and given threshold value, and output temperature comparative result;
Be greater than given threshold value if described temperature comparative result is described temperature value, the coal-supplying amount of controlling feeder reduces; Wherein make when feeder is controlled on the contrary when described water content comparative result and temperature comparative result, according to described temperature comparative result, control the coal-supplying amount of feeder.
2. drying roller control method according to claim 1, the method also comprises:
When described drying roller starts, control described drying roller low cruise; After described drying roller starts, control described drying roller high-speed cruising.
3. a drying roller control appliance, wherein, this equipment comprises water content receiving system, water content comparison means, the first output device, the second output device, temperature receiving system and temperature comparison means,
Described water content receiving system receives the signal that represents the sand water content in drying roller, and the output moisture content value;
Described water content comparison means receives described moisture content value, relatively this moisture content value and given threshold value, and to described the first output device output water content comparative result;
The control signal that the rotating speed that described the first output device is controlled drying roller according to described water content comparative result output increases or reduces,
When described moisture content value is greater than given threshold value, the control signal that the rotating speed that drying roller is controlled in described the first output device output reduces;
When described moisture content value is less than or equal to given threshold value, described the first output device output
Control the control signal of the rotating speed increase of drying roller;
The control signal that the coal-supplying amount that described the second output device is controlled feeder according to described water content comparative result output increases or reduces,
When described moisture content value is greater than given threshold value, the control signal that the coal-supplying amount that feeder is controlled in described the second output device output increases;
When described moisture content value is less than or equal to given threshold value, the control signal that the coal-supplying amount that feeder is controlled in described the second output device output reduces;
Described temperature receiving system receives the signal that represents the temperature in drying roller, and the output temperature value;
Described temperature comparison means receives described temperature value, relatively this temperature value and given threshold value, and to described the second output device output temperature comparative result;
When described the second output device receives described temperature value and is greater than the temperature comparative result of given threshold value, the control signal that the coal-supplying amount of feeder reduces is controlled in output;
Wherein, when described water content comparative result and temperature comparative result make described the second output device export contrary control signal, described the second output device is according to described temperature comparative result output control signal.
4. drying roller control appliance according to claim 3, wherein,
When described drying roller starts, the control signal of described drying roller low cruise is controlled in described the first output device output; After described drying roller starts, the control signal of described drying roller high-speed cruising is controlled in described the first output device output.
5. a drying roller control system, this drying roller control system comprises drying roller control appliance according to claim 3, moisture determination device and the first frequency converter, described drying roller control appliance is electrically connected to described moisture determination device and described the first frequency converter
The signal that represents the sand water content in drying roller that described moisture determination device will detect sends to the water content receiving system in described drying roller control appliance,
The control signal that the frequency that described the first output device is controlled described the first frequency converter according to described water content comparative result output increases or reduces,
When described moisture content value is greater than given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output reduces, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output reduces;
When described moisture content value is less than or equal to given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output increases, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output increases.
6. a drying roller control system, wherein, this drying roller control system comprises drying roller control appliance according to claim 3, moisture determination device and the first frequency converter, and described drying roller control appliance is electrically connected to described moisture determination device and described the first frequency converter
The signal that represents the sand water content in drying roller that described moisture determination device will detect sends to the water content receiving system in described drying roller control appliance,
The control signal that the frequency that described the first output device is controlled described the first frequency converter according to described water content comparative result output increases or reduces,
When described moisture content value is greater than given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output reduces, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output reduces;
When described moisture content value is less than or equal to given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output increases, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output increases;
This drying roller control system also comprises the second frequency converter, described drying roller control appliance is electrically connected to described the second frequency converter, the control signal that the frequency that described the second output device is controlled described the second frequency converter according to described water content comparative result output increases or reduces, the control signal of the speed of feeder is controlled in described the second frequency converter output
When described moisture content value is greater than given threshold value, the control signal that the frequency that described the second frequency converter is controlled in described the second output device output increases, the control signal that the speed that described the second frequency converter is controlled feeder according to this control signal output increases;
When described moisture content value is less than or equal to given threshold value, the control signal that the frequency that described the second frequency converter is controlled in described the second output device output reduces, the control signal that the speed that described the second frequency converter is controlled feeder according to this control signal output increases.
7. a drying roller control system, wherein, this drying roller control system comprises drying roller control appliance according to claim 3, moisture determination device and the first frequency converter, and described drying roller control appliance is electrically connected to described moisture determination device and described the first frequency converter
The signal that represents the sand water content in drying roller that described moisture determination device will detect sends to the water content receiving system in described drying roller control appliance,
The control signal that the frequency that described the first output device is controlled described the first frequency converter according to described water content comparative result output increases or reduces,
When described moisture content value is greater than given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output reduces, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output reduces;
When described moisture content value is less than or equal to given threshold value, the control signal that the frequency that described the first frequency converter is controlled in described the first output device output increases, the control signal that the rotating speed that described the first frequency converter is controlled drying roller according to this control signal output increases;
This drying roller control system also comprises temperature sensor, and described temperature sensor sends to the temperature receiving system in described drying roller control appliance by the signal of the temperature in the drying roller detected.
8. according to the described drying roller control system of any one claim in claim 5-7, wherein,
When described drying roller starts, the control signal of described the first converter low-frequency operation is controlled in described the first output device output, and described the first frequency converter is controlled the control signal of drying roller low cruise according to this control signal output;
After described drying roller starts, the control signal of described the first frequency converter high frequency operation is controlled in described the first output device output, and described the first frequency converter is controlled the control signal of drying roller high-speed cruising according to this control signal output.
9. a drying plant, this drying plant comprises according to the described drying roller control system of any one in claim 5-7, drying roller and feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN102706112A (en) * | 2012-05-14 | 2012-10-03 | 鄂尔多斯市中誉能源股份有限公司 | Drying device and drying method for preventing coal from regaining moisture |
| CN103206842B (en) * | 2013-04-08 | 2015-03-25 | 上海烟草集团有限责任公司 | Multi-parameter control system of roller dryer |
| CN103712433B (en) * | 2014-01-02 | 2015-12-02 | 中联重科股份有限公司 | Dry-mixed mortar mixing station and combustion control method and device of drying system of dry-mixed mortar mixing station |
| CN105571308B (en) * | 2014-10-15 | 2018-01-09 | 中联重科股份有限公司 | Control system, method and device of dry-mixed mortar drying system |
| CN105135838A (en) * | 2015-08-18 | 2015-12-09 | 灵山县骄丰化工有限公司 | Compound fertilizer drying system |
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| CN101058938A (en) * | 2006-04-17 | 2007-10-24 | Lg电子株式会社 | Dryer and the control method of the same |
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| JP5223456B2 (en) * | 2008-05-22 | 2013-06-26 | パナソニック株式会社 | Blower |
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| JP3243819B2 (en) * | 1992-02-14 | 2002-01-07 | 井関農機株式会社 | Hot air temperature correction method for grain dryer |
| JPH1130481A (en) * | 1997-07-11 | 1999-02-02 | Iseki & Co Ltd | Drying speed control device for cereal drier |
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| CN101058938A (en) * | 2006-04-17 | 2007-10-24 | Lg电子株式会社 | Dryer and the control method of the same |
| CN201032335Y (en) * | 2007-05-09 | 2008-03-05 | 余开生 | Temperature control frequency conversion drying machine |
| JP5223456B2 (en) * | 2008-05-22 | 2013-06-26 | パナソニック株式会社 | Blower |
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