CN101660863A - Self-adjustment garbage drier - Google Patents

Self-adjustment garbage drier Download PDF

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Publication number
CN101660863A
CN101660863A CN200910114411A CN200910114411A CN101660863A CN 101660863 A CN101660863 A CN 101660863A CN 200910114411 A CN200910114411 A CN 200910114411A CN 200910114411 A CN200910114411 A CN 200910114411A CN 101660863 A CN101660863 A CN 101660863A
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fuzzy
water content
error
control
self
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CN200910114411A
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Chinese (zh)
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CN101660863B (en
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李海标
莫金海
韦寿祺
何少佳
黄知超
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桂林电子科技大学
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Abstract

The invention discloses a self-adjustment garbage drier which is characterized in that a circuit part thereof comprises a control center, a transducer, a D/A conversion module, an A/D conversion module, a moisture content detecting circuit, a temperature detecting circuit and a human-computer interface, wherein the control center internally comprises a temperature signal processing module, a moisture content signal processing module, a fuzzy control module and a proportional-integral control module. The control center can automatically adjust the rotating speed of a motor in a fuzzy control mode according to the high-low of the moisture content of the domestic garbage and the high-low of the hot air temperature and guarantees that the moisture content of the dried garbage is in line with the requirement.

Description

Self-adjustment garbage drier

Technical field

The present invention relates to the garbage disposal field, particularly a kind of self-adjustment garbage drier is used for that rubbish is carried out drying and handles, and makes the water content through the rubbish behind the self adaptation dryer all can meet the requirement of burning and regenerating.

Background technology

Be innoxious, the resource that realizes rubbish and the processing target of minimizing, make it can reasonable use, the trend of garbage disposal be that it is carried out burning disposal or is made into soft coal again by technological means.Studies show that, primary house refuse contains a large amount of moisture, the existence of these large quantity of moistures makes rubbish have shortcomings such as caloric value is low, efficiency of combustion is low and equipment easily is corroded in burning and regenerative process, therefore, how before waste incineration and regeneration it being carried out efficient drying removes its contained humidity whole garbage disposal process is played crucial effects.Domestic present employed garbage drier adopts the hot air convection dried forms mostly, and its structure mainly is made up of frame and the support roller, cylinder, gear reduction and the motor that are arranged on the frame.Cylinder is shelved on the support roller and rolls, corresponding feed hopper and discharge bucket, and air inlet and the air outlet of being provided with on the cylinder.Air inlet is connected with hot blast conveying pipe, and air outlet is connected with the hot air reflux pipe.During work, motor drives cylinder and rotates through the gear reduction transmission, and the hot blast that hot blast conveying pipe is carried enters cylinder from air inlet, enter the hot air reflux pipe from air outlet after passing cylinder, meanwhile, rubbish enters cylinder from feed hopper, along with cylinder rotates, rubbish stirs in cylinder, and move to discharge bucket gradually, rubbish is dried under the hot blast effect, discharges from discharge bucket through the rubbish behind the drying machine drying.

But in use there is following defective in above-mentioned dryer: because the cylinder velocity of rotation immobilizes, rubbish moves the required time in cylinder also constant, that is the time that rubbish is dried also immobilizes; But the water content of the primary house refuse that different location, different time are collected is different, and the temperature of hot blast is also unstable, thereby causes the water content of the rubbish after the oven dry inconsistent.When the water content of a part of rubbish met the requirements, another part rubbish can not burn and the requirement of regeneration because of dehydration can't reach fully, thereby influenced the burning of rubbish and the quality of soft coal again.If allow the water content of all rubbish all meet the demands, just need carry out repeatedly cyclic drying and handle rubbish, this just strengthened treatment facility pressure, prolonged the cycle of garbage disposal.

Summary of the invention

Technical problem to be solved by this invention has provided a kind of self-adjustment garbage drier, and this equipment can be regulated the rotating speed of motor automatically according to the water content height of house refuse, the height of hot blast temperature, and the water content of the rubbish after guaranteeing to dry meets the requirements.

For achieving the above object, the self-adjustment garbage drier that the present invention is designed mainly is made up of frame and the support roller, cylinder, gear reduction and the motor that are arranged on the frame; Cylinder is shelved on the support roller and rolls, corresponding feed hopper and discharge bucket, and air inlet and the air outlet of being provided with on the cylinder; Air inlet is connected with hot blast conveying pipe, and air outlet is connected with the hot air reflux pipe; Motor is connected with cylinder through the gear reduction transmission; Its difference is:

Also comprise control centre, frequency converter, D/A modular converter, A/D modular converter, water content testing circuit, temperature sensing circuit and man-machine interface;

The water content testing circuit is installed in feed hopper and discharge bucket place respectively, and temperature sensing circuit is installed in garbage drier air inlet place; The water content testing circuit is connected with the input end of analog signal of temperature sensing circuit with the A/D modular converter, and the A/D modular converter is connected with control centre by cable again; The D/A modular converter is connected with control centre by cable, and the analog signal output of D/A modular converter is connected to frequency converter, and frequency converter is connected with electric electromechanics through cable; Control centre also is connected with man-machine interface with frequency converter in addition;

Include processes temperature signal module, water content signal processing module, fuzzy control model and proportional plus integral control module in the control centre;

Obtain the hot blast temperature t at air inlet place after the processes temperature signal module is handled temperature sensing circuit measured temperature signal, deliver to fuzzy control model then;

Water content x and oven dry back water content x before obtaining drying after the water content signal processing module is handled water content testing circuit institute measured moisture content signal Out, and calculate oven dry back water content x OutPoor with setting value x ', i.e. e=x '-x Out, obtain error e; Again e is carried out differential calculation, obtain error rate ec; At last error e is judged that when error e during greater than threshold value, water content x, error e and error rate ec send into fuzzy control model before will drying; When error e during, error e is sent into the proportional plus integral control module less than threshold value;

Fuzzy control model is an input variable with error e, error rate ec, hot blast temperature t and the preceding water content x of rubbish oven dry, calculates next controlled quentity controlled variable constantly by fuzzy control rule, by the D/A modular converter control signal is sent into frequency converter then.

The proportional plus integral control module is input quantity with the error e, and integral algorithm calculates next controlled quentity controlled variable constantly in proportion, by the D/A modular converter control signal is sent into frequency converter then.

The described dryer of such scheme also includes the adjusting angle mechanism that can regulate the cylinder angle of inclination.

The described dryer of such scheme also comprises velocity checking circuits, control centre's correspondence be provided with the tach signal processing module.Speed detect circuit and coaxial connection of motor (5), speed detect circuit is connected to the tach signal processing module of control centre in addition, the output signal of speed detect circuit is delivered to the tach signal processing module of control centre.The tach signal processing module of control centre is connected with man-machine interface, obtains tachometer value after tach signal that speed detect circuit is surveyed is handled, and delivers to man-machine interface then and shows.

The advantage of garbage drier of the present invention and control system thereof is: can be according to house refuse at the water content height of oven dry front and back and the height of hot blast temperature, by the rotating speed of the most energy-conservation scheme control motor, the water content of the rubbish after guaranteeing to dry meets the requirements within a certain period of time.

Description of drawings

Fig. 1 is the frame for movement schematic diagram of an embodiment of the present invention;

Fig. 2 is the electric wiring structure chart of an embodiment of the present invention;

Fig. 3 is the schematic diagram of an embodiment of the present invention control centre;

Fig. 4 is an embodiment of the present invention control flow chart.

Reference numeral: 1, frame; 2, support roller; 3, cylinder; 4, gear reduction; 5, motor; 6, feed hopper; 7, discharge bucket; 8, air inlet; 9, air outlet; 10, adjusting angle mechanism.

The specific embodiment

A kind of embodiment frame for movement of self-adjustment garbage drier of the present invention is referring to Fig. 1: frame firmly on the ground, frame 1 is provided with support roller 2, be shelved on the support roller 2 after cylinder 3 fastens as one with wheel track and roll, motor 5 rotates through gear reduction 4 head rolls 3.Cylinder 3 two ends correspondences be provided with feed hopper 6 and discharge bucket 7, and air inlet 8 and air outlet 9, air inlet 8 is connected with hot blast conveying pipe, discharge bucket 7 upper ends are air outlet 9, and air outlet 9 is connected with the hot air reflux pipe, and the rubbish after the oven dry is sent from the discharging opening of discharge bucket 7 lower ends.In addition, the present invention preferably also comprises an adjusting angle mechanism 10, and this adjusting angle mechanism 10 adopts leading screw and nut mechanisms, is arranged on feed hopper 6 one ends of cylinder 3, can be directly be connected manually or with control centre to realize control, in order to regulate the angle of inclination of cylinder 3.By the inclination angle of change frame 1 or the rotating speed of cylinder 3, promptly be equivalent to control the drying time of rubbish in dryer, thus the water content after the oven dry of control rubbish.In the present embodiment, will realize automatic control by the rotating speed that the rotating speed that changes cylinder 3 is promptly controlled motor 5 to the water content after the rubbish oven dry.

In order to realize automatic control to the water content after the rubbish oven dry, the dryer control system of the present invention's design includes control centre, frequency converter, D/A modular converter, A/D modular converter, water content testing circuit, temperature sensing circuit, velocity checking circuits and man-machine interface as shown in Figure 2.The control centre of present embodiment is programmable controller PLC, and man-machine interface is a touch display screen.The speed probe of speed detect circuit is a photoelectric coded disk, and photoelectric coded disk and 5 coaxial connections of motor are used to measure motor 5 rotating speeds.Sensor in the water content testing circuit is the gamma-rays pipe, and the gamma-rays pipe is installed in the rubbish conveyer belt place of garbage drier feed hopper 6 and discharge bucket 7 respectively, be used to measure rubbish before oven dry and after the oven dry water content.Temperature sensor in the temperature sensing circuit is a RTD, and RTD is installed in garbage drier air inlet 8 places, is used to measure the hot blast temperature at air inlet 8 places.D/A modular converter and A/D modular converter are special functional module commonly used in control centre's control system.Speed detect circuit is connected to control centre's input; The water content testing circuit is connected with the input end of analog signal of temperature sensing circuit with the A/D modular converter, and the A/D modular converter is connected with control centre by cable again.The D/A modular converter is connected with control centre by cable, and the analog signal output of D/A modular converter is connected to frequency converter; Frequency converter is electrically connected with motor (5) through cable; Control centre also is connected with man-machine interface with frequency converter in addition.During work, control centre passes through the output frequency that the D/A modular converter is regulated frequency converter, and then regulates motor 5 speed by frequency converter; Man-machine interface is used for initialization system parameter and display system running status.

Control centre of the present invention includes tach signal processing module, water content signal processing module, processes temperature signal module, fuzzy control model and proportional plus integral control module as shown in Figure 3.

The tach signal processing module obtains tachometer value after tach signal that speed detect circuit is surveyed is handled, and delivers to man-machine interface then and shows.

Obtain the hot blast temperature t at air inlet 8 places after the processes temperature signal module is handled temperature sensing circuit measured temperature signal, deliver to fuzzy control model then.

Water content x and oven dry back water content x before obtaining drying after the water content signal processing module is handled water content testing circuit institute measured moisture content signal Out, and calculate oven dry back water content x OutPoor with setting value x ' obtains error e, wherein e=x '-x Out, again e is carried out differential calculation, obtain error rate ec.When e ≠ 0, to regulate output controlled quentity controlled variable u, thereby regulate motor 5 rotating speeds, the final adjusting that realizes drying time makes rubbish oven dry back water content x OutReach setting value x '.The present invention adopts Fuzzy PI Compound control to the control of output controlled quentity controlled variable u, principle is: control centre is judged error e, when error e during greater than threshold value, water content x, error e and error rate ec send into fuzzy control model before will drying, and adopt fuzzy control; When error e less than threshold value, error e is sent into the proportional plus integral control module, adopt proportional integral (PI) control.

Fuzzy control model is an input variable with error e, error rate ec, hot blast temperature t and the preceding water content x of rubbish oven dry, calculates next controlled quentity controlled variable constantly by fuzzy control rule, by the D/A modular converter control signal is sent into frequency converter then.Fuzzy control model of the present invention comprises defuzzification interface, database, rule base, indistinct logic computer and ambiguity solution interface; Defuzzification interface connects water content signal processing module and processes temperature signal module; Indistinct logic computer connects described defuzzification interface, database and rule base, be used for according to defuzzification interface input data, search related data and carry out fuzzy logic inference and fuzzy decision from described database according to the fuzzy rule in the described rule base; Ambiguity solution interface and D/A modular converter by described fuzzy control center behind the fuzzy control quantity ambiguity solution that the ambiguity solution interface is used for indistinct logic computer is obtained export frequency converter to.

The proportional plus integral control module is input quantity with the error e, and integral algorithm calculates next controlled quentity controlled variable constantly in proportion, by the D/A modular converter control signal is sent into frequency converter then.

In the present embodiment, the flow chart of control centre is as shown in Figure 4:

1, when system works, control centre carries out signal sampling by setting sampling period T1, and T1=20ms in this example is promptly every 20ms once sampling rotating speed, water content and temperature.Import the water content that this baking needed reaches by man-machine interface, promptly set value x '.Man-machine interface shows relevant informations such as rotating speed, water content, temperature.The water content signal processing module of control centre calculates rubbish oven dry back water content x OutPoor with setting value x ' obtains error e, wherein e=x '-x Out, again e is carried out differential calculation, obtain error rate ec.

2, defuzzification interface will accurately be measured obfuscation, obtain corresponding fuzzy value, and its detailed process is as follows:

The basic domain of hot blast temperature t is [300,450], and the domain of the linguistic variable T that temperature t is got is [0,1,2,3,4,5], and linguistic variable T chooses 3 language values: { L, M, B}.

The basic domain of water content x is [40,65] before the rubbish oven dry, and the domain of the linguistic variable X that water content x got is [0,1,2,3,4,5], and linguistic variable X chooses 3 language values: { L, M, B}.

The basic domain of error e is [10 ,+10], the domain of the linguistic variable E that error e is got for [6 ,-5 ...-0 ,+0 ... ,+5 ,+6], linguistic variable E chooses 6 language values: { PB, PS, P0, NO, NS, NB}.

The basic domain of error rate ec is [24 ,+24], the domain of the linguistic variable EC that ec got for [6 ,-5 ..., 0 ... ,+5 ,+6], linguistic variable EC chooses 5 language values: { PB, PS, 0, NS, NB}.

The basic domain of output controlled quentity controlled variable u is [0,5], and the domain of the linguistic variable U that u got is [0,1,2,3,4,5,6,7,8,9,10], and linguistic variable U chooses 5 language values: { C1, C2, C3, C4, C5}.

3, the language value of the linguistic variable E that gets when error for " zero (NO or PO) " time, adopt fuzzy control; When the language value of the linguistic variable E that gets when error is reduced to " zero (NO or PO) ", switch to proportional integral (PI) control.

(1) adopt the detailed process of fuzzy control as follows:

The fuzzy control model of control centre stores the fuzzy control rule of regulating output controlled quentity controlled variable u.The fuzzy control model of control centre is an input variable with the hot blast temperature t and the preceding water content x of rubbish oven dry at error e, error rate ec, air inlet 8 places, calculates next controlled quentity controlled variable constantly by fuzzy control rule.

Indistinct logic computer connects described defuzzification interface, database and rule base, be used for according to defuzzification interface input data, search related data and carry out fuzzy logic inference and fuzzy decision from described database according to the fuzzy rule in the described rule base.

The assignment table such as the table 1~table 5 of each linguistic variable of storing in the present embodiment database.

The assignment table of table 1: linguistic variable X

The assignment table of table 2: linguistic variable T

The assignment table of table 3: linguistic variable E

The assignment table of table 4: linguistic variable EC

Table 5: the assignment table of output language variable U

Present embodiment rule base storage the fuzzy rule form be: if T and X and E and EC then U, the rule set that above-mentioned general formula is concrete such as table 6~table 15.Press table 6 selective rule collection by water content x before hot blast temperature t and the rubbish oven dry.Rule set R1~R9 sees Table 7~table 15

Table 6: by the rule set of T and X decision

Table 7: rule set R1 (T=L, X=B)

Table 8: rule set R2 (T=L, X=M)

Table 9: rule set R3 (T=L, X=L)

Table 10: rule set R4 (T=M, X=B)

Table 11: rule set R5 (T=M, X=M)

Table 12: rule set R6 (T=M, X=L)

Table 13: rule set R7 (T=B, X=B)

Table 14: rule set R8 (T=B, X=M)

Table 15: rule set R9 (T=B, X=L)

Above-mentioned fuzzy rule one has 270, every corresponding fuzzy condition statement of fuzzy rule, and one has 270 fuzzy condition statements, and the fuzzy relation of every fuzzy condition statement decision is respectively γ 1..., γ 270, total fuzzy relation is:

Measure hot blast temperature t when supposing the n time sampling n, water content x before the rubbish oven dry n, error e nWith error rate ec n,, obtain the fuzzy subset T of corresponding sampling instant with these exact value obfuscations n, X n, E n, EC n, just can release the fuzzy subset U that exports controlled quentity controlled variable by following formula n,

U n=(T n×X n×E n×EC n)ογ

The ambiguity solution module is pressed gravity model appoach to fuzzy subset U nCarry out fuzzy judgment, multiply by corresponding scale factor again, can obtain exporting controlled quentity controlled variable exact value u n

(2) adopt the detailed process of proportional plus integral control as follows:

The proportional plus integral control module is input quantity with the error e, and integration (PI) algorithm calculates next controlled quentity controlled variable constantly in proportion, and its detailed process is as follows:

u n=45(e n-e n-1)+0.8e n+u n-1

In the following formula, e nError amount when being the n time sampling, e N-1Error amount when being the n-1 time sampling, u nThe controlled quentity controlled variable of the n time sampling back output, u N-1The controlled quentity controlled variable of the n-1 time sampling back output.

4, last, control centre sends control signal into frequency converter by the D/A modular converter, realizes the speed of motor (5) is regulated.

Claims (10)

1, self-adjustment garbage drier mainly is made up of frame and the support roller (2), cylinder (3), gear reduction (4) and the motor (5) that are arranged on the frame; Cylinder (3) is shelved on support roller (2) and go up rolls, and cylinder (3) is gone up and corresponding is provided with feed hopper (6) and discharge bucket (7), reaches air inlet (8) and air outlet (9); Air inlet (8) is connected with hot blast conveying pipe, and air outlet (9) is connected with the hot air reflux pipe; Motor (5) is connected with cylinder (3) through gear reduction (4) transmission; It is characterized in that:
Its circuit part mainly comprises control centre, frequency converter, D/A modular converter, A/D modular converter, water content testing circuit, temperature sensing circuit and man-machine interface;
The water content testing circuit is installed in feed hopper (6) respectively and discharge bucket (7) is located, and temperature sensing circuit is installed in garbage drier air inlet (8) and locates; The water content testing circuit is connected with the input end of analog signal of temperature sensing circuit with the A/D modular converter, and the A/D modular converter is connected with control centre by cable again; The D/A modular converter is connected with control centre by cable, and the analog signal output of D/A modular converter is connected to frequency converter, and frequency converter is electrically connected with motor (5) through cable; Control centre also is connected with man-machine interface with frequency converter in addition;
Include processes temperature signal module, water content signal processing module, fuzzy control model and proportional plus integral control module in the control centre;
The processes temperature signal module obtains the hot blast temperature t that air inlet (8) is located after temperature sensing circuit measured temperature signal is handled, and delivers to fuzzy control model then;
Water content x and oven dry back water content x before obtaining drying after the water content signal processing module is handled water content testing circuit institute measured moisture content signal Out, and calculate oven dry back water content x OutPoor with setting value x ', i.e. e=x-' x Out, obtain error e; Again e is carried out differential calculation, obtain error rate ec; At last error e is judged that when error e during greater than threshold value, water content x, error e and error rate ec send into fuzzy control model before will drying; When error e during, error e is sent into the proportional plus integral control module less than threshold value;
Fuzzy control model is an input variable with error e, error rate ec, hot blast temperature t and the preceding water content x of rubbish oven dry, calculates next controlled quentity controlled variable constantly by fuzzy control rule, by the D/A modular converter control signal is sent into frequency converter then;
The proportional plus integral control module is input quantity with the error e, and integral algorithm calculates next controlled quentity controlled variable constantly in proportion, by the D/A modular converter control signal is sent into frequency converter then.
2, self-adjustment garbage drier according to claim 1 is characterized in that: described threshold value is chosen " zero (N0 or the P0) " of the language value of the linguistic variable E that error e gets.
3, self-adjustment garbage drier according to claim 1 and 2 is characterized in that: described fuzzy control model comprises defuzzification interface, database, rule base, indistinct logic computer and ambiguity solution interface; Defuzzification interface connects water content signal processing module and processes temperature signal module, carries out Fuzzy processing to importing accurate amount, forms fuzzy quantity; Indistinct logic computer connects described defuzzification interface, database and rule base, be used for according to defuzzification interface input data, search related data and carry out fuzzy logic inference reasoning calculation from described database according to the fuzzy rule in the described rule base; Ambiguity solution interface and D/A modular converter by described fuzzy control center behind the fuzzy control quantity ambiguity solution that the ambiguity solution interface is used for indistinct logic computer is obtained export frequency converter to.
4, self-adjustment garbage drier according to claim 3, it is characterized in that: described defuzzification interface adopts the triangular form fuzzy device to construct membership function, and drawing error e, error rate ec, hot blast temperature t and the preceding water content x of rubbish oven dry is fuzzy subset E, EC, T, the X of input variable.
5, self-adjustment garbage drier according to claim 4 is characterized in that: the fuzzy rule form of storage is in the described rule base: if T and X and E and EC then U.
6, self-adjustment garbage drier according to claim 5 is characterized in that: store the fuzzy subset U that releases the output controlled quentity controlled variable in the described indistinct logic computer nFuzzy logic inference calculation program, promptly
U n=(T n×X n×E n×EC n)°γ
Wherein, T nBe the n time the sampling the obfuscation of hot blast temperature t exact value after resultant fuzzy subset;
X nBe resultant fuzzy subset after the obfuscation of water content x exact value before the oven dry of the n time sampling;
E nBe the n time the sampling the obfuscation of error e exact value after resultant fuzzy subset;
EC nBe the n time the sampling the obfuscation of error rate ec exact value after resultant fuzzy subset;
The fuzzy implication relation of γ for obtaining according to rule base.
7, self-adjustment garbage drier according to claim 6 is characterized in that: described ambiguity solution interface adopts gravity model appoach to fuzzy subset U nCarry out fuzzy judgment, multiply by corresponding scale factor again, can obtain exporting controlled quentity controlled variable exact value u n
8, self-adjustment garbage drier according to claim 1 and 2 is characterized in that: described proportional plus integral control module memory contains u n=45 (e n-e N-1)+0.8e n+ u N-1Algorithm routine, e wherein nError amount when being the n time sampling, e N-1Error amount when being the n-1 time sampling, u nThe controlled quentity controlled variable of the n time sampling back output, u N-1The controlled quentity controlled variable u of the n-1 time sampling back output n
9, self-adjustment garbage drier according to claim 1 is characterized in that: also include the adjusting angle mechanism (10) that can regulate cylinder (3) angle of inclination.
10, self-adjustment garbage drier according to claim 1, it is characterized in that: also comprise velocity checking circuits, control centre's correspondence be provided with the tach signal processing module, speed detect circuit and coaxial connection of motor (5), speed detect circuit is connected to the tach signal processing module, and the tach signal processing module also is connected with man-machine interface.
CN2009101144112A 2009-09-18 2009-09-18 Self-adjustment garbage drier CN101660863B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101660863B (en) * 2009-09-18 2011-03-16 桂林电子科技大学 Self-adjustment garbage drier
CN102445069A (en) * 2011-12-12 2012-05-09 中联重科股份有限公司 Method, device and system for controlling drying roller and drying device
CN103206842A (en) * 2013-04-08 2013-07-17 上海烟草集团有限责任公司 Multi-parameter control system of roller dryer
CN103438693A (en) * 2013-08-30 2013-12-11 中国农业大学 Automatic control system of gas jet impact drying machine
CN104101196A (en) * 2013-04-02 2014-10-15 大兴安岭神州北极木业有限公司 Wood dryer
CN104502129A (en) * 2014-12-08 2015-04-08 浙江工业大学 Energy efficiency measuring and calculating system for helical ribbon vacuum drying equipment
CN103704875B (en) * 2012-10-09 2016-01-20 北京精密机电控制设备研究所 A kind of high accuracy tobacco-shred water control method and control system thereof
CN110864515A (en) * 2019-11-28 2020-03-06 徐州马龙节能环保设备有限公司 Material drying method
CN110864516A (en) * 2019-11-28 2020-03-06 徐州马龙节能环保设备有限公司 Drying machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101660863B (en) * 2009-09-18 2011-03-16 桂林电子科技大学 Self-adjustment garbage drier

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101660863B (en) * 2009-09-18 2011-03-16 桂林电子科技大学 Self-adjustment garbage drier
CN102445069A (en) * 2011-12-12 2012-05-09 中联重科股份有限公司 Method, device and system for controlling drying roller and drying device
CN102445069B (en) * 2011-12-12 2013-12-25 中联重科股份有限公司 Method, device and system for controlling drying roller and drying device
CN103704875B (en) * 2012-10-09 2016-01-20 北京精密机电控制设备研究所 A kind of high accuracy tobacco-shred water control method and control system thereof
CN104101196A (en) * 2013-04-02 2014-10-15 大兴安岭神州北极木业有限公司 Wood dryer
CN103206842A (en) * 2013-04-08 2013-07-17 上海烟草集团有限责任公司 Multi-parameter control system of roller dryer
CN103438693A (en) * 2013-08-30 2013-12-11 中国农业大学 Automatic control system of gas jet impact drying machine
CN103438693B (en) * 2013-08-30 2015-03-25 中国农业大学 Automatic control system of gas jet impact drying machine
CN104502129A (en) * 2014-12-08 2015-04-08 浙江工业大学 Energy efficiency measuring and calculating system for helical ribbon vacuum drying equipment
CN110864515A (en) * 2019-11-28 2020-03-06 徐州马龙节能环保设备有限公司 Material drying method
CN110864516A (en) * 2019-11-28 2020-03-06 徐州马龙节能环保设备有限公司 Drying machine

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