CN109201213A - A kind of crusher feeding control method and system - Google Patents
A kind of crusher feeding control method and system Download PDFInfo
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- CN109201213A CN109201213A CN201710522603.1A CN201710522603A CN109201213A CN 109201213 A CN109201213 A CN 109201213A CN 201710522603 A CN201710522603 A CN 201710522603A CN 109201213 A CN109201213 A CN 109201213A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 238000005070 sampling Methods 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 238000012840 feeding operation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 clinker Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
- B02C2013/28618—Feeding means
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
A kind of crusher feeding control method and system is disclosed herein, and method is the following steps are included: detecting the load capacity of crusher and generating detection signal；Compare detection signal and default value and generates comparison result；Control signal is generated according to comparison result；According to the operating frequency of control signal control feeding motor；System includes detection unit, and detection unit is used to detect the load capacity of crusher, and generates detection signal；Comparing unit, comparing unit generate comparison result for comparing detection signal and default value；Control unit, control unit are used to generate control signal according to comparison result；Execution unit, execution unit are used for the operating frequency according to control signal control feeding motor；The application can be applied to crusher technical field, can effectively overcome defect in the prior art using the application, can be realized the automatic control of crusher feeding；Further, additionally it is possible to labor intensity be effectively reduced.
Description
Technical field
This application involves but be not limited to crusher technical field, especially a kind of crusher feeding control method and system.
Background technique
Hammer mill is common crushing plant, can be directly crushed the material that maximum particle size is 600-1800 millimeters
To 25 or 25 millimeters of single stage crushing crushers below.Hammer mill is suitable for being crushed the object of medium-hard relatively dry
Material, such as broken and fine crushing operation in lime stone, clinker, coke, coal material.
During crushing operation, equipment fault, the humidity of material, hardness and granular size all can influence equipment just
Often operating, it is easy to which the phenomenon that generating putty card machine had not only reduced broken working efficiency, but also a large amount of manpower and material resources places to go of waste in this way
Reason.Therefore, designing the reliable and stable hammer mill feeding control system of one kind is very important.
Summary of the invention
The technical issues of the application solves is to provide a kind of crusher feeding control method and system, can effectively overcome existing
There is the defects of technology, can be realized the automatic control of crusher feeding；Further, additionally it is possible to labor intensity be effectively reduced.
In order to solve the above technical problems, this application provides a kind of crusher feeding control methods, comprising the following steps:
It detects the load capacity of crusher and generates detection signal；
Compare detection signal and default value and generates comparison result；
Control signal is generated according to comparison result；
According to the operating frequency of control signal control feeding motor.
Above-mentioned crusher feeding control method, can also have following features,
The load capacity of detection crusher includes: to detect the present current value of crusher.
Above-mentioned crusher feeding control method, can also have following features,
Compare detection signal and default value and generate comparison result and includes:
Compare present current value and pre-set current value, and obtains current deviation value；
Amendment is filtered to current deviation value, and acquisition includes the comparison result of revised current deviation value e；Its
In, e=SP-PV, SP < Ie；
Unit is A in formula, and PV is actual current value, and SP is pre-set current value, and e is revised current deviation value, and Ie is
The rated current of motor of crusher.
Above-mentioned crusher feeding control method, can also have following features,
Generating control signal according to comparison result includes:
According to the size of revised current deviation value, corresponding control output variable is generated, and exports corresponding feeding
The target control frequency signal of motor.
Above-mentioned crusher feeding control method, can also have following features,
As -4 < e < 4, F=f0；
As 4≤e < 8, F=f0-f1, T=120s；
As -8 < e≤- 4, F=f0+f2, T=240s；
As e >=8, F=0；
As e≤- 8, F=f0+f2, T=240s, F≤fe；
F is control output variable, f in formula0For the current control variable of feeding motor, f1、f2To map control amount, f1=
1000, f2=500, fe are the specified control variable of feeding motor, and fe=31208, T are to control to adjust the period.
Above-mentioned crusher feeding control method, can also have following features,
Detection crusher present current value include:
The current flow of crusher is detected by current measuring element, and generates the current signal of corresponding 4-20mA.
Above-mentioned crusher feeding control method, can also have following features,
Being filtered amendment to current deviation value includes:
E in formula1For the first time sampled value in cycle T, e2For second of sampled value in cycle T, e3For in cycle T
Third time sampled value, etFor the t times sampled value in cycle T, T is the sampling period.
Above-mentioned crusher feeding control method, can also have following features,
The load capacity of detection crusher includes: to detect the main shaft torque of crusher.
Above-mentioned crusher feeding control method, can also have following features,
Compare detection signal with default value and generate current main shaft torque and preset torque compared with comparison result includes:,
And acquisition includes the comparison result of torque difference；
Generating control signal according to comparison result includes: to be generated corresponding according to the comparison result for including torque difference
The target control frequency signal of feeding motor.
In order to solve the above technical problems, present invention also provides a kind of crusher feeding control systems, comprising:
Detection unit, the detection unit are used to detect the load capacity of crusher, and generate detection signal；
Comparing unit, the comparing unit generate comparison result for comparing detection signal and default value；
Control unit, described control unit are used to generate control signal according to comparison result；
Execution unit, the execution unit are used for the operating frequency according to control signal control feeding motor.
The application above-mentioned technical proposal has the following beneficial effects:
Compared with the prior art, the application can be by effective real-time detection of crusher running current or main shaft torque, instead
Its operating condition is answered, on the one hand hammer mill feeding capacity is effectively controlled, the range that reasonably feeds intake is in, makes crusher work
Make to avoid putty, card machine phenomenon in optimum load level, also improve equipment work efficiency, thereby reduce disappearing for electric energy
Consumption；From another point of view, by detection device running current, can the failure of effectively aided-detection device itself handle in time, reduce
The manpower and material resources of equipment failure investment improve automatic detection level by man-machine interface.
Other features and advantage will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood by implementing the embodiment of the present invention.The purpose of the application and other advantages can be by illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical scheme, and constitutes part of specification, with this
The embodiment of application is used to explain the technical solution of the application together, does not constitute the limitation to technical scheme.
Fig. 1 is the control flow chart one of the embodiment of the present invention one；
Fig. 2 is the control flow chart two of the embodiment of the present invention one；
Fig. 3 is the control flow chart of the embodiment of the present invention two；
Fig. 4 is the control system figure of the embodiment of the present invention three.
Specific embodiment
Embodiments herein is described in detail below in conjunction with attached drawing.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can mutual any combination.
Embodiment one:
As shown in connection with fig. 1, the embodiment of the present invention one provides a kind of crusher feeding control method, may include following step
It is rapid:
It detects the load capacity of crusher and generates detection signal；
Compare detection signal and default value and generates comparison result；
Control signal is generated according to comparison result；
According to the operating frequency of control signal control feeding motor.
In concrete operations, being preferably provided with by the detecting step of above-mentioned crusher load amount, i.e., by crusher
The real-time detection of current broken material state controls the effective data provided to be subsequent；Can by above-mentioned default value with
The comparison between numerical value is detected, can be realized the analytical judgment to current detection data, to export corresponding control signal, with control
Feeding motor processed is run with target operating frequency；Above-mentioned preferred control method, can be realized the convenient of crusher feeding operations
It automatically controls；Further, labor intensity can also be effectively reduced in above-mentioned be preferably provided with.
As shown in Fig. 2, the load capacity of above-mentioned detection crusher includes: to detect the current flow of crusher in the present embodiment
Value；The current load capacity of crusher can be indirectly detected by the present current value of detection crusher.
In concrete operations, the present current value for detecting crusher may include: to detect crusher by current measuring element
Current flow, and generate the current signal of corresponding 4-20mA；Above-mentioned current measuring element can be the electricity being mounted in control cabinet
The control circuit of current transformer, above-mentioned current transformer and motor of crusher connects, with the operation for detecting hammer mill
Electric current；In turn, above-mentioned current measuring element can also be connected with electric current transmitting module, and the electric current that current measuring element is detected becomes
Change 4-20mA current signal into.
Further, in the present embodiment, above-mentioned relatively detection signal and default value is simultaneously generated compared with comparison result includes:
Present current value and pre-set current value, and obtain current deviation value；
Amendment is filtered to current deviation value, and acquisition includes the comparison result of revised current deviation value e；Its
In, e=SP-PV, SP < Ie；
Unit is A in formula, and PV is actual current value, and SP is pre-set current value, and e is revised current deviation value, and Ie is
The rated current of motor of crusher.
In concrete operations, above-mentioned correct to circuit deviations value filtering is operated, and can effectively improve the accuracy of testing result；
The running current change rate of crusher is larger at present, and the current deviation value after the operation of above-mentioned filter correction is more accurate.
It is above-mentioned that amendment is filtered to current deviation value in the present embodiment, the main multiple repairing weld by predetermined period
What the operation of averaged was realized；That is, above-mentioned steps further include being filtered amendment to current deviation value to include:
E in formula1For the first time sampled value in cycle T, e2For second of sampled value in cycle T, e3For in cycle T
Third time sampled value, etFor the t times sampled value in cycle T, T is the sampling period.In the present embodiment, above-mentioned sampling period T is
30s；It should be noted that above-mentioned sampling period T may be 60s or 20s or other times, it is inclined can satisfy circuit
Subject to the filtering operation of difference needs.
It is above-mentioned to include: according to comparison result generation control signal in the present embodiment
According to the size of revised current deviation value, corresponding control output variable is generated, and exports corresponding feeding
The target control frequency signal of motor.
In concrete operations, above-mentioned, according to revised current deviation value, generates the target control frequency letter of feeding motor
Number concrete operations can realize by the following method:
As -4 < e < 4, F=f0；
As 4≤e < 8, F=f0-f1, T=120s；
As -8 < e≤- 4, F=f0+f2, T=240s；
As e >=8, F=0；
As e≤- 8, F=f0+f2, T=240s, F≤fe；
F is control output variable, f in formula0For the current control variable of feeding motor, f1、f2To map control amount, f1=
1000, f2=500, fe are the specified control variable of feeding motor, and fe=31208, T are to control to adjust the period.
Above-mentioned control output variable F are as follows: 6242≤F≤31208, above-mentioned control output variable can correspond to feeding motor
Electric machine frequency 0-30Hz；Wherein, above-mentioned F corresponds to the target control frequency of feeding motor, f0Corresponding to the current of feeding motor
Running frequency, fe correspond to the operation maximum frequency of feeding motor；In concrete operations, above-mentioned control frequency converter can be by above-mentioned control
Output variable is converted to corresponding feeding motor frequency；The input terminal of above-mentioned control frequency converter can be used for receiving 4-20mA electric current letter
Number, output end can be used for for the electric machine frequency for corresponding to 0-30Hz being delivered to the frequency converter of feeding motor；Feeding motor especially by
Frequency Converter Control, to realize corresponding frequency adjustment operation.Above-mentioned feeding motor, specially feeding belt conveyer motor,
It is connected with frequency converter.
The present embodiment is obtained by multiple creative experiments:
When above-mentioned revised current deviation value is greater than -4 and when less than 4, crusher operates as running well, Neng Gouyou
Effect meets current feeding capacity, the mountable current operation frequency operating of feeding motor；
When above-mentioned revised current deviation value is more than or equal to 4 and when less than 8, crusher operates as improper operating,
Current load capacity is higher than the load capacity of its own, and crusher parts wear at this time is more serious, and crushing effect is bad,
The running frequency of feeding motor need to be turned down, to reduce the feeding capacity of current crusher, to realize corresponding optimizing regulation operation.
When above-mentioned revised current deviation value is more than or equal to 8, crusher operates as abnormal running, and currently
Load capacity is excessively high, far beyond the load capacity of its own, should stop carrying out feeding operations at this time, further to detect crusher
Whether components operating is normal, the case where effectively to avoid the abrasion aggravation for continuing crusher caused by feeding in the case of this.
When above-mentioned revised current deviation value is greater than -8 and is less than -4, the breaking capacity of crusher is not sent out completely
It waves, can suitably increase feeding capacity, to realize the best breaking capacity of crusher；The running frequency of feeding motor can specifically be mentioned
Height, to improve the feeding capacity of current crusher, to realize corresponding optimizing regulation operation.
When above-mentioned revised current deviation value is less than or equal to -8, the breaking capacity of crusher is not played completely,
Feeding capacity can suitably be increased；Meanwhile the normal operation in order to guarantee feeding motor, the running frequency of feeding motor need to be less than
Highest allows frequency, while breaking capacity to improve current crusher, can effectively ensure that the normal operation of feeding motor.
The present embodiment can be by its operating condition of the effective real time reaction of crusher running current, on the one hand to hammer crushing
Machine feeding capacity effectively controls, and is in and reasonably feeds intake range, makes crusher work in optimum load level, avoid putty,
Card machine phenomenon, also improves equipment work efficiency, thereby reduces the consumption of electric energy；From another point of view, it is transported by detection device
Row electric current, can the effectively failure of aided-detection device itself handle in time, reduce equipment and break down the manpower and material resources of investment, lead to
Man-machine interface is crossed, automatic detection level is improved.
Embodiment two:
As shown in figure 3, may include following step second embodiment of the present invention provides a kind of crusher feeding control method
It is rapid:
It detects the load capacity of crusher and generates detection signal；
Compare detection signal and default value and generates comparison result；
Control signal is generated according to comparison result；
According to the operating frequency of control signal control feeding motor.
What is different from the first embodiment is that the load capacity of above-mentioned detection crusher includes: detection crusher in the present embodiment
Main shaft torque；The current load capacity of crusher can be indirectly detected by the main shaft torque of detection crusher.It is above-mentioned relatively to examine
It surveys signal and with default value and generates current main shaft torque and preset torque compared with comparison result includes:, and obtaining includes to turn
The comparison result of square difference.It is above-mentioned according to comparison result generate control signal include: according to include torque difference comparison knot
Fruit generates the target control frequency signal of corresponding feeding motor.
In concrete operations, above-mentioned preset torque is compared with detecting torque, similar to the pre-set current value in embodiment one
The comparison of present current value；Above-mentioned includes the comparison result of torque difference, similar in embodiment one including that electric current is inclined
The comparison result of difference；Specific control method refers to the detailed record in embodiment one；The present embodiment and embodiment one are equal
Defect in the prior art can effectively be overcome, can be realized the automatic control of crusher feeding；Further, additionally it is possible to effectively
Reduce labor intensity.
Embodiment three:
As shown in figure 4, the embodiment of the present invention three provides a kind of crusher applied in embodiment one or embodiment two
The system of feeding control method may include:
Detection unit, the detection unit are used to detect the load capacity of crusher, and generate detection signal；
Comparing unit, the comparing unit generate comparison result for comparing detection signal and default value；
Control unit, described control unit are used to generate control signal according to comparison result；
Execution unit, the execution unit are used for the operating frequency according to control signal control feeding motor.
In concrete operations, above-mentioned detection unit can be circuit detecting element, or be torque sensing elements；It is above-mentioned relatively more single
Member can be comparison circuit, and above-mentioned control unit can be common programmable logic controller (PLC), and above-mentioned execution unit can be
The frequency converter being connect with feeding motor.
In the description of the present application, term " installation ", " connected ", " connection ", " fixation " etc. be shall be understood in a broad sense, example
Such as, " connection " may be fixed connection or may be dismantle connection, or integral connection；It can be directly connected, it can also be with
Indirectly connected through an intermediary.For the ordinary skill in the art, above-mentioned art can be understood as the case may be
The concrete meaning of language in this application.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the application
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
Although those skilled in the art should be understood that embodiment disclosed by the embodiment of the present invention is as above, described
The content only embodiment of the present invention and the embodiment that uses for ease of understanding, be not intended to limit the invention embodiment.It is any
Technical staff in fields of the embodiment of the present invention, in the premise for not departing from spirit and scope disclosed by the embodiment of the present invention
Under, any modification and variation, but the scope of patent protection of the embodiment of the present invention can be carried out in the form and details of implementation,
Still it should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of crusher feeding control method, which comprises the following steps:
It detects the load capacity of crusher and generates detection signal；
Compare detection signal and default value and generates comparison result；
Control signal is generated according to comparison result；
According to the operating frequency of control signal control feeding motor.
2. crusher feeding control method according to claim 1, which is characterized in that
The load capacity of detection crusher includes: to detect the present current value of crusher.
3. crusher feeding control method according to claim 2, which is characterized in that compare detection signal and default value
And it generates comparison result and includes:
Compare present current value and pre-set current value, and obtains current deviation value；
Amendment is filtered to current deviation value, and acquisition includes the comparison result of revised current deviation value e；Wherein, e
=SP-PV, SP < le；
Unit is A in formula, and PV is actual current value, and SP is pre-set current value, and e is revised current deviation value, and le is broken
The rated current of electromechanical machine.
4. crusher feeding control method according to claim 3, which is characterized in that generate control letter according to comparison result
Number include:
According to the size of revised current deviation value, corresponding control output variable is generated, and exports corresponding feeding motor
Target control frequency signal.
5. crusher feeding control method according to claim 4, which is characterized in that
As -4 < e < 4, F=f0；
As 4≤e < 8, F=f0-f1, T=120s；
As -8 < e≤- 4, F=f0+f2, T=240s；
As e >=8, F=0；
As e≤- 8, F=f0+f2, T=240s, F≤fe；
F is control output variable, f in formula0For the current control variable of feeding motor, f1、f2To map control amount, f1=1000,
f2=500, fe are the specified control variable of feeding motor, and fe=31208, T are to control to adjust the period.
6. according to the crusher feeding control method any in claim 2-5, which is characterized in that detect working as crusher
Preceding current value includes:
The current flow of crusher is detected by current measuring element, and generates the current signal of corresponding 4-20mA.
7. crusher feeding control method according to claim 3, which is characterized in that be filtered and repair to current deviation value
Just include:
E in formula1For the first time sampled value in cycle T, e2For second of sampled value in cycle T, e3For the third in cycle T
Secondary sampled value, etFor the t times sampled value in cycle T, T is the sampling period.
8. crusher feeding control method according to claim 1, which is characterized in that
The load capacity of detection crusher includes: to detect the main shaft torque of crusher.
9. crusher feeding control method according to claim 8, which is characterized in that
Compare detection signal with default value and generate current main shaft torque and preset torque compared with comparison result includes:, and obtains
It must include the comparison result of torque difference；
Generating control signal according to comparison result includes: to generate corresponding feeding according to the comparison result for including torque difference
The target control frequency signal of motor.
10. a kind of system applied to the crusher feeding control method any in claim 1-9, which is characterized in that
Include:
Detection unit, the detection unit are used to detect the load capacity of crusher, and generate detection signal；
Comparing unit, the comparing unit generate comparison result for comparing detection signal and default value；
Control unit, described control unit are used to generate control signal according to comparison result；
Execution unit, the execution unit are used for the operating frequency according to control signal control feeding motor.
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| CN201710522603.1A CN109201213A (en) | 2017-06-30 | 2017-06-30 | A kind of crusher feeding control method and system |
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| CN201710522603.1A CN109201213A (en) | 2017-06-30 | 2017-06-30 | A kind of crusher feeding control method and system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111151369A (en) * | 2020-03-09 | 2020-05-15 | 长沙中金智能装备有限公司 | Shredder control system and control method |
| CN112474016A (en) * | 2020-11-30 | 2021-03-12 | 深圳市智物联网络有限公司 | Control method, control device, terminal equipment and readable storage medium |
| CN113262871A (en) * | 2021-06-28 | 2021-08-17 | 中国水利水电第九工程局有限公司 | Intelligent control method for balanced crushing of fine crushing workshop in machine-made gravel |
| CN113457824A (en) * | 2021-07-02 | 2021-10-01 | 河南牧原智能科技有限公司 | Feeding control method and system for pulverizer |
| CN113769870A (en) * | 2021-09-15 | 2021-12-10 | 淮北矿业股份有限公司临涣选煤厂 | Accurate coal blending crushing screening mechanism based on coal loading system |
| CN118218104A (en) * | 2024-05-20 | 2024-06-21 | 哈尔滨和泰电力设备有限公司 | Grate cleaning crusher and control method |
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