CN111617877A - Intelligent control system and method for combined type dry method separator - Google Patents
Intelligent control system and method for combined type dry method separator Download PDFInfo
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- CN111617877A CN111617877A CN202010418550.0A CN202010418550A CN111617877A CN 111617877 A CN111617877 A CN 111617877A CN 202010418550 A CN202010418550 A CN 202010418550A CN 111617877 A CN111617877 A CN 111617877A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B4/00—Separating by pneumatic tables or by pneumatic jigs
- B03B4/02—Separating by pneumatic tables or by pneumatic jigs using swinging or shaking tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B13/00—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B13/00—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
- B03B13/04—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects using electrical or electromagnetic effects
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Abstract
The invention discloses an intelligent control system and method for a combined type dry method separator, belonging to the technical field of coal separation of the combined type dry method separator, wherein the system comprises information acquisition, information analysis, information transmission and equipment control; the information acquisition comprises the ash content, the moisture content and the feeding quantity of raw coal, the ash content and the yield of a sorted product, the inclination angle of a sorting bed surface, the amplitude and the vibration frequency of a motor and the air volume of an air chamber of the sorting bed; the information analysis is used for obtaining the optimal parameters of each auxiliary device according to the properties of the fed raw coal and adjusting each auxiliary device; the information transmission is to accurately convert the information of each part into an electric signal for transmission; the equipment is controlled, namely, each equipment receives an instruction to carry out self-regulation, and the optimal production efficiency is ensured. The invention can automatically adjust each auxiliary device of the composite dry method separator according to the properties of the fed raw coal and the product result, maintain the optimal separation efficiency and improve the automation level.
Description
Technical Field
The invention belongs to the technical field of coal separation of a composite dry separator, and particularly relates to an intelligent control system and method of the composite dry separator.
Background
More than 2/3 coal resources are distributed in northwest and northern areas, and environmental factors such as severe cold, drought and water shortage always restrict the coal resources from carrying out a large-scale wet separation process in the northwest area. Most of coal resources in China have low deterioration degree and high degree of gelatinization when meeting water, and are not suitable for wet separation. The dry coal separation technology is continuously developed for many years, wherein the composite dry separator has wide washing particle size range and high separation precision, and the continuous improvement of the dust removal technology also has great advantages in the aspect of environmental protection.
The traditional composite dry separator comprises a raw coal preparation system, a separation system and a dust removal system, wherein the separation bed system consists of a hanging device, lattice bars, a vibrating motor, a separation bed surface and an air chamber. The combined dry sorting system is formed by combining a plurality of process equipment and auxiliary equipment which execute different tasks, each loop works simply but is linked closely, so that the running states of various equipment need to be monitored in the running process, and the running of the equipment is ensured according to the set process program under the preset parameters. The inclination angle of the surface of the combined dry-method separation machine, vibration parameters, air quantity, the turnover plate angle of the receiving trough and the like all influence the coal separation efficiency and quality. At present, the composite dry method separator can only realize stopping manual adjustment system parameters after detecting the properties of the raw coal of the fed material, but can not realize automatic adjustment in the working process, thereby being time-consuming and labor-consuming and easily causing safety accidents of workers.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems, the invention provides an intelligent control system and method for a combined type dry method separator, which can improve the automation level of the combined type dry method separator, and can realize automatic adjustment of parameters of the separator in the working process to adapt to coal with different coal qualities, thereby improving the coal separation precision, improving the production efficiency, reducing the labor intensity of workers, better ensuring the production safety and improving the economic benefit.
The technical scheme is as follows: in order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows: the intelligent control system of the combined dry method separator comprises an information acquisition module, an information analysis module, an information transmission module and an equipment control module.
The information acquisition module is used for acquiring ash content, moisture content and feed quantity information of raw coal, sorted clean coal, middlings and gangue ash content and yield information, bed surface inclination angle information, three-air-chamber air speed information, sorting bed vibration motor amplitude and vibration frequency information and product dividing baffle angle information;
the information analysis module is used for matching the optimal feeding quantity parameter, the sorting bed inclination angle parameter, the air chamber air speed parameter, the vibrating machine parameter and the product dividing baffle position by inquiring the cloud database according to the collected feeding raw coal parameter and the equipment parameters of the sorting bed;
the information transmission module is used for transmitting the data acquired by the information acquisition module to the information analysis module and transmitting the preset parameter values of each piece of equipment after information analysis to the regulation and control device of each piece of process equipment;
and the equipment control module is used for receiving the optimal equipment parameter value obtained by the information analysis module, controlling each process equipment and auxiliary equipment to make corresponding response and automatically adjusting.
Furthermore, the information acquisition module comprises an ash content and moisture online detector respectively arranged on the raw coal conveying belt and the product output belt and used for detecting moisture content and ash content information of the raw coal and the product;
a speed sensor is arranged on the belt conveyor and used for monitoring the feeding speed; installing a belt scale, and monitoring the coal carrying capacity of the belt in real time; the length of a steel wire rope of the hanging sorting bed is mechanically received and sent for collecting the inclination angle information of the bed surface;
a flow sensor is arranged on the air supply pipeline and used for collecting the air volume of three air chambers for separating clean coal, middlings and gangue; a vibration sensor is arranged on the vibrating machine and used for collecting the amplitude and the vibration frequency of the sorting bed; the motor drives the gear for adjusting the position of the product dividing baffle.
Further, the information analysis module comprises a central processing unit and an external display;
the central processing unit is connected with a cloud database, the database comprises optimal separation efficiency parameters of the composite dry separator for various coal qualities, and the central processing unit is used for receiving real-time collected data, matching the optimal separation efficiency parameters in the database according to moisture data of the fed raw coal ash, and obtaining the optimal parameters for the current fed raw coal to be separated; the touch panel is used for observing the working states of each piece of process equipment and auxiliary equipment, controlling the start and stop of the equipment and manually modifying the operating parameters of the equipment.
The invention also provides an intelligent control method of the combined type dry separator, which comprises the following steps:
the method comprises the following steps: starting the composite dry method separator, feeding materials by a feeding belt, and detecting moisture data of the fed raw coal ash;
step two: performing data matching with a cloud database according to the parameters of the fed raw coal and initial data of each device of the sorting machine to obtain the optimal parameters of the current sorting turn, wherein the parameters comprise the feed quantity, the inclination angle of a bed surface, the amplitude and the vibration frequency of the bed surface and the air quantities of three air chambers for sorting clean coal, middlings and gangue;
step three: adjusting each process device of the composite dry separator according to the optimal parameters obtained in the step two, separating to obtain three products of clean coal, middlings and gangue, and conveying the products out through a belt;
step four: and determining the ash content and the yield of the three products after the raw coal is sorted, analyzing the optimum sorting parameters again, and adjusting each process equipment of the composite dry-method sorting machine again according to the optimum sorting parameters.
Further, in the third step, the regulation and control method of each process equipment is as follows:
controlling the feeding amount in unit time by adjusting the roller rotating speed of the belt conveyor according to the real-time monitored belt carrying capacity; calculating the required adjusting length of a steel wire rope of the hanging sorting bed according to the transverse and longitudinal inclination angle of the optimal bed surface, issuing a steel wire rope receiving and sending command, and adjusting the length of the steel wire rope after the steel wire rope receiving and sending motor receives the command;
controlling a motor to drive a butterfly valve to rotate according to the obtained air volume required by the three air chambers of the separator, and further controlling the air flow speed entering the three air chambers until the three air chambers all reach stable required air speed; controlling the amplitude and vibration frequency of the vibrator by adjusting the frequency converter;
judging whether the ash content of the three products meets the product requirements, if so, keeping the position of a product partition baffle of the sorting bed unchanged, namely keeping the position of a gear unchanged; if the requirements are not met, the motor is controlled to drive the gear to rotate to adjust the position of the baffle.
Further, in the third step, the inclination angle of the sorting bed surface is changed by mechanically receiving and sending the length of a steel wire rope for hanging the sorting bed: the steel wire rope at the feeding end of the sorting bed is fixed, the steel wire rope at the other end is lowered, and the transverse angle of the bed surface is regulated and controlled; the steel wire rope on one side of the back plate of the sorting bed is unchanged, the steel wire rope on the other side is placed, and the longitudinal angle is regulated and controlled:
the calculation method of the transverse angle and the longitudinal angle of the bed surface is as follows:
wherein α is the transverse angle of the bed surface, Delta H1The length difference of the steel wire ropes before and after the sorting bed, L is the bed length, β is the longitudinal angle of the bed surface, delta H2The length difference of the steel wire ropes on the left side and the right side of the sorting bed is shown, and D is the bed width.
Has the advantages that: compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:
the intelligent control method of the combined dry method separator can realize real-time detection of ash content, moisture content and other data of the fed raw coal and products through the ash content and moisture content online detector; the optimal separation efficiency of the separation process can be maintained by adjusting the inclination angle of the bed surface, the vibration amplitude and frequency of the bed surface, the air quantity of the three air chambers, the baffle angle of the material receiving groove and the like in time according to feeding and discharging data. The method is characterized in that the parameters of the sorting bed in the sorting process are adjusted according to the properties of raw coal and products to form two closed-loop automatic control systems, one is a feed-forward system for adjusting the coal sorting parameters according to the properties of the raw coal, and the other is a feedback system for adjusting the coal sorting parameters according to the properties of three products, and the method has the advantage of high intelligent degree.
Drawings
FIG. 1 is a diagram of an intelligent control system for a hybrid dry separator;
FIG. 2 is a flow diagram of the intelligent control of the hybrid dry classifier;
FIG. 3 is a control diagram of the transverse angle of the bed surface of the hybrid dry method classifier;
FIG. 4 is a longitudinal angle control diagram of the tabletop surface of the hybrid dry sorter.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
The intelligent control system of the combined dry method separator, disclosed by the invention, comprises an information acquisition module, an information analysis module, an information transmission module and an equipment control module, as shown in figure 1.
The information acquisition module is used for acquiring ash content, moisture content and feed quantity information of raw coal, ash content and yield information of separated clean coal, middlings and gangue, bed surface inclination angle information, three-air chamber air speed information, amplitude and vibration frequency information of a vibration motor of the separation bed and product partition baffle angle information;
respectively installing a set of ash and moisture online detector on the raw coal conveying belt and the product output belt, and detecting moisture and ash information of the fed raw coal and the product; a speed sensor is arranged on the belt conveyor and used for monitoring the feeding speed; installing a belt scale, and monitoring the coal carrying capacity of the belt in real time; the length of a steel wire rope of the hanging sorting bed is mechanically received and sent for collecting the inclination angle information of the bed surface; a flow sensor is arranged on the air supply pipeline and used for collecting the air volume of three air chambers for separating clean coal, middlings and gangue; a vibration sensor is arranged on the vibrating machine and used for collecting the amplitude and the vibration frequency of the sorting bed; the motor drives the gear for adjusting the position of the product dividing baffle.
The information analysis module is used for matching the optimal feeding quantity parameter, the sorting bed inclination angle parameter, the air chamber air speed parameter, the vibrating machine parameter and the product dividing baffle position by inquiring the cloud database according to the collected feeding raw coal parameter and the equipment parameters of the sorting bed. The information analysis module comprises a central processing unit and an external display.
The central processing unit is the core of the whole intelligent sorting system and is connected with a cloud database, the database comprises optimal sorting efficiency parameters of the composite dry-method sorting machine for various coal qualities, ash content and moisture content of the fed raw coal are collected in real time through an online detector and fed back to the central processing unit, and the processor obtains the optimal parameters for sorting the fed raw coal by matching the optimal sorting efficiency parameters in the database. The touch panel is used for observing the working states of each piece of process equipment and auxiliary equipment, controlling the start and stop of the equipment and manually modifying the operating parameters of the equipment.
The information transmission module is used for transmitting the data acquired by the information acquisition module to the information analysis module and transmitting the preset parameter values of each piece of equipment after information analysis to the regulation and control device of each piece of process equipment.
And the equipment control module is used for receiving the optimal equipment parameter value obtained by the information analysis module, controlling each process equipment and auxiliary equipment to make corresponding response and automatically adjusting.
The invention also provides an intelligent control method of the combined type dry separator, which comprises the following steps:
the method comprises the following steps: starting the composite dry method separator, feeding materials by a feeding belt, and detecting moisture data of the fed raw coal ash;
step two: performing data matching with a cloud database according to the parameters of the fed raw coal and initial data of each device of the sorting machine to obtain the optimal parameters of the current sorting turn, wherein the parameters comprise the feed quantity, the inclination angle of a bed surface, the amplitude and the vibration frequency of the bed surface and the air quantities of three air chambers for sorting clean coal, middlings and gangue;
step three: adjusting each process device of the composite dry separator according to the optimal parameters obtained in the step two, separating to obtain three products of clean coal, middlings and gangue, and conveying the products out through a belt;
the regulation and control method of each process device comprises the following steps:
controlling the feeding amount in unit time by adjusting the roller rotating speed of the belt conveyor according to the real-time monitored belt carrying capacity; calculating the required adjusting length of a steel wire rope of the hanging sorting bed according to the transverse and longitudinal inclination angle of the optimal bed surface, issuing a steel wire rope receiving and sending command, and adjusting the length of the steel wire rope after the steel wire rope receiving and sending motor receives the command;
the dip angle of the sorting bed surface is changed by mechanically receiving and sending the length of a steel wire rope of the hanging sorting bed: as shown in fig. 3, the steel wire rope at the feeding end of the sorting bed is fixed, the steel wire rope at the other end is lowered, and the transverse angle of the bed surface is regulated and controlled; as shown in fig. 4, the steel wire rope on one side of the back plate of the sorting bed is unchanged, the steel wire rope on the other side is lowered, and the longitudinal angle is regulated and controlled:
the calculation method of the transverse angle and the longitudinal angle of the bed surface is as follows:
wherein α is the transverse angle of the bed surface, Delta H1The length difference of the steel wire ropes before and after the sorting bed, L is the bed length, β is the longitudinal angle of the bed surface, delta H2The length difference of the steel wire ropes on the left side and the right side of the sorting bed is shown, and D is the bed width;
the composite dry separator has three air chambers, and the air is supplied by the main fan in a unified way; the blower compresses air and enters a pressure stabilizing tank, the pressure stabilizing tank outputs the air to form stable air flow, and the motor drives a butterfly valve to control the speed of the air flow entering the three air chambers; the switching degree of the butterfly valve is in linear relation with the air volume, the air volume required by the three air chambers is calculated, the motor is controlled to drive the butterfly valve to rotate, and the pipeline air volume information is fed back by the pipeline flow sensor until the three air chambers all reach stable required air speed;
the vibration amplitude and the vibration frequency of the vibrator are controlled by a frequency converter, and the vibration control system adjusts the vibration frequency and the vibration amplitude of the sorting bed through frequency conversion control;
the positions of three product division baffles of the sorting bed are adjusted by driving gears by motors, and the two motors respectively control the two baffles; the motor control system adjusts the size of a product receiving port through forward and reverse rotating gears, the output of three products is obtained by a belt scale and a speed sensor which are arranged on a product output conveyor belt in a simultaneous mode, ash is obtained by a moisture and ash online detector arranged on the product output conveyor belt, the sorting result is fed back to a central processing unit for further analysis, and if the required clean coal output is insufficient, the forward rotating gears and the clean coal receiving port are increased; if the quality is reduced due to excessive yield of the clean coal, the gears are rotated reversely, the clean coal receiving port is reduced, and the baffle adjusting methods for the other two products are as above; in conclusion, whether the ash content of the three products meets the product requirements is judged, and if so, the position of a product dividing baffle of the sorting bed is unchanged, namely the position of a gear is unchanged; if the requirements are not met, the motor is controlled to drive the gear to rotate to adjust the position of the baffle.
Step four: and determining the ash content and the yield of the three products after the raw coal is sorted, analyzing the optimum sorting parameters again, and adjusting each process equipment of the composite dry-method sorting machine again according to the optimum sorting parameters.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a combined type dry process sorter intelligence control system which characterized in that: the system comprises an information acquisition module, an information analysis module, an information transmission module and an equipment control module;
the information acquisition module is used for acquiring ash content, moisture content and feed quantity information of raw coal, sorted clean coal, middlings and gangue ash content and yield information, bed surface inclination angle information, three-air-chamber air speed information, sorting bed vibration motor amplitude and vibration frequency information and product dividing baffle angle information;
the information analysis module is used for matching the optimal feeding quantity parameter, the sorting bed inclination angle parameter, the air chamber air speed parameter, the vibrating machine parameter and the product dividing baffle position by inquiring the cloud database according to the collected feeding raw coal parameter and the equipment parameters of the sorting bed;
the information transmission module is used for transmitting the data acquired by the information acquisition module to the information analysis module and transmitting the preset parameter values of each piece of equipment after information analysis to the regulation and control device of each piece of process equipment;
and the equipment control module is used for receiving the optimal equipment parameter value obtained by the information analysis module, controlling each process equipment and auxiliary equipment to make corresponding response and automatically adjusting.
2. The intelligent control system of a hybrid dry separator of claim 1, wherein: the information acquisition module comprises an ash content and moisture online detector respectively arranged on a raw coal conveying belt and a product output belt and used for detecting moisture content and ash content information of raw coal fed and products;
a speed sensor is arranged on the belt conveyor and used for monitoring the feeding speed; installing a belt scale, and monitoring the coal carrying capacity of the belt in real time; the length of a steel wire rope of the hanging sorting bed is mechanically received and sent for collecting the inclination angle information of the bed surface;
a flow sensor is arranged on the air supply pipeline and used for collecting the air volume of three air chambers for separating clean coal, middlings and gangue; a vibration sensor is arranged on the vibrating machine and used for collecting the amplitude and the vibration frequency of the sorting bed; the motor drives the gear for adjusting the position of the product dividing baffle.
3. The intelligent control system of a hybrid dry separator as claimed in claim 1 or 2, wherein: the information analysis module comprises a central processing unit and an external display;
the central processing unit is connected with a cloud database, the database comprises optimal separation efficiency parameters of the composite dry separator for various coal qualities, and the central processing unit is used for receiving real-time collected data, matching the optimal separation efficiency parameters in the database according to moisture data of the fed raw coal ash, and obtaining the optimal parameters for the current fed raw coal to be separated; the touch panel is used for observing the working states of each piece of process equipment and auxiliary equipment, controlling the start and stop of the equipment and manually modifying the operating parameters of the equipment.
4. A composite dry method separator intelligent control method is characterized in that: the method comprises the following steps:
the method comprises the following steps: starting the composite dry method separator, feeding materials by a feeding belt, and detecting moisture data of the fed raw coal ash;
step two: performing data matching with a cloud database according to the parameters of the fed raw coal and initial data of each device of the sorting machine to obtain the optimal parameters of the current sorting turn, wherein the parameters comprise the feed quantity, the inclination angle of a bed surface, the amplitude and the vibration frequency of the bed surface and the air quantities of three air chambers for sorting clean coal, middlings and gangue;
step three: adjusting each process device of the composite dry separator according to the optimal parameters obtained in the step two, separating to obtain three products of clean coal, middlings and gangue, and conveying the products out through a belt;
step four: and determining the ash content and the yield of the three products after the raw coal is sorted, analyzing the optimum sorting parameters again, and adjusting each process equipment of the composite dry-method sorting machine again according to the optimum sorting parameters.
5. The intelligent control method of a hybrid dry separator as claimed in claim 4, wherein: and step three, the regulation and control method of each process device is as follows:
controlling the feeding amount in unit time by adjusting the roller rotating speed of the belt conveyor according to the real-time monitored belt carrying capacity; calculating the required adjusting length of a steel wire rope of the hanging sorting bed according to the transverse and longitudinal inclination angle of the optimal bed surface, issuing a steel wire rope receiving and sending command, and adjusting the length of the steel wire rope after the steel wire rope receiving and sending motor receives the command;
controlling a motor to drive a butterfly valve to rotate according to the obtained air volume required by the three air chambers of the separator, and further controlling the air flow speed entering the three air chambers until the three air chambers all reach stable required air speed; controlling the amplitude and vibration frequency of the vibrator by adjusting the frequency converter;
judging whether the ash content of the three products meets the product requirements, if so, keeping the position of a product partition baffle of the sorting bed unchanged, namely keeping the position of a gear unchanged; if the requirements are not met, the motor is controlled to drive the gear to rotate to adjust the position of the baffle.
6. The intelligent control method of the composite dry separator according to claim 4 or 5, wherein: and step three, changing the inclination angle of the sorting bed surface by mechanically receiving and sending the length of a steel wire rope of the hanging sorting bed: the steel wire rope at the feeding end of the sorting bed is fixed, the steel wire rope at the other end is lowered, and the transverse angle of the bed surface is regulated and controlled; the steel wire rope on one side of the back plate of the sorting bed is unchanged, the steel wire rope on the other side is placed, and the longitudinal angle is regulated and controlled:
the calculation method of the transverse angle and the longitudinal angle of the bed surface is as follows:
wherein α is the transverse angle of the bed surface, Delta H1The length difference of the steel wire ropes before and after the sorting bed, L is the bed length, β is the longitudinal angle of the bed surface, delta H2The length difference of the steel wire ropes on the left side and the right side of the sorting bed is shown, and D is the bed width.
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