CN111940288B - Control equipment and method for realizing adaptive horizontal equal-thickness screening of roller screen - Google Patents
Control equipment and method for realizing adaptive horizontal equal-thickness screening of roller screen Download PDFInfo
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- CN111940288B CN111940288B CN202010668657.0A CN202010668657A CN111940288B CN 111940288 B CN111940288 B CN 111940288B CN 202010668657 A CN202010668657 A CN 202010668657A CN 111940288 B CN111940288 B CN 111940288B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
- B07B1/14—Roller screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- Combined Means For Separation Of Solids (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
The invention discloses a control device and a method for realizing self-adaptive horizontal equal-thickness screening of a roller screen, wherein the control device comprises the roller screen consisting of a screen box, a screen shaft, a driving motor and a base, a monitoring system consisting of a material distribution monitoring sensor, a speed measuring sensor, a blanking monitoring device and a data acquisition module, and a control system consisting of a data processing module and a motor controller, wherein the screen shaft is horizontally arranged on the roller screen, and the driving motor outputs a specific rotating speed to respectively drive the screen shaft to rotate, so that the equal-thickness screening of the roller screen on the horizontal screen surface is realized, and the size of a screen body is reduced; the monitoring system carries out on-line monitoring on the working parameters of the roller screen, and the control system carries out analysis and processing and adjusts the rotating speed of the driving motor, so that the roller screen is adaptive to horizontal equal-thickness screening, the screening efficiency is improved, and the energy consumption is reduced.
Description
Technical Field
The invention relates to the field of material screening and automatic control, in particular to control equipment and a method for realizing adaptive horizontal equal-thickness screening of a roller screen.
Background
In recent years, with the popularization of dense medium coal separation technology and the construction of large-scale coal separation plants, the equal-thickness screen is increasingly widely applied due to the advantages of large treatment capacity, high efficiency, reliable performance and the like. The presentation form of the equal-thickness screen is mainly a vibrating screen or a roller screen which is composed of a plurality of sections of screen surfaces with different inclination angles or a banana-shaped screen surface, wherein the roller screen is used as a screening machine which is widely used for a coal conveying system and a screening system and plays an important role in green mining of coal. The core problem of the constant-thickness roller screen is how to reduce the size of the screen body, improve the screening efficiency and reduce the energy consumption. The screen surface of the existing large-sized equal-thickness roller screen is changed into a banana-shaped multi-curve arrangement to realize equal-thickness screening, the screen body is large in size, in the actual production process, the working condition is complex, and the screened materials have a series of conditions of various types, uneven feeding, uneven humidity and the like, so that the roller screen is poor in working state, and the problems of material blockage, blockage and the like easily occur.
Disclosure of Invention
The invention aims to provide control equipment for realizing self-adaptive horizontal equal-thickness screening of a roller screen.
The invention also aims to provide a method for realizing self-adaptive horizontal equal-thickness screening of the roller screen based on the control equipment.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a control device for realizing self-adaptive horizontal equal-thickness screening of a roller screen comprises the roller screen, a monitoring system and a control system,
the roller screen comprises a screen box body and a base, the screen box body is fixed on the base, the screen box body comprises a screen box top plate, two screen box side plates and a horizontal screen surface which are oppositely arranged, the horizontal screen surface is formed by arranging a plurality of screen shafts in parallel at equal intervals, the screen shafts are respectively driven by respective driving motors, screen sheets are arranged on the screen shafts, and screen holes are formed by the screen sheets and gaps between the screen sheets and the screen shafts,
the monitoring system comprises material distribution monitoring sensors, speed measuring sensors, blanking monitoring devices and a data acquisition module, wherein the material distribution monitoring sensors are arranged on a top plate of a screen box right above a horizontal screen surface, a plurality of speed measuring sensors are uniformly arranged along the length direction of the top plate of the screen box at intervals, the speed measuring sensors are arranged on screen shafts, one speed sensor is arranged on each screen shaft, the blanking monitoring devices are arranged right below the horizontal screen surface, a plurality of speed measuring sensors are uniformly arranged along the length direction of the horizontal screen surface at intervals, the material distribution monitoring sensors, the speed measuring sensors and the blanking monitoring devices are respectively and electrically connected with the input end of the data acquisition module,
the control system comprises a data processing module and a motor controller, wherein the output end of the data acquisition module is electrically connected with the input end of the data processing module, the output end of the data processing module is electrically connected with the input end of the motor controller, and the output end of the motor controller is electrically connected with each driving motor.
Preferably, the speed measuring sensor is installed at one end of the sieve shaft far away from the driving motor.
Preferably, the two ends of the sieve shaft are respectively fixed with the sieve box side plates on the two sides, and one end of the sieve shaft extends out of the sieve box side plates and then is in transmission connection with the driving motor.
Preferably, the arrangement number of the material distribution monitoring sensors is determined by the structure of the screen box and the control precision.
Preferably, the arrangement number of the blanking monitoring devices is determined by the structure of the screen box and the control precision.
The invention also provides a control method for realizing self-adaptive horizontal equal-thickness screening of the roller screen by using the equipment, which comprises the following steps:
step one, setting the initial rotating speed of each driving motor, starting the driving motors, enabling materials to fall onto a horizontal screen surface from a feeding end of a screen box body, and enabling the materials to flow above a screen shaft and pass through the screen under the driving of the driving motors; the rotating speed distribution of the driving motor is reasonable, so that the flow speed of materials on the screen surface is gradually reduced from the feeding hole to the discharging hole and is uniformly distributed on the screen surface, and horizontal equal-thickness screening is realized;
monitoring the material distribution condition on the screen surface by using a material distribution monitoring sensor, monitoring the rotating speed of each screen shaft by using a speed measuring sensor, monitoring the blanking distribution condition under the screen surface by using a blanking monitoring device, and transmitting respective monitoring data to a data processing module through a data acquisition module for analysis and processing;
thirdly, when the sudden drop of the rotating speed of a certain sieve shaft is monitored, the material jamming is judged to occur, the data processing module controls a driving motor of the material control sieve shaft to rotate reversely for a short time through a motor controller to adjust the position of the foreign matter, and then the forward rotation is recovered to solve the problem of material jamming; when the distribution of the materials on the screen surface and the distribution of the materials under the screen surface are monitored to change, the working condition is judged to change, and the data processing module adjusts the rotating speed of the driving motor through the motor controller, so that the roller screen realizes self-adaptive horizontal equal-thickness screening; in the regulation and control process, the problem of material blockage is preferably treated, and self-adaptive equal-thickness speed regulation is carried out under the condition of ensuring normal work.
The screen shaft on the roller screen is horizontally arranged to form a horizontal screen surface, the screen pieces are arranged on the screen shaft, the screen pieces and the gaps between the screen pieces and the screen shaft form screen holes, and the driving motor drives the screen shaft to rotate so that materials flow above the screen shaft and pass through the screen. The motion condition of the materials on the screen surface is related to the rotating speed of the screen shaft, and the driving motor outputs specific rotating speed distribution to drive the screen shaft to rotate, so that the flow speed of the materials on the screen surface is gradually reduced from the feeding hole to the discharging hole and is uniformly distributed on the screen surface, the horizontal equal-thickness screening of the roller screen is realized, and the size of the screen body of the roller screen is reduced. In the screening process, the material distribution monitoring sensor, the speed measuring sensor and the blanking monitoring device are used for monitoring the material distribution on the screen surface, the rotating speed of the screen shaft and the material distribution under the screen surface in the screening process of the roller screen, and monitoring data are transmitted to the data processing module through the data acquisition module to be analyzed and processed.
When material blocking occurs, the rotation speed of the sieve shaft is suddenly reduced, so that the material blocking is judged, the data processing module controls the driving motor of the sieve shaft for material control through the motor controller to rotate reversely for a short time to adjust the position of foreign matters, and then the normal rotation is recovered to solve the problem of material blocking; when working conditions such as treatment capacity and the like change, the material distribution on the screen surface and the material distribution under the screen surface change, and the data processing module adjusts the rotating speed of the driving motor through the motor controller, so that the roller screen realizes ideal equal-thickness screening, the screening efficiency is improved, and the energy consumption is reduced. In the regulation and control process, the problem of material blockage is preferably treated, and self-adaptive equal-thickness speed regulation is carried out under the condition of ensuring normal work.
Compared with the prior art, the horizontal equal-thickness screening of the roller screen is realized by adjusting the rotation speed of the screen shaft, the screen body size is reduced, the mechanical structure is simplified, the manufacturing cost is reduced, the online monitoring and the self-adaptive adjustment are carried out on the screening process of the roller screen through the monitoring system and the control system, the problem of material clamping of the roller screen is solved, the screening efficiency is improved, the energy consumption is reduced, and compared with the prior art, the automatic and intelligent degrees are high, and the safety of operators is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of a control device for realizing an adaptive horizontal equal-thickness screening roller screen according to the present invention;
FIG. 2 is a schematic view of the horizontal screening surface of the roller screen of FIG. 1;
FIG. 3 is a control schematic diagram of the adaptive horizontal equal thickness screening roller screen of the present invention;
in the figure: 1-a screen box body, 101-a screen box side plate, 102-a screen box top plate, 2-a screen shaft, 201-a screen sheet, 202-a screen hole, 3-a driving motor, 4-a base, 5-a material distribution monitoring sensor, 6-a speed measuring sensor and 7-a blanking monitoring device.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1, the present invention provides a control device for realizing adaptive horizontal equal-thickness screening of a roller screen, which comprises a roller screen, a monitoring system and a control system.
Roller screen is including sieve case body 1 and base 4, sieve case body 1 is fixed on base 4, sieve case body 1 is including sieve case roof 102, two sieve case curb plate 101 and the horizontal sifting surface that set up relatively, the horizontal sifting surface comprises many parallel equidistant range of sieve axle 2, and every sieve axle 2 drives by respective driving motor 3 respectively, in this embodiment, the both ends of sieve axle 2 are fixed with the sieve case curb plate 101 of both sides respectively, just the one end of sieve axle 2 is connected with driving motor 3 transmission after stretching out sieve case curb plate 101. As shown in fig. 2, the sieve shaft 2 is provided with sieve sheets 201, gaps between the sieve sheets 201 and between the sieve sheets 201 and the sieve shaft 2 form sieve holes 202, and materials flow on a horizontal sieve surface while passing through the sieve; the driving motor 3 outputs different rotating speeds to drive the screen shaft 2 to rotate, the material flow speed on the screen surface is gradually reduced from the feed inlet to the discharge outlet through specific rotating speed distribution, and the material flow speed is uniformly distributed on the horizontal screen surface, so that the horizontal equal-thickness screening of the roller screen is realized, and the screen body volume of the equal-thickness roller screen is reduced.
The monitoring system comprises material distribution monitoring sensors 5, speed measuring sensors 6, blanking monitoring devices 7 and a data acquisition module, wherein the material distribution monitoring sensors 5 are installed on a screen box top plate 102 right above a horizontal screen surface, a plurality of sensors are evenly arranged along the length direction of the screen box top plate 102 at intervals, the specific arrangement number is determined by the structure and the control precision of a screen box, the speed measuring sensors 6 are installed on screen shafts 2, one sensor is arranged on each screen shaft 2, the blanking monitoring devices 7 are installed right below the horizontal screen surface, a plurality of sensors are evenly arranged along the length direction of the horizontal screen surface at intervals, the specific arrangement number is determined by the structure and the control precision of the screen box, and the material distribution monitoring sensors 5, the speed measuring sensors 6 and the blanking monitoring devices 7 are respectively and electrically connected with the input end of the data acquisition module; the material distribution monitoring sensor 5 monitors the material distribution condition on the horizontal screen surface, the speed sensor 6 monitors the rotating speed of each screen shaft 2, and the blanking monitoring device 7 monitors the blanking distribution condition in the screening process of the roller screen, so that the on-line monitoring of the working process of the roller screen is realized.
The control system comprises a data processing module and a motor controller, wherein the output end of the data acquisition module is electrically connected with the input end of the data processing module, the output end of the data processing module is electrically connected with the input end of the motor controller, and the output end of the motor controller is electrically connected with each driving motor 3; the data processing module receives monitoring data from the data acquisition module, and the output rotating speed of the driving motor 3 is adaptively adjusted through the motor controller, so that adaptive horizontal equal-thickness screening of the roller screen is realized.
The control method for realizing the self-adaptive horizontal equal-thickness screening of the roller screen by using the equipment comprises the following steps as shown in figure 3:
step one, setting the initial rotating speed of each driving motor 3, starting the driving motors 3, enabling materials to fall onto a horizontal screen surface from the feeding end of a screen box body 1, and enabling the materials to flow above a screen shaft 2 and pass through the screen under the driving of the driving motors 3; the rotating speed distribution of the driving motor 3 is reasonable, so that the material flow speed on the screen surface is gradually reduced from the feeding hole to the discharging hole and is uniformly distributed on the screen surface, and horizontal equal-thickness screening is realized;
monitoring the material distribution condition on the screen surface by using a material distribution monitoring sensor 5, monitoring the rotating speed of each screen shaft 2 by using a speed measuring sensor 6, monitoring the material distribution condition under the screen surface by using a blanking monitoring device 7, and transmitting respective monitoring data to a data processing module through a data acquisition module for analysis processing;
thirdly, when the sudden drop of the rotating speed of a certain sieve shaft 2 is monitored, the material jamming is judged to occur, the data processing module controls the driving motor 3 of the material control sieve shaft 2 to rotate reversely for a short time through the motor controller to adjust the position of the foreign matter, and then the normal rotation is recovered to solve the problem of material jamming; when the distribution of the materials on the screen surface and the distribution of the materials under the screen surface are monitored to change, the working condition is judged to change, and the data processing module adjusts the rotating speed of the driving motor 3 through a motor controller, so that the roller screen realizes self-adaptive horizontal equal-thickness screening; in the regulation and control process, the problem of material blockage is preferably treated, and self-adaptive equal-thickness speed regulation is carried out under the condition of ensuring normal work.
Claims (6)
1. The utility model provides a realize controlgear of roller screen self-adaptation level uniform thickness screening which characterized in that: comprises a roller screen, a monitoring system and a control system,
the roller screen comprises a screen box body (1) and a base (4), the screen box body (1) is fixed on the base (4), the screen box body (1) comprises a screen box top plate (102), two oppositely arranged screen box side plates (101) and a horizontal screen surface, the horizontal screen surface is formed by arranging a plurality of screen shafts (2) in parallel at equal intervals, the screen shafts (2) are respectively driven by respective driving motors (3), screen pieces (201) are arranged on the screen shafts (2), gaps between the screen pieces (201) and between the screen pieces (201) and the screen shafts (2) form screen holes (202), and materials flow on the horizontal screen surface while passing through the screen; the driving motor (3) outputs different rotating speeds to drive the sieve shaft (2) to rotate, the material flow speed on the sieve surface is gradually reduced from the feed inlet to the discharge outlet through specific rotating speed distribution and is uniformly distributed on the horizontal sieve surface, thereby realizing horizontal equal-thickness sieving of the roller sieve, reducing the size of the sieve body of the equal-thickness roller sieve,
the monitoring system comprises material distribution monitoring sensors (5), a speed measuring sensor (6), a blanking monitoring device (7) and a data acquisition module, wherein the material distribution monitoring sensors (5) are arranged on a screen box top plate (102) right above a horizontal screen surface, a plurality of sensors are uniformly arranged along the length direction of the screen box top plate (102) at intervals, the speed measuring sensors (6) are arranged on screen shafts (2), one sensor is arranged on each screen shaft (2), the blanking monitoring device (7) is arranged right below the horizontal screen surface, a plurality of sensors are uniformly arranged along the length direction of the horizontal screen surface at intervals, the material distribution monitoring sensors (5), the speed measuring sensor (6) and the blanking monitoring device (7) are respectively and electrically connected with the input end of the data acquisition module,
the control system comprises a data processing module and a motor controller, wherein the output end of the data acquisition module is electrically connected with the input end of the data processing module, the output end of the data processing module is electrically connected with the input end of the motor controller, and the output end of the motor controller is electrically connected with each driving motor (3); the data processing module receives monitoring data from the data acquisition module, and the output rotating speed of the driving motor (3) is adaptively adjusted through the motor controller, so that adaptive horizontal equal-thickness screening of the roller screen is realized.
2. The control equipment for realizing the adaptive horizontal equal-thickness screening of the roller screen according to the claim 1, characterized in that: the speed measuring sensor (6) is arranged at one end, far away from the driving motor (3), of the sieve shaft (2).
3. The control equipment for realizing the adaptive horizontal equal-thickness screening of the roller screen according to the claim 1, characterized in that: the two ends of the sieve shaft (2) are respectively fixed with the sieve box side plates (101) on the two sides, and one end of the sieve shaft (2) extends out of the sieve box side plates (101) and then is in transmission connection with the driving motor (3).
4. The control equipment for realizing the adaptive horizontal equal-thickness screening of the roller screen according to the claim 1, characterized in that: the arrangement number of the material distribution monitoring sensors (5) is determined by the structure of the sieve box and the control precision.
5. The control equipment for realizing the adaptive horizontal equal-thickness screening of the roller screen according to the claim 1, characterized in that: the arrangement number of the blanking monitoring devices (7) is determined by the structure of the screen box and the control precision.
6. A control method for realizing adaptive horizontal equal-thickness screening of a roller screen by using the device of any one of claims 1 to 5, which is characterized by comprising the following steps: the method comprises the following steps:
step one, setting the initial rotating speed of each driving motor (3), starting the driving motors (3), enabling materials to fall onto a horizontal screen surface from the feeding end of a screen box body (1), and enabling the materials to flow above a screen shaft (2) and pass through a screen under the driving of the driving motors (3); the rotating speed distribution of the driving motor (3) is reasonable, so that the material flow speed on the screen surface is gradually reduced from the feeding hole to the discharging hole and is uniformly distributed on the screen surface, and horizontal equal-thickness screening is realized;
monitoring the material distribution condition on the screen surface by using a material distribution monitoring sensor (5), monitoring the rotating speed of each screen shaft (2) by using a speed measuring sensor (6), monitoring the material distribution condition under the screen surface by using a blanking monitoring device (7), and transmitting respective monitoring data to a data processing module through a data acquisition module for analysis and processing;
thirdly, when the sudden drop of the rotating speed of a certain sieve shaft (2) is monitored, the material jamming is judged to occur, the data processing module controls the driving motor (3) of the material control sieve shaft (2) to rotate reversely for a short time through the motor controller to adjust the position of the foreign matter, and then the forward rotation is recovered to solve the problem of material jamming; when the change of the material distribution on the screen surface and the change of the material distribution under the screen surface are monitored, the change of the working condition is judged, and the data processing module adjusts the rotating speed of the driving motor (3) through the motor controller, so that the roller screen realizes the self-adaptive horizontal equal-thickness screening; in the regulation and control process, the problem of material blockage is preferably treated, and self-adaptive equal-thickness speed regulation is carried out under the condition of ensuring normal work.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010668657.0A CN111940288B (en) | 2020-07-13 | 2020-07-13 | Control equipment and method for realizing adaptive horizontal equal-thickness screening of roller screen |
| PCT/CN2021/098834 WO2022012219A1 (en) | 2020-07-13 | 2021-06-08 | Control system and method for realizing adaptive horizontal equal-thickness screening of roller screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010668657.0A CN111940288B (en) | 2020-07-13 | 2020-07-13 | Control equipment and method for realizing adaptive horizontal equal-thickness screening of roller screen |
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| CN111940288A CN111940288A (en) | 2020-11-17 |
| CN111940288B true CN111940288B (en) | 2022-05-13 |
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| CN202010668657.0A Active CN111940288B (en) | 2020-07-13 | 2020-07-13 | Control equipment and method for realizing adaptive horizontal equal-thickness screening of roller screen |
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| WO (1) | WO2022012219A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940288B (en) * | 2020-07-13 | 2022-05-13 | 中国矿业大学 | Control equipment and method for realizing adaptive horizontal equal-thickness screening of roller screen |
| CN115301528B (en) * | 2022-08-18 | 2023-03-28 | 安徽华星选矿科技有限公司 | Toothed roller type sine roller screen for ore |
| CN115770721A (en) * | 2022-11-01 | 2023-03-10 | 河北邯峰发电有限责任公司 | Parabola type anti-blocking roller screen device |
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| CN207851097U (en) * | 2017-12-07 | 2018-09-11 | 西安航天自动化股份有限公司 | A kind of roller bearing screening machine screen axis rotational speed monitor system |
| CN208583584U (en) * | 2018-05-17 | 2019-03-08 | 张家口博远机械有限公司 | A kind of Iron Ore Powder screening plant of roll |
| CN209373410U (en) * | 2018-12-13 | 2019-09-10 | 沈阳工程学院 | A kind of intelligence control system for screw distribution batcher |
| CN110773424A (en) * | 2019-10-12 | 2020-02-11 | 中国矿业大学 | Automatic control system and method for solving problem of foreign matter jamming of roller screen |
| CN111014001A (en) * | 2019-12-30 | 2020-04-17 | 苏州嘉诺环境工程有限公司 | Roller screen and material blocking prevention method of roller screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111940288A (en) | 2020-11-17 |
| WO2022012219A1 (en) | 2022-01-20 |
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