CN115382653B - Feeding control method of scrap steel feeding machine - Google Patents
Feeding control method of scrap steel feeding machine Download PDFInfo
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- CN115382653B CN115382653B CN202211014256.9A CN202211014256A CN115382653B CN 115382653 B CN115382653 B CN 115382653B CN 202211014256 A CN202211014256 A CN 202211014256A CN 115382653 B CN115382653 B CN 115382653B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000009471 action Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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- 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
Abstract
The invention discloses a feeding control method of a steel scrap feeding machine, and relates to the technical field of crushers. The method comprises the steps of collecting the current scrap steel conveying weight in a preset range on a conveyor, and collecting the current of a driving motor for driving a crusher to crush, so that the rotating speed of an engine for driving the conveyor to operate and the feeding speed for driving double feeding rollers are determined according to the current scrap steel conveying weight and the current of the driving motor. The invention forms double closed-loop control, quickens the response time of the system, reduces manual error actions, realizes full-automatic feeding control, and avoids the blocking of the crusher or the damage of the machine, thereby improving the working stability of the crusher and the crushing efficiency.
Description
Technical Field
The invention relates to the technical field of crushers, in particular to a feeding control method of a scrap steel feeding machine.
Background
At present, the crusher is widely applied in the field of scrap steel. The crushing main machine is driven by the hydraulic motor or the motor, the eccentric shaft rotates at a high speed, and the jaw moving device is driven to reciprocate according to a preset track, so that materials entering the crushing cavity are crushed by extrusion, and finished materials are discharged through a discharge hole at the lower part.
The crusher is generally fed by a feeding system, and the feeding speed can influence the working efficiency of the crusher. If a proper amount of feed materials are fed, the waste steel uniformly enters the crushing cavity, and the crusher can achieve higher working efficiency; if the feeding speed is too high, the load of the crusher is too high, the service life of the crusher is reduced, and blocking is generated when the service life is serious; if the feeding speed is too slow, the working efficiency of the crusher is reduced, the energy consumption is increased, and the production cost is increased.
The feeding speed is achieved by monitoring the engine speed by manual operation, and the speed after completion of setting is generally unchanged. When the change of the engine speed is observed in real time by a worker or congestion occurs in the feeding process, the machine is stopped to work, and the feeding speed is reset. Therefore, the feeding speed can not be regulated according to actual conditions, the blockage or the waste of energy sources are easily caused, and the service life of the crusher is reduced
Disclosure of Invention
In order to solve one or more of the above problems, the present invention proposes a feeding control method of a scrap steel feeding machine.
The invention adopts the technical scheme that: the feeding control method of the scrap steel feeding machine comprises the following steps:
collecting the current scrap steel conveying weight in a preset range of the conveyor;
collecting current of a driving motor for driving the crusher to crush;
and determining the rotating speed of an engine for driving the conveyor to operate and the feeding speed for driving the double feeding rollers according to the current scrap steel conveying weight and the current of the driving motor.
In some implementations, before the step of collecting the current scrap conveying weight of the predetermined range stretch on the conveyor, further comprising:
the input set feeding parameters comprise: the rated rotation speed of the transmitter driving the conveyor to operate, the rated feeding speed driving the double feeding rollers, the preset weight range for conveying the scrap steel and the preset current range of the crusher.
In some realizable modes, the feeding control method is applied to an industrial personal computer, and the industrial personal computer is connected with a conveying system and a feeding system, wherein the conveying system comprises a conveyor and a first frequency converter for driving the conveyor to move, and the feeding system comprises a double feeding roller and a second frequency converter for driving the double feeding roller to move; the method comprises the following steps:
judging whether the current steel scrap conveying quality is beyond a preset weight range;
judging whether the current of a driving motor for driving the crusher to crush is larger than a preset current range;
outputting a first control instruction under the condition that the current scrap steel conveying weight exceeds a preset range and the current of a driving motor for driving the crusher to crush is larger than the preset current range;
the first frequency converter controls the conveyor to switch to a low-speed operation mode according to the received first control instruction;
the second frequency converter controls the double feed rollers of the feed system to operate in a low-speed mode according to the received first control instruction;
outputting a fifth control instruction until the collected scrap steel conveying weight belongs to a preset range and the collected current of a driving motor for driving the crusher to be crushed simultaneously belongs to a preset current range, and controlling the corresponding conveyor and the switching double-feed roller to be switched to a uniform speed operation mode by the first frequency converter and the second frequency converter according to the received fifth control instruction.
In some realizable modes, judging whether the current of the collected driving motor for driving the crusher to crush is larger than a preset current range or not in the step, and outputting a second control instruction under the condition that the current scrap steel conveying weight is lower than the preset range and the current of the collected driving motor for driving the crusher to crush is lower than the preset current range;
the first frequency converter controls the conveyor to switch to a high-speed operation mode according to the received second control instruction;
and the second frequency converter controls the double feeding rollers of the feeding system to operate in a high-speed mode according to the received second control instruction.
In some realizable modes, outputting a third control instruction when the current scrap steel conveying weight is higher than a preset range and the current of a driving motor for driving the crusher to crush is lower than the preset current range;
the first frequency converter controls the conveyor to be switched to a low-speed operation mode according to the received third control instruction;
and the second frequency converter controls the double feeding rollers of the feeding system to operate in a high-speed mode according to the received third control instruction.
In some realizable modes, in the step of judging whether the current of the collected driving motor for driving the crusher to crush is larger than a preset current range, the method further comprises the step of collecting the running speed of the conveyor and the speed of the double feeding rollers under the condition that the current of the collected driving motor for driving the crusher to crush is lower than the preset range and the current of the collected driving motor for driving the crusher to crush is higher than the preset current range, and controlling the crusher and the feeder to stop when the running speeds of the conveyor and the double feeding rollers are both low.
In some implementations, the method further includes: and calculating the current duration time of the crusher driving motor, and executing the corresponding next operation under the condition that each current is not in the range of the preset ground current and the current duration time exceeds the preset time.
On the other hand, the invention provides a feeding control system of a scrap steel feeding machine, which is applied to an industrial personal computer, wherein the industrial personal computer is connected with a conveying system and a feeding system, the conveying system comprises a conveyor, a first frequency converter for driving the conveyor to move and a belt scale weight sensor, the feeding system comprises a double feeding roller and a second frequency converter for driving the double feeding roller to move,
the belt conveyor comprises a belt scale weight sensor, a first speed sensor, a second speed sensor and a double-feeding roller, wherein the belt scale weight sensor is used for detecting the weight value of scrap steel on a conveyor; the current sensor is used for detecting the value of the driving motor of the crusher, and the industrial personal computer is connected with the conveying system and the feeding system and used for executing the feeding control method of the scrap steel feeding machine.
The invention has the following benefits:
compared with the prior art, the invention collects the current scrap steel conveying weight in the preset range of the conveyor and the current of the driving motor for driving the crusher to crush, thereby determining the rotating speed of the engine for driving the conveyor to operate and the feeding speed for driving the double feeding rollers according to the current scrap steel conveying weight and the current of the driving motor, forming double closed loop control, accelerating the response time of the system, reducing the manual error action, realizing full-automatic feeding control, avoiding the blockage of the crusher or the damage of the machine, improving the working stability of the crusher and improving the crushing efficiency.
Drawings
FIG. 1 is a flow chart of a method of controlling feeding of a scrap steel feeder of the present invention;
FIG. 2 is a flow chart of another embodiment of a method of controlling feeding of a scrap steel feeder of the present invention;
FIG. 3 is a flow chart of another embodiment of a method of controlling feeding of a scrap steel feeder of the present invention;
FIG. 4 is a flow chart of another embodiment of a method of controlling feeding of a scrap steel feeder of the present invention;
FIG. 5 is a flow chart of another embodiment of the method of controlling feeding of the scrap steel feeder of the present invention.
Detailed Description
In order to explain in detail the technical solutions adopted by the present invention to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that technical means or technical features in the embodiments of the present invention may be replaced without inventive effort, and the present invention will be described in detail below with reference to the accompanying drawings in combination with the embodiments.
Example 1
FIG. 1 is a flow chart of a method for controlling feeding of a scrap steel feeder according to an embodiment of the present invention; the invention provides a feeding control method of a steel scrap feeding machine, which is applied to an industrial personal computer, wherein the industrial personal computer is connected with a conveying system and a feeding system, the conveying system comprises a conveyor and a first frequency converter for driving the conveyor to move, and the feeding system comprises a double feeding roller and a second frequency converter for driving the double feeding roller to move; before starting feeding, setting feeding parameters input on an industrial personal computer, wherein the feeding parameters comprise: the rated rotation speed of a transmitter for driving the conveyor to operate, the rated feeding speed for driving the double feeding rollers, the preset weight range for conveying the scrap steel and the preset current range of the crusher are used for controlling the output frequency of the corresponding frequency converter,
as shown in fig. 1, the feeding control method of the scrap steel feeding machine specifically comprises the following steps:
s100, collecting the current scrap steel conveying weight in a preset range of the conveyor, wherein a belt scale weight sensor is arranged at the position 0.2-0.3 m in front of a double-material feeding roller of the conveyor, and the belt scale flow sensor can comprise a load sensor, an evaluation unit and an integrator and is used for monitoring the scrap steel weight on the belt conveyor in real time; the measurement is typically delayed by 10 seconds before it can be measured by the belt scale, and thus there is hysteresis, so that at least 10 seconds have elapsed for each adjustment of the drive speed.
S200, collecting current of a driving motor for driving the crusher to crush;
s300, determining the rotating speed of an engine for driving the conveyor to operate and the feeding speed for driving the double feeding rollers according to the current scrap steel conveying weight and the current of the driving motor.
In this embodiment, an industrial personal computer may be used as a controller for control, for example, a programmable logic controller PLC. The motor of the crusher is provided with a current sensor which can be Huo Ni current sensor for monitoring the current of the crusher in real time. When the crusher breaks, the current sensor can acquire a current value in real time and send the current value to the industrial personal computer, and the industrial personal computer can obtain the implementation current of the crusher according to the current sensor, so that the feeding speed of the feeder can be correspondingly controlled.
In the embodiment, when the feeder feeds the crusher, the industrial personal computer can automatically realize the optimal feeding speed according to the current of the crusher and the current scrap steel conveying weight, so that crushing blockage or machine paralysis can not be caused, and the stable operation of the crusher is ensured
In another embodiment, as shown in fig. 2, the present invention provides a feeding control method of a scrap steel feeding machine, the method comprising:
s100, collecting the current scrap steel conveying weight in a preset range of the conveyor;
s200, judging whether the current collected scrap steel conveying quality exceeds a preset weight range;
s300, judging whether the current of a driving motor for driving the crusher to crush is greater than a preset current range;
s400, outputting a first control instruction when the current scrap steel conveying weight exceeds a preset range and the current of a driving motor for driving the crusher to crush is larger than the preset current range, wherein the first frequency converter and the second frequency converter operate according to the first control instruction, and the method specifically comprises the steps of;
the first frequency converter controls the conveyor to switch to a low-speed operation mode according to the received first control instruction;
the second frequency converter controls the double feed rollers of the feed system to operate in a low-speed mode according to the received first control instruction;
s500, outputting a fifth control instruction until the collected scrap steel conveying weight belongs to a preset range and the collected current of a driving motor for driving the crusher to be in a preset current range, and controlling the corresponding conveyor and switching the double-feeding roller to be switched to a uniform speed running mode by the first frequency converter and the second frequency converter according to the received fifth control instruction.
In another embodiment, as shown in fig. 3, the method further includes a step s401 of outputting a second control command when the current scrap steel conveying weight is lower than a preset range and the current of a driving motor for driving the crusher to crush is lower than the preset current range;
the first frequency converter controls the conveyor to switch to a high-speed operation mode according to the received second control instruction;
the second frequency converter controls the double feed rollers of the feed system to operate in a high-speed mode according to the received second control instruction, and similarly, a fifth control instruction is output until the condition that the collected scrap steel conveying weight belongs to a preset range and the collected current of a driving motor for driving the crusher to be broken simultaneously belongs to a preset current range is achieved, and the first frequency converter and the second frequency converter both control the corresponding conveyor and switch the double feed rollers to be switched to a uniform speed operation mode according to the received fifth control instruction.
In another embodiment, as shown in fig. 4, the method further includes step s402, outputting a third control command when the current steel scrap conveying weight is higher than a preset range and the current of a driving motor for driving the crusher to crush is lower than the preset current range;
the first frequency converter controls the conveyor to be switched to a low-speed operation mode according to the received third control instruction;
the second frequency converter controls the double feed rollers of the feed system to operate in a high-speed mode according to the received third control instruction, and similarly, the second frequency converter outputs a fifth control instruction until the collected scrap steel conveying weight belongs to a preset range and the collected current of a driving motor for driving the crusher to be in a preset current range, and the first frequency converter and the second frequency converter both control the corresponding conveyor and switch the double feed rollers to switch to a uniform speed operation mode according to the received fifth control instruction.
In another embodiment, as shown in fig. 5, the method further includes step s403, when the current steel scrap conveying weight is lower than a preset range and the current of a driving motor for driving the crusher to crush is higher than the preset current range, collecting the running speed of the conveyor and the speed of the double feeding rollers, and outputting a fourth control command to control the crusher and the feeder to stop when the running speeds are both low. In this embodiment, the industrial personal computer is electrically connected to the conveying system, the feeding system and the crushing system in a communication manner.
It should be noted that the method of the present application further includes: and calculating the current duration time of the crusher driving motor, and executing the corresponding next operation under the condition that each current is not in the range of the preset ground current and the current duration time exceeds the preset time. Illustrating: when the current scrap steel conveying weight exceeds a preset range and the current of a driving motor for driving the crusher to crush is larger than the preset current range, the duration of sampling current is required, for example, the set time is 60 seconds, and if the duration is more than 60 seconds, the current value of the driving motor is larger than the preset current range, and a first control instruction is output;
the first frequency converter controls the conveyor to switch to a low-speed operation mode according to the received first control instruction;
and the second frequency converter controls the double feeding rollers of the feeding system to operate in a low-speed mode according to the received first control instruction.
The invention also provides a feeding control system of the steel scrap feeding machine, which is applied to an industrial personal computer, wherein the industrial personal computer is connected with a conveying system and a feeding system, the conveying system comprises a conveyor, a first frequency converter for driving the conveyor to move and a belt scale weight sensor, the feeding system comprises double feeding rollers and a second frequency converter for driving the double feeding rollers to move, the belt scale weight sensor is used for detecting the weight value of steel scrap on the conveyor, a first speed sensor is used for detecting the running speed of the conveyor, and a second speed sensor is used for detecting the movement of the double feeding rollers; the current sensor is used for detecting the value of the driving motor of the crusher, and the industrial personal computer is connected with the conveying system and the feeding system and is used for the feeding control method of the scrap steel feeding machine. The system of the above embodiments has been described in detail in relation to the embodiments of the method, and will not be described in detail here.
It should be noted that, in the drawings or the description, implementations which are not drawn or described are implementations known to those of ordinary skill in the art, and are not described in detail. Furthermore, the above definitions of the elements and methods are not limited to the specific structures, shapes or modes mentioned in the embodiments.
It should also be noted that examples of parameters that include particular values may be provided herein, but that these parameters need not be exactly equal to the corresponding values, but may approximate the corresponding values within acceptable error margins or design constraints. Furthermore, unless specifically described or steps must occur in sequence, the order of the above steps is not limited to the list above and may be changed or rearranged according to the desired design. In addition, the above embodiments may be mixed with each other or other embodiments based on design and reliability, i.e. the technical features of the different embodiments may be freely combined to form more embodiments.
While the invention has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention as defined by the appended claims.
Claims (3)
1. The feeding control method of the steel scrap feeding machine is characterized in that the feeding control method is applied to an industrial personal computer, the industrial personal computer is connected with a conveying system and a feeding system, the conveying system comprises a conveyor and a first frequency converter for driving the conveyor to move, the feeding system comprises a double feeding roller and a second frequency converter for driving the double feeding roller to move, and the method comprises the following steps:
the input set feeding parameters comprise: the rated rotating speed of a transmitter for driving the conveyor to operate, the rated feeding speed for driving the double feeding rollers, the preset weight range for conveying the scrap steel and the preset current range of the crusher;
collecting the current scrap steel conveying weight in a preset range of the conveyor;
collecting current of a driving motor for driving the crusher to crush;
determining the rotating speed of an engine for driving the conveyor to operate and the feeding speed for driving the double feeding rollers according to the current scrap steel conveying weight and the current of a driving motor; the method specifically comprises the following steps:
judging whether the current steel scrap conveying quality is beyond a preset weight range;
judging whether the current of a driving motor for driving the crusher to crush is larger than a preset current range;
outputting a first control instruction under the condition that the current scrap steel conveying weight exceeds a preset range and the current of a driving motor for driving the crusher to crush is larger than the preset current range;
the first frequency converter controls the conveyor to switch to a low-speed operation mode according to the received first control instruction;
the second frequency converter controls the double feed rollers of the feed system to operate in a low-speed mode according to the received first control instruction;
outputting a fifth control instruction under the condition that the collected scrap steel conveying weight belongs to a preset range and the collected current of a driving motor for driving the crusher to be crushed simultaneously belongs to a preset current range, and controlling the corresponding conveyor and the switching double feed rollers to be switched to a uniform speed operation mode by the first frequency converter and the second frequency converter according to the received fifth control instruction;
under the condition that the current scrap steel conveying weight is lower than a preset range and the current of a driving motor for driving the crusher to crush is higher than the preset current range, collecting the running speed of the conveyor and the speed of the double feeding rollers, and outputting a fourth control instruction when the running speeds are low, so as to control the crusher and the feeding machine to stop;
judging whether the current of the collected driving motor for driving the crusher to crush is greater than a preset current range or not, and further comprising:
outputting a second control instruction under the condition that the current scrap steel conveying weight is lower than a preset range and the current of a driving motor for driving the crusher to crush is lower than the preset current range;
the first frequency converter controls the conveyor to switch to a high-speed operation mode according to the received second control instruction;
the second frequency converter controls the double feed rollers of the feed system to operate in a high-speed mode according to the received second control instruction;
judging whether the current of the collected driving motor for driving the crusher to crush is greater than a preset current range or not, and further comprising:
outputting a third control instruction under the condition that the current scrap steel conveying weight is higher than a preset range and the current of a driving motor for driving the crusher to crush is lower than the preset current range;
the first frequency converter controls the conveyor to be switched to a low-speed operation mode according to the received third control instruction;
and the second frequency converter controls the double feeding rollers of the feeding system to operate in a high-speed mode according to the received third control instruction.
2. The feeding control method of a scrap steel feeding machine according to claim 1, wherein: the method further comprises the steps of: and calculating the current duration time of the crusher driving motor, and executing the corresponding next operation under the condition that each current is not in the range of the preset ground current and the current duration time exceeds the preset time.
3. The feeding control system of the steel scrap feeding machine is characterized in that the system is applied to an industrial personal computer, the industrial personal computer is connected with a conveying system and a feeding system, the conveying system comprises a conveyor, a first frequency converter driving the conveyor to move and a belt scale weight sensor, the feeding system comprises a double feeding roller and a second frequency converter driving the double feeding roller to move,
the belt conveyor comprises a belt scale weight sensor, a first speed sensor, a second speed sensor and a double-feeding roller, wherein the belt scale weight sensor is used for detecting the weight value of scrap steel on a conveyor; the current sensor is used for detecting the value of a driving motor of the crusher, and the industrial personal computer is connected with the conveying system and the feeding system and is used for executing the feeding control method of the scrap steel feeding machine according to any one of claims 1-2.
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| CN202211014256.9A CN115382653B (en) | 2022-08-23 | 2022-08-23 | Feeding control method of scrap steel feeding machine |
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| CN202211014256.9A CN115382653B (en) | 2022-08-23 | 2022-08-23 | Feeding control method of scrap steel feeding machine |
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| CN116273364B (en) * | 2023-02-27 | 2023-11-03 | 长沙中金智能装备有限公司 | Shredding and crushing integrated equipment and driving method |
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