CN113499848B - Sand material water content control method, sand material preparation system and electronic equipment - Google Patents
Sand material water content control method, sand material preparation system and electronic equipment Download PDFInfo
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- CN113499848B CN113499848B CN202110713168.7A CN202110713168A CN113499848B CN 113499848 B CN113499848 B CN 113499848B CN 202110713168 A CN202110713168 A CN 202110713168A CN 113499848 B CN113499848 B CN 113499848B
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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
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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
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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
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
Abstract
The invention provides a sand water content control method, a sand preparation system and electronic equipment, and relates to the technical field of sand production. The method comprises the following steps: starting the crusher and the humidifier, and controlling the water pump to operate according to a first frequency in the starting stage of the crusher; controlling the water pump to operate at a second frequency in the stable operation stage of the crusher; the water pump is used for conveying water to the humidifier, the crusher is used for providing sand materials to the humidifier, the first frequency is smaller than the second frequency, the stable operation stage is a stage from reaching preset power to receiving a shutdown instruction of the crusher, and the starting stage is a stage from receiving a startup instruction to reaching preset power of the crusher. The invention ensures that the water content of the sand material in the humidifier at the initial stage of starting the crusher is not too high, ensures the stability of the water content in the production process of the sand material, reduces the fluctuation of the water content, is beneficial to the regulation and control of the water consumption for the subsequent concrete mixing and is beneficial to improving the performance of the concrete.
Description
Technical Field
The invention relates to the technical field of sand material production, in particular to a sand material water content control method, a sand material preparation system and electronic equipment.
Background
The sand is one of the important raw materials of cement concrete, plays the roles of a framework and filling in a mixture and has important influence on the performance of fresh concrete. With the acceleration of the construction rhythm of the modern society and the enhancement of environmental protection consciousness, the application of machine-made sand instead of natural sand becomes the inevitable choice for sustainable development.
In the production and processing process of machine-made sand, a humidifier is needed to humidify and stir the sand material, and the sand material is made to have a certain water content by adding water and mixing, so that segregation and dust emission in the transportation process are reduced, and the control of the water consumption for subsequent concrete mixing is facilitated.
Among the prior art, take more and continue to the moisture content of the water mode control sand material in the humidification machine, because system sand complete sets is starting and shutting down the in-process, sand material output changes and to have the delay for feed speed, sand material output is lower, consequently it can make sand material start and stop the in-process moisture content on the high side at the equipment to continue to add invariable water yield in the humidification machine, and the moisture content of sand material can produce great fluctuation in the production process, influences the ratio of concrete, reduces the performance of concrete.
In the prior art, a mode of intermittently adding water into a humidifier is adopted, the defect that the water content is higher in the starting and stopping processes of the equipment is slightly overcome, but the yield of the sand material in each time interval is not completely the same, the intermittent water addition still causes the fluctuation of the water content of the sand material, and the improvement of the quality of the sand material is not facilitated.
Disclosure of Invention
The invention provides a sand material water content control method, a sand material preparation system and electronic equipment, and aims to at least solve the technical problems that in the prior art, the water content of sand materials is high in the starting and stopping process of the equipment, and the water content of the sand materials is unstable in the production process.
In a first aspect, the invention provides a sand material water content control method, which comprises the following steps: starting the crusher and the humidifier, and controlling the water pump to operate according to a first frequency in the starting stage of the crusher;
controlling the water pump to operate at a second frequency during a stable operation phase of the crusher;
the water pump is used for conveying water to the humidifier, the crusher is used for providing sand materials to the humidifier, the first frequency is smaller than the second frequency, the stable operation stage is a stage from reaching a preset power to receiving a shutdown instruction of the crusher, and the starting stage is a stage from receiving a startup instruction to reaching the preset power of the crusher.
According to the sand material water content control method provided by the embodiment of the invention, in the stable operation stage of the crusher, the water pump is controlled to operate at the second frequency, and the method comprises the following steps:
controlling the water pump to operate at a second frequency based on the crusher's motor current.
According to the sand material water content control method provided by the embodiment of the invention, in the stable operation stage of the crusher, the water pump is controlled to operate at the second frequency, and the method comprises the following steps:
obtaining a motor current of the crusher and a charge of the crusher, determining the second frequency based on the motor current and the charge.
According to the sand water content control method provided by the embodiment of the invention, the determining the second frequency based on the motor current and the feeding amount specifically comprises the following steps:
and comparing the motor current and the feeding amount with a comparison table, and determining the corresponding second frequency, wherein the comparison table comprises a current interval, a water content, a feeding amount and a water pump frequency, and the current interval, the water content, the feeding amount and the water pump frequency are arranged in groups.
According to the sand material water content control method provided by the embodiment of the invention, the method further comprises the following steps:
and in the shutdown stage of the crusher, controlling the water pump to operate according to a third frequency, wherein the third frequency is smaller than the second frequency, and the shutdown stage is a stage from receiving a shutdown instruction to shutdown of the crusher.
According to the sand material water content control method provided by the embodiment of the invention, the third frequency is equal to the first frequency.
In a second aspect, the present invention also provides a sand preparation system, comprising: the device comprises a crusher, a humidifier and a controller, wherein the crusher is used for providing sand materials for the humidifier, and the water pump is used for conveying water for the humidifier;
the controller is used for controlling the water pump to operate according to a first frequency in the starting stage of the crusher; the water pump is controlled to operate at a second frequency in a stable operation stage of the crusher;
the first frequency is smaller than the second frequency, the stable operation stage is a stage from reaching a preset power to receiving a shutdown instruction of the crusher, and the starting stage is a stage from receiving a startup instruction to reaching the preset power of the crusher.
According to the sand preparation system provided by the embodiment of the invention, the controller is used for controlling the water pump to operate at the second frequency based on the motor current of the crusher.
According to the sand preparation system provided by the embodiment of the invention, the controller is further used for controlling the water pump to operate according to a third frequency in a shutdown stage of the crusher, wherein the third frequency is smaller than the second frequency, and the shutdown stage is a stage from receiving a shutdown instruction to shutdown of the crusher.
In a third aspect, the present invention provides an electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the steps of the sand water content control method according to the first aspect.
According to the sand material water content control method, the sand material preparation system and the electronic equipment, the water pump is controlled to operate according to the first frequency in the starting stage of the crusher, the first frequency is lower than the second frequency, and a small amount of water is provided for the humidifier when the yield of the crusher is low, so that the sand material water content in the humidifier at the starting initial stage of the crusher is not too high; at the steady operation stage of breaker, make the water pump according to the operation of second frequency, guaranteed the stability of water content in the sand material production process, it is undulant to reduce the water content, is favorable to follow-up concrete mix water consumption's regulation and control, is favorable to improving the performance of concrete.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow chart of a sand water content control method provided by an embodiment of the invention;
FIG. 2 is a schematic flow chart of a method for controlling moisture content of sand material according to one embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the method for controlling the moisture content of the sand material provided by the embodiment of the invention includes:
starting the crusher and the humidifier, and controlling the water pump to operate according to a first frequency in the starting stage of the crusher;
controlling the water pump to operate at a second frequency in the stable operation stage of the crusher;
the water pump is used for conveying water to the humidifier, the crusher is used for providing sand materials to the humidifier, the first frequency is smaller than the second frequency, the stable operation stage is a stage from reaching preset power to receiving a shutdown instruction of the crusher, and the starting stage is a stage from receiving a startup instruction to reaching preset power of the crusher. It should be noted that the preset power is a preset power value, and when the operating power of the crusher reaches the preset power, the crusher is in a normal operating state.
Specifically, after a starting instruction of the sand making complete equipment is received, the crusher, the humidifier and the water pump are controlled to be started. At the start-up stage of breaker, the breaker has not reached steady state yet, and the inverter motor operating power of breaker is less, and the breaker also is less to the output that the humidifier provided sand material, and if the water pump carries water to the humidifier according to the water yield of carrying when steady state, can cause the sand material moisture content in the humidifier to be on the high side. Therefore, in the method for controlling the water content of the sand material provided by the embodiment of the invention, the water pump is controlled to operate at a low frequency according to the first frequency to deliver a proper amount of water in the starting stage of the crusher. The first frequency is a preset frequency artificially set in advance, and is smaller than the water pump frequency in a stable state, for example, the water pump frequency in the stable state is 15-20 Hz, and the first frequency is only 3 Hz.
After the water pump operates at the first frequency for the first preset time, the crusher reaches a stable operation state, and at the moment, the water pump is controlled to operate at the second frequency. The first preset time is a preset time which is set manually, for example, the first preset time can be set to 1min, and after the first preset time passes after the crusher is started, the crusher is in a stable operation state.
It is also possible to not set the first preset duration but to connect the crusher in communication with the water pump. In one embodiment, when the current of a motor of the crusher does not reach a current interval in a steady state, the water pump is controlled to operate at a first frequency and a low frequency; and when the motor current of the crusher reaches a stable interval, controlling the water pump to operate at a second frequency based on the motor current of the crusher. For example, the motor current interval of the crusher in a stable state is [360,400] (unit: A), the motor current of the crusher in a starting stage is 150A, and the motor current does not reach the stable interval, so that the water pump is controlled to operate at a low frequency according to a first frequency; after the crusher runs for a period of time, the current of the motor reaches 380A, and in the motor current interval when the crusher is in a stable state, the water pump is controlled to run at a second frequency.
According to the sand material water content control method provided by the embodiment of the invention, the water pump is controlled to operate according to the first frequency in the starting stage of the crusher, and the first frequency is smaller than the second frequency, so that a small amount of water is provided for the humidifier when the yield of the crusher is low, and the sand material water content in the humidifier at the initial starting stage of the crusher cannot be too high; at the steady operation stage of breaker, make the water pump according to the operation of second frequency, guaranteed the stability of water content in the sand material production process, it is undulant to reduce the water content, is favorable to follow-up concrete mix water consumption's regulation and control, is favorable to improving the performance of concrete.
In the stable operation stage of the crusher, the motor current can reflect the operation power of the crusher and the sand yield fed to the humidifier, so that in one embodiment, the water pump is controlled to operate at the second frequency based on the motor current of the crusher, the change of the proportion of the sand quantity to the water quantity in the humidifier is smaller, and the stability of the water content in the sand production process is ensured.
In another embodiment, as shown in fig. 2, the motor current of the crusher and the amount of material fed to the crusher are obtained, and the second frequency is determined based on the motor current and the amount of material fed.
After the crusher enters a stable operation stage, the amount of sand fed into the humidifier can be predicted more accurately according to the current of the motor of the crusher and the feeding amount of the sand fed into the crusher, so that the accuracy of the water content of the sand in the humidifier is higher.
The method comprises the steps of obtaining the current of a motor of the crusher and the feeding amount of the crusher, wherein the current of the motor of the crusher and the feeding amount of the crusher can be obtained in real time, and the current of the motor of the crusher and the feeding amount of the crusher can be obtained at intervals. The charge may also be replaced by a charge mass flow rate to the crusher, for example a charge mass delivered per hour.
According to any of the above embodiments, the determining the second frequency based on the motor current and the dose is specifically to compare the motor current and the dose with a comparison table and determine the corresponding second frequency. The comparison table comprises a current interval, a water content, a feeding amount and a water pump frequency, and the current interval, the water content, the feeding amount and the water pump frequency are arranged in groups.
The comparison table is a preset data table used for obtaining the second frequency, a linear relation among a current interval, the water content, the material feeding amount and the water pump frequency is established on the basis of actual production experience, and the corresponding water pump frequency can be uniquely determined according to the obtained motor current, the material feeding amount and the preset water content of the sand material, so that the sand material in the humidifier reaches the preset water content.
For example, when the motor current is 380A and the feeding mass flow is 80t/h, the water content of the sand material which is preset is known to be 3%, and the following conditions are inquired by referring to a comparison table: when the current of the motor is in a range of 360,380 (unit: A), the feeding mass flow is 80t/h, and the preset water content of the sand is 3%, the corresponding frequency of the motor is 15Hz, at the moment, the second frequency is determined to be 15Hz, and the water pump operates according to the frequency of 15 Hz.
The sand material water content control method provided by the embodiment of the invention further comprises the following steps: and controlling the water pump to operate according to the third frequency in the shutdown stage of the crusher. The third frequency is a preset frequency which is artificially set, the third frequency is smaller than the water pump frequency in a stable state, and the shutdown stage is a stage from receiving a shutdown instruction to shutdown of the crusher.
In one embodiment, the third frequency is equal to the first frequency, for example, the third frequency and the first frequency are both set to 3 Hz.
Specifically, after receiving a shutdown instruction of the sand making plant, feeding into the crusher is stopped immediately, and since unprocessed residual sand may still exist in the crusher, the humidifier and the water pump are not turned off immediately after receiving the shutdown instruction, but are turned off together after operating for a period of time.
And at the stage from the receiving of the shutdown instruction to the complete shutdown, controlling the water pump to operate at a low frequency according to a third frequency for a second preset time, so that the residual sand in the crusher enters the humidifier and is mixed with a proper amount of water, and preventing the water content of the sand from being higher during the shutdown. The second preset duration is a preset duration, and the second preset duration may be equal to the first preset duration, for example, both the second preset duration and the first preset duration are set to 1 min.
Based on the method for controlling the water content of the sand material, the sand material preparation system provided by the embodiment of the invention comprises a crusher, a humidifier, a water pump and a controller. The crusher is used for providing sand materials for the humidifier, and the water pump is used for conveying water to the humidifier.
The controller is used for controlling the water pump to operate according to a first frequency in the starting stage of the crusher; for controlling the water pump to operate at the second frequency during a steady operation phase of the crusher.
The first frequency is smaller than the second frequency, the stable operation stage is a stage from the moment that the crusher reaches the preset power to the moment that the crusher receives a stop instruction, and the starting stage is a stage from the moment that the crusher receives a start-up instruction to the moment that the crusher reaches the preset power.
Specifically, after the controller receives a starting instruction of the sand making complete equipment, the crusher, the humidifier and the water pump are controlled to be started. At the start-up stage of breaker, the breaker has not reached steady state yet, and the inverter motor operating power of breaker is less, and the breaker also is less to the output that the humidifier provided sand material, and if the water pump carries water to the humidifier according to the water yield of carrying when steady state, can cause the sand material moisture content in the humidifier to be on the high side. Therefore, in the starting stage of the crusher, the controller controls the water pump to operate at a low frequency according to the first frequency, and a proper amount of water is delivered.
According to the sand material preparation system provided by the invention, the controller controls the water pump to operate according to the first frequency in the starting stage of the crusher, the first frequency is lower than the second frequency, and a small amount of water is provided for the humidifier when the yield of the crusher is low, so that the water content of sand materials in the humidifier is not too high at the starting initial stage of the crusher; at the steady operation stage of breaker, the controller control water pump moves according to the second frequency, has guaranteed the stability of water content in the sand material production process, and it is undulant to reduce the water content, is favorable to the regulation and control of follow-up concrete mix water consumption, is favorable to improving the performance of concrete.
In the stable operation stage of the crusher, the motor current can reflect the operation power of the crusher and the sand yield fed to the humidifier, so that in one embodiment, the controller controls the water pump to operate at the second frequency based on the motor current of the crusher, so that the change of the proportion of the sand quantity to the water quantity in the humidifier is small, and the stability of the water content in the sand production process is ensured.
In another embodiment, the controller determines the second frequency based on the current of the crusher motor and the amount of material delivered to the crusher to more accurately predict the amount of sand delivered to the humidifier, resulting in a more accurate moisture content of the sand in the humidifier. For example, the controller compares the motor current and the charge to a comparison table to determine a corresponding second frequency. The comparison table comprises a current interval, a water content, a feeding amount and a water pump frequency, the current interval, the water content, the feeding amount and the water pump frequency are arranged in groups, and the controller can uniquely determine the corresponding water pump frequency according to the obtained motor current, the feeding amount and the preset water content of the sand, so that the sand in the humidifying machine reaches the preset water content.
The controller is also configured to control the water pump to operate at a third frequency during a shutdown phase of the crusher. The third frequency is a preset frequency which is artificially set, the third frequency is smaller than the water pump frequency in a stable state, and the shutdown stage is a stage from receiving a shutdown instruction to shutdown of the crusher. The third frequency may be equal to the first frequency, for example, the third frequency and the first frequency are both set to be 3 Hz.
An embodiment of the present invention further provides an electronic device, fig. 3 illustrates an entity structural schematic diagram of the electronic device, and as shown in fig. 3, the electronic device may include: a processor (processor)310, a communication interface (communication interface)320, a memory (memory)330 and a communication bus 340, wherein the processor 310, the communication interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may invoke logic instructions in the memory 330 to perform a sand moisture control method comprising: starting the crusher and the humidifier, and controlling the water pump to operate according to a first frequency in the starting stage of the crusher; controlling the water pump to operate at a second frequency in the stable operation stage of the crusher; the water pump is used for conveying water to the humidifier, the crusher is used for providing sand materials to the humidifier, the first frequency is smaller than the second frequency, the stable operation stage is a stage from reaching preset power to receiving a shutdown instruction of the crusher, and the starting stage is a stage from receiving a startup instruction to reaching preset power of the crusher.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer being capable of executing the sand water content control method provided by the above methods, the method including: starting the crusher and the humidifier, and controlling the water pump to operate according to a first frequency in the starting stage of the crusher; controlling the water pump to operate at a second frequency in the stable operation stage of the crusher; the water pump is used for conveying water to the humidifier, the crusher is used for providing sand materials to the humidifier, the first frequency is smaller than the second frequency, the stable operation stage is a stage from the moment that the crusher reaches the preset power to the moment that the crusher receives a shutdown instruction, and the starting stage is a stage from the moment that the crusher receives a startup instruction to the moment that the crusher reaches the preset power.
In yet another aspect, the present invention further provides a non-transitory computer readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the sand water content control method provided above, the method including: starting the crusher and the humidifier, and controlling the water pump to operate according to a first frequency in the starting stage of the crusher; controlling the water pump to operate at a second frequency in the stable operation stage of the crusher; the water pump is used for conveying water to the humidifier, the crusher is used for providing sand materials to the humidifier, the first frequency is smaller than the second frequency, the stable operation stage is a stage from reaching preset power to receiving a shutdown instruction of the crusher, and the starting stage is a stage from receiving a startup instruction to reaching preset power of the crusher.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A sand material water content control method is characterized by comprising the following steps:
starting the crusher and the humidifier, and controlling the water pump to operate according to a first frequency in the starting stage of the crusher, wherein the first frequency is a preset frequency;
controlling the water pump to operate at a second frequency during a stable operation phase of the crusher;
controlling the water pump to operate according to a third frequency in the shutdown stage of the crusher;
the controlling the water pump to operate at a second frequency during a steady operation phase of the crusher, comprising:
obtaining a motor current of the crusher and a feeding amount of the crusher, and determining the second frequency based on the motor current and the feeding amount;
the water pump is used for conveying water to the humidifier, the crusher is used for providing sand materials to the humidifier, the first frequency is smaller than the second frequency, the stable operation stage is a stage from reaching a preset power to receiving a shutdown instruction of the crusher, and the starting stage is a stage from receiving a starting instruction to reaching the preset power of the crusher; the third frequency is smaller than the second frequency, and the shutdown stage is a stage from receiving a shutdown command to shutdown of the crusher.
2. The sand material water content control method according to claim 1, wherein the step of controlling the water pump to operate at a second frequency in the stable operation stage of the crusher comprises the following steps:
controlling the water pump to operate at a second frequency based on the crusher's motor current.
3. The sand material water content control method according to claim 1, wherein the determining the second frequency based on the motor current and the feeding amount is specifically:
and comparing the motor current and the feeding amount with a comparison table, and determining the corresponding second frequency, wherein the comparison table comprises a current interval, a water content, a feeding amount and a water pump frequency, and the current interval, the water content, the feeding amount and the water pump frequency are arranged in groups.
4. The method of controlling the moisture content of a sand material according to claim 3, wherein the third frequency is equal to the first frequency.
5. A sand preparation system based on the sand water content control method of any one of claims 1 to 4, characterized by comprising: the sand-water separator comprises a crusher, a humidifier, a water pump and a controller, wherein the crusher is used for providing sand materials for the humidifier, and the water pump is used for conveying water to the humidifier;
the controller is used for controlling the water pump to operate according to a first frequency in the starting stage of the crusher, and the first frequency is a preset frequency; the water pump is controlled to operate at a second frequency in a stable operation stage of the crusher;
the first frequency is smaller than the second frequency, the stable operation stage is a stage from reaching a preset power to receiving a shutdown instruction of the crusher, and the starting stage is a stage from receiving a startup instruction to reaching the preset power of the crusher.
6. The sand preparation system of claim 5 wherein the controller is configured to control the water pump to operate at a second frequency based on a motor current of the crusher.
7. The sand preparation system of claim 5 wherein the controller is further configured to control the water pump to operate at a third frequency during a shutdown phase of the crusher, the third frequency being less than the second frequency, wherein the shutdown phase is a phase from when the crusher receives a shutdown command to when the crusher is shutdown.
8. An electronic device comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor implements the steps of the sand water content control method according to any one of claims 1 to 4 when executing the program.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202061575U (en) * | 2011-08-26 | 2011-12-07 | 上海金路创展工程机械有限公司 | Moistening machine used for sand-making production line |
| CN203620750U (en) * | 2013-12-12 | 2014-06-04 | 中联重科股份有限公司 | Dry-type sand making system |
| CN106272977B (en) * | 2015-05-22 | 2019-04-12 | 中联重科股份有限公司 | Sand material humidification system and method |
| CN208894096U (en) * | 2018-09-03 | 2019-05-24 | 成都雷森机械设备有限公司 | A kind of humidifier for sand material humidification |
| CN111948170A (en) * | 2020-08-21 | 2020-11-17 | 浙江交工宏途交通建设有限公司 | On-line infrared moisture detection system |
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