CN107265895A - A kind of Machine-made Sand system for controlling moister content and sand equipment processed - Google Patents
A kind of Machine-made Sand system for controlling moister content and sand equipment processed Download PDFInfo
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- CN107265895A CN107265895A CN201610210155.7A CN201610210155A CN107265895A CN 107265895 A CN107265895 A CN 107265895A CN 201610210155 A CN201610210155 A CN 201610210155A CN 107265895 A CN107265895 A CN 107265895A
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- made sand
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
This application discloses a kind of Machine-made Sand system for controlling moister content, finished sand weighing device, water content monitoring device, regulation device for water content and control device, the finished sand weighing device, the weight for measuring finished product Machine-made Sand；The water content monitoring device, the control device is sent to for the water content information of testing mechanism sand, and by the water content information；The control device, for receiving the water content information, and calculates the amount of water for needing to add into finished product Machine-made Sand according to the weight of the water content information and the finished product Machine-made Sand, and send control signal to the regulation device for water content；The regulation device for water content, for receiving the control signal, and adds into finished product Machine-made Sand the water of the amount of water.The Machine-made Sand system for controlling moister content that the application is provided, the precise control to Machine-made Sand water content, the water content by the Machine-made Sand of water content control is stable.
Description
Technical field
The application is related to construction material preparing technical field, more particularly to a kind of Machine-made Sand water content control
System, the application further relates to a kind of sand equipment processed, and the equipment employs Machine-made Sand system for controlling moister content.
Background technology
At present, as the increasingly depleted of natural sand resource, digging are gradually forbidden, Machine-made Sand is more and more
It is applied to building, engineering field substitution natural sand.Judgment mechanism sand quality quality an important indicator be
Its water content number, when preparing concrete, in the timing of every side's concrete amount of water one, Machine-made Sand is aqueous
The fluctuation of amount can reduce intensity and the life-span of concrete, and therefore, Machine-made Sand needs to contain it before the use
Water is controlled.
In the prior art, the control to Machine-made Sand water content sets water inlet system, and root is controlled using motor-driven valve
The control to the water content of Machine-made Sand is realized according to inflow set in advance.However, this kind of Machine-made Sand contains
Control of the water yield control system to Machine-made Sand water content is not accurate enough, by the Machine-made Sand of water content control
Water content is unstable.
Therefore, on the basis of existing technology, a kind of new Machine-made Sand system for controlling moister content, Neng Goushi
Now the water content to finished product Machine-made Sand is accurately controlled, and is those skilled in the art's urgent problem to be solved.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of Machine-made Sand system for controlling moister content, to mechanism
The precise control of sand water content, the water content by the Machine-made Sand of water content control is stable.
The technical scheme that the present invention is provided is as follows：
A kind of Machine-made Sand system for controlling moister content, including finished sand weighing device, water content monitoring device,
Regulation device for water content and control device,
The finished sand weighing device, the weight for measuring finished sand machine；
The water content monitoring device, the water content information for detecting finished product Machine-made Sand, and contain described
Water amount information is sent to the control device；
The control device, for receiving the water content information, and according to the water content information and institute
The weight for stating finished product machine sand calculates the amount of water for needing to add into finished product Machine-made Sand, and sends control letter
Number give the regulation device for water content；
The regulation device for water content, is added for receiving the control signal, and into finished product Machine-made Sand
The water of the amount of water.
Preferably, the water content monitoring device includes, and sampler, the first weighing device, second claim
Refitting is put and drying unit,
The sampler, the sample Machine-made Sand for taking out predetermined amount in finished product Machine-made Sand, and by institute
State sample Machine-made Sand and be delivered to first weighing device；
First weighing device, the weight for measuring the sample Machine-made Sand, and by the sample machine
The weight information of sand processed is sent to the control device, and sample Machine-made Sand is delivered in the drying unit；
The drying unit, for drying the moisture content in the sample Machine-made Sand, and by the sample after drying
Machine-made Sand is delivered in second weighing device；
Second weighing device, the weight for measuring the sample Machine-made Sand after drying, and by after drying
The weight information of sample Machine-made Sand be sent to the control device, and the sample Machine-made Sand after drying is sent
Go out.
Preferably, it is provided between the sampler and first weighing device for being taken described
The sample Machine-made Sand that sampling device is taken is delivered to the first conveying device of the first weighing device.
Preferably, the Machine-made Sand system for controlling moister content is additionally provided with for the second weighing device to be conveyed
Drying after Machine-made Sand be delivered to the second conveying device in finished product Machine-made Sand.
Preferably, the regulation device for water content includes, water source and hydrodynamic apparatus, the hydrodynamic force dress
Put for the water in the water source to be delivered in finished product Machine-made Sand, be provided with the hydrodynamic apparatus
Magnetic valve, the magnetic valve is connected with the control device, for controlling the water in the water source to enter institute
State in finished product Machine-made Sand.
Preferably, be additionally provided with electrical ball valve on the hydrodynamic apparatus, the electrical ball valve with it is described
Control device is connected, the amount for entering the finished product Machine-made Sand reclaimed water.
Preferably, hand-operated valve is additionally provided with the hydrodynamic apparatus, the hand-operated valve is used to control institute
The water stated in water source enters in the finished product Machine-made Sand.
Preferably, draining valve is additionally provided with the hydrodynamic apparatus, the draining valve is used for when described
When regulation device for water content is stopped, the ponding in the regulation device for water content is discharged..
Preferably, the Machine-made Sand system for controlling moister content also includes the alarm being connected with the control device
Device, the warning device is used for the water content control in Machine-made Sand system for controlling moister content to finished product Machine-made Sand
System failure alarm.
A kind of sand equipment processed, for the preparation of Machine-made Sand, the sand equipment processed employs above-mentioned any one
Described Machine-made Sand system for controlling moister content.
The Machine-made Sand system for controlling moister content that the present invention is provided, including water content monitoring device, water content are adjusted
Regulating device and control device, water content monitoring device are capable of the water content information of testing mechanism sand, control
The water content information for the Machine-made Sand that device is detected according to water content monitoring device calculates the aqueous of Machine-made Sand
Amount, and the content for needing to add Machine-made Sand reclaimed water is calculated as requested, by controlling water content regulation dress
Put, the water for the amount of water that need to be added into Machine-made Sand that control device is calculated is added into Machine-made Sand, from
And complete the regulation of Machine-made Sand water content.In whole process, due to first have detected add water before Machine-made Sand contain
Water, therefore, compared with prior art, the precise control to Machine-made Sand water content, by water content
The water content of the Machine-made Sand of control is stable.
Brief description of the drawings
, below will be to reality in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
The accompanying drawing used required for applying in example or description of the prior art is briefly described, it should be apparent that, below
Accompanying drawing in description is only some embodiments described in the application, for those of ordinary skill in the art
For, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of Machine-made Sand system for controlling moister content provided in an embodiment of the present invention；
Fig. 2 is the another embodiment of Machine-made Sand system for controlling moister content provided in an embodiment of the present invention
Schematic diagram；
Fig. 3 is the schematic diagram of water content monitoring device in the embodiment of the present invention；
Fig. 4 is the schematic diagram of regulation device for water content in the embodiment of the present invention.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, below in conjunction with
Accompanying drawing in the embodiment of the present application, is clearly and completely retouched to the technical scheme in the embodiment of the present application
State, it is clear that described embodiment is only some embodiments of the present application, rather than whole implementation
Example.Based on the embodiment in the application, those of ordinary skill in the art are not before creative work is made
The every other embodiment obtained is put, should all belong to the scope of the application protection.
According to GB/T 14684-2011《Construction sand》In regulation, the moisture content of sand is calculated as follows：
In formula,
Z --- moisture content, %；
G2--- the sample mass before drying, unit is gram (g)；
G1--- the sample mass after drying, unit is gram (g).
Machine-made Sand (manufactured sand), refers to through except soil processing, by Mechanical Crushing, being sieved into
, particle diameter is less than 4.75mm rock, mill tailings or industrial residue particle, but does not include soft, wind
The particle of change, is commonly called as artificial sand.
Please as shown in Figure 1 to Figure 3, the embodiment of the present invention provides a kind of Machine-made Sand system for controlling moister content,
Including finished sand weighing device 100, water content monitoring device 200, regulation device for water content 400 and control
Device 300 processed, wherein, finished sand weighing device 100, the weight for measuring finished product Machine-made Sand 1；Contain
Water quantity monitoring device 200, the water content information for detecting finished product Machine-made Sand, and water content information is sent
To control device 300；Control device 300, for receiving water content information, and according to water content information with
The weight of finished product Machine-made Sand calculates the amount of water for needing to add into finished product Machine-made Sand, and sends control letter
Number give regulation device for water content 400；Regulation device for water content 400, for receiving control signal, and into
The water of amount of water is added in product Machine-made Sand.
The water content of Machine-made Sand number be weigh its quality quality an important indicator.Preparing coagulation
When native, in the timing of amount of water one of every side's concrete, the fluctuation of Machine-made Sand water content can reduce concrete
Intensity and life-span, therefore, Machine-made Sand need to be controlled its water content before the use.
In the prior art, the control to Machine-made Sand water content sets water inlet system, and root is controlled using motor-driven valve
The control to the water content of Machine-made Sand is realized according to inflow set in advance.However, Machine-made Sand is being carried out
Before water content regulation, itself there is water content, the control to Machine-made Sand water content in the prior art neglects it
Slightly, simply add water, therefore, the control to Machine-made Sand water content is not accurate enough, by water content control
The water content of Machine-made Sand is unstable.
Machine-made Sand system for controlling moister content provided in an embodiment of the present invention, is adjusted to Machine-made Sand water content
During the entire process of section, due to first have detected add water before finished product Machine-made Sand water content, then again pass through meter
The amount for drawing and needing to add water is calculated, therefore, compared with prior art, the control to Machine-made Sand water content
Accurately, the water content by the Machine-made Sand of water content control is stable.
Water content monitoring device 200 in Machine-made Sand system for controlling moister content provided in an embodiment of the present invention is wrapped
Include, sampler 201, the first weighing device 203, the second weighing device 205 and drying unit 204,
Wherein, sampler 201, the sample Machine-made Sand for taking out predetermined amount in finished product Machine-made Sand, and by sample
Product Machine-made Sand is delivered to the first weighing device 203；First weighing device 203, for measuring sample Machine-made Sand
Weight, and the weight information of sample Machine-made Sand is sent to control device 300, and sample Machine-made Sand is sent
Into drying unit 204；Drying unit 204, for drying the moisture in sample Machine-made Sand, and will drying
Sample Machine-made Sand afterwards is delivered in the second weighing device 205；Second weighing device 205, for measuring drying
The weight of sample Machine-made Sand afterwards, and the weight information of the sample Machine-made Sand after drying is sent to control dress
300 are put, and the sample Machine-made Sand after drying is sent out.
Wherein, sampler 201 is preferred to use hydraulic pressure sampler, and drying unit 204 is preferred to use hydraulic pressure
Power dryer, the first weighing device 203 and the second weighing device 205 use electronic weighing device.
Hopper is provided with dryer device, the first weighing device 203, the second weighing device 205,
Hopper is used to be put in sample Machine-made Sand, and the floss hole of sample Machine-made Sand is provided with below hopper, and in row
Put mouth and be provided with valve for being opened and closed floss hole.First weighing device 203, drying unit 204 and second claim
Refitting is put 205 and is vertically arranged successively, sample when sampler 201 takes out default from finished product Machine-made Sand
After Machine-made Sand, sample Machine-made Sand is sent in the first weighing device 203 and weighed, after weighing, and first weighs
Valve below the hopper of device 203 is opened, and the sample mechanism sand flow in the first weighing device 203 enters drying dress
It is oven-dried in putting 204, after sample Machine-made Sand is dried, the valve below the hopper of drying unit 204 is opened,
Sample mechanism sand flow in drying unit 204 enters is weighed in the second weighing device 205, after drying
Sample Machine-made Sand weigh after, the valve below the hopper of the second weighing device 205 is opened, and second weighs
The sample mechanism sand flow being oven-dried in device 205 goes out the second weighing device 205.The setting of the structure, it is whole
Individual process is carried out automatically under the control of control device 300 so that the measure of Machine-made Sand water content is more square
Just.
Wherein, hydraulic pressure sampler main body be one can by hydraulic control open and close Dump gate, hydraulic pressure sampler
Every a preset time start, open Dump gate, take a predetermined amount add water before finished product Machine-made Sand, complete
Automatic sampling.
Quality signal measured by first weighing device 203 and the second weighing device 205 is transported to control
Device 300, calculates the water content of samples taken Machine-made Sand.
Water content monitoring device 200 continuously takes the step of three samples are weighed, dried, weighed, meter
The average value for calculating the sample Machine-made Sand water content of continuous three sub-sampling is aqueous as current sample Machine-made Sand
Amount, completes once the circulation of current finished sand water content detection, water content monitoring device break-off.
It is spaced after a preset time, water content monitoring device startup work, carries out finished product mechanism next time
The detection of sand water content.
In order that the measure for obtaining the water content of finished product Machine-made Sand is more smooth, in the embodiment of the present invention, taking
The sample for sampler 201 to be taken is provided between the weighing device 203 of sampling device 201 and first
Machine-made Sand is delivered to the first conveying device 202 of the first weighing device 203；It is additionally provided with for second to be claimed
Reset the second conveying device 206 that the Machine-made Sand put after the drying of 205 conveyings is delivered in finished product Machine-made Sand.
Wherein, the first conveying device 202 and the second conveying device 206 are preferred to use belt conveyor.
Regulation device for water content 400 in the embodiment of the present invention includes, water source 406 and hydrodynamic apparatus 401,
Wherein, hydrodynamic apparatus 401 is used to the water in water source 406 being delivered in finished product Machine-made Sand, in hydrodynamic(al)
Magnetic valve 402 is provided with power apparatus 401, magnetic valve 402 is connected with control device 300, for controlling
Water in water source enters in finished product Machine-made Sand.
Electrical ball valve 404, electrical ball valve 404 and control device are additionally provided with hydrodynamic apparatus 401
300 connections, for controlling the amount into finished product Machine-made Sand reclaimed water.
When control device 300 calculates the amount that water should be added into finished product Machine-made Sand, control device 300
Hydrodynamic apparatus 401 is controlled, the water in water source is extracted out, while controlling magnetic valve 402, makes whole water route
In connected state, according to actual needs, by controlling electrical ball valve 404 to realize to entering finished product machine
The control of inflow in sand processed.
In the embodiment of the present invention, hand-operated valve 403, hand-operated valve 403 are additionally provided with hydrodynamic apparatus 401
For controlling the water in water source to enter in finished product Machine-made Sand.When magnetic valve 402 is in electrical ball valve 404
During the state that can not be worked, it can be realized by manual hand manipulation's hand-operated valve 403 in finished product Machine-made Sand
Water inlet.
In the embodiment of the present invention, draining valve 405 is additionally provided with hydrodynamic apparatus 401, for when aqueous
When quantity regulating device 400 is stopped, the ponding in regulation device for water content 400 is discharged.Work as environment
When temperature is too low, especially winter, the internal water accumulation of regulation device for water content 400 is easily tied at low ambient temperatures
Ice, causes the pipeline of regulation device for water content 400 to be burst, so as to reduce regulation device for water content 400
Service life.The setting of draining valve 405, can be prevented when regulation device for water content 400 is stopped
When, the ponding under low temperature environment in regulation device for water content 400 is to the pipe in regulation device for water content 400
The destruction that road is caused.
The Machine-made Sand system for controlling moister content that the embodiment of the present invention is provided also includes connecting with control device 300
The warning device 500 connect, warning device 500 is used in Machine-made Sand system for controlling moister content to finished product Machine-made Sand
Water content control failure alarm.
Control device 300 in the embodiment of the present invention is preferred to use PLC.Draining valve 405 is preferred
Using ball valve.Hydrodynamic apparatus 401 is preferred to use water pump.
Machine-made Sand system for controlling moister content provided in an embodiment of the present invention, it is possible to achieve given birth to sand equipment processed
The water content of the Machine-made Sand of output is controlled in real time, and the water content for the Machine-made Sand produced is maintained all the time
Near default moisture content, therefore, moisture content is stable, and controllability is high；
Machine-made Sand after processing possesses the Machine-made Sand of appropriate moisture content when for preparing concrete, Ke Yifang
Just the water consumption of every side's concrete is adjusted, prepared concrete is obtained in intensity and in terms of the life-span
Ensure, therefore, Machine-made Sand is best in quality, Workable；
Machine-made Sand system for controlling moister content avoids transport by adding suitable water into Machine-made Sand, both
When airborne dust, pollution, and rationally make use of water resource, therefore, the feature of environmental protection is high, good economy performance.
The embodiment of the present invention also provides a kind of sand equipment processed, and it is aqueous that the sand equipment processed employs above-mentioned Machine-made Sand
Amount control system.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use
The present invention.A variety of modifications to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the most wide scope consistent with features of novelty with principles disclosed herein.
Claims (10)
1. a kind of Machine-made Sand system for controlling moister content, it is characterised in that including finished sand weighing device, contain
Water quantity monitoring device, regulation device for water content and control device,
The finished sand weighing device, the weight for measuring finished product Machine-made Sand；
The water content monitoring device, the water content information for detecting finished product Machine-made Sand, and contain described
Water amount information is sent to the control device；
The control device, for receiving the water content information, and according to the water content information and institute
The weight for stating finished product Machine-made Sand calculates the amount of water for needing to add into finished product Machine-made Sand, and sends control
Signal gives the regulation device for water content；
The regulation device for water content, is added for receiving the control signal, and into finished product Machine-made Sand
The water of the amount of water.
2. Machine-made Sand system for controlling moister content according to claim 1, it is characterised in that described to contain
Water quantity monitoring device includes, sampler, the first weighing device, the second weighing device and drying unit,
The sampler, the sample Machine-made Sand for taking out predetermined amount in finished product Machine-made Sand, and by institute
State sample Machine-made Sand and be delivered to first weighing device；
First weighing device, the weight for measuring the sample Machine-made Sand, and by the sample machine
The weight information of sand processed is sent to the control device, and sample Machine-made Sand is delivered in the drying unit；
The drying unit, for drying the moisture in the sample Machine-made Sand, and by the sample after drying
Machine-made Sand is delivered in second weighing device；
Second weighing device, the weight for measuring the sample Machine-made Sand after drying, and by after drying
The weight information of sample Machine-made Sand be sent to the control device, and the sample Machine-made Sand after drying is sent
Go out.
3. Machine-made Sand system for controlling moister content according to claim 2, it is characterised in that described
The sample machine for the sampler to be taken is provided between sampler and first weighing device
Sand processed is delivered to the first conveying device of the first weighing device.
4. Machine-made Sand system for controlling moister content according to claim 2, it is characterised in that the machine
Sand system for controlling moister content processed is additionally provided with defeated for the Machine-made Sand after the drying that conveys the second weighing device
The second conveying device delivered in finished product Machine-made Sand.
5. Machine-made Sand system for controlling moister content according to claim 2, it is characterised in that described to contain
Water-quantity regulating device includes, water source and hydrodynamic apparatus, and the hydrodynamic apparatus is used in the water source
Water be delivered in finished product Machine-made Sand, magnetic valve, the magnetic valve are provided with the hydrodynamic apparatus
It is connected with the control device, for controlling the water in the water source to enter in the finished product Machine-made Sand.
6. Machine-made Sand system for controlling moister content according to claim 5, it is characterised in that described
Electrical ball valve is additionally provided with hydrodynamic apparatus, the electrical ball valve is connected with the control device, is used for
Control enters the amount of the finished product Machine-made Sand reclaimed water.
7. Machine-made Sand system for controlling moister content according to claim 5, it is characterised in that described
Hand-operated valve is additionally provided with hydrodynamic apparatus, the hand-operated valve is used to control the water in the water source to enter institute
State in finished product Machine-made Sand.
8. Machine-made Sand system for controlling moister content according to claim 5, it is characterised in that described
Draining valve is additionally provided with hydrodynamic apparatus, for when the regulation device for water content is stopped, inciting somebody to action
Ponding discharge in the regulation device for water content.
9. Machine-made Sand system for controlling moister content according to claim 4, it is characterised in that the machine
Sand system for controlling moister content processed also includes the warning device being connected with the control device, the warning device
For in water content control failure alarm of the Machine-made Sand system for controlling moister content to finished product Machine-made Sand.
10. a kind of sand equipment processed, the preparation for Machine-made Sand, it is characterised in that the sand equipment processed is adopted
With the Machine-made Sand system for controlling moister content as described in claim 1 to 9 any one.
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| CN201610210155.7A CN107265895B (en) | 2016-04-06 | 2016-04-06 | Machine-made sand water content control system and sand making equipment |
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| CN201610210155.7A CN107265895B (en) | 2016-04-06 | 2016-04-06 | Machine-made sand water content control system and sand making equipment |
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Cited By (7)
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| CN107727540A (en) * | 2017-10-27 | 2018-02-23 | 华侨大学 | A kind of Machine-made Sand on-line measuring device and online test method |
| CN109399984A (en) * | 2018-11-13 | 2019-03-01 | 中国铁建重工集团有限公司 | The control method and device of water content of sandstone |
| CN109674078A (en) * | 2018-12-24 | 2019-04-26 | 河南中烟工业有限责任公司 | A kind of alarm of cigarette feeding deviation and feed process |
| CN111605078A (en) * | 2020-05-27 | 2020-09-01 | 何庆 | Equipment capable of adjusting water content of sand for concrete |
| CN113426548A (en) * | 2021-06-28 | 2021-09-24 | 中国水利水电第九工程局有限公司 | Control method for wet screening and dry crushing process of fine crushing workshop in machine-made gravel |
| CN113457837A (en) * | 2021-07-09 | 2021-10-01 | 中国水利水电第九工程局有限公司 | Method for washing coarse aggregate and monitoring pitch diameter on line in machine-made gravel production workshop |
| CN114253304A (en) * | 2022-01-11 | 2022-03-29 | 三一重型装备有限公司 | Control method, device and system for water content of machine-made sand and sand making equipment |
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| CN109399984A (en) * | 2018-11-13 | 2019-03-01 | 中国铁建重工集团有限公司 | The control method and device of water content of sandstone |
| CN109674078A (en) * | 2018-12-24 | 2019-04-26 | 河南中烟工业有限责任公司 | A kind of alarm of cigarette feeding deviation and feed process |
| CN109674078B (en) * | 2018-12-24 | 2021-05-18 | 河南中烟工业有限责任公司 | Cigarette feeding deviation alarming and feeding method |
| CN111605078A (en) * | 2020-05-27 | 2020-09-01 | 何庆 | Equipment capable of adjusting water content of sand for concrete |
| CN111605078B (en) * | 2020-05-27 | 2021-07-09 | 抚州市东乡区锦溪混凝土有限公司 | Equipment capable of adjusting water content of sand for concrete |
| CN113426548A (en) * | 2021-06-28 | 2021-09-24 | 中国水利水电第九工程局有限公司 | Control method for wet screening and dry crushing process of fine crushing workshop in machine-made gravel |
| CN113457837A (en) * | 2021-07-09 | 2021-10-01 | 中国水利水电第九工程局有限公司 | Method for washing coarse aggregate and monitoring pitch diameter on line in machine-made gravel production workshop |
| CN113457837B (en) * | 2021-07-09 | 2022-06-17 | 中国水利水电第九工程局有限公司 | Method for washing coarse aggregate and monitoring pitch diameter on line in machine-made gravel production workshop |
| CN114253304A (en) * | 2022-01-11 | 2022-03-29 | 三一重型装备有限公司 | Control method, device and system for water content of machine-made sand and sand making equipment |
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