CN103072206A - Controllable wetting and stirring device and method used for asphalt concrete mixing station dust - Google Patents

Controllable wetting and stirring device and method used for asphalt concrete mixing station dust Download PDF

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Publication number
CN103072206A
CN103072206A CN2011104608934A CN201110460893A CN103072206A CN 103072206 A CN103072206 A CN 103072206A CN 2011104608934 A CN2011104608934 A CN 2011104608934A CN 201110460893 A CN201110460893 A CN 201110460893A CN 103072206 A CN103072206 A CN 103072206A
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China
Prior art keywords
dust
asphalt concrete
concrete mixing
ash bucket
agitating device
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CN2011104608934A
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Chinese (zh)
Inventor
贾亚利
张泽华
靳玉川
栾永军
李磊
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Hebei Construction Group Corp Ltd
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Hebei Construction Group Corp Ltd
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Priority to CN2011104608934A priority Critical patent/CN103072206A/en
Publication of CN103072206A publication Critical patent/CN103072206A/en
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Abstract

The invention discloses a controllable wetting and stirring device used for asphalt concrete mixing station dust. The device comprises a wetting stirrer, a water inlet switch, a water pump, and an electric control cabinet. The device also comprises a dust hopper used for temporary transit storage of dust materials, and a material hoist used for delivering the dust collected in a bag filter in the asphalt concrete mixing station into the dust hopper. The outlet of the dust hopper is connected with a screw conveyor. The screw conveyor is connected with the wetting stirrer. The invention also provides a controllable wetting and stirring method for the asphalt concrete mixing station dust. With the controllable wetting and stirring device and method used for asphalt concrete mixing station dust, dust material final stirring humidity is controlled, such that dust material subsequent processing can be effectively carried out, environment pollution can be reduced, and processing cost can be reduced.

Description

Controlled humidification agitating device and the method for Asphalt concrete mixing station dust
Technical field
The present invention relates to a kind of mechanical treatment control appliance and method, especially relate to controlled humidification agitating device and the method for a kind of Asphalt concrete mixing station dust.
Background technology
Asphalt concrete mixing stands in can produce in the production process human body and environment is brought the lime stone dust of very big harm, and these dust mostly use sack cleaner to collect at present, then process.Mainly contain following severally for the existing method of the subsequent treatment of dust, but effect is all undesirable.
Method one, the direct discharge method of dust material.A special closed dust storehouse of building is led in the outlet of sack cleaner, and dust is just concentrated without any processing and is discharged in the dust storehouse, when dust in the storehouse be stored into a certain amount of after, install to forklift in the truck of transportation and transport.But because dust easily flies upward, in clearing process, can cause secondary pollution to environment.
Method two is arranged dust and is formed mud in the intake pool.Although the method can prevent that dust from filling the air again, water consumption is large, need to be drawn into mud in the tank car with slurry machine after again transportation, cost is higher, simultaneously because dust becomes mud, floor space is large in the soot, difficult treatment.
Method three is carried out humidification to dust and is stirred.This method is to the compromise of method one with method two, also is present the most widely used scheme, in the exit of sack cleaner wetting stirrer is installed dust is carried out the humidification stirring.Because the inflow of wetting stirrer is changeless, and out Dust Capacity can't be determined from sack cleaner, it is few when time thes be many, even cut in and out, difference is very large, and this just causes the dust humidity that stirs through humidification too small or excessive, can not control the humidity of the stirring of dust, result of use also is difficult to satisfactory, again brings the difficult problem of method 1 and method 2.
Summary of the invention
The controlled humidification agitating device and the method that the purpose of this invention is to provide a kind of Asphalt concrete mixing station dust can effectively be carried out the subsequent treatment of particulate dust, reduce environmental pollution and processing cost.
For achieving the above object, the invention provides the controlled humidification agitating device of a kind of Asphalt concrete mixing station dust, comprise wetting stirrer, water inlet switch, water pump and electrical control cabinet, the present invention also comprises:
Ash bucket is used for the interim transfer storage of particulate dust;
Material elevator is used for the dust that the asphalt blending station sack cleaner is collected is imported in the described ash bucket;
The outlet of described ash bucket is connected with conveying worm, and described conveying worm is connected with described wetting stirrer.
Preferably, described ash bucket top is rectangle part, and the bottom is trapezoidal portions.
Preferably, the exit of described ash bucket is provided with the rotary valve by variable-frequency motor control.
Preferably, be provided with the rotating level-sensing device of high steric-hindrance amino and low level blocking rotary type level-sensing device on the described ash bucket, the rotating level-sensing device of described high steric-hindrance amino is arranged at the rectangle part middle part of described ash bucket, and described low level blocking rotary type level-sensing device is arranged at the trapezoidal portions middle part of described ash bucket.
Preferably, the ash discharge speed of described rotary valve is not less than the grey speed of advancing of described material elevator.
Preferably, be provided with frequency converter in the described electrical control cabinet.
Preferably, be provided with the forced service switch in the described electrical control cabinet.
Preferably, the glass cement sealing of acidity or alkalescence is all used in the junction of each equipment room of the controlled humidification agitating device of described Asphalt concrete mixing station dust.
The present invention also provides the controlled humidification stirring means of a kind of Asphalt concrete mixing station dust, comprising:
The material helicopter imports ash bucket with dust, whether the monitoring dust arrives the rotating level-sensing device of high steric-hindrance amino, if then start rotary valve, conveying worm and water inlet switch, dust is transported to wetting stirrer from described ash bucket, if not, then the material helicopter continues dust is imported ash bucket;
Dust arrives low level blocking rotary type level-sensing device in the ash bucket, stops to carry dust in conveying worm;
The wetting stirrer delay working is emptying to the dust of its inside humidification, and water pump quits work.
Preferably, after described water pump quit work, described electrical control cabinet moved described forced service switch, got rid of remaining dust in each equipment.
Therefore, the present invention is by adopting controlled humidification agitating device and the method for above-mentioned Asphalt concrete mixing station dust, control by the final stirring humidity to particulate dust, can effectively carry out the subsequent treatment of particulate dust, reduce environmental pollution and processing cost.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the controlled humidification agitating device embodiment of Asphalt concrete mixing of the present invention station dust;
Fig. 2 is the structural representation of ash bucket among the controlled humidification agitating device embodiment of Asphalt concrete mixing of the present invention station dust;
Fig. 3 is the structural representation of rotary valve among the controlled humidification agitating device embodiment of Asphalt concrete mixing of the present invention station dust;
Fig. 4 is the control principle drawing of electrical control cabinet among the controlled humidification agitating device embodiment of Asphalt concrete mixing of the present invention station dust;
Fig. 5 is the flow chart of the controlled humidification stirring means of Asphalt concrete mixing of the present invention station dust.
Description of reference numerals
1, material elevator; 2, ash bucket; 3, the rotating level-sensing device of high steric-hindrance amino; 4, rotary valve; 5, conveying worm; 6, wetting stirrer; 7, water inlet switch; 8, water pump; 9, low level blocking rotary type level-sensing device.
Among Fig. 3:
M1, material elevator motor; M2, rotary valve variable-frequency motor; M3 and M4, conveying worm motor; M5, wetting stirrer motor; M6, water pump; M7, vibrator.
SB1, scram button; SB2, start button; SB3, stop button; SB4, forced service button; SB5, vibrator button.
KM1 is the contactor of material elevator motor M1; KM2 is the contactor of rotary valve variable-frequency motor M2; KM3 is the contactor of conveying worm motor M3 and M4; KM4 is the contactor of wetting stirrer motor M5 and water pump M6; KM5 is the contactor of vibrator M7.
FR1 is the electrothermal relay of material elevator motor M1; FR2 is the electrothermal relay of rotary valve variable-frequency motor M2; FR3 is the electrothermal relay of conveying worm motor M3 and M4; FR4 is the electrothermal relay of wetting stirrer motor M5 and water pump M6; FR5 is the electrothermal relay of vibrator M7.
K OnBe the action contact of the rotating level-sensing device 3 of high steric-hindrance amino, K LowerAction contact for low level blocking rotary type level-sensing device 9.
L1, L2, L3 and GND represent respectively three phase mains and ground connection.
KA1, KA2 are for realizing that circuit logic concerns employed auxiliary reclay.
KT1 is for realizing that circuit logic concerns the employed time relay.
QS is air switch.
The specific embodiment
The controlled humidification agitating device embodiment of Asphalt concrete mixing station dust
Fig. 1 is the structural representation of the controlled humidification agitating device embodiment of Asphalt concrete mixing of the present invention station dust, as shown in Figure 1, comprises wetting stirrer 6, water inlet switch 7, water pump 8 and electrical control cabinet, and the present invention also comprises:
Ash bucket 2 is used for the interim transfer storage of particulate dust;
Material elevator 1, the dust that is used for that the asphalt blending station sack cleaner is collected imports in the ash bucket 2;
The outlet of ash bucket 2 is connected with conveying worm 5, and conveying worm 5 is connected with wetting stirrer 6.
Fig. 2 is the structural representation of ash bucket among the controlled humidification agitating device embodiment of Asphalt concrete mixing of the present invention station dust, as shown in Figure 2, ash bucket 2 tops are rectangle part in the present embodiment, the bottom is trapezoidal portions, be provided with the rotating level-sensing device 3 of high steric-hindrance amino and low level blocking rotary type level-sensing device 9 on it, the rotating level-sensing device 3 of high steric-hindrance amino is arranged at the rectangle part middle part of described ash bucket, described low level blocking rotary type level-sensing device is arranged at the trapezoidal portions middle part of described ash bucket, the rotating level-sensing device 3 of high steric-hindrance amino and low level blocking rotary type level-sensing device 9 are in order to monitor the height of ash bucket 2 interior particulate dusts, high alert value H1 among Fig. 2 is the ash bucket 2 sodalime stone flour dirt height upper limit, the i.e. installation sites of the rotating level-sensing device 3 of high steric-hindrance amino.Because partly there is certain time-delay hysteresis quality in mechanical action, after sending actuating signal, the rotating level-sensing device 3 of high steric-hindrance amino possibly can't make an immediate response, therefore the location positioning of this H1 is the middle part of ash bucket 2 rectangle parts among Fig. 2, be the lime stone dust reserved storage space between the mechanical part time delay, prevent that it from overflowing, increase the reliability of scheme.High alert value H2 is ash bucket 2 sodalime stone flour dirt height lower limit, the i.e. installation sites of low level blocking rotary type level-sensing device 9.Because the blocking rotary type level-sensing device will lean on material to hinder the level-sensing device machine shaft to rotate to detect material, need material that level-sensing device resistance blade is applied certain pressure, therefore in order to reach the best serviceability of blocking rotary type level-sensing device, the location positioning of H2 is the middle part of ash bucket 2 trapezoidal portions among Fig. 3, so ash bucket 2 is interior can keep more dust, prevent from causing low level blocking rotary type level-sensing device bottom unsettled, send rub-out signal, cause the situation of mechanical part maloperation to occur.
The present embodiment selects the blocking rotary type level-sensing device as sensor, particulate dust can hinder the certain pressure of blade generation to level-sensing device after reaching level-sensing device place height, hinder the rotation of level-sensing device motor, and then make its motor braking, as the principle of monitoring particulate dust height.Two blocking rotary type level-sensing devices all adopt switching value output in the present embodiment, respectively the K among the corresponding diagram 4 regulator cubicle control circuit figure OnWith K Lower
Ash bucket 2 exits are provided with the rotary valve 4 by variable-frequency motor control, thus the ash discharge amount of control ash bucket 2, and rotary valve 4 is installed in the bottom of ash bucket 2, is responsible for the dust in the ash bucket 2 is transferred to conveying worm 5.For the dust that guarantees to store in the ash bucket can in time be processed, the flow of rotary valve should be greater than the ash discharge amount of deduster.Rotary valve 4 is connected with wetting stirrer 6 by conveying worm 5, and wetting stirrer 6 adds water by water pump 8, leans on water inlet switch 7 to regulate the interior inflow of wetting stirrer 6.Conveying worm 5 transfers to wetting stirrer 6 with the dust of rotary valve 4 outputs.For avoiding stopping up, the dust that conveying worm 5 must in time be discharged rotary valve 4 is in time carried, the too small obstruction of conveying worm 5 conveying capacitys, and excessive then cost improves, so the conveying capacity of conveying worm 5 should be consistent with rotary valve 4.The disposal ability of wetting stirrer 6 should more than or equal to the maximum delivery of conveying worm 5, so just can prevent from stopping up in wetting stirrer 6 outlets.
For proving absolutely above-mentioned relation, the present embodiment supposes that with concrete numeral explanation the lime stone dust at Asphalt concrete mixing station is 20-30T/h through the ash discharge amount of bag-type dust.Ash bucket 2 volumes are taken as 7.65T, calculate according to 30T/h such as the ash discharge amount of deduster, and ash bucket 2 probably can be deposited ash 15 minutes, and the flow of rotary valve should be greater than the ash discharge amount 30T/h of deduster, and effective ash discharge amount is in rotary valve 4 revolutions:
V = π ( R 2 - r 2 ) 2 × ( 2 R ) = 1130.4 cm 3
Wherein, R=10cm wherein, r=8cm.
Predetermined rotary valve motor is got 600r/min, and then per hour rotary valve ash discharge amount is
V×600r/min×60min≈40.7m 3
Density in conjunction with limestone powder is about 1g/cm 3, 1T/m namely 3So rotary valve ash discharge amount hourly is 40.7T, greater than deduster ash discharge amount hourly 30T, can meet the demands.Because rotary valve is by variable-frequency motor control, its rotational speed regulation scope is 0-750r/min, thus ash bucket per hour maximum ash discharge amount be about 50T, in use the regulating electric machine rotating speed is controlled the ash discharge amount of ash bucket according to the actual needs.
The dust that material elevator 1 is collected sack cleaner in the asphalt blending station imports in the ash bucket 2, when ash bucket 2 interior dust height arrive the rotating level-sensing device of high steric-hindrance amino 3 present position, the rotating level-sensing device 3 of high steric-hindrance amino will send switching signal and make rotary valve 4 and conveying worm 5 work, ash bucket 2 is to wetting stirrer 6 interior conveying dust, utilize the inflow of water inlet switch 7 control wetting stirrers 6, be provided with frequency converter in the described electrical control cabinet, can regulate the frequency of the variable-frequency motor power supply of control rotary valve 4 by described frequency converter, reach the purpose of the variable-frequency motor rotating speed of regulating rotary valve 4, thereby the ash quantity fed of control wetting stirrer 6, make the interior inflow of mixer and ash quantity fed reach predetermined charge ratio, dust is stirred according to predetermined humidity.The ash discharge speed of rotary valve 4 is not less than the grey speed of advancing of material elevator 1, the ash discharge speed of the present embodiment rotary valve 4 is set to the grey speed greater than advancing of material elevator 1, so ash bucket 2 interior dust height constantly descend, when the dust height arrives low level blocking rotary type level-sensing device 9 present position, rotary valve 4 quits work with conveying worm 5, wetting stirrer works on and just quits work about 10s, to discharge the dust of humidification of mixer inside, prevent from causing and condense, so far finish an operation cycle, and prepare to enter next operation cycle.When darg finishes, in order to prevent the inconvenience of working after dust remaining in ash bucket 2 and the pipeline causes bonding to cause, be provided with the forced service switch in the described electrical control cabinet, need to manually press the forced service switch, so that about each several part forced motor operation 10s, get rid of remaining dust in each equipment.
The glass cement sealing of acidity or alkalescence is all used in the junction of each equipment room of the controlled humidification agitating device of the described Asphalt concrete mixing of the present embodiment station dust, to prevent that dust fills the air in processing procedure.
Fig. 4 is the control principle drawing of electrical control cabinet among the controlled humidification agitating device embodiment of Asphalt concrete mixing of the present invention station dust, below in conjunction with Fig. 4 the present embodiment is further specified.
After asphalt concrete mixer production begins, the normal dedusting of sack cleaner, air switch QS closes, press start button SB2, auxiliary reclay KA1 and contactor KM1 in succession electric, material elevator motor M1 moves work, to be sent in the ash bucket by the dust that sack cleaner is collected, ash bucket sodalime stone flour dust quantity constantly increases, and rotary valve control motor M 2, conveying worm M3 and M4, wetting stirrer motor M 5, water inlet water pump M6 and wetting stirrer vibrator motor M7 all are in stop state.
When the height of ash bucket sodalime stone flour dirt arrived H2, low level blocking rotary type level-sensing device 9 sent triggering signal, K LowerClosure, the rotating level-sensing device 3 of high steric-hindrance amino sends triggering signal, K when the dust height arrives H1 OnClosed, auxiliary reclay KA2 and contactor KM2 and KM3 in succession electric, the KM3 normally-closed contact disconnects, make time relay KT1 dead electricity, its normally-closed contact is closed, and the motor M 2 and conveying worm motor M 3, the M4 that control rotary valve this moment start, dust is transported in the wetting stirrer, while contactor KM4 gets electric, and the motor M 5 of control wetting stirrer and water inlet pump motor M6 start, and begin normal humidification according to the inflow of being scheduled to and humidity and stir.
Because the output quantity amount of design ash bucket is greater than the sack cleaner output quantity, so ash bucket sodalime stone flour dirt height constantly descends.The rotating level-sensing device 3 of high steric-hindrance amino sends triggering signal, K when the not enough H1 of dust height OnDisconnect; Low level blocking rotary type level-sensing device 9 sends triggering signal, K when the dust height drops to H2 LowerDisconnect, auxiliary reclay KA2 and contactor KM3 dead electricity, the motor M 2 of control rotary valve and conveying worm motor M 3 and M4 quit work, and no longer carry dust in wetting stirrer.
Under the time-lag action of time-delay relay KT1, the contactor KM4 dead electricity of delaying time, the interior wetting stirrer of certain hour is still in work after motor M 2 stalls of control rotary valve, treat that the dust of humidification is substantially emptying in the wetting stirrer, contactor KM4 dead electricity, motor M 5 stalls of control wetting stirrer, subsequently pump motor M6 stall.So far finish an operation cycle, and prepare to enter next operation cycle.
When darg finishes, press the button SB3 each several part is quit work.In order to prevent the inconvenience of working after dust remaining in dust bucket, pipeline and the wetting stirrer causes bonding to cause, need to manually press the SB4 button, so that about each several part forced motor operation 10s, in order to remove residual dust, if having had certain viscosity, dust is attached in the wetting stirrer simultaneously start button SB5, Vibration on Start-up device M7 shakes output with the dust that adheres in the wetting stirrer, thoroughly empties.
Need to stop in emergency if unexpected incidents occur in the normal course of operation, can press the button SB1, then the motor of each equipment is incited somebody to action at once and dump, and is out of service.
The controlled humidification stirring means embodiment of Asphalt concrete mixing station dust
Fig. 5 is the flow chart of the controlled humidification stirring means of Asphalt concrete mixing of the present invention station dust, as shown in Figure 5, comprising:
Step 101: the material helicopter imports ash bucket with dust.
Step 103: whether the monitoring dust arrives the rotating level-sensing device of high steric-hindrance amino, if then carry out step 105 operation, start rotary valve, conveying worm and water inlet switch, dust is transported to wetting stirrer from described ash bucket, if not, then repeating step 101 operations continue the material helicopter dust is imported ash bucket.
Step 107: dust arrives low level blocking rotary type level-sensing device in the ash bucket, stops to carry dust in conveying worm;
Step 109: the wetting stirrer delay working is emptying to the dust of its inside humidification, and water pump quits work.
In the present embodiment, after described water pump quit work, described electrical control cabinet moved described forced service switch, got rid of remaining dust in each equipment, in order to avoid dust is residual, stopped up.
Therefore, the present invention is by adopting controlled humidification agitating device and the method for above-mentioned Asphalt concrete mixing station dust, control by the final stirring humidity to particulate dust, so that ash bucket and rotary valve cooperate the controllable continuous conveying of the flow of realizing particulate dust, cooperate simultaneously the control of wetting stirrer inflow, arrive the proportioning control of dust and amount of water, regulate the final stirring humidity of particulate dust, can effectively carry out the subsequent treatment of particulate dust, reduce environmental pollution and processing cost, can be used for the Asphalt concrete mixing station, need to dust according to the occasion that predetermined moisture stirs, there be good application value in mines etc.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.

Claims (10)

1. the controlled humidification agitating device of an Asphalt concrete mixing station dust comprises wetting stirrer, water inlet switch, water pump and electrical control cabinet, it is characterized in that, also comprises:
Ash bucket is used for the interim transfer storage of particulate dust;
Material elevator is used for the dust that the asphalt blending station sack cleaner is collected is imported in the described ash bucket;
The outlet of described ash bucket is connected with conveying worm, and described conveying worm is connected with described wetting stirrer.
2. the controlled humidification agitating device of Asphalt concrete mixing according to claim 1 station dust is characterized in that:
Described ash bucket top is rectangle part, and the bottom is trapezoidal portions.
3. the controlled humidification agitating device of Asphalt concrete mixing according to claim 2 station dust is characterized in that:
The exit of described ash bucket is provided with the rotary valve by variable-frequency motor control.
4. the controlled humidification agitating device of Asphalt concrete mixing according to claim 3 station dust is characterized in that:
Be provided with the rotating level-sensing device of high steric-hindrance amino and low level blocking rotary type level-sensing device on the described ash bucket, the rotating level-sensing device of described high steric-hindrance amino is arranged at the rectangle part middle part of described ash bucket, and described low level blocking rotary type level-sensing device is arranged at the trapezoidal portions middle part of described ash bucket.
5. the controlled humidification agitating device of Asphalt concrete mixing according to claim 4 station dust is characterized in that:
The ash discharge speed of described rotary valve is not less than the grey speed of advancing of described material elevator.
6. the controlled humidification agitating device of Asphalt concrete mixing according to claim 5 station dust is characterized in that:
Be provided with frequency converter in the described electrical control cabinet.
7. the controlled humidification agitating device of Asphalt concrete mixing according to claim 6 station dust is characterized in that:
Be provided with the forced service switch in the described electrical control cabinet.
8. the controlled humidification agitating device of Asphalt concrete mixing according to claim 7 station dust is characterized in that:
The glass cement sealing of acidity or alkalescence is all used in the junction of each equipment room of the controlled humidification agitating device of described Asphalt concrete mixing station dust.
9. the controlled humidification stirring means of the Asphalt concrete mixing station dust of the controlled humidification agitating device of a use Asphalt concrete mixing as claimed in claim 1 station dust is characterized in that, comprising:
The material helicopter imports ash bucket with dust, whether the monitoring dust arrives the rotating level-sensing device of high steric-hindrance amino, if then start rotary valve, conveying worm and water inlet switch, dust is transported to wetting stirrer from described ash bucket, if not, then the material helicopter continues dust is imported ash bucket;
Dust arrives low level blocking rotary type level-sensing device in the ash bucket, stops to carry dust in conveying worm;
The wetting stirrer delay working is emptying to the dust of its inside humidification, and water pump quits work.
10. the controlled humidification stirring means of the Asphalt concrete mixing station dust of controlled humidification agitating device according to claim 9 is characterized in that:
After described water pump quit work, described electrical control cabinet moved described forced service switch, got rid of remaining dust in each equipment.
CN2011104608934A 2011-12-31 2011-12-31 Controllable wetting and stirring device and method used for asphalt concrete mixing station dust Pending CN103072206A (en)

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CN104670825A (en) * 2015-01-13 2015-06-03 三一汽车制造有限公司 Spiral conveyor and mixing station
CN106693739A (en) * 2016-11-30 2017-05-24 广东交通职业技术学院 Equipment selection method for dust humidification stirring bead generation device
CN110028214A (en) * 2019-05-20 2019-07-19 科蓝博(北京)环境技术有限公司 A kind of Vertical Heat solution reaction kettle with agitating shaft
CN111356564A (en) * 2017-11-22 2020-06-30 电化株式会社 Mixture generating system
CN112681063A (en) * 2020-12-16 2021-04-20 徐州徐工养护机械有限公司 Method for treating recycled powder of asphalt mixing station
CN114953173A (en) * 2020-11-21 2022-08-30 福建泉工股份有限公司 Calculation method of target water adding amount during stirring and batching and accurate water adding system

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CN114953173B (en) * 2020-11-21 2023-05-30 福建泉工股份有限公司 Calculation method of target water adding amount during stirring ingredients and accurate water adding system
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Application publication date: 20130501