CN104298193A - Automatic autoclaved aerated concrete continuously matching system and control method thereof - Google Patents
Automatic autoclaved aerated concrete continuously matching system and control method thereof Download PDFInfo
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- CN104298193A CN104298193A CN201410457159.6A CN201410457159A CN104298193A CN 104298193 A CN104298193 A CN 104298193A CN 201410457159 A CN201410457159 A CN 201410457159A CN 104298193 A CN104298193 A CN 104298193A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 37
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims description 56
- 238000003756 stirring Methods 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 18
- 238000009472 formulation Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 230000001351 cycling effect Effects 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000013523 data management Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000004584 weight gain Effects 0.000 claims description 3
- 235000019786 weight gain Nutrition 0.000 claims description 3
- 238000005303 weighing Methods 0.000 abstract description 6
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000012797 qualification Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 6
- 239000002002 slurry Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Automation & Control Theory (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses an automatic autoclaved aerated concrete continuously matching system and a control method thereof and belongs to the field of automatic matching control. The automatic autoclaved aerated concrete continuously matching system and the control method thereof achieve the purposes of automatic matching and real-time control of a computer, centralized control is achieved, on-site equipment can be monitored and controlled, matching, weighing and time counting are automatically conducted in order, the product qualification rate is improved, and production is elaborate, controllable and scientific. A PLC connected with a central controller and an auxiliary control touch screen through cables is started, the output of the PLC controls multiple intermediate relays so as to send control instructions to all execution components in a concrete mixing plant, and therefore the executing components act according to parameters set by an upper computer. In addition, part of operation is cyclic, the manual operation amount is reduced, the manual operation pressure is lowered, errors which frequently occur due to manual operation are avoided, and the production efficiency is improved.
Description
Technical field
The invention belongs to Automatic Burden Control System field, more particularly, relate to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system and control method thereof.
Background technology
Traditional proportioning manually carries out, and blending process can produce a large amount of dust, even if wear mouth mask, long-term work still
Harm can be produced, if automation equipment can be used, when can greatly reduce the work of workman under dust atmosphere to workman's health
Between, and can human cost be reduced.Meanwhile, great majority batching commonly uses the little kind raw material of part, and usual way is by former for little kind
Material in advance premix, namely after manual weighing again by manually dropping into storage bin(hopper), so usually can there is weighting error or throw in mistake
Situation, have a strong impact on production efficiency and cost.And existing feed proportioning system controls dispersion, by digital weighing device, stopwatch metering time limit, manual operation.In operation, data error is comparatively large, cannot monitor equipment on the spot, and the time holds inaccurate, very high to the operation requirements of people.At present; China's concrete mixing plant forward intellectuality, environmental protection, high precision int, standardization, production domesticization, miniaturization, universalness future development, so be with a wide range of applications and important scientific value for the research of the control technology of concrete mixing plant.Concrete mixing plant blending process runs, in order to ensure that proportioning accuracy just must improve the real-time of blending process in dynamic process high speed.
Summary of the invention
, the problem that will solve
For the above-mentioned problems in the prior art, the invention provides a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system and control method thereof and achieve computer automation batching, accomplish centralized control, accomplish to monitor controlled to equipment on the spot, to batch weighing, time counting automatic order, improve product percent of pass, meticulous, controlled, science is accomplished to production.
, technical scheme
In order to solve the problem, the technical solution adopted in the present invention is as follows:
A control method for steam-pressing aero-concrete Automatic continuous feed proportioning system, comprises the steps:
Step 1, by the formulation data needed for host computer setting batching and manufacturing parameter, and send production ordering, described upper
Machine is made up of middle control machine and auxiliary control touch-screen;
The PLC Programmable Logic Controller that step 2, startup utilize communication cable to be connected with auxiliary control touch-screen with middle control machine respectively, described PLC Programmable Logic Controller exports and controls multiple auxiliary reclay, send steering order with execution unit each in concrete mixing plant, the manufacturing parameter that each execution unit is set according to host computer carries out action;
Step 3, utilize LOAD CELLS to detect each raw material cabin in real time to deliver to material name in corresponding metering stirred pot and weight successively and to add up in information and to be sent to PLC, and each material name LOAD CELLS transmitted in described PLC and weight gain corresponding to metering stirred pot carry out com-parison and analysis with the corresponding formulation data that host computer sets, when raw material information is consistent with formulation data, described PLC Programmable Logic Controller sends control door shutdown signal to the raw material cabin of correspondence, otherwise continue open raw material cabin to throwing raw materials in slurry tank, until all raw material cabin doors are closed,
Step 4, described PLC send steering order and start corresponding stirring machine in metering stirred pot and start to be stirred to stirring and complete;
Step 5, described PLC send charging instruction, treat to measure stirred pot accordingly after the charging of cast stirred pot, carried out the setting of mixing time by host computer, the stirring machine that then startup cast stirred pot is corresponding starts to be stirred to stirring to be completed;
Step 6, described PLC Programmable Logic Controller send cycling instruction, cycling step 4 and step 5, until after the raw material in metering stirred pot after stirring all loads cast stirred pot.
Further, whether described PLC utilizes the limit switch being installed on each execution unit place to detect it to perform and put in place.
Further, the transmission signal of described LOAD CELLS inputs PLC Programmable Logic Controller through signal circuit after being amplified by signal amplification unit.
Further, after each raw material cabin has descended material in corresponding metering stirred pot, LOAD CELLS has detected each metering stirred pot information in real time and has been sent to PLC, resets.
Further, also comprise the steps: in each execution unit course of action of described PLC Controlled by Programmable Controller, described host computer probe monitors production status, and to be produced complete after the described PLC Programmable Logic Controller of reading batching data after be stored in data management system; Described monitoring probe is arranged on each blanking outlet.
Further, for arranging the host computer of the concurrent formulation data needed for expecting of providing and delivering, manufacturing parameter information, described host computer is made up of middle control machine and auxiliary control touch-screen; Deliver to raw material weight in corresponding metering stirred pot and weight by each raw material cabin to add up residual quantity for detecting, and generate the LOAD CELLS that raw material information sends in real time, described host computer is connected respectively with LOAD CELLS; For receiving information that host computer and LOAD CELLS transmit and send the PLC Programmable Logic Controller of steering order after logical circuit, described PLC Programmable Logic Controller is connected respectively with execution unit each in concrete mixing plant; For performing the auxiliary reclay of the steering order of PLC Programmable Logic Controller; Described steering order comprise continue in metering stirred pot throwing raw materials to formulation data requirement, measure stop throwing raw materials, be uniformly mixed after raw material, transferring raw material to pouring into a mould stirred pot, cast stirred pot discharging, stirring machine stir and stop stirring.
Further, also comprise and be connected respectively with each execution unit in concrete mixing plant with described PLC Programmable Logic Controller, whether perform and put in place for detecting each execution unit and send the limit switch controlling travel information to PLC Programmable Logic Controller.
Further, also comprise and be connected to signal amplification unit between described LOAD CELLS and PLC Programmable Logic Controller and signal circuit.
Further, described execution unit comprises the motor utilizing the pneumatic door of solenoid control and utilize the time relay and contactor to control, described pneumatic door be separately positioned on each raw material cabin, metering stirred pot, stirred pot and each weight scale outlet, described motor is eight, is respectively raw material sending mechanism conveying motor and metering stirred pot stirring machine, stirred pot rabbling mechanism drive motor.
Further, described PLC utilizes telecommunication cable to be connected with auxiliary control touch-screen with master control industrial computer respectively.
, beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1), adopt in the control method that matches of control machine, PLC and auxiliary control touch-screen, i.e. button-free, nothing
Instrument control mode, achieves centralized operation, decentralised control, realizes intelligent, multi-functional, safe, efficient, full automatic control to concrete mixing plant.So-called decentralised control is exactly that controlling functions is dispersed in different controllers and completes, and utilize the communication technology to realize contact between each several part and coordination, also reach the object that dispersion is dangerous, safe reliability is higher.Its control operation function completes on middle control machine or auxiliary control touch-screen, by telecommunication cable, production ordering is delivered in PLC Programmable Logic Controller, PLC Programmable Logic Controller is for realizing automatically controlling in real time of concrete mixing plant, receive information, the external input signal of host computer, export after Logic judgment and control auxiliary reclay.Can not only the production procedure of control & monitor concrete mixing plant automatically, and the data management of concrete production can be realized;
(2), auxiliary control touch-screen replacement external hanging type weighing instrument realizes data display function, compensate for the deficiency not having Displaying Meter, communication link in the middle of simultaneously reducing, touch-screen analog buttons replaces operator's console button, all manual control parts all can complete on the touchscreen, it exchanges data by communication cable and PLC Programmable Logic Controller, enormously simplify system distribution, alleviate line service amount, eliminate instrument, reduce system hardware cost payout, be applicable to the preparation to the more commerical ready-mixed concrete of feed proportioning system functional requirement;
(3), middle control machine is as the command centre of system, and PLC Programmable Logic Controller is as the control center of system, the two division of labor is clear and definite, controlling coexists in PLC Programmable Logic Controller with blending process completes, the internal coordination of program is good, can be added water in production run diminishing at any time, broken away from the excessive dependence of system to industrial computer.In addition, because the stability of PLC is far away higher than middle control machine, therefore there will not be the problem such as systemic breakdown, virus infections, is non-maintaining substantially;
(4), middle control machine and auxiliary control touch-screen, the two exchanges data with PLC Programmable Logic Controller simultaneously, and a machine dual control, simultaneous display, substantially increase system stability; When central control machine breaks down, during auxiliary control touch-screen can replace, control machine completes fully-automatic production function, the problem causing mixing plant to stop production when solving industrial computer fault;
(5), PLC Programmable Logic Controller itself do not possess human-computer interaction function, and the program of writing can only running background, and when the more needs of processing parameter adjust flexibly, using touch-screen to realize man-machine interaction is exactly a kind of well selection mutually.Be combined by auxiliary control touch-screen and PLC Programmable Logic Controller, formula and various manufacturing parameter can be set in auxiliary control touch-screen, and system running state can be monitored in real time, data on Display Scale, the functions such as simulation animation display;
(6) PC control part has function production control process, transmits formulation data, manufacturing parameter; Read slave computer data, monitoring production status, storage and print the function such as production data, fault alarm;
(7) the metering stirred pot by arranging, fully mixes raw material through sufficient stirring, ensure raw material even after be delivered into cast stirred pot again, improve the error between slurry compositions production value and setting value, improve the quality of products, reduce product rejection rate;
(8) the cycling instruction that sends of PLC, substantially reduces manual operation load, reduces operative's pressure, avoids the error that manual operation often occurs, and improve production efficiency;
(9), under the prerequisite not reducing accuracy of weighing, reduce the use of LOAD CELLS, reduce equipment cost;
(10) monitoring probe, by arranging, can the running status of each executive component of Real-Time Monitoring, and easily finds production problem, is convenient to searching problem place, substantially reduces servicing time, enhance productivity.
Accompanying drawing explanation
Fig. 1 is Control system architecture schematic diagram of the present invention;
Fig. 2 is that control system of the present invention runs main interfacial structure schematic diagram.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
As depicted in figs. 1 and 2, a kind of control method of steam-pressing aero-concrete Automatic continuous feed proportioning system, comprises the steps:
Step 1, by the formulation data needed for host computer setting batching and manufacturing parameter, and send production ordering, described upper
Machine is made up of middle control machine and auxiliary control touch-screen;
The PLC Programmable Logic Controller that step 2, startup utilize communication cable to be connected with auxiliary control touch-screen with middle control machine respectively, described PLC Programmable Logic Controller exports and controls multiple auxiliary reclay, send steering order with execution unit each in concrete mixing plant, the manufacturing parameter that each execution unit is set according to host computer carries out action;
Step 3, utilize LOAD CELLS to detect each raw material cabin in real time to deliver to material name in corresponding metering stirred pot and weight successively and to add up in information and to be sent to PLC, and each material name LOAD CELLS transmitted in described PLC and weight gain corresponding to metering stirred pot carry out com-parison and analysis with the corresponding formulation data that host computer sets, when raw material information is consistent with formulation data, described PLC Programmable Logic Controller sends control door shutdown signal to the raw material cabin of correspondence, otherwise continue open raw material cabin to throwing raw materials in slurry tank, until all raw material cabin doors are closed,
Step 4, described PLC send steering order and start corresponding stirring machine in metering stirred pot and start to be stirred to stirring and complete; By the metering stirred pot arranged, raw material is fully mixed through sufficient stirring, ensure raw material even after be delivered into cast stirred pot again, improve the error between slurry compositions production value and setting value, improve the quality of products, reduce product rejection rate;
Step 5, described PLC send charging instruction, treat to measure stirred pot accordingly after the charging of cast stirred pot, carried out the setting of mixing time by host computer, the stirring machine that then startup cast stirred pot is corresponding starts to be stirred to stirring to be completed;
Step 6, described PLC Programmable Logic Controller send cycling instruction, cycling step 4 and step 5, until after the raw material in metering stirred pot after stirring all loads cast stirred pot.The cycling instruction that PLC sends, substantially reduces manual operation load, reduces operative's pressure, avoids the error that manual operation often occurs, and improve production efficiency.
Also comprise the steps, whether described PLC utilizes the limit switch being installed on each execution unit place to detect it and performs and put in place.Through signal circuit input PLC Programmable Logic Controller after the transmission signal of described LOAD CELLS is amplified by signal amplification unit.After each raw material cabin has descended material in corresponding metering stirred pot, LOAD CELLS has detected each metering stirred pot information in real time and has been sent to PLC, resets.In each execution unit course of action of described PLC Controlled by Programmable Controller, described host computer probe monitors production status, and to be produced complete after the described PLC Programmable Logic Controller of reading batching data after be stored in data management system; Described monitoring probe is arranged on each blanking outlet.By the monitoring probe arranged, can the running status of each executive component of Real-Time Monitoring, and easily find production problem, be convenient to searching problem place, substantially reduce servicing time, enhance productivity.
This steam-pressing aero-concrete Automatic continuous feed proportioning system, comprise the host computer for arranging the concurrent formulation data needed for expecting of providing and delivering, manufacturing parameter information, described host computer is made up of middle control machine and auxiliary control touch-screen; Deliver to raw material weight in corresponding metering stirred pot and weight by each raw material cabin to add up residual quantity for detecting, and generate the LOAD CELLS that raw material information sends in real time, described host computer is connected respectively with LOAD CELLS; For receiving information that host computer and LOAD CELLS transmit and send the PLC Programmable Logic Controller of steering order after logical circuit, described PLC Programmable Logic Controller is connected respectively with execution unit each in concrete mixing plant; For performing the auxiliary reclay of the steering order of PLC Programmable Logic Controller; Described steering order comprise continue in metering stirred pot throwing raw materials to formulation data requirement, measure stop throwing raw materials, be uniformly mixed after raw material, transferring raw material to pouring into a mould stirred pot, cast stirred pot discharging, stirring machine stir and stop stirring.
In addition, also comprise and be connected respectively with each execution unit in concrete mixing plant with described PLC Programmable Logic Controller, whether perform and put in place for detecting each execution unit and send the limit switch controlling travel information to PLC Programmable Logic Controller.Also comprise and be connected to signal amplification unit between described LOAD CELLS and PLC Programmable Logic Controller and signal circuit.Described execution unit comprises the motor utilizing the pneumatic door of solenoid control and utilize the time relay and contactor to control, described pneumatic door be separately positioned on each raw material cabin, metering stirred pot, stirred pot and each weight scale outlet, described motor is eight, is respectively raw material sending mechanism conveying motor and metering stirred pot stirring machine, stirred pot rabbling mechanism drive motor.Described PLC utilizes telecommunication cable to be connected with auxiliary control touch-screen with master control industrial computer respectively.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (10)
1. a control method for steam-pressing aero-concrete Automatic continuous feed proportioning system, is characterized in that, comprises the steps:
Step 1, by the formulation data needed for host computer setting batching and manufacturing parameter, and send production ordering, described upper
Machine is made up of middle control machine and auxiliary control touch-screen;
The PLC Programmable Logic Controller that step 2, startup utilize communication cable to be connected with auxiliary control touch-screen with middle control machine respectively, described PLC Programmable Logic Controller exports and controls multiple auxiliary reclay, send steering order with execution unit each in concrete mixing plant, the manufacturing parameter that each execution unit is set according to host computer carries out action;
Step 3, utilize LOAD CELLS to detect each raw material cabin in real time to deliver to material name in corresponding metering stirred pot and weight successively and to add up in information and to be sent to PLC, and each material name LOAD CELLS transmitted in described PLC and weight gain corresponding to metering stirred pot carry out com-parison and analysis with the corresponding formulation data that host computer sets, when raw material information is consistent with formulation data, described PLC Programmable Logic Controller sends control door shutdown signal to the raw material cabin of correspondence, otherwise continue open raw material cabin to throwing raw materials in metering stirred pot, until all raw material cabin doors are closed,
Step 4, described PLC send corresponding stirring machine in steering order startup metering stirred pot and start to stir until stirred;
Step 5, described PLC send charging instruction, treat to measure stirred pot accordingly after the charging of cast stirred pot, carried out the setting of mixing time by host computer, the stirring machine that then startup cast stirred pot is corresponding starts to be stirred to stirring to be completed;
Step 6, described PLC Programmable Logic Controller send cycling instruction, cycling step 4 and step 5, until after the raw material in metering stirred pot after stirring all loads cast stirred pot.
2. according to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system described in claim 1 and control method thereof, it is characterized in that: whether described PLC utilizes the limit switch being installed on each execution unit place to detect it and perform and put in place.
3. according to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system described in claim 1 and control method thereof, it is characterized in that: through signal circuit input PLC Programmable Logic Controller after the transmission signal of described LOAD CELLS is amplified by signal amplification unit.
4. according to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system described in claim 1 and control method thereof, it is characterized in that: after each raw material cabin has descended material in corresponding metering stirred pot, LOAD CELLS detects each metering stirred pot information in real time and is sent to PLC, resets.
5. according to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system described in claim 1 and control method thereof, it is characterized in that: also comprise the steps: in each execution unit course of action of described PLC Controlled by Programmable Controller, described host computer probe monitors production status, and to be produced complete after the described PLC Programmable Logic Controller of reading batching data after be stored in data management system; Described monitoring probe is arranged on each blanking outlet.
6. a steam-pressing aero-concrete Automatic continuous feed proportioning system, its spy is characterised in that, comprising: for arranging the host computer of the concurrent formulation data needed for expecting of providing and delivering, manufacturing parameter information, described host computer is made up of middle control machine and auxiliary control touch-screen; Deliver to raw material weight in corresponding metering stirred pot and weight by each raw material cabin to add up residual quantity for detecting, and generate the LOAD CELLS that raw material information sends in real time, described host computer is connected respectively with LOAD CELLS; For receiving information that host computer and LOAD CELLS transmit and send the PLC Programmable Logic Controller of steering order after logical circuit, described PLC Programmable Logic Controller is connected respectively with execution unit each in concrete mixing plant; For performing the auxiliary reclay of the steering order of PLC Programmable Logic Controller; Described steering order comprise continue in metering stirred pot throwing raw materials to formulation data requirement, measure stop throwing raw materials, be uniformly mixed after raw material, transferring raw material to pouring into a mould stirred pot, cast stirred pot discharging, stirring machine stir and stop stirring.
7. according to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system described in claim 6, it is characterized in that: also comprise and be connected respectively with each execution unit in concrete mixing plant with described PLC Programmable Logic Controller, whether perform and put in place for detecting each execution unit and send the limit switch controlling travel information to PLC Programmable Logic Controller.
8. according to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system described in claim 6, it is characterized in that: also comprise and be connected to signal amplification unit between described LOAD CELLS and PLC Programmable Logic Controller and signal circuit.
9. according to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system described in claim 6, it is characterized in that: described execution unit comprises the motor utilizing the pneumatic door of solenoid control and utilize the time relay and contactor to control, described pneumatic door be separately positioned on each raw material cabin, metering stirred pot, stirred pot and each weight scale outlet, described motor is eight, is respectively raw material sending mechanism conveying motor and metering stirred pot stirring machine, stirred pot rabbling mechanism drive motor.
10., according to a kind of steam-pressing aero-concrete Automatic continuous feed proportioning system described in claim 6, it is characterized in that: described PLC utilizes telecommunication cable to be connected with auxiliary control touch-screen with master control industrial computer respectively.
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