CN103802215A - Control device capable of improving weighing accuracy of mixing plant aggregate - Google Patents
Control device capable of improving weighing accuracy of mixing plant aggregate Download PDFInfo
- Publication number
- CN103802215A CN103802215A CN201210457909.0A CN201210457909A CN103802215A CN 103802215 A CN103802215 A CN 103802215A CN 201210457909 A CN201210457909 A CN 201210457909A CN 103802215 A CN103802215 A CN 103802215A
- Authority
- CN
- China
- Prior art keywords
- control device
- arc
- magnetic valve
- aggregate
- proximity switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
- B28C7/0418—Proportioning control systems therefor
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention relates to a control device capable of improving the weighing accuracy of mixing plant aggregate. The control device comprises an arc-gate cylinder and a weight sensor. The arc-gate cylinder is provided with a first proximity switch and a second proximity switch; an air inlet pipe and an air outlet pipe of the arc-gate cylinder are provided with electromagnetic valves; the weight sensor, the first proximity switch and the second proximity switch as well as the electromagnetic valves are all connected with a PLC (Programmable Logic Controller); the PLC is connected with a contactor. According to the control device, the control on the feeding amount can be realized flexibly so as to improve the weight accuracy of concrete aggregate, and the automatic closing of an arc gate for discharging can be realized under the working condition of power failure of a system. The control device is simple and convenient to operate, high in working efficiency, reliable to run, small in aggregate weighing errors, and high in accuracy.
Description
Technical field
The present invention relates to a kind of automaton of batching plant Weighing system, use it can improve the weighing precision of batching plant aggregate Weighing system.
Background technology
In concrete batching and mixing plant aggregate Weighing system, conventionally entering the aggregate that scale hooper weighs is all to rely on arc sluice gate as delivery device.Prior art adopts 2/2-way magnetic valve, only opens and closes two states and control the aperture size that weighs the unlatching of arc door.This kind of control mode is difficult to control flexibly the size of arc door discharging and the speed of blanking, thereby restricted the weighing precision of Weighing system.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of control device that can improve batching plant aggregate weighing precision, use that it is easy and simple to handle, work efficiency is high, reliable, aggregate weighing error is little, precision is high.
Above-mentioned purpose of the present invention is to realize by such technical scheme: a kind of control device that improves batching plant aggregate weighing precision, comprises arc door cylinder, weight sensor.The first approach switch and the second approach switch are installed on described arc door cylinder; Described arc door cylinder on tracheae, magnetic valve is installed; Described weight sensor, the first approach switch, the second approach switch and magnetic valve are all connected with PLC controller; Described PLC controller connects contactor; Described magnetic valve is connected with independent current source by contactor; Described magnetic valve is 3 position-5 way magnetic valve.
The present invention is a kind of control device that can improve batching plant aggregate weighing precision, compared with prior art, by setting up 3 position-5 way magnetic valve and being arranged on two approach switchs on arc door cylinder, realize the flexible control of discharging arc door position, thereby improved the precision of feeding coal.Adopt this kind of control mode weighing error can be controlled at ± 0.5% in, simultaneously under the operating mode of system blackout, can realize discharging arc door automatic door-closing, thereby improve the precision that aggregate weighs, and then improve the concrete quality of production.
Accompanying drawing explanation
Fig. 1 is control device electrical connection schematic diagram of the present invention.
The specific embodiment
As shown in Figure 1, improve a control device for batching plant aggregate weighing precision, comprise arc door cylinder 4, weight sensor 2, the first approach switch 5, the second approach switch 6 are installed on described arc door cylinder 4, described arc door cylinder 4 on tracheae, magnetic valve 3 is installed.Described weight sensor 2, the first approach switch 5, the second approach switchs 6, magnetic valve 3 all connects PLC controller 1; Described PLC controller 1 connects contactor 7.3 position-5 way magnetic valve is arranged on the loop of turnover tracheae of arc door cylinder 4, the first approach switch 5 and the second approach switch 6 are installed on arc door cylinder 4.Contactor 7 is for closing arc door, and described magnetic valve 3 is connected with independent current source 8 by contactor 7, and described magnetic valve 3 is 3 position-5 way magnetic valve.
Operation principle:
When Weighing system starts to weigh, PLC controller 1 is given the solenoid valve of opening the door, and arc door is opened completely, and at this time the first approach switch 5, the second approach switch 6 are not participated in control.In the time that aggregate is weighed to 80%, PLC controller 1 stops to the solenoid valve of opening the door, and changes into the solenoid valve of closing the door, and arc door can be closed.In the time that arc door is closed to certain position, described approach switch 6 is to PLC controller 1 output signal, and PLC controller 1 is made a response, the magnetic valve power-off of closing the door, and arc goalkeeper turns down and is parked in certain seat, and the aggregate that at this moment enters scale hooper diminishes.
In the time that weight sensor 2 monitoring weighings reach lead, PLC controller 1 powers again to the magnetic valve 3 of closing the door, and arc door is closed completely, and at this moment described approach switch 6 is given PLC controller 1 output signal, stops the solenoid valve of closing the door.Weighing arc door when preventing system blackout can not close automatically, and Gu Te adds an independent current source 8 for subsequent use, gives the solenoid valve of closing the door in the time having a power failure, and closes and weighs arc door.
Adopt control device of the present invention to control flexibly the size of feeding coal, realize that the coarse aggregate weighing error of Weighing system is controlled at ± 0.5% with interior (water conservancy project standard coarse aggregate weighing error ± 2%), under the operating mode of system blackout, can realize discharging arc door automatic door-closing simultaneously.Thereby improve the weighing precision of coarse aggregate, and then improved the concrete quality of production.
Claims (3)
1. one kind is improved the control device of batching plant aggregate weighing precision, comprise arc door cylinder (4), weight sensor (2), it is characterized in that, the first approach switch (5), the second approach switch (6) are installed on described arc door cylinder (4), described arc door cylinder (4) on tracheae, magnetic valve (3) is installed;
Described weight sensor (2), the first approach switch (5), the second approach switch (6), magnetic valve (3) all connects PLC controller (1), and described PLC controller (1) connects contactor (7).
2. a kind of control device that improves batching plant aggregate weighing precision according to claim 1, is characterized in that: described magnetic valve (3) is connected with independent current source (8) by contactor (7).
3. according to a kind of control device that improves batching plant aggregate weighing precision described in claim 1 or 2, it is characterized in that: described magnetic valve (3) is 3 position-5 way magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457909.0A CN103802215A (en) | 2012-11-15 | 2012-11-15 | Control device capable of improving weighing accuracy of mixing plant aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457909.0A CN103802215A (en) | 2012-11-15 | 2012-11-15 | Control device capable of improving weighing accuracy of mixing plant aggregate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103802215A true CN103802215A (en) | 2014-05-21 |
Family
ID=50699838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210457909.0A Pending CN103802215A (en) | 2012-11-15 | 2012-11-15 | Control device capable of improving weighing accuracy of mixing plant aggregate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103802215A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225971A (en) * | 2018-02-08 | 2018-06-29 | 重庆富皇建材有限公司 | Aggregate water content automatic checkout system |
| CN113043467A (en) * | 2021-02-25 | 2021-06-29 | 深圳市宏恒星再生科技有限公司 | Recycled aggregate ready-mixed mortar preparation facilities |
| CN113561330A (en) * | 2021-07-19 | 2021-10-29 | 三一汽车制造有限公司 | Quantitative batching method and device and stirring station |
-
2012
- 2012-11-15 CN CN201210457909.0A patent/CN103802215A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225971A (en) * | 2018-02-08 | 2018-06-29 | 重庆富皇建材有限公司 | Aggregate water content automatic checkout system |
| CN108225971B (en) * | 2018-02-08 | 2024-02-27 | 重庆富沛新型建材有限公司 | Automatic detection system for water content of concrete aggregate |
| CN113043467A (en) * | 2021-02-25 | 2021-06-29 | 深圳市宏恒星再生科技有限公司 | Recycled aggregate ready-mixed mortar preparation facilities |
| CN113561330A (en) * | 2021-07-19 | 2021-10-29 | 三一汽车制造有限公司 | Quantitative batching method and device and stirring station |
| CN113561330B (en) * | 2021-07-19 | 2023-02-28 | 三一汽车制造有限公司 | Quantitative batching method and device and mixing station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |