CN102200786A - Remote liquid level control device for light mineral wool sound-absorbing board waste systems - Google Patents
Remote liquid level control device for light mineral wool sound-absorbing board waste systems Download PDFInfo
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- CN102200786A CN102200786A CN2010101322220A CN201010132222A CN102200786A CN 102200786 A CN102200786 A CN 102200786A CN 2010101322220 A CN2010101322220 A CN 2010101322220A CN 201010132222 A CN201010132222 A CN 201010132222A CN 102200786 A CN102200786 A CN 102200786A
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Abstract
The invention discloses a remote liquid level control device for light mineral wool sound-absorbing board waste systems. The device provided by the invention comprises a liquid level detection device, a first controller, a second controller and a high/low liquid level indicating lamp, wherein the liquid level detection device is used for carrying out real-time detection on the liquid levels of waste tanks, and inputting the obtained detection values into the first controller; the first controller is used for comparing the detection values input by the liquid level detection device with a preset liquid level value pre-input in the first controller, inputting the comparison results to the high/low liquid level indicating lamp according to satisfied conditions, and outputting the results that the detection values are equal to or greater than a preset high liquid level value to the second controller; the second controller is used for controlling the operating state of a liquid transfer pump connected with the waste tanks through controlling a frequency converter according to the input results, thereby controlling and adjusting the heights of the liquid levels of the waste tanks; and the high/low liquid level indicating lamp is used for displaying the high/low liquid levels of the waste tanks according to the results input by the first controller. By using the device disclosed by the invention, the phenomena of empty tank and tank boil-overs of wastes are eliminated, the production efficiency is improved, and the consistency of product quality is ensured.
Description
Technical field
The present invention relates to the remote fluid level control device of a kind of mineral wool sound absorption board waste system.
Background technology
The main production process of mineral wool sound absorption board is: slip becomes raw sheet after mediation, moulding, drying, cutting, planing, primary coat, and raw sheet is made finished product through finishing steps such as embossing, mortise, secondary sprayings.
Present mineral wool sound absorption board electric-control system equipment is not considered the interference to electromagnetism when design and installation, growth with the production run time, the electromagnetic interference (EMI) that electric-control system produces has more and more seriously influenced the operate as normal of PLC communication system, cause communication often to be interrupted, cause dropout and control faults such as malfunctioning.
What the production technology of mineral wool sound absorption board realized is " zero-emission " theory, is about to waste product and makes waste material, participates in the manufacturing of product as one of raw material.The useless plate that each operation produces is made waste material at waste material pulping place, again according to the use amount of producing and the liquid level condition of waste tank, squeezes into waste tank outside 100 meters by the waste material pump.In existing production process, the start-stop of waste material pump and the liquid level of waste tank lay respectively in two PLC stack points, the liquid level of waste tank is presented at by the communication between 2 stack points on the touch-screen at waste material pulping place, is manually controlled the start-stop of waste material pump according to shown liquid level by the post worker.Seriously be subjected to the electromagnetic interference (EMI) of electric-control system generation because of the operate as normal of PLC communication system, so the shown liquid level of touch-screen often is false liquid level, the result that the post worker operates in view of the above causes the waste tank slack tank, the waste material amount can't satisfy technological requirement, cause the waste tank tank boil-overs exactly, a large amount of waste materials run off.
In fact, the communication between above-mentioned two stack points only limits to transmit the signal of waste tank liquid level, if carry out the transformation of PLC communication line, it is more relatively to inject capital into, and cost performance is not high.What is more important, no longer false even liquid level shows, manual fully because of the start-stop of waste material pump, post worker's misoperation also can cause the waste tank tank boil-overs.
Summary of the invention
The technical problem to be solved in the present invention provides the remote fluid level control device of a kind of light mineral wool acoustic board waste system, can realize the remote liquid level control of waste system, stops waste material slack tank and tank boil-overs phenomenon, enhances productivity.
In order to address the above problem, the invention provides the remote fluid level control device of a kind of light mineral wool acoustic board waste system, this device comprises:
Liquid level detection device detects in real time the liquid level of waste tank, and detected value is input in first controller;
First controller, liquid level detection device detected value of importing and the liquid level setting value of importing described first controller are in advance compared, and comparative result exported to high and low liquid level pilot lamp according to the condition that satisfies, simultaneously, the result who detected value is met or exceeded high liquid level setting value exports to second controller;
Second controller is controlled the duty of the liquid-feeding pump that links to each other with waste tank according to the result of input by the control of conversion device, thus the interior liquid level of regulating and controlling waste tank;
High and low liquid level pilot lamp, the result who imports according to described first controller shows the high and low liquid level of waste tank.
Preferably, described liquid level detection device adopts differential pressure transmitter, and output 4-20mA analog signals can accurately detect liquid level and transmission signals.
Preferably, also comprise liquid level display, this liquid level display links to each other with described first controller.
Preferably, described first controller and second controller are the PLC Programmable Logic Controller.
The present invention has following advantage:
1, the remote fluid level control device of Pei Zhi waste system is easy to be reliable, is convenient to personnel operation;
2, use modulus conversion technique and the remote liquid level control of comparison techniques realization waste system in real time, stop waste material slack tank and tank boil-overs phenomenon, enhance productivity, guarantee the consistance of product quality, improve resource utilization;
3, existing system hinders for some reason and causes the passive shutdown of factory to influence about 20,000 square meter/years of output, in 15 yuan of every square meter plate cost prices, after adopting the present invention, cocoa increases by 300,000 yuan/year of the output values, therefore has very good economic benefit, in addition, stop waste tank tank boil-overs phenomenon, can avoid having made the waste and artificial about 60,000 yuan/year of the cost of removing of waste material;
4, stop waste tank tank boil-overs phenomenon fully, avoided on the one hand the unnecessary consumption of waste material resource such as water, electricity in manufacturing process of emerging; Can avoid the pressure that the slug of emerging causes to sewage disposal system on the other hand even flow into the influence that storm-water system causes to environment.
Description of drawings
Fig. 1 is a structural representation block diagram of the present invention.
Embodiment
As shown in Figure 1, the present invention includes: liquid level detection device 1, first controller 2, high liquid level pilot lamp 3, low liquid level pilot lamp 4, second controller 5, frequency converter 6, liquid-feeding pump 7 and liquid level display 9.Effect and annexation to each structure is elaborated below.
Liquid level detection device 1 is used for the liquid level of waste tank 8 is detected in real time, and detected value is input in first controller 5.In the present invention, liquid level detection device adopts differential pressure transmitter, and output 4-20mA analog signals can accurately detect liquid level and transmission signals.Certainly, also can select the liquid level detecting sensor of other form for use.
High liquid level pilot lamp 3 and low liquid level pilot lamp 4 are used for showing the high and low liquid level of waste tank according to the result of first controller, 2 inputs.
Liquid level display 9 links to each other with first controller 2, is used for the auxiliary state that shows waste tank 8.
During concrete the use, at first the liquid level by 1 pair of waste tank 8 of liquid level detection device detects in real time, and detected value is input in first controller 2; Then, the detected value that 2 pairs of liquid level detection devices 2 of first controller are imported compares with the liquid level setting value of importing first controller 2 in advance, and first controller 2 is exported to high and low liquid level pilot lamp 3,4 with comparative result according to the condition that satisfies again; Simultaneously, the result who detected value is met or exceeded high liquid level setting value exports to second controller 5; At last, the duty of the liquid-feeding pump 7 that 6 controls of second controller link to each other with waste tank 8 is through the liquid level in the regulating and controlling waste tank 8 of frequency converter 6.
Adopt above-mentioned structure, the present invention uses modulus conversion technique and the remote liquid level control of comparison techniques realization waste system in real time, stops waste material slack tank and tank boil-overs phenomenon, enhances productivity, and guarantees the consistance of product quality, improves resource utilization.In addition, behind employing the present invention, 300,000 yuan/year of the output values can be increased, the waste and artificial about 60,000 yuan/year of the cost of removing of waste material can be avoided having made simultaneously.
In sum; being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention, therefore; all any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. remote fluid level control device of light mineral wool acoustic board waste system is characterized in that this device comprises:
Liquid level detection device detects in real time the liquid level of waste tank, and detected value is input in first controller;
First controller, liquid level detection device detected value of importing and the liquid level setting value of importing described first controller are in advance compared, and comparative result exported to high and low liquid level pilot lamp according to the condition that satisfies, simultaneously, the result who detected value is met or exceeded high liquid level setting value exports to second controller;
Second controller is controlled the duty of the liquid-feeding pump that links to each other with waste tank according to the result of input by the control of conversion device, thus the interior liquid level of regulating and controlling waste tank;
High and low liquid level pilot lamp, the result who imports according to described first controller shows the high and low liquid level of waste tank.
2. device as claimed in claim 1 is characterized in that, described liquid level detection device adopts differential pressure transmitter, and output 4-20mA analog signals can accurately detect liquid level and transmission signals.
3. device as claimed in claim 1 or 2 is characterized in that, described first controller and second controller are the PLC Programmable Logic Controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101322220A CN102200786A (en) | 2010-03-25 | 2010-03-25 | Remote liquid level control device for light mineral wool sound-absorbing board waste systems |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101322220A CN102200786A (en) | 2010-03-25 | 2010-03-25 | Remote liquid level control device for light mineral wool sound-absorbing board waste systems |
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| CN102200786A true CN102200786A (en) | 2011-09-28 |
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| CN2010101322220A Pending CN102200786A (en) | 2010-03-25 | 2010-03-25 | Remote liquid level control device for light mineral wool sound-absorbing board waste systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104025095A (en) * | 2011-10-05 | 2014-09-03 | 奥普唐公司 | Methods, apparatus, and systems for monitoring and/or controlling dynamic environments |
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Application publication date: 20110928 |
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