CN101255621A - Negative pressure control method for compact spinning negative pressure system - Google Patents
Negative pressure control method for compact spinning negative pressure system Download PDFInfo
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- CN101255621A CN101255621A CNA2008100235891A CN200810023589A CN101255621A CN 101255621 A CN101255621 A CN 101255621A CN A2008100235891 A CNA2008100235891 A CN A2008100235891A CN 200810023589 A CN200810023589 A CN 200810023589A CN 101255621 A CN101255621 A CN 101255621A
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Abstract
The invention relates to a negative pressure control method of a compact yarn negative pressure system, the compact yarn negative pressure system comprises a negative pressure centrifugal blower, a blower motor, a filtering device and an air duct, the flow direction of the negative pressure airflow is: the negative pressure airflow passes through a compact yarn device and enters the air duct, the filtering device and the blower, and then being discharged, which is characterized in that: mounting a pressure pickup and alarming device on the end of the air duct far away from the blower, the pressure pickup takes a two-way communication with the transducer of the blower motor, the pressure pickup and alarming device take a one-way communication, setting a pressure range for the pressure pickup, the range is the needed negative pressure range of the compact yarn device, the pressure pickup takes the one-way communication with the relay of the compact yarn mainframe. Through the application of the invention, the negative pressure stability of the compact yarn device is better ensured during the whole spinning course, so the negative pressure stability in the whole spinning course is ensured, ensuring the quality of the final yarn. At the same a good protection to the blower motor is played.
Description
Technical field
The present invention relates to a kind of negative pressure control method that is used for the compact spinning negative pressure system.Belong to compact spinning negative pressure control system technical field.
Background technology
Traditional ring spinning yarn technology has had the developing history of decades in China, but because its more structural problems, determined the fiber strip after drafted between the twisting point, to have a spinning triangular zone at front roller nip, fibre bundle in this trigonum after drafted is flat bar shaped, the edge fiber is without any constraint, thereby wherein a part of edge fiber one end or all break away from the main fibre bundle and form filoplume and flyings, filoplume produces bigger negative effect to later process, and flyings pollute workshop the working environment of workers.Most edges fiber not exclusively stretches when advancing to the twisting point, so they are little and cause yarn strength to be difficult to improve to the yarn strength contribution, thereby influences weaving efficiency.In order to solve this difficult problem, in recent years, a kind of compact frame spinning yarn machine of numerous and confused both at home and abroad release, this equipment mainly by negative-pressure air-flow be used for control front roller nip to the fibre bundle between the twisting point, reduce even eliminate the spinning triangular zone of ring spinner, thereby make yarn strength improve, fibrous index improves greatly.
The negative-pressure air-flow route generally is by discharging behind the parts such as compact spinning apparatus, air channel, filter, negative pressure centrifugal blower.Because the special working environment of textile mills, after deposition short flannel amount surpassed some on the filter, the required insufficient pressure of compact spinning apparatus and influence yarn quality was when the short flannel deposition can cause the blower motor overload and burn motor when seriously in time not clearing up.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of negative pressure control method of simple, reliable compact spinning negative pressure system is provided,, be lowered into the difference of yarn quality, eliminate blower motor overload phenomenon and take place to guarantee compact spinning apparatus negative regulation in the spinning process.
The object of the present invention is achieved like this: the negative pressure control method of a kind of compact spinning negative pressure system, described compact spinning negative pressure system comprises the negative pressure centrifugal blower, blower motor, filter and air channel, the flow direction of negative-pressure air-flow is: negative-pressure air-flow enters the air channel successively by compact spinning apparatus, discharge behind filter and the blower fan, its point is: the end in the air channel away from the negative pressure centrifugal blower installs pressure sensor and warning device additional, pressure sensor and blower motor frequency converter carry out both-way communication, form closed-loop control system, pressure sensor and warning device carry out one-way communication, sensor output signal is given warning device, whether control it reports to the police, the online at any time detection of pressure sensor air channel terminal pressure size also outputs signal to blower motor frequency converter and warning device, set a pressure limit to pressure sensor, this scope is exactly the required range of negative pressure of compact spinning apparatus, pressure sensor with closely spin the main frame relay and carry out one-way communication, after blower fan work a period of time, when deposition cotton short flannel surpasses some on the filter in the negative pressure system, because reducing, the whole system air inflow causes pressure reduction in the air channel, when dropping to pressure sensor, pressure sets down in limited time, sensor output signal fan motor frequency converter, frequency converter frequency improves, according to motor rotary speed formula n=60f/p, motor number of pole-pairs p is a steady state value, the corresponding rising of rotation speed n when frequency f raises, because motor rotary speed raises, the also corresponding rising of negative pressure system pressure, at this moment, two kinds of possibilities are arranged, if air channel terminal pressure overpressure sensor settings value, then pressure sensor outputs signal to blower motor frequency converter reduction frequency; If the air channel terminal pressure does not still reach the pressure sensor setting value, then the blower motor frequency converter frequency raises again, satisfy pressure sensor until the air channel terminal pressure and set requirement, if the blower motor frequency converter frequency is elevated to when frequency converter is set maximum and does not still meet the demands, then pressure sensor outputs signal to warning device, warning device is reported to the police automatically, require the staff to assist to clear up the cotton short flannel that deposits on the negative pressure system filter this moment, in time after the cleaning, pressure sensor outputs signal to warning device, warning device automatically terminates warning, equipment runs well, if the warning five-minute period is cleaning not, then the pressure sensor output signal is to closely spinning main frame, the parking of cutting off the power supply automatically of tight spinning equipment.
By utilization of the present invention, can well guarantee compact spinning apparatus at whole spinning process negative regulation, therefore can guarantee whole spinning process negative regulation, guarantee the stability of yarn quality.Can play a good protection to blower motor again simultaneously.
Description of drawings
Fig. 1 is the negative pressure control method schematic diagram of compact spinning negative pressure of the present invention system.
Among the figure: negative pressure centrifugal blower 1, blower motor 2, blower motor frequency converter 3, filter 4, air channel 5, warning device 6, pressure sensor 7.
The specific embodiment
Figure 1 shows that compact spinning negative pressure system involved in the present invention, in this system, under the effect of negative pressure centrifugal blower 1, the negative-pressure air-flow flow direction is: air communication is crossed compact spinning apparatus and is entered air channel 5, filter 4, bellows and blower fan 1 back discharge successively.Because this negative pressure system is used for textile mills, the characteristics of particular job environment such as flyings, dust and cotton short flannel be many in the workshop and equipment, air channel 5 length are longer, so pressure sensor 7 is installed in the most tangible end away from blower fan 1 of negative pressure variation, pressure sensor 7 and blower motor frequency converter 3 carry out both-way communication, form closed-loop control system.Pressure sensor 7 carries out one-way communication with warning device 6, and sensor 7 outputs signal to warning device 6, controls it and whether reports to the police.The online at any time detection of pressure sensor air channel terminal pressure size also outputs signal to blower motor frequency converter and warning device.
According to the spinning process requirement, the compact spinning apparatus negative pressure must remain on the stability that a reasonable range could guarantee yarn quality.In order to ensure yarn quality, set the range of negative pressure of working in the air channel by pressure sensor 7.Flyings, dust and cotton short flannel enter air channel 5 by compact spinning apparatus in the workshop, under the effect of negative pressure centrifugal blower 1, finally they are deposited on the negative pressure system filter 4, when deposit thickness reaches some, because the filter Air permenbility reduces, negative pressure centrifugal blower 1 air inflow reduces, the air channel internal pressure descends, when dropping to pressure sensor 7, pressure sets down in limited time, pressure sensor 7 outputs signal to blower motor frequency converter 3, require frequency converter 3 output frequencies to raise, blower motor 2 rotating speeds improve, the corresponding rising of operating pressure.But the frequency converter output frequency is not unrestrictedly to improve, the highest output frequency of frequency converter is according to the blower fan system performance setting, if blower motor 2 rotating speeds are mentioned the highest, when the work negative pressure still can not meet the demands the spinning process requirement, at this moment, blower motor frequency converter 3 goes out signal and gives pressure sensor 7, and acquisition request reduces the signal of frequency, prevents the running of blower motor long term overloading and burns.Pressure sensor outputs signal to warning device 6 simultaneously, and warning device 6 is reported to the police after receiving signal automatically, requires the related work personnel to clear up the cotton short flannel of deposition on the filter 4.The also not cleaning in five minutes if report to the police, pressure sensor outputs signal to the main frame relay, the main frame parking of cutting off the power supply automatically, thus avoid a large amount of yarn production off quality to come out.When the cotton short flannel of cleaning out on the filter, restart main frame after, whole system comes back to the preliminary examination state.In time clear up filter within reporting to the police five minutes at warning device, then pressure sensor 7 outputs signal to warning device 6 and removes warning, and equipment runs well.
Claims (1)
1, the negative pressure control method of a kind of compact spinning negative pressure system, described compact spinning negative pressure system comprises the negative pressure centrifugal blower, blower motor, filter and air channel, the flow direction of negative-pressure air-flow is: negative-pressure air-flow enters the air channel successively by compact spinning apparatus, discharge behind filter and the blower fan, it is characterized in that: the end in the air channel away from the negative pressure centrifugal blower installs pressure sensor and warning device additional, the frequency converter of pressure sensor and blower motor carries out both-way communication, pressure sensor and warning device carry out one-way communication, set a pressure limit to pressure sensor, this scope is exactly the required range of negative pressure of compact spinning apparatus, pressure sensor with closely spin the main frame relay and carry out one-way communication, after cotton short flannel deposit thickness reaches some on the negative pressure system filter, pressure is brought down below the pressure sensor setting down in limited time in the air channel, sensor output signal fan motor frequency converter, the frequency converter output frequency raises, motor rotary speed increases, and operating pressure raises; Operating pressure still is lower than the pressure sensor setting down in limited time when the frequency converter output frequency is elevated to frequency converter setting highest frequency, sensor output signal is to warning device, warning device is reported to the police automatically, this moment is if in time clean out filter, then pressure sensor outputs signal to warning device, and warning device automatically terminates warning; Continuity was not cleared up filter after five minutes if report to the police, and then pressure sensor outputs signal to the main frame relay, closely spinning equipment outage automatic stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100235891A CN101255621A (en) | 2008-04-09 | 2008-04-09 | Negative pressure control method for compact spinning negative pressure system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100235891A CN101255621A (en) | 2008-04-09 | 2008-04-09 | Negative pressure control method for compact spinning negative pressure system |
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| CN101255621A true CN101255621A (en) | 2008-09-03 |
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| CNA2008100235891A Pending CN101255621A (en) | 2008-04-09 | 2008-04-09 | Negative pressure control method for compact spinning negative pressure system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994179A (en) * | 2009-08-07 | 2011-03-30 | 立达英格尔施塔特有限公司 | Spinning machine with suction apparatus and method for controlling suction apparatus of spinning machine |
| CN102747471A (en) * | 2012-07-17 | 2012-10-24 | 南通市苏中纺织有限公司 | Self-controlled speed-regulating and pressure-regulating drawing frame |
| CN104372464A (en) * | 2014-11-25 | 2015-02-25 | 经纬纺织机械股份有限公司 | Compact spinning negative pressure control device |
| CN104480582A (en) * | 2014-11-25 | 2015-04-01 | 经纬纺织机械股份有限公司 | Compact spinning negative pressure control method |
| CN108873801A (en) * | 2018-07-26 | 2018-11-23 | 南通华强布业有限公司 | A kind of compact spinning constant-pressure control device |
| CN113623250A (en) * | 2021-08-27 | 2021-11-09 | 江苏格罗瑞节能科技有限公司 | Compact spinning negative pressure integrated constant pressure fan |
-
2008
- 2008-04-09 CN CNA2008100235891A patent/CN101255621A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994179A (en) * | 2009-08-07 | 2011-03-30 | 立达英格尔施塔特有限公司 | Spinning machine with suction apparatus and method for controlling suction apparatus of spinning machine |
| CN101994179B (en) * | 2009-08-07 | 2015-05-20 | 立达英格尔施塔特有限公司 | Spinning machine with suction apparatus and method for controlling suction apparatus of spinning machine |
| CN102747471A (en) * | 2012-07-17 | 2012-10-24 | 南通市苏中纺织有限公司 | Self-controlled speed-regulating and pressure-regulating drawing frame |
| CN104372464A (en) * | 2014-11-25 | 2015-02-25 | 经纬纺织机械股份有限公司 | Compact spinning negative pressure control device |
| CN104480582A (en) * | 2014-11-25 | 2015-04-01 | 经纬纺织机械股份有限公司 | Compact spinning negative pressure control method |
| CN108873801A (en) * | 2018-07-26 | 2018-11-23 | 南通华强布业有限公司 | A kind of compact spinning constant-pressure control device |
| CN113623250A (en) * | 2021-08-27 | 2021-11-09 | 江苏格罗瑞节能科技有限公司 | Compact spinning negative pressure integrated constant pressure fan |
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Open date: 20080903 |