CN112538660A - Automatic cooling process air regulation and control system for non-woven fabric production - Google Patents
Automatic cooling process air regulation and control system for non-woven fabric production Download PDFInfo
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- CN112538660A CN112538660A CN202011398325.1A CN202011398325A CN112538660A CN 112538660 A CN112538660 A CN 112538660A CN 202011398325 A CN202011398325 A CN 202011398325A CN 112538660 A CN112538660 A CN 112538660A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
The invention belongs to the field of chemical fiber engineering air conditioner application, and provides a process side-blowing automatic regulation and control system for spinning cooling in a non-woven fabric production process, which comprises a DCS centralized control system, an execution mechanism, a detection mechanism and an air conveying pipeline, and is characterized in that secondary constant air volume control is added to an air terminal side-blowing window on the basis of the original main pipe constant air pressure control. The method is characterized in that the function operations of deviation proportion (P), integral (I) and differential (D) are carried out by comparing the real-time detection field process physical variable value with the process parameter setting target value, so as to realize the closed-loop PID automatic regulation and control. The invention improves the control precision of the process wind and has two control modes of manual control and automatic control. The air quantity low limit and the air quantity high limit are set for alarming, and the automatic control regulation and control in the high limit and the low limit intervals of the opening of the valve can be automatically set according to the actual working conditions on site, so that the air quantity control device is accurate and reliable. And has a real-time trend curve, which is convenient for tracking inquiry and statistics. And visual and effective data are provided for optimizing control parameters.
Description
Technical Field
The invention discloses an automatic cooling process air regulating and controlling system for non-woven fabric production, and belongs to the field of chemical fiber engineering air conditioner application.
Background
The non-woven fabric adopts the regulating and controlling process wind of an engineering air conditioner in the process of cooling and drafting the nascent fiber. But only total wind pressure control can not carry out real-time accurate regulation to every position of spinning. And as the application period is prolonged, the air duct and the air window are blocked to different degrees. Although the air pressure value is constant, the air speed/air volume of the tows changes, and effective constant cannot be realized. The cooling effect of the tows is unstable and uneven, and the CV value of the quality variation coefficient of the monofilaments is increased. Directly affecting the stability and uniformity of the final product.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an automatic cooling process air regulation and control system for producing non-woven fabrics, so as to solve the problem that the air speed/air volume borne by tows cannot be effectively and constantly regulated and controlled in real time in the background technology. The invention has high control precision and reasonable design, and can monitor, regulate and control in real time.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a cooling process air automatic regulation and control system for non-woven fabric production is characterized by comprising a main pipe constant air pressure control system, a DCS centralized control system, an execution mechanism, a detection mechanism and an air conveying pipeline; the detection mechanism comprises a wind speed sensor, an air quantity sensor and an angular displacement sensor; the wind speed sensor and the wind volume sensor are arranged in the middle of the wind outlet window of each spinning position and are used for collecting wind speed/wind volume field detection data and transmitting the wind speed/wind volume field detection data to the DCS centralized control system; the angular displacement sensor is arranged at the air inlet of each spinning position and used for detecting the percentage opening of the feedback adjusting valve; the DCS centralized control system compares the on-site detection actual values of the wind speed and the wind volume collected by the detection mechanism with the process set values and makes a judgment, and sends a control signal to the execution mechanism according to the judgment result; the actuating mechanism is arranged at each spinning position air inlet and comprises a servo control actuator, a worm gear and a wind valve, the actuating mechanism is arranged at each spinning position air inlet, the opening of the wind valve is adjusted and controlled according to signals transmitted by the controller, when the detected wind speed/wind volume value is smaller than a set value, the adjustment opening is quantitatively opened to be large, otherwise, the adjustment opening is quantitatively opened to be small; and the air delivery pipeline supplies air from an air supply outlet of the air conditioner to the process air terminal side blowing window.
Further, the main pipe constant air pressure control system comprises an air conditioner fresh air pipeline, a heating and refrigerating regulation and control system, a humidifying and dehumidifying regulation and control system, a constant pressure system for controlling the variable frequency fan by means of air pressure feedback, and a constant pressure air supply pipeline.
Furthermore, process air enters from a fresh air inlet pipeline, is subjected to temperature adjustment and humidity adjustment, and is sent out at constant pressure through an air outlet pipeline under the action of a variable frequency fan.
Further, the air valve adopts an electrically controlled electric regulating valve or a pneumatic regulating valve.
Further, the number of the detection mechanisms is the same as that of the spinning positions.
Further, the number of the air valves is the same as that of the spinning positions.
Furthermore, the air valve is adjusted in a manual and automatic mode.
Further, the damper includes an operation portion including: worm wheel, worm, valve rod, valve plate; the worm wheel and the worm drive a valve rod, a valve plate is fixed on the valve rod, and the worm drives the angular displacement sensor through a chain wheel; the valve plate is arranged in the distribution air pipe at each spinning position, and the shape of the valve plate is the same as that of the distribution air pipe and is square; when the valve plate and the distribution air pipe form a 90-degree angle vertically, the opening degree is minimum; when the valve plate and the distribution pipe form an angle of 0 degrees in parallel, the opening degree is maximum.
Further, the regulating and controlling the opening degree of the air valve comprises opening degree increasing and opening degree decreasing operations; the opening increasing operation means that the servo control actuator adjusts the worm to rotate clockwise to drive the worm wheel to rotate clockwise, and then drives the valve rod valve plate to rotate clockwise from a 90-degree angle to a 0-degree angle; on the contrary, the opening of the air valve is reduced, the servo control actuator adjusts the worm to rotate anticlockwise, drives the worm wheel to rotate anticlockwise, and then drives the valve rod and the valve plate to rotate reversely from the 90-degree angle to the 0-degree angle;
furthermore, the worm gear and worm reduction ratio is designed in such a way that the worm rotates for 5 circles, and the corresponding valve rod rotates for 90 degrees (namely 1/4 circles); and the operating part is provided with a 0-position (namely, 90-degree angular position) and a full-position (namely, 0-degree angular position) mechanical limit to avoid overshoot.
Furthermore, the worm drives an angular displacement sensor through a chain wheel to detect the physical quantity of the opening of the feedback valve and realize the user setting function of the automatic control opening regulation and control interval in a program; the regulation and control interval is realized by setting the high limit and the low limit of the opening of the valve, and the set values are as follows: 0-100%; the worm rotates clockwise 0-5 circles, corresponds to 0-10 v signals fed back by angular displacement, and corresponds to a percentage opening value of 0-100%.
Furthermore, the DCS collects the detection values of the field physical quantity in real time and presents the detection values in the form of a trend graph, and the DCS has a maximum value, a minimum value, an average value and a CV value of statistical operation; and archiving and calling historical data.
Advantageous effects
The invention provides a process cross air blow automatic regulation and control system for spinning cooling in a non-woven fabric production process. On the basis of the original main pipe constant air pressure control, the constant air volume control of a secondary terminal side air blowing window is added; the method comprises the following steps: each spinning position is provided with a wind speed/wind volume sensor, a valve opening angular displacement sensor and a servo control actuator to control the opening of a side blowing valve and intelligently and centrally control the DCS, and the function operation of deviation proportion (P), integral (I) and differential (D) is carried out by detecting the value of a field process physical variable in real time and comparing the value with a process parameter set target value, so that the closed-loop PID automatic regulation and control is realized. The invention improves the control precision of the process wind and has two control modes of manual control and automatic control. The valve is provided with a low limit and a high limit of the valve opening, and the automatic regulation and control in a limited interval are accurate and reliable. And has a real-time trend curve, which is convenient for tracking inquiry and statistics. And visual and effective data are provided for optimizing control parameters. Effectively solve the shortcoming that single total wind pressure control can not accurately adjust single position of spinning in real time among the prior art. And simultaneously, the problem that the air speed/air volume of tows changes and is not effectively constant although the air pressure value is constant when the air channel and the air window are blocked along with the prolonging of the application period is solved. The stability of the cooling condition of the tows can be uniformly and effectively controlled, and the CV value of the quality variation coefficient of the monofilaments can be effectively controlled. Finally, the stability and the uniformity of the finished product are effectively controlled.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading the detailed description of the non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of an automatic air control system for a cooling process in a non-woven fabric production process according to the present invention;
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, the present invention provides a technical solution:
a cooling process air automatic regulation and control system for non-woven fabric production is characterized by comprising a main pipe constant air pressure control system, a DCS centralized control system, an execution mechanism, a detection mechanism and an air conveying pipeline; the detection mechanism comprises a wind speed sensor, an air quantity sensor and an angular displacement sensor; the wind speed sensor and the wind volume sensor are arranged in the middle of the wind outlet window of each spinning position and are used for acquiring wind speed and wind volume field detection data and transmitting the data to the DCS centralized control system; the angular displacement sensor is arranged at an air inlet of each spinning position, is connected with the worm gear and the worm and is used for detecting the percentage opening of the feedback adjusting valve; the DCS centralized control system compares the on-site detection actual values of the wind speed and the wind volume collected by the detection mechanism with the process set values and makes a judgment, and sends a control signal to the execution mechanism according to the judgment result; the actuating mechanism is arranged at each spinning position air inlet and comprises a servo control actuator and an air valve, the opening of the air valve is adjusted and controlled according to signals transmitted by the controller, when the detected air speed/air volume value is smaller than a set value, the quantitative opening of the adjusting and controlling opening is increased, otherwise, the quantitative opening of the adjusting and controlling opening is decreased; and the air delivery pipeline supplies air from an air supply outlet of the air conditioner to the process air terminal side blowing window.
The main pipe constant air pressure control base comprises an air conditioner fresh air pipeline, a heating and refrigerating regulation and control system, a humidifying and dehumidifying regulation and control system, a constant pressure system of a main pipe air pressure feedback control variable frequency fan and a constant pressure air supply pipeline. The method only relates to a constant-air pressure air supply pipeline part, and the constant air quantity control of a secondary terminal side air blowing window is added;
the process air enters from a fresh air inlet pipeline, is subjected to temperature adjustment and humidity adjustment and then is sent out to a use terminal at constant pressure through an air outlet pipeline under the action of a variable frequency fan. The air valve adopts an electrically controlled electric regulating valve or a pneumatic regulating valve. The number of the detection mechanisms is the same as that of the spinning positions. The number of the air valves is the same as that of the spinning positions. The air valve is adjusted in a manual or automatic mode.
The damper includes an operating portion including: worm and gear, valve stem, valve plate, angular displacement sensor; the worm gear structure drives a valve rod, a valve plate is fixed on the valve rod, and the worm drives the angular displacement sensor through a chain wheel; the valve plate is arranged in the distribution air pipe at each spinning position, and the valve plate and the distribution air pipe are in the same shape and are both square. When the valve plate and the distribution air pipe form a 90-degree angle vertically, the opening degree is minimum; when the valve plate and the distribution pipe form an angle of 0 degrees in parallel, the opening degree is maximum.
The operation includes an opening degree increasing and an opening degree decreasing operation; the opening increasing operation means that the servo control actuator adjusts the worm to rotate clockwise to drive the worm wheel to rotate clockwise, and then drives the valve rod valve plate to rotate clockwise from a 90-degree angle to a 0-degree angle; on the contrary, the opening of the air valve is reduced, the servo control actuator adjusts the worm to rotate anticlockwise, drives the worm wheel to rotate anticlockwise, and then drives the valve rod and the valve plate to rotate reversely from the 90-degree angle to the 0-degree angle;
the reduction ratio of the worm gear and the worm is designed in such a way that the worm rotates for 5 circles and rotates for 90 degrees (namely 1/4 circles) corresponding to the valve rod; and the operating part is provided with a 0-position (namely, 90-degree angular position) and a full-position (namely, 0-degree angular position) mechanical limit to avoid overshoot.
The worm drives an angular displacement sensor through a chain wheel to detect the physical quantity of the opening of the feedback valve and realize the user setting function of the automatic control opening regulation and control interval in a program; the regulation and control interval is realized by setting the high limit and the low limit of the opening of the valve, and the set values are as follows: 0-100%; the worm rotates clockwise 0-5 circles, corresponds to 0-10 v signals fed back by angular displacement, and corresponds to a percentage opening value of 0-100%.
The DCS centralized control system can acquire the detection values of the field physical quantities in real time and present the detection values in the form of a trend graph, and has the maximum value, the minimum value, the average value and the CV value of statistical operation. And the archiving and the calling of historical data are realized.
A cooling process air automatic regulation and control system for non-woven fabric production comprises: (1) the middle position of each spinning position air outlet window is provided with a wind speed/air quantity sensor, the required range is properly selected, the precision is 0.01m/s, and the deviation of the installation direction position in the vertical direction and the horizontal direction is less than or equal to 5 mm; the installation mode is convenient, and normal spinning and operation are not hindered. (2) And each spinning position air inlet is provided with a matched servo control actuator for regulating and controlling the opening of the side blowing valve, the opening of the stepless regulating and controlling air valve is calculated according to a set value and a detected value, when the detected air speed/air volume value is smaller than the set value, the regulating and controlling opening is quantitatively opened to be larger, otherwise, the regulating and controlling opening is quantitatively opened to be smaller. (3) An angular displacement sensor is arranged at each spinning position air inlet, the opening position of the feedback side blow valve is detected, the percentage opening of the air valve is calculated according to the detection value, the air valve participates in comparison operation quantitative control, and meanwhile, real-time accurate numerical values are displayed and historical data are stored; (4) the intelligent centralized control DCS performs function operation of deviation proportion (P), integral (I) and differential (D) by comparing a real-time detection field process physical variable value with a process parameter set target value, and realizes closed-loop PID automatic regulation and control.
A cooling process air automatic regulation and control system for non-woven fabric production comprises: each spinning position is provided with a wind speed/wind volume sensor, an angular displacement sensor, a servo control actuator and an intelligent centralized control DCS, and the function operation of deviation proportion (P), integral (I) and differential (D) is carried out by comparing a real-time detection field process physical variable value with a process parameter set target value, so that the closed-loop PID automatic regulation and control is realized. The invention improves the control precision of the process wind and has two control modes of manual control and automatic control. The air quantity low limit and the air quantity high limit are set for alarming, and the automatic control regulation and control in the high limit and the low limit intervals of the opening of the self-setting valve according to the actual working conditions on site are realized, so that the air quantity low limit and the air quantity high limit alarm are accurate and reliable. And has a real-time trend curve, which is convenient for tracking inquiry and statistics.
The invention improves the control precision of cold air for the process, and (a) is provided with a manual control mode and an automatic control mode. (b) The valve opening is provided with a low limit and a high limit, the high limit value must be larger than the low limit value, the regulation and control are carried out in a limited interval of 0-100%, and the valve opening is accurate and reliable. (c) The wind speed/wind volume is provided with high and low limit alarm, and has a real-time trend curve, so that tracking, query and statistics are facilitated. And visual and effective data are provided for optimizing control parameters. The wind speed borne by the tows can be effectively kept constant (a calibrated value is +/-0.01 m/s). The filament bundle is cooled stably and uniformly, and the coefficient of variation CV value of the quality of the monofilament is within 1.5 percent. And guarantee is provided for the stable uniformity of the final finished product.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A cooling process air automatic regulation and control system for non-woven fabric production is characterized by comprising a main pipe constant air pressure control system, a DCS centralized control system, an execution mechanism, a detection mechanism and an air conveying pipeline; the detection mechanism comprises a wind speed sensor, an air quantity sensor and an angular displacement sensor; the wind speed sensor and the wind volume sensor are arranged in the middle of the wind outlet window of each spinning position and are used for acquiring wind speed and wind volume field detection data and transmitting the wind speed and wind volume field detection data to the DCS centralized control system; the angular displacement sensor is arranged at the air inlet of each spinning position and used for detecting the percentage opening of the feedback adjusting valve; the DCS centralized control system compares the on-site detection actual values of the wind speed and the wind volume collected by the detection mechanism with the process set values and makes a judgment, and sends a control signal to the execution mechanism according to the judgment result; the actuating mechanism is arranged at each spinning position air inlet and comprises a servo control actuator and an air valve, the opening of the air valve is adjusted and controlled according to signals transmitted by the controller, when the detected air speed/air volume value is smaller than a set value, the quantitative opening of the adjusting and controlling opening is increased, otherwise, the quantitative opening of the adjusting and controlling opening is decreased; and the air delivery pipeline supplies air from an air supply outlet of the air conditioner to the process air terminal side blowing window.
2. The cooling process air automatic regulation and control system for non-woven fabric production of claim 1, wherein the main pipe constant air pressure control system comprises an air conditioning fresh air pipeline, a heating and refrigerating regulation and control system, a humidifying and dehumidifying regulation and control system, a constant pressure system of a main pipe air pressure feedback control variable frequency fan, and a constant pressure air supply pipeline.
3. The system for automatically regulating and controlling the cooling process air for producing the non-woven fabric as claimed in claim 2, wherein the process air enters from a fresh air inlet pipeline, is subjected to temperature regulation and humidity regulation, and is then conveyed to a use terminal under constant pressure through an air supply pipeline under the action of a variable frequency fan.
4. The cooling process air automatic regulating and controlling system for the non-woven fabric production as claimed in claim 1, wherein the air valve is an electrically controlled electric regulating valve or a pneumatic regulating valve.
5. The cooling process air automatic regulating and controlling system for non-woven fabric production as claimed in claim 1, wherein the number of the detection mechanism and the number of the spinning positions are the same.
6. The cooling process air automatic regulating and controlling system for the non-woven fabric production as claimed in claim 1, wherein the air valve comprises an operating part, the operating part comprises a worm wheel, a worm, a valve rod and a valve plate; the worm wheel and the worm drive a valve rod, a valve plate is fixed on the valve rod, and the worm drives the angular displacement sensor through a chain wheel; the valve plate is arranged in the distribution air pipe at each spinning position, and the shape of the valve plate is the same as that of the distribution air pipe and is square; when the valve plate and the distribution air pipe form a 90-degree angle vertically, the opening degree is minimum; when the valve plate and the distribution pipe form an angle of 0 degrees in parallel, the opening degree is maximum.
7. The cooling process air automatic regulating system for non-woven fabric production according to claim 6, wherein the regulating air valve opening degree comprises opening degree increasing and opening degree decreasing operations; the opening increasing operation means that the servo control actuator adjusts the worm to rotate clockwise to drive the worm wheel to rotate clockwise, and then drives the valve rod valve plate to rotate clockwise from a 90-degree angle to a 0-degree angle; on the contrary, the air valve opening reduction operation means that the servo control actuator adjusts the worm to rotate anticlockwise, drives the worm wheel to rotate anticlockwise, and then drives the valve rod valve plate to rotate reversely from the 90-degree angle to the 0-degree angle.
8. The cooling process air automatic regulation and control system for non-woven fabric production of claim 6, characterized in that the reduction ratio of the worm gear and the worm is designed in such a way that the worm rotates for 5 circles and rotates for 90 degrees corresponding to the valve rod.
9. The cooling process air automatic regulation and control system for non-woven fabric production according to claim 6, characterized in that the worm drives an angular displacement sensor through a chain wheel to detect the physical quantity of the opening of the feedback valve and realize the user setting function of the automatic opening regulation and control interval in the program; the regulation and control interval is realized by setting the high limit and the low limit of the opening of the valve, and the set values are as follows: 0-100%; the worm rotates clockwise 0-5 circles, corresponds to 0-10 v signals fed back by angular displacement, and corresponds to a percentage opening value of 0-100%.
10. The cooling process air automatic regulation and control system for the non-woven fabric production according to claim 1, characterized in that the DCS centralized control system collects the detection values of the on-site physical quantity in real time and presents the detection values in the form of a trend graph, and has statistical operation maximum values, minimum values, average values and CV values; and archiving and calling historical data.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116476356A (en) * | 2023-06-20 | 2023-07-25 | 石狮佳南热熔胶有限公司 | Prevent fold hot melt adhesive film and cooling device for hot melt adhesive film production |
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| CN116476356A (en) * | 2023-06-20 | 2023-07-25 | 石狮佳南热熔胶有限公司 | Prevent fold hot melt adhesive film and cooling device for hot melt adhesive film production |
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