EP3633086B1 - Flockenförderung in einem faseraufbereitungssystem - Google Patents

Flockenförderung in einem faseraufbereitungssystem Download PDF

Info

Publication number
EP3633086B1
EP3633086B1 EP19197829.5A EP19197829A EP3633086B1 EP 3633086 B1 EP3633086 B1 EP 3633086B1 EP 19197829 A EP19197829 A EP 19197829A EP 3633086 B1 EP3633086 B1 EP 3633086B1
Authority
EP
European Patent Office
Prior art keywords
air
conveyor section
conveyor
exhaust
air extraction
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.)
Active
Application number
EP19197829.5A
Other languages
English (en)
French (fr)
Other versions
EP3633086A1 (de
Inventor
Tobias WOLFER
Reto LÜTHARD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3633086A1 publication Critical patent/EP3633086A1/de
Application granted granted Critical
Publication of EP3633086B1 publication Critical patent/EP3633086B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/08—Air draught or like pneumatic arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G21/00—Combinations of machines, apparatus, or processes, e.g. for continuous processing

Definitions

  • the invention relates to a pneumatic flock conveyance, to an air extraction system in a fiber preparation system, and to a method for controlling a volume flow and pressure distribution in a fiber preparation system.
  • the fiber preparation system consists of a succession of machines and conveyor sections that are arranged between the machines for pneumatic flock conveyance and an air extraction system for extracting exhaust air from the conveyor sections.
  • Fiber processing machines such as bale openers, cleaners, separators, intermediate storage vessels (so-called “condensers”), mixers, or carding machines are used in fiber preparation and are used for cleaning, mixing, and dissolving the fiber material into individual fibers and parallelizing them.
  • a first type of machine includes condensers or intermediate storage vessels, for example, in which the fiber flocks are not treated but separated from the transport air, whereby as much of the transport air that is introduced into the machine as possible must be discharged as exhaust air.
  • Examples of a second type of machine include the cleaners in which the fibers are treated and a discharge of the transport air is only necessary in some cases, but constant pressure in the transport air flow through the machine is important for proper operation.
  • a constant volume flow corresponding to a given flow rate is crucial for trouble-free operation.
  • the fibers to be prepared for spinning undergo several stages of processing.
  • a first stage the fibers are dissolved out of fiber bales in the form of fiber flocks.
  • So-called bale openers are usually used for this.
  • pneumatic flock conveyance these fiber flocks are brought out of the bale opener and delivered to a downstream cleaning machine, for example.
  • a condenser can be provided as an intermediate storage vessel.
  • the pneumatic flock conveyor conveys the fiber flocks in a first conveyor section from the bale opener to the condenser, which will be referred to in the following as the first condenser.
  • the fiber flocks are separated from the transport air and fed to a storage vessel.
  • the transport air is discharged as exhaust air via an air extraction system.
  • the fiber flocks are supplied to the cleaner by means of a fan in a second conveyor section.
  • the first condenser is not used, and the fiber flocks from the bale opener are fed directly into the cleaner. As a result, the first conveyor section is not present.
  • a constant pressure in the fiber flock stream is achieved in the cleaner by discharging a portion of the transport air from the cleaner.
  • the cleaned fiber flocks are fed pneumatically from the cleaner to a mixer with the aid of an additional fan.
  • the fiber flocks are separated from the transport air and stored in various mixing chambers. The separated transport air is discharged from the mixer.
  • the mixed fiber flocks are transported by means of a fan from the mixer to an intermediate storage vessel.
  • the temporary storage vessel serves as a compensating vessel upstream from a further conveyor section, which feeds the fiber flocks to one or more carding machines and is referred to in the following as a card condenser.
  • the fiber flocks are separated from the transport air and fed to a storage vessel.
  • the transport air from the card condenser as well as from the conveyor section for supplying the cards is discharged as exhaust air.
  • the cards which break the fiber flocks down into individual fibers and form a card sliver, represent the conclusion of the fiber preparation system.
  • the fibers are passed on in the form of card slivers for spinning preparation.
  • spinning preparation the card slivers are processed by stretching, combers, or flyers for use in final spinning processes.
  • the individual conveyor sections are usually operated independently of one another, thereby enabling an optimal configuration of the volume/pressure ratios to the machines adjacent to a conveyor section.
  • the arrangement of the individual machines in a fiber preparation system can be set up in different manners; this depends inter alia on the raw material to be processed and the product to be obtained. For example, coarse cleaners and fine cleaners can be used as cleaning machines, or additional temporary storage vessels can also be used.
  • a transport path from a delivering machine to a receiving machine is referred to as a conveyor section, with the receiving machine being associated with the corresponding conveyor section in each case.
  • a conveyor section always contains a conveying air supply (usually a fan) for generating a necessary conveying air flow. However, it is not necessary to arrange a fan for generating the conveying air flow between each successive pair of machines.
  • Simple machines such as metal separators, foreign material and foreign fiber detection systems, or simple cleaners that do interrupt the transport line in terms of its shape but do not prevent the actual flow, can be integrated into a conveyor section. In that case, the conveying air flow runs continuously through these devices.
  • the conveying air flow can be guided by the fan, whereby the fiber flocks are also guided by the fan.
  • a filter chamber by means of which the conveying air flow is separated from the fiber flocks can also be arranged upstream from the fan. Even if the fan is not part of the transport line, the fan is nevertheless associated with a conveyor section, and the conveying air flow for this particular conveyor section is determined by the fan.
  • the volume flow generated - i.e., the conveying air flow - is linked to the prevailing pressure in the transport line or in the conveyor section.
  • the volume flow in the conveyor section decreases as the pressure increases.
  • the pressure is dependent on the flow rate or the amount of fiber flocks present in the conveyor section, the line routing, the machines that are integrated into the conveyor section, the pair of machines delivering and receiving the fiber flocks, and the air discharge from the corresponding conveyor section.
  • the requirements of the individual machines for smooth functioning as well as the need for a certain level of transport performance must be met.
  • CH 696 909 A5 has the object of providing a largely constant volume flow for conveying the fiber flocks despite different fill pressures when feeding a plurality of cards.
  • CH 696 909 A5 discloses a method in which a family of characteristics of the fan is stored mathematically in the control system, and the associated volume flow at a certain fan speed is calculated from this family of characteristics by means of a pressure difference measurement via the fan.
  • DE 10 2015 106 415 A1 discloses system for controlling of the quantity of fiber flocks that are delivered into an air volume flow by a feeding device.
  • Document US 3 111 718 A discloses a method for conveying flocks as well as a fibre preparation system with a succession of machines and conveyor sections that are respectively arranged between the machines, and with a fan connected with a suction line to at least one of the conveyor sections.
  • Each of the fiber-processing machines of a fiber preparation system has an optimum operating point at a certain pressure.
  • the pressure to be set may also depend on the operating point or on a current production quantity. For example, in order to achieve a constant flock weight in a storage vessel when it is nearly empty, the pressure acting on the flock column in the accumulator is different compared to an almost full storage vessel. This is due to the fact that a height of the flock column also brings about a compression of the fiber flocks as a result of the self-weight of the fiber flocks and thus a change in the weight of the flock at a lower end of the storage vessel.
  • Fiber preparation systems are generally also outfitted with a central air extraction system, a so-called "filter house,” which provides a certain suction power.
  • the power of a filter house is usually set too high in order to be prepared for the highest demand of a single machine, which also results in a high energy demand.
  • Open handovers result in the system being supplied with false air, with the amount of false air compensating for the excess suction power.
  • ambient air is moved around in the air extraction system that does not make any contribution to the actual operation, but only compensates for an inadequate system architecture.
  • a novel fiber preparation system which comprises a succession of machines and conveyor sections that are arranged between the machines for pneumatic flock conveyance, as well as an air extraction system for extracting exhaust air from the conveyor sections offered.
  • the air extraction system has an induced draft fan that is connected by means of a suction line to at least one of the conveyor sections via air extraction ducts emanating from the suction line and associated with the respective conveyor section.
  • the air extraction ducts that are not connected to the suction line are brought together in a collecting line.
  • an associated conveying fan is provided in the pneumatic flock conveyor in the respective conveyor sections
  • a volume flow measuring means associated with the conveyor sections is provided in the pneumatic flock conveyor in the respective conveyor section
  • a constant volume flow is ensured by the volume flow measuring means and corresponding regulation of the conveying fan in the respective conveyor section
  • an exhaust control element is provided in at least one air extraction duct.
  • the induced draft fan increases the pressure in the air extraction system opposite the filter house. This allows the filter house to be regulated to a lower negative pressure.
  • the machines of the fiber preparation system that do not have an elevated pressure requirement are connected via a collecting line directly to the filter house. However, machines that have an elevated pressure requirement are supplied via the suction line of the induced draft fan, with the pressure line of the induced draft fan also leading into the filter house.
  • an associated conveying fan is provided in the pneumatic flock conveyor in the respective conveyor sections.
  • a delivery volume flow in each individual conveyor section can be determined and regulated independently. If a first condenser is used after the bale opener, the induced draft fan can be provided in this first conveyor section for the function of the conveying fan. This enables conveying fan for the first conveyor section to be saved.
  • an associated volume flow measuring means is provided in the pneumatic flock conveyor in the respective conveyor sections. A corresponding volume flow measuring means can thus be provided for each conveyor section. Individual control of the flock conveyance in the individual conveyor sections is thus made possible. It is therefore also possible for different conveyed quantities to be transported in the individual conveyor sections, which contributes to an optimization of the operation of the entire fiber preparation system.
  • a constant volume flow is ensured by the volume flow measuring means and corresponding regulation of the fan in the respective conveyor section.
  • the conveying airflow is specified based on the need at the machines adjoining a conveyor section or those which are integrated into a conveyor section. Decisive factors are the production rate at which the conveyor section is operated on the one hand and the conveying air flow required for this production rate on the other hand.
  • Machines such as metal separators or gravity separators that are integrated into a conveyor section usually have an ideal operating point at a specific production rate for a specific speed of the conveying air flow. The machines are adjusted to a certain volume flow of the conveying air flow so that the speed of the conveying air flow corresponds to the ideal operating point.
  • an exhaust control element is provided in at least one air extraction duct.
  • Control valves, adjustable apertures, control flaps, or slides can be used as exhaust control elements, for example.
  • the exhaust control element can be manually adjustable or automatically adjustable by means of a corresponding servo controller.
  • An exhaust control element in the air extraction duct makes it possible to have a constant pressure within the machine from which the exhaust air is originating or to control a constant volume flow of the exhaust air.
  • the exhaust control element is a control flap.
  • a fan can also be used as an exhaust control element.
  • an exhaust-air measuring element is advantageously provided in at least one air extraction duct.
  • the exhaust-air measuring element can be a volume flow measuring means or a pressure gauge.
  • the volume flow with which the fiber flocks are passed through the cleaner as well as the prevailing pressure in the cleaner inlet are both crucial for the proper operation of a cleaner. Both factors can be maintained within limit values specified for a product by regulating the exhaust air flow that is discharged from the cleaner.
  • all air extraction ducts of the system are provided with an exhaust-air measuring element and an exhaust control element.
  • all exhaust air flows can be regulated according to the requirements of the individual machines.
  • the regulation of an exhaust air flow that is not coupled with the suction line of the induced draft fan also brings advantages in terms of fiber processing, particularly through the use of the minimum required energy.
  • a pressure gauge is provided upstream from the induced draft fan in the suction line.
  • the total pressure that is measured upstream from the induced draft fan is determined by the exhaust air volume flows of the individual conveyor sections that are integrated into the suction line. These individual exhaust air volume flows as well as the required pressures are known for a specific production from the settings of the fiber preparation system.
  • the total volume flow or the total pressure can thus be calculated from the individual exhaust air flows of the integrated conveyor sections and specified as a target value, whereby the induced draft can be regulated to this target value based on the upstream measurement.
  • each conveyor section Since the exhaust air conducted away by the induced draft fan must also be supplied in advance to the overall conveyor system and/or to the individual conveyor sections, an air supply is advantageously provided at the beginning of each conveyor section.
  • a controlled regulation of the volume flow can be achieved in a conveyor section by means of the corresponding conveying fan on the basis of the associated volume flow measuring means.
  • the individual conveyor sections can be decoupled from one another. The conveying air of a conveyor section is discharged from the conveyor section through the air extraction duct, and the subsequent conveyor section is operated via the false air inlet at a certain volume flow without the need for an undefined amount of conveying air to be taken over from the preceding conveyor section.
  • the first conveyor section is delimited by a bale opener and a first condenser
  • the last conveyor section is delimited by at least one carding machine
  • the conveyor sections therebetween are delimited by cleaning machines, mixers, or storage machines, with the respective interposed conveyor section enclosing the machine that is arranged downstream in a direction of conveyance, and with at least the air extraction ducts of cleaning machines and condensers each having an exhaust control element and an exhaust-air measuring element.
  • Also proposed is a method for regulating a volume flow distribution and pressure distribution in a pneumatic flock conveyor in a fiber preparation system the fiber preparation system consisting of a succession of machines and conveyor sections that are arranged between the machines and an air extraction system for extracting exhaust air from the conveyor sections.
  • the exhaust air from at least one conveyor section in an air extraction duct associated with the conveyor section is conducted out of the conveyor section and the air extraction duct is converted into a suction line and removed by an induced draft fan, and the air extraction ducts that are not connected to the suction line are combined into a collecting line.
  • At least one volume flow in the flock conveyor in the respective conveyor section is maintained at a constant value by means of a conveying fan that is associated with this conveyor section and an associated volume flow measuring means with a control system.
  • a regulation of the exhaust control element of the first condenser is preferably controlled on the basis of a volume flow measuring means.
  • the volume flow that is required in order to transport the fiber flocks from the bale opener to the condenser must not be less than a minimum amount of air in order to avoid blockages in the lines or in the bale opener itself.
  • the measurement signal of the volume flow measuring means in the first conveyor section is switched to the control system of the exhaust air of the condenser.
  • a pressure is measured in the air extraction ducts of individual conveyor sections using an exhaust-air measuring element, and the pressure in the machine that is associated with the respective conveyor section is regulated by an exhaust-air measuring element to a constant target value.
  • the exhaust air of the last conveyor section is guided through an air extraction duct into a collecting line, but the exhaust air is not conducted through the collecting line via the induced draft fan.
  • the last conveyor section comprises the distribution of flocks onto the cards. Only the transport air is to be separated off here, which is possible by virtue of a relatively low negative pressure.
  • the supply through the filter house is generally sufficient for this purpose, so that an increase in pressure by means of the induced draft fan can be omitted, and energy can be saved as well.
  • Fig. 1 shows a schematic representation of a fiber preparation system with a succession of fiber processing machines in a first embodiment.
  • the cleaned exhaust air 54 is discharged from the filter house 7 into the environment or otherwise used in the spinning mill.
  • the filter house has at least one first suction port 8 and one second suction port 9. Exhaust air is drawn in at a constant pressure via both suction ports 8 and 9.
  • the air extraction system comprises an induced draft fan 12, which is connected to the second suction port 9 on the filter house 7 via a pressure line 11, and a collecting line 10, which is connected to the first suction port 8.
  • Air extraction ducts emanating from individual machines - in the exemplary embodiment that is illustrated, the air extraction duct 41 emanating from a mixer 4 and the air extraction duct 48 emanating from carding machines 6 - are connected to the collecting line 10.
  • first conveyor section 14 fiber flocks that are extracted from fiber bales by a bale opener 1 are conveyed via a pneumatic conveyor to an intermediate storage vessel, a so-called "first condenser" 2.
  • a volume flow measuring means 19 is provided for the first conveyor section 14 in the pneumatic conveyor.
  • the fiber flocks are separated from the transport air, and the separated transport air is discharged from the first condenser 2 via an air extraction duct 34.
  • the air extraction duct 34 of the condenser 2 is guided via an exhaust control element 35 into a suction line 13 of the 2. induced draft fan 12.
  • the pneumatic conveyance of the fiber flocks in the first conveyor section 14 from the bale opener 1 to the first condenser 2 is thus driven by the suction power of the induced draft fan 12.
  • the volume flow in the first conveyor section 14 is maintained constant, or adapted to the requirements, by a control system 36.
  • the exhaust control element 35 in the air extraction duct 34 is directly influenced by the control system 36 on the basis of the volume flow measuring means 19 in the first conveyor section 14.
  • the fiber flocks are fed pneumatically from the condenser 2 to a cleaner 3.
  • the conveying fan 21 is provided for the pneumatic conveyance; likewise, a volume flow measuring means 20 is arranged in the second conveyor section 15 upstream from the conveying fan 21, and the volume flow is maintained at a constant value that corresponds to the production specifications by means of a control system 23.
  • the required transport air is sucked in by the conveying fan 21 via an air supply 22 that is arranged at the beginning of the second conveyor section 15. Since a constant volume flow and a certain pressure are required for proper operation of the cleaner 3, the corresponding conditions are ensured by an air extraction duct 37.
  • An exhaust-air measuring element 39 - a pressure sensor, for example - and an exhaust control element 38 - a control valve, for example - are provided in the air extraction duct 37, with a control system 40 acting on the exhaust control element 38 according to the actual values from the exhaust-air measuring element 39 in order to enable the corresponding pressure/volume ratios in the cleaner 3 to be maintained at a predetermined target value.
  • the air extraction duct 37 of the cleaner 3 is connected to the suction line 13 of the induced draft fan 12.
  • a subsequent third conveyor section 16 the fiber flocks leaving the cleaner 3 are pneumatically fed to a mixer 4.
  • a conveying fan 25 that is connected via a control system 27 to a volume flow measuring means 24 for the pneumatic conveyance.
  • the required transport air is sucked in by the conveying fan 3 partially through the cleaner 3 and supplemented by an air supply 26 that is arranged at the beginning of the third conveyor section 16.
  • an air extraction duct 41 for connecting the third conveyor section 16, more particularly the mixer 4, with the collecting line 10 to the filter house 7 is provided in order to separate the fiber flocks from the transport air in the mixer 4.
  • fourth conveyor section 17 the fiber flocks leaving the mixer 4 are pneumatically fed to a card condenser 5.
  • a conveying fan 31 that is arranged downstream from the card condenser 5 and has the fourth conveyor section 17 in common with the subsequent conveyor section 18 is provided for the pneumatic conveyance.
  • the volume of exhaust air leaving the card condenser 5 is controlled by means of a control system 47 that is connected to a volume flow measuring means 28 and an exhaust control element 46.
  • the required transport air is sucked in via an air supply 29 at the beginning of the fourth conveyor section 17.
  • an air extraction duct 45 for connecting the fourth conveyor section 17, more particularly the mixer 5, with the suction line 13 to the induced draft fan 12 is provided in order to separate the fiber flocks from the transport air in the card condenser 5.
  • a fifth conveyor section 18 the fiber flocks are fed pneumatically from the card condenser 5 to one or more carding machines 6 via a line system.
  • the fiber flocks are separated from the transport air, and the transport air is conducted as exhaust air to the collecting line 10 via an air extraction duct 48.
  • a conveying fan 31 that is connected via a control system 33 to a volume flow measuring means 30 for the pneumatic conveyance. The required transport air is sucked in by the conveying fan 31 via an air supply 32 at the beginning of the fifth conveyor section 18.
  • Fig. 2 shows a schematic representation of a fiber preparation system with a succession of fiber processing machines in a second embodiment.
  • the exhaust control element 35 is shown as a fan, unlike in the illustration of Fig. 1 .
  • the fan performs the same functions as the exhaust control element 35 that is depicted as a flap or valve.
  • an exhaust control element 42 and an exhaust-air measuring element 43 are additionally provided in the air extraction duct 41 of the third conveyor section 16.
  • the exhaust air discharged from the mixer 4 is maintained constant by a control system 44 at a predetermined value.
  • the exhaust-air measuring element 43 takes a pressure measurement, whereby constant pressure conditions can be created in the mixer 4.
  • Fig. 2 also shows a pressure regulator in the air extraction duct 48 in the conveyor section 18.
  • an exhaust-air measuring element 50 in the form of a pressure gauge and an exhaust control element 49 are provided.
  • the control system 51 uniform pressure distributions are created in the air extraction duct 48 and thus in the flock supply to the carding machines.
  • a pressure gauge 52 is provided in the suction line 13 to the induced draft fan 12 upstream from the induced draft fan 12.
  • the resulting exhaust air flows from the individual conveyor sections 14, 15 and 17 that are connected to the suction line 13 are known based on the specifications for the production of the fiber preparation system and the product to be processed and are extrapolated to a total exhaust volume and the necessary pressure by a control system.
  • a control system 53 of the induced draft fan 12 that is connected to the pressure gauge 52, the induced draft fan is regulated to the calculated target value for the total exhaust airflow.
  • Fig. 3 shows a schematic representation of a fiber preparation system with a succession of fiber processing machines in a third embodiment.
  • the third embodiment is an abbreviated fiber preparation system.
  • the cleaned exhaust air 54 is discharged from the filter house 7 into the environment or otherwise used in the spinning mill.
  • the filter house has at least one first suction port 8 and one second suction port 9. Exhaust air is drawn in at a constant pressure via both suction ports 8 and 9.
  • the air extraction system comprises an induced draft fan 12, which is connected to the second suction port 9 on the filter house 7 via a pressure line 11, and a collecting line 10, which is connected to the first suction port 8.
  • Air extraction ducts emanating from individual machines - in the exemplary embodiment that is illustrated, the air extraction duct 41 emanating from a mixer 4 and the air extraction duct 48 emanating from carding machines 6 - are connected to the collecting line 10.
  • a first conveyor section 15 at the beginning of fiber preparation fiber flocks that are extracted from fiber bales by a bale opener 1 are conveyed via a pneumatic conveyor to a cleaner 3.
  • a volume flow measuring means 20 is provided for the conveyor section 15 in the pneumatic conveyor.
  • the volume flow is maintained by means of a control system 23 at a constant value that corresponds to the production specifications.
  • the required transport air is sucked in by the conveying fan 21 via the bale opener 1. Since a constant volume flow and a certain pressure are required for proper operation of the cleaner 3, the corresponding conditions are ensured by an air extraction duct 37.
  • An exhaust-air measuring element 39 such as a pressure sensor, for example, is arranged in the air extraction line 37.
  • the air extraction duct 37 of the cleaner 3 is connected to the suction line 13 of the induced draft fan 12. Since only one cleaner 3 is provided in the illustrated embodiment, no further air extraction ducts are connected to the suction line 13 of the induced draft fan 12. An additional exhaust control element in the air extraction 37 is also dispensed with, since its function is taken over by the induced draft fan 12.
  • the fiber flocks leaving the cleaner 3 are pneumatically fed to a mixer 4.
  • a conveying fan 25 that is connected via a control system 27 to a volume flow measuring means 24 for the pneumatic conveyance.
  • the required transport air is sucked in by the conveying fan 3 partially through the cleaner 3 and supplemented by an air supply 26 that is arranged at the beginning of the third conveyor section 16.
  • an air extraction duct 41 for connecting the third conveyor section 16, more particularly the mixer 4, with the collecting line 10 to the filter house 7 is provided in order to separate the fiber flocks from the transport air in the mixer 4.
  • an exhaust control element 42 and an exhaust-air measuring element 43 are additionally provided in the air extraction duct 41 of the third conveyor section 16.
  • the exhaust air discharged from the mixer 4 is maintained constant by a control system 44 at a predetermined value.
  • the exhaust-air measuring element 43 takes a pressure measurement, whereby constant pressure conditions can be created in the mixer 4.
  • the fiber flocks leaving the mixer 4 are pneumatically fed to one or more carding machines 6.
  • the fiber flocks are separated from the transport air, and the transport air is conducted as exhaust air to the collecting line 10 via an air extraction duct 48.
  • a conveying fan 31 that is connected via a control system 33 to a volume flow measuring means 30 for the pneumatic conveyance. The required transport air is sucked in by the conveying fan 31 via an air supply 29 at the beginning of the conveyor section 18.
  • a pressure regulator is also provided in the air extraction duct 48 in the conveyor section 18.
  • an exhaust-air measuring element 50 in the form of a pressure gauge and an exhaust control element 49 are provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (9)

  1. Faservorbereitung mit einer Abfolge von Maschinen (1 - 6) und jeweils zwischen den Maschinen (1 - 6) angeordneten Förderabschnitten (14 - 18) zur pneumatischen Flockenförderung und mit einem Abluftsystem zur Absaugung von Abluft aus den Förderabschnitten (14 - 18), dadurch gekennzeichnet, dass das Abluftsystem einen Saugzug (12) aufweist, welcher mit einer Saugleitung (13) mit zumindest einem der Förderabschnitte (14 - 18) über von der Saugleitung (13) ausgehende und dem jeweiligen Förderabschnitt (14 - 18) zugeteilte Abluftleitungen (34, 37, 45) verbunden ist und dass die Abluftleitungen (41, 48) welche nicht mit der Saugleitung (13) verbunden sind in einer Sammelleitung (10) zusammengeführt sind, und in der pneumatischen Flockenförderung in den jeweiligen Förderabschnitten (14 - 18) ein zugehöriger Förderventilator (21, 25, 31) vorgesehen ist, und eine dem Förderabschnitten (14 - 18) zugehörige Volumenstrommessung (19, 20, 24, 28, 30) vorgesehen ist, und durch die Volumenstrommessung (20, 24, 30) und eine entsprechende Regelung des Förderventilators (21, 25, 31) im jeweiligen Förderabschnitt (15, 16, 18) ein konstanter Volumenstrom gewährleistet ist, und, in zumindest einer Abluftleitung (34, 37, 41, 45, 48) ein Abluftregelorgan (35, 38, 42, 46, 49) vorgesehen ist.
  2. Faservorbereitung nach Anspruch 1, dadurch gekennzeichnet, dass das Abluftregelorgan (35, 38, 42, 46, 49) eine Regelklappe oder ein Ventilator ist.
  3. Faservorbereitung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass in zumindest einer Abluftleitung (37, 41, 48) ein Abluftmessorgan (39, 43, 50) vorgesehen ist.
  4. Faservorbereitung nach Anspruch 3, dadurch gekennzeichnet, dass das Abluftmessorgan (39, 43, 50) in der Abluftleitung (37, 41, 48) eine Volumenstrom- oder eine Druckmessung ist.
  5. Faservorbereitung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass vor dem Saugzug (12) in der Saugleitung (13) eine Druckmessung (52) vorgesehen ist.
  6. Faservorbereitung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass am Beginn eines Förderabschnittes (14 - 18) jeweils eine Luftzuführung (22, 26, 29, 32) vorgesehen ist.
  7. Faservorbereitung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der erste Förderabschnitt (14) von einem Ballenöffner (1) und einem Erst-Kondenser (2), der letzte Förderabschnitt (18) von zumindest einer Karde (6) und einem Karden-Kondenser (5) und die dazwischenliegenden Förderabschnitte (15, 16, 17) von Reinigungsmaschinen (3), Mischern (4) oder Speichermaschinen begrenzt sind, wobei der jeweilige dazwischenliegende Förderabschnitt (15, 16, 17) die in einer Förderrichtung vorne liegende Maschine (3, 4, 5) einschliesst und zumindest die Abluftleitungen (37, 41) von Reinigungsmaschinen (3) und Kondenser (2, 5) jeweils ein Abluftregelorgan (38, 42) und ein Abluftmessorgan (39, 43) aufweisen.
  8. Verfahren zur Regelung einer Volumenstrom- und Druckverteilung in einer pneumatischen Flockenförderung in einer Faservorbereitung, wobei die Faservorbereitung aus einer Abfolge von Maschinen (1 - 6) und jeweils zwischen den Maschinen (1 - 6) angeordneten Förderabschnitten (14 - 18) und einem Abluftsystem zur Absaugung von Abluft aus den Förderabschnitten (14 - 18) besteht, dadurch gekennzeichnet, dass die Abluft aus zumindest einem Förderabschnitt (14 - 18) in einer dem Förderabschnitt (14 - 18) zugewiesenen Abluftleitung (34, 37, 45) aus dem Förderabschnitt (14 - 18) herausgeführt und die Abluftleitung (34, 37, 45) in eine Saugleitung (13) überführt und durch einen Saugzug (12) abgeführt wird und dass die Abluftleitungen (41, 48) welche nicht mit der Saugleitung (13) verbunden sind in einer Sammelleitung (10) zusammengeführt werden, wobei zumindest ein Volumenstrom in der Flockenförderung im jeweiligen Förderabschnitt (15, 16, 18) durch einen diesem Förderabschnitt (15, 16, 18) zugeordneten Förderventilator (21, 25, 31) und einer zugeordneten Volumenstrommessung (20, 24, 30) mit einer Regelung (23, 27, 33) auf einem konstanten Wert gehalten wird.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass in den Abluftleitungen (37, 41, 48) einzelner Förderabschnitte (15, 16, 18) mit einem Abluftmessorgan (39, 43, 50) ein Druck gemessen wird und über ein Abluftregelorgan (38, 42, 49) in den Abluftleitungen (37, 41, 48) der einzelnen Förderabschnitte (15, 16, 18) der Druck in der dem jeweiligen Förderabschnitt (15, 16, 18) zugordneten Maschine (3, 4, 6) auf einen konstanten Sollwert geregelt wird.
EP19197829.5A 2018-10-02 2019-09-17 Flockenförderung in einem faseraufbereitungssystem Active EP3633086B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01193/18A CH715422A1 (de) 2018-10-02 2018-10-02 Faservorbereitung mit einer Abfolge von Maschinen.

Publications (2)

Publication Number Publication Date
EP3633086A1 EP3633086A1 (de) 2020-04-08
EP3633086B1 true EP3633086B1 (de) 2022-11-02

Family

ID=67997374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19197829.5A Active EP3633086B1 (de) 2018-10-02 2019-09-17 Flockenförderung in einem faseraufbereitungssystem

Country Status (3)

Country Link
EP (1) EP3633086B1 (de)
CN (1) CN110983509B (de)
CH (1) CH715422A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ2020294A3 (cs) * 2020-05-22 2021-05-12 Rieter Cz S.R.O. Způsob regulace průtoku nebo tlaku v zařízení na dopravu odpadu v přípravě vlákna a zařízení
CH717716A1 (de) * 2020-08-05 2022-02-15 Rieter Ag Maschf Erfassung des Abganges in einer Faservorbereitungsanlage.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111718A (en) * 1960-01-15 1963-11-26 Tmm Research Ltd Apparatus for treating textile materials
US5143485A (en) * 1989-06-16 1992-09-01 Maschinenfabrik Rieter Ag Transport air control
DE9100543U1 (de) * 1990-02-22 1991-05-23 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum pneumatischen Speisen mindestens einer Faserverarbeitungsmaschine, z.B. Karde
US5038438A (en) * 1990-03-21 1991-08-13 Industrial Innovators, Inc. Automated yarn manufacturing system
DE4026330A1 (de) * 1990-08-20 1992-02-27 Rieter Ag Maschf Putzereilinie
US5709721A (en) * 1996-01-31 1998-01-20 Ltg Technologies, Inc. Air handling apparatus for textile machines
JP3826291B2 (ja) * 2002-09-10 2006-09-27 株式会社豊田自動織機 紡績機械及び紡績方法
DE10305049B4 (de) 2003-02-07 2018-08-02 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung zum pneumatischen Speisen mindestens einer Spinnereivorbereitungsmaschine, z.B. Karde, Reiniger
DE102015106415A1 (de) * 2014-12-13 2016-06-16 Trützschler GmbH + Co KG Textilmaschinenfabrik Verfahren und Vorrichtung zum Beschicken einer Anlage mit Fasern
JP6544036B2 (ja) * 2015-05-18 2019-07-17 三菱電機株式会社 布団乾燥機

Also Published As

Publication number Publication date
CN110983509A (zh) 2020-04-10
EP3633086A1 (de) 2020-04-08
CN110983509B (zh) 2023-02-03
CH715422A1 (de) 2020-04-15

Similar Documents

Publication Publication Date Title
EP3633086B1 (de) Flockenförderung in einem faseraufbereitungssystem
CN102209475A (zh) 用于将生切烟丝从烟丝加料单元输送给烟丝加工机的装置和方法
EP2867392B1 (de) Verfahren und vorrichtung zur regelung der faserzufuhr zu einer karde
CN107002309B (zh) 用于给设备供应纤维的方法和装置
US4527306A (en) Spinning preparation system and method for air-conditioning the same
US7752715B2 (en) Procedure and system for opening and proportioning synthetic material
US4864693A (en) Flow-through fiber preparation feed system and method
JPH01111023A (ja) 繊維処理設備
US10619270B2 (en) Production control in a blow room
US10793977B2 (en) Pressure regulation in a flock feed
EP3546625B1 (de) Speisevorrichtung für einer karde
US5121522A (en) Humidity and temperature air conditioning in a textile processing line
US5038438A (en) Automated yarn manufacturing system
US6905528B2 (en) Conveying air filtration system
CN101564202A (zh) 用于烟草加工业的机器运行的方法以及相应的机器
EP3450597B1 (de) Vorrichtung zur regelung eines faserflockenstromes in einem reiniger
US5143485A (en) Transport air control
US6907644B2 (en) Apparatus for pneumatically feeding at least one spinning preparation machine, for example a carding machine or cleaner
CN101115870A (zh) 用于纺纱机的进料竖井
CN113718380A (zh) 纤维制备中的垃圾运输系统
SU1265223A1 (ru) Устройство дл питани волокном группы чесальных машин
JPH0649713A (ja) カードへの原料繊維供給装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200923

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220525

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1528801

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019021364

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20221102

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1528801

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230302

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230202

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230302

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230203

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602019021364

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20230803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230927

Year of fee payment: 5

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230917

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230930

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230917

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221102

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230917

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230917

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230930

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240918

Year of fee payment: 6