CN107849811B - The nozzle box dry for the continuous form of air bearing - Google Patents
The nozzle box dry for the continuous form of air bearing Download PDFInfo
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- CN107849811B CN107849811B CN201680041710.6A CN201680041710A CN107849811B CN 107849811 B CN107849811 B CN 107849811B CN 201680041710 A CN201680041710 A CN 201680041710A CN 107849811 B CN107849811 B CN 107849811B
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- nozzle
- paper
- injection
- inclination
- box
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/18—Drying webs by hot air
- D21F5/185—Supporting webs in hot air dryers
- D21F5/187—Supporting webs in hot air dryers by air jets
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/18—Drying webs by hot air
- D21F5/185—Supporting webs in hot air dryers
- D21F5/187—Supporting webs in hot air dryers by air jets
- D21F5/188—Blowing devices
Abstract
A kind of nozzle box sprays the jet stream of hot gas for the mean level of the sea perpendicular to paper to be dried for blowing hot gas, including at least one direct impulse nozzle in the convective drying region of the continuous drying equipment for air bearing paper.Nozzle box includes multiple inclination injection nozzles, sprays the jet stream of hot gas with inclination angle for the mean level of the sea relative to paper to be dried.At least two inclination injection nozzles are provided as, and for it, the plane of the vector representation of the injection direction including at least two inclination injection nozzles does not include the vector for indicating the injection direction of direct impulse nozzle.
Description
Technical field
The present invention relates to the technical fields of the nozzle box for continuous air bearing (or suspension) paper drying equipment.This hair
The bright equipment further to the continuous air bearing drying for being used for paper or cardboard sheet for including this nozzle box；And it is related to
The operating method of this equipment.
Background technique
By means of convective drying or via the air bearing or (suspension) paper or cardboard of combined type radiation and convective drying
Piece drying is known.Paper (such as coated paper) is used for dry hot-air carrying or suspends, and the side of paper
It is not mechanically held in hothouse to selvedge.Such drying system must be provided to the paper for being transported through drying system
The highly effective drying opened and the suspension of correct air bearing.
US3823488 discloses a kind of suspension drier.The full duration of web of material (web) on fluid cushion is outstanding
The device for setting guidance includes multiple nozzle boxs, these nozzle boxs on the direction parallel with the plane for being provided with web of material each other
It is positioned adjacently.Nozzle box is formed with the corresponding injection nozzle inclined transversely to the direction of travel with web.Return flow line quilt
It provides for removing the fluid being blown into web from injection nozzle.It is handed in the travel direction of the web with nozzle box return flow line
Alternately it is arranged.Return flow line is the open gap limited by corresponding adjacent nozzle case.Inclined injection nozzle is separately positioned on
At two sides of each return flow line in return flow line.Angled nozzle can be slot nozzle or hole nozzle.If attached
It is added on slanting jet, jet stream is also oriented perpendicularly to web of material and/or with nozzle box on the contrary, then drying property can be into one
Step increases.
US6598315B1 discloses a kind of dry dress of the air bearing web for drying coated paper web or the like
Arrangement of nozzles in setting.Arrangement of nozzles includes at least one superpressure nozzle, be arranged in the travel direction of the web with it is inverse
All blow dry air on the direction of travel of web.Arrangement of nozzles further comprises and the outlet side of superpressure nozzle and/or enters
The direct impulse nozzle that mouth side is combined.In direct impulse nozzle, multiple nozzle slots or nozzle orifice are formed to hang down
Directly dry air is blowed towards web.Vertical range from the nozzle surface of direct impulse nozzle to web, which is greater than from superpressure, sprays
The vertical range of the support surface of mouth.Between the successive arrangement of nozzles on the direction of travel of paper web, vent pathway is provided
For humid air to be discharged.The series of arrangement of nozzles and vent pathway therebetween be provided at the paper web of air bearing top and
Both lower sections.Due to the air stream of generation, paper web rises and falls on the transporting direction of paper web.
Summary of the invention
It is an object of the invention to disclose a kind of nozzle box, for use in continuous form or cardboard drying equipment,
It causes paper more efficiently dry.It is an object of the invention to pairs that disclosure includes such nozzle box or multiple nozzle boxs
Drying equipment is flowed, and causes paper more efficiently dry.
The first aspect of the present invention is a kind of nozzle box, for blowing hot gas in the convective drying region of following equipment
Body, the equipment is continuous drying for air bearing paper, such as the coated paper for air bearing is continuous drying.
For the present invention, term " paper " must be understood as including cardboard.Preferably, nozzle box be provided for Span Continuous drying set
Standby width and install.Nozzle box includes at least one direct impulse nozzle, for perpendicular to the average flat of paper to be dried
The jet stream of face ejection hot gas.Nozzle box includes multiple inclination injection nozzles, for relative to the average flat of paper to be dried
Face sprays the jet stream of hot gas with inclination angle.Mean at least two with multiple.Nozzle box includes at least two inclination injection nozzles,
For at least two inclinations injection nozzle, the plane of the vector representation of the injection direction including at least two inclination injection nozzles
It does not include the vector for indicating the injection direction of direct impulse nozzle.For this file, vector indicates the hot gas sprayed by nozzle
Direction in the three-dimensional space of the average jet stream of body.In relevant occasion, the nozzle when magnitude of vector is in use equal to nozzle
Injection momentum.Vector can be placed on other origins maintain their directions in three dimensions in the sense that, vector
Its origin will be considered separately from.In order to evaluate three vectors (such as indicate impulse nozzle injection direction vector, and
Two vectors of each injection direction for indicating one of two inclination injection nozzles) whether in a plane, these three vectors
It is placed on identical origin, and observes whether these three vectors are located in three-dimensional space when being placed on identical origin
In one plane.
Preferably, nozzle box includes multiple direct impulse nozzles, for the mean level of the sea spray perpendicular to paper to be dried
The jet stream of hot gas out.
Nozzle box of the invention, when convective drying of the use in the continuous drying drier for air bearing paper
When in region, it is shown that lead to the more efficient drying of nozzle box compared with the prior art.Nozzle box provides the following terms
Required combination: the correct suspension of highly effective drying, the paper carried out by the hot gas that the nozzle of nozzle box sprays, and paper
It is not kept or guides at its lateral edge by mechanical system (such as chain or pin system).Nozzle box provides high convection current
Power density.Although the successful result using nozzle box of the invention is fully understood not yet, it is believed that in several directions
On there are turbulent flows to increase drying efficiency.Furthermore, it is possible to obtain the drying more evenly of air bearing paper.
Nozzle, either direct impulse nozzle still tilt injection nozzle, can for example be provided as plate material or casting
The circular hole (perhaps aperture) in metal is made perhaps as the slit in plate material or casting metal or as butt circle
The injection nozzle of taper.
Preferably, spray of the injection direction of injection nozzle relative to direct impulse nozzle or multiple direct impulse nozzles is tilted
The angle in direction is penetrated between 20 ° and 75 °, such as 30 °.
In a preferred embodiment, inclination injection nozzle is provided as the through-hole or logical in the inclined surface in nozzle box
Seam, wherein through-hole or straight joint are perpendicular to inclined surface.
Preferably, nozzle box includes hot gas room.Hot gas room be provided for at least one direct impulse nozzle and
Multiple inclination injection nozzles supply hot gas, to spray by impulse nozzle and by inclination injection nozzle.
In a preferred embodiment, inclination injection nozzle is provided in nozzle head, and nozzle head is placed in nozzle box.
Preferably, nozzle head mechanically (such as by means of bolt or rivet) is placed in nozzle box.It is highly preferred that nozzle head is by machine
Tool is removably placed in nozzle box, so that nozzle head can be replaced in nozzle box.Nozzle head can be for example including casting
Metal part is made, is for example provided in nozzle head by means of drilling out or processing hole and/or slot together with nozzle.
Preferably, nozzle box include at least 3 (and preferably at least 4, more preferably at least 5, more preferably at least 6, more preferably extremely
Few 7, more preferably at least 8, more preferably at least 9, more preferably at least 10, more preferably at least 11, more preferably at least 12, for example (,) it is 12) a
Inclination injection nozzle, wherein at least 3 (and preferably at least 4, more preferably at least 5, more preferably at least 6, more preferably at least 7, it is more excellent
Choosing at least 8, more preferably at least 9, more preferably at least 10, more preferably at least 11, more preferably at least 12, such as 12) a inclination injection
Each of nozzle has the vector for indicating its injection direction when in use；Wherein at least 3 (and preferably at least 4, more
Preferably at least 5, more preferably at least 6, more preferably at least 7, more preferably at least 8, more preferably at least 9, more preferably at least 10, more preferably
At least 11, more preferably at least 12, such as 12) each vector in the vector of a angled nozzle have in three dimensions it is different
Direction.
In a preferred embodiment, inclination injection nozzle includes the first inclination injection nozzle set and the second inclination injection spray
Mouth set, or be combined by the first inclination injection nozzle set and the second inclination injection nozzle collection.First inclination injection nozzle
Set is provided for blowing in a first direction；And the second inclination injection nozzle set is provided in a second direction
It blows.First direction is perpendicular to second direction.Preferably, first direction is (when nozzle box is mounted on for air bearing paper
When in the convective drying region of continuous drying equipment) it is on the transporting direction of paper.Further preferably, second direction (when
When nozzle box is mounted in the convective drying region for the continuous drying equipment of air bearing paper) be with it is to be dried
On the crosscutting direction of the transporting direction of paper.
It is highly preferred that inclination injection nozzle includes third inclination injection nozzle set and the 4th inclination injection nozzle set.
Third inclination injection nozzle set is provided for being blown up in third party, and the 4th inclination injection nozzle set is provided
For being blowed in fourth direction.Preferably, angle included between first direction and third direction is 180 °；And second party
It is 180 ° to angle included between fourth direction.
Preferably, nozzle box includes the suction opening for gas to be discharged.Nozzle box can be for example including circular suction
The suction opening of opening and/or slit is for being discharged gas.
Preferred nozzle box includes multiple nozzle units on nozzle box.Each unit in unit includes
At least one and preferably multiple direct impulse nozzles, for the mean level of the sea perpendicular to paper to be dried
Spray the jet stream of hot gas；And
Multiple inclination injection nozzles, wherein inclination injection nozzle is provided for being averaged relative to paper to be dried
Plane sprays the jet stream of hot gas with inclination angle.
At least two inclination injection nozzles of nozzle unit are provided as, for it, including at least two inclination sprays
The plane for penetrating the vector representation of the injection direction of nozzle does not include the injection direction for indicating the direct impulse nozzle of nozzle unit
Vector.Preferably, nozzle unit is provided as being placed in the nozzle head in nozzle box.Preferably, nozzle head is for example using spiral shell
Bolt or rivet and be mechanically placed in nozzle box.Even further preferably, nozzle head is for example by means of bolt with mechanical replaceable
Mode be placed in nozzle box.Preferably, nozzle is provided between nozzle unit for the suction opening of gas to be discharged
In case.It is highly preferred that for be discharged gas circular suction opening and/or slit suction opening can nozzle unit it
Between be provided in nozzle box；Wherein nozzle unit can be used as nozzle head appearance.
Preferably, when nozzle unit and/or nozzle head are by use, nozzle unit or nozzle head include hot gas room.Heat
Gas compartment is provided for at least one direct impulse nozzle and multiple inclination injection nozzles supply hot gas, by directly rushing
It hits nozzle and is sprayed by inclination injection nozzle.Component (such as pipe or pipeline) is provided in nozzle box so that hot gas to be supplied to
Hot gas room.It is highly preferred that the hot gas room in nozzle box be arranged to for hot gas being supplied to it is every in multiple nozzle units
The hot gas room of a nozzle unit.Nozzle unit can be used as nozzle head appearance.Nozzle head can be for example including casting metal portion
Point, it is for example provided in nozzle head by means of drilling out or processing hole and/or slot together with nozzle.
Preferably, the nozzle unit of nozzle box nozzle configuration having the same.Nozzle unit can be used as nozzle head appearance.
In a preferred embodiment, the wedge angle of nozzle unit or nozzle head is avoided by so as in the feelings of the contact without plan
The risk of damage paper is prevented in condition.
In a preferred embodiment, nozzle unit linear alignment on nozzle box is preferably so that dry dress ought be mounted on
When setting middle, nozzle unit is linearly provided in alignment on the width of drying equipment.
In a preferred embodiment, nozzle unit is alternately provided on nozzle box, is preferably so that, when being mounted on
When in drying device, nozzle unit is alternately provided on the width of drying device.In the exemplary embodiment, in nozzle box
First, third, the 5th nozzle unit linear alignment；And second nozzle unit is handed between first and third nozzle unit
It is wrong；4th nozzle unit interlocks between third and the 5th nozzle unit.The nozzle unit linear alignment of even-numbered；And it is odd
The nozzle unit linear alignment of number number, but each staggered position is in compared to the nozzle unit of even-numbered.It is preferred that
Ground, at least partly nozzle unit in nozzle unit include inclination injection nozzle, and for it, injection direction is oriented as court
To the space between nozzle unit.Preferably, in such embodiments, the nozzle unit of even-numbered includes for even number
The inclination injection nozzle that the direction in the space between the nozzle of number blows.Further preferably, in such embodiments, odd number
The nozzle unit of number includes the inclination injection nozzle blowed for the direction in the space between the nozzle to odd-numbered.
In a preferred embodiment, nozzle unit include at least 3 (and preferably at least 4, more preferably at least 5, more preferably extremely
Few 6, more preferably at least 7, more preferably at least 8, more preferably at least 9, more preferably at least 10, more preferably at least 11, more preferably at least
12, such as 12) a inclination injection nozzle, wherein at least 3 (and preferably at least 4, more preferably at least 5, more preferably at least 6, it is more excellent
Choosing at least 7, more preferably at least 8, more preferably at least 9, more preferably at least 10, more preferably at least 11, more preferably at least 12, such as
12) each of a inclination injection nozzle has the vector for indicating its injection direction when in use；Wherein at least 3 (simultaneously
And preferably at least 4, more preferably at least 5, more preferably at least 6, more preferably at least 7, more preferably at least 8, more preferably at least 9, it is more excellent
Choosing at least 10, more preferably at least 11, more preferably at least 12, such as 12) each vector in the vector of a inclination injection nozzle exists
There is different directions in three-dimensional space.
When nozzle unit occurs as nozzle head, it is preferable that nozzle head includes hot gas room.Hot gas room is provided use
In supplying hot gas at least one direct impulse nozzle and multiple inclination injection nozzles, to be sprayed by impulse nozzle and by inclination
Nozzle sprays.Component (such as pipe or pipeline) is provided at the hot gas room that hot gas is supplied to nozzle head in nozzle box.
It is highly preferred that nozzle head includes metal master, wherein metal master is at least partially around hot gas room.Even further preferably,
Nozzle head is made of metal completely.
When nozzle unit occurs as nozzle head, it is preferable that nozzle head includes the main body for coming from casting metal.It is preferred that
Ground, impulse nozzle and/or inclination injection nozzle are provided as the hole and/or slit that drill out or process in main body.It is preferred that
Ground, main body is at least partially around the hot gas room in nozzle head.
Include nozzle unit preferred nozzle box in (and may wherein nozzle unit as nozzle head appearance), until
A few direct impulse nozzle is provided in the center segment of nozzle unit；And it is straight around at least one to tilt injection nozzle
Connect impulse nozzle.
In a preferred embodiment, around at least one direct impulse nozzle inclination injection nozzle at least part,
And it more preferably all, is provided for inwardly blowing towards at least one direct impulse nozzle.
In a preferred embodiment, the first part around the inclination injection nozzle of at least one direct impulse nozzle is mentioned
For for inwardly being blowed towards at least one direct impulse nozzle.Around the inclination injection nozzle of at least one direct impulse nozzle
Second part be provided for being blown up in the side for being away from least one direct impulse nozzle.
In a preferred embodiment, the inclination injection nozzle in nozzle unit is provided so that, when inclination injection nozzle
When in operation, the hot gas jet for tilting injection nozzle is appeared in the plane perpendicular to the isogonism distribution of nozzle box.
In a preferred embodiment, nozzle box includes suction opening for gas to be discharged and nozzle box is included in nozzle
Multiple nozzle units on case.Preferably, nozzle is provided between nozzle unit for the suction opening of gas to be discharged
In case.
In a preferred embodiment, wherein nozzle unit is alternately provided on nozzle box, thus dry when being mounted on
When in dry device, nozzle unit is alternately provided on the width of drying device, the group of suction opening or suction opening
Also on nozzle box staggeredly, replace with nozzle unit.
In a preferred embodiment, nozzle box includes multiple nozzle heads.Each of nozzle head includes multiple (such as four
It is a) direct impulse nozzle, the jet stream of hot gas is sprayed for the mean level of the sea perpendicular to paper to be dried.Direct impulse nozzle
Be preferably provided so that, on the direction of nozzle box with the consistent some lines of the width direction of paper to be dried and nozzle head
Only one direct impulse nozzle intersection, and on the direction of nozzle box with other consistent lines of the width direction of paper to be dried
Intersect with two direct impulse nozzles of the same nozzle head, and the width direction on the direction of nozzle box with paper to be dried
Other consistent lines do not intersect with the direct impulse nozzle of the same nozzle head.This arrangement of direct impulse nozzle shows logical
It crosses direct impulse nozzle and provides the more preferable uniformity of heat transmitting to paper to be dried.
Preferably, each of nozzle head includes the inclination injection nozzle of one or more than one series, wherein inclination spray
Penetrating each of series of nozzle series includes the inclination injection nozzle for being provided certain amount on straight line.It is highly preferred that
At least one series of injection nozzle, and e.g. two serial inclination injection nozzles are tilted, in the as follows of injection nozzle
It is aligned on one wire on direction, the direction is consistent with the width direction of paper to be dried.In more preferred embodiment, two
The inclination injection nozzle of a series is aligned on one wire on the following direction of nozzle box, the width of the direction and paper to be dried
It is consistent to spend direction；The inclination injection nozzle of one of series is provided for blowing in the direction of motion of paper to be dried
It send；And the inclination injection nozzle of other series is provided on the direction opposite with the direction of motion of paper to be dried
It blows.It is highly preferred that nozzle head also comprises the inclination injection nozzle of at least one serial (and e.g. two series), it
Be aligned on line of the following direction of nozzle box at the angle between 10 degree and 80 degree, the width of the direction and paper to be dried
It is consistent to spend direction.
The second aspect of the present invention be it is a kind of for paper (such as coated paper, such as cardboard, for example through
The cardboard of coating) the dry equipment of continuous air bearing.The equipment includes such as the nozzle box in the first aspect of the present invention.Spray
Mouth case crosses over the width that can be used for paper transport in equipment.Preferably, nozzle unit, which is provided in striding equipment, can be used for paper
In the nozzle box of the width of transport, so that the nozzle in (such as in nozzle head) nozzle unit in nozzle box can handle to dry
The full duration of dry paper.
Preferably, which includes such as the more than one nozzle box in the first aspect of the present invention.Preferably, such as the present invention
First aspect in first jet case set be provided at can be used for paper transport plane above；And it is according to the present invention
The second nozzle case set of first aspect is provided at below the plane that can be used for paper transport.
Preferred equipment includes rows of infrared transmitter (for example, pre-mixing gas combustion infrared transmitter), and in infrared hair
Between emitter row or between the combination of infrared transmitter row such as the nozzle box in the first aspect of the present invention.
Preferred equipment includes one or more nozzle boxs.Component be provided for by nozzle box (such as in nozzle
Between unit or between nozzle head) and/or nozzle box between suction opening (such as circular suction opening or slit
Suction opening) aspirate hot gas.Component is provided with the gas collection that will aspirate into pipeline.Preferably, pipeline is mentioned
It is provided with for a part of the gas of suction being discharged from the device.Component is provided for supplying fresh air in equipment,
In the air of fresh supply and the gas mixing of suction.Pipeline is provided at least part and fresh confession of the gas will aspirate
The air answered is recycled back into one or more nozzle boxs in nozzle box together, simultaneously for the direct impulse nozzle by nozzle box
It is blown by inclination injection nozzle on paper to be dried.Component is provided in the gas of suction and the air of fresh supply
Mixture heats it before being supplied to (multiple) nozzle box.Such component may, for example, be heat exchanger or gas burning
Device.Such gas burner may be provided such that the burning gases of gas burner are added to the gas of suction and new
The mixture of the air of fresh supply.Component (for example, damper) is provided the flowing to control gas in the duct.
In a preferred embodiment, which includes the suction opening for gas to be discharged.In a preferred embodiment, should
Equipment includes multiple nozzle boxs in the direction of motion of paper；And between nozzle box, including Gas Infrared transmitter.Suction
Opening is preferably located between nozzle box and Gas Infrared transmitter.
In preferred equipment, one or more than one nozzle box is provided so that the vector sum of following vector is directed toward
Paper passes through the opposite direction of the transporting direction of drying equipment, these vector representation injection directions and the inclination with nozzle box
The injection momentum of injection nozzle is as magnitude.
Preferred equipment includes such as multiple nozzle boxs in the first aspect of the present invention.At least two continuous nozzle luggages
Nozzle unit is included, the position of the nozzle unit in the first jet case in two continuous nozzle boxs is continuously being sprayed with two
When the position of the nozzle unit in second nozzle case in mouth case is compared, these nozzle units are staggered.Preferably, one
The infrared transmitter (more preferably Gas Infrared transmitter) of series is located between two continuous nozzle boxs.Even more preferably
, when between nozzle box and a series of infrared transmitter, suction opening is provided for discharge gas.
The third aspect of the present invention is a kind of for the continuous drying of paper (such as coated paper, such as cardboard)
Method, wherein such as being used for continuous drying equipment in the second aspect of the present invention.The method comprising the steps of: by paper
(such as coated paper) is transported by equipment, so that paper is dried in for continuous drying equipment.Paper
It is air bearing in a device, the selvedge of paper is not kept by mechanical means.Paper passes through drying equipment in paper
It rises and falls on transporting direction.In addition, paper rises and falls on the direction vertical by the transporting direction of drying equipment with paper.It is preferred that
Ground, the speed that paper is transported through drying equipment are at least 50m/min, are more preferably at least 150m/min, more preferably
It is at least 300m/min, and more preferably larger than 500m/min.Preferred range be between 300 and 2500m/min, it is more excellent
The range of choosing is between 500 and 1500m/min.
In a preferred method, the vector sum of following vector is directed toward the phase negative side that paper passes through the transporting direction of drying equipment
To the injection momentum of these vector representation injection directions and the inclination injection nozzle with nozzle box is as magnitude.
Preferably, the hot gas sprayed by the inclination injection nozzle of flow box is on the direction opposite with the movement of paper
Quality per unit time, than the hot gas that is sprayed by the inclination injection nozzle of flow box in the direction of motion of paper every list
The quality of position time is higher by 10% or more；And it is more preferably higher by 20% or more, is more preferably higher by 50% or more, more preferably
Ground is higher by 75% or more, is even more preferably higher by 100% or more.Preferably, it is sprayed by the inclination injection nozzle of nozzle box
Quality of the hot gas on the direction opposite with the movement of paper per unit time, than the inclination injection nozzle institute by nozzle box
Quality of the hot gas of ejection in the direction of motion of paper per unit time is higher by 150% or less.
Detailed description of the invention
Fig. 1 shows the example such as the nozzle box in the first aspect of the present invention.
Fig. 2 and Fig. 3 respectively illustrates the front view and rearview that nozzle head in the present invention can be used.
Fig. 4 shows the example such as the nozzle box in the first aspect of the present invention.
Fig. 5 shows another example again such as the nozzle box in the first aspect of the present invention.
Fig. 6 shows the segment on paper transporting direction；And Fig. 7 shows dry for the continuous air bearing of paper
Equipment exemplary transverse direction on section, which includes such as the nozzle box in first aspect present invention.
Fig. 8 shows the vector of the jet stream of the inclination injection nozzle of one of nozzle box of equipment for indicating Fig. 6 and Fig. 7.
Fig. 9 shows another example such as the nozzle box in the first aspect of the present invention.
Figure 10 shows the reality of the dry equipment of the continuous air bearing for paper according to the second aspect of the invention
Apply example.
Figure 11 shows the embodiment such as the nozzle box in the first aspect of the present invention.
Figure 12 shows air dryer apparatus according to the second aspect of the invention.
Specific embodiment
Fig. 1 shows the example such as the nozzle box 100 in the first aspect of the present invention.Nozzle box 100 is provided for
Hot gas is blowed in the convective drying region of following equipment, paper (including cardboard) continuous of the equipment for air bearing is done
It is dry, such as coated paper for air bearing is continuous drying；And it is dry that nozzle box 100 is provided for Span Continuous
The width of equipment and install.Nozzle box 100 includes multiple nozzle units 105 on nozzle box.In this example, nozzle list
Member 105 is nozzle head 105, they are removedly arranged on nozzle box 100 by means of bolt 107 and nut.It is also possible to
, nozzle unit is integrally formed by the material of nozzle box.In this example, although it is not essential to the invention, spray
The nozzle configuration having the same of all nozzle heads of mouth case.Nozzle head 105 is alternately provided on nozzle box, to work as quilt
When being mounted in drying device, nozzle unit is alternately provided on the width of drying device.In this example, in nozzle box
First, third, the 5th nozzle unit linear alignment；And second nozzle unit is handed between first and third nozzle unit
It is wrong；4th nozzle unit interlocks between third and the 5th nozzle unit.The nozzle unit linear alignment of even-numbered；And it is odd
The nozzle unit linear alignment of number number, but each staggered position is in compared to the nozzle unit of even-numbered.Nozzle
Unit includes inclined injection nozzle, for these inclined injection nozzles, injection direction be oriented as towards nozzle unit it
Between space.The nozzle unit of even-numbered includes being blowed for the direction in the space between the nozzle to even-numbered
Angled nozzle.The nozzle unit of odd-numbered includes being blowed for the direction in the space between the nozzle to odd-numbered
Angled nozzle.
However, other arrangements of nozzle unit or nozzle head in nozzle box are possible, such as nozzle unit or nozzle
Head can on nozzle box linear alignment, such as to when being mounted in drying device, width of the nozzle unit in drying device
It is linearly provided in alignment on degree.
Fig. 2 and Fig. 3 respectively illustrates the front view (Fig. 2) of nozzle head 105 used in the exemplary nozzle case 100 of Fig. 1
With rearview (Fig. 3).Nozzle head 105 includes drilling 103, allows by means of screw bolt and nut removably to be disposed nozzle head
Into nozzle box.Nozzle head 105 includes four direct impulse nozzles 108, for the mean level of the sea perpendicular to paper to be dried
Spray the jet stream of hot gas.Nozzle head 105 includes 12 inclined injection nozzles 109,110,111,112, is provided for
Mean level of the sea relative to paper to be dried sprays the jet stream of hot gas with inclination angle.The inclined quilt of injection nozzle 109 and 111
It is provided as, for it, the plane of the vector representation of the injection direction including inclined injection nozzle 109 and 111 does not include
Indicate the vector of the injection direction of the direct impulse nozzle 108 of nozzle unit.On the other hand, by inclined 111 He of injection nozzle
The plane that the vector representation of 112 injection direction is formed includes the injection direction for indicating the direct impulse nozzle 108 of nozzle unit
Vector.In nozzle box head 105, although not essential to the invention, direct impulse nozzle 108 is provided at nozzle head
In 105 center segment.Inclined injection nozzle 109,110,111,112 surrounds direct impulse nozzle 108.Inclined injection spray
Mouth 109 and 110 is provided for inwardly blowing towards direct impulse nozzle 108.Inclined injection nozzle 109,110,111,112
Around direct impulse nozzle 108.Inclined injection nozzle 111 and 112 is provided for being away from direct impulse nozzle 108
Side is blown up.
In the inside of nozzle head 105, provide hot gas room 122 (referring to Fig. 3).Hot gas room is provided for at least one
A direct impulse nozzle and multiple inclined injection nozzles supply hot gas, to spray by impulse nozzle and by inclined injection nozzle
Out.Hot gas room in nozzle box is arranged to the air chamber for each nozzle head being supplied to hot gas in multiple nozzle heads.
Optionally, nozzle box 100 can be provided between nozzle head 105 for the suction opening 125 of gas to be discharged
In (referring to Fig. 1).
Fig. 4 shows another example such as the nozzle box 100 in the first aspect of the present invention.Nozzle box 100 is provided use
Hot gas is blowed in the convective drying region in following equipment, the equipment is continuous drying for air bearing paper, such as
Coated paper for air bearing it is continuous drying；And nozzle box 100 is provided for Span Continuous drying equipment
Width and install.Nozzle box 100 includes multiple nozzle units 105 on nozzle box.In this example, nozzle unit 106
It is nozzle head 106, they are removedly arranged on nozzle box 100 by means of bolt 107 and nut.It is also possible that
Nozzle unit is integrally formed by the material of nozzle box.In this example, although it is not essential to the invention, nozzle box
All nozzle head nozzle configurations having the same.Nozzle head 106 alternately provides on nozzle box, thus when being mounted on drying
When in device, nozzle unit is alternately provided on the width of drying device.However, nozzle unit or nozzle in nozzle box
Other arrangements of head be it is possible, such as nozzle unit or nozzle head can on nozzle box linear alignment, such as to when peace
When in drying device, nozzle unit is linearly provided in alignment on the width of drying device.
In the inside of nozzle head 106, hot gas room is provided.Hot gas room is provided for at least one directly impact spray
Mouth and multiple inclined injection nozzles supply hot gas, to spray by impulse nozzle and by inclined injection nozzle.In nozzle box
Hot gas room be arranged to the air chamber of each nozzle head being supplied to hot gas in multiple nozzle heads.
Optionally, it can be provided in nozzle box 100 between nozzle head 106 for the suction opening of gas to be discharged.
Alternatively, in drying equipment, specific suction box can be placed in alignment with nozzle box or multiple nozzle boxs.
Fig. 5 shows another example again such as the nozzle box 100 in the first aspect of the present invention.Nozzle box 100 is included in
The nozzle unit 105 of linear alignment on nozzle box, so that nozzle unit 105 is in drying device when being mounted in drying device
Width on be linearly provided in alignment.Optionally, nozzle box is provided with the pump unit 125 between nozzle unit.
Fig. 6 shows the segment 600 on paper transporting direction；And Fig. 7 is shown for paper (such as coated paper
) the dry equipment of continuous air bearing exemplary transverse direction on section 700, which includes such as of the invention the
Multiple nozzle boxs 670,770 of (for example, being shown in the example of such as Fig. 1 or Fig. 4) in one side.Nozzle box 670 is crossed in equipment
It can be used for the width of transporting sheets 650,750.Nozzle box 770 is laterally placed in support construction 772.In this example, such as
First jet case set in the first aspect of the present invention is provided above the plane that can be used for transporting sheets；And according to this
The second nozzle case set of the first aspect of invention is provided at below the plane that can be used for transporting sheets.Coated paper
650 move up through equipment in the side indicated by arrow 660.Although not being necessary, equipment include be located at nozzle box 670 it
Between rows of infrared transmitter 680, such as pre-mixing gas combustion infrared transmitter.
The air bearing in a device of paper 650,750, and the selvedge of paper does not pass through mechanical means and keeps.Paper 650,
750 rise and fall on transporting direction of the paper by drying equipment.In addition, paper 650,750 is passing through drying equipment with paper
Transporting direction rises and falls on vertical direction.
Fig. 8 shows the vector of the jet stream of the inclination injection nozzle of one of nozzle box of equipment for indicating Fig. 6 and Fig. 7.Arrow
First 860 show transporting direction of the paper by drying equipment.Vector V1Indicate the following inclination injection spray an of nozzle box
The sum of vector of mouth, these inclination injection nozzles have injection component on transporting direction of the paper by equipment；Vector V2Table
Show that the sum of the vector of the following inclination injection nozzle of same nozzle case, these inclination injection nozzles are passing through equipment with paper
Transporter is upper in the opposite direction to have injection component.Vector VSIt is vector V1And V2The sum of, and set with paper by drying
Standby transporter is upper in the opposite direction to have component.
Fig. 9 shows another example of nozzle box 900 according to the first aspect of the invention.Nozzle box 900 is provided use
Hot gas is blowed in the convective drying region in the continuous drying equipment for air bearing paper, paper is relative to nozzle
The direction of motion of case 900 is indicated by arrow 960.Nozzle box 900 includes multiple nozzle units 905 on nozzle box.Nozzle
Unit 905 is nozzle head 905, they are removedly arranged on nozzle box 900 by means of bolt 907 and nut.Nozzle head
905 alternately provide on nozzle box, so that nozzle unit is on the width of drying device when being mounted in drying device
Alternately it is provided.Each nozzle head 905 includes two direct impulse nozzles 908, for perpendicular to the flat of paper to be dried
Equal plane sprays hot gas.Nozzle head 905 includes inclined injection nozzle 909,911,912, is provided for relative to dry
The mean level of the sea of dry paper sprays the jet stream of hot gas with inclination angle.Inclined injection nozzle 909 is provided in paper
The direction of motion transverse direction on spray hot gas jet stream；Vector 995 and 997 is shown by inclined injection nozzle 909
The emission direction of the jet stream of progress.Four inclined injection nozzles 911 are provided for spraying on the direction indicated by arrow 991
Exit flow；It is the direction opposite with the direction of motion of paper.Two inclined injection nozzles 912 are respectively by arrow 993 and 994
The side of instruction is blown up, they are at an acute angle with the direction of motion of paper；Two inclined injection nozzles 912 be away from each other and
It blows.There is provided inclined injection nozzle 912, (direction of motion of its jet stream and paper is at an acute angle；And the inclined spray of two of them
Nozzle 912 is penetrated to be away from each other and blow) show the improved drying efficiency for leading to paper.
Therefore, the quality of the hot gas sprayed per unit time is for every in inclined injection nozzle 909,911,912
A is identical.As a result, the quality of the hot gas sprayed per unit time on the direction opposite with the movement of paper is greater than
The quality of the hot gas sprayed per unit time in the direction of motion of paper；Such arrangement, which is shown, provides drying equipment
Higher efficiency.
Figure 10 shows the reality of the dry equipment of the continuous air bearing for paper according to the second aspect of the invention
Apply example 1000.Equipment 1000 includes such as multiple nozzle boxs 1070,1071 in the first aspect of the present invention.Two continuous nozzles
Case 1070,1071 includes nozzle unit 1006, by the nozzle unit in the first jet case in two continuous nozzle boxs
When position is compared with the position of the nozzle unit in the second nozzle case in two continuous nozzle boxs, nozzle unit 1006
It is staggered.A series of infrared transmitter 1080 (preferably Gas Infrared transmitter) is located at two continuous nozzle boxs
1070, between 1071.Between nozzle box and a series of infrared transmitter, suction opening 1090 is provided for discharge gas
Body.
Figure 11 shows another embodiment such as the nozzle box in the first aspect of the present invention.Nozzle box 1100 is provided use
Hot gas is blowed in the convective drying region in the continuous drying equipment for air bearing paper, paper is relative to nozzle
The direction of motion of case 1100 is indicated by arrow 1160.Nozzle box 1100 includes multiple nozzle units 1105 on nozzle box.
Nozzle unit 1105 is nozzle head 1105, they are removedly arranged on nozzle box 1100.Nozzle head 1105 does not have wedge angle,
The risk of paper is damaged in the case where to prevent the unplanned contact between paper and nozzle head to be dried.Nozzle head 1105 is handed over
It provides on nozzle box wrongly, so that nozzle unit interlocks on the width of drying device when being mounted in drying device
Ground is provided.Each nozzle head in nozzle head includes four direct impulse nozzles 1108, each for perpendicular to be dried
The mean level of the sea of paper sprays the jet stream of hot gas.Direct impulse nozzle is provided so that, on the direction of nozzle box and to dry
The consistent some lines of the width direction of dry paper intersect with the direct impulse nozzle of the only one of nozzle head, and the direction of nozzle box
Upper and other consistent lines of width direction of paper to be dried intersect with two direct impulse nozzles of the same nozzle head, and
On the direction of nozzle box and other consistent lines of the width direction of paper to be dried not with the direct impact of the same nozzle head
Nozzle intersection.This arrangement of direct impulse nozzle, which is demonstrated, provides heat transfer to paper to be dried by direct impulse nozzle
The more preferable uniformity passed.
Each of nozzle head includes four serial inclination injection nozzles, wherein every in the series of inclination injection nozzle
A series includes the inclination injection nozzle for being provided certain amount on straight line.Two serial inclination injection nozzles 1110 are every
A to be aligned on one wire on the following direction of nozzle box, the direction is consistent with the width direction of paper to be dried；It is therein
One series is provided for blowing in the direction of motion of paper to be dried；And another series be provided for to
The side that the direction of motion of dry paper is opposite is blown up.
Nozzle head additionally includes two serial inclination injection nozzles 1111,1112, each of which with nozzle box
Following direction is aligned on the line at such as 60 ° angles, and the direction is consistent with the width direction of paper to be dried.
Each nozzle in nozzle (direct impulse nozzle and inclination injection nozzle) is as the surface perpendicular to nozzle head
The circular open drilled out of (at the surface, circular open has been drilled) and be provided in nozzle head.
Between nozzle head, nozzle box is provided with the suction opening 1125 for gas to be discharged.
The nozzle box arrangement of Figure 11 particularly illustrates the beneficial outcomes in terms of the drying efficiency of coated paper, this is
Due to the specific arrangements of direct impulse nozzle and inclination injection nozzle.
Figure 12 shows 1200 equipment of hot air dryer according to the second aspect of the invention.Hot air dryer equipment
1200 multiple nozzle boxs 1270 including shell 1201 and according to the first aspect of the invention.Component is provided for by spraying
Suction opening in mouth case (such as between nozzle unit or between nozzle head) and/or between nozzle box is (such as round
The suction opening of shape or the suction opening of slit) aspirate hot gas.Component is provided for arriving the gas collection of suction
In pipeline 1202.Preferably, pipeline 1204 is provided so that a part of the gas of suction to be discharged from the device.Component is provided
For supplying fresh air in equipment, wherein the air (introducing via pipeline 1216) of fresh supply and the gas of suction are mixed
It closes.Pipeline 1224 be provided and recycled together with the air of fresh supply at least part for the gas that will be aspirated (such as by means of
Help fan 1218) return to one or more nozzle boxs in nozzle box, with for the direct impulse nozzle by nozzle box and by
Inclination injection nozzle is blown on paper to be dried.Component 1220 is provided in the air of the gas of suction and fresh supply
Mixture be supplied to before (multiple) nozzle box and heat it.Such component may, for example, be heat exchanger or gas combustion
Burner.Such gas burner may be provided such that the burning gases of gas burner be added to suction gas and
The mixture of the air of fresh supply.Component (being not shown in Figure 12, such as damper) is provided in the duct to control gas
Flowing in different pipelines or pipe.
Claims (15)
1. a kind of nozzle box, for blowing heat in the convective drying region of the continuous drying equipment for air bearing paper
Gas, the nozzle box include:
At least one direct impulse nozzle sprays the jet stream of hot gas for the mean level of the sea perpendicular to paper to be dried；With
And
Multiple inclination injection nozzles, wherein inclination injection nozzle is provided for relative to described in the paper to be dried
Mean level of the sea sprays the jet stream of hot gas with inclination angle；
Wherein at least two inclination injection nozzle be provided as, for it is described at least two inclination injection nozzle, including it is described extremely
The plane of the vector representation of the injection direction of few two inclinations injection nozzle does not include the injection direction for indicating direct impulse nozzle
Vector.
2. nozzle box according to claim 1, wherein the nozzle box includes at least three inclination injection nozzles, wherein institute
The each inclination injection nozzle stated at least three inclination injection nozzles has the vector for indicating its injection direction when in use；
Wherein each vector in the vector of at least three inclinations injection nozzle has different directions in three dimensions.
3. nozzle box according to claim 1 or 2,
Wherein the inclination injection nozzle includes the first inclination injection nozzle set and the second inclination injection nozzle set, Huo Zheyou
First inclination injection nozzle set and the second inclination injection nozzle collection are combined into；
Wherein the first inclination injection nozzle set is provided for blowing in a first direction；And wherein described second inclines
Oblique injection nozzle set is provided for blowing in a second direction；And wherein the first direction is perpendicular to the second party
To.
4. nozzle box according to claim 1, wherein the nozzle box includes the suction opening for gas to be discharged.
5. nozzle box according to claim 1, wherein the nozzle box includes multiple nozzles on the nozzle box
Unit, wherein each unit in the unit includes:
At least one direct impulse nozzle sprays penetrating for hot gas for the mean level of the sea perpendicular to the paper to be dried
Stream；And
Multiple inclination injection nozzles, wherein inclination injection nozzle is provided for relative to described in the paper to be dried
Mean level of the sea sprays the jet stream of hot gas with inclination angle；
Wherein at least two inclination injection nozzles of the nozzle unit are provided as, for at least two inclinations injection spray
The plane of mouth, the vector representation of the injection direction including at least two inclinations injection nozzle does not include indicating the nozzle list
The vector of the injection direction of the direct impulse nozzle of member.
6. nozzle box according to claim 5, wherein the suction opening for gas to be discharged is mentioned between nozzle unit
For in the nozzle box.
7. nozzle box according to claim 5, wherein nozzle unit is provided as the spray being placed in the nozzle box
Mouth.
8. nozzle box according to claim 5, wherein at least one described direct impulse nozzle is provided at the nozzle
In the center segment of unit；And
Wherein the inclination injection nozzle surrounds at least one described direct impulse nozzle.
9. nozzle box according to claim 8,
Wherein the first part of the inclination injection nozzle is provided for inside towards at least one described direct impulse nozzle
It blows；
And wherein the second part of the inclination injection nozzle is provided for being away from least one described directly impact
The side of nozzle is blown up.
10. nozzle box according to claim 5, wherein the inclination injection nozzle in nozzle unit is provided to enable
, when the inclination injection nozzle is in operation, the jet stream of the inclination injection nozzle is appeared in perpendicular to the spray
In the plane of the isogonism distribution of mouth case.
11. a kind of dry equipment of continuous air bearing for paper, including according to claim 1 described in any one of -10
Nozzle box, wherein the nozzle box is across the width that can be used for paper transport in the equipment.
12. equipment according to claim 11, one of them or it is more than one according to claim 1 to any one of 10 institutes
The nozzle box stated is provided so that the vector sum of following vector is directed toward the paper and passes through the phase of the transporting direction of drying equipment
Opposite direction, the injection momentum conduct of the vector representation injection direction and the inclination injection nozzle with the nozzle box
Magnitude.
13. equipment according to claim 11 or 12, wherein the equipment includes multiple according to claim 1 to appointing in 10
Nozzle box described in one；And the continuous nozzle box of wherein at least two includes nozzle unit, will be described two continuous
The position of the nozzle unit in first jet case in nozzle box and the second nozzle in described two continuous nozzle boxs
When the position of the nozzle unit in case is compared, the nozzle unit is staggered.
14. a kind of continuous drying method for paper,
Wherein the equipment of the continuous air bearing drying described in any one of 1 to 13 for paper is made according to claim 1
With；
Wherein paper is transported through the equipment, to do in for the continuous drying equipment to the paper
It is dry；
Wherein the paper is air bearing in the apparatus, and the selvedge of the paper is not kept by mechanical means；
Wherein the paper rises and falls on transporting direction of the paper by drying equipment；
And wherein the paper rises and falls on the direction vertical by the transporting direction of the drying equipment with the paper.
15. according to the method for claim 14, wherein the vector sum of following vector, which is directed toward the paper, passes through the drying
The opposite direction of the transporting direction of equipment, the spray of the vector representation injection direction and the inclination injection nozzle with nozzle box
Momentum is penetrated as size.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15290187 | 2015-07-16 | ||
| EP15290187.2 | 2015-07-16 | ||
| PCT/EP2016/065969 WO2017009133A1 (en) | 2015-07-16 | 2016-07-06 | Nozzle box for air-borne continuous paper sheet drying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107849811A CN107849811A (en) | 2018-03-27 |
| CN107849811B true CN107849811B (en) | 2019-10-15 |
Family
ID=53761300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680041710.6A Active CN107849811B (en) | 2015-07-16 | 2016-07-06 | The nozzle box dry for the continuous form of air bearing |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20180142413A1 (en) |
| EP (1) | EP3322852B1 (en) |
| JP (1) | JP2018523087A (en) |
| CN (1) | CN107849811B (en) |
| ES (1) | ES2731685T3 (en) |
| WO (1) | WO2017009133A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3188708A1 (en) | 2020-08-07 | 2022-02-10 | Access To Advanced Health Institute | Purified saponins and chromatographic process for purification of same |
| EP4296064A1 (en) | 2022-06-22 | 2023-12-27 | Canon Production Printing Holding B.V. | Gas impingement unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823488A (en) * | 1971-04-28 | 1974-07-16 | Monforts Fa A | Apparatus for full-width suspension guidance of webs of material |
| US4271601A (en) * | 1978-09-11 | 1981-06-09 | Valmet Oy | Web dryer operating on the air float principle |
| US6598315B1 (en) * | 1999-06-30 | 2003-07-29 | Metso Paper, Inc. | Nozzle arrangement in airborne web-drying and method for improving heat transfer in airborne web-drying |
| CN1942727A (en) * | 2004-04-13 | 2007-04-04 | 美格特克系统公司 | Step air foil |
| CN103210143A (en) * | 2010-11-16 | 2013-07-17 | 安德里茨技术资产管理有限公司 | A cellulose pulp dryer having blow boxes, and a method of drying a web of cellulose pulp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471766A (en) * | 1993-03-18 | 1995-12-05 | Valmet Paper Machinery, Inc. | Method in contact-free air-drying of a material web as well as a nozzle-blow-box and a pulp dryer that make use of the method |
-
2016
- 2016-07-06 CN CN201680041710.6A patent/CN107849811B/en active Active
- 2016-07-06 WO PCT/EP2016/065969 patent/WO2017009133A1/en active Application Filing
- 2016-07-06 US US15/580,035 patent/US20180142413A1/en not_active Abandoned
- 2016-07-06 EP EP16736124.5A patent/EP3322852B1/en active Active
- 2016-07-06 ES ES16736124T patent/ES2731685T3/en active Active
- 2016-07-06 JP JP2018521469A patent/JP2018523087A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823488A (en) * | 1971-04-28 | 1974-07-16 | Monforts Fa A | Apparatus for full-width suspension guidance of webs of material |
| US4271601A (en) * | 1978-09-11 | 1981-06-09 | Valmet Oy | Web dryer operating on the air float principle |
| US6598315B1 (en) * | 1999-06-30 | 2003-07-29 | Metso Paper, Inc. | Nozzle arrangement in airborne web-drying and method for improving heat transfer in airborne web-drying |
| CN1942727A (en) * | 2004-04-13 | 2007-04-04 | 美格特克系统公司 | Step air foil |
| CN103210143A (en) * | 2010-11-16 | 2013-07-17 | 安德里茨技术资产管理有限公司 | A cellulose pulp dryer having blow boxes, and a method of drying a web of cellulose pulp |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3322852B1 (en) | 2019-05-29 |
| CN107849811A (en) | 2018-03-27 |
| EP3322852A1 (en) | 2018-05-23 |
| US20180142413A1 (en) | 2018-05-24 |
| ES2731685T3 (en) | 2019-11-18 |
| WO2017009133A1 (en) | 2017-01-19 |
| JP2018523087A (en) | 2018-08-16 |
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