CN108867141B - Penetrating drying cylinder - Google Patents
Penetrating drying cylinder Download PDFInfo
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- CN108867141B CN108867141B CN201810799252.3A CN201810799252A CN108867141B CN 108867141 B CN108867141 B CN 108867141B CN 201810799252 A CN201810799252 A CN 201810799252A CN 108867141 B CN108867141 B CN 108867141B
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- pore plate
- drying cylinder
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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
- D21F5/02—Drying on cylinders
- D21F5/021—Construction of the cylinders
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Abstract
The application discloses pierce through dryer, including the dryer body to and the hot-blast cover of setting on the dryer body, wind-shielding device has been installed to the face inboard of dryer body, wind-shielding device is used for stopping that hot-blast cover blows hot-blast place loss outside the region is placed to the paper web for the transmission comes hot-blast can only blow to the paper web surface in the hot-blast cover of follow, and can not follow other places and run off, thereby the hot-blast utilization ratio in the hot-blast cover of improvement, and then improved the dry efficiency of paper web.
Description
Technical Field
The invention relates to the field of manufacturing of paper drying equipment, in particular to a penetration drying cylinder.
Background
The drying cylinder is a common paper drying device in the field of papermaking, and is a hollow cylinder which is generally made of cast iron and is provided with covers at two ends, and steam is introduced into the cylinder to dry paper conveyed to the cylinder surface in the operation process.
In order to solve the problems, the inventor invents a drying cylinder, wherein a plurality of air holes are distributed on the cylinder wall of a cylinder barrel, a C-shaped air hood with a hollow inner cavity is wound outside the cylinder barrel, and a plurality of air injection holes are distributed on the C-shaped arc cylinder wall of the air hood opposite to the cylinder barrel. Through the structure, the paper fibers are changed from two-dimensional plane arrangement into three-dimensional arrangement, the fiber expansion rate and the utilization rate are improved, the fiber utilization rate can be improved by 20 percent, the opening rate of the air holes in the surface of the cylinder barrel can be up to 90 percent, the heat energy utilization rate is greatly improved, and the transverse air supply tends to be uniform.
However, the drying cylinder has certain defects that when the paper web cannot completely cover the air holes on the surface of the drying cylinder, a part of hot air passes through the drying cylinder from the air holes which are not covered by the paper web, so that the effective utilization rate of the hot air is not high, the drying efficiency of the paper is limited, and energy for manufacturing the hot air is wasted.
Therefore, solving the above problems has become an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the invention provides the penetrating drying cylinder which can effectively solve the problems that the effective utilization rate of wind caused by the paper web problem is not high, and the drying efficiency of paper is limited.
The technical scheme provided by the invention is as follows:
a penetration drying cylinder comprises a drying cylinder body and a hot air cover arranged on the drying cylinder body, wherein a wind shielding device is arranged on the inner side of the cylinder surface of the drying cylinder body. The wind shielding device is used for preventing hot air blown by the hot air hood from flowing away from a place outside the paper web placing area.
Preferably, the wind shielding device comprises a shielding component for blocking hot air from flowing to two sides of the paper web placing area, and an amplitude modulation mechanism for controlling the movement or the expansion of the shielding component.
Preferably, the shielding component comprises a left amplitude modulation block and a right amplitude modulation block which are respectively arranged at two sides of the paper web placing area, and the amplitude modulation mechanism drives the left amplitude modulation block and the right amplitude modulation block to move back to back or towards each other.
Preferably, the amplitude modulation mechanism comprises an amplitude modulation screw rod and a speed reducing motor, the speed reducing motor is connected with one end of the amplitude modulation screw rod, the left amplitude modulation stop block and the right amplitude modulation stop block are respectively connected with the amplitude modulation screw rod through amplitude modulation nuts, and the speed reducing motor is used for driving the amplitude modulation screw rod to enable the left amplitude modulation stop block and the right amplitude modulation stop block to move back to back or towards each other.
Preferably, one end of the amplitude-modulation screw rod is provided with a left thread, the other end of the amplitude-modulation screw rod is provided with a right thread, and two ends of the amplitude-modulation screw rod are respectively connected with the left amplitude-modulation stop block and the right amplitude-modulation stop block through amplitude-modulation nuts.
Preferably, the hot air hood comprises a wet end half hood and a dry end half hood, the wet end half hood and the dry end half hood being symmetrically arranged on the cylinder surface of the drying cylinder.
Preferably, the hot air hood is further provided with a first air adjusting mechanism for adjusting the amount of hot air transferred to the drying cylinder body, the first air adjusting mechanism comprises a first fixed pore plate arranged at an air blowing opening of the hot air hood and provided with holes, a first movable pore plate arranged above or below the first fixed pore plate, and a first driving mechanism for driving the first movable pore plate to move along the first fixed pore plate, and the holes of the first movable pore plate can coincide with the first fixed pore plate.
Preferably, the first driving mechanism includes an air adjusting screw rod connected to the first movable orifice plate, and a first adjusting handwheel connected to the air adjusting screw rod through a first air adjusting nut.
Preferably, a second air adjusting mechanism for adjusting the air volume in the cylinder of the drying cylinder body is further arranged in the drying cylinder body, the second air adjusting mechanism comprises a second fixed pore plate with holes, a second movable pore plate and a second driving mechanism, the second fixed pore plate is installed in the drying cylinder body, the second movable pore plate is arranged below or above the second fixed pore plate, the second driving mechanism drives the second movable pore plate to move along the second fixed pore plate, and the hole of the first movable pore plate is overlapped with the first fixed pore plate.
Preferably, the second driving mechanism includes an air adjusting connecting rod connected to the second movable orifice plate, and a second adjusting handwheel connected to the air adjusting connecting rod through a second air adjusting nut.
Preferably, the first moving orifice plate and the second moving orifice plate are provided with reinforcing ribs.
Preferably, the surface of the drying cylinder body is formed by welding an axial steel bar and a trapezoidal wave steel bar block, and the surface of the drying cylinder body is honeycomb-shaped.
Preferably, one side end of the drying cylinder body is an operation side end cover with a closed structure; and the other side of the drying cylinder body is a transmission side end cover with an open structure.
Preferably, the transmission side end cover is provided with a wind return cover.
Preferably, the cylinder surface of the drying cylinder is provided with a stainless steel net.
According to the penetrating drying cylinder provided by the invention, the wind shielding device for preventing the hot wind blown from the hot wind cover from losing from the area outside the cylinder surface where the paper surface to be dried is located is further arranged on the inner side of the cylinder surface of the drying cylinder body, so that the hot wind transmitted from the inside of the hot wind cover can only blow to the surface of the paper web and cannot lose from other places, the utilization rate of the hot wind in the hot wind cover is improved, and the efficiency of drying the paper web is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a structural cross-sectional view of a through-dryer in a preferred embodiment of the present invention;
FIG. 2 is a schematic view of a wind shield for a through-dryer in a preferred embodiment of the present invention;
FIG. 3 is a partial cross-sectional view of a through-dryer in a preferred embodiment of the present invention;
fig. 4 is a cross-sectional view of the cylinder body shell side of a throughdrying cylinder in a preferred embodiment of the invention;
fig. 5 is an external view of the cylinder body of the through-dryer in a preferred embodiment of the invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present invention are written in a progressive manner.
As shown in fig. 1 to 5, the present invention provides a penetration drying cylinder, which comprises a drying cylinder body 1 and a hot air cover 2 arranged on the drying cylinder body, wherein the drying cylinder body 1 and the hot air cover 2 form a closed space. The wind shielding device 3 is arranged on the inner side of the cylinder surface 12 of the drying cylinder body 1, and the wind shielding device 3 is used for preventing hot air blown by the hot air cover 2 from flowing away from the place outside the paper web placing area 4.
When the paper-penetrating drying cylinder works, the drying cylinder body 1 is covered by the hot air cover 2, a certain positive pressure is arranged in the hot air cover 2, a certain negative pressure is arranged in the drying cylinder body 1, a paper web to be dried is placed on the cylinder surface 12 of the drying cylinder body 1, specifically, the paper web placing area 4 of the cylinder surface 12 of the drying cylinder body 1 is arranged, and the high-temperature steam in the drying cylinder body 1 conducts heat to the cylinder surface 12 of the drying cylinder to dry the paper web. Meanwhile, the hot air in the hot air hood 2 is blown to the surface of the paper web so as to accelerate the drying speed of the paper web and increase the bulkiness of the paper, and the wind shielding device 3 arranged on the inner side of the cylinder surface 12 of the drying cylinder limits the hot air from flowing away from the area outside the paper web placing area 4, so that the utilization rate of the hot air in the hot air hood 2 is improved, and the efficiency of drying the paper web is improved. It is noted that a web placement area in this application refers to an area arranged on the cylinder surface of the drying cylinder where the web is placed. When the width of the produced paper web is not uniform, the width of the paper web placing area 4 is not uniform, and the width of the paper web placing area 4 is uniform with the width of the produced paper web.
As a preferred embodiment of the present invention, the wind shielding device 3 includes a shielding member for blocking the flow of the hot air to both sides of the paper web placing area 4, and an amplitude adjusting mechanism for controlling the movement or expansion of the shielding member. When the production width is L1, the amplitude modulation mechanism in the wind shielding device 3 drives the shielding members to move the two sides of the paper web placing area 4, namely, the position 1 shown in fig. 2; when the paper width of L2 is produced, the width of the paper web placing area 4 becomes L2 from L1, and the driving mechanism in the wind shielding device 3 drives the shielding members to be adjusted to both sides of the new paper web placing area 4, i.e., the position 2 shown in fig. 2. Because the amplitude modulation mechanism which can enable the shielding component to move according to the size of the paper web is added to the wind shielding device 3, the wind shielding device 3 can be applied to the production of the paper webs with different sizes, and therefore the application range of the wind shielding device 3 is improved. The problem of the drying web being changed and the wind deflector 3 being reassembled is avoided.
As a preferred embodiment of the present invention, the blocking member may be a left amplitude modulation stopper 311 and a right amplitude modulation stopper 312 which are respectively disposed at both sides of the web placing region. The amplitude modulation mechanism controls the left amplitude modulation block 311 and the right amplitude modulation block 312 to move relatively or oppositely. When the size of the paper web to be dried is changed, the left amplitude modulation block 311 and the right amplitude modulation block 312 are controlled to move relatively by increasing the amplitude modulation mechanism, so that the left amplitude modulation block 311 and the right amplitude modulation block 312 respectively move to two sides of the paper web to be dried, the movement of hot air blown from the hot air hood 2 from two sides of the paper web placing area 4 is limited, and the drying efficiency of the paper web is improved.
As a preferred embodiment of the invention, the amplitude modulation mechanism comprises an amplitude modulation screw rod 321 and a speed reduction motor, the speed reduction motor is connected with one end of the amplitude modulation screw rod 321, the left amplitude modulation block 311 and the right amplitude modulation block 312 are respectively connected with the amplitude modulation screw rod 321 through amplitude modulation nuts 323, and the speed reduction motor can drive the amplitude modulation screw rod 321 to control the back-to-back movement or the opposite movement of the left amplitude modulation block 311 and the right amplitude modulation block 312.
When the width between the left amplitude modulation block 311 and the right amplitude modulation block 312 is larger than or smaller than the width of the paper web, the speed reducing motor enables the amplitude modulation nut 323 on the amplitude modulation screw rod 321 to move along the axial direction of the amplitude modulation screw rod 321 through speed reduction or acceleration until the width between the left amplitude modulation block 311 and the right amplitude modulation block 312 is matched with the width of the paper web placing area 4, and the speed reducing motor stops moving. The left and right width-adjusting stoppers 311 and 312 are also stationary on both sides of the web-placing area 4, so that the hot air blown from the hot-air hood 2 is prevented from being lost from both sides of the web-placing area 4.
As a preferred embodiment of the invention, one end of the amplitude-modulated screw rod 321 is provided with a left thread, the other end of the amplitude-modulated screw rod 321 is provided with a right thread, two ends of the amplitude-modulated screw rod 321 are respectively connected with the left amplitude-modulated block 311 and the right amplitude-modulated block 312 through the amplitude-modulated nut 323, so that the left amplitude-modulated block 311 and the right amplitude-modulated block 312 are respectively fixed at two ends of the same amplitude-modulated screw rod 321 with different threads through the amplitude-modulated nut 323, when the speed-reducing motor drives the amplitude-modulated screw rod 321 to rotate, because the threads at the two ends of the amplitude-modulated screw rod 321 are opposite, the amplitude-modulated nuts 323 at the two ends of the amplitude-modulated screw rod 321 can simultaneously move relatively or oppositely along. Therefore, the two stop blocks can be driven to move simultaneously by one power mechanism, and power is saved.
As a preferred embodiment of the invention, the hot air hood 2 is divided into a wet end half hood and a dry end half hood, which are symmetrically arranged on the cylinder surface 12 of the drying cylinder. Even blowhole has been set up in hot-blast cover 2, and the setting of half cover of wet end and half cover symmetry of dry end is on hot-blast cover 2, through to letting in the hot-blast by after steam heating in half cover of wet portion and the half cover of cadre, makes the air current distribution even in whole hot-blast cover 2, and the unobstructed flow of the air of being convenient for, rethread blowhole blows to the paper web to drying speed and drying quality have been improved.
As a preferred embodiment of the present invention, the hot air hood 2 is further provided with a first air adjusting mechanism for adjusting the air quantity transferred to the drying cylinder surface 12, the first air adjusting mechanism comprises a first fixed orifice 231, a first moving orifice 232 and a first driving mechanism for driving the first moving orifice 232 to move, the first fixed orifice 231 is installed at the air blowing port of the hot air hood 2, the first moving orifice 232 with the same orifice arrangement rule as the first fixed orifice 231 is installed in a manner of being attached to the first fixed orifice 231, and when the orifices of the first fixed orifice 231 and the first moving orifice 232 are completely overlapped, the air flow of the air blowing port is the largest; when fully staggered, the vent is fully closed. The first drive mechanism drives the movement of the first moving orifice plate 232. Through the first air adjusting mechanism, the blowing amount of each area of the hot air cover penetrating through the cylinder can be adjusted in a stepless mode, and the suction amount of hot air in each area penetrating through the cylinder can also be adjusted in a stepless mode.
In a preferred embodiment of the present invention, the first driving mechanism includes an air adjusting screw 2331 connected to the first movable orifice plate 232, and a first adjusting handwheel 2333 connected to the air adjusting screw 2331 through a first air adjusting nut 2332.
When the air quantity blown by the hot air hood 2 needs to be adjusted, the air adjusting screw rod 2331 can advance and retreat like screwing a common bolt by screwing the first adjusting hand wheel 2333, and the first moving orifice plate 232 is driven to move. The ventilation amount is maximized when the orifice of the first moving orifice 232 completely coincides with the first fixed orifice 231. When fully staggered, the vent is fully closed.
As a preferred embodiment of the present invention, a second air adjusting mechanism for adjusting the air volume in the cylinder is further disposed in the drying cylinder body 1, the second air adjusting mechanism includes a second fixed orifice 111 installed in the drying cylinder, a second moving orifice 112 regularly aligned with the orifices, and a second driving mechanism for driving the moving orifice to move, the second driving mechanism includes an air adjusting connecting rod connected to the second moving orifice 112, and a second adjusting handwheel connected to the air adjusting connecting rod through a second adjusting nut 1132.
In a preferred embodiment of the present invention, the second moving aperture plate 112 is welded together with the wind adjusting link, and leads from the position of the penetrating cylinder shaft to the outside of one side of the penetrating cylinder, and the outside is designed with a rotatable second adjusting nut 1132, and the wind adjusting link matched with the second adjusting nut 1132 can move transversely. When the hole of the second movable orifice plate 112 is completely overlapped with the hole of the second fixed orifice plate 111, the ventilation amount is the maximum. When fully staggered, the vent is fully closed.
In a preferred embodiment of the present invention, the first moving orifice 232 and the second moving orifice 112 are provided with reinforcing ribs. The movable orifice plate is welded with a reinforcing rib to prevent deformation in use.
As a preferred embodiment of the invention, the cylinder surface 12 of the drying cylinder is formed by welding an axial common steel bar and a trapezoidal wave steel bar block, and the cylinder surface 12 of the drying cylinder is in a honeycomb shape. Compared with the prior drilling type, the cylinder surface 12 of the honeycomb drying cylinder is easy to manufacture by welding, has large aperture ratio and high strength and rigidity, and can effectively improve the drying efficiency and the bulkiness and softness of paper.
As a preferred embodiment of the present invention, both ends of the whole drying cylinder body 1 are respectively supported by a transmission side end cover 13 and an operation side end cover 14, wherein the operation side end cover 13 is a closed structure, the transmission side end cover 14 is an open structure, i.e. an open structure, and half shafts are connected to both end covers, and the hot air is discharged from the transmission side end cover 14 after penetrating through the half shafts.
As a preferred embodiment of the present invention, the side of the transmission side end cap 14 is provided with an air return cover 15, and the air return cover 15 can prevent the hot air blown to the transmission side end cap from flowing away, and can ensure that the hot air is delivered into the circulating air duct from the transmission side end cap 14, heated by the heating chamber and then enters the drying cylinder for recycling.
As a preferred embodiment of the invention, the cylinder surface of the drying cylinder is provided with a stainless steel mesh 16, which stainless steel mesh 16 ensures that the paper web is coated on the cylinder surface during the drying process.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A through-drying cylinder comprising a drying cylinder body (1) and a hot air hood (2) arranged on the drying cylinder body (1), characterized in that a wind shield (3) is mounted inside the cylinder surface (12) of the drying cylinder body (1), said wind shield (3) being adapted to block hot air blown by the hot air hood (2) from flowing away from a location outside the web placement area (4);
the hot air cover (2) comprises a wet end half cover and a dry end half cover, and the wet end half cover and the dry end half cover are symmetrically arranged on the cylinder surface (12) of the drying cylinder;
the hot air hood (2) is also provided with a first air adjusting mechanism for adjusting the amount of hot air transferred to the drying cylinder body (1), the first air adjusting mechanism comprises a first fixed pore plate (231) with a hole and arranged at the air blowing opening of the hot air hood (2), a first movable pore plate (232) arranged above or below the first fixed pore plate (231) and a first driving mechanism for driving the first movable pore plate (232) to move along the first fixed pore plate (231), and the hole of the first movable pore plate (232) can be superposed with the first fixed pore plate (231);
the first driving mechanism comprises an air adjusting screw rod (2331) connected with the first movable orifice plate (232), and a first adjusting hand wheel (2333) connected with the air adjusting screw rod (2331) through a first air adjusting nut (2332);
the drying cylinder body (1) is also internally provided with a second air adjusting mechanism for adjusting the air quantity in the drying cylinder body (1), the second air adjusting mechanism comprises a second fixed pore plate (111) with a hole, which is arranged in the drying cylinder body (1), a second moving pore plate (112) which is arranged below or above the second fixed pore plate (111) and a second driving mechanism for driving the second moving pore plate (112) to move along the second fixed pore plate (111), and the hole of the first moving pore plate (232) is superposed with the first fixed pore plate (231);
the second driving mechanism comprises an air adjusting connecting rod connected with the second movable pore plate (112) and a second adjusting hand wheel connected with the air adjusting connecting rod through a second air adjusting nut (1132).
2. A through-drying cylinder according to claim 1, characterized in that the wind deflector (3) comprises a shielding member for blocking the flow of hot air to both sides of the web placement area (4), and an amplitude modulation mechanism for controlling the movement or extension of the shielding member.
3. A penetrating cylinder according to claim 2, characterized in that said shielding means comprise a left amplitude modulation block (311) and a right amplitude modulation block (312) mounted on either side of the web placement area (4), respectively, said amplitude modulation mechanism driving said left amplitude modulation block (311) and said right amplitude modulation block (312) to move away from each other or towards each other.
4. A throughdrying cylinder according to claim 3, characterized in that the width-modulation mechanism comprises a width-modulation screw (321) and a reduction motor, the reduction motor is connected to one end of the width-modulation screw (321), the left width-modulation block (311) and the right width-modulation block (312) are respectively connected to the width-modulation screw (321) via a width-modulation nut (323), and the reduction motor is used for driving the width-modulation screw (321) to move the left width-modulation block (311) and the right width-modulation block (312) away from each other or towards each other.
5. A penetrating cylinder according to claim 4, characterized in that said amplitude-modulated lead screw (321) has a left thread at one end and a right thread at the other end, both ends of said amplitude-modulated lead screw (321) being connected to a left amplitude-modulated stop (311) and a right amplitude-modulated stop (312), respectively, by means of an amplitude-modulated nut (323).
6. A penetrating dryer according to claim 1, said first moving foraminous plate (232), said second moving foraminous plate (112) being provided with reinforcing ribs.
7. Penetrating dryer cylinder according to claim 1, the dryer body (1) shell surface (12) consisting of a block weld of axial steel bars and trapezoidal wave steel bars, the shell surface (12) of the dryer body (1) presenting a honeycomb shape.
8. Penetration cylinder according to claim 1, one side end of the cylinder body (1) being an operational side end cover (13) of a closed structure; the other side of the drying cylinder body (1) is a transmission side end cover (14) with an open structure.
9. The through-dryer according to claim 8, said drive side end-cap (14) being provided with a return hood (15).
10. A throughdrying cylinder according to claim 1, the cylinder shell surface (12) being provided with a stainless steel mesh (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810799252.3A CN108867141B (en) | 2018-07-19 | 2018-07-19 | Penetrating drying cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810799252.3A CN108867141B (en) | 2018-07-19 | 2018-07-19 | Penetrating drying cylinder |
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| Publication Number | Publication Date |
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| CN108867141A CN108867141A (en) | 2018-11-23 |
| CN108867141B true CN108867141B (en) | 2020-12-22 |
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| CN201810799252.3A Active CN108867141B (en) | 2018-07-19 | 2018-07-19 | Penetrating drying cylinder |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11608595B2 (en) * | 2020-10-14 | 2023-03-21 | Valmet, Inc. | Through-air apparatus with adjustable deckle |
| CN115029949A (en) * | 2022-07-07 | 2022-09-09 | 山东海天造纸机械有限公司 | Heated air circulation formula drying equipment for air penetration paper machine |
| CN117403463B (en) * | 2023-10-21 | 2024-05-10 | 维达护理用品(广东)有限公司 | Low-wrinkle paper towel production device and method based on energy-saving hot air penetrating drying technology |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT383629B (en) * | 1984-07-25 | 1987-07-27 | Andritz Ag Maschf | Apparatus for drying material webs, especially paper webs |
| FI104000B1 (en) * | 1998-04-03 | 1999-10-29 | Valmet Corp | Inflow system fitted around a roll, cylinder or the like in the drying section of a papermaking machine or the like |
| US7716850B2 (en) * | 2006-05-03 | 2010-05-18 | Georgia-Pacific Consumer Products Lp | Energy-efficient yankee dryer hood system |
| CN102776798B (en) * | 2012-07-30 | 2015-02-04 | 湖南正大轻科机械有限公司 | Mixed hot air drying cylinder |
| CN202718000U (en) * | 2012-09-01 | 2013-02-06 | 潍坊凯信机械有限公司 | Hot air steam hood |
| CN103498380A (en) * | 2013-10-30 | 2014-01-08 | 恒天重工股份有限公司 | Drying device applied to producing high-breathability paper products in papermaking industry |
| FR3033875B1 (en) * | 2015-03-17 | 2021-06-18 | Andritz Perfojet Sas | METAL DRUM, ESPECIALLY FOR A DRYER |
| CN106283815B (en) * | 2015-05-29 | 2020-04-10 | 金红叶纸业集团有限公司 | Drying system and papermaking method thereof |
| CN106480626B (en) * | 2016-12-02 | 2018-06-22 | 安徽佶龙机械有限公司 | Drying chamber Bidirectional amplitude-modulation device |
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2018
- 2018-07-19 CN CN201810799252.3A patent/CN108867141B/en active Active
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