CN114395936B - Hot air hood for paper machine and installation method thereof - Google Patents
Hot air hood for paper machine and installation method thereof Download PDFInfo
- Publication number
- CN114395936B CN114395936B CN202210131618.6A CN202210131618A CN114395936B CN 114395936 B CN114395936 B CN 114395936B CN 202210131618 A CN202210131618 A CN 202210131618A CN 114395936 B CN114395936 B CN 114395936B
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- pipe
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- hood
- shell
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000009833 condensation Methods 0.000 claims description 25
- 230000005494 condensation Effects 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 description 14
- 238000005265 energy consumption Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- 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
- D21F7/00—Other details of machines for making continuous webs of paper
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Abstract
The invention relates to the field of paper machine equipment, and particularly discloses a hot air hood for a paper machine, which comprises a hood body and a condensing part, wherein the condensing part is respectively provided with a first pipe body and a second pipe body, the first pipe body is connected with one end of a heat exchange pipe, one end of the second pipe body is connected with the other end of the heat exchange pipe, the bottom end of one side of the condensing part is provided with a water collecting tank, and the bottom of the water collecting tank is connected with a water drain pipe, and the installation method of the hot air hood comprises the following steps: s1, installing and fixing a side plate at the bottom end of a cover body; s2, fixing the side plates on the mounting frame; s3, installing and fixing condensing parts at two ends of the cover body; s4, connecting the connecting pipe, the first air inlet pipe, the second shell, the first pipe body, the heat exchange pipe and the second pipe body, wherein the condensing part can condense water vapor into liquid, and then the liquid flows into the water collecting tank from the wall, so that water generated by hot baking is collected, the influence of the water vapor on the papermaking production process is avoided, and the quality of papermaking production is improved.
Description
Technical Field
The invention relates to the technical field of paper machine equipment, in particular to a hot air hood for a paper machine and an installation method thereof.
Background
The paper machine is a generic term for a complete set of equipment that links the sections of the pulp forming web, including headbox, wire section, press section, dryer section, calender, reel and drive section, and auxiliary systems such as steam, water, vacuum, lubrication, heat recovery, etc. The cylinder mould and fourdrinier wire are used as the wire part, the press part is composed of press roll and papermaking felt, and the drying part is composed of one or several drying cylinders. The hot air hood is arranged at the drying part, the air passages are distributed along the inner wall of the hot air hood shell, and hot air is sprayed out through the spray head to realize drying. But in the drying process, water is separated from paper to generate water vapor, the humidity of a workshop is increased, the increased water vapor has a great influence on the paper making of the household paper, the normal curling and rewinding working sections of the household paper can be influenced, more paper breakage and reduced quality of finished products are caused, and the higher the speed of a paper machine is, the more serious the water vapor is generated.
Disclosure of Invention
The invention aims to solve the defect that the drying water vapor in the prior art affects the paper making of household paper, and provides a hot air hood for a paper machine and an installation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a hot air hood for paper machine, includes the cover body and sets up the condensation part at the both ends of cover body, be provided with first cavity in the cover body, the bottom of cover body be provided with the shower nozzle of first cavity intercommunication, the top of cover body be provided with the first intake pipe of first cavity intercommunication, be provided with first casing in the first intake pipe, be provided with the second cavity in the first casing, the inner wall of second cavity is provided with the heat exchange tube, the condensation part adopts metal material, be provided with the third cavity in the condensation part, be provided with heat conduction liquid in the third cavity, the top of third cavity be provided with first body and second body respectively, first body with the one end of heat exchange tube is connected, the one end of second body with the other end of heat exchange tube is connected, the condensation part is close to the bottom of one side of cover body is provided with the water catch bowl, the water tank bottom of water catch bowl is connected with the drain pipe.
Preferably, the both sides bottom of the cover body is connected with the curb plate, the curb plate can be fixed with the mounting bracket installation.
Preferably, the inner wall of the cover body is arc-shaped, the shape of the first cavity is arc-shaped consistent with the shape of the inner wall of the cover body, the number of the first cavities is multiple, and the multiple first cavities are uniformly distributed along the length direction of the cover body.
Preferably, the number of the spray heads is plural, and the plurality of spray heads are uniformly distributed along the width direction of the cover body.
Preferably, a second shell is arranged at the top end of the cover body, and a heating device is arranged in the second shell.
Preferably, the top of the cover body is provided with a first air inlet pipe, the number of the first air inlet pipes is the same as that of the first cavities, each first air inlet pipe corresponds to one first cavity, the top of the first air inlet pipe is connected with a connecting pipe, and one end of the connecting pipe is communicated with the inside of the second shell.
Preferably, the first shell is arranged at the top end of the second shell, the bottom end of the second cavity is communicated with the inside of the second shell, a second air inlet pipe is arranged at the top end of the first shell, and one end of the second air inlet pipe is connected with a feed pipe.
Preferably, one end of the first pipe body is located at the top end of the condensation part, one end of the second pipe body is located at the bottom end of the condensation part, and the heat-conducting liquid located in the third cavity flows from the second pipe body to the first pipe body.
Preferably, the top of the cover body is provided with a first connecting piece, one side of the first connecting piece is provided with a mounting hole, the top of the first connecting piece is provided with a first fixing hole, the top of the condensation part is provided with a second connecting piece which can be inserted into the mounting hole, the top of the second connecting piece is provided with a second fixing hole, and fixing bolts are connected into the first fixing hole and the second fixing hole.
The invention also provides a method for installing the hot air hood for the paper machine, which comprises the following steps of:
s1, after a side plate with a corresponding height is selected, the side plate is installed and fixed at the bottom end of the cover body;
s2, fixing the side plates on the mounting frame;
s3, inserting a second connecting piece on the condensing part into the first connecting piece at the top end of the cover body, and installing and fixing the condensing part at two ends of the cover body;
s4, connecting one end of a connecting pipe with a first air inlet pipe, connecting the other end of the connecting pipe with a second shell, connecting one end of a first pipe body with one end of a heat exchange pipe, connecting one end of a second pipe body with the other end of the heat exchange pipe, and connecting one end of a drain pipe with a collecting container.
The beneficial effects of the invention are as follows:
1. in the process of drying finished paper by hot gas, the heat is transferred into the heat conduction liquid after the vapor with heat meets the condensing parts at the two ends of the cover body, the vapor can be condensed into liquid, and then the liquid flows into the water collecting tank, so that the water generated by the hot drying is collected, the normal humidity in a workshop is maintained, the influence of the vapor on the papermaking production process is avoided, and the quality of the papermaking production is improved.
2. After the heat conducting liquid absorbs the heat of the vapor at the top end of the cover body, the heat can be transferred into the heat exchange tube in the first shell body, the gas to be introduced into the second shell body is preheated, the heat energy in the drying process is effectively utilized, and the energy consumption of the heating device is reduced.
Drawings
FIG. 1 is a perspective view of a hot air hood for a paper machine according to the present invention;
FIG. 2 is a perspective view of a hot air hood for a paper machine of the type shown in FIG. 1 from another perspective;
FIG. 3 is a top view of a hot air hood for the papermaking machine shown in FIG. 1;
FIG. 4 is a cross-sectional view at A-A in FIG. 3;
FIG. 5 is a cross-sectional view at B-B in FIG. 3;
FIG. 6 is a cross-sectional view taken at C-C of FIG. 3;
fig. 7 is a block diagram of a method for installing a hot air hood for a paper machine according to the present invention.
In the figure: the heat exchange device comprises a side plate 1, a cover body 2, a first cavity 21, a first air inlet pipe 3, a connecting pipe 4, a second shell 5, a second air inlet pipe 6, a first shell 7, a second cavity 71, a second pipe 8, a first connecting piece 9, a first pipe 10, a spray head 11, a drain pipe 12, a condensing part 13, a second connecting piece 131, a third cavity 132, a water collecting tank 14, a heating device 15 and a heat exchange pipe 16.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-6, a hot air hood for a paper machine includes a hood body 2 and a condensation portion 13 disposed at two ends of the hood body 2, a first cavity 21 is disposed in the hood body 2, a spray head 11 communicated with the first cavity 21 is disposed at a bottom end of the hood body 2, a first air inlet pipe 3 communicated with the first cavity 21 is disposed at a top end of the hood body 2, a first housing 7 is disposed on the first air inlet pipe 3, a second cavity 71 is disposed in the first housing 7, a heat exchange tube 16 is disposed on an inner wall of the second cavity 71, the condensation portion 13 is made of a metal material, in this embodiment, the condensation portion 13 is made of an aluminum alloy, a third cavity 132 is disposed in the condensation portion 13, a heat conducting liquid is disposed in the third cavity 132, in this embodiment, a first pipe 10 and a second pipe 8 are disposed at a top end of the third cavity 132 respectively, the first pipe 10 and the second pipe 16 are connected to one end of the water collection tube 14, which is close to one end of the water collection tube 14 is connected to one end of the condensation tube 14, and the other end of the water collection tube 14 is connected to the bottom end of the first drain tube 14. The shower nozzle 11 on the hot-blast gas hood is connected with steam for the steam can be followed shower nozzle 11 blowout, and steam circulates in the cover body 2, can carry out drying treatment to the finished paper, evaporates out the moisture in the finished paper, and in the condensing part 13 that has the hot vapor to meet cover body 2 both ends, with heat transfer to the heat conduction liquid, the vapor condenses into liquid back wall flow to water catch bowl 14 simultaneously, and the heat conduction liquid can preheat the gas in the first casing 7, reduces the energy loss that forms the steam.
The side plates 1 are connected to the bottom ends of the two sides of the cover body 2, the side plates 1 are used for being fixedly installed with a mounting rack (not shown), the side plates 1 are fixedly connected with the mounting rack through bolts, the cover body 2 can be adjusted to converge the volume of hot air through the arrangement of the side plates 1, the higher the height of the side plates 1 is, the more the hot air gathered in the cover body 2 is, the more and the uniform the hot air circulation in the cover body 2 is, and the more the energy loss is, in this embodiment, the higher the side plates 1 is 1-1.5 m after the height of the side plates 1 is too high to ensure the temperature in the cover body 2. The inner wall of the cover body 2 is arc-shaped, so that the resistance to the circulation of hot air in the cover body 2 can be reduced, and meanwhile, the hot air can be circulated fully and uniformly. The shape of the first cavities 21 is an arc shape consistent with the shape of the inner wall of the cover body 2, the number of the first cavities 21 is plural, the plurality of first cavities 21 are uniformly distributed along the length direction of the cover body 2, in this embodiment, the number of the first cavities 21 is 13, it can be understood that in other embodiments not shown, the number of the first cavities 21 can be set to other numbers according to the length of the cover body 2. The number of the spray heads 11 is plural, and the plurality of spray heads 11 are uniformly distributed along the width direction of the cover body 2, in this embodiment, the number of the spray heads 11 is 11, and it can be understood that in other embodiments not shown, the number of the spray heads 11 may be set to other numbers according to the width of the cover body 2.
The top of the cover body 2 is provided with a second shell body 5, a heating device 15 is arranged in the second shell body 5, and the heating device 15 is used for heating gas entering the first cavity 21, so that finished paper can be dried conveniently. The heating device 15 may be a conventional heating device, in which case the heating device 15 is a resistance wire heater, and in other embodiments not shown, the heating device 15 may be a boiler. The top of the cover body 2 is provided with a first air inlet pipe 3, the number of the first air inlet pipes 3 is the same as that of the first cavities 21, each first air inlet pipe 3 corresponds to one first cavity 21, the first air inlet pipe 3 is used for guiding hot air into the corresponding first cavity 21, the top of the first air inlet pipe 3 is connected with a connecting pipe 4, one end of the connecting pipe 4 is communicated with the inside of the second shell body 5, so that the hot air heated by the heating device 15 is led into the first cavity 21 and finally is output through the spray head 11. The first casing 7 is disposed at the top end of the second casing 5, the bottom end of the second cavity 71 is communicated with the inside of the second casing 5, the top end of the first casing 7 is provided with a second air inlet pipe 6, one end of the second air inlet pipe 6 is connected with a feeding pipe (not shown), and the second air inlet pipe 6 is used for guiding gas in the feeding pipe through pipeline pressure.
The second cavity 71 is cylindrical in shape, and the heat exchange tube 16 is circumferentially disposed on an inner wall of the second cavity 71. The pump body is disposed at one end of the heat exchange tube 16, and is capable of flowing the heat exchange tube 16 and the heat conducting liquid in the first tube body 10, the second tube body 8, and the third cavity 132 connected to the heat exchange tube 16, and flowing the heat conducting liquid in the third cavity 132, which absorbs the heat in the cover 2, into the first housing 7, so as to preheat the gas to be introduced into the second housing 5 and heated by the heating device 15. It should be noted that, the height of the first housing 7 is 50-150 cm, if the height of the first housing 7 is too low, the gas cannot be effectively preheated after passing through the inside of the first housing 7, and if the height of the first housing 7 is too high, on one hand, the gas will have heat loss after being heated, the preheating effect is poor, on the other hand, the contact area between the first housing 7 and the outside is increased, and the heat loss is increased.
It should be noted that the side wall of the condensation portion 13 and the outer wall of one end far away from the cover 2 are all wrapped with heat insulation materials, and the outer walls of the first pipe body 10, the second pipe body 8 and the first casing 7 are all wrapped with heat insulation materials. A step of
One end of the first pipe body 10 is located at the top end of the condensation portion 13, one end of the second pipe body 8 is located at the bottom end of the condensation portion 13, and the heat-conducting liquid located in the third cavity 132 flows from the second pipe body 8 to the first pipe body 10.
The top of the cover body 2 is provided with a first connecting piece 9, one side of the first connecting piece 9 is provided with a mounting hole, the top of the first connecting piece 9 is provided with a first fixing hole, the top of the condensation part 13 is provided with a second connecting piece 131 which can be inserted into the mounting hole, the top of the second connecting piece 131 is provided with a second fixing hole, and fixing bolts are connected into the first fixing hole and the second fixing hole.
The invention also provides a method for installing the hot air hood for the paper machine, which comprises the following steps of:
s1, after a side plate 1 with a corresponding height is selected, the side plate 1 is installed and fixed at the bottom end of a cover body 2;
s2, fixing the side plate 1 on the mounting frame;
s3, inserting the second connecting piece 131 on the condensing part 13 into the first connecting piece 9 at the top end of the cover body 2, and installing and fixing the condensing part 13 at two ends of the cover body 2;
s4, one end of the connecting pipe 4 is connected with the first air inlet pipe 3, the other end of the connecting pipe 4 is connected with the second shell 5, one end of the first pipe body 10 is connected with one end of the heat exchange pipe 16, one end of the second pipe body 8 is connected with the other end of the heat exchange pipe 16, and one end of the drain pipe 12 is connected with the collecting container.
In this embodiment, after the gas enters the second air inlet pipe 6 through the pipe pressure, the gas enters the first housing 7, and the first housing 7 cannot preheat the gas at this time, the gas continues to flow into the second housing 5 and is heated by the heating device 15 in the second housing 5 to form hot gas, the hot gas enters the first cavity 21 in the housing 2 through the connecting pipe 4 and the first air inlet pipe 3 and is sprayed out through the spray nozzle 11, the hot gas flows at the bottom end of the housing 2, and the finished paper at the bottom end of the housing 2 is dried. At this time, the hot air is partially gathered at the top end of the cover body 2, the water vapor separated from the drying of the finished paper is gathered at the top end of the cover body 2 and gradually moves towards the two ends of the cover body 2, when the water vapor encounters the condensation part 13, the heat of the water vapor is transferred to the condensation part 13 with lower temperature, the water vapor is condensed on the surface of the condensation part 13 near one end of the cover body 2, the heat of the water vapor is transferred into the heat exchange liquid in the third cavity 132 of the condensation part 13, and meanwhile, the water condensed wall heated and dried from the finished paper flows into the water collecting tank 14, and finally is discharged and collected from the drain pipe 12. After the pump body at one end of the heat exchange tube 16 works, the heat conducting liquid can flow, the heat conducting liquid with heat in the third cavity 132 moves into the first shell 7, the gas to be introduced into the second shell 5 is preheated, and the energy consumption of the heating device 15 is reduced.
In the process of drying finished paper by hot gas, the heat is transferred into the heat conduction liquid after the vapor with heat meets the condensing parts 13 at the two ends of the cover body 2, the vapor can be condensed into liquid, and then the liquid flows into the water collecting tank 14, so that the water generated by the hot drying is collected, the normal humidity in a workshop is maintained, the influence of the vapor on the papermaking production process is avoided, and the quality of the papermaking production is improved. After the heat of the vapor at the top end of the cover body 2 is absorbed by the heat conducting liquid, the heat can be transferred into the heat exchange tube 16 in the first shell 7 to preheat the gas which is about to enter the second shell 5, so that the heat energy in the drying process is effectively utilized, and the energy consumption of the heating device 15 is reduced.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The hot air hood for the paper machine is characterized by comprising a hood body and condensation parts arranged at two ends of the hood body, wherein a first cavity is arranged in the hood body, a spray head communicated with the first cavity is arranged at the bottom end of the hood body, a first air inlet pipe communicated with the first cavity is arranged at the top end of the hood body, a first shell is arranged on the first air inlet pipe, a second cavity is arranged in the first shell, a heat exchange pipe is arranged on the inner wall of the second cavity, the condensation parts are made of metal materials, a third cavity is arranged in the condensation parts, heat conducting liquid is arranged in the third cavity, a first pipe body and a second pipe body are respectively arranged at the top end of the third cavity, the first pipe body is connected with one end of the heat exchange pipe, one end of the second pipe body is connected with the other end of the heat exchange pipe, a water collecting tank is arranged at the bottom end, close to one side of the hood body, and a drain pipe is connected with the bottom of the water collecting tank; the bottom ends of two sides of the cover body are connected with side plates, and the side plates can be fixedly installed with the installation frame; the inner wall of the cover body is arc-shaped, the shape of the first cavity is arc-shaped consistent with the shape of the inner wall of the cover body, the number of the first cavities is multiple, and the multiple first cavities are uniformly distributed along the length direction of the cover body; the top end of the cover body is provided with a second shell, and a heating device is arranged in the second shell; the top end of the cover body is provided with first air inlet pipes, the number of the first air inlet pipes is the same as that of the first cavities, each first air inlet pipe corresponds to one first cavity, the top end of each first air inlet pipe is connected with a connecting pipe, and one end of each connecting pipe is communicated with the inside of the second shell; the first shell is arranged at the top end of the second shell, the bottom end of the second cavity is communicated with the inside of the second shell, a second air inlet pipe is arranged at the top end of the first shell, and one end of the second air inlet pipe is connected with a feed pipe; one end of the first pipe body is located at the top end of the condensation part, one end of the second pipe body is located at the bottom end of the condensation part, and the heat conduction liquid located in the third cavity flows from the second pipe body to the first pipe body.
2. The air hood for a paper machine according to claim 1, wherein the number of the shower nozzles is plural, and the shower nozzles are uniformly distributed in the width direction of the hood body.
3. The air hood for a paper machine according to claim 1, wherein a first connecting member is provided at a top end of the hood body, a mounting hole is provided at one side of the first connecting member, a first fixing hole is provided at a top end of the first connecting member, a second connecting member capable of being inserted into the mounting hole is provided at a top end of the condensing portion, a second fixing hole is provided at a top end of the second connecting member, and fixing bolts are connected to the first fixing hole and the second fixing hole.
4. A method of installing a hot air hood for a paper machine as claimed in any one of claims 1 to 3, comprising the steps of:
s1, after a side plate with a corresponding height is selected, the side plate is installed and fixed at the bottom end of the cover body;
s2, fixing the side plates on the mounting frame;
s3, inserting a second connecting piece on the condensing part into the first connecting piece at the top end of the cover body, and installing and fixing the condensing part at two ends of the cover body;
s4, connecting one end of a connecting pipe with a first air inlet pipe, connecting the other end of the connecting pipe with a second shell, connecting one end of a first pipe body with one end of a heat exchange pipe, connecting one end of a second pipe body with the other end of the heat exchange pipe, and connecting one end of a drain pipe with a collecting container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210131618.6A CN114395936B (en) | 2022-02-14 | 2022-02-14 | Hot air hood for paper machine and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210131618.6A CN114395936B (en) | 2022-02-14 | 2022-02-14 | Hot air hood for paper machine and installation method thereof |
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| CN114395936A CN114395936A (en) | 2022-04-26 |
| CN114395936B true CN114395936B (en) | 2024-03-15 |
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| CN202210131618.6A Active CN114395936B (en) | 2022-02-14 | 2022-02-14 | Hot air hood for paper machine and installation method thereof |
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| CN208668162U (en) * | 2018-06-29 | 2019-03-29 | 重庆理文卫生用纸制造有限公司 | A kind of energy-efficient paper machine steam gas hood recovery system |
| CN208668159U (en) * | 2018-06-29 | 2019-03-29 | 重庆理文卫生用纸制造有限公司 | A kind of energy-efficient toilet paper machine gas hood hot-air system |
| CN208981005U (en) * | 2018-10-24 | 2019-06-14 | 湖南三匠人科技有限公司 | A kind of paper web drying machine |
| CN209384016U (en) * | 2019-01-18 | 2019-09-13 | 潍坊杰高非织材料科技有限公司 | Drying cylinder air bells cap energy-saving equipment |
| CN210458763U (en) * | 2019-06-21 | 2020-05-05 | 江苏鑫辰逸机械设备有限公司 | Paper machine drying cylinder cover with heater |
| CN215329026U (en) * | 2021-03-25 | 2021-12-28 | 金凤凰纸业(孝感)有限公司 | Waste heat recovery utilizes device in gas hood |
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