CN109722937A - A kind of Dryer Section of Paper Machine vaccum dewatering system - Google Patents
A kind of Dryer Section of Paper Machine vaccum dewatering system Download PDFInfo
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- CN109722937A CN109722937A CN201811602661.6A CN201811602661A CN109722937A CN 109722937 A CN109722937 A CN 109722937A CN 201811602661 A CN201811602661 A CN 201811602661A CN 109722937 A CN109722937 A CN 109722937A
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- drying cylinder
- flat box
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- suction flat
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Abstract
A kind of Dryer Section of Paper Machine vaccum dewatering system, it include: felt, live-roller, drying cylinder, steam jet heat pump, suction flat box, vacuum pump, drainpipe, optical sensor and controller, the present invention removes the squeeze roll before drying cylinder, add suction flat box, it is able to solve conventional paper machines felt easy mucilage after squeezing, cleannes are inadequate, the impacted problem of water penetration, the present invention is carried out automatically controlling using steam jet heat pump with hop controller, solve the problem of the easily wet easy chip of wrinkle of paper that traditional handicraft occurs.
Description
Technical field
The present invention relates to paper industry, specially a kind of Dryer Section of Paper Machine vaccum dewatering system.
Background technique
Dryer Section of Paper Machine in the paper making process, removes the moisture of l Water Paper mainly after press section, at the same time, improves paper
Intensity, enhance paper smoothness and complete paper sizing effect.The mass dryness fraction that l Water Paper goes out press section generally only has 30% ~ 40%,
In the new-type paper machine of unipress, mass dryness fraction also only reaches 40% ~ 50%, it is therefore desirable to be evaporated moisture by means of drying cylinder, tradition
Dryer Section of Paper Machine is made of several drying cylinders, and the number of drying cylinder and arrangement are decided by the factors such as paper kind and speed produced.
Existing paper machine majority is dehydrated before felt enters drying cylinder using double roller self weight pressurised form, but is passed through and squeezed
The easy mucilage of felt after pressure, cleannes are inadequate, and water penetration is affected, and reflection is controlled to at paper, the easily wet wrinkle of paper or chip,
It is more to lose paper, paper forming rate is low, and entire production scene piles with paper everywhere, and by cloth of moulting, carrying roller, wash journey maintains a period of time raw
It produces, same problem occurs repeatedly, and production efficiency is low, and post operation is complicated.
In addition to water in addition to conventionally employed squeeze roll, applicant retrieves the document about paper machine vaccum dewatering:
Chinese patent, a kind of title: energy-efficient drying section of paper machine；Application number: 201721170764.0；The applying date: 2017-
09-13；Abstract: the utility model discloses a kind of drying section, especially a kind of energy-efficient drying section of paper machine.The utility model
It is wrapped in the cylinder group cover of cylinder group including cylinder group and outside, the cylinder group includes the rotatable drying cylinder of several cylindrical structures,
Heating tube is surrounded by outside the cylinder group cover；It further include air pump, the air pump is connected to each drying cylinder by tracheae, and the tracheae passes through
Drying cylinder is protruded into one end of drying cylinder and tracheae protrude into drying cylinder part and drying cylinder it is coaxial, the place that tracheae is connect with drying cylinder is provided with axis
It holds, dehydrater is provided on tracheae.The utility model heat pipe heats entire cylinder group cover, heats compared to using drying cylinder
To dry so that paper fitting drying cylinder with not to be bonded temperature difference between drying cylinder not too big, to prevent paper from disconnecting.
As can be seen that water removal is studied before only a small number of producers enter drying cylinder for felt at present, above
Improving is also that vaccum dewatering device is added in cylinder section, increases the effect of drying, but is entered before drying cylinder without solving felt
The problems such as out-of-flatness, mucilage, so the paper machine that can be improved is also extremely limited at paper efficiency.
Summary of the invention
Replace traditional squeeze roll using suction flat box the object of the present invention is to provide a kind of, solve conventional paper machines felt into
Enter before drying cylinder through the easy mucilage of felt after extruding, cleannes are inadequate, and water penetration is impacted to cause paper machine at paper low efficiency, when shutdown
Between too long problem.
In order to achieve the above objectives, technical scheme is as follows:
The Dryer Section of Paper Machine vaccum dewatering system, comprising: felt, live-roller, drying cylinder, steam jet heat pump, vacuum are inhaled
A live-roller is respectively installed in water tank, vacuum pump, drainpipe, optical sensor and controller, the rack two sides, in two live-rollers
Between 2~4 drying cylinders are installed side by side, drying cylinder is connect with steam jet heat pump, and vacuum dehydration is equipped between drying cylinder and live-roller
Case, suction flat box are controlled to a vacuum pump, and suction flat box bottom is equipped with drainpipe, and felt is loaded to coat on two live-rollers and be passed
Dynamic roller, suction flat box and drying cylinder, optical sensor are mounted on the felt top before suction flat box, and controller is mounted on rack
On, controller exists with optical sensor and steam jet heat pump and vacuum pump to be electrically connected.
The reason of providing hot steam using steam jet heat pump for drying cylinder:
The working principle of steam jet heat pump is using the energy difference before and after steam pressure-reducing as power, when high steam passes through nozzle
High-speed flow is generated, generates low-pressure area in nozzle exit, in this region by low-pressure steam inhalation device, high steam is expanding
While compression and low pressure steam, the grade of low-pressure steam is improved with the abundant pressure of high steam, is then carried out well by mixing chamber
Mixing, mixed steam pass through the diffusion room recovered part pressure loss again, supply heat user after reaching the steam pressure of requirement
It uses.Different structure designs can be carried out to equipment according to the parameter of high and low pressure steam, obtains the steaming of various pressure ratings
Vapour meets the requirement of different heat users.By steam jet heat pump suck low-pressure steam either release exhaust steam,
It is also possible to the flash steam of condensed water generation, so that low enthalpy thermal energy is fully used, achieve the purpose that energy saving.Steam injection
The fractional energy savings of formula heat pump can achieve 35% or so, have good practicability.
The reason of being removed water using negative pressure of vacuum:
Conventional paper machine using double roller be self-possessed pressurised form, into drying cylinder before be dehydrated, through the easy mucilage of felt after extruding, cleannes
Not enough, water penetration receives influence, causes paper forming rate low, and production efficiency decline, the present invention utilizes and adds vacuum pump and vacuum dehydration
Case, the adjustable negative pressure of negative pressure of vacuum change vacuum pump power according to felt actual conditions, and suction flat box does not have with felt
The problems such as directly contacting, not will cause felt fold.
The reason of selecting optical sensor:
Optical sensor typically refers to the sensitive light energy by ultraviolet light to infrared light of energy, and light energy is converted into the device of electric signal
Part carries out judging that whether smooth felt surface is clean using the light between sensor, if felt surface is there are more slurry or not
When smooth, the light between sensor can be blocked, and send an electrical signal to controller at this time, and controller makes corresponding shutdown or adjustment
Operation.
Working principle:
Felt drives by the live-roller of rack two sides, felt by optical sensor detect whether it is smooth, clean after controller control
Vacuum pump startup processed, suction flat box negative pressure siphon away felt institute band moisture, the water siphoned away by suction flat box bottom drainpipe
Discharge, the felt after suction flat box removes water successively pass through each drying cylinder, and the hot steam of drying cylinder is by steam jet heat pump
It provides, low-pressure steam returns to steam jet heat pump after drying cylinder discharge, the hot gas and power absorbed with steam jet heat pump
Steam, which re-mixes to obtain mixed vapour, to be come back to drying cylinder and recycles.
Advantages of the present invention:
(1) present invention replaces traditional squeeze roll using suction flat box, and the water separation capability of suction flat box is controllable and soaking effect
It is good, since there is no extrusion process, therefore felt be not in cleannes not enough, mucilage the problem of.
(2) present invention uses steam jet heat pump to provide heat source for drying cylinder, and steam jet heat pump steam stable is controllable,
Simultaneously can secondary use low-pressure steam, be added controller to heat pump carry out Self-tuning System adjusting, avoid the occurrence of wet wrinkle, chip etc. is asked
Topic.
(3) conventional paper machines need more than one squeeze roll to be removed water, and the present invention replaces squeeze roll using suction flat box
Equipment volume can be greatly decreased, and be equipped with optical sensor and guarantee that felt any surface finish is smooth, failure rate is reduced, when reducing shutdown
Between, hence it is evident that paper machine is improved into paper efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the Dryer Section of Paper Machine vaccum dewatering system；
It is as follows that meaning is respectively identified in figure:
1- felt；2- live-roller；3- drying cylinder；4- steam jet heat pump；5- suction flat box；6- vacuum pump；7- drainpipe；8-
Optical sensor；9- controller.
Specific embodiment
The Dryer Section of Paper Machine vaccum dewatering system, comprising: felt 1, live-roller 2, drying cylinder 3, steam jet heat pump 4,
A live-roller 2 is respectively installed in suction flat box 5, vacuum pump 6, drainpipe 7, optical sensor 8 and controller 9, the rack two sides,
2~4 drying cylinders 3 of installation, drying cylinder 3 are connect with steam jet heat pump 4 side by side among two live-rollers 2, drying cylinder 3 and live-roller 2
Between suction flat box 5 is installed, suction flat box 5 is connect with vacuum pump 6,5 bottom of suction flat box be equipped with drainpipe 7, hair
Cloth 1 is loaded on two live-rollers 2, and coats live-roller 2, suction flat box 5 and drying cylinder 3, and optical sensor 8 is mounted on vacuum suction
1 top of felt before water tank 5, controller 9 are mounted on the rack, controller 9 and optical sensor 8 and steam jet heat pump 4
Exist with vacuum pump 6 and is electrically connected.
Felt 1 drives by the live-roller 2 of rack two sides, felt 1 by optical sensor 8 detect whether it is smooth, clean after
Controller 9 controls vacuum pump 6 and starts, and 5 negative pressure of suction flat box siphons away 1 institute's band moisture of felt, and the water siphoned away is by suction flat box 5
The drainpipe 7 of bottom is discharged, and the felt 1 after the water removal of suction flat box 5 successively passes through each drying cylinder 3, the hot steam of drying cylinder 3
It is provided by steam jet heat pump 4, low-pressure steam returns to steam jet heat pump 4 after the discharge of drying cylinder 3, with steam-sprayed heat
The hot gas and power steam that pump 4 absorbs, which re-mix to obtain mixed vapour, to be come back to drying cylinder 3 and recycles.
Claims (1)
1. a kind of Dryer Section of Paper Machine vaccum dewatering system characterized by comprising felt (1), drying cylinder (3), steams live-roller (2)
Vapour jet type heat pump (4), suction flat box (5), vacuum pump (6), drainpipe (7), optical sensor (8) and controller (9), it is described
A live-roller (2) is respectively installed in rack two sides, intermediate 2~4 drying cylinders (3) of installation side by side of two live-rollers (2), drying cylinder (3) with
Steam jet heat pump (4) connection, is equipped with suction flat box (5), suction flat box (5) between drying cylinder (3) and live-roller (2)
It being connect with vacuum pump (6), suction flat box (5) bottom is equipped with drainpipe (7), and felt (1) is loaded on two live-rollers (2),
And live-roller (2), suction flat box (5) and drying cylinder (3) are coated, optical sensor (8) is mounted on the hair before suction flat box (5)
Above cloth (1), controller (9) is mounted on the rack, controller (9) and optical sensor (8) and steam jet heat pump (4) and very
There is electric connection in sky pump (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602661.6A CN109722937A (en) | 2018-12-26 | 2018-12-26 | A kind of Dryer Section of Paper Machine vaccum dewatering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602661.6A CN109722937A (en) | 2018-12-26 | 2018-12-26 | A kind of Dryer Section of Paper Machine vaccum dewatering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109722937A true CN109722937A (en) | 2019-05-07 |
Family
ID=66297276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811602661.6A Pending CN109722937A (en) | 2018-12-26 | 2018-12-26 | A kind of Dryer Section of Paper Machine vaccum dewatering system |
Country Status (1)
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| CN (1) | CN109722937A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451064A (en) * | 1999-12-16 | 2003-10-22 | 梅特索·佩珀·卡尔斯塔德公司 | An apparatus and associated method for drying a wet web of paper |
| US20070028481A1 (en) * | 2005-08-05 | 2007-02-08 | Daniel Gronych | Apparatus for dewatering a fibrous web |
| CN101896810A (en) * | 2007-10-11 | 2010-11-24 | 霍尼韦尔阿斯卡公司 | Infrared measurement of paper machine clothing condition |
| CN102817269A (en) * | 2012-06-08 | 2012-12-12 | 方汉佐 | Semi-wet blanket device of high-speed, reverse-net and multi-roller drying type special paper making machine |
| CN103237939A (en) * | 2010-11-29 | 2013-08-07 | 安德里茨技术资产管理有限公司 | A method and an apparatus for drying pulp webs with means for detecting reflected radiation for analysing the position of the web and the occurence of any residue of the web |
| CN206843854U (en) * | 2017-04-26 | 2018-01-05 | 四川省犍为凤生纸业有限责任公司 | Page steam drying efficiently lowers consumption system |
| CN107587371A (en) * | 2016-07-07 | 2018-01-16 | 奥胜制造(太仓)有限公司 | It is used to produce the equipment of the felt in the system of paper web for cleaning |
-
2018
- 2018-12-26 CN CN201811602661.6A patent/CN109722937A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451064A (en) * | 1999-12-16 | 2003-10-22 | 梅特索·佩珀·卡尔斯塔德公司 | An apparatus and associated method for drying a wet web of paper |
| US20070028481A1 (en) * | 2005-08-05 | 2007-02-08 | Daniel Gronych | Apparatus for dewatering a fibrous web |
| CN101896810A (en) * | 2007-10-11 | 2010-11-24 | 霍尼韦尔阿斯卡公司 | Infrared measurement of paper machine clothing condition |
| CN103237939A (en) * | 2010-11-29 | 2013-08-07 | 安德里茨技术资产管理有限公司 | A method and an apparatus for drying pulp webs with means for detecting reflected radiation for analysing the position of the web and the occurence of any residue of the web |
| CN102817269A (en) * | 2012-06-08 | 2012-12-12 | 方汉佐 | Semi-wet blanket device of high-speed, reverse-net and multi-roller drying type special paper making machine |
| CN107587371A (en) * | 2016-07-07 | 2018-01-16 | 奥胜制造(太仓)有限公司 | It is used to produce the equipment of the felt in the system of paper web for cleaning |
| CN206843854U (en) * | 2017-04-26 | 2018-01-05 | 四川省犍为凤生纸业有限责任公司 | Page steam drying efficiently lowers consumption system |
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Application publication date: 20190507 |
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