CN202898885U - Three-roller two-nip pressing device of high-speed inverse-network multi-roller drying special paper machine - Google Patents

Abstract

The utility model discloses a three-roller two-nip pressing device of a high-speed inverse-network multi-roller drying special paper machine. The three-roller two-nip pressing device 220 comprises a compression roller 223, a vacuum roller 221 and a flat roller 222, wherein the compression roller 223 exert pressure on the vacuum roller 221 and the flat roller 222 simultaneously, a first path is the vacuum roller 221, a second path is the flat roller 222, and the compression roller 223 also plays a role of being used as a back roller. The pressing effect of the vacuum roller 221 is better than that of the flat roller, but dehydration is inconsistent between the portion with vacuum pressing holes and the portion without vacuum pressing holes, thus finished paper 206 is influenced. The three-roller two-nip pressing device of the high-speed inverse-network multi-roller drying special paper machine combines the portion with the vacuum pressing holes with the portion without the vacuum pressing holes, thus consistency of the moisture of paper web is realized, and meanwhile, tightness and dryness of the paper web 226 are improved.

Description

The dry extraordinary paper machine three rollers two nip press devices of at a high speed contrary net multiple roll

Technical field

The utility model relates to a kind of papermaking equipment field.Especially a kind of manufacturing tissue machine.Particularly make the dry extraordinary paper machine three rollers two nip press devices of the contrary net multiple roll of high speed of transfer printing body paper and decorating base paper.

Background technology

The transfer printing body paper is a kind of industrial paper, is mainly used in the transfering printing process of textiles.First various decorative patterns, pattern, color are printed on the transfer printing body paper; Then will be printed on transfer printing body paper and the fabric close contact of decorative pattern, pattern, in the situation of control uniform temperature, pressure and time, dyestuff is transferred on the fabric from calico paper, then enters fabric through diffusion, thereby reaches painted purpose.

In the transfer printing process, at first to be printed on pattern, decorative pattern on the transfer printing body paper, and then be transferred to cloth surface by the transfer printing body paper, especially in the transfer process of back, pattern will keep the characteristics such as flower shape is true to nature, decorative pattern is careful, clear layer, third dimension are strong, and this requirement to transfer printing body paper performance is higher.

Decorating base paper is widely used in the decoration field.Such as desk, furniture etc.The patterns such as wood grain that need to print at the decorating base paper surface label in the application, the quality of decorating base paper and printing performance are determining the patterns such as the wood grain degree true to nature of furniture.

In sum, transfer printing body paper and decorating base paper require not only quality of finished paper requirement high, and printing and transfer performance also require height.Its physical property is specifically:

(1) require page to have enough intensity.Paper surface does not fall hair, dry linting not.In printing and transfer process, can there be certain tension force in paper, and speed is faster, and tension force is larger, therefore requires paper to have enough intensity.

(2) exigent smoothness.Only have smoothness high, printing effect is good, and especially transfer printing body paper and decorating base paper because if transfer printing body paper smoothness is poor, make the dye sublimation rate on the paper inconsistent.Therefore, transfer on the cloth and also can thicken.

According to above requirement, production transfer printing body paper and decorating base paper form according to certain proportioning in requisition for softwood pulp and hardwood pulp, and require most hardwood pulps on the top layer, overwhelming majority softwood pulp is at bottom, so just can print the better effects if when shifting, smoothness reached more than 1000 seconds.(production and the application [J] of list of references Fang Hanzuo regeneration transfer printing body paper. Shanghai papermaking, 1999 (3): 13)

At present, all adopt general paper machine at manufacturing transfer printing body paper, be difficult to reach requirement.Existing technology, production efficiency is low, and manufacturing cost is corresponding too high, and product quality is difficult to reach market demands.

Figure one is existing paper machine schematic diagram, and existing paper machine comprises: frame 104, forming section 101, press section 102, drying section 103 and reeling end 109.Wherein forming section 101 comprises head box 111, breast roll 112, suction couch roll 117, forming board 113, Wiper blade 114, suction box 115 and forming net 119.Described forming net 119 is by breast roll 112, the member supporting such as suction couch roll 117 and deflector roll, the centre is provided with forming board 113, Wiper blade 114 and suction box 115.Described head box 111 is located at breast roll 112 near-ends.Drying section 103 comprises drying cylinder 147 and lower drying cylinder 107, and lower drying cylinder 107 is located between drying cylinder 147 and the reeling end 109, also is provided with soft calendaring 105 between lower drying cylinder 107 and the reeling end 109.

In paper-making process, forming section 101 is processes of drainage and formation, and by a large amount of research and practices, we find the more important thing is the process of a precipitation.So in forming process, most softwood pulps are deposited in the bottom of paper web 126, otherwise most hardwood pulps are on the top layer of paper web 126.The paper that adopts existing general paper machine to manufacture be most softwood pulps in the front, and the reasonable most hardwood pulps of printing adaptability are at reverse side.

Although it is not very large that the tissue papers such as transfer printing body paper and decorating base paper require the smoothness of reverse side and glossiness, the smoothness of reverse side is crossed to hang down batching middle meeting directly affects positive smoothness.So after paper web 126 goes out drying cylinder 147, be provided with lower drying cylinder 107 and soft calendaring 105 facilities in the existing technology.Need to consume a large amount of steam and electric energy.Especially soft calendaring 105, need steam and two drive station of 0.4Mpa, need two driven by motor.

In sum, the one-tenth paper 106 that existing paper machine manufactures be softwood pulp in the front, and the reasonable hardwood pulp of printing adaptability is becoming paper 106 reverse side.Thereby have influence on printing effect and the transfer effect of printing ink, and what is more, can lower the gloss of printing, make printing ink seem, the bright-coloured not printing defects that waits of color.Lower drying cylinder 107 and soft calendaring 105 facilities, energy resource consumption is large, and it is not enough that carbon monoxide and CO2 emissions are large etc.Therefore, it is low to solve production efficiency, reduces energy resource consumption, advocates the production of cleaning low-carbon (LC), improves the quality of products, and has become the actual needs of production.

Summary of the invention

For the above-mentioned deficiency on the prior art, the technical problems to be solved in the utility model provides a kind of manufacturing tissue machine three rollers two nip press devices.Especially make the dry extraordinary paper machine three rollers two nip press devices of the at a high speed contrary net multiple roll of Chinese assistant of transfer printing body paper and decorating base paper.

Shown in figure two, the utility model solves the technical scheme that its technical problem adopts and is: the dry extraordinary paper machine of the at a high speed contrary net multiple roll of Chinese assistant comprises frame 204, forming section 201, press section 202, drying section 203 and reeling end 209.

Described forming section 201 comprises head box 211, breast roll 212, suction couch roll 217 and reverse forming net device 210.Described head box 211 is arranged on described breast roll 212 near-ends, and is arranged between described breast roll 212 and the described drying section.Described forming net device 210 comprises forming board 213, Wiper blade 214, suction box 215 and forming net 219.Described forming net 219 is by comprising breast roll 212, and suction couch roll 217 and deflector roll are in interior a plurality of member supporting, and the centre is provided with forming board 213, Wiper blade 214 and suction box 215.The rotation direction of described forming net device 210 is opposite with the complete machine rotation direction, so be referred to as reverse forming net device.

Described press section 202 adopts the pressing device 220 of three rollers, two nips, the pressing device 220 of described three rollers, two nips comprises pressure roller 223, vacuum furnace 221, plain-barreled roll 222, pressure roller 223 is exerted pressure to vacuum furnace 221 and plain-barreled roll 222 simultaneously, wherein first is vacuum furnace 221, and second is plain-barreled roll 222, and pressure roller 223 doubles as later roller effect.

Described drying section 203 comprises half wet felt device 230, drying cylinder 247 and multiple roll drying device 240.

Described half wet felt device 230 comprises that moisture content is 40% glazing felt 238, the wash mill 231 that drips, and suction box 235, glazing felt 238 dry baby dryers 237 and vacuum are inhaled moving device 234.Described moisture content is that 40% glazing felt 238 is provided in a side of that drying section 203 is used for carrying and carrying paper web 226, and the wash mill 231 that drips is the devices that wash glazing felt 238.Described suction box 235 has two groups, every group of at least one suction box, first group is woollen blanket front suction box, second group is woollen blanket reverse side suction box, described woollen blanket front suction box 235 is devices that the residue on the glazing felt 238 and moisture content are siphoned away, described woollen blanket reverse side suction box 235 is the water absorbers for glazing felt 238 reverse side, mainly is that the moisture content that also not have to evaporate during with dry baby dryer 237 heating of glazing felt siphons away.

Described drying cylinder 247 is by the mode of heating paper web 226 to be dried, and makes paper web 226 dryings become the device of paper 206.

Described multiple roll drying device 240 is included in around the drying cylinder 247 according to different angles and is provided with a plurality of dryer rolls and the pressure exerting arrangement of dryer roll separately.Described pressure exerting arrangement is according to need of production, thus the device that dryer roll is separately exerted pressure drying cylinder 247 is exerted pressure.

Also be provided with printing performance at drying section 203 and adapt to agent bringing device 208, it is that page 249 is added the device that printing performance adapts to agent 299 that described printing performance adapts to agent bringing device 208.Between drying cylinder 247 and reeling end 209, also be provided with paper defects online detection and control system 290.

1. described reverse forming net device 210, its rotation direction is opposite with the complete machine rotation direction.Paper machine divides right hand machine and right hand machine according to rotation direction, and figure two is the utility model right hand machine application examples.Shown in figure two: paper pulp 216 has formed paper web 226 at reverse forming net device 210, through pressing device 220 inhale by vacuum move roller 234 inhale move after, it is dry that glazing felt 238 is transported to drying cylinder 247 places.By just so anti-, make most hardwood pulps in the front that becomes paper 206, most softwood pulps are at the back side that becomes paper 206.

2. press section 202 adopts the pressing device 220 of three rollers, two nips.The pressing device of described three rollers, two nips is arranged on the front end of reverse forming net device, described pressing device comprises: pressure roller 223, vacuum furnace 221 and plain-barreled roll 222, described vacuum furnace 221 is located at paper web 226 upstream ends, described pressure roller 223 is located at paper web 226 and goes out end, directly over described pressure roller 223 was located between described vacuum furnace 221 and the described pressure roller 223, described pressure roller 223 was provided with pressure exerting arrangement, and described pressure exerting arrangement is to make pressure roller 223 apply linear pressure to described vacuum furnace 221 and described pressure roller 223 simultaneously; Described pressure roller 223 diameters are described vacuum furnace 221 and described pressure roller 223 diameter mean values 1.3 times; Described pressure roller 223 diameters are described vacuum furnaces 221 with 1.2 times of described pressure roller 223 centre-to-centre spacing in; Described pressure roller 223, described vacuum furnace 221 and described plain-barreled roll 222 are exerted pressure to paper web 226 by being coated on described pressure roller 223, described vacuum furnace 221 and described plain-barreled roll 222 outer woollen blankets; The pressing device 220 of described three rollers, two nips is characterized in that first is vacuum furnace 221, and second is plain-barreled roll squeezing 222.Vacuum furnace 221 is known well than the dehydrating effect of plain-barreled roll 222.But the suction press eye portion is arranged and do not have the dehydration of suction press eye portion inconsistent, cause becoming the impact of paper 206.The application of the pressing device 220 by three rollers, two nips, it is in full accord to reach paper web moisture content, has improved simultaneously tightness and the mass dryness fraction of paper web 226.The mass dryness fraction of press section 202 every raisings 1% can reduce the burden of drying cylinder 247 at least 4%, that is to say the mass dryness fraction of press section 202 every raisings 1%, and drying section 203 can improve at least 4% optimum dry speed of a motor vehicle, economizes on coal simultaneously just more than 4%.Thereby improved production efficiency, and saved the energy, reduced the discharge capacity of carbon monoxide and carbon dioxide.

3. be provided with half wet felt device 230 and multiple roll drying device 240 at drying section 203.Described half wet felt device 230 is with drying section 203 existing glazing felts 238, goes out two road suction boxs 235 through the dry baby dryer 237 of drip wash mill 231 and glazing felt, enters the glazing felt 238 of moisture control about 40% before the carrying roller 241.The dry baby dryer 237 of described glazing felt adopts the condensed water of the flash steam of large drying cylinder 247 and discharge as the temperature rise material, and drive station not.

4. described multiple roll drying device 240, according to different angles cloud cloth around drying cylinder 247, and the device of drying cylinder 247 being exerted pressure by pressure exerting arrangement separately.The moisture content of paper web 226 is about 68% under normal circumstances, the application of the pressing device 220 of three rollers, two nips, the moisture content of paper web 226 is about 64%, because the moisture content of glazing felt 238 is about 40%, so under the linear pressure of a carrying roller 241, the moisture content of paper web 226 infiltrates in the glazing felt 238 and takes away, and can not overflow from the line pressure district of a carrying roller 241.So any position that a carrying roller 241 can be around drying cylinder 247 is proven, its vertical direction eccentric angle with drying cylinder 247 centers is 10 °-80 °, deflection drying cylinder 247 rotation opposite directions one side, and preferably 45 °-65 °, the best is 55 °.One carrying roller 241 is exerted pressure to paper web 226 in advance, and the angle of paper web 226 drying cylinder that coats 247 improves about 60 °, can improve the effective drying surface about about 26% of drying cylinder 247.Can improve the optimum dry speed of a motor vehicle more than 26%.Reduce on year-on-year basis ton paper consumption coal more than at least 26%.Thereby improved production efficiency, saved the energy, reduced the discharge capacity of carbon monoxide and carbon dioxide.

5. before paper web 226 enters a carrying roller 241, moisture content is still very high, water content is about 68%, so the water evaporates amount of paper web 226 is large when a carrying roller 241, after paper web 226 goes out a carrying roller 241, a large amount of steam that drying cylinder 247 and paper web are 226 has stronger impulsive force to paper web 226, this moment, paper web 226 descended greatly with the degree of pasting of drying cylinder 247, if when a carrying roller 241, paper web 226 is made as 100 with the degree of pasting of drying cylinder 247, and when entering two carrying rollers 242, its degree of pasting is approximately about 70, under the linear pressure of two carrying rollers 242, make paper web 226 and the degree of pasting of drying cylinder 247 bring up to again 100.Because paper web 226 is when a carrying roller 241, its moisture content is than glazing felt 238 height, and the moisture content of paper web 226 penetrates in the glazing felt 238.Before entering three carrying rollers 243, paper web 226 drops to again about 70 with the degree of pasting of drying cylinder 247 equally, and under the linear pressure of three carrying rollers 243, paper web 226 brings up to 100 again with the degree of pasting of drying cylinder 247.The drying effect of Effective Raise drying cylinder 247.

6. light carrying roller 244 materials are rubber rolls, and it does not coat woollen blanket, under the linear pressure of the 700N/cm of light carrying roller 244, effectively eliminate the felt mark on paper web 226 reverse side, more effectively improve smoothness and the glossiness in paper web 226 fronts.Reach the same texts of lower drying cylinder 107, therefore need not to re-use lower drying cylinder 107.Under the linear pressure of light carrying roller 244, again improve degree of pasting to 100, improved the drying capacity of drying cylinder.The Effective Raise speed of a motor vehicle.

7. optical press roll 245 does not coat woollen blanket, and when paper web 226 entered optical press roll 245, its moisture content was about about 11%, and finalized the design almost this moment, so be called page 246.The surface-brightening of drying cylinder 247 such as mirror, under the linear pressure of optical press roll 245, when page 246 goes out optical press roll 245, the moisture content of page 246 is about about 8%, so the smoothness of page 246, glossiness, tightness improve greatly, and the fibr tissue of page 246 is tightr, tear-resistant degree etc. all improve a lot, the physical property of page 246 has the raising of matter, has surpassed the effect of soft calendaring 105, thereby existing follow-up soft calendaring 105 devices need not to re-use equally.Again reach the effect of energy-saving and emission-reduction.

The beneficial effects of the utility model are:

1, after paper web 226 passes through reverse forming net device 210 and reversed operation pressing device 220, the effect that obtains is just anti-, it is upper dry that the hardwood pulp face of paper web 226 is attached to 247 of drying cylinders, the paper that reverse forming net device 210 paper machines manufacture be most hardwood pulps in paper 206 fronts, and most softwood pulp is in reverse side of paper.The printing adaptability of hardwood pulp can be good.The overwhelming majority is that hardwood pulp paper web 226 faces become positive one-tenth paper 206, has improved printing effect and transfer effect.

2, the application of the pressing device 220 of three rollers, two nips can Effective Raise becomes the quality of paper 206, has improved simultaneously tightness and the mass dryness fraction of paper web 226.The pressing device 220 of three rollers, two nips is compared with plain press, can improve 5% mass dryness fraction at press section 202, can reduce the burden of drying cylinder 247 at least 20%, and drying section 203 can improve at least 20% optimum dry speed of a motor vehicle, economizes on coal more than at least 20% simultaneously.

3, the application of half wet felt device 230 and multiple roll drying device 240 can be saved lower drying cylinder 107 and soft calendaring 105, and only soft calendaring 105 is 2 drive station, by 2 driven by motor, adds the steam of 0.4Mpa air pressure, and steam accounts for about 30% of complete machine consumption.Two motors account for total output load 20%.Drying cylinder 247 effective areas increase by 26%, in theory, can improve the speed of a motor vehicle more than 26%, in fact, by the effect of half wet felt device 230, can realize fast dewatering, just can improve the speed of a motor vehicle 10%, the application of a plurality of carrying rollers improves the degree of pasting of paper web 226 and drying cylinder 247, thereby improves the drying effect of drying cylinder 247.Can improve the speed of a motor vehicle 15%.The utility model only can be brought up on year-on-year basis 1.6 times of speed of a motor vehicle in this part.Steam can save 39% and corresponding consumption coal, water consumption and power consumption on year-on-year basis.Living load can be saved 18% power consumption, and the speed of a motor vehicle is brought up to 1.6 times on year-on-year basis, ton paper integrated power-saving 55% on year-on-year basis herein, and water saving 29% economizes on coal 39%.Improve into smoothness and the glossiness of paper 206, quantitatively tightness.By the detection one-tenth paper 206 copied of examination that feeds intake, smoothness reached about 1100 seconds.

4. the dry extraordinary paper machine of at a high speed contrary net multiple roll and the complete machine comprehensive energy consumption of existing paper machine and the ability of manufacturing paper with pulp are on year-on-year basis: improving the optimum dry speed of a motor vehicle is existing 1.9 times.Ton paper is integrated power-saving 65% on year-on-year basis, and water saving 35% economizes on coal 45%.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is existing paper machine schematic diagram.

Fig. 2 is the dry extraordinary paper machine schematic diagram of at a high speed contrary net multiple roll.

The specific embodiment

Shown in figure two: press section 202 adopts the pressing device 220 of three rollers, two nips, the pressing device 220 of described three rollers, two nips comprises pressure roller 223, vacuum furnace 221, plain-barreled roll 222, pressure roller 223 is exerted pressure to vacuum furnace 221 and plain-barreled roll 222 simultaneously, wherein first is vacuum furnace 221, and second is plain-barreled roll 222, and pressure roller 223 doubles as later roller effect

Paper web 226 enters the pressing device 220 of three rollers, two nips simultaneously by lower felt 218 and transporting felt 228, after 221 squeezings of first vacuum furnace, make the moisture in the paper web 226 reach 64%, owing to the suction press eye portion is arranged and does not have the dehydration of suction press eye portion inconsistent, cause on the paper web 226 moisture content inhomogeneous, the minimum moisture content limit is 53% after the squeezing of press section 202, behind second plain-barreled roll 222 pressure rollers, can also water outlet, even not water outlet, key is to make paper web 226 moisture content even, improves quality of finished paper.After paper web went out the second pressure roller and is described plain-barreled roll 222, with transporting felt 228 operations, pressure roller 223 doubled as later roller effect.

Claims (4)

1. the pressing device of dry extraordinary paper machine three rollers two nips of the contrary net multiple roll of a high speed, it is characterized in that the pressing device of described three rollers, two nips is arranged on the front end of reverse forming net device, described pressing device comprises: pressure roller (223), vacuum furnace (221) and plain-barreled roll (222), described vacuum furnace (221) is located at paper web (226) upstream end, described pressure roller (223) is located at paper web (226) and goes out end, directly over described pressure roller (223) is located between described vacuum furnace (221) and the described pressure roller (223), described pressure roller (223) is provided with pressure exerting arrangement, and described pressure exerting arrangement is to make pressure roller (223) apply linear pressure to described vacuum furnace (221) and described pressure roller (223) simultaneously.

2. pressing device according to claim 1 is characterized in that described pressure roller (223) diameter is described vacuum furnace (221) and described pressure roller (223) diameter mean value 1.3 times.

3. the pressing device of dry extraordinary paper machine three rollers two nips of the contrary net multiple roll of high speed according to claim 1, it is characterized in that described pressure roller (223) diameter be described vacuum furnace (221) with 1.2 times of described pressure roller (223) centre-to-centre spacing in.

4. pressing device according to claim 1 is characterized in that described pressure roller (223), described vacuum furnace (221) and described plain-barreled roll (222) exert pressure to paper web (226) by being coated on described pressure roller (223), described vacuum furnace (221) and the outer woollen blanket of described plain-barreled roll (222).

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