CN212128674U - Feeding device for light-weight surface sizing - Google Patents
Feeding device for light-weight surface sizing Download PDFInfo
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- CN212128674U CN212128674U CN202020507553.7U CN202020507553U CN212128674U CN 212128674 U CN212128674 U CN 212128674U CN 202020507553 U CN202020507553 U CN 202020507553U CN 212128674 U CN212128674 U CN 212128674U
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Abstract
The utility model provides a make things convenient for continuous operation, guarantee glue solution quality and improve the feedway of a light weight surface sizing of paper quality, including the material loading jar that is used for storing the starch glue solution, a pressurized screen that is used for filtering the starch glue solution, a light weight sizing subassembly that is used for light weight sizing, a shale shaker that is used for getting rid of backward flow glue solution impurity, a return flume that is used for retrieving backward flow glue solution and a cone type desander group that is used for purifying the glue solution of retrieving, light weight sizing subassembly includes last roll of applying glue, the glueing lower roll and provide the upper roll roof beam and the lower roll roof beam of starch glue solution for last roll of applying glue and glueing lower roll respectively, all be equipped with the metering rod between last roll roof beam and the last roll of applying glue and between lower roll roof beam and the glueing lower roll, the bottom of last roll roof beam and lower roll roof beam is equipped, the output ends of the upper roller beam, the lower roller beam and the rubber receiving disc are communicated with an input end pipeline of the vibrating screen.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a papermaking equipment, especially a feedway of light weight surface sizing.
[ background of the invention ]
Currently, the surface sizing technology is widely popularized and applied in the field of waste paper papermaking, and the research and development of the starch conversion technology and the surface sizing technology are continuously advanced. The prior surface sizing for papermaking by waste paper mostly adopts soaking type sizing, namely, base paper passes through a sizing material weir pool formed by a closed area of a pair of obliquely arranged sizing rollers, the starch glue solution has strong permeability in the sizing mode, the base paper has higher absorption capacity to the glue solution, and the sizing agent has better reinforcing effect on packaging paper with higher quantitative (such as more than 100 g/square meter). For low-basis weight and high-strength corrugated medium paper, due to low basis weight and thin paper sheet thickness, if the sizing method is still adopted, the adverse effect is very obvious: firstly, wet paper after sizing has high moisture and low strength, which is not beneficial to paper guiding operation; secondly, drying of the wet paper after sizing needs more heat energy, which is not beneficial to control of unit product energy consumption; thirdly, the sizing operation has more broken paper, the papermaking rate is low, and the consumption of sizing material of unit product is high. Therefore, the low-basis weight product production is more suitable for light-weight surface sizing, the typical light-weight surface sizing, the starch glue solution is transferred to the surface of a paper sheet through a metering rod, the absorption capacity of the base paper to the glue solution is low, and the sizing mode can be used for single-side and double-side sizing. In the light-weight surface sizing, because the formed starch adhesive film is very thin, higher requirements are put on the quality of base paper, the quality of glue solution and the mechanical property, especially in the process of making paper by using waste paper, because of the influence of friction or pulp, the base paper still can be subjected to hair and powder falling (mainly by fine fibers), and if the quality of the glue solution is poor, the gluing process is greatly influenced: firstly, the metering rod is abraded, so that the service cycle of the metering rod is short; secondly, the sizing is not uniform, so that the paper surface is 'faceting'; thirdly, starch sizing pipelines are blocked, and sizing operation is affected.
[ Utility model ] content
The to-be-solved technical problem of the utility model is to provide a feedway of light weight surface sizing who makes things convenient for continuity of operation, guarantees the glue solution quality and improves the page quality.
The purpose of the utility model is realized like this:
a feeding device for light weight surface sizing comprises a feeding tank for storing starch glue, a pressure screen communicated with the feeding tank pipeline and used for screening the starch glue, a light weight sizing component communicated with the pressure screen pipeline and used for light weight sizing, a vibrating screen communicated with the output end pipeline of the light weight sizing component and used for removing impurities in backflow glue, a backflow tank communicated with the vibration screen pipeline and used for recycling backflow glue and a conical desander set respectively communicated with the feeding tank and used for purifying recycled glue, wherein a feeding pump is arranged between the output end of the feeding tank and the input end of the pressure screen, a backflow pump is arranged between the output end of the backflow tank and the input end of the conical desander set, the light weight sizing component comprises an upper roller, a lower sizing roller and an upper roller beam and a lower roller beam which are used for sizing and providing starch glue respectively, the device comprises a pressure screen, a sizing roller, a sizing lower roller, a sizing upper roller, a sizing lower roller, a metering rod, a glue receiving disc and a glue receiving disc, wherein the metering rod is arranged between the sizing upper roller and between the sizing lower roller and used for transferring starch glue liquid on the sizing upper roller and the sizing lower roller to the sizing surface of the sizing upper roller and the sizing lower roller respectively, the bottom of the sizing upper roller and the bottom of the sizing lower roller are provided with the glue receiving disc used for recovering redundant.
According to the feeding device for light-weight surface sizing, a rubber conveying pipe is connected between the input ends of the upper roller beam and the lower roller beam and the output end of the pressure screen, a rubber return pipe communicated with the input end of the feeding tank is connected to the rubber conveying pipe, and switch valves are arranged on the rubber conveying pipe and the rubber return pipe.
According to the feeding device for light-weight surface sizing, the pressure screen and the slag discharge end of the conical desander set are communicated with the input end pipeline of the backflow groove, the good pulp output end of the conical desander set is communicated with the input end pipeline of the feeding tank, and the backflow pipe is connected between the good pulp output end of the conical desander set and the input end of the backflow groove.
According to the feeding device for light-weight surface sizing, the output ends of the upper roller beam, the lower roller beam and the glue receiving disc are provided with the sewage discharge assembly.
According to the feeding device for light-weight surface sizing, the bottom of the feeding tank is provided with the conical structure, the upper part of the feeding tank is provided with the low-speed stirring assembly, and the outer wall of the feeding tank is provided with the heat insulation layer.
The light-weight surface sizing feeding device is characterized in that the pressure screen is an inward flow type pressure screen with a screen cylinder and a rotor, and the screen cylinder seam width of the inward flow type pressure screen is 0.15mm-0.20 mm.
The feeding device for light-weight surface sizing is characterized in that the vibrating screen is a flat screen which performs low-frequency vibration by adopting an eccentric wheel rotating structure, and the seam width of the screen plate is 0.5mm-1.0 mm.
According to the feeding device for light-weight surface sizing, the outer side wall of the backflow groove is coated with rock wool heat preservation materials.
Compared with the prior art, the utility model, have following technical characterstic:
1. aiming at papermaking from recycled waste paper raw materials, under the condition of low quality of pulp fibers, various coarse impurities and heavy impurities brought into starch glue solution in the gluing process are removed through the combination of a feeding flow screening and purifying device, so that the quality of the starch glue solution is ensured;
2. by improving the quality of the glue solution, the abrasion of the light-weight surface sizing metering rod is reduced, the service cycle of the metering rod is prolonged, and the accidental shutdown time is reduced;
3. the surface sizing effect and the glue solution coating effect are improved, the production efficiency of the low-basis-weight high-strength corrugated medium paper light-weight surface sizing is improved, the material and energy consumption of unit products is reduced, and the appearance and the internal quality of the products are improved.
[ description of the drawings ]
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the light-weight glue applying assembly of the present invention.
[ detailed description ] embodiments
A feeding device for light weight surface sizing comprises a feeding tank 1 for storing starch glue, a pressure screen 2 which is communicated with the feeding tank 1 through a pipeline and is used for screening the starch glue, a light weight sizing component 3 which is communicated with the pressure screen 2 through a pipeline and is used for light weight sizing, a vibrating screen 4 which is communicated with an output end pipeline of the light weight sizing component 3 and is used for removing impurities of backflow glue, a backflow tank 5 which is communicated with the vibrating screen 4 through a pipeline and is used for recycling the backflow glue, and a conical sand remover group 6 which is respectively communicated with the backflow tank 5 and the feeding tank 1 through pipelines and is used for purifying the recycled glue, wherein a feeding pump 11 (adopting a centrifugal pump or a gear pump) is arranged between the output end of the feeding tank 1 and the input end of the pressure screen 2, a backflow pump 51 is arranged between the output end of the backflow tank 5 and the input end of the conical sand remover group 6, the light weight, A sizing roller 32, an upper roller beam 33 and a lower roller beam 34 which respectively provide starch glue for the upper sizing roller 31 and the lower sizing roller 32, wherein a metering rod 35 is arranged between the upper roller beam 33 and the upper sizing roller 31 and between the lower roller beam 34 and the lower sizing roller 32 for respectively transferring the starch glue on the upper roller beam 33 and the lower roller beam 34 to the sizing surfaces of the upper sizing roller 31 and the lower sizing roller 32 (for relatively accurately controlling the sizing amount, the surface of the metering rod 35 is provided with a plurality of groove grooves, the starch glue on the upper roller beam 33 and the lower roller beam 34 is firstly transferred to the roller surfaces of the upper sizing roller 31 and the lower sizing roller 32 and then transferred to the paper surface), the bottoms of the upper roller beam 33 and the lower roller beam 34 are provided with glue receiving discs 36 for recovering redundant glue, the input ends of the upper roller beam 33 and the lower roller beam 34 are communicated with an output end pipeline of, the output ends of the lower roller beams 34 and the glue receiving discs 36 are communicated with the input end pipeline of the vibrating screen 4.
A rubber delivery pipe 21 is connected between the input ends of the upper roller beam 33 and the lower roller beam 34 and the output end of the pressure screen 2, a rubber return pipe 22 communicated with the input end of the feeding tank 1 is connected to the rubber delivery pipe 21, and switch valves 23 are arranged on the rubber delivery pipe 21 and the rubber return pipe 22. The input ends of the upper roller beam 33 and the lower roller beam 34 are provided with regulating valves which can regulate respective feeding flow, in order to keep uniform sizing of the banner, the sizing material flows back through the output ends of the upper roller beam 33 and the lower roller beam 34, the backflow proportion is 10-30% of the feeding amount, the control of the regulating valves on the input ends can be used, redundant and leaked sizing material falls into the sizing receiving disc 36 and enters the vibrating screen 4 together with the backflow of the upper roller beam 33 and the lower roller beam 34. In case of an emergency paper break, the on-off valve 23 on the glue delivery pipe 21 is closed, the on-off valve 23 on the glue return pipe 22 is opened, the starch glue flows back to the charging tank 1 under the driving of the feeding pump 11, so that the glue is saved, at this time, the light sizing component 3 stops sizing, and the metering rod 35 can be cleaned by a cleaning spray pipe arranged beside the metering rod 35.
The slag discharge end of the pressure screen 2 and the conical desander group 6 is communicated with the input end pipeline of the reflux groove 5, the good pulp output end of the conical desander group 6 is communicated with the input end pipeline of the feeding tank 1, and a reflux pipe 61 is connected between the good pulp output end of the conical desander group 6 and the input end of the reflux groove 5. The backflow groove 5 receives backflow rubber materials of the pressure screen 2, the vibrating screen 4 and the cone-shaped slag remover group 6, the outer side wall of the backflow groove is coated with rock wool heat insulation materials, the rubber materials inside the backflow groove are sent into the cone-shaped slag remover group 6 through the backflow pump 51, the bottom of the backflow groove is provided with a liquid level sensor, and liquid level control is carried out on the backflow rubber materials and the adjusting valve of the backflow rubber material pipeline of the cone-shaped slag remover group 6. The conical slag remover group 6 can be provided with one or more than one slag remover according to the treatment amount, the internal liquid is in vortex propulsion, the separation and purification are carried out by utilizing the gravity principle according to the density of the medium, pressure sensors are arranged on the input end and the output end of the slag remover group, the input end and the reflux pump 51 are used for inlet pressure control, and the input end and the output end are used for differential pressure control. The output end of the good pulp is used for recycling the available glue solution (returning to the charging bucket 1), and the return pipe 61 can be communicated to return a part of glue solution to the return tank 5 according to actual conditions.
And the output ends of the upper roller beam 33, the lower roller beam 34 and the rubber receiving disc 36 are provided with a sewage discharge assembly 37, the sewage discharge assembly 37 is provided with a sewage discharge valve, and the sewage discharge valve can be opened to discharge sewage when the metering rod 35 is cleaned.
The bottom of the charging bucket 1 is provided with a conical structure, the upper part of the charging bucket is provided with a low-speed stirring assembly, the outer wall of the charging bucket 1 is provided with a heat preservation layer, the heat preservation layer is a hot water or condensate pipe arranged around the inner wall of the charging bucket 1, and water with the temperature of 60-80 ℃ is introduced into the heat preservation layer. The bottom of the charging bucket 1 is provided with a temperature sensor and a liquid level sensor, so that the liquid level can be controlled with a transfer pump of a storage tank (the storage tank provides starch glue solution for the charging bucket 1 through the transfer pump).
The pressure screen 2 is an internal flow type pressure screen with a screen cylinder and a rotor, and the screen cylinder seam width of the pressure screen is 0.15mm-0.20 mm. The starch glue liquid in the feeding tank 1 is conveyed to the pressure screen 2 through the feeding pump 11, the pressure screen 2 can remove impurities in the starch glue liquid in various shapes such as thick fibers, paper scraps, glue blocks and the like, and screened qualified glue materials are conveyed to the light sizing component 3 for sizing. The input end of the pressure screen 2 is provided with a pressure sensor which controls the pressure with the feeding pump 11. The output end of the pressure screen 2 is provided with a pressure sensor to perform differential pressure control with the pressure sensor at the input end.
The vibrating screen 4 is a flat screen which adopts an eccentric wheel rotating structure to carry out low-frequency vibration, and the seam width of a screen plate is 0.5mm-1.0 mm. The vibrating screen 4 can remove larger impurities from the reflowed glue solution, and the sieved glue solution enters the reflow tank 5.
The utility model discloses when specifically using, according to product quality requirement, can provide the glue application volume of 1.5-3.0 g/square meter for low quantitative high strength corrugated core paper body paper (to air-dry starch volume to air-dry finished product paper volume), the starch glue liquid solid content who uses is 9-15%, and viscosity is less than 100 mPa. Compared with the soaking type surface sizing, the light-weight surface sizing of the embodiment can save 20-30% of the consumption of the starch glue, and the steam consumption of a drying part after sizing is reduced by 30-40%.
The utility model discloses a flow and equipment optimization effectively get rid of various light heavy impurity of light weight surface sizing in-process, guarantee starch glue solution quality, help improving the surface quality of glueing back paper, reduce the wearing and tearing of metering rod, improve equipment utilization efficiency promotes the comprehensive economic benefits of low quantitative high-strength corrugated core paper product.
Claims (8)
1. The feeding device for light-weight surface sizing is characterized by comprising a feeding tank (1) for storing starch glue, a pressure screen (2) which is communicated with the feeding tank (1) through a pipeline and used for screening the starch glue, a light-weight sizing component (3) which is communicated with the pressure screen (2) through a pipeline and used for light-weight sizing, a vibrating screen (4) which is communicated with an output end pipeline of the light-weight sizing component (3) and used for removing impurities of backflow glue, a backflow tank (5) which is communicated with the vibrating screen (4) through a pipeline and used for recycling the backflow glue, and a conical sand remover group (6) which is respectively communicated with the backflow tank (5) and the feeding tank (1) through a pipeline and used for purifying the recycled glue, wherein a feeding pump (11) is arranged between the output end of the feeding tank (1) and the input end of the pressure screen (2), a reflux pump (51) is arranged between the output end of the reflux tank (5) and the input end of the conical desander group (6), the lightweight sizing component (3) comprises an upper sizing roller (31), a lower sizing roller (32) and an upper roller beam (33) and a lower roller beam (34) which are respectively used for providing starch glue for the upper sizing roller (31) and the lower sizing roller (32), the upper roller beam (33) and the upper sizing roller (31) and the lower roller beam (34) and the lower sizing roller (32) are respectively provided with a metering rod (35) for respectively transferring the starch glue on the upper roller beam (33) and the lower roller beam (34) to the sizing surfaces of the upper sizing roller (31) and the lower sizing roller (32), the bottom of the upper roller beam (33) and the lower roller beam (34) is provided with a glue receiving disc (36) for recovering redundant glue, the input end of the upper roller beam (33) and the lower roller beam (34) is communicated with the output end pipeline of the pressure screen (2), and the output ends of the upper roller beam (33), the lower roller beam (34) and the rubber receiving disc (36) are communicated with the input end pipeline of the vibrating screen (4).
2. A feeding device for light weight surface sizing according to claim 1, characterized in that a rubber delivery pipe (21) is connected between the input ends of the upper roller beam (33) and the lower roller beam (34) and the output end of the pressure screen (2), a rubber return pipe (22) communicated with the input end of the feeding tank (1) is connected to the rubber delivery pipe (21), and both the rubber delivery pipe (21) and the rubber return pipe (22) are provided with a switch valve (23).
3. A feeding device for light weight surface sizing according to claim 1 or 2, characterized in that the slag discharge ends of the pressure screen (2) and the conical desander group (6) are communicated with the input end pipeline of the reflux tank (5), the accept output end of the conical desander group (6) is communicated with the input end pipeline of the feeding tank (1), and a reflux pipe (61) is connected between the accept output end of the conical desander group (6) and the input end of the reflux tank (5).
4. A feeding device for light weight surface sizing according to claim 1, characterized in that the output ends of the upper roll beam (33), the lower roll beam (34) and the glue receiving pan (36) are provided with a dirt discharge assembly (37).
5. A feeding device for light weight surface sizing according to claim 1, characterized in that the bottom of the material feeding tank (1) is provided with a conical structure, the upper part of the material feeding tank is provided with a low speed stirring component, and the outer wall of the material feeding tank (1) is provided with an insulating layer.
6. A lightweight surface sizing supply device according to claim 1, characterized in that the pressure screen (2) is an internal flow pressure screen with a screen cylinder and a rotor, the screen cylinder slot width of which is 0.15mm-0.20 mm.
7. A feeding device for light weight surface sizing according to claim 1, characterized in that the vibrating screen (4) is a flat screen which is vibrated at low frequency by means of an eccentric rotating structure, and the width of the screen plate slit is 0.5mm-1.0 mm.
8. A feeding device for light weight surface sizing according to claim 1, characterized in that the outer side wall of the return tank (5) is covered with rock wool insulation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020507553.7U CN212128674U (en) | 2020-04-08 | 2020-04-08 | Feeding device for light-weight surface sizing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020507553.7U CN212128674U (en) | 2020-04-08 | 2020-04-08 | Feeding device for light-weight surface sizing |
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| CN212128674U true CN212128674U (en) | 2020-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622223A (en) * | 2021-06-29 | 2021-11-09 | 玖龙纸业（太仓）有限公司 | Glue supply system and method for surface glue application and feeding station in kraft liner board production process |
| EP4151300A1 (en) * | 2021-09-20 | 2023-03-22 | BVG Bauer Verfahrenstechnik GmbH | Reject cascade |
-
2020
- 2020-04-08 CN CN202020507553.7U patent/CN212128674U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622223A (en) * | 2021-06-29 | 2021-11-09 | 玖龙纸业（太仓）有限公司 | Glue supply system and method for surface glue application and feeding station in kraft liner board production process |
| EP4151300A1 (en) * | 2021-09-20 | 2023-03-22 | BVG Bauer Verfahrenstechnik GmbH | Reject cascade |
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