CN116575252A - Food paper preparation technology and slurry treatment device in preparation process - Google Patents
Food paper preparation technology and slurry treatment device in preparation process Download PDFInfo
- Publication number
- CN116575252A CN116575252A CN202310753117.6A CN202310753117A CN116575252A CN 116575252 A CN116575252 A CN 116575252A CN 202310753117 A CN202310753117 A CN 202310753117A CN 116575252 A CN116575252 A CN 116575252A
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- China
- Prior art keywords
- beating
- tank
- slurry
- pulp
- liquid
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- 239000002002 slurry Substances 0.000 title claims abstract description 99
- 235000013305 food Nutrition 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000005516 engineering process Methods 0.000 title description 2
- 238000010009 beating Methods 0.000 claims abstract description 150
- 239000007788 liquid Substances 0.000 claims abstract description 150
- 238000004537 pulping Methods 0.000 claims abstract description 69
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 12
- 239000011121 hardwood Substances 0.000 claims description 10
- 239000011122 softwood Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 8
- 238000012216 screening Methods 0.000 abstract description 2
- 238000004513 sizing Methods 0.000 description 16
- 239000003795 chemical substances by application Substances 0.000 description 15
- 238000004806 packaging method and process Methods 0.000 description 14
- 229920001131 Pulp (paper) Polymers 0.000 description 10
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 125000002091 cationic group Chemical group 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 239000000945 filler Substances 0.000 description 7
- 229920002472 Starch Polymers 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000008107 starch Substances 0.000 description 6
- 235000019698 starch Nutrition 0.000 description 6
- 239000000725 suspension Substances 0.000 description 5
- 241000282326 Felis catus Species 0.000 description 4
- 239000002939 oilproofing Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013410 fast food Nutrition 0.000 description 1
- 235000013376 functional food Nutrition 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Paper (AREA)
Abstract
The invention discloses a food paper preparation process and a slurry treatment device in the preparation process, and belongs to the technical field of papermaking. The pulp treatment device comprises a beating tank for beating, wherein the beating tank is fixedly connected with an output end of a motion mechanism; the pulping tank is internally and coaxially provided with a pulping rod which has the capability of rotating around an axis, and the periphery of the pulping rod is fixedly connected with at least one filter box; a plurality of liquid inlets are formed in one side face of each filter box, a plurality of filter holes are formed in the other side face of each filter box, and the side faces are opposite to the side face where the liquid inlets are formed; the rotation direction of the beating rod is opposite to the direction from the liquid inlet side to the filtering hole side of the filtering box; the outside of beating jar is provided with the collection box, and collection box and filter tank intercommunication, collection box have the drawing liquid ability. It can realize the screening and filtering of raw materials and slurry clusters which are not crushed and are finished in the slurry, so as to prevent the quality of the produced food paper from being influenced.
Description
Technical Field
The invention belongs to the technical field of papermaking, and particularly relates to a food paper preparation process and a slurry treatment device in the preparation process.
Background
The rapid development of the fast-food market pulls the development of food packaging and paper industry, and the food packaging paper is a packaging product prepared by taking paper pulp and wood pulp as main raw materials, so that on one hand, the packaged food is healthy and sanitary, and the food packaging paper is well degraded after being discarded, and on the other hand, the food can be prevented from being subjected to oil feeding, moisture absorption or water loss and air drying in the shelf life, and the food packaging paper is more and more favored by people due to the advantages;
in the preparation process of the food packaging paper, vegetable fibers are often used as raw materials, and fibrous substances are prepared by different processing methods, so that paper pulp and wood pulp are obtained; wherein, the pulp and the wood pulp are required to be pulped, so that the fibers in the pulp are symmetrically acted by shearing force, and the produced food packaging paper has smooth surface, high bonding strength and good paper performance; however, the existing pulping equipment only depends on the rotation of the pulping rod around the shaft to realize stirring, the pulping efficiency is low, and the pulp, the wood pulp raw materials and the water are not easy to mix, so that the pulping is not thorough, and the quality of the produced paper is affected;
and more people like colored packaging paper at present, so that the demand on the produced colored food packaging paper is greatly increased, the dyeing effect of paper pulp is directly related to the quality of paper pulp, the fineness of the paper pulp needs to be ensured, and the fibers are fully dispersed, partial incompletely crushed raw materials and pulp clusters can be mixed in the paper pulp in the pulping process of the traditional pulping equipment, and after the incompletely crushed raw materials and pulp clusters are made into the packaging paper, the smoothness of the packaging paper is influenced, spots are formed on the surface of the packaging paper, and the attractiveness of the packaging paper is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a food paper preparation process and a slurry treatment device in the preparation process, which can screen and filter raw materials and slurry clusters which are not crushed in the slurry so as to prevent the quality of the food paper obtained by production from being influenced.
The invention relates to a food paper preparation process and a slurry treatment device in the preparation process, which comprises a portal frame and a beating tank for beating, wherein the beating tank is fixedly connected with an output end of a motion mechanism so as to enable the beating tank to have the capability of moving up and down in the vertical direction;
the pulping tank is internally and coaxially provided with a pulping rod which has the capability of rotating around an axis, and the periphery of the pulping rod is fixedly connected with at least one filter box; a plurality of liquid inlets are formed in one side face of each filter box, a plurality of filter holes are formed in the other side face of each filter box, the side faces are opposite to the side face where the liquid inlets are formed, and the aperture of each filter hole does not allow incomplete raw materials and slurry clusters to pass through;
the rotation direction of the beating rod is opposite to the direction from the liquid inlet side to the filtering hole side of the filtering box;
the outside of beating jar is provided with the collection box, and collection box and filter flask intercommunication, and the up-and-down motion of beating jar makes the collection box have the drawing liquid ability.
As a further improvement of the invention, the side surface of the filter box far away from the beating rod is provided with a liquid suction pipe; the liquid collecting box is arranged at one side of the beating tank, and a cavity is formed in the liquid collecting box; a liquid discharge outlet is formed in the side wall of the liquid collection box, and a valve for controlling the liquid discharge outlet to be opened and closed is arranged in the liquid discharge outlet;
a pressing plate is arranged in the liquid collecting box, the pressing plate is horizontally arranged in the liquid collecting box, and the side surface of the pressing plate is attached to the inner wall of the liquid collecting box; the pressing plate is in sealed sliding connection with the inner wall of the liquid collecting box; the pressing plate is fixedly connected with a discharge pipeline, and the position of the discharge pipeline corresponds to the position of the liquid suction pipe; one end of the discharge pipeline penetrates through the upper side and the lower side of the pressing plate, the other end of the discharge pipeline is fixedly connected with the beating tank, and penetrates through the inner side and the outer side of the beating tank.
As a further improvement of the invention, the movement mechanism comprises a connecting column and a control motor; the number of the connecting columns is two, and the two connecting columns are respectively and axially symmetrical by taking the axis of the beating tank as the axis and are fixedly arranged at the two sides of the beating tank; each connecting column is connected with a pushing bar, the pushing bars are vertically arranged, and one side surface of each pushing bar is a tooth surface; the output end of the control motor is connected with the pushing bar in a meshed manner, so that the control motor controls the pushing bar to move up and down; the rotation frequency of each control motor is the same.
As a further improvement of the invention, the number of the filter boxes is two, the two filter boxes have the same structure, and the two filter boxes are arranged on the left side and the right side of the beating rod in a central symmetry way by taking the axis of the beating rod as a shaft.
As a further improvement of the invention, the periphery of the beating rod is fixedly connected with a plurality of beating cross rods, the plurality of beating cross rods take the axis of the beating rod as the shaft, the beating cross rods are symmetrically arranged on the front side and the rear side of the beating rod, the plurality of beating cross rods on the same side are uniformly arranged along the length direction of the beating rod, and the length direction of each beating cross rod is perpendicular to the axis direction of the beating rod.
As a further improvement of the invention, a rotating plate is arranged in each liquid inlet, a rotating shaft is connected between the rotating plate and the filter box, the rotating shaft is fixedly connected with the filter box, and the rotating shaft is rotationally connected with the rotating plate so that the rotating plate can rotate around the rotating shaft; the size of the rotating plate is matched with the size of the liquid inlet, so that when the rotating plate is static, the rotating plate seals the liquid inlet.
As a further improvement of the invention, a limiting plate is arranged on the lower side of each rotating plate; each limiting plate comprises a transverse plate and two vertical plates respectively connected to two sides of the transverse plate; the transverse plates are embedded in the wall of the filter box and penetrate through the inner side and the outer side of the filter box; the transverse plate is in sliding connection with the filter box so that the transverse plate can move towards or away from the inner cavity of the filter box;
the upper end surfaces of the vertical plates positioned on the outer sides are lower than the lower end surfaces of the corresponding rotating plates, so that the existence of the vertical plates does not interfere the rotation of the rotating plates; the upper end face of the vertical plate positioned at the inner side is higher than the lower end face of the corresponding rotating plate;
an elastic rod is fixedly connected between the outer vertical plate positioned at the outer side and the outer surface of the filter box, when the elastic rod is in a free state, the inner vertical plate positioned at the inner side is attached to the inner wall of the filter box, and at the moment, the rotation of the vertical plate positioned at the inner side plays an interference role.
A process for preparing a food paper comprising: mixing bleached chemical softwood or hardwood pulp plates in proportion for pulping; pulping the obtained pulp by a pulp treatment device in the preparation process of food paper to obtain pulped pulp and pulp to be subjected to secondary treatment, which is mixed with incompletely disintegrated raw materials and pulp clusters; and (3) forming and squeezing the pulped pulp by a fourdrinier machine, and drying by a dryer to obtain the finished food paper.
As a further improvement of the present invention, the step of subjecting the obtained slurry to beating treatment by a slurry treatment device in a process of preparing a food paper comprises:
z1: filling a certain amount of crushed softwood pulp or hardwood pulp into a pulping tank;
z2: the beating rod is controlled to rotate around the shaft, and the beating tank is controlled to move up and down by the moving mechanism;
at the moment, the beating rod rotates to beat the slurry in the beating tank; the slurry enters the filter box from the liquid inlet and is discharged from the filter holes, so that the incompletely crushed raw materials and slurry clusters are all remained in the filter box;
z3: ensuring that the number of turns of the beating rod is an integer, and finishing beating of the slurry in the beating tank;
z4: controlling the beating tank to move upwards so as to enable the slurry which is collected in the filter box and contains incompletely crushed raw materials and slurry clusters to be pumped into the liquid collecting box;
z5: controlling the discharge of the slurry containing incompletely crushed raw materials and slurry clusters collected in the liquid collecting box so as to re-crush and pulp the slurry;
z6: the slurry left in the pulping tank is the slurry after pulping, and is used for the next process treatment.
As a further improvement of the present invention, the step of subjecting the obtained slurry to beating treatment by a slurry treatment device in a process of preparing a food paper comprises:
n1: filling a certain amount of pulped softwood pulp or hardwood pulp into the pulping tank 2; the liquid suction pipe is positioned at the liquid suction port, the liquid suction pipe is communicated with the liquid suction port, and the liquid suction port is communicated with the discharge pipeline; at the moment, a valve in the liquid discharge outlet is closed, and a valve of the discharge pipeline is opened;
n2: the rotating motor controls the beating rod to rotate around the shaft, and the motor is controlled to control the beating tank to move up and down;
and N3: the rotating motor controls the beating rod to rotate for 100 circles and then stops working, and controls the motor to stop working; the valve in the liquid discharge outlet is controlled to be closed, the valve in the liquid discharge pipeline is controlled to be opened, the control motor firstly controls the beating tank to move downwards and then controls the beating tank to move upwards, so that the pressure plate is controlled to move downwards, gas in the liquid collecting box is flushed into the beating tank to promote the mixing of slurry in the beating tank, the pressure plate is controlled to move upwards again, and at the moment, the air pressure in the liquid collecting box is reduced, so that the slurry containing incompletely crushed raw materials and slurry clusters collected in the filter box is pumped into the liquid collecting box;
n4: discharging the slurry in the header tank 4;
n5: repeating N2 to N4; so that the slurry in the pulping tank is fully pulped;
n6: and the rest slurry in the final pulping tank is pulped slurry for the next process treatment.
Compared with the prior art, the invention has the beneficial effects that:
(1) The filter box collects and discharges incompletely crushed raw materials and slurry clusters in the slurry into the liquid collecting box, so that the phenomenon that the surface of the food paper is not smooth and is not flat after the incompletely crushed raw materials and slurry clusters are mixed in the pulped slurry to be made into the food paper is avoided, and the quality of the food paper is improved;
(2) The sizing agents for preparing the food paper are fine sizing agents for finishing beating so as to facilitate dyeing and coloring of the food paper, so that the situation that spots appear after the food paper prepared in the sizing agents subjected to beating is dyed due to incomplete raw material and sizing agent mixing is avoided, and the attractiveness of the dyed food paper is improved;
(3) The slurry which is collected in the liquid collecting box and contains incompletely crushed raw materials and slurry clusters can be subjected to crushing and pulping again, so that the waste of raw materials is avoided;
(4) When the slurry enters the filter box, the rotating plate rotates under the impact force so as to fully mix the slurry and play a role in assisting pulping; in the process of controlling the pushing bar to move up and down by the control motor, the beating tank moves up and down so as to mix the slurry in the beating tank evenly in the up and down shaking process, so that the beating is more uniform and finer slurry is obtained;
(5) When the liquid collecting box pumps liquid to the filter box, the elastic rod is in a free state, the vertical plate positioned on the inner side is attached to the inner wall of the filter box, the vertical plate positioned on the inner side plays an interference role in rotating the rotating plate, the rotating plate cannot rotate, the liquid inlet is sealed by the rotating plate, so that slurry on the outer side of the filter box is prevented from entering, the slurry needing to be crushed or beaten again is discharged efficiently, and the beating efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is a schematic structural view of the beating tank of the present invention;
fig. 4 is a schematic cross-sectional structure of the beating tank of the present invention;
fig. 5 is a schematic structural view of the beater bar of the present invention;
FIG. 6 is a schematic view of the structure of the liquid inlet of the present invention;
FIG. 7 is a schematic view of a liquid inlet according to a second embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a liquid inlet according to a second embodiment of the present invention;
fig. 9 is a schematic cross-sectional view of a liquid inlet according to a second embodiment of the present invention.
The reference numerals in the figures illustrate:
1 a portal frame, 11 a moving frame, 12 a connecting column, 13 a pushing bar, 14 a control motor, 15 a supporting plate,
2 beating tank, 21 beating rod, 211 beating cross rod, 212 filtering box, 213 liquid inlet, 214 filtering hole, 215 liquid pumping pipe, 216 rotating motor, 217 motor base, 218 rotating plate, 219 rotating shaft, 22 discharging pipeline, 23 limiting plate, 24 elastic rod, 25 feeding hole,
3 cat ladder,
4, a liquid collecting box and a 41 pressing plate.
Detailed Description
First embodiment: referring to fig. 1-6, a slurry treatment device for a food paper preparation process comprises a portal frame 1, a pulping tank 2, a ladder stand 3 and a liquid collecting tank 4.
The portal frame 1 is made of rigid materials, and a moving chamber with an open upper end is arranged in the middle of the portal frame 1; the left side and the right side of the movement chamber are provided with movement sliding grooves, and each movement sliding groove is vertically arranged; the two moving sliding grooves are symmetrically arranged by taking the axis in the vertical direction of the moving chamber as an axis.
The pulping tank 2 is coaxially arranged in the motion chamber, a cylindrical pulping chamber is formed in the pulping tank 2 for pulping, at least one feeding hole 25 is formed in the upper side of the pulping tank 2, and the feeding hole 25 is communicated with the pulping chamber so that external pulp enters the pulping chamber through the feeding hole 25;
two liquid suction ports are formed in the side face of the pulping tank 2, and penetrate through the inner side and the outer side of the pulping tank 2 so that each liquid suction port is communicated with the outside and the pulping chamber; the two liquid suction ports are symmetrically arranged by taking the axis in the vertical direction of the moving cavity as an axis;
the periphery of the beating tank 2 is fixedly connected with a fixing frame 11, the fixing frame 11 is made of rigid materials, and the fixing frame 11 is fixedly arranged on the periphery of the lower end part of the beating tank 2 so as to synchronize the movement between the fixing frame 11 and the beating tank 2;
connecting columns 12 are fixedly arranged on the left side and the right side of the fixing frame 11 respectively, and the two connecting columns 12 are arranged in an axisymmetric manner by taking the axis of the pulping tank 2 in the vertical direction; the connection post 12 is made of a rigid material, and the connection between the connection post 12 and the fixing frame 11 may be welded so as to synchronize the movement between the connection post 12 and the fixing frame 11;
each connecting column 12 is fixedly connected with a pushing bar 13, the pushing bars 13 are made of rigid materials, each pushing bar 13 is vertically arranged, one side surface of each pushing bar 13 is a tooth surface, the tooth surface is a surface which is not connected with the connecting column 12, and the tooth surface of each pushing bar 13 has the same size;
each connecting column 12 is connected with the output end of the control motor 14 through the tooth surface engagement of the connecting columns, so that the rotation of the output end of the control motor 14 controls the up-and-down movement of the pushing bar 13, and the motor 14 controls the up-and-down movement of the beating pot 2; it should be noted that the rotation frequencies of the two control motors 14 are the same, so that the movements of the two pushing bars 13 are synchronized, so as to avoid the occurrence of damage to the beater 2 caused by imbalance of the up-and-down movement of the beater 2.
The lower side of each control motor 14 is provided with a supporting plate 15, the supporting plate 15 is made of rigid materials, the supporting plate 15 is fixedly connected with the portal frame 1, and the upper surface of the supporting plate 15 is abutted with the lower end surface of the corresponding control motor 14, so that the supporting plate 15 plays a supporting role on the corresponding control motor 14.
The quantity of cat ladder 3 is at least one, and the upper end and the portal frame 1 fixed connection of cat ladder 3 to make the user can climb to the upside of cat ladder 3, in order to observe the operating condition of beating jar 2 in the motion chamber, in order to record and maintain.
The pulping chamber is internally and coaxially provided with a pulping rod 21, the pulping rod 21 is vertically arranged, and the periphery of the pulping rod 21 is fixedly connected with a pulping cross rod 211 and a filtering box 212.
The beating cross bars 211 are arranged in the beating chamber, the number of the beating cross bars 211 is multiple, the beating cross bars 211 take the axis of the beating rod 21 as the shaft, the beating cross bars 211 are symmetrically arranged on the front side and the rear side of the beating rod 21, the beating cross bars 211 on the same side are uniformly arranged along the length direction of the beating rod 21, and the length direction of each beating cross bar 211 is perpendicular to the axis direction of the beating rod 21.
The filter boxes 212 are arranged in the beating chamber, the number of the filter boxes 212 is two, the structures of the two filter boxes 212 are the same, and the two filter boxes 212 are arranged on the left side and the right side of the beating rod 21 in a central symmetry way by taking the axis of the beating rod 21 as the shaft;
a plurality of liquid inlets 213 are formed in one side surface of the filter box 212, each liquid inlet 213 is rectangular, each liquid inlet 213 penetrates through the inner side and the outer side of the filter box 212, and the liquid inlets 213 are uniformly arranged along the length direction of the beating rod 21;
a rotating plate 218 is arranged in each liquid inlet 213, a rotating shaft 219 is connected between the rotating plate 218 and the filter box 212, the length direction of the rotating shaft 219 is consistent with the length direction of the liquid inlet 213, the rotating shaft 219 is fixedly connected with the filter box 212, and the rotating shaft 219 is rotationally connected with the rotating plate 218, so that the rotating plate 218 can rotate around the rotating shaft 219, and the rotating plate 218 can rotate in the liquid inlet 213; the dimensions of the rotor plate 218 are matched to the dimensions of the inlet 213 such that when the rotor plate 218 is stationary, the rotor plate 218 closes the inlet 213.
The other side surface of the filter box 212 is provided with a plurality of filter holes 214, the side surface is opposite to the side surface where the liquid inlet 213 is positioned, and the aperture of the filter holes 214 does not allow the incompletely crushed raw materials and pulp to pass through;
the side of the filter box 212 far away from the beating rod 21 is provided with a liquid suction pipe 215, the liquid suction pipe 215 penetrates through the inner side and the outer side of the filter box 212, the set height of the liquid suction pipe 215 corresponds to the set height of the liquid suction port, the size of the liquid suction pipe 215 is matched with the size of the liquid suction port, the end face of the liquid suction pipe 215 far away from the filter box 212 is connected with the inner wall of the beating tank 2 in a fitting way, so that the end part of the liquid suction pipe 215 far away from the filter box 212 can be rotated to the liquid suction port, and the liquid suction pipe 215 is communicated with the liquid suction port, so that the filter box 212 is communicated with the liquid suction port.
The lower side of the beating pot 2 is provided with a rotating motor 216, and the output end of the rotating motor 216 is fixedly connected with the lower end of the beating rod 21 so that the rotating motor 216 controls the beating rod 21 to rotate around the shaft; the rotation direction of the rotation motor 216 is opposite to the direction from the liquid inlet 213 side to the filter hole 214 side of the filter box 212, so that when the rotation motor 216 controls the beating rod 21 to rotate around the shaft, the slurry in the beating pot 2 enters the filter box 212 from the liquid inlet 213 and is discharged from the filter hole 214;
the motor seat 217 is fixedly connected to the lower side of the rotary motor 216, the motor seat 217 is fixedly connected to the lower bottom surface of the beater 2, and the motor seat 217 is fixedly connected to the moving frame 11, so that the motor seat 217 is fixedly connected to the rotary motor 216 and the beater 2, and the rotary motor 216 and the beater 2 move synchronously.
The liquid collecting box 4 is arranged at one side of the beating tank 2, and a cavity is formed in the liquid collecting box 4 for storing substances; a liquid discharge outlet is formed in the side wall of the liquid collection tank 4 and used for discharging liquid in the liquid collection tank 4, and a valve used for controlling the liquid discharge outlet to be opened and closed is arranged in the liquid discharge outlet;
the inside of the liquid collection box 4 is provided with a pressing plate 41, the pressing plate 41 is made of rigid materials, the size of the pressing plate 41 is matched with that of the cavity inside the liquid collection box 4, so that the pressing plate 41 is horizontally arranged in the liquid collection box 4, and the side surface of the pressing plate 41 is attached to the inner wall of the liquid collection box 4; the pressing plate 41 is in sealed sliding connection with the inner wall of the liquid collecting box 4;
the pressing plate 41 is fixedly connected with a discharge pipeline 22, and one end of the discharge pipeline 22 penetrates through the upper side and the lower side of the pressing plate 41 so that the discharge pipeline 22 is communicated with the inside of the liquid collecting tank 4; the other end of the discharge pipe 22 is matched with the size of the liquid suction port, and the other end of the discharge pipe 22 is fixedly arranged in the liquid suction port so that the liquid collecting tank 4 is communicated with the pulping tank 2.
A valve is provided in the discharge pipe 22, and the valve controls the communication in the discharge pipe 22.
A process for preparing food paper by at least using the slurry treatment device comprises the following steps:
s1: mixing bleached chemical softwood or hardwood pulp plates according to a mass ratio of 4:6, pulping by the pulp treatment device, wherein the pulping concentration is 3.8%, the pulping degree is 35 DEG SR, and finally the pulp enters a pulp mixing tank A;
s2: adding cationic starch with the dosage of 0.15 percent (relative to the mass of the absolute dry fiber), a wet strength agent with the dosage of 0.15 percent (relative to the mass of the absolute dry fiber) and AKD with the dosage of 0.1 percent (relative to the mass of the absolute dry fiber) into a pulp preparing tank A, and pumping the pulp into the pulp forming tank A after uniform mixing;
s3: mixing chemical softwood or hardwood pulp plates according to a mass ratio of 1:9, pulping by the pulp treatment device, wherein the pulping concentration is 4.5%, the pulping degree is 55 DEG SR, and finally the pulp enters a pulp mixing tank B;
s4: adding cationic starch, sizing agent and wet strength agent into a sizing tank B, uniformly mixing, and pumping the sizing agent into a sizing tank B;
s5: adding light calcium carbonate and kaolin into a filler tank, and adopting a filler suspension with the mass concentration of 10%; adding 1% of gelatinized cationic starch and oil-proofing agent into the filler mixed suspension to fully mix the gelatinized cationic starch and oil-proofing agent with the filler suspension, wherein the mass ratio of the cationic starch to the oil-proofing agent is 25:1;
s6: the sizing agent of the sizing agent pool A and the sizing agent of the sizing agent pool B are respectively subjected to concentration adjustment and slag removal, then cationic polyacrylamide is added into a sizing inlet of a pressure screen, the dosage is 0.01 percent (relative to the mass of absolute dry fibers), and then screening is carried out;
s7: the slurry in the slurry forming pond A enters the lower layer of the multi-layer slurry box, the slurry in the slurry forming pond B enters the upper layer of the multi-layer slurry box, the modified filler suspension enters the middle layer of the multi-layer slurry box after concentration adjustment, and the solid mass ratio of the slurry of the upper layer, the middle layer and the lower layer is 40:8:52, the filling amount of the filler is 8.6%; the concentration of the upper slurry of the multilayer slurry box is 0.5%, the concentration of the middle modified filler suspension is 0.5%, and the concentration of the lower slurry is 0.4%; the ratio of the pulp speed to the forming wire speed is 0.90 when the paper machine is used for manufacturing paper;
s8: after being formed and pressed by a fourdrinier, a yankee dryer and a common dryer are combined for drying, and the front surface of paper (the contact surface of the paper and a blanket in the papermaking process) contacts the surface of the dryer during drying, and the surface of the dryer is made of alloy steel; and (3) carrying out surface sizing between the yankee dryer and the common dryer, wherein cationic starch is adopted for surface sizing, the sizing amount is 1g/m < 2 >, and finally, the paper web is curled, rewound and packed to obtain the low-ration waxless functional food packaging paper with the three-layer composite structure.
The step of beating by the slurry treatment device includes:
z1: filling a certain amount of pulped softwood pulp or hardwood pulp into the pulping tank 2 through a feed inlet 25; at this time, the liquid suction pipe 215 is positioned at the liquid suction port, at this time, the liquid suction pipe 215 is communicated with the liquid suction port, and the liquid suction port is communicated with the discharge pipeline 22; at this time, the valve in the drain outlet is closed, and the valve of the drain pipe 22 is opened;
z2: the user simultaneously turns on the rotating motor 216 and the control motor 14, so that the rotating motor 216 controls the beating rod 21 to rotate around the shaft, and the control motor 14 controls the pushing bar 13 to move up and down to control the beating pot 2 to move up and down;
at this time, the beating rod 21 rotates, and the beating cross bar 211 beating the slurry in the beating tank 2; along with the rotation of the beating rod 21, the pulp enters the filter box 212 from the liquid inlet 213 and is discharged from the filter hole 214, and at the moment, the incompletely crushed raw materials and pulp clusters in the pulp cannot be discharged through the filter hole 214, and the incompletely crushed raw materials and pulp clusters are all remained in the filter box 212;
in the process of controlling the up-and-down movement of the pushing bar 13 by the control motor 14, the pulping tank 2 moves up and down so as to mix the pulp in the pulping tank 2 evenly in up-and-down shaking, so that the pulping is more uniform and finer pulp is obtained;
z3: the beating tank 2 works for 30 minutes, the number of turns of the beating rod 21 is an integer, the slurry in the beating tank 2 is beaten, the rotating motor 216 and the control motor 14 are turned off, the valve in the liquid discharge outlet is controlled to be closed, and the valve of the discharge pipeline 22 is kept open;
z4: the control motor 14 is started to control the beating pot 2 to move upwards, and as the discharge pipeline 22 is fixedly connected with the beating pot 2, the discharge pipeline 22 and the beating pot 2 synchronously move upwards, the discharge pipeline 22 controls the pressing plate 41 to synchronously move upwards, and the air pressure in the liquid collecting tank 4 is reduced in the process of the up-down movement of the pressing plate 41, so that the slurry containing incompletely crushed raw materials and slurry clusters collected in the filter tank 212 is pumped into the liquid collecting tank 4;
z5: controlling the valve in the liquid discharge outlet to be opened, and controlling the valve of the discharge pipeline 22 to be opened; the control motor 14 controls the pulping tank 2 to move downwards to control the pressing plate 41 to move downwards so as to discharge the slurry containing the incompletely disintegrated raw materials and the pulp clusters collected in the liquid collecting box 4 to re-disintegrate and pulp the slurry, thereby avoiding the waste of raw materials and simultaneously avoiding the influence of the incompletely disintegrated raw materials and the pulp clusters on the quality of products;
z6: the slurry left in the pulping tank 2 is pulped slurry for the next process treatment.
Specific embodiment II: unlike the first embodiment, the step of performing the beating process by the above slurry processing apparatus includes:
n1: filling a certain amount of pulped softwood pulp or hardwood pulp into the pulping tank 2 through a feed inlet 25; at this time, the liquid suction pipe 215 is positioned at the liquid suction port, at this time, the liquid suction pipe 215 is communicated with the liquid suction port, and the liquid suction port is communicated with the discharge pipeline 22; at this time, the valve in the drain outlet is closed, and the valve of the drain pipe 22 is opened;
n2: the user simultaneously turns on the rotating motor 216 and the control motor 14, so that the rotating motor 216 controls the beating rod 21 to rotate around the shaft, and the control motor 14 controls the pushing bar 13 to move up and down to control the beating pot 2 to move up and down;
and N3: the rotary motor 216 controls the beating rod 21 to stop working after rotating for 100 circles, and controls the motor 14 to stop working; at this time, the valve in the liquid discharge outlet is controlled to be closed, the valve in the liquid discharge pipeline 22 is opened, the control motor 14 firstly controls the pulping tank 2 to move downwards and then controls the pulping tank 2 to move upwards, so as to control the pressing plate 41 to move downwards, so that the gas in the liquid collection tank 4 is flushed into the pulping tank 2 to promote the mixing of the slurry in the pulping tank 2, the pressing plate 41 is controlled to move upwards again, and at this time, the air pressure in the liquid collection tank 4 is reduced, so that the slurry containing incompletely crushed raw materials and slurry clusters collected in the filter tank 212 is pumped into the liquid collection tank 4;
n4: discharging the slurry in the header tank 4;
n5: repeating N2 to N4; so that the pulp in the pulping tank 2 is fully pulped;
n6: the slurry left in the final pulping tank 2 is pulped slurry for the next process treatment.
Third embodiment: on the basis of the first embodiment, please refer to fig. 7-8;
a limiting assembly is arranged on the lower side of each rotating plate 218, and comprises a limiting plate 23;
the number of limiting plates 23 positioned on the same filter box 212 is equal to the number of rotating plates 218; each limiting plate 23 is arranged on the lower side of the corresponding rotating plate 218, and each limiting plate 23 comprises a transverse plate and two vertical plates respectively connected to two sides of the transverse plate; the transverse plates are embedded in the tank wall of the filter tank 212, and penetrate through the inner side and the outer side of the filter tank 212, so that one vertical plate is arranged on the inner wall of the filter tank 212, and the other vertical plate is arranged on the outer side of the filter tank 212; the cross plate is slidably coupled to the filter box 212 such that the cross plate can move in a direction toward or away from the interior chamber of the filter box;
the upper end surfaces of the risers located on the outside are lower than the lower end surfaces of the corresponding swivel plates 218 so that the presence of the risers does not interfere with the rotation of the swivel plates 218;
the upper end faces of the risers located on the inside are higher than the lower end faces of the corresponding swivel plates 218, so that the presence of said risers may interfere with the rotation of the swivel plates 218;
an elastic rod 24 is fixedly connected between the outer vertical plate and the outer surface of the filter box 212, when the elastic rod 24 is in a free state, the inner vertical plate is attached to the inner wall of the filter box 212, and at the moment, the rotation of the inner vertical plate counter-rotating plate 218 plays an interference role; when the cross plate moves in a direction approaching the inner chamber of the filter box, the elastic rod 24 is in a contracted state, and the outer vertical plate is attached to the outer wall of the filter box 212, so that the inner vertical plate is located at a certain distance from the rotating plate 218, and the rotation of the rotating plate 218 is not interfered.
Working principle:
when beating, the beating rod 21 rotates, the transverse plate and the vertical plate positioned at the outer side move towards the direction close to the inner cavity of the filter box 212 under the action of the pressure of the slurry, the elastic rod 24 is in a contracted state, the vertical plate positioned at the outer side is attached to the outer wall of the filter box 212, the vertical plate positioned at the inner side is in a certain distance from the rotating plate 218, the rotating plate 218 does not interfere with the rotation, and the rotating plate 218 rotates at the moment, so that the slurry entering the filter box 212 is fully stirred;
when the liquid collecting box 4 pumps liquid to the filter box 212, the elastic rod 24 is in a free state, the vertical plate positioned on the inner side is attached to the inner wall of the filter box 212, at the moment, the vertical plate positioned on the inner side has an interference effect on the rotation of the rotating plate 218, the rotating plate 218 cannot rotate, and the rotating plate 218 seals the liquid inlet 213 so as to prevent the slurry on the outer side of the filter box 212 from entering, efficiently discharge the slurry needing to be crushed or beaten again, and improve the beating efficiency.
Claims (10)
1. Pulp treatment device of food paper preparation process, including being used for the beating jar (2) of beating, its characterized in that: the beating tank (2) is fixedly connected with the output end of the motion mechanism, so that the beating tank (2) has the capability of moving up and down in the vertical direction;
a beating rod (21) is coaxially arranged in the beating tank (2), the beating rod (21) has the capability of rotating around an axis, and at least one filter box (212) is fixedly connected to the periphery of the beating rod (21); a plurality of liquid inlets (213) are formed in one side face of each filter box (212), a plurality of filter holes (214) are formed in the other side face of each filter box (212), the side faces are opposite to the side face where the liquid inlets (213) are formed, and the aperture of each filter hole (214) does not allow incomplete raw materials and slurry clusters to pass through;
the rotation direction of the beating rod (21) is opposite to the direction of the filter box (212) from the liquid inlet (213) side to the filter hole (214) side;
the outside of the beating tank (2) is provided with a liquid collecting box (4), the liquid collecting box (4) is communicated with a filter box (212), and the beating tank (2) moves up and down so that the liquid collecting box (4) has liquid pumping capacity.
2. A pulp treatment device for a process of making a food paper according to claim 1, wherein: a liquid suction pipe (215) is arranged on the side surface of the filter box (212) far away from the beating rod (21); the liquid collecting box (4) is arranged at one side of the pulping tank (2), and a cavity is formed in the liquid collecting box (4); a liquid discharge outlet is formed in the side wall of the liquid collecting box (4), and a valve for controlling the liquid discharge outlet to be opened and closed is arranged in the liquid discharge outlet;
a pressing plate (41) is arranged in the liquid collecting box (4), the pressing plate (41) is horizontally arranged in the liquid collecting box (4), and the side surface of the pressing plate (41) is attached to the inner wall of the liquid collecting box (4); the pressing plate (41) is in sealed sliding connection with the inner wall of the liquid collecting box (4); the pressing plate (41) is fixedly connected with a discharge pipeline (22), and the position of the discharge pipeline (22) corresponds to the position of the liquid suction pipe (215); one end of the discharge pipeline (22) penetrates through the upper side and the lower side of the pressing plate (41), and the other end of the discharge pipeline (22) is fixedly connected with the beating tank (2) and penetrates through the inner side and the outer side of the beating tank (2).
3. A pulp treatment device for a process of making a food paper according to claim 1, wherein: the movement mechanism comprises a connecting column (12) and a control motor (14); the number of the connecting columns (12) is two, and the two connecting columns (12) are respectively and symmetrically arranged on two sides of the beating tank (2) by taking the axis of the beating tank (2) as an axis; each connecting column (12) is connected with a pushing bar (13), the pushing bars (13) are vertically arranged, and one side surface of each pushing bar (13) is a tooth surface; the output end of the control motor (14) is in meshed connection with the pushing bar (13) so that the control motor (14) controls the pushing bar (13) to move up and down; the rotational frequency of each control motor (14) is the same.
4. A pulp treatment device for a process of making a food paper according to claim 1, wherein: the number of the filter boxes (212) is two, the structures of the two filter boxes (212) are the same, the two filter boxes (212) take the axis of the beating rod (21) as the shaft, and the two filter boxes are arranged on the left side and the right side of the beating rod (21) in a central symmetry mode.
5. A pulp treatment device for a process of making a food paper according to claim 1, wherein: the periphery fixedly connected with beating horizontal pole (211) of beating pole (21), the quantity of beating horizontal pole (211) is many, and the axis that many beating horizontal poles (211) used beating pole (21) is the axle, and the symmetry sets up in the front and back both sides of beating pole (21), and the length direction that the beating pole (21) was followed to many beating horizontal poles (211) that are located homonymy evenly sets up, and the length direction of every beating horizontal pole (211) is perpendicular with the axis direction of beating pole (21).
6. A pulp treatment device for a process of making a food paper according to claim 1, wherein: a rotating plate (218) is arranged in each liquid inlet (213), a rotating shaft (219) is connected between the rotating plate (218) and the filter box (212), the rotating shaft (219) is fixedly connected with the filter box (212), and the rotating shaft (219) is rotationally connected with the rotating plate (218) so that the rotating plate (218) can rotate around the rotating shaft (219); the dimensions of the rotor plate (218) are matched to the dimensions of the inlet (213) such that when the rotor plate (218) is stationary, the rotor plate (218) closes the inlet (213) where it is located.
7. A pulp processing apparatus for a food paper manufacturing process according to claim 6, wherein: a limiting plate (23) is arranged on the lower side of each rotating plate (218); each limiting plate (23) comprises a transverse plate and two vertical plates respectively connected to two sides of the transverse plate; the transverse plates are embedded in the wall of the filter box (212), and penetrate through the inner side and the outer side of the filter box (212); the cross plate is in sliding connection with the filter box (212) so that the cross plate can move towards or away from the inner cavity of the filter box;
the upper end surfaces of the risers positioned on the outer sides are lower than the lower end surfaces of the corresponding rotating plates (218) so that the existence of the risers does not interfere with the rotation of the rotating plates (218); the upper end surface of the vertical plate positioned on the inner side is higher than the lower end surface of the corresponding rotating plate (218);
an elastic rod (24) is fixedly connected between the outer side vertical plate and the outer surface of the filter box (212), and when the elastic rod (24) is in a free state, the inner side vertical plate is attached to the inner wall of the filter box (212), and at the moment, the rotation of the inner side vertical plate counter-rotating plate (218) plays an interference role.
8. A process for producing a food paper, which is a process for producing a food paper by a slurry treatment apparatus for a food paper production process according to any of claims 1 to 7, comprising: mixing bleached chemical softwood or hardwood pulp plates in proportion for pulping; pulping the obtained pulp by a pulp treatment device in the preparation process of food paper to obtain pulped pulp and pulp to be subjected to secondary treatment, which is mixed with incompletely disintegrated raw materials and pulp clusters; and (3) forming and squeezing the pulped pulp by a fourdrinier machine, and drying by a dryer to obtain the finished food paper.
9. The process for preparing a food paper according to claim 8, wherein: the step of pulping the obtained pulp by a pulp treatment device in the food paper preparation process comprises the following steps:
z1: filling a certain amount of crushed softwood pulp or hardwood pulp into the pulping tank (2);
z2: the beating rod (21) is controlled to rotate around the shaft, and the beating tank (2) is controlled to move up and down by the moving mechanism;
at the moment, the beating rod (21) rotates to beat the slurry in the beating tank (2); the slurry enters the filter box (212) from the liquid inlet (213) and is discharged from the filter holes (214) so that the incompletely crushed raw materials and slurry clusters are all remained in the filter box (212);
z3: ensuring that the number of turns of the beating rod (21) is an integer, and finishing beating of the slurry in the beating tank (2);
z4: controlling the beating tank (2) to move upwards so as to enable the slurry which is collected in the filter box (212) and contains the incompletely crushed raw materials and the slurry clusters to be pumped into the liquid collecting box (4);
z5: controlling the discharge of the slurry containing incompletely crushed raw materials and slurry clusters collected in the liquid collecting box (4) so as to re-crush and pulp the slurry;
z6: the slurry left in the pulping tank (2) is pulped slurry for the next process treatment.
10. The process for preparing a food paper according to claim 8, wherein: the step of pulping the obtained pulp by a pulp treatment device in the food paper preparation process comprises the following steps:
n1: filling a certain amount of pulped softwood pulp or hardwood pulp into the pulping tank 2; at this time, the liquid suction pipe (215) is positioned at the liquid suction port, at this time, the liquid suction pipe (215) is communicated with the liquid suction port, and the liquid suction port is communicated with the discharge pipeline (22); at the moment, a valve in the liquid discharge outlet is closed, and a valve of the discharge pipeline (22) is opened;
n2: the rotating motor (216) controls the beating rod (21) to rotate around the shaft, and the control motor (14) controls the beating pot (2) to move up and down;
and N3: the rotary motor (216) controls the beating rod (21) to stop working after rotating for 100 circles, and controls the motor (14) to stop working; the valve in the liquid discharge outlet is controlled to be closed, the valve in the liquid discharge pipeline (22) is controlled to be opened, the control motor (14) firstly controls the beating tank (2) to move downwards and then controls the beating tank (2) to move upwards so as to control the pressing plate (41) to move downwards, so that gas in the liquid collecting tank (4) is flushed into the beating tank (2) to promote slurry mixing in the beating tank (2), the pressing plate (41) is controlled to move upwards again, and at the moment, the air pressure in the liquid collecting tank (4) is reduced so that the slurry containing incompletely crushed raw materials and slurry clusters collected in the filter tank (212) is pumped into the liquid collecting tank (4);
n4: discharging the slurry in the header tank (4);
n5: repeating N2 to N4; so that the slurry in the pulping tank (2) is fully pulped;
n6: the slurry left in the final pulping tank (2) is pulped slurry for the next process treatment.
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| CN202310753117.6A CN116575252B (en) | 2023-06-26 | 2023-06-26 | Food paper preparation technology and slurry treatment device in preparation process |
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| CA348802A (en) * | 1935-03-12 | Donald Wells Harold | Pulp selector | |
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| CN217829087U (en) * | 2022-07-15 | 2022-11-18 | 新疆骆甘霖乳业有限公司 | Impurity filtering device is used in camel milk product processing |
| CN116043056A (en) * | 2022-11-10 | 2023-05-02 | 浙江亨达铝业有限公司 | Slag removal system for aluminum alloy production |
| CN219186106U (en) * | 2023-01-04 | 2023-06-16 | 河北九维生物科技开发有限公司 | Jujube thick liquid filter equipment |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA348802A (en) * | 1935-03-12 | Donald Wells Harold | Pulp selector | |
| KR100815426B1 (en) * | 2007-12-27 | 2008-03-20 | 한국 노스케스코그 주식회사 | Screen apparatus for paper-making |
| CN108130788A (en) * | 2017-12-21 | 2018-06-08 | 浙江恒达新材料股份有限公司 | A kind of preparation method of waterproof and oilproof food wrapper |
| CN112144310A (en) * | 2020-09-28 | 2020-12-29 | 山东凯信重机有限公司 | Beating equipment and method for toilet paper machine |
| CN217829087U (en) * | 2022-07-15 | 2022-11-18 | 新疆骆甘霖乳业有限公司 | Impurity filtering device is used in camel milk product processing |
| CN116043056A (en) * | 2022-11-10 | 2023-05-02 | 浙江亨达铝业有限公司 | Slag removal system for aluminum alloy production |
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