Multi-layer corrugated paper produced from waste paper raw materials and its production process

Abstract

The present invention relates to the technical field of corrugated paper, and specifically to a multi-layer corrugated paper produced from waste paper raw materials and a production process thereof, including a first surface paper layer and a second surface paper layer; a honeycomb skeleton layer is provided on the top of the first surface paper layer; the honeycomb skeleton layer is provided with a plurality of honeycomb holes; a filling layer is provided in the honeycomb holes; the honeycomb skeleton layer is made of a first slurry and a stiffening agent; the first surface paper layer and the second surface paper layer are made of a second slurry; and the filling layer is made of a third slurry. The present invention adopts the first slurry with the highest beating degree and a stiffening agent to form a honeycomb skeleton layer, adopts the second slurry with the second highest beating degree to form the first surface paper layer and the second surface paper layer, and adopts the third slurry with the lowest beating degree to form the filling layer. It is not necessary to use the first slurry with the highest beating degree in all positions, and it has sufficient strength, which can effectively reduce the time of waste paper raw material production and the wastewater generated in the waste paper raw material production.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated paper, and in particular to multi-layer corrugated paper produced from waste paper raw materials and a production process thereof. Background Art

[0002] In the process of recycling waste paper using waste paper as raw material, it is usually necessary to first crush the waste paper and then obtain pulp raw material for papermaking through beating. However, the existing process does not use pulp with different beating degrees in combination, but requires all waste paper fibers to be dissociated to a higher beating degree. This process not only consumes a lot of water resources and energy, but also produces a large amount of alkaline wastewater. This practice is not conducive to environmental protection and does not conform to the principle of sustainable development. Therefore, it has obvious deficiencies in terms of environmental friendliness and economy. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a multi-layer corrugated paper produced from waste paper raw materials and a production process thereof.

[0004] The object of the present invention is achieved through the following technical scheme: a multi-layer corrugated paper produced from waste paper raw materials, comprising a first surface paper layer and a second surface paper layer; a honeycomb skeleton layer is provided on the top of the first surface paper layer; the honeycomb skeleton layer is provided with a plurality of honeycomb holes; a filling layer is provided in the honeycomb holes; the second surface paper layer is provided on the top of the honeycomb skeleton layer and the top of the filling layer;

[0005] The honeycomb skeleton layer is made of a first slurry and a stiffener; the first surface paper layer and the second surface paper layer are made of a second slurry; the filling layer is made of a third slurry; the beating degrees of the first slurry, the second slurry and the third slurry decrease in sequence.

[0006] A production process for producing multi-layer corrugated paper made from waste paper raw materials, comprising the following steps:

[0007] S1, crushing the waste paper and mixing it with water and a wet strength dissociating agent to obtain a mixture;

[0008] S2, placing the mixed material into a multi-stage pulping machine, thereby obtaining a first pulp having a beating degree that decreases successively, a second pulp having a beating degree, and a third pulp;

[0009] S3, adding a stiffening agent to the first slurry to obtain a composite slurry; using the composite slurry as a raw material, pressing and preliminarily dehydrating to form a honeycomb skeleton layer;

[0010] S4, using the second slurry as a raw material to perform pressing and preliminary dehydration to form a first surface paper layer; and stacking the honeycomb skeleton layer on the first surface paper layer;

[0011] S5, filling the third slurry into the honeycomb holes, pressing and preliminarily dehydrating to form a composite layer;

[0012] S6, using the second slurry as a raw material to perform pressing and preliminary dehydration to form a second surface paper layer; and laminating the second surface paper layer on the composite layer;

[0013] S7. After being heated and completely dehydrated, a multi-layer corrugated paper produced from the waste paper raw material is formed.

[0014] In a further technical solution,

[0015] In step S1, the waste paper is crushed and mixed with water and a wet strength dissociator in a weight ratio of 1:4:0.2, and stirred at a rate of 20-50 r / min for 45-60 min to obtain the mixture;

[0016] In step S2, the mixed material is placed in a multi-stage pulping machine, and 0.15-0.25% of a dispersant and 0.25-0.45% of a softener are added by weight, and stirred at a rate of 120-150 r / min for 45-65 min; thereby obtaining a first slurry, a second slurry, and a third slurry with successively decreasing beating degrees;

[0017] In step S3, 0.5-1% by weight of a stiffening agent is added to the first slurry, and the mixture is stirred at a speed of 25-60 r / min for 15 minutes to obtain a composite slurry.

[0018] In a further technical solution, the multi-stage pulping machine includes a tank body; a first conveying and beating unit, a second conveying and beating unit and a third conveying and beating unit are sequentially arranged in the tank body;

[0019] A feeding cavity is formed between one end of the first conveying and beating unit and the inner wall of the tank body; a first discharging cavity is formed between the other end of the first conveying and beating unit, one end of the second conveying and beating unit and the inner wall of the tank body; a second discharging cavity is formed between the other end of the second conveying and beating unit, one end of the third conveying and beating unit and the inner wall of the tank body; a third feeding cavity is formed between the other end of the third conveying and beating unit and the inner wall of the tank body;

[0020] The tank body is provided with a feed port communicating with the feed cavity, a first discharge port communicating with the first discharge cavity, a second discharge port communicating with the second discharge cavity, and a third discharge port communicating with the third discharge cavity;

[0021] The third slurry is discharged from the first discharge port; the second slurry is discharged from the second discharge port; and the first slurry is discharged from the third discharge port.

[0022] In a further technical solution, the first conveying and beating unit, the second conveying and beating unit and the third conveying and beating unit all include a shell fixedly arranged in the tank body, a first friction disc arranged at one end of the shell and a second friction disc arranged at the other end of the shell; the second friction disc is provided with a first filter plate; the first filter plate is penetrated with a first filter hole; the radius of the first filter hole of the first conveying and beating unit, the radius of the first filter hole of the second conveying and beating unit and the radius of the first filter hole of the third conveying and beating unit decrease successively;

[0023] A beating cavity is formed between the first friction disc, the housing and the second friction disc; a rotor assembly is provided in the beating cavity for sliding and rotating;

[0024] A rotating shaft is provided in the slot body for rotation along the length direction; a motor is provided in the slot body; the output end of the motor is connected to the rotating shaft; the rotating shaft passes through the first friction plate and the second friction plate; and the rotor assembly is matched with the rotating shaft profile.

[0025] In a further technical solution, the first friction disk is provided with a flap which opens toward the beating chamber.

[0026] In a further technical solution, the rotor assembly includes a rotor plate; a second filter plate is provided at one end of the rotor plate close to the second friction disk; a second filter hole is penetrated by the second filter plate; an opening is provided at one end of the rotor plate close to the first friction disk and is arranged opposite to the second filter plate; an adjustment groove is provided between the rotor plate and the opening; a third filter plate is provided in the adjustment groove for lifting and lowering movement; a third filter hole is penetrated by the third filter plate; the radius of the second filter hole is the same as the radius of the third filter hole; the radius of the second filter hole is greater than the radius of the first filter hole; and an adjustment drive assembly is also included for driving the third filter plate to lift and lower in the adjustment groove.

[0027] In a further technical solution, a second cavity is formed between one end of the rotor plate close to the opening and the first friction disk; a second cavity is formed between one end of the rotor plate close to the second filter plate and the second friction disk; both ends of the rotor plate, one end of the first friction disk close to the rotor plate and one end of the second friction disk close to the rotor plate are provided with spoiler strips.

[0028] In a further technical solution, the adjustment drive assembly includes a drive ring rotatably disposed on the rotor plate and a slider movably disposed on the rotor plate;

[0029] The driving ring is provided with an arc-shaped groove; the third filter plate is provided with a limit pin; the limit pin is movably arranged in the arc-shaped groove;

[0030] The driving ring is provided with an inclined groove; the sliding block is provided with a driving pin; the driving pin is movably arranged in the inclined groove; and the rotor plate is provided with a spring sheet abutting against the driving ring.

[0031] In a further technical solution, a rotating frame is rotatably provided on the top of the slider; guide pins are provided at both ends of the rotating frame; a torsion spring is provided between the rotating frame and the slider;

[0032] A first C-shaped groove is provided on the inner wall of one end of the housing close to the first friction disc; a second C-shaped groove is provided on the inner wall of one end of the housing close to the second friction disc; a first sliding groove is provided between one end of the first C-shaped groove and one end of the second C-shaped groove; a second sliding groove is provided between the other end of the first C-shaped groove and the other end of the second C-shaped groove; the first sliding groove and the second sliding groove are arranged alternately;

[0033] The depth of the first C-shaped groove, the depth of the second C-shaped groove and the depth of the second sliding groove are the same; the depth of the first sliding groove is less than the depth of the second sliding groove;

[0034] When the guide pin slides between the first C-shaped groove, the second C-shaped groove and the second sliding groove, the spring sheet abuts against the driving ring, so that the limit pin is arranged at the bottom of the arc groove, so that the third filter plate descends in the adjustment groove, thereby aligning the second filter hole with the third filter hole;

[0035] When the guide pin slides between the first sliding grooves, the slider moves downward, and the driving ring is driven to compress the spring sheet and then rotate under the cooperation of the inclined groove and the driving pin. The third filter plate rises in the adjusting groove through the cooperation of the arc groove and the limit pin, so that the second filter hole and the third filter hole are staggered.

[0036] Compared with the prior art, the advantages of the present invention are as follows: the present invention adopts a first slurry with the highest beating degree and mixes it with a stiffening agent to form a honeycomb skeleton layer, so that the honeycomb skeleton layer has sufficient strength; in addition, a second slurry with the second highest beating degree is used to form a first surface paper layer and a second surface paper layer, and a third slurry with the lowest beating degree is used to form a filling layer. It is not necessary to use the first slurry with the highest beating degree in all positions, and it has sufficient strength, which can effectively reduce the time of waste paper raw material production and the wastewater generated in the waste paper raw material production. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0038] Figure 1 It is a schematic structural diagram of multi-layer corrugated paper of the present invention;

[0039] Figure 2 It is a structural exploded view of the multi-layer corrugated paper of the present invention;

[0040] Figure 3 It is a process flow chart of the production process of the present invention;

[0041] Figure 4 It is a structural schematic diagram of a multi-stage pulping machine of the present invention;

[0042] Figure 5 is a cross-sectional view of a multi-stage pulping machine of the present invention;

[0043] Figure 6 It is a structural schematic diagram of the first conveying and beating unit of the present invention;

[0044] Figure 7 is a structural schematic diagram of the first conveying and beating unit of the present invention from another perspective;

[0045] Figure 8 is a cross-sectional view of the first conveying and beating unit of the present invention;

[0046] Fig. 9 It is a structural schematic diagram of the housing of the present invention;

[0047] Fig.10 is a schematic structural diagram of a rotor assembly of the present invention;

[0048] Fig.11 yes Fig.10 A partial enlarged view of the middle A area;

[0049] Fig.12 is a structural schematic diagram of the rotor assembly of the present invention from another perspective;

[0050] Fig.13 is a cross-sectional view of a rotor assembly of the present invention;

[0051] Fig.14 yes Fig.13 A partial enlarged view of the B area;

[0052] Among them: 11, first paper layer; 12, second paper layer; 13, honeycomb skeleton layer; 14, filling layer; 2, tank body; 21, first discharge cavity; 22, second discharge cavity; 23, third discharge cavity; 24, feed cavity; 25, feed port; 26, first discharge port; 27, second discharge port; 28, third discharge port; 31, first conveying and beating unit; 32, second conveying and beating unit; 33, third conveying and beating unit; 4, shell; 41, first C-shaped groove; 42, second C-shaped groove; 43, first sliding groove; 44, second sliding groove; 51, first friction disc ; 52, flap; 53, second friction disc; 54, first filter plate; 55, first filter hole; 56, spoiler strip; 6, beating chamber; 61, first cavity; 62, second cavity; 63, motor; 64, rotating shaft; 7, rotor plate; 71, second filter plate; 72, second filter hole; 73, opening; 74, adjusting slot; 75, third filter plate; 76, third filter hole; 77, limit pin; 8, drive ring; 81, arc groove; 82, inclined groove; 83, spring; 9, slider; 91, drive pin; 92, rotating frame; 93, guide pin; 94, torsion spring. DETAILED DESCRIPTION

[0053] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0054] Depend on Figure 1 to Figure 2 It can be seen that in the multi-layer corrugated paper produced from a waste paper raw material in this embodiment, a first surface paper layer 11 and a second surface paper layer 12 are included; a honeycomb skeleton layer 13 is provided on the top of the first surface paper layer 11; the honeycomb skeleton layer 13 is provided with a plurality of honeycomb holes; a filling layer 14 is provided in the honeycomb holes; the second surface paper layer 12 is provided on the top of the honeycomb skeleton layer 13 and the top of the filling layer 14;

[0055] The honeycomb skeleton layer 13 is made of a first slurry and a stiffening agent; the first surface paper layer 11 and the second surface paper layer 12 are made of a second slurry; the filling layer 14 is made of a third slurry; the beating degrees of the first slurry, the second slurry and the third slurry decrease in sequence.

[0056] Specifically, the multi-layer corrugated paper produced from waste paper raw materials described in this embodiment is made into a honeycomb skeleton layer 13 by mixing a first pulp with the highest beating degree with a stiffening agent, so that the honeycomb skeleton layer 13 has sufficient strength; in addition, the first surface paper layer 11 and the second surface paper layer 12 are made of a second pulp with the second highest beating degree, and the filling layer 14 is made of a third pulp with the lowest beating degree. It is not necessary to use the first pulp with the highest beating degree in all positions, and it has sufficient strength, which can effectively reduce the production time of waste paper raw materials and the wastewater generated in the production of waste paper raw materials.

[0057] Depend on Figure 3 It can be seen that in a production process for producing multi-layer corrugated paper produced from waste paper raw materials in this embodiment, the following steps are included:

[0058] S1, crushing the waste paper and mixing it with water and a wet strength dissociating agent to obtain a mixture;

[0059] S2, placing the mixed material into a multi-stage pulping machine, thereby obtaining a first pulp having a beating degree that decreases successively, a second pulp having a beating degree, and a third pulp;

[0060] S3, adding a stiffening agent to the first slurry to obtain a composite slurry; using the composite slurry as a raw material, performing pressing and preliminary dehydration to form a honeycomb skeleton layer 13;

[0061] S4, using the second slurry as a raw material to perform pressing and preliminary dehydration to form a first surface paper layer 11; and superimposing the honeycomb skeleton layer 13 on the first surface paper layer 11;

[0062] S5, filling the third slurry into the honeycomb holes, pressing and preliminarily dehydrating to form a composite layer;

[0063] S6, using the second slurry as a raw material to perform pressing and preliminary dehydration to form a second surface paper layer 12; and laminating the second surface paper layer 12 on the composite layer;

[0064] S7. After being heated and completely dehydrated, a multi-layer corrugated paper produced from the waste paper raw material is formed.

[0065] Specifically, this embodiment uses a multi-stage pulping machine to generate a first pulp, a second pulp, and a third pulp with decreasing beating degrees, and the first pulp with the highest beating degree is mixed with a stiffening agent to form a honeycomb skeleton layer 13, so that the honeycomb skeleton layer 13 has sufficient strength; in addition, the second pulp with the second highest beating degree is used to form the first surface paper layer 11 and the second surface paper layer 12, and the third pulp with the lowest beating degree is used to form the filling layer 14. It is not necessary to use the first pulp with the highest beating degree in all positions, and it has sufficient strength, which can effectively reduce the production time of waste paper raw materials and the wastewater generated in the production of waste paper raw materials.

[0066] In a production process for producing multi-layer corrugated paper produced from waste paper raw materials of this embodiment, in step S1, the waste paper is crushed and mixed with water and a wet strength debonding agent in a weight ratio of 1:4:0.2, and stirred at a rate of 20-50 r / min for 45-60 min to obtain the mixture;

[0067] In step S2, the mixed material is placed in a multi-stage pulping machine, and 0.15-0.25% of a dispersant (such as polyethylene oxide, polyacrylamide, etc.) and 0.25-0.45% of a softener (such as sodium alginate, sodium alkyl sulfonate, etc.) are added by weight percentage, and stirred at a speed of 120-150 r / min for 45-65 minutes; thereby obtaining a first pulp, a second pulp, and a third pulp with successively decreasing beating degrees;

[0068] In step S3, 0.5-1% by weight of a stiffening agent is added to the first slurry, and the mixture is stirred at a speed of 25-60 r / min for 15 minutes to obtain a composite slurry.

[0069] Depend on Figures 4 to 14 It can be seen that in a production process for producing multi-layer corrugated paper produced from waste paper raw materials in this embodiment, the multi-stage pulping machine includes a tank body 2; the tank body 2 is provided with a first conveying and beating unit 31, a second conveying and beating unit 32 and a third conveying and beating unit 33 in sequence;

[0070] A feed cavity 24 is enclosed between one end of the first conveying and beating unit 31 and the inner wall of the tank body 2; a first discharge cavity 21 is enclosed between the other end of the first conveying and beating unit 31, one end of the second conveying and beating unit 32 and the inner wall of the tank body 2; a second discharge cavity 22 is enclosed between the other end of the second conveying and beating unit 32, one end of the third conveying and beating unit 33 and the inner wall of the tank body 2; a third feed cavity 24 is enclosed between the other end of the third conveying and beating unit 33 and the inner wall of the tank body 2;

[0071] The tank body 2 is provided with a feed port 25 communicating with the feed cavity 24, a first discharge port 26 communicating with the first discharge cavity 21, a second discharge port 27 communicating with the second discharge cavity 22, and a third discharge port 28 communicating with the third discharge cavity 23;

[0072] The third slurry is discharged from the first discharge port 26 ; the second slurry is discharged from the second discharge port 27 ; and the first slurry is discharged from the third discharge port 28 .

[0073] Specifically, in the production process for producing multi-layer corrugated paper from waste paper raw materials described in this embodiment, when it is necessary to beat the first slurry, the second slurry and the third slurry, the mixed material in step S1 is first placed into the feed chamber 24 from the feed port 25, and the mixed material in the feed chamber 24 passes through the first conveying and beating unit 31 to form a third slurry in the first discharge chamber 21, and the third slurry can be discharged from the first discharge port 26; in addition, the third slurry in the first discharge chamber 21 can also pass through the second conveying and beating unit 32 to form a second slurry in the second discharge chamber 22, and the second slurry can be discharged from the second discharge port 27; in addition, the second slurry in the second discharge chamber 22 can also pass through the third conveying and beating unit 33 to form a first slurry in the third discharge chamber 23, and the first slurry is discharged from the third discharge port 28.

[0074] The mixed material fibers are separated into pulps with different degrees of separation through the first conveying and beating unit 31, the second conveying and beating unit 32 and the third conveying and beating unit 33 of the multi-stage pulping machine. The pulps with different degrees of separation are arranged at different positions of the corrugated paper layer to reduce the amount of pulp with a high degree of separation, thereby reducing production energy consumption and wastewater volume.

[0075] In a production process for producing multi-layer corrugated paper produced from waste paper raw materials of the present embodiment, the first conveying and beating unit 31, the second conveying and beating unit 32 and the third conveying and beating unit 33 all include a shell 4 fixedly arranged in the trough body 2, a first friction disc 51 arranged at one end of the shell 4 and a second friction disc 53 arranged at the other end of the shell 4; the second friction disc 53 is provided with a first filter plate 54; the first filter plate 54 is penetrated by a first filter hole 55; the radius of the first filter hole 55 of the first conveying and beating unit 31, the radius of the first filter hole 55 of the second conveying and beating unit 32 and the radius of the first filter hole 55 of the third conveying and beating unit 33 decrease successively;

[0076] A beating chamber 6 is enclosed and formed between the first friction disc 51, the housing 4 and the second friction disc 53; a rotor assembly is provided in the beating chamber 6 for sliding and rotating;

[0077] A rotating shaft 64 is provided in the slot body 2 for rotation along the length direction; a motor 63 is provided in the slot body 2; an output end of the motor 63 is connected to the rotating shaft 64; the rotating shaft 64 is passed through the first friction disc 51 and the second friction disc 53; the rotor assembly is in profile with the rotating shaft 64.

[0078] Specifically, during the beating process, the motor 63 drives the rotating shaft 64 to rotate, thereby causing the rotor assemblies of each conveying and beating unit to rotate. The slurry is beaten during the rotation of the rotor assemblies. Since the radius of the first filter hole 55 of the first conveying and beating unit 31, the radius of the first filter hole 55 of the second conveying and beating unit 32, and the radius of the first filter hole 55 of the third conveying and beating unit 33 decrease successively, the degree of beating of the slurry in the first conveying and beating unit 31, the second conveying and beating unit 32, and the third conveying and beating unit 33 increases successively.

[0079] In a production process for producing multi-layer corrugated paper from waste paper raw materials of this embodiment, the first friction disc 51 is provided with a flap 52 opened toward the beating chamber 6. The above arrangement facilitates the mixed material to enter the beating chamber 6 of the first conveying beating unit 31 from the feed chamber 24.

[0080] In a production process for producing multi-layer corrugated paper produced from waste paper raw materials of the present embodiment, the rotor assembly includes a rotor plate 7; a second filter plate 71 is provided at one end of the rotor plate 7 close to the second friction disk 53; a second filter hole 72 is penetrated by the second filter plate 71; an opening 73 is provided at one end of the rotor plate 7 close to the first friction disk 51 and is arranged opposite to the second filter plate 71; an adjustment slot 74 is provided between the second filter plate 71 and the opening 73; a third filter plate 75 is provided in the adjustment slot 74 for lifting and lowering; a third filter hole 76 is penetrated by the third filter plate 75; the radius of the second filter hole 72 is the same as the radius of the third filter hole 76; the radius of the second filter hole 72 is greater than the radius of the first filter hole 55; and an adjustment drive assembly for driving the third filter plate 75 to lift and lower in the adjustment slot 74 is also included. In a production process for multi-layer corrugated paper produced from waste paper raw materials of the present embodiment, the adjustment drive assembly includes a drive ring 8 rotatably arranged on a rotor plate 7 and a slider 9 movably arranged on the rotor plate 7 for lifting; the drive ring 8 is provided with an arc groove 81; the third filter plate 75 is provided with a limit pin 77; the limit pin 77 is movably arranged in the arc groove 81; the drive ring 8 is provided with an inclined groove 82; the slider 9 is provided with a drive pin 91; the drive pin 91 is movably arranged in the inclined groove 82; the rotor plate 7 is provided with a spring piece 83 abutting against the drive ring 8.In a production process for producing multi-layer corrugated paper produced from waste paper raw materials of the present embodiment, a rotating frame 92 is rotatably provided at the top of the slider 9; guide pins 93 are provided at both ends of the rotating frame 92; a torsion spring 94 is provided between the rotating frame 92 and the slider 9; a first C-shaped groove 41 is provided on the inner wall of one end of the shell 4 close to the first friction disk 51; a second C-shaped groove 42 is provided on the inner wall of one end of the shell 4 close to the second friction disk 53; a first sliding groove 43 is provided between one end of the first C-shaped groove 41 and one end of the second C-shaped groove 42; a second sliding groove 44 is provided between the other end of the first C-shaped groove 41 and the other end of the second C-shaped groove 42; the first sliding groove 43 and the second sliding groove 44 are staggered; the depth of the first C-shaped groove 41, the depth of the second C-shaped groove 42 and the depth of the second sliding groove 44 are equal. The same; the depth of the first sliding groove 43 is less than the depth of the second sliding groove 44; when the guide pin 93 slides between the first C-shaped groove 41, the second C-shaped groove 42 and the second sliding groove 44, the spring piece 83 abuts against the drive ring 8, so that the limit pin 77 is arranged at the bottom of the arc groove 81, so that the third filter plate 75 descends in the adjustment groove 74, so that the second filter hole 72 is aligned with the third filter hole 76; when the guide pin 93 slides between the first sliding grooves 43, the slider 9 moves downward, and the driving ring 8 is driven to compress the spring piece 83 and then rotate under the cooperation of the inclined groove 82 and the driving pin 91, and the third filter plate 75 is raised in the adjustment groove 74 through the cooperation of the arc groove 81 and the limit pin 77, so that the second filter hole 72 is staggered with the third filter hole 76; in addition, a one-way valve can be arranged in the third filter hole 76.

[0081] Specifically, when the rotating shaft 64 drives the rotor plate 7 to rotate, the rotor plate 7 can move forward and backward in the beating chamber 6 , and the beating chamber 6 of the rotor plate 7 is divided into a first cavity 61 and a second cavity 62 .

[0082] When the guide pin 93 moves in the first C-shaped groove 41, that is, when the rotor plate 7 rotates along the first C-shaped groove 41, since the first C-shaped groove 41 is deep, the slider 9 cannot be pressed to move downward. Therefore, under the action of the spring 83, the driving ring 8 is prevented from rotating, so that the limit pin 77 is set at the bottom of the arc groove 81, so that the third filter plate 75 descends in the adjustment groove 74, so that the second filter hole 72 is aligned with the third filter hole 76, and the first cavity 61 and the second cavity 62 are connected through the second filter hole 72 and the third filter hole 76. At this time, the first cavity 61 and the second cavity 62 both perform pulping treatment on the slurry;

[0083] When the guide pin 93 moves to one end of the first C-shaped groove 41, the guide pin 93 enters the first sliding groove 43. Since the first sliding groove 43 is a linear groove, when the rotating shaft 64 continues to drive the rotor plate 7, the rotating shaft 64 moves along the first sliding groove 43 in the direction of the second C-shaped groove 42. Since the direction of the second C-shaped groove 42 is shallow, when the guide pin 93 moves in the first C-shaped groove 41, the slider 9 moves downward, and the driving ring 8 compresses the spring piece 83 and rotates after the cooperation of the inclined groove 82 and the driving pin 91. Through the cooperation of the arc groove 81 and the limit pin 77, the third filter plate 75 rises in the adjusting groove 74, so that the second filter hole 72 and the third filter hole 76 are staggered, and the first cavity 61 and the second cavity 62 are sealed. At this time, the rotor plate 7 is equivalent to a piston head, which can draw the external slurry from the flap 52 into the first cavity 61, and can squeeze the slurry in the second cavity 62 to the outside through the first filter hole 55, thereby realizing the slurry transportation.

[0084] When the guide pin 93 moves from the first sliding groove 43 to the second C-shaped groove 42, the spring 83 drives the drive ring 8 to reset, so that the second filter hole 72 is aligned with the third filter hole 76 again, and the slurry in the first cavity 61 and the second cavity 62 is beaten during the rotation of the rotor plate 7.

[0085] When the guide pin 93 moves to the other end of the second C-shaped groove 42, the guide pin 93 enters the second sliding groove 44. Since the second sliding groove 44 is a linear groove, when the rotating shaft 64 continues to drive the rotor plate 7, the rotating shaft 64 moves along the second sliding groove 44 toward the direction of the first C-shaped groove 41, and at this time, the second filter hole 72 is still aligned with the third filter hole 76 until the guide pin 93 moves back to the first C-shaped groove 41.

[0086] Through the above-mentioned arrangement, the present embodiment enables the rotor plate 7 to beat the slurry when it rotates in the first C-shaped groove 41 and the second C-shaped groove 42, and can convey the slurry when it slides in the first sliding groove 43, so that the multi-stage pulping machine can work continuously. The user only needs to open the corresponding discharge port to obtain the first slurry, the second slurry and the third slurry with different beating degrees.

[0087] In a production process for producing multi-layer corrugated paper produced from waste paper raw materials of this embodiment, a second cavity 62 is formed between the end of the rotor plate 7 close to the opening 73 and the first friction disc 51; a second cavity 62 is formed between the end of the rotor plate 7 close to the second filter plate 71 and the second friction disc 53; both ends of the rotor plate 7, the end of the first friction disc 51 close to the rotor plate 7, and the end of the second friction disc 53 close to the rotor plate 7 are provided with spoiler strips 56. By providing the spoiler strips 56, it is convenient to disturb the pulp to form a high-speed liquid flow to dissociate the pulp fibers.

[0088] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A production process for multi-layer corrugated paper produced from waste paper raw materials, characterized in that: The multi-layer corrugated paper produced from waste paper raw materials comprises a first surface paper layer and a second surface paper layer; a honeycomb skeleton layer is arranged on the top of the first surface paper layer; the honeycomb skeleton layer is provided with a plurality of honeycomb holes; a filling layer is arranged in the honeycomb holes; the second surface paper layer is arranged on the top of the honeycomb skeleton layer and the top of the filling layer; The honeycomb skeleton layer is made of a first slurry and a stiffening agent; the first surface paper layer and the second surface paper layer are made of a second slurry; the filling layer is made of a third slurry; the beating degrees of the first slurry, the second slurry and the third slurry are successively reduced; The following steps are also included: S1, crushing the waste paper and mixing it with water and a wet strength dissociating agent to obtain a mixture; S2, placing the mixed material into a multi-stage pulping machine, thereby obtaining a first pulp having a beating degree that decreases successively, a second pulp having a beating degree, and a third pulp; S3, adding a stiffening agent to the first slurry to obtain a composite slurry; using the composite slurry as a raw material, pressing and preliminarily dehydrating to form a honeycomb skeleton layer; S4, using the second slurry as a raw material to perform pressing and preliminary dehydration to form a first surface paper layer; and stacking the honeycomb skeleton layer on the first surface paper layer; S5, filling the third slurry into the honeycomb holes, pressing and preliminarily dehydrating to form a composite layer; S6, using the second slurry as a raw material to perform pressing and preliminary dehydration to form a second surface paper layer; and laminating the second surface paper layer on the composite layer; S7, after being heated and completely dehydrated, forming a multi-layer corrugated paper produced from the waste paper raw material; In step S1, the waste paper is crushed and mixed with water and a wet strength dissociator in a weight ratio of 1:4:0.2, and stirred at a rate of 20-50 r / min for 45-60 min to obtain the mixture; In step S2, the mixed material is placed in a multi-stage pulping machine, and 0.15-0.25% of a dispersant and 0.25-0.45% of a softener are added by weight, and stirred at a rate of 120-150 r / min for 45-65 min; thereby obtaining a first slurry, a second slurry, and a third slurry with successively decreasing beating degrees; In step S3, 0.5-1% by weight of a stiffening agent is added to the first slurry, and the mixture is stirred at a rate of 25-60 r / min for 15 min to obtain a composite slurry; The multi-stage pulping machine comprises a tank body; a first conveying and beating unit, a second conveying and beating unit and a third conveying and beating unit are sequentially arranged in the tank body; A feeding cavity is formed between one end of the first conveying and beating unit and the inner wall of the tank body; a first discharging cavity is formed between the other end of the first conveying and beating unit, one end of the second conveying and beating unit and the inner wall of the tank body; a second discharging cavity is formed between the other end of the second conveying and beating unit, one end of the third conveying and beating unit and the inner wall of the tank body; a third feeding cavity is formed between the other end of the third conveying and beating unit and the inner wall of the tank body; The tank body is provided with a feed port communicating with the feed cavity, a first discharge port communicating with the first discharge cavity, a second discharge port communicating with the second discharge cavity, and a third discharge port communicating with the third discharge cavity; The third slurry is discharged from the first discharge port; the second slurry is discharged from the second discharge port; and the first slurry is discharged from the third discharge port.

2. A production process for producing multi-layer corrugated paper produced from waste paper raw materials according to claim 1, characterized in that: The first conveying and beating unit, the second conveying and beating unit and the third conveying and beating unit all include a shell fixed in the tank, a first friction disc arranged at one end of the shell and a second friction disc arranged at the other end of the shell; the second friction disc is provided with a first filter plate; the first filter plate is penetrated with a first filter hole; the radius of the first filter hole of the first conveying and beating unit, the radius of the first filter hole of the second conveying and beating unit and the radius of the first filter hole of the third conveying and beating unit decrease in sequence; A beating cavity is formed between the first friction disc, the housing and the second friction disc; a rotor assembly is provided in the beating cavity for sliding and rotating; A rotating shaft is provided in the slot body for rotation along the length direction; a motor is provided in the slot body; the output end of the motor is connected to the rotating shaft; the rotating shaft passes through the first friction plate and the second friction plate; and the rotor assembly is matched with the rotating shaft profile.

3. A production process for producing multi-layer corrugated paper produced from waste paper raw materials according to claim 2, characterized in that: The first friction disc is provided with a flap which opens toward the beating chamber.

4. A production process for producing multi-layer corrugated paper produced from waste paper raw materials according to claim 1 according to claim 3, characterized in that: The rotor assembly includes a rotor plate; a second filter plate is provided at one end of the rotor plate close to the second friction disk; a second filter hole is penetrated by the second filter plate; an opening is provided at one end of the rotor plate close to the first friction disk, which is arranged opposite to the second filter plate; an adjustment slot is provided between the second filter plate and the opening; a third filter plate is provided in the adjustment slot for lifting and lowering; a third filter hole is penetrated by the third filter plate; the radius of the second filter hole is the same as the radius of the third filter hole; the radius of the second filter hole is greater than the radius of the first filter hole; and an adjustment drive assembly for driving the third filter plate to lift and lower in the adjustment slot is also included.

5. A production process for producing multi-layer corrugated paper produced from waste paper raw materials according to claim 1 according to claim 4, characterized in that: A second cavity is formed between the end of the rotor plate close to the opening and the first friction disk; a second cavity is formed between the end of the rotor plate close to the second filter plate and the second friction disk; both ends of the rotor plate, the end of the first friction disk close to the rotor plate and the end of the second friction disk close to the rotor plate are provided with spoiler strips.

6. The production process for producing multi-layer corrugated paper produced from waste paper raw materials according to claim 1 according to claim 4, characterized in that: The adjustment drive assembly includes a drive ring rotatably disposed on the rotor plate and a slider movably disposed on the rotor plate; The driving ring is provided with an arc-shaped groove; the third filter plate is provided with a limit pin; the limit pin is movably arranged in the arc-shaped groove; The driving ring is provided with an inclined groove; the sliding block is provided with a driving pin; the driving pin is movably arranged in the inclined groove; and the rotor plate is provided with a spring sheet abutting against the driving ring.

7. A process for producing multi-layer corrugated paper produced from waste paper raw materials according to claim 1 according to claim 6, characterized in that: A rotating frame is rotatably provided on the top of the slider; guide pins are provided at both ends of the rotating frame; a torsion spring is provided between the rotating frame and the slider; A first C-shaped groove is provided on the inner wall of one end of the housing close to the first friction disc; a second C-shaped groove is provided on the inner wall of one end of the housing close to the second friction disc; a first sliding groove is provided between one end of the first C-shaped groove and one end of the second C-shaped groove; a second sliding groove is provided between the other end of the first C-shaped groove and the other end of the second C-shaped groove; the first sliding groove and the second sliding groove are arranged alternately; The depth of the first C-shaped groove, the depth of the second C-shaped groove and the depth of the second sliding groove are the same; the depth of the first sliding groove is less than the depth of the second sliding groove; When the guide pin slides between the first C-shaped groove, the second C-shaped groove and the second sliding groove, the spring sheet abuts against the driving ring, so that the limit pin is arranged at the bottom of the arc groove, so that the third filter plate descends in the adjustment groove, thereby aligning the second filter hole with the third filter hole; When the guide pin slides between the first sliding grooves, the slider moves downward, and the driving ring is driven to compress the spring sheet and then rotate under the cooperation of the inclined groove and the driving pin. The third filter plate rises in the adjusting groove through the cooperation of the arc groove and the limit pin, so that the second filter hole and the third filter hole are staggered.

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