CN117888379A

CN117888379A - Efficient waste paper pulping and deslagging system and method thereof

Info

Publication number: CN117888379A
Application number: CN202410016357.2A
Authority: CN
Inventors: 张超; 许鹏田; 肖文华; 赵传宝; 王振生; 张锋; 张震; 徐爱新; 康福涛; 李志鹏
Original assignee: Shandong Depike Paper Co ltd
Current assignee: Shandong Depike Paper Co ltd
Priority date: 2024-01-05
Filing date: 2024-01-05
Publication date: 2024-04-16

Abstract

The invention provides a high-efficiency waste paper pulping and deslagging system and a method thereof, and relates to the technical field of waste paper pulping and papermaking.A deslagging method provided by the invention is characterized in that waste paper primary pulp is discharged to a secondary fluffing system through a continuous deslagging system, heavy slag is treated in the secondary fluffing system so as to efficiently separate the heavy slag, and the pulp is subjected to screening treatment by the continuous deslagging system for the second time, the separated heavy slag is directly discharged, the treatment pressure of a rear-end working procedure is not increased, the energy consumption of the system is low, and meanwhile, the defiberized pulp is fed into the continuous deslagging system, so that the concentration of the primary pulp is diluted, the centrifugal separation effect is improved, and the screening effect and the screening precision are improved; according to the deslagging system provided by the invention, the fluffing separation device is arranged, so that heavy slag separated by the continuous deslagging device can be fluffed, wet-strength paper sheets are fluffed at the front end efficiently, the heavy slag is directly discharged, the process of introducing the heavy slag into the rear end is avoided, and the treatment burden is avoided, so that the energy consumption is reduced better.

Description

Efficient waste paper pulping and deslagging system and method thereof

Technical Field

The application relates to the technical field of waste paper pulping and papermaking, in particular to a high-efficiency waste paper pulping and deslagging system and a method thereof.

Background

Paper making has a long history in China, is one of the four ancient inventions in China, is an important carrier for cultural transmission and history inheritance, and is rapidly developed after entering modern times. The raw materials used in the modern paper industry are mainly wood pulp, the wood pulp is mainly derived from forest vegetation, the rapidly developed paper industry causes serious damage to the vegetation, and in order to recycle waste paper, the environment-friendly paper making technology is widely developed and applied.

In the existing waste paper pulping and papermaking process, the conventional process is continuous disintegration firstly, and specifically comprises the following steps:

(1) the chain board machine continuously supplies waste paper raw materials into the pulper, and the recycled waste paper raw materials usually contain a large amount of impurities and household garbage, such as plastic belts, ropes, iron wires, stones, cement blocks adhered on cartons, plastic films, glue, nails and the like;

(2) removing long plastic, ropes and the like in the pulper through a rope twisting device, pulling out the pulper by a rope twisting extraction device after the ropes are wound to a certain diameter, cutting by using a cutter, and intensively discharging;

(3) removing large heavy slag generated by pulping by a slag sedimentation device, and intensively discharging;

(4) the hydraulic cleaner is used for removing relatively broken pieces which cannot be wound by the twisted ropes and cannot pass through the fragments and the like of the screen plate of the hydraulic pulper, the hydraulic cleaner is used for removing the broken pieces and the like, the broken pieces are sent to the cylinder screen for cleaning after elutriation, the fibers in the light residues such as broken plastics and the like are screened, and the light broken plastics and the like are discharged in a concentrated mode. Relatively large heavy impurities are discharged from the bottom of the hydro-cleaner.

Through the use of the auxiliary facilities, the continuous pulping of the pulper is realized, the good pulp passes through a sieve plate device at the bottom of the pulper, pulp is pumped to the next process by a pulp lifting pump, a large amount of heavy/light impurities which can pass through the sieve plate are still contained in the primary good pulp formed in the process, because waste paper raw materials are continuously fed in through continuous disintegration, some paper sheets which are not well disintegrated are directly pumped into a sieve hole to enter a streaming link, a high-concentration slag remover is usually arranged behind the pulp pump so as to utilize the difference in the gravity of impurities in the pulp flow, the heavy impurities are discharged from the bottom of the slag remover through the vortex centrifugal effect of the high-concentration slag remover, other parts of the pulp contain light impurities, the paper sheets which are not disintegrated flow out from the top of the slag remover to continue streaming, so that the heavy slag is discharged in the initial stage, the light and heavy impurities are required to be separated again in the subsequent process.

In order to ensure the working efficiency of the pulper, the conventional deslagging mode generally uses relatively high concentration (generally 4-5%), and the separation effect of the vortex type separator is poor in a high concentration state. The method has the advantages that a large amount of heavy slag and a large amount of wet-strength paper sheets, plastic sheets containing fibers, paper sheets carrying heavy slag and the like carried in the slurry are conveyed to the next stage for secondary treatment, multiple lifting and classified screening are needed, energy is wasted, and large impurities or pollutants are easily crushed in the treatment process to become smaller impurities. Because the slag cannot be discharged as early as possible in the pulping process, the difficulty of subsequent treatment is increased, the pulping efficiency is low, and meanwhile, because places for collecting impurity slag are required to be arranged at a plurality of positions, the clean production is not facilitated

In view of the above, the present application aims to provide a high-efficiency scrap paper pulping and deslagging system and a method thereof, so as to better solve the above technical problems.

Disclosure of Invention

An object of the embodiment of the application is to provide a high-efficiency waste paper pulping and deslagging system and a method thereof, which can solve the problems of high-efficiency disintegration and separation of pulp residues in early stage, effective treatment of heavy residues, concentrated deslagging and the avoidance of additional treatment of heavy residues and the disintegration of wet strength paper sheets.

The application provides a high-efficiency waste paper pulping and deslagging method, which comprises the following steps:

s1, adopting a water conservancy pulper to carry out continuous disintegration to prepare waste paper primary pulp;

s2, delivering the waste paper primary pulp into a continuous slag discharging system for vortex centrifugal separation, discharging the separated good pulp from the top end of the continuous slag discharging system, delivering the separated good pulp into a rear-end good pulp treatment system, and discharging the separated heavy slag from the bottom;

s3, diluting heavy slag discharged from the bottom of the continuous slag discharging system by white water, conveying the diluted heavy slag into a secondary slag discharging system for treatment, discharging light slag separated in the treatment process from the top end of the secondary slag discharging system, cleaning a cylindrical screen conveyed into a water conservancy pulper, discharging the cleaned heavy slag, discharging the heavy slag separated in the treatment process from the bottom edge of the secondary slag discharging system into a heavy slag collecting tank along the tangential direction, automatically discharging the heavy slag, pumping slurry formed by the slag discharging separation to the continuous slag discharging system in the step S2 through a slurry pump of the pulper, and repeatedly carrying out slag discharging screening treatment.

In step S3, the light slag discharged from the top of the secondary fluffing system is automatically discharged by using slurry pressure, and the light slag is intensively discharged in the form of light slag after the cylindrical screen sent into the water conservancy pulper is cleaned.

Further, in step S3, the secondary fluffing system fluffs the slurry formed by separation, filters the slurry by using a sieve plate, pumps the slurry by using a water conservancy pulper, and enters the continuous slag discharging system in step S2 again to perform repeated screening, thereby improving the screening effect.

Further, in step S2, the high-concentration slag removal system is provided with 2-4 conical vortex slag removal devices, and a white water dilution device is provided on a slag collecting main pipe at the bottom of the conical vortex slag removal devices.

Based on the same conception, the application also provides a high-efficiency waste paper pulping and deslagging system, which comprises a pulping device, a continuous deslagging device and a fluffing separation device, wherein the pulping device is provided with a cylindrical screen, the continuous deslagging device is respectively connected with the pulping device and the fluffing separation device, the fluffing separation device is connected with the cylindrical screen, during pulping, waste paper primary pulp is continuously disintegrated through the pulping device and is prepared, the primary pulp is conveyed to the continuous deslagging device, heavy slag and good liquid are separated by the continuous deslagging device, the separated heavy slag enters the fluffing separation device after being diluted by white water, light slag, slurry and heavy slag are separated by the fluffing separation device, the light slag is conveyed to the outside after being treated by the cylindrical screen, the slurry is conveyed to the continuous deslagging device for continuous treatment, and the heavy slag is directly discharged from the bottom end of the fluffing separation device.

Further, the crushing pulping device is also provided with a D-type hydraulic pulping structure and a hydraulic cleaner; the continuous slag discharging device is provided with 2-4 conical vortex slag removing mechanisms, and a slag collecting main pipe at the bottom of the conical vortex slag removing mechanisms is provided with a white water diluting device.

Further, the crushing pulping device is provided with a pulp pipeline and a pulp pump.

Further, the fluffing and separating device is provided with a tank body, a fluffing structure, a sieve plate structure, a pulp storage structure and a slag discharging structure, wherein the fluffing structure is arranged in the tank body and is used for actively fluffing wet-strength pulp with heavy slag, the pulp storage structure and the sieve plate structure are arranged at the position, close to the bottom end, in the tank body, a pulp inlet and a slag discharging port are arranged on the side face of the tank body, a light slag discharging port is arranged at the top end of the tank body, a good pulp outlet is arranged at the bottom end of the tank body, the pulp inlet is connected with the slag discharging port of the continuous slag discharging device, the good pulp outlet is connected with the inlet of the pulp pump, and the light slag discharging port is connected with the cylinder screen.

Further, the untwining structure comprises a mounting seat, a cutter disc, a untwining cutter and a driving part, wherein the mounting seat penetrates through the center of the sieve plate structure and is fixed to the top end of the driving part, the cutter disc is arranged on the mounting seat, the untwining cutter is arranged on the cutter disc, and the driving part is arranged at the bottom end of the tank body and is in driving connection with the cutter disc.

Further, the slurry inlet and the slag discharging port are distributed on the opposite side of the tank body; the installation height of the cutterhead is higher than the height of the slag discharging port.

The invention has the beneficial effects that:

1. according to the efficient waste paper pulping and deslagging method provided by the invention, after the waste paper primary pulp is discharged from the light slag through the continuous slag discharging system, the heavy slag in the waste paper primary pulp is processed in the secondary fluffing system, and wet-strength paper sheets which are not disintegrated and heavy slag groups adhered by films and paper sheets are efficiently fluffed and separated, so that the pulp secondarily enters the continuous slag discharging system for screening treatment, and the heavy slag separated by the secondary fluffing system is directly discharged and can not be brought into the processing system any more, so that the processing pressure of a rear-end working procedure is not increased, the system energy consumption is low, and the pulp formed by the processing of the secondary fluffing system is conveyed through a pulp pump of a pulper without additionally adding a power source; meanwhile, slurry formed by the treatment of the secondary fluffing system is sent into the continuous slag discharging system, on one hand, white water is added in the secondary fluffing process, so that the concentration of the slurry is reduced, the concentration of high-concentration primary slurry (with the concentration of 4-5%) discharged by a pulper in the main flow is diluted by the addition of low-concentration slurry flow (with the concentration of 3-4%), the centrifugal separation effect of the continuous slag discharging system can be improved by dilution, on the other hand, the screening effect and the accuracy of the treatment system can be improved by repeated slag discharging treatment, the energy consumption is effectively reduced, the method provided by the application realizes concentrated discharge of light and heavy slag, reduces environmental pollution and subsequent treatment, is beneficial to the realization of clean production, and is green and environment-friendly;

2. the invention provides a high-efficiency waste paper pulping and deslagging system, which comprises a disintegrating pulping device, a continuous deslagging device and a defibering separation device, wherein the disintegrating pulping device is provided with a cylindrical screen, the continuous deslagging device is respectively connected with the disintegrating pulping device and the defibering separation device, the defibering separation device is connected with the cylindrical screen, during pulping treatment, waste paper primary pulp is continuously disintegrated through the disintegrating pulping device, and is conveyed to the continuous deslagging device, heavy slag and good liquid are separated by the continuous deslagging device, the separated heavy slag is diluted by white water and enters the defibering separation device, light slag, slurry and heavy slag are separated by the defibering separation device, the light slag is discharged outside after being treated by the cylindrical screen, the slurry is continuously treated by the continuous deslagging device, and the heavy slag is directly discharged from the bottom end of the defibering separation device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a system for pulping and deslagging in some embodiments of the invention;

FIG. 2 is a schematic diagram of a fluffing and separating device according to some embodiments of the invention;

FIG. 3 is a schematic diagram of a fluffing and separating device according to some embodiments of the invention;

fig. 4 is a schematic cross-sectional view of fig. 3 A-A.

The reference numerals are respectively:

the pulping device 1, the cylinder screen 11, the D-shaped hydraulic pulping structure 12, the hydraulic cleaner 13, the continuous deslagging device 2, the conical vortex deslagging mechanism 21, the defibering separation device 3, the tank 31, the slurry inlet 311, the deslagging port 312, the light slag discharge port 313, the good slurry outlet 314, the defibering structure 32, the mounting seat 321, the cutter head 322, the defibering knife 323, the driving part 324, the sieve plate structure 33, the slurry storage structure 34, the deslagging structure 35, the slurry pipeline 4 and the pulp pump 5.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1-4, this embodiment provides a high-efficiency pulp-breaking and deslagging system for waste paper, which comprises a disintegrating and pulping device 1, a continuous deslagging device 2 and a disintegrating and separating device 3, wherein the disintegrating and pulping device 1 is provided with a cylindrical screen 11, the continuous deslagging device 2 is respectively connected with the disintegrating and pulping device 1 and the disintegrating and separating device 3, the disintegrating and separating device 3 is connected with the cylindrical screen 11, during pulp breaking treatment, the disintegrating and pulping device 1 is used for continuously disintegrating and preparing waste paper primary pulp, the primary pulp is conveyed to the continuous deslagging device 2, heavy slag and good liquid are separated from the continuous deslagging device 2, the separated heavy slag enters the disintegrating and separating device 3 after being diluted, light slag, slurry and heavy slag are separated from the disintegrating and separating device 3, the light slag is conveyed to the cylindrical screen 11 and discharged, the slurry is conveyed to the continuous deslagging device 2 for treatment, and the heavy slag is discharged from the bottom end of the disintegrating and separating device 3.

According to the embodiment, the fluffing separation device 3 is arranged, so that heavy slag separated by the continuous slag discharge device 2 can be fluffed, the heavy slag is directly discharged, the treatment burden is avoided being caused by introducing the heavy slag into a rear-end process, so that the energy consumption is reduced better, meanwhile, slurry formed by the fluffing separation device 3 is fed into the continuous slag discharge device 2, on one hand, the concentration of high-concentration primary slurry (4-5% of concentration) discharged by a pulper in a main process is diluted by adding low-concentration slurry flow (2-3%), and on the other hand, the centrifugal separation effect of the continuous slag discharge device 2 can be improved by diluting, on the other hand, the screening effect and the accuracy of the treatment system can be improved by repeatedly carrying out slag discharge treatment, the subsequent treatment difficulty is reduced or avoided, and the energy consumption of the system is effectively reduced.

Specifically, in this embodiment, during treatment, the slurry enters the slurry inlet at the upper part of the slag extractor along the tangential direction at a higher flow rate, and the top of the slag extractor is provided with a conical flow guide body, so that the slurry flows in a stable vortex manner in the slag extractor, impurities in the slurry flow are separated from the fiber slurry flow under the action of centrifugal force, and heavy impurities such as gravel, glass and metal are thrown to the cylinder wall and pushed by the slurry inlet pressure to perform downward spiral movement, and are discharged downwards through the bottom of the cone. The slurry of a large amount of light fibers rotates along the center and is discharged from the flow guide pipe at the top of the slag remover.

Specifically, the disintegrating pulping device 1 in this embodiment is further provided with a D-type hydraulic pulping structure 12 and a hydraulic cleaning mechanism 13;

the continuous slag discharging device 2 is provided with 2-4 conical vortex slag removing mechanisms 21, and a slag collecting main pipe at the bottom of each conical vortex slag removing mechanism 21 is provided with a white water diluting device so as to dilute heavy slag and send the diluted heavy slag into the fluffing separating device 3 for secondary fluffing separation of the heavy slag.

The structure of each processing device is specifically shown in the embodiment, and the original equipment of the existing D-type pulping system is utilized, so that the energy consumption is not increased, and the processing effect is good.

Specifically, in this embodiment, the disintegrating pulping device 1 is provided with a pulp pipeline 4, and a pulp pump 5 is disposed on the pulp pipeline 4, where the pulp separated by the disintegrating separating device 3 is connected with an inlet of the pulp pump 5, so that the pulp is fed to the continuous slag discharging device 2 through the pulp pump 5, and no additional pulp pump is required, so as to reduce energy consumption, and meanwhile, the structure is simple, and the layout is convenient.

In some embodiments, the fluffing separation device 3 is provided with a tank 31, a fluffing structure 32, a sieve plate structure 33, a pulp storage structure 34 and a slag discharging structure 35, the fluffing structure 32 is installed in the tank 31 and is used for actively fluffing wet-strength pulp with heavy slag, the pulp storage structure 34 and the sieve plate structure 33 are arranged at positions, close to the bottom, in the tank 31, the side surface of the tank 31 is provided with a pulp inlet 311 and a slag discharging port 312, the top end of the tank 31 is provided with a light slag discharging port 313, the bottom end of the tank 31 is provided with a good pulp outlet 314, the pulp inlet 311 is connected with the slag discharging port of the continuous slag discharging device 2, the good pulp outlet 314 is connected with the liquid inlet of the continuous slag discharging device 2, and the light slag discharging port 313 is connected with the cylinder screen 11.

Specifically, the untwining structure 32 includes a mounting seat 321, a cutter disc 322, a untwining cutter 323 and a driving portion 324, the mounting seat 321 passes through the center of the screen plate structure 33 and is connected with the top end of the driving portion 324, the cutter disc 322 is rotatably disposed on the mounting seat 321, the untwining cutter 323 is mounted on the cutter disc 322, and the driving portion 324 is mounted on the bottom end of the tank 31 and is in driving connection with the cutter disc 322 through a driving shaft.

Specifically, the slurry inlet 311 and the slag discharge port 312 are distributed on opposite sides of the tank 31; the installation height of the cutterhead 322 is higher than the height of the slag discharging opening 312.

The structure of the fluffing and separating device 3 is specifically shown in this embodiment, which is equivalent to a vertical sealed hydraulic pulp crushing mechanism, after being treated by the continuous slag discharging device 2, a large amount of heavy pulp flows of wet-strength paper sheets and fiber-containing plastic sheets formed by entrainment enter the tank body 31 from the pulp inlet 311 along a tangent line, as the bottom of the tank body 31 is designed with the sieve plate structure 33, and is provided with the fluffing structure 32, the fluffing structure 32 drives, and the disturbance of the pulp flows is strengthened in the same direction, on the one hand, the discharge of the last-stage slag separator is facilitated, on the other hand, the disturbance can be strengthened, the well-formed pulp of the fluffed fibers, the pulp sheets and the like is filtered by the sieve plate structure 33, and then is connected in parallel to the continuous slag discharging device 2 for circulation treatment, while the light slag is discharged from the top, and is discharged in a concentrated form of light slag after being cleaned by the cylinder screen 11 of the hydraulic pulp crushing machine, and the slag discharging port 312 is specifically arranged along the tangent line of the side of the tank body 31, so that the heavy slag is discharged, and the pneumatic slag discharging valve can be realized.

Specifically, in this embodiment, the driving portion 324 adopts a pulley driving structure to drive the cutterhead 322 to rotate, so as to perform fluffing and separating of heavy slag, which has a simple structure and good fluffing effect, and can make slurry slag separate at an early stage with high efficiency, reduce the burden of a post-stage treatment procedure, thereby reducing energy consumption better and improving treatment effect.

In some embodiments, the cutterhead 322 is mounted at a height that is higher than the height of the slag outlet 312. By the arrangement, the crushing effect of the cutterhead 322 on heavy slag is reduced, secondary pollution is avoided, and meanwhile, the fluffing and crushing functions of slurry flow can be realized through the cutterhead 322 so as to better separate out the heavy slag and avoid bringing the heavy slag into a post-treatment process.

As described with reference to fig. 1, the present embodiment provides a method for efficiently pulping and deslagging waste paper by using the above system, which includes the following steps:

Specifically, in step S3, the light slag discharged from the top end of the secondary fluffing system is automatically discharged by using slurry pressure, and the light slag is intensively discharged in the form of light slag after the cylindrical screen sent into the water conservancy pulper is cleaned.

Specifically, in step S3, the secondary fluffing system fluffs the slurry formed by separation, filters the slurry by using a sieve plate, pumps the slurry by using a water conservancy pulper, and enters the continuous slag discharging system in step S2 again to perform repeated screening, thereby improving the screening effect.

Specifically, in step S2, the continuous slag discharging system is provided with 2-4 conical vortex slag discharging devices.

The efficient waste paper pulping and deslagging method provided by the embodiment can effectively solve the problem of difficult early separation of pulp, enables pulp and slag to be efficiently separated in early stage through treatment of a secondary fluffing system, fully utilizes the existing equipment to carry out secondary treatment of pulp and slag, realizes effective treatment of heavy slag, concentrates slag discharge, avoids additional treatment, effectively simplifies treatment procedures and reduces energy consumption.

In this embodiment, 2-4 conical vortex deslagging devices can be set based on specific process flow requirements, continuous deslagging treatment is performed, heavy slag formed by the continuous deslagging treatment enters a vertical secondary fluffing system with special settings along a tangential line, secondary fluffing is performed, deslagging is performed, acceptable good pulp of systems such as fibers and pulp sheets after fluffing by the secondary fluffing system is pumped into the continuous deslagging system by a pulp pump of a pulper for circulation treatment, high-efficiency removal of heavy impurities is realized, and a light slag discharge port is arranged at the top of the secondary fluffing system, so that light slag enters a cylindrical screen for treatment and concentrated deslagging is performed.

The treatment method provided by the embodiment creatively realizes the high-efficiency separation of heavy slag and wet-strength paper sheets which are not broken in the primary pulp and heavy slag groups which are adhered by films and paper sheets, meanwhile, the slag pulp formed after the secondary untangling system in the embodiment is untangling is circularly treated, the good pulp is secondarily fed into the continuous slag discharging system for screening, the untreated heavy slag can be fed into the system untangling treatment again, thereby ensuring the treatment effect, reducing the energy consumption of the system, only one secondary untangling system needs low-power driving, and the light slag is treated by the continuous slag discharging system, so that the power is lower; furthermore, the heavy slag of the conventional multistage slag discharging system is not provided with a special loosening mechanism, so that wet-strength paper sheets and paper sheets adhered on the heavy slag cannot be loosened only by hydraulic force, waste is caused along with the discharge of the heavy slag, and the recovery efficiency is reduced. The light slag also usually has paper sheets and the like, even needs to return to a pulper, is repeatedly crushed, has low efficiency, can be directly discharged, and the good pulp formed by processing of the conventional multistage slag discharging system needs to be discharged into a separate pulp pipeline or a main pulp pipeline by a separate pump, so that the energy consumption is higher, but the embodiment does not need, and the embodiment realizes centralized discharge of light slag and heavy slag by improving the traditional continuous D-type pulping system, reduces environmental pollution and subsequent treatment, and is beneficial to the realization of clean production.

In this embodiment, a flight conveyor is specifically used to convey used paper to a pulper for continuous disintegration.

Here, the white water described in the present application is recycled production water during the production process.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A high-efficiency pulping and deslagging method for waste paper is characterized in that: the method comprises the following steps:

s1, adopting a hydropulper to carry out continuous disintegration to prepare waste paper primary pulp;

2. The efficient pulp and slag removal method for paper wastes according to claim 1, wherein: in the step S3, the light slag discharged from the top end of the secondary fluffing system is automatically discharged by using the slurry pressure, and is sent into a cylinder screen of a water conservancy pulper to be intensively discharged in a light slag mode after being cleaned.

3. The efficient pulp and slag removal method for paper wastes according to claim 2, wherein: in the step S3, the secondary fluffing system fluffs and separates the formed good pulp, the good pulp is filtered by a screen plate, and is pumped away by a pulp pump of a hydropulper, and the good pulp enters the continuous slag discharging system in the step S2 again for repeated screening, so that the screening effect is improved.

4. The efficient pulp and slag removal method for paper wastes according to claim 1, wherein: in the step S2, the high-concentration deslagging system is provided with 2-4 conical vortex deslagging devices, and a slag collecting main pipe at the bottom of the conical vortex deslagging devices is provided with a white water diluting device.

5. A high-efficient waste paper pulping deslagging system is characterized in that: the device comprises a disintegrating pulping device, a continuous deslagging device and a disintegrating separating device, wherein the disintegrating pulping device is provided with a cylindrical screen, the continuous deslagging device is respectively connected with the disintegrating pulping device and the disintegrating separating device, the disintegrating separating device is connected with the cylindrical screen, during pulping, the disintegrating pulping device is used for continuously disintegrating to prepare waste paper primary pulp, the primary pulp is conveyed to the continuous deslagging device, heavy slag and good pulp are separated by the continuous deslagging device, the separated heavy slag is diluted by white water and enters the disintegrating separating device, light slag, slurry and heavy slag are separated by the disintegrating separating device, the light slag is conveyed to the outside of the cylindrical screen after being processed, the slurry is conveyed to the continuous deslagging device for continuous processing, and the heavy slag is directly discharged from the bottom end of the disintegrating separating device.

6. The efficient pulp and slag removal system for paper waste as defined in claim 5, wherein: the crushing pulping device is also provided with a hydraulic pulping structure and a hydraulic cleaner; the continuous slag discharging device is provided with 2-4 conical vortex slag removing mechanisms, and a slag collecting main pipe at the bottom of the conical vortex slag removing mechanisms is provided with a white water diluting device.

7. The efficient pulp and slag removal system for paper waste as defined in claim 5, wherein: the crushing pulping device is provided with a pulp pipeline and a pulp pump.

8. The efficient pulp and slag removal system for paper waste as defined in claim 7, wherein: the utility model provides a pulp separation device, including the pulp storage device, the pulp storage device is equipped with jar body, fluffs structure, sieve structure, stores up thick liquid structure and sediment structure, fluffy structure install in the jar is internal for initiatively fluffy the wet strength paper pulp of carrying heavy sediment, store up thick liquid structure and sieve structure set up in the position that is close to the bottom in the jar, the side of the jar body is equipped with thick liquid import and arranges the sediment mouth, the top of the jar body is equipped with light sediment discharge port, the bottom of the jar body is equipped with good thick liquid export, the thick liquid import with arrange sediment mouth connection of sediment device in succession, good thick liquid export with the inlet connection of pulp pump, light sediment discharge port with cylinder sieve access connection.

9. The efficient scrap paper pulping and deslagging system of claim 8, wherein: the fluffing structure comprises a mounting seat, a cutter disc, fluffing cutters and a driving part, wherein the mounting seat penetrates through the center of the sieve plate structure and is fixed at the top end of the driving part, the cutter disc is arranged on the mounting seat, the fluffing cutters are arranged on the cutter disc, and the driving part is arranged at the bottom end of the tank body and is in driving connection with the cutter disc.

10. The efficient scrap paper pulping and deslagging system of claim 9, wherein: the slurry inlet and the slag discharging port are distributed on the opposite side of the tank body; the installation height of the cutterhead is higher than the height of the slag discharging port.