Broken paper shredder and broken paper shredding process containing wet strength agent

Abstract

A broken paper shredder comprises a shredding tank body, a turbine rotor, a tank body upper cover, a mixed heating system, a shredded paper blowing system and a wind diversion system, as well as a concentration control system. A broken paper feeding port is provided on the shredding tank body, the turbine rotor is arranged at the bottom of the shredding tank body, and a guide pipe is connected to the bottom end. A metal filter is partially arranged on the tank body upper cover. The mixed heating system comprises a white water pipe, a steam-water mixing heater and a steam pipe. The shredded paper blowing system comprises a paper suction duct, a diversion duct and a shredded paper fan, as well as a spray pipe. The wind diversion system comprises a broken paper filter chamber and an exhaust duct. The broken paper shredder has a complete structure and performance, and can realize the simultaneous operation of a "large broken paper" feeding system and a "scattered broken paper" blowing system, thereby improving the broken paper recycling rate and processing efficiency, and improving the papermaking production environment. The shredder can be used to timely and quickly shred broken paper containing a wet strength agent, improve resource utilization, and meet the ecological and environmental protection requirements in the field of modern papermaking production.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking, and in particular to a broken paper shredder and a broken paper shredding process method containing a wet strength agent. Background Art

[0002] During the papermaking, rewinding and paper cutting processes, papermaking enterprises inevitably generate a large amount of scrapped broken paper. In order to recycle these scrapped broken papers and reduce resource waste, a broken paper shredding device is usually installed on the papermaking production line in current production. After the broken paper is shredded, it is pumped into the pulp pool for reuse. This has become an important link in the papermaking production process. The currently used broken paper shredding device is mainly a stirring tank structure with a stirring plate. The scrapped broken paper is manually put into the stirring tank filled with white water and shredded and pulped by mechanical stirring. However, the scrapped broken paper in production includes not only the waste, returned and scrapped paper that are easy to collect manually, but also the "large broken paper" with a large number and size, which is difficult to collect manually. The "scattered broken paper" in the form of scraps, pieces and strips generated during the process, therefore, it is difficult to collect all the broken paper in depth, and the shredding and recycling ratio is not high. The existing broken paper shredding device cannot meet the ecological and environmental protection requirements of efficient utilization of paper production resources; at the same time, in order to improve the shredding capacity, shorten the shredding time, and improve the shredding efficiency, some broken paper shredding devices also need to be equipped with a hot water tank for heat storage and heat exchange. The white water is heated in the hot water tank and then filled into the stirring tank. However, this heating method not only adds additional facilities and occupies the production site, but also increases the process operation procedures and the workload of manual washing. Therefore, it is necessary to improve and perfect the broken paper shredding device in the existing technology to meet the requirements of high efficiency, environmental protection and ecology in the field of modern paper production. Summary of the invention

[0003] The object of the present invention is to provide a broken paper shredder and a process for shredding broken paper containing a wet strength agent using the broken paper shredder.

[0004] A broken paper shredder, comprising: a shredding tank, a turbine rotor, a tank cover, a mixed heating system, a shredded paper blowing system and a wind diversion system. Among them: the shredding tank is provided with an openable and closable broken paper inlet, the turbine rotor is arranged at the bottom of the shredding tank, driven to rotate by a driving wheel, and the bottom is connected to a drainage pipe, by which the broken paper slurry can be drained to the next process, the tank cover is buckled on the upper end of the shredding tank, and a metal filter is partially provided; the mixed heating system comprises: a white water pipe, a steam-water mixing heater and a steam pipe, the inlet end of the steam-water mixing heater is respectively connected to the white water pipe and the steam pipe, and the outlet end is connected to the shredding tank through a hot water pipe; the shredded paper blowing system comprises: a paper suction duct, a drainage duct and a shredding fan, the shredding fan is arranged at a remote position and connected to the One end of the paper suction air duct is connected, and the other end of the paper suction air duct extends into the ventilation duct and is communicated with the shredding tank body. Preferably, the extended end of the ventilation duct is arranged at the middle height position of the broken paper delivery port, and the end is an inclined surface facing away from the broken paper delivery port. Under the premise of ensuring the "large broken paper" delivery operation, the tendency of the "scattered broken paper" introduced by the ventilation duct into the shredding tank body, especially toward the broken paper delivery port, is minimized; the wind diversion system comprises: a broken paper filter chamber and an exhaust duct. The broken paper filter chamber as a whole covers the setting area of ​​the metal filter screen on the upper cover of the tank body, and is connected and drained by the exhaust duct to reduce or relieve the wind force and pressure in the shredding tank body.

[0005] The broken paper shredder is provided with the broken paper delivery hole for simultaneously delivering "large broken paper" and the shredded paper blowing system for delivering "scattered broken paper". In order to prevent the "scattered broken paper" from scattering and adhering to the inner wall of the shredding tank or scattering and flying out from the broken paper delivery hole, it is preferred that the shredded paper blowing system also includes a spray pipe, one end of which is connected to a white water pipe, and the other end is connected to an end portion installed at the connecting end of the paper suction duct and the air discharge duct, and extends into the paper suction duct, the end portion having a flat nozzle, which disperses and atomizes the white water recovered by the paper machine, wets the "scattered broken paper", accelerates the sedimentation, and prevents the "scattered broken paper" from scattering in the shredding tank; it is further preferred that the spray pipe is linked to the shredding fan arranged at the far end to open or close.

[0006] The broken paper shredder is preferably further provided with a return pipe, one end of which is connected to the upper space of the shredding tank body, and the other end of which is connected to the drainage pipe. The return pipe, the drainage pipe and a concentration sensor arranged on the drainage pipe constitute a concentration control system. When the concentration sensor detects that the broken paper slurry discharged by the drainage pipe does not reach a preset standard value, the concentration sensor controls the drainage of the broken paper slurry into the return pipe and returns to the shredding tank body. When it is detected that the broken paper slurry discharged by the drainage pipe reaches a preset standard value, the concentration sensor controls the drainage of the broken paper slurry to the matching broken paper slurry recovery system to enter the next processing step.

[0007] The broken paper shredder is further preferably provided with a pressure sensor and a temperature sensor. The pressure sensor is arranged at the bottom of the shredding tank body. The control program triggers the control of the liquid level position of the broken paper slurry in the shredding tank body through the sensed pressure signal, and controls the preset upper limit liquid level in the shredding tank body by controlling the closing of the white water pipeline and the steam pipeline. The temperature sensor is arranged in the broken paper slurry. The control program triggers the control of the temperature of the broken paper slurry through the sensed temperature signal, and controls the temperature of the white water initially introduced into the shredding tank body by controlling and adjusting the opening of the steam pipeline.

[0008] A process for shredding broken paper containing a wet strength agent, using the broken paper shredder, comprising the following steps:

[0009] Step 1. Open the first automatic switch valve and the second automatic switch valve respectively arranged on the white water pipeline and the steam pipeline, and simultaneously introduce white water and high-temperature steam into the steam-water mixing heater, quickly heat the white water to 60-80° C., and immediately introduce it into the crushing tank body, until the amount of white water introduced reaches 70-80% of the calibrated water level of the crushing tank body, and close the first automatic switch valve and the second automatic switch valve;

[0010] Step 2. Add a wet strength dissociating agent to the white water injected into the crushing tank in step 1 at a ratio of 10 to 20 kg per ton of broken paper, and start the turbine rotor to rotate and stir evenly;

[0011] Step 3. Put the “large broken paper” containing the wet strength agent in an amount corresponding to the white water injected in step 1 into the shredding tank from the broken paper feeding port, control the turbine rotor to rotate at high speed and vigorously stir for 20 to 30 minutes, then reduce the speed to low and continue stirring and heat preservation and aging for 20 to 30 minutes; synchronized with the heat preservation and aging process, keep the flange ball valve open, start the discharge pump, control the fourth automatic switch valve to open, guide the broken paper pulp in the shredding tank into the drainage pipe, and the concentration sensor starts to detect the concentration and control the concentration of the broken paper pulp;

[0012] When the concentration sensor detects that the concentration value of the broken paper pulp is not within the preset control standard range, the concentration sensor controls the fifth automatic switch valve to open, so that the broken paper pulp returns to the shredding tank through the reflux pipe; at the same time, if the concentration of the broken paper pulp is lower than the lower limit of the preset control standard range, the "large broken paper" is continuously added from the broken paper feeding port into the shredding tank to increase the concentration of the broken paper pulp; and if the concentration of the broken paper pulp is higher than the upper limit of the preset control standard range, the concentration sensor controls the seventh automatic switch valve to open, and white water is introduced into the discharge pump, and the white water is replenished and injected into the shredding tank through the drainage pipe and the reflux pipe to dilute the concentration of the broken paper pulp;

[0013] When the concentration sensor detects that the concentration value of the broken paper pulp is within the preset control standard range and reaches the maturation time, the sixth automatic switch valve is opened to allow the broken paper pulp to be directly discharged to the matching broken paper pulp recovery system through the drainage pipe to enter the next processing step.

[0014] Step 4. When the crushing tank is emptied, the discharge pump is turned off, the rotation of the turbine rotor is stopped, and the process returns to step 1, and the process repeats the process over and over again.

[0015] In the process for disintegrating broken paper containing a wet strength agent, the wet strength dissociating agent added in step 2 is preferably one of peroxide, persulfide or alkaline oxide, and the peroxide, persulfide or alkaline oxide can completely release the nitrogen-carbon bonds after cross-linking of wet strength agents such as PEA, PE and amine-epichlorohydrin resin at a certain temperature.

[0016] The method for shredding broken paper containing a wet strength agent is further preferably capable of starting and continuously operating a shredding blowing system at any time during the entire process of executing step 1 to step 4, that is, starting a shredding blower disposed at a remote end to drive the absorption plate to start collecting "scattered broken paper" on the production line, and at the same time, linkage control starts the third automatic switch valve, and white water is introduced into the spray pipe to introduce the "scattered broken paper" into the paper suction duct, and then the "scattered broken paper" is sprayed with the white water and decelerated through the air vent duct before being put into the shredding tank.

[0017] The beneficial effects of the present invention are as follows: a broken paper shredder with a complete set of structural performance is provided, which adopts a steam-water mixed heating method, can save heating time, improve heating efficiency, and is provided with a shredded paper blowing system with a spray device, which can realize the simultaneous operation of a "large broken paper" delivery system and a "scattered broken paper" blowing system, thereby improving the broken paper recovery rate and broken paper processing efficiency, and improving the papermaking production environment; a wind diversion system is provided, which can avoid the phenomenon that the introduced "scattered broken paper" floats outward from the broken paper delivery port, further improves the equipment operation efficiency and broken paper processing efficiency, and protects the papermaking production environment; the broken paper shredder is used to shred broken paper containing a wet strength agent, and the advantages of the comprehensive structural performance are utilized, supplemented by the application of a wet strength dissociating agent, so as to solve the problems of long shredding time and low utilization rate of the back-copying of broken paper containing a wet strength agent in the prior art, timely and quickly shred broken paper containing a wet strength agent, improve resource utilization, and meet the requirements of high efficiency, environmental protection, and ecology in the field of modern papermaking production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the front view of the damaged paper shredder.

[0019] Figure 2 for Figure 1 Sectional view of section AA.

[0020] Figure 3 for Figure 1 Cross-sectional view of the middle BB section.

[0021] Figure 4 for Figure 1 A partial enlarged cross-sectional view of point Ⅰ in the middle.

[0022] Figure 5 This is a top view of the broken paper shredder.

[0023] Figure 6 This is the working principle diagram of the damaged paper shredder. DETAILED DESCRIPTION

[0024] The technical solution claimed for protection of the present invention is further described below in conjunction with specific embodiments and the accompanying drawings. Example 1

[0025] A paper shredder with a processing capacity of 600 kg, such as Figures 1 to 4 As shown, it includes: a crushing tank body 1, a turbine rotor 2, a tank body cover 3, a mixing heating system, a shredded paper blowing system, a wind diversion system and a concentration control system.

[0026] The shredding tank 1 is a circular cylinder with a broken paper inlet 10 on the side wall. The turbine rotor 2 is arranged at the bottom of the shredding tank 1 and is driven to rotate by a motor-driven pulley 20. The bottom end is connected to a guide pipe 16. The tank cover 3 is buckled on the upper end of the shredding tank 1, and a metal filter 13 is arranged on the semicircular area.

[0027] The hybrid heating system, such as Figure 1 and Figure 6 As shown, it is composed of a white water pipeline 4, a steam-water mixing heater 12, a steam pipeline 5, a first automatic switch valve 201 and a second automatic switch valve 202. The inlet end of the steam-water mixing heater 12 is respectively controlled by the first automatic switch valve 201 and the second automatic switch valve 202 to connect to the white water pipeline 4 and the steam pipeline 5, and the outlet end is connected to the crushing tank 1 through a hot water pipeline 6;

[0028] The shredded paper blowing system, such as Figure 1 , Figure 3 and Figure 6 As shown, it is composed of a paper suction duct 15, a spray pipe 11, a ventilation duct 8, a paper shredding fan 17, an absorption disk 18 and a third automatic switch valve 203. The paper shredding fan 17 is arranged at a remote position, and the suction end is controlled and connected with the absorption disk 18 arranged in the "scattered damaged paper" generation area of ​​the rewinder or slitting machine and other equipment, and the discharge end is communicated with one end of the paper suction duct 15, and the other end of the paper suction duct 15 extends into the ventilation duct 8 and is connected with the shredding tank 1. The extended end of the spray pipe 11 is arranged at the middle height position of the broken paper delivery port 10, and the end is an inclined surface facing away from the broken paper delivery port 10. One end of the spray pipe 11 is connected to the white water pipe 4, and the other end is connected to the end portion of the paper suction air duct 15 and extends into the paper suction air duct 15. The end has a flat nozzle. The third automatic switch valve 203 is controlled to be connected to the spray pipe 11, and is linked to the switch of the paper shredder fan 17 to control the opening or closing of the spray pipe 11.

[0029] The wind diversion system, such as Figure 1 and Figure 6 As shown, it is composed of a broken paper filter chamber 14 and an exhaust duct 7. The broken paper filter chamber 14 entirely covers the semicircular area of ​​the metal filter screen 13 provided on the tank upper cover 3, and is connected and drained by the exhaust duct 7 to reduce or ease the wind force and wind pressure in the crushing tank 1;

[0030] The concentration control system, such as Figure 1 and Figure 6As shown, it is composed of a return pipe 9, a drainage pipe 16, a white water pipe 4, a concentration sensor 23, a discharge pump 19, a flange ball valve 301, a fourth automatic switch valve 204, a fifth automatic switch valve 205, a sixth automatic switch valve 206 and a seventh automatic switch valve 207. The fourth automatic switch valve 204 is controlled and connected to the drainage pipe 16, and the flange ball valve 301, the discharge pump 19, the concentration sensor 23 and the sixth automatic switch valve 206 are sequentially connected and installed on the drainage pipe 16. One end of the return pipe 9 is connected to the concentration sensor 23 and the sixth automatic switch valve The drain pipe 16 between the valves 206 is connected to the crushing tank 1 at the other end, and the white water pipe 4 is connected to the rear end of the discharge pump 19 by the seventh automatic switch valve 207. The fourth automatic switch valve 204 is opened or closed by the discharge pump 19. The fifth automatic switch valve 205 and the sixth automatic switch valve 206 are controlled by the concentration sensor 23 to be opened or closed alternately, and the return pipe 9 or the drain pipe 16 is connected alternately. The flange ball valve 301 is used to temporarily close the drain pipe 16 when adjusting and repairing the discharge pump 19.

[0031] At the same time, if Figure 6 The broken paper shredder is further provided with a pressure sensor 21 and a temperature sensor 22, which respectively control the preset upper limit liquid level of the broken paper pulp in the shredding tank 1 and the temperature of the initially introduced white water in the shredding tank 1. Example 2

[0032] A method for shredding high wet strength tipping paper, using a broken paper shredder with a processing capacity of 600 kg described in Example 1, comprising the following steps:

[0033] Step 1. Open the first automatic switch valve 201 and the second automatic switch valve 202 respectively arranged on the white water pipeline 4 and the steam pipeline 5, and simultaneously introduce white water and high-temperature steam into the steam-water mixing heater 12, quickly heat the white water to 75° C., and immediately introduce it into the crushing tank 1 until the amount of white water introduced reaches 80% of the calibrated water level of the crushing tank 1, and then close the first automatic switch valve 201 and the second automatic switch valve 202;

[0034] Step 2. According to the ratio standard of 15 kg per ton of broken paper, 9 kg of wet strength dissociation agent is added to the white water injected into the crushing tank 1 in step 1, and the turbine rotor 2 is started to rotate and stir evenly;

[0035] Step 3. Put the rated capacity of "large broken paper" into the shredding tank 1 from the broken paper inlet 10, control the turbine rotor 2 to continuously stir strongly at a speed of 540 rpm for 20 to 30 minutes to break up the "large broken paper", then reduce the speed of the turbine rotor 2 to 324 rpm, continue stirring and heat preservation and aging for 30 minutes; synchronized with the heat preservation and aging process, keep the flange ball valve 301 open, start the discharge pump 19, control the fourth automatic switch valve 204 to open, and guide the broken paper pulp in the shredding tank 1 into the guide pipe 16, and the concentration sensor 23 starts to detect and control the concentration of the broken paper pulp in the preset standard range of 4.5 to 4.6%;

[0036] When the concentration sensor 23 detects that the concentration value of the broken paper pulp is not within the range of 4.5-4.6%, the concentration sensor 23 controls the fifth automatic switch valve 205 to open, so that the broken paper pulp returns to the shredding tank 1 through the reflux pipe 9; at the same time, if the concentration of the broken paper pulp is lower than 4.5%, it is prompted to continue to put the "large broken paper" into the shredding tank 1 from the broken paper feeding port 10; and if the concentration of the broken paper pulp is higher than 4.6%, the seventh automatic switch valve 207 is controlled to open, and white water is introduced into the discharge pump 19, and the white water is replenished and injected into the shredding tank 1 through the drainage pipe 16 and the reflux pipe 9;

[0037] When the concentration sensor 23 detects that the broke pulp concentration is within the range of 4.5-4.6% and reaches the maturation time, the sixth automatic switch valve 206 is opened to allow the broke pulp to be directly drained to the matching broke pulp recovery system through the drainage pipe 16 and enter the next processing step;

[0038] Step 4. When the crushing tank 1 is emptied, the discharge pump 19 is turned off, the rotation of the turbine rotor 2 is stopped, and the process returns to step 1 to continue the next round of crushing operation, and the cycle repeats.

[0039] Meanwhile, during the whole process of step 1 to step 4, the shredding fan 17 can be started at any time and kept running, driving the absorption plate 18 to start collecting the "scattered damaged paper" on the production line. At the same time, the third automatic switch valve 203 is started by linkage control, and spray white water is introduced into the spray pipe 11, so that the "scattered damaged paper" is introduced into the paper suction air duct 15, and is sprayed with the spray white water and decelerated through the ventilation pipe 8 before being put into the shredding tank 1.

[0040] The production test of this embodiment shows that the broken paper shredding process method can cooperate with the operation of the high-moisture-strength tipping paper production line to continuously shred and reuse the broken paper produced by the high-moisture-strength tipping paper, which can not only achieve efficient utilization of resources, but also purify the production environment and ensure product quality. At the same time, all the production water used in the entire process is concentrated white water rich in fiber and filler recovered from the paper machine, without consuming water resources, which fully meets environmental protection requirements.

Claims

1. A broken paper shredder, characterized in that: include: A shredding tank body (1), a turbine rotor (2), a tank body cover (3), a mixing heating system, a shredded paper blowing system and a wind power dredging system; The shredding tank (1) is provided with an openable and closable broken paper inlet (10), the turbine rotor (2) is arranged at the bottom of the shredding tank (1), the bottom end of the shredding tank (1) is connected to a guide pipe (16), the tank upper cover (3) is buckled on the upper end of the shredding tank (1), and a metal filter (13) is arranged locally on the upper cover (3); the mixing and heating system comprises: a white water pipe (4), a steam-water mixing heater (12) and a steam pipe (5), the inlet end of the steam-water mixing heater (12) is respectively connected to the white water pipe (4) and the steam pipe (5), and the outlet end is connected to the white water pipe (4) and the steam pipe (5). The hot water pipe (6) is in communication with the shredding tank body (1); the shredded paper blowing system comprises: a paper suction air duct (15), an air discharge pipe (8) and a paper shredding fan (17); the paper shredding fan (17) is arranged at a remote position and is in communication with one end of the paper suction air duct (15); the other end of the paper suction air duct (15) extends into the air discharge pipe (8) and is in communication with the shredding tank body (1); the wind power discharge system comprises: a damaged paper filter chamber (14) and an exhaust pipe (7); the damaged paper filter chamber (14) entirely covers the area where the metal filter screen (13) is arranged on the tank body upper cover (3), and is connected and discharged through the exhaust pipe (7).

2. A broken paper shredder as claimed in claim 1, characterized in that: The extended end of the ventilation pipe (8) is arranged at a middle height position of the damaged paper delivery opening (10), and the end is an inclined surface facing away from the damaged paper delivery opening (10).

3. A broken paper shredder as claimed in claim 1, characterized in that: A pressure sensor (21) and a temperature sensor (22) are also provided. The pressure sensor (21) is provided at the bottom of the disintegration tank (1), and controls the preset upper limit liquid level in the disintegration tank (1) by controlling the closing of the white water pipeline (4) and the steam pipeline (5). The temperature sensor (22) is provided in the broken paper pulp, and controls the temperature of the white water initially introduced into the disintegration tank (1) by controlling and adjusting the opening of the steam pipeline (5).

4. A broken paper shredder according to any one of claims 1 to 3, characterized in that: The shredded paper blowing system further comprises a spray pipe (11), one end of the spray pipe (11) being connected to the white water pipe (4), and the other end of the spray pipe (11) being connected to an end portion installed at a connection end between the paper suction air duct (15) and the air discharge pipe (8), and extending into the paper suction air duct (15), the end portion having a flat nozzle.

5. A broken paper shredder as claimed in claim 4, characterized in that: The spray pipe (11) is linked with the paper shredding fan (17) to be opened or closed.

6. The broken paper shredder according to claim 5, further comprising a return pipe (9), one end of the return pipe (9) being connected to the upper space of the shredding tank (1), and the other end of the return pipe (9) being connected to the drainage pipe (16), the return pipe (9) and the drainage pipe (16), the white water pipe (4), the concentration sensor (23), the discharge pump (19), the flange ball valve (301), the fourth automatic switch valve (204), the fifth automatic switch valve (205), the sixth automatic switch valve (206) and the seventh automatic switch valve (207) together constitute a concentration control system; in: The fourth automatic on-off valve (204) is controllably connected to the drainage pipe (16), and the flange ball valve (301), the discharge pump (19), the concentration sensor (23), and the sixth automatic on-off valve (206) are sequentially connected and installed on the drainage pipe (16). One end of the return pipe (9) is connected to the drainage pipe (16) between the concentration sensor (23) and the sixth automatic on-off valve (206), and the other end is led into the crushing tank (1). At the same time, the return pipe (9) The fifth automatic switch valve (205) is also connected and installed on (9), the white water pipeline (4) is connected to the rear end of the discharge pump (19) by the seventh automatic switch valve (207), the fourth automatic switch valve (204) is controlled to open or close by the discharge pump (19), the fifth automatic switch valve (205) and the sixth automatic switch valve (206) are controlled by the concentration sensor (23) to be opened or closed alternately, and alternately conduct the return pipeline (9) or conduct the drainage pipeline (16).

7. A process for breaking broken paper containing a wet strength agent, characterized in that: The broken paper shredder according to claim 6 comprises the following steps: Step 1. Open the first automatic switch valve (201) and the second automatic switch valve (202) respectively arranged on the white water pipeline (4) and the steam pipeline (5), and simultaneously introduce white water and high-temperature steam into the steam-water mixing heater (12), quickly heat the white water to 60-80° C., and immediately introduce it into the crushing tank (1), until the amount of white water introduced reaches 70-80% of the calibrated water level of the crushing tank (1), and then close the first automatic switch valve (201) and the second automatic switch valve (202); Step 2. Add a wet strength dissociating agent to the white water injected into the disintegration tank (1) in step 1 at a ratio of 10 to 20 kg per ton of broken paper, and start the turbine rotor (2) to rotate and stir evenly; Step 3. The "large broken paper" containing a wet strength agent in an amount corresponding to the amount of white water injected in step 1 is introduced into the disintegration tank body (1) through the broken paper introduction port (10), and the turbine rotor (2) is controlled to rotate at a high speed to vigorously stir for 20 to 30 minutes, and then the rotation is reduced to a low speed and the stirring is continued for heat preservation and maturation for 20 to 30 minutes; synchronously with the heat preservation and maturation process, the flange ball valve (301) is kept open, the discharge pump (19) is started, and the fourth automatic switch valve (204) is controlled to be open, and the broken paper pulp in the disintegration tank body (1) is introduced into the guide pipe (16), and the concentration sensor (23) starts to detect the concentration of the broken paper pulp and control the concentration adjustment; When the concentration sensor (23) detects that the concentration value of the broken paper pulp is not within the preset control standard range, the concentration sensor (23) controls the fifth automatic switch valve (205) to open, so that the broken paper pulp returns to the disintegration tank (1) via the return pipe (9); at the same time, if the concentration of the broken paper pulp is lower than the lower limit of the preset control standard range, the "large broken paper" continues to be added from the broken paper feeding port (10) into the disintegration tank (1) to increase the concentration of the broken paper pulp; and if the concentration of the broken paper pulp is higher than the upper limit of the preset control standard range, the concentration sensor (23) controls the seventh automatic switch valve (207) to open, and white water is introduced into the discharge pump (19), and the white water is replenished and injected into the disintegration tank (1) via the drainage pipe (16) and the return pipe (9) to dilute the concentration of the broken paper pulp; When the concentration sensor (23) detects that the concentration value of the broken paper pulp is within the preset control standard range and reaches the maturation time, the sixth automatic switch valve (206) is opened to allow the broken paper pulp to be directly discharged to the matching broken paper pulp recovery system through the drainage pipe (16) to enter the next processing step; Step 4. When the crushing tank (1) is emptied, the discharge pump (19) is turned off, the rotation of the turbine rotor (2) is stopped, and the process returns to step 1, and the cycle repeats.

8. A process for breaking broken paper containing a wet strength agent as claimed in claim 7, characterized in that: During the execution of steps 1 to 4, the shredding blowing system can be started and continuously operated at any time, that is, the shredding fan (17) arranged at the remote end is started to drive the absorption plate (18) to start collecting the "scattered damaged paper" on the production line, and at the same time, the third automatic switch valve (203) is started by linkage control, and spray white water is introduced into the spray pipe (11), so that the "scattered damaged paper" is introduced into the paper suction air pipe (15), sprayed with the spray white water and decelerated through the air discharge pipe (8), and then put into the shredding tank (1).

9. A process for breaking broken paper containing a wet strength agent as claimed in claim 7 or 8, characterized in that: The wet strength dissociator added in step 2 is one of peroxide, persulfide or alkaline oxide.

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