A water closed cycle waste paper pulping system and process thereof

Abstract

The present invention provides a water-closed cycle waste paper pulping system and a process thereof, which relates to the technical field of pulping devices, and includes: a base, which is a rectangular plate-shaped structure, and is placed on the ground, and a box body with a rectangular box-shaped structure is fixed on the base. The present application, through the arrangement of the second barrel body and the third barrel body, firstly, can precipitate the pulp, and through precipitation, the excess water can be extracted, thereby ensuring the water content of the pulp; secondly, after the excess water is extracted, the water can be decomposed by a decomposition agent, and after decomposition, it can be put into the box body again for continued use, thereby realizing the circulation of water and saving water; the present application, through the arrangement of auxiliary components, firstly, the array-shaped air holes on the annular seat can improve the mixing effect of the pulp in the first barrel body, thereby improving the bleaching effect; secondly, under the telescopic action of the electric cylinder, the height change of the annular seat can be realized, thereby further improving the bleaching effect.

Description

Technical Field

[0001] The invention relates to the technical field of pulping devices, and in particular to a water closed circulation waste paper pulping system and a process thereof. Background Art

[0002] Waste paper pulping is the process of pulping discarded paper materials after crushing them. There are many steps in the pulping process, including crushing, deinking and bleaching, etc. Water is needed in the pulping process.

[0003] The existing device generates a lot of wastewater during the pulping process, and the wastewater needs to be treated by relevant wastewater treatment equipment, which increases the cost. It is not possible to precipitate and purify the water in the pulping process through improvement, and reuse the wastewater after treatment; during the deinking and bleaching process of the existing device, the contact effect between the pulping and the deinking agent and the bleaching agent is poor, which affects the deinking and bleaching effects.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a water closed circulation waste paper pulping system and process are provided, in order to achieve a more practical purpose. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a water closed cycle waste paper pulping system and a process thereof, so as to solve the problem that the existing device generates a lot of wastewater during the pulping process, and the wastewater needs to be treated by relevant wastewater treatment equipment, which increases the cost, and it is not possible to precipitate and purify the water in the pulping process through improvement, and reuse the wastewater after treatment; in the deinking and bleaching process of the existing device, the pulping has a poor contact effect with the deinking agent and the bleaching agent, which affects the deinking and bleaching effects.

[0006] The invention provides a water-closed cycle waste paper pulping system and a process thereof, which specifically comprises a base, which is a rectangular plate-shaped structure and is placed on the ground. A box body with a rectangular box-shaped structure is fixed on the base.

[0007] Furthermore, two crushing rollers are rotatably connected to the box body, the two crushing rollers are meshed with each other, and the two crushing rollers together form a waste paper crushing structure.

[0008] Furthermore, a first gear is welded on the front side of the pulverizing roller; a motor is fixed on the left end surface of the box body, a second gear is fixed on the rotating shaft of the motor, and the second gear is meshed with the first gear.

[0009] Furthermore, a drawer is plugged into the box body, and the drawer is located below the two crushing rollers. The bottom of the drawer is provided with screening holes in a linear array, and the screening holes are rectangular hole structures.

[0010] Furthermore, a connecting hole is provided on the drawer, and the connecting hole is a rectangular hole structure, and the connecting hole is connected to the first screening hole on the right side.

[0011] Furthermore, four spring rods are fixed to the bottom end surface of the inner wall of the box body, and the upper ends of the four spring rods are protruding ends. The upper ends of the four spring rods are fixed to the bottom end surface of the auxiliary plate. The auxiliary plate is a rectangular plate structure, and the auxiliary plate is provided with through holes with rectangular hole structures in a linear array. The auxiliary plate is located below the drawer.

[0012] Furthermore, two cylindrical rod-shaped stress-bearing rods are welded to the top surface of the auxiliary plate, and the upper ends of the two stress-bearing rods pass through the screening holes. The upper first ends of the two stress-bearing rods are polished. After polishing, the upper ends of the two stress-bearing rods are respectively engaged with the two crushing rollers. When the two crushing rollers rotate, the two stress-bearing rods are in an up and down reciprocating motion state.

[0013] Furthermore, a first barrel body is fixed on the top surface of the base, a first cover plate is buckled on the top of the first barrel body, a first liquid pump is fixed on the first cover plate, a liquid suction pipe of the first liquid pump is connected to the box body, and a liquid discharge pipe of the first liquid pump is connected to the first barrel body.

[0014] Furthermore, a second barrel body is fixed on the top surface of the base, a second cover plate is buckled on the top of the second barrel body, a second liquid pump is fixed on the second cover plate, a liquid suction pipe of the second liquid pump is connected to the first barrel body, and a liquid discharge pipe of the second liquid pump is connected to the second barrel body.

[0015] Furthermore, a third barrel body is fixed on the top surface of the base, a third cover plate is buckled on the top of the third barrel body, a third liquid pump is fixed on the third cover plate, a liquid suction pipe of the third liquid pump is connected to the second barrel body, and a liquid discharge pipe of the third liquid pump is connected to the third barrel body.

[0016] Furthermore, an auxiliary component is installed on the first cover plate, and the auxiliary component consists of a connecting pipe, an annular seat, a mounting plate and an electric cylinder. A connecting pipe is slidably connected to the first cover plate, and the connecting pipe is connected to the air supply pipe. An annular seat with an annular structure is welded under the connecting pipe, and through holes are opened in an array on the annular seat. The annular seat is located inside the first barrel body, and a mounting plate with an annular structure is welded to the connecting pipe. An electric cylinder for adjusting the height of the connecting pipe is fixed between the mounting plate and the first cover plate.

[0017] Furthermore, a control box is fixed on the front end surface of the box body, and a microprocessor is installed in the control box. The microprocessor is electrically connected to an external power supply, and the microprocessor is electrically connected to the first liquid pump, the second liquid pump, the third liquid pump, the electric cylinder and the motor.

[0018] A pulping process of a water closed cycle waste paper pulping system comprises the following steps:

[0019] 01. Put the waste paper onto the shredding rollers, and the microprocessor controls the motor to work. When the motor rotates, the second gear and the first gear are meshed to drive the two shredding rollers to rotate, and the waste paper is shredded.

[0020] 02. The shredded waste paper falls onto the drawer, and then falls to the bottom of the box after being screened through the screening holes on the drawer;

[0021] 03. Pull out the drawer and put the large pieces of waste paper screened out from the drawer into the two crushing rollers for crushing;

[0022] 04. Add water and ink remover into the box, and remove the ink from the fragments that fall to the bottom of the box;

[0023] 05. When the crushing roller rotates, it can continuously squeeze the force-bearing rod. At this time, the force-bearing rod drives the auxiliary plate to reciprocate up and down to achieve full mixing of the fragments and the ink removal agent;

[0024] 06. The microprocessor controls the first liquid pump to extract the mixture of the ink-removed fragments and the liquid and discharge it into the first barrel, and bleaching agent is added into the first barrel for bleaching;

[0025] 07. Open the valve on the gas supply pipeline, the gas enters the annular seat through the connecting pipe and is ejected from the annular seat to achieve auxiliary mixing. The microprocessor controls the electric cylinder to continuously extend and retract to improve the mixing effect;

[0026] 08. The microprocessor controls the second liquid pump to extract the bleached pulp and discharge it into the second barrel for sedimentation;

[0027] 09. The microprocessor controls the operation of the third liquid extraction pump to extract the excess water after sedimentation and discharge it into the third barrel. A decomposition agent is added to the third barrel. After decomposition, the decomposed water can be extracted through an external pump body, and the extracted water can be added to the box for reuse.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present application, through the provision of the second barrel body and the third barrel body, firstly, can precipitate the pulp, and the excess water can be extracted through the precipitation, thereby ensuring the water content of the pulp; secondly, after the excess water is extracted, the water can be decomposed by a decomposition agent, and after decomposition, it can be put back into the box for continued use, thus realizing the circulation of water and saving water.

[0030] The present application provides auxiliary components. Firstly, the array-shaped air holes on the annular seat can improve the mixing effect of the pulp in the first barrel, thereby improving the bleaching effect. Secondly, under the telescopic action of the electric cylinder, the height of the annular seat can be changed, further improving the bleaching effect.

[0031] The present application, through the arrangement of spring rods, auxiliary plates and force-bearing rods, can realize the reciprocating motion of the auxiliary plates during the rotation of the crushing rollers. In the process of the up and down reciprocating motion of the auxiliary plates, the mixing of the pulp can be achieved, thereby improving the contact effect between the pulp and the ink remover, and ultimately improving the ink removal effect. Compared with the existing devices, the present application does not require a separate drive when improving the ink removal effect, thus saving costs.

[0032] The present application can intercept large pieces of waste paper by setting up drawers and screening holes, and after interception, the large pieces of waste paper can be put into the crushing roller again for re-crushing, thereby improving the crushing effect of the waste paper and also improving the accuracy of the pulp. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0034] In the attached picture:

[0035] Figure 1 It shows an axial structural schematic diagram of a water closed cycle waste paper pulping system according to the present invention;

[0036] Figure 2 The schematic diagram of the axial structure of the water closed cycle waste paper pulping system according to the present invention after partial removal is shown;

[0037] Figure 3 It is shown that according to the present invention Figure 2 Schematic diagram of the axial structure after rotation;

[0038] Figure 4 It is shown that according to the present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0039] Figure 5 It shows a schematic diagram of the axial structure of the drawer, the screening hole and the connecting hole according to the present invention;

[0040] Figure 6 It shows an axial structural schematic diagram of an auxiliary component according to the present invention;

[0041] Figure 7 It is shown that according to the present invention Figure 6 A schematic diagram of the enlarged structure at B;

[0042] Figure 8The schematic diagram of the axial structure of the spring rod, the auxiliary plate and the force-bearing rod according to the present invention is shown.

[0043] Fig. 9 A schematic diagram of the system composition according to the present invention is shown.

[0044] Reference numerals list

[0045] 1. Base;

[0046] 2. Box body; 201. Crushing roller; 202. First gear; 203. Motor; 204. Second gear;

[0047] 3. Drawer; 301. Screening hole; 302. Connection hole;

[0048] 4. Spring rod; 401. Auxiliary plate; 402. Force rod;

[0049] 5. first barrel; 501. first cover plate; 502. first liquid pump;

[0050] 6. Second barrel; 601. Second cover plate; 602. Second liquid pump;

[0051] 7. The third barrel; 701. The third cover plate; 702. The third liquid pump;

[0052] 8. Auxiliary components; 801. Connecting pipe; 802. Ring seat; 803. Mounting plate; 804. Electric cylinder;

[0053] 9. Control box; 901. Microprocessor. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless the embodiments of the present invention are clearly defined in this way.

[0056] The words "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "one", "one" or "the" and similar words do not indicate a quantity limitation, but indicate the existence of at least one. Similarly, the words "include" or "comprise" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, the spatial and directional terms such as "upper", "lower", "front", "back", "top", "bottom", "vertical" and "horizontal" may be used to describe the embodiments of the present invention, but it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures, and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect", "couple", "fix" and "attach" may refer to the direct connection between two elements or structures without other elements or structures, or may refer to the indirect connection between two elements or structures through an intermediate element or structure, unless otherwise clearly stated in this article.

[0057] Embodiment 1:

[0058] As attached Figure 1 To Attachment Fig. 9 As shown:

[0059] The present invention provides a water-closed cycle waste paper pulping system and process thereof, comprising: a base 1, the base 1 is a rectangular plate structure, the base 1 is placed on the ground, and a box body 2 with a rectangular box structure is fixed on the base 1.

[0060] There are two crushing rollers 201 rotatably connected to the box body 2 . The two crushing rollers 201 are meshed with each other, and together form a waste paper crushing structure.

[0061] Among them, a first gear 202 is welded on a pulverizing roller 201 on the front side; a motor 203 is fixed on the left end face of the box body 2, and a second gear 204 is fixed on the rotating shaft of the motor 203, and the second gear 204 is meshed with the first gear 202. When pulverizing, the waste paper is put into the pulverizing roller 201, and the microprocessor 901 controls the motor 203 to work. When the motor 203 rotates, the meshing transmission of the second gear 204 and the first gear 202 can realize the rotation of the two pulverizing rollers 201, and the pulverization of the waste paper is realized at this time.

[0062] A drawer 3 is plugged into the box body 2. The drawer 3 is located below the two crushing rollers 201. Screening holes 301 are provided in a linear array at the bottom of the drawer 3. The screening holes 301 are rectangular hole structures.

[0063] Among them, a connecting hole 302 is opened on the drawer 3, and the connecting hole 302 is a rectangular hole structure. The connecting hole 302 is connected with the first screening hole 301 on the right. The crushed waste paper falls onto the drawer 3, and falls downward to the bottom of the box body 2 after being screened by the screening hole 301 on the drawer 3; the drawer 3 is pulled out, and the large pieces of waste paper screened out of the drawer 3 are put into the two crushing rollers 201 again for crushing.

[0064] Among them, four spring rods 4 are fixed to the bottom end surface of the inner wall of the box body 2, and the upper ends of the four spring rods 4 are extended ends. The upper ends of the four spring rods 4 are fixed to the bottom end surface of the auxiliary plate 401. The auxiliary plate 401 is a rectangular plate structure. The auxiliary plate 401 is provided with through holes with a rectangular hole structure in a linear array. The auxiliary plate 401 is located at the lower position of the drawer 3.

[0065] Among them, two cylindrical rod-shaped stress-bearing rods 402 are welded on the top surface of the auxiliary plate 401, and the upper ends of the two stress-bearing rods 402 pass through the screening hole 301. The upper first ends of the two stress-bearing rods 402 are polished. After polishing, the upper ends of the two stress-bearing rods 402 are respectively engaged with the two crushing rollers 201. When the two crushing rollers 201 rotate, the two stress-bearing rods 402 are in an up and down reciprocating motion state. When in use, water and ink removal agent are added to the box body 2, and the fragments that fall to the bottom of the box body 2 are de-inked by the ink removal agent; when the crushing roller 201 rotates, it can continuously squeeze the stress-bearing rod 402. At this time, the stress-bearing rod 402 drives the auxiliary plate 401 to reciprocate up and down to achieve sufficient mixing of the fragments and the ink removal agent.

[0066] Among them, a first barrel body 5 is fixed on the top surface of the base 1, a first cover plate 501 is buckled on the top of the first barrel body 5, a first liquid pump 502 is fixed on the first cover plate 501, the liquid suction pipe of the first liquid pump 502 is connected to the box body 2, and the liquid discharge pipe of the first liquid pump 502 is connected to the first barrel body 5. The first liquid pump 502 is controlled to work, and the mixture of the fragments and the liquid after ink removal is extracted and discharged into the first barrel body 5, and bleaching agent is added to the first barrel body 5 for bleaching; the valve on the air supply pipeline is opened, and the gas enters the annular seat 802 through the connecting pipe 801 and is sprayed out through the annular seat 802 to achieve auxiliary mixing, and the microprocessor 901 controls the electric cylinder 804 to continuously extend and retract to improve the mixing effect.

[0067] Among them, a second barrel body 6 is fixed on the top surface of the base 1, a second cover plate 601 is buckled on the top of the second barrel body 6, a second liquid pump 602 is fixed on the second cover plate 601, the liquid suction pipe of the second liquid pump 602 is connected to the first barrel body 5, and the liquid discharge pipe of the second liquid pump 602 is connected to the second barrel body 6. The second liquid pump 602 is controlled to work, and the pulp after bleaching is extracted and discharged into the second barrel body 6 for sedimentation.

[0068] Among them, a third barrel body 7 is fixed to the top surface of the base 1, a third cover plate 701 is buckled on the top of the third barrel body 7, a third liquid pump 702 is fixed on the third cover plate 701, a liquid suction pipe of the third liquid pump 702 is connected to the second barrel body 6, and a liquid discharge pipe of the third liquid pump 702 is connected to the third barrel body 7. The third liquid pump 702 is controlled to work, and excess water after precipitation is extracted and discharged into the third barrel body 7. A decomposition agent is added into the third barrel body 7. After decomposition, the decomposed water can be extracted by an external pump body, and the extracted water can be added to the box body 2 for reuse.

[0069] Among them, an auxiliary component 8 is installed on the first cover plate 501, and the auxiliary component 8 consists of a connecting pipe 801, an annular seat 802, a mounting plate 803 and an electric cylinder 804. A connecting pipe 801 is slidably connected to the first cover plate 501, and the connecting pipe 801 is connected to the air supply pipe. An annular seat 802 with an annular structure is welded below the connecting pipe 801, and the annular seat 802 is provided with through holes in an array. The annular seat 802 is located inside the first barrel body 5, and an annular mounting plate 803 with an annular structure is welded to the connecting pipe 801. An electric cylinder 804 for adjusting the height of the connecting pipe 801 is fixed between the mounting plate 803 and the first cover plate 501.

[0070] Embodiment 2:

[0071] On the basis of embodiment one, a control box 9 is fixed on the front end face of the box body 2, and a microprocessor 901 is installed in the control box 9. The microprocessor 901 is electrically connected to an external power supply. The microprocessor 901 is electrically connected to the first liquid pump 502, the second liquid pump 602, the third liquid pump 702, the electric cylinder 804 and the motor 203. During use, the first liquid pump 502, the second liquid pump 602, the third liquid pump 702, the electric cylinder 804 and the motor 203 can be controlled by the microprocessor 901 to work.

[0072] A pulping process of a water closed cycle waste paper pulping system, comprising the following steps:

[0073] 01. Put the waste paper onto the crushing roller 201, and the microprocessor 901 controls the motor 203 to work. When the motor 203 rotates, the second gear 204 and the first gear 202 are meshed and driven, so that the two crushing rollers 201 can rotate, and the waste paper is crushed;

[0074] 02. The shredded waste paper falls onto the drawer 3, and after being screened by the screening holes 301 on the drawer 3, falls downward to the bottom of the box 2;

[0075] 03. Pull out the drawer 3, and put the large pieces of waste paper screened out of the drawer 3 into the two crushing rollers 201 for crushing again;

[0076] 04. Add water and ink remover into the box 2, and remove the ink from the fragments that fall to the bottom of the box 2;

[0077] 05. When the crushing roller 201 rotates, it can continuously squeeze the force-bearing rod 402. At this time, the force-bearing rod 402 drives the auxiliary plate 401 to reciprocate up and down to achieve full mixing of the fragments and the ink removal agent;

[0078] 06. The microprocessor 901 controls the first liquid pump 502 to work, extracts the mixture of the ink-removed fragments and the liquid and discharges it into the first barrel 5, and adds bleaching agent into the first barrel 5 for bleaching;

[0079] 07. Open the valve on the gas supply pipeline, the gas enters the annular seat 802 through the connecting pipe 801 and is ejected from the annular seat 802 to achieve auxiliary mixing, and the microprocessor 901 controls the electric cylinder 804 to continuously extend and retract to improve the mixing effect;

[0080] 08. The microprocessor 901 controls the second liquid pump 602 to extract the bleached pulp and discharge it into the second barrel 6 for sedimentation;

[0081] 09. The microprocessor 901 controls the third liquid pump 702 to extract the excess water after sedimentation and discharge it into the third barrel body 7, and add a decomposing agent into the third barrel body 7. After decomposition, the decomposed water can be extracted by an external pump body, and the extracted water can be added to the box body 2 for reuse.

[0082] The specific usage and function of this embodiment are as follows:

[0083] When in use, waste paper is put into the shredding roller 201, and the microprocessor 901 controls the motor 203 to work. When the motor 203 rotates, the meshing transmission of the second gear 204 and the first gear 202 can realize the rotation of the two shredding rollers 201, and the shredding of the waste paper is realized at this time; the shredded waste paper falls onto the drawer 3, and falls downward to the bottom of the box body 2 after being screened by the screening holes 301 on the drawer 3; the drawer 3 is pulled out, and the large pieces of waste paper screened out of the drawer 3 are put into the two shredding rollers 201 again for shredding; water and ink removal agent are added to the box body 2, and the fragments that fall to the bottom of the box body 2 are de-inked by the ink removal agent; at the same time, when the shredding roller 201 rotates, it can continuously squeeze the force rod 402, and at this time the force rod 402 drives the auxiliary plate 401 to reciprocate up and down to realize the full mixing of the fragments and the ink removal agent; after the ink removal is completed, the microprocessor 901 The first liquid pump 502 is controlled to work, the mixture of the fragments and the liquid after ink removal is extracted and discharged into the first barrel 5, and bleaching agent is added to the first barrel 5 for bleaching; during the bleaching process, the valve on the air supply pipeline is opened, and the gas enters the annular seat 802 through the connecting pipe 801 and is sprayed out through the annular seat 802 to achieve auxiliary mixing, and the microprocessor 901 controls the electric cylinder 804 to continuously extend and retract to improve the mixing effect; after the bleaching is completed, the microprocessor 901 controls the second liquid pump 602 to work, and the pulp after bleaching is extracted and discharged into the second barrel 6 for sedimentation; after the sedimentation is completed, the microprocessor 901 controls the third liquid pump 702 to work, and the excess water after sedimentation is extracted and discharged into the third barrel 7, and a decomposition agent is added to the third barrel 7. After decomposition, the decomposed water can be extracted through the external pump body, and the extracted water can be added to the box 2 for reuse.

[0084] The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A water closed cycle waste paper pulping system, characterized in that: include: A base (1), the base (1) being a rectangular plate-shaped structure, the base (1) being placed on the ground, a box body (2) having a rectangular box-shaped structure being fixed on the base (1); two crushing rollers (201) being rotatably connected to the box body (2), the two crushing rollers (201) being meshed with each other, and the two crushing rollers (201) together forming a waste paper crushing structure; a first gear (202) being welded to a front crushing roller (201); a motor (203) being fixed to a left end face of the box body (2), a second gear (204) being fixed to a rotating shaft of the motor (203), and the second gear (204) being meshed with the first gear (202); a drawer (3) being plugged into the box body (2), the drawer (3) being located below the two crushing rollers (201), the bottom of the drawer (3) being provided with screening holes (301) in a linear array, the screening holes (301) being a rectangular hole-shaped structure; A first barrel body (5) is fixed on the top surface of the base (1), a first cover plate (501) is buckled on the top of the first barrel body (5), a first liquid pump (502) is fixed on the first cover plate (501), a liquid suction pipe of the first liquid pump (502) is connected to the box body (2), and a liquid discharge pipe of the first liquid pump (502) is connected to the first barrel body (5); the first liquid pump (502) is controlled to work, a mixture of the fragments and the liquid after ink removal is extracted and discharged into the first barrel body (5), and a bleaching agent is added into the first barrel body (5) for bleaching; A second barrel body (6) is fixed on the top surface of the base (1); a second cover plate (601) is buckled on the top of the second barrel body (6); a second liquid pump (602) is fixed on the second cover plate (601); a liquid pumping pipe of the second liquid pump (602) is connected to the first barrel body (5); and a liquid discharge pipe of the second liquid pump (602) is connected to the second barrel body (6); the second liquid pump (602) is controlled to work, and the bleached pulp is extracted and discharged into the second barrel body (6) for sedimentation; A third barrel body (7) is fixed to the top surface of the base (1); a third cover plate (701) is buckled on the top of the third barrel body (7); a third liquid pump (702) is fixed on the third cover plate (701); a liquid pumping pipe of the third liquid pump (702) is connected to the second barrel body (6); and a liquid discharge pipe of the third liquid pump (702) is connected to the third barrel body (7); the third liquid pump (702) is controlled to operate, excess water after precipitation is extracted and discharged into the third barrel body (7); a decomposing agent is added into the third barrel body (7); after decomposition, the decomposed water can be extracted by an external pump body; the extracted water can be added to the box body (2) for reuse.

2. A water-closed cycle waste paper pulping system as claimed in claim 1, characterized in that: The drawer (3) is provided with a connecting hole (302), which is a rectangular hole structure, and the connecting hole (302) is connected to the first screening hole (301) on the right side.

3. A water-closed cycle waste paper pulping system as claimed in claim 2, characterized in that: Four spring rods (4) are fixed to the bottom end surface of the inner wall of the box body (2), the upper ends of the four spring rods (4) are protruding ends, and the upper ends of the four spring rods (4) are fixed to the bottom end surface of the auxiliary plate (401). The auxiliary plate (401) is a rectangular plate structure, and the auxiliary plate (401) is provided with through holes in a rectangular hole structure in a linear array. The auxiliary plate (401) is located below the drawer (3).

4. A water-closed cycle waste paper pulping system as claimed in claim 3, characterized in that: Two cylindrical rod-shaped stress-bearing rods (402) are welded to the top surface of the auxiliary plate (401); the upper ends of the two stress-bearing rods (402) pass through the screening hole (301); the upper first ends of the two stress-bearing rods (402) are polished; after the polishing, the upper ends of the two stress-bearing rods (402) are respectively engaged with the two crushing rollers (201); when the two crushing rollers (201) rotate, the two stress-bearing rods (402) are in an up-and-down reciprocating motion state.

5. A water-closed cycle waste paper pulping system as claimed in claim 4, characterized in that: An auxiliary component (8) is installed on the first cover plate (501), and the auxiliary component (8) is composed of a connecting pipe (801), an annular seat (802), a mounting plate (803) and an electric cylinder (804). A connecting pipe (801) is slidably connected to the first cover plate (501), and the connecting pipe (801) is connected to the air supply pipe. An annular seat (802) with an annular structure is welded below the connecting pipe (801), and the annular seat (802) is provided with through holes in an array. The annular seat (802) is located inside the first barrel body (5). An annular mounting plate (803) with an annular structure is welded to the connecting pipe (801), and an electric cylinder (804) for adjusting the height of the connecting pipe (801) is fixed between the mounting plate (803) and the first cover plate (501).

6. A water-closed cycle waste paper pulping system as claimed in claim 5, characterized in that: A control box (9) is fixed to the front end surface of the box body (2), a microprocessor (901) is installed in the control box (9), the microprocessor (901) is electrically connected to an external power supply, and the microprocessor (901) is electrically connected to the first liquid pump (502), the second liquid pump (602), the third liquid pump (702), the electric cylinder (804) and the motor (203).

7. The pulping process of the water closed cycle waste paper pulping system according to claim 6, characterized in that: The following steps are involved:

01. Waste paper is placed on the shredding roller (201), and the microprocessor (901) controls the motor (203) to work. When the motor (203) rotates, the meshing transmission between the second gear (204) and the first gear (202) can realize the rotation of the two shredding rollers (201), and the waste paper is shredded at this time; 02. The shredded waste paper falls onto the drawer (3), is screened through the screening holes (301) on the drawer (3), and then falls downward to the bottom of the box (2); 03. Pull out the drawer (3), and put the large pieces of waste paper screened out of the drawer (3) into the two crushing rollers (201) for crushing again; 04. Add water and ink removal agent into the box (2), and remove ink from the fragments that fall to the bottom of the box (2); 05. When the crushing roller (201) rotates, it can continuously squeeze the force-bearing rod (402), and at this time, the force-bearing rod (402) drives the auxiliary plate (401) to reciprocate up and down to achieve full mixing of the fragments and the ink removal agent; 06. The microprocessor (901) controls the first liquid extraction pump (502) to operate, extracts the mixture of the ink-removed fragments and the liquid and discharges it into the first barrel (5), and adds bleaching agent into the first barrel (5) for bleaching; 07. Open the valve on the gas supply pipeline, the gas enters the annular seat (802) through the connecting pipe (801) and is ejected through the annular seat (802) to achieve auxiliary mixing, and the microprocessor (901) controls the electric cylinder (804) to continuously extend and retract to improve the mixing effect; 08. The microprocessor (901) controls the second liquid extraction pump (602) to operate, extracting the bleached pulp and discharging it into the second barrel (6) for sedimentation; 09. The microprocessor (901) controls the third liquid extraction pump (702) to extract excess water after sedimentation and discharge it into the third barrel (7). A decomposing agent is added into the third barrel (7). After decomposition, the decomposed water can be extracted through an external pump body. The extracted water can be added to the box (2) for reuse.

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