A waste paper pulp decoloring and toning device

Abstract

This invention provides a waste paper pulp decolorization and color adjustment device, relating to the field of waste paper pulp recycling technology. It includes: a processing tank; a top support frame fixedly installed on the top of the processing tank; a vertical rotating shaft connected inside the processing tank and connected to the top support frame; a drive motor fixedly installed outside the processing tank; a synchronous belt connected to the top of the drive motor and connected to the top of the vertical rotating shaft; and a planetary rotating frame connected to the outside of the vertical rotating shaft, located inside the top of the processing tank. The drive motor, through the transmission action of the synchronous belt, drives the vertical rotating shaft to rotate, causing the large impeller on the vertical rotating shaft to rotate accordingly. This efficiently mixes and stirs the waste paper pulp inside the processing tank, effectively accelerating the flow rate of the waste paper pulp within the tank. This solves the problem in the bleaching and decolorization process of waste paper pulp where it is difficult to achieve sufficient and uniform mixing of the bleaching agent and the waste paper pulp, easily leading to inconsistent decolorization results.

Description

Technical Field

[0001] This invention relates to the field of papermaking waste pulp recycling technology, and in particular to a waste pulp decolorization and color adjustment device. Background Technology

[0002] Waste paper pulp, also known as recycled pulp, is made from recycled paper and paperboard. Because recycled paper comes from a wide variety of sources and has diverse types and properties, this directly affects the quality and uses of waste paper pulp. Typically, waste paper pulp obtained from ordinary waste paper and paperboard has relatively low strength, so it is often used as a filler for low-strength paperboard to increase its volume and reduce costs. This type of waste paper pulp is also frequently used to produce certain types of packaging paper to meet the needs of the packaging industry. It is also applied in the construction field to produce construction paperboard, providing an environmentally friendly and economical material option for construction.

[0003] For example, Chinese patent "CN105256635B A bleaching device for pulp" includes a bleaching tower with a discharge port at the top and a feed port and feed channel communicating with the feed port at the bottom. The lower part of the bleaching tower has at least one chemical dosing port. It also includes a storage hopper and a feeding mechanism. The storage hopper is located below the bleaching tower, and the feed channel communicates with the upper end of the storage hopper. A feed port is opened on the storage hopper. The feeding mechanism includes a feeding screw and a power source for driving the feeding screw to rotate. The feeding screw is inserted into the storage hopper, the feed channel, and the bleaching tower.

[0004] Currently, in the decolorization and color conditioning process of waste paper pulp, the waste paper pulp must first be transferred to a decolorization tank, and then bleaching agent is added for decolorization treatment. In the bleaching and decolorization stage, it is difficult to achieve sufficient and uniform mixing between the bleaching agent and the waste paper pulp, which easily leads to inconsistent decolorization results. After decolorization, the waste paper pulp must be transferred to a color conditioning tank, and then the operator manually mixes the dye of the required color and adds it to the color conditioning tank to dye the waste paper pulp. Since the dye ratio depends on manual operation, color conditioning deviation is very likely to occur, which can easily affect the quality of the final product. Summary of the Invention

[0005] This invention relates to a waste paper pulp decolorization and color adjustment device, which solves the problem that in the current waste paper pulp decolorization and color adjustment process, the waste paper pulp must first be transferred to a decolorization tank before adding bleaching agent for decolorization treatment. In the bleaching and decolorization stage, it is difficult to achieve sufficient and uniform mixing between the bleaching agent and the waste paper pulp, which easily leads to inconsistent decolorization results. After decolorization, the waste paper pulp still needs to be transferred to a color adjustment tank, and then the operator manually mixes the required color dye and adds it to the color adjustment tank to dye the waste paper pulp. Since the dye ratio depends on manual operation, color adjustment deviations are very likely to occur, which can easily affect the quality of the final product.

[0006] In a first aspect, this invention provides a waste paper pulp decolorization and toning device, specifically comprising: a processing tank, a top support frame, a vertical rotating shaft, a drive motor, a synchronous belt, a planetary rotating frame, vertical guide tubes, a retaining rotating frame, and a toning device; the top support frame is fixedly installed on the top of the processing tank, and the vertical rotating shaft is connected inside the processing tank and connected to the top support frame; the drive motor is fixedly installed outside the processing tank, and the top of the drive motor is connected to the synchronous belt, which is connected to the top of the vertical rotating shaft; the planetary rotating frame is connected to the outside of the vertical rotating shaft, and the planetary rotating frame is located inside the top of the processing tank; two vertical guide tubes are connected inside the planetary rotating frame, and the vertical guide tubes are located inside the processing tank; the retaining rotating frame is connected to the outside of the vertical rotating shaft, and the retaining rotating frame is connected to the two vertical guide tubes; a toning device is installed inside the top of the top support frame.

[0007] Furthermore, the bottom of the vertical rotating shaft is rotatably connected to the processing tank, the top of the vertical rotating shaft is rotatably connected to the top support frame, and a large impeller is installed near the bottom of the vertical rotating shaft.

[0008] Furthermore, a large pulley is installed at the top of the vertical rotating shaft, and a small pulley is installed at the top of the drive motor. The small pulley is connected to the large pulley via a synchronous belt. The drive motor drives the vertical rotating shaft to rotate with the help of the synchronous belt. The large impeller on the vertical rotating shaft rotates accordingly, which carries out efficient mixing and stirring of the waste paper pulp in the treatment tank, effectively accelerating the flow rate of the waste paper pulp in the tank.

[0009] Furthermore, the vertical rotating shaft is rotatably connected to the planetary rotating frame, and a sun gear is installed on the outside of the vertical rotating shaft. The sun gear is located inside the planetary rotating frame, and the vertical rotating shaft is rotatably connected to the rotating frame.

[0010] Furthermore, the vertical guide tube is rotatably connected to the planetary rotating frame, maintaining the rotatable connection between the rotating frame and the vertical guide tube. A funnel is provided at the top of the vertical guide tube, and a small impeller is provided at the bottom of the vertical guide tube.

[0011] Furthermore, a planetary gear is installed near the top of the vertical guide tube. The planetary gear is located inside the planetary rotating frame. A gear ring is installed on the top of the treatment tank. The gear ring meshes with two planetary gears, and the planetary gears mesh with the sun gear. The planetary gear is located between the gear ring and the sun gear. The bleaching agent required for decolorizing waste paper pulp is slowly poured into the funnel. As the vertical shaft starts to rotate, the sun gear installed on the vertical shaft rotates synchronously, which in turn drives the planetary gears that mesh with it to start running. Since the planetary gears mesh with the gear ring fixed on the treatment tank, the vertical guide tube rotates on its own axis and revolves around the vertical shaft under the drive of the planetary gears. The bleaching agent discharged from the bottom of the vertical guide tube is evenly distributed in a circular pattern. The small impeller running on the vertical guide tube plays a full role in accelerating the diffusion speed of the bleaching agent to the surrounding area.

[0012] Furthermore, the color mixing device consists of a hopper, a feed solenoid valve, a mixing tank, and a discharge solenoid valve. The mixing tank is fixedly connected inside the top support frame, and the feed solenoid valve, the mixing tank, and the discharge solenoid valve are connected to a computer through a PLC system.

[0013] Furthermore, there are three hoppers. The bottom of the hopper is connected to the feed solenoid valve, and the three feed solenoid valves are connected to the top of the mixing tank. The discharge solenoid valve is connected to the bottom of the mixing tank and is located above the funnel. After the waste paper pulp completes the bleaching and decolorization process, the operator selects the desired color on the computer. The computer then uses the PLC system to precisely control the opening duration of the three feed solenoid valves, thereby accurately controlling the amount added and ensuring that the dye in the hopper can be injected into the mixing tank as needed. The computer, again through the PLC system, drives the mixing structure in the mixing tank to operate, promoting thorough mixing of the dye and thus preparing the dye that meets the requirements. After the dye preparation is completed, the computer controls the discharge solenoid valve to open through the PLC system. At this time, the drive motor is in a stopped state, and the dye falls into the funnel. The drive motor starts, driving the vertical guide tube to rotate, so that the dye is evenly distributed in the waste paper pulp.

[0014] This invention provides a waste paper pulp decolorization and color adjustment device, which has the following beneficial effects: In use, the drive motor drives the vertical shaft to rotate smoothly through the synchronous belt transmission mechanism. As the vertical shaft rotates, the large impeller mounted on it begins to operate efficiently, performing a powerful and uniform mixing and stirring operation on the waste paper pulp in the processing tank. This significantly accelerates the circulation rate of the waste paper pulp inside the tank, ensuring that the waste paper pulp and bleaching agent can fully contact and deeply mix, thereby efficiently achieving the goal of bleaching and decolorizing the waste paper pulp and greatly improving the processing effect.

[0015] In addition, the bleaching agent required for decolorizing waste paper pulp is slowly poured into the funnel at a suitable flow rate. As the vertical shaft starts to rotate, the sun gear installed on it also rotates synchronously. The rotation of the sun gear immediately drives the planetary gears that are precisely meshed with it to start operating in an orderly manner. Since the planetary gears are in a transmission meshing state with the gear rings that are firmly fixed on the treatment tank, the vertical guide tube rotates on its own axis while revolving around the vertical shaft. The bleaching agent discharged from the bottom of the vertical guide tube is evenly spread in a circular manner. The small impeller rotating at high speed on the vertical guide tube fully exerts its stirring and diffusion function, further accelerating the diffusion rate of the bleaching agent into the surrounding waste paper pulp. With the synergistic and efficient action of rotation, revolution, and small impeller, the bleaching agent can fully and evenly penetrate every tiny part of the waste paper pulp in a very short time, thereby significantly improving the bleaching and decolorizing effect of the waste paper pulp and ensuring that the decolorization operation meets high-quality standards.

[0016] In addition, after the waste paper pulp has completed the bleaching and decolorization process, the operator can select the target color on the computer. The computer, relying on the PLC system, precisely controls the opening time of the three feed solenoid valves, thereby accurately controlling the amount of dye added and ensuring that the dye in the hopper is injected into the mixing tank according to the predetermined requirements. The computer, again with the help of the PLC system, drives the mixing structure in the mixing tank to start running, allowing the dye to mix thoroughly and finally mix the color dye that meets the set requirements. After the dye is mixed, the computer controls the discharge solenoid valve to open through the PLC system. At this time, the drive motor is in a stopped state, and the mixed dye falls into the funnel. The drive motor starts, driving the vertical guide tube to rotate, so that the dye is evenly distributed in the waste paper pulp, thus completing the dyeing operation of the waste paper pulp.

[0017] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 This paper shows a schematic diagram of the overall top-axis structure of the waste paper pulp decolorization and color adjustment device of this application; Figure 2 This is a schematic diagram of the overall bottom axis structure of the waste paper pulp decolorization and color adjustment device of this application; Figure 3 A schematic diagram of the axial structure of the processing tank of the waste paper pulp decolorization and color adjustment device of this application is shown; Figure 4 A schematic diagram of the connection structure of the top support frame, vertical rotating shaft, planetary rotating frame, vertical guide tube, and retaining rotating frame of the waste paper pulp decolorization and color adjustment device of this application is shown. Figure 5 A schematic diagram of the vertical rotating shaft side structure of the waste paper pulp decolorization and color adjustment device of this application is shown; Figure 6 A schematic diagram of the planetary rotating frame shaft side structure of the waste paper pulp decolorization and color adjustment device of this application is shown; Figure 7 A schematic diagram of the vertical guide tube shaft side structure of the waste paper pulp decolorization and color adjustment device of this application is shown; Figure 8 A schematic diagram of the isothermal structure of the waste paper pulp decolorization and toning apparatus of this application is shown; Figure 9A schematic diagram of the disassembled structure of the color mixing device of the waste paper pulp decolorization and color mixing apparatus of this application is shown.

[0021] Figure label: 1. Processing tank; 101. Gear ring; 2. Top support frame; 3. Vertical shaft; 301. Large pulley; 302. Large impeller; 303. Sun gear; 4. Drive motor; 41. Small pulley; 5. Synchronous belt; 6. Planetary rotor; 7. Vertical guide tube; 701. Funnel; 702. Small impeller; 703. Planetary gear; 8. Maintain the rotating frame; 9. Toner; 91. Hopper; 92. Feed solenoid valve; 93. Mixing tank; 94. Discharge solenoid valve. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please refer to Figures 1 to 9 Example 1: This invention proposes a waste paper pulp decolorization and color adjustment device, comprising: a processing tank 1, a top support frame 2, a vertical rotating shaft 3, a drive motor 4, a synchronous belt 5, a planetary rotating frame 6, vertical guide tubes 7, a retaining rotating frame 8, and a color adjuster 9; the top support frame 2 is fixedly installed on the top of the processing tank 1, and the vertical rotating shaft 3 is connected inside the processing tank 1; the drive motor 4 is fixedly installed outside the processing tank 1, and the synchronous belt 5 is connected to the top of the drive motor 4, which is connected to the top of the vertical rotating shaft 3; the planetary rotating frame 6 is connected to the outside of the vertical rotating shaft 3, and the planetary rotating frame 6 is located inside the top of the processing tank 1; two vertical guide tubes 7 are connected inside the planetary rotating frame 6, and the vertical guide tubes 7 are located inside the processing tank 1; the retaining rotating frame 8 is connected to the outside of the vertical rotating shaft 3, and the retaining rotating frame 8 is connected to the two vertical guide tubes 7; the color adjuster 9 is installed inside the top of the top support frame 2.

[0024] In this embodiment, the bottom of the vertical rotating shaft 3 is rotatably connected to the processing tank 1, the top of the vertical rotating shaft 3 is rotatably connected to the top support frame 2, a large impeller 302 is provided near the bottom of the vertical rotating shaft 3, a large pulley 301 is provided at the top of the vertical rotating shaft 3, a small pulley 41 is provided at the top of the drive motor 4, and the small pulley 41 is connected to the large pulley 301 through a synchronous belt 5. Using the above technical solution, the drive motor 4 drives the vertical shaft 3 to rotate by the transmission action of the synchronous belt 5. The large impeller 302 equipped on the vertical shaft 3 rotates accordingly, and carries out efficient mixing and stirring of the waste paper pulp in the treatment tank 1. This effectively accelerates the flow speed of the waste paper pulp in the tank, and promotes the waste paper pulp and bleaching agent to fully contact and mix, thereby achieving the ideal bleaching and decolorization effect of the waste paper pulp.

[0025] In this embodiment, the vertical rotating shaft 3 is rotatably connected to the planetary rotating frame 6. A sun gear 303 is provided on the outside of the vertical rotating shaft 3. The sun gear 303 is located inside the planetary rotating frame 6. The vertical rotating shaft 3 is rotatably connected to the holding rotating frame 8. The vertical guide tube 7 is rotatably connected to the planetary rotating frame 6. The holding rotating frame 8 is rotatably connected to the vertical guide tube 7. A funnel 701 is provided at the top of the vertical guide tube 7. A small impeller 702 is provided at the bottom of the vertical guide tube 7. A planetary gear 703 is provided near the top of the vertical guide tube 7. The planetary gear 703 is located inside the planetary rotating frame 6. A gear ring 101 is provided at the top of the processing tank 1. The gear ring 101 is engaged with two planetary gears 703. The planetary gears 703 are engaged with the sun gear 303. The planetary gear 703 is located between the gear ring 101 and the sun gear 303. Using the above technical solution, the bleaching agent required for decolorizing waste paper pulp is slowly poured into the funnel 701. As the vertical shaft 3 begins to rotate, the sun gear 303 installed on the vertical shaft 3 rotates synchronously, thereby driving the planetary gear 703 meshing with it to start running. Since the planetary gear 703 is meshed with the gear ring 101 fixed on the treatment tank 1, under the drive of the planetary gear 703, the vertical guide tube 7 rotates on its own axis and revolves around the vertical shaft 3. The bleaching agent discharged from the bottom of the vertical guide tube 7 is evenly distributed in a circular pattern. The small impeller 702 running on the vertical guide tube 7 plays a full role, accelerating the diffusion speed of the bleaching agent to the surrounding area. Under the synergistic effect of rotation, revolution and small impeller 702, the bleaching agent can be fully and evenly diffused to all parts of the waste paper pulp in a short time, effectively improving the bleaching and decolorizing effect of the waste paper pulp.

[0026] In Example 2, based on Example 1, the color mixing device 9 consists of a hopper 91, a feed solenoid valve 92, a mixing tank 93, and a discharge solenoid valve 94. The mixing tank 93 is fixedly connected inside the top support frame 2. The feed solenoid valve 92, the mixing tank 93, and the discharge solenoid valve 94 are connected to a computer via a PLC system. There are three hoppers 91. The bottom of the hopper 91 is connected to the feed solenoid valve 92. The three feed solenoid valves 92 are connected to the top of the mixing tank 93. The discharge solenoid valve 94 is connected to the bottom of the mixing tank 93 and is located above the funnel 701. Using the above technical solution, after the waste paper pulp has completed the bleaching and decolorization process, the operator selects the desired color on the computer. The computer then uses the PLC system to precisely control the opening duration of the three feed solenoid valves 92, thereby accurately controlling the amount added and ensuring that the dye in the hopper 91 can be injected into the mixing tank 93 as needed. The computer then uses the PLC system to drive the mixing structure in the mixing tank 93 to operate, promoting thorough mixing of the dye and thus preparing the required color dye. After the dye preparation is completed, the computer uses the PLC system to control the discharge solenoid valve 94 to open. At this time, the drive motor 4 is in a stopped state, and the dye falls into the funnel 701. The drive motor 4 starts, driving the vertical guide tube 7 to rotate, so that the dye is evenly distributed in the waste paper pulp, completing the dyeing operation of the waste paper pulp.

[0027] The working principle of this embodiment is as follows: Waste paper pulp is transported into the processing tank 1. The drive motor 4, through the transmission action of the synchronous belt 5, drives the vertical shaft 3 to rotate. The large impeller 302 equipped on the vertical shaft 3 rotates accordingly, carrying out efficient mixing and stirring of the waste paper pulp in the processing tank 1. This effectively accelerates the flow rate of the waste paper pulp in the tank, ensuring that the waste paper pulp and bleaching agent can fully contact and mix, thereby achieving the ideal bleaching and decolorization effect of the waste paper pulp. The bleaching agent required for decolorizing the waste paper pulp is slowly poured into the funnel 701. As the vertical shaft 3 begins to rotate, the sun gear 303 installed on the vertical shaft 3 rotates synchronously, thereby driving the planetary gears 703 that mesh with it to start rotating. Since the planetary gears 703 are meshed with the gear ring 101 fixed on the processing tank 1, the planetary gears 703 rotate. Driven by axis 3, the vertical guide tube 7 rotates on its own axis and revolves around the vertical axis 3. The bleaching agent discharged from the bottom of the vertical guide tube 7 is then evenly distributed in a circular pattern. The small impeller 702 rotating on the vertical guide tube 7 plays a full role in accelerating the diffusion speed of the bleaching agent. Under the synergistic effect of rotation, revolution, and the small impeller 702, the bleaching agent can be fully and evenly diffused to all parts of the waste paper pulp in a short time, effectively improving the bleaching and decolorization effect of the waste paper pulp. After the waste paper pulp completes the bleaching and decolorization process, the operator selects the desired color on the computer. The computer then uses the PLC system to precisely control the opening time of the three feed solenoid valves 92, thereby accurately controlling the amount added and ensuring that the dye in the hopper 91 can be injected into the mixing tank 93 as needed. The computer then uses the PLC system to further control the amount added. The system drives the mixing structure in the mixing tank 93 to operate, so as to fully mix the dye and thus prepare the dye that meets the requirements. After the dye preparation is completed, the computer controls the discharge solenoid valve 94 to open through the PLC system. At this time, the drive motor 4 is in a stopped state, and the dye falls into the funnel 701. The drive motor 4 starts and drives the vertical guide tube 7 to operate, so that the dye is evenly distributed in the waste paper pulp, and the dyeing operation of the waste paper pulp is completed.

[0028] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0029] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0030] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A waste paper pulp decolorization and color adjustment device, comprising: The treatment tank (1), top support frame (2), vertical rotating shaft (3), drive motor (4), synchronous belt (5), planetary rotating frame (6), vertical guide tube (7), retaining rotating frame (8), and color adjuster (9) are characterized in that: a top support frame (2) is fixedly installed on the top of the treatment tank (1), a vertical rotating shaft (3) is connected inside the treatment tank (1), and the vertical rotating shaft (3) is connected to the top support frame (2); a drive motor (4) is fixedly installed on the outside of the treatment tank (1), and a synchronous belt (5) is connected to the top of the drive motor (4). The step belt (5) and the timing belt (5) are connected to the top of the vertical rotating shaft (3); the planetary rotating frame (6) is connected to the outside of the vertical rotating shaft (3), the planetary rotating frame (6) is located inside the top of the processing tank (1), and two vertical guide tubes (7) are connected inside the planetary rotating frame (6), the vertical guide tubes (7) are located inside the processing tank (1); the retaining rotating frame (8) is connected to the outside of the vertical rotating shaft (3), the retaining rotating frame (8) is connected to the two vertical guide tubes (7); a color adjuster (9) is installed inside the top of the top support frame (2).

2. The waste paper pulp decolorization and color adjustment device according to claim 1, characterized in that, The bottom of the vertical rotating shaft (3) is rotatably connected to the processing tank (1), the top of the vertical rotating shaft (3) is rotatably connected to the top support frame (2), and a large impeller (302) is provided near the bottom of the vertical rotating shaft (3).

3. The waste paper pulp decolorization and color adjustment device according to claim 1, characterized in that, The top of the vertical rotating shaft (3) is provided with a large pulley (301), and the top of the drive motor (4) is provided with a small pulley (41). The small pulley (41) is connected to the large pulley (301) through a synchronous belt (5).

4. The waste paper pulp decolorization and color adjustment device according to claim 1, characterized in that, The vertical rotating shaft (3) is rotatably connected to the planetary rotating frame (6). A sun gear (303) is provided on the outside of the vertical rotating shaft (3). The sun gear (303) is located inside the planetary rotating frame (6). The vertical rotating shaft (3) is rotatably connected to the retaining rotating frame (8).

5. The waste paper pulp decolorization and color adjustment device according to claim 1, characterized in that, The vertical guide tube (7) is rotatably connected to the planetary rotating frame (6), and the rotating frame (8) is rotatably connected to the vertical guide tube (7). A funnel (701) is provided at the top of the vertical guide tube (7), and a small impeller (702) is provided at the bottom of the vertical guide tube (7).

6. The waste paper pulp decolorization and color adjustment device according to claim 5, characterized in that, The vertical guide tube (7) is provided with a planetary gear (703) near the top. The planetary gear (703) is located inside the planetary rotating frame (6). The top of the processing tank (1) is provided with a gear ring (101).

7. The waste paper pulp decolorization and color adjustment device according to claim 6, characterized in that, The gear ring (101) is driven to mesh with two planet gears (703), and the planet gears (703) are driven to mesh with the sun gear (303). The planet gears (703) are located between the gear ring (101) and the sun gear (303).

8. The waste paper pulp decolorization and color adjustment device according to claim 5, characterized in that, The color mixing device (9) consists of a hopper (91), a feed solenoid valve (92), a mixing tank (93), and a discharge solenoid valve (94).

9. The waste paper pulp decolorization and color adjustment device according to claim 8, characterized in that, The mixing tank (93) is fixedly connected inside the top support frame (2), and the feed solenoid valve (92), the mixing tank (93) and the discharge solenoid valve (94) are connected to the computer through the PLC system.

10. The waste paper pulp decolorization and color adjustment device according to claim 8, characterized in that, The hopper (91) is provided in three parts. The bottom of the hopper (91) is connected to the feed solenoid valve (92). The three feed solenoid valves (92) are connected to the top of the mixing tank (93). The discharge solenoid valve (94) is connected to the bottom of the mixing tank (93). The discharge solenoid valve (94) is located above the funnel (701).

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