Conveying and defibering system for small-size paper scraps

Abstract

A conveying and defibering system for small-size paper scraps relates to the technical field of conveying systems and comprises a paper scrap collecting tank located on one side of a die-cutting machine, the paper scrap collecting tank is connected with a paper scrap storage tank through an air conveying pipeline, the paper scrap storage tank is connected with a paper scrap metering tank through a pipe chain conveyor, and the paper scrap metering tank is connected with a pulper through a metering screw. The pulper is connected with a disc mill fluffer, and the disc mill fluffer is connected with a pulp tower. The problems that in the prior art, due to the fact that the distance between a die-cutting machine and a paper pulp workshop is long, paper scrap pollution is likely to be caused in the existing paper scrap ton bag storage and transportation process, and due to the fact that the existing pulping technology is limited, long-time dissolution and pulping need to be conducted in a pulper, and waste of paper scraps is caused are solved. And the recycling rate of the paper scraps is very low.

Description

Technical Field

[0001] The invention relates to the technical field of conveying systems, and in particular to a conveying and defragmenting system for small-sized paper scraps. Background Art

[0002] During the papermaking die-cutting process, a large amount of paper scraps with extremely small sizes are generated, which are recycled into the pulping system of the paper machine. The paper scraps generated at this stage are first stored in ton bags, and after a certain number of ton bags are collected, they are transported to the pulping workshop by forklifts.

[0003] The prior art discloses a patent with a publication level of CN108556418A. The solution includes a transmission cylinder, a compression box and a conveyor belt. The conveyor belt is located at the lower end of the compression box, and the conveyor belt is installed on the upper end of the base through a bracket. The transmission cylinder is obliquely arranged on the left side of the compression box. The lower left side of the transmission cylinder is connected to an adsorption port, and the right side of the transmission cylinder is connected to a discharge port. A drive motor A is installed on the right side of the adsorption port. A transmission shaft runs through the transmission cylinder, and the transmission shaft is connected to the drive motor A in a transmission manner. A vacuum pump is installed on the upper end of the adsorption port. By setting up a compression box, after using the transmission cylinder to transfer waste paper scraps to the compression box, the compression box can be used to simply compress the waste paper scraps into blocks, which is convenient for using the conveyor belt to transfer the waste paper scraps more concentratedly later, preventing the waste paper scraps from falling on all sides, and reducing the secondary collection and processing of the waste paper scraps. It is more practical and suitable for wide promotion and use.

[0004] The existing devices including the above patents gradually exposed the shortcomings of the existing technology as they were used, mainly in the following aspects:

[0005] First, since the die-cutting machine is far away from the pulp workshop, the existing paper scraps ton bags are easily contaminated by paper scraps during storage and transportation.

[0006] Second, the existing pulping technology is limited, which requires a long time of dissolving and pulping in the pulper, and the recycling rate of paper scraps is very low.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0008] In view of the defects in the prior art, the present invention provides a conveying and defragmenting system for small-sized paper scraps, which is used to solve the problem that the paper scraps are easily contaminated during the storage and transportation of the existing paper scraps ton bags due to the long distance between the die-cutting machine and the pulping workshop in the traditional technology, and the problem that the recycling rate of paper scraps is very low due to the limitation of the existing pulping technology, which leads to the need for long-term dissolution and pulping in the pulper.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A conveying and defragmenting system for small-sized paper scraps comprises a paper scrap collecting trough located on one side of a die-cutting machine, wherein the paper scrap collecting trough is connected to a paper scrap storage trough via an air conveying duct, wherein the paper scrap storage trough is connected to a paper scrap metering trough via a pipe chain conveyor, wherein the paper scrap metering trough is connected to a pulper via a metering screw, wherein the pulper is connected to a disc refiner and defragmenter, and wherein the disc refiner and defragmenter is connected to a pulp tower.

[0011] As an optimized solution, a paper scrap collector is further provided between the tail end of the air delivery duct and the paper scrap storage tank.

[0012] As an optimized solution, a collecting trough weighing module is provided on the paper scrap collecting trough, and the weighing range of the collecting trough weighing module is 0.02-1.5 tons.

[0013] As an optimized solution, when the storage capacity of the paper scrap collection tank reaches 1 ton, the air delivery duct is opened.

[0014] As an optimized solution, the air volume of the air delivery duct is 2m 3 / h.

[0015] As an optimized solution, the air delivery duct is interlocked with the pipe chain conveyor.

[0016] As an optimized solution, when the storage capacity of the paper scrap collecting trough is higher than 1.5 tons, the tube chain conveyor stops.

[0017] As an optimized solution, when the pulper is started, the metering screw conveys paper scraps to the pulper, 1.3 tons each time, and 6.5-8.5 tons of clean water are added to the pulper to ensure that the pulper concentration is 15-20%, and the pulper is fully stirred for 30-50 minutes.

[0018] As an optimized solution, a slurry pump is provided on the pipeline between the disc refiner and the slurry tower.

[0019] As an optimized solution, a metering trough weighing module is provided on the paper scrap metering trough.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The invention has been applied in the actual production process. The application of the invention reduces the input of manpower. The entire conveying system does not require excessive human intervention, and also ensures the safety of the operating environment.

[0022] In terms of materials, it avoids waste caused by material transportation, and also prevents materials from being contaminated during storage;

[0023] The dissolution process of paper shredder pulp reduces the running time of the pulper, reduces energy consumption, and increases the recycling rate of paper shredder fiber by 40%. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] In the figure: 1-paper scrap collecting trough, 2-air delivery duct, 3-paper scrap storage trough, 4-paper scrap collector, 5-tube chain conveyor, 6-paper scrap metering trough, 7-metering screw, 8-pulper, 9-disc refiner, 10-pulp tower, 11-collecting trough weighing module, 12-metering trough weighing module. DETAILED DESCRIPTION

[0027] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0028] like Figure 1 As shown, the conveying and defragmenting system for small-sized paper scraps includes a paper scrap collecting trough 1 located on one side of the die-cutting machine, the paper scrap collecting trough 1 is connected to a paper scrap storage trough 3 through an air conveying duct 2, the paper scrap storage trough 3 is connected to a paper scrap metering trough 6 through a tube chain conveyor 5, the paper scrap metering trough 6 is connected to a pulper 8 through a metering screw 7, the pulper 8 is connected to a disc refiner defragmenter 9, and the disc refiner defragmenter 9 is connected to a pulp tower 10.

[0029] A paper scrap collector 4 is also provided between the tail end of the air delivery duct 2 and the paper scrap storage tank 3 .

[0030] The paper scrap collecting trough 1 is provided with a collecting trough weighing module 11, and the weighing range of the collecting trough weighing module 11 is 0.02-1.5 tons.

[0031] When the storage capacity of the paper scraps collecting tank 1 reaches 1 ton, the air delivery duct 2 is opened.

[0032] The air volume of air delivery duct 2 is 2m3 / h.

[0033] The air delivery pipeline 2 is interlocked with the pipe chain conveyor 5 .

[0034] When the storage capacity of the paper scrap collecting tank 1 is higher than 1.5 tons, the tube chain conveyor 5 stops.

[0035] When the pulper 8 is started, the metering screw 7 conveys the paper scraps to the pulper 8, conveying 1.3 tons each time, and at the same time, 6.5-8.5 tons of clean water are added to the pulper 8 to ensure that the concentration of the pulper 8 is 15-20%, and the pulper 8 is fully stirred for 30-50 minutes.

[0036] A slurry pump is provided on the pipeline between the disc mill 9 and the slurry tower 10.

[0037] A paper scrap metering trough 6 is provided with a metering trough weighing module 12 .

[0038] The invention has been applied in the actual production process. The application of the invention reduces the input of manpower. The entire conveying system does not require excessive human intervention, and also ensures the safety of the operating environment.

[0039] In terms of materials, it avoids waste caused by material transportation, and also prevents materials from being contaminated during storage;

[0040] In the process of dissolving the paper scrap pulp, the operation time of the pulper 8 is reduced, the energy consumption is reduced, and the recycling rate of paper scrap fibers is increased by 40%.

[0041] The specific operation of each step in the present invention is:

[0042] 1. Paper scraps conveying

[0043] The collected paper scraps are manually sent into the collection tank. When the weight reaches 1 ton, the weighing module transmits a weight satisfaction signal. After receiving the signal, the conveying duct fan starts automatically and transports the paper scraps to the paper scrap storage tank. The dryness of the paper scraps is 80%.

[0044] When the weight of the scraps in the scrap metering tank is less than 0.02 tons, the weighing module sends a weight shortage signal, and the tube chain conveyor automatically starts to transport the scraps to the scrap metering tank. When the weight of the scraps is higher than 1.5 tons, the weighing module sends a weight satisfaction signal, and the tube chain conveyor automatically stops; the dryness of the scraps is 75%

[0045] 2. Pulper

[0046] When the pulper is started, the conveying screw at the bottom of the paper scrap metering tank is started at the same time to convey the paper scraps to the pulper, 1.3 tons each time. At the same time, 4.2 tons of clean water is added to the pulper to ensure that the pulper concentration is 18%. The pulper is fully stirred for 30-50 minutes to allow the paper scraps to be fully immersed and dissolved.

[0047] The concentration is 18% and the beating degree is 23. The original slurry of SR

[0048] 3. Deflaking machine

[0049] The slurry passes through the disc mill at a speed of 3m3 The slurry is diluted and dispersed at a rate of 1000 g / h to achieve full dissolution of the slurry, and a finished slurry with a concentration of 10% and a beating degree of 35 SR is obtained.

[0050] 4. Pulp tower

[0051] The de-stressed pulp is transported to the pulp tower through the pulp pump to ensure that there is enough pulp during paper machine production. When the pulp pool is insufficient, the pulp is pumped in accordance with 40m 3 / h speed to the pulp mixing tank to ensure that the pulp in the pulp mixing tank meets the following requirements: wood pulp: paper scrap pulp = 3:1.

[0052] The working process of this device is:

[0053] The first step is to pour the paper scraps produced by the die-cutting machine into the paper scrap collection tank on one side;

[0054] Step 2: When the weight of the paper scrap collection tank reaches 1 ton, the air delivery system of the equipment is automatically started, and the duct fan generates 2m 3 / h air volume, the paper scraps in the stainless steel paper scrap collection tank are transported to the paper scrap collector at the end of the air duct through the air duct driven by the wind. The paper scrap collector intercepts the paper scraps and drops them into the paper scrap storage tank, and the air is discharged to the outside;

[0055] The third step is to design a weighing module for the paper scrap metering trough with a metering range of 0.02-1.5 tons, and to interlock with the tube chain conveyor. When the weight of the paper scraps is less than 0.02 tons, the tube chain conveyor automatically starts and transports the paper scraps to the paper scrap metering trough. When the weight of the paper scraps is more than 1.5 tons, the tube chain conveyor automatically stops.

[0056] Step 4: When the pulper is started, the conveying screw at the bottom of the paper scrap metering tank is started at the same time to convey the paper scraps to the pulper, 1.3 tons each time, and 6.5-8.5 tons of clean water are added to the pulper to ensure that the pulper concentration is 15-20%. The pulper is fully stirred for 30-50 minutes to fully soak and dissolve the paper scraps;

[0057] Step 5: Discharge the pulp after it is fully soaked and dissolved;

[0058] Step 6: After the high-consistency pulper is unloaded, the pulp is initially deflaked by a disc refiner to achieve full dissolution;

[0059] Step 7. The pulp deflaked by the disc refiner is transported to the pulp tower through a pulp pump. In addition to ensuring that there is enough pulp during paper machine production, it is also soaked and swelled for the second time to facilitate subsequent disc refiner dissolution and improvement of beating degree.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A conveying and defusing system for small-sized paper scraps, characterized by: The invention comprises a paper scrap collection trough (1) located at one side of a die-cutting machine, wherein the paper scrap collection trough (1) is connected to a paper scrap storage trough (3) via an air delivery duct (2), the paper scrap storage trough (3) is connected to a paper scrap metering trough (6) via a tube chain conveyor (5), the paper scrap metering trough (6) is connected to a pulper (8) via a metering screw (7), the pulper (8) is connected to a disc refiner (9), and the disc refiner (9) is connected to a pulp tower (10).

2. The small-sized paper scrap conveying and defusing system according to claim 1 is characterized in that: A paper scrap collector (4) is also provided between the tail end of the air delivery duct (2) and the paper scrap storage tank (3).

3. The small-sized paper scrap conveying and defusing system according to claim 1 is characterized in that: The paper scrap collecting trough (1) is provided with a collecting trough weighing module (11), and the weighing range of the collecting trough weighing module (11) is 0.02-1.5 tons.

4. The small-sized paper scrap conveying and defusing system according to claim 3 is characterized in that: When the storage capacity of the paper scrap collection tank (1) reaches 1 ton, the air delivery duct (2) is opened.

5. The small-sized paper scrap conveying and defusing system according to claim 1, characterized in that: The air volume of the air delivery duct (2) is 2m3 / h.

6. The small-sized paper scrap conveying and defusing system according to claim 1, characterized in that: The air delivery pipeline (2) is interlocked with the pipe chain conveyor (5).

7. The small-sized paper scrap conveying and defusing system according to claim 1, characterized in that: When the storage capacity of the paper scrap collecting tank (1) is higher than 1.5 tons, the tube chain conveyor (5) stops.

8. The small-sized paper scrap conveying and defusing system according to claim 1, characterized in that: When the pulper (8) is started, the metering screw (7) conveys paper scraps to the pulper (8), conveying 1.3 tons each time, and at the same time, 6.5-8.5 tons of clean water are added to the pulper (8) to ensure that the concentration of the pulper (8) is 15-20%, and the pulper (8) is fully stirred for 30-50 minutes.

9. The small-sized paper scrap conveying and defusing system according to claim 1, characterized in that: A slurry pump is provided on the pipeline between the disc refiner (9) and the slurry tower (10).

10. The small-sized paper scrap conveying and defusing system according to claim 1, characterized in that: The paper scrap metering trough (6) is provided with a metering trough weighing module (12).

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