A processing system for short fiber in-line to a medium fiber system

Abstract

This utility model relates to a processing system for short fiber to medium fiber system. The raw materials are fed into a pulp pretreatment device via a chain conveyor for crushing and deslagging, then sent to a primary grading screen for screening. The screened short fiber pulp is sent to a short fiber low-consistency deslagging device for deslagging, while other pulps are sent to a secondary grading screen. After deslagging by the short fiber low-consistency deslagging device, the short fiber pulp is concentrated by a short fiber multi-disc thickener, and then sent to a short fiber storage tower. The short fiber pulp in the storage tower is sent to a medium fiber low-consistency deslagging device for deslagging, and then undergoes thermal dispersion treatment. This effectively removes adhesives and small white pulp clumps from the short fiber pulp, improving the impurity removal rate and reducing the impact on paper quality.

Description

Technical Field

[0001] This application relates to the field of papermaking technology, specifically to a processing system for short fibers connected in series to a medium fiber system. Background Technology

[0002] In existing short fiber processing technologies, short fibers are transported from the pulp tower to the paper machine core and bottom mixing tank via a pulping pump. Typically, waste paper (grades A, B, C, and D) undergoes disintegration, slag removal, and grading to produce three different types of pulp: long fiber, medium fiber, and short fiber. Short fiber accounts for over 60% of this pulp, but it also contains a significant amount of adhesive particles and incompletely dispersed small white clumps, leading to the following problems with short fiber pulp:

[0003] a. Short fiber adhesives and small white spots affect the quality of the paper surface and cannot be directly added to the surface layer for use;

[0004] b. To improve quality, it is necessary to switch to using nationally designated waste grade A as raw material, but this will increase the cost of raw materials;

[0005] c. Existing processes suffer from uneven fiber distribution, making it impossible to achieve synergistic effects of different fiber properties through physical treatment. Utility Model Content

[0006] In view of the above problems, this application provides a processing system for short fibers connected in series to a medium fiber system, which solves the problem that the adhesives and white spots in the pulp obtained from the crushing, slag removal and classification of raw materials affect the paper surface quality and cannot be directly added to the surface layer for use.

[0007] To achieve the above objectives, the inventors provide a processing system for connecting short fibers to a medium fiber system, comprising:

[0008] A chain conveyor for conveying slurry to a slurry pretreatment device;

[0009] A slurry pretreatment device, wherein the inlet of the slurry pretreatment device is connected to a chain conveyor;

[0010] A primary grading screen device, wherein the inlet of the primary grading screen device is connected to the outlet of the slurry pretreatment device;

[0011] A short fiber low concentration slag remover, wherein the feed inlet of the short fiber low concentration slag remover is connected to the first discharge outlet of the primary grading screen device;

[0012] A short fiber multi-disc thickener, wherein the feed inlet of the short fiber multi-disc thickener is connected to the discharge outlet of the short fiber low concentration slag remover;

[0013] A short fiber slurry storage tower, the inlet of which is connected to the outlet of the short fiber multi-disc thickener;

[0014] A two-stage grading screen device, wherein the inlet of the two-stage grading screen device is connected to the second outlet of the first-stage grading screen device;

[0015] Medium fiber low concentration slag remover, wherein the inlet of the medium fiber low concentration slag remover is connected to the first outlet of the secondary grading screen device and the outlet of the short fiber storage tower;

[0016] A thermal dispersion device, wherein the inlet of the thermal dispersion device is connected to the outlet of the medium fiber low concentration slag remover;

[0017] Medium fiber slurry storage tower, wherein the inlet of the medium fiber slurry storage tower is connected to the outlet of the thermal dispersion device.

[0018] In some embodiments, the secondary grading screen device is connected to the feed inlet of the medium fiber low concentration slag remover via a first pipe;

[0019] The outlet of the short fiber slurry storage tower is connected to the first pipe in front of the inlet of the medium fiber low concentration slag remover via a second pipe.

[0020] In some embodiments, it also includes:

[0021] A flow regulating device is installed on the slurry delivery pipeline between the short fiber slurry storage tower and the medium fiber low concentration slag remover.

[0022] In some embodiments, the flow regulating device includes:

[0023] A flow meter is installed on the slurry delivery pipeline between the short fiber slurry storage tower and the medium fiber low concentration slag remover.

[0024] An automatic regulating valve is installed on the slurry delivery pipeline between the short fiber slurry storage tower and the medium fiber low concentration slag remover, and the automatic regulating valve is connected to the flow meter.

[0025] In some embodiments, the thermal dispersion device includes:

[0026] A pressing screw, the inlet of which is connected to the outlet of the medium-fiber low-concentration slag remover;

[0027] A feed plug screw, wherein the feed inlet of the feed plug screw is connected to the discharge outlet of the pressing screw;

[0028] A crushing spiral, wherein the feed inlet of the crushing spiral is connected to the discharge outlet of the feed plug spiral;

[0029] A heating spiral, wherein the feed inlet of the heating spiral is connected to the discharge outlet of the crushing spiral;

[0030] A feeding screw, wherein the inlet of the feeding screw is connected to the outlet of the heating screw;

[0031] A thermal disperser, wherein the feed inlet of the thermal disperser is connected to the discharge outlet of the heating screw, and the discharge outlet of the thermal disperser is connected to the medium fiber slurry storage tower.

[0032] In some embodiments, the heating spiral is a steam-heating spiral.

[0033] In some embodiments, it also includes:

[0034] A medium-fiber lightweight slag remover is disposed between the medium-fiber low-concentration slag remover and the thermal dispersion device.

[0035] In some embodiments, the slurry pretreatment apparatus includes:

[0036] A pulper, wherein the feed inlet of the pulper is connected to the chain conveyor;

[0037] A discharge tower, wherein the inlet of the discharge tower is connected to the outlet of the pulper;

[0038] A coarse screening device, wherein the inlet of the coarse screening device is connected to the outlet of the unloading tower, and the outlet of the coarse screening device is connected to the inlet of the primary grading screen device.

[0039] Unlike existing technologies, the above-mentioned technical solution involves feeding raw materials into a pulp pretreatment device via a chain conveyor for crushing and deslagging, followed by screening in a primary grading screen. The screened short-fiber pulp is then sent to a short-fiber low-consistency deslagging device for deslagging, while other pulps are sent to a secondary grading screen. After deslagging in the short-fiber low-consistency deslagging device, the short-fiber pulp is concentrated in a short-fiber multi-disc thickener before being sent to a short-fiber storage tower. The short-fiber pulp in the storage tower is then sent to a medium-fiber low-consistency deslagging device for deslagging, followed by thermal dispersion treatment. This effectively removes adhesives and small white pulp clumps from the short-fiber pulp, improving the impurity removal rate and reducing the impact on paper quality.

[0040] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0041] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0042] In the accompanying drawings of the instruction manual:

[0043] Figure 1 This is a schematic diagram of a processing system for connecting short fibers to medium fibers in a series, as described in a specific embodiment.

[0044] Figure 2 This is a schematic diagram of another structure of the processing system for connecting short fibers to medium fibers as described in the specific implementation;

[0045] Figure 3 This is a schematic diagram of a structure of the thermal dispersion device described in a specific embodiment;

[0046] Figure 4 This is a schematic diagram of another structure of the processing system for connecting short fibers to medium fibers as described in the specific implementation;

[0047] Figure 5 This is a schematic diagram of one embodiment of the slurry pretreatment device.

[0048] The reference numerals used in the above figures are explained as follows:

[0049] 110. Chain conveyor; 120. Slurry pretreatment device; 121. Pulper; 122. Discharge tower; 123. Coarse screening device; 130. Primary grading screen device; 140. Short fiber low-concentration slag remover; 150. Short fiber multi-disc thickener; 160. Short fiber slurry storage tower; 170. Secondary grading screen device; 180. Medium fiber low-concentration slag remover; 190. Thermal dispersion device; 1100. Medium fiber slurry storage tower.

[0050] 210. Flow regulating device; 211. Flow meter; 212. Automatic regulating valve;

[0051] 310. Pressing screw; 320. Feed plug screw; 330. Crushing screw; 340. Heating screw; 350. Feeding screw; 360. Thermal disperser.

[0052] 410. Medium-fiber lightweight slag remover. Detailed Implementation

[0053] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0054] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0055] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0056] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0057] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0058] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0059] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0060] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0061] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0062] Please see Figure 1 This embodiment provides a processing system for connecting short fibers in series to a medium fiber system, including:

[0063] Chain conveyor 110, the chain conveyor 110 is used to transport slurry to slurry pretreatment device 120;

[0064] The slurry pretreatment device 120 has its inlet connected to the chain conveyor 110.

[0065] A primary grading screen device 130, the inlet of which is connected to the outlet of the slurry pretreatment device 120.

[0066] A short fiber low concentration slag remover 140, wherein the feed inlet of the short fiber low concentration slag remover 140 is connected to the first discharge outlet of the primary grading screen device 130.

[0067] A short fiber multi-disc thickener 150, wherein the feed inlet of the short fiber multi-disc thickener 150 is connected to the discharge outlet of the short fiber low concentration slag remover 140.

[0068] The short fiber storage tower 160 has its inlet connected to the outlet of the short fiber multi-disc thickener 150.

[0069] A secondary grading screen device 170, wherein the inlet of the secondary grading screen device 170 is connected to the second outlet of the primary grading screen device 130;

[0070] Medium fiber low concentration slag remover 180, the inlet of which is connected to the first outlet of the secondary grading screen device 170 and the outlet of the short fiber storage tower 160.

[0071] A thermal dispersion device 190, the inlet of which is connected to the outlet of the medium fiber low concentration slag remover 180.

[0072] Medium fiber slurry storage tower 1100, the inlet of which is connected to the outlet of the thermal dispersion device 190.

[0073] After the raw materials are fed into the pulp pretreatment device 120 via the chain conveyor 110 for crushing and deslagging, they are sent to the primary grading screen device 130 for screening. The screened short fiber pulp is sent to the short fiber low-consistency deslagging device 140 for deslagging, while the other pulps are sent to the secondary grading screen device 170 for screening to separate medium fiber pulp and long fiber pulp. After the short fiber pulp is deslagged by the short fiber low-consistency deslagging device 140, it is then concentrated by the short fiber multi-disc thickener 150 and then sent to the short fiber storage tower 160. The short fiber pulp in the short fiber storage tower 160 is sent to the medium fiber low-consistency deslagging device 180 for deslagging, and then undergoes thermal dispersion treatment by the thermal dispersion device 190. This effectively removes the adhesives and small white pulp clumps in the short fiber pulp, improves the impurity removal rate, and reduces the impact on paper quality.

[0074] In some embodiments, the secondary grading screen device 170 is connected to the feed inlet of the medium fiber low concentration slag remover 180 via a first pipe;

[0075] The outlet of the short fiber slurry storage tower 160 is connected to the first pipe in front of the inlet of the medium fiber low concentration slag remover 180 via a second pipe.

[0076] A short-fiber slurry storage tower 160 is connected in series to the first pipe via a second pipe through an opening in the first pipe before the inlet of the medium-fiber low-concentration slag remover 180. The short-fiber slurry in the short-fiber slurry storage tower 160 is mixed with the medium-fiber slurry screened by the secondary grading screen device 170 and then sent to the medium-fiber system processing flow. In other embodiments, two inlets can be provided on the medium-fiber low-concentration slag remover 180, with the secondary grading screen device 170 and the short-fiber slurry storage tower 160 connected to the two inlets of the medium-fiber low-concentration slag remover 180 via the first pipe and the second pipe, respectively.

[0077] Please see Figure 2 In some embodiments, it also includes:

[0078] A flow regulating device 210 is installed on the slurry delivery pipeline between the short fiber slurry storage tower 160 and the medium fiber low concentration slag remover 180.

[0079] To control the ratio of short fiber slurry to medium fiber slurry at 1:7-8, a flow regulating device 210 is added to the pipeline conveying slurry between the short fiber slurry storage tower 160 and the medium fiber low-consistency slag remover 180. The flow regulating device 210 adjusts the flow rate of the short fiber slurry into the medium fiber low-consistency slag remover 180, thereby achieving the desired short fiber ratio. The flow regulating device 210 includes:

[0080] Flow meter 211 is installed on the slurry delivery pipeline between the short fiber slurry storage tower 160 and the medium fiber low concentration slag remover 180.

[0081] An automatic regulating valve 212 is installed on the slurry delivery pipeline between the short fiber slurry storage tower 160 and the medium fiber low concentration slag remover 180, and the automatic regulating valve 212 is connected to the flow meter 211.

[0082] Flow meter 211 detects the flow rate of short fiber slurry in the slurry delivery pipeline between short fiber slurry storage tower 160 and medium fiber low-concentration slag remover 180. Automatic regulating valve 212 automatically adjusts the flow rate of short fiber slurry in the slurry delivery pipeline based on the feedback signal from flow meter 211. In other embodiments, the flow rate of short fiber slurry can also be adjusted manually.

[0083] Please see Figure 3 In some embodiments, the thermal dispersion device 190 includes:

[0084] The pressing screw 310, whose inlet is connected to the outlet of the medium-fiber low-concentration slag remover 180, is a device that uses the screw propulsion principle to mechanically dewater materials. It is widely used in industries such as papermaking, environmental protection, food processing, and chemicals. Its core function is to separate free water from the material through the rotation and extrusion of the screw shaft, achieving solid-liquid separation or concentration. The pressing screw 310 is used to dewater the pulp, increasing its concentration.

[0085] The feed plug screw 320 has its inlet connected to the outlet of the pressing screw 310. The feed plug screw 320 is a key piece of equipment in the thermal dispersion system, pulping and solid waste treatment, mainly used for the compression, sealing and conveying of high-concentration slurry, ensuring stable system operation and preventing steam leakage.

[0086] The crushing screw 330 has its inlet connected to the outlet of the feed plug screw 320. The crushing screw 330 is a device that combines screw conveying and mechanical crushing functions, and is mainly used for crushing, conveying and pre-compressing high-concentration slurries.

[0087] Heating spiral 340, the inlet of which is connected to the outlet of crushing spiral 330; heating spiral 340 is an industrial device that integrates conveying, heating and mixing functions, and is used to uniformly heat high-concentration slurry.

[0088] The feeding screw 350 has its inlet connected to the outlet of the heating screw 340. The feeding screw 350 is a mechanical device for precise and continuous material conveying, which can stably convey the material heated by the heating screw 340 to the thermal disperser 360.

[0089] A thermal disperser 360 is provided, with its inlet connected to the outlet of the heating screw 340 and its outlet connected to the medium-fiber pulp storage tower 1100. The thermal disperser 360 disperses impurities (such as adhesives, inks, and hot melts) in waste paper pulp into tiny particles through a triple action of mechanical shearing, friction, and heating. In this embodiment, a disc-type thermal disperser 360 is used; in other embodiments, a roller-type thermal disperser 360 or a single-shaft thermal disperser 360 may also be used.

[0090] Thermal dispersion is a process that uses high-temperature, high-concentration conditions to subject waste paper raw materials to high shearing. Through mechanical friction and inter-fiber friction, residual ink that has not been peeled off the fibers is removed, and large ink particles, adhesives, and other impurities in the pulp are fragmented. Thermal dispersion itself cannot remove impurities (although the white water in the concentration section does carry away some impurities, this is not its primary function). Its purpose is to ensure that the dispersed impurities are better removed in subsequent flotation or washing processes. Even those that cannot be removed are reduced in size, thus minimizing their harm to paper quality and paper machine operation: for example, ink particles smaller than 50µm are invisible to the naked eye and will not cause significant appearance quality problems. Specifically, the thermal dispersion device 190 concentrates the fed pulp through the press screw 310, then feeds it through the feed plug screw 320 to the crushing screw 330 for crushing, then feeds it through the heating screw 340 for heating, and finally feeds it through the feeding screw 350 into the thermal disperser 360 to disperse impurities in the pulp into tiny particles.

[0091] In some embodiments, the heating spiral 340 is a steam-heated spiral 340. A steam-heated spiral 340 is an industrial device that uses steam as a heat source to heat, convey, mix, or dehydrate materials. Through indirect steam heating, it achieves precise temperature control of the material while simultaneously completing conveying or processing. The steam-heated spiral 340 circulates steam through a jacket or the inner cavity of the spiral shaft, transferring heat to the slurry. The spiral blades propel the slurry forward, resulting in uniform heating. The temperature can be controlled by adjusting the steam pressure.

[0092] Please see Figure 4 In some embodiments, it also includes:

[0093] A medium-fiber lightweight impurity remover 410 is disposed between the medium-fiber low-consistency impurity remover 180 and the thermal dispersion device 190. The medium-fiber lightweight impurity remover 410 is a key piece of equipment in the waste paper pulping process, mainly used to remove lightweight impurities from the pulp, such as plastic film, wax, adhesives, and foam particles. Its working principle is based on eddy current centrifugal separation, utilizing the density difference between lightweight impurities and fibers to achieve efficient purification.

[0094] Please see Figure 5 In some embodiments, the slurry pretreatment device 120 includes:

[0095] Pulper 121, the feed inlet of which is connected to the chain conveyor 110;

[0096] The unloading tower 122 has its inlet connected to the outlet of the pulper 121;

[0097] The coarse screening device 123 has its inlet connected to the outlet of the unloading tower 122, and its outlet connected to the inlet of the primary grading screen device 130.

[0098] After the slurry is conveyed to the crusher by the chain conveyor 110, it is fed into the unloading tower 122, then into the coarse screening device 123 to remove large particles of impurities, and then into the primary grading screen device 130 for screening.

[0099] In some embodiments, a processing system for connecting short fibers in series to a medium fiber system is provided, wherein the series structure is as follows: Figure 4As shown, the slurry from the short fiber storage tower 160 is connected in series to the medium fiber system processing flow via a dedicated pipeline. An opening is made in the pipeline before the low-consistency separator in the medium fiber system to mix the two slurries. After processing by the medium fiber system, the mixed fibers yield a slurry with a freeness (SR) in the range of 25-35°. Specifically, through the low-consistency separator and lightweight separator in the medium fiber system, followed by thermal dispersion treatment, adhesives and small white clumps in the short fiber slurry can be effectively removed, improving the impurity removal rate.

[0100] Thermal dispersion is a process in which waste paper raw materials are subjected to high shear under high temperature and high concentration conditions. Through mechanical friction and inter-fiber friction, residual ink that has not been peeled off from the fibers is removed, and large particles of ink, adhesives and other impurities in the pulp are fragmented.

[0101] Thermal dispersion itself cannot remove impurities (although the white water in the concentration section does carry away some impurities, this is not its primary task). Its purpose is to enable the dispersed impurities to be better removed in subsequent flotation or washing processes. Even the parts that cannot be removed will have reduced harm to paper quality and paper machine operation due to their smaller size: for example, ink particles smaller than 50um are invisible to the naked eye and will not cause obvious appearance quality problems.

[0102] The ratio of short fibers to medium fibers is controlled at 1:7 to 8. To achieve this desired short fiber ratio, a flow meter 211 and an automatic regulating valve 212 are added to the short fiber to medium fiber supply pipe. This controls the flow rate of the short fiber pulp, maintaining the pulp concentration at 4.2-4.8%.

[0103] This solution allows for the addition of short fiber pulp to the surface layer; through fiber co-processing, it significantly improves paper quality, increases the yield of Grade A finished paper, reduces the proportion of high-grade waste paper, lowers raw material costs per ton of paper, achieves efficient utilization of low-grade raw materials, saves raw material costs, improves equipment utilization, increases production capacity, reduces dependence on high-grade fibers, and enhances raw material adaptability.

[0104] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A processing system for the concatenation of staple fibers to a medium fiber system, characterized in that, include: A chain conveyor for conveying slurry to a slurry pretreatment device; A slurry pretreatment device, wherein the inlet of the slurry pretreatment device is connected to a chain conveyor; A primary grading screen device, wherein the inlet of the primary grading screen device is connected to the outlet of the slurry pretreatment device; A short fiber low concentration slag remover, wherein the feed inlet of the short fiber low concentration slag remover is connected to the first discharge outlet of the primary grading screen device; A short fiber multi-disc thickener, wherein the feed inlet of the short fiber multi-disc thickener is connected to the discharge outlet of the short fiber low concentration slag remover; A short fiber slurry storage tower, the inlet of which is connected to the outlet of the short fiber multi-disc thickener; A two-stage grading screen device, wherein the inlet of the two-stage grading screen device is connected to the second outlet of the first-stage grading screen device; Medium fiber low concentration slag remover, wherein the inlet of the medium fiber low concentration slag remover is connected to the first outlet of the secondary grading screen device and the outlet of the short fiber storage tower; A thermal dispersion device, wherein the inlet of the thermal dispersion device is connected to the outlet of the medium fiber low concentration slag remover; Medium fiber slurry storage tower, wherein the inlet of the medium fiber slurry storage tower is connected to the outlet of the thermal dispersion device.

2. The processing system for a short fiber to medium fiber system of claim 1, wherein, The secondary grading screen device is connected to the feed inlet of the medium fiber low concentration slag remover through a first pipe; The outlet of the short fiber slurry storage tower is connected to the first pipe in front of the inlet of the medium fiber low concentration slag remover via a second pipe.

3. The processing system for a short fiber to medium fiber system of claim 1, wherein, Also includes: A flow regulating device is installed on the slurry delivery pipeline between the short fiber slurry storage tower and the medium fiber low concentration slag remover.

4. The processing system of a short fiber to medium fiber system according to claim 3, wherein, The flow regulating device includes: A flow meter is installed on the slurry delivery pipeline between the short fiber slurry storage tower and the medium fiber low concentration slag remover. An automatic regulating valve is installed on the slurry delivery pipeline between the short fiber slurry storage tower and the medium fiber low concentration slag remover, and the automatic regulating valve is connected to the flow meter.

5. The processing system for a short fiber to medium fiber system of claim 1 wherein, The thermal dispersion device includes: A pressing screw, the inlet of which is connected to the outlet of the medium-fiber low-concentration slag remover; A feed plug screw, wherein the feed inlet of the feed plug screw is connected to the discharge outlet of the pressing screw; A crushing spiral, wherein the feed inlet of the crushing spiral is connected to the discharge outlet of the feed plug spiral; A heating spiral, wherein the feed inlet of the heating spiral is connected to the discharge outlet of the crushing spiral; A feeding screw, wherein the inlet of the feeding screw is connected to the outlet of the heating screw; A thermal disperser, wherein the feed inlet of the thermal disperser is connected to the discharge outlet of the heating screw, and the discharge outlet of the thermal disperser is connected to the medium fiber slurry storage tower.

6. The processing system of a short fiber to medium fiber system according to claim 5, wherein, The heating spiral is a steam-heating spiral.

7. The processing system for a short fiber to medium fiber system of claim 1 wherein, Also includes: A medium-fiber lightweight slag remover is disposed between the medium-fiber low-concentration slag remover and the thermal dispersion device.

8. The processing system for connecting short fibers to a medium fiber system according to claim 1, characterized in that, The slurry pretreatment device includes: A pulper, wherein the feed inlet of the pulper is connected to the chain conveyor; A discharge tower, wherein the inlet of the discharge tower is connected to the outlet of the pulper; A coarse screening device, wherein the inlet of the coarse screening device is connected to the outlet of the unloading tower, and the outlet of the coarse screening device is connected to the inlet of the primary grading screen device.

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