A device for dismantling waste paper raw materials

Abstract

This invention relates to the field of waste paper shredding technology, and discloses a waste paper raw material shredding device. The waste paper raw material shredding device in this application includes: a housing, a primary coarse shredding component, a secondary fine shredding component, a tertiary fine shredding component, and an impurity separation component. Traditional waste paper shredding production lines typically require independently arranged coarse shredders, medium shredders, and fine shredders, which not only occupy a large amount of plant space but also increase equipment investment and infrastructure costs. This device adopts a vertical multi-layer layout, integrating each stage of shredding components into a single housing, greatly simplifying the system structure and reducing the equipment footprint and overall cost. Through a three-stage cascade shredding design (dual-shaft shear coarse shredding → high-speed single-shaft shear fine shredding → hammer mill fine shredding), progressive shredding of waste paper is achieved.

Description

Technical Field

[0001] This application relates to the field of waste paper shredding technology, for example to a device for shredding waste paper raw materials. Background Technology

[0002] The descriptions in this section are provided only as background information relating to this disclosure and do not constitute prior art.

[0003] Currently, in the field of waste paper recycling, traditional processes typically rely on multi-stage shredding. Specifically, this type of process requires various shredding devices of different sizes, such as coarse shredders, medium shredders, and fine shredders, to progressively crush the waste paper until it is broken into small fragments that meet the requirements of subsequent processing. While this method can achieve the shredding and reuse of waste paper to some extent, it has significant drawbacks:

[0004] First, the need to configure multiple independent shredding devices and arrange them sequentially results in a complex structure and large footprint for the entire shredding system. This not only increases equipment investment and plant construction costs but also makes the process layout lack compactness. Second, the need to transfer materials between different devices during multi-stage shredding not only increases energy consumption and operating and maintenance costs but also poses risks of dust pollution and impurity introduction due to material transfer and multiple processing steps, affecting the quality stability of recycled paper products. Summary of the Invention

[0005] This application provides a waste paper raw material shredding device. Traditional waste paper shredding production lines typically require separate coarse shredders, medium shredders, and fine shredders, which not only occupy a large amount of plant space but also increase equipment investment and infrastructure costs. This device adopts a vertical multi-layer layout, integrating each stage of shredding components into a single housing, greatly simplifying the system structure and reducing the equipment footprint and overall cost. Through a three-stage cascade shredding design (biaxial shear coarse shredding → high-speed single-axis shear fine shredding → hammer mill fine shredding), progressive shredding of waste paper is achieved. This design helps control the degree of shredding, reduces energy loss caused by over-shredding, and ensures uniform output particle size, which is beneficial for subsequent pulp processing.

[0006] A waste paper raw material crushing device includes: a box, a primary coarse crushing component, a secondary fine crushing component, a tertiary fine crushing component, and an impurity separation component.

[0007] The chamber is arranged longitudinally, and its inner side is arranged from top to bottom as follows: feed inlet, primary coarse crushing component, secondary fine crushing component, tertiary fine crushing component, and impurity separation component;

[0008] The primary coarse crushing component is configured as a dual-shaft shear crusher;

[0009] The secondary fine crushing component is configured as a high-speed single-shaft shear crusher;

[0010] The three-stage fine crushing component is configured as a hammer crusher;

[0011] The impurity separation component separates paper fibers and metallic impurities and discharges them from the box.

[0012] In some embodiments, the secondary crushing component includes:

[0013] The motor is fixedly mounted on the outside of the housing via a motor bracket.

[0014] The first main shaft is rotatably mounted inside the housing, with one end extending through the outside of the housing and connected to the motor via a belt and pulley.

[0015] The first crushing blade has multiple blades, which are fixedly mounted on the first main shaft at intervals. Adjacent blades can rotate 45° axially, and one side has an arc-shaped blade.

[0016] Fixed blades are spaced apart on the inner wall of the chamber, alternating with the crushing blades, and the upper part of the blades is provided with a fixed blade that cooperates with the curved blade.

[0017] In some embodiments, the primary coarse crushing component includes:

[0018] There are two second main shafts, which are rotatably mounted inside the housing. One of the second main shafts extends through the outside of the housing and is connected to the first main shaft via a reduction belt pulley. The two second main shafts mesh with each other through gears.

[0019] The second crushing blades are provided in multiples and fixedly mounted on the second main shaft at intervals. Each blade has multiple cutting edges on its surface and a second spacer sleeve is provided in the interval area. The second crushing blades on the two second main shafts are arranged alternately, and the cutting edges cooperate with the surfaces of the oppositely arranged second spacer sleeves to crush the blades.

[0020] In some embodiments, the three-stage refining component includes:

[0021] The third main shaft is rotatably mounted inside the housing, with one end extending through the outside of the housing and connected to the first main shaft via a pulley.

[0022] Multiple fixed discs are provided and are arranged at intervals on the third main shaft;

[0023] The crushing head includes: a ball part and a T-shaped rod. The T-shaped rod is rotatably disposed in the interval between the fixed discs. The ball part is fixedly connected to the end of the T-shaped rod and located outside the fixed disc. Multiple crushing heads can be disposed in the interval between adjacent fixed discs.

[0024] The crushing groove is set on the outer arc surface of the sphere and distributed circumferentially along the third main axis on the outer half of the sphere, so that the edge of one or both sides of the crushing groove forms a cutting edge in an arc shape. Multiple crushing grooves can be set.

[0025] The cover is fixed inside the box. The upper part has an opening to receive the discharge of the secondary fine crushing component, the middle part is a cylinder sleeved on the outside of the crushing head, and the lower part of the cylinder has discharge mesh holes.

[0026] In some embodiments, the impurity separation component includes:

[0027] The separation chamber is located inside the box. From left to right, the upper part of the chamber consists of a dust collection chamber, a paper scrap separation zone, and a metal separation zone. The lower part of the paper scrap separation zone is connected to the paper scrap collection chamber, and the lower part of the metal separation zone is connected to the metal scrap collection chamber. The upper right side of the metal separation zone has a feed inlet, and the upper right side wall of the metal separation zone has an air inlet. The dust collection chamber is connected to a bag filter, and the paper scrap collection chamber is connected to a cyclone separator or a pneumatic conveying device. The lower part of the metal scrap collection chamber has a discharge outlet.

[0028] The guide plate, located above the separation chamber and fixedly installed inside the box, guides the paper scraps shredded by the three-stage crushing components into the feed inlet;

[0029] An arc-shaped baffle is fixedly installed on the left side of the metal separation zone. It is located on the left side below the feed inlet and opposite the air inlet. Multiple baffles are arranged longitudinally at intervals. Its left side is higher than its right side, and its arc-shaped concave surface faces the upper right.

[0030] A separation plate is fixedly installed in the paper scrap separation area. Its left side is connected to the dust collection bin. It includes a horizontal section, an arc-shaped section, and a vertical section. Multiple sections are arranged at intervals between each other. The interval area forms a paper scrap channel. Its horizontal section extends to the left side of the arc-shaped baffle. Its arc-shaped section and / or vertical section are provided with filter separation holes at the top. The concave surface of the arc-shaped section faces the lower right. Its vertical section extends into the paper scrap collection bin.

[0031] The first fan is fixedly installed outside the housing and connected to the air inlet.

[0032] In some embodiments, the waste paper raw material shredding device further includes:

[0033] The second fan is fixedly installed outside the housing;

[0034] The first air guide hood is fixedly installed inside the box, and one side is connected to the second fan. It is located near the upper end of the guide plate, and its air outlet is directed towards the paper scraps on the guide plate, blowing the paper scraps on the guide plate into the feed inlet.

[0035] In some embodiments, a second air guide hood is provided between the air inlet and the first fan. The second air guide hood is fixed on the housing, with one end connected to the air inlet and the other end connected to the first fan. It has one or more flow equalization plates inside, and flow equalization holes are provided on the flow equalization plates.

[0036] In some embodiments, the housing is composed of multiple sections.

[0037] In some embodiments, the feed inlet of the housing is provided with a feed hopper.

[0038] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0039] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are considered similar elements. The drawings do not constitute a limitation of scale, and wherein:

[0040] Figure 1 This is a schematic diagram of the external three-dimensional structure of a waste paper raw material shredding device provided in an embodiment of this disclosure;

[0041] Figure 2 This is a front view structural diagram of a waste paper raw material shredding device provided in an embodiment of this disclosure;

[0042] Figure 3 This is a side view of a waste paper raw material shredding device provided in an embodiment of the present disclosure;

[0043] Figure 4 This is a three-dimensional schematic diagram of the interior of a waste paper raw material shredding device provided in an embodiment of this disclosure;

[0044] Figure 5 This is a front view of the internal structure of a waste paper raw material shredding device provided in an embodiment of this disclosure;

[0045] Figure 6 This is a front view internal cross-sectional view of a waste paper raw material shredding device provided in an embodiment of this disclosure;

[0046] Figure 7 This is a side view of the internal cross-sectional structure of a waste paper raw material shredding device provided in an embodiment of this disclosure.

[0047] Figure label:

[0048] 11. Housing; 111. Feed hopper; 12. Primary coarse crushing assembly; 121. Secondary main shaft; 122. Secondary crushing blade; 13. Secondary fine crushing assembly; 131. First main shaft; 132. First crushing blade; 14. Tertiary fine crushing assembly; 141. Third main shaft; 142. Fixed plate; 143. Crushing head; 144. Crushing trough; 145. Cover; 15. Motor; 16. Second fan; 17. First fan; 18. Impurity separation assembly; 181. Separation chamber; 182. Dust collection chamber; 183. Paper scrap collection chamber; 184. Metal scrap collection chamber; 185. Arc-shaped baffle; 186. Separation plate; 187. Guide plate. Detailed Implementation

[0049] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0050] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0051] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0052] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0053] Unless otherwise stated, the term "multiple" means two or more.

[0054] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0055] Combination Figure 1-4 As shown in the figure, this disclosure provides a waste paper raw material crushing device, including: a box 11, a primary coarse crushing component 12, a secondary fine crushing component 13, a tertiary fine crushing component 14, and an impurity separation component 18.

[0056] The box body 11 is arranged longitudinally, and its inner side is provided with a feed inlet, a primary coarse crushing component 12, a secondary fine crushing component 13, a tertiary fine crushing component 14, and an impurity separation component 18 from top to bottom.

[0057] The primary coarse crushing component 12 is configured as a dual-shaft shear crusher;

[0058] The secondary fine crushing component 13 is configured as a high-speed single-shaft shear crusher;

[0059] The three-stage fine crushing component 14 is configured as a hammer crusher;

[0060] The impurity separation component 18 separates paper fibers and metallic impurities and discharges them from the housing 11. The impurity separation component 18 can simultaneously remove metallic impurities and dust during the pulping process, effectively reducing the risk of contamination caused by material transfer and improving the cleanliness and quality stability of the recycled pulp. The cleverly designed arc-shaped baffle 185 and separation plate 186 within its separation chamber 181 enhance the efficiency of airflow separation.

[0061] Traditional waste paper shredding production lines typically require separate setups for coarse shredders, medium shredders, and fine shredders, which not only occupy a significant amount of plant space but also increase equipment investment and infrastructure costs. This device adopts a vertical, multi-layered layout, integrating each stage of shredding components into a single housing 11, greatly simplifying the system structure and reducing the equipment footprint and overall cost. Through a three-stage cascade shredding design (biaxial shear coarse shredding → high-speed single-axis shear fine shredding → hammer mill fine shredding), progressive shredding of waste paper is achieved. This design helps control the degree of shredding, reduces energy loss from over-shredding, and ensures uniform output particle size, which is beneficial for subsequent pulp processing.

[0062] In some embodiments, the secondary crushing component 13 includes:

[0063] Motor 15 is fixedly mounted on the outside of housing 11 via motor 15 bracket;

[0064] The first main shaft 131 is rotatably installed inside the housing 11, with one end extending through to the outside of the housing 11 and connected to the motor 15 via a belt and pulley. The motor 15 is directly driven by the belt to obtain high-speed rotational power and quickly shred coarse waste paper.

[0065] The first crushing blade 132 is provided in multiples, such as 8, and is fixedly arranged on the first main shaft 131 at intervals. The first spacer sleeve is provided at the interval and is sleeved on the first main shaft 131. The adjacent blades can rotate 45° axially and one side is provided with an arc-shaped blade.

[0066] Fixed blades are spaced apart on the inner wall of the housing 11, alternating with the crushing blades. Each fixed blade has a fixed edge at its upper part that mates with an arc-shaped blade. These fixed edges are located on both sides of the upper part of the fixed blades and mate with adjacent first crushing blades 132. The number of fixed blades is one more than the number of first crushing blades 132.

[0067] In some embodiments, the primary coarse crushing component 12 includes:

[0068] There are two second main shafts 121, which are rotatably mounted inside the housing 11. One end of the second main shaft 121 extends to the outside of the housing 11 and is connected to the first main shaft 131 via a reduction belt pulley. The two second main shafts 121 are meshed with each other by gears (the two second main shafts 121 are equipped with gears of the same size, and the two gears mesh with each other). The reduction belt pulley includes two pulleys with different diameters. The smaller one is fitted on the first main shaft 131, and the larger one is fitted on the second main shaft 121.

[0069] Multiple second crushing blades 122 are fixedly arranged on the second main shaft 121 at intervals. Each blade has multiple cutting edges, and a second spacer sleeve is provided in the interval area. The second crushing blades 122 on the two second main shafts 121 are arranged alternately, and the cutting edges cooperate with the surface of the oppositely arranged second spacer sleeve to crush the blades.

[0070] In some embodiments, the three-stage refining component 14 includes:

[0071] The third main shaft 141 is rotatably disposed inside the housing 11, with one end extending through the outside of the housing 11 and connected to the first main shaft 131 via a pulley.

[0072] There are multiple fixed disks 142, such as 7, which are arranged alternately on the third spindle 141;

[0073] The crushing head 143 includes: a ball part and a T-shaped rod. The T-shaped rod is rotatably disposed in the interval between the fixed disks 142. The ball part is fixedly connected to the end of the T-shaped rod and located outside the fixed disk 142. Multiple crushing heads 143, such as 6, can be disposed in the interval between adjacent fixed disks 142.

[0074] The crushing grooves 144 are located on the outer arc surface of the spherical part and are distributed circumferentially along the third main axis 141 on the outer half of the spherical part. The edges of one or both sides of the crushing grooves 144 form cutting edges. Multiple crushing grooves 144 can be provided. The crushing grooves 144 are semi-circular. The spherical part of the crushing head 143 is provided with three crushing grooves 144, which are respectively located in the middle and on both sides. The arc-shaped edges on both sides of the crushing groove 144 in the middle are cutting edges, and the outer edges of the crushing grooves 144 on both sides are cutting edges. The cutting edges greatly improve the crushing effect of the crushing head 143 on paper scraps, and quickly crush the paper scraps to the target size. In this way, the crushing head 143 has the dual effect of hammering and crushing.

[0075] The cover 145 is fixed inside the box 11. The upper part is provided with an opening to receive the discharge of the secondary fine crushing component 13. The middle part is a cylinder sleeved on the outside of the crushing head 143. The lower part of the cylinder is provided with a discharge mesh.

[0076] In some embodiments, the impurity separation component 18 includes:

[0077] Separation chamber 181 is located inside housing 11, below cover 145. The upper part of its interior, from left to right, consists of dust collection chamber 182, paper scrap separation zone, and metal separation zone. The lower part of its interior contains paper scrap collection chamber 183 and metal scrap collection chamber 184. The lower part of the paper scrap separation zone is connected to paper scrap collection chamber 183, and the lower part of the metal separation zone is connected to metal scrap collection chamber 184. The upper right side of the metal separation zone has a feed inlet, and the upper right side wall of the metal separation zone has an air inlet. Dust collection chamber 182 is connected to a bag filter, and paper scrap collection chamber 183 is connected to a cyclone separator or a pneumatic conveying device. The lower part of metal scrap collection chamber 184 has a discharge port. Discharge ramps are provided inside paper scrap collection chamber 183 and metal scrap collection chamber 184.

[0078] The guide plate 187 is located above the separation chamber 181 and is fixedly installed inside the box 11 to guide the paper scraps crushed by the three-stage fine crushing component 14 into the feed inlet.

[0079] An arc-shaped baffle 185 is fixedly installed on the left side of the metal separation zone, located below the feed inlet on the left side, opposite the air inlet. Multiple baffles are longitudinally spaced, with the left side higher than the right side, and the concave arc-shaped surface facing upwards and to the right. The arc-shaped baffle 185 separates metal shavings and paper scraps. The air blown in by the air inlet provides a leftward force to the material falling from the feed inlet. The material's movement speed varies depending on its shape and density. Metal shavings, due to their high density, small size, and definite shape, cannot slide or roll upwards along the surface of the arc-shaped baffle 185 after hitting it; instead, they bounce back to the right and fall into the metal shavings collection bin 184. Paper scraps, due to their low density, receive sufficient force through a well-designed airflow and can drift upwards and to the left along the spaced channels between the arc-shaped baffles 185.

[0080] The separating plate 186 is fixedly installed in the paper scrap separation area, and its left side is connected to the dust collection bin 182. It includes a horizontal section, an arc-shaped section, and a vertical section, which are arranged at intervals. The interval area forms a paper scrap channel. Its horizontal section extends to the left side of the arc-shaped baffle 185. The upper part of its arc-shaped section and / or vertical section is provided with filter separation holes. The concave surface of the arc-shaped section faces the lower right. Its vertical section extends into the paper scrap collection bin 183. The paper scrap collection bin 183 can be divided into different partition bins. Different partition bins are connected to the corresponding paper scrap channels to collect the paper scraps of the corresponding channels. Then, they are connected to the cyclone separator through a separate discharge port. In this way, paper scraps of different sizes and thicknesses can be separated. Paper scraps and dust flow from the gaps between the arc-shaped baffles 185 into the spaced channels of the separation plate 186. The horizontal section guides them into the arc-shaped section, where the filter separation holes separate the dust and paper scraps. The bag filter is connected to the dust collection chamber 182 and provides negative pressure adsorption. Dust flows from the paper scrap channel into the collection chamber and is drawn away. The cyclone separator and the air conveying device also provide negative pressure adsorption, adsorbing the paper scraps from the arc-shaped section to the vertical section, and then drawing them away from the discharge port for separation, storage, or further processing.

[0081] The first fan 17 is fixedly installed outside the housing 11 and connected to the air inlet.

[0082] In some embodiments, the waste paper raw material shredding device further includes:

[0083] The second fan 16 is fixedly installed outside the housing 11;

[0084] The first air guide hood is fixedly installed inside the housing 11. One side is connected to the second fan 16. It is located near the upper end of the guide plate 187. Its air outlet faces the paper scraps on the guide plate 187 and blows the paper scraps on the guide plate 187 into the feed inlet.

[0085] In some embodiments, a second air guide shroud is provided between the air inlet and the first fan 17. The second air guide shroud is fixed to the housing 11, with one end connected to the air inlet and the other end connected to the first fan 17. One or more flow equalization plates are provided inside the second air guide shroud, and flow equalization holes are provided on the flow equalization plates. The flow equalization plates serve to even out the incoming airflow.

[0086] In some embodiments, the housing 11 is composed of multiple sections.

[0087] In some embodiments, the feed inlet of the housing 11 is provided with a feed hopper 111.

[0088] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of this disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A waste paper raw material disintegrating apparatus characterized by comprising: The application relates to a paper fiber and metal impurity separating and crushing device. The device comprises a box body, an inlet, a primary coarse crushing assembly, a secondary fine crushing assembly, a tertiary fine crushing assembly and an impurity separating assembly. The primary coarse crushing assembly is a double-shaft shearing crusher. The secondary fine crushing assembly is a high-speed single-shaft shearing crusher. The tertiary fine crushing assembly is a hammer crusher. The impurity separating assembly separates paper fibers and metal impurities and discharges them from the box body. The impurity separating assembly comprises a separating bin, a guide plate, an arc-shaped baffle, a separating plate and a first fan. The separating bin is arranged in the box body and comprises a dust collecting bin, a paper scrap separating area and a metal separating area from left to right. The guide plate is arranged above the separating bin and is fixed in the box body. The arc-shaped baffle is fixed on the left side of the metal separating area below the inlet and opposite to the air inlet. The separating plate is fixed in the paper scrap separating area and comprises horizontal sections, arc-shaped sections and vertical sections. The first fan is fixed outside the box body and communicates with the air inlet.

2. A device for the pulping of waste paper raw material according to claim 1, characterized in that The secondary fine crushing assembly comprises a motor, a first main shaft, first crushing blades and fixed blades. The motor is fixed outside the box body through a motor support. The first main shaft is rotatably arranged in the box body and one end of the first main shaft penetrates through the box body and is connected with the motor through a belt and a belt pulley. The first crushing blades are arranged on the first main shaft and are staggered with the fixed blades. The primary coarse crushing assembly comprises two second main shafts, second crushing blades and second interval sleeves.

3. A device for the pulping of waste paper raw material according to claim 2, characterized in that The second main shafts are rotatably arranged in the box body and one end of one of the second main shafts penetrates through the box body and is connected with the first main shaft through a speed-reducing belt pulley. The second crushing blades are arranged on the second main shafts and are staggered with the second interval sleeves. The tertiary fine crushing assembly comprises a third main shaft, fixed discs and a hammer.

4. A device for the pulping of waste paper raw material according to claim 2, characterized in that The third main shaft is rotatably arranged in the box body and one end of the third main shaft penetrates through the box body and is connected with the first main shaft through a belt pulley. The fixed discs are arranged on the third main shaft and are staggered with the hammer. ​ The breaking head comprises a spherical part and a T-shaped rod, the T-shaped rod is rotatably arranged in the interval between the fixed discs, the spherical part is fixedly connected to the end of the T-shaped rod and located outside the fixed discs, and a plurality of breaking heads can be arranged in the interval between the adjacent fixed discs; The breaking groove is arranged on the arc surface outside the spherical part, distributed on the half side outside the spherical part along the third main shaft in a circumferential direction, and the edge of one side or both sides of the breaking groove is formed in an arc shape to form a cutting edge, and a plurality of breaking grooves can be arranged. The cover is fixed in the box, the upper part is provided with an opening for receiving the discharge of the secondary fine crushing assembly, the middle part is a cylinder arranged outside the breaking head, and the lower part of the cylinder is provided with a discharge mesh.

5. A device for pulping waste paper stock according to claim 1, wherein Further comprising: The second fan is fixedly arranged outside the box; The first air guide cover is fixedly arranged in the box, one side of which is communicated with the second fan and arranged close to the upper end of the material guiding inclined plate, the air outlet of which is directed to the paper scraps on the material guiding inclined plate, and the paper scraps on the material guiding inclined plate are blown into the feeding port.

6. A device for pulping waste paper stock according to claim 1, wherein A second air guide cover is arranged between the air inlet and the first fan, fixed on the box, one end of which is connected with the air inlet and the other end of which is connected with the first fan, and one or more flow uniformizing plates are arranged in the second air guide cover, and flow uniformizing holes are arranged on the flow uniformizing plates.

7. A device for the pulping of waste paper raw material according to claim 1, characterized in that The box is composed of multiple sections.

8. A device for pulping waste paper stock according to claim 1, wherein A feeding hopper is arranged on the feeding port of the box.

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