Knife roll crushing device and crusher

Abstract

The knife roll crushing device comprises a knife roll driving mechanism and an anti-winding assembly, the knife roll driving mechanism comprises a driving part, a knife roll shaft and a cutterhead assembly, the knife roll shaft is used for being rotatably installed on a crushing shell, and the cutterhead assembly is arranged on the knife roll shaft and arranged in a crushing cavity formed by the crushing shell. The driving part is used for driving the cutter roller shaft to rotate, the anti-winding assembly is arranged on the cutter roller shaft in a sleeving mode and located on the side, facing the feeding port of the smashing cavity, of the cutter head assembly, the outer side of the anti-winding assembly is of a rotary cutting structure or a rotatable structure, the rotary cutting structure can cut long and thin soft materials, winding is avoided, and the anti-winding effect is good. When the knife roll crushing device works normally, chippings generated after cutting normally enter the discharging port of the crushing cavity, the rotatable structure can freely rotate relative to the knife roll shaft, even if long and thin soft materials are wound around the anti-winding assembly, the rotation motion of the knife roll shaft is still not affected, and it is guaranteed that the knife roll crushing device can work normally.

Description

Technical Field

[0001] The utility model belongs to the technical field of garden cleaning equipment, and in particular relates to a knife roller crushing device and a crusher. Background Art

[0002] In order to effectively transport garden waste, a crusher is usually used to crush branches, fallen leaves and other waste. The existing crusher drives the cutter disc assembly to rotate through a motor to cut the branches, thereby achieving the purpose of crushing the branches. The knife roller shaft is not protected. During the process of crushing branches, if there are thin and soft materials such as bark or fishing line that are difficult to cut, these soft materials are easy to entangle the knife roller shaft during the process of the knife roller rotating to cut the branches, causing the crusher to stop and unable to continue working. Utility Model Content

[0003] In view of the above-mentioned defects or shortcomings, the utility model provides a knife roller crushing device and a crusher, aiming to solve the technical problem that soft material wraps around the knife roller shaft during the knife roller cutting process, causing the crusher to stop.

[0004] To achieve the above-mentioned purpose, the utility model provides a knife roller crushing device, wherein the knife roller crushing device includes a knife roller driving mechanism and an anti-winding component, the knife roller driving mechanism includes a driving member, a knife roller shaft and a knife disc assembly, the knife roller shaft is used to be rotatably mounted on a crushing shell, the knife disc assembly is arranged on the knife roller shaft and is placed in a crushing chamber formed by the crushing shell, the driving member is used to drive the knife roller shaft to rotate, the anti-winding component is sleeved on the knife roller shaft and is located on the side of the knife disc assembly facing the feed port of the crushing chamber, and the outer side of the anti-winding component is set as a rotary cutting structure or a rotatable structure.

[0005] In an embodiment of the utility model, the anti-winding component includes a rotary cutting blade, which includes a connecting ring portion and a plurality of tooth portions configured as a rotary cutting structure. The connecting ring portion is fixedly sleeved on the knife roller shaft and is located on the side of the cutter disc assembly facing the feed port of the crushing chamber. The plurality of tooth portions are sequentially spaced along the circumferential direction of the connecting ring portion on the outer annular surface of the connecting ring portion, and the plurality of tooth portions are all provided with cutting blade surfaces.

[0006] In the embodiment of the utility model, the axis center line of the outer ring surface of the connecting ring part is arranged collinearly with the axis center line of the knife roller shaft, and the cutting knife surface is arranged tangent to the outer ring surface.

[0007] In the embodiment of the utility model, a connecting key is provided on the knife roller shaft, and a key groove for key connection with the connecting key is formed on the inner ring surface of the connecting ring part.

[0008] In an embodiment of the utility model, the anti-winding component includes a bearing component, the inner ring of the bearing component is sleeved on the knife roller shaft and is located on the side of the knife disc assembly facing the feed inlet of the crushing chamber, and the outer ring of the bearing component is set as a rotatable structure for soft material to wind.

[0009] In an embodiment of the utility model, the anti-winding assembly further comprises a protective sleeve sleeved on the outer ring of the bearing component.

[0010] In an embodiment of the utility model, the knife roller crushing device also includes a supporting assembly for supporting the knife roller shaft, the supporting assembly includes a first bearing seat and a second bearing seat for being installed on the crushing shell and located outside the crushing chamber, and the first bearing seat is used to be arranged close to the feed port, and a positioning sleeve is also provided between the anti-winding assembly and the first bearing seat and is sleeved on the knife roller shaft.

[0011] In an embodiment of the utility model, the knife roller shaft includes a first shaft section, a second shaft section and a third shaft section which are arranged in sequence along the axial direction, the second shaft section is arranged in the crushing chamber, the first shaft section and the third shaft section are respectively and one by one passed through the first bearing seat and the second bearing seat, the shaft diameter of the first shaft section is smaller than the shaft diameter of the second shaft section to form a first axial positioning surface, the positioning sleeve and the anti-winding component are both arranged on the first shaft section, and the positioning sleeve and the axial positioning surface respectively perform axial positioning on the anti-winding component from both sides, and the knife disc assembly is arranged on the second shaft section and abuts against the anti-winding assembly.

[0012] In an embodiment of the utility model, a second axial positioning surface is formed from the second shaft segment to the third shaft segment, and the cutter disc assembly includes a connecting sleeve and a cutter disc body, one end of the connecting sleeve abuts against the second axial positioning surface, and a connecting portion protrudes to form a detachable connection with the cutter disc body, and the other end of the connecting sleeve abuts against the anti-winding assembly.

[0013] In order to achieve the above-mentioned object, the utility model also provides a crusher, wherein the crusher includes the above-mentioned knife roller crushing device.

[0014] Through the above technical solution, the knife roller crushing device provided by the embodiment of the utility model has the following beneficial effects:

[0015] When the above-mentioned knife roller crushing device is used, it includes a knife roller driving mechanism and an anti-winding component. The knife roller driving mechanism includes a driving member, a knife roller shaft and a knife disc component. The knife roller shaft is used to be rotatably installed on the crushing shell. The knife disc component is arranged on the knife roller shaft and placed in the crushing chamber formed by the crushing shell. After the knife roller crushing device is started, the driving member drives the knife roller shaft to rotate, and the knife disc component on the knife roller shaft starts to cut. Most of the materials pass through the knife disc component and are cut into debris, while a small part of the slender soft materials are not cut off by the knife disc component in time, and are wound around the anti-winding component as the knife disc component rotates. The anti-winding component processes the above-mentioned slender soft materials, and the outer side of the anti-winding component can be set to either a rotary cutting structure or a rotatable structure. If the outer side of the anti-winding component is set to a rotary cutting structure, the slender soft material can be cut to avoid entanglement, and the cut debris enters the discharge port of the crushing chamber normally; if the outer side of the anti-winding component is set to a rotatable structure, even if the slender soft material is wound around the anti-winding component, since the outer side of the anti-winding component can rotate freely relative to the knife roller shaft, the rotational motion of the knife roller shaft itself is not affected, and the knife roller crushing device can still work normally.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of a knife roller crushing device according to an embodiment of the utility model;

[0019] Figure 2 It is a partial schematic diagram of a knife roller crushing device according to an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of a rotary cutting blade according to an embodiment of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a knife roller crushing device according to another embodiment of the utility model;

[0022] Figure 5 It is a partial schematic diagram of a knife roller crushing device according to another embodiment of the utility model;

[0023] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle.

[0024] Description of Reference Numerals

[0025] 1 knife roller drive mechanism 11 drive parts

[0026] 12 Knife roller shaft 121 first shaft section

[0027] 122 Second shaft section 123 Third shaft section

[0028] 13 Cutter assembly 131 Connecting sleeve

[0029] 132 Cutter body 2 Anti-winding component

[0030] 21 rotary cutting blade 211 connecting ring

[0031] 2111 Outer ring surface 2112 Inner ring surface

[0032] 2113 keyway 212 tooth part

[0033] 2121 cutting blade 22 bearing parts

[0034] 23 Protective sleeve 24 Positioning sleeve

[0035] 31 First bearing seat 32 Second bearing seat

[0036] 33 Seat body 331 Bearing mounting hole

[0037] 34 bearing body 341 first contact portion

[0038] 342 second contact portion 4 grinding shell

[0039] 41 Crushing chamber 5 Speed ​​measuring wheel

[0040] 6 Coupling DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0042] The knife roller crushing device and crusher of the present invention are described with reference to the accompanying drawings.

[0043] like Figure 1 and Figure 3 As shown, the utility model provides a knife roller crushing device, wherein the knife roller crushing device comprises:

[0044] The cutter roller drive mechanism 1 comprises a drive member 11, a cutter roller shaft 12 and a cutter disc assembly 13. The cutter roller shaft 12 is used to be rotatably mounted on the pulverizing shell 4. The cutter disc assembly 13 is arranged on the cutter roller shaft 12 and is placed in a pulverizing chamber 41 formed by the pulverizing shell 4. The drive member 11 is used to drive the cutter roller shaft 12 to rotate.

[0045] The anti-winding component 2 is sleeved on the knife roller shaft 12 and is located on the side of the knife disc component 13 facing the feed inlet of the crushing chamber 41, and the outer side of the anti-winding component 2 is set as a rotary cutting structure or a rotatable structure.

[0046] When the above-mentioned knife roller crushing device is used, it includes a knife roller driving mechanism 1 and an anti-winding component 2. The knife roller driving mechanism 1 includes a driving member 11, a knife roller shaft 12 and a knife disc assembly 13. The knife roller shaft 12 is used to be rotatably installed on the crushing shell 4. The knife disc assembly 13 is arranged on the knife roller shaft 12 and placed in the crushing chamber 41 formed by the crushing shell 4. After the knife roller crushing device is started, the driving member 11 drives the knife roller shaft 12 to rotate, and the knife disc assembly 13 on the knife roller shaft 12 starts to cut. Most of the materials pass through the knife disc assembly 13 and are cut into debris, while a small part of the slender soft materials are not cut off by the knife disc assembly 13 in time, and as the knife disc assembly 13 rotates, the material is crushed. The anti-winding component 2 is wound around the slender soft material, and the anti-winding component 2 processes the above-mentioned slender soft material. The outer side of the anti-winding component 2 can be set to any one of a rotary cutting structure and a rotatable structure. If the outer side of the anti-winding component 2 is set to a rotary cutting structure, the slender soft material can be cut to avoid winding, and the cut debris enters the discharge port of the crushing chamber 41 normally; if the outer side of the anti-winding component 2 is set to a rotatable structure, even if the slender soft material is wound around the anti-winding component 2, since the outer side of the anti-winding component 2 can rotate freely relative to the knife roller shaft 12, the rotational movement of the knife roller shaft 12 itself is not affected, and the knife roller crushing device can still work normally.

[0047] like Figure 2As shown, in the embodiment of the utility model, the anti-winding assembly 2 includes a rotary cutting blade 21, and the rotary cutting blade 21 includes a connecting ring portion 211 and a plurality of blade teeth 212 configured as a rotary cutting structure. The connecting ring portion 211 is fixedly sleeved on the cutter roller shaft 12 and is located on the side of the cutter disc assembly 13 that faces the feed port of the crushing chamber 41. The plurality of blade teeth 212 are sequentially spaced along the circumferential direction of the connecting ring portion 211 on the outer annular surface 2111 of the connecting ring portion 211, and the plurality of blade teeth 212 are all provided with a cutting blade surface 2121. After the cutter roller crushing device starts working, the cutter disc assembly 13 starts cutting, and the uncut slender soft materials such as bark and branches rotate with the cutter roller shaft 12, and the rotary cutting blade 21 can cut the slender soft materials to prevent them from winding around the cutter roller shaft 12, so as to achieve the purpose of not affecting the normal operation of the crusher. The angle between the extension direction of the cutting blade 2121 and the rotation direction of the knife roller shaft 12 is set to be greater than 90° to ensure the cutting effect. In one embodiment of the utility model, the axis line of the outer ring surface 2111 of the connecting ring part 211 is set colinearly with the axis line of the knife roller shaft 12, and the cutting blade surface 2121 is set tangent to the outer ring surface 2111.

[0048] In the embodiment of the utility model, a connection key is provided on the blade roller shaft 12, and a keyway 2113 for key connection with the connection key is formed on the inner ring surface 2112 of the connecting ring portion 211. The rotary cutting blade 21 is installed through a detachable structure for easy replacement.

[0049] Specifically, the connecting key is an independent structure, and a connecting groove for installing the connecting key is formed on the knife roller shaft 12. The lower end of the connecting key is clamped in the connecting groove, and the upper end is used to be embedded in the key groove 2113 to clamp the connecting ring part 211, so as to realize the radial positioning of the rotary cutting blade 21. Of course, the connecting key can also be integrated with the knife roller shaft 12.

[0050] like Figure 4 As shown, in the embodiment of the utility model, the anti-winding component 2 includes a bearing member 22, the inner ring of the bearing member 22 is sleeved on the cutter roller shaft 12 and is located on the side of the cutter disc assembly 13 facing the feed port of the crushing chamber 41, and the outer ring of the bearing member 22 is set as a rotatable structure for the soft material to be wound. After the cutter roller crushing device starts working, the cutter disc assembly 13 starts cutting, and the uncut slender soft materials such as bark and branches rotate with the cutter roller shaft 12 and are wound around the bearing member 22, and the outer ring of the bearing member 22 can rotate freely relative to the cutter roller shaft 12, and the slender soft materials are wound around the bearing member 22, but do not affect the rotation of the cutter roller shaft 12, thereby ensuring the normal operation of the crusher.

[0051] Specifically, the bearing member 22 is preferably a self-sealing bearing. There is a lot of dust floating in the grinder. The purpose of using a self-sealing bearing is to prevent dust from entering the bearing member 22 and ensure that the bearing member 22 can work stably for a long time.

[0052] Furthermore, in order to prevent the bearing component 22 itself from being scratched by branches, bark, etc., a protective sleeve 23 is also provided on the outer ring of the bearing component 22 to avoid direct contact between the material and the bearing component 22. The protective sleeve 23 is detachably connected to the outer ring of the bearing component 22, so that the operator can replace the protective sleeve 23 after it is worn to a certain extent.

[0053] like Figure 1 and Figure 2 As shown, in the embodiment of the utility model, the knife roller pulverizing device also includes a supporting assembly for supporting the knife roller shaft 12, and the supporting assembly includes a first bearing seat 31 and a second bearing seat 32 for being installed on the pulverizing shell 4 and located outside the pulverizing chamber 41, and the first bearing seat 31 is used to be arranged close to the feed port, and a positioning sleeve 24 sleeved on the knife roller shaft 12 is also provided between the anti-winding assembly 2 and the first bearing seat 31, one end of the positioning sleeve 24 abuts on the first bearing seat 31, and the other end extends into the pulverizing chamber 41 and abuts on the anti-winding assembly 2, so as to perform axial positioning on the anti-winding assembly 2, see Figure 2 The anti-winding component 2 is in contact with the positioning sleeve 24 and a certain gap is left between the anti-winding component 2 and the inner wall of the pulverizing shell 4 to avoid direct contact between the two and friction loss.

[0054] Specifically, the first bearing seat 31 and the second bearing seat 32 each include a seat body 33 and a bearing body 34, see Figure 6 The seat body 33 is arranged on the side wall of the pulverizing shell 4 and is formed with a bearing mounting hole 331. The outer ring of the bearing body 34 is formed with a first abutting portion 341 and a second abutting portion 342. The second abutting portion 342 protrudes from the inner edge of the first abutting portion 341 to form an L-shaped abutting surface, wherein the first abutting portion 341 abuts against the outer side of the bearing mounting hole 331 and is fixedly connected to the seat body 33 by a threaded fastener, and the second abutting portion 342 extends into the bearing mounting hole 331 and abuts against the bottom wall of the bearing mounting hole 331.

[0055] like Figure 2 or Figure 4As shown, in an embodiment of the utility model, the knife roller shaft 12 includes a first shaft section 121, a second shaft section 122 and a third shaft section 123 arranged in sequence along the axial direction, the second shaft section 122 is arranged in the crushing chamber 41, the first shaft section 121 and the third shaft section 123 are respectively and one by one penetrated on the first bearing seat 31 and the second bearing seat 32, the shaft diameter of the first shaft section 121 is smaller than the shaft diameter of the second shaft section 122 to form a first axial positioning surface, the positioning sleeve 24 and the anti-winding component 2 are both arranged on the first shaft section 121, and the positioning sleeve 24 and the axial positioning surface respectively perform axial positioning on the anti-winding component 2 from both sides, and the knife disc component 13 is arranged on the second shaft section 122 and abuts against the anti-winding component 2. The positions of the cutter disc assembly 13 and the anti-winding assembly 2 can be quickly determined through shaft segments with different shaft diameters, which facilitates positioning and installation. In addition, soft material is easily wrapped around the cutter roller shaft 12 at a position close to the working surface of the cutter disc assembly 13. The cutter disc assembly 13 abuts against the anti-winding assembly 2 to prevent the soft material from being wrapped around the cutter roller shaft 12.

[0056] In the embodiment of the utility model, the second shaft segment 122 and the third shaft segment 123 form a second axial positioning surface, and the cutter disc assembly 13 includes a connecting sleeve 131 and a cutter disc body 132. One end of the connecting sleeve 131 abuts against the second axial positioning surface and protrudes to form a connecting portion 133. The connecting portion 133 is provided with a threaded fastener for connecting the cutter disc body 132. The other end of the connecting sleeve 131 abuts against the anti-winding assembly 2.

[0057] It should be noted that the third shaft segment 123 is not a through rod with a single shaft diameter. The shaft diameter of the portion connected to the second shaft segment 122 is larger than that of the second shaft segment 122 so as to form a second axial positioning surface, and the shaft diameter of the portion passing through the second bearing seat 32 is the same as the shaft diameter of the first shaft segment 121.

[0058] In the embodiment of the utility model, a speed measuring wheel 5 is also installed at one end of the cutter roller shaft 12 close to the feed port of the crushing chamber 41 for real-time monitoring of the rotation speed of the cutter roller shaft 12 .

[0059] In the embodiment of the utility model, the driving member 11 is a driving motor, and the output shaft of the driving motor is connected to the knife roller shaft 12 through a coupling 6 .

[0060] In order to achieve the above objectives, the utility model also provides a crusher, wherein the crusher includes the above-mentioned knife roller crushing device. Since the crusher adopts all the technical solutions of the above-mentioned embodiments, it has at least the above-mentioned beneficial effects, which will not be described one by one here.

[0061] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A knife roller crushing device, characterized in that: The knife roller crushing device comprises: A knife roller drive mechanism (1) comprises a drive member (11), a knife roller shaft (12) and a knife disc assembly (13), wherein the knife roller shaft (12) is used to be rotatably mounted on a pulverizing shell (4), the knife disc assembly (13) is arranged on the knife roller shaft (12) and is placed in a pulverizing chamber (41) formed by the pulverizing shell (4), and the drive member (11) is used to drive the knife roller shaft (12) to rotate; An anti-winding component (2) is sleeved on the knife roller shaft (12) and is located on a side of the knife disc component (13) facing the feed inlet of the crushing chamber (41), and the outer side of the anti-winding component (2) is configured as a rotary cutting structure or a rotatable structure.

2. The knife roller crushing device according to claim 1, characterized in that: The anti-winding component (2) comprises a rotary cutting blade (21), the rotary cutting blade (21) comprising a connecting ring portion (211) and a plurality of blade teeth portions (212) provided as the rotary cutting structure, the connecting ring portion (211) being fixedly sleeved on the knife roller shaft (12) and being located on a side of the knife disc component (13) facing a feed inlet of the pulverizing chamber (41), the plurality of blade teeth portions (212) being arranged in sequence and spaced apart on an outer annular surface (2111) of the connecting ring portion (211) along the annular direction of the connecting ring portion (211), and the plurality of blade teeth portions (212) are all provided with a cutting blade surface (2121).

3. The knife roller crushing device according to claim 2, characterized in that: The axis center line of the outer annular surface (2111) of the connecting ring portion (211) is arranged colinearly with the axis center line of the knife roller shaft (12), and the cutting knife surface (2121) is arranged tangentially to the outer annular surface (2111).

4. The knife roller crushing device according to claim 2, characterized in that: The knife roller shaft (12) is provided with a connecting key, and the inner ring surface (2112) of the connecting ring portion (211) is formed with a key groove (2113) for key connection with the connecting key.

5. The knife roller crushing device according to claim 1, characterized in that: The anti-winding component (2) comprises a bearing member (22), the inner ring of the bearing member (22) is sleeved on the knife roller shaft (12) and is located on the side of the knife disc component (13) facing the feed inlet of the crushing chamber (41), and the outer ring of the bearing member (22) is set as the rotatable structure for the soft material to be wound.

6. The knife roller crushing device according to claim 5, characterized in that: The anti-winding component (2) also includes a protective sleeve (23) sleeved on the outer ring of the bearing component (22).

7. The knife roller crushing device according to any one of claims 1 to 6, characterized in that: The knife roller pulverizing device further comprises a support assembly for supporting the knife roller shaft (12), the support assembly comprising a first bearing seat (31) and a second bearing seat (32) for being mounted on the pulverizing shell (4) and located outside the pulverizing chamber (41), and the first bearing seat (31) is arranged close to the feed port, and a positioning sleeve (24) sleeved on the knife roller shaft (12) is further arranged between the anti-winding assembly (2) and the first bearing seat (31).

8. The knife roller crushing device according to claim 7, characterized in that: The knife roller shaft (12) comprises a first shaft section (121), a second shaft section (122) and a third shaft section (123) which are sequentially arranged along the axial direction; the second shaft section (122) is arranged in the crushing chamber (41); the first shaft section (121) and the third shaft section (123) are respectively and one-to-one arranged on the first bearing seat (31) and the second bearing seat (32); the shaft diameter of the first shaft section (121) is smaller than the shaft diameter of the second shaft section (122) to form a first axial positioning surface; the positioning sleeve (24) and the anti-winding component (2) are both arranged on the first shaft section (121); and the positioning sleeve (24) and the axial positioning surface respectively perform axial positioning on the anti-winding component (2) from two sides; the knife disc component (13) is arranged on the second shaft section (122) and abuts against the anti-winding component (2).

9. The knife roller crushing device according to claim 8, characterized in that: A second axial positioning surface is formed from the second shaft section (122) to the third shaft section (123); the cutter disc assembly (13) comprises a connecting sleeve (131) and a cutter disc body (132); one end of the connecting sleeve (131) abuts against the second axial positioning surface and is protrudingly formed with a connecting portion (133) for detachably connecting to the cutter disc body (132); the other end of the connecting sleeve (131) abuts against the anti-winding assembly (2).

10. A pulverizer, characterized in that: The pulverizer comprises a knife roller pulverizing device according to any one of claims 1 to 9.

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