Wood fiber grinding device

Abstract

A wood fiber powder grinding device comprises a powder grinding machine, a driving disc, a grinding roller and a grinding lining plate. The grinding lining plate comprises a grinding ring fixed on the inner wall of the flour mill and a grinding arc plate mounted on the driving disc, and the grinding arc plate is positioned on the inner side of the grinding ring; and the grinding roller is rotationally installed on the driving disc and located between the grinding ring and the grinding arc plate, and a grinding channel is formed between the grinding roller and the grinding ring and between the grinding roller and the grinding arc plate, so that wood fibers in the material cavity are ground through the grinding roller and the grinding lining plate when passing through the grinding channel. The grinding arc plate is arranged on the driving disc, and the grinding arc plate and the grinding ring on the outer side jointly form the grinding lining plate, so that the contact area of the grinding roller and the grinding lining plate is increased, and the grinding efficiency of wood fibers is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fiber powder processing, and specifically refers to a wood fiber powder grinding device. Background Art

[0002] Wood fiber powder is a non-toxic and odorless organic material made from natural wood and renewable wood through chemical treatment and mechanical processing. During the processing, wood fiber powder is obtained by crushing wood raw materials to get coarse powder, and then through a series of technological steps such as bleaching, drying, and fine grinding. Wood fiber powder is an important component of leather additives and can be used to make various leather products to improve the softness and durability of leather.

[0003] Currently, the grinding step of wood fiber powder is to perform ultra-fine grinding in a wood powder mill. The grinding process mainly relies on multiple rotating grinding rollers and an annular lining plate to further crush and refine the wood fiber between the grinding rollers and the lining plate to obtain ultra-fine fiber powder. At the same time, a negative pressure device is externally connected to the top of the grinding mill to suck out the materials that do not reach the standard during grinding. However, the contact area between the grinding rollers and the lining plate is limited. When the wood powder raw materials enter the wood powder mill, they will remain in the rotation center area of multiple grinding rollers and be sucked out because they cannot participate in grinding in time, resulting in a reduction in the grinding efficiency of the entire wood powder mill. Therefore, there is an urgent need for an efficient wood fiber powder grinding device. Summary of the Invention

[0004] In view of the above situation, to overcome the defects of the prior art, the purpose of the present invention is to provide a wood fiber powder grinding device to at least partially solve the problems raised in the above background art.

[0005] The technical solution adopted by the present invention is as follows: A wood fiber powder grinding device is proposed, including: A grinding mill with a material chamber inside; A driving disk rotatably installed inside the grinding mill; Grinding rollers rotatably installed on the driving disk; A grinding lining plate fixedly installed on the grinding mill and the driving disk; Among them, the grinding lining plate includes a grinding ring fixed on the inner wall of the grinding mill and a grinding arc plate installed on the driving disk. The grinding arc plate is located inside the grinding ring. The grinding rollers are rotatably installed on the driving disk and are located between the grinding ring and the grinding arc plate. A grinding channel is formed between the grinding rollers and the grinding ring and the grinding arc plate, so that the wood fiber in the material chamber is ground by the grinding rollers and the grinding lining plate when passing through the grinding channel.

[0006] Further, the driving disk includes a first disk base, a base platform, and a second disk base. The first disk base is located at the inner lower end of the grinding ring. At the middle position of the top of the first disk base, the base platform is fixedly provided. At the top of the base platform, the second disk base is fixedly provided. A plurality of grooves are provided on the circumferential side of the base platform. On the surface of each groove, a grinding arc plate is fixedly installed. In the second disk base, a grinding roller is rotatably installed corresponding to each groove.

[0007] Further, the pulverizer is fixedly installed on the top of the support platform. A motor is fixedly installed on the top of the support platform. The output end of the motor is fixedly connected with a driving pulley. A driving shaft is fixedly provided at the bottom of the first disk base. A transmission belt is installed between the driving shaft and the driving pulley. The motor drives the first disk base to rotate in the pulverizer through the transmission of the driving pulley and the transmission belt.

[0008] Further, the grinding roller includes: A roller shaft rotatably installed on the second disk base; A plurality of grinding bars symmetrically distributed about the axis of the roller shaft; Wherein, a grinding disk is fixedly provided at the bottom of the roller shaft. A first grinding surface is provided on the bottom surface of the grinding disk. A second grinding surface is provided on the outer surface of the grinding bar.

[0009] Further, the grinding roller further includes a limit cover. The limit cover is sleeved on the outer side of the roller shaft and is located at the upper ends of the plurality of grinding bars. A rotatable adjusting disk is provided at the connection between the limit cover and the grinding bar. When the adjusting disk is configured to rotate around the roller shaft, it drives the plurality of grinding bars to move radially. An adjusting knob for adjusting the rotation of the adjusting disk is provided on the limit cover.

[0010] Further, a sliding groove is opened on the fitting surface between the grinding disk and the grinding bar. A limit convex block is fixedly provided on the grinding bar corresponding to the sliding groove. The limit convex block can slide radially in the sliding groove.

[0011] Further, a sealing strip is provided between every two adjacent grinding bars in the circumferential direction. The sealing strip is set as an elastic strip and can fill the gap according to the change of the gap between the grinding bars.

[0012] Further, the pulverizer includes a machine base and a machine cover. The machine base is fixed on the top of the support platform. The machine cover is fixedly installed on the top of the machine base. A feed window communicating with the material chamber is opened on the side wall of the machine cover. A waste window communicating with the material chamber is opened on the top of the machine cover. A discharge window is opened on the bottom side wall of the machine base.

[0013] Further, a blanking channel is provided between the first disc base and the machine base, a blanking cavity is provided in the machine base corresponding to the lower part of the first disc base, and the blanking cavity is communicated with the discharge window.

[0014] Further, a material guiding table is fixedly arranged in the blanking cavity. The material guiding table is arranged as a conical table, and the material guiding table is used to guide the materials in the blanking cavity to the discharge window.

[0015] Beneficial effects: In the present invention, by arranging a grinding arc plate on the driving disc, the grinding arc plate and the outer grinding ring together form a grinding liner to increase the contact area between the grinding roller and the grinding liner. The driving disc drives the grinding roller to move between the grinding ring and the grinding arc plate, so that the wood fibers in the material cavity are ground and crushed by the grinding roller and the grinding liner when passing through the grinding channel, thereby improving the grinding efficiency of the wood fibers. Description of the drawings

[0016] Figure 1 It is a schematic three-dimensional structure diagram of a wood fiber grinding and pulverizing device proposed by an embodiment of the present invention; Figure 2 It is a schematic internal structure diagram of a wood fiber grinding and pulverizing device proposed by an embodiment of the present invention; Figure 3 It is a schematic structural diagram of a driving disc and a grinding roller in a wood fiber grinding and pulverizing device proposed by an embodiment of the present invention; Figure 4 It is a schematic distribution structure diagram of the grinding rollers proposed by an embodiment of the present invention; Figure 5 It is a schematic internal structure diagram of the grinding roller proposed by an embodiment of the present invention.

[0017] Wherein, 01, support table; 02, motor; 021, driving pulley; 022, transmission belt; 10, grinder; 100, material cavity; 101, grinding channel; 102, blanking channel; 103, blanking cavity; 11, machine base; 111, discharge window; 12, machine cover; 121, feed window; 122, waste window; 20, driving disc; 21, first disc base; 211, driving shaft; 22, base platform; 23, second disc base; 30, grinding roller; 31, roller shaft; 310, chute; 311, grinding disc; 312, first grinding surface; 32, grinding strip; 321, second grinding surface; 322, limiting convex block; 323, sealing strip; 33, limiting cover; 331, adjusting knob; 34, adjusting disc; 40, grinding liner; 41, grinding ring; 42, grinding arc plate; 50, material guiding table.

[0018] The drawings are used to provide a further understanding of the embodiments and constitute a part of the specification. They are used to explain together with the present embodiments and do not constitute a limitation to the embodiments. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments without creative efforts shall fall within the scope of protection.

[0020] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments.

[0021] The pulverization of wood fiber is usually carried out in a six-axis pulverizer 10. The six-axis pulverizer 10 is equipped with six rotating rollers mounted on a rotatable disk base, and the rotating rollers cooperate with the grinding rings mounted on the inner wall of the machine body to grind the wood fiber into ultra-fine fiber powder with a mesh size of 20 to 325. Generally, the pulverizer 10 also needs to be equipped with a negative pressure suction device. An suction pipe is installed at the top of the machine body to suck out the wood fiber that has not been ground finely. However, due to the limitation of the area of the rotating rollers and the grinding rings, its grinding efficiency cannot be further improved. Therefore, the embodiments of the present invention provide a wood fiber pulverizing device, which mainly includes a pulverizer 10 and a driving disk 20, a grinding roller 30 and a grinding liner 40 installed inside the pulverizer 10.

[0022] As Figure 1 and Figure 2 shown, the pulverizer 10 is fixedly installed on the top of a support platform 01. A motor 02 is fixedly installed on the top of the support platform 01. Among them, the pulverizer 10 includes a machine base 11 and a machine cover 12. The machine base 11 is fixed on the top of the support platform 01, and the machine cover 12 is fixedly installed on the top of the machine base 11. A material chamber 100 is provided inside the machine base 11 and the machine cover 12. Generally, corresponding screwing structures are installed on the side walls of the machine base 11 and the machine cover 12, so that the machine base 11 and the machine cover 12 can be detachably connected to each other.

[0023] Further, a feed window 121 communicating with the material chamber 100 is formed on the side wall of the machine cover 12. The wood fiber to be pulverized is conveyed into the material chamber 100 through the feed window 121 by a feeding device (a screw feeder). A waste window 122 communicating with the material chamber 100 is formed on the top of the machine cover 12. A waste discharge pipe communicating with a negative pressure device is installed on the waste window 122 to suck and discharge the un-pulverized wood fiber in the material chamber 100. An outlet window 111 is formed on the bottom side wall of the machine base 11. The ultrafine fiber powder ground and pulverized in the material chamber 100 is discharged from the outlet window 111.

[0024] Further, the driving disk 20 is rotatably installed in the pulverizer 10, the grinding roller 30 is rotatably installed on the driving disk 20, and the grinding liner 40 is fixedly installed on the pulverizer 10 and the driving disk 20. Generally, mutually cooperating grinding grooves are provided on the outer wall of the grinding roller 30 and the inner wall of the grinding liner 40 for grinding the wood fiber into fine particles.

[0025] To increase the contact area between the grinding roller 30 and the grinding liner 40 and thereby increase the grinding efficiency of the wood fiber when the grinding roller 30 and the grinding liner 40 cooperate, the grinding liner 40 includes a grinding ring 41 fixed to the inner wall of the pulverizer 10 and a grinding arc plate 42 installed on the driving disk 20. The grinding arc plate 42 is located inside the grinding ring 41. The grinding roller 30 is rotatably installed on the driving disk 20 and is located between the grinding ring 41 and the grinding arc plate 42. A grinding channel 101 is formed between the grinding roller 30 and the grinding ring 41 and the grinding arc plate 42. When the motor 02 drives the driving disk 20 to rotate, the driving disk 20 drives the grinding roller 30 to move between the grinding ring 41 and the grinding arc plate 42, so that the wood fiber in the material chamber 100 is ground into fine particles when passing through the grinding channel 101 by the grinding roller 30 and the grinding liner 40.

[0026] Even further, as Figure 2 shown, the driving disk 20 includes a first disk base 21, a base platform 22, and a second disk base 23. The first disk base 21, the base platform 22, and the second disk base 23 are all made of stainless steel. Among them, the first disk base 21 and the base platform 22 are integrally formed, and the second disk base 23 is detachably installed on the top of the base platform 22 by bolts or other fasteners.

[0027] Among them, the first disk base 21 is located at the inner lower end of the grinding ring 41. A base platform 22 is fixedly provided at the middle position on the top of the first disk base 21. A plurality of grooves are provided on the circumferential side of the base platform 22, and a grinding arc plate 42 is fixedly installed on the surface of each groove. A second disk base 23 is fixedly provided on the top of the base platform 22. The second disk base 23 is used to install the grinding roller 30, and a grinding roller 30 is rotatably installed in each groove corresponding to the second disk base 23.

[0028] As Figure 3 andFigure 4 As shown, in some embodiments, six grooves are provided on the peripheral side of the same base 22 and are distributed in central symmetry. A grinding arc plate 42 is installed in each groove. The radian of the grinding arc plate 42 is close to π. A grinding roller 30 is provided in each groove. When the motor 02 drives the driving disk 20 to rotate in the flour mill 10, the grinding roller 30 contacts the wood fibers in the grinding channel 101 and also rotates relative to the driving disk 20. At this time, the grinding roller 30 can not only grind and crush the wood fibers between the grinding roller 30 and the grinding ring 41, but also grind and crush the wood fibers between the grinding roller 30 and the grinding arc plate 42. In this way, the contact area between the grinding roller 30 and the grinding liner 40 is increased, and the grinding efficiency of the wood fibers is further improved.

[0029] In the existing wood flour mills, the area between multiple grinding rollers 30 is empty, and wood fibers are likely to accumulate in this area, resulting in the wood fibers not being crushed by the grinding rollers 30 in time. The second disk seat 23 is located above the multiple grinding rollers 30, and the top of the second disk seat 23 can be configured as an arc-shaped structure. The second disk seat 23 guides the wood fibers, so that the wood fibers entering the material chamber 100 enter the grinding channel 101 under the guidance of the second disk seat 23, prompting the wood fibers to be ground and crushed by the grinding rollers 30.

[0030] As Figure 2 shown, the output end of the motor 02 penetrates through the support table 01 and is fixedly connected with a driving pulley 021. A driving shaft 211 is fixedly provided at the bottom of the first disk seat 21. The lower end of the driving shaft 211 penetrates through the support table 01 and is fixed with a driven pulley. A transmission belt 022 is installed between the driven pulley and the driving pulley 021. The motor 02 drives the first disk seat 21 to rotate in the flour mill 10 through the transmission of the driving pulley 021 and the transmission belt 022.

[0031] Furthermore, there is a blanking channel 102 between the first disk seat 21 and the machine base 11. A blanking chamber 103 is provided in the machine base 11 corresponding to the lower part of the first disk seat 21. The blanking chamber 103 is communicated with the discharge window 111. During operation, the motor 02 drives the first disk seat 21 to rotate in the flour mill 10 through the cooperation of the driving pulley 021, the transmission belt 022 and the driven pulley. When rotating, the grinding rollers 30 installed above the first disk seat 21 will grind and cooperate with the grinding ring 41 and the grinding arc plate 42 to further grind the wood fibers into ultra-fine fiber powder. The ground and crushed fiber powder will enter the blanking chamber 103 through the blanking channel 102 at the bottom of the grinding channel 101.

[0032] Furthermore, a material guiding table 50 is fixedly arranged in the blanking cavity 103. The material guiding table 50 is arranged as a conical table, and the material guiding table 50 is used to guide the materials in the blanking cavity 103 to the discharge window 111. In some embodiments, the conical surface on the material guiding table 50 can be arranged as an elliptical inclined conical surface, with the lower side of the elliptical inclined conical surface facing the discharge window 111 and the higher side arranged on the side opposite to the discharge window 111. In this way, the ultra-fine fiber powder in the blanking cavity 103 can be promoted to be discharged.

[0033] It can be understood that the discharge window 111 can also be externally connected to a negative pressure device, and the ground ultra-fine fiber powder is sucked and collected through a negative pressure suction pipe.

[0034] As Figure 4 and Figure 5 shown, in some embodiments, the grinding roller 30 includes a roller shaft 31 and grinding bars 32. Among them, the roller shaft 31 is rotatably installed on the second disc seat 23, and a plurality of grinding bars 32 are distributed in central symmetry around the axis of the roller shaft 31.

[0035] Further, in order to increase the grinding area, a grinding disc 311 is fixedly arranged at the bottom of the roller shaft 31, a first grinding surface 312 is arranged on the bottom surface of the grinding disc 311, and a second grinding surface 321 is arranged on the outer surface of the grinding bar 32.

[0036] In this way, when the roller shaft 31 rotates, not only the grinding bars 32 distributed on the circumferential side of the roller shaft 31 can cooperate with the grinding ring 41 and the grinding arc plate 42 through the second grinding surface 321 on their surfaces, but also the grinding disc 311 at the bottom of the roller shaft 31 can grind the wood fibers through the first grinding surface 312 on its bottom surface. Further, the grinding speed of the wood fibers is increased.

[0037] Furthermore, the grinding roller 30 further includes a limit cover 33. The limit cover 33 is sleeved outside the roller shaft 31 and is located at the upper ends of a plurality of grinding bars 32.

[0038] Among them, a rotatable adjustment disc 34 is arranged at the connection between the limit cover 33 and the grinding bar 32. The adjustment disc 34 is configured to drive a plurality of grinding bars 32 to move radially when rotating around the roller shaft 31, and an adjustment knob 331 for adjusting the rotation of the adjustment disc 34 is arranged on the limit cover 33.

[0039] In some embodiments, the adjusting disc 34 is a disc body made of stainless steel with threaded protrusions on one side facing the grinding strip 32. Correspondingly, the surface of the grinding strip 32 in contact with the adjusting disc 34 is provided with threaded grooves that cooperate with the threaded protrusions. When the adjusting disc 34 rotates around the center of the disc body, the position of the grinding strip 32 in the radial direction is adjusted through the cooperation of the threaded protrusions and the threaded grooves. This driving method is consistent with the driving principle of a three-jaw chuck. A uniformly distributed set of teeth is provided around the edge of the other side of the adjusting disc 34. The adjusting knob 331 is rotatably arranged on the limit cover 33 and can be rotated and adjusted by a tool. A tooth groove that cooperates with the teeth on the adjusting disc 34 is provided at the inner end of the adjusting knob 331. When the adjusting knob 331 rotates, it drives the adjusting disc 34 to rotate, thereby finely adjusting the distance of the radial movement of the grinding strip 32.

[0040] In this way, by adjusting the radial position of the grinding strip 32, the gap between the grinding strip 32 and the grinding ring 41 and the grinding arc plate 42 is controlled, thereby controlling the mesh number of the ground wood fiber powder.

[0041] Furthermore, in order to make the grinding strip 32 more stable during the adjustment process and also keep the grinding strip 32 stable during the grinding operation, a sliding groove 310 is provided on the fitting surface of the grinding disc 311 and the grinding strip 32. A limit protrusion 322 is fixedly provided on the grinding strip 32 corresponding to the sliding groove 310. The limit protrusion 322 can slide radially in the sliding groove 310. In this way, the upper part of the grinding strip 32 is restricted by the adjusting disc 34, and the lower part of the grinding strip 32 is restricted by the sliding groove 310, so that the working state can be kept stable, and the mesh number of the ground wood fiber can be adjusted according to requirements.

[0042] Even further, in order to prevent the wood fiber powder from entering the gaps between the grinding strips 32, a sealing strip 323 is provided between every two adjacent grinding strips 32 in the circumferential direction. The sealing strip 323 is set as an elastic strip and can fill the gap according to the change of the gap between the grinding strips 32.

[0043] In some embodiments, a sealing groove for installing the sealing strip 323 is provided on the side wall of the grinding strip 32. The sealing strip 323 is installed in the sealing groove between the two side walls and adaptively fills the gap between the grinding strips 32 according to the circumferential spacing of the grinding strips 32, ensuring that the wood fiber powder cannot enter between the grinding strips 32.

[0044] Combining the above embodiments, by providing the split-type grinding roller 30, the cooperation of multiple grinding strips 32 and the roller shaft 31 can grind the wood fiber on both the circumferential side and the bottom, improving the grinding efficiency of the wood fiber. Moreover, the grinding strips 32 can be independently disassembled and replaced. For the currently traditional integral grinding roller 30, if the grinding grooves on its surface are damaged, the cost of repair and replacement is relatively high, while the cost of repair and replacement of the split-type grinding strips 32 is relatively low.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above describes the implementation manners, and such description is not restrictive. What is shown in the drawings is only one of the implementation manners, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural manners and embodiments similar to the technical solution without departing from the purpose of creation, they shall fall within the protection scope.

Claims

1. A wood fiber grinding device, characterized in that, Comprising: A flour mill (10) with a material chamber (100) provided inside; A driving disk (20) rotatably installed inside the flour mill (10); A grinding roller (30) rotatably installed on the driving disk (20); A grinding liner (40) including a grinding ring (41) fixed to the inner wall of the flour mill (10) and a grinding arc plate (42) installed on the driving disk (20); Wherein, the grinding arc plate (42) is located inside the grinding ring (41), the grinding roller (30) is located between the grinding ring (41) and the grinding arc plate (42), and a grinding channel (101) for wood fibers is formed between the grinding roller (30) and the grinding ring (41) and the grinding arc plate (42).

2. The wood fiber grinding device according to claim 1, characterized in that: The driving disk (20) includes a first disk seat (21), a base (22) and a second disk seat (23). The first disk seat (21) is located at the lower inner side of the grinding ring (41). A base (22) is fixedly provided at the middle position of the top of the first disk seat (21). A second disk seat (23) is fixedly provided at the top of the base (22). A plurality of grooves are provided on the circumferential side of the base (22). The grinding arc plate (42) is fixedly installed on the surface of each groove. The grinding roller (30) is rotatably installed in each groove corresponding to the second disk seat (23).

3. The wood fiber grinding device according to claim 2, wherein: The flour mill (10) is fixedly installed on the top of a support table (01). A motor (02) is fixedly installed on the top of the support table (01). The output end of the motor (02) is fixedly connected with a driving pulley (021). A driving shaft (211) is fixedly provided at the bottom of the first disk seat (21). A transmission belt (022) is installed between the driving shaft (211) and the driving pulley (021). The motor (02) drives the first disk seat (21) to rotate inside the flour mill (10) through the transmission of the driving pulley (021) and the transmission belt (022).

4. The wood fiber grinding device according to claim 2, wherein: The grinding roller (30) includes: A roller shaft (31) rotatably installed on the second disk seat (23); A plurality of grinding bars (32) symmetrically distributed around the axis of the roller shaft (31); Wherein, a grinding disk (311) is fixedly provided at the bottom of the roller shaft (31). A first grinding surface (312) is provided on the bottom surface of the grinding disk (311). A second grinding surface (321) is provided on the outer surface of the grinding bar (32).

5. The wood fiber grinding device according to claim 4, wherein: The grinding roller (30) further includes a limit cover (33). The limit cover (33) is sleeved outside the roller shaft (31) and is located at the upper ends of the plurality of grinding bars (32). A rotatable adjusting disk (34) is provided at the connection between the limit cover (33) and the grinding bars (32). When the adjusting disk (34) is configured to rotate around the roller shaft (31), it drives the plurality of grinding bars (32) to move radially. An adjusting knob (331) for adjusting the rotation of the adjusting disk (34) is provided on the limit cover (33).

6. The wood fiber grinding device according to claim 5, characterized in that: A chute (310) is provided on the joint surface between the grinding disc (311) and the grinding strip (32). A limiting convex block (322) is fixedly provided at the position of the grinding strip (32) corresponding to the chute (310), and the limiting convex block (322) can slide radially in the chute (310).

7. The wood fiber grinding device according to claim 5, characterized in that: A sealing strip (323) is provided between every two adjacent grinding strips (32) in the circumferential direction. The sealing strip (323) is an elastic strip and can fill the gap according to the change of the gap between the grinding strips (32).

8. The wood fiber grinding device according to claim 3, characterized in that: The flour mill (10) includes a machine base (11) and a machine cover (12). The machine base (11) is fixed to the top of the support table (01), the machine cover (12) is fixedly installed on the top of the machine base (11), a feed window (121) communicating with the material chamber (100) is provided on the side wall of the machine cover (12), a waste window (122) communicating with the material chamber (100) is provided on the top of the machine cover (12), and a discharge window (111) is provided on the bottom side wall of the machine base (11).

9. The wood fiber grinding device according to claim 8, characterized in that: There is a blanking channel (102) between the first disc seat (21) and the machine base (11). A blanking chamber (103) is provided in the machine base (11) below the first disc seat (21), and the blanking chamber (103) communicates with the discharge window (111).

10. The wood fiber grinding device according to claim 9, characterized in that: A material guiding table (50) is fixedly provided in the blanking chamber (103). The material guiding table (50) is a conical table, and the material guiding table (50) is used for guiding the material in the blanking chamber (103) to the discharge window (111).

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