CN216399957U - Small-diameter log fluffing equipment - Google Patents

Abstract

The utility model belongs to the technical field of mechanical equipment, and particularly relates to small-diameter log fluffing equipment. It has solved current technical problem such as design is unreasonable. The minor-diameter log defibering equipment comprises a primary processing unit, a secondary processing unit and a secondary processing unit, wherein the primary processing unit is used for performing primary defibering processing on the minor-diameter logs to obtain primary flaky defibering materials with the width larger than the diameter of the minor-diameter logs and the thickness smaller than the diameter or the radius of the minor-diameter logs; the secondary processing unit is used for carrying out secondary defibering processing on the primary flaky defibering material to obtain a secondary flaky defibering material with the width larger than that of the primary flaky defibering material and the thickness smaller than that of the primary flaky defibering material; and the third-stage processing unit is used for carrying out third-stage defibering processing treatment on the second-stage flaky defibering material to obtain the third-stage flaky defibering material with the width larger than that of the second-stage flaky defibering material and the thickness smaller than that of the second-stage flaky defibering material. The utility model has the advantages that: realizes mechanical defibering and makes full use of the log.

Description

Small-diameter log fluffing equipment

Technical Field

The utility model belongs to the technical field of mechanical equipment, and particularly relates to small-diameter log fluffing equipment.

Background

In order to improve the utilization rate of raw wood materials, for example, chinese patent discloses CN106003275B, an automatic production device and method for manufacturing wood-based sectional materials by using shrubs as raw materials, which utilizes shrubs for optimized utilization, wherein the process discloses that shrubs after being defibered, dipped in glue and dried are rolled, paved and cut by a paving device.

The above patent does not disclose how to specifically defiber shrubs, and the present minor diameter log defibering apparatus has been developed in order to make full use of existing minor diameter logs (having diameters of about 30-110 mm).

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides a small-diameter log untwining device capable of solving the technical problems.

In order to achieve the purpose, the utility model adopts the following technical scheme:

this minor diameter log fluffing equipment includes:

the primary processing unit is used for carrying out primary defibering processing on the small-diameter logs to obtain primary flaky defibering materials with the width larger than the diameter of the small-diameter logs and the thickness smaller than the diameter or the radius of the small-diameter logs;

the secondary processing unit is used for carrying out secondary defibering processing on the primary flaky defibering material to obtain a secondary flaky defibering material with the width larger than that of the primary flaky defibering material and the thickness smaller than that of the primary flaky defibering material;

and the third-stage processing unit is used for carrying out third-stage defibering processing treatment on the second-stage flaky defibering material to obtain the third-stage flaky defibering material with the width larger than that of the second-stage flaky defibering material and the thickness smaller than that of the second-stage flaky defibering material.

In the above-mentioned minor diameter log fluffing device, the first-stage processing unit includes a first-stage unfolding wheel set, a first-stage flattening wheel set and a first-stage fluffing wheel set which are distributed in sequence in the feeding direction.

In the above-mentioned minor diameter log fluffing equipment, the first-stage processing unit further comprises a first-stage rolling wheel set located between the first-stage flattening wheel set and the first-stage fluffing wheel set.

In the small-diameter log fluffing device, the first-stage unfolding wheel group comprises a first-stage lower driving traction wheel and a first-stage upper driven unfolding wheel positioned above the first-stage lower driving traction wheel; the first-stage flattening wheel group comprises a first-stage lower driving flattening wheel and a first-stage upper driven flattening wheel positioned above the first-stage lower driving flattening wheel; the primary rolling wheel set comprises a primary lower driving rolling wheel and a primary upper driven rolling wheel positioned above the primary lower driving rolling wheel; the one-level is dredged the wheelset and is dredged the wheel including the initiative under the one-level to and be located the driven wheel of dredgeing on the one-level of the initiative top of dredgeing the wheel under the one-level, the one-level under initiative traction wheel, the one-level under initiative flattening wheel, the one-level under initiative rolling wheel and the one-level under initiative and dredged the wheel synchronous revolution.

In the minor-diameter log fluffing device, the primary flattening teeth on the primary lower driving flattening wheel and the primary flattening teeth on the primary upper driven flattening wheel are distributed in a vertically staggered manner; the primary untwining teeth on the primary lower active untwining wheel and the primary untwining teeth on the primary upper driven untwining wheel are distributed in a vertically staggered manner.

In the small-diameter log fluffing equipment, the first-stage upper driven unfolding wheel, the first-stage upper driven rolling wheel and the first-stage upper driven fluffing wheel are respectively connected with a first-stage oil pressure lifting type protection system to prevent material blockage.

In foretell path log fluffing equipment, second grade processing unit includes that second grade exhibition flat wheelset, second grade fluffing wheelset and two second grades roll the wheelset, rolls and distributes second grade fluffing wheelset and second grade exhibition flat wheelset in proper order with the direction of feed between the wheelset for two second grades.

In the minor-diameter log fluffing device, each secondary rolling wheel set comprises two secondary rolling wheels which are distributed in parallel up and down, and secondary rolling teeth on the two secondary rolling wheels are distributed in a staggered manner up and down; the secondary flattening wheel group comprises two secondary flattening wheels which are distributed in parallel up and down; the second-stage untwining wheel set comprises two second-stage untwining wheels which are distributed in an up-down parallel mode, and second-stage untwining teeth on the two second-stage untwining wheels are distributed in an up-down staggered mode.

In the small-diameter log fluffing equipment, a secondary rolling wheel positioned above, a secondary flattening wheel positioned above and a secondary fluffing wheel positioned above are respectively connected with a secondary oil pressure lifting protection system to prevent material blockage;

the second grade rolling wheel, second grade flattening wheel and second grade are dredged to the wheel and are rotated to a direction in step through first linkage drive mechanism below, and two liang of second grade rolling wheels that distribute from top to bottom, two second grade flattening wheels and two second grade are dredged and are connected through first reverse gear drive mechanism between the wheel respectively for its rotation opposite direction of two liang of second grade rolling wheels that distribute from top to bottom, its rotation opposite direction of two second grade flattening wheels, and its rotation opposite direction of two second grade are dredged to take turns.

In the small-diameter log defibering device, the three-stage processing unit comprises three defibering wheel sets and at least one three rolling flattening wheel set, which are sequentially distributed in the feeding direction.

In the minor-diameter log defibering device, the three-stage defibering wheel set comprises two three-stage defibering wheels which are distributed in parallel up and down; the three-level defibering teeth on the two three-level defibering wheels are distributed in a vertically staggered manner; the three-level rolling flattening wheel set comprises three groups and each group of three-level rolling flattening wheel set comprises two three-level rolling flattening wheels which are distributed in parallel from top to bottom.

In the small-diameter log fluffing equipment, the three-stage fluffing wheel positioned above and the three-stage rolling flattening wheel positioned above are respectively connected with a three-stage oil pressure lifting type protection system to prevent material blockage;

the three-level rolling flattening wheels positioned below and the three-level fluffing wheels positioned below synchronously rotate towards one direction through the second linkage transmission mechanism, and the two three-level fluffing wheels and the two pairwise vertically distributed three-level rolling flattening wheels are respectively connected through the second reverse gear transmission mechanism, so that the two pairwise vertically distributed three-level rolling flattening wheels have opposite rotating directions, and the two three-level fluffing wheels have opposite rotating directions.

Compared with the prior art, the utility model has the advantages that:

the small-diameter logs are fully utilized, so that the untwining is more thorough and the utilization rate of the logs is improved.

The fluffed sheet material has better flexibility performance, so that various applications of the subsequent fluffed sheet material are facilitated.

Drawings

Fig. 1 is a schematic front structure view of the fluffing device provided by the present invention.

Fig. 2 is a schematic view of the reverse structure of the fluffer of the present invention.

Fig. 3 is a schematic diagram of the width before and after fluffing provided by the present invention.

In the figure, a first-stage processing unit a, a first-stage unfolding wheel set a1, a first-stage lower driving traction wheel a10, a first-stage upper driven unfolding wheel a11, a first-stage flattening wheel set a2, a first-stage lower driving flattening wheel a20, a first-stage upper driven flattening wheel a21, a first-stage untwining wheel set a3, a first-stage lower driving untwining wheel a30, a first-stage upper driven untwining wheel a31, a first-stage rolling wheel set a4, a first-stage lower driving rolling wheel a40, a first-stage upper driven rolling wheel a41, a second-stage processing unit b, a second-stage flattening wheel set b1, a second-stage flattening wheel b10, a second-stage untwining wheel set b2, a second-stage untwining wheel b20, a second-stage rolling wheel set b3, a second-stage rolling wheel b30, a third-stage unfolding wheel set c2, a third-stage processing unit c, a third-stage untwining wheel set c1, a third-stage untwining wheel c10, a first-stage lifting type oil pressure lifting protection system d, a second-stage oil-pressure reverse-lifting protection system e, a first-reverse gear transmission mechanism f, a third-stage lifting-type oil-pressure-reverse-pressure-protection system f, a third-lifting protection system c, a third-lifting protection system, a third-lifting protection system c, a third-lifting protection system, a third-lifting protection system b1, a third-lifting protection system, a third-lifting wheel system, a third-lifting wheel b-lifting wheel system, a third-lifting wheel b-lifting wheel system, a third-lifting wheel system, a-lifting wheel b-lifting wheel system, a-lifting wheel, a third-lifting wheel, a third-lifting wheel, a third-lifting wheel, a-lifting wheel, a third-lifting, A second reverse gear transmission mechanism k, a frame 10, a lifting block 100, a lifting protection oil cylinder 101, a speed reducer 102 and a driving motor 103.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the minor diameter log defibering apparatus includes:

and the primary processing unit a is used for carrying out primary defibering processing on the small-diameter logs to obtain primary flaky defibering materials with the width larger than the diameter of the small-diameter logs and the thickness smaller than the diameter or the radius of the small-diameter logs.

For example, the whole log is subjected to primary defibering processing, and the log after being split into two halves or four halves or even more can be subjected to primary defibering processing, that is, the log can be a round log or a split log, and has more choices and wide application range so as to meet the processing requirements of logs with different small diameters.

Specifically, the primary processing unit a of this embodiment includes a primary unwinding wheel set a1, a primary flattening wheel set a2, and a primary untwining wheel set a3, which are sequentially distributed in the feeding direction, and further includes a primary rolling wheel set a4 located between the primary flattening wheel set a2 and the primary untwining wheel set a 3.

The small-diameter log is processed by a first-level unfolding wheel set a1, a first-level flattening wheel set a2, a first-level rolling wheel set a4 and a first-level fluffing wheel set a3, in the process, the small-diameter log is unfolded by first-level unfolding teeth of the first-level unfolding wheel set a1, the small-diameter log is processed by first-level unfolding teeth of the first-level flattening wheel set a2, and the small-diameter log is processed continuously by first-level rolling teeth of the first-level rolling wheel set a4 and first-level fluffing of the first-level fluffing wheel set a3 to obtain a first-level flaky fluffing material.

Further, the primary deployment wheel group a1 includes a primary lower driving traction wheel a10, and a primary upper driven deployment wheel a11 located above the primary lower driving traction wheel a 10; the primary flattening wheel group a2 comprises a primary lower driving flattening wheel a20 and a primary upper driven flattening wheel a21 positioned above the primary lower driving flattening wheel a 20; the primary rolling wheel group a4 comprises a primary lower driving rolling wheel a40 and a primary upper driven rolling wheel a41 positioned above the primary lower driving rolling wheel a 40; one-level fluffing wheelset a3 include initiative fluffing wheel a30 under the one-level to and be located the driven fluffing wheel a31 on the one-level of initiative fluffing wheel a30 top under the one-level, initiative traction wheel a10, initiative flattening wheel a20 under the one-level, initiative rolling wheel a40 under one-level and initiative fluffing wheel a30 synchronous rotation under one-level under initiative, synchronous rotation utilizes the chain to carry out power transmission, and utilize one-level reduction gear 104 and one-level driving motor 105 to carry out power input, accomplish synchronous rotation, ensure to be processed the material and continuously carry.

The primary lower driving traction wheel a10 is a plurality of inclined teeth which are evenly distributed on the circumference, and each inclined tooth is arranged along the length direction of the primary lower driving traction wheel a 10.

The structure of the driven unwinding wheel a11 on the primary stage can be seen in 201410599246.5, the structure of the bamboo chip slitting cutter.

Preferably, the primary flattening teeth on the primary lower driving flattening wheel a20 and the primary flattening teeth on the primary upper driven flattening wheel a11 of the present embodiment are distributed in a vertically staggered manner; similarly, the structure of the primary lower driving flattening wheel a20 and the primary upper driven flattening wheel a11 can be referred to the structure of 201410599246.5, bamboo slitting knife. The primary untwining teeth on the primary lower active untwining wheel a30 and the primary untwining teeth on the primary upper driven untwining wheel a31 are distributed in a vertically staggered manner, and the processed materials can be processed at different positions by utilizing the vertically staggered distribution, so that a very good untwining effect is achieved.

The tooth pitch of two adjacent tooth pitches of the first-stage unfolding teeth of the first-stage upper driven unfolding wheel a11 along the length direction of the first-stage upper driven unfolding wheel a11 is larger than the tooth pitch of two corresponding first-stage unfolding teeth, and the tooth pitch of two adjacent first-stage unfolding teeth (along the length direction of the wheel) is larger than the tooth pitch of two adjacent first-stage untwining teeth (along the length direction of the wheel) so as to continuously reduce the tooth pitch, thereby realizing processing untwining at different positions.

Preferably, the primary untwining teeth on the primary lower driving untwining wheel a30 and the primary untwining teeth on the primary upper driven untwining wheel a31 of the present embodiment may also be in a circular V-shaped tooth configuration.

Meanwhile, the primary lower driving rolling wheel a40 and the primary upper driven rolling wheel a41 of the primary rolling wheel group a4 of the present embodiment are embossing wheels, and the embossing shapes are diamond embossing or the like.

Because the log has a hard structure such as scabs, the primary upper driven unwinding wheel a11, the primary upper driven flattening wheel a21, the primary upper driven rolling wheel a41 and the primary upper driven untwining wheel a31 are respectively connected with the primary oil pressure elevating type protection system d to prevent the material from being stuck in order to prevent the material from being transported.

Specifically, the secondary processing unit b of the present embodiment includes a secondary flattening wheel set b1, a secondary untwining wheel set b2, and two secondary crushing wheel sets b3, and the secondary untwining wheel set b2 and the secondary flattening wheel set b1 are sequentially distributed between the two secondary crushing wheel sets b3 in the feeding direction. Further, each secondary rolling wheel group b3 comprises two secondary rolling wheels b30 which are distributed in parallel up and down, wherein secondary rolling teeth on the two secondary rolling wheels b30 of one secondary rolling wheel group b3 are distributed in a vertically staggered manner; the other secondary rolling roller set b3 has the secondary rolling roller b30 as an embossing roller, such as diamond embossing or the like.

The secondary rolling teeth are circular V-shaped teeth.

The secondary flattening wheel set b1 comprises two secondary flattening wheels b10 which are distributed in parallel up and down, secondary flattening teeth on the secondary flattening wheels b10 are circular V-shaped teeth, and secondary flattening teeth on the two secondary flattening wheels b10 are distributed in a vertically staggered manner;

the second-stage rolling teeth and the second-stage flattening teeth are distributed in a front-back staggered mode in the feeding direction, and the tooth pitch between every two adjacent second-stage flattening teeth is smaller than that of every two adjacent second-stage rolling teeth. The distance between two adjacent secondary crushing teeth (along the length direction of the wheel) is smaller than the pitch of two adjacent primary untwining teeth.

The second-stage untwining wheel group b2 comprises two second-stage untwining wheels b20 which are distributed in parallel up and down, and second-stage untwining teeth on the two second-stage untwining wheels b20 are distributed in a vertically staggered mode. The same advantages as described above for the misalignment.

Because the log has a hard structure such as scabs, the upper secondary rolling wheel b30, the upper secondary flattening wheel b10 and the upper secondary fluffing wheel b20 are respectively connected with a secondary oil pressure lifting type protection system e to prevent the material from being jammed.

Secondly, in order to realize stable conveying, the two-stage rolling wheel b30, the two-stage flattening wheel b10 and the two-stage loosening wheel b20 which are positioned below in the embodiment synchronously rotate in one direction through a first linkage transmission mechanism, and the two-stage rolling wheel b30, the two-stage flattening wheels b10 and the two-stage loosening wheels b20 which are distributed up and down in pairs are respectively connected through a first reverse gear transmission mechanism f, so that the two-stage rolling wheel b30 which are distributed up and down in pairs rotate in opposite directions, the two-stage flattening wheels b10 rotate in opposite directions, and the two-stage loosening wheels b20 rotate in opposite directions.

Specifically, the three-stage processing unit c of the present embodiment includes three stages of untwining wheel sets c1 and at least one stage of rolling and flattening wheel set c2, which are sequentially distributed in the feeding direction. Preferably, the three-level defibering wheel group c1 comprises two three-level defibering wheels c10 which are distributed in an up-down parallel manner; the three-level defibering teeth on the two three-level defibering wheels c10 are distributed in a vertically staggered manner; the three-stage rolling and flattening wheel sets c2 have three groups, and each group of three-stage rolling and flattening wheel set c2 respectively comprises two three-stage rolling and flattening wheels c20 which are distributed in parallel up and down. The third-stage untwining teeth are annular V-shaped teeth.

The pitch of the adjacent three-level defibering teeth (along the length direction of the wheel) is smaller than the pitch of the adjacent two-level defibering teeth (along the length direction of the wheel), so that the purposes of log width extension and flexibility enhancement are achieved.

Because the log has hard structures such as scabs and the like, in order to prevent the material from being conveyed, the upper three-stage untwining wheel c10 and the upper three-stage rolling and flattening wheel c20 are respectively connected with the three-stage oil pressure lifting type protection system g to prevent the material from being blocked;

and the lower three-level rolling flattening wheel c20 and the lower three-level defibering wheel c10 synchronously rotate in one direction through a first linkage transmission mechanism, the two three-level defibering wheels c10 and the two three-level rolling flattening wheels c20 which are distributed up and down are respectively connected through a second reverse gear transmission mechanism k, so that the rotating directions of the two three-level rolling flattening wheels c20 which are distributed up and down are opposite, and the rotating directions of the two three-level defibering wheels c10 are opposite.

The structure of the first-stage oil pressure lifting protection system d, the structure of the second-stage oil pressure lifting protection system e and the structure of the third-stage oil pressure lifting protection system g are the same, and the first-stage oil pressure lifting protection system d, the structure of the second-stage oil pressure lifting protection system e and the structure of the third-stage oil pressure lifting protection system g both comprise eight lifting blocks 100 capable of vertically lifting relative to the rack 10, for example, a first-stage driven unfolding wheel a11 is taken as an example, two ends of a first-stage driven unfolding wheel a11 are respectively connected with one lifting block 100 and the rack 10, the lifting block 100 is vertically and slidably connected with the rack 10, a lifting protection oil cylinder 101 connected with the top of the corresponding lifting block 100 is arranged at the top of the rack 10, and the lifting protection oil cylinder 101 is provided with an oil return pressure relief circulation loop, so that the lifting block can automatically lift and drive the corresponding first-stage driven unfolding wheel a11 to lift when a set pressure value is exceeded, and material blockage can be prevented.

Secondly, the structure of the first linkage transmission mechanism is the same as that of the second linkage transmission mechanism, and the chain is used as power to transmit so as to drive any one two-stage rolling wheel b30 to realize synchronous rotation, for example, the speed reducer 102 is arranged to be connected with the driving motor 103 to realize rotation of any one two-stage flattening wheel b 10.

The structure of the first reverse gear transmission mechanism f is the same as that of the second reverse gear transmission mechanism k, the first reverse gear transmission mechanism f comprises an upper helical gear and a lower helical gear meshed with the upper helical gear, and the rotation of, for example, the upper and lower two-stage rolling wheels b30 is opposite by utilizing the meshing of the upper helical gear and the lower helical gear so as to meet the conveying requirement. By adopting gear transmission, the power output can be enhanced, and the disassembly, assembly and maintenance can be facilitated.

The working principle of the embodiment is as follows:

s1, the small-diameter logs enter a primary processing unit a, and the primary processing unit a sequentially carries out unfolding, flattening, rolling and defibering on the small-diameter logs to obtain a primary flaky defibering material;

s2, the first-level flaky fluffing material enters a second-level processing unit b, and the second-level processing unit b sequentially performs rolling, flattening, fluffing and rolling processing on the first-level flaky fluffing material to obtain a second-level flaky fluffing material;

and S3, the second-level flaky fluffing material enters a third-level processing unit c, and the third-level processing unit c sequentially conducts fluffing, rolling and rolling processing on the second-level flaky fluffing material to obtain a third-level flaky fluffing material, namely, the small-diameter log fluffing manufacturing is completed.

The fluffing thickness space of the first-stage processing unit a, the second-stage processing unit b and the third-stage processing unit c is gradually reduced.

The untwining process is performed simultaneously in the above steps S1, S2, and S3.

In the above steps S1, S2 and S3, the fluffing thickness space is adaptively adjusted by the primary, secondary and tertiary oil pressure lifting protection systems to prevent material jamming.

Finally, as shown in fig. 3, the width of the transverse section of the sheet of the log with the diameter of 30mm after being processed by the device reaches 150mm, which is 5 times of the diameter.

Secondly, the width of the transverse section of the sheet of the log with the radius of 15mm after being processed by the device is as much as 45mm and is 3 times of the radius.

Through the analysis, the device of the embodiment can fully utilize the raw wood resource to achieve the purpose of reducing the development and application cost, for example, the device is applied to the industries such as floors.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims (12)

1. Minor diameter log fluffing equipment, its characterized in that, this equipment includes:

the primary processing unit (a) is used for carrying out primary defibering processing on the small-diameter logs to obtain primary flaky defibering materials with the width larger than the diameter of the small-diameter logs and the thickness smaller than the diameter or the radius of the small-diameter logs;

the secondary processing unit (b) is used for carrying out secondary defibering processing on the primary flaky defibering material to obtain a secondary flaky defibering material with the width larger than that of the primary flaky defibering material and the thickness smaller than that of the primary flaky defibering material;

and the third-stage processing unit (c) is used for carrying out third-stage defibering processing treatment on the second-stage flaky defibering material to obtain the third-stage flaky defibering material with the width larger than that of the second-stage flaky defibering material and the thickness smaller than that of the second-stage flaky defibering material.

2. The small diameter log defibering apparatus as claimed in claim 1, wherein the primary processing unit (a) comprises a primary unwinding wheel group (a1), a primary flattening wheel group (a2) and a primary defibering wheel group (a3) which are sequentially distributed in the feeding direction.

3. The small diameter log defibering apparatus as claimed in claim 2, wherein the primary processing unit (a) further comprises a primary crushing wheel group (a4) between the primary flattening wheel group (a2) and the primary defibering wheel group (a 3).

4. The small diameter log defibering apparatus as claimed in claim 3, wherein the primary unwinding wheel group (a1) comprises a primary lower driving traction wheel (a10), and a primary upper driven unwinding wheel (a11) located above the primary lower driving traction wheel (a 10); the primary flattening wheel set (a2) comprises a primary lower driving flattening wheel (a20) and a primary upper driven flattening wheel (a21) positioned above the primary lower driving flattening wheel (a 20); the primary rolling wheel set (a4) comprises a primary lower driving rolling wheel (a40) and a primary upper driven rolling wheel (a41) positioned above the primary lower driving rolling wheel (a 40); the one-level fluffing wheel group (a3) comprises a one-level lower driving fluffing wheel (a30) and a one-level upper driven fluffing wheel (a31) positioned above the one-level lower driving fluffing wheel (a30), wherein the one-level lower driving traction wheel (a10), the one-level lower driving flattening wheel (a20), the one-level lower driving rolling wheel (a40) and the one-level lower driving fluffing wheel (a30) synchronously rotate.

5. The small diameter log defibering apparatus as claimed in claim 4, wherein the primary flattening teeth of the primary lower driving flattening wheel (a20) and the primary flattening teeth of the primary upper driven flattening wheel (a11) are arranged in a vertically staggered manner; the primary untwining teeth on the primary lower driving untwining wheel (a30) and the primary untwining teeth on the primary upper driven untwining wheel (a31) are distributed in a vertically staggered manner.

6. The small diameter log fluffing apparatus of claim 4, wherein the primary driven uncoiling wheel (a11), the primary driven uncoiling wheel (a21), the primary driven rolling wheel (a41) and the primary driven fluffing wheel (a31) are connected to a primary hydraulic lifting protection system (d) respectively to prevent jamming.

7. The small diameter log defibering apparatus as claimed in claim 1, wherein the secondary processing unit (b) comprises a secondary flattening wheel set (b1), a secondary defibering wheel set (b2) and two secondary crushing wheel sets (b3), and the secondary defibering wheel set (b2) and the secondary flattening wheel set (b1) are sequentially distributed in the feeding direction between the two secondary crushing wheel sets (b 3).

8. The small diameter log fluffing apparatus of claim 7, wherein each secondary rolling wheel group (b3) comprises two secondary rolling wheels (b30) arranged in parallel up and down, wherein the secondary rolling teeth of the two secondary rolling wheels (b30) of one secondary rolling wheel group (b3) are arranged in a staggered up and down manner; the secondary flattening wheel set (b1) comprises two secondary flattening wheels (b10) which are distributed in parallel up and down; the second-stage untwining wheel set (b2) comprises two second-stage untwining wheels (b20) which are distributed in parallel up and down, and second-stage untwining teeth on the two second-stage untwining wheels (b20) are distributed in a vertically staggered mode.

9. The small diameter log fluffing apparatus according to claim 8, wherein the upper secondary rolling wheel (b30), the upper secondary flattening wheel (b10) and the upper secondary fluffing wheel (b20) are respectively connected to a secondary hydraulic lift protection system (e) to prevent jamming;

the second-stage rolling wheel (b30), the second-stage flattening wheel (b10) and the second-stage untwining wheel (b20) which are positioned below rotate in one direction synchronously through a first linkage transmission mechanism, the two pairs of second-stage rolling wheels (b30) which are distributed up and down, the two second-stage flattening wheels (b10) and the two second-stage untwining wheels (b20) are connected through a first reverse gear transmission mechanism (f) respectively, so that the two pairs of second-stage rolling wheels (b30) which are distributed up and down are opposite in rotating direction, the two second-stage flattening wheels (b10) are opposite in rotating direction, and the two second-stage untwining wheels (b20) are opposite in rotating direction.

10. The small diameter log defibering apparatus as claimed in claim 1, wherein the three-stage processing unit (c) comprises three defibering wheel sets (c1) and at least one three rolling/flattening wheel set (c2) sequentially distributed in the feeding direction.

11. The small diameter log defibering apparatus as claimed in claim 10, wherein the three-stage defibering wheel set (c1) comprises two three-stage defibering wheels (c10) disposed in parallel up and down; the three-level defibering teeth on the two three-level defibering wheels (c10) are distributed in a vertically staggered manner; the three-level rolling and flattening wheel sets (c2) are provided with three groups, and each group of three-level rolling and flattening wheel set (c2) respectively comprises two three-level rolling and flattening wheels (c20) which are distributed in an up-down parallel mode.

12. The small diameter log defibering apparatus according to claim 11, wherein the upper three-stage defibering wheel (c10) and the upper three-stage crushing and flattening wheel (c20) are respectively connected to a three-stage hydraulic lifting protection system (g) to prevent the material from being jammed;

the lower three-level rolling flattening wheel (c20) and the lower three-level defibering wheel (c10) synchronously rotate in one direction through a second linkage transmission mechanism, the two three-level defibering wheels (c10) and the two three-level rolling flattening wheels (c20) distributed up and down are connected through a second reverse gear transmission mechanism (k) respectively, so that the two three-level rolling flattening wheels (c20) distributed up and down are opposite in rotation direction, and the two three-level defibering wheels (c10) are opposite in rotation direction.

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