阅读说明：本技术 揉搓式棉秆去皮机 (Rubbing type cotton stalk peeling machine ) 是由 邹运梅 许仕林 全腊珍 全伟 杨博 胡广发 杨俊� 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种揉搓式棉秆去皮机,包括机架,所述机架上安装有用于托持输送棉秆的棉秆输送装置和用于将棉秆送到棉秆输送装置上的进料斗,所述棉秆输送装置的上方设有用于对棉秆输送装置上输送的棉秆进行揉搓的揉搓装置,所述揉搓装置包括揉搓板和安装在机架上并驱使揉搓板做圆周运动的驱动组件。该揉搓式棉秆去皮机具有结构简单、易于制作、成本低、去皮效率高、棉秆损失率低等优点。(The invention discloses a rubbing type cotton stalk peeling machine which comprises a rack, wherein a cotton stalk conveying device for supporting and conveying cotton stalks and a feed hopper for conveying the cotton stalks onto the cotton stalk conveying device are arranged on the rack, a rubbing device for rubbing the cotton stalks conveyed on the cotton stalk conveying device is arranged above the cotton stalk conveying device, and the rubbing device comprises a rubbing plate and a driving component which is arranged on the rack and drives the rubbing plate to do circular motion. The rubbing type cotton stalk peeling machine has the advantages of simple structure, easiness in manufacturing, low cost, high peeling efficiency, low loss rate of cotton stalks and the like.)

1. A rubbing type cotton stalk peeling machine is characterized in that: including frame (1), install on frame (1) and be used for holding cotton stalk conveyor (2) of carrying cotton stalk and be used for sending cotton stalk feeder hopper (3) on cotton stalk conveyor (2) with the cotton stalk, the top of cotton stalk conveyor (2) is equipped with and is used for rubbing device (4) that the cotton stalk of carrying was rubbed on cotton stalk conveyor (2), rub device (4) including rubbing board (41) and install in frame (1) and order about the drive assembly that rubbing board (41) was circular motion.

2. The kneading type cotton stalk peeler as claimed in claim 1, wherein: the driving assembly comprises a kneading support (43), a crank (44) and a rotary driving piece (42) installed on the rack (1), the rotary driving end of the rotary driving piece (42) is connected with the crank (44) and drives the crank (44) to rotate around a vertical axis, the kneading support (43) is connected to the crank (44), and the kneading plate (41) is installed on the kneading support (43).

3. The kneading type cotton stalk peeler as claimed in claim 2, wherein: the kneading plate (41) is arranged on the kneading support (43) in a mode of adjusting the installation height and the inclination angle through an adjusting mechanism, the adjusting mechanism comprises two groups of rod groups connected to the kneading plate (41), the two groups of rod groups are arranged at intervals along the conveying direction of the cotton stalk conveying device (2), each group of rod groups comprises more than two adjusting rods (45) connected to the kneading plate (41) and extending upwards, a through hole is formed in the kneading support (43) corresponding to each adjusting rod (45), each adjusting rod (45) penetrates through the corresponding through hole from bottom to top, a nut (46) which enables the adjusting rod (45) to be supported on the kneading support (43) and can adjust the supporting height of the adjusting rod (45) is connected to each adjusting rod (45) in a threaded fit mode, a telescopic spring (47) is further sleeved on each adjusting rod (45), and two ends of the telescopic spring (47) are respectively abutted against the kneading support (43) and the kneading plate (41) and block the kneading plate (41) towards the kneading support (41) 43) And (6) moving.

4. The kneading type cotton stalk peeler as claimed in claim 2, wherein: the lower surface of the kneading plate (41) is provided with a plurality of kneading teeth (411) protruding downwards.

5. The kneading type cotton stalk peeler as claimed in claim 4, wherein: the kneading plate (41) comprises a base plate (412) and a toothed plate (413) provided with the kneading teeth (411), the base plate (412) is connected to the kneading support (43), and the toothed plate (413) is detachably connected to the base plate (412) through a fastener.

6. The kneading type cotton stalk peeler as claimed in claim 1, wherein: the feeding hopper (3) comprises a shell (31), the shell (31) is provided with a sliding groove type channel (32) which is wide at the upper part and narrow at the lower part, the lower end of the sliding groove type channel (32) is a discharge hole of the feeding hopper (3), the kneading plate (41) extends into the discharge hole of the feeding hopper (3), and the distance between the kneading plate (41) and the bottom wall of the discharge hole changes between a value larger than the diameter of cotton stalks to be peeled and a value smaller than the diameter of the cotton stalks to be peeled when the driving component drives the kneading plate (41) to do circular motion.

7. The kneading type cotton stalk peeler as claimed in claim 1, wherein: the height difference between the lower surface of the kneading plate (41) and the conveying surface of the cotton stalk conveying device (2) is gradually reduced along the conveying direction of the cotton stalk conveying device (2).

8. The rubbing cotton stalk peeler according to any one of claims 1 to 7, wherein: the output of cotton stalk conveyor (2) still is equipped with sorting unit, sorting unit is including installing branch flitch (5) that just inclines to arrange in frame (1), the upper end that divides flitch (5) is located cotton stalk conveyor (2)'s output below, divide flitch (5) to be equipped with a plurality of sieve meshes (51) that are used for supplying the cotton stalk piece to drop.

9. The kneading type cotton stalk peeler according to claim 8, wherein: the rubbing type cotton stalk peeling machine is also provided with a material collecting box (6) which is positioned at the lower end of the material separating plate (5) and is used for collecting peeled cotton stalks.

10. The rubbing cotton stalk peeler according to any one of claims 1 to 7, wherein: the cotton stalk conveying device (2) comprises a flexible endless belt (21), a driven belt roller (22) and a driving belt roller (23) driven by a power mechanism to rotate, wherein the flexible endless belt (21) is wound on the driven belt roller (22) and the driving belt roller (23); the flexible endless belt (21) is a flexible belt with a non-planar conveying surface.

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a rubbing type cotton stalk peeling machine.

Background

Cotton is a widely planted commercial crop in China and is distributed in Yangtze river basin and Xinjiang. The cotton stalks are biomass resources generated after cotton harvesting, the yield is huge, and the total amount of the cotton stalks in the whole country in 2013 reaches 3149.5 ten thousand tons according to estimation. The cotton stalk can be used as a raw material to be applied to various industries such as activated carbon processing, fungus culture medium production, artificial board preparation and the like. Compared with other crop straws, the cotton straw has excellent mechanical properties, and the density and the structural characteristics of the cotton straw are closer to those of wood, so that the cotton straw is an ideal wood substitute material. Under the condition of increasing shortage of natural logs, the cotton stalks are used for replacing wood to produce various artificial boards, so that the method has strong practical significance.

With the vigorous support of agricultural machinery in the country in recent years, the agricultural machinery develops very rapidly, and machines related to peeling cotton stalks emerge successively. Most of the developed rubbing type cotton stalk peeling machines peel cotton stalks in a rolling and fluffing mode, which can destroy the integrity of the xylem of the cotton stalks, so that the peeled cotton stalks are in a broken strip shape and cannot meet the production requirement of high-strength recombined material raw materials; and the rubbing type cotton stalk peeling machine has the defects of high loss rate, low working efficiency, complex structure and high replacement and maintenance cost of core parts. According to the processing requirement of the recombined cotton stalk material, the processed object is the cut cotton stalk, the cut cotton stalk is peeled at the present stage, the technical research on a peeling machine which does not damage the xylem of the cotton stalk is still in the initial stage, and no machine can be put into use in the market.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provides the rubbing type cotton stalk peeling machine which is simple in structure, easy to manufacture, low in cost, high in peeling efficiency and low in cotton stalk loss rate.

In order to solve the technical problems, the invention adopts the following technical scheme:

a rubbing type cotton stalk peeling machine comprises a machine frame, wherein a cotton stalk conveying device used for supporting and conveying cotton stalks and a feed hopper used for conveying the cotton stalks to the cotton stalk conveying device are installed on the machine frame, a rubbing device used for rubbing the cotton stalks conveyed on the cotton stalk conveying device is arranged above the cotton stalk conveying device, and the rubbing device comprises a rubbing plate and a driving assembly installed on the machine frame and driving the rubbing plate to do circular motion.

As a further improvement of the above technical solution:

the driving assembly comprises a kneading support, a crank and a rotary driving piece arranged on the rack, the rotary driving end of the rotary driving piece is connected with the crank and drives the crank to rotate around a vertical axis, the kneading support is connected to the crank, and the kneading plate is arranged on the kneading support.

The cotton stalk rubbing device is characterized in that the rubbing plate is arranged on the rubbing support in a mode of adjusting the mounting height and the inclination angle through an adjusting mechanism, the adjusting mechanism comprises two groups of rod groups connected to the rubbing plate, the two groups of rod groups are arranged at intervals along the conveying direction of the cotton stalk conveying device, each rod group comprises more than two adjusting rods connected to the rubbing plate and extending upwards, a through hole is formed in the rubbing support corresponding to each adjusting rod, each adjusting rod penetrates through the corresponding through hole from bottom to top, a nut enabling the adjusting rod to be supported on the rubbing support and adjusting the supporting height of the adjusting rod is connected to each adjusting rod in a threaded fit mode, a telescopic spring is further sleeved on each adjusting rod, and two ends of the telescopic spring respectively abut against the rubbing support and the rubbing plate and block the rubbing plate to move towards the rubbing support.

The lower surface of the kneading plate is provided with a plurality of kneading teeth protruding downwards.

The rubbing plate comprises a base plate and a toothed plate provided with the rubbing teeth, the base plate is connected to the rubbing support, and the toothed plate is detachably connected to the base plate through a fastener.

The feeding hopper comprises a shell, the shell is provided with a sliding groove type channel which is wide at the upper part and narrow at the lower part, the lower end of the sliding groove type channel is a discharge hole of the feeding hopper, the kneading plate extends into the discharge hole of the feeding hopper, and the distance between the kneading plate and the bottom wall of the discharge hole changes between a value larger than the diameter of cotton stalks to be peeled and a value smaller than the diameter of the cotton stalks to be peeled when the kneading plate is driven by the driving assembly to do circular motion.

The height difference between the lower surface of the kneading plate and the conveying surface of the cotton stalk conveying device is gradually reduced along the conveying direction of the cotton stalk conveying device.

The output of cotton stalk conveyor still is equipped with sorting unit, sorting unit is including installing in the frame and the branch flitch that the slope was arranged, the upper end that divides the flitch is located cotton stalk conveyor's output below, divide the flitch to be equipped with a plurality of sieve meshes that are used for supplying the cotton stalk piece to drop.

The rubbing type cotton stalk peeling machine is also provided with a material collecting box which is positioned at the lower end of the material separating plate and is used for collecting peeled cotton stalks.

The cotton stalk conveying device comprises a flexible endless belt, a driven belt roller and a driving belt roller driven by a power mechanism to rotate, wherein the flexible endless belt is wound on the driven belt roller and the driving belt roller; the flexible endless belt is a flexible belt with a non-planar conveying surface.

Compared with the prior art, the invention has the advantages that:

the rubbing type cotton stalk peeling machine provided by the invention has the advantages that the cotton stalk conveying device is adopted to convey the cotton stalks, the rubbing plates are driven to do circular motion through the driving assembly of the rubbing device to rub the cotton stalks conveyed on the cotton stalk conveying device, the cotton stalks can be efficiently peeled, the peeling efficiency is improved, and the rubbing plates which do circular motion are matched with the cotton stalk conveying device to rub and peel the cotton stalks, so that the loss rate of the cotton stalks can be reduced, and the integrity of the cotton stalks is ensured. The rubbing type cotton stalk peeling machine also has the advantages of simple structure, easy manufacture and low cost.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of a rubbing type cotton stalk peeling machine.

FIG. 2 is a schematic view of the kneading type cotton stalk peeling machine.

Fig. 3 is a schematic perspective view of the kneading plate mounted on the kneading bracket.

Fig. 4 is a schematic perspective view of the hopper.

Fig. 5 is a schematic perspective view of the kneading plate extending into the discharge port of the hopper.

Fig. 6 is a schematic perspective view of the distributing plate and the collecting box.

Fig. 7 is a schematic perspective view of the cotton stalk conveying device.

Illustration of the drawings:

1. a frame; 2. a cotton stalk conveying device; 21. a flexible endless belt; 22. a driven belt roller; 23. a driving belt roller; 3. a feed hopper; 31. a housing; 32. a chute-type channel; 4. a kneading device; 41. a kneading board; 411. kneading and kneading teeth; 412. a substrate; 413. a toothed plate; 42. a rotary drive member; 43. rubbing the bracket; 44. a crank; 45. adjusting a rod; 46. a nut; 47. a tension spring; 5. a material distributing plate; 51. screening holes; 6. a material collecting box.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1 and 2, the rubbing type cotton stalk peeling machine of the present embodiment includes a frame 1, a cotton stalk conveying device 2 for supporting and conveying cotton stalks and a feeding hopper 3 for feeding the cotton stalks onto the cotton stalk conveying device 2 are installed on the frame 1, a rubbing device 4 for rubbing the cotton stalks conveyed on the cotton stalk conveying device 2 is installed above the cotton stalk conveying device 2, and the rubbing device 4 includes a rubbing plate 41 and a driving component installed on the frame 1 and driving the rubbing plate 41 to make a circular motion. This rub formula cotton stalk decorticator adopts cotton stalk conveyor 2 to carry the cotton stalk, drives through the drive assembly of rubbing device 4 and orders about rubbing board 41 and is circular motion and rub the cotton stalk of carrying on cotton stalk conveyor 2, can peel the cotton stalk by the efficient, improves and peels efficiency to rubbing board 41 and the cooperation of cotton stalk conveyor 2 that are circular motion are peeled the formula of rubbing the cotton stalk, can reduce the loss rate of cotton stalk, guarantee the integrality of cotton stalk. The rubbing type cotton stalk peeling machine also has the advantages of simple structure, easy manufacture and low cost.

In this embodiment, as shown in fig. 1 to 3, the driving assembly includes a kneading bracket 43, a crank 44 and a rotary driving member 42 mounted on the frame 1, the rotary driving member 42 has a rotary driving end connected to the crank 44 and drives the crank 44 to rotate around a vertical axis, the kneading bracket 43 is connected to the crank 44, and the kneading plate 41 is mounted on the kneading bracket 43. When the crank 44 is driven by the rotary driving member 42 to rotate, the crank 44 drives the kneading bracket 43 and the kneading plate 41 mounted on the kneading bracket 43 to do circular motion, so as to be matched with the conveying surface of the cotton stalk conveying device 2 to knead and peel cotton stalks. The driving assembly has the advantages of simple and compact structure, easy manufacture and assembly, low cost and stable and reliable work. The rotary driving member 42 is a motor, the crank 44 includes a turntable and a pin, the turntable is connected to an output shaft of the motor, an upper end of the pin is connected to a position of the turntable deviated from a rotation center thereof, and the kneading bracket 43 is connected to a lower end of the pin.

In this embodiment, the kneading plate 41 is mounted on the kneading support 43 by an adjusting mechanism in a manner that the mounting height and the inclination angle can be adjusted, and the feeding operation requirements of cotton stalks with different diameters and different lengths can be met by adjusting the mounting height and the inclination angle of the kneading plate 41. The adjusting mechanism comprises two groups of rod groups connected to the kneading plate 41, the two groups of rod groups are arranged at intervals along the conveying direction of the cotton stalk conveying device 2, each group of rod groups comprises more than two adjusting rods 45 which are connected to the kneading plate 41 and extend upwards, a through hole is formed in the kneading support 43 corresponding to each adjusting rod 45, each adjusting rod 45 penetrates through the corresponding through hole from bottom to top, a nut 46 which enables the adjusting rod 45 to be supported on the kneading support 43 and can adjust the supporting height of the adjusting rod 45 is connected to each adjusting rod 45 in a threaded fit mode, a telescopic spring 47 is further sleeved on each adjusting rod 45, and two ends of the telescopic spring 47 respectively abut against the kneading support 43 and the kneading plate 41 and block the kneading plate 41 from moving towards the kneading support 43. By adjusting the position of the nut 46, the relative height between each adjusting rod 45 and the kneading bracket 43 can be adjusted, and the nut 46 of the adjusting rod 45 in each rod group is correspondingly adjusted, so that the overall installation height and the inclination angle of the kneading plate 41 can be adjusted. The adjusting mechanism also enables the rubbing plate 41 to elastically float up and down, and when the cotton stalks are not rubbed, the rubbing plate 41 is forced to be positioned far away from the rubbing bracket 43 by the telescopic spring 47; when rubbing cotton stalks, the rubbing plate 41 can overcome the action of the expansion spring 47 and move upwards relative to the rubbing support 43 to increase the height difference between the rubbing plate and the conveying surface of the cotton stalk conveying device 2, so that the rubbing plate can adapt to cotton stalks with different diameters in the same batch, the rubbing force is basically consistent, the damage to the xylem of the cotton stalks is avoided, and the rubbing and peeling effects are improved.

In this embodiment, the lower surface of the kneading plate 41 is provided with a plurality of kneading teeth 411 protruding downward. The rubbing teeth 411 can increase the friction force on the cotton stalks, so that the cotton stalks can be efficiently and quickly peeled, the peeling effect is improved, and the cotton stalks can be easily and cleanly peeled.

In this embodiment, the kneading teeth 411 are conical teeth or cylindrical teeth, or the kneading teeth 411 are wavy conical teeth or circular conical teeth. It has good effect of kneading and peeling, and is easy to manufacture.

In this embodiment, the rubbing plate 41 includes a base plate 412 and a tooth plate 413 provided with rubbing teeth 411, the base plate 412 is connected to the rubbing support 43, and the tooth plate 413 is detachably connected to the base plate 412 through a fastener, so that the manufacturing and the dismounting are facilitated, and different tooth plates 413 can be replaced.

The kneading plate 41 of the present embodiment may be rectangular, square, disc-shaped, and the like.

In this embodiment, as shown in fig. 4 and 5, the feeding hopper 3 includes a housing 31, the housing 31 has a chute-type channel 32 with a wide top and a narrow bottom, the lower end of the chute-type channel 32 is a discharge port of the feeding hopper 3, the kneading plate 41 extends into the discharge port of the feeding hopper 3, and the distance between the kneading plate 41 and the bottom wall of the discharge port changes between larger than the diameter of the cotton stalk to be peeled and smaller than the diameter of the cotton stalk to be peeled when the driving assembly drives the kneading plate 41 to make circular motion. On one hand, the kneading plate 41 extends into the discharge port of the feed hopper 3 and can impact the cotton stalks in the feed hopper 3 to a certain degree, so that the cotton stalks can orderly fall on the cotton stalk conveying device 2 from the discharge port of the feed hopper 3, and the blockage and unsmooth discharge of the cotton stalks in the feed hopper 3 are prevented; on the other hand, when the driving assembly drives the kneading plate 41 to do circular motion, the distance between the kneading plate 41 and the bottom wall of the discharge port is changed between being larger than the diameter of the cotton stalk to be peeled and being smaller than the diameter of the cotton stalk to be peeled, so that the cotton stalk to be peeled is allowed to be output from the discharge port when the distance between the kneading plate 41 and the bottom wall of the discharge port is larger than the diameter of the cotton stalk to be peeled, and the cotton stalk to be peeled is prevented from being output from the discharge port when the distance between the kneading plate 41 and the bottom wall of the discharge port is smaller than the diameter of the cotton stalk to be peeled, so that the cotton stalk to be peeled intermittently falls on the cotton stalk conveying device 2 in batches. While realizing this purpose and effect, this kind of design need not set up the control mechanism of control cotton stalk output in addition, can improve simple structure compactness, reduce cost and reduce the control degree of difficulty.

Because the cotton stalks fall into the cotton stalk conveying device 2 in a sectional mode and are arranged disorderly and disorderly, the diameter of the rubbing plate 41 which does circular motion is preferably larger than or equal to that of the cotton stalks, the cotton stalks can be rubbed fully and repeatedly, and the peeling work is quickened to be completed quickly.

The chute-type channel 32 is suitable for feeding cotton stalks which are 10 mm-25 mm in diameter and 50 mm-150 mm in length after being cut into sections. The distance between the kneading plate 41 and the bottom wall of the discharge hole is changed by reasonably designing a track path for driving the kneading plate 41 to do circular motion by the driving assembly, and the distance is adjusted according to the diameter range of the cotton stalks to be peeled actually.

In this embodiment, the difference in height between the lower surface of the kneading plate 41 and the conveying surface of the cotton stalk conveyor 2 in the conveying direction of the cotton stalk conveyor 2 is gradually reduced. The cotton stalks can smoothly enter the rubbing area between the rubbing plate 41 and the cotton stalk conveying device 2 under the conveying of the cotton stalk conveying device 2, and along with the further conveying of the cotton stalks, the cotton stalks can be gradually clamped by the rubbing plate 41 and the conveying surface of the cotton stalk conveying device 2 to be rubbed efficiently and sufficiently, so that the peeling effect is ensured. The maximum height difference between the lower surface of the kneading plate 41 and the conveying surface of the cotton stalk conveying device 2 is larger than the diameter of the cotton stalks to be kneaded, and the minimum height difference between the lower surface of the kneading plate 41 and the conveying surface of the cotton stalk conveying device 2 is smaller than the diameter of the cotton stalks to be kneaded. In this embodiment, the maximum height difference between the lower surface of the kneading plate 41 and the conveying surface of the cotton stalk conveying device 2 is 15mm to 25mm, and the minimum height difference between the lower surface of the kneading plate 41 and the conveying surface of the cotton stalk conveying device 2 is 10mm to 20 mm.

In this embodiment, as shown in fig. 1, 2 and 6, the output end of the cotton stalk conveying device 2 is further provided with a sorting device, the sorting device comprises a material distributing plate 5 which is installed on the frame 1 and is obliquely arranged, the upper end of the material distributing plate 5 is located below the output end of the cotton stalk conveying device 2, and the material distributing plate 5 is provided with a plurality of sieve holes 51 for cotton stalk chips to fall. After cotton stalk and piece dropped to divide flitch 5 from cotton stalk conveyor 2's the skin back cotton stalk and piece, can follow the branch flitch 5 gliding of slope arrangement, this in-process cotton stalk piece can fall from sieve mesh 51, and the cotton stalk then continues to follow and divides flitch 5 gliding output to realize cotton stalk and the clastic screening of cotton stalk. Preferably, the sieve holes 51 are strip-shaped through holes with a width of 2mm to 5mm, and the gradient range of the material distributing plate 5 is 10 degrees to 30 degrees.

In this embodiment, the rubbing type cotton stalk peeling machine further has a material collecting box 6 located at the lower end of the material separating plate 5 for collecting peeled cotton stalks, so as to facilitate collection of the peeled cotton stalks.

In the embodiment, as shown in fig. 1, 2 and 7, the cotton stalk conveying device 2 comprises a flexible endless belt 21, a driven belt roller 22 and a driving belt roller 23 driven by a power mechanism to rotate, wherein the flexible endless belt 21 is wound on the driven belt roller 22 and the driving belt roller 23; the flexible endless belt 21 is a flexible belt whose conveying surface is non-planar. Because cotton stalks are irregular stalks due to branch nodes, the cotton stalk conveying device 2 adopts the flexible annular belt 21, is suitable for processing complex surfaces, can contact turning corners, and enables the cotton stalks to be peeled more cleanly. Meanwhile, the flexible endless belt 21 is a non-planar conveying surface, can grind cotton stalks, and is beneficial to improving the peeling efficiency and the peeling effect. In this embodiment, the discharge port of the hopper 3 is located on the center line of the driving belt roller 23, and a gap of 1mm to 5mm is maintained with the upper surface of the flexible endless belt 21, so as to prevent the hopper 3 from interfering with the operation of the flexible endless belt 21. The power mechanism for driving the driving belt roller 23 to rotate comprises a motor arranged on the frame 1, and the motor is connected with the driving belt roller 23 through a belt wheel transmission mechanism and drives the driving belt roller 23 to rotate. The flexible endless belt 21 adopts an abrasive belt, so that the cotton stalks are conveyed and simultaneously subjected to auxiliary grinding, and the peeling effect can be improved. The abrasive belt is preferably a zirconia-corundum abrasive belt.

In this embodiment, the distance between the driven belt roller 22 and the driving belt roller 23 is 500mm to 700mm, which can prevent the flexible endless belt 21 from easily loosening due to the excessively long distance between the driven belt roller 22 and the driving belt roller 23, and avoid the cotton stalk from being clamped by the kneading plate 41 and being unable to be kneaded due to insufficient supporting force applied to the cotton stalk. It is also possible to prevent the flexible endless belt 21 from being tightened too much due to the excessively short distance between the driven belt roller 22 and the driving belt roller 23, resulting in breakage of the cotton stalks when they are kneaded.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.