CN216809046U

CN216809046U - Progressive axial flow cotton cleaner

Info

Publication number: CN216809046U
Application number: CN202220347225.4U
Authority: CN
Inventors: 林燕保; 曹卫
Original assignee: Yancheng King Da Textile Machine Manufacturing Co ltd
Current assignee: Yancheng King Da Textile Machine Manufacturing Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-06-24
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a progressive axial flow cotton cleaner, which comprises a shell, wherein the top of the shell is provided with a cotton collecting inlet, a rotary nozzle is arranged at the position where the cotton collecting inlet is connected with the inner cavity of the shell, the rotary nozzle is surrounded by a large dust cage, and the outlet at the bottom of the large dust cage is connected with a cotton cleaner component; the scutcher assembly comprises a cotton inlet, a first beater of a blade type structure and a second beater of a sawtooth type structure; a first dust removal cutter set is arranged on the front side of the lower end of the first beater, a second dust removal cutter set is arranged on the rear side of the lower end of the first beater, and a first carding roller is arranged right below the lower end of the first beater; a third dust removal cutter set is arranged on the front side of the lower end of the second beater, a fourth dust removal cutter set is arranged on the rear side of the lower end of the second beater, and a second carding roller is arranged right below the lower end of the second beater; a third carding roller is arranged between the second dust removing knife group and the third dust removing knife group. The utility model has the advantages of high impurity removal rate, low flower falling and no damage to fibers, and can effectively overcome the technical bottleneck that the quality of the subsequent spinning is influenced by the high fine impurities of the machine-harvested cotton which are difficult to remove.

Description

Progressive axial-flow cotton cleaner

Technical Field

The utility model relates to the technical field of textile equipment, in particular to a progressive axial flow cotton cleaner.

Background

In the past, cotton harvesting is mainly manual, but nowadays, because of shortage of labor and higher labor cost, mechanical cotton harvesting is replaced. However, because the mechanical cotton picking cannot be carried out selective grading and grading picking, the picked cotton has different maturity, fiber length and quality, and cotton knots and immature short fibers are increased due to the inclusion of the sterile seed cotton, particularly the impurities such as cotton leaves and fine impurities are not lower than the odd-high level. Therefore, the original opening and cleaning machine which is only limited to remove the large impurities cannot meet the impurity removal requirement of machine cotton picking. The main disadvantages are:

1. the impurities in the cotton cannot be removed. The cotton feeding mode of the original single axial flow cotton opener is that cotton enters from one end, a spiral guide plate is arranged on the inner side of the cotton opener, the cotton is wound for 4-6 circles in the cotton opener and then is led out from an outlet at the other end, and the cotton forms a ball shape due to winding. Although the cotton is coiled for 4-6 circles inside and can contact the dust removing knife for many times, the cotton is always only limited to removing impurities on the surface of the cotton and cannot remove the impurities wrapped inside the bulk cotton.

2. The cotton-feeding mode of the original biaxial flow cotton cleaning and opening machine is that the cotton enters from one side, and the two beating hands are used for cross beating, so that the large impurities sink and are removed by a relatively messy airflow, but the fine impurities are taken away together with the cotton by the subsequent cotton-collecting airflow. Therefore, it is also ineffective in removing the fine impurities contained in the mechanically harvested cotton.

3. The beater of the two machines is not limited to a blade, an iron bar type or a steel claw type, the knife edge is longer, the distance between the knife edge and a dust removing knife is larger, and fine impurities are difficult to remove. Meanwhile, the dedusting triangular rods used by the two machines are short in overall length, generally 25-30mm, even if the dedusting triangular rods have an effect on fine impurities, the dedusting triangular rods are easily and repeatedly brought back by backflow generated by a beater, and therefore the effect of removing the fine impurities is limited.

Therefore, how to effectively overcome the technical bottleneck that the quality of the subsequent spinning is affected by the difficulty in removing the high and fine impurities of the machine-harvested cotton is a subject to be intensively researched by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a progressive axial flow cotton cleaner, which has the following specific technical scheme:

a progressive axial flow scutcher comprises a shell, wherein a cotton collecting inlet is formed in the top of the shell, a powerful dust remover is arranged at the cotton collecting inlet, a rotary nozzle is arranged at the position where the cotton collecting inlet is connected with an inner cavity of the shell, the rotary nozzle is surrounded by a large dust cage fixed in the shell, and an outlet at the bottom of the large dust cage is connected with a scutcher assembly located at the lower part of the inner cavity of the shell;

the cotton cleaner assembly comprises a cotton inlet connected with a bottom outlet of the large dust cage, and a first beater and a second beater which are arranged at the lower part of the cotton inlet, wherein the first beater and the second beater are transversely arranged side by side and are driven by a motor to operate in the same direction; the first beater is of a blade type structure, and a plurality of blades are distributed on the surface of the first beater; the second beater is of a sawtooth structure, and the surface of the second beater is completely wrapped with sawtooth card clothing; a first dust removal cutter set is arranged on the front side of the lower end of the first beater, a second dust removal cutter set is arranged on the rear side of the lower end of the first beater, and a first carding roller is arranged right below the lower end of the first beater; a third dust removing cutter set is arranged on the front side of the lower end of the second beater, a fourth dust removing cutter set is arranged on the rear side of the lower end of the second beater, and a second carding roller is arranged right below the lower end of the second beater; a third carding roller is arranged between the second dust removing knife set and the third dust removing knife set, the three carding rollers are formed by card clothing, and the tops of the three carding rollers are opposite to the bottom rotating directions of the corresponding first beater arm and the second beater arm; the gauge formed between the first dust removal knife group and the first beater is a first zone impurity removal zone, the gauge formed between the first carding roller and the first beater is a second zone impurity removal zone, the gauge formed between the second dust removal knife group and the first beater is a third zone impurity removal zone, the gauge formed between the third dust removal knife group and the second beater is a fourth zone impurity removal zone, the gauge formed between the second carding roller and the second beater is a fifth zone impurity removal zone, the gauge formed between the fourth dust removal knife group and the second beater is a sixth zone impurity removal zone, and the six impurity removal zones are sequentially connected end to end; a cotton inlet at the head end of the first impurity removing area is communicated with the cotton inlet, a cotton outlet at the tail end of the sixth impurity removing area is communicated with a cotton outlet arranged outside the shell, and a cotton outlet fan is arranged at the cotton outlet;

the lower parts of the six impurity removing areas are integrally provided with a funnel-shaped impurity removing channel, a vertical impurity removing channel is formed between the outer wall of the large dust cage and the inner wall of the machine shell, and the vertical impurity removing channel is communicated with the funnel-shaped impurity removing channel downwards; the bottom outlet of the funnel-shaped impurity discharging channel is communicated with the transverse impurity discharging channel at the bottom of the inner cavity of the shell, and an impurity removing fan is arranged at the outlet of the transverse impurity discharging channel.

Compared with the prior art, the progressive axial flow cotton cleaner has the following advantages:

1. through gentle gradual loosening and edulcoration, especially to fine miscellaneous of grass leaf, flying dust etc. the effect is more showing and injure the fibre less.

2. The cotton is turned for three times in the middle under the action of the four-area dust removing knife, the opening effect is better, the impurity removal is more effective, white flowers do not fall off, and the yield is improved.

3. Impurities do not return after falling, repeated striking is avoided, efficiency is high, and effect is good.

4. The second beater is of a sawtooth card clothing type structure, and can effectively comb cotton finely and uniformly.

5. No holding, no opening, no damage to fiber.

Preferably, the motors are arranged at the lower part of the casing and are provided with two motors; belt wheels are respectively mounted at the corresponding output shafts of the two motors and the shaft ends of the first beater and the second beater, and the belt wheels on the first beater and the second beater are in transmission connection with the belt wheels of the motors corresponding to the first beater and the second beater respectively through belts.

Preferably, the cotton outlet at the tail end of the impurity removing area in the sixth area is provided with a cotton outlet channel, a convection port for supplying air is arranged at the lower side position of the connection position of the cotton outlet at the tail end of the impurity removing area in the sixth area, and the convection port is arranged on the shell.

Preferably, the cotton outlet channel is a right-angle channel with an upward outlet, and the bottom end of the corner of the right-angle channel is connected with a heavy object collecting box.

Preferably, the minimum distance between the blades on the first beater is 70-90 mm; the density of the card clothing on the second beater is not more than 10 needles per square inch at the most.

Preferably, four dust removal knife tackle all respectively include arc shape's mounting base and arrange install in several olecranon formula dust removal sword on the mounting base medial surface, olecranon formula dust removal sword include with the aluminum alloy seat that the mounting base is connected and install in the triangle rod iron that the side colluded is formed on aluminum alloy seat top.

Preferably, the distances between the top ends of the triangular steel bars of the first dust removing knife set, the second dust removing knife set, the third dust removing knife set and the fourth dust removing knife set and the tail ends of the bottoms of the corresponding beaters are gradually reduced from large to small in sequence.

Preferably, each of the four dust removing knife sets is provided with a mounting part which can be adjusted to rotate relative to the outer peripheral surface of the corresponding beater.

Preferably, the minimum distance between every two adjacent olecranon type dust removing knives in the four dust removing knife groups is 5-6 mm.

Preferably, the knife edge of the olecranon type dust removing knife is opposite to the rotating direction of the beater above the olecranon type dust removing knife.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of the progressive axial flow cotton cleaner of the utility model.

FIG. 2 is a schematic diagram showing the specific positions of six impurity removing regions according to the present invention.

Fig. 3 is a schematic structural diagram of the first beater according to the present invention.

FIG. 4 is a schematic structural diagram of a second beater according to the present invention.

Fig. 5 is a schematic view of the dust removing knife set of the present invention in a rotation adjustment state.

FIG. 6 is a schematic view of the structure of the olecranon type dust removing knife of the present invention.

In the figure: 1-a machine shell, 2-a cotton collecting inlet, 3-a powerful dust remover, 4-a rotary nozzle, 5-a large dust cage, 6-a cotton inlet, 7-a first beater, 8-a second beater, 9-a first dust removing knife group, 10-a second dust removing knife group, 11-a first carding roller, 12-a third dust removing knife group, 13-a fourth dust removing knife group, 14-a second carding roller, 15-a third carding roller, 16-a first zone impurity removing area, 17-a second zone impurity removing area, 18-a third zone impurity removing area, 19-a fourth zone impurity removing area, 20-a fifth zone impurity removing area, 21-a sixth zone impurity removing area, 22-a cotton outlet, 23-a funnel-shaped impurity removing channel, 24-a vertical impurity removing channel, 25-a lower foot conveying roller, 26-a convection port, 27-a mounting base, 28-an aluminum alloy seat, 29-a triangular steel bar and 30-a mounting part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The embodiment is as follows:

as shown in figure 1, the progressive axial flow cotton cleaner comprises a machine shell 1, wherein a cotton collecting inlet 2 is arranged at the top of the machine shell 1, a powerful dust remover 3 used for sucking cotton into the machine shell 1 is arranged at the cotton collecting inlet 2, a rotary nozzle 4 is arranged at the position where the cotton collecting inlet 2 is connected with an inner cavity of the machine shell 1, the rotary nozzle 4 is surrounded by a large dust cage 5 fixed inside the machine shell 1, and an outlet at the bottom of the large dust cage 5 is connected with a cotton cleaner component positioned at the lower part of the inner cavity of the machine shell 1.

According to the utility model, the rotary nozzle 4 is arranged, cotton is sprayed downwards and simultaneously rotates for 360 degrees, and the outer ring of the rotary nozzle 4 surrounds the large dust cage 5, so that firstly, the cotton can be separated from partial dust, short velvet, fine impurities and other impurities in the downward-spraying diffusion and rotation process and discharged from the sieve pores of the large dust cage 5, and the pre-impurity-removing effect is achieved; secondly, the airflow introduced by the powerful dust remover 3 can be discharged from the large dust cage 5 along the same trend, so that the air pressure in the machine shell 1 is reduced; thirdly, the cotton is sprayed in by a strong dust remover 3 through a rotary nozzle 4, so that the cotton can be freely beaten by a beater in a loose and non-holding state, thereby not only highly removing impurities, but also not damaging fibers.

The cotton cleaner assembly comprises a cotton inlet 6 connected with a bottom outlet of the large dust cage 5, and a first beater 7 and a second beater 8 which are arranged at the lower part of the cotton inlet 6, wherein the first beater 7 and the second beater 8 are transversely arranged side by side and are respectively driven by a motor to run in the same direction; the first beater 7 is of a blade type structure, and a plurality of blades are distributed on the surface of the first beater; the second beater 8 is of a sawtooth structure, and the surface of the second beater is completely wrapped with sawtooth card clothing.

As shown in fig. 3, the first beater 7 is of a blade type, the minimum distance between the blades is 70-90 mm, that is, the blade distance is about 80mm, and since the blades themselves are large and the space between the blades is also large, the first beater 7 can only roughly loosen cotton and can only separate and remove heavy and large impurities during operation.

As shown in fig. 4, the second beater 8 is a sawtooth type whose surface is completely wrapped with sawtooth card clothing, the tooth height is one seventh of the blade, the card clothing density is not more than 10 needles per square inch at most, usually 6 needles per square inch, the planting needle density is more than 20 times of the first beater 7, the cotton enters the second beater 8, the second beater 8 effectively grabs and combs the cotton with higher density, and can be uniformly distributed on the teeth points on the card clothing surface, the diffusion distribution area is slightly larger, the density is high, the cotton layer thickness is thick, the fine impurity can be exposed on the surface, and the dust removing knife can be easily removed.

Furthermore, two motors are arranged at the lower part of the machine shell 1; belt wheels are respectively installed on the corresponding output shafts of the two motors and the shaft ends of the first beater 7 and the second beater 8, and the belt wheels on the first beater 7 and the second beater 8 are in transmission connection with the belt wheels of the corresponding motors through belts.

A first dust removal knife set 9 is arranged on the front side of the lower end of the first beater 7, a second dust removal knife set 10 is arranged on the rear side of the lower end, and a first carding roller 11 is arranged right below the lower end; a third dust removing knife group 12 is arranged on the front side of the lower end of the second beater 8, a fourth dust removing knife group 13 is arranged on the rear side of the lower end, and a second carding roller 14 is arranged right below the lower end; a third carding roller 15 is arranged between the second dust removing knife group 10 and the third dust removing knife group 12, the three carding rollers are formed by covering card clothing, and the tops of the three carding rollers are opposite to the bottom rotating directions of the corresponding first beater 7 and the corresponding second beater 8.

As shown in fig. 2, the spacing formed between the first dust-removing knife group 9 and the first beater 7 is a first zone impurity removing zone 16, the spacing formed between the first carding roller 11 and the first beater 7 is a second zone impurity removing zone 17, the spacing formed between the second dust-removing knife group 10 and the first beater 7 is a third zone impurity removing zone 18, the spacing formed between the third dust-removing knife group 12 and the second beater 8 is a fourth zone impurity removing zone 19, the spacing formed between the second carding roller 14 and the second beater 8 is a fifth zone impurity removing zone 20, the spacing formed between the fourth dust-removing knife group 13 and the second beater 8 is a sixth zone impurity removing zone 21, and the six impurity removing zones are sequentially connected end to end; the cotton inlet at the head end of the first impurity removing area 16 is communicated with the cotton inlet 6, the cotton outlet at the tail end of the sixth impurity removing area 21 is communicated with a cotton outlet 22 arranged outside the machine shell 1, and a cotton outlet fan is arranged at the cotton outlet 22.

Further, each of the four dust removing blade sets includes an arc-shaped mounting base 27 and a plurality of olecranon type dust removing blades arranged on the inner side surface of the mounting base 27, as shown in fig. 6, each of the olecranon type dust removing blades includes an aluminum alloy base 28 connected to the mounting base 27 and a triangular steel bar 29 mounted on the top end of the aluminum alloy base 28 and forming a side hook. The knife edge (namely the side hook direction of the triangular steel bar 29) of the olecranon type dust removing knife is opposite to the rotating direction of the beater corresponding to the upper side of the olecranon type dust removing knife, so that impurities wrapped in cotton can be effectively removed, and the removed impurities directly fall to the lower foot conveying roller 25 and do not return to the beater.

Furthermore, the distances between the top ends of the triangular steel bars 29 of the first dust removing knife set 9, the second dust removing knife set 10, the third dust removing knife set 12 and the fourth dust removing knife set 13 and the tail ends of the bottoms of the corresponding beaters are gradually reduced from large to small in sequence, and the structure can effectively remove large impurities to small impurities in a gradual mode, and the effect is very obvious.

As shown in fig. 5, each of the four dust removing blade sets has a mounting portion 30 on the mounting base 27, which is rotatably adjustable with respect to the outer peripheral surface of the corresponding beater. Specifically, the knife edge angle of the olecranon type dust removing knife can be changed by moving the mounting base 27 and changing the mounting position of the mounting part 30, so that the purpose of changing the distance between the dust removing knife set and the bottom end of the corresponding beater arm is achieved.

According to the utility model, a first carding roller 11 is arranged between a first dust removing knife set 9 and a second dust removing knife set 10, a third carding roller 15 is arranged between the second dust removing knife set 10 and a third dust removing knife set 12, a second carding roller 14 is arranged between the third dust removing knife set 12 and a fourth dust removing knife set 13, and three impurity removing areas are respectively arranged between a first beater 7 and a second beater 8, so that six impurity removing areas are achieved. The first district edulcoration district 16 removes big miscellaneous, the first carding roller 11 of second district edulcoration district 17 catches and removes the medium-sized impurity, and with the cotton upset entering third district edulcoration district 18 removes medium-sized small-sized impurity, turn over into second beater 8 then, divide the comb to the cotton by third carding roller 15, and remove down and wrap up in cotton inside package leaf and large-scale impurity, then continue to do the upset to the cotton and make it get into fourth district edulcoration district 19 by the dirt removal sword edulcoration, again through the second carding roller 14 edulcoration of fifth district edulcoration district 20 and overturn cotton to sixth district edulcoration district 21 again, by big little gradually, get rid of the overwhelming majority of impurity, the edulcoration rate can exceed more than 60%.

Meanwhile, in the utility model, the minimum distance d (shown in figure 6) between every two adjacent olecranon type dust removing knives in the four dust removing knife groups is 5-6 mm, namely, the distance between the knives in the dust removing knife groups is correspondingly reduced, so that impurities can be effectively removed, the cotton partition is easy to fall, and long cotton fibers are not easy to hook.

The utility model can achieve the effects of high impurity removal, low white (cotton) falling and production rate improvement by designing a plurality of small-spacing dust removing knives and a plurality of carding rollers.

The lower parts of the six impurity removing areas are integrally provided with a funnel-shaped impurity removing channel 23, a vertical impurity removing channel 24 is formed between the outer wall of the large dust cage 5 and the inner wall of the machine shell 1, and the vertical impurity removing channel 24 is communicated with the funnel-shaped impurity removing channel 23 downwards; the narrow mouth end of the funnel-shaped impurity discharging channel 23 is provided with a lower foot conveying roller 25 near the upper position, the bottom outlet of the funnel-shaped impurity discharging channel 23 is communicated with the transverse impurity discharging channel arranged at the bottom of the inner cavity of the machine shell 1, an impurity removing fan is arranged at the outlet of the transverse impurity discharging channel and collects dust through induced air to directly suck the dust and impurities removed in an impurity removing area and the dust and impurities falling down from the vertical impurity discharging channel 24 in a direct suction mode and collect dust in a centralized mode.

The lower foot conveying roller 25 at the narrow end of the funnel-shaped impurity discharging passage 23 can lead dust impurities to the transverse impurity discharging passage, and meanwhile, dust collecting airflow transversely and smoothly circulates in the transverse impurity discharging passage, so that the dust collecting effect is ensured.

In order to further optimize the technical scheme of the embodiment, a cotton outlet channel is arranged between the cotton outlet at the tail end of the sixth impurity removing area 21 and the cotton outlet 22, a convection port 26 for supplying air is arranged at the lower side of the connection part of the cotton outlet channel and the cotton outlet at the tail end of the sixth impurity removing area 21, and the convection port 26 is arranged on the machine shell 1. The convection port 26 can make the cotton with impurities removed smoothly flow out to the cotton outlet 22 along with the airflow by supplementing the air.

Furthermore, the cotton outlet channel can be designed into a right-angle channel with an upward outlet, the bottom end of the corner of the right-angle channel is connected with a weight collecting box, if the cotton entering the cotton outlet channel contains a weight, the cotton entering the cotton outlet channel can be blocked by the right-angle channel at the corner and then falls into the weight collecting box under the action of self gravity, and the structure can further filter some heavy impurities by performing simple weight separation.

The utility model has more obvious effect and less fiber damage by opening and removing impurities mildly and progressively, especially for fine impurities such as grass leaves, flying dust and the like. The beater blade is firstly thinned and then compacted, the space of the dust removing blade is firstly enlarged and then reduced, so that impurities are not trapped, and the beater blade is particularly effective for high impurity content and large fine impurity content of machine-harvested cotton. The cotton is turned for three times in the middle under the action of the four-area dust removing knife, so that the opening effect is better, and the impurity removal is more effective.

In a word, the utility model has the advantages of high impurity removal rate, low flower falling and no damage to fibers, can effectively overcome the technical bottleneck that the quality of the subsequent spinning is influenced because the high-fine impurities of the machine-harvested cotton are difficult to remove, and provides a new technical device for improving the technical level of blowing-carding.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The progressive axial flow scutcher is characterized by comprising a machine shell (1), wherein a cotton collecting inlet (2) is arranged at the top of the machine shell (1), a powerful dust remover (3) is arranged at the cotton collecting inlet (2), a rotary nozzle (4) is arranged at the position where the cotton collecting inlet (2) is connected with the inner cavity of the machine shell (1), the rotary nozzle (4) is surrounded by a large dust cage (5) fixed inside the machine shell (1), and the bottom outlet of the large dust cage (5) is connected with a scutcher component positioned at the lower part of the inner cavity of the machine shell (1);

the cotton cleaner assembly comprises a cotton inlet (6) connected with a bottom outlet of the large dust cage (5), and a first beater (7) and a second beater (8) which are arranged at the lower part of the cotton inlet (6), wherein the first beater (7) and the second beater (8) are transversely arranged side by side and are driven by motors to rotate in the same direction; the first beater (7) is of a blade type structure, and a plurality of blades are distributed on the surface of the first beater; the second beater (8) is of a sawtooth structure, and the surface of the second beater is completely wrapped with sawtooth card clothing; a first dust removal knife set (9) is arranged on the front side of the lower end of the first beater arm (7), a second dust removal knife set (10) is arranged on the rear side of the lower end, and a first carding roller (11) is arranged right below the lower end; a third dust removing knife set (12) is arranged on the front side of the lower end of the second beater (8), a fourth dust removing knife set (13) is arranged on the rear side of the lower end, and a second carding roller (14) is arranged right below the lower end; a third carding roller (15) is arranged between the second dust removing knife set (10) and the third dust removing knife set (12), the three carding rollers are formed by card clothing, and the tops of the three carding rollers are opposite to the bottom rotating directions of the corresponding first beater arm (7) and the second beater arm (8); the spacing formed between the first dust removal knife group (9) and the first beater (7) is a first zone impurity removal zone (16), the spacing formed between the first carding roller (11) and the first beater (7) is a second zone impurity removal zone (17), the spacing formed between the second dust removal knife group (10) and the first beater (7) is a third zone impurity removal zone (18), the spacing formed between the third dust removal knife group (12) and the second beater (8) is a fourth zone impurity removal zone (19), the spacing formed between the second carding roller (14) and the second beater (8) is a fifth zone impurity removal zone (20), the spacing formed between the fourth dust removal knife group (13) and the second beater (8) is a sixth zone impurity removal zone (21), and the six impurity removal zones are sequentially connected end to end; a cotton inlet at the head end of the first impurity removing area (16) is communicated with the cotton inlet (6), a cotton outlet at the tail end of the sixth impurity removing area (21) is communicated with a cotton outlet (22) arranged outside the shell (1), and a cotton outlet fan is arranged at the cotton outlet (22);

the lower parts of the six impurity removing areas are integrally provided with a funnel-shaped impurity removing channel (23), a vertical impurity removing channel (24) is formed between the outer wall of the large dust cage (5) and the inner wall of the machine shell (1), and the vertical impurity removing channel (24) is communicated with the funnel-shaped impurity removing channel (23) downwards; the narrow mouth end of miscellaneous passageway (23) is arranged to the infundibulate and is leaned on the position and install a lower foot and carry roller (25), the bottom export of miscellaneous passageway (23) is arranged to the infundibulate with locating casing (1) inner chamber bottom transversely arrange miscellaneous passageway intercommunication, the exit of transversely arranging miscellaneous passageway is equipped with the edulcoration fan.

2. The machine according to claim 1, characterized in that said motors are mounted in the lower part of said casing (1) and are provided in two; belt wheels are respectively mounted at the corresponding output shafts of the two motors and the shaft ends of the first beater (7) and the second beater (8), and the belt wheels on the first beater (7) and the second beater (8) are in transmission connection with the belt wheels of the motors corresponding to the first beater (7) and the second beater (8) through belts.

3. The progressive axial flow scutcher according to claim 1, wherein a cotton outlet channel is arranged between a cotton outlet at the tail end of the impurity removing area (21) of the sixth area and the cotton outlet (22), a convection port (26) for supplementing air is arranged at the lower side of the connection part of the cotton outlet channel and the cotton outlet at the tail end of the impurity removing area (21) of the sixth area, and the convection port (26) is arranged on the machine shell (1).

4. The progressive axial flow scutcher of claim 3, wherein the cotton outlet channel is a right-angle channel with an upward outlet, and the bottom end of the right-angle channel at the corner is connected with a weight collection box.

5. The progressive axial flow scutcher according to claim 1, wherein the minimum blade-to-blade spacing on the first beater (7) is 70-90 mm; the density of the card clothing on the second beater (8) does not exceed 10 needles per square inch at most.

6. The progressive axial flow scutcher according to claim 1, wherein each of the four dust removing knife sets comprises an arc-shaped mounting base (27) and a plurality of olecranon type dust removing knives arranged and mounted on the inner side surface of the mounting base (27), and each of the olecranon type dust removing knives comprises an aluminum alloy base (28) connected with the mounting base (27) and a triangular steel bar (29) mounted on the top end of the aluminum alloy base (28) and forming a side hook.

7. The progressive axial flow scutcher according to claim 6, characterized in that the distances between the top ends of the triangular steel bars (29) of the first dust removing knife group (9), the second dust removing knife group (10), the third dust removing knife group (12) and the fourth dust removing knife group (13) and the bottom ends of the corresponding beaters are gradually increased in order.

8. The progressive axial flow scutcher according to claim 6, wherein each of said mounting bases (27) of the four sets of dusting knives is provided with a mounting portion (30) enabling its rotational adjustment with respect to the peripheral surface of the corresponding beater.

9. The progressive axial flow scutcher according to claim 6, wherein the minimum spacing between every two adjacent olecranon type dust removing knives in the four dust removing knife groups is 5-6 mm.

10. The progressive axial flow picker according to claim 6, wherein the knife edge of the olecranon type dust removing knife is opposite to the rotation direction of the corresponding beater above the olecranon type dust removing knife.