CN212669883U

CN212669883U - Pretreatment production line for preparing functional polyester blended yarn

Info

Publication number: CN212669883U
Application number: CN202021212401.0U
Authority: CN
Inventors: 陈可霸; 周金海
Original assignee: Danyang Yongtai Textile Co ltd
Current assignee: Danyang Yongtai Textile Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-03-09
Anticipated expiration: 2030-06-28

Abstract

The utility model relates to a pretreatment production line for preparing functional terylene blended yarn, which comprises a cotton opener and a cotton cleaner, wherein the outlet end of the cotton opener is connected with the inlet end of the cotton cleaner, the cotton opener comprises a feeding bin, a bale breaking device, a feeding bin, a cotton opening bin, a handle device and a cotton conveying curtain, the feeding bin is arranged above the feeding bin, the bale breaking device is arranged at the feeding bin, a vibrating sieve plate is arranged in the feeding bin, a vibrating motor is arranged at the bottom of the vibrating sieve plate, a collecting hopper is arranged at the lower end of the feeding bin, a first air pipe is connected at the bottom of the collecting hopper, the lower end of the first air pipe is connected with an impurity removing box, a first fan is connected with the impurity removing box, the handle device is arranged in the cotton opening bin, the cotton conveying curtain is arranged at the lower end of the cotton opening bin, a cotton guiding roller is arranged at one end of the cotton conveying curtain, the cotton fiber on the cotton conveying curtain is guided, the impurity removal effect is improved, and the quality of cotton sliver pretreatment is ensured.

Description

Pretreatment production line for preparing functional polyester blended yarn

Technical Field

The utility model belongs to the technical field of silver preliminary treatment equipment, concretely relates to function polyester fiber blended yarn preparation is with preliminary treatment production line.

Background

The terylene blended yarn is a yarn formed by processing cotton fibers through a spinning process, and is a blended yarn after stranding and twisting, before the preparation of the blended yarn, firstly, a cotton raw material needs to be unpacked and put into a cotton opener, compressed raw cotton is loosened into small cotton blocks or cotton bundles so as to be beneficial to the stable operation of mixing and impurity removal, and after the opening is finished, the cotton blocks are conveyed to a cotton cleaning box, and most of impurities, defects and short fibers which are not suitable for spinning on the raw cotton are removed. When the existing cotton opener works, the cotton bale needs to be unpacked manually, and the plastic protection bag coated on the surface of the cotton bale is removed, so that the consumption of manpower is greatly increased, the unpacking efficiency is low, the normal feeding of the cotton opener is influenced, and meanwhile, the workshop environment is influenced by the arrangement of the unpacked packaging bags everywhere; traditional cotton cleaning box can't effectively clear away impurity, broken seed in the cotton when the scutching to the production preparation in the meeting back process produces certain influence, and current scutcher can't handle floated short hair, makes the scutcher when using, can produce more short hair, can exert an influence to operating personnel's health on every side.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above-mentioned problem discloses a function polyester fiber blended yarn preparation is with preliminary treatment production line.

The specific technical scheme is as follows:

a pretreatment production line for preparing functional polyester blended yarn comprises a cotton opener and a cotton cleaner, wherein the outlet end of the cotton opener is connected with the inlet end of the cotton cleaner, the cotton opener comprises an upper material bin, a bale breaking device, a feeding bin, a cotton opening bin, a beater device and a cotton conveying curtain, the upper material bin is arranged above the feeding bin, the bale breaking device is arranged at the upper material bin, a protection bag on the surface of a cotton bale is removed by the bale breaking device, a first beater roller, a second beater roller and a third beater roller are arranged in the feeding bin, a vibrating screen plate is arranged in the feeding bin, one end of the vibrating screen plate is obliquely and downwards arranged towards one side of the cotton opening bin, two cotton feeding rollers are arranged on one side, close to the cotton opening bin, of the vibrating screen plate, a vibrating motor is arranged at the bottom of the vibrating screen plate, two ends of the bottom of the vibrating screen plate are arranged in the cotton feeding bin through a damping assembly, a collecting hopper is arranged, the bottom of the collecting hopper is connected with a first air pipe, the lower end of the first air pipe is connected with an impurity removing box, the impurity removing box is connected with a first fan, one end of the cotton opening bin is attached to one end of the vibrating sieve plate, the beater device is arranged in the cotton opening bin, dust rods are arranged on the inner wall of the cotton opening bin, which is positioned around the beater device, the cotton conveying curtain is horizontally arranged at the lower end of the cotton opening bin, one end of the cotton conveying curtain is provided with two cotton guide rollers, and the cotton guide rollers guide cotton fibers on the cotton conveying curtain into the scutcher;

the cotton cleaner comprises a cotton cleaning box, the cotton cleaning box is obliquely and upwards arranged, a conveying curtain is arranged in the cotton cleaning box, the conveying curtain comprises two conveying rollers and a plurality of curtain plates which are arranged on the two conveying rollers, the curtain plates are connected through a connecting belt, a gap exists between the curtain plates, a plurality of curtain nails are arranged on the surfaces of the curtain plates, a plurality of cams are arranged at the bottom of the upper half section of the curtain plates, and a collecting groove is arranged below the cams; the upper end of the cotton cleaning box is provided with an electrostatic generator, the lower end of the electrostatic generator is electrically connected with an electrostatic adsorption plate, the electrostatic adsorption plate is positioned above the conveying curtain and is parallel to the conveying curtain, and a discharge hole is formed in one end, positioned on the conveying curtain, of the cotton cleaning box.

Further, the unpacking device comprises two pushing cylinders, rotary seats, a driving motor, a movable roller, a scraper roller and a positioning roller, the number of the rotary seats is two, the centers of the two rotary seats are respectively and rotatably arranged on the side walls at the two sides of the upper bin, the movable roller and the scraper roller are respectively and rotatably arranged between the two ends of the two rotary seats, the side walls at the two sides of the cotton cleaning box are provided with two sliding groove openings with the same running track direction as that of the movable roller and the scraper roller, the two sliding groove openings are symmetrically arranged, two shaft ends of the movable roller and the scraper roller respectively penetrate through the two sliding groove openings to be rotatably connected with the two ends of the rotary seats, the number of the pushing cylinders is two, the two pushing cylinders are respectively and rotatably arranged on the side walls at the two sides of the upper bin, piston rods of the pushing cylinders are hinged with the upper ends of the rotary seats, the two pushing cylinders can simultaneously push the two rotary seats to rotate, and, the driving motor is fixedly arranged on one of the rotating seats, an output shaft of the driving motor is in transmission connection with the movable roller and the scraper roller through a belt pulley in a matching mode, and the positioning roller is arranged on one side of the movable roller.

Furthermore, a plurality of scraping claws formed by bending steel wires are arranged on the surface of the scraper roller.

Further, still including scraper blade, second tuber pipe, second fan, collecting box, the scraper blade sets up on the one end inner wall that is close to the scraper roller at last feed bin, and the scraper blade laminating setting on the front end of scraper blade and the scraper roller, and the front end of scraper blade is arranged and is equipped with a plurality of stopper, be the dislocation distribution between stopper and the scraper blade, the one end and the last feed bin of second tuber pipe are located the lateral wall on the scraper blade and are connected, and the second tuber pipe other end is connected with the collecting box, the collecting box sets up in opener top and is used for collecting broken wrapping bag, and one side of collecting box is connected the second fan.

Further, when the movable roller is located at the lowest end position in the upper storage bin, the movable roller and the positioning roller are located at the same horizontal position.

Furthermore, the upper end of the first beating roller is positioned between the movable roller and the positioning roller, and the rotating direction of the first beating roller is consistent with the rotating direction of the movable roller.

Furthermore, one side of the top of the feeding bin is provided with a feeding hole, and the feeding hole is obliquely arranged.

Furthermore, a plurality of pressing plates are arranged at two ends of the upper half section of the curtain plate, one end of each pressing plate is fixedly arranged on the inner wall of the cotton cleaning box, and the bottom of each pressing plate is of an arc-shaped structure and is attached to the upper surface of the curtain plate.

Further, the cam is located between two adjacent pressing plates.

The utility model has the advantages that:

(1) the utility model adopts the unpacking device at the feeding port of the cotton opener to unpack the packaging bag on the surface of the cotton bale, so that the manual tearing and unpacking are not needed, and the manpower consumption is greatly reduced; drop into the cotton bale from the feed inlet when using, on the cotton bale fell into the movable roll and the registration roller in the feed bin afterwards, through the rotation of scraper roller for the gripper tears the wrapping bag on cotton bale surface, it is rotatory through promoting the cylinder promotion roating seat, make the gripper drop from the gripper under with the stopper cooperation on the scraper blade, and inhale through the second tuber pipe under the effect of second fan convulsions and collect in the collection box in unison, rational in infrastructure, the practicality is high, the mixed and disorderly phenomenon in workshop has effectively been reduced.

(2) The utility model discloses drive the vibration sieve vibration through vibrating motor in the cotton storehouse of advancing of opener, effectively with the impurity on the cotton piece, broken seed shakes and falls and clears away, and in the impurity removal case is collected to the concentration, press the shutter plate of press plate to carrying the curtain through a plurality of cam cooperations in the cotton removal case and vibrate, make the cotton piece on the transport curtain under the vibration action, make impurity and broken seed drop, and fall to the collecting vat in from the gap between the shutter plate, and the electrostatic absorption board can adsorb short-staple on the cotton piece and clear away, the electrostatic absorption board can make cotton fiber be in the state of standing vertically simultaneously, thereby make impurity can change under the vibration action and drop, the impurity removal effect has further been improved, the quality of silver preliminary treatment has been guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the upper bin of the cotton opener of the utility model.

Fig. 3 is a top view of the conveying curtain of the present invention.

Description of the reference numerals

The cotton opener 1, the feeding bin 2, the chute port 21, the feeding port 22, the unpacking device 3, the pushing cylinder 31, the rotating seat 32, the driving motor 33, the belt pulley 331, the belt 332, the movable roller 34, the scraper roller 35, the scraping claw 351, the positioning roller 36, the scraping plate 37, the limiting block 371, the second air pipe 38, the collecting box 39, the second fan 391, the feeding bin 4, the first beater 41, the second beater 42, the third beater 43, the vibrating sieve plate 44 and the vibrating motor 45, the cotton picking device comprises a collecting hopper 46, a first air pipe 461, a impurity removing box 47, a first fan 48, a cotton feeding roller 49, a cotton opening bin 5, a dust rod 51, a cotton guiding roller 52, a beater device 6, a cotton conveying curtain 7, a cotton cleaner 8, a cotton cleaning box 9, a discharge hole 91, a conveying curtain 10, a conveying roller 101, a curtain plate 102, a curtain nail 1021, a connecting belt 103, an electrostatic generator 11, an electrostatic adsorption plate 12, a cam 13, a collecting tank 14, a cotton bale 15 and a pressing plate 16.

Detailed Description

For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The utility model discloses in the fixed connection who mentions, fixed setting is the general connected mode among the mechanical field, and welding, bolt and nut are connected and the screw connection is all can.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

As shown in fig. 1-3, a pretreatment production line for preparing functional terylene blended yarn, comprising a cotton opener 1 and a cotton picker 8, wherein the outlet end of the cotton opener 1 is connected with the inlet end of the cotton picker 8, the cotton opener 1 comprises a feeding bin 2, an unpacking device 3, a feeding bin 4, a cotton opening bin 5, a beater device 6 and a cotton conveying curtain 7, the feeding bin 2 is arranged above the feeding bin 4, the unpacking device 3 is arranged at the feeding bin 2, the unpacking device 3 is used for dismantling a protection bag on the surface of a cotton bale 15, a first beater 41 roller, a second beater 42 roller and a third beater 43 roller are arranged in the feeding bin 4, a vibrating screen plate 44 is arranged in the feeding bin 4, one end of the vibrating screen plate 44 is inclined downwards towards one side of the cotton opening bin 5, two cotton feeding rollers 49 are arranged on one side of the vibrating screen plate 44 close to the cotton opening bin 5, a vibrating motor 45 is arranged at the bottom of the vibrating screen plate 44, the lower end of the feeding bin 4 is provided with a collecting hopper 46, the bottom of the collecting hopper 46 is connected with a first air pipe 461, the lower end of the first air pipe 461 is connected with an impurity removing box 47, the impurity removing box 47 is connected with a first fan 48, one end of the cotton opening bin 5 is attached to one end of the vibrating screen plate 44, the cotton opening bin 5 is internally provided with the beater device 6, the inner wall of the cotton opening bin 5 around the beater device 6 is provided with a dust rod 51, the cotton conveying curtain 7 is horizontally arranged at the lower end of the cotton opening bin 5, and one end of the cotton conveying curtain 7 is provided with two cotton guide rollers 52; the scutcher 8 comprises a scutcher 9, a conveying curtain 10 is arranged in the scutcher 9, the conveying curtain 10 comprises two conveying rollers 101 and a plurality of curtain plates 102 arranged on the two conveying rollers 101, the curtain plates 102 are connected through a connecting belt 103, gaps exist among the curtain plates 102, a plurality of curtain nails 1021 are arranged on the surfaces of the curtain plates 102, a plurality of cams 13 are arranged at the bottoms of the upper half sections of the curtain plates 102, and a collecting groove 14 is arranged below the cams 13; the upper end of the cotton cleaning box 9 is provided with an electrostatic generator 11, the lower end of the electrostatic generator 11 is electrically connected with an electrostatic adsorption plate 12, the electrostatic adsorption plate 12 is positioned above the conveying curtain 10 and is parallel to the conveying curtain 10, and a discharge hole 91 is formed in one end of the cotton cleaning box 9, which is positioned at the conveying curtain 10.

Further, the unpacking device 3 comprises two pushing cylinders 31, two rotating seats 32, two driving motors 33, two movable rollers 34, two scraper rollers 35 and two positioning rollers 36, the centers of the two rotating seats 32 are respectively rotatably arranged on the two side walls of the upper bin 2, the two ends of the two rotating seats 32 are respectively rotatably arranged, the movable rollers 34 and the scraper rollers 35 are rotatably arranged between the two ends of the two rotating seats, the two side walls of the cotton cleaning box 9 are provided with two sliding groove openings 21 with the same direction as the moving track of the movable rollers 34 and the scraper rollers 35, the two sliding groove openings 21 are symmetrically arranged, so that the two shaft ends of the movable rollers 34 and the scraper rollers 35 respectively pass through the two sliding groove openings 21 to be rotatably connected with the two ends of the rotating seats 32, the pushing cylinders 31 are two and are respectively rotatably arranged on the two side walls of the upper bin 2, and the piston rods of the pushing cylinders 31 are hinged with the upper ends of the rotating seats, the driving motor 33 is fixedly arranged on one of the rotating bases 32, an output shaft of the driving motor 33 is in transmission connection with the movable roller 34 and the scraper roller 35 through a belt pulley 331 in cooperation with a belt 332, and the positioning roller 36 is arranged on one side of the movable roller 34.

Further, a plurality of scraping claws 351 formed by bending a steel wire are arranged on the surface of the scraper roller 35.

Further, still including scraper blade 37, second tuber pipe 38, second fan 391, collecting box 39, scraper blade 37 sets up on last feed bin 2 is close to the one end inner wall of scraper roller 35, and scraper blade 351 laminating setting on scraper blade 37's front end and the scraper roller 35, and the front end of scraper blade 37 is arranged and is equipped with a plurality of stopper 371, be the dislocation distribution between stopper 371 and the scraper blade 351, the one end of second tuber pipe 38 is connected with the lateral wall that last feed bin 2 is located on scraper blade 37, and the second tuber pipe 38 other end is connected with collecting box 39, collecting box 39 sets up at opener 1 top and is used for collecting broken wrapping bag, and one side of collecting box 39 is connected second fan 391.

Further, when the movable roller 34 is located at the lowermost position in the upper bin 2, the movable roller 34 is located at the same horizontal position as the positioning roller 36.

Further, the upper end of the first beater 41 roller is located between the movable roller 34 and the positioning roller 36, and the rotating direction of the first beater 41 roller is consistent with the rotating direction of the movable roller 34.

Further, a feeding hole 22 is formed in one side of the top of the feeding bin 2, and the feeding hole 22 is obliquely arranged.

Furthermore, a plurality of pressing plates 16 are arranged at two ends of the upper half section of the curtain plate 102, one end of each pressing plate 16 is fixedly arranged on the inner wall of the cotton picking box 9, and the bottom of each pressing plate 16 is of an arc-shaped structure and is attached to the upper surface of the curtain plate 102.

Further, the cam 13 is located between two adjacent pressing plates 16.

The working principle is as follows:

when the bale breaking device works, bale breaking treatment is carried out on the packing bags on the surface of the bale, manual tearing and bale breaking are not needed, and manpower consumption is greatly reduced; when the cotton bale feeding device is used, a cotton bale is fed from a feeding hole, then falls onto a movable roller and a positioning roller in an upper storage bin, the scraping claw tears a packaging bag on the surface of the cotton bale through rotation of the scraping roller, the rotating seat is pushed to rotate through the pushing cylinder, the scraping claw is enabled to fall off from the scraping claw under the matching of a limiting block on the scraping plate, the cotton bale is sucked into a collecting box through a second air pipe under the air suction effect of a second fan for uniform collection, and meanwhile, the movable roller moves towards the direction far away from the positioning roller; the feeding bin drives the vibrating sieve plate to vibrate through a vibrating motor, so that impurities and broken seeds on the cotton blocks fall off, and the cotton blocks are collected into an impurity removal box through a collecting hopper in a centralized manner;

the curtain board of carrying the curtain vibrates through a plurality of cam cooperation pressing plates in the cotton picking box for carry the cotton piece on the curtain to make impurity and broken seed drop under the vibration effect, and fall to the collecting vat in from the gap between the curtain board, and the electrostatic absorption board can adsorb short-staple on the cotton piece and clear away, and the electrostatic absorption board can make cotton fiber be in upright state simultaneously, thereby makes impurity can change under the vibration effect and drops.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a preliminary treatment production line is used in preparation of functional dacron mixed yarn, includes opener (1) and scutcher (8), the exit end of opener (1) and the entrance point connection of scutcher (8), its characterized in that, opener (1) includes feed bin (2), bale breaking device (3), feeding storehouse (4), bale breaking storehouse (5), hired roughneck device (6), defeated cotton curtain (7), it sets up in feeding storehouse (4) top to go up feed bin (2), goes up feed bin (2) department and sets up bale breaking device (3), bale breaking device (3) are demolishd the protection bag on cotton bale (15) surface, be equipped with first hired roughneck (41) roller, second hired roughneck (42) roller and third hired roughneck (43) roller in feeding storehouse (4), be equipped with vibration sieve (44) in feeding storehouse (4), the one end of vibration sieve (44) is to the slope of opening storehouse (5) one side and is set up downwards, two cotton feeding rollers (49) are arranged on one side, close to the cotton opening bin (5), of the vibrating screen plate (44), a vibrating motor (45) is arranged at the bottom of the vibrating screen plate (44), a collecting hopper (46) is arranged at the lower end of the feeding bin (4), a first air pipe (461) is connected to the bottom of the collecting hopper (46), an impurity removing box (47) is connected to the lower end of the first air pipe (461), a first fan (48) is connected to the impurity removing box (47), one end of the cotton opening bin (5) is attached to one end of the vibrating screen plate (44), the cotton opening bin (5) is internally provided with the cotton opening device (6), dust sticks (51) are arranged on the inner wall, located around the cotton opening bin (6), of the cotton opening bin (5), the cotton conveying curtain (7) is horizontally arranged at the lower end of the cotton opening bin (5), and two cotton guiding rollers (52) are arranged at one end of the cotton conveying; the cotton cleaner (8) comprises a cotton cleaning box (9), a conveying curtain (10) is arranged in the cotton cleaning box (9), the conveying curtain (10) comprises two conveying rollers (101) and a plurality of curtain plates (102) which are arranged on the two conveying rollers (101), the curtain plates (102) are connected through a connecting belt (103), gaps exist between the curtain plates (102), a plurality of curtain nails (1021) are arranged on the surface of the curtain plates (102), a plurality of cams (13) are arranged at the bottom of the upper half section of the curtain plates (102), and a collecting groove (14) is arranged below the cams (13); the upper end of clear cotton case (9) is equipped with electrostatic generator (11), and the lower extreme electricity of electrostatic generator (11) is connected with electrostatic adsorption board (12), the top that is located transport curtain (10) of electrostatic adsorption board (12) is parallel to transport curtain (10), and the one end that clear cotton case (9) are located transport curtain (10) is equipped with discharge gate (91).

2. The pretreatment production line for preparing functional terylene blended yarn according to claim 1, wherein the unpacking device (3) comprises a pushing cylinder (31), two rotating seats (32), a driving motor (33), a movable roller (34), a scraper roller (35) and a positioning roller (36), the centers of the two rotating seats (32) are respectively and rotatably arranged on the side walls at two sides of the upper bin (2), the movable roller (34) and the scraper roller (35) are respectively and rotatably arranged between two ends of the two rotating seats (32), two sliding notches (21) in the same direction as the moving track of the movable roller (34) and the scraper roller (35) are arranged on the side walls at two sides of the cotton cleaning box (9) and symmetrically arranged between the two sliding notches (21), so that two shaft ends of the movable roller (34) and the scraper roller (35) respectively pass through the two sliding notches (21) to be rotatably connected with two ends of the rotating seats (32), promote cylinder (31) quantity and be two and rotate respectively and set up on the both sides lateral wall of last feed bin (2), and the piston rod that promotes cylinder (31) is articulated with the rotation seat upper end, driving motor (33) are fixed to be set up on one of them roating seat (32), and the output shaft of driving motor (33) passes through belt pulley (331) cooperation belt (332) and is connected with the transmission between activity roller (34) and scraper roller (35), positioning roller (36) set up in one side of activity roller (34).

3. The pretreatment line for manufacturing a functional blended polyester yarn according to claim 2, wherein a plurality of scraping claws (351) formed by bending steel wires are arranged on the surface of the scraper roller (35).

4. The pretreatment production line for preparing functional terylene blended yarn according to claim 3, further comprising a scraper (37), a second air pipe (38), a second fan (391) and a collection box (39), wherein the scraper (37) is arranged on the inner wall of one end of the upper storage bin (2) close to the scraper roller (35), the front end of the scraper (37) is attached to the scraper claw (351) on the scraper roller (35), a plurality of limit blocks (371) are arranged at the front end of the scraper (37), the limit blocks (371) and the scraper claw (351) are distributed in a staggered manner, one end of the second air pipe (38) is connected with the side wall of the upper storage bin (2) on the scraper (37), the other end of the second air pipe (38) is connected with the collection box (39), the collection box (39) is arranged at the top of the opener (1) and is used for collecting broken packaging bags, and one side of the collection box (39) is connected with the second fan (391).

5. The pretreatment line for the preparation of functional polyester blended yarn according to claim 2, wherein the movable roller (34) and the positioning roller (36) are located at the same horizontal position when the movable roller (34) is located at the lowermost position in the upper hopper (2).

6. The pretreatment line for the preparation of functional polyester blended yarn according to claim 5, wherein the upper end of the first beater roll (41) is located between the movable roll (34) and the positioning roll (36), and the rotation direction of the first beater roll (41) is identical to the rotation direction of the movable roll (34).

7. The pretreatment line for preparing functional terylene blended yarn according to claim 1, wherein a feed inlet (22) is arranged at one side of the top of the upper bin (2), and the feed inlet (22) is arranged in an inclined manner.

8. The pretreatment line for preparing functional terylene blended yarn according to claim 1, wherein a plurality of pressing plates (16) are arranged at two ends of the upper half section of the curtain plate (102), one end of each pressing plate (16) is fixedly arranged on the inner wall of the cotton cleaning box (9), and the bottom of each pressing plate (16) is in an arc structure and is attached to the upper surface of the curtain plate (102).

9. The pretreatment line for the preparation of functional polyester blended yarn according to claim 8, wherein said cam (13) is located between two adjacent pressing plates (16).