CN118046502A

CN118046502A - Pre-drying and forming system for recycled polyester fiber

Info

Publication number: CN118046502A
Application number: CN202410373836.XA
Authority: CN
Inventors: 王伟军; 泮颂海; 肖日荣; 杨历伟
Original assignee: Hangzhou Langping Textile Co ltd
Current assignee: Hangzhou Langping Textile Co ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-05-17

Abstract

The present application relates to the technical field of polyester fiber processing, and discloses a front-end drying and molding system for regenerated polyester fiber, including a crushing mechanism, a cleaning mechanism, a dehydration mechanism, a drying mechanism, and a hot-melt molding mechanism. In the present application, there is no inner wall for the crushed plastic fragments, and a more thorough cleaning can be achieved when cleaning at the cleaning mechanism. At the same time, after the washed plastic fragments are successively subjected to the two processes of centrifugal dehydration and hot-air drying, the possibility of moisture on the surface is reduced, thereby improving the dryness of the plastic fragments. Therefore, the discarded plastic bottles are successively subjected to the processes of crushing, cleaning, centrifugal dehydration, and hot-air drying, which improves the purity and dryness of the raw materials required for the preparation of polyester fibers, thereby improving the molding quality of the polyester fibers in the later stage. At the same time, after the plastic fragments are subjected to the hot-melt, molding, and pelletizing processes, the convenience of transportation and storage is also improved.

Description

Front drying and forming system for regenerated polyester fibers

Technical Field

The application relates to the technical field of polyester fiber processing, in particular to a front drying and forming system of regenerated polyester fibers.

Background

Polyester, also called polyester fiber, is mainly used for textile clothing, bottle sheets, films, etc., and as a synthetic fiber, polyester fiber consumes a great deal of fossil energy and generates a great deal of carbon emission, so that the production of polyester fiber has various negative effects on the environment and the ecosystem, and in order to reduce these negative effects, the recycling industry of polyester has been developed.

The raw materials of the regenerated polyester fiber are mainly waste plastic bottles, the plastic bottles are processed by a special process and are converted into renewable fibers, and compared with the traditional polyester fiber, the regenerated polyester fiber has the advantage of more environmental protection. In addition, the regenerated polyester fiber has better air permeability and heat retention, and can meet the requirements of various clothing.

However, in the prior process for regenerating polyester fibers, waste plastic bottles are generally crushed directly to form plastic particles, and then raw materials for preparing the polyester fibers are formed in a hot melting mode.

Disclosure of Invention

The application aims to provide a front-path drying and forming system for regenerated polyester fibers, which can improve the purity of raw materials required for preparing the polyester fibers, thereby improving the forming quality of the polyester fibers in the later period.

In order to achieve the above purpose, the present application provides the following technical solutions:

a system for drying and forming a precursor of regenerated polyester fiber, comprising:

The crushing mechanism comprises a first feed port, a crushing assembly and a first discharge port, and the crushing assembly is arranged between the first feed port and the first discharge port;

The cleaning mechanism comprises a second feed inlet, a second discharge outlet, a cleaning cavity, a spraying runner and a bidirectional stirring assembly, wherein the first discharge outlet is communicated with the second feed inlet through a conveying belt, the second feed inlet and the second discharge outlet are respectively communicated with the cleaning cavity, the bidirectional stirring assembly is arranged in the cleaning cavity, the spraying runner is arranged in the bidirectional stirring assembly, the spraying end of the spraying runner is arranged in the cleaning cavity, and the water inlet end of the spraying runner is communicated with an external water source;

The dehydration mechanism comprises a third feed port, a third discharge port, a dehydration cavity and a driving component, wherein the second discharge port is communicated with the third feed port through a conveying belt, the third feed port and the third discharge port are respectively communicated with the dehydration cavity, a plurality of dehydration holes are formed in the side wall of the dehydration cavity, and the driving component is used for driving the dehydration cavity to rotate;

The drying mechanism comprises a fourth feeding hole, a fourth discharging hole, a hot air component, a drying liner and a fixed cylinder, wherein the third discharging hole is communicated with the fourth feeding hole through a conveying belt, the fourth feeding hole and the fourth discharging hole are respectively communicated with the drying liner, the drying liner is arranged in the fixed cylinder, a hot air flow channel is arranged between the outer side wall of the drying liner and the inner side wall of the fixed cylinder, a plurality of hot air guide holes communicated with the hot air flow channel are formed in the outer side wall of the drying liner, and the air outlet of the hot air component is communicated with the hot air flow channel;

The hot melt forming mechanism comprises a fifth feed inlet, a hot melt assembly, an extrusion assembly and a grain cutting assembly, wherein the fourth feed inlet is communicated with the fifth feed inlet through a conveying belt, the fifth feed inlet is communicated with the hot melt assembly, the hot melt assembly is communicated with the extrusion assembly, the grain cutting assembly is arranged at the discharge end of the extrusion assembly, and the grain cutting assembly is used for cutting plastics extruded by the extrusion assembly into plastic particles.

Compared with the prior art, the technical scheme has the following beneficial technical effects:

1. The inner wall of the uncrushed waste plastic bottle is difficult to clean, and even if the uncrushed waste plastic bottle can be cleaned barely, the cleaning effect is poor, so that the impurity content is high, and the purity of raw materials required for preparing the polyester fiber in the later stage is affected. The broken plastic fragments have no inner wall, and can be thoroughly cleaned when being cleaned at the cleaning mechanism. Meanwhile, after the washed plastic fragments are subjected to two procedures of centrifugal dehydration and hot air drying in sequence, the possibility of moisture on the surfaces is reduced, so that the dryness of the plastic fragments is improved. Therefore, the procedures of crushing, cleaning, centrifugal dehydration and hot air drying are sequentially adopted for the waste plastic bottles, so that the purity and dryness of raw materials required for preparing the polyester fibers are improved, and the molding quality of the polyester fibers in the later stage is improved. Meanwhile, after the plastic fragments are subjected to hot melting, forming and granulating processes, the convenience in transportation and storage is improved.

2. The movable ring drives the abutting protrusion to move on the lifting ring strip in the rotating process, when the lifting piece contacts with the highest point of the lifting ring strip, the reciprocating ring descends to the lowest point, and in the process, the reciprocating ring drives the outer pressing ring to descend through the connecting rope, so that the first elastic piece is compressed, and the feeding bin descends. When the lifting piece leaves the highest point of the lifting ring strip and moves towards the lowest point of the lifting ring strip, the elastic force of the first elastic piece is released, the reciprocating ring is promoted to gradually rise to the highest point, and in the process, the reciprocating ring drives the outer pressing ring to rise through the linkage rope, so that the feeding bin rises. When the linkage ring continuously rotates under the drive of the second drive motor, the abutting projections intermittently pass through the highest point and the lowest point of the lifting ring strip, so that the feeding bin intermittently lifts, and the feeding bin generates a vibration effect.

3. The scraping hair on the scraping slag strip can scrape the residues on the crushing roller, the air flow of the slag blowing pipe can blow off the residues on the crushing roller, and the scraping hair and the air flow of the slag blowing pipe are matched together, so that the possibility of residual plastic fragments on the crushing roller is reduced.

4. After the second driving mechanism is started, the second driving mechanism drives the rotating shaft to rotate through the transmission system, the rotating shaft drives the rotating cylinder to rotate through the meshing relationship of the first driving gear, the first driven gear and the first internal tooth structure in the rotating process, and the direction of the force can be changed through the arrangement of the first driven gear, so that the rotating direction of the rotating cylinder is opposite to that of the rotating shaft, and therefore stirring blades on the rotating shaft and stirring blades on the rotating cylinder move relatively, and the stirring sufficiency for plastic fragments is improved.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings which are required to be used in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the description below are only embodiments of the application, and that other drawings can be obtained according to the drawings provided without inventive effort for a person skilled in the art.

FIG. 1 is a system block diagram of a front-end dry forming system embodying regenerated polyester fibers.

Fig. 2 is a cross-sectional view embodying a crushing mechanism.

Fig. 3 is an enlarged view showing a portion a in fig. 2.

Fig. 4 is a cross-sectional view embodying a cleaning mechanism.

Fig. 5 is an enlarged view showing a portion B in fig. 4.

Fig. 6 is a cross-sectional view embodying a dewatering mechanism.

Fig. 7 is a cross-sectional view showing a drying mechanism.

Fig. 8 is a cross-sectional view showing a hot melt molding mechanism.

Reference numerals illustrate: 101. a crushing box; 102. a first feed port; 103. a first discharge port; 104. a feeding bin; 105. an outer pressure ring; 106. a bearing cylinder; 107. a guide post; 108. a first elastic member; 109. a second driving motor; 110. a linkage ring; 111. a fixing ring; 112. a shuttle ring; 113. a linkage rope; 114. a guide bar; 1141. limiting the protrusion; 115. a drive gear; 116. a crushing roller; 1161. crushing teeth; 118. a striker plate; 119. a slag blowing pipe; 120. scraping slag strips; 121. scraping hair; 122. a material guide plate; 123. a vibrating cam; 124. a baffle; 201. a second feed inlet; 202. a second discharge port; 203. cleaning the cavity; 204. spraying a runner; 2041. a main flow passage; 2042. a jet flow passage; 205. a cleaning box; 206. a first housing; 2061. a cylinder; 2062. an end cap; 207. a first through port; 208. a second port; 209. a rotation shaft; 210. a rotary drum; 211. a second driving mechanism; 212. a transmission mechanism; 213. a first drive gear; 214. a first driven gear; 215. stirring blades; 216. a first water receiving pipe; 217. a rotary joint; 218. a runner ring groove; 219. a second water receiving pipe; 220. a water baffle; 221. a connecting rope; 222. a hoisting motor; 223. a rotating sleeve; 301. a dewatering box; 302. a second housing; 303. a third feed inlet; 304. a third discharge port; 305. a dewatering cavity; 306. a third through port; 307. a fourth through opening; 308. a dehydration hole; 309. a dewatering drum; 310. an airflow shaft; 311. a driving member; 312. a second drive gear; 313. a second driven gear; 314. an airflow channel; 315. a gas receiving pipe; 317. a jet air flow passage; 318. a partition plate; 401. a fourth feed inlet; 402. a fourth discharge port; 403. drying the inner container; 404. a fixed cylinder; 405. a support ring; 406. a hot air flow passage; 407. a hot air guide hole; 408. a blower; 409. an air guide pipe; 410. a heating coil; 411. a buffer plate; 501. a substrate; 502. a fifth feed inlet; 503. a hot melt cylinder; 504. a heating cable; 505. an extruder; 506. a first end; 5061. a connection hole; 5062. a cooling flow passage; 507. a second end; 5071. a second cooling ring groove; 5072. a discharge hole; 508. a first cooling ring groove; 509. a liquid inlet pipe; 510. a liquid outlet pipe; 511. a third driving mechanism; 512. cutting the blade; 5121. a shaft sleeve; 5122. a blade; 513. a yielding port; 6. and (3) a conveyor belt.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1, the system for drying and forming the regenerated polyester fiber in the previous path disclosed in the embodiment comprises a crushing mechanism, a cleaning mechanism, a dewatering mechanism, a drying mechanism and a hot melt forming mechanism. The crushing mechanism, the cleaning mechanism, the dewatering mechanism, the drying mechanism and the hot melt forming mechanism are respectively fixed on the ground through the frame, the installation height and the installation position between the crushing mechanism, the cleaning mechanism, the dewatering mechanism, the drying mechanism and the hot melt forming mechanism are set according to actual requirements, and the embodiment is not limited herein.

Referring to fig. 2, the crushing mechanism includes a crushing tank 101, a first feed port 102, a crushing assembly, a first discharge port 103, and a feed vibration assembly.

Referring to fig. 2, the crushing box 101 is a box structure having a cavity therein, the first feed inlet 102 is provided at the top of the crushing box 101, the first feed inlet 102 is communicated with the cavity of the crushing box 101, the first discharge outlet 103 is provided at the side wall of the crushing box 101, and the first discharge outlet 103 is communicated with the cavity of the crushing box 101.

Referring to fig. 2, the feed vibratory assembly includes a feed bin 104 and a vibratory mechanism.

Referring to fig. 2, the feeding bin 104 has a cylindrical structure with two open ends, the inner diameter of the feeding bin 104 is gradually reduced along the axial direction thereof, one end of the feeding bin 104 with a smaller inner diameter is inserted into the first feed inlet 102, and the other end extends toward a direction away from the first feed inlet 102, so that the feeding bin 104 is communicated with the cavity of the crushing box 101.

Referring to fig. 2, an outer pressure ring 105 is disposed at one end of the feeding bin 104 far away from the first feeding hole 102, and the inner side wall of the outer pressure ring 105 is welded and fixed with the outer side wall of the feeding bin 104. The top fixedly connected with bearing section of thick bamboo 106 at crushing case 101, bearing section of thick bamboo 106 is both ends open-ended drum structure, and bearing section of thick bamboo 106 and first feed inlet 102 coaxial setting, the part stack shell of feeding storehouse 104 is through bearing section of thick bamboo 106, and the tip that first feed inlet 102 was kept away from to feeding storehouse 104 is higher than bearing section of thick bamboo 106 to this makes outer clamping ring 105 be located the top of bearing section of thick bamboo 106.

Referring to fig. 2, a plurality of guide posts 107 are fixedly connected to an end surface of the support cylinder 106 away from the crushing box 101, and the plurality of guide posts 107 are circumferentially distributed. The guide post 107 passes through the outer pressure ring 105, and the outer pressure ring 105 is in sliding fit with the guide post 107. The guide column 107 is sleeved with a first elastic piece 108, the first elastic piece 108 is a compression spring, the first elastic piece 108 is located between the outer pressure ring 105 and the end face of the bearing barrel 106, and the vibration mechanism is used for driving the outer pressure ring 105 to reciprocate on the guide column 107.

Referring to fig. 2 and 3, the vibration mechanism includes a second driving motor 109, a link ring 110, a fixed ring 111, a reciprocating ring 112, and a link rope 113.

Referring to fig. 2 and 3, the fixing ring 111 is sleeved outside the supporting cylinder 106, and the inner side wall of the fixing ring 111 is welded and fixed with the outer side wall of the supporting cylinder 106. The linkage ring 110 is rotatably connected to the outside of the fixed ring 111 through a bearing (not shown), and the reciprocating ring 112 is disposed outside of the supporting cylinder 106 and below the linkage ring 110, and the reciprocating ring 112 is slidably engaged with the supporting cylinder 106. Specifically, fixedly connected with gib 114 outside bearing section of thick bamboo 106, the length direction of gib 114 is parallel with the axial of bearing section of thick bamboo 106 to gib 114 is the circumference along the lateral wall of bearing section of thick bamboo 106 and is equipped with at least three, and gib 114 is located the below of link ring 110, is equipped with the guide way along its axial on the inside wall of link ring 112, and the quantity of guide way and the quantity one-to-one of gib 114, gib 114 are located the guide way, sliding fit between gib 114 and the guide way. In order to prevent the shuttle ring 112 from falling off the guide strips 114, a limiting projection 1141 is fixedly connected to the end of each guide strip 114 facing the crushing box 101, respectively.

Referring to fig. 2, a plurality of link ropes 113 are provided around the support cylinder 106, and one end of each link rope 113 is connected to the outer pressure ring 105, and the other end is connected to the reciprocating ring 112 after passing through the fixing ring 111. A lifting ring bar (not shown) is fixedly connected to the side of the reciprocating ring 112 facing the linkage ring 110, and the side of the lifting ring bar facing the linkage ring 110 is wavy. An abutting protrusion (not shown) is fixedly connected to a side of the linkage ring 110 facing the reciprocating ring 112, and the abutting protrusion abuts against the wavy surface of the lifting ring strip.

Referring to fig. 2 and 3, a bracket is fixedly connected to the top wall of the crushing box 101, a second driving motor 109 is mounted on the bracket, a driving gear 115 is connected to the output shaft of the second driving motor 109, an external tooth structure is provided on the outer side wall of the linkage ring 110, and the driving gear 115 is meshed with the external tooth structure. The second drive motor 109 drives the coupling ring 110 to rotate through the meshing relationship between the drive gear 115 and the external gear structure.

The linkage ring 110 drives the abutting protrusion to move on the lifting ring strip in the rotating process, when the lifting piece contacts with the highest point of the lifting ring strip, the reciprocating ring 112 descends to the lowest point, and in the process, the reciprocating ring 112 drives the outer pressing ring 105 to descend through the linkage rope 113, so that the first elastic piece 108 is compressed, and the feeding bin 104 descends. When the lifting member leaves the highest point of the lifting ring strip and moves towards the lowest point of the lifting ring strip, the elastic force of the first elastic member 108 is released, so that the reciprocating ring 112 is gradually lifted to the highest point, and in the process, the reciprocating ring 112 drives the outer pressure ring 105 to lift through the linkage rope 113, so that the feeding bin 104 is lifted. When the linkage ring 110 is continuously rotated by the second driving motor 109, the interference protrusions intermittently pass through the highest point and the lowest point of the lifting ring bar, so that the feeding bin 104 is intermittently lifted, thereby generating a vibration effect of the feeding bin 104.

The waste plastic bottles are put into the feeding bin 104 through the conveying belt 6, and the vibrating feeding bin 104 can enable the waste plastic bottles in the feeding bin 104 to gradually enter the crushing box 101, so that the possibility of shutdown caused by blockage of the waste plastic bottles in the feeding bin 104 is reduced, and the working smoothness of the whole system is improved.

Referring to fig. 2, the crushing assembly is provided in the crushing box 101 and between the first feed opening 102 and the first discharge opening 103, specifically, the first feed opening 102 is located above the crushing assembly and the first discharge opening 103 is located below the crushing assembly. The crushing assembly comprises crushing rollers 116, the crushing rollers 116 being rotatably connected within the crushing tank 101.

Referring to fig. 2, two crushing rollers 116 are arranged side by side, crushing teeth 1161 are respectively arranged on the surface of each crushing roller 116, and the crushing teeth 1161 on the two crushing rollers 116 are staggered, that is, one crushing tooth 1161 on one crushing roller 116 extends into a space between the two crushing teeth 1161 on the other crushing roller 116. Specifically, the structure and arrangement of the two crushing rollers 116 are consistent with those of the roller shafts of the crusher in the prior art, and will not be described herein.

Referring to fig. 2, a first driving mechanism (not shown) for driving the two crushing rollers 116 to rotate relatively is provided outside the crushing box, and the form of the first driving mechanism is not limited as long as the first driving mechanism can drive the two crushing rollers 116 to rotate relatively, for example, the first driving mechanism can be two motors, each motor corresponds to each crushing roller 116 one by one, so as to drive the two crushing rollers 116 to rotate relatively.

Referring to fig. 2, the projection of the first feed opening 102 is located between two crushing rollers 116, and the waste plastic bottles from the feed bin 104 can fall just between the two crushing rollers 116, thereby causing the relatively rotating crushing rollers 116 to crush the waste plastic bottles. Two baffle plates 118 are fixedly connected to the inner side wall of the top wall of the crushing box 101, the baffle plates 118 are in one-to-one correspondence with the crushing rollers 116, namely, one baffle plate 118 is correspondingly arranged above each crushing roller 116, the length direction of each baffle plate 118 is in the same direction as the axial direction of each crushing roller 116, and the first feed inlet 102 is positioned between the two baffle plates 118. The two stopper plates 118 can block the waste plastic bottles, and can prevent the waste plastic bottles from being ejected to other positions by the extrusion force of the two crushing rollers 116.

Referring to fig. 2, a slag blowing pipe 119 and a slag scraping bar 120 are provided in the crushing tank 101. Two slag blowing pipes 119 are arranged, the slag blowing pipes 119 are in one-to-one correspondence with the crushing rollers 116, the slag blowing pipes 119 are arranged on the side wall of the crushing box 101 in a penetrating mode, one end of each slag blowing pipe 119 is communicated with an external air source, and the other end of each slag blowing pipe 119 points to the crushing roller 116. The two slag scraping strips 120 are arranged, the slag scraping strips 120 are in one-to-one correspondence with the crushing rollers 116, the slag scraping strips 120 are arranged below the crushing rollers 116, two ends of the slag scraping strips 120 are connected to the side wall of the crushing box 101 through bolts, the slag scraping strips 120 are provided with scraping hairs 121, and the scraping hairs 121 are attached to the crushing rollers 116.

The scraping hair 121 on the scraping strip 120 can scrape the residues on the crushing roller 116, the air flow of the slag blowing pipe 119 can blow off the residues on the crushing roller 116, and the scraping hair 121 and the air flow of the slag blowing pipe 119 are matched together, so that the possibility of residual plastic fragments on the crushing roller 116 is reduced.

Referring to fig. 2, a guide plate 122, a vibration cam 123 and a third driving motor (not shown in the drawing) are disposed in the crushing box 101, the guide plate 122 is located below the crushing roller 116, one side of the guide plate 122 is rotatably connected in the first discharge hole 103, the other side is located in the crushing box 101 and is abutted against the vibration cam 123, the guide plate 122 is obliquely disposed, and specifically, one side of the guide plate 122 located in the first discharge hole 103 is lower than one side of the guide plate 122 away from the first discharge hole 103. The vibration cam 123 is rotatably connected in the crushing box 101, the third driving motor is installed outside the crushing box 101, an output shaft of the third driving motor is coaxially connected to the vibration cam 123, and the third driving motor is used for driving the vibration cam 123 to rotate.

The plastic chips crushed by the crushing roller 116 fall onto the guide plate 122, and the inclined guide plate 122 can smoothly guide out the plastic chips from the first discharge port 103 and convey the plastic chips to the cleaning mechanism via the conveyor belt 6. In the process of guiding the plastic chips by the guide plate 122, the vibration cam 123 is always in a rotating state, and the rotating vibration cam 123 can make the guide plate 122 vibrate reciprocally, so that the smoothness of guiding the plastic chips from the guide plate 122 is further improved.

Referring to fig. 2, a baffle 124 is provided above the guide plate 122, and the baffle 124 is positioned below the crushing roller 116 in order to prevent plastic chips from falling between the side of the guide plate 122 away from the first discharge port 103 and the inner side wall of the crushing box 101.

Referring to fig. 4, the cleaning mechanism includes a second feed port 201, a second discharge port 202, a cleaning chamber 203, a spray flow channel 204, a bidirectional stirring assembly, a cleaning tank 205, a first housing 206, and a first lifting assembly.

Referring to fig. 4, the cleaning tank 205 has a tank structure having a cavity therein, a first passage opening 207 through which the conveyor belt 6 passes is provided in a side wall portion of the cleaning tank 205 near the top wall, and a second passage opening 208 through which the conveyor belt 6 passes is provided in a side wall portion of the cleaning tank 205 near the bottom wall. The cleaning cavity 203 is disposed in the first casing 206, the second feeding port 201 and the second discharging port 202 are respectively disposed on the first casing 206, and the second feeding port 201 and the second discharging port 202 are respectively communicated with the cleaning cavity 203, specifically, the second feeding port 201 and the second discharging port 202 are located on the same end face of the first casing 206, and the second feeding port 201 is located above the second discharging port 202.

Referring to fig. 4, the bi-directional stirring assembly includes a rotation shaft 209, a rotation cylinder 210, and a second driving mechanism 211.

Referring to fig. 4, the rotation shaft 209 is coaxially disposed in the first housing 206, and the rotation shaft 209 coaxially passes through the cleaning chamber 203, both ends of the rotation shaft 209 respectively pass through end surfaces of the first housing 206, and the rotation shaft 209 is rotatably connected to the end surfaces of the first housing 206 by bearings (not shown).

Referring to fig. 4, a second driving mechanism 211 is connected to the outside of the first housing 206, the second driving mechanism 211 is used for driving the rotation shaft 209 to rotate, specifically, the second driving mechanism 211 is a motor, a frame is fixedly connected to the outer side wall of the first housing 206, the second driving mechanism 211 is connected to the frame, a transmission mechanism 212 is arranged between an output shaft of the second driving mechanism 211 and a shaft body of the rotation shaft 209 extending out of the first housing 206, and the transmission mechanism 212 is any one of belt transmission, chain transmission and gear transmission.

Referring to fig. 4 and 5, a rotary drum 210 is rotatably coupled to the cleaning chamber 203 by a bearing (not shown), the rotary drum 210 has a cylindrical structure with both ends opened, and the rotary drum 210 is coaxially disposed with the cleaning chamber 203. A first driving gear 213 is coaxially fixed on the rotation shaft 209, and the first driving gear 213 is located in the cleaning chamber 203 and is close to one end of the first housing 206 away from the transmission structure. The inner side wall of the rotary cylinder 210 is provided with a first internal tooth structure, a first driven gear 214 is arranged between the first driving gear 213 and the first internal tooth structure, a gear shaft is coaxially fixed on the first driven gear 214, the gear shaft is rotatably connected to one side of the first casing 206 far away from the transmission structure, and the first driven gear 214 is simultaneously meshed with the first internal tooth structure and the first driving gear 213.

Referring to fig. 4, stirring blades 215 are provided on the outer side wall of the rotation shaft 209 and the inner side wall of the rotation cylinder 210, respectively, and the stirring blades 215 on the rotation shaft 209 and the stirring blades 215 on the rotation cylinder 210 are staggered with each other. After the second driving mechanism 211 is started, the second driving mechanism 211 drives the rotation shaft 209 to rotate through a transmission system, the rotation shaft 209 drives the rotation cylinder 210 to rotate through the meshing relationship of the first driving gear 213, the first driven gear 214 and the first internal tooth structure in the rotating process, and the direction of the force can be changed through the arrangement of the first driven gear 214, so that the rotating direction of the rotation cylinder 210 is opposite to the rotating direction of the rotation shaft 209, and therefore the stirring blades 215 on the rotation shaft 209 and the stirring blades 215 on the rotation cylinder 210 move relatively, and the stirring sufficiency of plastic fragments is improved.

Referring to fig. 4, the first housing 206 includes a cylindrical body 2061 and end caps 2062, the cylindrical body 2061 having a cylindrical structure with both ends open, the end caps 2062 being capped with one at each of the both end openings of the cylindrical body 2061, the end caps 2062 being coupled to the cylindrical body 2061 by bolts. Both ends of the rotation shaft 209 pass through two end caps 2062, respectively, and the rotation shaft 209 is rotatably connected to the end caps 2062 by bearings (not shown).

Referring to fig. 4 and 5, the shower flow passage 204 includes a main flow passage 2041 and an injection flow passage 2042, and the main flow passage 2041 is provided on the axis of the rotary shaft 209 and in the side wall of the rotary cylinder 210, respectively, and one end of the main flow passage 2041 is closed and the other end is connected to an external water source.

Referring to fig. 4 and 5, specifically, a main flow channel 2041 is provided on the axis of the rotation shaft 209, one end of the main flow channel 2041 is located in the rotation shaft 209 to reach a closed state, the other end of the main flow channel runs through the end surface of the rotation shaft 209 far away from the transmission mechanism 212, and is connected with a first water receiving pipe 216, the first water receiving pipe 216 is connected with a rotary joint 217, and the rotary joint 217 is connected with a water pipe of an external water source, so that the external water source is sequentially sent into the main flow channel 2041 through the water pipe, the rotary joint 217 and the first water receiving pipe 216 in the rotation process of the rotation shaft 209.

Referring to fig. 4 and 5, specifically, a plurality of main channels 2041 are provided in a side wall of the rotary cylinder 210, the plurality of main channels 2041 are circumferentially disposed along the side wall of the rotary cylinder 210, one end of the main channel 2041 is located in the side wall of the rotary cylinder 210 to reach a closed state, and the other end penetrates through an end surface of the rotary cylinder 210 away from the transmission mechanism 212. The end cap 2062 far away from the transmission mechanism 212 is provided with runner ring grooves 218, the runner ring grooves 218 are arranged on the side wall of the end cap 2062 facing the cleaning cavity 203, when the end cap 2062 is connected to the cylinder 2061, the runner ring grooves 218 are simultaneously communicated with a plurality of main runners 2041, the side wall of the end cap 2062 facing away from the cleaning cavity 203 is provided with a second water receiving pipe 219 communicated with the runner ring grooves 218, and the second water receiving pipe 219 is communicated with a water pipe of an external water source. During the rotation of the rotary cylinder 210, the external water source sequentially passes through the water pipe, the second water receiving pipe 219, the runner ring groove 218 and then enters the main runner 2041.

Referring to fig. 4 and 5, injection flow channels 2042 are provided on the inner side wall of the rotary cylinder 210 and the outer side wall of the rotary shaft 209, respectively, and one end of the injection flow channel 2042 communicates with the main flow channel 2041 and the other end communicates with the cleaning chamber 203. During operation, the rotary cylinder 210 and the rotary shaft 209 are in a state of relative rotation, and at the same time, an external water source is sprayed into the cleaning cavity 203 through the spraying flow passage 2042, during which broken plastic fragments are conveyed into the second feed port 201 through the conveying belt 6, and conveyed into the cleaning cavity 203 through the guiding of the second feed port 201. The sprayed water flow simultaneously cleans the plastic fragments, and simultaneously, the stirring blades 215 are driven by the rotary cylinder 210 and the rotary shaft 209 to fully stir the plastic fragments so as to realize stirring cleaning of the plastic fragments.

Referring to fig. 4 and 5, in order to prevent the water flow from affecting the first driving gear 213 and the first driven gear 214 during the cleaning process, a water baffle 220 is coaxially fixed to the rotation shaft 209, and the water baffle 220 is disposed at a side of the first driving gear 213 facing the transmission mechanism 212, with a gap between the water baffle 220 and the first driving gear 213.

After the plastic chips are cleaned for a certain time, the first lifting assembly lifts one end of the first casing 206 away from the second discharging hole 202, so that the first casing 206 is in an inclined state, the cleaned plastic chips are immediately poured out from the second discharging hole 202, the poured plastic chips fall onto the conveying belt 6, and the plastic chips are conveyed to a dewatering mechanism for dewatering through the conveying of the conveying belt 6.

Referring to fig. 4, in the present embodiment, the first lifting assembly includes a connection rope 221, a rotation sleeve 223 and a winding motor 222, the winding motor 222 is connected to the top wall of the cleaning tank 205, the rotation sleeves 223 are respectively provided with one on both ends of the rotation shaft 209 penetrating out of the first housing 206, the connection rope 221 is respectively connected to one on each rotation sleeve 223, wherein one end of the connection rope 221, which is close to the second discharge port 202 and is far away from the rotation shaft 209, is connected to the top wall of the cleaning tank 205, and one end of the connection rope 221, which is far away from the second discharge port 202 and is far away from the rotation shaft 209, is connected to the output end of the winding motor 222.

When the end of the first housing 206 away from the second discharge port 202 needs to be lifted, a worker starts the winding motor 222, and the winding motor 222 winds the connecting rope 221, so that the end of the first housing 206 away from the second discharge port 202 is lifted, and the cleaned plastic fragments are poured out from the second discharge port 202.

Referring to fig. 6, the dewatering mechanism includes a dewatering box 301, a second housing 302, a third feed inlet 303, a third discharge outlet 304, a dewatering chamber 305, and a drive assembly.

Referring to fig. 6, the dewatering box 301 has a box structure with a cavity therein, a third through hole 306 through which the conveyor belt 6 passes is provided in a side wall portion of the dewatering box 301 near the top wall, and a fourth through hole 307 through which the conveyor belt 6 passes is provided in a side wall portion of the dewatering box 301 near the bottom wall. The dehydration cavity 305 is disposed in the first casing 206, the third feed inlet 303 and the third discharge outlet 304 are respectively disposed on the second casing 302, and the third feed inlet 303 and the third discharge outlet 304 are respectively communicated with the dehydration cavity 305, specifically, the third feed inlet 303 and the third discharge outlet 304 are located on the same end face of the second casing 302, and the third feed inlet 303 is located above the third discharge outlet 304.

Referring to fig. 6, the second discharge port 202 is connected to the third feed port 303 through the conveyor belt 6, and the plastic chips after cleaning are conveyed by the conveyor belt 6 to fall into the third feed port 303, and are guided by the third feed port 303 to enter the dewatering chamber 305.

Referring to fig. 6, a plurality of dehydration holes 308 are provided on the sidewall of the dehydration chamber 305, and more particularly, a dehydration drum 309 is coaxially provided in the second housing 302, the dehydration drum 309 is rotatably connected in the second housing 302, and a plurality of dehydration holes 308 are provided on the outer sidewalls of the dehydration tank 301 and the dehydration drum 309, respectively. An airflow shaft 310 is coaxially provided in the dehydration barrel 309, both ends of the airflow shaft 310 penetrate out of the end face of the second housing 302, and the airflow shaft 310 is rotatably connected to the second housing 302 by a bearing (not shown).

Referring to fig. 6, a driving assembly for driving the air flow shaft 310 and the dehydration chamber 305 to rotate synchronously and relatively includes a driving piece 311, a second driving gear 312, and a second driven gear 313.

Referring to fig. 6, the driving member 311 is a motor, and the transmission form between the driving member 311 and the airflow shaft 310 is identical to the transmission form between the second driving mechanism 211 and the rotation shaft 209, which will not be described herein. The first driving gear 213 is coaxially fixed on the airflow shaft 310, and the second driving gear 312 is located in the dewatering cavity 305 and near an end of the second housing 302 away from the transmission structure. A second internal gear structure is provided on the inner side wall of the dehydration barrel 309, a second driven gear 313 is provided between the second driving gear 312 and the second internal gear structure, a gear shaft is coaxially fixed on the second driven gear 313, the gear shaft is rotatably connected to one side of the second housing 302 far from the transmission structure, and the second driven gear 313 is simultaneously meshed with the second internal gear structure and the second driving gear 312.

Referring to fig. 6, an air flow passage 314 is provided on the axis of the air flow shaft 310, one end of the air flow passage 314 is closed, and the other end is connected to an external air source. Specifically, one end of the airflow channel 314 is located in the airflow shaft 310 to achieve a closed state, the other end penetrates through the end surface of the airflow shaft 310 far away from the transmission mechanism 212, and is connected with an air receiving pipe 315, the air receiving pipe 315 is connected with a rotary joint 217, and the rotary joint 217 is connected with a pipeline of an external air source, so that the external air source is sequentially sent into the airflow channel 314 through the rotary joint 217 and the air receiving pipe 315 in the rotating process of the airflow shaft 310.

Referring to fig. 6, an injection flow path 317 is provided on a sidewall of the air flow shaft 310, and one end of the injection flow path 317 communicates with the air flow path 314 and the other end communicates with the dehydration chamber 305.

After the driving member 311 is started, the driving member 311 drives the airflow shaft 310 to rotate through the transmission system, and the airflow shaft 310 drives the dewatering cylinder 309 to rotate through the meshing relationship of the second driving gear 312, the second driven gear 313 and the second internal tooth structure in the rotating process, and the direction of the rotation direction of the dewatering cylinder 309 can be changed through the arrangement of the second driven gear 313, so that the rotation direction of the dewatering cylinder 309 is opposite to the rotation direction of the airflow shaft 310, the airflow sprayed by the airflow shaft 310 and the inner wall of the dewatering cylinder 309 relatively move, and plastic fragments enter the dewatering cavity 305 and are adhered to the inner wall of the dewatering cylinder 309 under the action of centrifugal force, so that the airflow sprayed by the airflow shaft 310 and the plastic fragments relatively move, and the airflow can air-dry the plastic fragments more thoroughly. At the same time, the water on the plastic chips is finally thrown out through the dewatering holes 308 under the action of centrifugal force.

Referring to fig. 6, in order to prevent moisture on the plastic chips from affecting the second driving gear 312 and the second driven gear 313, a partition plate 318 is coaxially fixed to the airflow shaft 310, and the partition plate 318 is positioned on a side of the second driving gear 312 facing the transmission mechanism 212, with a gap between the partition plate 318 and the second driving gear 312.

Referring to fig. 6, the setting of the guide plate 122, the vibration cam 123 and the third driving motor is also provided in the dewatering box 301, except that the guide plate 122 is provided in the dewatering box 301, one side of the guide plate 122 is provided in the fourth through hole 307, and the guide plate 122 is located below the second casing 302, and the rest is identical to the setting in the crushing box 101, which is not described herein.

Referring to fig. 6, the dehydrating mechanism also includes a first elevating assembly, and the rest is identical to the first elevating assembly of the washing mechanism except that the connection rope 221 of the first elevating assembly is connected to the air flow shaft 310, and the winding motor 222 of the first elevating assembly is connected to the dehydrating tank 301, which will not be described herein.

After the plastic chips are dehydrated for a certain time, the first lifting assembly lifts one end of the second casing 302 away from the third discharge hole 304, so that the second casing 302 is in an inclined state, the dehydrated plastic chips are poured out from the third discharge hole 304, and the poured plastic chips fall onto the conveying belt 6, are conveyed by the conveying belt 6 and are conveyed to the drying mechanism for drying.

Referring to fig. 7, the drying mechanism includes a fourth inlet 401, a fourth outlet 402, a hot air assembly, a drying liner 403, and a fixing drum 404.

Referring to fig. 7, the fixed cylinder 404 has a cylindrical structure with a cavity therein, the axial direction of the fixed cylinder 404 is vertically arranged, a supporting frame (not shown) is fixedly connected to the bottom of the fixed cylinder 404, and the fixed cylinder 404 is placed on the ground through the supporting frame. The fourth feed inlet 401 is arranged at the top of the fixed cylinder 404, the fourth discharge outlet 402 is arranged at the bottom of the fixed cylinder 404, and the fourth feed inlet 401 and the fourth discharge outlet 402 are communicated with the internal cavity of the fixed cylinder 404.

Referring to fig. 7, a drying liner 403 is of a cylindrical structure with two open ends, the drying liner 403 is disposed in a fixed cylinder 404, a supporting ring 405 is disposed in the fixed cylinder 404, a containing ring groove for containing the bottom of the drying liner 403 is disposed on the supporting ring 405, the supporting ring 405 is coaxially disposed with the inner cavity of the fixed cylinder 404, and the supporting ring 405 is fixedly connected to the bottom wall of the fixed cylinder 404. The drying liner 403 is coaxially arranged in the fixed cylinder 404, the top wall of the drying liner 403 is tightly attached to the top wall of the fixed cylinder 404, and the bottom wall of the drying liner 403 is embedded into the containing ring groove.

Referring to fig. 7, the outer diameter of the drying liner 403 is smaller than the inner diameter of the fixed cylinder 404, so that a hot air flow channel 406 is provided between the outer sidewall of the drying liner 403 and the inner sidewall of the fixed cylinder 404, a plurality of hot air guide holes 407 communicated with the hot air flow channel 406 are provided on the outer sidewall of the drying liner 403, and the air outlet of the hot air assembly is communicated with the hot air flow channel 406.

Referring to fig. 7, the hot air assembly includes a blower 408, an air guide duct 409, and a heating coil 410.

Referring to fig. 7, one end of an air guide duct 409 is connected to an outer sidewall of the fixed cylinder 404, and the air guide duct 409 is communicated with the hot air flow channel 406, one end of the air guide duct 409 away from the fixed cylinder 404 is communicated with an air outlet of the fan 408, and a heating coil 410 is wound around the air guide duct 409. In operation, the fan 408 makes the air flow enter the hot air channel 406 through the air guide duct 409, and the heating coil 410 simultaneously operates in the process of the air flow passing through the air guide duct 409, so that the air flow entering the hot air channel 406 is hot air, and the hot air enters the drying liner 403 through the hot air guide hole 407.

Referring to fig. 7, a fourth feed inlet 401 and a fourth discharge outlet 402 are respectively communicated with a drying liner 403, a third discharge outlet 304 is communicated with the fourth feed inlet 401 through a conveying belt 6, centrifugally dehydrated plastic fragments are conveyed into the fourth feed inlet 401 through the conveying belt 6, and conveyed through the fourth feed inlet 401, the plastic fragments enter the drying liner 403, and hot air in the drying liner 403 is used for drying the plastic fragments by hot air, so that the centrifugally dehydrated plastic fragments are further dried.

Referring to fig. 7, a buffer plate 411 is disposed in the drying liner 403, one side of the buffer plate 411 is fixedly connected to the inner sidewall of the drying liner 403, and the other side is in a suspended state and has a space with the inner sidewall of the drying liner 403. The buffer plate 411 is connected to one side of the inner sidewall of the drying liner 403, which is higher than the suspended side of the buffer plate 411, so that the buffer plate 411 has a downward inclined state. The buffer plates 411 are provided in several numbers from top to bottom, and two buffer plates 411 adjacent to each other in the vertical direction are arranged in a left-right staggered manner. When falling in the drying liner 403, the plastic fragments are blocked and guided by the buffer plates 411 and pass through each buffer plate 411 in a Z shape in sequence, so that the time of the plastic fragments in the drying liner 403 is prolonged, and the drying effect is further improved.

The plastic chips fall out from the fourth discharging hole 402 after drying, fall onto the conveying belt 6, are conveyed by the conveying belt 6, and are transported to a hot melting forming mechanism for hot melting, forming and granulating.

Referring to fig. 8, the hot melt molding mechanism includes a substrate 501, a fifth feed port 502, a hot melt assembly, an extrusion assembly, and a pellet assembly.

Referring to fig. 8, the heat-fusible module includes a heat-fusible cylinder 503 and a heating cable 504, the heat-fusible cylinder 503 is of a sealed cylindrical body 2061 structure, a cavity is formed in the heat-fusible cylinder 503, the heat-fusible cylinder 503 is horizontally arranged, a fifth feed inlet 502 is arranged at an upward side wall portion of the heat-fusible cylinder 503, and the fifth feed inlet 502 is communicated with the internal cavity of the heat-fusible cylinder 503. The heating cable 504 is spirally wound outside the heat-fusible cylinder 503, a fifth discharge port is provided at a downward side wall portion of the heat-fusible cylinder 503, and the fifth discharge port communicates with an inner cavity of the heat-fusible cylinder 503.

Referring to fig. 8, the extruding assembly includes an extruder 505 and a cooling head, the extruder 505 is mounted on a substrate 501, the extruder 505 is a conventional device in the prior art, and not described herein, and an end of the fifth discharge port, which is far away from the hot melt cylinder 503, is communicated with a feed port of the extruder 505.

Referring to fig. 8, the cooling tip includes a first tip 506 and a second tip 507, and both the first tip 506 and the second tip 507 are cylindrical structures. In the first end 506, a joint hole 5061 and a cooling flow passage 5062 are provided, the joint hole 5061 is located on the axis of the first end 506 and penetrates the first end 506, the cooling flow passage 5062 is provided in a plurality circumferentially around the joint hole 5061, and the cooling flow passage 5062 penetrates the first end 506.

Referring to fig. 8, a first cooling ring groove 508 is provided on the end surface of the extrusion hole of the extruder 505, the first end 506 is coaxially and fixedly connected to the end surface of the extrusion hole of the extruder 505, the connection hole 5061 is communicated with the extrusion hole of the extruder 505, the first cooling ring groove 508 is communicated with each cooling flow channel 5062, a liquid inlet hole is provided on the side wall of the end of the extrusion hole of the extruder 505, the liquid inlet hole is communicated with the first cooling ring groove 508, and a liquid inlet pipe 509 is communicated with the liquid inlet hole.

Referring to fig. 8, the second end 507 is coaxially and fixedly connected to the side surface of the first end 506 facing away from the extruder 505, the side surface of the second end 507 facing the first end 506 is provided with a second cooling ring groove 5071, the second cooling ring groove 5071 is communicated with each cooling flow channel 5062, the side wall of the second end 507 is provided with a liquid outlet hole, the liquid outlet hole is communicated with the second cooling ring groove 5071, and the liquid outlet hole is communicated with a liquid outlet pipe 510. The axis of the second end 507 is provided with a discharging hole 5072, the discharging hole 5072 penetrates through the second end 507, and the discharging hole is communicated with the connecting hole 5061.

The discharge hole 5072 and the engagement hole 5061 form a discharge through hole.

Referring to fig. 8, the fourth discharge port 402 is connected to the fifth feed port 502 through the conveyor belt 6, the plastic chips dried by hot air are conveyed to the fifth feed port 502 through the conveyor belt 6, and through the guiding of the fifth feed port 502, the plastic chips enter the hot-melt cylinder 503, the heating cable 504 causes the inside of the hot-melt cylinder 503 to maintain a high temperature state all the time, the high temperature can cause the plastic chips entering the hot-melt cylinder 503 to melt, forming a flowing shape, the flowing plastic enters the extruder 505 through the fifth discharge port, the screw rod in the extruder 505 pushes the flowing plastic to move, the plastic is extruded after passing through the extrusion hole, the connection hole 5061 and the discharge hole 5072 of the extruder 505 in sequence, and in the process, the cooling medium (such as water, cooling oil, etc.) is continuously conveyed through the routes of the liquid inlet pipe 509, the liquid inlet hole, the first cooling ring groove 508, the cooling ring groove 5062, the liquid outlet hole and the liquid outlet pipe 510, so that the plastic extruded from the discharge hole is in solid form. For ease of transportation and storage, the extruded solid form plastic needs to be pelletized using a pelletizing assembly. The grain cutting assembly is arranged at the outlet of the discharging hole, and the material cutting assembly is used for cutting the plastic extruded by the extrusion assembly into plastic grains.

Referring to fig. 8, the dicing assembly includes a third driving mechanism 511 and a cutting blade 512, the third driving mechanism 511 is mounted on the base plate 501 by a bracket, the cutting blade 512 includes a shaft sleeve 5121 and a blade 5122, the blade 5122 is fixedly connected to an outer sidewall of the shaft sleeve 5121, the blade 5122 is provided with at least two cutting blades at equal intervals along a circumferential direction, the blade 5122 has a cutting edge, and the blade 5122 is attached to a side surface of the second end 507 facing away from the first end 506. The third driving mechanism 511 is a motor, the shaft sleeve 5121 is coaxially fixed on an output shaft of the third driving mechanism 511, and the third driving mechanism 511 is used for driving the cutting blade 512 to rotate.

Referring to fig. 8, a portion of the base adjacent to the third driving mechanism 511 has a yielding opening 513, a portion of the conveying section of the conveying belt 6 is disposed in the yielding opening 513, and the start end of the conveying belt 6 is located below the first end 506. During the process of extruding the plastic, the third driving mechanism 511 drives the cutting blade 512 to rotate all the time, and the cutting blade on the cutting blade 512 can cut the plastic to form granular plastic.

The inner wall of the uncrushed waste plastic bottle is difficult to clean, and even if the uncrushed waste plastic bottle can be cleaned barely, the cleaning effect is poor, so that the impurity content is high, and the purity of raw materials required for preparing the polyester fiber in the later stage is affected. The broken plastic fragments have no inner wall, and can be thoroughly cleaned when being cleaned at the cleaning mechanism. Meanwhile, after the washed plastic fragments are subjected to two procedures of centrifugal dehydration and hot air drying in sequence, the possibility of moisture on the surfaces is reduced, so that the dryness of the plastic fragments is improved. Therefore, the procedures of crushing, cleaning, centrifugal dehydration and hot air drying are sequentially adopted for the waste plastic bottles, so that the purity and dryness of raw materials required for preparing the polyester fibers are improved, and the molding quality of the polyester fibers in the later stage is improved. Meanwhile, after the plastic fragments are subjected to hot melting, forming and granulating processes, the convenience in transportation and storage is improved.

The previous drying and forming system for the regenerated polyester fiber provided by the invention is described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims

1. A front-end drying and forming system for regenerated polyester fiber, characterized by comprising:

A crushing mechanism, comprising a first feed inlet, a crushing assembly and a first discharge outlet, wherein the crushing assembly is arranged between the first feed inlet and the first discharge outlet;

A cleaning mechanism, comprising a second feed inlet, a second discharge outlet, a cleaning chamber, a spray flow channel and a bidirectional stirring component, wherein the first discharge outlet is connected to the second feed inlet through a conveyor belt, the second feed inlet and the second discharge outlet are respectively connected to the cleaning chamber, the bidirectional stirring component is arranged in the cleaning chamber, the spray flow channel is arranged in the bidirectional stirring component, and the injection end of the spray flow channel is arranged in the cleaning chamber, and the water inlet end of the spray flow channel is connected to an external water source;

A dehydration mechanism, comprising a third feed port, a third discharge port, a dehydration chamber and a driving assembly, wherein the second discharge port is connected to the third feed port through a conveyor belt, the third feed port and the third discharge port are respectively connected to the dehydration chamber, a plurality of dehydration holes are provided on the side wall of the dehydration chamber, and the driving assembly is used to drive the dehydration chamber to rotate;

A drying mechanism, comprising a fourth feed port, a fourth discharge port, a hot air component, a drying liner and a fixed cylinder, wherein the third discharge port is connected to the fourth feed port through a conveyor belt, the fourth feed port and the fourth discharge port are respectively connected to the drying liner, the drying liner is arranged in the fixed cylinder, a hot air flow channel is provided between the outer wall of the drying liner and the inner wall of the fixed cylinder, a plurality of hot air guide holes connected to the hot air flow channel are provided on the outer wall of the drying liner, and the air outlet of the hot air component is connected to the hot air flow channel;

The hot melt molding mechanism includes a fifth feed port, a hot melt component, an extrusion component and a pelletizing component. The fourth discharge port is connected to the fifth feed port through a conveyor belt, the fifth feed port is connected to the hot melt component, the hot melt component is connected to the extrusion component, the pelletizing component is arranged at the discharge end of the extrusion component, and the cutting component is used to cut the plastic extruded by the extrusion component into plastic particles.

2. The front-end drying and forming system of regenerated polyester fiber according to claim 1 is characterized in that the crushing mechanism also includes a crushing box, the first feed port is arranged at the top of the crushing box, the first discharge port is arranged at the side wall of the crushing box, the crushing assembly is arranged in the crushing box, the crushing assembly includes a crushing roller, two crushing rollers are arranged side by side, each of the crushing rollers is provided with crushing teeth on the surface, the crushing teeth on the two crushing rollers are staggered, the projection of the first feed port is located between the two crushing rollers, the first discharge port is located below the two crushing rollers, and a first driving mechanism for driving the two crushing rollers to rotate relative to each other is provided outside the crushing box.

3. The front-end drying and forming system of regenerated polyester fiber according to claim 2 is characterized in that the crushing mechanism also includes a feed vibration assembly, the feed vibration assembly includes a feed bin and a vibration mechanism, one end of the feed bin is communicated with the first feed port, and the other end extends in a direction away from the first feed port, an external pressure ring is provided at the end of the feed bin away from the first feed port, a supporting cylinder is provided on the top of the crushing box, the supporting cylinder is coaxially arranged with the first feed port, the feed bin passes through the supporting cylinder, and the external pressure ring is located above the supporting cylinder, a plurality of guide columns are fixedly connected to the top of the supporting cylinder, the guide column passes through the external pressure ring, a first elastic member is sleeved on the guide column, the first elastic member is located between the end faces of the external pressure ring and the supporting cylinder, and the vibration mechanism is used to drive the external pressure ring to reciprocate and rise and fall on the guide column.

4. The front-end drying and forming system of regenerated polyester fiber according to claim 3 is characterized in that the vibration mechanism includes a second driving motor, a linkage ring, a fixed ring, a reciprocating ring, and a linkage rope, the fixed ring is sleeved outside the supporting cylinder, the linkage ring is rotatably connected to the outside of the fixed ring, the reciprocating ring is arranged outside the supporting cylinder and is located below the linkage ring, the reciprocating ring and the supporting cylinder are slidingly matched, one end of the linkage rope is connected to the outer pressure ring, and the other end is connected to the reciprocating ring after passing through the fixed ring, the reciprocating ring is provided with a lifting ring strip on the side of the reciprocating ring facing the linkage ring, the lifting ring strip is wavy on the side of the linkage ring facing the reciprocating ring, the linkage ring is provided with a resistance protrusion on the side of the reciprocating ring, the resistance protrusion resists the lifting ring strip, and the second driving motor is used to drive the linkage ring to rotate.

5. The front-end drying and forming system of regenerated polyester fiber according to claim 2 is characterized in that a slag blowing pipe and a slag scraping strip are provided in the crushing box, one end of the slag blowing pipe is connected to an external air source, and the other end points to the crushing roller; the slag scraping strip is arranged below the crushing roller, and the scraping strip is provided with scraping bristles, and the scraping bristles are attached to the crushing roller.

6. The front-end drying and forming system of regenerated polyester fiber according to claim 1 is characterized in that a guide plate, a vibrating cam and a third drive motor are provided in the crushing box, the guide plate is located below the crushing roller, one side of the guide plate is rotatably connected to the first discharge port, and the other side is located in the crushing box and abuts against the vibrating cam, the vibrating cam is rotatably connected in the crushing box, and the third drive motor is used to drive the vibrating cam to rotate.

7. The front-end drying and forming system of regenerated polyester fiber according to claim 1 is characterized in that the cleaning mechanism also includes a cleaning box and a first housing; the side wall portion of the cleaning box close to the top wall is provided with a first through-port, and the side wall portion of the cleaning box close to the bottom wall is provided with a second through-port; the second feed port and the second discharge port are respectively provided on the first housing, and the cleaning chamber is provided in the first housing; the bidirectional stirring assembly includes a rotating shaft, a rotating drum and a second driving mechanism, the rotating shaft is coaxially provided on the first housing, the second driving mechanism is connected to the outside of the first housing, and the second driving mechanism is used to drive the The rotating shaft rotates, and the rotating drum is rotatably connected in the cleaning chamber. Agitating blades are respectively provided on the outer wall of the rotating shaft and the inner wall of the rotating drum. A first driving gear is sleeved on the rotating shaft, and a first internal tooth structure is provided on the inner wall of the rotating drum. A first driven gear is provided between the first driving gear and the first internal tooth structure. The spray flow channel includes a main flow channel and an injection flow channel. The main flow channel is respectively provided on the axis of the rotating shaft and in the side wall of the rotating drum. One end of the main flow channel is closed, and the other end is connected to an external water source. One end of the injection flow channel is connected to the main flow channel, and the other end is connected to the cleaning chamber.

8. The front-end drying and forming system of regenerated polyester fiber according to claim 7 is characterized in that the cleaning mechanism also includes a first lifting component, the first lifting component includes a connecting rope, a rotating sleeve and a winch motor, the winch motor is connected to the cleaning box, the rotating sleeve is respectively provided with a rotating sleeve at both ends of the rotating shaft passing through the first housing, and the connecting rope is respectively provided on each of the rotating sleeves, one end of one connecting rope away from the rotating shaft is connected to the top wall of the cleaning box, and the other end of the other connecting rope away from the rotating shaft is connected to the output end of the winch motor.

9. The front-end drying and forming system of regenerated polyester fiber according to claim 1 is characterized in that the dehydration mechanism also includes a dehydration box and a second casing; the side wall portion of the dehydration box close to the top wall is provided with a third through-hole, and the side wall portion of the dehydration box close to the bottom wall is provided with a fourth through-hole; the third feed inlet and the third discharge outlet are respectively arranged on the second casing, the dehydration chamber is arranged in the second casing, a dehydration cylinder is coaxially arranged in the second casing, the dehydration cylinder is rotatably connected in the second casing, an air flow shaft is coaxially passed through the dehydration cylinder, and the air flow shaft is rotatably connected to the second casing; the driving assembly includes a driving member, A second driving gear and a second driven gear, the driving member is used to drive the airflow shaft to rotate, the second driving gear is arranged on the airflow shaft, a second internal tooth structure is provided on the inner wall of the dehydration cylinder, and the second driven gear is arranged between the second driving gear and the second internal tooth structure; a plurality of dehydration holes are respectively provided on the outer wall of the dehydration box and the dehydration cylinder, an airflow channel is provided on the axis of the airflow shaft, one end of the airflow channel is closed, and the other end is connected to an external air source, and a jet airflow channel is provided on the side wall of the airflow shaft, one end of the jet airflow channel is communicated with the airflow channel, and the other end is communicated with the dehydration chamber.

10. The front-end drying and forming system of regenerated polyester fiber according to claim 1 is characterized in that the hot melt component includes a hot melt cylinder and a heating cable, and the heating cable is spirally wound around the hot melt cylinder; the extrusion component includes an extruder and a cooling end head, and a cooling channel and a discharge hole are provided in the cooling end head, and the cooling channel is arranged around the discharge hole, one end of the cooling channel has a liquid inlet hole, and the other end has a liquid outlet hole; the pelletizing component includes a third driving mechanism and a cutting blade, the cutting blade has a cutting blade, and the third driving mechanism is used to drive the cutting blade to rotate.