CN217226581U

CN217226581U - Device for feeding polyester chips

Info

Publication number: CN217226581U
Application number: CN202220945529.0U
Authority: CN
Inventors: 柏立军; 郑威; 乙金明; 金管范; 王永锋; 陈明
Original assignee: Jiangsu Hengli Chemical Fiber Co Ltd
Current assignee: Jiangsu Hengli Chemical Fiber Co Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-08-19
Anticipated expiration: 2032-04-22

Abstract

The utility model relates to a device for feeding polyester chips, which comprises a drying tower (1), a chip blanking pipe (3), a screw extruder (5), a filter (6), a melt conveying pipeline (7) and a spinning box body (8), wherein a rotary feeder (2) is arranged between the drying tower (1) and the chip blanking pipe (3), and a chip buffer groove (4) is arranged between the chip blanking pipe (3) and the screw extruder (5); the rotary feeder (2) consists of a motor (9), a rotating shaft (10) and blades (11), the motor (9) is positioned on the outer side of the bottom of the drying tower (1), and the rotating shaft (10) and the blades (11) are positioned on the inner side of the bottom of the drying tower (1). The utility model discloses a design and the application of rotatory feeder and section dashpot have effectively solved the difficult problem of amorphous, low melting point, the sensitive polyester section feeding of temperature, have ensured normal production, have improved product quality, but also can reduce the oxidation, improve dyeing stability.

Description

Device for feeding polyester chips

Technical Field

The utility model belongs to the technical field of the weaving, a device for polyester chip feeding is related to.

Background

With the 90 s in the world, the chip spinning technology falls to the ground, roots, sprouts and grows in China, and after more than 30 years of development, a chip spinning system is completed in China, so that chip spinning industrialization, upstream and downstream industrial chains and enterprises are formed, and the chip spinning technology is mature and perfect day by day. The slice for the early slice spinning is mainly a conventional polyester slice, the quality requirement of the produced yarn is not high, but along with the increasing of market competition and the improvement of the direct spinning technology, the cost and the quality advantage of the direct spinning are gradually shown, the slice spinning cannot meet the conventional polyester slice spinning, and the slice spinning is completely changed to the direction of differentiation, refinement and specialization, which puts higher requirements on the feeding of the differentiated slice, and the old slice spinning equipment has the problems of difficult feeding, blockage, oxidation, agglomeration, long detention time and the like in the feeding aspect, particularly on the slices with low melting point, amorphous and the like, the slices are extremely easy to adhere to a feeding port or a pipeline and cannot meet the production, even if the slice is produced by reluctant capacity, but the technical obstacles which cannot be overcome exist in the quality stability and the dyeing uniformity of the yarn. The utility model discloses an effectively solve and improve above section and spin the problem that exists, provided one kind and be used for polyester section feed arrangement, can effectual solution feeding difficulty, block up, caking, oxidation scheduling problem to can shorten the detention time by a wide margin, realize the sliced spinning of various differentiation, improve the stability and the dyeing homogeneity of product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that exists among the prior art, provide a device for polyester chip feeding, the utility model discloses a device can be used in sliced section such as low melting point polymer, amorphous polymer, PET, PBT, PTT, PA6 to spin.

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

a device for feeding polyester chips sequentially comprises a drying tower, a chip discharging pipe, a screw extruder, a filter, a melt conveying pipeline and a spinning box body, wherein a rotary feeder is arranged between the drying tower and the chip discharging pipe, and a chip buffer tank is arranged between the chip discharging pipe and the screw extruder;

the rotary feeder consists of a motor, a rotating shaft and blades, the motor is positioned at the outer side of the bottom of the drying tower, and the rotating shaft and the blades are positioned at the inner side of the bottom of the drying tower; the blades are fixed in the clamping grooves on the rotating shaft, the rotating shaft is connected to the motor, and dried slices are conveyed to the slice discharging pipe through the blades rotated by the rotary feeder; the rotary feeder has the advantages that the problems of difficult feeding, blockage and the like caused by the fact that differential slices, low-melting-point slices, amorphous slices and the like are easy to agglomerate at the bottom of the drying tower are solved, the motor of the rotary feeder drives the bearing and the blades to rotate, and the rotary feeder is characterized in that the rotating speed of the motor is linked with the rotating speed of the screw extruder, so that the fact that the whole blanking pipeline is not sliced and retained is guaranteed, and the retention time is shortened; incessantly rotatory blade not only plays the effect of stirring, still has the effect of mixing, and rotatory stirring has improved drying tower bottom material greatly, and the caking, the problem of jam mixes the bottom section simultaneously, improves sliced homogeneity, still lets drying tower bottom not have the dead angle, can not have the section long-term stay to cause the quality undulant. The prior art has no rotary feeder, completely depends on gravity for blanking, is easy to accumulate and agglomerate at the bottom of the drying tower, causes the problems of difficult feeding and the like, easily has dead corners at the bottom of the drying tower, and cannot control the feeding state of the slices;

the slices conveyed out by the rotating blades pass through a blanking pipeline, reach a slice buffer slot and then enter a screw extruder. The section dashpot outside has the stainless steel and presss from both sides the cover, it has the cooling water inlet tube to press from both sides the cover lower part and connect, it has the cooling water outlet pipe to press from both sides cover upper portion, and the cooling water inlet tube is located the opposite side that presss from both sides the cover respectively with the cooling water outlet pipe, section dashpot middle part is connected with nitrogen gas and advances the pipe, get into behind the section dashpot with section dashpot inner wall intercommunication, nitrogen gas advances to manage and installs nitrogen gas pressure regulating valve and nitrogen gas ball valve in proper order, and nitrogen gas pressure regulating valve is more nearly apart from the section dashpot for the nitrogen gas ball valve. The section gets into from the upper portion of section dashpot, gets into the screw rod from the lower part, is the cooling water in the jacket all around, and the cooling water is low advances to exceed, lets the cooling water fully cool off the dashpot, reduces dashpot, inside section and ambient temperature, and simultaneously, a nitrogen gas pipe gets into from the dashpot middle part, and nitrogen gas pipe and dashpot inner wall seamless connection set up ball valve and pressure regulating valve on the nitrogen gas pipeline, controls the nitrogen gas volume of carrying through pressure regulating valve.

As a preferred technical scheme:

according to the device for feeding the polyester chips, the number of the blades is 3-15, when the number of the blades is less than 3, the effect is poor in the aspect of improving the caking problem, and the chip mixing effect is not generated; when the number of the blades exceeds 15, the number of the blades is increased, the blade interval is reduced, and the conveying amount of the slices is reduced; the motor speed is less than 30rpm, can effectively solve the caking problem to play fine mixed effect, and motor speed increases, and blade and sliced frictional force increase lets the blade temperature rise easily, leads to the low melting point section to glue on the blade, forms the caking, influences sliced transport.

The device for feeding the polyester chips is characterized in that the number of the blades is more preferably 8-10.

The device for feeding the polyester chips is characterized in that the drying tower is in a circular truncated cone shape with a large upper part and a small lower part.

According to the device for feeding the polyester chips, the size of the blade is generally in direct relation with the size of the bottom of the drying tower, the length of the blade is 2-10 mm smaller than the inner diameter of the bottom of the drying tower, the width of the blade is half of the inner diameter of the bottom of the drying tower, the gap between the blade and the inner wall of the drying tower is 1-5 mm, and when the gap is smaller than 1mm, the blade is easy to touch the inner wall of the drying tower, so that equipment loss is caused; when this intermittent type is greater than 5mm, can pile up the section in the clearance, become the blind area of blade, can't effectual transport unloading pipe, cause the detention time long, the fluctuation of quality, consequently, the intermittent type of blade and drying tower inner wall is at 1 ~ 5mm, preferred 2 ~ 3 mm.

According to the device for feeding the polyester chips, the thickness of the blade is 2-8 mm. When the thickness of the blades is less than 2mm, the blades are easy to deform in long-term operation or under the condition of small number of the blades, so that the blades touch the inner wall of the drying tower, and the operation efficiency is reduced; when the thickness of the blade is more than 8mm, the blade is too thick, and the running load becomes large in addition to the cost increase. Therefore, the thickness of the blade is 2-8 mm. The blade chooses for use stainless steel material, ensures the hardness of blade and difficult wearing and tearing to and do not have rust scheduling problem, be that other materials can't substitute.

The device for feeding the polyester chips is characterized in that the thickness of the blade is 4-5 mm.

According to the device for feeding the polyester chips, the chip buffer groove is a circular truncated cone-shaped groove with a large upper part and a small lower part, and the circular truncated cone-shaped groove with the large upper part and the small lower part is designed to be more beneficial to blanking.

As above a device for polyester chip feeding, the height of section dashpot is 10 ~ 80cm, section dashpot end opening internal diameter is the same with screw extruder feed inlet internal diameter, the dashpot end opening internal diameter is 20 ~ 50cm, the section dashpot size is too big, then section detention time is long, section dashpot size is too little, the feeding of screw extruder then can appear unstably, the size range of above section dashpot can be according to screw extruder import size suitable adjustment, under the prerequisite of guaranteeing can all normally to feed, section detention time is less than 3 minutes.

The utility model discloses behind the section dashpot of addding between section unloading pipe and screw rod, through pressing from both sides the cover cooling, the means that lets in nitrogen gas, can let the section temperature fall below 35 ℃ before the feeding, no matter be conventional PET section like this, still differential low melting point, sections such as amorphous can all normally feed, can not glue at the feed inlet, low melting point has been solved, glue the wall when the feeding of differentiation sections such as amorphous, and not feeding scheduling problem, production stability has been improved, and through letting in nitrogen gas, let the section be in the nitrogen atmosphere, thermal oxidation degradation has been reduced, the dyeing homogeneity that the section was spun has been improved. These improvements are effective not only in chip spinning of chips of differentiated low melting point, amorphous and the like, but also in chip spinning of conventional PET polyester, and improve production efficiency and dyeing uniformity.

The introduced nitrogen is controlled to be 0.01-0.15 MPa through a ball valve and a pressure regulating valve, and when the pressure of the nitrogen is lower than 0.01MPa, the nitrogen cannot effectively replace air, so that the dyeing uniformity is not obviously improved; when the nitrogen pressure is higher than 0.15MPa, the pressure of the nitrogen is too high, so that the stability of feeding is influenced, the slices can jump in the buffer tank, the slices are not favorable for entering the screw, and the cost of the nitrogen is high, so that the introducing pressure of the nitrogen is controlled to be 0.01-0.15 MPa, preferably 0.05-0.10 MPa.

Has the advantages that:

the utility model discloses a feed arrangement for polyester chip through the design and the application of rotatory feeder and section dashpot, fundamentally has solved the difficult, easy problem of caking of section feeding such as differentiation low melting point, amorphous, has still improved the dyeing homogeneity, and dyeing stability improves about 20 ~ 30% to promoted the section widely and spun the progress of differentiation technique.

Drawings

Fig. 1 is a simple schematic diagram of a feeding device for polyester chips according to the present invention;

FIG. 2 is a schematic view of the rotary feeder and its installation position;

FIG. 3 is a schematic view of the slice buffer slot and its installation position;

the device comprises a drying tower 1, a rotary feeder 2, a slice discharging pipe 3, a slice buffer tank 4, a screw extruder 5, a filter 6, a melt conveying pipeline 7, a spinning box 8, a motor 9, a rotating shaft 10, blades 11, a cooling water inlet pipe 12, a cooling water outlet pipe 13, a nitrogen inlet pipe 14, a nitrogen pressure regulating valve 15 and a nitrogen ball valve 16.

Detailed Description

The present invention will be further described with reference to the following detailed description. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and such equivalents also fall within the scope of the appended claims.

A device for feeding polyester chips comprises a drying tower 1, a rotary feeder 2, a chip blanking pipe 3, a chip buffer tank 4, a screw extruder 5, a filter 6, a melt conveying pipeline 7 and a spinning manifold 8 in sequence as shown in figure 1; the rotary feeder 2 is arranged between the drying tower 1 and the slicing and blanking pipe 3, and the slicing and buffering groove 4 is arranged between the slicing and blanking pipe 3 and the screw extruder 5;

as shown in fig. 2, the rotary feeder 2 is composed of a motor 9, a rotating shaft 10 and 8-10 blades 11 with the thickness of 4-5 mm, the motor 9 is positioned at the outer side of the bottom of the drying tower 1, and the rotating shaft 10 and the blades 11 are positioned at the inner side of the bottom of the drying tower 1; the blades are fixed in the clamping grooves on the rotating shaft 10, and the rotating shaft 10 is connected to the motor 9; the drying tower 1 is in a circular table shape with a large upper part and a small lower part, the length of each blade is 2-10 mm smaller than the inner diameter of the bottom of the drying tower, the width of each blade is half of the inner diameter of the bottom of the drying tower, and the clearance between each blade and the inner wall of the drying tower is 1-5 mm;

as shown in fig. 3, the slicing buffer groove 4 is a circular truncated cone-shaped groove with a large upper part and a small lower part, the height is 10-80 cm, the inner diameter of a lower opening of the slicing buffer groove is the same as the inner diameter of a feed opening of a screw extruder, and the inner diameter of an upper opening of the slicing buffer groove is 20-50 cm; the slicing buffer tank 4 outside has the stainless steel jacket, and the jacket lower part has connect cooling water inlet pipe 12, and jacket upper portion has connect cooling water outlet pipe 13, and cooling water inlet pipe 12 and cooling water outlet pipe 13 are located the opposite side of jacket respectively, and slicing buffer tank 4 middle part is connected with nitrogen gas and advances pipe 14, and nitrogen gas advances to install nitrogen pressure regulating valve 15 and nitrogen ball valve 16 on the pipe 14 in proper order, and nitrogen pressure regulating valve 15 is closer for nitrogen ball valve 16 apart from slicing buffer tank 4.

The utility model discloses a concrete use of a device for polyester chip feeding:

the low melting point section is at drying tower 1 crystallization, after the drying, it is rotatory to drive the blade on the bearing through the motor of rotary feeder 2, low melting point section after will drying pushes away section material pipe entry, low melting point section falls to section dashpot 4 along section material pipe 3, the section dashpot plays the effect of section buffer storage, lead to the cooling water in the section dashpot surrounding jacket, the cooling water advances the height, reach and reduce ambient temperature, cool off the section, let the section not soften, do not condense, let in nitrogen gas simultaneously in the section dashpot, keep the malleation, let the air advance, low melting point section gets into screw extruder 5 melt and extrudes, reach filter 6 after, through melt pipeline 7, finally reach spinning box 8.

Claims

1. The utility model provides a device for polyester chip feeding, includes drying tower (1), section unloading pipe (3), screw extruder (5), filter (6), fuse-element conveying pipeline (7) and spinning manifold (8) in proper order, its characterized in that: a rotary feeder (2) is arranged between the drying tower (1) and the slice blanking pipe (3), and a slice buffer tank (4) is arranged between the slice blanking pipe (3) and the screw extruder (5);

the rotary feeder (2) consists of a motor (9), a rotating shaft (10) and blades (11), the motor (9) is positioned on the outer side of the bottom of the drying tower (1), and the rotating shaft (10) and the blades (11) are positioned on the inner side of the bottom of the drying tower (1); the blades are fixed in the clamping grooves on the rotating shaft (10), and the rotating shaft (10) is connected to the motor (9);

the section dashpot (4) outside has the cover of pressing from both sides, the cover lower part has connect cooling water inlet tube (12), cover upper portion has connect cooling water outlet pipe (13), and cooling water inlet tube (12) are located the opposite side of cover respectively with cooling water outlet pipe (13), section dashpot (4) middle part is connected with nitrogen gas and advances pipe (14), nitrogen gas advances to install nitrogen gas pressure regulating valve (15) and nitrogen gas ball valve (16) on pipe (14) in proper order, and nitrogen gas pressure regulating valve (15) are more near apart from section dashpot (4) for nitrogen gas ball valve (16).

2. The apparatus for feeding polyester chips as claimed in claim 1, wherein the number of the blades (11) is 3 to 15.

3. An apparatus for feeding polyester chips as claimed in claim 2, wherein the number of the blades (11) is 8 to 10.

4. A device for feeding polyester chips according to claim 3, wherein the drying tower (1) has a truncated cone shape with a large top and a small bottom.

5. A device for feeding polyester chips as claimed in claim 4, wherein the length of the blades (11) is 2-10 mm smaller than the inner diameter of the bottom of the drying tower (1), the width of the blades (11) is half of the inner diameter of the bottom of the drying tower (1), and the gap between the blades (11) and the inner wall of the drying tower (1) is 1-5 mm.

6. A device for feeding polyester chips according to claim 5, wherein the thickness of the blades (11) is 2 to 8 mm.

7. A device for feeding polyester chips according to claim 6, wherein the thickness of the blades (11) is 4 to 5 mm.

8. The apparatus for feeding polyester chips as claimed in claim 1, wherein the chip buffer groove (4) is a circular truncated cone-shaped groove with a large top and a small bottom.

9. The device for feeding the polyester chips as claimed in claim 8, wherein the height of the chip buffer tank (4) is 10-80 cm, the inner diameter of the lower opening of the chip buffer tank (4) is the same as the inner diameter of the feed inlet of the screw extruder (5), and the inner diameter of the upper opening of the chip buffer tank (4) is 20-50 cm.