Antimony-free polyester chip and preparation device thereof

Abstract

The invention discloses an antimony-free polyester chip and a preparation device thereof. Relates to the technical field of polyester chip production. Comprising a drying mechanism, the drying mechanism is used for removing moisture in materials, the drying mechanism comprises a rack, an upper roller set and a lower roller set, the upper roller set and the lower roller set are arranged on the rack, each of the upper roller set and the lower roller set is composed of a plurality of rollers, an upper water absorption belt is wound around the upper roller set, and a lower water absorption belt is wound around the lower roller set. The distance between the bottom of the upper water absorption belt and the upper water absorption belt is smaller than or equal to the thickness of materials. One side of the machine frame is a feeding end, the other side of the machine frame is a discharging end, materials enter the position between the upper water absorption belt and the lower water absorption belt through the feeding end, and heating units used for drying the materials are arranged on the inner side of the upper water absorption belt and the inner side of the lower water absorption belt. The upper water absorption belt and the lower water absorption belt are matched with the heating unit, so that water in materials can be efficiently removed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polyester chip production, in particular to a non-antimony polyester chip and a preparation device thereof. BACKGROUND

[0002] Polyethylene terephthalate (PET) is the largest synthetic fiber material in the world in terms of production and use. The use of antimony-based catalysts in most PETs can cause environmental pollution and the reduction and accumulation of heavy metal antimony can increase the pressure on the spinning assembly. Non-antimony polyester chips solve the problem of the presence of heavy metal antimony from the raw material end, which is of great significance to the "green development" of the overall textile industry chain, especially the regenerated polyester industry. At the same time, as a hydrophilic raw material, polyester chips need to be sealed after dehydration.

[0003] In the Chinese patent file with publication number CN219494776U, a polyester chip dryer is disclosed, and specifically a vacuum centrifugal drying cylinder, a feeding device arranged at the top of one end of the vacuum centrifugal drying cylinder, and a discharge pipe arranged at the bottom of the other end of the vacuum centrifugal drying cylinder. The feeding device includes a feeding hopper and a feeding pipe arranged vertically. The feeding hopper includes a plurality of conical cylinders connected in sequence in the vertical direction. The conical cylinders can rotate coaxially in the horizontal direction, and the adjacent conical cylinders rotate in opposite directions. The feeding pipe is fixedly installed on the upper surface of the vacuum centrifugal drying cylinder. The utility model divides the feeding hopper into a plurality of conical cylinders connected in sequence, and rotates the adjacent conical cylinders in opposite directions, thereby generating various different directions of torsion on the polyester chip raw materials in the feeding hopper, promoting their mutual separation during the falling process, and further allowing the materials to enter the vacuum centrifugal drying cylinder in a more dispersed state.

[0004] However, the shape of the feeding hopper in the above-mentioned patent inevitably leads to the agglomeration of the materials, thereby affecting the drying effect of the materials. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the present application provides a non-antimony polyester chip and a preparation device thereof.

[0006] The technical scheme adopted by the present application is as follows: a non-antimony polyester chip preparation device, which includes a drying mechanism for removing moisture inside the materials. The drying mechanism includes a rack and an upper roller group and a lower roller group arranged on the rack. The upper roller group and the lower roller group each consist of a plurality of rollers. An upper water absorption belt is wound around the upper roller group, and a lower water absorption belt is wound around the lower roller group. The distance between the bottom of the upper water absorption belt and the upper water absorption belt is less than or equal to the thickness of the materials. The one side of the rack is the feeding end and the other side is the discharging end, the material enters into the upper water absorption belt and the lower water absorption belt through the feeding end, the inner side of the upper water absorption belt and the inner side of the lower water absorption belt are provided with heating units for drying the material.

[0007] Optionally, any one roller in the upper roller group and any one roller in the lower roller group are driven by electric motors, the rotation direction of the upper roller group driving the upper water absorption belt is opposite to the rotation direction of the lower roller group driving the lower water absorption belt.

[0008] Optionally, the end of the lower water absorption belt close to the feeding end is located outside the end of the upper water absorption belt close to the feeding end, and the port of the feeding end is located above the lower water absorption belt.

[0009] Optionally, a material combing unit is arranged on the rack, the material combing unit is located at the port of the feeding end and is attached to the top of the lower water absorption belt, and the material combing unit is used for combing the material input in a flat pile.

[0010] Optionally, the material combing unit comprises a base plate and a plurality of partitions, the base plate extends along the width direction of the rack, the end of the base plate is connected with the rack through a connecting plate, and the plurality of partitions are arranged on the bottom of the base plate and are arranged at intervals along the length direction of the base plate, the distance between two adjacent partitions is greater than or equal to the maximum outer diameter of the material.

[0011] Optionally, a pair of material guide plates are arranged on the side wall of the base plate, the opposite sides of the pair of material guide plates are provided with arc-shaped material guide slopes, a feeding area is formed between the pair of material guide slopes, and the material enters into the feeding area through the feeding end. A vibration motor is arranged on the top of the base plate, and the vibration motor is used for transmitting exciting force to the base plate and the partitions.

[0012] Optionally, the heating unit comprises a loading plate and an electric heating coil arranged on the loading plate, a plurality of loading areas are arranged on the loading plate, and the electric heating coil is adaptively arranged in the loading area. The electric heating coil of the heating unit located above is used for transmitting heat towards the bottom of the upper water absorption belt, and the electric heating coil of the heating unit located below is used for transmitting heat towards the top of the lower water absorption belt.

[0013] Optionally, the loading area penetrates through the loading plate along the thickness direction of the loading plate, and a fan is further arranged in the loading area, and the fan and the electric heating coil are arranged at intervals along the thickness direction of the loading plate. The fan of the heating unit located at the upper part is used to deliver hot air towards the bottom of the upper water absorption belt, and the fan of the heating unit located at the lower part is used to deliver hot air towards the bottom of the lower water absorption belt.

[0014] Optionally, one side of the loading plate is provided with a rotating shaft, both sides of the rotating shaft are arranged on the rack, the other side of the loading plate is provided with a support plate, two support plates between the two loading plates are provided with a hydraulic cylinder, and the hydraulic cylinder is used to drive the loading plate to rotate around the rotating shaft.

[0015] A kind of antimony-free polyester chip is made by an antimony-free polyester chip preparation device.

[0016] In summary, the present application includes the following beneficial technical effects: The present application utilizes the upper water absorption belt and the lower water absorption belt to cooperate with the heating unit to remove the moisture inside the material, solves the problem of material dehydration, meets the requirement of high-quality antimony-free polyester chip preparation on material drying; the setting of the upper water absorption belt and the lower water absorption belt and the distance therebetween being less than or equal to the thickness of the material can form extrusion on the material, which is beneficial to the moisture in the material being absorbed by the water absorption belt, and improves the drying effect; the heating unit provides heat for the material, promotes the evaporation of the moisture in the material, and further improves the drying effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic perspective view of the present application Figure 1 ; Figure 2 is a schematic perspective view of the present application Figure 2 ; Figure 3 is a schematic perspective view of the combing unit Figure 4 is a reference diagram of the assembly state of the upper water absorption belt, the lower water absorption belt and the heating unit; Figure 5 is a schematic perspective view of the heating unit.

[0018] In the figure: 1, rack; 11, feeding end; 12, discharging end; 2, upper roller group; 3, lower roller group; 4, upper water absorption belt; 5, lower water absorption belt; 6, heating unit; 61, loading plate; 611, rotating shaft; 612, support plate; 613, hydraulic cylinder; 62, electric heating coil; 63, loading area; 64, fan; 7, combing unit; 71, base plate; 72, spacer; 73, connecting plate; 74, guide plate; 740, guide slope; 75, feeding area; 76, vibration motor. DETAILED DESCRIPTION

[0019] The application will be described in detail below with specific embodiments. The following examples will help those skilled in the art to further understand the application, but do not limit the application in any form. It should be noted that for those skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made. These are within the scope of the application.

[0020] As shown in Figure 1-5 The antimony-free polyester chip preparation device includes a drying mechanism, the drying mechanism includes a rack 1, an upper roller group 2, a lower roller group 3, an upper water absorption belt 4, a lower water absorption belt 5 and a heating unit 6, the upper roller group 2 and the lower roller group 3 are arranged on the rack 1, the upper water absorption belt 4 is wound on the upper roller group 2, and the lower water absorption belt 5 is wound on the lower roller group 3. The distance between the bottom of the upper water absorption belt 4 and the lower water absorption belt 5 is less than or equal to the thickness of the material, one side of the rack 1 is a feeding end 11, and the other side is a discharging end 12. The material enters between the upper water absorption belt 4 and the lower water absorption belt 5 from the feeding end 11. The inner side of the upper water absorption belt 4 and the inner side of the lower water absorption belt 5 are provided with the heating unit 6. Such arrangement enables the material to be clamped and conveyed between the upper and lower water absorption belts, and at the same time, the material is heated by the heating unit 6, which can effectively remove the moisture inside the material.

[0021] Specifically, the upper roller group 2 is composed of a plurality of rollers, which are usually cylindrical. The rollers are mounted on the rack 1 through bearings, which can ensure that the rollers can rotate flexibly. The rollers are arranged parallel to each other to ensure that the upper water absorption belt 4 and the lower water absorption belt 5 can be stably wound thereon. The upper water absorption belt 4 and the lower water absorption belt 5 are usually made of materials with good water absorption, such as water-absorbing fibers. The upper water absorption belt 4 is tightly wound on the rollers of the upper roller group 2. When the rollers rotate, they will drive the upper water absorption belt 4 to rotate in a cycle. The combination of the upper roller group 2 and the upper water absorption belt 4 enables the upper water absorption belt 4 to continuously operate under the drive of the rollers, thereby conveying and absorbing water of the material. The lower water absorption belt 5 also operates by the same principle. The lower water absorption belt 5 is tightly matched with the lower roller group 3. The combination of the lower roller group 3 and the lower water absorption belt 5 cooperates with the upper roller group 2 and the upper water absorption belt 4 to jointly achieve clamping and conveying of the material. During the conveying process, the upper and lower water absorption belts can simultaneously absorb the moisture on the surface of the material.

[0022] The heating unit 6 comprises a loading plate 61 and an electric heating coil 62. The loading plate 61 is generally flat, and a plurality of loading areas 63 are arranged on the loading plate 61. The electric heating coil 62 is arranged in the loading area 63. The electric heating coil 62 is generally made of resistance wire, which generates heat when powered, and then transmits heat to the loading plate 61, the upper water absorption belt 4 and the lower water absorption belt 5. The electric heating coil 62 of the upper heating unit 6 transmits heat to the bottom of the upper water absorption belt 4, and the electric heating coil 62 of the lower heating unit 6 transmits heat to the top of the lower water absorption belt 5. In this way, the upper water absorption belt 4 and the lower water absorption belt 5 are heated, and the material sandwiched therebetween is heated and dried, and the evaporation of water in the material is accelerated.

[0023] Further, any one of the rollers in the upper roller group 2 and any one of the rollers in the lower roller group 3 are driven by an electric motor. The driving direction of the upper water absorption belt 4 driven by the upper roller group 2 is opposite to the driving direction of the lower water absorption belt 5 driven by the lower roller group 3. When the electric motor is started, the corresponding roller is driven to rotate. Since the driving directions of the upper and lower water absorption belts driven by the upper and lower roller groups are opposite, the material is subjected to friction in different directions between the upper and lower water absorption belts, which can be better conveyed, and also helps the material to turn over during conveying, so that each part of the material can fully contact the water absorption belt and heat, thereby improving the drying effect. The end of the lower water absorption belt 5 close to the feeding end 11 is located outside the end of the upper water absorption belt 4 close to the feeding end 11, and the port of the feeding end 11 is located above the lower water absorption belt 5. In this way, when the material enters from the feeding end 11, it can first fall on the lower water absorption belt 5, so as to facilitate the material to enter between the upper and lower water absorption belts stably.

[0024] The rack 1 is provided with a material combing unit 7, which is located at the port of the feeding end 11 and is attached to the top of the lower water absorption belt 5. The material combing unit 7 is used to comb the material input in a flat and stacked manner. The material combing unit 7 comprises a base plate 71 and a plurality of spacers 72. The base plate 71 extends along the width direction of the rack 1, and the end thereof is connected to the rack 1 through a connecting plate 73, which can be fixed by welding or bolt connection. The base plate 71 is generally long strip-shaped, and the spacers 72 are arranged on the bottom of the base plate 71 and are spaced apart along the length direction of the base plate 71. The distance between any two adjacent spacers 72 is greater than or equal to the maximum outer diameter of the material. The spacer 72 can be a thin sheet, and the material thereof is the same as that of the base plate 71. When the material enters from the feeding end 11, the spacers 72 of the material combing unit 7 can comb the stacked material, so that the material is evenly distributed on the lower water absorption belt 5, thereby avoiding material aggregation and improving the subsequent drying effect.

[0025] The sidewall of the substrate 71 is provided with a pair of material guide plates 74, and the opposite sides of the pair of material guide plates 74 are respectively provided with arc-shaped material guide slopes 740. The pair of material guide slopes 740 form a feeding area 75 between them, and the material enters the feeding area 75 through the feeding end 11. The material guide slopes 740 of the material guide plates 74 can guide the material to smoothly enter the feeding area 75. The top of the substrate 71 is provided with a vibration motor 76 for transmitting a vibration force to the substrate 71 and the spacer 72. The vibration motor 76 is generally a small electromagnetic vibration motor 76. When the vibration motor 76 is started, the substrate 71 and the spacer 72 will vibrate, further promoting the dispersion and carding of the material.

[0026] The loading area 63 penetrates the loading plate 61 along the thickness direction of the loading plate 61, and the loading area 63 is further provided with a fan 64. The fan 64 and the electric heating coil 62 are arranged in the thickness direction of the loading plate 61 and are spaced apart. The fan 64 has a good air conveying effect. The fan 64 of the upper heating unit 6 is arranged to convey hot air towards the bottom of the upper water absorption belt 4, and the fan 64 of the lower heating unit 6 is arranged to convey hot air towards the bottom of the lower water absorption belt 5. The arrangement of the fan 64 can dry the upper water absorption belt 4 and the lower water absorption belt 5 after water absorption by the heat generated by the electric heating coil 62, so that the upper water absorption belt 4 and the lower water absorption belt 5 can be recycled.

[0027] One side of the loading plate 61 is provided with a rotating shaft 611, and the two sides of the rotating shaft 611 are arranged on the rack 1. The other side of the loading plate 61 is provided with a support plate 612, and the two support plates 612 of the two loading plates 61 are provided with a hydraulic cylinder 613. When the hydraulic cylinder 613 works, it can drive the loading plate 61 to rotate around the rotating shaft 611. By adjusting the angle of the loading plate 61, the distance and angle between the heating unit 6 and the upper water absorption belt 4 and the lower water absorption belt 5 can be changed, so that the heating effect and range can be flexibly adjusted according to different materials and drying needs.

[0028] The implementation principle of the embodiment is that the antimony-free polyester chip preparation device drives the upper water absorption belt 4 and the lower water absorption belt 5 to rotate circularly through the upper roller group 2 and the lower roller group 3. The material enters from the feeding end 11, is uniformly distributed on the lower water absorption belt 5 after carding by the carding unit 7, and then enters between the upper water absorption belt 4 and the lower water absorption belt 5. The upper water absorption belt 4 and the lower water absorption belt 5 clamp and convey the material, and the electric heating coil 62 of the heating unit 6 generates heat to heat and dry the material, accelerate the evaporation of the water in the material, and the water is absorbed by the upper water absorption belt 4 and the lower water absorption belt 5. Moreover, the opposite rotating directions of the upper water absorption belt 4 and the lower water absorption belt 5 and the arrangement of the vibration motor 76 and the rotatable loading plate 61 further improve the drying effect and uniformity of the material.

[0029] The application discloses a kind of antimony-free polyester chips, which are prepared by an antimony-free polyester chip preparation device.In the preparation process, the raw material of the antimony-free polyester chips is treated by the drying mechanism of the antimony-free polyester chip preparation device to remove the internal moisture.After such drying treatment, the moisture content of the obtained antimony-free polyester chips is greatly reduced, and the quality is improved, which is beneficial to subsequent processing and use, meets the requirements of the overall textile industry chain "green development", and is of great significance to the regenerated polyester industry.

[0030] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A device for preparing antimony-free polyester chips, comprising a drying mechanism for removing moisture from the material, characterized in that: The drying mechanism comprises a frame (1) and an upper roller group (2) and a lower roller group (3) arranged on the frame (1); the upper roller group (2) and the lower roller group (3) are both composed of a plurality of rollers; an upper water-absorbing belt (4) is wound around the upper roller group (2); a lower water-absorbing belt (5) is wound around the lower roller group (3); and a distance between the bottom of the upper water-absorbing belt (4) and the upper water-absorbing belt (4) is less than or equal to the thickness of the material; One side of the frame (1) is a feed end (11), and the other side is a discharge end (12). The material enters between the upper water absorption belt (4) and the lower water absorption belt (5) through the feed end (11). The inner side of the upper water absorption belt (4) and the inner side of the lower water absorption belt (5) are both provided with a heating unit (6) for drying the material.

2. The device for preparing antimony-free polyester chips according to claim 1, wherein: Any one of the rollers in the upper roller group (2) and any one of the rollers in the lower roller group (3) are driven by an electric motor, and the rotation direction of the upper water-absorbing belt (4) driven by the upper roller group (2) is opposite to the rotation direction of the lower water-absorbing belt (5) driven by the lower roller group (3).

3. The device for preparing antimony-free polyester chips according to claim 1, wherein: The end of the lower water absorption belt (5) close to the feed end (11) is located outside the end of the upper water absorption belt (4) close to the feed end (11), and the port of the feed end (11) is located above the lower water absorption belt (5).

4. The device for preparing antimony-free polyester chips according to claim 3, characterized in that: The frame (1) is provided with a combing unit (7), which is located at the port of the feed end (11) and is in contact with the top of the lower water-absorbing belt (5). The combing unit (7) is used to comb the material that is flattened and input in a pile shape.

5. The device for preparing antimony-free polyester chips according to claim 4, characterized in that: The combing unit (7) comprises a base plate (71) and a plurality of spacers (72), wherein the base plate (71) extends along the width direction of the frame (1), and the end of the base plate (71) is connected to the frame (1) via a connecting plate (73), and the plurality of spacers (72) are arranged at the bottom of the base plate (71) and spaced apart along the length direction of the base plate (71), and the distance between two adjacent spacers (72) is greater than or equal to the maximum outer diameter of the material.

6. The device for preparing antimony-free polyester chips according to claim 5, characterized in that: A pair of guide plates (74) are provided on the side walls of the base plate (71), and arc-shaped guide slopes (740) are provided on opposite sides of the pair of guide plates (74). A feeding area (75) is formed between the pair of guide slopes (740), and the material enters the feeding area (75) through the feeding end (11); A vibration motor (76) is provided on the top of the substrate (71), and the vibration motor (76) is used to transmit an exciting force to the substrate (71) and the spacer (72).

7. The device for preparing antimony-free polyester chips according to claim 5, characterized in that: The heating unit (6) comprises a loading plate (61) and an electric heating coil (62) arranged on the loading plate (61); a plurality of loading areas (63) are provided on the loading plate (61); the electric heating coil (62) is adaptively installed in the loading areas (63); The electric heating coil (62) of the upper heating unit (6) is used to transport heat toward the bottom of the upper water absorption belt (4), and the electric heating coil (62) of the lower heating unit (6) is used to transport heat toward the top of the lower water absorption belt (5).

8. The device for preparing antimony-free polyester chips according to claim 7, characterized in that: The loading area (63) penetrates the loading plate (61) along the thickness direction of the loading plate (61), and a fan (64) is further provided in the loading area (63). The fan (64) and the electric heating coil (62) are spaced apart along the thickness direction of the loading plate (61); The fan (64) of the upper heating unit (6) is used to deliver hot air toward the bottom of the upper water absorption belt (4), and the fan (64) of the lower heating unit (6) is used to deliver hot air toward the bottom of the lower water absorption belt (5).

9. The device for preparing antimony-free polyester chips according to claim 8, characterized in that: A rotating shaft (611) is provided on one side of the loading plate (61), and both sides of the rotating shaft (611) are arranged on the frame (1). A supporting plate (612) is provided on the other side of the loading plate (61), and a hydraulic cylinder (613) is provided between the two supporting plates (612) of the two loading plates (61). The hydraulic cylinder (613) is used to drive the loading plates (61) to rotate around the rotating shaft (611).

10. An antimony-free polyester chip, characterized in that: The device is made of the antimony-free polyester chip preparation device described in claim 9.

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