A device for reducing the metal content in chemical fiber raw materials

Abstract

The utility model discloses a device that reduces the metal content in chemical fiber raw materials in the field of chemical fiber polyester spinning, including conveying cylinder, the opening of feeding cylinder is equipped with strong magnetic grid, and the inside coaxial of outer shell is provided with vertical strong magnetic cylinder, and the inner wall of outer shell is circular, and the outer periphery of strong magnetic cylinder and the inner wall of outer shell leave annular flow channel, and the annular flow channel is linked with the discharge cylinder, and the outer periphery of straight cylinder section is fixed with the inner wall of outer shell through a plurality of connecting pieces, and the lower end of outer shell is connected with metal detector. The utility model can be used in the production of regenerated fiber, reduces the metal mixed amount in raw materials, reduces the harm of metal to the screw rod of subsequent equipment, thereby prolongs the use time of screw rod screw thread original part.

Description

Technical Field

[0001] This utility model belongs to the field of chemical fiber polyester spinning, and specifically relates to a device for reducing the metal content in chemical fiber raw materials. Background Technology

[0002] Currently, most polyester spinning equipment uses continuous polymerization spinning or indirect spinning through continuous drying of chips and foamed materials to produce functional and differentiated colored polyester fibers.

[0003] Polyester spinning is a synthetic fiber made from polyethylene terephthalate (PET) through melt spinning and cutting processes. It has high tensile strength, excellent heat-setting properties, resistance to acid and alkali corrosion, and low moisture absorption, making it widely used in textiles, home textiles, and industrial products. Recycled polyester utilizes polyester fabrics, waste polyester bottle flakes, waste spinning fibers, foam materials, and pulp blocks as raw materials. These synthetic fiber raw materials are prone to containing metal objects. The problem is that the high metal content in the raw materials affects the normal operation of the screw in subsequent processes, impacting the continuity of spinning. Utility Model Content

[0004] The purpose of this invention is to provide a device for reducing the metal content in chemical fiber raw materials, which can reduce the metal content in the raw materials, extend the service life of the screw thread components of the screw extruder, and thus reduce costs.

[0005] The purpose of this utility model is achieved as follows: A device for reducing the metal content in chemical fiber raw materials includes an inclined conveying cylinder, an axially arranged conveying auger inside the conveying cylinder, a feed cylinder at the downward end of the conveying cylinder, and a discharge cylinder at the upward end of the conveying cylinder. A strong magnetic grid is provided at the opening of the feed cylinder. The feed cylinder has a rectangular cross-section in the horizontal direction. A vertical outer casing is connected to the lower end of the discharge cylinder. A vertical strong magnetic cylinder is coaxially arranged inside the outer casing. The inner wall of the outer casing is circular. An annular flow channel is left between the outer circumference of the strong magnetic cylinder and the inner wall of the outer casing. The flow channel is connected to the discharge cylinder. The strong magnetic cylinder includes a straight section. The upper and lower ends of the straight section are respectively provided with a first conical section and a second conical section. The cross-sectional area of ​​the first conical section increases from top to bottom in the horizontal direction, and the cross-sectional area of ​​the second conical section decreases from top to bottom in the horizontal direction. The outer periphery of the straight section is fixed to the inner wall of the outer casing by several connecting parts. A metal detector is connected to the lower end of the outer casing. The lower end of the metal detector is provided with a qualified raw material discharge port. The side of the metal detector is provided with a metal-containing raw material discharge port. A collection bag is provided corresponding to the metal-containing raw material discharge port.

[0006] When this utility model is in operation, the material enters the conveying cylinder through the feeding cylinder. The strong magnetic grid adsorbs the metal material once. The chemical fiber raw material enters the conveying cylinder through the strong magnetic grid. The conveying auger transports the material upward to the high point and then enters the annular flow channel between the outer shell and the strong magnetic cylinder through the discharge cylinder. The strong magnetic cylinder adsorbs the metal material a second time. The chemical fiber raw material falls downward and enters the metal detector. The metal material is detected a third time and discharged through the metal-containing raw material discharge outlet. The chemical fiber raw material is discharged through the qualified raw material discharge outlet. Compared with the prior art, the beneficial effects of this utility model are: This utility model can be used in a screw indirect spinning device. It adopts multi-stage strong magnetic and metal detection to separate metal objects in the raw material, reduce the risk of metal objects entering the screw, extend the service life of the screw thread components, and thus reduce maintenance costs. The significant advantages of this utility model are: (1) low investment cost; (2) good metal separation effect; (3) long service life of screw thread components; (4) low maintenance cost.

[0007] As a further improvement of this utility model, several vertical support frames are provided on the lower side of the conveying cylinder. The conveying cylinder is supported by the support frames.

[0008] To facilitate feeding and discharging of materials into the conveyor cylinder, the opening of the feed cylinder faces upward, the opening of the discharge cylinder faces downward, and the downward-facing end of the conveyor cylinder extends into the pit.

[0009] As a further improvement of this utility model, the lower end of the discharge cylinder is provided with a flared section, the flow area of ​​which increases from top to bottom. A flange one is provided on the outer periphery of the flared section, and flange two and flange three are respectively provided at the upper and lower ends of the outer casing. Flange one is fixed to flange two with fasteners. A flange four is provided on the upper outer periphery of the metal detector, and flange three is fixed to flange four. The outer casing is connected to the discharge cylinder via flanges, and the metal detector is connected to the outer casing via flanges.

[0010] As a further improvement of this utility model, the connecting member is a radially arranged connecting rod. The outer circumference of the straight section is fixed to the inner wall of the outer casing by at least two radially distributed connecting rods. The strong magnetic cylinder is fixed to the outer casing by the connecting rods, and the conical sections one and two allow the chemical fiber raw materials to slide down smoothly, avoiding material accumulation.

[0011] As a further improvement of this utility model, the metal detector is a channel-type metal detector.

[0012] As a further improvement of this utility model, the strong magnetic grid is rectangular, and the strong magnetic grid includes a rectangular outer frame, with a number of intersecting horizontal and vertical spacers inside the outer frame. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a top view of a strong magnetic grid.

[0015] Figure 3 for Figure 1 A magnified view of a portion of the image.

[0016] Figure 4 This is a cross-sectional view of the strong magnetic cylinder and the outer casing.

[0017] Among them, 1 is the conveying cylinder, 2 is the feeding cylinder, 3 is the discharging cylinder, 3a is the flared section, 4 is the strong magnetic grid, 4a is the outer frame, 4b is the partition strip, 5 is the strong magnetic cylinder, 501 is the straight cylinder section, 502 is the first conical section, 503 is the second conical section, 6 is the annular flow channel, 7 is the connecting piece, 8 is the metal detector, 8a is the qualified raw material discharge port, 8b is the metal-containing raw material discharge port, 9 is the collection bag, 10 is the support frame, 11 is the pit, 12 is the flange one, 13 is the flange two, 14 is the flange three, 15 is the flange four, and 16 is the outer casing. Detailed Implementation

[0018] like Figure 1-4As shown, this is a device for reducing the metal content in chemical fiber raw materials, including an inclined conveying cylinder 1, with several vertical support frames 10 on the lower side of the conveying cylinder 1; the support frames 10 support the conveying cylinder 1; a conveying auger is arranged axially inside the conveying cylinder 1; a feed cylinder 2 is arranged at the lower end of the conveying cylinder 1, and a discharge cylinder 3 is arranged at the upper end of the conveying cylinder 1. To facilitate feeding and discharging of the conveying cylinder 1, the opening of the feed cylinder 2 faces upward, the opening of the discharge cylinder 3 faces downward, and the opening of the lower end of the conveying cylinder 1 faces downward. The end extends into the pit 11; a strong magnetic grid 4 is provided at the opening of the feed cylinder 2. The strong magnetic grid 4 is rectangular and includes a rectangular outer frame 4a. Several intersecting horizontal and vertical partitions 4b are provided inside the outer frame 4a; the feed cylinder 2 has a rectangular cross-section along the horizontal direction; the lower end of the discharge cylinder 3 is connected to a vertical outer cover 16; a vertical strong magnetic cylinder 5 is coaxially arranged inside the outer cover 16; the inner wall of the outer cover 16 is circular; an annular flow channel 6 is left between the outer periphery of the strong magnetic cylinder 5 and the inner wall of the outer cover 16. The annular flow channel 6 is connected to the discharge cylinder 3. The strong magnetic cylinder 5 includes a straight cylindrical section 501. The upper and lower ends of the straight cylindrical section 501 are coaxially provided with a first conical section 502 and a second conical section 503. The cross-sectional area of ​​the first conical section 502 increases from top to bottom in the horizontal direction, while the cross-sectional area of ​​the second conical section 503 decreases from top to bottom in the horizontal direction. The outer periphery of the straight cylindrical section 501 is fixed to the inner wall of the outer casing 16 by several connecting parts 7. The connecting parts 7 are radially arranged connecting rods. The outer periphery is fixed to the inner wall of the outer casing 16 by at least two radially distributed connecting rods. The strong magnetic cylinder 5 is fixed to the outer casing 16 by the connecting rods. The first conical section 502 and the second conical section 503 allow the chemical fiber raw material to slide down smoothly and avoid material accumulation. A metal detector 8 is connected to the lower end of the outer casing 16. The lower end of the metal detector 8 is provided with a qualified raw material discharge port 8a. The side of the metal detector 8 is provided with a metal raw material discharge port 8b. A collection bag 9 is provided corresponding to the metal raw material discharge port 8b.

[0019] The lower end of the discharge cylinder 3 is provided with a flared section 3a, the flow area of ​​which increases from top to bottom. A flange 12 is provided on the outer periphery of the flared section 3a. Flanges 13 and 14 are provided at the upper and lower ends of the outer casing 16, respectively. Flange 12 is fixed to flange 13 by fasteners. A flange 15 is provided on the upper outer periphery of the metal detector 8, and flanges 14 and 15 are fixed together. The outer casing 16 is connected to the discharge cylinder 3 via flanges, and the metal detector 8 is connected to the outer casing 16 via flanges.

[0020] Metal detector 8 is a channel-type metal detector 8.

[0021] When this utility model is in operation, the material enters the conveying cylinder 1 through the feeding cylinder 2. The strong magnetic grid 4 adsorbs the metal material once. The chemical fiber raw material enters the conveying cylinder 1 through the strong magnetic grid 4. After the conveying auger transports the material upward to the high point, it enters the annular flow channel 6 between the outer shell 16 and the strong magnetic cylinder 5 through the discharge cylinder 3. The strong magnetic cylinder 5 adsorbs the metal material a second time. The chemical fiber raw material falls downward and enters the metal detector 8. The metal material is detected a third time and discharged through the metal raw material discharge port 8b. The chemical fiber raw material is discharged through the qualified raw material discharge port 8a. The strong magnetic grid 4 allows for maximum flow of raw materials and can adsorb large metal objects onto the strong magnetic block. After feeding, the metal adsorbed on the strong magnetic block is manually removed. The conveying auger ensures that the fed raw materials can be conveyed upwards. The strong magnetic cylinder 5 allows residual metal objects in the raw materials to be adsorbed onto the strong magnet in the center of the strong magnetic cylinder 5 when the raw materials pass through it. After feeding, the door of the outer cover 16 is opened and the metal adsorbed on the strong magnet is manually removed. The metal detector 8 ensures that if the raw materials coming out of the strong magnetic cylinder 5 contain metal, they are discharged into the collection bag 9.

[0022] The beneficial effects of this utility model are as follows: This utility model can be used in a screw indirect spinning device, using multi-stage strong magnets and metal detection to separate metal objects in the raw materials, reducing the risk of metal objects entering the screw, extending the service life of the screw thread components, and thus reducing maintenance costs. The advantages of this utility model are: (1) low investment cost; (2) good metal separation effect; (3) long service life of screw thread components; (4) low maintenance cost.

[0023] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. An apparatus for reducing the metal content in chemical fiber raw materials, comprising an inclined conveying cylinder, an axially arranged conveying auger inside the conveying cylinder, a feed cylinder at the downward-facing end of the conveying cylinder, and a discharge cylinder at the upward-facing end of the conveying cylinder, characterized in that, The feed cylinder has a strong magnetic grid at its opening. The feed cylinder has a rectangular cross-section in the horizontal direction. The lower end of the discharge cylinder is connected to a vertical outer casing. A vertical strong magnetic cylinder is coaxially arranged inside the outer casing. The inner wall of the outer casing is circular. An annular flow channel is left between the outer circumference of the strong magnetic cylinder and the inner wall of the outer casing. The annular flow channel is connected to the discharge cylinder. The strong magnetic cylinder includes a straight section. The upper and lower ends of the straight section are respectively coaxially provided with a first conical section and a second conical section. The cross-sectional area of ​​the first conical section increases from top to bottom in the horizontal direction, and the cross-sectional area of ​​the second conical section decreases from top to bottom in the horizontal direction. The outer circumference of the straight section is fixed to the inner wall of the outer casing by several connecting parts. A metal detector is connected to the lower end of the outer casing. The lower end of the metal detector is provided with a qualified raw material discharge port. The side of the metal detector is provided with a metal-containing raw material discharge port. A collection bag is provided corresponding to the metal-containing raw material discharge port.

2. The device for reducing the metal content in chemical fiber raw materials according to claim 1, characterized in that, Several vertical support frames are provided on the lower side of the conveying cylinder.

3. The apparatus for reducing the metal content in chemical fiber raw materials according to claim 1 or 2, characterized in that, The feed cylinder has an upward opening, the discharge cylinder has a downward opening, and the downward-facing end of the conveying cylinder extends into the pit.

4. The apparatus for reducing the metal content in chemical fiber raw materials according to claim 1 or 2, characterized in that, The lower end of the discharge cylinder is provided with a flared section, and the flow area of ​​the flared section increases from top to bottom. Flange 1 is provided on the outer periphery of the flared section. Flange 2 and Flange 3 are provided at the upper and lower ends of the outer cover, respectively. Flange 1 is fixed to Flange 2 by fasteners. Flange 4 is provided on the upper outer periphery of the metal detector. Flange 3 is fixed to Flange 4.

5. The device for reducing the metal content in chemical fiber raw materials according to claim 4, characterized in that, The connecting member is a radially arranged connecting rod, and the outer periphery of the straight section is fixed to the inner wall of the outer casing by at least two circumferentially distributed radial connecting rods.

6. The apparatus for reducing the metal content in chemical fiber raw materials according to claim 1 or 2, characterized in that, The metal detector is a channel-type metal detector.

7. The apparatus for reducing the metal content in chemical fiber raw materials according to claim 1 or 2, characterized in that, The strong magnetic grid is rectangular, and includes a rectangular outer frame with several intersecting horizontal and vertical spacers inside the outer frame.

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