Fiber waste screening device

Abstract

The utility model relates to a fiber waste screening device, and belongs to the technical field of fiber waste collection. The device comprises a crushing mechanism, a conveying mechanism, a screening mechanism and a collecting mechanism, the conveying mechanism comprises a first conveying belt corresponding to an output port of the crushing mechanism and a second conveying belt corresponding to an input port of the collecting mechanism, and the screening mechanism is arranged between the first conveying belt and the second conveying belt; the screening mechanism comprises a first screening assembly used for screening metal impurities and a second screening assembly used for screening the fiber thickness, and the first screening assembly and the second screening assembly are arranged in the material conveying direction in a spaced mode. The device has the effect of improving the collection purity of the fiber waste.

Description

Technical Field

[0001] This application relates to the field of fiber waste collection technology, and in particular to a fiber waste screening device. Background Technology

[0002] In the field of textile waste treatment and recycling, the recycling and reuse of clothing fibers is receiving increasing attention. Fiber waste screening devices are designed to break down waste clothing and other textile materials into fine fibers for further processing into recycled fibers or filling materials, thereby achieving resource recycling.

[0003] Existing fiber recycling equipment typically includes a shredder, a conveyor belt, and a collection and discharge mechanism. To improve fiber purity, a screening structure is usually installed between the conveyor belt and the collection and discharge mechanism. However, the screening structure is generally a screen, which cannot pass through the screen because clothing waste may contain metal buttons, zippers, and other materials. This results in low purity of the fibers for subsequent recycling.

[0004] In view of the above-mentioned related technologies, this application provides a fiber waste screening device that can screen according to the crushing condition. Utility Model Content

[0005] In order to improve the purity of fiber waste collection, this application provides a fiber waste screening device.

[0006] The fiber waste screening device provided in this application adopts the following technical solution:

[0007] A fiber waste screening device includes a crushing mechanism, a conveying mechanism, a screening mechanism, and a collecting mechanism. The conveying mechanism includes a first conveyor belt corresponding to the output port of the crushing mechanism and a second conveyor belt corresponding to the input port of the collecting mechanism. The screening mechanism is disposed between the first and second conveyor belts and includes a first screening component for screening metallic impurities and a second screening component for screening fiber thickness. The first and second screening components are spaced apart along the material conveying direction.

[0008] By adopting the above technical solution, when using the above fiber waste screening device, the clothing waste is first crushed by the crushing mechanism. The crushed material enters the first screening component through the first conveyor belt. The first screening component screens out metal impurities in the material. Then it enters the second screening component to screen materials of different thicknesses. Finally, it is transported to the collection mechanism. The above two screening components improve the fiber purity in the collection mechanism and improve the recycling rate of resources.

[0009] Optionally, the first screening assembly includes a first screening frame, a permanent magnet drum rotatably mounted on the first screening frame, and a blow-off component disposed on the first screening frame.

[0010] By adopting the above technical solution, the structure of the first screening component is disclosed. When the material enters the first screening frame, the permanent magnet drum drives the material to rotate. The magnetic field formed inside the permanent magnet drum can adsorb metal impurities (buttons, zippers, etc.) in the material, thereby achieving screening of impurities and materials. When the permanent magnet drum rotates to a position where the magnetic field is weaker, the metal impurities are blown off by the blow-off component.

[0011] Optionally, the first screening frame is provided with a screening trough, the top of the screening trough is provided with a first feed inlet for material to be poured in, and the blow-off component is provided in the screening trough and located on the side of the permanent magnet roller away from the first feed inlet.

[0012] By adopting the above technical solution, the material is input from one side of the screening tank and rotates under the action of the permanent magnet drum. Metal impurities in the material are adsorbed onto the permanent magnet drum. When the metal impurities rotate to the other side, they are blown off by the blow-off component.

[0013] Optionally, the bottom of the screening tank is provided with a first discharge port, and the screening tank forms a limiting channel between the first discharge port and the blow-off component.

[0014] By adopting the above technical solution, the first discharge port is opened at the bottom of the screening tank, so that when the material rotates to the first discharge port, the material will fall automatically under the action of gravity, and the metal impurities will be adsorbed on the permanent magnet drum and continue to rotate, thereby realizing the screening of material and metal impurities.

[0015] Optionally, the blow-off component includes a centrifugal fan and an air supply pipe connected to the output end of the centrifugal fan, with the axis of the air supply pipe facing the surface of the permanent magnet drum.

[0016] By adopting the above technical solution, a structural barrier for the blow-off component is disclosed. The blow-off component can blow off the metal impurities on the surface of the permanent magnet drum when the magnetic field is weak, thereby reducing the amount of adsorption on the permanent magnet drum.

[0017] Optionally, the first screening frame is further provided with a scraper plate at the top of the screening tank for scraping off excess metal impurities.

[0018] By adopting the above technical solution, the scraper can scrape off the metal impurities that have not been blown off the permanent magnet drum.

[0019] Optionally, the scraper has a scraping arc surface on the side facing the blow-off component, and the scraper has multiple magnetic suction pieces on the scraping arc surface.

[0020] By adopting the above technical solution, the setting of the scraper arc surface can scrape off metal impurities, while removing excess material.

[0021] Optionally, the second screening assembly includes a second screening frame, two sets of screens spaced apart along the height direction on the second screening frame, a vibration drive for driving the second screening frame to vibrate, and a crushing roller group disposed on the outside of the second screening frame. The screens include a first screen and a second screen in sequence from top to bottom, and the aperture of the first screen and the second screen gradually decreases from top to bottom.

[0022] By adopting the above technical solution, the structure of the second screening component is disclosed. The second screening component divides the material into three layers from top to bottom. The material with larger size in the top layer is crushed again by the crushing roller group. The material in the middle is directly conveyed to the collection mechanism, and the material at the bottom is output from the bottom, reducing the impact on the fiber purity in the collection mechanism.

[0023] Optionally, the second screening frame has a second discharge port corresponding to the first screen and a third discharge port corresponding to the second screen on its side wall, and a fourth discharge port at the bottom of the second screening frame, with the crushing roller assembly corresponding to the second discharge port.

[0024] Optionally, the crushing roller assembly includes a crushing box, crushing rollers rotatably mounted on the crushing box, and a crushing drive component for driving the crushing rollers to rotate. The second screening component is provided with a material conveying plate corresponding to the output end of the crushing box.

[0025] By adopting the above technical solution, the structural composition of the crushing roller group is disclosed. The crushing roller group crushes the thick material twice and then directly feeds it into the material conveying plate, thereby improving the material recycling rate.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This application improves the fiber purity in the collection mechanism by first screening the metal impurities in the material under the action of the first screening component, and then screening the material of different thicknesses in the second screening component.

[0028] 2. This application, through the setting of the scraper, can scrape off the metal impurities that have not been blown off on the permanent magnet roller, and achieve adsorption and fixation under the action of the scraper arc surface and the magnetic suction plate;

[0029] 3. This application, by setting up two sets of screens and crushing rollers, can further crush larger materials through the crushing rollers while screening smaller materials. Attached Figure Description

[0030] Figure 1This is a schematic diagram of the overall structure of an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the structure of the first screening component in an embodiment of this application.

[0032] Figure 3 This is a cross-sectional schematic diagram of the first screening component according to an embodiment of this application.

[0033] Figure 4 This is a schematic diagram of the structure of the second screening component in an embodiment of this application.

[0034] Figure 5 This is a cross-sectional schematic diagram of the second screening component according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached drawings: 1. Crushing mechanism; 2. Conveying mechanism; 21. First conveyor belt; 22. Second conveyor belt; 3. Screening mechanism; 31. First screening assembly; 311. First screening frame; 312. Permanent magnet drum; 313. Blowing component; 3131. Centrifugal fan; 3132. Air supply pipe; 314. Screening tank; 3141. First feed inlet; 3142. First discharge outlet; 3143. Arc-shaped conveying channel; 3144. Limiting channel; 3145. Inclined guide plate; 315. Guide plate; 316. Baffle component; 3 161. Turbulence fan; 3162. Turbulence duct; 317. Scraper; 3171. Scraper arc surface; 3172. Magnetic suction plate; 32. Second screening assembly; 321. Second screening frame; 3211. Second discharge port; 3212. Third discharge port; 322. First screen; 323. Second screen; 324. Vibration drive component; 325. Crushing roller assembly; 3251. Crushing box; 3252. Crushing roller; 3253. Crushing drive component; 326. Material conveying plate; 327. Fixed bracket; 4. Collection mechanism. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] This application discloses a fiber waste screening device.

[0038] Reference Figure 1 A fiber waste screening device includes a crushing mechanism 1, a conveying mechanism 2, a screening mechanism 3, and a collection mechanism 4. The crushing mechanism 1 has the same structure as existing crushers, and the material in this application is waste clothing. The conveying mechanism 2 includes a first conveyor belt 21 and a second conveyor belt 22 along the material conveying direction. The starting end of the first conveyor belt 21 corresponds to the output end of the crushing mechanism 1, and the output end of the second conveyor belt 22 corresponds to the input end of the collection mechanism 4. The second conveyor belt 22 is an inclined feeding belt for lifting the material.

[0039] Reference Figure 1 and Figure 2 The screening mechanism 3 is disposed between the first conveyor belt 21 and the second conveyor belt 22, and includes a first screening component 31 for screening metal impurities and a second screening component 32 for screening fiber thickness. The first screening component 31 includes a first screening frame 311, a permanent magnet roller 312 rotatably mounted on the first screening frame 311, and a blow-off component 313 disposed on the first screening frame 311.

[0040] A screening trough 314 is fixedly installed inside the first screening frame 311, and a permanent magnet drum 312 is rotatably installed inside the screening trough 314. The length of the screening trough 314 is the same as the axial length of the permanent magnet drum 312. The top of the screening trough 314 has a first feed inlet 3141 for material input, and the first feed inlet 3141 is a rectangular opening parallel to the axis of the permanent magnet drum 312. A guide plate 315 is also installed at the first feed inlet 3141 of the screening trough 314, and the guide plate 315 guides the material to the outer surface of the permanent magnet drum 312.

[0041] Reference Figure 2 and Figure 3 The bottom of the screening tank 314 has a first discharge port 3142 for material output. The first discharge port 3142 is located on the side of the central axis of the permanent magnet drum 312 away from the first feed port 3141, so that an arc-shaped conveying channel 3143 is formed between the first feed port 3141 and the first discharge port 3142. The permanent magnet drum 312 is a common material separation device in the prior art. Its internal magnetic field distribution is uneven. When the permanent magnet drum 312 rotates to the arc-shaped conveying channel 3143, the magnetic field strength of the permanent magnet drum 312 is at its strongest.

[0042] The first screening frame 311 has a baffle 316 installed outside the screening tank 314. The baffle 316 includes a baffle fan 3161 and a baffle duct 3162 connected to the baffle fan 3161. The output end of the baffle duct 3162 passes through the screening tank 314 to the arc-shaped conveying channel 3143. The airflow direction of the baffle duct 3162 is from bottom to top, which can blow away the materials that are stuck together and improve the screening efficiency of metal impurities.

[0043] A limiting channel 3144 is formed between the first discharge port 3142 and the blow-off component 313. The width of the limiting channel 3144 is smaller than the width of the arc-shaped conveying channel 3143, so as to block the material carried by the permanent magnet roller 312 and reduce material waste. When the permanent magnet roller 312 rotates to the limiting channel 3144, the magnetic strength of the permanent magnet roller 312 is at its weakest state.

[0044] The first screening frame 311 also has an inclined guide plate 3145 for outputting metal impurities. The inclined guide plate 3145 is located on the side of the permanent magnet drum 312 away from the first feed inlet 3141. A blow-off component 313 is disposed on the top of the inclined guide plate 3145 and is used to blow off the metal impurities adsorbed on the permanent magnet drum 312. In this embodiment, the blow-off component 313 includes a centrifugal fan 3131 and an air supply pipe 3132 connected to the centrifugal fan 3131. The air supply pipe 3132 is a cylindrical tube. The length direction of the air supply pipe 3132 is parallel to the axis of the permanent magnet drum 312, and it has multiple blow-off holes along its length direction. The axis of the blow-off holes is tangent to the outer wall of the permanent magnet drum 312.

[0045] The first screening frame 311 is equipped with a scraper 317 on top of the screening trough 314. The scraper 317 is arranged along the axis of the permanent magnet drum 312 and is located on the side of the central axis of the permanent magnet drum 312 near the first feed inlet 3141. The scraper 317 has a scraping arc surface 3171 on the side facing the blow-off component 313. The distance between the end of the scraping arc surface 3171 and the outer wall of the permanent magnet drum 312 is 2-5mm, which can scrape off the metal impurities that have not been blown off.

[0046] The scraper 317 is also equipped with multiple magnetic suction plates 3172 on the scraping arc surface 3171. The metal impurities that are not blown off continue to rotate with the permanent magnet roller 312. When the scraper 317 comes into contact with the metal impurities, the metal impurities move along the scraping arc surface 3171 and are fixed by the magnetic suction plates 3172.

[0047] Reference Figure 2 and Figure 4 The second screening assembly 32 includes a second screening frame 321, two sets of screens spaced apart along the height direction, a vibration drive 324 for driving the second screening frame 321 to vibrate, and a crushing roller assembly 325 for further crushing. The vibration drive 324 is a vibrator in the prior art. The bottom of the second screening frame 321 is also equipped with a fixed bracket 327 and a shock-absorbing spring connecting the fixed bracket and the second screening frame 321.

[0048] The top opening of the second screening frame 321 corresponds to the first discharge port 3142, and the material after metal impurity screening is directly poured into the second screening frame 321. The screens from top to bottom include a first screen 322 and a second screen 323. Both the first screen 322 and the second screen 323 are arranged at an angle, and the aperture of the first screen 322 is larger than that of the second screen 323.

[0049] The side wall of the second screening frame 321 is provided with a second discharge port 3211 and a third discharge port 3212 in sequence along the height direction. The second discharge port 3211 corresponds to the inclined bottom end of the first screen 322, and the third discharge port 3212 corresponds to the inclined bottom end of the second screen 323.

[0050] The second screening assembly 32 has a material conveying plate 326 arranged between the third discharge port 3212 and the inclined feeding belt, with the material conveying plate 326 inclined downwards. A crushing roller assembly 325 is installed above the material conveying plate 326, and the bottom of the crushing roller assembly 325 has a through hole for material to fall through. A conveying plate is also provided between the second discharge port 3211 and the top opening of the crushing roller assembly 325. The crushing roller assembly 325 includes a crushing chamber 3251, a pair of crushing rollers 3252 rotatably mounted on the crushing chamber 3251, and a crushing drive component 3253 for driving the crushing rollers 3252 to rotate.

[0051] The implementation principle of the fiber waste screening device in this application embodiment is as follows: First, the clothing waste is initially crushed by the crushing mechanism 1. The crushed material enters the first screening component 31 through the first conveyor belt 21. The first screening component 31 screens the metal impurities in the material. Then, it enters the second screening component 32 to screen the material of different thicknesses. At the same time, the thicker material is crushed again. Finally, it is transported to the collection mechanism 4 through the second conveyor belt 22.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fibre waste screening device characterised in that, The application relates to a material screening device, which comprises a crushing mechanism (1), a conveying mechanism (2), a screening mechanism (3) and a collecting mechanism (4), wherein the conveying mechanism (2) comprises a first conveying belt (21) corresponding to the output port of the crushing mechanism (1) and a second conveying belt (22) corresponding to the input port of the collecting mechanism (4), the screening mechanism (3) is arranged between the first conveying belt (21) and the second conveying belt (22), the screening mechanism (3) comprises a first screening assembly (31) for screening metal impurities and a second screening assembly (32) for screening fiber thickness, and the first screening assembly (31) and the second screening assembly (32) are arranged at intervals along the conveying direction of the material.

2. A fibre waste screening device according to claim 1, characterised in that The first screening assembly (31) comprises a first screening frame (311), a permanent magnet roller (312) rotatably arranged on the first screening frame (311) and a blow-off piece (313) arranged on the first screening frame (311).

3. A fibre waste screening apparatus according to claim 2, wherein, The first screening frame (311) is provided with a screening groove body (314), the top of the screening groove body (314) is provided with a first feeding port (3141) for feeding the material, and the blow-off piece (313) is arranged on the screening groove body (314) and located on the side of the permanent magnet roller (312) away from the first feeding port (3141).

4. A fibre waste screening apparatus according to claim 3, wherein, The bottom of the screening groove body (314) is provided with a first discharging port (3142), and the screening groove body (314) forms a limiting channel (3144) between the first discharging port (3142) and the blow-off piece (313).

5. A fibre waste screening apparatus according to claim 2, wherein, The blow-off piece (313) comprises a centrifugal fan (3131) and a gas conveying pipe (3132) connected to the output end of the centrifugal fan (3131), and the axis of the gas conveying pipe (3132) faces the surface of the permanent magnet roller (312).

6. A fibre waste screening apparatus according to claim 3, wherein, The first screening frame (311) is further provided with a material scraping plate (317) for scraping off excess metal impurities on the top of the screening groove body (314).

7. A fibre waste screening apparatus according to claim 6, wherein, The material scraping plate (317) is provided with a material scraping arc surface (3171) on the side facing the blow-off piece (313), and the material scraping plate (317) is provided with a plurality of magnetic suction pieces (3172) on the material scraping arc surface (3171).

8. A fibre waste screening apparatus according to claim 1, wherein, The second screening assembly (32) comprises a second screening frame (321), two groups of screening meshes arranged at intervals in the height direction on the second screening frame (321), a vibration driving piece (324) for driving the second screening frame (321) to vibrate and a crushing roller group (325) arranged on the outer side of the second screening frame (321), the screening meshes comprise a first screening mesh (322) and a second screening mesh (323) arranged in sequence from top to bottom, and the hole diameters of the first screening mesh (322) and the second screening mesh (323) gradually decrease from top to bottom.

9. A fibre waste screening apparatus according to claim 8, wherein, The side wall of the second screening frame (321) is provided with a second discharge port (3211) corresponding to the first screen (322) and a third discharge port (3212) corresponding to the second screen (323), and the bottom of the second screening frame (321) is provided with a fourth discharge port, and the crushing roller group (325) and the second discharge port (3211) are correspondingly arranged.

10. A fibre waste screening apparatus according to claim 8, wherein, The crushing roller group (325) comprises a crushing box (3251), a crushing roller (3252) rotatably arranged in the crushing box (3251), and a crushing driving member (3253) for driving the crushing roller (3252) to rotate, and the second screening assembly (32) is provided with a material conveying plate (326) corresponding to the output end of the crushing box (3251).

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