Waste silk recovery device in polyester staple fiber production process

Abstract

The invention provides a waste silk recovery device in polyester staple fiber production process, the waste silk recovery device comprises a recovery box and a heating tank, the upper end of the recovery box is provided with a feed hopper, the bottom of the inner cavity of the recovery box is conical, the bottom of the recovery box is provided with a discharge port, the discharge port is connected with a conveying pipe, and the heating tank is connected with the discharge port. One end of the conveying pipe is communicated with the upper end of the heating tank, the other end of the conveying pipe is communicated with the upper end of the heating tank, a centrifugal fan is installed on the conveying pipe, an anti-blocking assembly is arranged at the bottom of an inner cavity of the recycling box and comprises a dispersing disc and a first rotating shaft, and the dispersing disc is of a conical design. The polyester staple fiber waste silk recovery device realizes efficient crushing through two-stage crushing and vibration screening, ensures continuous discharging by utilizing cooperative anti-blocking of a dispersion disc and an insertion rod, is matched with a stirring assembly to improve melting uniformity, has the advantages of high automation degree, energy conservation, environmental protection and the like, can remarkably improve waste silk recovery rate and reclaimed material quality, reduces production cost, and is suitable for popularization and application. The method is suitable for large-scale cyclic utilization of chemical fiber industry waste.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste silk recycling, and more specifically, particularly relates to a waste silk recycling device in the production process of polyester staple fiber. Background Art

[0002] Polyester staple fiber is a fiber obtained by re-spinning polyester into a filament bundle and then cutting it. Generally, polyester staple fiber can be produced through two main processes: pre-spinning and post-spinning. According to different requirements, polyester staple fiber of different specifications can be cut in post-spinning. Waste silk will be generated during the production and processing of polyester staple fiber, and at the same time, waste silk has good recycling value, and it is necessary to recycle the waste silk.

[0003] Currently, in the actual use process of the existing waste silk recycling device in the production process of polyester staple fiber, there are still some deficiencies: 1. When recycling waste silk during the production process of polyester staple fiber, generally, the waste silk will be heated to a molten state and then collected for subsequent processing. Before melting the waste silk, generally, the waste silk needs to be crushed. The existing waste silk recycling device in the production process of polyester staple fiber has a poor crushing effect on polyester waste silk, and the screen lacks a dynamic collaborative crushing function, resulting in uneven particle size distribution of the waste silk and affecting the melting efficiency; 2. Polyester waste silk is prone to agglomerate at the discharge port under the action of gravity, which is likely to cause blockage and affect continuous production; 3. The existing recycling devices directly put the waste silk into the heating tank for static heating, lacking components for stirring it, which easily makes the contact area between the waste silk and the heat in the heating tank small, the melting rate slow, and affects the recycling efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a waste silk recycling device in the production process of polyester staple fiber, which is achieved by the following specific technical means: A waste silk recycling device in the production process of polyester staple fiber, comprising a recycling box and a heating tank. A feed hopper is arranged at the upper end of the recycling box. The bottom of the inner cavity of the recycling box is designed in a conical shape. A discharge port is opened at the bottom of the recycling box, and a conveying pipe is connected to the discharge port. The other end of the conveying pipe is communicated with the upper end of the heating tank. A centrifugal fan is installed on the conveying pipe. A anti-blocking component is arranged at the bottom of the inner cavity of the recycling box. The anti-blocking component includes a dispersion plate and a first rotating shaft. The dispersion plate is designed in a conical shape with the tip facing upward. The dispersion plate is located directly above the discharge port. The first rotating shaft is rotatably installed in the recycling box. An eccentric wheel is fixedly installed on the first rotating shaft. A plug rod is arranged below the eccentric wheel. The plug rod is located directly above the discharge port. A connecting rod is fixedly installed at the upper end of the plug rod. The bottom surface of the eccentric wheel is attached to the upper surface of the connecting rod. A stirring component is arranged in the heating tank. The stirring component includes a second motor. The output shaft two of the second motor is fixedly connected with a stirring shaft. The stirring shaft is rotatably installed in the heating tank. A plurality of stirring blades are fixedly installed on the stirring shaft at equal intervals.

[0005] Further, the plug rod is designed in a conical shape with the tip facing downward. Both ends of the connecting rod are fixedly connected with sliding rods. Cylinders are fixedly installed on both sides of the bottom end of the dispersion plate. A receiving groove is arranged in each cylinder. The upper end of each sliding rod is slidably installed in the receiving groove.

[0006] Further, a round block is fixedly connected to the top end of each sliding rod. A second spring is movably sleeved on the upper part of each sliding rod. Each round block is fixedly connected to the bottom inner wall of the receiving groove through the second spring. A fixing rod is fixedly connected to the bottom end of the dispersion plate. The dispersion plate is fixed to the inner wall of the recycling box through the fixing rod.

[0007] Further, two crushing rollers are rotatably installed on the upper side of the inner cavity of the recycling box. A first gear is fixedly connected to the shaft end of each crushing roller. The two first gears are meshed with each other. A first motor for driving the crushing rollers to rotate is fixedly installed on the outside of the recycling box.

[0008] Further, a screening net is arranged below the two crushing rollers. The screening net is slidably installed in the recycling box. The screening net is designed in an inverted U shape. Sliders are fixedly installed at both ends of the screening net. A first spring is fixedly connected to the upper end of each slider. Chute grooves are opened on both inner walls of the recycling box. The two sliders are respectively slidably installed in the chute grooves. Each slider is fixedly connected to the upper inner wall of the chute groove through the first spring.

[0009] Further, a contact ball is fixedly installed at the bottom end of the screening net. A fourth rotating shaft is rotatably installed in the recycling box. A cam is fixedly installed on the fourth rotating shaft. The convex part of the cam is attached to the bottom surface of the contact ball.

[0010] Furthermore, a third rotating shaft is rotatably installed in the recycling bin. The third rotating shaft is located within the screening mesh. A number of blades are fixedly installed at equal intervals on the third rotating shaft. The two ends of the third rotating shaft are respectively fixedly connected to a third gear and a fourth gear. One end of a fourth rotating shaft is fixedly connected to a fifth gear and a sixth gear. One end of the first rotating shaft is fixedly connected to a seventh gear. A toothed synchronous belt two is sleeved on the fourth gear and the sixth gear. A toothed synchronous belt three is sleeved on the seventh gear and the fifth gear.

[0011] Furthermore, the second motor is fixedly installed at the upper end of the heating tank. The bottom of the heating tank is fixedly connected to a feeding pipeline. A second rotating shaft is arranged on one side of the second motor.

[0012] Furthermore, the two ends of the second rotating shaft are respectively fixedly connected to a first bevel gear and a second gear. The first bevel gear meshes with the second bevel gear. The second rotating shaft is rotatably installed at the upper end of the heating tank.

[0013] Furthermore, a toothed synchronous belt one is sleeved on the second gear and the third gear. Limiting members are fixedly installed on both inner walls of the two sides of the recycling bin. The two sides of the upper end of the screening mesh are respectively slidably installed within the limiting members.

[0014] Compared with the prior art, the present invention has the following beneficial effects: First, the polyester staple fiber waste silk recycling device achieves efficient pulverization through two-stage crushing and vibrating screening, uses a dispersion disc and inserting rods to cooperate to prevent blockage and ensure continuous discharging, and coordinates with a stirring assembly to improve the melting uniformity. It has advantages such as high automation, energy conservation and environmental protection, can significantly improve the waste silk recovery rate and the quality of recycled materials, reduce production costs, and is suitable for large-scale circular utilization of waste materials in the chemical fiber industry.

[0015] Second, multi-stage pulverization: The device adopts a two-stage pulverization design. First, the waste silk is initially crushed by two mutually meshing crushing rollers to turn large pieces of waste silk into smaller particles. Subsequently, the blades on the rotating shaft are used to further refine the preliminarily crushed waste silk that falls into the screening mesh. This design can fully crush the waste silk, reduce the difficulty of subsequent heating and melting, effectively improve the waste silk recovery efficiency, enable the waste silk to be more fully recycled, and meet the requirements for efficient recovery and treatment of waste silk in polyester staple fiber production. Screening and crushing coordination: During the screening process, the screening mesh not only plays a role in screening waste silk that meets the particle size, but also closely coordinates with the secondary crushing structure. The blades within the screening mesh continuously crush the waste silk that fails to pass through the screening under the drive of the stirring shaft, further ensuring the uniform particle size of the waste silk that passes through the screening and improving the overall recovery quality.

[0016] 3. The device cleverly cooperates with the cam and the screening net. When the cam rotates, its raised part acts on the contact ball at the bottom of the screening net, causing the screening net to move up and down and generate vibration. The vibration can change the position and distribution of the waste silk on the screening net, prompting the waste silk to fully contact the screen net, speeding up the screening speed, and allowing the waste silk that meets the particle size requirements to pass through the screening net more quickly, thereby improving the efficiency of the entire recycling process.

[0017] Fourth, at the discharge port, the device drives the insertion rod to do reciprocating motion through the eccentric wheel. The conical design of the insertion rod enables it to effectively insert into the waste wire pile that may be blocked, break it up and relieve the blockage; on the other hand, the conical dispersion plate located just above the discharge port can disperse the fallen waste wire to prevent the waste wire from falling into the discharge port and causing blockage. These two anti-blocking measures cooperate with each other, greatly improving the patency of the discharge port and ensuring the stable operation of the recovery device.

[0018] 5. The various moving parts of the device are linked by a series of gears, synchronous belts and other transmission structures. For example, while the second motor drives the stirring shaft in the heating tank to rotate, it drives the rotating shaft and blade in the screening net to rotate through the transmission structure to achieve secondary crushing of the waste silk, and drives the cam and eccentric wheel to realize the vibration of the screening net and the reciprocating motion of the rod respectively. The linkage design reduces the use of additional power equipment and improves energy utilization efficiency.

[0019] 6. The stirring shaft in the heating tank drives multiple groups of stirring blades to rotate, so that the waste silk can fully contact the heat source during the melting process, shorten the heating time, and reduce energy consumption. The centrifugal fan sucks the waste silk into the heating tank under negative pressure through the conveying pipe, avoiding manual intervention, reducing the risk of blockage, and improving the level of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the entire waste yarn recovery device in the polyester staple fiber production process of the present invention.

[0021] Figure 2 Schematic diagram of the delivery pipe of the present invention.

[0022] Figure 3 It is a schematic diagram of a recycling box of the present invention cut away.

[0023] Figure 4 It is a schematic diagram of an eccentric wheel of the present invention.

[0024] Figure 5 It is a schematic diagram of a cylinder cut open according to the present invention.

[0025] Figure 6 It is a schematic diagram of the stirring shaft of the present invention.

[0026] Figure 7 It is a schematic diagram of the screening net of the present invention.

[0027] Figure 8 is a schematic diagram of the enlarged view at location A in the present invention Figure 3 in the present invention

[0028] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows 1. Recycling bin; 11. Conveying pipe; 12. Centrifugal fan; 13. Discharge port; 14. Feed hopper; 15. Limiting member; 2. Heating tank; 3. Crushing roller; 31. First gear; 32. First motor; 4. Screening mesh; 41. Slide block; 42. First spring; 43. Contact ball; 5. Dispersion plate; 51. Fixed rod; 52. Cylinder; 53. Accommodating groove; 6. First rotating shaft; 61. Eccentric wheel; 62. Connecting rod; 63. Plug rod; 64. Slide rod; 65. Round block; 66. Second spring; 67. Seventh gear; 7. Second motor; 71. Stirring shaft; 72. Stirring blade; 73. Second rotating shaft; 74. First bevel gear; 75. Second bevel gear; 76. Second gear; 77. First toothed synchronous belt; 8. Third rotating shaft; 81. Blade; 82. Third gear; 83. Fourth gear; 84. Second toothed synchronous belt; 9. Fourth rotating shaft; 91. Cam; 92. Fifth gear; 93. Sixth gear; 94. Third toothed synchronous belt Detailed implementation manners

[0029] The following further describes in detail the implementation manners of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention

[0030] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance

[0031] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances Embodiment

[0032] As shown in the appended Figure 1 to the appendedFigure 8 as shown: The present invention provides a waste silk recycling device in the production process of polyester staple fiber, which includes a recycling box 1 and a heating tank 2. A feed hopper 14 is arranged at the upper end of the recycling box 1. The bottom of the inner cavity of the recycling box 1 is designed in a conical shape. An outlet 13 is opened at the bottom of the recycling box 1. A conveying pipe 11 is connected to the outlet 13. The other end of the conveying pipe 11 is communicated with the upper end of the heating tank 2. A centrifugal fan 12 is installed on the conveying pipe 11. An anti-blocking component is arranged at the bottom of the inner cavity of the recycling box 1. The anti-blocking component includes a dispersion plate 5 and a first rotating shaft 6. The dispersion plate 5 is designed in a conical shape with the tip upward. The dispersion plate 5 is located directly above the outlet 13. The first rotating shaft 6 is rotatably installed in the recycling box 1. An eccentric wheel 61 is fixedly installed on the first rotating shaft 6. A plug rod 63 is arranged below the eccentric wheel 61. The plug rod 63 is located directly above the outlet 13. A connecting rod 62 is fixedly installed at the upper end of the plug rod 63. The bottom surface of the eccentric wheel 61 is attached to the upper surface of the connecting rod 62. A stirring component is arranged in the heating tank 2. The stirring component includes a second motor 7. The output shaft two of the second motor 7 is fixedly connected with a stirring shaft 71. The stirring shaft 71 is rotatably installed in the heating tank 2. A plurality of stirring blades 72 are fixedly installed on the stirring shaft 71 at equal intervals. The plug rod 63 is designed in a conical shape with the tip downward. Both ends of the connecting rod 62 are fixedly connected with sliding rods 64. Cylinders 52 are fixedly installed on both sides of the bottom end of the dispersion plate 5. A receiving groove 53 is arranged in each cylinder 52. The upper end of each sliding rod 64 is slidably installed in the receiving groove 53. A round block 65 is fixedly connected to the top end of each sliding rod 64. A second spring 66 is movably sleeved on the upper part of each sliding rod 64. Each round block 65 is fixedly connected to the bottom inner wall of the receiving groove 53 through the second spring 66. A fixing rod 51 is fixedly connected to the bottom end of the dispersion plate 5. The dispersion plate 5 is fixed to the inner wall of the recycling box 1 through the fixing rod 51. Two crushing rollers 3 are rotatably installed on the upper side of the inner cavity of the recycling box 1. A first gear 31 is fixedly connected to the shaft end of each crushing roller 3. The two first gears 31 are meshed with each other. A first motor 32 for driving the crushing rollers 3 to rotate is fixedly installed on the outside of the recycling box 1. A screening net 4 is arranged below the two crushing rollers 3. The screening net 4 is slidably installed in the recycling box 1. The screening net 4 is designed in an inverted U shape. Sliders 41 are fixedly installed at both ends of the screening net 4. A first spring 42 is fixedly connected to the upper end of each slider 41. Chute grooves are opened on both inner walls of the recycling box 1. The two sliders 41 are respectively slidably installed in the chute grooves. Each slider 41 is fixedly connected to the upper side inner wall of the chute groove through the first spring 42. A contact ball 43 is fixedly installed at the bottom end of the screening net 4. A fourth rotating shaft 9 is rotatably installed in the recycling box 1. A cam 91 is fixedly installed on the fourth rotating shaft 9. The convex part of the cam 91 is attached to the bottom surface of the contact ball 43. A third rotating shaft 8 is rotatably installed in the recycling box 1. The third rotating shaft 8 is located in the screening net 4. A plurality of blades 81 are fixedly installed on the third rotating shaft 8 at equal intervals. A third gear 82 and a fourth gear 83 are respectively fixedly connected to both ends of the third rotating shaft 8. A fifth gear 92 and a sixth gear 93 are fixedly connected to one end of the fourth rotating shaft 9.One end of the rotating shaft 1 6 is fixedly connected with a gear 7 67, and gear 4 83 and gear 6 93 are sleeved with a toothed synchronous belt 2 84, and gear 7 67 and gear 5 92 are sleeved with a toothed synchronous belt 3 94. Motor 2 7 is fixedly installed on the upper end of the heating tank 2, and a feeding pipe is fixedly connected to the bottom of the heating tank 2. A rotating shaft 2 73 is provided on one side of the motor 2 7, and both ends of the rotating shaft 2 73 are respectively fixedly connected with a bevel gear 1 74 and a gear 2 76, and the bevel gear 1 74 is meshed with the bevel gear 2 75. The rotating shaft 2 73 is rotatably installed on the upper end of the heating tank 2, and gear 2 76 and gear 3 82 are sleeved with a toothed synchronous belt 1 77. The inner walls of both sides of the recovery box 1 are fixedly installed with limit members 15, and both sides of the upper end of the screening net 4 are respectively slidably installed in the limit members 15; When the waste silk recovery device in the polyester staple fiber production process is used, the waste silk generated in the production process is firstly put into the feed hopper 14, and then the motor 32 is started. The power output of the motor 32 drives the two crushing rollers 3 to rotate relative to each other. During the relative rotation of the two crushing rollers 3, the tooth patterns on the surfaces of the two crushing rollers 3 interact with each other, exerting extrusion force and friction force on the input waste silk, thereby performing a primary crushing treatment on the waste silk, and crushing larger pieces of waste silk into relatively small particles. The primary crushing treatment effectively reduces the size of the waste silk, laying a foundation for subsequent further processing and recycling. After the initial crushing, the waste silk naturally falls into the screening net 4 below under the action of gravity. At this time, the stirring shaft 71 rotates under the drive of the motor 2 7, and through a series of transmission structures, that is, the stirring shaft 71 drives the bevel gear 2 75 to rotate, and then drives the bevel gear 1 74 meshing therewith to rotate, so that the rotating shaft 2 73 and the gear 2 76 rotate, and finally drives the rotating shaft 3 8 to rotate, and a plurality of blades 81 equidistantly fixedly installed on the rotating shaft 3 8 rotate accordingly, and the preliminary crushed waste silk falling into the screening net 4 is further crushed. After these two crushing processes, the waste silk is crushed into smaller pieces, which is conducive to more efficient melting in the heating tank 2 later. At the same time, the screening net 4 plays a screening role. Its unique inverted U-shaped design and the connection method with the inner wall of the recycling box 1 enable the waste silk that meets the preset size to pass through the mesh of the screening net 4 and fall to the bottom side of the inner cavity of the recycling box 1; while the waste silk that does not meet the size remains in the screening net 4 and continues to be crushed by the blade 81; While the rotation of the third rotating shaft 8 drives the blade 81 to perform secondary crushing on the waste filaments, the rotation of the third rotating shaft 8 also drives the fourth gear 83 to rotate. The fourth gear 83 is connected to the sixth gear 93 through the toothed synchronous belt two 84, thereby driving the sixth gear 93, the fifth gear 92 and the fourth rotating shaft 9 to rotate. The cam 91 fixedly installed on the fourth rotating shaft 9 rotates as the fourth rotating shaft 9 rotates. When the convex part of the cam 91 contacts the bottom surface of the contact ball 43 fixedly installed at the bottom end of the screening mesh 4, the cam 91 exerts an upward acting force on the contact ball 43, and this force is transmitted to the screening mesh 4 through the contact ball 43, causing the screening mesh 4 to move upward. The upward movement of the screening mesh 4 drives the sliders 41 fixedly installed at both ends of it to slide upward in the sliding grooves opened on the inner walls of both sides of the recycling box 1. The upward movement of the sliders 41 will exert a force on the first spring 42 connected to the upper end of them, causing the first spring 42 to be compressed under force. When the convex part of the cam 91 separates from the contact ball 43, the first spring 42, relying on its own elastic reset function, causes the screening mesh 4 to reset downward. As the cam 91 continues to rotate, this periodic contact and separation causes the screening mesh 4 to move up and down reciprocally and generate vibration. This vibration effectively changes the position and distribution state of the waste filaments in the screening mesh 4, making the contact between the waste filaments and the screen more sufficient, thereby accelerating the screening efficiency of the waste filaments, ensuring that more waste filaments of suitable size can pass through the screening mesh 4 in time and enter the bottom side of the inner cavity of the recycling box 1; While the fourth rotating shaft 9 rotates, it drives the seventh gear 67 to rotate through the toothed synchronous belt three 94, thereby causing the first rotating shaft 6 to rotate. The eccentric wheel 61 fixedly installed on the first rotating shaft 6 rotates as the first rotating shaft 6 rotates. During the rotation of the eccentric wheel 61, it continuously and intermittently exerts a downward acting force on the connecting rod 62. Both ends of the connecting rod 62 are fixedly connected with sliding rods 64. The inserting rod 63 is connected to the eccentric wheel 61 through the connecting rod 62. Therefore, when the connecting rod 62 moves downward under the action of the eccentric wheel 61, it will drive the inserting rod 63 to move downward together. At the same time, the downward movement of the connecting rod 62 will drive the sliding rods 64 to slide downward in the accommodating grooves 53 in the cylinders 52 fixedly installed on both sides of the bottom end of the dispersing plate 5. The round blocks 65 fixedly connected to the top ends of the sliding rods 64 also move downward accordingly. The downward movement of the round blocks 65 will exert a force on the second spring 66 sleeved on the upper part of the sliding rods 64, causing the second spring 66 to be compressed under force. As the eccentric wheel 61 continues to rotate, with the cooperation of the reset function of the second spring 66, the inserting rod 63 will move downward reciprocally. Since the inserting rod 63 is located directly above the discharge port 13 and is designed in a conical shape with the tip facing downward, the reciprocating downward movement of the inserting rod 63 can effectively insert into the waste filament pile that may be blocked at the discharge port 13, break up and push aside the blocked waste filaments, thereby alleviating the blockage situation of the discharge port 13. In addition, the dispersing plate 5 fixedly installed in the recycling box 1, which is located directly above the discharge port 13 and is designed in a conical shape with the tip facing upward, plays a role in dispersing the waste filaments falling from the screening mesh 4, preventing the waste filaments from directly concentrating and falling into the discharge port 13, further reducing the possibility of blockage of the discharge port 13; After screening, the waste silk that meets the requirements is accumulated on the bottom side of the inner cavity of the recycling box 1. At this time, the centrifugal fan 12 is started. The centrifugal fan 12 generates negative pressure in the conveying pipe 11, so that the waste silk located at the discharge port 13 at the bottom of the recycling box 1 is sucked into the conveying pipe 11 under the action of the pressure difference, and is conveyed to the heating tank 2 along the conveying pipe 11. In the heating tank 2, the motor 2 7 drives the stirring shaft 71 to drive a plurality of stirring blades 72 to rotate. During the rotation process, the stirring blades 72 stir the waste silk in the heating tank 2 over a large range, so that the waste silk continuously rolls and moves in the heating tank 2, thereby greatly increasing the contact area between the waste silk and the heat in the heating tank 2, accelerating the heating speed of the waste silk, and then improving the melting efficiency of the waste silk, thereby realizing efficient recycling and processing of waste silk in polyester staple fiber production.

[0033] The working principle of this embodiment: Step 1: When using the waste silk recovery device in the polyester staple fiber production process, firstly, the waste silk generated in the production process is put into the feed hopper 14, and then the motor 32 is started. The power output of the motor 32 drives the two crushing rollers 3 to rotate relative to each other. During the relative rotation of the two crushing rollers 3, the tooth patterns on the surfaces of the two crushing rollers 3 interact with each other, exerting extrusion force and friction force on the input waste silk, thereby performing a primary crushing treatment on the waste silk, and crushing larger pieces of waste silk into relatively small particles. The primary crushing treatment effectively reduces the size of the waste silk, laying a foundation for subsequent further treatment and recycling; Step 2: After the initial crushing, the waste silk naturally falls into the screening net 4 below under the action of gravity. At this time, the stirring shaft 71 rotates under the drive of the motor 2 7, and through a series of transmission structures, that is, the stirring shaft 71 drives the bevel gear 2 75 to rotate, and then drives the bevel gear 1 74 meshing therewith to rotate, so that the rotating shaft 2 73 and the gear 2 76 rotate, and finally drives the rotating shaft 3 8 to rotate, and a number of blades 81 equidistantly fixedly installed on the rotating shaft 3 8 rotate accordingly, and the preliminary crushed waste silk falling into the screening net 4 is further crushed. After these two crushing processes, the waste silk is crushed into smaller pieces, which is conducive to more efficient melting in the heating tank 2 later. At the same time, the screening net 4 plays a screening role. Its unique inverted U-shaped design and the connection method with the inner wall of the recycling box 1 enable the waste silk that meets the preset size to pass through the mesh of the screening net 4 and fall to the bottom side of the inner cavity of the recycling box 1; while the waste silk that does not meet the size remains in the screening net 4 and continues to be crushed by the blade 81; Step 3: While the third rotating shaft 8 rotates to drive the blade 81 to perform secondary crushing on the waste filaments, the rotation of the third rotating shaft 8 will also drive the fourth gear 83 to rotate. The fourth gear 83 is connected to the sixth gear 93 through the toothed synchronous belt two 84, thereby driving the sixth gear 93, the fifth gear 92 and the fourth rotating shaft 9 to rotate. The cam 91 fixedly installed on the fourth rotating shaft 9 rotates with the fourth rotating shaft 9. When the convex part of the cam 91 contacts the bottom surface of the contact ball 43 fixedly installed at the bottom end of the screening mesh 4, the cam 91 exerts an upward force on the contact ball 43, and this force is transmitted to the screening mesh 4 through the contact ball 43, causing the screening mesh 4 to move upward. The upward movement of the screening mesh 4 drives the sliders 41 fixedly installed at both ends of it to slide upward in the chutes opened on the inner walls of both sides of the recycling box 1. The upward movement of the sliders 41 will exert a force on the first spring 42 connected to the upper end of them, causing the first spring 42 to be compressed under force. When the convex part of the cam 91 separates from the contact ball 43, the first spring 42, relying on its own elastic reset function, causes the screening mesh 4 to reset downward. As the cam 91 continues to rotate, this periodic contact and separation causes the screening mesh 4 to move up and down reciprocally and generate vibration. This vibration effectively changes the position and distribution state of the waste filaments in the screening mesh 4, making the contact between the waste filaments and the screen more sufficient, thereby accelerating the screening efficiency of the waste filaments and ensuring that more waste filaments of the appropriate size can pass through the screening mesh 4 in a timely manner and enter the bottom side of the inner cavity of the recycling box 1; Step 4: While the fourth rotating shaft 9 rotates, it drives the seventh gear 67 to rotate through the toothed synchronous belt three 94, thereby causing the first rotating shaft 6 to rotate. The eccentric wheel 61 fixedly installed on the first rotating shaft 6 rotates with the first rotating shaft 6. During the rotation of the eccentric wheel 61, it will continuously and intermittently exert a downward force on the connecting rod 62. Both ends of the connecting rod 62 are fixedly connected with sliding rods 64. The inserting rod 63 is connected to the eccentric wheel 61 through the connecting rod 62. Therefore, when the connecting rod 62 moves downward under the action of the eccentric wheel 61, it will drive the inserting rod 63 to move downward together. At the same time, the downward movement of the connecting rod 62 will drive the sliding rods 64 to slide downward in the receiving grooves 53 in the cylinders 52 fixedly installed at both sides of the bottom end of the dispersing plate 5. The round blocks 65 fixedly connected to the top ends of the sliding rods 64 also move downward accordingly. The downward movement of the round blocks 65 will exert a force on the second spring 66 sleeved on the upper part of the sliding rods 64, causing the second spring 66 to be compressed under force. As the eccentric wheel 61 continues to rotate, with the cooperation of the reset function of the second spring 66, the inserting rod 63 will move downward reciprocally. Since the inserting rod 63 is located directly above the discharge port 13 and is designed in a conical shape with the tip facing downward, the reciprocating downward movement of the inserting rod 63 can effectively insert into the waste filament pile that may be blocked at the discharge port 13, break up and push aside the blocked waste filaments, thereby alleviating the blockage situation of the discharge port 13. In addition, the dispersing plate 5 fixedly installed in the recycling box 1, which is located directly above the discharge port 13 and is designed in a conical shape with the tip facing upward, plays a role in dispersing the waste filaments falling from the screening mesh 4, preventing the waste filaments from directly concentrating and falling into the discharge port 13, further reducing the possibility of blockage of the discharge port 13; The fifth step: The waste filaments that meet the requirements after screening accumulate at the bottom side of the inner cavity of the recycling box 1. At this time, start the centrifugal fan 12. The centrifugal fan 12 generates negative pressure in the conveying pipe 11, so that the waste filaments located at the discharge port 13 at the bottom of the recycling box 1 are sucked into the conveying pipe 11 under the action of the pressure difference and are conveyed along the conveying pipe 11 to the heating tank 2. In the heating tank 2, the second motor 7 drives the stirring shaft 71 to drive a plurality of stirring blades 72 to rotate. During the rotation of the stirring blades 72, the waste filaments in the heating tank 2 are stirred extensively, so that the waste filaments continuously roll and move in the heating tank 2. Thus, the contact area between the waste filaments and the heat in the heating tank 2 is greatly increased, the heating speed of the waste filaments is accelerated, and the melting efficiency of the waste filaments is improved, realizing the efficient recycling treatment of the waste filaments produced in the production of polyester staple fiber.

[0034] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A waste yarn recovery device in a polyester staple fiber production process, comprising a recovery box (1) and a heating tank (2), characterized in that: A feed hopper (14) is provided at the upper end of the recovery box (1); the bottom of the inner cavity of the recovery box (1) is of conical design; a discharge port (13) is provided at the bottom of the recovery box (1); a delivery pipe (11) is connected to the discharge port (13); the other end of the delivery pipe (11) is in communication with the upper end of the heating tank (2); and a centrifugal fan (12) is installed on the delivery pipe (11); The bottom of the inner cavity of the recovery box (1) is provided with an anti-blocking component, the anti-blocking component comprising a dispersion disc (5) and a rotating shaft (6), the dispersion disc (5) is of conical design and its tip is arranged upwards, the dispersion disc (5) is located directly above the discharge port (13), the rotating shaft (6) is rotatably mounted in the recovery box (1), an eccentric wheel (61) is fixedly mounted on the rotating shaft (6), a plug rod (63) is arranged below the eccentric wheel (61), the plug rod (63) is located directly above the discharge port (13), a connecting rod (62) is fixedly mounted on the upper end of the plug rod (63), and the bottom surface of the eccentric wheel (61) is in contact with the upper surface of the connecting rod (62); The heating tank (2) is provided with a stirring assembly, the stirring assembly comprising a second motor (7), the output shaft of the second motor (7) being fixedly connected to a stirring shaft (71), the stirring shaft (71) being rotatably mounted in the heating tank (2), and a plurality of stirring blades (72) being fixedly mounted at equal intervals on the stirring shaft (71).

2. A waste yarn recovery device in the polyester staple fiber production process as claimed in claim 1, characterized in that: The insertion rod (63) is of conical design with the tip facing downwards, and both ends of the connecting rod (62) are fixedly connected to sliding rods (64); Wherein, cylinders (52) are fixedly mounted on both sides of the bottom end of the dispersion plate (5), each cylinder (52) is provided with a receiving groove (53), and the upper end of each sliding rod (64) is slidably mounted in the receiving groove (53).

3. A waste yarn recovery device in the polyester staple fiber production process as claimed in claim 2, characterized in that: The top end of each slide bar (64) is fixedly connected to a round block (65), the upper part of each slide bar (64) is movably sleeved with a second spring (66), and each round block (65) is fixedly connected to the bottom inner wall of the receiving groove (53) via the second spring (66); The bottom end of the dispersion plate (5) is fixedly connected to a fixing rod (51), and the dispersion plate (5) is fixed to the inner wall of the recovery box (1) via the fixing rod (51).

4. A waste yarn recovery device in the polyester staple fiber production process as claimed in claim 3, characterized in that: Two crushing rollers (3) are rotatably mounted on the upper side of the inner cavity of the recycling box (1), and a gear 1 (31) is fixedly connected to the shaft end of each crushing roller (3). The two gears 1 (31) are meshed with each other, and a motor 1 (32) for driving the crushing rollers (3) to rotate is fixedly mounted on the outer side of the recycling box (1).

5. A waste yarn recovery device in the polyester staple fiber production process as claimed in claim 4, characterized in that: A screening net (4) is arranged below the two crushing rollers (3), and the screening net (4) is slidably mounted in the recovery box (1). The screening net (4) is of an inverted U-shaped design, and sliders (41) are fixedly mounted at both ends of the screening net (4), and the upper end of each slider (41) is fixedly connected to a spring 1 (42); Wherein, both inner walls of the recycling box (1) are provided with slide grooves, and the two sliders (41) are respectively slidably installed in the slide grooves, and each slider (41) is fixedly connected to the upper inner wall of the slide groove via a spring 1 (42).

6. A waste yarn recovery device in the polyester staple fiber production process as claimed in claim 5, characterized in that: A contact ball (43) is fixedly mounted on the bottom end of the screening net (4); A rotating shaft (9) is rotatably mounted in the recovery box (1), a cam (91) is fixedly mounted on the rotating shaft (9), and a raised portion of the cam (91) is in contact with the bottom surface of the contact ball (43).

7. A waste fiber recovery device in the polyester staple fiber production process as claimed in claim 6, characterized in that: A rotating shaft 3 (8) is rotatably mounted in the recovery box (1), the rotating shaft 3 (8) is located in the screening net (4), a plurality of blades (81) are equidistantly fixedly mounted on the rotating shaft 3 (8), two ends of the rotating shaft 3 (8) are respectively fixedly connected to a gear 3 (82) and a gear 4 (83), one end of the rotating shaft 4 (9) is fixedly connected to a gear 5 (92) and a gear 6 (93), and one end of the rotating shaft 1 (6) is fixedly connected to a gear 7 (67); Wherein, the gear four (83) and the gear six (93) are provided with a toothed synchronous belt two (84), and the gear seven (67) and the gear five (92) are provided with a toothed synchronous belt three (94).

8. A waste yarn recovery device in the polyester staple fiber production process as claimed in claim 7, characterized in that: The second motor (7) is fixedly mounted on the upper end of the heating tank (2); a material discharge pipe is fixedly connected to the bottom of the heating tank (2); and a second rotating shaft (73) is provided on one side of the second motor (7).

9. A waste yarn recovery device in the polyester staple fiber production process as claimed in claim 8, characterized in that: The two ends of the second rotating shaft (73) are respectively fixedly connected to a bevel gear (74) and a second gear (76), the bevel gear (74) is meshed with the bevel gear (75), and the second rotating shaft (73) is rotatably mounted on the upper end of the heating tank (2).

10. A waste yarn recovery device in the polyester staple fiber production process as claimed in claim 9, characterized in that: The gear 2 (76) and the gear 3 (82) are sleeved with a toothed synchronous belt 1 (77). The inner walls on both sides of the recovery box (1) are fixedly mounted with limit members (15), and the two sides of the upper end of the screening net (4) are slidably mounted in the limit members (15).

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