Glass fiber reinforced plastic product production and recovery equipment and method thereof

Abstract

The invention discloses glass fiber reinforced plastic product production and recovery equipment and a method thereof, and relates to the technical field of glass fiber reinforced plastic recovery, the glass fiber reinforced plastic product production and recovery equipment comprises a bottom plate, a fragmentation box is arranged above the bottom plate, a box cover is fixed to one side of the fragmentation box, a fragmentation mechanism is arranged in the fragmentation box, and a glass fiber reinforced plastic product is arranged in the fragmentation box. A top plate is fixed to the top of the fragmentation box, a drying mechanism connected with the fragmentation mechanism is arranged at the upper end of the top plate, a pyrolytic reaction furnace located on one side of the lower portion of the fragmentation box is arranged at the upper end of the bottom plate, and a gaseous substance outlet pipe is arranged at the upper portion of the side wall of the pyrolytic reaction furnace; a heat recovery mechanism connected with the drying mechanism is arranged on the gaseous substance outlet pipe, and a discharge pipe is arranged at the lower part of the side wall of the pyrolytic reaction furnace. The glass fiber reinforced plastic recycling device meets the efficient, energy-saving and automatic recycling requirements, aims at improving the recycling efficiency, reducing energy consumption and achieving automatic production, and provides a more efficient and environment-friendly solution for recycling of glass fiber reinforced plastic products.

Description

Technical Field

[0001] The present invention relates to the technical field of glass fiber reinforced plastic recycling, and in particular to a glass fiber reinforced plastic product production and recycling device and a method thereof. Background Art

[0002] Glass fiber reinforced plastic (GFRP), a composite material with excellent performance, has been widely used in a wide range of fields, including aerospace, automotive manufacturing, and construction materials. As its application continues to grow, the amount of waste generated by GFRP products at the end of their useful life is also increasing. If not properly handled, this waste not only wastes resources but also causes serious environmental pollution. Therefore, efficient recycling of GFRP products is of great practical significance.

[0003] In the existing recycling process for glass fiber reinforced plastic products, drying and screening are two key steps. During the drying process, traditional drying equipment typically uses a single heating method, such as electric heating or direct hot air blowing. However, these methods have many shortcomings. Electric heating methods consume a lot of energy, increasing recycling costs; while direct hot air blowing methods make it difficult to achieve uniform and efficient drying of fibrous materials, especially recycled glass fiber reinforced plastic products. The material is prone to clumping during the drying process, making it difficult to completely remove moisture, affecting the efficiency of subsequent processing and product quality.

[0004] During the screening process, fiber fragments from recycled glass fiber reinforced plastics (GFRPs) easily clog the screen mesh. Conventional screening equipment suffers from low screening efficiency when handling this type of material, requiring frequent downtime for screen cleaning. This not only reduces production efficiency but also increases labor costs. Furthermore, conventional equipment lacks an effective automatic recycling mechanism for unscreened coarse material, often requiring manual removal and re-injection into the crushing equipment. This is a cumbersome operation and has a low degree of automation. Therefore, there is a need to design a production and recycling equipment for GFRP products and a method thereof. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a glass fiber reinforced plastic product production and recycling equipment and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A glass fiber reinforced plastic product production and recycling device includes a base plate, a crushing box is provided above the base plate, a box cover is fixed to one side of the crushing box, a crushing mechanism is provided inside the crushing box, a top plate is fixed to the top of the crushing box, a drying mechanism connected to the crushing mechanism is provided at the upper end of the top plate, a pyrolysis reactor located on the side below the crushing box is provided at the upper end of the base plate, a gas outlet pipe is provided on the upper part of the side wall of the pyrolysis reactor, a heat recovery mechanism connected to the drying mechanism is provided on the gas outlet pipe, a discharge pipe is provided at the lower part of the side wall of the pyrolysis reactor, and a feed pipe is provided at the top of the pyrolysis reactor.

[0008] As a further improvement of the present invention, the crushing mechanism includes a rotating frame arranged on the inner side of the crushing box, and a plurality of screening mesh plates are fixedly embedded on the side walls of the rotating frame. The plurality of screening mesh plates are arranged at equal intervals along the circumference of the rotating frame. A plurality of partitions are fixed on the inner wall of the rotating frame, and the partitions are located between adjacent screening mesh plates. A grinding box is provided on the inner side of the rotating frame, and arc-shaped plates are fixed on the opposite side walls of the grinding box, and the arc-shaped plates are fitted with the inner wall of the rotating frame. A grinding rotor is provided inside the grinding box, and a driving mechanism connected to the rotating frame and the grinding rotor is provided on the outer wall of the crushing box. The grinding box is fixed on the side wall of the box cover.

[0009] As a further improvement of the present invention, the drying mechanism includes a drying cylinder arranged on the upper end of the top plate, a cylinder cover is fixed to the upper end of the drying cylinder, the upper end of the cylinder cover is connected to the feed hopper, a rotating cylinder is provided inside the drying cylinder, the side walls of the rotating cylinder are evenly distributed with water holes, the lower end of the rotating cylinder passes through the drying cylinder and the top plate and is connected to a material guide pipe, the end of the material guide pipe away from the drying cylinder passes through the box cover and the grinding box, a support bearing is installed between the side wall of the rotating cylinder and the inner wall of the drying cylinder, and the upper end of the cylinder cover is provided with a first motor The output shaft of the first motor passes through the cylinder cover and is fixedly connected to the third gear. A gear ring meshing with the third gear is fixedly sleeved on the side wall of the rotating cylinder. A rotating tube rotatably connected to the cylinder cover is passed through the upper end of the cylinder cover. The lower end of the rotating tube is provided with a stirring structure located inside the rotating cylinder. A hot air blower is provided at the upper end of the cylinder cover, and the output end of the hot air blower is connected to a connecting pipe. The end of the connecting pipe away from the hot air blower is connected to the upper end of the rotating pipe through a rotating ventilation joint. The upper end of the cylinder cover is provided with a rotating structure connected to the rotating pipe.

[0010] As a further improvement of the present invention, the heat recovery mechanism includes a heat exchange tube mounted on the outer wall of the gas outlet pipe, one end of the lower side wall of the heat exchange tube is connected to an air inlet pipe, and the other end of the upper side wall of the heat exchange tube is connected to an air supply pipe, and the end of the air supply pipe away from the heat exchange tube is connected to the input end of the hot air blower, and a plurality of heat exchange fins are fixed on the outer wall of the gas outlet pipe, and the plurality of heat exchange fins are arranged at equal intervals along the circumference of the gas outlet pipe.

[0011] As a further improvement of the present invention, the stirring structure includes a hollow rod fixedly connected to the lower end of the rotating tube, spiral blades and a stirring rod are fixedly sleeved on the side wall of the hollow rod, and a vent hole is provided on the side wall of the hollow rod.

[0012] As a further improvement of the present invention, the rotating structure includes a second motor fixed to the upper end of the cylinder cover, the output shaft of the second motor is fixedly connected to the first gear, the side wall of the hollow rod is fixedly sleeved with a second gear, and the second gear is engaged with the first gear.

[0013] As a further improvement of the present invention, the driving mechanism includes a fixed frame fixed to the outer wall of the shredding box, the interior of the grinding box is provided with a device cavity located below the grinding rotor, the side wall of the shredding box is penetrated by a rotating sleeve rotatably connected to the shredding box, the side wall of the rotating frame is fixed with a guide sleeve sleeved on the outer side of the rotating sleeve, the inner side of the guide sleeve is provided with a tension spring, one end of the tension spring is connected to the rotating sleeve, and the other end of the tension spring is connected to the side wall of the rotating frame, two protrusions are fixed on the side wall of the guide sleeve, the inner wall of the shredding box is provided with six grooves matching the protrusions, and the six grooves are evenly spaced along the circumference of the rotating sleeve, a third motor is installed on the side wall of the fixed frame, and the output shaft of the third motor penetrates the fixed frame The fixed frame is fixedly connected to the second rotating shaft, and the end of the second rotating shaft away from the third motor passes through the rotating sleeve, the rotating frame, the grinding box and extends to the interior of the device cavity. The end of the second rotating shaft located in the device cavity is fixed with a fifth gear, and the first rotating shaft is rotatably connected to the inner bottom wall of the device cavity. The upper end of the first rotating shaft passes through the inner top wall of the device cavity and is fixedly connected to the lower end of the grinding rotor. The fourth gear is fixedly sleeved on the side wall of the first rotating shaft, and the fourth gear is meshed with the fifth gear. The seventh gear is rotatably connected to the inner top wall of the fixed frame, the sixth gear is fixedly sleeved on the side wall of the rotating sleeve, and the eighth gear is fixedly sleeved on the side wall of the second rotating shaft. The sixth gear and the eighth gear are respectively meshed on both sides of the seventh gear.

[0014] As a further improvement of the present invention, a feed pipe is fixed to the lower end of the crushing box, and a screw feed pump is connected between the feed pipe and the feed pipe.

[0015] As a further improvement of the present invention, two first support rods are fixed to the lower end of the top plate, the lower ends of the first support rods are fixed to the upper end of the bottom plate, two second support rods are fixed to the lower end of the crushing box, the lower ends of the second support rods are fixed to the upper end of the bottom plate, and a drainage pipe is provided at the lower part of the side wall of the drying cylinder.

[0016] A method for producing and recycling glass fiber reinforced plastic products, using the above-mentioned glass fiber reinforced plastic product production and recycling equipment, the method comprising the following steps:

[0017] The first step is to introduce the cleaned glass fiber reinforced plastic products (materials) into the drying mechanism for drying;

[0018] The second step is to introduce the dried material into the crushing mechanism for crushing;

[0019] In the third step, the crushed material is introduced into the pyrolysis reactor for pyrolysis reaction to generate pyrolysis gas and residual fiber. The pyrolysis gas is discharged through the gaseous material outlet pipe, and the residual fiber is discharged through the discharge pipe.

[0020] Beneficial effects of the present invention:

[0021] 1. The material is dried efficiently through centrifugal dehydration of the drum (high-speed rotation to remove surface water) and reverse spiral hot air drying of the hollow rod (spiral blades and stirring rods stir the material + vents spray hot air)

[0022] 2. The rotation of the rotating frame is superimposed on the lateral vibration to form a composite motion, which prevents the fiber fragments from clogging the mesh. The screening efficiency is significantly improved compared with screening. The unscreened coarse materials are brought back to the top of the grinding box by the partition for repeated crushing, realizing automatic circulation of crushed powder without manual intervention.

[0023] 3. The innovative design of the heat exchange tube structure nested in the gas outlet pipe achieves efficient heat exchange and can recover heat and directly supply it to the hot air blower through the gas pipe, which can replace the electric heating function and significantly achieve energy saving.

[0024] 4. The first motor drives the drum to rotate, and the second motor drives the hollow rod to rotate in the opposite direction to form a counter-rotating flow: In the centrifugal drying stage, the spiral blades rotate upward to loosen the material to prevent fiber agglomeration; in the hot air drying stage, the stirring rod cuts the material agglomerates, and the vents realize the penetrating flow of hot air, which significantly improves the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic structural diagram of the rotating drum, support bearing, gear ring, third gear, first motor, and material guide pipe of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the rotating tube and stirring structure of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the crushing box, rotating frame, curved plate, grinding box, discharge pipe, and screw feed pump of the present invention;

[0030] Figure 6It is a schematic diagram of the partial cross-sectional structure inside the crushing box of the present invention;

[0031] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0032] Figure 8 It is a structural diagram of the rotating frame, screening mesh plate and partition plate of the present invention;

[0033] Figure 9 This is a schematic structural diagram of the grinding box, the material guide tube, and the curved plate of the present invention;

[0034] Figure 10 It is a structural schematic diagram of the gas outlet pipe and heat exchange fins of the present invention.

[0035] In the figure: 1 bottom plate, 2 first support rod, 3 drainage pipe, 4 drying cylinder, 5 cylinder cover, 6 feed hopper, 7 top plate, 8 crushing box, 9 box cover, 10 material guide pipe, 11 second support rod, 12 screw feed pump, 13 air delivery pipe, 14 heat exchange cylinder, 15 gas outlet pipe, 16 air inlet pipe, 17 feed pipe, 18 pyrolysis reactor, 19 discharge pipe, 20 first motor, 21 hot air blower, 22 connecting pipe, 23 second motor, 24 rotating pipe, 25 first gear, 26 second gear, 27 rotary ventilation joint, 28 rotating cylinder, 29 support Bearing, 30 ring gear, 31 third gear, 32 hollow rod, 33 spiral blade, 34 stirring rod, 35 vent, 36 grinding box, 37 arc plate, 38 rotating frame, 39 feeding pipe, 40 heat exchange fin, 41 grinding rotor, 42 device cavity, 43 first rotating shaft, 44 fourth gear, 45 fifth gear, 46 second rotating shaft, 47 rotating sleeve, 48 sixth gear, 49 seventh gear, 50 fixed frame, 51 third motor, 52 eighth gear, 53 guide sleeve, 54 bump, 55 tension spring, 56 partition, 57 screening mesh plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figures 1-10 A glass fiber reinforced plastic product production and recycling equipment includes a bottom plate 1, a crushing box 8 is provided above the bottom plate 1, a box cover 9 is fixed to one side of the crushing box 8, a crushing mechanism is provided inside the crushing box 8, a top plate 7 is fixed to the top of the crushing box 8, two first support rods 2 are fixed to the lower end of the top plate 7, the lower end of the first support rod 2 is fixed to the upper end of the bottom plate 1, two second support rods 11 are fixed to the lower end of the crushing box 8, the lower end of the second support rod 11 is fixed to the upper end of the bottom plate 1, and a drain pipe 3 is provided at the lower part of the side wall of the drying cylinder 4, through which the water inside the drying cylinder 4 can be discharged.

[0038] The upper end of the top plate 7 is provided with a drying mechanism connected to the crushing mechanism, and the upper end of the bottom plate 1 is provided with a pyrolysis reactor 18 located on the side below the crushing box 8. The pyrolysis reactor 18 is an existing mature technology. A gas outlet pipe 15 is provided on the upper part of the side wall of the pyrolysis reactor 18. A heat recovery mechanism connected to the drying mechanism is provided on the gas outlet pipe 15. A discharge pipe 19 is provided on the lower part of the side wall of the pyrolysis reactor 18. A feed pipe 17 is provided on the top of the pyrolysis reactor 18. A discharge pipe 39 is fixed to the lower end of the crushing box 8. A screw feed pump 12 is connected between the discharge pipe 39 and the feed pipe 17. The glass fiber reinforced plastic products crushed from the crushing box 8 can be introduced into the screw feed pump 12 through the discharge pipe 39, and then the crushed glass fiber reinforced plastic products are introduced into the pyrolysis reactor 18 through the feed pipe 17 for pyrolysis reaction. The crushed glass fiber reinforced plastic products can effectively improve the efficiency and effect of the subsequent pyrolysis reaction.

[0039] In the present invention, the crushing mechanism includes a rotating frame 38 arranged on the inner side of the crushing box 8, and a plurality of screening mesh plates 57 are fixedly embedded on the side walls of the rotating frame 38. The plurality of screening mesh plates 57 are arranged at equal intervals along the circumference of the rotating frame 38. A plurality of partitions 56 are fixed on the inner wall of the rotating frame 38. The partitions 56 are located between adjacent screening mesh plates 57. A grinding box 36 is provided on the inner side of the rotating frame 38. Arc plates 37 are fixed on the opposite side walls of the grinding box 36. The arc plates 37 are in contact with the inner wall of the rotating frame 38. A grinding rotor 41 is provided inside the grinding box 36. A driving mechanism connected to the rotating frame 38 and the grinding rotor 41 is provided on the outer wall of the crushing box 8. The grinding box 36 is fixed on the side wall of the box cover 9.

[0040] The drying mechanism includes a drying cylinder 4 arranged at the upper end of the top plate 7, a cylinder cover 5 is fixed to the upper end of the drying cylinder 4, and a feed hopper 6 is connected to the upper end of the cylinder cover 5. A rotating cylinder 28 is provided inside the drying cylinder 4, and water permeable holes are evenly distributed on the side walls of the rotating cylinder 28. The lower end of the rotating cylinder 28 passes through the drying cylinder 4 and the top plate 7 and is connected to a guide pipe 10. A valve is installed on the side wall of the rotating cylinder 28 near the lower end. The end of the guide pipe 10 away from the drying cylinder 4 passes through the box cover 9 and the grinding box 36. A support bearing 29 is installed between the side wall of the rotating cylinder 28 and the inner wall of the drying cylinder 4. A first motor 20 is provided at the upper end of the cylinder cover 5. The output shaft of the first motor 20 passes through the cylinder cover 5 and is fixedly connected to the third gear 31. A gear ring 30 meshing with the third gear 31 is fixedly sleeved on the side wall of the rotating cylinder 28. By starting the first motor 2 0, the transmission action of the third gear 31 and the ring gear 30 can drive the drum 28 to rotate. When the drum 28 rotates, the glass fiber reinforced plastic products inside the drum 28 can be dried by utilizing the action of centrifugal force, so that the water on the glass fiber reinforced plastic products after cleaning can be more efficiently separated, thereby improving the drying efficiency of the glass fiber reinforced plastic products. The upper end of the drum cover 5 is penetrated by a rotating pipe 24 rotatably connected to the drum cover 5, and the lower end of the rotating pipe 24 is provided with a stirring structure located inside the drum 28. The upper end of the drum cover 5 is provided with a hot air blower 21, and the output end of the hot air blower 21 is connected to a connecting pipe 22. The end of the connecting pipe 22 away from the hot air blower 21 is connected to the upper end of the rotating pipe 24 through a rotating ventilation joint 27. The upper end of the drum cover 5 is provided with a rotating structure connected to the rotating pipe 24.

[0041] The heat recovery mechanism includes a heat exchange cylinder 14 mounted on the outer wall of the gas outlet pipe 15, one end of the lower side wall of the heat exchange cylinder 14 is connected to an air inlet pipe 16, and the other end of the upper side wall of the heat exchange cylinder 14 is connected to an air supply pipe 13. The end of the air supply pipe 13 away from the heat exchange cylinder 14 is connected to the input end of the hot air blower 21, and a plurality of heat exchange fins 40 are fixed on the outer wall of the gas outlet pipe 15. The plurality of heat exchange fins 40 are arranged at equal intervals along the circumference of the gas outlet pipe 15. The pyrolysis gas generated in the pyrolysis reactor 18 is discharged through the gas outlet pipe 15. The heat contained in the pyrolysis gas can be exchanged with the gas inside the heat exchange cylinder 14 through the heat exchange fins 40, and then the hot gas is supplied to the hot air blower 21 through the air supply pipe 13, so that the hot air blower 21 does not generate heat but only ventilates, thereby providing recovered hot gas to the inside of the drying cylinder 4, which can effectively save energy.

[0042] The stirring structure includes a hollow rod 32 fixedly connected to the lower end of the rotating tube 24, and a spiral blade 33 and a stirring rod 34 are fixedly sleeved on the side wall of the hollow rod 32. A vent hole 35 is provided on the side wall of the hollow rod 32. When the rotating drum 28 is used to rotate to dry the glass fiber reinforced plastic products, the spiral blade 33 is in a downward rotation state relative to the glass fiber reinforced plastic products in the rotating drum 28, and the spiral blade 33 can be used to continuously push and squeeze the glass fiber reinforced plastic products downward, so that the water in the glass fiber reinforced plastic products can be squeezed out, thereby strengthening the glass fiber reinforced plastic products. The efficiency of dehydration of fiberglass reinforced plastic products is improved. When the hollow rod 32 is rotated, that is, the spiral blade 33 is in an upward rotation state relative to the glass fiber reinforced plastic products in the rotating drum 28, the spiral blade 33 is rotated to continuously turn the glass fiber reinforced plastic products in the rotating drum 28 upward. At the same time, the stirring rod 34 is used to stir the glass fiber reinforced plastic products. Hot air is introduced into the glass fiber reinforced plastic products in the rotating drum 28 through the vents 35 on the hollow rod 32. The hot air is used to quickly dry the glass fiber reinforced plastic products, which can improve the drying efficiency.

[0043] The rotating structure includes a second motor 23 fixed to the upper end of the cylinder cover 5 , the output shaft of the second motor 23 is fixedly connected to the first gear 25 , and a second gear 26 is fixedly sleeved on the side wall of the hollow rod 32 , and the second gear 26 meshes with the first gear 25 .

[0044] The driving mechanism includes a fixing frame 50 fixed to the outer wall of the shredding box 8, a device chamber 42 located below the grinding rotor 41 is provided inside the grinding box 36, a rotating sleeve 47 rotatably connected to the shredding box 8 is provided through the side wall of the shredding box 8, a guide sleeve 53 is fixed on the side wall of the rotating frame 38 and is sleeved on the outside of the rotating sleeve 47, a tension spring 55 is provided on the inner side of the guide sleeve 53, one end of the tension spring 55 is connected to the rotating sleeve 47, and the other end of the tension spring 55 is connected to the side wall of the rotating frame 38, two protrusions 54 are fixed on the side wall of the guide sleeve 53, six grooves are provided on the inner wall of the shredding box 8 that cooperate with the protrusions 54, and the six grooves are evenly spaced along the circumference of the rotating sleeve 47. A third The output shaft of the motor 51 and the third motor 51 passes through the fixed frame 50 and is fixedly connected to the second rotating shaft 46. The end of the second rotating shaft 46 away from the third motor 51 passes through the rotating sleeve 47, the rotating frame 38, the grinding box 36 and extends to the inside of the device cavity 42. The second rotating shaft 46 is rotatably connected to the grinding box 36 through a bearing. The end of the second rotating shaft 46 located in the device cavity 42 is fixed with a fifth gear 45. The first rotating shaft 43 is rotatably connected to the inner bottom wall of the device cavity 42. The upper end of the first rotating shaft 43 passes through the inner top wall of the device cavity 42 and is fixedly connected to the lower end of the grinding rotor 41. The fourth gear 44 is fixedly sleeved on the side wall of the first rotating shaft 43. The fourth gear 44 is meshed with the fifth gear 45. The inner bottom wall of the fixed frame 50 A seventh gear 49 is rotatably connected to the top wall, a sixth gear 48 is fixedly sleeved on the side wall of the rotating sleeve 47, and an eighth gear 52 is fixedly sleeved on the side wall of the second rotating shaft 46. The sixth gear 48 and the eighth gear 52 are respectively engaged with the two sides of the seventh gear 49. Starting the third motor 51 can drive the second rotating shaft 46 to rotate, and the fourth gear 44 and the fifth gear 45 are used to drive the grinding rotor 41 to rotate. When the grinding rotor 41 rotates, the dried glass fiber reinforced plastic products can be ground and crushed. The transmission action of the sixth gear 48, the eighth gear 52 and the seventh gear 49 can drive the rotating sleeve 47 to rotate, and the rotating frame 38 can be driven to rotate through the rotating sleeve 47. When 38 rotates, the glass fiber reinforced plastic products trapped on the screening mesh plate 57 can be driven back to the top of the grinding box 36, thereby realizing automatic circulation crushing of the glass fiber reinforced plastic products, greatly improving the efficiency of crushing the glass fiber reinforced plastic products, and effectively ensuring that the crushed glass fiber reinforced plastic products can meet the required fineness. Furthermore, when the rotating frame 38 rotates, the protrusion 54 will intermittently enter the groove, and then the guide sleeve 53 will be intermittently squeezed and moved, and the tension spring 55 will pull the guide sleeve 53 back to its original position, and then the guide sleeve 53 can drive the rotating frame 38 to vibrate horizontally through the guide sleeve 53, and then drive the screening mesh plate 57 to vibrate, thereby realizing dynamic screening and improving its screening efficiency.

[0045] When the glass fiber reinforced plastic product production and recycling equipment of the present invention is used, the cleaned glass fiber reinforced plastic products are first put into the rotating drum 28 inside the drying drum 4 from the feed hopper 6, and the first motor 20 is started to drive the third gear 31 to drive the ring gear 30 to rotate the rotating drum 28 at a high speed, and the centrifugal force is used to dry the materials to remove surface moisture.

[0046] Then start the second motor 23 to drive the first gear 25 to rotate, and drive the second gear 26 to make the rotating tube 24 and the hollow rod 32 rotate in opposite directions. At this time, the spiral blades 33 are in an upward rotation state relative to the rotating drum 28 to continuously turn over the material, and the stirring rod 34 helps to break up the lumps. The hot air blower 21 directs the air flow into the hollow rod 32 through the connecting pipe 22 and the rotary vent joint 27, and sprays the air into the interior of the rotating drum 28 from the vent hole 35 to implement hot air drying. The centrifugal water is discharged through the water permeable hole and guided out by the drain pipe 3.

[0047] After the glass fiber reinforced plastic product is dried, the dried material enters the grinding box 36 through the material guide pipe 10, and the third motor 51 is started to drive the second rotating shaft 46 to rotate. The first rotating shaft 43 is driven by the meshing fifth gear 45 and the fourth gear 44 to rotate the grinding rotor 41 to crush the material. The crushed material falls onto the screening mesh plate 57 for screening, and the material that meets the fineness requirement is discharged through the discharge pipe 39.

[0048] At the same time, the second rotating shaft 46 drives the eighth gear 52 to engage with the seventh gear 49 to drive the sixth gear 48 to rotate the rotating sleeve 47, thereby driving the rotating frame 38 to rotate. The partition 56 and the screening mesh plate 57 lift the coarse particles to the top of the grinding box 36 and crush them again. The protrusion 54 and the groove cooperate periodically to make the guide sleeve 53 vibrate laterally under the action of the tension spring 55, thereby enhancing the screening efficiency of the screening mesh plate 57.

[0049] Crushed materials that meet the fineness requirements fall into the bottom of the crushing box 8 and are discharged through the discharge pipe 39. The screw feed pump 12 feeds the crushed materials into the pyrolysis reactor 18 through the feed pipe 17 for pyrolysis. When the pyrolysis gas carrying the residual heat is discharged through the gaseous material outlet pipe 15, the heat exchange fins 40 transfer the heat to the inner cavity of the heat exchange cylinder 14. The external air enters through the air inlet pipe 16, is preheated, and then is transported to the hot air blower 21 for recycling through the air delivery pipe 13. The residual fiber is discharged from the discharge pipe 19.

[0050] A method for producing and recycling glass fiber reinforced plastic products, using a glass fiber reinforced plastic product production and recycling device, the method comprising the following steps:

[0051] The first step is to introduce the cleaned glass fiber reinforced plastic products (materials) into the drying mechanism for drying;

[0052] The second step is to introduce the dried material into the crushing mechanism for crushing;

[0053] In the third step, the crushed material is introduced into the pyrolysis reactor 18 for pyrolysis reaction to generate pyrolysis gas and residual fiber. The pyrolysis gas is discharged through the gas outlet pipe 15, and the residual fiber is discharged through the discharge pipe 19.

[0054] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A glass fiber reinforced plastic product production and recycling device, comprising a bottom plate (1), characterized in that: A crushing box (8) is provided above the bottom plate (1), a box cover (9) is fixed on one side of the crushing box (8), a crushing mechanism is provided inside the crushing box (8), a top plate (7) is fixed on the top of the crushing box (8), a drying mechanism connected to the crushing mechanism is provided on the upper end of the top plate (7), a pyrolysis reaction furnace (18) is provided on the upper end of the bottom plate (1) and is located on the lower side of the crushing box (8), a gas outlet pipe (15) is provided on the upper part of the side wall of the pyrolysis reaction furnace (18), a heat recovery mechanism connected to the drying mechanism is provided on the gas outlet pipe (15), a discharge pipe (19) is provided on the lower part of the side wall of the pyrolysis reaction furnace (18), and a feed pipe (17) is provided on the top of the pyrolysis reaction furnace (18).

2. The glass fiber reinforced plastic product production and recycling equipment according to claim 1, characterized in that: The crushing mechanism comprises a rotating frame (38) arranged on the inner side of the crushing box (8), a plurality of screening mesh plates (57) are fixedly embedded on the side wall of the rotating frame (38), and the plurality of screening mesh plates (57) are arranged at equal intervals along the circumference of the rotating frame (38), a plurality of partition plates (56) are fixed on the inner wall of the rotating frame (38), and the partition plates (56) are located between adjacent screening mesh plates (57), a grinding box (36) is provided on the inner side of the rotating frame (38), and arc plates (37) are fixed on the opposite side walls of the grinding box (36), and the arc plates (37) are in contact with the inner wall of the rotating frame (38), a grinding rotor (41) is provided inside the grinding box (36), and a driving mechanism connected to the rotating frame (38) and the grinding rotor (41) is provided on the outer wall of the crushing box (8), and the grinding box (36) is fixed on the side wall of the box cover (9).

3. The glass fiber reinforced plastic product production and recycling equipment according to claim 2, characterized in that: The drying mechanism comprises a drying cylinder (4) arranged at the upper end of the top plate (7), a cylinder cover (5) is fixed to the upper end of the drying cylinder (4), and the upper end of the cylinder cover (5) is connected to the feed hopper (6), a rotating cylinder (28) is provided inside the drying cylinder (4), and water-permeable holes are evenly distributed on the side wall of the rotating cylinder (28), the lower end of the rotating cylinder (28) passes through the drying cylinder (4) and the top plate (7) and is connected to a material guide pipe (10), and the end of the material guide pipe (10) away from the drying cylinder (4) passes through the box cover (9) and the grinding box (36), a support bearing (29) is installed between the side wall of the rotating cylinder (28) and the inner wall of the drying cylinder (4), and the upper end of the cylinder cover (5) is provided with a first motor (20), and the first motor ( The output shaft of the rotary drum (20) passes through the drum cover (5) and is fixedly connected to the third gear (31); a gear ring (30) meshing with the third gear (31) is fixedly sleeved on the side wall of the rotary drum (28); a rotating tube (24) rotatably connected to the drum cover (5) is passed through the upper end of the drum cover (5); a stirring structure located inside the rotary drum (28) is provided at the lower end of the rotating tube (24); a hot air blower (21) is provided at the upper end of the drum cover (5); the output end of the hot air blower (21) is connected to a connecting tube (22); the end of the connecting tube (22) away from the hot air blower (21) is connected to the upper end of the rotating tube (24) through a rotating ventilation joint (27); and a rotating structure connected to the rotating tube (24) is provided at the upper end of the drum cover (5).

4. The glass fiber reinforced plastic product production and recycling equipment according to claim 3, characterized in that: The heat recovery mechanism comprises a heat exchange tube (14) sleeved on the outer wall of the gas outlet pipe (15); one end of the lower side wall of the heat exchange tube (14) is connected to an air inlet pipe (16); the other end of the upper side wall of the heat exchange tube (14) is connected to an air supply pipe (13); one end of the air supply pipe (13) away from the heat exchange tube (14) is connected to the input end of the hot air blower (21); a plurality of heat exchange fins (40) are fixed on the outer wall of the gas outlet pipe (15); and the plurality of heat exchange fins (40) are arranged at equal intervals along the circumference of the gas outlet pipe (15).

5. The glass fiber reinforced plastic product production and recycling equipment according to claim 3, characterized in that: The stirring structure comprises a hollow rod (32) fixedly connected to the lower end of the rotating tube (24); a spiral blade (33) and a stirring rod (34) are fixedly sleeved on the side wall of the hollow rod (32); and a vent hole (35) is provided on the side wall of the hollow rod (32).

6. The glass fiber reinforced plastic product production and recycling equipment according to claim 3, characterized in that: The rotating structure comprises a second motor (23) fixed to the upper end of the cylinder cover (5); the output shaft of the second motor (23) is fixedly connected to the first gear (25); a second gear (26) is fixedly sleeved on the side wall of the hollow rod (32); and the second gear (26) is meshed with the first gear (25).

7. The glass fiber reinforced plastic product production and recycling equipment according to claim 2, characterized in that: The driving mechanism comprises a fixing frame (50) fixed on the outer wall of the crushing box (8); a device cavity (42) located below the grinding rotor (41) is provided inside the grinding box (36); a rotating sleeve (47) rotatably connected to the crushing box (8) is provided through the side wall of the crushing box (8); a guide sleeve (53) sleeved on the outer side of the rotating sleeve (47) is fixed on the side wall of the rotating frame (38); a tension spring (55) is provided on the inner side of the guide sleeve (53); one end of the tension spring (55) is connected to the rotating sleeve (47) On the rotating sleeve (47), the other end of the tension spring (55) is connected to the side wall of the rotating frame (38), two protrusions (54) are fixed on the side wall of the guide sleeve (53), and six grooves are provided on the inner wall of the crushing box (8) to match the protrusions (54). The six grooves are evenly spaced along the circumference of the rotating sleeve (47). A third motor (51) is installed on the side wall of the fixing frame (50), and the output shaft of the third motor (51) passes through the fixing frame (50) and is fixedly connected to the second rotating shaft. (46), one end of the second rotating shaft (46) away from the third motor (51) passes through the rotating sleeve (47), the rotating frame (38), the grinding box (36) and extends to the inside of the device cavity (42), one end of the second rotating shaft (46) located in the device cavity (42) is fixed with a fifth gear (45), the inner bottom wall of the device cavity (42) is rotatably connected to the first rotating shaft (43), the upper end of the first rotating shaft (43) passes through the inner top wall of the device cavity (42) and is fixedly connected to the grinding rotor (41) At the lower end, a fourth gear (44) is fixedly sleeved on the side wall of the first rotating shaft (43), and the fourth gear (44) is engaged with the fifth gear (45). A seventh gear (49) is rotatably connected to the inner top wall of the fixed frame (50), a sixth gear (48) is fixedly sleeved on the side wall of the rotating sleeve (47), and an eighth gear (52) is fixedly sleeved on the side wall of the second rotating shaft (46), and the sixth gear (48) and the eighth gear (52) are respectively engaged with the two sides of the seventh gear (49).

8. The glass fiber reinforced plastic product production and recycling equipment according to claim 1, characterized in that: A feed pipe (39) is fixed to the lower end of the crushing box (8), and a screw feed pump (12) is connected between the feed pipe (39) and the feed pipe (17).

9. The glass fiber reinforced plastic product production and recycling equipment according to claim 1, characterized in that: Two first support rods (2) are fixed to the lower end of the top plate (7), and the lower ends of the first support rods (2) are fixed to the upper end of the bottom plate (1); two second support rods (11) are fixed to the lower end of the crushing box (8), and the lower ends of the second support rods (11) are fixed to the upper end of the bottom plate (1); a drainage pipe (3) is provided at the lower part of the side wall of the drying cylinder (4).

10. A method for producing and recycling glass fiber reinforced plastic products, characterized in that: Using the glass fiber reinforced plastic product production and recycling equipment according to any one of claims 1 to 9, the method comprises the following steps: The first step is to introduce the cleaned glass fiber reinforced plastic products (materials) into the drying mechanism for drying; The second step is to introduce the dried material into the crushing mechanism for crushing; In the third step, the crushed material is introduced into a pyrolysis reactor (18) for pyrolysis reaction to generate pyrolysis gas and residual fiber. The pyrolysis gas is discharged through a gaseous material outlet pipe (15), and the residual fiber is discharged through a discharge pipe (19).

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