An eps recycled part refoaming system and method of using the same

Abstract

The present application relates to the technical field of plastic recycling, in particular to an EPS recycling part refoaming system and a using method thereof, which comprises a mounting seat, a supporting frame fixedly connected to the upper surface of the mounting seat, a hot melting assembly fixedly connected above the mounting seat, and a feeding assembly fixedly arranged on the top of the hot melting assembly. The feeding assembly comprises a feeding box, the sidewall of the feeding box is provided with a semicircular crushing shell, a crushing roller is rotatably arranged in the crushing shell, the bottom of the crushing shell is hingedly connected with an arc-shaped elastic screen, the top of the two arc-shaped elastic screens is connected through an upper connecting arc-shaped plate, and the upper connecting arc-shaped plate is hingedly connected with the top of the two arc-shaped elastic screens. When the EPS waste products are crushed to an appropriate size, they will pass through the arc-shaped elastic screen. The EPS waste products that do not pass through the arc-shaped elastic screen will slide to the bottom of the crushing roller again and then be crushed again, so that the size of the crushed EPS waste product particles can meet the preset standard and the poor flowability of the melt can be avoided to cause the machine to be blocked.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling technology, specifically to an EPS recycled component refoaming system and its application method. Background Technology

[0002] EPS granules are a lightweight polymer. They are made by adding a foaming agent to polystyrene resin, heating it to soften it, generating gas, and forming a rigid, closed-cell foam plastic.

[0003] Expandable polystyrene (EPS) is widely used in the packaging industry due to its excellent and long-lasting thermal insulation properties, unique cushioning and shock resistance, anti-aging properties, and water resistance. However, many EPS packaging materials are simply thrown away after use, causing serious environmental pollution. Furthermore, EPS materials are difficult to degrade in the natural environment, making the recycling of waste EPS parts an industry consensus and a policy necessity.

[0004] Waste EPS parts are processed into PS granules through crushing, melting, and granulation. During the molding, crushing, melt extrusion, and other operations, the molecular chains of PS material break, significantly reducing its toughness. The resulting PS granules are generally only used for injection molding or as ordinary fillers and cannot be used for re-foaming. Current EPS granule production processes use suspension polymerization, which involves adding styrene monomer, water, foaming agents, and various additives to a reactor and producing polystyrene granules containing foaming agents through polymerization. These granules are then washed, dehydrated, dried, and sieved to obtain EPS beads. Since suspension polymerization primarily uses styrene monomer, recycled materials cannot be added.

[0005] EPS granules are mostly produced using continuous extrusion. This process involves heating and melting polystyrene granules and additives in an extruder, mixing and plasticizing them, adding a foaming agent to form a homogeneous blend, and then extruding, underwater pelletizing, and drying to obtain EPS beads. The general steps involved are as follows:

[0006] (1) Sort the waste EPS products by color;

[0007] (2) The above-classified EPS waste products are crushed and then granulated by an extrusion granulator. The extrusion granulation temperature is controlled at 160℃~200℃ to obtain PS recycled material.

[0008] (3) The above-mentioned recycled foam PS material, new PS material and additives are weighed and mixed, and the ratio of the three components is 30%: 65%: 5%;

[0009] (4) The PS granules mixed with the above additives are heated to 170-180°C in a plastic extruder, mixed and plasticized, and then injected with 6% pentane. In a semi-molten state, they are extruded through a special die and cut into EPS granules with a diameter of 0.8-1mm through an underwater pelletizer.

[0010] (5) The EPS particles are centrifuged, dehydrated and dried to obtain finished EPS particles. In the process of crushing waste EPS products and then granulating them by an extrusion granulator, the particle size has a great influence on the extrusion process. If the particles are too large, the melt flow will be poor and the machine will be easily blocked. Summary of the Invention

[0011] To address the problems in the existing technology, this invention provides an EPS recycled parts re-foaming system and its usage method, which can reciprocate to crush recycled parts until they meet the standard size. The arc-shaped elastic screen allows the crushed EPS waste products to pass through quickly during the shaking process, ensuring that the size of the crushed EPS waste product particles meets the preset standard and avoiding machine blockage due to poor melt flowability.

[0012] The technical solution adopted by this invention to solve its technical problem is: an EPS recycled component refoaming system and its usage method, including a mounting base, a support frame, a hot-melt assembly, and a feeding assembly. The support frame is fixedly connected to the upper surface of the mounting base, the hot-melt assembly is fixedly connected above the mounting base, and the feeding assembly is fixedly disposed on top of the hot-melt assembly. The feeding assembly includes a feeding box, and a semi-circular crushing shell is provided on the side wall of the feeding box. A crushing roller is rotatably disposed inside the crushing shell. An arc-shaped elastic screen is hinged to the bottom of the crushing shell. The tops of the two arc-shaped elastic screens are connected by an upper connecting arc plate, and the upper connecting arc plate is hinged to the tops of the two arc-shaped elastic screens. A guide arc plate is fixedly disposed on the inner wall of the feeding box, and the guide arc plate is positioned above the crushing roller.

[0013] Specifically, a support shaft is rotatably mounted in the middle of the feed box, and a vibration spring is fixedly connected to the side wall of the support shaft. The other end of the vibration spring is fixedly connected to the bottom of the arc-shaped elastic screen.

[0014] Specifically, a conical box is fixedly connected to the bottom of the feed box, a lower connecting rod is fixedly connected to the middle of the lower surface of the supporting shaft, a lightweight plate is fixedly connected to the bottom of the lower connecting rod, and the lightweight plate is inserted into the middle of the conical box.

[0015] Specifically, a buffer guide plate is rotatably mounted on the top inner wall of the feed box via a rotating shaft. An arc-shaped spring is fixedly connected to the lower surface of one end of the buffer guide plate near the inner wall of the feed box, and the lower end of the arc-shaped spring is fixedly connected to the inner wall of the feed box.

[0016] Specifically, one end of the shaft passes through the side wall of the feed box, and a rotating gear is fixedly connected to the end of the shaft. A reversing gear is rotatably provided on the outer wall of the feed box. The reversing gear meshes with the rotating gear, and a connecting shaft is fixedly connected to the middle of the reversing gear.

[0017] Specifically, the supporting rotating shaft passes through the side wall of the feed box, and a lightweight rotating disk is fixedly connected to the end of the feed box. The lightweight rotating disk is connected to the connecting shaft via a belt.

[0018] Specifically, a side motor and an outer cover are fixedly connected to the outer wall of the feed box. A first bevel gear is fixedly connected to the output end of the side motor. The first bevel gear is placed inside the outer cover. A second bevel gear is meshed on one side of the first bevel gear. One end of the second bevel gear is fixedly connected to the crushing roller through a connecting shaft.

[0019] Specifically, the hot melt assembly includes a transmission pipe, which is fixedly connected to the support frame, and the lower end of the centralized conical box is connected through the transmission pipe.

[0020] Specifically, the outer wall of the transmission pipe is wrapped with an insulation sleeve, and a heating wire is provided in the interlayer between the insulation sleeve and the transmission pipe. A drive motor is fixedly installed at one end of the upper surface of the mounting base, and a drive shaft is fixedly connected to the output end of the drive motor. The drive shaft passes through the inner wall of the transmission pipe, and a pushing auger is fixedly connected to one end of the drive shaft inside the transmission pipe. A discharge mold is fixedly connected to the other end of the transmission pipe away from the drive shaft.

[0021] The present invention also provides a method for using the EPS recycled component refoaming system using the above-mentioned technical solution, the steps of which are as follows:

[0022] S1. First, place the EPS waste products on the upper surface of the buffer guide plate set at the top of the feeding box. The EPS waste products will slide down along the upper surface of the buffer guide plate into the feeding box. The arc-shaped elastic screen is set at an inclination. The EPS waste products will slide down along the arc-shaped elastic screen to the bottom for crushing.

[0023] S2. The output end of the side motor drives the first bevel gear to rotate, and the first bevel gear drives the crushing roller to rotate through the second bevel gear. The crushing roller crushes the EPS waste products while rotating.

[0024] S3. After the crushed EPS waste product particles enter the transmission pipe, the rotation of the drive motor drives the transmission shaft to rotate. During the rotation of the transmission shaft, the drive shaft can drive the auger to rotate. During the rotation of the auger, the crushed EPS waste product particles are pushed to move along the inner wall of the transmission pipe. The heating wire set in the insulation sleeve can heat melt the EPS waste product particles placed inside the transmission pipe. They are then extruded through the discharge mold and underwater cut into EPS particles of 0.18-1mm.

[0025] S4: Centrifuge, dehydrate, dry, weigh, and package the finished EPS pellets.

[0026] The beneficial effects of this invention are:

[0027] (1) When EPS waste products slide into the feed box, they will fall onto the upper surface of the arc-shaped elastic screen. The arc-shaped elastic screen can play a good buffering role. At the same time, the arc-shaped elastic screen will shake under the impact of the EPS waste products, which can make the crushed EPS waste products pass through quickly and avoid the phenomenon of blockage of the arc-shaped elastic screen. The arc-shaped elastic screen is set at an inclination, and the EPS waste products will slide along the arc-shaped elastic screen to the bottom for crushing.

[0028] (2) The buffer guide plate of the present invention will rotate and become inclined. The arc spring connected to the lower surface will be compressed. The EPS waste products will slide down along the upper surface of the buffer guide plate into the feed box, which can play a buffering role to prevent the EPS waste products from directly and quickly hitting the components inside the feed box, and protect the components inside the feed box.

[0029] (3) The crushing roller of the present invention crushes EPS waste products. The crushing roller throws the crushed EPS particles from the top onto the arc-shaped elastic screen. When the EPS waste products are crushed to an appropriate size, they will pass through the arc-shaped elastic screen. The EPS waste products that do not pass through the arc-shaped elastic screen will slide back to the bottom of the crushing roller and be crushed again until they can pass through the arc-shaped elastic screen, ensuring that the size of the crushed EPS waste product particles can meet the preset standard.

[0030] (4) The lightweight rotating disk of the present invention can drive the supporting rotating shaft to rotate during the rotation process. During the rotation process, the supporting rotating shaft can drive the arc-shaped elastic screen to shake through the vibration spring, which is conducive to the passage of the crushed EPS waste product particles. At the same time, it can also prevent the arc-shaped elastic screen from shaking. It can also be rotated manually to speed up the passage of EPS waste product particles. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Figure 1 A schematic diagram of the overall structure of an EPS recycled component refoaming system and its usage method provided by the present invention;

[0033] Figure 2 The mounting base and support frame provided by this invention are shown in the position diagram.

[0034] Figure 3 This is a three-dimensional structural diagram of the feed box provided by the present invention;

[0035] Figure 4 Provided by the present invention Figure 3 Enlarged view of point A in the middle;

[0036] Figure 5 A cross-sectional view of the feed box provided by the present invention;

[0037] Figure 6 An internal view of the outer casing provided by the present invention;

[0038] Figure 7 This is a cross-sectional plan view of the feed box provided by the present invention.

[0039] In the diagram: 1. Mounting base; 11. Support frame; 3. Hot melt assembly; 31. Drive motor; 311. Drive shaft; 32. Transmission pipe; 33. Insulation sleeve; 34. Discharge mold; 35. Driving auger;

[0040] 2. Feeding assembly; 21. Feeding box; 211. Crushing shell; 22. Buffer guide plate; 221. Arc spring; 222. Rotating gear; 223. Reversing gear; 224. Connecting shaft; 23. Concentrated conical box; 24. Guide arc plate; 25. Crushing roller; 26. Arc elastic screen; 27. Upper connecting arc plate; 28. Vibration spring; 29. ​​Support shaft; 291. Lower connecting rod; 292. Lightweight plate;

[0041] 4. Side motor; 41. Outer casing; 42. First bevel gear; 43. Second bevel gear; 6. Lightweight rotating disc; 61. Belt. Detailed Implementation

[0042] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0043] Example 1:

[0044] like Figures 1-7As shown, the EPS recycled component refoaming system of the present invention includes a mounting base 1, a support frame 11, a hot melt assembly 3, and a feeding assembly 2. The support frame 11 is fixedly connected to the upper surface of the mounting base 1, the hot melt assembly 3 is fixedly connected above the mounting base 1, and the feeding assembly 2 is fixedly disposed on top of the hot melt assembly 3. The feeding assembly 2 includes a feeding box 21, and a semi-circular crushing shell 211 is provided on the side wall of the feeding box 21. A crushing roller 25 is rotatably disposed inside the crushing shell 211. An arc-shaped elastic screen 26 is hinged to the bottom of the crushing shell 211. The tops of the two arc-shaped elastic screens 26 are connected by an upper connecting arc plate 27. The upper connecting arc plate 27 is hinged to the tops of the two arc-shaped elastic screens 26. A guide arc plate 24 is fixedly disposed on the inner wall of the feeding box 21, and the guide arc plate 24 is positioned above the crushing roller 25.

[0045] The hot melt component 3 can melt the crushed EPS recycled parts and then extrude them, which is beneficial for the reuse of EPS recycled parts. The feeding component 2 can ensure that the particles are uniform during the crushing process of EPS recycled parts, and avoid clogging the machine due to large crushed particles and poor melt flow.

[0046] It should be noted that when EPS waste products enter the feed box 21, they first fall onto the upper surface of the arc-shaped elastic screen 26. The arc-shaped elastic screen 26 can play a good buffering role. Under the impact of the EPS waste products, the arc-shaped elastic screen 26 will shake. During the shaking process, the shredded EPS waste products can pass through quickly, and at the same time, it can also prevent the arc-shaped elastic screen 26 from clogging. The arc-shaped elastic screen 26 is set at an incline, and the EPS waste products will slide down the arc-shaped elastic screen 26 to the bottom for shredding.

[0047] Furthermore, the upper connecting arc plate 27 serves as a connector, preventing EPS recycled parts from passing directly between the two arc-shaped elastic screens 26 during operation and causing blockage of the hot-melt assembly 3. The guide arc plate 24 ensures that the EPS recycled parts particles thrown from above the crushing roller 25 are more concentrated, while also preventing EPS recycled parts particles from splashing out of the feed box 21.

[0048] Specifically, a support shaft 29 is rotatably mounted in the middle of the feed box 21, and a vibration spring 28 is fixedly connected to the side wall of the support shaft 29. The other end of the vibration spring 28 is fixedly connected to the bottom of the arc-shaped elastic screen 26.

[0049] In this embodiment, the supporting shaft 29 can drive the arc-shaped elastic screen 26 to shake during rotation via the vibration spring 28, which is beneficial for the passage of crushed EPS waste product particles, and at the same time can prevent the arc-shaped elastic screen 26 from shaking.

[0050] Specifically, a central conical box 23 is fixedly connected to the bottom of the feed box 21, a lower connecting rod 291 is fixedly connected to the middle of the lower surface of the supporting rotating shaft 29, a lightweight plate 292 is fixedly connected to the bottom of the lower connecting rod 291, and the lightweight plate 292 is inserted into the middle of the central conical box 23.

[0051] Furthermore, manual rotation can be used to accelerate the passage of EPS waste product particles. During the shaking process, the supporting shaft 29 drives the lightweight plate 292 to shake through the lower connecting rod 291 at the bottom, thereby preventing the EPS waste product particles in the concentrated conical box 23 from becoming blocked when entering the transmission pipe 32.

[0052] Specifically, a buffer guide plate 22 is rotatably mounted on the top inner wall of the feed box 21 via a rotating shaft. An arc-shaped spring 221 is fixedly connected to the lower surface of one end of the buffer guide plate 22 near the inner wall of the feed box 21, and the lower end of the arc-shaped spring 221 is fixedly connected to the inner wall of the feed box 21.

[0053] In this embodiment, under pressure, the buffer guide plate 22 will rotate and become tilted, and the arc spring 221 connected to the lower surface will be compressed. The arc spring 221 plays a buffering role. At the same time, when there are no EPS waste products on the upper surface of the buffer guide plate 22, the buffer guide plate 22 will return to the initial position under the push of the arc spring 221. The buffer guide plate 22 can also prevent the crushed particles from splashing to the outside of the feed box 21 during the crushing process.

[0054] Specifically, one end of the rotating shaft penetrates the side wall of the feed box 21, and a rotating gear 222 is fixedly connected to the end of the rotating shaft. A reversing gear 223 is rotatably provided on the outer wall of the feed box 21. The reversing gear 223 meshes with the rotating gear 222, and a connecting shaft 224 is fixedly connected to the middle of the reversing gear 223. The supporting rotating shaft 29 penetrates the side wall of the feed box 21, and a lightweight rotating disk 6 is fixedly connected to the end of the feed box 21. The lightweight rotating disk 6 is connected to the connecting shaft 224 via a belt 61.

[0055] It should be noted that during the feeding process, whenever the buffer guide plate 22 rotates, the rotating gear 222 connected to the side wall will also rotate at a certain angle. The rotating gear 222 transmits power to the reversing gear 223, which in turn drives the connecting shaft 224 to rotate synchronously. The connecting shaft 224 drives the lightweight rotating disk 6 to rotate via the belt 61. During the rotation of the lightweight rotating disk 6, the supporting rotating shaft 29 can drive the arc-shaped elastic screen 26 to shake via the vibration spring 28. This facilitates the passage of crushed EPS waste product particles and also prevents the arc-shaped elastic screen 26 from shaking. It can also be manually rotated to speed up the passage of EPS waste product particles. During the shaking of the supporting rotating shaft 29, the lower connecting rod 291 at the bottom drives the lightweight plate 292 to shake, thereby preventing the EPS waste product particles in the concentrated conical box 23 from getting stuck when entering the transmission pipe 32.

[0056] Specifically, a side motor 4 and an outer cover 41 are fixedly connected to the outer wall of the feed box 21. A first bevel gear 42 is fixedly connected to the output end of the side motor 4. The first bevel gear 42 is placed inside the outer cover 41. A second bevel gear 43 is meshed on one side of the first bevel gear 42. One end of the second bevel gear 43 is fixedly connected to the crushing roller 25 through a connecting shaft.

[0057] In actual operation, the side motor 4 is turned on, and the output end of the side motor 4 drives the first bevel gear 42 to rotate. The first bevel gear 42 drives the crushing roller 25 to rotate through the second bevel gear 43. During the rotation, the crushing roller 25 can crush the EPS waste products. The EPS waste products enter from the bottom of the crushing roller 25, and then are thrown from the top of the crushing roller 25 by inertia onto the arc-shaped elastic screen 26. When the EPS waste products are crushed to an appropriate size, they will pass through the arc-shaped elastic screen 26. The EPS waste products that do not pass through the arc-shaped elastic screen 26 will slide back to the bottom of the crushing roller 25 and be crushed again until they can pass through the arc-shaped elastic screen 26, ensuring that the size of the crushed EPS waste product particles meets the preset standard, and preventing the machine from clogging due to poor melt flow.

[0058] Example 2:

[0059] Basically the same as in Example 1, such as Figure 1-7As shown, the difference lies in the following: the hot melt assembly 3 includes a transmission pipe 32, which is fixedly connected to the support frame 11, and the lower end of the centralized conical box 23 is connected through the transmission pipe 32. The outer wall of the transmission pipe 32 is wrapped with an insulation sleeve 33, and a heating wire is provided in the interlayer between the insulation sleeve 33 and the transmission pipe 32. A drive motor 31 is fixedly installed at one end of the upper surface of the mounting base 1, and a transmission shaft 311 is fixedly connected to the output end of the drive motor 31. The transmission shaft 311 drives through to the inner wall of the transmission pipe 32, and a pushing auger 35 is fixedly connected to one end of the transmission shaft 311 inside the transmission pipe 32. A discharge mold 34 is fixedly connected to the other end of the transmission pipe 32 away from the transmission shaft 311.

[0060] After the crushed EPS waste product particles enter the transmission pipe 32, the drive motor 31 drives the transmission shaft 311 to rotate. During the rotation of the transmission shaft 311, the drive shaft 311 can drive the auger 35 to rotate. During the rotation of the auger 35, the crushed EPS waste product particles can be moved along the inner wall of the transmission pipe 32. The heating wire installed in the insulation sleeve 33 can heat melt the EPS waste product particles placed inside the transmission pipe 32 and extrude them through the discharge mold 34.

[0061] The present invention also provides a method for using an EPS recycled component refoaming system, the method comprising the following steps:

[0062] S1. First, place the EPS waste products on the upper surface of the buffer guide plate 22 set at the top of the feed box 21. The EPS waste products will slide down along the upper surface of the buffer guide plate 22 into the feed box 21. The arc-shaped elastic screen 26 is set at an inclination. The EPS waste products will slide down along the arc-shaped elastic screen 26 to the bottom for crushing.

[0063] S2, the output end of the side motor 4 drives the first bevel gear 42 to rotate, the first bevel gear 42 drives the crushing roller 25 to rotate through the second bevel gear 43, and the crushing roller 25 crushes the EPS waste products while rotating;

[0064] S3. After the crushed EPS waste product particles enter the transmission pipe 32, the rotation of the drive motor 31 drives the transmission shaft 311 to rotate. During the rotation of the transmission shaft 311, the drive shaft 311 can drive the auger 35 to rotate. During the rotation of the auger 35, the crushed EPS waste product particles are pushed to move along the inner wall of the transmission pipe 32. The heating wire installed in the insulation sleeve 33 can heat melt the EPS waste product particles placed inside the transmission pipe 32. The particles are then extruded through the discharge mold 34 and underwater cut into EPS particles of 0.18-1mm.

[0065] S4: Centrifuge, dehydrate, dry, weigh, and package the finished EPS pellets.

[0066] Working principle: The steps for re-foaming recycled EPS parts are as follows:

[0067] (1) Sort the waste EPS products by color;

[0068] (2) The above-classified EPS waste products are crushed and then granulated by an extrusion granulator. The extrusion granulation temperature is controlled at 160℃~200℃ to obtain PS recycled material.

[0069] (3) The above-mentioned recycled foam PS material, new PS material and additives are weighed and mixed, and the ratio of the three components is 30%: 65%: 5%;

[0070] (4) The PS granules mixed with the above additives are heated to 170-180°C in a plastic extruder, mixed and plasticized, and then injected with 6% pentane. In a semi-molten state, they are extruded through a special die and cut into EPS granules with a diameter of 0.8-1mm through an underwater pelletizer.

[0071] (5) The EPS particles are centrifuged, dehydrated and dried to obtain finished EPS particles.

[0072] During the crushing process of sorted EPS waste products, the EPS waste products are first placed on the upper surface of the buffer guide plate 22 set at the top of the feed box 21. Under the action of pressure, the buffer guide plate 22 will rotate and become tilted, and the arc spring 221 connected to the lower surface will be compressed. The EPS waste products will slide down along the upper surface of the buffer guide plate 22 into the feed box 21, which can play a buffering role and prevent the EPS waste products from directly and quickly impacting the components inside the feed box 21, thus protecting the components inside the feed box 21. When EPS waste products enter the feed box 21, they first fall onto the upper surface of the arc-shaped elastic screen 26. The arc-shaped elastic screen 26 can play a good buffering role. Under the impact of the EPS waste products, the arc-shaped elastic screen 26 will shake. During the shaking process, the shredded EPS waste products can pass through quickly, and at the same time, it can also prevent the arc-shaped elastic screen 26 from clogging. The arc-shaped elastic screen 26 is set at an inclination, and the EPS waste products will slide down the arc-shaped elastic screen 26 to the bottom for shredding.

[0073] When the side motor 4 is turned on, its output drives the first bevel gear 42 to rotate. The first bevel gear 42 drives the crushing roller 25 to rotate through the second bevel gear 43. During the rotation, the crushing roller 25 crushes the EPS waste products. The EPS waste products enter from the bottom of the crushing roller 25 and are then thrown towards the arc-shaped elastic screen 26 from the top of the crushing roller 25 due to inertia. When the EPS waste products are crushed to an appropriate size, they will pass through the arc-shaped elastic screen 26. EPS waste products that do not pass through the arc-shaped elastic screen 26 will slide back to the bottom of the crushing roller 25 and be crushed again until they can pass through the arc-shaped elastic screen 26. This ensures that the size of the crushed EPS waste product particles meets the preset standard and avoids clogging the machine due to poor melt flowability.

[0074] During the feeding process, whenever the buffer guide plate 22 rotates, the rotating gear 222 connected to the side wall will also rotate at a certain angle. The rotating gear 222 transmits power to the reversing gear 223, which in turn drives the connecting shaft 224 to rotate synchronously. The connecting shaft 224 drives the lightweight rotating disk 6 to rotate via the belt 61. During the rotation of the lightweight rotating disk 6, the supporting rotating shaft 29 can rotate. During the rotation of the supporting rotating shaft 29, the arc-shaped elastic screen 26 can be shaken by the vibration spring 28, which is conducive to the passage of crushed EPS waste product particles. At the same time, it can also prevent the arc-shaped elastic screen 26 from shaking. It can also be manually rotated to speed up the passage of EPS waste product particles. During the shaking of the supporting rotating shaft 29, the lightweight plate 292 is shaken by the lower connecting rod 291 set at the bottom, which can prevent the EPS waste product particles in the concentrated conical box 23 from being blocked when entering the transmission pipe 32.

[0075] After the crushed EPS waste product particles enter the transmission pipe 32, the drive motor 31 drives the transmission shaft 311 to rotate. During the rotation of the transmission shaft 311, the drive shaft 311 can drive the auger 35 to rotate. During the rotation of the auger 35, the crushed EPS waste product particles can be moved along the inner wall of the transmission pipe 32. The heating wire installed in the insulation sleeve 33 can heat melt the EPS waste product particles placed inside the transmission pipe 32 and extrude them through the discharge mold 34.

[0076] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention.

Claims

1. An EPS recycled component refoaming system, comprising a mounting base (1), a support frame (11), a hot melt assembly (3), and a feeding assembly (2), wherein the support frame (11) is fixedly connected to the upper surface of the mounting base (1), the hot melt assembly (3) is fixedly connected above the mounting base (1), and the feeding assembly (2) is fixedly disposed on the top of the hot melt assembly (3), characterized in that: The feeding assembly (2) includes a feeding box (21), and a semi-circular crushing shell (211) is provided on the side wall of the feeding box (21). A crushing roller (25) is rotatably arranged inside the crushing shell (211). An arc-shaped elastic screen (26) is hinged to the bottom of the crushing shell (211). The tops of the two arc-shaped elastic screens (26) are connected by an upper connecting arc plate (27). The upper connecting arc plate (27) is hinged to the tops of the two arc-shaped elastic screens (26). A guide arc plate (24) is fixedly provided on the inner wall of the feeding box (21). The guide arc plate (24) is placed above the crushing roller (25). A support shaft (29) is rotatably provided in the middle of the feed box (21). A vibration spring (28) is fixedly connected to the side wall of the support shaft (29). The other end of the vibration spring (28) is fixedly connected to the bottom of the arc-shaped elastic screen (26). The bottom of the feed box (21) is fixedly connected to a conical box (23), and the lower connecting rod (291) is fixedly connected to the middle of the lower surface of the support shaft (29). The bottom of the lower connecting rod (291) is fixedly connected to a lightweight plate (292), and the lightweight plate (292) is inserted into the middle of the conical box (23). The top inner wall of the feed box (21) is provided with a buffer guide plate (22) which is rotatably provided by a rotating shaft. An arc spring (221) is fixedly connected to the lower surface of one end of the buffer guide plate (22) near the inner wall of the feed box (21). The lower end of the arc spring (221) is fixedly connected to the inner wall of the feed box (21). One end of the shaft passes through the side wall of the feed box (21), and a rotating gear (222) is fixedly connected to the end of the shaft. A reversing gear (223) is rotatably provided on the outer wall of the feed box (21). The reversing gear (223) meshes with the rotating gear (222), and a connecting shaft (224) is fixedly connected to the middle of the reversing gear (223). The supporting shaft (29) passes through the side wall of the feed box (21), and a lightweight rotating disk (6) is fixedly connected to the end of the feed box (21). The lightweight rotating disk (6) is connected to the connecting shaft (224) via a belt (61).

2. The EPS recycled component refoaming system according to claim 1, characterized in that: The outer wall of the feed box (21) is fixedly connected to a side motor (4) and an outer cover (41). The output end of the side motor (4) is fixedly connected to a first bevel gear (42). The first bevel gear (42) is placed inside the outer cover (41). A second bevel gear (43) is meshed on one side of the first bevel gear (42). One end of the second bevel gear (43) is fixedly connected to the crushing roller (25) through a connecting shaft.

3. The EPS recycled component refoaming system according to claim 2, characterized in that: The hot melt assembly (3) includes a transmission pipe (32), which is fixedly connected to the support frame (11), and the lower end of the centralized conical box (23) is connected through the transmission pipe (32).

4. The EPS recycled component refoaming system according to claim 3, characterized in that: The outer wall of the transmission pipe (32) is wrapped with a heat insulation sleeve (33). A heating wire is provided in the interlayer between the heat insulation sleeve (33) and the transmission pipe (32). A drive motor (31) is fixedly installed at one end of the upper surface of the mounting base (1). A transmission shaft (311) is fixedly connected to the output end of the drive motor (31). The transmission shaft (311) drives through to the inner wall of the transmission pipe (32). A push auger (35) is fixedly connected to one end of the transmission shaft (311) inside the transmission pipe (32). A discharge mold (34) is fixedly connected to one end of the transmission pipe (32) away from the transmission shaft (311).

5. A method of using the EPS recycled component refoaming system according to claim 4, characterized in that: The method includes the following steps: S1. First, place the EPS waste products on the upper surface of the buffer guide plate (22) set at the top of the feed box (21). The EPS waste products will slide down along the upper surface of the buffer guide plate (22) into the feed box (21). The arc-shaped elastic screen (26) is set at an inclination. The EPS waste products will slide down along the arc-shaped elastic screen (26) to the bottom for crushing. S2, the output end of the side motor (4) drives the first bevel gear (42) to rotate, and the first bevel gear (42) drives the crushing roller (25) to rotate through the second bevel gear (43). The crushing roller (25) crushes the EPS waste products while rotating. S3. After the crushed EPS waste product particles enter the transmission pipe (32), the rotation of the drive motor (31) drives the transmission shaft (311) to rotate. During the rotation of the transmission shaft (311), it can drive the auger (35) to rotate. During the rotation of the auger (35), it pushes the crushed EPS waste product particles to move along the inner wall of the transmission pipe (32). The heating wire set in the heat insulation sleeve (33) can heat melt the EPS waste product particles placed inside the transmission pipe (32). They are extruded through the discharge mold (34) and cut underwater into EPS particles of 0.18-1mm. S4: Centrifuge, dehydrate, dry, weigh, and package the finished EPS pellets.

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