A waste polystyrene foam crushing and melting integrated treatment device

Abstract

The utility model discloses a kind of waste polystyrene foam crushing melting integrated treatment device, belong to waste plastic recycling equipment field, to solve the problem of waste polystyrene foam bulky, conveying difficult and crushing-melting process separation;The device includes rack, feed hopper, crushing mechanism, first conveying mechanism, melting mechanism, second conveying mechanism, cooling mechanism and discharge port;Feed hopper, crushing mechanism, first conveying mechanism, melting mechanism, second conveying mechanism, cooling mechanism are sequentially integrated in rack by fixed connection, form continuous processing flow;Melting mechanism contains electric heating tube and stirring component, cooling mechanism is water cooling jacket, can output high-density foam melt block;The device realizes crushing and melting integration, volume is reduced by more than 80% than original foam, conveying cost is reduced by more than 70%, processing efficiency is high, occupies small, suitable for waste polystyrene foam pretreatment, provide convenience for subsequent preparation polystyrene particle.

Description

Technical Field

[0001] This utility model belongs to the technical field of waste plastic recycling and processing equipment, and relates to an integrated processing device for crushing and melting waste polystyrene foam. Background Technology

[0002] Waste plastics are recycled and processed into polystyrene granules. In actual recycling, waste polystyrene foam (such as waste appliance packaging foam, building insulation foam, etc.) is one of the main recycling targets. However, this type of waste foam has significant problems of being lightweight and bulky: on the one hand, large amounts of scattered waste foam are difficult to load efficiently, resulting in extremely low space utilization of transport vehicles, leading to high costs and low efficiency in transporting it from the recycling point to the company's internal processing workshop; on the other hand, existing processing equipment often separates "crushing" and "melting" into two independent processes, requiring separate crushing and melting equipment. This not only occupies a large area and has high equipment investment costs, but also requires additional conveying structures between the two processes, further increasing operational complexity and energy consumption.

[0003] To solve the above problems, it is necessary to design a device that integrates "foam crushing" and "fragment melting" to achieve continuous pretreatment of waste polystyrene foam, directly output small-volume, high-mass foam flocs, reduce transportation difficulty and cost, and simplify equipment structure and improve processing efficiency. Utility Model Content

[0004] The purpose of this invention is to address the problems of "large volume and difficult transportation" and "separation of crushing and melting processes and low efficiency" in the recycling of waste polystyrene foam. This invention provides an integrated crushing and melting treatment device for waste polystyrene foam, which realizes continuous crushing and melting operations, outputs easily transportable foam briquettes, and reduces equipment footprint and transportation costs.

[0005] The technical solution adopted in this utility model is as follows: An integrated waste polystyrene foam crushing and melting processing device integrates a feeding hopper, crushing mechanism, first conveying mechanism, melting mechanism, second conveying mechanism, cooling mechanism, and discharge port through a frame, forming an integrated process of "feeding → crushing → conveying → melting → conveying → cooling → discharging". The crushing mechanism crushes the waste foam into small-diameter fragments, which are convenient for subsequent melting. The melting mechanism heats the foam with electric heating tubes and works in conjunction with a stirring component to ensure that the fragments melt evenly. The cooling mechanism shapes the melted material into a high-density molten block. All mechanisms are fixedly connected to achieve continuous operation without the need for additional intermediate conveying equipment.

[0006] Overall structure installation The frame is made of Q235 steel plate, welded together, with a height of 2.2m, a length of 4.5m, and a width of 1.2m. The bottom is equipped with leveling pads to ensure the stability of the device. Feed hopper: Made of stainless steel plate, with an upper opening size of 0.8m×0.6m and a lower opening size of 0.3m×0.2m. It is fixed to one side of the top of the frame and has two "V" shaped guide plates (made of stainless steel, 3mm thick) welded inside. The bottom of the guide plate is 50mm away from the feed end of the crushing mechanism to prevent feed blockage. Crushing Mechanism: The crushing box is made of stainless steel (5mm thick), fixed to the frame and located directly below the feed hopper; two crushing rollers (180mm diameter, 300mm length, made of 45# steel) are installed in parallel and rotate inside the crushing box, with crushing teeth (30mm pitch) welded to the outer circumference of the rollers with a height of 20mm; the crushing drive is a geared motor (1.5kW power, 1440r / min speed), fixed to the side of the frame, and connected to one of the crushing rollers through a coupling. The two crushing rollers rotate in opposite directions through gear meshing (60r / min speed). The first conveying mechanism is a screw conveyor (conveying cylinder diameter 150mm, length 1.2m, stainless steel material), fixed on the frame. The feed end of the conveying cylinder is fixedly connected to the discharge port (diameter 150mm) at the bottom of the crushing box via a flange, and the discharge end of the conveying cylinder is fixedly connected to the feed port of the melting mechanism via a flange. The conveying drive is a stepper motor (power 0.75kW, speed 960r / min), connected to the conveying shaft via a reducer. The conveying shaft speed is adjustable (10-20r / min). Melting Mechanism: The melting cylinder is made of stainless steel (200mm diameter, 1.5m length, 8mm wall thickness) and fixed in the middle of the frame; electric heating tubes (3kW power, 4 tubes) are evenly embedded inside the cylinder wall and distributed along the axial direction of the melting cylinder; the temperature controller (model K thermocouple temperature controller) is fixed on the outside of the melting cylinder and connected to the electric heating tubes through wires to control the temperature inside the melting cylinder at 160-180℃; the stirring assembly includes a stirring shaft (50mm diameter, 1.4m length) and a stirring drive (1.1kW power, 750r / min speed), with 3 sets of stirring blades welded on the stirring shaft (blade width 80mm, thickness 5mm), and the stirring shaft is driven by the stirring drive at a speed of 30-50r / min; a stainless steel filter screen (2.5mm aperture) is fixed inside the discharge end at the bottom of the melting cylinder to filter impurities mixed in during the melting process; The second conveying mechanism has the same structure as the first conveying mechanism (conveying cylinder diameter 150mm, length 1.0m). The feeding end of the conveying cylinder is fixedly connected to the bottom outlet of the melting cylinder through a flange, and the discharging end of the conveying cylinder is connected to the outlet. Cooling mechanism: The cooling jacket is made of stainless steel (inner diameter 160mm, length 1.0m, thickness 5mm), and is fixedly sleeved on the outside of the conveying cylinder of the second conveying mechanism, forming a 10mm wide cooling cavity between the cooling jacket and the conveying cylinder; the inlet pipe (diameter 20mm) and the outlet pipe (diameter 20mm) are both PVC pipes, which are connected to the bottom and top of the cooling cavity respectively. The inlet pipe is connected to the external cooling tower (cooling water temperature 20-25℃), and the outlet pipe is connected to the cooling water recovery tank; The discharge port is a funnel-shaped structure made of stainless steel (150mm in diameter at the top and 100mm in diameter at the bottom), fixed below the discharge end of the second conveying mechanism. The bottom can be connected to a hopper or directly docked with a transport vehicle.

[0007] Component connection relationship description All mechanisms are fixed to the frame with bolts or flanges to ensure no shaking during operation; electrical components (crushing drive, stirring drive, conveying drive, temperature controller, electric heating tube) are all connected to the electrical control box on one side of the frame with wires. The electrical control box is equipped with a main switch, independent switches for each mechanism, and an emergency stop button to achieve centralized control.

[0008] The workflow of this device follows the logic of "continuous preprocessing," and the specific steps are as follows: Feeding stage: The operator puts the recycled waste polystyrene foam (such as the packaging foam generated from the dismantling of waste household appliances in Yanjiang District, Ziyang City) into the feeding hopper, and the foam slides into the crushing box of the crushing mechanism along the "V" shaped guide plate; Crushing stage: Start the crushing drive unit, the reduction motor drives the two crushing rollers to rotate in opposite directions, the crushing teeth on the crushing rollers tear and squeeze the waste foam, crushing it into fragments with a particle size of 5-10mm, and the fragments fall from the bottom discharge port of the crushing box into the first conveying mechanism. First conveying stage: The conveying drive of the first conveying mechanism is activated, and the conveying blades of the screw conveyor push the debris along the conveying cylinder into the melting cylinder of the melting mechanism; by adjusting the speed of the conveying shaft, the amount of debris fed is controlled to match the melting speed (to avoid material accumulation in the melting cylinder). Melting stage: The heating element and temperature controller are activated. The heating element heats the melting cylinder, and the temperature controller stabilizes the temperature inside the cylinder at 160-180℃ (the optimal melting temperature for polystyrene to prevent decomposition due to excessive temperature). At the same time, the stirring drive is activated, and the stirring shaft drives the stirring blades to rotate, so that the debris comes into uniform contact with the cylinder wall and melts quickly into a melt. The melt flows to the bottom of the melting cylinder under the action of gravity, and after impurities are filtered through the stainless steel filter screen, it enters the second conveying mechanism. Cooling and Second Conveying Stage: The second conveying mechanism and cooling mechanism are activated. The external cooling tower introduces cooling water into the cooling chamber through the inlet pipe. The cooling water flows within the cooling chamber, absorbing heat from the conveying cylinder of the second conveying mechanism. After the melt enters the conveying cylinder of the second conveying mechanism, it is cooled to 60-80℃ and gradually solidifies into a high-density molten metal (density 1.05 g / cm³). 3 (Left and right), and moves towards the discharge port under the push of the conveyor blades; Discharge stage: The molten block is discharged from the discharge port and falls directly into the hopper of the transport vehicle or the workshop silo; the discharged molten block is cylindrical with a length of 5-10cm (matching the inner diameter of the conveyor cylinder), small in size and large in mass, which can be efficiently loaded and transported to the internal processing workshop of Ziyang Xichen Company for subsequent preparation of polystyrene particles.

[0009] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. An integrated crushing and melting treatment device for waste polystyrene foam, which integrates crushing, melting and cooling into the same frame, reduces the floor space by more than 40% compared with traditional separation equipment, and reduces the difficulty of workshop layout; 2. In this invention, the density of the output foam frit reaches 1.0-1.1 g / cm³. 3 The volume is reduced by more than 80% compared to the original waste foam, the loading capacity of transport vehicles is increased by 5-6 times, and the transportation cost is significantly reduced; 3. In this utility model, continuous feeding is achieved through a screw conveyor, the crushing roller speed is adjustable (50-100 r / min), the melting temperature is precisely controlled (160-180℃, suitable for polystyrene melting requirements), and it can process 1-1.2 tons of waste foam per hour, which is 30% more efficient than the separation process; 4. In this utility model, the various mechanisms are electrically connected to achieve synchronous control, requiring only 1-2 operators to complete feeding, monitoring and discharging, thus reducing labor costs; 5. This utility model can process waste polystyrene foam from different sources (such as packaging foam, household appliance foam, etc.), and removes impurities through a filter to ensure the purity of the raw materials for the subsequent preparation of polystyrene particles. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the structure of this utility model; Reference numerals: 1-Frame, 2-Feed hopper, 3-Discharge port, 4-Crushing roller, 5-Crushing drive component, 6-Crushing box, 7-Crushing teeth, 8-Melting cylinder, 9-Heating tube, 10-Thermostat, 11-Stirring shaft, 12-Stirring drive component, 13-Stirring blade, 14-Filter component, 15-Conveying cylinder, 16-Conveying shaft, 17-Conveying blade, 18-Conveying drive component, 19-Cooling jacket, 20-Water inlet pipe, 21-Water outlet pipe, 22-Cooling chamber, 23-Guide plate. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0012] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0013] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0014] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0015] I. Implementation Examples Example 1 This utility model relates to an integrated device for crushing and melting waste polystyrene foam, such as... Figure 1As shown, it includes a frame 1, a feed hopper 2, a crushing mechanism, a first conveying mechanism, a melting mechanism, a second conveying mechanism, a cooling mechanism, and a discharge port 3; The feed hopper 2, crushing mechanism, first conveying mechanism, melting mechanism, second conveying mechanism, cooling mechanism and discharge port 3 are all installed on the frame 1; The discharge end of the feed hopper 2 is correspondingly set to the feed end of the crushing mechanism. The discharge end of the crushing mechanism is fixedly connected to the feed end of the first conveying mechanism. The discharge end of the first conveying mechanism is fixedly connected to the feed port of the melting mechanism. The discharge end of the melting mechanism is fixedly connected to the feed end of the second conveying mechanism. The cooling mechanism is sleeved on the outside of the second conveying mechanism. The discharge end of the second conveying mechanism is fixedly connected to the discharge port 3.

[0016] The crushing mechanism includes two parallel crushing rollers 4, a crushing drive component 5, and a crushing box 6; The crushing box 6 is fixed on the frame 1. The top of the crushing box 6 is the feed end, and the bottom of the crushing box 6 is the discharge end. Two crushing rollers 4 are rotatably installed inside the crushing box 6, with the axes of the two crushing rollers 4 parallel and rotating in opposite directions; The crushing drive component 5 is fixed on the frame 1. The output end of the crushing drive component 5 is fixedly connected to one end of the crushing roller 4 to drive the crushing roller 4 to rotate. Several crushing teeth 7 are fixed on the outer peripheral wall of each crushing roller 4.

[0017] The melting mechanism includes a melting cylinder 8, an electric heating element 9, a temperature controller 10, and a stirring assembly; The melting cylinder 8 is fixed on the frame 1, with the top of the melting cylinder 8 serving as the feed inlet and the bottom of the melting cylinder 8 serving as the discharge outlet. The heating element 9 is embedded inside the wall of the melting cylinder 8, and the thermostat 10 is fixed on the outer wall of the melting cylinder 8. The thermostat 10 is electrically connected to the heating element 9 and is used to control the heating temperature of the heating element 9. The stirring assembly includes a stirring shaft 11 and a stirring drive 12. The stirring shaft 11 is rotatably installed inside the melting cylinder 8. Several stirring blades 13 are fixed on the outer peripheral wall of the stirring shaft 11. The stirring drive 12 is fixed to the top of the melting cylinder 8, and the output end of the stirring drive 12 is fixedly connected to the top end of the stirring shaft 11.

[0018] It also includes a filter element 14; the filter element 14 is fixed inside the discharge end of the melting cylinder 8, and the filter element 14 is a stainless steel filter screen with a pore size of 2-3mm.

[0019] Both the first and second conveying mechanisms are screw conveyors; the screw conveyor includes a conveying cylinder 15, a conveying shaft 16, conveying blades 17, and a conveying drive component 18; the conveying cylinder 15 is fixed on the frame 1, the conveying shaft 16 is rotatably installed inside the conveying cylinder 15, and the conveying blades 17 are helically fixed on the outer peripheral wall of the conveying shaft 16; the conveying drive component 18 is fixed at one end of the conveying cylinder 15, and the output end of the conveying drive component 18 is fixedly connected to one end of the conveying shaft 16.

[0020] The cooling mechanism includes a cooling jacket 19, an inlet pipe 20, and an outlet pipe 21. The cooling jacket 19 is fixedly sleeved on the outer wall of the conveying cylinder 15 of the second conveying mechanism, and a cooling cavity 22 is formed between the cooling jacket 19 and the outer wall of the conveying cylinder 15. One end of the inlet pipe 20 is connected to the bottom of the cooling cavity 22, and one end of the outlet pipe 21 is connected to the top of the cooling cavity 22. The other end of the inlet pipe 20 is used to connect to an external cooling water supply device, and the other end of the outlet pipe 21 is used to connect to an external cooling water recovery device.

[0021] The inside of the feed hopper 2 is fixed with two symmetrically arranged guide plates 23; the two guide plates 23 are distributed in a "V" shape, the top of the guide plates 23 are fixedly connected to the inner side wall of the feed hopper 2, and the bottom of the guide plates 23 extend inclinedly towards the feed end of the crushing mechanism.

[0022] The specific implementation method of this embodiment is as follows: processing the foam from the dismantling of waste household appliances in Yanjiang District, Ziyang City. (1) Processing object A waste polystyrene foam (mainly packaging foam for refrigerators and air conditioners) generated by a waste appliance dismantling plant in Yanjiang District, Ziyang City, has a single recycling volume of approximately 5 tons and an initial foam volume of approximately 25 cubic meters. 3 It contains a small amount of dust and impurities.

[0023] (2) Device parameter settings Crushing roller speed: 60 r / min; The rotational speed of the first conveying mechanism is 15 r / min. Melting chamber temperature: 170℃; Stirring shaft speed: 40 r / min; The rotational speed of the second conveying mechanism is 12 r / min. Cooling water temperature: 22℃.

[0024] (3) Treatment effect The device operated continuously for 4.5 hours, pre-treating 5 tons of waste foam and outputting approximately 4.8 tons of foam flocs (with an impurity removal rate of approximately 4%), with a total floc volume of approximately 4.6 m³. 3The volume is reduced by 81.6% compared to the original foam; the frit is transported by 3-ton trucks (load capacity 4.5 tons / truck), requiring only 2 trucks to reach Xichen Company's workshop, reducing the number of transport trips by 80% compared to the original foam transport (requiring more than 10 trucks), and reducing transportation costs by about 75%; when preparing polystyrene particles in the subsequent process, the frit melting efficiency is increased by 25% compared to the original fragments, and the particle purity reaches 99.2%, meeting product quality requirements.

[0025] Example 2 This utility model relates to an integrated device for crushing and melting waste polystyrene foam, such as... Figure 1 As shown, the specific implementation method of this embodiment is as follows: processing waste packaging foam in Lezhi County, Ziyang City. (1) Processing object A warehouse in Lezhi County, Ziyang City, generates approximately 3 tons of waste polystyrene packaging foam (mainly transport packaging for furniture and electronic products) from an e-commerce warehouse. The initial volume of the foam is approximately 15 cubic meters. 3 The impurity content is low (mainly tape residue).

[0026] (2) Device parameter settings Crushing roller speed: 55 r / min; The rotational speed of the first conveying mechanism is 12 r / min. Melting chamber temperature: 165℃; Stirring shaft speed: 35 r / min; The rotational speed of the second conveying mechanism is 10 r / min. Cooling water temperature: 20℃.

[0027] (3) Treatment effect The device operated continuously for 2.8 hours, pre-treating 3 tons of waste foam and outputting approximately 2.9 tons of foam floc (impurity removal rate of approximately 3.3%), with a total floc volume of approximately 2.8 m³. 3 The volume is reduced by 81.3% compared to the original foam; it can be transported by 2-ton trucks, and can be loaded in one truck (the original foam required 6 trucks), reducing the transportation time from 4 hours to 1 hour; there is no obvious tape residue when the molten block melts (impurities are filtered by the filter screen), and the yield of polystyrene particles reaches 98.5%, which meets Xichen Company's production standards.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. An integrated processing device for crushing and melting waste polystyrene foam, characterized in that, It includes a frame (1), a feed hopper (2), a crushing mechanism, a first conveying mechanism, a melting mechanism, a second conveying mechanism, a cooling mechanism, and a discharge port (3); The feeding hopper (2), crushing mechanism, first conveying mechanism, melting mechanism, second conveying mechanism, cooling mechanism and discharge port (3) are all installed on the frame (1); The discharge end of the feed hopper (2) is correspondingly provided with the feed end of the crushing mechanism. The discharge end of the crushing mechanism is fixedly connected with the feed end of the first conveying mechanism. The discharge end of the first conveying mechanism is fixedly connected with the feed port of the melting mechanism. The discharge end of the melting mechanism is fixedly connected with the feed end of the second conveying mechanism. The cooling mechanism is sleeved on the outside of the second conveying mechanism. The discharge end of the second conveying mechanism is fixedly connected with the discharge port (3).

2. The integrated waste polystyrene foam crushing and melting treatment device according to claim 1, characterized in that, The crushing mechanism includes two parallel crushing rollers (4), a crushing drive component (5), and a crushing box (6); The crushing box (6) is fixed on the frame (1), the top of the crushing box (6) is the feeding end, and the bottom of the crushing box (6) is the discharging end; The two crushing rollers (4) are rotatably installed inside the crushing box (6), and the axes of the two crushing rollers (4) are parallel and rotate in opposite directions; The crushing drive component (5) is fixed on the frame (1). The output end of the crushing drive component (5) is fixedly connected to one end of the crushing roller (4) to drive the crushing roller (4) to rotate. Several crushing teeth (7) are fixed on the outer peripheral wall of each crushing roller (4).

3. The integrated waste polystyrene foam crushing and melting treatment device according to claim 2, characterized in that, The melting mechanism includes a melting cylinder (8), an electric heating tube (9), a temperature controller (10), and a stirring assembly; The melting cylinder (8) is fixed on the frame (1), the top of the melting cylinder (8) is a feed inlet, and the bottom of the melting cylinder (8) is a discharge outlet; The heating element (9) is embedded inside the wall of the melting cylinder (8), and the temperature controller (10) is fixed on the outer wall of the melting cylinder (8). The temperature controller (10) is electrically connected to the heating element (9) and is used to control the heating temperature of the heating element (9). The stirring assembly includes a stirring shaft (11) and a stirring drive (12). The stirring shaft (11) is rotatably installed inside the melting cylinder (8). Several stirring blades (13) are fixed on the outer peripheral wall of the stirring shaft (11). The stirring drive (12) is fixed to the top of the melting cylinder (8). The output end of the stirring drive (12) is fixedly connected to the top end of the stirring shaft (11).

4. The integrated waste polystyrene foam crushing and melting treatment device according to claim 3, characterized in that, It also includes a filter element (14); the filter element (14) is fixed inside the discharge end of the melting cylinder (8), and the filter element (14) is a stainless steel filter screen with a pore size of 2-3 mm.

5. The integrated waste polystyrene foam crushing and melting treatment device according to claim 1, characterized in that, The first conveying mechanism and the second conveying mechanism are both screw conveyors; the screw conveyor includes a conveying cylinder (15), a conveying shaft (16), conveying blades (17) and a conveying drive (18); the conveying cylinder (15) is fixed on the frame (1), the conveying shaft (16) is rotatably installed inside the conveying cylinder (15), and the conveying blades (17) are helically fixed on the outer peripheral wall of the conveying shaft (16); the conveying drive (18) is fixed at one end of the conveying cylinder (15), and the output end of the conveying drive (18) is fixedly connected to one end of the conveying shaft (16).

6. The integrated waste polystyrene foam crushing and melting treatment device according to claim 5, characterized in that, The cooling mechanism includes a cooling sleeve (19), an inlet pipe (20), and an outlet pipe (21). The cooling sleeve (19) is fixedly sleeved on the outer wall of the conveying cylinder (15) of the second conveying mechanism, and a cooling cavity (22) is formed between the cooling sleeve (19) and the outer wall of the conveying cylinder (15). One end of the inlet pipe (20) is connected to the bottom of the cooling cavity (22), and one end of the outlet pipe (21) is connected to the top of the cooling cavity (22). The other end of the inlet pipe (20) is used to connect to an external cooling water supply device, and the other end of the outlet pipe (21) is used to connect to an external cooling water recovery device.

7. The integrated waste polystyrene foam crushing and melting treatment device according to claim 1, characterized in that, The feed hopper (2) has two symmetrically arranged guide plates (23) fixed inside; the two guide plates (23) are distributed in a "V" shape, the top of the guide plate (23) is fixedly connected to the inner side wall of the feed hopper (2), and the bottom of the guide plate (23) extends inclined towards the feed end of the crushing mechanism.

Images