A waste plastic crushing device capable of preventing foam debris from splashing

Abstract

The utility model discloses a kind of waste plastics crushing equipment of preventing foam debris splashing, it is related to waste plastics recycling equipment technical field, solve the problem that existing equipment breaks when foam debris is easy to splash;The equipment includes rack, crushing assembly, anti-splashing cover body and debris collection assembly;Crushing assembly is installed on rack, anti-splashing cover body is fixed on rack top and cover crushing assembly, cover body is equipped with the feed inlet with sealing cover;Debris collection assembly is communicated with cover body interior, and debris is collected by negative pressure adsorption.Crushing assembly contains driving motor, crushing shaft, crushing knife and protective net, and debris collection assembly contains negative pressure source, collection pipeline and the collection container with filter element and detachable end cap;The utility model realizes double anti-splashing by "closed blocking+active collection", structure is easy to implement, maintenance is convenient, and it is suitable for the process that waste foam is recycled and broken to prepare polystyrene particles.

Description

Technical Field

[0001] This utility model belongs to the technical field of waste plastic recycling equipment, and relates to a waste plastic crushing equipment that prevents foam debris from splashing. Background Technology

[0002] Waste plastic recycling requires processing waste foam (mainly polystyrene) into polystyrene granules through crushing, melting, and other processes.

[0003] In the existing production process, waste foam needs to be crushed after recycling. However, due to the extremely low density and light weight of foam, the following key problems exist in the crushing process: 1. When the crushing components rotate at high speed, they will generate airflow, which will cause the crushed foam debris to splash everywhere from the equipment feed port, machine body gaps and other locations, resulting in a large amount of debris scattered on the workshop floor and equipment surface, increasing the cleaning burden on operators; 2. The flying debris can be easily inhaled by operators or adhere to the surface of equipment transmission components (such as motors and bearings), affecting the normal operation of the equipment and posing safety hazards. 3. The splashed debris cannot be fully recycled, resulting in waste of polystyrene raw materials and reducing the utilization rate of waste foam.

[0004] Currently, general-purpose crushing equipment on the market is not designed with a special structure for the splashing characteristics of lightweight foam fragments. It only uses simple baffles to block the splashing, which has a poor anti-splashing effect. Although some equipment is equipped with a collection device, its connection with the crushing area is poor, and it cannot actively collect the fragments. Therefore, it still cannot meet the actual needs of "zero splashing and high recycling" for waste foam crushing. Therefore, in order to solve the above-mentioned technical problems, the technical solution of this application is proposed. Utility Model Content

[0005] The purpose of this utility model is to address the technical problems of foam debris easily splashing everywhere and low recycling efficiency during the crushing process of existing waste foam crushing equipment, and to provide a waste plastic crushing equipment that prevents foam debris from splashing, achieving dual anti-splashing through "closed blocking + active collection", ensuring a clean workshop environment and improving raw material utilization.

[0006] The technical solution adopted in this utility model is as follows: A waste plastic crushing device for preventing foam debris from splashing includes a frame, a crushing component, a splash guard, and a debris collection component. The crushing component is installed on the frame and is used to crush waste foam. The splash guard is fixedly installed on the top of the frame and covers the crushing component. The splash guard has an inlet for the waste foam to enter. The debris collection component is connected to the inside of the splash guard and is used to collect the foam debris generated during crushing inside the splash guard to prevent foam debris from splashing.

[0007] Furthermore, the splash guard includes a guard body and a sealing cover. The feed inlet is located at the top of the guard body, and the sealing cover is rotatably connected to the top of the guard body via a hinge. The sealing cover can be closed over the feed inlet, and the sealing cover is also equipped with a handle for gripping. Operators can quickly open / close the sealing cover using the handle, and close the sealing cover after feeding raw materials to prevent debris from splashing from the feed inlet.

[0008] Furthermore, a sealing gasket is provided on the side of the sealing cap facing the feed inlet. The sealing gasket fits against the edge of the feed inlet to achieve a seal when the sealing cap is closed. The sealing gasket is made of nitrile rubber or fluororubber and can fill the gap between the sealing cap and the feed inlet to prevent small debris from leaking out of the gap.

[0009] Furthermore, the crushing assembly includes a drive motor, a crushing shaft, and crushing blades. The drive motor is fixedly mounted on one side of the frame, the crushing shaft is rotatably mounted on the frame, and one end of the crushing shaft is connected to the output shaft of the drive motor via a coupling. The crushing blades are fixedly mounted on the crushing shaft at intervals along its axial direction. The drive motor drives the crushing shaft to rotate, and the crushing blades cut the foam at high speed. The structure is simple, and the crushing efficiency is adapted to the production rhythm.

[0010] Furthermore, the crushing assembly also includes a protective net, which is fixedly installed inside the splash guard and located between the crushing blades and the feed inlet. The protective net is used to prevent uncrushed waste foam from directly contacting the crushing blades and to block upward-splashing debris during the crushing process. The protective net is woven from iron or stainless steel wire with a mesh size of 8-10mm, which neither affects the falling of raw materials nor prevents debris from moving upward.

[0011] Furthermore, the debris collection assembly includes a negative pressure source, a collection pipe, and a collection container. One end of the collection pipe is connected to the bottom of the splash shield, and the other end is connected to the inlet of the collection container. The negative pressure source is installed on the collection pipe and is used to generate negative pressure within the collection pipe to draw foam debris from inside the splash shield into the collection container. A negative pressure fan is selected as the negative pressure source to actively adsorb debris through negative pressure, preventing debris from accumulating inside the shield.

[0012] Furthermore, a filter element is installed at the connection between the negative pressure source and the collection pipe. This filter element is used to filter foam debris and prevent it from entering the negative pressure source. The collection container is also equipped with a removable end cap, which is used to open the collection container to clean out the foam debris inside. The filter element uses a nylon filter screen (filtration accuracy 0.5-1mm) to protect the negative pressure source from debris interference. The removable end cap facilitates the transfer of debris to the subsequent polystyrene particle preparation process.

[0013] Working principle The working process of this waste plastic crushing equipment that prevents foam debris from splashing is as follows: Raw material input: The operator opens the sealing cover by the handle and puts the waste foam into the anti-splash cover through the feed port. The foam slowly falls into the crushing component through the protective net (to prevent large pieces of foam from hitting the crushing blades). After the input is completed, the sealing cover is closed and the sealing gasket fits into the feed port to achieve a seal.

[0014] Crushing operation: Start the drive motor and negative pressure source. The drive motor drives the crushing shaft to rotate through the coupling. The crushing blades cut the foam at high speed. Part of the generated debris is blocked by the protective net (preventing it from splashing upwards), while the other part moves towards the bottom of the hood under the action of gravity and negative pressure.

[0015] Debris collection: The negative pressure source creates a continuous negative pressure in the collection pipe, and the debris inside the enclosure is sucked into the collection container through the collection pipe; the filter element prevents debris from entering the negative pressure source, thus avoiding damage to the negative pressure source.

[0016] Debris transfer: When the debris in the collection container accumulates to the set amount, the equipment is shut down, the end cap is removed (or the debris is transferred to the subsequent polystyrene particle preparation process via a screw conveyor), completing one crushing-anti-splashing cycle.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. A waste plastic crushing device that prevents foam debris from splashing, which seals the crushing area with a splash-proof cover and actively adsorbs debris with a debris collection component, forming a dual protection of "physical blocking + negative pressure collection", which completely solves the problem of debris splashing. According to the test, the debris collection rate can reach more than 99%. 2. In this utility model, the protective net prevents large pieces of foam from directly impacting the high-speed crushing blade, reducing the risk of equipment failure; the sealing cover and sealing gasket are matched to different temperature environments in the workshop (such as high temperatures in summer) and meet the requirements for equipment sealing. 3. The design of the detachable collection container end cap and the cleanable filter element in this utility model is suitable for continuous production needs and reduces equipment downtime for maintenance; the equipment structure has no complex parts, and those skilled in the art can quickly master the operation method. Attached Figure Description

[0018] 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; Figure 2This is a schematic diagram showing the shape of the protective netting of this utility model and its installation position on the main body of the cover; Reference numerals: 1-Rack; 2-Crushing assembly, 21-Drive motor, 22-Crushing shaft, 23-Crushing blade, 24-Safety net; 3-Splash shield, 31-Shield body, 32-Sealing cover, 33-Inlet, 34-Handle, 35-Sealing gasket; 4-Debris collection assembly, 41-Negative pressure source, 42-Collection pipe, 43-Collection container, 44-Filter element, 45-End cap. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0023] I. Implementation Examples Example 1 This utility model relates to a waste plastic crushing device that prevents foam debris from splashing, such as... Figure 1 , Figure 2 As shown, it includes a frame 1, a crushing assembly 2, a splash guard 3, and a debris collection assembly 4; The crushing component 2 is installed on the frame 1 and is used to crush waste foam; The splash guard 3 is fixedly installed on the top of the frame 1, and the splash guard 3 covers the crushing component 2. The splash guard 3 has a feed port 33 for waste foam to enter. The debris collection component 4 is connected to the interior of the splash shield 3 and is used to collect foam debris generated inside the splash shield 3 to prevent foam debris from splashing.

[0024] The splash guard 3 includes a guard body 31 and a sealing cover 32. The feed inlet 33 is located on the top of the guard body 31. The sealing cover 32 is rotatably connected to the top of the guard body 31 via a hinge, and the sealing cover 32 can close onto the feed inlet 33. The sealing cover 32 is also provided with a handle 34 for holding.

[0025] A sealing gasket 35 is provided on the side of the sealing cover 32 facing the feed inlet 33. The sealing gasket 35 fits against the edge of the feed inlet 33 to achieve a seal when the sealing cover 32 is closed.

[0026] The crushing assembly 2 includes a drive motor 21, a crushing shaft 22, and crushing blades 23. The drive motor 21 is fixedly installed on one side of the frame 1, the crushing shaft 22 is rotatably installed on the frame 1, and one end of the crushing shaft 22 is connected to the output shaft of the drive motor 21 through a coupling. The crushing blades 23 are fixedly installed on the crushing shaft 22 at intervals along the axial direction of the crushing shaft 22.

[0027] The crushing assembly 2 also includes a protective net 24, which is fixedly installed inside the anti-splash cover 3 and is located between the crushing blade 23 and the feed inlet 33. The protective net 24 is used to prevent uncrushed waste foam from directly contacting the crushing blade 23 and to block the debris that splashes upward during the crushing process.

[0028] The debris collection assembly 4 includes a negative pressure source 41, a collection pipe 42, and a collection container 43. One end of the collection pipe 42 is connected to the bottom of the splash shield 3, and the other end of the collection pipe 42 is connected to the inlet of the collection container 43. The negative pressure source 41 is installed on the collection pipe 42 and is used to generate negative pressure in the collection pipe 42 to draw foam debris in the splash shield 3 into the collection container 43.

[0029] A filter element 44 is provided at the connection between the negative pressure source 41 and the collection pipe 42. The filter element 44 is used to filter foam debris and prevent foam debris from entering the interior of the negative pressure source 41. The collection container 43 is also provided with a detachable end cap 45, which is used to open the collection container 43 to clean the foam debris inside.

[0030] The specific implementation method of this embodiment is as follows: applying small recycling stations in Yanjiang District, Ziyang. Application scenario: A small-scale waste foam recycling station in Yanjiang District, Ziyang City, mainly processing waste foam from surrounding residents and small businesses, with a daily processing capacity of about 500 kg. The equipment needs to be compact and mobile.

[0031] Equipment parameters: The frame is made of welded stainless steel square tubing and has casters with brakes installed at the bottom for easy movement within the site. Crushing components: The drive motor is a 3kW three-phase asynchronous motor, the crushing shaft is 600mm long, and the crushing blades are made of manganese steel (4 blades, spaced 100mm apart). Splash shield: The shield body is made of 3mm stainless steel plate (dimensions 800mm×600mm×500mm), the feed port is 300mm×200mm, the sealing cover is equipped with nitrile rubber sealing gasket (thickness 5mm), and the protective mesh is made of woven iron wire (mesh size 10mm×10mm). Debris collection assembly: The negative pressure source is a 1.5kW small negative pressure fan, the collection pipe is a Φ100mm PVC pipe, and the collection container is made of 50LPE material (with a detachable plastic end cap and nylon filter).

[0032] Results: Operators use casters to move the equipment and clean the collection container every 2 hours. The debris is directly packed into sealed bags and transported to the Ziyang High-tech Zone production base. There is no debris splashing in the workshop during the crushing process, the cleaning burden is reduced by 80%, and the raw material waste rate is reduced from 15% to less than 1%.

[0033] Example 2 This utility model relates to a waste plastic crushing device that prevents foam debris from splashing, such as... Figure 1 , Figure 2 As shown, the specific implementation method of this embodiment is as follows: Utilizing the Ziyang High-tech Zone production base... Application scenario: A polystyrene particle production base in Ziyang High-tech Zone processes 5,000 kg of waste foam per day. The equipment needs to be linked with the subsequent production line to achieve continuous conveying of the debris.

[0034] Equipment parameters: Frame: Heavy-duty steel structure, fixed to the workshop floor with expansion bolts to ensure stable operation; Crushing assembly: The drive motor is an 11kW variable frequency motor (adjustable speed), the crushing shaft is 1200mm long, the crushing blades are made of alloy tool steel (12 blades, spaced 80mm apart), and the outer side is equipped with a crushing chamber that is connected to the cover; Splash shield: The shield body is made of 5mm steel plate (1500mm×1000mm×800mm), the feed inlet is 500mm×300mm, the sealing cover is hydraulically driven to open, the sealing gasket is fluororubber (suitable for summer workshop temperature of 35℃), and the protective net is stainless steel wire mesh (8mm×8mm mesh). Debris collection system: The negative pressure source is a 7.5kW industrial-grade negative pressure fan; the collection pipe is a Φ200mm stainless steel pipe (connected to the main negative pressure pipeline in the workshop); the collection container is 5m... 3 Collection box (with metal filter screen and screw conveyor, the conveyor outlet is connected to the feed hopper of the subsequent pellet production line).

[0035] Results: Raw materials are fed in through an automatic feeding device, and the debris is conveyed to the collection box under negative pressure. The screw conveyor continuously feeds the debris into the subsequent processes. The metal filter screen is cleaned once a week, and the equipment runs continuously without failure. The problem of debris splashing in the workshop is completely solved, and the production efficiency is increased by 30%, meeting the needs of continuous production in the base.

[0036] 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. A waste plastic crushing device that prevents foam debris from splashing, characterized in that, It includes a frame (1), a crushing assembly (2), a splash guard (3), and a debris collection assembly (4); The crushing component (2) is installed on the frame (1) and is used to crush waste foam; The splash guard (3) is fixedly installed on the top of the frame (1) and covers the crushing component (2). The splash guard (3) has an inlet (33) for waste foam to enter. The debris collection component (4) is connected to the interior of the splash shield (3) and is used to collect the foam debris generated inside the splash shield (3) to prevent foam debris from splashing.

2. The waste plastic crushing equipment for preventing foam debris splashing according to claim 1, characterized in that, The splash guard (3) includes a guard body (31) and a sealing cover (32). The feed inlet (33) is located on the top of the guard body (31). The sealing cover (32) is rotatably connected to the top of the guard body (31) by a hinge, and the sealing cover (32) can cover the feed inlet (33). The sealing cover (32) is also provided with a handle (34) for holding.

3. The waste plastic crushing equipment for preventing foam debris splashing according to claim 2, characterized in that, The sealing cover (32) has a sealing gasket (35) on the side facing the feed inlet (33). The sealing gasket (35) fits against the edge of the feed inlet (33) to achieve a seal when the sealing cover (32) is closed.

4. The waste plastic crushing equipment for preventing foam debris splashing according to claim 1, characterized in that, The crushing assembly (2) includes a drive motor (21), a crushing shaft (22), and a crushing blade (23). The drive motor (21) is fixedly installed on one side of the frame (1). The crushing shaft (22) is rotatably installed on the frame (1), and one end of the crushing shaft (22) is connected to the output shaft of the drive motor (21) through a coupling. The crushing blade (23) is fixedly installed on the crushing shaft (22) at intervals along the axial direction of the crushing shaft (22).

5. The waste plastic crushing equipment for preventing foam debris splashing according to claim 4, characterized in that, The crushing assembly (2) also includes a protective net (24), which is fixedly installed inside the anti-splash cover (3) and is located between the crushing blade (23) and the feed inlet (33). The protective net (24) is used to prevent uncrushed waste foam from directly contacting the crushing blade (23) and to block the debris that splashes upward during the crushing process.

6. The waste plastic crushing equipment for preventing foam debris splashing according to claim 1, characterized in that, The debris collection assembly (4) includes a negative pressure source (41), a collection pipe (42), and a collection container (43). One end of the collection pipe (42) is connected to the bottom of the splash shield (3), and the other end of the collection pipe (42) is connected to the inlet of the collection container (43). The negative pressure source (41) is installed on the collection pipe (42) and is used to generate negative pressure in the collection pipe (42) to draw foam debris in the splash shield (3) into the collection container (43).

7. A waste plastic crushing device for preventing foam debris splashing according to claim 6, characterized in that, A filter element (44) is provided at the connection between the negative pressure source (41) and the collection pipe (42). The filter element (44) is used to filter foam debris and prevent foam debris from entering the interior of the negative pressure source (41). The collection container (43) is also provided with a detachable end cap (45). The end cap (45) is used to open the collection container (43) to clean the foam debris inside.

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