Waste plastic recovery device

Abstract

The utility model belongs to the technical field of plastic recovery, and discloses a waste plastic recovery device. In order to solve the problems that existing crushing equipment cannot be connected to a production line, the automation degree is low, the crushing granularity is uneven and the like, the device comprises a case, a crushing cutter group, a driving box, a controller, a box cover, a guide roller, a transport trolley and the like. An operation opening and an operation window are arranged on the case, a guide roller and a tensioning roller are arranged on the case cover through an L-shaped bracket, and the tensioning roller tightens a film bag sample and introduces the film bag sample into the crushing cutter group through the guide roller. A proximity switch is arranged on the lower end face of the box cover, a storage tank and a laser sensor component are arranged on the machine box, and the controller forms interlocking control through the proximity switch and the laser sensor to achieve automatic crushing treatment. And a material baffle and a material distributing plate are arranged in the case, so that crushed materials can be conveniently collected. According to the device, the combined design of the guide rollers and the tensioning rollers is added, so that seamless butt joint from a production line to a crushing link is facilitated, the crushing granularity can be ensured, the recovery efficiency and quality are improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic recycling, and in particular relates to a waste plastic recycling device. Background Art

[0002] In today's society, plastic products are widely used in various fields of production and daily life due to their lightness, durability and low cost. A large amount of discarded plastics are difficult to decompose in the natural environment and gradually accumulate, causing serious pollution to the ecological environment in many aspects. These plastic wastes not only pollute the soil and water sources, but also enter the body through the food chain, affecting the ecological balance and human health. Therefore, biodegradable materials have become the main means to solve the problem of plastic pollution from the source.

[0003] However, in actual production, in order to debug the operation of the entire production line equipment and adjust the equipment parameters according to customer customization requirements, we usually produce some trial products to test the equipment. After these discarded plastic products are initially crushed by the crushing equipment, they are sorted, cleaned, melted and reshaped into recycled plastic products. However, since the existing crushing equipment is separated from the production line design, it cannot be connected to the production line to achieve automated crushing processing. Additional manual intervention is required in the crushing process, which leads to low crushing efficiency and increased labor costs. In addition, some existing crushing equipment has obvious deficiencies in the crushing link. When the products are put into the crushing equipment, they are lumped together, making it impossible to accurately control the crushing particle size. Uneven crushing particle size will directly affect the effect of the subsequent recycling process. For example, in the preparation process of recycled plastic particles, inconsistent particle size may lead to unstable product quality and reduce the performance and market value of recycled plastics.

[0004] In view of the many problems existing in the above-mentioned traditional waste plastic recycling methods and crushing equipment, there is an urgent need to design a new type of crushing equipment based on the production line, which can be seamlessly connected to the production line, realize automated crushing processing, ensure crushing particle size, and help improve the quality and market value of recycled plastics. Utility Model Content

[0005] In view of the problems existing in the background technology, the utility model provides a waste plastic recycling device that can be seamlessly connected to the production line, realize automated crushing processing, and accurately control the crushing particle size, so as to improve the overall efficiency and quality of waste plastic recycling and reduce recycling costs.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a waste plastic recycling device, including a machine box and a crushing knife group, the crushing knife group includes two rotating shafts, and each rotating shaft is axially arranged with multiple groups of blades, the two rotating shafts are respectively rotatably arranged in the machine box, and the two are driven by gear meshing, and a driving box is installed on one side of the machine box, the driving box includes a dust cover, a pulley transmission mechanism, a motor and a matching driver, the output shaft of the motor is connected to one of the rotating shafts through the pulley transmission mechanism, a controller is installed on the machine box, and the controller is electrically connected to the motor driver of the driving box, a box cover is provided on the machine box, a pair of guide rollers are installed on the box cover through an L-shaped bracket, and the box cover is located directly above the crushing knife group, the film bag sample passes through between the guide rollers and is introduced into the crushing knife group to be crushed into small sections, and a transport trolley is provided in the machine box located directly below the crushing knife group for collecting the crushed film bag samples.

[0007] As a further supplementary explanation of the above technical solution, an operation opening is opened on the chassis, and an operation window corresponding to the operation opening is rotatably arranged on the chassis, and the operation window can open or close the operation opening by rotating.

[0008] As a further supplement to the above technical solution, an L-shaped bracket is installed on the box cover, and the L-shaped bracket is located on one side of the guide roller, and a tensioning roller is installed thereon. The tensioning roller includes multiple groups, and the film bag sample is in a tensioned state by passing through multiple tensioning rollers through S-shaped movement before entering the guide roller.

[0009] As a further supplement to the above technical solution, a proximity switch is installed on the lower end surface of the box cover through an L-shaped bracket. The proximity switch is located on the other side of the guide roller. The signal output end of the proximity switch is connected to the controller. The controller controls the automatic stop of the driving box motor through the membrane bag sample signal collected by the proximity switch.

[0010] As a further supplement to the above technical solution, a material storage tank is provided on the chassis and is located below the tensioning roller. The material storage tank is used to temporarily store the film bag samples transported after the crushing knife group stops rotating.

[0011] As a further explanation and limitation of the above technical solution, a laser transmitter and a laser receiver are installed opposite to each other on the inner wall of the storage tank, and the signal output end of the laser receiver is connected to the controller. The controller controls the speed of the driving box motor through the membrane bag sample signal collected by the laser receiver.

[0012] As a further supplement to the above technical solution, a laser transmitter and a laser receiver are installed opposite to each other inside the chassis, and the installation positions of the two are higher than the transport cart. The signal output end of the laser receiver is connected to the controller, and the controller controls the automatic stop of the drive box motor through the film bag crushing material signal collected by the laser receiver.

[0013] As a further supplementary explanation of the above technical solution, two material baffles are arranged inside the chassis, and the two material baffles are located directly below the crushing knife group and are arranged in an inverted figure eight shape.

[0014] As a further explanation and limitation of the above technical solution, a dividing plate is arranged inside the chassis, and both ends of the dividing plate are bent downward and leave a gap with the side wall of the chassis.

[0015] As a further explanation and limitation of the above technical solution, leakage holes are evenly opened on the material dividing plate, and the leakage holes facilitate the even spreading of the small segments produced by the crushing into the transport vehicle.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The utility model adds a combination of guide rollers and tension rollers to the chassis, allowing the film bag samples coming out of the production line to enter the crushing knife group accurately through the guide rollers for crushing, while the tension rollers ensure that the film bag samples remain in an ideal state before entering to prevent entanglement. The two work together to achieve seamless connection from the production line to the crushing link, greatly improving the degree of automation and significantly reducing labor costs. At the same time, the stable feeding method ensures that the crushing knife group evenly crushes the film bag samples, effectively controls the crushing particle size, and makes the particle size of the crushed material consistent, which effectively guarantees the quality stability of recycled plastics and enhances their market competitiveness.

[0018] 2. The utility model is equipped with a proximity switch, a laser transmitter 1 and a laser receiver 1, a laser transmitter 2 and a laser receiver 2. The proximity switch monitors the position of the membrane bag sample in real time, and cooperates with the controller to accurately control the start and stop of the motor to avoid motor idling and improve energy utilization. Laser transmitter 1 and laser receiver 1 monitor the sample surplus in the storage tank, laser transmitter 2 and laser receiver 2 monitor the loading situation of the transport cart, and the controller intelligently adjusts the motor speed and operating status according to the received signal. These components work together to greatly improve the automation level of the device, realize the intelligent operation of the equipment, effectively protect the equipment from damage under abnormal working conditions, extend the service life of the equipment, reduce the maintenance cost of the equipment, and ensure the long-term stable and efficient operation of the equipment.

[0019] 3. The utility model is provided with a baffle plate and a separator plate inside the chassis. The baffle plate is arranged in an inverted figure eight shape, so that the broken film bag samples can be concentrated and converged. The two ends of the separator plate are bent downward and the side walls are left empty, which guides the materials to flow evenly into the transport trolley on both sides and further distribute them evenly in the trolley. The holes on the separator plate promote the uniform scattering of small pieces of materials. These designs make full use of the space of the transport trolley, increase the loading capacity, prevent material overflow and accumulation, create good conditions for subsequent recycling and processing, and significantly improve the recycling efficiency of the entire waste plastic recycling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0021] Figure 2 A cross-sectional structural diagram of a chassis according to an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of placing film bag samples according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the material storage tank in an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the material dividing plate according to an embodiment of the utility model.

[0025] In the figure: 1. Chassis; 101. Operation port; 102. Operation window; 2. Crushing knife group; 3. Drive box; 4. Controller; 5. Box cover; 6. L-shaped bracket; 7. Guide roller; 8. Transport trolley; 9. Tensioning roller; 10. Proximity switch; 11. Material storage tank; 12. Laser transmitter 1; 13. Laser receiver 1; 14. Laser transmitter 2; 15. Laser receiver 2; 16. Material baffle plate; 17. Material dividing plate; 18. Leakage hole. DETAILED DESCRIPTION

[0026] In order to further illustrate the technical solution of the utility model, the following Figures 1 to 5 , the utility model is further described in detail through four embodiments.

[0027] As attached Figures 1 to 2 As shown, the existing crushing equipment includes a chassis 1 and a crushing blade group 2, a case cover 5 is provided on the chassis 1, a drive box 3 is installed on one side of the chassis 1, a controller 4 is installed on the chassis 1, and the controller 4 is electrically connected to the motor driver of the drive box 3. Among them, the crushing blade group 2 includes two rotating shafts, and each rotating shaft is axially provided with multiple groups of blades, and the two rotating shafts are respectively rotatably arranged in the chassis 1, and the two are driven by gear meshing. The drive box 3 includes a dust cover, a pulley transmission mechanism, a motor and a matching driver, and the output shaft of the motor is connected to one of the rotating shafts through a pulley transmission mechanism. Embodiment 1

[0028] As attached Figures 2 to 4 As shown, a waste plastic recycling device is modified as follows based on the existing crushing equipment structure: a pair of guide rollers 7 are installed on the box cover 5 through an L-shaped bracket 6, and are located directly above the crushing knife group 2. An operation port 101 is opened on the chassis 1, and an operation window 102 corresponding to the operation port 101 is rotatably provided on the chassis 1. The operation window 102 can open or close the operation port 101 by rotation. Before use, open the operation window 102, manually pass the film bag sample through the guide rollers 7 and introduce it into the crushing knife group 2 to be crushed into small sections. A transport trolley 8 is provided in the chassis 1 directly below the crushing knife group 2 to collect the crushed film bag samples. The operation window design can prevent external debris from entering the chassis to a certain extent, affecting the normal operation of the equipment, and can also ensure the safety of the operator. Embodiment 2

[0029] On the basis of Example 1, in order to prevent the film bag samples from getting entangled before entering the crushing knife group, thereby affecting the crushing particle size. Figure 3 As shown, we installed an L-shaped bracket 6 on the box cover 5, and the L-shaped bracket 6 is located on one side of the guide roller 7. Multiple sets of tension rollers 9 are installed on the L-shaped bracket 6. Before the film bag sample enters the guide roller 7, it needs to pass through these tension rollers 9 in an S-shaped movement, so that the film bag sample is always in a taut state during the entire transmission process, effectively avoiding the occurrence of winding. At the same time, a proximity switch 10 is installed on the lower end surface of the box cover 5 through the L-shaped bracket 6, and the proximity switch 10 is located on the other side of the guide roller 7. The signal output end of the proximity switch 10 is connected to the controller 4. Its working principle is that when the film bag sample approaches the proximity switch 10, the proximity switch 10 transmits the signal collected from the film bag sample to the controller 4, and the controller 4 sends a running instruction to the drive box 3 to drive the crushing knife group 2 to crush the film bag sample; when the film bag sample is transported, the proximity switch 10 cannot collect the signal of the film bag sample, and the controller 4 sends a stop instruction to the drive box 3 according to the feedback signal. Such a design can realize the precise control of the film bag sample transportation, avoid the occurrence of motor idling and other situations, and improve the automation degree and energy utilization efficiency of the equipment.

[0030] In addition, in this embodiment, the tension roller 9 and the proximity switch 10 work in conjunction with other components. When the film bag sample is kept in a taut state under the action of the tension roller 9 and is transmitted to the guide roller 7, the proximity switch 10 monitors the position of the film bag sample in real time. Once the film bag sample stops being transported or an abnormal situation occurs, the proximity switch 10 promptly feeds back a signal to the controller 4, and the controller 4 quickly controls the motor of the drive box 3 to stop running, thereby protecting the equipment and preventing equipment damage or safety accidents that may be caused by the continuous operation of the motor. Embodiment 3

[0031] In order to avoid the accumulation of membrane bag samples outside the equipment or causing blockage. Figure 4 As shown, we have set a storage tank 11 on the chassis 1, and the storage tank 11 is located below the tension roller 9. Its main function is to temporarily store the film bag samples delivered after the crushing knife group 2 stops. In the actual production process, various situations may occur that cause the crushing knife group 2 to temporarily stop operating. For example, when the transport trolley 8 is fully loaded and needs to be replaced, the conveyor belt of the production line may still continue to transport the film bag samples. These film bag samples will fall into the storage tank 11 for temporary storage.

[0032] At the same time, a laser transmitter 12 and a laser receiver 13 are installed opposite to each other on the inner wall of the storage tank 11, and the signal output end of the laser receiver 13 is connected to the controller 4. The laser transmitter 12 emits the laser, and the laser receiver 13 receives the laser. When a film bag sample falls into the storage tank 11 and blocks the laser, the laser receiver 13 collects the film bag sample signal and transmits it to the controller 4. The controller 4 controls the motor speed of the drive box 3 according to the signal. When there are many film bag samples in the storage tank 11, the controller 4 can appropriately increase the motor speed and speed up the crushing process to process the film bag samples in the storage tank 11 as soon as possible; when there are few film bag samples in the storage tank 11, the controller 4 can adjust the motor speed to a normal level to ensure the stable operation of the equipment. Embodiment 4

[0033] In order to automatically detect the load of the transport trolley. Figure 5 As shown, we install a laser transmitter 2 14 and a laser receiver 2 15 opposite to each other inside the chassis 1, and the installation positions of the two are higher than the transport trolley 8. The signal output end of the laser receiver 2 15 is connected to the controller 4. Its working principle is that the laser transmitter 2 14 emits laser, and the laser receiver 2 15 receives laser. When the film bag crushed materials in the transport trolley 8 accumulate to a certain height and block the laser, the laser receiver 2 15 collects the signal that the film bag crushed materials fill the transport trolley 8 and transmits it to the controller 4. The controller 4 controls the motor of the drive box 3 to stop running. At this time, the on-site personnel can replace the transport trolley 8 in time.

[0034] Two baffle plates 16 are provided inside the chassis 1. The two baffle plates 16 are located directly below the crushing blade group 2 and are arranged in an inverted figure eight shape. The crushed film bag samples are gathered to the middle along the baffle plates 16 under the action of gravity, and then flow on the dividing plate 17 provided inside the chassis 1. The two ends of the dividing plate 17 are bent downward and leave a gap with the side wall of the chassis 1, so that the crushed film bag samples as a whole flow to both sides along the dividing plate 17 and fall into the transport trolley 8, and flow from both sides to the middle in the transport trolley 8, so that the crushed film bag samples can be more evenly distributed in the transport trolley 8. At the same time, leakage holes 18 are evenly opened on the dividing plate 17, and the small segments produced by partial crushing are evenly spread from the leakage holes 18 to the transport trolley 8, further improving the uniformity of the crushed materials in the transport trolley 8.

[0035] The synergistic effect of these detection and material distribution components has a significant effect on improving the loading capacity and recycling efficiency of the transport trolley 8. Through the precise detection of the laser transmitter 14 and the laser receiver 15, the transport trolley 8 can be replaced in time, avoiding the overflow of crushed materials or equipment blockage caused by the full load of the transport trolley 8, thereby ensuring the continuous operation of the equipment. The design of the baffle plate 16 and the material distribution plate 17 enables the crushed film bag samples to be more evenly distributed in the transport trolley 8, making full use of the space of the transport trolley 8 and increasing the loading capacity of the transport trolley 8. At the same time, the evenly distributed crushed materials are also conducive to the subsequent recycling process, improving the recycling efficiency of the entire waste plastic recycling device.

[0036] Its specific working method:

[0037] The on-site personnel pass the film bag samples coming out of the production line conveyor belt through the tension roller 9 in sequence through the S-shaped movement, and then pass through the two guide rollers 7 to introduce them into the crushing knife group 2. At this time, the controller 4 collects the signal of the film bag sample through the proximity switch 10, controls the motor of the drive box 3 to start working, drives the crushing knife group 2 to rotate, and crushes the film bag sample. The small segments produced after crushing are collected on the dividing plate 17 along the baffle plate 16, and then flow to both sides along the slope of the dividing plate 17, fall into the transport trolley 8, and then flow from both sides of the transport trolley 8 to the middle. The leak hole 18 can make some of the small segments produced after crushing fall into the transport trolley 8.

[0038] After the controller 4 collects the signal that the transport trolley 8 is full of the film bag crushing material through the cooperation of the laser transmitter 14 and the laser receiver 15, it controls the motor of the drive box 3 to stop running. At this time, the on-site personnel need to replace the transport trolley 8. At the same time, due to the continuous operation of the conveyor belt of the production line, the transported film bag samples will fall into the storage tank 11. When the transport trolley 8 is replaced, the controller 4 will receive the new signal collected by the laser receiver 15 and start the motor of the drive box 3 again. At the same time, the controller 4 collects the signal of the film bag sample through the cooperation of the laser transmitter 12 and the laser receiver 13 to adjust the motor power to speed up the crushing process, until the controller 4 can no longer collect the signal of the film bag sample through the laser transmitter 12 and the laser receiver 13, the controller 4 controls the motor of the drive box 3 to resume normal speed. When the controller 4 receives the signal that the proximity switch 10 cannot collect the film bag sample, it controls the motor of the drive box 3 to stop running.

[0039] The above shows and describes the main features and advantages of the utility model. For those skilled in the art, it is obvious that the specific implementation of the utility model is not limited to the details of the above exemplary embodiments, and the creative ideas and design ideas of the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model, which should be equivalent to the protection scope disclosed in the technical solution of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A waste plastic recycling device, comprising a housing (1) and a crushing blade group (2), wherein the crushing blade group (2) comprises two rotating shafts, and each rotating shaft is provided with a plurality of blades along the axial direction, the two rotating shafts are respectively rotatably arranged in the housing (1), and the two are driven by gear meshing, a drive box (3) is installed on one side of the housing (1), the drive box (3) comprises a dust cover, a pulley transmission mechanism, a motor and a matching driver, the output shaft of the motor is connected to one of the rotating shafts through the pulley transmission mechanism, a controller (4) is installed on the housing (1), and the controller (4) is electrically connected to the motor driver of the drive box (3), characterized in that: A box cover (5) is provided on the box cover (1), and a pair of guide rollers (7) are installed on the box cover (5) through an L-shaped bracket (6), and the guide rollers (7) are located directly above the crushing knife group (2). The film bag sample passes through between the guide rollers (7) and is introduced into the crushing knife group (2) to be crushed into small sections. A transport trolley (8) is provided in the box (1) directly below the crushing knife group (2) for collecting the crushed film bag samples.

2. A waste plastic recycling device according to claim 1, characterized in that: An operating opening (101) is provided on the chassis (1), and an operating window (102) corresponding to the operating opening (101) is rotatably provided on the chassis (1), wherein the operating window (102) can open or close the operating opening (101) by rotating.

3. The waste plastic recycling device according to claim 1, characterized in that: An L-shaped bracket (6) is installed on the box cover (5). The L-shaped bracket (6) is located on one side of the guide roller (7) and has a tensioning roller (9) installed thereon. The tensioning roller (9) includes multiple groups. Before entering the guide roller (7), the film bag sample passes through multiple tensioning rollers (9) in an S-shaped movement to put it in a taut state.

4. A waste plastic recycling device according to claim 3, characterized in that: A proximity switch (10) is installed on the lower end surface of the box cover (5) via an L-shaped bracket (6). The proximity switch (10) is located on the other side of the guide roller (7). The signal output end of the proximity switch (10) is connected to the controller (4). The controller (4) controls the automatic stop of the motor of the drive box (3) through the membrane bag sample signal collected by the proximity switch (10).

5. A waste plastic recycling device according to any one of claims 1 to 4, characterized in that: A material storage tank (11) is provided on the chassis (1) and is located below the tensioning roller (9). The material storage tank (11) is used to temporarily store film bag samples delivered after the crushing knife group (2) stops rotating.

6. A waste plastic recycling device according to claim 5, characterized in that: A laser transmitter (12) and a laser receiver (13) are respectively installed opposite to each other on the inner wall of the storage tank (11); a signal output end of the laser receiver (13) is connected to a controller (4); and the controller (4) controls the rotation speed of the motor of the driving box (3) through the membrane bag sample signal collected by the laser receiver (13).

7. A waste plastic recycling device according to claim 6, characterized in that: A second laser transmitter (14) and a second laser receiver (15) are installed opposite to each other inside the chassis (1), and the installation positions of the two are higher than the transport trolley (8). The signal output end of the second laser receiver (15) is connected to the controller (4), and the controller (4) controls the automatic stop of the motor of the drive box (3) through the film bag crushing material signal collected by the second laser receiver (15).

8. A waste plastic recycling device according to any one of claims 1 to 4 or any one of claims 6 to 7, characterized in that: Two material baffle plates (18) are arranged inside the chassis (1), and the two material baffle plates (18) are located directly below the crushing knife group (2) and are arranged in an inverted figure eight shape.

9. The waste plastic recycling device according to claim 8, characterized in that: A material dividing plate (16) is arranged inside the chassis (1), and both ends of the material dividing plate (16) are bent downwards and leave a gap with the side wall of the chassis (1).

10. The waste plastic recycling device according to claim 9, characterized in that: Leakage holes (17) are evenly formed on the material distribution plate (16), and the leakage holes (17) facilitate even spreading of the small segments produced by crushing into the transport trolley (8).

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