Metal separation device for plastic pellet production

Abstract

The utility model discloses a metal separation device for plastic granule production, concretely relates to the technical field of plastic granule production, and includes the base, is provided with the electromagnetic separation mechanism on the base, and the electromagnetic separation mechanism includes the electromagnetic separation box, is used for detecting and separating the metal impurity in the plastic particle, and the output of electromagnetic separation box is provided with the separating tube, is provided with the winnowing mechanism on the base, and the winnowing mechanism includes the winnowing box, and the input of winnowing box is linked with the separating tube output end intercommunication, is provided with the fan on the winnowing box, and the output of fan is located below the separating tube output end. The utility model discloses through setting winnowing mechanism, utilizes the principle that the density of metal impurity is greater than the plastic particle, to be able to in the winnowing box to the metal impurity that has been primarily screened by electromagnetic separation box further purifies and separates, effectively improves the separation precision of this metal separation device.

Description

Technical Field

[0001] This utility model relates to the field of plastic granule production technology, and more specifically, to a metal separation device for plastic granule production. Background Technology

[0002] Plastic granules are granular materials produced by processing various high-molecular polymers (such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, etc.) into granular form through specific manufacturing processes. These granules typically have uniform particle size and shape, facilitating storage, transportation, and further processing into various plastic products. They are mainly used in everyday consumer goods, packaging materials, and building materials.

[0003] In actual production, many plastic products use recycled plastics. These recycled plastics come from diverse sources and may contain various metal impurities, such as metal bottle caps and labels left on waste plastic bottles, or nails and wires mixed in during the recycling process. Therefore, after the recycled materials undergo preliminary processing such as crushing and washing, metal separation devices are usually used to separate the metal impurities to avoid problems such as wear and blockage of equipment by metals during subsequent processing, which would affect production efficiency and product quality.

[0004] Existing metal separation devices typically use electromagnetic induction to identify metal impurities from plastic granules. Inside the metal separator are three sets of coils: a central transmitting coil and two symmetrical receiving coils. An oscillator generates a high-frequency variable magnetic field through the central transmitting coil. When there are no metal impurities, the induced voltages in the two receiving coils cancel each other out, achieving equilibrium. Once metal impurities enter the magnetic field area, ferromagnetic metals affect the distribution of magnetic field lines, altering the magnetic flux within a fixed range; non-ferromagnetic metals generate eddy currents, changing the magnetic field distribution and disrupting the equilibrium. The induced voltages in the two receiving coils can no longer cancel each other out. The control system amplifies the uncancelled induced voltage and generates an alarm signal, which in turn drives an automatic rejection device to remove the metal impurities from the production line.

[0005] Common automatic rejection devices generally include flap-type and push-rod type. Both of them separate metal impurities by changing the movement direction of the identified metal impurities in the material movement path. Due to the influence of recognition accuracy, the area of ​​the side of the push rod or flap that contacts the metal impurity will be significantly larger than the volume of a single metal impurity. Since the metal impurities move together with the plastic granules, when the flap or push rod separates the metal impurities, it is easy to separate some of the nearby plastic granules as well, resulting in low separation accuracy and poor separation effect. Utility Model Content

[0006] The present invention provides a metal separation device for plastic granule production, which aims to solve the problem that existing automatic rejection devices are affected by the recognition accuracy. When separating metal impurities, they easily separate some of the nearby plastic granules together, resulting in low separation accuracy and poor separation effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a metal separation device for plastic granule production, comprising: a base, an electromagnetic separation mechanism provided on the base, the electromagnetic separation mechanism including an electromagnetic separation box for detecting and separating metal impurities in plastic granules, and a separation tube provided at the output end of the electromagnetic separation box;

[0008] An air separation mechanism is installed on the base. The air separation mechanism includes an air separation box. The input end of the air separation box is connected to the output end of the separation tube. A fan is installed on the air separation box. The output end of the fan is located below the output end of the separation tube. A second feeding hopper and a third feeding hopper are arranged sequentially at the bottom of the air separation box along the air blowing direction.

[0009] In a preferred embodiment, a magnetic separation mechanism is provided on the base. The magnetic separation mechanism includes a magnetic separation box located below the air separation box. The top of the magnetic separation box is connected to the second feeding hopper. A collection cabinet and a magnetic suction component are provided inside the magnetic separation box, and the magnetic suction component is located above the collection cabinet.

[0010] In a preferred embodiment, the input end of the electromagnetic separator is provided with a feeding hopper, and the output end of the electromagnetic separator is also provided with a discharging hopper.

[0011] In a preferred embodiment, an exhaust port is provided on the side of the air separator away from the blower, and a filter screen is provided on the exhaust port.

[0012] In a preferred embodiment, the magnetic suction assembly includes a plurality of magnetic suction rods, which are evenly arranged and slidably connected to the magnetic separator.

[0013] In a preferred embodiment, a second collection cabinet is movably mounted on the base, and the second collection cabinet is located below the third discharge hopper.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention utilizes an air separation mechanism, taking advantage of the fact that the density of metal impurities is greater than that of plastic particles, to further purify and separate the metal impurities that have been initially screened by the electromagnetic separation box in the air separation box, thereby effectively improving the separation accuracy of the metal separation device.

[0016] This invention, by setting up a magnetic separation mechanism, can further screen metal impurities into ferromagnetic and non-ferromagnetic metal impurities, thereby facilitating the subsequent recycling of metal impurities. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 This is the front view of the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of the air separator of this utility model.

[0020] Figure 4 This is a cross-sectional structural diagram of the magnetic separator section of this utility model.

[0021] The attached diagram is labeled as follows: 1. Base; 2. Electromagnetic separation mechanism; 21. Electromagnetic separation box; 22. Feeding hopper; 23. Control box; 24. Feeding hopper one; 25. Separation pipe; 3. Air separation mechanism; 31. Air separation box; 32. Fan; 33. Exhaust vent; 34. Feeding hopper two; 35. Feeding hopper three; 4. Magnetic separation mechanism; 41. Magnetic separation box; 42. Collection cabinet one; 43. Magnetic suction assembly; 5. Collection cabinet two. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Refer to the instruction manual appendix Figures 1 to 4 A metal separation device for plastic granule production includes: a base 1, an electromagnetic separation mechanism 2 is provided on the base 1, the electromagnetic separation mechanism 2 includes an electromagnetic separation box 21, which is used to detect and separate metal impurities in plastic granules, and a separation tube 25 is provided at the output end of the electromagnetic separation box 21.

[0024] The electromagnetic separation box 21 is a technology well known to those skilled in the art, and will not be described in detail in this utility model;

[0025] A wind classifier 3 is provided on the base 1. The wind classifier 3 includes a wind classifier box 31. The input end of the wind classifier box 31 is connected to the output end of the separation tube 25. A fan 32 is provided on the wind classifier box 31. The output end of the fan 32 is located below the output end of the separation tube 25. A second hopper 34 and a third hopper 35 are arranged sequentially at the bottom of the wind classifier box 31 along the blowing direction.

[0026] It should be noted that the airflow of fan 32 is adjustable and can be adapted and adjusted according to the actual specifications of each component in the raw material to be separated.

[0027] In this embodiment, the specific implementation scenario is as follows: after the plastic granule raw material undergoes preliminary separation in the electromagnetic separation box 21, the removed metal impurities are discharged from the separation pipe 25 into the air classifier 31. During the fall of the metal impurities in the air classifier 31, the wind generated by the fan 32 blows towards the metal impurities. Since the density of the metal impurities is significantly greater than that of the plastic granules, the distance that the denser metal impurities are blown in the horizontal direction is shorter than that of the plastic granules. Therefore, the metal impurities and plastic granules are discharged from the second discharge hopper 34 and the third discharge hopper 35, respectively, thereby enabling further purification and separation of the metal impurities that have been preliminarily screened by the electromagnetic separation box 21.

[0028] Refer to the instruction manual appendix Figure 1 and Figure 4 In this embodiment, a magnetic separation mechanism 4 is provided on the base 1. The magnetic separation mechanism 4 includes a magnetic separation box 41, which is located below the air separation box 31. The top of the magnetic separation box 41 is connected to the second feeding hopper 34. A collection cabinet 42 and a magnetic suction component 43 are provided inside the magnetic separation box 41, and the magnetic suction component 43 is located above the collection cabinet 42.

[0029] It should be noted that, due to the complex sources of recycled plastics, there are many types of metal impurities mixed in with them. Therefore, metal impurities can be further divided into ferromagnetic metal impurities and non-ferromagnetic metal impurities. By setting a magnetic suction component 43 in the magnetic separator 41, metal impurities can be further screened.

[0030] Refer to the instruction manual appendix Figure 1 and Figure 2 In this embodiment, the input end of the electromagnetic separator 21 is provided with a feeding hopper 22, and the output end of the electromagnetic separator 21 is also provided with a discharging hopper 24.

[0031] It should be noted that the plastic particles initially separated by the electromagnetic separator 21 are discharged from the feed hopper 24.

[0032] Refer to the instruction manual appendix Figure 1 In this embodiment, the air separator 31 has an exhaust port 33 on the side away from the fan 32, and a filter screen is provided on the exhaust port 33.

[0033] Refer to the instruction manual appendix Figure 1 In this embodiment, the magnetic suction component 43 includes a plurality of magnetic suction rods, which are evenly arranged and slidably connected to the magnetic separator 41.

[0034] It should be noted that the magnetic rod located in the falling path of the metal impurities will attract the ferromagnetic metal impurities, while the non-ferromagnetic metal impurities will continue to fall into the collection cabinet 42. When it is necessary to remove the ferromagnetic metal impurities from the magnetic rod, the collection cabinet 42 can be cleaned in advance, and then the magnetic rod can be pulled out from the magnetic separator 41 to scrape the ferromagnetic metal impurities adsorbed on its surface into the collection cabinet 42.

[0035] Refer to the instruction manual appendix Figure 1 and Figure 2 In this embodiment, a second collection cabinet 5 is movably disposed on the base 1, and the second collection cabinet 5 is located below the third discharge hopper 35.

[0036] It should be noted that the plastic particles screened by the air classifier 31 will fall from the feed hopper 35 into the collection cabinet 2 5.

[0037] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A metal separation device for plastic pellet production, comprising: The base (1) is provided with an electromagnetic separation mechanism (2), which includes an electromagnetic separation box (21) for detecting and separating metal impurities in plastic particles. The output end of the electromagnetic separation box (21) is provided with a separation tube (25). The feature is that the base (1) is provided with an air separation mechanism (3), the air separation mechanism (3) includes an air separation box (31), the input end of the air separation box (31) is connected to the output end of the separation pipe (25), the air separation box (31) is provided with a fan (32), the output end of the fan (32) is located below the output end of the separation pipe (25), and the bottom of the air separation box (31) is provided with a second hopper (34) and a third hopper (35) in sequence along the blowing direction.

2. The metal separation device for plastic granule production according to claim 1, characterized in that, A magnetic separation mechanism (4) is provided on the base (1). The magnetic separation mechanism (4) includes a magnetic separation box (41). The magnetic separation box (41) is located below the air separation box (31). The top of the magnetic separation box (41) is connected to the second hopper (34). A collection cabinet (42) and a magnetic suction component (43) are provided inside the magnetic separation box (41), and the magnetic suction component (43) is located above the collection cabinet (42).

3. The metal separation device for plastic granule production according to claim 2, characterized in that, The electromagnetic separator (21) is provided with a feeding hopper (22) at its input end and a discharging hopper (24) at its output end.

4. The metal separation device for plastic granule production according to claim 3, characterized in that, The air separator (31) has an exhaust port (33) on the side away from the fan (32), and a filter screen is provided on the exhaust port (33).

5. A metal separation device for plastic granule production according to claim 4, characterized in that, The magnetic suction assembly (43) includes several magnetic suction rods, which are evenly arranged and slidably connected to the magnetic separator (41).

6. A metal separation device for plastic granule production according to claim 5, characterized in that, A second collection cabinet (5) is movably mounted on the base (1), and the second collection cabinet (5) is located below the third discharge hopper (35).

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