A polypropylene scrap recycling device

Abstract

The application discloses a polypropylene scrap recycling device. The input end of the exhaust pipeline is connected with the output end of the dehumidification fan and extends into the collecting box. The top of the collecting box is provided with a first filter screen and located on both sides of the exhaust pipeline. The first filter screen is used for preventing polypropylene scraps from being discharged with gas. The bottom of the collecting box is provided with a second filter screen. The second filter screen is used for preventing polypropylene scraps from being discharged with water. The output end of the exhaust pipeline is located between the first filter screen and the second filter screen. The sidewall of the collecting box is provided with a cleaning hole. The bottom of the collecting box is connected with a water tank. The water tank is connected with a drainage pipeline. The drainage pipeline is provided with a drainage valve and is communicated with a drainage ditch. Therefore, the polypropylene scrap recycling device can separate the steam and the polypropylene scraps for processing, avoids the steam in the airflow from remaining on the cable foot stand or the ground under the factory building after being cooled, prevents the polypropylene scraps from being directly discharged into the atmosphere, and thus the environment is prevented from being polluted.

Description

Technical Field

[0001] This application relates to the field of polypropylene extrusion unit technology, and more particularly to a polypropylene debris recycling device. Background Technology

[0002] Polypropylene is a semi-crystalline thermoplastic widely used in industry and is one of the most common polymer materials. While polypropylene has high impact resistance, it has poor toughness and is prone to producing fragments during extrusion and pelletizing.

[0003] Currently, after pelleting, the polypropylene granules are cooled and solidified by pelletizing water before entering an extrusion centrifugal dryer. The dried granules separate from the pelletizing water, and the granules pass through a vibrating screen into a granule silo. Waste heat steam from the drying process is discharged into the atmosphere from the top of the dryer via an exhaust fan; the exhaust port is typically designed on the wall of the extrusion plant, at a certain height above the ground. During polypropylene plant conversion, due to the large melt index range, the polypropylene granules are prone to contain a large amount of debris. Under the centrifugal force of the dryer, this debris, along with the steam, is directly discharged into the atmosphere via the exhaust fan, causing environmental pollution. Furthermore, at low temperatures, the steam in the airflow, after cooling, easily flows to the cable trays or the ground under the plant, forming water or ice accumulation, which can damage the cable trays and increase the risk of personnel injury. Summary of the Invention

[0004] This application provides a polypropylene debris recycling device, which solves the technical problems in the present technology where debris in polypropylene granules easily causes environmental pollution under the action of centrifugal force in the dryer, and at low temperatures, the vapor in the airflow cools down and forms water or ice, which can easily damage cable brackets and increase the risk of personal injury.

[0005] This application provides a polypropylene debris recycling device, including an exhaust pipe, a collection box, a first filter screen, a second filter screen, a water tank, a drain pipe, and multiple third water spray components. The input end of the exhaust pipe is connected to the output end of a dehumidifier and extends into the collection box. The first filter screen is disposed on the top of the collection box and located on both sides of the exhaust pipe. The first filter screen is used to prevent polypropylene debris from being discharged with the gas. The second filter screen is disposed on the bottom of the collection box and is used to prevent polypropylene debris from being discharged with the water. The output end of the exhaust pipe is located between the first filter screen and the second filter screen. A cleaning hole is provided on the side wall of the collection box. The bottom of the collection box is connected to the water tank. The water tank is connected to the drain pipe, which is equipped with a drain valve and communicates with a drainage ditch. Multiple third water spray components are disposed between the second filter screen and the water tank and communicate with the water tank. The multiple third water spray components are spaced apart along the length of the water tank.

[0006] In one possible implementation, the polypropylene debris recycling device further includes a filter mechanism and an overflow component disposed within the collection box; the upper part of the collection box has an arc-shaped structure, and its lower part has a square structure; the filter mechanism includes an annular outer cylinder, an annular inner cylinder sleeved on the inner wall of the annular outer cylinder, a column located at the axis of the annular inner cylinder and the annular outer cylinder, a first reset assembly, a second reset assembly, a third filter screen, and a fourth filter screen; the third filter screen and the fourth filter screen are horizontally disposed on both sides of the column, one end of the third filter screen and the fourth filter screen are rotatably connected to the outer wall of the column, and the other end of the third filter screen and the fourth filter screen abuts against the inner wall of the annular inner cylinder; the outer side of the annular inner cylinder is provided with a first discharge hole and a second discharge hole, and passes through the... The annular outer cylinder is connected to the collection box. The first discharge hole and the second discharge hole are respectively provided with the first reset component and the second reset component. When the third filter and the fourth filter rotate inside the annular inner cylinder, the first reset component and the second reset component can be opened respectively. The overflow component is located above the column. The two ends of the overflow component are respectively connected to the annular inner cylinder. The bottom of the overflow component has a bowl-shaped structure and is provided with a first overflow hole and a second overflow hole corresponding to the third filter and the fourth filter respectively. The overflow component is connected to the collection box. The overflow component, the exhaust pipe and the collection box form an arc-shaped chamber. The output end of the exhaust pipe extends into the arc-shaped chamber. The first filter is provided at the top of the arc-shaped chamber.

[0007] In one possible implementation, the polypropylene debris recovery device further includes a first water spray component; the first water spray component is connected to the water tank and extends into the annular inner cylinder, and the plurality of water outlets of the first water spray component correspond to the third filter screen and the fourth filter screen respectively, for automatically cleaning polypropylene debris on the third filter screen and the fourth filter screen.

[0008] In one possible implementation, the polypropylene debris recycling device further includes a plurality of second water spray elements; the plurality of second water spray elements are respectively located on both sides of the first water spray element and are respectively connected to the annular inner cylinder and the annular outer cylinder, the water inlets of the plurality of second water spray elements are all disposed between the first reset assembly and the second reset assembly; the water outlets of the plurality of second water spray elements are all corresponding to the second filter screen.

[0009] In one possible implementation, the first reset assembly includes a first arc-shaped plate, a first elastic element, and a first pressure sensor; the second reset assembly includes a second arc-shaped plate, a second elastic element, and a second pressure sensor; the annular inner cylinder is respectively provided with a first arc-shaped groove and a second arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove being located on the side of the first discharge hole and the second discharge hole away from the overflow component; the first arc-shaped plate, the first elastic element, and the first pressure sensor are all disposed within the first arc-shaped groove, and the first arc-shaped plate extends out of the first arc-shaped groove; the second arc-shaped plate, the second elastic element, and the second pressure sensor are all disposed within the second arc-shaped groove, and the second arc-shaped plate extends out of the second arc-shaped groove; the first pressure sensor and the second pressure sensor are both electrically connected to the first water spray component.

[0010] In one possible implementation, the second filter screen is tilted, and the cleaning hole is located at one end of the second filter screen near the water tank.

[0011] In one possible implementation, the polypropylene debris recovery device further includes two fifth filters; both fifth filters are disposed directly below the first filter and on both sides of the exhaust pipe, and the two fifth filters are disposed within the arc-shaped chamber.

[0012] In one possible implementation, the polypropylene debris recycling device further includes two blowers; the two blowers are respectively located between the fifth filter and the first filter, the outer wall of the annular outer cylinder, the inner wall of the collection box, the fifth filter and the first filter are connected, and the blowers are used to blow the polypropylene debris between the fifth filter and the first filter toward the second filter.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects:

[0014] The polypropylene debris recovery device provided in this application includes an exhaust pipe, a collection box, a first filter screen, a second filter screen, a water tank, a drain pipe, and multiple third water spray components. In actual use, the input end of the exhaust pipe is connected to the output end of a dehumidifying fan, allowing steam and polypropylene debris to flow into the collection box through the exhaust pipe. The steam is discharged through the first filter screen, while the polypropylene debris falls into the second filter screen. The third water spray components wet the polypropylene debris in the collection box to prevent it from becoming suspended, and also clean the polypropylene debris adhering to the second filter screen. When the liquid level in the collection box is high, the drain valve of the drain pipe can be opened to drain the water into a drainage ditch. Therefore, the polypropylene debris recovery device in this application can separate steam and polypropylene debris, preventing the steam in the airflow from cooling and remaining on the cable trays or ground under the factory building, and also preventing the polypropylene debris from being directly discharged into the atmosphere, thus avoiding environmental pollution. It has a simple structure and is economical and practical. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram showing the third and fourth filters of the polypropylene debris recycling device provided in this embodiment of the application in a horizontal state;

[0017] Figure 2 A schematic diagram of the structure of the third and fourth filters of the polypropylene debris recycling device provided in the embodiments of this application, showing how polypropylene debris is poured out;

[0018] Figure 3 This is a schematic diagram of the polypropylene debris recycling device provided in an embodiment of this application.

[0019] Reference numerals: 1-Exhaust pipe; 2-Collection box; 21-Cleaning hole; 3-First filter screen; 4-Second filter screen; 5-Water tank; 6-Drain pipe; 61-Drain valve; 7-Filtering mechanism; 71-Annular outer cylinder; 72-Annular inner cylinder; 721-First discharge hole; 722-Second discharge hole; 723-First arc-shaped groove; 724-Second arc-shaped groove; 73-Column; 74-First reset assembly; 741-First arc-shaped plate; 742 743-First elastic element; 75-First pressure sensor; 76-Second reset assembly; 77-Second arc plate; 78-Second elastic element; 79-Second pressure sensor; 70-Third filter screen; 71-Fourth filter screen; 82-Overflow element; 83-Arch-shaped chamber; 84-First overflow hole; 85-Second overflow hole; 9-First water spray element; 10-Second water spray element; 11-Third water spray element; 12-Fifth filter screen; 13-Blower. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0022] This application provides a polypropylene debris recycling device, such as... Figures 1 to 3As shown. The polypropylene debris recycling device includes an exhaust pipe 1, a collection box 2, a first filter screen 3, a second filter screen 4, a water tank 5, a drain pipe 6, and multiple third water spray components 11. The input end of the exhaust pipe 1 is connected to the output end of the dehumidifier and extends into the collection box 2. Specifically, a sealing ring is provided at the connection between the exhaust pipe 1 and the collection box 2.

[0023] A first filter screen 3 is installed at the top of the collection box 2, located on both sides of the exhaust pipe 1. The first filter screen 3 is used to prevent polypropylene debris from being discharged with the gas. A second filter screen 4 is installed at the bottom of the collection box 2, which is used to prevent polypropylene debris from being discharged with the water. The output end of the exhaust pipe 1 is located between the first filter screen 3 and the second filter screen 4. A cleaning hole 21 is provided on the side wall of the collection box 2. Specifically, the first filter screen 3 can be a 150-mesh metal wire mesh, which can prevent polypropylene debris from being discharged. Both the first filter screen 3 and the second filter screen 4 are installed on the inner wall of the collection box 2 and are fixed with nuts for easy disassembly and replacement.

[0024] The bottom of the collection box 2 is connected to the water tank 5. The water tank 5 is connected to the drain pipe 6, which is equipped with a drain valve 61 and is connected to a drainage ditch. Both the water tank 5 and the drain pipe 6 can be equipped with heat tracing lines to prevent freezing and cracking in winter.

[0025] Multiple third water spray components 11 are disposed between the second filter screen 4 and the water tank 5 and are connected to the water tank 5. The multiple third water spray components 11 are spaced apart along the length of the water tank 5.

[0026] In practical use, the polypropylene debris recovery device connects the inlet of the exhaust pipe 1 to the outlet of the dehumidifier, allowing steam and polypropylene debris to flow into the collection tank 2. The steam is discharged through the first filter screen 3, while the polypropylene debris falls into the second filter screen 4. The third water spray component 11 wets the polypropylene debris to prevent it from becoming suspended and removes the debris adhering to the second filter screen 4. When the liquid level in the collection tank 2 is high, the drain valve 61 of the drain pipe 6 can be opened to drain the water into the drainage ditch. Existing devices often discharge polypropylene debris from the outlet of the dryer in the extrusion plant, causing a large accumulation of polypropylene debris on surrounding roads. Furthermore, polyolefin product debris is difficult to degrade, causing white pollution. The polypropylene debris recovery device of this application can separate the steam and polypropylene debris, preventing the steam in the airflow from cooling and remaining on the cable trays or ground under the plant, and also preventing the polypropylene debris from being directly discharged into the atmosphere, thus avoiding environmental pollution. It has a simple structure and is economical and practical.

[0027] like Figure 1 and Figure 2As shown, the polypropylene debris recycling device also includes a filter mechanism 7 and an overflow component 8 disposed within the collection box 2. The upper part of the collection box 2 has an arc-shaped structure, and its lower part has a square structure. The filter mechanism 7 includes an annular outer cylinder 71, an annular inner cylinder 72 sleeved on the inner wall of the annular outer cylinder 71, a column 73 located at the axis of the annular inner cylinder 72 and the annular outer cylinder 71, a first reset assembly 74, a second reset assembly 75, a third filter screen 76, and a fourth filter screen 77. The third filter screen 76 and the fourth filter screen 77 are respectively horizontally disposed on both sides of the column 73. One end of the third filter screen 76 and the fourth filter screen 77 is rotatably connected to the outer wall of the column 73, and the other end of the third filter screen 76 and the fourth filter screen 77 abuts against the inner wall of the annular inner cylinder 72. The outer side of the annular inner cylinder 72 is provided with a first discharge hole 721 and a second discharge hole 722, which pass through the annular outer cylinder 71 and communicate with the collection box 2. A first reset assembly 74 and a second reset assembly 75 are respectively installed inside the first discharge hole 721 and the second discharge hole 722. When the third filter screen 76 and the fourth filter screen 77 rotate inside the annular inner cylinder 72, the first reset assembly 74 and the second reset assembly 75 can be opened respectively. The overflow component 8 is located above the column 73, with both ends connected to the annular inner cylinder 72. The bottom of the overflow component 8 has a bowl-shaped structure and is provided with a first overflow hole 82 and a second overflow hole 83 corresponding to the third filter screen 76 and the fourth filter screen 77, respectively. Specifically, the column 73 is a semi-cylinder 73, and the bottom of the overflow component 8 overlaps with the bottom of the column 73 to prevent polypropylene debris from entering its gaps. The overflow component 8 is connected to the collection box 2. The overflow component 8, the exhaust pipe 1, and the collection box 2 form an arc-shaped chamber 81. The output end of the exhaust pipe 1 extends into the arc-shaped chamber 81. A first filter screen 3 is provided at the top of the arc-shaped chamber 81. Specifically, the annular outer cylinder 71, the annular inner cylinder 72, and the column 73 are all connected to the collection box 2.

[0028] It should be noted that in this embodiment, steam and polypropylene debris flow into the arc-shaped chamber 81 within the collection box 2 through the exhaust pipe 1. Steam is discharged through the first filter screen 3, and polypropylene debris, when it accumulates to a certain extent, is discharged through the first overflow hole 82 and the second overflow hole 83 into the third filter screen 76 and the fourth filter screen 77, respectively. At this time, the third filter screen 76 and the fourth filter screen 77 gradually tilt, and through gravity, the polypropylene debris accumulated on the third filter screen 76 and the fourth filter screen 77 can be poured into the first discharge hole 721 and the second discharge hole 722, thereby achieving graded treatment of the polypropylene debris and reducing the cleaning pressure caused by polypropylene debris directly entering the collection box 2. After the polypropylene debris from the third filter screen 76 and the fourth filter screen 77 is cleaned, the first reset component 74 and the second reset component 75 enable the third filter screen 76 and the fourth filter screen 77 to gradually return to their initial positions, thus allowing for continued collection of polypropylene debris.

[0029] The polypropylene debris recovery device also includes a first water spray element 9. The first water spray element 9 is connected to the water tank 5 and extends into the annular inner cylinder 72. Multiple outlets of the first water spray element 9 correspond to the third filter screen 76 and the fourth filter screen 77, respectively, for automatically cleaning polypropylene debris from the third filter screen 76 and the fourth filter screen 77. Specifically, multiple outlets of the first water spray element 9 can be arranged facing the third filter screen 76 and the fourth filter screen 77, allowing for faster cleaning of polypropylene debris.

[0030] In this embodiment, the polypropylene debris recovery device further includes multiple second water spray elements 10. The multiple second water spray elements 10 are located on both sides of the first water spray element 9 and are respectively connected to the annular inner cylinder 72 and the annular outer cylinder 71. The inlets of the multiple second water spray elements 10 are all located between the first reset assembly 74 and the second reset assembly 75. The outlets of the multiple second water spray elements 10 correspond to the second filter screen 4. The water sprayed from the second water spray elements 10 can knock the suspended polypropylene debris onto the second filter screen 4. In this embodiment, two second water spray elements 10 are provided, located on both sides of the first water spray element 9 and at the lower part of the annular inner cylinder 72. The water sprayed from the first water spray element 9 can flow out from the second water spray elements 10, preventing water accumulation in the annular inner cylinder 72 and achieving full utilization of resources.

[0031] like Figure 1 As shown, the first reset assembly 74 includes a first arc-shaped plate 741, a first elastic element 742, and a first pressure sensor 743. The second reset assembly 75 includes a second arc-shaped plate 751, a second elastic element 752, and a second pressure sensor 753. The annular inner cylinder 72 is respectively provided with a first arc-shaped groove 723 and a second arc-shaped groove 724, located on the side of the first discharge hole 721 and the second discharge hole 722 away from the overflow element 8. The first arc-shaped plate 741, the first elastic element 742, and the first pressure sensor 743 are all disposed within the first arc-shaped groove 723, with the first arc-shaped plate 741 extending out of the first arc-shaped groove 723. The second arc-shaped plate 751, the second elastic element 752, and the second pressure sensor 753 are all disposed within the second arc-shaped groove 724, with the second arc-shaped plate 751 extending out of the second arc-shaped groove 724. The first pressure sensor 743 and the second pressure sensor 753 are both electrically connected to the first water spray element 9.

[0032] It should be noted that when the third filter screen 76 moves downward from the horizontal position, the end of the third filter screen 76 away from the column 73 gradually pushes the first arc plate 741, causing the first arc plate 741 to slowly extend into the first arc groove 723 and compress the first elastic member 742. This causes the first pressure sensor 743 to sense the pressure signal, thereby controlling the first water spray member 9 to spray water towards one side of the third filter screen 76, realizing the reverse flushing of the polypropylene debris on the tilted third filter screen 76, so that the polypropylene debris on the third filter screen 76 can tilt and slide into the first discharge hole 721. Similarly, when the fourth filter screen 77 moves downward from the horizontal state, the end of the fourth filter screen 77 away from the column 73 gradually pushes the second arc plate 751, causing the second arc plate 751 to slowly extend into the second arc groove 724 and compress the second elastic member 752. This causes the second sensor to sense the pressure signal, thereby controlling the first water spray member 9 to spray water towards one side of the fourth filter screen 77, realizing the reverse flushing of the polypropylene debris on the tilted fourth filter screen 77, so that the polypropylene debris on the fourth filter screen 77 can tilt and slide into the second discharge hole 722.

[0033] Specifically, the embodiments of this application are provided with a controller, and a solenoid valve is provided at each of the multiple water outlets of the first water spraying component 9. After receiving the indication from the first sensor or the second sensor, the controller sends a signal instruction to the corresponding solenoid valve, thereby enabling water to be sprayed onto the corresponding third filter screen 76 or fourth filter screen 77.

[0034] like Figure 2 As shown, the second filter screen 4 is inclined, and the cleaning hole 21 is located at the end of the second filter screen 4 near the water tank 5. The second filter screen 4 in this embodiment of the application can facilitate the cleaning of polypropylene debris.

[0035] like Figure 1 and Figure 2 As shown, the polypropylene debris recovery device also includes two fifth filters 12. Both fifth filters 12 are positioned directly below the first filter 3 and on either side of the exhaust pipe 1, respectively, within the arc-shaped chamber 81. The fifth filters 12 further prevent polypropylene debris from being discharged with steam. In this embodiment, the fifth filters 12 are positioned on the extension surface of the annular outer cylinder 71 for easy cleaning of polypropylene debris.

[0036] Furthermore, the polypropylene debris recovery device also includes two blowers 13. The two blowers 13 are respectively located between the fifth filter screen 12 and the first filter screen 3. The outer wall of the annular outer cylinder 71, the inner wall of the collection box 2, the fifth filter screen 12 and the first filter screen 3 are connected. The blowers 13 are used to blow the polypropylene debris between the fifth filter screen 12 and the first filter screen 3 toward the second filter screen 4.

[0037] This application is not limited to the above structure. Artificial holes can also be made from the side wall of the collection box 2 to facilitate the cleaning of polypropylene debris between the fifth filter screen 12 and the first filter screen 3.

[0038] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0039] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A polypropylene debris recycling device, characterized in that, It includes an exhaust pipe (1), a collection box (2), a first filter screen (3), a second filter screen (4), a water tank (5), a drain pipe (6), and multiple third water spray components (11); The inlet end of the exhaust pipe (1) is connected to the outlet end of the dehumidifier and extends into the collection box (2); The top of the collection box (2) is provided with the first filter screen (3) and located on both sides of the exhaust pipe (1). The first filter screen (3) is used to prevent polypropylene debris from being discharged with the gas. The bottom of the collection box (2) is provided with the second filter screen (4). The second filter screen (4) is used to prevent polypropylene debris from being discharged with the water. The output end of the exhaust pipe (1) is located between the first filter screen (3) and the second filter screen (4). The side wall of the collection box (2) is provided with a cleaning hole (21), and the bottom of the collection box (2) is connected to the water tank (5). The water tank (5) is connected to the drainage pipe (6), the drainage pipe (6) is equipped with a drain valve (61), and the drainage pipe (6) is connected to the drainage ditch; Multiple third water spray elements (11) are disposed between the second filter screen (4) and the water tank (5) and are connected to the water tank (5). Multiple third water spray elements (11) are spaced apart along the length of the water tank (5). It also includes a filter mechanism (7) and an overflow component (8) disposed in the collection box (2); The upper part of the collection box (2) is an arc-shaped structure, and the lower part is a square structure; The filtration mechanism (7) includes an annular outer cylinder (71), an annular inner cylinder (72) sleeved on the inner wall of the annular outer cylinder (71), a column (73) located at the axis of the annular inner cylinder (72) and the annular outer cylinder (71), a first reset assembly (74), a second reset assembly (75), a third filter screen (76) and a fourth filter screen (77). The third filter (76) and the fourth filter (77) are respectively horizontally arranged on both sides of the column (73). One end of the third filter (76) and the fourth filter (77) is rotatably connected to the outer wall of the column (73), and the other end of the third filter (76) and the fourth filter (77) abuts against the inner wall of the annular inner cylinder (72). The outer side of the annular inner cylinder (72) is provided with a first discharge hole (721) and a second discharge hole (722), and it passes through the annular outer cylinder (71) and communicates with the collection box (2). The first discharge hole (721) and the second discharge hole (722) are respectively provided with a first reset component (74) and a second reset component (75). When the third filter screen (76) and the fourth filter screen (77) rotate inside the annular inner cylinder (72), they can respectively open the first reset component (74) and the second reset component (75). The overflow component (8) is located above the column (73). The two ends of the overflow component (8) are respectively connected to the annular inner cylinder (72). The bottom of the overflow component (8) is a bowl-shaped structure and has a first overflow hole (82) and a second overflow hole (83) corresponding to the third filter screen (76) and the fourth filter screen (77) respectively. The overflow component (8) is connected to the collection box (2). The overflow component (8), the exhaust pipe (1) and the collection box (2) form an arc-shaped chamber (81). The output end of the exhaust pipe (1) extends into the arc-shaped chamber (81). The first filter screen (3) is provided on the top of the arc-shaped chamber (81); It also includes the first water spray component (9); The first water spray component (9) is connected to the water tank (5) and extends into the annular inner cylinder (72). The multiple water outlets of the first water spray component (9) correspond to the third filter screen (76) and the fourth filter screen (77) respectively, and are used to automatically clean polypropylene debris on the third filter screen (76) and the fourth filter screen (77). The second filter screen (4) is inclined, and the cleaning hole (21) is located at the end of the second filter screen (4) near the water tank (5); It also includes two fifth filters (12); The two fifth filters (12) are both located directly below the first filter (3) and on both sides of the exhaust pipe (1). The two fifth filters (12) are located inside the arc-shaped chamber (81).

2. The polypropylene debris recycling device according to claim 1, characterized in that, It also includes multiple second water spray components (10); Multiple second water spray elements (10) are located on both sides of the first water spray element (9) and are respectively connected to the annular inner cylinder (72) and the annular outer cylinder (71). The water inlets of the multiple second water spray elements (10) are all located between the first reset assembly (74) and the second reset assembly (75). The outlets of the multiple second water spray elements (10) are all corresponding to the second filter screen (4).

3. The polypropylene debris recycling device according to claim 2, characterized in that, The first reset assembly (74) includes a first arc plate (741), a first elastic element (742) and a first pressure sensor (743), and the second reset assembly (75) includes a second arc plate (751), a second elastic element (752) and a second pressure sensor (753). The annular inner cylinder (72) is provided with a first arc groove (723) and a second arc groove (724), the first arc groove (723) and the second arc groove (724) are respectively located on the side of the first discharge hole (721) and the second discharge hole (722) away from the overflow member (8); The first arc plate (741), the first elastic element (742) and the first pressure sensor (743) are all disposed in the first arc groove (723), and the first arc plate (741) extends out of the first arc groove (723). The second arc-shaped plate (751), the second elastic element (752) and the second pressure sensor (753) are all disposed in the second arc-shaped groove (724), and the second arc-shaped plate (751) extends out of the second arc-shaped groove (724). The first pressure sensor (743) and the second pressure sensor (753) are both electrically connected to the first water spray component (9).

4. The polypropylene debris recycling device according to claim 1, characterized in that, It also includes two hair dryers (13); The two hair dryers (13) are located between the fifth filter (12) and the first filter (3), respectively. The outer wall of the annular outer cylinder (71), the inner wall of the collection box (2), the fifth filter (12) and the first filter (3) are connected. The hair dryers (13) are used to blow polypropylene debris between the fifth filter (12) and the first filter (3) toward the second filter (4).

Images