Waste PP woven bag recycling integrated device and technology thereof

Abstract

The invention belongs to the technical field of plastic recycling, and discloses a waste PP woven bag recycling integrated device and a process thereof.The waste PP woven bag recycling integrated device is characterized in that a feeding hopper is fixedly mounted on one side of the top end of a conveying belt, the outer side of the outlet end of the conveying belt is sleeved with a connecting hopper, and the bottom end of the connecting hopper is connected with a feeding port of a powerful crusher; a support is installed at the bottom end of the powerful crusher, a plurality of rotary screens are connected to the bottom end of a discharging port of the powerful crusher, the outlet ends of the rotary screens are connected with a cleaning water tank, a stirring structure is installed in the cleaning water tank, and a first conveying belt is installed at the position, located on one side of the stirring structure, in the cleaning water tank. By means of the mode of multiple times of screening, the sizes of the PP fragments are consistent, then subsequent processing is facilitated, the mode that in the prior art, the PP fragments are inconvenient to treat is changed, waste PP woven bag resources are fully utilized, waste is reduced, and circular economy development is promoted.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic recycling, and in particular relates to an integrated device for recycling waste PP woven bags and a process thereof. Background Art

[0002] With the development of the global economy and the improvement of people's living standards, the use of plastic products has continued to increase, and the number of waste PP woven bags has also shown a rapid upward trend. These waste bags are often discarded at will, causing environmental pollution, occupying valuable land resources, and even causing safety hazards. Traditional incineration methods will produce a large amount of harmful gases, causing further damage to the environment. Therefore, it has become a top priority to explore efficient and environmentally friendly methods for recycling waste PP woven bags.

[0003] Some scholars and enterprises have explored the recycling of waste PP woven bags, but most of them are limited to mechanical recycling, and there are the following problems:

[0004] It is inconvenient to process the recycled waste PP woven bags, which increases the difficulty of processing the waste PP woven bags, making it inconvenient to reuse the waste PP woven bags. Summary of the invention

[0005] The present invention aims at the problem that it is inconvenient to process the recycled waste PP woven bags in the prior art, which increases the difficulty of processing the waste PP woven bags and makes it inconvenient to reuse the waste PP woven bags. The present invention proposes the following technical solution:

[0006] An integrated device for recycling waste PP woven bags comprises: a conveyor belt, a feed hopper is fixedly installed on one side of the top of the conveyor belt, a connecting bucket is sleeved on the outer side of the outlet end of the conveyor belt, the bottom end of the connecting bucket is connected to the feed port of a powerful crusher, a bracket is installed at the bottom end of the powerful crusher, a plurality of drum screens are connected to the bottom end of the discharge port of the powerful crusher, a cleaning water tank is connected to the outlet end of the drum screen, a stirring structure is installed inside the cleaning water tank, a conveyor belt 1 is installed inside the cleaning water tank at a position on one side of the stirring structure, a rinsing water tank is installed at one end of the cleaning water tank, a conveyor belt 2 is installed inside the rinsing water tank, a hot air dryer is fixedly installed at one end of the rinsing water tank, a pouring hopper is installed on the top of the hot air dryer, a screw extruder is installed in the direction of the discharge port of the hot air dryer, a head mold is fixedly installed at one end of the screw extruder, and a pelletizer is installed at one end of the hot air dryer.

[0007] As a preferred embodiment of the above technical solution, the number of the drum screens is set to three in total, the discharge end of the drum screen located at the bottom end of the high-power crusher is connected to the feed end of the second drum screen, and the discharge end of the second drum screen is connected to the feed end of the third drum screen.

[0008] As a preferred embodiment of the above technical solution, the rinsing water tank and the cleaning water tank have the same shape, and feed ports are provided at the top of the cleaning water tank and the rinsing water tank, and the discharge end of the conveyor belt 1 is located at the top of the feed port of the rinsing water tank.

[0009] As a preferred embodiment of the above technical solution, the pelletizer is composed of a stepper motor and a cutting knife. The stepper motor is fixedly installed on one side of the hot air dryer and located outside the screw extruder. The output shaft of the stepper motor is clamped with a cutting knife and the cutting knife is fitted to one end of the head mold.

[0010] As a preferred embodiment of the above technical solution, the stirring structure includes a driving motor fixedly installed on one side of the cleaning water tank, a sprocket structure is fixedly installed on one end of the driving motor, a plurality of rotating rods are rotatably connected inside the cleaning water tank, a filter cartridge is synchronously rotatably connected to the outside of the rotating rods, filter plates are equidistantly welded to the outside of the filter cartridge, a movable plate is slidably connected inside the filter plate, and barrier strips are welded to the top and bottom of the movable plate.

[0011] As a preferred embodiment of the above technical solution, the sprocket structure is composed of a chain and three sprockets, the number of the rotating rods is set to three, and the three rotating rods are fixedly connected to the three sprockets respectively.

[0012] As a preferred embodiment of the above technical solution, a mounting sleeve is welded to the outer side of the rotating rod at a position between the inner side of the filter cartridge, a stirring plate is equidistantly welded to the outer side of the mounting sleeve, a connecting rod is equidistantly welded to one end of the rotating rod, one end of the connecting rod is fixedly connected to the outer side of the filter cartridge, a number of columns are welded to the center points of the connecting rods, and the columns are rotatably connected to the inside of the cleaning sink.

[0013] As a preferred embodiment of the above technical solution, positioning plates are rotatably connected on both sides of the mounting sleeve, the outer side of the positioning plate and the inner side of the filter cartridge fit together, the inner side of the positioning plate and the outer side of the rotating rod fit together, one of the positioning plates is fixedly connected to the inner wall of the cleaning sink, and an arc plate is welded between the two positioning plates and at the position where the positioning plates fit with the inner wall of the filter cartridge.

[0014] A process for recycling waste PP woven bags, characterized by comprising the following steps:

[0015] S1: Waste recycling: Waste PP / woven bags are first collected and transported to the recycling plant, and then transported to the high-powered crusher through a conveyor belt for crushing;

[0016] S2: Waste screening: The powerful crusher breaks the waste woven bags into pieces, which then enter the drum screen to separate the pieces that meet the required particle size range, and the unqualified pieces are recycled and re-crushed;

[0017] S3: Waste cleaning: The screened fragments enter the cleaning tank and the rinsing tank, where they are cleaned and rinsed to remove impurities, and then enter the hot air dryer for drying to reduce the moisture content to a certain standard;

[0018] S4: Extrusion granulation: The dried PP fragments enter the screw extruder, are melt-plasticized and extruded into strips by the screw extruder, and are diced by a pelletizer to obtain recycled PP pellets;

[0019] S5: Recycling and regeneration: The recycled PP granules are packaged through the packaging system and become raw materials that can be used to reprocess and produce plastic products such as plastic baskets, plastic pipes, etc., re-enter the market circulation link, and realize the recycling of waste PP / woven bags.

[0020] The beneficial effects of the present invention are:

[0021] (1) Through multiple screening, the size of PP fragments is made consistent, which is convenient for subsequent processing, changing the inconvenient way of processing PP fragments in the prior art, and making full use of waste PP woven bag resources, reducing waste, and promoting the development of circular economy;

[0022] (2) At the same time, the recycled PP fragments are used to produce low-cost, high-toughness recycled plastics to meet different market demands, and the economic benefits are maximized through resource recovery and production of recycled materials;

[0023] (3) The PP fragments can be dug out and moved along the inside of the water, so that the PP fragments can be fully cleaned, preventing the top of some PP fragments from being unable to contact the water, resulting in unsatisfactory cleaning effect of the PP fragments.

[0024] (4) The waves are used to drive the PP fragments to flow on the water surface, so that the PP fragments enter the next cleaning station, thereby preventing the PP fragments from accumulating in one place and affecting the cleaning of the PP fragments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It shows the structural schematic diagram of the integrated device for recycling waste PP woven bags in Example 1;

[0026] Figure 2 Shown is a schematic structural diagram of the stirring structure in Example 1;

[0027] Figure 3 The figure shows the installation structure diagram of the filter cartridge in Example 1;

[0028] Figure 4 The figure shows a schematic diagram of the installation structure of the connecting rod in Example 1;

[0029] Figure 5 The figure shows a schematic diagram of the installation structure of the stirring plate in Example 1;

[0030] Figure 6 The example 1 is shown Figure 5 Schematic diagram of the structure of area A in the middle.

[0031] In the figure: 1. conveyor belt; 2. feed hopper; 3. bracket; 4. connecting bucket; 5. high-power crusher; 6. drum screen; 7. cleaning sink; 8. stirring structure; 81. drive motor; 82. sprocket structure; 83. rotating rod; 84. connecting rod; 85. filter cartridge; 86. filter plate; 87. moving plate; 88. barrier strip; 89. mounting sleeve; 810. stirring plate; 811. positioning plate; 812. arc plate; 9. conveyor belt one; 10. rinsing sink; 11. conveyor belt two; 12. emptying hopper; 13. hot air dryer; 14. screw extruder; 15. head mold; 16. pelletizer. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0033] Example 1

[0034] The present invention provides an integrated device and process for recycling waste PP woven bags, such as Figures 1 to 6 As shown, it includes a conveyor belt 1, a feed hopper 2 is fixedly installed on one side of the top of the conveyor belt 1, a connecting bucket 4 is sleeved on the outer side of the outlet end of the conveyor belt 1, and the bottom end of the connecting bucket 4 is connected to the feed port of a powerful crusher 5, a bracket 3 is installed at the bottom end of the powerful crusher 5, a plurality of drum screens 6 are connected to the bottom end of the discharge port of the powerful crusher 5, a cleaning water tank 7 is connected to the outlet end of the drum screen 6, a stirring structure 8 is installed inside the cleaning water tank 7, a conveyor belt 1 9 is installed inside the cleaning water tank 7 at a position on one side of the stirring structure 8, a rinsing water tank 10 is installed at one end of the cleaning water tank 7, a conveyor belt 2 11 is installed inside the rinsing water tank 10, a hot air dryer 13 is fixedly installed at one end of the rinsing water tank 10, a pouring hopper 12 is installed at the top of the hot air dryer 13, a screw extruder 14 is installed in the discharge port direction of the hot air dryer 13, a head mold 15 is fixedly installed at one end of the screw extruder 14, and a pelletizer 16 is installed at one end of the hot air dryer 13.

[0035] like Figure 1As shown, the number of drum screens 6 is set to three. The discharge end of the drum screen 6 located at the bottom end of the high-power crusher 5 is connected to the feed end of the second drum screen 6, and the discharge end of the second drum screen 6 is connected to the feed end of the third drum screen 6, which can facilitate multiple screening of the crushed PP fragments, increase the number of screening times, make the size of the screened PP fragments more uniform, and improve the uniformity of the overall size.

[0036] like Figure 1 As shown, the rinsing tank 10 and the cleaning tank 7 have the same shape, and feed ports are provided at the top of the cleaning tank 7 and the rinsing tank 10. The discharge end of the conveyor belt 9 is located at the top of the feed port of the rinsing tank 10, which can facilitate the PP fragments after the cleaning tank 7 to enter the rinsing tank 10 for rinsing, thereby changing the difficulty of rinsing the PP fragments.

[0037] like Figure 1 As shown, the pelletizer 16 is composed of a stepper motor and a cutting knife. The stepper motor is fixedly installed on one side of the hot air dryer 13 and located outside the screw extruder 14. The output shaft of the stepper motor is clamped with a cutting knife and the cutting knife is fitted to one end of the die head mold 15.

[0038] It is convenient to cut the product extruded along the inside of the die head mold 15, so that the product can be pelletized, which changes the difficulty of pelletizing the product.

[0039] like Figures 2 to 6 As shown, the stirring structure 8 includes a driving motor 81 fixedly mounted on one side of the cleaning tank 7, a sprocket structure 82 is fixedly mounted on one end of the driving motor 81, a plurality of rotating rods 83 are rotatably connected inside the cleaning tank 7, a filter cartridge 85 is synchronously rotatably connected to the outer side of the rotating rod 83, a filter plate 86 is equidistantly welded to the outer side of the filter cartridge 85, a movable plate 87 is slidably connected inside the filter plate 86, and barrier strips 88 are welded to the top and bottom of the movable plate 87;

[0040] When the rotating rod 83 rotates, the filter cartridge 85 is driven to rotate, and when the filter cartridge 85 rotates, the filter plate 86 is driven to rotate. When the filter plate 86 rotates, the PP fragments flow along the inside of the water, so that the PP fragments are fully immersed in the water, and when the moving plate 87 rotates inside the water, waves are formed inside the water, thereby facilitating the separation between the PP fragments and the filter plate 86.

[0041] like Figures 2 to 6 As shown, the sprocket structure 82 is composed of a chain and three sprockets, and the number of rotating rods 83 is set to three in total, and the three rotating rods 83 are fixedly connected to the three sprockets respectively;

[0042] The sprocket structure 82 can make the multiple rotating rods 83 rotate synchronously, thereby reducing the difficulty of synchronous rotation of the multiple rotating rods 83.

[0043] like Figures 2 to 6 As shown, a mounting sleeve 89 is welded at a position between the outer side of the rotating rod 83 and the inner side of the filter cartridge 85, and a stirring plate 810 is welded at an equal distance on the outer side of the mounting sleeve 89. A connecting rod 84 is welded at an equal distance on one end of the rotating rod 83, and one end of the connecting rod 84 is fixedly connected to the outer side of the filter cartridge 85. A plurality of columns are welded at the center points of the connecting rods 84, and the columns are rotatably connected to the inside of the cleaning tank 7.

[0044] When the rotating rod 83 rotates, the mounting sleeve 89 is driven to rotate, and when the mounting sleeve 89 rotates, the stirring plate 810 is driven to rotate, thereby changing the difficulty of rotating the stirring plate 810, and under the action of the connecting rod 84, the filter cartridge 85 is driven to rotate synchronously, thereby changing the difficulty of rotating the filter cartridge 85.

[0045] like Figures 2 to 6 As shown, the mounting sleeve 89 is rotatably connected with positioning plates 811 on both sides, the outer side of the positioning plates 811 and the inner side of the filter cartridge 85 fit together, and the inner side of the positioning plates 811 and the outer side of the rotating rod 83 fit together, one of the positioning plates 811 is fixedly connected to the inner wall of the cleaning water tank 7, and an arc plate 812 is welded between the two positioning plates 811 and at the position where the inner wall of the filter cartridge 85 fits together;

[0046] Due to the action of the positioning plate 811, the arc plate 812 is fixed, and the arc plate 812 prevents the stirring plate 810 from driving the flow outward along the inside of the filter cylinder 85 when rotating, thereby preventing the problem of pushing the PP fragments to produce reverse backflow.

[0047] A process for recycling waste PP woven bags, characterized by comprising the following steps:

[0048] S1: Waste recycling: Waste PP / woven bags are first collected and transported to the recycling plant, and then transported to the powerful crusher 5 through the conveyor belt 1 for crushing;

[0049] S2: Waste screening: The powerful crusher 5 crushes the waste woven bags into fragments, which then enter the drum screen 6 to separate the fragments that meet the required particle size range, and the unqualified fragments are recycled and crushed again;

[0050] S3: Waste cleaning: The screened debris enters the cleaning tank 7 and the rinsing tank 10, where it is cleaned and rinsed to remove impurities, and then enters the hot air dryer 13 for drying to reduce the moisture content to a certain standard;

[0051] S4: extrusion granulation: the dried PP fragments enter the screw extruder 14, are melt-plasticized and extruded into strips by the screw extruder 14, and are diced by the pelletizer 16 to obtain recycled PP pellets;

[0052] S5: Recycling and regeneration: The recycled PP granules are packaged through the packaging system and become raw materials that can be used to reprocess and produce plastic products such as plastic baskets, plastic pipes, etc., re-enter the market circulation link, and realize the recycling of waste PP / woven bags.

[0053] Working principle: In actual use, the integrated device for recycling waste PP woven bags collects waste PP / woven bags along the feed hopper 2 and enters the top of the conveyor belt 1, and is transported to the connecting bucket 4 through the conveyor belt 1, and then enters the powerful crusher 5 along the connecting bucket 4 for crushing. After the powerful crusher 5 crushes the material, it enters the drum screen 6, and is screened multiple times inside the drum screen 6. After multiple screenings, it enters the cleaning tank 7 for cleaning, and after cleaning, the PP fragments are transported along the stirring structure 8 inside the cleaning tank 7. The transported PP fragments enter the conveyor belt 9, and enter the rinsing tank 10 along the conveyor belt 9 for rinsing, and then are transported to the emptying hopper 12 by the conveyor belt 2 11. At this time, the PP fragments enter the hot air dryer 13 for drying. The dried PP fragments enter the screw extruder 14. Under the action of the screw extruder 14, they undergo heating, melting, plasticization and other processes to form a uniform melt. The melt is extruded into strips through the die head 15, and then cut into particles of specific shapes and sizes by the pelletizer 16. Through multiple screening methods, the size of the PP fragments is made consistent, which is convenient for subsequent processing, changing the inconvenient way of processing PP fragments in the prior art, and making full use of waste PP woven bag resources, reducing waste, and promoting the development of a circular economy. At the same time, the recycled PP fragments are used to produce low-cost, high-toughness recycled plastics to meet different market needs, and through resource recovery and production of recycled materials, the economic benefits are maximized;

[0054] During the stirring process, the driving motor 81 drives the sprocket structure 82 to operate, and the sprocket structure 82 drives the multiple rotating rods 83 to rotate synchronously when it operates. At this time, the rotating rod 83 drives the filter barrel 85 to rotate under the action of the connecting rod 84. When the filter barrel 85 rotates, it drives the filter plate 86 to rotate. When the filter plate 86 rotates, it enters the direction of the feed port of the cleaning tank 7. At this time, the moving plate 87 is driven to move under the action of gravity. When the moving plate 87 moves, it drives the barrier strip 88 and the top of the filter plate 86 to fit together, so that the shape of the filter plate 86 is L-shaped, and the PP fragments can be dug out, so that the PP fragments move along the inside of the water, so that the PP fragments are fully cleaned, and the problem of unsatisfactory PP fragment cleaning effect caused by the top of some PP fragments being unable to contact with water is prevented. When the filter barrel 85 rotates more than ninety degrees, the PP fragments rise under the action of water buoyancy, and at the same time, the moving plate 87 at the top of the filter plate 86 moves in the opposite direction;

[0055] At the same time, in this method, the rotating rod 83 synchronously drives the installation sleeve 89 to rotate, and when the installation sleeve 89 rotates, it drives the stirring plate 810 to rotate. Since the stirring plate 810 is solid, the stirring plate 810 drives the water to flow at this time, and the arc plate 812 is used to block the water in this process to prevent the water from flowing into the direction of the feed port of the cleaning tank 7, and make the water flow along the discharge port of the cleaning tank 7, thereby forming waves, and using the waves to drive the PP fragments to flow on the water surface, so that the PP fragments enter the next cleaning station, thereby preventing the PP fragments from accumulating in one place and affecting the cleaning of the PP fragments.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An integrated device for recycling waste PP woven bags, characterized in that: include: A conveyor belt (1), a feed hopper (2) is fixedly installed on one side of the top of the conveyor belt (1), a connecting hopper (4) is sleeved on the outer side of the outlet end of the conveyor belt (1), the bottom end of the connecting hopper (4) is connected to the feed port of a powerful crusher (5), a bracket (3) is installed at the bottom end of the powerful crusher (5), a plurality of drum screens (6) are connected to the bottom end of the discharge port of the powerful crusher (5), the outlet end of the drum screen (6) is connected to a cleaning water tank (7), a stirring structure (8) is installed inside the cleaning water tank (7), and the stirring structure (8) is located inside the cleaning water tank (7). ) is installed at one side of the washing water tank (7), a rinsing water tank (10) is installed at one end of the washing water tank (7), a conveyor belt (11) is installed inside the rinsing water tank (10), a hot air dryer (13) is fixedly installed at one end of the rinsing water tank (10), a pouring hopper (12) is installed at the top of the hot air dryer (13), a screw extruder (14) is installed in the discharge direction of the hot air dryer (13), a head mold (15) is fixedly installed at one end of the screw extruder (14), and a pelletizer (16) is installed at one end of the hot air dryer (13).

2. The integrated device for recycling waste PP woven bags according to claim 1 is characterized in that: The number of the drum screens (6) is set to three in total, the discharge end of the drum screen (6) located at the bottom end of the high-power crusher (5) is connected to the feed end of the second drum screen (6), and the discharge end of the second drum screen (6) is connected to the feed end of the third drum screen (6).

3. The integrated device for recycling waste PP woven bags according to claim 1 is characterized in that: The rinsing water tank (10) and the cleaning water tank (7) have the same shape, and the tops of the cleaning water tank (7) and the rinsing water tank (10) are both provided with feed ports, and the discharge end of the conveyor belt 1 (9) is located at the top of the feed port of the rinsing water tank (10).

4. The integrated device for recycling waste PP woven bags according to claim 1 is characterized in that: The pelletizer (16) is composed of a stepper motor and a cutting knife. The stepper motor is fixedly installed on one side of the hot air dryer (13) and is located outside the screw extruder (14). The output shaft of the stepper motor is clamped with a cutting knife, and the cutting knife is fitted to one end of the head mold (15).

5. The integrated device for recycling waste PP woven bags according to claim 1 is characterized in that: The stirring structure (8) comprises a driving motor (81) fixedly mounted on one side of the cleaning water tank (7), a sprocket structure (82) being fixedly mounted on one end of the driving motor (81), a plurality of rotating rods (83) being rotatably connected inside the cleaning water tank (7), a filter cartridge (85) being synchronously rotatably connected outside the rotating rods (83), a filter plate (86) being equidistantly welded outside the filter cartridge (85), a movable plate (87) being slidably connected inside the filter plate (86), and barrier strips (88) being welded at both the top and bottom ends of the movable plate (87).

6. The integrated device for recycling waste PP woven bags according to claim 5 is characterized in that: The sprocket structure (82) is composed of a chain and three sprockets. The number of the rotating rods (83) is three in total. The three rotating rods (83) are fixedly connected to the three sprockets respectively.

7. The integrated device for recycling waste PP woven bags according to claim 5 is characterized in that: A mounting sleeve (89) is welded to the outer side of the rotating rod (83) at a position between the inner side of the filter cartridge (85), and stirring plates (810) are welded to the outer side of the mounting sleeve (89) at equal intervals. A connecting rod (84) is welded to one end of the rotating rod (83) at equal intervals, and one end of the connecting rod (84) is fixedly connected to the outer side of the filter cartridge (85). A plurality of upright posts are welded to the center points of the connecting rods (84), and the upright posts are rotatably connected to the inside of the cleaning water tank (7).

8. The integrated device for recycling waste PP woven bags according to claim 2 is characterized in that: Positioning plates (811) are rotatably connected to both sides of the mounting sleeve (89); the outer side of the positioning plate (811) and the inner side of the filter cartridge (85) fit together; the inner side of the positioning plate (811) and the outer side of the rotating rod (83) fit together; one of the positioning plates (811) and the inner wall of the cleaning water tank (7) are fixedly connected; an arc-shaped plate (812) is welded between the two positioning plates (811) and at the position where they fit the inner wall of the filter cartridge (85).

9. A process for recycling waste PP woven bags according to claim 8, characterized in that: The following steps are involved: S1: Waste recycling: Waste PP / woven bags are first collected and transported to a recycling plant, and then transported to a high-powered crusher (5) via a conveyor belt (1) for crushing; S2: waste screening: the powerful crusher (5) crushes the waste woven bags into fragments, which then enter the drum screen (6) to separate the fragments that meet the required particle size range, and the unqualified fragments are recycled and crushed again; S3: Waste cleaning: The screened fragments enter the cleaning tank (7) and the rinsing tank (10), where they are cleaned and rinsed to remove impurities, and then enter the hot air dryer (13) for drying to reduce the moisture content to a certain standard; S4: extrusion granulation: the dried PP fragments enter the screw extruder (14), are melt-plasticized and extruded into strips by the screw extruder (14), and are pelletized by a pelletizer (16) to obtain recycled PP pellets; S5: Recycling and regeneration: The recycled PP granules are packaged through the packaging system and become raw materials that can be used to reprocess and produce plastic products (such as plastic baskets, plastic pipes, etc.), re-enter the market circulation link, and realize the recycling of waste PP / woven bags.

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