Plastic recovery device and recovery method

Abstract

The invention belongs to the technical field of plastic recycling, and particularly relates to a plastic recycling device and method.The plastic recycling device comprises a conveying belt, an air blower and a plastic collecting box, the air blower can blow the surface of the conveying belt, a discharging part is fixedly connected to the plastic collecting box, and a cotton plate is fixedly connected to the plastic collecting box; the conveying belt is located on the upper side of the plastic collecting box in an inclined angle posture, the front baffles are fixedly connected to the front side and the rear side of the plastic collecting box, and the arc-shaped cotton block is fixedly connected to the plastic collecting box. The method comprises the following steps: 1, mechanically crushing mixed recycled materials containing plastics and iron blocks, such as waste computer cases and household appliance shells, so as to form a fragment mixture; plastic can be efficiently and stably recycled from materials of the plastic and metal iron blocks, and convenience is brought to the recycling process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of plastic recycling, and particularly relates to a plastic recycling device and method. BACKGROUND

[0002] In the recycling field, waste computer cases, household appliance shells and the like usually contain mixed structures of plastics and metal iron blocks. The conventional recycling process needs to separate the metal and the plastic by physical sorting after the mixed blocks are crushed, but the conventional magnetic sorting equipment can only attract the metal, but the plastic blocks are easily jammed with the metal blocks, resulting in that the plastic is left on the conveying belt or mixed into the metal recycling flow, which needs manual secondary sorting, thereby increasing the cost.

[0003] In order to optimize the sorting effect, the prior art has tried various improvement schemes, and a magnetic conveying belt is adopted, but the plastic is easily hindered by the iron block stacking when relying on gravity separation, and there is no active auxiliary sliding mechanism, and part of the equipment introduces a blower to reduce the jamming, but the improper wind control easily causes the plastic to fly in the collection box, and an additional closed cover body needs to be additionally added, but the closed cover body makes the plastic particles unable to automatically enter, thereby bringing inconvenience to the recycling process. SUMMARY

[0004] Therefore, the application aims to solve the technical problem of providing a plastic recycling device and method, which can efficiently and stably recycle the plastic from the material of the plastic and the metal iron block, thereby bringing convenience to the recycling process.

[0005] A plastic recycling device, comprising a conveying belt, a blower and a plastic collection box, the blower can blow the surface of the conveying belt, the plastic collection box is fixedly connected with a discharge part, the plastic collection box is fixedly connected with a cotton plate, and the conveying belt is located on the upper side of the plastic collection box in an inclined angle posture.

[0006] Further comprising front baffles fixedly connected to the front and rear sides of the plastic collection box.

[0007] Further comprising an arc-shaped cotton block fixedly connected to the plastic collection box.

[0008] The conveying belt is fixedly connected with a plurality of triangular protrusions.

[0009] The plastic recycling device is used for a recycling method of recycling plastic, and the method comprises the following steps:

[0010] Step 1: mechanically crushing the mixed recycling materials containing plastic and iron blocks such as waste computer cases and household appliance shells to form a block mixture;

[0011] Step 2: the blower is started synchronously to blow downward to assist the plastic to accelerate sliding and avoid the plastic being jammed in the gap between the iron blocks;

[0012] Step three: the scraping plate at the bottom of the conveyor belt continuously scrapes the adsorbed iron blocks to make them fall into the iron chip collection box;

[0013] Step four: the disc of the front baffle is pushed when the driving wheel of the conveyor belt rotates, causing the plastic collection box to vibrate up and down, so that the plastic residues slide along the cotton board to the discharge part;

[0014] Step five: the sliding block A drives the sliding block B to scrape the cotton board in one direction, releasing the stored water to the surface of the plastic and forcing the chips to fall off; the air bag contracts when returning to avoid reverse friction causing the plastic to return.

[0015] The beneficial effects of the device are: it can efficiently and stably recycle plastic from the material of plastic and metal iron blocks, bringing convenience to the recycling process. After the plastic enters the plastic collection box, the plastic will fall on the cotton board. In this process, the plastic will stick to the moisture on the cotton board to increase its own weight, thereby avoiding the situation that the plastic already in the plastic collection box is blown by the wind from the subsequent air blower for secondary blowing, so that the plastic in the plastic collection box flies and cannot be smoothly discharged, ensuring that the recycling task is stably carried out. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described in detail below in combination with the drawings and specific implementation methods.

[0017] Figure 1 and Figure 2 It is a schematic diagram of the overall structure of a plastic recycling device;

[0018] Figure 3 It is a schematic diagram of the structure of the conveyor belt;

[0019] Figure 4 It is a schematic diagram of the structure of the triangular block;

[0020] Figure 5 It is a schematic diagram of the structure of the plastic collection box;

[0021] Figure 6 It is a schematic diagram of the structure of the discharge part;

[0022] Figure 7 It is a schematic diagram of the structure of the sliding block A;

[0023] Figure 8 It is a schematic diagram of the structure of the fixed plate;

[0024] Figure 9 It is a schematic diagram of the structure of the U-shaped frame;

[0025] Figure 10 It is a schematic diagram of the structure of the scraping plate;

[0026] Figure 11 It is a schematic diagram of the structure of the auxiliary scraping plate;

[0027] Figure 12 Structure diagram of the iron block collecting box. DETAILED DESCRIPTION

[0028] A plastic recycling device, comprising a conveying belt 101, a blower 201 capable of blowing against the surface of the conveying belt 101, and a plastic collecting box 401, wherein the plastic collecting box 401 is fixedly connected with an exhaust portion 403, and the plastic collecting box 401 is fixedly connected with a cotton board 404; the conveying belt 101 is located on the upper side of the plastic collecting box 401 at an inclined angle, and the conveying belt 101 is a magnetic conveying belt with a self-powered source and capable of adsorbing iron blocks; such a magnetic conveying belt technology has been practically applied in the prior art and is very common, so it will not be described here again; the cotton board 404 is a wet cotton layer.

[0029] The broken waste computer cases or household appliance shells composed of plastic and iron are broken, and then the broken blocks are poured onto the conveying belt 101; since the conveying belt 101 has magnetism, it can adsorb the iron blocks in the blocks, so that the iron blocks can be transported upward synchronously with the conveying belt 101; the plastic components in the blocks will not be adsorbed by the conveying belt 101, and since the conveying belt 101 is inclined, the plastic components will not be transported upward synchronously with the iron blocks, but will slide downward along the inclined conveying belt 101 until the plastic enters the plastic collecting box 401 and is exhausted through the exhaust portion 403, thereby completing the task of separating the plastic from the waste computer cases or household appliance shells;

[0030] During the separation of iron blocks and plastic by using the continuously moving conveying belt 101, the blower 201 can be started regularly to blow downward wind along the surface of the conveying belt 101; at this time, the wind can assist the plastic to move downward along the conveying belt 101, avoiding the situation that part of the plastic is stuck between the iron blocks and cannot move downward smoothly to be gathered and exhausted by the plastic collecting box 401, thereby ensuring the smooth progress of the recycling task;

[0031] After the plastic enters the plastic collecting box 401, the plastic will fall on the cotton board 404, which is inclined, so that the plastic can be smoothly introduced into the exhaust portion 403 along the cotton board 404 and exhausted, thereby completing the plastic separation operation; during this process, the plastic will increase its weight by adhering to the moisture on the cotton board 404, thereby avoiding the situation that the plastic in the plastic collecting box 401 is blown by the wind blown by the subsequent blower 201 to fly in the plastic collecting box 401 and cannot be smoothly exhausted, thereby ensuring the stable progress of the recycling task; meanwhile, the plastic will inevitably be subjected to a cleaning step in the subsequent processing process, so that the plastic carrying moisture in this process will not affect the normal progress of the subsequent processing.

[0032] The front baffle 402 is fixed on the front and back sides of the plastic collecting box 401.

[0033] The two front baffles 402 can shield the front and back sides of the plastic collecting box 401, so that the internal space of the plastic collecting box 401 is closed, and the collection and recycling operation of the plastic pieces is further stabilized.

[0034] The arc-shaped cotton block 405 is fixed on the plastic collecting box 401, and the arc-shaped cotton block 405 is an arc-shaped wet cotton block.

[0035] When there are small-volume pieces in the plastic pieces, even after adding moisture to increase the weight by the cotton board 404, the flying pieces will be blown by the wind blown by the subsequent air blower 201, and the flying pieces will contact the arc-shaped cotton block 405, so that the arc-shaped cotton block 405 limits and contacts the small-volume pieces again to increase the weight, and further facilitates the smooth falling of all plastic pieces from the discharge part 403 position;

[0036] The curved surface design of the arc-shaped cotton block 405 causes the airflow generated by the air blower 201 to form a low-pressure vortex area when contacting the cotton block, reducing the airflow speed and weakening the pushing force on the pieces. At the same time, the curved surface guides the airflow to flow to the bottom of the plastic collecting box, forming a downward traction force to promote the natural settlement of the flying pieces. At the same time, the inclined surface of the cotton board 404 and the arc surface of the arc-shaped cotton block 405 form a continuous flow channel, so that the airflow direction changes from horizontal blowing to downward vortex, avoiding the rebound of the airflow causing secondary flying.

[0037] The plurality of triangular protrusions 102 are fixed on the conveying belt 101, and the tips of the plurality of triangular protrusions 102 are oriented in the same direction as the running direction of the conveying belt 101.

[0038] After the broken pieces are introduced onto the conveying belt 101, the plurality of triangular protrusions 102 can simultaneously assist in supporting the ferrous pieces during the process of transporting the ferrous pieces by the magnetic property of the conveying belt 101 itself, improving the separation and transportation effect of the ferrous pieces, that is, the plurality of triangular protrusions 102 can block the ferrous pieces, thereby avoiding the situation that the smaller-volume ferrous pieces are blown by the wind blown by the subsequent air blower 201, affecting the recycling and separation effect.

[0039] The tips of the triangular protrusions 102 are oriented in the same direction as the running direction of the conveying belt, and when the magnetically adsorbed iron filings pass through the protrusions, the sharp corners are embedded in the gaps between the iron filings, increasing the local pressure of the contact points and preventing the iron filings from sliding backward due to the airflow of the air blower or the vibration of the conveying belt. At the same time, the plurality of triangular protrusions 102 form a continuous V-shaped groove on the surface of the conveying belt, and the iron filings are limited between adjacent protrusions to avoid rolling and falling due to accumulation and collision.

[0040] Also include a U-shaped frame 601, the U-shaped frame 601 is slidably connected with iron block collecting box 602, the U-shaped frame 601 is connected with scraping plate 603, the U-shaped frame 601 is fixedly connected with electric push rod capable of pushing iron block collecting box 602 to slide.

[0041] In normal state, the scraping plate 603 abuts against the lower side of the 202, and during the continuous operation of the conveyor belt 101, the scraping plate 603 can scrape the lower side of the conveyor belt 101, so that the iron block on the conveyor belt 101 falls down and then falls into the iron block collecting box 602 for collection, thereby collecting and processing the iron block, and at the same time, a air extractor can be connected to the lower side of the iron block collecting box 602 by means of tightening bolts, and the air extractor is continuously operated during the collection process, thereby providing downward suction force for the iron block on the lower side of the conveyor belt 101 in cooperation with the scraping effect of the scraping plate 603, and the iron particles on the conveyor belt 101 are completely removed, thereby providing protection for the subsequent continuous separation and recovery operation.

[0042] At the same time, during the collection process, the iron block collecting box 602 is operated to slide on the U-shaped frame 601, thereby gradually moving the larger range of the iron block collecting box 602 to the front side of the scraping plate 603, so as to gradually increase the receiving range and facilitate the automatic collection of iron block.

[0043] The scraping plate 603 is slidably connected with an auxiliary scraper 604, the auxiliary scraper 604 is fixedly connected with a sliding sleeve 605, the sliding sleeve 605 is slidably connected with a moving rod 606, the scraping plate 603 is fixedly connected with a first motor, the output shaft of the first motor is fixedly connected with a first lead screw, and the first lead screw is in screw transmission with the auxiliary scraper 604.

[0044] During the scraping operation of the iron block on the conveyor belt 101 by the scraping plate 603, the auxiliary scraper 604 can be periodically operated to reciprocally slide left and right on the scraping plate 603, thereby scraping the iron block accumulated and adhered on the scraping plate 603, and the air extractor at the lower side of the iron block collecting box 602 sends all the iron block into the iron block collecting box 602 for collection, thereby further improving the effect of automatic collection of iron block.

[0045] At the same time, during the sliding process of the auxiliary scraper 604, the moving rod 606 can scrape the surface of the iron block collecting box 602, thereby periodically scraping the iron block in the central region of the iron block collecting box 602 to the left and right sides of the iron block collecting box 602, avoiding the iron block from blocking the air holes on the iron block collecting box 602 and affecting the operation of the air extractor, thereby facilitating the subsequent continuous collection operation.

[0046] The sliding mechanism of the movable rod 606 within the sliding sleeve 605 allows the movable rod 606 to slide adaptively on the sliding sleeve 605 when the iron fragment collection box 602 slides on the U-shaped frame 601, thereby ensuring the long-term scraping effect of the movable rod 606 and the sliding sleeve 605 on the inside of the iron fragment collection box 602.

[0047] The conveyor belt 101 is provided with multiple arc blocks 103. Two vertical rods 607 are fixedly connected to the scraper 603. The scraper 603 is slidably connected to the U-shaped frame 601 through the two vertical rods 607. Two first compression springs are fixedly connected between the scraper 603 and the U-shaped frame 601. The triangular protrusions 102 are evenly distributed in multiple rows on the conveyor belt 101, and each row of triangular protrusions 102 corresponds to one arc block 103.

[0048] Whenever a row of triangular protrusions 102 is about to pass the position of the scraper plate 603, the arc block 103 will push the scraper plate 603 in advance, so that the two vertical rods 607 overcome the elastic force of the two first compression springs and move down, thereby sliding the scraper plate 603 down a certain distance. This ensures that the subsequent row of triangular protrusions 102 can pass smoothly through the position of the scraper plate 603, and avoids interference between the triangular protrusions 102 and the scraper plate 603 during the operation of the equipment, which may cause the equipment to jam.

[0049] Meanwhile, periodically sliding the scraper 603 up and down can change the scraping height of the sliding sleeve 605 and the moving rod 606, thereby enriching the scraping path of the sliding sleeve 605 and the moving rod 606, bringing convenience to subsequent continuous collection operations.

[0050] It also includes a fixed plate 301, on which a fitting arc plate 302 is fixedly connected. The fitting arc plate 302 is provided with multiple mating grooves 303. A sliding groove 304 is opened on the fixed plate 301. The discharge part 403 is slidably connected in the sliding groove 304. Two second compression springs are fixed between the discharge part 403 and the fixed plate 301. A drive wheel 104 is connected to the conveyor belt 101. The drive wheel 104 is connected to a roller in the conveyor belt 101 so that the drive wheel 104 can rotate continuously when the conveyor belt 101 is running. A circular piece is fixedly connected to the front baffle 402. The drive wheel 104 can slide the front baffle 402 downward by moving the circular piece.

[0051] The fitting arc plate 302 can wrap the bottom of the conveyor belt 101, and then scrape the bottom of the conveyor belt 101 again during the operation of the conveyor belt 101, thereby further preventing iron fragments from being mixed into the plastic collection box 401, ensuring the purity of plastic recycling. The setting of multiple mating grooves 303 can provide space for multiple triangular protrusions 102 to pass through, ensuring stable operation of the equipment.

[0052] When the conveying belt 101 continuously operates, the driving wheel 104 can continuously rotate, the continuously rotating driving wheel 104 can continuously push the disc, and the front side front baffle 402 drives the plastic collecting box 401 to reciprocatingly vibrate up and down multiple times under the action of the two second compression springs, so that the plastic particles adhered in the plastic collecting box 401 are loosened by vibration, and the plastic particles are conveniently discharged from the discharge part 403, and the perfect automatic plastic recycling effect is achieved.

[0053] Further comprising a sliding block A 501 and an air bag 503 slidingly connected on the plastic collecting box 401, the sliding block A 501 and the air bag 503 are fixedly connected with a sliding plate B 502, the plastic collecting box 401 is provided with a rectangular groove, the sliding plate B 502 can contact the cotton board 404 through the rectangular groove, the plastic collecting box 401 is fixedly connected with a second motor, the output shaft of the second motor is fixedly connected with a second lead screw, the second lead screw is in screw transmission with the sliding block A 501, the sliding block A 501 and the air bag 503 are fixedly connected through a long rod, and the long rod is not shown in the figure for the convenience of observing other structures.

[0054] During the operation of the equipment, the air bag 503 can be inflated, and the sliding block A 501 and the sliding plate B 502 can slide from top to bottom multiple times, so that the cotton board 404 is scraped downward in one direction, and the plastic pieces on the cotton board 404 are more easily dropped from the cotton board 404, so that the plastic recycling operation is stably completed, and when the sliding block A 501 and the sliding plate B 502 are slid upward each time, the gas in the air bag 503 is discharged, the air bag 503 is contracted, and the one-way scraping effect is ensured.

[0055] When the air bag 503 is inflated, the sliding block A 501 and the sliding plate B 502 are pushed to slide from top to bottom in one direction, the sliding plate B 502 applies a vertical downward scraping force to the cotton board 404 through the rectangular groove, and the plastic particles are forced to slide down, the air bag is deflated when the sliding block A 501 moves upward, the sliding plate B 502 is separated from the cotton board 404, the plastic particles are prevented from being brought back by eliminating the reverse friction, the sliding plate B 502 is extruded to the wet cotton board 404 when scraping downward, the stored water is released to the surface of the plastic particles, the moisture content of the plastic particles is increased, and the anti-airflow interference ability of the particles after weight increase is enhanced.

[0056] The plastic recycling device is used for the recycling method of the plastic, and the method comprises the following steps:

[0057] Step one: the mixed recyclables containing plastic and iron blocks such as waste computer cases and household appliance shells are mechanically crushed to form a mixture of fragments;

[0058] Step two: the air blower 201 is started synchronously, and downward blowing is assisted to accelerate the sliding of the plastic and avoid the plastic from being stuck in the gap between the iron blocks;

[0059] Step three: the scraping plate 603 at the bottom of the conveyor belt continuously scrapes the adsorbed iron blocks to make them fall into the iron chip collection box 602;

[0060] Step four: the round plate of the front baffle 402 is pushed when the driving wheel 104 of the conveyor belt rotates, which causes the plastic collection box 401 to vibrate up and down, and makes the accumulated plastics slide along the cotton board 404 to the discharge part 403;

[0061] Step five: the sliding block A 501 drives the sliding block B 502 to scrape the cotton board 404 in one direction, releases the stored moisture to the surface of the plastics, and forces the broken pieces to fall off. The air bag 503 is deflated when returning to avoid reverse friction causing the plastics to be taken back.

Claims

1. A plastic recycling device, characterized by, Including the conveyor belt, the air blower and the plastic collection box, the air blower can blow to the conveyor belt surface, the plastic collection box is fixedly connected with the exhaust part, the plastic collection box is fixedly connected with the cotton plate, and the conveyor belt is located on the upper side of the plastic collection box in an inclined angle posture.

2. The plastic recycling device of claim 1, wherein, It also includes front baffles fixed on the front and rear sides of the plastic collection box.

3. A plastic recycling device as claimed in claim 2, wherein, It also includes an arc-shaped cotton block fixed on the plastic collection box.

4. The plastic recycling device of claim 3, wherein, A plurality of triangular protrusions are fixedly connected to the conveyor belt.

5. A plastic recycling device as claimed in claim 4, wherein, It also includes a U-shaped frame, an iron fragment collection box is slidingly connected to the U-shaped frame, and a scraping plate is connected to the U-shaped frame.

6. A plastic recycling device as claimed in claim 5, wherein, The scraping plate is slidingly connected with an auxiliary scraping plate, the auxiliary scraping plate is fixedly connected with a sliding sleeve, and a moving rod is slidingly connected to the sliding sleeve.

7. A plastic recycling device as claimed in claim 6, wherein, A plurality of circular arc blocks are arranged on the conveyor belt, two vertical rods are fixedly connected to the scraping plate, the scraping plate is slidingly connected with the U-shaped frame through the two vertical rods, and two first compression springs are fixedly connected between the scraping plate and the U-shaped frame.

8. A plastic recycling device according to claim 7, wherein, It also includes a fixed plate, a matching arc plate is fixedly connected to the fixed plate, a plurality of matching grooves are arranged on the matching arc plate, a sliding groove is formed in the fixed plate, the exhaust part is slidingly connected in the sliding groove, two second compression springs are fixedly connected between the exhaust part and the fixed plate, a driving rotary wheel is connected to the conveyor belt, a circular plate is fixedly connected to the front front baffle, and the driving rotary wheel can drive the front baffle to slide downward by rotating the circular plate.

9. A plastic recycling device according to claim 8, wherein, It also includes a sliding block A and an air bag slidingly connected to the plastic collection box, a sliding plate B is fixedly connected between the sliding block A and the air bag, a rectangular groove is formed in the plastic collection box, and the sliding plate B can be in contact with the cotton plate through the rectangular groove.

10. A method of recycling plastic using the plastic recycling device of claim 9, wherein, The method comprises the following steps: Step one: mechanically crushing mixed recyclables containing plastic and iron blocks such as waste computer cases and household appliance shells to form a fragment mixture; Step two: start the air blower synchronously, blow downward to assist the plastic to accelerate sliding, and avoid the plastic from being stuck in the gap between the iron blocks; Step three: the scraping plate at the bottom of the conveyor belt continuously scrapes the adsorbed iron blocks to make them fall into the iron fragment collection box; Step four: when the driving rotary wheel of the conveyor belt rotates, the circular plate of the front baffle is rotated, the plastic collection box is vibrated up and down, the retained plastic is caused to slide along the cotton plate to the exhaust part; Step five: the sliding block A drives the sliding plate B to scrape the cotton plate in one direction, releases the stored moisture to the surface of the plastic, and forcibly causes the fragments to fall off; the air bag is deflated when returning to avoid reverse friction causing the plastic to return.

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