Particle screening device for recycled polyester particles

Abstract

The utility model discloses a particle screening device for recycled polyester particles, and relates to the technical field of screening devices. The device comprises a screening pool, the interior of the screening pool is divided into a feeding bin, a separating bin and a discharging bin in sequence through two partition plates, a material blocking cover is fixedly connected to the upper portion of one side of the screening pool, a product conveying assembly is arranged in the screening pool, an impurity discharging assembly is arranged at the top of the separating bin, and a water filtering assembly is arranged at the bottom of the material blocking cover; the product conveying assembly comprises a driven roller rotationally connected to the bottom of the feeding bin and a driving roller rotationally connected to the interior of the material blocking cover, and the exteriors of the driving roller and the driven roller are both in transmission connection with a material conveying belt; the impurity discharging assembly comprises a conveyor, and a plurality of scraping plates are fixedly arranged on the outer side of a conveying belt of the conveyor in the circumferential direction. Impurities such as polyethylene, polypropylene and polyvinyl chloride in raw materials gradually float upwards under the action of buoyancy, and then sunk polyester particles are discharged through the material conveying belt, so that the impurities can be quickly removed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to screening device technical field, especially, relate to a granule screening device for regenerative polyester granule. BACKGROUND

[0002] The main component of regenerative polyester granule is polyethylene terephthalate (PET), which is a granular product processed from waste polyester materials such as PET bottles, polyester fiber fabrics, and films. It can be used to produce clothing fabrics and home textile products. In the field of plastic packaging, it can be used to manufacture bottle packaging, plastic film, and sheet materials. It can also be used to manufacture engineering plastics and as a filler material for manufacturing plastic flowerpots, trays, and other plastic products, effectively realizing resource recycling.

[0003] During the production of regenerative polyester granule, the recycling sources are extremely diverse. Waste polyester products are often mixed with other plastic products such as PE shopping bags, PP lunch boxes, and PVC pipes during recycling. In the sorting process, different plastics are difficult to separate accurately due to their similar appearance, resulting in the mixing of polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC) impurities in the finished regenerative polyester granule. The presence of these impurities seriously reduces the product performance. However, the existing screening devices can only screen the size of the granules and cannot remove polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC) impurities.

[0004] Therefore, we provide a granule screening device for regenerative polyester granule to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a granule screening device for regenerative polyester granule. Through the action of buoyancy, the polyethylene, polypropylene, and polyvinyl chloride impurities in the raw materials gradually float up, and then the sinking polyester granules are discharged through the conveying belt. This solves the problem of difficult removal of polyethylene, polypropylene, and polyvinyl chloride impurities in the existing regenerative polyester granule.

[0006] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a granule screening device for regenerated polyester granule, including screening pool, the inside of screening pool is divided into feed bin, separation bin and discharge bin in proper order through two partitions, and the bottom of feed bin, separation bin and discharge bin all are communicated, and the upper portion of one side of screening pool is fixedly connected with the material baffle cover, and the inside of screening pool is provided with product conveying assembly, and the top of separation bin is provided with impurity discharge assembly, and the bottom of material baffle cover is provided with filter water subassembly, product conveying assembly includes the driven roller of rotation connection in the bottom of feed bin and the drive roller of rotation connection in the inside of material baffle cover, and the outside of drive roller and driven roller all are transmission connection with the material belt, and the outside of material baffle cover is fixedly connected with the conveyer motor, and the output end of drive roller pivot is fixedly connected with the conveyer motor, impurity discharge assembly includes the conveyer of fixed connection in the top of separation bin, and the outside of conveyer belt is fixed with a plurality of scraping plates along the circumference, and the back of screening pool is fixedly connected with the discharge chute, and the bottom of the inner chamber of discharge chute is provided with a plurality of evenly distributed drainage holes.

[0008] The utility model further sets up, filter water subassembly includes the discharge cylinder of fixed connection in the bottom of material baffle cover, and the top of discharge cylinder is communicated with material baffle cover, and its bottom evenly is provided with a plurality of drainage holes, and the inside of discharge cylinder is rotationally connected with the stack screw rod, and one end of stack screw rod extends to the outside through discharge cylinder, and one end of discharge cylinder is fixedly connected with the discharge motor, and one end of stack screw rod on the outside of discharge cylinder is fixed on the output end of discharge motor, and the bottom of discharge cylinder is fixedly connected with the discharge pipe that is communicated with discharge cylinder near the discharge motor.

[0009] The utility model further sets up, the back of screening pool is fixedly connected with the water collecting tank, and impurity discharge assembly is located above water collecting tank, and the side of screening pool that is fixedly connected with material baffle cover is fixedly connected with the guide groove, and the bottom end of guide groove is inserted into the inside of water collecting tank.

[0010] The utility model further sets up, and the water pump is installed on the other side of screening pool, and the water pump is communicated with water collecting tank between the water pump and water collecting tank, and the water pump output end is communicated with the backwater pipe between the upper portion of feed bin side wall.

[0011] The utility model further sets up, and the inside of feed bin is fixedly connected with the guide plate that is perpendicular with material belt.

[0012] The utility model further sets up, and the inside of material belt is provided with a plurality of evenly distributed through -holes, and the outside of material belt is evenly fixed with a plurality of horizontal strips along the circumference.

[0013] The utility model further sets up, and the scraping plate is the elastic soft board of comb structure.

[0014] The utility model further sets up, and the liquid filled in screening pool is saturated brine.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model discloses a material in the action under the buoyancy gradually floats up polyethylene, polypropylene, polyvinyl chloride etc. Impurity, subsequently through the sinking polyester particle of material conveying belt is sent to the material cover in the material conveying belt and falls into the material discharge cylinder, after that, moisture can be discharged through the drain hole of the material discharge cylinder, and polyester particle is discharged from the discharge pipe under the drive of the stacking screw, thereby can realize the polyethylene, polypropylene, polyvinyl chloride etc. of polyester particle is screened out fast.

[0017] 2. The utility model discloses a material through the starting conveyor drives the material scraping plate rotation and scrape the impurity particle floating on the water surface into the material discharge groove to realize the quick collection of impurity.

[0018] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be needed to use the drawing of the embodiment to introduce briefly, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0020] Figure 1 It is the front structure schematic diagram of the utility model.

[0021] Figure 2 It is the back structure schematic diagram of the utility model.

[0022] Figure 3 It is the overall cross section structure schematic diagram of the utility model.

[0023] Figure 4 It is the structure schematic diagram of the water filter assembly of the utility model.

[0024] In the drawing, the component list represented by each sign is as follows:

[0025] 100, screening pool;101, feed bin;1011, guide plate;102, separation bin;103, discharge bin;200, material cover;300, product conveying assembly;301, driven roller;302, drive roller;303, material conveying belt;304, conveying motor;400, impurity discharge assembly;401, conveyor;402, material scraping plate;403, material discharge groove;500, water filter assembly;501, material discharge cylinder;502, stacking screw;503, discharge motor;504, discharge pipe;600, water collecting tank;700, flow guide groove;800, water pump;801, water suction pipe;802, water return pipe. DETAILED DESCRIPTION

[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] Embodiment 1

[0028] Please refer to Figures 1 to 4 The utility model discloses a granule screening device for regenerated polyester particles, which comprises a screening pool 100. The inside of the screening pool 100 is divided into a feeding bin 101, a separation bin 102 and a discharging bin 103 in sequence by two partitions. The bottom of the feeding bin 101, the separation bin 102 and the discharging bin 103 are connected in communication. A material blocking cover 200 is fixedly connected to the upper part of one side of the screening pool 100. A product conveying assembly 300 is arranged in the inside of the screening pool 100. An impurity discharging assembly 400 is arranged on the top of the separation bin 102. A water filtering assembly 500 is arranged on the bottom of the material blocking cover 200. The liquid filled in the screening pool 100 is saturated brine. The impurities can float and the polyester particles can sink in the saturated brine, so that the impurities can be quickly removed. The product conveying assembly 300 comprises a driven roller 301 rotatably connected to the bottom of the feeding bin 101 and a driving roller 302 rotatably connected to the inside of the material blocking cover 200. The driving roller 302 and the driven roller 301 are both drivingly connected with a material conveying belt 303. A conveying motor 304 is fixedly connected to the outside of the material blocking cover 200. The rotating shaft of the driving roller 302 is fixedly connected to the output end of the conveying motor 304. The polyester particles sinking to the bottom can be discharged by driving the material conveying belt 303 by the driving roller 302.

[0029] Specifically, the water filtering assembly 500 comprises a discharging cylinder 501 fixedly connected to the bottom of the material blocking cover 200. The top of the discharging cylinder 501 is connected in communication with the material blocking cover 200, and the bottom of the discharging cylinder 501 is uniformly provided with a plurality of water discharge holes. A spiral screw 502 is rotatably connected in the inside of the discharging cylinder 501. One end of the spiral screw 502 extends to the outside through the discharging cylinder 501. A discharging motor 503 is fixedly connected to one end of the discharging cylinder 501. One end of the spiral screw 502 located outside the discharging cylinder 501 is fixedly connected to the output end of the discharging motor 503. A discharging pipe 504 connected in communication with the discharging cylinder 501 is fixedly connected to the bottom of the discharging cylinder 501 close to the discharging motor 503. The moisture can be discharged through the water discharge holes in the bottom of the discharging cylinder 501. The polyester particles can be discharged by the rotating spiral screw 502, so that the moisture of the discharged polyester particles can be reduced.

[0030] Further, the inside of the feeding bin 101 is fixedly connected with a material guide plate 101a which is perpendicular to the material conveying belt 303, and the material guide plate 101a can avoid the raw materials from being stuck in the gap between the material conveying belt 303 and the feeding bin 101; the inside of the material conveying belt 303 is provided with a plurality of evenly distributed through holes, and the outside of the material conveying belt 303 is fixedly provided with a plurality of transverse strips in the circumferential direction, and the plurality of transverse strips can increase the friction.

[0031] The operation process of the embodiment is as follows: when it is needed to screen out polyethylene, polypropylene, polyvinyl chloride and the like in the polyester particles, first, the raw materials are put into the inside of the screening pool 100 through the feeding bin 101, then the raw materials fall on the material conveying belt 303 after touching the material guide plate 101a, then the material conveying belt 303 is driven to rotate by starting the conveying motor 304, so that the material conveying belt 303 rotates, then the material conveying belt 303 conveys the raw materials into the separation bin 102, then the impurities such as polyethylene, polypropylene and polyvinyl chloride in the raw materials gradually float up under the action of the buoyancy, and finally the polyester particles left on the material conveying belt 303 fall into the discharge cylinder 501 after being conveyed into the material blocking cover 200, at this time, the moisture can be discharged through the drainage holes in the bottom of the discharge cylinder 501, and the polyester particles can be discharged from the discharge pipe 504 by driving the stacking screw 502 to rotate by the discharging motor 503, so that the polyethylene, polypropylene and polyvinyl chloride in the polyester particles can be quickly screened out.

[0032] Embodiment 2

[0033] Please refer to Figures 2 to 3 On the basis of the specific embodiment one, the impurity discharge assembly 400 includes a conveyor 401 fixedly connected to the top of the separation bin 102, a plurality of scraping plates 402 are fixedly arranged on the outer side of the conveying belt of the conveyor 401 in the circumferential direction, a discharge chute 403 is fixedly connected to the back of the screening pool 100, and a plurality of evenly distributed drainage holes are formed in the bottom of the inner cavity of the discharge chute 403, the impurity particles floating on the water surface can be scraped off by driving the scraping plates 402 to rotate by the conveyor 401, so that the impurities can be quickly collected.

[0034] Specifically, the back of the screening pool 100 is fixedly connected with a water collecting tank 600, and the impurity discharge assembly 400 is located above the water collecting tank 600, one side of the screening pool 100 on which the material blocking cover 200 is fixedly arranged is fixedly connected with a flow guide groove 700, and the bottom end of the flow guide groove 700 is inserted into the inside of the water collecting tank 600, and the flow guide groove 700 can realize the recycling of saturated brine.

[0035] Further, the other side of the screening pool 100 is provided with a water pump 800, a water suction pipe 801 is in communication between the water pump 800 and the water collecting tank 600, and a water return pipe 802 is in communication between the output end of the water pump 800 and the upper part of the side wall of the feeding bin 101; the scraping plate 402 is a flexible soft plate with a comb-shaped structure.

[0036] The operation process of the embodiment is that when the impurities need to be collected, the impurity particles floating on the water surface are scraped into the discharge chute 403 by starting the conveyor 401 to drive the scraper 402 to rotate, so that the impurities are quickly collected.

[0037] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and use the utility model.

Claims

1. A particle screening device for recycled polyester granules, comprising a screening tank (100); characterized in that: The screening tank (100) is divided into a feeding chamber (101), a separation chamber (102), and a discharge chamber (103) by two partitions. The bottoms of the feeding chamber (101), the separation chamber (102), and the discharge chamber (103) are connected. A baffle (200) is fixedly connected to the upper part of one side of the screening tank (100). A product conveying assembly (300) is provided inside the screening tank (100). An impurity discharge assembly (400) is provided at the top of the separation chamber (102). A water filtration assembly (500) is provided at the bottom of the baffle (200). The product conveying assembly (300) includes a driven roller (301) rotatably connected to the bottom of the feed bin (101) and a drive roller (302) rotatably connected to the inside of the baffle (200). Both the drive roller (302) and the driven roller (301) are connected to a conveyor belt (303). A conveyor motor (304) is fixedly connected to the outside of the baffle (200), and the shaft of the drive roller (302) is fixedly connected to the output end of the conveyor motor (304). The impurity discharge assembly (400) includes a conveyor (401) fixedly connected to the top of the separation chamber (102). Multiple scraper plates (402) are fixedly provided on the outer side of the conveyor belt of the conveyor (401) along the circumferential direction. A discharge trough (403) is fixedly connected to the back of the screening tank (100), and a number of evenly distributed drainage holes are opened at the bottom of the inner cavity of the discharge trough (403).

2. The particle screening device for recycled polyester particles according to claim 1, characterized in that, The water filtration assembly (500) includes a discharge cylinder (501) fixedly connected to the bottom of the baffle (200), and the top of the discharge cylinder (501) is connected to the baffle (200). Multiple drainage holes are evenly opened at the bottom of the discharge cylinder (501). A stacked screw (502) is rotatably connected inside the discharge cylinder (501), and one end of the stacked screw (502) extends through the discharge cylinder (501) to the outside. A discharge motor (503) is fixedly connected to one end of the discharge cylinder (501), and the end of the stacked screw (502) located outside the discharge cylinder (501) is fixedly installed at the output end of the discharge motor (503). A discharge pipe (504) connected to the discharge cylinder (501) is fixedly connected to the bottom of the discharge cylinder (501) near the discharge motor (503).

3. The particle screening device for recycled polyester particles according to claim 1, characterized in that, A water collection tank (600) is fixedly connected to the back of the screening pool (100), and an impurity discharge component (400) is located above the water collection tank (600). A guide channel (700) is fixedly connected to one side of the screening pool (100) where a baffle cover (200) is fixedly installed, and the bottom end of the guide channel (700) is inserted into the interior of the water collection tank (600).

4. The particle screening device for recycled polyester particles according to claim 3, characterized in that, A water pump (800) is installed on the other side of the screening pool (100). A suction pipe (801) is connected between the water pump (800) and the water collection tank (600). A return water pipe (802) is connected between the output end of the water pump (800) and the upper part of the side wall of the feed bin (101).

5. The particle screening device for recycled polyester particles according to claim 1, characterized in that, The feed hopper (101) is internally fixedly connected to a guide plate (101a) perpendicular to the conveyor belt (303).

6. The particle screening device for recycled polyester particles according to claim 1, characterized in that, The conveyor belt (303) has several evenly distributed through holes inside, and multiple horizontal strips are evenly fixed on the outer side of the conveyor belt (303) along the circumferential direction.

7. The particle screening device for recycled polyester granules according to claim 1, characterized in that, The scraper (402) is an elastic soft plate with a comb-like structure.

8. The particle screening device for recycled polyester particles according to claim 1, characterized in that, The liquid filled in the screening pool (100) is saturated saline solution.

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