Screening device for plastics

Abstract

The utility model discloses a screening device for plastics, which relates to the technical field of screening devices for plastics, and comprises a box body, the surface of the box body is fixedly connected with a plurality of support legs through connecting pieces, one end of the box body is provided with a feed port, the surface of the feed port is provided with a pretreatment structure, the bottom of the box body is provided with an air inlet, and the air inlet is provided with a plurality of air outlets. And a second filter screen is mounted above the air inlet. Impurities in polypropylene plastic are removed through the pretreatment structure, the pretreated polypropylene plastic uniformly enters the second filter screen of the box body, and then the polypropylene plastic enters the second filter screen through the cooperation of the air inlet and the first fan and the cooperation of the second fan and the discharge port. Through the arrangement of the first filter screen and the second filter screen, the screened polypropylene plastics can be blown to the corresponding discharge ports so as to realize classified collection, and through the inclined plane design of the third filter screen, the screened polypropylene plastics can be filtered again, so that the filtering quality is improved, and the purity of products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of screening device for plastics, specifically to a screening device for plastics. BACKGROUND

[0002] Plastic is the plasticity abbreviation, with synthetic resin or natural resin as the basic component, can flow into shape or in situ polymerization, solidification and set in the shaping process in a stage, its finished product state is flexible or rigid solid, but not elastomer, the main component of plastic is resin, accounts for 40%~100% of total mass. The nature of resin determines the basic characteristics of plastic, there are many common thermoplastic plastics, such as polypropylene (PP) etc.

[0003] In the production process of plastic, the requirements of production and product performance need to be met, polypropylene (PP) plastic needs to be screened, the purpose is to remove impurities, pollutants, foreign matters and particles of different particle sizes in raw materials, so as to ensure the purity and consistency of plastic raw materials, which is crucial to the quality of the final product, and because polypropylene (PP) is one of the lightest varieties among all existing plastics, so the wind selection screening structure is adopted to screen it.

[0004] At present, when polypropylene (PP) plastic is screened by using the wind selection screening device, the fan needs to be opened to start working, and the wind power should be adjusted according to the particle size and weight of polypropylene plastic, then the raw materials are uniformly put into the device, and the screening of polypropylene (PP) plastic can be completed under the action of the fan.

[0005] When the wind selection screening structure is used to screen polypropylene (PP) plastic, because it only uses wind selection to realize the screening of polypropylene (PP) plastic, the effect of removing fine impurities is limited, which leads to low screening quality, reduces the screening efficiency, and easily affects the subsequent production of polypropylene (PP) plastic. INVENTION CONTENTS

[0006] Therefore, the utility model aims at providing a screening device for plastics to solve the technical problem that when the wind selection screening structure is used to screen polypropylene (PP) plastic, because it only uses wind selection to realize the screening of polypropylene (PP) plastic, the effect of removing fine impurities is limited, which leads to low screening quality, reduces the screening efficiency, and easily affects the subsequent production of polypropylene (PP) plastic.

[0007] To achieve the above object, the utility model provides following technical scheme: A screening device for plastics, including the box, the surface of the box is fixedly connected with a plurality of supporting legs through connecting pieces, the one end of box is provided with the feed port, and the feed port surface is provided with pretreatment structure, the bottom of box is provided with the air inlet, and the second filter screen is installed above the air inlet, the bottom of box is installed with first fan, and the air outlet of first fan is matched with the air inlet, a plurality of second fans are installed on both sides of the box, the opposite side of each second fan of the box is provided with the discharge port matched with the second fan, one end of the discharge port is fixedly connected with the fixed block, the bottom of fixed block is fixedly connected with the third filter screen, the third filter screen is provided as inclined plane structure, and the one end of third filter screen close to the box is high.

[0008] Through the above technical scheme, the design of pretreatment structure can remove the impurities in polypropylene (PP) plastics, which can improve the efficiency of subsequent screening, and the polypropylene (PP) plastics after pretreatment can uniformly enter the second filter screen of the box, and the cooperation of the air inlet and the first fan can produce wind force to blow the PP plastic particles upward, so that they are suspended in the air and reach different heights according to the weight difference, and the design of the second fan and the discharge port can blow the screened polypropylene (PP) plastics to the corresponding discharge port to realize classification and collection, wherein the inclined design of the third filter screen can make the screened polypropylene (PP) plastics slide into the fixed block, and the filtered polypropylene (PP) plastics can improve the filtering quality and the purity of the product, and the structure can improve the filtering efficiency and quality through multiple filtering, which is convenient for subsequent processing and use.

[0009] The utility model further sets up, the pretreatment structure includes connecting block, first filter screen, spring, motor and cam, one end of feed port is fixedly connected with connecting block, first filter screen is movably connected in connecting block, and the side hinge connection of first filter screen is in one end of box, connecting block and first filter screen are connected through a group of springs, the top of connecting piece is installed with motor, the output of motor is connected with cam through shaft, and the surface of cam is in contact with the bottom of first filter screen.

[0010] Through the above technical scheme, starting the motor drives the cam to rotate, so that the first filter screen vibrates through the cam and the spring, which can separate the impurities adhered to the surface of polypropylene (PP) plastics, and make the dust and small impurities in the polypropylene (PP) plastics fly, which is convenient for better screening of polypropylene (PP) plastics, so that the screening efficiency and quality can be improved.

[0011] The utility model further sets up, the cavity is arranged in the top of connecting block, and a plurality of holes are arranged in the bottom of cavity, the top of cavity is connected with dust collection device through connecting pipe, the dust collection device is installed the top of connecting block.

[0012] Through the above technical scheme, the dust and small impurities in the polypropylene (PP) plastic are made to fly through the vibration of the first filter screen, so that the dust and small impurities can be sucked away by the dust collection device through the holes, the cavity and the connecting pipe, thereby reducing the dust and small impurities in the polypropylene (PP) plastic, and improving the screening quality of the polypropylene (PP) plastic in the subsequent process, and keeping the working environment clean.

[0013] The utility model further sets up, the recess is arranged in each fixed block, the receiving drawer that is combined with the recess is connected with the sliding in each recess, and the opening of each receiving drawer is located below the third filter screen.

[0014] Through the above technical scheme, the design of the receiving drawer can collect the impurities generated when the polypropylene (PP) plastic screened by the third filter screen is filtered again, and facilitate the centralized treatment of the impurities.

[0015] The utility model further sets up, the limit slot is arranged on both sides of each recess, the limit block that is combined with the limit slot is connected with the sliding in each limit slot, and each group of limit blocks are fixedly connected on both sides of the corresponding receiving drawer.

[0016] Through the above technical scheme, the design of the limit slot and the limit block can ensure the stability of the receiving drawer in the sliding process, avoid the falling or damage caused by shaking or misplacement, and ensure the smooth sliding of the receiving drawer.

[0017] The utility model further sets up, the mesh size of the third filter screen surface gradually reduces with the increase of height.

[0018] Through the above technical scheme, in the process of screening, the heavier particles will deposit in the lower position, and the lighter particles will rise to the higher position, so with the increase of height, the particle size will generally gradually reduce, and when the mesh size of the third filter screen 10 surface gradually reduces with the increase of height, it is convenient to filter the polypropylene (PP) plastic screened again, thereby improving the filtering quality and efficiency.

[0019] The utility model further sets up, the visual window is arranged on one side of the box body, and the operation panel is arranged on the same side of the box body.

[0020] Through adoption of the above technical scheme, the design of the visual window enables the operator to conveniently observe the screening process and timely adjust the equipment parameters, thereby ensuring the screening effect, and meanwhile, the design of the operation panel facilitates the control of the screening device, thereby increasing the convenience of operation.

[0021] In summary, the utility model mainly has the following beneficial effects:

[0022] The utility model discloses a pretreatment structure is removed to the impurity in polypropylene (PP) plastics first, and the polypropylene (PP) plastics after pretreatment evenly enters the second filter screen on the box body, can produce wind force through the cooperation of air inlet and first fan, and the PP plastic particles are blown upward, make them suspend in the air, and reach different height according to weight difference, and then through the design of second fan and discharge port, the polypropylene (PP) plastics after screening can be blown to the corresponding discharge port to realize classification collection, wherein the inclined surface design of third filter screen can make the polypropylene (PP) plastics after screening enter fixed block and can slide, and is filtered again in the sliding process, convenient to improve the quality of filtration, thereby improving the purity of product, and the structure can improve the filtering efficiency and quality through multiple filtration, and is convenient for better processing and use subsequently. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0024] Figure 2 It is the three-dimensional structure section view of the utility model;

[0025] Figure 3 It is the pretreatment structure schematic diagram of the utility model;

[0026] Figure 4 It is the pretreatment structure section view of the utility model;

[0027] Figure 5 It is the discharge structure detail view of the utility model;

[0028] Figure 6 It is the utility model Figure 4 It is the structure enlarged view of A place in the utility model.

[0029] In the diagram: 1. Box body; 2. Support leg; 3. Feed inlet; 4. Pre-treatment structure; 401. Connecting block; 402. First filter screen; 403. Spring; 404. Motor; 405. Cam; 406. Dust collection device; 407. Connecting pipe; 408. Cavity; 409. Hole; 5. First fan; 6. Air inlet; 7. Second filter screen; 8. Second fan; 9. Fixing block; 10. Third filter screen; 11. Groove; 12. Storage drawer; 13. Limiting groove; 14. Limiting block; 15. Viewing window; 16. Operation panel; 17. Discharge port; 18. Connecting piece. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The embodiments of this utility model will be described below based on its overall structure.

[0032] A screening device for plastics, such as Figures 1-6 As shown, the device includes a housing 1. Several support legs 2 are fixedly connected to the surface of the housing 1 via connectors 18, which can support the housing 1. A viewing window 15 is provided on one side of the housing 1, allowing the operator to easily observe the screening process and adjust the equipment parameters in a timely manner to ensure the screening effect. An operation panel 16 is provided on the same side of the housing 1 for easy control of the screening device, increasing the convenience of operation. At the same time, a feed inlet 3 is provided at one end of the housing 1, and a pretreatment structure 4 is provided on the surface of the feed inlet 3, which can treat the polypropylene (PP) plastic entering the housing 1, thereby reducing the burden of subsequent screening and improving the overall screening efficiency.

[0033] The pre-treatment structure 4 comprises a connecting block 401, a first filter screen 402, springs 403, a motor 404, and a cam 405. The connecting block 401 is fixedly connected to one end of the feed inlet 3. The first filter screen 402 is movably connected in the connecting block 401 and hingedly connected to one end of the box body 1. The top of the connecting piece 18 is provided with the motor 404. The output end of the motor 404 is connected with the cam 405 through a shaft. The surface of the cam 405 is in contact with the bottom of the first filter screen 402. The motor 404 is started to drive the cam 405 to rotate, thereby continuously pushing the bottom of the first filter screen 402 upward, so that the first filter screen 402 is vibrated to separate the impurities adhered to the surface of the polypropylene (PP) plastic, thereby realizing the pre-treatment of the polypropylene (PP) plastic. The connecting block 401 and the first filter screen 402 are connected through a group of springs 403, so that the stability of the first filter screen 402 can be maintained when the first filter screen 402 is vibrated, thereby facilitating the pre-treatment of the polypropylene (PP) plastic.

[0034] Meanwhile, a cavity 408 is arranged in the top of the connecting block 401. A plurality of holes 409 are arranged in the bottom of the cavity 408. The top of the cavity 408 is connected with a dust collection device 406 through a connecting pipe 407. The dust collection device 406 is arranged on the top of the connecting block 401. When the first filter screen 402 is vibrated, the dust and small impurities flying in the polypropylene (PP) plastic can be sucked away by the dust collection device 406 through the holes 409, the cavity 408 and the connecting pipe 407, thereby reducing the dust and small impurities in the polypropylene (PP) plastic, improving the screening quality of the polypropylene (PP) plastic and keeping the working environment clean.

[0035] Then the bottom of the box 1 is provided with an air inlet 6, and the second filter screen 7 is installed above the air inlet 6, the bottom of the box 1 is provided with the first fan 5, and the air outlet of the first fan 5 is matched with the air inlet 6, so that when the pretreated polypropylene (PP) plastic uniformly enters above the second filter screen 7, the wind power generated by the first fan 5 blows the PP plastic particles upward, so that they are suspended in the air and reach different heights according to the weight difference, and a plurality of second fans 8 are installed on both sides of the box 1, and the box 1 is provided with a discharge port 17 matched with the second fan 8 on the side opposite to each second fan 8, then the polypropylene (PP) plastic at different height positions is blown into the corresponding discharge port 17 through the cooperation of the second fan 8 and the discharge port 17, so as to realize separation, and one end of the discharge port 17 is fixedly connected with the fixed block 9, the bottom of the fixed block 9 is fixedly connected with the third filter screen 10, the third filter screen 10 is provided as an inclined surface structure, and the end of the third filter screen 10 close to the box 1 is high, so that after the screened polypropylene (PP) plastic enters the discharge port 17, it can slide outward through the inclined surface structure of the third filter screen 10, and during the sliding process, it can be filtered again through the mesh on the surface of the third filter screen 10, so as to improve the filtering quality and improve the purity of the product, and the structure can improve the filtering efficiency and quality through multiple filtering, so as to better process and use it subsequently.

[0036] Further, each fixed block 9 is provided with a groove 11, each groove 11 is slidably connected with a receiving drawer 12 matched with the groove 11, so that the receiving drawer 12 can slide in the groove 11, and a damping structure is arranged at the connection between the groove 11 and the receiving drawer 12, and the opening of each receiving drawer 12 is located below the corresponding third filter screen 10, so that the impurities generated when the screened polypropylene (PP) plastic is filtered again through the third filter screen 10 can be collected by the receiving drawer 12, and the impurities can be conveniently treated, wherein a limiting groove 13 is arranged on both sides of each groove 11, a limiting block 14 matched with the limiting groove 13 is slidably connected in each limiting groove 13, and each group of limiting blocks 14 is fixedly connected on both sides of the corresponding receiving drawer 12. The limiting groove 13 and the limiting block 14 can increase the stability of the receiving drawer 12 when sliding, so as to better pull and move the receiving drawer 12 in the fixed block 9.

[0037] In the embodiment, the mesh size of the third filter screen 10 gradually decreases with the increase of the height, and in the screening process of the polypropylene (PP) plastic, since the heavier particles will deposit at the lower position and the lighter particles will rise to the higher position, the particle size will generally gradually decrease with the increase of the height, so that when the mesh size of the third filter screen 10 gradually decreases with the increase of the height, the screened polypropylene (PP) plastic can be prevented from falling through the surface mesh of the third filter screen 10, thereby affecting the filtering effect of the screened polypropylene (PP) plastic.

[0038] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and changes of the embodiments without creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A screening device for plastics, comprising a box (1), the surface of which is fixedly connected with several legs (2) by means of connecting pieces (18), characterized in that: The box (1) is provided with an inlet (3) at one end, and the surface of the inlet (3) is provided with a pretreatment structure (4), the bottom of the box (1) is provided with an air inlet (6), and a second filter screen (7) is installed above the air inlet (6), the bottom of the box (1) is provided with a first fan (5), and the air outlet of the first fan (5) is matched with the air inlet (6), a plurality of second fans (8) are installed on both sides of the box (1), the box (1) is provided with a discharge port (17) matched with the second fan (8) on the side opposite to each second fan (8), one end of the discharge port (17) is fixedly connected with a fixed block (9), the bottom of the fixed block (9) is fixedly connected with a third filter screen (10), the third filter screen (10) is provided as an inclined surface structure, and the third filter screen (10) is high near one end of the box (1).

2. The screening device for plastics according to claim 1, characterized in that: The pretreatment structure (4) comprises a connecting block (401), a first filter screen (402), a spring (403), a motor (404) and a cam (405), one end of the inlet (3) is fixedly connected with the connecting block (401), the connecting block (401) is movably connected with the first filter screen (402), and one side of the first filter screen (402) is hingedly connected to one end of the box (1), the connecting block (401) and the first filter screen (402) are connected by a group of springs (403), the top of the connecting piece (18) is provided with a motor (404), the output end of the motor (404) is connected with a cam (405) through a shaft, and the surface of the cam (405) is in contact with the bottom of the first filter screen (402).

3. The screening device for plastics according to claim 2, characterized in that: The connecting block (401) is provided with a cavity (408) in the top, and the bottom of the cavity (408) is provided with a plurality of holes (409), the top of the cavity (408) is connected with a dust collection device (406) through a connecting pipe (407), and the dust collection device (406) is installed on the top of the connecting block (401).

4. The screening device for plastics according to claim 1, characterized in that: Each of the fixed blocks (9) is provided with a groove (11), each of the grooves (11) is slidably connected with a storage drawer (12) matched with the groove (11), and the opening of each of the storage drawers (12) is located below the corresponding third filter screen (10).

5. The screening device for plastics according to claim 4, characterized in that: Each of the grooves (11) is provided with a limiting groove (13) on both sides, each of the limiting grooves (13) is slidably connected with a limiting block (14) matched with the limiting groove (13), and each group of limiting blocks (14) is fixedly connected on both sides of the corresponding storage drawer (12).

6. The screening device for plastics according to claim 1, characterized in that: The mesh size of the surface of the third filter screen (10) gradually decreases with the increase of the height.

7. The screening device for plastics according to claim 1, characterized in that: The box (1) is provided with a visual window (15) on one side, and an operation panel (16) is arranged on the same side of the box (1).

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