CN108890923B

CN108890923B - Waste plastic recycling system

Info

Publication number: CN108890923B
Application number: CN201810831890.9A
Authority: CN
Inventors: 羊凌峰
Original assignee: Jieyang Baoying Industrial Co ltd
Current assignee: Jieyang BAOYING Industrial Co.,Ltd.
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2021-03-26
Anticipated expiration: 2038-07-26
Also published as: CN108890923A

Abstract

The invention discloses a waste plastic recycling system, which comprises a crushing device, a recycling device and a recycling device, wherein the crushing device is used for crushing waste plastics; the mixing device is used for uniformly mixing the crushed waste plastic and the ABS plastic; the hot melting device is used for melting and plasticizing the mixed plastic raw materials; an injection molding device; the feeding chamber is used for conveying the melted and plasticized plastic raw materials to an injection molding device for injection molding; and the impurity removal component is arranged in the feeding chamber and is used for filtering the materials conveyed by the feeding chamber to remove impurities in the plastic raw materials. The invention can filter and remove impurities in the molten plastic, thereby effectively avoiding the impurities in the injection molded product and ensuring that the injection molded product has good quality; secondly, the impurity removal component is arranged in the feeding chamber, so that impurity removal operation on the molten plastic can be realized in the feeding process, the processing time is shortened, and the working efficiency is improved.

Description

Waste plastic recycling system

Technical Field

The invention belongs to the technical field of resource recycling, and particularly relates to a waste plastic recycling system.

Background

For longer storage, many plastic crafts have appeared in the prior art. Secondly, in order to improve the resource utilization rate, the situation that a new handicraft is prepared after waste plastics, waste plastic handicraft and the like are reprocessed begins to appear, so that the waste of resources is reduced. The existing treatment of waste plastic garbage is generally as follows: the waste plastic is crushed and then mixed with the ABS plastic raw material for injection molding processing, so that the use of the ABS plastic raw material in the injection molding process is reduced, and the resource waste is reduced.

Under this kind of mode, can have more impurity in the discarded plastics usually, some tiny impurity is not got rid of totally in screening, crushing process of earlier stage, and then mixes and the melting back with ABS plastic materials, exists impurity in the molten plastic materials easily, and then influences the quality of the handicraft that the moulding plastics obtained.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the waste plastic recycling system which can effectively remove impurities in the molten plastic raw materials and improve the quality of injection molding products.

In order to achieve the purpose, the invention adopts the following technical scheme: a waste plastic recycling system comprises

The crushing device is used for crushing the waste plastics;

the mixing device is used for uniformly mixing the crushed waste plastic and the ABS plastic;

the hot melting device is used for melting and plasticizing the mixed plastic raw materials;

an injection molding device;

the feeding chamber is used for conveying the melted and plasticized plastic raw materials to an injection molding device for injection molding;

and the impurity removal component is arranged in the feeding chamber and is used for filtering the materials conveyed by the feeding chamber to remove impurities in the plastic raw materials.

According to the invention, through the arrangement of the impurity removing part, impurities in the molten plastic are filtered and removed, so that the impurities in the injection molded product are effectively avoided, and the injection molded product is ensured to have good quality; secondly, the edulcoration part is located in the pay-off room, and then just can realize the edulcoration operation to the melting plastics at the in-process of pay-off, need not to carry out in addition the edulcoration process, reduces manufacturing procedure, shortens long when processing, improves work efficiency.

Furthermore, the injection molding device comprises an upper die, a lower die, a die cavity arranged on the lower die, an injection molding channel communicated with the die cavity, and an injection molding opening which is arranged on the upper die and can be communicated with the injection molding channel; the discharge hole of the feeding chamber is communicated with the injection molding hole; the molten plastic after impurity removal is directly conveyed into the mold cavity through the injection molding opening and the injection molding channel, and the processing efficiency is high.

Furthermore, the feeding chamber comprises a shell, a movable plate which can move up and down and is arranged in the shell, a driving piece for driving the movable plate to move and a feeding pipe; the interior of the shell is divided into a driving cavity and a filtering cavity by a movable plate, and the impurity removing part is arranged in the filtering cavity; through reciprocating of fly leaf for the pressure in the filter chamber changes, when the fly leaf moved down, can pressurize the molten plastics on the edulcoration part, accelerates the speed that molten plastics passed through the edulcoration part, and then avoids the setting of edulcoration part to cause the influence to the velocity of flow of molten plastics, and then under the realization carries out good filterable condition to molten plastics, the velocity of flow that still can realize molten plastics is unchangeable, and work efficiency can not receive the influence.

Further, the impurity removing component comprises a first impurity removing plate, a second impurity removing plate and a third impurity removing plate which are distributed from top to bottom, wherein a first sieve hole is formed in the first impurity removing plate, a second sieve hole is formed in the second impurity removing plate, and a third sieve hole is formed in the third impurity removing plate; the aperture of the first sieve pore is larger than that of the second sieve pore, and the aperture of the second sieve pore is larger than that of the third sieve pore; through the arrangement of the multiple layers of impurity removing plates, the molten plastic is better filtered and impurity removed, impurities are filtered completely, and the impurity residual rate is low; secondly, because the sieve mesh size of removing miscellaneous board reduces for in proper order, and then compares and sets up the less miscellaneous board of removing of three-layer sieve mesh, removes miscellaneous board and can not cause too big influence to the flow velocity of molten plastics, has further improved machining efficiency.

Furthermore, a feed port communicated with the feed pipe is arranged on the shell, and the feed port is arranged below the movable plate; and preferably the fly leaf moves down the time can not remove to the position that surpasss the feed inlet place, and then guarantees that the material of carrying in the pay-off room via the feed inlet is all sent into to the filter chamber, can not make the material enter into the drive intracavity because the fly leaf excessively moves down, avoids the material of drive intracavity can't discharge and pile up in it.

Furthermore, a homogenizing device is arranged in the filtering cavity corresponding to the lower part of the third impurity removing plate, and the homogenizing device can stir materials flowing through the homogenizing device in the process that the movable plate moves up and down; the stirring of the molten plastic in the feeding process is realized, so that the recovered plastic in the molten plastic and the ABS plastic raw material can be more fully mixed, the uniformity of the molten plastic raw material is improved, and the quality of a product obtained by later injection molding is further improved; and the drive to the homogeneity device is realized through reciprocating of fly leaf, reduces the input of electrical part, practices thrift the energy consumption, and the fault rate also can obtain the reduction of very big degree.

Further, the homogenizing device comprises a first impeller, a rotating shaft connected with the impeller, a second impeller arranged on the rotating shaft and a driving part for driving the second impeller to rotate so as to drive the first impeller to rotate; first impeller can stir melting plastics in the direction perpendicular with melting plastics flow direction when rotating, and then adopts the mode of cuting to stir the material, and stirring effect is good, and melting plastics's homogeneity is effectual.

Furthermore, the driving part comprises a cylindrical mounting chamber with a hollow interior, two supporting arms connected with the mounting chamber, two gas storage cavities arranged on the side wall of the filter cavity, a gas channel arranged on the supporting arms and used for communicating the mounting chamber with the gas storage cavities, a gas guide pipe used for communicating the driving cavity with one of the gas storage cavities, and an air bag connected with the other gas storage cavity; the second impeller is arranged in the mounting chamber; when the movable plate moves upwards, the materials are sucked into the filtering cavity, the gas in the driving cavity is extruded outwards, the materials are conveyed to the gas storage cavity through the gas guide pipe and conveyed to the gas bag, and in the conveying process, the second impeller rotates under the impact of gas flow so as to drive the first impeller to rotate and stir the materials; when the movable plate moves downwards, the materials in the filter cavity are extruded downwards and quickly pass through the impurity removing plate; the volume of the driving cavity is increased, so that the gas stored in the air bag is conveyed into the driving cavity, and in the conveying process, the second impeller rotates in the reverse direction under the impact of the gas to drive the first impeller to rotate in the reverse direction, and the materials are stirred in the same way; thereby through the cooperation between installation room, gas storage chamber, the gasbag, guarantee that the fly leaf all can arouse the air current to flow through the atmospheric pressure change in the drive intracavity when upwards or the lapse, and then drive the rotation of first impeller of second impeller drive, guarantee the pay-off in-process, first impeller remains the pivoted state all the time, further improves the homogeneity effect.

Furthermore, the mounting chamber comprises a cylinder body and an end cover fixedly connected with the cylinder body, a through hole for the rotating shaft to pass through is formed in the end cover, and a sealing element in sealing fit with the rotating shaft is arranged on the inner wall of the through hole; the assembly is easy and simple to handle, and the setting up of sealing member makes the part that the end cover was worn out to the pivot the condition that gas leakage can not appear, avoids in gaseous entering the melting plastics to the pay-off indoor, places and has the bubble in the material, further improves the quality of the product that obtains behind the later stage injection moulding processing.

In summary, the invention has the following advantages: impurities in the molten plastic can be filtered and removed, so that the impurities in the injection molded product are effectively avoided, and the injection molded product is ensured to have good quality; secondly, the edulcoration part is located in the pay-off room, and then just can realize the edulcoration operation to the melting plastics at the in-process of pay-off, need not to carry out in addition the edulcoration process, reduces manufacturing procedure, shortens long when processing, improves work efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the injection molding apparatus according to the present invention.

FIG. 3 is a schematic view of the feed chamber of the present invention.

Fig. 4 is an enlarged view of a portion a in fig. 3.

FIG. 5 is a schematic sectional view of a part of a homogenizing device according to the present invention.

Fig. 6 is an enlarged view at B in fig. 3.

Fig. 7 is a top view of the movable plate of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-7, a waste plastic recycling system comprises a crushing device 1, a mixing device 2, a hot melting device 3, an injection molding device, a feeding chamber 4, an impurity removing part and a homogenizing device, wherein the crushing device 1 is a roller crusher directly purchased from the market, and the structure is not repeated and is used for crushing waste plastics; the mixing device 2 is a mixer directly purchased from the market, and the structure is not repeated, and is used for uniformly mixing the crushed waste plastic and the ABS plastic; the hot melting device 3 is a screw injection molding machine directly purchased from the market and used for melting and plasticizing the mixed plastic raw materials; the injection molding device comprises an upper die 51, a lower die 52, a die cavity 53 arranged on the lower die, an injection molding channel 54 communicated with the die cavity and an injection molding port 55, wherein the lower die can move up and down relative to the upper die, the injection molding port 55 is arranged on the upper die, and the injection molding port 55 can be communicated with the injection molding channel when the upper die and the lower die are closed; and a discharge port of the feeding chamber 4 is communicated with the injection molding port 55, so that the melted and plasticized plastic raw material is conveyed to the injection molding port and then conveyed to the injection molding cavity from the injection molding port for injection molding.

Specifically, the feeding chamber 4 comprises a housing 41, a movable plate 42, a driving member 43 and a feeding pipe 44; the housing 41 is made of stainless steel and has a cylindrical structure, the movable plate 42 is also made of stainless steel, the interior of the housing 41 is divided into a driving cavity 411 and a filtering cavity 412 by the movable plate, and the impurity removing part is arranged in the filtering cavity 412; a sealing ring is arranged on the outer wall of the movable plate 42, and the movable plate 42 is in sealing fit with the inner wall through the sealing ring; the driving member 43 is a commercially available hydraulic rod, and the movable plate 42 is driven by the hydraulic rod to move up and down in the housing, so as to change the pressure in the driving chamber 411 and the pressure in the filtering chamber 412; the feeding pipe 44 is connected with the hot melting device 3, and a circular feeding hole 413 is formed in the shell 41 and is communicated with the feeding pipe; preferably, the position of the feeding hole 413 is correspondingly arranged at a position below the movable plate 42 to prevent the material from entering into the driving cavity.

The impurity removing part is used for filtering the material conveyed by the feeding chamber 4 to remove impurities in the plastic raw material; specifically, the impurity removing part comprises a first impurity removing plate 61, a second impurity removing plate 62 and a third impurity removing plate 63 which are distributed from top to bottom, and a clamping groove for positioning the first impurity removing plate, the second impurity removing plate and the third impurity removing plate is arranged in the shell; a first sieve hole is formed in the first impurity removing plate 61, a second sieve hole is formed in the second impurity removing plate 62, and a third sieve hole is formed in the third impurity removing plate 63; and preferably, the aperture of the first sieve pore is larger than that of the second sieve pore, and the aperture of the second sieve pore is larger than that of the third sieve pore.

The homogenizing device is arranged below the third impurity removing plate 63 and can stir the materials flowing through the homogenizing device in the process that the movable plate 42 moves up and down; the homogenizing device comprises a first impeller 71, a rotating shaft 72, a second impeller 73 and a driving part; the rotating shaft 72 is fixedly connected to the upper part of the rotating shaft 72, and the second impeller 73 is fixedly connected to the lower part of the rotating shaft 72; the driving part is used for driving the second impeller 73 to rotate so as to drive the first impeller 71 to rotate; the driving part comprises an installation chamber 81, two supporting arms 82, two air storage cavities 83, an air channel 84, an air duct 85 and an air bag 86; the mounting chamber 81 is made of stainless steel and has a hollow cylindrical structure; the two air storage cavities 83 are stacked left and right on the side wall of the filter cavity, and the two support arms 82 are fixedly connected to the left side and the right side of the installation chamber respectively; the gas channel 84 is arranged in the supporting arm, one end of the supporting arm is connected with the installation chamber, the other end of the supporting arm is connected with the inner wall of the filter cavity, so that the installation chamber and the gas storage cavities are communicated through the gas channel 84, one end of the gas guide pipe 85 is communicated with the driving cavity, the other end of the gas guide pipe is connected with one of the two gas storage cavities, and then gas in the driving cavity can be conveyed into the gas storage cavities; the air bag 86 is in communication with the other of the two air reservoirs which are in turn in communication through an air passage, so that the air in the drive chamber can be delivered into the air bag 86 for temporary storage by the air bag.

The second impeller 73 is positioned in the mounting chamber 81 and can be driven to rotate by impacting the second impeller through gas entering the mounting chamber through the gas storage cavity; preferably, the installation chamber 81 includes a cylinder 811 with an opening at the upper part and an end cover 812 fixedly connected with the opening at the upper part of the cylinder by welding, a through hole for the rotating shaft 72 to pass through is arranged at the middle position of the end cover 812, a sealing member 813 hermetically matched with the rotating shaft 72 is arranged on the inner wall of the through hole, the sealing member is preferably a rubber ring, and the gas in the installation chamber is effectively prevented from leaking outwards from the through hole.

Preferably, the movable plate 42 is provided with a movable scraping component, and the movable scraping component comprises a first arc-shaped scraping plate 91, a second arc-shaped scraping plate 92, a first connecting structure connected to the movable plate 42 and used for enabling the first arc-shaped scraping plate 91 to be capable of being turned over up and down, and a second connecting structure used for enabling the second arc-shaped scraping plate 92 to be turned over up and down relative to the movable plate 42; the first scraper plate and the second scraper plate are both made of plastics and have certain deformability; the first connecting structure comprises a connecting seat 93, a connecting groove 94 and a torsion spring 95, wherein the connecting seat 93, the connecting groove 94 and the torsion spring 95 are arranged on the side wall of the first arc-shaped scraper 91, the connecting groove 94 is arranged on the side wall of the movable plate, the connecting seat 93 is rotatably arranged in the connecting groove 94, the torsion spring 95 is sleeved on the connecting seat, one end of the torsion spring 95 is fixedly connected with the connecting seat, and the other end of the torsion spring 95 is; when the first arc-shaped scraper is turned over, the torsion spring deforms; the other side of the first arc-shaped scraper 91 is provided with rubber 96; the specific structure of the second connecting structure is the same as that of the first connecting structure, and is not described again; under this kind of structure, the in-process that the fly leaf moved down, first, second arc scraper blade will overturn downwards to will glue and strike off the material that covers on the drive chamber 411 inner wall, avoid the material to cause the hindrance to the removal of fly leaf 42 after solidifying on the inner wall.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a waste plastic recycling system which characterized in that: comprises that

The crushing device (1) is used for crushing the waste plastics;

the mixing device (2) is used for uniformly mixing the crushed waste plastic and the ABS plastic;

the hot melting device (3) is used for melting and plasticizing the mixed plastic raw materials;

an injection molding device;

the feeding chamber (4) is used for conveying the melted and plasticized plastic raw materials to an injection molding device for injection molding;

the impurity removal component is arranged in the feeding chamber (4) and is used for filtering the materials conveyed by the feeding chamber (4) to remove impurities in the plastic raw materials;

the injection molding device comprises an upper die (51), a lower die (52), a die cavity (53) arranged on the lower die, an injection molding channel (54) communicated with the die cavity and an injection molding opening (55) arranged on the upper die and communicated with the injection molding channel; the discharge hole of the feeding chamber (4) is communicated with the injection molding hole (55);

the feeding chamber (4) comprises a shell (41), a movable plate (42) which can move up and down and is arranged in the shell, a driving piece (43) for driving the movable plate to move and a feeding pipe (44); the interior of the shell (41) is divided into a driving cavity (411) and a filtering cavity (412) by a movable plate, and the impurity removing part is arranged in the filtering cavity (412);

the movable scraping component is arranged on the movable plate (42) and comprises a first arc-shaped scraping plate (91), a second arc-shaped scraping plate (92), a first connecting structure which is used for enabling the first arc-shaped scraping plate (91) to be connected to the movable plate (42) in a vertically-overturning mode, and a second connecting structure which is used for enabling the second arc-shaped scraping plate (92) to be vertically overturned relative to the movable plate (42);

the impurity removing component comprises a first impurity removing plate (61), a second impurity removing plate (62) and a third impurity removing plate (63) which are distributed from top to bottom, a first sieve hole is formed in the first impurity removing plate (61), a second sieve hole is formed in the second impurity removing plate (62), and a third sieve hole is formed in the third impurity removing plate (63); the aperture of the first sieve pore is larger than that of the second sieve pore, and the aperture of the second sieve pore is larger than that of the third sieve pore;

a feed inlet (413) communicated with the feed pipe is formed in the shell (41), and the feed inlet (413) is formed in the position below the movable plate (42);

a homogenizing device is arranged in the filter cavity (412) and corresponds to the lower part of the third impurity removing plate (63), and the homogenizing device can stir materials flowing through the homogenizing device in the process that the movable plate (42) moves up and down;

the homogenizing device comprises a first impeller (71), a rotating shaft (72) connected with the first impeller (71), a second impeller (73) arranged on the rotating shaft and a driving part for driving the second impeller (73) to rotate so as to drive the first impeller (71) to rotate;

the driving part comprises a cylindrical mounting chamber (81) with a hollow inner part, two supporting arms (82) connected with the mounting chamber, two air storage cavities (83) arranged on the side wall of the filter cavity, an air channel (84) arranged on the supporting arms and used for communicating the mounting chamber with the air storage cavities, an air guide pipe (85) used for communicating the driving cavity with one of the air storage cavities, and an air bag (86) connected with the other air storage cavity; the second impeller (73) is arranged in the mounting chamber (81);

the mounting chamber (81) comprises a cylinder body (811) and an end cover (812) fixedly connected with the cylinder body, a through hole for the rotating shaft (72) to pass through is formed in the end cover (812), and a sealing element (813) in sealing fit with the rotating shaft (72) is arranged on the inner wall of the through hole.