CN113370418A - Multi-functional modified plastics granulation is with screening dust collector - Google Patents

Abstract

The invention discloses a screening and dust removing device for multifunctional modified plastic granulation, which comprises a machine body shell, an upper end cover and a screening frame body, wherein the upper end cover is fixedly arranged at the upper end of the machine body shell, the screening frame body is arranged in the machine body shell, a grading sieve is arranged at the bottom of the screening frame body, limiting parts are symmetrically arranged on two sides of the outer wall of the grading sieve, and a plurality of groups of damping springs are connected between the limiting parts and the inner side wall of the machine body shell; the lower terminal surface of upper end cover is equipped with the mounting groove, and the level is provided with reciprocal lead screw in the mounting groove, and the outer wall screw thread of reciprocal lead screw has cup jointed the carriage release lever, and the fixed cleaning framework that is provided with in bottom of carriage release lever. The invention overcomes the defects of the prior art, has reasonable design, can screen the modified plastic particles with multiple particle sizes, is convenient for bagging and collecting, can remove dust and adsorb generated dust, purifies the air environment, and has higher social use value and application prospect.

Description

Multi-functional modified plastics granulation is with screening dust collector

Technical Field

The invention relates to the technical field of production and processing of modified plastics, in particular to a multifunctional screening and dedusting device for granulation of modified plastics.

Background

The modified plastic is a plastic product which is processed and modified by methods such as filling, blending, reinforcing and the like on the basis of general plastics and engineering plastics and has improved performances such as flame retardance, strength, impact resistance, toughness and the like.

The plastic granulating process comprises the following steps: the molten polymer is extruded from a die, cooled by a horizontally arranged cooling water tank into plastic strips, cut into granules by a rotating knife, taken out of a granulating chamber by a temperature-regulated water and fed into a centrifugal drier, and the granules are subjected to moisture removal by the centrifugal drier.

Granules obtained by plastic granulation are often different in size and are larger or smaller, and meanwhile, the air environment is influenced due to the fact that impurities such as dust are attached to the outer walls of the plastic granules;

therefore, the inventor aims to provide a multifunctional screening and dedusting device for modified plastic granulation, which can screen and remove dust from obtained granules so as to achieve the purpose of higher practical value, with the experience of design development and actual manufacturing which are abundant in the related industry for years, and research and improvement are carried out aiming at the existing structure and deficiency.

Disclosure of Invention

In order to solve the problems mentioned in the background technology, the invention provides a screening and dedusting device for multifunctional modified plastic granulation.

In order to achieve the purpose, the invention adopts the following technical scheme:

a screening and dedusting device for multifunctional modified plastic granulation comprises a machine body shell, an upper end cover and a screening frame body, wherein the upper end cover is fixedly arranged at the upper end of the machine body shell, the screening frame body is arranged in the machine body shell, a grading screen is arranged at the bottom of the screening frame body, limiting parts are symmetrically arranged on two sides of the outer wall of the grading screen, and a plurality of groups of damping springs are connected between the limiting parts and the inner side wall of the machine body shell;

the lower terminal surface of upper end cover is equipped with the mounting groove, and the level is provided with reciprocal lead screw in the mounting groove, and the outer wall screw thread of reciprocal lead screw has cup jointed the carriage release lever, and the fixed cleaning framework that is provided with in bottom of carriage release lever.

Preferably, the inner bottom of the machine body shell is provided with a first partition plate and a second partition plate, and the first partition plate and the second partition plate divide the interior of the machine body shell into a first collecting cavity, a second collecting cavity and a third collecting cavity in sequence;

a first guide plate is obliquely arranged in the first collecting cavity, one end of the first guide plate is connected with a first partition plate, and a first filter screen is arranged in the first partition plate from the connection part to the upper part;

a second guide plate is obliquely arranged in the second collecting cavity, one end of the second guide plate is connected with a second partition plate, and a second filter screen is arranged in the second partition plate from the part at the joint upwards.

Preferably, the classifying screen comprises a first screen, a second screen and a third screen, the first screen, the second screen and the third screen are connected through a barrier strip, and the aperture of the screen in the first screen, the second screen and the third screen is gradually enlarged from the first screen to the third screen.

Preferably, the up end of first baffle and second baffle is equipped with the joint strip respectively, and the joint strip extends to the separation strip, and the bottom of separation strip is equipped with the spacing recess that is used for joint strip joint, and the up end of joint strip is equipped with the ball.

Preferably, the limiting part comprises two symmetrical limiting movable blocks, a limiting support rod penetrates between the two limiting movable blocks, the limiting support rod is arranged in the movable groove, and springs are sleeved on the outer walls of the two ends of the limiting support rod respectively.

Preferably, two symmetrical movable rods are arranged on one side, away from the damping spring, of the screening frame body, and a first wedge block is arranged at the end, extending outwards, of the movable rod, penetrating through the side wall of the machine body shell;

the lateral wall of engine body shell is provided with the motor of two symmetries, and the motor is connected with the carousel through the pivot, and the circumference lateral wall of carousel evenly encircles and is equipped with a plurality of groups second and contracts the piece, and the inclined plane of second contract the piece laminates with the inclined plane of first contract piece.

Preferably, a first connecting shaft is horizontally inserted into the inner wall of the upper end of the moving rod, a straight gear is sleeved on the outer wall of the end, extending outwards, of the first connecting shaft, a rack is connected to the upper side of the straight gear in a meshed mode, and the rack is arranged on the lower end face of the upper end cover;

the outer wall of one end, far away from the straight-teeth gear, of the first connecting shaft is sleeved with a first driving wheel, the first driving wheel is connected with a second driving wheel through a driving belt in a driving mode, a second connecting shaft is horizontally inserted into the inner wall of the second driving wheel, the second connecting shaft is arranged in the cleaning frame body, and a plurality of groups of cleaning scrapers are uniformly arranged around the outer wall, located in the cleaning frame body, of the second connecting shaft.

Preferably, the moving rod is provided with a limiting slide block at the top wall extending end of the upper end cover, and a limiting slide groove corresponding to the limiting slide block is arranged in the top wall of the upper end cover.

Preferably, one side of the upper end of the sweeping frame body is communicated with a dust hood, filter cotton is arranged in the dust hood, the upper end of the dust hood is communicated with a dust collection hose, a dust collector is arranged at the end, extending outwards, of the dust collection hose, and the dust collector is arranged on one side of the outer wall of the machine body shell;

one end of the reciprocating screw rod is connected with a driving motor through a rotating shaft, the other end of the reciprocating screw rod is provided with a convex block, and the side wall of the mounting groove is provided with a concave groove corresponding to the convex block.

Preferably, a top plate is arranged on one side wall of the cleaning frame body through a cavity groove, a wedge block is arranged on one side of the top plate, and the wedge block penetrates through the side wall of the cleaning frame body and extends inwards;

the bottom of roof is equipped with a plurality of groups spine piece, and the upper end of roof distributes has a plurality of groups spacing joint piece, and the outer wall of spacing joint piece has cup jointed the second spring, the both ends of second spring respectively with the top in chamber groove and the upper end fixed connection of roof.

Compared with the prior art, the invention has the beneficial effects that:

1. the screening frame body realizes cyclic reciprocating oscillation under the elastic action of the limiting component and the damping spring, so that horizontal vibration screening of plastic particles is realized;

2. by arranging the grading sieve, the plastic particles can be classified and sieved, and the plastic particles with various particle sizes can be sieved and collected, so that the production and processing efficiency is greatly improved;

3. the cleaning frame body can clean materials, so that the materials are prevented from being accumulated and blocked, the vibration screening is influenced, the materials are further screened, and the adsorption of dust is facilitated;

4. the plastic particles are turned by arranging the cleaning scraper, so that the materials are fully dispersed, the contact area between the materials is reduced, the dust is conveniently removed, the air pollution is reduced, and the air environment is purified.

In conclusion, the modified plastic particle dust collector overcomes the defects of the prior art, is reasonable in design, can be used for screening modified plastic particles with multiple particle sizes, is convenient to pack and collect, can be used for removing dust and adsorbing generated dust, can purify the air environment, and has high social use value and application prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure A-A according to the present invention;

FIG. 3 is a schematic view of the mounting structure of the travel bar of the present invention;

FIG. 4 is a schematic view of the installation structure of the sweeping frame of the present invention;

FIG. 5 is an enlarged view of the structure B of the present invention;

FIG. 6 is an enlarged view of the structure C of the present invention;

FIG. 7 is an enlarged view of the structure D of the present invention;

fig. 8 is a schematic structural view of the top plate of the present invention.

In the figure: the machine body shell 1, the first collection cavity 101, the second collection cavity 102, the third collection cavity 103, the first clapboard 104, the second clapboard 105, the first guide plate 106, the second guide plate 107, the first filter screen 108, the second filter screen 109, the clamping strip 110, the ball 111, the upper end cover 2, the screening frame 3, the classifying screen 4, the first screen 401, the second screen 402, the third screen 403, the separating strip 404, the limiting component 5, the limiting support rod 501, the limiting movable block 502, the spring 503, the movable groove 504, the movable rod 6, the first wedge 601, the rotary disk 7, the second wedge 701, the reciprocating screw rod 8, the convex block 801, the driving motor 9, the movable rod 10, the limiting slide block 11, the first connecting shaft 12, the straight gear 13, the rack 14, the first driving wheel 15, the driving belt 16, the second driving wheel 17, the second connecting shaft 18, the cleaning shock absorption frame 20, the scraping plate spring 21, the dust absorption cover 22, the dust absorption hose 23, the dust absorption hose, the, The vacuum cleaner 24, the top plate 25, the wedge block 26, the cavity groove 27, the spine block 28, the limit clamping block 29, the second spring 30, the sliding block 31 and the sliding groove 32

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

Example 1

Referring to fig. 1-6, a multifunctional screening and dust removing device for modified plastic granulation comprises a machine body shell 1, an upper end cover 2 and a screening frame body 3, wherein the upper end cover 2 is fixedly arranged at the upper end of the machine body shell 1, one side of the top of the upper end cover 2 is provided with a feed inlet, the feed inlet is positioned right above a first screen 401 and is used for feeding and screening modified plastic particles, the screening frame body 3 is arranged in the machine body shell 1, the bottom of the screening frame body 3 is provided with a classifying screen 4, two sides of the outer wall of the classifying screen 4 are symmetrically provided with limiting parts 5, the limiting parts 5 are used for limiting and supporting the screening frame body 3, so that the screening frame body 3 can stably and horizontally rock, a plurality of groups of damping springs 21 are connected between the limiting parts 5 and the inner side wall of the machine body shell 1, and the damping and buffering effects are achieved by arranging the damping springs 21;

the limiting part 5 comprises two symmetrical limiting movable blocks 502, a limiting support rod 501 penetrates between the two limiting movable blocks 502, the limiting support rod 501 is arranged in a movable groove 504, springs 503 are respectively sleeved on the outer walls of two ends of the limiting support rod 501, and the limiting movable blocks 502 can be elastically supported by the springs 503, so that an effective vibration effect is achieved;

the lower end face of the upper end cover 2 is provided with a mounting groove, a reciprocating screw 8 is horizontally arranged in the mounting groove, a moving rod 10 is sleeved on the outer wall of the reciprocating screw 8 in a threaded manner, a cleaning frame body 20 is fixedly arranged at the bottom of the moving rod 10, one end of the reciprocating screw 8 is connected with a driving motor 9 through a rotating shaft, the other end of the reciprocating screw 8 is provided with a convex block 801, the side wall of the mounting groove is provided with a concave groove corresponding to the convex block 801, the driving motor 9 drives the reciprocating screw 8 to rotate through the rotating shaft, and the reciprocating screw 8 drives the moving rod 10 to horizontally reciprocate;

a first partition plate 104 and a second partition plate 105 are arranged at the inner bottom of the machine body shell 1, and the first partition plate 104 and the second partition plate 105 divide the interior of the machine body shell 1 into a first collecting cavity 101, a second collecting cavity 102 and a third collecting cavity 103 in sequence; a first guide plate 106 is obliquely arranged in the first collection cavity 101, one end of the first guide plate 106 is connected with the first partition plate 104, a first filter screen 108 is arranged at the upward part of the connection part in the first partition plate 104, and the aperture size of the first filter screen 108 is consistent with that of the second filter screen 402; a second guide plate 107 is obliquely arranged in the second collection cavity 102, one end of the second guide plate 107 is connected with a second partition plate 105, a second filter screen 109 is arranged in the second partition plate 105 from the upward part of the connection part, and the aperture size of the second filter screen 109 is consistent with that of the first filter screen 401;

the classifying screen 4 comprises a first screen 401, a second screen 402 and a third screen 403, the first screen 401, the second screen 402 and the third screen 403 are connected through a barrier strip 404, the aperture of the screen in the first screen 401, the second screen 402 and the third screen 403 is gradually increased from the first screen 401 to the third screen 403, and the modified plastic particles can be classified and screened through the gradually increased aperture, so that the subsequent bagging is facilitated, and a large amount of labor force is saved;

the upper end surfaces of the first partition plate 104 and the second partition plate 105 are respectively provided with a clamping strip 110, the clamping strip 110 extends into the blocking strip 404, the bottom of the blocking strip 404 is provided with a limiting groove for clamping the clamping strip 110, the upper end surface of the clamping strip 110 is provided with a ball 111, and the limiting groove limits the clamping strip 110, so that the clamping strip 110 moves in the limiting groove, and the horizontal oscillation of the screening frame body 3 is prevented from being influenced by the first partition plate 104 and the second partition plate 105;

two symmetrical movable rods 6 are arranged on one side of the screening frame body 3 away from the damping spring 21, and a first wedge block 601 is arranged at the end, extending outwards, of the movable rod 6, penetrating through the side wall of the machine body shell 1; the outer side wall of the machine body shell 1 is provided with two symmetrical motors, the motors are connected with a rotary table 7 through a rotary shaft, the circumferential side wall of the rotary table 7 is uniformly provided with a plurality of groups of second wedge blocks 701 in a surrounding mode, the inclined plane of each second wedge block 701 is attached to the inclined plane of the corresponding first wedge block 601, the motors drive the rotary table 7 to rotate through the rotary shaft, the rotary table 7 drives the second wedge blocks 701 on the circumferential side wall to rotate, the second wedge blocks 701 are attached to the first wedge blocks 601, the movable rods 6 are enabled to inwards push the screening frame body 3, the screening frame body 3 is reset under the elastic action of the limiting parts 5 and the damping springs 21, circular oscillation is achieved, and vibration screening of plastic particles is further achieved;

a first connecting shaft 12 is horizontally inserted into the inner wall of the upper end of the moving rod 10, a straight gear 13 is sleeved on the outer wall of one end of the first connecting shaft 12 extending outwards, a rack 14 is engaged and connected with the upper side of the straight gear 13, the rack 14 is arranged on the lower end surface of the upper end cover 2, a first driving wheel 15 is sleeved on the outer wall of one end of the first connecting shaft 12 far away from the straight gear 13, the first driving wheel 15 is connected with a second driving wheel 17 through a driving belt 16 in a driving way, a second connecting shaft 18 is horizontally inserted into the inner wall of the second driving wheel 17, the second connecting shaft 18 is arranged in a cleaning frame body 20, a plurality of groups of cleaning scrapers 19 are uniformly arranged on the outer wall of the second connecting shaft 18 in the cleaning frame body 20 in a surrounding way, when the moving rod 10 moves horizontally, the straight gear 13 driving the side wall moves, because the straight gear 13 is engaged and connected with the rack 14, the straight gear 13 rotates, the straight gear 13 drives the first connecting shaft 12 to rotate, the first driving wheel 15 drives the second driving wheel 17 to rotate through the driving belt 16, the second driving wheel 17 drives the cleaning scraper 19 to rotate through the second connecting shaft 18, and then the cleaning scraper 19 turns over plastic particles, so that the materials are dispersed sufficiently, the contact area between the materials is reduced, and dust removal is facilitated;

the limit sliding block 11 is arranged at the extending end of the moving rod 10, which extends towards the top wall of the upper end cover 2, the limit sliding groove corresponding to the limit sliding block 11 is arranged in the top wall of the upper end cover 2, the limit sliding groove limits the limit sliding block 11, and the limit sliding block 11 slides in the limit sliding groove in a limiting way, so that the moving rod 10 can stably and horizontally reciprocate;

the upper end of the cleaning frame body 20 is communicated with a dust hood 22, filter cotton is arranged in the dust hood 22, the upper end of the dust hood 22 is communicated with a dust suction hose 23, the outward extending end of the dust suction hose 23 is provided with a dust collector 24, the dust collector 24 is arranged on one side of the outer wall of the machine body shell 1, the dust collector 24 is started, and dust generated by vibration is absorbed through the dust suction hose 23 and the dust hood 22, so that the working environment is purified, and the air quality is improved.

Example 2

Referring to fig. 1 to 6, the present embodiment is different from embodiment 1 in that a dust suction port is formed in the other side wall of the machine body housing 1 opposite to the dust collector 24, the dust suction port is communicated with the side wall of the sieving frame 3, a metal filter screen is arranged in the dust suction port, and a dust removing device is connected to an outward extending end of the dust suction port, and is a pulse dust remover of SCT4-550 type;

two side walls of the bottom of the sweeping frame body 20 are respectively provided with a plurality of groups of concave tooth grooves for evacuating and pushing plastic particles, which is beneficial to removing dust impurities;

a top plate 25 is arranged on one side wall of the cleaning frame body 20 through a cavity groove 27, a wedge block 26 is arranged on one side of the top plate 25, and the wedge block 26 penetrates through the side wall of the cleaning frame body 20 and extends inwards;

the bottom of the top plate 25 is provided with a plurality of groups of spine blocks 28, the upper end of the top plate 25 is distributed with a plurality of groups of limiting clamping blocks 29, the outer wall of the limiting clamping blocks 29 is sleeved with a second spring 30, and two ends of the second spring 30 are respectively fixedly connected with the top of the cavity groove 27 and the upper end of the top plate 25; sliding blocks 31 are symmetrically arranged on two side walls of the top plate 25, the sliding blocks 31 extend towards the side walls of the cavity groove 27, and sliding grooves 32 corresponding to the sliding blocks 31 are arranged on the side walls of the cavity groove 27; the extending end of the wedge block 26 towards the cleaning scraper 19 is an inclined surface, which is convenient for the cleaning scraper 19 to downwards press the wedge block 26 when rotating;

when the cleaning scraper 19 rotates, the cleaning scraper can abut against the wedge 26 to move downwards, the wedge 26 drives the top plate 25 to move downwards, the spine block 28 is driven to pierce the grading screen 4, the clearance abutting against the wedge 26 at the cleaning scraper 19 is reset, next reciprocating motion is carried out, and therefore the grading screen 4 can be dredged continuously.

Other undescribed structures refer to example 1.

The working principle is as follows: when the plastic particle screening machine is used, plastic particles to be screened enter the screening frame body 3 through the feeding hole, the motor on the outer side wall of the machine body shell 1 is started at the moment, the motor drives the rotary disc 7 to rotate through the rotary shaft, the rotary disc 7 drives the second wedge block 701 on the circumferential side wall to rotate, the second wedge block 701 is attached to the first wedge block 601, the movable rod 6 is enabled to push the screening frame body 3 inwards, the screening frame body 3 is reset under the elastic action of the limiting part 5 and the damping spring 21, the circular oscillation is realized, and then the vibration screening of the plastic particles is realized;

at this time, the plastic particles with smaller particle size enter the first collection cavity 101 through the first screen 401, the plastic particles with middle particle size enter the second collection cavity 102 through the second screen 402, the plastic particles with largest particle size enter the third collection cavity 103 through the third screen 403 for collection, because the aperture of the second screen 402 and the aperture of the third screen 403 are larger than the aperture of the first screen 401, a part of the particles fall into the third collection cavity 103, and then enter the second collection cavity 102 after being screened by the first filter screen 108, the plastic particles with smaller particle size existing in the second collection cavity 102 enter the first collection cavity 101 through the second filter screen 109 for collection, so that the plastic particles with different particle sizes can be maximally classified;

meanwhile, the driving motor 9 drives the reciprocating screw rod 8 to rotate through the rotating shaft, the reciprocating screw rod 8 drives the moving rod 10 to horizontally reciprocate, when the moving rod 10 moves horizontally, the straight gear 13 on the side wall is driven to move, the straight gear 13 rotates due to the meshed connection of the straight gear 13 and the rack 14, the straight gear 13 rotates to drive the first connecting shaft 12 to rotate, the first driving wheel 15 drives the second driving wheel 17 to rotate through the driving belt 16, the second driving wheel 17 drives the cleaning scraper 19 to rotate through the second connecting shaft 18, and then the plastic particles are turned by the cleaning scraper 19, so that the materials are dispersed sufficiently, the contact area between the materials is reduced, and dust removal is facilitated;

meanwhile, the cleaning frame body 20 can clean materials, so that the materials are prevented from being accumulated and blocked to influence vibration screening, the materials are further screened, and dust adsorption is facilitated; and further adsorb the rest dust in screening framework 3 through outside dust collector, avoid the adhesion of dust impurity to effectively improve modified plastic granules's quality.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (10)

1. The utility model provides a multi-functional modified plastics granulation is with screening dust collector, includes engine body shell (1), upper end cover (2) and screening framework (3), upper end cover (2) are fixed to be set up in the upper end of engine body shell (1), and screening framework (3) set up in engine body shell (1), its characterized in that:

a classifying screen (4) is arranged at the bottom of the screening frame body (3), limiting parts (5) are symmetrically arranged on two sides of the outer wall of the classifying screen (4), and a plurality of groups of damping springs (21) are connected between the limiting parts (5) and the inner side wall of the machine body shell (1);

the lower terminal surface of upper end cover (2) is equipped with the mounting groove, and the level is provided with reciprocal lead screw (8) in the mounting groove, and the outer wall screw thread of reciprocal lead screw (8) has cup jointed carriage release lever (10), and the bottom of carriage release lever (10) is fixed to be provided with cleans framework (20).

2. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 1, wherein: a first partition plate (104) and a second partition plate (105) are arranged at the inner bottom of the machine body shell (1), and the first partition plate (104) and the second partition plate (105) divide the interior of the machine body shell (1) into a first collecting cavity (101), a second collecting cavity (102) and a third collecting cavity (103) in sequence;

a first guide plate (106) is obliquely arranged in the first collection cavity (101), one end of the first guide plate (106) is connected with a first partition plate (104), and a first filter screen (108) is arranged in the first partition plate (104) from the connection part to the upper part;

a second guide plate (107) is obliquely arranged in the second collecting cavity (102), one end of the second guide plate (107) is connected with a second partition plate (105), and a second filter screen (109) is arranged in the second partition plate (105) from the upward part of the connection part.

3. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 2, wherein: the classifying screen (4) comprises a first screen (401), a second screen (402) and a third screen (403), the first screen (401), the second screen (402) and the third screen (403) are connected through a barrier strip (404), and the aperture of one of the first screen (401), the second screen (402) and the third screen (403) is gradually enlarged from the first screen (401) to the third screen (403).

4. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 3, wherein: the upper end face of first baffle (104) and second baffle (105) is equipped with joint strip (110) respectively, and joint strip (110) extend to separation strip (404) in, and the bottom of separation strip (404) is equipped with the spacing recess that is used for joint strip (110) joint, and the upper end face of joint strip (110) is equipped with ball (111).

5. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 1, wherein: the limiting part (5) comprises two symmetrical limiting movable blocks (502), a limiting support rod (501) penetrates between the two limiting movable blocks (502), the limiting support rod (501) is arranged in a movable groove (504), and springs (503) are sleeved on the outer walls of the two ends of the limiting support rod (501) respectively.

6. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 1, wherein: two symmetrical movable rods (6) are arranged on one side, away from the damping spring (21), of the screening frame body (3), and a first wedge block (601) is arranged at the outwardly extending end, penetrating through the side wall of the machine body shell (1), of each movable rod (6);

the lateral wall of engine body shell (1) is provided with the motor of two symmetries, and the motor is connected with carousel (7) through the pivot, and the circumference lateral wall of carousel (7) evenly encircles and is equipped with a plurality of groups second and contracts piece (701), and the inclined plane of second contract piece (701) and the inclined plane laminating of first contract piece (601).

7. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 1, wherein: a first connecting shaft (12) is horizontally inserted into the inner wall of the upper end of the moving rod (10), a straight gear (13) is sleeved on the outer wall of one end, extending outwards, of the first connecting shaft (12), a rack (14) is connected to the upper side of the straight gear (13) in a meshed mode, and the rack (14) is arranged on the lower end face of the upper end cover (2);

the outer wall of one end, far away from the straight gear (13), of the first connecting shaft (12) is sleeved with a first driving wheel (15), the first driving wheel (15) is connected with a second driving wheel (17) in a driving mode through a driving belt (16), the inner wall of the second driving wheel (17) is horizontally inserted with a second connecting shaft (18), the second connecting shaft (18) is arranged in a cleaning frame body (20), and a plurality of groups of cleaning scrapers (19) are uniformly arranged around the outer wall, located in the cleaning frame body (20), of the second connecting shaft (18).

8. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 7, wherein: the movable rod (10) is provided with a limiting slide block (11) at the top wall extending end of the upper end cover (2), and a limiting slide groove corresponding to the limiting slide block (11) is arranged in the top wall of the upper end cover (2).

9. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 1, wherein: a dust hood (22) is communicated with one side of the upper end of the cleaning frame body (20), filter cotton is arranged in the dust hood (22), a dust suction hose (23) is communicated with the upper end of the dust hood (22), a dust collector (24) is arranged at the outward extending end of the dust suction hose (23), and the dust collector (24) is arranged on one side of the outer wall of the machine body shell (1);

one end of the reciprocating screw rod (8) is connected with a driving motor (9) through a rotating shaft, the other end of the reciprocating screw rod is provided with a convex block (801), and the side wall of the mounting groove is provided with a concave groove corresponding to the convex block (801).

10. The screening and dedusting device for the multifunctional modified plastic granulation as claimed in claim 1, wherein: a top plate (25) is arranged on one side wall of the cleaning frame body (20) through a cavity groove (27), a wedge block (26) is arranged on one side of the top plate (25), and the wedge block (26) penetrates through the side wall of the cleaning frame body (20) and extends inwards;

the bottom of roof (25) is equipped with a plurality of groups spine piece (28), and the upper end distribution of roof (25) has a plurality of groups spacing joint piece (29), and second spring (30) have been cup jointed to the outer wall of spacing joint piece (29), the both ends of second spring (30) respectively with the top of chamber groove (27) and the upper end fixed connection of roof (25).

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