CN112123628A

CN112123628A - Multidirectional grading screening process for plastic particles

Info

Publication number: CN112123628A
Application number: CN202010770447.2A
Authority: CN
Inventors: 王奕
Original assignee: Nantong Ruizhi New Material Technology Co Ltd
Current assignee: Nantong Ruizhi New Material Technology Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-12-25
Anticipated expiration: 2040-08-04
Also published as: CN112123628B

Abstract

The invention discloses a plastic particle multidirectional grading screening process, belonging to the screening field, which improves the friction force among a dynamic rotating ring, a main static rotating ring and an auxiliary static rotating ring through a rubber ring, is convenient to generate higher centrifugal force to screen plastic particles, enables the aperture change among a plurality of shape memory filter screens to be unequal through the autorotation preheating of a temperature control multistage screening barrel, enables carbon dioxide gas in the rubber ring to expand with heat due to high temperature in the screening barrel when screening the plastic particles, improves the stability among the dynamic rotating ring, the main static rotating ring and the auxiliary static rotating ring through the rubber ring, is convenient to classify and take out the screened plastic particles, and reduces the friction force between the outer end of the dynamic rotating ring and the inner wall of the screening barrel by abutting the outer end of a ball against the inner wall of the screening barrel through an elastic telescopic rod when the dynamic rotating ring rotates in the screening barrel, thereby improve the inside pivoted centrifugal force of developments swivel at the screening bucket, improve the stability of screening.

Description

Multidirectional grading screening process for plastic particles

Technical Field

The invention relates to the field of screening, in particular to a multidirectional grading screening process for plastic particles.

Background

The plastic particles refer to granular plastics, which are generally divided into more than 200 types, and are subdivided into thousands of types, and common plastic particles include general plastics, engineering plastics, special plastics and general plastics: polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyester, polyurethane, etc., engineering plastics: nylon, polytetrafluoroethylene, polyformaldehyde, polycarbon organosilicon and the like, and special plastics are as follows: thermosetting plastics, functional polymer plastics, such as artificial kidney.

The regenerated plastic particles have wide application space, can be used for manufacturing various articles for daily use such as plastic bags, barrels, basins, toys, furniture, stationery and the like and various plastic products in daily life, can be used for manufacturing clothes, ties, buttons, zippers and building materials in the aspect of the clothing industry, can be used for manufacturing various building components, plastic doors and windows and the like by using a derivative plastic-wood profile of the regenerated plastic particles, can be used for manufacturing reaction kettles, pipelines, containers, pumps, valves and the like in the aspect of the chemical industry, can be applied to chemical production places for solving corrosion and abrasion, can be used for manufacturing agricultural films, water pumping pipes, agricultural implements, fertilizer packaging bags and cement packaging bags in the aspect of agriculture, and can also be widely applied to the electrical appliance industry and the telecommunication industry.

At present, when plastic particles are screened, the limitation on the diameter of the plastic particles is large, the diameter of a filter screen cannot be adjusted at will, and the filter screen is easy to block when the plastic particles are screened.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a multidirectional grading screening process for plastic particles, which can screen the plastic particles by generating higher centrifugal force, improve the screening efficiency, lead the aperture change among a plurality of shape memory filter screens to be unequal by self-rotation preheating of a temperature control multistage screening barrel, lead carbon dioxide gas in a rubber ring to be expanded by heat when screening the plastic particles by high temperature in the screening barrel, improve the stability among a dynamic rotating ring, a main static rotating ring and an auxiliary static rotating ring by the rubber ring, further improve the screening efficiency, facilitate the classification and the taking out of the screened plastic particles, lead the outer ends of balls to be abutted against the inner wall of the screening barrel by an elastic telescopic rod when the dynamic rotating ring rotates in the screening barrel, reduce the friction force between the outer end of the dynamic rotating ring and the inner wall of the screening barrel, further improve the centrifugal force of the dynamic rotating ring rotating in the screening barrel, the stability of screening is improved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A plastic particle multidirectional grading screening process comprises the following steps:

s1, opening the device body, and pouring the plastic particles into a temperature-controlled multi-stage screening barrel for screening;

s2, switching on a power supply, starting a motor, driving a temperature control multi-stage screening barrel to rotate through the motor, and enabling the temperature control multi-stage screening barrel to be preheated automatically, wherein plastic particles rotate in the temperature control multi-stage screening barrel in a closed manner in the process, and the screening process is not carried out;

s3, when the temperature control multi-stage screening barrel rotates to enable the temperature of the barrel to rise, the aperture of the temperature control multi-stage screening barrel is increased in different degrees due to the rise of the temperature, multi-stage screening of plastic particles is achieved, and the plastic particles with different particle sizes enter different cavities of the temperature control multi-stage screening barrel respectively.

Further, the device body comprises an upper stabilizing ring and a lower stabilizing ring, a plurality of uniformly distributed connecting rods are fixedly connected between the upper stabilizing ring and the lower stabilizing ring, a plurality of uniformly distributed support frames are fixedly connected at the lower end of the lower stabilizing ring, a screening barrel is fixedly connected between the inner walls of the upper stabilizing ring and the lower stabilizing ring, a support ring is fixedly connected between the inner walls of the lower stabilizing ring, the screening barrel is positioned at the upper side of the support ring, a barrel cover is arranged at the upper side of the screening barrel, a snap ring is fixedly connected at the lower end of the barrel cover, a ring groove matched with the snap ring is formed in the upper end of the screening barrel, a rotating shaft is rotatably connected with the bottom end wall of the screening barrel, a motor is fixedly connected at the lower end of the screening barrel, the output end of the motor is fixedly connected with the lower end of the rotating shaft, the temperature-controlled multistage screening barrel comprises a dynamic rotating ring, and the dynamic rotating ring rotates inside, the plastic particle screening device comprises a dynamic rotating ring, a main static rotating ring, a limiting ring, a pair of shape memory filter screens, a temperature control multistage screening barrel, a plurality of shape memory filter screens, a plurality of plastic particles, a plurality of temperature control multistage screening barrel, a plurality of shape memory filter screens and a plurality of shape memory filter screens, wherein the main static rotating ring is connected between the inner walls of the dynamic rotating ring in a sliding manner, the auxiliary static rotating ring is connected between the inner walls of the main static rotating ring in a sliding manner, the plurality of fixing rods are mutually close to one end of the limiting ring, the limiting ring is connected with a rotating shaft in a sliding manner, the plastic particles are firstly placed in the auxiliary static rotating ring, when the auxiliary static rotating ring, the main static rotating ring and the dynamic rotating ring rotate in the screening barrel simultaneously, higher centrifugal force is generated to screen, thereby screening plastic particles with different diameters.

Further, the outer end of main static change and vice static change is excavated there is the draw-in groove, equal fixedly connected with rubber circle between the draw-in groove inner wall, main static change and vice static change offset with the inner wall of dynamic change and main static change respectively through the rubber circle, the inside excavation of rubber circle has the chamber of depositing, it has carbon dioxide gas to deposit intracavity portion packing, when screening plastic pellet, the inside high temperature of screening bucket heats the inside carbon dioxide of rubber circle for the rubber circle meets thermal expansion, improves the stability between dynamic change, main static change and the vice static change through the rubber circle, is difficult for rocking in inside during the rotation, thereby improves screening efficiency, and is convenient for classify the plastic pellet of screening and takes out.

Further, the outer end of developments swivel is excavated there are a plurality of evenly distributed's mounting groove, fixedly connected with elasticity telescopic link between the inner wall of mounting groove, the upper end of elasticity telescopic link is excavated there is the slot rolling, the inside roll connection of slot rolling has the ball, the outer end of ball contacts with the inner wall of screening bucket, when the inside rotation of developments swivel at the screening bucket, offsets the outer end of ball and the inner wall of screening bucket through elasticity telescopic link for the ball contacts with the inner wall of screening bucket, reduces the outer end of developments swivel and the frictional force between the screening bucket inner wall, thereby improves the inside pivoted centrifugal force of developments swivel at the screening bucket, improves the stability of screening.

Further, go up the inner wall fixedly connected with sponge layer of stabilizing ring and lower stabilizing ring, the inner wall on sponge layer contacts with the outer end of screening bucket, reduces the impact force between stabilizing ring and lower stabilizing ring and the screening bucket to reduce noise pollution.

Further, the diapire fixedly connected with magnet of ring channel, the lower extreme fixedly connected with magnetic sheet of snap ring, the magnet of ring channel diapire and the magnetic sheet of snap ring lower extreme adsorb each other, and the bung is difficult for droing in the upper end of screening bucket when rotating, and the plastic pellet in the effectual reduction screening bucket reveals.

Furthermore, a circular through hole is formed in the upper end of the barrel cover, a glass panel is fixedly connected between the inner walls of the circular through hole, and when plastic particles are screened, the internal screening condition can be conveniently observed.

Further, the outer end of pivot is dug threadedly, the outer end threaded connection of pivot has a tight ring in top, the tight ring in top is located the upside of spacing ring, and the tight ring in top is fixed spacingly to the dead lever, reduces the risk that vice static change drops in main static change inside.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme produces higher centrifugal force and filters plastic granules, the efficiency of the screen is improved, preheat through the rotation of control by temperature change multi-stage screening bucket, make the aperture change between a plurality of shape memory filter screens unequal, when screening plastic granules, the inside high temperature of screening bucket makes the carbon dioxide gas in the rubber circle meet thermal expansion, improve the dynamic swivel through the rubber circle, stability between main static swivel and the vice static swivel, thereby improve the screening efficiency, and be convenient for classify the plastic granules of screening and take out, when the inside rotation of dynamic swivel at the screening bucket, offset the outer end of ball and the inner wall of screening bucket through elastic telescopic link, reduce the outer end of dynamic swivel and the frictional force between the screening bucket inner wall, thereby improve the inside pivoted centrifugal force of dynamic swivel at the screening bucket, the stability of screening is improved.

(2) The device body comprises an upper stabilizing ring and a lower stabilizing ring, a plurality of uniformly distributed connecting rods are fixedly connected between the upper stabilizing ring and the lower stabilizing ring, a plurality of uniformly distributed support frames are fixedly connected at the lower end of the lower stabilizing ring, a screening barrel is fixedly connected between the inner walls of the upper stabilizing ring and the lower stabilizing ring, a support ring is fixedly connected between the inner walls of the lower stabilizing ring, the screening barrel is positioned at the upper side of the support ring, a barrel cover is arranged at the upper side of the screening barrel, a clamping ring is fixedly connected at the lower end of the barrel cover, an annular groove matched with the clamping ring is formed in the upper end of the screening barrel, a rotating shaft is rotatably connected with the bottom end wall of the screening barrel, a motor is fixedly connected at the lower end of the screening barrel, the output end of the motor is fixedly connected with the lower end of the rotating shaft, the temperature-controlled multistage screening barrel comprises a dynamic rotating ring, the dynamic rotating ring rotates in the, sliding connection has the vice static change of assorted between the inner wall of main static change, a plurality of evenly distributed's of fixedly connected with dead lever between the inner wall of vice static change, the one end fixedly connected with spacing ring that a plurality of dead levers are close to each other, spacing ring and pivot sliding connection, a pair of dynamic change, equal fixedly connected with shape memory filter screen between main static change and the vice static change, at first place the inside at vice static change, when vice static change, main static change and dynamic change rotate when the inside of screening bucket rotates simultaneously, produce higher centrifugal force and filter the plastic pellet, improve the screening efficiency, preheat through the multistage screening bucket rotation of control by temperature change, make the aperture between a plurality of shape memory filter screens carry out different degree grow because of the temperature rise, thereby filter the plastic pellet of different diameters.

(3) The outer end of main static change and vice static change is excavated there is the draw-in groove, equal fixedly connected with rubber circle between the draw-in groove inner wall, main static change and vice static change offset with the inner wall of dynamic change and main static change respectively through the rubber circle, the inside excavation of rubber circle has the chamber of depositing, it has carbon dioxide gas to deposit the inside packing of chamber, when screening plastic pellet, the inside high temperature of screening bucket heats the inside carbon dioxide of rubber circle, make the rubber circle meet thermal expansion, improve the dynamic change through the rubber circle, stability between main static change and the vice static change, be difficult for during the rotation rocking in inside, thereby improve the screening efficiency, and be convenient for carry out classification to the plastic pellet of screening and take out.

(4) The outer end of developments swivel is excavated there are a plurality of evenly distributed's mounting groove, fixedly connected with elasticity telescopic link between the inner wall of mounting groove, the upper end of elasticity telescopic link is excavated there is the slot rolling, the inside roll connection of slot rolling has the ball, the outer end of ball contacts with the inner wall of screening bucket, when the inside rotation of developments swivel at the screening bucket, offset the outer end of ball and the inner wall of screening bucket through elasticity telescopic link, make the ball contact with the inner wall of screening bucket, reduce the frictional force between the outer end of developments swivel and the screening bucket inner wall, thereby improve the inside pivoted centrifugal force of developments swivel at the screening bucket, improve the stability of screening.

(5) Go up the inner wall fixedly connected with sponge layer of stabilizing ring and lower stabilizing ring, the inner wall on sponge layer contacts with the outer end of screening bucket, reduces the impact force between stabilizing ring and lower stabilizing ring and the screening bucket to reduce noise pollution.

(6) The diapire fixedly connected with magnet of ring channel, the lower extreme fixedly connected with magnetic sheet of snap ring, the magnet of ring channel diapire and the magnetic sheet of snap ring lower extreme adsorb each other, and the bung is difficult for droing in the upper end of screening bucket when rotating, and the plastic pellet in the effectual reduction screening bucket reveals.

(7) The upper end of the barrel cover is provided with a circular through hole, and a glass panel is fixedly connected between the inner walls of the circular through holes, so that the internal screening condition can be conveniently observed when plastic particles are screened.

(8) The outer end of pivot is dug threadedly, and the outer end threaded connection of pivot has a tight ring in top, and the tight ring in top is located the upside of spacing ring, and the tight ring in top is fixed spacingly to the dead lever, reduces the risk that vice static change drops in main static change inside.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the sieving barrel of the present invention

FIG. 2 is a perspective view of the upper stabilizer ring of the present invention;

FIG. 3 is a schematic perspective view of a rotating shaft according to the present invention;

FIG. 4 is a schematic perspective view of a shape memory filter of the present invention;

FIG. 5 is a schematic top view of a cross-sectional structure of the dynamic swivel of the present invention;

fig. 6 is an enlarged schematic view of a portion a in fig. 5.

The reference numbers in the figures illustrate:

the device comprises an upper stabilizing ring 1, a connecting rod 2, a lower stabilizing ring 3, a supporting ring 4, a supporting frame 5, a screening barrel 6, an annular groove 7, a barrel cover 8, a clamping ring 9, a glass panel 10, a rotating shaft 11, a dynamic rotating ring 14, a main static rotating ring 15, an auxiliary static rotating ring 16, a limiting ring 17, a fixing rod 18, a rubber ring 19, a shape memory filter screen 20, a mounting groove 21, an elastic telescopic rod 22, a rolling groove 23 and a ball 24.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1, a multi-directional grading screening process for plastic particles includes the following steps:

Referring to fig. 1-4, the device body comprises an upper stabilizing ring 1 and a lower stabilizing ring 3, a plurality of uniformly distributed connecting rods 2 are fixedly connected between the upper stabilizing ring 1 and the lower stabilizing ring 3, a plurality of uniformly distributed support frames 5 are fixedly connected at the lower end of the lower stabilizing ring 3, a screening barrel 6 is fixedly connected between the inner walls of the upper stabilizing ring 1 and the lower stabilizing ring 3, a support ring 4 is fixedly connected between the inner walls of the lower stabilizing ring 3, the screening barrel 6 is positioned at the upper side of the support ring 4, a barrel cover 8 is arranged at the upper side of the screening barrel 6, a snap ring 9 is fixedly connected at the lower end of the barrel cover 8, an annular groove 7 matched with the snap ring 9 is arranged at the upper end of the screening barrel 6, a rotating shaft 11 is rotatably connected at the bottom end wall of the screening barrel 6, a motor is fixedly connected at the lower end of the screening barrel 6, the output end of the motor is, for example: 110BYG350DH-SAKSMA-0501, the multistage screening bucket of control by temperature change includes dynamic swivel 14, dynamic swivel 14 rotates in the inside of screening bucket 6, sliding connection has assorted main static swivel 15 between the inner wall of dynamic swivel 14, sliding connection has assorted vice static swivel 16 between the inner wall of main static swivel 15, a plurality of evenly distributed's of fixedly connected with dead lever 18 between the inner wall of vice static swivel 16, the one end fixedly connected with spacing ring 17 that a plurality of dead levers 18 are close to each other, spacing ring 17 and pivot 11 sliding connection, a pair of dynamic swivel 14, equal fixedly connected with shape memory filter screen 20 between main static swivel 15 and the vice static swivel 16, shape memory filter screen 20 adopts shape memory alloy to make, for example: nickel titanium memory alloy, control by temperature change screening bucket carries out closed rotation before preheating, do not sieve the process, at first place plastic pellet in the inside of vice static change 16, when vice static change 16, main static change 15 and dynamic change 14 rotate simultaneously in the inside of screening bucket 6, improve dynamic change 14 through rubber circle 19, the frictional force between main static change 15 and the vice static change 16, be difficult for rocking in the inside of screening bucket 6, be convenient for produce higher centrifugal force and filter the plastic pellet, improve screening efficiency, it meets heat to carry out through the multistage rotation of screening bucket of control by temperature change, make self temperature rise, make the aperture change between a plurality of shape memory filter screens 20 unequal, thereby filter the plastic pellet of different diameters.

Please refer to fig. 4, the outer ends of the main static swivel 15 and the auxiliary static swivel 16 are chiseled with a clamping groove, a rubber ring 19 is fixedly connected between the inner walls of the clamping groove, the main static swivel 15 and the auxiliary static swivel 16 respectively abut against the inner walls of the dynamic swivel 14 and the main static swivel 15 through the rubber ring 19, a storage cavity is chiseled inside the rubber ring 19, the storage cavity is filled with carbon dioxide gas, when plastic particles are screened, the carbon dioxide inside the rubber ring 19 is heated by the high temperature inside the screening barrel 6, so that the rubber ring 19 expands when heated, the stability between the dynamic swivel 14 and the main static swivel 15 and the auxiliary static swivel 16 is improved through the rubber ring 19, the plastic particles are not easy to shake inside during rotation, thereby improving the screening efficiency, and facilitating the classified taking out of the screened plastic particles.

Referring to fig. 5-6, the outer end of the dynamic swivel 14 is drilled with a plurality of mounting grooves 21 which are uniformly distributed, an elastic telescopic rod 22 is fixedly connected between the inner walls of the mounting grooves 21, a rolling groove 23 is drilled at the upper end of the elastic telescopic rod 22, a ball 24 is connected inside the rolling groove 23 in a rolling manner, the outer end of the ball 24 is in contact with the inner wall of the screening barrel 6, when the dynamic swivel 14 rotates inside the screening barrel 6, the outer end of the ball 24 is abutted against the inner wall of the screening barrel 6 through the elastic telescopic rod 22, so that the ball 24 is in contact with the inner wall of the screening barrel 6, the friction between the outer end of the dynamic swivel 14 and the inner wall of the screening barrel 6 is reduced, the centrifugal force of the dynamic swivel 14 rotating inside the screening barrel 6 is increased, and the screening stability is.

Referring to fig. 1-2, the inner walls of the upper stabilizing ring 1 and the lower stabilizing ring 3 are fixedly connected with sponge layers, the inner walls of the sponge layers are in contact with the outer end of the screening barrel 6, so that the impact force between the upper stabilizing ring 1 and the lower stabilizing ring 3 and the screening barrel 6 is reduced, noise pollution is reduced, the bottom wall of the annular groove 7 is fixedly connected with a magnet, the lower end of the clamping ring 9 is fixedly connected with a magnetic sheet, the magnet at the bottom wall of the annular groove 7 and the magnetic sheet at the lower end of the clamping ring 9 are mutually adsorbed, the barrel cover 8 is not easy to fall off at the upper end of the screening barrel 6 during rotation, and plastic particle leakage.

Referring to fig. 2-4, a circular through hole is drilled at the upper end of the barrel cover 8, a glass panel 10 is fixedly connected between the inner walls of the circular through hole, when plastic particles are screened, the internal screening condition can be conveniently observed, a thread is drilled at the outer end of the rotating shaft 11, a tightening ring is connected to the outer end of the rotating shaft 11 through the thread, the tightening ring is located on the upper side of the limit ring 17, the tightening ring fixes and limits the fixing rod 18, and the risk that the auxiliary static rotating ring 16 falls off inside the main static rotating ring 15 is reduced.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. A plastic particle multidirectional grading screening process is characterized in that: the screening process comprises the following steps:

2. The multi-directional grading and screening process of plastic particles according to claim 1, characterized in that: the device body comprises an upper stabilizing ring (1) and a lower stabilizing ring (3), a plurality of evenly distributed connecting rods (2) are fixedly connected between the upper stabilizing ring (1) and the lower stabilizing ring (3), a plurality of evenly distributed supporting frames (5) are fixedly connected at the lower end of the lower stabilizing ring (3), a screening barrel (6) is fixedly connected between the inner walls of the upper stabilizing ring (1) and the lower stabilizing ring (3), a supporting ring (4) is fixedly connected between the inner walls of the lower stabilizing ring (3), the screening barrel (6) is positioned at the upper side of the supporting ring (4), a barrel cover (8) is arranged at the upper side of the screening barrel (6), a clamping ring (9) is fixedly connected at the lower end of the barrel cover (8), a ring groove (7) matched with the clamping ring (9) is formed in the upper end of the screening barrel (6), and a rotating shaft (11) is rotatably connected to the bottom end wall of the screening barrel (6), the lower end of the screening barrel (6) is fixedly connected with a motor, the output end of the motor is fixedly connected with the lower end of the rotating shaft (11), the temperature-controlled multi-stage screening barrel comprises a dynamic rotating ring (14), the dynamic rotating ring (14) rotates inside the screening barrel (6), the inner walls of the dynamic rotating rings (14) are connected with matched main static rotating rings (15) in a sliding way, the inner wall of the main static rotary ring (15) is connected with a matched auxiliary static rotary ring (16) in a sliding way, a plurality of fixing rods (18) which are uniformly distributed are fixedly connected between the inner walls of the auxiliary static rotary rings (16), one ends of the plurality of fixing rods (18) which are close to each other are fixedly connected with a limiting ring (17), spacing ring (17) and pivot (11) sliding connection, it is a pair of equal fixedly connected with shape memory filter screen (20) between developments change (14), main static change (15) and vice static change (16).

3. The multi-directional grading and screening process of plastic particles according to claim 1, characterized in that: the outer end of main static change ring (15) and vice static change ring (16) is opened and is dug the draw-in groove, equal fixedly connected with rubber circle (19) between the draw-in groove inner wall, main static change ring (15) and vice static change ring (16) are passed through rubber circle (19) and are offset with the inner wall of dynamic change ring (14) and main static change ring (15) respectively, the inside of rubber circle (19) is opened and is dug and has been deposited the chamber, it has carbon dioxide gas to deposit the intracavity portion packing.

4. The multi-directional grading and screening process of plastic particles according to claim 1, characterized in that: the outer end of developments change (14) is opened and is dug mounting groove (21) that have a plurality of evenly distributed, fixedly connected with elasticity telescopic link (22) between the inner wall of mounting groove (21), the upper end of elasticity telescopic link (22) is opened and is dug and has slot rolling (23), the inside roll connection of slot rolling (23) has ball (24), the outer end of ball (24) contacts with the inner wall of screening bucket (6).

5. The multi-directional grading and screening process of plastic particles according to claim 1, characterized in that: the inner walls of the upper stabilizing ring (1) and the lower stabilizing ring (3) are fixedly connected with sponge layers, and the inner walls of the sponge layers are in contact with the outer ends of the screening barrels (6).

6. The multi-directional grading and screening process of plastic particles according to claim 1, characterized in that: the magnetic ring is characterized in that the bottom wall of the annular groove (7) is fixedly connected with a magnet, the lower end of the clamping ring (9) is fixedly connected with a magnetic sheet, and the magnet on the bottom wall of the annular groove (7) and the magnetic sheet at the lower end of the clamping ring (9) are mutually adsorbed.

7. The multi-directional grading and screening process of plastic particles according to claim 1, characterized in that: the upper end of the barrel cover (8) is provided with a circular through hole in a chiseled mode, and a glass panel (10) is fixedly connected between the inner walls of the circular through holes.

8. The multi-directional grading and screening process of plastic particles according to claim 1, characterized in that: the outer end of the rotating shaft (11) is provided with a thread, the outer end of the rotating shaft (11) is in threaded connection with a jacking ring, and the jacking ring is located on the upper side of the limiting ring (17).