CN111037783A

CN111037783A - Plastic master batch screening device

Info

Publication number: CN111037783A
Application number: CN201911365968.3A
Authority: CN
Inventors: 沈建新
Original assignee: Jiashan Jinjia Plastic Industry Co Ltd
Current assignee: Jiashan Jinjia Plastic Industry Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-21

Abstract

The invention relates to the field of plastic master batch screening, in particular to a plastic master batch screening device, which comprises a vibration mechanism, a lifting mechanism, a dust suction mechanism and a screening mechanism, wherein the dust suction mechanism is used for sucking dust in the vibration mechanism and is arranged on one side of the vibration mechanism, the lifting mechanism is positioned on one side of the screening mechanism far away from the dust suction mechanism, an upper guide channel is fixedly arranged at the top of the screening mechanism, a lower guide channel is fixedly arranged at the outer edge of the bottom of the screening mechanism, the screening mechanism comprises a material containing box and a plurality of screening discs, the inner side of each screening disc is provided with a plurality of strip-shaped material containing gaps, the strip-shaped material containing gaps are distributed at equal intervals along the length direction of the screening discs, the material containing box is provided with strip-shaped gaps for the screening discs to draw out, and the plastic master batch screening device can realize the circulating action of the strip-shaped material containing, and then the plastic master batches are screened, so that the plastic master batches with various specifications can be conveniently screened and separated.

Description

Plastic master batch screening device

Technical Field

The invention relates to the field of plastic master batch screening, in particular to a plastic master batch screening device.

Background

The plastic master batch is also called plastic master batch, and is a concentrated body prepared by carrying plastic additives in an ultra-constant manner in resin; when the plastic product is manufactured, the plastic additive does not need to be added, and the master batch with the excess amount is added in proportion. Therefore, the plastic master batch is a special material for processing a novel high polymer material. Various types, such as filling master batch, color master batch, flame-retardant master batch, antistatic master batch, wear-resistant master batch, multifunctional master batch and the like

Chinese patent application No.: CN 201821383081.8; the publication date is as follows: 2019.04.19 discloses a multistage screening plant of plastics master batch, including the screening case, the inlet pipe is installed through the bolt to one side of screening roof portion outer wall, and the top outer wall of inlet pipe installs the feeder hopper through the bolt, four hot plates are installed through the bolt to the circumference outer wall of feeder hopper, and the top outer wall of feeder hopper installs the apron through the bolt, the filling tube is installed through the bolt to the one end of apron roof portion outer wall, and the bottom outer wall of apron installs the dead lever through the bearing, the connecting box is installed through the bolt to one side that the screening case is close to the inlet pipe. The invention utilizes the blower to blow for primary screening, then utilizes the filter screen plate to carry out secondary filtration, the dusty plastic master batches with small volume pass through the filter screen plate, other plastic master batches fall into the transfer box, and the vibration screen is utilized to carry out secondary screening, thereby utilizing the device to carry out multistage screening, and fully utilizing the plastic master batches with different sizes.

This plastics master batch sieving mechanism screens the plastics master batch through the wind-force of air-blower, and because plastics master batch quantity is too much, is difficult to screen through wind-force, only is convenient for separate the powder of plastics master batch and plastics master batch.

Disclosure of Invention

The invention aims to provide a plastic master batch screening device.

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

provides a plastic master batch screening device, which comprises a vibration mechanism, a lifting mechanism, a dust suction mechanism and a screening mechanism, wherein the vibration mechanism is fixedly arranged on the ground, the top of the vibration mechanism is fixedly connected with the bottom of the screening mechanism, the dust suction mechanism is arranged on one side of the vibration mechanism and is used for sucking dust inside the vibration mechanism, the lifting mechanism is arranged on one side of the screening mechanism, which is far away from the dust suction mechanism, the discharge end of the lifting mechanism is connected with the inside of the screening mechanism through an upper guide way, the upper guide way is fixedly arranged on the top of the screening mechanism, the feed end of the lifting mechanism is connected with the inside of the screening mechanism through a lower guide way, the lower guide way is fixedly arranged on the outer edge of the bottom of the screening mechanism, the screening mechanism comprises a material containing box and a plurality of screening discs, the plurality of screening discs are obliquely arranged on the inner side of the material containing box, a plurality of bar holding notches are formed in the inner side of each screening disc, and are distributed at equal intervals along the length direction of the screening disc, bar notches for the screening discs to be taken out are formed in the holding bin, and the holding bin is connected with the screening disc in a sliding mode.

Further, the fixed extension board that is provided with in one side bottom of screening dish, the fixed plate that is provided with in top of extension board, the length direction of fixed plate is the same with the length direction of screening dish, and the fixed a plurality of guide pillar that is provided with in bottom of screening dish, and the length direction evenly distributed of guide pillar eye screening dish holds the fixed gliding arc baffle that supplies the guide pillar that is provided with on the workbin.

Further, hold the workbin and include side cap, top cap and box, the box is fixed to be set up at the top of vibration mechanism, and the top of arc baffle fixed mounting and box, the personnel hole that supplies the plastics master batch to get into is seted up at the top of arc baffle, and the side cap passes through the bolt to be connected with dismantling of box, and the bar breach is located the side cap.

Further, vibration mechanism includes vibrating motor, four last spring holders, lower spring holder and damping spring, and vibrating motor is fixed to be set up in the bottom of box, and four last spring holders all fixed four ends of setting in the bottom of box, and every lower spring holder all is located the bottom of last spring holder, and damping spring is located between last spring holder and the lower spring holder, and damping spring's both ends and last spring holder and lower spring holder conflict.

Further, hoist mechanism includes driving motor, the motor cabinet, the hob and appearance material pipe, it is subaerial to hold the material pipe vertical fixed the setting, the hob is located the inboard of holding the material pipe, and the hob outer fringe is laminated with the inner edge of holding the material pipe, driving motor is located the top of hob, driving motor's output passes through shaft coupling and hob top fixed connection, the motor cabinet is used for supporting the top of installing at the discharging pipe of driving motor, and be provided with the discharging pipe of downward sloping on holding the top outer fringe of material pipe, be provided with the inlet pipe of tilt up on holding the bottom outer fringe of material pipe, the discharging pipe is connected with the feed inlet of upper guide way, it connects with lower guide way discharge gate to hold the material pipe.

Further, dust absorption mechanism is including inhaling the material hose, centrifugal fan, square pipe and collecting box, and centrifugal fan is fixed to be set up the side at screening mechanism, holds the fixed connector that is provided with on the workbin, and inhales the one end of material hose and centrifugal fan's air intake connection, inhales the other end of material hose and holds the connector connection of workbin, and the collecting box is installed at the side of square pipe, and the one end of square pipe with inhale the air outlet connection of material hose, the other end and the collecting box of square pipe are connected.

Further, lower guide way includes first guide box, the funnel and the pipe of gathering materials, and the box is passed to the one end of first guide box, and just first guide box is located the screening dish under, and the funnel that gathers materials is located the other end of first guide box under, and the funnel that gathers materials is fixed to be set up subaerial, and the one end of pipe is connected with the discharge gate of the funnel that gathers materials, and the other end of pipe is inserted and is set up in hoist mechanism's feed pipe.

Furthermore, the upper guide channel comprises a second material guide box, a turnover plate and a baffle plate, one end of the second material guide box is inserted in the box body, the other end of the second material guide box is located under the discharge pipe of the lifting mechanism, the second material guide box is arranged in an inclined mode, the turnover plate is fixedly installed at the bottom of the second material guide box, the bottom of the turnover plate is fixedly connected with the top of the top cover, and the baffle plate is fixedly welded at the top of the outer edge of one end of the second material guide box.

The invention has the beneficial effects that: when plastic master batches are required to be screened, firstly, the plastic master batches are added into a screening mechanism by workers, then the vibration of the screening mechanism is driven by the vibration action of a vibration motor, so that the vibration of a screening disc in the screening mechanism is realized, the plastic master batches are further vibrated along the screening disc, when the diameter of the plastic master batches is larger than the width of a strip-shaped material containing gap, the plastic master batches are slowly vibrated into a first material guide box on a lower guide channel along a plurality of layers of screening discs, then are drawn into a material collecting hopper by the first material guide box, are collected by the action of a material collecting hopper, enter a guide pipe through a discharge port of the material collecting hopper, enter a feed pipe of a lifting mechanism through the guide pipe, and when the diameter of the plastic master batches is smaller than or is smaller than the width of the strip-shaped material containing gap, the plastic master batches are clamped in the strip-shaped material containing gap and enter the plastic master batches in the lifting mechanism, will enter into along the inlet pipe and hold in the material pipe, rethread driving motor's effect and then drive the rotation of hob for the hob drives the slow upward movement of plastics master batch, rethread discharging pipe roll-off, and then in entering into the second guide box, the effect through second guide box enters into in the screening mechanism, carry out screening once more to the plastics master batch, after a period, through pulling screening dish, and then will screen the dish and take out the appearance workbin along the bar breach, the rethread workman will screen the plastics master batch on the dish and clear up and get off.

This plastics master batch sieving mechanism goes up the circulation effect of leading way and lower leading way through the bar appearance material breach and hoist mechanism on the screening dish, and then filters the plastics master batch, and then is convenient for filter the separation to the plastics master batch of various specifications.

Drawings

In order to more clearly illustrate the technical solution of the embodiment of the present invention, the attached drawings required to be used in the embodiment of the present invention will be briefly described below.

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a first schematic perspective view of a screening tray;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic perspective view of a second screening tray;

FIG. 6 is a partial perspective view of the first embodiment of the present invention;

FIG. 7 is a schematic perspective view of the material containing box;

FIG. 8 is a partial perspective view of the second embodiment of the present invention;

FIG. 9 is an exploded perspective view of the lifting mechanism;

FIG. 10 is a perspective view of the dust suction mechanism;

FIG. 11 is a schematic perspective view of a lower guideway;

FIG. 12 is a schematic perspective view of the upper guideway;

in the figure:

1. a vibration mechanism; 1a, an upper spring seat; 1b, a lower spring seat; 1c, a damping spring; 1d, a vibration motor;

2. a lifting mechanism; 2a, driving a motor; 2b, a motor base; 2c, a screw rod; 2d, containing the material pipe; 2e, a feed pipe; 2f, a discharge pipe;

3. a dust suction mechanism; 3a, a material suction hose; 3b, a centrifugal fan; 3c, a square conduit; 3d, a collecting box;

4. a screening mechanism; 4a, a screening disc; 4a1, strip-shaped material containing gaps; 4a2, guide posts; 4a3, extension panel; 4a4, fixing plate; 4b, containing a material box; 4b1, side covers; 4b11, a strip-shaped notch; 4b2, arc guide plate; 4b3, case; 4b4, top cover;

5. an upper guide way; 5a, a second material guide box; 5b, turning the folded plate; 5c, a baffle plate;

6. a lower guide way; 6a, a first material guide box; 6b, an aggregate funnel; 6c, a conduit.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.

Referring to fig. 1 to 12, a plastic master batch screening device comprises a vibration mechanism 1, a lifting mechanism 2, a dust suction mechanism 3 and a screening mechanism 4, wherein the vibration mechanism 1 is fixedly installed on the ground, the top of the vibration mechanism 1 is fixedly connected with the bottom of the screening mechanism 4, the dust suction mechanism 3 is installed on one side of the vibration mechanism 1 for sucking dust inside the vibration mechanism 1, the lifting mechanism 2 is located on one side of the screening mechanism 4 far away from the dust suction mechanism 3, the discharge end of the lifting mechanism 2 is connected with the inside of the screening mechanism 4 through an upper guide way 5, the upper guide way 5 is fixedly installed on the top of the screening mechanism 4, the feed end of the lifting mechanism 2 is connected with the inside of the screening mechanism 4 through a lower guide way 6, the lower guide way 6 is fixedly installed on the outer edge of the bottom of the screening mechanism 4, the screening mechanism 4 comprises a material containing box 4b and a plurality of screening discs 4a, the plurality of screening discs 4a are obliquely installed on the inner side of the, hold workbin 4 b's bottom and vibration mechanism 1's top fixed connection, a plurality of bar is held and is expected breach 4a1 has all been seted up to every screening dish 4 a's inboard, and a plurality of bar is held and is expected breach 4a1 along the equidistant distribution of length direction of screening dish 4a holds the workbin 4b and last the offering supplies screening dish 4a to take out bar breach 4b11, and holds workbin 4b and screening dish 4a sliding connection. When plastic master batches are required to be screened, firstly, the plastic master batches are added into the screening mechanism 4 by workers, then the vibration of the screening mechanism 4 is driven by the vibration action of the vibration mechanism 1, so that the vibration of the screening disk 4a in the screening mechanism 4 is realized, the plastic master batches are further vibrated along the screening disk 4a, when the diameter of the plastic master batches is larger than the width of the strip-shaped material containing gap 4a1, the plastic master batches are slowly vibrated to the lower guide way 6 along a plurality of layers of the screening disk 4a, then the plastic master batches are guided into the lifting mechanism 2 through the lower guide way 6, and when the diameter of the plastic master batches is smaller than or equal to the width of the strip-shaped material containing gap 4a1, the plastic master batches are clamped in the strip-shaped material containing gap 4a1, the plastic master batches entering the lifting mechanism 2 enter the upper guide way 5 under the action of the lifting mechanism 2, and enter the screening mechanism 4 under the action of the upper guide way 5, the plastic master batches are screened again, after a period of time, the screening disc 4a is pulled, the material containing box 4b is drawn out along the strip-shaped notch 4b11 from the screening disc 4a, and then the plastic master batches on the screening disc 4a are cleaned by workers.

An extension plate 4a3 is fixedly arranged at the bottom of one side of the screening disk 4a, a fixing plate 4a4 is fixedly arranged at the top of the extension plate 4a3, the length direction of the fixing plate 4a4 is the same as that of the screening disk 4a, a plurality of guide posts 4a2 are fixedly arranged at the bottom of the screening disk 4a, the guide posts 4a2 are uniformly distributed in the length direction of the screening disk 4a, and an arc-shaped guide plate 4b2 for the guide posts 4a2 to slide is fixedly arranged on the material accommodating box 4 b. The screening disk 4a is supported and guided by the guide post 4a2 and the arc guide plate 4b2, and the screening disk 4a is conveniently drawn out of the material box 4b by a worker through the fixing plate 4a 4.

Hold workbin 4b and include side cap 4b1, top cap 4b4 and box 4b3, box 4b3 is fixed to be set up at the top of vibration mechanism 1, arc guide 4b2 fixed mounting and box 4b 3's top, the personnel's material hole that supplies the plastics master batch to get into is seted up at the top of arc guide 4b2, side cap 4b1 passes through the detachable of bolt with box 4b3 and is connected, and strip-shaped breach 4b11 is located on side cap 4b 1. The side cover 4b1 is removably attached to the case 4b3 by bolts, thereby facilitating periodic maintenance and cleaning of the interior of the case 4b3 by workers.

Vibration mechanism 1 includes vibrating motor 1d, four go up spring holder 1a, spring holder 1b and damping spring 1c down, vibrating motor 1d is fixed to be set up in the bottom of box 4b3, and four go up spring holder 1a and all fix the bottom four ends that set up at box 4b3, every lower spring holder 1b all is located the bottom of last spring holder 1a, damping spring 1c is located between spring holder 1a and the lower spring holder 1b, and damping spring 1 c's both ends are contradicted with last spring holder 1a and lower spring holder 1 b. Through the action of the vibration motor 1d, the vibration of the vibration motor 1d to the box body 4b3 is enabled to be even through the action of the upper spring seat 1a, the vibration reduction spring 1c and the lower spring seat 1b, and the vibration amplitude of the box body 4b3 is enabled to be even.

Lifting mechanism 2 includes driving motor 2a, motor cabinet 2b, hob 2c and holding material pipe 2d, it sets up subaerial to hold material pipe 2d to be vertical fixed, hob 2c is located holds the inboard of material pipe 2d, and the inner edge laminating of hob 2c outer fringe and holding material pipe 2d, driving motor 2a is located hob 2 c's top, driving motor 2 a's output passes through shaft coupling and hob 2c top fixed connection, motor cabinet 2b is used for supporting installing at the top of discharging pipe 2f of driving motor 2a, and be provided with the discharging pipe 2f of downward sloping on holding material pipe 2 d's the top outer fringe, be provided with the ascending inlet pipe 2e in the bottom outer fringe of holding material pipe 2d, discharging pipe 2f is connected with the feed inlet of upper guide way 5, it is connected with lower guide way 6 discharge gate to hold material pipe 2 d. When the plastics master batch during from the interior roll-off of lower guide way 6, will enter into along inlet pipe 2e and hold material pipe 2d in, the effect of rethread driving motor 2a and then drive the rotation of hob 2c for hob 2c drives the slow upward movement of plastics master batch, and rethread discharging pipe 2f roll-off, and then enter into in the upper guide way 5.

Dust absorption mechanism 3 is including inhaling material hose 3a, centrifugal fan 3b, square pipe 3c and collecting box 3d, centrifugal fan 3b is fixed to be set up the side at screening mechanism 4, hold the fixed connector that is provided with on workbin 4b, and inhale the one end of material hose 3a and the air intake connection of centrifugal fan 3b, inhale the other end of material hose 3a and hold the connector connection of workbin 4b, collecting box 3d installs the side at square pipe 3c, and the one end of square pipe 3c and the air outlet connection who inhales material hose 3a, the other end and the collecting box 3d of square pipe 3c are connected. Through centrifugal fan 3 b's effect, and then to inhaling convulsions in the material hose 3a, through holding the connector on the workbin 4b, and then will hold the dust of the plastics master batch in the workbin 4b and take out, and then make the dust enter into along square pipe 3c in collecting box 3 d.

Lower guide way 6 includes first guide box 6a, aggregate funnel 6b and pipe 6c, box 4b3 is passed to the one end of first guide box 6a, and first guide box 6a is located screening disk 4a under, aggregate funnel 6b is located first guide box 6a under the other end, and aggregate funnel 6b is fixed to be set up subaerial, the one end of pipe 6c is connected with aggregate funnel 6 b's discharge gate, the setting is inserted in hoist mechanism 2's inlet pipe 2e to the other end of pipe 6 c. After the plastic master batch passes through the screening, will fall into first guide box 6a in, rethread first guide box 6a is drawn into in the funnel 6b that gathers materials, and the effect of rethread funnel 6b collects the plastic master batch, and the rethread funnel 6 b's discharge gate enters into pipe 6c in, and rethread pipe 6c enters into the inlet pipe 2e of lifting mechanism 2.

Go up guide way 5 and include second guide box 5a, turn over a board 5b and baffle 5c, the one end of second guide box 5a is inserted and is established in box 4b3, the other end of second guide box 5a is located hoist mechanism 2's discharging pipe 2f under, and second guide box 5a is the slope setting, turn over a board 5b fixed mounting in the bottom of second guide box 5a, and turn over the top fixed connection of the bottom of board 5b and top cap 4b4, baffle 5c fixed welding is at second guide box 5a one end outer fringe top. After the material slides out from discharging pipe 2f of hoist mechanism 2, in leading-in screening mechanism 4 with the plastics master batch through the effect of second guide box 5a, carry out the screening of next time to the plastics master batch again, play the effect of support through turning over folded plate 5b to second guide box 5a, prevent through baffle 5c that the plastics master batch from advancing to and popping out in screening mechanism 4.

The working principle is as follows: when plastic master batches are required to be screened, firstly, a worker adds the plastic master batches into the screening mechanism 4, and then the vibration of the screening mechanism 4 is driven by the vibration action of the vibration motor 1d, so that the screening disk 4a in the screening mechanism 4 vibrates, and the plastic master batches vibrate along the screening disk 4a, when the diameter of the plastic master batches is larger than the width of the strip-shaped material containing gap 4a1, the plastic master batches are slowly vibrated into the first material guide box 6a on the lower guide channel 6 along a plurality of layers of the screening disk 4a, and then are drawn into the material collection funnel 6b by the first material guide box 6a, and are collected by the action of the material collection funnel 6b, and then enter the guide pipe 6c through the discharge port of the material collection funnel 6b, and then enter the feeding pipe 2e of the lifting mechanism 2 through the guide pipe 6c, and when the diameter of the plastic master batches is smaller than or is smaller than the width of the strip-shaped material containing gap 4a1, the plastics master batch will block in bar appearance material breach 4a1, and enter into the plastics master batch in hoist mechanism 2, will enter into along inlet pipe 2e and hold in the material pipe 2d, effect and then the rotation that drives hob 2c of rethread driving motor 2a, make hob 2c drive the slow upward movement of plastics master batch, rethread discharging pipe 2f roll-off, and then enter into second guide box 5a, enter into screening mechanism 4 through the effect of second guide box 5a, carry out the screening of once more to the plastics master batch, after a period, through pulling screening dish 4a, and then take out appearance workbin 4b along bar breach 4b11 with screening dish 4a, the rethread workman clears up the plastics master batch on the screening dish 4 a.

Claims

1. A plastic master batch screening device is characterized by comprising a vibration mechanism (1), a lifting mechanism (2), a dust suction mechanism (3) and a screening mechanism (4), wherein the vibration mechanism (1) is fixedly installed on the ground, the top of the vibration mechanism (1) is fixedly connected with the bottom of the screening mechanism (4), the dust suction mechanism (3) is used for sucking dust in the vibration mechanism (1) and is installed on one side of the vibration mechanism (1), the lifting mechanism (2) is positioned on one side of the screening mechanism (4) far away from the dust suction mechanism (3), the discharge end of the lifting mechanism (2) is connected with the inside of the screening mechanism (4) through an upper guide channel (5), the upper guide channel (5) is fixedly installed at the top of the screening mechanism (4), the feeding end of the lifting mechanism (2) is connected with the inside of the screening mechanism (4) through a lower guide channel (6), the lower guide channel (6) is fixedly installed at the outer edge of the bottom of the screening mechanism (4), screening mechanism (4) are including holding workbin (4b) and a plurality of screening dish (4a), a plurality of screening dish (4a) are the slope installation and hold the inboard of workbin (4b), hold the bottom of workbin (4b) and the top fixed connection of vibration mechanism (1), a plurality of bar is all seted up to the inboard of every screening dish (4a) and is held material breach (4a1), a plurality of bar is held material breach (4a1) and is followed the equidistant distribution of length direction of screening dish (4a), hold and offer bar breach (4b11) that supply screening dish (4a) to take out on workbin (4b), and hold workbin (4b) and screening dish (4a) sliding connection.

2. The plastic masterbatch screening device according to claim 1, wherein an extension plate (4a3) is fixedly arranged at the bottom of one side of the screening plate (4a), a fixing plate (4a4) is fixedly arranged at the top of the extension plate (4a3), the length direction of the fixing plate (4a4) is the same as that of the screening plate (4a), a plurality of guide posts (4a2) are fixedly arranged at the bottom of the screening plate (4a), the guide posts (4a2) are uniformly distributed in the length direction of the screening plate (4a), and an arc-shaped guide plate (4b2) for the guide posts (4a2) to slide is fixedly arranged on the material accommodating box (4 b).

3. The plastic masterbatch screening device of claim 2, wherein the bin (4b) comprises a side cover (4b1), a top cover (4b4) and a box body (4b3), the box body (4b3) is fixedly arranged at the top of the vibration mechanism (1), the arc-shaped guide plate (4b2) is fixedly arranged at the top of the box body (4b3), a feeding hole for plastic masterbatch to enter is formed in the top of the arc-shaped guide plate (4b2), the side cover (4b1) is detachably connected with the box body (4b3) through a bolt, and the strip-shaped notch (4b11) is located on the side cover (4b 1).

4. The plastic master batch screening device according to claim 3, wherein the vibration mechanism (1) comprises a vibration motor (1d), four upper spring seats (1a), a lower spring seat (1b) and a vibration reduction spring (1c), the vibration motor (1d) is fixedly arranged at the bottom of the box body (4b3), the four upper spring seats (1a) are fixedly arranged at four ends of the bottom of the box body (4b3), each lower spring seat (1b) is located at the bottom of the upper spring seat (1a), the vibration reduction spring (1c) is located between the upper spring seat (1a) and the lower spring seat (1b), and two ends of the vibration reduction spring (1c) are abutted against the upper spring seat (1a) and the lower spring seat (1 b).

5. The plastic master batch screening device according to claim 4, wherein the lifting mechanism (2) comprises a driving motor (2a), a motor base (2b), a screw rod (2c) and a material containing pipe (2d), the material containing pipe (2d) is vertically and fixedly arranged on the ground, the screw rod (2c) is positioned on the inner side of the material containing pipe (2d), the outer edge of the screw rod (2c) is attached to the inner edge of the material containing pipe (2d), the driving motor (2a) is positioned at the top of the screw rod (2c), the output end of the driving motor (2a) is fixedly connected with the top of the screw rod (2c) through a coupler, the motor base (2b) is used for supporting the driving motor (2a) and is arranged at the top of the discharging pipe (2f), a downward-inclined discharging pipe (2f) is arranged on the outer edge of the top of the material containing pipe (2d), an upward-inclined feeding pipe (2e) is arranged on the outer edge of the bottom of the material, the discharge pipe (2f) is connected with the feed inlet of the upper guide channel (5), and the material containing pipe (2d) is connected with the discharge outlet of the lower guide channel (6).

6. The plastic master batch screening device according to claim 5, wherein the dust collection mechanism (3) comprises a suction hose (3a), a centrifugal fan (3b), a square conduit (3c) and a collection box (3d), the centrifugal fan (3b) is fixedly arranged beside the screening mechanism (4), a connection port is fixedly arranged on the collection box (4b), one end of the suction hose (3a) is connected with an air inlet of the centrifugal fan (3b), the other end of the suction hose (3a) is connected with the connection port of the collection box (4b), the collection box (3d) is arranged beside the square conduit (3c), one end of the square conduit (3c) is connected with an air outlet of the suction hose (3a), and the other end of the square conduit (3c) is connected with the collection box (3 d).

7. The plastic masterbatch screening device according to claim 6, wherein the lower guide channel (6) comprises a first guide box (6a), an aggregate funnel (6b) and a guide pipe (6c), one end of the first guide box (6a) penetrates through the box body (4b3), the first guide box (6a) is located under the screening disk (4a), the aggregate funnel (6b) is located under the other end of the first guide box (6a), the aggregate funnel (6b) is fixedly arranged on the ground, one end of the guide pipe (6c) is connected with a discharge port of the aggregate funnel (6b), and the other end of the guide pipe (6c) is inserted into the feed pipe (2e) of the lifting mechanism (2).

8. The plastic masterbatch screening device according to claim 7, wherein the upper guide channel (5) comprises a second guide box (5a), a turnover plate (5b) and a baffle plate (5c), one end of the second guide box (5a) is inserted into the box body (4b3), the other end of the second guide box (5a) is located right below the discharge pipe (2f) of the lifting mechanism (2), the second guide box (5a) is arranged in an inclined manner, the turnover plate (5b) is fixedly installed at the bottom of the second guide box (5a), the bottom of the turnover plate (5b) is fixedly connected with the top of the top cover (4b4), and the baffle plate (5c) is fixedly welded at the top of the outer edge of one end of the second guide box (5 a).