CN219466684U

CN219466684U - Crushing and screening device of plastic extruder

Info

Publication number: CN219466684U
Application number: CN202223529422.7U
Authority: CN
Inventors: 陈察
Original assignee: Shanghai Siqi High Polymer Material Co ltd
Current assignee: Shanghai Siqi High Polymer Material Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-08-04
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to a plastics processing field especially relates to a broken sieving mechanism of plastics extruder, and it includes the extruder box, sets up the feeder hopper on the extruder box and sets up crushing assembly in the feeder hopper, one side that the feeder hopper was kept away from to crushing assembly is provided with the filter, the filter is used for filtering the raw materials after smashing. The extruder production efficiency is improved.

Description

Crushing and screening device of plastic extruder

Technical Field

The application relates to the technical field of plastic processing, in particular to a crushing and screening device of a plastic extruder.

Background

Most plastic products are produced by extrusion of plastic particles, and the products extruded by the extruder are mostly cylindrical long strips, and are cut into small particles by a granulator after cooling and forming by cooling water.

The existing plastic extruder comprises a feeding device, wherein the extruder box body is arranged on the extruder box body, and a crushing device is arranged in the feeding device and is used for crushing raw materials placed in the feeding device; an extrusion device is arranged in the extrusion box body, the extrusion device is usually arranged as an extrusion screw, an extrusion opening is further formed in the extrusion box body, crushed plastics are melted by heating, and then products are extruded to the extrusion opening through the extrusion screw.

In the above-mentioned related art, the raw materials is smashed through reducing mechanism after entering into feed arrangement, then reentrant melts in the device, but when the raw materials smashes inhomogeneous, can appear large granule raw materials, in order to make large granule raw materials also fully melt, need increase the time of heating at the in-process that melts to influence production efficiency.

Disclosure of Invention

In order to improve the production efficiency of extruder, this application provides a broken sieving mechanism of plastics extruder.

The application provides a broken sieving mechanism of plastics extruder adopts following technical scheme:

the utility model provides a broken sieving mechanism of plastics extruder, includes the extruder box, sets up the feeder hopper on the extruder box and sets up crushing assembly in the feeder hopper, one side that the feeder hopper was kept away from to crushing assembly is provided with the filter, the filter is used for filtering the raw materials after smashing.

Through adopting above-mentioned technical scheme, through the raw materials after smashing the subassembly, filter through the filter element, the granule raw materials can enter into through the filter element and melt in the device, and the raw materials of macroparticles can stay on the filter element to can make the raw materials size that enters into in melting the device relatively even in the course of working, also need not improve heating time when heating, thereby improve the work efficiency of plastics extruder.

Optionally, the filter element includes the horizontal part of installing in the extruder box and the tilting part of being connected with horizontal part an organic whole, one side that the horizontal part was kept away from to tilting part is close to the feeder hopper direction slope, all be provided with the filtration pore in horizontal part and the tilting part, the raw materials after smashing drops on the tilting part.

Through adopting above-mentioned technical scheme, the raw materials after smashing the subassembly falls to the slope, and the raw materials of a part granule falls from the filtration pore in, and another portion drops on the horizontal part under the effect of gravity, when using, can prevent that the raw materials stack after smashing from smashing the below of subassembly to can effectually prevent that the condition that the jam appears in the filter element from appearing.

Optionally, the clearance subassembly that is provided with because to the big granule raw materials clearance on the horizontal part above the horizontal part, clearance subassembly is including rotating screw rod, the clearance board of threaded connection on the screw rod on the extruder box and the driving piece that is used for driving screw rod forward and backward, the clearance board removes along the axis direction of screw rod, the clearance board is used for clearing up the big granule raw materials on the horizontal part, the driving piece sets up on the extruder box.

Through adopting above-mentioned technical scheme, after the large granule raw materials stays the horizontal part, the driving piece drives the screw rod and rotates, makes the screw rod drive the clearance board and removes to the clearance board clears up the large granule raw materials on the horizontal plate, prevents to appear blocking up the condition of filter.

Optionally, a discharge hole for separating large-particle raw materials from the filter element is formed in the box body of the extruder.

Through adopting above-mentioned technical scheme, under the effect of discharge gate, can conveniently discharge the big granule raw materials in the horizontal part and put out the extruder box, prevent to pile up on the horizontal part, be convenient for smash big granule raw materials through crushing subassembly again.

Optionally, the one end that the clearance board kept away from the screw rod is provided with and is used for promoting big granule raw materials from discharge gate exhaust impeller, impeller sets up the connecting portion that is vertical setting's impeller portion and level set up, one side of connecting portion is connected with the clearance board, and the other end is connected with the impeller portion, one side that the connecting portion was kept away from to the impeller portion and horizontal part surface butt, when the impeller portion breaks away from the discharge gate, big granule raw materials breaks away from the discharge gate.

Through adopting above-mentioned technical scheme, when promoting the discharge gate department discharge of large granule raw materials, the screw rod rotates, drives the clearance board of clearance board and the impeller to being close to the direction removal of discharge gate, when the impeller stretches out the discharge gate, large granule raw materials then can be discharged from the discharge gate automatically to it is more convenient when using.

Optionally, two discharge ports are formed in the extruder box body, the two discharge ports are formed in two ends of the screw rod, the pushing pieces are also arranged in two, and the two pushing pieces are symmetrically arranged on two opposite sides of the cleaning plate.

Through adopting above-mentioned technical scheme, under the effect of two pushers and two discharge gates, can make the screw rod forward and reverse rotation all clear up the large granule raw materials on the horizontal part simultaneously to it is more convenient when using.

Optionally, a material collecting barrel is arranged on the extruder box body and is used for collecting large-particle raw materials discharged from the discharge port.

Through adopting above-mentioned technical scheme, the big granule raw materials on the promotion horizontal part is followed the discharge gate and is directly entered into the collecting vessel to make things convenient for the staff to collect.

Optionally, a cover plate for sealing the discharge port is rotatably connected to the extruder box.

Through adopting above-mentioned technical scheme, under the effect of apron, can prevent at the raw materials crushing in-process that crushed raw materials from breaking away from the extruder box from the discharge gate, when needing large granule raw materials to discharge, the drive portion promotes the apron to the direction rotation of keeping away from the filter element, and the discharge gate is opened, and the large granule raw materials of drive portion promotion is discharged from the discharge gate.

Drawings

FIG. 1 is a partial structural view of a feed hopper and extruder housing of an embodiment of the present application.

Fig. 2 is a cross-sectional view of an extruder housing of an embodiment of the present application.

Fig. 3 is an enlarged view at a in fig. 2.

Reference numerals: 1. the extruder box body; 11. a feed hopper; 12. a filter hole; 13. a discharge port; 14. a cover plate; 2. a crushing assembly; 21. a crushing roller; 3. a filter; 31. an inclined portion; 32. a horizontal portion; 4. cleaning the assembly; 41. a cleaning plate; 42. a screw; 43. a driving member; 5. a pushing member; 51. a connection part; 52. a pushing part; 6. and (5) collecting a charging basket.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a broken sieving mechanism of plastics extruder. Referring to fig. 1, a crushing and screening device of a plastic extruder comprises an extruder box 1 arranged on the ground, a feed hopper 11 is arranged on the extruder box 1, an extruding device and a melting device are arranged on the extruder box 1, a crushing assembly 2 is arranged in the feed hopper 11, the crushing assembly 2 is used for crushing raw materials, the time for melting the raw materials by the melting device is reduced, the raw materials enter from the feed hopper 11, enter into the melting device after being crushed by the crushing assembly 2, and finally are extruded and produced by the extruding device.

Referring to fig. 1 and 2, the crushing assembly 2 includes two crushing rollers 21 having opposite rotation directions and a motor for driving the two crushing rollers 21 to rotate, the axes of the crushing rollers 21 are horizontally arranged, the two crushing rollers 21 are rotatably connected to the extruder box 1, and the raw materials are discharged from between the two crushing rollers 21 after being crushed; in order to make the raw materials size that enters into in the melting device even, be provided with filter member 3 in crushing roller 21 below, filter member 3 filters the raw materials after the breakage, prevents that large granule's raw materials from entering into in the melting device, causes the time increase that melts.

Referring to fig. 2 and 3, the filter element 3 includes an inclined portion 31 and a horizontal portion 32, one side of the horizontal portion 32 is connected with the inner wall of the extruder box 1, the other end is integrally formed with the inclined portion 31, one end of the inclined portion 31 away from the horizontal portion 32 is inclined towards the direction of the crushing assembly 2, the inclined portion 31 and the horizontal portion 32 are provided with vertical downward filter holes 12, the required raw materials enter the melting device through the filter holes 12 of the filter element 3, and the large-particle raw materials stay on the horizontal portion 32. In the embodiment, two filter elements 3 are arranged, the two filter elements 3 are symmetrically arranged, the inclined parts 31 on the two filter elements 3 are integrally formed, and the two inclined parts 31 are in a herringbone shape,

referring to fig. 2 and 3, the material crushed by the crushing roller 21 flows to the two inclined portions 31 to split the falling material, and a part of the falling material enters the melting device through the filter holes 12 of the inclined portions 31 and a part of the falling material enters the melting device through the filter holes 12 of the horizontal portions 32, so that the large-particle material remains on the horizontal portions 32; under the action of the inclined portion 31, the crushed raw material can be prevented from accumulating below the passage formed between the two crushing rollers 21, and the filtering of the raw material can be further accelerated.

Referring to fig. 1 and 2, in combination with fig. 3, in order to facilitate cleaning of large particulate raw materials on the horizontal portion 32, a cleaning assembly 4 is provided above the horizontal portion 32, the cleaning assembly 4 includes a cleaning plate 41, a screw 42 and a driving member 43, both ends of the screw 42 are rotatably connected to an inner wall on the extruder case 1, the cleaning plate 41 is screwed on the screw 42 and slides on the inner wall of the extruder case 1, and one side of the cleaning plate 41 away from the screw 42 is abutted on the surface of the horizontal portion 32; in order to prevent the cleaning plate 41 from rotating, a limiting block is welded on the cleaning plate 41, and meanwhile, a limiting groove is formed in the inner wall of the extruder box 1, the limiting block is slidably connected in the limiting groove, and the limiting groove is formed along the axial direction of the screw rod 42; in this embodiment, the driving member 43 is set as a servo motor, the servo motor is mounted on the outer wall of the extruder box 1, and the servo motor is connected with one end of the screw rod 42, so that the screw rod 42 is driven to rotate forward and backward, thereby driving the cleaning plate 41 to reciprocate on the horizontal portion 32, pushing the large particle raw material on the horizontal portion 32 to move towards the two ends of the horizontal portion 32, and preventing the large particle raw material from blocking the filter screen on the horizontal portion 32. In this embodiment, the cleaning assemblies 4 are provided in two groups, and two filter elements 3 are provided correspondingly.

Referring to fig. 1 and 2, two pairs of discharge ports 13 are formed in the side wall of the extruder box 1, the two pairs of discharge ports 13 correspond to the two cleaning components 4, each pair of discharge ports 13 comprises two discharge ports 13, the two discharge ports 13 are symmetrically arranged on two opposite sides of the extruder box 1, in this embodiment, the two discharge ports are arranged at two ends of a screw 42, so that the cleaning components 4 can clean large-particle raw materials on the horizontal part 32 by forward and reverse rotation of the screw 42, and large-particle impurities on the horizontal part 32 can be conveniently discharged into the extruder box 1 through the discharge ports 13; simultaneously in order to prevent raw materials from discharging from discharge gate 13 in crushing process, rotate on extruder box 1 and be connected with two apron 14, two apron 14 divide and are sealed two discharge gates 13, and in this embodiment, apron 14 rotates to be connected on the lateral wall of discharge gate 13, and the diapire of discharge gate 13 is kept away from to the axis of rotation of apron 14, makes apron 14 under the effect of gravity, can automatic shutoff discharge gate 13.

Referring to fig. 2 and 3, in order to facilitate the movement of the cleaning plate 41 to push large-particle raw materials to be discharged from the discharge port 13, a pushing member 5 is arranged on the cleaning plate 41, the pushing member 5 comprises a connecting portion 51 and a pushing portion 52, the connecting portion 51 is horizontally arranged, the pushing portion 52 is vertically arranged, the pushing portion 52 and the cleaning plate 41 are parallel, the connecting portion 51 and the pushing portion 52 are integrally formed, in this embodiment, the connecting portion 51 and the pushing portion 52 are in an inverted L shape, one end of the pushing portion 52 far away from the connecting portion 51 is abutted against the surface of the horizontal portion 32, and meanwhile, the connecting portion 51, the pushing portion 52 and the cleaning plate 41 form a cavity, and in this embodiment, the height of the pushing portion 52 is smaller than the height of the discharge port 13, and in combination with fig. 1, one side of the connecting portion 51 far away from the horizontal portion 32 is provided as an inclined plane, so that raw materials falling on the connecting portion 51 can fall on the horizontal portion 32 in time; the driving piece 43 rotates to drive the screw rod 42 to rotate, so that the screw rod 42 drives the cleaning plate 41 and the pushing part 52 to move, the pushing part 52 pushes impurities on the horizontal part 32 to move towards the direction close to the discharge hole 13, and as the cover plate 14 rotates on the extruder box 1, when the pushing part 52 moves, the cover plate 14 can be pushed to rotate towards the direction far away from the pushing part 52, then the discharge hole 13 is opened, and when the pushing part 52 extends out of the discharge hole 13, large-particle raw materials on the horizontal part 32 completely fall from the horizontal part 32, then the cleaning plate 41 moves reversely, and the cover plate 14 automatically seals the discharge hole 13 under the action of gravity.

Referring to fig. 1 and 2, in order to conveniently collect the large-particle raw material separated from the horizontal portion 32, two material receiving barrels 6 are provided on the extruder case 1, and the material receiving barrels 6 are provided below the discharge port 13 for collecting the large-particle raw material discharged from the discharge port 13, so that the large-particle raw material discharged from the horizontal portion 32 is conveniently crushed further. Meanwhile, the pushing pieces 5 are arranged on the two cleaning assemblies 4, so that large-particle impurities on the two filtering pieces 3 can be cleaned; in addition, a vibration motor is arranged on the filter element 3, and the vibration motor can accelerate the filtering speed of the filter element 3.

The implementation principle of the crushing and screening device of the plastic extruder is as follows: the raw materials crushed by the crushing assembly 2 respectively flow towards the directions of the two inclined parts 31, a part of raw materials are filtered through the filtering holes 12 on the inclined parts 31, a part of raw materials fall onto the horizontal parts 32, a part of raw materials are filtered through the filtering holes 12 on the horizontal parts 32, and large-particle raw materials are left on the horizontal parts 32, so that the raw materials entering the melting device are uniform in size, the heating time is not increased in the raw materials heating and melting process, and the production efficiency of the extruder is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a broken sieving mechanism of plastics extruder, includes extruder box (1), sets up feeder hopper (11) on extruder box (1) and sets up crushing module (2) in feeder hopper (11), its characterized in that: a filter element (3) is arranged on one side, far away from the feed hopper (11), of the crushing assembly (2), and the filter element (3) is used for filtering crushed raw materials; the filter element (3) comprises a horizontal part (32) arranged in the extruder box body (1) and an inclined part (31) integrally arranged with the horizontal part (32), one side, away from the horizontal part (32), of the inclined part (31) is inclined towards the direction close to the feeding hopper (11), and filter holes (12) are formed in the horizontal part (32) and the inclined part (31), so that crushed raw materials fall on the inclined part (31).

2. The crushing and screening device of a plastic extruder according to claim 1, wherein: the cleaning assembly (4) for cleaning large-particle raw materials on the horizontal part (32) is arranged above the horizontal part (32), the cleaning assembly (4) comprises a screw (42) which rotates on the extruder box (1), a cleaning plate (41) which is in threaded connection with the screw (42) and a driving piece (43) which is used for driving the screw (42) to rotate positively and negatively, the cleaning plate (41) moves along the axis direction of the screw (42), the cleaning plate (41) is used for cleaning the large-particle raw materials on the horizontal part (32), and the driving piece (43) is arranged on the extruder box (1).

3. The crushing and screening device of a plastic extruder according to claim 2, wherein: a discharge hole (13) for separating large-particle raw materials from the filter element (3) is formed in the extruder box body (1).

4. A crushing and screening device for a plastic extruder as claimed in claim 3, wherein: the cleaning plate (41) is provided with a pushing piece (5) for pushing large-particle raw materials on the horizontal part (32) to be discharged from the discharge hole (13), the pushing piece (5) comprises a pushing part (52) which is vertically arranged and a connecting part (51) which is horizontally arranged, one side of the connecting part (51) is connected with the cleaning plate (41), the other end of the connecting part is connected with the pushing part (52), one side, away from the connecting part (51), of the pushing part (52) is abutted against the surface of the horizontal part (32), and when the pushing part (52) is separated from the discharge hole (13), the large-particle raw materials are separated from the discharge hole (13).

5. The crushing and screening device of the plastic extruder according to claim 4, wherein: two discharge ports (13) are formed in the extruder box body (1), the two discharge ports (13) are formed in two ends of the screw rod (42), the pushing pieces (5) are also arranged in two, and the two pushing pieces (5) are symmetrically arranged on two opposite sides of the cleaning plate (41).

6. A crushing and screening device for a plastic extruder as claimed in claim 3, wherein: the extruder is characterized in that a material collecting barrel (6) is arranged on the extruder box body (1), and the material collecting barrel (6) is used for collecting large-particle raw materials discharged from a discharge hole (13).

7. The crushing and screening device of a plastic extruder according to claim 1, wherein: the extruder box (1) is rotationally connected with a cover plate (14) for sealing the discharge port (13).