CN212312720U

CN212312720U - Filtering device for plastic extruder

Info

Publication number: CN212312720U
Application number: CN201922292529.6U
Authority: CN
Inventors: 刘小英; 谯彪; 黄洪; 邓柔桦; 杨亚军; 杨建国
Original assignee: Chengdu Qingshan Likang Pharmaceutical Co Ltd
Current assignee: Chengdu Qingshan Likang Pharmaceutical Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2021-01-08
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a filter equipment for plastics extruder, including the perforated plate, the discharge end of perforated plate is provided with a plurality of endocentric annular recesses, and the recess divide into a plurality of drainage layers with the discharge end of perforated plate from inside to outside, is provided with a plurality of drainage grooves that run through the perforated plate both ends on the side on drainage layer, and drainage groove place straight line is parallel with the axis of perforated plate. This device can effectively cushion spiral motion's plastics, the drainage, and the rethread is moulded the pressure effect and is become linear motion with it, and the device can carry out the drainage to plastics when guaranteeing extrusion pressure, reduces its residue at filter equipment.

Description

Filtering device for plastic extruder

Technical Field

The utility model relates to a plastics extruding machine field, concretely relates to a filter equipment for plastics extruding machine.

Background

The plastic extruder is the main production equipment in the plastic extrusion molding process. The main machine of the plastic extruder is an extruding machine which consists of an extruding system, a transmission system and a heating and cooling system. After the plastic raw materials are put into the hopper, the plastic raw materials are plasticized into uniform melt in the machine barrel through the extrusion system, pressure is formed under the action of rotation of the screw, and the melt is continuously rotated and extruded out of the extruder head through the established pressure. The head of the plastic extruder is provided with a heater and a forming die, a filtering device is arranged between the forming die and the machine barrel, and the filtering device is provided with a plurality of small holes.

Because the plastic raw material contains metal particles or other impurities, especially the regenerated plastic raw material contains more metal particles and impurities, the purity of the plastic is reduced, and the product quality is influenced; and metal particles or other impurities easily cause the blockage of the filtering device, and the filtering device needs to be stopped to be cleaned or replaced in time, so that the working efficiency is influenced, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the filter equipment of current extruding machine blocks up easily, and cleaning efficiency is low, influences the availability factor, and aim at provides the filter equipment who is used for plastic extruder, solves the problem that filter equipment blockked up.

The utility model discloses a following technical scheme realizes:

a filter equipment for plastics extruder, including the perforated plate, the discharge end of perforated plate is provided with a plurality of concentric annular recesses, and the recess divide into a plurality of drainage layers with the discharge end of perforated plate from inside to outside, is provided with a plurality of drainage grooves that run through the perforated plate both ends on the side on drainage layer, and the drainage groove place straight line is parallel with the axis of perforated plate.

Further, this device is when using, discharge end at the perforated plate is provided with a plurality of annular drainage layers, and set up the drainage groove that runs through the perforated plate on the drainage layer, many drainage grooves on perforated plate surface, can be effectual with screw motion's plastics buffering, the drainage, become linear motion with it under the effect of extrusion pressure simultaneously, the device is when guaranteeing extrusion pressure, can carry out the drainage to plastics, the in-process of drainage has controlled the velocity of flow of plastics, prevent that it from piling up, reduce its residue at filter equipment, and then can effectually avoid the problem of jam.

Simultaneously, the discharge end of perforated plate is the annular structure that a plurality of centre of a circle set up, and when using, more be favorable to controlling the velocity of flow of plastics when flowing like this, has increased the space between discharge end and the filter screen, and then when filtering, can more be favorable to the quick filtration of plastics, avoids blockking up, further improvement filtration efficiency.

Furthermore, a support ring is sleeved outside the porous plate, a first through hole, a second through hole and a third through hole which are communicated with each other are sequentially arranged in the support ring from top to bottom, and the first through hole, the second through hole and the third through hole penetrate through two ends of the porous plate and are gradually reduced in diameter;

the discharge end of the porous plate is connected with a filter screen, the discharge end of the porous plate is positioned in the second through hole of the support ring, and the feed end of the porous plate is positioned in the first through hole; the filter screen is pressed by the perforated plate and the third through hole, and the edge of the filter screen is fixed in the second through hole.

In the existing filtering device, only the perforated plate and the filtering net are connected to form the filtering device, after the structure of the perforated plate is improved, a supporting ring structure for fixing the perforated plate and the filtering net is further added, when in use, the first through hole, the second through hole and the third through hole with the diameters being reduced in sequence are connected, so that the feed end of the porous plate is positioned at the first through hole, the drainage groove part for increasing the plastic circulation channel is positioned in the second through hole, the filter screen is contacted with the discharge end of the porous plate and is propped between the third through hole and the second through hole through the diameter difference between the second through hole and the third through hole, so that the second through hole and the third through hole press the edge of the filter screen when in use, and then can effectually avoid plastics to get into the edge of filter screen when filtering, and then reduced the production of black material, improved filterable efficiency and quality.

Secondly, the filter screen is preferably a metal filter screen. The metal material is selected, so that the filtering efficiency is better facilitated, and the long-term use is more convenient.

On this basis, set up the recess into isosceles triangle slot. Therefore, the distribution and the arrangement of the drainage grooves are more facilitated, and the included angle between the inclined plane of the groove and the plane where the porous plate is located is 60 degrees. The diameter of the drainage groove is 0.5 cm. And the circulation of plastics can be facilitated, and the drainage and filtration efficiency can be improved.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

this device can effectively cushion spiral motion's plastics, the drainage, and the rethread is moulded the pressure effect and is become linear motion with it, and the device can carry out the drainage to plastics when guaranteeing extrusion pressure, reduces its residue at filter equipment. The plastic extruder has the advantages of simple structural design, convenience and safety in processing and manufacturing, convenience in cleaning and replacement, capability of effectively reducing black materials and filtering impurities, reducing the cleaning frequency of disassembly, and prolonging the continuous operation time of plastics on the plastic extruder. The material utilization rate is improved, and the plastic waste is reduced.

Meanwhile, the device consists of two parts, so that the edge of the metal filter screen can be pressed when the metal filter screen is installed, the metal filter screen is kept flat, the metal filter screen is prevented from falling off, and the installation efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic diagram of a multi-well plate configuration;

FIG. 2 is a schematic sectional view of a perforated plate;

FIG. 3 is a side view of the support ring;

fig. 4 is a plan view of the support ring.

Reference numbers and corresponding part names in the drawings:

the drainage structure comprises 1-a porous plate, 2-a drainage layer, 3-drainage grooves, 4-a support ring, 5-a first through hole, 6-a second through hole and 7-a third through hole.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example 1

As shown in fig. 1-2, the utility model discloses a filter equipment for plastics extruder, including perforated plate 1, the discharge end of perforated plate 1 is provided with a plurality of endocentric annular recesses, and the recess divide into a plurality of drainage layers 2 with the discharge end of perforated plate 1 from inside to outside, is provided with a plurality of drainage grooves 3 that run through 1 both ends of perforated plate on the side of drainage layer 2, and drainage groove 3 place straight line is parallel with the axis of perforated plate 1.

In figure 1, a plurality of annular grooves are formed downwards on the discharge end of a porous plate 1, the grooves form a drainage layer 2, and a plurality of drainage grooves 3 are formed in the drainage layer 2 to form the structure.

Example 2

On the basis of the embodiment 1, as shown in fig. 3-4, a support ring 4 is sleeved outside a porous plate 1, a first through hole 5, a second through hole 6 and a third through hole 7 which are communicated with each other are sequentially arranged in the support ring 4 from top to bottom, and the first through hole 5, the second through hole 6 and the third through hole 7 penetrate through two ends of the porous plate 1 and gradually reduce the diameter;

the discharge end of the porous plate 1 is connected with a filter screen, the discharge end of the porous plate 1 is positioned in the second through hole 6 of the support ring 4, and the feed end of the porous plate 1 is positioned in the first through hole 5; the filter screen is pressed by the perforated plate 1 and the third through hole 7, and the edge of the filter screen is fixed in the second through hole 6.

Example 3

On the basis of the embodiment 2, the filter screen is a metal filter screen. The groove is an isosceles triangle groove. The included angle between the inclined plane of the groove and the plane where the porous plate 1 is located is 60 degrees. The diameter of the drainage groove 3 is 0.5 cm. The grooves are isosceles triangular grooves so that the drainage channels 3 pass through the sides of the grooves when formed.

After the plastic raw materials are put into the hopper, plasticize into even fuse-element through the extrusion system in the barrel to form pressure under the rotatory effect of screw rod, the pressure of establishing is the fuse-element continuous rotation extrusion aircraft nose, and the feed end and the aircraft nose of support ring 4 and perforated plate 1 are connected, and the discharge end and the filter screen of perforated plate 1 are connected with forming die, and when filtering, plastics pass through drainage groove 3 in the filter screen, then flow through the filter screen.

The support ring 4 is used for fixing the perforated plate 1 and the filter screen, the third through hole 7 of the filter screen and the edge of the filter screen are pressed by the perforated plate 1, the filter screen is effectively kept flat, the filter screen is prevented from falling off, and the installation efficiency is improved.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A filter equipment for plastics extruder, its characterized in that, including perforated plate (1), the discharge end of perforated plate (1) is provided with a plurality of concentric annular recesses, and the recess divide into a plurality of drainage layers (2) with the discharge end of perforated plate (1) from inside to outside, is provided with a plurality of drainage grooves (3) that run through perforated plate (1) both ends on the side of drainage layer (2), and drainage groove (3) place straight line is parallel with the axis of perforated plate (1).

2. The filtering device for the plastic extruder according to claim 1, wherein a support ring (4) is sleeved outside the perforated plate (1), a first through hole (5), a second through hole (6) and a third through hole (7) which are communicated with each other are sequentially arranged in the support ring (4) from top to bottom, and the first through hole (5), the second through hole (6) and the third through hole (7) penetrate through two ends of the perforated plate (1) and are gradually reduced in diameter;

a filter screen is connected to the discharge end of the porous plate (1), the discharge end of the porous plate (1) is positioned in the second through hole (6) of the support ring (4), and the feed end of the porous plate (1) is positioned in the first through hole (5); the filter screen is pressed by the porous plate (1) and the third through hole (7) and the edge of the filter screen is fixed in the second through hole (6).

3. The filtering apparatus for a plastic extruder as claimed in claim 2, wherein the filtering mesh is a metal filtering mesh.

4. The filtering device for plastic extruders of claim 1 wherein the grooves are isosceles triangular grooves.

5. A filter unit for plastic extruders according to claim 4, characterized in that the included angle between the inclined plane of the groove and the plane of the breaker plate (1) is 60 degrees.

6. The filtering device for plastic extruders according to claim 1, characterized in that the diameter of the drainage groove (3) is 0.5 cm.