CN114536712B

CN114536712B - Iron-containing impurity removing device of extruder

Info

Publication number: CN114536712B
Application number: CN202210165045.9A
Authority: CN
Inventors: 蔡国际
Original assignee: Wuhan Donghu University
Current assignee: Wuhan Donghu University
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-12-16
Anticipated expiration: 2042-02-22
Also published as: CN114536712A

Abstract

The utility model provides an extruder remove iron content impurity device sets up a plurality of distribution arrangement's little magnetic path (3) on feed bin (2) inner wall, can increase the contact chance of magnet and material, reinforcing deironing effect, and on the other hand, the side area that little magnetic path has and material flow direction difference or opposite also is showing the increase, is favorable to adsorbing and piles up iron content impurity, avoids iron content impurity to wrap up under the clamp at the material impact and mixes to the flow in.

Description

Iron-containing impurity removing device of extruder

Technical Field

The invention relates to an extruder, in particular to a device for removing iron-containing impurities of the extruder.

Background

The extruder is used for melting, shaping to the plastic granules and makes different plastic products, and in order to improve the quality of product, the plastic granules usually need dry and separate impurity processing, and extruder loading attachment is the feeding funnel, and most all become the funnel form, and during the material loading, the material directly adds in the equipment through the feeding funnel. When containing foreign matter such as metal fillings in the material, inside the metal particle gets into machines such as cartridge heater and aircraft nose of extruding machine along with plastic granules, produce the friction with the machine inner wall easily and form the damage, shorten machine life, increase the cost of machine maintenance, and mix in the product and can influence the quality of product with metal particle, reduced the competitive advantage of product in market.

Therefore, some manufacturers in the prior art design and use a feeding hopper with a permanent magnet filtering sieve, so that plastic particle raw materials pass through the feeding hopper with the permanent magnet filtering sieve, and iron impurities in the raw materials are adsorbed by utilizing the adsorbability of the magnet. The method adsorbs part of iron impurities to a certain extent, but has some disadvantages: firstly, when the material consumption is large or dust type raw materials exist in the material, the raw materials can be accumulated on a magnet sieve frame of an upper hopper, and then the continuous addition of the follow-up raw materials is blocked; secondly, when the material flows through the feed inlet, the contact surface with the magnet is small, so that impurity removal is insufficient; thirdly, the iron-containing impurities can only be adsorbed on the surface of the permanent magnet, and when the adsorbed iron-containing impurities accumulate to a certain degree or the iron content is low and the suction force is small, the iron-containing impurities can be mixed in the fluid under the impact of the fluid and enter the production equipment.

Therefore, there is a need to provide a more efficient apparatus for removing iron-containing impurities for use in an extruder, which solves the above-mentioned problems.

Disclosure of Invention

In order to solve the defects and shortcomings of incomplete impurity removal, easy backflow of impurities, easy blockage of material passages and the like of an iron removal device of a plastic extruding machine in the prior art, the invention provides the iron-containing impurity removal device of the plastic extruding machine, which can fully remove iron impurities contained in raw materials when the raw materials are added, simultaneously prevent the raw materials from blocking the material passages, and prevent the separated iron impurities from flowing back to the materials under the impact of the flow materials.

The technical scheme of the invention is as follows:

the utility model provides an extruder remove iron impurity device, includes feedwell (2) and mount, its characterized in that: the feeding barrel (2) is erected or transversely or obliquely arranged, the inner wall of the feeding barrel (2) is provided with a magnet, a feeding packing auger (4) is arranged in the feeding barrel (2), and the feeding packing auger (4) is arranged on a fixing frame.

As an embodiment of the invention, the magnet consists of a plurality of small magnetic blocks (3), and the small magnetic blocks (3) are distributed and arranged on the inner wall of the feed barrel (2).

Optionally, the small magnetic blocks (3) are arranged in a rectangular array.

Optionally, the small magnetic blocks (3) are arranged in a spiral array.

As one embodiment of the invention, the small magnetic block (3) is a prism or a cylinder.

As an embodiment of the invention, the feedwell (2) is cylindrical or cylinder-like.

As one embodiment of the invention, the feeding packing auger (4) performs up-and-down translational motion and/or rotary motion relative to the feeding barrel (2).

As an embodiment of the invention, the feeding packing auger (4) and the feeding barrel (2) rotate together.

As one embodiment of the invention, the feeding packing auger (4) is provided with magnetism and/or is inlaid with small magnetic blocks (3).

Preferably, the feeding auger (4) and/or the magnet is an electromagnet.

The technical scheme provided by the invention has the beneficial effects that:

1. the magnet sets up to arrange a plurality of little magnetic path that distribute and has shown on the one hand and has increased magnetic path and material contact chance, reinforcing deironing effect, and on the other hand, the magnetic path has and also shows the increase with the different or opposite side area of material flow direction, is favorable to adsorbing and piles up the iron content impurity, avoids the iron content impurity to wrap up back mixing to the flow material under holding in the flow material impact.

2. The small magnetic blocks are arranged on the inner wall of the feed barrel in a rectangular array, a spiral array or other arrays, the small magnetic blocks are arranged in a prism or a cylinder, and the shapes and the arrangement mode of the small magnetic blocks are favorable for enhancing the adsorption and accumulation effects of iron-containing impurities and ensuring the impurity removal effect.

3. The feeding auger is arranged in the feeding barrel, so that the material can be prevented from being blocked, more importantly, the retention time of the material in the feeding barrel can be prolonged under the stirring of the feeding auger, the contact chance with the magnet is increased, and the iron removal effect is favorably enhanced.

4. The feeding auger is provided with the magnet or is embedded with the small magnet, so that the contact chance of the magnet and the material is further increased, particularly the contact chance of the magnet and the material in the middle is increased, and the iron removal effect can be obviously improved.

5. Feeding auger and little magnetic path set up to the electro-magnet, and when the outage, the impurity that adsorbs on the magnet surface just drops naturally, has reduced the clearance time, has improved the utilization ratio of machine.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional isometric view of a three-dimensional assembly of a schematic of a feedwell according to an embodiment of the present invention;

FIG. 2 isbase:Sub>A front view,base:Sub>A top view andbase:Sub>A cross-sectional view A-A ofbase:Sub>A schematic illustration ofbase:Sub>A feedwell according to an embodiment of the present invention;

FIG. 3 is a three-dimensional isometric view of a schematic of a feed auger according to an embodiment of the present invention;

FIG. 4 is a front and top view of a schematic view of an inlet mount of an embodiment of the present invention;

FIG. 5 is a front and top view of a schematic view of an outlet mount of an embodiment of the present invention;

FIG. 6 is a cross-sectional isometric view of a three-dimensional assembly of a schematic representation of a feedwell according to another embodiment of the present invention;

fig. 7 isbase:Sub>A front view,base:Sub>A top view andbase:Sub>A-base:Sub>A sectional view ofbase:Sub>A schematic illustration ofbase:Sub>A feedwell according to another embodiment of the present invention.

In the figure: 1, an inlet fixing frame; 2, a feeding barrel; 3, a small magnetic block; 4, feeding a packing auger; and 5, an outlet fixing frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, shall fall within the scope of protection of the present invention.

As shown in figure 1, the device for removing iron-containing impurities of an extruder provided by the invention is characterized in that the inner wall of a feed barrel 2 is provided with a plurality of small magnets 3 which are distributed and arranged and used for adsorbing the iron-containing impurities in materials. Adopt the adsorption equipment of a plurality of little magnetic paths distribution arrangement, on the one hand showing and increased magnetic path and material contact chance, reinforcing deironing effect, on the other hand, the magnetic path have with material flow direction difference or opposite side area also show the increase, be favorable to adsorbing and pile up the iron content impurity, avoid the iron content impurity to wrap up under holding in the material impact back mixing to the flowing material in.

Further preferably, the small magnetic blocks 3 are arranged in a rectangular array or a spiral array, and the small magnetic blocks 3 are in a prism or cylinder shape. The preferred shape and arrangement mode of the small magnetic blocks 3 are beneficial to enhancing the adsorption and accumulation effects of iron-containing impurities and ensuring the impurity removal effect.

The invention provides a device for removing iron-containing impurities of an extruder, wherein a feeding auger 4 is also arranged in a feeding barrel 2, and the feeding auger 4 is fixed with the feeding barrel 2 through a fixing frame 1. The feeding auger 4 can rotate relative to the feeding barrel 2 and also can rotate together with the feeding barrel 2 to push the material to move spirally; the feeding auger 4 can also move up and down in a translation mode relative to the feeding barrel 2 and is used for accelerating the material flow. After the feeding auger is arranged in the feeding barrel, the blockage of materials can be prevented, more importantly, the retention time of the materials in the feeding barrel can be prolonged, the contact chance with a magnet is increased, and the iron removal effect is enhanced.

Further preferably, the maximum rotation radius of the feeding auger 4 is 1/4-3/4 of the minimum inner diameter of the feeding barrel 2, and the maximum rotation radius refers to the maximum radius of the rotation track of the feeding auger. The material positioned within the maximum rotating radius of the feeding auger 4 spirally falls along the surface of the feeding auger, and the falling speed is lower, so that the material is beneficial to adsorbing iron-containing impurities; the material outside the maximum rotation radius of the feeding auger 4 falls vertically along the feeding barrel, and the falling speed is high, so that the material is not beneficial to adsorbing iron-containing impurities. Therefore, the larger the maximum radius of rotation of feed auger 4, the more advantageous it is to adsorb iron-containing impurities, but at the same time, the lower the feed rate, and in view of the above, it is preferable to set the maximum radius of rotation of feed auger 4 to 1/4 to 3/4 of the minimum inner diameter of feed barrel 2.

Referring to fig. 7, the device for removing iron-containing impurities of the extruder of the invention can also be provided with a feeding auger 4 with magnetism, or made of magnetic material, or embedded with small magnetic blocks 3 on the surface. The feeding auger with magnetism can adsorb the iron-containing impurities of the materials, is particularly favorable for adsorbing the iron-containing impurities of the materials in the middle, and further improves the iron removal effect of the device.

Further preferably, the magnetic materials of the small magnetic blocks 3 and the feeding auger 4 are arranged to be electromagnets, so that impurities adsorbed on the surface of the magnetic bodies naturally fall off when the power is off, the cost of manual cleaning is reduced, and the working efficiency is improved.

Claims

1. The utility model provides an iron impurity removing device of extruder, includes feedwell (2), its characterized in that: the inner wall of feed cylinder (2) is equipped with the magnet, the magnet comprises a plurality of little magnetic path (3), little magnetic path (3) distribution is arranged the inner wall in feed cylinder (2), feed cylinder (2) middle part is fixed with feeding auger (4), little magnetic path (3) are arranged or spiral array according to rectangular array, the maximum radius of rotation of feeding auger (4) is 1/4-3/4 of the minimum internal diameter of feed cylinder (2), translation and/or rotary motion about feeding auger (4) is done for feed cylinder (2), rotary motion is done together to feeding auger (4) and feed cylinder (2), little magnetic path (3) are prism or cylinder, the both ends of feed cylinder (2) are equipped with import mount (1) and export mount (5) respectively, install respectively on import (1) and export electro-magnet (5) at the both ends of feeding auger (4), feeding auger (4) have magnetism and/or inlay and have little magnetic path (3), feeding auger (4) and little magnetic path (3) mount (3) or little magnetic path (3) are installed respectively.