KR101486982B1 - Crusher for fluororesin scrap - Google Patents

Abstract

The present invention relates to a scrapping apparatus for scrap of fluororesin, which is capable of preventing the adsorption of foreign matter in the production of a regenerated raw material by pulverizing the scrap of fluororesin, and a fluororesin capable of producing a high quality fluororesin regenerated raw material having uniform particles And to provide a scraping device for scrap.
The present invention comprises a crushing section (100) for crushing supplied waste scrap; At least one electrostatic precipitator 200 installed in the crushing unit 100; An iron scrap removing unit 300 formed at an outlet of the crushing unit 100 for sorting iron foreign materials mixed with the crushed material by using a magnet; A transfer pipe 410 extending downward from the discharge port of the crushing unit 100 to form a transfer passage for the scrap crushed material and sorting the scrap crushed material by particle size using a mesh network, A vibration motor 420 for applying vibration to the scrap material 410 and a recovery container 430 for sorting and recovering the scrap particles discharged through the transfer pipe 410 according to particle size; .

Description

TECHNICAL FIELD [0001] The present invention relates to a crusher for fluororesin scrap,

The present invention relates to a scraping apparatus for a scrap of fluororesin, and more particularly, to a scraping apparatus for scraping fluororesin scrap including a structure for removing static electricity in a crushing process and for removing metal foreign substances from a scrap, The present invention relates to a scraping apparatus for scrap of fluororesin.

Generally, during extrusion molding or injection molding to produce a plastic product having a predetermined shape using a plastic raw material, that is, a molded product, a scrap including a defective product incidentally occurs with the product.

Such scrap resin can be discarded, the scrap resin can be pulverized for the purpose of resource recycling, and then reused with the virgin material, thereby reducing the raw material cost.

Due to its excellent heat resistance, chemical resistance and high purity, fluorine resin is widely used in the semiconductor field as well as in the manufacturing and supply of chemical liquids, as well as peripheral component materials such as carriers, joints, tubes and quadratic chambers.

In the process of molding a plastic product using such a fluororesin, scrap is generated, and such scrap is crushed and reused.

However, scrap of such conventional plastic molded articles and recycled raw materials for defective products are obtained by crushing scrap and defective products and using the pulverized product as it is, thereby causing coarse particles and fine particles that exceed or fall below the particle size range of raw materials used in the plastic molding machine The mixing ratio and uniformity of the raw materials due to the coarse particles and the fine particles are limited and the use of the regenerated raw materials having such uneven particle size increases the defective rate of the product due to the generation of pores and the like .

In addition, in the process of pulverizing fluororesin, static electricity is frequently generated. Such static electricity is adsorbed to the crushed product after boiling foreign matters around the product, and there is a problem that it appears as black spots or soot in the extrusion process.

DISCLOSURE Technical Problem Accordingly, the present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a fluororesin regeneration raw material having uniform particles, The present invention has an object of providing a scraping device for scrap of fluororesin which can be manufactured.

According to an aspect of the present invention, there is provided an apparatus for crushing waste scrap, comprising: a static eliminator such as an ionizer formed in an apparatus for crushing scrap; and a scrap removing unit using a magnet at a site where the scrap is discharged, And a first mesh pipe and a second mesh pipe having different mesh sizes are formed in the transfer passage through which the crushed material is discharged, thereby selecting only a crushed particle of an appropriate size. do.

According to the crushing apparatus for a scrap of a fluororesin scrap according to the present invention, it is possible to remove static electricity when crushing a resin scrap, and to obtain a high-quality recycled resin by sorting iron foreign matter.

In addition, the present invention also has the effect of obtaining a high quality recycled resin having a uniform particle size by sorting the large particle crushed material and the finely pulverized finely crushed material so as not to mix with the recycled resin object.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall schematic view showing a resin scrap crushing apparatus according to the present invention; Fig.
Fig. 2 is an enlarged perspective view of the main part showing the constitution of the lump conveyor in the resin scrap crusher according to the present invention.
3 is a photograph showing a combined structure of a rotary cutter and a fixed cutter in a resin scrap crusher according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall schematic view showing a resin scrap crushing apparatus according to the present invention; Fig.

As described above, the structure of the resin scrap crushing apparatus according to the present invention mainly includes the crushing unit 100, the electrostatic precipitator 200, the iron scrap removing unit 300, and the crushing and collecting unit 400 .

The crushing unit 100 includes a crushing housing 110 for crushing the supplied scrap and providing a space for receiving and crushing the scrap, a crushing unit 110 installed inside the crushing housing 110, A fixed cutter 130 integrally protruding from the inner side of the crushing housing 110 toward the rotary cutter 120 and a motor 130 for rotating the rotary cutter 120, And driving means (not shown).

The crushing housing 110 has an upper portion opened to form a waste scrap input port 111 and a lower portion to form a discharge port 112 for discharging the scrap ruptured material and a bottom surface formed to be inclined toward the discharge port 112 So that the crushed scrap is slid and moved by gravity.

The rotary cutter 120 includes a plurality of cutting blades 122 spaced apart from each other in the axial direction on a rotary shaft 121 disposed to be rotatable within the shredding housing 110, And a plurality of cutting blades 122 integrally formed with the rotating shaft 121 when the rotating shaft 121 rotates is crushed.

The fixed cutter 130 is integrally projected from the inner wall of the crushing housing 110 and protrudes toward the rotary cutter 120. The fixed cutter 130 is disposed between the cutting blades 122 spaced apart from each other, So that the fracture effect is improved.

The static eliminator 200 absorbs static electricity generated from the crushing process of the resin scrap inside the crushing housing 110 by installing at least one static eliminating ionizer device around the crushing housing 110.

The iron scrap removing unit 300 includes a bending iron scrap removing plate 310 forming a stopping jaw at a side adjacent to the discharge opening 112 of the crushing housing 110 and a magnetic force And a magnet portion 320 for applying magnetism.

The iron scrap removing plate 310 is made of a metal material so as to be magnetized from a magnet to generate a magnetic force. The metal scrap removing plate 310 is formed by bending a protruding hook to protrude upward, So that the speed is relaxed and the collection of iron foreign substances is made easy. Preferably, the iron scrap removing plate 310 is bent 30 to 45 degrees upward from the bottom surface from which the scrap is discharged, thereby forming a locking protrusion such as a hill so as to prevent foreign matter So that it can be easily removed.

The magnet part 320 is disposed on either side of the crushing housing 110 or magnetized by being formed integrally with the iron scrap removing plate 310 to transmit strong magnetic force to the scrap removing plate 310, It is preferable that the iron scrap removing plate 310 is magnetized by generating a magnetic force of 2,500 G (Gauss) to easily collect iron foreign matter from the discharged crushed material. The magnet portion 320 may be an electromagnet or a permanent magnet Can be applied without discrimination.

The scrap recovery unit 400 divides the scrap rupture extending and extending from the discharge port 112 according to the size of the particles. The rupture recovery unit 400 extends downward from the discharge port 112 to form a transfer passage of the scrap rupture A recovery vessel 430 for sorting and recovering the scrap particles discharged through the transfer pipe 410 according to particle size, a vibration motor 420 for applying vibration to the transfer pipe 410, .

The disintegration conveying pipe 410 extends downward from the discharge port 112 to convey the disintegrated material by gravity slip. The first and second mesh pipes 411 and 411, which are mesh networks of different sizes, (412).

A second mesh pipe 412 is accommodated in the inside of the differential collection pipe 413 and a second mesh pipe 412 is disposed inside the second mesh pipe 412 The second mesh pipe 412 is formed of a mesh having a size of 140 to 200 mesh size and the first mesh pipe 411 is formed of a mesh having a mesh size of 15 to 25 mesh, So that the particles of different particle sizes can be sorted and recovered. Preferably, the mesh of the second mesh pipe 412 is composed of a mesh net having a size of 2 mm x 2 mm, which is suitable for sorting the product best. The mesh of the first mesh pipe 411 is a grid of 6 mm x 6 mm The net is good for the best product selection.

The vibrating motor 420 is provided at one side of the differential collecting pipe 413 installed at the outermost side to apply vibration to the conveying pipe 410 to improve the collection and sorting performance. It is preferable to be configured to be able to apply vibration.

The recovery container 430 separates scrap fragments discharged through the first mesh pipe 411, the second mesh pipe 412 and the differential collection pipe 413 according to the particle size. The first mesh pipe 411, the second mesh pipe 412, A refuse disposal recovery tank 431 at the end of the second mesh pipe 411 and a passing disposal recovery tank 432 at the end of the second mesh pipe 412 and a particulate recovery tank 433 ) Are provided so that the crushed materials having different particle sizes can be recovered for each use.

The crushing apparatus for scrap of the present invention having the above-described structure operates as follows.

First, when fluorocarbon waste scrap is injected into the crushing housing 110 from the waste scrap inlet 111, the waste scrap is broken between the rotary cutter 120 and the fixed cutter 130 as the rotary cutter 120 rotates , The scrap rubble accumulated on the sloped floor slides and moves toward the discharge port 112.

At this time, at least one electrostatic charge removing unit 200 is installed around the crushing housing 110 to remove static electricity that may occur during the internal crushing process, thereby preventing foreign matter from flowing due to static electricity, thereby improving the quality of the product.

The iron scrap removing plate 310 disposed at one side of the discharge port 112 of the crushing housing 110 is magnetized by receiving a strong magnetic force from the magnet unit 320 so that the iron scrap removing plate 310 can adsorb iron foreign substances.

All the scrap particles discharged to the discharge port 112 of the crushing housing 110 pass through the first mesh pipe 411. The first mesh pipe 411 has a mesh size of 15 to 25mesh, The first screening process is performed. Here, the crushed material that has passed through the net is dropped into the second mesh pipe 412, and the crushed material that has not passed through the net of the first mesh pipe 411 is crushed again, and is received in the refolding object collecting container 431.

A second mesh pipe 412 is formed outside the first mesh pipe 411 and a second mesh pipe 412 having a mesh size of 140 mesh to 200 mesh is connected to the first mesh pipe 411, ) In the second screening process. Here, the crushed material that has passed through the net falls to the fine particle recovery pipe 413, the crushed material that does not pass through the net of the second mesh pipe 412 is selected as the crushed material of the optimum particle suitable for the standard, .

The fine particle recovery pipe 413 is formed outside the second mesh pipe 412 and the fine particle material that has passed through the net of the second mesh pipe 412 is a particle that is too small to be suitable for melt molding It is judged to be an object of nonconformity and is accommodated in the particulate collection container 433.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. And can be modified and changed.

100: crushing section 110: crushing housing
111: waste scrap inlet 112: outlet
120: rotary cutter 121: rotary shaft
122: cutting blade 130: stationary cutter
200: static eliminator 300: iron scrap removal
310: iron scrap removing plate 320: magnet portion
400: crushed material collecting part 410: crushed material conveying pipe
411: first mesh pipe 412: second mesh pipe
413: Differential recovery pipe 420: Vibration motor
430: Recovery container 431: Re-crushing target recovery container
432: Passed lump recovering column 433: Particulate collecting column

Claims (5)

A crushing part (100) for crushing the supplied waste scrap; At least one electrostatic precipitator 200 installed in the crushing unit 100; An iron scrap removing unit 300 formed at an outlet of the crushing unit 100 for sorting iron foreign materials mixed with the crushed material by using a magnet; A transfer pipe 410 extending downward from the discharge port of the crushing unit 100 to form a transfer passage for the scrap crushed material and sorting the scrap crushed material by particle size using a mesh network, A vibration motor 420 for applying vibration to the scrap material 410 and a recovery container 430 for sorting and recovering the scrap particles discharged through the transfer pipe 410 according to particle size; , ≪ / RTI >
The crushing unit 100 is formed with an open top to form a waste scrap input port 111 and a discharge port 112 to discharge scrap from the bottom of the crushing unit 100. The bottom surface of the crush unit 100 is formed to be inclined toward the discharge port 112 A crushing housing (110); A rotary cutter 120 having a plurality of cutting blades 122 spaced apart from each other in the axial direction on a rotary shaft 121 arranged to be rotatable within the shredding housing 110; A stationary cutter 130 disposed between the cutting edges 122 of the rotary cutter 120 which are integrally projected from the inner wall of the crushing housing 110 and are spaced apart from each other; And driving means for rotating the rotary cutter 120,
The iron scrap removing unit 300 is formed of a metal scrap which is bent upward in a range of 30 to 45 degrees from a bottom surface of a discharge port through which the scrap is discharged, (310); And a magnet part (320) for magnetizing the iron scrap removing plate (310) by generating a magnetic force of 2,000 to 2,500 G (Gauss)
The rupturing material transfer pipe 410 is formed of a mesh having a size of 15 to 25 meshes, and has a first mesh pipe 411 for primary sorting according to particle size; A second mesh pipe 412 accommodating the first mesh pipe 411 inside and having a mesh size of 140 to 200 mesh size and performing secondary sorting according to the particle size; And a differential collection pipe (413) which receives the second mesh pipe (412) inside and does not form a mesh network.
delete delete delete The method according to claim 1,
The mesh of the second mesh pipe 412 is formed of a grid mesh having a size of 2 mm x 2 mm and the mesh of the first mesh pipe 411 is formed of a grid mesh having a size of 6 mm x 6 mm,
The recovery container 430 includes a re-disintegration object collection tube 431 disposed at the end of the first mesh pipe 411, a passed disposal material collection tube 432 disposed at the end of the second mesh pipe 412, And a fine particle recovery cylinder (433) disposed at the end of the differential recovery pipe (413), whereby the scrap lumps can be sorted and recovered by particle size.

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