CN103862592A

CN103862592A - Plastic smashing device

Info

Publication number: CN103862592A
Application number: CN201410086141.XA
Authority: CN
Inventors: 魏静; 陈大兵
Original assignee: Dalian University of Technology
Current assignee: Dalian University of Technology
Priority date: 2014-03-11
Filing date: 2014-03-11
Publication date: 2014-06-18

Abstract

The invention discloses a plastic smashing device, which belongs to the technical field of plastic processing machinery and is used for recovering waste plastic and recycling leftover materials of factories. The plastic smashing device mainly comprises a hopper, an upper tank body, a first fixed cutter, a lower tank body, a support, a material storage tank, a base, a screen mesh, a second fixed cutter, a rotating shaft, metal blocks and movable cutters. A spiral groove is formed in the cylindrical rotating shaft of the plastic smashing device; the metal blocks are welded in the groove; the movable cutters are connected with the metal blocks to form a whole body through bolts. The plastic smashing device is capable of continuously cutting and smashing waste plastic when in work, is high in efficiency, has a useful effect, and can be widely used for processing the waste plastic. Besides, as each movable cutter is provided with four cutter heads, when a working cutter head is worn too bad to use, another cutter head which is not worn yet can be used to continue cutting just by means of re-adjusting the cutting tool, so that the service life of the cutting tool is prolonged greatly, the use cost of the cutting tool is lowered, and the cutting tool is saved.

Description

A kind of plastic crushing device

Technical field

The invention belongs to technical field of plastic processing machinery, particularly a kind of plastic crushing device, for the recycling of waste plastic regeneration and factory's leftover pieces.

Background technology

Plastics, as material common in a kind of daily life, play a very important role in fields such as packaging for foodstuff, agricultural, electrical equipment industry, chemical industry.In recent years, along with developing rapidly and increase day by day and the population expansion of city size of China of plastics industry, waste plastic is also increasing, and has brought problems, as restriction sustainable development, affect waste management, pollution environment for human survival etc.For solving the problems such as the pollution of waste plastic to environment, simultaneously for alleviating the nervous supply status of raw material resin, reduce the consumption of resin and reduce goods cost, the recycling of waste plastic has been become to a kind of important approach, its main technique is that waste plastic goods are through separation screening technique, by cohesiveness and the intermolecular active force of outside destroy material inside, bulky grain is become to granule, material is after break process, still there is good performance, to meet the technical requirements such as wire drawing, trombone slide, injection moulding.

Plastic breaker is the most widely used basic equipment of realizing plastic crushing, is mainly made up of parts such as hopper, stationary knife, moving knife, screen cloth, material storing box.In the material being broken, having some is toughness (as PE, PP, SPVC), and some is fragility (as HPVC, PS); Some specific areas (surface area of unit mass) large (as hollow tube, profile shapes), some specific areas little (as solid bar body); Have plenty of bulk material, have plenty of cobbing etc., these different kinds and the character of waste plastic, make disintegrating machine should have versatility in structure and operation.At present, in plastic recycling, the plastic crusher cutter that is generally used for shredded plastic is to adopt a common iron manufacture, cutter is the one-piece construction that blade directly processes on cutter hub, on cutter hub, have elongated hole or U font hole, for cutter being fixed on to tool-post structure and tool fixing frame.In the process of plastic crushing, the common damage mode of cutter blade has wearing and tearing or is beaten scarce, blade wearing and tearing belong to the normal damage mode of cutter, but owing to inevitably can have the hard ware material such as iron nail, crushed stone in waste plastic, thoroughly remove if failed in the upper track sieving technology of shredded plastic, cutter is in the process engineering of plastic crushing, running into these hard articles will there is blade and beaten scarce phenomenon, when cutter heavy wear or beaten scarce after, need to change monoblock cutter or the cutting edge of again polishing.There is the cutter of wearing and tearing in sharpening, especially beaten scarce cutting edge roundness, need to spend a large amount of human and material resources, and cutting edge roundness has all passed through Quenching Treatment conventionally, sharpening cutting edge will make it that annealing phenomenon occurs, and reduce edge hardness and anti-wear performance, shorten cutter life, and solid tool sharpening uses certain width and will scrap, cause the waste of cutter material and fund.

Find by consulting Patents data: in patent CN2555095Y, propose a kind of plastic breaker, on body inwall, be fixed with stationary knife, in rotating shaft, there is moving knife, below is provided with screen cloth, the oblique upper of rotating shaft has broken blade row, under broken blade row, has striker plate, and this crusher machine ability is strong, noise is low, but its continuous cutting ability is poor; A kind of multiple cutter power saving plastic pulverizer has been proposed in patent CN2159831Y, its rotating knife also distributes twist, but is not difficult to find to only have a cutter head on its each rotary cutter by observation, can not use once wear up to, just need to again change cutter, and can not realize the saving of cutter.

Summary of the invention

For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of plastic crushing device.

A kind of plastic crushing device, this device comprises hopper 1, upper box 2, the first stationary knife 3, lower box 4, support 5, material storing box 6, base 7, screen cloth 8, the second stationary knife 9, rotating shaft 10, metal derby 11, moving knife 12, bolt 13, bearing 14, screw 15, bearing (ball) cover 16.The top of upper box 2 is connected with hopper 1, the bottom of upper box 2 is connected with lower box 4, screen cloth 8 is installed in lower box 4 bottoms, and support by support 5, between upper box 2 and lower box 4, rotating shaft 10 is installed, rotating shaft 10 is supported by bearing 14, and bearing (ball) cover 16 is connected with upper box, lower box by screw 15, in the groove distributing twist in rotating shaft 10, have metal derby 11, moving knife 12 is connected with metal derby 11 by bolt 13.The first stationary knife 3 and the second stationary knife 9 are arranged on the wall junction between upper box 2 and lower box 4.Whole device is fixed on base 7, and is placed with material storing box 6 above base 7, is used for holding broken particle.

Wherein, each moving knife 12 has four cutter heads.

When work, moving knife 12 is along with rotating shaft 10 high-speed rotation, the material piece being added by hopper 1 is under the effect of gravity and other motive forces, enter the region between locular wall and rotating shaft 10, large material piece driven knife 12 is squeezed on the wall of upper box 2 and cuts, little fragment is sheared in the gap between moving knife 12 and the first stationary knife 3, the material being cut falls into after lower box 4, size be less than screen cloth 8 screen size just fall into material storing box 6, driven knife 12 is scraped the second stationary knife 9 places by the material that size is large, and further shear.So repeatedly, until expect that piece all enters in material storing box 6 by screen cloth 8.

The invention has the beneficial effects as follows:

1, on cylinder-shaped shaft, have the groove distributing twist, and in groove, be welded with metal derby, moving knife is linked together by bolt and metal derby, when work, can realize the continuous cutting to waste plastic, broken, respond well, this outer shaft fix a cutting tool distribute more, if the material specific area being broken is little or for small size fragment, no matter toughness or fragile material, all can increase production efficiency, in addition in the time that the material specific area being broken (surface area of unit mass) is large, to toughness material, can effectively enhance productivity equally, save energy,

2, cutter structure is simple, replacing cutter head is convenient, each has four cutter heads above moving knife, in the time that work tool bit abrasion extremely can not use, only need suitable loose bolts, readjust cutter, proceed cutting with unworn cutter head still, until all cutter heads all wear up to the cutter more renewing again can not use time, this cutter structure has improved the service life of cutter greatly, reduce the use cost of cutter, and can save cutter.

Accompanying drawing explanation

Fig. 1 is plastic crushing device schematic diagram.

Fig. 2 is moving knife structural representation.

Fig. 3 is that breaker is along upper lower box composition surface cutaway view.

In figure: 1 hopper; 2 upper boxes; 3 first stationary knifes; 4 lower boxes; 5 supports; 6 material storing box; 7 bases; 8 screen clothes; 9 second stationary knifes; 10 rotating shafts; 11 metal derbies; 12 moving knife; 13 bolts; 14 bearings; 15 screws; 16 bearing (ball) covers.

The specific embodiment

Illustrate enforcement of the present invention below in conjunction with technical scheme and Figure of description.

As shown in Figure 1, Figure 2, Figure 3 shows, this plastic crushing device comprises hopper 1, upper box 2, the first stationary knife 3, lower box 4, support 5, material storing box 6, base 7, screen cloth 8, the second stationary knife 9, rotating shaft 10, metal derby 11, moving knife 12, bolt 13, bearing 14, screw 15, bearing (ball) cover 16.The top of upper box 2 is connected with hopper 1, the bottom of upper box 2 is connected with lower box 4, screen cloth 8 is installed in lower box 4 bottoms, and support by support 5, between upper box 2 and lower box 4, rotating shaft 10 is installed, rotating shaft 10 is supported by bearing 14, and bearing (ball) cover 16 is connected with upper box, lower box by screw 15, in the groove distributing twist in rotating shaft 10, have metal derby 11, moving knife 12 is connected with metal derby 11 by bolt 13.The first stationary knife 3 and the second stationary knife 9 are arranged on the wall junction between upper box 2 and lower box 4.Whole device is fixed on base 7, and is placed with material storing box 6 above base 7, is used for holding broken particle.

In the columniform rotating shaft 10 of this device, have the groove distributing twist, and be welded with metal derby 11 in groove, moving knife 12 is linked together by bolt and metal derby, when work, can realize continuous cutting, fragmentation to waste plastic, efficiency is high, respond well.

When after this plastic crushing device work a period of time, if find that a certain (or multiple) cutter head has worn up to can not use time, only need suitable loose bolts, readjust cutter, proceed cutting with unworn cutter head (cutter head for subsequent use) still, until all cutter heads more renew cutter all can not use time again, to guarantee stock-removing efficiency and cutting quality, this cutter structure has improved the service life of cutter greatly, has reduced the use cost of cutter, and can save cutter.

Claims

1. a plastic crushing device, is characterized in that, this device comprises hopper, upper box, the first stationary knife, lower box, support, material storing box, base, screen cloth, the second stationary knife, rotating shaft, metal derby, moving knife, bolt, bearing, screw, bearing (ball) cover; The top of upper box is connected with hopper, the bottom of upper box is connected with lower box, screen cloth is installed in lower box bottom, and pass through stent support, between upper box and lower box, rotating shaft is installed, rotating shaft is by bearings, and bearing (ball) cover is connected with upper box, lower box by screw, in the groove distributing twist in rotating shaft, have metal derby, moving knife is connected with metal derby by bolt; The first stationary knife and the second stationary knife are arranged on the wall junction between upper box and lower box; Whole device is fixed on base, and is placed with material storing box above base, is used for holding broken particle.

2. a kind of plastic crushing device according to claim 1, is characterized in that, described moving knife has four cutter heads.