CN201198174Y

CN201198174Y - Perpendicular dry cutting water-cooling plastic granulator

Info

Publication number: CN201198174Y
Application number: CNU2008200216059U
Authority: CN
Inventors: 曹永良
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-24
Filing date: 2008-04-24
Publication date: 2009-02-25
Anticipated expiration: 2018-04-24

Abstract

The utility model discloses a vertical dry cutting water cooling plastic granulator. A granulating chamber (9) is arranged below a headpiece (1); the upper end surface of the granulating chamber (9) is closed, and the lower end of the granulating chamber (9) is provided with a granule outlet (8); the upper part of the granulating chamber (9) is of an interlayer cylinder shape; an annular cylinder wall interlayer (12) is provided with an upper closed end surface and a lower closed end surface as well as a water inlet pipe (11); a plurality of water spraying slits (14) are uniformly arranged on the inner layer cylinder wall (13) of the annular cylinder wall interlayer (12); the water spraying slits (14) are all arranged along the longitudinal direction of the inner layer cylinder wall (13), that is, the water spraying slits (14) have the trend to be parallel to a center shaft (7) of the headpiece, as well as the water spraying slits (14) and the center shaft (7) of the headpiece are arranged at the same height position. The movement track of granules which detach from a cutter is changed under the action of a water zone, thus the granules are avoided to contact with the inner layer cylinder wall too early to be adhered. Meanwhile, the granules which detach from the cutter have a long movement line and favorable cooling effect before being discharged from the granule outlet. The dry cutting operation of materials is realized, the shape of the granules is uniform, the stability is favorable, and the yield is enhanced.

Description

Vertical dry-cutting water-cooling plastic granulator

Technical field the utility model relates to a kind of granulation special equipment, particularly a kind of vertical dry-cutting plastic granulator that has water cooling system.Be applicable to the fervent water-cooled granulation of extruding pelletization production lines such as plastics, grafting PP glue, PE glue, EVA PUR.

In the existing fervent water-cooled comminutor production line of background technology, underwater cutpellet is arranged, water ring pelletizing, the hobboing cutter modes such as pelletizing, head band water cooling of wiping one's face.Because these ways all belong to wet butt formula, its major defect is a poor stability, the granular size inequality of cutting, and yield of unit time can not be satisfactory.

Number of patent application is that 200610098975.8 Chinese invention patent application discloses a kind of " vertical type circular water-cooling device for plastic hot-cutting ".Document number is that the United States Patent (USP) of US4663099A also discloses a kind of extruding and granulating equipment.Above-mentioned two kinds of Granulation Equipments all adopt driedly cuts the granulation mode, and all has the water ring cooling body, has overcome the major defect that aforementioned wet butt formula is brought.But in the cooling body of these two kinds of equipment, no matter whether have pressure, the direction of motion of the flow direction and the particle that breaks away from cutting knife that is used for the water of cooling particulate is mutually perpendicular substantially, the problem of being brought mainly shows following two aspects: the particle speed of service that the first, has just broken away from cutting knife is higher, is easy to pass cascade and is bonded on the pelletizing chamber interior walls and easy-clear not.The second, the particle temperature of disengaging cutting knife is higher, contacts the back with cooling water and promptly discharges from the pelletizing chamber in very short time, and cool time is shorter, and cold and effect can not be satisfactory, and equipment job stability and uniform particles degree are also good inadequately.

Utility model content technical problem to be solved in the utility model is; a kind of vertical dry-cutting water-cooling plastic granulator is provided; structure by changing water-cooled body and cooling water are in the indoor method of operation of pelletizing; change original running orbit of particle; prolong cool time and effectively prevent particle and the adhesion of pelletizing locular wall; and then improve equipment job stability and uniform particles degree, in order to overcome the deficiency of above-mentioned existing procucts.

The technical scheme that its technical problem that solves the utility model adopts is as follows:

A kind of vertical dry-cutting water-cooling plastic granulator comprises head, the cutting knife that is fixed on the material discharging mould on the head and is fixed in the head lower end, cutting knife is installed on the head central shaft, it is characterized in that: below head, be provided with the pelletizing chamber, this upper surface, pelletizing chamber sealing, the lower end has grain export; The top of pelletizing chamber, promptly a section around cutting knife is the sandwich cylinder shape, the barrel interlayer of annular has the end face of two sealings up and down and has water inlet pipe, offer several water spray slits therein on the internal layer barrel evenly distributedly, these water spray slits are along internal layer barrel circumferential arrangement, the trend of each water spray slit all is longitudinally, promptly has the trend with the head central axes, and they are in same height and position.

Side at each water spray slit is provided with a deflector, the inner of this deflector and internal layer barrel one or fix, and the mezzanine space between deflector and the internal layer barrel is an intake tunnel, the inwall of the center line of this intake tunnel and internal layer barrel is tangent; The center circle of the center line of water inlet pipe and barrel interlayer is tangent.

Good effect of the present utility model is, under cutting knife rotates at a high speed, institute's particle of cutting under centrifugal action to peripolesis.The water that enters from water inlet pipe has certain pressure, through the deflector water conservancy diversion, sprays into the pelletizing chamber at a high speed from the water spray slit, and forms the annular water band of rotation at a high speed between cutting knife and internal layer barrel.The particle that breaks away from cutting knife has changed movement locus under the effect of water band, particle rotates with water, has avoided contacting and adhesion too early with the internal layer barrel.Simultaneously, the particle that breaks away from cutting knife had longer moving line before discharging from grain export, and cooling effect is better.That has realized material driedly cuts operation, and grain shape is even, good stability, and output is improved.The utility model is more outstanding for the fervent water-cooled granulation advantage of high-viscosity material.

Description of drawings Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the cross sectional representation on top, pelletizing chamber.

The specific embodiment as shown in Figure 1, embodiment of the present utility model comprises the head 1 that has power set, the cutting knife 4 that is fixed on the material discharging mould 2 on the head 1 and is fixed in head 1 lower end.Have several discharge openings 3 on the material discharging mould 2.Cutting knife 4 is installed on the cutoff knife rack 5.5 of cutoff knife racks are installed on the head central shaft 7 by hold-down nut 6.

As shown in Figure 1, 2, below head 1, be provided with pelletizing chamber 9, this 9 upper surfaces, pelletizing chamber sealing, the lower end has grain export 8.The top of pelletizing chamber 9, promptly a section around cutting knife 4 is the sandwich cylinder shape.The barrel interlayer 12 of annular has the end face of two sealings up and down and has water inlet pipe 11, offer several water spray slits 14 therein on the internal layer barrel 13 evenly distributedly, these water spray slits 14 all vertically are provided with along internal layer barrel 13, promptly have the trend parallel with head central shaft 7, they are in same height and position.

Side at each water spray slit 14 is provided with a deflector 10, the inner of this deflector and internal layer barrel 13 one or fix, mezzanine space between deflector and the internal layer barrel 13 is an intake tunnel, the inwall of the center line of this intake tunnel and internal layer barrel 13 is tangent, and is tangent at the inwall of water spray 14 moments of slit and internal layer barrel 13 with the flow direction of current that guarantees to enter from these intake tunnels pelletizing chamber 9.On the other hand, the center circle of the center line of water inlet pipe 11 and barrel interlayer 12 is tangent, and is tangent with the center circle that guarantees to enter from water inlet pipe 11 flow direction of current of barrel interlayer 12 and barrel interlayer 12.The main purpose of these two kinds of tangent designs is that under the equal pressure flow, the water velocity that enters pelletizing chamber 9 reaches maximum.

Material is extruded from discharge opening 3, and the cutting knife 4 that is rotated at a high speed then is cut into particle.The particle that breaks away from cutting knife 4 has higher movement velocity in the horizontal direction, relies on inertia around head central shaft 7 rotation at a high speed, and has the tendency of the inwall of bump internal layer barrel 13.The high speed rotation water band that the High-Pressure Water that enters from water inlet pipe 11 forms fully cools off the back to these particles discharges from grain export 8, is transferred (can by blower fan power) by Material pipeline and in the particle drying device, is finished particle through super-dry.

Claims

1. vertical dry-cutting water-cooling plastic granulator, comprise head (1), the cutting knife (4) that is fixed on the material discharging mould (2) on the head (1) and is fixed in head (1) lower end, cutting knife (4) is installed on the head central shaft (7), it is characterized in that: be provided with pelletizing chamber (9) in head (1) below, this upper surface, pelletizing chamber (9) sealing, the lower end has grain export (8); The top of pelletizing chamber (9), promptly a section around cutting knife (4) is the sandwich cylinder shape, the barrel interlayer (12) of annular has the end face of two sealings up and down and has water inlet pipe (11), offer several water spray slits (14) therein on the internal layer barrel (13) evenly distributedly, these water spray slits (14) are along internal layer barrel (13) circumferential arrangement, the trend of each water spray slit (14) all is longitudinally, promptly has and the parallel trend of head central shaft (7), and they are in same height and position.

2. vertical dry-cutting water-cooling plastic granulator according to claim 1, it is characterized in that: the side at each water spray slit (14) is provided with a deflector (10), the inner of this deflector and internal layer barrel (13) one or fix, mezzanine space between deflector and the internal layer barrel (13) is an intake tunnel, and the inwall of the center line of this intake tunnel and internal layer barrel (13) is tangent; The center circle of the center line of water inlet pipe (11) and barrel interlayer (12) is tangent.