CN2897611Y

CN2897611Y - Wind-cooling mould-sided granulating conveyor for plastic extruding comminutor

Info

Publication number: CN2897611Y
Application number: CN 200620057707
Authority: CN
Inventors: 林泽平
Original assignee: JINDA PLASTICS CO Ltd SHANTOU ECONOMIC ZONE
Current assignee: JINDA PLASTICS CO Ltd SHANTOU ECONOMIC ZONE
Priority date: 2006-04-14
Filing date: 2006-04-14
Publication date: 2007-05-09
Anticipated expiration: 2016-04-14

Abstract

The utility model relates to a mould face granulating air cooling delivery device of a rubber extrusion granulator, which comprises a mould head, a granulating device, a blower, a delivery pipe and a separator. The granulating device is arranged on a rotary shaft of the mould head in the middle of the delivery pipe and is equipped with a plurality of extrusion holes, the blower is positioned at the entrance of the delivery pipe and the separator is positioned at the exit of the delivery pipe. The utility model is characterized in that only an extrusion hole is arranged on each radial line passing the rotary shaft of the mould head of which the diameter is at least 200 mm. A heat insulation device, which is positioned on the joint of the mould head and the delivery pipe, is arranged on the mould head of the granulator. Compared with the prior art, the utility model has the advantages of effective avoidance of pipe plug and bonding of plastic particles, simple structure and easy achievement.

Description

The air-cooled pelletizing conveying device of rubber and plastic extruding granulator die face

Technical field

The utility model relates to a kind of rubber and plastic extruding granulator, more specifically to the air-cooled pelletizing conveying device of a kind of rubber and plastic extruding granulator die face.

Background technology

Fields such as the rubber and plastic extruding granulator is widely used in that rubber and plastic is mixing, modifying plastics and waste plastics recovery, especially along with the reinforcement day by day of people's environmental consciousness, the rubber and plastic extruding granulator is also increasing in the effect in fields such as waste plastics recovery.

According to statistics, 98 years global house refuses are above 65,000,000,000 tons.The house refuse of China also surpasses 100,000,000 tons, and these rubbish surpass 800,000 mu annual the occupation of land, and the economic loss that causes surpasses 10,000,000,000 yuan, and annual house refuse is also in quick growth.The ratio of waste plastics is about 10% in these rubbish, and in continuous increase, the ecological balance in heavy damage.

The method that adopts mainly is landfill method and burning method at present.But the shortcoming of landfill method is: waste plastics is long in the degradation in soil cycle, generally needs more than 100 years, and therefore occupation of land is many, and the time is long, and the harmful substance that decomposites can polluted source and atmosphere.Burning method heat energy utilization rate is low, and the pernicious gas that produces causes atmosphere pollution.In order to address these problems, occurred the blast furnace blowing method abroad, but this method is unsuitable for the processing of chloride waste plastics, because the HCL gas that produces in the burning can corrode body of heater and contaminated environment.

And at present generally adopt hot melt granulation method or cold conditions comminution granulation for the processing method of the less waste plastics of bulk density.Because cold conditions comminution granulation consumption of power is big, the cost height, so the utilization of hot melt granulation method is more.

Existing rubber and plastic extruding granulator, its granulation cooling carrying method has three kinds.First kind is the forced draft method, but because the die head that adopts is less, general diameter is below 150, and the discharge opening on the die head is few, therefore takes place easily to stop up and the bonding phenomenon." a kind of technological improvement of plastic granulating device " discloses a kind of plastic granulating device as Chinese patent literature CN2474297, formed by extruder, die head, cutting box, cutter, blower fan, sprayer and loading head, cutter are provided with the knives sheet, closely contact with die head, cutter are connected with the main shaft of motor by spring and are rotated at a high speed by driven by motor, are in tight contact condition all the time with die head in the workbench process; The die head side is provided with a sprayer, during work White Mineral Oil is sprayed to cutter, improves cutting effect and product gloss; Fan pipeline adopts the closed circulation formula to connect, and a pipeline promptly is set above loading head in addition is connected with the air intake vent of blower fan.But this scenario-frame complexity, stop up easily.

Second kind is the negative pressure suction method, but this method can only produce an atmospheric pressure at most, and therefore line clogging also takes place easily, seldom adopts now.

The third is that positive and negative pressure is in conjunction with suction method.Disclose a kind of rubber and plastic extruding pelletization as Chinese patent literature CN87206470U " the rubber and plastic extruding pelletization cools off pumping device with air " and cooled off pumping device with air; this device is special threeway pumping device; its vertical pipeline is connected on the pellet head below; one side and the air blast of horizontal direction pipeline join; an opposite side and a separator join; in threeway vertically and the interface of horizontal pipe; open an angled slots; put the portable plate that to twitch in the slit; portable plate is supported by the supporting plate that is welded on the three port obliquities; regulate portable plate, then form a gap nozzle in the threeway horizontal direction.But this method in use finds to have the shortcoming of negative pressure suction method equally, is exactly that line clogging takes place easily, needs often cleaning, and its structure more complicated, the manufacturing cost height.

Summary of the invention

The purpose of this utility model provides the air-cooled pelletizing conveying device of a kind of rubber and plastic extruding granulator die face, can avoid conveyance conduit to stop up, and prevents that plastic grain from bonding together, and the technical scheme of employing is as follows:

The air-cooled pelletizing conveying device of rubber and plastic extruding granulator die face of the present utility model; comprise die head, pellet device, air blast, conveyance conduit and separator; pellet device is located in the rotating shaft of die head; die head is located at the conveyance conduit middle part; air blast is located at the conveyance conduit inlet; separator is located at the conveyance conduit outlet, and die head is provided with a plurality of extrusion cavities, it is characterized in that: all have only an extrusion cavities on any process radius of rotating shaft on the described die head.That is to say that all on different radius, there is not the situation that 2 extrusion cavities are arranged on the radius in each extrusion cavities.Like this, the pellet device synchronization is cut next plastic grain only through an extrusion cavities.Cool time after each plastic grain that is downcut downcuts is all inequality, and the temperature of each plastic grain is all inequality, therefore is not easy the phenomenon that occurs boning.And the die head of existing comminutor often has 2 above extrusion cavities on the process radius of rotating shaft, so the cool time after a lot of plastic grains that downcut downcut is identical, temperature is also basic identical, just occurs the phenomenon that bonds easily.

The diameter of described die head is at least 200 millimeters.The diameter of the die head of existing comminutor is all at the 120-150 millimeter, and is smaller, so the speed that plastics are extruded is very fast, and the plastics of extruding are less the cool time before being cut off, and occurs the phenomenon of stopping up and boning easily.This programme can reduce the speed that plastics are extruded by increasing the diameter of die head, thereby increases the cool time of plastics before being cut off of extruding, and reduces the phenomenon of obstruction and bonding.

Also be provided with heat-proof device on the die head of described comminutor, described heat-proof device is located at the junction of die head and conveyance conduit.The effect of heat-proof device is the temperature that effectively keeps die head, avoids the extrusion temperature of die head low excessively, clogging occurs.

The utility model beneficial effect against existing technologies is, effectively avoided the conveyance conduit obstruction, prevents that plastic grain from bonding together, and is simple in structure, be easy to realize.

Description of drawings

Fig. 1 is the structural representation of the utility model preferred embodiment;

Fig. 2 is the front view of preferred embodiment die head shown in Figure 1.

The specific embodiment

As shown in Figure 1, 2, the air-cooled pelletizing conveying device of rubber and plastic extruding granulator die face in this preferred embodiment comprises die head 3, pellet device 6, air blast 1, conveyance conduit 2, heat-proof device 5 and separator 4.

Pellet device 6 is located in the rotating shaft 8 of die head 3, die head 3 is located at conveyance conduit 2 middle parts, air blast 1 is located at conveyance conduit 2 inlets, separator 4 is located at conveyance conduit 2 outlets, die head 3 is provided with a plurality of extrusion cavities 7, all has only an extrusion cavities 7 on any process radius of rotating shaft 8 on the described die head 3.That is to say that all on different radius, there is not the situation that 2 extrusion cavities 7 are arranged on the radius in each extrusion cavities 7.Like this, pellet device 6 synchronizations are cut next plastic grain only through an extrusion cavities 7.Cool time after each plastic grain that is downcut downcuts is all inequality, and the temperature of each plastic grain is all inequality, therefore is not easy the phenomenon that occurs boning.

The diameter of described die head 3 is at least 200 millimeters.This programme can reduce the speed that plastics are extruded by increasing the diameter of die head 3, thereby increases the cool time of plastics before being cut off of extruding, and reduces the phenomenon of obstruction and bonding.

Described heat-proof device 5 is located at the junction of die head 3 and conveyance conduit 2.The effect of heat-proof device 5 is the temperature that effectively keep die head 3, avoids the extrusion temperature of die head 3 low excessively, clogging occurs.

The above is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be all equivalents of being done according to claim scope of the present utility model, be the utility model claim scope and cover.

Claims

1, the air-cooled pelletizing conveying device of a kind of rubber and plastic extruding granulator die face; comprise die head, pellet device, air blast, conveyance conduit and separator; pellet device is located in the rotating shaft of die head; die head is located at the conveyance conduit middle part; air blast is located at the conveyance conduit inlet; separator is located at the conveyance conduit outlet, and die head is provided with a plurality of extrusion cavities, it is characterized in that: all have only an extrusion cavities on any process radius of rotating shaft on the described die head.

2, the air-cooled pelletizing conveying device of rubber and plastic extruding granulator die face as claimed in claim 1, it is characterized in that: the diameter of described die head is at least 200 millimeters.

3, the air-cooled pelletizing conveying device of rubber and plastic extruding granulator die face as claimed in claim 1 or 2, it is characterized in that: also be provided with heat-proof device on the die head of described comminutor, described heat-proof device is located at the junction of die head and conveyance conduit.