CN104859067A - Horizontal plastic waste recovering granulator - Google Patents

Abstract

A horizontal plastic waste recovering granulator is composed of a hopper, a box cover, a melting chamber, a fan, an arc-shaped screen, a heating tube, a mouth mold, a pelletizing mechanism, an extrusion screw, a machine cylinder, a frame, a driving mechanism, a transmission mechanism, a V-shaped receiving hopper, a hot air circulating box body, a separator plate and a stirring mechanism. The granulator adopts hot air to directly melt plastic wastes, so the crushing and cleaning processes of traditional technologies are omitted, the working environment is improved, and secondary pollution is avoided; and the temperature of the hot air is controllable, so the overheating decomposition of plastics is avoided, cycle use of the hot air is realized, and the heat efficiency is high.

Description

A horizontal waste plastic recycling granulator

technical field

The present invention relates to the technical field of granulators, in particular to a waste plastic granulator.

Background technique

The scope of application of plastics is becoming wider and wider, replacing metal, wood, paper, etc. in large quantities. With the widespread use of plastics, a large amount of waste plastics appear. Because they are difficult to degrade, their disposal has become a difficult problem. waste. Recycling and resource development of waste plastics is a deep understanding of the environment and resources, and a way of survival to reduce environmental pollution and waste of resources caused by waste plastics.

The most common way to recycle waste plastics in our country is recycling and granulation. The traditional granulation process is to crush and clean the recycled waste plastics, and then extrude them through screw extruders for granulation. The crushing noise is loud, dusty, and produces waste. Sewage causes secondary pollution.

Contents of the invention

The object of the present invention is to aim at the defects of the prior art, to provide a horizontal waste plastic granulator, the granulator uses hot air to directly melt the waste plastic in the process, saves the crushing and cleaning process in the traditional process, and improves the working efficiency. Environment, to avoid secondary pollution, while hot air circulation, high thermal efficiency, through precise control of hot air temperature, to prevent plastic degradation, reliable quality.

In order to achieve the above object, the present invention adopts the following technical solutions:

The structure of the horizontal waste plastic granulator includes a hopper, a box cover, a hot air circulation box, a melting chamber, a V-shaped hopper, a barrel, an extrusion screw, a pelletizing mechanism and a frame;

A box cover is installed above the melting chamber, and there is a hopper on the box cover. The outside is a hot air circulation box, and the inside has a stirring mechanism. The bottom is connected with a curved screen, and a V-shaped hopper is connected under the screen. The middle part of the V-shaped hopper is Connect the barrel, there is an extrusion screw inside the barrel, the barrel is fixed on the frame, the barrel is connected to the die, and the die is connected to the pelletizing mechanism.

The waste plastic enters the melting chamber from the hopper, and is heated and melted by contact with the hot air entering from the hot air circulation box through the V-shaped hopper. The stirring mechanism stirs the material to make it evenly heated, and the molten waste plastic falls from the curved screen into the V-shaped hopper. The receiving bucket is extruded into the barrel by the conveying screw belt, and finally extruded by the die through the screw extrusion and conveying, and the extruded plastic is pelletized by the pelletizing mechanism.

The melting chamber includes a square box, an arc-shaped screen, a stirring mechanism, and an exhaust gas circulation outlet. There is an exhaust gas circulation outlet on the top of the square box, and an arc-shaped screen is connected to the bottom. The edge of the arc-shaped screen has an acute angle , the stirring mechanism is supported by a stirring shaft, and there are stirring blades on the stirring shaft, and a wedge-shaped gap is formed between the stirring blades and the curved screen.

The hot air passes through the V-shaped hopper from the hot air circulation inlet, and enters the melting chamber through the curved screen to heat the plastic. The wedge-shaped gap formed between the stirring blade and the curved screen squeezes the waste plastic in the melting chamber. The sharp edges of the mesh edges scrape off the extruded waste plastic, so that the molten part of the blocky waste plastic surface in the melting chamber is scraped off and falls under the screen, while the unmelted part of the core continues to be heated and melted in the melting chamber.

The bottom of the V-shaped receiving bucket is arc-shaped, and there are conveying spiral belts at both ends. The spiral belts at both ends are driven by a geared motor, and the direction of rotation makes the material convey to the middle. The incoming molten plastic is pushed to the middle by the conveying screw belt at the bottom of the V-shaped hopper and falls into the barrel at the middle opening of the bottom.

The hot air circulation box includes a hot air circulation box shell, a fan, a fan partition, and a heating pipe. There is a fan on the left and right between the hot air circulation box and the melting chamber. The outlet of the fan is connected to the fan partition. Equipped with heating pipes; two fans suck the tail gas of the melting chamber out from the tail gas circulation outlet and blow it to the heating pipe under the fan partition to heat it up. The melting chamber can be recycled, and the temperature of the hot air can be controlled to prevent the plastic from overheating and degrading.

The beneficial effects of the present invention are: the present invention directly melts waste plastics through hot air, without crushing waste plastics, large pieces of waste plastics can extrude the melted plastic melt of the surface layer through the screw to granulate, and the unmelted part of the core Continue to heat and melt in the melting chamber, so noise and dust are avoided during the production process, and the working environment is improved; hot air is recycled, no waste water and waste gas are discharged, low energy consumption, and environmentally friendly.

Description of drawings

Fig. 1 is the general structure schematic diagram of described horizontal waste plastic granulator;

In the figure 1-hopper, 2-box cover, 3-melting chamber, 4-fan, 5-square box, 6-curved screen, 7-heating pipe, 8-hot air circulation box, 9-granulation mechanism , 10-die, 11-extrusion screw, 12-barrel, 13-hot air circulation inlet, 14-frame, 15-drive mechanism, 16-transmission mechanism, 17-V-shaped bucket, 18-hot air circulation box Body, 19-partition, 20-stirring mechanism;

Fig. 2 is a structural schematic diagram of the melting chamber of the horizontal waste plastic granulator;

In the figure, 21-tail gas circulation outlet, 22-conveying screw belt, 23-reduction motor, 24-stirring shaft, 25-stirring blade.

Detailed ways

The overall structural schematic diagram of the horizontal waste plastic granulator of the present invention is shown in Figure 1 and Figure 2, and its structure includes a hopper (1), a box cover (2), a melting chamber (3), a fan (4), and a square box (5), curved screen (6), heating pipe (7), hot air circulation box (8), pelletizing mechanism (9), die (10), extrusion screw (11), barrel (12 ), circulating hot air inlet (13), frame (14), drive mechanism (15), transmission mechanism (16), V-shaped adapter (17), hot air circulation box shell (18), partition (19), Stirring mechanism (20), tail gas circulation outlet (21), conveying screw belt (22), reducer (23), stirring shaft (24), stirring blade (25), and a box cover is installed above the melting chamber (3) (2), there is a hopper (1) on the box cover (2), the melting chamber (3) is externally connected to the hot air circulation box (8), the inside is equipped with a stirring mechanism (20), and the bottom is a curved screen (6), The bottom of the curved screen (6) is connected with a V-shaped bucket (17). There are two conveyor belts (22) at the bottom of the V-shaped bucket (17). The conveyor belt (22) is driven by a geared motor (23). The middle outlet at the bottom of the hopper (17) is connected to the barrel (12), and the barrel (12) is equipped with an extrusion screw (11), and the barrel (12) is fixed on the frame (14), and the barrel (12) The die (10) is connected, the die (10) is connected to the granulation mechanism (9), the stirring mechanism (20) is supported by the stirring shaft (24), and the stirring blade (25) is arranged on the stirring shaft (24). Through the above settings, waste plastics can be put into the hopper (1), and the material enters the melting chamber (3), and the hot air in the hot air circulation box (8) passes through the heating pipe (7) under the action of the fan (4). After heating, the hot air is sent to the melting chamber (3) through the hot air circulation inlet (13) at the bottom of the V-shaped adapter (17), and the waste plastic is heated and melted, and then the waste plastic is stirred by the stirring mechanism (20) to make it evenly heated. At the same time, a wedge-shaped gap is formed between the stirring blade (25) and the curved screen (6) to extrude the molten material, and the sharp-angled edges of the curved screen (6) scrape off the molten plastic on the surface of the extruded plastic to melt The plastic passes through the curved screen (6) and enters the V-shaped hopper (17), and the unmelted waste plastic continues to be heated and melted in the melting chamber (3), and the molten plastic melt passes through the V-shaped hopper (17) The conveying screw belt (22) at the bottom is conveyed into the barrel (12), extruded by the extruding screw (11) to make it pass through the die (10) and extruded in strips, and then the pelletizing mechanism (9) completes the production. grain.

In this embodiment, the hot air circulation box (8) includes a fan (4), a fan partition (19), and a heating pipe (7), and the space between the hot air circulation box (8) and the melting chamber (3) is about A fan (4) is symmetrically arranged, the outlet of the fan (4) is connected to the fan partition (19), the heating pipe (7) is installed under the fan partition (19), and there is an exhaust gas circulation outlet (21) on the upper part of the melting chamber (3) , there is a hot air circulation inlet (13) at the bottom of the V-shaped bucket (17). Through the above settings, the fan (4) can suck the tail gas in the melting chamber (3) from the tail gas circulation outlet (21) and blow it to the heating pipe (7) under the fan partition (19) for heating, and then the hot air circulation inlet (13 ) into the melting chamber (3) through a V-shaped hopper (17) and a curved screen (6) to realize hot air recycling.

Claims (4)

1. A horizontal waste plastic recycling granulator, characterized in that: the horizontal waste plastic granulator includes a hopper, a box cover, a hot air circulation box, a melting chamber, a V-shaped hopper, a barrel, Extrusion screw, pelletizing mechanism and frame; A box cover is installed above the melting chamber, and there is a hopper on the box cover. The outside is a hot air circulation box, and the inside has a stirring mechanism. The bottom is connected with a curved screen, and a V-shaped hopper is connected under the screen. The middle part of the V-shaped hopper is Connect the barrel, there is an extrusion screw in the barrel, the barrel is fixed on the frame, the barrel is connected to the die, and the die is connected to the pelletizing mechanism; The waste plastic enters the melting chamber from the hopper, and is heated and melted by contact with the hot air entering from the hot air circulation box through the V-shaped hopper. The stirring mechanism stirs the material to make it evenly heated, and the molten waste plastic falls from the curved screen into the V-shaped hopper. The receiving bucket is extruded into the barrel by the conveying screw belt, and finally extruded by the die through the screw extrusion and conveying, and the extruded plastic is pelletized by the pelletizing mechanism. 2. A horizontal waste plastic recycling granulator according to claim 1, characterized in that: the melting chamber includes a square box, a curved screen, a stirring mechanism, and an exhaust gas circulation outlet, and the square box There is an exhaust gas circulation outlet on the top, and an arc-shaped screen is connected to the bottom. One side of the edge of the arc-shaped screen is an acute angle. The stirring mechanism is supported by the stirring shaft. There are stirring blades on the stirring shaft. A wedge-shaped gap is formed between; The hot air passes through the V-shaped hopper from the hot air circulation inlet, and enters the melting chamber through the curved screen to heat the plastic. The wedge-shaped gap formed between the stirring blade and the curved screen squeezes the waste plastic in the melting chamber. The sharp edges of the mesh edges scrape off the extruded waste plastic, so that the molten part of the blocky waste plastic surface in the melting chamber is scraped off and falls under the screen, while the unmelted part of the core continues to be heated and melted in the melting chamber. 3. A horizontal waste plastic recycling granulator according to claim 1, characterized in that: the bottom of the V-shaped receiving bucket is arc-shaped, and there are conveying spiral belts at both ends, and the spiral belts at both ends are decelerated Driven by the motor, the direction of rotation makes the material convey to the middle, and there is an opening in the middle of the bottom to connect with the barrel; the molten plastic falling from the screen is pushed to the middle by the conveying screw belt at the bottom of the V-shaped hopper and falls into the middle opening at the bottom inside the barrel. 4. A horizontal waste plastic recycling granulator according to claim 1, characterized in that: the hot air circulation box includes a hot air circulation box shell, a fan, a fan partition, and a heating pipe. There is a fan on the left and right between the body and the melting chamber. The outlet of the fan is connected to the fan partition, and a heating pipe is installed under the fan partition; the two fans suck the tail gas of the melting chamber from the tail gas circulation outlet and blow it to the heating unit under the fan partition. The tube makes it heated, and the heated hot air enters the V-shaped hopper from the hot air circulation inlet and enters the melting chamber through the curved screen to realize recycling. The temperature of the hot air can be controlled to avoid overheating and degradation of the plastic.