WO2012100465A1

WO2012100465A1 - Waste plastics film extruder

Info

Publication number: WO2012100465A1
Application number: PCT/CN2011/073190
Authority: WO
Inventors: 郑勇
Original assignee: 张家港市联达机械有限公司
Priority date: 2011-01-30
Filing date: 2011-04-22
Publication date: 2012-08-02
Also published as: CN102145536A

Abstract

A waste plastics film extruder includes a machine barrel (2), a helical delivery rod (3) mounted in the machine barrel (2), and a feed hopper (12) mounted on the machine barrel (2). The helical delivery rod (3) includes a rod body which is installed coaxially with the machine barrel (2) and helical blades on the rod body. The power input end of the helical delivery rod (3) extends out of the machine barrel (2) and connects with a drive device. The machine barrel (2) includes a drying sectional barrel (11), a compression sectional barrel (10) and an extruding sectional barrel (9) which are sequentially connected along the direction of the material delivery. The compression sectional barrel (10) presents a round stage shape whose inner diameter gradually reduces from the drying sectional barrel (11) to the extruding sectional barrel (9). Some discharge holes (15) are set on the barrel wall of said drying sectional barrel (11), and several heaters (16) wrap around the outer wall of the extruding sectional barrel (9). After drying in the waste plastics film extruder, the waste plastics film is extruded out directly to form products.

Description

Waste plastic film extruder

Technical field

The invention relates to the field of plastic recycling and recycling technology, in particular to a waste plastic film extruder for recycling plastics.

Background technique

In recent years, the application range of plastic products at home and abroad has become more and more extensive. However, discarded plastics are not easily rotted, which will seriously affect the human ecological environment. Therefore, people began to recycle the discarded plastics and reuse them. However, the waste plastic must be pulverized into plastic film fragments before being reused, and then washed and dried. The dried material is made into various products through a waste plastic film extruder, and the quality of the product is guaranteed. Among them, the common extruder includes a frame, a barrel disposed on the frame, a screw conveying rod disposed in the barrel, a reduction box disposed on the frame, and a feeding hopper disposed on the barrel, the barrel One end of the screw is connected to the bearing seat, and the power input end of the screw conveying rod is movably disposed inside the bearing housing, and is connected with a driving device outside the bearing housing, and the outer wall of the barrel is wrapped with a plurality of heaters. The extruder can only make pre-dried raw materials into products, and has a single function. Nowadays, from the drying of waste plastic film to extrusion molding, two sets of dryers and waste plastic film extruders are required, which increases production costs and reduces production efficiency.

Summary of the invention

The technical problem to be solved by the present invention is to provide a waste plastic film extruder which dries and extrudes a waste plastic film together.

In order to solve the above problems, the technical solution adopted by the present invention is: a waste plastic film extruder comprising a barrel, a screw conveying rod disposed in the barrel, a feeding hopper disposed on the barrel, and the screw conveying rod includes The rod body disposed coaxially with the barrel and the spiral blade on the rod body, the power input end of the screw conveying rod extends out of the barrel and is connected to a driving device. The barrel includes a drying section barrel, a compression section barrel and an extrusion section barrel which are sequentially connected according to the material conveying direction, and the compression section barrel is in the form of a truncated cone whose inner diameter gradually decreases from the drying section barrel to the extrusion section barrel. A plurality of water outlet holes are arranged on the wall of the barrel of the drying section, and a plurality of heaters are wrapped on the outer wall of the barrel of the extrusion section. The material feeding hopper on the barrel enters the barrel and is pushed forward by the rotating screw conveying rod, which passes through the drying section barrel, the compression section barrel and the extrusion section barrel, and is dehydrated, dried and heated in the barrel. Finally it is extruded to form a product.

The driving device comprises a motor and a reduction gear box connected with the output shaft of the motor, and the output shaft of the reduction gear box and the screw conveying rod are connected by a coupling.

A driving pulley is arranged on the output shaft of the motor, and a driven pulley is arranged on the input shaft of the reduction gearbox, and the driving pulley and the driven pulley are connected by a belt.

Preferably, the barrel can be fixedly connected to a bearing seat, and the power input end of the screw conveying rod is rotatably supported by the bearing seat.

Preferably, the barrel is preferably disposed on a frame, and the driving device is also disposed on the frame. The work components are integrated into the rack for easy placement and use, and the structure is more compact.

The invention has the beneficial effects that the waste plastic film is dried in an extruder and then extruded to form a product, which is dried without using an independent dryer, and then extruded by an extruder, thereby reducing the number of steps and reducing the number of steps. The production cost increases the production efficiency, and the overall footprint of the machine is small.

DRAWINGS

Figure 1 is a schematic view showing the structure of a waste plastic film extruder of the present invention;

Figure 2 is a partial enlarged view of Figure 1;

In the figure: 1, rack, 2, barrel, 3, screw conveyor, 4, motor, 5, reducer, 6, drive pulley, 7, driven pulley, 8, belt, 9, extrusion section , 10, compression section barrel, 11, drying section barrel, 12, feed hopper, 13, bearing seat, 14, coupling, 15, water outlet, 16, heater, 17, extruded thread, 18 , conveying screw teeth.

detailed description

The waste plastic film extruder of the present invention will be further described in detail below by way of specific examples.

In the embodiment shown in FIG. 1, the waste plastic film extruder comprises a frame 1, a barrel 2 disposed on the frame 1, a screw conveyor rod 3 movably disposed in the barrel 2, and a rack disposed in the rack. 1 on the drive. The driving device comprises a motor 4 fixed on the frame 1 and a reduction gear box 5 fixed on the frame 1. The output shaft of the motor 4 is provided with a driving pulley 6, and the input shaft of the reduction box 5 is provided with a driven The pulley 7, the drive pulley 6 and the driven pulley 7 are connected by a belt 8. Of course, in the actual production process, other driving devices such as motors can be directly used according to requirements. The barrel 2 is composed of an extrusion section barrel 9, a compression section barrel 10 and a drying section barrel 11, wherein the compression section barrel 10 has a truncated cone shape, and the extrusion section barrel 9 and the compression section barrel 10 have a smaller diameter end. Connected, the drying section barrel 11 is connected to the larger diameter end of the compression section barrel 10. The drying section barrel 11 is provided with a feeding hopper 12, and the other end of the drying section barrel 11 is connected with the bearing seat 13, and the end of the screw conveying rod 3 is movably disposed inside the bearing housing 13, and is decelerated by the coupling 14 The output shafts of the tank 5 are connected. As shown in FIG. 2, the cylinder wall of the drying section barrel 11 is provided with a plurality of water outlet holes 15, and the outer wall of the extrusion section barrel 9 is wrapped with a plurality of heaters 16. An extrusion screw 17 is disposed on the screw conveying rod 3 located in the barrel 9 of the extrusion section, and a conveying screw 18 is disposed on the screw conveying rod 3 located in the barrel 11 of the drying section.

The working principle of the invention is: putting the cleaned waste plastic film into the feeding hopper 12, and then the waste plastic film enters the drying section barrel 11, and the motor 4 is driven to slow down by the driving pulley 6, the belt 8 and the driven pulley 7. The input shaft of the box 5 rotates, and the output shaft of the reduction box 5 drives the screw conveying rod 3 to rotate through the coupling 14. The screw conveying rod 3 pushes the waste plastic film in the drying section barrel 11 forward by the conveying screw 18, when After the waste plastic film enters the compression section barrel 10, since the compression section barrel 10 is formed into a truncated cone shape, the waste plastic film is severely squeezed in the compression section barrel 10 and begins to accumulate. After a period of time, the drying section barrel 11 is dried. The waste plastic film inside is also accumulated more, so that the waste plastic film in the compression section barrel 10 and the drying section barrel 11 forms a certain pressure, which squeezes the moisture in the waste plastic film and passes through the drying section machine. The water outlet hole 15 in the wall of the cylinder 11 is discharged, and the barrel 9 is heated by the heater 16 to generate water vapor, so that the water vapor formed after heating forms air pressure, so that the waste plastic film in the barrel 10 is compressed. Extrused The drying section enters the barrel under the action of air pressure 11, and is discharged from the nozzle holes 15, the waste plastic film in order to achieve adequate drying purposes. The dried waste plastic film is continuously pushed forward in the extrusion section barrel 9 by the screw conveying rod 3, and at the same time, the heater 16 on the outer wall of the extrusion section barrel 9 is in the extrusion section barrel 9. The waste plastic film is further heated, the waste plastic film is plasticized, and extruded by the extrusion screw 17 on the screw conveyor rod 3, and finally the product is formed by a mold set at the head of the waste plastic film extruder.

The invention has the beneficial effects that the waste plastic film extruder can simultaneously realize the functions of drying and extruding, reduce the use of the dryer, reduce the production cost, reduce the work link and energy waste, reduce the manpower, and improve the work. Efficiency and easy maintenance.

While the invention has been described with respect to the specific embodiments of the present invention, it is apparent that many modifications may be made to the prior art and process without departing from the scope and spirit of the invention. In the technical field of the present invention, various changes can be made within the technical scope of the present invention as long as the general knowledge is grasped.

Claims

1. A waste plastic film extruder includes a barrel, a screw conveying rod disposed in the barrel, and a feeding hopper disposed on the barrel, the screw conveying rod includes a rod body coaxially disposed with the barrel and located on the rod body The spiral blade, the power input end of the screw conveying rod extends out of the barrel and is connected with a driving device, wherein the barrel comprises a drying section barrel, a compression section barrel and an extrusion which are sequentially connected according to the material conveying direction. a barrel of the section, the barrel of the compression section is in the shape of a truncated cone whose inner diameter gradually decreases from the barrel of the drying section to the barrel of the extrusion section, and a plurality of outlet holes are arranged in the barrel wall of the drying section barrel, in the extrusion section A plurality of heaters are wrapped around the outer wall of the barrel.

2. The waste plastic film extruder according to claim 1, wherein said driving means comprises a motor and a reduction gear box associated with an output shaft of said motor, said output shaft of said reduction gear box and said screw conveying rod Connected by a coupling between them.

3. The waste plastic film extruder according to claim 2, wherein the output shaft of the motor is provided with a driving pulley, and the input shaft of the reduction gear box is provided with a driven pulley, between the driving pulley and the driven pulley. Connected by a belt.

4. The waste plastic film extruder according to any one of claims 1 to 3, wherein the barrel is fixedly coupled to a bearing housing, and the power input end of the screw conveying rod is rotatably supported by the bearing housing.

The waste plastic film extruder according to any one of claims 1 to 3, wherein the barrel is disposed on a frame, and the driving device is also disposed on the frame.