CN216153010U - Double-screw extruder suitable for double-wall corrugated pipe - Google Patents
Double-screw extruder suitable for double-wall corrugated pipe Download PDFInfo
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- CN216153010U CN216153010U CN202023246410.4U CN202023246410U CN216153010U CN 216153010 U CN216153010 U CN 216153010U CN 202023246410 U CN202023246410 U CN 202023246410U CN 216153010 U CN216153010 U CN 216153010U
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Abstract
The utility model discloses a double-screw extruder suitable for a double-wall corrugated pipe, wherein double screws are positioned in a machine barrel, one end of each screw is connected with a machine head connector, the other end of each screw is connected with a feeding hole, the double screws are conical, the screws are sequentially divided into a feeding section, a plasticizing section, an exhausting section and an extruding section from the feeding holes to the machine head connectors, and the threads of the double screws are mutually meshed. The utility model has the advantages that: this extruder adopts the twin-screw, and the twin-screw is the cone shape, and material plastify effect is better, just exhausts to the material for fashioned bellows surface does not have the bubble, and the segmentation design carries out different processings to the material in different stages, makes the material can carry, compaction, mixing and plastify with changing, and realizes the purpose of drainage, dehydration.
Description
Technical Field
The utility model relates to a cutting device, in particular to a double-screw extruder suitable for double-wall corrugated pipes.
Background
The double-wall corrugated pipe is a novel pipe with corrugated outer wall and smooth inner wall. It has been widely used as a buried drain pipe, an underground cable pipe, etc. in a considerable range to replace conventional cast iron pipes, cement pipes, general plastic pipes, and wound corrugated pipes.
The double screws adopted by the existing double-wall corrugated pipe extruder are not subjected to sectional treatment according to the characteristics of materials in different sections, the plasticizing effect of the materials is not ideal, and bubbles are easily formed on the surface of the formed corrugated pipe. And the existing extruder screw heating mode adopts external heating, and the heating efficiency is not high.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the double-screw extruder suitable for the double-wall corrugated pipe, which can better plasticize and compress.
The double-screw extruder is suitable for the double-wall corrugated pipe, the double screws are positioned in a machine barrel, one end of each screw is connected with a machine head connector, the other end of each screw is connected with a feeding hole, the double screws are conical, the screws are sequentially divided into a feeding section, a plasticizing section, an exhausting section and an extruding section from the feeding holes to the machine head connectors, and the threads of the double screws are mutually meshed.
Further optimized, the rotation direction of the double screws is in a different direction.
Further optimized, the tail end of the plasticizing section is provided with an axial groove.
Further optimized, the screw core is provided with an internal circulation temperature adjusting device.
Further optimizing, the plasticizing section is provided with 3-5 sections of threads with different lead lengths, and the lead lengths are sequentially decreased progressively according to the material conveying direction.
Further preferably, the extrusion section is provided with 3-5 sections of threads with different leads.
The utility model has the advantages that: this extruder adopts the twin-screw, and the twin-screw is the cone shape, and material plastify effect is better, just exhausts to the material for fashioned bellows surface does not have the bubble, and the segmentation design carries out different processings to the material in different stages, makes the material can carry, compaction, mixing and plastify with changing, and realizes the purpose of drainage, dehydration.
Drawings
FIG. 1 is a schematic diagram of a twin screw extruder suitable for use with double wall corrugated tubing.
Fig. 2 is a schematic view of a screw structure.
The labels in the figure are: 1-screw, 2-nose connector, 3-barrel, S1-feeding section, S2-plasticizing section, S3-exhausting section and S4-extruding section.
Detailed Description
A twin screw extruder suitable for use with double wall corrugated pipe is further described below with reference to the accompanying drawings.
The double-screw extruder is suitable for double-wall corrugated pipes, wherein double screws are positioned in a machine barrel 3, one end of a screw 1 is connected with a machine head connector 2, the other end of the screw is connected with a feeding hole, the double screws are conical, the screw 1 is sequentially divided into a feeding section S1, a plasticizing section S2, an exhaust section S3 and an extrusion section S4 from the feeding hole to the machine head connector, and the threads of the double screws are meshed with one another. The feeding section S1 has a larger diameter and a larger feeding space, can bear larger axial load, relatively increases the heat transfer area and the shearing speed of the material, and is beneficial to the plasticization of the material. According to different material characteristics, the plasticizing section S2 is provided with 3-5 sections of threads with different leads, and the threads are sequentially decreased progressively according to the leads in the material conveying direction, so that the material is conveyed forwards and compressed to achieve plasticizing, and the tail end of the plasticizing section is provided with an axial groove to improve the material dispersion plasticizing effect. The exhaust section S3 adopts a large lead, which is beneficial to exhaust, and when the corrugated pipe is formed, the pipe wall does not generate bubbles, thereby enhancing the quality of the pipe wall. The small diameter of the extrusion section S4 reduces the heat transfer area and the shear rate of the melt, allowing the melt to be extruded at lower temperatures. The extrusion section S4 is provided with 3-5 sections of threads with different leads, so that the materials are extruded uniformly.
The rotation direction of the double screws is opposite to the outside, so that the effects of compacting, melting and plasticizing of materials are enhanced.
The screw core is provided with an internal circulation temperature adjusting device for adjusting the temperature of the screw, and a heating device is added on the outer wall of the barrel of the mixer to be more beneficial to heat conduction.
The screw is a key part for conveying and plasticizing plastic, and when the screw rotates in the cylinder, the powder plastic is plasticized and then pushed to the machine head, so that the purposes of compaction, melting, mixing and plasticizing are achieved. The screw thread on the screw is composed of different screw pitches in sections, so that better conveying, compacting, mixing and plasticizing are achieved, and the purposes of water drainage and dehydration are achieved.
The foregoing shows and describes the general principles, general structure, and advantages of the present invention. It will be understood by those skilled in the art that variations and modifications in size and orientation may be made without departing from the spirit and scope of the utility model, which is intended to be protected by the following claims.
Claims (3)
1. Double screw extruder suitable for double-walled bellows, the double screw is located the barrel, and the one end and the aircraft nose connector of screw rod are connected, and the other end is connected its characterized in that with the feed inlet: the double screw is conical, the screw is divided into a feeding section, a plasticizing section, an exhaust section and an extrusion section from a feeding port to a machine head connector in sequence, the threads of the double screw are mutually meshed, an internal circulation temperature adjusting device is arranged at the core part of the screw, the plasticizing section is provided with 3-5 sections of threads with different lead lengths, the threads are gradually decreased according to the lead length of the material conveying direction, and the extrusion section is provided with 3-5 sections of threads with different lead lengths.
2. The twin screw extruder suitable for double-walled corrugated pipe of claim 1, wherein: the rotation direction of the double screws is in the opposite direction.
3. The twin screw extruder suitable for double-walled corrugated pipe of claim 1, wherein: the tail end of the plasticizing section is provided with an axial groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023246410.4U CN216153010U (en) | 2020-12-29 | 2020-12-29 | Double-screw extruder suitable for double-wall corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023246410.4U CN216153010U (en) | 2020-12-29 | 2020-12-29 | Double-screw extruder suitable for double-wall corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216153010U true CN216153010U (en) | 2022-04-01 |
Family
ID=80834182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023246410.4U Active CN216153010U (en) | 2020-12-29 | 2020-12-29 | Double-screw extruder suitable for double-wall corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216153010U (en) |
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2020
- 2020-12-29 CN CN202023246410.4U patent/CN216153010U/en active Active
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