Co-rotating differential multi-screw extruding machine with gradually changing type thread number and machining method thereof

A multi-screw extruder and gradient technology, applied in the field of twin-screw extruders, can solve the problems of weak stretching field, large and complex structure, high equipment cost, and achieve the effect of promoting interface renewal and expanding exhaust area. Effect

Inactive Publication Date: 2017-08-11
徐百平
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of equipment mainly adopts building block structure to adapt to various material systems. The mixing effect is improved by adopting structures such as multi-thread structure and reinforced kneading block. However, the structure of the flow channel is symmetrical, and it is impossible to introduce tensile field strengthening. dispersion effect
In order to achieve high dispersibility, a large number of kneading blocks with wider disks are used, and high speed is used to increase the shear rate, which in turn brings about a decrease in the mixing effect caused by a decrease in the residence time, and a longer length of time has to be used. Diameter ratio to prolong residence time
Moreover, the use of a large number of kneading blocks destroys the axial conveying capacity and self-cleaning function, which leads to dry friction between the screws and makes it difficult to control the temperature, which brings many problems such as high energy consumption, low efficiency and material deg

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Co-rotating differential multi-screw extruding machine with gradually changing type thread number and machining method thereof
  • Co-rotating differential multi-screw extruding machine with gradually changing type thread number and machining method thereof
  • Co-rotating differential multi-screw extruding machine with gradually changing type thread number and machining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This embodiment is a kind of co-rotating differential speed twin-screw extruder with gradually changing number of threads, its structure is as follows Figure 1-6 As shown, it includes a barrel 1 and a screw mechanism. The barrel 1 is provided with an inner cavity 2, and the screw mechanism is installed in the inner cavity. The screw mechanism includes a first screw 3 and a second screw 4, and the first screw and the second screw are connected to each other. Engage, and the outermost edges of the first screw and the second screw are tangent to the inner wall of the inner cavity; the first screw, the second screw and the inner cavity of the barrel form a flow channel; when the first screw and the second screw are in the same direction When rotating, the rotation speed of the first screw is twice the rotation speed of the second screw, and the two screws are always in meshing contact with each other to realize the self-cleaning function. Such as Figure 1-6 As shown, the...

Embodiment 2

[0087] This embodiment is a kind of co-rotating differential multi-screw extruder with gradually changing number of threads. Compared with Embodiment 1, the difference is that the screw mechanism also includes a third screw, and the structure of the third screw is the same as that of the first screw. The screws are the same, and the first screw, the second screw and the third screw are connected in sequence to form an in-line three-screw arrangement.

Embodiment 3

[0089] This embodiment is a kind of co-directional differential multi-screw extruder with gradual change in the number of threads. Compared with Embodiment 1, the difference is that the screw mechanism also includes a third screw, and the structure of the third screw is different from that of the second screw. The screws are the same, and the second screw, the first screw and the third screw are connected in sequence to form an in-line three-screw arrangement.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a co-rotating differential multi-screw extruding machine with the gradually changing type thread number and a machining method thereof. A first threaded rod in the extruding machine comprises two single-start thread elements, three single-start-gradually-changed-to-double-start transition thread elements, a double-start thread element and three double-start-gradually-changed-to-single-start transition thread elements; and a second threaded rod comprises two double-start thread elements, three double-start-gradually-changed-to-four-start transition thread elements, a four-start thread element and three four-start-gradually-changed-to-double-start transition thread elements. According to the machining method, a threaded rod mechanism achieves five enhancement mixing mechanisms by adopting the structure of the threaded rod mechanism, and conducts all-sided enhancement mixing on materials.

Description

technical field [0001] The invention relates to the technical field of twin-screw extruders, in particular to a co-rotating differential-speed multi-screw extruder and a processing method thereof. Background technique [0002] The co-rotating twin-screw extruder with self-cleaning function is a widely used mixing processing equipment at present. This type of equipment mainly includes a barrel and two twin-screws installed in parallel in the inner cavity of the barrel. This type of equipment mainly adopts building block structure to adapt to various material systems. The mixing effect is improved by adopting structures such as multi-thread structure and reinforced kneading block. However, the structure of the flow channel is symmetrical, and it is impossible to introduce tensile field strengthening. Dispersion effect. In order to achieve high dispersibility, a large number of kneading blocks with wider disks are used, and high speed is used to increase the shear rate, which...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B29C47/40B29C47/62B29C48/405B29C48/57B29C48/65
CPCB29C48/402B29C48/425B29C48/64B29C48/65B29C48/405B29C48/507B29C48/57B29C48/2513B29C48/2517
Inventor 徐百平喻慧文
Owner 徐百平
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap