Screw rod for separating plastics with different melting points and device including same
A screw and plastic technology, applied in the direction of plastic recycling and recycling technology, can solve the problems of high cost, complicated operation, low separation efficiency, etc., and achieve the effect of efficient separation and cost reduction
Active Publication Date: 2014-02-19
EAST CHINA UNIV OF SCI & TECH
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0010] The technical problem to be solved by the present invention is to provide a screw for separating plastics with different melting points and a device including it to overcome the defects of low efficiency, complicated operation and high cost of separating plastics with different melting points in the prior art, which can achieve Efficient and continuous separation of effects
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.
[0041] Such as figure 1 As shown, the screw 1 for separating plastics with different melting points according to the present invention includes a feeding section A and a melting section B, and the screw 1 is provided with a main flight 11 and a separating flight 12 . The main flight 11 surrounds the entire screw 1, and the starting end of the separation flight 12 is connected to the rear edge of the main flight 11 at the end of the feeding section A, so that the separation flight 12 is located behind the main flight 11. Furthermore, the separating flight 12 encircles the entire melting section B up to the end of the screw 1 in the same direction of rotation as the main flight 11 .
[0042] The screw groove between every two adjacent threads of the main screw thread 11 is separated into ...
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
Login to View More Abstract
The invention discloses a screw rod for separating plastics with different melting points; the screw rod comprises a charging section and a melting section; a main screw thread and a separating screw thread are arranged on the screw rod; the main screw thread encircles the overall screw rod, a start end of the separating screw thread is connected with a back edge of the main screw thread on the tail end of the charging section, thus the separating screw thread is located behind the main screw thread, and encircles the overall melting section till the tail end of the screw rod along the same encircling direction of the main screw thread ; a screw slot between each two adjacent screw threads of the main screw thread is separated to a liquid-phase screw slot and a solid-phase screw slot by the separating screw thread, the liquid-phase screw slot is sealed on the tail end of the screw rod; a hollow inner cavity is opened in the melting section, at least one radial flow channel is arranged on an upper surface on the tail end of the liquid-phase screw slot, thereby the liquid-phase screw slot is communicated with the hollow inner cavity. The invention separates the plastics with the different melting points, and respectively discharges the plastics in the two different solid and liquid modes, thus the continuous and high-efficient separation of the waste plastics can be realized, and the cost can be reduced.
Description
technical field [0001] The invention relates to a screw structure for polymer processing, in particular to a screw used for separating plastics with different melting points and a device including the same. Background technique [0002] In the field of polymer processing, due to the incompatibility of plastics of different polarities, the mixed products are prone to delamination, resulting in poor performance of the polymer. This is because different types of plastics have different melting points or softening points, and it is difficult to process them at the same processing temperature. Therefore, the separation of waste plastics is an important part of their recycling. [0003] At present, the plastic separation methods used mainly include manual separation, wind separation, electrostatic separation, flotation separation and low temperature separation. [0004] 1. The manual separation method can only identify plastics with large differences in surface properties, 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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B29B17/00
CPCY02W30/62
Inventor 谢林生马玉录吴张琪龚树云司向刘琥方程夏平沙金
Owner EAST CHINA UNIV OF SCI & TECH