TENGDA Is a Professional Plastic Extruder Machine Manufacturers in China.
Lab Scale TPE Thermoplastic Elastomers

Twin-screw extruder structure and type

by:TENGDA     2023-01-24

1. Structure and type

The twin-screw extruder is composed of several parts such as the transmission device, the feeding device, the barrel and the screw. The function of each part is similar to that of the single-screw extruder. Its structure is shown in Figure 1. The difference from the single-screw extruder is that there are two parallel screws in the twin-screw extruder placed in the '∞' cross-section material.

The twin-screw extruder used for profile extrusion is usually tightly meshed and counter-rotating, although a few also use co-rotating twin-screw extrusion, generally operated at a relatively low screw speed, about 10r/min . High-speed meshing co-rotating twin-screw extruder, used for compounding, exhaust or as a continuous chemical reactor, the maximum screw speed range of this type of extruder is 300-600r/min. Non-intermeshing extruders are used for mixing, venting, and chemical reactions, and their conveying mechanism is quite different from that of intermeshing extruders, which are closer to those of single-screw extruders, although they are fundamentally different.

2. Daily protection

1. After 500 hours of use, there will be iron filings or other impurities from the gear grinding in the gearbox. Therefore, the gears should be cleaned and the lubricating oil of the gearbox should be replaced.

2. After using it for a period of time, it is necessary to conduct a comprehensive inspection of the extruder to check the tightness of all screws.

3. If the power is suddenly cut off during production, the main drive and heating are suspended. When the power is restored, each section of the barrel must be heated to the specified temperature from the beginning and kept for a period of time before the extruder can be started.

4. If it is found that the surface and the pointer are fully turned, check whether the contact of the thermocouple equilateral line is released.

Nanjing Tengda Machinery Co., Ltd. works very hard to understand your objectives, then create a program that can help you meet them.
Nanjing Tengda Machinery Co., Ltd. also values the time, skills, and expert opinions of our staff. We are committed to providing fair and living wages, reasonable, structured work schedules, and clear duties and spheres of rights and responsibilities for each team member.
Nanjing Tengda Machinery Co., Ltd. expects to reach the desired profits in the first year and does not anticipate serious cash flow problems.
The plastic extruder machine manufacturers Application has significantly numerous benefits over other extruder machine manufacturers systems, which makes it first choice for plastic extruder machine manufacturers.
The value you get from watching how Nanjing Tengda Machinery Co., Ltd. operates and runs our company and the potential mentorship you would get from us will go a long way towards helping customers understand our company.
Custom message
Chat Online
Chat Online
Leave Your Message inputting...
Dear Sir or Madam, I will reply you as soon as possible. If you are urgent to ask, please contact 008619962017883. Hello, What can I help you?
Sign in with: