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Planetary gear type mixing device

A gear type and planetary gear technology, which is applied in the field of planetary gear type mixing devices, can solve problems such as difficulty in ensuring machining accuracy and installation accuracy, weak propulsion and dispersion, and inaccurate temperature control, etc., to achieve moderate length and smooth flow , the effect of uniform flow

Active Publication Date: 2015-08-05
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the prior art, there are many equipment or devices suitable for plasticizing and mixing PVC, PE and other powder materials, such as a ten-screw planetary extruder disclosed in Chinese patent 201420139909.0, which is mainly used for PVC or polychlorinated Plasticizing and kneading of ethylene, but this equipment has problems such as a large number of screws, high cost, extremely inconvenient installation, and inaccurate temperature control; a planetary extruder disclosed in Chinese patent 201220152495.6 has the advantages of planetary screw, main screw And the modulus of the inner tooth sleeve, the number of teeth and the outer diameter of the planetary screw, the number of teeth and the outer diameter of the main screw, etc. have been improved, thereby reducing the phenomenon of planetary screw climbing, but the propulsion and dispersion of the device are weak ; Chinese patent 200720144148.8 discloses a planetary screw extruder with super-long planetary screw components, which is mainly used for plasticizing and mixing plastics, but the screw of the equipment is too long, so it is difficult to ensure processing accuracy and installation accuracy; , based on the good melting and plasticizing effect and continuous high-efficiency production capacity of the planetary screw extruder, the present invention researches and designs a planetary gear type mixing device suitable for rubber and other difficult-to-disperse materials, which has strong extrusion, rolling stretching, shearing, dispersing and mixing, and can be applied to the mixing of plastics, rubber and other materials

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] The planetary gear type mixing and extruding device involved in this embodiment includes two parts, a feeding section and a planetary section, and the specific structure (such as figure 1Shown) includes motor 1, coupling 2, reduction box 3, flange plate 4, No. 1 feed inlet 5, feeding hopper 6, feeding screw 7, barrel 8, inner bushing 9, right planet carrier 10 , No. Ⅱ feed inlet 11, sun gear screw 12, planetary gear screw 13, inner gear cylinder 14, left planet carrier 15, scraper plate 16, bearing seat 17, rotary joint 18, discharge port 19, No. 1 support frame 20. Base 21 and No. Ⅱ support frame 22. The reduction box 3 fixedly installed on the base 21 is connected to the motor 1 through the coupling 2. The cylinder 8 fixed on the base 21 by the No. 2 support frame 22 passes through the flange. The disc 4 is docked with the reduction box 3, and the barrel 8 is provided with the No. 1 feed port 5, and the No. 1 feed port 5 is fixedly welded with a funnel-shaped feeding ...

Embodiment 2

[0025] In this embodiment, the internal mixer equipped with the planetary gear type mixing device described in Example 1 and the conventional internal mixer (model X(S)M-1.7, Qingdao University of Science and Technology) in the prior art are used as comparative examples, Carry out mixing and performance testing of rubber samples to draw relevant conclusions.

example 1

[0027] In this example, it is a conventional internal mixer (model X(S)M-1.7, Qingdao University of Science and Technology) in the prior art. The internal mixer parameters are set as follows: filling factor 65±3%, rotor speed 55±3r / m, The temperature of the cooling water is 40±3℃, and the pressure of the top bolt is 0.6±0.05MPa;

[0028] Mixing process: Add 100 parts of natural rubber to the mixer for 30 seconds, then add 3.5 parts of zinc oxide, 2 parts of stearic acid, 1.5 parts of antioxidant RD, and 2 parts of plasticizer A into the mixing chamber Mix for 40 seconds, then add 30 parts of carbon black to the mixing room and mix for 40 seconds, and finally add the remaining 23.5 parts of carbon black to the mixing room for mixing, lift the top bolt once after 40 seconds, and mix again Refining for 40 seconds, unloading from the internal mixer, and then passing the roller on the open mixer to obtain the masterbatch; after parking for 3 hours, add 1.5 parts of accelerator NS a...

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Abstract

The invention belongs to the technical field of rubber mixing, and relates to a planetary gear type mixing device. A feeding section and a planetary section are combined in a split manner and are connected through a flange; a sun gear screw, planetary gear screws and an internal tooth cylinder of the planetary section are all in helical cylinder gear transmission; six planetary gear screws are connected by a left planetary carrier and a right planetary carrier into a whole body; each planetary gear screw is engaged with external teeth of the sun gear screw and internal teeth of the internal tooth cylinder respectively; the feed section and the planetary section are provided with cooling water passages respectively for filling a cooling medium or a heating medium; the left planetary carrier is provided with a scraper which contributes to discharge of a material from a discharge hole of the internal tooth cylinder; the length of the planetary section is moderate, so machining and mounting are facilitated, and proper mixing time is guaranteed; the device has the advantages of rational structure, scientific design, reliable principle, easiness and convenience in assembly, good dispersive mixing effect and wide application range.

Description

Technical field: [0001] The invention belongs to the technical field of rubber mixing, and specifically relates to a planetary gear mixing device, which is suitable for the transportation, plasticization and mixing of powder and heat-sensitive materials, as well as supplementary mixing of some difficult-to-disperse materials, and has good dispersion performance. Background technique: [0002] A planetary extruder is usually composed of a rotating system, an "extrusion system", a feeding system and a temperature control system. Its extrusion system has a unique structure. The planetary extruder is named for its characteristics of the extrusion system. The extrusion system of the planetary extruder is composed of a feeding section and a planetary section. The feeding section is equivalent to the feeding section of an ordinary single-screw extruder. This section establishes a very low pressure, and the screw groove is only partially filled with materials. The feeding section is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/60
CPCB29C48/585
Inventor 边慧光吴浩汪传生袁浪潘弋人王蒙位冬于本会
Owner QINGDAO UNIV OF SCI & TECH
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