Underwater granulation apparatus used for polymer extrusion foaming

A technology of underwater granulation and extrusion foaming, applied in the field of mechanical equipment and manufacturing, to achieve the effect of large specific heat capacity

Active Publication Date: 2012-12-26
合肥圆融新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymer will generate static electricity to a certain extent in the process of preparation, transportation and molding. Due to the existence of static electricity, it is easy to block the conveying pipeline, resulting in failure to mold or greatly reducing the yield of molded products.

Method used

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  • Underwater granulation apparatus used for polymer extrusion foaming
  • Underwater granulation apparatus used for polymer extrusion foaming

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Embodiment Construction

[0020] See attached figure 1 , an underwater granulation device for polymer extrusion and foaming, including a pelletizer 1, the pelletizer 1 is closely attached to the underwater pelletizer head 2 through an axial locking device, and the underwater pelletizer Both sides of the head 2 are equipped with a driving valve 4 and a cutting chamber 3. The cutting chamber 3 is connected with a water circulation system 5. The water circulation system 5 is connected with a dehydrator 7 and a high-pressure water pump 6. The water pipes 14 of the water circulation system 5 are respectively connected in series. Water tank 8, high-pressure water pump 6, one-way valve 9, reversing valve 10, pressure gauge 11, stop valve 12, back pressure valve 13; check valve, reversing valve, pressure gauge, stop valve, back pressure valve include direct Dynamic manual adjustment valves, including pilot valves or pneumatic, hydraulic or electric control valves with remote control; pressure gauges include m...

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Abstract

The invention discloses an underwater granulation apparatus used for polymer extrusion foaming. The apparatus comprises a granulator which is tightly clung to an underwater granulation machine head; two sides of the underwater granulation machine head are provided with a driving valve and a cutting chamber; the cutting chamber is communicated with a water circulation system; the water circulation system is connected with a hydroextractor and a high-pressure water pump; and the water pipes of the water circulation system are connected with a water tank, the high-pressure water pump, a one-way valve, a reversing valve, a pressure gage, a globe valve and a counterbalance valve. The operating temperature of a cyclic medium is close to the processing temperature of polymer foaming, is at least of 100 DEG C or even higher. The cyclic medium is preferably water, and also comprises all organic or inorganic mediums which are non-toxic and not easy to burn, and has large specific heat capacity and relatively high boiling point, with the specific heat capacity larger than 2.09 KJ / (kg.K) and the boiling point equal to or higher than 100 DEG C.

Description

technical field [0001] The invention relates to a device used in the production process control of polymer extrusion and foaming particles, mainly an underwater granulation device for polymer extrusion and foaming with pressure regulation and control functions, belonging to mechanical equipment and manufacturing field. Background technique [0002] The production of foamed beads by extrusion is a polymer micro-foaming technology using supercritical carbon dioxide as a foaming agent. The foaming speed is fast and it is produced continuously. In order to make the cut particles uniform and meet a certain shape, the cutting speed of the cutting system must match the extrusion production speed. In the process of polymer extrusion and foaming, it is very difficult to control the pressure, but the control of the pressure drop rate is very important, which directly determines the overall performance and quality of the prepared foamed beads. The pressure drop rate can be controll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06
CPCB29B9/065
Inventor 何顺伦徐天艺郭洪武高振兴筱璘盛丽华
Owner 合肥圆融新材料有限公司
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