Vacuum heat insulation cover plate for granulation template

A technology of vacuum heat insulation and cover plates, which is applied in the field of vacuum heat insulation cover plates for granulation templates, and can solve the problems that the effect of solid metal cover plates is not very obvious and cannot block heat conduction.

Inactive Publication Date: 2019-09-06
大连市锐耐特刀具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] These measures have played a certain role, but the outer cover plate of the prior art is a solid metal cover plate, which cannot effectively block heat conduction at t

Method used

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  • Vacuum heat insulation cover plate for granulation template
  • Vacuum heat insulation cover plate for granulation template
  • Vacuum heat insulation cover plate for granulation template

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0025] Specific implementation combined with figure 1 , figure 2 , image 3 , Figure 4 The first embodiment of the present invention is further described:

[0026] The lower cover plate 1, the middle support grid plate 2, and the upper cover plate 3 are formed by laser cutting.

[0027] Align the lower cover plate 1 with the outer circle of the middle support grid plate 2 and the upper cover plate 3, and align all the screw mounting holes, sandwich metal brazing solder between each layer, and connect the lower cover plate 1 with the middle The support grid plate 2 and the upper cover plate 3 are fixed, brazed and welded in a vacuum brazing furnace. After brazing, the inner and outer edge support rings 5 ​​and the support connecting ribs 7 and The cavities surrounded by the upper cover plate 3 form several independent vacuum chambers.

[0028] Clean up the solder flowing out after brazing, reshape, ream the screw mounting holes, sandblast and clean the surface of the low...

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PUM

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Abstract

The invention relates to an underwater granulator granulation template, in particular to a vacuum heat insulation cover plate for the granulation template. The vacuum heat insulation cover plate provided by the invention is arranged on the surfaces of an inner ring and an outer ring of the granulation template to be capable of insulating heat conduction, convection and radiation in these portions,the heat-preservation and heat-insulation performance of the portions is improved, the transmitting speed of temperature dropping generated by inner ring and outer ring areas under the action of cooling water towards the edge of a template granulation band is reduced, the temperature difference between the edge of the template granulation band and the central portion is reduced, and the granulation quality is improved. The vacuum heat insulation cover plate for the granulation template comprises a lower cover plate, a middle support grid plate, an upper cover plate and a high-temperature resistant heat insulation coating. According to the vacuum heat insulation cover plate for the granulation template, a main body area of the vacuum heat insulation cover plate is provided with a pluralityof independent vacuum cavities which do not communicate with each other, the inner side of the lower cover plate is provided with the high-temperature resistant heat insulation coating, and the outward convection, conduction and radiation loss of internal heat of the granulation template is insulated.

Description

technical field [0001] The invention relates to a granulation formwork of an underwater granulator, in particular to a vacuum heat insulation cover plate for the granulation formwork. Background technique [0002] The underwater granulator is a plastic granulation equipment in which the melt is extruded from the granulation template, the surface of the granulation belt is in contact with cooling water, and solidified by a granulation knife. The material in the molten state, under the extrusion of the screw of the extruder or the melting pump, enters the feeding cavity of the heated granulation template, and then is extruded to the discharge die hole, and extrudes the granulation template granulation belt When the surface is sprayed with cooling water, the molten material solidifies rapidly. In the gap between the cutting knives arranged at intervals, the material is extruded into a cylinder of predetermined length under the time difference between the two granulating knives ...

Claims

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Application Information

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IPC IPC(8): B29C48/30B29B9/06
CPCB29B9/06B29C48/30
Inventor 张宛力孙忠强寇晓春
Owner 大连市锐耐特刀具有限公司
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