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Method for producing PU gypsum rotational flow

A swirl and gypsum technology, applied in the field of manufacturing PU gypsum swirl devices, can solve problems such as unsuitable swirl devices

Inactive Publication Date: 2008-12-24
宁海县万松模具厂(普通合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing swirlers are mostly made of metal, and this manufacturing method is not suitable for making plastic swirlers

Method used

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  • Method for producing PU gypsum rotational flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method of manufacturing PU gypsum swirling device, first preheating PU polyester material at 50°C for 5 hours and then feeding it into the machine, then increasing the temperature of the heating cylinder to 150°C; turning on the booster device to adjust the pressure to 10 atmospheres, adding Press for 1 minute to press the PU polyester material into the mold; slowly cool the heating cylinder after forming, and drop to normal temperature within 30 minutes; finally exit the 4 parts of the formed PU plaster swirl device, including the feeding head 1. Overflow nozzle 2, barrel body 3 and tapered barrel body 4; the PU gypsum swirl device is finally assembled, one end of the overflow nozzle 2 is installed in the inner cavity of the feeding head 1, and the other end is connected through the barrel body 3 Conical barrel 4.

Embodiment 2

[0025] A method of manufacturing PU gypsum swirl device, first preheat PU polyester material at 70°C for 4 hours and then feed it into the machine, then increase the temperature of the heating cylinder to 220°C; turn on the booster device to adjust the pressure to 15 atmospheres, add Press for 2 minutes to press the PU polyester material into the mold; after forming, slowly cool the heating cylinder, and drop it to room temperature within 40 minutes; finally exit the 4 parts of the formed PU plaster swirl device, including the feeding head 1. Overflow nozzle 2, barrel body 3 and tapered barrel body 4; the PU gypsum swirl device is finally assembled, one end of the overflow nozzle 2 is installed in the inner cavity of the feeding head 1, and the other end is connected through the barrel body 3 Conical barrel 4.

Embodiment 3

[0027] A method of manufacturing PU gypsum swirl device, first preheat PU polyester material at 60°C for 4.5 hours and then feed it into the machine, then increase the temperature of the heating cylinder to 180°C; turn on the booster device to adjust the pressure to 13 atmospheres, add Press the PU polyester material into the mold for 1.5 minutes; cool the heating cylinder slowly after forming, and drop to normal temperature within 35 minutes; finally exit the 4 parts of the formed PU plaster swirl device, including the feeding head 1. Overflow nozzle 2, barrel body 3 and tapered barrel body 4; the PU gypsum swirl device is finally assembled, one end of the overflow nozzle 2 is installed in the inner cavity of the feeding head 1, and the other end is connected through the barrel body 3 Conical barrel 4.

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Abstract

The present invention relates to a method of producing a PU gypsum swirling device. The method includes the following steps: (1) plastic material is added; (2) the temperature of a heating cylinder is increased; (3) a pressure booster is opened, and the plastic material is pressed into a mould; (4) the heating cylinder cools off; (5) the formed part of the PU gypsum swirling device is taken out; (6) the PU gypsum swirling device is assembled. The method can efficiently produce the PU gypsum swirling device, and moreover, the produced product has the advantages of good rigidity, smooth surface and no deformation.

Description

technical field [0001] The invention belongs to the field of swirl devices, and in particular relates to a method for manufacturing a gypsum swirl device. Background technique [0002] At present, the exhaust gas of power plants must be desulfurized when it is discharged. Desulfurization is achieved through lime. After the lime absorbs sulfur, the oxidation reaction will form gypsum. The gypsum forms particles and needs to be processed by a swirl device and a circulating slurry pump. The limestone-gypsum slurry in the oxidation tank is pumped into the spray system on the upper part of the absorption tower, sprayed into the rising flue gas, and the flue gas is washed, and the sulfur dioxide in the flue gas is absorbed by the slurry through the material exchange between gas and liquid. The slurry falls into the oxidation reaction tank at the bottom of the absorption tower. In the oxidation tank, the limestone reacts with the absorbed sulfur dioxide to form gypsum, which is cry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/00B29C65/56B29K67/00B29L31/00
Inventor 潘绍元
Owner 宁海县万松模具厂(普通合伙)