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Flow guiding device, vacuum infusion device and vacuum infusion method

A diversion device and vacuum infusion technology, applied in the field of diversion devices, can solve problems such as white spots on the surface of finished products, and achieve the effects of preventing white spots, reducing porosity, and improving quality

Inactive Publication Date: 2019-06-28
JIANGSU GOLDWIND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the vacuum infusion process in the prior art. During the infusion process, the residual gas in the draft tube will enter the mold for vacuum infusion, thereby causing white spots on the surface of the finished product, thereby providing a A diversion device capable of reducing residual gas in a diversion tube from entering a mold during vacuum infusion, a device for vacuum infusion, and a vacuum infusion method

Method used

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  • Flow guiding device, vacuum infusion device and vacuum infusion method
  • Flow guiding device, vacuum infusion device and vacuum infusion method
  • Flow guiding device, vacuum infusion device and vacuum infusion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, the embodiment of the present invention provides a diversion device, including a diversion structure and a switching device.

[0042] The flow guiding structure includes an injection channel 1, a main channel 2 and a branch channel 3. One end of the injection channel 1 is connected with a feeding device 7 containing liquid resin, and the other end is connected with the main channel 2 and the branch channel 3; one end of the main channel 2 is connected with the injection channel 1 and the branch channel 3, and the other end is connected with the mold 8; the branch channel 3 One end is connected to the main channel 2 and the injection channel 1, and the other end is connected to the vacuum pump 6. As an alternative embodiment, the liquid resin can also be replaced with other liquid materials, and the vacuum pump 6 can also be replaced with other suction devices.

[0043] The switching device includes a first on-off valve 41, a second on-off valve 42...

Embodiment 2

[0059] Such as figure 2 As shown, the difference between the second embodiment and the first embodiment is that the switching device is replaced with a first reversing valve 44, which is arranged at the communication place of the injection channel 1, the main channel 2 and the branch channel 3. The first reversing valve 44 may specifically be a two-position three-way valve with one inlet and one outlet.

[0060] The corresponding vacuum infusion method includes a vacuuming step, an exhausting step, and an infusion step.

[0061] The vacuuming step includes adjusting the first reversing valve 44 so that the branch channel 3 communicates with the main channel 2, and vacuuming the branch channel 3, the main channel 2 and the mold 8;

[0062] The exhausting step includes, after completing the vacuum, adjusting the first reversing valve 44 so that the injection channel 1 and the branch channel 3 are connected, and the gas between the first reversing valve 44 and the feeding device 7 in t...

Embodiment 3

[0066] Such as image 3 As shown, the difference between Embodiment 3 and Embodiment 2 is that the switching device further includes a fourth on-off valve 45 arranged on the injection channel 1.

[0067] The corresponding vacuum infusion method includes a vacuuming step, an exhausting step, and an infusion step.

[0068] The vacuuming step includes closing the first on-off valve 41, adjusting the first reversing valve 44, so that the branch channel 3 communicates with the main channel 2, and vacuuming the branch channel 3, the main channel 2 and the mold 8;

[0069] The exhausting step includes, after the vacuum is completed, the first on-off valve 41 is opened, the first reversing valve 44 is adjusted, the injection channel 1 is connected to the branch channel 3, and the first reversing valve 44 in the main channel 2 is connected to the feeder The gas between the devices 7 is discharged to the branch channel 3;

[0070] The filling step includes, after the gas between the first reve...

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Abstract

The invention provides a flow guiding device, a vacuum infusion device and a vacuum infusion method. The flow guiding device comprises a flow guiding structure and a switching device. The flow guidingstructure comprises an injection channel, a main channel and a branch channel, wherein one end of the injection channel is connected with a feeding device containing a liquid material, and the otherend of the injection channel is in communication with the main channel and the branch channel; one end of the main channel is in communication with the injection channel and the branch channel, and the other end of the main channel is in communication with a mold; and one end of the branch channel is in communication with the main channel and the injection channel, and the other end of the branchchannel is in communication with an air extracting device. The switching device is arranged in the flow guiding structure and at least has an exhaust state where the liquid material flows to the branch channel through the injection channel at first and an injection state where the liquid material flows to the mold through the injection channel later. According to the flow guiding device, gas in the injection channel before infusion can be eliminated, the gas is prevented from entering the mold during infusion, the porosity of a poured finished product can be further reduced, white spots on thesurface of the finished product can be prevented, and the quality of the poured finished product can be improved.

Description

Technical field [0001] The invention relates to the technical field of vacuum infusion, in particular to a flow guide device, a vacuum infusion device and a vacuum infusion method. Background technique [0002] As a new energy source with no pollution and low cost, wind energy is developing rapidly. Due to the light weight and stable performance of FRP blades, the blades of large and medium-sized fans are usually made of FRP. The glass fiber reinforced plastic blade is generally formed by vacuum infusion process. The existing vacuum infusion process is usually formed by laying fiber reinforced materials in a vacuum infusion mold, and introducing liquid resin in the resin barrel into the fiber reinforced material through a draft tube In the layup, the lower viscosity liquid resin is completely infiltrated into the fiber reinforced material layup under vacuum pressure. However, at the beginning of vacuum infusion molding, more air bubbles remaining in the draft tube will enter th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36
Inventor 王小敏何成智李阳阳
Owner JIANGSU GOLDWIND SCI & TECH CO LTD