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Vacuum defoaming device

A technology of vacuum defoaming and vacuum pump, applied in the direction of foam dispersion/prevention, etc., can solve the problems of difficult discharge of air bubbles, high resin viscosity, high surface tension, etc., to improve product surface quality, ensure vacuum sealing effect, and improve product quality Effect

Active Publication Date: 2015-12-09
ANHUI RIZEN AUTO PARTS
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  • Abstract
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AI Technical Summary

Problems solved by technology

The use of the traditional vacuum defoaming process has limitations. For workpieces that are potted with epoxy resin, the viscosity of the resin is relatively high, the surface tension is high, the thickness of the potting is thick, and the bubbles are not easy to discharge. It is not easy to break, and gathers on the surface of the colloid, that is, gathers on the surface of the workpiece, which affects the surface quality of the workpiece and the vacuum sealing effect

Method used

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  • Vacuum defoaming device

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Embodiment Construction

[0017] With reference to the accompanying drawings, the specific implementation of the present invention will be further described in detail through the description of the best embodiment.

[0018] Such as figure 1 As shown, the vacuum degassing device includes a vacuum chamber 2 for placing a workpiece 3, and the vacuum chamber 2 is connected with a vacuum pump 4 and a high-pressure air injection nozzle 1. Turn on the vacuum pump 4 to vacuum. After the vacuum in the vacuum chamber 2 reaches the closed set value or the vacuum pump 4 reaches the set time, turn off the vacuum pump 4; open the high-pressure air injection nozzle 1, and the high-pressure air quickly enters the vacuum chamber 2. The bubble on the surface of the workpiece 3 bursts due to the rapid change of the internal and external pressure difference. At the same time, the pressure of the rapidly injected high-pressure gas acts on the surface of the bubble so that the bubble is blown; this way repeated two to four cyc...

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Abstract

The invention discloses a vacuum defoaming device. The vacuum defoaming device comprises a vacuum chamber used for accommodating workpieces; the vacuum chamber is connected with a vacuum pump and a high pressure air injection nozzle; the high pressure air injection nozzle is opened, and high pressure air enters into the vacuum chamber quickly, so that foams on the surfaces of colloids on the workpieces break because of rapid change of inside-outside pressure different, and the high pressure gas which enters into the vacuum chamber quickly is applied onto the surfaces of the foams so as to broke the foams. Excellent defoaming effect can be achieved; product surface quality is increased; vacuum sealing effect of the workpieces is ensured; and product quality is improved.

Description

Technical field [0001] The invention relates to a surface colloid defoaming technology using colloidal workpieces, in particular to a vacuum defoaming device. Background technique [0002] For electronic devices that need to ensure the internal vacuum, the surface of the electronic device is treated with a colloidal potting process. Since the surface of the colloid is prone to residual bubbles, it is necessary to remove the bubbles on the surface of the colloid. The use of traditional vacuum degassing technology has limitations. For workpieces potted with epoxy resin, the resin viscosity is relatively large, the surface tension is large, the potting thickness is thick, and the bubbles are not easy to discharge. The bubbles overflow inside the colloid because of the surface tension of the colloid. It is not easy to break and gathers on the surface of the colloid, that is, gathers on the surface of the workpiece, which affects the surface quality of the workpiece and the vacuum sea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/02
Inventor 张琦
Owner ANHUI RIZEN AUTO PARTS
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