Air drying device used for closed cavity and control method of device

A technology of air drying and control methods, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of humidity fluctuations in moisture-proof boxes, inability to open or close in time, and inappropriate closed cavity drying, etc., to achieve drying ability. boosted effect

Pending Publication Date: 2020-02-04
严铜
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  • Abstract
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  • Application Information

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Problems solved by technology

The disadvantages of this method are: First, the action of memory alloy is related to temperature, and the action has a large hysteresis, which cannot be opened or closed in time, which will cause a small amount of water to be discharged into the moisture-proof box at the beginning of regeneration, and the regeneration is completed. Finally, the desiccant will also absorb a small amount of external moisture due to the temperature drop; secondly, the moisture absorption process of the desiccant is intermittent, resulting in humidity fluctuations in the moisture-proof box
Therefore, this type of structure is not suitable for drying closed cavities

Method used

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  • Air drying device used for closed cavity and control method of device
  • Air drying device used for closed cavity and control method of device
  • Air drying device used for closed cavity and control method of device

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Embodiment Construction

[0030] In the following, the air drying device for a closed cavity and the control method of the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods, so as to better understand the technical idea claimed by the present invention.

[0031] Example of an air drying device for a closed cavity:

[0032] figure 1 Shown is a schematic structural diagram of an embodiment of a drying device using a drying box with one side opening. Such as figure 1 As shown, the air drying device includes two drying boxes, namely a first drying box 21 and a second drying box 22 . The first drying box 21 and its internal heating rod 211 , temperature sensor 212 , filled desiccant 213 and corresponding switching mechanism (not shown in the figure) constitute a first drying assembly. Similarly, the second drying box 22 and its internal heating rod 221 , temperature sensor 222 , filled desiccant 223 and corresponding switching me...

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Abstract

The invention discloses an air drying device used for a closed cavity and a control method of the device, and belongs to the technical field of moisture-proof equipment. The confined space is continuously dried by using two or more groups of drying components in a circulation manner, and an active switching mechanism driven by a motor and an electromagnet is adopted, so that switching of the connection state of a drying box can be quickly realized, and moisture diffused into the cavity during the switching can be almost negligible to realize the purpose of controlling the moisture in the closed cavity to an extremely low level. The solution improves the drying capacity of a current moisture-proof box by one or more orders of magnitude, and meets the application needs for strict moisture control in 3D printing supplies storage and the like.

Description

technical field [0001] The invention belongs to the technical field of moisture-proof equipment, and in particular relates to an air drying device and a control method for sealing a cavity. Background technique [0002] In the 3D printing industry, plastic consumables need to be dried before they are melted. If the undried plastic raw materials are directly used for printing, air bubbles will appear, and some plastics will even decompose, resulting in a decrease in mechanical properties and seriously affecting the molding effect. [0003] For most plastic materials, to ensure that the moisture content in the plastic raw materials is within an acceptable range, generally the ambient humidity needs to be kept below 700PPM at least, and it is best to control the humidity within 100PPM (100PPM corresponds to the relative humidity at 25°C ambient temperature about 0.41%). At present, the drying devices in the common moisture-proof boxes do not have such drying capacity. [000...

Claims

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Application Information

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IPC IPC(8): B01D53/28B01D53/26
CPCB01D53/261B01D53/28B01D2257/80B01D2258/06
Inventor 严铜
Owner 严铜
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