CN101654163B - 气密箱自封式箱口 - Google Patents

气密箱自封式箱口 Download PDF

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Publication number
CN101654163B
CN101654163B CN2009101873220A CN200910187322A CN101654163B CN 101654163 B CN101654163 B CN 101654163B CN 2009101873220 A CN2009101873220 A CN 2009101873220A CN 200910187322 A CN200910187322 A CN 200910187322A CN 101654163 B CN101654163 B CN 101654163B
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CN101654163A (zh
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孙炜
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Shenyang Hangying Electromechanical Technology Development Co Ltd
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Abstract

本发明提供了一种气密箱微压差自封式箱口，所要解决的问题是：目前气密箱的密封措施对于箱口较长的气密箱来说该密封措施不起作用。箱口及密封条的长度越长，箱口对密封条施压后、在箱口每一处都能实现均匀一致的压力的目标就越困难。本发明的要点是：它有箱口和密封条，所说的密封条由箱口支撑件、带上下两个延展边的密封条和延展边支撑条按照由外及里顺序组合构成，延展边支撑条置于密封条两个延展边之间。本发明的用途是：应用于气密箱箱口。

Description

气密箱自封式箱口
技术领域
本发明涉及一种气密箱自封式箱口。
背景技术
气密箱要求其箱口具有密封性，当气密箱的箱口合上后，一般地说箱内的气压会大于箱外。气密箱密封的措施通常是在其箱口镶嵌弹性密封条，合上箱口时箱口对弹性密封条施压，使其变形、与箱口紧密贴合。这种密封措施对于较小的气密箱即箱口较短的气密箱是有效的，但对于箱口较长的气密箱来说上述密封措施基本不起作用。这是因为，箱口及密封条的长度越长，箱口对密封条施压后、在箱口每一处都能实现均匀一致的压力的目标就越困难，某处压力过大会使该处密封条永久变形，失去密封作用；某处压力过小会漏气。其次，当若干个气密箱摞起来放置时，放置在下面的气密箱的上箱盖所承担的重量，会施加到箱口密封条上，促使其永久变形失去密封作用。
发明内容
为解决上述技术问题，本发明的目的在于提供一种气密箱自封式箱口。
本发明的目的是这样实现的：在箱口上设置密封组件，其特征是：所述的密封组件由箱口支撑件、带上下两个延展边的密封条和延展边支撑条按照由外及里顺序组合构成，延展边支撑条置于密封条两个延展边之间。
当气密箱合上箱口时，因箱内的气压会大于箱外，箱内的气体会从密封条延展边与箱口之间的缝隙流出，流动的气体会在该缝隙内产生负压，在每个延展边的两面形成压差，该气压差会使延展边变形，紧紧地贴合在箱口上，实现密封。之后，由于箱体内外还存在气压差，箱内的高压使密封条延展边持续地紧紧地贴合在上下箱口上。箱口支撑件与上下箱口是硬性接触，箱盖和箱体上部堆放物的重量压不到密封条上，密封条3保持在良好的弹性范围内工作，其密封作用可以长期的保持。
与现有技术相比，本发明的有益效果是：它利用箱体内外存在的气压差实现密封，不受气密箱的大小和箱口的形状限制，都能长时间保持箱内的压力，且压差越高密封性越好。同时，还解决了因储存和运输过程中多箱叠摞、上箱盖承重导致密封条永久变形的问题。
附图说明
下面结合附图进一步说明本发明。
附图是本发明的示意图。
具体实施方式
在箱口1和5上设置密封组件，所说的密封组件是由硬塑料箱口支撑件2、硅橡胶制成的带上下两个延展边的密封条3和海绵制成的延展边支撑条4按照由外及里的顺序组合构成，延展边支撑条4置于密封条的两个延展边之间。箱口支撑件2和密封条3的接触面为平面时可以采用胶粘连接，也可以采用如图所示的箱口支撑件为凹形、密封条3为凸形相互插接组合，此时不需要胶粘，便于拆卸。延展边应当很薄，以利于在延展边两面形成压差。

Claims (1)

1.一种气密箱自封式箱口，在箱口上设置密封组件，其特征是：所述的密封组件由箱口支撑件、带上下两个延展边的密封条和延展边支撑条按照由外及里的顺序组合构成，延展边支撑条置于密封条的两个延展边之间，箱口支撑件和密封条的接触面为凸凹形状，即箱口支撑件和密封条，一个呈凸形，另一个呈凹形，凸凹相互插接。
CN2009101873220A 2009-09-11 2009-09-11 气密箱自封式箱口 Expired - Fee Related CN101654163B (zh)

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CN101654163B true CN101654163B (zh) 2011-11-02

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87212130U (zh) * 1987-08-22 1988-04-27 孙渭滨 高压锅用长效助密封件
CN2931375Y (zh) * 2006-05-29 2007-08-08 中国国际海运集装箱(集团)股份有限公司 一种具有门槛装置的冷藏集装箱
CN201231924Y (zh) * 2008-05-06 2009-05-06 林呈新 可叠放水产品密封箱

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87212130U (zh) * 1987-08-22 1988-04-27 孙渭滨 高压锅用长效助密封件
CN2931375Y (zh) * 2006-05-29 2007-08-08 中国国际海运集装箱(集团)股份有限公司 一种具有门槛装置的冷藏集装箱
CN201231924Y (zh) * 2008-05-06 2009-05-06 林呈新 可叠放水产品密封箱

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