CN204182492U - 一种离心过滤管 - Google Patents

一种离心过滤管 Download PDF

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CN204182492U
CN204182492U CN201420626461.5U CN201420626461U CN204182492U CN 204182492 U CN204182492 U CN 204182492U CN 201420626461 U CN201420626461 U CN 201420626461U CN 204182492 U CN204182492 U CN 204182492U
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centrifuge tube
tube
filter membrane
centrifugal filtration
aperture
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刘玥萌
刘武元
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BEIJING ABILITY TECHNOLOGY Co.,Ltd.
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刘玥萌
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Priority to US15/511,072 priority patent/US10092911B2/en
Priority to PCT/CN2015/084924 priority patent/WO2016065957A1/zh
Priority to EP15854379.3A priority patent/EP3213821A4/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/502Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5021Test tubes specially adapted for centrifugation purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B7/00Elements of centrifuges
    • B04B7/08Rotary bowls
    • B04B7/12Inserts, e.g. armouring plates
    • B04B7/16Sieves or filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/54Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • B01D46/543Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/18Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D63/00Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/16Rotary, reciprocated or vibrated modules
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/26Polyalkenes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/26Polyalkenes
    • B01D71/262Polypropylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/30Polyalkenyl halides
    • B01D71/32Polyalkenyl halides containing fluorine atoms
    • B01D71/36Polytetrafluoroethene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/38Hydrophobic membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/06Fluid handling related problems
    • B01L2200/0684Venting, avoiding backpressure, avoid gas bubbles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00Additional constructional details
    • B01L2300/06Auxiliary integrated devices, integrated components
    • B01L2300/0681Filter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00Moving or stopping fluids
    • B01L2400/04Moving fluids with specific forces or mechanical means
    • B01L2400/0403Moving fluids with specific forces or mechanical means specific forces
    • B01L2400/0409Moving fluids with specific forces or mechanical means specific forces centrifugal forces

Abstract

本实用新型公开了一种离心过滤管,该离心过滤管包括离心管(2)和套装在所述离心管(2)内的离心管(1),其特征在于所述离心管(1)侧壁上设有若干出气定容孔(7)和多个小孔(4);其中,所述出气定容孔(7)位于所述小孔(4)上方,所述小孔(4)覆盖有滤膜。本实用新型具有简便、快捷、高效和低成本的优点,尤其是对于大批量样品数的分析工作而言,可以节省大量的人力和时间。

Description

一种离心过滤管
技术领域
本实用新型涉及一种离心过滤管,属于化学分析技术领域。
背景技术
根据各种研究目的的需要,经常需要将样品如土壤、肉类、水体、动植物等进行提取或消解等液化处理,而且需要分离除去这些处理液中的固体小颗粒后才能用于到各种大型高精度仪器(如流动分析注射仪、液相色谱质谱联用仪等)中进行测试,否则,这些颗粒会堵塞仪器的进样通道或使进样管路受到磨损,从而使仪器出现故障或缩短寿命。现有的解决方案是抽滤或加压过滤,但对于大批量样品而言,效率低下,费时费力。
专利文献CN202290316U中描述了一种双层管,其内管上通过设置一些开孔,用于阻挡聚合物小球,使其仅在重力的作用(静止状态)下液体就可以流出,但是其作用仅相当于一个筛网,即仅能实现简单的固液分离处理,无法实现液体的可控流动,更不能实现亲水性和憎水性液体的分离。
实用新型内容
本实用新型的主要目的是提供一种离心过滤管,使得对一些生物或化学样品分析变得更加高效、快捷、方便。
本实用新型的技术方案为:
一种离心过滤管,包括离心管2和套装在所述离心管2内的离心管1,其特征在于所述离心管1上设有若干出气定容孔7,所述离心管1侧壁上多个小孔4;其中,所述出气定容孔7位于所述小孔4上方,所述小孔4覆盖有滤膜。
进一步的,所述出气定容孔7位于所述离心管1侧壁上部,所述小孔4位于所述离心管1侧壁中部。
进一步的,所述出气定容孔7位于所述离心管1的顶盖上,所述小孔4位于所述离心管1侧壁中部。
进一步的,所述滤膜位于所述离心管2的内壁,覆盖所述小孔4。
进一步的,所述滤膜为微孔滤膜。
进一步的,所述滤膜为聚丙烯微孔滤膜。
进一步的,所述滤膜为聚四氟乙烯空气过滤膜。
进一步的,所述滤膜为疏水滤膜。
本实用新型给出的离心过滤管在开孔的内管上覆有微孔滤膜,由于该微孔滤膜有较大的表面张力,当仅有重力存在时(静止状态),该膜内的液体并不会流出,此时相当于一个关闭的阀门;而当该管被放入离心机中高速旋转时,由于离心力克服了液体的表面张力,才会使膜内的液体流出,此时相当于一个打开的阀门。该管小孔上所覆的膜,实际上是一个在离心力作用下的阀门,可用离心转速控制其开启和关闭,与筛网的作用完全不同。本实用新型的实际效果:只需低速(2000-4000rpm)、短暂(3-5min)的一次离心即可,特别适用于对于大批量样品数的科研工作者,可以节省大量的人力和时间。
本实用新型的内容可以通过以下技术来实现:一种塑料离心过滤管,包括在离心管1侧壁管中间处开有1个或n个小孔,用一层滤膜将小孔封住,离心管1侧壁上有一出气孔,用于在离心过程中平衡内外气压,其主要特点还包括将此管放置于另一50mL的商业离心管2中;当试验开始时,将待离心过滤的悬浊液置于离心管2中,然后将侧壁开有小孔贴有滤膜的离心管1置于离心管2中,启动离心机,这时液位高于小孔的液体会随着离心力甩入到离心管1中,达到溶液快速澄清的目的。
与现有技术相比,本实用新型的有益效果:
只需低速(2000~4000rpm)、短暂(2~3min)的一次离心即可,具有简便、快捷、高效和低成本的优点,尤其是对于大批量样品数的分析工作而言,可以节省大量的人力和时间。
附图说明
图1为离心管示意图。
图2为离心管剖面图。
其中,1-小离心管,2-大离心管,3-滤膜;4-小孔,5-小离心管1的顶盖,6-大离心管2的顶盖,7-出气定容孔,11-小离心管1侧壁,21-大离心管2侧壁,31-滤膜3的剖面。
具体实施方式
下面结合附图对本实用新型进行进一步详细描述:
图1为离心管示意图,图中1为小离心管;2为大离心管;3为贴附在小离心管侧壁上的一层滤膜;4为小离心管1上开的小孔,被滤膜3完全覆盖;5为小离心管1的顶盖;6为大离心管2的顶盖;7为在小离心管1上部开的出气定容孔(出气定容孔7也可以设置于小离心管1的顶盖上)。具体内容为在大离心管2顶盖上开一个大孔,将小离心管1装入,小离心管1上部处开一出气定容孔7用于排气、定容。
图2为离心管剖面图,11为小离心管1侧壁,21为大离心管2侧壁,31为滤膜3的剖面。
实施例1:将待澄清液体放于市售离心管2中,将离心管1放置于其中,启动离心机,待澄清液体将通过侧壁上的小孔流入到离心管1中,根据不同的膜的孔径不同,可以将大分子或大颗粒挡在离心管1外,这样离心管1中可以得到较为纯净的溶液。
实施例2:其中侧壁上所贴的膜,可以是不同型号的PP聚丙烯微孔滤膜或是PTFE聚四氟乙烯空气过滤膜、疏水滤膜,也可以是其它可以达到实验目的各种滤膜。

Claims (8)

1.一种离心过滤管,包括离心管(2)和套装在所述离心管(2)内的离心管(1),其特征在于所述离心管(1)上设有若干出气定容孔(7),所述离心管(1)侧壁上多个小孔(4);其中,所述出气定容孔(7)位于所述小孔(4)上方,所述小孔(4)覆盖有滤膜。
2.如权利要求1所述的离心过滤管,其特征在于所述出气定容孔(7)位于所述离心管(1)侧壁上部,所述小孔(4)位于所述离心管(1)侧壁中部。
3.如权利要求1所述的离心过滤管,其特征在于所述出气定容孔(7)位于所述离心管(1)的顶盖上,所述小孔(4)位于所述离心管(1)侧壁中部。
4.如权利要求1或2或3所述的离心过滤管,其特征在于所述滤膜位于所述离心管(2)的内壁,覆盖所述小孔(4)。
5.如权利要求4所述的离心过滤管,其特征在于所述滤膜为微孔滤膜。
6.如权利要求5所述的离心过滤管,其特征在于所述滤膜为聚丙烯微孔滤膜。
7.如权利要求5所述的离心过滤管,其特征在于所述滤膜为聚四氟乙烯空气过滤膜。
8.如权利要求5所述的离心过滤管,其特征在于所述滤膜为疏水滤膜。
CN201420626461.5U 2013-12-05 2014-10-27 一种离心过滤管 Active CN204182492U (zh)

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CN201420626461.5U CN204182492U (zh) 2013-12-05 2014-10-27 一种离心过滤管
US15/511,072 US10092911B2 (en) 2013-12-05 2015-07-23 Centrifuge filter tube
PCT/CN2015/084924 WO2016065957A1 (zh) 2014-10-27 2015-07-23 一种离心过滤管
EP15854379.3A EP3213821A4 (en) 2014-10-27 2015-07-23 Centrifuge filter tube

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CN107475094A (zh) * 2017-08-11 2017-12-15 河南科技大学第附属医院 一种血细胞分离管和分离方法
CN111068936A (zh) * 2019-10-24 2020-04-28 陈晖� 一种分子生物学固液分离置管离心系统

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Address after: 100085 room 0112-91, 01 / F, No.26, shangdixinxi Road, Haidian District, Beijing

Patentee after: BEIJING ABILITY TECHNOLOGY Co.,Ltd.

Address before: 100085 Room 502, unit 6, building 1, qingfenghua Jingyuan community, Haidian District, Beijing

Patentee before: Liu Yuemeng

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