CN111266009B - Electric filtering device for micro-solution - Google Patents

Electric filtering device for micro-solution Download PDF

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Publication number
CN111266009B
CN111266009B CN202010191481.4A CN202010191481A CN111266009B CN 111266009 B CN111266009 B CN 111266009B CN 202010191481 A CN202010191481 A CN 202010191481A CN 111266009 B CN111266009 B CN 111266009B
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Prior art keywords
filter
liquid
storage bottle
filtered
liquid storage
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CN111266009A (en
Inventor
李娃
张超
尹强
张伟
徐嘉靖
苏琳
王宇光
朱方华
张帅
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Laser Fusion Research Center China Academy of Engineering Physics
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Laser Fusion Research Center China Academy of Engineering Physics
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    • 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
    • B01D61/147Microfiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D63/00Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08Flat membrane modules

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses an electric micro-solution filtering device, which comprises: the workbench is provided with a liquid storage bottle to be filtered, a cleaning liquid storage bottle, a linear sliding table and a liquid receiving platform; the speed reducing motor is fixedly connected to the linear sliding table; the six-way valve is connected with the speed reducing motor through a coupler; the liquid storage bottle to be filtered and the cleaning liquid storage bottle are respectively connected with a feed inlet of the six-way valve through a liquid guide pipe; the injector is characterized in that an injector cylinder of the injector is fixed at the top of the linear sliding table; the discharge hole of the six-way valve is connected with the discharge hole of the syringe barrel; the push rod of the injector is fixed on the slide block of the linear sliding table; one end of the filter supporting cantilever is connected to the linear sliding table, and the other end of the filter supporting cantilever is suspended in the air; the filter is connected to the suspension end of the filter supporting cantilever, and a feed inlet of the filter is connected with a discharge outlet of the syringe barrel through a transmission pipeline to be filtered; the liquid receiving platform is provided with a waste liquid storage bottle after cleaning and a plurality of solution liquid receiving bottles after filtering.

Description

Electric filtering device for micro-solution
Technical Field
The invention relates to the technical field of filtration, in particular to an electric micro-solution filtration device.
Background
In laser Inertial Confinement Fusion (ICF) physical experiments, self-supporting organic films are widely used. Because of the complexity of ICF research, there are very demanding requirements on the relevant polymer films, such as elemental composition and its distribution, size shape, surface quality, etc. At present, along with the progress of ICF physical experiments, the requirements of scientists on the cleanliness of films are also increasing. The introduction way of impurities in the film is mainly coating liquid, a substrate and glassware used in the process. The polymer coating liquid has high viscosity and high filtering difficulty.
The main current practice is to manually transfer the polymer solution into a needle filter (pore size: 0.45 μm and 0.22 μm) using a syringe, and to filter the solution into the lower glass vessel by manually pressing the syringe. The method has serious defects that: all the liquid transferring operations are manually completed by experimenters, so that the workload is high; meanwhile, the filter with a simple structure generally has long filtering time and is easy to cause secondary pollution of product liquid; and when the viscosity of the polymer solution is large, it is difficult to pass the polymer solution through the needle filter by manual pressing, resulting in extremely low filtration efficiency and failure to achieve the desired filtration effect.
Therefore, the simple manual filtering device used at present cannot meet the actual requirements of efficient, rapid and safe filtering of the polymer solution; therefore, how to design an electric micro-solution filtering device is a problem to be solved at present.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a micro-solution electro-dynamic filtration device comprising:
a workbench on which a liquid storage bottle to be filtered and a cleaning liquid storage bottle are placed;
the linear sliding table is vertically arranged on the workbench;
The gear motor is fixedly connected to the side face of the top of the linear sliding table;
the six-way valve is connected with the speed reducing motor through a coupler; the liquid storage bottle to be filtered and the cleaning liquid storage bottle are respectively connected with any two feed inlets of the six-way valve through a liquid guide pipe;
The injector is characterized in that an injector cylinder of the injector is fixed at the top of the linear sliding table; two sides of the upper end of the syringe barrel are respectively provided with a syringe barrel discharge hole; the discharge hole of the six-way valve is connected with the discharge hole of one side of the syringe barrel; one end of a push rod of the injector is connected with the piston and is arranged in the injector cylinder, and the other end of the push rod is positioned outside the injector cylinder and is fixed on a sliding block of the linear sliding table;
One end of the filter supporting cantilever is connected to the linear sliding table, and the other end of the filter supporting cantilever is suspended in the air;
A filter connected to a suspension end of the filter support cantilever; the feed inlet of the filter is connected with the discharge outlet of the syringe barrel at the other side of the syringe barrel through a transmission pipeline to be filtered;
The liquid receiving platform is arranged on the workbench through the electric rotating platform; the liquid receiving platform is provided with a waste liquid storage bottle after cleaning and a plurality of liquid receiving bottles for filtered solution; and the waste liquid storage bottle after cleaning and the solution receiving bottles after filtering can be sequentially positioned below the discharge port of the filter through the rotation of the electric rotating table.
Preferably, the filter comprises: the filter comprises a filter upper cover and a filter lower cover which are in threaded connection, wherein a filter membrane is arranged between the filter upper cover and the filter lower cover, and a liquid inlet pipe is arranged on the filter upper cover; the suspension end of the filter supporting cantilever is provided with a liquid inlet and a threaded liquid outlet, and the liquid inlet on the suspension end is communicated with a transmission pipeline to be filtered; the threaded liquid outlet on the suspension end is in threaded connection with the liquid inlet pipe on the upper cover of the filter; and a conical liquid outlet pipe is arranged on the lower cover of the filter.
Preferably, the filter membrane is a hydrophilic filter membrane or a hydrophobic filter membrane; the pore diameter of the filter membrane is any one of 22 μm, 45 μm, 80 μm and 100 μm.
Preferably, the liquid receiving platform is a cylindrical platform, a plurality of cylindrical accommodating cavities are arranged at the edge of the liquid receiving platform, and filtered solution receiving bottles are arranged in the cylindrical accommodating cavities; the center of the cylindrical platform is provided with a post-cleaning waste liquid storage bottle, and a liquid inlet of the post-cleaning waste liquid storage bottle is positioned at the edge of the cylindrical platform and has the same circumference with the plurality of cylindrical accommodating cavities.
Preferably, the plurality of cylindrical accommodating cavities are 8 cylindrical accommodating cavities, and 8 filtered solution receiving bottles are correspondingly arranged.
The invention at least comprises the following beneficial effects: according to the invention, the injector is arranged on the linear sliding table, so that the extraction and extrusion of the filtered solution can be controlled electrically, the filtering efficiency is improved, and particularly, the polymer with larger viscosity is filtered; the filter can be conveniently detached, the liquid receiving platform can be electrically rotated, and the filtering capacity can be increased by arranging a plurality of filtered solution liquid receiving bottles; the whole device reduces the manual operation process, improves the filtering efficiency and reduces the occurrence of secondary pollution.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an electric micro-solution filtering device according to the present invention;
FIG. 2 is a schematic diagram of the structure of a syringe of the electric micro-solution filtering device of the present invention;
FIG. 3 is a schematic diagram showing the structure of a filter of the electric micro-solution filtering device of the present invention;
FIG. 4 is a schematic plan view of a filter of the electric micro-solution filtering device of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Figures 1-4 illustrate that the present invention provides an electrically operated micro-solution filtration device comprising:
a workbench 1 on which a liquid storage bottle 2 to be filtered and a cleaning liquid storage bottle 3 are placed;
A linear slide table 4 vertically provided on the table 1;
a gear motor 5 fixedly connected to the side surface of the top of the linear sliding table 4;
A six-way valve 6 connected with the gear motor 5 through a coupling 7; the liquid storage bottle 2 to be filtered and the cleaning liquid storage bottle 3 are respectively connected with any two feed inlets of the six-way valve 6 through liquid guide pipes;
A syringe, the syringe barrel 8 of which is fixed on the top of the linear sliding table 4; two sides of the upper end of the syringe barrel 8 are respectively provided with a syringe barrel discharge hole; the discharge port of the six-way valve 6 is connected with the discharge port 80 of one side of the syringe barrel; one end of a push rod 9 of the injector is connected with a piston 10 and is arranged in the injector cylinder 8, and the other end of the push rod 9 is positioned outside the injector cylinder 8 and is fixed on a sliding block 40 of the linear sliding table 4;
A filter supporting cantilever 11, one end of which is connected to the linear sliding table 4 and the other end of which is suspended;
A filter 12 connected to a suspension end of the filter support cantilever 11; the feed inlet of the filter 12 is connected with the discharge outlet 81 of the syringe barrel on the other side of the syringe barrel 8 through a transmission pipeline 13 to be filtered;
a liquid receiving platform 14 provided on the table 1 through an electric rotary table 15; the liquid receiving platform 14 is provided with a waste liquid storage bottle 16 after cleaning and a plurality of liquid receiving bottles 17 for filtered solution; and the cleaned waste liquid storage bottle 16 and the plurality of filtered solution receiving bottles 17 can be sequentially positioned below the discharge hole of the filter 12 through the rotation of the electric rotary table 15.
In the technical scheme, a polymer solution to be filtered is added into a liquid storage bottle to be filtered, a six-way valve is controlled to rotate through a reducing motor, one of feed ports of the six-way valve (the feed port connected with the liquid storage bottle to be filtered) is communicated with a discharge port, a push rod of a syringe is controlled to move downwards through sliding of a slide block of a linear sliding table, the polymer solution to be filtered is pumped into the syringe through a discharge port 80 of one side of the syringe barrel, then the six-way valve is controlled to rotate through the reducing motor, the discharge port of the six-way valve is closed (for example, the feed port of one of the six-way valve is communicated with the discharge port after being blocked), the push rod of the syringe is controlled to move upwards through sliding of the slide block of the linear sliding table, the polymer solution to be filtered in the syringe barrel is extruded from the discharge port 81 of the other side of the syringe barrel, the filtered polymer solution enters the liquid receiving bottle on a liquid receiving platform through a transmission pipeline 13 to be filtered, the liquid receiving platform is rotated through rotation of an electric rotating table, and the liquid receiving bottle after different filtered solutions are replaced, and liquid receiving is completed; after the filtration is completed, the cleaning solution is added into the cleaning solution storage bottle, then the six-way valve is controlled to rotate through the gear motor, one of the feed inlets of the six-way valve (the feed inlet connected with the cleaning solution storage bottle) is communicated with the discharge outlet, the push rod of the injector moves downwards through controlling the sliding block of the linear sliding table, the cleaning solution is pumped into the injector cylinder through the discharge outlet 80 of the injector cylinder on one side of the injector cylinder, then the six-way valve is controlled to rotate through the gear motor, the discharge outlet of the six-way valve is closed, the sliding block of the linear sliding table is controlled to slide, the push rod of the injector moves upwards, the cleaning solution in the injector cylinder is extruded from the discharge outlet 81 of the injector cylinder on the other side of the injector cylinder, the cleaning solution enters the filter through a to be filtered and is cleaned (or the filter is directly removed) through the rotation of the electric rotating table, the liquid receiving platform is rotated, the cleaned waste storage bottle is rotated to the lower part of the filter, and the cleaned solution enters the cleaned waste liquid storage bottle on the liquid receiving platform to complete cleaning.
In the above-described aspect, the filter 12 includes: a filter upper cover 120 and a filter lower cover 121 which are connected through threads, wherein a filter membrane 123 is arranged between the filter upper cover 120 and the filter lower cover 121, and a liquid inlet pipe 124 is arranged on the filter upper cover; the suspension end of the filter supporting cantilever 11 is provided with a liquid inlet and a threaded liquid outlet 110, and the liquid inlet 111 on the suspension end is communicated with a transmission pipeline 13 to be filtered; the threaded liquid outlet on the suspension end is in threaded connection with the liquid inlet pipe 124 on the filter upper cover 120; the lower filter cover 121 is provided with a conical outlet tube 125, in such a way that the filter and the filter membrane can be easily removed.
In the technical scheme, the filter membrane is a hydrophilic filter membrane or a hydrophobic filter membrane; the pore diameter of the filter membrane is any one of 22 μm, 45 μm, 80 μm and 100 μm; in this way, different filters can be replaced according to the hydrophilicity and hydrophobicity of the liquid to be filtered; and the filter membranes with different pore diameters can be selected according to the viscosity of the polymer and the filtering degree.
In the above technical solution, the liquid receiving platform 14 is a cylindrical platform, and a plurality of cylindrical receiving cavities 141 are provided at the edge of the liquid receiving platform, and the filtered solution receiving bottles 17 are placed in the plurality of cylindrical receiving cavities; the post-cleaning waste liquid storage bottle 16 is placed in the center of the cylindrical platform, and the liquid inlet 161 of the post-cleaning waste liquid storage bottle 16 is located at the edge of the cylindrical platform and is in the same circumference with the plurality of cylindrical accommodating cavities.
In the above technical solution, the plurality of cylindrical accommodating chambers 141 are 8 cylindrical accommodating chambers, and correspondingly are provided with 8 filtered solution receiving bottles, so that the capacity of the filtered sample can be ensured; the cleaning liquid is connected into the waste liquid storage bottle after cleaning, the capacity of the waste liquid storage bottle after cleaning is large, multiple cleaning can be guaranteed, and the dumping workload is reduced.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims (2)

1. An electrically operated micro-solution filtration device, comprising:
a workbench on which a liquid storage bottle to be filtered and a cleaning liquid storage bottle are placed;
the linear sliding table is vertically arranged on the workbench;
The gear motor is fixedly connected to the side face of the top of the linear sliding table;
the six-way valve is connected with the speed reducing motor through a coupler; the liquid storage bottle to be filtered and the cleaning liquid storage bottle are respectively connected with any two feed inlets of the six-way valve through a liquid guide pipe;
The injector is characterized in that an injector cylinder of the injector is fixed at the top of the linear sliding table; two sides of the upper end of the syringe barrel are respectively provided with a syringe barrel discharge hole; the discharge hole of the six-way valve is connected with the discharge hole of one side of the syringe barrel; one end of a push rod of the injector is connected with the piston and is arranged in the injector cylinder, and the other end of the push rod is positioned outside the injector cylinder and is fixed on a sliding block of the linear sliding table;
One end of the filter supporting cantilever is connected to the linear sliding table, and the other end of the filter supporting cantilever is suspended in the air;
A filter connected to a suspension end of the filter support cantilever; the feed inlet of the filter is connected with the discharge outlet of the syringe barrel at the other side of the syringe barrel through a transmission pipeline to be filtered;
The liquid receiving platform is arranged on the workbench through the electric rotating platform; the liquid receiving platform is provided with a waste liquid storage bottle after cleaning and a plurality of liquid receiving bottles for filtered solution; the cleaned waste liquid storage bottles and the plurality of filtered solution receiving bottles can be sequentially positioned below the discharge hole of the filter by the rotation of the electric rotating table;
The filter includes: the filter comprises a filter upper cover and a filter lower cover which are in threaded connection, wherein a filter membrane is arranged between the filter upper cover and the filter lower cover, and a liquid inlet pipe is arranged on the filter upper cover; the suspension end of the filter supporting cantilever is provided with a liquid inlet and a threaded liquid outlet, and the liquid inlet on the suspension end is communicated with a transmission pipeline to be filtered; the threaded liquid outlet on the suspension end is in threaded connection with the liquid inlet pipe on the upper cover of the filter; a conical liquid outlet pipe is arranged on the lower cover of the filter;
The filter membrane is a hydrophilic filter membrane or a hydrophobic filter membrane; the pore diameter of the filter membrane is any one of 22 μm, 45 μm, 80 μm and 100 μm;
The liquid receiving platform is a cylindrical platform, a plurality of cylindrical accommodating cavities are formed in the edge of the liquid receiving platform, and filtered solution receiving bottles are placed in the cylindrical accommodating cavities; the center of the cylindrical platform is provided with a post-cleaning waste liquid storage bottle, and a liquid inlet of the post-cleaning waste liquid storage bottle is positioned at the edge of the cylindrical platform and has the same circumference with the plurality of cylindrical accommodating cavities.
2. The motorized micro-solution filter apparatus of claim 1, wherein the plurality of cylindrical receiving chambers is 8 cylindrical receiving chambers, and 8 filtered solution receiving bottles are correspondingly disposed.
CN202010191481.4A 2020-03-18 2020-03-18 Electric filtering device for micro-solution Active CN111266009B (en)

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CN115155148B (en) * 2022-06-09 2023-09-01 北京科技大学 Ultra-precise automatic micro-reaction solution filtering device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211936400U (en) * 2020-03-18 2020-11-17 中国工程物理研究院激光聚变研究中心 Electric filtering device for micro-solution

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI281415B (en) * 2005-01-05 2007-05-21 Tsung-Ming Tsao A filtering apparatus for high efficient collection of nanoparticles
TWI342228B (en) * 2006-12-29 2011-05-21 Ind Tech Res Inst Extracted liquid automatic collecting equipment and method thereof
CN101224350A (en) * 2007-01-15 2008-07-23 财团法人工业技术研究院 Extract liquid automatic collecting device and method thereof
US8776621B2 (en) * 2009-03-06 2014-07-15 Dionex Corporation Fluid sample delivery system and method
CN102091455B (en) * 2010-12-16 2012-08-29 中国科学院高能物理研究所 Automatic continuous filter
US10525389B2 (en) * 2012-01-16 2020-01-07 Jk Industries, Llc Sludge concentrator assembly with varying first stage separator, combined with a second stage, clean flow outlet incorporating fixed and variable flow restrictor orifices
CN104437702B (en) * 2014-11-21 2016-04-06 陈永欣 Multichannel filter
JP2017039093A (en) * 2015-08-20 2017-02-23 株式会社 ユメックス Filtration device and waste liquid treatment system
CN207174110U (en) * 2017-09-25 2018-04-03 深圳杏林春暖科技股份有限公司 Bottled powder filling machine
DE102017125881B4 (en) * 2017-11-06 2019-06-19 Sartorius Stedim Biotech Gmbh Filter module and method for detecting microorganisms
CN108165483A (en) * 2017-12-29 2018-06-15 山东省医疗器械产品质量检验中心 1.2 μm of normal pore size liquid medicine filter Candida albicans rejection tests device and method
CN108939650A (en) * 2018-05-22 2018-12-07 中国海洋大学 A kind of automatic Suction filtration device of seawater
CN209490693U (en) * 2018-09-14 2019-10-15 农业部渔业环境及水产品质量监督检验测试中心(天津)(天津市质量监督检验站第二十三站、天津市渔业环境及水产品质量监督检验测试中心) Membrane filtration device and sedimeter
CN109540640B (en) * 2018-11-29 2023-10-10 中国科学院合肥物质科学研究院 Automatic change soil pressure filter equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211936400U (en) * 2020-03-18 2020-11-17 中国工程物理研究院激光聚变研究中心 Electric filtering device for micro-solution

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