CN103212228B - Vacuum filter - Google Patents
Vacuum filter Download PDFInfo
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- CN103212228B CN103212228B CN201310146784.4A CN201310146784A CN103212228B CN 103212228 B CN103212228 B CN 103212228B CN 201310146784 A CN201310146784 A CN 201310146784A CN 103212228 B CN103212228 B CN 103212228B
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- measuring cup
- convex tendon
- interior pipe
- pipe portion
- interval
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Abstract
The invention discloses a measuring cup for a vacuum filter. The measuring cup is characterized in that the upper part of the measuring cup is open; a plurality of spaced convex ribs which are radially distributed from the center to the outside are arranged at the inner bottom of the measuring cup, and a ring-shaped outer edge is arranged on the peripheries of the spaced convex ribs, so that a plurality of fan-shaped sunk regions are formed at the bottom of the measuring cup; a plurality of diversion convex ribs are arranged on the outer arc sides of the fan-shaped sunk regions; long and short diversion convex ribs are arranged at intervals; an overflow hole and a salient point A are arranged on each central angle side of the fan-shaped sunk regions; the salient point A is arranged on the inner side of the overflow hole; a membrane is hermetically fit with the inner bottom of the measuring cup and covers the ring-shaped outer edge; and ring-shaped bosses protruding downward are arranged at the outer bottom of the measuring cup. The measuring cup increases the effective filtration area of the membrane, improves the filtration efficiency and the membrane utilization rate, and avoids the membrane damage.
Description
Technical field
The present invention relates to a kind of measuring cup for vacuum filter.
Background technology
When carrying out Biochemistry Experiment, usually to filter mixed solution, now just needing to use a kind of nuclepore membrane filter.Nuclepore membrane filter generally comprises cup and is positioned at the receiving flask of its underpart, between the two every one deck micropore filtering film.After Experimental Flowing Object is poured into cup, filtered by micropore filtering film, fine solid particle wherein and bacterium and isolated, solution instillation receiving flask after filter.In order to raise the efficiency, point of attachment between upper cup and receiving flask is provided with the connector with aspirating hole, after can being connected to aspirating hole by the vaccum-pumping equipment of peripheral hardware, receiving flask is bled, make to form negative pressure in receiving flask, accelerate the speed of filtrate by micropore filtering film, so this nuclepore membrane filter is also called vacuum type filter.
Publication number be CN2095709U patent document discloses a kind of millipore filter, be mainly used in the monitoring analysis of the water quality such as ocean, rivers and lakes, this filter is made up of vacuum cylindrical shell, measuring cup, both support subiculum by measuring cup and are tightly connected, and filter membrane, porous plate to be pressed support between subiculum in measuring cup and measuring cup by inverted binding nut.Limit by structure, the filter membrane Area comparison in above-mentioned filter is little, and filter efficiency is low, is not suitable for the large quantity of fluid of fast filtering.Publication number be CN201894879U patent document discloses a kind of disposable nuclepore membrane filter, comprise opened upper end, bottom gets through and the upper cup closed with miillpore filter and the receiving flask being positioned at its underpart, with being provided with connector that have aspirating hole, that upper cup and receiving flask are linked up between described upper cup and receiving flask, described receiving flask is polystyrene component.This patent improves the vacuum negative pressure resistant intensity of bottle by the material changing receiving flask, and does not improve filtration, still there is the problem that effective filtration area is little, filter efficiency is low of filter membrane.
For this reason, inventor has devised a kind of disposal vacuum filter, improve filtration, increase the effective filtration area of filter membrane, improve filter efficiency.The present invention relates to measuring cup wherein.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of measuring cup for vacuum filter, improving filtration, increase the effective filtration area of filter membrane, improve filter efficiency.
To achieve the above object, present invention employs following technical scheme:
A kind of measuring cup for vacuum filter, described measuring cup opened upper end, the inner bottom part of measuring cup is provided with many interval convex tendons of the outside radial distribution in center, the periphery of interval convex tendon is outer circular edge, multiple fan-shaped sunk area is formed like this bottom measuring cup, multiple water conservancy diversion convex tendon is provided with in the external arc side in sector-shaped depressions region, multiple water conservancy diversion convex tendon length interval is arranged, a flowing hole and a salient point A is provided with in the central angle side in sector-shaped depressions region, salient point A is positioned at the inner side of flowing hole, filter membrane sealing paste is combined in the inner bottom part of measuring cup and covers outer circular edge, the outer bottom of measuring cup is provided with the annular boss to lower convexity, wherein, the height of projection of water conservancy diversion convex tendon, interval convex tendon and outer circular edge is 0.5 ~ 1.5mm, and the width of water conservancy diversion convex tendon and interval convex tendon is 1 ~ 2mm, and the spacing between adjacent water conservancy diversion convex tendon and interval convex tendon is not more than 8mm, and the diameter of flowing hole is 3 ~ 6mm.
As preferably, each flowing hole bottom described measuring cup is along same circle distribution, and this circle diameter is greater than the pore aperture in interior pipe portion.
Upper cover is stamped above described measuring cup.
The present invention, owing to have employed above technical scheme, improves filtration, increases the effective filtration area of filter membrane, improve filter efficiency and filter membrane utilization rate, avoid filter membrane breakage.Especially be applicable to high capacity filter, for 1000ml capacity, compared to prior art, filter efficiency improves nearly one times.
Accompanying drawing explanation
Fig. 1 is the outline drawing (containing receiving flask) of filter of the present invention;
Fig. 2 is the structural representation (not containing receiving flask) of filter of the present invention;
Fig. 3 is the top view (without filter membrane) of Fig. 2;
Fig. 4 is the structural representation of connector of the present invention;
Fig. 5 is the upward view of Fig. 4;
Fig. 6 is the top view of Fig. 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
Embodiment 1:
A kind of disposal vacuum filter as shown in Figure 1, comprise measuring cup 1 and the receiving flask 3 being positioned at its underpart, described measuring cup 1 is connected with the connector 2 with aspirating hole with between receiving flask 3.
As shown in Figure 2 and Figure 3, described measuring cup 1 opened upper end, the inner bottom part of measuring cup 1 is provided with many interval convex tendons 12 of the outside radial distribution in center, the periphery of interval convex tendon 12 is outer circular edge 13, multiple fan-shaped sunk area 18 is formed like this bottom measuring cup 1, multiple water conservancy diversion convex tendon 14,15 is provided with in the external arc side in sector-shaped depressions region 18, multiple water conservancy diversion convex tendon 14,15 length interval is arranged, be provided with a flowing hole 16 and a salient point A17 in the central angle side in sector-shaped depressions region 18, salient point A17 is positioned at the inner side of flowing hole 16; Filter membrane 4 sealing paste is combined in the inner bottom part of measuring cup 1 and covers outer circular edge 13; The outer bottom of measuring cup 1 is provided with the annular boss 11 to lower convexity.Measuring cup 1 is stamped upper cover (figure does not draw) above.
As shown in Fig. 4, Fig. 5, Fig. 6, described connector 2 comprises the top plate portion 21 of integrated injection molding, interior pipe portion 23 and outer connecting cylinder portion 22; Top plate portion 21 upper surface is formed with annular wall 211, and form circular depressed at the upper surface of top plate portion 21 like this, the bottom surrounding high central of this circular depressed is low and be evenly distributed with multiple salient point B212, and annular wall 211 seals with the annular boss 11 of measuring cup 1 and fits; Interior pipe portion 23 is located at the central authorities below top plate portion 21, top plate portion 21 and the pore correspondence position in interior pipe portion 23 form multiple strip gap 214 by the shaping multiple support bar 213 in interval, the outer peripheral face in interior pipe portion 23 is uniformly distributed multiple flow guide bar 231, downward-extension on flow guide bar 231; Outer connecting cylinder portion 22 is located at below top plate portion 21 and the outside in interior pipe portion 23, the diameter of its epimere is less than the diameter of hypomere, by transition shoulder 221 transition between two sections, hypomere is connected with receiving flask 3 by screw thread, path section is provided with suction interface 24,, higher than the lower nozzle in interior pipe portion 23, fit with transition shoulder 221 outside the flow guide bar 231 that annular gasket 5 is enclosed within interior pipe portion 23 in the position of suction interface 24.
In the present embodiment, receiving flask 3 is that polystyrene material makes, and receiving flask is designed to the slightly tapered shape of centripetal depression at the bottom of bigger, the bottle in bottom, and be the conical flask that tapering is less than 3 degree, indent in the middle part of receiving flask body, to central concave at the bottom of bottle, body is provided with scale.The type of filter membrane can be MCE, nylon, PVDF and PES, and micropore size scope is 0.1 μm, 0.22 μm, 0.45 μm.
During use, receiving flask 3 is threaded in below connector 2, sealing on the transition shoulder 221 that annular gasket 221 is pushed against connector 2 by the bottleneck of receiving flask 3, the suction interface 24 of connector 2 connects vacuum extractor, liquid to be filtered is put in upper cup 1, liquid enters in each sector-shaped depressions region 18 after filter membrane 4 micro porous filtration, flow in the cavity that formed between the outer bottom of measuring cup 1 and the top plate portion 21 of connector 2 through each water conservancy diversion convex tendon 14,15 water conservancy diversion through flowing hole 16, top plate portion 21 converges also flowed in receiving flask 3 by strip gap 214 and interior pipe portion 23.
The utility model has higher filter membrane utilization rate, increases membrane filtration area, improves filter efficiency.Interval convex tendon, arranging of sector-shaped depressions region and water conservancy diversion convex tendon can effectively support filter membrane and avoid breakage; As preferably, be provided with salient point A, choked flow, shunting action can be played at the tip, the center of circle of sector region like this, make liquid flow into flowing hole smoothly, avoid filter membrane center to arch upward breakage; As preferably, the height of projection of water conservancy diversion convex tendon, interval convex tendon and outer circular edge is 0.5 ~ 1.5mm, the width of water conservancy diversion convex tendon and interval convex tendon is 1 ~ 2mm, spacing between adjacent water conservancy diversion convex tendon and interval convex tendon is not more than 8mm, the diameter of flowing hole is 3 ~ 6mm, and filter membrane is not fragile simultaneously to have good filter efficiency like this.The setting arranging cavity and salient point B and strip gap 214 above the top plate portion of connector not only can play secondary filter and cushioning effect, and can improve filter efficiency.As preferably, each flowing hole 16 bottom described measuring cup 1 is along same circle distribution, and this circle diameter is greater than the pore aperture (i.e. the length in strip gap 214) in interior pipe portion 23, has good cake filtration effect like this.Flow guide bar 231 being set in periphery, interior pipe portion and annular gasket 5 carries out water conservancy diversion to vacuumizing air-flow, reducing its adverse effect to filter membrane, improving filter efficiency.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. a vacuum filter, comprises measuring cup (1) and is positioned at the receiving flask (3) of its underpart, be connected between described measuring cup (1) with receiving flask (3) with the connector (2) with aspirating hole, it is characterized in that, described measuring cup (1) opened upper end, the inner bottom part of measuring cup (1) is provided with many interval convex tendons (12) of the outside radial distribution in center, the periphery of interval convex tendon (12) is outer circular edge (13), multiple fan-shaped sunk area (18) is formed like this in measuring cup (1) bottom, multiple water conservancy diversion convex tendon (14 is provided with in the external arc side of sector-shaped depressions region (18), 15), multiple water conservancy diversion convex tendon (14, 15) length interval is arranged, a flowing hole (16) and a salient point A (17) is provided with in the central angle side of sector-shaped depressions region (18), salient point A (17) is positioned at the inner side of flowing hole (16), filter membrane (4) sealing paste is combined in the inner bottom part of measuring cup (1) and covers outer circular edge (13), the outer bottom of measuring cup (1) is provided with the annular boss (11) to lower convexity, wherein, described water conservancy diversion convex tendon (14, 15), the height of projection of interval convex tendon (12) and outer circular edge (13) is 0.5 ~ 1.5mm, water conservancy diversion convex tendon (14, 15) and the width of interval convex tendon (12) be 1 ~ 2mm, adjacent water conservancy diversion convex tendon (14, 15) spacing and between interval convex tendon (12) is not more than 8mm, the diameter of flowing hole (16) is 3 ~ 6mm, described connector (2) comprises the top plate portion (21) of integrated injection molding, interior pipe portion (23) and outer connecting cylinder portion (22), top plate portion (21) upper surface is formed with annular wall (211), circular depressed is formed like this at the upper surface of top plate portion (21), the bottom surrounding high central of this circular depressed is low and be evenly distributed with multiple salient point B (212), and annular wall (211) seals with the annular boss (11) of measuring cup (1) and fits, interior pipe portion (23) is located at the central authorities below top plate portion (21), top plate portion (21) and the pore correspondence position in interior pipe portion (23) by the shaping multiple support bar in interval (213) thus form multiple strip gap (214), the outer peripheral face of interior pipe portion (23) is uniformly distributed multiple flow guide bar (231), the upper downward-extension of flow guide bar (231), outer connecting cylinder portion (22) is located at below top plate portion (21) and the outside of interior pipe portion (23), the diameter of its epimere is less than the diameter of hypomere, by transition shoulder (221) transition between two sections, hypomere is connected with receiving flask (3) by screw thread, path section is provided with suction interface (24), the position of suction interface (24) is higher than the lower nozzle of interior pipe portion (23), and annular gasket (5) is enclosed within flow guide bar (231) outside of interior pipe portion (23) and fits with transition shoulder (221).
2. a kind of vacuum filter according to claim 1, is characterized in that, each flowing hole (16) of described measuring cup (1) bottom is along same circle distribution, and this circle diameter is greater than the pore aperture of interior pipe portion (23).
3. a kind of vacuum filter according to claim 1, is characterized in that, described measuring cup (1) is stamped upper cover above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146784.4A CN103212228B (en) | 2013-04-24 | 2013-04-24 | Vacuum filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146784.4A CN103212228B (en) | 2013-04-24 | 2013-04-24 | Vacuum filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103212228A CN103212228A (en) | 2013-07-24 |
| CN103212228B true CN103212228B (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310146784.4A Active CN103212228B (en) | 2013-04-24 | 2013-04-24 | Vacuum filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103212228B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039790A (en) * | 2016-09-12 | 2016-10-26 | 云南锡业锡化学品有限公司 | Annular filtering device for dibutyltin oxide production |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3295686A (en) * | 1965-05-20 | 1967-01-03 | Rockridge Lab | Filter unit |
| US3374897A (en) * | 1966-02-01 | 1968-03-26 | Bunn O Matic Corp | One-piece funnel with integral ribs for holding disposable coffee carrying filter |
| US4123228A (en) * | 1977-03-21 | 1978-10-31 | Plaston Ag, Kunststoffwerke Hans Frei & Sohne | Filters for liquids |
| EP0321064A1 (en) * | 1987-12-10 | 1989-06-21 | Costar Corporation | Bottle filter |
| CN2262451Y (en) * | 1996-12-25 | 1997-09-17 | 北京曼博瑞技术有限责任公司 | High-precision filtering funnel |
| US7661538B1 (en) * | 2001-05-31 | 2010-02-16 | Roush Life Science, LLC | Disposable vacuum filtration funnel with integral prefilter |
| CN101925396A (en) * | 2008-01-21 | 2010-12-22 | 富士胶片株式会社 | Porous filter cartridge |
| CN203196415U (en) * | 2013-04-24 | 2013-09-18 | 浙江硕华医用塑料有限公司 | Measuring cup for vacuum filter |
-
2013
- 2013-04-24 CN CN201310146784.4A patent/CN103212228B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3295686A (en) * | 1965-05-20 | 1967-01-03 | Rockridge Lab | Filter unit |
| US3374897A (en) * | 1966-02-01 | 1968-03-26 | Bunn O Matic Corp | One-piece funnel with integral ribs for holding disposable coffee carrying filter |
| US4123228A (en) * | 1977-03-21 | 1978-10-31 | Plaston Ag, Kunststoffwerke Hans Frei & Sohne | Filters for liquids |
| EP0321064A1 (en) * | 1987-12-10 | 1989-06-21 | Costar Corporation | Bottle filter |
| CN2262451Y (en) * | 1996-12-25 | 1997-09-17 | 北京曼博瑞技术有限责任公司 | High-precision filtering funnel |
| US7661538B1 (en) * | 2001-05-31 | 2010-02-16 | Roush Life Science, LLC | Disposable vacuum filtration funnel with integral prefilter |
| CN101925396A (en) * | 2008-01-21 | 2010-12-22 | 富士胶片株式会社 | Porous filter cartridge |
| CN203196415U (en) * | 2013-04-24 | 2013-09-18 | 浙江硕华医用塑料有限公司 | Measuring cup for vacuum filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103212228A (en) | 2013-07-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313220 Deqing County Province, Huzhou City, the town of bell hill road, No., No. 148 Patentee after: Zhejiang Sorfa Life Science Research Co., Ltd. Address before: 313220 Deqing County Province, Huzhou City, the town of bell hill road, No., No. 148 Patentee before: Zhejiang Sorfa Medical Plastic Co.,Ltd. |