CN2858040Y - Thin film filter - Google Patents
Thin film filter Download PDFInfo
- Publication number
- CN2858040Y CN2858040Y CN 200520104286 CN200520104286U CN2858040Y CN 2858040 Y CN2858040 Y CN 2858040Y CN 200520104286 CN200520104286 CN 200520104286 CN 200520104286 U CN200520104286 U CN 200520104286U CN 2858040 Y CN2858040 Y CN 2858040Y
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- CN
- China
- Prior art keywords
- filter
- filter membrane
- membrane
- tank body
- gripper shoe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Separation Using Semi-Permeable Membranes (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility provides a thin film filter comprising a pot and a pot base and a fixing-linking device between them, and the pot is fixed by being pressed on the pot base. The pot is equipped with a liquid inlet and gas outlet, and further includes filter film and support plate thereof which is fixed on the pot base, and the filter film is laid on the support plate; and a sealing ring has a dual-ring sealing line structure at the part where the sealing ring contacts with the fixed structure of the pot, and the upside of the sealing ring constitutes a fixing structure with the pot. The filter film can be integrally taken out by the fixing structure of the pot on the sealing ring and the dual-ring sealing line contacting with the filter film, in addition, the film unload plate of the film support plate; sealed well. Together with a clip slot and a matched clip block respectively extending out in relation to pot and the pot base set in longitudinal direction, the install flatness of the filter film can be ensured. And adding an air filter to the exhaust port can prevent the bacteria in air coming into the pot, thereby ensuring that the medicine detection result employing the film filter is correct.
Description
Technical field
The utility model provides a kind of filter, especially a kind ofly is used for the membrane filter that drug inspection uses.
Background technology
Regulation according to China's pharmacopeia, the medicine that the pharmaceutical factory produces is before dispatching from the factory, need that medicine is carried out Micro biological Tests and determine whether it is polluted by malignant bacteria, also needs to place feminine gender in the detection, positive reference substance contrasts to determine the accuracy of check in the process of producing.In checkout procedure, tested medicine also can be the various formulations of Chinese medicine, externally applied drug etc.Be to have adopted a kind of device that is called membrane filter in the process of tested drug inspection, at first the tested medicine dilution with ormal weight is certain density solution, with peristaltic pump as power, above-mentioned medicine to be checked is all clamp-oned in the device of this membrane filter, and all the filter membrane by 0.45 μ aperture is filtered; Polluted bacteria in the medicine to be checked can be blocked in above the film by this filter membrane, thereafter take this membrane filtration apparatus apart, take out filter membrane, be placed on the culture dish for its specific preparation, in 37 ℃ incubator, cultivate, according to what of bacterium colony on the culture dish, make check conclusion, and judge whether qualified can dispatching from the factory of tested medicine.Also can directly put into incubator and cultivate with this membrane filter as incubator.Carry out membrane filtration apparatus (if the non-removable said apparatus of this checked operation; It is known as filtering culturing dish, bacteria gathering device, collection bacterium device etc. again), as shown in Figure 1, it comprises a tank body 03 and the fangs 04 that is connected with the bottom of tank body, is provided with between tank body 03 and the fangs 04 and connects firmly device 07, and tank body 03 is pressed solidly on fangs 04.On tank body, be provided with liquid-inlet 031 and exhaust outlet 032, between tank body 03 and fangs 04, set firmly filter membrane component.
The structure of membrane filter of the prior art is seen Fig. 1, and filter membrane component comprises filter membrane 01, filter membrane gripper shoe 02 and sealing ring.Described filter membrane gripper shoe 02 is the porous plate that the filtration cross sectional shape of a profile and tank body 03 and fangs 04 is complementary, filter membrane 01 is located on this filter membrane gripper shoe 02, respectively be provided with on filter membrane 01 upper surface and between filter membrane 01 and the filter membrane gripper shoe on the upper surface that a sealing ring 05 and 06, two sealing ring of sealing ring be pressed on the filter membrane gripper shoe respectively and lower surface on.Through connecting firmly device 07, tank body 03 is connected firmly with fangs 04 be in the same place, oppress two sealing rings simultaneously, make between filter membrane and filter membrane gripper shoe and the tank body to seal.There are following defectives in existing membrane filter:
1, not easily separated between filter membrane and the filter membrane gripper shoe.
Existing membrane filter filter membrane is located on the multiaperture-type filter membrane gripper shoe, also is pressed with sealing ring on filter membrane.In the drug inspection process, high-temperature process be cultivated and wanted to the filter after filtering, after treatment, sealing ring and filter membrane above the filter membrane are combined closely, and are difficult to take off, and therefore, it is very difficult to take off filter membrane from gripper shoe.May take off complete filter membrane hardly.Add up cultivating the bacterium colony that forms on the filter membrane with regard to having influence in the check like this.
2, the sealing property between filter membrane component and tank body, the fangs is relatively poor.
This membrane filter is wanted pressure filtration in the bacteriological filtration process, existing filter membrane component and tank body, fangs are implemented sealing by filter membrane two sealing rings up and down that are placed in respectively, and the sealing structure is often leaked.Its main cause is because the sealing ring between pressure process middle and upper part tank body and the filter membrane component is very easy to displacement, causes poorly sealed.
3, existing membrane filter upper tank body and fangs press down in the fastening sealing in the effect that connects firmly device, what especially helixseal connected firmly structure connects firmly device rotation when connecting firmly, be prone between tank body and the fangs and relatively rotate, thus, under the effect of sealing ring, make the filter membrane of paving on the filter membrane gripper shoe wrinkling easily, influence is filtered and is cultivated and thereafter for the statistics of bacterial clump.
The device that connects firmly of the prior art is to be spirally connected by securing member and fangs, and extruding is simultaneously established and sealing ring above the filter membrane fixedly tank body and fangs and implement the filter sealing, is screwing when connecting firmly device, and upper sealing gasket is very easy to be shifted.This also is the existing poorly sealed reason of membrane filter.
4, the exhaust outlet of existing membrane filter is uncovered, and like this, if there is extraneous air to enter this filter in operating process, the bacterium that may exist in the air also can enter thereupon, like this, just may influence the accuracy of detection.
Summary of the invention
The purpose of this utility model is to improve deficiency of the prior art, provides a kind of sealing tight, is installing and filtering the membrane filter that all is difficult for leakage and the easy complete taking-up of filter membrane when exerting pressure.
Another purpose of the present utility model provides a kind of can not producing relative rotation between tank body and the fangs and guarantees the smooth membrane filter of filter membrane when rotatory sealing.
Another purpose of the utility model provides a kind ofly can guarantee that the bacterium in the surrounding air can not enter tank body, guarantees testing result membrane filter accurately.
The purpose of this utility model is achieved in that
The membrane filter that the utility model provides comprises tank body and the fangs that is connected with the bottom of tank body, is provided with between tank body and the fangs and connects firmly device, tank body is pressed solidly be connected on the fangs; On tank body, be provided with liquid-inlet and exhaust outlet, also be provided with filter membrane component, it comprises filter membrane and filter membrane gripper shoe, described filter membrane gripper shoe is the plate-shaped member with holes that the filtration cross sectional shape of a profile and tank body and fangs is complementary, be installed on the fangs, described filter membrane is laid on this filter membrane gripper shoe; Also comprise sealing ring in addition, described sealing ring makes and is sealed between described tank body, fangs and the filter membrane component; Described sealing ring not only contacts with described filter membrane and reaches sealing purpose, also and between tank body or the filter membrane gripper shoe constitute fixed structure simultaneously, the lower surface of described sealing ring contacts with described filter membrane, its upside also and constitute fixed structure between the tank body, the sealing fin that is provided with inside and outside twice evagination on described sealing ring and lower surface that described filter membrane contacts forms Crossed Circle potted line structure, and the lower surface of the described sealing of described sealing ring is pressed against on the described filter membrane.
Owing to form fixed structure between sealing ring of this membrane filter and the described tank body, and and the contact-making surface between the filter membrane is a Crossed Circle potted line structure, therefore, when filter or and after follow-up Bacteria Culture process finishes, turn on the described device that connects firmly, filter membrane will be attached on the sealing ring, can be relaxedly and rapidly takes off filter membrane is complete with tweezers.
The key factor of finishing this goal of the invention is that sealing ring and tank body are fixed, and the contact-making surface of sealing ring and filter membrane is a Crossed Circle potted line structure.
For fear of bonding tension between filter membrane and the filter membrane gripper shoe, make the filter membrane convenience, intactly take off, following structure can also be arranged:
Be provided with a through hole in the middle part of this filter membrane gripper shoe, on the upper surface of this filter membrane gripper shoe, be provided with some drainage groove and described intermediate throughholes links, also be provided with some lamina membranaceas that unload on the upper surface of this filter membrane gripper shoe and be embedded groove; Also be provided with and unload lamina membranacea, the described lamina membranacea that unloads comprises a membrane unloading part and a push rod that connects firmly with it, the described groove that is embedded that is provided with on the shape of described membrane unloading part and the described filter membrane gripper shoe is complementary, when described membrane unloading part was entrenched on this filter membrane gripper shoe, its upper surface was concordant with the filter membrane support plate upper surface; Described push rod is located in the through hole on the described filter membrane gripper shoe, and described filter membrane is laid on and is embedded with on the described described filter membrane support plate upper surface of unloading lamina membranacea.
In this membrane filter, after collection bacterium or Bacteria Culture are thereafter finished during skinning, if filter membrane is adjacent on the filter membrane support plate, then as long as below filter membrane component, upwards promote to unload the push rod of lamina membranacea, the membrane unloading part that is embedded in filter membrane gripper shoe upper groove is promptly liftable, the filter membrane of laying is thereon held up, can make filter membrane intactly be risen.
Can not produce relative rotation between tank body and the fangs when realizing rotatory sealing of the present utility model and guarantee the smooth purpose of filter membrane, the described tank body in this membrane filter and the relative position of described fangs are provided with vertical draw-in groove and fixture block, when it combined, described fixture block was plugged in the described draw-in groove.The described device that connects firmly is a screw element that is spirally connected with fangs.When screwing when connecting firmly device, tank body can only be to be pressed on the fangs straight down along draw-in groove, and can not make the relative rotation of generation between tank body and the fangs, so, can not make filter membrane wrinkling.
A fixing optimal technical scheme of described sealing ring and described fangs is: the bottom surface of described tank body is provided with an annular groove, and the top of described sealing ring is the holding division that is complementary with described annular groove end surface shape.
By the described device that connects firmly described tank body and fangs are tightened together, the sealing portion of described sealing ring can will be closed between tank body and the filter membrane component closely.Because sealing ring and tank body fix fixing, be difficult for making sealing ring to be shifted in the device process screwing to connect firmly, similarly, sealing ring can displacement yet in pressure filtration, and therefore, the sealing structure is very tight.
By the described device that connects firmly described tank body and fangs are tightened together, two surfaces up and down of described sealing ring, promptly two of this annular groove cell walls can will seal between tank body and fangs and the filter membrane component closely on it.Because sealing ring is fastened on the filter membrane component fixing, be difficult for making the sealing ring displacement in the device process screwing to connect firmly, similarly, sealing ring can displacement yet in pressure filtration, and therefore, the sealing structure is very tight.In addition, this kind hermetically-sealed construction is more reliable, and structure is also compact more.
In order to realize of the present utility modelly not making airborne bacterium enter purpose in the tank body, on the adapter mouth on the described uncovered exhaust outlet, be arranged with to sealing an air filter.
The membrane filter that the utility model provides, by on the sealing ring and fixed structure tank body with lower surface that filter membrane contacts on the Crossed Circle potted line or adding the lamina membranacea that unloads that on the filter membrane gripper shoe, is provided with, can take out complete filter membrane easily; And sealing is tight.Add the draw-in groove and the fixture block that on the corresponding vertical direction that goes out to be provided with of tank body, are complementary, can guarantee the planarization that filter membrane is installed with fangs.And on exhaust outlet, set up air filter, and can guarantee that airborne bacterium can't enter tank body, use this membrane filter accurate to the testing result of medicine.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of membrane filter of the prior art;
The structural representation of the membrane filter that Fig. 2 provides for the utility model;
Fig. 3 is the structural representation of sealing ring;
Fig. 4 is the plan structure schematic diagram that is combined with the filter membrane gripper shoe of unloading lamina membranacea;
Fig. 5 is the structural representation of membrane unloading part;
The specific embodiment
Shown in Fig. 2,3, the membrane filter that the utility model provides comprises tank body 1 and the fangs 2 that is connected with the bottom of tank body, be provided with between tank body 1 and the fangs 2 and connect firmly device 3, tank body 1 is pressed solidly on fangs 2, it is a nut piece 3, be provided with external screw thread on fangs, this nut piece that is spirally connected is pressed on the fangs tank body.Also be provided with filter membrane component 4, it comprises filter membrane 41, filter membrane gripper shoe 42, unloads lamina membranacea 5 and sealing ring 44, and sealing ring 44 makes and sealed between tank body 1, fangs 2 and the filter membrane component; Filter membrane gripper shoe 42 is the plate that the filtration cross sectional shape of a profile and tank body 1 and fangs 2 is complementary, the upper surface of plate is provided with some concentrically ringed concavo-convex ribs, be provided with a through hole 43 in the middle part of this filter membrane gripper shoe 42, on the upper surface of this filter membrane gripper shoe, be provided with some groove (see figure 4)s.
Shown in Figure 4 and 5, unload lamina membranacea 5 and have a push rod 51, it is located in the through hole 43 on the filter membrane gripper shoe 42, set firmly membrane unloading part 52 in the upper end of this push rod 51, the groove that is provided with on its shape and the filter membrane gripper shoe 42 is complementary, when membrane unloading part 52 was entrenched on this filter membrane gripper shoe 42, its upper surface was concordant with filter membrane gripper shoe 42 upper surfaces; Filter membrane 41 is laid on to have on filter membrane gripper shoe 42 upper surfaces that unload lamina membranacea 52.
As shown in Figure 2, the bottom surface of tank body 1 is provided with an annular groove 11, the cross sectional shape of sealing ring 44 is: top is the holding division 441 that is complementary with annular groove 11 end surface shape, lower seal portion is a Crossed Circle potted line 442, by holding division 441 sealing ring 44 is fixed on the bottom surface of tank body 1, the lower surface of the sealing 442 of sealing ring 44 is pressed against on the sealing surface of fangs 2.
Shown in Fig. 2,5, accordingly, the madial wall of fangs 2 is provided with vertical groove 21, and correspondingly, the outer side surface of tank body 1 is provided with vertical projection 12, and it is plugged in together, as shown in Figure 1.
As shown in Figure 1, on the adapter mouth 131 on the uncovered exhaust outlet 13 of tank body 1, be arranged with to sealing an air filter 6.
Can between the import of the adapter mouth of exhaust outlet and air filter, connect a flexible pipe, on this flexible pipe, be provided with one by clamp.Should can easily the exhaust outlet on the tank body be ended by clamp on the folder.
Claims (6)
1, a kind of membrane filter is characterized in that: comprise tank body and the fangs that is connected with the bottom of tank body, be provided with between tank body and the fangs and connect firmly device, tank body is pressed solidly on fangs; On tank body, be provided with liquid-inlet and exhaust outlet, also be provided with filter membrane component, it comprises filter membrane and filter membrane gripper shoe, described filter membrane gripper shoe is the plate-shaped member with holes that the filtration cross sectional shape of a profile and tank body and fangs is complementary, be installed on the fangs, described filter membrane is laid on this filter membrane gripper shoe; Also comprise sealing ring in addition, the lower surface of described sealing ring contacts with described filter membrane, its upside also and constitute fixed structure between the tank body, the sealing fin that is provided with inside and outside twice evagination on described sealing ring and lower surface that described filter membrane contacts forms Crossed Circle potted line structure, and the lower surface of the described sealing of described sealing ring is pressed against on the described filter membrane.
2, membrane filter according to claim 1, it is characterized in that: be provided with a through hole in the middle part of this filter membrane gripper shoe, on the upper surface of this filter membrane gripper shoe, be provided with some drainage groove and described intermediate throughholes links, also be provided with some lamina membranaceas that unload on the upper surface of this filter membrane gripper shoe and be embedded groove; Also be provided with and unload lamina membranacea, the described lamina membranacea that unloads comprises a membrane unloading part and a push rod that connects firmly with it, the described groove that is embedded that is provided with on the shape of described membrane unloading part and the described filter membrane gripper shoe is complementary, when described membrane unloading part was entrenched on this filter membrane gripper shoe, its upper surface was concordant with the filter membrane support plate upper surface; Described push rod is located in the through hole on the described filter membrane gripper shoe, and described filter membrane is laid on and is embedded with on the described described filter membrane support plate upper surface of unloading lamina membranacea.
3, membrane filter according to claim 1 and 2 is characterized in that: the relative position of described tank body and described fangs is provided with vertical draw-in groove and fixture block, and when it combined, described fixture block was plugged in the described draw-in groove.The described device that connects firmly is a screw element that is spirally connected with fangs.
4, membrane filter according to claim 1 and 2 is characterized in that: be arranged with to sealing an air filter on the adapter mouth on the described uncovered exhaust outlet.
5, membrane filter according to claim 4 is characterized in that: connect a flexible pipe between the import of the adapter mouth of described exhaust outlet and described air filter.
6, membrane filter according to claim 5 is characterized in that: be provided with one by clamp on this flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520104286 CN2858040Y (en) | 2005-08-23 | 2005-08-23 | Thin film filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520104286 CN2858040Y (en) | 2005-08-23 | 2005-08-23 | Thin film filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2858040Y true CN2858040Y (en) | 2007-01-17 |
Family
ID=37610899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520104286 Expired - Fee Related CN2858040Y (en) | 2005-08-23 | 2005-08-23 | Thin film filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2858040Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602776A (en) * | 2012-06-20 | 2015-05-06 | 原子能与替代能源委员会 | Filtration assembly comprising a filter and a filter support and associated method for the collection and analysis of nanoparticles |
| CN107349648A (en) * | 2017-08-25 | 2017-11-17 | 广东省生物工程研究所（广州甘蔗糖业研究所） | A kind of Special filtering membrane filter for the detection of liquid glucose colour |
| CN108744988A (en) * | 2018-08-15 | 2018-11-06 | 河南省医疗器械检验所 | Air filtering device for transfusion/film liquid bacterial interception capacity experimental test component |
| CN112817030A (en) * | 2020-12-29 | 2021-05-18 | 中国原子能科学研究院 | Measuring device |
-
2005
- 2005-08-23 CN CN 200520104286 patent/CN2858040Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602776A (en) * | 2012-06-20 | 2015-05-06 | 原子能与替代能源委员会 | Filtration assembly comprising a filter and a filter support and associated method for the collection and analysis of nanoparticles |
| CN104602776B (en) * | 2012-06-20 | 2017-10-03 | 原子能与替代能源委员会 | The collection of filter assemblies and nano particle comprising filter and filter holder and analysis correlation technique |
| CN107349648A (en) * | 2017-08-25 | 2017-11-17 | 广东省生物工程研究所（广州甘蔗糖业研究所） | A kind of Special filtering membrane filter for the detection of liquid glucose colour |
| CN108744988A (en) * | 2018-08-15 | 2018-11-06 | 河南省医疗器械检验所 | Air filtering device for transfusion/film liquid bacterial interception capacity experimental test component |
| CN108744988B (en) * | 2018-08-15 | 2023-10-24 | 河南省药品医疗器械检验院(河南省疫苗批签中心) | Air filter/membrane liquid bacteria interception capability test module for transfusion |
| CN112817030A (en) * | 2020-12-29 | 2021-05-18 | 中国原子能科学研究院 | Measuring device |
| CN112817030B (en) * | 2020-12-29 | 2024-05-14 | 中国原子能科学研究院 | Measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Niuniu Gene Technology Co., Ltd. Assignor: Niu Gang|Hu Changqin Contract fulfillment period: 2009.12.25 to 2019.12.25 Contract record no.: 2009110000305 Denomination of utility model: Thin film filter Granted publication date: 20070117 License type: Exclusive license Record date: 20091230 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.12.25 TO 2019.12.25; CHANGE OF CONTRACT Name of requester: BEIJING NIUNIU GENENTECH CO., LTD. Effective date: 20091230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070117 Termination date: 20140823 |
|
| EXPY | Termination of patent right or utility model |