CN212914748U - a filter device - Google Patents
a filter device Download PDFInfo
- Publication number
- CN212914748U CN212914748U CN202021625521.3U CN202021625521U CN212914748U CN 212914748 U CN212914748 U CN 212914748U CN 202021625521 U CN202021625521 U CN 202021625521U CN 212914748 U CN212914748 U CN 212914748U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- suction filtration
- sample
- filter screen
- gasket
- Prior art date
- 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
Links
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000000967 suction filtration Methods 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 6
- 239000003570 air Substances 0.000 description 10
- 238000000605 extraction Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 238000012864 cross contamination Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004993 emission spectroscopy Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
本实用新型公开了一种抽滤装置，其包括滤网、样品缸、分流缸、垫片、封口垫、收集容器、滤膜，滤网活动设置在样品缸内，样品缸底部与分流缸顶部螺纹连接，分流缸顶部开口处设置有漏斗结构，分流缸一侧开有抽气口，抽气口与抽气泵连接，分流缸底部开有出液口，2个垫片设置在漏斗结构上，垫片为环形片，滤膜夹在2个垫片之间并位于漏斗结构上方，分流缸的出液口通过封口垫设置在收集容器内，封口垫与收集容器口相互配合；本装置实现样品两级过滤，提高抽滤效率，减少滤膜更换次数，降低使用成本，避免了锥形橡胶塞抽滤后打不开的情况，提高了操作效率。
The utility model discloses a suction filtration device, which comprises a filter screen, a sample cylinder, a shunt cylinder, a gasket, a sealing pad, a collection container and a filter membrane. The filter screen is movably arranged in the sample cylinder, the bottom of the sample cylinder and the top of the shunt cylinder. Threaded connection, a funnel structure is arranged at the top opening of the shunt cylinder, an air suction port is opened on one side of the shunt cylinder, the air suction port is connected with the air pump, and a liquid outlet is opened at the bottom of the shunt cylinder, and two gaskets are arranged on the funnel structure, the gasket It is a ring-shaped piece, the filter membrane is sandwiched between two gaskets and is located above the funnel structure, the liquid outlet of the shunt cylinder is set in the collection container through the sealing pad, and the sealing pad and the mouth of the collection container cooperate with each other; this device realizes the two-stage sample Filtration, improve the suction filtration efficiency, reduce the number of filter membrane replacements, reduce the use cost, avoid the situation that the conical rubber plug cannot be opened after suction filtration, and improve the operation efficiency.
Description
Technical Field
The utility model belongs to laboratory, scene and open-air sampling device, concretely relates to novel suction filtration device.
Background
Suction filtration is a common sample pretreatment means in the monitoring and analysis process, and aims to purify liquid and collect filtrate or collect suspended matters and the like in waterAnd (3) fine particles. Precipitation of cations (Na) from ambient air+、NH4 +、k+、Mg2+、Ca2+) The specifications of the measurement ion chromatography (HJ 1005-2018), the instruction book of the task monitoring task operation of the national monitoring network for the quality of the surface water environment (trial implementation), and the measurement inductively coupled plasma emission spectrometry (HJ 776-2015) for 32 elements in water quality require that when soluble elements are measured, the collected water sample is filtered by a 0.45 mu m filter membrane and then is measured. In the existing suction filtration device in the market, a filter membrane is easily blocked by large-particle substances in a water body in the use process, the filter membrane needs to be frequently replaced, the suction filtration efficiency is reduced, and the use cost is increased; the suction filtration device in the current market needs to be provided with a liquid collecting bottle independently, is inconvenient to carry in field operation, can be used only by cleaning the liquid collecting bottle for many times when samples at different point positions are extracted, reduces the operation efficiency, and is easy to cause cross contamination of the samples; the liquid collecting bottle of the suction filtration device in the current market is provided with a conical rubber plug or a glass plug, and the phenomenon that the rubber plug or the glass plug is difficult to open is easy to occur after suction filtration.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a suction filtration device has realized the second grade filtration of sample, is difficult for blockking up, and portable need not dispose solitary collecting bottle, applicable in the filtrating collecting container of different bores, has avoided the cross contamination between the different samples.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model discloses suction filtration device includes the filter screen, the sample jar, the reposition of redundant personnel jar, the gasket, seal the pad, the collection container, the filter membrane, the filter screen activity sets up in the sample jar, sample bottom of the cylinder portion and reposition of redundant personnel jar top threaded connection, reposition of redundant personnel jar open-top department is provided with the funnel structure, it has the extraction opening to open reposition of redundant personnel jar one side, the extraction opening is connected with the aspiration pump, it has the liquid outlet to open reposition of redundant personnel bottom of the cylinder portion, 2 individual gasket settings are structural at the funnel, the gasket is the annular piece, the filter membrane presss from both sides between 2 individual gaskets and is located funnel structure top, the liquid outlet of reposition of redundant personnel jar sets up in the collection container.
The filter screen top edge is provided with the stationary blade for set up the filter screen top on the sample jar.
The gasket is a stainless steel gasket, and the filter membrane is various types of filter membranes which are commercially available in the conventional way and used for filtering.
The sealing pad is a cylindrical rubber pad, and the diameter of the sealing pad is larger than that of an opening at the upper part of the collecting container.
The bottom of the sample cylinder is provided with an external thread, the top opening of the flow distribution cylinder is provided with an internal thread and is positioned above the funnel structure, and the bottom of the sample cylinder is in threaded connection with the top of the flow distribution cylinder.
And a rubber sealing ring is arranged on the gasket.
During the use, place the filter membrane in required aperture between 2 gaskets, be connected the back with the reposition of redundant personnel jar with the sample jar, put the filter screen in the sample jar, then put the pad of sealing on the reposition of redundant personnel jar liquid outlet on the collection container mouth, be connected the extraction opening and the aspiration pump on the reposition of redundant personnel jar, open the aspiration pump, compress tightly the pad of sealing with the hand, make the pad of sealing closely laminate with the collection container mouth, then will treat that the liquid of suction filtration adds from the filter screen, under the aspiration pump effect, liquid passes through the filter screen and gets into the sample jar, then get into the funnel structure through the filter membrane, the rethread liquid outlet gets into in the collection container, accomplish the suction filtration.
The utility model has the advantages that:
1. the air suction port is arranged on the side surface of the flow dividing cylinder, so that the size of the suction filtration device is reduced, and the suction filtration device is convenient to carry and carry in field operation;
2. the sealing pad is suitable for collecting containers with different calibers, and a liquid collecting bottle with a fixed calibre does not need to be independently prepared;
3. the secondary filtration of the sample is realized, the filter membrane is not easy to block, and the suction filtration efficiency is improved; the portable liquid collecting device is convenient to carry, does not need to be provided with a separate liquid collecting bottle, can be suitable for collecting containers with different calibers, and avoids cross contamination among different samples; the filter membrane replacement frequency is reduced, the use cost is reduced, the condition that the conical rubber plug cannot be opened after suction filtration is avoided, and the operation efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts;
FIG. 1 is a schematic structural diagram of the device of the present invention;
FIG. 2 is a schematic view of a part of the structure of the device of the present invention;
FIG. 3 is a schematic view of a part of the structure of the flow dividing cylinder of the present invention;
in the figure: 1-filtering with a filter screen; 2-sample cylinder; 3-a flow-dividing cylinder; 4-a gasket; 5-an air extraction opening; 6-sealing pad; 7-a liquid outlet; 8-a collection container; 9-funnel structure; 10-a filter membrane; 11-a fixing sheet; 12-internal thread.
Detailed Description
The invention is explained in more detail below with reference to the figures and examples, without limiting the scope of the invention to the details.
Example 1: as shown in fig. 1-3, the suction filtration device comprises a filter screen 1, a sample cylinder 2, a diversion cylinder 3, a gasket 4, a sealing pad 6, a collection container 8 and a filter membrane 10, wherein the filter screen 1 is movably arranged in the sample cylinder 2 through a fixing piece 11, the fixing piece 11 is arranged at the top of the sample cylinder 2, the bottom of the sample cylinder 2 is provided with an external thread, an opening at the top of the diversion cylinder 3 is provided with an internal thread 12, the bottom of the sample cylinder 2 is in threaded connection with the top of the diversion cylinder 3, an opening at the upper part of the diversion cylinder 3 is provided with a funnel structure 9 and is positioned below the internal thread 12, one side of the diversion cylinder 3 is provided with an air extraction opening 5 which is connected with an air extraction pump, the bottom of the diversion cylinder 3 is provided with a liquid outlet 7, 2 gaskets 4 are arranged on the funnel structure 9, the gaskets; the sealing pad 6 is sleeved on the liquid outlet 7, the liquid outlet 7 is arranged in the collecting container 8 through the sealing pad 6, the sealing pad 6 is matched with an opening of the collecting container 8, the sealing pad 6 is a cylindrical rubber pad, and the diameter of the sealing pad is larger than that of the opening of the collecting container 8; the filter screen 1 is a stainless steel filter screen, and the sample cylinder 2 and the shunt cylinder 3 are glass cylinders.
Example 2: the structure of the device is the same as that of embodiment 1, the difference lies in that a rubber sealing ring is arranged on the gasket 4, the filter screen 1 is a nylon filter screen, and the sample cylinder 2 and the shunt cylinder 3 are organic glass cylinders.
When the device is used, a filter membrane 10 with a required aperture is placed between 2 gaskets 4, then the gaskets are placed on a funnel structure 9 of a shunting cylinder 3, after the sample cylinder 2 and the shunting cylinder 3 are connected through threads, a filter screen 1 is placed in the sample cylinder 2 through a fixing piece 11, a liquid outlet 7 is placed in a port of a collecting container 8 through a sealing pad 6, an air suction port 5 in the shunting cylinder 3 is connected with an air suction pump, the air suction pump is opened, the sealing pad 6 is pressed by hands to enable the sealing pad to be tightly attached to the port of the collecting container, then liquid to be filtered is added into the filter screen, and the filter screen primarily filters large granular substances such as algae, soil, gravels and the like in the liquid, so that the filter membrane is prevented from being blocked by impurity enrichment; negative pressure is formed in the collection container 8, liquid enters the sample tank 2 through the filter screen 1 and then enters the funnel structure 9 through the filter membrane, the liquid is secondarily filtered by the filter membrane 10, the liquid enters the collection container through the liquid outlet, after the suction filtration is finished, the air pump is closed, the shunt cylinder is taken down, the cover of the collection container is covered, and the filtrate can be used for analysis; and taking down the filter screen 1, removing the particles on the filter screen 1, replacing the filter membrane with required aperture according to actual conditions, and cleaning to perform suction filtration operation on the next sample.
In conclusion, by means of the technical scheme of the utility model, the two-stage filtration of the sample with high impurity content is realized, and the risk that the filter membrane is blocked is reduced; the air exhaust hole is arranged on the side surface of the flow dividing cylinder, so that the volume of the suction filtration device is reduced, the carrying is convenient, and the field operation is convenient; the cylindrical rubber pad is suitable for filtrate collecting containers with different calibers, such as a colorimetric tube, glass bottles with different volumes, plastic bottles and the like, and a liquid collecting bottle with a fixed caliber does not need to be prepared, so that the operation is convenient, and the cross contamination caused by using the same liquid collecting bottle is avoided.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021625521.3U CN212914748U (en) | 2020-08-07 | 2020-08-07 | a filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021625521.3U CN212914748U (en) | 2020-08-07 | 2020-08-07 | a filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212914748U true CN212914748U (en) | 2021-04-09 |
Family
ID=75334951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021625521.3U Expired - Fee Related CN212914748U (en) | 2020-08-07 | 2020-08-07 | a filter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212914748U (en) |
-
2020
- 2020-08-07 CN CN202021625521.3U patent/CN212914748U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203899243U (en) | A layered synchronous suction filtration device with different particle sizes | |
| CN107308706A (en) | Positive and negative pressure laboratory water quality analysis sample multi-stage filtration device | |
| CN211987401U (en) | Cell filtering device | |
| CN212914748U (en) | a filter device | |
| CN218994902U (en) | Quick extraction element of nitrate nitrogen suitable for in soil | |
| CN205832769U (en) | A kind of zooplankton classified filtering device | |
| CN203678255U (en) | Membrane filter and automatic and rapid membrane filtration device | |
| CN209060640U (en) | A kind of multistage Suction filtration device of convenience and high-efficiency | |
| CN213813004U (en) | Rapid filtering device for micro-plastic in water sample | |
| CN212134262U (en) | Water quality testing appearance preprocessing device | |
| CN213375359U (en) | Multi-group vacuum rapid filtering device | |
| CN214485929U (en) | Coating canning is with microfiltration device | |
| CN217247978U (en) | A tire processing and production industrial waste gas filter device | |
| CN212246333U (en) | A virus filtering and collecting device in negative pressure water body | |
| CN110723866A (en) | Landfill leachate high efficiency anaerobic reactor device | |
| CN216125286U (en) | Cell pressure filter | |
| CN208449066U (en) | A semi-automatic continuous filtering device | |
| CN213492238U (en) | Wisdom water utilities is with taking water quality testing's intelligent water treatment facilities | |
| CN213749214U (en) | A portable water sample extraction device | |
| CN212632052U (en) | Chemical waste liquid preprocessing device | |
| CN222218818U (en) | Environment microplastic classifying, separating and filtering device | |
| CN103657239B (en) | A kind of sedimeter | |
| CN219449414U (en) | Portable multifunctional novel filtering device | |
| CN217340592U (en) | A kind of adjusting filter device for garbage dust removal system | |
| CN212974345U (en) | Filter device for environmental detection laboratory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |