CN218674879U - Micro filter - Google Patents
Micro filter Download PDFInfo
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- CN218674879U CN218674879U CN202222973311.9U CN202222973311U CN218674879U CN 218674879 U CN218674879 U CN 218674879U CN 202222973311 U CN202222973311 U CN 202222973311U CN 218674879 U CN218674879 U CN 218674879U
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Abstract
The utility model discloses a micro filter, which comprises a cylinder body, wherein a through cavity is arranged in the cylinder body, a first piston is arranged at one end of the cavity in a sliding way, and a liquid outlet pipe is communicated with the other end of the cavity; one end of the cavity close to the liquid outlet pipe is provided with a filter layer, the filter layer is provided with filter holes, and the aperture range of the filter holes is 0.22-0.45 um; one end of the filter layer far away from the liquid outlet pipe is provided with a water removing layer. In the utility model, the water removal layer absorbs the water in the sample, and the filter layer filters the fixed impurities separated out from the sample through the tiny filter holes; in addition, the first piston provides power for sample dewatering and filtering, when the first piston slides towards the liquid outlet pipe, the pressure between the piston and the cavity drives the sample to move towards the liquid outlet pipe, and the organic solvent sample in the cavity is ensured to be dewatered and filtered.
Description
Technical Field
The utility model relates to an organic solvent treatment technical field, concretely relates to microfilter.
Background
In the process of analyzing and detecting semi-volatile organic pollutants in solid, water sample and soil, the sample is often required to be extracted, purified and concentrated, and then is analyzed and detected by a detection device. Due to the complexity of a test sample, the purified and concentrated extraction liquid becomes turbid due to the precipitation of some solid impurities, so that a sample injection needle and a pollution sample injection system are blocked; and the concentrated extract liquid is analyzed along with the increase of the concentration multiple, so that the constant volume is inaccurate, and the detection result is influenced. If the water content of the concentrated extract is too high, water enters the detection equipment during sample injection, and serious consequences such as damage to a chromatographic column and a detector can be caused. Therefore, there is a need for a device to treat the fixed impurities and water in the concentrated extract.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model provides a microfilter for filtering impurity and adsorbed water in the sample.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:
providing a microfilter comprising:
the device comprises a cylinder body, a first piston and a second piston, wherein a through cavity is arranged in the cylinder body, the first piston is arranged at one end of the cavity in a sliding mode, and the other end of the cavity is communicated with a liquid outlet pipe;
the filtering layer is arranged at one end of the cavity close to the liquid outlet pipe, and is provided with filtering holes, and the aperture range of the filtering holes is 0.22-0.45 um;
and the water removal layer is arranged at one end of the filter layer far away from the liquid outlet pipe.
Adopt above-mentioned technical scheme's beneficial effect: the water removal layer absorbs water in the sample, and the filter layer filters the fixed impurities separated out from the sample through the tiny filter holes; in addition, the first piston provides power for sample dewatering and filtering, when the first piston slides towards the liquid outlet pipe, the pressure between the piston and the cavity drives the sample to move towards the liquid outlet pipe, and it is ensured that all the organic solvent samples in the cavity are dewatered and filtered.
Furthermore, a through hole is formed in the liquid outlet pipe, a second piston is arranged in the through hole in a sliding mode, the aperture of the through hole is equal to the inner diameter of the liquid outlet pipe, and the axis of the through hole is perpendicular to and intersected with the axis of the liquid outlet pipe; the second piston is used for opening or closing the liquid outlet pipe, so that when organic solvent is added from one end, far away from the liquid outlet pipe, of the cylinder, the organic solvent is prevented from directly leaking from the liquid outlet pipe.
Furthermore, the one end of second piston is provided with connects the rope, connects the one end that the rope kept away from the second piston and the outer wall connection of barrel, makes the second piston follow the through-hole and takes out the back and still hang on the barrel, prevents losing of second piston.
Further, the water removing layer is an anhydrous sodium sulfate layer, and the anhydrous sodium sulfate layer can adsorb water in the sample.
Furthermore, a plurality of annular grooves are formed in the first piston, and sealing rings are arranged between the annular grooves and the cavity, so that the sealing performance between the first piston and the cavity is guaranteed, and air leakage from a gap between the first piston and the cavity is avoided.
Furthermore, a piston handle is arranged at one end of the first piston, which is far away from the liquid outlet pipe, so that an operator can apply acting force conveniently; the diameter of the piston handle is larger than that of the piston, so that the area of the acting surface is increased, and discomfort caused by pressing by an operator is avoided.
Furthermore, the barrel is provided with a handle, so that an operator can take the barrel conveniently.
Drawings
FIG. 1 is a schematic view of a microfilter;
the water filter comprises a piston handle 1, a piston handle 2, a first piston 3, a handle 4, an annular groove 5, a cavity 6, a water removing layer 7, a filter layer 8, a connecting rope 9, a second piston 10, a liquid outlet pipe 11, a through hole 12 and a cylinder.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
As shown in fig. 1, the present solution provides a microfilter comprising:
the cylinder 12 is internally provided with a through cavity 5, one end of the cavity 5 is provided with a first piston 2 in a sliding way, and the other end of the cavity 5 is communicated with a liquid outlet pipe 10;
the filter layer 7 is arranged at one end of the cavity 5 close to the liquid outlet pipe 10, and is provided with filter holes, and the aperture range of the filter holes is 0.22-0.45 um;
the water removing layer 6 is arranged at one end of the filter layer 7 far away from the liquid outlet pipe 10;
wherein, the filter layer 7 can adopt a glass sand core filter membrane; the cylinder body 12, the first piston 2 and the liquid outlet pipe 10 can be made of glass materials, so that the recycling is facilitated; in addition, one end of the cavity 5 far away from the liquid outlet pipe 10 is a cylindrical hole, one end of the cavity 5 close to the liquid outlet pipe 10 is a tapered hole, the aperture of one end of the tapered hole close to the liquid outlet pipe 10 is equal to the inner diameter of the liquid outlet pipe 10, and the aperture of the other end of the tapered hole is equal to the aperture of the cylindrical hole.
The water removal layer 6 absorbs water in the sample, and the filter layer 7 filters the fixed impurities separated out from the sample through a tiny filter hole; in addition, the first piston 2 provides power for sample dewatering and filtering, and when the first piston 2 slides towards the drain pipe 10, the pressure between the piston and the cavity 5 drives the sample to move towards the drain pipe 10, so that the organic solvent sample in the cavity 5 is ensured to be dewatered and filtered.
When the liquid outlet pipe is implemented, a through hole 11 is preferably formed in the liquid outlet pipe 10, the second piston 9 is arranged in the through hole 11 in a sliding mode, the aperture of the through hole 11 is equal to the inner diameter of the liquid outlet pipe 10, and the axis of the through hole 11 is perpendicular to and intersected with the axis of the liquid outlet pipe 10; the second piston 9 is used for opening or closing the liquid outlet pipe 10, so that when organic solvent is added from one end of the cylinder 12 far away from the liquid outlet pipe 10, the organic solvent is prevented from directly leaking from the liquid outlet pipe 10; wherein, the hole wall of the through hole 11 can also be provided with a sealing ring.
In an embodiment of the present invention, one end of the second piston 9 is provided with a connection rope 8, and the connection rope 8 is connected to the outer wall of the cylinder 12 and the end of the second piston 9 away from the connection rope 8, so that the second piston 9 can be hung on the cylinder 12 after being taken out from the through hole 11, thereby preventing the second piston 9 from being lost.
When in design, the water removal layer 6 is preferably an anhydrous sodium sulfate layer, and the anhydrous sodium sulfate layer can adsorb water in the sample.
In the implementation, the first piston 2 is preferably provided with a plurality of annular grooves 4, and a sealing ring is arranged between each annular groove 4 and the corresponding cavity 5, so that the sealing property between the first piston 2 and the corresponding cavity 5 is ensured, and air is prevented from leaking from a gap between the first piston 2 and the corresponding cavity 5; wherein, this sealing washer is corrosion-resistant sealing washer.
In one embodiment of the present invention, the end of the first piston 2 away from the liquid outlet pipe 10 is provided with a piston handle 1, which is convenient for an operator to apply an acting force; the diameter of the piston handle 1 is larger than that of the piston, so that the area of an acting surface is increased, and discomfort caused by pressing by an operator is avoided.
During the design, be provided with handle 3 on the preferred barrel 12 of this scheme, make things convenient for operating personnel to take.
In addition, the micro filter is a recyclable device, and the water removing layer 6 can be automatically filled after the micro filter is used and is poured out and cleaned by anhydrous sodium sulfate, so that the energy-saving and environment-friendly effects are achieved.
The working process of the scheme is described in the following with reference to the attached drawings:
inserting the second piston 9 into the through hole 11, pulling the first piston 2 out of the cavity 5, and injecting the sample from one end of the cavity 5 far away from the liquid outlet pipe 10;
inserting the first piston 2 into the cavity 5 with the outlet pipe 10 above the collection container;
the second piston 9 is pulled out from the through hole 11, then the first piston 2 is pressed, so that the sample in the cavity 5 passes through the water removing layer 6 and the filter layer 7 in sequence under the double effects of pressure and gravity, and finally is discharged into a collection container from the liquid outlet pipe 10.
Claims (7)
1. A microfilter, comprising:
the device comprises a cylinder body (12), wherein a through cavity (5) is arranged in the cylinder body, one end of the cavity (5) is provided with a first piston (2) in a sliding mode, and the other end of the cavity (5) is communicated with a liquid outlet pipe (10);
the filtering layer (7) is arranged at one end of the cavity (5) close to the liquid outlet pipe (10), and is provided with filtering holes, and the aperture range of the filtering holes is 0.22-0.45 um;
and the water removing layer (6) is arranged at one end of the filter layer (7) far away from the liquid outlet pipe (10).
2. The microfilter according to claim 1, wherein a through hole (11) is arranged on the liquid outlet pipe (10), a second piston (9) is arranged in the through hole (11) in a sliding manner, the aperture of the through hole (11) is equal to the inner diameter of the liquid outlet pipe (10), and the axis of the through hole (11) is perpendicular to and intersects with the axis of the liquid outlet pipe (10).
3. The microfilter according to claim 2, wherein the second piston (9) is provided at one end with a connecting string (8), and the end of the connecting string (8) remote from the second piston (9) is connected to the outer wall of the barrel (12).
4. Microfilter according to claim 1, characterised in that the water removal layer (6) is an anhydrous sodium sulphate layer.
5. The microfilter according to claim 1, wherein the first piston (2) is provided with a plurality of annular grooves (4), and wherein sealing rings are provided between the annular grooves (4) and the cavity (5).
6. A microfilter according to claim 1, characterised in that the end of the first piston (2) remote from the outlet pipe (10) is provided with a piston shank (1), the diameter of the piston shank (1) being larger than the diameter of the piston.
7. A microfilter according to claim 1, characterised in that the cartridge (12) is provided with a handle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222973311.9U CN218674879U (en) | 2022-11-08 | 2022-11-08 | Micro filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222973311.9U CN218674879U (en) | 2022-11-08 | 2022-11-08 | Micro filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218674879U true CN218674879U (en) | 2023-03-21 |
Family
ID=85569004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222973311.9U Active CN218674879U (en) | 2022-11-08 | 2022-11-08 | Micro filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218674879U (en) |
-
2022
- 2022-11-08 CN CN202222973311.9U patent/CN218674879U/en active Active
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