CN210186579U - Needle type filter device convenient for collecting sample liquid - Google Patents
Needle type filter device convenient for collecting sample liquid Download PDFInfo
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- CN210186579U CN210186579U CN201920550705.9U CN201920550705U CN210186579U CN 210186579 U CN210186579 U CN 210186579U CN 201920550705 U CN201920550705 U CN 201920550705U CN 210186579 U CN210186579 U CN 210186579U
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- lower cover
- upper cover
- cover
- filter membrane
- boss
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- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 125000003003 spiro group Chemical group 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000011112 process operation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
本实用新型公开了一种便于收集样液的针式过滤器装置，包括相互螺接密封扣合的上盖和下盖及设置于上盖和下盖之间的滤膜，所述上盖和下盖的内侧面均为内螺纹结构，上盖上部设有与注射器直接连接的进液口，下盖上部设有与上盖内侧面相配的连接凸台，该连接凸台外侧面为外螺纹结构，连接凸台上平面上均布有多个过滤孔，滤膜设置于连接凸台上平面上并通过设置于上盖内部的O型密封圈压紧密封，用于防止上盖与下盖之间滤膜的松动，连接凸台的底部与设置于下盖内部的出液口相连，该出液口与螺接于下盖内侧面上的离心管连接。本实用新型结构简单、体积小巧，且滤膜能够承受一定的压力，而且过滤过程中针式过滤器可以固定于离心管上，操作简单易行。
The utility model discloses a needle filter device which is convenient for collecting sample liquid. The inner surface of the lower cover is of internal thread structure, the upper part of the upper cover is provided with a liquid inlet directly connected to the syringe, the upper part of the lower cover is provided with a connection boss matching the inner surface of the upper cover, and the outer surface of the connection boss is an external thread. Structure, there are a plurality of filter holes evenly distributed on the upper plane of the connecting boss, the filter membrane is arranged on the upper plane of the connecting boss and is pressed and sealed by the O-shaped sealing ring arranged inside the upper cover, which is used to prevent the upper cover and the lower cover. Between the loosening of the filter membrane, the bottom of the connection boss is connected with the liquid outlet arranged inside the lower cover, and the liquid outlet is connected with the centrifuge tube screwed on the inner surface of the lower cover. The utility model has the advantages of simple structure and small size, and the filter membrane can bear a certain pressure, and the needle filter can be fixed on the centrifugal tube during the filtration process, and the operation is simple and easy.
Description
Technical Field
The utility model belongs to the technical field of the pin type filter, concretely relates to pin type filter device convenient to collect appearance liquid.
Background
In the whole technical field, a large number of substances related to various aspects of life need to be analyzed by various chemical substances, such as food, daily necessities, various additives, artificially synthesized elements, environmental pollution and the like every year, and the operations of purification, filtration and the like are mostly involved before the sample is tested. Most of the processes for treating the sample liquid require further analysis and detection through a needle filter, so the needle filter is currently an essential common test consumable in laboratories, and can remove large-particle pollutants in the sample liquid.
However, the existing needle filter has the phenomena that the needle filter is not easy to fix during operation, sample liquid is easy to scatter and the like in the process of filtering fine sample liquid, and particularly when the number of the filtered sample liquid is large, the sample liquid is easy to drop into a centrifuge tube or other devices for collecting the sample liquid, so that the problem of low working efficiency is caused.
Disclosure of Invention
The utility model provides a technical problem provide a pin type filter device convenient to collect appearance liquid, effectively solved current pin type filter difficult fixed when filtering meticulous appearance liquid in-process operation, phenomenons such as appearance liquid scatters easily.
The utility model adopts the following technical proposal for solving the technical problems, a needle type filter device which is convenient for collecting sample liquid, it is characterized by comprising an upper cover and a lower cover which are screwed and sealed with each other and a filter membrane arranged between the upper cover and the lower cover, the inner side surfaces of the upper cover and the lower cover are both of internal thread structures, the upper part of the upper cover is provided with a liquid inlet which is directly connected with the injector, the upper part of the lower cover is provided with a connecting lug boss which is matched with the inner side surface of the upper cover, the outer side surface of the connecting boss is of an external thread structure, a plurality of filter holes are uniformly distributed on the upper plane of the connecting boss, the filter membrane is arranged on the upper plane of the connecting boss and is tightly pressed and sealed by an O-shaped sealing ring arranged in the upper cover, a centrifuging tube connection for preventing between upper cover and the lower cover filter membrane not hard up, the bottom of connecting the boss links to each other with the liquid outlet that sets up in the lower cover inside, this liquid outlet and spiro union on the lower cover medial surface.
Further preferably, a cavity for storing sample liquid to be filtered is arranged in the upper cover and used for reducing the pressure of the filter membrane.
The utility model discloses simple structure, small in size, and the filter membrane can bear certain pressure, and on pin type filter can be fixed in the centrifuging tube in the filtering process moreover, easy operation is reliable and easy.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-liquid inlet, 2-upper cover, 3-inner side of upper cover, 4-filter membrane, 5-connecting boss, 6-lower cover, 7-liquid outlet.
Detailed Description
The specific technical solution of the present invention will be described in detail with reference to the accompanying drawings. A needle type filter device convenient for collecting sample liquid comprises an upper cover 2 and a lower cover 6 which are in threaded connection, sealing and buckling with each other, and a filter membrane 4 arranged between the upper cover 2 and the lower cover 6, wherein the inner side surfaces of the upper cover 2 and the lower cover 6 are both of an internal thread structure, a liquid inlet 1 directly connected with an injector is arranged at the upper part of the upper cover 2, a cavity for storing sample liquid to be filtered is arranged inside the upper cover 2 and used for reducing the pressure of the filter membrane 4, a connecting boss 5 matched with the inner side surface of the upper cover 2 is arranged at the upper part of the lower cover 6, the outer side surface of the connecting boss 5 is of an external thread structure, a plurality of filter holes are uniformly distributed on the upper plane of the connecting boss 5, the filter membrane 4 is arranged on the upper plane of the connecting boss 5 and is tightly pressed and sealed by an O-shaped sealing ring arranged inside the upper cover 2 and used for preventing the filter membrane 4 between the upper, make appearance liquid can flow smoothly, also guaranteed the filter effect of appearance liquid, connect the stock solution cavity of boss 5 and set up in the inside liquid outlet 7 of lower cover 6 and link to each other, this liquid outlet 7 and spiro union are connected in the centrifuging tube on the medial surface of lower cover 6, and the mouth of pipe spiro union of centrifuging tube is in the medial surface of lower cover 6, easy operation to effectively solved current needle filter when filtering meticulous appearance liquid in-process operation difficult fixed, appearance liquid phenomenon such as scatter easily.
The foregoing shows and describes the general principles of the present invention, with its principal features and advantages, and further, various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. The utility model provides a pin filter device convenient to collect appearance liquid, its characterized in that includes the upper cover and the lower cover of the sealed lock of mutual spiro union and sets up the filter membrane between upper cover and lower cover, the medial surface of upper cover and lower cover is female thread structure, and the upper cover upper portion is equipped with the inlet with syringe lug connection, and the lower cover upper portion is equipped with the connection boss that matches with the upper cover medial surface, and this connection boss lateral surface is male thread structure, and the equipartition has a plurality of filtration pores of crossing on the connection boss upper plane, and the filter membrane sets up on connecting the boss upper plane and compresses tightly through setting up in the inside O type sealing washer of upper cover and seals for prevent the not hard up of filter membrane between upper cover and the lower cover, connect the bottom of boss with set up the liquid outlet of lower cover inside and link to each other, this liquid outlet and the.
2. The needle filter device for facilitating collection of a sample liquid according to claim 1, wherein: the upper cover is internally provided with a cavity for storing sample liquid to be filtered, and the cavity is used for reducing the pressure of the filter membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550705.9U CN210186579U (en) | 2019-04-22 | 2019-04-22 | Needle type filter device convenient for collecting sample liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550705.9U CN210186579U (en) | 2019-04-22 | 2019-04-22 | Needle type filter device convenient for collecting sample liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210186579U true CN210186579U (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920550705.9U Active CN210186579U (en) | 2019-04-22 | 2019-04-22 | Needle type filter device convenient for collecting sample liquid |
Country Status (1)
| Country | Link |
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| CN (1) | CN210186579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717513A (en) * | 2020-12-23 | 2021-04-30 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Centrifuging tube suction filter device |
-
2019
- 2019-04-22 CN CN201920550705.9U patent/CN210186579U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717513A (en) * | 2020-12-23 | 2021-04-30 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Centrifuging tube suction filter device |
| CN112717513B (en) * | 2020-12-23 | 2023-03-03 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Centrifuging tube suction filter device |
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