一种离心管的超滤结构
By employing a double-layer ultrafiltration cartridge and a flat-mouth multi-directional drain device in the centrifuge tube, the problems of low filtration efficiency and easy clogging of the cartridge in the existing technology are solved, achieving efficient and rapid sample filtration and purification.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU PLUS PLASTIC TECH CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ultrafiltration structures for centrifuge tubes have low filtration efficiency during large-capacity centrifugation, requiring longer processing times to complete the same sample processing task. Furthermore, individual filter cartridges are prone to clogging, resulting in incomplete filtration.
It adopts a dual-layer ultrafiltration filter structure. The sample solution first passes through the first ultrafiltration filter for preliminary screening and concentration, and then passes through the second ultrafiltration filter for further removal of impurities. Combined with the flat-mouth multi-directional drain design, the pressure is evenly distributed to avoid filter clogging.
It improves filtration efficiency and sample purity, shortens the filtration cycle, avoids filter clogging, and ensures sample quality.
Smart Images
Figure CN224506759U_ABST
Abstract
Claims
1. An ultrafiltration structure of a centrifuge tube, characterized by: The device includes a housing (1), an end cap (2) with a liquid inlet threaded on the upper end of the housing (1), a flat-mouth multi-directional drainer (6) detachably installed on the lower end of the housing (1), and two arc-shaped support edges (101) integrally formed on the inner wall of the housing (1). A first ultrafiltration filter element (3) is installed inside the housing (1) above the two arc-shaped support edges (101), and a support tray (103) is integrally formed on the inner wall of the housing (1) below the arc-shaped support edges (101). A second ultrafiltration filter element (4) is installed on the upper surface of the support tray (103).
2. The ultrafiltration structure of a centrifuge tube according to claim 1, characterized in that: An annular ramp is integrally formed on the inner wall of the outer shell (1) below the arc-shaped support edge (101), and the inner diameter of the annular ramp is equal to the outer diameter of the second ultrafiltration filter element (4).
3. The ultrafiltration structure of a centrifuge tube according to claim 2, characterized in that: A gap (102) is provided between the two arc-shaped support edges (101), and arc-shaped guide grooves (104) are provided at the front and rear positions of the surface of the support tray (103).
4. The ultrafiltration structure of a centrifuge tube according to claim 1, characterized in that: The flat-mouth multi-directional drainer (6) includes an internally threaded protruding tube (601) threaded onto the lower end of the outer shell (1), a plurality of inclined drain tubes (602) integrally formed at the bottom end of the internally threaded protruding tube (601), and a flat-mouth expansion tube (603) integrally formed at the bottom end of the inclined drain tubes (602).
5. The ultrafiltration structure of a centrifuge tube according to claim 4, characterized in that: The bottom end of the outer shell (1) is integrally formed with an external threaded protrusion (5) for threaded engagement with the internal threaded protrusion (601).
6. The ultrafiltration structure of a centrifuge tube according to claim 4, characterized in that: The outer diameter of the internally threaded protruding tube (601) is less than or equal to the outer diameter of the outer shell (1). The internally threaded protruding tube (601), the inclined drain tube (602), and the flat-mouth expansion tube (603) are made of hard plastic components.