Centrifugal tube suction filtration device

Abstract

The utility model discloses a centrifugal tube suction filtration device which comprises a first assembly, a second assembly and a third assembly, the first assembly is a filter cup, liquid to be filtered is loaded in the filter cup, and the bottom of the filter cup is in threaded connection with a needle type filter; the second assembly is an upper cavity cover, the third assembly is a lower cavity cover, the upper cavity cover and the lower cavity cover are tightly combined, an upper hole site is formed in the upper cavity cover, and a lower hole site is formed in the lower cavity cover; the upper end and the lower end of the needle type filter penetrate through the upper hole site and the lower hole site respectively, and the lower end of the needle type filter is fixed to the platform of the third assembly. A centrifugal tube is installed at the bottom of the third assembly in a threaded mode. According to the utility model, the physical burden of experimenters can be greatly reduced, the working efficiency is remarkably improved, and the design undoubtedly brings unprecedented convenience and high efficiency to daily work of biochemical laboratories, and promotes further development of scientific research work.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory instrument application, in particular to a centrifuge tube filtration device. Background Art

[0002] Syringe filters, as an indispensable key tool in biochemical laboratories, are widely used to efficiently remove bacteria, particles and other exogenous pollutants in liquid samples to ensure the accuracy and repeatability of experimental results. They are easy to operate and only require the sample to be processed to be sucked into a syringe and then connected to the syringe filter. By applying external force to the bottom of the syringe, the sample can smoothly pass through the filter membrane gap of the syringe filter to achieve precise filtration. At the same time, various pollutants are effectively retained, ensuring the smooth progress of subsequent experiments.

[0003] Faced with the large number of small-volume liquid samples that are processed daily in the laboratory, and the significantly different viscosity characteristics between these samples, the traditional manual squeezing syringe method is particularly laborious and inefficient; experimenters repeat this action for a long time, which not only brings heavy pressure and fatigue to their hands, but may also affect the filtration effect and experimental progress due to inconvenient operation.

[0004] In view of this, we feel an urgent need for an innovative small-volume automatic filtration device to fundamentally solve the above problems. Utility Model Content

[0005] The utility model aims to provide a centrifugal tube filtration device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a centrifugal tube filtration device, comprising component one, component two and component three, wherein component one is a filter cup, the filter cup is loaded with liquid to be filtered, and a needle filter is threadedly connected to the bottom of the filter cup;

[0007] The second component is an upper cavity cover, and the third component is a lower cavity cover, and the upper cavity cover is tightly combined with the lower cavity cover, and an upper hole is opened on the upper cavity cover, and a lower hole is opened on the lower cavity cover;

[0008] The upper and lower ends of the needle filter pass through the upper hole and the lower hole respectively, and the lower end of the needle filter is fixed on the platform of component three;

[0009] A centrifuge tube is threadedly mounted on the bottom of the component three.

[0010] Preferably, a threaded column is provided at the bottom of the filter cup, a threaded interface is provided at the top of the needle filter, and the threaded column is adapted to the threaded interface.

[0011] Preferably, the bottom of the upper cavity cover is provided with an external thread, the top of the lower cavity cover is provided with a threaded docking port, and the external thread is adapted to the threaded docking port.

[0012] Preferably, a thread groove is provided at the bottom of the component three, and the thread groove is connected to the thread docking port of the centrifuge tube.

[0013] Preferably, a suction port is provided on one side of the component three, and the suction port is connected to an external vacuum pump.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The device combines ingenious mechanical design with filtration technology to achieve rapid and effective separation of solid particles or impurities in liquid samples, bringing significant changes to experimental processes in scientific research, biopharmaceuticals, chemical analysis and other fields.

[0016] The design of the device fully considers environmental protection and cost-effectiveness, and has extremely high reusability. Users only need to simply replace the disposable component and the needle filter to continue to engage in the next round of high-efficiency filtration operations, which greatly reduces operating costs and improves laboratory work efficiency and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the assembly structure of the utility model.

[0019] In the figure: 1-filter cup, 2-threaded column, 3-upper hole, 4-external thread, 5-lower hole, 6-threaded docking port, 7-filter port, 8-threaded groove, 9-needle filter, 10-centrifuge tube. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-2 The utility model provides a technical solution: a centrifugal tube filtration device, comprising a component one, a component two and a component three, wherein the component one is a filter cup 1, the filter cup 1 is loaded with liquid to be filtered, and a needle filter 9 is threadedly connected to the bottom of the filter cup 1;

[0022] Component 2 is an upper cavity cover, and component 3 is a lower cavity cover, and the upper cavity cover is tightly combined with the lower cavity cover, an upper hole position 3 is opened on the upper cavity cover, and a lower hole position 5 is opened on the lower cavity cover;

[0023] The upper and lower ends of the needle filter 9 pass through the upper hole 3 and the lower hole 5 respectively, and the lower end of the needle filter 9 is fixed on the platform of component three;

[0024] A centrifuge tube 10 is threadedly mounted on the bottom of component three.

[0025] In the utility model, a threaded column 2 is arranged at the bottom of the filter cup 1, a threaded interface is opened at the top of the needle filter 9, and the threaded column 2 is adapted to the threaded interface.

[0026] In the utility model, the bottom of the upper cavity cover is provided with an external thread 4, the top of the lower cavity cover is provided with a threaded docking port 6, and the external thread 4 is adapted to the threaded docking port 6.

[0027] In the utility model, a thread groove 8 is provided at the bottom of the component three, and the thread groove 8 is connected to the threaded interface of the centrifuge tube 10 .

[0028] In the utility model, a suction port 7 is provided on one side of the component three, and the suction port 7 is connected to an external vacuum pump.

[0029] When the utility model is used, the components 1, 2, 3, the needle filter and the centrifuge tube need to be assembled. The specific steps are as follows:

[0030] First, connect the threaded groove 8 of component three with the threaded docking port of the centrifuge tube 10, then pass the lower end of the needle filter through the lower hole 5 and fix it on the platform of component three, then connect components two and three through the external thread 4 and the threaded docking port 6, the upper end of the needle filter passes through the upper hole 3 and is tightly connected to the threaded column 2 at the bottom of the filter cup of component one, finally connect the filtration port 7 of component three to the external vacuum pump, and the centrifuge tube filtration device can be assembled.

[0031] When in use, pour the liquid sample to be processed into the filter cup 1 of component one, start the vacuum pump to evacuate, and the centrifuge tube and component three form a local vacuum condition. The liquid to be filtered passes through the filter membrane of the needle filter under atmospheric pressure and is successfully collected at the bottom of the centrifuge tube. When filtering different samples, only the disposable component one and the needle filter need to be replaced.

[0032] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the utility model have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A centrifuge tube filtration device, characterized in that: The invention comprises a component 1, a component 2 and a component 3, wherein the component 1 is a filter cup (1), the filter cup (1) is loaded with liquid to be filtered, and a needle filter (9) is threadedly connected to the bottom of the filter cup (1); The second component is an upper cavity cover, and the third component is a lower cavity cover, and the upper cavity cover is tightly combined with the lower cavity cover. An upper hole position (3) is formed on the upper cavity cover, and a lower hole position (5) is formed on the lower cavity cover. The upper and lower ends of the needle filter (9) pass through the upper hole (3) and the lower hole (5) respectively, and the lower end of the needle filter (9) is fixed on the platform of component three; A centrifuge tube (10) is threadedly mounted on the bottom of the component three.

2. A centrifuge tube filtration device according to claim 1, characterized in that: The bottom of the filter cup (1) is provided with a threaded column (2), the top of the needle filter (9) is provided with a threaded interface, and the threaded column (2) is adapted to the threaded interface.

3. A centrifuge tube filtration device according to claim 1, characterized in that: The bottom of the upper cavity cover is provided with an external thread (4), and the top of the lower cavity cover is provided with a threaded docking port (6), and the external thread (4) is adapted to the threaded docking port (6).

4. A centrifuge tube filtration device according to claim 1, characterized in that: A thread groove (8) is provided at the bottom of the component three, and the thread groove (8) is connected to the threaded interface of the centrifuge tube (10).

5. A centrifuge tube filtration device according to claim 1, characterized in that: A suction port (7) is provided on one side of the component three, and the suction port (7) is connected to an external vacuum pump.

Images