CN219232707U

CN219232707U - Centrifugal filter tube

Info

Publication number: CN219232707U
Application number: CN202222976154.7U
Authority: CN
Inventors: 张雅莉; 孙萌; 韩建勋; 南倩; 托合提萨伊普·图尔荪托合提
Original assignee: Pony Test Co
Current assignee: Pony Test Co
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-06-23
Anticipated expiration: 2032-11-04

Abstract

The utility model belongs to the field of laboratory devices, and relates to a centrifugal filter tube, which comprises an upper centrifuge tube, a lower centrifuge tube, a connecting tube, an upper filter membrane and a lower filter membrane. Wherein, the openings of the upper centrifuge tube and the lower centrifuge tube are provided with external threads with the same specification; the connecting pipe is a cylinder with two openings at two ends and is divided into an upper part and a lower part by a supporting screen plate, the upper part and the lower part are provided with internal threads with the same specification, and the internal threads are respectively matched with the external threads of the upper centrifuge tube and the lower centrifuge tube; the diameters of the upper filter membrane and the lower filter membrane are consistent with the diameters of the supporting screen plates. According to the utility model, the upper filter membrane and the lower filter membrane are respectively arranged on the upper side and the lower side of the supporting screen plate, the two ends of the connecting pipe are respectively connected with the upper centrifuge tube and the lower centrifuge tube, and finally the device is integrally turned upside down and then is arranged in the centrifuge for centrifugation, so that clear solution of turbid solution in the lower centrifuge tube before centrifugation can be obtained in the upper centrifuge tube, the integrated operation of centrifugation and separation in solid-liquid separation is realized, and the possibility of recontamination of the clear solution after centrifugation is reduced.

Description

Centrifugal filter tube

Technical Field

The utility model belongs to the field of laboratory devices, relates to a centrifugal filter pipe, and particularly relates to a centrifugal filter pipe which can realize centrifugal and separation integrated operation in solid-liquid separation and reduce the possibility of recontamination of clarified solution after centrifugation.

Background

Centrifugal separation is a very efficient way when solid-liquid separation is required during sample pretreatment, especially when suspensions containing very small solid particles are to be separated. However, in the conventional centrifugal separation operation, the solid-liquid two phases are separated into an upper layer and a lower layer after centrifugation, and further separation is required, so that a clear solution is often become turbid again in the separation process. Therefore, there is a need for a centrifugal separation apparatus that achieves an integrated operation of centrifugation and separation in solid-liquid separation and reduces the possibility of recontamination of a clarified solution after centrifugation.

Disclosure of Invention

The utility model has the advantages of providing a centrifugal filter pipe, in particular to a centrifugal filter pipe which realizes the integrated operation of centrifugation and separation in solid-liquid separation and reduces the possibility of recontamination of clarified solution after centrifugation.

In order to achieve the functions, the centrifugal filter tube is characterized by comprising five parts, namely an upper centrifuge tube (1), a lower centrifuge tube (2), a connecting tube (3), an upper filter membrane (5) and a lower filter membrane (6), which are made of transparent plastic materials.

Wherein, the openings of the upper centrifuge tube (1) and the lower centrifuge tube (2) are provided with external threads with the same specification.

The connecting pipe (3) is a cylinder with two openings at two ends and is divided into an upper part and a lower part by a supporting screen plate (4), and the upper part and the lower part are provided with internal threads with the same specification and are respectively matched with the external threads of the upper centrifuge tube (1) and the lower centrifuge tube (2).

The diameters of the upper filter membrane (5) and the lower filter membrane (6) are consistent with the diameters of the supporting screen plates (4).

The outer sides of the upper centrifuge tube (1) and the lower centrifuge tube (2) are provided with scale marks.

The beneficial effects are that: the utility model relates to a centrifugal filter tube, which is characterized in that an upper filter membrane and a lower filter membrane are respectively arranged on the upper side and the lower side of a supporting screen plate, two ends of a connecting tube are respectively connected with an upper centrifuge tube and a lower centrifuge tube, and finally the device is integrally turned upside down and then is placed in a centrifuge for centrifugation, so that clear solution of turbid solution placed in the lower centrifuge tube before centrifugation can be obtained in the upper centrifuge tube, the integrated operation of centrifugation and separation in solid-liquid separation is realized, and the possibility of recontamination of the clear solution after centrifugation is reduced.

Drawings

FIG. 1 is an exploded view of the various parts of the present utility model;

FIG. 2 is a schematic view of a connecting tube according to the present utility model;

FIG. 3 is a schematic view of a support screen of the present utility model;

FIG. 4 shows a first embodiment of the present utility model;

FIG. 5 shows a second embodiment of the present utility model;

fig. 6. The present utility model uses a schematic diagram three.

Wherein: 1. loading into a centrifuge tube; 2. centrifuging the tube; 3. a connecting pipe; 4. a support screen; 5. filtering with a filter membrane; 6. a lower filter membrane; 7. turbid solution to be centrifugally filtered; 8. the clear solution obtained after centrifugation.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Example 1

When solid-liquid separation operation is needed, as shown in fig. 4, firstly, the turbid solution to be subjected to solid-liquid separation is put into a lower centrifuge tube, a filter membrane is placed on the lower side of a supporting screen plate, and the lower centrifuge tube and the lower end of a connecting tube are screwed and installed through threads; a filter membrane is placed on the upper side of the supporting screen plate, and the upper centrifuge tube and the upper end of the connecting tube are screwed and installed through threads; then the device is turned upside down as shown in fig. 5, and is placed in a centrifuge for centrifugation, and a clear solution of the turbid solution can be obtained in an upper centrifuge tube as shown in fig. 6.

The above examples are provided for the purpose of illustrating the utility model and are not intended to be limiting; it should be noted that various changes and modifications could be made by one of ordinary skill in the art without departing from the scope of the inventive concept, which would fall within the scope of the present utility model; therefore, all equivalent changes and modifications to the scope of the claims should be covered by the claims.

Claims

1. The centrifugal filter tube is characterized by comprising an upper centrifuge tube (1), a lower centrifuge tube (2), a connecting tube (3), an upper filter membrane (5) and a lower filter membrane (6); wherein, the openings of the upper centrifuge tube (1) and the lower centrifuge tube (2) are provided with external threads with the same specification; the connecting pipe (3) is a cylinder with two open ends and is divided into an upper part and a lower part by a supporting screen plate (4), and the upper part and the lower part are provided with internal threads with the same specification and are respectively matched with the external threads of the upper centrifuge tube (1) and the lower centrifuge tube (2); the diameters of the upper filter membrane (5) and the lower filter membrane (6) are consistent with the diameters of the supporting screen plates (4).

2. The centrifugal filter tube according to claim 1, wherein the centrifugal filter tube is made of transparent plastic material, and graduation marks are arranged on the outer sides of the upper centrifuge tube (1) and the lower centrifuge tube (2).