CN203030299U

CN203030299U - Centrifuge tube

Info

Publication number: CN203030299U
Application number: CN 201320038785
Authority: CN
Inventors: 吴敏; 周昱; 徐敦明; 黎翠玉; 连英杰; 林立毅
Original assignee: 吴敏
Priority date: 2013-01-24
Filing date: 2013-01-24
Publication date: 2013-07-03
Anticipated expiration: 2023-01-24

Abstract

The utility model relates to a tube-shaped container device, and particularly discloses a centrifuge tube for liquid-liquid extraction. The centrifuge tube comprises a tube body, wherein the upper and lower ends of the tube body are both provided with openings, the opening of the lower end of the tube body is sealed through a piston which is pushed along the inner wall of the tube body, and the openings of the upper end of the tube body is sealed through a cover body; preferably, the upper part of the tube body is provided with a connecting tube the tube diameter of which is less than that of the tube body, and the upper end of the connecting tube is open; preferably, the outer wall of the connecting tube is provided with an outer thread, the inner wall of the cover body is provided with an inner thread, the opening of the upper end of the connecting tube is sealed through the threaded connection of the cover body and the connecting tube; and preferably, the piston comprises a piston valve arranged on the inner wall of the tube body and a piston push rod for pushing the piston valve. The tube-shaped container device provided by the utility model can rapidly effectively extract and purify a compound, and the extraction efficiency is greatly improved.

Description

Centrifuge tube

Technical field

The utility model relates to a kind of tubular container device, especially for the centrifuge tube of liquid-liquid extraction.

Background technology

Liquid-liquid extraction, claim solvent extraction again, also claiming extracting or extraction, is the difference of utilizing compound solubility or distribution coefficient in the solvent of two kinds immiscible (or slightly solubles), and compound is transferred in a kind of solvent another solvent and the metallurgical process that extracts.Liquid-liquid extraction is one of the most frequently used extraction and means of purifying compounds in chemical analysis technology.Liquid-liquid extraction now has been widely used in the separation of petroleum distillate and refining, the extraction of uranium, thorium, plutonium and purifying, the extraction of non-ferrous metal, rare metal, precious metal with separate antibiotic, organic acid, alkaloid extraction, and wastewater treatment etc.

Case used in the liquid-liquid extraction is called centrifuge tube.Centrifuge tube is a kind of tubulose sample container, but with closure or gland.For example be the not centrifuge tube of the open-type of with closure (glass tube or plastic tube) of a kind of tradition shown in Fig. 1 a, Fig. 1 b, the pipe bottom can be round bottom or conical bottom.The shortcoming of tradition centrifuge tube is: need to pipette needed solution layer with suction pipe after the layering of liquid liquid, cause extracting operation loaded down with trivial details.

The utility model content

At the deficiencies in the prior art, the utility model provides a kind of centrifuge tube that is applicable to liquid-liquid extraction, can effectively take out needed extraction solution layer fast, improves and extracts and purification efficiency.

A kind of centrifuge tube comprises a body, and the top and bottom of this body are opening, and the opening of this body lower end can seal along the piston that inboard wall of tube body promotes by one, and the opening of this body upper end seals by a lid.

Preferably, described body top has a caliber less than the tube connector of body, and the upper end of this tube connector is opening.

Preferably, the outer wall of described tube connector has external screw thread, and cover body has internal thread, the opening of tube connector upper end is sealed with being threaded of tube connector by lid.

Preferably, described piston comprises the piston valve that is arranged at inboard wall of tube body and the piston mandril that promotes this piston valve, and this piston mandril and piston valve are for removably connecting.

Centrifuge tube of the present utility model is when extraction and purifying compounds, with be extracted fully mix with the liquid of purifying and extractant after, extract and pushed in the body by the opening on the body with instruments such as syringes, utilize the lid of body upper end to seal then, putting into the centrifugal or sufficient standing of centrifuge makes liquid liquid separate, remove the lid of body upper end then, by promoting the piston of body lower end, the different layers solution after separating is taken out (extruding) respectively again.

The beneficial effects of the utility model are: behind the lid and piston seal of the top and bottom by body, be convenient to place centrifuge or be convenient to rock after leave standstill and liquid liquid separated, opening by the upper end adds mixed solution, and by promoting the piston of lower ending opening, and the solution after will separating takes out respectively, improves the efficient of extraction and purifying compounds.

Description of drawings

Fig. 1 a is existing a kind of centrifuge tube structure;

Fig. 1 b is existing another kind of centrifuge tube structure;

Fig. 2 is the schematic diagram that the centrifuge tube of an embodiment carries out extracting operation.

The specific embodiment

Centrifuge tube of the present utility model comprises a body, and the top and bottom of this body are opening, and the opening of this body lower end can seal along the piston that inboard wall of tube body promotes by one, and the opening of this body upper end seals by a lid.Centrifuge tube of the present utility model is that the opening by the upper end of body enters mixed solution, and the different layers solution of the piston by the body lower end after will separating takes out (extruding) respectively.When in extracting operation, needing to place centrifuge or hand-held rocking, be that the lid of the upper end by body and the piston of body lower end carry out the sealing of body.

Consult shown in Figure 2ly, show the utility model with a preferred embodiment structure that realizes centrifuge tube of the present utility model below.

The centrifuge tube of this embodiment comprises a body 1, and the top of described body 1 has a caliber less than the tube connector 2 of body 1, and the upper end of this tube connector 2 is opening.This tube connector 2 can dock with common syringe 6, can extract by the syringe instrument like this be extracted and the liquid of purifying and the mixed liquor of extractant, and be pushed in the body 1 by the opening of tube connector 2 upper ends.Certain, the top of body 1 also can arrange this tube connector 2, gets final product and directly have an opening, by instruments such as funnel, guiding tube, syringes mixed liquor is imported in the body 1.

Preferably, the outer wall of described tube connector 2 has external screw thread, and the inwall of lid 3 has internal thread, the opening of tube connector 2 upper ends 21 is sealed with being threaded of tube connector 2 by lid 3.Natch, tube connector 2(or body 1 namely do not arrange the situation of tube connector 2) and lid 3 can adopt and be threaded to seal; For example adopt the lid 3 of Pi Saishi, directly utilize the skin plug elastic rubber and with tube connector 2(or body 1) upper end open seal.

Preferably, the piston 9 that body 1 lower end 12 arranges can comprise the piston valve 4 that is arranged at body 1 inwall and the piston mandril 5 that promotes this piston valve 4, and this piston mandril 5 and piston valve 4 are for removably connecting.When centrifuge tube carries out centrifuge operation or hand-held rocking, piston mandril 5 is removed, in finishing body 1 after the separating of upper solution 7 and lower floor solution 8, remove lid 3, again piston mandril 5 is inserted and be connected in piston valve 4, the piston valve 4 that promotes in bodys 1 by this piston mandril 5, and with upper solution 7 from tube connector 2(or body 1) upper end open take out (extruding), thereby fast and effeciently extract and purifying compounds.

Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in not breaking away from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.

Claims

1. centrifuge tube, it is characterized in that: comprise a body, the top and bottom of this body are opening, and the opening of this body lower end can seal along the piston that inboard wall of tube body promotes by one, and the opening of this body upper end seals by a lid.

2. centrifuge tube according to claim 1, it is characterized in that: described body top has a caliber less than the tube connector of body, and the upper end of this tube connector is opening.

3. centrifuge tube according to claim 2, it is characterized in that: the outer wall of described tube connector has external screw thread, and cover body has internal thread, the opening of tube connector upper end is sealed with being threaded of tube connector by lid.

4. according to claim 1 or 2 or 3 described centrifuge tubes, it is characterized in that: described piston comprises the piston valve that is arranged at inboard wall of tube body and the piston mandril that promotes this piston valve, and this piston mandril and piston valve are for removably connecting.