CN211836439U

CN211836439U - Extraction liquid-separating tube

Info

Publication number: CN211836439U
Application number: CN202020321886.0U
Authority: CN
Inventors: 卢兰香; 薛霞; 魏莉莉; 刘艳明; 公丕学; 丁一; 武传香; 王骏; 祝建华
Original assignee: Shandong Institute for Food and Drug Control
Current assignee: Shandong Institute for Food and Drug Control
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-11-03
Anticipated expiration: 2030-03-16

Abstract

The utility model belongs to the field of food detection laboratory equipment, in particular to an extraction liquid separating tube, which comprises a plurality of connecting seats and a plurality of extraction liquid separating tubes, wherein the connecting seats are fixedly arranged on an extraction liquid separating frame, the extraction liquid separating tubes comprise tube caps, tube bodies and joints, the upper ends of the tube bodies are screwed with the tube caps, the lower ends of the tube bodies are sealed and screwed with joints, and the joints are spliced with the connecting seats; the liquid separating pipe is internally provided with a core pipe which can move along the axial direction of the pipe body, the core pipe is longer than the length of the extraction liquid separating pipe, the upper end of the core pipe is clamped in the pipe cap, the lower end of the core pipe penetrates through the joint and the connecting seat, and the part of the core pipe extending out of the connecting seat is provided with a switch knob. The extraction liquid-distributing core tube can be used for taking the sample extraction solution of the corresponding layer as required, and is suitable for repeated extraction for many times.

Description

Extraction liquid-separating tube

Technical Field

The utility model belongs to food detection laboratory paraphernalia field specifically is an extraction divides liquid pipe.

Background

Liquid-liquid extraction is commonly used for separating a substance to be detected from a matrix in a sample, and the purposes of purifying the substance to be detected and eliminating interfering substances are achieved by separating the sample between two incompatible liquids. The food detection laboratory mainly uses a separating funnel to carry out liquid-liquid extraction to achieve the purposes of separation and purification. However, the separating funnel has a large volume, is mostly used for extracting more than one hundred milliliters of extraction solution, and is not suitable for extracting small volumes of extraction solution of dozens to dozens of milliliters; and when the separating funnel is used for repeated extraction for many times, the sample extracting solution needs to be poured repeatedly, so that target object loss is easily caused.

Disclosure of Invention

In order to solve the problem, the utility model provides an extraction divides liquid pipe can realize little volume extraction, and it is convenient to get liquid. The utility model adopts the technical scheme as follows:

an extraction liquid dividing pipe comprises a plurality of connecting seats and a plurality of extraction liquid dividing pipes, wherein the connecting seats are fixedly arranged on an extraction liquid dividing frame, each extraction liquid dividing pipe comprises a pipe cap, a pipe body and a joint, the upper end of the pipe body is in threaded connection with the pipe cap, the lower end of the pipe body is in sealed threaded connection with the joint, and the joint is in inserted connection with the connecting seats; the liquid separating pipe is internally provided with a core pipe which can move along the axial direction of the pipe body, the core pipe is longer than the length of the extraction liquid separating pipe, the upper end of the core pipe is clamped in the pipe cap, the lower end of the core pipe penetrates through the joint and the connecting seat, and the part of the core pipe extending out of the connecting seat is provided with a switch knob.

According to the extraction liquid-separating tube, the fastening knob is arranged on the side face of the connecting seat, and the core tube penetrates through the connecting seat and then is pressed tightly by the fastening knob.

Above-mentioned extraction divides the liquid pipe, it has the through-hole with heart pipe complex to connect to open in, be equipped with at least one in the through-hole and heart pipe complex sealing washer.

Above-mentioned extraction divides the liquid pipe, the sealing washer is equipped with two, connect the side and be equipped with the bleeder vent.

The utility model has the advantages that: the extraction liquid-distributing core tube can be used for taking the sample extraction solution of the corresponding layer as required, and is suitable for repeated extraction for many times. The extraction divides liquid pipe and extraction to divide the cooperation of pegging graft of liquid frame, and the extraction divides the liquid pipe to be little volume pipe, can realize little volume extraction and divide the liquid, reduces target loss and environmental pollution.

Drawings

FIG. 1 is a schematic diagram of an extraction and separation tube structure according to an embodiment of the invention;

fig. 2 is a schematic sectional view of an extraction liquid-separating tube according to an embodiment of the present invention.

Fig. 3 is a schematic view of a connection structure of an extraction liquid separating tube and an extraction liquid separating rack according to an embodiment of the invention.

In the figure: 6 is an extraction liquid separating frame, 61 is a connecting seat, 62 is a fastening knob, 63 is a handle, 64 is a supporting leg, 7 is an extraction liquid separating tube, 71 is a tube cap, 72 is a tube body, 73 is a joint, 74 is a core tube, 75 is a switch knob, 76 is a sealing ring, and 77 is an air vent.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

An extraction liquid separating tube comprises a plurality of connecting seats 61 and a plurality of extraction liquid separating tubes 7, wherein the connecting seats 61 are fixedly arranged on an extraction liquid separating frame 6, each extraction liquid separating tube 7 comprises a tube cap 71, a tube body 72 and a connector 73, the upper end of the tube body 72 is screwed with the tube cap 71, the lower end of the tube body 72 is sealed and screwed with the connector 73, and the connector 73 is spliced with the connecting seats 61; a core tube 74 which can move along the axial direction of the tube body 72 is arranged in the liquid separating tube 7, the core tube 74 is longer than the length of the extraction liquid separating tube 7, the upper end of the core tube 74 is clamped in the tube cap 71, the lower end of the core tube 74 penetrates through the joint 73 and the connecting seat 61, and a switch knob 75 is arranged on the part of the core tube 74 extending out of the connecting seat 61. The switch knob 75 can adopt a commonly used knob structure in a separating funnel, and is convenient to use.

In the extraction liquid-separating tube, a fastening knob 62 is arranged on the side surface of the connecting seat 61, and the core tube 74 is pressed by the fastening knob 62 after penetrating through the connecting seat 61. The fastening knob 62 may be a screw member, the pressing end thereof may be configured to be semicircular, and the through hole in the connecting seat 61 may be an irregular hole to cooperate with the pressing end of the fastening knob 62 to hold the core tube 74 tightly, so as to prevent the core tube 74 from automatically sliding off. The upper end of the central tube 74 is clamped inside the tube cap 71 during the oscillation process, so that the sample is prevented from entering. When liquid is taken, the fastening knob 62 is unscrewed, the switch knob 75 is loosened, the core tube 74 is slowly pulled down to take liquid from the upper layer to the lower layer, and the sample extracting solution of the corresponding layer can be taken as required. Greatly facilitates the extraction and liquid separation of small volume. The upper part of the extraction liquid-separating frame 6 is provided with a handle bar 63, the lower part is provided with a supporting leg 64, and the handle bar 63 is convenient to hold and take.

In the extraction liquid-separating tube, a through hole matched with the core tube 74 is formed in the joint 73, and at least one sealing ring 76 matched with the core tube 74 is arranged in the through hole. Referring to fig. 2, two sealing rings 76 are disposed up and down in the through hole, and a sealing ring is disposed at the joint of the nipple 73 and the tube body 72.

In the extraction liquid-separating tube, the number of the sealing rings 76 is two, the side surface of the joint 73 is provided with the air holes 77, and with reference to fig. 2, the air holes 77 are formed in the side wall of the joint 73 between the two sealing rings 76, so that the resistance when the stem tube 74 is pulled can be reduced.

Claims

1. An extraction liquid-separating tube is characterized in that: the device comprises a plurality of connecting seats (61) and a plurality of extraction liquid separating pipes (7), wherein the connecting seats (61) are fixedly arranged on an extraction liquid separating frame (6), each extraction liquid separating pipe (7) comprises a pipe cap (71), a pipe body (72) and a connector (73), the upper end of the pipe body (72) is in threaded connection with the pipe cap (71), the lower end of the pipe body is in sealed threaded connection with the connector (73), and the connector (73) is spliced with the connecting seats (61); the liquid separating pipe (7) is internally provided with a core pipe (74) which can move along the axial direction of the pipe body (72), the core pipe (74) is longer than the length of the extraction liquid separating pipe (7), the upper end of the core pipe (74) is clamped in the pipe cap (71), the lower end of the core pipe (74) penetrates through the connector (73) and the connecting seat (61), and the part of the core pipe (74) extending out of the connecting seat (61) is provided with a switch knob (75).

2. The extractor liquid separator tube of claim 1, wherein: the side surface of the connecting seat (61) is provided with a fastening knob (62), and the core tube (74) penetrates through the connecting seat (61) and then is pressed by the fastening knob (62).

3. The extractor liquid separator tube of claim 1, wherein: a through hole matched with the core tube (74) is formed in the joint (73), and at least one sealing ring (76) matched with the core tube (74) is arranged in the through hole.

4. The extractor liquid separator of claim 3 wherein: the number of the sealing rings (76) is two, and the side surface of the joint (73) is provided with an air hole (77).