CN203147138U

CN203147138U - Capillary connector

Info

Publication number: CN203147138U
Application number: CN 201320035447
Authority: CN
Inventors: 郭文鹏; 蔡志明
Original assignee: Shenzhen Second Peoples Hospital
Current assignee: Shenzhen Second Peoples Hospital
Priority date: 2013-01-23
Filing date: 2013-01-23
Publication date: 2013-08-21
Anticipated expiration: 2023-01-23

Abstract

The utility model provides a capillary connector which comprises a first cone-shaped tube, a second cone-shaped tube and a heat-shrink tube, wherein the first cone-shaped tube and the second cone-shaped tube are made of plastics and are identical in structures. The first cone-shaped tube and second cone-shaped tube are provided with small ends and large ends, the small end of the first cone-shaped tube is communicated with the small end of the second cone-shaped tube in a seamless butting joint mode, the large end of the first cone-shaped tube and the large end of the second cone-shaped tube are used for being connected with capillaries respectively, the heat-shrink tube is sleeved at a central butting joint position and performs thermal shrinkage on the outer walls of the first cone-shaped tube and the second cone-shaped tube, and the capillary connector can be integrally molded. The capillary connector is simple in machining process and low in production cost, utilizes soft contact of the plastics and the capillaries, and reduces fracture probability of the capillaries, thereby improving blocking condition of the connector.

Description

A kind of capillary tube connector

Technical field

The utility model relates to a kind of capillary tube connector.

Background technique

Capillary tube is commonly referred to as the tubule that internal diameter is equal to or less than 1 millimeter, the thin event as hair that has because of its caliber claims capillary tube, be widely used in fields such as medical science and buildings, also be varied from the structure to the material and be used for to connect connector capillaceous, by retrieval Chinese patent application case, with " capillary tube " and " connection " be keyword, retrieving application number is 200910059327.5, denomination of invention is the application documents of quartz capillary chromatographic column connection method and device, this application file provides a kind of inwall through chemically treated capillary chromatographic column connection set, this device adopt an internal diameter greater than two quartz capillary chromatographic column external diameters or external diameter less than two quartz capillary chromatographic column internal diameters, length is one section quartz capillary column of 10mm ~ 100mm, its inwall is handled through chemical inertness, the end of two root chromatogram columns is inserted or is inserted in from two ends of connection set respectively, in the butt joint of the mid point of connection set, it is sealed at both ends and cling chromatographic column to apply connection set with high-temp glue.Though the connection set dead volume among the present invention is zero and to not absorption of sample component, but, since adopt quartzy material as connection set, the processing technology complexity, and cost is higher, and the opening end of connector is thinner, be not easy capillary tube inserted and its material hardness bigger, when contacting with capillary tube, easily with the capillary tube fragmentation, thereby cause connector to stop up, can't normally use.

As Fig. 1 and Fig. 2, the existing capillary tube connector 1` that this entity provides for Sigma aldrich company, this connector is one-body molded, and material is glass, and its inside has a cavity volume, two ends 11` and the 13` of cavity volume are respectively applied to be connected capillary tube, the capillary tube at two ends is in the latus rectum 12` place butt joint of cavity volume middle part, because the restriction of capillary tube 1` external diameter, the diameter of its middle part latus rectum 12` can't enlarge size, existing processing technology is comparatively complicated, cost is higher, and the open end at entity two ends is insertion mouth capillaceous, as shown in Figure 2, it is thinner that this inserts mouth, be not easy capillary tube is inserted, and the material hardness of glass is bigger, belong to rigid contact with intercapillary the contact, be easy to cause fragmentation capillaceous, simultaneously as can be known, middle linkage section is thinner, thereby also can cause the obstruction of connector, cause the capillary tube connector to be scrapped.

The model utility content

The purpose of this utility model is to provide a kind of capillary tube connector, be intended to solve existing connector processing technology complexity, cost is higher, thinner with capillary tube connecting end opening, be not easy capillary tube is inserted, and the material hardness of connector is bigger, when contacting with capillary tube, easily with the capillary tube fragmentation, thereby cause the connector blocking problem.

For solving the problems of the technologies described above, the utility model is achieved in that a kind of capillary tube connector, comprising: first conical pipe that plastic material is made and second conical pipe, the small end slitless connection of the small end of described first conical pipe and described second conical pipe is communicated with.

Particularly, the end surface shape of the small end of the small end of described first conical pipe and described second conical pipe and measure-alike and both the junction for the gummed be tightly connected.

Further, also comprise a heat-shrink tube, described heat-shrink tube is sheathed on the outer side wall of small end of the small end of described first conical pipe and described second conical pipe and sealing.

Perhaps, further, described first conical pipe and described second conical pipe are one-body molded.

Preferably, the tapering of described first conical pipe and/or described second conical pipe is 5 ° ~ 10 °.

Preferably, the small end internal diameter of described first conical pipe is 100 ~ 200 microns, and holding internal diameter greatly is 350 ~ 2000 microns.

Preferably, the small end internal diameter of described second conical pipe is 100 ~ 200 microns, and holding internal diameter greatly is 350 ~ 2000 microns.

Preferably, the small end internal diameter of described first conical pipe is 100 ~ 200 microns, and holding internal diameter greatly is 350 ~ 2000 microns; The small end internal diameter of described second conical pipe is 100 ~ 200 microns, and holding internal diameter greatly is 350 ~ 2000 microns.

Compared with prior art, the capillary tube connector that the utility model provides because it adopts cone structure, increases the opening end that is connected with capillary tube, capillary tube is more prone to be inserted in the connector, utilize plastic material, realize and soft contact the capillaceous, reduce the probability of breaking capillaceous, and overall structure is simple, processing is convenient, is satisfying under the prerequisite of function of use, reduces buying and user cost greatly.

Description of drawings

Fig. 1 is the structural representation of the capillary tube connector that provides of prior art;

Fig. 2 is the cut-away illustration along A-A direction among Fig. 1;

Fig. 3 is the perspective view of the capillary tube connector that provides of the utility model;

Fig. 4 is the structural representation of the capillary tube connector that provides of the utility model;

Fig. 5 is the cut-away illustration along B-B direction among Fig. 4;

Fig. 6 is the structural representation of capillary tube connector first conical pipe that provides of the utility model;

Fig. 7 is the structural representation of capillary tube connector second conical pipe that provides of the utility model.

Embodiment

In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

The utility model provides a kind of capillary tube connector, comprise first conical pipe and second conical pipe and heat-shrink tube that plastics are made, first conical pipe and second conical pipe respectively have small end and big end, the small end of first conical pipe is connected with the small end slitless connection of second conical pipe, the big end of first conical pipe is respectively applied to be connected capillary tube with the big end of second conical pipe, heat-shrink tube is linked in the slitless connection place, pyrocondensation is in the outer wall of first conical pipe and second conical pipe, and above-mentioned capillary tube connector also can be one-body molded.

In the utility model, because first conical pipe is communicated with the second conical pipe slitless connection, adopt sealer to be cured gummed at seam crossing, and heat-shrink tube is sleeved on the link position place seals, simple in structure, need not complicated processing technology, and utilize plastic materials and soft contact the capillaceous, reduce the capillary break-up probability, thereby improve the situation that connector stops up.

Below in conjunction with concrete accompanying drawing realization of the present utility model is described in detail.

Shown in Fig. 3 to 7, a preferred embodiment that provides for the utility model.

See also Fig. 3 to Fig. 7, above-mentioned capillary tube connector 1 comprises first conical pipe 11 and second conical pipe 12 and heat-shrink tube 13 that plastics are made, first conical pipe 1 has small end 110 and big end 120, second conical pipe 12 has small end 210 and big end 220, wherein, the small end 110 of first conical pipe 11 is connected at center joint 14 with the small end 210 of second conical pipe 12, and the big end 120 of first conical pipe 11 and the big end 220 of second conical pipe 12 are respectively applied to be connected the capillary tube at two ends.14 places are docked at heat-shrink tube 13 centers of being linked in, and under the effect of thermal source, pyrocondensation is on the outer wall of first conical pipe 11 and second conical pipe 12.

See also Fig. 5, the capillary tube that insert at two ends contacts at the center of capillary tube connector 1 joint 14 places, adopt curing glue that center joint 14 is glued together, note, will not solidify the inner radius that glue is applied to center joint 14, because inwall is residual curing glue is arranged, cause connector to stop up, can't normally use.Can certainly adopt other Placements, for example clamping or mode such as be threaded.

Wherein, in the present embodiment, first conical pipe 11 is all identical with second conical pipe, 12 structures and geomery, therefore can guarantee, docks 14 places at the center, and first conical pipe 11 is connected the back with second conical pipe 12 seamless, and the joint is smooth.

In the present embodiment, adopt 13 pairs of center joint 14 surfaces of heat-shrink tube to seal, the liquid in the capillary tube is difficult for revealing like this, thereby experimental analysis is not subjected to the influence of external substance, guarantees the accuracy of experimental result.

Certainly, under the situation that processing conditions allows, capillary tube connector 1 can be one-body molded, guarantees the sealing that connects more.

See also Fig. 6 and Fig. 7, the tapering of two conical pipes of tapering of described first conical pipe 11, described second conical pipe 12 can be identical, also can be different, it is determined by the caliber capillaceous that participates in experimental analysis and analytic target, tapering is difficult for excessive, span is preferably 5 ° ~ 10 °, otherwise the effective length that easily causes capillary tube to embed in the connector 1 is too short, cause part to contact with air, cause the inaccurate of experimental result, the value of tapering guarantees that as far as possible capillary tube inserts the effective length in the connector; In the present embodiment, the tapering of first conical pipe 11 and second conical pipe 12 is all selected C=1:10 for use.

The span of small end 110 internal diameters of first conical pipe 11 is 100 ~ 200 microns, and the span of holding 120 internal diameters greatly is 350 ~ 2000 microns, particularly, in the present embodiment, small end 110 inner diameter d of choosing are 200 microns, and holding 120 inner diameter D greatly is 500, according to the tapering formula

As can be known,

Wherein L is cone length.

The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. a capillary tube connector is characterized in that, comprising: first conical pipe that plastic material is made and second conical pipe, the small end slitless connection of the small end of described first conical pipe and described second conical pipe is communicated with.

2. capillary tube connector as claimed in claim 1 is characterized in that, the end surface shape of the small end of the small end of described first conical pipe and described second conical pipe and measure-alike and both the junction for the gummed be tightly connected.

3. capillary tube connector as claimed in claim 2 is characterized in that, also comprises a heat-shrink tube, and described heat-shrink tube is sheathed on the outer side wall of small end of the small end of described first conical pipe and described second conical pipe and sealing.

4. capillary tube connector as claimed in claim 1 is characterized in that, described first conical pipe and described second conical pipe are one-body molded.

5. as each described capillary tube connector of claim 1 to 4, it is characterized in that the tapering of described first conical pipe and/or described second conical pipe is 5 ° ~ 10 °.

6. a kind of capillary tube connector as claimed in claim 5 is characterized in that, the small end internal diameter of described first conical pipe is 100 ~ 200 microns, and holding internal diameter greatly is 350 ~ 2000 microns.

7. a kind of capillary tube connector as claimed in claim 5 is characterized in that, the small end internal diameter of described second conical pipe is 100 ~ 200 microns, and holding internal diameter greatly is 350 ~ 2000 microns.

8. a kind of capillary tube connector as claimed in claim 5 is characterized in that, the small end internal diameter of described first conical pipe is 100 ~ 200 microns, and holding internal diameter greatly is 350 ~ 2000 microns; The small end internal diameter of described second conical pipe is 100 ~ 200 microns, and holding internal diameter greatly is 350 ~ 2000 microns.