CN205446963U - Fixing device of liquid core wave guide - Google Patents
Fixing device of liquid core wave guide Download PDFInfo
- Publication number
- CN205446963U CN205446963U CN201620262759.1U CN201620262759U CN205446963U CN 205446963 U CN205446963 U CN 205446963U CN 201620262759 U CN201620262759 U CN 201620262759U CN 205446963 U CN205446963 U CN 205446963U
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- liquid core
- fixing device
- waveguide pipe
- core waveguide
- topping
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Abstract
The utility model relates to a fixing device of liquid core wave guide, fixing device includes: the fastener, the fastener has through -hole and external screw thread, and liquid core wave guide passes the through -hole, fixed module, fixed module includes fixed connection's portion of screwing and topping up portion to and place the foraminiferous elastomeric element in the wall recess outside the topping up portion in, screw the portion the inner wall have with the internal thread that outer thread to match closed, liquid core wave guide passes foraminiferous elastomeric element stretches into topping up portion, the difference is an element of a set in the pipe line diameter of liquid core wave guide and foraminiferous elastomeric element's aperture [ 0.5mm, 0.5mm ]. The utility model has the advantages of simple installation, wave guide do not have deformation, the leakproofness is good, the live time is long.
Description
Technical field
This utility model relates to liquid core waveguide pipe, particularly to the sealed fixing device of TeflonAF liquid core waveguide pipe line ports.
Background technology
TeflonAF liquid core waveguide pipe has the features such as gas permeability is good, refractive index ratio water is low, is widely used in the field such as spectral detection, degassing structure.The main material of liquid core waveguide pipe is four fluoropolymers, and this makes waveguide and various conventional viscose glue poor adhesion, and when the mode using viscose glue is installed, pipeline easily comes off from viscose glue and causes install failure.At present, frequently with mechanical presses mode, liquid core waveguide pipe is fixed installation, but there is following defect:
1, extrusion structure directly contacts with liquid core waveguide pipe, but liquid core waveguide pipe mechanical strength is poor, is easily caused waveguide and is deformed even closing on fixed position, thus cannot be continuing with；
2, elastomeric element is used to protect when mechanical presses; as Tygon pump line is enclosed within the fixed position of liquid core waveguide pipe; this pump line can be realized after external force crimp fixing the lossless sealing of liquid core waveguide pipe; but Tygon pump line is very sensitive to some reagent; Long Term Contact there will be hardening deforming phenomenon; need often to change, it is impossible to life-time service.
Utility model content
In order to solve the deficiency in above-mentioned prior art, this utility model provides that a kind of simple installation, waveguide be undeformed, good airproof performance, can the liquid core waveguide pipe fixing device of life-time service.
The purpose of this utility model is achieved through the following technical solutions:
A kind of fixing device of liquid core waveguide pipe, described fixing device includes:
Securing member, described securing member has through hole and external screw thread, and liquid core waveguide pipe passes described through hole；
Stuck-module, described stuck-module includes the portion that screws and the topping up portion of fixing connection, and it is placed in the apertured elastic parts in topping up portion outside wall surface groove, the described inwall screwing portion has the female thread matched with described external screw thread, liquid core waveguide pipe stretches into described topping up portion through described apertured elastic parts, difference ∈ [-0.5mm, 0.5mm] in the aperture of the pipeline diameter of liquid core waveguide pipe and apertured elastic parts.
According to above-mentioned fixing device, it is preferable that difference ∈ [-0.2mm, 0.2mm] in the aperture of the pipeline diameter of liquid core waveguide pipe and apertured elastic parts.
According to above-mentioned fixing device, alternatively, described apertured elastic parts are hole gasket.
According to above-mentioned fixing device, it is preferable that the material of described apertured elastic parts is polydimethylsiloxane.
According to above-mentioned fixing device, it is preferable that the pipeline diameter of liquid core waveguide pipe is more than the aperture of described apertured elastic parts.
According to above-mentioned fixing device, it is preferable that the through-hole aperture of described securing member is more than the diameter of liquid core waveguide pipe.
According to above-mentioned fixing device, alternatively, described securing member is hand-tight joint.
According to above-mentioned fixing device, it is preferable that described topping up portion is topping up chamber.
According to above-mentioned fixing device, it is preferable that described topping up chamber is provided with inlet.
Compared with prior art, this utility model has the beneficial effect that
1, this utility model realizes the fixed installation to liquid core waveguide pipe by the way of hand-tight joint screws with coordinating of screwing portion and then extrudes elastomeric pad, it is to avoid the deformation problems produced because of mechanical external force extruding, makes the waveguide keep pipeline unobstructed；
2, this utility model uses elastomeric polydimethylsiloxane pad, and it is indeformable that protection liquid core waveguide pipe inserts shim portions tube wall, simultaneously works as sealing protective effect；And polydimethylsiloxane pad has good chemical inertness, substantially prolongs useful life；
3, liquid core waveguide pipe fixing device simple installation of the present utility model, modularized design, it is easy to accomplish miniaturization is with integrated, it is simple to be connected with other detection devices based on liquid core waveguide pipe.
Accompanying drawing explanation
Fig. 1 is the sectional view of the liquid core waveguide pipe fixing device of this utility model embodiment 1.
Detailed description of the invention
Fig. 1 and following description describe optional embodiment of the present utility model with teaching those skilled in the art how to implement and to reproduce this utility model.In order to instruct technical solutions of the utility model, simplify or eliminated some conventional aspects.Those skilled in the art should understand that be derived from these embodiments modification or replace will be in the range of this utility model.Those skilled in the art should understand that following characteristics can combine to form multiple modification of the present utility model in every way.Thus, this utility model is not limited to following embodiment, and is only limited by claim and their equivalent.
Embodiment 1
Fig. 1 schematically illustrates the sectional view of the liquid core waveguide pipe fixing device of the present embodiment, as it is shown in figure 1, described fixing device includes:
Securing member 2, described securing member has through hole 21 and external screw thread 22, and liquid core waveguide pipe 1 is through described through hole 21；
Stuck-module 3, described stuck-module includes the portion that screws 31 and the topping up portion 32 of fixing connection, and it is placed in the apertured elastic parts 33 in topping up portion outside wall surface groove 321, the described inwall screwing portion 31 has the female thread (not shown) matched with described external screw thread, liquid core waveguide pipe 1 stretches into described topping up portion 32 through described apertured elastic parts 33, difference ∈ [-0.5mm, 0.5mm] in the aperture of the pipeline diameter of liquid core waveguide pipe and apertured elastic parts.
As preferably, difference ∈ [-0.2mm, 0.2mm] in the pipeline diameter of described liquid core waveguide pipe and the aperture of apertured elastic parts.
Securing member typically uses polyetheretherketonematerials materials, and hardness is relatively big, elastic low, for the ease of liquid core waveguide pipe is inserted securing member, therefore:
Further, the through-hole aperture of described securing member is more than the diameter of liquid core waveguide pipe.
In order to increase the sealing effectiveness of liquid core waveguide pipe line ports, therefore:
Further, the pipeline diameter of liquid core waveguide pipe is more than the aperture of described apertured elastic parts.
The installation process of liquid core waveguide pipe fixing device is as follows:
Liquid core waveguide pipe is inserted the through hole of securing member, and the female thread that securing member external screw thread screws portion by stuck-module passes apertured elastic parts to the direction precession of apertured elastic parts, the line ports of liquid core waveguide pipe；Screwing screw thread further, the end face of securing member extrudes elastomeric element with holes so that apertured elastic part distortion thus hold liquid core waveguide pipe tightly.
Advantage of this embodiment is that: by the way of securing member screws with coordinating of screwing portion and then extrudes elastomeric element, realize the fixed installation to liquid core waveguide pipe, it is to avoid the deformation problems that produces because of mechanical external force extruding；Liquid core waveguide pipe fixing device simple installation, modularized design simultaneously, it is simple to and the connection use of other devices.
Embodiment 2
The liquid core waveguide pipe fixing device according to embodiment 1 application examples in Raman detection field.In this application examples, securing member is hand-tight joint, and the perforate direction axis direction externally threaded with hand-tight joint of hand-tight joint inner via hole is parallel；The portion that screws containing the female thread that matches with hand-tight joint external screw thread and topping up portion are an overall fixed block, fixed block side is for screwing portion, opposite side is topping up chamber, and is provided with groove near the topping up cavity outer wall face screwing portion, for putting the polydimethylsiloxane pad of center drilling；Described topping up chamber is provided with inlet, it is simple to sample solution is full of described topping up chamber and then enters liquid core waveguide pipe.
In this application examples, use the polydimethylsiloxane pad that a diameter of 4.1 millimeters of the liquid core waveguide pipe insertion of diameter 0.41 millimeter, thickness are 2 millimeters and centre bore aperture is 0.4 millimeter, and then carry out liquid core waveguide pipe and be connected with the fixing of Raman detection system, carrying out sample detection afterwards on device after this structure, detection sample can be 10% ethanol, creatinine etc..After to sample solution continuous detecting 30 days, being pulled down by polydimethylsiloxane pad, record a diameter of 4.1 millimeters of the polydimethylsiloxane pad after use, thickness is 1.97 millimeters, it can thus be appreciated that polydimethylsiloxane pad chemical resistance is strong；Observe by the naked eye simultaneously and do not find at hand-tight joint screw thread, there is any sample solution seepage, illustrate that the Raman detection system after building can be effectively sealed protection to liquid core waveguide pipe.
Above-mentioned embodiment should not be construed as the restriction to this utility model protection domain.Of the present utility model it is crucial that: by the way of securing member screws with coordinating of screwing portion and then extrudes elastic component, realize the fixed installation to liquid core waveguide pipe.In the case of without departing from this utility model spirit, within any type of change making utility model all should fall into protection domain of the present utility model.
Claims (9)
1. the fixing device of a liquid core waveguide pipe, it is characterised in that: described fixing device includes:
Securing member, described securing member has through hole and external screw thread, and liquid core waveguide pipe passes described through hole；
Stuck-module, described stuck-module includes the portion that screws and the topping up portion of fixing connection, and it is placed in the apertured elastic parts in topping up portion outside wall surface groove, the described inwall screwing portion has the female thread matched with described external screw thread, liquid core waveguide pipe stretches into described topping up portion through described apertured elastic parts, difference ∈ [-0.5mm, 0.5mm] in the aperture of the pipeline diameter of liquid core waveguide pipe and apertured elastic parts.
Fixing device the most according to claim 1, it is characterised in that: difference ∈ [-0.2mm, 0.2mm] in the aperture of the pipeline diameter of liquid core waveguide pipe and apertured elastic parts.
Fixing device the most according to claim 1 and 2, it is characterised in that: described apertured elastic parts are hole gasket.
Fixing device the most according to claim 1 and 2, it is characterised in that: the material of described apertured elastic parts is polydimethylsiloxane.
Fixing device the most according to claim 1 and 2, it is characterised in that: the pipeline diameter of liquid core waveguide pipe is more than the aperture of described apertured elastic parts.
Fixing device the most according to claim 1, it is characterised in that: the through-hole aperture of described securing member is more than the diameter of liquid core waveguide pipe.
Fixing device the most according to claim 1, it is characterised in that: described securing member is hand-tight joint.
Fixing device the most according to claim 1, it is characterised in that: described topping up portion is topping up chamber.
Fixing device the most according to claim 8, it is characterised in that: described topping up chamber is provided with inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262759.1U CN205446963U (en) | 2016-03-31 | 2016-03-31 | Fixing device of liquid core wave guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262759.1U CN205446963U (en) | 2016-03-31 | 2016-03-31 | Fixing device of liquid core wave guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446963U true CN205446963U (en) | 2016-08-10 |
Family
ID=56608797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620262759.1U Active CN205446963U (en) | 2016-03-31 | 2016-03-31 | Fixing device of liquid core wave guide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205446963U (en) |
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2016
- 2016-03-31 CN CN201620262759.1U patent/CN205446963U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |