CN208131313U - A kind of nozzle of evaporative light scattering detector - Google Patents
A kind of nozzle of evaporative light scattering detector Download PDFInfo
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- CN208131313U CN208131313U CN201820467146.0U CN201820467146U CN208131313U CN 208131313 U CN208131313 U CN 208131313U CN 201820467146 U CN201820467146 U CN 201820467146U CN 208131313 U CN208131313 U CN 208131313U
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- nozzle
- main body
- nozzle needle
- shock
- nozzle plate
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Abstract
The utility model discloses a kind of nozzles of evaporative light scattering detector,The main body of step-like through-hole is equipped with including middle part,Main body one end is equipped with nozzle plate,Sealing ring is equipped at faying face between main body and nozzle plate,Nozzle plate is equipped with spray orifice,Middle part is embedded with shock-absorbing sleeve in main body,It is equipped in shock-absorbing sleeve coaxial with through-hole in main body,It is passed through for nozzle needle and provides the supported hole of support to nozzle needle,Clamping pad is equipped with far from the side of nozzle plate in shock-absorbing sleeve in main body,Sealing support sleeve is equipped in clamping pad,Nozzle needle is equipped in sealing support sleeve,The other end is equipped with the eluent liquid inlet joint of pushing and pressing clamping pad in main body,Liquid inlet joint, which is located in main intracorporal one end, is embedded with connector lasso,Nozzle needle and sealing support sleeve one end are pierced by connector lasso,The straight-through of two penetrating high speed atomisation gas is symmetrically arranged in main body,The nozzle needle other end protrudes into spray orifice,There is the gap sprayed for atomization gas between nozzle needle and spray orifice wall.
Description
Technical field
The utility model relates to a kind of nozzles of evaporative light scattering detector.
Background technique
The testing principle of evaporative light scattering detector is to be atomized column eluent to form aerosol first, is then being heated
Drift tube in solvent is evaporated, last remaining fixedness particles of solute is detected in scattering measuring pond.Its mistake
Journey includes the following steps：
1, it is atomized：Liquid mobile phase is transformed into tiny drop under the action of nebulizer gas pressure in spray chamber, to make
Solvent is easier to evaporate.The size and uniformity of drop are the sensitivity for guaranteeing detector and the key factor of repeatability.
Evaporative light scattering detector passes through the accurate control to air pressure and temperature, it is ensured that in spray chamber formed one compared with
Narrow droplets size distribution, temperature required for evaporating drop substantially reduce.
2, it evaporates：Drop is transported to drift tube from spray chamber and is evaporated by carrier gas.In drift tube, solvent is removed,
Leave the droplet of particle or pure solute.Evaporative light scattering detector uses low-temperature evaporation mode, maintains the uniformity of particle, right
Half volatile substance and thermographic compound equally have preferable sensitivity.
3, it detects：Light source enters light detection pond after using laser, particles of solute to come out from drift tube, and passes through laser light
Beam.It is collected by the light that particles of solute scatters by photomultiplier tube.Particles of solute is carried when entering light detection pond by auxiliary
Gas is encapsulated, and is avoided dispersion of the solute in detection cell and is deposited on wall, greatly enhances detection sensitivity and greatly drops
The pollution of low detection pool surface.
Nozzle is a most important component part of evaporative light scattering detector, and effect is by the liquid phase of the front end ELSD
The eluent of chromatographic system outflow carries out atomization and forms aerosol.The granularity of aerosol, the uniformity and aerosol spraying
Direction, speed are determined by nozzle.
Existing nozzle is as shown in Figure 1, liquid chromatographic system isolated eluent in front end enters spray by connector 6
Mouth flows to always the needle outlets in the aperture on the top of nozzle body 1 along the diameter aperture inside nozzle needle 4；The gas of atomization
Body (air or nitrogen) is entered inside nozzle body 1 by pass-through interface 7, forms the high pressure of 3~4bar；The outlet of nozzle needle 4
The close gap that spacing only has 0.02mm~0.04mm, high pressure gas are formed in the top export of nozzle body 1, between them
Body is sprayed from this gap, and eluent is flowed out inside nozzle needle 4, is atomized in this position eluent by high pressure gas, is formed super
Velocity of sound aerosol stream, ejects from the top export of nozzle body 1.Clamping pad 2 and connector lasso 3 are all sealings, are protected
It demonstrate,proves nozzle body 1 and nozzle needle forms the air-tightness of cavity, so that the spray-hole on nozzle body top becomes this atomising device
Sole outlet.
This structure makes the nozzle needle in nozzle have vibration at work, but the slight vibration of nozzle needle can all cause instrument
The noise of rear end detector.
Utility model content
Technical problem to be solved in the utility model is：A kind of evaporative light scattering detector that atomizing effect is good is provided
Nozzle.
In order to solve the above technical problems, technical solution used by the utility model is：The spray of evaporative light scattering detector
Mouth is equipped with the main body of step-like through-hole including middle part, and main body one end is equipped with nozzle plate, at the faying face between main body and nozzle plate
Equipped with sealing ring, nozzle plate is equipped with spray orifice, and middle part is embedded with shock-absorbing sleeve in main body, is equipped in shock-absorbing sleeve same with through-hole in main body
Axis, pass through for nozzle needle and provide the supported hole of support to nozzle needle, be equipped with pressure far from the side of nozzle plate in shock-absorbing sleeve in main body
It is tight to pad, it is equipped with sealing support sleeve in clamping pad, seals in support sleeve and is equipped with nozzle needle, the other end, which is equipped with, in main body pushes against clamping pad
Eluent liquid inlet joint, liquid inlet joint, which is located in main intracorporal one end, is embedded with connector lasso, nozzle needle and sealing support sleeve one
End is pierced by connector lasso, and the straight-through of two penetrating high speed atomisation gas is symmetrically arranged in main body, and the nozzle needle other end protrudes into spray orifice,
There is the gap sprayed for atomization gas between nozzle needle and spray orifice wall.
As a preferred solution, the axis of the straight-through air inlet axially bored line and main body inner via hole is in 30-60 ° of folder
Angle.
As a preferred solution, the shock-absorbing sleeve is in inclined to nozzle needle along jet direction close to one end of nozzle plate
Cone cell.
As a preferred solution, the shock-absorbing sleeve is located at straight-through air inlet exit close to one end of nozzle plate.
As a preferred solution, the guidance conical surface is equipped on the inside of the nozzle plate at spray orifice mouth.
The utility model has the beneficial effects that：Since middle part is embedded with shock-absorbing sleeve in main body, it is equipped in shock-absorbing sleeve and main body
Middle through-hole it is coaxial, pass through for nozzle needle and provide the supported hole of support to nozzle needle, in main body in shock-absorbing sleeve far from nozzle plate one
Side is equipped with clamping pad, and sealing support sleeve is equipped in clamping pad, seals in support sleeve and is equipped with nozzle needle, the other end is equipped with and pushes away in main body
Eluent liquid inlet joint to clamping pad, liquid inlet joint, which is located in main intracorporal one end, is embedded with connector lasso, nozzle needle and sealing
Support sleeve one end is pierced by connector lasso, and the nozzle needle other end protrudes into spray orifice, has between nozzle needle and spray orifice wall and sprays for atomization gas
Gap be greatly improved its directionality, nozzle needle and nozzle nozzle needle at a two fixed rock-steady structure
The concentricity of main body gets a promotion, and reduces to the processing request of clamping pad and nozzle body.
Since main body one end is equipped with nozzle plate, it is equipped with sealing ring at the faying face between main body and nozzle plate, so that nozzle
Plate can be assembled after other parts assemble, and be assemblied under high power industrial microscope and completed, micro- in high power industry
The central small hole for observing nozzle plate under mirror finely tunes the position of nozzle plate, makes itself and nozzle needle wherein there is the nozzle needle assembled
Outlet is coaxial.Design in this way can be such that the yield rate of processing greatly improves, almost can achieve 100%, each nozzle
It can be finely adjusted assembly in this way.The consistency of nozzle can also be greatly improved.
Due to being symmetrically arranged with the straight-through of two penetrating high speed atomisation gas in main body, from two sides air inlet simultaneously, to greatest extent
Ground reduces disturbance of the air inlet to nozzle needle, makes to be atomized stable and uniform.
Angle due to leading directly to air inlet becomes 30-60 ゜ air inlet from vertical air inlet, and such admission pressure is in nozzle needle radial direction
Component also further decreases, and greatly reduces the vibration of nozzle needle, makes atomization more stable and uniform.
It, can be to being passed through in straight-through since shock-absorbing sleeve is in along jet direction to the inclined cone cell of nozzle needle close to one end of nozzle plate
Gas play guiding function, reduce the impact to nozzle needle, make atomization more stable and uniform.
Since shock-absorbing sleeve is located at straight-through air inlet exit close to one end of nozzle plate so that two it is straight-through in be passed through
Gas mutually will not impact to form flow-disturbing, to reduce nozzle needle vibration, also maintain the atomization gas being passed through in straight-through as far as possible
The speed of body, the atomizing effect made are more preferable.
Since the guidance conical surface is equipped on the inside of nozzle plate at spray orifice mouth, so that the airflow obstruction gone out from spray orifice is smaller, from
And improve atomizing effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of original nozzle.
Fig. 2 is the structural schematic diagram of the utility model.
In Fig. 2：1. 2. clamping pad of main body, 3. connector lasso, 4. nozzle needle 5. seals straight-through 8. spray of 6. liquid inlet joint 7. of support sleeve
9. shock-reducing sleeve of mouth plate, 10. sealing ring.
Specific embodiment
With reference to the accompanying drawing, the specific embodiment of the utility model is described in detail.
As shown in Fig. 2, the nozzle of evaporative light scattering detector, the main body 1 of step-like through-hole, main body 1 are equipped with including middle part
One end is equipped with nozzle plate 8, and sealing ring 10 is equipped at the faying face between main body 1 and nozzle plate 8, and nozzle plate 8 is equipped with spray orifice, spray
8 inside of mouth plate is equipped with the guidance conical surface at spray orifice mouth.
Middle part is embedded with shock-absorbing sleeve 9 in main body 1, be equipped in shock-absorbing sleeve 9 with through-hole in main body 1 it is coaxial, passed through for nozzle needle
And the supported hole of support is provided to nozzle needle.
It is equipped with clamping pad 1 far from the side of nozzle plate 8 in shock-absorbing sleeve 9 in main body 1, sealing support sleeve is equipped in clamping pad 1
5, it seals in support sleeve 5 and is equipped with nozzle needle 4, the other end is equipped with the eluent liquid inlet joint 6 of pushing and pressing clamping pad 2, feed liquor in main body 1
Connector lasso 3 is embedded in one end that connector 6 is located in main body 1, nozzle needle 4 and sealing 5 one end of support sleeve are pierced by connector lasso 3.
4 other end of nozzle needle protrudes into spray orifice, has the gap sprayed for atomization gas between nozzle needle 4 and spray orifice wall.
It is symmetrically arranged with straight-through the 7 of two penetrating high speed atomisation gas in main body 1, the straight-through 7 air inlet axially bored line and master
The axis of 1 inner via hole of body is in 45 ° of angle.Shock-absorbing sleeve 9 is located at straight-through 7 air inlet exit close to one end of nozzle plate 8, and
In along jet direction to the inclined cone cell of nozzle needle 4.
The principles and effects of the invention, and the implementation that part uses only is illustrated in the above embodiments
Example, rather than limits the present invention；It should be pointed out that for those of ordinary skill in the art, not departing from this hair
Under the premise of bright concept, various modifications and improvements can be made, and these are all within the protection scope of the present invention.
Claims (5)
1. the nozzle of evaporative light scattering detector, the main body of step-like through-hole is equipped with including middle part, main body one end is equipped with nozzle
Plate, sealing ring is equipped at the faying face between main body and nozzle plate, and nozzle plate is equipped with spray orifice, it is characterised in that：In the main body
Middle part is embedded with shock-absorbing sleeve, be equipped in shock-absorbing sleeve with through-hole in main body it is coaxial, passed through for nozzle needle and nozzle needle provided and support
Supported hole is equipped with clamping pad far from the side of nozzle plate in shock-absorbing sleeve in main body, sealing support sleeve, sealing branch is equipped in clamping pad
Nozzle needle is equipped in support set, the other end is equipped with the eluent liquid inlet joint of pushing and pressing clamping pad in main body, and liquid inlet joint is located at main body
Connector lasso is embedded in interior one end, nozzle needle and sealing support sleeve one end are pierced by connector lasso, two are symmetrically arranged in main body
The straight-through of high speed atomisation gas is sprayed into, the nozzle needle other end protrudes into spray orifice, has between nozzle needle and spray orifice wall and sprays for atomization gas
Gap.
2. the nozzle of evaporative light scattering detector as described in claim 1, it is characterised in that：The straight-through air inlet axially bored line
Axis with main body inner via hole is in 30-60 ° of angle.
3. the nozzle of evaporative light scattering detector as claimed in claim 2, it is characterised in that：The shock-absorbing sleeve is close to nozzle plate
One end be in along jet direction to the inclined cone cell of nozzle needle.
4. the nozzle of evaporative light scattering detector as claimed in claim 3, it is characterised in that：The shock-absorbing sleeve is close to nozzle plate
One end be located at straight-through air inlet exit.
5. the nozzle of evaporative light scattering detector as claimed in claim 4, it is characterised in that：In spray orifice on the inside of the nozzle plate
The guidance conical surface is equipped at mouthful.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294165 | 2018-03-02 | ||
| CN2018202941658 | 2018-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208131313U true CN208131313U (en) | 2018-11-23 |
Family
ID=64291097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820467146.0U Active CN208131313U (en) | 2018-03-02 | 2018-03-30 | A kind of nozzle of evaporative light scattering detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208131313U (en) |
-
2018
- 2018-03-30 CN CN201820467146.0U patent/CN208131313U/en active Active
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