CN108187938A - A kind of nozzle of evaporative light scattering detector - Google Patents
A kind of nozzle of evaporative light scattering detector Download PDFInfo
- Publication number
- CN108187938A CN108187938A CN201810293033.8A CN201810293033A CN108187938A CN 108187938 A CN108187938 A CN 108187938A CN 201810293033 A CN201810293033 A CN 201810293033A CN 108187938 A CN108187938 A CN 108187938A
- Authority
- CN
- China
- Prior art keywords
- main body
- nozzle
- nozzle needle
- shock
- nozzle plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000105 evaporative light scattering detection Methods 0.000 title claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000000889 atomisation Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000003480 eluent Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 6
- 239000000443 aerosol Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006199 nebulizer Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
- B05B7/0475—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the peripheral gas flow towards the central liquid flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
- B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
- B05B7/267—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device the liquid and the gas being both under pressure
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a kind of nozzles of the good evaporative light scattering detector of atomizing effect,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,The supported hole of support is passed through and nozzle needle provided for nozzle needle,In main body clamping pad is equipped in side of the shock-absorbing sleeve far from nozzle plate,Sealing supporting sleeve is equipped in clamping pad,Nozzle needle is equipped in sealing supporting sleeve,The other end is equipped with the eluent liquid inlet joint of pushing and pressing clamping pad in main body,Connector lasso is embedded in one end that liquid inlet joint is located in main body,Nozzle needle and sealing supporting sleeve one end are pierced by connector lasso,Two are arranged in main body and sprays into the straight-through of high speed atomisation gas,The nozzle needle other end is stretched into spray orifice,There is the gap sprayed for atomization gas between nozzle needle and spray orifice wall.
Description
Technical field
The present invention relates to a kind of nozzles of evaporative light scattering detector.
Background technology
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 by evaporation of the solvent, last remaining fixedness particles of solute is detected in scattering measuring pond.Its mistake
Journey includes the following steps：
1st, it is atomized：Liquid mobile phase is transformed into tiny drop under the action of nebulizer gas pressure in spray chamber, so as to make
Solvent is easier to evaporate.An important factor for size and uniformity of drop are sensitivity and the repeatability for ensureing detector.
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 makes drop evaporate required temperature and substantially reduces.
2nd, 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 pattern, maintains the uniformity of particle, right
Half volatile substance and thermographic compound equally have preferable sensitivity.
3rd, it detects：Light source uses laser, particles of solute to enter light detection pond, and pass through laser light after being come out from drift tube
Beam.It is collected by the light that particles of solute scatters by photomultiplier.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 ELSD front ends
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 enters spray as shown in Figure 1, liquid chromatographic system isolated eluent in front end passes through connector 6
Mouth, the needle outlets in the aperture on the top for flowing to nozzle body 1 always along the diameter aperture inside nozzle needle 4；The gas of atomization
Body (air or nitrogen) is entered by pass-through interface 7 inside nozzle body 1, forms the high pressure of 3~4bar；The outlet of nozzle needle 4
In the top export of nozzle body 1, the close gap that spacing only has 0.02mm~0.04mm, high pressure gas are formed between them
Body is sprayed from this gap, and eluent is flowed out from 4 inside of nozzle needle, 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
Demonstrate,prove the air-tightness that nozzle body 1 forms cavity with nozzle needle so that the spray-hole on nozzle body top becomes this atomising device
Sole outlet.
This structure causes the nozzle needle in nozzle to have vibration at work, but the slight vibration of nozzle needle can all cause instrument
The noise of rear end detector.
Invention content
The technical problems to be solved by the invention are：A kind of spray of the good evaporative light scattering detector of atomizing effect is provided
Mouth.
In order to solve the above technical problems, the technical solution adopted in the present invention is：The nozzle of evaporative light scattering detector, packet
The main body that middle part is equipped with step-like through-hole is included, main body one end is equipped with nozzle plate, is equipped at the faying face between main body and nozzle plate
Sealing ring, nozzle plate are equipped with spray orifice, and middle part is embedded with shock-absorbing sleeve in main body, is equipped in shock-absorbing sleeve coaxial with through-hole in main body
, the supported hole for passing through for nozzle needle and support being provided nozzle needle, be equipped in main body and compress in side of the shock-absorbing sleeve far from nozzle plate
It pads, sealing supporting sleeve is equipped in clamping pad, seal and nozzle needle is equipped in supporting sleeve, the other end, which is equipped with, in main body pushes against clamping pad
Eluent liquid inlet joint is embedded with connector lasso, nozzle needle and sealing supporting sleeve one end in one end that liquid inlet joint is located in main body
Connector lasso is pierced by, two are arranged in main body and sprays into the straight-through of high speed atomisation gas, the nozzle needle other end is stretched into spray orifice, spray
There is the gap sprayed for atomization gas between 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 along jet direction to nozzle needle close to one end of nozzle plate
Taper.
As a preferred solution, the shock-absorbing sleeve is located at straight-through air admission hole exit close to one end of nozzle plate.
As a preferred solution, the guiding conical surface is equipped on the inside of the nozzle plate at spray orifice mouth.
The beneficial effects of the invention are as follows：Since middle part is embedded with shock-absorbing sleeve in main body, it is equipped in shock-absorbing sleeve with leading in main body
The supported hole that hole is coaxial, for nozzle needle passes through and provide nozzle needle support is set in side of the shock-absorbing sleeve far from nozzle plate in main body
There is clamping pad, sealing supporting sleeve is equipped in clamping pad, seal and nozzle needle is equipped in supporting sleeve, the other end is equipped with pushing and pressing and presses in main body
The eluent liquid inlet joint tightly padded is embedded with connector lasso, nozzle needle and sealing support in one end that liquid inlet joint is located in main body
Set one end is pierced by connector lasso, and the nozzle needle other end is stretched into spray orifice, has between nozzle needle and spray orifice wall between atomization gas ejection
Gap nozzle needle into a two fixed rock-steady structure, is greatly improved its directionality, nozzle needle and nozzle body
Concentricity get a promotion, the processing request of clamping pad and nozzle body is reduced.
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 of nozzle plate is observed under mirror, wherein there is the nozzle needle assembled, the position of nozzle plate is finely tuned, makes itself and nozzle needle
Outlet is coaxial.Design in this way can greatly improve the yield rate of processing, can almost reach 100%, each nozzle
It can be finely adjusted assembling in this way.The consistency of nozzle can also be greatly improved.
Due to being arranged with the straight-through of two penetrating high speed atomisation gas in main body, from both sides air inlet simultaneously, to greatest extent
Ground reduces disturbance of the air inlet to nozzle needle, makes atomization stable and uniform.
Since the angle for leading directly to air inlet becomes 30-60 ゜ air inlets from vertical air inlet, such admission pressure is in nozzle needle radial direction
Component also further reduces, and greatly reduces the vibration of nozzle needle, makes atomization more stable and uniform.
Due to shock-absorbing sleeve close to one end of nozzle plate be in along jet direction to the inclined taper of nozzle needle, can be to being passed through in straight-through
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 admission hole 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, so as 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 guiding conical surface is equipped on the inside of nozzle plate at spray orifice mouth so that the airflow obstruction smaller gone out from spray orifice, from
And improve atomizing effect.
Description of the drawings
Fig. 1 is the structure diagram of original nozzle.
Fig. 2 is the structure diagram of the present invention.
In Fig. 2：1. 2. clamping pad of main body, 3. connector lasso, 4. nozzle needle 5. sealing supporting sleeve, 6. liquid inlet joint 7. is straight
9. shock-reducing sleeve of logical 8. nozzle plate, 10. sealing ring.
Specific embodiment
Below in conjunction with the accompanying drawings, detailed description of the present invention specific embodiment.
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 guiding 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 nozzle needle.
Clamping pad 1 is equipped in main body 1 in side of the shock-absorbing sleeve 9 far from nozzle plate 8, sealing supporting sleeve is equipped in clamping pad 1
5, it seals and nozzle needle 4 is equipped in supporting sleeve 5, 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 5 one end of sealing supporting sleeve are pierced by connector lasso 3.
4 other end of nozzle needle is stretched into spray orifice, has the gap sprayed for atomization gas between nozzle needle 4 and spray orifice wall.
It is 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 admission hole exit close to one end of nozzle plate 8, and
In along jet direction to 4 inclined taper of nozzle needle.
The implementation that the principles and effects of the invention are only illustrated in the above embodiments and part uses
Example, and is not intended to limit the present invention；It should be pointed out that for those of ordinary skill in the art, wound of the present invention is not being departed from
Under the premise of making design, various modifications and improvements can be made, these belong to 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 provide what is supported to nozzle needle
Supported hole is equipped with clamping pad in main body in side of the shock-absorbing sleeve far from nozzle plate, and sealing supporting sleeve, sealing branch are equipped in clamping pad
Nozzle needle is equipped in support set, the other end is equipped with the eluent liquid inlet joint for pushing against 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 supporting sleeve one end are pierced by connector lasso, two are arranged in main body
The straight-through of high speed atomisation gas is sprayed into, the nozzle needle other end is stretched into spray orifice, is had between nozzle needle and spray orifice wall and is sprayed 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 taper 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 admission hole 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 guiding conical surface is equipped at mouthful.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018101759385 | 2018-03-02 | ||
| CN201810175938 | 2018-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108187938A true CN108187938A (en) | 2018-06-22 |
Family
ID=62596611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810293033.8A Pending CN108187938A (en) | 2018-03-02 | 2018-03-30 | A kind of nozzle of evaporative light scattering detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108187938A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB995656A (en) * | 1962-05-04 | 1965-06-23 | Zeebrugge Forges Sa | Spray means for delivering a stream of atomized liquid in a carrier gas |
| CN201801572U (en) * | 2010-10-14 | 2011-04-20 | 江苏中矿大正表面工程技术有限公司 | High-efficiency multi-atomization arc pistol |
| CN202113966U (en) * | 2011-05-06 | 2012-01-18 | 新疆农垦科学院 | Bubble-atomized pesticide application sprayer |
| CN102389703A (en) * | 2011-10-14 | 2012-03-28 | 华南理工大学 | Liquid-coated gas desulfurizing/atomizing nozzle |
| CN103846172A (en) * | 2012-11-28 | 2014-06-11 | 山东中烟工业有限责任公司青岛卷烟厂 | External mixing type double-medium atomizing nozzle |
| CN205140937U (en) * | 2015-12-10 | 2016-04-06 | 北京七星华创电子股份有限公司 | Belt cleaning device is sprayed in two -phase flow atomizing with gas protection |
| CN106457275A (en) * | 2014-05-07 | 2017-02-22 | 杜尔系统股份公司 | Cleaning device and associated operating method |
| CN106475249A (en) * | 2016-09-13 | 2017-03-08 | 陕西科技大学 | A kind of pneumatic nebulization shower nozzle that can adjust atomizing particle size |
| CN106540825A (en) * | 2016-12-12 | 2017-03-29 | 江苏省农业科学院 | Secondary-atomizing two phase flow shower nozzle |
| CN206325734U (en) * | 2016-12-09 | 2017-07-14 | 杭州科龙电器工具股份有限公司 | A kind of electric spray gun |
| CN107486351A (en) * | 2017-09-18 | 2017-12-19 | 华中科技大学 | A kind of eddy flow mercury absorbent injection apparatus |
| US20180050357A1 (en) * | 2015-03-11 | 2018-02-22 | Axalta Coating Systems Ip Co., Llc | Spray gun with a hollow needle and single stage or two stage nozzle and method for use thereof |
-
2018
- 2018-03-30 CN CN201810293033.8A patent/CN108187938A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB995656A (en) * | 1962-05-04 | 1965-06-23 | Zeebrugge Forges Sa | Spray means for delivering a stream of atomized liquid in a carrier gas |
| CN201801572U (en) * | 2010-10-14 | 2011-04-20 | 江苏中矿大正表面工程技术有限公司 | High-efficiency multi-atomization arc pistol |
| CN202113966U (en) * | 2011-05-06 | 2012-01-18 | 新疆农垦科学院 | Bubble-atomized pesticide application sprayer |
| CN102389703A (en) * | 2011-10-14 | 2012-03-28 | 华南理工大学 | Liquid-coated gas desulfurizing/atomizing nozzle |
| CN103846172A (en) * | 2012-11-28 | 2014-06-11 | 山东中烟工业有限责任公司青岛卷烟厂 | External mixing type double-medium atomizing nozzle |
| CN106457275A (en) * | 2014-05-07 | 2017-02-22 | 杜尔系统股份公司 | Cleaning device and associated operating method |
| US20180050357A1 (en) * | 2015-03-11 | 2018-02-22 | Axalta Coating Systems Ip Co., Llc | Spray gun with a hollow needle and single stage or two stage nozzle and method for use thereof |
| CN205140937U (en) * | 2015-12-10 | 2016-04-06 | 北京七星华创电子股份有限公司 | Belt cleaning device is sprayed in two -phase flow atomizing with gas protection |
| CN106475249A (en) * | 2016-09-13 | 2017-03-08 | 陕西科技大学 | A kind of pneumatic nebulization shower nozzle that can adjust atomizing particle size |
| CN206325734U (en) * | 2016-12-09 | 2017-07-14 | 杭州科龙电器工具股份有限公司 | A kind of electric spray gun |
| CN106540825A (en) * | 2016-12-12 | 2017-03-29 | 江苏省农业科学院 | Secondary-atomizing two phase flow shower nozzle |
| CN107486351A (en) * | 2017-09-18 | 2017-12-19 | 华中科技大学 | A kind of eddy flow mercury absorbent injection apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180622 |