CN109211840B - Drift tube mechanism of evaporative light scattering detector - Google Patents
Drift tube mechanism of evaporative light scattering detector Download PDFInfo
- Publication number
- CN109211840B CN109211840B CN201810957889.0A CN201810957889A CN109211840B CN 109211840 B CN109211840 B CN 109211840B CN 201810957889 A CN201810957889 A CN 201810957889A CN 109211840 B CN109211840 B CN 109211840B
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- CN
- China
- Prior art keywords
- drift tube
- raffinate
- segment
- baffle
- residual liquid
- Prior art date
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- 230000007246 mechanism Effects 0.000 title claims abstract description 10
- 238000000105 evaporative light scattering detection Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000012864 cross contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
Abstract
The invention discloses a drift tube mechanism of a high-efficiency evaporative light scattering detector, which comprises a drift tube body and a residual liquid guide plate for plugging a residual liquid port on the drift tube body, wherein the drift tube body comprises an inlet section which is vertically downwards arranged, a middle section which is in a plane spiral shape, and an outlet section which is vertically upwards arranged, the inlet section is connected with a port of the middle section which is positioned at the center, the outlet section is connected with a port of the middle section which is positioned at the periphery, an included angle of 5-20 degrees is formed between the middle section and a horizontal plane, the upper surface and the lower surface of the middle section are respectively stuck with a flat heater, and the lowest part of each circle of spiral on the middle section is provided with the residual liquid port.
Description
Technical Field
The present invention relates to a drift tube mechanism.
Background
The drift tube is a core component of the evaporative light scattering detector, and the existing traditional drift tube generally adopts a three-dimensional spiral winding mode. Because the flexible heating band of the traditional drift tube can only be wound by hand, the flexible heating band has the defects of poor manufacturability, poor internal temperature consistency and low heating efficiency. And because the traditional drift tube adopts a three-dimensional spiral winding mode, the drift tube occupies a larger space, and because the residual liquid in the drift tube is long in discharge time, cross contamination is easy to cause, thereby influencing the accuracy of the measurement result of the next sample, and the continuous sample test interval time is long.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: a drift tube mechanism for an evaporative light scattering detector is provided with high efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a drift tube mechanism of evaporation light scattering detector, including setting up drift tube body on the mounting bracket in the detector casing and articulated on the mounting bracket through the articulated shaft, be equipped with the drive arrangement who drives raffinate baffle on the mounting bracket, drift tube body includes the entry segment of vertical downward arrangement, be the middle segment of plane heliciform, the export section of vertical upwards arranging, the entry segment is connected with the middle segment is located the port at center, the export segment is connected with the middle segment is located outlying port, be 5-20 contained angles between middle segment and the horizontal plane, the upper and lower surface of middle segment has respectively attached to flat heater, be equipped with the raffinate mouth in the lowest department of every round spiral on the middle segment, be equipped with a plurality of sealing blocks with each raffinate mouth one-to-one on the raffinate baffle, the one end that the articulated shaft was kept away from to the raffinate baffle is equipped with out the cistern, be equipped with the play liquid hose that is linked together with out the drain chute on the tip of drain chute on the raffinate baffle, each raffinate mouth punishment is equipped with the output tube in the output tube, be equipped with the needle valve in the sealing block cooperatees with the mouth of output tube.
As a preferable scheme, the driving device comprises a transmission gear arranged at the end part of the hinge shaft and a driving motor arranged on the mounting frame, and the end part of the output shaft of the driving motor is provided with a driving gear meshed with the transmission gear.
The beneficial effects of the invention are as follows: because the drift tube adopts a planar structure, the residual liquid discharge time is only one tenth of that of the conventional three-dimensional spiral drift tube, the detection speed is greatly improved, and the influence of cross contamination is reduced to a certain extent.
Because of adopting the flat heater, compare in traditional manual winding formula heating tape has convenient assembling, simple process, temperature is even, heating efficiency's advantage.
Because of adopting the plane spiral winding structure, compared with the traditional three-dimensional spiral winding structure, the device greatly reduces the internal space of the device occupied by the drift tube, and the device has the possibility of reducing the external volume.
Because each residual liquid port is respectively provided with an output pipe, a needle valve is arranged in the output pipe, and the sealing block is matched with the pipe orifice of the output pipe, the reliability of the residual liquid port when being closed is further ensured.
Drawings
Fig. 1 is a schematic diagram of the front view structure of embodiment 1 of the present invention.
Fig. 2 is a schematic side view of embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of the front view structure of embodiment 2 of the present invention.
Fig. 4 is a schematic side view of embodiment 2 of the present invention.
In fig. 1 to 4: 1. the device comprises an intermediate section, an inlet section, an outlet section, a residual liquid guide plate, a sealing block and an output pipe.
Detailed Description
Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Embodiment 1 as shown in fig. 1-2, a drift tube mechanism of an evaporative light scattering detector comprises a drift tube body arranged on a mounting frame in a detector housing and a residual liquid guide plate 4 hinged on the mounting frame through a hinge shaft, wherein a driving device for driving the residual liquid guide plate 4 is arranged on the mounting frame. The driving means comprises a transmission gear (not shown) provided at an end of the hinge shaft, and a driving motor (not shown) provided on the mounting frame, the end of the output shaft of the driving motor being provided with a driving gear (not shown) engaged with the transmission gear.
The drift tube body includes vertical entrance segment 2 that arranges downwards, be the middle segment 1 of plane heliciform, the export section 3 that vertical upwards arranges, entrance segment 2 is connected with the port that middle segment 1 is located the center, exit segment 3 is connected with the port that middle segment 1 is located outlying, be 5-20 contained angles between middle segment 1 and the horizontal plane, the upper and lower surface of middle segment 1 has respectively to paste flat heater (not shown in the figure), be equipped with the raffinate mouth in the lowest department of every round spiral on the middle segment, the one end that hinge axle was kept away from to raffinate baffle 4 is equipped with out the cistern (not shown in the figure), be equipped with on raffinate baffle 4 the tip in the drain chute with go out the drain hose (not shown in the figure) that the drain chute is linked together. The residual liquid guide plate 4 is provided with a plurality of sealing blocks 5 which are in one-to-one correspondence with the residual liquid ports.
When in operation, the device comprises:
before measurement, the residual liquid port is closed by a sealing block 5 on the residual liquid guide plate 4, an atomized detection sample is fed into the middle section 1 of the drift tube through the inlet section 2 of the drift tube after the residual liquid port is closed, after the detection sample is heated by a flat heater outside the middle section 1, the atomized sample is evaporated and enters a detector (not shown in the figure) from the outlet section 3 of the drift tube for detection, after the sample measurement is completed, the residual liquid port is opened by the residual liquid guide plate 4, and residual liquid which is not evaporated on the inner wall of the drift tube naturally drops down along the inner wall of the drift tube and is discharged from the inlet at the lower end and the residual liquid port.
Embodiment 2 as shown in fig. 3 to 4, a drift tube mechanism of an evaporative light scattering detector comprises a drift tube body provided on a mounting frame in a detector housing, and a residual liquid guide plate 4 hinged on the mounting frame through a hinge shaft, and a driving device for driving the residual liquid guide plate 4 is provided on the mounting frame. The driving means comprises a transmission gear (not shown) provided at an end of the hinge shaft, and a driving motor (not shown) provided on the mounting frame, the end of the output shaft of the driving motor being provided with a driving gear (not shown) engaged with the transmission gear.
The drift tube body comprises an inlet section 2 which is vertically downwards arranged, a middle section 1 which is in a plane spiral shape, and an outlet section 3 which is vertically upwards arranged, wherein the inlet section 2 is connected with a port of the middle section 1, which is positioned at the center, the outlet section 3 is connected with a port of the middle section 1, which is positioned at the periphery, an included angle of 5-20 degrees is formed between the middle section 1 and the horizontal plane, the upper surface and the lower surface of the middle section 1 are respectively stuck with a flat plate heater (not shown in the figure), and a residual liquid port is arranged at the lowest part of each circle of spiral on the middle section. Each residual liquid port is respectively provided with an output pipe 6, and a needle valve (not shown in the figure) is arranged in the output pipe 6. The end of the residual liquid guide plate 4 far away from the hinge shaft is provided with a liquid outlet groove (not shown in the figure), and the end part of the residual liquid guide plate 4, which is positioned at the liquid outlet groove, is provided with a liquid outlet hose (not shown in the figure) communicated with the liquid outlet groove. The residual liquid guide plate 4 is provided with a plurality of sealing blocks 5 which are in one-to-one correspondence with the pipe orifices of the output pipes 6.
When in operation, the device comprises:
before measuring, the residual liquid port is closed by the needle valve, the residual liquid port is plugged by the sealing block 5 on the residual liquid guide plate 4, an atomized detection sample is fed into the middle section 1 of the drift tube through the inlet section 2 of the drift tube after the residual liquid port is closed, after being heated by the outer flat heater of the middle section 1, the atomized sample is evaporated and enters the detector (not shown in the figure) from the outlet section 3 of the drift tube for detection, after the sample is measured, the residual liquid port is opened by the needle valve, the residual liquid guide plate 4 is opened, and residual liquid which is not evaporated on the inner wall of the drift tube naturally drops down along the inner wall of the drift tube and is discharged from the inlet at the lower end and the residual liquid port.
The above-described embodiments are merely illustrative of the principles and functions of the present invention, and some of the practical examples, not intended to limit the invention; it should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present invention.
Claims (2)
1. A drift tube mechanism for an evaporative light scattering detector, characterized by: including setting up drift tube body on the mounting bracket in the detector casing and articulating the drive arrangement of raffinate baffle on the mounting bracket through the articulated shaft, be equipped with drive raffinate baffle on the mounting bracket, drift tube body includes the entry segment of vertical downward arrangement, be the middle segment of plane heliciform, the exit segment of vertical upwards arranging, the entry segment is connected with the middle segment being located the port at center, the exit segment is connected with the middle segment being located outlying port, be 5-20 contained angles between middle segment and the horizontal plane, the upper and lower surface of middle segment has been pasted flat heater respectively, be equipped with the raffinate mouth in the lowest department of every round spiral on the middle segment, be equipped with a plurality of sealing blocks with each raffinate mouth one-to-one on the raffinate baffle, the one end that the articulated shaft was kept away from to the raffinate baffle is equipped with out the cistern, be equipped with the play liquid hose that is linked together with out the cistern in the tip of going out the liquid groove on the raffinate baffle, each raffinate mouth punishment is equipped with the needle valve in the output tube, sealing block cooperatees with the mouth of output tube.
2. A drift tube mechanism for an evaporative light scattering detector as defined in claim 1, further comprising: the driving device comprises a transmission gear arranged at the end part of the hinge shaft and a driving motor arranged on the mounting frame, and a driving gear meshed with the transmission gear is arranged at the end part of the output shaft of the driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810957889.0A CN109211840B (en) | 2018-08-22 | 2018-08-22 | Drift tube mechanism of evaporative light scattering detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810957889.0A CN109211840B (en) | 2018-08-22 | 2018-08-22 | Drift tube mechanism of evaporative light scattering detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109211840A CN109211840A (en) | 2019-01-15 |
| CN109211840B true CN109211840B (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810957889.0A Active CN109211840B (en) | 2018-08-22 | 2018-08-22 | Drift tube mechanism of evaporative light scattering detector |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2174455Y (en) * | 1993-04-13 | 1994-08-17 | 杨木苍 | Apparatus for washing and drying materials |
| CN102317756A (en) * | 2008-12-10 | 2012-01-11 | 全技术联合公司 | Components suitable for use in devices such as an evaporative light scattering detector |
| CN104971084A (en) * | 2015-07-21 | 2015-10-14 | 安徽师范大学 | Purifying method of gypenoside |
| CN105216971A (en) * | 2014-06-06 | 2016-01-06 | 上海海郑海洋建设工程技术有限公司 | Buoyancy aid work pile |
| CN208937498U (en) * | 2018-08-22 | 2019-06-04 | 苏州赛德福科学仪器有限公司 | A kind of drift tube mechanism of evaporative light scattering detector |
-
2018
- 2018-08-22 CN CN201810957889.0A patent/CN109211840B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2174455Y (en) * | 1993-04-13 | 1994-08-17 | 杨木苍 | Apparatus for washing and drying materials |
| CN102317756A (en) * | 2008-12-10 | 2012-01-11 | 全技术联合公司 | Components suitable for use in devices such as an evaporative light scattering detector |
| CN105216971A (en) * | 2014-06-06 | 2016-01-06 | 上海海郑海洋建设工程技术有限公司 | Buoyancy aid work pile |
| CN104971084A (en) * | 2015-07-21 | 2015-10-14 | 安徽师范大学 | Purifying method of gypenoside |
| CN208937498U (en) * | 2018-08-22 | 2019-06-04 | 苏州赛德福科学仪器有限公司 | A kind of drift tube mechanism of evaporative light scattering detector |
Non-Patent Citations (1)
| Title |
|---|
| 蒸发光散射检测器与紫外检测器用于人参中皂苷类成分检测的比较研究;苏本正;都波;石典花;;药学研究(第06期);第333-335页 * |
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| CN109211840A (en) | 2019-01-15 |
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