CN202133646U - Fixed wavelength detector - Google Patents
Fixed wavelength detector Download PDFInfo
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- CN202133646U CN202133646U CN201120139090U CN201120139090U CN202133646U CN 202133646 U CN202133646 U CN 202133646U CN 201120139090 U CN201120139090 U CN 201120139090U CN 201120139090 U CN201120139090 U CN 201120139090U CN 202133646 U CN202133646 U CN 202133646U
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- light source
- semi
- light
- wave length
- detecting device
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Abstract
The utility model provide a fixed wavelength detector which comprises a light source cover plate, a light source, a power supply motherboard, a connector, a semitransparent and semireflecting seat, a semitransparent and semireflecting lens, a reference seat, a reference receiver, a flow cell, a flow cell cover, an insulating cell cover, an insulating operation cover plate and a sample receiver, wherein the light source adopts an LED light source, and the LED light source and the power supply motherboard are integrated into a light source module. Light with fixed wavelength emitted by the light source module passes through the semitransparent and semireflecting lens, one half of the light is reflected to the direction of the reference seat and is received by the reference receiver to be used for detecting reference path signals, and the other half of the light passes through semitransparent and semireflecting lens and is received by the sample receiver via the flow cell to be used for detecting sample path signals. When light with different wavelengths is required to be selected, the light source module only needs to be changed.
Description
Technical field:
The wood utility model relates to a kind of fixed wave length detecting device, belongs to detector applies field in the liquid chromatography.
Background technology:
Traditional liquid chromatographic system generally comprises chromatographic column, transfusion unit, sample injection unit and detecting unit.Detecting device is most widely used detecting unit, can be divided into variable-wavelenght detector and fixed wave length detecting device.Variable-wavelenght detector adopts deuterium lamp and tungsten lamp as light source, can measure that testing sample is for the absorption variation of light in 190nm to the 900nm scope, and the scope of application is wider, but cost is also higher.For some field, only need just can accomplish the detection task such as the detecting device of a certain fixed wave length of 254nm or 280nm.In this case, select for use the fixed wave length detecting device to reduce cost.Usually, the fixed wave length detecting device adopts low pressure mercury lamp or medium pressure mercury lamp as light source, is equipped with optical filter simultaneously and selects a certain fixed wave length.The fixed wave length detecting device of this kind pattern is higher to the mercury lamp power requirement; And light channel structure is complicated, especially when needs are selected the 280nm ultraviolet light, must adopt the phosphorescence conversion method; The ultraviolet lighting that is about to 254nm is mapped to movably on the phosphorus sheet; Can produce the ultraviolet light of 280nm after the phosphorus sheet is excited, so cost is higher, poor reliability.
The utility model content:
The utility model provides a kind of fixed wave length detecting device, and it adopts the LED lamp as light source, saved optical filter, so light channel structure is than compact.The LED lamp adopts low-voltage DC supply, can directly LED lamp and supply module be integrated into light source module, when the light time that needs different wave length, can realize through changing light source module.
The technical scheme that the utility model adopted is following:
The fixed wave length detecting device of the utility model comprises optical source cover board, light source module, connector, semi-transparent semi-reflecting seat, semi-transparent semi-reflecting eyeglass, reference seat, reference receiver, flow cell, circulation pool cover, insulation pool cover, insulation work cover plate and sample receiver.
Light source module comprises light source and power supply mainboard, and wherein light source is the LED lamp, and light source is welded on the power supply mainboard.This LED lamp can be a visible light LED lamp, especially can be the ultraviolet LED lamp.Light source module is fixed on the rear end face of connector, and the connector center is provided with a through hole, and the center line of the LED lamp center line of through hole is therewith aimed at.On connector, and the front end face of optical source cover board is provided with groove to optical source cover board, can light source module be covered fully, thereby avoid extraneous parasitic light that detecting device is caused interference through screw retention.
The reference seat is fixed on the upper surface of connector, and the reference receiver is fixed on the reference seat.The upper surface of connector is provided with manhole, and the center line of this manhole through semi-transparent semi-reflecting eyeglass the center and perpendicular to the center line of light source.The light of light emitted is through semi-transparent semi-reflecting eyeglass, and half the light reflexes to reference seat direction and received by the reference receiver, and second half the light transmission eyeglass pond that circulates.
Semi-transparent semi-reflecting seat front end is square, and the rear end is circular.There is a through hole at semi-transparent semi-reflecting seat center; Rear end face is cut into the V-type groove of an angle of 90 degrees; And the center line of this V-type groove angle is parallel with the center line of central through hole, makes wherein half of light of light emitted reflex to the reference seat and is received by the reference receiver, and second half sees through the eyeglass pond that circulates.Semi-transparent semi-reflecting eyeglass is fixed on the lower surface of this V-type groove.
Flow cell passes through screw retention on the circulation pool cover.Insulation work cover plate, insulation pool cover and circulation pool cover pass through screw retention successively on semi-transparent semi-reflecting seat.Sample receiver is between insulation work cover plate and insulation pool cover, and insulation work cover plate rear end face is provided with groove, can sample receiver be covered fully, makes the whole optical path system be in the airtight environment.Light is through being received and change in detection signal by sample receiver behind the flow cell.
The advantage and the effect of the utility model are: use the light source of LED lamp as the fixed wave length detecting device; Compare as light source with low pressure mercury lamp, power supply requires to reduce, and can LED lamp and power supply mainboard be integrated into light source module; Because of not using optical filter, light channel structure is also simplified greatly simultaneously.When the light time that needs different wave length, only can realize through changing light source module.
Below in conjunction with accompanying drawing the utility model is done further to set forth.
Description of drawings:
Fig. 1 is the one-piece construction synoptic diagram of the utility model.
Fig. 2 is the one-piece construction exploded perspective view of the utility model.
Fig. 3 is the light path synoptic diagram of the utility model.
Fig. 4 is the semi-transparent semi-reflecting seat outside drawing of the utility model.
Concrete label is following among the figure:
For simple and clear purpose, the element in the accompanying drawing needn't be drawn in proportion.For example, some size of component among the figure can be amplified to help further to understand each embodiment of the utility model with respect to other elements.Term in instructions and/or claims " preceding ", " back ", " on ", D score etc. generally is used for descriptive purpose and needn't describes exclusive relative position all sidedly.Run through this instructions, as shown in Figure 2, be last with direction shown in the arrow A, with direction shown in the arrow B be before, and after with direction shown in the arrow C being.
Embodiment:
As depicted in figs. 1 and 2; The utility model provides a kind of fixed wave length UV-detector, and it comprises: optical source cover board 13, light source 11, power supply mainboard 12, connector 8, reference seat 9, reference receiver 10, semi-transparent semi-reflecting eyeglass 7, semi-transparent semi-reflecting seat 6, flow cell 4, circulation pool cover 5, insulation pool cover 3, insulation work cover plate 1 and sample receiver 2.
As shown in Figure 4, the front end of semi-transparent semi-reflecting seat 6 is square, and the rear end is circular.There is a through hole at the center of semi-transparent semi-reflecting seat 6; Rear end face is cut into the V-type groove of an angle of 90 degrees; And the angle center line of this V-type groove is parallel with the center line of central through hole, and wherein half reflexes to the reference seat and is received by the reference receiver to make the light of light emitted, and second half sees through the eyeglass pond that circulates.Semi-transparent semi-reflecting eyeglass 7 is fixed on the lower surface of this V-type groove.
Flow cell 4 passes through screw retention on circulation pool cover 5.Insulation work cover plate 1, insulation pool cover 3 and circulation pool cover 5 are according to vertical series arrangement, and the three passes through screw retention on semi-transparent semi-reflecting seat 6.Sample receiver 2 is between insulation work cover plate 1 and insulation pool cover 3, and the rear end face of insulation work cover plate 1 is provided with groove, and it can cover sample receiver 2 fully, makes the whole optical path system be in the airtight environment.Light is received and change in detection signal by sample receiver 2 through flow cell 4 backs.
According to the fixed wave length detecting device of the utility model,, compare as light source with low pressure mercury lamp owing to use the LED lamp as light source; Power supply requires to reduce; And can LED lamp and power supply mainboard be integrated into light source module,, change light source module and get final product when the light time that needs different wave length; Owing to use the LED lamp as light source, need not use optical filter, light channel structure is greatly simplified; In addition, when needs use ultraviolet light to detect, use the ultraviolet LED lamp as light source, need not use optical filter, and also need not use the phosphorescence conversion method, detector arrangement obtains simplifying and cost is reduced.
In above-mentioned instructions, the utility model has been described with reference to certain exemplary embodiments.Yet, should recognize, of following claim, can under the situation of the scope that does not depart from the utility model, make various modifications and variation.Term " comprises " does not get rid of other elements or step.Instructions and accompanying drawing are considered to illustrative approach, rather than ways to restrain, and all this repairing in the scope that all is included in the utility model.Therefore, the scope of the utility model appending claims from here is equal to decision with the legal of them, rather than only by above-mentioned example decision.
Claims (6)
1. fixed wave length detecting device comprises: light source, power supply mainboard, connector, semi-transparent semi-reflecting seat, semi-transparent semi-reflecting eyeglass, reference seat, reference receiver, flow cell, circulation pool cover, insulation pool cover, insulation work cover plate and sample receiver,
Wherein:
Light source is a led light source; And
By the semi-transparent semi-reflecting eyeglass of light process that light source sends, half the light reflexes to reference seat direction and is received by the reference receiver, and second half light transmission eyeglass is received by sample receiver behind flow cell.
2. fixed wave length detecting device according to claim 1, wherein, said light source is the visible light led light source.
3. fixed wave length detecting device according to claim 1, wherein, said light source is the ultraviolet LED light source.
4. fixed wave length detecting device according to claim 1, wherein, said light source and said power supply mainboard are integrated into light source module.
5. fixed wave length detecting device according to claim 1, wherein, said semi-transparent semi-reflecting seat center is provided with through hole, and rear end face is cut into the V-type groove of an angle of 90 degrees, and this V-type groove angle center line is parallel with the center line of central through hole.
6. fixed wave length detecting device according to claim 5, wherein, said semi-transparent semi-reflecting eyeglass is fixedly mounted on the lower surface of said semi-transparent semi-reflecting V-type groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120139090U CN202133646U (en) | 2011-05-05 | 2011-05-05 | Fixed wavelength detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120139090U CN202133646U (en) | 2011-05-05 | 2011-05-05 | Fixed wavelength detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202133646U true CN202133646U (en) | 2012-02-01 |
Family
ID=45522411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120139090U Expired - Lifetime CN202133646U (en) | 2011-05-05 | 2011-05-05 | Fixed wavelength detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202133646U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833747A (en) * | 2015-05-06 | 2015-08-12 | 华东理工大学 | Ultraviolet detector for preparing color spectrum employing deep-ultraviolet LED light source |
| CN105308450A (en) * | 2013-02-20 | 2016-02-03 | 克罗马利蒂卡有限责任公司 | Uv light emitting diode as light source in gas chromatography-uv absorption spectrophotometry |
-
2011
- 2011-05-05 CN CN201120139090U patent/CN202133646U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105308450A (en) * | 2013-02-20 | 2016-02-03 | 克罗马利蒂卡有限责任公司 | Uv light emitting diode as light source in gas chromatography-uv absorption spectrophotometry |
| CN104833747A (en) * | 2015-05-06 | 2015-08-12 | 华东理工大学 | Ultraviolet detector for preparing color spectrum employing deep-ultraviolet LED light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |
|
| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Xiao Yong Document name: Notice of termination of patent right |
|
| DD01 | Delivery of document by public notice |