CN204556487U - A kind of ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of variable light path - Google Patents
A kind of ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of variable light path Download PDFInfo
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- CN204556487U CN204556487U CN201520219040.5U CN201520219040U CN204556487U CN 204556487 U CN204556487 U CN 204556487U CN 201520219040 U CN201520219040 U CN 201520219040U CN 204556487 U CN204556487 U CN 204556487U
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- detecting unit
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Abstract
An ammonia nitrogen on-line computing model Metal constant temperature measuring chamber for variable light path, belongs to the on-line automatic field of measuring technique of water quality.Be made up of described measuring chamber upper cover, cylinder body, Optical Transmit Unit, optical detecting unit, stirring apparatus and base.Upper cover has reagent entry port; Metal cylinder interior is equipped with heating resistor and temperature sensor; Liquid flooding mouth is arranged at the design top, and leakage fluid dram is arranged at bottom; The left and right sides of cylinder body is equipped with Optical Transmit Unit and optical detecting unit respectively, the two horizontal alignment; Light path is determined by the lining of Optical Transmit Unit and optical detecting unit, can change light path by the lining changing different length; In cylinder body, there is magnetic stir bar; The bottom of cylinder body is fixed with the base can placing stirring motor.Measuring chamber will be heated to specific temperature in measuring chamber cylinder body by heating resistor and keep.The design's structure is simple, and light path is variable, and the heat conduction of metal cylinder body is fast, and temperature control precision is high, chemical reaction is even, fast, measuring period is short, and measuring accuracy is high, good stability.
Description
Technical field
The utility model relates to a kind of parts of ammonia nitrogen on-line computing model, and the ammonia nitrogen measuring chamber especially in environmental water quality monitoring belongs to liquid measure technical field.
Background technology
Ammonia nitrogen (NH
3-N) with free ammonia (NH
3) or ammonium salt (NH
4 +) form is present in water, both ratio of componentss depend on pH value and the water temperature of water.Measuring ammonia nitrogen concentration in water, is the important indicator controlling surface water, enterprise's waste discharge.At present, in monitoring water quality on line field, metric measurement ammonia nitrogen has the advantages such as strong, highly sensitive, the anti-interference and ease for use of selectivity because of it, is widely applied.But the chromogenic reaction of metric measurement ammonia nitrogen is influenced by environmental temperature, and the measuring chamber of a lot of ammonia nitrogen on-line computing model does not control temperature, or carried out temperature control, but measuring chamber adopts glass material to make, as as described in CN203508000 patent, due to glass poor heat conduction, temperature controls out of true, can cause the problems such as chromogenic reaction time length, poor stability.On the other hand, the application of ammonia nitrogen on-line computing model is wider, application is had at surface water and Pollution Source Monitoring field, in different sample, also difference is comparatively large for the concentration of ammonia nitrogen, and in surface water field, ammonia nitrogen concentration is often lower than 1mg/L, require that the sensitivity of ammonia nitrogen on-line computing model is very high, and in Pollution Source Monitoring field, ammonia nitrogen concentration, often higher than 10mg/L, requires that the sensitivity of ammonia nitrogen on-line computing model is then relatively low.Based on the on-line computing model of spectrophotometric method, its sensitivity analyzed is then that path to it by light is directly proportional, and therefore, in different applications, uses the measuring chamber of same light path will the sensitivity that measures of impact analysis.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, and provide a kind of ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of variable light path.
The technical solution of the utility model is:
Measuring chamber described in the design is made up of upper cover, cylinder body, Optical Transmit Unit, optical detecting unit, stirring apparatus and base, and the left and right sides of described cylinder body is separately installed with Optical Transmit Unit and optical detecting unit, the two horizontal alignment; Measuring chamber cylinder body is equipped with heating resistor, temperature sensor, Optical Transmit Unit, optical detecting unit, draining connector, overflow adapter, measuring chamber inferior part of the cylinder block is equipped with stirring apparatus and base; Measuring chamber top is provided with upper cover, joint base, liquid inlet joint and screw, and joint base directly contacts with cylinder body top, and liquid inlet joint is arranged on joint base, and upper cover and joint base are fixed on cylinder body by screw.
The material of described measuring chamber cylinder body is the resistant materials such as metal, such as stainless steel, and liquid directly contacts with described measuring chamber cylinder body, and temperature sensor and described heating resistor are loaded on described cylinder interior.
Described heating resistor is column type, and its periphery is heat-conducting metal; Described temperature sensor is current type temperature sensor, voltage-type temperature sensor or resistance temperature detector.
Described Optical Transmit Unit comprises front end lining one, glass sheet one, aft-end liner one, O-ring seal one, lining holder one, light source holder, light source, rear cover one, and it is arranged on described measuring chamber cylinder surface and one end of its front end lining one embeds described measuring chamber cylinder body.
Described optical detecting unit comprises front end lining two, glass sheet two, aft-end liner two, O-ring seal two, lining holder two, middle lasso, middle cover cap, screw two, photodetector holder, photodetector, rear cover two, and it is arranged on cylinder surface and one end of its front end lining two embeds described measuring chamber cylinder body.
Distance between two glass sheet in described Optical Transmit Unit and optical detecting unit is exactly the path of light by liquid, i.e. light path, by changing the lining of different length, can change light path.
The magnetite that described stirring apparatus comprises magnetic stir bar, stirring motor and is contained on stirring motor head.Magnetic stir bar is placed in described measuring chamber cylinder body, and the bottom of cylinder body is fixed with the base can placing stirring motor, and described stirring motor is between described measuring chamber cylinder body and described base.
Described Optical Transmit Unit and optical detecting unit are placed in the left and right sides with measuring chamber cylinder center line symmetry respectively.
Beneficial effect:
The utility model structure is simple, and easy to maintenance, the material of cylinder body is metal, and liquid is in cylinder body and directly contact with cylinder body, good heat conductivity, and heating liquid speed is fast, and temperature controls more accurate; In use, owing to being in heated at constant temperature state always, its light source stability is good, and substantially not by room temperature influence, and improve chemical reaction velocity due to temperature, Measuring Time shortens; Light path can change, and to adapt to the requirement in different application field, especially measures the highly sensitive requirement of low-concentration ammonia-nitrogen; Simultaneously owing to being configured with the magnetic stir bar controlled by stirring motor in cylinder body, facilitate reaction velocity and the homogeneity of water sample and reagent, further improve accuracy and the repeatability of measurement.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
(in each figure, same section label is consistent)
Fig. 1 is external structure schematic diagram of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A-A cut-open view of Fig. 2.
Fig. 4 is the B-B cut-open view of Fig. 2.
In figure: 1. upper cover, 1-1. joint base, 1-2. liquid inlet joint, 1-3. screw one, 2. cylinder body, 2-1. overflow adapter, 2-2. draining connector, 2-3. magnetic stir bar, 2-4. heating resistor, 2-5. temperature sensor, 3. Optical Transmit Unit, 3-1. front end lining one, 3-2. glass sheet one, 3-3. aft-end liner one, 3-4. O-ring seal one, 3-5. lining holder one, 3-6. light source holder, 3-7. light source, 3-8. rear cover one, 4. optical detecting unit, 4-1. front end lining two, 4-2. glass sheet two, 4-3. aft-end liner two, 4-4. O-ring seal two, 4-5. lining holder two, lasso in the middle of 4-6., cover cap in the middle of 4-7., 4-8. screw two, 4-9. photodetector holder, 4-10. photodetector, 4-11. rear cover two, 5. base, 5-1. stirring motor, 5-2. magnetite.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
See accompanying drawing 1,2,3,4, a kind of ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of variable light path, be made up of upper cover, cylinder body, Optical Transmit Unit, optical detecting unit, stirring apparatus and base, measuring chamber cylinder body is equipped with heating resistor, temperature sensor, Optical Transmit Unit, optical detecting unit, draining connector, overflow adapter, measuring chamber inferior part of the cylinder block is equipped with stirring apparatus and base; Measuring chamber top is provided with upper cover, joint base, liquid inlet joint and screw, and joint base directly contacts with cylinder body top, and liquid inlet joint is arranged on joint base, and upper cover and joint base are fixed on cylinder body by screw.
See accompanying drawing 1,2,3,4, the screw one of upper cover, joint base, at least one liquid inlet joint be arranged on joint base, at least two fixation measuring room upper covers is equipped with at described measuring chamber top.
See accompanying drawing 1,3, described Optical Transmit Unit comprises front end lining one, glass sheet one, aft-end liner one, O-ring seal one, lining holder one, light source holder, light source, rear cover one; Described O-ring seal one is loaded between glass sheet one and front end lining one, prevents from oozing out in liquid the past end liner cover one and the gap of glass sheet one.
See accompanying drawing 1,3, described optical detecting unit comprises front end lining two, glass sheet two, aft-end liner two, O-ring seal two, lining holder two, middle lasso, middle cover cap, screw two, photodetector holder, photodetector, rear cover two; Described O-ring seal two is loaded between glass sheet two and front end lining two, prevents from oozing out in liquid the past end liner cover two and the gap of glass sheet two.
See accompanying drawing 2,3,4, described Optical Transmit Unit and optical detecting unit are placed in the left and right sides with measuring chamber cylinder center line symmetry respectively.
The utility model when in use, specific temperature will be heated in measuring chamber cylinder body by heating resistor and keep constant temperature always, quantitative water sample to be measured is introduced in measuring chamber cylinder body by liquid inlet joint, again by liquid inlet joint introduce quantitative buffer solution regulate the potential of hydrogen of solution and quantitative can with the reagent of ammonia nitrogen generation chromogenic reaction in water sample, liquid directly contacts with cylinder interior and is heated, reaction generates the compound of particular color, solution absorbance is measured in certain wave strong point, just can according to the content of ammonia nitrogen in langbobier law calculation sample.Except test benchmark value with except measured value particular moment, overall process is rotated by the magnetite on stirring motor drive motor head, thus drive the magnetic stir bar in measuring chamber cylinder body to rotate, make the solution in measuring chamber cylinder body be stirred homogeneous heating, and accelerate chromogenic reaction process.After test terminates, testing liquid can be discharged from the draining connector of cylinder base.If because software and hardware go wrong or people for maloperation and cause liquid add excessive or normally cannot discharge cylinder body time, liquid can be discharged from the overflow adapter on cylinder body top, and can not overflow from the upper cover of cylinder body, avoids liquid corrosion associated components.
The utility model improves or reduces measurement sensistivity with when adapting to different application field at needs, just need the corresponding light path increasing or reduce measuring chamber, at this moment only need the front end lining one of processing different length, aft-end liner one and front end lining two, aft-end liner one, and one group that changes wherein or whole is changed the object that can realize changing light path.The change of light path is not unconfined, and it is limited by the size of the internal diameter of cylinder body and lining holder one, lining holder one.
Claims (4)
1. an ammonia nitrogen on-line computing model Metal constant temperature measuring chamber for variable light path, comprising: described measuring chamber upper cover, cylinder body, Optical Transmit Unit, optical detecting unit, stirring apparatus and base; It is characterized in that:
The left and right sides of described cylinder body is separately installed with Optical Transmit Unit and optical detecting unit, the two horizontal alignment; Measuring chamber cylinder body is equipped with heating resistor, temperature sensor, Optical Transmit Unit, optical detecting unit, draining connector, overflow adapter, measuring chamber inferior part of the cylinder block is equipped with stirring apparatus and base; Measuring chamber top is provided with upper cover, joint base, liquid inlet joint and screw, and joint base directly contacts with cylinder body top, and liquid inlet joint is arranged on joint base, and upper cover and joint base are fixed on cylinder body by screw;
Described Optical Transmit Unit comprises front end lining one, glass sheet one, aft-end liner one, O-ring seal one, lining holder one, light source holder, light source, rear cover one, and it is arranged on described measuring chamber cylinder surface and one end of its front end lining one embeds described measuring chamber cylinder body;
Described optical detecting unit comprises front end lining two, glass sheet two, aft-end liner two, O-ring seal two, lining holder two, middle lasso, middle cover cap, screw two, photodetector holder, photodetector, rear cover two, and it is arranged on cylinder surface and one end of its front end lining two embeds described measuring chamber cylinder body;
The magnetite that described stirring apparatus comprises magnetic stir bar, stirring motor and is contained on stirring motor head, magnetic stir bar is placed in described measuring chamber cylinder body, the bottom of cylinder body is fixed with the base can placing stirring motor, and described stirring motor is between described measuring chamber cylinder body and described base.
2. the ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of a kind of variable light path according to claim 1, it is characterized in that: the material of described measuring chamber cylinder body is metal corrosion-resistant material, liquid directly contacts with described measuring chamber cylinder body, and temperature sensor and described heating resistor are loaded on described cylinder interior.
3. the ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of a kind of variable light path according to claim 1, is characterized in that: described Optical Transmit Unit and optical detecting unit are placed in the left and right sides with measuring chamber cylinder center line symmetry respectively; Glass sheet one in described Optical Transmit Unit and optical detecting unit and the distance between glass sheet two are exactly the path of light by liquid, i.e. light path, by changing the lining of different length, can change light path.
4. the ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of a kind of variable light path according to claim 1, is characterized in that: described heating resistor is column type, and its periphery is heat-conducting metal; Described temperature sensor is current type temperature sensor, voltage-type temperature sensor or resistance temperature detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219040.5U CN204556487U (en) | 2015-04-05 | 2015-04-05 | A kind of ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of variable light path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219040.5U CN204556487U (en) | 2015-04-05 | 2015-04-05 | A kind of ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of variable light path |
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| Publication Number | Publication Date |
|---|---|
| CN204556487U true CN204556487U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520219040.5U Active CN204556487U (en) | 2015-04-05 | 2015-04-05 | A kind of ammonia nitrogen on-line computing model Metal constant temperature measuring chamber of variable light path |
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| Country | Link |
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| CN (1) | CN204556487U (en) |
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2015
- 2015-04-05 CN CN201520219040.5U patent/CN204556487U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |