CN207396324U - COD, ammonia nitrogen and Cr VI detection device - Google Patents
COD, ammonia nitrogen and Cr VI detection device Download PDFInfo
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- CN207396324U CN207396324U CN201721432087.5U CN201721432087U CN207396324U CN 207396324 U CN207396324 U CN 207396324U CN 201721432087 U CN201721432087 U CN 201721432087U CN 207396324 U CN207396324 U CN 207396324U
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Abstract
The utility model is related to a kind of COD, ammonia nitrogen and Cr VI detection device, including detecting system and liquid waste system；Sampling system, the sampling system include delivery pump and proportional valve；First reagent and sample are mixed and are sent into the second reacting ring by the first reacting ring, first reacting ring；Second reacting ring, second reacting ring connect the second reagent pipeline and the first reacting ring；Heating module, the heating module connects the 3rd reagent pipeline and the second reacting ring, including first heater, solenoid valve block and secondary heating mechanism, pass through the switching of the solenoid valve block so that the secondary heating mechanism is selectively accessing on the access between first heater and detecting system.The utility model has many advantages, such as that simple in structure, easy to operate, resolution is efficient.
Description
Technical field
The utility model is related to lab analysis field, more particularly to a kind of COD, ammonia nitrogen and Cr VI detection device, institute
Detection device is stated to be detected COD, ammonia nitrogen and the Cr VI in environmental sample using same flow.
Background technology
Detection to COD, ammonia nitrogen and Cr VI in sample, because detection method is different, it usually needs in a set of detection device
Three independent passages of interior setting are detected respectively, and detection device needs larger operating space, and apparatus structure is complicated.Separately
Outside, also have in detection device and a passage is only set, manually switch different flow paths and optical system to realize three methods
Detection, but the method is complicated for operation, very high to the competency profiling of operating personnel.In addition, in the inspection of COD, ammonia nitrogen and Cr VI
It in survey method, is required to use heating, at present frequently with oil bath or electrical heating, but oil bath heating is slower, cumbersome；Electrical heating
Generally use reaction pipeline is wrapped in the modes of heated metal surfaces, but reaction solution can only single side be heated, digestion time is longer, inspection
It is low to survey efficiency.
Utility model content
In order to solve the deficiency in above-mentioned prior art, the utility model provides a kind of simple in structure, operation letter
Just efficient, high sensitivity COD, ammonia nitrogen and Cr VI detection device, are cleared up.
The purpose of this utility model is achieved through the following technical solutions：
A kind of COD, ammonia nitrogen and Cr VI detection device, including detecting system and liquid waste system, the detection device is into one
Step includes：
Sampling system, the sampling system include delivery pump and proportional valve, and the delivery pump is equipped with sample pipe, current-carrying
Pipeline and at least three reagent pipelines, the proportional valve include at least six interface, connect sample pipe, the two of quantitative loop respectively
End, liquid waste system, liquid-filled pipe and the first reacting ring；
First reagent and sample are mixed and are sent into the second reacting ring by the first reacting ring, first reacting ring；
Second reacting ring, second reacting ring connect the second reagent pipeline and the first reacting ring；
Heating module, the heating module connects the 3rd reagent pipeline and the second reacting ring, including first heater, electricity
Magnet valve group and secondary heating mechanism pass through the switching of the solenoid valve block so that the secondary heating mechanism is selectively accessing
On access between first heater and detecting system.
According to above-mentioned detection device, it is preferable that the first heater includes：It body and opens up on the body
The first hole group, the second hole group；
Insertion heating collar in the group of first hole, the surface of the heating collar are equipped with groove, and groove is embedded with reaction pipeline,
Heating rod is inserted in heating collar；
Second hole group, the interior insertion heating rod of second hole group.
According to above-mentioned detection device, it is preferable that the groove is spiral groove.
According to above-mentioned detection device, optionally, the reaction pipeline series connection in different heating circle.
According to above-mentioned detection device, it is preferable that the structure of secondary heating mechanism is identical with the structure of first heater.
According to above-mentioned detection device, optionally, the solenoid valve block is equipped at least four interfaces, connects first respectively and adds
The outlet of thermal, the entrance and exit and detecting system of secondary heating mechanism, at least four interface communicate two-by-two.
According to above-mentioned detection device, it is preferable that the body and the good conductor that heating collar is heat.
According to above-mentioned detection device, optionally, the proportional valve is six-way valve.
Compared with prior art, the utility model have the advantage that for：
1st, the utility model is by the setting of first heater, solenoid valve block and secondary heating mechanism, in same set of inspection
It surveys on device and realizes the measure of COD, ammonia nitrogen and Cr VI, it is simple in structure, easy to operate.
2nd, the utility model realizes reaction pipeline by way of the first hole group, the second hole group are opened up in body
Interior external heat, heating time is short, resolution is efficient, high sensitivity.
Description of the drawings
Fig. 1 is the structure diagram of the COD of the utility model embodiment 1, ammonia nitrogen and Cr VI detection device；
Fig. 2 be the utility model embodiment 1 COD, ammonia nitrogen and Cr VI detection device in heating unit structural representation
Figure.
Specific embodiment
Fig. 1-2 and following description describe the optional embodiments of the utility model how to instruct those skilled in the art
Implement and reproduce the utility model.In order to instruct technical solutions of the utility model, simplified or some conventional aspects be omitted.This
Field technology personnel should be appreciated that modification from these embodiments or replacement will be in the scope of the utility model.This field
Technical staff should be appreciated that following characteristics can combine to form multiple modifications of the utility model in various ways.As a result, originally
Utility model is not limited to following embodiments, and is only limited by the claims and their equivalents.
Embodiment 1
Fig. 1 schematically illustrates the structure diagram of the COD of the present embodiment, ammonia nitrogen and Cr VI detection device, and Fig. 2 is provided
The structure diagram of heating unit in the detection device, as shown in Figure 1, 2, the detection device, including detecting system 6 and useless
Liquid system (not shown), the detection device further comprise：
Sampling system, the sampling system include delivery pump 11 and proportional valve 12, and the delivery pump is equipped with sample pipe
111st, liquid-filled pipe 112, the first reagent pipeline 113, the second reagent pipeline 114, the 3rd reagent pipeline 115, the proportional valve 12
Comprising 6 interfaces, sample pipe 111, the both ends of quantitative loop, liquid waste system (not shown), liquid-filled pipe 112 and the are connected respectively
One reacting ring 2；
First reagent and sample are mixed and are sent into the second reacting ring 3 by the first reacting ring 2, first reacting ring；
Second reacting ring 3, second reacting ring connect the second reagent pipeline 114 and the first reacting ring 2；
Heating module 4, the heating module connect the 3rd reagent pipeline 115 and the second reacting ring 3, including the first heating dress
41, solenoid valve block 42 and secondary heating mechanism 43 are put, passes through the switching of the solenoid valve block 42 so that the secondary heating mechanism
43 are selectively accessing on the access between first heater 41 and detecting system 5.
Detecting system, liquid waste system, the first reacting ring and the second reacting ring are the prior art, and details are not described herein.
When carrying out the detection of COD, ammonia nitrogen and Cr VI to sample, because detection method is different, therefore the heating temperature needed for sample
Degree also differs, therefore sets solenoid valve block in the heating module, when carrying out COD detections, passes through the solenoid valve block
Switching so that secondary heating mechanism and first heater work together, and when carrying out the detection of ammonia nitrogen and Cr VI, pass through
The switching of the solenoid valve block, only first heater work.
In order to realize the switching of secondary heating mechanism, therefore：
Further, the solenoid valve block is equipped at least four interfaces, respectively the outlet of connection first heater, and second
The entrance and exit and detecting system of heating unit, at least four interface communicate two-by-two.
In order to improve the efficiency of heating surface of reaction solution, the interior external heat of pipeline is reacted in realization, therefore：
Further, the first heater includes：Body 411 and open up the first hole group 412 on the body,
Second hole group 413；
Insertion heating collar 6 in the group of first hole, the surface of the heating collar are equipped with groove 61, and groove is embedded with reaction tube
Line is inserted with heating rod 62 in heating collar；
Second hole group, the interior insertion heating rod 62 of second hole group.
Further, the body 411 and heating collar 6 are the good conductor of heat, to improve conduction efficiency, improve reaction solution
Heat up efficiency.
Further, the structure of secondary heating mechanism and the structure of first heater are identical.
Advantage of this embodiment is that：1st, by the design of flow path, realized in same set of detection device COD, ammonia nitrogen and
The measure of Cr VI, it is simple in structure, easy to operate；2nd, realize the interior external heat of reaction pipeline, improve resolution efficiency.
Embodiment 2
Detections of the COD, ammonia nitrogen and Cr VI detection device of the utility model embodiment 1 to environmental sample.
In the application examples, environmental sample is water sample, and delivery pump is peristaltic pump, and proportional valve is six-way valve, heating unit
One hole group includes 4 holes, is inserted into 4 heating collars respectively, and the groove that heating collar surface is equipped with is spiral groove, different heating circle
Interior reaction pipeline series connection, each heating collar is interior to be equipped with heating rod, to being heated on the inside of reaction pipeline, the reaction tube of heating
Line length is 4m；Second hole group includes 5 holes, is inserted into 5 heating rods respectively, to being heated on the outside of reaction pipeline, heats
Reaction length of pipeline be 4m；The detector is CCD detector, without optical filter, is carried out to COD, Cr VI and ammonia nitrogen
During detection, corresponding wavelength can be automatically switched to.
When being detected to the COD in water sample, the first reagent pipeline and the second reagent pipeline connection deionized water, the 3rd
Reagent pipeline connects the mixed solution of 0.5-3% sulfuric acid and 1-5mL potassium permanganate, and liquid-filled pipe connection deionized water is adjusted simultaneously
Section solenoid valve block causes first heater and secondary heating mechanism tandem working；
When being detected to the ammonia nitrogen in water sample, the first reagent pipeline connection 5-40g/L sodium potassium tartrate tetrahydrates and 15-30g/
L sodium citrates mixed solution (pH 4.5-7.0), the second reagent pipeline connection 10-35g/L sodium hydroxides, 60-100g/L bigcatkin willows
The mixed solution of sour sodium and 3-8g/L sodium nitroprussiates, the 3rd reagent pipeline connection 2-7g/L sodium dichloro cyanurate solution, current-carrying tube
Road connects deionized water, while electromagnetic valve for adjusting group causes secondary heating mechanism to disconnect, and only first heater works；
When being detected to the Cr VI in water sample, the first reagent pipeline connection deionized water, the second reagent pipeline connects
Logical 56ml/L sulfuric acid solutions, the mixing of the 3rd reagent pipeline connection 0.5-2.0g/L diphenylcarbazides and 20-50ml acetone are molten
Liquid, liquid-filled pipe connects deionized water, while electromagnetic valve for adjusting group causes secondary heating mechanism to disconnect, only first heater work
Make.
Claims (8)
1. a kind of COD, ammonia nitrogen and Cr VI detection device, including detecting system and liquid waste system, it is characterised in that：The detection
Device further comprises：
Sampling system, the sampling system include delivery pump and proportional valve, and the delivery pump is equipped with sample pipe, liquid-filled pipe
At least three reagent pipelines, the proportional valve include at least six interface, connect sample pipe, the both ends, useless of quantitative loop respectively
Liquid system, liquid-filled pipe and the first reacting ring；
First reagent and sample are mixed and are sent into the second reacting ring by the first reacting ring, first reacting ring；
Second reacting ring, second reacting ring connect the second reagent pipeline and the first reacting ring；
Heating module, the heating module connects the 3rd reagent pipeline and the second reacting ring, including first heater, solenoid valve
Group and secondary heating mechanism pass through the switching of the solenoid valve block so that the secondary heating mechanism is selectively accessing first
On access between heating unit and detecting system.
2. detection device according to claim 1, it is characterised in that：The first heater includes：It body and opens up
The first hole group, the second hole group on the body；
Insertion heating collar in the group of first hole, the surface of the heating collar are equipped with groove, and groove is embedded with reaction pipeline, heats
Heating rod is inserted in circle；
Second hole group, the interior insertion heating rod of second hole group.
3. detection device according to claim 2, it is characterised in that：The groove is spiral groove.
4. detection device according to claim 3, it is characterised in that：Reaction pipeline series connection in different heating circle.
5. detection device according to claim 4, it is characterised in that：The structure and first heater of secondary heating mechanism
Structure it is identical.
6. detection device according to claim 2, it is characterised in that：The solenoid valve block is equipped at least four interfaces, point
Not Lian Jie first heater outlet, the entrance and exit and detecting system of secondary heating mechanism, described at least four connect
Mouth communicates two-by-two.
7. detection device according to claim 2, it is characterised in that：The body and heating collar are hot good conductor.
8. detection device according to claim 1, it is characterised in that：The proportional valve is six-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721432087.5U CN207396324U (en) | 2017-10-31 | 2017-10-31 | COD, ammonia nitrogen and Cr VI detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721432087.5U CN207396324U (en) | 2017-10-31 | 2017-10-31 | COD, ammonia nitrogen and Cr VI detection device |
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| Publication Number | Publication Date |
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| CN207396324U true CN207396324U (en) | 2018-05-22 |
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| CN201721432087.5U Active CN207396324U (en) | 2017-10-31 | 2017-10-31 | COD, ammonia nitrogen and Cr VI detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735924A (en) * | 2020-07-13 | 2020-10-02 | 上海安杰环保科技股份有限公司 | Measuring instrument for measuring chemical oxygen demand |
-
2017
- 2017-10-31 CN CN201721432087.5U patent/CN207396324U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735924A (en) * | 2020-07-13 | 2020-10-02 | 上海安杰环保科技股份有限公司 | Measuring instrument for measuring chemical oxygen demand |
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