CN205229146U - High just COD reflux unit of simple operation of accuracy - Google Patents
High just COD reflux unit of simple operation of accuracy Download PDFInfo
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- CN205229146U CN205229146U CN201521059903.3U CN201521059903U CN205229146U CN 205229146 U CN205229146 U CN 205229146U CN 201521059903 U CN201521059903 U CN 201521059903U CN 205229146 U CN205229146 U CN 205229146U
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- cod
- pipe
- condenser
- simple operation
- reflux
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Abstract
The utility model discloses a high just COD reflux unit of simple operation of accuracy, it includes COD constant temperature heating appearance, cylindrical heating pipe and the backward flow condenser pipe of setting on cylindrical heating pipe, and the backward flow condenser pipe is snakelike condenser tube, and the upper end is the funnel -shaped opening, and the lower extreme is connected with cylindrical heating pipe ground, connects through the rubber tube between the condenser pipe to communicate with each other. The utility model discloses can be used to a plurality of sample simultaneous determinations, add sulphuric acid - silver sulfate solution from condenser pipe upper end funnel -shaped opening, can avoid spilling over of low boiling organic matter, convenient operation and accurate, snakelike condenser tube had both improved the condensation effect, can play certain cushioning effect to bumping liquid again, had improved the security of experiment.
Description
Technical field
The utility model relates to the reflux that in the experiment of a kind of monitoring water environment, COD measures, the high and COD reflux of simple operation of especially a kind of accuracy.
Background technology
COD is one of most important organic contamination overall target in monitoring water environment, and it can in order to judge organic relative content in water body.Accurately operate the measurement of COD particularly important easily.National Standard Method is surveyed COD and is adopted potassium dichromate oxidation, requires the potassium bichromate solution adding known quantity in water sample, and in strong acid media, makes catalyzer with silver sulfate carry out oxidation to reducing substances and clear up.
National Standard Method measures COD, after adding water sample to be measured, potassium dichromate standard solution and zeolite successively, connects reflux and opens condensate water, then above condenser pipe, slowly adding 30ml sulfuric acid-silver sulfate solution, overflow to prevent some low-boiling-point organic compounds.After mixing, start heating, start heated at constant temperature backflow 2h from solution boiling.Traditional reflux adopts on conical flask and connects general spherical shape reflux condensing tube, and fix condenser pipe with iron stand, heating by electric cooker conical flask, this reflux floor area is large, and poor stability, heats uneven, and condenser pipe is suitable for reading less, adds sulfuric acid inconvenient.Common COD heated at constant temperature refluxing unit, recirculatory pipe designs for straight tube, and condensation effect is bad, and add sulfuric acid difficulty, if there is boiling explosion phenomenon, vessel port directly gone out by the medicines such as the concentrated sulphuric acid, can cause personal injury.The existing patent No. is the design of 201120094781.7, straight shape recirculatory pipe is designed to the roundabout bending structure in middle part, although effectively prevent the danger that the concentrated sulphuric acid goes out the mouth of pipe, the concentrated sulphuric acid cannot be added from the backflow mouth of pipe, make operation lack of standardization, cause measurement result inaccurate.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of accuracy high and the COD reflux of simple operation.
The utility model have employed following technical scheme for achieving the above object:
Apparatus main body comprises COD heated at constant temperature instrument, column type heating tube and reflux condensing tube, and reflux condensing tube is serpentine condenser, and the top of condenser pipe is funnel-shaped opening.Column type heating tube is placed in the bottoming hole of heated at constant temperature instrument, between condenser pipe lower end with cylindrical heater pipe, ground is connected, and connects communicate between condenser pipe with rubber tube.
The course of work of the present utility model:
Testing sample is joined in cylindrical heater pipe, and add potassium dichromate standard solution and beaded glass, cylindrical heater pipe is placed in the bottoming hole of COD heated at constant temperature instrument, connect condenser pipe, open condensate water, water (flow) direction follows bottom in and top out principle, adds 30ml sulfuric acid-silver sulfate solution from condenser pipe upper funnel shape opening, starts heating after mixing.
The utility model discloses the high and COD reflux of simple operation of a kind of accuracy, bottom is cylindrical heater pipe, heating surface area is large and even, save space, can multiple sample Simultaneously test, improve COD determination efficiency, top is one end open is funnel shaped serpentine condenser, funnel-shaped opening facilitates in experimentation and adds the concentrated sulphuric acid, serpentine condenser to bumping liquid along condenser pipe rising to effective buffer action, both the spilling of low-boiling-point organic compound had been prevented, avoid again the generation that bumping liquid splash is hurted sb.'s feelings, add accuracy and the security of experiment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In Fig. 1: 1-COD heated at constant temperature instrument; 2-cylindrical heater pipe; 3-ground connects; 4-serpentine condenser; 5-funnel-shaped opening; 6-rubber tube.
Embodiment
Below in conjunction with accompanying drawing 1, embodiment of the present utility model is described further:
With reference to shown in Fig. 1, this device comprises COD heated at constant temperature instrument 1, cylindrical heater pipe 2, reflux condensing tube 4, rubber tube 6, cylindrical heater pipe 2 is connected 3 with serpentine condenser 4 by ground and is placed in the bottoming hole of COD heated at constant temperature instrument 1, and reflux condensing tube 4 is serpentine condenser, top is funnel-shaped opening 5, and reflux condensing tube 4 is communicated by rubber tube 6 connection.
In the specific implementation, testing sample is added in cylindrical heater pipe 2, then potassium dichromate standard solution and beaded glass is added, connecting reflux condensing tube 4 is placed in the bottoming hole in COD heated at constant temperature instrument 1, open condensate water, water (flow) direction follows bottom in and top out principle, adds 30ml sulfuric acid-silver sulfate solution through reflux condensing tube 4 upper funnel shape opening 5.This design had both prevented the spilling of low-boiling-point organic compound, made again operation safe and convenient more, meanwhile, while serpentine condenser improves condensation effect, also can play effective buffer action to the liquid of bumping.
Claims (4)
1. the high and COD reflux for simple operation of accuracy, is characterized in that: comprise COD heated at constant temperature instrument (1), cylindrical heater pipe (2), and is arranged on the reflux condensing tube (4) on cylindrical heater pipe (2).
2. the high and COD reflux of simple operation of a kind of accuracy according to claim 1, it is characterized in that: described reflux condensing tube (4) is serpentine condenser, upper end is funnel-shaped opening (5), and funnel bore is 60mm ~ 80mm.
3. the high and COD reflux of simple operation of a kind of accuracy according to claim 1, is characterized in that: described cylindrical heater pipe (2) with reflux condensing tube (4) for ground is connected (3).
4. the high and COD reflux of simple operation of a kind of accuracy according to claim 1, is characterized in that: connected by rubber tube (6) between described reflux condensing tube (4) and communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059903.3U CN205229146U (en) | 2015-12-19 | 2015-12-19 | High just COD reflux unit of simple operation of accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059903.3U CN205229146U (en) | 2015-12-19 | 2015-12-19 | High just COD reflux unit of simple operation of accuracy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205229146U true CN205229146U (en) | 2016-05-11 |
Family
ID=55904203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521059903.3U Expired - Fee Related CN205229146U (en) | 2015-12-19 | 2015-12-19 | High just COD reflux unit of simple operation of accuracy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205229146U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328639A (en) * | 2017-08-08 | 2017-11-07 | 浙江云广检测技术服务有限公司 | A kind of COD water circle devices |
| CN109032227A (en) * | 2018-10-19 | 2018-12-18 | 山东大学 | A kind of coagulating bath concentration self-control device |
-
2015
- 2015-12-19 CN CN201521059903.3U patent/CN205229146U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328639A (en) * | 2017-08-08 | 2017-11-07 | 浙江云广检测技术服务有限公司 | A kind of COD water circle devices |
| CN109032227A (en) * | 2018-10-19 | 2018-12-18 | 山东大学 | A kind of coagulating bath concentration self-control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20161219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |