CN214374318U - Device for detecting COD content in water - Google Patents
Device for detecting COD content in water Download PDFInfo
- Publication number
- CN214374318U CN214374318U CN202120285048.7U CN202120285048U CN214374318U CN 214374318 U CN214374318 U CN 214374318U CN 202120285048 U CN202120285048 U CN 202120285048U CN 214374318 U CN214374318 U CN 214374318U
- Authority
- CN
- China
- Prior art keywords
- cooling
- water
- communicated
- cooling tank
- cod content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a device for detecting COD content in water, which belongs to the technical field of inspection, and comprises a digestion device, a cooling assembly and a measuring instrument which are arranged according to the process, wherein the cooling assembly comprises a cooling tank and a test tube rack, the bottom of the cooling tank is provided with a water inlet and a water outlet, the water inlet of the cooling tank is communicated with cooling water, and the water outlet of the cooling tank is communicated with the outside; the test tube rack is arranged on the inner wall of the cooling groove, and a plurality of mounting holes are formed in the test tube rack. The device provided by the utility model can detect a large amount of water samples of treating, has improved the detection efficiency and the detection accuracy who treat the water sample.
Description
Technical Field
The utility model belongs to the technical field of the inspection, especially, relate to a detect device of aquatic COD content.
Background
COD represents the chemical oxygen demand, is an important index for evaluating the organic pollution degree of a water body, and refers to the quantity of a strong oxidant consumed by reducing substances in wastewater and water treated by the strong oxidant under certain conditions, and the result is converted into the content of oxygen (in mg/L). As the water quality environment in nature deteriorates day by day, and the water quality monitoring can timely, accurately and comprehensively reflect the current situations of the water environment quality and the pollution source, is a premise and a basis for formulating a feasible pollution prevention and control plan and water environment protection, becomes an important means and an indispensable link in energy conservation and emission reduction work, and can frequently monitor the content of COD in water.
The main standard of the existing method for determining the COD content in water is GB11914-89 potassium dichromate determination method, a digestion device is adopted for digestion detection analysis, the method is quick, convenient, accurate, reliable in result and pollution-free, but the digestion device cools a water sample into an instrument for automatic cooling, if the water sample is too much, the COD detection result in water is inaccurate due to poor automatic cooling effect of the digestion device, and the detection efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a detect device of aquatic COD content, it can be fast accurate carry out a plurality of water sample detection.
The utility model provides a device for detecting COD content in water, which comprises a digestion device, a cooling component and a measuring instrument which are arranged according to the process, wherein,
the cooling assembly comprises a cooling tank and a test tube rack, a water inlet and a water outlet are formed in the bottom of the cooling tank, the water inlet of the cooling tank is communicated with cooling water, and the water outlet of the cooling tank is communicated with the outside; the test tube rack is arranged on the inner wall of the cooling groove and comprises a plurality of mounting holes.
Further, a plurality of the mounting holes are circular, and the mounting holes are axially and vertically arranged.
Furthermore, the outer wall of the cooling groove is provided with a handrail.
Further, a thermometer is arranged at the bottom of the inner side of the cooling tank.
Further, the cooling assembly still includes the backup pad, the backup pad is provided with two, two the backup pad relatively fixed sets up on the inner wall of cooling bath, the lower fixed surface at test-tube rack both ends sets up two on the upper surface of backup pad.
Further, the cooling assembly further comprises a first pump, an inlet of the first pump is communicated with the cooling water, and an outlet of the first pump is communicated with a water inlet of the cooling tank.
Further, the cooling assembly further comprises a first valve, an inlet of the first valve is communicated with the cooling water, and an outlet of the first valve is communicated with an inlet of the first pump.
Further, the cooling assembly further comprises a second valve, an inlet of the second valve is communicated with a water outlet of the cooling groove, and an outlet of the second valve is communicated with the outside.
Further, the cooling assembly further comprises a cover disposed over the cooling slot.
Further, the cooling assembly further comprises a pull ring disposed on an upper surface of the lid.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
the utility model provides a detect device of aquatic COD content, the device include digestion ware, cooling module and measuring apparatu according to technology setting. Wherein, cooling module includes cooling bath and test-tube rack, when waiting to detect the water sample too much, waiting to detect the water sample with adding reagent obtains the solution that dissolves after the resolution ware is cleared up, can arrange the colour comparison tube that contains the solution that dissolves in the mounting hole of test-tube rack in, and the test-tube rack sets up on cooling bath 1's inner wall, the solution that dissolves in can cooling the colour comparison tube from the cooling water that the water inlet of cooling bath bottom got into like this, because the cooling water flows in from the water inlet of cooling bath, the delivery port of cooling bath flows out, excellent cooling capacity has, can handle a large amount of water samples of waiting to detect, the COD content of waiting to detect water can be fast accurate the acquisition of solution that dissolves after the cooling through the detector, thereby the detection efficiency who waits to detect the water sample and the detection accuracy have been improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a device for detecting the COD content in water according to the present invention;
FIG. 2 is a top view of the cooling assembly of FIG. 1;
fig. 3 is a front view of fig. 2.
In FIGS. 1-2: 1-digestion device, 2-cooling component, 3-measuring instrument, 201-water inlet, 202-mounting hole, 203-water outlet, 204-cooling tank, 205-test tube rack and 206-support plate.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly apparent from the description. It will be understood by those skilled in the art that the present embodiments and examples are illustrative of the present invention, and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by an existing method.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiment of the utility model provides a technical scheme is for solving above-mentioned technical problem, and the general thinking is as follows:
the utility model provides a detect device of aquatic COD content combines fig. 1, and the device includes digestion ware 1, cooling module 2 and measuring apparatu 3 according to the technology setting. Wherein, the digestion device 1 can carry out high temperature digestion to the water to be detected that adds the reagent, carries out the automatically cooling after digesting, and when the water sample quantity that waits to detect is too much, the speed of digestion device automatically cooling does not match with the sample quantity that waits to detect, and the incomplete cooling of the sample after digesting moreover can lead to measuring apparatu testing result inaccurate. The utility model discloses well measuring apparatu can be hash water quality analysis instrument (Shanghai) the model that limited company provided is DR 3900's visible spectrophotometer, can detect the COD content in industrial water, drinking water, sewage and the food and beverage, and its light source can be for aerifing the tungsten filament lamp, two light beam optical system of quasi, and the wavelength range is 320 and adds one's blood 1100nm, and the wavelength degree of accuracy is 1.5nm, and voltage is 110 and adds one's blood and 240 v.
Referring to fig. 2, the cooling assembly may include a cooling bath 204 and a tube rack 205.
The bottom of the cooling tank 204 can be provided with a water inlet 201 and a water outlet 203, the water inlet 201 of the cooling tank 204 is communicated with cooling water, and the water outlet of the cooling tank 204 is communicated with the outside; the test tube rack 205 is provided on the inner wall of the cooling bath 204, and the test tube rack 205 is provided with a plurality of mounting holes 202.
Treat that the water sample of examining is generally arranged in the colour comparison tube, when waiting to examine the water sample too much, the water sample of examining that will add reagent obtains the solution that disappears after the resolution ware is cleared up, can arrange the colour comparison tube that contains the solution that disappears in the mounting hole of test-tube rack in, and the test-tube rack sets up on the inner wall of cooling tank 204, the solution that disappears in the colour comparison tube can be cooled off to the cooling water that gets into from the water inlet of cooling tank 204 bottom like this, because the cooling water flows in from the water inlet of cooling tank 204, the delivery port of cooling tank 204 flows out, excellent cooling capacity has, can handle a large amount of water samples of examining, the COD content of waiting to examine the water of the solution that dissolves after the cooling can be fast accurate the acquisition of detector.
Specifically, the plurality of mounting holes 202 may be circular, and the plurality of mounting holes 202 are axially and vertically disposed, and the plurality of mounting holes 202 may also be square or prismatic, and may also be any shape capable of supporting a cuvette, which is not limited herein.
More specifically, the outer wall of the cooling tank 204 may be provided with a handrail to facilitate the moving of the cooling tank 204.
Further, the inside bottom of the cooling bath 204 may be provided with a thermometer to measure the temperature of the cooling water in the cooling bath 204.
Furthermore, the cooling module 2 may further include two support plates 206, two support plates 206 may be disposed on the support plates 206, the two support plates 206 are relatively fixedly disposed on the inner wall of the cooling tank 204, the lower surfaces of the two ends of the test tube rack are fixedly disposed on the upper surfaces of the two support plates 206, so that the test tube rack may be fixed on the inner wall of the cooling tank 204, in order to improve the supporting strength, the support plates 206 may also be disposed on the remaining inner walls of the cooling tank 204, and the specific number and position of the arrangement may be flexibly adjusted according to the effect, which is not specifically limited herein. In addition, the test-tube rack can be directly placed on two backup pads, makes the lower surface of test-tube rack and the upper surface contact of two backup pads, can make things convenient for taking and installing of test-tube rack.
Further, the cooling module 2 may further include a first pump, an inlet of the first pump is communicated with the cooling water, and an outlet of the first pump is communicated with the water inlet of the cooling tank 204, so that the flow rate of the cooling water may be increased, and the cooling effect of the digestion liquid in the cuvette may be further improved.
Furthermore, the cooling module 2 may further include a first valve, an inlet of the first valve is communicated with the cooling water, and an outlet of the first valve is communicated with an inlet of the first pump, so that the cooling water can be switched on and off.
Further, the cooling assembly 2 further includes a second valve, an inlet of the second valve is communicated with the water outlet of the cooling tank 204, and an outlet of the second valve is communicated with the outside. When the number of water samples to be detected is large, the first valve and the second valve can be closed when the matching of the cooling effect and the detection efficiency can be realized without flowing cooling water, so that the cooling water is placed in the cooling tank 204 for cooling the digestion liquid in a standing mode.
The utility model discloses in first pump can choose for use laboratory water pump, also can be called miniature water pump, and specific model can be selected as required, does not do specifically to be injectd here. The first valve and the second valve can be selected from a butterfly valve and a ball valve according to needs, and specific valves can be selected according to needs and are not particularly limited herein.
Specifically, this cooling module 2 can also include the lid, and the lid can set up on cooling bath 204, can wait to detect the water sample like this and detect and make dustproof effect.
More specifically, the cooling assembly 2 may further include a pull ring, which may be disposed on an upper surface of the lid to facilitate access to the lid.
The utility model provides a device detects COD's principle is: organic matters and certain reducing substances in the water are digested and oxidized by the acid potassium dichromate solution in a digestion device, and Cr6+Is reduced to Cr3+And carrying out colorimetric determination according to the color change of the reduced Cr3+ colored solution, thereby directly displaying the COD content in the solution. The reagent comprises LH-D reagent and LH-E reagent, wherein LH-D reagentThe agent is potassium dichromate solution, the molar concentration can be 0.0250mol/L, and the LH-E agent is sulfuric acid-silver sulfate solution. The sulfuric acid-silver sulfate solution can be prepared as follows: silver sulfate 10g is weighed into 1L of concentrated sulfuric acid, left to dissolve for 1-2 days, shaken up and carefully shaken before use. The 0.0250mol/L potassium dichromate solution can be obtained by the following method: 13.4837g of potassium dichromate (baked at 105 ℃ C. for 2 hours) were weighed out and placed in a 500mL volumetric flask.
The following should be noted in the detection process: 1. the digestion device is opened in advance and heated to reach the set temperature for reuse. 2. All links of the water sample pretreatment and the colorimetric process are continuously and compactly completed. 3. When the solution is used for colorimetric, the outer wall of the cuvette must be kept clean, and no solution, stain or water mark exists. 4. In the process of repeatedly using the colorimetric tube, the colorimetric tube is firstly confirmed to be intact without cracks or scratches so as to prevent the reaction tube from bursting in the test process. 5. The colorimetric solution cannot be stuck to a colorimetric tank of a measuring instrument or sprinkled in the colorimetric tank during colorimetric process. 6. When the digestion heating is carried out to the survey water sample, the protection casing equipped in the instrument must be covered on the request, ensures the operation safety. 7. When a water sample is analyzed, the reagent is added into the water sample and then the water sample is digested after being uniformly mixed, otherwise, the solution is splashed when the water sample is digested. 8. When the colorimetric solution is used, if the colorimetric solution is stained on skin or clothes, a large amount of clear water is required to be used for cleaning immediately so as to prevent the skin from being damaged. 9. When the special consumable reagent is prepared, the consumable reagent is prepared according to different specifications of the consumable reagent and the method on the use specification, and the prepared consumable reagent is ready for use (water used for preparing the reagent is ammonia-free water, and sulfuric acid is analytically pure or higher sulfuric acid). 10. When using a sulfuric acid-silver sulfate solution and a potassium dichromate solution, mercury sulfate is added to eliminate interference if chloride ions are present.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The device for detecting the COD content in water is characterized by comprising a digestion device, a cooling assembly and a measuring instrument which are arranged according to the process, wherein,
the cooling assembly comprises a cooling tank and a test tube rack, a water inlet and a water outlet are formed in the bottom of the cooling tank, the water inlet of the cooling tank is communicated with cooling water, and the water outlet of the cooling tank is communicated with the outside; the test tube rack is arranged on the inner wall of the cooling groove, and a plurality of mounting holes are formed in the test tube rack.
2. The device for detecting the COD content in water according to claim 1, wherein a plurality of said mounting holes are circular and are arranged vertically in the axial direction.
3. The device for detecting the COD content in water according to claim 1, wherein the outer wall of the cooling tank is provided with a handrail.
4. The device for detecting the COD content in water according to claim 1, wherein a thermometer is arranged at the bottom of the inner side of the cooling tank.
5. The device for detecting the COD content in water according to any one of claims 1 to 4, wherein the cooling assembly further comprises two support plates, the two support plates are fixedly arranged on the inner wall of the cooling tank relatively, and the lower surfaces of the two ends of the test tube rack are fixedly arranged on the upper surfaces of the two support plates.
6. The device for detecting the COD content in water according to claim 5, wherein the cooling module further comprises a first pump, an inlet of the first pump is communicated with the cooling water, and an outlet of the first pump is communicated with a water inlet of the cooling tank.
7. The device for detecting the COD content in water according to claim 5, wherein the cooling module further comprises a first valve, an inlet of the first valve is communicated with the cooling water, and an outlet of the first valve is communicated with an inlet of the first pump.
8. The device for detecting the COD content in water according to claim 5, wherein the cooling module further comprises a second valve, an inlet of the second valve is communicated with a water outlet of the cooling tank, and an outlet of the second valve is communicated with the outside.
9. The device for detecting the COD content in water according to claim 5, wherein the cooling module further comprises a cover, and the cover is arranged above the cooling tank.
10. The apparatus of claim 9, wherein the cooling assembly further comprises a pull ring disposed on an upper surface of the cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120285048.7U CN214374318U (en) | 2021-02-01 | 2021-02-01 | Device for detecting COD content in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120285048.7U CN214374318U (en) | 2021-02-01 | 2021-02-01 | Device for detecting COD content in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214374318U true CN214374318U (en) | 2021-10-08 |
Family
ID=77963347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120285048.7U Active CN214374318U (en) | 2021-02-01 | 2021-02-01 | Device for detecting COD content in water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214374318U (en) |
-
2021
- 2021-02-01 CN CN202120285048.7U patent/CN214374318U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206431040U (en) | A kind of Automatic On-line ammonia Nitrogen Analyzer | |
| Li et al. | A spectrophotometric method for determination of chemical oxygen demand using home-made reagents | |
| CN101793902A (en) | Device for fluidly injecting and rapidly analyzing residual chlorine of water quality and analysis method thereof | |
| CN101320001A (en) | High pressure flow injection rapid analysis system for permanganate index of water quality | |
| CN109085049A (en) | COD detection method in a kind of sewage and recycled water | |
| CN104345034A (en) | Method for determining chemical oxygen demand of liquid sample and analyzer | |
| CN103278501A (en) | COD quick detection solution, test box and determination method | |
| CN105277535B (en) | Ammonia nitrogen field fast detection method in a kind of water for eliminating reagent blank influence | |
| CN109374539A (en) | A kind of economic easily water-quality COD detection kit | |
| CN209215275U (en) | It is a kind of based on distillation-conductance method ammonia nitrogen water quality online automatic monitor | |
| CN102221530B (en) | Method for automatically analyzing sulfide in water sample | |
| CN214374318U (en) | Device for detecting COD content in water | |
| CN213302004U (en) | Water quality permanganate index on-line analyzer | |
| CN101187637A (en) | Automatic analysis method for seawater phenols compounds | |
| CN111337483A (en) | Seawater ammonia nitrogen concentration online detection device and method | |
| CN105954250A (en) | Novel method for measuring arsenic in urine | |
| CN110658139A (en) | Permanganate index analysis system | |
| CN110095424A (en) | A kind of four parameter online integrated apparatus of black and odorous water | |
| CN201540252U (en) | Total-phosphorus automatic analytical instrument | |
| CN214096724U (en) | COD water quality on-line detector | |
| CN108426836A (en) | Water monitoring device | |
| CN113324931A (en) | Method for continuously and rapidly measuring ammonia nitrogen concentration in fresh water by using small system | |
| TWI665439B (en) | A method for determining chemical oxygen demand of a water sample | |
| KR200281690Y1 (en) | Apparatus for measuring COD | |
| CN111504926A (en) | Method for measuring peroxyacetic acid content |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |