CN211668857U

CN211668857U - COD on-line detector

Info

Publication number: CN211668857U
Application number: CN202020143218.3U
Authority: CN
Inventors: 孔德宏
Original assignee: Anhui Kehuan Environmental Engineering Co ltd
Current assignee: Anhui Kehuan Environmental Engineering Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-10-13
Anticipated expiration: 2030-01-21

Abstract

The utility model relates to a COD on-line detector, which comprises a frame, wherein a reaction system is arranged above the frame, and a raw material system is arranged below the frame; the raw material system is a plurality of reagent bottles which are arranged below the frame in sequence; the reaction system include along a plurality of feed liquor pumps of frame width direction parallel arrangement in proper order, the feed liquor pump set up in the upper portion of frame top, the flowing back pump sets up in the below of feed liquor pump, clear up the pipe and erect and put between feed liquor pump, flowing back pump, the feed inlet of feed liquor pump with reagent bottle one-to-one and UNICOM, the feed inlet of pipe is cleared up to the discharge gate UNICOM of feed liquor pump, clear up the discharge gate UNICOM flowing back pump of pipe, clear up a pipe feed inlet, discharge gate and all set up the ooff valve. Simple structure and convenient detection.

Description

COD on-line detector

Technical Field

The utility model belongs to the detection device field, concretely relates to COD online detector.

Background

Chemical Oxygen demand (cod) (chemical Oxygen demand) is a chemical method for measuring the amount of reducing substances to be oxidized in a water sample. The oxygen equivalent of the species that can be oxidized by the strong oxidizing agent in the wastewater, wastewater treatment plant effluent, and contaminated water. It is an important and relatively fast measurable parameter of organic contamination, often denoted by the symbol COD. The chemical oxygen demand reflects the degree of pollution of water by reducing substances, such as organic matters, nitrite, ferrous salt, sulfide and the like, but the amount of inorganic reducing substances in general water and wastewater is relatively small, and the pollution by the organic matters is very common, so that COD can be used as a comprehensive index of the relative content of the organic substances.

Although the conventional COD online detector basically does not need manual intervention to prepare a preparation reagent due to the perfect preparation of a raw material system, the structure is complex, the raw material system and a reaction system need to be in butt joint in the detection process, and the detection and the operation are inconvenient.

Disclosure of Invention

The utility model aims at providing a COD on-line detector, simple structure detects the convenience.

In order to realize the above purpose, the utility model discloses a technical scheme be: a COD on-line detector comprises a frame, wherein a reaction system is arranged above the inside of the frame, and a raw material system is arranged below the inside of the frame; the raw material system is a plurality of reagent bottles which are arranged below the frame in sequence;

the reaction system include along a plurality of feed liquor pumps of frame width direction parallel arrangement in proper order, the feed liquor pump set up in the upper portion of frame top, the flowing back pump sets up in the below of feed liquor pump, clears up the pipe and erects to be put between feed liquor pump, the flowing back pump, the feed inlet of feed liquor pump with reagent bottle one-to-one and UNICOM, the feed inlet of pipe is cleared up to the discharge gate UNICOM of feed liquor pump, clears up the discharge gate UNICOM flowing back pump of pipe, clears up a pipe feed inlet, discharge gate and all sets up the ooff valve.

Furthermore, an upper electromagnetic valve is arranged at the feed end of the digestion pipe, and a lower electromagnetic valve is arranged at the discharge end of the digestion pipe.

Still further, the top of the front of frame sets up the display screen, and the back of display screen sets up the control integrated board, sets up wireless transmission module on the control integrated board, and the top of frame sets up transmission antenna.

Still further, the frame include last framework and lower framework, set up fixing bolt between the bottom surface of last framework and the top surface of lower framework, the bottom surface of last framework and the top surface side of lower framework set up angle steel.

The technical effects of the utility model reside in that: the utility model discloses a reaction system, raw materials system's upper and lower split type structure corresponds a plurality of reagent bottle extraction reaction raw materials through a plurality of feed liquor pump, and the export of raw materials is located the superordinate, directly flows automatically to clearing up and react in the pipe, and the back that finishes is reacted, opens and clears up pipe discharge gate department ooff valve, and the flowing back pump pumps reaction liquid in order to supply to detect. Simple structure and convenient detection.

Drawings

FIG. 1 is a side view of the present invention;

FIG. 2 is a side sectional view of the structure of the present invention;

fig. 3 is a top view cross-sectional structure of the present invention.

Detailed Description

Referring to the attached drawings, the COD online detector comprises a frame 10, wherein a reaction system 30 is arranged above the inside of the frame 10, and a raw material system 20 is arranged below the inside of the frame 10; the raw material system 20 is a plurality of reagent bottles 21 which are arranged below the frame 10 in sequence;

reaction system 30 include a plurality of feed liquor pumps 31 along frame 10 width direction parallel arrangement in proper order, feed liquor pump 31 set up in the upper portion of frame 10 top, positive displacement pump 33 sets up in the below of feed liquor pump 31, clears up pipe 32 and erects to be put between feed liquor pump 31, positive displacement pump 33, feed liquor pump 31 the feed inlet with reagent bottle 21 one-to-one and UNICOM, feed inlet of pipe 32 is cleared up in feed liquor pump 31's discharge gate UNICOM, clears up pipe 32's discharge gate UNICOM positive displacement pump 33, clears up pipe 32 feed inlet, discharge gate and all sets up the ooff valve.

The utility model discloses a reaction system 30, raw materials system 20's upper and lower split type structure corresponds a plurality of reagent bottle 21 extraction reaction raw materials through a plurality of feed liquor pump 31, and the export of raw materials is located the superordinate, directly flows automatically to clearing up and reacts in the pipe 32, and the back that finishes reacts is opened and is cleared up 32 discharge gate department switch valves, and the fluid-discharge pump 33 pumps reaction liquid in order to supply to detect. Simple structure and convenient detection.

Further, an upper solenoid valve 32a is arranged at the feeding end of the digestion pipe 32, and a lower solenoid valve 32b is arranged at the discharging end of the digestion pipe 32.

The upper electromagnetic valve 32a and the lower electromagnetic valve 32b are arranged, one of the upper electromagnetic valve 32a and the lower electromagnetic valve 32b is closed to prevent reaction liquid from overflowing from the upper end of the digestion tube 32 due to excessive reaction liquid, and the other of the upper electromagnetic valve 32a and the lower electromagnetic valve 32b is closed to enable the digestion tube 32 to be in a sealed environment, so that the reaction tightness and the undisturbed property are ensured, and the lower electromagnetic valve 32b is opened after the reaction is finished to detect the reaction liquid.

Still further, a display screen 40 is arranged above the front surface of the frame 10, a control integrated board 41 is arranged on the back surface of the display screen 40, a wireless transmission module 42 is arranged on the control integrated board 41, and a transmission antenna 50 is arranged on the top of the frame 10.

The control integrated board 41 that sets up connects raw materials system 20, the detection mainboard of reaction system 30, shows the information of raw materials system 20, reaction system 30 on display screen 40 in real time, and the information of raw materials system 20, reaction system 30 passes through wireless transmission module 42 and is transmitted to the cell-phone end or the PC end that detect the control personnel in real time by transmission antenna 50 real-time wireless, supplies to detect the control personnel real-time supervision.

Still further, the frame 10 includes an upper frame 11 and a lower frame 12, a fixing bolt is provided between a bottom surface of the upper frame 11 and a top surface of the lower frame 12, and a connecting angle 13 is provided between the bottom surface of the upper frame 11 and the top surface of the lower frame 12.

In this way, the reaction system 30 and the material system 20 are separately arranged on the upper frame 11 and the lower frame 12, so that the interference between the material part and the reaction part is directly avoided, and the upper frame 11 and the lower frame 12 are fixed by the fixing bolt and the connecting angle steel 13, thereby ensuring the stability of the whole frame 10.

Furthermore, the bottom surface of the upper frame 11 and the top surface of the lower frame 12 are both provided with heat dissipation through holes, and the heat dissipation through holes on the bottom surface of the upper frame 11 are communicated with the heat dissipation through holes on the top surface of the lower frame 12.

Referring to fig. 3, the heat dissipation through holes are located at the avoidance positions of the actual support positions of the components in the upper frame 11, so that the components do not need to be supported at the heat dissipation through holes with weaker support capability, the arrangement effect is good, the heat dissipation through holes in the bottom surface of the upper frame 11 are communicated with the heat dissipation through holes in the top surface of the lower frame 12, no partition is needed, and the heat dissipation effect is good.

The utility model is a COD_MnThe COD on-line automatic detector is specially designed for detecting and monitoring low-concentration and high-precision organic matter pollution, and is specially suitable for discharge concentration<And (3) monitoring COD (chemical oxygen demand) of water inlets and water outlets of 60mg/L factory and mine enterprises and urban sewage treatment plants on line.

The utility model discloses COD on-line measuring appearance's analytic method adopts permanganate photometry, accords with the national standard "determination of quality of water permanganate index" (GB11892-1989), belongs to COD monitoring's national A class method, has ensured monitoring data's accuracy and validity. The specific measurement method comprises the following steps: the potassium permanganate oxidation spectrophotometry is a method for measuring the permanganate index of water, namely, a reactant of standard solution, potassium permanganate and sulfuric acid is judged by the color change of the reactant, and if the color change is purple, the transmittance of the reaction color determines the final detection result.

Measurement range: (0-10) mg/L; the user requirement can be expanded to (0-10000) mg/L;

and (3) measuring precision:

quality control sample preparation: 3mg/L (COD <30 mg/L); +/-10% (COD is more than or equal to 30mg/L and less than 60 mg/L); plus or minus 6% (COD is more than or equal to 60mg/L and less than 100 mg/L); plus or minus 5% (COD is more than or equal to 100 mg/L);

actual water sample: 5mg/L (COD <30 mg/L); 15 percent +/-15 percent (COD is more than or equal to 30mg/L and less than 60 mg/L); +/-10% (COD is more than or equal to 60mg/L and less than 100 mg/L); +/-10% (COD is more than or equal to 100 mg/L);

zero drift: 5 mg/L;

detection limit: 0.2 mg/L;

and (3) measuring period: the shortest measuring period is 25 minutes/time; an online automatic monitoring period can be set: 0.5 hour/time;

consumption of reagents: (0.65-2.6) ml/time/reagent; the measurement can be guaranteed to be 380 times in 30 days by matching with a COD-B reagent set;

the use environment is as follows:

an external power supply: (220 ± 22) VAC; (50 ± 2.5) Hz; instrument power: the daily average is 50W; peak time < 300W;

and (3) the temperature and humidity of the environment: (0-40) DEG C, the relative humidity is less than or equal to 90 percent, and condensation do not occur;

externally connecting a water sample: pressure: (-10 to +2) KPa; flow rate: (-1.0 to 0.5) m/s; temperature: (5-40) DEG C;

the installation mode is as follows:

two-in-one or single-frame wall-mounted installation or two-in-one cabinet type installation; install inside the instrument cabinet, and can dismantle.

Claims

1. A COD on-line detector comprises a frame (10), wherein a reaction system (30) is arranged above the inside of the frame (10), and a raw material system (20) is arranged below the inside of the frame (10); the method is characterized in that:

the raw material system (20) is a plurality of reagent bottles (21) which are arranged below the frame (10) in sequence;

reaction system (30) include along frame (10) width direction a plurality of feed liquor pumps (31) of parallel arrangement in proper order, feed liquor pump (31) set up in the upper portion of frame (10) top, flowing back pump (33) set up in the below of feed liquor pump (31), clear up pipe (32) and erect and put between feed liquor pump (31), flowing back pump (33), the feed inlet of feed liquor pump (31) with reagent bottle (21) one-to-one and UNICOM, the feed inlet of pipe (32) is cleared up in the discharge gate UNICOM of feed liquor pump (31), clear up discharge gate UNICOM flowing back pump (33) of pipe (32), clear up pipe (32) feed inlet, discharge gate and all set up the ooff valve.

2. The on-line COD detector according to claim 1, wherein: an upper electromagnetic valve (32a) is arranged at the feeding end of the digestion pipe (32), and a lower electromagnetic valve (32b) is arranged at the discharging end of the digestion pipe (32).

3. The on-line COD detector according to claim 1, wherein: the display screen (40) is arranged above the front face of the frame (10), the control integrated board (41) is arranged on the back face of the display screen (40), the wireless transmission module (42) is arranged on the control integrated board (41), and the transmission antenna (50) is arranged at the top of the frame (10).

4. The on-line COD detector according to claim 1, wherein: the frame (10) comprises an upper frame body (11) and a lower frame body (12), wherein a fixing bolt is arranged between the bottom surface of the upper frame body (11) and the top surface of the lower frame body (12), and a connecting angle steel (13) is arranged on the side of the bottom surface of the upper frame body (11) and the top surface of the lower frame body (12).

5. The on-line COD detector according to claim 4, wherein: the bottom surface of the upper frame body (11) and the top surface of the lower frame body (12) are both provided with heat dissipation through holes, and the heat dissipation through holes on the bottom surface of the upper frame body (11) are communicated with the heat dissipation through holes on the top surface of the lower frame body (12).