CN113049307A - Water quality on-line analyzer and detection method thereof - Google Patents
Water quality on-line analyzer and detection method thereof Download PDFInfo
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- CN113049307A CN113049307A CN202110226787.3A CN202110226787A CN113049307A CN 113049307 A CN113049307 A CN 113049307A CN 202110226787 A CN202110226787 A CN 202110226787A CN 113049307 A CN113049307 A CN 113049307A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 238000006243 chemical reaction Methods 0.000 claims abstract description 174
- 239000007788 liquid Substances 0.000 claims abstract description 155
- 238000004140 cleaning Methods 0.000 claims abstract description 116
- 239000002699 waste material Substances 0.000 claims abstract description 96
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 79
- 238000011084 recovery Methods 0.000 claims abstract description 56
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 39
- 238000005070 sampling Methods 0.000 claims description 66
- 238000010438 heat treatment Methods 0.000 claims description 29
- 230000005484 gravity Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 20
- 238000005086 pumping Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000001954 sterilising effect Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 241000894006 Bacteria Species 0.000 description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 22
- 241000588724 Escherichia coli Species 0.000 description 16
- 230000029087 digestion Effects 0.000 description 15
- 239000012153 distilled water Substances 0.000 description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 11
- 229910052698 phosphorus Inorganic materials 0.000 description 11
- 239000011574 phosphorus Substances 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 10
- 230000001580 bacterial effect Effects 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 238000003556 assay Methods 0.000 description 5
- 238000004737 colorimetric analysis Methods 0.000 description 5
- 238000011534 incubation Methods 0.000 description 5
- 230000036632 reaction speed Effects 0.000 description 5
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L silver sulfate Chemical compound [Ag+].[Ag+].[O-]S([O-])(=O)=O YPNVIBVEFVRZPJ-UHFFFAOYSA-L 0.000 description 5
- 229910000367 silver sulfate Inorganic materials 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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Abstract
The invention provides a water quality on-line analyzer and a detection method thereof, belonging to the technical field of water quality detection. The technical scheme is as follows: an online water quality analyzer is characterized by comprising a case, a multi-way valve arranged in the case, a metering device, a reaction device, a waste liquid recovery device and a plurality of liquid storage containers filled with different reagents and cleaning liquids, wherein the metering device, the reaction device, the waste liquid recovery device and the plurality of liquid storage containers are respectively connected with the multi-way valve; a peristaltic pump is connected between the waste liquid recovery device and the metering device; the waste liquid recovery device is connected with the upper end of the reaction device through a liquid discharge pipe, and the waste liquid recovery device is positioned below the reaction device. The invention has the beneficial effects that: can conveniently wash the equipment before and after the water quality detection.
Description
Technical Field
The invention relates to the technical field of water quality detection, in particular to a water quality on-line analyzer and a detection method thereof.
Background
The water quality on-line detection analyzer is widely applied to monitoring points such as a water environment automatic monitoring station, a pollution discharge monitoring point, a regional water boundary point and the like, can detect the functions of various substances in a water sample in real time by using different reagents and reaction methods, and is a water quality detection instrument with strong compatibility. In order to ensure the accuracy of detection data, the equipment needs to be cleaned no matter before and after the water quality is detected, and in the prior art, the cleaning process of the water quality analyzer is complex, time-consuming and labor-consuming.
Disclosure of Invention
The invention aims to provide an online water quality analyzer which can be used for conveniently cleaning equipment before and after water quality detection.
The invention is realized by the following measures: an online water quality analyzer is characterized by comprising a case, a multi-way valve arranged in the case, a metering device, a reaction device, a waste liquid recovery device and a plurality of liquid storage containers filled with different reagents and cleaning liquids, wherein the metering device, the reaction device, the waste liquid recovery device and the plurality of liquid storage containers are respectively connected with the multi-way valve;
a peristaltic pump is connected between the waste liquid recovery device and the metering device;
the waste liquid recovery device is connected with the upper end of the reaction device through a liquid discharge pipe, and the waste liquid recovery device is positioned below the reaction device.
The multi-way valve, the metering device, the reaction device, the waste liquid recovery device, the peristaltic pump and the liquid storage container are connected in a connection relationship by adopting flexible pipes.
The sampling device comprises a sampling assembly arranged at the lower part of the case, wherein the sampling assembly comprises a water inlet pipe, a water outlet pipe and a pressure relief pipe which are sequentially arranged from top to bottom;
the pressure relief pipe is communicated with the sampling pipe, the communication position of the pressure relief pipe is higher than the communication position of the water inlet pipe and the sampling pipe and the communication position of the water outlet pipe and the sampling pipe, and valves are arranged on the water inlet pipe and the water outlet pipe;
the sampling pipe is communicated with the multi-way valve.
And a drain valve is arranged on the sampling pipe and below the communication part of the pressure relief pipe and the sampling pipe. The pipe diameter of the pressure relief pipe is larger than that of the water inlet pipe and the water outlet pipe.
The water at the water source enters from the water inlet pipe through the water pump, most of the water directly flows out from the water outlet pipe, and a small part of the water enters into the sampling pipe.
The sampling pipe is connected with the multi-way valve through a hose, and the water inlet end of the hose is lower than the communication part of the pressure relief pipe and the sampling pipe. The upper portion of sampling pipe is transparent material, can be to observing whether there is water to get into.
The intersection of inlet tube and outlet pipe is equipped with Y type filter, Y type filter pass through the tubule with the lower part intercommunication of sampling pipe, Y type filter can carry out filtration treatment to water, prevents that impurity from causing the jam in getting into the multi-ported valve.
The metering device comprises a mounting frame, a glass metering tube is arranged on the mounting frame, the upper end and the lower end of the glass metering tube extend out of the mounting frame and are provided with hollow plugs, the upper plug is communicated with the peristaltic pump, and the lower plug is communicated with the multi-way valve;
infrared geminate transistors are symmetrically arranged on the mounting rack and positioned on the outer sides of the upper end and the lower end of the glass metering tube;
the mounting rack is arranged inside the case.
The specific working process of the metering device is that a reagent or a detected water sample is pressed into the metering tube through the multi-way valve by positive rotation of the peristaltic pump, and with the continuous rising of the liquid level, when the liquid reaches the position of the upper infrared pair tube, the infrared ray is changed to generate an electric signal, and then the suction is stopped; the peristaltic pump rotates reversely, liquid sucked in the glass metering tube enters the reaction device after passing through the multi-way valve, and an electric signal is generated when the liquid level is reduced continuously and reaches the position of the lower section of the infrared pair tube, and then the discharge is stopped; the liquid level difference between the infrared pair of tubes is a fixed metering value.
The utility model discloses a glass metering tube, including mounting bracket, infrared geminate transistor, mounting bracket, flange, glass metering tube, infrared geminate transistor, infrared sensing element.
The reaction device comprises a frame, a reaction tube is arranged in the frame, two ends of the reaction tube extend out of the frame, electromagnetic valves are arranged at the extending ends of the reaction tube, hollow installation parts are coaxially arranged on the frame and positioned at two sides of the reaction tube, the installation parts are arranged on the frame, a light source transmitter is detachably arranged in one installation part, and a light source receiver is detachably arranged in the other installation part; the light source transmitter and the light source receiver can be replaced according to different detection items, are generally in threaded connection, and threaded holes matched with the light source transmitter and the light source receiver are reserved on the mounting piece.
The upper electromagnetic valve is connected with the waste liquid recovery device, and the lower electromagnetic valve is communicated with the multi-way valve;
any open end of the frame is fixed in the case, and the other end is provided with a shading plate.
The two ends of the reaction tube are provided with connecting pieces with external threads, the connecting pieces are arranged on the frame through threaded connection, and the electromagnetic valve is arranged on the connecting pieces through threaded connection.
The outside winding of reaction tube has the heater strip, still be provided with temperature sensor and ultrasonic wave module on the inner wall of reaction tube, utilize ultrasonic vibration washing reaction tube, control the temperature through temperature sensor.
The device also comprises a device for cooling the reaction tube, and the device can adopt the prior art, such as arranging an exhaust fan at the corresponding position of the reaction tube and cooling by accelerating the flow speed of air.
The temperature sensor adopts PT100, the resistance value of the temperature sensor can be increased along with the increase of the temperature, and the PID algorithm is adopted to control the heating wires to heat, so that the temperature can be better controlled to be the designated temperature, and the temperature can be prevented from being suddenly increased or decreased.
The multi-way valve preferably adopts a nine-way valve, and the multi-way valve controls the slide hole to turn to different directions through a stepping motor so as to realize water sample, distilled water and different reagents. A stepper motor is an actuator that converts electrical pulses into angular displacements. When the stepping motor driving circuit receives a pulse signal, the stepping motor is driven to rotate by a fixed angle, and the rotating angle can be controlled by the pulse quantity given to the stepping motor driving circuit, so that the purpose of positioning is achieved.
Still include to multi-ported valve, metering device, reaction unit, waste liquid recovery unit, peristaltic pump and other valves carry out the central controller who controls, central controller uses STM32F103RCT6 chip as the core, can realize automatic sampling, automatic reaction, self-cleaning, temperature control, online debugging, signal acquisition and touch-sensitive screen communication function, to the control of execution unit such as step motor, solenoid valve, heater strip of multi-ported valve, carry out corresponding operation according to presetting, can realize through prior art, no longer give consideration to here.
A water quality detection method using the water quality on-line analyzer is characterized by comprising equipment cleaning, and comprises the following specific steps:
b1: cleaning a metering tube of the metering device by cleaning liquid, wherein the cleaning liquid flows into the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump in sequence to complete the washing of the metering tube;
b2: and C, cleaning the reaction tube on the basis of the step B1, pumping the cleaning liquid to the metering tube by the peristaltic pump in a positive rotation mode, pumping the cleaning liquid in the metering tube to the reaction tube through the multi-way valve in a reverse rotation mode, cleaning the reaction tube, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to the waste liquid recovery device through the multi-way valve by means of self gravity.
B2 also comprises a cleaning liquid which is pumped to the reaction tube through a multi-way valve, and the reaction tube is cleaned through ultrasonic oscillation;
the equipment cleaning also comprises a step B3: and sealing the reaction tube, heating and sterilizing.
B2 further comprises a peristaltic pump reversing to pump out the waste liquid in the reaction tube, and discharging the waste liquid to a waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump.
The water quality detection method also comprises sampling after equipment cleaning, and the specific steps are as follows:
(1) and placing the reagent and/or the bacterial culture solution into different liquid storage containers. The reagent can be selected according to actual detection items, can be a potassium dichromate solution, strong sulfuric acid, silver sulfate and the like, and the bacteria culture solution can be a culture solution of escherichia coli.
(2) The water at the water source is sampled through the peristaltic pump and the multi-way valve, and the peristaltic pump reversely pumps the water sample into the reaction tube after the water sample is quantified through the metering tube.
(3) And appropriate reagent or bacteria culture solution is pumped through the multi-way valve and the peristaltic pump, and after the reagent or the bacteria culture solution is quantified through the metering tube, the peristaltic pump reversely pumps the reagent or the bacteria culture solution into the reaction tube.
The water quality detection method also comprises the detection after sampling, and when the reaction tube is filled with a water sample and a reagent, the water quality detection method comprises the following specific steps:
(1) (ii) a And replacing the light source emitter and the light source receiver consistent with the item to be tested.
(2): the reaction tube was sealed and then heated. When the reactor works, the two electromagnetic valves are closed, and a closed high-pressure heating space is formed in the reaction tube along with the continuous heating of the heating wires.
(3): and digesting the solution by using the reaction tube. The temperature inside the reaction tube is rapidly increased and kept at a certain temperature, and the specific temperature can be determined according to actual detection items. For example, when COD is detected, the temperature is generally 160 ℃, so that the reaction speed can be increased, and the digestion reaction can be completed within 20 minutes. When detecting total phosphorus and total nitrogen, only the temperature needs to be changed, and the three can be detected by digestion colorimetry.
(4): carrying out color comparison and reading data; after the digestion reaction is finished, starting the light source emitter and the light source receiver to conduct color comparison after the temperature reaches the room temperature, and obtaining data. The light source emitter transmits light beams to the reaction tube, the solution with higher concentration of COD or total phosphorus or total nitrogen has less light beams received by the light source receiver at the other end, the converted voltage value is lower,
(5): the reaction tube is communicated with a waste liquid recovery device through a multi-way valve, and the digested waste liquid is discharged to the waste liquid recovery device by gravity; the solenoid valve at the lower part is opened to discharge the waste liquid.
The water quality detection method also comprises the detection after sampling, and when the reaction tube is filled with a water sample and a culture solution, the concrete steps are as follows:
(1) the light source emitter and the light source receiver consistent with the item to be measured are replaced.
(2): the reaction tube was sealed and then heated. And (4) closing the two electromagnetic valves, and heating by the heating wires, wherein the heating temperature can be set according to the cultured bacteria. For example, when Escherichia coli is cultured, the heating temperature is generally 37 ℃.
(3): the bacteria culture is performed using a reaction tube.
(4): after the incubation was completed, the assay data was obtained. And starting the light source transmitter and the light source receiver for detection to obtain detection data.
(5): after reading, the waste liquid is discharged by gravity.
A water quality detection method is characterized by comprising equipment cleaning, and comprises the following specific steps:
s1: cleaning a metering tube of the metering device by cleaning liquid, wherein the cleaning liquid flows into the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump in sequence to complete the washing of the metering tube;
s2: and (4) cleaning the reaction tube on the basis of the completion of the step (S1), pumping the cleaning solution into the metering tube by forward rotation of the peristaltic pump, pumping the cleaning solution in the metering tube into the reaction tube by backward rotation of the peristaltic pump through the multi-way valve to complete the cleaning of the reaction tube, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to the waste liquid recovery device through the multi-way valve by means of the self gravity of the cleaning waste liquid.
The S2 also comprises the steps that cleaning fluid is pumped to the reaction tube through the multi-way valve, and the reaction tube is cleaned through ultrasonic oscillation;
the apparatus cleaning further includes step S3: and sealing the reaction tube, heating and sterilizing.
S2 also includes that the peristaltic pump reverses to pump out the waste liquid in the reaction tube, and the waste liquid is discharged to the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump. When the waste liquid is discharged by gravity, the waste liquid is discharged with low efficiency, so that the discharge can be assisted by a peristaltic pump, and the emptying of the reaction tube is accelerated.
The water quality detection method also comprises sampling after equipment cleaning, and the specific steps are as follows:
(1) and placing the reagent and/or the bacterial culture solution into different liquid storage containers. The reagent can be selected according to actual detection items, can be a potassium dichromate solution, strong sulfuric acid, silver sulfate and the like, and the bacteria culture solution can be a culture solution of escherichia coli.
(2) Sampling water from a water source, and quantitatively feeding the water sample into a reaction tube.
(3) The reagent or the bacteria culture solution enters the reaction tube after being quantified.
The water quality detection method also comprises the detection after sampling, and when the reaction tube is filled with a water sample and a reagent, the water quality detection method comprises the following specific steps:
(1) (ii) a And replacing the light source emitter and the light source receiver consistent with the item to be tested.
(2): the reaction tube was sealed and then heated.
(3): and digesting the solution by using the reaction tube. The temperature in the reaction tube is rapidly increased and kept at a certain temperature, generally 160 ℃, so that the reaction speed can be increased, and the digestion reaction can be completed in 20 minutes generally. For detecting COD, total phosphorus, total nitrogen and the like, digestion colorimetry can be adopted for detection.
(4): carrying out color comparison and reading data; after the digestion reaction is finished, starting the light source emitter and the light source receiver to conduct color comparison after the temperature reaches the room temperature, and obtaining data. The light source emitter transmits light beams to the reaction tube, the solution with higher concentration of COD or total phosphorus or total nitrogen has less light beams received by the light source receiver at the other end, the converted voltage value is lower,
(5): after reading, the waste liquid is discharged by gravity.
The water quality detection method also comprises the following steps of detection after sampling, and when the reaction tube is filled with a water sample and a bacteria culture solution, the method comprises the following specific steps:
(1): after the bacterial culture solution is quantified, the bacterial culture solution enters a reaction tube;
(2): the reaction tube was sealed and then heated. The bacteria are generally cultured by heating to 37 ℃.
(3): the bacteria culture is performed using a reaction tube.
(4): after the incubation was completed, the assay data was obtained. And starting the light source transmitter and the light source receiver for detection to obtain detection data.
(5) (ii) a After reading, the waste liquid is discharged by gravity.
Because in this application including upper end infrared geminate transistor and the infrared geminate transistor of lower extreme in the metering device, consequently, can have the fault range that the signal judged among the online analyzer of quality of water according to the infrared geminate transistor of upper end and the infrared geminate transistor of lower extreme, the trouble divide into: sampling failures, component failures, and reagent failures, where component failures are typically failures of nine-way valves, peristaltic pumps, and the like. The method comprises the following specific steps:
when the lower end infrared pair tube has no signal and the upper end infrared pair tube has no signal, the fault is a component fault and/or a sampling fault;
when the lower infrared geminate transistor has no signal and the upper infrared geminate transistor has a signal, the fault of the part is determined;
when the lower infrared pair tube has a signal and the upper infrared pair tube has a signal, the operation is normal;
when the lower end infrared pair tube has a signal and the upper end infrared pair tube has no signal, the fault is a component fault and/or a reagent fault.
Therefore, the fault range can be reduced, the maintenance is more convenient, namely, when the sampling fault occurs in the condition that the lower-end infrared geminate transistors have no signals, the reagent fault occurs in the condition that the lower-end infrared geminate transistors have signals.
Compared with the prior art, the invention has the beneficial effects that: the equipment is convenient to clean before and after water quality detection, and the detection precision is improved; the waste liquid can be recycled; the water sample can be automatically collected; can be used for detecting COD or total phosphorus or total nitrogen and Escherichia coli.
Drawings
FIG. 1 is a flow chart of the present invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a partially enlarged view of fig. 2 at B.
Fig. 5 is a partially enlarged view of C in fig. 2.
Fig. 6 is a schematic structural diagram of the metering device.
Fig. 7 is a schematic structural view of a columnar fixture.
FIG. 8 is a schematic view of the structure of the reaction apparatus.
Fig. 9 is a flowchart of the failure determination.
Wherein the reference numerals are: 1. a chassis; 2. a reaction device; 3. a metering device; 4. a peristaltic pump; 5. a multi-way valve; 6. a reservoir; 7. a sampling assembly; 201. a frame type frame; 202. an electromagnetic valve; 203. a visor; 204. a mounting member; 205. a threaded hole; 206. a reaction tube; 207. a connecting member; 301. a mounting frame; 302. a glass metering tube; 303. a plug; 305. a cylindrical fixing member; 306. a flange; 307. a stepped hole; 701. a water inlet pipe; 702. a water outlet pipe; 703. a pressure relief pipe; 704. a sampling tube; 705. a sampling pipe joint; 706. a drain valve; 707. and (3) a filter.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
The first embodiment is as follows:
referring to fig. 1-8, an online water quality analyzer includes a case 1, a multi-way valve 5 disposed inside the case 1, and a metering device 3, a reaction device 2, a waste liquid recovery device, and a plurality of liquid storage containers 6 containing different reagents and cleaning liquids, which are respectively connected to the multi-way valve 5;
a peristaltic pump 4 is connected between the waste liquid recovery device and the metering device 3;
the waste liquid recovery device is connected with the upper end of the reaction device 2 through a liquid discharge pipe, and the waste liquid recovery device is positioned below the reaction device 2.
The multi-way valve 5, the metering device 3, the reaction device 2, the waste liquid recovery device, the peristaltic pump 4 and the liquid storage container 6 are connected in a connection relationship by adopting flexible pipes.
The sampling device also comprises a sampling assembly 7 arranged at the lower part of the case 1, wherein the sampling assembly 7 comprises a water inlet pipe 701, a water outlet pipe 702 and a pressure relief pipe 703 which are sequentially arranged from top to bottom, one ends of the insides of the water inlet pipe 701 and the water outlet pipe 702 are both communicated with the sampling pipe 704, and the water inlet pipe 701 is communicated with a water source through a water pump;
the pressure relief pipe 703 is communicated with the sampling pipe 704 and the communication position is higher than the communication position of the water inlet pipe 701 and the sampling pipe 704 and the communication position of the water outlet pipe 702 and the sampling pipe 704, and valves are arranged on the water inlet pipe 701 and the water outlet pipe 702;
the sampling tube 704 communicates with the multi-way valve 5.
A drain valve 706 is arranged on the sampling pipe 704 and below the communication part of the pressure relief pipe 703 and the sampling pipe 704. The pipe diameter of the pressure relief pipe 703 is larger than that of the water inlet pipe 701 and the water outlet pipe 702.
Water at a water source enters from the water inlet pipe 701 through the water pump, most of water directly flows out from the water outlet pipe 702, and a small part of water enters the sampling pipe 704. due to the existence of the pressure relief pipe 703, when the liquid level in the sampling pipe 704 is higher than the communication position of the pressure relief pipe 703 and the sampling pipe 704, the water flows out from the pressure relief pipe 703, so that the water level keeps balance, and when the pressure relief pipe 703 cannot be discharged in time, the water can be discharged by opening the water discharge valve 706.
The sampling pipe 704 is connected with the multi-way valve 5 through a hose, and the water inlet end of the hose is lower than the communication part of the pressure relief pipe 703 and the sampling pipe 704. The upper portion of the sampling tube 704 is made of a transparent material, so that it is possible to observe whether water enters.
The intersection of inlet tube 701 and outlet pipe 702 is equipped with Y type filter 707, and Y type filter 707 communicates through tubule and sampling pipe joint 705, and Y type filter 707 can carry out filtration to water, prevents that impurity from causing the jam in getting into the multi-way valve.
The metering device 3 comprises a mounting frame 301, a glass metering tube 302 is arranged on the mounting frame 301, the upper end and the lower end of the glass metering tube 302 extend out of the mounting frame 301 and are provided with hollow plugs 303, the upper plugs 303 are communicated with the peristaltic pump 4, and the lower plugs are communicated with the multi-way valve 5;
infrared geminate transistors are symmetrically arranged on the mounting rack 301 and positioned on the outer sides of the upper end and the lower end of the glass metering tube 302;
the mount 301 is disposed inside the cabinet 1.
The specific working process of the metering device 3 is that a reagent or a detected water sample is pressed into the metering tube through the multi-way valve by positive rotation of the peristaltic pump 4, and with the continuous rise of the liquid level, when the liquid reaches the position of the upper infrared pair tube, the infrared ray is changed to generate an electric signal, and then the suction is stopped; the peristaltic pump 4 is reversed, the liquid sucked in the glass metering tube 302 enters the reaction device 2 through the multi-way valve, and an electric signal is generated when the liquid level reaches the position of the lower infrared pair tube along with the continuous reduction of the liquid level, and the discharge is stopped at the moment; the liquid level difference between the infrared pair of tubes is a fixed metering value.
The position that corresponds with infrared geminate transistor on the mounting bracket 301 is provided with the column mounting 305, column mounting 305 one end is provided with flange 306, the other end stretches into inside and the top of mounting bracket 301 and on glass metering tube 302 and be provided with the outer wall complex curved surface with glass metering tube 302, flange 306 is fixed in the outside of mounting bracket 301, it is provided with shoulder hole 307 to run through in the column mounting 305, infrared geminate transistor sets up the major diameter end at shoulder hole 307.
The reaction device 2 comprises a frame 201, a reaction tube 206 is arranged in the frame 201, two ends of the reaction tube 206 extend out of the frame 201, an electromagnetic valve 302 is arranged at the extending end, hollow mounting pieces 204 are coaxially arranged on the frame 301 and positioned at two sides of the reaction tube 206, the mounting pieces 204 are arranged on the frame 201, a light source transmitter is detachably arranged in one mounting piece 204, and a light source receiver is detachably arranged in the other mounting piece 204; the light source emitter and the light source receiver can be replaced according to different detection items, generally adopting threaded connection, and a threaded hole 205 matched with the light source emitter and the light source receiver is reserved on the mounting piece 204.
The upper electromagnetic valve is connected with the waste liquid recovery device, and the lower electromagnetic valve 202 is communicated with the multi-way valve 5;
any open end of the frame 201 is fixed inside the cabinet 1, and the other end is provided with a shading plate 203.
The two ends of the reaction tube 206 are provided with connecting pieces with external threads, the connecting pieces are arranged on the frame through threaded connection, and the electromagnetic valve is arranged on the connecting pieces through threaded connection.
The outside winding of reaction tube 206 has the heater strip, still is provided with temperature sensor and ultrasonic wave module on the inner wall of reaction tube 206, utilizes the vibration of ultrasonic wave to wash the reaction tube, controls the temperature through temperature sensor.
The temperature sensor adopts PT100, the resistance value of the temperature sensor can be increased along with the increase of the temperature, and the PID algorithm is adopted to control the heating wires to heat, so that the temperature can be better controlled to be the designated temperature, and the temperature can be prevented from being suddenly increased or decreased.
The multi-way valve 5 preferably adopts a nine-way valve, and the multi-way valve 5 controls the slide hole to turn to different directions through a stepping motor so as to realize water sample, distilled water and different reagents. A stepper motor is an actuator that converts electrical pulses into angular displacements. When the stepping motor driving circuit receives a pulse signal, the stepping motor is driven to rotate by a fixed angle, and the rotating angle can be controlled by the pulse quantity given to the stepping motor driving circuit, so that the purpose of positioning is achieved.
Still include to multi-ported valve 5, metering device 3, reaction unit 2, waste liquid recovery unit, peristaltic pump 4 and other valves carry out the central controller controlled, central controller uses STM32F103RCT6 chip as the core, can realize automatic sampling, automatic reaction, self-cleaning, temperature control, online debugging, signal acquisition and touch-sensitive screen communication function, to the control of execution units such as step motor of multi-ported valve, the solenoid valve, the heater strip, carry out corresponding operation according to presetting, can realize through prior art, no longer describe here.
Example two:
a water quality detection method of an application embodiment I water quality on-line analyzer is characterized by comprising equipment cleaning, and comprises the following specific steps:
b1: cleaning a metering tube of the metering device by cleaning liquid, wherein the cleaning liquid flows into the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump in sequence to complete the washing of the metering tube;
b2: and C, cleaning the reaction tube on the basis of the step B1, pumping the cleaning liquid to the metering tube by the peristaltic pump in a positive rotation mode, pumping the cleaning liquid in the metering tube to the reaction tube through the multi-way valve in a reverse rotation mode, cleaning the reaction tube, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to the waste liquid recovery device through the multi-way valve by means of self gravity.
B2 also comprises a cleaning liquid which is pumped to the reaction tube through a multi-way valve, and the reaction tube is cleaned through ultrasonic oscillation;
the equipment cleaning also comprises a step B3: and sealing the reaction tube, heating and sterilizing.
B2 further comprises a peristaltic pump reversing to pump out the waste liquid in the reaction tube, and discharging the waste liquid to a waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump.
The water quality detection method also comprises sampling after equipment cleaning, and the specific steps are as follows:
(1) and placing the reagent and/or the bacterial culture solution into different liquid storage containers. The reagent can be selected according to actual detection items, can be a potassium dichromate solution, strong sulfuric acid, silver sulfate and the like, and the bacteria culture solution can be a culture solution of escherichia coli.
(2) The water at the water source is sampled through the peristaltic pump and the multi-way valve, and the peristaltic pump reversely pumps the water sample into the reaction tube after the water sample is quantified through the metering tube. The multi-way valve may be connected by a sampling tube,
(3) and appropriate reagent or bacteria culture solution is pumped through the multi-way valve and the peristaltic pump, and after the reagent or the bacteria culture solution is quantified through the metering tube, the peristaltic pump reversely pumps the reagent or the bacteria culture solution into the reaction tube.
The water quality detection method also comprises detection after sampling, and comprises two conditions:
the first condition is as follows: when a water sample and a reagent are arranged in the reaction tube, the method comprises the following specific steps:
(1) (ii) a And replacing the light source emitter and the light source receiver consistent with the item to be tested.
(2): the reaction tube was sealed and then heated. When the reactor works, the two electromagnetic valves are closed, and a closed high-pressure heating space is formed in the reaction tube along with the continuous heating of the heating wires.
(3): and digesting the solution by using the reaction tube. The temperature inside the reaction tube is rapidly increased and kept at a certain temperature, and the specific temperature can be determined according to actual detection items. For example, when COD is detected, the temperature is generally 160 ℃, so that the reaction speed can be increased, and the digestion reaction can be completed within 20 minutes. When detecting total phosphorus and total nitrogen, only the temperature needs to be changed, and the three can be detected by digestion colorimetry.
(4): carrying out color comparison and reading data; after the digestion reaction is finished, starting the light source emitter and the light source receiver to conduct color comparison after the temperature reaches the room temperature, and obtaining data. The light source emitter transmits light beams to the reaction tube, the solution with higher concentration of COD or total phosphorus or total nitrogen has less light beams received by the light source receiver at the other end, the converted voltage value is lower,
(5): the reaction tube is communicated with a waste liquid recovery device through a multi-way valve, and the digested waste liquid is discharged to the waste liquid recovery device by gravity; the solenoid valve at the lower part is opened to discharge the waste liquid.
The second situation: when a water sample and a culture solution are arranged in the reaction tube, the method comprises the following specific steps:
(1) the light source emitter and the light source receiver consistent with the item to be measured are replaced.
(2): the reaction tube was sealed and then heated. The heating temperature may be set according to the bacteria to be cultured. For example, when Escherichia coli is cultured, the heating temperature is generally 37 ℃.
(3): the bacteria culture is performed using a reaction tube. Bacterial cultures are commonly used for the detection of E.coli.
(4): after the incubation was completed, the assay data was obtained. And starting the light source transmitter and the light source receiver for detection to obtain detection data.
(5): after reading, the waste liquid is discharged by gravity.
Firstly, performing the first condition, directly performing the second condition after cleaning by equipment, and during cleaning, adopting deionized water as a cleaning solution; and in the second condition, the first condition can be directly carried out after the equipment is cleaned, and in the cleaning process, the cleaning solution is distilled water.
Example three:
a water quality detection method is characterized by comprising equipment cleaning, and comprises the following specific steps:
s1: cleaning a metering tube of the metering device by cleaning liquid, wherein the cleaning liquid flows into the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump in sequence to complete the washing of the metering tube;
s2: and (4) cleaning the reaction tube on the basis of the completion of the step (S1), pumping the cleaning solution into the metering tube by forward rotation of the peristaltic pump, pumping the cleaning solution in the metering tube into the reaction tube by backward rotation of the peristaltic pump through the multi-way valve to complete the cleaning of the reaction tube, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to the waste liquid recovery device through the multi-way valve by means of the self gravity of the cleaning waste liquid.
The S2 also comprises the steps that cleaning fluid is pumped to the reaction tube through the multi-way valve, and the reaction tube is cleaned through ultrasonic oscillation;
the apparatus cleaning further includes step S3: and sealing the reaction tube, heating and sterilizing.
S2 also includes that the peristaltic pump reverses to pump out the waste liquid in the reaction tube, and the waste liquid is discharged to the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump.
The water quality detection method also comprises sampling after equipment cleaning, and the specific steps are as follows:
(1) and placing the reagent and/or the bacterial culture solution into different liquid storage containers. The reagent can be selected according to actual detection items, can be a potassium dichromate solution, strong sulfuric acid, silver sulfate and the like, and the bacteria culture solution can be a culture solution of escherichia coli.
(2) Sampling water from a water source, and quantitatively feeding the water sample into a reaction tube.
(3) The reagent or the bacteria culture solution enters the reaction tube after being quantified.
The water quality detection method also comprises detection after sampling, and comprises two conditions:
the first condition is as follows: when a water sample and a reagent are arranged in the reaction tube, the method comprises the following specific steps:
(1) (ii) a And replacing the light source emitter and the light source receiver consistent with the item to be tested.
(2): the reaction tube was sealed and then heated.
(3): and digesting the solution by using the reaction tube. The temperature inside the reaction tube is rapidly increased and kept at a certain temperature, and the specific temperature can be determined according to actual detection items. For example, when COD is detected, the temperature is generally 160 ℃, so that the reaction speed can be increased, and the digestion reaction can be completed within 20 minutes. When detecting total phosphorus and total nitrogen, only the temperature needs to be changed, and the three can be detected by digestion colorimetry.
(4): carrying out color comparison and reading data; after the digestion reaction is finished, starting the light source emitter and the light source receiver to conduct color comparison after the temperature reaches the room temperature, and obtaining data. The light source emitter transmits light beams to the reaction tube, the solution with higher concentration of COD or total phosphorus or total nitrogen has less light beams received by the light source receiver at the other end, the converted voltage value is lower,
(5): after reading, the waste liquid is discharged by gravity.
The second situation: when a water sample and a bacteria culture solution are arranged in the reaction tube, the method comprises the following specific steps:
(1) the light source emitter and the light source receiver consistent with the item to be measured are replaced.
(2): the reaction tube was sealed and then heated. The heating temperature may be set according to the bacteria to be cultured. For example, when Escherichia coli is cultured, the heating temperature is generally 37 ℃.
(3): the bacteria culture is performed using a reaction tube.
(4): after the incubation was completed, the assay data was obtained. And starting the light source transmitter and the light source receiver for detection to obtain detection data.
(5): after reading, the waste liquid is discharged by gravity.
Firstly, performing the first condition, directly performing the second condition after cleaning by equipment, and during cleaning, adopting deionized water as a cleaning solution; and in the second condition, the first condition can be directly carried out after the equipment is cleaned, and in the cleaning process, the cleaning solution is distilled water.
Example four:
on the basis of the first embodiment, one liquid storage container is filled with distilled water, one liquid storage container is filled with deionized water, one liquid storage container is filled with escherichia coli culture solution, and the other liquid storage containers are filled with reagents which can be potassium dichromate solution, strong sulfuric acid and silver sulfate.
A water quality detection method comprises the following specific steps:
1. cleaning equipment before detection: in particular to a method for preparing a high-performance nano-silver alloy,
(11) cleaning a metering tube of the metering device by distilled water, and enabling the distilled water to flow into a waste liquid recovery device through a multi-way valve, the metering tube and a peristaltic pump in sequence to complete washing of the metering tube;
(12): and (3) cleaning the reaction tube on the basis of the step (11), pumping distilled water into the metering tube by the peristaltic pump in a positive rotation mode, pumping the distilled water in the metering tube to the reaction tube through the multi-way valve in a reverse rotation mode, cleaning the reaction tube, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to a waste liquid recovery device through the multi-way valve by means of self gravity.
2. The method comprises the following specific steps of:
(21) the water at the water source is sampled through the peristaltic pump and the multi-way valve, and the peristaltic pump reversely pumps the water sample into the reaction tube after the water sample is quantified through the metering tube. The multi-way valve may be connected by a sampling tube,
(22) and appropriate reagent is pumped through the multi-way valve and the peristaltic pump, and the peristaltic pump reversely pumps the reagent into the reaction tube after the reagent is quantified through the metering tube.
3. The COD detection after the sampling is carried out, and the specific steps are as follows:
(31) and replacing the light source emitter and the light source receiver corresponding to the COD.
(32) And heating after the reaction tube is sealed. When the reactor works, the two electromagnetic valves are closed, and a closed high-pressure heating space is formed in the reaction tube along with the continuous heating of the heating wires.
(33) And digesting the solution by using the reaction tube. The temperature in the reaction tube is rapidly increased and kept at a certain temperature, generally 160 ℃, so that the reaction speed can be increased, and the digestion reaction can be completed in 20 minutes generally. For detecting COD, total phosphorus, total nitrogen and the like, digestion colorimetry can be adopted for detection.
(34) Carrying out color comparison and reading data; after the digestion reaction is finished, starting the light source emitter and the light source receiver to conduct color comparison after the temperature reaches the room temperature, and obtaining data. The light source emitter transmits light beams to the reaction tube, the solution with higher concentration of COD or total phosphorus or total nitrogen has less light beams received by the light source receiver at the other end, the converted voltage value is lower,
(35) the reaction tube is communicated with a waste liquid recovery device through a multi-way valve, and the digested waste liquid is discharged to the waste liquid recovery device by gravity; the solenoid valve at the lower part is opened to discharge the waste liquid.
4. And cleaning equipment after COD detection, specifically comprising the following steps:
(41) cleaning a metering tube of the metering device by deionized water, and enabling the deionized water to sequentially flow into a waste liquid recovery device through a multi-way valve, the metering tube and a peristaltic pump to complete washing of the metering tube;
(42) cleaning the reaction tube on the basis of the step (41), pumping deionized water to the metering tube by forward rotation of the peristaltic pump, pumping the deionized water in the metering tube to the reaction tube by backward rotation of the peristaltic pump through the multi-way valve, cleaning the reaction tube by ultrasonic oscillation, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to a waste liquid recovery device through the multi-way valve by means of self gravity;
(43) and sealing and heating the reaction tube for sterilization.
5. And (2) sampling after the second equipment is cleaned, and the specific steps are as follows:
(51): the reaction tube is used for taking water from a water sample in the liquid storage container through the peristaltic pump and the multi-way valve at normal temperature, and the water sample is reversely pumped into the reaction tube through the peristaltic pump after being quantified through the metering tube;
(52): extracting a proper escherichia coli culture solution through a multi-way valve and a peristaltic pump, and after the escherichia coli culture solution is quantified through a metering tube, reversely pumping the escherichia coli culture solution into a reaction tube through the peristaltic pump;
6. and E, detecting the sampled Escherichia coli by the second sampling method, which comprises the following specific steps:
(61) (ii) a Replacing a light source emitter and a light source receiver consistent with the detection of the escherichia coli;
(62): the reaction tube was sealed and then heated. The two solenoid valves were closed and heated to 37 ℃ by a heating wire to culture the bacteria.
(63): the bacteria culture is performed using a reaction tube.
(64): after the incubation was completed, the assay data was obtained. And starting the light source transmitter and the light source receiver for detection to obtain detection data.
(65): after reading, the waste liquid is discharged by gravity.
7. And thirdly, cleaning equipment after detecting escherichia coli, and specifically comprises the following steps:
(71) cleaning a metering tube of the metering device by distilled water, and enabling the distilled water to flow into a waste liquid recovery device through a multi-way valve, the metering tube and a peristaltic pump in sequence to complete washing of the metering tube;
(72): and (5) cleaning the reaction tube on the basis of the step (71), pumping distilled water into the metering tube by forward rotation of the peristaltic pump, pumping the distilled water in the metering tube to the reaction tube by backward rotation of the peristaltic pump through the multi-way valve to complete cleaning of the reaction tube, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to a waste liquid recovery device through the multi-way valve by means of self gravity.
Example five:
referring to fig. 1 to 9, since the metering device in the present application includes the upper end infrared pair transistor and the lower end infrared pair transistor, it is possible to determine the fault range in the water quality on-line analyzer according to whether the upper end infrared pair transistor and the lower end infrared pair transistor have signals, and the fault is: sampling failures, component failures, and reagent failures, where component failures are typically failures of nine-way valves, peristaltic pumps, and the like.
Therefore, in the above embodiments, the fault can be determined by the following method:
the method comprises the following specific steps:
when the lower end infrared pair tube has no signal and the upper end infrared pair tube has no signal, the fault is a component fault and/or a sampling fault;
when the lower infrared geminate transistor has no signal and the upper infrared geminate transistor has a signal, the fault of the part is determined;
when the lower infrared pair tube has a signal and the upper infrared pair tube has a signal, the operation is normal;
when the lower end infrared pair tube has a signal and the upper end infrared pair tube has no signal, the fault is a component fault and/or a reagent fault.
Therefore, the fault range can be reduced, the maintenance is more convenient, namely, when the sampling fault occurs in the condition that the lower-end infrared geminate transistors have no signals, the reagent fault occurs in the condition that the lower-end infrared geminate transistors have signals.
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, e.g. as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (10)
1. An online water quality analyzer is characterized by comprising a case, a multi-way valve arranged in the case, a metering device, a reaction device, a waste liquid recovery device and a plurality of liquid storage containers filled with different reagents and cleaning liquids, wherein the metering device, the reaction device, the waste liquid recovery device and the plurality of liquid storage containers are respectively connected with the multi-way valve;
a peristaltic pump is connected between the waste liquid recovery device and the metering device;
the waste liquid recovery device is connected with the upper end of the reaction device through a liquid discharge pipe, and the waste liquid recovery device is positioned below the reaction device.
2. The online water quality analyzer according to claim 1, further comprising a sampling assembly disposed at the lower portion of the case, wherein the sampling assembly comprises a water inlet pipe, a water outlet pipe and a pressure relief pipe which are sequentially arranged from top to bottom, one ends of the insides of the water inlet pipe and the water outlet pipe are both communicated with the sampling pipe, and the water inlet pipe is communicated with a water source through a water pump;
the pressure relief pipe is communicated with the sampling pipe, the communication position of the pressure relief pipe is higher than the communication position of the water inlet pipe and the sampling pipe and the communication position of the water outlet pipe and the sampling pipe, and valves are arranged on the water inlet pipe and the water outlet pipe;
the sampling pipe is communicated with the multi-way valve.
3. The water quality on-line analyzer according to any one of claims 1-2, wherein the metering device comprises a mounting frame, a glass metering tube is arranged on the mounting frame, the upper end and the lower end of the glass metering tube both extend out of the mounting frame and are provided with hollow plugs, the upper plug is communicated with the peristaltic pump, and the lower plug is communicated with the multi-way valve;
infrared geminate transistors are symmetrically arranged on the mounting rack and positioned on the outer sides of the upper end and the lower end of the glass metering tube;
the mounting rack is arranged inside the case.
4. The online water quality analyzer according to claim 3, wherein the reaction device comprises a frame, a reaction tube is arranged in the frame, two ends of the reaction tube extend out of the frame, electromagnetic valves are arranged at the extended ends of the reaction tube, hollow installation parts are coaxially arranged on the frame and positioned at two sides of the reaction tube, the installation parts are arranged on the frame, a light source transmitter is detachably arranged in one installation part, and a light source receiver is detachably arranged in the other installation part;
the upper electromagnetic valve is connected with the waste liquid recovery device, and the lower electromagnetic valve is communicated with the multi-way valve;
any open end of the frame is fixed in the case, and the other end of the frame is provided with a light screen;
the outside winding of reaction tube has the heater strip, still be provided with temperature sensor and ultrasonic wave module on the inner wall of reaction tube.
5. A water quality detection method using the water quality on-line analyzer according to claim 4, which is characterized by comprising equipment cleaning, and comprises the following specific steps:
b1: cleaning a metering tube of the metering device by cleaning liquid, wherein the cleaning liquid flows into the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump in sequence to complete the washing of the metering tube;
b2: and C, cleaning the reaction tube on the basis of the step B1, pumping the cleaning liquid to the metering tube by the peristaltic pump in a positive rotation mode, pumping the cleaning liquid in the metering tube to the reaction tube through the multi-way valve in a reverse rotation mode, cleaning the reaction tube, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to the waste liquid recovery device through the multi-way valve by means of self gravity.
6. A water quality detecting method using the water quality on-line analyzer according to claim 4, wherein the water quality detecting method comprises the steps of,
b2 also comprises a cleaning liquid which is pumped to the reaction tube through a multi-way valve, and the reaction tube is cleaned through ultrasonic oscillation;
the equipment cleaning also comprises a step B3: and sealing the reaction tube, heating and sterilizing.
7. The water quality detection method using the water quality on-line analyzer according to claim 4, wherein the water quality analyzer comprises a water quality analyzer body; b2 further comprises a peristaltic pump reversing to pump out the waste liquid in the reaction tube, and discharging the waste liquid to a waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump.
8. A water quality detection method is characterized by comprising equipment cleaning, and comprises the following specific steps:
s1: cleaning a metering tube of the metering device by cleaning liquid, wherein the cleaning liquid flows into the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump in sequence to complete the washing of the metering tube;
s2: and (4) cleaning the reaction tube on the basis of the completion of the step (S1), pumping the cleaning solution into the metering tube by forward rotation of the peristaltic pump, pumping the cleaning solution in the metering tube into the reaction tube by backward rotation of the peristaltic pump through the multi-way valve to complete the cleaning of the reaction tube, stopping the peristaltic pump after cleaning, and discharging the cleaning waste liquid to the waste liquid recovery device through the multi-way valve by means of the self gravity of the cleaning waste liquid.
9. The water quality detection method according to claim 8, wherein S2 further comprises pumping a cleaning solution to the reaction tube through the multi-way valve, and cleaning the reaction tube by ultrasonic oscillation;
the apparatus cleaning further includes step S3: and sealing the reaction tube, heating and sterilizing.
10. The water quality detecting method according to claim 9, characterized in that; s2 also includes that the peristaltic pump reverses to pump out the waste liquid in the reaction tube, and the waste liquid is discharged to the waste liquid recovery device through the multi-way valve, the metering tube and the peristaltic pump.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984696A (en) * | 2021-10-29 | 2022-01-28 | 成都奥谱勒仪器有限公司 | Automatic online synchronous detection spectrometer system for multiple parameters of water quality |
| WO2023020144A1 (en) * | 2021-08-20 | 2023-02-23 | 南京南瑞水利水电科技有限公司 | Anti-turbidity-interference water quality analysis device and method |
| CN116519610A (en) * | 2023-05-11 | 2023-08-01 | 原生代(青岛)科技有限公司 | Nutritive salt in-situ analysis device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201622236U (en) * | 2010-02-08 | 2010-11-03 | 西北农林科技大学 | Continuous near infrared detection flow cell with changeable optical path |
| JP2016042970A (en) * | 2014-08-21 | 2016-04-04 | ブルークロス株式会社 | Treatment method for waste fluid including body fluid, and treatment device thereof |
| CN205484014U (en) * | 2016-01-27 | 2016-08-17 | 四川省华检技术检测服务有限公司 | Little volume automatically cleaning water quality testing device based on spectral analysis |
| CN106383109A (en) * | 2016-08-25 | 2017-02-08 | 深圳市绿恩环保技术有限公司 | COD online monitor |
| CN106442087A (en) * | 2016-10-28 | 2017-02-22 | 江苏大学 | Automatic chemical feeding and mixing method and device for detecting nitrite nitrogen content |
| CN206431040U (en) * | 2017-02-14 | 2017-08-22 | 马鞍山市桓泰环保设备有限公司 | A kind of Automatic On-line ammonia Nitrogen Analyzer |
| CN206431125U (en) * | 2017-02-14 | 2017-08-22 | 马鞍山市桓泰环保设备有限公司 | Total phosphorus on-line computing model in a kind of water |
| CN107655881A (en) * | 2017-09-06 | 2018-02-02 | 安徽英凯环境技术有限公司 | A kind of high-precision water quality online automatic monitor |
| CN207780006U (en) * | 2017-12-22 | 2018-08-28 | 贵阳学通仪器仪表有限公司 | A kind of Water Test Kits with automatic water-supply pipeline |
-
2021
- 2021-03-01 CN CN202110226787.3A patent/CN113049307A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201622236U (en) * | 2010-02-08 | 2010-11-03 | 西北农林科技大学 | Continuous near infrared detection flow cell with changeable optical path |
| JP2016042970A (en) * | 2014-08-21 | 2016-04-04 | ブルークロス株式会社 | Treatment method for waste fluid including body fluid, and treatment device thereof |
| CN205484014U (en) * | 2016-01-27 | 2016-08-17 | 四川省华检技术检测服务有限公司 | Little volume automatically cleaning water quality testing device based on spectral analysis |
| CN106383109A (en) * | 2016-08-25 | 2017-02-08 | 深圳市绿恩环保技术有限公司 | COD online monitor |
| CN106442087A (en) * | 2016-10-28 | 2017-02-22 | 江苏大学 | Automatic chemical feeding and mixing method and device for detecting nitrite nitrogen content |
| CN206431040U (en) * | 2017-02-14 | 2017-08-22 | 马鞍山市桓泰环保设备有限公司 | A kind of Automatic On-line ammonia Nitrogen Analyzer |
| CN206431125U (en) * | 2017-02-14 | 2017-08-22 | 马鞍山市桓泰环保设备有限公司 | Total phosphorus on-line computing model in a kind of water |
| CN107655881A (en) * | 2017-09-06 | 2018-02-02 | 安徽英凯环境技术有限公司 | A kind of high-precision water quality online automatic monitor |
| CN207780006U (en) * | 2017-12-22 | 2018-08-28 | 贵阳学通仪器仪表有限公司 | A kind of Water Test Kits with automatic water-supply pipeline |
Non-Patent Citations (1)
| Title |
|---|
| 黄培: "小型移动在线水质监测系统的研究", 《办公自动化》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023020144A1 (en) * | 2021-08-20 | 2023-02-23 | 南京南瑞水利水电科技有限公司 | Anti-turbidity-interference water quality analysis device and method |
| CN113984696A (en) * | 2021-10-29 | 2022-01-28 | 成都奥谱勒仪器有限公司 | Automatic online synchronous detection spectrometer system for multiple parameters of water quality |
| CN116519610A (en) * | 2023-05-11 | 2023-08-01 | 原生代(青岛)科技有限公司 | Nutritive salt in-situ analysis device |
| CN116519610B (en) * | 2023-05-11 | 2023-11-03 | 原生代(青岛)科技有限公司 | Nutritive salt in-situ analysis device |
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