CN114778491A - Heavy metal water quality testing device - Google Patents
Heavy metal water quality testing device Download PDFInfo
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- CN114778491A CN114778491A CN202210373809.3A CN202210373809A CN114778491A CN 114778491 A CN114778491 A CN 114778491A CN 202210373809 A CN202210373809 A CN 202210373809A CN 114778491 A CN114778491 A CN 114778491A
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Abstract
The invention belongs to the technical field of water quality detection, and discloses a heavy metal water quality detector which comprises a pretreatment device, a pre-detection device, a quantitative detection device and a control device; a filter tank and a first stirring piece are arranged in the pretreatment device; the pre-detection device is communicated with the pre-treatment device, and a second stirring piece and a turbidity sensor are arranged in the pre-detection device; the quantitative detection device is communicated with the pretreatment device and is used for detecting the content of heavy metal ions in the water sample to be detected; the control device comprises a controller, a control panel, a display screen body and a data storage module, wherein the control panel, the display screen body and the data storage module are electrically connected with the controller; the controller is respectively and electrically connected with the first stirring piece, the second stirring piece and the turbidity sensor. The invention judges whether the water body to be detected needs quantitative detection or not according to the pre-detection result of the water body to be detected, so that the water quality detection is performed with pertinence and high efficiency, the detection is convenient and quick, the subsequent water sample treatment is guided, and the resource waste caused by the detection of the water body which reaches the standard is avoided.
Description
Technical Field
The invention relates to the technical field of water quality detection, in particular to a heavy metal water quality detection device.
Background
Heavy metal contamination refers to environmental contamination caused by heavy metals or compounds thereof. Heavy metal pollution is mainly reflected in water pollution, in order to avoid the damage of the heavy metal pollution to the ecological environment, the first ' twelve five ' special plan in China, namely ' twelve five ' plan for comprehensive prevention and treatment of heavy metal pollution ', is formally repeated by State hospitals in early 4 months in 2011, and the prevention and treatment plan strives to control 5 kinds of heavy metals (lead, mercury, cadmium, chromium and metalloid arsenic).
In order to strictly control the pollution of heavy metals to water quality, it is very important to accurately detect heavy metals in water with high efficiency, and for this reason, the prior art proposes various heavy metal detection means, such as atomic absorption spectroscopy and inductively coupled plasma, etc., which can detect heavy metal concentration at trace level, but need to test with instruments of thousands to hundreds of thousands of dollars, which are expensive and heavy, require many reagents, and are not suitable for large-scale field surveying.
Therefore, the invention provides a heavy metal water quality detection device.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a heavy metal water quality detection device.
The invention discloses a heavy metal water quality detection device, which is realized by the following technical scheme:
a heavy metal water quality detection device comprises a pretreatment device, a pre-detection device, a quantitative detection device and a control device;
the pretreatment device is respectively provided with a first water inlet and a first water outlet for introducing a water sample to be detected, and the pretreatment device is internally provided with a filter tank and a first stirring piece so as to remove solid suspended matters in the water sample to be detected and keep the water sample to be detected in a uniform water body state all the time during detection;
the pre-detection device is provided with a second water inlet and a second water outlet respectively, the first water inlet is communicated with the first water outlet through a first pipeline, one end of the pre-detection device is provided with a first feed inlet for adding a heavy metal chelating agent, and the pre-detection device is internally provided with a second stirring piece and a turbidity sensor;
a third water inlet is formed in one side of the quantitative detection device, is communicated with the first water outlet through a second pipeline and is used for detecting the content of heavy metal ions in a water sample to be detected;
the control device comprises a controller, and a control panel, a display screen body and a data storage module which are electrically connected with the controller; the controller is respectively and electrically connected with the first stirring piece, the second stirring piece and the turbidity sensor.
Furthermore, the quantitative detection device comprises a detection pool, a medicament storage pool, a condensing lens, a laser generator and a photoelectric sensor;
transparent windows are oppositely arranged on the two side walls of the detection pool, and a third stirring piece and an acoustic sensor are arranged in the detection pool; the third water inlet is arranged on one side of the detection tank, and a second feed inlet is also formed in the detection tank;
an acoustic signal reinforcing agent is placed in the medicament storage pool, a medicament outlet is formed in one side of the medicament storage pool, and the medicament outlet is communicated with the second feed inlet through a third pipeline;
the condenser lens and the photoelectric sensor are both electrically connected with the controller, are respectively arranged on two sides of the detection pool, and are positioned on the same horizontal position with the transparent window;
the laser generator is arranged on one side, away from the detection pool, of the condenser lens and is electrically connected with the controller.
Further, still be provided with the pH detector in the preliminary detection device, the pH detector with controller electric connection.
Furthermore, an installation block is arranged in the quantitative detection device, and the condensing lens is connected to the installation block in a sliding fit manner; and the condensing lens is in transmission connection with a driving piece, and the driving piece is electrically connected with the controller to drive the distance between the condensing lens and the transparent window.
Furthermore, a third control valve is arranged on the third pipeline and electrically connected with the controller.
Furthermore, a first control valve is arranged on the first pipeline and electrically connected with the controller;
and a second control valve is arranged on the second pipeline and is electrically connected with the controller.
Furthermore, a sliding groove is formed in the mounting block; and the condensing lens is provided with a sliding block matched with the sliding groove, and the condensing lens is connected to the mounting block in a sliding fit manner through the sliding block.
Further, the driving piece is an electric telescopic rod.
Further, the filtering tank is horizontally arranged in the pretreatment device, and a plurality of filtering holes are formed in the bottom of the filtering tank; a liquid storage cavity for storing the filtered water sample to be detected is formed between the bottom of the filter tank and the bottom of the pretreatment device, and the first water outlet is formed in the bottom of the liquid storage cavity;
the stirring piece set up in the stock solution intracavity, it is right the water sample after stock solution intracavity filtration handles stirs, makes it remain homogeneous water state throughout when detecting.
Further, a turbidity threshold value is stored in the data storage module, and the turbidity threshold value is the turbidity difference before and after chelation of the heavy metal chelating agent in the water body with the highest allowable heavy metal content in the water quality reaching the standard.
The water inlet is communicated with the first water outlet and the second water outlet on the pre-detection device through a fourth pipeline;
a fourth control valve and a fifth control valve are arranged on the fourth pipeline, and the fourth control valve and the fifth control valve are both electrically connected with the controller;
the fourth control valve is positioned between the first water outlet and the fourth water inlet;
the fifth control valve is positioned between the second water outlet and the fourth water inlet.
The water storage tank is provided with a fifth water outlet at one end, and the fifth water outlet is communicated with the second water inlet and the third water inlet through a fifth pipeline respectively;
a sixth control valve and a seventh control valve are arranged on the fifth pipeline, and the sixth control valve and the seventh control valve are both electrically connected with the controller;
the sixth control valve is positioned between the second water inlet and the fifth water outlet;
the seventh control valve is located between the third water inlet and the fifth water outlet.
Further, controlling means still includes pilot lamp and bee calling organ, pilot lamp and bee calling organ all with controller electric connection.
Further, the heavy metal chelating agent is a DTC heavy metal chelating agent.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a heavy metal water quality detection device, which comprises a pretreatment device, a pre-detection device, a quantitative detection device and a control device, wherein the pretreatment device is used for carrying out pretreatment on water; the water sample to be detected enters the pretreatment device through the first water inlet, and the water sample to be detected is firstly subjected to filtering treatment through the filtering tank inside the pretreatment device so as to remove impurities such as suspended solid in the water sample to be detected, and the influence of the impurities in the water sample on the turbidity of the water sample is avoided, so that the accuracy of a subsequent detection result is influenced. The water sample after being filtered by the filter tank flows out of the filter holes in the bottom of the filter tank and enters the bottom of the pretreatment device, an instruction for starting the first stirring piece is input through the control panel, the instruction is transmitted to the first stirring piece by the controller, and then the water sample at the bottom of the pretreatment device is stirred by the first stirring piece, a certain amount of water sample with uniform stirring is conveyed into the pretreatment device through the first water outlet in the bottom of the pretreatment device and the first pipeline, and then the water sample is guided into the pretreatment device, so that the water sample entering the pretreatment device keeps a uniform water state, and the detection accuracy is improved.
Carrying out first turbidity detection on a water sample entering the pre-detection device through a turbidity sensor, then adding a certain amount of heavy metal chelating agent through a first feed inlet, starting a second stirring piece, chelating the heavy metal chelating agent with heavy metal ions in the water sample under the stirring action of the second stirring piece to form floccule precipitate, so that the turbidity in the water sample is increased, then carrying out second turbidity detection on the water sample chelated in the pre-detection device through the turbidity sensor to obtain turbidity difference values at two sides, comparing the turbidity difference values before and after the water sample is chelated with a threshold value stored in a data storage module by a controller, and if the turbidity difference values are smaller than the threshold value, indicating that the heavy metal content in the water body reaches the standard, directly discharging the water sample without carrying out subsequent quantitative detection; if the water content is larger than or equal to the threshold value, the heavy metal content in the water body does not reach the standard, the water needs to be discharged after being treated, in order to guide efficient treatment on heavy metal ions, a water sample uniformly stirred at the bottom of the pretreatment device 1 with a certain volume is conveyed to the third water inlet through the second pipeline from the first water outlet and then is guided into the quantitative detection device, quantitative detection on the content of the heavy metal ions in the water sample is realized through the quantitative detection device, and the detection result is displayed through the display screen.
The detection device provided by the invention can be used for pre-detecting the water bodies with different heavy metal contents through the pre-detection device and judging whether specific quantitative detection is required, so that the detection and analysis of the water quality can be realized in a targeted and efficient manner according to the content of heavy metal ions, the detection efficiency of the water bodies is improved, and the resource waste caused by the detection of the water bodies which reach the standard can be avoided. The quantitative analysis of the heavy metal content is realized through the quantitative detection device aiming at the water sample which does not reach the standard, the remover of each heavy metal ion with different dosage is added according to the content of different heavy metal ions, so that the heavy metal ions are removed, and the damage of the heavy metal ions to the ecological environment is avoided.
Drawings
FIG. 1 is a schematic overall structure of a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a quantitative determination device in a preferred embodiment of the present invention;
fig. 3 is a schematic diagram of the connection relationship of the controller according to the preferred embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-3, the present embodiment provides a heavy metal water quality detection apparatus, which includes a pretreatment apparatus 1, a pre-detection apparatus 2, a quantitative detection apparatus 3, and a control apparatus 4; the water sample that awaits measuring is by first water inlet 11 entering preprocessing device 1 in, and the water sample that awaits measuring at first carries out filtration treatment through the inside filtering ponds 12 of preprocessing device 1 to impurity such as solid suspended solid in the detached water sample that awaits measuring avoids the impurity in the water sample to cause the influence to the turbidity of water sample, thereby influences follow-up testing result's accuracy. The water sample filtered by the filter tank 12 flows out of the filtering holes in the bottom of the filter tank 12 and enters the bottom of the pretreatment device 1, an instruction for starting the first stirring part 13 is input through the control panel 42, the instruction is transmitted to the first stirring part 13 by the controller 41, and then the water sample at the bottom of the pretreatment device 1 is stirred by the first stirring part 13, a certain amount of water sample uniformly stirred is conveyed to the second water inlet 21 from the first water outlet 14 in the bottom of the pretreatment device 1 through the first pipeline 15 and then is guided into the pretreatment device 2, so that the water sample entering the pretreatment device 2 is kept in a uniform water state, and the detection accuracy is improved.
The method comprises the steps that a water sample entering the pre-detection device 2 is subjected to first turbidity detection through a turbidity sensor 24, then a certain amount of heavy metal chelating agent is added from a first feeding hole 22, a second stirring piece 23 is started, the heavy metal chelating agent and heavy metal ions in the water sample are chelated under the stirring action of the second stirring piece 23 to form floccule precipitates, so that the turbidity in the water sample is increased, then the chelated water sample in the pre-detection device 1 is subjected to second turbidity detection through the turbidity sensor 24 to obtain turbidity difference values on two sides, a controller 41 compares the turbidity difference values before and after the water sample is chelated with a threshold value stored in a data storage module 44, if the turbidity difference value is smaller than the threshold value, the heavy metal content in the water body reaches the standard, the water sample can be directly discharged, and subsequent quantitative detection is not needed; if the content of the heavy metal ions in the water sample is larger than or equal to the threshold value, the heavy metal ions in the water sample do not reach the standard, the heavy metal ions need to be discharged after being treated, in order to guide efficient treatment of the heavy metal ions, the water sample uniformly stirred at the bottom of the pretreatment device 1 with a certain volume is conveyed to the third water inlet 31 from the first water outlet 14 through the second pipeline 25 and then is guided into the quantitative detection device 3, quantitative detection of the content of the heavy metal ions in the water sample is realized through the quantitative detection device 3, and the detection result is displayed through the display screen body 43.
The detection device provided by the invention can be used for pre-detecting the water bodies with different heavy metal contents through the pre-detection device 2 and judging whether specific quantitative detection is required or not, so that the detection and analysis of the water quality can be realized in a targeted and efficient manner according to the content of heavy metal ions, the detection efficiency of the water body is improved, and the resource waste caused by the detection of the water body which reaches the standard can be avoided. The quantitative analysis of the heavy metal content is realized through the quantitative detection device 3 aiming at the water sample which does not reach the standard, so that the remover of each heavy metal ion with different dosage is added according to the content of different heavy metal ions, the removal of the heavy metal ions is realized, and the damage of the heavy metal ions to the ecological environment is avoided.
In order to accelerate the chelating action between the heavy metal chelating agent in the pre-detection device 2 and the heavy metal in the water sample, so as to enable the heavy metal chelating agent and the heavy metal in the water sample to rapidly form flocculent precipitate, in another preferred embodiment of the invention, a pH detector 7 is further disposed on the inner wall of the pre-detection device 2, and the pH detector 7 is electrically connected to the controller 41.
In order to rapidly realize the quantitative detection of the heavy metals in the water sample, in another preferred embodiment of the present invention, the quantitative detection device 3 includes a detection cell 32, a chemical storage cell 33, a condenser lens 34, a laser generator 35 and a photoelectric sensor 36; a certain amount of water sample to be quantitatively detected enters the detection pool 32 from the third water inlet 31 on the detection pool 32, then, a certain amount of the acoustic signal enhancer placed in the drug storage pool 33 is conveyed from the drug outlet 331 to the second feed port 321 through the third pipeline 37 and then is guided into the detection pool 32, the third stirring piece 38 is started to uniformly mix the acoustic signal enhancer with the water sample to obtain the liquid to be detected, then, the laser generator 35 is turned on to emit a laser beam toward the detection cell 32, the generated laser beam obtains a horizontal beam by the condenser lens 34, and the light beam passes through the liquid to be detected in the detection cell 32 from the transparent window 322 on one side of the detection cell 32 and then passes through the transparent window 322 on the other side of the detection cell 32, the intensity of the light beam passing through the cell 32 is detected by the photoelectric sensor 36 on the other side of the cell and transmitted to the controller 41; when the light beam passes through the liquid to be detected in the detection tank 32, the acoustic sensor 323 in the detection tank 32 detects and obtains an acoustic signal generated by laser excitation in the liquid to be detected, converts the acoustic signal into an electric signal and transmits the electric signal to the controller 41, and the controller 41 processes the obtained acoustic signal and the light intensity detected by the photoelectric sensor 36 to obtain an intensity value of the acoustic signal in the detection tank 32, further obtain a heavy metal content value to be detected, and display the value through the display screen 43.
In this embodiment, the acoustic signal enhancing agent in the chemical storage pool 33 is a sol containing gold nanoparticles, and a layer of molecules capable of specifically binding to heavy metals in the liquid is modified on the surface of the gold nanoparticles, so that when heavy metals in a water sample are mixed with the acoustic signal enhancing agent, the surface modification layer of the acoustic signal enhancing agent can bind to heavy metals in the water sample to form clusters, so that the surface plasmon resonance absorption peak of the acoustic signal enhancing agent is weakened, and thus the absorption of the liquid to be detected in the detection pool 32 at the laser wavelength emitted by the laser generator 35 is weakened, the liquid to be detected in the detection pool 32 generates a photoacoustic effect after absorbing the energy of the laser beam directed to the detection pool 32, and part of the absorbed energy is converted into an acoustic signal, which is very rapid. When the content of the specific heavy metal substance in the liquid to be detected changes, the absorption ratio of the liquid to be detected to the laser in the detection pool 32 also changes, and the intensity of the acoustic signal is finally influenced, so that the quantitative detection device 3 of the embodiment can change according to the intensity of the acoustic signal of the water sample to be detected in the detection pool 32, and further realize the rapid measurement of the content of the heavy metal in the water sample.
In order to facilitate the adjustment of the spot size of the light beam processed by the condenser lens 34, in another preferred embodiment of the present invention, a mounting block 39 is disposed in the quantitative detection device 3, and a chute 391 is disposed on the mounting block 39; the condenser lens 34 is provided with a sliding block 341 matched with the sliding chute 391, and the condenser lens 34 is connected to the mounting block 39 in a sliding fit manner through the sliding block 341; and the condensing lens 34 is connected with a driving member 342 in a transmission manner, the driving member 342 is an electric telescopic rod and is electrically connected with the controller 41, so that the driving member 342 can be driven to drive the condensing lens 34 to slide left and right on the mounting block 39, the adjustment of the distance between the condensing lens 34 and the transparent window 322 is realized, and the adjustment of the size of the light spot of the light beam processed by the condensing lens 34 is realized.
In order to facilitate the control of the amount of the water sample or the chemical to be added to each component, in another preferred embodiment of the present invention, the first control valve 151 is disposed on the first pipe 15, and the first control valve 151 is electrically connected to the controller 41, so as to control the amount of the water sample to be detected introduced into the pre-detection device 2 by the pre-treatment device 1. The second pipeline 25 is provided with a second control valve 251, and the second control valve 251 is electrically connected with the controller 41, so that the usage amount of the water sample to be detected, which is introduced into the detection pool 32 by the pretreatment device 1, can be controlled. The third tube 37 is provided with a third control valve 371, and the third control valve 371 is electrically connected to the controller 41, so as to control the dosage of the acoustic signal intensifier introduced from the medicament reservoir 33 into the detection reservoir 32.
In order to facilitate the removal of the impurities filtered in the pretreatment device 1, in another preferred embodiment of the present invention, the upper end of the pretreatment device 1 has an opening, the filtration tank 12 is horizontally disposed in the pretreatment device 1, the upper end of the filtration tank 12 is connected to the top of the pretreatment device 1 through the electric telescopic rod 16, and the electric telescopic rod 16 is electrically connected to the controller 41; and the both sides wall of preprocessing device 1 is gone up to open relatively and is equipped with vertical guide way 17, the both ends structure and the guide way 17 phase-match of filtering ponds 12, and respectively sliding fit connect in with corresponding guide way 17 to can drive filtering ponds 12 through drive electric telescopic handle 16 and reciprocate in guide way 17, and then can remove filtering ponds 12 to the uncovered department of preprocessing device 1 upper end, thereby be convenient for get rid of the impurity in the filtering ponds 12.
In the embodiment, a plurality of filtering holes are formed in the bottom of the filtering tank 12, a liquid storage cavity for storing a filtered water sample to be detected is formed between the bottom of the filtering tank 12 and the bottom of the pretreatment device 1, and the first water outlet 14 is formed in the bottom of the liquid storage cavity; first stirring piece 13 sets up in the stock solution intracavity, stirs the processing to the water sample after the stock solution intracavity filtration processing, makes it remain the homogeneous water state throughout when detecting.
In order to recover the detected water sample and facilitate subsequent direct discharge or discharge after purification treatment, in another preferred embodiment of the invention, the heavy metal water quality detection device further comprises a wastewater storage tank 5, a fourth water inlet 51 is arranged at one side of the wastewater storage tank 5, and the fourth water inlet 51 is communicated with the first water outlet 14, the second water outlet 26 on the pre-detection device 2 and the third water outlet 323 on the detection tank 32 through a fourth pipeline 52; the fourth pipeline 52 is provided with a fourth control valve 521, a fifth control valve 522 and an eighth control valve 523, and the fourth control valve 521, the fifth control valve 522 and the eighth control valve 523 are all electrically connected with the controller 41; the fourth control valve 521 is located between the first water outlet 14 and the fourth water inlet 51; the fifth control valve 522 is located between the second water outlet 26 and the fourth water inlet 51, and the eighth control valve 523 is located between the third water outlet 323 and the fourth water inlet 51, so that wastewater in each component can be recovered by controlling the switch of each control valve, and the wastewater can be conveniently discharged directly or after purification treatment.
In order to facilitate cleaning of each detected component, or when the color of the water sample is too deep, which may affect the subsequent detection accuracy, in another preferred embodiment of the present invention, the heavy metal water quality detection apparatus further includes a water storage tank 6, distilled water is placed in the water storage tank 6, one end of the water storage tank 6 is provided with a fifth water outlet 61, and the fifth water outlet 61 is respectively communicated with the second water inlet 21 and the third water inlet 31 through a fifth pipeline 62; a sixth control valve 621 and a seventh control valve 622 are arranged on the fifth pipeline 62, and the sixth control valve 621 and the seventh control valve 622 are both electrically connected with the controller 41; the sixth control valve 621 is located between the second water inlet 21 and the fifth water outlet 61; the seventh control valve 622 is located between the third water inlet 31 and the fifth water outlet 61, so that distilled water placed in the water storage tank 6 can be quantitatively guided into each component by controlling the switch of each control valve, and the distilled water is cleaned or diluted to avoid the influence of water sample residue on the accuracy of subsequent detection results.
In order to facilitate reminding of the staff of the detection result of the pre-detection device 2, in another preferred embodiment of the present invention, the control device 4 further includes an indicator lamp 45 and a buzzer 46, both the indicator lamp 45 and the buzzer 46 are electrically connected to the controller 41, so that when the turbidity difference value obtained by the pre-detection device 2 is smaller than the threshold value, the controller 41 controls the indicator lamp 45 to turn green, which indicates that the water body reaches the standard, and no subsequent detection is required; when the turbidity difference obtained by the pre-detection device 2 is greater than or equal to the threshold value, the controller 41 controls the indicator lamp 45 to turn red, and simultaneously controls the buzzer 46 to make a sound to remind the worker to pay attention to the subsequent detection process, and the controller 41 controls the pre-treatment device 1 to guide out a certain volume of water to be detected to the quantitative detection device 3 again, so as to perform quantitative detection and analysis on the five heavy metal ions respectively.
It should be noted that, in the above embodiments of the present invention, the turbidity threshold stored in the data storage module 44 is the turbidity difference before and after the chelation of the heavy metal chelating agent in the water body with the highest allowable heavy metal content in the water quality meeting the standard, where the highest allowable heavy metal content in the water quality meeting the standard is set by the national standard, and a person skilled in the art should know that the highest allowable heavy metal content in the water quality meeting the standard is the turbidity difference before and after the chelation of the heavy metal chelating agent.
In the above embodiments of the present invention, the first stirring part 13 includes the first stirring rod 131, the first stirring paddle 132 and the first driving motor 133, the first stirring rod 131 is vertically disposed at the bottom of the liquid storage cavity, the first stirring paddle 132 is fixedly disposed on the first stirring rod 131, the first driving motor 133 is in transmission connection with the first stirring rod 131, and the first driving motor 133 is electrically connected with the controller 41.
In the above embodiments of the present invention, the second stirring member 23 includes a second stirring rod 231, a second stirring rod 232 and a second driving motor 233, the second stirring rod 231 is vertically disposed at the top of the inner side of the pre-detection device 2, the second stirring rod 232 is fixedly disposed on the second stirring rod 231, the second driving motor 233 is in transmission connection with the second stirring rod 231, and the second driving motor 233 is electrically connected with the controller 41; and the turbidity sensor 24 is provided at the bottom inside the pre-detection device 2.
In the above embodiments of the present invention, the third stirring element 38 includes a third stirring rod 381, a third stirring rod 382 and a third driving motor 383, the third stirring rod 381 is vertically disposed at the bottom of the inner side of the detection cell 32, the third stirring rod 382 is fixedly disposed on the third stirring rod 381, the third driving motor 383 is in transmission connection with the third stirring rod 381, and the third driving motor 383 is electrically connected with the controller 41.
In the above embodiment of the present invention, the acoustic sensor 323 is a resonant piezoelectric single crystal sensor, the acoustic sensor 323 is electrically connected to an amplifier, the amplifier is electrically connected to the controller 41, and the electrical signal of the acoustic sensor 323 is amplified by the amplifier and then is subjected to data processing by the controller 41.
And in the above embodiment, the photosensor 36 is a silicon photodiode.
And in the above embodiment, the light transmittance of the transparent window 322 is > 95%.
In the above embodiment, the bottom of the detection cell 32 is made of epoxy resin with acoustic impedance value not greater than 2 times of acoustic impedance value, and the thickness is 1/4 times of acoustic wavelength.
It is to be understood that the above-described embodiments are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Claims (10)
1. The heavy metal water quality detection device is characterized by comprising a pretreatment device (1), a pre-detection device (2), a quantitative detection device (3) and a control device (4);
a filtering tank (12) and a first stirring piece (13) are arranged in the pretreatment device (1);
the water inlet end of the pre-detection device (2) is communicated with the water outlet end of the pre-treatment device (1) through a pipeline, a first feed inlet (22) is formed in one end of the pre-detection device (2), and a second stirring piece (23) and a turbidity sensor (24) are arranged in the pre-detection device (2);
the water inlet end of the quantitative detection device (3) is communicated with the water outlet end of the pretreatment device (1) through a pipeline and is used for detecting the content of heavy metal ions in a water sample to be detected;
the control device (4) comprises a controller (41), and a control panel (42), a display screen body (43) and a data storage module (44) which are electrically connected with the controller (41); the controller (41) is electrically connected with the first stirring piece (13), the second stirring piece (23), the turbidity sensor (24) and the quantitative detection device (3) respectively.
2. The heavy metal water quality detection device according to claim 1, wherein the quantitative detection device (3) comprises a detection pool (32), a medicament storage pool (33), a condenser lens (34), a laser generator (35) and a photoelectric sensor (36);
the water inlet end of the detection pool (32) is communicated with the water outlet end of the pretreatment device (1) through a pipeline; transparent windows (322) are oppositely arranged on two side walls of the detection pool (32), and a third stirring piece (38) and a sound sensor (323) are arranged in the detection pool (32); a second feeding hole (321) is also formed in the detection pool (32);
an acoustic signal reinforcing agent is placed in the medicament storage pool (33), a medicament outlet (331) is formed in one side of the medicament storage pool (33), and the medicament outlet (331) is communicated with the second feed port (321) through a pipeline;
the condenser lens (34) and the photoelectric sensor (36) are both electrically connected with the controller (41), are respectively arranged on two sides of the detection cell (32), and are both positioned on the same horizontal position with the transparent window (322);
the laser generator (35) is electrically connected with the controller (41) and is arranged on one side, far away from the detection cell (32), of the condenser lens (34).
3. The heavy metal water quality detection device according to claim 2, wherein a mounting block (39) is arranged in the quantitative detection device (3), and the condensing lens (34) is connected to the mounting block (39) in a sliding fit manner;
the condensing lens (34) is in transmission connection with a driving piece (342), the driving piece (342) is electrically connected with the controller (41) and drives the distance between the condensing lens (34) and the transparent window (322).
4. The heavy metal water quality detection device according to claim 1 or 2, wherein each pipeline is provided with a corresponding control valve, and each control valve is electrically connected with the controller (41).
5. The heavy metal water quality detection device according to claim 1, wherein the filtering tank (12) is horizontally arranged in the pretreatment device (1), and a plurality of filtering holes are arranged at the bottom of the filtering tank (12);
a liquid storage cavity for storing the filtered water sample to be detected is formed between the bottom of the filter tank (12) and the bottom of the pretreatment device (1), and a water outlet end at the bottom of the liquid storage cavity is communicated with a water inlet end of the pre-detection device (2) and a water inlet end of the quantitative detection device (3);
the stirring piece set up in the stock solution intracavity, it is right the water sample after stock solution intracavity filtration handles stirs, makes it remain homogeneous water state throughout when detecting.
6. The heavy metal water quality detection device according to claim 1, further comprising a wastewater storage tank (5), wherein a water inlet end of the wastewater storage tank (5) is respectively communicated with a water outlet end of the pretreatment device (1), a water outlet end of the pretreatment device (2) and a water outlet end of the quantitative detection device (3) through pipelines;
and corresponding control valves are respectively arranged between the water inlet end of the wastewater storage tank (5) and the water outlet end of the pretreatment device (1), the water outlet end of the pretreatment device (2) and the water outlet end of the quantitative detection device (3), and each control valve is electrically connected with the controller (41).
7. The heavy metal water quality detection device according to claim 1, further comprising a water storage tank (6), wherein a water outlet end of the water storage tank (6) is respectively communicated with a water inlet end of the pre-detection device (2) and a water inlet end of the quantitative detection device (3) through pipelines;
and corresponding control valves are respectively arranged between the water outlet end of the water storage tank (6) and the water inlet end of the pre-detection device (2) and the water inlet end of the quantitative detection device (3), and each control valve is electrically connected with the controller (41).
8. The heavy metal water quality detection device according to claim 1, wherein a pH detector (7) is further arranged in the pre-detection device (2), and the pH detector (7) is electrically connected with the controller (41).
9. The heavy metal water quality detection device according to claim 1, wherein the control device (4) further comprises an indicator lamp (45), and the indicator lamp (45) is electrically connected with the controller (41).
10. The heavy metal water quality detection device according to claim 1, wherein the control device (4) further comprises a buzzer (46), and the buzzer (46) is electrically connected with the controller (41).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210373809.3A CN114778491A (en) | 2022-04-11 | 2022-04-11 | Heavy metal water quality testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210373809.3A CN114778491A (en) | 2022-04-11 | 2022-04-11 | Heavy metal water quality testing device |
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| CN114778491A true CN114778491A (en) | 2022-07-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389731A (en) * | 2022-10-26 | 2022-11-25 | 深圳众意远诚环保科技有限公司 | Device for detecting tin content in tin-stripping wastewater |
| CN116559122A (en) * | 2023-06-01 | 2023-08-08 | 上海勘测设计研究院有限公司 | Test device and method for rapidly judging water transparency influence factors |
-
2022
- 2022-04-11 CN CN202210373809.3A patent/CN114778491A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389731A (en) * | 2022-10-26 | 2022-11-25 | 深圳众意远诚环保科技有限公司 | Device for detecting tin content in tin-stripping wastewater |
| CN116559122A (en) * | 2023-06-01 | 2023-08-08 | 上海勘测设计研究院有限公司 | Test device and method for rapidly judging water transparency influence factors |
| CN116559122B (en) * | 2023-06-01 | 2024-03-29 | 上海勘测设计研究院有限公司 | Test device and method for rapidly judging water transparency influence factors |
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