CN109374352B - Detection equipment and detection method for heavy metals in wastewater - Google Patents
Detection equipment and detection method for heavy metals in wastewater Download PDFInfo
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- CN109374352B CN109374352B CN201811557653.4A CN201811557653A CN109374352B CN 109374352 B CN109374352 B CN 109374352B CN 201811557653 A CN201811557653 A CN 201811557653A CN 109374352 B CN109374352 B CN 109374352B
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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
- G01N21/17—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
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
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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
- G01N2001/1418—Depression, aspiration
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Abstract
The invention relates to a device for detecting heavy metals in wastewater, which comprises a sampling device, wherein the sampling device comprises a sampling box, a plurality of water tanks are arranged in the sampling box, one end of each water tank is connected with a water pump and a sampling pipe extending out of the sampling box, one side of each water tank, which is far away from the sampling pipe, is connected with a water supply pipe, one side of the sampling box, which is far away from the water tank, is fixedly connected with a water delivery pipe capable of extending out of the sampling box, a rotating disc is arranged between the water supply pipe and the water delivery pipe, one side of the surface of the rotating disc is provided with a water channel capable of being communicated with the water supply pipes and the water delivery pipe along with rotation along the axis direction of the rotating disc, the other side of the rotating disc is provided with a plurality of water inlet holes, one side of the rotating disc, which is far away from the water inlet holes. The invention has the effects of simple wastewater sampling, high fidelity and convenient sample carrying.
Description
Technical Field
The invention relates to the technical field of water quality monitoring, in particular to a device and a method for detecting heavy metals in wastewater.
Background
The heavy metal is metal with specific gravity of more than 5 (generally, metal with density of more than 4.5 g per cubic centimeter), including gold, silver, copper, iron, lead and the like, and the heavy metal is accumulated in a human body to a certain degree to cause chronic poisoning. What is a heavy metal is not strictly defined uniformly at present, and the heavy metal in terms of environmental pollution mainly refers to heavy elements with significant biological toxicity, such as mercury (mercury), cadmium, lead, chromium, metalloid arsenic and the like. Heavy metals are very difficult to biodegrade, but instead can be concentrated hundreds of times under the action of biological amplification of the food chain and finally enter the human body. Heavy metals can interact strongly with proteins and enzymes in the human body, so that the heavy metals lose activity and can also accumulate in certain organs of the human body to cause chronic poisoning.
Once entering the water body, the heavy metal is easy to enter the human body through the biological enrichment and accumulation effects to cause tissue and organ damage. At present, instruments such as atomic fluorescence, atomic absorption spectroscopy, inductively coupled plasma-mass spectrometry and the like are not suitable for rapid online monitoring of heavy metals in water quality due to high price and inconvenient operation. Based on the anodic stripping voltammetry on-line monitor, the on-line monitor is one of important means for rapidly monitoring heavy metals in water in the future due to the characteristics of low cost, high sensitivity, strong anti-interference capability, rapidness, convenience and the like
When detecting heavy metal in the waste water, all need to sample waste water, traditional sampling method all adopts a plurality of sampling devices to carry out and detects respectively after the single-point sampling, examines the result through computer analysis at last and reachs final test result, nevertheless when actually sampling, and the operation is comparatively troublesome, and it is inconvenient to use, and the sample carries inconveniently.
Disclosure of Invention
The invention aims to provide detection equipment for heavy metals in wastewater, which has the advantages of simple wastewater sampling and convenient sample carrying; the invention also aims to provide a detection method for detecting heavy metals in wastewater, which has the advantages of being convenient for sample fidelity and improving detection precision.
The above object of the present invention is achieved by the following technical solutions:
a detection device for heavy metals in wastewater comprises a sampling device and a detection device, wherein the sampling device comprises a sampling box, a plurality of water tanks are arranged in the sampling box, one end of each water tank is connected with a water pump and a sampling pipe extending out of the sampling box, one side of each sampling pipe is fixedly connected with a first control valve, one side of each water tank far away from the sampling pipe is connected with a water supply pipe, the middle part of each water supply pipe is fixedly connected with a second control valve, one side of the sampling box far away from the water tank is fixedly connected with a water delivery pipe capable of extending out of the sampling box, a rotating disc which is rotatably connected with the sampling box is arranged between the water supply pipe and the water delivery pipe, one side of the surface of the rotating disc is provided with a water channel which can be communicated with each water supply pipe and the water delivery pipe along with rotation along the axial direction of the rotating disc, the other side of the rotating disc is provided with a plurality of water inlet holes, along with the rotation of the rotating disc, a plurality of water supply pipes can be communicated with a water supply pipe through the water inlet holes and the water outlet holes.
By adopting the technical scheme, during work, each sampling point inserted in the waste water can be inserted through each sampling pipe, then the water is pumped into each water tank through a water pump, then the first control valve is closed and carried into a laboratory, when the water in the three water tanks needs to be detected respectively, the rotating disc can be rotated, the two ends of each water channel are respectively communicated with the corresponding water feeding pipe and the corresponding water conveying pipe, then the second control valve is opened respectively, the water in the three water tanks is respectively conveyed out, then the water in the three water tanks is respectively placed in the detection equipment for detection, when the heavy metal in the waste water needs to be further detected, the first control valve can be closed, then the rotating disc is rotated, the communication between the water feeding pipes and the water conveying pipe is completed through each water inlet hole and the water outlet hole, so that the water in the water tanks respectively enters the water inlet holes to be mixed and then is output from the water outlet hole and is output from the water conveying pipe, then place and detect in the check out test set, on the one hand, sample convenient to carry, the precision of the detection of improvement waste water that also can be further in addition.
The invention is further configured to: the sampling box has been seted up the heat preservation chamber corresponding the position in each water tank outside, and the sampling box corresponds the position rigid coupling of heat preservation chamber one side and has steam conveyor, and the sampling box corresponds the position rigid coupling of heat preservation chamber opposite side and has air conditioning conveyor.
Through adopting above-mentioned technical scheme, the during operation can carry out temperature regulation to the heat preservation intracavity through adjusting steam conveyor and air conditioning conveyor to the temperature that makes each water tank keeps unanimous with ambient temperature, and the fidelity of further improvement sample, and then improve and detect the precision.
The invention is further provided with: the outside of sampling case is provided with the temperature-detecting device that can detect the inside temperature of heat preservation chamber.
Through adopting above-mentioned technical scheme, can be convenient for detect the temperature in the heat preservation intracavity through the temperature-detecting device who adopts, convenient to use.
The invention is further provided with: and the outer side of the heat preservation cavity is fixedly connected with a heat preservation layer.
Through adopting above-mentioned technical scheme, the during operation, the heat preservation can be further isolated external with the temperature in the heat preservation intracavity to improve the fidelity of sample.
The invention is further provided with: one side of the sampling box is provided with an access hole corresponding to the position of the heat preservation cavity, and the outer side of the access hole is hermetically and detachably connected with a cover plate.
Through adopting above-mentioned technical scheme, the during operation is opened the apron and can is opened the access hole, accomplishes the maintenance of water tank, convenient to use, easy operation.
The invention is further provided with: the water tank is detachably connected to the water supply pipe and the water delivery pipe.
Through adopting above-mentioned technical scheme, after finishing work, can follow the water pipe and dismantle the water pipe between the raceway with the water tank to be convenient for clean and overhaul the change to the water tank.
The invention is further configured to: the outside rigid coupling of rolling disc has external gear ring, still be provided with a servo motor in the sampling box, servo motor's output shaft rigid coupling has one can mesh in the drive gear of external gear ring.
Through adopting above-mentioned technical scheme, during operation, the rotation of servo motor output shaft can drive gear and rotate to drive the rotation of outer gear ring, and then drive the rolling disc and rotate, be suitable for different operating modes.
The invention is further configured to: and sealing gaskets are fixedly connected to the two surfaces of the rotating disc.
Through adopting above-mentioned technical scheme, can accomplish the leakproofness of being connected between rolling disc and flow pipe and the raceway through the sealed pad that adopts, prevent to reveal.
The second aim of the invention is realized by the following technical scheme:
a method for detecting heavy metals in wastewater comprises the following steps:
step S1, adopting a sampling device, inserting each sampling pipe into each sampling point in the waste water, pumping water into each water tank through a water pump, then closing a first control valve, adjusting the temperature in the heat preservation cavity through adjusting a hot gas conveying device and a cold gas conveying device so as to keep the temperature of each water tank consistent with the outside temperature, then carrying the water tanks into a laboratory, rotating a rotating disc to enable two ends of each water channel to be respectively communicated with a corresponding water delivery pipe and a corresponding water delivery pipe, then respectively opening a second control valve to enable the water in the three water tanks to be respectively delivered to three test tubes, then closing the first control valve, rotating the rotating disc to enable a plurality of water delivery pipes to be communicated with one water delivery pipe through each water inlet hole and each water outlet hole, enabling the water in the plurality of water tanks to respectively enter the water inlet holes to be mixed and then be output from one water outlet hole and output from one water delivery pipe to one test tube, respectively filtering the detection liquid in the four test tubes, and reserving 24-50ml of liquid to be detected in each test tube;
step S2, respectively putting each solution to be detected into a polytetrafluoroethylene tube, pouring flushing liquid into the polytetrafluoroethylene tube after flushing the solution with 50ml of deionized water, simultaneously adding 1-2ml of digestion solution for high-temperature dissolution for 1-3h, and cooling to obtain a dissolved solution;
step S3, filtering, washing and fixing the volume of each solution to obtain a sample;
step S4, carrying out qualitative and quantitative analysis on the heavy metals in each sample by adopting a flame atomic absorption spectrometer;
step S5, comprehensively compares the detection results of the four samples.
Through adopting above-mentioned technical scheme, have the fidelity that can improve the sample, and through the liquid that adopts three each sampling point detect respectively and detect after the liquid mixture of three sampling pad can, carry out the analysis can improve the advantage that detects the precision.
In conclusion, the beneficial technical effects of the invention are as follows:
1. when the device works, the sampling pipes can be inserted into sampling points in waste water, water is pumped into water tanks through a water pump, then a first control valve is closed and carried into a laboratory, when water in three water tanks needs to be detected respectively, a rotating disc can be rotated, two ends of each water channel are respectively communicated with corresponding water feeding pipes and water conveying pipes, then second control valves are respectively opened to enable water in the three water tanks to be respectively conveyed out, then detection equipment is respectively arranged for detection, when heavy metal in the waste water needs to be further detected, the first control valve can be closed, then the rotating disc is rotated, a plurality of water feeding pipes are communicated with one water conveying pipe through water inlet holes and water outlet holes, so that the water in the water tanks respectively enters the water inlet holes to be mixed and then is output from one water outlet hole and is output from one water conveying pipe, and then the water conveying pipes are arranged in the detection equipment for detection, on one hand, the sampling and carrying are convenient, and in addition, the detection accuracy of the wastewater can be further improved;
2. when the device works, the temperature in the heat preservation cavity can be adjusted by adjusting the hot air conveying device and the cold air conveying device, so that the temperature of each water tank is kept consistent with the outside temperature, the fidelity of a sample is further improved, and the detection precision is further improved;
3. by adopting the detection method, the fidelity of the sample can be improved, and the detection precision can be improved by respectively detecting the liquid at the three sampling points and mixing the liquid with the three sampling pads, and analyzing the liquid.
Drawings
FIG. 1 is a schematic diagram of a sampling box according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a cold air transportation device according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a water supply pipe according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a rotary disk according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of a waterway structure according to a first embodiment of the present invention;
fig. 6 is a schematic diagram of a hybrid tunnel structure according to a first embodiment of the present invention.
In the figure, 1, a sampling box; 11. a handle; 12. an access hole; 121. a cover plate; 13. an accommodating cavity; 14. a bearing plate; 15. a servo motor; 151. a drive gear; 2. a heat preservation cavity; 21. a hot gas delivery device; 22. a cold air delivery device; 23. a temperature detection device; 24. a water tank; 3. a sampling tube; 31. a water pump; 32. a first control valve; 4. a water supply pipe; 41. a second control valve; 5. rotating the disc; 51. a water channel; 52. a mixing channel; 521. a water inlet hole; 522. a water outlet hole; 53. an outer gear ring; 6. a water delivery pipe; 61. and a third control valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows: referring to fig. 1, a device for detecting heavy metals in wastewater includes a sampling device and a detection device, where the detection device is a flame atomic absorption spectrometer (which is a prior art and is not described herein again).
Referring to fig. 1 and 2, sampling equipment includes sampling box 1, two handles 11 of upside fixedly connected with of sampling box 1, heat preservation chamber 2 has been seted up to one side of sampling box 1, access hole 12 has been seted up to the position of one side that sampling box 1 corresponds heat preservation chamber 2, access hole 12 position still is provided with one side and articulates in the apron 121 of sampling box 1 and opposite side hasp connection in sampling box 1, apron 121 closes access hole 12 and can realize heat preservation chamber 2 sealed, one side fixedly connected with that sampling box 1 corresponds heat preservation chamber 2 can be to the heat transport device 21 of carrying steam in heat preservation chamber 2, and sampling box 1 corresponds the air conditioning conveyor 22 that the position fixedly connected with of heat preservation chamber 2 opposite side can carry air conditioning to heat preservation chamber 2, the sampling box 1 outside is still fixedly connected with can detect the temperature-detecting device 23 of temperature in heat preservation chamber 2. During operation, can be according to temperature-detecting device 23, make the temperature in heat preservation chamber 2 reach unanimity with external temperature through adjusting air conditioning conveyor 22 or hot gas conveyor 21, for further heat preservation effect of strengthening heat preservation chamber 2, the inboard fixedly connected with heat preservation in heat preservation chamber 2.
Referring to fig. 2 and 3, be provided with a plurality of water tanks 24 in the heat preservation chamber 2, the equal fixedly connected with one end in position that sampling box 1 corresponds each water tank 24 one side can extend to sampling pipe 3 in the heat preservation chamber 2, and each equal bolted connection of sampling pipe 3 is in the water tank 24 that corresponds and communicate with the water tank 24 that corresponds, and the other end of each sampling pipe 3 still extends one side of sampling box 1 respectively. Sampling case 1 corresponds the position that sampling pipe 3 is located between sampling case 1 and heat preservation chamber 2 and is provided with holding chamber 13, and the equal rigid coupling in position that each sampling pipe 3 is located holding chamber 13 has the water pump 31 that can take out external waste water to in the water tank 24 and can control the first control valve 32 that each sampling pipe 3 shut off. During operation, can insert respectively each external water pipe of sampling pipe 3 and locate each sampling point position in the waste water, open first control valve 32 and water pump 31 simultaneously, can take out the waste water of sampling point position to water tank 24 in, after the extraction, close each water pump 31 and each first control valve 32 respectively, can accomplish the collection of water sample.
Referring to fig. 3 and 4, the sampling box 1 is fixedly connected with the water supply pipe 4 with one end capable of extending into the heat preservation cavity 2 corresponding to the other side of the heat preservation cavity 2, and each water supply pipe 4 is bolted to one side of the water tank 24 far away from the sampling pipe 3 and communicated with the water tank 24. The middle part of each water supply pipe 4 is fixedly connected with a second control valve 41 which can close the corresponding water supply pipe 4. The vertical rigid coupling of the one end that heat preservation chamber 2 was kept away from to each flow pipe 4 of water tank 24 has accept board 14, it has axis level setting rolling disc 5 to accept to rotate on the board 14 to be connected with, the same water course 51 (refer to 5) of 4 quantity of flow pipes is seted up to the axis direction of rolling disc 5 on one side of the surface of rolling disc 5, sampling case 1 corresponds that one side that flow pipe 4 was kept away from to rolling disc 5 still the rigid coupling have with the same raceway 6 of 4 quantity of flow pipes, it can make each water course 51 and each flow pipe 4 and raceway 6 intercommunication to rotate rolling disc 5, thereby make the water in each water tank 24 pass through flow pipe 4 in proper order, water course 51 and raceway 6 carry out respectively.
The other side of the rotating disc 5, which is close to the surface of the water supply pipe 4, is provided with water inlet holes 521 (refer to fig. 6) with the same number as the water supply pipes 4, one side of the rotating disc 5, which is close to the surface of the water supply pipe 6 and is far away from each air passage, is provided with a water outlet 522, one water outlet 522 can be communicated with each water inlet hole 521 together and forms a mixing channel 52 inside the rotating disc 5, and the rotating disc 5 can be rotated to enable one end of the mixing channel 52 to be communicated with each water supply pipe 4 and enable one end of the mixing channel 52 to be communicated with one water supply pipe 6, so that water in each water tank 24 enters the mixing channel 52 through the water supply pipes 4 to be.
In order to further enhance the sealing performance between the rotating disc 5 and the water supply pipe 4 and the water supply pipe 6 and prevent water leakage, sealing gaskets are fixedly connected to the two surfaces of the rotating disc 5. An external gear ring 53 coaxial with the rotating disc 5 is fixedly connected to the peripheral surface of the outer side of the rotating disc 5, a servo motor 15 is fixedly connected to the interior of the sampling box 1, a driving gear 151 is fixedly connected to an output shaft of the servo motor 15, and the driving gear 151 is meshed with the external gear ring 53. During operation, servo motor 15 drives drive gear 151 to rotate and can drive rolling disc 5 to rotate accurately, realizes mixing the transposition of way 52 and water course 51.
The middle part of raceway 6 is rigid coupling has third control valve 61, and the one end of raceway 6 all can extend the sampling system sample to keeping away from one side of sampling pipe 3. When a sample is taken in the laboratory, the third control valve 61 can be opened, so that the sample can flow out of the water pipe 6.
The implementation principle of the embodiment is as follows: when the device works, firstly, according to the temperature detection device 23, the temperature in the heat preservation cavity 2 is consistent with the outside temperature by adjusting the cold air conveying device 22 or the hot air conveying device 21, then, the external water pipes of the sampling pipes 3 are respectively inserted into the wastewater at the sampling points, the first control valve 32 and the water pump 31 are simultaneously opened, the wastewater at the sampling points can be pumped into the water tank 24, after the pumping is finished, the water pumps 31 and the first control valves 32 are respectively closed, the collection of water samples can be finished, then the water samples are carried to a laboratory, when the water in the three water tanks 24 needs to be respectively detected, the rotating disc 5 is driven to rotate by the servo motor 15, so that the water channels 51 are communicated with the water conveying pipes 4 and the water conveying pipes 6, and then the second control valve 41 and the third control valve 61 are respectively opened, and the water in the water tanks 24 sequentially passes through the water conveying pipes 4, The water channel 51 and the water pipe 6 are respectively conveyed out, then the water samples are respectively detected through the detection equipment, when heavy metals in the wastewater need to be further detected, the first control valve 32 is closed, then the rotating disc 5 is rotated, one end of the mixing channel 52 is communicated with each water conveying pipe 4, one end of the mixing channel 52 is communicated with one water pipe 6, therefore, water in each water tank 24 enters the mixing channel 52 through the water conveying pipes 4 to be mixed and output from one water pipe 6, then the output water samples are detected through the detection equipment, and finally, the multiple water samples are subjected to contrastive analysis.
Example two: a method for detecting heavy metals in wastewater comprises the following steps:
step S1, adopting a sampling device, inserting each sampling pipe 3 into each sampling point in the waste water, pumping water into each water tank 24 through a water pump 31, then closing a first control valve 32, adjusting the temperature in the heat preservation cavity 2 through adjusting a hot gas conveying device 21 and a cold gas conveying device 22 so as to keep the temperature of each water tank 24 consistent with the outside temperature, then carrying the water into a laboratory, rotating a rotating disc 5 to ensure that two ends of each water channel 51 are respectively communicated with a corresponding water conveying pipe 4 and a corresponding water conveying pipe 6, then respectively opening a second control valve 41 to ensure that the water in the three water tanks 24 is respectively conveyed out to three test tubes, then closing the first control valve 32, rotating the rotating disc 5, completing the communication between a plurality of water conveying pipes 4 and a water conveying pipe 6 through each water inlet 521 and water outlet 522, respectively enabling the water in the plurality of water tanks 24 to enter a water inlet 521 to be mixed and then be output from a water outlet 522, outputting the liquid to a test tube from a water pipe 6, filtering the detection liquid in the four test tubes respectively, and reserving 24-50ml of liquid to be detected in each test tube;
step S2, respectively putting each solution to be detected into a polytetrafluoroethylene tube, pouring flushing liquid into the polytetrafluoroethylene tube after flushing the solution with 50ml of deionized water, simultaneously adding 1-2ml of digestion solution for high-temperature dissolution for 1-3h, and cooling to obtain a dissolved solution;
step S3, filtering, washing and fixing the volume of each solution to obtain a sample;
step S4, carrying out qualitative and quantitative analysis on the heavy metals in each sample by adopting a flame atomic absorption spectrometer;
step S5, comprehensively compares the detection results of the four samples.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides a check out test set of heavy metal in waste water, includes sampling equipment and check out test set, its characterized in that: the sampling device comprises a sampling box (1), a plurality of water tanks (24) are arranged in the sampling box (1), one end of each water tank (24) is connected with a water pump (31) and a sampling pipe (3) extending out of the sampling box (1), one side of each sampling pipe (3) is fixedly connected with a first control valve (32), one side of each water tank (24) far away from the sampling pipe (3) is connected with a water supply pipe (4), the middle part of each water supply pipe (4) is fixedly connected with a second control valve (41), one side of the sampling box (1) far away from the water tank (24) is fixedly connected with a water conveying pipe (6) capable of extending out of the sampling box (1), a rotating disc (5) rotationally connected to the sampling box (1) is arranged between the water supply pipe (4) and the water conveying pipe (6), one side of the surface of the rotating disc (5) is provided with a water channel (51) capable of being communicated with each water supply pipe (4) and the water conveying pipe (6) along with the rotation along, the sampling box (1) is fixedly connected with water conveying pipes (6) with the same number as the water conveying pipes (4) corresponding to one side of the rotating disc (5) far away from the water conveying pipes (4), each water channel (51) can be communicated with each water conveying pipe (4) and the water conveying pipe (6) by rotating the rotating disc (5), so that water in each water tank (24) is conveyed out through the water conveying pipes (4), the water channels (51) and the water conveying pipes (6) in sequence, a plurality of water inlet holes (521) are formed in the other side of the rotating disc (5), one side of the rotating disc (5) close to the surface of the water conveying pipes (6) and far away from each air channel is provided with a water outlet hole (522), one water outlet hole (522) can be communicated with each water inlet hole (521) together to form a mixing pipeline (52) in the rotating disc (5), one end of the mixing pipeline (52) can be communicated with each water conveying pipe (4) by rotating the rotating disc (5), and one end of the mixing pipeline (52) is communicated with, therefore, water in each water tank (24) enters the mixing channel (52) through the water supply pipe (4) to be mixed and is output from one water pipe (6), one surface of the rotating disc (5) far away from each water inlet hole (521) is provided with a water outlet pipe communicated with each water inlet hole (521), and the water supply pipes (4) can be communicated with one water pipe (6) through each water inlet hole (521) and the water outlet hole (522) along with the rotation of the rotating disc (5);
the sampling box (1) is provided with heat preservation chamber (2) corresponding to the position in each water tank (24) outside, and the position rigid coupling that sampling box (1) corresponds heat preservation chamber (2) one side has steam conveyor (21), and sampling box (1) corresponds the position rigid coupling of heat preservation chamber (2) opposite side has air conditioning conveyor (22).
2. The apparatus for detecting heavy metal in wastewater according to claim 1, wherein: the outside of sampling case (1) is provided with temperature-detecting device (23) that can detect the inside temperature of heat preservation chamber (2).
3. The apparatus for detecting heavy metal in wastewater according to claim 1, wherein: and a heat preservation layer is fixedly connected to the outer side of the heat preservation cavity (2).
4. The apparatus for detecting heavy metal in wastewater according to claim 1, wherein: one side of the sampling box (1) corresponds to the position of the heat preservation cavity (2) and is provided with an access hole (12), and the outer side of the access hole (12) is hermetically and detachably connected with a cover plate (121).
5. The apparatus for detecting heavy metal in wastewater according to claim 1, wherein: the water tank (24) is detachably connected to the water supply pipe (4) and the water delivery pipe (6).
6. The apparatus for detecting heavy metal in wastewater according to claim 1, wherein: the outside rigid coupling of rolling disc (5) has external gear ring (53), still be provided with a servo motor (15) in sampling box (1), the output shaft rigid coupling of servo motor (15) has one can mesh in drive gear (151) of external gear ring (53).
7. The apparatus for detecting heavy metal in wastewater according to claim 1, wherein: and sealing gaskets are fixedly connected to the two surfaces of the rotating disc (5).
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| CN111351897A (en) * | 2020-03-15 | 2020-06-30 | 江苏尚美环保科技有限公司 | Flue gas sulfide on-line monitoring device |
| CN111829951A (en) * | 2020-08-12 | 2020-10-27 | 安徽清大云博环保科技有限公司 | Trace silicate analyzer with alarm mechanism and working method thereof |
| CN116359465B (en) * | 2023-06-02 | 2023-09-08 | 天津水科机电有限公司 | Floating platform type water quality meteorological monitoring station |
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