CN110658023A - Drinking water source ground pollutant detection device based on gradient sampling - Google Patents

Drinking water source ground pollutant detection device based on gradient sampling Download PDF

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Publication number
CN110658023A
CN110658023A CN201910778803.2A CN201910778803A CN110658023A CN 110658023 A CN110658023 A CN 110658023A CN 201910778803 A CN201910778803 A CN 201910778803A CN 110658023 A CN110658023 A CN 110658023A
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China
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water
gradient
sampling
detection
extrusion
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CN201910778803.2A
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CN110658023B (en
Inventor
安坤
王龙乐
白洁琼
魏东洋
郭志鹏
蒋晓璐
黄春荣
贺涛
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South China Institute of Environmental Science of Ministry of Ecology and Environment
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South China Institute of Environmental Science of Ministry of Ecology and Environment
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34Purifying; Cleaning
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18Water
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D22/00Control of humidity
    • G05D22/02Control of humidity characterised by the use of electric means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices
    • G01N2001/1418Depression, aspiration

Abstract

The invention discloses a drinking water source pollutant detection device based on gradient sampling, and belongs to the technical field of water quality detection equipment. The device mainly comprises a detection main body, a gradient sampling element, a water sample containing element, a water sample detection element, a controller and a power supply, wherein the gradient sampling element comprises a mounting rack, a gradient sampling head and a sampling head extrusion sleeve; the micro driving motors II in different numbers on each gradient sampling head are controlled to work, so that the number of the micro driving motors II in the working state on each gradient sampling head is increased in a gradient manner, and the propeller generates driving force which is increased in a gradient manner on each gradient sampling head to finish sampling of water sources at different depths, so that the water source sampling is reliable and representative, and the accuracy of a detection result is improved; the invention has the advantages of reliable sampling, accurate detection and intelligent integration, and is suitable for mass popularization.

Description

Drinking water source ground pollutant detection device based on gradient sampling
Technical Field
The invention belongs to the technical field of water quality detection equipment, and particularly relates to a drinking water source pollutant detection device based on gradient sampling.
Background
Water is one of the most common substances on the earth, is an important resource for living of all lives including inorganic compounds and human beings, is also the most important component of organisms, plays an important role in life evolution, and is a non-renewable and broad-sense renewable resource in a narrow sense.
At present, the pollution form of surface water and underground water is still severe, except conventional pollutants, toxic and harmful novel pollutants represented by drug residues, personal care products, endocrine disruptors, disinfection byproducts and the like are continuously detected in a drinking water source water body, and serious threats are brought to drinking water safety. The drinking water safety is directly related to the vital interests of each resident, is the first major thing for ensuring the health of people, and is one of the biggest civil problems. To solve the problem of how to measure the safety level of water quality, researchers develop various instruments and equipment for detecting pollutants in water, an online monitoring and early warning system and the like. Some economically developed areas are successively provided with pollutant detection equipment in water source areas, and some drinking water plants with conditions are also provided with detection equipment additionally at raw water quality monitoring points for detecting pollutants in water.
The existing water source pollutant detection device has the following defects: 1) when the water body sampling is carried out, only the water body on the surface layer of the water source ground is sampled, and the water layer which cannot be deeply sampled and detected cannot be respectively sampled and detected, so that the measurement result has larger deviation and is inaccurate; 2) the synchronous operation of a plurality of groups of sampling and detection processes is not realized, so that the working efficiency is reduced; 3) after the detection work is finished, the device is not provided with a drying element, so that internal electrical elements are damped, the service life of the device is shortened, and the like.
Disclosure of Invention
Aiming at the existing problems, the invention provides the gradient sampling-based drinking water source pollutant detection device which is reliable in sampling, accurate in detection and intelligent in integration.
The invention provides a drinking water source pollutant detection device based on gradient sampling, which mainly comprises a detection main body, a gradient sampling element, a water sample holding element, a water sample detection element, a controller and a power supply, wherein the detection main body is provided with a water sample inlet and a water outlet; the left end and the right end of the inner wall of the detection main body are respectively symmetrically provided with a first sliding chute, one side of the bottom end of the detection main body is provided with a rectangular opening, and the bottom end in the detection main body is horizontally provided with a second sliding chute;
the gradient sampling element comprises a mounting frame, a gradient sampling head and a sampling head extrusion sleeve, wherein the mounting frame is arranged on the outer wall of the detection main body and is positioned at the same side of the rectangular opening, a plurality of branch frames are arranged at the bottom end of the mounting frame, each branch frame is provided with a winding disc, the central shaft of each winding disc is connected with a first micro-driving motor, a plurality of gradient sampling heads are arranged, the plurality of gradient sampling heads and the plurality of winding discs are in one-to-one correspondence, each gradient sampling head comprises an extrusion water outlet cover, a filter cover, a supporting transverse vertical rod, a water absorption sponge ball and a propeller, the extrusion water outlet cover and the filter cover are mutually buckled to form a cavity, the center of the upper bottom surface of the extrusion water cover is connected with the winding discs through a connecting wire, a spring rod is horizontally arranged at the upper end inside the extrusion water cover, a plurality of one-, the two ends of the water-absorbing sponge ball are respectively connected with the two ends of the cavity, a sliding ring is sleeved on the supporting vertical rod, the inner wall of the filter housing is connected with the sliding ring along the circumferential direction through a plurality of sliding supports, the water-absorbing sponge ball penetrates through the supporting vertical rod and is positioned at the upper end of the sliding ring, a plurality of propellers are arranged on the outer wall of the extruded water shield respectively, each propeller is driven by a micro driving motor II, the sampling head is extruded and sleeved at the right lower end of the mounting frame, a plurality of extrusion rings are extruded and sleeved on the sampling head, the extrusion rings correspond to the plurality of gradient sampling heads one by one, and the diameter of each extrusion ring is larger than the diameter of the upper bottom surface of the extruded water shield and;
the water sample containing element comprises a sliding mounting plate, a containing box and a micro driving motor III, a sliding block at the bottom end of the sliding mounting plate slides in the sliding chute II under the driving of the micro motor III, the containing box is arranged on the sliding mounting plate, a plurality of containing vessels are arranged in the containing box, and the containing box can move to the outside of the detection main body through a rectangular opening;
the water sample detection element comprises a lifting fixing frame, a plurality of water quality detectors and a lifting motor, the sliding blocks at the left end and the right end of the lifting fixing frame can slide in the corresponding sliding grooves under the driving of the lifting motor, the lower ends of the lifting fixing frame are horizontally and uniformly arranged on the plurality of water quality detectors, and the plurality of water quality detectors correspond to the plurality of holding dishes one by one;
the controller is connected with the first micro driving motor, the second micro driving motor, the third micro driving motor, the water quality detector and the lifting motor; the power supply provides power for the first micro driving motor, the second micro driving motor, the third micro driving motor, the water quality detector and the lifting motor.
Further, the rectangle opening has two, be located the detection main part lower extreme left and right sides respectively, gradient sampling element has two sets ofly, and two mounting brackets that correspond establish respectively in the outer wall left and right sides of detecting the main part, the water sample connects the component greatly and has two sets ofly, and the slider of two sliding mounting board bottoms that correspond moves to the outer left and right sides of detecting the main part through two rectangle openings of accessible respectively, water sample detection element has two sets ofly, and the equal level of water quality testing appearance that two sets of water sample detection element correspond evenly establishes at lift mount lower extreme, gather the water source of different gradient degree of depth through two sets of gradient sampling element, and detect simultaneously through two sets of water quality testing appearance, take the average value of two sets of detected values at last as detecting, increase the.
Further, it is equipped with ventilative window to detect main part upper end, every group water sample detecting element all is equipped with the mechanism that sweeps, it includes air compressor machine, arc-shaped blow and sweeps the dish to sweep the mechanism, the arc-shaped blow sweeps the dish and has a plurality ofly, and a plurality of arcs sweep dish and a plurality of water quality testing appearance one-to-one setting, all is equipped with a plurality of mouths that sweep on every arc-shaped blow and sweeps, blows outside air to every water quality testing appearance through a plurality of mouths that sweep through the air compressor machine on, avoids water quality testing appearance to make to be in humid state for a long time after using up, makes the part on the water quality testing appearance rust and lead.
Further, it is equipped with a plurality of stoving lamps to detect main part inner wall bilateral symmetry, dries to detecting the main part inside through the stoving lamp, avoids the inside humidity of device to cause each electric elements to damage, reduces the life of device.
Further, be equipped with humidity transducer in the detection main part, humidity transducer is connected with the controller, and after the pump unit used up, detect the humidity in the detection main part through humidity transducer to send the switch of signal to controller control stoving lamp, increase the intelligence of device.
Furthermore, the buckling parts of the water outlet cover and the filter cover can be disassembled in the extrusion process, and the water-absorbing sponge ball is replaceable, so that the water-absorbing sponge ball is prevented from being damaged after being used for a long time, and the sampling effect is prevented from being influenced.
Furthermore, connect the inside upper end of case greatly and be equipped with the branch liquid dish, just be equipped with on the branch liquid dish with connect the liquid mouth of the same quantity of ware greatly, divide the liquid mouth to stretch into respectively and correspond to connect the ware greatly in, the contaminated water source of gathering is shunted to a plurality of flourishing wares through each branch liquid mouth in, makes each water yield that connects in the ware greatly even, guarantees that every water quality testing appearance homoenergetic detects the contaminated water source, reduces detection error.
The working principle of the invention is as follows: when the device is used for detecting the pollutants in the water source area, the device is moved to the drinking water source area to be detected, firstly, the gradient sampling element is used for sampling the water in the drinking water source area, and the specific process is as follows: starting a corresponding micro driving motor I on each winding disc to enable the micro driving motor I to rotate reversely, driving a corresponding propeller to generate driving force to the gradient sampling head by a connecting wire wound on each winding disc after the gradient sampling head of the connecting wire end moves downwards and falls to the water surface, stopping the micro driving motor I, starting a micro driving motor II of the gradient sampling head, driving the corresponding propeller to generate driving force to the gradient sampling head by the micro driving motor II so as to enable the gradient sampling head to enter a water source ground, controlling different numbers of micro driving motors II on each gradient sampling head to work by a controller, enabling the number of the micro driving motors II in a working state on each gradient sampling head to be increased in a gradient manner so as to enable the propeller to generate driving force to each gradient sampling head in a gradient manner, completing sampling of water sources at different depths, filtering out larger solid magazines by water flow through a filter cover, entering a cavity, and adsorbing the entering water source by a water-absorbing sponge ball, starting a micro driving motor to rotate forwards, enabling the connecting line to drive the gradient sampling heads to move upwards until each gradient sampling head passes through the extrusion ring, enabling the extrusion ring to extrude the water outlet cover through extrusion, enabling the spring rod to be compressed, enabling the sliding ring to slide upwards on the vertical supporting rod, enabling the whole gradient sampling head to be compressed in the vertical direction and clamped in the corresponding extrusion ring, and enabling a water sample on the water-absorbing sponge ball to flow out through the one-way water outlet and the filter cover after being extruded; secondly, put into the water sample of sample and connect the component greatly in, concrete process is: starting a third micro driving motor, driving the sliding mounting plate to slide out of the detection main body by the third micro driving motor, stopping the third micro driving motor after the third micro driving motor is positioned at the right lower end of the sampling head extrusion sleeve, dripping a water sample extruded by the water absorption sponge ball into each containing vessel, and restarting the third micro driving motor to drive the sliding mounting plate to move into the detection main body and be positioned at the right lower end of the corresponding water quality detector; finally, the pollutant in the water sample of sample is detected, and the concrete process is as follows: and starting the lifting motor, driving the lifting fixing frame to slide downwards in the first sliding groove until each water quality detector is inserted into the corresponding containing vessel respectively, and stopping the lifting motor.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a drinking water source ground pollutant detection device based on gradient sampling, which is characterized in that the number of micro driving motors II in a working state on each gradient sampling head is increased in a gradient manner by controlling the micro driving motors II in different numbers on each gradient sampling head to work, so that a propeller generates driving force which is increased in a gradient manner on each gradient sampling head to finish sampling of water sources at different depths, and the water source sampling is reliable and representative; the water sources with different gradient depths are simultaneously collected through two groups of gradient sampling elements, and are simultaneously detected through two groups of water quality detectors, and finally, the average value of two groups of detection values is taken as detection, so that the accuracy of detection results is improved; the controller controls the operation of each electrical element, so that the reliability and the intelligence of the operation of the device are improved; the interior of the detection main body is dried by the drying lamp, so that the damage of each electrical element caused by the humidity in the device is avoided, and the service life of the device is shortened; the invention has the advantages of reliable sampling, accurate detection and intelligent integration, and is suitable for mass popularization.
Drawings
FIG. 1 is a schematic view of the slide out test body of the slide mounting plate of the present invention;
FIG. 2 is a schematic view of the slide-mounting plate of the present invention sliding into the inspection body;
FIG. 3 is a schematic structural view of a second sliding chute of the present invention;
FIG. 4 is a schematic view of the connection of the take-up spool of the present invention to a gradient sampling head;
FIG. 5 is a schematic diagram of the external structure of the gradient sampling head of the present invention;
FIG. 6 is a schematic diagram of the internal structure of the gradient sampling head of the present invention;
FIG. 7 is a schematic view of the internal structure of the propeller of the present invention;
FIG. 8 is a top view of the extrusion sheath of the sampling head of the present invention;
FIG. 9 is a schematic structural view of the arcuate purge tray of the present invention.
Wherein, 1-a detection main body, 10-a chute I, 11-a rectangular opening, 12-a chute II, 13-a ventilating window, 14-a drying lamp, 15-a humidity sensor, 2-a gradient sampling element, 20-a mounting rack, 200-a branch rack, 201-a winding disc, 202-a micro driving motor I, 21-a gradient sampling head, 210-an extrusion water outlet cover, 2100-a spring rod, 2101-a one-way water outlet, 211-a filter cover, 2110-a sliding bracket, 212-a supporting transverse vertical rod, 2120-a sliding ring, 213-a water-absorbing sponge ball, 214-a propeller, 215-a cavity, 22-a sampling head extrusion sleeve, 220-an extrusion ring, 3-a water sample containing element, 30-a sliding mounting plate, 31-a containing box, 310-a holding vessel, 311-a liquid separating disc, 3110-a liquid separating nozzle, 32-a miniature driving motor III, 4-a water sample detection element, 40-a lifting fixing frame, 41-a water quality detector, 42-a lifting motor, 43-a blowing mechanism, 430-an air compressor, 431-an arc blowing disc, 4310-a blowing port and 5-a controller.
Detailed Description
Example (b): as shown in fig. 1 and 2, the device for detecting pollutants in a drinking water source based on gradient sampling mainly comprises a detection main body 1, a gradient sampling element 2, a water sample holding element 3, a water sample detection element 4, a controller 5 and a power supply; the left end and the right end of the inner wall of the detection main body 1 are symmetrically provided with a first sliding groove 10, the left side and the right side of the side wall of the detection main body 1 are respectively provided with a rectangular opening 11, as shown in fig. 3, the bottom end inside the detection main body 1 is horizontally provided with a second sliding groove 12, the upper end of the detection main body 1 is provided with a ventilation window 13, the two sides of the inner wall of the detection main body 1 are symmetrically provided with 12 drying lamps 14, the inside of the detection main body 1 is dried through the drying lamps 14, the damage of each electrical element caused by the humidity inside the device is avoided, the service life of the device is shortened, a humidity sensor 15 is arranged in the detection main body 1, the humidity sensor 15 is connected with the controller 5, when the pump device is used up, the humidity in the detection main body 1 is detected through the humidity sensor 15, a signal is sent to the;
the gradient sampling elements 2 are divided into two groups, which respectively comprise a mounting rack 20, a gradient sampling head 21 and a sampling head extrusion sleeve 22, the mounting rack 20 is arranged at the left end and the right end of the outer wall of the detection main body 1 and is positioned at the same side of the rectangular opening 11, the bottom end of each mounting rack 20 is provided with 3 branch racks 200 as shown in figure 4, each branch rack 200 is provided with a winding disc 201, the central shaft of each winding disc 201 is connected with a micro driving motor I202, the gradient sampling heads 21 are provided with 6, 6 gradient sampling heads 21 are in one-to-one correspondence with 6 winding discs 201, as shown in figures 5 and 6, the gradient sampling head 21 comprises an extrusion water cover 210, a filter cover 211, a supporting transverse vertical rod 212, a water absorption sponge ball 213 and a propeller 214, the extrusion water cover 210 and the filter cover 211 are mutually buckled to form a cavity 215, the center of the upper bottom surface of the water cover 210 is connected with the winding discs 201 through a connecting wire, the upper, 33 one-way water outlets 2101 are uniformly arranged on the extrusion water outlet cover 210, a support vertical rod 212 is vertically arranged in the cavity 215, two ends of the support vertical rod 212 are respectively connected with two ends of the cavity 215, a sliding ring 2120 is sleeved on the support vertical rod 212, the inner wall of the filter cover 211 is connected with the sliding ring 2120 along the circumferential direction through 4 sliding supports 2110, a water absorption sponge ball 213 is arranged on the support vertical rod 212 in a penetrating way and is positioned at the upper end of the sliding ring 2120, the buckling part of the extrusion water outlet cover 210 and the filter cover 211 is detachable, the water absorption sponge ball 213 can be replaced, the damage of the water absorption sponge ball 213 after long-time use is avoided, the sampling effect is influenced, as shown in figure 7, 3 propellers 214 are respectively arranged on the outer wall of the extrusion water outlet cover 210, each propeller 214 is driven through a micro driving motor two 2140, the model of each propeller 214 is WT1-10B, as shown in figure 8, the extrusion rings 200 are in one-to-one correspondence with 6 gradient, is smaller than the diameter of the lower bottom surface of the extruded water cover 210;
the water sample holding components 3 are provided with two groups, which respectively comprise a sliding mounting plate 30, a holding box 31 and a micro driving motor three 32, the sliding blocks at the bottom ends of the two sliding mounting plates 30 can move to the left side and the right side outside the detection main body 1 through two rectangular openings 11 under the driving of the micro motor three 32, the holding box 31 is arranged on the sliding mounting plate 30, 3 holding dishes 310 are arranged in each holding box 31, the holding box 31 can move to the outside of the detection main body 1 through the rectangular openings 11, a liquid distribution plate 311 is arranged at the upper end in the holding box 31, liquid distribution nozzles 3110 with the same number as the holding dishes 310 are arranged on the liquid distribution plate 311, the liquid distribution nozzles 3110 respectively extend into the corresponding holding dishes 310, collected polluted water sources are distributed into the 3 holding dishes 310 through the liquid distribution nozzles 3110, so that the water quantity in each holding dish 310 is uniform, the polluted water sources can be detected by each water quality detector 41, and the detection error is reduced, the first micro-drive motor 202, the second micro-drive motor 2140 and the third micro-drive motor 32 are all produced by Shenzhen Delong great innovative technology Limited and have the model number of DLGM13-N10 VA;
the water sample detection elements 4 are provided with two groups, the water quality detectors 41 corresponding to the two groups of water sample detection elements 4 are horizontally and uniformly arranged at the lower end of a lifting fixing frame 40 and respectively comprise a lifting fixing frame 40, water quality detectors 41 and a lifting motor 42, sliders at the left end and the right end of the lifting fixing frame 40 can slide in corresponding sliding chutes 10 under the drive of the lifting motor 42, the water quality detectors 41 are Germany COLIY S300 plug-in type online solid moisture meters, the number of the water quality detectors 41 is 6, the lower end of the lifting fixing frame 40 is horizontally and uniformly arranged on the 6 water quality detectors 41, the 6 water quality detectors 41 are divided into two groups, each group corresponds to 3 containing vessels 310 one by one, water sources with different gradient depths are collected through two groups of gradient sampling elements 2 and are simultaneously detected through the two groups of water quality detectors 41, finally, the average value of the two groups of detection, the model of the lifting motor 42 is ZD122-4-1.5KW, each group of water sample detection elements 4 is provided with a purging mechanism 43, the purging mechanism 43 comprises an air compressor 430 and arc-shaped purging disks 431, the air compressor 430 is produced by Shuangsi electromechanical science and technology limited company in Changsha, the model is BK7.5-8G, 6 arc-shaped purging disks 431 are provided, the 6 arc-shaped purging disks 431 and 6 water quality detectors 41 are arranged in a one-to-one correspondence manner, as shown in FIG. 9, each arc-shaped purging disk 431 is provided with a plurality of purging ports 4310, external air is blown to each water quality detector 41 through the 30 purging ports 4310 by the air compressor 430, and the water quality detectors 41 are prevented from being in a wet state for a long time after being used, so that parts on the water quality detectors 41 are rusted to cause the damage of;
the controller 5 is connected with the drying lamp 14, the humidity sensor 15, the first miniature driving motor 202, the second miniature driving motor 2140, the third miniature driving motor 32, the air compressor 400, the water quality detector 41 and the lifting motor 42, wherein the controller 5 is produced by Shenzhen, Prolete electronics Limited and has the model number of KY 06S; the power supply provides power for the first micro driving motor 202, the second micro driving motor 2140, the third micro driving motor 32, the water quality detector 41 and the lifting motor 42.
When the device is used for detecting the pollutants in the water source area, the device is moved to the drinking water source area to be detected, firstly, the gradient sampling element 2 is used for sampling the water in the drinking water source area, and the specific process is as follows: starting a corresponding micro driving motor I202 on each winding disc 201 to reversely rotate, simultaneously driving the gradient sampling head 21 at the wire end to move downwards and fall to the water surface by the connecting wire wound on the winding disc 201, stopping the micro driving motor I202, starting a micro driving motor II 2140 of the gradient sampling head 21, driving a corresponding propeller 214 by the micro driving motor II 2140 to generate driving force to the gradient sampling head 21, thereby enabling the gradient sampling head 21 to enter the water source, controlling different numbers of micro driving motors II 2140 on each gradient sampling head 21 to work by a controller 5, enabling the number of the micro driving motors II 2140 in the working state on each gradient sampling head 21 to be increased in a gradient manner, thereby enabling the propeller 214 to generate driving force which is increased in a gradient manner to each gradient sampling head 21 to finish sampling of water sources at different depths, filtering out larger solid magazines by water flow through a filter cover 211, the water-absorbing sponge ball 213 absorbs the water source entering the cavity 215, the first micro driving motor 202 is started to rotate forwards, the connecting line drives the gradient sampling heads 21 to move upwards until each gradient sampling head 21 passes through the extrusion ring 200, the extrusion ring 200 extrudes the water cover 210 through extrusion, the spring rod 2100 is compressed, and meanwhile, the sliding ring 2120 slides upwards on the supporting vertical rod 212, so that the whole gradient sampling head 21 is compressed in the vertical direction and clamped in the corresponding extrusion ring 200, and a water sample on the water-absorbing sponge ball 213 flows out through the one-way water outlet 2101 and the filter cover 211 after being extruded; secondly, put into the water sample of sample and hold in the grafting element 3, concrete process is: starting a third micro driving motor 32, driving the sliding mounting plate 30 to slide out of the detection main body 1 by the third micro driving motor 32, stopping the third micro driving motor 32 after the third micro driving motor 32 is positioned at the lower end of the sampling head extrusion sleeve 22, dropping a water sample extruded by the water absorption sponge balls 213 into each containing vessel 310, and restarting the third micro driving motor 32 to drive the sliding mounting plate 30 to move into the detection main body 1 and be positioned at the lower end of the corresponding water quality detector 41; finally, the pollutant in the water sample of sample is detected, and the concrete process is as follows: and starting the lifting motor 42, driving the lifting fixing frame 40 to slide downwards in the first sliding groove 10 by the lifting motor 42 until each water quality detector 41 is inserted into the corresponding containing vessel 310, and stopping the lifting motor 42, wherein at the moment, the water sample detector 41 detects pollutants in the water sample and sends a signal to the controller 5.

Claims (6)

1. A drinking water source ground pollutant detection device based on gradient sampling is characterized by mainly comprising a detection main body (1), a gradient sampling element (2), a water sample holding element (3), a water sample detection element (4), a controller (5) and a power supply; the left end and the right end of the inner wall of the detection main body (1) are respectively and symmetrically provided with a first sliding chute (10), one side of the bottom end of the detection main body (1) is provided with a rectangular opening (11), and the bottom end in the detection main body (1) is horizontally provided with a second sliding chute (12);
the gradient sampling element (2) comprises a mounting rack (20), gradient sampling heads (21) and a sampling head extrusion sleeve (22), wherein the mounting rack (20) is arranged on the outer wall of the detection main body (1) and positioned at the same side of the rectangular opening (11), a plurality of branch racks (200) are arranged at the bottom end of the mounting rack (20), each branch rack (200) is provided with a winding disc (201), a central shaft of each winding disc (201) is connected with a micro driving motor I (202), a plurality of gradient sampling heads (21) are arranged, the gradient sampling heads (21) correspond to the winding discs (201) one by one, each gradient sampling head (21) comprises an extrusion water cover (210), a filter cover (211), a support transverse vertical rod (212), a water absorption sponge ball (213) and a propeller (214), and the extrusion water cover (210) and the filter cover (211) are buckled with each other to form a cavity (215), the center of the upper bottom surface of the extrusion water outlet cover (210) is connected with the winding disc (201) through a connecting wire, the upper end of the inside of the extrusion water outlet cover (210) is horizontally provided with a spring rod (2100), a plurality of one-way water outlets (2101) are evenly arranged on the extrusion water outlet cover (210), the support vertical rod (212) is vertically arranged in the cavity (215), and two ends of the support vertical rod are respectively connected with two ends of the cavity (215), a sliding ring (2120) is arranged on the support vertical rod (212) in a sleeved mode, the inner wall of the filter cover (211) is connected with the sliding ring (2120) along the circumferential direction through a plurality of sliding supports (2110), the water absorption sponge ball (213) penetrates through the support vertical rod (212) and is positioned at the upper end of the sliding ring (2120), the propellers (214) are respectively arranged on the outer wall of the extrusion water outlet cover (210), each propeller (214) is driven through a second micro driving motor (2140), and the extrusion sleeve (22) of, the sampling head extrusion sleeve (22) is provided with a plurality of extrusion rings (220), the extrusion rings (200) correspond to the gradient sampling heads (21) one by one, and the diameter of the extrusion rings (200) is larger than the diameter of the upper bottom surface of the extrusion water outlet cover (210) and smaller than the diameter of the lower bottom surface of the extrusion water outlet cover (210);
the water sample containing element (3) comprises a sliding mounting plate (30), a containing box (31) and a micro driving motor III (32), a sliding block at the bottom end of the sliding mounting plate (30) slides in the sliding chute II (12) under the driving of the micro motor III (32), the containing box (31) is arranged on the sliding mounting plate (30), a plurality of containing dishes (310) are arranged in the containing box (31), and the containing box (31) can move to the outside of the detection main body (1) through a rectangular opening (11);
the water sample detection element (4) comprises a lifting fixing frame (40), water quality detectors (41) and lifting motors (42), sliding blocks at the left end and the right end of the lifting fixing frame (40) can slide in corresponding sliding grooves I (10) under the driving of the lifting motors (42), a plurality of water quality detectors (41) are arranged at the lower ends of the lifting fixing frame (40) horizontally and uniformly, and the water quality detectors (41) correspond to the receiving containers (310) one by one;
the controller (5) is connected with the first micro driving motor (202), the second micro driving motor (2140), the third micro driving motor (32), the water quality detector (41) and the lifting motor (42); the power supply provides power for the first micro driving motor (202), the second micro driving motor (2140), the third micro driving motor (32), the water quality detector (41) and the lifting motor (42).
2. The device for detecting pollutants in drinking water source based on gradient sampling as claimed in claim 1, wherein there are two rectangular openings (11) respectively located at the left and right sides of the lower end of the detection main body (1), there are two groups of gradient sampling elements (2), and two corresponding mounting frames (20) are respectively arranged at the left and right sides of the outer wall of the detection main body (1), there are two groups of water sample receiving elements (3), and the sliders at the bottom ends of the two corresponding sliding mounting plates (30) can be moved to the left and right sides outside the detection main body (1) through the two rectangular openings (11), there are two groups of water sample detection elements (4), and the water quality detectors (41) corresponding to the two groups of water sample detection elements (4) are uniformly arranged at the lower end of the lifting fixing frame (40) in a horizontal manner.
3. The device for detecting pollutants in a drinking water source based on gradient sampling as claimed in claim 2, wherein the upper end of the detection main body (1) is provided with a ventilation window (13), each group of the water sample detection elements (4) is provided with a purging mechanism (43), the purging mechanism (43) comprises an air compressor (430) and a plurality of arc-shaped purging discs (431), the arc-shaped purging discs (431) are provided, the plurality of arc-shaped purging discs (431) are arranged in one-to-one correspondence with the plurality of water quality detectors (41), and each arc-shaped purging disc (431) is provided with a plurality of purging ports (4310).
4. The device for detecting pollutants in drinking water source based on gradient sampling as claimed in claim 1, wherein a plurality of drying lamps (14) are symmetrically arranged on two sides of the inner wall of the detection main body (1).
5. The device for detecting pollutants on drinking water source based on gradient sampling as claimed in claim 1, wherein a humidity sensor (15) is arranged in the detection body (1), and the humidity sensor (15) is connected with the controller (5).
6. The device for detecting contaminants in a drinking water source based on gradient sampling as claimed in claim 1, wherein the fastening of the extruded water outlet cover (210) and the filter cover (211) is detachable, and the water-absorbing sponge ball (213) is replaceable.
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