Water quality heavy metal detection and early warning device for surface water

Abstract

The utility model relates to the technical field of water conservancy projects, and discloses a water quality heavy metal detection and early warning device for surface water, which comprises a case, four groups of side brackets are fixed on the side surfaces of the case, a telescopic structure for sampling is arranged in the middle of the bottom surface of the case, and the telescopic structure is connected with the case. A sampling structure used for sampling surface water is arranged on the telescopic structure, a water pump and an air pump are installed on the two sides of the bottom face of the machine box, and a detection structure used for detecting the surface water is arranged on the bottom face of the machine box and located on the outer side of the water pump and the outer side of the air pump. According to the water quality heavy metal detection and early warning device for the surface water, the case is placed and floats on the water surface, the sampling structure can be driven to move to different depths through the telescopic structure, the surface water at different depths is sampled through the sampling structure, and multiple groups of sampled surface water can be detected and alarmed through the detection structure; therefore, the water quality detection accuracy of the surface water is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy projects, in particular to a surface water quality heavy metal detection and early warning device. Background Art

[0002] Surface water refers to the general term for dynamic and static water on the land surface, including various liquid and solid water bodies, mainly rivers, lakes, swamps, glaciers, and ice sheets. It is one of the important sources of water for human life and a major component of water resources in various countries.

[0003] Application number CN202323248818.9 discloses a water quality detection device, including a floating support mechanism and a detection mechanism. The floating support mechanism includes a support plate and a rubber ring. The surface of the support plate is mounted with a mounting ring via a mounting post, and the rubber ring is mounted inside the mounting ring. The detection mechanism includes a sampling tube, which is arranged at the top of the support plate and has a sampling cavity inside.

[0004] When in use, the above patented structure mainly detects water quality and issues an alarm through pH detection electrodes, dissolved oxygen detection electrodes and heavy metal detection electrodes. However, the above patented structure can only detect water quality at a specified depth, which is inconvenient for detecting water quality at different depths. At the same time, when sampling water quality, the above patented structure uses a water suction hose to sample the same place and then distributes it to the sampling chamber, which is inconvenient for sampling different positions at the same time. The number of samples is small, thereby reducing the accuracy of water quality detection. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the deficiencies of the existing technology, the utility model provides a surface water heavy metal detection and early warning device, which solves the problem that it is inconvenient to detect water quality at different depths and to sample multiple groups of water quality at the same time when testing surface water quality.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned purpose of facilitating the detection of water quality at different depths and facilitating the simultaneous sampling of multiple groups of water quality when detecting the water quality of surface water, the utility model provides the following technical solutions: a surface water quality heavy metal detection and early warning device, comprising a chassis, four sets of side brackets are fixed to the sides of the chassis, a telescopic structure for sampling is provided in the middle of the bottom surface of the chassis, a sampling structure for sampling surface water is provided on the telescopic structure, a water pump and an air pump are installed on both sides of the bottom surface of the chassis, and a detection structure for detecting surface water is provided on the bottom surface of the chassis and outside the water pump and the air pump;

[0009] The side bracket includes an outer electric rod, a supporting buoy is installed on the bottom surface of the outer electric rod, and an air valve is installed on the supporting buoy;

[0010] The telescopic structure includes a spline hollow cylinder and a spline hollow shaft. A limit sliding groove is provided inside the spline hollow cylinder. A limit sliding ring is fixed on the spline hollow shaft. An adjusting float is fixed at the bottom end of the spline hollow shaft.

[0011] The sampling structure includes a No. 1 sampling barrel, a No. 2 sampling barrel, and a No. 3 sampling barrel, which are respectively installed at the bottom of a splined hollow shaft, and a sealing cover is threadedly connected to each of the No. 1 sampling barrel, the No. 2 sampling barrel, and the No. 3 sampling barrel, a sampling solenoid valve is installed in the middle of the surface of the sealing cover, and a rubber cap is installed on the outer surface of the sealing cover;

[0012] The water pump includes a water inlet pipe, which is inserted into the water and installed on the surface of the water pump. A water hose is installed at the bottom end of the water pump, and the bottom end of the water hose is connected to a regulating float. A drainage solenoid valve is installed on the side of the regulating float close to the water hose.

[0013] The air pump includes an air inlet pipe, and the air inlet pipe is located above the liquid level. The air inlet pipe is installed on the surface of the air pump. An air guide hose is installed at the bottom end of the air pump, and the bottom end of the air guide hose is connected to the regulating float. An exhaust solenoid valve is installed on the side of the regulating float close to the air guide hose.

[0014] The detection structure includes a vertical electric rod, which is installed on the bottom surface of the chassis and located on the outside of the water pump and the air pump. A linkage seat is fixed to the bottom end of the vertical electric rod, and a horizontal electric rod is installed on the inner side of the linkage seat. Three groups of horizontal electric rods are installed with mounting seats, and the three groups of mounting seats are respectively installed with pH detection electrode rods, dissolved oxygen detection electrode rods and heavy metal detection electrode rods. The bottom ends of the pH detection electrode rods, dissolved oxygen detection electrode rods and heavy metal detection electrode rods are installed with conical tips.

[0015] Preferably, four groups of the outer electric rods and support buoys are provided, and the four groups of support buoys are evenly distributed on the outside of the chassis.

[0016] Preferably, the spline hollow cylinder and the spline hollow shaft are staggered in the up and down directions, the limit slip ring is slidably connected to the limit slide groove, the spline hollow cylinder and the spline hollow shaft are slidably connected to each other through the limit slip ring and the limit slide groove, the spline hollow cylinder and the spline hollow shaft form a telescopic spline shaft cylinder, and the adjusting float is installed at the bottom end of the telescopic spline shaft cylinder.

[0017] Preferably, the No. 1 sampling barrel, the No. 2 sampling barrel and the No. 3 sampling barrel are respectively fixed to the bottom of the spline hollow shaft and are located above the regulating float.

[0018] Preferably, the water inlet pipe, water pump, water guide hose and regulating float are connected.

[0019] Preferably, the air inlet pipe, the air pump, the air guide hose and the regulating float are connected.

[0020] Preferably, the vertical electric rods and the horizontal electric rods are arranged perpendicular to each other, and there are three groups of vertical electric rods and three groups of horizontal electric rods respectively, and the pH detection electrode rods, dissolved oxygen detection electrode rods and heavy metal detection electrode rods are respectively installed on the three groups of horizontal electric rods through mounting brackets, and the pH detection electrode rods, dissolved oxygen detection electrode rods and heavy metal detection electrode rods are adapted to the positions of sampling barrel No. 1, sampling barrel No. 2 and sampling barrel No. 3.

[0021] Preferably, a PLC controller, a battery and a wireless transmitter are provided inside the chassis, and the PLC controller is electrically connected to the external electric rod, the sampling solenoid valve, the water pump, the drainage solenoid valve, the air pump, the exhaust solenoid valve, the vertical electric rod, the horizontal electric rod, the pH detection electrode rod, the dissolved oxygen detection electrode rod and the heavy metal detection electrode rod through wires.

[0022] Compared with the existing technology, the present invention provides a surface water heavy metal detection and early warning device, which has the following beneficial effects:

[0023] 1. The surface water heavy metal detection and early warning device, when it is necessary to sample the water quality, the water pump can inject water into the regulating float through the water inlet pipe and the water guide hose. At this time, the weight of the regulating float increases and sinks into the water. The air pump can inject air into the regulating float through the air inlet pipe and the air guide hose. At this time, the buoyancy of the regulating float increases and floats up. Therefore, the buoyancy of the regulating float in the water can be adjusted, so that the regulating float can rise or fall in the water, which can make the spline hollow cylinder and the spline hollow shaft The telescopic spline shaft cylinder drives the No. 1 sampling barrel, the No. 2 sampling barrel and the No. 3 sampling barrel to rise or fall in the water. After the No. 1 sampling barrel, the No. 2 sampling barrel and the No. 3 sampling barrel are adjusted to the appropriate depth, the sampling solenoid valve is opened to fill water into the No. 1 sampling barrel, the No. 2 sampling barrel and the No. 3 sampling barrel respectively. After filling water for a period of time, the sampling solenoid valve is closed, and the sampled water can be stored inside the No. 1 sampling barrel, the No. 2 sampling barrel and the No. 3 sampling barrel, so that water at different depths can be sampled and stored.

[0024] 2. The surface water quality heavy metal detection and early warning device, after the sampling is completed, starts the vertical electric rod and the horizontal electric rod respectively, which can respectively drive the pH detection electrode rod to move to the top of the No. 1 sampling bucket, the dissolved oxygen detection electrode rod to move to the top of the No. 2 sampling bucket, and the heavy metal detection electrode rod to move to the top of the No. 3 sampling bucket. Then, the vertical electric rod is extended, which can drive the pH detection electrode rod, the dissolved oxygen detection electrode rod and the heavy metal detection electrode rod to drive the conical tip on one side of each to penetrate the rubber cap, so that the pH detection electrode rod is inserted into the water inside the No. 1 sampling bucket, and the dissolved oxygen detection electrode rod is inserted into the water inside the No. 2 sampling bucket. The internal water and heavy metal detection electrode rods are inserted into the water inside the No. 3 sampling barrel to detect the water quality. Therefore, the pH value in the water can be detected through the PH detection electrode rod, the oxygen content in the water can be detected through the dissolved oxygen electrode, and the heavy metal detection electrode can detect the heavy metal content in the water, and then the water after sampling can be tested, and the PLC controller transmits the test results to the external receiving end through the wireless transmitter, and the external receiving end is electrically connected to the alarm. When the test results are abnormal, the alarm sounds an alarm to alert the staff to the abnormal water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the utility model;

[0026] Figure 2 For this utility model Figure 1 A partial enlarged schematic diagram of the structure at center A;

[0027] Figure 3 This is a bottom view of the structure of the utility model;

[0028] Figure 4 For this utility model Figure 3 A partial enlarged schematic diagram of the structure at point B in the middle;

[0029] Figure 5 This is the main cross-sectional view of the telescopic structure of the utility model;

[0030] Figure 6 For this utility model Figure 5 A partial enlarged schematic diagram of the structure at point C in the middle.

[0031] 1. Chassis; 2. Side bracket; 201. External electric rod; 202. Support buoy; 203. Air valve; 3. Telescopic structure; 301. Splined hollow cylinder; 302. Splined hollow shaft; 303. Limiting slide; 304. Limiting slip ring; 305. Adjusting buoy; 4. Sampling structure; 401. Sampling barrel No. 1; 402. Sampling barrel No. 2; 403. Sampling barrel No. 3; 404. Sealing cover; 405. Sampling solenoid valve; 406. Rubber cap ; 5. Water pump; 501. Water inlet pipe; 502. Water hose; 503. Drain solenoid valve; 6. Air pump; 601. Air inlet pipe; 602. Air hose; 603. Exhaust solenoid valve; 7. Detection structure; 701. Vertical electric pole; 702. Linkage seat; 703. Horizontal electric pole; 704. Mounting seat; 705. PH detection electrode rod; 706. Dissolved oxygen detection electrode rod; 707. Heavy metal detection electrode rod; 708. Conical tip. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-6 The utility model provides a surface water quality heavy metal detection and early warning device, comprising a chassis 1, four sets of side brackets 2 are fixed to the side of the chassis 1, a telescopic structure 3 for sampling is provided in the middle of the bottom surface of the chassis 1, a sampling structure 4 for sampling surface water is provided on the telescopic structure 3, a water pump 5 and an air pump 6 are installed on both sides of the bottom surface of the chassis 1, and a detection structure 7 for detecting surface water is provided on the bottom surface of the chassis 1 and outside the water pump 5 and the air pump 6;

[0034] The side bracket 2 includes an outer electric rod 201, a support buoy 202 is installed on the bottom surface of the outer electric rod 201, and an air valve 203 is installed on the support buoy 202;

[0035] The telescopic structure 3 includes a spline hollow cylinder 301 and a spline hollow shaft 302. A limit slot 303 is provided inside the spline hollow cylinder 301. A limit slip ring 304 is fixed on the spline hollow shaft 302. An adjustment float 305 is fixed at the bottom end of the spline hollow shaft 302.

[0036] The sampling structure 4 includes a No. 1 sampling barrel 401, a No. 2 sampling barrel 402, and a No. 3 sampling barrel 403. The No. 1 sampling barrel 401, the No. 2 sampling barrel 402, and the No. 3 sampling barrel 403 are respectively installed at the bottom of the splined hollow shaft 302. The No. 1 sampling barrel 401, the No. 2 sampling barrel 402, and the No. 3 sampling barrel 403 are threadedly connected with a sealing cover 404. A sampling solenoid valve 405 is installed in the middle of the surface of the sealing cover 404, and a rubber cap 406 is installed on the outer surface of the sealing cover 404.

[0037] The water pump 5 includes a water inlet pipe 501, which is inserted into the water and installed on the surface of the water pump 5. A water hose 502 is installed at the bottom end of the water pump 5. The bottom end of the water hose 502 is connected to the regulating float 305. A drainage solenoid valve 503 is installed on the side of the regulating float 305 close to the water hose 502.

[0038] The air pump 6 includes an air inlet pipe 601, which is located above the liquid level and is installed on the surface of the air pump 6. An air guide hose 602 is installed at the bottom end of the air pump 6. The bottom end of the air guide hose 602 is connected to the regulating float 305. An exhaust solenoid valve 603 is installed on the side of the regulating float 305 close to the air guide hose 602.

[0039] The detection structure 7 includes a vertical electric rod 701, which is installed on the bottom surface of the chassis 1 and is located on the outside of the water pump 5 and the air pump 6. A linkage seat 702 is fixed to the bottom end of the vertical electric rod 701, and a horizontal electric rod 703 is installed on the inner side of the linkage seat 702. Three groups of horizontal electric rods 703 are installed with mounting seats 704, and the three groups of mounting seats 704 are respectively installed with pH detection electrode rods 705, dissolved oxygen detection electrode rods 706 and heavy metal detection electrode rods 707. The bottom ends of the pH detection electrode rods 705, dissolved oxygen detection electrode rods 706 and heavy metal detection electrode rods 707 are installed with conical tips 708. Gas can be filled into the supporting float 202 through the air valve 203, so that the supporting float 202 can have sufficient buoyancy to support the various structures on the chassis 1. Then the device is placed in the water area to be detected, and the chassis 1 can be supported by the four groups of supporting floats 202 so that the chassis 1 can be located above the liquid surface.

[0040] Furthermore, four groups of outer electric rods 201 and supporting buoys 202 are provided, and the four groups of supporting buoys 202 are evenly distributed on the outside of the chassis 1, so that the chassis 1 and various structures on the chassis 1 can be supported by the four groups of supporting buoys 202.

[0041] Furthermore, the spline hollow cylinder 301 and the spline hollow shaft 302 are staggered in the vertical direction, the limiting slip ring 304 is slidably connected to the limiting slide groove 303, the spline hollow cylinder 301 and the spline hollow shaft 302 are slidably connected to each other through the limiting slip ring 304 and the limiting slide groove 303, the spline hollow cylinder 301 and the spline hollow shaft 302 form a telescopic spline shaft cylinder, and the adjusting float 305 is installed at the bottom end of the telescopic spline shaft cylinder, through the limiting slip ring 30 4 and the limiting slide groove 303 can prevent the spline hollow cylinder 301 and the spline hollow shaft 302 from separating from each other. The spline hollow cylinder 301 and the spline hollow shaft 302 form a telescopic spline shaft cylinder, which can drive the No. 1 sampling barrel 401, the No. 2 sampling barrel 402 and the No. 3 sampling barrel 403 to rise or fall in the water, and by descending the No. 1 sampling barrel 401, the No. 2 sampling barrel 402 and the No. 3 sampling barrel 403 to different depths, multiple groups of samples can be taken.

[0042] Furthermore, sampling barrel No. 1 401, sampling barrel No. 2 402 and sampling barrel No. 3 403 are respectively fixed at the bottom of the spline hollow shaft 302 and are located above the regulating float 305. When the regulating float 305 floats to the water surface, the telescopic spline shaft cylinder contracts. At this time, sampling barrel No. 1 401, sampling barrel No. 2 402 and sampling barrel No. 3 403 are located above the water surface, so that the buoyancy generated by the water surface on the regulating float 305 can support the regulating float 305.

[0043] Furthermore, the water inlet pipe 501, the water pump 5, the water hose 502 and the regulating float 305 are connected, so that the water pump 5 can inject water into the regulating float 305 through the water inlet pipe 501 and the water hose 502. At this time, the weight of the regulating float 305 increases and sinks into the water.

[0044] Furthermore, the air inlet pipe 601, the air pump 6, the air hose 602 and the regulating float 305 are connected, so that the air pump 6 can inject air into the regulating float 305 through the air inlet pipe 601 and the air hose 602. At this time, the buoyancy of the regulating float 305 increases and floats upward.

[0045] Furthermore, the vertical electric rod 701 and the horizontal electric rod 703 are arranged perpendicular to each other, and three groups of vertical electric rods 701 and horizontal electric rods 703 are each provided. The pH detection electrode rod 705, the dissolved oxygen detection electrode rod 706, and the heavy metal detection electrode rod 707 are respectively installed on the three groups of horizontal electric rods 703 through the mounting base 704. The pH detection electrode rod 705, the dissolved oxygen detection electrode rod 706, and the heavy metal detection electrode rod 707 are adapted to the positions of the No. 1 sampling barrel 401, the No. 2 sampling barrel 402, and the No. 3 sampling barrel 403. The pH measurement is completed by using a chemical cell composed of a measuring electrode and a reference electrode. The pH measuring electrode is also called the pH indicator electrode. It responds to the activity of hydrogen ions in the solution, and the electrode potential changes accordingly. The glass electrode is a hydrogen ion selective electrode, which is equivalent to a "salt bridge" that can produce an additional potential difference for the difference in hydrogen ion concentration on both sides of the glass membrane. After the glass membrane is immersed in water and hydrated, sodium ions will undergo ion exchange with the hydrogen ions in the solutions on both sides. This ion exchange will produce an additional potential difference on both sides of the glass membrane. This additional potential difference has a functional relationship with the hydrogen ion concentration of the solution to be measured outside the glass electrode, that is, it has a functional relationship with the pH value of the solution to be measured, and this additional potential difference is superimposed on the external reference electrode. The voltmeter is used to measure the actual electromotive force of the primary cell formed by the electrode and the reference electrode in the glass electrode. The additional potential difference can be determined and the pH value of the solution to be tested outside the glass electrode can be converted. Therefore, the pH value in water can be detected by the pH detection electrode rod 705. The dissolved oxygen electrode adopts a polarographic electrode. The positive electrode is composed of Ag and the negative electrode is composed of platinum. The electrolyte with special components is placed between the two. The electrodes are wrapped with a silicone rubber permeable membrane. When measuring, a polarization voltage of 675mV is applied between the electrodes. Oxygen permeates through the diaphragm and is consumed at the cathode. At the same time, an equal amount of oxygen is generated at the anode. This dynamic process is carried out until the oxygen partial pressures on both sides are equal. At the same time, equilibrium is reached. At this time, the current between the two electrodes is proportional to the oxygen partial pressure. The secondary meter detects this current, and then after a series of transformations, the oxygen concentration and oxygen content are obtained. Therefore, the dissolved oxygen electrode can detect the oxygen content in the water. Heavy metal detection electrodes are widely used in environmental monitoring and can be used to determine the heavy metal content in water samples. For example, bismuth film electrodes can be used to determine the content of trace lead in water samples and blood samples, and anodic stripping voltammetry isotopic bismuth film is used to determine zinc in blood samples. BDD electrodes can be used for online monitoring of the concentration of heavy metal ions in water bodies. Therefore, heavy metal detection electrodes can be used to detect the heavy metal content in water.

[0046] Furthermore, a PLC controller, a battery and a wireless transmitter are provided inside the chassis 1. The PLC controller is electrically connected to the external electric rod 201, the sampling solenoid valve 405, the water pump 5, the drainage solenoid valve 503, the air pump 6, the exhaust solenoid valve 603, the vertical electric rod 701, the horizontal electric rod 703, the pH detection electrode rod 705, the dissolved oxygen detection electrode rod 706 and the heavy metal detection electrode rod 707 through wires, so that the battery can supply power to each power-consuming structure. The PLC controller can enable the external electric rod 201, the sampling solenoid valve 405, the water pump 5, the drainage solenoid valve 503, the air pump 6, the exhaust solenoid valve 603, the vertical electric rod 701, the horizontal electric rod 703, the pH detection electrode rod 705, the dissolved oxygen detection electrode rod 706 and the heavy metal detection electrode rod 707 to work collaboratively or individually.

[0047] When in use, gas can be filled into the supporting float 202 through the air valve 203, so that the supporting float 202 can have sufficient buoyancy to support the various structures on the chassis 1, and then the device is placed in the water area to be tested. The chassis 1 can be supported by the four groups of supporting floats 202, so that the chassis 1 can be located above the liquid surface, and the height of the chassis 1 can be adjusted through the external electric rod 201, so that the center of gravity of the chassis 1 is lower, thereby improving the stability of the chassis 1 on the water surface. When it is necessary to sample the water quality, the water pump 5 can inject water into the regulating float 305 through the water inlet pipe 501 and the water guide hose 502. At this time, the weight of the regulating float 305 increases and sinks into the water, and the air pump 6 is adjusted through the air inlet pipe 6 01 and the air guide hose 602 can inject air into the regulating float 305. At this time, the buoyancy of the regulating float 305 increases and floats up. When the weight of the regulating float 305 is large, the water inside it can be discharged through the drain solenoid valve 503. When the buoyancy of the regulating float 305 is large, the air inside it can be discharged through the exhaust solenoid valve 603. Therefore, the buoyancy of the regulating float 305 in the water can be adjusted, so that the regulating float 305 can rise or fall in the water. When the regulating float 305 rises or falls in the water, it can drive the telescopic spline shaft cylinder composed of the spline hollow cylinder 301 and the spline hollow shaft 302 to extend and retract, which can make the telescopic spline shaft cylinder composed of the spline hollow cylinder 301 and the spline hollow shaft 302 Drive the No. 1 sampling barrel 401, No. 2 sampling barrel 402 and No. 3 sampling barrel 403 to rise or fall in the water. After the No. 1 sampling barrel 401, No. 2 sampling barrel 402 and No. 3 sampling barrel 403 are adjusted to a suitable depth, the sampling solenoid valve 405 is opened to inject water into the No. 1 sampling barrel 401, No. 2 sampling barrel 402 and No. 3 sampling barrel 403 respectively. After injecting water for a period of time, the sampling solenoid valve 405 is closed, and the sampled water can be stored in the No. 1 sampling barrel 401, No. 2 sampling barrel 402 and No. 3 sampling barrel 403. Therefore, water at different depths can be sampled and stored. After the sampling is completed, the regulating float 305 is floated to the water surface, and the telescopic spline shaft cylinder is retracted. At this time, the No. 1 sampling barrel 401, No. 2 sampling barrel 402 and No. 3 sampling barrel 403 are The second sampling barrel 402 and the third sampling barrel 403 are located above the water surface, so that the buoyancy generated by the water surface on the regulating float 305 can support the regulating float 305. Then, the vertical electric rod 701 and the horizontal electric rod 703 are respectively activated, which can respectively drive the pH detection electrode rod 705 to move above the first sampling barrel 401, the dissolved oxygen detection electrode rod 706 to move above the second sampling barrel 402, and the heavy metal detection electrode rod 707 to move above the third sampling barrel 403. Then, the vertical electric rod 701 is extended, which can drive the pH detection electrode rod 705, the dissolved oxygen detection electrode rod 706, and the heavy metal detection electrode rod 707 to drive the conical tip 708 on one side of each side to penetrate the rubber cap 406.Insert the pH detection electrode rod 705 into the water inside the No. 1 sampling barrel 401, the dissolved oxygen detection electrode rod 706 into the water inside the No. 2 sampling barrel 402, and the heavy metal detection electrode rod 707 into the water inside the No. 3 sampling barrel 403, and test the water quality. Therefore, the pH value in the water can be detected by the pH detection electrode rod 705, the oxygen content in the water can be detected by the dissolved oxygen electrode, and the heavy metal content in the water can be detected by the heavy metal detection electrode. Thus, the sampled water can be tested, and the PLC controller transmits the test results to the external receiving end through the wireless transmitter, and the external receiving end is electrically connected to the alarm. When the test results are abnormal, the alarm sounds an alarm to alert the staff to the abnormal water quality.

[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface water heavy metal detection and early warning device, comprising a chassis (1), characterized in that: Four sets of side brackets (2) are fixed to the side of the chassis (1); a telescopic structure (3) for sampling is provided in the middle of the bottom surface of the chassis (1); a sampling structure (4) for sampling surface water is provided on the telescopic structure (3); a water pump (5) and an air pump (6) are installed on both sides of the bottom surface of the chassis (1); a detection structure (7) for detecting surface water is provided on the bottom surface of the chassis (1) and outside the water pump (5) and the air pump (6); The side bracket (2) comprises an outer electric rod (201), a support buoy (202) is installed on the bottom surface of the outer electric rod (201), and an air valve (203) is installed on the support buoy (202); The telescopic structure (3) comprises a spline hollow cylinder (301) and a spline hollow shaft (302); a limit sliding groove (303) is provided inside the spline hollow cylinder (301); a limit sliding ring (304) is fixed on the spline hollow shaft (302); and an adjusting float (305) is fixed at the bottom end of the spline hollow shaft (302); The sampling structure (4) comprises a No. 1 sampling barrel (401), a No. 2 sampling barrel (402) and a No. 3 sampling barrel (403), wherein the No. 1 sampling barrel (401), the No. 2 sampling barrel (402) and the No. 3 sampling barrel (403) are respectively installed at the bottom of the spline hollow shaft (302), and the No. 1 sampling barrel (401), the No. 2 sampling barrel (402) and the No. 3 sampling barrel (403) are threadedly connected with a sealing cover (404), a sampling solenoid valve (405) is installed in the middle of the surface of the sealing cover (404), and a rubber cap (406) is installed on the outer surface of the sealing cover (404); The water pump (5) includes a water inlet pipe (501), and the water inlet pipe (501) is inserted into the water. The water inlet pipe (501) is installed on the surface of the water pump (5). A water guide hose (502) is installed at the bottom end of the water pump (5), and the bottom end of the water guide hose (502) is connected to the regulating float (305). A drainage solenoid valve (503) is installed on the side of the regulating float (305) close to the water guide hose (502); The air pump (6) includes an air inlet pipe (601), and the air inlet pipe (601) is located above the liquid level. The air inlet pipe (601) is installed on the surface of the air pump (6). An air guide hose (602) is installed at the bottom end of the air pump (6), and the bottom end of the air guide hose (602) is connected to the regulating float (305). An exhaust solenoid valve (603) is installed on the side of the regulating float (305) close to the air guide hose (602); The detection structure (7) comprises a vertical electric rod (701), which is mounted on the bottom surface of the chassis (1) and located outside the water pump (5) and the air pump (6). A linkage seat (702) is fixed to the bottom end of the vertical electric rod (701), and a transverse electric rod (703) is mounted on the inner side of the linkage seat (702). Three groups of the transverse electric rods (703) are mounted with mounting seats (704), and the three groups of mounting seats (704) are respectively mounted with a pH detection electrode rod (705), a dissolved oxygen detection electrode rod (706), and a heavy metal detection electrode rod (707). The bottom ends of the pH detection electrode rod (705), the dissolved oxygen detection electrode rod (706), and the heavy metal detection electrode rod (707) are mounted with a conical tip (708).

2. The surface water heavy metal detection and early warning device according to claim 1, characterized in that: Four groups of the outer electric rods (201) and the supporting buoys (202) are provided, and the four groups of supporting buoys (202) are evenly distributed outside the chassis (1).

3. The surface water heavy metal detection and early warning device according to claim 1, characterized in that: The spline hollow cylinder (301) and the spline hollow shaft (302) are staggered in the vertical direction, the limiting slip ring (304) is slidably connected to the limiting sliding groove (303), the spline hollow cylinder (301) and the spline hollow shaft (302) are slidably connected to each other through the limiting slip ring (304) and the limiting sliding groove (303), the spline hollow cylinder (301) and the spline hollow shaft (302) form a telescopic spline shaft cylinder, and the regulating float (305) is installed at the bottom end of the telescopic spline shaft cylinder.

4. The surface water heavy metal detection and early warning device according to claim 1, characterized in that: The No. 1 sampling barrel (401), No. 2 sampling barrel (402) and No. 3 sampling barrel (403) are respectively fixed at the bottom of the spline hollow shaft (302) and are located above the regulating float (305).

5. The surface water heavy metal detection and early warning device according to claim 1, characterized in that: The water inlet pipe (501), the water pump (5), the water guide hose (502) and the regulating float (305) are connected.

6. The surface water heavy metal detection and early warning device according to claim 1, characterized in that: The air inlet pipe (601), the air pump (6), the air guide hose (602) and the regulating float (305) are connected.

7. The surface water heavy metal detection and early warning device according to claim 1, characterized in that: The vertical electric rod (701) and the horizontal electric rod (703) are arranged perpendicular to each other. Three groups of the vertical electric rod (701) and the horizontal electric rod (703) are provided respectively. The pH detection electrode rod (705), the dissolved oxygen detection electrode rod (706) and the heavy metal detection electrode rod (707) are respectively installed on the three groups of the horizontal electric rods (703) through the mounting base (704). The pH detection electrode rod (705), the dissolved oxygen detection electrode rod (706) and the heavy metal detection electrode rod (707) are adapted to the positions of the first sampling barrel (401), the second sampling barrel (402) and the third sampling barrel (403).

8. The surface water heavy metal detection and early warning device according to claim 1, characterized in that: A PLC controller, a battery, and a wireless transmitter are provided inside the chassis (1); the PLC controller is electrically connected to an external electric rod (201), a sampling electromagnetic valve (405), a water pump (5), a drainage electromagnetic valve (503), an air pump (6), an exhaust electromagnetic valve (603), a vertical electric rod (701), a horizontal electric rod (703), a pH detection electrode rod (705), a dissolved oxygen detection electrode rod (706), and a heavy metal detection electrode rod (707) through wires.

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