CN-121994546-A - Monitoring device and method for water environment ecological heavy metal pollution

CN121994546ACN 121994546 ACN121994546 ACN 121994546ACN-121994546-A

Abstract

The invention relates to a monitoring device and a method for environmental heavy metal pollution of water environment, which relate to the technical field of water environment monitoring and comprise a floating seat, a hollow rod vertically penetrating through the floating seat in a liftable manner and forming sliding fit with the floating seat, a telescopic monitoring piece arranged in the hollow rod, a lifting piece arranged on the floating seat and used for driving the hollow rod to vertically lift and descend along the hollow rod so as to adjust the monitoring depth, and at least one sampling cylinder circumferentially arranged at the lower peripheral end of the hollow rod.

Inventors

WANG TING
WU YANG
DU MINGYUE
WANG ZAIFENG
ZHANG SHUIYAN
LI TINGTING

Assignees

山东省济南生态环境监测中心

Dates

Publication Date: 20260508
Application Date: 20260302

Claims (10)

1. The utility model provides a monitoring devices for ecological heavy metal pollution of water environment, includes floating seat (1), its characterized in that still includes: the hollow rod (2) vertically penetrates through the floating seat (1) in a liftable manner and forms sliding fit with the floating seat (1); The telescopic monitoring piece (7) is arranged in the hollow rod (2), and the monitoring end of the telescopic monitoring piece can extend or retract along the axial direction of the hollow rod (2); the lifting piece (3) is arranged on the floating seat (1) and is used for driving the hollow rod (2) to vertically lift so as to adjust the monitoring depth; At least one sampling tube (5) is circumferentially arranged at the lower end of the periphery of the hollow rod (2), and a water collecting opening (52) capable of being opened and closed is formed in the side wall of the sampling tube (5); The cleaning ring (6) is rotatably connected to the bottom end of the hollow rod (2), and the cleaning ring (6) is used for synchronously wiping and cleaning the surface of the monitoring end when the monitoring end of the telescopic monitoring piece (7) extends out of or retracts into the hollow rod (2); The negative pressure linkage piece (8) is connected between the sampling tube (5) and the monitoring end of the telescopic monitoring piece (7), and when the monitoring end of the telescopic monitoring piece (7) extends out of the hollow rod (2), the negative pressure linkage piece (8) synchronously drives the air in the sampling tube (5) to be discharged; the deflection linkage piece (9) is in transmission connection between the negative pressure linkage piece (8) and the cleaning ring (6), and when the monitoring end of the telescopic monitoring piece (7) stretches out or retracts into the hollow rod (2), the cleaning ring (6) is rotated through the deflection linkage piece (9).
2. The monitoring device for water environment ecological heavy metal pollution according to claim 1, wherein the lifting piece (3) comprises a driving motor (31) arranged on the upper end face of the floating seat (1), the output end of the driving motor (31) is connected with a vertical screw rod (32), a screw rod nut seat (33) is arranged outside the screw rod (32), and the hollow rod (2) is arranged outside the screw rod nut seat (33) through a connecting block.
3. The monitoring device for water environment ecological heavy metal pollution according to claim 1, wherein the bottom end of the sampling tube (5) is connected with an exhaust pipe (51) in a penetrating way, and a one-way valve is arranged on the exhaust pipe (51).
4. The monitoring device for the ecological heavy metal pollution of the water environment according to claim 1, wherein the telescopic monitoring piece (7) comprises a heavy metal monitoring probe (71) and a first connecting rod (72) which are connected, and an electric telescopic rod (73) is arranged at the top end of the first connecting rod (72).
5. The monitoring device for aquatic environment ecological heavy metal pollution according to claim 4, characterized in that the negative pressure linkage (8) comprises: A cover (82) which is covered on the periphery of the water intake (52) in a lifting manner; A convex plate (83) fixed at the top end of the sampling tube (5), and a spring (84) is connected between the lower end surface of the convex plate (83) and the top end of the sealing cover (82); And the second connecting rod (85) is connected between the outer wall of the heavy metal monitoring probe (71) and the bottom end of the sealing cover (82).
6. The monitoring device for aquatic environment ecological heavy metal pollution according to claim 5, characterized in that the negative pressure linkage (8) further comprises: A piston (86) which is arranged in the sampling tube (5) in a sealing sliding manner; one end of the guide rod (81) is fixed at the bottom end of the piston (86), and the other end of the guide rod penetrates through the bottom end wall of the sampling tube (5) and is fixedly connected with the second connecting rod (85).
7. The monitoring device for aquatic environment ecological heavy metal pollution according to claim 6, characterized in that the deflection linkage (9) comprises: A straight rack (91) vertically fixed to the outside of one of the guide rods (81); A first straight gear (92) which is engaged with and connected to the straight rack (91), and a first bevel gear (93) is coaxially fixed on the first straight gear (92); a second bevel gear (94) engaged with and connected to the first bevel gear (93), and a second spur gear (95) is coaxially fixed to the second bevel gear (94); The arc-shaped rack (96) is fixed outside the cleaning ring (6), and the arc-shaped rack (96) is connected with the second straight gear (95) in a meshed mode.
8. The monitoring device for water environment ecological heavy metal pollution according to claim 7, wherein a plurality of cleaning cottons (61) are arranged in an annular array in the cleaning ring (6), a connecting ring (62) is arranged between the top end of the cleaning ring (6) and the sampling tube (5), and arc-shaped grooves (63) for avoiding the second connecting rods (85) are arranged on the cleaning cottons (61).
9. The monitoring device for water environment ecological heavy metal pollution according to claim 1, wherein a conical seat (4) is fixed at the outer lower end of the hollow rod (2), and the sampling tube (5) is installed on the conical seat (4).
10. A method for monitoring ecological heavy metal pollution in water environment, which adopts the monitoring device for ecological heavy metal pollution in water environment according to any one of claims 1 to 9, and is characterized by comprising the following steps: S1, placing the device in a water area to be detected, enabling a floating seat (1) to float on the water surface, starting a driving motor (31) to drive a screw rod (32) to rotate, driving a hollow rod (2) to move downwards vertically through a screw rod nut seat (33), and adjusting the bottom end of the hollow rod (2) to a preset monitoring depth; S2, starting the electric telescopic rod (73) to extend, driving the heavy metal monitoring probe (71) at the bottom end of the first connecting rod (72) to move downwards along the axial direction of the hollow rod (2), and carrying out vertical wiping cleaning on the surface of the cleaning cotton (61) at the inner side of the cleaning ring (6) in the process that the heavy metal monitoring probe (71) passes through the cleaning ring (6), and carrying out real-time monitoring on the heavy metal content after the heavy metal monitoring probe (71) completely stretches into water; S3, when the monitoring value exceeds a preset range, continuously controlling the electric telescopic rod (73) to extend, enabling the heavy metal monitoring probe (71) to further move downwards, synchronously pulling the sealing cover (82) to move downwards through the second connecting rod (85), opening the water sampling port (52), simultaneously driving the guide rod (81) and the piston (86) to move downwards in the sampling tube (5), discharging air in the sampling tube (5) along the exhaust pipe (51), enabling the sampling tube (5) to form negative pressure, enabling water to quickly enter the sampling tube (5) through the water sampling port (52) under the action of the negative pressure, and completing water sample collection; S4, after sampling is completed, the electric telescopic rod (73) is controlled to retract, the heavy metal monitoring probe (71) is driven to reset upwards, the sealing cover (82) is reset upwards under the action of the elastic force of the reset spring (84), the water sampling port (52) is plugged, water samples are prevented from leaking, wherein the heavy metal monitoring probe (71) moves down to fire or ascends, the cleaning ring (6) can be rotated through the deflection linkage piece (9), the cleaning is realized by rotating and wiping, then the recovery device performs further laboratory detection analysis on the water samples in the sampling tube (5), and the accuracy of monitoring results is improved.

Description

Monitoring device and method for water environment ecological heavy metal pollution Technical Field The invention relates to the technical field of water environment monitoring, in particular to a monitoring device and a method for water environment ecological heavy metal pollution. Background Heavy metal pollution in water environment has the characteristics of strong concealment, lasting toxicity and difficult natural degradation, and after heavy metals such as lead, cadmium, mercury and the like enter the water body through the ways of industrial emission, agricultural activities and the like, the heavy metals can be enriched along a food chain to form serious threat to the balance of an ecological system and the health of human beings, so that accurate and efficient monitoring of the heavy metal pollution in water environment is a key precondition for pollution prevention, control and treatment, and reliable monitoring technology and equipment support are needed. The existing water environment heavy metal monitoring device has the problems of single function and poor synergy, wherein part of the device can only realize heavy metal content detection at a single depth, is difficult to meet monitoring requirements of different water layers, and part of the device is designed for sampling and monitoring separation, and can finish water sample acquisition only by additional operation, so that the device is low in efficiency, and is easy to deviate from actual pollution conditions due to sampling delay. Disclosure of Invention In order to overcome the problems in the related art, the invention provides the monitoring device and the method for the ecological heavy metal pollution of the water environment, the synchronous linkage of the monitoring probe expansion and the water sample collection is realized through the negative pressure linkage piece, when the monitoring data exceeds the preset range, the sampling process can be automatically triggered, no additional driving part is needed, the water sample is quickly sucked through the negative pressure, and the operation process is simplified. In order to achieve the above purpose, the invention provides a monitoring device for water environment ecological heavy metal pollution, which comprises a floating seat and further comprises: the hollow rod vertically penetrates through the floating seat in a liftable manner and forms sliding fit with the floating seat; The telescopic monitoring piece is arranged in the hollow rod, and the monitoring end of the telescopic monitoring piece can extend or retract along the axial direction of the hollow rod; The lifting piece is arranged on the floating seat and used for driving the hollow rod to vertically lift so as to adjust the monitoring depth; the side wall of the sampling tube is provided with a water collecting port which can be opened and closed; The cleaning ring is rotatably connected to the bottom end of the hollow rod and is used for synchronously wiping and cleaning the surface of the monitoring end when the monitoring end of the telescopic monitoring piece extends out of or retracts back into the hollow rod; the negative pressure linkage piece is connected between the sampling tube and the monitoring end of the telescopic monitoring piece, and when the monitoring end of the telescopic monitoring piece extends out of the hollow rod, the negative pressure linkage piece synchronously drives the air in the sampling tube to be discharged; the deflection linkage piece is connected between the negative pressure linkage piece and the cleaning ring in a transmission way, and when the monitoring end of the telescopic monitoring piece stretches out or retracts back to the hollow rod, the cleaning ring is rotated through the deflection linkage piece. Preferably, the lifting piece comprises a driving motor arranged on the upper end face of the floating seat, the output end of the driving motor is connected with a vertical screw rod, a screw rod nut seat is arranged outside the screw rod, and the hollow rod is arranged outside the screw rod nut seat through a connecting block. Preferably, the bottom end of the sampling tube is connected with an exhaust pipe in a penetrating way, and a one-way valve is arranged on the exhaust pipe. Preferably, the telescopic monitoring piece comprises a heavy metal monitoring probe and a first connecting rod which are connected, and an electric telescopic rod is arranged at the top end of the first connecting rod. Preferably, the negative pressure linkage member includes: The sealing cover is covered on the periphery of the water collecting port in a lifting manner; the convex plate is fixed at the top end of the sampling tube, and a spring is connected between the lower end surface of the convex plate and the top end of the sealing cover; And the second connecting rod is connected between the outer wall of the heavy metal monitoring probe and the bottom end of the sealing cover. Preferably