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CN-120948453-B - Online monitoring instrument for total phosphorus in surface water

CN120948453BCN 120948453 BCN120948453 BCN 120948453BCN-120948453-B

Abstract

The invention provides an online monitor for total phosphorus in surface water, which relates to the technical field of optical detection and comprises a monitoring box, a driving mechanism, a sampling assembly and an optical detection assembly, wherein one end of the monitoring box is connected with a discharge pipeline, a side edge of the monitoring box is provided with a chromogenic reagent throwing port, the other end of the monitoring box is welded with an extension plate, the surface of the extension plate is provided with a clamping groove, the driving mechanism is arranged in the monitoring box, and one end of the driving mechanism is inserted with a lifting rod.

Inventors

  • YAN HONGSHENG
  • XIA WEITAO

Assignees

  • 北京嘉信恒生环保科技有限公司

Dates

Publication Date
20260508
Application Date
20250916

Claims (8)

  1. 1. The online monitor for total phosphorus in surface water comprises an online monitor body, and is characterized in that the online monitor body comprises a monitoring box (1), a driving mechanism (3), a sampling component (4) and an optical detection component (7), one end of the monitoring box (1) is connected with a discharge pipeline (6), a chromogenic reagent feeding port (5) is formed in the side edge of the monitoring box (1), an extension plate (2) is welded at the other end of the monitoring box (1), a clamping groove (8) is formed in the surface of the extension plate (2), the driving mechanism (3) is installed in the monitoring box (1), a lifting rod (20) is inserted into one end of the driving mechanism (3), the sampling component (4) is arranged at the tail end of the lifting rod (20), the optical detection component (7) is further installed in the monitoring box (1), a supporting plate is welded at the bottom of one end of the inner side of the monitoring box (1), a water pump (35) is screwed on the surface of the supporting plate, one end of the water pump (35) is connected with a sampling pipeline (23), the end of the water pump (35) is connected with the sampling pipeline (23) and the sampling component (4) is connected with the sampling component (4) to be detected by the sampling component (4), the other end of the optical detection assembly (7) is communicated with the discharge pipeline (6), the driving mechanism (3) covers the surface of the extension plate (2), the sampling assembly (4) comprises a sampling sleeve (24), a sealing plate (28), a hollowed-out plate (30) and a spiral blade (32), a limiting convex ring (21) is welded on the surface of the lifting rod (20), a bottom plate (26) is welded at the bottom end of the lifting rod (20), a butt joint bearing (27) is embedded on the surface of the bottom plate (26), the sealing plate (28) is installed at the top end of the butt joint bearing (27), a scraping rod (29) is installed at the side edge of the sealing plate (28), a sampling hole (25) is formed at the side edge of the sampling sleeve (24), the scraping rod (29) is pressed on the surface of the sampling sleeve (24), a central shaft (31) is inserted in the middle of the sealing plate (28), the hollowed-out plate (30) and the spiral blade (32) are welded on the surface of the central shaft (31), a butt joint bearing (27) is embedded on the surface of the hollowed-out plate (30), a spring (34) is inserted into a fixing frame (33) on the inner wall (24), and the spring (33) is welded at the bottom end of the fixing frame (33), and the two ends of the spring on the surface of the spring rod (33) are respectively welded and fixed with the fixing frame (34) and the central shaft (31), and the sampling pipeline (23) is communicated with the inside of the extraction sleeve (24).
  2. 2. The on-line surface water total phosphorus monitor according to claim 1, wherein the driving mechanism (3) comprises a motor (9), a driving shaft (10) and a transmission rod (12), the driving shaft (10) is inserted into the output end of the motor (9), a gear (11) is connected to the surface key of the driving shaft (10), an end plate (18) is integrally formed at the end part of the transmission rod (12), a leaning support (22) is integrally formed at the bottom of one end of the transmission rod (12), and the transmission rod (12) is pressed on the surface of the extension plate (2).
  3. 3. The on-line monitor for total phosphorus in surface water according to claim 2, wherein the shell of the motor (9) is in threaded connection with the surface of the monitoring box (1), the tail end of the driving shaft (10) is embedded into the inner wall of the monitoring box (1) through a bearing, the number of the gears (11) is two, and racks (13) are arranged on the surface of the driving rod (12).
  4. 4. The on-line monitor for total phosphorus in surface water according to claim 3, wherein each gear (11) is meshed with a corresponding rack (13), the propping frame (22) surrounds the side edge of the extension plate (2), the surface of the propping frame (22) is attached to the bottom surface of the extension plate (2), holes are formed in two ends of the monitoring box (1), and two ends of the transmission rod (12) are inserted and moved from the holes in the end part of the monitoring box (1) respectively.
  5. 5. The on-line monitor for total phosphorus in surface water according to claim 2, wherein a clamping block (19) is integrally formed at the bottom of the end plate (18), the lifting rod (20) penetrates out of the middle position of the clamping block (19) upwards, and the clamping block (19) and the sampling pipeline (23) are embedded into the clamping groove (8).
  6. 6. The on-line monitor for total phosphorus in surface water according to claim 2, wherein a lower hanging plate (14) is welded at the bottom of the transmission rod (12), a driven plate (16) is integrally formed at the bottom end of the lower hanging plate (14), an optical probe (15) is screwed at one end of the surface of the driven plate (16), a one-way pipeline (40) is connected to the inner side of the chromogenic reagent feeding port (5), a mixing interlayer (36) is sleeved in the middle of the one-way pipeline (40), and the surface of the one-way pipeline (40) is connected with a shell part of the mixing interlayer (36) through a torsion spring.
  7. 7. The on-line monitor for total phosphorus in surface water according to claim 6, wherein the end of the water pump (35) is connected to the inside of the mixing interlayer (36) through a communication hose (39), the side edge of the mixing interlayer (36) is connected to the light-transmitting detection layer (38) through a pipeline, and a plurality of elastic poking sheets (17) are inserted into the top end of the driven plate (16).
  8. 8. The on-line surface water total phosphorus monitor as set forth in claim 7, wherein a vibrating plate (37) is disposed at the bottom of the mixing interlayer (36), the elastic plectrum (17) is used for striking the side edge of the vibrating plate (37), and the top end of the optical probe (15) irradiates towards the bottom surface of the light-transmitting detection layer (38).

Description

Online monitoring instrument for total phosphorus in surface water Technical Field The invention relates to the technical field of optical detection, in particular to an on-line monitor for total phosphorus in surface water. Background The total phosphorus content is a key index for judging the eutrophication degree of the water body. The excessive phosphorus element stimulates the abnormal propagation of algae, so that the transparency of the water body is reduced, the dissolved oxygen is reduced, and the ecological unbalance is further caused. For example, eutrophication problems in closed waters (e.g., lakes, reservoirs) are particularly pronounced and can cause algae decay, deterioration of water quality, and even loss of water function. Regular monitoring of the total phosphorus content of surface water is therefore required. After the surface water total phosphorus on-line monitor in the prior art is installed, sampling treatment can only be carried out from fixed point positions and fixed depths in a water area to be detected, so that an obtained sample is difficult to uniformly reflect the average total phosphorus content level of a water area with a larger range, on the other hand, the extracted sample is mixed with a color reagent and subjected to an optical detection process, and the problem of residual adhesion of the surface of a mixed structure due to fixed detection positions and uneven mixing even in the prior art is also easy to cause interference influence on the detection result. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide an online monitor for total phosphorus in surface water, so as to solve the problems in the prior art, and the online monitor can acquire samples from different positions and depths in a water area to be detected, thereby ensuring that the acquired samples can uniformly reflect the average total phosphorus content level in a water area with a larger range, ensuring that the final detection result is more reliable and effective, and simultaneously being capable of automatically cleaning the surface of a sampling sleeve regularly by matching with a driving mechanism without additionally setting up an agitating structure, and further ensuring that a large amount of residues cannot remain among a plurality of detection processes. In order to achieve the aim, the online surface water total phosphorus monitor is achieved through the following technical scheme that the online surface water total phosphorus monitor comprises an online monitor body, wherein the online monitor body comprises a monitoring box, a driving mechanism, a sampling assembly and an optical detection assembly, one end of the monitoring box is connected with a discharge pipeline, a chromogenic reagent feeding port is formed in the side edge of the monitoring box, an extension plate is welded at the other end of the monitoring box, a clamping groove is formed in the surface of the extension plate, the driving mechanism is installed in the monitoring box, a lifting rod is inserted at one end of the driving mechanism, a sampling assembly is arranged at the tail end of the lifting rod, an optical detection assembly is further installed in the monitoring box, a supporting plate is welded at the bottom of one end of the inner side of the monitoring box, a water pump is connected to the surface of the supporting plate in a threaded mode, one end of the water pump is connected with the sampling pipeline, a sample to be detected is conveyed into the optical detection assembly through the sampling assembly by the water pump, the other end of the optical detection assembly is communicated with the discharge pipeline, and the surface of the driving mechanism is covered on the surface of the driving mechanism. Further, the actuating mechanism includes motor, drive shaft and transfer line, the output of motor cartridge has the drive shaft, the surface key of drive shaft is connected with the gear, the tip integrated into one piece of transfer line has the end plate, and integrated into one end bottom at the transfer line has the top to lean on the frame, the transfer line is pressed at the surface of extension board. Further, the shell part of the motor is in threaded connection with the surface of the monitoring box, the tail end of the driving shaft is embedded into the inner wall of the monitoring box through a bearing, the number of the gears is two, and racks are arranged on the surface of the driving rod. Further, each gear is meshed with a corresponding rack, the propping frame surrounds the side edge of the extending plate, the surface of the propping frame is attached to the bottom surface of the extending plate, holes are formed in two ends of the monitoring box, and two ends of the transmission rod are inserted and moved from the holes in the end part of the monitoring box respectively. Further, the sampling assembly comprises an extraction sleeve, a s