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CN-224231624-U - Water quality colorimeter calibrating device

CN224231624UCN 224231624 UCN224231624 UCN 224231624UCN-224231624-U

Abstract

The utility model relates to the technical field of water quality detection, in particular to a water quality colorimeter calibration device, which comprises a colorimeter body, wherein a colorimeter groove is formed in the right side of the colorimeter body, a colorimeter tube is inserted in the colorimeter groove, a detection light path extending into the colorimeter groove is formed in the colorimeter body, a strip-shaped cavity is formed in the colorimeter body and positioned in the detection light path, an elastic rope is arranged on the top wall of the strip-shaped cavity, a dark current calibration card which is connected in the strip-shaped cavity in a sliding manner is arranged at the bottom of the elastic rope, and an electromagnet is arranged on the bottom wall of the strip-shaped cavity.

Inventors

  • FENG XUAN
  • YAO YIJIE
  • LAN XUHUA

Assignees

  • 中计立讯计量检测(杭州)有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (6)

  1. 1. A water quality colorimeter calibration device comprises a top cover (2) hinged to a detection area on the right side of a colorimeter body (1), and is characterized in that a colorimeter groove (3) is formed in the right side of the colorimeter body (1), a colorimeter tube (4) is inserted into the colorimeter groove (3), a detection light path (5) extending into the colorimeter groove (3) is formed in the colorimeter body (1), a strip-shaped cavity (6) is formed in the colorimeter body (1) and located in the detection light path (5), an elastic rope (7) is mounted on the top wall of the strip-shaped cavity (6), a dark current calibration card (8) which is connected to the inside of the strip-shaped cavity (6) in a sliding mode is mounted on the bottom of the elastic rope (7), an electromagnet (9) is mounted on the bottom wall of the strip-shaped cavity (6), and a cleaning mechanism (11) for cleaning water marks remained on the outer wall of the colorimeter tube (4) is arranged in the colorimeter groove (3).
  2. 2. The water quality colorimeter calibration device according to claim 1 is characterized in that the area of the strip-shaped cavity (6) is larger than the area of the detection light path (5), and a magnetic block (10) is arranged at the bottom of the dark current calibration card (8).
  3. 3. The calibrating device for the water quality colorimeter according to claim 1, wherein the cleaning mechanism (11) comprises a placing plate (111) arranged in the colorimetric groove (3), an electromagnetic side plate (112) is arranged on the outer side of the top of the cleaning mechanism (11), a magnetic sliding block (113) is arranged in a sliding groove formed in the electromagnetic side plate (112), a plurality of springs (114) are arranged on an array on the outer surface of the magnetic sliding block (113), a cleaning cotton sliver (115) is arranged at the outer end of each spring (114), and a transmission assembly (116) for driving the cleaning cotton sliver to rotate is arranged at the bottom of the placing plate (111).
  4. 4. The device for calibrating the water quality colorimeter according to claim 3, wherein a groove matched with the diameter of the colorimetric tube (4) is formed in the center of the top of the placing plate (111), and a pressure sensor (117) is arranged in a mounting groove formed in the inner wall of the groove.
  5. 5. The water quality colorimeter calibration device according to claim 1, wherein the top of the colorimetric tube (4) is in threaded connection with a sealing cover (41), positioning blocks (42) are symmetrically arranged on two sides of the colorimetric groove (3), an ear plate (43) matched with the positioning blocks (42) is arranged on the outer wall of the colorimetric tube (4), and a positioning rod (44) matched with a plugging groove formed in the positioning blocks (42) is arranged at the bottom of the ear plate (43).
  6. 6. The water quality colorimeter calibration device according to claim 1, wherein a display screen (51) is arranged on the left side of the colorimeter body (1), and an operation button (52) is arranged below the display screen (51).

Description

Water quality colorimeter calibrating device Technical Field The utility model relates to the technical field of water quality detection, in particular to a water quality colorimeter calibrating device. Background The water quality chromaticity is one of key indexes for measuring the quality of the water body, and not only affects the appearance of the water body, but also can reflect some pollutants existing in the water, such as dissolved organic matters, suspended particles and the like. When the water quality colorimeter is restarted after being started for the first time or idle for a long time, dark current calibration and zero point calibration processes are needed to be executed in sequence so as to ensure measurement accuracy. However, in the dark current calibration link in the prior art, the traditional method mostly adopts a black card to insert into a colorimetric trough to shield a light path so as to measure electronic noise under the condition of no illumination. However, the operation relies on manual placement, and the situation that the lamination of the card and the edge of the colorimetric groove is not tight easily occurs, so that ambient light leaks into a detection light path, a dark current measured value is high virtually, and the accuracy of an instrument zero point is finally affected. In the zero point calibration and water sample detection stage, the residual water mark, fingerprint or dust and other pollutants on the outer wall of the colorimetric tube can obviously interfere with the transmission path of the optical signal. On the one hand, the impurities can scatter or absorb detection light to cause higher chromaticity measurement values, and on the other hand, the randomness of stain distribution can cause fluctuation of multiple measurement results of the same sample, so that the repeatability and the reliability of data are seriously affected. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the water quality colorimeter calibration device, which solves the technical problems that the light leakage phenomenon possibly occurs during dark current calibration in the prior art, the accuracy of colorimeter calibration is affected, and the residual water mark on the outer wall of the colorimetric tube can obviously interfere with the projection path of an optical signal and affect the calibration result during zero calibration, thereby achieving the purpose of improving the accuracy of water quality colorimeter calibration. In order to solve the technical problems, the water quality colorimeter calibration device comprises a top cover hinged to a detection area on the right side of a colorimeter body, a colorimetric groove is formed in the right side of the colorimeter body, a colorimetric tube is inserted into the colorimetric groove, a detection light path extending into the colorimetric groove is formed in the colorimeter body, a strip-shaped cavity is formed in the colorimeter body and located in the detection light path, an elastic rope is arranged on the top wall of the strip-shaped cavity, a dark current calibration card connected to the inside of the strip-shaped cavity in a sliding mode is arranged at the bottom of the elastic rope, an electromagnet is arranged on the bottom wall of the strip-shaped cavity, and a cleaning mechanism for wiping residual water marks on the outer wall of the colorimetric tube is arranged in the colorimetric groove. The area of the strip-shaped cavity is larger than the area of the detection light path, and the magnetic block is arranged at the bottom of the dark current calibration card. The cleaning mechanism comprises a placing plate arranged in a colorimetric groove, an electromagnetic side plate is arranged on the outer side of the top of the cleaning mechanism, a magnetic sliding block is arranged in a sliding groove formed in the electromagnetic side plate, a plurality of springs are arranged on an array of the outer surface of the magnetic sliding block, a cleaning cotton sliver is arranged at the outer end of each spring, and a transmission assembly for driving the placing plate to rotate is arranged at the bottom of the placing plate. The further improvement is that the center of the top of the placing plate is provided with a groove matched with the diameter of the colorimetric tube, and a pressure sensor is arranged in a mounting groove formed in the inner wall of the groove. The further improvement is that the top of the colorimetric tube is connected with a sealing cover in a threaded manner, positioning blocks are symmetrically arranged on two sides of the colorimetric tube, an ear plate matched with the positioning blocks is arranged on the outer wall of the colorimetric tube, and a positioning rod matched with the inserting groove arranged on the positioning blocks is arranged at the bottom of the ear plate. The colorimeter is further improved in that a display screen is arrang