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CN-224231689-U - Self-cleaning nitrite sensor

CN224231689UCN 224231689 UCN224231689 UCN 224231689UCN-224231689-U

Abstract

The utility model discloses a self-cleaning nitrite sensor which comprises a sensor body, an electrode sensing end, a signal processing and transmitting module and a PLC (programmable logic controller), wherein a self-cleaning mechanism is arranged inside the sensor body, a protection mechanism is arranged outside the sensor body, the inside of the sensor body is divided into a plurality of cavities by a dividing plate, the self-cleaning mechanism comprises a first micro cylinder, the first micro cylinder is fixedly arranged on the dividing plate on the inner wall of the sensor body, the output end of the first micro cylinder is fixedly connected with a connecting plate, and the connecting plate can slide inside the sensor body. The self-cleaning nitrite sensor can regularly scrape and clean the electrode sensing end by utilizing the cleaning unit, can prevent pollutants from accumulating on the surface of the electrode sensing end, fully contacts the electrode sensing end with a water sample, improves nitrite detection precision and accuracy, and improves practicability and functionality of the device.

Inventors

  • SU XIAOYU
  • YANG YANG
  • Yang Zeyang
  • YANG LI

Assignees

  • 南京奇崛电子科技有限公司

Dates

Publication Date
20260512
Application Date
20250508

Claims (6)

  1. 1. The self-cleaning nitrite sensor comprises a sensor body (111), an electrode sensing end (112), a signal processing and transmitting module (113) and a PLC (programmable logic controller) (114), and is characterized in that a self-cleaning mechanism (2) is arranged inside the sensor body (111), a protection mechanism (3) is arranged outside the sensor body (111), the inside of the sensor body (111) is divided into a plurality of cavities by a dividing plate, the self-cleaning mechanism (2) comprises a first micro cylinder (211), the first micro cylinder (211) is fixedly arranged on the dividing plate on the inner wall of the sensor body (111), a connecting disc (212) is fixedly connected with the output end of the first micro cylinder (211), the connecting disc (212) can slide inside the sensor body (111), a micro motor (213) is fixedly connected to the bottom end of the connecting disc (212), the output end of the micro motor (213) is connected with a gear (214) through a gear, the outer part of the gear (214) is connected with a rack plate (215) through tooth meshing, the bottom end of the rack plate (217) is fixedly connected with a connecting rod (218), and the bottom end of the connecting rod (218) is fixedly connected with a connecting rod (219).
  2. 2. The self-cleaning nitrite sensor according to claim 1, wherein the second micro cylinder (220) is fixedly connected to a dividing plate arranged on the inner wall of the sensor body (111), the output end of the second micro cylinder (220) is fixedly connected with a supporting plate (221), the upper end of the supporting plate (221) is fixedly connected with a supporting column (222), the supporting column (222) is slidably arranged inside a slide way (223), and the slide way (223) is arranged inside a rack plate (215).
  3. 3. The self-cleaning nitrite sensor according to claim 1, wherein the upper end of the connecting disc (212) is fixedly connected with a limiting column (224), the limiting column (224) is L-shaped, one end of the limiting column (224) far away from the connecting disc (212) is slidably arranged in a sliding groove (225), and the sliding groove (225) is arranged in the sensor body (111).
  4. 4. A self-cleaning nitrite sensor according to claim 1, wherein the electrode sensing tip (112), the signal processing and transmitting module (113), the PLC controller (114), the first micro-cylinder (211), the micro-motor (213) and the second micro-cylinder (220) are electrically connected.
  5. 5. A self-cleaning nitrite sensor according to claim 1, wherein the protective mechanism (3) comprises a protective housing (311), the protective housing (311) is assembled at the bottom end of the sensor body (111), the protective housing (311) can be installed outside the electrode sensing tip (112), an internal thread (312) is arranged inside the protective housing (311), and an external thread (313) is arranged outside the sensor body (111).
  6. 6. A self-cleaning nitrite sensor according to claim 5, wherein the outer surface of the protective housing (311) is provided with an anti-collision rubber strip and a rubber binding.

Description

Self-cleaning nitrite sensor Technical Field The utility model relates to the field of nitrite sensors, in particular to a self-cleaning nitrite sensor. Background Nitrite sensors are devices for detecting the nitrite content of a solution, based on the oxidation-reduction of nitrite at the surface of an electrode to produce an electrical signal. When nitrite contacts a specific electrode, electrons are transferred between the electrode and the solution to form current or potential change, and the nitrite content in the sample can be determined by measuring the magnitude of the electrical signals and comparing the electrical signals with nitrite standard solutions with known concentrations; The water quality nitrate and nitrite detection sensor with the existing bulletin number of CN216525780U comprises an external protection mechanism, an internal reinforcing mechanism and an interlayer anti-corrosion mechanism, wherein the internal reinforcing mechanism is arranged on the inner wall around the external protection mechanism, and the interlayer anti-corrosion mechanism is arranged inside the periphery of the external protection mechanism. The water quality nitrate and nitrite detection sensor plays a certain role in protecting the induction end fixedly connected between the bottom end of the equipment and the shell through the protective cover. However, the existing nitrite sensor detection electrode usually adopts an ion selective electrode, and when the nitrite sensor is used for detection, various suspended particles, colloid substances, organic matters and the like are contained in natural water or industrial wastewater and possibly attached to the surface of the electrode, so that an electrode sensing end cannot be fully contacted with a water sample, and the practicability of the device is reduced. Disclosure of utility model An object of the utility model is to provide a new technical solution for a self-cleaning nitrite sensor. According to the first aspect of the utility model, the self-cleaning nitrite sensor comprises a sensor body, an electrode sensing end, a signal processing and transmitting module and a PLC controller, wherein a self-cleaning mechanism is arranged inside the sensor body, a protection mechanism is arranged outside the sensor body, the inside of the sensor body is divided into a plurality of cavities by a dividing plate, the self-cleaning mechanism comprises a first micro cylinder, the first micro cylinder is fixedly arranged on the dividing plate on the inner wall of the sensor body, the output end of the first micro cylinder is fixedly connected with a connecting disc, the connecting disc can slide inside the sensor body, the bottom end of the connecting disc is fixedly connected with a micro motor, the output end of the micro motor is connected with a gear through a coupling, the outside of the gear is connected with a rack plate through tooth meshing, the bottom end of the rack plate is fixedly connected with a connecting rod, the bottom end of the connecting rod is fixedly connected with a connecting column through a connecting plate, and the bottom end of the connecting column is fixedly connected with a scraping ring. Preferably, the second micro cylinder is fixedly connected to the partition plate arranged on the inner wall of the sensor body, the output end of the second micro cylinder is fixedly connected with the support plate, the upper end of the support plate is fixedly connected with the support column, the support column is slidably arranged inside the slide way, and the slide way is arranged inside the rack plate. Preferably, the upper end fixedly connected with spacing post of connection pad, spacing post is L shape setting, the one end that the connection pad was kept away from to spacing post slides and sets up inside the spout, the spout is seted up inside the sensor body. Preferably, the electrode sensing end, the signal processing and transmitting module, the PLC controller, the first micro cylinder, the micro motor and the second micro cylinder are electrically connected. Preferably, the protection mechanism comprises a protection shell, the protection shell is assembled at the bottom end of the sensor body, the protection shell can be installed outside the electrode sensing end, an internal thread is arranged inside the protection shell, and an external thread is arranged outside the sensor body. Preferably, the outer surface of the protective shell is provided with an anti-collision adhesive tape and a rubber binding. 1. According to the self-cleaning nitrite sensor, the first micro cylinder, the connecting disc, the micro motor, the gear, the rack plate, the connecting rod, the connecting plate, the connecting post, the scraping ring, the second micro cylinder, the supporting plate, the supporting post and the slideway are matched, when a preset cleaning period is reached, the PLC controller is started to control the first micro cylinder to operate so