A device for detecting nitrite nitrogen content in water and wastewater

Abstract

The present invention belongs to the field of water treatment technology, and in particular, is a device for detecting the nitrite nitrogen content in water and wastewater, comprising a detection box with a supporting leg fixedly connected to the lower surface, a collection camera fixedly installed on the inner wall of the detection box located just above the comparison table, and a liquid inlet mechanism, a reaction mechanism and a cleaning mechanism are respectively provided on the inner wall of the detection box. The device for detecting the nitrite nitrogen content in water and wastewater, by providing a liquid inlet mechanism, a main liquid inlet discharges water and wastewater into a liquid inlet dropper, and puts water and wastewater into a reaction tube through the liquid inlet dropper, then introduces pure water to clean the liquid inlet dropper, then discharges the reagent into the reaction tube, then introduces pure water again to clean the pipeline and the liquid inlet dropper, and extracts the substance in the reaction tube through the liquid inlet dropper and drips it on the test paper, so as to quickly detect the accuracy of the nitrite nitrogen content detection in water and wastewater.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a device for detecting nitrite nitrogen content in water and wastewater. Background Art

[0002] Nitrite nitrogen content refers to the concentration of nitrogen contained in nitrite (NO2-) in water and wastewater. Nitrite nitrogen is usually used as an important indicator of nitrogen pollutants in water bodies. Its concentration can be expressed in different units, such as milligrams per liter (mg / L), milligrams per kilogram (mg / kg) or as a percentage in the form of nitrogen (%N). There are many methods to measure nitrite nitrogen content, including chemical analysis, chromatographic analysis and spectral analysis. In order to control and monitor the nitrite nitrogen content in water bodies, it is usually necessary to collect water samples regularly for testing, and take appropriate measures based on the measurement results to protect the water environment and human health.

[0003] In the existing nitrite nitrogen content detection process, water and wastewater need to be placed in a test tube and reagents need to be added to react with them. The existing detection device can only drip the reagents and let them blend naturally, resulting in low reaction efficiency between the reagents and water and wastewater, and failure to fully mix the reagents with the water and wastewater. After the test tube completes the nitrite nitrogen content detection, the liquid inlet dropper, the test tube and the colorimetric table cannot be cleaned, affecting the accuracy of the detection device in detecting the nitrite nitrogen content in water and wastewater next time. Summary of the invention

[0004] Based on the existing technical problems, the present invention proposes a device for detecting nitrite nitrogen content in water and wastewater.

[0005] The present invention proposes a device for detecting nitrite nitrogen content in water and wastewater, comprising a detection box with supporting legs fixedly connected to the lower surface, a processing window being provided on the front surface of the detection box, a sealing door being hingedly installed on the inner wall of the processing window through a pin shaft, a liquid storage tank being provided at the bottom of the detection box, a comparison table being fixedly installed on the inner wall of the detection box, a collection camera being fixedly installed on the inner wall of the detection box directly above the comparison table, and a liquid inlet mechanism, a reaction mechanism and a cleaning mechanism being respectively provided on the inner wall of the detection box.

[0006] The liquid inlet mechanism adds water and wastewater, reagents and pure water into the reaction mechanism, and the liquid inlet mechanism includes an integrated block. The inner wall of the detection box is equipped with two symmetrically arranged threaded rods through bearings.

[0007] The reaction mechanism is used to control the reaction tube to swing to accelerate the mixing of the reagent and the object to be tested, and to facilitate pouring out the liquid in the reaction tube.

[0008] Wherein, the cleaning mechanism is used to clean the test paper on the comparison table, and the cleaning mechanism includes a collecting seat with a J-shaped structure.

[0009] Preferably, side ears are fixedly connected to both side surfaces of the sealing door, a plug interface is provided on the front side surface of the detection box, a rotation limit opening is provided on the inner wall of one end of the plug interface, and the inner wall of the side ear is movably connected to a limit rod which is movably connected to the inner wall of the plug interface and rotatably connected to the inner wall of the rotation limit opening.

[0010] Through the above technical solution, after the limit rod is inserted into the plug-in interface, the end thereof can enter the rotation limit opening. Due to the shape characteristics of the limit rod, after the limit rod rotates, the two gear bars on the limit rod cooperate with the rotation limit opening to prevent the limit rod from falling out.

[0011] Preferably, a driving motor is fixedly mounted on one end surface of the detection box, and pulleys are fixedly sleeved on the outer surface of the main shaft of the driving motor and the outer surface of one end of the two threaded rods extending to the outside of the detection box, and the three pulleys are connected by a transmission belt.

[0012] Through the above technical solution, the driving motor drives one of the pulleys to rotate, and the transmission belt cooperates with the three pulleys to control the two threaded rods to rotate synchronously, thereby controlling the integrated platform to move.

[0013] Preferably, the inner wall of the integrated block is provided with two symmetrically arranged threaded openings, the outer surface of the threaded rod is threadedly connected to the inner wall of the threaded opening, the inner walls at both ends of the threaded hole are fixedly connected with a protective sleeve sleeved on the outer surface of the threaded rod, and the free end of the protective sleeve is fixedly connected to the inner wall of the detection box.

[0014] Through the above technical solution, the protective sleeve protects the two threaded rods to prevent the threaded rods from being corroded, and through the cooperation between the integrated block and the threaded rod, the threaded rod drives the integrated block to move during the rotation process.

[0015] Preferably, a liquid inlet dropper is sleeved on the inner wall of the integrated block, and a main liquid inlet, a pure water liquid inlet and a reagent liquid inlet are respectively opened on one side surface of the integrated block. The inner walls of the main liquid inlet, the pure water liquid inlet and one end of the reagent liquid inlet are all sleeved with a water inlet pipe. The main liquid inlets are symmetrically distributed and are respectively interconnected with the inner walls of the two liquid inlet droppers. The inner wall of the pure water liquid inlet is T-shaped, and the two outlet ends are respectively interconnected with the inner walls of the two main liquid inlets. The reagent liquid inlet is interconnected with the middle inner wall of the pure water liquid inlet, and the inner walls of the two water outlet ends of the pure water liquid inlet and the inner wall of the reagent liquid inlet are both provided with a one-way valve.

[0016] Through the above technical solution, the main liquid inlet, pure water inlet and reagent inlet respectively add water and wastewater, pure water and reagents into the reaction tube, and the main liquid inlet, pure water inlet and reagent inlet are controlled to be open and closed by a one-way valve.

[0017] Preferably, the reaction mechanism includes a reaction table, the inner bottom wall of the detection box is provided with a connection port for installing a lifting hydraulic cylinder, the top end of the hydraulic rod of the lifting hydraulic cylinder is fixedly connected to the lower surface of the reaction table, the upper surface of the reaction table is provided with two symmetrically arranged receiving grooves with obtuse inner wall angles, the inner wall of the receiving groove is provided with a bottom bracket with a semicircular arc cross-section structure installed through a pin shaft, and the reaction test tube is fixedly installed on the inner wall of the bottom bracket.

[0018] Through the above technical solution, the receiving groove is installed on the bottom bracket, and the blunt-angle shape of the receiving groove enables the reaction tube to be deflected downward until the opening is tilted downward, so that the internal substances can be completely poured out.

[0019] Preferably, the inner wall of the reaction table is provided with an installation opening for installing a forward and reverse motor, the inner walls at both ends of the installation opening are provided with socket interfaces, the inner wall of the socket interface is provided with a guide groove penetrating to the outer surface of the reaction table, the inner top wall of the guide groove is provided with a transmission opening, and the inner wall of the transmission opening is provided with a transmission gear fixedly socketed with the outer surface of the pin shaft.

[0020] Through the above technical solution, the mounting opening is used to mount the forward and reverse motor, and the rotation of the transmission gear controls the bottom bracket to drive the reaction tube to deflect.

[0021] Preferably, the forward and reverse motor is installed with a bidirectional screw through a reduction box, the inner wall of the guide groove is sleeved with a rack threadedly connected to the outer surface of the bidirectional screw, and the rack is meshed with the transmission gear to control the angle deflection of the base.

[0022] Through the above technical solution, the guide groove limits the rack, and the two-way screw and the rack cooperate, so that the rack moves in the guide groove as the two-way screw rotates, and then the base rotates through the engagement of the transmission gear and the rack.

[0023] Preferably, a linkage slide groove is provided on one end surface of the collecting seat and extends to the other end surface of the collecting seat, a sealing curtain is slidably inserted into the inner wall of the linkage slide groove, a pushing hydraulic cylinder is fixedly installed on the rear inner wall of the detection box, a cleaning seat is provided on one side surface of the upper end of the collecting seat, a hydraulic rod of the pushing hydraulic cylinder is fixedly connected to one side surface of the cleaning seat, and one end surface of the sealing curtain is fixedly connected to one side surface of the cleaning seat.

[0024] Through the above technical solution, the hydraulic cylinder is pushed to control the cleaning seat to move, and the sealing curtain is driven to move while the cleaning seat moves, thereby controlling the opening and closing of the sealing curtain in front of the collecting seat.

[0025] Preferably, a cleaning roller is installed on the front inner wall of the cleaning seat via a pin shaft, a connecting strip is fixedly connected to the lower surface of the cleaning seat, and a wiping strip is connected to the lower surface of the connecting strip via a mother-and-child sticker.

[0026] With the above technical solution, when the cleaning seat moves, the cleaning roller contacts the surface of the comparison table, causing the cleaning roller to rotate, pushing the test paper into the collection seat, and cleaning the surface of the comparison table through the wiping strip.

[0027] The beneficial effects of the present invention are:

[0028] 1. By setting up a liquid inlet mechanism, the main liquid inlet discharges water and wastewater into the liquid inlet dropper, and the water and wastewater are placed into the reaction tube through the liquid inlet dropper, and then pure water is introduced to clean the liquid inlet dropper, and then the reagent is discharged into the reaction tube, and then pure water is introduced again to clean the pipeline and the liquid inlet dropper, and the substance in the reaction tube is extracted through the liquid inlet dropper and dripped onto the test paper, so as to quickly detect the accuracy of nitrite nitrogen content detection in water and wastewater.

[0029] 2. By setting up a reaction mechanism, when the reagent reacts with water or wastewater, the forward and reverse motor drives the bidirectional screw to rotate, and the rack is limited by the guide chute, and the bidirectional screw and the rack are matched, so that the rack moves in the guide chute as the bidirectional screw rotates, and then the bottom bracket rotates through the meshing of the transmission gear and the rack, driving the reaction tube to deflect the angle, thereby accelerating the reaction efficiency. After the reaction is completed, the bottom bracket can also be controlled to rotate to pour the substance in the reaction tube into the liquid storage tank;

[0030] The liquid inlet dropper drops the extracted liquid onto the test paper on the comparison table. After a period of reaction, the camera collects the color of the reaction result of the test paper. The RGB value of the color on the test paper is extracted through the equipped color picker and compared with the standard value to obtain the nitrite nitrogen content in the water and wastewater.

[0031] 3. By setting up a cleaning mechanism, the hydraulic cylinder is pushed to control the cleaning seat to move forward, the cleaning roller is controlled to rotate, and the test paper on the comparison table is pushed forward. When the cleaning seat moves, the sealing curtain is controlled to move in the linkage slide groove. As the sealing curtain moves, the front end of the collection seat is opened, and the test paper is pushed into the collection seat for collection. At the same time, the wiping strip wipes the upper surface of the comparison table. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1A schematic diagram of a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0033] Figure 2 This is a stereoscopic diagram of the structure of a collection camera for a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0034] Figure 3 A three-dimensional diagram of the sealing door structure of a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0035] Figure 4 A three-dimensional diagram of the threaded rod structure of a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0036] Figure 5 A three-dimensional diagram of the structure of a rotating stopper for a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0037] Figure 6 A three-dimensional diagram of a limit rod structure for a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0038] Figure 7 A three-dimensional diagram of the reaction table structure of a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0039] Figure 8 A three-dimensional diagram of the structure of a receiving tank for a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0040] Fig. 9 A three-dimensional diagram of a rack structure for a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0041] Fig.10 A three-dimensional diagram of the structure of a collecting seat for a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0042] Fig.11 A three-dimensional diagram of a sealing curtain structure for a device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention;

[0043] Fig.12 A device for detecting nitrite nitrogen content in water and wastewater proposed by the present invention Fig.11 A magnified view of the structure in the middle.

[0044] In the figure: 1. detection box; 2. sealing door; 3. side ears; 4. plug interface; 5. rotation limit port; 6. limit rod; 7. liquid storage tank; 8. comparison table; 9. acquisition camera; 10. integrated block; 101. threaded rod; 102. drive motor; 103. pulley; 104. protective cover; 105. liquid inlet dropper; 106. main liquid inlet; 107. pure water inlet; 108. reagent inlet; 11. reaction table; 111. Lifting hydraulic cylinder; 112, containing groove; 113, bottom support; 1131, reaction tube; 114, forward and reverse motor; 115, socket; 116, guide slide; 117, transmission gear; 118, bidirectional screw; 119, rack; 12, collecting seat; 121, linkage slide; 122, sealing curtain; 123, pushing hydraulic cylinder; 124, cleaning seat; 125, cleaning roller; 126, connecting strip; 127, wiping strip. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Reference Figure 1-Figure 12 , a device for detecting nitrite nitrogen content in water and wastewater, comprising a detection box 1 with supporting legs fixedly connected to the lower surface. In order to facilitate the cleaning of waste liquid and used test paper in the detection box 1, a processing window is opened on the front side surface of the detection box 1, and a sealing door 2 is hingedly installed on the inner wall of the processing window through a pin shaft. In order to lock the sealing door 2, side ears 3 are fixedly connected to the two side surfaces of the sealing door 2. Further, in order to facilitate the locking of the sealing door 2, an insertion port 4 is opened on the front side surface of the detection box 1, and a rotation limit opening 5 is opened on the inner wall of one end of the insertion port 4, and a limit rod 6 is movably sleeved on the inner wall of the side ear 3, which is movably sleeved with the inner wall of the insertion port 4 and rotatably sleeved with the inner wall of the rotation limit opening 5, and the end of the limit rod 6 can enter the rotation limit opening 5 after the limit rod 6 is inserted into the insertion port 4. Through the shape characteristics of the limit rod 6, after the limit rod 6 rotates, the two gear bars on the limit rod 6 cooperate with the rotation limit opening 5 to prevent the limit rod 6 from falling out.

[0047] In order to collect waste liquid, a liquid storage tank 7 is opened at the bottom of the detection box 1. In order to detect the nitrite nitrogen content in water and wastewater by colorimetry, a comparison table 8 is fixedly installed on the inner wall of the detection box 1, and a collection camera 9 is fixedly installed on the inner wall of the detection box 1 directly above the comparison table 8. The colors of the two test papers are collected by the collection camera 9. The inner wall of the detection box 1 is respectively provided with a liquid inlet mechanism, a reaction mechanism and a cleaning mechanism.

[0048] like Figure 1-Figure 4As shown, the liquid inlet mechanism adds water and wastewater, reagents and pure water into the reaction mechanism, and the liquid inlet mechanism includes an integrated block 10. In order to control the integrated block 10 to reciprocate along the length direction of the detection box 1, two symmetrically arranged threaded rods 101 are installed on the inner wall of the detection box 1 through bearings. Furthermore, in order to simultaneously control the two threaded rods 101 to move synchronously, a driving motor 102 is fixedly installed on one end surface of the detection box 1, and pulleys 103 are fixedly sleeved on the outer surface of the main shaft of the driving motor 102 and the outer surface of one end of the two threaded rods 101 extending to the outside of the detection box 1. The three pulleys 103 are connected by a transmission belt. The driving motor 102 drives one of the pulleys 103 to rotate, and the cooperation of the transmission belt and the three pulleys 103 controls the two threaded rods 101 to rotate synchronously, thereby controlling the movement of the integrated platform.

[0049] In order to control the movement of the integrated block 10 by the rotation of the threaded rod 101, two symmetrically arranged threaded openings are opened on the inner wall of the integrated block 10, so that the outer surface of the threaded rod 101 is threadedly connected to the inner wall of the threaded opening. In order to protect the threaded rod 101, the inner walls at both ends of the threaded hole are fixedly connected with a protective sleeve 104 sleeved on the outer surface of the threaded rod 101, so that the free end of the protective sleeve 104 is fixedly connected to the inner wall of the detection box 1. The protective sleeve 104 protects the two threaded rods 101 to prevent the threaded rods 101 from being corroded. Through the cooperation between the integrated block 10 and the threaded rod 101, the threaded rod 101 drives the integrated block 10 to move during the rotation process.

[0050] The inner wall of the integrated block 10 is sleeved with a liquid inlet dropper 105. In order to add water and wastewater, pure water, and reagents into the reaction tube 1131, a main liquid inlet 106, a pure water liquid inlet 107, and a reagent liquid inlet 108 are respectively opened on one side surface of the integrated block 10. The inner walls of one end of the main liquid inlet 106, the pure water liquid inlet 107, and the reagent liquid inlet 108 are sleeved with water inlet pipes, and different liquids are discharged through each water inlet pipe. The main liquid inlet 106 is symmetrically distributed and is respectively connected to the inner walls of the two liquid inlet droppers 105. The inner wall of the pure water liquid inlet 107 is connected to the inner wall of the reagent liquid inlet 108. The wall is T-shaped, and the two outlet ends are respectively interconnected with the inner walls of the two main liquid inlets 106, the reagent inlet 108 is interconnected with the middle inner wall of the pure water inlet 107, and the inner walls of the two water outlet ends of the pure water inlet 107 and the inner wall of the reagent inlet 108 are both provided with one-way valves. The main liquid inlet 106, the pure water inlet 107 and the reagent inlet 108 respectively add water and wastewater, pure water and reagents into the reaction tube 1131, and the main liquid inlet 106, the pure water inlet 107 and the reagent inlet 108 are controlled to be connected and cut off by the one-way valve.

[0051] By setting up a liquid inlet mechanism, the main liquid inlet 106 discharges water and wastewater into the liquid inlet dropper 105, and the water and wastewater are placed into the reaction tube 1131 through the liquid inlet dropper 105, and then pure water is introduced to clean the liquid inlet dropper 105, and then the reagent is discharged into the reaction tube 1131, and then pure water is introduced again to clean the pipeline and the liquid inlet dropper 105, and the substance in the reaction tube 1131 is extracted through the liquid inlet dropper 105 and dripped onto the test paper, so as to quickly detect the accuracy of the nitrite nitrogen content detection in water and wastewater.

[0052] like Figure 3 and Figure 7-Figure 9 As shown, the reaction mechanism is used to control the reaction tube 1131 to swing to accelerate the mixing of the reagent and the test object, and to facilitate the pouring out of the liquid in the reaction tube 1131. The reaction mechanism includes a reaction table 11. In order to control the lifting and lowering of the reaction table 11 and cooperate with the liquid inlet dropper 105, a connection port for installing a lifting hydraulic cylinder 111 is opened on the inner bottom wall of the detection box 1. The top of the hydraulic rod of the lifting hydraulic cylinder 111 is fixedly connected to the lower surface of the reaction table 11. The reaction table 11 is driven to rise and fall by the lifting hydraulic cylinder 1 ... 131 is placed, and two symmetrically arranged receiving grooves 112 with obtuse inner wall angles are provided on the upper surface of the reaction table 11. In order to support the reaction tube 1131, a bottom bracket 113 with a semicircular arc cross section is installed on the inner wall of the receiving groove 112 through a pin. The reaction tube 1131 is fixedly installed on the inner wall of the bottom bracket 113, and the receiving groove 112 installs the bottom bracket 113. The obtuse shape of the receiving groove 112 allows the reaction tube 1131 to be deflected downward until the opening is tilted downward, so that the internal substance can be completely poured out.

[0053] In order to control the deflection of the base 113, an installation opening for installing the forward and reverse motor 114 is opened on the inner wall of the reaction table 11. In order to support the bidirectional screw 118, socket interfaces 115 are opened on the inner walls at both ends of the installation opening. The inner wall of the socket interface 115 is opened with a guide groove 116 that penetrates to the outer surface of the reaction table 11. The inner top wall of the guide groove 116 is opened with a transmission opening. The inner wall of the transmission opening is provided with a transmission gear 117 fixedly sleeved with the outer surface of the pin shaft. The installation opening is used to install the forward and reverse motor 114, and the rotation of the transmission gear 117 controls the base 113 to drive the reaction tube 1131 to deflect.

[0054] In order to control the two bases 113 at the same time, a bidirectional screw 118 is installed on the forward and reverse motor 114 through a reduction gear box. Furthermore, a rack 119 threadedly connected to the outer surface of the bidirectional screw 118 is installed on the inner wall of the guide groove 116. The rack 119 is engaged with the transmission gear 117 to control the angular deflection of the base 113. The guide groove 116 limits the rack 119, and the bidirectional screw 118 cooperates with the rack 119, so that the rack 119 moves in the guide groove 116 as the bidirectional screw 118 rotates, and then the base 113 rotates through the engagement of the transmission gear 117 with the rack 119.

[0055] By setting a reaction mechanism, when the reagent reacts with water or wastewater, the forward and reverse motor 114 drives the bidirectional screw 118 to rotate, and the guide chute 116 limits the rack 119, and the bidirectional screw 118 cooperates with the rack 119, so that the rack 119 moves in the guide chute 116 as the bidirectional screw 118 rotates, and then the bottom bracket 113 rotates through the meshing of the transmission gear 117 and the rack 119, driving the reaction tube 1131 to deflect the angle, thereby accelerating the reaction efficiency. After the reaction is completed, the bottom bracket 113 can also be controlled to rotate to pour the substance in the reaction tube 1131 into the liquid storage tank 7;

[0056] The liquid inlet dropper 105 drops the extracted liquid on the test paper of the comparison table 8. After a period of reaction, the acquisition camera 9 collects the reaction result color of the test paper, and the RGB value of the color on the test paper is extracted through the equipped color picker, and compared with the standard value to obtain the nitrite nitrogen content in the water and wastewater.

[0057] like Figure 2-Figure 3 and Figure 10-12 As shown, the cleaning mechanism is used to remove the test paper on the comparison table 8. The cleaning mechanism includes a collecting seat 12 with a J-shaped structure. In order to control the movement of the sealing curtain 122, a linkage slide groove 121 is provided on one end surface of the collecting seat 12 and penetrates to the other end surface of the collecting seat 12, and the sealing curtain 122 is slidably inserted into the inner wall of the linkage slide groove 121. In order to control the movement of the cleaning seat 124, a pushing hydraulic cylinder 123 is fixedly installed on the inner wall of the rear side of the detection box 1, and a cleaning seat 124 is provided on one side surface of the upper end of the collecting seat 12. The hydraulic rod of the pushing hydraulic cylinder 123 is fixedly connected to one side surface of the cleaning seat 124, and one end surface of the sealing curtain 122 is fixedly connected to one side surface of the cleaning seat 124. The pushing hydraulic cylinder 123 controls the cleaning seat 124 to move, and drives the sealing curtain 122 to move while the cleaning seat 124 moves, thereby controlling the opening and closing of the sealing curtain 122 at the front of the collecting seat 12.

[0058] In order to clean the test paper on the comparison table 8, a cleaning roller 125 is installed on the front inner wall of the cleaning seat 124 through a pin shaft. Furthermore, in order to facilitate the replacement of the wiping strip 127, a connecting strip 126 is fixedly connected to the lower surface of the cleaning seat 124, and the lower surface of the connecting strip 126 is connected to the wiping strip 127 through a mother-and-child sticker. When the cleaning seat 124 moves, the cleaning roller 125 contacts the surface of the comparison table 8, so that the cleaning roller 125 rotates, pushes the test paper into the collecting seat 12, and cleans the surface of the comparison table 8 through the wiping strip 127.

[0059] By setting up a cleaning mechanism, the hydraulic cylinder 123 is pushed to control the cleaning seat 124 to move forward, and the cleaning roller 125 is controlled to rotate, so as to push the test paper on the comparison table 8 forward. When the cleaning seat 124 moves, the sealing curtain 122 is controlled to move in the linkage slide groove 121. As the sealing curtain 122 moves, the front end of the collection seat 12 is opened, and the test paper is pushed into the collection seat 12 for collection. At the same time, the wiping strip 127 wipes the upper surface of the comparison table 8.

[0060] Working principle: When in use, firstly, water and waste water are discharged into the liquid inlet dropper 105 through the two main liquid inlets 106, and then the water and waste water are put into the reaction tube 1131 through the liquid inlet dropper 105, then pure water is introduced to clean the liquid inlet dropper 105, and then the reagent is discharged into the reaction tube 1131, and then pure water is introduced again to clean the pipeline and the liquid inlet dropper 105;

[0061] When the reagent reacts with water or wastewater, the bidirectional screw 118 is driven to rotate by the forward and reverse motor 114, and the rack 119 is limited by the guide slot 116, and the bidirectional screw 118 cooperates with the rack 119, so that the rack 119 moves in the guide slot 116 as the bidirectional screw 118 rotates, and then the bottom bracket 113 is rotated by the meshing of the transmission gear 117 and the rack 119, driving the reaction tube 1131 to deflect the angle, thereby accelerating the reaction efficiency. After the reaction is completed, the bottom bracket 113 can also be controlled to rotate to pour the substance in the reaction tube 1131 into the liquid storage tank 7;

[0062] The lifting hydraulic cylinder 111 drives the reaction table 11 to move upward, so that the reaction test tube 1131 is sleeved on the outside of the liquid inlet dropper 105, and the liquid inlet dropper 105 is controlled to extract the substance in the reaction test tube 1131. Then the lifting hydraulic cylinder 111 drives the reaction table 11 to descend, and the driving motor 102 controls the two threaded rods 101 to rotate through the belt transmission assembly, and controls the integrated block 10 to move on the threaded rods 101. When the integrated block 10 moves to the top of the comparison table 8, the driving motor 102 stops, and the liquid inlet dropper 105 drops the extracted liquid on the test paper of the comparison table 8. After a period of reaction, the collection camera 9 collects the reaction result color of the test paper, and the RGB value of the color on the test paper is extracted by the equipped color picker, and compared with the standard value to obtain the content of nitrite nitrogen in water and wastewater;

[0063] After the sampling is completed, the cleaning seat 124 is controlled to move forward by pushing the hydraulic cylinder 123, and the cleaning roller 125 is controlled to rotate to push the test paper on the comparison table 8 forward. When the cleaning seat 124 moves, the sealing curtain 122 is controlled to move in the linkage slide groove 121. As the sealing curtain 122 moves, the front end of the collecting seat 12 is opened, and the test paper is pushed into the collecting seat 12 for collection. At the same time, the wiping strip 127 wipes the upper surface of the comparison table 8.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for detecting nitrite nitrogen content in water and wastewater, comprising a detection box (1) with supporting legs fixedly connected to the lower surface, characterized in that: The front surface of the detection box (1) is provided with a processing window, the inner wall of the processing window is hingedly mounted with a sealing door (2) via a pin shaft, the bottom of the detection box (1) is provided with a liquid storage tank (7), a comparison table (8) is fixedly mounted on the inner wall of the detection box (1), a collection camera (9) is fixedly mounted on the inner wall of the detection box (1) directly above the comparison table (8), and the inner wall of the detection box (1) is respectively provided with a liquid inlet mechanism, a reaction mechanism and a cleaning mechanism; The liquid inlet mechanism adds water and wastewater, reagents and pure water into the reaction mechanism, the liquid inlet mechanism comprises an integrated block (10), and the inner wall of the detection box (1) is provided with two symmetrically arranged threaded rods (101) via bearings; The reaction mechanism is used to control the reaction tube (1131) to swing so as to accelerate the mixing of the reagent and the test object, and to facilitate pouring out the liquid in the reaction tube (1131). The reaction mechanism comprises a reaction table (11). The inner bottom wall of the detection box (1) is provided with a connection port for installing a lifting hydraulic cylinder (111). The top end of the hydraulic rod of the lifting hydraulic cylinder (111) is fixedly connected to the lower surface of the reaction table (11). The upper surface of the reaction table (11) is provided with two symmetrically arranged receiving grooves (112) with inner walls at an obtuse angle. The inner wall of the receiving groove (112) is provided with a bottom bracket (113) with a semicircular arc cross section via a pin shaft. The reaction tube (1131) is fixedly mounted on the inner wall of the bottom bracket (113). The inner wall of the reaction table (11) is provided with an installation opening for installing a forward and reverse motor (114), the inner walls at both ends of the installation opening are provided with sockets (115), the inner wall of the socket (115) is provided with a guide slot (116) penetrating to the outer surface of the reaction table (11), the inner top wall of the guide slot (116) is provided with a transmission opening, and the inner wall of the transmission opening is provided with a transmission gear (117) fixedly sleeved with the outer surface of the pin shaft; The forward and reverse motor (114) is equipped with a bidirectional screw (118) via a reduction gear box; the inner wall of the guide slot (116) is sleeved with a rack (119) threadedly connected to the outer surface of the bidirectional screw (118); the rack (119) is meshed with the transmission gear (117) to control the angle deflection of the base (113); The cleaning mechanism is used to remove the test paper on the comparison table (8), and comprises a collecting seat (12) with a J-shaped structure, one end surface of the collecting seat (12) is provided with a linkage slide groove (121) penetrating to the other end surface of the collecting seat (12), the inner wall of the linkage slide groove (121) is slidably connected with a sealing curtain (122), a pushing hydraulic cylinder (123) is fixedly installed on the inner wall of the rear side of the detection box (1), a cleaning seat (124) is provided on one side surface of the upper end of the collecting seat (12), a hydraulic rod of the pushing hydraulic cylinder (123) is fixedly connected to one side surface of the cleaning seat (124), and one end surface of the sealing curtain (122) is fixedly connected to one side surface of the cleaning seat (124).

2. A device for detecting nitrite nitrogen content in water and wastewater according to claim 1, characterized in that: Side ears (3) are fixedly connected to both side surfaces of the sealing door (2); a plug interface (4) is provided on the front side surface of the detection box (1); a rotation limit opening (5) is provided on the inner wall of one end of the plug interface (4); and a limit rod (6) is movably sleeved on the inner wall of the side ear (3) and is movably sleeved on the inner wall of the plug interface (4) and rotatably sleeved on the inner wall of the rotation limit opening (5).

3. A device for detecting nitrite nitrogen content in water and wastewater according to claim 1, characterized in that: A driving motor (102) is fixedly mounted on one end surface of the detection box (1), and a pulley (103) is fixedly sleeved on the outer surface of the main shaft of the driving motor (102) and on the outer surface of one end of the two threaded rods (101) extending outside the detection box (1), and the three pulleys (103) are connected to each other through a transmission belt.

4. A device for detecting nitrite nitrogen content in water and wastewater according to claim 1, characterized in that: The inner wall of the integrated block (10) is provided with two symmetrically arranged threaded openings, the outer surface of the threaded rod (101) is threadedly connected to the inner wall of the threaded opening, the inner walls at both ends of the threaded opening are fixedly connected to protective sleeves (104) sleeved on the outer surface of the threaded rod (101), and the free end of the protective sleeve (104) is fixedly connected to the inner wall of the detection box (1).

5. A device for detecting nitrite nitrogen content in water and wastewater according to claim 1, characterized in that: The inner wall of the integrated block (10) is sleeved with a liquid inlet dropper (105), and one side surface of the integrated block (10) is respectively provided with a main liquid inlet (106), a pure water liquid inlet (107) and a reagent liquid inlet (108). The inner walls of one end of the main liquid inlet (106), the pure water liquid inlet (107) and the reagent liquid inlet (108) are sleeved with a water inlet pipe, and the main liquid inlet (106) is symmetrically distributed and is respectively connected to the two The inner walls of the liquid inlet droppers (105) are interconnected, the inner wall of the pure water inlet (107) is in a T-shaped structure, and the two outlet ends are respectively interconnected with the inner walls of the two main liquid inlets (106), the reagent inlet (108) is interconnected with the middle inner wall of the pure water inlet (107), and the inner walls of the two water outlet ends of the pure water inlet (107) and the inner wall of the reagent inlet (108) are both provided with one-way valves.

6. A device for detecting nitrite nitrogen content in water and wastewater according to claim 5, characterized in that: A cleaning roller (125) is mounted on the front inner wall of the cleaning seat (124) via a pin shaft, a connecting strip (126) is fixedly connected to the lower surface of the cleaning seat (124), and a wiping strip (127) is connected to the lower surface of the connecting strip (126) via a mother-and-child adhesive tape.

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