A device for detecting nitrite nitrogen content in water

Abstract

This utility model discloses a device for detecting nitrite nitrogen content in water, relating to the field of nitrite nitrogen detection technology. It includes a base plate, a support frame fixedly connected to the top of the base plate, a water storage tank fixedly connected to the top of the support frame, a motor fixedly connected to the side of the support frame, and a bearing fixedly connected to the top of the water storage tank. A filter screen is fixedly connected inside the bearing and rotatably connected to the water storage tank via the bearing. The filter screen is funnel-shaped and located inside the water storage tank. This utility model involves removing the sealing cap, injecting the solution to be tested into the filter screen through the feed pipe, then replacing the sealing cap, and starting the motor. The motor drives a drive shaft to rotate via pulleys and belts, which in turn drives the filter screen to rotate. Through the rotation of the filter screen, water is thrown out due to centrifugal force and flows into the water storage tank, while solid impurities remain inside the filter screen, thus quickly separating impurities from the water.

Description

Technical Field

[0001] This utility model relates to the field of nitrite nitrogen detection technology, specifically to a device for detecting nitrite nitrogen content in water. Background Technology

[0002] Nitrite nitrogen in water is a key indicator for assessing water quality safety. Excessive nitrite levels can harm the ecological environment and human health. Solution-based detection is a common method for detecting nitrite nitrogen in water, based on the colorimetric reaction of nitrite with specific reagents, calculating the content by measuring the absorbance of the solution. However, this method is susceptible to interference from impurities in the water: suspended impurities cause turbidity, affecting light transmittance; metal ions, humic substances, etc., react with reagents, altering the color intensity or hue; high concentrations of organic matter may also consume the reaction reagents, leading to incomplete color development. These problems are particularly prominent in water samples with high levels of impurities, directly causing absorbance measurement deviations and reducing detection accuracy. Therefore, targeted optimization of the device is necessary to eliminate interference.

[0003] Patent publication number CN208297286U discloses an aluminum content detection device in water, including a base plate, a fixed frame fixedly connected to the top of the base plate, a second fixed clamp fixedly connected to the upper end of the left side of the inner surface of the fixed frame, a straw and a box body fixedly connected from left to right in the second fixed clamp, a weight sensor embedded in the right side of the bottom of the straw and the inner cavity of the box body, and the top of the box body penetrates the top of the inner surface of the fixed frame and extends to the upper end of the top of the fixed frame.

[0004] To address the issue that manual mixing of solutions during testing leads to significant errors in the mixing ratio and consequently, large inaccuracies in the test results, existing technology employs weight sensors embedded in both the pipette and the right side of the bottom of the chamber. These sensors detect the weight of the water in the pipette and the weight of the reaction reagent inside the chamber, allowing for precise control of the water-to-reagent ratio. However, this method still suffers from the problem of impurities in the water affecting the test results, ultimately leading to inaccurate measurements. Utility Model Content

[0005] The purpose of this invention is to provide a device for detecting nitrite nitrogen content in water, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] The device includes a base plate, a support frame fixedly connected to the top of the base plate, a water storage tank fixedly connected to the top of the support frame, a motor fixedly connected to the side of the support frame, a bearing fixedly connected to the top of the water storage tank, a filter screen fixedly connected inside the bearing, the filter screen and the water storage tank being rotatably connected via the bearing, the filter screen being funnel-shaped and located inside the water storage tank, a drive shaft fixedly connected to the bottom of the filter screen, the drive shaft being rotatably connected to the bottom of the water storage tank, the drive shaft penetrating the base plate of the water storage tank and extending into the support frame, a pulley fixedly connected to the output end of the motor and the bottom of the drive shaft, a belt movably connected to the surface of the pulley, two pulleys being connected via belt drive, and a connecting hose fixedly connected to the bottom of the outer wall of the water storage tank.

[0008] It also includes a sealing mechanism, a secondary filtration mechanism, a colorimetric mechanism, and a rapid quantitative extraction mechanism;

[0009] The sealing mechanism is used to prevent the sample from being ejected during filtration;

[0010] The secondary filtration mechanism is used to perform secondary rapid filtration of the sample;

[0011] The colorimetric mechanism is used to perform colorimetric analysis on the tested samples;

[0012] The rapid quantitative extraction mechanism is used for quantitative sampling of samples.

[0013] A further improvement of the present invention is that the sealing mechanism includes a top cover, which is threadedly connected to the top of the water storage tank, and a feed pipe is fixedly connected to the middle of the top cover, with a sealing cap inserted into the top of the feed pipe.

[0014] A further improvement of this utility model's technical solution is that: the secondary filtration mechanism includes a base and a water collection tank. The base is fixedly connected to the top of the base plate, and a collection bucket is inserted inside the base. A sleeve is threadedly connected to the top of the collection bucket. The top of the water collection tank is fixedly connected to the end of the connecting hose away from the water storage tank. The water collection tank is fixedly connected to the top of the sleeve. A one-way filter screen is threadedly connected to the bottom of the water collection tank. A piston rod is inserted inside the one-way filter screen. A limiting frame is fixedly connected inside the water collection tank. A circular through hole is opened in the middle of the limiting frame, and the piston rod is inserted inside the limiting frame.

[0015] A further improvement of the present invention is that the colorimetric mechanism includes a back plate, which is fixedly connected to the top of the base plate. LED beads are fixedly connected inside the back plate. The LED beads are arranged in a linear array on the front side of the back plate. A light-diffusing plate is fixedly connected to the front side of the LED beads. The light-diffusing plate is white.

[0016] A further improvement of this utility model is that a test tube rack is fixedly connected to the front side of the light-diffusing plate, and a round hole is opened inside the test tube rack, into which a test tube is inserted.

[0017] A further improvement of this utility model is that the rapid quantitative extraction mechanism includes an extraction bucket, which is inserted into the round hole of the test tube rack. The extraction bucket has a double-layer structure, with a spring fixedly connected inside the interlayer of the extraction bucket. An extraction port is fixedly connected to the bottom of the extraction bucket, and a handle is fixedly connected to the outside of the extraction bucket. A piston rod is slidably connected inside the extraction bucket, and a sleeve is fixedly connected to the top of the piston rod. The bottom of the sleeve is fixedly connected to the top of the spring, and scale lines are provided on the surface of the sleeve.

[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0019] 1. This utility model provides a device for detecting nitrite nitrogen content in water. It employs a base plate, support frame, water storage tank, motor, pulleys, belt, drive shaft, filter screen, bearing, connecting hose, feed pipe, top cover, sealing cover, base, collection bucket, sleeve, water collection tank, one-way filter screen, piston rod, and limiting frame. By removing the sealing cover, the solution to be tested is injected into the filter screen through the feed pipe. Then, the sealing cover is replaced, and the motor is started. The motor drives the drive shaft to rotate via the pulleys and belt, which in turn drives the filter screen to rotate. Through the rotation of the filter screen, water is thrown out due to centrifugal force. The water then flows into the storage tank, while solid impurities remain inside the filter screen, thus quickly separating impurities from the water. After filtration, the top cover can be opened to clean the filter screen and prevent internal blockage. The filtered water flows into the collection tank through the connecting hose. Pressing the piston rod back and forth accelerates the water flow through the one-way filter screen, thereby accelerating secondary filtration of the water to remove small particulate matter and prevent impurities in the water from affecting the measurement results of nitrite nitrogen. After filtration, the collection bucket can be removed by pulling it out and then rotating it. The one-way filter screen can be removed to clean the impurities inside.

[0020] 2. This utility model provides a device for detecting nitrite nitrogen content in water. It employs a back plate, LED beads, a light-diffusing plate, a test tube rack, test tubes, an extraction bucket, an extraction port, a spring, a handle, a piston rod, a sleeve, and a scale. By pressing the sleeve, the sleeve moves the piston rod downwards, compressing the spring. When the appropriate scale is reached, the rapid quantitative extraction mechanism is placed inside the solution to be extracted. Releasing the sleeve causes the spring to rebound, lifting the piston rod to complete the automatic extraction. Pressing the sleeve then injects the extracted solution into the test tube. Next, the detection liquid is injected into the colorimetric mechanism. Turning on the LED beads allows the solution inside the test tube to be compared with a colorimetric card or standard solution to obtain the detection result. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the water nitrite nitrogen content detection device of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the support frame and water storage tank of this utility model;

[0023] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the colorimetric mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram of the rapid quantitative extraction mechanism of this utility model.

[0026] In the diagram: 3. Sealing mechanism; 4. Secondary filtration mechanism; 5. Colorimetric mechanism; 6. Rapid quantitative extraction mechanism; 11. Base plate; 21. Support frame; 22. Water storage tank; 23. Motor; 24. Pulley; 25. Belt; 26. Drive shaft; 27. Filter screen; 28. Bearing; 29. ​​Connecting hose; 31. Feed pipe; 32. Top cover; 33. Sealing cover; 41. Base; 42. Collection bucket; 43. Sleeve; 44. Water collection tank; 45. One-way filter screen; 46. Piston rod; 47. Limiting frame; 51. Back plate; 52. LED bead; 53. Light dome plate; 54. Test tube rack; 55. Test tube; 61. Extraction bucket; 62. Extraction port; 63. Spring; 64. Handle; 65. Piston push rod; 66. Sleeve; 67. Scale line. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to embodiments:

[0028] Example 1

[0029] like Figure 1-5As shown, this utility model provides a device for detecting nitrite nitrogen content in water, including a base plate 11, a support frame 21 fixedly connected to the top of the base plate 11, a water storage tank 22 fixedly connected to the top of the support frame 21, a motor 23 fixedly connected to the side of the support frame 21, a bearing 28 fixedly connected to the top of the water storage tank 22, a filter screen 27 fixedly connected inside the bearing 28, the filter screen 27 and the water storage tank 22 being rotatably connected via the bearing 28, the filter screen 27 being funnel-shaped and disposed inside the water storage tank 22, and a drive shaft 26 fixedly connected to the bottom of the filter screen 27, the drive shaft 26 being rotatably connected to the bottom of the water storage tank 22. The bottom plate of the water storage tank 22 extends into the interior of the support frame 21. The output end of the motor 23 is fixedly connected to the bottom of the transmission shaft 26 with a pulley 24. A belt 25 is movably connected to the surface of the pulley 24, and the two pulleys 24 are connected by the belt 25. A connecting hose 29 is fixedly connected to the bottom of the outer wall of the water storage tank 22. The system also includes a sealing mechanism 3, a secondary filtration mechanism 4, a colorimetric mechanism 5, and a rapid quantitative extraction mechanism 6. The sealing mechanism 3 is used to prevent the sample from being thrown out during filtration. The secondary filtration mechanism 4 is used to perform secondary rapid filtration of the sample. The colorimetric mechanism 5 is used to perform colorimetric analysis on the sample after testing. The rapid quantitative extraction mechanism 6 is used to perform quantitative sampling of the sample. The sealing mechanism 3 includes a top cover 32, which is threaded to the top of the water storage tank 22. A feed pipe 31 is fixedly connected to the middle of the top cover 32, and a sealing cap 33 is inserted into the top of the feed pipe 31. The secondary filtration mechanism 4 includes a base 41 and a water collection tank 44. The base 41 is fixedly connected to the top of the base plate 11. A collection bucket 42 is inserted into the inside of the base 41. A sleeve 43 is threadedly connected to the top of the collection bucket 42. The top of the water collection tank 44 is fixedly connected to the end of the connecting hose 29 away from the water storage tank 22. The water collection tank 44 is fixedly connected to the top of the sleeve 43. A one-way filter screen 45 is threadedly connected to the bottom of the water collection tank 44. A piston rod 46 is inserted into the inside of the one-way filter screen 45. A limit frame 47 is fixedly connected inside the water collection tank 44. A circular through hole is opened in the middle of the limit frame 47. The piston rod 46 is inserted into the inside of the limit frame 47.

[0030] In this embodiment, the sealing cap 33 is removed, and the solution to be tested is injected into the filter screen 27 through the feed pipe 31. Then, the sealing cap 33 is replaced, and the motor 23 is started. The motor 23 drives the drive shaft 26 to rotate through the pulley 24 and belt 25. The drive shaft 26 then drives the filter screen 27 to rotate. Due to the rotation of the filter screen 27, water is thrown out by centrifugal force and flows into the water storage tank 22. Solid impurities remain inside the filter screen 27, thereby quickly separating impurities from the water. After filtration is completed, the filter screen is opened. The top cover 32 can be used to clean the filter screen 27 to prevent internal blockage. The filtered water flows into the water collection tank 44 through the connecting hose 29. Pressing the piston rod 46 back and forth can accelerate the water flow through the one-way filter screen 45, thereby accelerating the secondary filtration of the water to remove small particulate matter and prevent impurities in the water from affecting the measurement results of nitrite nitrogen. After filtration, the collection bucket 42 can be removed by pulling it out and then rotating it. The one-way filter screen 45 can be removed to clean the impurities inside.

[0031] Example 2

[0032] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the colorimetric mechanism 5 includes a back plate 51, which is fixedly connected to the top of the base plate 11. LED beads 52 are fixedly connected inside the back plate 51, and the LED beads 52 are arranged in a linear array on the front side of the back plate 51. A light-diffusing plate 53, which is white, is fixedly connected to the front side of the light-diffusing plate 53. A test tube rack 54 is fixedly connected to the front side of the light-diffusing plate 53. A circular hole is opened inside the test tube rack 54, and a test tube 55 is inserted into the circular hole of the test tube rack 54. The rapid quantitative extraction mechanism 6 includes an extraction container 61, which is inserted into the round hole of the test tube rack 54. The extraction container 61 has a double-layer structure, with a spring 63 fixedly connected inside the interlayer. An extraction port 62 is fixedly connected to the bottom of the extraction container 61, and a handle 64 is fixedly connected to the outside of the extraction container 61. A piston rod 65 is slidably connected inside the extraction container 61, and a sleeve 66 is fixedly connected to the top of the piston rod 65. The bottom of the sleeve 66 is fixedly connected to the top of the spring 63, and graduation lines 67 are provided on the surface of the sleeve 66.

[0033] In this embodiment, by pressing the sleeve 66, the sleeve 66 drives the piston push rod 65 to move downward, and the spring 63 is compressed. Then, when the scale line 67 is checked and the appropriate scale is reached, the rapid quantitative extraction mechanism 6 is placed into the solution to be extracted. Then, the sleeve 66 is released, and the spring 63 rebounds, driving the piston push rod 65 to rise, thus completing the automatic extraction. Then, the sleeve 66 is pressed to inject the extracted solution into the test tube 55. Then, the detection liquid is injected into the colorimetric mechanism 5. The lamp bead 52 is turned on to compare the solution inside the test tube 55 with the colorimetric card or standard solution to obtain the detection result.

[0034] The working principle of the nitrite nitrogen content detection device in the water will be explained in detail below.

[0035] like Figure 1-5 As shown, by removing the sealing cap 33, the solution to be tested is injected into the filter screen 27 through the feed pipe 31. Then, the sealing cap 33 is replaced, and the motor 23 is started. The motor 23 drives the drive shaft 26 to rotate through the pulley 24 and belt 25. The drive shaft 26 then drives the filter screen 27 to rotate. Due to the rotation of the filter screen 27, the water is thrown out by centrifugal force and flows into the water storage tank 22. Solid impurities remain inside the filter screen 27, thus quickly separating the impurities in the water. After filtration, the top cover 32 can be opened to clean the filter screen 27 to prevent internal blockage. The filtered water flows into the water collection tank 44 through the connecting hose 29. Pressing the piston rod 46 back and forth can accelerate the water flow through the one-way filter screen 45, thereby accelerating the secondary filtration of the water to remove impurities. Small particulate matter is filtered out to prevent impurities in the water from affecting the measurement results of nitrite nitrogen. After filtration, the collection bucket 42 can be removed by pulling it out and then rotating it. The one-way filter screen 45 can be removed to clean the impurities inside. By pressing the sleeve 66, the sleeve 66 moves the piston push rod 65 downward, and the spring 63 is compressed. Then, check the scale line 67. When the appropriate scale is reached, put the rapid quantitative extraction mechanism 6 into the solution to be extracted. Then, release the sleeve 66. The spring 63 rebounds and drives the piston push rod 65 to rise, thus completing the automatic extraction. Then, press the sleeve 66 to inject the extracted solution into the test tube 55. Then, inject the test solution into the colorimetric mechanism 5. Turn on the lamp 52 to compare the solution inside the test tube 55 with the colorimetric card or standard solution to obtain the test result.

[0036] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A device for detecting nitrite nitrogen content in water, comprising a base plate (11), characterized in that: A support frame (21) is fixedly connected to the top of the base plate (11), a water storage tank (22) is fixedly connected to the top of the support frame (21), a motor (23) is fixedly connected to the side of the support frame (21), a bearing (28) is fixedly connected to the top of the water storage tank (22), a filter screen (27) is fixedly connected inside the bearing (28), the filter screen (27) and the water storage tank (22) are rotatably connected through the bearing (28), the filter screen (27) is funnel-shaped, and the filter screen (27) is set inside the water storage tank (22). A drive shaft (26) is fixedly connected to the bottom of the filter screen (27). The drive shaft (26) is rotatably connected to the bottom of the water storage tank (22). The drive shaft (26) passes through the bottom plate of the water storage tank (22) and extends into the interior of the support frame (21). A pulley (24) is fixedly connected to the bottom of the drive shaft (26) at the output end of the motor (23). A belt (25) is movably connected to the surface of the pulley (24). The two pulleys (24) are connected by the belt (25). A connecting hose (29) is fixedly connected to the bottom of the outer wall of the water storage tank (22). It also includes a sealing mechanism (3), a secondary filtration mechanism (4), a colorimetric mechanism (5), and a rapid quantitative extraction mechanism (6); The sealing mechanism (3) is used to prevent the sample from being ejected during filtration; The secondary filtration mechanism (4) is used to perform secondary rapid filtration on the sample; The colorimetric mechanism (5) is used to perform colorimetric analysis on the tested samples; The rapid quantitative extraction mechanism (6) is used to quantitatively extract samples.

2. The device for detecting nitrite nitrogen content in water according to claim 1, characterized in that: The sealing mechanism (3) includes a top cover (32), which is threaded to the top of the water storage tank (22). A feed pipe (31) is fixedly connected to the middle of the top cover (32), and a sealing cap (33) is inserted into the top of the feed pipe (31).

3. The device for detecting nitrite nitrogen content in water according to claim 1, characterized in that: The secondary filtration mechanism (4) includes a base (41) and a water collection tank (44). The base (41) is fixedly connected to the top of the base plate (11). A collection bucket (42) is inserted inside the base (41). A sleeve (43) is threadedly connected to the top of the collection bucket (42). The top of the water collection tank (44) is fixedly connected to the end of the connecting hose (29) away from the water storage tank (22). The water collection tank (44) is fixedly connected to the top of the sleeve (43). A one-way filter screen (45) is threadedly connected to the bottom of the water collection tank (44). A piston rod (46) is inserted inside the one-way filter screen (45). A limit frame (47) is fixedly connected inside the water collection tank (44). A circular through hole is opened in the middle of the limit frame (47). The piston rod (46) is inserted inside the limit frame (47).

4. The device for detecting nitrite nitrogen content in water according to claim 1, characterized in that: The colorimetric mechanism (5) includes a back plate (51), which is fixedly connected to the top of the base plate (11). Inside the back plate (51), there are LED beads (52). The LED beads (52) are arranged in a linear array on the front of the back plate (51). A light-diffusing plate (53) is fixedly connected to the front of the LED beads (52). The light-diffusing plate (53) is white.

5. The device for detecting nitrite nitrogen content in water according to claim 4, characterized in that: A test tube rack (54) is fixedly connected to the front side of the light-diffusing plate (53). A round hole is opened inside the test tube rack (54), and a test tube (55) is inserted into the round hole of the test tube rack (54).

6. The device for detecting nitrite nitrogen content in water according to claim 5, characterized in that: The rapid quantitative extraction mechanism (6) includes an extraction bucket (61), which is inserted into the round hole of the test tube rack (54). The extraction bucket (61) has a double-layer structure. A spring (63) is fixedly connected inside the interlayer of the extraction bucket (61). An extraction port (62) is fixedly connected to the bottom of the extraction bucket (61). A handle (64) is fixedly connected to the outside of the extraction bucket (61). A piston push rod (65) is slidably connected inside the extraction bucket (61). A sleeve (66) is fixedly connected to the top of the piston push rod (65). The bottom of the sleeve (66) is fixedly connected to the top of the spring (63). A scale line (67) is provided on the surface of the sleeve (66).

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