Device for rapidly and continuously detecting ammonia nitrogen

Abstract

The utility model discloses a device for rapidly and continuously detecting ammonia nitrogen, which comprises a desilting tank base, a measuring tank fixing seat, a sealing plug, an ammonia gas sensitive electrode and a pH electrode, the lower end of the measuring tank fixing seat is connected with the desilting tank base, and the upper end of the measuring tank fixing seat is connected with the sealing plug; a desilting tank is arranged in the desilting tank base, a water inlet is formed in the bottom of one side of the desilting tank, and the water inlet is communicated with the exterior of the desilting tank; a measuring groove is formed in the measuring groove fixing base, and a through opening is formed in the bottom of the measuring groove and communicated with the sand settling groove. One ends of the ammonia gas sensitive electrode and the pH electrode are mounted at the top of the sealing plug, and the other ends of the ammonia gas sensitive electrode and the pH electrode extend into the measuring tank; the top of the sealing plug is also provided with an air port communicated with the measuring groove, and the air port is respectively connected with an air valve and a blowoff valve outside the device. The device can adapt to a complex water quality environment, and meanwhile, the ammonia nitrogen content in water can be rapidly and continuously measured.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality detection, in particular to a device for rapidly and continuously detecting ammonia nitrogen. Background Art

[0002] The ammonia nitrogen content in water refers to the amount of free ammonia (NH3) or ammonium ions (NH4 + Ammonia nitrogen is a key indicator for determining and controlling eutrophication in water bodies. Therefore, ammonia nitrogen testing is necessary for aquaculture to prevent eutrophication, which can harm fish and other aquatic life.

[0003] Currently, there are various methods for testing ammonia nitrogen content, and different methods are applicable to different water qualities. The main method is to test ammonia nitrogen content in water using an ammonia nitrogen detector. However, these methods generally have high water quality requirements and are not applicable to a variety of complex water quality environments. Furthermore, when testing water samples outdoors, it is extremely inconvenient to be unable to carry the detector and water samples with you. Utility Model Content

[0004] The purpose of this utility model is to provide a device for rapid and continuous detection of ammonia nitrogen, so as to adapt to complex water quality environments and realize rapid and continuous measurement of ammonia nitrogen content in water. To achieve the above purpose, this utility model adopts the following technical solutions:

[0005] The utility model discloses a device for rapid and continuous detection of ammonia nitrogen, comprising: a grit chamber base, a measuring chamber fixing seat, a sealing plug, an ammonia gas sensitive electrode, and a pH electrode. The lower end of the measuring chamber fixing seat is connected to the grit chamber base, and the upper end is connected to the sealing plug.

[0006] A sand settling trough is provided inside the sand settling trough base, and a water inlet is provided at the bottom of one side of the sand settling trough, and the water inlet is communicated with the outside of the sand settling trough base.

[0007] A measuring slot is provided inside the measuring slot fixing seat, and a through opening is provided at the bottom of the measuring slot, and the through opening is communicated with the sand settling slot.

[0008] One end of the ammonia sensitive electrode and the pH electrode is installed on the top of the sealing plug, and the other end extends into the measuring tank; and the top of the sealing plug is also provided with an air port communicating with the measuring tank, and the air port is respectively connected to the air valve and the exhaust valve outside the device.

[0009] Furthermore, a vertically penetrating sand trough level gauge installation groove is provided on at least one side of the sand trough base, the measuring trough fixing seat and the sealing plug, one end of the sand trough level gauge installation groove is connected to the sand trough, and the other end is connected to the outside through the top of the sealing plug.

[0010] Among them, the sedimentation tank level gauge installation slot is installed with a sedimentation tank level gauge, and the height of one end of the sedimentation tank level gauge installation slot communicating with the sedimentation tank is set according to the sample injection volume of the device.

[0011] Furthermore, a measuring tank level gauge installation port is provided on the top of the sealing plug, and the measuring tank level gauge installation port is communicated with the measuring tank.

[0012] Wherein, a measuring tank level gauge is installed at the measuring tank level gauge installation port, and the length of the measuring tank level gauge is set according to the measurement amount of the device.

[0013] Furthermore, a reagent adding port communicating with the measuring tank is provided on the top of the sealing plug, and the measuring tank is connected to a reagent pump outside the device through the reagent adding port to add a drug that reacts with the sample during testing.

[0014] Furthermore, a standard liquid injection port communicating with the measuring tank is provided on the top of the sealing plug, and the measuring tank is connected to a standard liquid pump outside the device through the standard liquid injection port to calibrate the device.

[0015] Furthermore, a stirring motor is installed on the top of the sealing plug, and the stirring blades of the stirring motor extend into the measuring tank.

[0016] Furthermore, the measuring tank fixing seat is provided with a plurality of first annular grooves on the outer surface of the end portion connected to the sand settling tank base, and an O-ring is installed on the first annular groove.

[0017] A plurality of second annular grooves are provided on the outer surfaces of both ends of the sealing plug, and an O-ring is also installed on the second annular groove at the end of the sealing plug connected to the measuring tank fixing seat.

[0018] Preferably, an airtightness test port communicating with the measuring tank is provided on the top of the sealing plug to test the airtightness of the device.

[0019] After adopting the above technical solution, the utility model has the following effects:

[0020] 1. The utility model integrates the pre-treatment and measurement processes, has a relatively simple running method and operation method, and can realize the rapid and continuous measurement of the ammonia nitrogen content in water quality.

[0021] 2. The utility model has a sand settling effect and a high waterproof grade. It can be used to measure the ammonia nitrogen content in water quality environments in various regions such as rivers and lakes, and can be used to detect the ammonia nitrogen content in the treatment process of sewage treatment plants.

[0022] 3. The utility model has a simple overall structure, small size, light weight and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0024] Figure 2 It is a top view of the utility model.

[0025] Figure 3 for Figure 2 AA section view.

[0026] Figure 4 This is a connection circuit diagram when the utility model is applied.

[0027] Main component symbols:

[0028] 1: Sedimentation tank base, 11: Sedimentation tank, 12: Water inlet, 13: Sedimentation tank level gauge installation slot, 2: Measuring tank fixing seat, 21: Measuring tank, 22: Through port, 23: First annular groove, 3: Sealing plug, 31: Measuring tank level gauge installation port, 32: Air port, 33: Reagent dosing port, 34: Standard solution injection port, 35: Air tightness test port, 36: Second annular groove, 4: Ammonia sensitive electrode, 5: pH electrode, 6: Stirring motor, 7: Sedimentation tank level gauge, 8: Measuring tank level gauge. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 3 As shown, the utility model discloses a device for rapid and continuous detection of ammonia nitrogen, comprising: a sedimentation tank base 1, a measuring tank fixing seat 2, a sealing plug 3, an ammonia sensitive electrode 4, and a pH electrode 5. The lower end of the measuring tank fixing seat 2 is connected to the sedimentation tank base 1, and the upper end is connected to the sealing plug 3.

[0031] A sand trough 11 is provided inside the sand trough base 1, and a water inlet 12 is provided at the bottom of one side of the sand trough 11, which communicates with the outside of the sand trough base 1. In this embodiment, the water inlet 12 has a certain slope to facilitate the entry of water samples into the device.

[0032] A measuring slot 21 is provided inside the measuring slot fixing base 2 . A through opening 22 is provided at the bottom of the measuring slot 21 . The measuring slot 21 communicates with the sand settling tank 11 through the through opening 22 .

[0033] One end of the ammonia sensitive electrode 4 and the pH electrode 5 are installed on the top of the sealing plug 3, and the other end extends into the measuring groove 21; and the top of the sealing plug 3 is also provided with an air port 32 connected to the measuring groove 21, and the air port 32 is respectively connected to the air valve and the exhaust valve outside the device to control the sampling of the device and the discharge of the remaining sample through pressure changes.

[0034] Secondly, vertically penetrating sand trough level gauge installation grooves 13 are provided on the left and right sides of the sand trough base 1, the measuring trough fixing seat 2 and the sealing plug 3. One end of the sand trough level gauge installation groove 13 is connected to the sand trough 11, and the other end is connected to the outside through the top of the sealing plug 3.

[0035] A measuring tank level gauge installation port 31 is provided on the top of the sealing plug 3 , and the measuring tank level gauge installation port 31 is communicated with the measuring tank 21 .

[0036] In this embodiment, the grit tank level gauge 7 is vertically mounted in the grit tank level gauge mounting slot 13 through the top of the sealing plug 3. The height of the end of the grit tank level gauge mounting slot 13 that communicates with the grit tank 11 is set according to the device's sample volume. Furthermore, one end of the measuring tank level gauge 8 is fixed to the measuring tank level gauge mounting opening 31, while the other end extends into the measuring tank 21. The length of the measuring tank level gauge 8 is set according to the device's measurement volume.

[0037] Secondly, in this embodiment, the top of the sealing plug 3 is provided with a reagent addition port 33 and a standard solution injection port 34, which communicate with the measuring tank 21. The measuring tank 21 is connected to an external reagent pump via the reagent addition port 33 for adding reagents that react with the sample during testing; the standard solution injection port 34 is connected to an external standard solution pump for calibration. Furthermore, a stirring motor 6 is mounted on the top of the sealing plug 3, and its stirring blades (not shown) extend into the measuring tank 21.

[0038] In addition, the measuring tank holder 2 is provided with a plurality of first annular grooves 23 on the outer surface of the end connected to the sedimentation tank base 1. O-rings (not shown) are installed in these first annular grooves 23. Simultaneously, the outer surfaces of both ends of the sealing plug are provided with a plurality of second annular grooves 36. Furthermore, the sealing plug 3 is also installed with an O-ring (not shown) in the second annular groove 36 at the end connected to the measuring tank holder 2, thereby achieving a sealed device.

[0039] In this embodiment, an airtightness test port 35 communicating with the measuring slot 21 is provided on the top of the sealing plug 3 to test the airtightness of the device.

[0040] Combine Figure 4 As shown in the figure, the measurement process of this device is:

[0041] 1. Sampling: Place the device under the water sample, open the air valve and diaphragm pump, and exhaust the air inside the device so that the water sample outside the device is pressed into the sand settling tank 11 through the water inlet 12 by atmospheric pressure.

[0042] 2. Sand settling: After the sand settling tank level gauge 7 detects that the water sample to be tested has reached the liquid level, close the air valve and diaphragm pump to balance the air pressure inside the device, stop sampling, and start sand settling.

[0043] 3. Sampling: Open the air valve and diaphragm pump to continue sampling the water sample outside the device, and push the clear liquid after sedimentation into the measuring tank 21. After the measuring tank level meter 8 detects that the clear liquid in the water sample to be tested reaches the liquid level, close the air valve and diaphragm pump to complete the sampling.

[0044] 4. Adding medicine: Pump the reagent into the measuring tank through the reagent pump outside the device, turn on the stirring motor 6, mix the liquid to be tested with the reagent, and then the ammonia sensitive electrode 4 starts measuring and converts it into an electrical signal, which is converted into an ammonia nitrogen concentration value through the calibration curve stored inside it.

[0045] 5. Emptying: Open the drain valve and diaphragm pump, add air to the measuring tank 21 and the sedimentation tank 11, and drain the remaining liquid. After complete emptying, close the drain valve and diaphragm pump to fill the measuring tank 21 and the sedimentation tank 11 with air and wait for the next measurement and analysis.

[0046] Combine Figure 4 , the calibration process of this device is:

[0047] 1. Sampling: Place the device under the water sample, open the air valve and diaphragm pump, and exhaust the air inside the device so that the water sample outside the device is pressed into the sand settling tank 11 through the water inlet 12 by atmospheric pressure.

[0048] 2. Sand settling: After the sand settling tank level gauge 7 detects that the water sample to be tested has reached the liquid level, close the air valve and diaphragm pump to balance the air pressure inside the device, stop sampling, and start sand settling.

[0049] 3. Sampling: Open the air valve and diaphragm pump to continue sampling the water sample outside the device, and push the clear liquid after sedimentation into the measuring tank 21. After the measuring tank level meter 8 detects that the clear liquid in the water sample to be tested reaches the liquid level, close the air valve and diaphragm pump to complete the sampling.

[0050] 4. Adding reagent: Pump the reagent into the measuring tank 21 through the reagent pump outside the device, turn on the stirring motor 6 to mix the liquid to be tested with the reagent, and then the ammonia sensitive electrode 4 starts measuring. The electrical signal of the ammonia sensitive electrode 4 at this time is collected as mv1.

[0051] 5. Add low standard: Turn on the standard solution pump, add the ammonia nitrogen mother solution into 1 / 10 of the measuring tank 21, continue to mix by the stirring motor 6, and then the ammonia sensitive electrode 4 starts measuring. The electrical signal of the ammonia sensitive electrode 4 at this time is collected as mv2.

[0052] 6. Add high standard: Turn on the standard solution pump, add the ammonia nitrogen mother solution into 9 / 10 of the measuring tank 21, continue to mix by the stirring motor 6, and then the ammonia sensitive electrode 4 starts measuring. The electrical signal of the ammonia sensitive electrode 4 at this time is collected as mv3.

[0053] 7. Emptying: Open the drain valve and diaphragm pump, add air to the measuring tank 21 and the sedimentation tank 11, and drain the remaining liquid. After complete emptying, close the drain valve and diaphragm pump to fill the measuring tank 21 and the sedimentation tank 11 with air and wait for the next measurement and analysis.

[0054] The above description is only a preferred embodiment of the present invention. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A device for rapid and continuous detection of ammonia nitrogen, characterized in that: include: A sedimentation tank base (1), a measuring tank fixing seat (2), a sealing plug (3), an ammonia sensitive electrode (4), and a pH electrode (5), wherein the lower end of the measuring tank fixing seat (2) is connected to the sedimentation tank base (1), and the upper end is connected to the sealing plug (3); A sand settling trough (11) is provided inside the sand settling trough base (1), and a water inlet (12) is provided at the bottom of one side of the sand settling trough (11), and the water inlet (12) is communicated with the outside of the sand settling trough base (1); A measuring groove (21) is provided inside the measuring groove fixing seat (2), a through opening (22) is provided at the bottom of the measuring groove (21), and the through opening (22) is communicated with the sedimentation groove (11); One end of the ammonia gas-sensitive electrode (4) and the pH electrode (5) are mounted on the top of the sealing plug (3), and the other end extends into the measuring tank (21); and an air port (32) communicating with the measuring tank (21) is also provided on the top of the sealing plug (3), and the air port (32) is respectively connected to an air valve and an exhaust valve outside the device.

2. The device for rapid and continuous detection of ammonia nitrogen according to claim 1, wherein: A vertically penetrating sedimentation tank level gauge installation groove (13) is provided on at least one side of the sedimentation tank base (1), the measuring tank fixing seat (2) and the sealing plug (3); one end of the sedimentation tank level gauge installation groove (13) is communicated with the sedimentation tank (11), and the other end is communicated with the outside through the top of the sealing plug (3).

3. A device for rapid and continuous detection of ammonia nitrogen as claimed in claim 2, characterized in that: The grit tank level gauge installation slot (13) is installed with a grit tank level gauge (7), and the height of one end of the grit tank level gauge installation slot (13) communicating with the grit tank (11) is set according to the sample injection volume of the device.

4. The device for rapid and continuous detection of ammonia nitrogen according to claim 1, wherein: A measuring tank level gauge installation opening (31) is provided on the top of the sealing plug (3), and the measuring tank level gauge installation opening (31) is communicated with the measuring tank (21).

5. The device for rapid and continuous detection of ammonia nitrogen according to claim 4, characterized in that: The measuring tank level gauge installation opening (31) is installed with a measuring tank level gauge (8), and the length of the measuring tank level gauge (8) is set according to the measurement amount of the device.

6. The device for rapid and continuous detection of ammonia nitrogen according to claim 1, characterized in that: The top of the sealing plug (3) is provided with a reagent adding port (33) communicating with the measuring tank (21). The measuring tank (21) is connected to a reagent pump outside the device through the reagent adding port (33) to add a drug that reacts with the sample during testing.

7. The device for rapid and continuous detection of ammonia nitrogen according to claim 6, characterized in that: The top of the sealing plug (3) is provided with a standard liquid injection port (34) communicating with the measuring tank (21), and the measuring tank (21) is connected to a standard liquid pump outside the device through the standard liquid injection port (34) to calibrate the device.

8. A device for rapid and continuous detection of ammonia nitrogen as claimed in claim 6 or 7, characterized in that: A stirring motor (6) is installed on the top of the sealing plug (3), and the stirring blades of the stirring motor (6) extend into the measuring tank (21).

9. The device for rapid and continuous detection of ammonia nitrogen according to claim 1, characterized in that: The measuring tank fixing seat (2) is provided with a plurality of first annular grooves (23) on the outer surface of the end portion connected to the sand settling tank base (1), and an O-ring is installed on the first annular groove (23); A plurality of second annular grooves (36) are provided on the outer surfaces of both ends of the sealing plug (3), and an O-ring is also installed on the second annular groove (36) at the end of the sealing plug (3) connected to the measuring slot fixing seat (2).

10. The device for rapid and continuous detection of ammonia nitrogen according to claim 9, characterized in that: The top of the sealing plug (3) is provided with an airtightness test port (35) communicating with the measuring groove (21) to test the airtightness of the device.

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