A device for detecting ammonia nitrogen in water

Abstract

This application relates to the field of water body detection technology and discloses an ammonia nitrogen detection device in water, including a housing with an inlet pipe inserted into the top of the housing. This ammonia nitrogen detection device uses a suction device to pump the water to be tested into a pretreatment device, and a stirring device to agitate the water and regulate its temperature, allowing the water to settle and trap impurities on a filter screen. The pretreated and filtered water then enters the detection cylinder, where it is subjected to spectral measurement by a detection component for rapid detection. After detection, a drive mechanism, in conjunction with a displacement mechanism, moves the pretreatment device and detection cylinder laterally, separating them from the suction device for easy maintenance and repair of the pipeline. This significantly improves detection accuracy and response time, and thanks to advanced differential spectroscopy technology, it can effectively distinguish background noise interference.

Description

Technical Field

[0001] This utility model belongs to the field of water body detection technology, and in particular relates to a device for detecting ammonia nitrogen in water. Background Technology

[0002] With the acceleration of industrialization, water pollution has become increasingly serious, especially with excessive ammonia nitrogen levels, which has become a significant factor affecting water resource security. Currently, rapid and accurate measurement of ammonia nitrogen concentration in water has become a key focus for environmental protection departments and enterprises.

[0003] An existing patent (publication number: CN209014474U) discloses an ammonia nitrogen detection device and equipment. The ammonia nitrogen detection device includes a housing and a first detection component and a second detection component disposed within the housing. The first detection component includes a first reactor and a first detection element; the second detection component includes a second reactor and a second detection element. The first and second reactors are configured as open cylindrical sections and fixed to the bottom of the housing. The first and second detection elements are fixedly disposed within the housing. This utility model's ammonia nitrogen detection device includes two sets of detection components, where the first detection component is a gas detection component, and the second detection element detects the liquid within it.

[0004] Traditional methods for detecting ammonia nitrogen mainly include chemical titration, colorimetry, and electrochemical sensor methods. While existing technologies can meet the requirements to a certain extent, they still have many limitations in terms of accuracy, efficiency, and portability, and are not convenient for maintaining the detection device. Therefore, an ammonia nitrogen detection device in water is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides an ammonia nitrogen detection device for water, which features pipelines that are easy to inspect and maintain, significantly improves detection accuracy and response time, and benefits from advanced differential spectroscopy technology, effectively distinguishing background noise interference. This solves the problems pointed out in the aforementioned prior art, which, while meeting the requirements to a certain extent, still have many limitations in terms of accuracy, efficiency, and portability, and are inconvenient for maintaining the detection facility.

[0006] To achieve the above objectives, this application provides the following technical solution: an ammonia nitrogen detection device in water, comprising a housing, an inlet pipe inserted into the top of the housing, a suction device connected to the output end of the inlet pipe, a pretreatment device connected to the output end of the suction device, a stirring device inside the pretreatment device, an inner slide fixedly installed on the inner wall of the housing, the top of the stirring device slidably connected to the upper surface of the inner slide, a filter screen installed on the inner wall of the pretreatment device, a detection cylinder inserted into the bottom of the pretreatment device, a detection component installed inside the detection cylinder, a displacement mechanism threadedly connected to the bottom of the detection cylinder by bolts, a drive mechanism rotatably connected to the inner wall of the housing, and the displacement mechanism threadedly connected to the outside of the drive mechanism.

[0007] The above scheme connects the pretreatment device to the detection cylinder, and uses a suction device to pump the water to be tested into the pretreatment device. A stirring device agitates the water and regulates the temperature, allowing the water to settle and trap impurities on the filter screen. The pretreated and filtered water then enters the detection cylinder, where it is subjected to spectral measurement by the detection components for rapid detection. After detection, a drive mechanism, in conjunction with a displacement mechanism, moves the pretreatment device and detection cylinder laterally, separating them from the suction device for easy maintenance and repair of the pipeline. This significantly improves detection accuracy and response time. Thanks to advanced differential spectroscopy technology, it can effectively distinguish background noise interference.

[0008] Furthermore, the suction device includes a suction water pump, which is connected to an input pipe and an output pipe, and the inlet and outlet ends of the input pipe and the output pipe are equipped with rubber sealing sheets.

[0009] The above scheme uses a suction pump to generate internal suction force, which, together with the inlet pipe connected to the top, pumps the water to be tested into the outlet pipe, thereby providing driving force for the water intake of the pretreatment device.

[0010] Furthermore, the pretreatment device includes a pretreatment cylinder, the inner wall of which has an inner cavity, a heating rod is disposed inside the inner cavity, and an inlet pipe is disposed on the outer surface of the pretreatment cylinder, with the output pipe connected to the inside of the inlet pipe.

[0011] With the above scheme, when water enters the pretreatment cylinder, the heating rods evenly distributed inside the cylinder are activated to raise the temperature, thus maintaining a constant temperature for the water inside the pretreatment cylinder. In conjunction with the stirring device, the water inside is stirred to increase the efficiency of sedimentation and water separation. This, along with the filter screen, achieves a pretreatment filtration effect on the water, preventing excessive impurities from affecting the accuracy of ammonia nitrogen detection data.

[0012] Furthermore, the top of the detection cylinder is threaded with a sealing cap, the bottom of the pretreatment cylinder is provided with an inlet tube, the inner wall of the sealing cap is fixedly installed with a mounting bracket, the inlet tube extends into the interior of the sealing cap, the detection assembly includes an optical fiber coupler transmitter, and the bottom of the mounting bracket is fixedly connected with a receiver.

[0013] With the above scheme, by installing the receiver in the detection component at the bottom of the mounting frame, water is pretreated inside the pretreatment tube and then enters the detection tube through the inlet pipe and the central cavity of the sealing cap. By connecting the transmitter of the fiber optic coupler to the ultraviolet LED light source and cooperating with the receiver to form an open path differential absorption spectroscopy measurement mechanism, the intensity of the characteristic peak of the target substance is collected. The value is displayed on the display and recording panel on the top of the box. The display and recording panel integrates an LCD screen and a microprocessor circuit to present the final calculated result value and store historical archives for subsequent query and retrieval.

[0014] Furthermore, the stirring device includes a stirring motor, a slide is fixedly mounted on the outer surface of the stirring motor, a stirring frame is fixedly connected to the output end of the stirring motor, and the stirring frame extends into the interior of the pretreatment cylinder.

[0015] The above method involves starting a stirring motor to drive the stirring rack to rotate inside the pretreatment cylinder, which in turn causes the water to flow. Combined with a heating rod, this keeps the water at a constant temperature, allowing impurities in the water to settle more quickly and be blocked on the surface of the filter screen, preventing them from flowing down and affecting the spectral detection effect.

[0016] Furthermore, the displacement mechanism includes a displacement seat, a spring seat is fixedly installed at the bottom of the displacement seat, and connecting plates are provided on both sides of the spring seat. The connecting plates pass through the outside of the drive mechanism and are threadedly connected to it.

[0017] With the above solution, when the drive mechanism is rotated, its drive displacement seat moves laterally, and drives the top spring seat and the detection cylinder to move laterally together until the connection end of the inlet pipe and the output pipe on the side of the pretreatment cylinder connected to the top is disconnected. Even if the pipeline connection is broken, the detection cylinder can be separated by removing the bolts, which makes it easy to disassemble the various components, simplifying the daily maintenance and reducing the difficulty coefficient significantly. All moving parts are connected and assembled and disassembled in a quick-release manner, which is extremely convenient.

[0018] Furthermore, the driving mechanism includes a driving screw, one end of which is rotatably connected to a support plate, and the bottom of the support plate is fixedly connected to the bottom of the housing.

[0019] The above scheme involves rotating the drive screw to make it rotate on the inner wall of the support plate, thereby driving the displacement seat to move laterally, which in turn moves the top detection cylinder and the pretreatment cylinder together. This allows the pretreatment cylinder to be quickly separated from the connected components, facilitating the maintenance of the pipeline connection port and the disassembly of other connecting components.

[0020] Furthermore, a fixing seat is provided inside the housing, and the fixing seat is located at the bottom of the suction water pump.

[0021] The above solution provides stable support for the suction pump by using a fixed base.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] 1. This ammonia nitrogen detection device in water connects a pretreatment device to a detection cylinder. A suction device draws the water to be tested into the pretreatment device, while a stirring device agitates the water and regulates its temperature, allowing the water to settle and trap impurities on a filter screen. The pretreated water then enters the detection cylinder, where a detection component performs spectral measurements for rapid detection. After detection, a drive mechanism, in conjunction with a displacement mechanism, moves the pretreatment device and detection cylinder laterally, separating them from the suction device for easy maintenance and repair. This significantly improves detection accuracy and response time. Thanks to advanced differential spectroscopy technology, it can effectively distinguish background noise interference.

[0024] 2. This ammonia nitrogen detection device in water, when the drive mechanism is rotated, its drive displacement seat moves laterally, and drives the top spring seat and the detection cylinder to move laterally together until the connection end of the inlet pipe and the output pipe on the side of the pretreatment cylinder connected to the top is disengaged, thus the pipeline connection is broken. The detection cylinder can be separated by removing the bolts, thereby making it easy to disassemble the various components, simplifying the daily maintenance and significantly reducing the difficulty coefficient. All moving parts are connected by quick-release form, making assembly and disassembly extremely convenient. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall internal structure of the box of this utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the detection cylinder of this utility model;

[0028] Figure 4This is a schematic diagram of a partial cross-section of the pretreatment cylinder of this utility model;

[0029] Figure 5 This is a schematic diagram of the mounting bracket of this utility model.

[0030] The markings in the diagram are as follows: 1. Box body; 2. Water inlet pipe; 3. Suction device; 4. Pretreatment device; 5. Stirring device; 6. Inner slide; 7. Filter screen; 8. Detection cylinder; 9. Detection component; 10. Displacement mechanism; 11. Drive mechanism; 301. Suction pump; 302. Input pipe; 303. Output pipe; 304. Rubber sealing sheet; 401. Pretreatment cylinder; 402. Inner cavity; 403. Heating rod; 404. Inlet pipe; 12. Sealing cover; 405. Inlet pipe; 901. Fiber optic coupler transmitter; 902. Receiver; 13. Mounting bracket; 501. Stirring motor; 502. Slide; 503. Stirring frame; 1011. Displacement seat; 1012. Spring seat; 1013. Connecting plate; 1101. Drive screw; 1102. Support plate; 14. Fixed seat. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figures 1-4This embodiment of an ammonia nitrogen detection device in water includes a housing 1. A water inlet pipe 2 is inserted into the top of the housing 1. A suction device 3 is connected to the output end of the water inlet pipe 2. A pretreatment device 4 is connected to the output end of the suction device 3. A stirring device 5 is installed inside the pretreatment device 4. An inner slide 6 is fixedly installed on the inner wall of the housing 1. The top of the stirring device 5 is slidably connected to the upper surface of the inner slide 6. A filter screen 7 is installed on the inner wall of the pretreatment device 4. A detection cylinder 8 is inserted into the bottom of the pretreatment device 4. A detection component 9 is installed inside the detection cylinder 8. A displacement mechanism 10 is threadedly connected to the bottom of the detection cylinder 8 via bolts. A drive mechanism 11 is rotatably connected to the inner wall of the housing 1. The displacement mechanism 10 is threadedly connected to the outside of the drive mechanism 11. The device detects ammonia nitrogen in water by means of a pretreatment device. The pretreatment device 4 is connected to the detection cylinder 8. With the help of the suction device 3, the water to be tested is pumped into the interior of the pretreatment device 4. The stirring device 5 stirs the water inside and adjusts the temperature, allowing the water to settle and block impurities on the filter screen 7. After the water is pretreated and filtered, it enters the detection cylinder 8 and is then used with the detection component 9 to perform spectral measurement to achieve rapid detection. After the detection is completed, the drive mechanism 11 and the drive displacement mechanism 10 are used to move the pretreatment device 4 and the detection cylinder 8 laterally, which can separate them from the suction device 3 for easy maintenance of the pipeline. This combination significantly improves the detection accuracy and response time. Thanks to the advanced differential spectroscopy technology, it can effectively distinguish background noise interference.

[0033] Please see Figure 3 , Figure 4 and Figure 5 The pretreatment device 4 includes a pretreatment cylinder 401, with an inner cavity 402 formed in the inner wall of the pretreatment cylinder 401. A heating rod 403 is installed inside the inner cavity 402. An inlet pipe 404 is provided on the outer surface of the pretreatment cylinder 401, and an outlet pipe 303 is connected to the inside of the inlet pipe 404. The stirring device 5 includes a stirring motor 501, with a sliding seat 502 fixedly installed on the outer surface of the stirring motor 501. A stirring frame 503 is fixedly connected to the output end of the stirring motor 501 and extends into the interior of the pretreatment cylinder 401. When water enters the interior of the pretreatment cylinder 401, it is evenly distributed through the interior cavity 402. The heating rod 403 is activated to raise the temperature, maintaining a constant temperature for the water inside the pretreatment cylinder 401. It also works with the stirring device 5 to agitate the water, increasing the efficiency of sedimentation and water separation. This, combined with the filter screen 7, provides pretreatment filtration, preventing excessive impurities from affecting the accuracy of ammonia nitrogen detection data. The stirring motor 501 drives the stirring frame 503 to rotate inside the pretreatment cylinder 401, causing the water to flow. Combined with the heating rod 403, this maintains a constant water temperature, allowing impurities in the water to settle more quickly and be blocked on the surface of the filter screen 7, preventing further downstream flow and ensuring optimal spectral detection.

[0034] Please see Figure 4 and Figure 5 The top of the detection cylinder 8 is threaded with a sealing cap 12. The bottom of the pretreatment cylinder 401 is provided with an inlet pipe 405. The inner wall of the sealing cap 12 is fixedly installed with a mounting bracket 13. The inlet pipe 405 extends into the interior of the sealing cap 12. The detection component 9 includes an optical fiber coupler transmitter 901. The bottom of the mounting bracket 13 is fixedly connected with a receiver 902. By installing the receiver 902 in the detection component 9 at the bottom of the mounting bracket 13, water is pretreated inside the pretreatment cylinder 401 and then enters the interior of the detection cylinder 8 through the inlet pipe 405 and the central cavity of the sealing cap 12. By connecting the optical fiber coupler transmitter 901 to an ultraviolet LED light source and cooperating with the receiver 902 to form an open path differential absorption spectroscopy measurement mechanism, the intensity of the characteristic peak of the target substance is collected. The value is displayed on the display and recording panel on the top of the housing 1. The display and recording panel integrates an LCD screen and a microprocessor circuit to present the final calculated result value and store historical archives for subsequent query and retrieval.

[0035] Please see Figure 4 and Figure 5 The displacement mechanism 10 includes a displacement seat 1011, a spring seat 1012 fixedly mounted on the bottom of the displacement seat 1011, and connecting plates 1013 on both sides of the spring seat 1012. The connecting plates 1013 penetrate the exterior of the drive mechanism 11 and are threadedly connected to it. The drive mechanism 11 includes a drive screw 1101, one end of which is rotatably connected to a support plate 1102. The bottom of the support plate 1102 is fixedly connected to the bottom of the housing 1. By rotating the drive screw 1101, it is moved within the support plate 1102. The wall rotates to drive the displacement seat 1011 to move laterally, and drives the top spring seat 1012 and the detection cylinder 8 to move laterally together until the connection end of the inlet pipe 404 and the output pipe 303 on the side of the pretreatment cylinder 401 connected to the top is disengaged. The pipeline connection is broken, and the detection cylinder 8 can be separated by removing the bolts. This makes it easy to disassemble the various components, which simplifies the daily maintenance and reduces the difficulty of the maintenance. All moving parts are connected by quick-release type, which makes assembly and disassembly extremely convenient.

[0036] In this embodiment, an ammonia nitrogen detection device for water utilizes a suction pump 301 to generate internal suction force. This, combined with the inlet pipe 2 and outlet pipe 303 connected to the top, provides driving force for the water entering the pretreatment cylinder 401. A stirring motor 501 drives a stirring frame 503 to rotate inside the pretreatment cylinder 401, while a heating rod 403 maintains a constant water temperature. This increases the efficiency of sedimentation and water separation, and works in conjunction with a filter screen 7 to pre-treat and filter the water, preventing excessive impurities from affecting the accuracy of ammonia nitrogen detection data. The receiving end 902 of the detection component 9 is mounted at the bottom of the mounting frame 13, and the fiber optic coupler transmitter 90... 1. Connecting to an ultraviolet LED light source and working in conjunction with receiver 902 to form an open-path differential absorption spectroscopy measurement mechanism for detecting ammonia nitrogen in water, significantly improving detection accuracy and response time. Thanks to advanced differential spectroscopy technology, it can effectively distinguish background noise interference. The drive screw 1101 drives the displacement seat 1011 to move laterally, allowing the pretreatment cylinder 401 to be quickly separated from the connected components, facilitating the inspection of pipeline connection ports and the disassembly of other connecting components. This simplifies daily maintenance and significantly reduces the difficulty coefficient. All moving parts are connected and disassembled in a quick-release manner, making assembly and disassembly extremely convenient.

[0037] It should be noted that...

[0038] The working principle of the above embodiments is as follows:

[0039] By activating the suction pump 301, a suction force is generated inside, which, together with the water inlet pipe 2 connected to the top, draws the water to be tested into the output pipe 303. After the water enters the pretreatment cylinder 401 through the output pipe 303, the heating rods 403, evenly distributed inside its inner cavity 402, begin to heat up. The stirring motor 501 drives the stirring frame 503 to rotate inside the pretreatment cylinder 401, causing the water to flow. Combined with the heating rods 403, this maintains a constant temperature, allowing impurities in the water to settle more quickly and be blocked on the surface of the filter screen 7. After pretreatment inside the pretreatment cylinder 401, the water enters through the inlet pipe 405 and the central cavity of the sealing cover 12. Inside the detection cylinder 8, the intensity of the characteristic peak of the target substance is collected by connecting the transmitter 901 of the fiber optic coupler to the ultraviolet LED light source and the receiver 902 to form an open path differential absorption spectroscopy measurement mechanism. The value is displayed on the display and recording panel on the top of the housing 1. After the water body detection is completed, when the drive mechanism 11 is rotated, its drive displacement seat 1011 moves laterally, and drives the top spring seat 1012 to move laterally together with the detection cylinder 8 until the connection end of the inlet pipe 404 and the output pipe 303 on the side of the pretreatment cylinder 401 connected to the top is disconnected, that is, the pipeline connection is broken, and the detection cylinder 8 can be separated by removing the bolts.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application.

Claims

1. A device for detecting ammonia nitrogen in water, comprising a housing (1), characterized in that: A water inlet pipe (2) is inserted into the top of the box (1). A suction device (3) is connected to the output end of the water inlet pipe (2). A pretreatment device (4) is connected to the output end of the suction device (3). A stirring device (5) is installed inside the pretreatment device (4). An inner slide (6) is fixedly installed on the inner wall of the box (1). The top of the stirring device (5) is slidably connected to the upper surface of the inner slide (6). A filter screen (7) is installed on the inner wall of the pretreatment device (4). A detection cylinder (8) is inserted into the bottom of the pretreatment device (4). A detection component (9) is installed inside the detection cylinder (8). A displacement mechanism (10) is connected to the bottom of the detection cylinder (8) by bolt thread. A drive mechanism (11) is rotatably connected to the inner wall of the box (1). The displacement mechanism (10) is threadedly connected to the outside of the drive mechanism (11).

2. The ammonia nitrogen detection device in water according to claim 1, characterized in that: The suction device (3) includes a suction water pump (301), and an input pipe (302) and an output pipe (303) are connected to the suction water pump (301). The inlet and outlet ends of the input pipe (302) and the output pipe (303) are provided with rubber sealing sheets (304).

3. The ammonia nitrogen detection device in water according to claim 2, characterized in that: The pretreatment device (4) includes a pretreatment cylinder (401), the inner wall of the pretreatment cylinder (401) is provided with an inner cavity (402), a heating rod (403) is provided inside the inner cavity (402), an inlet pipe (404) is provided on the outer surface of the pretreatment cylinder (401), and the output pipe (303) is connected to the inside of the inlet pipe (404).

4. The ammonia nitrogen detection device in water according to claim 3, characterized in that: The top of the detection cylinder (8) is threaded with a sealing cap (12), the bottom of the pretreatment cylinder (401) is provided with an inlet tube (405), the inner wall of the sealing cap (12) is fixedly installed with a mounting bracket (13), the inlet tube (405) extends into the interior of the sealing cap (12), the detection assembly (9) includes an optical fiber coupler transmitter (901), and the bottom of the mounting bracket (13) is fixedly connected with a receiver (902).

5. The ammonia nitrogen detection device in water according to claim 3, characterized in that: The stirring device (5) includes a stirring motor (501), a slide (502) is fixedly installed on the outer surface of the stirring motor (501), and a stirring frame (503) is fixedly connected to the output end of the stirring motor (501). The stirring frame (503) extends into the interior of the pretreatment cylinder (401).

6. The ammonia nitrogen detection device in water according to claim 1, characterized in that: The displacement mechanism (10) includes a displacement seat (1011), a spring seat (1012) is fixedly installed at the bottom of the displacement seat (1011), and a connecting plate (1013) is provided on both sides of the spring seat (1012). The connecting plate (1013) passes through the outside of the drive mechanism (11) and is threadedly connected to it.

7. The ammonia nitrogen detection device in water according to claim 1, characterized in that: The driving mechanism (11) includes a driving screw (1101), one end of which is rotatably connected to a support plate (1102), and the bottom of the support plate (1102) is fixedly connected to the bottom inside the box (1).

8. The ammonia nitrogen detection device in water according to claim 2, characterized in that: The housing (1) is equipped with a fixing seat (14) inside, which is located at the bottom of the suction pump (301).

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