Ammonia nitrogen expelling colorimetric detection analysis flow path system

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By designing an ammonia nitrogen expulsion colorimetric detection and analysis flow path system, the combination of the expulsion tube and the absorption and digestion measurement tube is used, and the problem of interference in the ammonia nitrogen measurement results in the prior art is solved, and the accurate measurement of the ammonia nitrogen content in industrial wastewater and wastewater is achieved.

CN222825465UActive Publication Date: 2025-05-02DELIN ENVIRONMENTAL PROTECTION TECH

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Patent Information

Application Number: CN202420468319.6
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-03-12
Publication Date: 2025-05-02
Estimated Expiration: 2034-03-12

AI Technical Summary

Technical Problem

When measuring the ammonia nitrogen content in industrial wastewater and wastewater, existing water quality ammonia nitrogen online analyzers may be affected by interfering substances, resulting in inaccurate measurement results.

Method used

A simple structure and low-cost ammonia nitrogen expulsion colorimetric detection and analysis flow path system is designed. The system includes an expulsion tube, an absorption and digestion measuring tube, a diaphragm pump, a solenoid valve and other components. By expulsion and absorption of liquids, combined with salicylic acid method or Nass reagent colorimetric method, the ammonia nitrogen content is accurately measured.

Benefits of technology

It effectively solves the problem of interfering substances affecting ammonia nitrogen measurement results, and realizes accurate measurement of ammonia nitrogen content in industrial wastewater and wastewater.

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Abstract

The utility model discloses a colorimetric detection and analysis flow path system for expelling ammonia nitrogen. The system comprises an expelling pipe, an absorption and digestion measuring pipe, a diaphragm pump, a two-way electromagnetic valve, a multi-way valve, a quantitative ring, a three-way electromagnetic valve, a liquid level detector, a peristaltic pump and a three-way connector. The system comprises three three-way electromagnetic valves, wherein each electromagnetic valve comprises a common end C, a normally closed end NC and a normally open end NO; a lower outlet of the expelling pipe is connected with one branch port of the multi-way valve, and a lower outlet of the absorption and digestion measuring pipe is connected with the other branch port of the multi-way valve; a guide pipe is arranged at the upper top of the expelling pipe and is connected with an inlet hose of the diaphragm pump; a side branch opening of the expelling pipe is connected with an upper branch opening of the absorption and digestion measuring pipe through a connecting pipe; a side branch opening of the absorption and digestion measuring pipe is connected with an outlet of the diaphragm pump through a connecting pipe; the ejection pipe is connected with a branch opening in the other side of the absorption and digestion measuring pipe through the three-way joint, and a third connecting opening of the three-way joint is connected with the two-way electromagnetic valve. By adopting the flow path system, an ammonia nitrogen expelling system can be perfectly combined with a salicylic acid method or a Nessler reagent photometric colorimetric method, and the problem that the accurate measurement of ammonia nitrogen is influenced by interfering substances is solved.

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Description

Technical Field

[0001] The utility model relates to the field of chemical analysis instruments, in particular to an ammonia nitrogen expulsion colorimetric detection and analysis flow path system. Background Art

[0002] After the existing water quality ammonia nitrogen online analyzer is installed in some sites, when the instrument is compared and accepted, the ammonia nitrogen value measured by the instrument is higher than the manual test value. It is possible that some interfering substances in the water body to be tested affect the measurement result. In view of the above situation, the utility model provides a simple structure and low cost ammonia nitrogen expulsion colorimetric detection and analysis flow path, which can accurately measure the ammonia nitrogen content in industrial wastewater and sewage. Utility Model Content

[0003] The utility model provides an ammonia nitrogen expulsion colorimetric detection and analysis flow path with a simple structure and low cost. The system includes an expulsion tube, an absorption and digestion measuring tube, a diaphragm pump, a two-way solenoid valve, a multi-way valve, a quantitative ring, a three-way solenoid valve, a liquid level detector, a peristaltic pump, and a three-way joint. The three three-way solenoid valves of the system, each solenoid valve includes a common end C, a normally closed end NC, and a normally open end NO; the lower outlet of the expulsion tube is connected to a branch of the multi-way valve, and the lower outlet of the absorption and digestion measuring tube is connected to another branch of the multi-way valve; a conduit is provided at the top of the expulsion tube to connect to the inlet hose of the diaphragm pump, and the side branch of the expulsion tube is connected to the upper branch of the absorption and digestion measuring tube through a connecting tube; the side branch of the absorption and digestion measuring tube is connected to the outlet of the diaphragm pump through a connecting tube; the expulsion tube and the other side branch of the absorption and digestion measuring tube are connected to the two connecting pipes through the three-way joint, and the third connecting port of the three-way joint is connected to the two-way solenoid valve.

[0004] Furthermore, the expulsion tube is provided with three openings, namely a vent opening, an air inflation opening, and an expulsion opening. The air inflation opening is provided with a thin tube extending to the bottom of the expulsion tube.

[0005] Furthermore, the absorption and digestion measuring tube is also provided with three openings, namely, a vent opening, an air blowing opening, and an expulsion opening. The air blowing opening is also provided with a thin tube extending to the bottom of the expulsion tube.

[0006] Furthermore, the absorption and digestion measuring tube is provided with a temperature measuring tank, and a heating device is provided on the periphery of the absorption and digestion measuring tube.

[0007] Furthermore, the multi-way valve, quantitative ring, solenoid valve, liquid level detector, and peristaltic pump are connected in sequence through connecting pipes, specifically, the NO end of the first solenoid valve is connected to the reagent waste liquid pipe, the NC end is connected to the cleaning waste liquid pipe, and the common end C is connected to the NC end of the second solenoid valve through a connecting pipe; the NO end of the second solenoid valve is connected to distilled water, and the common C end of the second solenoid valve is connected to one end of the peristaltic pump; the other end of the peristaltic pump is connected to one end of the liquid level detector; the other end of the liquid level detector is connected to the NC end of the third solenoid valve, the NO end of the third solenoid valve is connected to the air waste liquid pipe, and the common C end of the third solenoid valve is connected to the center hole of the multi-way valve through the quantitative ring.

[0008] Beneficial effects of the utility model:

[0009] The utility model adopts an ammonia nitrogen expulsion colorimetric detection and analysis flow path system, which utilizes a simple-structured expulsion tube, an absorption and digestion measuring tube, and a concise flow path to expel and absorb ammonia in a complex water body, and then uses a salicylic acid method or a Nessler's reagent colorimetric method to measure the ammonia nitrogen content, which can effectively solve the problem of interfering substances affecting the accurate measurement of ammonia nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an application example of an ammonia nitrogen expulsion colorimetric detection and analysis flow path system of the utility model.

[0011] Figure 2 It is a three-dimensional structural diagram of the absorption and digestion measuring tube of the utility model.

[0012] Figure 3 This is a cross-sectional structural diagram of the absorption and digestion measuring tube of the utility model.

[0013] Figure 4 It is a cross-sectional structural diagram of the expulsion pipe of the utility model.

[0014] In the figure: 1-first solenoid valve, 1.1-cleaning waste liquid pipe, 1.2-reagent waste liquid pipe, 2-second solenoid valve, 2.1-distilled water pipe, 3-peristaltic pump, 4-liquid level detector, 5-third solenoid valve, 5.1-air waste liquid pipe, 6-quantitative loop, 7-discharge pipe, 7.1-air vent, 7.2-air blowing port, 7.3-discharge port, 7.4-extension pipe, 8-multi-way valve, 8.1-multi-way valve center hole, 8.2, 8.3-branch port, 9-absorption digestion measuring tube, 9.1-air vent, 9.2-air blowing port, 9.3-discharge circulation port, 9.4-temperature measuring tank, 9.5-heating fixture, 9.6-extension pipe, 10-diaphragm pump, 11-two-way solenoid valve, 12-three-way connector, DETAILED DESCRIPTION

[0015] The following is a further description of the ammonia nitrogen expulsion colorimetric detection and analysis flow path system of the utility model in combination with the accompanying drawings and specific embodiments.

[0016] like Figure 1 As shown, the utility model is an ammonia nitrogen expulsion colorimetric detection and analysis flow path system, which includes an expulsion tube (7), an absorption and digestion measurement tube (9), a diaphragm pump (10), a two-way solenoid valve (11), a multi-way valve (8), a quantitative ring (6), a three-way solenoid valve (1, 2, 5), a liquid level detector (4), a peristaltic pump (3), and a three-way connector (12). The three three-way solenoid valves of the system each include a common end C, a normally closed end NC, and a normally open end NO.

[0017] When connected, the lower outlet of the expelling pipe (7) is connected to one branch port (8.2) of the multi-way valve (8), and the lower outlet of the absorption and digestion measuring pipe (9) is connected to another branch port (8.3) of the multi-way valve (8); the upper top expelling port (7.3) of the expelling pipe (7) is provided with a conduit connected to the inlet hose of the diaphragm pump (10); the side branch port air blowing port (7.2) of the expelling pipe (7) is connected to the upper branch port expelling circulation port (9.3) of the absorption and digestion measuring pipe (9) through a connecting pipe; the side branch port air blowing port (9.2) of the absorption and digestion measuring pipe (9) is connected to the outlet of the diaphragm pump (10) through a connecting pipe; the expelling pipe (7) and the other side branch port (7.1, 9.1) of the absorption and digestion measuring pipe (9) are connected to the two connecting pipes through the three-way joint (12), and the third connecting port of the three-way joint (12) is connected to the two-way solenoid valve (11). The NO end of the first solenoid valve (1) is connected to a reagent waste liquid pipe (1.2), the NC end is connected to a cleaning waste liquid pipe (1.1), and the common end C is connected to the NC end of the second solenoid valve (2) through a connecting pipe; the NO end of the second solenoid valve (2) is connected to distilled water, and the common C end of the second solenoid valve (2) is connected to one end of a peristaltic pump (3); the other end of the peristaltic pump (3) is connected to one end of a liquid level detector (4); the other end of the liquid level detector (4) is connected to the NC end of the third solenoid valve (5), the NO end of the third solenoid valve is connected to an air waste liquid pipe, and the common C end of the third solenoid valve (5) is connected to the center hole (8.1) of the multi-way valve (8) through a quantitative ring (6).

[0018] When the water sample is expelled, the two-way solenoid valve (11) is opened to draw the absorption liquid into the absorption digestion measuring tube: the branch holes of the multi-way valve (8) are connected to the reagents, water samples and standard liquids through connecting tubes respectively, and the central hole (8.1) of the multi-way valve (8) is selectively connected to the absorption liquid branch hole. The third solenoid valve (5), the second solenoid valve (2) and the first solenoid valve (1) are energized, and the peristaltic pump (3) rotates clockwise to draw the absorption liquid from the absorption liquid branch hole and fill the quantitative ring (6). After the liquid level detector (4) detects the liquid, the peristaltic pump (3) stops rotating; then the action of discharging excess absorption liquid is executed, that is, the third solenoid valve (5) is not energized, the second solenoid valve (2) and the first solenoid valve (1) are energized, and the peristaltic pump (3) rotates counterclockwise to discharge the excess absorption liquid except the quantitative ring (6) from the air waste liquid pipe (5.1), thereby realizing quantitative extraction of absorption liquid. According to the above-mentioned method of extracting the absorption liquid, the release liquid is extracted into the expulsion tube, and then the high-temperature and high-pressure solenoid valve is closed; the diaphragm pump is turned on to extract the water sample into the expulsion tube, and the expulsion cycle is repeated for a period of time.

[0019] During colorimetric measurement, turn off the diaphragm pump, open the high-temperature and high-pressure solenoid valve, and then add the reagents required for measuring ammonia nitrogen by the salicylic acid method or Nessler's reagent method into the absorption and digestion measuring tube for colorimetric measurement. The ammonia nitrogen concentration value of the water sample is calculated through the built-in standard curve.

Claims

1. An ammonia nitrogen expulsion colorimetric detection and analysis flow path system, characterized in that: The system comprises an expulsion tube, an absorption and digestion measuring tube, a diaphragm pump, a two-way solenoid valve, a multi-way valve, a quantitative ring, a three-way solenoid valve, a liquid level detector, a peristaltic pump and a three-way joint; the three three-way solenoid valves of the system, each of which comprises a common end C, a normally closed end NC and a normally open end NO; the lower outlet of the expulsion tube is connected to a branch of the multi-way valve, and the lower outlet of the absorption and digestion measuring tube is connected to another branch of the multi-way valve; a conduit is provided at the top of the expulsion tube and connected to the inlet hose of the diaphragm pump, and the side branch of the expulsion tube is connected to the upper branch of the absorption and digestion measuring tube through a connecting tube; the side branch of the absorption and digestion measuring tube is connected to the outlet of the diaphragm pump through a connecting tube; the expulsion tube and the other side branch of the absorption and digestion measuring tube are connected to the two connecting pipes through the three-way joint, and the third connecting port of the three-way joint is connected to the two-way solenoid valve.

2. The ammonia nitrogen expulsion colorimetric detection and analysis flow path system according to claim 1, characterized in that: The expelling pipe is provided with three openings, namely, a venting opening, an air blowing opening and an expelling opening. The air blowing opening is provided with a thin tube extending to the bottom of the expelling pipe.

3. The ammonia nitrogen expulsion colorimetric detection and analysis flow path system according to claim 1, characterized in that: The absorption and digestion measuring tube is also provided with three ports, namely, a vent port, an air blowing port, and an expulsion circulation port. The expulsion circulation port is also provided with a thin tube extending to the bottom of the absorption and digestion measuring tube.

4. The ammonia nitrogen expulsion colorimetric detection and analysis flow path system according to claim 1, characterized in that: The absorption and digestion measuring tube is provided with a temperature measuring tank, and the outer periphery of the absorption and digestion measuring tube is provided with a heating fixing device.

5. The ammonia nitrogen expulsion colorimetric detection and analysis flow path system according to claim 1, characterized in that: The multi-way valve, quantitative ring, solenoid valve, liquid level detector, and peristaltic pump are connected in sequence through connecting pipes, specifically, the NO end of the first solenoid valve is connected to the reagent waste liquid pipe, the NC end is connected to the cleaning waste liquid pipe, and the common end C is connected to the NC end of the second solenoid valve through a connecting pipe; the NO end of the second solenoid valve is connected to distilled water, and the common C end of the second solenoid valve is connected to one end of the peristaltic pump; the other end of the peristaltic pump is connected to one end of the liquid level detector; the other end of the liquid level detector is connected to the NC end of the third solenoid valve, the NO end of the third solenoid valve is connected to the air waste liquid pipe, and the common C end of the third solenoid valve is connected to the center hole of the multi-way valve through the quantitative ring.