CN114184649A - Ammonia nitrogen detection part and ammonia nitrogen detection equipment - Google Patents
Ammonia nitrogen detection part and ammonia nitrogen detection equipment Download PDFInfo
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- CN114184649A CN114184649A CN202010960744.3A CN202010960744A CN114184649A CN 114184649 A CN114184649 A CN 114184649A CN 202010960744 A CN202010960744 A CN 202010960744A CN 114184649 A CN114184649 A CN 114184649A
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- 238000001514 detection method Methods 0.000 title claims abstract description 101
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000006243 chemical reaction Methods 0.000 claims abstract description 185
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000004891 communication Methods 0.000 claims description 18
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- 229910021529 ammonia Inorganic materials 0.000 claims description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/07—Construction of measuring vessels; Electrodes therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/302—Electrodes, e.g. test electrodes; Half-cells pH sensitive, e.g. quinhydron, antimony or hydrogen electrodes
Abstract
Provides an ammonia nitrogen detection component and ammonia nitrogen detection equipment. The ammonia nitrogen detection part comprises a reaction cavity, the reaction cavity is used for containing a reaction reagent and receiving ammonia gas in a sample to be detected, the ammonia gas can react with the reaction reagent, the ammonia nitrogen detection part further comprises a liquid storage cavity, the liquid storage cavity is used for storing the reaction reagent, the liquid storage cavity and the reaction cavity can be communicated or isolated in a controlled manner, and therefore the liquid storage cavity supplements the stored reaction reagent to the reaction cavity when the reaction reagent in the reaction cavity reacts to a preset degree. The ammonia nitrogen detection part is provided with a 'reaction reagent' library, and when the reaction reagent in the reaction cavity is consumed and the ammonia nitrogen detection part does not have detection capability any more or the detection sensitivity is reduced, the liquid storage cavity can automatically supplement the reaction reagent to the reaction cavity, so that the detection capability of the ammonia nitrogen detection part is recovered in time or the detection sensitivity is improved, and the service life of the ammonia nitrogen detection part is prolonged.
Description
Technical Field
The utility model relates to a water quality testing technical field, in particular to ammonia nitrogen detection part and ammonia nitrogen detection equipment.
Background
The ammonia nitrogen detector can be used for detecting the ammonia nitrogen concentration. The existing ammonia nitrogen detector mainly comprises the following two types:
the first method, using spectrophotometry, is to mix the sample to be analyzed with the reagent and make the reagent in solutionNH4 +Ion conversion to ammonia (NH)3) The ammonia gas is then transferred to a measuring cell containing the indicator in which it is redissolved. The reaction causes the color of the solution to change, and the ammonia nitrogen detector measures by using a colorimetric method and then calculates the concentration value of the ammonia nitrogen.
Secondly, an ammonia nitrogen detector utilizing an ammonia gas sensitive electrode method, wherein an ammonia nitrogen detection part is a main structure of the ammonia nitrogen detector and comprises a reaction reagent and an ion electrode which can participate in reaction. The sample to be analyzed is mixed with the reagent, free NH3With H in the reactants+Ion reaction to form NH4 +Ion, the pH of the reagent changes. Amount of change in pH and NH3The concentration of (a) is linear, and the amount of change in the pH is sensed by the electrode and can be converted to the ammonia nitrogen concentration.
The two ammonia nitrogen detectors are used for testing in a shore station, and a considerable amount of reagent or indicator is required to be added during detection so as to meet the requirements of testing optical path, color development and the like. The reagent consumed by the first ammonia nitrogen detector per month is about 1L, the reagent consumption is large, and the mixing and measurement of the sample to be detected and the reagent are usually performed by using a pump, a valve and the like through an expulsion method, so that the used instrument is complex. The second ammonia nitrogen detector has short service life, and the detection requirement of about 15 days can be met only by completing one reagent addition. If the service life of one-time reagent addition is prolonged, the volume needs to be increased, so that the concentration of the component to be detected is reduced, and the sensitivity of the ammonia nitrogen detector is further reduced.
Disclosure of Invention
The present disclosure is made in view of the state of the art described above. The purpose of the disclosure is to provide an ammonia nitrogen detection part and ammonia nitrogen detection equipment, the ammonia nitrogen detection part and the ammonia nitrogen detection equipment have longer service life, and after reagent is added once, the service life can be as long as 2 years.
Provides an ammonia nitrogen detection component, which comprises a reaction cavity, wherein the reaction cavity is used for containing a reaction reagent and receiving ammonia gas in a sample to be detected, the ammonia gas can react with the reaction reagent,
the ammonia nitrogen detection part also comprises a liquid storage cavity, the liquid storage cavity is used for storing the reaction reagent, and the liquid storage cavity can be communicated or isolated with the reaction cavity in a controlled manner, so that when the reaction reagent in the reaction cavity reacts to a preset degree, the liquid storage cavity supplements the reaction reagent stored in the reaction cavity.
Preferably, the ammonia nitrogen detection part comprises an electromagnetic valve, and the electromagnetic valve can enable the reaction cavity and the liquid storage cavity to be communicated or isolated.
Preferably, the liquid storage cavity is located above the reaction cavity, the lower end of the reaction cavity is used for receiving the ammonia gas, and the upper end of the reaction cavity is used for receiving the reaction reagent in the liquid storage cavity.
Preferably, the ammonia nitrogen detection part comprises a stopping piece and a communication passage between the reaction cavity and the liquid storage cavity, the stopping piece can reciprocate to enter and exit the communication passage, and the communication passage is matched with the stopping piece in shape, so that the stopping piece can block the communication passage.
Preferably, the lower end of the reaction chamber is used for receiving ammonia gas, and the liquid storage chamber is located at the radial outer side of the reaction chamber, so that the reaction chamber can be communicated or isolated with the liquid storage chamber in the radial direction of the reaction chamber.
Preferably, the ammonia nitrogen detection part comprises a stopping part capable of reciprocating along the vertical direction of the reaction cavity, the stopping part is communicated with or separates the reaction cavity and the liquid storage cavity, and the stopping part is an annular plate body which surrounds the reaction cavity for a circle.
Preferably, the ammonia nitrogen detection part comprises a functional cavity for mounting an electronic part and an electrode for detection, the functional cavity is positioned above the reaction cavity, the electrode is connected with the electronic part in the functional cavity, and the detection end of the electrode is positioned in the reaction cavity.
Preferably, the volume of the liquid storage cavity is more than 50 times of the volume of the reaction cavity.
Preferably, the reaction cavity has a volume of 0.1ml to 2ml, and the reservoir cavity has a volume of 50ml to 500 ml.
Preferably, the ammonia nitrogen detection component comprises an electrode for detection, the detection end of the electrode is positioned in the reaction cavity, and the electrode is used for detecting the pH value and/or the conductivity of the reaction reagent.
Optionally, the reaction chamber is provided with a gas outlet for discharging hydrogen gas generated by the reaction in the reaction chamber. When the volume of the reaction cavity is small, the air input is limited, most of the generated hydrogen can be dispersed in the reaction reagent, and an air outlet is not required to be arranged. When the volume of the reaction cavity is larger, the generated hydrogen is more, and the hydrogen generated by the reaction can be discharged through the exhaust port, so that the pressure in the reaction cavity is prevented from being obviously increased.
Still provide an ammonia nitrogen check out test set, ammonia nitrogen check out test set includes according to the ammonia nitrogen detection part of any one of above-mentioned technical scheme.
The technical scheme provided by the disclosure at least has the following beneficial effects:
the ammonia nitrogen detection part is provided with a 'reaction reagent' library, and when the reaction reagent in the reaction cavity is consumed and the ammonia nitrogen detection part does not have detection capability any more or the detection sensitivity is reduced, the liquid storage cavity can automatically supplement the reaction reagent to the reaction cavity, so that the detection capability of the ammonia nitrogen detection part is recovered in time or the detection sensitivity is improved, and the service life of the ammonia nitrogen detection part is prolonged.
Drawings
Figure 1a is a schematic diagram of one embodiment of an ammonia nitrogen detection component provided by the present disclosure, showing the reaction chamber and the reservoir chamber isolated.
FIG. 1b is a schematic view of the ammonia nitrogen detecting means of FIG. 1a, showing the reaction chamber and the reservoir chamber in communication.
FIG. 1c is a cross-sectional view of the ammonia nitrogen detecting element of FIG. 1a, showing the electrical connection path of the electrodes.
Figure 2a is a schematic diagram of another embodiment of the ammonia nitrogen detection component provided by the present disclosure, showing the reaction chamber and the liquid storage chamber isolated.
FIG. 2b is a schematic view of the ammonia nitrogen detecting component of FIG. 2a showing the reaction chamber and the reservoir chamber in communication.
Description of reference numerals:
the device comprises a reaction cavity 1, a liquid storage cavity 2, a functional cavity 3, a communication passage 4, a stop piece 5, an electrode 6, a semipermeable membrane 7, an electric connection channel 9 and an electric wire 91;
and A is in the up-down direction.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings. It should be understood that the detailed description is intended only to teach one skilled in the art how to practice the disclosure, and is not intended to be exhaustive or to limit the scope of the disclosure.
As shown in fig. 1a to 2b, the present disclosure provides an ammonia nitrogen detection component, which can be used for detecting the ammonia nitrogen content in a water body (sample to be detected). The ammonia nitrogen detection component comprises a reaction cavity 1 and a liquid storage cavity 2, wherein the reaction cavity 1 is used for containing a reaction reagent (such as boric acid solution) and receiving ammonia gas in a sample to be detected.
It will be appreciated that ammonia gas is derived from the NH in the sample to be tested by methods known in the art4 +Converted into, e.g. NH4 +Can be converted to ammonia gas by reaction with a base, which can be a strong base such as NaOH, or NH4 +Can be converted into ammonia gas under the action of the electrode.
The volume of the liquid storage cavity 2 is larger than that of the reaction cavity 1 and is used for storing reaction reagents. For example, the volume of the reservoir chamber 2 is 50 times or more, preferably 200 times or more, more preferably 1000 times or more, and still more preferably 2500 times or more the volume of the reaction chamber 1. For example, the reaction chamber 1 has a volume of 0.1ml to 2ml, preferably 0.1ml to 0.5ml, more preferably 0.1ml to 0.2ml, and the reservoir chamber 2 has a volume of 50ml to 500 ml.
The ammonia nitrogen detection component also comprises an electrode 6 for detection, and the detection end of the electrode 6 is positioned in the reaction cavity 1 for detecting parameters such as pH value, conductivity and the like of the reaction reagent.
The conductivity of the detection reagent has the following advantages compared to the pH of the detection reagent:
first, the conductivity is more sensitive to detection;
secondly, the measurement result is more accurate (only two decimal points can be read when the pH value is detected);
third, the probe for detecting conductivity has a longer life.
The liquid storage cavity 2 and the reaction cavity 1 can be communicated or separated in a controlled and automatic way.
When the reaction reagent in the reaction chamber 1 reacts to a predetermined degree, for example, when the boric acid solution in the reaction chamber 1 reacts with ammonia gas to saturation, the parameters detected by the ammonia nitrogen detection component can no longer accurately reflect the ammonia nitrogen concentration in the sample to be detected. Under a possible working mode, the ammonia nitrogen detection component detects the ammonia nitrogen concentration of surface water, works once every 10 minutes, and after 1-2 days of work, the reaction reagent in the reaction cavity 1 is saturated by ammonia gas, and the signal reaches the maximum value.
At the moment, the liquid storage cavity 2 is communicated with the reaction cavity 1, the liquid storage cavity 2 automatically replenishes the stored reaction reagent to the reaction cavity 1, and the fresh boric acid solution in the liquid storage cavity 2 is exchanged to the reaction cavity 1 in a solution diffusion mode. When the reaction reagent in the reaction cavity 1 is supplemented, the reaction cavity 1 and the liquid storage cavity 2 are isolated again, and the ammonia nitrogen detection part continues to work in a new period.
The above-mentioned predetermined degree may be determined, for example, by judging time, conductivity, or the like. Specifically, for example, during the detection process, ammonia gas continuously enters the reaction chamber 1, so that the absolute value of the electrical conductivity inside the reaction chamber gradually increases, and finally, when the maximum range or the predetermined value of the electrical conductivity is reached, it is determined that the reaction reagent reacts to the predetermined degree. Also for example, a time is calculated based on the frequency of the test and the average amount of the reagent required for the test, and the time is set as a time for replenishing the reaction chamber 1 with the stored reagent.
It should be understood that when the reagent in the reservoir 2 diffuses into the reaction chamber 1, the concentration of the reagent in the reservoir 2 gradually decreases, and the concentration of the reagent in the reaction chamber 1 gradually increases, so that the reaction chamber 1 can be replenished with fresh reagent, and the reaction of the reagent with ammonia gas can be realized no matter the concentration of the boric acid solution in the reaction chamber 1.
Like this, ammonia nitrogen detection part is from taking "reagent reaction" storehouse, when the reagent consumption in reaction chamber 1 and lead to ammonia nitrogen detection part no longer to have the detection ability or detectivity to descend, thereby the reagent in two chambeies has concentration difference and the reagent of stock solution chamber 2 diffuses to reaction chamber 1 nature, thereby stock solution chamber 2 supplements reagent to reaction chamber 1 automatically, this detection ability that has in time resumeed ammonia nitrogen detection part or has improved detectivity, and then lengthened ammonia nitrogen detection part's life.
Taking the ammonia nitrogen detection part with the reaction cavity 1 and the liquid storage cavity 2 with the sizes as an example, the service life of the ammonia nitrogen detection part can be as long as 1 year to 2 years.
As shown in fig. 1a and 1b, in an embodiment of the ammonia nitrogen detecting component provided by the present disclosure, the reservoir 2 may be located above the reaction chamber 1, and a communication passage 4 that can be blocked by a solenoid valve described later may be provided between the reservoir 2 and the reaction chamber 1.
The "radial direction" of the reaction chamber 1 is a direction perpendicular to the vertical direction a of the reaction chamber 1, which will be described later.
The lower end of the reaction chamber 1 is used for receiving ammonia gas (including, for example, NH) in a sample to be measured3·H2O), specifically, the lower end of the reaction chamber 1 may be provided with a semipermeable membrane 7, and ammonia gas can penetrate through the semipermeable membrane 7 to enter the reaction chamber 1. The detection end of the electrode 6 may be at a distance of, for example, 0.1mm to 2mm, preferably not more than 1mm, from the semipermeable membrane 7. The upper end of reaction chamber 1 docks with the lower extreme of intercommunication route 4, and the upper end of intercommunication route 4 docks with stock solution chamber 2 to the upper end of reaction chamber 1 can indirectly communicate with stock solution chamber 2.
It should be understood that when the ammonia nitrogen detection component is put into use, the liquid storage cavity 2 and the reaction cavity 1 are not vertically arranged up and down due to the environment (fluctuating along with the measured water body) where the ammonia nitrogen detection component is located. The terms "upper" and "lower" are used herein only to indicate relative positional relationships.
The ammonia nitrogen detection part can comprise an electromagnetic valve and an electric control device, the electric control device controls the electromagnetic valve, the electromagnetic valve comprises a stopping piece 5, and the stopping piece 5 reciprocates under the action of magnetic force so as to enter and exit the communicating passage 4. The shape of the communication path 4 is adapted to the stopper 5 so that the stopper 5 can be blocked, for example, to fill the communication path 4 to isolate the reaction chamber 1 and the reservoir chamber 2.
Specifically, the shut-off member 5 may be a block having a large upper end and a small lower end, so that the shut-off member 5 can be quickly and safely introduced into the communication passage 4.
In addition, the stopping piece 5 disturbs the reaction reagent in the liquid storage cavity 2 in the reciprocating process, and promotes the reaction reagent in the liquid storage cavity 2 to enter the reaction cavity 1. Optionally, the ammonia nitrogen detection component may further comprise a diffusion promoting mechanism to promote diffusion. In one embodiment, the diffusion promoting mechanism is an electromagnetic oscillating member. The diffusion promoting mechanism may be separately provided from the reaction chamber and the liquid storage chamber, or may be provided inside the liquid storage chamber, and operates when the liquid storage chamber 2 and the reaction chamber 1 communicate with each other. When setting up in the stock solution intracavity portion, adopt devices such as inert protective sheath according to the circumstances to avoid the diffusion promotes the reaction of mechanism and the inside reactant in stock solution intracavity portion.
As shown in FIG. 1a, the stop member 5 is at a low position to isolate the reaction chamber 1 from the reservoir chamber 2, and as shown in FIG. 1b, the stop member 5 is at a high position to connect the reaction chamber 1 and the reservoir chamber 2. In the service process of the ammonia nitrogen detection component, the stop piece 5 reciprocates along the vertical direction A, so that the reaction cavity 1 and the liquid storage cavity 2 are circularly in a communicated state and an isolated state.
As shown in FIG. 1c, an electrical connection path 9 may be provided between the reaction chamber 1 and the reservoir chamber 2, the electrical connection path 9 being used to pass an electrical wire 91 connected to the electrode 6.
The reaction chamber 1 may be provided with an exhaust port, which may be formed, for example, by the end of the above-described electrical connection channel 9, for exhausting hydrogen gas generated by the reaction in the reaction chamber 1. When the volume of the reaction chamber 1 is small, the air input is limited, and most of the generated hydrogen can be dispersed in the reaction reagent. When the volume of the reaction chamber 1 is larger, the amount of generated hydrogen is larger, and the hydrogen generated by the reaction can be discharged through an exhaust port (an electric connection channel), so that the obvious increase of the air pressure in the reaction chamber 1 is avoided.
In the modification of the present embodiment, the reaction chamber 1 may be directly butted with the liquid storage chamber 2, that is, the communication passage 4 is not provided, and the stopping member 5 may be a cover perpendicular to the up-down direction a, so that the stopping member 5 may cover the upper end of the reaction chamber 1 to isolate the reaction chamber 1 from the liquid storage chamber 2.
Set up reaction chamber 1 and stock solution chamber 2 in upper and lower direction A, be favorable to reducing the radial size of ammonia nitrogen detection part.
The stopping member 5 may be disposed in the liquid storage cavity 2, and the material of the stopping member 5, the reaction cavity 1 and the liquid storage cavity 2 may be a material having resistance to acid, such as polyethylene, polytetrafluoroethylene, polyvinyl chloride or polypropylene.
Furthermore, the material of the stop 5 may be a relatively low density, soft material, such as thermoplastic polyurethane elastomer rubber, thermoplastic elastomer material or rubber (excluding silicone rubber), etc.
As shown in fig. 2a and fig. 2b, in another embodiment of the ammonia nitrogen detection component provided in the present disclosure, the structure of the ammonia nitrogen detection component is similar to that of the ammonia nitrogen detection component in the above-mentioned embodiment, and the differences mainly include the following aspects.
It should be noted that the "radial direction" of the functional chamber 3 is the same as the "radial direction" of the reaction chamber 1 as described below.
The ammonia nitrogen detection part also comprises a functional cavity 3, the functional cavity 3 is used for installing the electronic part of the ammonia nitrogen detection part, the functional cavity 3 can be positioned above the reaction cavity 1, and the liquid storage cavity 2 can be positioned at the radial outer side of the reaction cavity 1 and the functional cavity 3. Specifically, the reservoir chamber 2 may surround the peripheries of the reaction chamber 1 and the function chamber 3, and the cross section (a section perpendicular to the up-down direction a) of the reservoir chamber 2 is annular. The reaction chamber 1 can be directly butted (communicated) with the reservoir chamber 2 in the radial direction thereof without passing through the communication passage 4.
The detection end of the electrode 6 is located in the reaction chamber 1 and a connector electrically connected to the outside may be located in the function chamber 3. Set up function chamber 3 and reaction chamber 1 according to above-mentioned position relation, can make full use of ammonia nitrogen detection part's inner space, be favorable to making ammonia nitrogen detection part miniaturized and simplify the electricity connection design of electrode 6.
The ammonia nitrogen detection part also comprises an electric valve, the electric control device controls the electric valve, and the electric valve comprises a stop piece 5 which can reciprocate along the vertical direction A. The reaction chamber 1 is axial in the vertical direction a, and the stopping member 5 may be a plate body surrounding the reaction chamber 1.
The embodiment of the electromagnetic valve matched with the communication passage 4 has lower positioning requirement and is more beneficial to mechanical realization.
As shown in fig. 2a, the stopping member 5 is at a low position to isolate the reaction chamber 1 from the reservoir 2, and as shown in fig. 2b, the stopping member 5 is at a high position to communicate the reaction chamber 1 with the reservoir 2. In the service process of the ammonia nitrogen detection component, the stop piece 5 reciprocates along the vertical direction A, so that the reaction cavity 1 and the liquid storage cavity 2 are circularly in a communicated state and an isolated state.
In a variation of this embodiment, the height (dimension in the vertical direction a) of the reservoir 2 may also be less than or equal to the height of the reaction chamber 1, so that the reservoir 2 still surrounds the reaction chamber 1 at the radial outer side of the reaction chamber 1, but does not surround the functional chamber 3.
In the above-described embodiments, the reservoir 2 is located at the radial outer side (including the radial outer side or the radial inclined outer side) of the reaction chamber 1, and in other embodiments, the reservoir 2 may also be located at other orientations of the reaction chamber 1.
In other embodiments, the lower end (the end for receiving ammonia gas) of the reaction chamber 1 may be designed to be a horn shape, so that ammonia gas can be more conveniently received.
It should be understood that in other embodiments provided by the present disclosure, a plurality (two or more) of reaction chambers 1 may be provided, so that a plurality of results tested by the plurality of reaction chambers 1 can be used for mutual verification, and the accuracy of the test is enhanced.
It should be understood that the above-described embodiments are exemplary only, and are not intended to limit the present disclosure. Various modifications and alterations of the above-described embodiments may be made by those skilled in the art in light of the teachings of this disclosure, without departing from the scope of this disclosure.
Claims (11)
1. The utility model provides an ammonia nitrogen detects part, includes reaction chamber (1), reaction chamber (1) is arranged in holding the ammonia in the reactant and the sample that awaits measuring of receipt, the ammonia can with the reactant reaction, its characterized in that:
the ammonia nitrogen detection part further comprises a liquid storage cavity (2), the liquid storage cavity (2) is used for storing the reaction reagent, the liquid storage cavity (2) and the reaction cavity (1) can be communicated or isolated controllably, so that when the reaction reagent in the reaction cavity (1) reacts to a preset degree, the liquid storage cavity (2) supplies the reaction reagent stored in the reaction cavity (1).
2. Ammonia nitrogen detection component according to claim 1, characterized in that it comprises a solenoid valve which can connect or isolate the reaction chamber (1) and the liquid storage chamber (2).
3. Ammonia nitrogen detection component according to claim 1, wherein the liquid storage cavity (2) is located above the reaction cavity (1), the lower end of the reaction cavity (1) is used for receiving the ammonia gas, and the upper end of the reaction cavity (1) is used for receiving the reaction reagent in the liquid storage cavity (2).
4. An ammonia nitrogen detection component according to claim 3, characterized in that the component comprises a stopping piece (5) and a communication passage (4) between the reaction chamber (1) and the liquid storage chamber (2), the stopping piece (5) can move back and forth to enter and exit the communication passage (4), and the communication passage (4) is matched with the stopping piece (5) in shape, so that the stopping piece (5) can block the communication passage (4).
5. Ammonia nitrogen detection part according to claim 1, characterized in that the lower end of the reaction chamber (1) is used for receiving ammonia gas, and the reservoir chamber (2) is located radially outside the reaction chamber (1), so that the reaction chamber (1) can be communicated or isolated from the reservoir chamber (2) in the radial direction thereof.
6. The ammonia nitrogen detection component according to claim 5, comprising a stopping member (5) capable of reciprocating along the vertical direction (A) of the reaction chamber (1), wherein the stopping member (5) is communicated with or separates the reaction chamber (1) and the liquid storage chamber (2), and the stopping member (5) is an annular plate body which surrounds the reaction chamber (1) for one circle.
7. Ammonia nitrogen detection component according to claim 5, characterized in that the component comprises a functional cavity (3) for mounting electronic components and an electrode (6) for detection, wherein the functional cavity (3) is positioned above the reaction cavity (1), the electrode (6) is connected with the electronic components in the functional cavity (3), and the detection end of the electrode (6) is positioned in the reaction cavity (1).
8. Ammonia nitrogen detection component according to claim 1, characterized in that the volume of the liquid storage cavity (2) is more than 50 times the volume of the reaction cavity (1).
9. Ammonia nitrogen detection component according to claim 1, wherein the reaction chamber (1) has a volume of 0.1ml to 2ml, and the reservoir chamber (2) has a volume of 50ml to 500 ml.
10. The ammonia nitrogen detection component according to claim 1, comprising an electrode (6) for detection, wherein the detection end of the electrode (6) is located in the reaction chamber (1), and the electrode (6) is used for detecting the pH value and/or the conductivity of the reaction reagent.
11. Ammonia nitrogen detection equipment, characterized in that, the ammonia nitrogen detection equipment includes according to any one of claims 1-10 ammonia nitrogen detection part.
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| CN202010960744.3A CN114184649A (en) | 2020-09-14 | 2020-09-14 | Ammonia nitrogen detection part and ammonia nitrogen detection equipment |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11118782A (en) * | 1997-10-09 | 1999-04-30 | Dkk Corp | Ammoniacal nitrogen measuring apparatus |
| CN205506750U (en) * | 2016-03-01 | 2016-08-24 | 江西怡杉环保股份有限公司 | A electrode for ammonia nitrogen on -line monitoring |
| CN205643138U (en) * | 2016-02-29 | 2016-10-12 | 上海祎鸿分析仪器有限公司 | A reaction cup for full -automatic kieldahl azotometer of colouring |
| US20180348164A1 (en) * | 2017-05-31 | 2018-12-06 | Northeastern University | Forward Osmosis Coupled Electrochemical Sensor |
| CN109085214A (en) * | 2018-09-27 | 2018-12-25 | 湖北皓晟农业科技股份有限公司 | A kind of ammonia nitrogen water quality analyzer |
| CN110451734A (en) * | 2019-08-27 | 2019-11-15 | 象山泛海环保科技有限责任公司 | A kind of filter of ammonia-nitrogen sewage processing |
| CN210894122U (en) * | 2019-09-19 | 2020-06-30 | 无锡海韵体育发展有限公司 | Swimming pool water urea detection device |
| CN111420528A (en) * | 2020-05-13 | 2020-07-17 | 北京华创瑞风空调科技有限公司 | Ammonia removal system |
| CN111607506A (en) * | 2020-06-11 | 2020-09-01 | 上海前瞻创新研究院有限公司 | Thin film type nucleic acid amplification micro-fluidic chip and preparation and application method thereof |
-
2020
- 2020-09-14 CN CN202010960744.3A patent/CN114184649A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11118782A (en) * | 1997-10-09 | 1999-04-30 | Dkk Corp | Ammoniacal nitrogen measuring apparatus |
| CN205643138U (en) * | 2016-02-29 | 2016-10-12 | 上海祎鸿分析仪器有限公司 | A reaction cup for full -automatic kieldahl azotometer of colouring |
| CN205506750U (en) * | 2016-03-01 | 2016-08-24 | 江西怡杉环保股份有限公司 | A electrode for ammonia nitrogen on -line monitoring |
| US20180348164A1 (en) * | 2017-05-31 | 2018-12-06 | Northeastern University | Forward Osmosis Coupled Electrochemical Sensor |
| CN109085214A (en) * | 2018-09-27 | 2018-12-25 | 湖北皓晟农业科技股份有限公司 | A kind of ammonia nitrogen water quality analyzer |
| CN110451734A (en) * | 2019-08-27 | 2019-11-15 | 象山泛海环保科技有限责任公司 | A kind of filter of ammonia-nitrogen sewage processing |
| CN210894122U (en) * | 2019-09-19 | 2020-06-30 | 无锡海韵体育发展有限公司 | Swimming pool water urea detection device |
| CN111420528A (en) * | 2020-05-13 | 2020-07-17 | 北京华创瑞风空调科技有限公司 | Ammonia removal system |
| CN111607506A (en) * | 2020-06-11 | 2020-09-01 | 上海前瞻创新研究院有限公司 | Thin film type nucleic acid amplification micro-fluidic chip and preparation and application method thereof |
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