CN209264712U - A kind of NH3-N ammonia nitrogen determination instrument - Google Patents
A kind of NH3-N ammonia nitrogen determination instrument Download PDFInfo
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- CN209264712U CN209264712U CN201822140403.2U CN201822140403U CN209264712U CN 209264712 U CN209264712 U CN 209264712U CN 201822140403 U CN201822140403 U CN 201822140403U CN 209264712 U CN209264712 U CN 209264712U
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- casing
- electromagnet
- air inlet
- closed plate
- air outlet
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Abstract
The utility model relates to water quality parameter determining instruments, in particular to a kind of NH3-N ammonia nitrogen determination instrument, to solve the problems, such as that accumulating dust in prior art Instrumental influences measurement accuracy, the utility model includes casing, its drip irrigation device is to offer air inlet and air outlet respectively on the casing, the closed component for being respectively used to opening and closing air inlet and air outlet is provided on the casing, and it is provided in the casing for detecting temperature in casing and controlling the control assembly of closed component opening and closing, the heat emission fan for being covered in air outlet and being controlled by control assembly is installed on the casing, the temperature in casing is detected by control assembly, and realize that the opening and closing to air inlet and air outlet on casing controls by closed component, and closed component and heat emission fan are controlled by control assembly, while the heat dissipation for reaching casing, The closing to casing is realized when shell temperature is lower, improves the measurement accuracy of instrument.
Description
Technical field
The utility model relates to water quality parameter determining instrument, in particular to a kind of NH3-N ammonia nitrogen determination instrument.
Background technique
In water ammonia nitrogen refer in the form of free ammonia existing for ammonia, be mainly derived from sanitary sewage organic matter containing ammonia by micro- life
The industrial wastewaters and agricultural drain etc. such as decomposition product, the coking synthesis ammonia of object effect.When ammonia-nitrogen content is higher in water, to fish
Toxic action is presented in class, also there is different degrees of harm to the mankind.It is contaminated to facilitate evaluation water body for ammonia-nitrogen content in measurement water
" self-cleaning " situation, because ammonia nitrogen is the important indicator for characterizing water pollution.Currently, the detection of ammonia-nitrogen content is all to pass through ammonia nitrogen
Analyzer is measured.
And ammonia nitrogen determination instrument is during carrying out parametric measurement, due to each component in casing be powered operation when can produce
Heat amount is to affect greatly to the measurement accuracy in detection liquid to prevent continuous raised temperature in casing, usual casing
On can offer thermovent and radiate, but casing internal is connected by thermovent with external environment, be easy to cause dust into
Enter on the proper heat reduction even damage for influencing component on component is piled up in casing in machine in casing, to influence ammonia nitrogen survey
Determine the measurement accuracy of instrument.
Utility model content
The purpose of the utility model is to provide a kind of NH3-N ammonia nitrogen determination instrument, and ash is reduced while reaching heat dissipation effect
The accumulation of dirt improves Instrument measuring precision.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of NH3-N ammonia nitrogen determination instrument, including casing offer air inlet and air outlet on the casing respectively, described
It is provided with the closed component for being respectively used to opening and closing air inlet and air outlet on casing, and is provided in the casing for detection machine
Temperature and the control assembly of closed component opening and closing is controlled in shell, is equipped on the casing and is covered in air outlet and is controlled by control
The heat emission fan of component.
Through the above technical solutions, being detected by control assembly to the temperature in casing, and when the temperature in casing
When higher, control assembly controls closed component and acts exposure air inlet and air outlet, and the current supply circuit of heat emission fan is connected, and passes through
Heat emission fan accelerates casing and external heat exchange, realizes the high efficiency and heat radiation in casing；And when the temperature in casing is lower, control
Component control closed component processed closes air inlet and air outlet, and heat emission fan stops operating, to realize warm in casing
To the sealing in casing when spending lower, reduces dust and enter the accumulation in casing, reach and further increase Instrument measuring precision
Effect.
The utility model is further arranged to: the closed component includes the first closing being slidably connected on casing respectively
The first sheet metal has been respectively fixedly connected on the side wall of plate and the second closed plate, first closed plate and second closed plate
With the second sheet metal, it has been respectively fixedly connected on casing and has driven first for being attracted cooperation with the first sheet metal and the second sheet metal
The first electromagnet and the second electromagnet of closed plate and the second closed plate exposure air inlet and air outlet, and casing is respectively with first
It is provided between closed plate and the second closed plate for driving the first closed plate and the second closed plate closing air inlet and air outlet
First back-moving spring and second back-moving spring.
Through the above technical solutions, when control assembly control closed component acts exposure air inlet and air outlet, conducting
The current supply circuit of first electromagnet and the second electromagnet, the first electromagnet and second the first sheet metal of electromagnetic actuation and the second gold medal
Belong to piece, so that the first closed plate and the second closed plate is driven to slide towards the direction close to the first electromagnet and the second electromagnet, the
Deformation occurs for one reset spring and second back-moving spring, and air inlet and air outlet expose；
When control assembly control closed component closes air inlet and air outlet, the first electromagnet and second is cut off
The reseting elasticity of the current supply circuit of electromagnet, the first closed plate and the second metal plate in first back-moving spring and second back-moving spring
The lower closing that air inlet and air outlet are realized towards the direction sliding far from the first electromagnet and the second electromagnet.
The utility model is further arranged to: first electromagnet and second electromagnet are connected in parallel.
Through the above technical solutions, the first electromagnet and the second electromagnet that are connected in parallel make the control of closed component steady
It is qualitative higher.
The utility model is further arranged to: the filter screen for being covered in air inlet, and the mistake are equipped on the casing
It is fixedly connected with several flat thin magnets on strainer, air inlet is provided with several on the casing and matches with flat thin magnet actuation
The third sheet metal of conjunction.
It was carried out when through the above technical solutions, being entered in casing by outside air of the filter screen after heat emission fan starting
Filter is filtered the air entered in casing, further increases the cleaning in casing；And pass through flat thin magnet and third metal
The cooperation of piece is easy to implement the installation and removal of filter screen, convenient for the cleaning of filter screen.
The utility model is further arranged to: the side wall of the flat thin magnet is concordant with the side wall of the filter screen, and described
The side wall of three sheet metals is concordant with the side wall of the casing.
Through the above technical solutions, the side wall of flat thin magnet is concordant with the side wall of filter screen and third sheet metal and casing
Side wall be concordantly arranged, the gap between filter screen and casing is reduced, to achieve the purpose that improve filter screen filtration efficiency.
The utility model is further arranged to: the control assembly includes:
Temperature sensor is installed in casing, for detecting the temperature in casing, and output temperature detected value；
Comparison circuit is coupled to the output end of temperature sensor to receive temperature detection value, and rear defeated compared with preset value
Comparison signal out；
Execution circuit is coupled to the output end of comparison circuit, for controlling the first electromagnet, the second electromagnet, heat emission fan
The on-off of current supply circuit.
Through the above technical solutions, when comparison circuit receives the temperature detection value of temperature sensor output higher than more electric
When the preset value on road, comparison circuit exports the comparison signal of high level, and execution circuit is in the comparison signal for receiving high level
Be connected the first electromagnet, the second electromagnet, heat emission fan current supply circuit, to realize the heat discharging operation in casing.
The utility model is further arranged to: being fixedly connected on the casing and is covered at the first electromagnet and second respectively
The first protective cover and the second protective cover outside electromagnet.
Through the above technical solutions, reducing dust in the first electromagnet and second by the first protective cover and the second protective cover
Accumulation on electromagnet further increases the service life and stability in use of the first electromagnet and the second electromagnet.
In conclusion the utility model has the following beneficial effects:
(1) temperature in casing is detected by control assembly, and by closed component realize on casing into
The opening and closing of air port and air outlet controls, and closed component and heat emission fan are controlled by control assembly, in the same of the heat dissipation for reaching casing
When, the closing to casing is realized when shell temperature is lower, improves the measurement accuracy of instrument；
(2) the external filtering for entering the air in casing is realized by filter screen, is further reduced dust heap in casing
The generation of long-pending phenomenon；
(3) it is easy to implement the installation and removal of filter screen by the cooperation of flat thin magnet and third sheet metal, is convenient for filter screen
Cleaning.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the present embodiment；
Fig. 2 is the partial structural diagram of the present embodiment；
Fig. 3 is the circuit diagram of control assembly in the present embodiment.
Appended drawing reference: 1, casing；2, air inlet；3, air outlet；4, heat emission fan；5, filter screen；6, mounting groove；7, third gold
Belong to piece；8, mounting hole；9, flat thin magnet；10, closed component；11, control assembly；12, the first slideway；13, the second slideway；14,
One closed plate；15, the first plastic plate；16, the first electromagnet；17, the first protective cover；18, the first sheet metal；19, first resets
Spring；20, third slideway；21, the 4th slideway；22, the second closed plate；23, the second plastic plate；24, the second electromagnet；25,
Two protective covers；26, the second sheet metal；27, second back-moving spring；28, temperature sensor；29, comparison circuit；30, execution circuit.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
A kind of NH3-N ammonia nitrogen determination instrument offers air inlet on the side wall on casing 1 as shown in Figure 1, including casing 1 respectively
Mouth 2 and air outlet 3, air inlet 2 are located at the top of air outlet 3, heat emission fan 4 are fixedly connected on 1 inner wall of casing, and heat emission fan 4 is covered
It is placed on air outlet 3.
It is connected with filter screen 5 on 1 inner wall of casing at air inlet 2, on 1 inner wall of casing of 2 surrounding of air inlet
It opens up there are four mounting groove 6, third sheet metal 7 is installed in each mounting groove 6, the side wall of third sheet metal 7 is interior with casing 1
Wall is concordant, and the mounting hole 8 being correspondingly arranged with four mounting grooves 6, installation in each mounting hole 8 are offered on the side wall of filter screen 5
There is flat thin magnet 9, flat thin magnet 9 and third sheet metal 7 are attracted cooperation and realize installation of the filter screen 5 in casing 1.
And it is provided with to reduce the dust accretions in casing 1, on casing 1 and is respectively used to opening and closing air inlet 2 and air outlet 3
Closed component 10 and for detecting temperature in casing 1 and controlling the control assembly 11 of the opening and closing of closed component 10.
As shown in Fig. 2, closed component 10 include be symmetrical arranged along the horizontal plane with the first slideway 12 of 2 upper and lower of air inlet and
The vertical section of second slideway 13, the first slideway 12 and the second slideway 13 is " L " type, and 1 outer wall of casing slidably connects the first envelope
Closing plate 14, the first closed plate 14 is connected to the first slideway 12 and the second slideway 13, and the first closed plate 14 is for controlling air inlet 2
Opening and closing.
The first plastic plate 15, side wall of first plastic plate 15 close to the first closed plate 14 are fixedly connected on 1 outer wall of casing
On be fixedly connected with the first electromagnet 16, and be fixedly connected on the first plastic plate 15 outside the first electromagnet 16 first protect
Shield 17, the first closed plate 14 are fixedly connected with the first sheet metal 18, the first sheet metal on the side wall of the first electromagnet 16
18 cooperate for being attracted with the first electromagnet 16.
And first is fixedly connected between plastic plate 15 and the first closed plate 14 there are two first back-moving spring 19, two first
Reset spring 19 is located above and below the first electromagnet 16.
Symmetrically arranged 20 He of third slideway in the horizontal direction is fixedly connected on 1 outer wall of casing of 3 upper and lower of air outlet
The vertical section of 4th slideway 21, third slideway 20 and the 4th slideway 21 is " L " type, and 1 outer wall of casing slidably connects the second envelope
Closing plate 22, the second closed plate 22 is connected to third slideway 20 and the 4th slideway 21, and the second closed plate 22 is for controlling air outlet 3
Opening and closing.
The second plastic plate 23, side wall of second plastic plate 23 close to the second closed plate 22 are fixedly connected on 1 outer wall of casing
On be fixedly connected with the second electromagnet 24, the second electromagnet 24 is connected in parallel with the first electromagnet 16.And second on plastic plate 23
The second protective cover 25 being fixedly connected with outside the second electromagnet 24, side wall of second closed plate 22 close to the second electromagnet 24
On be fixedly connected with the second sheet metal 26, the second sheet metal 26 is used for and the second electromagnet 24 is attracted and cooperates.
And second is fixedly connected between plastic plate 23 and the second closed plate 22 there are two second back-moving spring 27, two second
Reset spring 27 is located above and below the second electromagnet 24.
As shown in figures 1 and 3, control assembly 11 includes:
Temperature sensor 28 is installed on 1 inner wall of casing, for detecting the temperature in casing 1, and output temperature detected value；
Comparison circuit 29 is coupled to the output end of temperature sensor 28 to receive temperature detection value, and compared with preset value
After export comparison signal；
Execution circuit 30 is coupled to the output end of comparison circuit 29, for controlling the first electromagnet 16, the second electromagnet
24, the on-off of 4 current supply circuit of heat emission fan.
Comparison circuit 29 includes comparator A, resistance R1 and resistance R2, and the in-phase end of comparator A is coupled to temperature sensor
28 output end, resistance R1 are serially connected between the reverse side of comparator A and direct current VCC, and resistance R2 is serially connected with the anti-of comparator A
Between phase end and ground, the voltage value at the both ends resistance R2 is the preset value of comparison circuit 29.
Execution circuit 30 includes triode Q1, sustained diode 1, relay KM1.Triode Q1 base stage, which is coupled to, to be compared
The output end of device A, the emitter ground connection of triode Q1, relay KM1 have coil and normally open contact, the coil of relay KM1
Be serially connected between the collector of triode Q1 and direct current VCC, the normally open contact of relay KM1 be serially connected with the first electromagnet 16,
Second electromagnet 24, heat emission fan 4 current supply circuit in, the anode of sustained diode 1 is coupled to the collector of triode Q1, continue
The cathode of stream diode D1 is coupled to direct current VCC.
The course of work:
When the temperature detection value that comparison circuit 29 receives the output of temperature sensor 28 is higher than the preset value of comparison circuit 29
When, comparison circuit 29 exports the comparison signal of high level, triode Q1 conducting in the comparison signal for receiving high level, relay
The coil of device KM1 obtains electric, the normally open contact closure of relay KM1, the confession of the first electromagnet 16, the second electromagnet 24, heat emission fan 4
Electrical circuit conducting, the first electromagnet 16 and the second electromagnet 24 are attracted the first sheet metal 18 and the second sheet metal 26, to drive
First closed plate 14 and the second closed plate 22 are slided towards the direction close to the first electromagnet 16 and the second electromagnet 24, and first resets
Compressional deformation occurs for spring 19 and second back-moving spring 27, and air inlet 2 and air outlet 3 expose；
When temperature sensor 28 detects that the temperature in casing 1 is lower than the preset value of comparison circuit 29, comparator output
Low level comparison signal, triode Q1 are in off state, the coil losing electricity of relay KM1, and relay KM1 normally open contact breaks
The current supply circuit of cutting the first electromagnet 16 and the second electromagnet 24, the first closed plate 14 and the second metal plate is opened to reset first
It is slided under spring 19 and the reseting elasticity of second back-moving spring 27 towards the direction far from the first electromagnet 16 and the second electromagnet 24
To realize the closing of air inlet 2 and air outlet 3, first back-moving spring 19 and second back-moving spring 27 restore former length.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (7)
1. a kind of NH3-N ammonia nitrogen determination instrument, including casing (1), it is characterised in that: offer air inlet respectively on the casing (1)
Mouthful (2) and air outlet (3) is provided with the closed group for being respectively used to open and close air inlet (2) and air outlet (3) on the casing (1)
Part (10), and the interior control being provided with for detecting the interior temperature of casing (1) and controlling closed component (10) opening and closing of the casing (1)
Component (11) is equipped with the heat emission fan (4) for being covered in air outlet (3) and being controlled by control assembly (11) on the casing (1).
2. a kind of NH3-N ammonia nitrogen determination instrument according to claim 1, it is characterised in that: the closed component (10) includes
The first closed plate (14) and the second closed plate (22) being slidably connected on casing (1) respectively, first closed plate (14) and
The first sheet metal (18) and the second sheet metal (26), casing have been respectively fixedly connected on the side wall of second closed plate (22)
(1) it has been respectively fixedly connected on and has driven the first closed plate for being attracted cooperation with the first sheet metal (18) and the second sheet metal (26)
(14) and the second closed plate (22) exposure air inlet (2) and air outlet (3) the first electromagnet (16) and the second electromagnet (24),
And casing (1) is provided with respectively for driving the first closed plate (14) between the first closed plate (14) and the second closed plate (22)
With the first back-moving spring (19) and second back-moving spring (27) of the second closed plate (22) closing air inlet (2) and air outlet (3).
3. a kind of NH3-N ammonia nitrogen determination instrument according to claim 2, it is characterised in that: first electromagnet (16) and
Second electromagnet (24) is connected in parallel.
4. a kind of NH3-N ammonia nitrogen determination instrument according to claim 1, it is characterised in that: be equipped with and cover on the casing (1)
It is placed on the filter screen (5) of air inlet (2), and is fixedly connected with several flat thin magnets (9), the casing on the filter screen (5)
(1) several third sheet metals (7) that cooperation is attracted with flat thin magnet (9) are provided at air inlet (2).
5. a kind of NH3-N ammonia nitrogen determination instrument according to claim 4, it is characterised in that: the side wall of the flat thin magnet (9) with
The side wall of the filter screen (5) is concordant, and the side wall of the third sheet metal (7) is concordant with the side wall of the casing (1).
6. a kind of NH3-N ammonia nitrogen determination instrument according to claim 2, it is characterised in that: the control assembly (11) includes:
Temperature sensor (28) is installed in casing (1), for detecting the temperature in casing (1), and output temperature detected value；
Comparison circuit (29) is coupled to the output end of temperature sensor (28) to receive temperature detection value, and compared with preset value
After export comparison signal；
Execution circuit (30), is coupled to the output end of comparison circuit (29), for controlling the first electromagnet (16), the second electromagnet
(24), the on-off of heat emission fan (4) current supply circuit.
7. a kind of NH3-N ammonia nitrogen determination instrument according to claim 2, it is characterised in that: be fixedly connected on the casing (1)
Have and covers at the first protective cover (17) and the second protective cover (25) of the first electromagnet (16) and the second electromagnet (24) outside respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822140403.2U CN209264712U (en) | 2018-12-19 | 2018-12-19 | A kind of NH3-N ammonia nitrogen determination instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822140403.2U CN209264712U (en) | 2018-12-19 | 2018-12-19 | A kind of NH3-N ammonia nitrogen determination instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209264712U true CN209264712U (en) | 2019-08-16 |
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ID=67560215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822140403.2U Active CN209264712U (en) | 2018-12-19 | 2018-12-19 | A kind of NH3-N ammonia nitrogen determination instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209264712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236074A (en) * | 2021-12-07 | 2022-03-25 | 深圳市索奥检测技术有限公司 | Water environment detection device |
-
2018
- 2018-12-19 CN CN201822140403.2U patent/CN209264712U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236074A (en) * | 2021-12-07 | 2022-03-25 | 深圳市索奥检测技术有限公司 | Water environment detection device |
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