CN209264406U - A kind of Accuracy of Permanganate Index Determination resolution instrument - Google Patents
A kind of Accuracy of Permanganate Index Determination resolution instrument Download PDFInfo
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- CN209264406U CN209264406U CN201822142120.1U CN201822142120U CN209264406U CN 209264406 U CN209264406 U CN 209264406U CN 201822142120 U CN201822142120 U CN 201822142120U CN 209264406 U CN209264406 U CN 209264406U
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Abstract
The utility model relates to field of water quality detection, more specifically, it is related to a kind of Accuracy of Permanganate Index Determination resolution instrument, when aiming to solve the problem that Accuracy of Permanganate Index Determination, the excessive problem of labor intensive, its key points of the technical solution are that: including body, it is connected to body and connects multiple carrying apparatus of sample, the temperature sensor of test sample temperature, it is connected in body and is connected to the heating device of objective table, it is connected to the intracorporal timer of machine, it is connected to body and is coupled to the alarm set of timer, according to the control circuit of the actuated signal control heating device of temperature sensor and timer and alarm set work.The utility model passes through the design of temperature sensor and heating device, enables sample during heating by real-time detection temperature, to achieve the purpose that accurately to heat.
Description
Technical field
The utility model relates to field of water quality detection, more specifically, it relates to which a kind of Accuracy of Permanganate Index Determination is cleared up
Instrument.
Background technique
Permanganate index refers under certain condition with certain organic matters in potassium permanganate oxidation water sample and inorganic
Oxidizable substance calculates comparable oxygen amount by the potassium permanganate amount consumed, indicates that unit is the concentration (mg/L) of oxygen, with IMn table
Show, also known as COD (manganese method), i.e. COD (Mn).
Permanganate index is the common counter for reflecting organic and inorganic oxidizable substance pollution in water body, but be cannot function as
The index of theoretical oxygen demand or total organic content, because many organic matters can only be partly oxidized under the defined conditions,
Volatile organic matter is also not included within measured value.
Permanganate index can reflect in cleaning and relatively cleaning water body to a certain extent by organic and inorganic oxidable object
The degree of matter pollution, permanganate index are often polluted as measurement surface water body by organic pollutant and reducing inorganic substance
One important indicator of degree, often by one of the required test item as Monitoring And Analysis of The Quality.
But using in national standard (GB/T11892-1989) when titration measuring permanganate index, often heating water bath
Overlong time, sample need heating 30min in boiling water；It is not intuitive whether observation water-bath boils, and has subjectivity；Water-bath boiling temperature
By such environmental effects, heating temperature does not reach requirement degree, and it is relatively low to directly result in measurement result.Both elapsed time in this way, adds
The thermal efficiency is low, and influences the repeatability of experimental data, and situation is more prominent when especially having batch samples to need to analyze, therefore
Need to propose the new scheme of one kind to solve this problem.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of Accuracy of Permanganate Index Determination to disappear
Xie Yi enables sample during heating by real-time detection temperature by the design of temperature sensor and heating device, from
And achieve the purpose that accurately to heat.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of permanganate index
Measurement resolution instrument, including body, the temperature sensing for being connected to body and connecting multiple carrying apparatus of sample, test sample temperature
Device is connected in body and is connected to the heating device of objective table, is connected to the intracorporal timer of machine, is connected to body and coupling
It works in the alarm set of timer, according to the actuated signal control heating device and alarm set of temperature sensor and timer
Control circuit.
Sample is carried by carrying apparatus, later on timer heats sample by heating device, and uses
Temperature sensor carries out real-time monitoring to temperature, keeps the temperature in preset range；
After the preset time of timer has arrived, heater stop heating, and by alarm set to staff
It is reminded.
The utility model is further arranged to: the carrying apparatus includes spaced multiple loading slots, sample insertion
In loading slot；Heating device uses resistive heater, and heating device is filled between loading slot.
Carrying apparatus be equipped with it is multiple, while loading slot be equipped with it is multiple, with meet multiple samples simultaneously resolution the needs of；
Heating device is filled between loading slot, and sample is inserted into loading slot, to come into full contact with heating device, is reached
Better heating effect.
The utility model is further arranged to: the closing cap of closing carrying apparatus, closing cap card are connected on the body
It is connected on body.
By the design of closing cap, so that not occurring to interfere relatively between multiple carrying apparatus, sample is prevented when heated
Heated spalling, damages staff；
Meanwhile it is in carrying apparatus in a degree of sealing state, keep heating effect more preferable.
The utility model is further arranged to: the control circuit includes:
Detection circuit is coupled to temperature sensor, timer to receive inductive signal, and issues detection signal；
Comparison circuit is coupled to the output end of detection circuit to receive detection signal and export comparison signal；
Execution circuit, be coupled to comparison circuit and according to comparison signal control heating device, alarm set whether it is electric.
By using above-mentioned technical proposal, enable detection circuit to the unlike signal of temperature sensor, timer into
Row processing, to realize the control to heating device, alarm set.
The utility model is further arranged to: the comparison circuit, including,
First comparing section is coupled to detection circuit to receive detection signal, and will test signal and the progress of the first preset value
After export first control signal；
Second comparing section is coupled to detection circuit to receive detection signal, and will test signal and the progress of the second preset value
After export second control signal.
First preset value is preset temperature value, when being lower than preset temperature value, heating device continuous heating；
Second preset value is preset time value, and in not up to preset time value, the second comparing section is not turned on.
The utility model is further arranged to: the execution circuit includes,
First control units is coupled to the first comparing section to receive first control signal, when the inductive signal of temperature sensor
When lower than the first preset value, first control units makes heating device obtain electric and is kept as electricity condition；
Second control unit is coupled to the second comparing section to receive second control signal, when the inductive signal of timer is greater than
After second preset value, the second control unit powers off first control units and alarm set is made to remain powered on state.
By using above-mentioned technical proposal, when the inductive signal of temperature sensor is lower than the first preset value, heating device
It continues working；
After the inductive signal of timer is greater than the second preset value, preset time is had reached, at this time stops heating device
It only heats, while triggering alarm set.
The utility model is further arranged to: the first control units includes:
5th resistance, one end are coupled to the first comparing section；
First triode, emitter ground connection, base stage are coupled to the other end of the 5th resistance；
6th resistance, one end are coupled to the tie point of the 5th resistance and the first transistor base, and the other end is coupled to first
The tie point of triode and ground；
9th resistance, one end are coupled to direct current, and the other end is coupled to the collector of the first triode；
First relay, including coil, the first normally opened contact switch, coil one end are coupled to the 9th resistance and direct current
Tie point, the other end of coil are coupled to the tie point of the 9th resistance and the first triode, the first normally opened contact switch and heating
Device coupling.
By using above-mentioned technical proposal, the first relay is connected first control signal, to make the first normally opened contact
It closes the switch, so that heating device obtains electric, works.
The utility model is further arranged to: second control unit includes,
7th resistance is coupled to the second comparing section；
Second triode, base stage are coupled to the 7th resistance, emitter ground connection；
8th resistance, one end are coupled to the tie point of the 7th resistance and the second transistor base, and the other end is coupled to second
The tie point of triode and ground；
Second relay, including the second normally opened contact switch, coil, the first normally-closed contact switch, one end coupling of coil
In direct current, the other end of coil is coupled to the collector of the second triode, and the second normally opened contact switch and alarm set couple,
First normally-closed contact switch is coupled between the first normal open switch and heating device.
By using above-mentioned technical proposal, the second triode ON is made the second relay by the second control signal of output
First normally-closed contact of work, the second relay disconnects, and first control units is made not restart heating device work；Second often simultaneously
Contact switch closure is opened, alarm set is made to work.
In conclusion the utility model has the following beneficial effects:
First, passing through the design of temperature sensor and heating device, sample is examined in real time during heating
Testing temperature, to achieve the purpose that accurately to heat；
Second, pass through the design of alarm set and timer, so that staff can be reminded after heating,
Without being guarded by instrument always.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment one；
Fig. 2 is the circuit diagram of control circuit.
In figure: 1, body；11, display screen；2, carrying apparatus；21, loading slot；3, heating device；4, timer；5, temperature
Sensor；6, alarm set；7, closing cap；71, kerve；1000, control circuit；100, detection circuit；200, comparison circuit；
201, the first comparing section；202, the second comparing section；300, execution circuit；301, first control units；302, the second control unit；R1,
First resistor；R2, second resistance；R3,3rd resistor；R4, the 4th resistance；R5, the 5th resistance；R6, the 6th resistance；R7, the 7th
Resistance；R8, the 8th resistance；R9, the 9th resistance；A, first comparator；B, the second comparator；Q1, the first triode；Q2, second
Triode；KM2, the second relay；KM1, the first relay；KM2-1, the second normally opened contact switch；KM2-2, the first normally closed touching
Point switch；KM1-1, the first normally opened contact switch.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
Embodiment one: a kind of Accuracy of Permanganate Index Determination clears up instrument, as shown in Figure 1 and Figure 2, including body 1, is connected to machine
Two carrying apparatus 2 of body 1 and connection sample are connected to carrying apparatus 2 with the temperature sensor 5 of test sample temperature, connection
In in body 1 and being connected to the heating device 3 of objective table, the timer 4 being connected in body 1, be connected to body 1 and be coupled to
The alarm set 6 of timer 4, actuated signal control heating device 3 and alarm set 6 according to temperature sensor 5 and timer 4
The control circuit 1000 of work.When needing to heat, start heating device 3 to heat to carrying apparatus 2, while passing through temperature
Degree sensor 5 adjusts the heating effect of heating device 3 in real time, so that the sample for being connected to carrying apparatus 2 is stablized
Heating.
The display screen 11 for being coupled to control circuit 1000 is additionally provided on body 1, to show real time temperature, heating duration.
As shown in Figure 1, each carrying apparatus 2 includes spaced multiple loading slots 21, sample is packed into test tube, and will
Test tube is inserted into loading slot 21, to realize the loading to sample；Heating device 3(Fig. 2) use resistive heater, heating device
3 are filled between loading slot 21, to adequately contact heating with the test tube equipped with sample.
The closing cap 7 of closing carrying apparatus 2 is also rotatably connected on body 1, closing cap 7 is connected on body 1, to make
Do not occur to interfere relatively between two carrying apparatus 2, prevents sample heated spalling when heated, staff is damaged；
Meanwhile it is in carrying apparatus 2 in a degree of sealing state, keep heating effect more preferable.It is additionally provided with just at the top of closing cap 7
In the kerve 71 that closing cap 7 is opened.
Embodiment two: a kind of Accuracy of Permanganate Index Determination resolution instrument, as shown in Fig. 2, the difference from embodiment 1 is that:
Alarm set 6 uses flash for prompting lamp, and control circuit 1000 includes being coupled to temperature sensor 5, timer 4 to receive induction letter
Number and issue detection signal detection circuit 100, be coupled to detection circuit 100 comparison circuit 200, be coupled to comparison circuit
200 execution circuit 300.
Comparison circuit 200 includes the first comparing section 201, the second comparing section 202.
First comparing section 201 includes first resistor R1, second resistance R2, first comparator A, the coupling of the one end first resistor R1
In direct current, the first resistor R1 other end is coupled to the one end second resistance R2, second resistance R2 other end ground connection, first comparator
A reverse side is coupled to the tie point of first resistor R1 and second resistance R2 to receive the first preset value, and the first preset value is default
Temperature value, when being lower than preset temperature value, 3 continuous heating of heating device；First comparator A reverse side is coupled to temperature sensor
5 to receive detection signal.
Second comparing section 202 includes 3rd resistor R3, the 4th resistance R4, the second comparator B, the coupling of the one end 3rd resistor R3
In direct current, the 3rd resistor R3 other end is coupled to the 4th one end resistance R4, the 4th resistance R4 other end ground connection, the second comparator
B positive terminal is coupled to the tie point of 3rd resistor R3 and the 4th resistance R4 to receive the second preset value, and the second preset value is default
Time value, in not up to preset time value, the second comparing section 202 is not turned on；Second comparator B reverse side is coupled to timer
4 to receive detection signal.
Execution circuit 300 includes first control units 301, the second control unit 302.
First control units 301 include the 5th resistance R5, the 6th resistance R6, the first triode Q1, the 9th resistance R9, first after
Electric appliance KM1, one end of the 5th resistance R5 are coupled to first comparator A output end, and the other end of the 5th resistance R5 is coupled to first
Triode Q1 base stage；The collector of first triode Q1 is coupled to the second relay KM2, and the emitter of the first triode Q1 connects
Ground.
6th one end resistance R6 is coupled to the tie point of the 5th resistance R5 and the first triode Q1 base stage, and the 6th resistance R6 is another
One end is coupled to the tie point of the first triode Q1 and ground.
9th resistance R9, one end are coupled to direct current, and the other end is coupled to the collector of the first triode Q1.
First relay KM1, including coil, the first normally opened contact switch KM1-1, coil one end is coupled to the 9th resistance R9
With the tie point of direct current, the other end of coil is coupled to the tie point of the 9th resistance R9 and the first triode Q1, and first is normally opened
Contact switch KM1-1 and heating device 3 couple.
Second control unit 302 includes the 7th resistance R7, the 8th resistance R8, the second triode Q2, the second relay KM2, continues
Diode is flowed, the 7th one end resistance R7 is coupled to one end and is coupled to the second comparator B output end, the coupling of the 7th resistance R7 other end
In the second triode Q2 base stage；The collector of second triode Q2 is coupled to the second relay KM2, the transmitting of the second triode Q2
Pole ground connection.
8th one end resistance R8 is coupled to the tie point of the 7th resistance R7 and the second triode Q2 base stage, and the other end is coupled to
The tie point of second triode Q2 and ground；Second relay KM2 is coupled to direct current, and the second relay KM2 includes being coupled to mention
Second normally opened contact switch KM2-1, the second normally opened contact switch KM2-1 of awake device 6 is connected to ground；Second relay KM2 is also
Including the first normally-closed contact switch KM2-2 being coupled between the first normally opened contact switch KM1-1 and heating device 3.Afterflow two
Pole pipe one end is coupled to the tie point of the second relay KM2 and the second triode Q2 collector, the coupling of the freewheeling diode other end
In the tie point of the second relay KM2 and ground.
The course of work: after sample is loaded into carrying apparatus 2, first by 5 test sample temperature of temperature sensor, and
Sample heating time is controlled by timer 4；
When temperature is lower than preset temperature, by the signal processing to temperature sensor 5, emit in the first comparing section 201
First normally opened contact switch KM1-1 is closed by first control signal, the first relay KM1, to make direct current, the first normally opened touching
Point switch KM1-1, heating device 3, the first normally-closed contact switch KM2-2 are electrically connected, and are finally grounded, so that heating device 3 works；
After timer 4 reaches preset time, the second comparing section 202 emits second control signal, so that the second relay
KM2 starting, so that the first normally-closed contact switch KM2-2 be made to disconnect, heating device 3 is powered off；Meanwhile second normally opened contact switch
KM2-1 closure is finally grounded, so that the second normally opened contact switch KM2-1 closure, alarm set 6 are electrically connected so that alarm set 6
Work.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of Accuracy of Permanganate Index Determination clears up instrument, it is characterised in that: including body (1), be connected to body (1) and connection sample
Multiple carrying apparatus (2) of product, test sample temperature temperature sensor (5), be connected in body (1) and be connected to objective table
Heating device (3), be connected to the intracorporal timer of machine (4), be connected to body (1) and be coupled to timer (4) prompting dress
It sets (6), worked according to the actuated signal control heating device (3) of temperature sensor (5) and timer (4) and alarm set (6)
Control circuit (1000).
2. a kind of Accuracy of Permanganate Index Determination according to claim 1 clears up instrument, it is characterised in that: the carrying apparatus
It (2) include spaced multiple loading slots (21), sample is inserted into loading slot (21)；Heating device (3) uses adding thermal resistance
Silk, heating device (3) are filled between loading slot (21).
3. a kind of Accuracy of Permanganate Index Determination according to claim 1 clears up instrument, it is characterised in that: on the body (1)
It is connected with the closing cap (7) of closing carrying apparatus (2), closing cap (7) is connected in body (1).
4. a kind of Accuracy of Permanganate Index Determination according to claim 1 clears up instrument, it is characterised in that: the control circuit
(1000) include:
Detection circuit (100) is coupled to temperature sensor (5), timer (4) to receive inductive signal and issues detection signal；
Comparison circuit (200) is coupled to the output end of detection circuit (100) to receive detection signal and export comparison signal；
Execution circuit (300) is coupled to comparison circuit (200) and controls heating device (3), alarm set according to comparison signal
(6) whether it is electric.
5. a kind of Accuracy of Permanganate Index Determination according to claim 4 clears up instrument, it is characterised in that: the comparison circuit
(200), including,
First comparing section (201) is coupled to detection circuit (100) to receive detection signal, and will test signal and first and preset
Value exports first control signal after being compared；
Second comparing section (202) is coupled to detection circuit (100) to receive detection signal, and will test signal and second and preset
Value exports second control signal after being compared.
6. a kind of Accuracy of Permanganate Index Determination according to claim 4 clears up instrument, it is characterised in that: the execution circuit
(300) include,
First control units (301) is coupled to the first comparing section (201) to receive first control signal, when temperature sensor (5)
When inductive signal is lower than the first preset value, first control units (301) makes heating device (3) to obtain electric and is kept as electricity condition；
Second control unit (302) is coupled to the second comparing section (202) to receive second control signal, when the induction of timer (4)
After signal is greater than the second preset value, the second control unit (302) powers off first control units (301) and keeps alarm set (6)
Energized state.
7. a kind of Accuracy of Permanganate Index Determination according to claim 6 clears up instrument, it is characterised in that: the first control units
(301) include:
5th resistance (R5), one end are coupled to the first comparing section (201)；
First triode (Q1), emitter ground connection, base stage are coupled to the other end of the 5th resistance (R5)；
6th resistance (R6), one end are coupled to the tie point of the 5th resistance (R5) Yu the first triode (Q1) base stage, other end coupling
It is connected to the tie point of the first triode (Q1) and ground；
9th resistance (R9), one end are coupled to direct current, and the other end is coupled to the collector of the first triode (Q1)；
First relay (KM1), including coil, the first normally opened contact switch (KM1-1), coil one end is coupled to the 9th resistance
(R9) and the tie point of direct current, the other end of coil are coupled to the tie point of the 9th resistance (R9) and the first triode (Q1),
First normally opened contact switch (KM1-1) and heating device (3) couple.
8. a kind of Accuracy of Permanganate Index Determination according to claim 6 clears up instrument, it is characterised in that: second control unit
(302) include,
7th resistance (R7) is coupled to the second comparing section (202)；
Second triode (Q2), base stage are coupled to the 7th resistance (R7), emitter ground connection；
8th resistance (R8), one end are coupled to the tie point of the 7th resistance (R7) Yu the second triode (Q2) base stage, other end coupling
It is connected to the tie point of the second triode (Q2) and ground；
Second relay (KM2), including the second normally opened contact switch (KM2-1), coil, the first normally-closed contact switch (KM2-2),
One end of coil is coupled to direct current, and the other end of coil is coupled to the collector of the second triode (Q2), the second normally opened contact
It switchs (KM2-1) and alarm set (6) to couple, the first normally-closed contact switch (KM2-2) is coupled to the first normal open switch and heating
Between device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822142120.1U CN209264406U (en) | 2018-12-19 | 2018-12-19 | A kind of Accuracy of Permanganate Index Determination resolution instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822142120.1U CN209264406U (en) | 2018-12-19 | 2018-12-19 | A kind of Accuracy of Permanganate Index Determination resolution instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209264406U true CN209264406U (en) | 2019-08-16 |
Family
ID=67560224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822142120.1U Active CN209264406U (en) | 2018-12-19 | 2018-12-19 | A kind of Accuracy of Permanganate Index Determination resolution instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209264406U (en) |
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2018
- 2018-12-19 CN CN201822142120.1U patent/CN209264406U/en active Active
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