CN114965877A - Real-time monitoring device for laboratory toxic gas - Google Patents
Real-time monitoring device for laboratory toxic gas Download PDFInfo
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- CN114965877A CN114965877A CN202210511231.3A CN202210511231A CN114965877A CN 114965877 A CN114965877 A CN 114965877A CN 202210511231 A CN202210511231 A CN 202210511231A CN 114965877 A CN114965877 A CN 114965877A
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- 239000002341 toxic gas Substances 0.000 title claims abstract description 43
- 238000012806 monitoring device Methods 0.000 title claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 76
- 238000012544 monitoring process Methods 0.000 claims abstract description 69
- 238000001514 detection method Methods 0.000 claims abstract description 41
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000011897 real-time detection Methods 0.000 claims abstract description 11
- 239000006185 dispersion Substances 0.000 claims abstract 3
- 238000003756 stirring Methods 0.000 claims description 44
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 16
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 13
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 235000010269 sulphur dioxide Nutrition 0.000 claims 1
- 239000004291 sulphur dioxide Substances 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 11
- 238000009826 distribution Methods 0.000 description 9
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0037—NOx
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/14—Mixing gases with gases with moving mixing elements, e.g. with liquid seal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0042—SO2 or SO3
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0044—Sulphides, e.g. H2S
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0054—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/23—Mixing of laboratory samples e.g. in preparation of analysing or testing properties of materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The application provides a real-time monitoring device of laboratory toxic gas, includes: the monitoring device comprises a monitoring main body, a plurality of universal wheels are arranged at the bottom of the monitoring main body, and a display screen is arranged on the side wall of the monitoring main body; be provided with the collection wind sampling mechanism that is used for absorbing the gas of co-altitude position on the control main part lateral wall, the inside rabbling mechanism that is used for carrying out the dispersion to the gas that collection wind sampling mechanism absorbs that is provided with of control main part, the inside real-time detection exhaust mechanism that is used for detecting and discharging the gas of rabbling mechanism dispersion that is provided with of control main part, this application is rational in infrastructure, can detect the different types of gas of co-altitude not that distributes, it is high to detect the precision, detection efficiency is high, can monitor the toxic gas in the air in real time, and the security is high.
Description
Technical Field
The application relates to a real-time monitoring device for toxic gas, in particular to a real-time monitoring device for toxic gas in a laboratory.
Background
At present, the chemistry experiment article that chemistry laboratory was deposited are many, deposit for a long time, and chemistry experiment article often give off some toxic gas, and these toxic gas harm is very big to the human body, if these toxic gas can not reach certain concentration, and the sense organ that singly relies on the people hardly sees out, consequently, these toxic gas that give off make the injury to the human body very easily, need use toxic gas's real time monitoring device when detecting gas.
In the prior art, toxic gases are various, the quality of the toxic gases is different, some toxic gases float upwards, some toxic gases sink downwards, different types of toxic gases cannot be detected, and the detection precision is low due to different distribution height positions. And the gas is inhomogeneous when detecting, needs to detect many times, influences detection efficiency. In addition, the toxic gas in the air can not be monitored in real time, and potential safety hazards exist, so that a real-time monitoring device for the toxic gas in a laboratory is urgently needed to solve the problems.
Disclosure of Invention
To the not enough that prior art exists, this application aim at provides a laboratory toxic gas's real time monitoring device to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the present application provides a real-time monitoring device for laboratory toxic gas, comprising:
the monitoring device comprises a monitoring main body, a plurality of universal wheels are arranged at the bottom of the monitoring main body, and a display screen is arranged on the side wall of the monitoring main body;
the monitoring body is provided with a wind collecting and sampling mechanism on the side wall, the wind collecting and sampling mechanism is used for sucking gas at different height positions, the monitoring body is internally provided with a stirring mechanism used for dispersing the gas sucked by the wind collecting and sampling mechanism, and the monitoring body is internally provided with a real-time detection exhaust mechanism used for detecting and exhausting the gas dispersed by the stirring mechanism.
Further, collection wind sampling mechanism includes the wind-collecting plate, and the wind-collecting plate setting is at control main part top and extends to control main part lateral wall, and the wind-collecting plate surface is provided with the wind-collecting cover, and the wind-collecting plate surface is provided with a plurality of inlet ports, and the wind-collecting plate all is provided with the connecting pipe on being close to the both sides wall of control main part, is provided with the three-way valve between two connecting pipes, and the three-way valve bottom is provided with the suction fan through linking up the pipe.
Further, the wind collecting plate is of an L-shaped structure, and the L-shaped corner of the wind collecting plate is matched with the right-angle corner of the side wall of the monitoring body.
Furthermore, the specifications of the two connecting pipes are the same, the areas of the two side walls of the air collecting plate with the L-shaped structure are the same, and the two connecting pipes are provided with one-way valves.
Further, rabbling mechanism includes that inside is hollow structure's the aerofoil that looses, and the aerofoil that looses sets up inside the control main part, and with the sealed intercommunication of fan, the inside axis of rotation of arranging in the aerofoil that looses below that is provided with of control main part, is provided with a plurality of stirring vane on the axis of rotation lateral wall, and the aerofoil that looses bottom is seted up a plurality of gas that are used for absorbing the fan and is dispersed, and blows stirring vane and drive the axis of rotation and rotate the scattered wind hole that makes stirring vane carry out the stirring to gas.
Furthermore, a sealed air chamber is formed between the bottom of the air dispersing plate and the lower side of the inner wall of the monitoring main body, the stirring blade is arranged in the air chamber, a bearing is arranged at the joint of the rotating shaft and the inner wall of the monitoring main body, and the stirring blade is arranged right below the air dispersing hole.
Further, real-time detection exhaust mechanism is including setting up treater and the detection sensor in control main part inner wall downside, and control main part bottom is provided with the blast pipe, is provided with electric valve on the blast pipe, is provided with the pressure sensor who is used for carrying out the measuring to air chamber pressure on the control main part lateral wall, is provided with on the control main part inner wall to be used for making fan and electric valve regularly open in order to carry out real-time supervision's time relay to gas, is provided with the alarm on the control main part lateral wall.
Further, the processor is used for receiving the detection signals of the pressure sensor and the detection sensor and judging to form a control instruction, the display screen is used for receiving the control instruction to display a detection gas content value, the alarm is used for receiving the control instruction to carry out risk reminding, and the electric valve is used for receiving the control instruction to enable the electric valve to be opened and closed.
Further, the detection sensors include a nitric oxide sensor, a sulfur dioxide sensor, a hydrogen sulfide sensor, and an ammonia gas sensor.
Furthermore, still including being used for carrying out the pick-and-place mechanism that maintains the change to detecting sensor, pick-and-place mechanism is provided with the application of force piece including setting up at the sealed door that the control main part lateral wall just communicates with the air chamber is sealed, and the sealing door is provided with the rotation hinge with the control main part junction, is provided with the bolt on the sealing door lateral wall, and application of force piece is provided with the bolt with the control main part junction.
According to the utility model provides a real-time monitoring device of laboratory toxic gas uses collection wind sampling mechanism to absorb the gas of co-altitude position and uses rabbling mechanism to concentrate even stirring to gas, carries out real-time detection to gas through real-time detection exhaust mechanism at last, and it is high to detect the precision, and moreover, the sampling absorbs gas distribution and evenly improves detection efficiency, in addition, can carry out real-time monitoring to the toxic gas in the air in real time, improves the security.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments with reference to the attached drawings in which:
fig. 1 is a perspective view of a real-time monitoring apparatus for laboratory toxic gases according to an embodiment of the present application;
FIG. 2 is a front cross-sectional view of a real-time monitoring device for laboratory toxic gases, according to an embodiment of the present application;
fig. 3 is a perspective view of a joint between a rotating shaft and a stirring vane in a real-time monitoring device for toxic gases in a laboratory according to an embodiment of the present application;
FIG. 4 is an enlarged view of A in FIG. 3 according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a control system according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a detection sensor in a real-time monitoring device for laboratory toxic gases according to an embodiment of the present application;
in the figure: 1-a monitoring main body, 2-an air collecting sampling mechanism, 21-an air collecting plate, 22-an air collecting cover, 23-an air inlet, 24-a connecting pipe, 25-a one-way valve, 26-a three-way valve, 27-a fan, 3-a real-time detection exhaust mechanism, 31-an alarm, 32-a detection sensor, 33-a processor, 34-an exhaust pipe, 35-an electric valve and 36-a pressure sensor, 37-a time relay, 4-a universal wheel, 5-a pick-and-place mechanism, 51-a force application block, 52-a bolt, 53-a sealing door, 54-a rotating hinge, 6-a stirring mechanism, 61-a wind dispersing plate, 611-a wind dispersing hole, 62-a bearing, 63-a rotating shaft, 64-a stirring blade, 65-an air chamber and 7-a display screen.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the application easy to understand, the application is further described in the following with the specific embodiments.
As shown in fig. 1, the present application provides a technical solution: a real-time monitoring device for laboratory toxic gases, comprising:
the monitoring device comprises a monitoring main body 1, wherein a plurality of universal wheels 4 are arranged at the bottom of the monitoring main body 1, and a display screen 7 is arranged on the side wall of the monitoring main body 1;
the side wall of the monitoring main body 1 is provided with an air collecting and sampling mechanism 2 for absorbing air at different height positions, the monitoring main body 1 is internally provided with a stirring mechanism 6 for dispersing the air absorbed by the air collecting and sampling mechanism 2, the monitoring main body 1 is internally provided with a real-time detection and exhaust mechanism 3 for detecting and exhausting the air dispersed by the stirring mechanism 6, the design absorbs the gas at different height positions by using the wind collecting and sampling mechanism 2, intensively and uniformly stirs the gas by using the stirring mechanism 6, and finally detects the gas in real time by using the real-time detection and exhaust mechanism 3, so that different kinds of toxic gas can be detected, the phenomenon of low detection precision caused by different distribution of the height positions of the toxic gas is avoided, the detection precision is improved, and the phenomenon that gas distribution is uneven and needs to be detected for multiple times during detection is avoided, and the detection efficiency is further improved.
Referring to fig. 2, the wind collecting and sampling mechanism 2 includes a wind collecting plate 21, the wind collecting plate 21 is disposed on the top of the monitoring body 1 and extends to the side wall of the monitoring body 1, a wind collecting cover 22 is disposed on the surface of the wind collecting plate 21, a plurality of air inlets 23 are disposed on the surface of the wind collecting plate 21, connecting pipes 24 are disposed on two side walls of the wind collecting plate 21 close to the monitoring body 1, a three-way valve 26 is disposed between the two connecting pipes 24, a suction fan 27 is disposed at the bottom of the three-way valve 26 through a connecting pipe, the design enables the air inlets 23 on the surface of the wind collecting plate 21 to suck and sample gases with different height distributions by using the fan 27, the gases are intensively sent to the inside of an air chamber 65 through a wind distributing plate 61, so as to sample the gases with different height distributions, the wind collecting plate 21 is of an L-shaped structure, the L-shaped corner of the wind collecting plate 21 is matched with the right angle of the side wall of the monitoring body 1, the design is attached to the top and the side wall of the monitoring body 1 through the wind collecting plate 21 of the L-shaped structure, improve the stability of junction, be convenient for inhale the sample simultaneously to 1 top of control main part and lateral wall, play and be convenient for carry out the effect of sampling the absorption to the gas of different height distributions, two connecting pipes 24's specification is the same, the area of the wind board 21 both sides wall of L type structure is the same, this design is convenient for wind board 21's top and lateral wall absorb the gas of the same volume simultaneously, improve the homogeneity of sampling, all be provided with check valve 25 on two connecting pipes 24, through using check valve 25, be convenient for gaseous one-way flow prevents gaseous backward flow, two sides through the wind board 21 of L type structure are sampled gas simultaneously, the area that the increase was admitted air, make the inside most gas that can be stored of air chamber 65, the gas of subtotal flows from blast pipe 34.
Referring to fig. 2, 3 and 4, the stirring mechanism 6 includes an air diffuser 61 with a hollow structure inside, the air diffuser 61 is disposed inside the monitoring body 1 and is in sealed communication with the fan 27, a rotating shaft 63 disposed below the air diffuser 61 is disposed inside the monitoring body 1, a plurality of stirring blades 64 are disposed on a side wall of the rotating shaft 63, a plurality of air diffusing holes 611 for dispersing the air sucked by the fan 27 and blowing the stirring blades 64 to drive the rotating shaft 63 to rotate so that the stirring blades 64 stir the air are disposed at a bottom of the air diffuser 61, in this design, the air blowing out through the air diffusing holes 611 applies force to the stirring blades 64, the stirring blades 64 rotate the rotating shaft 63, so that the gas inside the air chamber 65 is stirred by the stirring blades 64, the gas is uniformly distributed, a phenomenon that multiple detections are needed due to uneven distribution of the gas during the detections is avoided, and the detection efficiency is improved, even stirring make full use of is gaseous mobile, avoid using motor drive stirring, the cost is saved, form sealed air chamber 65 between the aerofoil 61 bottom of loosing and the 1 inner wall downside of control main part, stirring vane 64 is arranged in inside air chamber 65, this design is convenient for concentrate the detection to gas through using air chamber 65, axis of rotation 63 is provided with bearing 62 with the 1 inner wall junction of control main part, stirring vane 64 is arranged in under the hole 611 that looses, this design makes things convenient for scattered wind hole 611 to blow the application of force and drive axis of rotation 63 and rotate stirring vane 64.
Continuing to refer to fig. 2, the real-time detection exhaust mechanism 3 includes a processor 33 and a detection sensor 32 which are arranged on the lower side of the inner wall of the monitoring body 1, a pressure sensor 36 for detecting the pressure of the air chamber 65 is arranged on the side wall of the monitoring body 1, an exhaust pipe 34 is arranged at the bottom of the monitoring body 1, an electric valve 35 is arranged on the exhaust pipe 34, a time relay 37 for opening the fan 27 and the electric valve 35 at fixed time to monitor the gas in real time is arranged on the inner wall of the monitoring body 1, an alarm 31 is arranged on the side wall of the monitoring body 1, the design drives the fan 27 and the electric valve 35 to work at fixed time by using the time relay 37, the gas is sent to the air chamber 65 at fixed time to detect the gas distributed at different height positions in real time by the detection sensor 32, so as to perform real-time monitoring on the toxic gas in the air, the safety of laboratory user personnel is improved.
Referring to fig. 5 and 6, the processor 33 is configured to receive detection signals of the pressure sensor 36 and the detection sensor 32 and perform judgment to form a control instruction, the display 7 is configured to receive the control instruction to display a detected gas content value, the alarm 31 is configured to receive the control instruction to perform risk reminding, the electrically operated valve 35 is configured to receive the control instruction to open and close the electrically operated valve 35, and the detection sensor 32 includes a nitric oxide sensor, a sulfur dioxide sensor, a hydrogen sulfide sensor and an ammonia sensor, so that the rationality of the design is improved.
Referring to fig. 1, still including being used for carrying out the pick-up and put mechanism 5 that maintains the change to detecting sensor 32, pick-up and put mechanism 5 including setting up sealing door 53 at monitoring main part 1 lateral wall and with air chamber 65 sealing intercommunication, sealing door 53 is provided with rotation hinge 54 with monitoring main part 1 junction, be provided with application of force piece 51 on the sealing door 53 lateral wall, application of force piece 51 is provided with bolt 52 with monitoring main part 1 junction, this design passes through bolt 52 and carries out the elasticity to application of force piece 51, be convenient for make sealing door 53 rotate along rotation hinge 54, then maintain the change to detecting sensor 32 through sealing door 53 and air chamber 65 junction, excellent in use effect.
Referring to fig. 1 to 6, in another aspect, the present application provides a method for using a real-time monitoring device for laboratory toxic gas, comprising the following steps:
step (A), the fan 27 and the electric valve 35 are opened at regular time through the time relay 37, and gas is sampled and conveyed to the inside of the gas chamber 65;
step (B), stirring the gas;
step (C), detecting and discharging the gas;
step (D), carrying out maintenance and replacement operation on the detection sensor 32;
and (E) repeating the steps (A) to (C) to perform real-time monitoring operation on the gas.
The step (A) specifically comprises the following steps:
(A1) adjusting the time relay 37 to the proper interval of the power-on time, when the time relay 37 reaches the set power-on time, enabling the fan 27 and the electric valve 35 to work, enabling the fan 27 to work to enable the two side feed holes of the L-shaped wind collecting plate 21 to simultaneously and unidirectionally feed air through the one-way valve 25, enabling the air to enter the interior of the wind dispersing plate 61 through the three-way valve 26 and the fan 27 and flow out of the plurality of wind dispersing holes 611 at the bottom of the wind dispersing plate 61, enabling the electric valve 35 to work to open the passage of the exhaust pipe 34 at the moment, enabling a small part of the air to flow out of the air chamber 65 from the exhaust pipe 34, and enabling the two sides of the L-shaped wind collecting plate 21 to be top walls and side walls;
(A2) most of the gas is stored in the gas chamber 65, when the pressure sensor 36 detects that the pressure in the gas chamber 65 is greater than or equal to a set value, the pressure is fed back to the processor 33, the processor 33 judges that a control instruction is formed and transmits the control instruction to the electric valve 35 and the fan 27, and the fan 27 and the electric valve 35 stop working after receiving the control instruction, so that the functions of conveniently sucking and sampling the gas distributed at different heights are achieved;
(A3) most of the gas is stored in the gas chamber 65, when the pressure sensor 36 detects that the pressure of the gas chamber 65 is smaller than a set value, the pressure is fed back to the processor 33, the processor 33 judges that a control instruction is formed and transmits the control instruction to the electric valve 35 and the fan 27, and the fan 27 and the electric valve 35 continue to work after receiving the control instruction;
the step (B) specifically comprises the following steps:
(B1) the gas flowing out of the air dispersing hole 611 blows the stirring blade 64 to drive the rotating shaft 63 to rotate, and the rotating shaft 63 rotates to drive the stirring blade 64 to rotate to stir the gas in the air chamber 65 so as to be uniformly distributed;
(B2) when the air inlet of the air dispersing hole 611 is stopped, the rotating shaft 63 continuously drives the stirring blade 64 to rotate due to inertia, the stirring blade 64 rotates to stir the gas, the effect of uniformly stirring the gas which is sucked and sampled is facilitated, the phenomenon that the gas is not uniformly distributed during detection and needs to be detected for multiple times is avoided, and the detection efficiency is further improved;
the step (C) specifically comprises the following steps:
(C1) after the fan 27 and the electric valve 35 stop working, the detection sensor 32 detects the gas uniformly stirred in the gas chamber 65, and the nitric oxide sensor, the sulfur dioxide sensor, the hydrogen sulfide sensor and the ammonia sensor in the detection sensor 32 respectively detect nitric oxide gas, sulfur dioxide gas, hydrogen sulfide gas and ammonia gas in sequence;
(C2) if the detected values of the nitric oxide sensor, the sulfur dioxide sensor, the hydrogen sulfide sensor and the ammonia sensor are larger than or equal to the set values, the values are fed back to the processor 33, the processor 33 judges that a control instruction is formed and transmitted to the display screen 7 and the alarm 31, the display screen 7 receives the control instruction to display the value of the corresponding detected gas in the detection sensor 32, the alarm 31 receives the control instruction to start working and send out an alarm, the nitric oxide sensor, the sulfur dioxide sensor, the hydrogen sulfide sensor and the ammonia sensor sequentially detect the corresponding gas, the design can detect different types of toxic gases, the phenomenon of low detection precision caused by different height position distribution of the toxic gases is avoided, and the detection precision is improved;
(C3) if the detected values of the nitric oxide sensor, the sulfur dioxide sensor, the hydrogen sulfide sensor and the ammonia sensor are smaller than the set values, the values are fed back to the processor 33, the processor 33 judges that a control instruction is formed and transmits the control instruction to the display screen 7 and the alarm 31, the display screen 7 receives the control instruction to display the value of the corresponding detected gas in the detection sensor 32, and the alarm 31 does not work when receiving the control instruction;
(C4) after the gas is detected in sequence, the last detected ammonia sensor sends a signal to the controller, the controller enables the fan 27 and the electric valve 35 to start working, the fan 27 sucks the gas into the gas chamber 65, the original gas in the gas chamber 65 is replaced, and the sampled and detected gas is discharged from the gas outlet pipe;
(C5) similarly, when the pressure sensor 36 detects that the pressure of the air chamber 65 is greater than or equal to the set value, the pressure is fed back to the processor 33, the processor 33 judges that a control instruction is formed and transmitted to the electric valve 35 and the fan 27, the fan 27 and the electric valve 35 stop working after receiving the control instruction, at this time, the sampled and detected air is completely discharged out of the air chamber 65, and when the pressure sensor 36 detects that the pressure of the air chamber 65 is greater than or equal to the set value, the air in the air chamber 65 is replaced;
the step (D) specifically includes the following steps:
(D1) when the detection sensor 32 needs to be repaired and replaced, the bolt 52 is screwed to separate the force application block 51 from the monitoring body 1, and the joint of the force application block 51 and the monitoring body 1 is loosened;
(D2) the urging block 51 is urged to rotate the seal door 53 along the rotation hinge 54, the seal door 53 is separated from the monitoring body 1, and the detection sensor 32 is maintained and replaced from the communication position between the seal door 53 and the air chamber 65.
While there have been shown and described what are at present considered the fundamental principles and essential features of the application and its advantages, it will be apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics of the application. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A real-time monitoring device for laboratory toxic gases, comprising:
the monitoring device comprises a monitoring main body (1), wherein a plurality of universal wheels (4) are arranged at the bottom of the monitoring main body (1), and a display screen (7) is arranged on the side wall of the monitoring main body (1);
it is characterized in that the preparation method is characterized in that,
be provided with collection wind sampling mechanism (2) that are used for absorbing the gas of co-altitude position on control main part (1) lateral wall, control main part (1) inside be provided with be used for right the gas that collection wind sampling mechanism (2) absorb carries out rabbling mechanism (6) that disperse, control main part (1) inside be provided with be used for right the gas of rabbling mechanism (6) dispersion detects and exhaust real-time detection exhaust mechanism (3).
2. The device for monitoring toxic gas in a laboratory in real time according to claim 1, wherein the wind collecting and sampling mechanism (2) comprises a wind collecting plate (21), the wind collecting plate (21) is disposed on the top of the monitoring body (1) and extends to the side wall of the monitoring body (1), a wind collecting cover (22) is disposed on the surface of the wind collecting plate (21), a plurality of air inlets (23) are disposed on the surface of the wind collecting plate (21), connecting pipes (24) are disposed on two side walls of the wind collecting plate (21) close to the monitoring body (1), a three-way valve (26) is disposed between the two connecting pipes (24), and a fan (27) is disposed at the bottom of the three-way valve (26) through a connecting pipe.
3. The device for real-time monitoring of laboratory toxic gas according to claim 2, wherein the wind collecting plate (21) is of an L-shaped structure, and the L-shaped corner of the wind collecting plate (21) matches with the right-angled corner of the side wall of the monitoring body (1).
4. The device for real-time monitoring of laboratory toxic gas according to claim 3, wherein the two connecting pipes (24) have the same specification, the areas of the two side walls of the wind collecting plate (24) with the L-shaped structure are the same, and the two connecting pipes (24) are provided with one-way valves (25).
5. The device for monitoring the laboratory toxic gas in real time according to claim 2, wherein the stirring mechanism (6) comprises an air diffuser (61) having a hollow structure inside, the air diffuser (61) is disposed inside the monitoring body (1) and is in sealed communication with the fan (27), a rotating shaft (63) disposed below the air diffuser (61) is disposed inside the monitoring body (1), a plurality of stirring blades (64) are disposed on a side wall of the rotating shaft (63), and a plurality of air diffusing holes (611) for diffusing the gas sucked by the fan (27) and blowing the stirring blades (64) to drive the rotating shaft (63) to rotate so that the stirring blades (64) stir the gas are disposed at the bottom of the air diffuser (61).
6. The device for real-time monitoring of laboratory toxic gas according to claim 5, wherein a sealed air chamber (65) is formed between the bottom of the air diffuser (61) and the underside of the inner wall of the monitoring body (1), the stirring blade (64) is disposed inside the air chamber (65), a bearing (62) is disposed at the connection position of the rotating shaft (63) and the inner wall of the monitoring body (1), and the stirring blade (64) is disposed right below the air diffuser hole (611).
7. The device for monitoring the laboratory toxic gas in real time according to claim 6, wherein the real-time detection exhaust mechanism (3) comprises a processor (33) and a detection sensor (32) which are arranged on the lower side of the inner wall of the monitoring body (1), an exhaust pipe (34) is arranged at the bottom of the monitoring body (1), an electric valve (35) is arranged on the exhaust pipe (34), a pressure sensor (36) for detecting the pressure of the air chamber (65) is arranged on the side wall of the monitoring body (1), a time relay (37) for enabling the fan (27) and the electric valve (35) to be opened at regular time to monitor the gas in real time is arranged on the inner wall of the monitoring body (1), and an alarm (31) is arranged on the side wall of the monitoring body (1).
8. The device for monitoring the laboratory toxic gas in real time according to claim 7, wherein the processor (33) is configured to receive the detection signals of the pressure sensor (36) and the detection sensor (32) and make a judgment to form a control command, the display screen (7) is configured to receive the control command to display a content value of the detection gas, the alarm (31) is configured to receive the control command to perform risk reminding, and the electric valve (35) is configured to receive the control command to open and close the electric valve (35).
9. The device for real-time monitoring of laboratory toxic gases as claimed in claim 8, wherein said detection sensors (32) comprise a nitric oxide sensor, a sulphur dioxide sensor, a hydrogen sulphide sensor and an ammonia gas sensor.
10. The device for monitoring the laboratory toxic gas in real time according to claim 8, further comprising a pick-and-place mechanism (5) for repairing and replacing the detection sensor (32), wherein the pick-and-place mechanism (5) comprises a sealing door (53) which is arranged on a side wall of the monitoring body (1) and is in sealing communication with the air chamber (65), a rotating hinge (54) is arranged at a joint of the sealing door (53) and the monitoring body (1), a force application block (51) is arranged on a side wall of the sealing door (53), and a bolt (52) is arranged at a joint of the force application block (51) and the monitoring body (1).
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| CN202210511231.3A CN114965877A (en) | 2022-05-11 | 2022-05-11 | Real-time monitoring device for laboratory toxic gas |
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| CN202210511231.3A CN114965877A (en) | 2022-05-11 | 2022-05-11 | Real-time monitoring device for laboratory toxic gas |
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Application publication date: 20220830 |