CN116223402A - Detection device for phosphorus pentoxide in air - Google Patents
Detection device for phosphorus pentoxide in air Download PDFInfo
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- CN116223402A CN116223402A CN202310448300.5A CN202310448300A CN116223402A CN 116223402 A CN116223402 A CN 116223402A CN 202310448300 A CN202310448300 A CN 202310448300A CN 116223402 A CN116223402 A CN 116223402A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
- B64C39/024—Aircraft not otherwise provided for characterised by special use of the remote controlled vehicle type, i.e. RPV
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention provides a detection device for phosphorus pentoxide in air, which belongs to the technical field of air quality detection and comprises the following components: the portable detection case is equipped with controller, aspiration pump, spectrum appearance and sampling part in the detection case. The sampling part includes intake pipe, connecting pipe and filter membrane, the lateral wall of detecting the case is worn to locate by the intake pipe, the air inlet of aspiration pump is located to the connecting pipe, and the connecting pipe is coaxial with the intake pipe, the axis removes the setting along the connecting pipe, the both ends of filter membrane are convoluteed respectively in two reel, two reel adopt motor synchronous drive for drive filter membrane along length direction removes, and the middle section of filter membrane passes between connecting pipe and the intake pipe, the filter face of filter membrane is towards the intake pipe, the detection mouth of spectrum appearance is towards the filter face of filter membrane, the identification hole has been seted up to equal spaced position on the filter membrane, be equipped with the sensor in the detecting the case, be used for detecting the position of identification hole. The phosphorus pentoxide in the air can be automatically sampled and detected, and emergency use of sudden accidents is facilitated.
Description
Technical Field
The invention belongs to the technical field of air quality detection, and particularly relates to a detection device for phosphorus pentoxide in air.
Background
Phosphorus pentoxide, also known as phosphoric anhydride, is usually a white, very deliquescent crystalline powder with a density of 2.39g/cm 3 Sublimating at 300 ℃, melting point is 580-585 ℃, vapor pressure is 133.3Pa (384 ℃). Phosphorus pentoxide can generate a great deal of smoke and heat when meeting tide, and has slight corrosiveness to most metals. The phosphorus pentoxide has strong local irritation, and the steam and dust can seriously irritate eyes, mucous membranes, skin and respiratory systems and corrode the skin and mucous membranes. When the concentration of phosphorus pentoxide in the air exceeds 1mg/m 3 When the composition is in a high concentration, the composition can be in a faint state on site.
Monitoring of phosphorus pentoxide in ambient air required to meet the maximum concentration limit of 0.5mg/m 3 In addition, the analysis process is required to be convenient to operate and easy to master.
The standard of the existing environmental monitoring analysis method is the ascorbic acid reduction-molybdenum blue spectrophotometry for determination of phosphorus pentoxide in the ambient air (HJ 546-2015), and the method can only be manually sampled at present and then sent back to a laboratory for analysis. From the completion of the sampling to laboratory analysis, the sample transportation time is often long, and the emergency monitoring requirement of the sudden environmental accident cannot be met.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the detection device for the phosphorus pentoxide in the air, which can automatically sample and detect the phosphorus pentoxide and is beneficial to emergency use of sudden environmental pollution accidents.
In order to achieve the object of the invention, the following scheme is adopted:
a detection device for phosphorus pentoxide in air, comprising: the portable detection case is equipped with controller, aspiration pump, spectrum appearance and sampling part in the detection case.
The sampling part includes intake pipe, connecting pipe and filter membrane, the lateral wall of detecting the case is worn to locate by the intake pipe, the air inlet of aspiration pump is located to the connecting pipe, and the connecting pipe is coaxial with the intake pipe, the axis removes the setting along the connecting pipe, the both ends of filter membrane are convoluteed respectively in two reel, two reel adopt motor synchronous drive for drive filter membrane along length direction removes, and the middle section of filter membrane passes between connecting pipe and the intake pipe, the filter face of filter membrane is towards the intake pipe, the detection mouth of spectrum appearance is towards the filter face of filter membrane, the identification hole has been seted up to equal spaced position on the filter membrane, be equipped with the sensor in the detecting the case, be used for detecting the position of identification hole.
Further, a guide block is arranged between the air inlet pipe and the connecting pipe, through holes are vertically formed in the guide block, the end parts of the connecting pipe and the air inlet pipe penetrate through the through holes, limit holes are formed in the guide block along the moving direction of the filter membrane, and the filter membrane penetrates through the limit holes.
Further, the connecting pipe is provided with a screen plate towards the inside of one end of the filter membrane, and the end face of the screen plate is flush with the end face of the connecting pipe.
Further, the front end of detecting the incasement corresponding to the spectrometer detection mouth is equipped with the clamp plate, and the guide hole has been seted up along the direction of movement of filter membrane to the clamp plate, and the filter membrane passes from the guide hole, and the through-hole has been vertically seted up towards one side of spectrometer to the clamp plate, and the through-hole is worn to locate by the detection mouth of spectrometer, and the clamp plate removes along the axis direction of through-hole and sets up.
Further, be equipped with telescoping device in the detection case, telescoping device's telescopic link is parallel with the connecting pipe, and the front end of telescopic link is equipped with the push rod, and the one end and the connecting pipe of push rod link to each other, and the other end of push rod and the sloping block contact on the clamp plate outer wall, the clamp plate are equipped with the spring, and the flexible direction of spring is unanimous with the direction of movement of clamp plate, and when the push rod drove the connecting pipe to the intake pipe remove, the push rod passes through sloping block with the clamp plate push to the spectrum appearance, and the spring is stretched or compressed this moment.
Further, the filter membrane is L-shaped in the detection box, the corners of the filter membrane are guided by the supporting wheels, the air inlet pipe and the spectrometer are respectively arranged in the two straight sections of the filter membrane, more specifically, the air pump is positioned on the inner side of an included angle of the L-shaped filter membrane, and the spectrometer is arranged on the outer side of the L-shaped straight section.
Further, the inlet end of the air inlet pipe is provided with a top cover, a space is reserved between the circumferential inner wall of the top cover and the end face of the air inlet pipe, and the lower edge of the top cover extends to the side wall of the air inlet pipe.
Further, the filter membrane comprises a membrane belt, two ends of the membrane belt are respectively wound on the two winding wheels, a plurality of round holes are formed in the membrane belt along the length direction in an array mode, a filter membrane is arranged on one side, facing the air inlet pipe, of the membrane belt, and the filter membrane is coaxial with the round holes.
Further, the periphery of the round hole is arranged on two sides of the membrane belt, the outline of the rubber ring is matched with the end faces of the air inlet pipe and the connecting pipe, the filter membrane is of a circular structure, the filter membrane is embedded in the rubber ring, and the filter membrane is arranged on the membrane belt in an adhering mode.
Further, the detection box is arranged on an unmanned aerial vehicle, the air inlet pipe is arranged in the middle of the upper part of the unmanned aerial vehicle, and the exhaust pipe of the air pump is arranged at the bottom of the unmanned aerial vehicle.
The invention has the beneficial effects that:
1. the controller is used for controlling the operation of the air pump, the spectrometer and the sampling component, can automatically sample and detect, calculates the concentration of phosphorus pentoxide in the air through an internal program, realizes automatic sampling and timely detection, and is beneficial to quickly measuring the concentration of pollutants in the phosphorus pentoxide-related air pollution accident.
2. The unmanned aerial vehicle can collect the gas sample at a higher position, so that the representativeness of the collected sample is enhanced, and the migration and change trend of phosphorus pentoxide in the air can be effectively reflected.
Drawings
The drawings described herein are for illustration of selected embodiments only and not all possible implementations, and are not intended to limit the scope of the invention.
Fig. 1 shows a schematic view of the internal structure of the inspection box of the present application.
Fig. 2 shows a partial enlarged view at a in fig. 1.
Fig. 3 shows a cross-sectional view of the internal structure of the inspection box of the present application.
Fig. 4 shows a partial enlarged view at B in fig. 3.
Fig. 5 shows a schematic structural view of the guide block.
Fig. 6 shows a schematic structural view of the platen.
FIG. 7 shows a schematic diagram of a preferred structure of the filter membrane.
Fig. 8 shows a schematic structural diagram of the detection box when it is provided in an unmanned aerial vehicle.
The marks in the figure: the detection box-1, the reel-11, the sensor-12, the supporting wheel-13, the air pump-2, the spectrometer-3, the air inlet pipe-4, the top cover-41, the connecting pipe-5, the screen plate-51, the filter membrane-6, the marking hole-61, the membrane belt-62, the round hole-63, the filter membrane sheet-64, the rubber ring-65, the guide block-7, the through hole-71, the limiting hole-72, the pressing plate-8, the guide hole-81, the through hole-82, the inclined block-83, the spring-84, the telescopic device-9, the push rod-91 and the roller-92.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, but the described embodiments of the present invention are some, but not all embodiments of the present invention.
As shown in fig. 1 and 3, a device for detecting phosphorus pentoxide in air comprises: the portable detection case 1 is equipped with controller, aspiration pump 2, spectrum appearance 3 and sampling part in the detection case 1, and the controller is used for controlling aspiration pump 2, spectrum appearance 3 and sampling part work to and handle and emission data, spectrum appearance 3 is X fluorescence spectrum appearance.
Specifically, as shown in fig. 1 and 3, the sampling component includes an air inlet pipe 4, a connecting pipe 5 and a filter membrane 6, the air inlet pipe 4 is arranged on the side wall of the detection box 1 in a penetrating manner, the connecting pipe 5 is arranged at the air inlet end of the air pump 2, the connecting pipe 5 is coaxial with the air inlet pipe 4, the connecting pipe 5 is arranged along the axis in a moving manner, two ends of the filter membrane 6 are respectively wound on two winding wheels 11, the two winding wheels 11 are synchronously driven by a motor, the winding wheels 11 are used for driving the filter membrane 6 to move along the length direction, and the middle section of the filter membrane 6 passes through between the connecting pipe 5 and the air inlet pipe 4. During sampling, the connecting pipe 5 is moved, so that the end faces of the connecting pipe 5 and the air inlet pipe 4 are utilized to fix the sampling part of the filter membrane 6, the filter membrane 6 is prevented from moving, vibration of the filter membrane 6 under the action of air flow is reduced, and meanwhile, sample gas can be prevented from leaking from gaps between the surfaces of the connecting pipe 5 and the air inlet pipe 4 and the filter membrane 6, so that the air inflow obtained by converting the working time and the flow of the air suction pump 2 is ensured to be consistent with the actual air inflow, and the accuracy of a detection calculation result is ensured. The filter face of filter membrane 6 is towards intake pipe 4, the detection mouth of spectrum appearance 3 is towards the filter face of filter membrane 6, the identification hole 61 has been seted up to the equidistant position on filter membrane 6, be equipped with sensor 12 in the detection case 1, be used for detecting the position of identification hole 61, with the sampling position of confirm filter membrane 6, it removes to drive filter membrane 6 through the rotation of reel 11, so that the sampling position accurately removes to the detection mouth of spectrum appearance 3, carry out the analysis through spectrum appearance 3 to filter membrane 6 sampling position, and upload the testing result controller, so that the controller obtains the concentration of phosphorus pentoxide in the ambient air through the calculation. The filter membrane 6 may be made of polypropylene. When in use, the detection box 1 can be arranged on the triangular support frame for use.
Preferably, as shown in fig. 1, 3 and 5, a guide block 7 is arranged between the air inlet pipe 4 and the connecting pipe 5, the guide block 7 is vertically provided with a through hole 71, the end parts of the connecting pipe 5 and the air inlet pipe 4 pass through the through hole 71, the guide block 7 is provided with a limit hole 72 along the moving direction of the filter membrane 6, and the filter membrane 6 passes through the limit hole 72, so that the position stability of the suspended part of the filter membrane 6 is ensured, the consistency of the relative positions of the identification hole 61 and the sampling part is ensured, the compression position of the connecting pipe 5 is prevented from being influenced by the shaking of the filter membrane 6, and the filter membrane 6 is prevented from being pressed out of folds or the compression position is prevented from being deviated; meanwhile, the through holes 71 are used for guiding the connecting pipe 5, so that the relative position accuracy of the connecting pipe 5 and the air inlet pipe 4 is improved when the connecting pipe 5 and the air inlet pipe 4 are pressed, and the position deviation between the connecting pipe 5 and the air inlet pipe 4 is prevented, so that the tightness is prevented from being influenced.
It is further preferred that both ends of the limiting hole 72 are provided with chamfer structures so as to facilitate the penetration of the filter membrane 6.
More specifically, as shown in fig. 1, the sensor 12 is provided to penetrate the corner of the guide block 7, and the identification hole 61 is formed in a blank area between two circular sampling portions.
Preferably, as shown in fig. 3 and 4, the inside of one end of the connecting pipe 5 towards the filter membrane 6 is provided with a screen plate 51, the end face of the screen plate 51 is flush with the end face of the connecting pipe 5, and during sampling, the filter membrane 6 is supported by the screen plate 51, so that the filter membrane 6 is smoother, the sample is more uniform, and meanwhile, the filter membrane 6 is further prevented from vibrating.
Preferably, as shown in fig. 1 to 3 and 6, the front end of the detection box 1 corresponding to the detection port of the spectrometer 3 is provided with a pressing plate 8, the pressing plate 8 is provided with a guide hole 81 along the moving direction of the filter membrane 6, the filter membrane 6 passes through the guide hole 81, one side of the pressing plate 8, which faces the spectrometer 3, is vertically provided with a through hole 82, the detection port of the spectrometer 3 is arranged through the through hole 82, and the pressing plate 8 is arranged along the axial direction of the through hole 82 in a moving manner and is used for pressing the filter membrane 6 on the detection port of the spectrometer 3 so as to prevent light leakage from affecting the accuracy of the detection structure.
More specifically, as shown in fig. 1 to 3 and 6, a telescoping device 9 is disposed in the detection box 1, a telescoping rod of the telescoping device 9 is parallel to the connecting pipe 5, a push rod 91 is disposed at the front end of the telescoping rod, one end of the push rod 91 is connected with the connecting pipe 5, the other end of the push rod 91 contacts with a bevel block 83 on the outer wall of the pressing plate 8, the pressing plate 8 is provided with a spring 84, the telescoping direction of the spring 84 is consistent with the moving direction of the pressing plate 8, when the push rod 91 drives the connecting pipe 5 to move towards the air inlet pipe 4, the push rod 91 pushes the pressing plate 8 towards the spectrometer 3 through the bevel block 83 for pressing the filter membrane 6 against the detection port of the spectrometer 3, at this time, when the push rod 91 drives the connecting pipe 5 to move towards the direction deviating from the spectrometer 3 under the action of restoring elastic force of the spring 84, so as to release the filter membrane 6.
As shown in fig. 2, it is further preferable that the end of the push rod 91 contacting the inclined block 83 is provided with a roller 92, and the sliding contact is replaced with rolling contact, thereby reducing wear and making the movement of the push rod 91 smoother.
Preferably, as shown in fig. 3, the filter membrane 6 is arranged in an L shape in the detection box 1, the corners of the filter membrane 6 are guided by the supporting wheels 13, the air inlet pipe 4 and the spectrometer 3 are respectively arranged in the two straight sections of the filter membrane 6, more specifically, the air suction pump 2 is positioned at the inner side of the L-shaped included angle, the spectrometer 3 is arranged at the outer side of the L-shaped straight section so as to avoid crowding at the same side of the filter membrane 6, and meanwhile, the spectrometer 3 is also just positioned at one side of the filter surface of the filter membrane 6, so that the arrangement range of the air suction pump 2 and the spectrometer 3 is reduced, and the overall size of the detection box 1 is reduced.
Preferably, as shown in fig. 1 and 3, the inlet end of the air inlet pipe 4 is provided with a top cover 41, and a space is reserved between the circumferential inner wall of the top cover 41 and the end surface of the air inlet pipe 4, so that air can be conveniently introduced, and the air around the air inlet pipe 4 can be uniformly collected, so that an air sample is more representative, the lower edge of the top cover 41 extends to the side wall of the air inlet pipe 4, so as to form a shielding structure, and impurities are prevented from entering.
Preferably, as shown in fig. 7, the filter membrane 6 includes a membrane belt 62, two ends of the membrane belt 62 are respectively wound on two winding wheels 11, a plurality of round holes 63 are formed in the membrane belt 62 along the length direction in an array, a filter membrane 64 is arranged on one side of the membrane belt 62 facing the air inlet pipe 4, the filter membrane 64 is coaxial with the round holes 63, the inner diameter of the round holes 63 is smaller than the outer diameter of the filter membrane 64, the membrane belt 62 and the filter membrane 64 are in a split structure, and the split design can adopt cheaper materials to manufacture the membrane belt 62 due to the fact that the filter membrane 64 is expensive, so that the cost is saved, and if the filter membrane 64 is arranged in an adhering mode, the membrane belt 62 can be used as a carrier repeatedly.
Further preferably, as shown in fig. 7, the two sides of the membrane strip 62 are provided with rubber rings 65 corresponding to the circumferential sides of the round holes 63, and the outline of the rubber rings 65 is matched with the end surfaces of the air inlet pipe 4 and the connecting pipe 5, when the connecting pipe 5 is tightly pressed with the air inlet pipe 4, the rubber rings 65 are just between the end surfaces of the connecting pipe 5 and the air inlet pipe 4, so as to increase the tightness, prevent air leakage, the rubber rings 65 are formed on the surface of the membrane strip 62 in a bonding or hot melting mode, the membrane strip 64 is of a circular structure and is embedded in the rubber rings 65, and the membrane strip 64 is arranged on the membrane strip 62 in a bonding mode so as to be convenient to dismantle and replace, thereby repeatedly using the membrane strip 62 as a carrier, and further saving the use cost.
Preferably, as shown in fig. 8, the detection box 1 is arranged on an unmanned aerial vehicle, the air inlet pipe 4 is arranged in the middle above the unmanned aerial vehicle, and the exhaust pipe of the air pump 2 is arranged at the bottom of the unmanned aerial vehicle so as to prevent the exhaust from reentering the air inlet pipe.
Before sampling, the filter membrane 6 is moved to the detection port of the spectrometer 3 by rotating the roller 11 to measure the total phosphorus content of the blank filter membrane 64Measuring amountρ0, after the measurement is completed, the filter membrane 64 with the total phosphorus content measured is moved between the air inlet pipe 4 and the connecting pipe 5 by rotating the reel 11, and sampling can be started.
During sampling, the telescopic device 9 pushes the connecting pipe 5 to press the membrane belt 62 and the filter membrane 64 towards the air inlet pipe 4, the air pump 2 is started, the controller records the sampling time and the sampling flow of the air pump, after the sample collection is completed, the filter membrane 64 loaded with phosphorus pentoxide is moved to the detection port of the spectrometer 3 again through the rotation of the reel 11 so as to determine the total phosphorus content in the sample filter membrane 64ρ1) The controller calculates the sampling volume under the standard state according to the sampling flow and the timeV n ). The internal program of the controller calculates the phosphorus pentoxide concentration in the ambient air by the following formula.
Wherein:ρ（P 2 O 5 ) Is the mass concentration of phosphorus pentoxide in the ambient air, and mu g/m 3 ；
ρ1. The total phosphorus content in the sample filter membrane is mug;
ρ0 is the total phosphorus content in the blank filter membrane, and μg;
V n is the sampling volume in the standard state (101.325 kPa,273K), m 3 。
The foregoing description of the preferred embodiments of the invention is merely exemplary and is not intended to be exhaustive or limiting of the invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (10)
1. A detection device for phosphorus pentoxide in air, comprising: the portable detection box (1), be equipped with controller, aspiration pump (2), spectrum appearance (3) and sampling part in the detection box (1), its characterized in that;
the sampling part includes intake pipe (4), connecting pipe (5) and filter membrane (6), the lateral wall of locating detection case (1) is worn to locate by intake pipe (4), the inlet end of aspiration pump (2) is located to connecting pipe (5), and connecting pipe (5) are coaxial with intake pipe (4), connecting pipe (5) are along the axis removal setting, the both ends of filter membrane (6) are convoluteed respectively in two reel (11), two reel (11) adopt motor synchronous drive for drive filter membrane (6) are along length direction removal, and filter membrane (6) pass between connecting pipe (5) and intake pipe (4), the filter surface of filter membrane (6) is towards intake pipe (4), the detection mouth of spectrum appearance (3) is towards the filter surface of filter membrane (6), identification hole (61) have been seted up to equidistant position on filter membrane (6), be equipped with sensor (12) in detection case (1) for detect the position of identification hole (61).
2. The device for detecting phosphorus pentoxide in air according to claim 1, characterized in that a guide block (7) is arranged between the air inlet pipe (4) and the connecting pipe (5), through holes (71) are vertically formed in the guide block (7), the connecting pipe (5) and the end part of the air inlet pipe (4) all penetrate through the through holes (71), limit holes (72) are formed in the guide block (7) along the moving direction of the filter membrane (6), and the filter membrane (6) penetrates through the limit holes (72).
3. The device for detecting phosphorus pentoxide in air according to claim 1, wherein the inside of the end of the connecting tube (5) facing the filter membrane (6) is provided with a mesh plate (51), and the end face of the mesh plate (51) is flush with the end face of the connecting tube (5).
4. The detection device for phosphorus pentoxide in air according to claim 1, characterized in that a pressing plate (8) is arranged at the front end of a detection port of the detection box (1) corresponding to the spectrometer (3), a guide hole (81) is formed in the pressing plate (8) along the moving direction of the filter membrane (6), the filter membrane (6) passes through the guide hole (81), a through hole (82) is vertically formed in one side, facing the spectrometer (3), of the pressing plate (8), the detection port of the spectrometer (3) is arranged in the through hole (82) in a penetrating mode, and the pressing plate (8) is arranged in a moving mode along the axis direction of the through hole (82).
5. The device for detecting phosphorus pentoxide in air according to claim 4, characterized in that a telescopic device (9) is arranged in the detection box (1), a telescopic rod of the telescopic device (9) is parallel to the connecting pipe (5), a push rod (91) is arranged at the front end of the telescopic rod, one end of the push rod (91) is connected with the connecting pipe (5), the other end of the push rod (91) is in contact with an inclined block (83) on the outer wall of the pressing plate (8), the pressing plate (8) is provided with a spring (84), the telescopic direction of the spring (84) is consistent with the moving direction of the pressing plate (8), and when the push rod (91) drives the connecting pipe (5) to move towards the air inlet pipe (4), the push rod (91) pushes the pressing plate (8) to the spectrometer (3) through the inclined block (83), and at the moment, the spring (84) is stretched or compressed.
6. The device for detecting phosphorus pentoxide in air according to claim 1, characterized in that the filter membrane (6) is arranged in an L shape in the detection box (1), the corners of the filter membrane are guided by the supporting wheels (13), the air inlet pipe (4) and the spectrometer (3) are respectively arranged in the two straight sections of the filter membrane (6), the air suction pump (2) is arranged on the inner side of an L-shaped included angle, and the spectrometer (3) is arranged on the outer side of an L-shaped straight section.
7. The device for detecting phosphorus pentoxide in air according to claim 1, characterized in that the inlet end of the air inlet pipe (4) is provided with a top cover (41), a space is provided between the circumferential inner wall of the top cover (41) and the end surface of the air inlet pipe (4), and the lower edge of the top cover (41) extends to the side wall of the air inlet pipe (4).
8. The device for detecting phosphorus pentoxide in air according to claim 1, wherein the filter membrane (6) comprises a membrane belt (62), two ends of the membrane belt (62) are respectively wound on two winding wheels (11), a plurality of round holes (63) are formed in the membrane belt (62) in an array manner along the length direction, a filter membrane (64) is arranged on one side, facing the air inlet pipe (4), of the membrane belt (62), and the filter membrane (64) is coaxial with the round holes (63).
9. The device for detecting phosphorus pentoxide in air according to claim 8, characterized in that rubber rings (65) are arranged on the two sides of the membrane belt (62) corresponding to the circumference of the round holes (63), the outline of the rubber rings (65) is matched with the end faces of the air inlet pipe (4) and the connecting pipe (5), the filter membrane sheets (64) are of circular structures, are embedded in the rubber rings (65), and are arranged on the membrane belt (62) in an adhering mode.
10. The device for detecting phosphorus pentoxide in air according to claim 1, characterized in that the detection box (1) is arranged on an unmanned aerial vehicle, the air inlet pipe (4) is arranged in the middle of the upper part of the unmanned aerial vehicle, and the exhaust pipe of the air pump (2) is arranged at the bottom of the unmanned aerial vehicle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310448300.5A CN116223402B (en) | 2023-04-24 | 2023-04-24 | Detection device for phosphorus pentoxide in air |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310448300.5A CN116223402B (en) | 2023-04-24 | 2023-04-24 | Detection device for phosphorus pentoxide in air |
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| CN116223402A true CN116223402A (en) | 2023-06-06 |
| CN116223402B CN116223402B (en) | 2023-07-14 |
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