CN105181400B - A kind of sampling apparatus - Google Patents
A kind of sampling apparatus Download PDFInfo
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- CN105181400B CN105181400B CN201510698573.0A CN201510698573A CN105181400B CN 105181400 B CN105181400 B CN 105181400B CN 201510698573 A CN201510698573 A CN 201510698573A CN 105181400 B CN105181400 B CN 105181400B
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Abstract
The present invention proposes a kind of sampling apparatus, when sampling apparatus main body does not work, first end cap and the second end cap can be connected on to the both ends of tube body, and supported respectively on the first sealing ring and the second sealing ring by the first sealing station terrace and the second sealing station terrace of cone, and utilize and gradually compress the gradual precession of the first end cap and the second end cap, realize and cover the sealing of the first end cap and the second end cap to tube body, reach effective sealing to Sulfhydryl Cotton absorber.When sampling apparatus body of work, first end cap and the second end cap are pulled down, make the both ends open of tube body, and the air inlet pipe of air pump is screwed onto to the outlet side of tube body, supported on the second sealing ring by the 3rd sealing station terrace of cone, and gradually compressed using the gradual precession of air inlet pipe, realize the sealed connection by air inlet pipe and tube body, and then air pump can be opened and bypass air through tube body and pass through Sulfhydryl Cotton absorber, Sulfhydryl Cotton absorber, which absorbs the leaded particulate in air-flow, to be sampled.
Description
Present patent application is the divisional application of Chinese Patent Application No. 2015102871035, the application number of original application
For 2015102871035, the applying date is on May 29th, 2015, lead in a kind of entitled simple detection operation surrounding air
The method and sampling apparatus of content.
Technical field
The present invention relates to the detection method and device field of Lead in Air content, and in particular to a kind of sampling apparatus.
Background technology
It is detrimental to health numerous now in the chief-criminal with children's intelligence, lead is no small one of harm.Adjusted according to authority
Look into report to reveal, 500 times of ancients before the average lead tolerance in modern's body has substantially exceeded 1000！And the mankind lack master
Dynamic, effective safeguard procedures.According to investigations, average lead tolerance is generally higher than young man in many children's bodies now；Traffic-police is again
The people of more other industries is done harm to deeper by lead poisoning.After lead enters human body, in addition to being drained except part by excrement, sweat, remaining is several small
When after dissolve in blood, hinder the synthesis of blood, cause human body anaemia, headache, dizziness, weak, sleepy, constipation and limbs occur
Ache；There is the symptom such as metallic taste, artery sclerosis, digestive tract ulcer and fundus hemorrhage also related with lead contamination in some mouths.It is small
Then there is hypoevolutism, loss of appetite, inconvenient walking and constipation, insomnia in child's lead poisoning；If pupil, also with moving more, listen
Phenomena such as feeling obstacle, absent minded, feeblemindedness.This is because lead enters after human body invades cerebral nerve group by blood
Knit, make nutriment and oxygen supply deficiency, caused by causing brain tissue impairment, severe patient may cause permanent disbility.Particularly
Children are in growth and development stage, and to lead ratio, adult is more sensitive, have very strong affinity to nervous system into internal lead,
Therefore it is several times higher than adult to the uptake of lead, it is aggrieved to be particularly acute.Lead by placental barrier into can then be influenced in pregnant woman's body
Development of fetus, causes deformity etc..Effectively prevent lead poisoning, be current scientist exploring, one of the problem captured.As
Individual, it is highly important to strengthen taking precautions against, carrying out self-protection, but is hard to guard against in many cases, such as in workshop
Deng operation field, especially lead accumulator workshop, lead can be floated with various forms such as compounds in atmosphere, under long-term
Come, great threat can be caused to the health of worker, but but detected on existing market without practicable operation field
Method, this problems demand solve.
Sampling apparatus is a kind of gathering the usual means of atmospheric environment and plant site gas.It is widely used in duty
Industry health spot sampling and test in laboratory, and the unit such as atmosphere environment supervision, health and epidemic prevention, labour protection, scientific research use,
Also can be matched with related instrument.By analyzing sample gas, to understand the degree that environment is polluted by pernicious gas, and to
Related authorities provide the actual conditions of pollution, to take some countermeasures, so as to ensure that people have a living environment of health.
Sampling apparatus includes pump sampling apparatus and without pump sampling apparatus, wherein without pump sampling apparatus with portability is strong, behaviour
Make that the advantage two such as flexible, small application is wide, its structure generally comprises inner tube and the outer tube being placed on outside inner tube, and inner tube is built-in
Active charcoal, inner tube are laid with open-work, play a role for activated carbon and air contact, and switch of the outer tube as inner tube, does not make
Used time, outer tube entangle inner tube, prevent activated carbon and air contact, but in actual use, due to outer tube and inner tube
For movable contact, thus often occur between outer tube and inner tube it is poorly sealed, and caused by activated carbon effect has subtracted before use
Move back or even failed, or activated carbon occur due to poorly sealed after sample is absorbed again with air contact, and then adopt
Sample is contaminated, and index is unstable, seriously affects detection parameters, causes many troubles to people, practicality has much room for improvement.
In consideration of it, inventor furthers investigate the above problem, there is this case generation then.
The content of the invention
While there is portability and dismantled and assembled combination function it is an object of the invention to provide one kind, can also effectively it realize
Sampling absorbs the sealing of workspace, ensures work validity and samples the sampling apparatus of index stability.
In order to achieve the above object, the present invention uses such technical solution：
A kind of sampling apparatus, including sampling apparatus main body, be connected to sampling apparatus main body outlet side air pump and be arranged on
Gas flowmeter in the air inlet pipe of air pump；
The sampling apparatus main body includes tube body, absorbent cotton silk screen and is installed in absorbent cotton silk screen successively from outside to inside
Sulfhydryl Cotton absorber, the outlet side block of the tube body have copper mesh layers；
The inlet end of the tube body is equipped with the first end cap, and outlet side is equipped with the second end cap；The inlet end of the tube body
Side face formed with the first external screw thread, the first end lid is formed with the first internal thread to match with first external screw thread；
The side face of the outlet side of the tube body formed with the second external screw thread, the second end lid formed with the second external screw thread phase
The second internal thread matched somebody with somebody；
The inlet end side face of the tube body is equipped with the first sealing between first external screw thread and the second external screw thread
Ring, the medial surface of first end cap are described formed with the first thin diameter section close to base and the first wide section close to lid mouth
Formed with the first sealing station terrace mutually supported with first sealing ring between first thin diameter section and the first wide section, described
One sealing station terrace is the circular cone inclined-plane being tapered by lid mouth to base direction；First internal thread is formed at described first
Thin diameter section；
The outlet side side face of the tube body is equipped with the second sealing between second external screw thread and the first external screw thread
Ring, the medial surface of second end cap are described formed with the second thin diameter section close to base and the second wide section close to lid mouth
Formed with the second sealing station terrace mutually supported with second sealing ring between second thin diameter section and the second wide section, described
Two sealing station terraces are the circular cone inclined-plane being tapered by lid mouth to base direction；Second internal thread is formed at described second
Thin diameter section；
The air inlet of the air inlet pipe of the air pump is described formed with the 3rd internal thread to match with second external screw thread
Threeth wide section of the medial surface of air inlet pipe formed with the 3rd thin diameter section away from the second sealing ring and close second sealing ring,
Formed with the 3rd sealing station terrace mutually supported with second sealing ring, institute between 3rd thin diameter section and the 3rd wide section
It is the circular cone inclined-plane by air inlet taper inward to state the 3rd sealing station terrace；3rd internal thread is formed at the described 3rd
Thin diameter section.
The cross section on above-mentioned circular cone inclined-plane is indent camber line.
After adopting the above technical scheme, the present invention sampling apparatus, in actual use, when sampling apparatus main body not
During work, the first end cap and the second end cap can be connected on to the both ends of tube body, and pass through the first sealing station terrace of cone and the
Two sealing station terraces are supported on the first sealing ring and the second sealing ring respectively, and using by the first end cap and the second end cap by
Gradually precession and gradually compress, realize and cover the sealing to tube body of the first end cap and the second end cap, reach to Sulfhydryl Cotton absorber
Effective sealing, ensure that sample absorbs validity of the workspace before work, and absorb the index stability after sample.When adopting
During sampling device body of work, the first end cap and the second end cap are pulled down, make the both ends open of tube body, and by the air inlet pipe spiral shell of air pump
The outlet side of tube body is connected on, is supported by the 3rd sealing station terrace of cone on the second sealing ring, and utilizes air inlet pipe
Gradual precession and gradually compress, realize the sealed connection by air inlet pipe and tube body, and then air pump can be opened and bypass air through tube body
And passing through Sulfhydryl Cotton absorber, Sulfhydryl Cotton absorber, which absorbs the leaded particulate in air-flow, to be sampled, and gas flowmeter calculates
Go out the volume of air-flow, easy to subsequent statistical.Compared with prior art, sampling apparatus of the invention, it smooth can quickly realize and adopt
Sample and the whole flow process of detection, reach accurate efficient operation field lead content detection, have portability and dismantled and assembled combination work(
It while energy, can also effectively realize that sampling absorbs the sealing of workspace, ensure work validity and sample index stability.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of first state of the present invention；
Fig. 2 is the schematic cross-sectional view of the second state of the invention.
In figure：
1- sampling apparatus main body 11- tube bodies
111- copper mesh layers the first end caps of 112-
1121- the first internal thread the first thin diameter sections of 1122-
1123- the first wide section 1124- the first sealing station terraces
113- the second end cap the second internal threads of 1131-
1132- the second thin diameter section the second wide sections of 1133-
1134- the second sealing station terrace the first external screw threads of 114-
115- the second external screw thread the first sealing rings of 116-
117- the second sealing ring 12- absorbent cotton silk screens
13- Sulfhydryl Cotton absorbers
2- air pump 21- air inlet pipe
The 3rd thin diameter sections of the 3rd internal thread 212- of 211-
The 3rd sealing station terraces of the 3rd wide section 214- of 213-
3- gas flowmeters.
Embodiment
In order to further explain the technical solution of the present invention, it is described in detail below by specific embodiment.
The method of lead content in a kind of simple detection operation surrounding air of the present invention.
Embodiment one, includes the following steps：
(1) in operation field by the air of 1 cubic meter volume by sampling apparatus, absorbed using sampling apparatus in air
Leaded particulate is sampled；
(2) absorber that leaded particulate is absorbed in sampling apparatus is taken out, and is immersed in the sulfuric acid for containing that concentration is 50g/L
In the collecting bottle for the sodium chloride mixed solution that concentration is 120g/L, leaded particulate is all washed off, then takes out absorber simultaneously
Absorber is rinsed with other sulfuric acid and sodium chloride mixed solution, and the solution under rinse flow is all flowed into collecting bottle, this
Sample can make lead ion most possibly all in mixed solution；
(3) in order to strengthen the dissolved efficiency of lead ion, in 80 DEG C of water-bath, using the ultrasonic wave of 18khz frequencies with 10
It is secondary, 4 seconds every time, interval the leaded particulate in collecting bottle was crushed and disperseed in 5 seconds, lead ion is mixed with sulfuric acid and sodium chloride
Solution is closed to come into full contact with and be completely dissolved；
(4) in order to avoid the influence of impurity, by contaminant filter, pure lead ion solution is prepared；
(5) in order to ensure reaction validity and intuitive, and easy to measurement, by the above-mentioned lead ion solution of 2ml by up to
In the methylthymol blue chelating resin solid detection agent of lower instillation 100mm long；
(6) color change bar (blueness) length of methylthymol blue chelating resin solid detection agent is measured, slide calliper rule etc. can be used
Accurate survey tool, if it is 7mm to measure color change bar length, the mark with the change of standard color change bar length relative standard plumbum ion concentration
Directrix curve contrasts, when the color change bar length that 2ml standard lead ion solution is shown on standard curve is 7mm, standard plumbum ion concentration
For 0.1mg/ml, that is, show that the lead ion content in lead ion solution is 0.1mg/ml, if the cumulative volume of lead ion solution is
1500ml, then lead ion total amount is 0.15g, and it is 0.15g/ cubic metres that can calculate the lead content in operation field air.
Embodiment two, includes the following steps：
(1) in operation field by the air of 1.5 cubic meter volumes by sampling apparatus, absorbed using sampling apparatus in air
Leaded particulate sampled；
(2) absorber that leaded particulate is absorbed in sampling apparatus is taken out, and is immersed in the sulfuric acid for containing that concentration is 65g/L
In the collecting bottle for the sodium chloride mixed solution that concentration is 135g/L, leaded particulate is all washed off, then takes out absorber simultaneously
Absorber is rinsed with other sulfuric acid and sodium chloride mixed solution, and the solution under rinse flow is all flowed into collecting bottle, this
Sample can make lead ion most possibly all in mixed solution；
(3) in order to strengthen the dissolved efficiency of lead ion, in 85 DEG C of water-bath, using the ultrasonic wave of 19.5khz frequencies with 8
It is secondary, 4.5 seconds every time, interval the leaded particulate in collecting bottle was crushed and disperseed in 6 seconds, make lead ion and sulfuric acid and sodium chloride
Mixed solution comes into full contact with and is completely dissolved；
(4) in order to avoid the influence of impurity, by contaminant filter, pure lead ion solution is prepared；
(5) in order to ensure reaction validity and intuitive, and easy to measurement, by the above-mentioned lead ion solution of 2ml by up to
In the methylthymol blue chelating resin solid detection agent of lower instillation 105mm long；
(6) measure methylthymol blue chelating resin solid detection agent color change bar length, and with standard color change bar length
The standard curve contrast of relative standard's plumbum ion concentration change draws the lead ion content in lead ion solution, then calculates work
Lead content in the certain volume air of industry scene.
Embodiment three, includes the following steps：
(1) in operation field by the air of 2 cubic meter volumes by sampling apparatus, absorbed using sampling apparatus in air
Leaded particulate is sampled；
(2) absorber that leaded particulate is absorbed in sampling apparatus is taken out, and is immersed in the sulfuric acid for containing that concentration is 80g/L
In the collecting bottle for the sodium chloride mixed solution that concentration is 150g/L, leaded particulate is all washed off, then takes out absorber simultaneously
Absorber is rinsed with other sulfuric acid and sodium chloride mixed solution, and the solution under rinse flow is all flowed into collecting bottle, this
Sample can make lead ion most possibly all in mixed solution；
(3) in order to strengthen the dissolved efficiency of lead ion, in 90 DEG C of water-bath, using the ultrasonic wave of 21khz frequencies with 6
It is secondary, 5 seconds every time, interval the leaded particulate in collecting bottle was crushed and disperseed in 7 seconds, lead ion is mixed with sulfuric acid and sodium chloride
Solution is closed to come into full contact with and be completely dissolved；
(4) in order to avoid the influence of impurity, by contaminant filter, pure lead ion solution is prepared；
(5) in order to ensure reaction validity and intuitive, and easy to measurement, by the above-mentioned lead ion solution of 2ml by up to
In the methylthymol blue chelating resin solid detection agent of lower instillation 110mm long；
(6) measure methylthymol blue chelating resin solid detection agent color change bar length, and with standard color change bar length
The standard curve contrast of relative standard's plumbum ion concentration change draws the lead ion content in lead ion solution, then calculates work
Lead content in the certain volume air of industry scene.
Above-mentioned absorber is prepared,
Example IV：
S1：According to volume ratio 9 in beaker:9：1 sequentially adds thioglycolic acid, 2- methyl-tetrahydros furans and hydrosulphuric acid,
Add water to be uniformly mixed and mixed liquor is made；
S2：Above-mentioned mixed liquor is cooled to 20 DEG C；
S3：The above-mentioned mixed liquor of cooling is poured into the brown, wide-mouth bottle equipped with absorbent cotton, absorbent cotton is soaked, and covers
Sealing；
S4：By above-mentioned brown, wide-mouth bottle be placed in 35 DEG C of thermostatted water carry out 100 it is small when water-bath；
S5：Above-mentioned brown, wide-mouth bottle is taken out, and absorbent cotton is laid in the bottle,suction of two layers of Medium speed filter paper；
S6：Above-mentioned absorbent cotton is rinsed with deionized water, until flushing liquor is neutrality；
S7：Above-mentioned absorbent cotton is placed at 40 DEG C and is dried, makes absorbent cotton that there is adsorptivity and chemistry to leaded particulate etc.
Stability, that is, be made Sulfhydryl Cotton.
Embodiment five：
S1：According to volume ratio 12 in beaker:10.5：1.5 sequentially add thioglycolic acid, 2- methyl-tetrahydros furans and
Hydrosulphuric acid, add water be uniformly mixed mixed liquor is made；
S2：Above-mentioned mixed liquor is cooled to 22.5 DEG C；
S3：The above-mentioned mixed liquor of cooling is poured into the brown, wide-mouth bottle equipped with absorbent cotton, absorbent cotton is soaked, and covers
Sealing；
S4：By above-mentioned brown, wide-mouth bottle be placed in 37.5 DEG C of thermostatted water carry out 135 it is small when water-bath；
S5：Above-mentioned brown, wide-mouth bottle is taken out, and absorbent cotton is laid in the bottle,suction of two layers of Medium speed filter paper；
S6：Above-mentioned absorbent cotton is rinsed with deionized water, until flushing liquor is neutrality；
S7：Above-mentioned absorbent cotton is placed at 42.5 DEG C and is dried.
Embodiment six：
S1：According to volume ratio 15 in beaker:12：2 sequentially add thioglycolic acid, 2- methyl-tetrahydros furans and hydrogen sulphur
Acid, add water be uniformly mixed mixed liquor is made；
S2：Above-mentioned mixed liquor is cooled to 25 DEG C；
S3：The above-mentioned mixed liquor of cooling is poured into the brown, wide-mouth bottle equipped with absorbent cotton, absorbent cotton is soaked, and covers
Sealing；
S4：By above-mentioned brown, wide-mouth bottle be placed in 40 DEG C of thermostatted water carry out 170 it is small when water-bath；
S5：Above-mentioned brown, wide-mouth bottle is taken out, and absorbent cotton is laid in the bottle,suction of two layers of Medium speed filter paper；
S6：Above-mentioned absorbent cotton is rinsed with deionized water, until flushing liquor is neutrality；
S7：Above-mentioned absorbent cotton is placed at 45 DEG C and is dried.
Above-mentioned methylthymol blue chelating resin solid detection agent is by strong basic anion-exchange resin and methylthymol blue
According to weight ratio 1:1 synthesis；Or according to weight ratio 1:1.5 synthesis；Or according to weight ratio 1:2 synthesis, can so make highly basic the moon from
Sub-exchange resin and methylthymol blue highly effective chelating.
Above-mentioned methylthymol blue chelating resin solid detection agent is made in accordance with the following steps：
Embodiment seven：
A1：Above-mentioned strong basic anion-exchange resin is mixed with double distilled water, with 75 revolutions per seconds of speed in room temperature water-bath
Stirring 6 minutes；
A2：Above-mentioned methylthymol blue adds, and is stirred 25 minutes with 75 revolutions per seconds of speed in room temperature water-bath；
A3：Filtered, the solid portion of chelating is filtered out；
A4：Rinsed 9 seconds with double distilled water.
Embodiment eight：
A1：Above-mentioned strong basic anion-exchange resin is mixed with double distilled water, with 77 revolutions per seconds of speed in room temperature water-bath
Stirring 5.5 minutes；
A2：Above-mentioned methylthymol blue adds, and is stirred 22.5 minutes with 77 revolutions per seconds of speed in room temperature water-bath；
A3：Filtered, the solid portion of chelating is filtered out；
A4：Rinsed 12 seconds with double distilled water.
Embodiment nine：
A1：Above-mentioned strong basic anion-exchange resin is mixed with double distilled water, with 80 revolutions per seconds of speed in room temperature water-bath
Stirring 5 minutes；
A2：Above-mentioned methylthymol blue adds, and is stirred 20 minutes with 80 revolutions per seconds of speed in room temperature water-bath；
A3：Filtered, the solid portion of chelating is filtered out；
A4：Rinsed 15 seconds with double distilled water.
In above-mentioned steps (3), in the interval for carrying out each ultrasonic wave, above-mentioned mixed solution is carried out 0.5-1 times/
Second, 0.7 time/second or 1 time/second rock.Since ultrasonic wave cannot be long lasting for work, so so operation can be prevented effectively
Leaded particulate precipitates during ultrasonic wave pause, influences crushing and the dispersion effect of ultrasonic wave.
In above-mentioned steps (5), take the length of above-mentioned methylthymol blue chelating resin solid detection agent for 100mm,
105mm or 110mm, weight 150-165mg, is put into glass tube, and absorbent cotton closure in top and bottom positions and limits first
The length of base thymol blue chelating resin solid detection agent；Take above-mentioned lead ion solution 2.5ml, 2.7ml or 3ml.
In order to implement the drafting of standard curve, in above-mentioned steps (6), first with standard lead ion known to multigroup difference
The standard lead ion solution of concentration carries out standard with multigroup methylthymol blue chelating resin solid detection agent and instills experiment one by one,
Draw multigroup standard color change bar length value, and using standard plumbum ion concentration as abscissa, standard color change bar length value is vertical
Coordinate draws smooth standard curve.
In order to realize the detection of accurate objective, sampled with 5-10 above-mentioned sampling apparatuses, then prepared one by one respectively
Above-mentioned lead ion solution simultaneously carries out instillation test one by one with methylthymol blue chelating resin solid detection agent, and then obtains 5-10
Group color change bar length, contrast one by one is then carried out with standard curve and draws 5-10 group lead contents, can be by exceptional value or both ends extreme value
After rejecting, then the lead content being averaged in surveyed operation field certain volume air.
A kind of sampling apparatus of the present invention, as illustrated in fig. 1 and 2, including sampling apparatus main body 1, is connected to sampling apparatus master
The air pump 2 of the outlet side of body 1 and the gas flowmeter 3 in the air inlet pipe 21 of air pump 2；
Sampling apparatus main body 1 includes tube body 11, absorbent cotton silk screen 12 and is installed in absorbent cotton silk screen 12 successively from outside to inside
Interior Sulfhydryl Cotton absorber 13, the outlet side block of tube body 11 have copper mesh layers 111, and copper mesh layers 111 can be to 12 He of absorbent cotton silk screen
Internal Sulfhydryl Cotton absorber 13 is positioned, and is particularly avoided and is moved under the blowing force of air-flow to air pump 2；
The inlet end of tube body 11 is equipped with the first end cap 112, and outlet side is equipped with the second end cap 113；The air inlet of tube body 11
The side face at end is formed with the first external screw thread 114, and the first end cap 112 is formed with spiral shell in first to match with the first external screw thread 114
Line 1121, the first end cap 112 can rely on the cooperation of the first external screw thread 114 and the first internal thread 1121, realize and 11 air inlet of tube body
End is spirally connected；The side face of the outlet side of tube body 11 formed with the second external screw thread 115, the second end cap 113 formed with the second outer spiral shell
The second internal thread 1131 that line 115 matches, the second end cap 113 can rely on the second external screw thread 115 and the second internal thread 1131
Coordinate, realization is spirally connected with 11 outlet side of tube body；
The inlet end side face of tube body 11 is equipped with the first sealing between the first external screw thread 114 and the second external screw thread 115
Ring 116, the medial surface of the first end cap 112 is formed with the first thin diameter section 1122 close to base and the first particle size close to lid mouth
Section 1123, it is first close formed with being supported with 116 phase of the first sealing ring between the first thin diameter section 1122 and the first wide section 1123
Step surface 1124 is sealed, the first sealing station terrace 1124 is the circular cone inclined-plane being tapered by lid mouth to base direction；Spiral shell in first
Line 1121 is formed at the first thin diameter section 1122；
The outlet side side face of tube body 11 is equipped with the second sealing between the second external screw thread 115 and the first external screw thread 114
Ring 117, the medial surface of the second end cap 113 is formed with the second thin diameter section 1132 close to base and the second particle size close to lid mouth
Section 1133, it is second close formed with being supported with 117 phase of the second sealing ring between the second thin diameter section 1132 and the second wide section 1133
Step surface 1134 is sealed, the second sealing station terrace 1134 is the circular cone inclined-plane being tapered by lid mouth to base direction；Spiral shell in second
Line 1131 is formed at the second thin diameter section 1132；
The air inlet of the air inlet pipe 21 of air pump 2 formed with the 3rd internal thread 211 to match with the second external screw thread 115, into
Tracheae 21 can rely on the cooperation of the second external screw thread 115 and the 3rd internal thread 211, and realization is spirally connected with 11 outlet side of tube body；Air inlet
The medial surface of pipe 21 is formed with the 3rd thin diameter section 212 away from the second sealing ring 117 and the 3rd close to the second sealing ring 117
Wide section 213, it is the 3rd close formed with being supported with 117 phase of the second sealing ring between the 3rd thin diameter section 212 and the 3rd wide section 213
Step surface 214 is sealed, the 3rd sealing station terrace 214 is the circular cone inclined-plane by air inlet taper inward；3rd internal thread, 211 shape
Tri- thin diameter sections 212 of Cheng Yu.The present invention in actual use, can be by the first end cap when sampling apparatus main body 1 does not work
112 and second end cap 113 be screwed onto the both ends of tube body 11, and pass through the first sealing station terrace 1124 and the second sealing of cone
Step surface 1134 is supported on the first sealing ring 116 and the second sealing ring 117 respectively, and is utilized the first end cap 112 and second
The gradual precession of end cap 113 and gradually compress, realize and cover the sealing to tube body 11 of the first end cap 112 and the second end cap 113,
Reach effective sealing to Sulfhydryl Cotton absorber 13, ensure that sample absorbs validity of the workspace before work, and absorb sample
Index stability after product.When sampling apparatus main body 1 works, the first end cap 112 and the second end cap 113 are pulled down, make tube body
11 both ends open, and the air inlet pipe 21 of air pump 2 is screwed onto to the outlet side of tube body 11, pass through the 3rd sealed step of cone
Face 214 is supported on the second sealing ring 117, and is gradually compressed using the gradual precession of air inlet pipe 21, realizes air inlet pipe 21
With the sealed connection of tube body 11, and then air pump 2 can be opened and bypass air through tube body 11 and by Sulfhydryl Cotton absorber 13, Sulfhydryl Cotton
Absorber 13, which absorbs the leaded particulate in air-flow, to be sampled, and gas flowmeter 3 calculates the volume of air-flow, easy to subsequently unite
Meter.Concrete structure can be, formed with the annular groove for fixing the first sealing ring 116 and the second sealing ring 117 on the side face of tube body 11.
Air inlet pipe 21 is to be rotatably connected with the main part of air pump 2, and then easy to be spirally connected with tube body 11.
In order to increase the first sealing station terrace 1124, the second sealing station terrace 1134 and the 3rd sealing station terrace 214 and
The mutual cooperation degree of one sealing ring 116 and the second sealing ring 117, increases contact area, and then strengthens sealing performance, preferably
Ground, the horizontal stroke of the first sealing station terrace 1124 of circular cone bevel-faced form, the second sealing station terrace 1134 and the 3rd sealing station terrace 214
Section is indent camber line.I.e. circular cone inclined-plane and the first sealing ring 116 and the second sealing ring 117 can form the compression relation of flexibility.
The method of lead content in the simple detection operation surrounding air of the present invention, the concrete form on circular cone inclined-plane also can basis
Actual requirement is adjusted and designs；First sealing ring and the second sealing ring are preferably elastomeric material, its concrete form and material
Deng can be adjusted and design according to actual requirement；First internal thread, the second internal thread, the 3rd internal thread, the first external screw thread,
Second external screw thread, the first sealing station terrace, the second sealing station terrace, the 3rd sealing station terrace, the first thin diameter section, the first particle size
Section, the second thin diameter section, the second wide section and the first end cap, the second end cap, copper mesh layers, air inlet pipe, tube body, absorbent cotton silk screen,
Sulfhydryl Cotton absorber, the concrete form of air pump and gas flow meter, setting position etc. can be adjusted and set according to actual requirement
Meter.
The product form of the present invention is not limited to this case diagram and embodiment, anyone carries out it the appropriate of similar thinking
Change or modification, all should be regarded as not departing from the patent category of the present invention.
Claims (2)
- A kind of 1. sampling apparatus, it is characterised in that：Gas including sampling apparatus main body, the outlet side for being connected to sampling apparatus main body Pump and the gas flowmeter in the air inlet pipe of air pump；The sampling apparatus main body includes tube body, absorbent cotton silk screen and the sulfydryl being installed in absorbent cotton silk screen successively from outside to inside Cotton absorber, the outlet side block of the tube body have copper mesh layers；The inlet end of the tube body is equipped with the first end cap, and outlet side is equipped with the second end cap；The week of the inlet end of the tube body Face is formed with the first external screw thread, and the first end lid is formed with the first internal thread to match with first external screw thread；It is described The side face of the outlet side of tube body is formed with the second external screw thread, and the second end lid with second external screw thread formed with matching Second internal thread；The inlet end side face of the tube body is equipped with the first sealing ring between first external screw thread and the second external screw thread, institute The medial surface of the first end cap is stated formed with the first thin diameter section close to base and the first wide section close to lid mouth, described first Formed with the first sealing station terrace mutually supported with first sealing ring between thin diameter section and the first wide section, described first is close Envelope step surface is the circular cone inclined-plane being tapered by lid mouth to base direction；First internal thread is formed at first thin footpath Section；The outlet side side face of the tube body is equipped with the second sealing ring between second external screw thread and the first external screw thread, institute The medial surface of the second end cap is stated formed with the second thin diameter section close to base and the second wide section close to lid mouth, described second Formed with the second sealing station terrace mutually supported with second sealing ring between thin diameter section and the second wide section, described second is close Envelope step surface is the circular cone inclined-plane being tapered by lid mouth to base direction；Second internal thread is formed at second thin footpath Section；The air inlet of the air inlet pipe of the air pump is formed with the 3rd internal thread to match with second external screw thread, the air inlet The medial surface of pipe is described formed with the 3rd thin diameter section away from the second sealing ring and the 3rd wide section close to the second sealing ring Formed with the 3rd sealing station terrace mutually supported with second sealing ring between 3rd thin diameter section and the 3rd wide section, described Three sealing station terraces are the circular cone inclined-plane by air inlet taper inward；3rd internal thread is formed at the 3rd thin footpath Section.
- A kind of 2. sampling apparatus according to claim 1, it is characterised in that：The cross section on above-mentioned circular cone inclined-plane is imploded arcs Line.
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| CN201510698573.0A CN105181400B (en) | 2015-05-29 | 2015-05-29 | A kind of sampling apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510698573.0A CN105181400B (en) | 2015-05-29 | 2015-05-29 | A kind of sampling apparatus |
| CN201510287103.5A CN104865345B (en) | 2015-05-29 | 2015-05-29 | A kind of method of simple detection operating environment Lead in Air content |
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| CN201510287103.5A Division CN104865345B (en) | 2015-05-29 | 2015-05-29 | A kind of method of simple detection operating environment Lead in Air content |
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| CN105181400B true CN105181400B (en) | 2018-05-11 |
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| CN201510698573.0A Active CN105181400B (en) | 2015-05-29 | 2015-05-29 | A kind of sampling apparatus |
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| CN108801711A (en) * | 2017-05-05 | 2018-11-13 | 中国辐射防护研究院 | A kind of aerosol sampler quickly connected |
| CN109541149B (en) * | 2018-12-29 | 2023-06-06 | 广东工业大学 | A bio-type atmospheric heavy metal pollution detection and discrimination device and application |
| WO2022121006A1 (en) * | 2020-12-07 | 2022-06-16 | 吴江市徐氏机电有限公司 | Dust separation device of dust collector |
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| US4046014A (en) * | 1975-06-20 | 1977-09-06 | Boehringer John R | Sealable activated charcoal gas sampler |
| CN1004582B (en) * | 1987-10-14 | 1989-06-21 | 北京市理化分析测试中心 | Simple and quick detecting tube for determining harmful metallic lead in water |
| CN103115874B (en) * | 2013-01-24 | 2014-11-05 | 昆明理工大学 | Method for detecting absorption effect of absorbent by adopting sulfydryl cotton |
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| CN86100804A (en) * | 1986-02-03 | 1987-03-25 | 中国科学院长春地理研究所 | A kind of water sampling and mercapto-cotton enrichment tripping device |
| CN203132886U (en) * | 2012-12-31 | 2013-08-14 | 中国人民解放军63653部队 | Double-filter membrane active carbon box used for sampling Rn-Tn and daughter of Rn-Tn |
| KR101467398B1 (en) * | 2013-07-17 | 2014-12-02 | 김중구 | Multitude Sampling Device for Measurement of Air Pollution |
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| CN104458354A (en) * | 2014-12-26 | 2015-03-25 | 广东汉卫检测科技有限公司 | Volatile organic gas diffusion sampling tube |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104865345A (en) | 2015-08-26 |
| CN104865345B (en) | 2016-04-20 |
| CN105181400A (en) | 2015-12-23 |
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Denomination of invention: Sampling device Effective date of registration: 20200519 Granted publication date: 20180511 Pledgee: Agricultural Bank of China Limited Fuzhou Taijiang sub branch Pledgor: FUJIAN TUOPU DETECTION TECHNOLOGY Co.,Ltd. Registration number: Y2020350000034 |
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