CN204630784U - A kind of sampling apparatus - Google Patents
A kind of sampling apparatus Download PDFInfo
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- CN204630784U CN204630784U CN201520361529.6U CN201520361529U CN204630784U CN 204630784 U CN204630784 U CN 204630784U CN 201520361529 U CN201520361529 U CN 201520361529U CN 204630784 U CN204630784 U CN 204630784U
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Abstract
The utility model proposes a kind of sampling apparatus, when sampling apparatus main body does not work, first end cap and the second end cap can be screwed onto the two ends of body, and support respectively on the first sealing ring and the second sealing ring by conical first sealing station terrace and the second sealing station terrace, and can compress gradually, realize the sealing capping to body.When sampling apparatus body of work, two end cap is pulled down, make the both ends open of body, and the draft tube of air pump is screwed onto the outlet side of body, supported on the second sealing ring by conical 3rd sealing station terrace, and can compress gradually, realize being tightly connected draft tube and body, and then air pump can be opened sample, gas meter calculates the volume of air-flow, is convenient to subsequent statistical.Therefore, the utility model has portability and dismantled and assembled combination function, can effectively realize sampling absorbing the sealing of workspace, ensures work validity and sampling index stability, operability, dirigibility and practical.
Description
Technical field
The utility model relates to the pick-up unit field of Lead in Air content, is specifically related to a kind of sampling apparatus applied in the method for detection operating environment Lead in Air content.
Background technology
Be detrimental to health with in the chief-criminal of children's intelligence numerous now, lead is no small one of harm.The average lead tolerance in modern human body has substantially exceeded 500 times of ancients before 1000 according to authoritative survey report! And the mankind lack initiatively, effective safeguard procedures.According to investigations, the interior average lead tolerance of present a lot of children's body is generally higher than young man; Traffic-police is darker by lead poisoning evil compared with the people of other industry again.After lead enters human body, except part is by except ight soil, sweat excretion, all the other dissolve in blood after a few hours, hinder the synthesis of blood, cause human body anaemia, occur headache, dizzy, weak, sleepy, constipation and limb aching pain etc.; Have metallic taste in some mouths, artery sclerosis, digestive tract ulcer are also relevant with lead contamination with symptoms such as fundus hemorrhages.Then there is hypoevolutism, poor appetite, inconvenient walking and constipation, insomnia in child's saturnism; If pupil, also with the phenomenon such as many dynamic, dysacousis, absent minded, feeblemindedness.This is because lead invades cerebral nerve tissue by blood after entering human body, make nutriment and oxygen supply deficiency, cause caused by brain tissue impairment, severe patient may cause permanent disbility.Particularly children are in growth and development stage, and to lead ratio, adult is more responsive, and the lead entered in body has very strong affinity to nervous system, therefore to the uptake of lead than high several times of adult, are injured particularly serious.Lead enters in pregnant woman's body then by placental barrier, can affect development of fetus, causes deformity etc.Effectively prevent saturnism, be that current scientist explores, one of the problem of capturing.As individual; strengthen to guard against, to carry out self-protection be very important; but be hard to guard against in a lot of situation; such as at operation fields such as workshops, especially lead accumulator workshop, plumbous meeting is in atmosphere floating with various forms such as compounds; get off for a long time; can cause great threat to the healthy of workman, but existing market but not have practicable operation field detection method, this problems demand solves.
Sampling apparatus is a kind of usual means in order to gather atmospheric environment and plant site gas.It is widely used in occupational health spot sampling and test in laboratory, and the unit such as atmosphere environment supervision, health and epidemic prevention, labour protection, scientific research uses, and also can support the use with relevant instrument.By to sample gas analysis, to understand the degree that environment is polluted by harmful gas, and provide the actual conditions of pollution to competent departments concerned, to take some countermeasures, thus ensure that people have a healthy living environment.
Sampling apparatus includes pump sampling apparatus and without pump sampling apparatus, wherein strong with portability without pump sampling apparatus, flexible operation, the advantages such as volume is little two are applied more extensive, its structure roughly comprises interior pipe and is placed on the outer tube outside interior pipe, interior pipe is built with activated charcoal, interior pipe is laid with open-work, contact with air for activated charcoal and play a role, outer tube is as the switch of interior pipe, when not using, interior pipe box is lived by outer tube, prevent activated charcoal from contacting with air, but in actual use, because outer tube and interior pipe are movable contact, so often occur poorly sealed between outer tube and interior pipe, and the activated charcoal caused before use effect go down and even lost efficacy, or due to poorly sealed and occur that activated charcoal contacts with air again after absorption sample, and then occur that sampling is contaminated, index is unstable, have a strong impact on detected parameters, many troubles are caused to people, practicality has much room for improvement.
Given this, inventor furthers investigate the problems referred to above, then has this case to produce.
Utility model content
The purpose of this utility model is to provide one to have portability and dismantled and assembled combination function, can effectively realize sampling absorbing the sealing of workspace, ensures work validity and sampling index stability, operability, dirigibility and practical sampling apparatus.
In order to achieve the above object, the utility model adopts such technical scheme:
A kind of sampling apparatus, the gas meter comprising sampling apparatus main body, be connected to the air pump of the outlet side of sampling apparatus main body and be located in the draft tube of air pump;
The Sulfhydryl Cotton absorber that described sampling apparatus main body comprises body, absorbent cotton silk screen from outside to inside successively and is installed in absorbent cotton silk screen, the outlet side block of described body has copper mesh layers;
The inlet end of described body is equipped with the first end cap, and outlet side is equipped with the second end cap; The side face of the inlet end of described body is formed with the first external thread, and described first end cap is formed with the first internal thread matched with described first external thread; The side face of the outlet side of described body is formed with the second external thread, and described second end cap is formed with the second internal thread matched with described second external thread;
The inlet end side face of described body is provided with the first sealing ring be between described first external thread and the second external thread, the medial surface of described first end cap is formed with the first thin diameter section near the lid end and the first wide section near lid mouth, be formed with the first sealing station terrace supported mutually with described first sealing ring between described first thin diameter section and the first wide section, described first sealing station terrace is to lid tapered circular cone inclined-plane, direction, the end by lid mouth; Described first female thread is formed in described first thin diameter section;
The outlet side side face of described body is provided with the second sealing ring be between described second external thread and the first external thread, the medial surface of described second end cap is formed with the second thin diameter section near the lid end and the second wide section near lid mouth, be formed with the second sealing station terrace supported mutually with described second sealing ring between described second thin diameter section and the second wide section, described second sealing station terrace is to lid tapered circular cone inclined-plane, direction, the end by lid mouth; Described second female thread is formed in described second thin diameter section;
The air intake opening of the draft tube of described air pump is formed with the 3rd internal thread matched with described second external thread, the medial surface of described draft tube is formed with the 3rd thin diameter section away from the second sealing ring and the 3rd wide section near the second sealing ring, be formed with the 3rd sealing station terrace supported mutually with described second sealing ring between described 3rd thin diameter section and the 3rd wide section, described 3rd sealing station terrace is by the inside tapered circular cone inclined-plane of air intake opening; Described 3rd female thread is formed in described 3rd thin diameter section.
The xsect of above-mentioned tapered slope is indent camber line.
After adopting technique scheme, sampling apparatus of the present utility model, break through the structural form of traditional sampling device, in actual use, when sampling apparatus main body does not work, first end cap and the second end cap can be screwed onto the two ends of body, and support respectively on the first sealing ring and the second sealing ring by conical first sealing station terrace and the second sealing station terrace, and utilize the precession gradually of the first end cap and the second end cap and compress gradually, realize the first end cap and the second end cap the sealing capping of body, reach the effective sealing to Sulfhydryl Cotton absorber, ensure the validity of absorption of sample workspace before work, and the index stability after absorption sample.When sampling apparatus body of work, first end cap and the second end cap are pulled down, make the both ends open of body, and the draft tube of air pump is screwed onto the outlet side of body, support on the second sealing ring by conical 3rd sealing station terrace, and utilize the precession gradually of draft tube and compress gradually, realize being tightly connected draft tube and body, and then air pump can be opened make air by body and through Sulfhydryl Cotton absorber, leaded particulate in air-flow absorbs by Sulfhydryl Cotton absorber samples, gas meter calculates the volume of air-flow, is convenient to subsequent statistical.Compared with prior art, sampling apparatus of the present utility model, it has portability and dismantled and assembled combination function, can effectively realize sampling absorbing the sealing of workspace, ensures work validity and sampling index stability, operability, dirigibility and practical.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model first state;
Fig. 2 is the sectional structure schematic diagram of the utility model second state.
In figure:
1-sampling apparatus main body 11-body
111-copper mesh layers 112-first end cap
1121-first internal thread 1122-first thin diameter section
1123-first wide section 1124-first sealing station terrace
113-second end cap 1131-second internal thread
1132-second thin diameter section 1133-second wide section
1134-second sealing station terrace 114-first external thread
115-second external thread 116-first sealing ring
117-second sealing ring 12-absorbent cotton silk screen
13-Sulfhydryl Cotton absorber
2-air pump 21-draft tube
211-the 3rd internal thread 212-the 3rd thin diameter section
213-the 3rd wide section 214-the 3rd sealing station terrace
3-gas meter.
Embodiment
In order to explain the technical solution of the utility model further, be described in detail below by specific embodiment.
A kind of sampling apparatus of the present utility model, the gas meter 3 as illustrated in fig. 1 and 2, comprising sampling apparatus main body 1, be connected to the air pump 2 of the outlet side of sampling apparatus main body 1 and be located in the draft tube 21 of air pump 2;
The Sulfhydryl Cotton absorber 13 that sampling apparatus main body 1 comprises body 11, absorbent cotton silk screen 12 from outside to inside successively and is installed in absorbent cotton silk screen 12, the outlet side block of body 11 has copper mesh layers 111, copper mesh layers 111 can position absorbent cotton silk screen 12 and inner Sulfhydryl Cotton absorber 13, especially avoids being moved to air pump 2 under the blowing force of air-flow;
The inlet end of body 11 is equipped with the first end cap 112, and outlet side is equipped with the second end cap 113; The side face of the inlet end of body 11 is formed with the first external thread 114, first end cap 112 is formed with the first internal thread 1121 matched with the first external thread 114, first end cap 112 can rely on the cooperation of the first external thread 114 and the first internal thread 1121, and realization is spirally connected with body 11 inlet end; The side face of the outlet side of body 11 is formed with the second external thread 115, second end cap 113 is formed with the second internal thread 1131 matched with the second external thread 115, second end cap 113 can rely on the cooperation of the second external thread 115 and the second internal thread 1131, and realization is spirally connected with body 11 outlet side;
The inlet end side face of body 11 is provided with the first sealing ring 116 be between the first external thread 114 and the second external thread 115, the medial surface of the first end cap 112 is formed with the first thin diameter section 1122 near the lid end and the first wide section 1123 near lid mouth, being formed with the first sealing station terrace 1124, the first sealing station terrace 1124 supported mutually with the first sealing ring 116 between first thin diameter section 1122 and the first wide section 1123 is to covering tapered circular cone inclined-plane, direction, the end by lid mouth; First internal thread 1121 is formed at the first thin diameter section 1122;
The outlet side side face of body 11 is provided with the second sealing ring 117 be between the second external thread 115 and the first external thread 114, the medial surface of the second end cap 113 is formed with the second thin diameter section 1132 near the lid end and the second wide section 1133 near lid mouth, being formed with the second sealing station terrace 1134, the second sealing station terrace 1134 supported mutually with the second sealing ring 117 between second thin diameter section 1132 and the second wide section 1133 is to covering tapered circular cone inclined-plane, direction, the end by lid mouth; Second internal thread 1131 is formed at the second thin diameter section 1132;
The air intake opening of the draft tube 21 of air pump 2 is formed with the 3rd internal thread 211 matched with the second external thread 115, and draft tube 21 can rely on the cooperation of the second external thread 115 and the 3rd internal thread 211, and realization is spirally connected with body 11 outlet side; The medial surface of draft tube 21 is formed with the 3rd thin diameter section 212 away from the second sealing ring 117 and the 3rd wide section 213 near the second sealing ring 117, being formed with the 3rd sealing station terrace the 214, three sealing station terrace 214 supported mutually with the second sealing ring 117 between 3rd thin diameter section 212 and the 3rd wide section 213 is by the inside tapered circular cone inclined-plane of air intake opening; 3rd internal thread 211 is formed at the 3rd thin diameter section 212.The utility model in actual use, when sampling apparatus main body does not work, first end cap 112 and the second end cap 113 can be screwed onto the two ends of body 11, and support respectively on the first sealing ring 116 and the second sealing ring 117 by conical first sealing station terrace 1124 and the second sealing station terrace 1134, and utilize the precession gradually of the first end cap 112 and the second end cap 113 and compress gradually, realize the sealing capping by the first end cap 112 and the second end cap 113 pairs of bodys 11, reach the effective sealing to Sulfhydryl Cotton absorber 13, ensure the validity of absorption of sample workspace before work, and the index stability after absorption sample.When sampling apparatus body of work, first end cap 112 and the second end cap 113 are pulled down, make the both ends open of body 11, and the draft tube 21 of air pump 2 is screwed onto the outlet side of body 11, support on the second sealing ring 117 by conical 3rd sealing station terrace 214, and utilize the precession gradually of draft tube 21 and compress gradually, realize being tightly connected draft tube 21 and body 11, and then air pump 2 can be opened make air by body 11 and through Sulfhydryl Cotton absorber 13, leaded particulate in air-flow absorbs by Sulfhydryl Cotton absorber 13 samples, gas meter 3 calculates the volume of air-flow, be convenient to subsequent statistical.Concrete structure can be, and the side face of body 11 is formed with the ring groove fixing the first sealing ring 116 and the second sealing ring 117.Draft tube 21 is be rotatably connected with the main part of air pump 2, and then is convenient to and being spirally connected of body 11.
In order to increase the degree that cooperatively interacts of the first sealing station terrace 1124, second sealing station terrace 1134 and the 3rd sealing station terrace 214 and the first sealing ring 116 and the second sealing ring 117, enlarge active surface, and then enhancing sealing property, preferably, the first sealing station terrace 1124, second sealing station terrace 1134 of tapered slope form and the xsect of the 3rd sealing station terrace 214 are indent camber line.Namely tapered slope and the first sealing ring 116 and the second sealing ring 117 can form flexible compression relation.
Based on the method for a kind of simple detection operating environment Lead in Air content of the present utility model.
Embodiment one, comprises the steps:
(1) at operation field, the air of 1 cubic meter volume is passed through sampling apparatus, the leaded particulate utilizing sampling apparatus to absorb in air is sampled;
(2) absorber absorbing leaded particulate in sampling apparatus is taken out, and be immersed in sulfuric acid that splendid attire concentration is 50g/L and concentration is in the collecting bottle of sodium chloride mixed solution of 120g/L, leaded particulate is all washed off, then take out absorber and rinse absorber with other sulfuric acid and sodium chloride mixed solution, and the solution under making flushing flow all flows in collecting bottle, lead ion can be made so all to be in most possibly in mixed solution;
(3) in order to strengthen the dissolved efficiency of lead ion, in the water-bath of 80 DEG C, utilize the ultrasound wave of 18khz frequency with 10 times, each 4 seconds, interval pulverizes the leaded particulate in collecting bottle and disperses for 5 seconds, makes lead ion and sulfuric acid fully contact with sodium chloride mixed solution and dissolve completely;
(4) in order to avoid the impact of impurity, by contaminant filter, pure lead ion solution is prepared;
(5) in order to ensure validity and the intuitive of reaction, and being convenient to measure, above-mentioned for 2ml lead ion solution being instilled in the long methylthymol blue chelating resin solid detection agent of 100mm from top to bottom;
(6) color change bar (blueness) length of methylthymol blue chelating resin solid detection agent is measured, the accurate survey instruments such as slide calliper rule can be used, if recording color change bar length is 7mm, the typical curve changed with standard color change bar length relative standard plumbum ion concentration contrasts, when color change bar length typical curve showing 2ml standard lead ion solution is 7mm, standard plumbum ion concentration is 0.1mg/ml, namely 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, the lead content that can calculate in operation field air is 0.15g/ cubic meter.
Embodiment two, comprises the steps:
(1) at operation field, the air of 1.5 cubic meter volume is passed through sampling apparatus, the leaded particulate utilizing sampling apparatus to absorb in air is sampled;
(2) absorber absorbing leaded particulate in sampling apparatus is taken out, and be immersed in sulfuric acid that splendid attire concentration is 65g/L and concentration is in the collecting bottle of sodium chloride mixed solution of 135g/L, leaded particulate is all washed off, then take out absorber and rinse absorber with other sulfuric acid and sodium chloride mixed solution, and the solution under making flushing flow all flows in collecting bottle, lead ion can be made so all to be in most possibly in mixed solution;
(3) in order to strengthen the dissolved efficiency of lead ion, in the water-bath of 85 DEG C, utilize the ultrasound wave of 19.5khz frequency with 8 times, each 4.5 seconds, interval pulverizes the leaded particulate in collecting bottle and disperses for 6 seconds, makes lead ion and sulfuric acid fully contact with sodium chloride mixed solution and dissolve completely;
(4) in order to avoid the impact of impurity, by contaminant filter, pure lead ion solution is prepared;
(5) in order to ensure validity and the intuitive of reaction, and being convenient to measure, above-mentioned for 2ml lead ion solution being instilled in the long methylthymol blue chelating resin solid detection agent of 105mm from top to bottom;
(6) the color change bar length of methylthymol blue chelating resin solid detection agent is measured, and contrast with the typical curve that standard color change bar length relative standard plumbum ion concentration changes the lead ion content drawn in lead ion solution, then calculate the lead content in operation field certain volume air.
Embodiment three, comprises the steps:
(1) at operation field, the air of 2 cubic meter volume is passed through sampling apparatus, the leaded particulate utilizing sampling apparatus to absorb in air is sampled;
(2) absorber absorbing leaded particulate in sampling apparatus is taken out, and be immersed in sulfuric acid that splendid attire concentration is 80g/L and concentration is in the collecting bottle of sodium chloride mixed solution of 150g/L, leaded particulate is all washed off, then take out absorber and rinse absorber with other sulfuric acid and sodium chloride mixed solution, and the solution under making flushing flow all flows in collecting bottle, lead ion can be made so all to be in most possibly in mixed solution;
(3) in order to strengthen the dissolved efficiency of lead ion, in the water-bath of 90 DEG C, utilize the ultrasound wave of 21khz frequency with 6 times, each 5 seconds, interval pulverizes the leaded particulate in collecting bottle and disperses for 7 seconds, makes lead ion and sulfuric acid fully contact with sodium chloride mixed solution and dissolve completely;
(4) in order to avoid the impact of impurity, by contaminant filter, pure lead ion solution is prepared;
(5) in order to ensure validity and the intuitive of reaction, and being convenient to measure, above-mentioned for 2ml lead ion solution being instilled in the long methylthymol blue chelating resin solid detection agent of 110mm from top to bottom;
(6) the color change bar length of methylthymol blue chelating resin solid detection agent is measured, and contrast with the typical curve that standard color change bar length relative standard plumbum ion concentration changes the lead ion content drawn in lead ion solution, then calculate the lead content in operation field certain volume air.
Above-mentioned absorber is preparation like this,
Embodiment four:
S1: add thioglycolic acid, 2-methyl-tetrahydro furans and hydrosulphuric acid successively according to volume ratio 9:9:1 in beaker, then add water to mix and make mixed liquor;
S2: above-mentioned mixed liquor is cooled to 20 DEG C;
S3: the above-mentioned mixed liquor of cooling is poured into and is equipped with in the brown, wide-mouth bottle of absorbent cotton, absorbent cotton is soaked, and lidstock;
S4: the thermostatted water above-mentioned brown, wide-mouth bottle being placed in 35 DEG C carries out the water-bath of 100 hours;
S5: take out above-mentioned brown, wide-mouth bottle, and absorbent cotton is laid in the bottle,suction of two-layer Medium speed filter paper;
S6: rinse above-mentioned absorbent cotton with deionized water, until washing fluid is neutral;
S7: dry at above-mentioned absorbent cotton is placed in 40 DEG C, makes absorbent cotton have adsorbability to leaded particulate etc. and chemical stability, i.e. obtained Sulfhydryl Cotton.
Embodiment five:
S1: add thioglycolic acid, 2-methyl-tetrahydro furans and hydrosulphuric acid successively according to volume ratio 12:10.5:1.5 in beaker, then add water to mix and make mixed liquor;
S2: above-mentioned mixed liquor is cooled to 22.5 DEG C;
S3: the above-mentioned mixed liquor of cooling is poured into and is equipped with in the brown, wide-mouth bottle of absorbent cotton, absorbent cotton is soaked, and lidstock;
S4: the thermostatted water above-mentioned brown, wide-mouth bottle being placed in 37.5 DEG C carries out the water-bath of 135 hours;
S5: take out above-mentioned brown, wide-mouth bottle, and absorbent cotton is laid in the bottle,suction of two-layer Medium speed filter paper;
S6: rinse above-mentioned absorbent cotton with deionized water, until washing fluid is neutral;
S7: dry at above-mentioned absorbent cotton is placed in 42.5 DEG C.
Embodiment six:
S1: add thioglycolic acid, 2-methyl-tetrahydro furans and hydrosulphuric acid successively according to volume ratio 15:12:2 in beaker, then add water to mix and make mixed liquor;
S2: above-mentioned mixed liquor is cooled to 25 DEG C;
S3: the above-mentioned mixed liquor of cooling is poured into and is equipped with in the brown, wide-mouth bottle of absorbent cotton, absorbent cotton is soaked, and lidstock;
S4: the thermostatted water above-mentioned brown, wide-mouth bottle being placed in 40 DEG C carries out the water-bath of 170 hours;
S5: take out above-mentioned brown, wide-mouth bottle, and absorbent cotton is laid in the bottle,suction of two-layer Medium speed filter paper;
S6: rinse above-mentioned absorbent cotton with deionized water, until washing fluid is neutral;
S7: dry at above-mentioned absorbent cotton is placed in 45 DEG C.
Above-mentioned methylthymol blue chelating resin solid detection agent is synthesized according to weight ratio 1:1 by strong basic anion-exchange resin and methylthymol blue; Or synthesize according to weight ratio 1:1.5; Or according to weight ratio 1:2 synthesis, strong basic anion-exchange resin and methylthymol blue highly effective chelating can be made like this.
Above-mentioned methylthymol blue chelating resin solid detection agent is made in accordance with the following steps:
Embodiment seven:
A1: mixed with double distilled water by above-mentioned strong basic anion-exchange resin, stirs 6 minutes with the speed of 75 revolutions per seconds in normal temperature water-bath;
A2: above-mentioned methylthymol blue adds, stirs 25 minutes with the speed of 75 revolutions per seconds in normal temperature water-bath;
A3: filter, leaches the solid portion of chelating;
A4: rinse 9 seconds with double distilled water.
Embodiment eight:
A1: mixed with double distilled water by above-mentioned strong basic anion-exchange resin, stirs 5.5 minutes with the speed of 77 revolutions per seconds in normal temperature water-bath;
A2: above-mentioned methylthymol blue adds, stirs 22.5 minutes with the speed of 77 revolutions per seconds in normal temperature water-bath;
A3: filter, leaches the solid portion of chelating;
A4: rinse 12 seconds with double distilled water.
Embodiment nine:
A1: mixed with double distilled water by above-mentioned strong basic anion-exchange resin, stirs 5 minutes with the speed of 80 revolutions per seconds in normal temperature water-bath;
A2: above-mentioned methylthymol blue adds, stirs 20 minutes with the speed of 80 revolutions per seconds in normal temperature water-bath;
A3: filter, leaches the solid portion of chelating;
A4: rinse 15 seconds with double distilled water.
In above-mentioned steps (3), carrying out in each hyperacoustic interval, 0.5-1 time/second, the rocking of 0.7 time/second or 1 time/second are being carried out to above-mentioned mixed solution.Because ultrasound wave can not continuous firing for a long time, so operation can effectively prevent leaded particulate from precipitating in ultrasound wave time-out process like this, affect hyperacoustic pulverizing and dispersion effect.
In above-mentioned steps (5), the length of getting above-mentioned methylthymol blue chelating resin solid detection agent is 100mm, 105mm or 110mm, weight is 150-165mg, put into glass tube, top and bottom absorbent cotton shutoff is located and is limited the length of methylthymol blue chelating resin solid detection agent; Get above-mentioned lead ion solution 2.5ml, 2.7ml or 3ml.
In order to the drafting of specific implementation typical curve, in above-mentioned steps (6), first with the standard lead ion solution organizing different known standard plumbum ion concentration more with organize methylthymol blue chelating resin solid detection agent more and carry out standard one by one and instill and test, draw many groups standard color change bar length value, and with standard plumbum ion concentration for horizontal ordinate, standard color change bar length value is that ordinate draws level and smooth typical curve.
In order to realize the detection of accurate objective, sample respectively with 5-10 above-mentioned sampling apparatus, then prepare above-mentioned lead ion solution one by one and carry out instillation one by one with methylthymol blue chelating resin solid detection agent and test, and then obtain 5-10 group color change bar length, then contrast one by one with typical curve and draw 5-10 group lead content, after exceptional value or two ends extreme value can being rejected, then the lead content be in surveyed operation field certain volume air of averaging.
The method of simple detection operating environment Lead in Air content of the present utility model, the concrete form of tapered slope also can carry out adjusting and designing according to actual requirement; First sealing ring and the second sealing ring are preferably elastomeric material, and its concrete form and material etc. all can carry out adjusting and designing according to actual requirement; The concrete form, setting position etc. of the first internal thread, the second internal thread, the 3rd internal thread, the first external thread, the second external thread, the first sealing station terrace, the second sealing station terrace, the 3rd sealing station terrace, the first thin diameter section, the first wide section, the second thin diameter section, the second wide section and the first end cap, the second end cap, copper mesh layers, draft tube, body, absorbent cotton silk screen, Sulfhydryl Cotton absorber, air pump and gas meter can carry out adjusting and designing according to actual requirement.
Product form of the present utility model is not limited to this case diagram and embodiment, and anyone carries out suitable change or the modification of similar thinking to it, all should be considered as not departing from patent category of the present utility model.
Claims (2)
1. a sampling apparatus, is characterized in that: the gas meter comprising sampling apparatus main body, be connected to the air pump of the outlet side of sampling apparatus main body and be located in the draft tube of air pump;
The Sulfhydryl Cotton absorber that described sampling apparatus main body comprises body, absorbent cotton silk screen from outside to inside successively and is installed in absorbent cotton silk screen, the outlet side block of described body has copper mesh layers;
The inlet end of described body is equipped with the first end cap, and outlet side is equipped with the second end cap; The side face of the inlet end of described body is formed with the first external thread, and described first end cap is formed with the first internal thread matched with described first external thread; The side face of the outlet side of described body is formed with the second external thread, and described second end cap is formed with the second internal thread matched with described second external thread;
The inlet end side face of described body is provided with the first sealing ring be between described first external thread and the second external thread, the medial surface of described first end cap is formed with the first thin diameter section near the lid end and the first wide section near lid mouth, be formed with the first sealing station terrace supported mutually with described first sealing ring between described first thin diameter section and the first wide section, described first sealing station terrace is to lid tapered circular cone inclined-plane, direction, the end by lid mouth; Described first female thread is formed in described first thin diameter section;
The outlet side side face of described body is provided with the second sealing ring be between described second external thread and the first external thread, the medial surface of described second end cap is formed with the second thin diameter section near the lid end and the second wide section near lid mouth, be formed with the second sealing station terrace supported mutually with described second sealing ring between described second thin diameter section and the second wide section, described second sealing station terrace is to lid tapered circular cone inclined-plane, direction, the end by lid mouth; Described second female thread is formed in described second thin diameter section;
The air intake opening of the draft tube of described air pump is formed with the 3rd internal thread matched with described second external thread, the medial surface of described draft tube is formed with the 3rd thin diameter section away from the second sealing ring and the 3rd wide section near the second sealing ring, be formed with the 3rd sealing station terrace supported mutually with described second sealing ring between described 3rd thin diameter section and the 3rd wide section, described 3rd sealing station terrace is by the inside tapered circular cone inclined-plane of air intake opening; Described 3rd female thread is formed in described 3rd thin diameter section.
2. a kind of sampling apparatus according to claim 1, is characterized in that: the xsect of above-mentioned tapered slope is indent camber line.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865345A (en) * | 2015-05-29 | 2015-08-26 | 福建拓普检测技术有限公司 | Method for simply detecting lead content in working environment and sampling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865345A (en) * | 2015-05-29 | 2015-08-26 | 福建拓普检测技术有限公司 | Method for simply detecting lead content in working environment and sampling device |
| CN105181400A (en) * | 2015-05-29 | 2015-12-23 | 福建拓普检测技术有限公司 | Sampling device |
| CN105181400B (en) * | 2015-05-29 | 2018-05-11 | 福建拓普检测技术有限公司 | A kind of sampling apparatus |
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Address after: 350000, Fujian, Fuzhou province Cangshan new town built new North Road, No. 2, building F, District, west side of the -2 Patentee after: Fujian Tuo Pu detection technique company limited Address before: 350000, Fujian, Quanzhou province Cangshan new town built new North Road, No. 2, building F, District, west side of the -2 Patentee before: Fujian Tuo Pu detection technique company limited |
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