CN220794756U - Dioxin sampling head - Google Patents
Dioxin sampling head Download PDFInfo
- Publication number
- CN220794756U CN220794756U CN202322293153.7U CN202322293153U CN220794756U CN 220794756 U CN220794756 U CN 220794756U CN 202322293153 U CN202322293153 U CN 202322293153U CN 220794756 U CN220794756 U CN 220794756U
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- China
- Prior art keywords
- filter membrane
- sampling device
- adsorption tank
- sealing
- adsorbent
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- 238000005070 sampling Methods 0.000 title claims abstract description 106
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 117
- 238000007789 sealing Methods 0.000 claims abstract description 73
- 239000003463 adsorbent Substances 0.000 claims abstract description 31
- 239000013013 elastic material Substances 0.000 claims abstract description 3
- 238000001179 sorption measurement Methods 0.000 claims description 45
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 239000000428 dust Substances 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 27
- 210000004907 gland Anatomy 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 206010063003 Endocrine toxicity Diseases 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 231100000146 endocrine toxicity Toxicity 0.000 description 1
- 231100000110 immunotoxic Toxicity 0.000 description 1
- 230000002625 immunotoxic effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000219 mutagenic Toxicity 0.000 description 1
- 230000003505 mutagenic effect Effects 0.000 description 1
- 231100000590 oncogenic Toxicity 0.000 description 1
- 230000002246 oncogenic effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model belongs to the field of environmental protection monitoring, and discloses a dioxin sampling head, which comprises a filter membrane sampling device and an adsorbent sampling device, wherein a first sealing sleeve is arranged between the filter membrane sampling device and the adsorbent sampling device; the first sealing sleeve is of a cylindrical structure and is made of elastic materials, and annular sealing lines are arranged on the inner surface of the first sealing sleeve; one end of the filter membrane sampling device is sleeved on the outer surface of the lower end of the air outlet of the filter membrane sampling device, and the other end of the filter membrane sampling device is sleeved on the outer surface of the upper end of the air inlet of the adsorbent sampling device. Can sample in succession with the sampling flow more than 800L/min, easy dismounting is convenient for the installation and the takeout of filter membrane, and can guarantee the leakproofness.
Description
Technical Field
The utility model relates to a dioxin sampling head, which is mainly used for collecting dioxin samples in ambient air and belongs to the field of environmental protection monitoring.
Background
Dioxin generally refers to a group of polychlorinated substituted planar aromatic compounds with similar structure and physicochemical properties, which are easily soluble in fat, are easily accumulated in organisms, and have strong biotoxicity, and the toxicity is 130 times of cyanide and 900 times of arsenic. Dioxins have irreversible "teratogenic, oncogenic, mutagenic" toxicity, as well as reproductive, immunotoxic and endocrine toxicity, and are considered to be "one of the most dangerous chemicals in the world". In addition, dioxin is difficult to degrade naturally once it permeates into the environment, so it is called "century poison". Therefore, the monitoring of dioxin in the environment must be enhanced, and a data basis is provided for emission control and technical management of dioxin.
The collection of dioxin sample in the ambient air needs to use sample thief host computer and dioxin sampling head, and current general dioxin sampling head includes filter membrane sampling part and adsorbent sampling part, and the connection between the two is threaded connection, when installing or taking off the filter membrane, need grasp one end, the rotation other end, and the operation is inconvenient, and the installation is wasted time to the easy gas leakage phenomenon that produces.
In the prior art, a quartz filter membrane with the diameter of 102mm is generally adopted as a filter membrane of the dioxin sampling head, and when the sampling flow rate is 600L/min, the resistance is about 26kPa, and the state reaches the load extreme value of the existing sampler, so that the requirement of continuous 24-hour sampling at the sampling flow rate of 800L/min cannot be met.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides the dioxin sampling head which can continuously sample at a sampling flow of more than 800L/min, is convenient to disassemble and assemble, is convenient for installing and taking out a filter membrane, and can ensure the tightness.
The technical scheme provided by the utility model is as follows:
the dioxin sampling head comprises a filter membrane sampling device and an adsorbent sampling device, wherein a first sealing sleeve is arranged between the filter membrane sampling device and the adsorbent sampling device;
the first sealing sleeve is of a cylindrical structure and is made of elastic materials, and annular sealing lines are arranged on the inner surface of the first sealing sleeve; one end of the filter membrane sampling device is sleeved on the outer surface of the lower end of the air outlet of the filter membrane sampling device, and the other end of the filter membrane sampling device is sleeved on the outer surface of the upper end of the air inlet of the adsorbent sampling device. The elastic annular sealing lines are respectively in close contact with the outer surface of the air outlet of the filter membrane sampling device and the outer surface of the air inlet of the adsorption tank to realize sealing; thereby realizing the plug-in sealing connection of the filter membrane sampling device and the adsorbent sampling device.
The annular sealing lines are arranged to be more than 2, and the cross sections of the annular sealing lines are in a truncated cone shape or a triangle shape so as to reduce friction resistance during assembly.
The first sealing sleeve is made of silicon rubber.
The filter membrane sampling device comprises a dust cover, wherein a dust cover rotating handle is arranged on the dust cover, so that the filter membrane sampling device is convenient to hold, and the filter membrane is convenient to install and take out.
The filter membrane sampling device is cylindrical and consists of a dust cover, a compression ring, a filter membrane support, a filter membrane bracket and an air outlet of the filter membrane sampling device; the dust cover and the compression ring are integrated through N supporting sleeves, and N is more than or equal to 3; a first sealing ring is arranged between the compression ring and the filter membrane compression ring to realize the sealing between the contact surfaces; the filter membrane support and the filter membrane are arranged in the filter membrane bracket, the filter membrane compression ring is pressed in from the upper part of the filter membrane bracket and is pressed on the outer edge of the upper surface of the filter membrane, and a second sealing ring is arranged between the filter membrane bracket and the filter membrane compression ring to realize the sealing between contact surfaces; a third sealing ring is arranged between the filter membrane bracket and the air outlet of the filter membrane sampling device, so that the contact surfaces are sealed; the filter membrane compression ring, the filter membrane support and the filter membrane bracket are fixedly arranged together with the air outlet of the filter membrane sampling device through threads, so that the whole filter membrane sampling device is combined into a whole.
Furthermore, the filter membrane diameter of the filter membrane sampling device is larger than 130mm, so that the sampling resistance is reduced.
The adsorbent sampling device consists of an adsorption tank, an upper shield body of the adsorption tank, a lower shield body of the adsorption tank, an absorption cup and an adsorbent; the adsorption tank comprises an adsorption tank air outlet and an adsorption tank air inlet; the air inlet of the adsorption tank is fixedly connected with the upper shield body of the adsorption tank through threads; the lower shield body of the adsorption tank is fixedly connected with the air outlet of the adsorption tank through threads; the upper protective cover body of the adsorption tank is fixedly connected with the lower protective cover body of the adsorption tank through a hasp; the absorption cup is placed in the adsorption tank, and the upper port and the lower port of the absorption cup are respectively sealed by sealing gaskets; the adsorbent is filled in the absorption cup.
The shape, the material and the structure of the second sealing sleeve are the same as those of the first sealing sleeve, one end of the second sealing sleeve is sleeved on an air outlet of an adsorption tank of the adsorbent sampling device, and the other end of the second sealing sleeve is sleeved on an air inlet of a sampler host, so that the adsorbent sampling device is in plug-in sealing connection with the sampler host.
The utility model has the beneficial effects that: the resistance of the air path is reduced by selecting a large-area filter membrane, so that sample collection can be continuously carried out at a flow rate of more than 800L/min under a low resistance state; the filter membrane sampling device is provided with a dust cover rotating handle, so that the filter membrane sampling device is convenient to hold and convenient to install and take out; a first sealing sleeve is arranged between the filter membrane sampling device and the adsorbent sampling device, a second sealing sleeve is arranged between the adsorbent sampling device and the sampler host, and the whole sampling head is in plug-in sealing connection, so that the filter membrane sampling device is convenient to assemble and disassemble and is simple to operate.
Drawings
The utility model will be described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of a dioxin sampling head provided by the utility model.
Fig. 2 is a schematic structural diagram of a filter membrane sampling apparatus according to the present utility model.
Fig. 3 is a schematic structural view of the adsorbent sampling apparatus of the present utility model.
Figure 4 is a cross-sectional view of a first gland according to the present utility model.
Fig. 5 is a partial enlarged view of the point i in fig. 1.
In the figure: 1. a filter membrane sampling device; 2. an adsorbent sampling device; 3. a first gland; 4. a second gland; 101, rotating a handle of the dust cover; 102. a dust cover; 103. a clamp ring; 104. a filter membrane compression ring; 105. a filter membrane; 106. a filter membrane support; 107. a filter membrane bracket; 108. an air outlet of the filter membrane sampling device; 109. a support sleeve; 110. a first seal ring; 111. a second seal ring; 112. a third seal ring; 201 canister inlet; 202. an upper shield body of the adsorption tank; 203. a lower shield body of the adsorption tank; 204. an absorption cup; 205. an adsorbent; 206 an adsorption tank gas outlet; 207. a hasp; 208. a sealing gasket; 301. annular sealing line
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1, a dioxin sampling head comprises four parts of a filter membrane sampling device 1, a first sealing sleeve 3, an adsorbent sampling device 2 and a second sealing sleeve 4.
As shown in fig. 2, the filter membrane sampling device 1 is composed of a dust cover 102, a compression ring 103, a filter membrane compression ring 104, a filter membrane 105, a filter membrane support 106, a filter membrane bracket 107 and a filter membrane sampling device air outlet 108; the dust cover 102 and the compression ring 103 are combined into a whole through 3 support sleeves 109; a first sealing ring 110 is arranged between the compression ring 103 and the filter membrane compression ring 104 to realize the sealing between contact surfaces; the filter membrane support 106 and the filter membrane 105 are arranged in the filter membrane bracket 107, the filter membrane compression ring 104 is pressed in from the upper part of the filter membrane bracket 107 and is pressed on the outer edge of the upper surface of the filter membrane 105, and a second sealing ring 111 is arranged between the filter membrane bracket 107 and the filter membrane compression ring 104 to realize the sealing between contact surfaces; a third sealing ring 112 is arranged between the filter membrane bracket 107 and the air outlet 108 of the filter membrane sampling device, so that the sealing between the contact surfaces is realized; the compression ring 103 fixedly installs the filter membrane compression ring 104, the filter membrane 105, the filter membrane support 106, the filter membrane bracket 107 and the filter membrane sampling device air outlet 108 together through threads, thereby combining the whole filter membrane sampling device 1 into a whole. The dust cover rotating handle 101 is arranged on the dust cover 102, so that the dust cover rotating handle is convenient to hold, and the filter membrane 105 is convenient to install and take out. The diameter of the filter membrane 105 is 180mm, so that the sampling resistance is greatly reduced.
As shown in fig. 3, the absorbent sampling device 2 is composed of an adsorption tank, an upper shield body 202 of the adsorption tank, a lower shield body 203 of the adsorption tank, an absorption cup 204 and an absorbent 205; the canister includes a canister outlet 206 and a canister inlet 201; the adsorption tank air inlet 201 is fixedly connected with the adsorption tank upper shield body 202 through threads; the lower shield body 203 of the adsorption tank is fixedly connected with the air outlet 206 of the adsorption tank through threads; the upper shield body 202 of the adsorption tank is fixedly connected with the lower shield body 203 of the adsorption tank through a hasp 207; the absorption cup 204 is placed in the adsorption tank, and the upper port and the lower port of the absorption cup 204 are respectively sealed by a sealing gasket 208; the adsorbent 205 is filled in the absorption cup 204.
As shown in fig. 4, the first sealing sleeve 3 is made of silicone rubber, 8 annular sealing lines 301 are arranged on the inner surface of the first sealing sleeve, and the cross section of each annular sealing line 301 is triangular. One end of the first sealing sleeve 3 is sleeved on the outer surface of the lower end of the air outlet 108 of the filter membrane sampling device, the other end of the first sealing sleeve is sleeved on the outer surface of the upper end of the air inlet 201 of the adsorption tank, and the sealing is realized by means of tightly contacting 8 elastic annular sealing lines 301 with the outer surface of the air outlet 108 of the filter membrane sampling device and the outer surface of the air inlet 201 of the adsorption tank respectively; thereby realizing the plug-in sealing connection of the filter membrane sampling device 1 and the adsorbent sampling device 2.
The shape, material and structure of the second sealing sleeve 4 are the same as those of the first sealing sleeve 3, one end of the second sealing sleeve is sleeved on the air outlet 206 of the adsorption tank of the adsorbent sampling device 2, and the other end of the second sealing sleeve is sleeved on the air inlet of the sampler host, so that the pluggable sealing connection between the adsorbent sampling device and the sampler host is realized.
In summary, the utility model adopts the scheme of increasing the area of the filter membrane, reduces the resistance of the air path under the same sampling flow state, and enables the sample collection to be continuously carried out at the flow rate of more than 800L/min under the low resistance state; the filter membrane sampling device is provided with a dust cover rotating handle, so that the filter membrane sampling device is convenient to hold and convenient to install and take out; the filter membrane sampling device and the adsorbent sampling device are connected in a plug-in sealing manner through the first sealing sleeve, so that the filter membrane sampling device is convenient to disassemble and assemble and simple to operate.
The above description is only one embodiment of the present utility model and is not intended to limit the present utility model, but any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the scope of the present utility model.
Claims (8)
1. The utility model provides a dioxin sampling head, includes filter membrane sampling device, adsorbent sampling device, its characterized in that: a first sealing sleeve is arranged between the filter membrane sampling device and the adsorbent sampling device;
the first sealing sleeve is of a cylindrical structure and is made of elastic materials, and annular sealing lines are arranged on the inner surface of the first sealing sleeve; one end of the filter membrane sampling device is sleeved on the outer surface of the lower end of the air outlet of the filter membrane sampling device, and the other end of the filter membrane sampling device is sleeved on the outer surface of the upper end of the air inlet of the adsorbent sampling device.
2. The dioxin sampling head of claim 1, wherein: the annular sealing lines are arranged to be more than 2, and the cross section of the annular sealing lines is in a truncated cone shape or a triangle shape.
3. The dioxin sampling head of claim 2, wherein: the first sealing sleeve is made of silicon rubber.
4. The dioxin sampling head of claim 2, wherein: the filter membrane sampling device comprises a dust cover, and a dust cover rotating handle is arranged on the dust cover.
5. The dioxin sampling head of claim 4, wherein: the filter membrane sampling device is cylindrical and consists of a dust cover, a compression ring, a filter membrane support, a filter membrane bracket and an air outlet of the filter membrane sampling device; the dust cover and the compression ring are integrated through N supporting sleeves, and N is more than or equal to 3; a first sealing ring is arranged between the compression ring and the filter membrane compression ring to realize the sealing between the contact surfaces; the filter membrane support and the filter membrane are arranged in the filter membrane bracket, the filter membrane compression ring is pressed in from the upper part of the filter membrane bracket and is pressed on the outer edge of the upper surface of the filter membrane, and a second sealing ring is arranged between the filter membrane bracket and the filter membrane compression ring to realize the sealing between contact surfaces; a third sealing ring is arranged between the filter membrane bracket and the air outlet of the filter membrane sampling device, so that the contact surfaces are sealed; the filter membrane compression ring, the filter membrane support and the filter membrane bracket are fixedly arranged together with the air outlet of the filter membrane sampling device through threads.
6. The dioxin sampling head of claim 4, wherein: the filter membrane sampling device comprises a filter membrane, and the diameter of the filter membrane is larger than 130mm.
7. The dioxin sampling head of claim 2, wherein: the adsorbent sampling device consists of an adsorption tank, an upper shield body of the adsorption tank, a lower shield body of the adsorption tank, an absorption cup and an adsorbent; the adsorption tank comprises an adsorption tank air outlet and an adsorption tank air inlet; the air inlet of the adsorption tank is fixedly connected with the upper shield body of the adsorption tank through threads; the lower shield body of the adsorption tank is fixedly connected with the air outlet of the adsorption tank through threads; the upper protective cover body of the adsorption tank is fixedly connected with the lower protective cover body of the adsorption tank through a hasp; the absorption cup is placed in the adsorption tank, and the upper port and the lower port of the absorption cup are respectively sealed by sealing gaskets; the adsorbent is filled in the absorption cup.
8. The dioxin sampling head of claim 2, wherein: it is also provided with a second sealing sleeve; the shape, the material and the structure of the second sealing sleeve are the same as those of the first sealing sleeve, one end of the second sealing sleeve is sleeved on the air outlet of the adsorption tank of the adsorbent sampling device, and the other end of the second sealing sleeve is sleeved on the air inlet of the sampler host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322293153.7U CN220794756U (en) | 2023-08-25 | 2023-08-25 | Dioxin sampling head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322293153.7U CN220794756U (en) | 2023-08-25 | 2023-08-25 | Dioxin sampling head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220794756U true CN220794756U (en) | 2024-04-16 |
Family
ID=90655668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322293153.7U Active CN220794756U (en) | 2023-08-25 | 2023-08-25 | Dioxin sampling head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220794756U (en) |
-
2023
- 2023-08-25 CN CN202322293153.7U patent/CN220794756U/en active Active
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