CN212228519U - Negative pressure VOCs sample thief of built-in type of air pocket - Google Patents
Negative pressure VOCs sample thief of built-in type of air pocket Download PDFInfo
- Publication number
- CN212228519U CN212228519U CN202020632501.2U CN202020632501U CN212228519U CN 212228519 U CN212228519 U CN 212228519U CN 202020632501 U CN202020632501 U CN 202020632501U CN 212228519 U CN212228519 U CN 212228519U
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- CN
- China
- Prior art keywords
- sampling
- air
- plug
- communicated
- air bag
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- Expired - Fee Related
Links
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 16
- 238000005070 sampling Methods 0.000 claims abstract description 80
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract 1
- 239000011491 glass wool Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a negative pressure VOCs sampler with a built-in air bag, which comprises a sampling component, a suction pump, a vacuum box, a sampling air bag and a distributor; an air inlet channel is arranged in the distributor, one end of the sampling assembly extends into the exhaust pipeline, the other end of the sampling assembly is communicated with the air inlet channel, the sampling air bag is placed in the vacuum box, the sampling air bag and the vacuum box are respectively communicated with the air inlet channel, and the suction pump is communicated with the air inlet channel; the sampling assembly, the suction pump and the sampling air bag are communicated or closed in pairs at will through the air inlet channel, and the vacuum box is communicated or closed with suction through the air inlet channel. A negative pressure VOCs sample thief of built-in type of air pocket, avoided the frequent plug subassembly in sampling process.
Description
Technical Field
The utility model relates to a gaseous sampling device especially relates to a negative pressure VOCs sample thief of built-in type of air pocket.
Background
VOCs are volatile organic contaminants that need to be sampled for ease of detection or investigation. The existing air bag sampler consists of a sampling pipe, a suction pump, a vacuum box and a sampling bag, and the suction pump is required to be communicated or closed with the sampling pipe, the vacuum box and the sampling bag in sequence when sampling is carried out, so that the sampling pipe, the vacuum box and the like are required to be frequently plugged and pulled out, and great inconvenience is brought.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a negative pressure VOCs sample thief of built-in type of air pocket to avoid often plug to connect, simplify the sampling operation.
The technical scheme is as follows: in order to achieve the purpose, the utility model discloses a negative pressure VOCs sampler of built-in type of air pocket, including sampling subassembly, suction pump, vacuum chamber, sampling air pocket and distributor; an air inlet channel is arranged in the distributor, one end of the sampling assembly extends into the exhaust pipeline, the other end of the sampling assembly is communicated with the air inlet channel, the sampling air bag is placed in the vacuum box, the sampling air bag and the vacuum box are respectively communicated with the air inlet channel, and the suction pump is communicated with the air inlet channel; the sampling assembly, the suction pump and the sampling air bag are communicated or closed in pairs at will through the air inlet channel, and the vacuum box is communicated or closed with suction through the air inlet channel.
Further, the intake passage includes a first air passage; one end of the first air passage is communicated with the sampling assembly, the other end of the first air passage is communicated with the suction pump, and the first air passage is connected with a first plug and a second plug in a sliding mode; the first plug and the second plug are matched to control the conduction or the closing of the sampling assembly and the suction pump.
Furthermore, the air inlet passage further comprises a second air passage, one end of the second air passage is communicated with the first air passage, the other end of the second air passage is communicated with the sampling air bag, the communication point of the second air passage is arranged between the first plug and the second plug, and a third plug is connected to the second air passage in a sliding manner; the first plug and the third plug are matched to control the conduction or the closing of the sampling assembly and the sampling air bag.
Furthermore, the air inlet passage further comprises a third air passage, one end of the third air passage is communicated with the first air passage, the other end of the third air passage is communicated with the vacuum box, the communication point of the third air passage is arranged between the first blockage and the second blockage, and the third air passage is connected with a fourth blockage in a sliding manner; the second plug and the fourth plug are matched for conducting or closing between the vacuum box and the suction pump.
Further, the sampling component comprises a glass wool filter head, a sampling pipe and a heating pipe, the sampling pipe is sleeved with the heating pipe, and two ends of the sampling pipe extend out of the heating pipe to be connected with the glass wool filter head and the distributor respectively.
Furthermore, the sampling air bag and the vacuum box are respectively connected with a quick-change connector, and the quick-change connector is of a self-sealing type.
Has the advantages that: the utility model discloses a negative pressure VOCs sample thief of built-in type of air pocket has installed the distributor additional on current sampling device's basis, is provided with inlet channel in the distributor for each part intercommunication or the closure that makes sampling device has avoided frequent plug, has simplified sampling operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural diagram of a distributor according to the present invention;
fig. 3 is a structural sectional view of the dispenser according to the present invention.
Detailed Description
The present invention will be further described with reference to fig. 1 to 3.
A negative pressure VOCs sampler of a built-in air bag type comprises a sampling assembly 1, a suction pump 2, a vacuum box 3, a sampling air bag 4 and a distributor 5.
Specifically, an intake passage is provided in the distributor 5. The intake passage includes a first air passage 7, a second air passage 10, and a third air passage 12. One end of the first air passage 7 is communicated with the sampling assembly 1, the other end of the first air passage is communicated with the suction pump 2, the first air passage 7 is connected with a first plug 8 and a second plug 9 in a sliding mode, and the first plug 8 and the second plug 9 are matched to control the connection or the closure of the sampling assembly 1 and the suction pump 2. One end of the second air passage 10 is communicated with the first air passage 7, the other end of the second air passage 10 is communicated with the sampling air bag 4, the communication point of the second air passage 10 is arranged between the first plug 8 and the second plug 9, and the second air passage 10 is connected with a third plug 11 in a sliding way; the first plug 8 and the third plug 11 are matched to control the conduction or the closing of the sampling assembly 1 and the sampling gas bag 4. One end of the third air passage 12 is communicated with the first air passage 7, the other end of the third air passage 12 is communicated with the vacuum box 3, the communication point of the third air passage 12 is arranged between the first plug 8 and the second plug 9, and the third air passage 12 is connected with a fourth plug 13 in a sliding manner; the second plug 9 and the fourth plug 13 cooperate for the connection or closing between the vacuum box 3 and the suction pump 2.
The first plug 8, the second plug 9, the third plug 11 and the fourth plug 13 are provided with air guide holes 17, the first air passage, the second air passage and the third air passage are provided with sealing rings 18, and when the air guide holes 17 on the first plug 8, the second plug 9, the third plug 11 and the fourth plug 13 move to a position between the two sealing rings, the corresponding first air passage or the corresponding second air passage or the corresponding third air passage are communicated; when the air vents 17 on the first plug 8, the second plug 9, the third plug 11 and the fourth plug 13 move to the same side of the sealing ring, the corresponding first air passage or the second air passage or the third air passage is closed. The bottom that first jam 8, second jam 9, third jam 11, fourth jam 13 pass through threaded connection with the distributor, the bottom that first jam 8, second jam 9, third jam 11, fourth jam 13 is provided with spacing dish 19 to avoid separating with the distributor. The first channel is communicated, and the suction pump is communicated with the sampling pipe and is used for sucking away the rest gas in the sampling pipe.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a negative pressure VOCs sample thief of built-in type of air pocket which characterized in that: comprises a sampling component (1), a suction pump (2), a vacuum box (3), a sampling air bag (4) and a distributor (5); an air inlet channel is arranged in the distributor (5), one end of the sampling assembly (1) extends into the exhaust pipeline (6), the other end of the sampling assembly is communicated with the air inlet channel, the sampling air bag (4) is placed in the vacuum box (3), the sampling air bag (4) and the vacuum box (3) are respectively communicated with the air inlet channel, and the suction pump (2) is communicated with the air inlet channel; the sampling assembly (1), the suction pump (2) and the sampling air bag (4) are communicated or closed in pairs at will through air inlet channels, and the vacuum box (3) is communicated or closed with suction through the air inlet channels.
2. The sampler of claim 1 for negative pressure VOCs with built-in air bag, wherein: the intake passage includes a first air passage (7); one end of the first air passage (7) is communicated with the sampling assembly (1), the other end of the first air passage is communicated with the suction pump (2), and the first air passage (7) is connected with a first plug (8) and a second plug (9) in a sliding manner; the first plug (8) and the second plug (9) are matched to control the conduction or the closing of the sampling assembly (1) and the suction pump (2).
3. The sampler of claim 2 for negative pressure VOCs with built-in air bag, wherein: the air inlet channel further comprises a second air channel (10), one end of the second air channel (10) is communicated with the first air channel (7), the other end of the second air channel (10) is communicated with the sampling air bag (4), the communication point of the second air channel is arranged between the first plug (8) and the second plug (9), and the second air channel (10) is connected with a third plug (11) in a sliding mode; the first plug (8) and the third plug (11) are matched to control the conduction or the closing of the sampling assembly (1) and the sampling air bag (4).
4. The sampler of claim 2 for negative pressure VOCs with built-in air bag, wherein: the air inlet channel further comprises a third air channel (12), one end of the third air channel (12) is communicated with the first air channel (7), the other end of the third air channel (12) is communicated with the vacuum box (3), the communication point of the third air channel is arranged between the first plug (8) and the second plug (9), and the third air channel (12) is connected with a fourth plug (13) in a sliding mode; the second plug (9) and the fourth plug (13) are matched for conducting or closing between the vacuum box (3) and the suction pump (2).
5. The sampler of claim 1 for negative pressure VOCs with built-in air bag, wherein: sampling subassembly (1) includes cotton filter head of glass (14), sampling pipe (15) and heating pipe (16), sampling pipe (15) cover is established and is connected in heating pipe (16), and its both ends stretch out to be connected with cotton filter head of glass (14) and distributor (5) respectively outside heating pipe (16).
6. The sampler of claim 1 for negative pressure VOCs with built-in air bag, wherein: the sampling air bag (4) and the vacuum box (3) are respectively connected with a quick-change connector, and the quick-change connector is of a self-sealing type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020632501.2U CN212228519U (en) | 2020-04-24 | 2020-04-24 | Negative pressure VOCs sample thief of built-in type of air pocket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020632501.2U CN212228519U (en) | 2020-04-24 | 2020-04-24 | Negative pressure VOCs sample thief of built-in type of air pocket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212228519U true CN212228519U (en) | 2020-12-25 |
Family
ID=73908143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020632501.2U Expired - Fee Related CN212228519U (en) | 2020-04-24 | 2020-04-24 | Negative pressure VOCs sample thief of built-in type of air pocket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212228519U (en) |
-
2020
- 2020-04-24 CN CN202020632501.2U patent/CN212228519U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201225 |