CN211904803U - Series connection air sampling pipe - Google Patents
Series connection air sampling pipe Download PDFInfo
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- CN211904803U CN211904803U CN201921900646.XU CN201921900646U CN211904803U CN 211904803 U CN211904803 U CN 211904803U CN 201921900646 U CN201921900646 U CN 201921900646U CN 211904803 U CN211904803 U CN 211904803U
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Abstract
The utility model relates to a series connection air sampling pipe, including the solid adsorbent that can gather vapour attitude noxious material, can gather the filter material of aerosol attitude noxious material, the sampling box of placing the filter material, pack have the sampling pipe of solid adsorbent, can dismantle the first sealed cap of being connected with the sampling box, and can dismantle the sealed cap of second of being connected with the sampling pipe, the one end of sampling box is connected with first sealed cap, the other end communicates with the one end of sampling pipe and can dismantle and be connected, and the other end of sampling pipe is connected with the sealed cap of second. Sampling box and sampling tube directly dock and adopt and can dismantle the connected mode, compare with traditional series connection mode, this air sampling tube can be arranged in gathering for a long time with the gaseous and colloidal coexistent noxious material of gas phase and solution in the air, be convenient for install and dismantle moreover, the filter material of being convenient for and the separately detection of solid sorbent improve work efficiency and detection accuracy, sampling box and sampling tube can also recycle, further reduce the detection cost.
Description
Technical Field
The utility model relates to an environmental monitoring equipment technical field, in particular to series connection air sampling pipe.
Background
Some toxic substances in the air coexist in a vapor state and a sol state, in the actual sampling process, different air sampling pipes are sometimes required to be simultaneously applied to respectively collect the vapor-state toxic substances and the sol-state toxic substances, multiple sampling and analysis work is required, the sampling and detection cost is high, the efficiency is low, and the development of daily sampling and detection work is greatly limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a series connection air sampling pipe can improve detection efficiency with the gaseous and colloidal coexistent noxious material of vapour in the air of simultaneous acquisition, reduces and detects the cost.
For realizing the purpose of the utility model, the technical proposal adopted is that:
the utility model provides a series connection air sampling pipe, includes the solid adsorbent that can gather vapour attitude noxious material, can gather the filter material of aerosol attitude noxious material, places the sampling box of filter material, pack the sampling pipe of solid adsorbent, can dismantle the first sealed cap of being connected with the sampling box, and can dismantle the second sealed cap of being connected with the sampling pipe, the one end of sampling box is connected with first sealed cap, the other end communicates with the one end of sampling pipe and can dismantle the connection, and the other end of sampling pipe is connected with the second sealed cap.
The air sampling tube collects the toxic substances in a gas sol state through the sampling box filled with the filter material, and simultaneously collects the toxic substances in a vapor state through the sampling tube filled with the solid adsorbent, so that the toxic substances coexisting in the vapor state and the gas sol state in the air can be collected simultaneously, the detection efficiency is improved, and the detection cost is reduced; and sampling box and sampling pipe are direct to dock and adopt and can dismantle the connected mode, compare with traditional series connection mode, this air sampling pipe can be arranged in gathering for a long time with the coexistent toxic substance of vapour attitude and aerosol form in the air, be convenient for install and dismantle moreover, be convenient for take out and separately detect of filter material and solid sorbent, improve work efficiency and detection accuracy, sampling box and sampling pipe can also recycle, further reduce the detection cost.
Further, the sampling pipe includes first appearance pipe and second appearance pipe, and it has the solid sorbent all to fill in first appearance pipe and the second appearance pipe, and the one end and the sampling box intercommunication of first appearance pipe can be dismantled and be connected, and the other end communicates with the one end of second appearance pipe and can dismantle and be connected, and the other end of second appearance pipe is connected with the sealed cap of second. When detecting, first appearance pipe and second appearance pipe are dismantled separately, compare with traditional solid sorbent sampling pipe, do not need the cutting and break off with the fingers and thumb just can take out the desorption analysis respectively with the solid sorbent in two appearance pipes simultaneously, and whole operation process is convenient, improves work efficiency, does benefit to developing of daily work, and sampling pipe accessible is refilled solid sorbent reuse, has greatly reduced material use cost.
Furthermore, a first air outlet pipe is arranged at one end, connected with the second sample pipe, of the first sample pipe, the first air outlet pipe is inserted into the second sample pipe, a first sealing ring is sealed between the outer wall of the first air outlet pipe and the inner wall of the second sample pipe, and the first air outlet pipe is sleeved with the first sealing ring. The first air outlet pipe of the first sample pipe is connected with the second sample pipe through the first sealing ring for sealing and clamping, so that the installation and the disassembly are convenient.
Further, a first compaction plate, a first breathable isolating piece, a solid adsorbent and a second breathable isolating piece are sequentially arranged in the second sample tube from one end matched with the first air outlet tube to the other end, a second compaction plate, a third breathable isolating piece, a solid adsorbent and a fourth breathable isolating piece are sequentially arranged in the first sample tube from one end matched with the sampling box to the other end, and air holes are formed in the first compaction plate and the second compaction plate. In restricting the second appearance with solid adsorbent through first ventilative separator and the ventilative separator of second, in restricting the first appearance with solid adsorbent through the ventilative separator of third and the ventilative separator of fourth, prevent that solid adsorbent from dropping to it is fixed through first compacting plate and the compaction of second compacting plate respectively, prevent the random removal of material, guarantee the stability of sampling.
Furthermore, the first breathable isolating piece, the second breathable isolating piece, the third breathable isolating piece and the fourth breathable isolating piece are all made of plastic foam or glass wool, and the first compacting plate and the second compacting plate are metal rings or elastic plastic rings.
Further, a second air outlet pipe is arranged at one end, connected with a second sealing cap, of the second sample pipe, and the second air outlet pipe is sleeved in the second sealing cap and is connected with the second sealing cap in a bayonet buckle matching mode or in a threaded connection mode. The second sample tube and the second sealing cap are connected in a bayonet buckle matching mode or in a threaded connection mode in a detachable mode, and the second sample tube and the second sealing cap are convenient to install and detach.
Furthermore, the sampling box, the first sample tube and the second sample tube are all made of plastic materials. Sampling box, first appearance pipe and second appearance pipe adopt the plastics material, not only make whole air sampling pipe light in weight, portable, it is not fragile still, make this air sampling pipe can be suitable for any sampling mode, like the long-time/short time sampling of fixed point or individual long-time/short time sampling, can realize sampling and simultaneous detection to a certain kind of noxious material (or different types of noxious material) with vapour attitude and sol-gel coexistence in the air.
Furthermore, a third air outlet pipe is arranged at one end of the sampling box, which is connected with the first sample pipe, the third air outlet pipe is inserted into the first sample pipe, a second sealing ring is sealed between the outer wall of the third air outlet pipe and the inner wall of the first sample pipe, and the third air outlet pipe is sleeved with the second sealing ring. And a third air outlet pipe of the sampling box is connected with a first sampling pipe through a second sealing ring, sealed and clamped, so that the sampling box is convenient to mount and dismount.
Further, the sampling box includes threaded connection's upper cover and lower cover, and the cooperation forms the sampling chamber between upper cover and the lower cover, and the filter material has been placed and the supporting pad that is used for supporting the filter material in the sampling chamber, and the third outlet duct communicates with the sampling chamber. The sampling box adopts the structural style of threaded connection's upper cover and lower cover, and the installation of being convenient for is dismantled, makes things convenient for the installation of filter material and takes out, improves work efficiency.
Further, the upper cover is provided with an air inlet pipeline communicated with the sampling cavity, the first sealing cap is provided with a connecting rod, and the connecting rod is sleeved in the air inlet pipeline and is connected with the air inlet pipeline in a bayonet buckle fit manner or in a threaded connection manner. The upper cover and the first sealing cap are connected in a bayonet buckle matching mode or in a threaded connection mode in a detachable mode, and the upper cover and the first sealing cap are convenient to install and detach.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model collects the toxic substance in gas sol state through the sampling box with the filtering material, and simultaneously collects the toxic substance in vapor state through the sampling pipe with the solid adsorbent, so that the toxic substance coexisting in vapor state and gas sol state in the air can be collected simultaneously, the detection efficiency is improved, and the detection cost is reduced; and sampling box and sampling pipe are direct to dock and adopt and can dismantle the connected mode, compare with traditional series connection mode, this air sampling pipe can be arranged in gathering for a long time with the coexistent toxic substance of vapour attitude and aerosol form in the air, be convenient for install and dismantle moreover, be convenient for take out and separately detect of filter material and solid sorbent, improve work efficiency and detection accuracy, sampling box and sampling pipe can also recycle, further reduce the detection cost.
Drawings
FIG. 1 is a schematic structural diagram of an air sampling tube connected in series according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first sample tube according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second sample tube according to an embodiment of the present invention.
Description of reference numerals:
10. the gas sampling device comprises a solid adsorbent, 20 parts of a first sample tube, 210 parts of a first gas outlet tube, 220 parts of a second compaction plate, 230 parts of a third gas-permeable isolating piece, 240 parts of a fourth gas-permeable isolating piece, 30 parts of a second sample tube, 310 parts of the first compaction plate, 320 parts of the first gas-permeable isolating piece, 330 parts of the second gas-permeable isolating piece, 340 parts of a second gas outlet tube, 40 parts of a first sealing cap, 410 parts of a connecting rod, 50 parts of a second sealing cap, 60 parts of a first sealing ring, 70 parts of a sampling box, 710 parts of the third gas outlet tube, 720 parts of an upper cover, 730 parts of a lower cover, 740 parts of a supporting pad, 80 parts of the third gas outlet tube, 720 parts of an upper cover, 730.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings:
as shown in figures 1 to 3, a serial connection air sampling tube comprises a solid adsorbent 10 capable of collecting vapor-state toxic substances, a filter material 80 capable of collecting aerosol-state toxic substances, a sampling box 70 with the filter material 80 placed therein, a sampling tube filled with the solid adsorbent 10, a first sealing cap 40 detachably connected with the sampling box 70, and a second sealing cap 50 detachably connected with the sampling tube, wherein one end of the sampling box 70 is connected with the first sealing cap 40, the other end of the sampling tube is communicated with one end of the sampling tube and detachably connected with the one end of the sampling tube, and the other end of the sampling tube is connected with the second sealing cap 50.
The air sampling tube collects the toxic substances in gas sol state through the sampling box 70 filled with the filter material 80, and simultaneously collects the toxic substances in vapor state through the sampling tube filled with the solid adsorbent 10, so that the toxic substances coexisting in vapor state and gas sol state in the air can be collected simultaneously, the detection efficiency is improved, and the detection cost is reduced; and sampling box 70 and sampling pipe are direct to dock and adopt the connection mode of dismantling, compare with traditional series connection mode, this air sampling pipe can be used for gathering for a long time in the air with the coexistent toxic substance of vapour attitude and sol form, be convenient for install and dismantle moreover, be convenient for take out and separately detect of filter material 80 and solid adsorbent, improve work efficiency and detection accuracy, sampling box 70 and sampling pipe can also recycle, further reduce the detection cost.
As shown in fig. 1 to 3, the sampling tube includes a first sample tube 20 and a second sample tube 30, the first sample tube 20 and the second sample tube 30 are both filled with the solid adsorbent 10, one end of the first sample tube 20 is communicated with and detachably connected to the sampling box 70, the other end of the first sample tube 20 is communicated with and detachably connected to one end of the second sample tube 30, and the other end of the second sample tube 30 is connected to a second sealing cap 50.
In this embodiment, the first sample tube 20 is provided with a first outlet tube 210 at the end connected with the second sample tube 30, the first outlet tube 210 is inserted into the second sample tube 30, and a first sealing ring 60 is sealed between the outer wall of the first outlet tube 210 and the inner wall of the second sample tube 30, the first sealing ring 60 is sleeved on the first outlet tube 210, the first outlet tube 210 of the first sample tube 20 is connected with the second sample tube 30 through the first sealing ring 60, and the first outlet tube 210 and the second sample tube 30 are tightly clamped, so that the installation and the disassembly are convenient. The first sample tube 20 and the second sample tube 30 can be detachably connected by a screw thread or the like according to actual needs.
As shown in fig. 1 to 3, a first compacting plate 310, a first gas-permeable isolating member 320, a solid adsorbent 10 and a second gas-permeable isolating member 330 are sequentially arranged in the second sample tube 30 from one end matched with the first gas outlet tube 210 to the other end, a second compacting plate 220, a third gas-permeable isolating member 230, a solid adsorbent 10 and a fourth gas-permeable isolating member 240 are sequentially arranged in the first sample tube 20 from the gas inlet end to the gas outlet end, and gas holes are formed in the first compacting plate 310 and the second compacting plate 220. The solid adsorbent 10 is limited in the second sample tube 30 by the first gas-permeable partition 320 and the second gas-permeable partition 330, the solid adsorbent 10 is limited in the first sample tube 20 by the third gas-permeable partition 230 and the fourth gas-permeable partition 240, the solid adsorbent 10 is prevented from dropping, and the solid adsorbent is compacted and fixed by the first compacting plate 310 and the second compacting plate 220 respectively, so that the material is prevented from moving randomly, and the stability of sampling is ensured.
In this embodiment, the first breathable isolation member 320, the second breathable isolation member 330, the third breathable isolation member 230 and the fourth breathable isolation member 240 are all made of glass wool, the first compression plate 310 and the second compression plate 220 are elastic plastic rings, the first breathable isolation member 320, the second breathable isolation member 330, the third breathable isolation member 230 and the fourth breathable isolation member 240 can be made of other breathable isolation materials such as plastic foam according to actual needs, and the first compression plate 310 and the second compression plate 220 can also be made of metal materials according to actual needs.
As shown in fig. 1, a second air outlet pipe 340 is disposed at one end of the second sample tube 30 connected to the second sealing cap 50, and the second air outlet pipe 340 is sleeved in the second sealing cap 50 and is in threaded connection with the second sealing cap 50. The second sample tube 30 and the second sealing cap 50 are detachably connected by a threaded connection, so that the second sample tube and the second sealing cap are convenient to install and detach. Other detachable connection modes such as bayonet buckle fit connection can also be adopted between second appearance pipe 30 and second sealing cap 50 according to actual need.
As shown in FIG. 1, sampling box 70 includes threaded connection's upper cover 720 and lower cover 730, and the cooperation forms the sampling chamber (the attached drawing does not mark) between upper cover 720 and the lower cover 730, has placed filter material 80 and has been used for supporting the supporting pad 740 of filter material 80 in the sampling chamber, and sampling box 70 adopts threaded connection's upper cover 720 and lower cover 730's structural style, and the installation of being convenient for is dismantled, makes things convenient for the installation of filter material 80 and takes out, improves work efficiency. The upper cover 720 and the lower cover 730 can be connected by other methods such as a flip cover according to actual needs.
As shown in fig. 1, the lower cap 730 is provided with a third air outlet pipe 710 connected with the first sample pipe, the third air outlet pipe 710 is inserted into the first sample pipe 20, a second sealing ring 90 is sealed between the outer wall of the third air outlet pipe 710 and the inner wall of the first sample pipe 20, and the third air outlet pipe 710 is sleeved with the second sealing ring 90. The third outlet pipe 710 of the sampling box 70 is connected with the first sample pipe 20 through the second sealing ring 90 for sealing and clamping, so that the installation and the disassembly are convenient.
After the serially connected air sampling pipes are assembled and fixed, the first air outlet pipe 210 of the first sample pipe 20 is pressed against the first compacting plate 310 in the second sample pipe 30, and the third air outlet pipe 710 of the lower cover 730 is pressed against the second compacting plate 220 in the first sample pipe 20, so that the materials in the first sample pipe 20 and the second sample pipe 30 are fixed and more stable.
As shown in fig. 1, the upper cover 720 is provided with an air inlet pipe (not shown in the drawings) communicated with the sampling cavity, the first sealing cap 40 is provided with a connecting rod 410, and the connecting rod 410 is sleeved in the air inlet pipe and is in threaded connection with the air inlet pipe. The upper cover 720 and the first sealing cap 40 are detachably connected in a threaded manner, so that the installation and the disassembly are convenient. The connecting rod 410 and the upper cover 720 can be detachably connected by a bayonet and a snap fit connection according to actual needs.
During installation, the first air-permeable partition 320 is placed at the bottom of the second sample tube 30, then the solid adsorbent 10 is placed, then the second air-permeable partition 330 is placed, and finally the first compaction plate 310 is used for compaction and fixation; then the first air outlet pipe 210 of the first sample pipe 20 is connected with the second sample pipe 30 through the first sealing ring 60 for sealing and clamping; then, a third gas-permeable partition 230 is placed at the bottom of the first sample tube 20, then the solid adsorbent 10 is placed, then a fourth gas-permeable partition 240 is placed, and finally the second compaction plate 220 is used for compacting and fixing; then the third air outlet pipe 710 of the sampling box 70 provided with the supporting pad 740 and the filter material 80 is connected with the second sealing ring 90 passing through the air inlet end of the first sample pipe for sealing and clamping; finally, the first sealing cap 40 and the second sealing cap 50 are respectively fitted over the upper cap 720 and the second sample tube 30. During sampling, the first sealing cap 40 and the second sealing cap 50 are taken down, the first sealing cap 40 and the second sealing cap 50 are sleeved after monitoring is finished, and the detection is sent back. By assembling the filter material 80 sampling box 70 provided with the filter material 80 and the sampling pipe filled with the solid adsorbent into the series air sampling pipe, toxic substances (such as chlorobenzene compounds, organic tin compounds, aromatic nitro compounds and the like) coexisting in a vapor state and a gas-liquid state in the air can be simultaneously collected for a long time, and the sampling detection cost is low and the efficiency is high; in addition, the first sample tube 20 and the second sample tube 30 filled with the solid adsorbent 10 are detachably connected, so that the operation is very easy in the actual sample pretreatment analysis process, operators do not need to cut the solid adsorbent tubes, the working efficiency is greatly improved, the sampling box 70 and the sampling tubes can be recycled, and the material use cost is greatly reduced.
In this embodiment, the first sample tube 20, the second sample tube 30 and the sampling box 70 are made of plastic materials, so that the whole air sampling tube is light in weight, convenient to carry and not easy to damage, and can be applied to any sampling mode, such as fixed-point long-time/short-time sampling or individual long-time/short-time sampling, and can realize simultaneous sampling and simultaneous detection of a certain type of toxic substances (or different types of toxic substances) coexisting in a vapor state and a sol state in the air.
The technology can be used for simultaneously collecting toxic substances coexisting in a vapor state and a sol state in the air by assembling the sampling box 70 provided with the filter material 80, the first sample tube 20 and the second sample tube 30 respectively filled with the solid adsorbent 10 into an air sampling tube. The filter material 80 can collect gas sol toxic substances, and the sampling efficiency in the bearing capacity can reach 100%; the filter material can be glass fiber filter paper, quartz fiber filter paper or polytetrafluoroethylene filter paper, and solid adsorbents (or impregnated solid adsorbents) or combined solid adsorbents such as activated carbon, silica gel, XAD series resin, Carbopack series adsorbent, GDX series adsorbent, Tenax series porous polymer, molecular sieve and the like are used as the solid adsorbent 10 to collect toxic substances in vapor state. In order to better collect toxic substances coexisting in a vapor state and a sol state in the air for a long time, the internal diameters of the first sample tube 20 and the second sample tube 30 are designed to be 0.4-0.5 times of the internal diameter of the sampling box 70, so that more solid adsorbents 10 are filled, and higher sampling flow is used, therefore, the sampling box 70 can be perfectly matched with the sampling boxes 70 connected in series for use, the sampling efficiency of the filled solid adsorbents on components to be detected can be ensured to be more than 90%, and meanwhile, the penetration capacity of the filled solid adsorbents 10 on the components to be detected can meet the requirement that the sampling can be carried out for at least 2 hours under the condition of 2 times of occupational contact limit concentration. For the treated filter material 80 and the solid adsorbent 10, a proper solvent is used as an elution/desorption solution (such as toluene, n-hexane, acetone, carbon disulfide and the like), and after vortex oscillation (or ultrasonic) treatment, the elution/desorption solution is separated by a chromatographic column and detected by a chromatography (or mass spectrometry). The sampling tube can sample at any time in any sampling mode, such as fixed-point long-time/short-time sampling or individual long-time/short-time sampling, and can simultaneously sample and detect a certain type of toxic substances (or different types of toxic substances) coexisting in a vapor state and a sol state in the air, so that the sampling tube has wide application prospect.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a series connection air sampling pipe, its characterized in that, including the solid adsorbent that can gather vapour attitude noxious material, the filter material that can gather aerosol attitude noxious material, place the sampling box of filter material, pack have the sampling pipe of solid adsorbent, with the sampling box can dismantle the first sealed cap of connection and with the sealed cap of second that the connection can be dismantled to the sampling pipe, the one end of sampling box is connected with first sealed cap, the other end with the one end intercommunication of sampling pipe can be dismantled and be connected, the other end of sampling pipe is connected with the sealed cap of second.
2. The serial air sampling tube of claim 1, wherein the sampling tube comprises a first sample tube and a second sample tube, the first sample tube and the second sample tube are filled with the solid adsorbent, one end of the first sample tube is communicated with and detachably connected to the sampling box, the other end of the first sample tube is communicated with and detachably connected to one end of the second sample tube, and the other end of the second sample tube is connected to the second sealing cap.
3. The tandem air sampling tube according to claim 2, wherein a first air outlet tube is arranged at one end of the first sample tube connected with the second sample tube, the first air outlet tube is inserted into the second sample tube, a first sealing ring is sealed between the outer wall of the first air outlet tube and the inner wall of the second sample tube, and the first sealing ring is sleeved on the first air outlet tube.
4. The tandem air sampling tube of claim 3, wherein a first compacting plate, a first gas permeable isolating member, the solid adsorbent and a second gas permeable isolating member are sequentially arranged in the second sample tube from one end matched with the first air outlet tube to the other end, a second compacting plate, a third gas permeable isolating member, the solid adsorbent and a fourth gas permeable isolating member are sequentially arranged in the first sample tube from one end matched with the sampling box to the other end, and gas permeable holes are formed in the first compacting plate and the second compacting plate.
5. The inline air sampling tube of claim 4, wherein the first, second, third and fourth gas-permeable partitions are all plastic foam or glass wool, and the first and second compression plates are metal rings or elastic plastic rings.
6. The tandem air sampling tube of claim 2, wherein a second air outlet tube is disposed at an end of the second sample tube connected to the second sealing cap, and the second air outlet tube is sleeved in the second sealing cap and is connected to the second sealing cap by a bayonet snap fit or a screw thread.
7. The in-line air sampling tube of any one of claims 2 to 6, wherein the cartridge, the first sample tube and the second sample tube are all of a plastic material.
8. The serially-connected air sampling tube of any one of claims 2 to 6, wherein a third air outlet tube is arranged at one end of the sampling box connected with the first sample tube, the third air outlet tube is inserted into the first sample tube, a second sealing ring is sealed between the outer wall of the third air outlet tube and the inner wall of the first sample tube, and the second sealing ring is sleeved on the third air outlet tube.
9. The serial air sampling tube of claim 8, wherein the sampling box comprises an upper cover and a lower cover which are connected through a thread, a sampling cavity is formed between the upper cover and the lower cover in a matching manner, the filter material and a supporting pad for supporting the filter material are placed in the sampling cavity, and the third air outlet tube is communicated with the sampling cavity.
10. The in-line air sampling tube of claim 9, wherein the upper cap has an air inlet conduit communicating with the sampling chamber, and the first sealing cap has a connecting rod sleeved in the air inlet conduit and connected to the air inlet conduit by a bayonet-fit or a threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921900646.XU CN211904803U (en) | 2019-11-06 | 2019-11-06 | Series connection air sampling pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921900646.XU CN211904803U (en) | 2019-11-06 | 2019-11-06 | Series connection air sampling pipe |
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| CN211904803U true CN211904803U (en) | 2020-11-10 |
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| CN201921900646.XU Active CN211904803U (en) | 2019-11-06 | 2019-11-06 | Series connection air sampling pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793773A (en) * | 2023-08-25 | 2023-09-22 | 安徽农业大学 | Malodorous gas sampling device for livestock farm |
| CN117686288A (en) * | 2023-12-01 | 2024-03-12 | 北京市科学技术研究院城市安全与环境科学研究所 | Pump-free gas sampling device |
-
2019
- 2019-11-06 CN CN201921900646.XU patent/CN211904803U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793773A (en) * | 2023-08-25 | 2023-09-22 | 安徽农业大学 | Malodorous gas sampling device for livestock farm |
| CN116793773B (en) * | 2023-08-25 | 2023-11-07 | 安徽农业大学 | Malodorous gas sampling device for livestock farm |
| CN117686288A (en) * | 2023-12-01 | 2024-03-12 | 北京市科学技术研究院城市安全与环境科学研究所 | Pump-free gas sampling device |
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