CN221148224U - Gas sampling device - Google Patents
Gas sampling device Download PDFInfo
- Publication number
- CN221148224U CN221148224U CN202322829206.2U CN202322829206U CN221148224U CN 221148224 U CN221148224 U CN 221148224U CN 202322829206 U CN202322829206 U CN 202322829206U CN 221148224 U CN221148224 U CN 221148224U
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- China
- Prior art keywords
- fixed
- inlet pipe
- shell
- air inlet
- piston
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- 238000005070 sampling Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a gas sampling device which comprises a piston shell, a connecting shell and an air inlet pipe, wherein the connecting shell is arranged at the top end of the piston shell, a sealing structure is arranged in the connecting shell, the air inlet pipe is fixed at the top end of the connecting shell, a dust filtering structure is arranged at the top end of the air inlet pipe, the sealing structure comprises a fixing seat, a spring, a pushing block, a rubber pad and a guide rod, the fixing seat is fixed in the connecting shell, and the guide rod is inserted in the fixing seat. The utility model provides a gas sampling device, which is characterized in that a pushing block is pushed by a spring to move so as to seal a gas inlet pipe, so that the leakage of sampled gas is prevented, and the rubber pad is pushed by atmospheric pressure to move downwards during air suction so as to open the gas inlet pipe.
Description
Technical Field
The utility model relates to the technical field of gas sampling, in particular to a gas sampling device.
Background
The gas sampling is a method for collecting a pollutant sample or a polluted air sample in the atmosphere, and the collecting method generally uses a container such as a glass bottle, a plastic bag and the like to collect the air containing the pollutant, and the device is a container for gas sampling and is used for storing and conveying sampled gas;
Chinese patent grant publication No. CN219328648U, publication day 2023, month 07 and 11, discloses a gas sampling device, which comprises a pipe body, the one end fixed mounting of body has the filter tip, the one end fixed mounting that the filter tip was kept away from to the body has the back seat, the internal surface sliding connection of body has the baffle, the fixed surface of baffle installs the pull rod, the one end fixed mounting of pull rod has the handle, the surface fixed mounting of pull rod has the extension spring, the fixed surface of body installs the gas-supply pipe, the one end fixed mounting of gas-supply pipe has the fixture block, the internal surface fixed mounting of fixture block has the filter screen. According to the utility model, through arranging the structures such as the clamping block and the filter screen, the clamping block and the gas pipe can be connected more tightly and firmly, the air tightness of the device can be ensured to be perfect, the filter screen is arranged on the clamping block, and the filter screen can filter the gas entering the gas storage tank, so that the purity of the gas entering the gas storage tank is ensured to be higher;
the prior technical proposal has the following defects: when the device is used, the defect that gas is easy to leak is overcome, and part of air is easy to be discharged through the air inlet pipe in the process of discharging the air to the exhaust pipe, so that a gas sample is leaked, and the air quality of a laboratory is influenced.
Disclosure of utility model
The present utility model is directed to a gas sampling apparatus, which solves the above-mentioned problems of the prior art.
The utility model provides a gas sampling device, which comprises a piston shell, a connecting shell and an air inlet pipe, wherein the top end of the piston shell is provided with the connecting shell, a sealing structure is arranged in the connecting shell, the top end of the connecting shell is fixedly provided with the air inlet pipe, the top end of the air inlet pipe is provided with a dust filtering structure, the sealing structure comprises a fixing seat, a spring, a pushing block, a rubber pad and a guide rod, the fixing seat is fixed in the connecting shell, and the guide rod is inserted in the fixing seat.
The air inlet pipe is sealed by pushing the pushing block to move through the spring, so that the leakage of sampling gas is prevented, the rubber pad is pushed to move downwards by atmospheric pressure during air extraction, and the air inlet pipe is opened, so that the isolation sealing function of the device is realized, the air inlet pipe is convenient to isolate and seal, the air inlet pipe can only enter air, the air is prevented from being discharged through the air inlet pipe, and the functionality of the device is enhanced;
further, a pushing block is fixed at the top end of the guide rod, a spring is sleeved on the outer side of the guide rod, and a rubber pad is fixed at the top end of the pushing block. When the air is pumped, the atmospheric pressure pushes the rubber pad to move downwards, the air inlet pipe is opened, air enters the piston shell, the spring pushes the pushing block to reset to seal the air inlet pipe, and the sampling gas is prevented from leaking.
Further, a sliding structure is formed between the guide rod and the fixed seat, and the rubber pad and the air inlet pipe are positioned on the same vertical center.
Further, the valve is installed to one side of coupling shell, one side of valve is connected with the blast pipe, the bottom mounting of piston shell has the piston rod, the inside of piston shell is provided with airtight piston, the bottom mounting of airtight piston has the pull rod, the bottom mounting of pull rod has the handle.
Further, the dust filtering structure comprises a mounting cover, a sealing ring, a filter screen and a connecting pipe, wherein the connecting pipe is fixed in the top end of the air inlet pipe, and the outer side of the connecting pipe is sleeved with the mounting cover. Foreign matters are prevented from being sucked into the device through the filter screen, the installation cover is rotated to enable the installation cover to be separated from the connecting pipe through threads, and the installation cover is replaced.
Through the inside that the filter screen prevented the foreign matter by the inhalation device, rotate the installation lid and make installation lid and connecting pipe pass through the screw thread separation, change the installation lid, realized this device from this that air inlet filter function, be convenient for filter the dust of air, make the inner wall of piston shell keep clean, prevent that the dust from influencing the sealed effect between piston shell and the airtight piston
Further, a sealing ring is fixed at the top end of the inside of the installation cover, and a filter screen is fixed in the inside of the top end of the installation cover.
Further, external threads are arranged on the outer side wall of the connecting pipe, and internal threads matched with the external threads are arranged inside the mounting cover.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present utility model;
FIG. 2 is a schematic cross-sectional elevation view of the present utility model;
FIG. 3 is an enlarged partial cross-sectional view of the structure of FIG. 2A according to the present utility model;
Fig. 4 is a schematic cross-sectional elevation view of the seal structure of the present utility model.
Reference numerals in the drawings illustrate: 1. a piston housing; 2. a connection housing; 3. an air inlet pipe; 4. a dust filtering structure; 401. a mounting cover; 402. a seal ring; 403. a filter screen; 404. a connecting pipe; 5. a valve; 6. an exhaust pipe; 7. a piston rod; 8. a handle; 9. a sealing structure; 901. a fixing seat; 902. a spring; 903. a pushing block; 904. a rubber pad; 905. a guide rod; 10. an airtight piston; 11. and (5) a pull rod.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
The embodiment of the utility model provides a gas sampling device, as shown in fig. 1-4, the gas sampling device comprises a piston shell 1, a connecting shell 2 and an air inlet pipe 3, wherein the connecting shell 2 is arranged at the top end of the piston shell 1, a sealing structure 9 is arranged in the connecting shell 2, the air inlet pipe 3 is fixed at the top end of the connecting shell 2, a dust filtering structure 4 is arranged at the top end of the air inlet pipe 3, the sealing structure 9 comprises a fixing seat 901, a spring 902, a pushing block 903, a rubber pad 904 and a guide rod 905, the fixing seat 901 is fixed in the connecting shell 2, the guide rod 905 is inserted in the fixing seat 901, a valve 5 is arranged at one side of the connecting shell 2, an exhaust pipe 6 is connected at one side of the valve 5, a piston rod 7 is fixed at the bottom end of the piston shell 1, an airtight piston 10 is arranged in the piston 1, a pull rod 11 is fixed at the bottom end of the airtight piston 10, and a handle 8 is fixed at the bottom end of the pull rod 11.
Specifically, in the present embodiment, by pulling the handle 8, the handle 8 drives the airtight piston 10 to move inside the piston housing 1 through the pull rod 11, the gas to be detected is drawn into the interior of the piston housing 1 through the gas inlet pipe 3, and when the gas is discharged, the gas outlet pipe 6 is connected with the detection device, the valve 5 is opened, and the handle 8 is pushed to discharge the gas inside the piston housing 1 through the gas outlet pipe 6.
In a further preferred embodiment of the present utility model, as shown in FIGS. 1-4: a push block 903 is fixed at the top end of the guide rod 905, a spring 902 is sleeved outside the guide rod 905, a rubber pad 904 is fixed at the top end of the push block 903, a sliding structure is formed between the guide rod 905 and the fixed seat 901, and the rubber pad 904 and the air inlet pipe 3 are positioned on the same vertical center.
Specifically, in this embodiment, when the airtight piston 10 is pulled to move inside the piston housing 1, the air pressure inside the piston housing 1 is lower than the air pressure inside the air inlet pipe 3, so that the air pressure pushes the rubber pad 904 to move downward, the air inlet pipe 3 is opened, air enters the inside of the piston housing 1, and when the airtight piston 10 stops moving, the air pressure between the piston housing 1 and the air inlet pipe 3 is balanced, so that the spring 902 pushes the push block 903 to reset to seal the air inlet pipe 3, the sampling gas is prevented from leaking, and the rubber pad 904 is conveniently aligned with the air inlet pipe 3 by moving the guide rod 905 inside the fixing seat 901.
In a further preferred embodiment of the present utility model, as shown in FIGS. 1-4: the dust filtering structure 4 comprises a mounting cover 401, a sealing ring 402, a filter screen 403 and a connecting pipe 404, wherein the connecting pipe 404 is fixed inside the top end of the air inlet pipe 3, the mounting cover 401 is sleeved outside the connecting pipe 404, the sealing ring 402 is fixed on the top end inside the mounting cover 401, the filter screen 403 is fixed inside the top end of the mounting cover 401, external threads are arranged on the outer side wall of the connecting pipe 404, and internal threads matched with the external threads are arranged inside the mounting cover 401.
Specifically, in the present embodiment, the air that has entered the connection pipe 404 and the connection housing 2 is filtered by the filter screen 403, foreign matter is prevented from being sucked into the inside of the apparatus, and when too much foreign matter has accumulated on the surface of the filter screen 403, the attachment cover 401 is rotated to separate the attachment cover 401 from the connection pipe 404 by screw threads, and the attachment cover 401 is replaced.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (7)
1. A gas sampling apparatus, characterized in that: comprises a piston shell, a connecting shell and an air inlet pipe; a connecting shell is arranged at the top end of the piston shell, and a sealing structure is arranged in the connecting shell; an air inlet pipe is fixed at the top end of the connecting shell, and a dust filtering structure is arranged at the top end of the air inlet pipe; the sealing structure comprises a fixed seat, a spring, a pushing block, a rubber pad and a guide rod; the fixing seat is fixed in the connecting shell; the guide rod is inserted in the fixing seat.
2. A gas sampling apparatus according to claim 1, wherein: a pushing block is fixed at the top end of the guide rod; the outer side of the guide rod is sleeved with a spring; and a rubber pad is fixed at the top end of the pushing block.
3. A gas sampling apparatus according to claim 1, wherein: and a sliding structure is formed between the guide rod and the fixed seat, and the rubber pad and the air inlet pipe are positioned on the same vertical center.
4. A gas sampling apparatus according to claim 1, wherein: the valve is installed to one side of coupling shell, one side of valve is connected with the blast pipe, the bottom mounting of piston shell has the piston rod, the inside of piston shell is provided with airtight piston, the bottom mounting of airtight piston has the pull rod, the bottom mounting of pull rod has the handle.
5. A gas sampling apparatus according to claim 1, wherein: the dust filtering structure comprises a mounting cover, a sealing ring, a filter screen and a connecting pipe, wherein the connecting pipe is fixed inside the top end of the air inlet pipe, and the outer side of the connecting pipe is sleeved with the mounting cover.
6. The gas sampling apparatus of claim 5, wherein: the top of installation lid inside is fixed with the sealing washer, the inside at installation lid top is fixed with the filter screen.
7. The gas sampling apparatus of claim 5, wherein: external threads are arranged on the outer side wall of the connecting pipe, and internal threads matched with the external threads are arranged inside the mounting cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322829206.2U CN221148224U (en) | 2023-10-23 | 2023-10-23 | Gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322829206.2U CN221148224U (en) | 2023-10-23 | 2023-10-23 | Gas sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221148224U true CN221148224U (en) | 2024-06-14 |
Family
ID=91383364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322829206.2U Active CN221148224U (en) | 2023-10-23 | 2023-10-23 | Gas sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221148224U (en) |
-
2023
- 2023-10-23 CN CN202322829206.2U patent/CN221148224U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |