CN213813048U - Convenient negative pressure gas sampler - Google Patents
Convenient negative pressure gas sampler Download PDFInfo
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- CN213813048U CN213813048U CN202021668335.8U CN202021668335U CN213813048U CN 213813048 U CN213813048 U CN 213813048U CN 202021668335 U CN202021668335 U CN 202021668335U CN 213813048 U CN213813048 U CN 213813048U
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- air inlet
- rod
- air
- piston
- negative pressure
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Abstract
The utility model relates to a gas sampling ware field discloses convenient type negative pressure gas sampling ware. The method comprises the following steps: the air intake pipe is located the air inlet unit that the air intake pipe is interval distribution, and air inlet unit includes: the device comprises a sealing assembly used for opening or closing the communication between the air inlet device and the air suction pipeline, a vacuum sampling bag connected with the air inlet device in a threaded manner and used for collecting gas, and a connecting assembly arranged between the sealing assemblies and used for alternately sampling the air inlet device. The utility model discloses a suction line, air inlet unit, seal assembly, vacuum sampling bag and coupling assembling's setting can carry out the automatic gaseous sampling of mutual alternation, does not need stop device to carry out the gas storage and changes, and is efficient, and the practicality is good.
Description
Technical Field
The utility model relates to a gas sampling ware field, in particular to convenient type negative pressure gas sampling ware.
Background
The gas sampler refers to a process for collecting a sample of pollutants in the atmosphere or a sample of contaminated air. There are two types of collection methods: one is to make a large amount of air pass through a liquid absorbent or a solid adsorbent to enrich pollutants with lower concentration in the atmosphere, such as an air extraction method and a filter membrane method; another type is to collect the air containing the contaminants with containers (glass bottles, plastic bags, etc.). The former measures the average concentration of the contaminant in the atmosphere over the sampling time, and the latter measures the instantaneous concentration or the average concentration over a short period of time. The sampling mode is determined according to the sampling purpose and the field situation, the sampled product is representative, the sampling efficiency is high, the operation is simple and convenient, and the subsequent analysis and determination are convenient to obtain reliable basic data of gas pollution. Present gas sample thief is all through the aspiration pump to use the electric energy as the power supply, make the aspiration pump sample of bleeding, however, in the aforesaid, if remove outdoor, carry out a large amount of and quick sampling to gas, then can't satisfy gas sampling efficiency, use the operation strictly, the practicality is not good.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a convenient type negative pressure gas sampling ware through the setting of breathing in pipeline, air inlet unit, seal assembly, vacuum sampling bag and coupling assembling, can carry out the automatic gas sampling of mutual alternation, does not need stop device to carry out the gas storage and changes, and is efficient, and the practicality is good.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
convenient type negative pressure gas sampler, its characterized in that includes:
an air intake duct;
locate the air intake system that the pipeline of breathing in is interval distribution, air intake system includes: the vacuum sampling device comprises a sealing assembly used for opening or closing the air inlet device and communicated with the air suction pipeline, a vacuum sampling bag connected with the air inlet device in a threaded manner and used for collecting gas, and a connecting assembly arranged between the sealing assemblies and used for alternately sampling the air inlet device.
When the technical scheme is realized, when gas is sampled, the gas suction pipeline sucks the sampled gas, the sealing assembly is opened, the gas inlet device is communicated with the vacuum sampling bag, the gas pressure inside the vacuum sampling bag is lower than the outside, the sampled gas automatically enters the vacuum sampling bag, after a period of time, the gas inlet device and the gas suction pipeline are separated by the sealing assembly, and at the moment, the gas storage of the vacuum sampling bag is completed. Through the cooperation of seal assembly and coupling assembling, open another air inlet unit, former air inlet unit closes, and another vacuum sampling bag admits air, and it is gaseous just to sample above-mentioned action of repetition.
As a preferred aspect of the present invention, the air inlet device includes: the air inlet piston is connected with the air inlet shell; the air inlet shell is internally provided with an air inlet cavity along the height direction of the air inlet shell, the bottom of the air inlet cavity is provided with a threaded hole, the air inlet cavity is internally provided with the fixed plug, the fixed plug is internally provided with a through hole along the height direction of the fixed plug, the through hole is communicated with the threaded hole, the fixed plug is internally provided with the first spring, the air inlet piston is arranged in the air cavity, the air inlet hole is formed in the air inlet piston, the bottom of the air inlet piston is provided with the piston rod, the piston rod extends into the through hole and is connected with the first spring, the piston rod is provided with a sealing ring sleeve, and the sealing ring sleeve is abutted against the fixed plug.
When the air inlet device is communicated with the air suction pipeline, the piston rod is pushed to move upwards by the spring force generated by the first spring, the air inlet piston synchronously moves upwards, the sealing ring sleeve on the piston rod is far away from the surface of the fixing plug, and the through hole of the fixing plug is communicated with the air inlet cavity, the air inlet hole and the air suction pipeline.
As a preferred scheme of the utility model, be provided with sealed the pad between sealed ring cover and the fixed stopper.
According to the technical scheme, the sealing performance of the air inlet device without sampling gas is improved by the arrangement of the sealing gasket.
As a preferred aspect of the present invention, the sealing assembly includes: the positioning blocking rod, the stretching rod, the second spring, the speed reducing motor, the rotating disc and the clamping block are arranged; the air inlet shell is internally provided with the stretching rod, one end of the stretching rod is provided with the positioning blocking rod, the air inlet shell is internally provided with a positioning groove matched with the positioning blocking rod, and the positioning blocking rod is pressed on the air inlet piston to block air from entering; the positioning stop rod is sleeved with a second spring which is positioned on the air inlet shell, the other end of the stretching rod is provided with a pulling part, the outer side of the air inlet shell is provided with a fixed table, the fixed table is provided with a speed reduction motor, the speed reduction motor is sleeved with a rotating disc, and a clamping groove matched with the clamping block is formed in the rotating disc.
When the technical scheme is realized, when gas is sampled, the speed reducing motor is started, the pulling part is pulled outwards by hands, the stretching rod moves rightwards, the second spring is in a stretching state, one end of the positioning blocking rod is withdrawn from the positioning groove, and the positioning blocking rod is withdrawn from the air inlet hole originally pressed on the air inlet piston, so that the sampling gas flows into the air inlet hole, when the pulling part moves rightwards, the clamping block is withdrawn from the clamping groove of the rotating disc, one end of the clamping block is propped against the arc-shaped surface of the rotating disc, the rotating disc rotates along with the speed reducing motor, after a period of time, the clamping groove on the rotating disc is matched with the clamping block again, at the moment, the vacuum sampling bag finishes sampling, and one end of the positioning blocking rod is matched with the positioning groove again through the spring force generated by the second spring and is pressed on the air inlet hole on the air inlet piston to block the sampling gas of the air suction pipeline.
As an optimized proposal of the utility model, the air port of the vacuum sampling bag is connected with the air inlet shell by screw thread and extends into the through hole.
Realize above-mentioned technical scheme, because the inside atmospheric pressure of vacuum sampling bag is lower than the external world, use the negative pressure to attract the automatic vacuum sampling bag that gets into of external gas in, gaseous sampling speed is fast, and it is convenient to use, efficient.
As a preferred aspect of the present invention, the connecting assembly includes: the first connecting rod, the rotating shaft and the second connecting rod; the first connecting rod is arranged on the pulling part of one sealing assembly, the second connecting rod is arranged on the pulling part of the other sealing assembly, and the first connecting rod and the second connecting rod are connected through the rotating shaft.
According to the technical scheme, when the vacuum sampling bag is used for collecting gas, the clamping groove is matched with the clamping block again, the pulling portion moves upwards to drive the first connecting rod to move upwards, the second connecting rod moves downwards through the rotating shaft, the other clamping block is withdrawn from the clamping groove and abuts against the arc-shaped surface of the rotating disc, and the action is repeated to sample the gas.
To sum up, the utility model discloses following beneficial effect has: the utility model discloses when sampling gas, the pipeline of breathing in inhales the sampling gas, opens seal assembly, makes air inlet unit and vacuum sampling bag intercommunication, because the inside atmospheric pressure of vacuum sampling bag is lower than the external world, in the sampling gas automatic entering vacuum sampling bag, after a period, air inlet unit and the pipeline of breathing in are cut off to rethread seal assembly, and at this moment, vacuum sampling bag gas storage is accomplished. Through the cooperation of seal assembly and coupling assembling, open another air inlet unit, former air inlet unit closes, and another vacuum sampling bag admits air, repeats the above-mentioned action and samples gas, can carry out the gaseous sampling of automatic each other in turn, does not need the stop device to carry out the gas storage and changes, and is efficient, and the practicality is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall closed structure of the present invention.
Fig. 2 is a schematic view of the two alternative sampling overlooking structure of the present invention.
Fig. 3 is a schematic view of the whole air suction structure of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1. an air intake duct; 2. an air inlet cavity; 3. an air intake housing; 4. a second spring; 5. a stretch rod; 6. a pulling part; 7. rotating the disc; 8. a clamping block; 9. a reduction motor; 10. a fixed table; 11. positioning the blocking rod; 12. positioning a groove; 13. an air inlet; 14. an intake piston; 15. a piston rod; 16. sealing the ring sleeve; 17. a gasket; 18. a through hole; 19. a fixed plug; 20. a first spring; 21. a threaded hole; 22. a vacuum sampling bag; 23. a first connecting rod; 24. a rotating shaft; 25. a second connecting rod; 26. a clamping groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Examples
As shown in fig. 1 to 3, the utility model discloses a convenient type negative pressure gas sampler, a serial communication port, include: air intake duct 1 locates air intake duct 1 and is interval distribution's air inlet unit, and air intake unit includes: the device comprises a sealing assembly for opening or closing the communication between the air inlet device and the air suction pipeline 1, a vacuum sampling bag 22 which is in threaded connection with the air inlet device and is used for collecting gas, and a connecting assembly which is arranged between the sealing assemblies and is used for alternately sampling the air inlet device.
Wherein, air inlet unit includes: an air inlet shell 3, an air inlet piston 14, a fixed plug 19 and a first spring 20, wherein an air inlet cavity 2 along the height direction of the air inlet shell 3 is arranged in the air inlet shell 3, a threaded hole 21 is arranged at the bottom of the air inlet cavity 2, a fixed plug 19 is arranged in the air inlet cavity 2, a through hole 18 is formed in the fixing plug 19 along the height direction of the fixing plug 19, the through hole 18 is communicated with the threaded hole 21, in the fixed plug 19, a first spring 20 is arranged, in the air chamber an inlet piston 14 is arranged, an air inlet hole 13 is arranged in the air inlet piston 14, a piston rod 15 is arranged at the bottom of the air inlet piston 14, the piston rod 15 extends into the through hole 18 and is connected with a first spring 20, a sealing ring 16 is arranged on the piston rod 15, the sealing ring 16 abuts against a fixed plug 19, a sealing gasket 17 is arranged between the sealing ring sleeve 16 and the fixing plug 19, and the sealing performance of the air inlet device without sampling gas is improved through the arrangement of the sealing gasket 17.
When the air inlet device is communicated with the air suction pipeline 1, the piston rod 15 is pushed to move upwards by the spring force generated by the first spring 20, the air inlet piston 14 synchronously moves upwards, the sealing ring sleeve 16 on the piston rod 15 is far away from the surface of the fixed plug 19, and the through hole 18 of the fixed plug 19 is communicated with the air inlet cavity 2, the air inlet hole 13 and the air suction pipeline 1.
Further, the seal assembly includes: the device comprises a positioning blocking rod 11, a stretching rod 5, a second spring 4, a speed reducing motor 9, a rotating disc 7 and a clamping block 8, wherein the stretching rod 5 is arranged in an air inlet shell 3, the positioning blocking rod 11 is arranged at one end of the stretching rod 5, a positioning groove 12 matched with the positioning blocking rod 11 is arranged in the air inlet shell 3, the positioning blocking rod 11 is pressed on an air inlet piston 14, blocking gas enters, the second spring 4 positioned in the air inlet shell 3 is sleeved on the positioning blocking rod 11, a pulling part 6 is arranged at the other end of the stretching rod 5, a fixing table 10 is arranged on the outer side of the air inlet shell 3, the speed reducing motor 9 is arranged on the fixing table 10, the rotating disc 7 is sleeved on the speed reducing motor 9, and a clamping groove 26 matched with the clamping block 8 is formed in the rotating disc 7.
When gas is sampled, the speed reducing motor 9 is started, the pulling part 6 is pulled outwards by hand to enable the stretching rod 5 to move rightwards, the second spring 4 is in a stretching state, one end of the positioning blocking rod 11 is withdrawn from the positioning groove 12, the positioning blocking rod 11 is withdrawn from the air inlet hole 13 originally pressed on the air inlet piston 14 to enable sampling gas to flow into the air inlet hole 13, when the pulling part 6 moves rightwards, the fixture block 8 is withdrawn from the clamping groove 26 of the rotating disc 7, one end of the fixture block 8 is abutted against the arc-shaped surface of the rotating disc 7, the rotating disc 7 rotates along with the speed reducing motor 9, after a period of time, the clamping groove 26 on the rotating disc 7 is matched with the fixture block 8 again, at the moment, the vacuum sampling bag 22 finishes sampling, one end of the positioning blocking rod 11 is matched with the positioning groove 12 again through the spring force generated by the second spring 4 and is pressed on the air inlet hole 13 on the air inlet piston 14, the sampling gas of the suction pipe 1 is blocked.
Further, the air port of the vacuum sampling bag 22 is screwed with the air inlet housing 3 and extends into the through hole 18. Because the inside atmospheric pressure of vacuum sampling bag 22 is lower than external, use the negative pressure to attract external gas automatic entering vacuum sampling bag 22 in, gaseous sampling speed is fast, and it is convenient to use, efficient.
Further, the connection assembly includes: the sealing device comprises a first connecting rod 23, a rotating shaft 24 and a second connecting rod 25, wherein the first connecting rod 23 is arranged on the pulling part 6 of one sealing assembly, the second connecting rod 25 is arranged on the pulling part 6 of the other sealing assembly, and the first connecting rod 23 and the second connecting rod 25 are connected through the rotating shaft 24.
In fig. 2, when the vacuum sampling bag 22 finishes the collection and the clamping groove 26 is mated with the clamping block 8 again, the pulling part 6 moves upwards to drive the first connecting rod 23 to move upwards, the second connecting rod 25 moves downwards through the rotating shaft 24, the other clamping block 8 is withdrawn from the clamping groove 26 and is abutted against the arc-shaped surface of the rotating disc 7, and the actions are repeated to sample gas.
In this embodiment, the utility model discloses when sampling gas, the pipeline of breathing in 1 inhales the sampling gas, opens seal assembly, makes air inlet unit and vacuum sampling bag 22 intercommunication, because the inside atmospheric pressure of vacuum sampling bag 22 is lower than the external world, and the sampling gas is automatic to enter into in the vacuum sampling bag 22, after a period, and air inlet unit and the pipeline of breathing in 1 are cut off to rethread seal assembly, and at this moment, vacuum sampling bag 22 gas storage is accomplished. Through the cooperation of seal assembly and coupling assembling, open another air inlet unit, former air inlet unit closes, and another vacuum sampling bag 22 admits air, repeats the above-mentioned action and samples gas, can carry out the gaseous sampling of automatic each other in turn, does not need the stop device to carry out the gas storage and changes, and is efficient, and the practicality is good.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. Convenient type negative pressure gas sampler, its characterized in that includes:
an air intake duct;
locate the air intake system that the pipeline of breathing in is interval distribution, air intake system includes: the vacuum sampling device comprises a sealing assembly used for opening or closing the air inlet device and communicated with the air suction pipeline, a vacuum sampling bag connected with the air inlet device in a threaded manner and used for collecting gas, and a connecting assembly arranged between the sealing assemblies and used for alternately sampling the air inlet device.
2. The portable negative pressure gas sampler of claim 1, wherein the gas inlet means comprises: the air inlet piston is connected with the air inlet shell; the air inlet shell is internally provided with an air inlet cavity along the height direction of the air inlet shell, the bottom of the air inlet cavity is provided with a threaded hole, the air inlet cavity is internally provided with the fixed plug, the fixed plug is internally provided with a through hole along the height direction of the fixed plug, the through hole is communicated with the threaded hole, the fixed plug is internally provided with the first spring, the air inlet piston is arranged in the air cavity, the air inlet hole is formed in the air inlet piston, the bottom of the air inlet piston is provided with a piston rod, the piston rod extends into the through hole and is connected with the first spring, the piston rod is provided with a sealing ring sleeve, and the sealing ring sleeve is abutted against the fixed plug.
3. The portable negative pressure gas sampler according to claim 2, wherein a sealing gasket is disposed between the sealing ring sleeve and the fixed plug.
4. The portable negative pressure gas sampler according to claim 2, wherein the seal assembly comprises: the positioning blocking rod, the stretching rod, the second spring, the speed reducing motor, the rotating disc and the clamping block are arranged; the air inlet shell is internally provided with the stretching rod, one end of the stretching rod is provided with the positioning blocking rod, the air inlet shell is internally provided with a positioning groove matched with the positioning blocking rod, and the positioning blocking rod is pressed on the air inlet piston to block air from entering; the positioning blocking rod is sleeved with a second spring which is positioned on the air inlet shell, the other end of the stretching rod is provided with a pulling part, the outer side of the air inlet shell is provided with a fixed table, the fixed table is provided with a speed reduction motor, the speed reduction motor is sleeved with a rotating disc, and a clamping groove matched with the clamping block is formed in the rotating disc.
5. The portable negative pressure gas sampler according to claim 2, wherein the gas port of the vacuum sampling bag is threaded to the air intake housing and extends into the through hole.
6. The portable negative pressure gas sampler according to claim 4, wherein the connection assembly comprises: the first connecting rod, the rotating shaft and the second connecting rod; the first connecting rod is arranged on the pulling part of one sealing assembly, the second connecting rod is arranged on the pulling part of the other sealing assembly, and the first connecting rod and the second connecting rod are connected through the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021668335.8U CN213813048U (en) | 2020-08-12 | 2020-08-12 | Convenient negative pressure gas sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021668335.8U CN213813048U (en) | 2020-08-12 | 2020-08-12 | Convenient negative pressure gas sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213813048U true CN213813048U (en) | 2021-07-27 |
Family
ID=76950660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021668335.8U Active CN213813048U (en) | 2020-08-12 | 2020-08-12 | Convenient negative pressure gas sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213813048U (en) |
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2020
- 2020-08-12 CN CN202021668335.8U patent/CN213813048U/en active Active
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