CN101975685A - Gas sampling apparatus adopting helical structure - Google Patents
Gas sampling apparatus adopting helical structure Download PDFInfo
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- CN101975685A CN101975685A CN 201010539694 CN201010539694A CN101975685A CN 101975685 A CN101975685 A CN 101975685A CN 201010539694 CN201010539694 CN 201010539694 CN 201010539694 A CN201010539694 A CN 201010539694A CN 101975685 A CN101975685 A CN 101975685A
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- cylinder
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- piston rod
- helical structure
- gas sampling
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Abstract
The invention relates to the field of a gas sampler, disclosing a gas sampling apparatus adopting a helical structure, which comprises a cylinder, a barrel body, a piston, a piston rod and a rocker arm, wherein the cylinder comprises a front wall of the cylinder, a side wall of the cylinder and a back wall of the cylinder; an air tap is arranged on the front wall of the cylinder; the air tap passes through the front wall of the cylinder to be communicated with the interior of the cylinder; internal threads are arranged on the back end of the barrel body; the front end of the barrel body is connected with the back wall of the cylinder; the barrel body is communicated with the interior of the cylinder; the piston is hermetically matched with the inner side of the side wall of the cylinder; the piston rod passes through the barrel body and the back wall of the cylinder; the front end of the piston rod is connected with a piston through a bearing which is in interference fit with the piston rod; external threads are arranged on the back part of the piston rod; the external threads are matched with the internal threads; and a rocker arm end hole is arranged on one end of the rocker arm so that the rocker arm is coordinately connected with the tail end of the piston rod. The apparatus of the invention utilizes the helical structure so as to save labor and easily control the speed and the schedule of the movement of the piston at the same time, and the total required air amount can be easily reached.
Description
Technical field
The present invention relates to the gas sampler field, relate in particular to a kind of gas sampling assembly that adopts helical structure.
Background technology
For the content of certain gas in the fast detecting air, need the using gases detector tube.The gas detector tube can detect the concentration that contains certain gas in the air, the corresponding a kind of detected gas of each detector tube, need the air of certain total amount (it is different that each detector tube requires, commonly used is 50ml and 100ml two kinds) just can reach the purpose of detection by detector tube during the detector tube detected gas.
For the air that makes certain total amount passes through detector tube, need using gases detector tube sampling thief, existing method is to use manual sampling thief, its method is that the air intake opening of detector tube is inserted the air that needs detection, its gas outlet is inserted the air intake opening of manual sampling thief, spur the handle on the sampling thief pull bar then, make the inner negative pressure space that forms a required sampling total amount of sampling thief, a pressure reduction is just arranged inside and outside the sampling thief like this, under the effect of atmospheric pressure, certain total amount air just can pass through detector tube, thereby has reached above purpose.The shortcoming of this method is: 1, method of sampling effort is not laborsaving; 2, piston displacement is long, makes its abrading machine meeting many, thereby reduces serviceable life.3, for only need move half range (as 50ml) to the time, the bad grasp of its strength size, it is not in place that strength is little, and strength is big just to have surpassed required range.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is to use sampling apparatus that gas is sampled how time saving and energy savingly, and reduces the displacement of piston, thereby reduces wear, and then prolongs the serviceable life of sampling apparatus.
(2) technical scheme
For solving the problems of the technologies described above, the present invention proposes a kind of gas sampling assembly that adopts helical structure, comprising:
Cylinder, described cylinder is made up of cylinder front wall, cylinder sidewall, cylinder rear wall, and described cylinder front wall is provided with valve, thus described valve penetrates the internal communication of described cylinder front wall and described cylinder;
Stack shell, the rear end of described stack shell is provided with internal thread, and the front end of described stack shell is connected the internal communication of described stack shell and described cylinder with described cylinder rear wall;
Piston, the tight fit inside of described piston and described cylinder sidewall;
Piston rod, described piston rod pass described stack shell and described cylinder rear wall, and the front end of described piston rod is by being connected with described piston with the bearing of its interference, and the rear portion of described piston rod is provided with external thread, described external thread and described screw-internal thread fit;
Rocking arm, an end of described rocking arm is provided with the rocking arm stomidium, thereby is connected with the tail end of described piston rod.
Wherein, also comprise crank, the vertical connection of the other end of described crank and described rocking arm.
Wherein, described piston rod is provided with pore, makes the inside and the outside atmosphere conducting of described cylinder.
Wherein, be provided with filter cotton in the described pore.
Wherein, described piston comprises piston main body and is arranged at piston main body near the piston header board of described cylinder front wall side with near plate behind the piston of described cylinder rear wall side, described piston header board is provided with equally distributed a plurality of bolt, described bolt passes plate behind described piston main body and the described piston, and is fixedly tightened by nut separately on plate behind the described piston.
Wherein, described bearing is arranged on the described piston header board, and the front end of described piston rod passes the center via hole of plate behind the center via hole of described piston main body and the described piston, and is connected with described piston header board by described bearing.
Wherein, the inboard of described cylinder rear wall is provided with a plurality of equally distributed grooves, and each groove is corresponding to a described nut.
Wherein, described cylinder rear wall and described stack shell are made into one, and described cylinder rear wall and described cylinder sidewall are fixed by equally distributed gib screw.
Wherein, the arranged outside of described stack shell has the ripple glaze structure.
Wherein, described cylinder sidewall is provided with a plurality of capacity marking scale marks.
(3) beneficial effect
Technique scheme of the present invention has following advantage: utilized helical structure, speed and progress that piston is moved are easy to control, are easy to the air total amount that reaches required; By increasing cylinder radius, cylinder length is shortened greatly, piston mobile distance in cylinder has just shortened greatly like this, thereby has significantly reduced the chance of its wearing and tearing, has prolonged its serviceable life.
Description of drawings
Fig. 1 is the structural representation of the gas sampling assembly embodiment of employing helical structure of the present invention.
Wherein, 1: crank; 2: rocking arm; 3: piston rod; 4: stack shell; 5: groove; 6: pore; 7: bearing; 8: nut; 9: bolt; 10: plate behind the piston; 11: gib screw; 12: the detector tube hole that fractures; 13: cylinder sidewall; 14: the piston header board; 15: valve; 16: cylinder front wall; 17: piston main body; 18: the cylinder rear wall; 19: internal thread; 20: external thread; 21: the capacity marking scale mark; 22: cylinder; 23: the ripple glaze structure; 24: the piston rod front end; 25: the piston rod tail end; 26: the rocking arm stomidium; 27: the screw via hole; 28: retaining thread; 29: piston main body center via hole; 30: plate center via hole behind the piston; 31: filter cotton; 32: piston.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Be illustrated in figure 1 as the synoptic diagram of the gas sampling assembly of employing helical structure of the present invention, comprise:
Stack shell 4, the rear end of stack shell 4 is provided with internal thread 19, stack shell 4 and cylinder 22 internal communication, and stack shell 4 is made one with cylinder rear wall 18, material be transparent high-strength abrasion-proof material (for example, polycarbonate), cylinder rear wall 18 is fixed by equally distributed gib screw 11 with cylinder sidewall 13, each gib screw 11 is fixed in the screw via hole 27 on the cylinder sidewall 13, be provided with retaining thread 28 in each screw via hole 27, the arranged outside of stack shell 4 has ripple glaze structure 23, also can be other structure that meets ergonomics;
Piston rod 3, piston rod 3 passes stack shell 4, and the front end of piston rod 3 passes plate center via hole 30 behind piston main body center via hole 29 and the piston, be connected with piston header board 14 by being arranged at bearing 7 on the piston header board 14 and its interference, the rear portion of piston rod 3 is provided with external thread 20, and external thread 20 cooperates with internal thread 19, piston rod 3 is provided with pore 6, make the inside and the outside atmosphere conducting of cylinder 22, be provided with filter cotton 31 in the pore 6, be used to filter the air that enters cylinder 22 inside;
Rocking arm 2, an end of rocking arm 2 is provided with rocking arm stomidium 26, the shape of rocking arm stomidium 26 is consistent with the tail end 25 of piston rod 3, be non-circular (for example, square) thus be connected with the tail end 25 of piston rod 3;
Crank 1, the vertical connection of the other end of crank 1 and rocking arm 2.
The specific operation process of apparatus of the present invention embodiment is: rocking arm stomidium 26 is inserted piston rod tail end 25, hold crank 1 drive rocking arm 2 and begin rotation, the and then rotation of whole piston rod 3, whole piston rod 3 moves forward under the acting in conjunction of internal thread 19 and external thread 20, thereby driving whole piston 32 moves forward, when piston header board 14 was attached to cylinder front wall 16, rocking arm 2 stopped the rotation.This moment, the end with wireway inserted valve 15, and the other end of wireway has been inserted good detector tube in advance, and detector tube has placed the air place that needs detection.Then, hold crank 1 and drive rocking arm 2 beginning opposite spins, under the acting in conjunction of internal thread 19 and external thread 20, whole piston rod 3 moves backward, thereby driving whole piston 32 moves backward, in this moving process, the air of cylinder postmedian is discharged from pore 6, the anterior negative pressure space that forms of cylinder, air enters detector tube under the atmospheric pressure effect, because the effect of screw thread resistance, atmospheric pressure can not make piston 32 move forward, if the air total amount that detector tube need the pass through represented capacity that is capacity marking scale mark 21 moves to piston header board 14 when aliging with these markings 21 when piston 32 so, rocking arm 2 just stops the rotation.If 22 max capies that can provide of cylinder are provided the air total amount that detector tube needs, piston 32 moves to when plate 10 is attached to cylinder rear wall 18 behind the piston so; rocking arm 2 just rotates motionless naturally; under the effect of atmospheric pressure, air just can reach the needed gas gross of this detector tube by the total amount of detector tube so.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (10)
1. a gas sampling assembly that adopts helical structure is characterized in that, comprising:
Cylinder (22), described cylinder (22) is made up of cylinder front wall (16), cylinder sidewall (13), cylinder rear wall (18), and described cylinder front wall (16) is provided with valve (15), described valve (15) penetrate described cylinder front wall (16) thus with the internal communication of described cylinder (22);
Stack shell (4), the rear end of described stack shell (4) is provided with internal thread (19), and the front end of described stack shell (4) is connected the internal communication of described stack shell (4) and described cylinder (22) with described cylinder rear wall (18);
Piston (32), the tight fit inside of described piston (32) and described cylinder sidewall (13);
Piston rod (3), described piston rod (3) passes described stack shell (4) and described cylinder rear wall (18), and the front end of described piston rod (3) is by being connected with described piston (32) with the bearing (7) of its interference, the rear portion of described piston rod (3) is provided with external thread (20), and described external thread (20) cooperates with described internal thread (19);
Rocking arm (2), an end of described rocking arm (2) is provided with rocking arm stomidium (26), thereby is connected with the tail end (25) of described piston rod (3).
2. the gas sampling assembly of employing helical structure as claimed in claim 1 also comprises crank (1), the vertical connection of the other end of described crank (1) and described rocking arm (2).
3. the gas sampling assembly of employing helical structure as claimed in claim 2 is characterized in that, described piston rod (3) is provided with pore (6), makes the inside and the outside atmosphere conducting of described cylinder (22).
4. the gas sampling assembly of employing helical structure as claimed in claim 3 is characterized in that, is provided with filter cotton (31) in the described pore (6).
5. the gas sampling assembly of employing helical structure as claimed in claim 4, it is characterized in that, described piston (32) comprises piston main body (17) and is arranged at piston main body (17) near the piston header board (14) of described cylinder front wall (16) side with near plate (10) behind the piston of described cylinder rear wall (18) side, described piston header board (14) is provided with equally distributed a plurality of bolt (9), described bolt (9) passes plate (10) behind described piston main body (17) and the described piston, and plate (10) is gone up and fixedly tightened by nut (8) separately behind described piston.
6. the gas sampling assembly of employing helical structure as claimed in claim 5, it is characterized in that, described bearing (7) is arranged on the described piston header board (14), the front end of described piston rod (3) passes the center via hole (30) of plate (10) behind the center via hole (29) of described piston main body (32) and the described piston, and is connected with described piston header board (14) by described bearing (7).
7. the gas sampling assembly of employing helical structure as claimed in claim 6 is characterized in that, the inboard of described cylinder rear wall (18) is provided with a plurality of equally distributed grooves (5), and each groove (5) is corresponding to a described nut (8).
8. the gas sampling assembly of employing helical structure as claimed in claim 7, it is characterized in that, described cylinder rear wall (18) is made into one with described stack shell (4), and described cylinder rear wall (18) is fixing by equally distributed gib screw (11) with described cylinder sidewall (13).
9. the gas sampling assembly of employing lever construction as claimed in claim 8 is characterized in that, the arranged outside of described stack shell (4) has ripple glaze structure (23).
10. as the gas sampling assembly of each described employing helical structure of claim 1-9, it is characterized in that described cylinder sidewall (13) is provided with a plurality of capacity marking scale marks (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010539694 CN101975685A (en) | 2010-11-09 | 2010-11-09 | Gas sampling apparatus adopting helical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010539694 CN101975685A (en) | 2010-11-09 | 2010-11-09 | Gas sampling apparatus adopting helical structure |
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| Publication Number | Publication Date |
|---|---|
| CN101975685A true CN101975685A (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010539694 Pending CN101975685A (en) | 2010-11-09 | 2010-11-09 | Gas sampling apparatus adopting helical structure |
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| CN (1) | CN101975685A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353147A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Natural gas sampling device |
| CN106353152A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Device for sampling |
| CN106353153A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Natural gas sampler |
| CN106351655A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Device for sampling of natural gas |
| CN106405002A (en) * | 2016-08-17 | 2017-02-15 | 钟文华 | Multi-azimuth air detection device for indoor air detection |
| CN111947981A (en) * | 2020-07-12 | 2020-11-17 | 水利部中国科学院水工程生态研究所 | Attached algae collection system |
Citations (5)
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|---|---|---|---|---|
| CN2055191U (en) * | 1988-12-21 | 1990-03-28 | 长岛县拆船公司 | Miniature manual pump |
| CN2341142Y (en) * | 1998-04-21 | 1999-09-29 | 杨洪新 | Controllable continuous batching gas sampler |
| CN1473175A (en) * | 2000-11-03 | 2004-02-04 | 伊斯曼化学公司 | Film and articles formed from blends of polycarbonate and polyester |
| US20060123886A1 (en) * | 2002-10-08 | 2006-06-15 | Giuliano Sciocchetti | Gaseous product detecting device |
| CN201892631U (en) * | 2010-11-09 | 2011-07-06 | 北京市劳动保护科学研究所 | Gas sampling device adopting helical structure |
-
2010
- 2010-11-09 CN CN 201010539694 patent/CN101975685A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055191U (en) * | 1988-12-21 | 1990-03-28 | 长岛县拆船公司 | Miniature manual pump |
| CN2341142Y (en) * | 1998-04-21 | 1999-09-29 | 杨洪新 | Controllable continuous batching gas sampler |
| CN1473175A (en) * | 2000-11-03 | 2004-02-04 | 伊斯曼化学公司 | Film and articles formed from blends of polycarbonate and polyester |
| US20060123886A1 (en) * | 2002-10-08 | 2006-06-15 | Giuliano Sciocchetti | Gaseous product detecting device |
| CN201892631U (en) * | 2010-11-09 | 2011-07-06 | 北京市劳动保护科学研究所 | Gas sampling device adopting helical structure |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353147A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Natural gas sampling device |
| CN106353152A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Device for sampling |
| CN106353153A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Natural gas sampler |
| CN106351655A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Device for sampling of natural gas |
| CN106353152B (en) * | 2015-07-16 | 2019-11-08 | 中国石油化工股份有限公司 | Device for sampling |
| CN106353147B (en) * | 2015-07-16 | 2019-11-08 | 中国石油化工股份有限公司 | Natural gas sampler |
| CN106405002A (en) * | 2016-08-17 | 2017-02-15 | 钟文华 | Multi-azimuth air detection device for indoor air detection |
| CN106405002B (en) * | 2016-08-17 | 2018-07-31 | 新疆中检联检测有限公司 | A kind of multi-faceted air detecting device of room air detection |
| CN111947981A (en) * | 2020-07-12 | 2020-11-17 | 水利部中国科学院水工程生态研究所 | Attached algae collection system |
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Application publication date: 20110216 |