CN215862163U - Pipe connecting assembly of gas chromatograph - Google Patents
Pipe connecting assembly of gas chromatograph Download PDFInfo
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- CN215862163U CN215862163U CN202121709352.6U CN202121709352U CN215862163U CN 215862163 U CN215862163 U CN 215862163U CN 202121709352 U CN202121709352 U CN 202121709352U CN 215862163 U CN215862163 U CN 215862163U
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- gas chromatograph
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Abstract
The utility model discloses a tube connecting assembly of a gas chromatograph, which comprises a first gas tube, a second gas tube and a switching part, wherein the first gas tube is connected with the gas chromatograph; the second air pipe is used for being connected with the air collecting bottle, and the pipe diameter of the second air pipe is larger than that of the first air pipe; the switching part is the tubular structure, and the both ends of switching part set up first through-hole and second through-hole respectively, and first through-hole intercommunication second through-hole, and first through-hole is worn to locate by first tracheal tip and is stretched into to the second through-hole, and the sealed cooperation of the inner wall of first tracheal outer wall and first through-hole, the second through-hole is worn to locate by the tracheal tip of second to the sealed cooperation of the inner wall of tracheal outer wall of second and second through-hole. The utility model can transfer the small-diameter air pipe to the large-diameter air pipe, and can reduce the probability of air pipe blockage.
Description
Technical Field
The utility model relates to the technical field of gas chromatographs, in particular to a pipe connecting assembly of a gas chromatograph.
Background
The gas chromatograph is mainly used for separating and analyzing volatile substances by taking gas as a mobile phase, has become one of extremely important separation and analysis methods, and is widely applied to the fields of medicine and health, petrochemical industry, environmental monitoring, biochemistry and the like. The pipe diameter of the air inlet pipe and the air outlet pipe of the existing gas chromatograph is small, the length of the air inlet pipe and the air outlet pipe is large, the blockage is easily caused, and the use is inconvenient.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a tube connecting assembly of a gas chromatograph, which can reduce the probability of trachea blockage.
According to an embodiment of the present invention, a tube connection assembly of a gas chromatograph includes: the first air pipe is connected with the gas chromatograph; the second air pipe is used for being connected with the air collecting bottle, and the pipe diameter of the second air pipe is larger than that of the first air pipe; the switching part is of a tubular structure, a first through hole and a second through hole are respectively formed in the two ends of the switching part, the first through hole is communicated with the second through hole, the end portion of the first air pipe penetrates through the first through hole and extends to the second through hole, the outer wall of the first air pipe is in sealing fit with the inner wall of the first through hole, the end portion of the second air pipe penetrates through the second through hole, and the outer wall of the second air pipe is in sealing fit with the inner wall of the second through hole.
The technical scheme at least has the following beneficial effects: connect the first trachea that the pipe diameter is little and the big second trachea of pipe diameter through the switching part, make first trachea intercommunication second trachea, and first trachea and the sealed cooperation of switching part, the sealed cooperation of second trachea and switching part, thereby can switch over gas chromatograph's tubule footpath trachea (be first trachea) to big pipe diameter trachea (be the second trachea), can shorten first tracheal length simultaneously, in order to reduce the probability that the trachea blockked up, convenient to use, and simple structure.
According to some embodiments of the present invention, a steel pipe is connected to an end of the first air pipe, the first air pipe is sleeved on the steel pipe, an inner wall of the first air pipe is in sealing fit with an outer wall of the steel pipe, and the first air pipe is combined with the steel pipe and penetrates through the first through hole.
According to some embodiments of the utility model, the first air pipe is provided as a rubber pipe, and the outer diameter of the steel pipe is larger than the inner diameter of the first air pipe.
According to some embodiments of the utility model, the length of the steel pipe is greater than the depth of the first through hole, and both ends of the steel pipe respectively penetrate through the ends of the first through hole.
According to some embodiments of the utility model, the adapter member is provided as a rubber member, and the diameter of the first through hole is smaller than the outer diameter of the first air pipe.
According to some embodiments of the utility model, the adapter part is provided with a guide portion at an end of the first through hole facing away from the second through hole.
According to some embodiments of the utility model, a tightening member is connected to the adapter member, the tightening member being disposed along a circumference of the first through hole and the tightening member being located outside the first through hole.
According to some embodiments of the utility model, the binding member is configured as a snap-band.
According to some embodiments of the utility model, the outer side wall of the adapter part is provided with a positioning ring, the gripping member being received in the positioning ring.
According to some embodiments of the utility model, the outer wall of the second air tube is adhered to the inner wall of the second through hole by a sealant.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional view of a pipe coupling assembly in an embodiment of the present invention;
fig. 2 is a cross-sectional view of an adapter component in an embodiment of the utility model.
Reference numerals:
a first gas pipe 100; a steel pipe 110;
a second air tube 200;
an adapter member 300; a first via 310; a guide portion 311; a second through-hole 320; a positioning ring 330; a cinch 340.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 2, an embodiment of the present invention provides a tube connection assembly of a gas chromatograph, including a first gas tube 100, a second gas tube 200, and an adapter 300, where the first gas tube 100 is connected to the gas chromatograph, the first gas tube 100 may be a gas inlet tube or a gas outlet tube of the gas chromatograph, the second gas tube 200 is used to connect with a gas collecting bottle, if the first gas tube 100 is the gas inlet tube, the gas collecting bottle is a sample bottle for sample introduction, and if the first gas tube 100 is the gas outlet tube, the gas collecting bottle is a waste gas bottle for collecting waste gas for further unified treatment, so as to avoid pollution of the environment by the waste gas; wherein, the pipe diameter of the second air pipe 200 is greater than the pipe diameter of the first air pipe 100, the first air pipe 100 and the second air pipe 200 are respectively connected to two ends of the adapter component 300, specifically, the adapter component 300 has a tubular structure, two ends of the adapter component 300 are respectively provided with a first through hole 310 and a second through hole 320, the first through hole 310 is communicated with the second through hole 320, generally speaking, the central axis of the first through hole 310 coincides with the central axis of the second through hole 320 for processing, the first through hole 310 is matched with the first air pipe 100, the second through hole 320 is matched with the second air pipe 200, that is, the inner diameter of the second through hole 320 is greater than the inner diameter of the first through hole 310, the end of the first air pipe 100 is inserted through the first through hole 310 and inserted into the second through hole 320 for air intake or exhaust, the outer wall of the first air pipe 100 is in sealing fit with the inner wall of the first through hole 310 to avoid air leakage, the end of the second air pipe 200 is inserted through the first through hole 310, and the outer wall of the second air pipe 200 is in sealing fit with the inner wall of the first through hole 310, so that gas leakage is avoided.
Through switching part 300 with gas chromatograph's little pipe diameter trachea (being first trachea 100) switching to big pipe diameter trachea (being second trachea 200), simultaneously, can shorten first trachea 100's length, the pipe diameter increases and to make gas flow smooth and easy to reduce the probability that the trachea blockked up, the user of being convenient for uses, and simple structure.
Referring to fig. 1, it can be understood that the end of the first gas pipe 100 is connected with a steel pipe 110, the steel pipe 110 can allow gas to pass through, the first gas pipe 100 is sleeved on the steel pipe 110, and the inner wall of the first gas pipe 100 is in sealing fit with the outer wall of the steel pipe 110, the first gas pipe 100 is combined with the steel pipe 110 and penetrates through the first through hole 310, because the first gas pipe 100 is generally a soft structure, such as a rubber pipe, during assembly, the first gas pipe 100 can be firstly sleeved on the steel pipe 110 to enhance the rigidity of the end of the first gas pipe 100, and then the steel pipe 110 and the first gas pipe 100 are simultaneously inserted into the first through hole 310, which is convenient to operate, and the first gas pipe 100 and the steel pipe 110 can be bonded and fixed by a sealant to improve the connection stability.
It can be understood that, first trachea 100 sets up to the rubber tube, the external diameter of steel pipe 110 is greater than the internal diameter of first trachea 100, first trachea 100 has the elasticity along its circumferential direction promptly, after steel pipe 110 is located to first trachea 100 cover, rely on the shrink effort of first trachea 100, make the inner wall of first trachea 100 hug closely in steel pipe 110, thereby improve the leakproofness between first trachea 100 and the steel pipe 110, avoid gas leakage, strengthen first trachea 100 and steel pipe 110's the steadiness of being connected simultaneously to a certain extent.
Referring to fig. 1 and 2, it can be understood that the length of the steel pipe 110 is greater than the depth of the first through hole 310, and both ends of the steel pipe 110 respectively penetrate through the ends of the first through hole 310, i.e., L > D, so that the steel pipe 110 is inserted into the first through hole 310 during assembly, and the first gas pipe 100 can be extended into the second through hole 320, which is convenient to operate.
It can be understood that the adaptor member 300 is configured as a rubber member, the diameter of the first through hole 310 is smaller than the outer diameter of the first gas pipe 100, that is, the adaptor member 300 has a certain amount of deformation, the diameter of the first through hole 310 is slightly smaller than the outer diameter of the first gas pipe 100, and in the assembly process, thanks to the deformability of the adaptor member 300, the first through hole 310 may be enlarged first, then the combination of the first gas pipe 100 and the steel pipe 110 is inserted into the first through hole 310, after the first gas pipe 100 is in place, the inner wall of the first through hole 310 is tightly attached to the outer wall of the first gas pipe 100 by the contraction pressure of the adaptor member 300, and the inner wall of the first gas pipe 100 is tightly attached to the outer wall of the steel pipe 110, thereby further improving the connection sealing performance of the first gas pipe 100 and the adaptor member 300. The first air tube 100 may also be adhered to the inner wall of the first through hole 310 by a sealant to further improve the sealing property and the connection stability.
Referring to fig. 1 and 2, it can be understood that the adapting member 300 is provided with a guiding portion 311, the guiding portion 311 is located at an end of the first through hole 310 facing away from the second through hole 320, and the guiding portion 311 may be a chamfer or a rounded corner, so as to facilitate inserting the combination of the first air pipe 100 and the steel pipe 110 into the first through hole 310, and facilitate assembly.
Referring to fig. 1, it can be understood that the adapter 300 is connected with the tightening member 340, the tightening member 340 is arranged along the circumference of the first through hole 310, and the tightening member 340 is located outside the first through hole 310, that is, the tightening member 340 is bound to the outside of the adapter 300 and located at the end where the first through hole 310 is located, so that the contraction pressure of the adapter 300 on the first air pipe 100 can be increased, the adapter 300 is tightly attached to the first air pipe 100, and the first air pipe 100 is tightly attached to the steel pipe 110, thereby further improving the connection tightness.
Referring to fig. 1, it can be appreciated that the tightening member 340 is configured as a slipknot cable tie, which is low in cost, convenient to lock, and easy to assemble.
Referring to fig. 1 and 2, it can be understood that the outer side wall of the adapter 300 is provided with a positioning ring 330, the tightening member 340 is accommodated in the positioning ring 330, and the positioning ring 330 is arranged along the circumference of the first through hole 310, so that the problem of failure caused by the fact that the tightening member 340 slides off the adapter 300 can be avoided, and the reliability is improved.
It can be understood that the outer wall of the second air tube 200 is adhered to the inner wall of the second through hole 320 by a sealant, so that the first air tube 100 is in sealing fit with the adapter component 300, the sealing performance is improved, gas leakage is avoided, and the connection is stable and reliable.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A tube connection assembly of a gas chromatograph, comprising:
the first air pipe is connected with the gas chromatograph;
the second air pipe is used for being connected with the air collecting bottle, and the pipe diameter of the second air pipe is larger than that of the first air pipe;
the switching part is of a tubular structure, a first through hole and a second through hole are respectively formed in the two ends of the switching part, the first through hole is communicated with the second through hole, the end portion of the first air pipe penetrates through the first through hole and extends into the second through hole, the outer wall of the first air pipe is in sealing fit with the inner wall of the first through hole, the end portion of the second air pipe penetrates through the second through hole, and the outer wall of the second air pipe is in sealing fit with the inner wall of the second through hole.
2. The tube connection assembly of a gas chromatograph of claim 1, wherein: the end part of the first air pipe is connected with a steel pipe, the first air pipe is sleeved on the steel pipe, the inner wall of the first air pipe is in sealing fit with the outer wall of the steel pipe, and the first air pipe and the steel pipe are combined and penetrate through the first through hole.
3. The tube connection assembly of a gas chromatograph of claim 2, wherein: the first air pipe is a rubber pipe, and the outer diameter of the steel pipe is larger than the inner diameter of the first air pipe.
4. The tube connection assembly of a gas chromatograph of claim 2, wherein: the length of the steel pipe is larger than the depth of the first through hole, and two ends of the steel pipe penetrate out of the end part of the first through hole respectively.
5. The tube connection assembly of a gas chromatograph of claim 2, wherein: the adapter part is set as a rubber part, and the diameter of the first through hole is smaller than the outer diameter of the first air pipe.
6. The tube connection assembly of a gas chromatograph of claim 5, wherein: the adapter part is provided with a guide part, and the guide part is located at one end, deviating from the second through hole, of the first through hole.
7. The tube connection assembly of a gas chromatograph of claim 5, wherein: the adapter part is connected with a clamping piece, the clamping piece is arranged along the circumferential direction of the first through hole, and the clamping piece is located on the outer side of the first through hole.
8. The tube connection assembly of a gas chromatograph of claim 7, wherein: the tightening piece is a slipknot ribbon.
9. The tube connecting assembly of a gas chromatograph according to claim 7 or 8, wherein: the outer side wall of the switching component is provided with a positioning ring, and the hooping piece is accommodated in the positioning ring.
10. The tube connection assembly of a gas chromatograph of claim 1, wherein: the outer wall of the second air pipe is bonded to the inner wall of the second through hole through a sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121709352.6U CN215862163U (en) | 2021-07-26 | 2021-07-26 | Pipe connecting assembly of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121709352.6U CN215862163U (en) | 2021-07-26 | 2021-07-26 | Pipe connecting assembly of gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215862163U true CN215862163U (en) | 2022-02-18 |
Family
ID=80331861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121709352.6U Active CN215862163U (en) | 2021-07-26 | 2021-07-26 | Pipe connecting assembly of gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215862163U (en) |
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2021
- 2021-07-26 CN CN202121709352.6U patent/CN215862163U/en active Active
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