CN218725775U - Phenolic compound sampling tube - Google Patents

Abstract

The utility model provides a phenolic compound sampling pipe, including pipe body, adsorption material unit, transition pipe, reagent package and two blanking caps. Wherein the tube body has an inlet end and a sharp outlet end; the adsorption material unit is arranged in the tube body; the first end of the transition pipe is sleeved outside the outlet end of the pipe body and is in sliding sealing fit with the pipe body, and the side wall of the transition pipe is provided with an air suction port communicating with the outlet end of the pipe body; the reagent pack is arranged at the second end of the transition pipe, and a diaphragm which can be punctured by the outlet end of the pipe body is arranged on one side of the reagent pack, which is adjacent to the transition pipe; the two blocking covers are respectively detachably covered on the inlet end and the air suction port of the pipe body. The utility model has the advantages of simple and reasonable structure, convenient to use, add methyl alcohol to this internal drip washing of pipe through setting up the reagent package, the addition of the control methyl alcohol of being convenient for, convenient operation also can avoid leaking when adding methyl alcohol simultaneously, and the operation is safer, can guarantee experimenter's health.

Description

Phenolic compound sampling tube

Technical Field

The utility model belongs to the technical field of the phenolic compound sampling, concretely relates to phenolic compound sampling pipe.

Background

In the determination experiment of the environmental air phenolic compound by adopting the national environmental standard method of high performance liquid chromatography for determining the environmental air phenolic compound (HJ 638-2012), the method has the principle that the gaseous phenolic compound collected by XAD-7 resin (ion exchange resin) is eluted by methanol, separated by high performance liquid chromatography and detected by an ultraviolet detector or a diode array detector. When sampling, a sampling tube is needed, XAD-7 adsorbent is added into the glass sampling tube in advance, the XAD-7 adsorbent is divided into two parts, the former part is filled with 100mg, the latter part is filled with 75mg, and glass wool is filled in the middle and the front and the rear ends. When the sampling tube is used, two ends of the sampling tube are used for taking down the sealed tetrafluoroethylene caps, one end (outlet end) of the sampling tube is connected with the air sampler, the inlet end of the sampling tube is kept vertically downward, the sampling flow of the air sampler is adjusted to be 0.2-0.5L/min, and the sampling time is determined according to actual conditions. And after sampling is finished, taking down the sampling tube, sealing two ends of the sampling tube by using tetrafluoroethylene caps, taking the sampling tube back to a laboratory, recovering to room temperature, slowly adding 5ml of methanol from an outlet end for leaching, naturally flowing leaching liquor from the other end, collecting the eluent by using a brown volumetric flask, and then detecting and analyzing by using a High Performance Liquid Chromatograph (HPLC).

After the sampling is accomplished among the prior art, when taking the sampling pipe back to the laboratory analysis, need slowly add 5ml methyl alcohol liquid to the sampling pipe, because the sampling pipe bore is thinner, the methyl alcohol eluant is very slow through gravity natural outflow speed, need slowly add many times through the pipette, waste time and energy, the easy external world of drippage when adding methyl alcohol moreover, difficult operation. Meanwhile, methanol has toxicity, so that the nervous system can be anesthetized and damaged, and the methanol dropping to the outside can also cause harm to the health of experimenters.

SUMMERY OF THE UTILITY MODEL

The utility model provides a phenolic compound sampling pipe aims at solving among the prior art because the sampling pipe bore is thinner, needs slowly to add many times through the pipette, and the easy drippage is external when adding methyl alcohol, difficult operation. Meanwhile, methanol has toxicity, so that the nervous system can be anesthetized and damaged, and methanol dropping to the outside can also cause harm to the health of experimenters.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a phenolic compound sampling tube comprising:

a tube body having an inlet end and a sharp outlet end;

an adsorbing material unit provided in the tube body;

the first end of the transition pipe is sleeved outside the outlet end of the pipe body and is in sliding sealing fit with the pipe body, and the side wall of the transition pipe is provided with an air suction port communicated with the outlet end of the pipe body;

a reagent pack disposed at the second end of the transition tube, one end of the reagent pack adjacent the transition tube having a septum pierceable by the outlet end of the tube body; and

and the two blocking covers are detachably covered on the inlet end of the pipe body and the air suction port respectively.

In a possible implementation manner, the adsorbing material unit comprises a first glass wool layer, a first ion exchange resin filling section, a second glass wool layer, a second ion exchange resin filling section and a third glass wool layer which are sequentially arranged along the gas flow direction.

In one possible implementation, the mass of the first ion exchange resin filled section is 90-110mg, and the mass of the second ion exchange resin filled section is 65-85mg.

In a possible implementation manner, a glass fiber filter membrane is further arranged on one side of the first glass wool layer adjacent to the inlet end of the pipe body.

In a possible implementation manner, the phenolic compound sampling tube further includes two fixing members respectively disposed at two ends of the adsorbing material unit, and the two fixing members respectively abut against the inner wall of the tube body to limit the adsorbing material unit from moving in the axial direction of the tube body.

In a possible implementation manner, the fixing member is a V-shaped steel wire, two ends of the V-shaped steel wire are respectively abutted to the inner wall of the pipe body, and a V-shaped tip of the V-shaped steel wire is abutted to the adsorbing material unit.

In a possible implementation manner, the phenolic compound sampling tube further comprises a limiting piece detachably arranged on the tube body; when the limiting piece is assembled on the pipe body, the limiting piece is abutted against the transition pipe, and the outlet end of the pipe body is away from the diaphragm by a preset safety distance.

In a possible implementation manner, a stepped ring groove is formed in the outer wall of the pipe body along the circumferential direction, the limiting part is a hoop arranged around the stepped ring groove, one shaft end of the hoop is abutted to the end face of the first end of the transition pipe, and the other shaft end of the hoop is abutted to the stepped face of the stepped ring groove.

In one possible implementation, the reagent pack is a flexible material member.

In one possible implementation, the volume of the reagent pack is 5ml.

In one possible implementation, the kit includes: a bag body having an accommodating cavity; and

and one end of the piston is arranged in the accommodating cavity along the axial direction of the tube body in a sliding manner, the outer peripheral surface of the piston is in sealing fit with the inner side wall of the reagent pack, and the other end of the piston extends out of the reagent pack to form a pushing part.

Compared with the prior art, the utility model provides a phenolic compound sampling pipe's beneficial effect is:

the utility model provides a phenolic compound sampling pipe includes pipe body, adsorption material unit, transition pipe, reagent package and blanking cover, and wherein the transition pipe is connected with the air sampler, makes the air get into from the entry end of pipe body, flows from the induction port, and adsorption material unit sets up at this internal in the pipe, can preserve the phenolic compound through the pipe body when sampling. After sampling is completed, the tube body and the air suction port are sealed through the two blocking covers, and sample pollution or dissipation is avoided. The reagent package is equipped with methanol liquid in, and when needs elution, the slip transition pipe makes the sharp-pointed exit end of pipe body puncture the diaphragm, makes methanol flow in to manage originally internally, and through the adsorption material unit, from the entry end outflow of pipe body, collects the outflow eluant and carries out phenolic compound detection and analysis.

The utility model has the advantages of simple and reasonable structure, convenient to use, add methyl alcohol to this internal drip washing of pipe through setting up the reagent package, the addition and the rate of adding of the control methyl alcohol of being convenient for, convenient operation also can avoid leaking when adding methyl alcohol simultaneously, and the operation is safer, can guarantee experimenter's health.

Drawings

FIG. 1 is an exploded view of a phenolic compound sampling tube according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a phenolic compound sampling tube according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the phenol compound sampling tube according to an embodiment of the present invention in an unaluted state;

FIG. 4 is an enlarged view of a portion A of FIG. 3;

FIG. 5 is a cross-sectional view of the interior of a phenolic compound sampling tube according to an embodiment of the present invention after elution;

fig. 6 is an internal cross-sectional view of the phenolic compound sampling tube according to the second embodiment of the present invention after elution.

Description of reference numerals:

1. a phenolic compound sampling tube;

10. a tube body;

20. an adsorption material unit; 21. a first glass wool layer; 22. a first ion exchange resin packed section; 23. a second glass wool layer; 24. a second ion exchange resin packed section; 25. a third glass wool layer; 26. a glass fiber filter membrane;

30. a transition duct; 31. an air suction port;

40. a reagent pack; 41. a diaphragm; 42. a piston; 421. a pushing part;

50. blocking the cover;

60. a V-shaped steel wire;

70. and (4) a hoop.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to," "secured to," or "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on," "disposed on" another element, it can be directly on the other element or intervening elements may also be present. "plurality" means two or more. "at least one" refers to one or more quantities. "a number" means one or more than one.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Referring to fig. 1 to 6 together, a phenolic compound sampling tube 1 according to an embodiment of the present invention will be described.

Referring to fig. 1 to 3, a sampling tube 1 for phenolic compounds according to an embodiment of the present invention includes a tube body 10, an adsorbing material unit 20, a transition tube 30, a reagent pack 40, and two caps 50. Wherein the tube body 10 has an inlet end and a sharp outlet end; the adsorbing material unit 20 is provided in the tube body 10; the transition pipe 30 has a first end and a second end, the first end is sleeved outside the outlet end of the pipe body 10 and is in sliding sealing fit with the pipe body 10, and the side wall of the transition pipe 30 is provided with an air suction port 31 communicating with the outlet end of the pipe body 10; the reagent pack 40 is arranged at the second end of the transition tube 30, and one end of the reagent pack 40 adjacent to the transition tube 30 is provided with a membrane 41 which can be punctured by the outlet end of the tube body 10; two closing caps 50 are detachably fitted to the inlet end of the pipe body 10 and the suction port 31, respectively.

Compared with the prior art, the embodiment of the utility model provides a phenolic compound sampling pipe 1's beneficial effect is:

the embodiment of the utility model provides a phenolic compound sampling pipe 1 includes pipe body 10, adsorbing material unit 20, transition pipe 30, reagent package 40 and blanking cover 50, and wherein transition pipe 30 is connected with the air sampler, makes the air get into from the entry end of pipe body 10, flows out from induction port 31, and adsorbing material unit 20 sets up in pipe body 10, can remain the phenolic compound through pipe body 10 when the sampling. After sampling is completed, the tube body 10 and the air suction port 31 are closed by the two caps 50, so that contamination or dissipation of the sample is avoided. The reagent pack 40 is filled with methanol liquid, when elution is needed, the sharp outlet end of the tube body 10 punctures the membrane 41 by sliding the transition tube 30, so that methanol flows into the tube body 10, passes through the adsorbing material unit 20 and flows out from the inlet end of the tube body 10, and the outflow eluent is collected for detecting and analyzing the phenolic compounds.

The utility model has the advantages of simple and reasonable structure, convenient to use adds methyl alcohol through setting up reagent package 40 to tub body 10 in and drip washing, the addition of the control methyl alcohol of being convenient for, convenient operation also can avoid leaking when adding methyl alcohol simultaneously, operates safelyr, can guarantee experimenter's health.

The embodiment of the utility model provides an in the body 10 specifically can be the glass pipe, and the hardness is high, punctures diaphragm 41 easily, guarantees that methyl alcohol flows out smoothly, still has good resistant pollution characteristic simultaneously. The exit end of pipe body 10 and transition pipe 30 sliding seal cooperation, the part that transition pipe 30 and pipe body 10 are connected can adopt rubber tube, plastic tubing etc. can enough move relative to pipe body 10 under the effect of external force, can keep sealed again, avoids gas or liquid to leak.

Or, the connection part of the transition pipe 30 and the pipe body 10 may also be a threaded pipe, the outlet end of the pipe body 10 has external threads, the inlet end of the transition pipe 30 is sleeved outside the pipe body 10 and is in threaded fit with the pipe body, and the transition pipe 30 is rotated to realize the screwing-in and screwing-out of the threads, so that the axial movement of the pipe body 10 and the transition pipe 30 is realized, and the pipe body 10 can puncture the diaphragm 41 when needed.

The embodiment of the present invention provides that the adsorbing material unit 20 can be XAD-7 adsorbent or activated carbon adsorbent, and it should have the adsorption holes with regular shape and uniform size, and has a certain adsorption and collection effect on the phenolic compounds in the air.

As shown in fig. 3 and 5, the embodiment of the present invention keeps the tube body 10 vertical when in use, the inlet end faces downward, the air inlet 31 is connected to the air sampler through the rubber hose for sampling (see fig. 3), after sampling, the inlet and outlet are sealed by two plugs 50, and the inlet and outlet are placed in the closed container and taken back to the laboratory. The reagent pack 40 is filled with a methanol reagent, the transition tube 30 is pushed to make the transition tube 30 puncture the membrane 41, methanol flows into the tube body 10 below, naturally flows out from the inlet end of the tube body 10 under the action of gravity (see fig. 5), and finally, the flowing-out eluent is collected and analyzed.

The embodiment of the utility model provides an in blanking cover 50 specifically can be the polytetrafluoroethylene material for the entry end or induction port 31 of the corresponding pipe body 10 of shutoff, the sample of avoiding the sampling to obtain is polluted or the loss.

Note that, in order to prevent methanol from flowing out of the inlet port 31 when the diaphragm 41 of the reagent pack 40 is pierced, the inlet port 31 may be closed in advance by the closing lid 50. Or, the outer diameter of the outlet end of the tube body 10 is designed to be matched with the inner diameter of the transition tube 30, so that when the transition tube 30 slides, the outer wall of the outlet end of the tube body 10 can close the air suction port 31. Alternatively, the diaphragm 41 may be a thin silicone pad that seals against leakage when the outlet end of the tube body 10 is punctured.

Referring to fig. 3 and 4, in some possible embodiments, the adsorbing material unit 20 includes a first glass wool layer 21, a first ion exchange resin filling section 22, a second glass wool layer 23, a second ion exchange resin filling section 24, and a third glass wool layer 25, which are sequentially arranged along the gas flow direction.

In this embodiment, the adsorbent material unit 20 comprises two sections of XAD-7 resin (ion exchange resin), wherein the two sections of XAD-7 resin are separated from each other and from each other by a layer of glass wool, and both the XAD-7 resin and the glass wool are commercially available products.

Referring to FIGS. 3 and 4, in some possible embodiments, the mass of the first packed ion exchange resin section 22 is 90-110mg and the mass of the second packed ion exchange resin section 24 is 65-85mg.

Specifically, in this embodiment, the mass of the first ion exchange resin packed section 22 may be 100mg and the length thereof may be about 2cm, and the mass of the second ion exchange resin packed section 24 may be 75mg and the length thereof may be about 1.5cm.

Referring to fig. 3 and 4, in some possible embodiments, a glass fiber filter 26 is further disposed on the first glass wool layer 21 adjacent to the inlet end of the pipe body 10. The glass fiber filter membrane 26 is capable of filtering aerosol and the like in the air, and the glass fiber filter membrane 26 is a commercially available product.

Referring to fig. 3 and 4, in some possible embodiments, the phenolic compound sampling tube 1 further includes two fixing members respectively disposed at two ends of the adsorbing material unit 20, and the two fixing members respectively abut against the inner wall of the tube body 10 to limit the movement of the adsorbing material unit 20 in the axial direction of the tube body 20.

The embodiment can limit the two ends of the adsorbing material by arranging the fixing piece, and prevent the adsorbing material from moving in the pipe body 10. It should be noted that, while the fixing member is limiting the adsorbing material unit 20, it should also ensure that air and methanol reagent can smoothly circulate.

Specifically, the fixing member may be a stopper fixed in the pipe body 10, and may be fixed by bonding, screwing, or the like, and the stopper is hollowed out to allow air and liquid to pass through.

Referring to fig. 3 and 4, in some possible embodiments, the fixing member is a V-shaped steel wire 60, two ends of the V-shaped steel wire 60 are respectively abutted against the inner wall of the pipe body 10, and a tip of the V-shaped steel wire 60 is abutted against the adsorbing material unit 20.

As shown in fig. 4, the glass fiber filter 26 and the third glass wool layer 25 are fixed by the V-shaped steel wire 60, and the tip of the V-shaped steel wire 60 abuts against the corresponding glass fiber filter 26 or the third glass wool layer 25, thereby preventing the adsorbing material unit 20 from moving in the tube main body 10.

Referring to fig. 1 and 2, in some possible embodiments, the phenolic compound sampling tube 1 further includes a stopper detachably disposed on the tube body 10; when the stopper is assembled to the tube body 10, the stopper abuts against the transition tube 30, and the outlet end of the tube body 10 is spaced from the diaphragm 41 by a predetermined safety distance.

The limiting piece is arranged in the embodiment, so that the moving distance of the transition pipe 30 to the pipe body 10 can be limited, and the phenomenon that the diaphragm 41 is punctured by the pipe body 10 to cause the leakage of the methanol reagent in the processes of product assembly, transportation, sale and the like is avoided.

Only when the retainer is removed can the transition tube 30 be moved to a position where it can pierce the septum 41. Specifically, the stopper may be a screw, a pin, a block, or the like fitted to the pipe body 10.

Referring to fig. 1 and 2, in some possible embodiments, a stepped ring groove is formed in an outer wall of the pipe body 10 along a circumferential direction, the limiting member is a hoop 70 wound around the stepped ring groove, one axial end of the hoop 70 abuts against an end surface of the first end of the transition pipe 30, and the other axial end abuts against a stepped surface of the stepped ring groove.

In this embodiment, the hoop 70 may be a manually removable part such as plastic or cardboard, when not in use, the hoop 70 is sleeved in the annular groove of the pipe body 10 to limit the movement of the transition pipe 30, and when methanol rinsing is required, the hoop 70 is manually removed to move the transition pipe 30 to a position where the membrane 41 can be punctured.

Referring to fig. 1 and 2, in some possible embodiments, the reagent pack 40 is a flexible material member, and the methanol liquid inside the reagent pack 40 can be smoothly discharged by pressing the reagent pack 40. Flexible materials such as synthetic resins, tetrafluoroethylene, and the like.

Referring to FIG. 6, as another possible embodiment, a reagent pack 40 includes a pack body and a piston 42. The bag body is provided with an accommodating cavity; one end of the piston 42 is slidably disposed in the accommodating cavity along the axial direction of the tube body 10, the outer peripheral surface of the piston 42 is in sealing contact with the inner side wall of the reagent pack 40, and the other end of the piston 42 extends out of the reagent pack 40 to form a pushing portion 421. Compared with natural dropping by gravity, the piston 42 can manually control the methanol elution speed to accelerate the methanol elution.

In this embodiment, the reagent pack 40 may be made of hard materials such as glass, and when the membrane 41 is punctured, the piston 42 may be pushed to extrude the methanol, which can prevent the reagent pack 40 from being damaged by pressure in the processes of production, transportation and sale compared with the reagent pack 40 made of flexible materials.

It should be noted that, the reagent pack 40 made of flexible material in the first embodiment shown in fig. 1 and fig. 2 and the reagent pack 40 with the piston 42 shown in fig. 6 have their usage scenarios and advantages, and the user can select them according to his needs.

In some possible embodiments, the volume of the reagent pack 40 is 5-8ml.

It is to be understood that, the above-mentioned embodiments may be freely combined or deleted to form different combination embodiments, and details of each combination embodiment are not repeated herein, and after this description, it can be considered that the present invention has described each combination embodiment and can support different combination embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A phenolic compound sampling tube, comprising:

a tube body having an inlet end and a sharp outlet end;

an adsorbing material unit provided in the tube body;

the first end of the transition pipe is sleeved outside the outlet end of the pipe body and is in sliding sealing fit with the pipe body, and the side wall of the transition pipe is provided with an air suction port communicated with the outlet end of the pipe body;

a reagent pack disposed at the second end of the transition tube, one end of the reagent pack adjacent the transition tube having a septum pierceable by the outlet end of the tube body; and

and the two blocking covers are detachably covered on the inlet end of the pipe body and the air suction port respectively.

2. The phenolic compound sampling tube of claim 1, wherein the adsorption material unit comprises a first glass wool layer, a first ion exchange resin filled section, a second glass wool layer, a second ion exchange resin filled section, and a third glass wool layer, which are sequentially arranged in a gas flow direction.

3. The phenolic compound sampling tube of claim 2, wherein the mass of the first ion exchange resin packed stage is 90-110mg and the mass of the second ion exchange resin packed stage is 65-85mg.

4. The phenolic compound sampling tube of claim 2, wherein a glass fiber filter membrane is further disposed on a side of the first glass wool layer adjacent to the inlet end of the tube body.

5. The phenolic compound sampling tube of claim 1, further comprising two fixing members respectively disposed at two ends of the adsorbing material unit, wherein the two fixing members respectively abut against an inner wall of the tube body to limit the adsorbing material unit from moving in the axial direction of the tube body.

6. The phenolic compound sampling tube of claim 5, wherein the fixing member is a V-shaped steel wire, two ends of the V-shaped steel wire are respectively abutted against the inner wall of the tube body, and a V-shaped tip of the V-shaped steel wire is abutted against the adsorbing material unit.

7. The phenolic compound sampling tube of claim 1, further comprising a stopper removably disposed on the tube body;

when the limiting piece is assembled on the pipe body, the limiting piece is abutted against the transition pipe, and the outlet end of the pipe body is away from the diaphragm by a preset safety distance.

8. The sampling tube for phenolic compounds according to claim 7, wherein the outer wall of the tube body is circumferentially provided with a stepped ring groove, the limiting member is a hoop wound around the stepped ring groove, one axial end of the hoop abuts against the end surface of the first end of the transition tube, and the other axial end abuts against the stepped surface of the stepped ring groove.

9. The phenolic compound sampling tube of claim 1, wherein the reagent pack is a flexible material member.

10. The phenolic compound sampling tube of claim 1, wherein the reagent pack comprises:

a bag body having an accommodating cavity; and

the piston, piston one end is followed the endwise slip of pipe body is located hold the intracavity, just the outer peripheral face of piston with the inside wall of reagent package is sealed to be laminated, the piston other end stretches out the reagent package forms promotion portion.

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