Air sampling tube for collecting chlorobenzene compounds

Abstract

The utility model discloses an air sampling tube for collecting chlorobenzene compounds, which comprises a first sampling tube and a second sampling tube, solid adsorbents are arranged in the first sampling tube and the second sampling tube, and sealing components are arranged on opposite sides of the first sampling tube and the second sampling tube. A connecting assembly is arranged outside the opposite sides of the first sampling pipe and the second sampling pipe and comprises a connecting piece and a fixing piece; by utilizing the design of the first sampling pipe, the second sampling pipe, the sealing assembly and the connecting assembly, the first sampling pipe and the second sampling pipe are connected by inserting an inserting block into an inserting groove of a second connecting ring, the sealing performance of the connecting position is ensured through a first sealing ring and a second sealing ring, and after air collection is completed, the clamping block is pressed, so that the clamping block is pressed, and the connecting assembly is connected with the first sampling pipe. The first sampling pipe and the second sampling pipe are separated, the solid adsorbent is partially exposed, the solid adsorbent is conveniently taken out, and meanwhile, the first sampling pipe and the second sampling pipe can be repeatedly used after being cleaned.

Description

Technical Field

[0001] The utility model relates to the field of food contact materials and environmental detection equipment, in particular to an air sampling tube for collecting volatile chlorobenzene compounds. Background Art

[0002] Chlorobenzene compounds are a class of monocyclic aromatic compounds with a strong odor and 1 to 6 chlorine substituents attached to the benzene ring, including chlorobenzene, dichlorobenzene, trichlorobenzene, tetrachlorobenzene, pentachlorobenzene, hexachlorobenzene and their isomers.

[0003] When sampling, a traditional sampling tube needs to place a solid adsorbent into the sampling tube. By injecting air into the sampling tube, chlorobenzene compounds can be adsorbed and sampled under the action of the solid adsorbent. After sampling, the sampling tube needs to be broken to take out the solid adsorbent for analysis. This method makes it inconvenient to take out the solid adsorbent and is not conducive to the reuse of the sampling tube. Utility Model Content

[0004] The utility model aims to provide an air sampling tube for collecting chlorobenzene compounds, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air sampling tube for collecting chlorobenzene compounds, comprising a first sampling tube and a second sampling tube, wherein the first sampling tube and the second sampling tube are provided with a solid adsorbent for gas adsorption collection inside, a sealing component for sealing the connection between the first sampling tube and the second sampling tube is provided on the opposite side of the first sampling tube and the second sampling tube, a connecting component for connecting the first sampling tube and the second sampling tube is provided on the outside of the opposite side of the first sampling tube and the second sampling tube, the connecting component comprises a connecting piece and a fixing piece, the fixing piece comprises a first connecting ring and a second connecting ring, and the connecting piece is provided at the bottom end of the first connecting ring.

[0006] Preferably, the top of the first sampling tube and the second sampling tube are respectively provided with a placement groove for placing the solid adsorbent, the bottom end of the solid adsorbent is provided with a breathable isolation plate for supporting the solid adsorbent, and the bottom end of the inner wall of the placement groove of the second sampling tube is fixedly connected with a shelf ring for supporting the breathable isolation plate.

[0007] Preferably, the outer wall of the top of the first sampling tube and the outer wall of the bottom of the second sampling tube are respectively sleeved with sealing caps for sealing the top of the first sampling tube and the bottom of the second sampling tube.

[0008] Preferably, the first connecting ring is sleeved on the outer wall at the bottom of the first sampling tube, the second connecting ring is sleeved on the outer wall at the top of the second sampling tube, the connecting piece includes an insert block, and a slot for inserting the insert block is provided at the top of the second connecting ring.

[0009] Preferably, a cavity is provided at the bottom of the plug block, a through hole is provided on one side of the inner wall of the cavity, a card block is sleeved inside the through hole, a locking hole is provided on one side of the inner wall of the slot, and the card block is connected through the locking hole.

[0010] Preferably, one end of the clamping block is fixedly connected to a baffle, and one side of the baffle is provided with an elastic block.

[0011] Preferably, the sealing assembly includes a first sealing ring and a second sealing ring, the bottom end of the first sampling tube is fixedly connected to the top end of the second sealing ring, the bottom end of the second sealing ring is fixedly connected to the second sealing ring, the top end of the second sampling tube is fixedly connected to the bottom end of the first sealing ring, the top end of the first sealing ring is fixedly connected to the first sealing ring, the bottom end of the first sampling tube is provided with a first ring groove for inserting the first sealing ring, and the top end of the second sampling tube is provided with a second ring groove for inserting the second sealing ring.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model utilizes the design of the first sampling tube, the second sampling tube, the sealing component and the connecting component. The first sampling tube and the second sampling tube can be connected by inserting the plug block into the slot of the second connecting ring. The sealing of the connection between the first sampling tube and the second sampling tube is ensured by the first sealing ring and the second sealing ring. Therefore, when the air collection is completed, the first sampling tube and the second sampling tube can be separated by pressing the card block, and the solid adsorbent is partially exposed, so that the solid adsorbent is convenient to take out. At the same time, the first sampling tube and the second sampling tube can be cleaned and reused multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0015] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model.

[0016] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure.

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the connecting piece of the utility model.

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the first connecting ring of the utility model.

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the second connecting ring of the utility model.

[0020] In the figure: 1. first sampling tube; 2. second sampling tube; 3. solid adsorbent; 4. breathable isolation plate; 5. sealing cap; 6. first sealing ring; 7. first sealing ring; 8. second sealing ring; 9. second sealing ring; 10. first connecting ring; 11. second connecting ring; 12. plug-in block; 13. clamping block; 14. baffle; 15. elastic block; 16. shelf ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figure 1-6 The air sampling tube for collecting chlorobenzene compounds shown in the figure includes a first sampling tube 1 and a second sampling tube 2. The first sampling tube 1 and the second sampling tube 2 are provided with a solid adsorbent 3 for gas adsorption collection inside. The first sampling tube 1 and the second sampling tube 2 are provided with a sealing component for sealing the connection between the first sampling tube 1 and the second sampling tube 2 on the opposite side. The first sampling tube 1 and the second sampling tube 2 are provided with a connecting component for connecting the first sampling tube 1 and the second sampling tube 2 on the outside of the opposite side. The connecting component includes a connecting piece and a fixing piece. The fixing piece includes a first connecting ring 10 and a second connecting ring 11. The connecting piece is arranged at the bottom end of the first connecting ring 10.

[0023] Specifically, the top of the first sampling tube 1 and the second sampling tube 2 are respectively provided with a placement groove for placing the solid adsorbent 3, the bottom end of the solid adsorbent 3 is provided with a breathable isolation plate 4 for supporting the solid adsorbent 3, the bottom end of the inner wall of the placement groove of the second sampling tube 2 is fixedly connected with a support ring 16 for supporting the breathable isolation plate 4, and the outer wall of the top of the first sampling tube 1 and the outer wall of the bottom of the second sampling tube 2 are respectively provided with sealing caps 5 for sealing the top of the first sampling tube 1 and the bottom of the second sampling tube 2.

[0024] Furthermore, the solid adsorbent 3 is made of a mixture of activated carbon and ion exchange resin XAD-2 in a weight ratio of 1:1 (or the activated carbon is impregnated with a 10g / L sodium hydroxide solution in the first connecting ring), which can effectively adsorb a variety of vapor or volatile chlorobenzene compounds. The air-permeable isolation plate 4 is a circular air-permeable plate made of a plastic plate material. The shelf ring 16 is annular, and the inner diameter of the shelf ring 16 is 0.8 times the outer diameter of the air-permeable isolation plate 4. The outer wall of the shelf ring 16 is fixedly connected to the inner wall of the bottom of the second sampling tube 2 placement groove by gluing. The diameter of the air-permeable isolation plate 4 is Corresponding to the diameter of the solid adsorbent 3, by placing the solid adsorbent 3 on the top of the breathable isolation plate 4, the middle position of the solid adsorbent 3 is flush with the top of the second sampling tube 2, the first sampling tube 1 and the second sampling tube 2 are of equal length and size, and the first sampling tube 1 and the second sampling tube 2 are both made of plastic. When collecting gas, the sealing caps 5 at the ends of the first sampling tube 1 and the second sampling tube 2 are removed respectively, and the gas enters through the first sampling tube 1, and the chlorobenzene compounds in the gas are adsorbed by the solid adsorbent 3, and finally the gas flows out from the second sampling tube 2.

[0025] Specifically, the first connecting ring 10 is sleeved on the outer wall of the bottom of the first sampling tube 1, and the second connecting ring 11 is sleeved on the outer wall of the top of the second sampling tube 2. The connecting piece includes an insert block 12. The top of the second connecting ring 11 is provided with a slot for inserting the insert block 12. The bottom of the insert block 12 is provided with a cavity. One side of the inner wall of the cavity is provided with an insert hole. The inside of the insert hole is sleeved with a card block 13. One side of the inner wall of the slot is provided with a locking hole. The card block 13 is inserted and connected with the locking hole. One end of the card block 13 is fixedly connected with a baffle 14, and one side of the baffle 14 is provided with an elastic block 15.

[0026] Furthermore, the inner wall of the first connecting ring 10 is fixedly connected to the outer wall of the bottom of the first sampling tube 1 by gluing, the inner wall of the second connecting ring 11 is fixedly connected to the outer wall of the top of the second sampling tube 2 by gluing, at least three connecting pieces are arranged at the bottom of the first connecting ring 10, and the three connecting pieces are arranged in a ring with equal spacing, the top of the plug block 12 is fixedly connected to the bottom of the first connecting ring 10 by gluing, the size of the insertion hole is the same as the size of the locking hole, both are 1.02 times the vertical cross-sectional size of the card block 13, the size of the baffle 14 is 1.2 times the size of the insertion hole, the elastic block 15 is made of elastic rubber, the elastic block 15 is in a compressed state in the cavity, and the number and size of the slots are the same as the insertion hole. Corresponding to the block 12, by inserting the plug block 12 into the slot, the card block 13 is pushed into the locking hole under the action of the restoring force of the elastic block 15, so as to realize the connection between the first connecting ring 10 and the second connecting ring 11, thereby completing the composition of the first sampling tube 1 and the second sampling tube 2. When disassembly is required, the card block 13 is pressed toward the plug block 12 to move the card block 13 out of the locking hole, and the first sampling tube 1 can be pulled away from the second sampling tube 2. The first sampling tube 1 drives the first connecting ring 10 to make the plug block 12 detach from the slot, thereby completing the separation of the first sampling tube 1 and the second sampling tube 2, and taking out the exposed solid adsorbent 3.

[0027] Specifically, the sealing assembly includes a first sealing ring 6 and a second sealing ring 8. The bottom end of the first sampling tube 1 is fixedly connected to the top end of the second sealing ring 8, and the bottom end of the second sealing ring 8 is fixedly connected to the second sealing ring 9. The top end of the second sampling tube 2 is fixedly connected to the bottom end of the first sealing ring 6, and the top end of the first sealing ring 6 is fixedly connected to the first sealing ring 7. The bottom end of the first sampling tube 1 is provided with a first ring groove for inserting the first sealing ring 6, and the top end of the second sampling tube 2 is provided with a second ring groove for inserting the second sealing ring 8.

[0028] Furthermore, the first sealing ring 6 and the second sealing ring 8 are arranged alternately, the bottom end of the first sealing ring 6 is fixedly connected to the top end of the second sampling tube 2 by gluing, the top end of the second sealing ring 8 is fixedly connected to the bottom end of the first sampling tube 1 by gluing, the bottom end of the first sealing ring 7 is fixedly glued to the top end of the first sealing ring 6, the top end of the second sealing ring 9 is fixedly glued to the bottom end of the second sealing ring 8, the sizes of the first sealing ring 7 and the second sealing ring 9 correspond to the first sealing ring 6 and the second sealing ring 8 respectively, the sizes of the first ring groove and the second ring groove are 1.01 times the sizes of the first sealing ring 6 and the second sealing ring 8 respectively, so that the gaps between the first ring groove and the first sealing ring 6 and the gaps between the second ring groove and the second sealing ring 8 are filled by extruding and deforming the first sealing ring 7 and the second sealing ring 9 respectively, thereby ensuring the sealing at the connection between the first sampling tube 1 and the second sampling tube 2.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air sampling tube for collecting chlorobenzene compounds, comprising a first sampling tube (1) and a second sampling tube (2), wherein a solid adsorbent (3) for gas adsorption collection is arranged inside the first sampling tube (1) and the second sampling tube (2), characterized in that: A sealing assembly for sealing the connection between the first sampling tube (1) and the second sampling tube (2) is arranged on one side opposite to the first sampling tube (1) and the second sampling tube (2); a connecting assembly for connecting the first sampling tube (1) and the second sampling tube (2) is arranged on the outside of the side opposite to the first sampling tube (1) and the second sampling tube (2); the connecting assembly comprises a connecting member and a fixing member; the fixing member comprises a first connecting ring (10) and a second connecting ring (11); the connecting member is arranged at the bottom end of the first connecting ring (10).

2. The air sampling tube for collecting chlorobenzene compounds according to claim 1, characterized in that: The top ends of the first sampling tube (1) and the second sampling tube (2) are respectively provided with placement grooves for placing the solid adsorbent (3); the bottom ends of the solid adsorbent (3) are provided with a breathable isolation plate (4) for supporting the solid adsorbent (3); and the bottom ends of the inner walls of the placement grooves of the second sampling tube (2) are fixedly connected with a support ring (16) for supporting the breathable isolation plate (4).

3. The air sampling tube for collecting chlorobenzene compounds according to claim 1, characterized in that: The outer wall of the top of the first sampling tube (1) and the outer wall of the bottom of the second sampling tube (2) are respectively sleeved with sealing caps (5) for sealing the top of the first sampling tube (1) and the bottom of the second sampling tube (2).

4. The air sampling tube for collecting chlorobenzene compounds according to claim 1, characterized in that: The first connecting ring (10) is sleeved on the outer wall of the bottom of the first sampling tube (1), the second connecting ring (11) is sleeved on the outer wall of the top of the second sampling tube (2), the connecting piece comprises an insert block (12), and a slot for inserting the insert block (12) is provided at the top of the second connecting ring (11).

5. The air sampling tube for collecting chlorobenzene compounds according to claim 4, characterized in that: A cavity is provided at the bottom of the insert block (12), a through hole is provided on one side of the inner wall of the cavity, a clamping block (13) is sleeved inside the through hole, a locking hole is provided on one side of the inner wall of the slot, and the clamping block (13) is connected to the locking hole through insertion.

6. The air sampling tube for collecting chlorobenzene compounds according to claim 5, characterized in that: One end of the clamping block (13) is fixedly connected to a baffle (14), and one side of the baffle (14) is provided with an elastic block (15).

7. The air sampling tube for collecting chlorobenzene compounds according to claim 1, characterized in that: The sealing assembly comprises a first sealing ring (6) and a second sealing ring (8); the bottom end of the first sampling tube (1) is fixedly connected to the top end of the second sealing ring (8); the bottom end of the second sealing ring (8) is fixedly connected to a second sealing ring (9); the top end of the second sampling tube (2) is fixedly connected to the bottom end of the first sealing ring (6); the top end of the first sealing ring (6) is fixedly connected to a first sealing ring (7); the bottom end of the first sampling tube (1) is provided with a first ring groove for inserting the first sealing ring (6); the top end of the second sampling tube (2) is provided with a second ring groove for inserting the second sealing ring (8).

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