Gas sampling device for environment detection

Abstract

The utility model discloses a gas sampling device for environment detection, which comprises a sampling bottle, a bottle neck is arranged at the upper end of the sampling bottle, and a gas inlet pipe is arranged in the radial direction of the bottle neck; a lifting block is arranged in the bottle neck, the lifting block and the bottle neck are arranged in a sealed mode, and a threaded rod is arranged at the upper end of the lifting block. A nut block is fixedly arranged at the upper end of the bottle neck and connected with the threaded rod through threads, and the lifting block is driven by the threaded rod to ascend and descend in the bottle neck. The rotary knob is rotated to drive the threaded rod to move upwards, the threaded rod drives the lifting block to ascend to the position above the air inlet pipe, so that the air inlet pipe is communicated with the interior of the sampling bottle, and the interior of the sampling bottle is in a vacuum state, so that external environment gas enters the sampling bottle; then the knob is rotated to enable the lifting block to descend to seal the interior of the sampling bottle, and finally the sealing plug is inserted to complete gas sampling; the device is simple in structure and convenient to operate and carry.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental detection, in particular to a gas sampling device for environmental detection. Background Art

[0002] With the development of cities, the environment has become an important factor affecting our physical health. Urban construction, industrial development, etc. have more or less destroyed the environment around us, causing the air in people’s living environment to become worse and worse. Therefore, it is necessary to test the environmental air quality.

[0003] The existing collection devices are relatively bulky and have poor portability. If a sampling bag is used for gas collection, due to the low mechanical strength of the sampling bag, it needs special protection after sampling is completed, which is not convenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a gas sampling device for environmental detection to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a gas sampling device for environmental detection, comprising a sampling bottle, a bottleneck is provided at the upper end of the sampling bottle, and an air inlet pipe is provided in the radial direction of the bottleneck;

[0006] A lifting block is provided inside the bottleneck, and the lifting block and the bottleneck are sealed, and a threaded rod is provided at the upper end of the lifting block;

[0007] A nut block is fixedly provided at the upper end of the bottleneck, the nut block is connected to the threaded rod through threads, and the lifting block is driven to rise and fall inside the bottleneck by the threaded rod.

[0008] Preferably, a limit block is provided at the upper end of the threaded rod, and the limit block is located above the nut block, a fixing column is provided at the upper end of the limit block, and a knob is sleeved on the outer side of the fixing column.

[0009] Preferably, a sealing ring is provided on the outer diameter surface of the lifting block.

[0010] Preferably, a spring is sleeved on the outside of the threaded rod, and the spring is located inside the bottleneck.

[0011] Preferably, a sealing plug is provided in the air intake pipe, a rubber column is provided at one end of the sealing plug, the rubber column is inserted into the air intake pipe and is sealed with the air intake pipe, and a pull ring is provided at the other end of the sealing plug.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model drives the threaded rod to move upward by rotating the knob, and the threaded rod drives the lifting block to rise above the air inlet pipe, so that the air inlet pipe is connected with the inside of the sampling bottle. Since the interior of the sampling bottle is in a vacuum state, the external environmental gas will enter the interior of the sampling bottle. Then, the knob is rotated to make the lifting block descend to seal the interior of the sampling bottle, and finally the sealing plug is inserted to complete the gas sampling. The device has a simple structure, is easy to operate, and is also easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

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

[0016] In the figure: 1. Sampling bottle; 2. Bottle neck; 3. Air inlet pipe; 4. Lifting block; 5. Threaded rod; 6. Nut block; 7. Limit block; 8. Fixed column; 9. Knob; 10. Sealing ring; 11. Spring; 12. Sealing plug; 13. Rubber column; 14. Pull ring. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-2 The utility model provides a technical solution: a gas sampling device for environmental detection, comprising a sampling bottle 1, a bottleneck 2 is provided at the upper end of the sampling bottle 1, and an air inlet pipe 3 is provided in the radial direction of the bottleneck 2;

[0019] A sealing plug 12 is provided in the air intake pipe 3 , and a rubber column 13 is provided at one end of the sealing plug 12 . The rubber column 13 is inserted into the air intake pipe 3 and is sealed to the air intake pipe 3 . A pull ring 14 is provided at the other end of the sealing plug 12 .

[0020] Among them, the sampling bottle 1 is used for sampling and storing gas, the sealing plug 12 is used for sealing the bottleneck 2 to prevent external dust from entering the bottleneck 2 and causing pollution to the inside of the bottleneck 2. The pull ring 14 can facilitate the insertion and removal of the sealing plug 12.

[0021] A lifting block 4 is provided inside the bottleneck 2, and the lifting block 4 and the bottleneck 2 are sealed, and a sealing ring 10 is provided on the outer diameter surface of the lifting block 4;

[0022] The lifting block 4 rises or falls so that the air inlet pipe 3 is connected to or disconnected from the interior of the sampling bottle 1 .

[0023] A threaded rod 5 is provided at the upper end of the lifting block 4, a nut block 6 is fixed at the upper end of the bottleneck 2, the nut block 6 is connected to the threaded rod 5 through threads, and the lifting block 4 is driven to rise and fall inside the bottleneck 2 by the threaded rod 5.

[0024] A limit block 7 is provided at the upper end of the threaded rod 5 , and the limit block 7 is located above the nut block 6 . A fixing column 8 is provided at the upper end of the limit block 7 , and a knob 9 is sleeved on the outer side of the fixing column 8 .

[0025] A spring 11 is sleeved on the outside of the threaded rod 5 , and the spring 11 is located inside the bottleneck 2 .

[0026] Before use, the sampling bottle 1 needs to be vented so that the interior of the sampling bottle 1 is in a vacuum state. The operation steps are: open the sealing plug 12, rotate the knob 9 to drive the threaded rod 5 to rotate, the threaded rod 5 and the nut block 6 drive the threaded rod 5 to rise, the threaded rod 5 drives the lifting block 4 to rise above the air inlet pipe 3, so that the air inlet pipe 3 is connected with the bottle body of the sampling bottle 1, and then use the vacuum generator to suck air into the interior of the sampling bottle 1 through the air inlet pipe 3, so that the interior of the sampling bottle 1 is in a vacuum state, and then rotate the knob 9 again to make the lifting block 4 drop below the air inlet pipe 3, so that the air inlet pipe 3 is disconnected from the interior of the sampling bottle 1, so that the sampling bottle 1 is in a sealed state, and finally insert the sealing plug 12;

[0027] When sampling the gas, open the sealing plug 12, rotate the knob 9 to drive the lifting block 4 to rise, so that the air inlet pipe 3 is connected to the interior of the sampling bottle 1. Since the interior of the sampling bottle 1 is in a vacuum state, the external environmental gas will enter the interior of the sampling bottle 1, and then rotate the knob 9 to make the lifting block 4 descend to seal the interior of the sampling bottle 1, and finally insert the sealing plug 12 to complete the gas sampling.

[0028] The working principle and use process of this utility model:

[0029] Before use, the sampling bottle 1 needs to be vented so that the interior of the sampling bottle 1 is in a vacuum state. The operation steps are as follows: open the sealing plug 12, rotate the knob 9 to drive the threaded rod 5 to rotate, the threaded rod 5 and the nut block 6 drive the threaded rod 5 to rise, the threaded rod 5 drives the lifting block 4 to rise above the air inlet pipe 3, so that the air inlet pipe 3 is connected with the bottle body of the sampling bottle 1, and then use the vacuum generator to suck air into the interior of the sampling bottle 1 through the air inlet pipe 3, so that the interior of the sampling bottle 1 is in a vacuum state, and then rotate the knob 9 again to make the lifting block 4 drop below the air inlet pipe 3, so that the air inlet pipe 3 is disconnected from the interior of the sampling bottle 1, so that the sampling bottle 1 is in a sealed state, and finally insert the sealing plug 12; when sampling the gas, open the sealing plug 12, rotate the knob 9 to drive the lifting block 4 to rise, so that the air inlet pipe 3 is connected with the interior of the sampling bottle 1, because the interior of the sampling bottle 1 is in a vacuum state, the external environment gas will enter the interior of the sampling bottle 1, and then rotate the knob 9 to make the lifting block 4 drop to seal the interior of the sampling bottle 1, and finally insert the sealing plug 12 to complete the gas sampling.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas sampling device for environmental detection, comprising a sampling bottle (1), characterized in that: The upper end of the sampling bottle (1) is provided with a bottleneck (2), and the bottleneck (2) is provided with an air inlet pipe (3) in the radial direction; A lifting block (4) is provided inside the bottleneck (2), and the lifting block (4) and the bottleneck (2) are sealed, and a threaded rod (5) is provided at the upper end of the lifting block (4); A nut block (6) is fixedly provided at the upper end of the bottleneck (2); the nut block (6) is connected to the threaded rod (5) via threads; and the lifting block (4) is driven to rise and fall inside the bottleneck (2) via the threaded rod (5).

2. A gas sampling device for environmental detection according to claim 1, characterized in that: A limit block (7) is provided at the upper end of the threaded rod (5), and the limit block (7) is located above the nut block (6). A fixing column (8) is provided at the upper end of the limit block (7), and a knob (9) is sleeved on the outside of the fixing column (8).

3. A gas sampling device for environmental detection according to claim 1, characterized in that: A sealing ring (10) is provided on the outer diameter surface of the lifting block (4).

4. A gas sampling device for environmental detection according to claim 1, characterized in that: The threaded rod (5) is sleeved with a spring (11) on its exterior, and the spring (11) is located inside the bottleneck (2).

5. A gas sampling device for environmental detection according to claim 1, characterized in that: A sealing plug (12) is provided in the air intake pipe (3), a rubber column (13) is provided at one end of the sealing plug (12), the rubber column (13) is inserted into the air intake pipe (3) and is sealedly connected to the air intake pipe (3), and a pull ring (14) is provided at the other end of the sealing plug (12).

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