Gas sampling device

Abstract

The utility model relates to the field of gas sampling, and particularly discloses a gas sampling device which comprises a collecting cylinder, sample separating pipes are arranged on the outer side of the lower end of the collecting cylinder in an array mode, sample separating bags are installed on the outer sides of the sample separating pipes, switching mechanisms are connected between the sample separating bags and the sample separating pipes, sealing mechanisms are installed on the outer sides of the sample separating bags, and the switching mechanisms are connected with the sampling bags. The switching mechanism comprises a closed sleeve, an outer pressing strip and an inner sleeve, inner threads are arranged on the inner side wall of the closed sleeve, and a connecting thread is arranged on one side of the outer pressing strip. The end of the air inlet pipeline is inserted into the gap between the outer pressing strip and the inner sleeve, and after the whole closed sleeve is pushed towards the position of the outer pressing strip, meshing installation is conducted through the inner threads and the connecting threads on the inner side of the closed sleeve. And a plurality of samples can be sampled at one time under the condition that the sampling bag does not need to be disassembled by matching with a sealing mechanism arranged on the outer side of the sample separation bag.

Description

Technical Field

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

[0002] Environmental testing and management is an emerging industry with strong technical requirements. The media objects of environmental testing can be roughly divided into water quality testing, air testing, soil testing, solid waste testing, biological testing, noise and vibration testing, electromagnetic radiation detection, radioactivity detection, thermal detection, light detection, and sanitation. Usually, gas sampling bags are used for gas sampling devices in the environment. When the gas sampling bags are connected to the gas line, they are sealed with sealing caps.

[0003] However, since the current gas sampling bag can only sample one gas at a time, the bag needs to be disassembled and then a new bag needs to be installed after sampling, so the operation is relatively troublesome. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a gas sampling device to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a gas sampling device, comprising a collection tube, wherein a sample dividing tube is arranged in an array on the outer side of the lower end of the collection tube, a sample dividing bag is installed on the outer side of the sample dividing tube, a switching mechanism is connected between the sample dividing bag and the sample dividing tube, a sealing mechanism is installed on the outer side of the sample dividing bag, and the switching mechanism comprises: a sealing sleeve, an outer pressure strip, and an inner sleeve, an inner side wall of the sealing sleeve is provided with an inner tooth pattern, and a connecting thread is arranged on one side of the outer pressure strip.

[0006] As a further solution of the utility model: the closing mechanism includes: a lower pressing plate, an upper pressing plate, and a clamping pad. Buckle blocks are installed on one side end of the upper pressing plate and the lower pressing plate, and a buckle hole is opened at one end of the clamping pad located close to the buckle block.

[0007] As a further solution of the utility model: a piston push rod is installed inside the collecting tube, a sampling tube is installed at the lower end of the collecting tube, and a sealing sleeve is arranged on the outer side of the sampling tube.

[0008] As a further solution of the utility model: the closed sleeve is engaged and fixed with the connecting thread through the inner thread.

[0009] As a further solution of the utility model: the clamping pad is an L-shaped component, the lower pressing plate, the upper pressing plate and the clamping pad are all movably connected through a rotating shaft, and the buckle hole is clamped with the buckle block.

[0010] As a further solution of the utility model: the sampling tube and the collecting tube are connected, and the sealing sleeve is clamped with the sampling tube.

[0011] As a further solution of the utility model: the sample separation bag is clamped with the outer pressure strip and the inner sleeve.

[0012] As a further solution of the utility model: the switching mechanism is connected to the sample dividing tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Insert the end of the air inlet pipe into the gap between the outer pressure strip and the inner sleeve, push the closed sleeve as a whole toward the position of the outer pressure strip, and then use the inner teeth and connecting threads on the inside of the closed sleeve to engage and install it. In combination with the closing mechanism arranged on the outside of the sampling bag, multiple samples can be collected at one time without disassembling the sampling bag.

[0015] By rotating the lower pressure plate and the upper pressure plate as a whole to open them and placing them on the outside of the air intake pipe, the buckle holes at the end of the clamping pad are buckled onto the buckle blocks on the outside of the lower pressure plate and the upper pressure plate as a whole, ensuring that the remaining sample bags are in a closed state when the samples inside the collection tube are pushed, thereby reducing the occurrence of sample confusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a gas sampling device;

[0017] Figure 2 It is a structural schematic diagram of a transfer mechanism in a gas sampling device;

[0018] Figure 3 It is a structural schematic diagram of a sealing mechanism in a gas sampling device;

[0019] Figure 4 It is a partial enlarged view of a collection tube in a gas sampling device;

[0020] Figure 5 The present invention is a cross-sectional view of a collection tube in a gas sampling device.

[0021] In the figure: 1. Collection tube; 2. Piston push rod; 3. Sample tube; 4. Sample bag; 5. Adapter mechanism; 6. Closing mechanism; 7. Sampling tube; 8. Closing sleeve; 501. Closing sleeve; 502. Outer pressure strip; 503. Inner sleeve; 504. Connecting thread; 505. Inner tooth pattern; 601. Lower pressure plate; 602. Upper pressure plate; 603. Clamping pad; 604. Buckle block; 605. Buckle hole. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-5 As shown, this embodiment provides a gas sampling device, including a collecting tube 1, a sample dividing tube 3 is arranged in an array on the outer side of the lower end of the collecting tube 1, a sample dividing bag 4 is installed on the outer side of the sample dividing tube 3, a switching mechanism 5 is connected between the sample dividing bag 4 and the sample dividing tube 3, the switching mechanism 5 is arranged through the sample dividing tube 3, a closing mechanism 6 is installed on the outer side of the sample dividing bag 4, the switching mechanism 5 includes: a closing sleeve 501, an outer pressure strip 502, and an inner sleeve 503, the sample dividing bag 4 is clamped with the outer pressure strip 502 and the inner sleeve 503, an inner side wall of the closing sleeve 501 is provided with an inner tooth pattern 505, a connecting thread 504 is arranged on one side of the outer pressure strip 502, and the closing sleeve 501 is fixed by meshing with the connecting thread 504 through the inner tooth pattern 505.

[0024] like Figure 2-5 As shown, in this embodiment, the sealing mechanism 6 includes: a lower pressure plate 601, an upper pressure plate 602, and a clamping pad 603. The clamping pad 603 is an L-shaped component. A buckle block 604 is installed on one side end of the upper pressure plate 602 and the lower pressure plate 601. The clamping pad 603 is provided with a buckle hole 605 at one end close to the buckle block 604. The lower pressure plate 601, the upper pressure plate 602 and the clamping pad 603 are all movably connected through a rotating shaft. The buckle hole 605 is clamped with the buckle block 604. A piston push rod 2 is installed inside the collection tube 1. A sampling tube 7 is installed at the lower end of the collection tube 1. The sampling tube 7 is connected to the collection tube 1. A sealing sleeve 8 is arranged on the outside of the sampling tube 7, and the sealing sleeve 8 is clamped with the sampling tube 7.

[0025] The working principle of the utility model is as follows: when it is necessary to carry out the treatment, a corresponding number of sample bags 4 are arranged according to the number of sample tubes 3 arranged on the outside of the collection tube 1, and the air intake pipe at the end of the sample bag 4 is first passed through the closed sleeve 501 as a whole, and then the end of the air intake pipe is inserted into the gap between the outer pressure strip 502 and the inner sleeve 503, and the closed sleeve 501 is pushed toward the position of the outer pressure strip 502 as a whole, and the inner tooth pattern 505 and the connecting thread 504 on the inner side of the closed sleeve 501 are engaged and installed, and after the closed sleeve 501 is controlled to apply pressure to the outer pressure strip 502 to close the air intake pipe as a whole between the outer pressure strip 502 and the inner sleeve 503, the lower pressure plate 601 and the upper pressure plate 602 are rotated as a whole to open. After being placed on the outside of the air intake pipe, the lower pressure plate 601 and the upper pressure plate 602 are closed as a whole, and the clamping pad 603 above the upper pressure plate 602 is rotated as a whole, and the buckle hole 605 at the end of the clamping pad 603 is buckled as a whole on the buckle block 604 on the outside of the lower pressure plate 601 and the upper pressure plate 602. After closing the passage between the sample bag 4 and the collection tube 1, the piston push rod 2 is pushed outward as a whole inside the collection tube 1 to suck the gas to be detected into the inside of the collection tube 1, and the sealing sleeve 8 is completely closed on the outside of the sampling tube 7. After opening the sealing mechanism 6 on the outside of a sample bag 4, the gas inside the collection tube 1 is pushed into the inside of the sample bag 4 with the opened passage, so that rapid collection of various gases can be achieved.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] 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, comprising a collection tube (1), characterized in that: The outer side of the lower end of the collecting tube (1) is provided with a sample dividing tube (3) in an array, and the outer side of the sample dividing tube (3) is provided with a sample dividing bag (4), and a switching mechanism (5) is connected between the sample dividing bag (4) and the sample dividing tube (3). The outer side of the sample dividing bag (4) is provided with a sealing mechanism (6), and the switching mechanism (5) comprises: a sealing sleeve (501), an outer pressure strip (502), and an inner sleeve (503). The inner side wall of the sealing sleeve (501) is provided with an inner tooth pattern (505), and one side of the outer pressure strip (502) is provided with a connecting thread (504).

2. A gas sampling device according to claim 1, characterized in that: The closing mechanism (6) comprises: a lower pressing plate (601), an upper pressing plate (602), and a clamping pad (603); buckle blocks (604) are installed at one end of the upper pressing plate (602) and the lower pressing plate (601); and a buckle hole (605) is provided at one end of the clamping pad (603) close to the buckle block (604).

3. A gas sampling device according to claim 1, characterized in that: A piston push rod (2) is installed inside the collection tube (1), a sampling tube (7) is installed at the lower end of the collection tube (1), and a sealing sleeve (8) is arranged on the outside of the sampling tube (7).

4. A gas sampling device according to claim 1, characterized in that: The closed sleeve (501) is meshed and fixed with the connecting thread (504) via the inner thread (505).

5. A gas sampling device according to claim 2, characterized in that: The clamping pad (603) is an L-shaped component. The lower pressing plate (601), the upper pressing plate (602) and the clamping pad (603) are all movably connected via a rotating shaft, and the buckle hole (605) is clamped with the buckle block (604).

6. A gas sampling device according to claim 3, characterized in that: The sampling tube (7) is arranged to penetrate the collection tube (1), and the sealing sleeve (8) is clamped with the sampling tube (7).

7. A gas sampling device according to claim 1, characterized in that: The sample separation bag (4) is clamped with the outer pressure strip (502) and the inner sleeve (503).

8. A gas sampling device according to claim 1, characterized in that: The transfer mechanism (5) is arranged in communication with the sample dividing tube (3).

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