Malodorous gas sampling device

Abstract

The utility model relates to the technical field of gas sampling, and discloses a foul gas sampling device. Comprising a connecting pipe communicated with one end of the gas conveying pipe, one end of the connecting pipe is communicated with a fixed pipe, the inner wall of the fixed pipe is communicated with a mounting pipe, and the inner wall of the mounting pipe is communicated with the sampling cylinder. The gas conveying pipe can be conveniently detached by arranging the detaching assembly, the clamping piece and the reset piece, after the gas conveying pipe is used for a long time, dirt and residues inside the gas conveying pipe affect the sampling accuracy, possibly cause blockage and affect normal circulation of gas, and the detachable gas conveying pipe can be easily taken down from the device for comprehensive and deep cleaning, for example, the gas conveying pipe can be conveniently detached from the device. And professional cleaning agents and tools are used for washing and wiping the interior of the air delivery pipe, so that the interior is clean and smooth, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of gas sampling technology, specifically to a malodorous gas sampling device. Background Technology

[0002] Industrial odorous gases are byproducts of chemical, coating, and pharmaceutical production processes. They contain highly odorous substances such as thiols, phenols, and aldehydes, which are released during raw material reactions, product distillation, and wastewater treatment. They are characterized by rapid diffusion and low odor threshold, which can easily lead to disputes among factories and are a key focus of environmental protection inspections.

[0003] Odorous gases have complex compositions and may contain various substances such as hydrogen sulfide, ammonia, and volatile organic compounds. Therefore, it is necessary to collect gas samples through sampling devices and then use professional analytical instruments to accurately determine the types and concentrations of various components. However, traditional sampling devices are usually not convenient to disassemble the gas supply tubes. Before each sampling task begins, a comprehensive inspection and preparation of the sampling device is required. If the gas supply tubes are not easy to disassemble, a lot of time will be wasted on disassembly and installation when it is necessary to replace the gas supply tubes of different lengths, materials, or specifications to adapt to different sampling scenarios. Utility Model Content

[0004] The purpose of this invention is to provide an odor gas sampling device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an odorous gas sampling device, comprising a sampling cylinder, and further comprising:

[0006] A cap is installed at one end of the sampling tube, and a gas delivery pipe is provided on one side of the cap;

[0007] A disassembly assembly is located at one end of the gas supply pipe. The disassembly assembly includes a connecting pipe connected to one end of the gas supply pipe, a fixing pipe connected to one end of the connecting pipe, and an installation pipe connected to the inner wall of the fixing pipe.

[0008] A snap-fit ​​component is provided on the outside of the mounting tube, and a reset component for resetting the snap-fit ​​component is provided on the outside of the fixing tube.

[0009] Preferably, the snap-fit ​​component includes a sleeve fixed to the inner wall of the mounting tube, a limit spring fixedly connected to the inner wall of the sleeve, and a slide tube fixedly connected to one end of the limit spring.

[0010] Preferably, the reset component includes a sleeve rod fixed to the inner wall of the fixed tube, a slide rod slidably connected to the inner wall of the sleeve rod, and a movable plate for squeezing the slide tube is fixedly connected to one end of the slide rod.

[0011] Preferably, the inner wall of the cylinder cover is connected to a positioning tube, and one end of the positioning tube is connected to one end of the mounting tube. The inner wall of the cylinder cover is equipped with a first sealing ring for improving the sealing performance of the positioning tube.

[0012] Preferably, the inner wall of the cylinder cover is connected to an extraction pipe for conveying gas inside the sampling cylinder, and a second sealing ring is installed on the inner wall of the cylinder cover to improve the sealing performance of the extraction pipe.

[0013] Preferably, a first regulating valve is provided on the outer side of the extraction pipe, and a second regulating valve for regulating the gas flow rate is provided at one end of the mounting pipe.

[0014] Preferably, a sealing gasket is fixedly connected to one side of the cylinder cover, and an installation groove for installing the sealing gasket is provided on the inner wall of the sampling cylinder.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention facilitates the disassembly of the gas delivery tube by incorporating a disassembly component, a snap-fit ​​component, and a reset component. After prolonged use, internal dirt and residue in the gas delivery tube not only affect sampling accuracy but may also cause blockages, hindering normal gas flow. The detachable gas delivery tube can be easily removed from the device for thorough cleaning. For example, professional cleaning agents and tools can be used to rinse and wipe the inside of the gas delivery tube to ensure it is clean and unobstructed, thus extending the device's lifespan. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the odor gas sampling device provided by this utility model;

[0018] Figure 2 A schematic diagram of the sampling tube and extraction tube provided by this utility model;

[0019] Figure 3 A schematic diagram of the gas transmission pipe and installation pipe provided by this utility model;

[0020] Figure 4 A schematic diagram of the sampling cylinder and sealing gasket provided by this utility model;

[0021] Figure 5 for Figure 3 An enlarged schematic diagram of point A shown.

[0022] In the diagram: 1. Sampling cylinder; 2. Cylinder cover; 3. Gas delivery pipe; 4. Disassembly assembly; 41. Connecting pipe; 42. Fixing pipe; 43. Mounting pipe; 5. Snap-fit ​​component; 51. Sleeve; 52. Limiting spring; 53. Sliding tube; 6. Reset component; 61. Sleeve rod; 62. Sliding rod; 63. Moving plate; 7. Positioning tube; 8. First sealing ring; 9. Suction pipe; 10. Second sealing ring; 11. First regulating valve; 12. Second regulating valve; 13. Sealing gasket; 14. Mounting groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 As shown, an odorous gas sampling device includes a sampling cylinder 1, a cylinder cover 2 installed at one end of the sampling cylinder 1, and a gas delivery pipe 3 provided on one side of the cylinder cover 2. The sampling cylinder 1 serves as the core container for storing the collected odorous gas sample. The cylinder cover 2 is designed to seal the sampling cylinder 1 to prevent odorous gas leakage, and at the same time provides a mounting base for the gas delivery pipe 3 and the extraction pipe 9. The gas delivery pipe 3 is designed to introduce external gas into the sampling cylinder 1, and the gas delivery pipe 3 can be connected to a sampling gun. It should be noted that the sampling gun is existing technology.

[0025] The disassembly assembly 4 is located at one end of the gas supply pipe 3. The disassembly assembly 4 includes a connecting pipe 41 connected to one end of the gas supply pipe 3. One end of the connecting pipe 41 is connected to a fixing pipe 42. The inner wall of the fixing pipe 42 is connected to an installation pipe 43. The connecting pipe 41 is used to connect the gas supply pipe 3 and the fixing pipe 42 to realize the connection of the gas passage. The fixing pipe 42 is used to connect the installation pipe 43 and cooperates with the snap-fit ​​part 5 and the reset part 6 to realize quick disassembly and installation. The installation pipe 43 is used to install the snap-fit ​​part 5 and is also one of the channels for gas transmission, ensuring that the gas can flow smoothly from the gas supply pipe 3 to the positioning pipe 7.

[0026] The snap-fit ​​component 5 is located on the outside of the mounting tube 43, and the outside of the fixing tube 42 is provided with a reset component 6 for resetting the snap-fit ​​component 5. The snap-fit ​​component 5 includes a sleeve 51 fixed to the inner wall of the mounting tube 43, a limit spring 52 fixedly connected to the inner wall of the sleeve 51, and a slide tube 53 fixedly connected to one end of the limit spring 52. The reset component 6 includes a sleeve rod 61 fixed to the inner wall of the fixing tube 42, a slide rod 62 slidably connected to the inner wall of the sleeve rod 61, and a moving plate 63 for pressing the slide tube 53 fixedly connected to one end of the slide rod 62. Since the sleeve 51 is fixed to the inner wall of the mounting tube 43, it provides installation space for the limit spring 52 and the slide tube 53, while limiting... The range of motion of the slide tube 53 is limited to moving only in a certain direction within the sleeve 51. Since one end of the limiting spring 52 is fixed to the inner wall of the sleeve 51 and the other end is connected to the slide tube 53, when the slide tube 53 is subjected to external force, the limiting spring 52 will undergo elastic deformation and store energy. When the external force disappears, the limiting spring 52 will reset the slide tube 53 through elastic force, playing a role in buffering and resetting. Through the design of the slide tube 53, it can slide within the sleeve 51 under the action of the limiting spring 52. When it is squeezed by the moving plate 63, the slide tube 53 will move, thereby realizing the function of locking or releasing, so as to control the gas transmission path or realize the detachable function of the component.

[0027] It should be noted that the inner walls of both the fixed pipe 42 and the installation pipe 43 are provided with a sealing layer to improve the sealing of the connection between the two pipes. This layer is made of polytetrafluoroethylene and is existing technology. Since the sleeve rod 61 is fixed to the inner wall of the fixed pipe 42, it provides a sliding track for the slide rod 62, allowing it to move only in the axial direction of the sleeve rod 61. This ensures the stability and accuracy of the slide rod 62's movement. The slide rod 62 slides inside the sleeve rod 61, and one end is connected to the moving plate 63. Then, it can be pushed or pulled by external force to make the moving plate 63 squeeze the slide tube 53. When the moving plate 63 moves, it will drive the slide rod 62 to move together, thereby realizing the squeezing or releasing operation of the slide tube 53. It should be noted that the inner wall of the sleeve rod 61 is fixedly connected with a spring for resetting the slide rod 62. Thus, when the moving plate 63 resets the slide tube 53 by external force, it can be reset by the elastic potential energy of the spring itself.

[0028] The inner wall of the cylinder cover 2 is connected to a positioning tube 7, and one end of the positioning tube 7 is connected to one end of the installation tube 43. A first sealing ring 8 is installed on the inner wall of the cylinder cover 2 to improve the sealing performance of the positioning tube 7. Since one end of the positioning tube 7 is connected to the installation tube 43, it is used to accurately guide the gas delivered by the gas delivery tube 3 into the sampling cylinder 1 or guide the gas out of the sampling cylinder 1, playing the role of positioning and guiding the gas flow path, ensuring that the gas can be transmitted according to the designed route. The first sealing ring 8 is installed at the mating point between the inner wall of the cylinder cover 2 and the positioning tube 7 to improve the sealing performance between the positioning tube 7 and the cylinder cover 2, prevent gas leakage, ensure the accuracy and integrity of the collected gas samples, and prevent outside air from mixing in or gas from escaping from the sampling cylinder 1.

[0029] The inner wall of the cap 2 is connected to an extraction pipe 9 for conveying gas inside the sampling cylinder 1. A second sealing ring 10 is installed on the inner wall of the cap 2 to improve the sealing performance of the extraction pipe 9. The extraction pipe 9 is designed to convey the gas inside the sampling cylinder 1 for sampling or detection operations. It is worth noting that the extraction pipe 9 can be connected to an external air pump to create negative pressure inside the sampling cylinder 1. The second sealing ring 10 is installed at the mating point between the inner wall of the cap 2 and the extraction pipe 9. Its function is to improve the sealing performance between the extraction pipe 9 and the cap 2, prevent gas leakage during the transportation process, and ensure the accuracy and reliability of the sampling.

[0030] A first regulating valve 11 is installed on the outside of the extraction pipe 9, and a second regulating valve 12 for regulating the gas flow rate is installed at one end of the mounting pipe 43. Since the first regulating valve 11 is installed on the outside of the extraction pipe 9, it is used to regulate the flow rate and volume of the gas in the extraction pipe 9. According to the actual sampling requirements, it controls the speed and mass of the gas extracted from the sampling tube 1 in order to obtain accurate sampling results. At the same time, since the second regulating valve 12 is located at one end of the mounting pipe 43, it is used to regulate the gas flow rate through the mounting pipe 43. In conjunction with the first regulating valve 11, it can precisely control the flow rate and volume of the gas in the entire sampling device, ensuring the stability and accuracy of the sampling process.

[0031] A sealing gasket 13 is fixedly connected to one side of the cap 2, and an installation groove 14 for installing the sealing gasket 13 is provided on the inner wall of the sampling tube 1. Since the sealing gasket 13 is fixed to one side of the cap 2, when the cap 2 is installed on the sampling tube 1, the sealing gasket 13 cooperates with the installation groove 14 on the inner wall of the sampling tube 1 to play a sealing role, preventing gas in the sampling tube 1 from leaking from the connection between the cap 2 and the sampling tube 1, and ensuring the sealing performance of the sampling device. The design of the installation groove 14 is used to install the sealing gasket 13, providing an installation position for the sealing gasket 13, so that the sealing gasket 13 can accurately cooperate with the cap 2 to achieve a good sealing effect.

[0032] Working principle: First, connect the suction pipe 9 to the external suction pump. After starting the suction pump, the gas is drawn out from the suction pipe 9, creating a negative pressure inside the sampling cylinder 1. Then, close the first regulating valve 11. Next, connect the gas delivery pipe 3 to the external sampling gun. The gas flows in from the gas delivery pipe 3. The second regulating valve 12 at one end of the installation pipe 43 can regulate the flow rate of the incoming gas to ensure stable gas entry. The gas passes through the fixed pipe 42, the connecting pipe 41, and the gas delivery pipe 3, and then enters the sampling cylinder 1 through the positioning pipe 7 on the inner wall of the cylinder cover 2. The first sealing ring 8 at the positioning pipe 7 prevents gas leakage at this point, ensuring that all gas can enter the sampling cylinder 1. After entering, close the second regulating valve 12 to sample the gas.

[0033] When it is necessary to disassemble the gas supply pipe 3, operate the reset component 6 to push the slide rod 62 and the moving plate 63, so that they slide within the sleeve rod 61. The moving plate 63 squeezes the slide tube 53, and the slide tube 53 overcomes the elastic force of the limit spring 52 and retracts into the sleeve 51. The sleeve 51 is fixed to the inner wall of the installation tube 43. After the slide tube 53 retracts, the original locking effect achieved by the slide tube 53 disappears, so that the connection between the installation tube 43 and the fixed tube 42 is loosened. Then, the connecting tube 41, the fixed tube 42, and the installation tube 43 at one end of the gas supply pipe 3 can be disassembled from the position connected to other equipment. When the disassembly is completed, release the slide rod 62 and the moving plate 63. The spring fixedly connected inside the sleeve rod 61 will play its role and push the slide rod 62 to reset. The moving plate 63 will no longer squeeze the slide tube 53. The slide tube 53 returns to its initial position under the elastic force of the limit spring 52, preparing for the next connection and installation.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An odorous gas sampling device, comprising a sampling tube (1), characterized in that, Also includes: A cylinder cover (2) is installed at one end of the sampling cylinder (1), and a gas delivery pipe (3) is provided on one side of the cylinder cover (2). The disassembly assembly (4) is located at one end of the gas supply pipe (3). The disassembly assembly (4) includes a connecting pipe (41) connected to one end of the gas supply pipe (3). One end of the connecting pipe (41) is connected to a fixing pipe (42). The inner wall of the fixing pipe (42) is connected to an installation pipe (43). A snap-fit ​​component (5) is disposed on the outside of the mounting tube (43), and a reset component (6) for resetting the snap-fit ​​component (5) is disposed on the outside of the fixing tube (42).

2. The odor gas sampling device according to claim 1, characterized in that: The snap-fit ​​component (5) includes a sleeve (51) fixed to the inner wall of the mounting tube (43), a limit spring (52) fixedly connected to the inner wall of the sleeve (51), and a slide tube (53) fixedly connected to one end of the limit spring (52).

3. The odor gas sampling device according to claim 2, characterized in that: The reset component (6) includes a sleeve (61) fixed to the inner wall of the fixed tube (42), and a slide rod (62) is slidably connected to the inner wall of the sleeve (61). One end of the slide rod (62) is fixedly connected to a moving plate (63) for squeezing the slide tube (53).

4. The odor gas sampling device according to claim 1, characterized in that: The inner wall of the cylinder cover (2) is connected to a positioning tube (7), and one end of the positioning tube (7) is connected to one end of the mounting tube (43). The inner wall of the cylinder cover (2) is equipped with a first sealing ring (8) for improving the sealing performance of the positioning tube (7).

5. The odor gas sampling device according to claim 4, characterized in that: The inner wall of the cylinder cover (2) is connected to an exhaust pipe (9) for conveying gas inside the sampling cylinder (1), and a second sealing ring (10) for improving the sealing performance of the exhaust pipe (9) is installed on the inner wall of the cylinder cover (2).

6. The odor gas sampling device according to claim 5, characterized in that: A first regulating valve (11) is provided on the outside of the extraction pipe (9), and a second regulating valve (12) for regulating the gas flow rate is provided at one end of the mounting pipe (43).

7. The odor gas sampling device according to claim 1, characterized in that: A sealing gasket (13) is fixedly connected to one side of the cylinder cover (2), and an installation groove (14) for installing the sealing gasket (1) is provided on the inner wall of the sampling cylinder (1).

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