Volatile component collection equipment
By designing a volatile component collection device, the problems of high cost, limited adsorption capacity and temperature limitation in existing volatile component collection methods have been solved. The device enables segmented collection of volatile components at specific temperatures and simulates novel cigarette smoking, thereby improving collection efficiency and purity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-03-31
AI Technical Summary
Existing methods for collecting volatile components require external mechanical pumps, have expensive sample tubes with limited adsorption capacity, and cannot analyze the loss of volatile components from solid samples under heating conditions. Furthermore, Py-GC/MS suffers from limitations such as small sample loading volume, temperature restrictions, and inability to simulate puff-by-puff inhalation of novel cigarettes.
A volatile component collection device was designed, including a carrier gas pipeline, a gas flow meter, a heating device, a material storage chamber, a first gas path switching valve, and a collection device. The heater and the gas path switching valve are controlled by a controller to achieve segmented collection of volatile components at a specific temperature and simulate the puff-by-puff inhalation of a new type of cigarette.
It enables the segmented collection of different volatile components at specific temperatures, improving collection efficiency and purity, reducing equipment costs, and is suitable for multi-temperature range analysis and simulation of novel cigarette smoking.
Smart Images
Figure CN224066735U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical analysis technology, and more specifically, to a volatile component collection device. Background Technology
[0002] Existing methods for collecting and sampling volatile components mainly involve using an external pump to adsorb aerosol components into a specific sample tube (usually a stainless steel thermal adsorption-desorption tube), followed by subsequent instrumental analysis. This method has the following problems: it requires an external mechanical pump; the sample tubes are expensive; their adsorption capacity is limited; there is a lack of broad-spectrum adsorption packing materials; and it cannot analyze the loss of volatile components from solid samples under heating conditions.
[0003] To address these issues, pyrolysis-gas chromatography / mass spectrometry (Py-GC / MS) technology was developed, enabling the qualitative and semi-quantitative analysis of eluents from solid samples or materials under heated conditions. Py-GC / MS separates volatile compounds generated during the pyrolysis process of a sample or material using gas chromatography followed by mass spectrometry detection, ultimately achieving qualitative and quantitative analysis of the eluents. Py-GC / MS boasts advantages such as high separation precision, good separation effect, and good reproducibility, and is widely used in chemistry, biology, materials science, and other fields. However, Py-GC / MS also has some limitations in practical applications: 1) The sample loading volume is small, typically only a few milligrams, making it impossible to collect different volatile components in segments at specific temperatures; 2) It can only analyze volatile components below a certain temperature, meaning it cannot simultaneously study the segmented loss of volatile components from the same sample across multiple heating temperature ranges; 3) It cannot simulate the collection of volatile components during puff-by-puff inhalation of new types of cigarettes. Utility Model Content
[0004] In view of this, the purpose of this utility model is to propose a volatile component collection device to achieve segmented collection of different volatile components at a specific temperature and segmented capture of volatile components within a specific heating temperature range, which can simulate the collection of volatile components during puffing of a new type of cigarette.
[0005] To achieve the above objectives, this utility model provides a volatile component collection device, comprising a carrier gas pipeline, a gas flow meter, a heating device, a material storage cavity, a first gas path switching valve, a collection device, and a controller, wherein: the carrier gas pipeline is used for supplying gas; the gas flow meter is connected and installed on the carrier gas pipeline; the material storage cavity is provided with a storage chamber for storing solid or liquid samples, and the storage chamber is connected to the carrier gas pipeline; the heating device includes a heating layer, a temperature sensor, and a heater, the heater being used to heat the heating layer, the heating layer being wrapped around the outer wall of the material storage cavity, and the temperature sensor being disposed within the storage cavity; the first gas path switching valve is connected and disposed on the carrier gas pipeline; the collection device includes a collection bottle containing an absorbent liquid, the collection bottle being placed at the end of the carrier gas pipeline for collecting volatile component gases; the controller is communicatively connected to the gas flow meter, the heater, the temperature sensor, and the first gas path switching valve.
[0006] Optionally, it also includes a cold trap device or an ice bath, with the collection bottle placed inside the cold trap device or the ice bath.
[0007] Optionally, it also includes a cleaning device, a second gas circuit switch valve, and a three-way connector. The carrier gas pipeline includes a connected delivery section, a cleaning section, and a collection section. The three-way connector includes a first end, a second end, and a third end. The first end is connected to the delivery section, the second end is connected to the collection section, and the third end is connected to the cleaning section. The second gas circuit switch valve is connected to the cleaning section, and the first gas circuit switch valve is connected to the delivery section. The collection bottle is connected to the end of the collection section. The cleaning device includes an infusion pump and a cleaning bottle containing cleaning fluid. The suction port of the infusion pump is placed inside the cleaning bottle, and the output port of the infusion pump is connected to the collection section. The controller is communicatively connected to the second gas circuit switch valve.
[0008] Optionally, the heater is a heating rod.
[0009] Optionally, the cold trap device is a condensation trap.
[0010] Optionally, the conveying section includes a first pipeline and a second pipeline, and the storage cavity has a first air port and a second air port that are connected to and opposite to the storage cavity. The first air port is connected to the first pipeline, and the second air port is connected to the second pipeline. The gas flow meter is connected and installed on the first pipeline, and the second pipeline is connected and installed at the first end.
[0011] Optionally, both the first air inlet and the second air inlet are covered with a microporous filter membrane.
[0012] Optionally, both the first pneumatic switch valve and the second pneumatic switch valve are pneumatic ball valves.
[0013] The volatile component collection device provided by this utility model includes a carrier gas pipeline, a gas flow meter, a heating device, a material storage chamber, a first gas path switch valve, a collection device, and a controller. First, the gas flow meter, the material storage chamber, and the first gas path switch valve are connected and installed on the carrier gas pipeline, and the collection bottle is placed at the end of the carrier gas pipeline. Then, a solid or liquid sample is placed in the storage chamber of the material storage chamber. Finally, the controller turns on the heater, which heats the solid or liquid sample in the storage chamber. When the temperature sensor detects that the temperature in the storage chamber reaches a specific temperature or a specific temperature range, the gas in the carrier gas pipeline at a specific flow rate will carry the volatile components in the storage chamber to the collection bottle, thereby realizing the segmented collection of different volatile components at a specific temperature or the segmented capture of volatile components within a specific heating temperature range. Alternatively, by setting the quantitative value of the gas flow meter and controlling the timed opening and closing of the first gas path switch valve through the controller, the collection of volatile components under the puff-by-puff inhalation of a new type of cigarette can be simulated. Attached Figure Description
[0014] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of this utility model, wherein:
[0015] Figure 1 This is a schematic diagram of the structure of a volatile component collection device according to an embodiment of the present invention.
[0016] Explanation of reference numerals in the attached figures:
[0017] 1: Carrier gas pipeline; 2: Gas flow meter; 3: Material storage cavity; 4: Storage cavity; 5: First gas path switch valve; 6: Collection bottle; 7: Heating layer; 8: Cold trap device or ice bath; 9: Cleaning device; 10: Second gas path switch valve; 11: First pipeline; 12: Second pipeline; 13: Collection section; 14: Cleaning section. Detailed Implementation
[0018] The present invention will now be described in detail with reference to the embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.
[0019] like Figure 1As shown, the volatile component collection device provided by this utility model includes a carrier gas pipeline 1, a gas flow meter 2, a heating device, a material storage chamber 3, a first gas path switching valve 5, a collection device, and a controller. The carrier gas pipeline 1 is used for supplying gas; the gas flow meter 2 is connected and installed on the carrier gas pipeline 1; the material storage chamber 3 contains a storage cavity 4 for storing solid or liquid samples, and the storage cavity 4 is connected to the carrier gas pipeline 1; the heating device includes a heating layer 7, a temperature sensor, and a heater, the heater being used to heat the heating layer 7, which is wrapped around the outer wall of the material storage chamber 3; the temperature sensor is located inside the storage cavity 4; the first gas path switching valve 5 is connected and installed on the carrier gas pipeline 1; the collection device includes a collection bottle 6 containing absorbent liquid, which is placed at the end of the carrier gas pipeline 1 for collecting volatile component gases; the controller is communicatively connected to the gas flow meter 2, the heater, the temperature sensor, and the first gas path switching valve 5.
[0020] It should be noted that: the carrier gas in carrier gas line 1 can be any single gas (compressed air, nitrogen, helium, etc.) or a mixture of at least two gases in any proportion; the gas cylinder can supply gas to carrier gas line 1; the carrier gas flow rate can be controlled by the gas flow rate, up to 20 mL / min; the heater can heat to 400℃, which can achieve the volatilization of almost all volatile components; as needed, different volatile components can be collected by changing the collection bottle 6 containing different absorbent liquids.
[0021] The volatile component collection device provided by this utility model includes a carrier gas pipeline 1, a gas flow meter 2, a heating device, a material storage chamber 3, a first gas path switching valve 5, a collection device, and a controller. First, the gas flow meter 2, the material storage chamber 3, and the first gas path switching valve 5 are connected and installed on the carrier gas pipeline 1. A collection bottle 6 is placed at the end of the carrier gas pipeline 1. Then, a solid or liquid sample is placed in the storage chamber 4 of the material storage chamber 3. Finally, the controller activates the heater, which heats the solid or liquid sample in the storage chamber 4. The product is heated, and when the temperature sensor detects that the temperature in the storage chamber 4 reaches a specific temperature or a specific temperature range, the gas in the carrier gas pipeline 1 at a specific flow rate will carry the volatile components in the storage chamber 4 to the collection bottle 6, thereby realizing the segmented collection of different volatile components at a specific temperature or the segmented capture of volatile components at a specific heating temperature range. Alternatively, the quantitative setting of the gas flow meter 2 and the timed opening and closing of the first gas path switch valve 5 are controlled by the controller to simulate the collection of volatile components under the puffing of a new type of cigarette.
[0022] like Figure 1As shown, it also includes a cold trap device or ice bath 8, with the collection bottle 6 placed inside the cold trap device or ice bath 8. In this embodiment, the lowest temperature of the ice bath 8 can reach -10°C. The lower temperature ensures that the components have better absorption efficiency in the cold absorbent liquid, thus improving the collection efficiency of the volatile component collection device.
[0023] like Figure 1 As shown, the system also includes a cleaning device 9, a second gas path switching valve 10, and a three-way connector. The carrier gas pipeline 1 includes a connected conveying section, a cleaning section 14, and a collecting section 13. The three-way connector includes a first end, a second end, and a third end. The first end is connected to the conveying section, the second end is connected to the collecting section 13, and the third end is connected to the cleaning section 14. The second gas path switching valve 10 is connected to the cleaning section 14, and the first gas path switching valve 5 is connected to the conveying section. The collecting bottle 6 is connected to the end of the collecting section 13. The cleaning device 9 includes an infusion pump and a cleaning bottle containing cleaning fluid. The inlet of the infusion pump is placed inside the cleaning bottle, and the outlet of the infusion pump is connected to the collecting section 13. The controller is communicatively connected to the second gas path switching valve 10. In this embodiment, when the first gas path switching valve 5 is closed and the second gas path switching valve 10 is opened, the pipelines of the cleaning section 14 and the collecting section 13 can be cleaned, avoiding contamination of the next collection of volatile components by residual gas in the pipeline and improving the collection purity of the volatile component collection equipment.
[0024] In one embodiment of this utility model, the heater is a heating rod, which is readily available and reduces the production cost of the volatile component collection equipment.
[0025] In one embodiment of this utility model, the cold trap device is a condenser trap. The condenser trap has a good condensation effect and is easy to purchase, which reduces the production cost of volatile component collection equipment.
[0026] like Figure 1 As shown, the conveying section includes a first pipeline 11 and a second pipeline 12. The storage cavity 4 has a first air port and a second air port that are connected to and opposite to each other. The first air port is connected to the first pipeline 11, and the second air port is connected to the second pipeline 12. A gas flow meter 2 is connected and installed on the first pipeline 11, and the second pipeline 12 is connected and installed at the first end. In this embodiment, the installation of the volatile component collection device is facilitated, improving the ease of installation and use of the volatile component collection device.
[0027] In one embodiment of this utility model, both the first and second air ports are covered with microporous filter membranes. Covering the first and second air ports with microporous filter membranes can prevent powder samples from being blown onto the carrier gas pipeline 1 under high airflow, thus preventing contamination of the subsequent collection of volatile components and improving the collection convenience of the volatile component collection device.
[0028] In one embodiment of this invention, both the first gas path switching valve 5 and the second gas path switching valve 10 are pneumatic ball valves. Pneumatic ball valves are readily available, reducing the production cost of the volatile component collection equipment.
[0029] The volatile component collection device provided by this utility model includes a carrier gas pipeline 1, a gas flow meter 2, a heating device, a material storage chamber 3, a first gas path switching valve 5, a collection device, and a controller. First, the gas flow meter 2, the material storage chamber 3, and the first gas path switching valve 5 are connected and installed on the carrier gas pipeline 1. A collection bottle 6 is placed at the end of the carrier gas pipeline 1. Then, a solid or liquid sample is placed in the storage chamber 4 of the material storage chamber 3. Finally, the controller activates the heater, which heats the solid or liquid sample in the storage chamber 4. The product is heated, and when the temperature sensor detects that the temperature in the storage chamber 4 reaches a specific temperature or a specific temperature range, the gas in the carrier gas pipeline 1 at a specific flow rate will carry the volatile components in the storage chamber 4 to the collection bottle 6, thereby realizing the segmented collection of different volatile components at a specific temperature or the segmented capture of volatile components at a specific heating temperature range. Alternatively, the quantitative setting of the gas flow meter 2 and the timed opening and closing of the first gas path switch valve 5 are controlled by the controller to simulate the collection of volatile components under the puffing of a new type of cigarette.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A volatile component collection apparatus, characterized by, The device comprises a carrier gas pipeline, a gas flow meter, a heating device, a material storage cavity, a first gas path on-off valve, a collection device and a controller. The carrier gas pipeline is used for gas supply. The gas flow meter is communicatively installed on the carrier gas pipeline. The material storage cavity is provided with a storage cavity for storing solid or liquid samples, and the storage cavity is in communication with the carrier gas pipeline. The heating device comprises a heating layer, a temperature sensor and a heater, the heater is used for heating the heating layer, the heating layer is wrapped on the outer wall of the material storage cavity, and the temperature sensor is arranged in the storage cavity. The first gas path on-off valve is communicatively arranged on the carrier gas pipeline. The collection device comprises a collection bottle containing an absorption liquid, which is placed at the end of the carrier gas pipeline and used for collecting volatile component gas. The controller is in communication connection with the gas flow meter, the heater, the temperature sensor and the first gas path on-off valve.
2. The volatile component collection apparatus of claim 1, wherein, It also comprises a cold trap device or an ice bath pool, and the collection bottle is placed in the cold trap device or the ice bath pool.
3. The volatile component collection apparatus of claim 1, wherein, It also comprises a cleaning device, a second gas path on-off valve and a tee joint, the carrier gas pipeline comprises a conveying section, a cleaning section and a collection section in communication, the tee joint comprises a first end, a second end and a third end, the first end is communicatively installed on the conveying section, the second end is communicatively installed on the collection section, the third end is communicatively installed on the cleaning section, the second gas path on-off valve is communicatively arranged on the cleaning section, the first gas path on-off valve is communicatively arranged on the conveying section, the collection bottle is in communication with the end of the collection section, the cleaning device comprises a liquid pump and a cleaning bottle containing a cleaning liquid, the suction port of the liquid pump is placed in the cleaning bottle, the output port of the liquid pump is in communication with the collection section, and the controller is in communication connection with the second gas path on-off valve.
4. The volatile component collection apparatus of claim 1, wherein The heater is a heating rod.
5. The volatile component collection apparatus of claim 2, wherein, The cold trap device is a condensation trap.
6. The volatile component collection apparatus of claim 3, wherein The conveying section comprises a first pipeline and a second pipeline, the storage cavity is provided with a first gas port and a second gas port in communication with the storage cavity and arranged oppositely, the first gas port is in communication with the first pipeline, the second gas port is in communication with the second pipeline, the gas flow meter is communicatively installed on the first pipeline, and the second pipeline is communicatively installed on the first end.
7. The volatile component collection apparatus of claim 6, wherein, The first gas port and the second gas port are both covered with a microporous filter membrane.
8. The volatile component collection apparatus of claim 3, wherein, The first gas path on-off valve and the second gas path on-off valve are both pneumatic ball valves.