Pyrolysis sample introduction rod suitable for filamentous tobacco sample

Abstract

The utility model discloses a pyrolysis sample introduction rod suitable for filamentous tobacco samples, which comprises a sample introduction rod body, the bottom of the sample introduction rod body is detachably connected with a spring sampler, the spring sampler comprises a spring sampling part and a connecting part arranged above the spring sampling part, and the spring sampler is detachably connected with the sample introduction rod body through the connecting part; the sample injection rod body is sleeved with a fixing sleeve in a sliding manner, and the fixing sleeve can be locked at any position on the sample injection rod body through a locking structure. Compared with the prior art, the utility model has the following advantages: the rapid filling and cracking sampling of the filamentous tobacco sample are realized, and the rapid cracking of the filamentous tobacco sample is researched by being matched with the glass reactor in the cracking furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of pyrolysis injection devices for tobacco samples, and particularly relates to a pyrolysis injection rod suitable for filamentous tobacco samples. Background Technique

[0002] Tobacco pyrolysis is often regarded as a means close to the cigarette combustion process and is often used as an experimental method for studying flue gas components and tobacco products. Usually, methods such as thermogravimetric analysis, thermogravimetry-infrared combined analysis, and pyrolysis-gas chromatography / mass spectrometry combined analysis are used to study the pyrolysis process of tobacco products at different temperature ranges, so as to master the formation conditions and laws of tobacco pyrolysis products. However, these common means have the following defects: either they are time-consuming offline, or they will introduce interference from other fragment impurities, making it difficult to analyze the obtained pyrolysis products. Therefore, new analysis methods are needed for supplementation.

[0003] Previously, we built a set of online monitoring device for rapid pyrolysis products of tobacco (patent number: ZL202323253081.X), which can quickly heat up to the required temperature range and perform real-time and online observation of tobacco pyrolysis products, obtaining good results. Considering that for tobacco samples of different forms, corresponding injection methods need to be adopted. For filamentous tobacco samples, the existing injection methods are generally: install a sample container with an open top at the bottom of the injection rod, place the filamentous tobacco sample in the sample container, and lower the sample container containing the tobacco sample into the glass reactor in the pyrolysis furnace through the injection rod; during the subsequent pyrolysis process, since the filamentous tobacco sample has been placed in the sample container, the tobacco sample is unevenly heated, resulting in insufficient pyrolysis of the tobacco sample and thus affecting the subsequent detection results. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a pyrolysis injection rod suitable for filamentous tobacco samples, so as to quickly load and pyrolyze and sample filamentous tobacco samples, and cooperate with the glass reactor in the pyrolysis furnace to study the rapid pyrolysis of filamentous tobacco samples.

[0005] The utility model is realized through the following technical solutions:

[0006] A pyrolysis injection rod suitable for filamentous tobacco samples includes an injection rod body. A spring sampler is detachably connected to the bottom of the injection rod body. The spring sampler includes a spring sampling part and a connecting part arranged above the spring sampling part. The spring sampler is detachably connected to the injection rod body through the connecting part. A fixed sleeve is slidably sleeved on the injection rod body, and the fixed sleeve is locked at any position on the injection rod body through a locking structure.

[0007] As a preferred embodiment of the above pyrolysis sampling rod, a rotating cover is sleeved on the upper part of the sampling rod body. The rotating cover is located below the fixed sleeve. An installation ring is provided at the top of the avoidance hole of the top cover of the glass reactor in the pyrolysis furnace. An external thread is provided on the installation ring. A sealing ring is provided between the top of the installation ring of the top cover and the rotating cover. The internal thread hole in the rotating cover is threadedly connected to the external thread of the installation ring. By tightening the rotating cover to squeeze the sealing ring, the sealing of the gap between the avoidance hole of the top cover and the sampling rod body is achieved.

[0008] As a preferred embodiment of the above pyrolysis sampling rod, a slot is opened at the bottom of the sampling rod body, and a first lateral locking screw hole communicating with the slot is opened on the side wall of the sampling rod body. The connecting part of the spring sampler is inserted upward into the slot, and the first lateral locking screw is screwed into the first lateral locking screw hole of the sampling rod body and abutted against the connecting part to achieve the locking installation of the connecting part and the sampling rod body.

[0009] As a preferred embodiment of the above pyrolysis sampling rod, the locking structure includes a second lateral locking screw. A second lateral locking screw hole is opened on the fixed sleeve. By screwing the second lateral locking screw into the second lateral locking screw hole and abutted against the sampling rod body, the locking of the position of the fixed sleeve on the sampling rod body is achieved.

[0010] The utility model has the following advantages compared with the prior art:

[0011] A pyrolysis sampling rod applicable to filamentous tobacco samples provided by the utility model is provided with a spring sampler at the bottom of the sampling rod body for loading filamentous tobacco samples for subsequent pyrolysis, so that the exposed area of the filamentous tobacco samples is larger and the pyrolysis is more uniform and sufficient; in addition, by using the fixed sleeve, the depth of the sampling rod extending into the glass reactor can be adjusted and locked, and the pyrolysis sampling requirements in different situations can be adapted, and the versatility is good. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the utility model.

[0013] Reference numerals in the figure: 1 sampling rod body; 2 spring sampling part; 3 connecting part; 4 first lateral locking screw; 5 fixed sleeve; 6 second lateral locking screw; 7 rotating cover; 8 slot. Detailed Embodiment

[0014] The following details the embodiments of the utility model. The embodiments are implemented on the premise of the technical solution of the utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the utility model is not limited to the following embodiments.

[0015] See Figure 1, this embodiment discloses a pyrolysis injection rod applicable to filamentous tobacco samples, including an injection rod body 1. A spring sampler is detachably connected to the bottom of the injection rod body 1. The spring sampler includes a spring sampling part 2 and a connecting part 3 arranged above the spring sampling part 2. The spring sampler is detachably connected to the injection rod body 1 through the connecting part 3. A slot 8 is opened at the bottom of the injection rod body 1, and a first lateral locking screw hole communicating with the slot 8 is opened on the side wall of the injection rod body 1. The connecting part 3 of the spring sampler is inserted upward into the slot 8, and the first lateral locking screw 4 is screwed into the first lateral locking screw hole of the injection rod body 1 and abuts against the connecting part 3 to realize the locking installation of the connecting part 3 and the injection rod body 1.

[0016] A fixing sleeve 5 is slidably sleeved on the injection rod body 1, and the fixing sleeve 5 is locked at any position on the injection rod body 1 through a locking structure. The locking structure includes a second lateral locking screw 6. A second lateral locking screw hole is opened on the fixing sleeve 5. By screwing the second lateral locking screw 6 into the second lateral locking screw hole and abutting against the injection rod body 1, the position of the fixing sleeve 5 on the injection rod body 1 is locked. By loosening the second lateral locking screw 6, the position of the fixing sleeve 5 on the injection rod body 1 can be adjusted, so that the depth of the injection rod inserted into the glass reactor can be adjusted.

[0017] A rotary cover 7 is sleeved on the injection rod body 1. The rotary cover 7 is located below the fixing sleeve 5. An installation ring is provided at the top of the avoidance hole of the top cover of the glass reactor in the pyrolysis furnace. An external thread is provided on the installation ring. A sealing ring is provided between the top of the installation ring of the top cover and the rotary cover 7. The internal thread in the rotary cover 7 is threadedly connected with the external thread of the installation ring. By tightening the rotary cover 7 to squeeze the sealing ring, the gap between the avoidance hole of the top cover and the injection rod body 1 is sealed.

[0018] During use, first load the filamentous tobacco sample into the spring sampling part 2 of the spring sampler, then insert the connecting part 3 of the spring sampler into the slot 8 at the bottom of the injection rod body 1, and screw the first lateral locking screw 4 into the first lateral locking screw hole of the injection rod body 1 and abut against the connecting part 3 to realize the locking installation of the spring sampler and the injection rod body 1. Then adjust the position of the fixing sleeve 5 on the injection rod body 1 according to the depth that the injection rod needs to be inserted into the glass reactor and lock it.

[0019] Then, send the filamentous tobacco sample into the glass reactor of the pyrolysis furnace through the injection rod. The specific operation is as follows:

[0020] Insert the sampling rod loaded with the filamentous tobacco sample downward from the avoidance hole of the top cover into the glass reactor. Then rotate the rotary cap 7 and screw it tightly onto the mounting ring of the top cover. By squeezing the sealing ring with the tightened rotary cap 7, the gap between the avoidance hole of the top cover and the sampling rod body 1 is sealed, thus completing the convenient installation of the sampling rod and the glass reactor. After that, the filamentous tobacco sample undergoes pyrolysis in the glass reactor. Due to the large exposed area of the filamentous tobacco sample, its pyrolysis is more uniform and sufficient.

[0021] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pyrolysis injection rod suitable for filamentous tobacco samples, comprising an injection rod body, characterized in that: A spring sampler is detachably connected to the bottom of the injection rod body. The spring sampler includes a spring sampling portion and a connecting portion arranged above the spring sampling portion. The spring sampler is detachably connected to the injection rod body through the connecting portion. A fixing sleeve is slidably sleeved on the injection rod body, and the fixing sleeve is locked at any position on the injection rod body through a locking structure.

2. A pyrolysis injection rod suitable for filamentous tobacco samples as claimed in claim 1, characterized in that: The injection rod body is hollowly sleeved with a screw cap, which is located below the fixed sleeve; a mounting ring is provided at the top of the avoidance hole of the top cover of the glass reactor in the cracking furnace, and an external thread is provided on the mounting ring; a sealing ring is provided between the top of the mounting ring of the top cover and the screw cap; a threaded connection is formed between the inner screw hole of the screw cap and the external thread of the mounting ring; the sealing ring is squeezed by tightening the screw cap to achieve sealing of the gap between the avoidance hole of the top cover and the injection rod body.

3. A pyrolysis injection rod suitable for filamentous tobacco samples as claimed in claim 1, characterized in that: A slot is provided at the bottom of the injection rod body, and a first lateral locking screw hole connected to the slot is provided on the side wall of the injection rod body. The connecting part of the spring sampler is inserted upward into the slot, and is screwed into the first lateral locking screw hole of the injection rod body through the first lateral locking screw and tightened on the connecting part, thereby realizing the locking installation of the connecting part and the injection rod body.

4. A pyrolysis injection rod suitable for filamentous tobacco samples as claimed in claim 1, characterized in that: The locking structure includes a second lateral locking screw, and a second lateral locking screw hole is opened on the fixing sleeve. The second lateral locking screw is screwed into the second lateral locking screw hole and tightened on the injection rod body to achieve locking of the fixing sleeve on the injection rod body.

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