A tobacco sampler for a dust extraction duct

Abstract

The application discloses a tobacco sample collector for dust removal pipeline, which comprises a tobacco sample cavity, a sampling port, a filter screen, a sealing cover, a sealing ring, a handle and a sealing thread. The tobacco sample cavity is a hollow structure, the sampling port is arranged on one side of the tobacco sample cavity, the filter screen is arranged on the other side of the tobacco sample cavity, the lower end of the tobacco sample cavity is provided with an internal thread, and the sealing cover is connected with the internal thread of the lower end of the tobacco sample cavity through the sealing thread. The sealing ring is arranged on the upper end of the sealing cover and is used for realizing air-tight sealing. The handle is arranged on the sealing cover and is used for tightening or loosening the sealing cover. The tobacco sample collector has the following advantages: (1) accurate sampling: the trapezoidal sampling port guides the material to flow into the anti-backflow, the semicircular filter screen screens dust and leaves tobacco samples, and the problem of insufficient representation of traditional sampling is solved; (2) easy sealing operation: the elastic sealing ring prevents negative pressure leakage, the sealing thread and the handle make the loading and unloading and sample transfer convenient, and the tobacco sample collector is beneficial to popularization.

Description

Technical Field

[0001] This utility model relates to the technical field of smoke and dust control and tobacco sample collection equipment, and in particular to a tobacco sampler for dust removal pipelines. Background Technology

[0002] In the dust removal system of the cigarette packaging workshop, negative pressure generated by fans is used to transport tobacco dust, tobacco shreds, and tobacco stems released during production through pipelines to a dust collector for centralized collection. This system is mainly driven by motor-driven fans to achieve both dust removal and tobacco shred conveying functions. In actual production, to ensure the normal operation of equipment and the effectiveness of process control, the tobacco shred content in the effluent collected from the dust removal equipment is usually analyzed. However, due to the insufficient representativeness of the effluent samples, it is difficult to accurately determine the normal operation of a particular equipment group, which also limits the assessment of the value of residual tobacco recycling.

[0003] Therefore, there is an urgent need for a representative method and apparatus for collecting samples at key locations in dust removal ducts to improve the shortcomings of existing technologies. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a tobacco sampler for dust removal pipelines, which can effectively collect tobacco samples from the pipelines and provide a basis for subsequent analysis and process optimization.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0006] A tobacco sampler for a dust removal duct includes a tobacco sampling chamber, a sampling port, a filter screen, a sealing cap, a sealing ring, a handle, and a sealing thread. The tobacco sampling chamber is hollow, with the sampling port located on one side and the filter screen located on the other side away from the sampling port. The lower end of the tobacco sampling chamber has an internal thread, and the sealing cap is adapted to the internal thread at the lower end of the tobacco sampling chamber via the sealing thread. The sealing ring is located at the upper end of the sealing cap and is used to tightly fit with a flat-mouth joint at the opening of the dust removal duct to achieve an airtight seal. The handle is located on the sealing cap and is used to tighten or loosen the sealing cap.

[0007] Preferably, in the above technical solution, the tobacco sampling chamber is a cylindrical structure made of hard aluminum alloy; the sampling port is a trapezoidal structure that is wider on the outside and narrower on the inside, which is used to guide the material into the tobacco sampling chamber and prevent the material from flowing back.

[0008] Preferably, in the above technical solution, the filter screen is a semi-circular arc-shaped filter screen made of stainless steel plated with tungsten carbide, and the area of ​​the filter screen accounts for one-third of the side area of ​​the tobacco sampling chamber.

[0009] Preferably, in the above technical solution, the mesh size of the filter screen is 1mm×1mm, which is used to remove dust and retain tobacco shreds, tobacco dust and tobacco stem samples.

[0010] Preferably, in the above technical solution, the sealing ring is an elastic sealing ring; when the tobacco sampler is assembled with the negative pressure dust removal pipe, the elastic sealing ring is tightly pressed onto the flat joint at the opening of the negative pressure dust removal pipe, so that an airtight seal is formed between the tobacco sampler and the negative pressure dust removal pipe.

[0011] Preferably, in the above technical solution, the handle is fixedly connected to the side of the sealing cover away from the tobacco sampling chamber. By holding the handle, the sealing cover is rotated around the axis of the sealing thread to achieve the connection or separation of the sealing cover from the tobacco sampling chamber.

[0012] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0013] (1) High sampling accuracy: The material is guided into the sampling port with a wide outer and narrow inner shape and backflow is prevented. With the semi-circular arc filter, dust can be accurately screened out and the required tobacco dust, tobacco shreds and tobacco stems can be left as samples, which solves the problem of insufficient representativeness of traditional sampling and provides reliable samples for equipment status judgment and residual smoke recovery assessment.

[0014] (2) Strong adaptability and durability: The tobacco sampling chamber is made of hard aluminum alloy to ensure mechanical strength under negative pressure environment, and the filter screen is made of stainless steel plated with tungsten carbide to achieve corrosion resistance and antistatic properties, adapting to the working conditions of cigarette dust removal system and extending the service life of the device.

[0015] (3) Excellent sealing and operability: The elastic sealing ring and the pipe flat joint are tightly fitted to achieve airtight sealing and avoid negative pressure leakage; the sealing cover is connected by sealing thread and is equipped with an outer handle, which makes the installation, disassembly and sample transfer operation convenient and facilitates its widespread application in the dust removal system of cigarette production. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0017] Figure 1 This is a schematic diagram illustrating the implementation status of the tobacco sampler of this application.

[0018] Figure 2 This is a schematic diagram of the tobacco sampler of this application;

[0019] Figure 3 This is a schematic diagram of the tobacco sampling chamber.

[0020] Figure 4A cross-sectional schematic diagram of the tobacco sampling chamber;

[0021] Figure 5 This is a schematic diagram of the semi-enclosed space formed by the antistatic roller and the outer shell.

[0022] Wherein: 1-Dust collector discharge pipe, 2-Negative pressure dust collector pipe, 3-Tobacco sampler, 301-Tobacco sampling chamber, 302-Sampling port, 303-Filter screen, 304-Sealing cover, 305-Sealing ring, 306-Handle, 307-Sealing thread. Detailed Implementation

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0024] A tobacco sampler for dust removal ducts includes a tobacco sampling chamber 301, a sampling port 302, a filter screen 303, a sealing cover 304, a sealing ring 305, a handle 306, and a sealing thread 307. Details are as follows:

[0025] A tobacco sampler for a dust removal duct includes a tobacco sampling chamber 301, a sampling port 302, a filter screen 303, a sealing cover 304, a sealing ring 305, a handle 306, and a sealing thread 307. The tobacco sampling chamber 301 is a hollow structure. The sampling port 302 is located on one side of the tobacco sampling chamber 301, and the filter screen 303 is located on the other side of the tobacco sampling chamber 301 away from the sampling port 302. The lower end of the tobacco sampling chamber 301 is provided with an internal thread. The sealing cover 304 is adapted to the internal thread at the lower end of the tobacco sampling chamber 301 through the sealing thread 307. The sealing ring 305 is located on the upper end of the sealing cover 304 and is used to tightly fit with the flat joint at the opening of the dust removal duct to achieve an airtight seal. The handle 306 is located on the sealing cover 304 and is used to tighten or loosen the sealing cover 304.

[0026] Furthermore, the tobacco sampling chamber 301 is a cylindrical structure made of hard aluminum alloy; the sampling port 302 is a trapezoidal structure that is wider on the outside and narrower on the inside, used to guide the material into the tobacco sampling chamber 301 and prevent the material from flowing back. The filter screen 303 is a semi-circular arc-shaped filter screen made of stainless steel with tungsten carbide plating, and the area of ​​the filter screen 303 occupies one-third of the side area of ​​the tobacco sampling chamber 301. The mesh size of the filter screen 303 is 1mm × 1mm, used to remove dust and retain tobacco, tobacco dust and tobacco stem samples. Of course, this application is not limited to this, and those skilled in the art can choose appropriate materials and sizes as needed.

[0027] Furthermore, the sealing ring 305 is an elastic sealing ring; when the tobacco sampler is assembled with the negative pressure dust removal pipe 2, the elastic sealing ring 305 is tightly pressed onto the flat joint at the opening of the negative pressure dust removal pipe 2, so that an airtight seal is formed between the tobacco sampler and the negative pressure dust removal pipe 2.

[0028] Furthermore, the handle 306 is fixedly connected to the side of the sealing cover 304 away from the tobacco sampling chamber 301. By holding the handle 306, the sealing cover 304 is rotated around the axis of the sealing thread 307, so as to realize the connection or separation of the sealing cover 304 and the tobacco sampling chamber 301.

[0029] The installation and usage process is as follows:

[0030] (1) Preliminary preparation stage: Confirm that the connection between the dust collector discharge pipe 1 and the negative pressure dust collector pipe 2 in the dust removal system is normal, and that the negative pressure dust collector pipe 2 has been modified - cut an opening matching the sampler interface at the sampling point (preferably the lower end of the pipe near the connection end of the dust collector discharge pipe 1 and the negative pressure dust collector pipe 2), weld a flat end connector at the opening and complete the sealing test (the flat end connector is equipped with a corresponding flat end cap) to ensure no air leakage; prepare the tobacco sampler to be used (including tobacco sampling chamber 301, sampling port 302, filter screen 303, sealing cover 304, sealing ring 305, handle 306, sealing thread 307) and a clean sample collection container.

[0031] Note: The opening size must match the interface of the tobacco sampler 3. Check that the flat surface of the connector is smooth and burr-free to ensure a tight fit with the elastic sealing ring 305 of the tobacco sampler 3. If any welding defects are found (such as gaps or unevenness), re-welding or grinding repair is required. The pipe material should be compatible with the welding method to avoid structural weakening. Before installing the tobacco sampler 3, the sealing performance of the modified pipe must be verified to ensure normal operation under negative pressure conditions.

[0032] (2) Sampler Installation: After confirming that the pipeline modification and sealing test are qualified, proceed to the sampler installation stage. First, confirm that there is no material accumulation in the dust collector discharge pipeline 1 and that the negative pressure dust collector pipeline 2 is in a non-working state. Then, remove the flat end cap at the sampling point opening of the negative pressure dust collector pipeline 2. Insert the tobacco sampler 3 into the pipeline opening, ensuring that the trapezoidal sampling port 302 faces the material flow direction to effectively capture the sample. At the same time, adjust the direction of the arc-shaped filter screen 303 so that its mesh faces the negative pressure side, allowing fine dust to pass through while retaining samples such as tobacco. Connect the sealing cover 304 to the tobacco sampling chamber 301 through the sealing thread 307. Rotate the sealing cover 304 through the handle 306 so that the sealing cover 304 is adapted to the lower end of the tobacco sampling chamber 301 through the sealing thread 307 until the sealing ring 305 is tightly pressed onto the pipeline flat end joint to form an airtight seal, thus completing the installation.

[0033] (3) Sample collection: Start the dust removal system. The material enters the negative pressure dust removal pipe 2 through the dust removal tank discharge pipe 1 and flows along the pipe under the negative pressure of the system. The negative pressure drives the tobacco dust, tobacco shreds, tobacco stems and other materials through the sampling port 302 which is wider on the outside and narrower on the inside to enter the tobacco shred sampling chamber 301. The dust is screened out through the filter screen 303 with a mesh size of 1mm×1mm. Set the sampling time according to the required sample volume and the material conveying rate of the dust removal tank discharge pipe 1. During this period, keep the dust removal system running normally to ensure continuous sample collection.

[0034] (4) Sampler disassembly and sample transfer: After the set sampling time is reached or the sample collection is completed, the tobacco sampler 3 must be safely removed and the pipeline must be restored to normal operation. Specifically, the dust removal system is turned off, and the material conveying from the dust collection tank discharge pipeline 1 to the negative pressure dust collection pipeline 2 is stopped; the sealing cover 304 is rotated in the opposite direction by the handle 306 to disconnect the sealing thread 307 connection, and the tobacco sampler is carefully removed and kept upright to avoid sample spillage; the sealing cover 304 is unscrewed, and the sample volume and mass in the tobacco sampling chamber 301 are transferred to the designated container for subsequent analysis.

[0035] (5) Follow-up processing: Clean the remaining impurities in the tobacco sampling chamber 301 and filter screen 303, and check whether the sealing ring 305 is intact; reinstall and fix the flat end cap at the sampling point opening of the negative pressure dust removal pipeline 2 to ensure the airtightness of the pipeline and avoid affecting the normal material transportation of the dust removal tank discharge pipeline 1 and the negative pressure dust removal pipeline 2; reassemble and reset all parts of the tobacco sampler and store them properly for future use.

[0036] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various different choices and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A tobacco sampler for dust removal pipelines, characterized in that, The device includes a tobacco sampling chamber (301), a sampling port (302), a filter screen (303), a sealing cap (304), a sealing ring (305), a handle (306), and a sealing thread (307). The tobacco sampling chamber (301) has a hollow structure. The sampling port (302) is located on one side of the tobacco sampling chamber (301), and the filter screen (303) is located on the other side of the tobacco sampling chamber (301) away from the sampling port (302). The sampling chamber (301) has an internal thread at its lower end. The sealing cover (304) is adapted to the internal thread at the lower end of the tobacco sampling chamber (301) through the sealing thread (307). The sealing ring (305) is set at the upper end of the sealing cover (304) and is used to fit tightly with the flat joint at the opening of the dust removal pipe to achieve an airtight seal. The handle (306) is set on the sealing cover (304) and is used to tighten or loosen the sealing cover (304).

2. The tobacco sampler for dust removal pipelines according to claim 1, characterized in that, The tobacco sampling chamber (301) is a cylindrical structure made of hard aluminum alloy; the sampling port (302) is a trapezoidal structure that is wider on the outside and narrower on the inside, which is used to guide the material into the tobacco sampling chamber (301) and prevent the material from flowing back.

3. The tobacco sampler for dust removal pipelines according to claim 1, characterized in that, The filter screen (303) is a semi-circular arc-shaped filter screen made of stainless steel with tungsten carbide plating on the surface. The area of ​​the filter screen (303) accounts for one-third of the side area of ​​the tobacco sampling chamber (301).

4. The tobacco sampler for dust removal pipelines according to claim 3, characterized in that, The filter screen (303) has a mesh size of 1mm×1mm and is used to remove dust and retain tobacco shreds, tobacco dust and tobacco stem samples.

5. The tobacco sampler for dust removal pipelines according to claim 1, characterized in that, The sealing ring (305) is an elastic sealing ring; when the tobacco sampler is assembled with the negative pressure dust removal pipe (2), the elastic sealing ring (305) is tightly pressed onto the flat joint at the opening of the negative pressure dust removal pipe (2), so that an airtight seal is formed between the tobacco sampler and the negative pressure dust removal pipe (2).

6. The tobacco sampler for dust removal pipelines according to claim 1, characterized in that, The handle (306) is fixedly connected to the side of the sealing cover (304) away from the tobacco sampling chamber (301). By holding the handle (306), the sealing cover (304) is rotated around the axis of the sealing thread (307) to achieve the connection or separation of the sealing cover (304) from the tobacco sampling chamber (301).

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