Movable tobacco dustproof screening device
By designing a mobile tobacco leaf dust-proof screening device, the problems of portability of large equipment and low efficiency of manual screening are solved, realizing efficient and convenient multi-stage screening of tobacco leaves and environmental protection, which is suitable for the quality inspection needs of small batches of samples.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HONGYUN HONGHE TOBACCO (GRP) CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-08-04
AI Technical Summary
Existing large-scale leaf vibrating sorting screen equipment is bulky, complex in structure, and expensive, making it difficult to meet the needs of tobacco quality inspection for miniaturization, portability, and efficient multi-stage screening. In addition, manual screening is inefficient, labor-intensive, and generates dust pollution.
A mobile tobacco leaf dust-proof screening device is designed, which adopts a compact screening shell combined with a multi-stage detachable screening disc, and combines a transparent device cover, a dustproof door and a collection box to form a sealed structure. Equipped with brake wheels and handles, it can achieve efficient and fine screening and prevent dust. It is suitable for flexible screening of small batches of samples.
It enables efficient and convenient multi-stage screening of tobacco leaves, reduces labor intensity, improves the quality inspection environment, enhances operational safety and equipment flexibility, and reduces maintenance costs.
Smart Images
Figure CN224584164U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tobacco leaf screening equipment, specifically to a mobile tobacco leaf dust-proof screening device. Background Technology
[0002] In the processing and quality control of tobacco leaves, enterprises typically need to screen the leaves based on appearance indicators such as leaf shape and size to assess their grade or for subsequent grading. For example, in re-drying enterprises, incoming material inspection often requires fine screening of small samples of tobacco leaves to accurately determine the quality of the raw materials. Although the volume of these screening tasks is not large, they demand high levels of screening accuracy, sorting consistency, and operational standardization.
[0003] Currently, the widely used blade vibrating sorting screen in the industry is a professionally powered screening device with multiple screen sizes, capable of efficiently and automatically separating tobacco leaves according to different sizes. Thanks to its excellent sorting effect and stability, many companies still use this equipment even in quality inspection processes involving only a small number of samples. However, this type of equipment is essentially designed for large-scale industrial production; it is bulky, complex in structure, and expensive. It not only occupies a large space and has high maintenance costs, but also requires electric power and dedicated personnel for monitoring, lacking flexibility and failing to meet the demands for miniaturization, portability, and independence in quality inspection operations.
[0004] In addition, the blade vibrating sorting screen is bulky and easily generates a lot of dust during operation. It can usually only be fixedly installed in a dedicated area in the production workshop. Quality inspectors need to enter the production site to use it, and often need to coordinate with the production rhythm. Sometimes, it is even necessary to stop the production line or wait for a production gap, which leads to inconvenience, low efficiency and a certain impact on the production process.
[0005] To avoid large equipment occupying production line resources or affecting production rhythm, some companies have opted for manual screening of samples using hand sieves. While this method is simple to operate, it has obvious limitations: the sieves are of a single specification, making effective multi-stage screening impossible; their open structure and poor sealing lead to dust generation during screening; and the process is labor-intensive and inefficient, failing to meet the actual needs of efficient and standardized quality inspection.
[0006] This application is submitted to address the above issues. Utility Model Content
[0007] In view of the existing large-scale leaf vibrating sorting screen equipment, which is bulky, complex in structure, expensive, and lacks portability, making it difficult to meet the needs of tobacco quality inspection for small-batch, multi-stage screening, high efficiency, and dust-proof screening, and the low efficiency, high labor intensity, and dust pollution problems of existing manual screening methods, the purpose of this utility model is to provide a compact, easy-to-move, and simple-to-operate tobacco dust-proof screening device. It has a multi-stage detachable screen plate combination to achieve efficient and fine screening; at the same time, through the sealed structure design, it effectively prevents the dispersion of tobacco leaf fragments and dust during screening, improving the quality inspection environment; and it is equipped with mobile brake wheels and handles for convenient on-site rapid deployment and transportation, meeting the flexible screening needs of small batch samples, and improving the convenience and environmental friendliness of tobacco quality inspection.
[0008] The present invention adopts the following technical solution:
[0009] A mobile tobacco leaf dust-proof screening device is provided, the device comprising:
[0010] The screening shell 1 has at least two detachable screen discs 2, 3, 4, and 5 arranged from top to bottom according to the aperture size from large to small inside it;
[0011] A transparent cover 6 is placed on top of the sieve housing to add tobacco leaf samples to the sieve tray and prevent dust from escaping.
[0012] Dustproof door 7 is installed at the side opening of screening housing 1 to seal the screening space and facilitate the removal of the screen plate;
[0013] Collection box 8 is located at the bottom of the screening shell and is used to collect the debris, dust and sand that fall during the screening process;
[0014] The brake wheel 9 is installed at the bottom of the collection box 8 and has a locking function, which is used to fix the position of the device during movement and operation.
[0015] Preferably, the sieve discs 2, 3, 4, and 5 are provided with flange structures on their outer edges for installation, which cooperate with the guide rails or support frames provided on the inner wall of the sieve housing 1 to form a detachable connection.
[0016] Preferably, the area in the screening housing 1 and / or dustproof door 7 facing the screening disc is provided with a transparent observation plate to facilitate observation of the screening status of the tobacco leaves during the screening process.
[0017] Preferably, the transparent device cover 6, the collection box 8, and the dustproof door 7 are detachably installed on the top opening, bottom opening, and side opening of the screening housing 1 through a snap-fit structure, respectively. After installation, they together with the screening housing 1 form a sealed box structure to prevent dust leakage during the screening process.
[0018] Preferably, the screening housing 1 is provided with a first handle 10 on its side wall for easy gripping and handling.
[0019] Preferably, the top of the transparent device cover 6 is provided with a second handle 11, and the side wall of the collection box is provided with a third handle 12, for easy handling and operation.
[0020] Preferably, the sieve discs 2, 3, 4, and 5 are arranged vertically and correspondingly positioned above the collection box 8, so that the sieved debris, dust, and sand can fall directly into the collection box.
[0021] The beneficial effects of this utility model are:
[0022] This utility model achieves efficient and precise screening of tobacco leaf samples by combining a compact screening shell with a multi-stage detachable sieve disc, meeting the sorting requirements of tobacco leaves of different sizes during the quality inspection process.
[0023] The transparent cover and dustproof door, along with the transparent observation panel, allow operators to observe the screening status in real time, improving the convenience and accuracy of operation.
[0024] The collection box and the screening shell are connected by a snap-fit detachable connection, which is convenient for cleaning and maintenance. At the same time, the sealed box structure effectively prevents the scattering of fragments, dust and sand generated during the screening process, improves the quality inspection environment, and reduces environmental pollution and health risks to operators.
[0025] The brake wheel has a locking function, and the design with multiple handles makes the device easy to move and quickly deploy on site, greatly improving the flexibility and applicability of the screening device and meeting the needs of small-batch, decentralized quality inspection. The whole device does not require electric drive, has a simple structure, is safe to operate, reduces maintenance costs and the threshold for use, is suitable for a variety of working environments, and improves the efficiency and quality control level of tobacco leaf screening. Attached Figure Description
[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0027] Figure 1 This is a three-dimensional structural diagram of the movable tobacco dust-proof screening device of this utility model;
[0028] Figure 2 This is an exploded view of the portable tobacco dust-proof screening device of this utility model;
[0029] Reference numerals: 1. Screening shell; 2, 3, 4, 5. Screening disc; 6. Transparent device cover; 7. Dustproof door; 8. Collection box; 9. Brake wheel; 10. First handle; 11. Second handle; 12. Third handle. Detailed Implementation
[0030] The present invention will be further described in detail below with reference to embodiments, but this is not intended to limit the present invention. Any modifications or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the field or in accordance with the product manual.
[0031] Example 1
[0032] like Figure 1-2 As shown in the figure, the movable tobacco dust-proof screening device provided in this embodiment mainly includes a screening shell 1, multiple screening discs 2, 3, 4, 5, a transparent device cover 6, a dustproof door 7, a collection box 8, a brake wheel 9, and multiple handles 10, 11, 12, etc.
[0033] The screening housing 1 is an integral box structure with a top opening, a side opening and a bottom opening. Inside the box, at least two or more detachable screen discs 2, 3, 4 and 5 are arranged from top to bottom according to the aperture size from large to small.
[0034] In a preferred embodiment, four detachable screen discs are provided, each corresponding to a different aperture size, with the aperture size decreasing sequentially from top to bottom to achieve multi-stage particle separation and sieving. Each screen disc has a flange structure on its outer edge, which is a thickened annular edge used for support and positioning during installation.
[0035] Specifically, the inner wall of the screening housing 1 is provided with several linear guide rails 13 on both the left and right sides to support and position each screen disc. Each guide rail extends horizontally along the front-to-back direction of the screening housing and is arranged in pairs from top to bottom, corresponding one-to-one with the installation height of each screen disc. The flange structure on the outer edge of the screen disc can slide into the guide rail of the corresponding height to form a reliable sliding insert support connection, which not only ensures the stability of the screen disc during the screening process, but also facilitates its quick disassembly and cleaning.
[0036] As an alternative structure, the left and right sides of the inner wall of the screening housing 1 can also be configured as stepped brackets, with each step corresponding to the placement height of a screen disc, and the screen discs are positioned by means of groove limiting. Users can choose the arrangement of guide rails or brackets according to screening requirements.
[0037] The transparent cover 6 is detachably installed at the top opening of the screening housing 1 via a snap-fit structure. Users can add tobacco leaf samples to the screening tray through this cover, while effectively preventing dust generated during the screening process from escaping. The dustproof door 7 is also installed at the side opening of the screening housing 1 via a snap-fit structure, used to seal the screening space and facilitate the disassembly and assembly of the screening tray.
[0038] In a preferred embodiment, the screening housing 1 and the dustproof door 7 are made of transparent sheet material. Combined with the transparent device cover 6, the entire device forms an integrated transparent box structure, facilitating direct observation of the screening process from the outside and improving operational convenience and visual intuitiveness. The areas in the screening housing 1 and the dustproof door 7 facing the screening disc are made of fully transparent material or equipped with a transparent observation plate, further enhancing the visualization effect.
[0039] In addition, to enable intuitive observation of the distribution of tobacco leaves at each grade during the screening process, the side edges of the screens 2, 3, 4, and 5 are preferably made of transparent material, which facilitates observation of the distribution and movement of tobacco leaves inside the screens from the outside of the screening housing through a transparent door panel or observation window, thereby further improving operational visibility and work efficiency.
[0040] The collection box 8 is located at the bottom of the screening shell 1 and is used to receive the debris, dust and sand that fall during the screening process. It has a second handle 11 on the top and a third handle 12 on the side wall for easy disassembly, handling and cleaning.
[0041] The device is equipped with brake wheels 9 at the bottom. In a preferred embodiment, these brake wheels 9 employ a locking swivel caster structure, providing 360° free rotation and independent mechanical locking. Commercially available industrial-grade swivel casters are preferred, equipped with a one-button foot-operated locking device for quick and easy wheel locking and unlocking by the operator. This design ensures the device remains securely positioned after being moved to a designated location, effectively preventing accidental slippage during screening operations and improving the stability and safety of equipment operation. Four brake wheels 9 can be installed at the four corners of the bottom of the collection box 8, ensuring balanced support and stability of the device, facilitating flexible movement and precise positioning.
[0042] The screening shell 1 is provided with a first handle 10 on its side wall, which makes it easy for operators to grasp and move the equipment during movement, loading and unloading or deployment.
[0043] The entire device adopts a sealed enclosure design. The transparent device cover 6, dustproof door 7, and collection box 8 are sealed to the top, side, and bottom openings of the screening housing 1 via a snap-fit structure, forming a closed space that effectively suppresses dust leakage, improves the working environment, and protects the health of operators. The device has a simple structure and is easy to install, making it suitable for rapid, efficient, and dust-free screening of small batches of tobacco leaf samples. It is particularly suitable for on-site screening applications in re-drying plants or tobacco leaf quality inspection processes.
[0044] To ensure structural stability during normal screening operations, the screen disc is securely connected to guide rails mounted on the inner wall of the screening housing via its outer flange. These guide rails are firmly fixed to the inner wall of the housing, ensuring a robust and reliable connection. The entire screening housing and its components are rationally designed and precisely fitted, forming a robust overall box structure. Actual use and testing have shown that under moderate and rhythmically applied manual vibration, the device will not experience loosening, detachment, deformation, or disintegration, fully meeting the structural strength and safety requirements of daily operation. This stable design effectively avoids the risk of equipment instability caused by vibration-assisted screening operations, ensuring a smooth and safe screening process and improving the device's service life and reliability.
[0045] In use, first open the transparent cover 6 and evenly add the tobacco sample to be screened into the sieve tray 2 with the largest aperture at the top. Then close the transparent cover 6 and the dustproof door 7 to ensure that the screening space is sealed and effectively prevent dust from leaking out.
[0046] During the sieving process, the operator holds the first handle 10 located on the side wall of the sieving housing 1 with both hands and gently shakes (moves) it at a short frequency in the back-and-forth direction. This vibration assists in the stratified movement and particle separation of the tobacco leaf sample between the sieve discs. The tobacco leaves and their debris pass sequentially through sieve discs 2, 3, 4, and 5, whose apertures gradually decrease. Larger particles are blocked by the upper sieve discs, while smaller particles and debris continue to pass through the lower sieve discs, achieving multi-stage fine sieving.
[0047] During the screening process, tobacco leaves and entrained dust fall naturally through the screen holes under gravity. When the screen disc vibrates or oscillates, the dust separates more rapidly due to inertia, improving screening efficiency. Screened dust, sand, and other debris fall directly into the collection box 8 at the bottom for easy cleaning and subsequent processing. A transparent observation panel allows operators to monitor the screening status in real time and adjust operating parameters promptly to ensure the screening effect meets quality inspection requirements. The screen disc has a detachable structure, allowing for the replacement of screen discs with different apertures to achieve flexible multi-stage screening functionality.
[0048] The device adopts a closed structure design. The transparent device cover 6, dustproof door 7 and collection box 8 are firmly sealed by a buckle structure, which greatly suppresses the dispersion of tobacco leaf fragments and dust, and ensures the cleanliness of the site environment and the health of the operators.
[0049] The device is equipped with four locking omnidirectional brake wheels at the bottom, supporting flexible movement and stable positioning. The brake wheels have 360-degree rotation capability and mechanical locking function. The operator can quickly lock or unlock the device with a one-button foot pedal, ensuring the stability and safety of the device during screening operations.
[0050] The integrated screening device requires no electricity, has a simple structure, and combines manual vibration assistance with gravity to achieve efficient multi-stage grading and screening. This design reduces maintenance and operating costs, making it particularly suitable for the quality inspection needs of small to medium batches of tobacco leaf samples, ensuring both screening accuracy and operational safety and convenience.
[0051] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this application; the dimensions described in the drawings and embodiments are not related to the specific physical object and are not used to limit the protection scope of this application. The physical dimensions can be selected and changed according to actual needs.
Claims
1. A mobile tobacco leaf dust-proof screening device, characterized in that, The device includes: The screening shell (1) has at least two detachable screen discs (2, 3, 4, 5) arranged from top to bottom in descending order of aperture size inside; A transparent device cover (6) is placed on top of the sieve housing to add tobacco leaf samples to the sieve tray and prevent dust from escaping. Dustproof door (7) is installed at the side opening of the screening housing (1) to seal the screening space and facilitate the removal of the screen plate; A collection box (8) is set at the bottom of the screening shell to collect the debris, dust and sand that fall during the screening process; The brake wheel (9) is installed at the bottom of the collection box (8) and has a locking function for moving the device and fixing its position during operation.
2. The mobile tobacco dust-proof screening device according to claim 1, characterized in that, The sieve discs (2, 3, 4, 5) have flange structures on their outer edges for installation, which cooperate with the guide rails or support frames provided on the inner wall of the sieve housing (1) to form a detachable connection.
3. The mobile tobacco dust-proof screening device according to claim 1 or 2, characterized in that, The screening housing (1) and / or dustproof door (7) are provided with a transparent observation plate in the area opposite the screening tray, so as to observe the screening status of tobacco leaves during the screening process.
4. The mobile tobacco dust-proof screening device according to claim 1, characterized in that, The transparent device cover (6), collection box (8) and dustproof door (7) are detachably installed on the top opening, bottom opening and side opening of the screening housing (1) through a snap-fit structure. After installation, they together with the screening housing (1) form a sealed box structure to prevent dust leakage during the screening process.
5. The movable tobacco leaf dust-proof screening device according to any one of claims 1 to 4, characterized in that, The screening housing (1) has a first handle (10) on its side wall for easy gripping and handling.
6. The movable tobacco leaf dust-proof screening device according to any one of claims 1 to 5, characterized in that, The transparent device cover (6) is provided with a second handle (11) on the top and a third handle (12) on the side wall of the collection box for easy handling and operation.
7. The movable tobacco leaf dust-proof screening device according to any one of claims 1 to 6, characterized in that, The sieve discs (2, 3, 4, 5) are arranged vertically and positioned above the collection box (8), allowing the sieved debris, dust, and sand to fall directly into the collection box.