A feeding device for a cigarette making machine
By using a rotating shaft and scraper in the cigarette machine feeding device, the problem of the opening and closing of the tobacco feeding device affecting the pressure stability of the pneumatic tobacco conveying equipment was solved, thus achieving airtightness in tobacco conveying and efficient use of energy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING CHINA TOBACCO IND CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-29
AI Technical Summary
The existing tobacco feeding device affects the pressure stability of the pneumatic tobacco feeding equipment during the opening and closing process, resulting in energy waste.
Design a feeding device for a cigarette machine. By setting a rotating shaft and scraper in the feeding channel, the scraper slides in a sealed manner with the inner wall of the feeding chamber, ensuring that at any time the rotating shaft is in motion, at least two scrapers separate the feeding port and the discharging port, maintaining airtightness and preventing air leakage.
It achieves airtightness during the tobacco conveying process, avoids the impact of air leakage on tobacco conveying, and improves the pressure stability and energy utilization efficiency of the pneumatic tobacco conveying equipment.
Smart Images
Figure CN224291263U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of cigarette production equipment, and in particular to a feeding device for a cigarette machine. Background Technology
[0002] The pneumatic tobacco feeding system in a cigarette factory connects the tobacco processing, packaging, and power workshops. The power workshop provides the necessary power for tobacco feeding, the tobacco processing workshop provides finished tobacco for the tobacco feeding process, and the packaging workshop receives the fed tobacco through the pneumatic feeding equipment connected to the tobacco processing workshop to complete cigarette production, meeting the cigarette rolling machine's requirements for the purity of the incoming tobacco. The integrity of the overall pipeline structure and the rationality of its layout are crucial to the successful transport of the tobacco.
[0003] Existing tobacco feeding devices typically require opening and closing doors (or valves) to feed the tobacco, which affects the pressure stability of the pneumatic tobacco feeding equipment and results in energy waste. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a feeding device for cigarette machines, which solves the problem that the opening and closing of the tobacco feeding device in the prior art affects the pressure stability of the pneumatic feeding equipment and causes energy waste.
[0005] This utility model solves the above-mentioned technical problems through the following technical means: a feeding device for a cigarette machine, including a feeding channel through which materials can pass, a rotating shaft and a feeding chamber corresponding to the rotation space of the rotating shaft are provided in the feeding channel, a feeding port is provided at one end of the feeding chamber and a discharging port is provided at the other end, a plurality of scraper plates are provided circumferentially on the rotating shaft, and the ends of the scraper plates are sealed and slidingly engaged with the inner wall of the feeding chamber; at any time when the rotating shaft rotates, at least two of the scraper plates separate the feeding port from the discharging port.
[0006] Optionally, the number of scraper blades is at least four, and the opening areas of both the inlet and outlet are less than one-quarter of the circumference of the rotating shaft. This ensures that at any given moment during shaft rotation, at least two scraper blades separate the inlet and outlet, thereby maintaining the airtightness of the front or rear feeding device and preventing air leakage from affecting the normal transport of tobacco.
[0007] Optionally, on the opposite side of the rotation direction of the rotating shaft, the end of the scraper is also provided with comb teeth at an angle.
[0008] Optionally, the height of the comb teeth is one-third to one-half the length of the scraper. This is used to loosen clumps of tobacco.
[0009] Optionally, the end of the scraper is a fan-shaped arc segment corresponding to the curvature of the feed chamber. "Surface contact" sealing ensures a tight seal; the sealing effect is even better when there are multiple "surface contacts" in the non-open area of the feed chamber.
[0010] Optionally, both the feed inlet and the discharge outlet are provided with connecting parts for connecting to an external tobacco conveying device.
[0011] Optionally, the external tobacco conveying device is a tobacco conveying device with positive or negative pressure.
[0012] Optionally, nozzles for providing a continuous positive pressure airflow are symmetrically provided on the inner wall of the feed chamber near the feed inlet, flush with the inner wall.
[0013] The beneficial effects of this utility model are:
[0014] This utility model uses an inlet, an inlet chamber, and an outlet to form a feeding channel. Multiple scraper blades are arranged circumferentially on the rotating shaft, and the ends of the scraper blades are sealed and slidingly fitted with the inner wall of the inlet chamber. At any time the rotating shaft rotates, at least two scraper blades separate the inlet and outlet, thereby maintaining the airtightness of the front or rear feeding device and preventing the impact of air leakage caused by repeated opening and closing of the device on the normal conveying of tobacco. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a cross-sectional schematic diagram of the present invention;
[0017] Figure 3 This is a schematic diagram of the internal structure of the feeding chamber of this utility model.
[0018] Among them, 1-feeding channel, 11-rotating shaft, 111-scraper, 112-comb teeth, 12-feeding chamber, 121-feeding port, 122-discharge port, 13-connecting part. Detailed Implementation
[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the figures for those skilled in the art.
[0020] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.
[0021] like Figures 1-3 As shown, this utility model discloses a feeding device for a cigarette machine, including a feeding channel 1 through which materials can pass, such as a common hopper structure or pipe structure. The feeding channel 1 contains a rotating shaft 11 and a feeding chamber 12 corresponding to the rotation space of the rotating shaft 11. In this embodiment, the feeding chamber 12 is a horizontally arranged hollow cylindrical structure. One end of the feeding chamber 12 has a feeding port 121, and the other end has a discharging port 122. The feeding port 121, the feeding chamber 12, and the discharging port 122 constitute the feeding channel 1 in this embodiment. Similarly, the feeding channel 1 can also be used for discharging. The rotating shaft 11 is usually driven by a motor as a power source, and transmission is achieved through a reducer, gears, belts, etc., which will not be described in detail here.
[0022] In this embodiment, a plurality of scraper blades 111 are detachably connected circumferentially to the rotating shaft 11. Specifically, the rotating shaft is provided with six evenly distributed inclined mounting seats in the circumferential direction. The scraper blades are fixed to the mounting seats by screws, which facilitates the maintenance of the scraper blades 111. At the same time, the ends of the scraper blades 111 are in a sealing sliding fit with the inner wall of the feeding chamber 12. For example, the ends of the scraper blades 111 are set with zero clearance from the inner wall of the feeding chamber 12. Ideally, the rotation axis lines of the rotating shaft 11 and the scraper blades 111 should be concentric with the axis line of the feeding chamber 12, or a small positive tolerance clearance should be reserved to avoid machining and installation errors of the rotating shaft 11, the scraper blades 111, and the feeding chamber 12. At any given time, there are at least two scraper plates 111 separating the feed inlet 121 from the discharge outlet 122. When the rotating shaft 11 rotates, the scraper plates 111 repeatedly scrape the tobacco shreds at intervals, evenly scraping them from the feed chamber 12 to the discharge outlet 122. When the scraper plates are evenly distributed along the rotating shaft 11, uniform feeding of the entire feeding device can be achieved, while maintaining the sealing performance. In particular, the sealing performance is guaranteed when there is a combination of multiple scraper plates 111 and the feed chamber 12.
[0023] In this embodiment, the number of scraper blades 111 is at least four, preferably six to eight. They can be arranged perpendicular to the tangent direction of the rotating shaft 11 or inclined to the tangent direction of the rotating shaft 11. The opening areas of the feed inlet 121 and the discharge outlet 122 are both less than one-quarter of the circumference of the rotating shaft 11. At any moment when the rotating shaft 11 rotates, there are at least two scraper blades 111 that separate the feed inlet 121 and the discharge outlet 122, thereby maintaining the airtightness of the front or rear feeding device and preventing the normal conveying of tobacco shreds due to air leakage.
[0024] In this embodiment, to further enhance the uniformity and looseness of the feeding of tobacco shreds by the feeding device, and to better transport the tobacco shreds within the tobacco pneumatic conveying device, the end of the scraper plate 111 on the opposite side of the rotation direction of the rotating shaft 11 is also provided with inclined comb teeth 112; for example, such as Figure 2 As shown, the scraper plate 111 rotates counterclockwise, and the comb teeth 112 are inclined in the counterclockwise direction at the end of the scraper plate 111, forming a large included angle of about 60°. When the comb teeth 112 rotate with the rotating shaft 11, they loosen the clumps of tobacco. The clumps of tobacco are intercepted by the comb teeth 112 and repeatedly loosened between the comb teeth 112 and the scraper plate 111, and then fed evenly and periodically with the scraper plate 111.
[0025] Specifically, the height of the comb teeth 112 is one-third to one-half the height of the scraper plate 111. The comb teeth 112 are continuous isosceles triangular shapes or other common comb teeth, rakes, and other structures that play a loosening role. The surface is as smooth as possible or has an anti-sticking coating so that the comb teeth 112 avoid tobacco residue when loosening tobacco.
[0026] In this embodiment, to enhance the sealing performance of the scraper 111, the end of the scraper 111 is a fan-shaped arc segment corresponding to the curvature of the feed chamber 12. On the one hand, the "surface contact" seal of the fan-shaped arc segment can ensure the sealing performance, and the sealing effect is better when there are multiple "surface contacts" in the non-open area of the feed chamber. On the other hand, it also extends the life of the scraper 111 as much as possible after wear occurs.
[0027] In this embodiment, both the feed inlet 121 and the discharge outlet 122 are provided with a connecting part 13 for connecting with an external tobacco conveying device. The connecting part 13 is a structure such as a threaded hole or a flange for connecting with the external tobacco conveying device. The external tobacco conveying device is a tobacco conveying device with positive or negative pressure, such as a tobacco screening channel used in a cigarette machine, or a tobacco conveying belt or negative pressure suction system.
[0028] In some other embodiments, to further enhance the loosening performance of the feeding device on clumps of tobacco, nozzles flush with the inner wall of the feeding chamber 12 near the feeding inlet are symmetrically provided to provide a continuous positive pressure airflow. The direction of the positive pressure airflow ejected from the nozzles can be the same as the arrangement direction of the comb teeth, so that the clumps of tobacco entering the feeding chamber 12 are mechanically loosened by the comb teeth 112, and the loosening effect is enhanced by the wind disturbance. In addition, when the comb teeth 112 rotate in the direction of the positive pressure airflow, the positive pressure airflow can also clean the surface of the comb teeth 112 to avoid tobacco residue.
[0029] The working principle of this utility model is as follows:
[0030] When the feeding device for the cigarette machine of this utility model is in use, the inlet 121 and the outlet 122 can be connected to the front and rear external tobacco conveying devices, respectively. When the rotating shaft 11 is started, the tobacco falls from the inlet 121 and falls between two adjacent scraper plates 111. As the rotating shaft 11 rotates, when the tobacco between the two adjacent scraper plates 111 rotates to the side of the outlet 122, it is discharged by gravity or by the negative pressure wind force of the rear tobacco conveying device.
[0031] During this process, the scraper plates 111 are evenly arranged, ensuring that every two adjacent scraper plates 111 feed the tobacco evenly and periodically. At any given moment during the rotation of the shaft 11, at least two scraper plates 111 separate the feed inlet 121 from the discharge outlet 122, thereby maintaining the airtightness of the front or rear feeding device and preventing air leakage from affecting the normal transport of tobacco. In addition, clumps of tobacco are intercepted by the comb teeth 112 between the comb teeth 112 and the scraper plates 111, and are loosened as the comb teeth 112 rotates. The arrangement of the comb teeth 112 and the nozzles further enhances the loosening of the fed tobacco, thereby improving the uniformity of feeding.
[0032] 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 preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.
Claims
1. A feeding device for a cigarette rolling machine, characterized in that, It includes a feeding channel (1) through which materials can pass. The feeding channel (1) is provided with a rotating shaft (11) and a feeding chamber (12) corresponding to the rotation space of the rotating shaft (11). One end of the feeding chamber (12) is provided with a feeding port (121) and the other end is provided with a discharging port (122). The rotating shaft (11) is provided with a plurality of scraper blades (111) in the circumferential direction. The end of the scraper blades (111) is sealed and slidably engaged with the inner wall of the feeding chamber (12). At any time when the rotating shaft (11) rotates, there are at least two scraper blades (111) that separate the feeding port (121) from the discharging port (122).
2. The feeding device for a cigarette machine according to claim 1, characterized in that: The number of scraper blades (111) is at least four, and the opening areas of the feed inlet (121) and the discharge outlet (122) are both less than one-quarter of the circumference of the rotating shaft (11).
3. The feeding device for a cigarette machine according to claim 1, characterized in that: On the opposite side of the rotation direction of the rotating shaft (11), the end of the scraper (111) is also provided with comb teeth (112) at an incline.
4. The feeding device for a cigarette machine according to claim 3, characterized in that: The height of the comb teeth (112) is one-third to one-half the height of the scraper (111).
5. The feeding device for a cigarette machine according to claim 1, characterized in that: The end of the scraper (111) is a fan-shaped arc segment corresponding to the curvature of the feed chamber (12).
6. The feeding device for a cigarette machine according to claim 1, characterized in that: Both the feed inlet (121) and the discharge outlet (122) are provided with a connecting part (13) for connecting with an external tobacco conveying device.
7. The feeding device for a cigarette machine according to claim 6, characterized in that: The external tobacco conveying device is a tobacco conveying device with positive or negative pressure.
8. The feeding device for a cigarette machine according to claim 1, characterized in that: On the inner wall of the feed chamber (12) near the feed inlet, nozzles for providing continuous positive pressure airflow are symmetrically provided and flush with the inner wall.