A multi-stage tobacco stem screening mechanism

Abstract

This utility model discloses a multi-stage tobacco stem screening mechanism, including a base plate, a screening box connected to the outer surface of the base plate, a screening component inside the screening box, two first sliding grooves inside the screening box, a first slider slidably connected inside each first sliding groove, a scraper connected to the outer surface of the two first sliders, an operating rod connected to the outer surface of the scraper, and a first support column connected to the outer surface of the base plate. This device utilizes an auger to transport tobacco stems through a conveying cylinder, and a control valve to control the amount of tobacco stems conveyed in the discharge pipe. The screening process can be stopped at any time via the control valve, solving the problem of reduced screening efficiency due to too many or too few tobacco stems being screened. The scraper helps workers scrape the screened tobacco stems out of the screening box.

Description

Technical Field

[0001] This utility model relates to the field of tobacco stem processing technology, and in particular to a multi-stage screening mechanism for tobacco stems. Background Technology

[0002] Tobacco stems are the coarse, hard veins of tobacco leaves, containing a significant amount of cellulose and mucilage, accounting for approximately 25% to 30% of the tobacco leaf composition. During cigarette production, tobacco stems are often discarded as a byproduct of leaf threshing and re-drying, causing environmental pollution and hindering resource utilization. In my country, however, they are typically processed into high-purity, high-filling expanded tobacco shreds using appropriate processing techniques and added to cigarette formulations. This process improves the flavor of cigarettes, reduces tar content and raw material costs, balances smoke, regulates cigarette combustibility, and enhances economic efficiency. Before processing, tobacco stems need to be screened to facilitate subsequent sorting and processing.

[0003] However, existing multi-stage tobacco stem screening devices often add too many or too few tobacco stems at once during screening. When too many tobacco stems are screened, the screening effect may be reduced. Therefore, we propose a multi-stage tobacco stem screening mechanism to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage tobacco stem screening mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-stage tobacco stem screening mechanism includes a base plate, a screening box connected to the outer surface of the base plate, a screening component inside the screening box, two first sliding grooves inside the screening box, a first slider slidably connected inside each first sliding groove, a scraper connected to the outer surface of the two first sliders, an operating rod connected to the outer surface of the scraper, a first support column connected to the outer surface of the base plate, a conveying mechanism connected to the outer surface of the first support column, a vibration mechanism inside the screening box, and a fixing plate connected to the inside of the screening box.

[0007] In a further embodiment, the screening component includes two second slid grooves, each of which is slidably connected to a second slider, and the outer surfaces of the two second sliders are connected to a primary sieve plate.

[0008] In a further embodiment, the conveying mechanism includes a conveying cylinder, a motor is mounted on the outer surface of the conveying cylinder, a bearing is embedded in the inner wall of the conveying cylinder, a rotating rod is connected to the output end of the motor, one end of the rotating rod passes through the conveying cylinder and extends into the interior of the conveying cylinder, one end of the rotating rod is connected to the inner ring of the bearing, an auger is connected to the outer surface of the rotating rod, a feed pipe is connected to the outer surface of the conveying cylinder, and a discharge pipe is connected to the outer surface of the conveying cylinder.

[0009] In a further embodiment, the bottom end of the discharge pipe is connected to the interior of the screening box, and a control valve is provided inside the discharge pipe.

[0010] In a further embodiment, a second support column is connected to the outer surface of the conveying cylinder, and the outer surface of the second support column is connected to the outer surface of the screening box.

[0011] In a further embodiment, the vibration mechanism includes a vibrator, the output end of which is connected to a secondary sieve plate, and the outer surface of the secondary sieve plate is connected to four elastic elements, the bottom end of each elastic element being connected to the interior of the screening box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device utilizes an auger to transport tobacco stems through a conveyor cylinder. A control valve controls the amount of tobacco stems conveyed in the discharge pipe and allows the screening process to be stopped at any time. This solves the problem of reduced screening efficiency caused by too many or too few tobacco stems being screened. A scraper helps workers scrape the screened tobacco stems out of the screening box. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a multi-stage tobacco stem screening component.

[0015] Figure 2 This is a cross-sectional view of a multi-stage tobacco stem screening device.

[0016] Figure 3 This is a side sectional view of the screening box in the multi-stage tobacco stem screening unit.

[0017] Figure 4 This is a top sectional view of the screening box in the multi-stage tobacco stem screening unit.

[0018] In the diagram: 1. Base plate; 2. Screening box; 3. Screening component; 4. First chute; 5. First slider; 6. Scraper; 7. Operating lever; 8. First support column; 9. Conveying mechanism; 10. Vibration mechanism; 11. Fixed plate; 301. Second chute; 302. Second slider; 303. Primary screen plate; 901. Conveying cylinder; 902. Motor; 903. Bearing; 904. Rotating rod; 905. Feed pipe; 906. Discharge pipe; 907. Control valve; 908. Second support column; 909. Screwdriver; 1001. Vibrator; 1002. Secondary screen plate; 1003. Elastic component. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4In this utility model, a multi-stage tobacco stem screening mechanism includes a base plate 1, a screening box 2 connected to the outer surface of the base plate 1, a screening component 3 inside the screening box 2, and a screening component 3 including two second sliding grooves 301. A second slider 302 is slidably connected inside each second sliding groove 301. The outer surfaces of the two second sliders 302 are connected to a primary screen plate 303. The primary screen plate 303 can block large tobacco stems, and the second sliders 302 can help workers remove the primary screen plate 303 from the second sliding grooves 301.

[0023] The screening box 2 has two first chutes 4 inside, and a first slider 5 is slidably connected inside each first chutes 4. The outer surfaces of the two first sliders 5 are connected to a scraper 6, and the outer surface of the scraper 6 is connected to an operating rod 7. The outer surface of the base plate 1 is connected to a first support column 8, and the outer surface of the first support column 8 is connected to a conveying mechanism 9. The conveying mechanism 9 includes a conveying cylinder 901, a motor 902 is mounted on the outer surface of the conveying cylinder 901, and a bearing 903 is embedded in the inner wall of the conveying cylinder 901. The output end of the motor 902 is connected to a rotating rod 904, and one end of the rotating rod 904 passes through the conveying cylinder 901 and extends outward. Inside the conveying cylinder 901, one end of the rotating rod 904 is connected to the inner ring of the bearing 903. The outer surface of the rotating rod 904 is connected to the auger 909. The outer surface of the conveying cylinder 901 is connected to the feed pipe 905. The outer surface of the conveying cylinder 901 is connected to the discharge pipe 906. The bottom end of the discharge pipe 906 is connected to the inside of the screening box 2. The discharge pipe 906 is equipped with a control valve 907. The outer surface of the conveying cylinder 901 is connected to the second support column 908. The outer surface of the second support column 908 is connected to the outer surface of the screening box 2. The control valve 907 can help the group workers control the amount of tobacco stems conveyed.

[0024] The screening box 2 is equipped with a vibration mechanism 10, which includes a vibrator 1001. The output end of the vibrator 1001 is connected to a secondary screen plate 1002. Four elastic elements 1003 are connected to the outer surface of the secondary screen plate 1002. The bottom end of each elastic element 1003 is connected to the inside of the screening box 2. A fixing plate 11 is connected to the inside of the screening box 2. The elastic element 1003 can be any object with elasticity, such as a spring or an elastic sheet.

[0025] The working principle of this utility model is as follows:

[0026] When using this device, firstly, the primary screen plate 303 is placed in the second chute 301 via the second slider 302. Next, the scraper 6 is placed into the first chute 4 via the first slider 5 using the operating lever 7. Then, the tobacco stems to be screened are poured into the conveying cylinder 901 through the feed pipe 905. Next, the motor 902 is started, which drives the rotating rod 904 to rotate. The rotating rod 904 then drives the auger 909 to rotate. As the auger 909 rotates, it transfers the tobacco stems from the conveying cylinder 901 to the discharge pipe 906. Then, the control valve 907, as needed, discharges the tobacco stems through the discharge pipe 906 onto the primary screen plate 303. The primary screen plate 303 then screens the tobacco stems... Larger tobacco stems are blocked, and the remaining tobacco stems continue to fall onto the secondary sieve plate 1002. At this time, the vibrator 1001 is activated, which drives the secondary sieve plate 1002 to vibrate. The elastic element 1003 supports and assists the vibration of the secondary sieve plate 1002, thereby shaking down the smaller fragments in the remaining tobacco stems. Finally, by moving the operating rod 7 outward, the scraper 6 is moved, thereby scraping the fragments out of the screening box 2. The scraper 6 can also be removed and placed on the secondary sieve plate 1002 to scrape the tobacco stems off the secondary sieve plate 1002. When removing the tobacco stems from the primary sieve plate 303, simply pull the primary sieve plate 303 outward.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-stage tobacco stem screening mechanism, characterized in that: Includes a base plate (1), the outer surface of which is connected to a screening box (2), the screening box (2) is provided with a screening component (3) inside, the screening box (2) has two first sliding grooves (4) inside, each first sliding groove (4) is slidably connected to a first slider (5), the outer surfaces of the two first sliders (5) are connected to a scraper (6), the outer surface of the scraper (6) is connected to an operating rod (7), the outer surface of the base plate (1) is connected to a first support column (8), the outer surface of the first support column (8) is connected to a conveying mechanism (9), the screening box (2) is provided with a vibration mechanism (10) inside, and a fixing plate (11) is connected to the inside of the screening box (2).

2. The multi-stage tobacco stem screening mechanism according to claim 1, characterized in that: The screening component (3) includes two second slide grooves (301), and a second slider (302) is slidably connected inside each second slide groove (301). The outer surfaces of the two second sliders (302) are connected to a primary screen plate (303).

3. The multi-stage tobacco stem screening mechanism according to claim 1, characterized in that: The conveying mechanism (9) includes a conveying cylinder (901), a motor (902) is mounted on the outer surface of the conveying cylinder (901), a bearing (903) is embedded in the inner wall of the conveying cylinder (901), a rotating rod (904) is connected to the output end of the motor (902), one end of the rotating rod (904) passes through the conveying cylinder (901) and extends into the interior of the conveying cylinder (901), one end of the rotating rod (904) is connected to the inner ring of the bearing (903), an auger (909) is connected to the outer surface of the rotating rod (904), a feed pipe (905) is connected to the outer surface of the conveying cylinder (901), and a discharge pipe (906) is connected to the outer surface of the conveying cylinder (901).

4. The multi-stage tobacco stem screening mechanism according to claim 3, characterized in that: The bottom end of the discharge pipe (906) is connected to the interior of the screening box (2), and a control valve (907) is provided inside the discharge pipe (906).

5. The multi-stage tobacco stem screening mechanism according to claim 3, characterized in that: The outer surface of the conveying cylinder (901) is connected to a second support column (908), and the outer surface of the second support column (908) is connected to the outer surface of the screening box (2).

6. The multi-stage tobacco stem screening mechanism according to claim 1, characterized in that: The vibration mechanism (10) includes a vibrator (1001), the output end of which is connected to a secondary sieve plate (1002), and the outer surface of the secondary sieve plate (1002) is connected to four elastic elements (1003), the bottom end of each elastic element (1003) being connected to the interior of the screening box (2).

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