Vibrating screen
By setting a screen plate and a material leveling mechanism on the vibrating screen, the problem of high tobacco dust content is solved, and loose conveying and efficient screening of tobacco shreds are achieved, improving the consistency of cigarette flavor.
Patent Information
- Application Number
- CN202422894352.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-26
Smart Images
Figure CN223491372U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibrating conveying devices, and in particular to a vibrating screen. Background Technology
[0002] During the tobacco processing, a vibrating conveyor is used to transport the tobacco that has completed the drying and rolling process to downstream equipment. The vibrating conveyor is equipped with a vibrating screen, which not only transports the tobacco but also removes the tobacco dust generated during the drying and rolling process.
[0003] However, currently, tobacco shreds after being screened by vibrating screens often have a high dust content, which leads to uneven flavoring of the cigarettes and a poor consistency in the taste of the tobacco shreds. Utility Model Content
[0004] The purpose of this invention is to solve the technical problem of poor flavor consistency in cigarettes due to the high dust content of tobacco shreds. This invention provides a vibrating screen that can reduce the dust content of tobacco shreds, thereby improving the flavor consistency of cigarettes.
[0005] To solve the above-mentioned technical problems, the present invention provides a vibrating screen mounted on a vibrating conveyor, the vibrating screen comprising:
[0006] The sieve plate is set on the vibrating plate of the vibrating conveyor and can move with the vibrating plate. The sieve plate has multiple sieve holes and two side edges extending along its length.
[0007] The material leveling mechanism is located on the upper surface of the screen plate and protrudes from the upper surface of the screen plate. Two guide surfaces are provided on both sides of the material leveling mechanism. The extension direction of the two guide surfaces is at an angle to the conveying direction of the vibrating screen. Along the conveying direction of the vibrating conveyor, the distance between one guide surface and the side of the screen plate adjacent to it gradually decreases, and the distance between the other guide surface and the other side of the screen plate gradually decreases.
[0008] Optionally, the material leveling mechanism includes two wing plates mirror-arranged along the geometric center line of the screen plate, with the ends of the two wing plates connected near the feed end of the vibrating screen, and the two guide surfaces being the outer surfaces of the two wing plates respectively.
[0009] Optionally, the upper surface of the wing plate and the screen plate form a first included angle, and the distance between the upper surface of the wing plate and the screen plate gradually increases along the conveying direction.
[0010] Optionally, the first included angle is 30 to 45°.
[0011] Optionally, the maximum size of the material leveling mechanism occupies 2 / 3 of the width of the screen plate along the width direction of the screen plate.
[0012] Optionally, the two wing plates are welded together, and the connection between each wing plate and the screen plate is welding or riveting.
[0013] Optionally, two connecting lines are formed at the connection between the two wing plates and the sieve plate, and a second included angle is formed between the two connecting lines, with the second included angle being 45 to 120°.
[0014] Optionally, the material leveling mechanism is located near the feed end of the vibrating conveyor, and along the conveying direction, the material leveling mechanism is located downstream of the feed end.
[0015] Optionally, the wingplate is triangular, and the height of each wingplate gradually decreases from the connection point of the two wingplates to the other end of the two wingplates.
[0016] Optionally, a tail plate is covered above the two wing plates. The tail plate is triangular, and its three sides are connected to the upper edges of the two wing plates and the upper surface of the sieve plate, respectively.
[0017] Compared with the prior art, this utility model has the following beneficial effects:
[0018] The present invention utilizes a sieve plate on the vibrating disc of a vibrating conveyor to remove tobacco dust mixed in with the tobacco shreds. By setting a leveling mechanism on the sieve plate and gradually moving the two sides of the leveling mechanism closer to the sides of the sieve plate along the conveying direction of the tobacco shreds, the tobacco shreds can be guided to both sides of the sieve plate during the conveying process, preventing the tobacco shreds from accumulating in the middle of the sieve plate. This loosens the tobacco shreds, making it easier for the tobacco dust mixed in with the tobacco shreds to separate from the tobacco shreds, thereby better removing the tobacco dust, reducing the dust content of the tobacco shreds, and improving the consistency of the cigarette flavor. Attached Figure Description
[0019] Figure 1 This diagram shows a schematic diagram of a vibrating screen structure provided in an embodiment of the present invention;
[0020] Figure 2 A top view of a vibrating screen according to another embodiment of the present invention is shown;
[0021] Figure 3 It shows Figure 2 Sectional view along line AA.
[0022] Figure label:
[0023] 1. Screen plate, 2. Material leveling mechanism, 3. Wing plate, 4. Tail plate, 5. Connecting line, 6. Side, 7. Head end, 8. Tail end, 9. Folded edge, 10. Screen hole, 11. Feed end, 12. Guide surface. Detailed Implementation
[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0025] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0026] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the 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. Therefore, they should not be construed as limitations on the utility model.
[0027] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0028] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" 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 embodiment based on the specific circumstances.
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0030] Currently, tobacco shreds sieved through a vibrating screen often have a high dust content, which leads to uneven flavoring of the cigarettes and a poor consistency in the tobacco's taste. The applicant's research has found that tobacco shreds entering the vibrating screen tend to accumulate in the middle of the screen (i.e.,...). Figure 2 The middle point in the width direction Y of the vibrating screen, that is Figure 2 (Near the AA line), making it difficult for the tobacco shreds to spread out on the vibrating screen, resulting in poor loosening effect. Consequently, the tobacco dust mixed inside the tobacco shreds cannot be screened out smoothly, leading to an increase in the dust content of the cigarette.
[0031] To solve the above-mentioned technical problems, the present invention provides a vibrating screen mounted on a vibrating conveyor, as shown in the reference. Figure 1 The vibrating screen includes:
[0032] A sieve plate 1 is mounted on the vibrating plate of a vibrating conveyor and vibrates together with the vibrating plate. Specifically, the sieve plate 1 is fixedly connected to the edge of the vibrating plate by bolts; the sieve plate 1 has multiple sieve holes 10 along its length direction ( Figure 1 and Figure 2 The two sides 6 extend from the center X direction;
[0033] The material leveling mechanism 2 is located on the upper surface of the screen plate 1 and protrudes from the upper surface of the screen plate 1. Two guide surfaces 12 are respectively provided on both sides of the material leveling mechanism 2. The extension direction of the two guide surfaces 12 is the same as the conveying direction of the vibrating screen (and the same as the length direction of the vibrating screen, e.g., ...). Figure 1 and Figure 2 The guide surface 12 forms an angle with the X direction; along the conveying direction of the vibrating conveyor, the distance between one guide surface 12 and the side 6 of the adjacent screen plate 1 gradually decreases, and the distance between the other guide surface 12 and the other side 6 of the screen plate 1 gradually decreases.
[0034] By adopting the above technical solution, a sieve plate 1 is set on the vibrating plate of the vibrating conveyor. When the sieve plate 1 vibrates with the vibrating plate, the tobacco dust mixed in with the tobacco can fall onto the sieve plate 1 and pass through the sieve holes 10 into the vibrating plate, which facilitates the recycling of tobacco dust. By setting a leveling mechanism 2 on the sieve plate 1 and making the guide surfaces 12 on both sides of the leveling mechanism 2 gradually approach the side edge 6 of the sieve plate 1 along the conveying direction of the tobacco, the tobacco can be guided to both sides of the sieve plate 1 during the conveying process, preventing the tobacco from accumulating in the middle of the sieve plate 1, making the tobacco loose, and facilitating the separation of tobacco dust mixed in with the tobacco. This allows for better removal of tobacco dust, reduces the dust content of the tobacco, and improves the consistency of the cigarette flavor.
[0035] Furthermore, the material leveling mechanism 2 includes a section along the geometric center line of the sieve plate 1 (e.g., Figure 2 As shown by the AA line in the image, the two wing plates 3 are mirrored. Figure 1 and Figure 2As shown), the point on the geometric center line is along the width direction ( Figure 1 and Figure 2 The distances from the two sides 6 of the screen plate 1 (as shown in the Y direction) are equal. For ease of description, the end of the two wing plates 3 closest to the feed end 11 of the vibrating screen is called the head end 7, and the end of the two wing plates 3 furthest from the feed end 11 is called the tail end 8. The head ends 7 of the two wing plates 3 are connected, and the two guide surfaces 12 are the outer surfaces of the two wing plates 3. Tobacco shreds with a stacking height lower than the height of the wing plates 3 can gradually approach the side 6 of the screen plate 1 along the guide surface 12 under the guidance of the guide plate, so that the height of the tobacco shreds in the middle of the screen plate 1 gradually decreases during the conveying process, thereby making the tobacco shreds on the screen plate 1 gradually thinner and looser, facilitating the falling off of tobacco dust. In addition, the end where the two screen plates 1 are connected is seamless to prevent tobacco shreds or tobacco dust from being stuck between the two screen plates 1 and increasing the resistance to tobacco movement. The two guide surfaces 12 are smoothed to reduce the resistance and wear of the guide surfaces 12 on the tobacco shreds.
[0036] Furthermore, in Figure 2 In the embodiment shown, the wing plate 3 and the upper surface of the sieve plate 1 form a first included angle (e.g., Figure 3 As shown in ∠α), along Figure 2 In the X direction, the distance between the wing plate 3 and the upper surface of the screen plate 1 gradually increases. This allows the tobacco shreds in contact with the guide surface 12 to be lifted during the conveying process and run past the guide surface 12 along the conveying direction, avoiding excessive guidance of the tobacco shreds by the guide plate and preventing excessive tobacco shreds from being guided to both sides of the screen plate 1, resulting in a situation where the sides are high and the middle is low. At the same time, it also reduces the obstruction of the tobacco shreds by the leveling mechanism 2, thus reducing the conveying speed. Specifically, the first included angle is 30-45°. For tobacco shreds with poor looseness, the first included angle can be set to 45° to slow down the conveying speed of the tobacco shreds, allowing the tobacco shreds to stay on the screen plate 1 for a longer time, improving the looseness of the tobacco shreds and reducing the dust content; or multiple leveling mechanisms 2 are arranged at intervals along the conveying direction, and the first angle of the wing plate 3 of each leveling mechanism 2 is set to 30°, which can also prolong the residence time of the tobacco shreds on the screen plate 1.
[0037] Furthermore, along the width direction of the sieve plate 1, the maximum dimension of the material leveling mechanism 2 (e.g.) Figure 1 The dimension D shown in the figure occupies 2 / 3 of the width of the sieve plate 1. The connection points of the two wing plates 3 and the sieve plate 1 form two connecting lines 5, and the two connecting lines 5 form a second included angle (as shown in the figure). Figure 2 (As shown in ∠β), the second included angle is 45° to 120°.
[0038] Furthermore, the two wing plates 3 are welded together, and the connection between each wing plate 3 and the screen plate 1 is by welding or riveting. Specifically, each wing plate 3 has a folded edge 9 near the edge of the screen plate 1, and the folded edge 9 is used for welding or riveting with the screen plate 1.
[0039] Furthermore, such as Figure 2 As shown, the material leveling mechanism 2 is located near the feed end 11 of the vibrating conveyor, and along the conveying direction, the material leveling mechanism 2 is located downstream of the feed end 11, so that the tobacco entering the feed end 11 is loosened by the material leveling mechanism 2 during the conveying process.
[0040] Furthermore, such as Figure 2 As shown, the wingplate 3 is triangular, and the height of each wingplate 3 gradually decreases from the leading end 7 to the trailing end 8. Specifically, the three side lengths of the wingplate 3 are 635mm, 570mm, and 100mm, respectively.
[0041] Furthermore, such as Figure 2 As shown, a tail plate 4 covers the two wing plates 3. The tail plate 4 is triangular, and its three sides are connected to the upper edges of the two wing plates 3 and the upper surface of the screen plate 1, respectively. A closed space is formed between the tail plate 4, the two wing plates 3, and the upper surface of the screen plate 1 to prevent tobacco residue from remaining on the side of the wing plates 3 away from the guide surface 12. The three sides of the tail plate 4 have lengths of 570mm, 570mm, and 1100mm, respectively.
[0042] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.
Claims
1. A vibrating screen, mounted on a vibrating conveyor, characterized in that, The vibrating screen includes: A sieve plate is disposed on the vibrating plate of the vibrating conveyor and can move with the vibrating plate. The sieve plate is provided with multiple sieve holes and two side edges extending along its length. A material leveling mechanism is provided on the upper surface of the screen plate and protrudes from the upper surface of the screen plate. Two guide surfaces are provided on both sides of the material leveling mechanism. The extension direction of the two guide surfaces is at an angle to the conveying direction of the vibrating screen. Along the conveying direction of the vibrating conveyor, the distance between one of the guide surfaces and the side of the screen plate adjacent to it gradually decreases, and the distance between the other guide surface and the other side of the screen plate gradually decreases.
2. The vibrating screen as described in claim 1, characterized in that, The material leveling mechanism includes two wing plates mirror-arranged along the geometric center line of the screen plate. The ends of the two wing plates near the feed end of the vibrating screen are connected, and the two guide surfaces are the outer surfaces of the two wing plates, respectively.
3. The vibrating screen as described in claim 2, characterized in that, The wing plate and the upper surface of the screen plate form a first angle, and the distance between the wing plate and the upper surface of the screen plate gradually increases along the conveying direction.
4. The vibrating screen as described in claim 3, characterized in that, The first included angle is 30 to 45°.
5. The vibrating screen as described in claim 2 or 3, characterized in that, Along the width direction of the sieve plate, the maximum size of the material leveling mechanism occupies 2 / 3 of the width of the sieve plate.
6. The vibrating screen as described in claim 5, characterized in that, The two wing plates are welded together, and the connection between each wing plate and the screen plate is either welding or riveting.
7. The vibrating screen as described in claim 6, characterized in that, Two connecting lines are formed at the connection points of the two wing plates and the sieve plate, and a second included angle is formed between the two connecting lines, which is 45° to 120°.
8. The vibrating screen as described in claim 6 or 7, characterized in that, The material leveling mechanism is located near the feed end of the vibrating conveyor and is situated downstream of the feed end along the conveying direction.
9. The vibrating screen as described in claim 6 or 7, characterized in that, The wingplate is triangular, and the height of each wingplate gradually decreases from the connection point of the two wingplates to the other end of the two wingplates.
10. The vibrating screen as described in claim 9, characterized in that, A tail plate is covered above the two wing plates. The tail plate is triangular, and its three sides are connected to the upper edges of the two wing plates and the upper surface of the sieve plate, respectively.