Screening device
The screening device driven by the vibrating motor uses a combination of screen and baffle to separate and break up the stem bundles, which solves the problem of stem breakage in the existing technology and improves cigarette quality and production efficiency.
Patent Information
- Application Number
- CN202423129654.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing screening devices are prone to breaking up the stems, resulting in reduced cigarette quality and material waste.
The screening device driven by a vibrating motor uses first and second screens and baffles instead of rollers. Through the combination of vibration and baffles, the clumps of stems are separated and broken up, reducing the breakage of stems.
It effectively improves cigarette quality, reduces material waste, increases production efficiency, and prevents material blockage and machine downtime.
Smart Images
Figure CN223587701U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tobacco processing technical field, especially a screening device. BACKGROUND
[0002] Cigarette is generally composed of cut tobacco, cut stem and tobacco sheet. The cut stem is formed by cutting tobacco stems by a cutter. The cut stem is input into a downstream equipment for rolling or stored in a storage cabinet for temporary storage. Since the cut stem has small rigidity, the cut stem will be bunched up due to its own weight when the cut stem is stored in the cabinet for more than 48 hours. If the cut stem bunch is directly mixed into the cut tobacco and the tobacco sheet, the uniformity of the materials will be affected, and thus the quality of the cigarette will be affected. Moreover, once the cut stem bunch enters the mixing process, the material blocking risk will be caused, and the production continuity will be affected.
[0003] At present, the screening device is generally used to screen the cut stem bunch to separate the cut stem bunch from the cut stem. However, the existing screening device is easy to cause the cut stem to be crushed, which not only reduces the quality of the cigarette, but also causes the material waste. SUMMARY
[0004] The utility model discloses a screening device, which can reduce the crushing of the cut stem, effectively improve the quality of the cigarette and reduce the material waste.
[0005] The inventor has found that the reason why the existing screening device is easy to cause the cut stem to be crushed is that the existing screening device is provided with a poking roller at the discharge end. The poking roller can contact the cut stem bunch screened by the screening device to scatter the cut stem bunch. However, since the poking roller exerts a large force on the cut stem bunch, the cut stem is crushed when the cut stem bunch is scattered.
[0006] To solve the above technical problem, the embodiment of the utility model discloses a screening device for separating the cut stem bunch from the cut stem, which comprises:
[0007] a vibration motor;
[0008] a screening vibration tank connected with the vibration motor. The vibration motor can drive the screening vibration tank to vibrate, so that the tobacco material is conveyed in the screening vibration tank along a first direction. Along the first direction, the bottom of the screening vibration tank is provided with a first screen and a second screen in sequence. The first screen is used to separate the cut stem bunch from the cut stem, and the second screen is used to receive the cut stem bunch conveyed by the first screen.
[0009] a baffle provided at the discharge end of the screening vibration tank. The baffle is used to block the cut stem bunch from moving along the first direction, so that the cut stem bunch can be scattered on the second screen.
[0010] In operation, when the cut stem falls on the first screen, under the vibration of the screening vibration chute, most of the cut stem passes through the first screen and falls below the first screen, and a small number of cut stem groups are intercepted on the first screen and transported to the second screen, the baffle can prevent the cut stem group from continuing to move in the first direction, so that the cut stem group is retained on the second screen. Under the continuous vibration of the screening vibration chute, the cut stem group is completely dispersed under the impact of the second screen, and the dispersed cut stem falls below the second screen.
[0011] By using the second screen and the baffle to replace the original push roller to complete the loosening of the cut stem group, the cut stem crushing can be reduced, the cigarette quality can be effectively improved, and the material waste can be reduced.
[0012] Optionally, a plurality of first screen holes are arranged on the first screen, and a plurality of second screen holes are arranged on the second screen, the first screen holes and the second screen holes can allow the cut stem to pass through, and the area of the second screen hole is smaller than the area of the first screen hole.
[0013] Optionally, the first screen hole is a strip-shaped hole extending in the first direction, and the second screen hole is a square hole.
[0014] Optionally, a plurality of third screen holes are arranged on the baffle, and the third screen holes allow the cut stem to pass through.
[0015] Optionally, an overflow port is arranged on the side wall of the screening vibration chute, the overflow port is close to the discharge end of the screening vibration chute, and the bottom edge of the overflow port is higher than the upper surface of the second screen.
[0016] Optionally, the baffle extends in a second direction, the second direction is parallel to the upper surface of the second screen, and the second direction has an included angle with the width direction of the screening vibration chute, the two ends of the baffle in the second direction are respectively a connecting end and a flow guide end, the distance between the connecting end and the feeding end of the screening vibration chute is smaller than the distance between the flow guide end and the feeding end of the screening vibration chute, and the overflow port is located on the side of the flow guide end.
[0017] Optionally, a first conveying belt is further arranged below the first screen and the second screen, and the first conveying belt is used for conveying the cut stem screened out by the first screen and the second screen.
[0018] Optionally, a second conveying belt is further arranged below the overflow port, and the second conveying belt is used for receiving the overflowed cut stem.
[0019] Optionally, a flow guide groove is further arranged, one end of the flow guide groove is connected with the overflow port, and the other end of the flow guide groove is close to the feeding end of the second conveying belt, the flow guide groove is used for guiding the cut stem output by the overflow port to fall on the conveying surface of the second conveying belt.
[0020] Optionally, a cover plate is arranged above the second screen, a distance is arranged between the bottom surface of the cover plate and the upper surface of the second screen, and the cover plate is used to block the stem mass from jumping out of the second screen. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 A structure diagram of the screening device in the embodiment of the present application is shown Figure 1 ;
[0022] Figure 2 A structure diagram of the screening device in the embodiment of the present application is shown Figure 1 A partial top view of the screening device is shown
[0023] Figure 3 A structure diagram of the second screen, the baffle and the overflow port in the embodiment of the present application is shown
[0024] Figure 4 A structure diagram of the screening device in the embodiment of the present application is shown Figure 2 ;
[0025] Reference signs: 1. Vibration motor, 2. Screening vibration groove, 21. Feeding end, 22. Discharging end, 3. First screen, 4. Second screen, 5. Baffle, 6. First screen hole, 7. Second screen hole, 8. Third screen hole, 9. Overflow port, 10. Connecting end, 11. Flow guiding end, 13. Flow guiding groove, 14. Cover plate, 15. Feeding end of the second screen. DETAILED DESCRIPTION
[0026] The above description is only used to illustrate the specific embodiments of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Although the description of the present application is combined with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application combined with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0027] It should be noted that in the specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0028] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the utility model product is usually placed, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.
[0029] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.
[0030] In the description of the embodiments, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments can be understood according to the specific circumstances.
[0031] In order to make the purpose, technical scheme and advantages of the utility model clearer, the embodiments of the utility model will be further described in detail below with reference to the drawings.
[0032] As shown in Figure 1 and Figure 2 , the embodiments of the utility model disclose a screening device for separating stem clusters from stems in cut stems. The screening device provided by the present embodiment comprises a vibration motor 1, a screening vibration tank 2 and a baffle 5. Among them, the vibration motor 1 can select to use a rocker arm type motor or a self-excited motor according to the actual situation. Compared with the self-excited motor, the amplitude of the rocker arm type motor is larger, but it is also easy to cause stem crushing. In the present embodiment, the vibration motor 1 selects a self-excited motor. The screening vibration tank 2 is connected with the vibration motor 1, and the vibration motor 1 can drive the screening vibration tank 2 to vibrate, so that the tobacco material (including stems and stem clusters) is conveyed in the screening vibration tank 2 along a first direction (such as the X direction shown in Figure 1 Along the first direction, the bottom of the screening vibration tank 2 is sequentially provided with a first screen 3 and a second screen 4, a plurality of first screen holes 6 are arranged on the first screen 3, a plurality of second screen holes 7 are arranged on the second screen 4, and the first screen holes 6 and the second screen holes 7 can allow stems to pass through. The first screen 3 can separate stem clusters from stems, so that the stems fall below the first screen 3, and the stem clusters are intercepted on the first screen 3. The second screen 4 is used to receive the stem clusters conveyed by the first screen 3. The baffle 5 is arranged at the discharge end 22 of the screening vibration tank 2, and the baffle 5 is used to block the stem clusters from moving along the first direction, so that the stem clusters can be left on the second screen 4 to be dispersed.
[0033] In operation, when the cut stem falls on the first screen 3, under the vibration of the screening vibration chute 2, most of the cut stem falls through the first screen 3 to the lower side of the first screen 3, and a small number of cut stem groups are intercepted on the first screen 3 and transported to the second screen 4. The baffle 5 can prevent the cut stem group from continuing to move in the first direction, so that the cut stem group is retained on the second screen 4. Under the continuous vibration of the screening vibration chute 2, the cut stem group is completely dispersed under the impact of the second screen 4, and the dispersed cut stem falls through the second screen 4 to the lower side of the second screen 4.
[0034] By using the second screen 4 and the baffle 5 to replace the original push roller to complete the loosening work of the cut stem group, the cut stem crushing can be reduced, the cigarette quality can be effectively improved, and the material waste can be reduced.
[0035] Alternatively, as shown in Figure 2 , the area of the second screen hole 7 is smaller than the area of the first screen hole 6. Further, the first screen hole 6 is a strip-shaped hole extending in the first direction, and the second screen hole 7 is a square hole. Specifically, the inventor sets the first screen hole 6 as a strip-shaped hole with a width of 20 mm, and the second screen hole 7 as a square hole with a side length of 20 mm according to the actual shape and size of the cut stem group on site.
[0036] By using the above technical solution, since the area of the first screen hole 6 is larger, it not only facilitates the cut stem to pass through the first screen 3 as soon as possible, but also reduces the resistance of the cut stem group to forward transport. When the cut stem group is transported to the second screen 4, the area of the second screen hole 7 can be reduced because the resistance of the cut stem group to transport is no longer required. In addition, the smaller area of the second screen hole 7 can also increase the contact area of the cut stem group with the second screen 4, thereby facilitating the dispersion of the cut stem group.
[0037] Alternatively, as shown in Figure 3 , the baffle 5 is provided with a third screen hole 8, and the third screen hole 8 allows the cut stem to pass through. Specifically, the third screen hole 8 is a square hole with a side length of 20 mm.
[0038] By using the above technical solution, by providing the third screen hole 8 on the baffle 5, the number of screen holes can be increased, so that part of the dispersed cut stem on the second screen 4 can pass through the third screen hole 8 under the action of inertia, and the other part can pass through the second screen hole 7, thereby increasing the transport speed of the cut stem, preventing material blockage, causing unnecessary shutdown of the screening device, and affecting production efficiency.
[0039] Alternatively, as shown in Figure 1 and Figure 3As shown, the side wall of the screening vibration groove 2 is provided with an overflow port 9, the overflow port 9 is close to the discharge end 22 of the screening vibration groove 2, and the bottom edge of the overflow port 9 is higher than the upper surface of the second screen 4. Specifically, the distance (indicated as size L3) between the bottom edge of the overflow port 9 and the upper surface of the second screen 4 is 90mm. Figure 3
[0040] With the above technical scheme, on the one hand, the overflow port 9 can prevent the device from stopping due to excessive material blocking on the second screen 4, and on the other hand, the bottom edge of the overflow port 9 being higher than the upper surface of the second screen 4 can prevent the material from overflowing directly without the vibration screening effect of the second screen 4, thereby causing material waste.
[0041] Optionally, as shown in Figure 1 and Figure 3 , the baffle 5 extends along a second direction (such as the Y direction shown in Figure 3 ), which is parallel to the upper surface of the second screen 4, and the second direction and the width direction (such as the Z direction shown in Figure 3 ) of the screening vibration groove 2 have an included angle (such as the angle α shown in Figure 3 ), the two ends of the baffle 5 along the second direction are respectively a connecting end 10 and a flow guide end 11, the distance between the connecting end 10 and the feeding end 21 of the screening vibration groove 2 is less than the distance between the flow guide end 11 and the feeding end 21 of the screening vibration groove 2, and the overflow port 9 is located on the side where the flow guide end 11 is located. In other words, the distance (indicated as size L1) between the connecting end 10 and the feeding end 15 of the second screen is less than the distance (indicated as size L2) between the flow guide end 11 and the feeding end 15 of the second screen, and the overflow port 9 is located on the side where the flow guide end 11 is located. Figure 3 Figure 3
[0042] With the above technical scheme, since the side where the overflow port 9 is located has a longer length, the cut stem clusters are more likely to move and gather to this side, which facilitates rapid overflow when the cut stem clusters are excessive, thereby preventing material blocking.
[0043] Further, the inventors have found that in the existing screening device, the screening mechanism and the conveying mechanism are connected, that is, when the screening mechanism vibrates, the conveying mechanism vibrates together, and after the cut stem and cut stem screening are completed, the cut stem is conveyed to the conveying mechanism, but the conveying mechanism is in a vibrating state, which causes the cut stem on the conveying mechanism to continue vibrating, resulting in unnecessary cut stem crushing, thereby reducing the quality of cigarettes and causing material waste.
[0044] Therefore, the screening device in this application also includes a first conveyor belt (not shown in the figure), located below the first screen 3 and the second screen 4. The first conveyor belt is used to transport the filaments screened out by the first screen 3 and the second screen 4. Specifically, the first conveyor belt and the screening trough 2 are arranged independently to prevent the first conveyor belt from breaking the filaments screened out by the first screen 3 and the second screen 4.
[0045] Optionally, a second conveyor belt 12 (not shown in the figure) is also included, located below the overflow port 9. The second conveyor belt is used to receive the overflowing stems, which facilitates the subsequent centralized processing of the stems.
[0046] Optionally, such as Figure 4 As shown, it also includes a guide channel 13, one end of which is connected to the overflow port 9, and the other end is close to the feed end of the second conveyor belt. The guide channel 13 is used to guide the strands output from the overflow port 9 to fall onto the conveying surface of the second conveyor belt.
[0047] Optionally, such as Figure 4 As shown, it also includes a cover plate 14, which is disposed above the second screen 4. The bottom surface of the cover plate 14 is spaced a certain distance from the upper surface of the second screen 4. This design allows the stalk bundle to have enough space to jump on the second screen 4. On the other hand, the cover plate 14 can also be used to prevent the stalk bundle from jumping out from above the second screen 4, thereby preventing the smoke dust in the stalk from splashing.
[0048] Optionally, the first screen 3, the second screen 4, and the baffle 5 are all made of stainless steel. Since the wire strands contain a certain amount of moisture, using stainless steel can prevent the screening trough 2 from rusting and improve its service life.
[0049] 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 screening device for separating a plugwad from a cut filler, characterized in that, The application relates to a vibration motor, a screening vibration tank connected with the vibration motor, wherein the vibration motor can drive the screening vibration tank to vibrate so as to convey tobacco material in a first direction in the screening vibration tank; a first screen and a second screen are sequentially arranged on the bottom of the screening vibration tank in the first direction, the first screen is used for separating tobacco stems from the tobacco stems, and the second screen is used for receiving the tobacco stems conveyed by the first screen. A baffle is arranged at the discharging end of the screening vibration tank, and the baffle is used for blocking the tobacco stems from moving in the first direction, so that the tobacco stems can be scattered on the second screen. A plurality of first screen holes are arranged on the first screen, a plurality of second screen holes are arranged on the second screen, the first screen holes and the second screen holes can allow the tobacco stems to pass through, and the area of the second screen holes is smaller than that of the first screen holes. The first screen holes are strip-shaped holes extending in the first direction, and the second screen holes are square holes.
2. The screening apparatus of claim 1, wherein, A plurality of third screen holes are arranged on the baffle, and the third screen holes allow the tobacco stems to pass through.
3. The screening apparatus of claim 2, wherein, An overflow port is arranged on the side wall of the screening vibration tank, the overflow port is close to the discharging end of the screening vibration tank, and the bottom edge of the overflow port is higher than the upper surface of the second screen.
4. The screening apparatus of claim 1, wherein, The baffle extends in a second direction, the second direction is parallel to the upper surface of the second screen, and the baffle has a connection end and a flow guide end at two ends in the second direction, the distance between the connection end and the feeding end of the screening vibration tank is smaller than the distance between the flow guide end and the feeding end of the screening vibration tank, and the overflow port is located on the side where the flow guide end is located.
5. The screening apparatus of claim 1, wherein, A first conveying belt is arranged below the first screen and the second screen, and the first conveying belt is used for conveying the tobacco stems screened by the first screen and the second screen.
6. The screening apparatus of claim 5, wherein, A second conveying belt is arranged below the overflow port, and the second conveying belt is used for receiving the overflowed tobacco stems.
7. The screening apparatus of claim 5, wherein, A flow guide groove is arranged at one end of the overflow port and close to the feeding end of the second conveying belt, and the flow guide groove is used for guiding the tobacco stems output by the overflow port to fall on the conveying surface of the second conveying belt.
8. The screening apparatus of claim 7, wherein, A cover plate is arranged above the second screen, the bottom surface of the cover plate is spaced apart from the upper surface of the second screen by a certain distance, and the cover plate is used for blocking the tobacco stems from jumping out of the second screen.
9. The screening apparatus of claim 8, wherein, 10. The screening apparatus of claim 6, wherein,