Tobacco filter and vibrating screening machine

Abstract

The present application discloses a tobacco filter device. The tobacco filter device includes a main body, a first filter screen, and a second filter screen. The main body has a channel for tobacco leaves to pass through. The first filter screen is disposed at the inlet end of the channel. The first filter screen includes a first filter screen body, a plurality of serrated bars, and a plurality of first filter holes spaced apart. The serrated bars protrude from the first filter screen, with the teeth of the serrated bars facing the inlet end of the channel. The first filter holes are configured to allow tobacco leaves to pass through and to filter out first impurities in the tobacco leaves. The second filter screen is spaced apart within the channel in parallel with the first filter screen and is disposed on a side of the first filter screen near the outlet end. The second filter screen includes a plurality of second filter holes spaced apart. The second filter holes are configured to allow second impurities in the tobacco leaves to pass through while blocking the tobacco leaves and retaining them on the second filter screen. The area of ​​the second filter holes is smaller than that of the first filter holes. This tobacco filter device can effectively filter out impurities in tobacco leaves, improving the stability and reliability of subsequent processes.

Description

Technical Field

[0001] The present application relates to the field of tobacco machinery, and in particular to a tobacco leaf filtering device and a vibrating screening machine. Background Art

[0002] Cut tobacco is often packaged in sacks, which inevitably contain hemp rope and fine sand. These impurities can seriously affect the quality of cigarettes. Current solutions are costly and prone to creating new debris. Furthermore, existing equipment has limited applicability and is unsuitable for reconstituted tobacco production.

[0003] It should be noted that the statements in this background technology section only provide background technology related to this application and do not necessarily constitute prior art. Summary of the Invention

[0004] The present application provides a tobacco leaf filtering device and a vibrating screening machine to screen out impurities in tobacco leaves.

[0005] In a first aspect, the present application provides a tobacco filter device comprising a main body, a first filter screen, and a second filter screen. The main body has a channel for tobacco leaves to pass through. The first filter screen is disposed in the channel and is located at the inlet end of the channel. The first filter screen comprises a first filter screen body, a plurality of serrated bars, and a plurality of first filter holes spaced apart on the first filter screen body. The serrated bars protrude from the first filter screen body, with the serrations of the serrated bars facing the inlet end of the channel. The first filter holes are configured to allow tobacco leaves to pass through so as to filter out first impurities in the tobacco leaves. The second filter screen is spaced apart in the channel in parallel with the first filter screen and is disposed on a side of the first filter screen near the outlet end. The second filter screen comprises a plurality of second filter holes spaced apart. The second filter holes are configured to allow second impurities in the tobacco leaves to pass through and to block the tobacco leaves so that they remain on the second filter screen. The area of ​​the second filter holes is smaller than that of the first filter holes.

[0006] In some embodiments, the plurality of first filter holes are evenly distributed on the first filter body.

[0007] In some embodiments, the shape of the first filter pores comprises a circle.

[0008] In some embodiments, a plurality of sawtooth bars are arranged corresponding to a plurality of first filter holes, and each sawtooth bar is arranged on one side of a first filter hole.

[0009] In some embodiments, the plurality of first filter holes and the plurality of serrated bars are alternately distributed in the longitudinal direction Y.

[0010] In some embodiments, the plurality of second filter holes are evenly distributed.

[0011] In some embodiments, the shape of the second filter hole includes an I-shape.

[0012] In some embodiments, the second filter holes include a pair of parallel elongated holes and a connecting hole connecting the pair of elongated holes, wherein the extending direction of the connecting hole is configured to be perpendicular to the conveying direction of the tobacco leaves in the vibrating screening machine.

[0013] In some embodiments, the invention further includes an impurity collection tray and a slag discharge pipe. The impurity collection tray is disposed at the outlet end of the channel to receive the second impurities passing through the second filter screen. The slag discharge pipe is configured to connect to the impurity collection tray to discharge the second impurities.

[0014] In some embodiments, a blowing device is further included, the blowing device being configured to blow the second impurities from the impurity collection tray toward the slag discharge pipe. A second aspect of the present application provides a vibrating screening machine, comprising a rocker arm, a vibrating trough, and the tobacco filter device described above, wherein the rocker arm is drivably connected to the vibrating trough to drive the vibrating trough to vibrate and transport, the tobacco filter device being disposed at the front end of the vibrating trough, and the tobacco filter device vibrates with the vibrating trough to transport tobacco into the vibrating trough.

[0015] Based on the technical solution provided in this application, a tobacco filter device includes a main body, a first filter screen, and a second filter screen. The main body has a channel for tobacco leaves to pass through. The first filter screen is disposed within the channel and is located at the inlet end of the channel. The first filter screen includes a first filter screen body, a plurality of serrated bars, and a plurality of first filter holes spaced apart on the first filter screen body. The serrated bars protrude from the first filter screen body, with the teeth of the serrated bars facing the inlet end of the channel. The first filter holes are configured to allow tobacco leaves to pass through and remove first impurities from the tobacco leaves. The second filter screen is spaced apart within the channel, parallel to the first filter screen, and is located on a side of the first filter screen near the outlet end. The second filter screen includes a plurality of second filter holes spaced apart. The second filter holes are configured to allow second impurities from the tobacco leaves to pass through while blocking the tobacco leaves and retaining them on the second filter screen. The area of ​​the second filter holes is smaller than that of the first filter holes. This effectively removes impurities from the tobacco leaves, improving the stability and reliability of subsequent processes.

[0016] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a three-dimensional diagram of the tobacco filter device according to an embodiment of the present application.

[0019] Figure 2 This is a schematic diagram of the first filter screen of the tobacco filter device according to an embodiment of the present application.

[0020] Figure 3 This is a schematic diagram of the serrated strips of the first filter screen of the tobacco filter device according to an embodiment of the present application.

[0021] Figure 4 This is a schematic diagram of the second filter screen of the tobacco filter device according to an embodiment of the present application.

[0022] Figure 5 Schematic diagram of a vibrating screening machine according to an embodiment of the present application.

[0023] In the picture:

[0024] 1. First filter screen; 11. First filter hole; 12. Sawtooth bar; 13. First filter screen body; 2. Second filter screen; 21. Second filter hole; 3. Slag discharge pipe; 4. Main body; 100. Tobacco filter device; 200. Rocker arm; 300. Vibration trough. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. Technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be subsequently positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used herein are interpreted accordingly.

[0028] The tobacco shreds in cigarettes are often formed by processing tobacco leaves and the coarse and hard veins in the tobacco leaves (i.e., tobacco stems). The tobacco filter device 100 provided in this application is used to remove impurities from tobacco leaves and tobacco stems to improve the stability and reliability of subsequent processes, thereby improving the quality of the tobacco shreds. Of course, the following description is only a specific embodiment of the use of the filter device in the tobacco field. The filter device can also be modified as needed to be applicable to other fields (for example, to screen out impurities in tea leaves or other materials).

[0029] like Figure 1 As shown, an embodiment of the present application provides a tobacco filter device 100. The tobacco filter device 100 includes a main body 4, a first filter screen 1, and a second filter screen 2. The main body 4 has a passage for tobacco leaves to pass through. The first filter screen 1 is disposed within the passage and at the inlet end of the passage. The first filter screen 1 includes a first filter body 13, a plurality of serrated bars 12, and a plurality of first filter holes 11 spaced apart on the first filter body 13. The serrated bars 12 protrude from the first filter body 13, with the teeth of the serrated bars 12 facing the inlet end of the passage. The first filter holes 11 are configured to allow tobacco leaves to pass through and remove first impurities from the tobacco leaves. The second filter screen 2 is spaced apart and disposed within the passage, parallel to the first filter screen 1, and is located on a side of the first filter screen 1 near the outlet end. The second filter screen 2 includes a plurality of second filter holes 21 spaced apart. The second filter holes 21 are configured to allow second impurities from the tobacco leaves to pass through while blocking the tobacco leaves and retaining them on the second filter screen 2. The area of ​​the second filter holes 21 is smaller than that of the first filter holes 11.

[0030] The tobacco filter device 100 of the present embodiment employs a first filter 1 and a second filter 2 spaced apart within the passage through which tobacco leaves pass. The area of ​​the first filter pores 11 of the first filter 1 is larger than the area of ​​the second filter pores 21 of the second filter 2. As tobacco leaves pass through, first impurities larger than the tobacco leaves are blocked by the first filter 1 and retained on the first filter 1. The tobacco leaves and second impurities smaller than the tobacco leaves pass through the first filter pores 11 and continue toward the second filter 2. Upon passing through the second filter 2, the second impurities pass through the second filter pores 21, are blocked by the second filter 2, and remain on the second filter 2. Thus, the tobacco filter device 100 of the present embodiment achieves step-by-step filtration of impurities of different sizes by providing the first filter 1 and the second filter 2, effectively removing impurities of varying sizes from the tobacco leaves. Furthermore, the tobacco filter device 100 of the present embodiment further enhances the removal of first impurities by providing serrated bars 12 on the first filter 1, so that first impurities are caught on the serrated bars 12 as they pass through the first filter 1.

[0031] In some embodiments, the serrated bar 12 includes a plurality of serrations arranged along its extension direction. The tobacco filter 100 is mounted on a vibrating screening machine, that is, the tobacco filter 100 vibrates. The serrations on the serrated bar 12 also reduce the risk of the first impurities already caught falling onto the second filter screen 2 due to the vibration.

[0032] Specifically, in this embodiment, the first impurity includes hemp rope, and the second impurity includes fine sand. The shapes and sizes of the two filter screens are adapted to the shape and size of the channel of the tobacco filter device 100. The first filter screen 1 and the second filter screen 2 are spaced apart in the channel. Thus, during filtering, the possibility of tobacco leaves passing through the gap between the filter screen and the channel is reduced. After the screening effect of the first filter screen 1, the hemp rope is hung on the serrated bar 12, and the tobacco leaves fall onto the second filter screen 2 along with the fine sand, and after the screening of the second filter screen 2, the fine sand passes through the second filter hole 21 and the tobacco leaves remain on the second filter screen 2, and then the tobacco leaves that have been screened out of impurities enter the next process. Therefore, through the tobacco filter device 100 of this embodiment, impurities of different sizes in the tobacco leaves can be effectively screened out, thereby improving the stability and reliability of subsequent processes.

[0033] refer to Figure 2 In some embodiments, the shapes of the first filter screen 1 and the second filter screen 2 include rectangles, and the length of the two filter screens includes 700 mm, and the width includes 600 mm.

[0034] In some embodiments, the plurality of first filter holes 11 are evenly distributed on the first filter body 13. Specifically, since tobacco leaves are evenly distributed when passing through the passage of the tobacco filter device 100, the plurality of first filter holes 11 are evenly distributed on the first filter body 13. This allows the first filter 1 to filter over the entire area, and also provides uniform filtering performance over the entire area, thereby enhancing the overall filtering effect.

[0035] In some embodiments, the shape of the first filter holes 11 includes a circle. Specifically, the diameter of the first filter holes 11 can be configured based on the characteristics of the first impurities. The diameter of the first filter holes 11 should also be larger than the size of the tobacco leaves to allow the tobacco leaves to pass through the first filter holes 11. In other words, the area of ​​the first filter holes 11 is configured to allow the tobacco leaves to pass through while blocking the first impurities.

[0036] In some embodiments not shown in the figures, the shape of the first filter hole 11 may also be other shapes, such as a triangle or a square.

[0037] In some embodiments, a plurality of sawtooth bars 12 are provided corresponding to the plurality of first filter holes 11. Specifically, the plurality of sawtooth bars 12 extend in a direction perpendicular to the surface of the first filter body 13 to further enhance the removal effect of the hemp rope.

[0038] The size parameters of the serrated bar 12 are configured according to the characteristics of the first impurity (such as hemp rope) to enhance the hooking effect on the first impurity.

[0039] refer to Figure 2 In some embodiments, the plurality of first filter holes 11 and the plurality of serrated bars 12 are alternately distributed in the longitudinal direction Y. In some embodiments not shown in the figures, the plurality of first filter holes 11 and the plurality of serrated bars 12 are alternately distributed in the transverse direction X. Specifically, since the first filter holes 11 are evenly distributed, the serrated bars 12 are arranged to alternate with the first filter holes 11, that is, the serrated bars 12 are also evenly distributed on the first filter screen body 13. This allows the first filter screen 1 to have uniform hooking performance for the first impurity (e.g., hemp rope) over the entire area.

[0040] In some embodiments, the plurality of second filter holes 21 are evenly distributed. The second filter holes 21 are evenly distributed so that the second filter screen 2 has uniform filtering performance over the entire area.

[0041] In some embodiments, the shape of the second filter hole 21 includes an I-shape.

[0042] In some embodiments, the second filter holes 21 include a pair of parallel elongated holes and a connecting hole connecting the pair of elongated holes. The connecting hole extends perpendicular to the direction in which the tobacco leaves are conveyed in the vibrating screening machine. In some embodiments not shown in the figures, the connecting hole extends at an angle to the direction in which the tobacco leaves are conveyed in the vibrating screening machine.

[0043] In some embodiments, the pores of the pair of parallel elongated holes and the connecting hole in the second filter pores 21 are preferably 4 mm apart, so that fine sand can pass through the second filter pores 21 but tobacco leaves cannot. Specifically, the pores of the second filter pores 21 should be configured based on the size of the tobacco leaves and the size of the second impurities (e.g., fine sand), so that tobacco leaves cannot pass through the second filter pores 21 but second impurities can, thereby enhancing the filtration effect.

[0044] In some embodiments, the first filter 1 and the second filter 2 further include handles. Specifically, the handles are provided on the first filter 1 and the second filter 2, respectively, and are positioned near the edges of the filters. This reduces the impact on the filtration function while increasing the ease of assembly and disassembly of the filters.

[0045] refer to Figure 1 In some embodiments, an impurity collecting tray and a slag discharge pipe 3 are also included. The impurity collecting tray is arranged at the outlet end of the channel to receive the second impurities passing through the second filter screen 2, and the slag discharge pipe 3 is configured to be connected to the impurity collecting tray to discharge the second impurities.

[0046] In some embodiments, a blowing device is further included, and the blowing device is configured to blow the second impurities from the impurity collection tray to the slag discharge pipe 3. Specifically, the blowing device is configured to start at a fixed time and blow fine sand from the impurity collection tray to the slag discharge pipe 3, and a collection bucket for receiving the fine sand is provided outside the slag discharge pipe 3, thereby reducing the inconvenience caused by manual cleaning of the impurity collection tray.

[0047] refer to Figure 5 The present application also provides a vibrating screening machine, comprising a rocker arm 200, a vibrating trough 300 and the tobacco filter device 100 as described above, the rocker arm 200 is driven and connected to the vibrating trough 300 to drive the vibrating trough 300 to vibrate and transport, the tobacco filter device 100 is arranged at the front end of the vibrating trough 300, and the tobacco filter device 100 vibrates along with the vibrating trough 300 to transport the tobacco into the vibrating trough 300. Specifically, the vibrating trough 300 is configured to be flush with the second filter screen 2, and the tobacco leaves are filtered by the tobacco filter device 100 and fall onto the vibrating trough 300, and then move to the next process under the action of the rocker arm 200. Through the vibrating screening machine of this embodiment, impurities (such as hemp rope and fine sand) in the tobacco leaves can be effectively screened out, and the tobacco leaves after the impurities are screened out are automatically transported to the next process, thereby making the tobacco processing process simpler and more efficient.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present application. They should all be included in the scope of the technical solution for protection requested in this application.

Claims

1. A tobacco leaf filtering device, characterized in that: include: A main body (4) having a passage for tobacco leaves to pass through; a first filter screen (1) arranged in the channel and located at the inlet end of the channel, the first filter screen (1) comprising a first filter screen body (13), a plurality of sawtooth bars (12) and a plurality of first filter holes (11) spaced apart on the first filter screen body (13), the sawtooth bars (12) being protrudingly arranged on the first filter screen body (13), with the saw teeth of the sawtooth bars (12) facing the inlet end of the channel, the first filter holes (11) being configured to allow the tobacco leaves to pass through so as to screen out first impurities in the tobacco leaves, the plurality of sawtooth bars (12) being arranged corresponding to the plurality of first filter holes (11), and the plurality of first filter holes (11) and the plurality of sawtooth bars (12) being alternately distributed in the longitudinal direction (Y); and The second filter screen (2) is arranged in the channel in a manner parallel to the first filter screen (1) and is arranged on a side of the first filter screen (1) close to the outlet end. The second filter screen (2) includes a plurality of second filter holes (21) distributed at intervals. The second filter holes (21) are configured to allow second impurities in the tobacco leaves to pass through and to block the tobacco leaves and leave them on the second filter screen (2). The area of ​​the second filter holes (21) is smaller than the area of ​​the first filter holes (11). The shape of the second filter holes (21) is I-shaped. The second filter holes (21) include a pair of parallel elongated holes and a connecting hole connecting the pair of elongated holes. The extending direction of the connecting hole is consistent with the longitudinal direction (Y) and is perpendicular to the conveying direction of the tobacco leaves in the vibrating screening machine.

2. The tobacco filter device according to claim 1, characterized in that: The plurality of first filter holes (11) are evenly distributed on the first filter body (13).

3. The tobacco filter device according to claim 1, characterized in that: The shape of the first filter hole (11) includes a circle.

4. The tobacco filter device according to claim 1, characterized in that: The plurality of second filter holes (21) are evenly distributed.

5. The tobacco filter device according to any one of claims 1 to 4, characterized in that: It also includes an impurity collection tray and a slag discharge pipe (3), wherein the impurity collection tray is arranged at the outlet end of the channel to receive the second impurities passing through the second filter screen (2), and the slag discharge pipe (3) is configured to be connected to the impurity collection tray to discharge the second impurities.

6. The tobacco filter device according to claim 5, characterized in that: It also includes a blowing device, which is configured to blow the second impurities from the impurity collecting tray to the slag discharge pipe (3).

7. A vibrating screening machine, characterized in that: The invention comprises a rocker arm (200), a vibration trough (300), and a tobacco filter device (100) according to any one of claims 1 to 6, wherein the rocker arm (200) is connected to the vibration trough (300) to drive the vibration trough (300) to vibrate and transport, the tobacco filter device (100) is arranged at the front end of the vibration trough (300), and the tobacco filter device (100) vibrates along with the vibration trough (300) to transport tobacco into the vibration trough (300).

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