A sorting vibration trough device for cut tobacco and stem in a cigarette making machine

Abstract

The present invention provides a vibrating trough device for sorting cut tobacco and stem cut tobacco in a cigarette making machine, which comprises a vibrating trough body equipped with a vibrating motor. Along the conveying direction of the vibrating trough body, a first sieve hole group and a second sieve hole group are successively arranged. A first funnel and a second funnel are respectively installed below the first sieve hole group and at the conveying end of the vibrating trough body. Both the first funnel and the second funnel are communicated with a centralized stem return channel, and a stem cut tobacco collection box is installed below the second sieve hole group; a cut tobacco adsorption and recovery device is installed above the vibrating trough body. The vibrating trough body receives the stem cut tobacco after secondary sorting from the cigarette making machine, and the vibrating motor drives the vibrating trough body to vibrate, so as to separate the thick stem cut tobacco, the thin stem cut tobacco and the cut tobacco. The cut tobacco with lighter weight is adsorbed and collected by the cut tobacco adsorption and recovery device, the thin stem cut tobacco falls into the first funnel through the first sieve hole group, the thick stem cut tobacco falls into the second funnel from the end of the vibrating trough body, and the smaller cut tobacco and stem chips fall into the second sieve hole group, realizing the sorting and collection of cut tobacco and stem cut tobacco.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco shred and stem sorting, and in particular to a vibrating trough device for sorting tobacco shreds and stems in a cigarette making machine. Background Art

[0002] During the production of cigarette sticks, the raw materials of cigarette sticks mainly include tobacco shreds, tobacco stems and other impurities. In order to improve the internal quality of cigarette sticks, when the raw materials are put into a cigarette making machine, it is necessary to separate the stem shreds from the material to reduce the stem content rate. The existing cigarette making machines mainly use the method of air separation for secondary stem and shred separation. Air separation is carried out by utilizing the difference in the suspension speeds of tobacco shreds, stem shreds and expanded tobacco shreds in the air flow. The principle is as follows: due to the different weights of tobacco shreds, stem shreds and expanded tobacco shreds, their suspension speeds are also different. However, some curly tobacco shreds will also cause an increase in the suspension speed due to the reduction in volume. Similarly, the large surface area of stem shreds will also cause a decrease in the suspension speed. Therefore, the screening accuracy of this air separation method is not high, and the air separation method has a relatively serious impact on the problem of tobacco shred breakage, affecting the product quality. Summary of the Invention

[0003] The purpose of the present invention is to provide a vibrating trough device for sorting tobacco shreds and stems in a cigarette making machine, which screens the stem shreds after the secondary sorting of the cigarette making machine again to avoid waste of tobacco shreds.

[0004] The present invention provides a vibrating trough device for sorting tobacco shreds and stems in a cigarette making machine, including a vibrating trough body. A vibrating motor is fixedly installed at the bottom end of the vibrating trough body. Along the conveying direction of the vibrating trough body, a first sieve hole group for screening out fine stem shreds and a second sieve hole group for screening out tobacco shreds are successively arranged. A first funnel for recovering fine stem shreds and a second funnel for recovering coarse stem shreds are respectively installed below the first sieve hole group and at the conveying end of the vibrating trough body. Both the first funnel and the second funnel are communicated with a centralized stem return channel. A stem shred collection box is installed below the second sieve hole group; a tobacco shred adsorption and recovery device is installed above the vibrating trough body.

[0005] Further, the tobacco shred adsorption and recovery device includes a conveyor belt, mounting plates symmetrically installed on both sides of the conveyor belt, and a negative pressure cavity fixedly installed between the two mounting plates. A negative pressure channel communicated with the negative pressure cavity is installed on the mounting plate. The conveyor belt is wound around the outside of the negative pressure cavity. A plurality of arrayed mesh holes are formed in the conveyor belt. A return wire funnel is installed at the conveying end of the conveyor belt.

[0006] Further, the first sieve hole group includes a plurality of arrayed strip-shaped sieve holes, and a diversion partition is arranged between every two adjacent columns of the strip-shaped sieve holes.

[0007] Further, a chamfer is provided at the inlet end of the diversion partition.

[0008] Furthermore, the second sieve hole group includes a plurality of circular sieve holes arranged in an array.

[0009] Furthermore, a wire shoveling knife that fits the conveyor belt is fixedly installed between the two mounting plates directly above the waste wire funnel.

[0010] Furthermore, the blade of the wire shoveling knife fits the conveyor belt, and the wire shoveling knife is inclined towards the waste wire funnel.

[0011] Furthermore, the strip-shaped sieve holes are rectangular holes or waist-shaped holes.

[0012] Furthermore, the bottom end of the waste wire funnel is communicated with a waste wire channel, and a positive pressure air blowing port is arranged inside the waste wire channel.

[0013] Furthermore, a plurality of equally spaced long holes are opened at the bottom end of the negative pressure cavity, and the positions of the mesh holes on the conveyor belt correspond to those of the long holes.

[0014] The beneficial effects of the technical solution of the present invention are as follows: The vibrating trough body receives the cut tobacco stems after secondary sorting from the cigarette making machine. The vibrating trough body is driven by a vibrating motor to vibrate, so as to separate the thick cut tobacco stems, thin cut tobacco stems and cut tobacco. The cut tobacco with a lighter weight is adsorbed and collected by the cut tobacco adsorption and recovery device. The thin cut tobacco stems fall into the first funnel through the first sieve hole group, and the thick cut tobacco stems fall into the second funnel from the end of the vibrating trough body. The second sieve hole group is used to screen out smaller cut tobacco and cut tobacco stalks, realizing the sorting and collection of cut tobacco and cut tobacco stems, further recovering the cut tobacco that is not completely screened, reducing the omission of cut tobacco removal, avoiding waste. The device has a higher screening accuracy for cut tobacco compared with the air separation method by combining vibration screening and negative pressure adsorption, and can effectively avoid the problem of cut tobacco breakage caused by cut tobacco agitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of a partial structure of the vibrating trough body in the present invention;

[0018] Figure 3 It is a schematic diagram of the overall structure showing the internal structure of the cut tobacco adsorption and recovery device in the present invention;

[0019] Description of the reference numerals in the drawings: 1 - vibrating trough body, 101 - first sieve hole group, 102 - diversion partition plate, 103 - second sieve hole group, 2 - first funnel, 3 - second funnel, 4 - cut tobacco collection box, 5 - centralized cut tobacco return channel, 6 - mounting plate, 7 - conveyor belt, 8 - wire cutting knife, 9 - negative pressure channel, 10 - return wire funnel, 11 - negative pressure cavity. Detailed implementation manners

[0020] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined. In addition, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] Embodiment 1

[0024] As Figures 1 - 3As shown in the figure, a vibrating trough device for separating cut tobacco and stem in a cigarette making machine includes a vibrating trough body 1. A vibrating motor is fixedly installed at the bottom end of the vibrating trough body 1. The vibrating trough body 1 receives the stem separated by the secondary separation of the cigarette making machine. The vibrating trough body 1 is driven by the vibrating motor to vibrate regularly, so that the stem is thrown up on the vibrating trough body 1 and moves backward. Due to the action of inertia, the stem and cut tobacco in the stem will be initially separated under the action of the vibrating trough body 1. The cut tobacco is on the upper layer of the vibrating trough body, and the tobacco stem is on the lower layer of the vibrating trough body 1, thus realizing the initial separation of the tobacco stem and cut tobacco in the stem.

[0025] Above the vibrating trough body 1, there is a cut tobacco adsorption and recovery device. The cut tobacco adsorption and recovery device includes a conveyor belt 7, mounting plates 6 symmetrically installed on both sides of the conveyor belt 7, and a negative pressure cavity 11 fixedly installed between the two mounting plates 6. A negative pressure channel 9 communicating with the negative pressure cavity 11 is installed on the mounting plate 6. The conveyor belt 7 is arranged around the outside of the negative pressure cavity 11. A number of arrayed mesh holes are provided on the conveyor belt 7. A number of equally spaced long holes are provided at the bottom end of the negative pressure cavity 11. The positions of the mesh holes on the conveyor belt 7 correspond to those of the long holes, so that when negative pressure is generated inside the negative pressure cavity 11, the lighter cut tobacco floating on the upper layer after the vibration of the vibrating trough body 1 is adsorbed to the bottom surface of the conveyor belt through the mesh holes on the conveyor belt 7.

[0026] At the conveying end of the conveyor belt 7, there is a cut tobacco return funnel 10. The bottom end of the cut tobacco return funnel 10 is communicated with a cut tobacco return channel. A positive pressure air blowing port is arranged inside the cut tobacco return channel to convey the cut tobacco to the cut tobacco storage area. Between the two mounting plates 6, a cut tobacco scraping knife 8 fitting the conveyor belt 7 is fixedly installed directly above the cut tobacco return funnel 10. Specifically, the cut tobacco scraping knife 8 can completely fit the surface of the conveyor belt 7, or it can be set that the blade of the cut tobacco scraping knife 8 fits the conveyor belt 7. The cut tobacco scraping knife 8 is inclined as a whole towards the cut tobacco return funnel 10. The inclined setting of the cut tobacco scraping knife 8 can prevent the cut tobacco from getting stuck between the conveyor belt 7 and the cut tobacco scraping knife 8. The cut tobacco scraping knife 8 is used to scrape the cut tobacco adsorbed on the surface of the conveyor belt 7 into the cut tobacco return funnel 10.

[0027] On the vibrating trough body 1, a first sieve hole group 101 for screening out fine stem filaments and a second sieve hole group 103 for screening out the tobacco leaves not adsorbed by the tobacco leaf adsorption and recovery device and residual fine stems are successively arranged along its conveying direction; the first sieve hole group 101 includes a number of strip-shaped sieve holes arranged in an array, and the strip-shaped sieve holes can be rectangular holes or waist-shaped holes. In the specific implementation process, adaptive selection can be made according to the actual situation. A diversion partition 102 is arranged between every two adjacent columns of strip-shaped sieve holes. The inlet end of the diversion partition 102 is provided with a chamfer, which plays a guiding role, straightens the tobacco stems, makes the tobacco stems parallel to the strip-shaped sieve holes, and facilitates the fine stems to pass through the strip-shaped sieve holes and be screened out of the vibrating trough body 1. The remaining residual tobacco leaves and thick stem sticks not adsorbed by the tobacco leaf adsorption and recovery device are continuously conveyed by the vibrating trough body 1 to the downstream. The second sieve hole group 103 includes a number of circular sieve holes arranged in an array. A stem filament collection box 4 is installed below the second sieve hole group 103 to receive the residual fine stem sticks and residual tobacco leaves screened out by the circular sieve holes on the vibrating trough body 1.

[0028] A first funnel 2 for recovering fine stem filaments and a second funnel 3 for recovering thick stem filaments are respectively installed below the first sieve hole group 101 and at the conveying end of the vibrating trough body 1. Both the first funnel 2 and the second funnel 3 are communicated with the centralized stem return channel 5. The first funnel 2 receives the fine stem sticks guided and filtered by the vibrating trough body 1 and is conveyed to the centralized stem return place, and the second funnel 3 conveys the larger stem sticks sorted out by the vibrating trough body 1 to the centralized stem return place.

[0029] The present invention can be modified on the basis of the original cigarette making machine. The original vibrating trough device of the cigarette making machine is removed and the new tobacco leaf and stem filament sorting vibrating trough device is installed in place. Combining with the inertia principle of the object, the vibrating trough body 1 is used to filter, sort and convey the raw materials mixed with stem filaments, effectively reducing the stem content in the tobacco leaves and reducing the waste of tobacco leaves. The screening accuracy of the tobacco leaves by this device through the combination of vibration screening and negative pressure adsorption is higher than that of the air separation method, and it can effectively avoid the problem of breakage caused by the agitation of the tobacco leaves.

[0030] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sorting vibration trough device for cut tobacco and stem in a cigarette making machine, characterized in that, It includes a vibrating trough body, a vibrating motor is fixedly installed at the bottom end of the vibrating trough body, a first sieve hole group for screening out fine stem filaments and a second sieve hole group for screening out cut tobacco are successively arranged on the vibrating trough body along its conveying direction, a first funnel for recovering fine stem filaments and a second funnel for recovering thick stem filaments are respectively installed below the first sieve hole group and at the conveying end of the vibrating trough body, both the first funnel and the second funnel are communicated with a centralized stem returning channel, and a stem filament collecting box is installed below the second sieve hole group; a cut tobacco adsorption and recovery device is installed above the vibrating trough body; The cut tobacco adsorption and recovery device includes a conveyor belt, mounting plates symmetrically installed on both sides of the conveyor belt, and a negative pressure cavity fixedly installed between the two mounting plates. A negative pressure channel communicated with the negative pressure cavity is installed on the mounting plate. The conveyor belt is arranged around the outside of the negative pressure cavity. A plurality of arrayed mesh holes are formed in the conveyor belt, and a wire returning funnel is installed at the conveying end of the conveyor belt; The first sieve hole group includes a plurality of arrayed strip-shaped sieve holes, and a diversion partition is arranged between every two adjacent columns of the strip-shaped sieve holes; The second sieve hole group includes a plurality of arrayed circular sieve holes.

2. The cigarette rod and cut rag sorting vibrating trough device of a cigarette making machine according to claim 1, characterized in that, A chamfer is formed at the inlet end of the diversion partition.

3. The cigarette tobacco and stem sorting vibrating trough device according to claim 1, characterized in that, A wire shoveling knife fitting the conveyor belt is fixedly installed between the two mounting plates directly above the wire returning funnel.

4. The cigarette making machine tobacco and stem sorting vibrating trough device according to claim 3, characterized in that, The blade of the wire shoveling knife fits the conveyor belt, and the wire shoveling knife is inclined towards the wire returning funnel.

5. The cigarette rod and cut rag sorting vibrating trough device of a cigarette making machine according to claim 1, characterized in that, The strip-shaped sieve holes are rectangular holes or waist-shaped holes.

6. The cigarette rod and cut tobacco sorting vibrating trough device of a cigarette making machine according to claim 1, characterized in that, The bottom end of the wire returning funnel is communicated with a wire returning channel, and a positive pressure air blowing port is arranged inside the wire returning channel.

7. The cigarette rod and cut rag sorting vibrating trough device of a cigarette making machine according to claim 1, characterized in that A plurality of equally spaced long strip holes are formed at the bottom end of the negative pressure cavity, and the mesh holes on the conveyor belt correspond to the positions of the long strip holes.

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