CN114011719A - Vibration conveying and flow guiding screening device before tobacco material winnowing - Google Patents
Vibration conveying and flow guiding screening device before tobacco material winnowing Download PDFInfo
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- CN114011719A CN114011719A CN202111482781.9A CN202111482781A CN114011719A CN 114011719 A CN114011719 A CN 114011719A CN 202111482781 A CN202111482781 A CN 202111482781A CN 114011719 A CN114011719 A CN 114011719A
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- 239000000463 material Substances 0.000 title claims abstract description 171
- 241000208125 Nicotiana Species 0.000 title claims abstract description 68
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 68
- 238000012216 screening Methods 0.000 title claims abstract description 41
- 238000007493 shaping process Methods 0.000 claims abstract description 36
- 239000011236 particulate material Substances 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims description 8
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- 230000000694 effects Effects 0.000 description 15
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- 238000005054 agglomeration Methods 0.000 description 9
- 230000002776 aggregation Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000005188 flotation Methods 0.000 description 6
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides a vibrating conveying and flow guiding screening device before tobacco material winnowing, which comprises a vibrating conveying groove, wherein a primary material shaping and flow guiding unit, a material leveling and homogenizing unit and a secondary material shaping and flow guiding unit are arranged in the vibrating conveying groove; the material leveling and homogenizing unit is a triangular prism-shaped material homogenizing plate; the surface of the particulate material screening unit is provided with a plurality of screen holes; the material diversion layering unit comprises a horizontal sawtooth comb plate and an inclined plane sawtooth comb plate. The device can solve the phenomenon that the cut tobacco that appears when the material gets into the air separator conglomerates, agglomerates, hardens, eliminates air separator material entry jam problem, further improves the stalk rejection rate.
Description
Technical Field
The invention relates to the technical field of tobacco processing, in particular to a vibrating conveying and flow guiding screening device for tobacco materials before air separation.
Background
In the tobacco-making production process of cigarette industry enterprises, the air separator is one of key devices in the tobacco processing technological process, and is mainly used for the implementation of the key links of the wind power screening process of different processing procedures of tobacco materials such as tobacco flakes, cut tobacco, tobacco stems, cut stems, expanded tobacco and the like, wherein the air separator is used after the expanded tobacco moisture regaining process section, the cut tobacco or cut stem expansion device, so that conglomerations (caking, washing balls, silk conglomerations and the like) and most of cut stems can be effectively separated, and the purity of the cut tobacco or the cut stems is improved.
The working principle of the winnowing machine is as follows: after the materials enter the winnowing box body through the feeding mechanism, firstly, the air area of the cut tobacco is larger than that of the stem due to the fact that the density and the air area of the separated materials are different, the density of the stem is larger than that of the cut tobacco, and the separated objects are subjected to winnowing under the action of lateral air inflow. In order to ensure the separation effect, the vertical air inlet of the secondary separation box body is adopted to carry out primary flotation on the floated materials, the light materials mixed in the floating materials are separated out by utilizing the difference of the suspension speed, and the heavier materials (mainly stems) are discharged from the outlet of the secondary separation box body. Therefore, the separation precision of the materials can be greatly improved, and the separation effect is ensured.
It can be seen from the working principle of the air separator that if the leaf shreds and the stalk sticks in each material unit can be fully subjected to flotation and flotation in theory, the purer leaf shreds can enter the downstream process, and more stalk sticks can be rejected. However, in actual production, when the material is conveyed from an upstream process to an input port, due to the problems of the accumulation form, the cut tobacco structure, the conveying state (conveying belt and vibration groove alternate conveying), the moisture change and the like of the material, when the material to be winnowed enters the winnowing machine, the phenomena of cut tobacco agglomeration, agglomeration and hardening are aggravated due to the fact that the moisture change is accelerated by the wind power driving principle, the mutual winding and wrapping of the cut tobacco and the stalk leads to great discount on the effects of the floating and flotation functions, the stalk content rate of the material in the downstream process is too high, the process control and the product quality are seriously affected, and particularly when the lump type material is excessively accumulated at the inlet of the winnowing machine, the material can be blocked and shut down, and the problem of process control of the whole production line is caused.
Chinese patent (application number: 202010566546.9) discloses a tobacco shred shaping device, which is characterized in that a multi-stage tobacco holding roller is additionally arranged at a feeding hole in an air separation chamber and is connected with a stepping motor for power supply and transmission control, and the stepping motor is arranged outside the air separation chamber and used for solving the problem that the existing air separator is poor in separation effect under the condition that negative pressure wind power is not changed.
Chinese patent (application number: 201210277937.4) discloses an on-line stem separating device and method for cut tobacco with high water content, which is characterized in that high-water-content cut tobacco of a cut tobacco production line passes through a cut tobacco opener, the cut tobacco is processed into wide, thin and fluffy states under the action of a high-frequency vibration groove, and then the cut tobacco is sent to a secondary air separator to separate stems from the cut tobacco.
The patent documents disclosed above all modify or add devices to the air separator in the material "treatment" stage to achieve external loosening of the material and supplement of the air separation function, but the main optimization and improvement is to add devices inside the air separator to achieve the effect of loosening the cut tobacco in the form of upward dropping and staggered rolling of the material by staggered rotation of paired openers or claw thread rollers, and the method will aggravate the breaking and consumption of the cut tobacco to a certain extent. And owing to need install the transformation to former air separator inside, will arouse the change of the pneumatic layout structure of selection by winnowing box, can cause the influence to the integrated design of complete machine simultaneously.
The device takes the cut tobacco vibrating conveyor in the material input stage as a research object, and solves the problems of cut tobacco agglomeration, caking and hardening when materials to be winnowed enter a winnowed machine through redesigning and optimizing the structure of the material conveying device based on the research on the accumulation form and the density degree of the input materials, thereby eliminating the problem of material inlet blockage of the winnowed machine.
Disclosure of Invention
The invention aims to provide a vibrating conveying and guiding screening device before tobacco material winnowing, which can be used for shaping, guiding, leveling, screening, guiding and layering tobacco materials in vibrating conveying to enable the materials to be looser, so that the winnowing effect is improved, the rejection rate of stems is improved, and the utilization rate of raw materials is improved.
The invention provides a vibrating conveying and flow guiding screening device before tobacco material winnowing, which comprises a vibrating conveying groove, the vibrating conveying groove is arranged at the top of the vibrating conveyor, the discharge end of the vibrating conveying groove is positioned at the inlet side of the air separator, a primary material shaping and guiding unit, a material leveling and homogenizing unit and a secondary material shaping and guiding unit are sequentially arranged in the vibration conveying groove from a feeding end to a discharging end, the discharge end of the vibration conveying groove is connected with a particulate material screening unit, the tail end of the particulate material screening unit is provided with a material diversion layering unit, the primary material shaping and guiding unit and the secondary material shaping and guiding unit both comprise a plurality of V-shaped guiding blocks with different specifications, the V-shaped flow guide block is formed by connecting the tails of two triangular wing plates, and the tails of the two triangular wing plates are fixed in the vibration conveying groove towards the direction of the feed end; the material leveling and homogenizing unit is a triangular prism-shaped material homogenizing plate, the bottom of which is fixedly connected with the vibration conveying groove; the surface of the particulate material screening unit is provided with a plurality of screen holes; the material diversion layering unit comprises a horizontal sawtooth comb plate and an inclined plane sawtooth comb plate inclined relative to the horizontal sawtooth comb plate.
Preferably, the specifications of the two triangular wing plates in the same V-shaped guide block are completely the same, and the triangular surfaces of the two triangular wing plates are perpendicular to the surface of the vibration conveying groove.
Preferably, the primary material shaping and guiding unit comprises three V-shaped guiding blocks with different specifications, the specifications of the three V-shaped guiding blocks are gradually reduced from the direction close to the feeding end to the direction close to the discharging end of the vibrating conveying trough, and two triangular wing plates in each V-shaped guiding block are symmetrically arranged about the central axis of the vibrating conveying trough.
Preferably, the secondary material shaping and guiding unit includes two rows of V-shaped guiding blocks arranged along a direction perpendicular to the central axis of the vibration conveying trough, wherein the number of the first row of V-shaped guiding blocks near the feeding end of the vibration conveying trough is two, the positions of the first row of V-shaped guiding blocks are symmetrical with respect to the central axis of the vibration conveying trough, the specifications of the first row of V-shaped guiding blocks are the same as the specifications of the V-shaped guiding blocks near the discharging end of the vibration conveying trough in the primary material shaping and guiding unit, the number of the second row of V-shaped guiding blocks near the discharging end of the vibration conveying trough is four, the specifications of the second row of V-shaped guiding blocks are smaller than the specifications of the first row of V-shaped guiding blocks, and the V-shaped guiding blocks in the second row are symmetrical with respect to the central axis of the vibration conveying trough in pairs.
Preferably, the axis of triangular prism with the axis of vibration conveyer trough is mutually perpendicular, the bottom surface of triangular prism with the surface of vibration conveyer trough is laminated mutually, the both ends of triangular prism with the both sides face of vibration conveyer trough is inconsistent.
Preferably, the particulate material screening unit comprises a lower plane screen, a gradient screen and an upper plane screen which are sequentially connected, wherein the lower plane screen and the upper plane screen are arranged in parallel, the lower plane screen is connected with the discharge end of the vibratory conveying trough, and the material diversion layering unit is positioned at the tail end of the upper plane screen.
Preferably, the angle between the sloped screen and the plane of the lower planar screen is not less than 20 °.
Preferably, the particulate material screening unit is provided with a plurality of rows of transverse long circular sieve holes and longitudinal long circular sieve holes which are arranged at intervals.
Preferably, the horizontal sawtooth comb plate comprises a plurality of horizontal comb teeth which are distributed at intervals and extend from the tail end of the upper plane screen mesh, the inclined plane sawtooth comb plate comprises a plurality of inclined comb teeth which are opposite to the inclined plane sawtooth comb plate, the inclined plane sawtooth comb plates are arranged at intervals with the horizontal comb teeth, and the inclined plane sawtooth comb teeth are opposite to the inclined plane sawtooth comb teeth, and the inclined angle of the inclined plane sawtooth comb teeth is 45 degrees.
Preferably, the surface of the vibration conveying groove is provided with a plurality of wave point-shaped bulges distributed in an array.
According to the technical scheme, after materials conveyed from an upstream conveying belt are vertically blanked and cut tobacco forms initial form accumulation at an inlet of a vibration conveying groove, a primary material shaping and guiding unit completes primary material shaping and guiding by matching with subsequent vibration conveying through a plurality of V-shaped guiding blocks with different specifications, and the primary material shaping and guiding unit mainly enables the cut tobacco to be loose and flat, and meanwhile, part of stems with high density fall to the lower layer of a material flow; the material leveling and homogenizing unit utilizes the triangular prism, so that stacked materials formed by stacking the tobacco shred flows at the tail part after primary shaping and flow guiding of the plurality of V-shaped flow guiding blocks can be leveled, the height fluctuation problem of the materials is improved, the materials are leveled, and possible silk stalk lumps or stacked hardening are eliminated; the secondary material shaping and guiding unit conducts and levels advancing materials through the V-shaped guiding blocks which are distributed more densely, so that the possible phenomenon of silk stalk agglomeration or accumulation is prevented; after shaping, flow guiding and leveling uniformly, basically screening and vibrating materials with higher density such as tobacco foam, small particle stems and the like to a lower layer, and when the material flow reaches a screen mesh, densely arranging mesh openings, screening the materials with higher density such as the tobacco foam, the small particle stems and the like to the lower layer; the material diversion layering unit comprises a horizontal sawtooth comb plate and an inclined plane sawtooth comb plate, when a material with cut tobacco and stem as main bodies reaches the material diversion layering unit, the horizontal sawtooth comb plate dredges the material into a middle layer, and the material silk shape of the middle layer shows that the length direction of the cut tobacco is in the advancing direction and is consistent with the length direction of the horizontal sawtooth comb plate; in addition, the length direction of the cut tobacco is vertical to the advancing direction, the cut tobacco is shunted to the upper layer through the crosspiece of the inclined plane sawtooth comb plate, finally, at the outlet of the device, the cut tobacco is shunted into three spatial layouts of a lower layer, a middle layer and an upper layer by combing, so that the material flow can realize the maximum loosening and leveling effects, the phenomena of cut tobacco agglomeration, agglomeration and hardening when the material to be winnowed enters the winnowed machine are solved, the problem of blockage of the material inlet of the winnowed machine is solved, better material supply performance is provided for the winnowed machine to carry out winnowed selection and flotation, the stalk rejection effect is further improved, and the utilization rate of the raw materials is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;
FIG. 2 is an enlarged view of the primary material shaping and guiding unit, the material leveling and homogenizing unit and the secondary material shaping and guiding unit in the invention;
FIG. 3 is an enlarged view of the structure of the particulate material sieving unit and the material flow guiding and layering unit in the present invention.
Description of reference numerals:
1: a vibration conveying trough; 2: a primary material shaping and guiding unit; 3: leveling and homogenizing the materials; 4: a secondary material shaping and guiding unit; 5: a particulate material screening unit; 51: a lower planar screen; 52: a gradient screen; 53: an upper planar screen; 54: a transverse oblong sieve pore; 55: longitudinal oblong sieve holes; 6: a material diversion layering unit; 61: a horizontal sawtooth comb plate; 62: a bevel sawtooth comb plate; 7: a V-shaped flow guide block a; 8: a V-shaped flow guide block b; 9: a V-shaped flow guide block c; 10: a V-shaped flow guide block d; 11: v type water conservancy diversion piece e.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "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 specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figure 1, a vibratory conveying and flow guiding screening device before tobacco material winnowing, including vibratory conveying groove 1, vibratory conveying groove 1 sets up the top at vibratory conveyor, vibratory conveying groove 1's discharge end is located the entrance side of air separator, can input tobacco material to air separator under the vibratory conveyor effect, tobacco material mainly includes smoked sheet, the pipe tobacco, the offal, the stalk silk, inflation silk etc., the device can solve the shredded tobacco agglomeration that treats that air separator material appears when getting into air separator, the phenomenon of caking, harden, eliminate air separator material entry jam problem, guarantee the material supply state when material gets into air separator, make air separator winnowing effect better.
The right-hand member of vibratory conveying groove 1 is the feed end, the left end is the discharge end, vibratory conveying groove 1 surface has set gradually elementary material plastic water conservancy diversion unit 2 from right to left, material levels even unit 3 and second grade material plastic water conservancy diversion unit 4, vibratory conveying groove 1's left end links up particulate matter material screening unit 5, particulate matter material screening unit 5's left end is provided with material water conservancy diversion layering unit 6, elementary material plastic water conservancy diversion unit 2 and second grade material plastic water conservancy diversion unit 3 all include the V type water conservancy diversion piece of a plurality of different specifications, V type water conservancy diversion piece is formed by the afterbody of two triangle pterygoid laminas is connected, and two triangle pterygoid laminas are that the afterbody faces the right and are fixed in vibratory conveying groove 1, and two triangle pterygoid lamina specifications in the same V type water conservancy diversion piece are the same completely, the triangle face of two triangle pterygoid laminas all is perpendicular with vibratory conveying groove 1 surface mutually.
As shown in fig. 2, specifically, the primary material shaping guide unit 2 includes a V-shaped guide block a7, a V-shaped guide block b8 and a V-shaped guide block c9 which are arranged from right to left in sequence, the specifications of the V-shaped guide block a7, the V-shaped guide block b8 and the V-shaped guide block c9 are gradually reduced, and the two triangular wing plates of each V-shaped guide block are arranged symmetrically with respect to the central axis of the vibration conveying chute 1. The material that comes from the upper reaches conveyer belt is through perpendicular blanking, and the leaf silk forms initial form at the vibrating conveyor entry and piles up, accomplishes elementary material plastic water conservancy diversion through elementary material plastic water conservancy diversion unit 2 at follow-up vibratory conveying stage, and the material that piles up loops through three specification V type water conservancy diversion piece that reduces gradually in the vibratory conveying process, and the material is shunted to both sides from the centre gradually, avoids the material to excessively concentrate, accomplishes the elementary plastic water conservancy diversion of material, and this part function mainly makes the pipe tobacco loose and level, and the partial stalk of the great density shakes in the conveying process and falls to the lower floor of material flow.
In this embodiment, the material leveling and uniformizing unit 3 is a triangular prism-shaped material uniformizing plate fixedly connected with the vibration conveying trough 1 at the bottom, the axis of the material uniformizing plate is perpendicular to the central axis of the vibration conveying trough 1, the bottom surface of the material uniformizing plate is fixedly attached to the surface of the vibration conveying trough 1, and two ends of the material uniformizing plate are abutted to two side surfaces of the vibration conveying trough 1. The material leveling and homogenizing unit 3 utilizes the triangular prism-shaped material equalizing plate, so that after primary shaping and diversion of three V-shaped diversion blocks, accumulated materials formed by superposition of tail tobacco shred flows are leveled upwards by the material equalizing plate, the height fluctuation problem of the materials is improved, the materials are leveled, and the possible problem of agglomeration of tobacco stalks or accumulation hardening is eliminated.
Specifically, the secondary material shaping and flow guiding unit 4 includes two rows of V-shaped flow guiding blocks d10 and V-shaped flow guiding blocks e11 arranged in a direction perpendicular to the central axis of the vibration conveying trough 1, wherein the number of the row of V-shaped flow guiding blocks d10 near the right end of the vibration conveying trough 1 is two, the positions of the row of V-shaped flow guiding blocks d10 are symmetrical with respect to the central axis of the vibration conveying trough 1, the specification of the V-shaped flow guiding blocks d10 is the same as that of the V-shaped flow guiding blocks c9 in the primary material shaping and flow guiding unit, the number of the row of V-shaped flow guiding blocks e11 near the left end of the vibration conveying trough 1 is four, the specification of the row of V-shaped flow guiding blocks d10 is smaller than that of the V-shaped flow guiding blocks d 11, and the four rows of V-shaped flow guiding blocks e11 are arranged in a pairwise symmetrical manner with respect to the central axis of the vibration conveying trough 1. The secondary material shaping and guiding unit 4 dredges and levels the advancing materials through the V-shaped guiding blocks which are distributed more densely, and further prevents possible filament stalks from agglomerating or stacking.
As shown in fig. 3, the right end of the particulate material sieving unit 5 is connected to the left end of the vibratory conveying trough 1, and the particulate material sieving unit 5 includes a lower plane screen 51, a gradient screen 52 and an upper plane screen 53 connected in sequence, wherein the lower plane screen 51 is connected to the vibratory conveying trough 1 and located in the same plane, the upper plane screen 53 is located above and to the left of the lower plane screen 51, the upper plane screen 53 is arranged in parallel with the lower plane screen 51, the gradient screen 52 is connected to both the lower plane screen 51 and the upper plane screen 53, and in this embodiment, the angle between the plane where the gradient screen 52 and the lower plane screen 51 are located is not less than 20 °. The surface of the particulate material screening unit 5 is distributed with a plurality of rows of sieve holes, the sieve holes comprise transverse long circular sieve holes 54 and longitudinal long circular sieve holes 55, the hole length of each transverse long circular sieve hole 54 is positioned in the direction perpendicular to the length direction of the particulate material screening unit 5, the hole length of each longitudinal long circular sieve hole 55 is positioned in the same direction as the length direction of the particulate material screening unit 5, and the transverse long circular sieve holes 54 and the longitudinal long circular sieve holes 55 are arranged in a two-row compartment mode. When the material stream arrives at particulate matter screening unit 5, through preceding plastic water conservancy diversion and level even, vibrate the great material sieve of density such as cigarette foam, tiny particle stalk stick to the lower floor basically, through horizontal long circle sieve mesh 54 and the vertical long circle sieve mesh 55 of interval arrangement this moment, can sieve the great material of density such as cigarette foam, tiny particle stalk stick to the lower floor, simultaneously through slope screen cloth 52 structural design, make the material stream throw the whereabouts on that the small amplitude is carried out, realize more apparent screening effect.
The material diversion layering unit 6 is arranged at the left end of the upper plane screen 53, is integrally connected with the upper plane screen, and comprises a horizontal sawtooth comb plate 61 and an inclined plane sawtooth comb plate 62 inclined relative to the horizontal sawtooth comb plate. The horizontal sawtooth comb plate 61 includes a plurality of horizontal comb teeth extending horizontally from the left end of the upper plane screen 53 at intervals, and the inclined plane sawtooth comb plate 62 includes a plurality of inclined comb teeth inclined with respect to the horizontal sawtooth comb plate 61, each inclined comb tooth being arranged at an interval with each horizontal comb tooth, extending upward from one side of the root of the horizontal comb tooth in an inclined manner, and the angle of inclination of the inclined comb tooth with respect to the horizontal comb tooth being 45 °. When a material taking cut tobacco and stem sticks as main bodies passes through the unit, the horizontal sawtooth comb plate 61 channels the material into a middle layer, and the shape of the material silk on the middle layer shows that the length direction of the cut tobacco is consistent with the advancing direction and the arrangement of the cut tobacco is consistent with the length direction of the horizontal comb teeth; in addition, the material with the length direction of the cut tobacco vertical to the advancing direction is shunted to the upper layer through the blockage of the 45-degree inclined comb teeth. Finally, at the outlet of the vibrating conveyor, the material is combed, guided and shunted into three spatial layouts including a lower-layer small-particle material, a middle-layer longitudinal material dredging layer and an upper-layer transverse material dredging layer, so that the material flow can achieve the maximum loosening and leveling effects, better material supply performance is provided for the winnowing machine to perform winnowing and flotation, and the stem rejecting effect is further improved.
In this embodiment, the surface of the vibration conveying trough 1 is provided with a plurality of wave point-shaped protrusions distributed in an array, so that when the vibration conveying trough 1 is used for vibration conveying, the friction force between the trough body and the material flow can be increased, and the situation that the primary material shaping and guiding unit 2, the material leveling and homogenizing unit 3 and the secondary material shaping and guiding unit 4 cannot normally exert the shaping and guiding effects due to too fast flow is prevented.
To sum up, the device has specifically utilized the optimization combination of spare parts such as not unidimensional V type water conservancy diversion piece, homogenizing board, slope screen cloth, sawtooth comb board and the bellied vibratory conveying groove of area wave point in the spare part design, has solved the easy leaf silk agglomeration, the phenomenon of caking, the harden that appear when treating the selection by winnowing material entering air separator, eliminates air separator material entry jam problem. In addition, through three-layer flow guide screening of cut tobacco logistics, namely the small particle materials on the lower layer, the longitudinal material dredging layer on the middle layer and the transverse material dredging layer on the upper layer, the materials in unit volume are looser. The device has the advantages of simple and convenient equipment maintenance, convenient secondary characteristic transformation, good cost control capability, high equipment flexibility adaptation degree and the like, has more obvious winnowing effect, and can further improve the rejection rate of the stems and improve the utilization rate of raw materials.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A vibrating conveying and flow guiding screening device before tobacco material winnowing, which comprises a vibrating conveying groove, the vibrating conveying groove is arranged at the top of the vibrating conveyor, the discharge end of the vibrating conveying groove is positioned at the inlet side of the air separator, it is characterized in that a primary material shaping and guiding unit, a material leveling and homogenizing unit and a secondary material shaping and guiding unit are sequentially arranged in the vibration conveying groove from a feeding end to a discharging end, the discharge end of the vibration conveying groove is connected with a particulate material screening unit, the tail end of the particulate material screening unit is provided with a material diversion layering unit, the primary material shaping and guiding unit and the secondary material shaping and guiding unit both comprise a plurality of V-shaped guiding blocks with different specifications, the V-shaped flow guide block is formed by connecting the tails of two triangular wing plates, and the tails of the two triangular wing plates are fixed in the vibration conveying groove towards the direction of the feed end; the material leveling and homogenizing unit is a triangular prism-shaped material homogenizing plate, the bottom of which is fixedly connected with the vibration conveying groove; the surface of the particulate material screening unit is provided with a plurality of screen holes; the material diversion layering unit comprises a horizontal sawtooth comb plate and an inclined plane sawtooth comb plate inclined relative to the horizontal sawtooth comb plate.
2. The pre-winnowing vibratory conveying and flow guiding screening device of tobacco material as claimed in claim 1, wherein two of said triangular wing plates in the same V-shaped flow guiding block have the same size, and the triangular surfaces of both of said triangular wing plates are perpendicular to the surface of said vibratory conveying trough.
3. The pre-winnowing vibratory conveying and flow guiding screening device of tobacco materials according to claim 2, wherein the primary material shaping and flow guiding unit comprises three V-shaped flow guiding blocks with different specifications, the specifications of the three V-shaped flow guiding blocks are gradually reduced from the direction close to the feeding end to the direction close to the discharging end of the vibratory conveying trough, and two triangular wing plates in each V-shaped flow guiding block are symmetrically arranged about the central axis of the vibratory conveying trough.
4. The pre-winnowing vibratory conveying and flow-guiding screening device of tobacco materials according to claim 3, wherein the secondary material shaping flow-guiding unit comprises two rows of V-shaped flow-guiding blocks arranged in a direction perpendicular to the central axis of the vibratory conveying trough, wherein the number of the first row of V-shaped flow-guiding blocks near the feeding end of the vibratory conveying trough is two, the positions of the first row of V-shaped flow-guiding blocks are symmetrical with respect to the central axis of the vibratory conveying trough, the specifications of the first row of V-shaped flow-guiding blocks are the same as the specifications of the V-shaped flow-guiding blocks near the discharging end of the vibratory conveying trough in the primary material shaping flow-guiding unit, the number of the second row of V-shaped flow-guiding blocks near the discharging end of the vibratory conveying trough is four, the specifications of the second row of V-shaped flow-guiding blocks are smaller than the specifications of the first row of V-shaped flow-guiding blocks, and the V-shaped flow-guiding blocks in the second row are symmetrical with respect to the central axis of the vibratory conveying trough in pairs.
5. The pre-winnowing vibratory conveying and flow guiding screening device of tobacco materials according to claim 1, wherein the axis of the material homogenizing plate is perpendicular to the central axis of the vibratory conveying trough, the bottom surface of the material homogenizing plate is attached to the surface of the vibratory conveying trough, and two ends of the material homogenizing plate are abutted against two side surfaces of the vibratory conveying trough.
6. The device for vibratory conveying and flow-guiding screening before tobacco material winnowing of claim 1, wherein the particulate material screening unit comprises a lower plane screen, a gradient screen and an upper plane screen which are connected in sequence, wherein the lower plane screen is arranged in parallel with the upper plane screen, the lower plane screen is connected with the discharge end of the vibratory conveying trough, and the material flow-guiding layering unit is positioned at the tail end of the upper plane screen.
7. The pre-winnowing vibratory conveying and flow directing screening device of claim 6, wherein said sloped screen is at an angle of no less than 20 ° to the plane of said lower planar screen.
8. The pre-winnowing vibratory conveying and flow guiding screening device for tobacco materials according to claim 6, wherein the particulate material screening unit is provided with a plurality of rows of transverse oblong sieve holes and longitudinal oblong sieve holes which are arranged at intervals.
9. The pre-winnowing vibratory conveying and deflector screening device of claim 6, wherein said horizontal sawtooth comb plate includes a plurality of spaced apart horizontal teeth extending from an end of said upper planar screen, said inclined sawtooth comb plate includes a plurality of inclined teeth inclined with respect to said horizontal sawtooth comb plate, each of said inclined teeth being spaced apart from each of said horizontal teeth, and said inclined teeth being inclined at an angle of 45 ° with respect to said horizontal teeth.
10. The pre-winnowing vibratory conveying and flow directing screening device of tobacco material as claimed in claim 1, wherein the vibratory conveying trough has a plurality of wave point shaped protrusions distributed in an array on the surface thereof.
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| CN202111482781.9A CN114011719A (en) | 2021-12-07 | 2021-12-07 | Vibration conveying and flow guiding screening device before tobacco material winnowing |
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| CN202111482781.9A CN114011719A (en) | 2021-12-07 | 2021-12-07 | Vibration conveying and flow guiding screening device before tobacco material winnowing |
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Cited By (1)
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| CN116076774A (en) * | 2023-03-06 | 2023-05-09 | 江西中烟工业有限责任公司 | Device for removing impurities and sorting in tobacco shred recycling and online blending |
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