CN203448306U - Wind pressure type three-bin pneumatic separator - Google Patents
Wind pressure type three-bin pneumatic separator Download PDFInfo
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- CN203448306U CN203448306U CN201320341300.7U CN201320341300U CN203448306U CN 203448306 U CN203448306 U CN 203448306U CN 201320341300 U CN201320341300 U CN 201320341300U CN 203448306 U CN203448306 U CN 203448306U
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Abstract
The utility model relates to a wind pressure type three-bin pneumatic separator, which is formed by mutually serially connecting two separation bin and a blanking bin. The wind pressure type three-bin pneumatic separator is a pneumatic separator with integrated dynamic wind pressure, and is especially suitable for pneumatically separating easily-broken materials and belongs to pneumatic separation equipment. The side wall of the upper part of the first separation bin is communicated with the side wall of the upper part of the second separation bin, the side wall of the upper part of the second separation bin is communicated with the side wall of the upper part of the blanking bin, so as to form a three-bin serial-connected communicated structure. A transfer network belt is horizontally placed on channel ports communicated with the inner walls of the three bins, and the channel port communicated with the first separation bin and the second separation bin is provided with a wind curtain for isolating the two bins, and the channel port communicated with the second separation bin and the blanking bin is also provided with a wind curtain for isolating the two bins.
Description
Technical field
The utility model relates to a kind of wind pressure type three storehouse wind and divides device, especially a kind of two separation bins and blanking storehouse of utilizing is connected in series, the wind with integrated dynamic pressure divides device, is specially adapted to hold breakable material and carries out pneumatic separating, belongs to wind sorting equipment.
Background technology
Air-flow wind divides principle: certain material of flotation in air-flow, set a certain air velocity, make floating velocity moving upward compared with light fraction lower than setting air velocity in material, and floating velocity moves downward higher than the heavier part of setting air velocity in material, make material in air-flow by from being heavier and lighter two parts.This principle is widely used in every profession and trade, as CN 201454852 U disclose the device that a kind of pneumatic separating goes out heavier elite seed.
CN 2922496 Y disclose heavier offal invalid in a kind of pneumatic separating pipe tobacco and the equipment of foreign material, and effective pipe tobacco lighter in this equipment is taken away by wind-force, then by pipeline, carry gentle material separating device that pipe tobacco is separated;
CN 102626257 A and CN 2791087 Y disclose the equipment that uses pneumatic separating smoked sheet and offal mixed material, and the effective blade sub-electing is used rotation type blanking device to carry out Conveyance after wind send;
CN 101053868A discloses a kind of double-chamber type pneumatic separating tobacco equipment, it uses different air velocities to carry out secondary sorting to material in two storehouses, effectively light matter material is taken away by wind-force, then by pipeline, carries gentle material separating device that light matter material is separated.
The light effectively material that above equipment pneumatic separating goes out all will be used pipeline to carry gentle material separating device that light matter material is separated, in conveying and separation process meeting, material moisture is reduced, mechanical friction is fiercer, can cause material size to diminish, and produce a large amount of broken ends, reduced material use value.Above device can only complete sorting function simultaneously, all needs feeder to complete Conveyance work, and corresponding equipment is complicated, energy consumption is high.
In addition, be all a large amount of, to use pneumatic separators in beating and double roasting or during Primary Processing, but doffer used is cross gate-type feeder, tobacco leaf silk when by feeder all unavoidable be squeezed thereby produce make broken.Material and wind Long contact time, moisture loss is large, easily makes broken with pipeline collision.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of two separation bins and blanking storehouse of utilizing to be connected in series, the wind pressure type three storehouse wind with integrated dynamic pressure divide device, it is by high speed foraminous conveyer absorption material, can carry out four separation processes of twice liang of storehouse positive/negative-pressure, the integrated dynamic pressure wind subset of the meticulous separated tobacco leaf tobacco shred bulking stalk stem of energy etc.
The utility model wind pressure type three storehouse wind divide device to be achieved through the following technical solutions.
Wind pressure type three storehouse wind divide device by inlet scoop (1), transmit guipure (2), charging aperture (3), the first separation bin (4), the sieve (5) that shakes, damping sheet (6), for the first time air inlet (7), first assist air outlet (8), for the first time reject thing discharging opening (9), for the second time air inlet (10), reject thing discharging opening (11) for the second time; Discharging opening (12); Hairbrush (13), blanking storehouse (14); The second separation bin (15), the second auxiliary air outlet (16) form,
The upper portion side wall of the first separation bin (4) communicates with the upper portion side wall of the second separation bin (15), the upper portion side wall of the second separation bin (15) communicates with blanking storehouse (14) upper portion side wall again, form the structure that three storehouse series connection communicate, transmit guipure (2) placement and be arranged on the passway that two separation bins communicate with inwall three storehouses in a blanking storehouse, transmitting top that guipure (4) is positioned at charging aperture (3) is and is horizontally disposed with, the place, passway that the first separation bin (4) communicates with the second separation bin (15) is provided with the air curtain in isolation two storehouses, the place, passway that the second separation bin (15) communicates with blanking storehouse (14) is also provided with the air curtain in isolation two storehouses,
Bottom, blanking storehouse (14) arranges discharging opening (12), the top of each separation bin (4,15) is respectively provided with negative-pressure air-suction mouth (1), the first separation bin (4) sidewall arranges charging aperture (3) over against the bottom of transmitting guipure (4) one end, the bottom of the first separation bin (4) and the second separation bin (15) arranges the sieve (5) that shakes with mesh, shake under sieve (5) damping sheet (6) with mesh is set, the air inlet (7,10) over against each separation bin (4,15) lower port is installed in damping sheet (6) below, and sieve (5) end that shakes connects rejects thing discharging opening (12);
Air curtain structure is assisted air inlet (16) for the phase port bottom joining in the second separation bin (15) and blanking storehouse (14) arranges second, and first the phase port bottom that joins of separation bin (4) and the second separation bin (15) the first auxiliary air inlet (8) is set, on each auxiliary air inlet (8,16), arrange a series of upwards vertically over against the exhaust vents that transmit guipure;
Little 100～the 2100Pa of negative pressure pressure ratio standard atmospheric pressure that inlet scoop (1) is located, large 100～2000 Pa of malleation pressure ratio standard atmospheric pressure at mesh place of sieve (5) shake, the lower air inlet connecting of damping sheet (6) is vertical corner structure, and the air intake direction of horizontal segment is consistent with the moving direction that transmits guipure; Pressure in blanking storehouse (14) is standard atmospheric pressure, and material freely falling body falls.
The first separation bin (4) or the first separation bin (15) are all the horn-like of end opening that be greater than suitable for reading, and the sloped sidewall of each separation bin (4,15) is with angle demodulator, and damping sheet (6) adopts pull chute to be arranged on below the sieve (5) that shakes.
Transmit guipure (2) and dispose correction and tensioning apparatus; The end that transmission guipure (2) is arranged in blanking storehouse (14) is provided with cleaning brush.
By replacing the damping sheet (6) of the first separation bin (4) or the second separation bin (15) bottom, can regulate the malleation wind speed that enters the first separation bin (4) or the second separation bin (15), make the wind section in two separation bins (4,15) be different blast and wind speed; Thereby make the first separation bin (4) of facing mutually and the second separation bin (15), and the second separation bin (15) with blanking storehouse (14) in different pressures.
Adopt the air inlet (7,10) of vertical corner structure, make the pressure balance face in each separation bin (4,15) form left low right high form, each separation bin (4,15) is the horn-like of end opening that be greater than suitable for reading, the sloped sidewall of separation bin (4,15) is with angle demodulator, and damping sheet (6) adopts pull chute to be arranged on below the groove that shakes.
Each separation bin (4,15) is in bottom malleation, top negative pressure state, and two separation bins (4,15) utilize positive/negative-pressure to carry out four separation to material; Positive and negative pressure balance face in each separation bin (4,15) is adjustable.
Adjacent the first separation bin (4) and the second separation bin (15), and by dividing plate, separated between the second separation bin (15) and blanking storehouse (14), and have material channel to be connected.
Little 100～the 2100Pa of pressure ratio standard atmospheric pressure that inlet scoop (1) is located, large 100～2000 Pa of mesh place pressure ratio standard atmospheric pressure of sieve (5) shake, the lower air inlet connecting of damping sheet (6) is vertical corner structure, and the air intake direction of horizontal segment is consistent with the moving direction that transmits guipure (2); Pressure in blanking storehouse (14) is standard atmospheric pressure.
The end that transmission guipure (2) is arranged in blanking storehouse (14) is provided with cleaning brush.: transmit guipure (2) and dispose correction and tensioning apparatus.
The utility model separation bin claims again wind separating bin, the plan separation of material such as tobacco leaf tobacco shred bulking stalk stem are in jigging conveyer is conveyed into the first separation bin (4), effect due to inertia, material is from conveyer end to previous crops parabolic motion, in this process, the material of part light specific gravity is at the first separation bin (4) inlet scoop, top (1) suction function, and the material of light specific gravity is attracted to transmit on guipure (2) bottom and is brought into the second separation bin (15); Another part material is lower backwardness naturally, due to the first separation bin (4) bottom shake sieve (5) and the malleation wind active force of air inlet (7) for the first time, the material falling, by upthrow again, is also attracted to and transmits on guipure (2) bottom and enter the second separation bin (15); Other underproof material sieve (5) that shakes through bottom is carried, respectively from rejecting for the first time thing discharging opening (9) and rejecting for the first time thing discharging opening (11) the side direction derivation sieve that shakes.
Enter the material of the second separation bin (15) because Action of Gravity Field falls again, because the second separation bin (15) has and the different blast of the first separation bin (4), the positive wine pressure of air outlet (10) blows afloat the material falling again for the second time, the material that wherein a part of proportion is lighter, due to malleation, negative pressure alternating action, is again adsorbed onto transmission guipure (2) and goes up and be brought into blanking storehouse (14).Malleation is the wind that air outlet (10) is blown into for the second time, and negative pressure is the wind that the inlet scoop (1) at the second separation bin (15) top sucks.The defective material sieve (5) that shakes through bottom, derives by discharging opening 12 side direction the sieve that shakes.Enter the material in blanking storehouse (14) due to the effect of gravity, naturally fall to discharging opening (12).
The utility model beneficial effect is: in an equipment, be connected in series two separation bins and a blanking storehouse, realization is to four of material sortings, promoted the efficiency of separation, the ability of material handling in lifting means unit width size, be that equipment feedstock direction unit width size can be processed the more material of high flow capacity, therefore when the material of selection by winnowing same traffic, compare with miscellaneous equipment, can reduce equipment size, reach to reduce to divide and select air quantity, efficiently, low energy consumption, wind simple in structure, low material loss divide device, the effect of realization reduction energy consumption.
Accompanying drawing explanation
Fig. 1 is structural diagrams intention of the present utility model.
Each label in figure: 1-inlet scoop, 2-transmission guipure; 3-charging aperture, the 4-the first separation bin; 5-sieve shakes; 6-damping sheet; 7-air inlet for the first time; The 8-the first auxiliary air outlet; 9-reject for the first time thing discharging opening; 10-air inlet for the second time; 11-reject for the second time thing discharging opening; 12-discharging opening; 13-hairbrush, 14-blanking storehouse; The 15-the second separation bin; The 16-the second auxiliary air outlet.
the specific embodiment:
The utility model material enters separation bin by conveyer belt or flat throwing of the sieve that shakes by charging aperture, and wherein size is less than and transmits the dust of guipure online hole dimension and broken end and be subject to suction function to pass the transmission guipure that case twists in separation bin to surmount every difficulty and remove from inlet scoop dust pelletizing system; And size is greater than the loose light matter material that transmits guipure mesh and is subject to suction function and is attracted to and transmits guipure bottom; The material that all the other weight are larger is lifted by malleation wind-force in dropping process to blow floating, gradually loose and with heavier feed separation, then by malleation wind, lifted to pressure balance face, by negative-pressure adsorption, transmitted on guipure; Leftover materials are fallen bottom and are shaken sieve above by vibrating transportation, vibrating transportation active force and below under the acting in conjunction of malleation air-flow, leftover materials are further loose, and light matter material is wherein lifted to pressure balance face by malleation wind, by negative-pressure adsorption, transmitted on guipure; Be adsorbed on the material of transport network belt surface, along with transmitting guipure fortune merit, be brought to blanking storehouse, at normal normal atmosphere, depress and be subject to gravity to fall into discharging opening; The rejecting thing discharging opening that heavier material is delivered to by the sieve that shakes the sieve opening part that shakes is excluded.
The second auxiliary air inlet 16 is between the second separation bin 15 and blanking storehouse 14, its uniform exhaust vent blows out malleation air-flow, there is the effect of isolation separation bin and blanking storehouse inner air pressure, make blanking storehouse inner air pressure identical with the air pressure of extraneous standard atmospheric pressure, and continue to lift material when material enters blanking storehouse leading portion, material is concentrated and dropped down onto the middle effect of discharging opening.
The first auxiliary air inlet 16 is between the second separation bin 15 and the first separation bin 4, its uniform exhaust vent blows out malleation air-flow, there is the effect of isolation the first separation bin and the second separation bin inner air pressure, make the second separation bin 15 inner air pressures and the first separation bin 4 there is certain pressure poor
The three storehouse wind that the utility model adopts 4,15 and blanking storehouses of separation bin 14 of two series connection to form divide device, wherein two separation bins (claiming again wind separating bin) are connected with blanking storehouse, allow material air-separating Distance Shortened, the wind divisional processing time is short, can effectively avoid making loss broken and minimizing moisture content, reduce energy consumption.
The lower inside of each separation bin of the utility model is in barotropic state, inside upper part is all in negative pressure state, each separation bin can utilize positive/negative-pressure effect to carry out secondary separation to material like this, two separation bins 4,15 of serial connection just can carry out four separation, wind separation is more thorough, better effects if.
The material that transmits guipure 2 surfaces enters and has lost top negative-pressure sucking behind blanking storehouse 14 and below malleation is lifted, separated with transmission guipure under self gravitation effect, and transmitting under the effect of inertia of the guipure direction of motion, path falls to discharging opening 12 parabolically, tangent rotating brushes and the transport network band with it that transmits that guipure 2 ends fill carries out reverse relative motion, rotating brushes, by transmitting under the whole brushes of the material adhering on guipure, drops down onto discharging opening 12.
The utility model can be realized by adjusting wind separating bin specification and guipure speed the feed separation of different flow: can be by regulating blast, wind speed to realize the feed separation of different materials.
The utility model has been avoided traditional Conveyance and the mechanical friction of gas lock discharge mechanism to particle package material, has eliminated size reduction and chip that mechanical friction causes material fragmentation to produce, thereby has improved the utilization rate of material.
It is the wind-force separation technology field compared with heavy material that the utility model is equally applicable to live part.
Claims (10)
1. wind pressure type three storehouse wind divide device, it is characterized in that wind pressure type three storehouse wind divide device by inlet scoop (1), transmit guipure (2), charging aperture (3), the first separation bin (4), the sieve (5) that shakes, damping sheet (6), for the first time air inlet (7), first assist air outlet (8), for the first time reject thing discharging opening (9), for the second time air inlet (10), reject thing discharging opening (11) for the second time; Discharging opening (12); Hairbrush (13), blanking storehouse (14); The second separation bin (15), the second auxiliary air outlet (16) form,
The upper portion side wall of the first separation bin (4) communicates with the upper portion side wall of the second separation bin (15), the upper portion side wall of the second separation bin (15) communicates with blanking storehouse (14) upper portion side wall again, form the structure that three storehouse series connection communicate, transmit guipure (2) placement and be arranged on the passway that two separation bins communicate with inwall three storehouses in a blanking storehouse, transmitting top that guipure (4) is positioned at charging aperture (3) is and is horizontally disposed with, the place, passway that the first separation bin (4) communicates with the second separation bin (15) is provided with the air curtain in isolation two storehouses, the place, passway that the second separation bin (15) communicates with blanking storehouse (14) is also provided with the air curtain in isolation two storehouses,
Bottom, blanking storehouse (14) arranges discharging opening (12), the top of each separation bin (4,15) is respectively provided with negative-pressure air-suction mouth (1), the first separation bin (4) sidewall arranges charging aperture (3) over against the bottom of transmitting guipure (4) one end, the bottom of the first separation bin (4) and the second separation bin (15) arranges the sieve (5) that shakes with mesh, shake under sieve (5) damping sheet (6) with mesh is set, the air inlet (7,10) over against each separation bin (4,15) lower port is installed in damping sheet (6) below, and sieve (5) end that shakes connects rejects thing discharging opening (12);
Air curtain structure is assisted air inlet (16) for the phase port bottom joining in the second separation bin (15) and blanking storehouse (14) arranges second, and first the phase port bottom that joins of separation bin (4) and the second separation bin (15) the first auxiliary air inlet (8) is set, on each auxiliary air inlet (8,16), arrange a series of upwards vertically over against the exhaust vents that transmit guipure.
2. wind pressure type three storehouse wind according to claim 1 divide device, it is characterized in that the little 100～2100Pa of negative pressure pressure ratio standard atmospheric pressure locating inlet scoop (1), large 100～2000 Pa of malleation pressure ratio standard atmospheric pressure at mesh place of sieve (5) shake, the lower air inlet connecting of damping sheet (6) is vertical corner structure, and the air intake direction of horizontal segment is consistent with the moving direction that transmits guipure; Pressure in blanking storehouse (14) is standard atmospheric pressure, and material freely falling body falls.
3. wind pressure type three storehouse wind according to claim 1 divide device, it is characterized in that the first separation bin (4) or the first separation bin (15) are all the horn-like of end opening that be greater than suitable for reading, the sloped sidewall of each separation bin (4,15) is with angle demodulator, and damping sheet (6) adopts pull chute to be arranged on below the sieve (5) that shakes.
4. wind pressure type three storehouse wind according to claim 1 divide device, it is characterized in that transmitting guipure (2) and dispose correction and tensioning apparatus; The end that transmission guipure (2) is arranged in blanking storehouse (14) is provided with cleaning brush.
5. wind pressure type three storehouse wind according to claim 1 divide device, it is characterized in that by replacing the damping sheet (6) of the first separation bin (4) or the second separation bin (15) bottom, can regulate the malleation wind speed that enters the first separation bin (4) or the second separation bin (15), make the wind section in two separation bins (4,15) be different blast and wind speed; Thereby make the first separation bin (4) of facing mutually and the second separation bin (15), and the second separation bin (15) with blanking storehouse (14) in different pressures.
6. wind pressure type three storehouse wind according to claim 1 divide device, it is characterized in that adopting the air inlet (7,10) of vertical corner structure, make the pressure balance face in each separation bin (4,15) form left low right high form, each separation bin (4,15) is the horn-like of end opening that be greater than suitable for reading, the sloped sidewall of separation bin (4,15) is with angle demodulator, and damping sheet (6) adopts pull chute to be arranged on below the groove that shakes.
7. wind pressure type three storehouse wind according to claim 1 divide device, it is characterized in that each separation bin (4,15) is in bottom malleation, top negative pressure state, and two separation bins (4,15) utilize positive/negative-pressure to carry out four separation to material; Positive and negative pressure balance face in each separation bin (4,15) is adjustable.
8. wind pressure type three storehouse wind according to claim 1 divide device, it is characterized in that adjacent the first separation bin (4) and the second separation bin (15), and by dividing plate, are separated between the second separation bin (15) and blanking storehouse (14), and have material channel to be connected.
9. wind pressure type three storehouse wind according to claim 1 divide device, it is characterized in that the little 100～2100Pa of pressure ratio standard atmospheric pressure locating inlet scoop (1), large 100～2000 Pa of mesh place pressure ratio standard atmospheric pressure of sieve (5) shake, the lower air inlet connecting of damping sheet (6) is vertical corner structure, and the air intake direction of horizontal segment is consistent with the moving direction that transmits guipure (2); Pressure in blanking storehouse (14) is standard atmospheric pressure.
10. wind pressure type three storehouse wind according to claim 1 divide device, and its feature, being to transmit the end that guipure (2) is arranged in blanking storehouse (14) to be provided with cleaning brush, transmits guipure (2) and disposes correction and tensioning apparatus.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320341300.7U CN203448306U (en) | 2013-06-15 | 2013-06-15 | Wind pressure type three-bin pneumatic separator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320341300.7U CN203448306U (en) | 2013-06-15 | 2013-06-15 | Wind pressure type three-bin pneumatic separator |
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| CN203448306U true CN203448306U (en) | 2014-02-26 |
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| CN201320341300.7U Expired - Fee Related CN203448306U (en) | 2013-06-15 | 2013-06-15 | Wind pressure type three-bin pneumatic separator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272776A (en) * | 2013-06-15 | 2013-09-04 | 红塔烟草(集团)有限责任公司 | Wind pressure type three-cabin wind separator |
| CN104824828A (en) * | 2015-05-13 | 2015-08-12 | 云南昆船数码科技有限公司 | Multifunctional tobacco leaf fine selection device |
| CN104489895B (en) * | 2014-12-03 | 2016-08-24 | 河南中烟工业有限责任公司 | In cabo, flax silk removes segregation apparatus |
| CN106072758A (en) * | 2016-07-25 | 2016-11-09 | 武汉虹之彩包装印刷有限公司 | A kind of device cleaning filter screen for cigarette machine Pneumatic silk feeding equipment |
| CN106072759A (en) * | 2016-07-25 | 2016-11-09 | 武汉虹之彩包装印刷有限公司 | A kind of cigarette machine Pneumatic silk feeding equipment with the device cleaning filter screen |
| CN107019727A (en) * | 2017-04-13 | 2017-08-08 | 阜阳师范学院 | A kind of device of the expanded fragrant rod seed of new type low temperature |
| CN108940864A (en) * | 2018-06-26 | 2018-12-07 | 红塔烟草(集团)有限责任公司 | Material sorting device |
| CN110950089A (en) * | 2019-12-28 | 2020-04-03 | 姚春祥 | Pollution-free material conveying air conveying system for processing PVC (polyvinyl chloride) products |
| CN112044764A (en) * | 2020-09-01 | 2020-12-08 | 许婷婷 | Industrial raw material grading dust removal device |
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- 2013-06-15 CN CN201320341300.7U patent/CN203448306U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272776A (en) * | 2013-06-15 | 2013-09-04 | 红塔烟草(集团)有限责任公司 | Wind pressure type three-cabin wind separator |
| CN103272776B (en) * | 2013-06-15 | 2016-07-06 | 红塔烟草(集团)有限责任公司 | A kind of Wind pressure type three-cabin wind separator |
| CN104489895B (en) * | 2014-12-03 | 2016-08-24 | 河南中烟工业有限责任公司 | In cabo, flax silk removes segregation apparatus |
| CN104824828A (en) * | 2015-05-13 | 2015-08-12 | 云南昆船数码科技有限公司 | Multifunctional tobacco leaf fine selection device |
| CN104824828B (en) * | 2015-05-13 | 2016-08-24 | 云南昆船数码科技有限公司 | A kind of multifunctional tobacco leaf selecting device |
| CN106072759A (en) * | 2016-07-25 | 2016-11-09 | 武汉虹之彩包装印刷有限公司 | A kind of cigarette machine Pneumatic silk feeding equipment with the device cleaning filter screen |
| CN106072758A (en) * | 2016-07-25 | 2016-11-09 | 武汉虹之彩包装印刷有限公司 | A kind of device cleaning filter screen for cigarette machine Pneumatic silk feeding equipment |
| CN106072759B (en) * | 2016-07-25 | 2017-08-18 | 武汉虹之彩包装印刷有限公司 | A kind of cigarette machine Pneumatic silk feeding equipment with the device for cleaning filter screen |
| CN106072758B (en) * | 2016-07-25 | 2017-09-01 | 武汉虹之彩包装印刷有限公司 | A kind of device of cleaning filter screen for cigarette machine Pneumatic silk feeding equipment |
| CN107019727A (en) * | 2017-04-13 | 2017-08-08 | 阜阳师范学院 | A kind of device of the expanded fragrant rod seed of new type low temperature |
| CN108940864A (en) * | 2018-06-26 | 2018-12-07 | 红塔烟草(集团)有限责任公司 | Material sorting device |
| CN110950089A (en) * | 2019-12-28 | 2020-04-03 | 姚春祥 | Pollution-free material conveying air conveying system for processing PVC (polyvinyl chloride) products |
| CN110950089B (en) * | 2019-12-28 | 2020-07-28 | 佛山市华红包装材料有限公司 | Pollution-free material conveying air conveying system for processing PVC (polyvinyl chloride) products |
| CN112044764A (en) * | 2020-09-01 | 2020-12-08 | 许婷婷 | Industrial raw material grading dust removal device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
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