CN106938248B - A bright leaf air separator of drum-type for making tea - Google Patents
A bright leaf air separator of drum-type for making tea Download PDFInfo
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- CN106938248B CN106938248B CN201710249187.2A CN201710249187A CN106938248B CN 106938248 B CN106938248 B CN 106938248B CN 201710249187 A CN201710249187 A CN 201710249187A CN 106938248 B CN106938248 B CN 106938248B
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- roller
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- zone
- winnowing
- air
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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
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/06—Treating tea before extraction; Preparations produced thereby
-
- 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
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Tea And Coffee (AREA)
Abstract
The invention discloses a drum-type fresh leaf winnowing machine for tea making, which comprises a lifter, a vibration material conveyer, a winnowing chamber and a drum mechanism. But the top of air selection chamber is equipped with the shutter of automatic adjustment blade angle, the front portion and the rear portion of air selection chamber are equipped with air-blower and suction fan respectively, the bottom of air selection chamber is equipped with the conveyer belt, the inside of air selection chamber is equipped with the cylinder mechanism that has rotatory cylinder, when the bright leaf is through rotatory cylinder selection by winnowing, the sieve mesh screening of rotatory cylinder of rethread, three four leaves in a bud fall into the first conveyer belt of district in the place ahead, two leaves in a bud fall into two district's conveyer belts, a bud leaf falls into three district's conveyer belts, monolithic and bud head are blown to the rear, fall into four district's conveyer belts, realize the hierarchical selection by winnowing of the bright leaf of tealeaves. The invention combines winnowing and screening, adopts a variable frequency motor, and realizes intelligent adjustment. Simple structure, easy operation and suitable popularization and application.
Description
Technical Field
The invention belongs to the field of tea equipment, and particularly relates to a drum-type fresh leaf winnowing machine for tea making.
Background
The traditional tea winnowing machine is mainly used for winnowing finished tea during tea processing, the moisture content of the finished tea is about 6 percent, the finished tea is in a granular structure, the mutual entanglement and the hooking are less, the fluidity is good, and the winnowing machine is mainly used for removing light leaves, floating leaves, scorched leaves and the like in the finished tea, so that the effect is good; the winnowing machine for finished tea generally adopts horizontal blowing, the airflow direction is horizontal, the retention time of tea leaves in the air is short, but the specific gravity of light leaves, floating leaves and scorched leaves is greatly different from that of more compact tea leaves, so that the separation effect can be achieved. The invention discloses a wind separator for classifying fresh tea leaves, which is designed for dividing the fresh tea leaves into the classified fresh tea leaves by using the designed fresh tea leaf wind separator.
Disclosure of Invention
The invention mainly aims to solve the problems and provides a drum-type fresh leaf winnowing machine for tea making.
A drum-type fresh leaf winnowing machine for tea making comprises a lifter 1, a vibration conveyor 2, a winnowing chamber 3 and a drum mechanism 4. The winnowing chamber 3 is a cuboid box-shaped structure, the front and the back are in the length direction, the left and the right are in the width direction, a front side plate, a back side plate, a left side plate and a right side plate are arranged, a louver is arranged at the top, and a conveying belt is arranged at the bottom. The roller mechanism 4 is arranged inside the air separation chamber 3, the roller mechanism 4 is provided with a roller 41 driven by a speed reduction motor to rotate, the roller 41 is in a cylindrical shape welded by stainless steel bars, and gaps among the stainless steel bars form sieve pores of the roller. The upper portion of preceding curb plate is equipped with bright leaf entry, the export of bright leaf entry linkage vibration feeding machine 2, the exit linkage lifting machine 1 of the access connection of vibration feeding machine 2, preceding curb plate downside is equipped with air-blower 31, the upside of posterior lateral plate is equipped with suction fan 32, and the downside is equipped with vibration ejection of compact machine 33.
When the pneumatic fresh leaf winnowing machine is used, fresh leaves enter the roller 41 of the winnowing chamber 3 through the hoister 1 and the vibration conveyor 2, the blower 31 blows the fresh leaves to the rear upper part of the roller 41, the fresh leaves drop in a parabolic shape, the suction fan 32 and the louver at the top of the winnowing chamber adjust the strength and direction of wind, after the fresh leaves are winnowed, the fresh leaves with different grades fall into the conveying belt below from different areas of the rotating roller 41, and a part of single leaves in the fresh leaves are sent out from the vibration discharging machine 33, so that the grading winnowing of the fresh leaves is realized.
The technical scheme for further limiting is as follows:
The roller 41 is arranged in an inclined shape with a high front part and a low back part, and the included angle between the axis of the roller 41 and the horizontal line is 10-15 degrees.
The rear riding wheel 423 comprises a circular riding wheel 4231, a stopping shoulder 4232, a riding wheel shaft 4233 and a wheel support 4234, wherein the stopping shoulder 4232 is arranged on one side edge of the circular riding wheel 4231, the riding wheel shaft 4233 is arranged in the center of the circular riding wheel 4231, and two ends of the riding wheel shaft 4233 are connected to the wheel support 4234 through bearings. The retaining shoulder 4232 contacts the end ring 413 at the rear end of the drum 41 and limits the axial displacement of the drum 41.
The distance H between the stainless steel bars 412 has different values in four sections of the roller, wherein H = 35-40 mm in a first roller section 415, H = 25-30 mm in a second roller section 416, H = 15-20 mm in a third roller section 417 and H = 10-15 mm in a fourth roller section 418.
The conveyer belt is the combination of four conveyer belts, is equipped with one district conveyer belt 34, two district conveyer belts 35, three district's conveyer belt 36 and four district's conveyer belts 37 respectively in proper order along the length direction of air classification room 3 from the front end, four conveyer belts are all to be covered with the food level conveyer belt that the aperture is 8 mm's round hole.
The louver is a combination of four louvers, and a first-zone louver 341, a second-zone louver 351, a third-zone louver 361 and a fourth-zone louver 371 are sequentially arranged from the front end along the length direction of the air separation chamber 3. Four louver motors 38 are respectively arranged at the upper end edge of the left side plate, and the four louver motors 38 are variable frequency motors.
The motors of the blower 31 and the suction fan 32 are frequency conversion motors.
The air blower 31 is provided with an air outlet which inclines upwards, and the inclined included angle between the air outlet and the horizontal line is 35-55 degrees.
The suction fan 32 is provided with an air inlet which inclines upwards, and the inclined included angle between the air inlet and the horizontal line is 35-55 degrees. And a protective net 39 is arranged at the air inlet.
The beneficial technical effects of the invention are as follows:
(1) The method combines winnowing and drum screening, and uses the different floating characteristics of single buds, one bud and one leaf, one bud and two leaves, one bud and three and four leaves and single leaves in the air flow to sort and sort finely.
(2) Adopt inverter motor, realize intelligent regulation.
(3) Simple structure, easy operation and suitable popularization and application.
Drawings
FIG. 1 is a front view of the present invention
FIG. 2 isbase:Sub>A cross-sectional view of A-A of the present invention
Fig. 3 is a top view of the present invention.
Fig. 4 is a top view of the drum of the present invention.
Fig. 5 is a side view of the drum of the present invention.
FIG. 6 is a schematic view of the structure of the roller mechanism of the present invention.
FIG. 7 is a schematic view of the structure of the front riding wheel and the speed reducing motor of the present invention.
FIG. 8 is a schematic view of the structure of the rear idler of the present invention.
FIG. 9 is a developed view of the inner wall of the spiral vane plate welding drum.
Number in the figure:
the device comprises a lifting machine 1, a vibration feeding machine 2, an air separation chamber 3, an air blower 31, a suction fan 32, a vibration discharging machine 33, a first-zone conveying belt 34, a second-zone conveying belt 35, a third-zone conveying belt 36, a fourth-zone conveying belt 37, a shutter motor 38, a protective net 39, a first-zone shutter 341, a second-zone shutter 351, a third-zone shutter 361 and a fourth-zone shutter 371.
The roller mechanism 4, a roller 41, a spiral guide vane plate 411, a stainless steel bar 412, an end circular ring 413, a middle circular ring 414, a roller first area 415, a roller second area 416, a roller third area 417, a roller fourth area 418, a supporting mechanism 42, a front riding wheel 421, a speed reducing motor 422, a rear riding wheel 423, a circular riding wheel 4231, a backstop shoulder 4232, a riding wheel shaft 4233 and a wheel support 4234.
Detailed Description
The invention will be further described by way of example with reference to the accompanying drawings.
Examples
Referring to fig. 1 to 9, a drum type fresh leaf winnowing machine for tea making comprises a lifter 1, a vibration conveyor 2, a winnowing chamber 3 and a drum mechanism 4. The winnowing room 3 is cuboid box structure, and length direction is around, and is the width direction about, is equipped with preceding curb plate, posterior lateral plate, left side board, right side board, and the top is equipped with the shutter, and the bottom is equipped with the conveyer belt. The roller mechanism 4 is arranged inside the air separation chamber 3, the roller mechanism 4 is provided with a roller 41 driven by a speed reduction motor to rotate, the roller 41 is in a cylindrical shape welded by stainless steel bars, and gaps among the stainless steel bars form sieve pores of the roller. The upper portion of preceding curb plate is equipped with bright leaf entry, the export of bright leaf entry linkage vibration feeding machine 2, the exit linkage lifting machine 1 of the access connection of vibration feeding machine 2, preceding curb plate downside is equipped with air-blower 31, the upside of posterior lateral plate is equipped with suction fan 32, and the downside is equipped with vibration ejection of compact machine 33.
The roller mechanism 4 comprises a roller 41 and a supporting mechanism 42, an end ring 413 is respectively arranged at the front and the back of the roller 41, three middle rings 414 are arranged in the middle of the roller 41, the roller 41 is divided into four sections, the end rings 413 are steel plates with the thickness of 20mm and the width of 100mm, the steel plates are rolled, the outer diameter of the steel plates is 3500mm, and the inner diameter of the steel plates is 3460mm; the middle ring 414 is rolled by a steel plate with a thickness of 20mm and a width of 50mm, and has an outer diameter of 3500mm and an inner diameter of 3460mm. Between these five rings are placed stainless steel rods 412 with a spacing H, said stainless steel rods 412 being parallel to the drum axis, the diameter of the stainless steel rods 412 being 10mm. Four spiral guide vane plates 411 with the same length as the roller are uniformly distributed on the inner wall of the roller 41, the spiral guide vane plates 411 are stainless steel plates with the width of 300mm and the thickness of 1.5mm, the spiral line of the spiral guide vane plates is right-handed, and the spiral lead angle is 15-20 degrees. The four sections are sequentially arranged as a roller first zone 415, a roller second zone 416, a roller third zone 417 and a roller fourth zone 418 from the front end, and the length sizes of the four sections are 2000mm, 1500mm and 1000mm respectively. The spacing H between the stainless steel bars 412 has different values in four sections of the drum, H =38mm in the first section 415 of the drum, H =28mm in the second section 416 of the drum, H =18mm in the third section 417 of the drum, and H =12mm in the fourth section 418 of the drum.
The supporting mechanism 42 is configured such that four corners of a rectangular flat plate are respectively provided with a supporting roller, the supporting roller includes two front supporting rollers 421 at the front end and two rear supporting rollers 423 at the rear end, and one of the two front supporting rollers 421 is connected to a speed reduction motor 422. The drum 41 is mounted on a support mechanism 42. The rated power of the speed reducing motor 422 is 3Kw alternating current variable frequency speed reducing motor, and the output rotating speed is 5-20 rpm.
The roller 41 is arranged in an inclined manner with a high front part and a low back part, and the included angle between the axis of the roller 41 and the horizontal line is 15 degrees.
The rear riding wheel 423 comprises a circular riding wheel 4231, a stopping shoulder 4232, a riding wheel shaft 4233 and a wheel support 4234, wherein the stopping shoulder 4232 is arranged on one side edge of the circular riding wheel 4231, the riding wheel shaft 4233 is arranged in the center of the circular riding wheel 4231, and two ends of the riding wheel shaft 4233 are connected to the wheel support 4234 through bearings. The retaining shoulder 4232 contacts the end ring 413 at the rear end of the drum 41 and limits the axial displacement of the drum 41.
The conveyer belt is the combination of four conveyer belts, is equipped with one district conveyer belt 34, two district conveyer belts 35, three district's conveyer belt 36 and four district's conveyer belts 37 respectively in proper order along the length direction of air classification room 3 from the front end, four conveyer belts are all to be covered with the food level conveyer belt that the aperture is 8 mm's round hole.
The louver is a combination of four louvers, and a first-zone louver 341, a second-zone louver 351, a third-zone louver 361 and a fourth-zone louver 371 are sequentially arranged from the front end along the length direction of the air separation chamber 3. Four louver motors 38 are respectively arranged at the upper end edge of the left side plate, and the four louver motors 38 are 0.5Kw variable frequency motors.
The rated power of the motor used by the blower 31 is 1.5Kw alternating current variable frequency motor, the rated wind pressure is 800-2500 pa, and the rated wind volume is 800-4800M 3 And H is (c). The air blower 31 is provided with an air outlet which is inclined upwards, and the inclined included angle between the air outlet and the horizontal line is 45 degrees.
The rated power of the motor used by the suction fan 32 is 0.55Kw alternating current variable frequency motor, the rated wind pressure is 500-2000 pa, and the rated wind pressure isThe air quantity is 600-1200M 3 And H is (c). The suction fan 32 is provided with an air inlet which inclines upwards, the inclined included angle between the air inlet and the horizontal line is 45 degrees, and a protective net 39 is arranged at the air inlet.
When the pneumatic classifying device is used, fresh leaves enter a roller 41 of an air separation chamber 3 through a lifting machine 1 and a vibration conveyor 2, the fresh leaves are blown to the rear upper part of the roller 41 by an air blower 31 and fall in a parabolic shape, the intensity and the direction of air are adjusted by a suction fan 32 and a shutter at the top of the air separation chamber, after the fresh leaves are subjected to air separation, the fresh leaves with different grades fall into a lower conveying belt from different areas of the rotating roller 41, three leaves and four leaves in a bud fall into a front first area conveying belt 34, two leaves in a bud fall into a second area conveying belt 35, one leaf in a bud falls into a third area conveying belt 36, most buds and a small number of single leaves are blown to the rear and fall into a fourth area conveying belt 37, most single leaves and a small number of bud leaves are sent out from a vibration discharging machine 33, and classification air separation of the fresh leaves is realized.
The above description is not intended to limit the present invention in any way as to its structure and shape. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a drum-type fresh leaf air separator for making tea which characterized in that: the winnowing machine comprises a lifter (1), a vibration material conveyer (2), a winnowing chamber (3) and a roller mechanism (4); the winnowing chamber (3) is of a cuboid box-shaped structure, the front and the back are in the length direction, the left and the right are in the width direction, a front side plate, a back side plate, a left side plate and a right side plate are arranged, a louver is arranged at the top, and a conveying belt is arranged at the bottom; the roller mechanism (4) is arranged inside the air separation chamber (3), the roller mechanism (4) is provided with a roller (41) driven by a speed reduction motor to rotate, the roller (41) is in a cylindrical shape welded by stainless steel bars, and gaps among the stainless steel bars form sieve holes of the roller; the upper part of the front side plate is provided with a fresh leaf inlet, the fresh leaf inlet is connected with an outlet of a vibration conveyor (2), an inlet of the vibration conveyor (2) is connected with an outlet of a hoisting machine (1), the lower side of the front side plate is provided with an air blower (31), the upper side of the rear side plate is provided with a suction fan (32), and the lower side of the rear side plate is provided with a vibration discharging machine (33);
the drum mechanism (4) comprises a drum (41) and a supporting mechanism (42), wherein the front and the back of the drum (41) are respectively provided with an end circular ring (413), the middle of the drum is provided with three middle circular rings (414), the drum (41) is divided into four intervals, stainless steel rods (412) with the intervals of H are arranged among the five circular rings, the stainless steel rods (412) are parallel to the axis of the drum, four spiral guide vane plates (411) with the same length as the drum are uniformly distributed on the inner wall of the drum (41), the spiral line of each spiral guide vane plate (411) is right-handed, and the spiral lead angle is 15-20 degrees; the four sections are sequentially arranged into a roller first zone (415), a roller second zone (416), a roller third zone (417) and a roller fourth zone (418) from the front end; the supporting mechanism (42) is structurally characterized in that supporting rollers are respectively arranged at four corners of a rectangular flat plate, each supporting roller comprises two front supporting rollers (421) at the front end and two rear supporting rollers (423) at the rear end, and one of the two front supporting rollers (421) is connected with a speed reducing motor (422); the roller (41) is erected on a supporting mechanism (42);
the rear supporting wheel (423) comprises a circular supporting wheel (4231), a stopping shoulder (4232), a supporting wheel shaft (4233) and a wheel support (4234), the stopping shoulder (4232) is arranged on the edge of one side of the circular supporting wheel (4231), the supporting wheel shaft (4233) is arranged in the center of the circular supporting wheel (4231), and two ends of the supporting wheel shaft (4233) are connected to the wheel support (4234) through bearings; the retaining shoulder (4232) is in contact with an end circular ring (413) at the rear end of the roller (41) and limits the axial displacement of the roller (41);
the conveying belt is a combination of four conveying belts, a first-zone conveying belt (34), a second-zone conveying belt (35), a third-zone conveying belt (36) and a fourth-zone conveying belt (37) are sequentially and respectively arranged from the front end along the length direction of the air separation chamber (3), and the four conveying belts are all food-grade conveying belts which are fully distributed with round holes with the aperture of 8 mm;
the louver is a combination of four louvers, and a first-zone louver (341), a second-zone louver (351), a third-zone louver (361) and a fourth-zone louver (371) are sequentially arranged from the front end along the length direction of the air separation chamber (3); the upper end edge of the left side plate is respectively provided with four shutter motors (38), and the four shutter motors (38) are variable frequency motors;
when the pneumatic fresh leaf sorting machine is used, fresh leaves enter a roller (41) of a winnowing chamber (3) through a lifting machine (1) and a vibration conveyor (2), the fresh leaves are blown to the rear upper part of the roller (41) by an air blower (31) and fall in a parabolic shape, a suction fan (32) and a shutter at the top of the winnowing chamber adjust the intensity and direction of wind, after the fresh leaves are winnowed, the fresh leaves of different grades fall into a conveying belt below from different areas of the rotating roller (41), and partial single leaves in the fresh leaves are sent out from a vibration discharging machine (33), so that the grading winnowing of the fresh leaves is realized.
2. The drum-type fresh leaf winnowing machine for tea making according to claim 1, characterized in that: the roller (41) is arranged in an inclined shape with a high front part and a low back part, and the included angle between the axis of the roller (41) and the horizontal line is 10-15 degrees.
3. The drum-type fresh leaf winnowing machine for tea making according to claim 1, characterized in that: the distance H between the stainless steel rods (412) is set to be different in four sections of the roller, H = 35-40 mm in a first roller area (415), H = 25-30 mm in a second roller area (416), H = 15-20 mm in a third roller area (417) and H = 10-15 mm in a fourth roller area (418).
4. The drum-type fresh leaf winnowing machine for tea making according to claim 1, characterized in that: the motors of the air blower (31) and the suction fan (32) are both variable frequency motors, the suction fan (32) is provided with an air inlet which inclines upwards, and the inclined included angle between the air inlet and the horizontal line is 35-55 degrees.
5. The drum-type fresh leaf winnowing machine for tea making according to claim 1, characterized in that: the air blower (31) is provided with an air outlet which inclines upwards, and the inclined included angle between the air outlet and the horizontal line is 35-55 degrees.
6. The drum-type fresh leaf winnowing machine for tea making according to claim 1, characterized in that: and a protective net (39) is arranged at the air inlet of the suction fan (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710249187.2A CN106938248B (en) | 2017-04-17 | 2017-04-17 | A bright leaf air separator of drum-type for making tea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710249187.2A CN106938248B (en) | 2017-04-17 | 2017-04-17 | A bright leaf air separator of drum-type for making tea |
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| Publication Number | Publication Date |
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| CN106938248A CN106938248A (en) | 2017-07-11 |
| CN106938248B true CN106938248B (en) | 2023-04-07 |
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| CN201710249187.2A Active CN106938248B (en) | 2017-04-17 | 2017-04-17 | A bright leaf air separator of drum-type for making tea |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107350156A (en) * | 2017-07-24 | 2017-11-17 | 贵州省凤冈县田坝魅力黔茶有限公司 | A kind of tealeaves cold wind screening machine |
| CN109759340A (en) * | 2017-11-09 | 2019-05-17 | 合肥美亚光电技术股份有限公司 | Fresh tea leaves sorting unit and method |
| CN113000376A (en) * | 2021-01-31 | 2021-06-22 | 上海萩狩农业科技发展有限公司 | Equipment capable of realizing repeated circulating treatment of grains |
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| CN86102345A (en) * | 1986-04-02 | 1987-04-22 | 高信光 | Impeller type winnower with dedusting effect |
| WO2002064256A1 (en) * | 2001-02-16 | 2002-08-22 | Seirei Industry Co., Ltd. | Closed air force type grain sorting mechanism |
| JP2006296248A (en) * | 2005-04-18 | 2006-11-02 | Iseki & Co Ltd | Threshing and sorting device |
| CN102341191A (en) * | 2009-03-03 | 2012-02-01 | 株式会社理光 | Classifying apparatus, classifying method, and method for producing toner |
| CN202438461U (en) * | 2011-12-21 | 2012-09-19 | 内蒙古工业大学 | Split-joint adjustable horizontal airflow separator |
| CN205684339U (en) * | 2016-01-31 | 2016-11-16 | 福建粮工机械有限公司 | A kind of Winnowing box portion dress |
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