CN108184416A - A kind of air-sweeping type grain lifter and design method for vegetables with green leaves cropper - Google Patents
A kind of air-sweeping type grain lifter and design method for vegetables with green leaves cropper Download PDFInfo
- Publication number
- CN108184416A CN108184416A CN201810185372.4A CN201810185372A CN108184416A CN 108184416 A CN108184416 A CN 108184416A CN 201810185372 A CN201810185372 A CN 201810185372A CN 108184416 A CN108184416 A CN 108184416A
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- Prior art keywords
- venthole
- air
- pressure
- grain lifter
- flow
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D45/00—Harvesting of standing crops
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D65/00—Grain-crop lifters
Abstract
The present invention relates to a kind of air-sweeping type grain lifters for vegetables with green leaves cropper to adopt the following technical scheme that：Including grain lifter, air inlet, venthole, fixed link, valve, controller, air pump and airflow line.The grain lifter is used to help standing grain vegetables with green leaves；The air inlet is used to gas being filled in grain lifter its hollow cavity, so as to form certain pressure in cavity；The venthole is used to form columnar gas, makes leaf vegetables hanging；The fixed link is used to fix grain lifter；The valve is used to control the flow of air-flow；The controller is used for the pressure and flow that air pump is controlled to generate gas；The air pump is used to generate the gas of constant pressure；The airflow line is used for conduction gas.
Description
Technical field
The invention belongs to mechanization of agriculture fields, are related to a kind of air-sweeping type grain lifter for vegetables with green leaves cropper, complete
Standing grain operation is helped into vegetables with green leaves.
Technical background
Vegetables with green leaves are a kind of mainly Fast-growing vegetables using fresh and tender greenery, petiole and tender stem as product, since growth period is short,
Harvesting is flexible, and cultivation is very extensive, therefore there is an urgent need to develop vegetables with green leaves harvest machinery.
The harvest of vegetables with green leaves is carried out mainly by manual work at this stage, is collapsed dish leaf with hand, with knife from rhizome portion by leaf
Dish is cut off, and then collapses bundling, labor intensity is big, and working efficiency is low.
Through the literature search discovery to the prior art, " a kind of vegetables with green leaves are whole to involve continuous harvesting dress in a criminal case to Chinese invention new patent
Put and collecting method " number of patent application：201510924799.8 provide a kind of harvest machinery, but its there are the problem of be：Nothing
Method effectively carries out vegetables with green leaves to help standing grain, during harvest vegetables with green leaves in bulk situation it is more, and leaf vegetables damage ratio compared with
It is high.
Invention content
The present invention provides a kind of air-sweeping type for leaf vegetables cropper and standing grain is helped to fill for deficiency existing for vegetables with green leaves cropper
It puts, standing grain harvest operation is helped to be of great significance the vegetables with green leaves planted on a large scale, helped when preferably overcoming machine harvest
The problem of standing grain is bad and is damaged to vegetables with green leaves.
A kind of air-sweeping type grain lifter for leaf vegetables cropper of the invention adopts the following technical scheme that：Grain lifter, air inlet
Mouth, venthole, fixed link, valve, controller, air pump and airflow line.The grain lifter is used to help standing grain vegetables with green leaves；Described
Air inlet is used to gas being filled in grain lifter its hollow cavity, so as to form certain pressure in cavity；Described goes out
Stomata is used to form columnar gas, makes leaf vegetables hanging；The fixed link is used to fix grain lifter；The valve is used to control
The flow of air-flow processed；The controller is used for the pressure and flow that air pump is controlled to generate gas；The air pump is used to generate
The gas of constant pressure；The airflow line is used for conduction gas.
The grain lifter is made for PVC material, and for the hollow structure of taper sealing, surface is smooth and the camber line gradient is put down
Slow, surface is evenly distributed with several ventholes, and bottom surface is horizontal plane, and end face is fixed link and air admission hole thereafter；The grain lifter
For the main part of entire grain lifter, each one of the front end of position whole device, and left and right sides.
The venthole is distributed in grain lifter surface axis and both sides, is distributed by front end to the end of grain lifter,
Venthole on axis, opening direction be vertical direction, the venthole positioned at axis both sides, opening direction perpendicular to
Surface tangent direction；The venthole is communicated with grain lifter inner cavity.
The air inlet is located in the middle part of grain lifter rear end face, and diameter is identical with airflow line diameter, with airflow line
End it is in mating connection.
The fixed link is made for rigid plastics, and on the upside of grain lifter rear end face, one end is fixed with grain lifter, separately
The front end of cropper is fixed in one end.
The valve is installed in the middle part of airflow line, and rotating valve knob can adjust the flow of airflow line.
The controller is installed on air pump side, is fixed on leaf vegetables cropper, can adjust gas by controlling frequency
The pressure and flow of pump, and controller surface liquid crystal display shows the pressure and flow of air pump.
The air pump is mounted on leaf vegetables cropper, is controlled by the power supply of harvest electromechanical source by controller and is generated gas
Body；The air pump is connected by airflow line with grain lifter.
The airflow line is two parts, first, one end is connected with air pump, the other end is connected with the inlet end of valve；
Second, one end is connected with the air inlet of grain lifter rear end face, the other end is connected with the outlet side of valve；The airflow line is
Soft PVC material.
The design method that a kind of air-sweeping type grain lifter for leaf vegetables cropper of the invention uses for：According to leaf vegetables from
The area of weight, effective number of venthole and venthole can obtain the pressure of venthole air column, flow velocity and air pressure by venthole
The pressure in grain lifter cavity can be obtained with the relationship of flow velocity and the pressure of venthole air column, coordinates the damage of air in pipeline pressure
Lose the pressure to get air pump；According to the number of the venthole on the flow and grain lifter of venthole to get the flow of air pump.
The leaf vegetables floating should meet condition and be：
F≥G (1)
F=n ' * p*s (2)
Wherein：F is the power for acting on leaf vegetables lower surface；G is the dead weight of leaf vegetables；N ' is the number of effective venthole, wherein
Effective meaning can act on leaf vegetables surface for the air-flow that venthole generates；P is the pressure of venthole air column；S is venthole
Area.
The flow velocity and flow of the venthole be：
Wherein：vcFlow velocity for venthole；ζ is resistance coefficient；pqFor the pressure in cavity；P is the pressure of venthole air column
By force.
The venthole air column pressure and the relationship of flow velocity are：
Wherein：P is the pressure of venthole air column；vcFlow velocity for venthole.
Air pressure in the grain lifter cavity is obtained by formula (2) (3) (5)：
pq=[[800 (1+ ζ) ρ]+1] p (6)
The pressure loss of the airflow line is：
(v2=1600pq) (8)
Wherein：psThe pressure lost in the duct for air-flow；F is the gas stream coefficient of kinetic friction；L is the length of airflow line
Degree；D is pipeline diameter；ρ is the density of gas；V is the flow velocity of gas in pipelines；pqFor the pressure in cavity.
The air pump pressure and flow can be derived by above-mentioned formula：
Wherein：N is the number of venthole；CcFor constriction coefficient.
The beneficial effects of the invention are as follows：
1st, leaf vegetables has the auxiliary of air-flow during standing grain is helped, and greatly reduces frictional force, reduces and is damaged caused by helping standing grain
Wound.
2nd, this device is simply light, is applicable to a variety of leaf vegetables croppers and uses.
3rd, this device air pump is electronic, energy conservation and environmental protection, and is equipped with control device, easy to operate, simple easy to get started.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the front view structure schematic diagram of the present invention；
Fig. 3 is the left view structure diagram of the present invention；
In figure：1st, grain lifter 2, venthole 3, air inlet 4, fixed link 5, valve 6, controller 7, air pump 8, airflow line.
Specific embodiment,
Patent of the present invention is described further below in conjunction with the accompanying drawings.As shown in Figure 1, 2, 3, the grain lifter
Including grain lifter 1, air inlet 2, venthole 3, fixed link 4, valve 5, controller 6, air pump 7 and airflow line 8.Described helps standing grain
Device 1 is made for PVC material, and for the hollow structure of taper sealing, surface is smooth and camber line gentle gradient, is done if surface is uniformly distributed
Stomata, bottom surface are horizontal plane, and end face is fixed link and air admission hole thereafter；The grain lifter 1 is the master of entire grain lifter
Each one of body portion, the front end of position whole device, and left and right sides.
The venthole 2 is distributed in 1 surface axis of grain lifter and both sides, is had point by front end to the end of grain lifter 1
Cloth, the venthole on axis, opening direction are vertical direction, and the venthole positioned at axis both sides, opening direction hangs down
Directly in surface tangent direction；The venthole 2 is communicated with 1 inner cavity of grain lifter.
The air inlet 3 is located in the middle part of 1 rear end face of grain lifter, and diameter is identical with 8 diameter of airflow line, with gas flow tube
The end in road 8 is in mating connection.
The fixed link 4 is made for rigid plastics, and on the upside of 1 rear end face of grain lifter, one end is solid with grain lifter 1
Fixed, the other end is fixed on the front end of cropper.
The valve 5 is installed on 8 middle part of airflow line, and 5 knob of rotating valve can adjust the flow of airflow line 8.
The controller 6 is installed on 7 side of air pump, is fixed on leaf vegetables cropper, can be adjusted by controlling frequency
The pressure and flow of air pump 7, and 6 surface liquid crystal display of controller shows the pressure and flow of air pump 7.
The air pump 7 is mounted on leaf vegetables cropper, is powered by harvest electromechanical source and is controlled generation by controller 6
Gas；The air pump 7 is connected by airflow line 8 with grain lifter 1.
The airflow line 8 is two parts, first, one end is connected with air pump 7, the inlet end phase of the other end and valve 5
Even；Second, one end is connected with the air inlet 3 of 1 rear end face of grain lifter, the other end is connected with the outlet side of valve 5；The air-flow
Pipeline 8 is soft PVC material.
Claims (2)
1. a kind of air-sweeping type grain lifter for leaf vegetables cropper, it is characterised in that：Including grain lifter, air inlet, venthole,
Fixed link, valve, controller, air pump and airflow line；
The grain lifter is made for PVC material, and for the hollow structure of taper sealing, surface is smooth and camber line gentle gradient,
Surface is evenly distributed with several ventholes, and bottom surface is horizontal plane, and end face is fixed link and air admission hole thereafter；The grain lifter is entire
Each one of the main part of grain lifter, the front end of position whole device, and left and right sides；
The venthole is distributed in grain lifter surface axis and both sides, is distributed, is located at by front end to the end of grain lifter
Venthole on axis, opening direction are vertical direction, and the venthole positioned at axis both sides, opening direction is perpendicular to surface
Tangential direction；The venthole is communicated with grain lifter inner cavity；
The air inlet is located in the middle part of grain lifter rear end face, and diameter is identical with airflow line diameter, the end with airflow line
It holds in mating connection；
The fixed link is made for rigid plastics, and on the upside of grain lifter rear end face, one end is fixed with grain lifter, the other end
It is fixed on the front end of cropper；
The valve is installed in the middle part of airflow line, and rotating valve knob can adjust the flow of airflow line；
The controller is installed on air pump side, is fixed on leaf vegetables cropper, can adjust air pump by controlling frequency
Pressure and flow, and controller surface liquid crystal display shows the pressure and flow of air pump；
The air pump is mounted on leaf vegetables cropper, is controlled by the power supply of harvest electromechanical source by controller and is generated gas；
The air pump is connected by airflow line with grain lifter；
The airflow line is two parts, first, one end is connected with air pump, the other end is connected with the inlet end of valve；Second,
One end is connected with the air inlet of grain lifter rear end face, and the other end is connected with the outlet side of valve；The airflow line is softness
PVC material.
A kind of 2. air-sweeping type grain lifter for leaf vegetables cropper according to claim 1, which is characterized in that design method
For：The pressure of venthole air column is can obtain according to the area of the dead weight of leaf vegetables, effective number of venthole and venthole, by outlet
The pressure of the relationship and venthole air column of the flow velocity in hole and air pressure and flow velocity can obtain the pressure in grain lifter cavity, coordinate in pipeline
The loss of gas pressure to get air pump pressure；According to the number of the venthole on the flow and grain lifter of venthole to get gas
The flow of pump；
The leaf vegetables floating should meet condition and be：
F≥G (1)
F=n ' * p*s (2)
Wherein：F is the power for acting on leaf vegetables lower surface；G is the dead weight of leaf vegetables；N ' is the number of effective venthole, wherein effectively
Meaning for venthole generate air-flow can act on leaf vegetables surface；P is the pressure of venthole air column；S is the area of venthole；
The flow velocity and flow of the venthole be：
Wherein：vcFlow velocity for venthole；ζ is resistance coefficient；pqFor the pressure in cavity；P is the pressure of venthole air column；
The venthole air column pressure and the relationship of flow velocity are：
Wherein：P is the pressure of venthole air column；vcFlow velocity for venthole；
Air pressure in the grain lifter cavity is obtained by formula (2) (3) (5)：
pq=[[800 (1+ ζ) ρ]+1] p (6)
The pressure loss of the airflow line is：
(v2=1600pq) (8)
Wherein：psThe pressure lost in the duct for air-flow；F is the gas stream coefficient of kinetic friction；L is the length of airflow line；D is
Pipeline diameter；ρ is the density of gas；V is the flow velocity of gas in pipelines；pqFor the pressure in cavity；
The air pump pressure and flow can be derived by above-mentioned formula：
Wherein：N is the number of venthole；CcFor constriction coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810185372.4A CN108184416B (en) | 2018-03-07 | 2018-03-07 | Design method of air-blowing type seedling lifting device for green leaf vegetable harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810185372.4A CN108184416B (en) | 2018-03-07 | 2018-03-07 | Design method of air-blowing type seedling lifting device for green leaf vegetable harvester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108184416A true CN108184416A (en) | 2018-06-22 |
| CN108184416B CN108184416B (en) | 2023-08-25 |
Family
ID=62594689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810185372.4A Active CN108184416B (en) | 2018-03-07 | 2018-03-07 | Design method of air-blowing type seedling lifting device for green leaf vegetable harvester |
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| Country | Link |
|---|---|
| CN (1) | CN108184416B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114946395A (en) * | 2022-06-01 | 2022-08-30 | 华南农业大学 | Centering avoiding grabbing device and method for harvesting pipeline hydroponic leaf vegetables |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205567133U (en) * | 2016-02-29 | 2016-09-14 | 青州市精益液压机械有限公司 | Adjustable grain -supporting device of universal ball driven type |
| CN106856816A (en) * | 2017-04-01 | 2017-06-20 | 山东理工大学 | A kind of air-flowing type flexibility helps standing grain to break fringe device |
| CN107155508A (en) * | 2017-07-21 | 2017-09-15 | 河南科技大学 | A kind of united reaper air-sweeping type nearside divider device harvested suitable for coarse cereals |
| CN206547336U (en) * | 2017-03-09 | 2017-10-13 | 河北农业大学 | Corn harvester ear-picking roll |
| CN207948174U (en) * | 2018-03-07 | 2018-10-12 | 山东农业大学 | A kind of air-sweeping type grain lifter for vegetables with green leaves cropper |
-
2018
- 2018-03-07 CN CN201810185372.4A patent/CN108184416B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205567133U (en) * | 2016-02-29 | 2016-09-14 | 青州市精益液压机械有限公司 | Adjustable grain -supporting device of universal ball driven type |
| CN206547336U (en) * | 2017-03-09 | 2017-10-13 | 河北农业大学 | Corn harvester ear-picking roll |
| CN106856816A (en) * | 2017-04-01 | 2017-06-20 | 山东理工大学 | A kind of air-flowing type flexibility helps standing grain to break fringe device |
| CN107155508A (en) * | 2017-07-21 | 2017-09-15 | 河南科技大学 | A kind of united reaper air-sweeping type nearside divider device harvested suitable for coarse cereals |
| CN207948174U (en) * | 2018-03-07 | 2018-10-12 | 山东农业大学 | A kind of air-sweeping type grain lifter for vegetables with green leaves cropper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114946395A (en) * | 2022-06-01 | 2022-08-30 | 华南农业大学 | Centering avoiding grabbing device and method for harvesting pipeline hydroponic leaf vegetables |
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| Publication number | Publication date |
|---|---|
| CN108184416B (en) | 2023-08-25 |
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