CN106111538B - Grain combines receiving sieve - Google Patents

Grain combines receiving sieve Download PDF

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Publication number
CN106111538B
CN106111538B CN201610700382.8A CN201610700382A CN106111538B CN 106111538 B CN106111538 B CN 106111538B CN 201610700382 A CN201610700382 A CN 201610700382A CN 106111538 B CN106111538 B CN 106111538B
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Prior art keywords
grain
sieve
miscellaneous
cleaning
small
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CN201610700382.8A
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CN106111538A (en
Inventor
肖启发
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HUNAN XIANGLIANG MACHINERY MANUFACTURE Co Ltd
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HUNAN XIANGLIANG MACHINERY MANUFACTURE Co Ltd
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Publication of CN106111538A publication Critical patent/CN106111538A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B9/00Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50Cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B11/00Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/02Arrangement of air or material conditioning accessories
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B7/00Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/01Selective separation of solid materials carried by, or dispersed in, gas currents using gravity

Abstract

The invention discloses a kind of grains to combine receiving sieve, including raw grain entrance, granule foreign screening cleaning mechanism, light impurities selection by winnowing cleaning mechanism and the outlet of net grain laid successively, it is equipped between granule foreign screening cleaning mechanism and light impurities selection by winnowing cleaning mechanism for enabling the substance of different densities detach by way of suddenly change air-flow velocity and/or airflow direction to eliminate the light miscellaneous and dust in grain and make the gravity trash chamber of light miscellaneous and dust gravitational settling and discharge.So that the impurity for being delivered to light impurities selection by winnowing cleaning mechanism greatly reduces, the abrasion of light impurities selection by winnowing cleaning mechanism inner blower is caused to avoid excessive light impurities from entering directly into light impurities selection by winnowing cleaning mechanism;Grain yield miscellaneous clearly and impurity-eliminating effect can be improved, while so that the probability containing grain substantially reduces in impurity.

Description

Grain combines receiving sieve
Technical field
The present invention relates to grain processing equipment technical fields, particularly, are related to a kind of grain combination receiving sieve.
Background technology
Paddy can usually be mixed into various impurity, raw grain into factory when processing durings harvest, drying, transport, storage etc. It should be arranged first, impurity is cleaned to and meets the requirement that meter factory processes into machine raw grain, the arrangement process of this raw grain Referred to as --- it is clear at the beginning of raw grain.National density criterion:Purchase storage paddy impurity content is no more than 1%, so must effectively remove Go to part in raw grain small miscellaneous, light miscellaneous and all big miscellaneous.
At present grain mass precleaner mainly by cylindrical pre-cleaning screen, vibration receiving sieve, combination receiving sieve (combination form has two kinds: Drum sieve+vibrating screen;Vibrating screen+vibrating screen+selection by winnowing).Existing grain mass precleaner has the following problems:During removing light impurities, Impurity often first passes through wind turbine and arrives cyclone again, and a large amount of light impurities can cause wind turbine serious wear;The processing capacity of grain Low, screen rice yield is not more than 50T/H, and wheat is not more than 80T/H;Impurity-eliminating effect is poor, best dust removal rate 80~ Between 90%;Easily occurs the case where containing grain in impurity.
Invention content
The present invention provides a kind of grains to combine receiving sieve, miscellaneous during removing light impurities to solve existing grain mass precleaner Matter often first passes through wind turbine and arrives cyclone again, and a large amount of light impurities can cause wind turbine serious wear;The processing capacity of grain is low; Impurity-eliminating effect is poor;Easily occurs the technical issues of the case where containing grain in impurity.
The present invention provides a kind of grain combination receiving sieve, including raw grain entrance, the granule foreign laid successively sieve cleaning Mechanism, light impurities selection by winnowing cleaning mechanism and the outlet of net grain, granule foreign sieve cleaning mechanism and are cleared up with light impurities selection by winnowing Between mechanism be equipped with for made by way of suddenly change air-flow velocity and/or airflow direction different densities substance detach with It eliminates the light miscellaneous and dust in grain and enables light miscellaneous and dust gravitational settling and discharge gravity trash chamber.
Further, granule foreign screening cleaning mechanism includes the multi-stage screening mechanism of the descending distribution of sieve pore.
Further, granule foreign screening cleaning mechanism include big miscellaneous food passageway, it is big on big miscellaneous food passageway Miscellaneous sieve, middle small coarse cereals food channel and the medium and small miscellaneous sieve on middle small coarse cereals food channel, big miscellaneous food passageway and middle small coarse cereals It is laid successively from raw grain entrance to net grain export direction in food channel;Big miscellaneous food passageway is equipped with for providing sieve for big miscellaneous sieve The big miscellaneous sieve vibrating motor of power is vibrated, big miscellaneous food passageway is connected with the big miscellaneous outlet for exporting large granular impurity;It is medium and small miscellaneous Food passageway is equipped with for providing the medium and small miscellaneous sieve vibrating motor that sieve vibrates power for medium and small miscellaneous sieve, and middle small coarse cereals eat channel It is connected with the medium and small miscellaneous outlet for exporting small particles impurity.
Further, it is connected on big miscellaneous sieve and/or medium and small miscellaneous sieve for clearing up screen surface impurity to prevent impurity from blocking The sieve cover cleaning mechanism of sieve mesh.
Further, gravity trash chamber is connected to the output end that granule foreign sieves cleaning mechanism by air hose, and gravity removes Miscellaneous room is equipped with the light miscellaneous impurity discharging port for light impurities to be discharged.
Further, big miscellaneous outlet and medium and small miscellaneous outlet are common pressure chamber;The inner cavity of air hose is negative pressure cavity;Middle small coarse cereals food The wind pressure diaphragm that channel is eaten for small coarse cereals in preventing air-flow from inversely entering is equipped between channel and air hose.
Further, light impurities selection by winnowing cleaning mechanism includes being connected in the dedusting fan of gravity trash chamber output end and setting In the cyclone of dedusting fan output end.
Further, big miscellaneous sieve compass screen surface width is 1m-2.5m, screen length 1m-2.5m;Medium and small miscellaneous sieve compass screen surface width is 1m-2.5m screen length 1.5m-2.5m;The beam overall that grain combines receiving sieve is within 2.3m, and total height is within 4m.
Further, big miscellaneous sieve compass screen surface width is 1.5m, screen length 1.5m;Medium and small miscellaneous sieve compass screen surface width is 1.6m, Screen length is 2.5m.
Further, granule foreign screening cleaning mechanism bottom is equipped with for caching vibration force and cutting down subtracting for vibrating noise Shake spring.
Further, grain combines receiving sieve bottom and is equipped with for grain combination receiving sieve overall movement or fixes support Chassis;Upper dress height above chassis is within 2.98m.
The invention has the advantages that:
Grain of the present invention combines receiving sieve, by sieving cleaning mechanism and light impurities selection by winnowing cleaning mechanism in granule foreign Between gravity trash chamber is set, cleaning mechanism is sieved to light impurities selection by winnowing by granule foreign by gravity trash chamber suddenly change The air flow rate and/or airflow direction of cleaning mechanism, with force the grain of different densities in air-flow, granule foreign, light impurities, Dust separation, the relatively large grain of density fall by channel and enter net grain outlet output after rise, granule foreign, light impurities, Dust separation falls on down different delivery outlet outputs respectively, so that being delivered to the impurity of light impurities selection by winnowing cleaning mechanism significantly It reduces, light impurities selection by winnowing is caused to avoid excessive light impurities from entering directly into light impurities selection by winnowing cleaning mechanism The abrasion of cleaning mechanism inner blower;Grain yield miscellaneous clearly and impurity-eliminating effect can be improved, while being made in impurity containing the several of grain Rate substantially reduces.
Other than objects, features and advantages described above, the present invention also has other objects, features and advantages. Below with reference to figure, the present invention is described in further detail.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the grain combination receiving sieve of the preferred embodiment of the present invention.
Marginal data:
1, raw grain entrance;2, granule foreign sieves cleaning mechanism;201, big miscellaneous food passageway;202, big miscellaneous sieve;203, in Small coarse cereals eat channel;204, medium and small miscellaneous sieve;205, big miscellaneous sieve vibrating motor;206, medium and small miscellaneous sieve vibrating motor;207, it is big it is miscellaneous go out Mouthful;208, medium and small miscellaneous outlet;3, light impurities selection by winnowing cleaning mechanism;4, net grain outlet;5, gravity trash chamber;501, drainage wind Machine;6, sieve cover cleaning mechanism;7, wind pressure diaphragm;8, chassis;9, air hose;10, shock-absorbing spring;11, winnowing machine.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and The multitude of different ways of covering is implemented.
Fig. 1 is the structural schematic diagram of the grain combination receiving sieve of the preferred embodiment of the present invention.As shown in Figure 1, the present embodiment Grain combine receiving sieve, including the raw grain entrance 1 laid successively, granule foreign screening cleaning mechanism 2, light impurities selection by winnowing are clear Mechanism 3 and net grain outlet 4 are managed, is equipped with and is used between granule foreign screening cleaning mechanism 2 and light impurities selection by winnowing cleaning mechanism 3 Detach the substance of different densities by way of suddenly change air-flow velocity and/or airflow direction light miscellaneous in grain to eliminate With dust and enable light miscellaneous and dust gravitational settling and discharge gravity trash chamber 5.Optionally, gravity trash chamber 5 is connected with use In the gravity wind turbine 501 of air-flow velocity and/or airflow direction in suddenly change gravity trash chamber 5.Optionally, net grain outlet 4 It is equipped with the winnowing machine 11 that the grain filtered out from gravity trash chamber is cleaned and received for the net grain to output.The present invention Grain combines receiving sieve, and gravity is arranged between cleaning mechanism 2 and light impurities selection by winnowing cleaning mechanism 3 by being sieved in granule foreign Trash chamber 5 sieves cleaning mechanism 2 to light impurities selection by winnowing cleaning mechanism 3 by 5 suddenly change of gravity trash chamber by granule foreign Air flow rate and/or airflow direction, to force the grain of different densities in air-flow, granule foreign, light impurities, dust point From the relatively large grain of density is fallen after rise by channel and enters net 4 output of grain outlet, granule foreign, light impurities, dust point It is exported from different delivery outlets are fallen on down respectively, so that the impurity for being delivered to light impurities selection by winnowing cleaning mechanism 3 greatly reduces, Light impurities selection by winnowing is caused to clear up to avoid excessive light impurities from entering directly into light impurities selection by winnowing cleaning mechanism 3 The abrasion of 3 inner blower of mechanism;Grain yield miscellaneous clearly and impurity-eliminating effect can be improved, while so that the probability containing grain is big in impurity It is big to reduce.
As shown in Figure 1, in the present embodiment, granule foreign screening cleaning mechanism 2 includes the multistage of the descending distribution of sieve pore Screening mechanism.The multiple screening impurity elimination to raw grain is formed, to fully exclude the granule foreign in grain, while can also be avoided Grain is misprinted the probability removed, improves the yield that raw grain arranges.
As shown in Figure 1, in the present embodiment, it includes big miscellaneous food passageway 201, in big that granule foreign, which sieves cleaning mechanism 2, Big miscellaneous sieve 202, middle small coarse cereals on miscellaneous food passageway 201 are eaten channel 203 and are eaten in middle small coarse cereals medium and small on channel 203 Miscellaneous sieve 204.Big miscellaneous food passageway 201 and middle small coarse cereals are eaten channel 203 and are laid successively from raw grain entrance 1 to 4 directions of net grain outlet. Big miscellaneous food passageway 201 is equipped with for providing the big miscellaneous sieve vibrating motor 205 that sieve vibrates power for big miscellaneous sieve 202.It is big miscellaneous Food passageway 201 is connected with the big miscellaneous outlet 207 for exporting large granular impurity.Middle small coarse cereals food channel 203 be equipped with for for Medium and small miscellaneous sieve 204 provides the medium and small miscellaneous sieve vibrating motor 206 of sieve vibration power.Middle small coarse cereals food channel 203 is connected with for defeated Go out the medium and small miscellaneous outlet 208 of small particles impurity.Wherein, big miscellaneous sieve 202 belongs to the portion of one group of relative concept with medium and small miscellaneous sieve 204 Part, it is intended to illustrate that the mesh size of big miscellaneous sieve 202 is more than the mesh size of medium and small miscellaneous sieve 204, to form mesh aperture by big To the multi-stage screening mechanism of small formation.Preferably, the exclusion for carrying out granule foreign in raw grain is sieved using two-stage, can improve original The arrangement speed of grain improves net grain yield.Raw grain is entered by raw grain entrance 1, by big miscellaneous sieve 202 in big miscellaneous sieve vibrating motor The raw grain on 202 surfaces of big miscellaneous sieve is sieved under 205 driving effect, large granular impurity is excluded by big miscellaneous outlet 207, former Grain drops into big miscellaneous food passageway 201 and leads to medium and small miscellaneous sieve 204.Medium and small miscellaneous sieve 204 is in medium and small miscellaneous sieve vibrating motor 206 The raw grain on 204 surfaces of medium and small miscellaneous sieve is sieved under driving effect, small particles impurity is excluded by medium and small miscellaneous outlet 208, Raw grain drops into middle small coarse cereals food channel 203 and leads to air hose 9.Net grain is cleaned by winnowing machine 11 and exports 4 by net grain It exporting and collects, light impurities sequentially enter gravity trash chamber 5, dedusting fan and cyclone by air hose 9 and carry out processing impurities removal, To complete to reduce pollution of the light impurities to environment while net grain is collected.Optionally, air hose 9 is vertically arranged, Huo Zheqing Tiltedly arrangement.
As shown in Figure 1, in the present embodiment, it is connected on big miscellaneous sieve 202 and/or medium and small miscellaneous sieve 204 for clearing up screen surface Impurity is to prevent impurity from blocking the sieve cover cleaning mechanism 6 of sieve mesh.Big miscellaneous sieve can be cleared up in time by sieve cover cleaning mechanism 6 202 and/or the accumulation of 204 surfaces of medium and small miscellaneous sieve impurity, prevent mesh from blocking, reduce artificial climbing and safeguard the risk brought, subtract Few cleaning and maintenance probability improves the efficiency that raw grain arranges, improves net grain yield.
As shown in Figure 1, in the present embodiment, gravity trash chamber 5 is connected to granule foreign by air hose 9 and sieves cleaning mechanism 2 Output end.Most of light impurities are excluded by gravity trash chamber 5, while the grain in light impurities being enable to pass through wind Pipe 9 returns to net grain outlet 4 and is collected, and reduces the grain content of light impurities.Reduction is discharged into light impurities selection by winnowing cleaning mechanism 3 Light impurities, reduce the load of wind turbine and abrasion in light impurities selection by winnowing cleaning mechanism 3, the longevity used to improve equipment Order and reduce energy consumption.Gravity trash chamber 5 is equipped with the light miscellaneous impurity discharging port for light impurities to be discharged.So that light impurities are a large amount of Assembled and excluded, prevents light impurities from forming floating dust environmental pollution.Optionally, the light miscellaneous impurity discharging port of gravity trash chamber 5 can To merge with medium and small miscellaneous outlet 208, while small particles impurity and light impurities are discharged, to reduce structure configuration, reduced whole The occupied space of a structure.
As shown in Figure 1, in the present embodiment, big miscellaneous outlet 207 and medium and small miscellaneous outlet 208 are common pressure chamber.The inner cavity of air hose 9 For negative pressure cavity.It is equipped between middle small coarse cereals food channel 203 and air hose 9 and eats channel for small coarse cereals in preventing air-flow from inversely entering 203 wind pressure diaphragm 7.It is miscellaneous to the particle of granule foreign screening cleaning mechanism 2 that the negative pressure in air hose 9 is reduced by wind pressure diaphragm 7 Matter exclude influence, ensure granule foreign screening cleaning mechanism 2 can normal impurities removal, prevent impurity from inversely moving.
As shown in Figure 1, in the present embodiment, light impurities selection by winnowing cleaning mechanism 3 includes being connected in 5 output end of gravity trash chamber Dedusting fan and cyclone set on dedusting fan output end.It improves the processing capacity of light impurities and excludes probability, prevent Only light impurities constitute airborne dust and constitute the pollution to environment.
As shown in Figure 1, in the present embodiment, 202 compass screen surface width of big miscellaneous sieve are 1m-2.5m, screen length 1m-2.5m.In 204 compass screen surface width of small miscellaneous sieve are 1m-2.5m, screen length 1.5m-2.5m.Grain combine receiving sieve beam overall be 2.3m with Interior, total height is within 4m.So that each structure forms rational design size, while efficient process raw grain, improve whole The mobility of structure facilitates the movement and use of integral device.
As shown in Figure 1, in the present embodiment, 202 compass screen surface width of big miscellaneous sieve are 1.5m, screen length 1.5m.Medium and small miscellaneous sieve 204 compass screen surface width are 1.6m, screen length 2.5m.Using preferably size, while efficient process raw grain, improve whole The mobility of structure facilitates the movement and use of integral device, reduces manufacturing cost.
As shown in Figure 1, in the present embodiment, 2 bottom of granule foreign screening cleaning mechanism is equipped with for caching vibration force and disappearing Subtract the shock-absorbing spring 10 of vibrating noise.Reduce the vibration force in During Process of Screening of Vibration Screen, while can also reduce vibrating noise, optimizes Operating environment.
In the present embodiment, grain combines receiving sieve bottom and is equipped with for grain combination receiving sieve overall movement or fixed support Chassis 8.Upper dress height above chassis 8 is within 2.98m.Optionally, 8 bottom of chassis is provided with movable pulley, facilitates equipment Overall movement.Optionally, 8 bottom of chassis is equipped with telescopic fixing bracket, facilitates the whole positioning operation of equipment.Facilitate entirety The movement of structure and fixed use.
When implementation, a kind of grain combination receiving sieve is provided, belongs to the combination receiving sieve of " vibrating screen+vibrating screen+selection by winnowing " formula.Greatly 202 compass screen surface width of miscellaneous sieve are 1.5 meters, screen length is 1.5 meters.204 compass screen surface width of medium and small miscellaneous sieve are 1.6 meters, screen length is 2.5 rice.Whole equipment beam overall control is in 2.3 meters or less, total high control at 4.0 meters or less.Upper dress height control above chassis At 2.98 meters or less.Convenient for long-distance transport and quick assembling.Gravity trash chamber 5 is applied to the removing light impurities after screening and dust, Solve the problems, such as it is light it is miscellaneous in contain grain, best dust removal rate is between 90~99%, good operational environment while low noise.Except It is light it is miscellaneous during, impurity first pass around gravity trash chamber 5 remove it is most of it is light it is miscellaneous after again via wind turbine, substantially reduce impurity pair The abrasion of wind turbine has also increased dramatically the failure free time of equipment and the service life of wind turbine.By certain pattern handling, Medium and small miscellaneous screen frame is normal pressure, and middle or small impurity is easily drained outside sieve nest, thus it is unimpeded to maintain compass screen surface.Due to the height of this equipment The screening of effect and removing light impurities effect and logistics it is unimpeded, under standard raw grain state, screen rice yield can reach 50T/H, sieve Reason wheat yield can reach 100T/H.The result of the design concept of good screening and selection by winnowing:Grain is free of in impurity.Big miscellaneous sieve 202 are configured with sieve cover cleaning mechanism 6, and people station can easily operate on ground.
In the case where ensureing same yield, the Design of Vibratory Screen that width is 1.8 meters, length is 2 meters at width 1.6 Rice, 2.5 meters of length, compact-sized, screening effect is more preferably.Gravity trash chamber 5 is mounted on the top of medium and small miscellaneous sieve 204, and structure is tight It gathers, is easy to operate, the width of exchange is made to be suitble to long-distance transport, size not exceeded with height.Big miscellaneous sieve 202 is configured with sieve cover cleaning Mechanism 6, people station can easily operate on ground.
Gravity trash chamber 5 is applied to combination receiving sieve and mounted on (depression dust-removing) before dedusting fan.Medium and small The net grain discharge port of miscellaneous sieve 204 is provided with wind pressure diaphragm 7, and the negative pressure of vertical air plenums (air hose 9) is isolated with medium and small miscellaneous sieve screen frame It opens.
Grain of the present invention combines receiving sieve, and gravity trash chamber is applied to combination receiving sieve for the first time and is mounted on dedusting wind Before machine (depression dust-removing), selection by winnowing effect is good, free from dust raises good operational environment outside, wind turbine abrasion is small.In the net of medium and small miscellaneous sieve Grain discharge port is provided with wind pressure diaphragm, and the negative pressure of vertical air plenums is kept apart with medium and small miscellaneous sieve screen frame, to ensure it is big it is miscellaneous go out Mouth and the normal atmosphere (An) of small miscellaneous outlet had both ensured the not outer unimpeded impurities removal for raising, in turn ensuring impurity removal of impurity outlet dust.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of grain combines receiving sieve, including the raw grain entrance (1), granule foreign screening cleaning mechanism (2), light laid successively Matter impurity selection by winnowing cleaning mechanism (3) and net grain outlet (4),
It is characterized in that,
It is equipped between the granule foreign screening cleaning mechanism (2) and the light impurities selection by winnowing cleaning mechanism (3) for passing through It is light miscellaneous and grey in grain to eliminate that the mode of suddenly change air-flow velocity and/or airflow direction makes the substance of different densities detach Dirt simultaneously enables light miscellaneous and dust gravitational settling and discharge gravity trash chamber (5), by gravity trash chamber (5) suddenly change by Granule foreign sieves the air flow rate and/or airflow direction that cleaning mechanism (2) arrives light impurities selection by winnowing cleaning mechanism (3), to compel The grain of different densities, granule foreign, light impurities, dust separation in air-flow, the relatively large grain of density is set to pass through channel Falling and enter net grain outlet (4) output after rise, granule foreign, light impurities, dust separation fall on down different delivery outlet outputs respectively, So that the impurity for being delivered to light impurities selection by winnowing cleaning mechanism (3) greatly reduces, to avoid excessive light impurities straight Connect the abrasion for entering in light impurities selection by winnowing cleaning mechanism (3) and causing light impurities selection by winnowing cleaning mechanism (3) inner blower.
2. grain according to claim 1 combines receiving sieve, which is characterized in that
The granule foreign screening cleaning mechanism (2) includes the multi-stage screening mechanism of the descending distribution of sieve pore.
3. grain according to claim 1 combines receiving sieve, which is characterized in that
The granule foreign screening cleaning mechanism (2) includes big miscellaneous food passageway (201), in the big miscellaneous food passageway (201) big miscellaneous sieve (202), middle small coarse cereals on eat channel (203) and in the middle small coarse cereals are eaten on channel (203) Small miscellaneous sieve (204),
The big miscellaneous food passageway (201) and the middle small coarse cereals eat channel (203) from the raw grain entrance (1) to the net grain It lays successively in outlet (4) direction;
The big miscellaneous food passageway (201) is equipped with for providing the big miscellaneous sieve that sieve vibrates power for the big miscellaneous sieve (202) Vibrating motor (205),
The big miscellaneous food passageway (201) is connected with the big miscellaneous outlet (207) for exporting large granular impurity;
Middle small coarse cereals food channel (203), which is equipped with, to be vibrated for providing sieve for the medium and small miscellaneous sieve (204) in power Small miscellaneous sieve vibrating motor (206),
Middle small coarse cereals food channel (203) is connected with the medium and small miscellaneous outlet (208) for exporting small particles impurity.
4. grain according to claim 3 combines receiving sieve, which is characterized in that
It is connected on the big miscellaneous sieve (202) and/or the medium and small miscellaneous sieve (204) for clearing up screen surface impurity to prevent impurity Block the sieve cover cleaning mechanism (6) of sieve mesh.
5. grain according to claim 3 combines receiving sieve, which is characterized in that
The gravity trash chamber (5) is connected to the output end that the granule foreign sieves cleaning mechanism (2) by air hose (9),
The gravity trash chamber (5) is equipped with the light miscellaneous impurity discharging port for light impurities to be discharged.
6. grain according to claim 5 combines receiving sieve, which is characterized in that
The big miscellaneous outlet (207) and the medium and small miscellaneous outlet (208) are common pressure chamber;
The inner cavity of the air hose (9) is negative pressure cavity;
It is equipped between middle small coarse cereals food channel (203) and the air hose (9) described medium and small for preventing air-flow from inversely entering The wind pressure diaphragm (7) of miscellaneous food passageway (203).
7. grain according to any one of claim 1 to 6 combines receiving sieve, which is characterized in that
The light impurities selection by winnowing cleaning mechanism (3) include be connected in gravity trash chamber (5) output end dedusting fan and Set on the cyclone of the dedusting fan output end.
8. grain according to any one of claim 3 to 6 combines receiving sieve, which is characterized in that
Described big miscellaneous sieve (202) compass screen surface width is 1m-2.5m, screen length 1m-2.5m;
Described medium and small miscellaneous sieve (204) compass screen surface width is 1m-2.5m, screen length 1.5m-2.5m;
The beam overall of the grain combination receiving sieve is within 2.3m, and total height is within 4m.
9. grain according to any one of claim 1 to 6 combines receiving sieve, which is characterized in that
Granule foreign screening cleaning mechanism (2) bottom is equipped with the shock-absorbing spring for caching vibration force and cutting down vibrating noise (10)。
10. grain according to any one of claim 1 to 6 combines receiving sieve, which is characterized in that
Grain combination receiving sieve bottom is equipped with the chassis (8) for grain combination receiving sieve overall movement or fixed support;
The upper dress height of the chassis (8) above is within 2.98m.
CN201610700382.8A 2016-08-22 2016-08-22 Grain combines receiving sieve Active CN106111538B (en)

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