It is centrifuged negative pressure grain screening agricultural apparatus and method
Technical field
The invention belongs to agricultural machinery correlative technology fields.
Background technique
Agricultural machinery circulation industry is open, the higher industry of Market Orientation, there are distributors in industry more, collection
The features such as moderate is low, market competition is lack of standardization, so that the competition of agricultural machinery circulation market is very fierce.In addition, as country is to agricultural
The reinforcement of support on policy dynamics, the increase of the allowance for purchasing agricultural machinery project funds bring the same of further prosperity to Farm Machinery Market
When, also aggravate the market competition in industry.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of centrifugation negative pressure grain screening
Agricultural apparatus and method, structure is simple, and principle is simple, can carry out centrifugal screening according to the different-grain diameter grade of cereal, together
When the cereal that screens out completed the removal of impurity, effect is good.
Technical solution: to achieve the above object, technical scheme is as follows:
Be centrifuged negative pressure grain screening agricultural apparatus, including feed pipe, screening bucket, blanking pedestal and drying unit, it is described into
Expects pipe setting connection is connected in the upper end of screening bucket, the bottom of the screening bucket with blanking pedestal, the blanking of the blanking pedestal
End is corresponding with the feed end of drying unit, and blanking pedestal support is set on drying unit.
Further, the screening bucket includes negative pressure channel exocoel, negative pressure inner cavity, screen tray, rotary bottom support, electricity from outside to inside
Machine and telescoping cylinder, the negative pressure channel exocoel surround setting in negative pressure inner cavity periphery, the negative pressure channel exocoel and negative pressure inner cavity
Between be connected to by upper air hole, air inlet, the bottom of the negative pressure channel exocoel are provided at the top of the negative pressure inner cavity
It is provided with and communicated with extractor fan, the bottom of the extractor fan is provided with gas outlet;The telescoping cylinder is supported by bracket to be arranged
In the lower section of negative pressure inner cavity, the movable end of the telescoping cylinder is provided with motor, the bottom at the driving end and rotary bottom support of the motor
The setting of portion's central vertical;It is lifted on the rotary bottom support and is equipped with screen tray, and rotate driving screen tray centrifugal rotation;The sieve
Feed pipe is provided with right above disk.
It further, further include pod, the pod is perforative frustum cone structure, and upper surface is small, and lower end surface is big;Institute
State pod and be provide with installation down from motor, the bottom of the pod is erected on bracket, the lower end surface of the pod with
A ring gap channel is kept between negative pressure inner cavity, is used for blanking.
Further, the bottom of the screening bucket, and be located at the lower end surface of the pod or less position and be provided with a circle
Seep air port, the adjustable section for seeping air port.
Further, it is uniformly distributed on the outer wall of the pod and is provided with electric heating wire.
Further, the rotary bottom support by centre to edge by circumference be disposed with intermediolateral column, several interior loop pillars and
Several outer loop pillars, the height of the intermediolateral column are greater than the height of interior loop pillar, and the height of the interior loop pillar is greater than the height of outer loop pillar;
The intermediolateral column is located at the centre of rotary bottom support, and the outer loop pillar is located at an outer ring at least circumference for rotary bottom support, the inner ring
Column is on at least circumference between intermediolateral column and outer loop pillar.
Further, the screen tray includes being disposed with the first stepped sieve chamber, the by circumference by centre to edge
Two sieve chambers and third sieve chamber, are higher than the second sieve chamber present position by the first sieve chamber, the second sieve chamber is higher than third and sieves chamber present position;
Several first sieve pores are offered on the wall body of the first sieve chamber, and several second sieves are offered on the wall body of the second sieve chamber
Hole offers several third sieve pores, the hole of first sieve pore, the second sieve pore and third sieve pore on the wall body of third sieve chamber
Diameter is sequentially reduced;And if it is described first sieve chamber, second sieve chamber and third sieve chamber bottom offer respectively perforative first leak hole,
Dry second leak hole and several third leak holes, the size of first leak hole, several second leak holes and several third leak holes respectively with
The size of intermediolateral column, several interior loop pillars and several outer loop pillars matches.
Further, the shape of the blanking pedestal is perforative inverted round table structure, and upper surface is big, and lower end surface is small.
It is centrifuged the working method of negative pressure grain screening agricultural apparatus:
Extractor fan is opened, two air circulation streams is formed, is largely first air stream by being penetrated among air inlet
Into screen tray, air hole is spread outward to by screen tray center, then continues along and is advanced into exhausting dress under negative pressure channel exocoel
Set the negative pressuren zone to be formed;
Fraction is that Article 2 air stream is upward along the outer wall of pod by seeping air port, and air stream carries the heat of electric heating wire
Amount, so that heat is full of the negative pressure inner cavity of pod area above;Then this burst of air stream is incorporated in first air stream;
Cereal is entered in the first sieve chamber of screen tray by feed pipe, when the cereal of the first intracavitary entrance of sieve reaches threshold values,
Feed pipe stops charging, and rotary bottom support is bonded matching with screen tray completely, and rotary bottom support drives screen tray to be centrifuged circle rotation, the first sieve
Cereal in chamber gradually sieves chamber according to particle size dispersion to the second sieve chamber and third by the first sieve chamber;The particulate matter of impurity partial size with
First air stream takes negative pressure inner cavity out of;
Rotary bottom support stops rotating, and rotary bottom support passes through the upward support of limit plate, rotary bottom support and sieve to bottom offset, screen tray
Disk being embedded mated condition completely by being detached from;Rotary bottom support is mutually disengaged to bottom offset, loop pillar outer first with third leak hole, and
Outer loop pillar and third leak hole generate the first spacing between each other, and rotary bottom support rotates again, continue rotation and drive screen tray rotation, the
Path cereal centrifugation in one spacing is thrown away;
Rotary bottom support stops rotating, and rotary bottom support continues to bottom offset, and interior loop pillar is mutually disengaged with the second leak hole, and loop pillar
The second spacing is generated between each other with the second leak hole, and rotary bottom support rotates again, and screen tray is static, the central diameter cereal in the second spacing
Centrifugation is thrown away;
Rotary bottom support stops rotating, and rotary bottom support continues to bottom offset, and intermediolateral column is mutually disengaged with the first leak hole, screen tray with
It being completely disengaged between rotary bottom support, intermediolateral column and the first leak hole generate third spacing between each other, and rotary bottom support rotates again, the
Major diameter cereal centrifugation in three spacing is thrown away;
Rotary bottom support rotate to intermediolateral column, several interior loop pillars and several outer loop pillars respectively with first sieve chamber, second sieve chamber and
Third sieve chamber matching is raised above rotary bottom support when corresponding to, until being bonded matching completely with screen tray.
The utility model has the advantages that the configuration of the present invention is simple, principle is simple, can carry out according to the different-grain diameter grade of cereal centrifugal
Screening, while the cereal screened out has completed the removal of impurity, effect is good.
1) it realizes that cereal is realized according to different-grain diameter grade by the method for centrifuge separation to separate, the process separated herein
In, it is adjoint with negative pressure system, the impurity in cereal separate herein during as negative-pressure adsorption is gone out, isolated difference
The cereal of partial size passes sequentially through the blanking of blanking pedestal to specified position in a different order;During the separation process, it can open
Desiccant electric heating system, so that negative pressure inner cavity forms the temperature that drying has, it is dry high during realizing separation
Warm negative pressure gas flow penetrates between each grain, and drying effect is splendid.
2) pod shape design and installation site design so that most of air inlet be from enterprising port into
Enter, prevents the excessive too strong inlet air flow in lower section from causing excessive interference to whereabouts cereal;Again matching design have seep air port and its
Seep the design position in air port, the high temperature air stream that negative pressure inner cavity is diffuseed to form from the bottom to top, so that dry effect
Fruit it is further preferred that, such design also avoids dry heat system and is directly arranged too close to the drying caused by screen tray position
Cereal caused by excessively destroys;Such high temperature air stream is flowing simultaneously, avoids non-flowing type hot-air to a certain region
It is long-term baking caused by cereal destroy.
3) design structure and working method that the rotation between screen tray and rotary bottom support drives and gradually disengages, cleverly
So that cereal realizes the separation by the progress of partial size grade gradually and orderly, structure is simple, excellent, takes full advantage of negative pressure inner cavity
Inner space and drying heating effect utilization.
4) what is flowed in negative pressure channel exocoel is the stream of hot air extracted out from negative pressure inner cavity, can by this burst of stream of hot air
Effectively to make the temperature of negative pressure inner cavity constant, and internal whole temperature graded region tends to be constant for a long time, no
It is influenced by the external world.
5) it is uniformly distributed on the outer wall of pod and is provided with electric heating wire to cereal prebake, after cereal is by partial size separation
Further further dried in the drying unit that blanking pedestal corresponds to blanking.
Detailed description of the invention
Accompanying drawing 1 is the structural representation of the present invention one;
Attached drawing 2 is structural schematic diagram two of the invention;
Attached drawing 3 is structural schematic diagram three of the invention;
Attached drawing 4 is structural schematic diagram four of the invention;
Attached drawing 5 is partial structural diagram one of the invention;
Attached drawing 6 is partial structural diagram two of the invention.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
Such as attached drawing 1,2,3 and 4, it is centrifuged negative pressure grain screening agricultural apparatus, including feed pipe 1, screening bucket 2, blanking pedestal 3
With drying unit 4, the setting of feed pipe 1 connection connects in the upper end of screening bucket 2, the bottom of the screening bucket 2 and blanking pedestal 3
Logical, the discharging end of the blanking pedestal 3 is corresponding with the feed end of drying unit 4, and the blanking pedestal 3 support is set to drying
On device 4.The shape of the blanking pedestal 3 is perforative inverted round table structure, and upper surface is big, and lower end surface is small.
The screening bucket 2 includes negative pressure channel exocoel 11, negative pressure inner cavity 12, screen tray 13, rotary bottom support 14, electricity from outside to inside
Machine 15 and telescoping cylinder 16, the negative pressure channel exocoel 11 surround setting in 12 periphery of negative pressure inner cavity, the negative pressure channel exocoel 11
It is connected between negative pressure inner cavity 12 by upper air hole 121, the top of the negative pressure inner cavity 12 is provided with air inlet 9, described
The bottom of negative pressure channel exocoel 11 is provided with and communicated with extractor fan 6, and the bottom of the extractor fan 6 is provided with gas outlet 61;Institute
It states telescoping cylinder 16 and supports the lower section for being set to negative pressure inner cavity 12 by bracket 8, the movable end of the telescoping cylinder 16 is provided with motor
15, the driving end of the motor 15 and the bottom center of rotary bottom support 14 are vertically arranged;Cooperation is lifted on the rotary bottom support 14
It is provided with screen tray 13, and rotates driving 13 centrifugal rotation of screen tray;The surface of the screen tray 13 is provided with feed pipe 1.
What is flowed in negative pressure channel exocoel 11 is the stream of hot air extracted out from negative pressure inner cavity, can by this burst of stream of hot air
Effectively to make the temperature of negative pressure inner cavity constant, and internal whole temperature graded region tends to be constant for a long time, no
It is influenced by the external world.
It further include pod 17 such as attached drawing 6, the pod 17 is perforative frustum cone structure, and upper surface is small, lower end surface
Greatly;The pod 17 is provide with installation from motor 15 down, and the bottom of the pod 17 is erected on bracket 8, the water conservancy diversion
A ring gap channel is kept between the lower end surface and negative pressure inner cavity 12 of cover 17, is fallen for cereal.The bottom of the screening bucket 2,
And be located at the pod 17 lower end surface below position be provided with a circle seep air port 7, it is described seep air port 7 adjustable section,
The position that air port 7 is arranged is seeped, lower section may be implemented to enter the air stream of negative pressure inner cavity to be shallow bid, while change can also be passed through
The size for seeping air port 7 further realizes.It is uniformly distributed on the outer wall of the pod 17 and is provided with electric heating wire 171.Pod
Shape design and the design of installation site so that most of air inlet is entered from enterprising port, prevent below mistake
Big too strong inlet air flow causes excessive interference to whereabouts cereal;Matching design has the design position seeped air port and its seep air port again
Set, the high temperature air stream that negative pressure inner cavity is diffuseed to form from the bottom to top so that drying effect it is further preferred that, it is such to set
Meter, also avoid dry heat system directly be arranged too close to the drying caused by screen tray position excessively caused by cereal break
It is bad;Such high temperature air stream is flowing simultaneously, avoids non-flowing type hot-air caused by some region of long-term baking
Cereal destroys.
Such as attached drawing 5, the rotary bottom support 14 is disposed with intermediolateral column 141, several inner rings by circumference by centre to edge
Column 142 and several outer loop pillars 143, the height of the intermediolateral column 141 are greater than the height of interior loop pillar 142, the height of the interior loop pillar 142
Degree is greater than the height of outer loop pillar 143;The intermediolateral column 141 is located at the centre of rotary bottom support 14, and the outer loop pillar 143 is located at rotation
The outer ring of a collet 14 at least circumference, an at least circumference of the interior loop pillar 142 between intermediolateral column 141 and outer loop pillar 143
On.
The screen tray 13 includes being disposed with the first stepped sieve chamber 131, second by circumference by centre to edge to sieve
Chamber 132 and third sieve chamber 133, are higher than the second sieve 132 present position of chamber by the first sieve chamber 131, the second sieve chamber 132 is sieved higher than third
133 present position of chamber;Several first sieve pores 134 are offered on the wall body of the first sieve chamber 131, the second sieve chamber 132
Several second sieve pores 135 are offered on wall body, offer several third sieve pores 136 on the wall body of the third sieve chamber 133, it is described
The aperture of first sieve pore 134, the second sieve pore 135 and third sieve pore 136 is sequentially reduced;And the first sieve chamber 131, second sieves chamber
132 and third sieve chamber 133 bottom offer respectively perforative first leak hole 137, several second leak holes 138 and several thirds leakage
Hole 139, the size of first leak hole 137, several second leak holes 138 and several third leak holes 139 respectively with intermediolateral column 141,
The size of several interior loop pillars 142 and several outer loop pillars 143 matches.Between screen tray and rotary bottom support rotation driving and gradually
The design structure and working method of disengaging cleverly make cereal realize the separation by the progress of partial size grade gradually and orderly, structure
Simply, excellent takes full advantage of the utilization of the inner space of negative pressure inner cavity and the heating effect of drying.
It is centrifuged the working method of negative pressure grain screening agricultural apparatus:
Extractor fan 6 is opened, two air circulation streams is formed, is largely first air stream by being worn among air inlet 9
It penetrates into screen tray 13, air hole 121 is spread outward to by 13 center of screen tray, then continues along 11 downlink of negative pressure channel exocoel
The negative pressuren zone formed into extractor fan 6;
Fraction is that Article 2 air stream is upward along the outer wall of pod 17 by seeping air port 7, and air stream carries electric heating wire
171 heat, so that heat is full of the negative pressure inner cavity 12 of 17 area above of pod;Then this burst of air stream is incorporated to first sky
In air-flow;
Cereal is entered in the first sieve chamber 131 of screen tray 13 by feed pipe 1, when the cereal entered in the first sieve chamber 131 reaches
When to threshold values, feed pipe 1 stops charging, and rotary bottom support 14 is bonded matching, the driving screen tray 13 of rotary bottom support 14 with screen tray 13 completely
It is centrifuged circle rotation, the cereal in the first sieve chamber 131 is by the first sieve chamber 131 gradually according to particle size dispersion to the second sieve 132 He of chamber
Third sieves chamber 133;The particulate matter of impurity partial size takes negative pressure inner cavity 12 out of with first air stream;
Rotary bottom support 14 stops rotating, and rotary bottom support 14 passes through the upward support of limit plate 18, rotation to bottom offset, screen tray 13
Collet 14 is with screen tray 13 by being detached from being embedded mated condition completely;Rotary bottom support 14 is to bottom offset, loop pillar 143 outer first and
Three leak holes 139 are mutually disengaged, and outer loop pillar 143 and third leak hole 139 generate the first spacing between each other, and rotary bottom support 14 is again
Rotation continues rotation and screen tray 13 is driven to rotate, and the path cereal centrifugation in the first spacing is thrown away;
Rotary bottom support 14 stops rotating, and rotary bottom support 14 continues to bottom offset, and interior loop pillar 142 and the second leak hole 138 are mutually
It is detached from, and loop pillar 142 and the second leak hole 138 generate the second spacing between each other, rotary bottom support 14 rotates again, and screen tray 13 is quiet
Only, the central diameter cereal centrifugation in the second spacing is thrown away;
Rotary bottom support 14 stops rotating, and rotary bottom support 14 continues to bottom offset, and intermediolateral column 141 and the first leak hole 137 are mutually
It is detached from, is completely disengaged between screen tray 13 and rotary bottom support 14, between intermediolateral column 141 and the mutual generation third of the first leak hole 137
Away from rotary bottom support 14 rotates again, and the major diameter cereal centrifugation in third spacing is thrown away;
The rotation of rotary bottom support 14 sieves chamber with first respectively to intermediolateral column 141, several interior loop pillars 142 and several outer loop pillars 143
131, the second sieve chamber 132 and third sieve chamber 133 matching are raised above rotary bottom support 14 when corresponding to, until pasting completely with screen tray 13
Close matching.
It realizes that cereal is realized according to different-grain diameter grade by the method for centrifuge separation to separate, during separating herein,
It is adjoint with negative pressure system, the impurity in cereal separate herein during as negative-pressure adsorption is gone out, the different grains of separation
The cereal of diameter passes sequentially through the blanking of blanking pedestal to specified position in a different order;During the separation process, it can open dry
Dry electric heating system, so that negative pressure inner cavity forms the temperature that drying has, during realizing separation, dry high temperature
Negative pressure gas flow penetrates between each grain, and drying effect is splendid.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.