CN106717654A

CN106717654A - A kind of self-unloading binary silo of save space

Info

Publication number: CN106717654A
Application number: CN201611269100.XA
Authority: CN
Inventors: 申俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-11-27
Filing date: 2016-11-27
Publication date: 2017-05-31
Also published as: CN106717631A; CN106613019A; CN106665005A; CN106576634A; CN106613020A

Abstract

The invention discloses a kind of self-unloading binary silo of save space, including binary warehouse and discharge mechanism；Binary warehouse has the first warehouse and the second warehouse；A ventilation heat exchange system is equipped with first warehouse and the second warehouse；Discharge mechanism includes the casing with the first unloading chamber and the second unloading chamber, the first auger for drawing off grain storage in the first unloading chamber, the second auger for drawing off grain storage in the second unloading chamber, and the drive device for driving the first auger and the second auger to rotate；First auger includes first rotating shaft, the first spiral plate and the first driven gear；Second auger includes the second rotating shaft, secondary spiral lamina and the second driven gear；Drive device includes motor and clutch linkage device；Clutch linkage device includes support body, power transmission shaft, clutch driving gear, belt pulley and translation locating part.Structure of the present invention more compact and reasonable.

Description

A kind of self-unloading binary silo of save space

Technical field

The invention belongs to barn structure design field, and in particular to a kind of self-unloading binary silo of save space.

Background technology

Food problem is one of current pressing issues highly visible, and China every year will as the first in the world populous nation Substantial amounts of grain is consumed, there is grain country to stablize healthily developing industry, national defence, service trade, science and culture cause etc.. Food problem is not only economy and livelihood issues, is also development and safety problem.With the fast development of pollution-free food and people The continuous improvement of living standard, grain green storage technology has obtained significant progress in China.In " Chinese stored grain ecological system Under the guidance of theoretical system ", just there is deep change in the foodstuff preservation theory of China, View of Grain Storage Technoiogy is by tradition Grain storage technology develops to green grain storage technology, is developed from extensive warehousing management to the warehousing management that becomes more meticulous.

Silo traditional at present, mostly using monolithic design, can only simultaneously store a kind of grain, unitary function.Also there is portion Divide silo to use catamaran design, but but use two sets of single each grain self-dischargings of discharge mechanism, cause occupation of land larger, it is relatively costly Shortcoming.Additionally, traditional silo, exchanged heat cooling using top layer more than its ventilating system, it is difficult when relatively deep, area is wider for grain storage Fast cooling cooling is carried out with to internal layer grain storage.

The content of the invention

Taken up room it is an object of the invention to provide one kind smaller, cost is relatively low, can carry out fast prompt drop to internal layer grain storage The self-unloading binary silo of temperature.

Realizing the technical scheme of the object of the invention is：A kind of self-unloading binary silo of save space, including binary warehouse and Discharge mechanism；Binary warehouse has the first warehouse and the second warehouse；It is characterized in that：It is equipped with first warehouse and the second warehouse One ventilation heat exchange system；Ventilation heat exchange system includes air exhauster, induced-draught fan and ventilation shaft；Ventilation shaft includes outer ring wind Pipe, inner ring airduct and for connecting and support the support bar of body；Inner ring airduct is located in the airduct enclosed space of outer ring；Inner ring wind The opening of bottom of the tube is connected with induced-draught fan, and the opening of outer ring BOD is connected with air exhauster；The top and outer ring of inner ring airduct The top connection of airduct；Array mesh is equipped with the body of outer ring airduct and inner ring airduct；Discharge mechanism includes thering is the One unloading chamber and the casing in the second unloading chamber, the first auger for drawing off grain storage in the first unloading chamber, unload for drawing off second Second auger of grain storage in grain chamber, and the drive device for driving the first auger and the second auger to rotate；First unloading chamber Connected with the first warehouse, the second unloading chamber connects with the second warehouse；First auger includes first rotating shaft, the first spiral plate and first Driven gear；Second auger includes the second rotating shaft, secondary spiral lamina and the second driven gear；First rotating shaft and the second rotating shaft are mutual Parallel, the hand of spiral of the first spiral plate and secondary spiral lamina is opposite；Drive device includes motor and clutch linkage device； Clutch linkage device includes support body, rotates the power transmission shaft set on support body, the clutch transmission tooth that can be moved back and forth on power transmission shaft The belt pulley take turns, being fixedly installed on power transmission shaft and the translation locating part for the translation of spacing clutch driving gear；Translation limit Position part is provided with the guiding tooth in the teeth groove that can extend into clutch driving gear, is oriented to tooth just to the middle-end of power transmission shaft external thread part Set；Power transmission shaft is provided with external thread part, and the axis hole of clutch driving gear is provided with internal thread part, and clutch driving gear is screwed onto biography On the external thread part of moving axis；One end of power transmission shaft external thread part is belt pulley, and the other end is provided in the limiting block on power transmission shaft Platform；Abutted when clutch driving gear is moved to one end of power transmission shaft external thread part over pulleys carried, now clutch driving gear In the first transmission station, the first driven gear is driven to rotate by clutch driving gear when power transmission shaft is rotated forward；Work as clutch transmission Gear is connected on limiting block platform when being moved to the other end of power transmission shaft external thread part, and now clutch driving gear is in second and passes Start building position, to drive the second driven gear to rotate by clutch driving gear when power transmission shaft is inverted；Each spigot surface is cambered surface；First from The moving gear gear teeth and the second driven gear gear teeth are being provided with gap e, clutch driving gear along respective center of rotation axis direction The facewidth of the gear teeth is f, and the facewidth of the guiding tooth of translation locating part is g, and 2f+g>e>f；It is additionally provided with power transmission shaft for spacing skin The anticreep double nut component of belt wheel, belt pulley is fixedly installed on power transmission shaft by key pin, a side of belt pulley and transmission The external thread part of axle is provided adjacent to, and another side and anticreep double nut component of belt pulley are provided adjacent to.

The present invention has following positive technique effect：（1）Due to the inner ring airduct with the deep enough internal layer grain storage of energy and outward Circle airduct, effectively can be aerated cooling to internal layer grain storage, quick cooling.（2）The more compact simplification of structure of the present invention, structure Relatively reasonable, two augers are only driven with same motor, are compared with traditional product, save a motor, effectively Reduces cost.

Brief description of the drawings

Fig. 1 is a kind of structural representation of the first structure of the invention；

Fig. 2 is a kind of dimensional structure diagram of discharge mechanism in silo shown in Fig. 1；

Fig. 3 is a kind of explosive view of discharge mechanism shown in Fig. 2；

Fig. 4 is a kind of top view of discharge mechanism shown in Fig. 2；

Fig. 5 is the close-up schematic view at A in Fig. 4；

Fig. 6 is a kind of dimensional structure diagram of clutch linkage device in discharge mechanism shown in Fig. 2；

Fig. 7 is a kind of half-sectional structural representation of clutch linkage device shown in Fig. 6；

Fig. 8 is a kind of dimensional structure diagram of clutch driving gear in clutch linkage device shown in Fig. 6；

Fig. 9 is a kind of dimensional structure diagram of ventilation heat exchange system in silo shown in Fig. 1；

Figure 10 is a kind of dimensional structure diagram that body is in charge of at the middle part of ventilation heat exchange system shown in Fig. 9；

Figure 11 is a kind of dimensional structure diagram of information acquiring instrument in silo shown in Fig. 1；

Figure 12 is a kind of top view of information acquiring instrument shown in Figure 11；

Figure 13 is a kind of explosive view of information acquiring instrument shown in Figure 11；

Figure 14 is a kind of explosive view that information acquiring instrument shown in Figure 11 is further decomposed；

Figure 15 is a kind of sectional view of information acquiring instrument shown in Figure 11；

Figure 16 is a kind of sectional view of barrel shell in information acquiring instrument shown in Figure 11；

Figure 17 is a kind of sectional view of traveling rolling pipe in information acquiring instrument shown in Figure 11；

Figure 18 is a kind of dimensional structure diagram of clutch linkage device in second structure of the invention；

Figure 19 is a kind of dimensional structure diagram of power transmission shaft in clutch linkage device shown in Figure 18；

Figure 20 is a kind of dimensional structure diagram of clutch linkage device middle belt pulley shown in Figure 18；

Figure 21 is a kind of dimensional structure diagram of clutch driving gear in clutch linkage device shown in Figure 18.

Specific embodiment

（Embodiment 1）

Fig. 1 to Figure 17 shows the first specific embodiment of the invention.

The present embodiment is a kind of self-unloading binary silo that fast cooling can be carried out to internal layer grain storage, as shown in Fig. 1 to Fig. 8, Including binary warehouse 1 and the discharge mechanism 2 being arranged on below binary warehouse.

Binary warehouse 1 has the first warehouse 11 and the second warehouse 12 being arranged side by side, and the bottom in the first warehouse is tapered, its There is the first discharging opening at bottom centre；The bottom in the second warehouse is also tapered, has the second discharging opening at its bottom centre.This In embodiment, the bottom in binary warehouse is provided with four daggers 13, and binary warehouse is stood on the ground by four daggers.In tool In body practice, also shouldn't dagger, but binary warehouse is directly anchored on wall or on carrier, such as by the present embodiment For united reaper.

Discharge mechanism 2 includes casing 21, the first auger 22, the second auger 23 and is twisted for the first auger of drive and second The drive device 3 that dragon rotates.

Casing include base 211 and and capping 212, dividing plate 213 is provided with base, dividing plate is separated into chassis interior space Etc. big the first unloading chamber 214 and the second unloading chamber 215；Capping is provided with the first grain-entering mouth 216 connected with the first unloading chamber, The bottom in the first unloading chamber is provided with the first grain outlet 217；The second grain-entering mouth connected with the second unloading chamber is additionally provided with capping 218, the bottom in the second unloading chamber is provided with the second grain outlet 219.First grain-entering mouth and the first warehouse are connected.

First auger includes first rotating shaft 221, the first spiral plate 222 and the first driven gear 223；The main body of first rotating shaft It is rotatably arranged in the first unloading chamber, casing is stretched out in one end of first rotating shaft, and the first driven gear is fixedly installed on first rotating shaft The one end for stretching out casing on；First spiral plate is fixedly installed in first rotating shaft, and the first spiral plate is located at the first unloading chamber In.Second grain-entering mouth and the second warehouse are connected.

Second auger includes the second rotating shaft 231, the driven gear 233 of secondary spiral lamina 232 and second；The main body of the second rotating shaft It is rotatably arranged in the second unloading chamber, casing is stretched out in one end of the second rotating shaft, and the second driven gear is fixedly installed on the second rotating shaft The one end for stretching out casing on；Secondary spiral lamina is fixedly installed in the second rotating shaft, and secondary spiral lamina is located at the second unloading chamber In.

First rotating shaft and the second shaft parallel are set, and the hand of spiral of the first spiral plate and secondary spiral lamina is opposite.First Auger and the second auger are elapsed to grain outlet the grain storage in respective cavity by rotating push mode.

Drive device 3 includes being provided with the motor 31 and clutch linkage device 4 of driving wheel 311.

As shown in Fig. 6 to Fig. 8, clutch linkage device 4 includes support body 41, the power transmission shaft 42 rotated on setting support body, fixes Belt pulley 43, the clutch driving gear for driving the first driven gear or the second driven gear to rotate being arranged on power transmission shaft 44 and for spacing clutch driving gear translation translation locating part 47；Power transmission shaft is provided with external thread part 421, clutch transmission The axis hole of gear is provided with internal thread part 441, and clutch driving gear is screwed onto on the external thread part of power transmission shaft, and clutch driving gear can Moved back and forth along center transmission shaft axis direction on power transmission shaft external thread part；The driving wheel of motor passes through the band of belt 312 Dynamic belt pulley and power transmission shaft reciprocating rotation.

In the present embodiment, translation locating part is fixed on support body, and translation locating part is provided with and can extend into clutch transmission tooth Guiding tooth 471 in the teeth groove of wheel；Translation locating part is just set to the middle-end of power transmission shaft external thread part.

In the present embodiment, the first driven gear is arranged on side of second driven gear away from casing so that first is driven Gear tooth and the second driven gear gear teeth are being provided with gap e along center of rotation axis direction, the clutch driving gear gear teeth The facewidth is f, and the facewidth of the guiding tooth of translation locating part is g, and 2f+g>e>f.

One end of power transmission shaft external thread part is belt pulley, and the other end is provided in the limiting block platform 422 on power transmission shaft；When from Close when travelling gear is moved to one end of power transmission shaft external thread part and abut over pulleys carried, now clutch driving gear is in first Transmission station, drives the first driven gear to rotate when power transmission shaft is rotated forward by clutch driving gear；When clutch driving gear movement To power transmission shaft external thread part the other end when be connected on limiting block platform, now clutch driving gear be in second transmission station, The second driven gear is driven to rotate by clutch driving gear when power transmission shaft is inverted.

Power transmission shaft is rotatably arranged on support body by two roller bearings seat 45, each roller bearing seat include bearing block 451, Rolling bearing 452 and the tail-hood 453 for preventing rolling bearing from being come off from bearing block.

The anticreep double nut component 46 for spacing belt pulley is additionally provided with power transmission shaft, belt pulley is fixed by key pin and set Put on power transmission shaft, a side of belt pulley and the external thread part of power transmission shaft are provided adjacent to, another side and anticreep of belt pulley Double nut component is provided adjacent to, so as to prevent belt pulley from being slid with respect to power transmission shaft.

In the present embodiment, because clutch driving gear is moved back and forth along center transmission shaft axis direction, first is driven The guiding tooth of gear, the second driven gear, the gear teeth 442 of clutch driving gear and translation locating part, in along power transmission shaft On the direction of the parallel lines of heart axis, the guiding sliding surface 101 of arc is equipped with the two sides at its both ends, is easy to each gear teeth Move into engagement.

As described in Fig. 1, a ventilation heat exchange system 7 is equipped with the first warehouse and the second warehouse.

As shown in Fig. 9 and Figure 10, each ventilation heat exchange system 7 includes air exhauster 71, induced-draught fan 72 and ventilation shaft 73；Ventilation Pipeline includes outer ring airduct 731, inner ring airduct 732 and for connecting and supports the support bar 733 of body；Inner ring airduct is located at outer In circle airduct enclosed space.One end of ventilation shaft is connected with air exhauster, and the other end is connected with induced-draught fan；Taken out by this suction one Air supply mode, may be such that whole ventilation shaft wind-force obtain more quickly circulation so that improving heat exchanging efficiency.

In the present embodiment, the top of inner ring airduct connects with the top of outer ring airduct, the opening of inner ring BOD and suction Blower fan is connected, and the opening of outer ring BOD is connected with air exhauster.

In the present embodiment, each support bar is fixedly linked by welding manner and ventilation shaft body.

In the present embodiment, multiple array mesh 74 through body, array net are additionally provided with the body of ventilation shaft Hole is generally distributed on the body of outer ring airduct and inner ring airduct；This structure causes that ventilation shaft can not only realize hot friendship Change, the gas in the body of part can be also discharged into grain storage by array mesh, greatly reduce temperature fall time, lifting cooling Efficiency.Meanwhile, if being activity suppression gas, such as carbon dioxide or nitrogen to what is be passed through in ventilation shaft, or add The gas of certain drug ingedient, also targetedly can carry out disease prevention and cure and kill insect pest to grain storage.

As shown in Figure 1, it is equipped with least one information acquiring instrument 6 in the first warehouse and the second warehouse.

As shown in Figure 11 to Figure 17, each information acquiring instrument 6 include barrel shell 61, be rotatably arranged in barrel shell master gear 62, Be rotatably arranged on barrel shell four rolling pipes 63 of advancing, be fixedly installed on each pinion 64 advanced in rolling pipe outer wall, for band The driving motor 65 that dynamic master gear is rotated；Four pinions are uniformly arranged on master gear outer circumferential side, setting in a center of symmetry；Main tooth When wheel is rotated, each pinion synchronous axial system is driven.

In the present embodiment, the periphery wall of master gear is provided with driving cog 621, and internal perisporium is provided with driven tooth 622；The dynamic electricity of original The quantity of machine 65 is two, and each driving motor is provided with the output gear 651 with output gear；The driven tooth of output gear and master gear Engagement adaptation；Driving cog and pinion the engagement adaptation of master gear.

Spiral power plate 631 is fixed with the lumen wall of traveling rolling pipe, spiral power plate is with rolling pipe turn of advancing When dynamic, the material stirred in rolling pipe of advancing by spiral is obtained thrust and moves ahead or retreat.In the present embodiment, spiral power plate Center enclose to form a circular material path 639, when rolling pipe of advancing is advanced, grain storage is mainly from the circular material path and spiral Released backward in the gap between screw of power plate, this structure can in time to advance rolling pipe in feed smoothly to advance, in addition by In the presence of the circular material path, to the larger mobile space of grain storage in rolling pipe of advancing, prevent grain storage because overcrowding by spiral shell Rotation power plate is blended.

Barrel shell 61 includes the secondary cylinders 612 of main cylinder 611 and four, four secondary cylinders around main cylinder central axis into center It is symmetrical arranged；The central axis of main cylinder is also the center of rotation axis of the master gear, the center of rotation axis of each secondary cylinder Center of rotation axis with master gear is parallel.

Each two ends for advancing rolling pipe are equipped with the Taper Pipe portion 632 of reduced diameter as drag reduction portion, are advanced for reducing Resistance.

The two ends of barrel shell are respectively fixed with a coniform antidrag cap 66, and each antidrag cap is provided with a temperature sensor 67 With a humidity sensor 68, the induction end of each temperature sensor and humidity sensor is exposed independent from antidrag cap.

The first rolling bearing 633 and the second rolling bearing 634 are arranged with the outer wall of each rolling pipe of advancing, each rolling pipe of advancing Outer wall is provided with first step wall 635 and second step wall 636；

One side of barrel shell is provided with four clutch shaft bearing storage tanks 613, and four clutch shaft bearing storage tanks are located at the barrel shell end On inwall；Each first rolling bearing is embedded in a corresponding clutch shaft bearing storage tank, and the inner ring of each first rolling bearing is arranged It is fixed on corresponding one one end for rolling pipe of advancing, and the first step wall for rolling pipe of advancing is along the central axial direction pressure of the rolling pipe It is connected on the inner ring of corresponding first rolling bearing；

Another side of barrel shell is provided with four second bearing storage tanks 614, and four second bearing storage tanks are located at and expose to cylinder The shell end；Each rolling pipe of advancing is provided with male threaded joint 637；One internal thread crimp being screwed onto on male threaded joint 638, it is crimped on the outer ring of a corresponding second bearing, and the central axial direction of pipe is rolled the second bearing along the traveling Inner ring is crimped on the second step wall of traveling rolling pipe；The internal thread crimp blocks a corresponding second bearing simultaneously to be held Put the opening of groove.

Installing plate 615 is fixed with barrel shell, master gear is rotatably arranged on installing plate, the motor body of each driving motor Also it is fixedly installed on the installing plate.

Information acquiring instrument in the present embodiment is powered by built-in power to driving motor when in use, driving motor band Dynamic master gear is rotated, and then synchronously drives four traveling rolling pipes to rotate by each pinion, so as to be stored up by promotion in silo Grain and advance or retreat.

Because each antidrag cap is provided with temperature sensor and humidity sensor, the information acquiring instrument in the present embodiment is being advanced In, the temperature and humidity of drill-through grain layer can be given, so as to obtain the physical message of the grain storage of different depth, and can be by interior The radio-cell being placed in antidrag cap or barrel shell is transferred to user.

In concrete practice, it is also possible to powered to the information acquiring instrument in the present embodiment by cable and transmit data, have Body is after cable is passed through a tip for antidrag cap, to be connected with the wiring board in antidrag cap or barrel shell.

The present embodiment can also be set with lamplit camera, each coniform antidrag cap in each coniform antidrag cap Be made of transparent material so that camera can photograph the in good time state of grain storage, for example observe go mouldy, insect bite etc. Bad phenomenon, prevents and treats it in time.

Due to adding information acquiring instrument, and with locomotivity, can be to the storage of different depth diverse location in warehouse The information of grain is acquired, to obtain in good time intuitively data.

The present embodiment course of work is as follows：Grain storage in first warehouse enters in the first unloading passage through the first grain-entering mouth, The grain storage in cavity where itself is elapsed to the first grain outlet when first auger rotates；Grain storage in second warehouse is entered through second Grain mouthful enters in the second unloading passage, and the grain storage in cavity where itself is elapsed to the second grain outlet when the second auger rotates.

As shown in Figure 5, now clutch driving gear is in the second transmission station, and clutch driving gear is close to limiting block platform One side is connected on limiting block platform, and clutch driving gear and the engagement of the second driven gear are adapted to；Clutch driving gear now The second driven gear can be driven to be decided by the steering of power transmission shaft.For the present embodiment, if now power transmission shaft is rotated backward, So that clutch driving gear continues to be connected on limiting block platform, namely clutch driving gear now is equal to relative to power transmission shaft It is fixedly installed, therefore by clutch driving gear the second driven gear can be driven to rotate, namely drives the second auger to rotate.

If now power transmission shaft is rotated forward, because clutch driving gear is screwed onto on the external thread part of power transmission shaft, Liang Zheshi Loose fit, clutch driving gear will leave limiting block platform, be moved towards close to the direction of belt pulley, now clutch transmission tooth Wheel can not again drive the second driven gear to rotate.If power transmission shaft continues to rotate forward, because the gear teeth inlay card of clutch driving gear exists In the teeth groove of the second driven gear, and the second driven gear can have certain rotary resistance, so clutch driving gear will Under the spacing anti-rotation effect of the second driven gear gear teeth, translated towards close to the direction of belt pulley；Due to 2f+g>e>F, clutch The gear teeth of travelling gear do not completely disengage from the teeth groove of the second driven gear also, and the guiding tooth of guided in translation part will enter into clutch In the teeth groove of drive so that clutch driving gear continues to translate；When the gear teeth of clutch driving gear do not completely disengage from translation also During locating part, the gear teeth of clutch driving gear have been entered into the teeth groove of the first driven gear again, due to the first driven gear With certain rotary resistance, so clutch driving gear will continue to translate, until clutch driving gear close to belt pulley One side is connected on belt pulley, namely clutch driving gear reaches first and is driven station；If hereafter power transmission shaft continues to rotate forward, from Closing travelling gear can then drive the first driven gear to rotate, namely drive the first auger to rotate.

Hereafter if power transmission shaft becomes to rotate backward, clutch driving gear cannot again drive the first driven gear to rotate, And under the spacing anti-rotation effect of the first driven gear gear teeth, the guiding tooth of translation locating part and the second driven gear gear teeth, Clutch driving gear most moves to the second transmission station at last, and now clutch driving gear continues to drive the second driven tooth rotation again It is dynamic.

The more compact simplification of the present embodiment structure, relatively reasonable in structure, two augers are only driven with same motor, and Traditional product is compared, and saves a motor, and not only cost is relatively low, is also reduced entirety and is taken up room, and is conducive to small-sized Change, especially meet carrier and install and use demand.

（Embodiment 2）

Figure 18 to Figure 21 shows second specific embodiment of the invention.

The present embodiment and embodiment 1 are essentially identical, and difference is：As shown in Figure 18 to Figure 21, in the present embodiment A side nearer apart from belt pulley of limiting block platform, a side and clutch transmission nearer apart from limiting block platform of belt pulley The two side ends of gear are equipped with gear tooth 5, and each gear tooth is provided with and holds pushing surface 51 and spigot surface 52, and each spigot surface is cambered surface.Clutch transmission When being translated towards limiting block platform direction, clutch driving gear gear tooth holds the gear tooth that pushing surface is finally connected to limiting block platform to gear Hold in pushing surface；Clutch driving gear when being translated towards belt pulley direction, finally support by the pushing surface of holding of clutch driving gear gear tooth The gear tooth for being connected on belt pulley is held in pushing surface；This force way allows that clutch driving gear bears bigger stress.

Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description To make other changes in different forms.There is no need and unable to be exhaustive to all of implementation method.And these Belong to obvious change that connotation of the invention extends out or variation still falls within protection scope of the present invention.

Claims

1. the self-unloading binary silo of a kind of save space, including binary warehouse and discharge mechanism；Binary warehouse has the first warehouse With the second warehouse；It is characterized in that：A ventilation heat exchange system is equipped with first warehouse and the second warehouse；Ventilation heat exchange system Including air exhauster, induced-draught fan and ventilation shaft；Ventilation shaft includes outer ring airduct, inner ring airduct and for connecting and supports body Support bar；Inner ring airduct is located in the airduct enclosed space of outer ring；The opening of inner ring BOD is connected with induced-draught fan, outer ring wind The opening of bottom of the tube is connected with air exhauster；The top of inner ring airduct connects with the top of outer ring airduct；Outer ring airduct and inner ring wind Array mesh is equipped with the body of pipe；Discharge mechanism includes the casing with the first unloading chamber and the second unloading chamber, is used for The first auger of grain storage in the first unloading chamber is drawn off, the second auger for drawing off grain storage in the second unloading chamber, and for band The drive device that dynamic first auger and the second auger are rotated；First unloading chamber connects with the first warehouse, the second unloading chamber and second Warehouse is connected；First auger includes first rotating shaft, the first spiral plate and the first driven gear；Second auger include the second rotating shaft, Secondary spiral lamina and the second driven gear；First rotating shaft and the second rotating shaft are parallel to each other, the first spiral plate and secondary spiral lamina The hand of spiral is opposite；Drive device includes motor and clutch linkage device；Clutch linkage device includes support body, rotates setting Power transmission shaft on support body, the clutch driving gear that can be moved back and forth on power transmission shaft, the belt pulley being fixedly installed on power transmission shaft And for the translation locating part of spacing clutch driving gear translation；Translation locating part is provided with and can extend into clutch driving gear Teeth groove in guiding tooth, be oriented to tooth and just the middle-end of power transmission shaft external thread part set；Power transmission shaft is provided with external thread part, clutch The axis hole of travelling gear is provided with internal thread part, and clutch driving gear is screwed onto on the external thread part of power transmission shaft；Power transmission shaft external screw thread The one end in portion is belt pulley, and the other end is provided in the limiting block platform on power transmission shaft；When clutch driving gear is moved to power transmission shaft Abutted during one end of external thread part over pulleys carried, now clutch driving gear is in the first transmission station, when power transmission shaft is rotated forward The first driven gear is driven to rotate by clutch driving gear；When clutch driving gear is moved to the another of power transmission shaft external thread part It is connected to during end on limiting block platform, now clutch driving gear is in the second transmission station, is passed by clutch when power transmission shaft is inverted Moving gear drives the second driven gear to rotate；Each spigot surface is cambered surface；The first driven gear gear teeth and the second driven gear gear teeth Gap e is being provided with along respective center of rotation axis direction, the facewidth of the clutch driving gear gear teeth is f, translates leading for locating part It is g, and 2f+g to the facewidth of tooth>e>f；The anticreep double nut component for spacing belt pulley, belt are additionally provided with power transmission shaft Wheel is fixedly installed on power transmission shaft by key pin, and a side of belt pulley and the external thread part of power transmission shaft are provided adjacent to, belt pulley Another side and anticreep double nut component be provided adjacent to.