CN112833640A

CN112833640A - Dehydration drying system and process for preparing microbial compound fertilizer particles

Info

Publication number: CN112833640A
Application number: CN202110021146.4A
Authority: CN
Inventors: 顾健健
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-05-25

Abstract

The invention discloses a dehydration drying system for preparing microbial compound fertilizer particles, which comprises a base platform, wherein a dry mixed particle receiving box is fixedly installed on one side of the base platform, a dry mixed particle receiving bin with an opening at the upper part is arranged in the dry mixed particle receiving box, a fertilizer particle mixing and drying device is arranged right above the dry mixed particle receiving bin, and the fertilizer particle mixing and drying device can downwards pour mixed, dried and dehydrated mixed fertilizer particles into the dry mixed particle receiving bin; the invention has simple structure and has the functions of uniform mixing and mild dehydration.

Description

Dehydration drying system and process for preparing microbial compound fertilizer particles

Technical Field

The invention belongs to the field of compound fertilizer dehydration.

Background

The condition that the biological compound fertilizer particles are bonded easily in the storage process due to excessive moisture content needs to be aligned before storage for dehydration treatment, and equipment with uniform mixing and mild and rapid dehydration process needs to be developed.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a dehydration drying system and a dehydration drying process for preparing microbial compound fertilizer particles, wherein the dehydration process is milder.

The technical scheme is as follows: in order to achieve the purpose, the dehydration drying system for preparing the microbial compound fertilizer particles comprises a base platform, wherein a dry mixed particle receiving box is fixedly installed on one side of the base platform, a dry mixed particle receiving bin with an opening at the upper part is arranged in the dry mixed particle receiving box, a fertilizer particle mixing drying device is arranged right above the dry mixed particle receiving bin, and the fertilizer particle mixing drying device can pour mixed, dried and dehydrated mixed fertilizer particles downwards into the dry mixed particle receiving bin.

Further, the base platform, fixed mounting has vertical support column on the base platform, the upper end of support post is fixed with the crossbeam, fertilizer granule compounding drying device installs the downside of crossbeam.

Further, the fertilizer particle mixed material drying device comprises a pair of vertical lifters, the upper ends of the lifters are fixed on the cross beam, the lower ends of the lifting rods of the two lifters are connected with a horizontal lifting beam, the fertilizer particle mixed material drying device also comprises two cantilever beams which are arranged in parallel at intervals, and the roots of the two cantilever beams are fixedly connected to the two ends of the lifting beam respectively, so that the two cantilever beams can be lifted synchronously along with the lifting beam; a horizontal annular drying pot is arranged between the two cantilever beams, and the section of a ring body of the annular drying pot is semicircular with an upward opening; the two ends of the outer wall of the annular drying pot are fixedly connected with a first rotating shaft and a second rotating shaft coaxially respectively, and the axes of the first rotating shaft and the second rotating shaft are vertically intersected with the axis of the annular drying pot; the tail ends of the two cantilever beams are respectively provided with a first bearing hole and a second bearing hole, the first rotating shaft and the second rotating shaft are respectively in running fit with the first bearing hole and the second bearing hole through bearings, the cantilever beams are fixedly provided with brake type motors through motor supports, the output ends of the brake type motors are driven to be connected with the first rotating shaft, the rotary energy of the first rotating shaft drives the annular drying pot to be followed, the axis of the first rotating shaft rotates, and therefore the posture of the annular drying pot is changed.

Further, an outer ring platform is integrally arranged on the outer ring at the upper end of the annular drying pot along the outline, an inner ring platform is integrally arranged on the inner ring at the lower end of the annular drying pot along the outline, the annular drying pot further comprises an inner fixed ring and an outer fixed ring which are fixedly installed, and the lower surfaces of the inner fixed ring and the outer fixed ring are respectively and fixedly connected with a first annular sealing gasket and a second annular sealing gasket; the upper surface of the inner ring platform of the annular drying pot is upwards sealed and attached to the first annular sealing gasket, the upper surface of the outer ring platform of the annular drying pot is upwards sealed and attached to the second annular sealing gasket, and the downward displacement of the annular drying pot enables the inner ring platform and the outer ring platform to move downwards to be separated from the first annular sealing gasket and the second annular sealing gasket.

The inner edge and the outer edge of the lower side of the ring body rotary pot cover are respectively in running fit with the inner fixed ring and the outer fixed ring through a first sealing bearing and a second sealing bearing, and a ring-shaped fertilizer particle dehydration channel is formed inside a combined structure formed by the ring body rotary pot cover and the ring-shaped drying pot;

a hot air shunting box body is coaxially arranged at the axis of the inner fixing ring, and a hot air shunting bin is arranged in the hot air shunting box body; the hot air shunting device is characterized by further comprising an air heater, wherein an air inlet end of the air heater is communicated with the outside, a hot air outlet end of the air heater is communicated with the hot air shunting bin, and the air heater can heat the outside air and then continuously send the heated air into the hot air shunting bin under the action of the air pump;

a plurality of heat flow inlet pipes are distributed between the hot air distribution box body and the inner fixed ring in a circumferential array manner, each heat flow inlet pipe extends along the radial direction of the inner fixed ring, the air inlet end of each heat flow inlet pipe is fixed on the hot air distribution box body and communicated with the hot air distribution bin, the air outlet end of each heat flow inlet pipe is integrally fixed on the inner fixed ring, and the outlet of the air outlet end of each heat flow inlet pipe is communicated with the position of the inner ring of the annular fertilizer particle dehydration channel; thereby leading a plurality of outlet ports to be uniformly distributed on the inner ring of the annular fertilizer granule dehydration channel in a circumferential array;

a plurality of hard exhaust pipes are distributed on the periphery of the outer fixed ring in a circumferential array radiating manner, and one ends of the exhaust pipes far away from the outer fixed ring are communicated with the outside; one end of each exhaust pipe close to the outer fixing ring is an air inlet end, the air inlet end of each exhaust pipe is integrally fixed on the outer fixing ring, and an inlet opening of the air inlet end of each exhaust pipe is communicated with the position of the outer ring of the annular fertilizer particle dehydration channel; thereby leading a plurality of leading-in ports to be evenly distributed on the outer ring of the annular fertilizer granule dehydration channel in a circumferential array.

Furthermore, a plurality of stir-frying blades are distributed in the fertilizer granule dehydration channel in a circumferential array manner; the stir-frying blade is of an arc slope-shaped metal sheet structure, the upper surface of the stir-frying blade is a concave particle climbing arc-shaped inclined plane, the lower end of the particle climbing arc-shaped inclined plane is tangent to the inner wall surface of the arc surface of the annular drying pan, the contour line of the lower end of the stir-frying blade is in sliding fit with the inner wall surface of the arc surface of the annular drying pan, the upper part of the particle climbing arc-shaped inclined plane of the stir-frying blade is hollowed with a plurality of rows of material leaking holes, and the hole width of each material leaking hole is larger than the diameter of fertilizer; the upper end of each stir-frying blade is fixedly connected to the ring body rotary pot cover;

under the overlooking state, the length direction of the stir-frying blade is parallel to the rotation linear speed direction of the stir-frying blade along the axis of the ring body rotating pot cover;

an annular surrounding table is integrally arranged on the outer contour edge of the upper side surface of the annular rotary pot cover along the contour, an annular disc body is horizontally and coaxially arranged on the upper surface of the annular rotary pot cover, and the annular disc body is coaxially arranged in the surrounding range of the annular surrounding table; the annular disc body synchronously rotates along with the rotary pot cover under the action of static friction force; a plurality of feed inlets are distributed on the ring body rotary pot cover in a circumferential array in a hollow manner, and each feed inlet is positioned between two adjacent stir-frying blades; a plurality of communicating holes corresponding to the feeding holes are distributed on the annular disc body in a circumferential array manner, the relative rotation of the annular disc body and the annular rotary pot cover can enable the plurality of feeding holes to be superposed and aligned with the plurality of communicating holes, the relative rotation of the annular disc body and the annular rotary pot cover can also enable the plurality of feeding holes and the plurality of communicating holes to be staggered with each other, and when the plurality of feeding holes and the plurality of communicating holes are staggered with each other, each feeding hole is blocked by the annular disc body;

the shell of the hot air diversion box body is fixedly supported and connected with at least three exhaust pipes through at least one connecting beam; the utility model discloses a ring body gyration pot cover, including support arm, connecting beam, motor support, output gear, ring-shaped enclosure platform, connecting beam, support arm, connecting beam, motor support, output gear, ring body gyration pot cover, the connecting beam pass through the support arm with the support column is fixed, be fixed with step motor through motor support on the support column, step motor's output is output gear, the upside that the platform was enclosed to the ring-shaped is a circumference array distribution and has a plurality of transmission tooth bodies, output gear and the meshing of a plurality of transmission tooth bodies on the.

Furthermore, a plurality of braking tooth bodies are distributed on the inner ring of the annular disc body in a circumferential array manner, a horizontal linear motor is fixedly mounted on the hot air diversion box body through a support, and a telescopic rod of the linear motor extends along the radial direction of the annular disc body; the end of the telescopic rod is fixedly connected with an embedded block, and the embedded block is embedded between two adjacent braking tooth bodies in the extending state of the telescopic rod, so that the annular plate body cannot rotate along with the ring body rotating pot cover.

Further, the drying method of the dehydration drying system for preparing the microbial compound fertilizer particles comprises the following steps:

firstly, the upper surface of an inner ring platform of an annular drying pot is upwards and hermetically attached to a first annular sealing gasket in an initial state, the upper surface of an outer ring platform of the annular drying pot is upwards and hermetically attached to a second annular sealing gasket, and at the moment, an annular fertilizer particle dehydration channel is formed inside a combined structure formed by an annular rotary pot cover and the annular drying pot; and the plurality of feed inlets are overlapped and aligned with the plurality of communicating holes in the initial state;

feeding a plurality of types of fertilizer granules waiting for dehydration and drying and waiting for uniform mixing to an annular fertilizer granule dehydration channel through a plurality of feed inlets respectively, and controlling the total volume of the annular fertilizer granule dehydration channel to ensure that the total volume of the granules entering the annular fertilizer granule dehydration channel is not more than one third of the volume of the fertilizer granule dehydration channel; so that the fertilizer granules entering the fertilizer granule dehydration channel to be mixed and dehydrated are distributed at the bottom of the annular fertilizer granule dehydration channel under the action of gravity;

step three, controlling a linear motor to enable a telescopic rod to extend outwards and enable an embedded block to be embedded between two adjacent braking tooth bodies, so that an annular plate body is rigidly braked and cannot rotate along with the annular body rotating pot cover, and then slowly controlling a stepping motor to enable the annular body rotating pot cover to slowly rotate under the meshing transmission of an output gear; then controlling the linear motor to enable the telescopic rod to gradually retract inwards and drive the embedded block to be separated from between two adjacent braking tooth bodies, so that the rigid braking state of the annular plate body is relieved, and the annular plate body is synchronous with the annular rotary pot cover under the action of static friction force;

step four, controlling a stepping motor to enable the ring body to rotate the pot cover under the meshing transmission of an output gear, wherein the ring body can rotate synchronously along with the ring body rotating pot cover under the action of static friction force; controlling the output of the stepping motor to make the annular body rotary pot cover perform periodic anticlockwise rotation, pause, anticlockwise rotation and pause … intermittent rotary motion, so that the plurality of stir-frying blades perform periodic anticlockwise rotation, pause, anticlockwise rotation and pause … intermittent rotary motion in the annular fertilizer particle dehydration channel, and when the plurality of stir-frying blades perform anticlockwise motion in the annular fertilizer particle dehydration channel, the lower ends of the stir-frying blades continuously shovel the fertilizer particles standing at the bottom of the fertilizer particle dehydration channel along the anticlockwise direction; according to the relative movement principle, the fertilizer granule unit which is equivalent to the standing of the bottom of the annular fertilizer granule dehydration channel makes clockwise movement in the annular fertilizer granule dehydration channel relative to the stir-frying blade, so that the fertilizer granules standing still at the bottom of the annular fertilizer granule dehydration channel continuously climb upwards along the fertilizer granules climbing arc-shaped inclined plane on the upper surface of the stir-frying blade under the action of inertia, when the fertilizer granules on the upper surface of the stir-frying blade climb upwards to the positions of a plurality of rows of material leaking holes on the upper part of the stir-frying blade, fertilizer particles rising to the upper part of the stir-frying blade can leak downwards through a plurality of rows of material leaking holes and fall back to the bottom of the annular fertilizer particle dehydration channel again, therefore, the fertilizer granules standing at the bottom of the annular fertilizer granule dehydration channel continuously lift and then fall again, and the billowing effect of the fertilizer granules in the annular fertilizer granule dehydration channel is realized; when the annular body rotary pot cover is suspended on the basis of anticlockwise rotation, the stir-frying blades are suspended, and the fertilizer particles which are moving upwards on the particle climbing arc-shaped inclined plane can be thrown forwards for a certain distance under the action of inertia and then fall down to the bottom of the annular fertilizer particle dehydration channel again; during the one-cycle movement of anticlockwise rotation and pause of the stir-frying blade: fertilizer particles thrown forwards from the particle climbing arc-shaped inclined plane and falling backwards are intersected with fertilizer particles downwards leaked from a plurality of rows of material leaking holes in the front stir-frying blade to form a uniform stirring effect; the comprehensive effect of the intermittent rotary motion of the plurality of stir-frying blades which continuously rotate anticlockwise, pause, rotate anticlockwise and pause … periodically in the fertilizer granule dehydration channel is as follows: enabling the fertilizer granules waiting for dehydration and mixing in the fertilizer granule dehydration channel to continuously rotate in the anticlockwise direction and continuously turn up and down for blending;

meanwhile, under the action of the air pump, the air heater heats the outside air and then continuously sends the heated air into the hot air diversion bin, the hot air in the hot air diversion bin is uniformly guided into the position of the inner ring of the fertilizer granule dehydration channel through a plurality of heat flow guide-in pipes, the hot air at the position of the inner ring of the fertilizer granule dehydration channel flows in the fertilizer granule dehydration channel in the divergence direction gradually far away from the axis of the fertilizer granule dehydration channel, and finally is discharged out of the outside in the divergence shape of a plurality of exhaust pipes at the position of the outer ring of the fertilizer granule dehydration channel, the hot air heats the fertilizer granules continuously surging and crossing in the fertilizer granule dehydration channel in the process of flowing in the divergence direction gradually far away from the axis of the fertilizer granule dehydration channel, and a moisture volatilization gap is generated between two adjacent granules in the process of surging, the contact area between the fertilizer granules and the air in the fertilizer granule dehydration channel is increased, so that hot air smoothly flows through gaps between the adjacent fertilizer granules, the volatilization of moisture on the fertilizer granules is promoted, and the effect of rapid dehydration is achieved; after a period of time, thoroughly dehydrating and uniformly mixing the fertilizer granules in the fertilizer granule dehydration channel; at this time, the stepping motor is suspended;

step five, the lifter of control riser stretches out downwards, make the downward displacement of cyclic annular drying pan, and then inner ring platform and outer loop platform downstream to separate with first cyclic annular seal gasket and second cyclic annular seal gasket, and let cyclic annular drying pan continue downward displacement to predetermined height with the horizontality, the fertilizer granule that has dehydrated and mixed at this moment follows in cyclic annular drying pan descends, then control brake formula motor, make first pivot drive cyclic annular drying pan along the axis gyration of first pivot at least 90, thereby change cyclic annular drying pan's gesture, cyclic annular drying pan's gesture changes the back, and the fertilizer granule that has dehydrated and mixed in the cyclic annular drying pan can be poured into dry mixed granule downwards under the action of gravity and connect the feed bin to store.

Has the advantages that: the fertilizer granule stirring device has a simple structure and has the functions of uniform mixing and mild dehydration, the fertilizer granules standing at the bottom of the annular fertilizer granule dehydration channel continuously climb upwards along the fertilizer granule climbing arc-shaped inclined plane of the upper surface of the stirring and frying blade obliquely under the action of inertia, and when the fertilizer granules climbing upwards at the upper surface of the stirring and frying blade obliquely reach the positions of a plurality of rows of material leaking holes at the upper part of the stirring and frying blade, the fertilizer granules climbing to the height of the upper part of the stirring and frying blade can leak downwards through the plurality of rows of material leaking holes and fall back to the bottom of the annular fertilizer granule dehydration channel again, so that the fertilizer granules standing at the bottom of the annular fertilizer granule dehydration channel continuously rise and then fall down again, and the stirring effect of the fertilizer granules in the annular fertilizer granule dehydration channel is realized; during the one-cycle movement of anticlockwise rotation and pause of the stir-frying blade: the fertilizer particles thrown forwards from the particle climbing arc-shaped inclined plane and falling backwards are intersected with the fertilizer particles downwards leaked from a plurality of rows of material leaking holes on the front stir-frying blade, so that the uniform stirring effect is formed.

Drawings

FIG. 1 is a schematic view of the overall structure of the device;

FIG. 2 is an overall cross-sectional view of the present apparatus;

FIG. 3 is a schematic view of the annular drying pan after moving downward on the basis of FIG. 1;

FIG. 4 is a schematic view of the annular drying pan with its posture changed based on FIG. 3;

FIG. 5 is a schematic structural view of a fertilizer granule mixing and drying apparatus;

FIG. 6 is a longitudinal cross-sectional view of FIG. 5;

FIG. 7 is a cross-sectional view of FIG. 5;

FIG. 8 is an exploded view of a fertilizer granule batch drying apparatus;

FIG. 9 is a schematic structural view of a ring-shaped revolving pot cover and a stir-frying blade fixedly connected below the same;

FIG. 10 is a schematic view showing the distribution and structure of stir-frying blades.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The dehydration drying system of compound fertilizer granule preparation of microorganism as shown in attached figures 1 to 10, including base platform 92, one side fixed mounting of base platform 92 has dry mixed granule to connect workbin 91, and dry mixed granule connects workbin 45 for the dry mixed granule of top open-ended in the workbin 91, dry mixed granule connects workbin 45 and is provided with fertilizer granule compounding drying device directly over, fertilizer granule compounding drying device can pour into dry mixed granule downwards and connect workbin 45 with the mixed fertilizer granule after compounding and dry dehydration.

Base platform 92, fixed mounting has vertical support column 46 on the base platform 92, the upper end of support column 46 is fixed with crossbeam 47, fertilizer granule compounding drying device installs the downside of crossbeam 47.

The fertilizer particle mixing and drying device comprises a pair of vertical lifters 37, the upper ends of the lifters 37 are fixed on the cross beam 47, the lower ends of the lifting rods 38 of the two lifters 37 are connected with a horizontal lifting beam 33, the fertilizer particle mixing and drying device further comprises two cantilever beams 1 arranged in parallel at intervals, the roots of the two cantilever beams 1 are fixedly connected to the two ends of the lifting beam 33 respectively, and therefore the two cantilever beams 1 are lifted synchronously along with the lifting beam 33; a horizontal annular drying pot 16 is arranged between the two cantilever beams 1, and the section of the ring body of the annular drying pot 16 is semicircular with an upward opening; the two ends of the outer wall of the annular drying pan 16 are fixedly connected with a first rotating shaft 29 and a second rotating shaft 15 coaxially, and the axes of the first rotating shaft 29 and the second rotating shaft 15 are vertically intersected with the axis of the annular drying pan 16; the tail ends of the two cantilever beams 1 are respectively provided with a first bearing hole 30 and a second bearing hole 13, the first rotating shaft 29 and the second rotating shaft 15 are respectively in running fit with the first bearing hole 30 and the second bearing hole 13 through bearings, the cantilever beams 1 are fixedly provided with a brake type motor 31 through a motor support 32, the output end of the brake type motor 31 is in driving connection with the first rotating shaft 29, the rotary energy of the first rotating shaft 29 drives the annular drying pan 16 to rotate along the axis of the first rotating shaft 29, and therefore the posture of the annular drying pan 16 is changed.

The upper end outer ring of the annular drying pan 16 is integrally provided with an outer ring platform 7 along the outline, the lower end inner ring of the annular drying pan 16 is integrally provided with an inner ring platform 61 along the outline, the annular drying pan further comprises an inner fixed ring 3 and an outer fixed ring 12 which are fixedly installed, and the lower surfaces of the inner fixed ring 3 and the outer fixed ring 12 are fixedly connected with a first annular sealing gasket 2 and a second annular sealing gasket 5 respectively; the upper surface of the inner ring platform 61 of the annular drying pan 16 is upwards sealed and attached to the first annular sealing gasket 2, the upper surface of the outer ring platform 7 of the annular drying pan 16 is upwards sealed and attached to the second annular sealing gasket 5, and the downward displacement of the annular drying pan 16 enables the inner ring platform 61 and the outer ring platform 7 to move downwards to be separated from the first annular sealing gasket 2 and the second annular sealing gasket 5.

The fertilizer drying device also comprises a horizontal annular ring body rotary pot cover 4, wherein the inner edge and the outer edge of the lower side of the ring body rotary pot cover 4 are respectively in running fit with the inner fixed ring 3 and the outer fixed ring 12 through a first sealing bearing 21 and a second sealing bearing 10, and an annular fertilizer particle dewatering channel 17 is formed inside a combined structure formed by the ring body rotary pot cover 4 and the annular drying pot 16;

a hot air diversion box body 27 is coaxially arranged at the axis of the inner fixed ring 3, and a hot air diversion bin 25 is arranged in the hot air diversion box body 27; the air heater 24 is further included, an air inlet end 23 of the air heater 24 is communicated with the outside, a hot air outlet end 22 of the air heater 24 is communicated with the hot air diversion bin 25, and under the action of the air pump, the air heater 24 can heat the outside air and then continuously send the heated air into the hot air diversion bin 25;

a plurality of heat flow inlet pipes 20 are circumferentially distributed between the hot air distribution box body 27 and the inner fixed ring 3 in an array manner, each heat flow inlet pipe 20 extends along the radial direction of the inner fixed ring 3, the air inlet end of each heat flow inlet pipe 20 is fixed on the hot air distribution box body 27 and communicated with the hot air distribution bin 25, the air outlet end of each heat flow inlet pipe 20 is integrally fixed on the inner fixed ring 3, and the outlet 44 of the air outlet end of each heat flow inlet pipe 20 is communicated with the position of the inner ring of the annular fertilizer granule dehydration channel 17; so that the plurality of outlet ports 44 are uniformly distributed in a circumferential array on the inner ring of the annular fertilizer granule dewatering channel 17;

a plurality of hard exhaust pipes 11 are distributed on the periphery of the outer fixed ring 12 in a circumferential array divergence manner, and one ends of the exhaust pipes 11 far away from the outer fixed ring 12 are communicated with the outside; one end of each exhaust pipe 11 close to the outer fixing ring 12 is an air inlet end, the air inlet end of each exhaust pipe 11 is integrally fixed on the outer fixing ring 12, and an inlet 43 of the air inlet end of each exhaust pipe 11 is communicated with the position of the outer ring of the annular fertilizer particle dehydration channel 17; thereby a plurality of the introducing ports 43 are evenly distributed in a circumferential array on the outer ring of the annular fertilizer granule dewatering channel 17.

A plurality of stir-frying blades 26 are distributed in the fertilizer granule dehydration channel 17 in a circumferential array manner; the stir-frying blade 26 is of an arc slope-shaped metal sheet structure, the upper surface of the stir-frying blade 26 is a concave particle climbing arc-shaped inclined plane 26.1, the lower end of the particle climbing arc-shaped inclined plane 26.1 is tangent to the inner wall surface of the arc surface of the annular drying pan 16, the lower end contour line 28 of the stir-frying blade 26 is in sliding fit with the inner wall of the arc surface of the annular drying pan 16, the upper part of the particle climbing arc-shaped inclined plane 26.1 of the stir-frying blade 26 is provided with a plurality of rows of material leaking holes 36 in a hollow manner, and the hole width of the material leaking holes 36 is larger than the diameter of; the upper ends of the stir-frying blades 26 are fixedly connected to the ring body rotary pot cover 4;

in a overlooking state, the length direction of the stir-frying blade 26 is parallel to the linear velocity direction 0 of the stir-frying blade rotating along the axis of the ring body rotating pot cover 4;

an annular enclosing table 9 is integrally arranged on the outer contour edge of the upper side surface of the annular rotary pot cover 4 along the contour, an annular disc body 6 is horizontally and coaxially arranged on the upper surface of the annular rotary pot cover 4, and the annular disc body 6 is coaxially arranged in the enclosing range of the annular enclosing table 9; under the action of static friction force, the annular disc body 6 synchronously rotates along with the rotary pot cover 4; a plurality of feed inlets 35 are distributed on the ring body rotary pot cover 4 in a circumferential array in a hollow manner, and each feed inlet 35 is positioned between two adjacent stir-frying blades 26; a plurality of communicating holes 34 corresponding to the feed ports 35 are circumferentially distributed on the annular tray body 6 in an array manner, the relative rotation of the annular tray body 6 and the annular rotary pot cover 4 can enable the plurality of feed ports 35 to be superposed and aligned with the plurality of communicating holes 34, the relative rotation of the annular tray body 6 and the annular rotary pot cover 4 can also enable the plurality of feed ports 35 and the plurality of communicating holes 34 to be staggered with each other, and when the plurality of feed ports 35 and the plurality of communicating holes 34 are staggered with each other, each feed port 35 is blocked by the annular tray body 6;

the shell of the hot air diversion box body 27 is fixedly supported and connected with at least three exhaust pipes 11 through at least one connecting beam 8; the utility model discloses a revolving pot cover, including support column 46, tie-beam 8, motor support 49, output gear 50, cyclic annular enclose the upside of platform 9 and be a plurality of transmission tooth bodies 18, output gear 50 and a plurality of transmission tooth bodies 18 on the revolving pot cover 4, the tie-beam 8 pass through support arm 51 with support column 46 is fixed, be fixed with step motor 48 through motor support 49 on the support column 46, step motor 48's output is output gear 50, the cyclic annular encloses the upside of platform 9 and is the circumference array distribution and have a plurality of transmission tooth bodies 18, output gear 50 and the meshing of a plurality of transmission tooth bodies 18.

A plurality of braking tooth bodies 19 are distributed on the inner ring of the annular disc body 6 in a circumferential array manner, a horizontal linear motor 39 is fixedly mounted on the hot air diversion box body 27 through a support, and a telescopic rod 40 of the linear motor 39 extends along the radial direction of the annular disc body 6; the tail end of the telescopic rod 40 is fixedly connected with an embedded block 41, and under the state that the telescopic rod 40 extends out, the embedded block 41 is embedded between two adjacent braking tooth bodies 19, so that the annular disc body 6 cannot rotate along with the annular rotary pot cover 4.

The method, the working principle and the technical progress of the scheme, and the working process are organized as follows:

the drying method of the dehydration drying system for preparing the microbial compound fertilizer particles comprises the following steps:

firstly, the upper surface of an inner ring platform 61 of an annular drying pot 16 is upwards and hermetically attached to a first annular sealing gasket 2 in an initial state, the upper surface of an outer ring platform 7 of the annular drying pot 16 is upwards and hermetically attached to a second annular sealing gasket 5, and at this time, an annular fertilizer particle dehydration channel 17 is formed inside a combined structure formed by a ring rotary pot cover 4 and the annular drying pot 16; and the feed inlets 35 are overlapped and aligned with the communicating holes 34 in the initial state;

step two, respectively feeding a plurality of types of fertilizer granules waiting for dehydration and drying and waiting for uniform mixing to an annular fertilizer granule dehydration channel 17 through a plurality of feed inlets 35, and controlling the total volume of the annular fertilizer granule dehydration channel 17 to ensure that the total volume of the granules of the annular fertilizer granule dehydration channel 17 does not exceed one third of the volume of the fertilizer granule dehydration channel 17; so that the fertilizer granules entering the fertilizer granule dewatering channel 17 waiting for mixing and dewatering are distributed at the bottom position of the annular fertilizer granule dewatering channel 17 under the action of gravity;

step three, controlling a linear motor 39 to extend an expansion link 40 outwards to enable an embedded block 41 to be embedded between two adjacent braking tooth bodies 19, so that the annular plate body 6 is rigidly braked and cannot rotate along with the annular rotary pot cover 4, and then slowly controlling a stepping motor 48 to enable the annular rotary pot cover 4 to slowly rotate under the meshing transmission of an output gear 50, so that the annular plate body 6 is braked, the annular plate body 6 and the annular rotary pot cover 4 mutually overcome the maximum static friction force to relatively rotate until a plurality of feed ports 35 are mutually staggered with a plurality of communicating holes 34, and each feed port 35 is blocked by the annular plate body 6; then controlling the linear motor 39 to enable the telescopic rod 40 to gradually retract inwards and drive the embedded block 41 to be separated from the space between two adjacent braking tooth bodies 19, so that the rigid braking state of the annular disc body 6 is relieved, and the annular disc body 6 is synchronous with the annular body rotating pot cover 4 under the action of static friction force;

step four, controlling a stepping motor 48 to enable the ring body rotating pot cover 4 to rotate under the meshing transmission of an output gear 50, wherein the ring-shaped disc body 6 can synchronously rotate along with the ring body rotating pot cover 4 under the action of static friction force; at this time, the output of the stepping motor 48 is controlled, so that the ring body rotating pot cover 4 performs periodic counterclockwise rotation, pause, counterclockwise rotation and pause … intermittent rotary motion, so that the plurality of stir-frying blades 26 perform periodic counterclockwise rotation, pause, counterclockwise rotation and pause … intermittent rotary motion in the annular fertilizer particle dehydration channel 17, and when the plurality of stir-frying blades 26 perform counterclockwise motion in the annular fertilizer particle dehydration channel 17, the lower ends of the stir-frying blades 26 continuously scoop the fertilizer particles standing at the bottom of the fertilizer particle dehydration channel 17 in the counterclockwise direction; according to the principle of relative movement, the fertilizer granule unit 42 standing still at the bottom of the annular fertilizer granule dewatering channel 17 makes clockwise movement in the annular fertilizer granule dewatering channel 17 relative to the stir-frying blade 26, so that the fertilizer granules 42 standing still at the bottom of the annular fertilizer granule dewatering channel 17 continuously climb upwards along the fertilizer granules climbing arc-shaped inclined surface 26.1 on the upper surface of the stir-frying blade 26 under the action of inertia, when the fertilizer granules on the upper surface of the stir-frying blade 26 climb upwards to the positions of the rows of the material leaking holes 36 on the upper part of the stir-frying blade 26, the fertilizer granules climbing to the height of the upper part of the stir-frying blade 26 will leak downwards through the rows of the material leaking holes 36 and fall back to the bottom of the annular fertilizer granule dewatering channel 17, thereby ensuring the effect that the fertilizer granules standing still at the bottom of the annular fertilizer granule dewatering channel 17 fall again after being continuously lifted, thereby realizing the billowing effect of the fertilizer granules in the annular fertilizer granule dewatering channel 17; when the ring body rotary pot cover 4 is suspended on the basis of anticlockwise rotation, the stir-frying blades 26 are suspended, and the fertilizer particles which are moving upwards on the particle climbing arc-shaped inclined plane 26.1 can be thrown forwards for a certain distance under the action of inertia and then fall down to the bottom of the annular fertilizer particle dehydration channel 17 again; the stir-fry blades 26 in one cycle of counterclockwise rotation, pause: fertilizer particles thrown forwards from the particle climbing arc-shaped inclined plane 26.1 and falling backwards are intersected with the fertilizer particles leaked downwards from the rows of material leaking holes 36 on the front stir-frying blade 26 to form a uniform stirring effect; the combined effect of the intermittent rotary motion of the plurality of stir-frying blades 26 in the fertilizer granule dewatering channel 17 in the periodic anticlockwise rotation, pause, anticlockwise rotation and pause … is as follows: the fertilizer granules waiting for dehydration and mixing in the fertilizer granule dehydration channel 17 continuously rotate along the counterclockwise direction and continuously turn up and down for blending;

meanwhile, under the action of the air pump, the air heater 24 heats the outside air and then continuously feeds the heated air into the hot air diversion bin 25, the hot air in the hot air diversion bin 25 is uniformly guided into the position of the inner ring of the fertilizer granule dehydration channel 17 through the heat flow inlet pipes 20, the hot air at the position of the inner ring of the fertilizer granule dehydration channel 17 flows in the fertilizer granule dehydration channel 17 in the divergence direction gradually far away from the axis of the fertilizer granule dehydration channel 17, and finally is discharged out of the outside in the divergence shape through the exhaust pipes 11 at the position of the outer ring of the fertilizer granule dehydration channel 17, the hot air heats the continuously surging and converging fertilizer granules in the fertilizer granule dehydration channel 17 in the process of flowing in the divergence direction gradually far away from the axis of the fertilizer granule dehydration channel 17 in the fertilizer granule dehydration channel 17, and a moisture volatilization gap is generated between two adjacent granules in the process of surging, the contact area between the fertilizer granules and the air in the fertilizer granule dehydration channel 17 is increased, so that hot air smoothly flows through the gaps between the adjacent fertilizer granules, the volatilization of moisture on the fertilizer granules is promoted, and the effect of rapid dehydration is achieved; after a period of time, the fertilizer granules in the fertilizer granule dehydration channel 17 are thoroughly dehydrated and mixed; at this point, the stepper motor 48 is halted;

step five, the lifting rod 38 of the lifter 37 is controlled to extend downwards to enable the annular drying pan 16 to move downwards, then the inner annular table 61 and the outer annular table 7 move downwards to be separated from the first annular sealing gasket 2 and the second annular sealing gasket 5, (as shown in fig. 3), the annular drying pan 16 continues to move downwards to a preset height in a horizontal state, at this time, the dehydrated and uniformly mixed fertilizer particles descend in the annular drying pan 16, then the brake motor 31 is controlled to enable the first rotating shaft 29 to drive the annular drying pan 16 to rotate for at least 90 degrees along the axis of the first rotating shaft 29 (as shown in fig. 4), so that the posture of the annular drying pan 16 is changed, and the dehydrated and uniformly mixed fertilizer particles in the annular drying pan 16 can be poured downwards into the dry mixed particle receiving bin 45 to be stored under the action of gravity after the posture of the annular drying pan 16 is changed.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. The dehydration drying system for preparing the microbial compound fertilizer particles is characterized in that: including base platform (92), one side fixed mounting of base platform (92) has dry mixed granule to connect workbin (91), and dry mixed granule connects feed bin (45) for top open-ended dry mixed granule in connecing workbin (91), dry mixed granule connects feed bin (45) to be provided with fertilizer granule compounding drying device directly over, fertilizer granule compounding drying device can connect feed bin (45) with the dry mixed granule of pouring into downwards the mixed fertilizer granule after compounding and the dry dehydration.

2. The dewatering and drying system for microbial compound fertilizer granule production as claimed in claim 1, wherein: base platform (92), fixed mounting has vertical support column (46) on base platform (92), the upper end of support post (46) is fixed with crossbeam (47), fertilizer granule compounding drying device installs the downside of crossbeam (47).

3. The dewatering and drying system for microbial compound fertilizer granule production as claimed in claim 2, wherein: the fertilizer particle mixing and drying device comprises a pair of vertical lifters (37), the upper ends of the lifters (37) are fixed on the cross beam (47), the lower ends of lifting rods (38) of the two lifters (37) are connected with a horizontal lifting beam (33) together, the fertilizer particle mixing and drying device further comprises two cantilever beams (1) which are arranged in parallel at intervals, and the roots of the two cantilever beams (1) are fixedly connected to the two ends of the lifting beam (33) respectively, so that the two cantilever beams (1) can be lifted synchronously along with the lifting beam (33); a horizontal annular drying pot (16) is arranged between the two cantilever beams (1), and the section of a ring body of the annular drying pot (16) is semicircular with an upward opening; the two ends of the outer wall of the annular drying pot (16) are fixedly connected with a first rotating shaft (29) and a second rotating shaft (15) coaxially respectively, and the axes of the first rotating shaft (29) and the second rotating shaft (15) are vertically intersected with the axis of the annular drying pot (16); the end of two cantilever beams (1) is provided with first bearing hole (30) and second bearing hole (13) respectively, first pivot (29) and second pivot (15) through the bearing respectively with first bearing hole (30) and second bearing hole (13) normal running fit, cantilever beam (1) have fixed mounting through motor support (32) brake formula motor (31), first pivot (29) are connected in the output drive of brake formula motor (31), the gyration energy of first pivot (29) drives cyclic annular drying pan (16) are followed the axis gyration of first pivot (29), thereby change the gesture of cyclic annular drying pan (16).

4. The dewatering and drying system for microbial compound fertilizer granule production as claimed in claim 3, wherein: the upper end outer ring of the annular drying pot (16) is integrally provided with an outer ring platform (7) along the outline, the lower end inner ring of the annular drying pot (16) is integrally provided with an inner ring platform (61) along the outline, the annular drying pot further comprises an inner fixed ring (3) and an outer fixed ring (12) which are fixedly installed, and the lower surfaces of the inner fixed ring (3) and the outer fixed ring (12) are respectively and fixedly connected with a first annular sealing gasket (2) and a second annular sealing gasket (5); the upper surface of an inner ring platform (61) of the annular drying pot (16) is upwards sealed and attached to a first annular sealing gasket (2), the upper surface of an outer ring platform (7) of the annular drying pot (16) is upwards sealed and attached to a second annular sealing gasket (5), and the downward displacement of the annular drying pot (16) enables the inner ring platform (61) and the outer ring platform (7) to move downwards to be separated from the first annular sealing gasket (2) and the second annular sealing gasket (5).

5. The dewatering and drying system for microbial compound fertilizer granule production as claimed in claim 4, wherein: the fertilizer drying device is characterized by further comprising a horizontal annular rotary pot cover (4), wherein the inner edge and the outer edge of the lower side of the annular rotary pot cover (4) are respectively in running fit with the inner fixed ring (3) and the outer fixed ring (12) through a first sealing bearing (21) and a second sealing bearing (10), and an annular fertilizer particle dewatering channel (17) is formed inside a combined structure formed by the annular rotary pot cover (4) and the annular drying pot (16);

a hot air shunting box body (27) is coaxially arranged at the axis of the inner fixing ring (3), and a hot air shunting bin (25) is arranged in the hot air shunting box body (27); the air-conditioning system is characterized by further comprising an air heater (24), wherein an air inlet end (23) of the air heater (24) is communicated with the outside, a hot air outlet end (22) of the air heater (24) is communicated with the hot air shunting bin (25), and under the action of an air pump, the air heater (24) can heat the outside air and then continuously send the heated air into the hot air shunting bin (25);

a plurality of heat flow inlet pipes (20) are distributed between the hot air distribution box body (27) and the inner fixed ring (3) in a circumferential array manner, each heat flow inlet pipe (20) extends along the radial direction of the inner fixed ring (3), the air inlet end of each heat flow inlet pipe (20) is fixed on the hot air distribution box body (27) and communicated with the hot air distribution bin (25), the air outlet end of each heat flow inlet pipe (20) is integrally fixed on the inner fixed ring (3), and the outlet (44) of the air outlet end of each heat flow inlet pipe (20) is communicated with the position of the inner ring of the annular fertilizer particle dehydration channel (17); thereby leading a plurality of outlet ports (44) to be uniformly distributed on the inner ring of the annular fertilizer granule dehydration channel (17) in a circumferential array;

a plurality of hard exhaust pipes (11) are distributed on the periphery of the outer fixed ring (12) in a circumferential array radiating manner, and one ends of the exhaust pipes (11) far away from the outer fixed ring (12) are communicated with the outside; one end of each exhaust pipe (11) close to the outer fixing ring (12) is an air inlet end, the air inlet ends of the exhaust pipes (11) are integrally fixed on the outer fixing ring (12), and an inlet (43) of the air inlet end of each exhaust pipe (11) is communicated with the position of the outer ring of the annular fertilizer particle dehydration channel (17); thereby leading a plurality of leading-in ports (43) to be uniformly distributed on the outer ring of the annular fertilizer granule dewatering channel (17) in a circumferential array.

6. The dewatering and drying system for microbial compound fertilizer granule production as claimed in claim 5, wherein: a plurality of stir-frying blades (26) are distributed in the fertilizer granule dehydration channel (17) in a circumferential array; the stir-frying blade (26) is of an arc-shaped slope-shaped metal sheet structure, the upper surface of the stir-frying blade (26) is a concave particle climbing arc-shaped inclined plane (26.1), the lower end of the particle climbing arc-shaped inclined plane (26.1) is tangent to the inner wall surface of the arc surface of the annular drying pot (16), the lower end contour line (28) of the stir-frying blade (26) is in sliding fit with the inner wall of the arc surface of the annular drying pot (16), the upper part of the particle climbing arc-shaped inclined plane (26.1) of the stir-frying blade (26) is provided with a plurality of rows of material leaking holes (36) in a hollow manner, and the hole width of each material leaking hole (36) is larger than the diameter; the upper end of each stir-frying blade (26) is fixedly connected to the ring body rotary pot cover (4);

in a overlooking state, the length direction of the stir-frying blade (26) is parallel to the linear velocity direction (0) of the stir-frying blade rotating along the axis of the ring body rotating pot cover (4);

an annular surrounding table (9) is integrally arranged on the outer contour edge of the upper side surface of the annular rotary pot cover (4) along the contour, an annular disc body (6) is horizontally and coaxially arranged on the upper surface of the annular rotary pot cover (4), and the annular disc body (6) is coaxially arranged in the surrounding range of the annular surrounding table (9); under the action of static friction force, the annular disc body (6) synchronously rotates along with the rotary pot cover (4); a plurality of feed inlets (35) are distributed on the annular rotary pot cover (4) in a circumferential array in a hollow manner, and each feed inlet (35) is positioned between two adjacent stir-frying blades (26); a plurality of communicating holes (34) corresponding to the feed inlets (35) are distributed on the annular disc body (6) in a circumferential array manner, the relative rotation of the annular disc body (6) and the annular rotary pot cover (4) can enable the plurality of feed inlets (35) to be superposed and aligned with the plurality of communicating holes (34), the relative rotation of the annular disc body (6) and the annular rotary pot cover (4) can enable the plurality of feed inlets (35) and the plurality of communicating holes (34) to be staggered with each other, and when the plurality of feed inlets (35) and the plurality of communicating holes (34) are staggered with each other, each feed inlet (35) is plugged by the annular disc body (6);

the shell of the hot air diversion box body (27) is fixedly supported and connected with at least three exhaust pipes (11) through at least one connecting beam (8); the utility model discloses a ring body gyration pot cover, including support column (46), tie-beam (8), support column (46), stepping motor (48), output gear (50), the upside that cyclic annular encloses platform (9) is that the circumference array distributes and has a plurality of transmission tooth bodies (18), output gear (50) and a plurality of transmission tooth bodies (18) meshing on ring body gyration pot cover (4), the gyration of output gear (50) can drive under the meshing drive effect ring body gyration pot cover (4) are along the axis gyration.

7. The dewatering and drying system for microbial compound fertilizer granule production as claimed in claim 6, wherein: a plurality of braking tooth bodies (19) are distributed on the inner ring of the annular disc body (6) in a circumferential array manner, a horizontal linear motor (39) is fixedly mounted on the hot air diversion box body (27) through a support, and a telescopic rod (40) of the linear motor (39) extends along the radial direction of the annular disc body (6); the terminal fixedly connected with abaculus (41) of telescopic link (40), under the state that telescopic link (40) stretched out, abaculus (41) embedding between two adjacent braking tooth bodies (19) to make cyclic annular disk body (6) can't follow ring body gyration pot lid (4) and revolve.

8. The drying method of the dewatering and drying system for microbial compound fertilizer granule preparation according to claim 7, characterized in that: the method comprises the following steps:

firstly, the upper surface of an inner ring platform (61) of an annular drying pot (16) is upwards and hermetically attached to a first annular sealing gasket (2) in an initial state, the upper surface of an outer ring platform (7) of the annular drying pot (16) is upwards and hermetically attached to a second annular sealing gasket (5), and at the moment, an annular fertilizer particle dehydration channel (17) is formed inside a combined structure formed by an annular rotary pot cover (4) and the annular drying pot (16); and the feed inlets (35) are overlapped and aligned with the communicating holes (34) in the initial state;

secondly, a plurality of types of fertilizer granules waiting for dehydration and drying and waiting for uniform mixing are respectively fed into an annular fertilizer granule dehydration channel (17) through a plurality of feed inlets (35), and the total volume of the annular fertilizer granule dehydration channel (17) is controlled, so that the total volume of the granules entering the annular fertilizer granule dehydration channel (17) is not more than one third of the volume of the fertilizer granule dehydration channel (17); so that the fertilizer granules entering the fertilizer granule dewatering channel (17) to be mixed and dewatered are distributed at the bottom position of the annular fertilizer granule dewatering channel (17) under the action of gravity;

step three, controlling a linear motor (39) to enable an expansion link (40) to extend outwards and enable an embedded block (41) to be embedded between two adjacent braking tooth bodies (19), so that an annular disc body (6) is rigidly braked and cannot rotate along with the annular rotary pot cover (4), slowly controlling a stepping motor (48), enabling the annular rotary pot cover (4) to slowly rotate under the meshing transmission of an output gear (50), and enabling the annular disc body (6) and the annular rotary pot cover (4) to mutually overcome the maximum static friction force to relatively rotate until a plurality of feed ports (35) and a plurality of communicating holes (34) are mutually staggered due to the fact that the annular disc body (6) is braked, so that each feed port (35) is blocked by the annular disc body (6); then controlling a linear motor (39) to enable an expansion rod (40) to gradually retract inwards and drive an embedded block (41) to be separated from between two adjacent braking tooth bodies (19), so that the rigid braking state of the annular disc body (6) is relieved, and the annular disc body (6) is synchronous with the annular rotary pot cover (4) under the action of static friction force;

step four, controlling a stepping motor (48) to enable the ring body rotary pot cover (4) to rotate under the meshing transmission of an output gear (50), wherein the ring-shaped disc body (6) can synchronously rotate along with the ring body rotary pot cover (4) under the action of static friction force; at the moment, the output of the stepping motor (48) is controlled, so that the ring body rotary pot cover (4) performs periodic anticlockwise rotation, pause, anticlockwise rotation and pause … intermittent rotary motion, and therefore the plurality of stir-frying blades (26) perform periodic anticlockwise rotation, pause, anticlockwise rotation and pause … intermittent rotary motion in the annular fertilizer particle dehydration channel (17), and when the plurality of stir-frying blades (26) perform anticlockwise motion in the annular fertilizer particle dehydration channel (17), the lower ends of the stir-frying blades (26) continuously scoop the fertilizer particles standing at the bottom of the fertilizer particle dehydration channel (17) along the anticlockwise direction; according to the relative movement principle, the fertilizer granule unit (42) which is equivalent to the bottom of the annular fertilizer granule dewatering channel (17) and stands still moves clockwise in the annular fertilizer granule dewatering channel (17) relative to the stir-frying blade (26), so that the fertilizer granules (42) which stand still at the bottom of the annular fertilizer granule dewatering channel (17) continuously climb upwards along the fertilizer granule climbing arc-shaped inclined plane (26.1) on the upper surface of the stir-frying blade (26) under the inertia effect, when the fertilizer granules on the upper surface of the stir-frying blade (26) climb upwards obliquely to the positions of a plurality of rows of material leaking holes (36) on the upper part of the stir-frying blade (26), the fertilizer granules which climb to the upper part of the stir-frying blade (26) at the height can leak downwards through the plurality of rows of material leaking holes (36) and fall back to the bottom of the annular fertilizer granule dewatering channel (17), and the fertilizer granules which stand still at the bottom of the annular fertilizer granule dewatering channel (17) are lifted continuously and then return to the bottom of the annular fertilizer granule dewatering channel (17) again The effect of falling again is achieved, so that the effect of billowing of the fertilizer particles in the annular fertilizer particle dewatering channel (17) is achieved; when the annular body rotary pot cover (4) is suspended on the basis of anticlockwise rotation, the stir-frying blades (26) are suspended, and the fertilizer particles which are moving upwards on the particle climbing arc-shaped inclined plane (26.1) can be thrown out forwards for a distance under the action of inertia and then fall down to the bottom of the annular fertilizer particle dewatering channel (17); the stir-frying blade (26) rotates anticlockwise and pauses in a periodic motion: fertilizer particles thrown forwards and downwards from the particle climbing arc-shaped inclined plane (26.1) are intersected with fertilizer particles leaked downwards from a plurality of rows of material leaking holes (36) on the front stir-frying blade (26) to form a uniform stirring effect; the comprehensive effect of the intermittent rotary motion of the plurality of stir-frying blades (26) which continuously rotate anticlockwise, pause, rotate anticlockwise and pause … periodically in the fertilizer granule dewatering channel (17) is as follows: enabling the fertilizer granules waiting for dehydration and mixing in the fertilizer granule dehydration channel (17) to continuously rotate in the anticlockwise direction and continuously turn up and down for blending;

meanwhile, under the action of an air pump, the air heater (24) heats the outside air and then continuously sends the heated air into the hot air diversion bin (25), the hot air in the hot air diversion bin (25) is uniformly guided into the position of the inner ring of the fertilizer granule dehydration channel (17) through the plurality of heat flow guide-in pipes (20), the hot air at the position of the inner ring of the fertilizer granule dehydration channel (17) flows in the fertilizer granule dehydration channel (17) in the divergence direction gradually far away from the axis of the fertilizer granule dehydration channel (17), and finally the hot air is divergently discharged outside at the position of the outer ring of the fertilizer granule dehydration channel (17) through the plurality of exhaust pipes (11), the hot air can heat the particles which continuously turn over and swell and intersect in the fertilizer granule dehydration channel (17) in the process of the divergence direction flow of the hot air gradually far away from the axis of the fertilizer granule dehydration channel (17) in the fertilizer granule dehydration channel (17), moisture volatilization gaps can be generated between two adjacent particles in the process of turning over and surging, and the contact area between the fertilizer particles and air in the fertilizer particle dehydration channel (17) is increased, so that hot air can smoothly flow through the gaps between the adjacent fertilizer particles, the moisture volatilization on the fertilizer particles is promoted, and the effect of rapid dehydration is achieved; after a period of time, the fertilizer particles in the fertilizer particle dehydration channel (17) are thoroughly dehydrated and uniformly mixed; at this time, the stepping motor (48) is halted;

step five, controlling a lifting rod (38) of a lifter (37) to extend downwards to enable the annular drying pan (16) to displace downwards, then the inner ring platform (61) and the outer ring platform (7) move downwards to be separated from the first annular sealing gasket (2) and the second annular sealing gasket (5), and the annular drying pan (16) is continuously displaced downwards to a preset height in a horizontal state, and then the dehydrated and uniformly mixed fertilizer particles descend in the annular drying pan (16), then the brake type motor (31) is controlled to lead the first rotating shaft (29) to drive the annular drying pan (16) to rotate for at least 90 degrees along the axis of the first rotating shaft (29), thereby changing the posture of the annular drying pan (16), after the posture of the annular drying pan (16) is changed, the dehydrated and uniformly mixed fertilizer particles in the annular drying pan (16) can be poured downwards into a dry mixed particle receiving bin (45) under the action of gravity for storage.