CN113587595A

CN113587595A - A energy-saving stoving cooling device for compound fertilizer granule processing

Info

Publication number: CN113587595A
Application number: CN202110873485.5A
Authority: CN
Inventors: 史燕飞
Original assignee: Jiangsu Hengkang Fertilizer Industry Co ltd
Current assignee: Jiangsu Hengkang Fertilizer Industry Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-11-02

Abstract

The invention is suitable for the technical field of fertilizer production, and provides an energy-saving drying and cooling device for processing compound fertilizer particles, which comprises a drying cylinder and a cooling cylinder, wherein a cavity is arranged in the wall of the drying cylinder, the inner cavity of the cooling cylinder is communicated with the cavity, a drying component is arranged in the drying cylinder, the drying component comprises a hollow shaft, a spiral screen plate, an end screen plate and a hot air blower, a cooling component is arranged in the cooling cylinder, the cooling component comprises an installation sleeve, a waveform screen plate and a blower, a drying unit and a cooling unit are arranged, hot air in the cooling cylinder is led into the cavity to dry the fertilizer in the drying cylinder, the waste of heat is avoided, the energy-saving and environment-friendly effects are achieved, the fertilizer moves along the track of the spiral screen plate, is fully dispersed and uniformly and fully contacted with hot air, the drying efficiency is improved, the cooling component is arranged, the fertilizer moves along the waveform screen plate, the moving speed is changed, the motion track changes, fully contacts with cold wind, helps giving off of thermal, and the cooling effect is better.

Description

A energy-saving stoving cooling device for compound fertilizer granule processing

Technical Field

The invention belongs to the technical field of fertilizer production, and particularly relates to an energy-saving drying and cooling device for processing compound fertilizer granules.

Background

The compound fertilizer is a chemical fertilizer containing any two or three of crop nutrient elements of nitrogen, phosphorus and potassium, which is prepared by a chemical method or (and) a mixing method, is widely used in modern agriculture, and in the production process flow of the compound fertilizer, drying is needed to increase the strength of compound fertilizer particles, so that the compound fertilizer particles are convenient to store, and the compound fertilizer particles are cooled to the temperature which is too high for the dried compound fertilizer particles, are easy to agglomerate, and are convenient to package, store and transport after being cooled.

For example, the chinese utility model patent CN211147169U discloses a drying and cooling device for compound fertilizer granules, which provides high-pressure air flow to a vortex tube through an air pump, so that the vortex tube operates to generate hot air and cold air, and the hot air and the cold air generated by the vortex tube are respectively delivered to a drying and stirring barrel and a cooling and stirring barrel, so that two different processing technologies of drying compound fertilizer granules and cooling granules are completed through one machine, thereby meeting the development of advanced manufacturing industry at the present stage, reducing the operation cost of enterprises, and being suitable for large-area popularization and use;

as the chinese utility model patent CN207688508U discloses a drying and cooling device for biomass pellet fuel, by arranging a blower, a heater and a uniform feeding cylinder, the pellet fuel is put into the uniform feeding cylinder, the main motor is used to drive the rotation cylinder to rotate, so as to achieve the purpose of uniform feeding and non-clogging, the air generated by the blower is heated by the heater, and is transmitted into the machine body to be heated, and the auxiliary motor is used to drive the stirring blades to stir, so as to increase the contact between the pellet fuel and the hot air, thereby achieving the purpose of high-efficiency drying and uniform drying;

above-mentioned patent all adopts simple agitating unit to stir fertilizer, even if stir, under the action of gravity, fertilizer also piles up in a large number in the bottom of container, is unfavorable for giving off of heat, steam, has reduced stoving and cooling efficiency.

Disclosure of Invention

The invention provides an energy-saving drying and cooling device for processing compound fertilizer particles, and aims to solve the problems.

The invention is realized in such a way that the energy-saving drying and cooling device for processing compound fertilizer particles comprises a drying unit and a cooling unit, wherein the drying unit comprises a drying cylinder, the cooling unit comprises a cooling cylinder, the drying cylinder is symmetrically fixed on the upper part of the cooling cylinder, a cavity is arranged in the cylinder wall of the drying cylinder, air injection holes communicated with the cavity are uniformly arranged on the inner wall of the drying cylinder, the inner cavity of the cooling cylinder is communicated with the cavity, a discharge hole of the drying cylinder is communicated with a feed inlet of the cooling cylinder through a communicating pipe, and a valve is arranged on the communicating pipe.

Preferably, a drying assembly is installed in the drying cylinder, the drying assembly comprises a hollow shaft, a spiral screen plate, an end screen plate and an air heater, the hollow shaft is concentrically and rotatably installed in the drying cylinder, one end of the hollow shaft is connected with a first motor for driving the hollow shaft to rotate, the first motor is fixedly installed on the outer wall of one end of the drying cylinder, the other end of the hollow shaft penetrates into and is rotatably connected with an air supply pipe, the air supply pipe is communicated with an air outlet of the air heater, air jet holes are uniformly formed in the hollow shaft, one end, close to the hollow shaft, of the spiral screen plate is fixed to the hollow shaft through a plurality of supporting rods, the end screen plate is fixed to the other end of the spiral screen plate, the end screen plate is attached to the inner side wall of the drying cylinder, and the lengths of the spiral screen plate and the end screen plate are equal to the inner length of the drying cylinder.

Preferably, a plurality of first ribs are fixedly arranged on the inner side wall of the spiral screen plate at intervals along the spiral track of the spiral screen plate.

Preferably, the outer side wall of the spiral screen plate is provided with a plurality of groups of rotating fans at intervals along the spiral track, each rotating fan comprises a rotating shaft and fan plates, the rotating shaft is rotatably connected with the spiral screen plate, and the rotating shaft is provided with a plurality of fan plates at intervals in the circumferential direction.

Preferably, be equipped with cooling module in the cooling cylinder, cooling module includes installation cover, wave form otter board and hair-dryer, the hair-dryer is used for the cooling of blowing in to the cooling cylinder, the concentric installation cover that is equipped with in the cooling cylinder, installation cover both ends rotate with the cooling cylinder both ends respectively and are connected, and fixed mounting has drive installation cover pivoted second motor on the outer wall of cooling cylinder one end, hoop interval fixed mounting has polylith wave form otter board on the installation cover, wave form otter board and the contact of cooling cylinder inner wall.

Preferably, a plurality of second ribs are circumferentially fixed on the inner side wall of the cooling cylinder at intervals.

Preferably, be equipped with the hob in the middle of two adjacent wave form otter boards, the hob runs through installation cover and screwed connection with it, and the hob is located and is fixed with many puddlers on the outside pole section of installation cover, and the hob is located the inside one end of installation cover and rotates and be connected with the mounting panel, installs the gyro wheel on the mounting panel, and the cover is equipped with first spring on the pole section that lies in between installation cover and the mounting panel on the hob, fixed mounting has the bull cam roller on the end wall that the second motor was kept away from to the cooling cylinder, and in the bull cam roller extended to the installation cover, the gyro wheel was contradicted with the bull cam roller, and the inside cavity of bull cam roller has evenly seted up the fumarole on it, is connected with the forced air cooling pipe on it, and the air outlet intercommunication of forced air cooling pipe and hair-dryer.

Preferably, a bottom plate is arranged below the cooling cylinder, and the bottom plate fixes the cooling cylinder through a support rod.

Preferably, a bottom plate is arranged below the cooling cylinder, a plurality of second springs are connected between the bottom plate and the cooling cylinder in the circumferential direction, a third motor is fixedly mounted on the bottom plate, a threaded rod is arranged on an output shaft of the third motor in a penetrating mode and in threaded connection with the output shaft of the third motor, an included angle is formed between the threaded rod and the output shaft of the third motor, one end of the threaded rod is connected with a driving sleeve through a ball bearing, a connecting rod is arranged in the driving sleeve in a penetrating mode, and the connecting rod is fixedly connected with the cooling cylinder.

Preferably, an annular seat is fixed on the bottom plate, the upper surface of the annular seat is in contact fit with the bottom end of the connecting rod, and the upper surface of the annular seat is in a wave shape.

Compared with the prior art, the embodiment of the application mainly has the following beneficial effects:

1. the fertilizer drying device is provided with a drying unit and a cooling unit, wherein the drying unit comprises a drying barrel, the cooling unit comprises a cooling barrel, the drying barrel is symmetrically fixed at the upper part of the cooling barrel, a cavity is arranged in the barrel wall of the drying barrel, air injection holes communicated with the cavity are uniformly formed in the inner wall of the drying barrel, the inner cavity of the cooling barrel is communicated with the cavity, and preferably, a channel is formed at the joint of the drying barrel and the barrel wall of the cooling barrel and is used for guiding hot air in the cooling barrel into the cavity and then spraying out the hot air through the air injection holes to dry fertilizer in the drying barrel, so that the waste of heat is avoided, and the fertilizer drying device is more energy-saving and environment-friendly;

2. the drying assembly is arranged and comprises a hollow shaft, a spiral screen plate, an end screen plate and a hot air blower, the hollow shaft is driven by a first motor to rotate forward and backward alternately, the spiral screen plate is driven by the hollow shaft to rotate forward and backward alternately, fertilizer particles in the drying cylinder gradually enter the spiral screen plate from outside to inside during forward rotation and move along the track of the spiral screen plate, and the fertilizer particles are gradually discharged from the spiral screen plate from inside to outside during backward rotation, so that the accumulation of the fertilizer is reduced, the fertilizer particles are fully dispersed and uniformly and fully contacted with hot air, and the drying efficiency is improved;

3. the cooling assembly is arranged and comprises a mounting sleeve, a waveform screen plate and a blower, the second motor drives the mounting sleeve to rotate, the mounting sleeve drives the waveform screen plate to rotate, the plurality of waveform screen plates separate the fertilizer to avoid fertilizer accumulation, meanwhile, the fertilizer moves along the waveform screen plate in the rotating process and is fully contacted with cold air to contribute to heat dissipation, the movement speed is changed due to waveform setting, the movement track is changed, and the cooling effect is better;

4. be equipped with the second bead, when the wave form otter board passes through the second bead, the second bead blocks it, and wave form otter board takes place elastic deformation, and the second bead can't continue to block after the certain degree, and the wave form otter board resumes initial condition rapidly to form impact, the shed to fertilizer, further improved dispersion effect.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

FIG. 4 is a schematic structural diagram of another embodiment of the present invention;

fig. 5 is a schematic structural diagram of yet another embodiment of the present invention.

Notations for reference numerals: 1-bottom plate, 2-support rod, 3-cooling cylinder, 4-stirring rod, 5-spiral rod, 6-wave screen plate, 7-second rib, 8-communicating pipe, 9-chamber, 10-drying cylinder, 11-air jet hole, 12-rotating fan, 13-spiral screen plate, 14-feed hopper, 15-hollow shaft, 16-air supply pipe, 17-end screen plate, 18-multi-head cam roller, 19-roller, 20-mounting sleeve, 21-second spring, 22-threaded rod, 23-connecting rod, 24-driving sleeve, 25-third motor and 26-annular seat.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In an embodiment of the invention, an energy-saving drying and cooling device for processing compound fertilizer particles is provided, as shown in fig. 1-2, the energy-saving drying and cooling device comprises a drying unit and a cooling unit, the drying unit comprises a drying cylinder 10, the cooling unit comprises a cooling cylinder 3, the drying cylinder 10 is symmetrically fixed on the upper portion of the cooling cylinder 3, in this embodiment, a welding and fixing manner is preferably adopted, a feed hopper 14 is arranged at the top of the drying cylinder 10, a chamber 9 is arranged in the cylinder wall of the drying cylinder 10, air injection holes 11 communicated with the chamber 9 are uniformly arranged on the inner wall of the drying cylinder 10, preferably, a blocking net is arranged in the air injection holes 11 to prevent fertilizer particles from blocking the air injection holes 11 or entering the chamber 9 through the air injection holes 11, the inner cavity of the cooling cylinder 3 is communicated with the chamber 9, preferably, a channel is arranged at the connection position of the drying cylinder 10 and the cylinder wall of the cooling cylinder 3 for guiding hot gas in the cooling cylinder 3 into the chamber 9, then by 11 blowout of fumarole, dry the fertilizer in the section of thick bamboo 10 of drying, avoid thermal waste, it is more energy-concerving and environment-protective, passageway one end installation air exhauster, the discharge gate of section of thick bamboo 10 and the feed inlet of cooling cylinder 3 are through communicating pipe 8 intercommunication, install the valve on communicating pipe 8, the preferred automatically controlled valve of valve, the cooperation sets up humidity transducer in section of thick bamboo 10 of drying, signal feedback through humidity transducer is to the controller, preferred controller is the singlechip, then control the switch of automatically controlled valve.

In one embodiment of the present invention, a drying assembly is installed in the drying cylinder 10, the drying assembly includes a hollow shaft 15, a spiral screen 13, an end screen 17 and a hot air blower, the hollow shaft 15 is concentrically and rotatably installed in the drying cylinder 10, one end of the hollow shaft 15 is connected to a first motor for driving the hollow shaft 15 to rotate, the first motor is a forward and reverse rotation motor, the first motor drives the hollow shaft 15 to rotate through a gear pair, the first motor is fixedly installed on the outer wall of one end of the drying cylinder 10, preferably, a bolt is used for installation, the other end of the hollow shaft 15 penetrates and is rotatably connected with an air supply pipe 16, the air supply pipe 16 is communicated with an air outlet of the hot air blower, the hot air blower is preferably installed on the outer wall of the drying cylinder 10 through the bolt, the hollow shaft 15 is uniformly provided with air injection holes 11, one end of the spiral screen 13 close to the hollow shaft 15 is fixed to the hollow shaft 15 through a plurality of support rods, preferably, the support rods are fixed to the hollow shaft 15 and the spiral screen 13 through welding, the other end of the spiral screen plate 13 is fixed with an end screen plate 17, the end of the end screen plate 17 is attached to the inner side wall of the drying cylinder 10, the lengths of the spiral screen plate 13 and the end screen plate 17 are equal to the inner length of the drying cylinder 10, in operation, the hollow shaft 15 is driven by the first motor to alternately rotate positively and negatively, the hollow shaft 15 drives the spiral screen plate 13 to alternately rotate positively and negatively, during positive rotation, fertilizer particles in the drying cylinder 10 gradually enter the spiral screen plate 13 from outside to inside, move along the track of the spiral screen plate 13, during reverse rotation, are gradually discharged from the spiral screen plate 13 from inside to outside gradually, accumulation of fertilizer is reduced, sufficient dispersion and hot air are uniformly and sufficiently contacted, and drying efficiency is improved.

In one embodiment of the present invention, as shown in fig. 3, a plurality of first ribs are fixedly installed on the inner side wall of the spiral screen 13 at intervals along the spiral track, preferably by screws, and the first ribs are arranged to impact on the first ribs during fertilizer movement, so as to further help to disperse the fertilizer.

In an embodiment of the present invention, as shown in fig. 3, a plurality of sets of rotating fans 12 are rotatably mounted on the outer side wall of the spiral screen 13 at intervals along the spiral track, each rotating fan 12 includes a rotating shaft and a fan plate, the rotating shaft is rotatably connected with the spiral screen 13, preferably, the rotating shaft is mounted by using a support plate and a bearing, the support plate and the spiral screen are fixed by using screws, the rotating shaft is rotatably connected with the support plate by using the bearing, the plurality of fan plates are circumferentially mounted on the rotating shaft at intervals, the fertilizer falls onto the rotating fans 12, and the rotating fans 12 rotate, so that the fertilizer can be better dispersed, and drying is facilitated.

In one embodiment of the invention, a cooling assembly is arranged in the cooling cylinder 3, the cooling assembly comprises a mounting sleeve 20, a wave-shaped screen plate 6 and a blower, the blower is used for blowing air into the cooling cylinder 3 for cooling, the mounting sleeve 20 is concentrically arranged in the cooling cylinder 3, two ends of the mounting sleeve 20 are respectively rotatably connected with two ends of the cooling cylinder 3, a second motor for driving the mounting sleeve 20 to rotate is fixedly arranged on the outer wall of one end of the cooling cylinder 3, an output shaft of the second motor preferably drives the mounting sleeve 20 through a gear pair, a plurality of wave-shaped screen plates 6 are fixedly arranged on the mounting sleeve 20 at intervals in the axial direction and are preferably mounted by screws, the wave-shaped screen plate 6 is contacted with the inner wall of the cooling cylinder 3, the second motor drives the mounting sleeve 20 to rotate, the mounting sleeve 20 drives the wave-shaped screen plate 6 to rotate, the plurality of wave-shaped screen plates 6 separate fertilizers to avoid fertilizer accumulation, and meanwhile the fertilizers move along the wave-shaped screen plate 6 during the rotation process, contact with cold wind fully, help the giving off of heat, the wave form sets up makes the velocity of motion change, and the motion trail changes, and the cooling effect is better.

In an embodiment of the invention, a plurality of second ribs 7 are circumferentially fixed on the inner side wall of the cooling cylinder 3 at intervals, when the corrugated mesh plate 6 passes through the second ribs 7, the second ribs 7 block the corrugated mesh plate 6, the corrugated mesh plate 6 elastically deforms, the second ribs 7 cannot continue to block after a certain degree, and the corrugated mesh plate 6 rapidly recovers to an initial state, so that the fertilizer is impacted and thrown, and the dispersing effect is further improved.

In a further preferred embodiment of the present invention, as shown in fig. 2, a spiral rod 5 is disposed between two adjacent corrugated net plates 6, the spiral rod 5 penetrates through and is spirally connected with a mounting sleeve 20, the spiral rod 5 is preferably disposed along a radial direction of the mounting sleeve 20, a plurality of stirring rods 4 are fixed on a rod section of the spiral rod 5 located outside the mounting sleeve 20, preferably by welding, one end of the spiral rod 5 located inside the mounting sleeve 20 is rotatably connected with a mounting plate, a roller 19 is mounted on the mounting plate, a first spring is sleeved on a rod section of the spiral rod 5 located between the mounting sleeve 20 and the mounting plate, an elastic force of the first spring drives the spiral rod 5 to move towards the inside of the mounting sleeve 20, a multi-head cam roller 18 is fixedly mounted on an end wall of the cooling cylinder 3 far from the second motor, preferably by welding, the multi-head cam roller 18 extends into the mounting sleeve 20, the roller 19 abuts against the multi-head cam roller 18, the inside cavity of bull cam roller 18, fumarole 11 has evenly been seted up on it, be connected with the forced air cooling pipe on it, the air outlet intercommunication of forced air cooling pipe and hair-dryer, it rotates to drive hob 5 when installation cover 20 rotates, hob 5 rotates when the time with 18 different positions contacts of bull cam roller, cooperation through first spring, make

hob

5 and 4 limit rotations limit reciprocal inside and outside removal on the hob, stir the dispersion more fully to the fertilizer granule, it is abundant, even and cold wind contact cooling, the cooling efficiency is improved.

In one embodiment of the present invention, a bottom plate 1 is disposed below the cooling cylinder 3, and the bottom plate 1 fixes the cooling cylinder 3 through a support rod 2, preferably by welding.

In one embodiment of the present invention, as shown in fig. 4, a bottom plate 1 is arranged below the cooling cylinder 3, a plurality of second springs 21 are circumferentially connected between the bottom plate 1 and the cooling cylinder 3, a third motor 25 is fixedly mounted on the bottom plate 1, preferably, a bolt is used for mounting, a threaded rod 22 is inserted and connected with an output shaft of the third motor 25 in a threaded manner, an included angle is formed between the threaded rod 22 and the output shaft of the third motor 25, preferably, the included angle is 90 degrees, one end of the threaded rod 22 is connected with a driving sleeve 24 through a ball bearing, a connecting rod 23 is inserted in the driving sleeve 24, the connecting rod 23 is fixedly connected with the cooling cylinder 3, preferably, by welding, the third motor 25 drives the threaded rod 22 to rotate, the third threaded rod 22 drives the driving sleeve 24 to revolve, the driving sleeve 24 drives the cooling cylinder 3 to move through the connecting rod 23, so that the cooling cylinder 3 circumferentially shakes, the third threaded rod 22 is adjusted by rotation, further adjusting the movement range of the driving sleeve 24 and adjusting the shaking range and amplitude of the cooling cylinder 3, so that the fertilizer can move more violently.

In a further preferred embodiment of the present invention, as shown in fig. 5, an annular seat 26 is fixed on the bottom plate 1, the upper surface of the annular seat 26 is in contact fit with the bottom end of the connecting rod 23, the upper surface of the annular seat 26 is in a wave shape, and the connecting rod 23 drives the cooling cylinder 3 to move up and down by the fit of the annular seat 26 and the connecting rod 23, which further helps to disperse the fertilizer.

In summary, the invention provides an energy-saving drying and cooling device for processing compound fertilizer granules, which comprises

It should be noted that, for simplicity of description, the above-mentioned embodiments are described as a series of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or communication connection may be an indirect coupling or communication connection between devices or units through some interfaces, and may be in a telecommunication or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The above examples are only used to illustrate the technical solutions of the present invention, and do not limit the scope of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from these embodiments without making any inventive step, fall within the scope of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still make various combinations, additions, deletions or other modifications of the features of the embodiments of the present invention according to the situation without conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, and these technical solutions also fall within the protection scope of the present invention.

Claims

1. An energy-saving drying and cooling device for processing compound fertilizer particles comprises a drying unit and a cooling unit, wherein the drying unit comprises a drying cylinder, and the cooling unit comprises a cooling cylinder;

the drying device is characterized in that a drying assembly is installed in the drying cylinder and comprises a hollow shaft, a spiral screen plate, an end screen plate and an air heater, the hollow shaft is concentrically and rotatably installed in the drying cylinder, one end of the hollow shaft is connected with a first motor for driving the hollow shaft to rotate, the first motor is fixedly installed on the outer wall of one end of the drying cylinder, the other end of the hollow shaft penetrates into and is rotatably connected with an air supply pipe, the air supply pipe is communicated with an air outlet of the air heater, air jet holes are uniformly formed in the hollow shaft, one end, close to the hollow shaft, of the spiral screen plate is fixed with the hollow shaft through a plurality of supporting rods, the other end of the spiral screen plate is fixedly provided with the end screen plate, the end of the end screen plate is attached to the inner side wall of the drying cylinder, and the lengths of the spiral screen plate and the end screen plate are equal to the inner length of the drying cylinder.

2. The energy-saving drying and cooling device for compound fertilizer granule processing as claimed in claim 1, wherein a plurality of first ribs are fixedly installed on the inner side wall of the spiral net plate at intervals along the spiral track.

3. The energy-saving drying and cooling device for compound fertilizer granule processing as claimed in claim 1, wherein the outer side wall of the spiral screen plate is rotatably provided with a plurality of sets of rotating fans at intervals along the spiral track, each rotating fan comprises a rotating shaft and a fan plate, the rotating shaft is rotatably connected with the spiral screen plate, and a plurality of fan plates are circumferentially arranged on the rotating shaft at intervals.

4. The energy-saving drying and cooling device for compound fertilizer particle processing as claimed in claim 1, wherein a cooling assembly is arranged in the cooling cylinder, the cooling assembly comprises an installation sleeve, a wave-shaped screen plate and a blower, the blower is used for blowing air into the cooling cylinder for cooling, the installation sleeve is concentrically arranged in the cooling cylinder, two ends of the installation sleeve are respectively rotatably connected with two ends of the cooling cylinder, a second motor for driving the installation sleeve to rotate is fixedly installed on the outer wall of one end of the cooling cylinder, a plurality of wave-shaped screen plates are fixedly installed on the installation sleeve at circumferential intervals, and the wave-shaped screen plates are in contact with the inner wall of the cooling cylinder.

5. The energy-saving drying and cooling device for compound fertilizer granule processing as claimed in claim 1, wherein a plurality of second ribs are fixed on the inner side wall of the cooling cylinder at intervals in the circumferential direction.

6. The energy-saving drying and cooling device for compound fertilizer granule processing as claimed in claim 4, wherein a screw rod is disposed between two adjacent corrugated net plates, the screw rod penetrates through and is spirally connected with the mounting sleeve, a plurality of stirring rods are fixed on a rod section of the screw rod located outside the mounting sleeve, one end of the screw rod located inside the mounting sleeve is rotatably connected with a mounting plate, a roller is mounted on the mounting plate, a first spring is sleeved on a rod section of the screw rod located between the mounting sleeve and the mounting plate, a multi-head cam roller is fixedly mounted on an end wall of the cooling cylinder far away from the second motor, the multi-head cam roller extends into the mounting sleeve, the roller is abutted against the multi-head cam roller, the multi-head cam roller is hollow and is uniformly provided with air injection holes, an air cooling pipe is connected with the air injection holes, and the air cooling pipe is communicated with an air outlet of a blower.

7. The energy-saving drying and cooling device for compound fertilizer granule processing as claimed in claim 1, wherein a bottom plate is arranged below the cooling cylinder, and the cooling cylinder is fixed on the bottom plate through a support rod.

8. The energy-saving drying and cooling device for compound fertilizer particle processing as claimed in claim 1, wherein a bottom plate is arranged below the cooling cylinder, a plurality of second springs are connected between the bottom plate and the cooling cylinder in the circumferential direction, a third motor is fixedly mounted on the bottom plate, a threaded rod is arranged on an output shaft of the third motor in a penetrating and threaded manner, an included angle is formed between the threaded rod and the output shaft of the third motor, one end of the threaded rod is connected with a driving sleeve through a ball bearing, a connecting rod is arranged in the driving sleeve in a penetrating manner, and the connecting rod is fixedly connected with the cooling cylinder.

9. The energy-saving drying and cooling device for compound fertilizer granule processing as claimed in claim 8, wherein the bottom plate is fixed with an annular seat, the upper surface of the annular seat is in contact fit with the bottom end of the connecting rod, and the upper surface of the annular seat is in a wave shape.