CN215196806U - A whitewashing hot melt combined granulation device for producing processing compound thoughtlessly fertile granule - Google Patents

Abstract

The utility model discloses a guniting and hot melting combined granulating device for producing and processing compound fertilizer particles, which belongs to the field of compound fertilizer processing and comprises a slurry melting mechanism, a guniting spray head, a secondary granulator, a cooler and a screening machine, the slurry melting mechanism is communicated with the guniting spray head through a discharge pipe, the guniting spray head is sequentially communicated with the secondary granulator, the cooler and the sieving machine, the slurry melting mechanism comprises a supporting plate, a push-pull plate, a plurality of hot melting bins, a first feed port, a stirring mechanism, a plurality of first through holes and second through holes, wherein the push-pull plate is located on the upper portion of the supporting plate and moves back and forth along the supporting plate, the hot melting bins are located on the upper portion of the push-pull plate, the first feed port is located at the top of each hot melting bin, the stirring mechanism is located in each hot melting bin, the first through holes are located in the push-pull plate, the second through holes are located in the supporting plate and staggered with the first through holes, and one side of the push-pull plate extends to the outer side of each hot melting bin. The compound fertilizer raw materials are divided into a plurality of hot melting bins, so that the compound fertilizer is small in size and uniform in heating and stirring.

Description

A whitewashing hot melt combined granulation device for producing processing compound thoughtlessly fertile granule

Technical Field

A whitewashing hot melt combined granulation device for producing and processing compound fertilizer granule belongs to fertilizer processing technology field, concretely relates to compound fertilizer processing technology field.

Background

The compound fertilizer is a fertilizer prepared by a chemical method and/or a mixing method and containing at least two of three nutrients of nitrogen, phosphorus and potassium.

At present, the production modes of the compound fertilizer mainly comprise an agglomeration method, a melt-spraying method, an extrusion method and the like. The agglomeration method is a production method commonly adopted by small and medium-sized enterprises in China, has simple process and moderate investment, can produce compound fertilizers with various concentrations of high, medium and low, has round and smooth particles and higher sphericity, but the equipment of the traditional agglomeration method completely depends on manual operation skills and experience to control the production, has high operation difficulty, is easy to cause unbalanced and unstable production, and particularly cannot produce high-nitrogen high-concentration products sometimes. The traditional two modes of melt guniting high-tower granulation and extrusion granulation do not need drying, but the high-tower granulation investment is large, the high-tower granulation method is only suitable for the production of high-nitrogen formula fertilizers, the product dissolution speed is high, the defect of low utilization rate of fertilizer nutrients is easily caused, the waste of the fertilizers is caused, and the particle size is often uneven. Although the extrusion granulation has small investment and easy operation, the appearance of the granules is poor, and the granules are easy to break and pulverize, thereby affecting the overall appearance and quality of the compound fertilizer.

Application No.: CN201420241669.5 discloses a guniting and hot melting combined granulation system for producing and processing compound fertilizer particles, wherein a raw material inlet bin is communicated with a speed-regulating metering feeding machine body, and the speed-regulating metering feeding machine body is communicated with a slurry melting tank through a feeding pipe; the slurry melting tank is communicated with the secondary granulation equipment through a heat insulation discharging pipe, a guniting spray head is arranged between the heat insulation discharging pipe and the secondary granulation equipment, and the guniting spray head sprays the melted slurry into the secondary granulation equipment; the screening equipment is communicated with the raw material inlet bin or/and the slurry melting tank through a circulating recovery pipeline. The utility model discloses an adopt brand-new speed governing measurement feed organism structure, the ground paste melting tank both can compound thoughtlessly fertile raw materials misce bene, still can carry out the electromagnetism to the raw materials and preheat, forms fused ground paste through electromagnetic heating to in the whitewashing shower nozzle spouts the fused ground paste into secondary granulation equipment, make compound thoughtlessly fertile finished product stable in quality, unanimous, improved product quality and production efficiency after compound thoughtlessly fertile granulation greatly.

The defect that above-mentioned patent exists is that the ground paste melting tank is great, and the stirring rake only stirs at the horizontal direction, and the melting ground paste heating is inhomogeneous, and in addition, when the screening after the granulation cooling, the compound thoughtlessly fertile granule that cooling arrangement flowed can pile up in the top of screening equipment, because of the material does not evenly spread out, leads to screening efficiency to reduce.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a whitewashing hot melt combined granulation device for producing and processing compound fertilizer granule to solve the defect that current ground paste melting tank can not the even heating ground paste.

The utility model adopts the technical scheme as follows:

the combined guniting and hot melting granulation device for producing and processing compound fertilizer particles comprises a slurry melting mechanism, a guniting spray head, a secondary granulator, a cooler and a screening machine, wherein the slurry melting mechanism is communicated with the guniting spray head through a discharge pipe, the guniting spray head is sequentially communicated with the secondary granulator, the cooler and the screening machine, the slurry melting mechanism comprises a support plate, a push-pull plate which is positioned at the upper part of the support plate and moves back and forth along the support plate, a plurality of hot melting bins which are positioned at the upper part of the push-pull plate, a first feed inlet which is positioned at the top of each hot melting bin, a stirring mechanism which is positioned in each hot melting bin, a plurality of first through holes which are positioned on the push-pull plate and second through holes which are positioned on the support plate and staggered with the first through holes, one side of the push-pull plate extends to the outer side of the hot melting bins, and each hot melting bin comprises a shell, the electric heating device comprises an inner shell positioned in the outer shell and an electric heating pipe positioned between the outer shell and the inner shell.

The working and using process is as follows: push away the push-and-pull board to in the hot melt storehouse, make first through-hole and second pass crisscross, in the compound fertilizer raw materials that will mix evenly added the hot melt storehouse from first feed inlet, electric heating pipe heats the hot melt storehouse, rabbling mechanism stirs the melting thick liquids simultaneously and forms the melting thick liquids, later pulling push-and-pull board, make first through-hole and second through-hole intercommunication, the melting thick liquids spout into the secondary granulator through the whitewashing shower nozzle under the discharging pipe effect, secondary granulation equipment, cooling device and screening equipment cooperate the connection in proper order, what come out from the screening equipment is finished product compound fertilizer granule, the defective work that the screening machine screened out is carried to the hot melt storehouse through delivery pump or screw feeder and is used again. Through the setting of rabbling mechanism in a plurality of hot melt storehouses and every hot melt storehouse, divide compound thoughtlessly fertile raw materials in a plurality of hot melt storehouses, small, heating and stirring have solved the defect that current ground paste melting tank can not the even heating ground paste.

Furthermore, rabbling mechanism is including being located the agitator disk in the hot melt storehouse, be located the telescopic link on agitator disk upper portion and being located the first motor of telescopic link tip, the telescopic link tip extends to the outside in hot melt storehouse, the hot melt storehouse is outside be provided with rotary drive mechanism on the telescopic link. First motor drives the telescopic link and stretches out and draws back from top to bottom, drives the agitator disk simultaneously and stirs from top to bottom, and rotary driving mechanism drives the telescopic link rotation simultaneously, enables the agitator disk and stirs in horizontal direction and vertical direction, makes the melting ground paste misce bene.

Furthermore, the rotary driving mechanism comprises a driven gear positioned on the telescopic rod, a driving gear meshed with the driven gear and a second motor driving the driving gear to rotate, and the second motor is positioned at the top of the hot melting bin. The second motor drives the driving gear to rotate, and the driving gear drives the driven gear and the telescopic rod to rotate, so that the stirring plate is driven to rotate.

Furthermore, a protection hose is arranged on the telescopic rod in the hot melting bin. The protection hose is an extensible or contractible hose, and the protection hose plays a role in protecting the telescopic rod in the melting bin.

Furthermore, a plurality of third through holes are formed in the stirring plate. The third through hole enables the materials to shuttle up and down in the vertical stirring of the stirring disc, so that the stirring is more labor-saving and more uniform.

Furthermore, the periphery of the stirring plate is provided with a hairbrush. The material of hot melt storehouse inner wall is scraped off in the agitator rotation to the brush, prevents that the material from gluing in hot melt storehouse inner wall.

Furthermore, a temperature sensor is arranged in each hot melting bin. The outside in hot melt storehouse still is provided with the controller of this area conventionality, and temperature sensor is connected with the controller electricity, and temperature sensor can detect the temperature of compound fertile ground paste in the hot melt storehouse at any time to with this temperature real-time feedback to the controller on, the staff of being convenient for in time look over and open or close electric heating pipe in real time. The electric heating tube of the present application is also electrically connected with the controller.

Further, the bottom of backup pad is provided with the heat preservation storehouse of infundibulate, the heat preservation storehouse with the discharging pipe intercommunication. The heat preservation bin is funnel-shaped, and one of the heat preservation bin is used for preserving heat of the compound fertilizer slurry, and the other heat preservation bin is used for enabling the compound fertilizer slurry to fall under the action of gravity.

Furthermore, a discharge valve, a flowmeter and a metering plunger pump are arranged on the discharge pipe; the guniting nozzle is also communicated with an air compressor through a vent pipe, and the vent pipe is provided with an adjusting valve. The air compressor can continuously generate compressed air, the compressed air has a high-pressure effect, the compound fertilizer positioned in the guniting nozzle can generate a guniting effect, and the flow and the speed of gas introduced into the vent pipe can be adjusted through the adjusting valve, so that the gas pressure of the vent pipe entering the guniting nozzle is adjusted; the metering plunger pump can control the flow of the compound fertilizer slurry entering the inner part of the guniting nozzle; the discharge valve is a switch valve on the discharge pipe, and the flow meter is flow statistical equipment and can detect the flow of the compound fertilizer slurry in the discharge pipe.

Further, the secondary granulator with communicate through first unloading pipe between the cooler, the top of screening machine is provided with the feeder, the cooler communicate through second unloading pipe between the feeder, second unloading pipe is located in the middle of the upper portion of feeder, the level is provided with the screw axis in the feeder, the screw axis bilateral symmetry of second unloading pipe below is provided with first spiral and second spiral, the screw axis extends to the feeder outside, the feeder outside be provided with the third motor on the screw axis, screening machine upper portion is provided with the second feed inlet, the bottom of feeder is provided with a plurality of third unloading pipes that are located the second feed inlet top, be provided with first switch and second switch on first unloading pipe and the second unloading pipe respectively. Through the setting of conveying machine, compound fertilizer granule after the cooling falls down from the middle of conveying machine upper portion, and the effect of reverse first spiral and second spiral is to both sides dispersion and fall down from a plurality of third unloading pipes, gets into the upper portion of screening machine second feed inlet, and the abundant dispersion is opened, makes screening efficiency high.

In the technical scheme of the application, the secondary granulation equipment can be disc granulation equipment or rotary drum granulation equipment.

The push-pull plate is movably connected with the support plate, and the push-pull plate can be driven manually or by a conventional driving mechanism in the field, such as a motor and the like.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. in the utility model, the compound fertilizer raw materials are distributed in the hot melting bins through the arrangement of the hot melting bins and the stirring mechanism in each hot melting bin, so that the compound fertilizer raw materials are small in size and uniform in heating and stirring;

2. the first motor drives the telescopic rod to extend up and down, and simultaneously drives the stirring disc to stir up and down, and the rotary driving mechanism drives the telescopic rod to rotate, so that the stirring disc can stir in the horizontal direction and the vertical direction, and the molten slurry is uniformly mixed;

3. the protective hose is an extensible or contractible hose and plays a role in protecting the telescopic rod in the melting bin;

4. the third through hole enables the materials to shuttle up and down in the vertical stirring process of the stirring disc, so that the stirring is more labor-saving and more uniform;

5. the brush scrapes off the materials on the inner wall of the hot melting bin in the rotation of the stirring disc, so that the materials are prevented from being adhered to the inner wall of the hot melting bin;

6. a controller which is conventional in the field is also arranged outside the hot melting bin, the temperature sensor is electrically connected with the controller, the temperature sensor can detect the temperature of the compound fertilizer slurry in the hot melting bin at any time and feed back the temperature to the controller in real time, and therefore workers can check the temperature in time and open or close the electric heating pipe in real time conveniently;

7. the heat preservation bin is funnel-shaped, wherein the heat preservation bin is used for preserving the heat of the compound fertilizer slurry, and the compound fertilizer slurry falls under the action of gravity;

8. the air compressor can continuously generate compressed air, the compressed air has a high-pressure effect, the compound fertilizer positioned in the guniting nozzle can generate a guniting effect, and the flow and the speed of gas introduced into the vent pipe can be adjusted through the adjusting valve, so that the gas pressure of the vent pipe entering the guniting nozzle is adjusted; the metering plunger pump can control the flow of the compound fertilizer slurry entering the inner part of the guniting nozzle; the discharge valve is a switch valve on the discharge pipe, and the flow meter is flow statistical equipment and can detect the flow of the compound fertilizer slurry in the discharge pipe;

9. through the setting of conveying machine, compound fertilizer granule after the cooling falls down from the middle of conveying machine upper portion, and the effect of reverse first spiral and second spiral is to both sides dispersion and fall down from a plurality of third unloading pipes, gets into the upper portion of screening machine second feed inlet, and the abundant dispersion is opened, makes screening efficiency high.

Drawings

FIG. 1 is a schematic structural view of a combined spraying and hot melting granulation apparatus for producing and processing compound fertilizer particles.

The labels in the figure are: 1-a first motor, 2-a first feed inlet, 3-a brush, 4-a first through hole, 5-a push-pull plate, 6-a support plate, 7-a second through hole, 8-a heat preservation bin, 9-a discharge valve, 10-a flow meter, 11-a discharge pipe, 12-a metering plunger pump, 13-a cooler, 14-a second switch, 15-a first screw, 16-a third discharge pipe, 17-a second feed inlet, 18-a sieving machine, 19-a second screw, 20-a third motor, 21-a screw shaft, 22-a material conveyer, 23-a second discharge pipe, 24-a first switch, 25-a first discharge pipe, 26-a secondary granulator, 27-a guniting spray nozzle, 28-a vent pipe, 29-a regulating valve, 30-an air compressor, 31-stirring disc, 32-third through hole, 33-protective hose, 34-telescopic rod, 35-electric heating tube, 36-inner shell, 37-outer shell, 38-second motor, 39-driving gear and 40-driven gear.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1, the combined guniting and hot melting granulation apparatus for producing and processing compound fertilizer particles comprises a slurry melting mechanism, a guniting spray head 27, a secondary granulator 26, a cooler 13 and a screening machine 18, wherein the slurry melting mechanism is communicated with the guniting spray head 27 through a discharge pipe 11, the guniting spray head 27 is sequentially communicated with the secondary granulator 26, the cooler 13 and the screening machine 18, the slurry melting mechanism comprises a support plate 6, a push-pull plate 5 which is positioned on the upper portion of the support plate 6 and moves back and forth along the support plate 6, a plurality of hot melting bins which are positioned on the upper portion of the push-pull plate 5, a first feed inlet 2 which is positioned at the top of each hot melting bin, a stirring mechanism which is positioned in each hot melting bin, a plurality of first through holes 4 which are positioned on the push-pull plate 5, and second through holes 7 which are positioned on the support plate 6 and are staggered with the first through holes 4, one side of the push-pull plate 5 extends to the outer side of the hot melting bins, and each hot melting bin comprises an outer shell 37, an inner shell 36 positioned in the outer shell 37 and an electric heating pipe 35 positioned between the outer shell 37 and the inner shell 36.

The working and using process is as follows: push-and-pull board 5 is pushed to the hot melt storehouse in, make first through-hole 4 and second pass crisscross, compound fertilizer raw materials with the misce bene add the hot melt storehouse from first feed inlet 2 in, electric heating pipe 35 heats the hot melt storehouse, simultaneously rabbling mechanism stirs the melting thick liquids and forms the melting thick liquids, later pulling push-and-pull board 5, make first through-hole 4 and second through-hole 7 intercommunication, the melting thick liquids spout into secondary granulator 26 through whitewashing shower nozzle 27 under the effect of discharging pipe 11, secondary granulation equipment, cooling device and screening equipment cooperate the connection in proper order, what come out from the screening equipment is finished product compound fertilizer granule promptly, the defective work that screening machine 18 screened out is carried to the hot melt storehouse back reuse through delivery pump or screw feeder 22. Through the setting of rabbling mechanism in a plurality of hot melt storehouses and every hot melt storehouse, divide compound thoughtlessly fertile raw materials in a plurality of hot melt storehouses, small, heating and stirring have solved the defect that current ground paste melting tank can not the even heating ground paste.

Example 2

As shown in fig. 1, on the basis of embodiment 1, the stirring mechanism includes a stirring disk 31 located in the hot melting bin, an expansion link 34 located on an upper portion of the stirring disk 31, and a first motor 1 located at an end portion of the expansion link 34, where the end portion of the expansion link 34 extends to an outside of the hot melting bin, and the expansion link 34 outside the hot melting bin is provided with a rotation driving mechanism. First motor 1 drives telescopic link 34 and stretches out and draws back from top to bottom, drives agitator disk 31 and stirs from top to bottom simultaneously, and rotary driving mechanism drives telescopic link 34 rotatory simultaneously, enables agitator disk 31 and stirs at horizontal direction and vertical direction, makes the melting ground paste misce bene.

Example 3

As shown in fig. 1, based on embodiment 2, the rotary driving mechanism includes a driven gear 40 located on the telescopic rod 34, a driving gear 39 engaged with the driven gear 40, and a second motor 38 driving the driving gear 39 to rotate, wherein the second motor 38 is located at the top of the hot melting bin. The second motor 38 drives the driving gear 39 to rotate, and the driving gear 39 drives the driven gear 40 and the telescopic rod 34 to rotate, so as to drive the stirring plate 31 to rotate.

Example 4

As shown in fig. 1, on the basis of embodiment 2, a protection hose 33 is disposed on the telescopic rod 34 in the hot melting bin. The protective hose 33 is an extensible or contractible hose, and the protective hose 33 protects the telescopic rod 34 in the melting bin.

Example 5

As shown in fig. 1, in addition to embodiment 2, a plurality of third through holes 32 are provided in the stirring plate 31. The third through hole 32 enables the materials to shuttle up and down in the up-and-down stirring process of the stirring disc 31, so that the stirring is more labor-saving and more uniform.

Example 6

As shown in fig. 1, in addition to embodiment 2, the outer circumference of the stirring plate 31 is provided with the fur brush 3. The brush 3 scrapes the material of hot melt storehouse inner wall in the agitator disk 31 rotation, prevents that the material from gluing in hot melt storehouse inner wall.

Example 7

As shown in fig. 1, on the basis of embodiment 1, a temperature sensor is arranged in each hot melting bin. The outside in hot melt storehouse still is provided with the controller of this area conventionality, and temperature sensor is connected with the controller electricity, and temperature sensor can detect the temperature of compound fertile ground paste in the hot melt storehouse at any time to with this temperature real-time feedback to the controller on, the staff of being convenient for in time look over and open or close electric heating pipe 35 in real time. The electric heating tube 35 of the present application is also electrically connected to the controller.

Example 8

As shown in fig. 1, on the basis of embodiment 1, a funnel-shaped heat preservation bin 8 is arranged at the bottom of the supporting plate 6, and the heat preservation bin 8 is communicated with the discharge pipe 11. The heat preservation bin 8 is funnel-shaped, and one of the heat preservation bin is used for preserving heat of the compound fertilizer slurry, and the other heat preservation bin is used for enabling the compound fertilizer slurry to fall under the action of gravity.

Example 9

As shown in fig. 1, in addition to embodiment 1, the discharge pipe 11 is provided with a discharge valve 9, a flow meter 10 and a metering plunger pump 12; the guniting nozzle 27 is also communicated with an air compressor 30 through a vent pipe 28, and the vent pipe 28 is provided with an adjusting valve 29. The air compressor 30 can continuously generate compressed air, the compressed air has a high-pressure effect, the compound fertilizer positioned in the guniting nozzle 27 can generate a guniting effect, and the flow and the speed of the gas introduced into the vent pipe 28 can be adjusted through the adjusting valve 29, so that the gas pressure of the vent pipe 28 entering the guniting nozzle 27 is adjusted; the metering plunger pump 12 can control the flow of the compound fertilizer slurry entering the inner part of the guniting nozzle 27; the discharge valve 9 is a switch valve on the discharge pipe 11, and the flow meter 10 is flow statistical equipment, and can detect the flow of the compound fertilizer slurry in the discharge pipe 11.

Example 10

As shown in fig. 1, on the basis of embodiment 1, the secondary granulator 26 is communicated with the cooler 13 through a first discharging pipe 25, the material conveyer 22 is disposed above the sieving machine 18, the cooler 13 is communicated with the material conveyer 22 through a second discharging pipe 23, the second discharging pipe 23 is located in the middle of the upper portion of the material conveyer 22, a screw shaft 21 is horizontally disposed in the material conveyer 22, a first screw 15 and a second screw 19 are symmetrically disposed on two sides of the screw shaft 21 below the second discharging pipe 23, the screw shaft 21 extends to the outer side of the material conveyer 22, a third motor 20 is disposed on the screw shaft 21 outside the material conveyer 22, a second feeding hole 17 is disposed on the upper portion of the sieving machine 18, a plurality of third discharging pipes 16 located above the second feeding hole 17 are disposed at the bottom of the material conveyer 22, and a first switch 24 and a second switch are disposed on the first discharging pipe 25 and the second discharging pipe 23 respectively 14. Through the setting of defeated material machine 22, compound fertilizer granule after the cooling falls down from defeated material machine 22 upper portion centre, and the effect of reverse first spiral 15 and second spiral 19 is dispersed to both sides and is fallen down from a plurality of third unloading pipes 16, gets into the upper portion of screening machine 18 second feed inlet 17, and the abundant dispersion is opened, makes screening efficiency high.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A whitewashing hot melt combined granulation device for producing processing compound thoughtlessly fertile granule, its characterized in that: the device comprises a slurry melting mechanism, a guniting spray head (27), a secondary granulator (26), a cooler (13) and a screening machine (18), wherein the slurry melting mechanism is communicated with the guniting spray head (27) through a discharge pipe (11), the guniting spray head (27) is sequentially communicated with the secondary granulator (26), the cooler (13) and the screening machine (18), the slurry melting mechanism comprises a support plate (6), a push-pull plate (5) which is positioned at the upper part of the support plate (6) and moves back and forth along the support plate (6), a plurality of hot melting bins which are positioned at the upper part of the push-pull plate (5), a first feed inlet (2) which is positioned at the top of each hot melting bin, a stirring mechanism which is positioned in each hot melting bin, a plurality of first through holes (4) which are positioned on the push-pull plate (5) and second through holes (7) which are positioned on the support plate (6) and are staggered with the first through holes (4), one side of the push-pull plate (5) extends to the outer side of the hot melting bins, and each hot melting bin comprises an outer shell (37), an inner shell (36) positioned in the outer shell (37) and an electric heating pipe (35) positioned between the outer shell (37) and the inner shell (36).

2. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 1, wherein: rabbling mechanism is including being located agitator disk (31) in the hot melt storehouse, be located telescopic link (34) on agitator disk (31) upper portion and being located first motor (1) of telescopic link (34) tip, telescopic link (34) tip extends to the outside in hot melt storehouse, the hot melt storehouse is outside be provided with rotary drive mechanism on telescopic link (34).

3. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 2, wherein: the rotary driving mechanism comprises a driven gear (40) positioned on the telescopic rod (34), a driving gear (39) meshed with the driven gear (40) and a second motor (38) driving the driving gear (39) to rotate, and the second motor (38) is positioned at the top of the hot melting bin.

4. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 2, wherein: and a protective hose (33) is arranged on the telescopic rod (34) in the hot melting bin.

5. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 2, wherein: the stirring plate (31) is provided with a plurality of third through holes (32).

6. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 2, wherein: and a brush (3) is arranged on the periphery of the stirring disc (31).

7. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 1, wherein: and a temperature sensor is arranged in each hot melting bin.

8. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 1, wherein: the bottom of backup pad (6) is provided with infundibulate heat preservation storehouse (8), heat preservation storehouse (8) with discharging pipe (11) intercommunication.

9. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 1, wherein: a discharge valve (9), a flowmeter (10) and a metering plunger pump (12) are arranged on the discharge pipe (11); the guniting spray head (27) is also communicated with an air compressor (30) through a vent pipe (28), and the vent pipe (28) is provided with an adjusting valve (29).

10. The combined guniting and hot-melting granulation device for producing and processing compound fertilizer granules as claimed in claim 1, wherein: the granulator (26) and the cooler (13) are communicated with each other through a first discharging pipe (25), the screening machine (18) is provided with a material conveyor (22) above, the cooler (13) is communicated with the material conveyor (22) through a second discharging pipe (23), the second discharging pipe (23) is located in the middle of the upper portion of the material conveyor (22), a spiral shaft (21) is horizontally arranged in the material conveyor (22), a first spiral (15) and a second spiral (19) are symmetrically arranged on two sides of the spiral shaft (21) below the second discharging pipe (23), the spiral shaft (21) extends to the outer side of the material conveyor (22), a third motor (20) is arranged on the spiral shaft (21) on the outer side of the material conveyor (22), a second feeding hole (17) is arranged on the upper portion of the screening machine (18), and a plurality of third discharging pipes (25) located above the second feeding hole (17) are arranged at the bottom of the material conveyor (22) 16) The first discharging pipe (25) and the second discharging pipe (23) are respectively provided with a first switch (24) and a second switch (14).

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