CN211329290U - Granulation system - Google Patents
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- CN211329290U CN211329290U CN201920176892.9U CN201920176892U CN211329290U CN 211329290 U CN211329290 U CN 211329290U CN 201920176892 U CN201920176892 U CN 201920176892U CN 211329290 U CN211329290 U CN 211329290U
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Abstract
The utility model provides a granulation system, including discharging device and conveyer, discharging device is located conveyer's top, discharging device is used for making the blowout of melting ground paste in order to form the dropwise ground paste and fall into on the conveyer, conveyer is used for making the dropwise ground paste cool off in conveyer's removal in-process in order to form granular fertilizer, wherein, the speed of discharging device blowout dropwise ground paste is Y ═ KX with the relation of the speed that the dropwise ground paste moved on conveyer, wherein, X stands for the speed that the dropwise ground paste moved on conveyer, Y stands for the speed of discharging device blowout dropwise ground paste, K stands for production speed proportionality coefficient, K's value is 20-1200. The speed of the discharging device for spraying the dropwise slurry and the speed of the dropwise slurry moving on the conveying device meet the relational expression, so that the use efficiency of the conveying device and the discharging device is maximized, and the production speed and quality of the granular fertilizer are greatly improved.
Description
Technical Field
The utility model belongs to the technical field of granulated fertilizer production, concretely relates to granulation system.
Background
The compound fertilizer is the most widely used fertilizer in China at present. The main production process flow of the compound fertilizer comprises raw material proportioning, mixing and stirring, caking and crushing, material granulation, multi-stage screening and finished product packaging. It follows that material granulation plays an important role in the production of compound fertilizers. Therefore, increasing the speed of material granulation is an important step in increasing the production rate of fertilizer granules.
In the prior art, patent No. CN201520381710.3 discloses a conveyor belt device for cooling bio-fertilizer, which comprises a conveyor belt bracket, a lower roller, a conveyor belt body, an upper roller, a slide way, a fixing device, a protection net, an air guide opening, a cold air device, a support plate and a connecting rod. The conveying belt support is provided with a slide way, a lower roller and an upper roller, a protection net is arranged through the slide way, two ends of the protection net are provided with a connecting rod and a fixing device, the lower roller and the upper roller are externally provided with a conveying belt body, the conveying belt body is of a mesh structure, a supporting plate is arranged between the conveying belt support, a cold air device is arranged on the supporting plate, and an air guide opening is formed in the upper portion of the cold. Adopt from supreme air supply mode down, not only the cooling effect is good, is difficult for blowing off the fertilizer granule moreover, has improved production efficiency. However, the efficiency of the conveyor belt is not maximized, and thus there is still a lack of a pelletizing system that maximizes the efficiency of the conveyor belt.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a granulation system, through in the process of the ground paste ejection of compact, through making the relation of the speed that discharging device spouts the drip ground paste with the speed that the drip ground paste moved on the conveyer reach Y ═ KX, the value of K is 20-1200 to make conveyer and discharging device's availability factor reach the maximize, greatly improved granular fertilizer's production speed and quality.
The utility model provides a first aspect of a granulating system, which comprises a discharging device and a conveying device, the discharging device is positioned above the conveying device and is used for ejecting the molten slurry to form drop-shaped slurry and dropping the drop-shaped slurry onto the conveying device, the conveyor is used for cooling the drop-shaped slurry during the movement of the conveyor to form granular fertilizer, wherein the relationship between the speed of the discharging device for discharging the droplet-shaped slurry and the speed of the droplet-shaped slurry moving on the conveying device is Y-KX, wherein X represents the moving speed of the droplet-shaped slurry on the conveying device, and the unit is meter per second, Y represents the speed of the discharging device for spraying the droplet-shaped slurry, and the unit is droplet per second, K represents the production speed proportionality coefficient, and the unit is droplet per second, and the value of K is 20-1200.
The utility model discloses the in-process of the ground paste ejection of compact is through making discharging device blowout the speed of dropwise form ground paste with the dropwise form ground paste is in the relation of the speed that conveyer goes up to remove reaches Y ═ KX, the value of K is 20-1200 to make conveyer and discharging device's availability factor reach the maximize, greatly improved granular fertilizer's production speed and quality.
The granulation system further comprises a speed acquisition device of the droplet-shaped slurry and a control device, wherein the speed acquisition device of the droplet-shaped slurry is used for acquiring speed information of the droplet-shaped slurry, the control device is used for controlling the moving speed of the conveying device according to the speed information of the droplet-shaped slurry, so that the moving speed of the conveying device and the speed of the droplet-shaped slurry meet a relation formula Y-KX, and the value of K is 20-1200.
The granulation system further comprises a speed acquisition device of the conveying device, the speed acquisition device of the conveying device is used for acquiring the speed information of the movement of the conveying device, the control device is used for controlling the speed of the dropwise slurry according to the speed information of the conveying device, so that the speed of the movement of the conveying device and the speed of the dropwise slurry meet the relation of Y-KX, and the value of K is 20-1200.
The conveying device is internally provided with a cooling device, the cooling device comprises a first cooling area and a second cooling area, the first cooling area is close to the discharging device, the second cooling area is far away from the discharging device, and the temperature of the first cooling area is higher than that of the second cooling area.
The discharging device comprises a discharging pipe and a discharging ring arranged outside the discharging pipe, a plurality of nozzles are arranged on the discharging pipe, a plurality of discharging holes are formed in the discharging ring, and the discharging ring can rotate around the discharging pipe; the molten slurry is ejected from the nozzle and cut by the discharge port on the discharge ring rotating around the discharge pipe to form a droplet-shaped slurry.
Wherein the plurality of nozzles are arranged in the axial direction of the tapping pipe.
The array discharge hole is formed in the discharge ring and comprises a plurality of first discharge hole groups arranged in the axial direction of the discharge ring and a plurality of second discharge hole groups arranged in the radial direction of the discharge ring. The first discharge hole group and the second discharge hole group respectively comprise a plurality of discharge holes.
Wherein the diameter of the discharge hole is 0.5-20 mm.
Wherein the vertical distance between the discharging device and the conveying device is 0.5-100 mm.
Wherein the length of the conveying device is 5-100 m.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be described below.
Fig. 1 is a schematic structural diagram of a granulation system in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a discharging device in an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along the line A-A of the dispensing device of FIG. 2;
fig. 4 is a process flow diagram of a method for increasing the production rate of granulated fertilizer according to an embodiment of the present invention.
Detailed Description
The following is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention provides a method for increasing a production speed of a granulated fertilizer 4, including step S100, step S200, and step S300. :
in step S100, molten slurry 31 is provided.
Step S200, placing the molten slurry 31 in a discharging device 1.
Step S100, spraying the molten slurry 31 from the discharging device 1 to form a droplet-shaped slurry 3, wherein the droplet-shaped slurry 3 falls onto a conveying device 2, and the droplet-shaped slurry 3 is cooled during the movement of the conveying device 2 to form a granular fertilizer 4; wherein a relationship between a speed at which the droplet-shaped slurry 3 is ejected by the discharging device 1 and a speed at which the droplet-shaped slurry 3 moves on the conveyor 2 is Y ═ KX, where X represents a speed at which the droplet-shaped slurry 3 moves on the conveyor 2 in meters per second, Y represents a speed at which the droplet-shaped slurry 3 is ejected by the discharging device 1 in droplets per second, K represents a production speed proportional coefficient in droplets per second, and a value of K is 20 to 1200.
During the distribution of the granulated fertilizer 4, the molten slurry 31 is ejected from the discharging device 1 and forms a slurry drop 3, and then the slurry drop 3 falls onto the conveyor 2, i.e. the conveyor belt in the conveyor 2, which transports the slurry drop 3 to the next unit during the movement, and the slurry drop 3 cools and forms the granulated fertilizer 4 during the transportation. If the speed of the discharging device 1 for spraying the droplet-shaped slurry 3 is too low and the speed of the droplet-shaped slurry 3 moving on the conveyer 2 is too high, the distance between the droplet-shaped slurries 3 is large, the number of the droplet-shaped slurries 3 on the conveyer belt in the same area is small, and the utilization rate of the conveyer 2 is low. And if the speed of movement of the slurry droplets 3 on the conveyor 2 is above a certain threshold value, the slurry droplets 3 are not yet completely formed into granulated fertilizer 4 and are transported to the next unit, which is not allowed during production.
On the contrary, if the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 is too high and the speed of the droplet-shaped slurry 3 moving on the conveyor 2 is too low, the granular fertilizer 4 transported in the same time is reduced, and the production speed of the granular fertilizer 4 is greatly reduced. And if the speed of the slurry drops 3 moving on the conveyor 2 is less than a certain critical value, the slurry drops 3 will be collected together to form fertilizer granules with larger particle size, which is not allowed in the production process.
As can be seen from the above, the speed at which the discharging device 1 discharges the droplet-shaped slurry 3 and the speed at which the droplet-shaped slurry 3 moves on the conveyor 2 need to satisfy the above-described relational expression, and when the speed at which the discharging device 1 discharges the droplet-shaped slurry 3 increases, the speed at which the droplet-shaped slurry 3 moves on the conveyor 2 needs to increase, but the amount of increase does not exceed a critical value. When the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 is reduced, the speed of the droplet-shaped slurry 3 moving on the conveyor 2 also needs to be reduced, but the reduction amount cannot exceed a critical value. Therefore, there should be a reasonable relationship between the speed of the droplet slurry 3 moving on the conveyer 2 and the speed of the discharging device 1 ejecting the droplet slurry 3.
Therefore, the embodiment of the present invention provides a method for increasing the production speed of granular fertilizer 4, so that the discharging device 1 ejects the speed of the droplet-shaped slurry 3 and the speed of the droplet-shaped slurry 3 moving on the conveying device 2 are in a relationship of Y ═ KX, the value of K is 20-1200, as long as the two satisfy the above relationship, in the distributing process of fertilizer granule production, the number of the droplet-shaped slurry 3 on the conveying device 2 with the same area is larger, the number of the granular fertilizer 4 produced in the same time is larger, and the droplet-shaped slurry 3 is made to completely form the granular fertilizer 4, and meanwhile, the phenomenon that a plurality of droplet-shaped slurries 3 are combined together is also avoided. Therefore adopt the embodiment of the utility model provides a method has improved conveyer 2 and discharging device 1's efficiency, has improved granular fertilizer 4's quality and production speed.
In the preferred embodiment of the present invention, the speed of the movement of the slurry drops 3 on the conveyor 2 is 0.1-1 m/s.
In the preferred embodiment of the present invention, the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 is 20 to 120 drops/s.
In a preferred embodiment of the present invention, the method for increasing the production speed of the granulated fertilizer 4 further comprises:
acquiring speed information of the discharging device 1 for spraying the dropwise slurry 3;
controlling the moving speed of the conveyer 2 according to the speed information of the discharging device 1 for discharging the droplet-shaped slurry 3, so that the relation between the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 and the speed of the droplet-shaped slurry 3 moving on the conveyer 2 is Y ═ KX, and the value of K is 20-1200.
In an embodiment of the present invention, the speed information of the discharging device 1 ejecting the droplet-shaped slurry 3 may be obtained first, and then the speed information of the movement of the conveying device 2 may be obtained. The speed information of the discharge device 1 for discharging the droplet-shaped slurry 3 includes the speed of the discharge device 1 for discharging the droplet-shaped slurry 3, and the speed information of the movement of the conveyor 2 includes the speed of the movement of the conveyor 2. Then, it is determined whether the speed at which the discharging device 1 discharges the droplet-shaped slurry 3 and the speed at which the conveyor 2 moves satisfy the above-described relationship, and if not, the speed at which the conveyor 2 moves is controlled so that the relationship between the speed at which the discharging device 1 discharges the droplet-shaped slurry 3 and the speed at which the droplet-shaped slurry 3 moves on the conveyor 2 is Y ═ KX, and the value of K is 20 to 1200.
In a preferred embodiment of the present invention, the method for increasing the production speed of the granulated fertilizer 4 further comprises:
information on the speed of movement on the conveyor 2 is obtained,
controlling the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 according to the speed information of the movement on the conveyor 2, so that the relation between the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 and the speed of the droplet-shaped slurry 3 moving on the conveyor 2 is Y ═ KX, and the value of K is 20-1200.
In another embodiment of the present invention, the speed information of the movement of the conveyor 2 can be obtained first, and then the speed information of the droplet-shaped slurry 3 ejected from the discharge device 1 can be obtained. And then, determining whether the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 and the moving speed of the conveyor 2 satisfy the above relationship, and if not, controlling the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 so that the relationship between the speed of the discharging device 1 for discharging the droplet-shaped slurry 3 and the moving speed of the droplet-shaped slurry 3 on the conveyor 2 is Y-KX, and the value of K is 20 to 1200.
In the preferred embodiment of the present invention, the obtaining of the speed information of the discharging device 1 ejecting the droplet-shaped slurry 3 includes:
obtaining the information of the feeding speed of the molten slurry 31 entering the discharging device 1,
and obtaining the speed information of the discharging device 1 for ejecting the dropwise slurry 3 according to the feeding speed information and the parameter information of the discharging device 1.
In the embodiment of the utility model, discharging device 1 blowout the acquisition of the speed information of dropwise ground paste 3 needs acquireing earlier molten ground paste 31 gets into feeding speed information during discharging device 1 with discharging device 1's parameter information, then according to feeding speed information and discharging device 1's parameter information obtains discharging device 1 blowout the speed information of dropwise ground paste 3. The feed rate information of the molten slurry 31 entering the discharge apparatus 1 includes the feed rate of the molten slurry 31 entering the discharge apparatus 1.
Referring to fig. 1 to 3, a granulation system provided by an embodiment of the present invention includes a discharging device 1 and a conveying device 2, the discharging device 1 is located above the conveying device 2, the discharging device 1 is configured to eject the molten slurry 31 to form a droplet-shaped slurry 3 and drop the droplet-shaped slurry onto the conveying device 2, the conveying device 2 is configured to cool the droplet-shaped slurry 3 during the movement of the conveying device 2 to form a granular fertilizer 4, wherein a relationship between a speed at which the discharging device 1 ejects the droplet-shaped slurry 3 and a speed at which the droplet-shaped slurry 3 moves on the conveying device 2 is Y ═ KX, where X represents a speed at which the droplet-shaped slurry 3 moves on the conveying device 2 and is expressed in meters per second, Y represents a speed at which the discharging device 1 ejects the droplet-shaped slurry 3 and is expressed in droplets per second, k represents a production rate scaling factor in drops per second and has a value of 20-1200. Preferably, said value of K is between 50 and 1000. More preferably, the value of K is 200-800.
The embodiment of the utility model provides a pair of granulation system, at the in-process of the ground paste ejection of compact, through making discharging device 1 blowout the speed of dropwise ground paste 3 with dropwise ground paste 3 is in the relation of the speed of moving on conveyer 2 reaches Y ═ 20-1200X to make conveyer 2 and discharging device 1's availability factor reach the maximize, greatly improved granular fertilizer 4's production speed.
In the preferred embodiment of the present invention, the granulation system includes a speed obtaining device and a control device for the droplet-shaped slurry 3, the speed obtaining device for the droplet-shaped slurry 3 is used to obtain the speed information of the droplet-shaped slurry 3, the control device is used to control the moving speed of the conveyer 2 according to the speed information of the droplet-shaped slurry 3, so that the speed of the conveyer 2 moving and the speed of the droplet-shaped slurry 3 satisfy the relationship of Y ═ KX, and the value of K is 20 to 1200.
The utility model discloses a granulation system includes speed acquisition unit and the control unit of dropwise form ground paste 3, the speed acquisition unit of dropwise form ground paste 3 specifically is the speed acquisition device of dropwise form ground paste 3, the speed acquisition device of dropwise form ground paste 3 is used for acquireing the speed information of dropwise form ground paste 3. The control means is specifically a control device configured to control the moving speed of the conveyor 2 based on the speed information of the droplet-shaped slurry 3 so that the speed at which the conveyor 2 moves and the speed of the droplet-shaped slurry 3 satisfy the relationship Y ═ KX, and the value of K is 20 to 1200.
In the preferred embodiment of the present invention, the granulation system further includes a speed obtaining device of the conveying device 2, the speed obtaining device of the conveying device 2 is used for obtaining the speed information of the movement of the conveying device 2, the control device is used for controlling the speed of the droplet-shaped slurry 3 according to the speed information of the conveying device 2, so that the speed of the movement of the conveying device 2 and the speed of the droplet-shaped slurry 3 satisfy the relationship Y ═ KX, and the value of K is 20 to 1200.
The utility model discloses a granulation system still includes conveyer 2's speed acquisition unit, specifically is conveyer 2's speed acquisition device, conveyer 2's speed acquisition device is used for acquireing the speed information that conveyer 2 removed. The control device is configured to control the speed of the droplet-shaped slurry 3 according to the speed information of the conveyor 2 so that the speed of the conveyor 2 and the speed of the droplet-shaped slurry 3 satisfy a relational expression Y ═ KX, and the value of K is 20 to 1200.
The utility model discloses in the preferred embodiment, still be equipped with cooling device in the conveyer 2, cooling device includes first cooling zone and second cooling zone, first cooling zone is close to discharging device 1, the second cooling zone is kept away from discharging device 1, the temperature in first cooling zone is greater than the temperature in second cooling zone.
The sectional type cooling device can better cool the drop-shaped slurry 3 on the conveying device 2 with limited length, so that the drop-shaped slurry 3 is cooled more uniformly, the phenomenon of quenching the drop-shaped slurry 3 is avoided, the density distribution of the granular fertilizer 4 is uniform finally, and the hardening phenomenon is avoided.
Referring to fig. 2 to 3, in a preferred embodiment of the present invention, the discharging device 1 includes a discharging pipe 11 and a discharging ring 12 disposed outside the discharging pipe 11, the discharging pipe 11 is provided with a plurality of nozzles 111, the discharging ring 12 is provided with a plurality of discharging holes 121, and the discharging ring 12 can rotate around the discharging pipe 11; the molten slurry 31 is ejected from the nozzle 111 and cut by the discharge opening 121 on the discharge ring 12 rotating around the discharge pipe 11 to form a droplet-shaped slurry 3.
The embodiment of the utility model provides an in be equipped with a nozzle group on discharging pipe 11, nozzle group includes a plurality of nozzles 111, a plurality of nozzles 111 are followed discharging pipe 11's axial setting forms a nozzle 111. And the discharging ring 12 is provided with an array discharging port 121, and the array discharging port 121 comprises a plurality of first discharging port groups arranged along the axial direction of the discharging ring 12 and a plurality of second discharging port groups arranged along the radial direction of the discharging ring 12. The first discharge hole group and the second discharge hole group respectively comprise a plurality of discharge holes 121.
When the discharge ring 12 rotates, the utility model discloses every first discharge gate group of definition can cut once from nozzle 111 spun column ground paste to cut the column ground paste into the dropwise ground paste 3 in the implementation, the aforesaid is a cutting definition for producing once dropwise ground paste 3. The utility model discloses can test and produce several times dribble form ground paste 3 in unit interval. The speed of discharging the droplet-shaped slurry 3 from the discharging device 1 may be defined as several times per second of the droplet-shaped slurry 3.
In the preferred embodiment of the present invention, the parameter information of the discharging device 1 includes the number of the discharging holes 121, the sector angle of the discharging hole 121 and the rotating speed of the discharging ring 12.
In the embodiment of the present invention, the parameter information of the discharging device 1 includes the number of the discharging holes 121, the sector angle of the discharging ring 12 occupied by the discharging holes 121, the arrangement mode of the discharging holes 121 and the rotating speed of the discharging ring 12. Preferably, the parameter information of the discharging device 1 further includes the number of the nozzles 111 and the arrangement of the nozzles 111. The parameter information can calculate the number of the discharge ports 121 capable of cutting the columnar slurry in unit time, that is, the number of drops of the dropwise slurry 3 in unit time, and then the speed of the dropwise slurry 3 ejected by the discharge device 1 can be calculated according to the feeding speed information when the molten slurry 31 enters the discharge device 1.
In the preferred embodiment of the present invention, the rotation speed of the discharging ring 12 is 0.5-5 r/s.
In the preferred embodiment of the present invention, the diameter of the discharge hole 121 is 0.5-20 mm.
In the preferred embodiment of the present invention, the vertical distance between the discharging device 1 and the conveying device 2 is 0.5-100 mm.
In the preferred embodiment of the present invention, the length of the conveyor 2 is 5-100 m.
In the embodiment of the utility model provides an in, above-mentioned parameter not only can influence the production speed of granulated fertilizer 4, still can influence the quality of granulated fertilizer 4.
The utility model discloses still provide a plurality of concrete embodiments, please refer to table 1, table 1 is granular fertilizer's cloth parameter table. As can be seen from table 1, when the speed of the discharging device 1 discharging the droplet-shaped slurry 3 increases, the speed of the droplet-shaped slurry 3 moving on the conveyer 2 also increases, and the speed of the conveyer 2 moving and the speed of the droplet-shaped slurry 3 satisfy the relation Y ═ KX, and the value of K is 20 to 1200, which is in accordance with the relation provided by the embodiments of the present invention.
Table 1 table of distribution parameters of granulated fertilizer.
The foregoing detailed description has provided the embodiments of the present invention, and the principles and embodiments of the present invention are described and illustrated herein, which are merely provided to assist in understanding the methods and their core concepts of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. A granulation system is characterized by comprising a discharging device and a conveying device, wherein the discharging device is positioned above the conveying device, the discharging device is used for enabling molten slurry to be sprayed out to form dropwise slurry and fall onto the conveying device, the conveying device is used for enabling the dropwise slurry to be cooled in the moving process of the conveying device to form granular fertilizer, the granulation system further comprises a speed obtaining device and a control device of the dropwise slurry, the speed obtaining device of the dropwise slurry is used for obtaining the speed information of the dropwise slurry, the control device is used for controlling the moving speed of the conveying device according to the speed information of the dropwise slurry, a cooling device is further arranged in the conveying device and comprises a first cooling area and a second cooling area, the first cooling area is close to the discharging device, the second cooling area is far away from the discharging device, and the temperature of the first cooling area is higher than that of the second cooling area.
2. The granulation system as claimed in claim 1, further comprising a speed acquisition device of the conveyor for acquiring information on the speed at which the conveyor moves, and the control device for controlling the speed of the slurry droplets in accordance with the information on the speed of the conveyor.
3. The pelletizing system of claim 1, characterized in that the discharge device includes a discharge tube with a plurality of nozzles and a discharge ring with a plurality of discharge ports disposed outside the discharge tube, the discharge ring being rotatable about the discharge tube; the molten slurry is ejected from the nozzle and cut by the discharge port on the discharge ring rotating around the discharge pipe to form a droplet-shaped slurry.
4. The pelletizing system of claim 3, wherein the plurality of nozzles are disposed axially of the discharge tube.
5. The granulation system as claimed in claim 3, wherein said discharge ports are arranged in an array on said discharge ring, said discharge ports arranged in an array comprise a plurality of first discharge port groups arranged in an axial direction of said discharge ring, and a plurality of second discharge port groups arranged in a radial direction of said discharge ring, said first discharge port group and said second discharge port group respectively comprise a plurality of said discharge ports.
6. Granulation system as claimed in claim 3, characterized in that the discharge opening has a diameter of 0.5-20 mm.
7. Granulation system as claimed in claim 1, characterized in that the vertical distance between the discharge means and the conveying means is between 0.5 and 100 mm.
8. Pelletizing system according to claim 1, characterized in that the length of the conveying device is 5-100 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920176892.9U CN211329290U (en) | 2019-01-30 | 2019-01-30 | Granulation system |
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| CN201920176892.9U CN211329290U (en) | 2019-01-30 | 2019-01-30 | Granulation system |
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| CN211329290U true CN211329290U (en) | 2020-08-25 |
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| CN201920176892.9U Active CN211329290U (en) | 2019-01-30 | 2019-01-30 | Granulation system |
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