Cylinder granulator

Abstract

The utility model discloses a cylinder granulator which comprises a cylinder granulation part, a material mixing part and a screening part, the cylinder granulation part comprises a first rotary driving part, a second rotary driving part, a cylinder and a spiral plate, the cylinder is downwards inclined and is connected with the driving end of the first rotary driving part, and the spiral plate is connected with the driving end of the second rotary driving part, is inserted into the cylinder and is propped against the inner wall of the lower half part of the cylinder. According to the cylinder granulating machine provided by the utility model, materials and water are fed into the cylinder granulating part through the material mixing part, are mixed and granulated under the rotation of the cylinder of the cylinder granulating part, and are matched with the spiral plate to control the axial propelling speed of the granules in the cylinder, so that the pelletizing diameter and propelling speed of the materials are conveniently controlled, and then the materials are butted with the screening part; finished particle materials are directly screened at the discharging end, the finished particle materials are continuously produced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of granulation technology, specifically to a cylindrical granulator. Background Technology

[0002] Granulation equipment, such as disc granulators, is used in the manufacture of phosphogypsum. Chinese Utility Model Patent 202123064123.6 discloses a disc granulator for phosphogypsum pretreatment, which includes a support base. First support frames are installed at both ends of the upper surface of the support base. A support plate is installed between the two first support frames. A motor is installed on the upper surface of the support plate. A disc is installed at one end of the motor. A protective component is provided above the disc.

[0003] In the aforementioned existing technology, the use of a disc granulator in granulation is an intermittent process, requiring further screening after granulation, resulting in discontinuous production and low efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a cylindrical granulator to solve the technical problems of the intermittent production process of the existing disc granulator, which requires screening after granulation, resulting in discontinuous production and low efficiency.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a cylindrical granulator, comprising:

[0007] The cylindrical granulation unit includes a first rotary drive, a second rotary drive, a cylinder, and a spiral plate. The cylinder is inclined downward and connected to the drive end of the first rotary drive. The spiral plate is connected to the drive end of the second rotary drive and inserted into the cylinder, abutting against the lower half of the inner wall of the cylinder.

[0008] A mixing section, the discharge end of which extends to the downwardly inclined starting end of the cylinder, is used for metered water and material supply; and

[0009] A screening section, located at the downward inclined end of the cylinder, is used to screen materials into spheres.

[0010] In some embodiments, the screening section includes a plurality of mesh screen cylinders, and the plurality of mesh screen cylinders have different apertures, wherein the plurality of mesh screen cylinders are distributed radially along the mesh screen cylinder or distributed axially along the mesh screen cylinder.

[0011] In some embodiments, the screening section further includes a guide seat, which is provided with a plurality of partitions and divides into a plurality of guide channels. The plurality of guide channels are respectively provided at the discharge end of the mesh screen cylinder to separate the ball-shaped materials of different diameters.

[0012] In some embodiments, when multiple mesh screen cylinders are radially distributed along the mesh screen cylinder, the multiple mesh screen cylinders are concentrically fitted from the inside to the outside and are all connected to the downwardly inclined end of the cylinder. The innermost mesh screen cylinder has the same inner diameter as the cylinder, and the length and aperture of the mesh screen cylinder decrease sequentially from the inside to the outside. The partitions abut against the bottom of the mesh screen cylinder at the end away from the cylinder, one by one.

[0013] In some embodiments, a scraper is further included, which extends axially through the cylinder and is elastically fitted to the inner wall of the cylinder.

[0014] In some embodiments, the system further includes a tilt adjustment base, which includes a seat, a hydraulic push rod, a mounting platform, and a support platform. The first rotary drive is mounted on the top of the mounting platform, and the second rotary drive is mounted on the top of the support platform. There are three seats and two hydraulic push rods. The bottom end of one hydraulic push rod is hinged to the leftmost seat, and the bottom end of the other hydraulic push rod is hinged to the rightmost seat. The bottom ends of the mounting platform are respectively hinged to the telescopic end of the left hydraulic push rod and the middle seat, and the telescopic end of the right hydraulic push rod is hinged to the support platform.

[0015] In some embodiments, a hot air drying assembly is also included, which includes a hot air blower and an air duct, one end of which is connected to the air outlet of the hot air blower and the other end extends into the interior of the mesh screen cylinder for hot air drying during sieving.

[0016] In some embodiments, the first rotary drive includes a first drive motor, an external gear ring, a base, and a transmission gear set. The external gear ring is provided on the outside of the cylinder. The output shaft of the first drive motor is connected to the input end of the transmission gear set. The output end of the transmission gear set meshes with the external gear ring. A guide ring is also provided on the outside of the cylinder. A support roller is rotatably connected to the base. The support roller is slidably connected to the guide ring to support its inclined tilt and guide its rotation.

[0017] In some embodiments, the transmission gear set includes a plurality of sequentially meshing spur gears, one end of which is connected to the output shaft of the first transmission motor, and the other end of which meshes with the external gear ring.

[0018] In some embodiments, the mixing unit includes a water supply component and a powder supply component, and the discharge ends of both the water supply component and the powder supply component are inserted into the cylinder; the water supply component includes a water supply mechanism and a spray pipe, the water supply mechanism is connected to the spray pipe and is used for water supply; a plurality of nozzles are linearly distributed at the bottom of the spray pipe, the spray pipe extends into the downwardly inclined starting end of the cylinder, and the spray volume of the nozzles decreases sequentially along the inclined direction of the cylinder, dividing the cylinder into a granulation zone, an auxiliary molding zone, a molding zone and a shaping and drying zone from the downwardly inclined starting end to the inclined bottom end, wherein the water supply volumes of the granulation zone, the auxiliary molding zone, the molding zone and the shaping and drying zone are 80-99%, 1-20%, 0% and 0%, respectively.

[0019] Compared with the prior art, the cylindrical granulator provided by this utility model feeds materials and water into the cylindrical granulation section through the mixing section. The materials are mixed under the rotation of the cylinder in the cylindrical granulation section and granulated. The spiral plate controls the axial propulsion speed of the granules in the cylinder, making it easier to control the granulation diameter and propulsion speed. Then, it connects to the screening section to directly screen the finished granules at the discharge end, producing finished granules without interruption and improving production efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the cylindrical granulator provided in this embodiment of the utility model;

[0021] Figure 2 This is a wireframe diagram of the cylindrical granulator provided in this embodiment of the utility model;

[0022] Figure 3 This is a three-dimensional view of the mesh screen cylinder provided in this embodiment of the utility model;

[0023] Figure 4 This is a three-dimensional view of the transmission gear assembly provided in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of water supply distribution provided in another embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Mixing section; 11. Water supply assembly; 12. Powder supply assembly; 111. Water tank; 112. Pump body; 113. Spray pipe; 121. Hopper; 122. Screw conveyor pump;

[0027] 2. Cylindrical granulation section; 21. Cylindrical section; 22. Spiral plate; 201. Mixing zone; 2201. Fixing frame; 2101. Granulation zone; 2102. Auxiliary forming zone; 2103. Forming zone; 2104. Shaping and drying zone;

[0028] 3. Screening section; 31. Mesh screen cylinder; 32. Material guide seat; 321. Partition plate; 322. Baffle plate; 301. Flow channel;

[0029] 4. Scraper; 401. Bracket;

[0030] 5. First rotary drive component; 51. First transmission motor; 52. External gear ring; 53. Transmission gear set; 54. Guide ring; 55. Support roller; 56. Base; 531. Spur gear;

[0031] 6. Second rotary drive component; 61. Second transmission motor; 62. Drive wheel; 63. Belt; 64. Transmission wheel;

[0032] 7. Inclination adjustment base; 71. Base body; 72. Hydraulic push rod; 73. Mounting platform; 74. Support platform;

[0033] 8. Hot air drying assembly; 81. Hot air blower; 82. Exhaust duct. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0035] To address the technical problems of intermittent production processes and the need for subsequent screening in existing disc granulation machines, which result in discontinuous production and low efficiency, this invention provides a cylindrical granulator that enables continuous granulation and screening.

[0036] It should be noted that the cylindrical granulator described in this utility model is used for, but not limited to, the production of phosphogypsum. For ease of explanation, this utility model only uses the application of the cylindrical granulator to phosphogypsum granulation as an example. The principle of the cylindrical granulator in other types of equipment is essentially the same as that in phosphogypsum granulation, and will not be elaborated here.

[0037] Please see Figure 1-5 This utility model provides a cylindrical granulator, including a mixing section 1, a cylindrical granulation section 2, and a screening section 3.

[0038] The mixing section 1 introduces materials and water into the cylindrical granulation section 2 at a certain ratio for mixing. The discharge end of the mixing section 1 extends to the downward-sloping starting end of the cylindrical granulation section 21 for quantitative water and material supply.

[0039] The cylindrical granulation section 2 includes a first rotary drive 5, a second rotary drive 6, a cylinder 21, and a spiral plate 22. The cylinder 21 is inclined downwards and connected to the drive end of the first rotary drive 5, which drives the cylinder 21 to rotate. The discharge end of the mixing section 1 extends to the starting end of the downward inclination of the cylinder 21, i.e., the left end of the cylinder 21. The part near the mixing section 1 is the mixing zone 201, which receives materials and water and mixes them during rotation. The spiral plate 22 is connected to the drive end of the second rotary drive 6 and is inserted into the cylinder 21, abutting against the lower half of the inner wall of the cylinder 21. It is used to control the axial propulsion speed of the granules in the cylinder 21, making it easier to control the spherical diameter and propulsion speed of the materials, promoting effective mixing of materials and water, and granulation. The second rotary drive 6 includes a second transmission motor 61, a drive wheel 62, a belt 63, and a transmission wheel 64. The spiral plate 22 has a built-in fixing frame. 2201, the end of the fixed frame 2201 extends with a connecting plate, which is connected to the transmission wheel 64. The driving end of the second transmission motor 61 is connected to the driving wheel 62, and the outer side of the driving wheel 62 and the transmission wheel 64 are connected to the belt 63 for driving the spiral plate 22 to rotate. The first rotating driving component 5 on the cylinder 21 includes a first transmission motor 51, an external gear ring 52 and a transmission gear set 53. The outer side of the cylinder 21 is provided with an external gear ring 52, which meshes with the transmission gear set 53 on the output shaft of the transmission motor 51 to drive the rotation. The outer side of the cylinder 21 is also provided with a guide ring 54, which is slidably connected to the support roller 55 rotatably mounted on the external base 56 to support its inclined tilt and guide its rotation. Through the rolling of the cylinder 21, the plate surface buffer of the spiral plate 22 and the rotation guidance in the spiral direction, the gypsum powder is caused to roll relatively on the inner wall of the cylinder 21 to form spherical particles. Finally, the spherical particles roll off from the lower end of the cylinder 21.

[0040] The screening section 3 is located at the downward inclined end of the cylinder 21 and is used to screen the material into spheres. That is, the material is mixed and granulated in the cylinder 21 and discharged from the downward inclined right end into the screening section 3 for screening and classification. This allows the finished granules of different specifications to be screened out and put into the silo. Screening and granulation are integrated into one, avoiding the need for additional screening equipment and improving processing efficiency.

[0041] In one embodiment, in order to connect the cylinder 21 for screening, the screening section 3 includes a mesh screen cylinder 31. A plurality of mesh screen cylinders 31 are distributed along the axial direction of the mesh screen cylinder 31. The layout of the mesh screen cylinders 31 is not shown in the figure. Several mesh screen cylinders 31 are coaxially installed on the downward inclined end of the cylinder 21, and the screen aperture of the mesh screen cylinder 31 increases sequentially from the area near the cylinder 21 to the area away from the cylinder 21. The mesh screen cylinders 31 are connected to the downward inclined end of the cylinder 21 and are inclined to extend, so that the spherical material rolls down along the inclined angle and passes through the screen apertures of different apertures in sequence, thereby achieving the screening effect.

[0042] Understandably, the mesh screen cylinder 31 is fixedly connected to the cylinder 21. As the cylinder 21 rotates, it drives the mesh screen cylinder 31 to rotate, forming a rolling screening effect and improving screening efficiency.

[0043] Furthermore, in order to separate and discharge finished granular materials of different specifications after screening, the screening unit 3 also includes a guide seat 32, which is provided with a number of partitions 321 and separates a number of guide channels 301. The number of guide channels 301 are respectively located at the bottom of different aperture ranges of the mesh screen cylinder 31 to separate the feeding of spherical materials of different diameters.

[0044] In another embodiment, for connecting the cylinder 21 for screening, see [reference needed]. Figure 4 Multiple mesh screen cylinders 31 can be radially distributed along the mesh screen cylinder 31, and the multiple mesh screen cylinders 31 are concentrically assembled from the inside to the outside, see reference. Figure 2 The number of mesh screen cylinders 31 is preferably three, and the innermost mesh screen cylinder 31 has the same inner diameter as the cylinder 21. The length and aperture of the mesh screen cylinder 31 decrease from the inside to the outside. The left ends of the three mesh screen cylinders 31 are all connected to the cylinder 21.

[0045] Furthermore, in order to separate and discharge finished granular materials of different specifications after screening, the screening unit 3 also includes a guide seat 32, which is provided with several partitions 321 and separates several guide channels 301. The partitions 321 are respectively abutted against the bottom of the mesh screen cylinder 31 at the end away from the cylinder 21. The bottom and right end of the mesh screen cylinder 31 are sequentially separated by the guide channels 301 to separate the granular materials of different diameters. It is mainly used to form a separation and avoid mixing of different granular materials. Two baffles 322 can also be added on both sides of the guide seat 32 to prevent the material from falling out of the guide channels 301 on both sides.

[0046] Understandably, the material slides obliquely along the mesh screen cylinder 31. When it passes through the holes, the material smaller than the screen holes passes through the screen cylinder, while the material that does not pass through the screen cylinder remains inside the screen cylinder and slides out from the right end along the screen cylinder axis, entering the corresponding guide channel 301. It is screened in multiple layers from the inside to the outside to form the guide flow into the silo of the corresponding specification ball material.

[0047] In some embodiments, for feeding and mixing the material powder and water, see [reference]. Figure 2 The mixing unit 1 includes a water supply component 11 and a powder supply component 12, and the discharge ends of the water supply component 11 and the powder supply component 12 are both inserted into the cylinder 21. When the material and water are transported into the cylinder 21, they can be mixed by rotating the cylinder 21.

[0048] The water supply component 11 includes a water supply mechanism and a spray pipe 113. The water supply mechanism includes a water tank 111 and a pump body 112. The water tank 111, the pump body 112 and the spray pipe 113 are connected in sequence through pipes. The spray pipe 113 extends into the downwardly inclined starting end of the cylinder 21.

[0049] Furthermore, the powder supply assembly 12 includes a hopper 121 and a screw conveyor pump 122. The hopper 121 is fixedly installed at the feed end of the screw conveyor pump 122, and the discharge end of the screw conveyor pump 122 extends into the downwardly inclined starting end of the cylinder 21. The material is fed through the hopper 121 and conveyed into the cylinder 21 by the screw conveyor pump 122.

[0050] It is understandable that the discharge end of the screw conveyor pump 122 is adjacent to the spray pipe 113, and the mixing effect can be achieved by controlling the conveying speed of the screw conveyor pump 122 and the pump body 112.

[0051] Furthermore, the outer diameter of the spiral plate 22 is 1 / 2 to 2 / 3 of the inner diameter of the cylinder 21, and the lower edge of the spiral plate 22 is in contact with the lower half-circle of the inner wall of the cylinder 21. Since the material is mainly concentrated in the lower half-circle of the cylinder 21 to form balls, the spiral plate 22 is in contact with the inner wall of the lower half-circle of the cylinder 21, which has the function of preventing the ball material from being fed to the right end too quickly. In addition, there is still space at the top, which can be used to install the scraper 4, which has the effect of controlling the diameter of the material balls and the propulsion speed.

[0052] In some implementations, refer to Figure 2 and Figure 5To provide quantitative, zoned water supply and achieve better gypsum granulation quality, the water supply assembly 11 includes a water supply mechanism and a spray pipe 113. The water supply mechanism includes a water tank 111 and a pump body 112. Several nozzles are linearly distributed at the bottom of the spray pipe 113. The water tank 111, pump body 112, and spray pipe 113 are connected sequentially by pipes. The spray pipe 113 extends into the downwardly inclined starting end of the cylinder 21, and the spray volume of the nozzles is sequentially adjusted along the inclined direction of the cylinder 21. The water supply is gradually reduced, and the cylindrical cavity 21 is divided into a granulation zone 2101, an auxiliary forming zone 2102, a forming zone 2103, and a shaping and drying zone 2104 from the downwardly inclined starting end to the bottom end. The water supply rates of the granulation zone 2101, the auxiliary forming zone 2102, the forming zone 2103, and the shaping and drying zone 2104 are 80-99%, 1-20%, 0%, and 0%, respectively. Water is drawn from the water tank 111 by the pump body 112 and sprayed into the cylindrical cavity 21 through the nozzle.

[0053] In some embodiments, please refer to Figures 1-4 To adjust the tilt angle to adapt to material discharge requirements, an tilt adjustment base 7 is also included. The tilt adjustment base 7 includes a seat 71, hydraulic push rods 72, a mounting platform 73, and a support platform 74. The first rotary drive component 5 is mounted on the top of the mounting platform 73, and the second rotary drive component 6 is mounted on the top of the support platform 74. There are three seats 71 and two hydraulic push rods 72. The bottom end of one hydraulic push rod 72 is hinged to the leftmost seat 71, and the bottom end of the other hydraulic push rod 72 is hinged to the rightmost seat 71. On the seat 71, the bottom ends of the mounting platform 73 are respectively hinged to the telescopic end of the hydraulic push rod 72 on the left and the seat 71 in the middle. The telescopic end of the hydraulic push rod 72 on the right is hinged to the support platform 74. The tilt of the cylinder 21 is adjusted by the telescopic movement of the hydraulic push rod 72 hinged to the mounting platform 73. Correspondingly, after the tilt of the cylinder 21 is adjusted, the tilt of the spiral plate 22 also needs to be adjusted. Therefore, the telescopic movement of the hydraulic push rod 72 on the right matches the telescopic movement of the hydraulic push rod 72 on the left, so that the spiral plate 22 always abuts against the inner wall of the lower half of the cylinder 21.

[0054] In some embodiments, to prevent material from sticking inside the cylinder 21, the cylinder granulator also includes a scraper 4, which axially penetrates the cylinder 21 and elastically adheres to the inner wall of the cylinder 21. As the cylinder 21 rotates, the scraper 4 scrapes off the material stuck inside.

[0055] For further details, please refer to Figures 1-4 Both ends of the scraper 4 are provided with brackets 401, which can be installed on the mounting platform 73 and the support platform 74. The powder supply component 12 can be installed on the bracket 401 on the left side to follow the slope change of the cylinder 21.

[0056] In some embodiments, to improve the efficiency of granule drying, shaping, and warehousing, please refer to... Figures 1-4 It also includes a hot air drying assembly 8, which includes a hot air blower 81 and an air duct 82. One end of the air duct 82 is connected to the air outlet of the hot air blower 81, and the other end extends into the inside of the mesh screen cylinder. It is used to perform hot air drying while screening, thereby reducing the subsequent drying time. If the drying efficiency is sufficient, screening and drying can be completed and directly connected to the warehouse.

[0057] In some embodiments, for adjusting the rotational speed of cylinder 21, please refer to... Figures 1-4 The first rotary drive component 5 includes a first transmission motor 51, an external gear ring 52, a base 56, and a transmission gear set 53. The external gear ring 52 is provided on the outside of the cylinder 21. The output shaft of the first transmission motor 51 is connected to the input end of the transmission gear set 53. The output end of the transmission gear set 53 meshes with the external gear ring 52 for transmission. A guide ring 54 is also provided on the outside of the cylinder 21. A support roller 55 is rotatably connected to the base 56. The support roller 55 is slidably connected to the guide ring 54 to support its inclined tilt and guide its rotation. The first transmission motor 51 is mounted on the mounting platform 73.

[0058] Please refer to Figures 1-4 The transmission gear set 53 includes a plurality of spur gears 531 meshing in sequence. One end of the spur gear is connected to the output shaft of the first transmission motor 51, and the other end of the spur gear 531 meshes with the external gear ring 52. By changing the number and specifications of the spur gears 531, different transmission ratios can be formed, thereby realizing speed regulation.

[0059] Understandably, multiple spur gears 531 can be suspended above the mounting platform 73 via a gear carrier, which is not shown in the figure.

[0060] To better understand this utility model, the following is combined with... Figures 1 to 5 The technical solution of this utility model is described in detail as follows: Material powder is fed into the hopper 121 and fed into the mixing zone 201 on the inner wall of the cylinder 21 at a set rate by the screw conveyor pump 122. At the same time, water is pumped to the spray pipe 113 at a certain proportional speed by the pump body 112 and sprayed into the mixing zone 201 inside the cylinder 21. The rotating cylinder 21 mixes the material and water inside, and the axial propulsion speed of the granules in the cylinder 21 is controlled by the screw plate 22 to make the material and water fully mixed and granulated. The granulated material exits from the right end of the cylinder 21 and enters the mesh screen cylinder 31, where it is screened from the inside to the outside and exits from the right end to the corresponding guide channel 301. The finished granules of different specifications are screened out and put into the silo.

[0061] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A drum granulator characterized by, The application relates to a pelletizing device, which comprises a cylinder pelletizing part, a mixing part and a screening part. The cylinder pelletizing part comprises a first rotating driving element, a second rotating driving element, a cylinder and a spiral plate, the cylinder is downwardly inclined and connected with the driving end of the first rotating driving element, and the spiral plate is connected with the driving end of the second rotating driving element and is inserted into the cylinder and abuts against the inner wall of the lower half of the cylinder. The mixing part is used for quantitatively supplying water and material and extends to the starting end of the downwardly inclined cylinder. The screening part is arranged at the downwardly inclined end of the cylinder and is used for screening the pelletized material.

2. The drum granulator of claim 1, wherein The screening part comprises a plurality of mesh screens with different diameters, wherein the mesh screens are distributed along the radial direction or the axial direction.

3. The drum granulator of claim 2, wherein The screening part further comprises a guide seat, which is provided with a plurality of partitions and a plurality of flow guide channels, the flow guide channels are arranged at the discharging end of the mesh screens and are used for discharging the pelletized material with different diameters.

4. The drum granulator of claim 3, wherein When the mesh screens are distributed along the radial direction, the mesh screens are concentrically arranged from the inside to the outside, are connected with the downwardly inclined end of the cylinder, the inner diameter of the innermost mesh screen is equal to the inner diameter of the cylinder, the length and the diameter of the mesh screens gradually decrease from the inside to the outside, and the partitions abut against the bottom of the end of the mesh screens away from the cylinder.

5. The drum granulator of claim 1, wherein The device further comprises a scraper, which axially penetrates the cylinder and elastically abuts against the inner wall of the cylinder.

6. The drum granulator of claim 1, wherein The device further comprises an inclination adjusting base, which comprises a seat body, a hydraulic push rod, a mounting table and a supporting table, the first rotating driving element is mounted on the top of the mounting table, the second rotating driving element is mounted on the top of the supporting table, the seat body is provided with three seat bodies, the hydraulic push rod is provided with two hydraulic push rods, the bottom end of one hydraulic push rod is hingedly connected with the leftmost seat body, the bottom end of the other hydraulic push rod is hingedly connected with the rightmost seat body, the bottom ends of the two ends of the mounting table are respectively hingedly connected with the extension end of the left hydraulic push rod and the seat body in the middle, and the extension end of the right hydraulic push rod is hingedly connected with the supporting table.

7. The drum granulator of claim 2, wherein The device further comprises a hot air drying assembly, which comprises a hot air machine and an air guide pipe, one end of the air guide pipe is connected with the air outlet of the hot air machine, and the other end extends into the mesh screen and is used for drying the screened material.

8. The drum granulator of claim 1, wherein The first rotating driving element comprises a first transmission motor, an outer gear ring, a base and a transmission gear set, the outer surface of the cylinder is provided with the outer gear ring, the output shaft of the first transmission motor is connected with the input end of the transmission gear set, the output end of the transmission gear set is in mesh transmission with the outer gear ring, the outer surface of the cylinder is further provided with a guide ring, the base is rotatably connected with a supporting roller, the supporting roller is in sliding connection with the guide ring and is used for supporting the inclined cylinder and guiding the rotation of the cylinder.

9. The drum granulator of claim 8, wherein The transmission gear set comprises a plurality of straight gears which are in mesh transmission, one end of the straight gear is connected with the output shaft of the first transmission motor, and the other end of the straight gear is in mesh transmission with the outer gear ring.

10. The drum granulator of claim 1, wherein The mixing part comprises a water supply assembly and a powder supply assembly, and the discharge ends of the water supply assembly and the powder supply assembly are inserted into the cylinder; the water supply assembly comprises a water supply mechanism and a spray pipe, the water supply mechanism is connected with the spray pipe and is used for supplying water; a plurality of spray heads are linearly distributed at the bottom of the spray pipe, the spray pipe extends to the starting end of the downwardly inclined cylinder, the spraying amount of the spray heads decreases successively along the inclined direction of the cylinder, and the cylinder is divided into a granulation zone, an auxiliary forming zone, a forming zone and a shaping and drying zone successively from the starting end of the downwardly inclined cylinder to the bottom end of the inclined cylinder, wherein the water supply amounts of the granulation zone, the auxiliary forming zone, the forming zone and the shaping and drying zone are 80-99%, 1-20%, 0% and 0% respectively.

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