A method and system for enhancing granulation by propeller blade disturbance

Abstract

A method and system for enhancing granulation by propeller blade disturbance, the system comprising a granulation barrel, a granulation device and a frame. The granulation barrel is a cylindrical structure, the frame is a frame structure, and the granulation barrel is arranged inside the frame. The granulation device comprises a granulation paddle shaft, propeller blades and a granulation paddle drive device. The granulation paddle shaft and propeller blades are both arranged inside the granulation barrel, and the granulation paddle drive device is arranged on the frame. The propeller blades are spirally arranged around the outer surface of the granulation paddle shaft, and spirally rise from the bottom end of the granulation paddle shaft to the upper part of the granulation paddle shaft. The present invention adopts spiral propeller blades, and the material is simultaneously acted upon by the force from the propeller blades during the granulation process, so that the material generates component velocities in different directions. Under the action of the component velocities in different directions, the material rolls along the surface of the propeller blades, reducing the critical conditions for material agglomeration and granulation, increasing the density of the particles, and improving the granulation quality.

Description

Technical Field

[0001] The present invention relates to a granulation device and method, in particular to a method and system for enhancing granulation based on propeller blade disturbance, belonging to the field of sintering granulation. Background Art

[0002] In the steel industry, sintering machines are used to sinter concentrate powder, rich ore powder and secondary iron-containing raw materials of different compositions and particle sizes into blocks, and partially eliminate harmful impurities such as sulfur and phosphorus contained in the ore in preparation for use in blast furnace ironmaking.

[0003] Since concentrate powder, rich ore powder and secondary iron-containing raw materials are all fine-particle powders, they cannot be sintered directly. They need to be processed into granular materials with a certain volume before they can be put into the sintering machine for sintering. Therefore, granulation is an important part of the sintering process.

[0004] The existing technology of sintering raw material granulation mainly adopts the cylindrical granulator, which is a hollow cylindrical body arranged at a certain angle and continuously rotating around the center line of the barrel. The material of the cylindrical granulator enters from the higher end. As the barrel rotates, the material rolls from the higher end to the lower end with the help of gravity and is discharged from the lower end. The principle of cylindrical granulation is as follows Figure 8 a. Figure 8 As shown in b, the barrel of the granulator will lift the material in the barrel during the rotation process. When the material is lifted to a certain height, that is, when the lifting angle is greater than the angle of repose of the material, the pile will collapse, causing the material to slide relatively along its surface, and complete the particle growth during the sliding process to achieve granulation. The cylindrical granulator is a passive granulation device. The granulation motion obtained by the material is weak, and the core material cannot obtain regular relative sliding, which does not meet the granulation conditions. Therefore, the granulation effect is poor, and the critical conditions for material granulation are high, such as high moisture content requirements and high adhesive ratio requirements, which make the proportion of non-ferrous components in the raw materials high. It is difficult to meet the requirements of modern technological progress and has formed a technical bottleneck. In addition, CN201911401704 discloses a multi-disc excitation perturbation method forced granulator, which is provided with a disk perpendicular to the axis of the rotating disk cluster and a plurality of excitation disks distributed along the axis, which improves the existing granulation process. However, the direction of the force exerted by the excitation disk on the material is relatively single, resulting in a low contact frequency between the materials and an insufficient granulation efficiency. Summary of the Invention

[0005] To address existing issues such as poor granulation performance with cylindrical granulators, high critical conditions for granulation, and low granulation efficiency with existing disturbance granulators, the present invention proposes a method and system for enhancing granulation using propeller blade disturbance. The present invention incorporates propeller blades with increasing radius from bottom to top within the granulator. During the granulation process, these blades impart forces in different directions to the material, causing it to roll in three dimensions and enhancing the granulation effect. Furthermore, the propeller blades at the lower portion of the granulator shaft have a larger radius, enabling them to simultaneously contact more material and improve granulation efficiency.

[0006] According to a first embodiment of the present invention, a propeller blade disturbance-enhanced granulation system is provided.

[0007] A propeller blade disturbance enhanced granulation system, the system includes a granulation barrel, a granulation device and a frame. The granulation barrel is a cylindrical structure, the frame is a frame structure, and the granulation barrel is arranged in the frame. The granulation device includes a granulation paddle shaft, a propeller blade and a granulation paddle driving device. The granulation paddle shaft and the propeller blade are both arranged inside the granulation barrel, and the granulation paddle driving device is arranged on the frame. The top of the granulation paddle shaft is connected to the granulation paddle driving device. The propeller blade is spirally arranged on the outer surface of the granulation paddle shaft, and spirals and rises from the bottom end of the granulation paddle shaft to the upper part of the granulation paddle shaft. The granulation paddle driving device drives the granulation paddle shaft to rotate. Preferably, the granulation paddle shaft is an eccentrically arranged internal propeller blade of the granulation barrel.

[0008] Preferably, the angle α between the upper surface of the propeller blade and the horizontal plane is an acute angle of 0-90°. Preferably, the angle α between the upper surface of the propeller blade and the horizontal plane is 5-85°, preferably 10-80°, more preferably 15-75°, more preferably 20-70°, for example, any one of 22°, 24°, 26°, 28°, 30°, 32°, 34°, 36°, 38°, 40°, 42°, 44°, 46°, 48°, 50°, 52°, 54°, 56°, 58°, 60°, 62°, 64°, 66°, and 68°.

[0009] Preferably, the angle α between the upper surface of the propeller blade and the horizontal plane gradually decreases or increases from top to bottom; preferably, the gradual decrease or increase is an arithmetic difference change.

[0010] Preferably, the granulating paddle shaft is provided with n propeller blades. The n propeller blades are all arranged in parallel and spirally around the granulating paddle shaft. Wherein, 1≤n≤20, preferably 2≤n≤15, more preferably 3≤n≤10, and n is an integer.

[0011] Preferably, the radius of the propeller blade gradually increases from top to bottom.

[0012] Preferably, the system further includes a slewing bearing and a granulation barrel drive system. The bottom of the granulation barrel body is connected to the bottom of the frame via the slewing bearing. The granulation barrel drive system is disposed on one side of the exterior of the frame and connected to the slewing bearing. The granulation barrel drive system drives the slewing bearing to rotate the granulation barrel body about its own axis within the frame.

[0013] Preferably, the system further comprises a feeding mechanism, a discharge mechanism, a fixed support, and a base. The feeding mechanism is disposed at the top of the granulation barrel. The discharge mechanism is disposed at the bottom of the granulation barrel. The fixed support is disposed below the frame and connected to the frame via an adjustable bracket. The base is disposed below the fixed support and is connected between the fixed support and the base via a load cell.

[0014] Preferably, the discharge mechanism includes a discharge disc, a push rod, and a discharge drive mechanism. The discharge drive mechanism is connected to the discharge disc via the push rod, i.e., the discharge drive mechanism drives the push rod to control the opening of the discharge disc. Preferably, a motor is further provided below the discharge disc to drive the discharge disc to rotate.

[0015] Preferably, the granulation barrel is arranged in an inclined manner. The angle γ formed by the axis of the granulation barrel and the horizontal direction is 5-60°, preferably 8-50°, more preferably 10-45°, further preferably 15-40°, and even more preferably 20-35°, for example, any one of 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, and 34°.

[0016] Preferably, the rotation direction of the granulating paddle shaft along its own axis is opposite to the rotation direction of the granulating barrel along its own axis. Preferably, the rotation speed of the granulating paddle shaft is 50 r / min to 1000 r / min, preferably 80 r / min to 600 r / min, more preferably 100 r / min to 400 r / min, and further preferably 150 r / min to 300 r / min. The rotation speed of the granulating barrel is 2 r / min to 20 r / min, preferably 4 r / min to 10 r / min, and more preferably 6 r / min to 8 r / min.

[0017] Preferably, the device further comprises a scraper. The scraper comprises a vertical section and a horizontal section. The top end of the vertical section passes through the top of the granulation barrel and is fixedly connected to the bracket. One end of the horizontal section is vertically connected to the bottom end of the vertical section, and the other end thereof points to the axial direction of the granulation barrel. The surfaces from the blade to the back of the blade of the vertical section and the horizontal section are both inclined surfaces facing in the opposite direction to the rotation direction of the granulation barrel. Preferably, the vertical distance between the horizontal section and the bottom surface of the granulation barrel is not more than 10 mm, preferably not more than 8 mm, and more preferably not more than 5 mm.

[0018] According to a second embodiment of the present invention, a method for intensified granulation using a propeller blade disturbance intensified granulation system is provided.

[0019] A method for intensified granulation using a propeller blade disturbance intensified granulation system, the method comprising the following steps:

[0020] 1) According to actual production needs, the initial speed of the granulating paddle shaft is adjusted to Z0, r / min; the average initial angle between the upper surface of the propeller blade and the horizontal plane is adjusted to α0,°.

[0021] 2) The material is transported into the granulation barrel, and the granulation barrel drive system is started to drive the granulation barrel to rotate along its own axis. At the same time, the granulation paddle drive device is started to drive the granulation paddle shaft and the granulation paddle blade to rotate in the direction opposite to the rotation direction of the granulation barrel; after the granulation is completed, the granulated material is obtained.

[0022] 3) Detect the average particle size of the granulated material (d0, mm). According to the size of d0, adjust the speed of the granulating paddle shaft to make the particle size of the granulated material meet the actual production needs.

[0023] Preferably, the method further comprises: in step 1), adjusting the initial rotation speed of the granulating paddle shaft to Z0: 50 r / min to 1000 r / min, preferably 80 r / min to 600 r / min, more preferably 100 r / min to 400 r / min, and further preferably 150 r / min-300 r / min.

[0024] Preferably, the average initial angle between the upper surface of the granulating blade and the horizontal plane is adjusted to α0:

[0025] 101) When the average particle size d0 of the granulated material required for actual production is ≤1mm, 0°<α0≤8° or 80°≤α0<90°.

[0026] 102) When the average particle size of the granulated material required for actual production is 1mm<d0≤3mm, 8°<α0≤18° or 70°≤α0<80°.

[0027] 103) When the average particle size of the granulated material required for actual production is 3mm<d0≤5mm, 18°<α0≤36° or 60°≤α0<70°.

[0028] 104) When the average particle size of the granulated material required for actual production is 5mm<d0≤8mm, 36°<α0≤45° or 55°≤α0<60°.

[0029] 105) When the average particle size of the granulated material required for actual production is 8mm<d0, 45°<α0<55°.

[0030] Preferably, the average value of the initial angle α0 between the upper surface of the granulating blade and the horizontal plane refers to:

[0031] A) When the angle α between the upper surface of all granulating blades and the horizontal plane is the same, α0=α. When the change in the value of α0 needs to be adjusted by △α, the change in the angle α between the upper surface of all granulating blades and the horizontal plane needs to be adjusted by △α;

[0032] B) When the angle α between the upper surface of all granulating blades and the horizontal plane decreases or increases layer by layer, the angles between the upper surface of each layer of granulating blades and the horizontal plane in the n layers of granulating blades are set to be α1, α2, α3, ···, α n . Then α0=(α1+α1+α3+···+α n When the change value of α0 needs to be adjusted to △α, the change value of the angle α between the upper surface of all granulating blades and the horizontal plane needs to be adjusted to △α.

[0033] Preferably, step 3) is specifically as follows: setting the average particle size range of the granulated material required for actual production to [d min , d max The average particle size of the granulated material discharged by the discharge mechanism is detected and recorded as d0, mm.

[0034] 301) When d0>d max When the rotation speed of the granulating paddle shaft is reduced until d0∈[d min , d max ].

[0035] 302) When d min ≤d0≤d max When , the current state of the system remains unchanged;

[0036] 303) When d0<d min When the rotation speed of the granulating paddle shaft is increased until d0∈[d min , d max ].

[0037] Preferably, step 301) is specifically as follows:

[0038] 301a) When d0>150%d max hour,

[0039] 301b) When 130% d max <d0≤150%d maxhour,

[0040] 301c) when d max <d0≤130%d max hour,

[0041] Here, k1, k2, and k3 are speed adjustment coefficients. The value range of k1 is 0.65-0.9, the value range of k2 is 0.35-0.65, and the value range of k3 is 0.1-0.35. Z0 is the initial speed of the granulating paddle shaft, and Z1 is the speed of the granulating paddle shaft after adjustment. The size of d0 is detected in real time, and the speed of the granulating paddle shaft is adjusted to control the particle size of the granulated material to meet production requirements.

[0042] Preferably, step 303) is specifically as follows:

[0043] 303a) When d0≤50%d min hour,

[0044] 303b) When 50% d min <d0≤80%d min hour,

[0045] 303c) When 80% d min <d0<d min hour,

[0046] K4, K5, and K6 are speed adjustment coefficients, with K4 ranging from 0.9 to 1.2, K5 from 0.5 to 0.9, and K6 from 0.15 to 0.5. Z0 is the initial speed of the paddle shaft, and Z1 is the adjusted speed. The d0 value is monitored in real time, and the paddle shaft speed is adjusted to control the particle size of the granulated material to meet production requirements.

[0047] In the present invention, the radius of the propeller blade is less than R / 2, where R is the diameter of the drum mixer.

[0048] In the prior art, since the cylindrical granulator is set at an angle, the granulation process relies on the rolling of the cylinder to drive the rolling of the material and then lift the material. When the material is lifted to a certain height, its lifting angle is greater than the angle of repose of the material, causing the material pile to collapse, and the material to slide relatively along the surface. During the sliding process, the particles grow and granulation is achieved. In this process, the granulation effect on the material is weak. Moreover, since the material has a certain accumulation volume in the cylinder, the core material cannot obtain regular relative sliding during the above-mentioned sliding granulation process, and the granulation conditions are not met, so the granulation effect is poor. This is mainly manifested in the high requirements for the critical conditions for material granulation; such as high moisture content requirements and high adhesive ratio requirements, which leads to a high proportion of non-ferrous components in the raw materials, making it difficult to meet the requirements of modern technological progress. In addition, CN201911401704 discloses a multi-disc excitation disturbance method forced granulator, which is equipped with multiple excitation disks perpendicular to the axis of the rotating disk cluster and distributed along the axis. Although the process purpose of active granulation is achieved, the direction of the force exerted by the excitation disk on the material is relatively single, resulting in a low contact frequency between the materials and insufficient granulation efficiency.

[0049] In the present invention, propeller blades are installed in the pelletizer, subjecting the material to continuous, directional forces during the pelletizing process, causing the material to roll in three dimensions and enhancing the pelletizing effect. Furthermore, the lower radius of the propeller blades is larger than the upper radius, allowing the lower propeller blades to act on more material during operation, resulting in higher pelletizing efficiency.

[0050] In the present invention, material enters the granulation barrel through the feed port at the top of the bracket and falls to the bottom of the barrel. The granulation paddle drive system and the granulation barrel drive system are activated, driving the granulation barrel and the granulation paddle shaft to rotate about their own axes. The granulation paddle shaft drives the propeller blades to rotate. The propeller blades have a spiral structure, which ensures that the material is continuously and continuously subjected to forward and upward forces during the granulation process, causing the material to move forward and upward rapidly and roll. During this movement, the material continuously absorbs surrounding fine particles, gradually increasing in size. When the particle size of the material meets production requirements, it is discharged from the bottom of the barrel.

[0051] In the present invention, Figure 5 As shown in the figure, during the granulation process, the material is simultaneously subjected to forces from different directions from the propeller blades, causing the material to generate different velocities. Under the influence of these velocities, the material rolls along the propeller surface. The coarser material particles act as cores and continuously adhere to the surrounding fine particles during the rolling process, growing rapidly. At the same time, the propeller blades continuously apply external forces in different directions to the growing material particles, making it easier for the material to agglomerate into granules, reducing the critical conditions for material agglomeration, increasing the compactness of the granules, and improving the granulation quality.

[0052] In the present invention, Figure 5、 Figure 6 As shown, the force on the material at any point on the propeller blade at any time mainly includes the supporting force F N The force is composed of three parts: the force (upward perpendicular to the support surface), the friction force f (opposite to the relative motion direction of the particles), and the gravity G (vertically downward). Assuming that the blade diameter direction of the propeller is the x-axis, the tangent direction is the y-axis, and the axis direction is the z-axis, the force analysis is carried out and the result is:

[0053] Support force F N : Component F along the y-axis Ny , the component F along the z-axis Nz ;

[0054] Friction force f: component f along the x-axis x , provides the centripetal force for the particle's circular motion, and the component f along the y-axis y , the component f along the z-axis z ;

[0055] Combined, get

[0056]

[0057] Where α is F N The angle between f and the positive direction of the z-axis, β is the angle between the projection of f on the xoy plane and the positive direction of the x-axis.

[0058] Assume that the particle is spherical with radius d, F 向 is the initial centripetal force of the particle in circular motion, r is the radius of the circle, and w is the angular velocity of the blade. The resultant force in each direction is:

[0059] x direction: F 合x =f x =fcosβ,F 向 =mω 2 r

[0060] y direction: F Ny =f y , F N sinα=fsinβ

[0061] z direction: F 合z =GF Nz -f z =mg-F N cosα-fsinα

[0062] Combined, get

[0063]

[0064] Combined with the force analysis results, the motion state of the particles at any point on the propeller blade is analyzed and it is found that due to f x It is not enough to provide the centripetal force required for the particles to keep moving in a circular motion along the propeller blades. The particles will gradually deviate from the center of the circle under the action of inertia, produce centrifugal motion, and finally be thrown out from the edge of the blade along the tangential direction. Its motion trajectory is roughly as follows: Figure 7 shown.

[0065] In the present invention, the movement process of the particles is mainly manifested as: circular motion in the xoy plane, accelerated motion along the negative direction of the z axis, and the overall motion trajectory is a spiral line with a gradually increasing radius along the negative direction of the z axis.

[0066] xoy plane: θ = ωt + θ0.

[0067] Radius of circle: r = f(a1, t).

[0068] Z-axis direction: z=z0-h(a2,t).

[0069] Where θ0 is the initial rotation angle of the propeller blade, ω is the angular velocity of the propeller blade, r is the radius of the circular motion of the particle, a1 is the tangential acceleration of the circular motion of the particle, z0 is the initial coordinate of the particle along the Z axis, a2 is the acceleration of the particle along the negative direction of the Z axis, and h(a2,t) is the displacement of the particle along the negative direction of the Z axis.

[0070] In the present invention, the radius of the propeller blades gradually increases from top to bottom, with the lower blades having a larger radius. This allows for the simultaneous entrainment of more material particles, increasing the contact rate between materials. Because the friction between the propeller blades and the material during movement is insufficient to provide the centripetal force for movement, the material gradually escapes from the propeller blades. Therefore, the radius of the upper portion of the propeller blades is reduced. Furthermore, as the height of the propeller increases, the radius of the propeller blades gradually decreases, allowing the material to escape from the propeller blades sooner after acquiring sufficient kinetic energy, allowing it to move more freely within the granulation barrel, increasing the probability of collision between materials and improving granulation efficiency.

[0071] In the present invention, as a preferred embodiment, the helix angle of the propeller blade gradually increases from bottom to top. When the material is at the bottom of the granulation barrel, it is subjected to a greater upward lifting force from the propeller blade, and rises faster. When the material is in the upper middle part of the granulation barrel, it is subjected to a greater horizontal force from the propeller blade, which increases the speed of the material's horizontal movement. That is, the present invention gradually increases the helix angle of the propeller blade (i.e., the angle between the blade surface and the horizontal plane) from bottom to top according to the movement state of the material at different stages in the granulation barrel, conforming to the movement law of the material and improving the granulation efficiency.

[0072] In the present invention, Figure 4As shown in the figure, the interaction between the propeller blades and the pelletizing drum creates three zones of material movement in the horizontal plane: the pelletizing excitation zone, the turbulent flow zone, and the material conveying zone, from the inside out. In the material conveying zone, the rotation of the pelletizing drum drives the material particles toward the center of the drum, where they are transported to the turbulent flow zone and the pelletizing excitation zone. In the pelletizing excitation zone, the propeller blades impart a forward force to the material, causing the particles to move forward while simultaneously spinning horizontally. Particles from the material conveying zone and pelletizing excitation zone ultimately converge in the turbulent flow zone. Because the material movement in these zones is in opposite directions and the material rolls under the action of the propeller blades, the material contacts more frequently in the turbulent flow zone. As coarser particles roll in the horizontal plane, they continuously adhere to finer particles, forming larger particles.

[0073] In the present invention, when 0°<α0≤45°, the lifting force to which the material is subjected during the production process is relatively large. When α0 gradually decreases, the lifting force and horizontal force to which the material is subjected are gradually reduced, resulting in a decrease in the movement height and speed of the material in the granulation barrel, a shortened granulation time, and a reduced granulation efficiency, thereby reducing the particle size of the granulated material. When 45°<α0<90°, the horizontal force to which the material is subjected during the production process is relatively large. When α0 gradually increases, the lifting force decreases and the horizontal force increases, resulting in a decrease in the movement height of the material in the granulation barrel, a shortened granulation time, thereby reducing the particle size of the granulated material. According to production experience, it is concluded that when Z0 remains unchanged and α0 changes between 40°-55°, the horizontal force and lifting force to which the material is subjected in the granulation barrel are relatively balanced (the change amplitude is relatively small, reaching a peak), the lifting height and movement speed are both in a relatively ideal state, and the particle size of the granulated material obtained at this time is the largest.

[0074] Through experiments, it was found that when the rotation speed of the granulating blade shaft is constant (for example, 150r / min-300r / min), the average particle size d0 of the granulated material required for actual production and the average angle α0 between the upper surface of the granulating blade and the horizontal plane have the following rules:

[0075] When 0°<α0≤8° or 80°≤α0<90°, the average particle size d0 of the granulated material required for actual production is ≤1mm.

[0076] When 8°<α0≤18° or 70°≤α0<80°, the average particle size of the granulated material required for actual production is 1mm<d0≤3mm.

[0077] When 18°<α0≤36° or 60°≤α0<70°, the average particle size of the granulated material required for actual production is 3mm<d0≤5mm.

[0078] When 36°<α0≤45° or 55°≤α0<60°, the average particle size of the granulated material required for actual production is 5mm<d0≤8mm.

[0079] At that time, when 45°<α0<55°, the average particle size of the granulated material required for actual production is 8mm<d0.

[0080] In the present invention, once α0 is determined, within the range of 150 r / min-300 r / min, the faster the rotation speed of the granulating paddle shaft, the greater the force exerted on the material in the granulating barrel, the faster the movement speed of the material, the higher the contact frequency, and the larger the particle size of the granulated material obtained. The slower the rotation speed, the smaller the force exerted on the material in the granulating barrel, the slower the movement speed of the material, the lower the contact frequency, and the smaller the particle size of the granulated material obtained.

[0081] In the present invention, a coarse adjustment and fine adjustment method is used to control the particle size of the granulated material. Based on production experience, the average initial angle between the upper surface of the propeller blade and the horizontal plane is adjusted to α0,°, and the initial rotational speed of the granulating paddle shaft is adjusted to Z0, r / min (50r / min≤Z0≤100r / min). The particle size of the granulated material obtained under the above production conditions is compared with the particle size of the granulated material required for production. The theoretical granulating paddle shaft rotational speed Z1 under the current α0 condition is calculated according to the formula, and the rotational speed of the granulating paddle shaft is adjusted to Z1. To adjust the initial angle between the upper surface of the propeller blade and the horizontal plane, it is generally sufficient to directly replace the granulating paddle shaft with a propeller blade having a different inclined surface.

[0082] In this invention, a discharge device and a load cell are installed at the discharge port. The load cell carries the weight of the metering disturbance enhanced granulation system, providing real-time information on the amount of material in the barrel, providing basic data for controlling the material filling rate. The discharge device controls the granulator's discharge speed, while a push rod can freely control the opening of the discharge disc, thereby jointly controlling the filling rate in the granulation barrel with the load cell to ensure the granulation effect. A motor rotates the discharge disc to prevent blockage at the granulation outlet, which would otherwise hinder discharge.

[0083] In the present invention, swivel supports are installed on both sides of the bottom of the granulation barrel. Each swivel support is mounted on a track of a fixed support and can move along the track. Furthermore, the height of each swivel support can be freely adjusted to change the inclination angle of the granulation barrel. As a preferred embodiment, the swivel supports are adjusted to tilt the granulation barrel toward the granulation unit. This allows the material to accumulate at the bottom of the granulation unit, facilitating contact between the propeller blades and the material, thereby improving granulation efficiency.

[0084] In the present invention, a barrel wall scraper is provided in the granulating barrel body, which is fixed on a bracket and extends into the granulating barrel body. When the granulating barrel body is running, the barrel wall scraper scrapes off the materials splashed on the barrel wall of the granulating barrel body for granulation again.

[0085] Compared with the prior art, the present invention has the following beneficial effects:

[0086] 1. The present invention adopts a spiral propeller blade. During the granulation process, the material is simultaneously acted upon by the force from the propeller blade, so that the material generates component velocities in different directions. Under the action of the component velocities in different directions, the material rolls along the surface of the propeller blade, thereby reducing the critical condition for the material to agglomerate into granules, increasing the compactness of the granules, and improving the granulation quality.

[0087] 2. The radius of the spiral propeller blades used in the present invention gradually increases from bottom to top, and the radius of the propeller blades at the bottom is larger, which can roll up more material particles at the same time, increase the contact rate between materials, and improve granulation efficiency.

[0088] 3. The present invention aims at the movement state of the material at different stages in the granulation barrel, so that the spiral angle of the spiral propeller blade gradually increases from bottom to top, which conforms to the movement law of the material and improves the granulation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Figure 1 This is a front view of a propeller blade disturbance-enhanced granulation device provided by the present invention.

[0090] Figure 2 This is a side view of a propeller blade disturbance-enhanced granulation device provided by the present invention.

[0091] Figure 3 This is a structural schematic diagram of a discharging device of a propeller blade disturbance granulation device provided by the present invention.

[0092] Figure 4 Schematic diagram of the movement direction of the material in the propeller blade disturbance granulation device provided by the present invention

[0093] Figure 5 This is a force analysis diagram of material at any point on the propeller blade of a propeller blade disturbance granulation device provided by the present invention.

[0094] Figure 6 This is a force analysis diagram of material at any point on the propeller blade of a propeller blade disturbance granulation device provided by the present invention.

[0095] Figure 7 A motion trajectory diagram of material at any point on the propeller blade of a propeller blade disturbance granulation device provided by the present invention.

[0096] Figure 8 a is a structural diagram of a cylindrical granulator in the prior art.

[0097] Figure 8 b is a schematic diagram of material sliding in a cylindrical granulator in the prior art.

[0098] Figure markings: 1: granulation barrel body; 2: granulation device; 201: granulation paddle shaft; 202: propeller blade; 203: granulation paddle driving device; 3: frame; 4: slewing bearing; 5: granulation barrel driving system; 6: feeding mechanism; 7: unloading mechanism; 701: unloading disc; 702: push rod; 703: unloading driving mechanism; 704: motor; 8: fixed support; 9: base; 10: adjustable bracket; 11: weighing sensor; 12: scraper; 1201: vertical section; 1202: horizontal section. DETAILED DESCRIPTION

[0099] The technical solutions of the present invention are illustrated below with examples, and the scope of protection requested by the present invention includes but is not limited to the following embodiments.

[0100] According to a first embodiment of the present invention, a propeller blade disturbance-enhanced granulation system is provided.

[0101] A propeller blade disturbance enhanced granulation system, the system includes a granulation barrel 1, a granulation device 2 and a frame 3. The granulation barrel 1 is a cylindrical structure, the frame 3 is a frame structure, and the granulation barrel 1 is arranged in the frame 3. The granulation device 2 includes a granulation paddle shaft 201, a propeller blade 202 and a granulation paddle driving device 203. The granulation paddle shaft 201 and the propeller blade 202 are both arranged inside the granulation barrel 1, and the granulation paddle driving device 203 is arranged on the frame 3. The top of the granulation paddle shaft 201 is connected to the granulation paddle driving device 203. The propeller blade 202 is spirally arranged on the outer surface of the granulation paddle shaft 201, and spirals and rises from the bottom end of the granulation paddle shaft 201 to the upper part of the granulation paddle shaft 201. The granulation paddle driving device 203 drives the granulation paddle shaft 201 to rotate. Preferably, the granulation paddle shaft 201 is an eccentrically arranged internal propeller blade of the granulation barrel 1.

[0102] Preferably, the angle α between the upper surface of the propeller blade 202 and the horizontal plane is an acute angle of 0-90°. Preferably, the angle α between the upper surface of the propeller blade 202 and the horizontal plane is 5-85°, preferably 10-80°, more preferably 15-75°, and more preferably 20-70°, for example, any one of 22°, 24°, 26°, 28°, 30°, 32°, 34°, 36°, 38°, 40°, 42°, 44°, 46°, 48°, 50°, 52°, 54°, 56°, 58°, 60°, 62°, 64°, 66°, and 68°.

[0103] Preferably, the angle α between the upper surface of the propeller blade 202 and the horizontal plane gradually decreases or increases from top to bottom. Preferably, the gradually decreasing or gradually increasing angle is an arithmetic progression.

[0104] Preferably, n propeller blades 202 are provided on the granulating paddle shaft 201. The n propeller blades 202 are all arranged in parallel and spirally around the granulating paddle shaft 201. Wherein, 1≤n≤20, preferably 2≤n≤15, more preferably 3≤n≤10, and n is an integer.

[0105] Preferably, the radius of the propeller blade 202 gradually increases from top to bottom.

[0106] Preferably, the system further includes a slewing bearing 4 and a granulation barrel drive system 5. The bottom of the granulation barrel body 1 is connected to the bottom of the frame 3 via the slewing bearing 4. The granulation barrel drive system 5 is arranged on one side of the outside of the frame 3 and is connected to the slewing bearing 4. The granulation barrel drive system 5 drives the slewing bearing 4 to rotate the granulation barrel body 1 around its own axis within the frame 3.

[0107] Preferably, the device further comprises a feeding mechanism 6, a discharging mechanism 7, a fixed support 8 and a base 9. The feeding mechanism 6 is arranged at the top of the granulating barrel 1. The discharging mechanism 7 is arranged at the bottom of the granulating barrel 1. The fixed support 8 is arranged below the frame 3 and is connected to the frame 3 via an adjustable bracket 10. The base 9 is arranged below the fixed support 8, and the fixed support 8 and the base 9 are connected via a weighing sensor 11.

[0108] Preferably, the discharge mechanism 7 includes a discharge disc 701, a push rod 702, and a discharge drive mechanism 703. The discharge drive mechanism 703 is connected to the discharge disc 701 via the push rod 702, that is, the discharge drive mechanism 703 drives the push rod 702 to control the opening of the discharge disc 701. Preferably, a motor 704 is further provided below the discharge disc 701 to drive the discharge disc 701 to rotate.

[0109] Preferably, the granulation barrel 1 is arranged in an inclined manner. The angle γ formed by the axis of the granulation barrel 1 and the horizontal direction is 5-60°, preferably 8-50°, more preferably 10-45°, further preferably 15-40°, and even more preferably 20-35°, for example, any one of 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, and 34°.

[0110] Preferably, the rotation direction of the granulating paddle shaft 201 along its own axis is opposite to the rotation direction of the granulating barrel 1 along its own axis. Preferably, the rotation speed of the granulating paddle shaft is 50 r / min to 1000 r / min, preferably 80 r / min to 600 r / min, more preferably 100 r / min to 400 r / min, and further preferably 150 r / min to 300 r / min; the rotation speed of the granulating barrel 1 is 2 r / min to 20 r / min, preferably 4 r / min to 10 r / min, and more preferably 6 r / min to 8 r / min.

[0111] Preferably, the device further comprises a scraper 12. The scraper 12 comprises a vertical section 1201 and a horizontal section 1202. The top of the vertical section 1201 passes through the top of the granulation barrel 1 and is fixedly connected to the frame 3. One end of the horizontal section 1202 is vertically connected to the bottom end of the vertical section 1201, and the other end thereof points to the axial direction of the granulation barrel 1. The surfaces from the blade to the back of the blade of the vertical section 1201 and the horizontal section 1202 are both inclined surfaces facing in the opposite direction to the rotation direction of the granulation barrel 1. Preferably, the vertical distance between the horizontal section 1202 and the bottom surface of the granulation barrel 1 is not more than 10 mm, preferably not more than 8 mm, and more preferably not more than 5 mm.

[0112] According to a second embodiment of the present invention, a method for intensified granulation using a propeller blade disturbance intensified granulation system is provided.

[0113] A method for intensified granulation using a propeller blade disturbance intensified granulation system, the method comprising the following steps:

[0114] 1) According to actual production needs, the initial speed of the granulating paddle shaft 201 is adjusted to Z0, r / min; the average initial angle between the upper surface of the propeller blade 202 and the horizontal plane is adjusted to α0,°;

[0115] 2) The material is conveyed into the granulation barrel 1, and the granulation barrel drive system 5 is started to drive the granulation barrel 1 to rotate along its own axis. At the same time, the granulation paddle drive device 203 is started to drive the granulation paddle shaft 201 and the granulation blade 202 to rotate in the direction opposite to the rotation direction of the granulation barrel 1; after the granulation is completed, the granulated material is obtained;

[0116] 3) Detect the average particle size of the granulated material as d0, mm. According to the size of d0, adjust the rotation speed of the granulating paddle shaft 201 so that the particle size of the granulated material meets the actual production needs.

[0117] Preferably, the method further comprises: in step 1), adjusting the initial rotation speed Z0 of the granulating paddle shaft 201 to 50 r / min to 1000 r / min, preferably 80 r / min to 600 r / min, more preferably 100 r / min to 400 r / min, and further preferably 150 r / min-300 r / min.

[0118] Preferably, the average initial angle between the upper surface of the granulating blade 202 and the horizontal plane is adjusted to α0:

[0119] 101) When the average particle size d0 of the granulated material required for actual production is ≤1mm, 0°<α0≤8° or 80°≤α0<90°;

[0120] 102) When the average particle size of the granulated material required for actual production is 1mm<d0≤3mm, 8°<α0≤18° or 70°≤α0<80°;

[0121] 103) When the average particle size of the granulated material required for actual production is 3mm<d0≤5mm, 18°<α0≤36° or 60°≤α0<70°;

[0122] 104) When the average particle size of the granulated material required for actual production is 5mm<d0≤8mm, 36°<α0≤45° or 55°≤α0<60°;

[0123] 105) When the average particle size of the granulated material required for actual production is 8mm<d0, 45°<α0<55°.

[0124] Preferably, the average value of the initial angle α0 between the upper surface of the granulating blade 202 and the horizontal plane is:

[0125] A) When the angle α between the upper surface of all granulating blades 202 and the horizontal plane is the same, α0=α. When the change in the value of α0 needs to be adjusted by △α, the change in the angle α between the upper surface of all granulating blades 202 and the horizontal plane needs to be adjusted to △α;

[0126] B) When the angle α between the upper surface of all granulating blades 202 and the horizontal plane decreases or increases layer by layer, it is assumed that the angles between the upper surface of each layer of the granulating blades 202 and the horizontal plane are α1, α2, α3, ..., α n . Then α0=(α1+α1+α3+···+α n When the change value of α0 needs to be adjusted to Δα, the change value of the angle α between the upper surface of all the granulating blades 202 and the horizontal plane needs to be adjusted to Δα.

[0127] Preferably, step 3) is specifically as follows: setting the average particle size range of the granulated material required for actual production to [d min , d max ], mm. The average particle size of the granulated material discharged by the discharge mechanism 7 is detected and recorded as d0, mm;

[0128] 301) When d0>d max When the rotation speed of the granulating paddle shaft 201 is reduced until d0∈[d min , d max ].

[0129] 302) When d min ≤d0≤d max When , the current state remains unchanged.

[0130] 303) When d0<d min When the rotation speed of the granulating paddle shaft 201 is increased until d0∈[d min , d max ].

[0131] Preferably, step 301) is specifically as follows:

[0132] 301a) When d0>150%d max hour,

[0133] 301b) When 130% d max <d0≤150%d max hour,

[0134] 301c) when d max <d0≤130%d max hour,

[0135] Where k1, k2, and k3 are speed adjustment coefficients, with k1 ranging from 0.65 to 0.9, k2 from 0.35 to 0.65, and k3 from 0.1 to 0.35. Z0 is the initial speed of the granulating paddle shaft 201, and Z1 is the adjusted speed of the granulating paddle shaft 201. d0 is detected in real time, and the speed of the granulating paddle shaft 201 is adjusted to control the particle size of the granulated material to meet production requirements.

[0136] Preferably, step 303) is specifically as follows:

[0137] 303a) When d0≤50%d min hour,

[0138] 303b) When 50% d min <d0≤80%dmin hour,

[0139] 303c) When 80% d min <d0<d min hour,

[0140] Wherein, k4, k5, and k6 are speed adjustment coefficients, with k4 ranging from 0.9 to 1.2, k5 from 0.5 to 0.9, and k6 from 0.15 to 0.5. Z0 is the initial speed of the granulating paddle shaft 201, and Z1 is the adjusted speed of the granulating paddle shaft 201. The size of d0 is detected in real time, and the speed of the granulating paddle shaft 201 is adjusted to control the particle size of the granulated material to meet production requirements.

[0141] Example 1

[0142] A propeller blade disturbance enhanced granulation system, the system includes a granulation barrel 1, a granulation device 2 and a frame 3. The granulation barrel 1 is a cylindrical structure, the frame 3 is a frame structure, and the granulation barrel 1 is arranged in the frame 3. The granulation device 2 includes a granulation paddle shaft 201, a propeller blade 202 and a granulation paddle driving device 203. The granulation paddle shaft 201 and the propeller blade 202 are both arranged inside the granulation barrel 1, and the granulation paddle driving device 203 is arranged on the frame 3. The top of the granulation paddle shaft 201 is connected to the granulation paddle driving device 203. The propeller blade 202 is spirally arranged on the outer surface of the granulation paddle shaft 201, and spirals and rises from the bottom end of the granulation paddle shaft 201 to the upper part of the granulation paddle shaft 201. The granulation paddle driving device 203 drives the granulation paddle shaft 201 to rotate. The granulation paddle shaft 201 is an eccentrically arranged internal propeller blade of the granulation barrel 1.

[0143] Example 2

[0144] Example 1 is repeated, except that the angle α between the upper surface of the propeller blade 202 and the horizontal plane is 22°.

[0145] Example 3

[0146] Example 1 is repeated, except that the angle α between the upper surface of the propeller blade 202 and the horizontal plane is 36°.

[0147] Example 4

[0148] Example 1 is repeated, except that the angle α between the upper surface of the propeller blade 202 and the horizontal plane is 52°.

[0149] Example 5

[0150] Example 1 is repeated, except that the angle α between the upper surface of the propeller blade 202 and the horizontal plane is 66°.

[0151] Example 6

[0152] Repeat Example 2, except that the angle α between the upper surface of the propeller blade 202 and the horizontal plane gradually decreases or increases from top to bottom. The gradual decrease or increase is an arithmetic progression.

[0153] Example 7

[0154] Example 6 was repeated, except that three propeller blades 202 were provided on the granulating paddle shaft 201. The three propeller blades 202 were all arranged in parallel and spirally around the granulating paddle shaft 201. The radius of the propeller blades 202 gradually increased from top to bottom.

[0155] Example 8

[0156] Example 7 is repeated, except that the system further includes a slewing bearing 4 and a granulation barrel drive system 5. The bottom of the granulation barrel body 1 is connected to the bottom of the frame 3 via the slewing bearing 4. The granulation barrel drive system 5 is arranged on one side of the outside of the frame 3 and connected to the slewing bearing 4. The granulation barrel drive system 5 drives the slewing bearing 4 to rotate the granulation barrel body 1 around its own axis within the frame 3.

[0157] Example 9

[0158] Example 8 was repeated, except that the device further included a feeding mechanism 6, a discharging mechanism 7, a fixed support 8, and a base 9. The feeding mechanism 6 was disposed on the top of the granulation barrel 1. The discharging mechanism 7 was disposed on the bottom of the granulation barrel 1. The fixed support 8 was disposed below the frame 3 and connected to the frame 3 via an adjustable bracket 10. The base 9 was disposed below the fixed support 8, and a weighing sensor 11 was connected between the fixed support 8 and the base 9.

[0159] Example 10

[0160] Example 9 is repeated, except that the discharge mechanism 7 includes a discharge disc 701, a push rod 702, and a discharge drive mechanism 703. The discharge drive mechanism 703 is connected to the discharge disc 701 via the push rod 702. That is, the discharge drive mechanism 703 drives the push rod 702 to control the opening of the discharge disc 701. A motor 704 is also provided below the discharge disc 701 to drive the discharge disc 701 to rotate.

[0161] Example 11

[0162] Example 10 was repeated, except that the granulating barrel 1 was tilted and the angle γ between the axis of the granulating barrel 1 and the horizontal direction was 25°.

[0163] Example 12

[0164] Example 10 was repeated, except that the granulating barrel 1 was tilted and the angle γ between the axis of the granulating barrel 1 and the horizontal direction was 30°.

[0165] Example 13

[0166] Example 10 was repeated, except that the granulating barrel 1 was tilted and the angle γ between the axis of the granulating barrel 1 and the horizontal direction was 35°.

[0167] Example 14

[0168] Example 11 was repeated, except that the rotation direction of the granulating paddle shaft 201 along its own axis was opposite to the rotation direction of the granulating barrel 1 along its own axis. The rotation speed of the granulating paddle shaft 201 was 150 r / min, and the rotation speed of the granulating barrel 1 was 7 r / min.

[0169] Example 15

[0170] Repeat Example 14, except that the device further includes a scraper 12. The scraper 12 includes a vertical section 1201 and a horizontal section 1202. The top of the vertical section 1201 passes through the top of the granulation barrel 1 and is fixedly connected to the frame 3. One end of the horizontal section 1202 is vertically connected to the bottom end of the vertical section 1201, and the other end thereof points to the axial direction of the granulation barrel 1. The surfaces from the blade to the back of the blade of the vertical section 1201 and the horizontal section 1202 are both inclined surfaces facing in the opposite direction to the rotation direction of the granulation barrel 1. The vertical distance between the horizontal section 1202 and the bottom surface of the granulation barrel 1 is not more than 5 mm.

[0171] Application Example 1

[0172] The device described in Example 15 was applied to the granulation of fine iron ore. The particle size of the granulated material required for production was 3 mm. The average initial angle α0 between the upper surface of the propeller blade 202 and the horizontal plane was adjusted to 24°. The initial rotation speed Z0 of the granulating paddle shaft 201 was set to 200 r / min. The material was transported into the granulating barrel 1. The granulating barrel drive system was started to drive the granulating barrel 1 to rotate along its own axis. At the same time, the granulating paddle drive device 203 was started to drive the granulating paddle shaft 201 and the propeller blade 202 to rotate in the direction opposite to the rotation direction of the granulating barrel 1. After the granulation was completed, the granulated material was obtained. The average particle size of the granulated material was detected to be d0 = 5 mm. The rotation speed of the granulating paddle shaft 201 was adjusted:

[0173] Since d0>150%d max ,

[0174] The value of k1 is 0.7, and the rotation speed of the granulating paddle shaft 201 is adjusted to 106.6 r / min, so that the particle size of the granulated material meets the production requirements.

[0175] Application Example 2

[0176] The device described in Example 15 was applied to the granulation of fine iron ore. The particle size of the granulated material required for production was 5 mm. The average initial angle α0 between the upper surface of the propeller blade 202 and the horizontal plane was adjusted to 35°. The initial rotation speed Z0 of the granulating paddle shaft 201 was set to 220 r / min. The material was transported into the granulating barrel 1. The granulating barrel drive system was started to drive the granulating barrel 1 to rotate along its own axis. At the same time, the granulating paddle drive device 203 was started to drive the granulating paddle shaft 201 and the propeller blade 202 to rotate in the direction opposite to the rotation direction of the granulating barrel 1. After the granulation was completed, the granulated material was obtained. The average particle size of the granulated material was detected to be d0 = 7 mm. The rotation speed of the granulating paddle shaft 201 was adjusted:

[0177] Since 130%d max <d0≤150%d max ,

[0178] The value of k2 is 0.45, and the rotation speed of the granulating paddle shaft 201 is adjusted to 180.4 r / min, so that the particle size of the granulated material meets the production requirements.

[0179] Application Example 3

[0180] The device described in Example 15 was applied to the granulation of fine iron ore. The particle size of the granulated material required for production was 7 mm. The average initial angle α0 between the upper surface of the propeller blade 202 and the horizontal plane was adjusted to 40°. The initial rotation speed Z0 of the granulating paddle shaft 201 was set to 260 r / min. The material was transported into the granulating barrel 1. The granulating barrel drive system was started to drive the granulating barrel 1 to rotate along its own axis. At the same time, the granulating paddle drive device 203 was started to drive the granulating paddle shaft 201 and the propeller blade 202 to rotate in the direction opposite to the rotation direction of the granulating barrel 1. After the granulation was completed, the granulated material was obtained. The average particle size of the granulated material was detected to be d0 = 9 mm. The rotation speed of the granulating paddle shaft 201 was adjusted:

[0181]

[0182] The value of k3 is 0.3, and the rotation speed of the granulating paddle shaft 201 is adjusted to 185.7 r / min, so that the particle size of the granulated material meets the production requirements.

[0183] Application Example 4

[0184] The apparatus described in Example 15 was applied to the granulation of fine iron ore. The particle size range of the granulated material required for production was 6 mm. The average initial angle α0 between the upper surface of the propeller blade 202 and the horizontal plane was adjusted to 38°, and the initial rotation speed Z0 of the granulating paddle shaft 201 was set to 162 r / min. The material was conveyed into the granulating barrel 1. The granulating barrel drive system was activated to drive the granulating barrel 1 to rotate along its own axis. Simultaneously, the granulating paddle drive device 203 was activated to drive the granulating paddle shaft 201 and propeller blade 202 to rotate in a direction opposite to the rotation direction of the granulating barrel 1. After granulation was completed, granulated material was obtained. The average particle size d0 of the granulated material was measured to be 6 mm, which met the production requirements.

[0185] Application Example 5

[0186] The device described in Example 15 was applied to the granulation of fine iron ore. The particle size of the granulated material required for production was 9 mm. The average initial angle α0 between the upper surface of the propeller blade 202 and the horizontal plane was adjusted to 50°. The initial rotation speed Z0 of the granulating paddle shaft 201 was set to 200 r / min. The material was transported into the granulating barrel 1. The granulating barrel drive system was started to drive the granulating barrel 1 to rotate along its own axis. At the same time, the granulating paddle drive device 203 was started to drive the granulating paddle shaft 201 and the propeller blade 202 to rotate in the direction opposite to the rotation direction of the granulating barrel 1. After the granulation was completed, the granulated material was obtained. The average particle size of the granulated material was detected to be d0 = 6 mm. The rotation speed of the granulating paddle shaft 201 was adjusted:

[0187] Since 50%d min <d0≤80%d min ,

[0188] The value of k5 is 0.65, and the rotation speed of the granulating paddle shaft 201 is adjusted to 243.3 r / min, so that the particle size of the granulated material meets the production requirements.

[0189] Application Example 6

[0190] The device described in Example 15 was applied to the granulation of fine iron ore. The particle size of the granulated material required for production was 7 mm. The average initial angle α0 between the upper surface of the propeller blade 202 and the horizontal plane was adjusted to 57°. The initial rotation speed Z0 of the granulating paddle shaft 201 was set to 180 r / min. The material was transported into the granulating barrel 1. The granulating barrel drive system was started to drive the granulating barrel 1 to rotate along its own axis. At the same time, the granulating paddle drive device 203 was started to drive the granulating paddle shaft 201 and the propeller blade 202 to rotate in the direction opposite to the rotation direction of the granulating barrel 1. After the granulation was completed, the granulated material was obtained. The average particle size of the granulated material was detected to be d0 = 6 mm. The rotation speed of the granulating paddle shaft 201 was adjusted:

[0191] Since 80% d min <d0<d min ,

[0192] The value of k6 is 0.25, and the rotation speed of the granulating paddle shaft 201 is adjusted to 186.4 r / min, so that the particle size of the granulated material meets the production requirements.

[0193] Application Example 7

[0194] The device described in Example 15 was applied to the granulation of fine iron ore. The particle size of the granulated material required for production was 5 mm. The average initial angle α0 between the upper surface of the propeller blade 202 and the horizontal plane was adjusted to 35°. The initial rotation speed Z0 of the granulating paddle shaft 201 was set to 160 r / min. The material was transported into the granulating barrel 1. The granulating barrel drive system was started to drive the granulating barrel 1 to rotate along its own axis. At the same time, the granulating paddle drive device 203 was started to drive the granulating paddle shaft 201 and the propeller blade 202 to rotate in the direction opposite to the rotation direction of the granulating barrel 1. After the granulation was completed, the granulated material was obtained. The average particle size of the granulated material was detected to be d0 = 2 mm. The rotation speed of the granulating paddle shaft 201 was adjusted:

[0195] Since d0≤50%d min ,

[0196] The value of k4 is 1, and the rotation speed of the granulating paddle shaft 201 is adjusted to 256 r / min, so that the particle size of the granulated material meets the production requirements.

Claims

1. A propeller blade disturbance enhanced granulation system, characterized by: The system comprises a granulating barrel (1), a granulating device (2) and a frame (3); the granulating barrel (1) is a cylindrical structure, the frame (3) is a frame structure, and the granulating barrel (1) is arranged in the frame (3); the granulating device (2) comprises a granulating paddle shaft (201), a propeller blade (202) and a granulating paddle driving device (203); the granulating paddle shaft (201) and the propeller blade (202) are both arranged in the interior of the granulating barrel (1), and the granulating paddle driving device (203) is arranged on the frame (3); the top end of the granulating paddle shaft (201) is connected to the granulating paddle driving device (203); the propeller blade (202) is arranged in a spiral shape around the outer surface of the granulating paddle shaft (201), and spirals and rises from the bottom end of the granulating paddle shaft (201) to the top of the granulating paddle shaft (201). 201); a granulating paddle driving device (203) drives the granulating paddle shaft (201) to rotate; the granulating paddle shaft (201) is eccentrically arranged inside the granulating barrel body (1); the system also includes a slewing bearing (4) and a granulating barrel driving system (5); the bottom of the granulating barrel body (1) and the bottom of the frame (3) are connected via the slewing bearing (4); the granulating barrel driving system (5) is arranged on one side of the outside of the frame (3) and is connected to the slewing bearing (4); the granulating barrel driving system (5) drives the slewing bearing (4) to rotate the granulating barrel body (1) around its own axis in the frame (3); the average particle size of the granulated material is detected as d0; according to the size of d0, the rotation speed of the granulating paddle shaft (201) is adjusted so that the particle size of the granulated material meets the actual production needs.

2. The system according to claim 1, wherein: The included angle α between the upper surface of the propeller blade (202) and the horizontal plane is an acute angle of 0-90°.

3. The system according to claim 2, characterized in that: The included angle α between the upper surface of the propeller blade (202) and the horizontal plane is 5-85°.

4. The system according to claim 3, wherein: The included angle α between the upper surface of the propeller blade (202) and the horizontal plane is 10-80°.

5. The system according to claim 4, characterized in that: The included angle α between the upper surface of the propeller blade (202) and the horizontal plane is 15-75°.

6. The system according to claim 5, characterized in that: The included angle α between the upper surface of the propeller blade (202) and the horizontal plane is 20-70°.

7. The system according to claim 2, characterized in that: The included angle α between the upper surface of the propeller blade (202) and the horizontal plane gradually decreases or increases from top to bottom.

8. The system according to claim 7, characterized in that: The gradually decreasing or gradually increasing is an arithmetic difference change.

9. The system according to claim 1, wherein: The granulating paddle shaft (201) is provided with n propeller blades (202); the n propeller blades (202) are all arranged in a parallel spiral arrangement around the granulating paddle shaft (201); wherein 1≤n≤20, and n is an integer.

10. The system according to claim 9, characterized in that: 2≤n≤15。 11. The system according to claim 10, characterized in that: 3≤n≤10。 12. The system according to claim 9, wherein: The radius of the propeller blade (202) gradually increases from top to bottom.

13. The system according to any one of claims 1 to 12, characterized in that: The device further comprises a feeding mechanism (6), a discharging mechanism (7), a fixed support (8) and a base (9); the feeding mechanism (6) is arranged on the top of the granulating barrel (1); the discharging mechanism (7) is arranged at the bottom of the granulating barrel (1); the fixed support (8) is arranged below the frame (3) and is connected to the frame (3) via an adjustable bracket (10); the base (9) is arranged below the fixed support (8), and a weighing sensor (11) is connected between the fixed support (8) and the base (9).

14. The system according to claim 13, wherein: The unloading mechanism (7) comprises a unloading disc (701), a push rod (702) and a unloading drive mechanism (703); the unloading drive mechanism (703) is connected to the unloading disc (701) via the push rod (702), that is, the unloading drive mechanism (703) drives the push rod (702) to control the opening of the unloading disc (701); a motor (704) is further provided below the unloading disc (701), and the motor (704) can drive the unloading disc (701) to rotate.

15. The system according to any one of claims 1 to 12 and 14, characterized in that: The granulation barrel (1) is arranged in an inclined manner; the angle γ formed by the axis of the granulation barrel (1) and the horizontal direction is 5-60°.

16. The system according to claim 13, wherein: The granulation barrel (1) is arranged in an inclined manner; the angle γ formed by the axis of the granulation barrel (1) and the horizontal direction is 5-60°.

17. The system according to claim 15, characterized in that: γ is 8-50°.

18. The system according to claim 16, wherein: γ is 8-50°.

19. The system according to claim 17 or 18, characterized in that: γ is 10-45°.

20. The system according to claim 15, wherein: The rotation direction of the granulating paddle shaft (201) along its own axis is opposite to the rotation direction of the granulating barrel (1) along its own axis.

21. The system according to claim 16, wherein: The rotation direction of the granulating paddle shaft (201) along its own axis is opposite to the rotation direction of the granulating barrel (1) along its own axis.

22. The system according to claim 20 or 21, characterized in that: The rotation speed of the granulating paddle shaft (201) is 50 r / min to 1000 r / min; the rotation speed of the granulating barrel (1) is 2 r / min to 20 r / min.

23. The system according to claim 22, characterized in that: The rotation speed of the granulating paddle shaft (201) is 80 r / min to 600 r / min; the rotation speed of the granulating barrel (1) is 4 r / min to 10 r / min.

24. The system according to claim 23, wherein: The rotation speed of the granulating paddle shaft (201) is 100 r / min to 400 r / min; the rotation speed of the granulating barrel (1) is 6 r / min to 8 r / min.

25. The system according to any one of claims 1-12, 14, 16-18, 20-21, 23-24, characterized in that: The device further comprises a scraper (12); the scraper (12) comprises a vertical section (1201) and a horizontal section (1202); the top end of the vertical section (1201) passes through the top of the granulating barrel (1) and is fixedly connected to the frame (3); one end of the horizontal section (1202) is vertically connected to the bottom end of the vertical section (1201), and the other end thereof points in the axial direction of the granulating barrel (1); the surfaces from the blade to the back of the blade of the vertical section (1201) and the horizontal section (1202) are both inclined surfaces facing in the opposite direction to the rotation direction of the granulating barrel (1).

26. The system according to claim 13, wherein: The device further comprises a scraper (12); the scraper (12) comprises a vertical section (1201) and a horizontal section (1202); the top end of the vertical section (1201) passes through the top of the granulating barrel (1) and is fixedly connected to the frame (3); one end of the horizontal section (1202) is vertically connected to the bottom end of the vertical section (1201), and the other end thereof points in the axial direction of the granulating barrel (1); the surfaces from the blade to the back of the blade of the vertical section (1201) and the horizontal section (1202) are both inclined surfaces facing in the opposite direction to the rotation direction of the granulating barrel (1).

27. The system according to claim 25, characterized in that: The vertical distance between the horizontal section (1202) and the bottom surface of the granulation barrel (1) is no more than 10 mm.

28. The system according to claim 26, wherein: The vertical distance between the horizontal section (1202) and the bottom surface of the granulation barrel (1) is no more than 10 mm.

29. The system according to claim 27 or 28, characterized in that: The vertical distance between the horizontal section (1202) and the bottom surface of the granulation barrel (1) is no more than 8 mm.

30. The system according to claim 29, wherein: The vertical distance between the horizontal section (1202) and the bottom surface of the granulation barrel (1) is no more than 5 mm.

31. A method for enhanced granulation using the propeller blade disturbance enhanced granulation system according to any one of claims 1 to 30, the method comprising the following steps: 1) According to actual production needs, the initial rotation speed of the granulating paddle shaft (201) is adjusted to Z0, r / min; the average value of the initial angle between the upper surface of the propeller blade (202) and the horizontal plane is adjusted to α0,°; 2) conveying the material into the granulation barrel (1), starting the granulation barrel drive system (5) to drive the granulation barrel (1) to rotate along its own axis, and simultaneously starting the granulation paddle drive device (203) to drive the granulation paddle shaft (201) and the granulation paddle (202) to rotate in a direction opposite to the rotation direction of the granulation barrel (1); after the granulation is completed, the granulated material is obtained; 3) detecting the average particle size of the granulated material as d0; and adjusting the rotation speed of the granulating paddle shaft (201) according to the size of d0 so that the particle size of the granulated material meets actual production needs.

32. The method according to claim 31, characterized in that: The method further comprises: in step 1), adjusting the initial rotation speed of the granulating paddle shaft (201) to Z0: 50 r / min to 1000 r / min; and / or The average value of the initial angle between the upper surface of the granulating blade (202) and the horizontal plane is adjusted to α0: 101) When the average particle size d0 of the granulated material required for actual production is ≤1mm, 0°<α0≤8° or 80°≤α0<90°; 102) When the average particle size of the granulated material required for actual production is 1mm<d0≤3mm, 8°<α0≤18° or 70°≤α0<80°; 103) When the average particle size of the granulated material required for actual production is 3mm<d0≤5mm, 18°<α0≤36° or 60°≤α0<70°; 104) When the average particle size of the granulated material required for actual production is 5mm<d0≤8mm, 36°<α0≤45° or 55°≤α0<60°; 105) When the average particle size of the granulated material required for actual production is 8mm<d0, 45°<α0<55°.

33. The method according to claim 32, wherein: The method further comprises: in step 1), adjusting the initial rotation speed of the granulating paddle shaft (201) to Z0: 80 r / min to 600 r / min.

34. The method according to claim 33, wherein: The method further comprises: in step 1), adjusting the initial rotation speed of the granulating paddle shaft (201) to Z0: 100 r / min to 400 r / min.

35. The method according to claim 34, wherein: The method further comprises: in step 1), adjusting the initial rotation speed of the granulating paddle shaft (201) to Z0: 150 r / min-300 r / min.

36. The method according to claim 32, wherein: The average value of the initial angle α0 between the upper surface of the granulating blade (202) and the horizontal plane is: A) when the angle α between the upper surface of all granulating blades (202) and the horizontal plane is the same, α0=α; when the change value of the value of α0 needs to be adjusted by △α, the change value of the angle α between the upper surface of all granulating blades (202) and the horizontal plane needs to be adjusted by △α; B) When the angle α between the upper surface of all the granulating blades (202) and the horizontal plane changes gradually decreasing or increasing layer by layer, it is assumed that the angle between the upper surface of each layer of the granulating blades (202) and the horizontal plane in the n layers of granulating blades (202) from top to bottom is α1, α2, α3, ···, α n ;Then α0=(α1+α1+α3+···+α n ) / n; when the change value of the value of α0 that needs to be adjusted is △α, the change value of the angle α between the upper surface of all the granulating blades (202) and the horizontal plane needs to be adjusted to △α.

37. The method according to claim 32, wherein: Step 3) is specifically as follows: setting the average particle size range of the granulated material required for actual production to [d min , d max ]; the average particle size of the granulated material discharged by the discharging mechanism (7) is detected and recorded as d0; 301) When d0>d max When the rotation speed of the granulating paddle shaft (201) is reduced until d0∈[d min , d max ]; 302) When d min ≤d0≤d max When , maintain the current state unchanged; 303) When d0<d min When the rotation speed of the granulating paddle shaft (201) is increased until d0∈[d min , d max ].

38. The method according to claim 37, wherein: Step 301) is specifically as follows: 301a) When d0>150%d max hour, 301b) When 130% d max <d0≤150%d max hour, 301c) when d max <d0≤130%d max hour, Among them, k1, k2, and k3 are speed adjustment coefficients, the value range of k1 is 0.65 to 0.9, the value range of k2 is 0.35 to 0.65, and the value range of k3 is 0.1 to 0.35; Z0 is the initial speed of the granulating paddle shaft (201), and Z1 is the speed of the granulating paddle shaft (201) after adjustment; the size of d0 is detected in real time, and the particle size of the granulated material is controlled to meet production requirements by adjusting the speed of the granulating paddle shaft (201).

39. The method according to claim 37 or 38, wherein: Step 303) is specifically as follows: 303a) When d0≤50%d min hour, 303b) When 50% d min <d0≤80%d min hour, 303c) When 80% d min <d0<d min hour, Among them, k4, k5, and k6 are speed adjustment coefficients, the value range of k4 is 0.9 to 1.2, the value range of k5 is 0.5 to 0.9, and the value range of k6 is 0.15 to 0.5; Z0 is the initial speed of the granulating paddle shaft (201), and Z1 is the speed of the granulating paddle shaft (201) after adjustment; the size of d0 is detected in real time, and the speed of the granulating paddle shaft (201) is adjusted to control the particle size of the granulated material to meet production requirements.

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