An efficient granulator

Abstract

The present invention discloses an efficient granulator, which includes a box body, a feed hopper, a power device, a drum, a screen and a discharge hopper. A power chamber and a granulation chamber are arranged inside the box body. The power device is arranged in the power chamber. The feed hopper is fixed at the top of the granulation chamber. The drum is located at the bottom of the feed hopper and is sleeved on a rotating shaft. One end of the rotating shaft is connected to the power device, and the other end is fixed to one side of the box body away from the power chamber. The screen is located at the bottom of the drum and is detachably installed on the box body through a screen adjusting component. Knife rods are fixed on the outer circumferential wall of the drum along the axial direction of the rotating shaft, and a gap is left between the knife rods and the screen. The discharge hopper is fixed at the bottom of the box body. A plurality of air blowing ports are formed in the knife rods and are communicated with an external air source. In the efficient granulator disclosed by the present invention, the air blowing ports are arranged on the knife rods and directly blow on the screen holes of the screen, improving the adhesion and blockage conditions of the screen holes. At the same time, the screen can be quickly disassembled, improving the working efficiency of the granulator.

Description

Technical Field

[0001] The present invention relates to the technical field of pharmaceutical machinery and equipment, and more specifically to a high-efficiency granulator. Background Art

[0002] A granulator refers to a device that can grind wet powder materials or blocky dry materials into required granular materials. It mainly makes wet powder mixtures pass through a sieve mesh compulsively under the action of the rotation of a rotating drum to form granular materials. It includes a frame, a feed hopper is arranged at the top of the frame, a drum is installed below the feed inlet, a sieve mesh is connected to the bottom of the drum. By means of the rotation of the rotating drum, wet powder raw materials are extruded through the sieve mesh to form granules. Granulators are widely used in the pharmaceutical field for preparing granular drugs.

[0003] However, when the existing granulator extrudes materials, due to the relatively high humidity of the materials, when passing through the sieve mesh, it is easy to adhere to the sieve mesh, causing the mesh holes of the sieve mesh to be blocked, seriously affecting the production efficiency, and the sieve mesh needs to be cleaned frequently; moreover, when disassembling the sieve mesh for cleaning or installing the sieve mesh for production, usually due to the existing box structure, when cleaning the sieve mesh, the receiving hopper below the receiving box must be removed, and tools such as screwdrivers are needed to remove fasteners such as screws for installing the sieve mesh, which is time-consuming and laborious.

[0004] Therefore, how to provide a high-efficiency granulator that can improve production efficiency is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention aims to solve at least one of the above technical problems in the prior art to a certain extent.

[0006] To achieve the above object, an object of the present invention is to provide a high-efficiency granulator, including a box body, a feed hopper, a power device, a drum, a sieve mesh and a discharge hopper. A power chamber and a granulation chamber are separated and arranged inside the box body. The power device is arranged in the power chamber. The feed hopper is fixed to the top of the granulation chamber. The drum is located at the bottom of the feed hopper and is sleeved on a rotating shaft. One end of the rotating shaft is connected to the power device, and the other end is fixed to the side of the box body away from the power chamber; the sieve mesh is located below the drum and is detachably installed on the box body through a sieve mesh adjustment assembly; the drum includes ends and a plurality of cutter bars evenly distributed along the axial direction of the rotating shaft. Both ends of the cutter bar are fixed between the ends. A gap is left between the cutter surface of the cutter bar and the sieve mesh; the discharge hopper is fixed to the bottom of the box body; a first ventilation hole is opened at the end of the drum, a second ventilation hole is opened in the rotating shaft, and a plurality of air blowing ports are opened on the cutter bar. The air blowing ports are sequentially communicated with an external air source through the first ventilation hole and the second ventilation hole.

[0007] In the high-efficiency granulator disclosed by the present invention, the rotating shaft on one side of the box body is connected to the power device, and the other end is fixed to the other side of the box body by an end cover, playing a role in supporting and driving corresponding to the other end of the drum. A certain gap is ensured between the screen mesh and the cutting surface of the drum. The material is formed through cutting and extrusion by the holes of the screen mesh and enters the discharge hopper communicated with the bottom of the box body 1. The external air source provides a clean air source system, so that the pressurized clean gas passes through the second ventilation hole and the first ventilation hole and is directly blown onto the screen holes on the screen mesh through the air blowing ports on the cutting surface, improving the adhesion and blockage conditions of the screen holes of the screen mesh, being easy to clean and wash, and improving the production efficiency.

[0008] Preferably, there are two screen mesh adjusting components, which are symmetrically arranged. Each screen mesh adjusting component includes a handwheel, a ratchet wheel, an eccentric shaft, a ratchet wheel limiting mechanism, a bearing plate, a guide plate and a pull plate. The eccentric shaft is horizontally rotatably installed on the opposite side walls of the box body and includes a small shaft section and a large shaft section integrally connected. Its small shaft section is located inside the box body, and its large shaft section passes through one side of the box body. The handwheel and the ratchet wheel are both sleeved and fixed on the large shaft section of the eccentric shaft, and the handwheel is arranged outside the ratchet wheel; the ratchet wheel limiting mechanism is fixed on the box body and is in contact and limit with the ratchet wheel; the bearing plate is suspended on the outer periphery of the eccentric shaft and its top contacts the small shaft section of the eccentric shaft. The guide plate is fixed on the outside of the bottom of the feed hopper and is in sliding contact with the side of the bearing plate away from the eccentric shaft. The pull plate is arranged in a drawable manner between the screen mesh and the bearing plate; Observation doors are hinged on both sides of the box body parallel to the rotating shaft.

[0009] The beneficial effects of adopting the above technical solution are that observation doors are hinged on both sides of the box body parallel to the rotating shaft. By loosening the handwheel, the handwheel drives the eccentric shaft to rotate, the bearing plate moves downward, the pull plate is loosened, the pull plate is pulled out, the screen mesh can move downward, break away from the drum, open the observation doors on both sides, and take out the screen mesh; By rotating the handwheel, the disassembly of the screen mesh can be quickly realized for cleaning, which is time-saving and labor-saving. Similarly, when installing the screen mesh, tighten the handwheel, the eccentric shaft rotates, the bearing plate moves upward, the inserted pull plate is clamped, thereby driving the screen mesh to move upward. When the gap is appropriate, the ratchet wheel limiting mechanism limits the ratchet wheel, and at the same time the position of the handwheel is fixed, playing a role in fixing the screen mesh and adjusting the gap between the screen mesh and the drum to meet the working requirements.

[0010] Preferably, the ratchet wheel limiting mechanism includes a tension spring and a limiting plate. One end of the tension spring is fixed on the box body, and the other end is fixedly connected to the limiting plate. The other end of the limiting plate is fixed on the box body, and a pawl is arranged on the limiting plate. The pawl is in contact and limit with the ratchet wheel.

[0011] The beneficial effects of adopting the above technical solution are that the tension spring plays a role in adjusting the position of the limit plate, and the ratchet pawl contacts and limits the ratchet wheel to ensure that the position remains unchanged after the gap between the screen and the drum is adjusted, so as to meet the requirements of normal operation.

[0012] Preferably, the bearing plate includes a top plate, side plates, an eccentric shaft contact part and a pull plate bearing part. The top plate is connected to one side of the top of the side plates and is located inside and above the eccentric shaft. The eccentric shaft contact part is arranged at the bottom of the top plate, and its bottom surface is arc-shaped. There are multiple pull plate bearing parts, which are arranged at intervals at the bottom of the side plates opposite to one side of the top plate. The side plates are in sliding contact with the guide plate. The screen is a semi-cylindrical shape with a convex surface facing downwards, and outer edge protrusions are arranged at intervals along both axial sides. The pull plate bearing parts are assembled in an alternating manner with the outer edges. And the pull plate is pulled between the top surface of the pull plate bearing part and the bottom surface of the outer edge protrusion.

[0013] The beneficial effects of adopting the above technical solution are that the side plates of the bearing plate are vertically arranged, the top plate is horizontally arranged perpendicular to the side plates. At the same time, the side of the bearing plate away from the top plate is in contact with the guide plate, and the guide plate is fixedly connected to the feed hopper. The arrangement of the guide plate ensures that the bearing plate moves up and down when the eccentric shaft rotates, rather than rotating with the eccentric shaft.

[0014] Preferably, the power device includes a driving motor and a speed reducer. The driving motor is connected to the speed reducer, and the output shaft of the speed reducer is connected to the rotating shaft through a coupling.

[0015] The beneficial effects of adopting the above technical solution are that the motor and the speed reducer provide power for the rotation of the rotating shaft, drive the rotating shaft to rotate, and then drive the drum to rotate. The cutter bars on the outer circumferential wall of the drum strengthen the extrusion effect on the material, so that the material quickly passes through the screen to form particles.

[0016] Preferably, there are multiple cutter bars, which are evenly distributed on the outer circumference of the drum. And at least one of the cutter bars has a blowing port on its cutter surface, and a gas guiding groove is axially arranged inside it. One side of the gas guiding groove communicates with the first ventilation hole, and the other side communicates with multiple blowing ports.

[0017] The beneficial effects of adopting the above technical solution are that the gas guiding groove is connected to the first ventilation hole, which is the main gas path. Multiple blowing ports are evenly distributed on the cutter surface of the cutter bar, which are the branch gas paths. While the drum rotates, the multiple blowing ports on the cutter bar blow air to form a blowing surface to clean and dredge the sieve holes of the screen, and extend the cleaning cycle of the screen.

[0018] Preferably, a rotary joint is installed on the box body at the position corresponding to the second ventilation hole. An external air pipe is connected to the outside of the rotary joint, and the external gas source is communicated with the second ventilation hole through the external air pipe and the rotary joint.

[0019] The beneficial effects of adopting the above technical solution are that the setting of the rotary joint ensures that the external air pipe does not rotate when the internal rotating shaft rotates, and at the same time, it can ensure the smoothness of the air path.

[0020] Preferably, a right-angle joint is provided at the connection of the first ventilation hole and the second ventilation hole.

[0021] The beneficial effects of adopting the above technical solution are that the setting of the right-angle joint helps to make the air path smoother.

[0022] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an efficient granulator, which avoids the adhesion and blockage of the screen, prolongs the cycle of screen cleaning, and at the same time, the installation and disassembly of the screen are convenient and fast, improving the production efficiency. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0024] Figure 1 The drawing is the front view of the efficient granulator provided by the present invention.

[0025] Figure 2 The drawing is the left view of the efficient granulator provided by the present invention.

[0026] Figure 3 The drawing is the A-A cross-sectional view of the efficient granulator provided by the present invention.

[0027] Figure 4 The drawing is the B-B cross-sectional view of the efficient granulator provided by the present invention.

[0028] Figure 5 The drawing is the structural schematic diagram of the bearing plate provided by the present invention.

[0029] Figure 6 The drawing is the structural schematic diagram of the screen provided by the present invention.

[0030] Figure 7 The drawing is the structural schematic diagram of the drum provided by the present invention.

[0031] Figure 8 The drawing is the structural schematic diagram of the pull plate provided by the present invention.

[0032] Figure 9 The drawing is the enlarged view of C provided by the present invention.

[0033] Figure 10 The attached drawing is a cross-sectional view of the tool shank provided by the present invention.

[0034] Among them, the reference numerals of each attached drawing are as follows:

[0035] 1 - box body, 2 - feed hopper, 3 - power device, 4 - drum, 5 - screen, 6 - discharge hopper, 7 - rotating shaft, 8 - handwheel, 9 - ratchet, 10 - eccentric shaft, 11 - bearing plate, 12 - pull plate, 13 - observation door, 14 - tension spring, 15 - limiting plate, 16 - ratchet pawl, 17 - rotary joint, 18 - external air pipe, 19 - right-angle joint; 20 - guide plate.

[0036] 31 - drive motor, 32 - reducer, 33 - coupling;

[0037] 41 - tool shank, 411 - air blowing port, 412 - air guiding groove, 42 - first ventilation hole;

[0038] 51 - outer edge, 71 - second ventilation hole;

[0039] 111 - top plate, 112 - side plate, 113 - eccentric shaft contact part, 114 - pull plate bearing part. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0041] An embodiment of the present invention discloses an efficient granulator, including a box body 1, a feed hopper 2, a power device 3, a drum 4, a screen 5 and a discharge hopper 6. A power chamber and a granulation chamber are separatedly arranged inside the box body 1. A power device 3 is arranged in the power chamber. A feed hopper 2 is fixed on the top of the granulation chamber. The drum 4 is located at the bottom of the feed hopper 2 and is sleeved on the rotating shaft 7. One end of the rotating shaft 7 is connected to the power device 3, and the other end is fixed on one side of the box body 1 away from the power chamber; the screen 5 is located below the drum 4 and is detachably installed on the box body 1 through a screen adjustment assembly; the drum 4 includes two ends and a plurality of tool shanks 41 fixed on the outer circumferential wall along the axial direction of the rotating shaft 7. The two ends of the tool shank are fixed between the ends. A gap is left between the cutting surface of the tool shank 41 and the screen 5; the discharge hopper 6 is fixed at the bottom of the box body 1; a first ventilation hole 42 is opened inside the end of the drum 4, a second ventilation hole 71 is axially opened inside the rotating shaft 7, and a plurality of air blowing ports 411 are opened on the tool shank 41. The air blowing ports 411 are sequentially communicated with an external air source through the first ventilation hole 42 and the second ventilation hole 71.

[0042] The high-efficiency granulator disclosed in this embodiment has a rotating shaft 7 on one side of the box body 1 connected to the power device 3, and the other end is fixed to the other side of the box body 1 by an end cover, which plays a role in supporting and driving the other end of the roller 4. A certain gap is maintained between the screen and the cutting surface of the roller 4. The material is formed through cutting and extrusion by the screen holes and enters the discharge hopper 6 communicating with the bottom of the box body 1. An external air source provides a clean air source system, so that the pressurized clean gas passes through the second vent hole 71 and the first vent hole 42 and is directly blown onto the screen holes of the screen 5 through the air blowing ports 411 on the cutting surface, improving the adhesion and blockage of the screen holes of the screen, facilitating cleaning and washing, and improving production efficiency.

[0043] In order to further optimize the above technical solution, referring to Figure 4 , there are two screen adjustment assemblies, symmetrically arranged on the corresponding box body 1 on both sides of the screen 5, and each screen adjustment assembly includes a handwheel 8, a ratchet 9, an eccentric shaft 10, a ratchet limit mechanism, a bearing plate 11, a guide plate 20 and a pull plate 12. The eccentric shaft 10 can be horizontally rotatably installed on the opposite side walls of the box body 1, including an integrally connected small shaft section and a large shaft section. The small shaft section is located inside the box body 1, and the large shaft section passes through one side of the box body 1. Both the handwheel 8 and the ratchet 9 are fixedly connected to the large shaft section of the eccentric shaft 10, and the handwheel 8 is arranged outside the ratchet 9; the ratchet limit mechanism is fixed on the box body 1 and contacts and limits the ratchet 9; the bearing plate 11 is suspended on the outer periphery of the eccentric shaft 10, and the top contacts the small shaft section of the eccentric shaft 10. The guide plate 20 is fixed to the outside of the bottom of the feed hopper 2 and is in sliding contact with the side of the bearing plate 11 away from the eccentric shaft 10; the pull plate 12 is arranged in a drawable manner between the screen 5 and the bearing plate 11; Observation doors 13 are hinged on both sides of the box body 1 parallel to the rotating shaft 7.

[0044] Advantageously, observation doors 13 are hinged on both sides of the box body 1 parallel to the rotating shaft. By loosening the handwheel 8, the handwheel 8 drives the eccentric shaft 10 to rotate, the bearing plate 11 moves downward, the pull plate 12 is loosened, the pull plate 12 is extracted, the screen 5 can move downward, disengaging from the roller 4, the observation doors 13 on both sides are opened, and the screen 5 is taken out; the disassembly of the screen 5 can be quickly realized by rotating the handwheel 8 for cleaning, which is time-saving and labor-saving. Similarly, when installing the screen 5, tighten the handwheel 8, the eccentric shaft 10 rotates, the bearing plate 11 moves upward, so that the inserted pull plate 12 is clamped, thereby driving the screen 5 to move upward. When the gap is appropriate, the ratchet limit mechanism limits the ratchet 9, and at the same time the position of the handwheel 8 is fixed, which plays a role in fixing the screen 5 and adjusting the gap between the screen 5 and the roller 4 to meet the working requirements.

[0045] Specifically, referring to Figure 2, the ratchet limit mechanism includes a tension spring 14 and a limit plate 15. One end of the tension spring 14 is fixed to the box body 1, the other end is fixedly connected to the limit plate 15, the other end of the limit plate 15 is fixed to the box body 1, and a pawl 16 is provided on the limit plate 15. The pawl 16 contacts and limits the ratchet 9.

[0046] Advantageously, when the screen 5 is cleaned and reinstalled, the handwheel 8 is tightened, the eccentric shaft 10 rotates, the bearing plate 11 moves upward, the inserted pull plate 12 is clamped, so as to drive the screen 5 to move upward. When the gap is appropriate, the tension spring 14 plays a role in adjusting the position of the limit plate 15, and the pawl 16 engages with the ratchet teeth of the ratchet 9 for contact limit, so as to ensure that the position remains unchanged after the gap between the screen 5 and the drum 4 is adjusted, and the normal operation requirements are met.

[0047] To further optimize the above technical solution, the bearing plate 11 includes a top plate 111, side plates 112, an eccentric shaft contact portion 113 and a pull plate bearing portion 114. The top plate 111 is connected to the top side of the side plates 112 and is located above the eccentric shaft 10. The eccentric shaft contact portion 113 is arranged at the bottom of the top plate 111, and its bottom surface is arc-shaped; there are multiple pull plate bearing portions 114, which are arranged at intervals on the bottom of the side plates 112 corresponding to one side of the top plate 111. The side plates 112 are in sliding contact with the guide plate 20. Refer to Figure 6 , the screen 5 is a semi-cylindrical shape with the convex surface facing downwards, and outer edge bumps 51 are arranged at intervals along both axial sides. The pull plate bearing portions 114 are assembled in an alternating manner with the outer edges 51; and the pull plate 12 is pulled between the top surface of the pull plate bearing portion 114 and the bottom surface of the outer edge 51.

[0048] Advantageously, the side plates 112 of the bearing plate are vertically arranged, the top plate 111 is horizontally arranged perpendicular to the side plates 112. At the same time, the side of the bearing plate side plates 112 away from the top plate 111 is in contact with the guide plate 20. The guide plate 20 is fixedly connected to the feed hopper 2. The arrangement of the guide plate 20 ensures that the bearing plate 11 moves up and down when the eccentric shaft 10 rotates, rather than rotating with the eccentric shaft 10.

[0049] The power device 3 includes a driving motor 31 and a speed reducer 32. The driving motor 31 is connected to the speed reducer 32. The output shaft of the speed reducer 32 is connected to the rotating shaft 7 through a coupling 33. The motor 31 and the speed reducer 32 provide power for the rotation of the rotating shaft 7, drive the rotating shaft 7 to rotate, thereby driving the drum 4 to rotate. The cutter bars 41 on the outer circumferential wall of the drum 4 strengthen the extrusion effect on the material 1, so that the material quickly forms particles through the screen 5.

[0050] Furthermore, refer to Figure 6, there are multiple tool bars 41 evenly distributed on the outer periphery of the drum 4, and at least one air blowing port 411 is provided on the tool face of the tool bar 41, and an air guiding groove 412 is axially formed inside thereof. One side of the air guiding groove 412 communicates with the first ventilation hole 42, and the other side communicates with a plurality of air blowing ports 411.

[0051] The air guiding groove 412 communicates with the first ventilation hole 42, which is the main air path. A plurality of air blowing ports 411 are evenly distributed on the tool face of the tool bar 41, which are branch air paths. While the drum 4 rotates, the plurality of air blowing ports 411 on the tool bar 41 blow air to form a purging surface to clean and dredge the sieve holes of the sieve mesh 5, and extend the cleaning cycle of the sieve mesh 5.

[0052] A rotary joint 17 is installed on the box body 1 at the position corresponding to the second ventilation hole 71. An external air pipe 18 is connected to the outside of the rotary joint 17. The external air source is communicated with the second ventilation hole 71 through the external air pipe 18 and the rotary joint 17. The setting of the rotary joint 17 ensures that the external air pipe 18 will not rotate along with the internal rotating shaft 7 when the internal rotating shaft 7 rotates, and at the same time can ensure the smoothness of the air path.

[0053] A right-angle joint 19 is provided at the connection of the first ventilation hole 42 and the second ventilation hole 71. The setting of the right-angle joint 19 helps to make the air path smoother.

[0054] The working principle of the high-efficiency granulator disclosed in the embodiment of the present invention is as follows: Materials are added from the feed hopper 2, the driving motor 31 rotates, and after passing through the reducer 32 and the coupling 33, the rotating shaft 7 rotates together. The drum 4 rotates forward and backward to frictionally extrude the materials on the sieve mesh 5, and the materials are extruded from the sieve holes of the sieve mesh 5 and fall into the discharge hopper 6. During the working process, the extrusion effect of the tool bar 4 on the outer circumferential wall of the drum 4 enables the materials to pass through the sieve mesh 5 to form particles more quickly, improving the particle forming speed; The tool bar 4 is provided with air blowing ports 411, and the air blowing ports 411 are communicated with the outside air source. The outside air source provides clean gas with pressure, which passes through the second ventilation hole 71 inside the rotating shaft 7 and the first ventilation hole 42 inside the drum, and diffuses to a plurality of air blowing ports 411 through the air guiding groove 412. The air blowing ports 411 directly blow into the sieve holes of the sieve mesh 5, improving the adhesion and blockage conditions of the sieve mesh 5, being easy to clean and wash, and improving the production efficiency.

[0055] When the screen 5 needs to be cleaned, by loosening the handwheel 8, the handwheel 8 drives the eccentric shaft 10 to rotate, the bearing plate 11 displaces downward, the pull plate 12 is loosened, the pull plate 12 is extracted, the screen 5 can displace downward, disengaging from the drum 4, the observation doors 13 on both sides are opened, and the screen 5 is taken out from the observation doors 13; by rotating the handwheel 8, the disassembly of the screen 5 can be quickly realized for cleaning, which is time-saving and labor-saving. Similarly, when installing the screen 5, tighten the handwheel 8, the eccentric shaft 10 rotates, the bearing plate 11 displaces upward, so that the inserted pull plate 12 is clamped, thereby driving the screen 5 to move upward. When the gap is appropriate, the pawl 16 on the limit plate 15 limits the ratchet 9, and at the same time, the position of the handwheel 8 is fixed, which plays a role in fixing the screen 5 and adjusting the gap between the screen 5 and the drum 4 to meet the working requirements. The screen 5 can be quickly disassembled without disassembling the discharge hopper 6, which is time-saving and labor-saving.

[0056] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0057] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An efficient granulator, characterized in that, it includes a box body (1), a feed hopper (2), a power device (3), a drum (4), a screen (5) and a discharge hopper (6). A power chamber and a granulation chamber are separated inside the box body (1). The power device (3) is arranged in the power chamber. The feed hopper (2) is fixed at the top of the granulation chamber. The drum (4) is located at the bottom of the feed hopper (2) and is sleeved on a rotating shaft (7). One end of the rotating shaft (7) is connected to the power device (3), and the other end is rotatably connected to one side of the box body (1) away from the power chamber; the screen (5) is located below the drum (4) and is detachably installed on the box body (1) through a screen adjusting assembly; the drum (4) includes ends and a plurality of cutter bars (41) evenly distributed along the axial direction of the rotating shaft (7). The two ends of the cutter bar (41) are fixed between the ends. There is a gap between the cutter surface of the cutter bar (41) and the screen (5); a plurality of air blowing ports (411) are opened on the cutter surface. A first ventilation hole (42) is opened inside the end of the drum (4). A second ventilation hole (71) is opened along the axial direction inside the rotating shaft (7). The air blowing ports (411) are communicated with an external air source through the first ventilation hole (42) and the second ventilation hole (71) in sequence; the discharge hopper (6) is fixed at the bottom of the box body (1); there are two screen adjusting assemblies, symmetrically arranged on both sides of the screen (5). Each screen adjusting assembly includes a handwheel (8), a ratchet wheel (9), an eccentric shaft (10), a ratchet wheel limiting mechanism, a bearing plate (11), a guide plate (20) and a pull plate (12). The eccentric shaft (10) is horizontally rotatably installed on the opposite side walls of the box body (1), including an integrally connected small shaft section and a large shaft section. Its small shaft section is located inside the box body (1), and its large shaft section penetrates through one side of the box body (1). The handwheel (8) and the ratchet wheel (9) are both sleeved on the large shaft section, and the handwheel (8) is arranged outside the ratchet wheel (9); the ratchet wheel limiting mechanism is fixed on the box body (1) and is in contact limit with the ratchet wheel (9); the bearing plate (11) is suspended on the outer periphery of the eccentric shaft (10), and the top end is in contact with the small shaft section. The guide plate (20) is fixed on the outside of the bottom of the feed hopper (2) and is in sliding contact with the side of the bearing plate (11) away from the eccentric shaft (10). The pull plate (12) is arranged in a drawable manner between the screen (5) and the bearing plate (11); observation doors (13) are hinged on both sides of the box body (1) parallel to the rotating shaft (7); the ratchet wheel limiting mechanism includes a tension spring (14) and a limiting plate (15). One end of the tension spring (14) is fixed on the box body (1), and the other end is fixedly connected to the limiting plate (15). The other end of the limiting plate (15) is fixed on the box body (1), and a pawl (16) is arranged on the limiting plate (15). The pawl (16) is in contact limit with the ratchet wheel (9); The carrier plate (11) includes a top plate (111), side plates (112), an eccentric shaft contact portion (113), and a pull plate bearing portion (114). The top plate (111) is connected to one side of the top of the side plates (112) and is located above the eccentric shaft (10). The eccentric shaft contact portion (113) is provided on the bottom of the top plate (111), and its bottom surface is arc-shaped. The pull plate bearing portions (114) are multiple and are arranged at intervals on one side of the bottom of the side plates (112) corresponding to the top plate (111). The side plates (112) are in sliding contact with the guide plate (20). The sieve (5) is in the shape of a semi-cylindrical tube with a convex surface facing downwards, and outer edge protrusions (51) are arranged at intervals along both axial sides. The pull plate bearing portions (114) and the outer edge protrusions (51) are assembled in an alternating manner. And the pull plate (12) is pulled between the top surface of the pull plate bearing portion (114) and the bottom surface of the outer edge protrusion (51). The sieve (5) is located below the eccentric shaft (10). The side plates (112) are arranged vertically, and the top plate (111) is arranged horizontally perpendicular to the side plates (112). At the same time, one side of the side plates (112) away from the top plate (111) is in contact with the guide plate (20), and the guide plate (20) is fixedly connected to the feed hopper (2).

2. An efficient granulator according to claim 1, characterized in that, The power device (3) includes a driving motor (31) and a speed reducer (32). The driving motor (31) is connected to the speed reducer (32), and the output shaft of the speed reducer (32) is connected to the rotating shaft (7) through a coupling (33).

3. An efficient granulator according to any one of claims 1-2, characterized in that, There are multiple cutter bars (41) and they are evenly distributed on the outer circumference of the drum (4). And at least one of the cutter bars (41) has a blowing port (411) opened on its cutter surface, and an air guide groove (412) is opened inside it along the axial direction. One side of the air guide groove (412) communicates with the first ventilation hole (42), and the other side communicates with multiple blowing ports (411).

4. An efficient granulator according to claim 3, characterized in that, A rotary joint (17) is installed on the box body (1) at a position corresponding to the second ventilation hole (71). The outside of the rotary joint (17) is connected to an external air pipe (18), and an external air source is communicated with the second ventilation hole (71) through the external air pipe (18) and the rotary joint (17).

5. An efficient granulator according to claim 4, characterized in that, A right-angle joint (19) is provided at the connection of the first ventilation hole (42) and the second ventilation hole (71).

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