Drying and granulating device for yam composite powder

Abstract

The present application relates to the technical field of granulating device, specifically to a kind of Chinese yam composite powder drying granulating device, including orifice plate, extrusion chamber, drying chamber and power mechanism, material in extrusion chamber is extruded from orifice plate after being pressed, and enter the inside of drying chamber, still including cylinder, orifice plate divides the space in cylinder into two chambers of upper and lower, the two chambers are extrusion chamber and drying chamber, the bottom of orifice plate is rotatably connected with support.The present application adopts annular cutter and is equipped with self-rotating driving mechanism, compared with traditional fixed square cutter, annular cutter can use larger cutting surface, under the compound motion condition of revolution and step-by-step rotation, overall wear distribution is more balanced, and tool service period is longer;In the process of step-by-step rotation of annular cutter, upper scraper and lower scraper scrape adhering material attached to the upper and lower end faces of annular cutter, effectively avoid the problems caused by material accumulation and thickening of cutter, such as increased frictional resistance, increased equipment operating load, local heat accumulation in cutting area and the like.

Description

Technical Field

[0001] This invention relates to the field of granulation equipment technology, specifically to a yam compound powder drying and granulation device. Background Technology

[0002] Extrusion granulation is one of the mainstream technologies for preparing powder materials. Relying on core processes such as extrusion molding, shearing and granulation, and drying and curing, it processes powdery, microcrystalline and loose granular raw materials into regular solid granular products. It has strong process adaptability and is widely used in pharmaceutical, fine chemical, food processing, metallurgical and building materials industries.

[0003] Chinese Patent No. CN103948511A discloses a granulator for Liushenqu (a type of traditional Chinese medicine) and its granulation method. The invention includes a frame with a gearbox mounted on it. The gearbox is connected to a motor via a belt drive mechanism. A cylindrical screw housing is located outside the gearbox, with a feed inlet on the screw housing. A rotating shaft is located inside the screw housing, and an extrusion screw is mounted on the rotating shaft. A forming mold is mounted at the outer end of the screw housing, with an annular discharge port on the mold. A connecting rod connects to the outer end of the rotating shaft, and a rotating blade is mounted at the end of the connecting rod, corresponding to the discharge port. This invention primarily utilizes a granulator for integrated granulation, employing a mechanical granulation method. This method offers high production efficiency, reduces manual operation, and allows for industrial-scale production. It will further standardize the production process of Liushenqu-type traditional Chinese medicine, further improve the quality standards of Liushenqu-type traditional Chinese medicine, and provide high-quality traditional Chinese medicine with stable quality and definite efficacy for clinical practice. It fills a gap in the production and processing of Liushenqu-type traditional Chinese medicine and will generate significant social and economic benefits.

[0004] During operation, the surface of the cutting blade assembly of this extrusion granulation equipment is prone to material adhesion, scaling and accumulation. The equipment is not equipped with facilities for cleaning the adhering material. If the adhering material is not removed in time, it will lead to increased frictional resistance during equipment operation, increased load on the whole machine, intensified local heat accumulation in the cutting area, abnormal temperature rise, and even quality defects such as adhesion, clumping and merging of finished particles. After the adhering material accumulates and solidifies layer by layer, it will change the assembly clearance between the moving blade and the fixed blade and the cutting accuracy. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides a yam compound powder drying and granulation device to solve the above problems.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A yam compound powder drying and granulation device includes an orifice plate, an extrusion chamber, a drying chamber, and a power mechanism. The material in the extrusion chamber is squeezed out from the orifice plate and enters the interior of the drying chamber after being compressed. The device also includes a cylinder. The orifice plate divides the space inside the cylinder into upper and lower chambers, which are the extrusion chamber and the drying chamber. A support is rotatably connected to the bottom of the orifice plate. The support is driven and connected to the output of the power mechanism. The support is equipped with a scraper mechanism and a self-rotating ring knife mechanism. The ring knife mechanism is used to segment the material extruded from the orifice plate. The drying chamber is equipped with several screen plates, which are arranged vertically in layers and at an incline. The inclination directions of adjacent screen plates are opposite. A material drop port is formed between the bottom end of the screen plate and the inner wall of the drying chamber. The screen aperture of each layer of screen plates decreases progressively from top to bottom. After the material is screened by the screen plates, the intercepted material is guided by the inclined surface of the screen plate and then falls through the material drop port to the next level screen plate, and finally flows into the collection box set below. The cylinder is equipped with a shaking mechanism, and the sieve plate and the ring knife mechanism are both driven and connected to the shaking mechanism.

[0007] Preferably, the power mechanism includes a motor, and both the cylinder and the motor are mounted on the base. The output end of the motor is equipped with a reducer, and the output end of the reducer is equipped with a power shaft. The power shaft is coaxially inserted into the interior of the drying chamber, and the power shaft located inside the drying chamber is coaxially and fixedly connected to the middle of the support.

[0008] Preferably, the bottom of the side wall of the cylinder is provided with a groove, and the outer wall of the collection box slides in conjunction with the inner wall of the groove.

[0009] Preferably, the drying chamber is provided with a guide plate, which is located at the bottom of the lowest screen plate. The guide plate is inclined and its bottom end extends into the interior of the collection box. The guide plate is provided with air vents, and the edges of the sieve plate and the guide plate are in contact with the inner wall of the drying chamber.

[0010] Preferably, the shaking mechanism includes a lifting sleeve, a guide plate and multiple screen plates, all fixedly connected to the lifting sleeve, and a guide seat fixedly connected to the inner bottom wall of the drying chamber. The bottom end of the lifting sleeve is inserted into the interior of the guide seat and can slide within the guide seat.

[0011] Preferably, the power shaft and the lifting sleeve are slidably connected through each other, the power shaft is provided with a first ball bearing seat, the inner wall of the lifting sleeve is provided with a guide groove, and the balls on the first ball bearing seat are slidably connected with the inner wall of the guide groove. The guide groove is composed of a first spiral groove and a second spiral groove. The spiral rotation angle of the first spiral groove and the second spiral groove is half a circle. The upper and lower ends of the first spiral groove are respectively connected to the upper and lower ends of the inner cavity of the second spiral groove, forming a closed and meandering spiral slide passage.

[0012] Preferably, the annular cutter mechanism includes a mounting shell fixed on a bracket, a rotating shaft rotatably connected inside the mounting shell, the top end of the rotating shaft protruding from the mounting shell, and an annular cutter coaxially fixedly connected to the end end, the top surface of the annular cutter matching the bottom of the perforated plate; The top end of the lifting sleeve is rotatably connected to a fixed frame, and a plug rod is fixedly connected to the fixed frame. The top end of the plug rod is inserted into the interior of the mounting shell, and a second ball bearing seat is fixedly connected to the end. The outer surface of the rotating shaft is provided with a wave groove, and the balls of the second ball bearing seat slide in cooperation with the inner wall of the wave groove.

[0013] Preferably, the scraper mechanism includes an upper scraper and a lower scraper fixedly mounted on a bracket, with the upper scraper and the lower scraper respectively abutting the upper and lower surfaces of the annular cutter.

[0014] Preferably, the extrusion chamber is equipped with a screw conveyor, and a feed hopper is provided on one side of the cylinder, with the output end of the feed hopper connected to the interior of the extrusion chamber.

[0015] Preferably, the bottom of the drying chamber is provided with an air inlet, an electric heating device is provided on the air inlet, and a negative pressure fan is installed on the cylinder, with the input end of the negative pressure fan connected to the top interior of the drying chamber.

[0016] The beneficial effects of this invention are as follows: 1. This invention employs a ring cutter with a self-rotating drive mechanism. Compared to traditional fixed square cutters, the ring cutter has a larger usable cutting surface. Under the combined motion of revolution and stepping rotation, the overall wear distribution of the cutter is more balanced, resulting in a longer service life. During the stepping rotation of the ring cutter, the upper and lower scrapers scrape off the adhering material on the upper and lower end faces of the ring cutter, effectively avoiding problems such as increased frictional resistance, increased equipment operating load, and localized heat accumulation in the cutting area caused by the thickening of the material buildup on the cutter. At the same time, it avoids the hardening and accumulation of the material, which can cause the cutter clearance to shift, reduce cutting accuracy, and result in defects such as material agglomeration and clumps of particles, thus ensuring the stable operation of the granulation process and the quality of the finished granules.

[0017] 2. This invention adopts a structure of first grading and screening and then drying. Compared with the traditional drying mode where particles of different sizes are mixed and piled up, it can effectively avoid the stacking and mixing of materials of different particle sizes, so that the materials are heated more evenly and fully. At the same time, the heating time is matched according to the particle size, avoiding the defects of over-drying of small particles and insufficient drying of large particles, thus improving the drying uniformity and overall quality of the finished material.

[0018] 3. During the operation of this invention, the guide plate and multi-stage screen plate continuously oscillate up and down, which can effectively improve the flowability of materials on the plate surface, suppress material blockage and accumulation, and ensure the smoothness of material conveying and the effect of grading and screening. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a cross-sectional view of the present invention. Figure 1 .

[0021] Figure 3 This is a cross-sectional view of the present invention. Figure 2 .

[0022] Figure 4 This is a schematic diagram of the installation structure of the ring cutter mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the ring-shaped cutter mechanism of the present invention.

[0024] Figure 6 This is a cross-sectional view of the mounting shell of the present invention.

[0025] Figure 7 For the present invention Figure 2 A magnified structural diagram of part A in the middle.

[0026] In the attached diagram: 1. Cylinder; 2. Orifice plate; 3. Support; 4. Screen plate; 5. Collection box; 6. Extrusion chamber; 7. Drying chamber; 8. Drop outlet; 9. Motor; 10. Base; 11. Reducer; 12. Power shaft; 13. Guide plate; 14. Slot; 15. Lifting sleeve; 16. Guide seat; 17. First ball bearing seat; 18. Guide groove; 19. Rotating shaft; 20. Annular cutter; 21. Fixing frame; 22. Insert rod; 23. Screw conveyor; 24. Mounting shell; 25. Second ball bearing seat; 26. Corrugated groove; 27. Central shaft; 28. Feed hopper; 29. ​​Electric heating device; 30. Negative pressure fan; 31. Upper scraper; 32. Lower scraper; 33. Clearance groove. Detailed Implementation

[0027] The following will be for reference. Figures 1 to 7 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0028] A yam compound powder drying and granulation device, such as Figure 1 and Figure 2As shown, the device includes an orifice plate 2, an extrusion chamber 6, a drying chamber 7, and a power mechanism. Material in the extrusion chamber 6 is squeezed out through the orifice plate 2 and enters the drying chamber 7. It also includes a cylinder 1. The orifice plate 2 divides the space inside the cylinder 1 into upper and lower chambers, which are the extrusion chamber 6 and the drying chamber 7. A support 3 is rotatably connected to the bottom of the orifice plate 2. The support 3 is driven by the output of the power mechanism. The support 3 is equipped with a scraper mechanism and a self-rotating annular blade mechanism. The annular blade mechanism is used to segment the material extruded from the orifice plate 2. During operation, the power mechanism drives the support 3 to rotate, and the annular blade mechanism rotates with the support 3, segmenting the material extruded from the orifice plate 2 into material particles. The granular material falls into the drying chamber 7.

[0029] like Figure 3 As shown, the bottom of the drying chamber 7 is provided with an air inlet, and an electric heating device 29 is provided on the air inlet. In this embodiment, the electric heating device 29 is an electric heating wire. A negative pressure fan 30 is installed on the cylinder 1. The input end of the negative pressure fan 30 is connected to the top of the drying chamber 7. During the use of this device, the negative pressure fan 30 operates continuously. Under the action of negative pressure, external air is drawn in through the air inlet, heated by the electric heating device 29, and then enters the interior of the drying chamber 7, thereby drying the granular material entering the drying chamber 7. The airflow in the drying chamber 7 flows from bottom to top.

[0030] like Figure 2 and Figure 3 As shown, the drying chamber 7 is equipped with several sieve plates 4, which are arranged vertically in layers and at an incline. The inclination directions of adjacent sieve plates 4 are opposite. A discharge port 8 is formed between the bottom end of the sieve plate 4 and the inner wall of the drying chamber 7. The aperture of the sieve holes of each layer of sieve plates 4 decreases progressively from top to bottom. After the granular material enters the drying chamber 7, it is screened by the sieve plates 4. The intercepted material is guided by the inclined surface of the sieve plate 4 and moves to the bottom end of the sieve plate 4 before falling to the next sieve plate 4 through the discharge port 8. It should be noted that, due to the different particle sizes, the screening allows the smaller particles to fall to the bottom quickly, while the larger particles need to be guided by the inclined surface of the sieve plate 4 to flow slowly to the bottom. This ensures that the larger particles are heated for a longer time and the smaller particles are heated for a shorter time, avoiding the situation where the smaller particles are over-dried and the larger particles are under-dried.

[0031] The drying chamber 7 is equipped with a guide plate 13, which is located at the bottom of the lowest screen plate 4. The guide plate 13 is inclined and its bottom end extends into the interior of the collection box 5. The bottom of the side wall of the cylinder 1 is provided with a groove 14, and the outer wall of the collection box 5 slides in fit with the inner wall of the groove 14. The guide plate 13 is provided with ventilation holes, through which hot air can pass to ensure the drying effect. The edges of the screen plate 4 and the guide plate 13 are in contact with the inner wall of the drying chamber 7.

[0032] The dried material eventually falls onto the guide plate 13, and then flows into the collection box 5 below after being guided by the inclined surface of the guide plate 13, thus collecting the dried material. Through the coordinated arrangement of the chute 14 and the collection box 5, the collection box 5 can be pulled out to facilitate the removal of the granular material.

[0033] like Figures 1-3 As shown, the power mechanism includes a motor 9. Both the cylinder 1 and the motor 9 are mounted on the base 10. The output end of the motor 9 is equipped with a reducer 11. The motor 9 is a servo motor. The output end of the reducer 11 is equipped with a power shaft 12. The power shaft 12 is coaxially inserted into the interior of the drying chamber 7. The power shaft 12 located in the drying chamber 7 is coaxially fixedly connected to the middle of the support 3. When the motor 9 starts, it drives the power shaft 12 to rotate, and the support 3 follows the rotation of the power shaft 12.

[0034] like Figure 2 , Figure 3 and Figure 7 As shown, a swaying mechanism is provided on the cylinder 1, and the sieve plate 4 and the annular knife mechanism are both driven and connected to the swaying mechanism. The swaying mechanism includes a lifting sleeve 15, a guide plate 13 and multiple sieve plates 4 are fixedly connected to the lifting sleeve 15, and a guide seat 16 is fixedly connected to the inner bottom wall of the drying chamber 7. The bottom end of the lifting sleeve 15 is inserted into the interior of the guide seat 16 and can slide inside the guide seat 16. When the lifting sleeve 15 slides up and down along the guide seat 16, it drives the guide plate 13 and multiple sieve plates 4 to move up and down.

[0035] The power shaft 12 and the lifting sleeve 15 are slidably connected. The power shaft 12 is provided with a first ball bearing seat 17, and the inner wall of the lifting sleeve 15 is provided with a guide groove 18. The balls on the first ball bearing seat 17 are slidably connected with the inner wall of the guide groove 18. The guide groove 18 is composed of a first spiral groove and a second spiral groove. The spiral rotation angle of the first spiral groove and the second spiral groove are both half a circle. The upper and lower ends of the first spiral groove are respectively connected to the upper and lower ends of the second spiral groove, forming a closed and meandering spiral sliding passage.

[0036] During the rotation of the power shaft 12, the balls of the first ball bearing seat 17 slide in the guide groove 18. Since the guide groove 18 is composed of a combination of a first spiral groove and a second spiral groove, it drives the lifting sleeve 15 to slide up and down along the guide seat 16, thereby causing the guide plate 13 and multiple screen plates 4 to shake up and down. The shaking of the guide plate 13 and screen plates 4 can improve the flowability of the material above them, thereby ensuring the conveying and screening effect.

[0037] like Figures 3-6As shown, the annular cutter mechanism includes a mounting shell 24 fixed on the bracket 3. A rotating shaft 19 is rotatably connected inside the mounting shell 24. The top end of the rotating shaft 19 extends out of the mounting shell 24, and an annular cutter 20 is coaxially fixedly connected to the end. The annular cutter 20 has cutting surfaces at both its inner and outer edges. The annular cutter 20 can rotate around the rotating shaft 19 as its axis, that is, the annular cutter 20 rotates on its own axis. The top surface of the annular cutter 20 matches the bottom of the perforated plate 2.

[0038] The top end of the lifting sleeve 15 is rotatably connected to a fixed frame 21, and a rod 22 is fixedly connected to the fixed frame 21. The top end of the rod 22 is inserted into the interior of the mounting shell 24, and the end is fixedly connected to a second ball bearing seat 25. The outer surface of the rotating shaft 19 is provided with a wave groove 26, and the balls of the second ball bearing seat 25 slide in cooperation with the inner wall of the wave groove 26. During the up-and-down swaying of the lifting sleeve 15, the rod 22 moves accordingly. The rod 22 is repeatedly inserted into or pulled out of the mounting shell 24, causing the second ball bearing seat 25 to move up and down reciprocally. The balls of the second ball bearing seat 25 slide in the wave groove 26, thereby driving the rotating shaft 19 to rotate step by step, and the annular cutter 20 follows the movement to rotate step by step.

[0039] The scraper mechanism includes an upper scraper 31 and a lower scraper 32 fixedly mounted on the bracket 3. The upper scraper 31 and the lower scraper 32 are respectively in contact with the upper and lower surfaces of the annular cutter 20, such as... Figure 6 As shown, the annular cutter 20 is attached to the bottom of the perforated plate 2. The bottom of the perforated plate 2 is provided with a relief groove 33. The upper scraper 31 is located at the relief groove 33. During the stepping rotation of the annular cutter 20, when a part of the annular cutter 20 rotates to the relief groove 33, the upper scraper 31 and the lower scraper 32 scrape off the adhering material on the upper and lower surfaces of the annular cutter 20 to avoid excessive adhering material on the cutter, which would lead to increased friction, increased workload, local overheating, thick accumulation of adhesive material, changes in the clearance between the moving and fixed cutters, and particle adhesion into clumps or connected particles.

[0040] like Figure 2 and Figure 3 As shown, the extrusion chamber 6 is equipped with an auger conveyor 23, which consists of auger blades, a central shaft 27, and a drive motor. The drive motor is not shown. When the auger blades rotate, they convey the material in the extrusion chamber 6 downwards. After the material accumulates and is compressed at the bottom, it is squeezed out from the perforated plate 2. This is existing technology and will not be described in detail. In specific use, the drive motor can be omitted, and a linkage transmission mechanism, such as a speed-changing gear, can be added between the central shaft 27 and the power shaft 12. When the power shaft 12 rotates, it drives the auger blades, which effectively reduces the equipment manufacturing cost and realizes the synchronous start and stop and linkage operation of the material extrusion process and the segmented shearing process, ensuring that the timing of each process action is matched and the working conditions are consistent.

[0041] A feeding funnel 28 is provided on one side of the cylinder 1. The output end of the feeding funnel 28 is connected to the inside of the extrusion chamber 6. The feeding funnel 28 is used to feed material into the extrusion chamber 6.

[0042] The working principle of this device is as follows: the auger conveyor 23 conveys the material inside the extrusion chamber 6 downwards, the material accumulates and is extruded at the bottom of the chamber, and then is squeezed out from the die holes of the perforated plate 2.

[0043] During the operation of this device, the motor 9 runs continuously, and the rotation of the power shaft 12 drives the support 3 to rotate, causing the annular cutter 20 to revolve around the power shaft 12. The annular cutter 20 cuts and segments the strip material extruded from the perforated plate 2 to form granular material. The formed granular material falls into the drying chamber 7 under the action of gravity.

[0044] After the granular material enters the drying chamber 7, it is graded and screened through multiple layers of screen plates 4. The material trapped by the screen plates 4 slides along the inclined guide surface of the screen plates 4 and falls step by step to the next screen plate 4 through the discharge port 8. Due to the difference in particle size, small-diameter particles penetrate the screen holes and sink quickly downwards, while large-diameter particles slide slowly down the inclined surface of the screen plates 4. This creates a differentiated drying condition where large-diameter materials are heated for a long time and small-diameter materials are heated for a short time. Compared with the drying mode of traditional equipment where large and small particles are mixed and piled up, this device adopts a structure of first grading and screening and then drying, which can effectively avoid the stacking and mixing of materials of different particle sizes, making the material heated more evenly and fully. At the same time, the heating time is matched according to the particle size, avoiding the defects of over-drying of small particles and insufficient drying of large particles, and improving the drying uniformity and overall quality of the finished material.

[0045] After drying, the material finally falls onto the surface of the guide plate 13, then slides along the inclined guide surface of the guide plate 13 and flows into the lower collection box 5, completing the automatic collection and storage of the dried finished granular material.

[0046] It should be noted that during the rotation of the power shaft 12, the balls of the first ball bearing seat 17 slide along the inner wall of the guide groove 18. Since the guide groove 18 is composed of a combination of the first spiral groove and the second spiral groove, it drives the lifting sleeve 15 to slide up and down along the guide seat 16, which in turn drives the guide plate 13 and the multi-stage screen plate 4 to swing up and down synchronously. The swinging of the screen plate 4 and the guide plate 13 can effectively improve the material flow on the plate surface, suppress material blockage and accumulation, and ensure the smoothness of material conveying and the grading and screening effect.

[0047] During the reciprocating lifting and lowering motion of the lifting sleeve 15, the insertion rod 22 is simultaneously driven to lift and lower, causing the insertion rod 22 to repeatedly insert into and withdraw from the mounting shell 24, thereby driving the second ball seat 25 to perform up-down reciprocating displacement. The balls of the second ball seat 25 slide along the inner wall of the wave groove 26, thereby driving the rotating shaft 19 to rotate step by step, and finally driving the annular cutter 20 to rotate step by step.

[0048] This device uses a ring cutter 20 and is equipped with a self-rotation drive mechanism. Compared with the traditional fixed square cutter, the ring cutter 20 has a larger working surface for cutting. Under the combined motion of revolution and stepping rotation, the overall wear distribution of the cutter is more balanced and the service life of the cutter is longer.

[0049] During the stepping rotation of the annular cutter 20, when the annular cutter 20 partially rotates to the position corresponding to the clearance groove 33, this partial position corresponds to the upper scraper 31 and the lower scraper 32. The upper scraper 31 and the lower scraper 32 scrape off the adhesive material adhering to the upper and lower end faces of the annular cutter 20, effectively avoiding problems such as increased frictional resistance, increased equipment operating load, and local heat accumulation in the cutting area caused by the thickening of the adhesive material on the cutter. At the same time, it avoids the solidification and accumulation of adhesive material causing the tool fitting clearance to shift, the reduction of cutting accuracy, and defects such as material agglomeration and sticky particles, ensuring the stable operation of the granulation process and the quality of the finished granules.

[0050] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A Dioscorea composite powder drying and granulating device, comprising a hole plate (2), an extrusion chamber (6), a drying chamber (7) and a power mechanism, the material in the extrusion chamber (6) is extruded from the hole plate (2) after being pressed, and enters the inside of the drying chamber (7), characterized in that, It also includes a cylinder (1), and a perforated plate (2) divides the space inside the cylinder (1) into two chambers, namely the extrusion chamber (6) and the drying chamber (7). A support (3) is rotatably connected to the bottom of the perforated plate (2). The support (3) is driven to the output of the power mechanism. The support (3) is equipped with a scraper mechanism and a self-rotating ring knife mechanism. The ring knife mechanism is used to segment the material extruded from the perforated plate (2). The drying chamber (7) is provided with several screen plates (4). The multiple screen plates (4) are arranged vertically in layers and are inclined. The inclination directions of adjacent screen plates (4) are opposite. A material drop port (8) is formed between the bottom end of the screen plate (4) and the inner wall of the drying chamber (7). The screen hole diameter of each layer of screen plate (4) is set to decrease step by step from top to bottom. After the material is screened by the screen plate (4), the intercepted material is guided by the inclined surface of the screen plate (4) and then falls to the next level screen plate (4) through the material drop port (8), and finally flows into the collection box (5) set below. The cylinder (1) is equipped with a shaking mechanism, and the sieve plate (4) and the ring knife mechanism are both driven and connected to the shaking mechanism.

2. The yam composite powder drying granulator according to claim 1, characterized in that, The power mechanism includes a motor (9), and both the cylinder (1) and the motor (9) are mounted on the base (10). The output end of the motor (9) is provided with a reducer (11), and the output end of the reducer (11) is provided with a power shaft (12). The power shaft (12) is coaxially inserted into the interior of the drying chamber (7), and the power shaft (12) located in the drying chamber (7) is coaxially fixedly connected to the middle part of the support (3).

3. The yam composite powder drying granulator according to claim 1, characterized in that, The bottom of the side wall of the cylinder (1) is provided with a groove (14), and the outer wall of the collection box (5) slides in conjunction with the inner wall of the groove (14).

4. The yam compound powder drying and granulation device according to claim 3, characterized in that, The drying chamber (7) is provided with a guide plate (13), which is located at the bottom of the lowest screen plate (4). The guide plate (13) is inclined and the bottom end of the guide plate (13) extends into the inside of the collection box (5). The guide plate (13) is provided with air holes, and the edges of the sieve plate (4) and the guide plate (13) are in contact with the inner wall of the drying chamber (7).

5. The yam compound powder drying and granulation device according to claim 2, characterized in that, The shaking mechanism includes a lifting sleeve (15), a guide plate (13) and multiple sieve plates (4) which are fixedly connected to the lifting sleeve (15). A guide seat (16) is fixedly connected to the inner bottom wall of the drying chamber (7). The bottom end of the lifting sleeve (15) is inserted into the interior of the guide seat (16) and can slide inside the guide seat (16).

6. The yam compound powder drying and granulation device according to claim 5, characterized in that, The power shaft (12) and the lifting sleeve (15) are slidably connected through each other. The power shaft (12) is provided with a first ball seat (17), and the inner wall of the lifting sleeve (15) is provided with a guide groove (18). The balls on the first ball seat (17) are slidably connected with the inner wall of the guide groove (18). The guide groove (18) is composed of a first spiral groove and a second spiral groove. The spiral rotation angle of the first spiral groove and the second spiral groove is half a circle. The upper and lower ends of the first spiral groove are respectively connected to the inner cavities of the upper and lower ends of the second spiral groove to form a closed and meandering spiral sliding passage.

7. The yam compound powder drying and granulation device according to claim 5, characterized in that, The ring cutter mechanism includes a mounting shell (24) fixed on the bracket (3), a rotating shaft (19) is rotatably connected inside the mounting shell (24), the top end of the rotating shaft (19) passes through the mounting shell (24), and the end is coaxially fixedly connected to a ring cutter (20), the top surface of the ring cutter (20) matches the bottom of the perforated plate (2); The top end of the lifting sleeve (15) is rotatably connected to a fixed frame (21), and a plug rod (22) is fixedly connected to the fixed frame (21). The top end of the plug rod (22) is inserted into the interior of the mounting shell (24), and the end is fixedly connected to a second ball seat (25). The outer surface of the rotating shaft (19) is provided with a wave groove (26), and the balls of the second ball seat (25) slide in cooperation with the inner wall of the wave groove (26).

8. The yam compound powder drying and granulation device according to claim 7, characterized in that, The scraper mechanism includes an upper scraper (31) and a lower scraper (32) fixedly mounted on a bracket (3). The upper scraper (31) and the lower scraper (32) are respectively attached to the upper and lower surfaces of the annular cutter (20).

9. The yam compound powder drying and granulation device according to claim 1, characterized in that, The extrusion chamber (6) is equipped with a screw conveyor (23), and a feed hopper (28) is provided on one side of the cylinder (1). The output end of the feed hopper (28) is connected to the inside of the extrusion chamber (6).

10. The yam compound powder drying and granulation device according to claim 1, characterized in that, The bottom of the drying chamber (7) is provided with an air inlet, and an electric heating device (29) is provided on the air inlet. A negative pressure fan (30) is installed on the cylinder (1), and the input end of the negative pressure fan (30) is connected to the top of the drying chamber (7).

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