Continuous granulating and drying equipment

Abstract

The utility model provides continuous granulating and drying equipment, which belongs to the technical field of pharmaceutical equipment and comprises a granulating mechanism and a drying mechanism. The granulating mechanism comprises a double-screw granulator and a feeding pump, and the double-screw granulator is provided with a feeding pipe and a discharging pipe; the drying mechanism comprises an air inlet cavity and a fluidization cavity which are sequentially communicated from bottom to top, the bottom of the air inlet cavity is communicated with a hot air supply assembly, an air distribution plate is arranged at the top of the air inlet cavity, a filtering assembly and an air exhaust assembly are sequentially arranged at the top of the fluidization cavity from bottom to top, and a blanking pipe is arranged on the side, away from the discharging pipe, of the air inlet cavity. A vibration assembly is arranged on the outer wall of one side of the air inlet cavity. According to the continuous granulation drying equipment, a material conveying mechanism does not need to be independently arranged in the drying equipment, the requirement for material drying is met, meanwhile, vibration conveying of materials is carried out, the situation that the materials are stacked is avoided, and the drying effect of the materials is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of pharmaceutical equipment technology, and more specifically, it relates to a continuous granulation and drying equipment. Background Technology

[0002] Wet granulation is an emerging continuous granulation technology that offers great flexibility in equipment design and process variable selection. In continuous production processes, it has significant advantages over traditional batch production methods such as high-shear granulation and fluidized bed granulation. Continuous dryers are a relatively new type of equipment that has seen gradual development and expanded application over the past decade. Granule drying is a crucial step in continuous production processes because it allows for specific processes such as improving flowability, preventing segregation, and reducing dust. However, currently, there is no integrated continuous granulation vibrating dryer on the market that meets the quality requirements of pharmaceutical manufacturing, from feeding to finished product.

[0003] In the existing technology, after the wet granules are collected by wet granulation, they are transferred to the drying equipment. During the transfer process, the drying equipment is used to transfer the wet granules while drying them. Since the wet granules have a certain viscosity, they will accumulate on the conveying mechanism once they adhere to it. This not only affects the drying effect of the material, but also requires regular cleaning, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a continuous granulation and drying equipment, which aims to solve the problem that wet granular materials will continuously accumulate on the conveying mechanism, which not only affects the drying effect of the material, but also requires regular cleaning, which is time-consuming and labor-intensive.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a continuous granulation and drying device, comprising:

[0006] The granulation mechanism includes a twin-screw granulator and a feed pump. The twin-screw granulator has a feed pipe and a discharge pipe. The feed pipe is used to supply powdered material to the twin-screw granulator, and the feed pump is used to supply liquid material to the twin-screw granulator.

[0007] The drying mechanism includes an air inlet chamber and a fluidization chamber connected sequentially from bottom to top. A hot air supply assembly is connected to the bottom of the air inlet chamber, and an air distribution plate is provided at the top of the air inlet chamber to receive wet granular material discharged from the discharge pipe. A filter assembly and an exhaust assembly are sequentially provided at the top of the fluidization chamber from bottom to top. A discharge pipe is provided on the side of the air inlet chamber away from the discharge pipe, and a vibration assembly is provided on the outer wall of one side of the air inlet chamber. The vibration assembly drives the air distribution plate to tilt and reciprocate, thereby driving the wet granular material to vibrate and be transmitted towards the discharge pipe.

[0008] In one possible implementation, the twin-screw granulator is horizontally positioned, the feed pipe is connected to the upper end of the twin-screw granulator on the side away from the drying mechanism, the discharge pipe is connected to the lower end of the twin-screw granulator on the side closer to the drying mechanism, and the feed pump is connected to the upper middle part of the twin-screw granulator via a pipeline.

[0009] In one possible implementation, the twin-screw granulator is provided with a feed filter on the upper end of the side near the drying mechanism, and the feed filter is located directly above the discharge pipe.

[0010] In one possible implementation, a discharge valve is provided in the middle of the discharge pipe, and a particle size analyzer is installed on the outer wall of the discharge valve. The particle size analyzer is used to detect the outer diameter of the wet particulate material passing through the discharge valve.

[0011] In one possible implementation, the air inlet chamber is a conical chamber with a cross-section decreasing from top to bottom. The vibration assembly is disposed on the outer wall of the conical chamber near the feed pipe. The vibration assembly provides intermittent vibration that is inclined upward from the feed pipe toward the discharge pipe, so as to drive the material on the air distribution plate to move toward the discharge pipe.

[0012] In one possible implementation, the hot air supply assembly includes an intake dehumidifier, an intake fan, and an intake heater connected in sequence. The intake dehumidifier is used to dry the outside air and introduces it into the intake heater through the intake fan. The intake heater is connected to the bottom of the intake chamber through an intake duct, and an intake valve is provided in the intake duct.

[0013] In one possible implementation, a partition is horizontally disposed at the upper part of the fluidizing chamber, the partition dividing the fluidizing chamber into an upper chamber and a lower chamber;

[0014] The filter assembly includes multiple filter components, which are disposed on the partition and communicate with the upper chamber and the lower chamber;

[0015] The exhaust assembly includes an exhaust duct, a dust collector, and an exhaust fan connected in sequence. The exhaust duct is horizontally arranged in the upper chamber, and one end of the exhaust duct extends to the outside of the upper chamber and is connected to the dust collector. An exhaust valve is provided at the end of the exhaust duct extending into the upper chamber.

[0016] In one possible implementation, a backflush air manifold is provided at the top of the fluidization chamber, which backflushes multiple filter components through the upper chamber.

[0017] In one possible implementation, the discharge pipe is provided with a discharge valve and a pelletizer from top to bottom, the pelletizer is located at the lower end of the discharge pipe, and a receiving hopper is provided below the pelletizer.

[0018] In one possible implementation, the discharge pipe is provided with a temperature detector and a moisture detector from top to bottom, both of which are located above the discharge valve.

[0019] The beneficial effects of the continuous granulation and drying equipment provided by this utility model are as follows: Compared with the prior art, powdered material enters the twin-screw granulator through the feed pipe, and the feed pump supplies liquid material to the twin-screw granulator. The powdered material and liquid material are mixed in the twin-screw granulator to form wet granules, which fall onto the air distribution plate through the discharge pipe. The hot air supply component blows drying hot air from the bottom of the air inlet chamber toward the air distribution plate. The drying hot air passes through the wet granules on the air distribution plate and enters the fluidization chamber. After being filtered by the filter component, it is discharged by the exhaust component. While the wet granules are drying on the air distribution plate, the vibration component drives the air distribution plate to tilt and reciprocate through the air inlet chamber. The air distribution plate drives the material to vibrate and form a transmission from the discharge pipe to the drop pipe. The continuous granulation and drying equipment provided by this utility model does not require a separate material transmission mechanism in the drying equipment. By utilizing the tilting and reciprocating vibration of the air distribution plate, the material is vibrated and transmitted simultaneously while being dried, avoiding material accumulation and ensuring the drying effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a continuous granulation and drying device provided in an embodiment of the present invention.

[0022] In the diagram: 1. Loss-in-weight feeder; 2. Feed pump; 3. Feed filter; 4. Twin-screw pellet mill; 5. Discharge valve; 6. Particle size analyzer; 7. Vibrating motor; 8. Air distribution plate; 9. Filter components; 10. Backflush air manifold; 11. Spray ball; 12. Fluidized chamber; 13. Temperature detector; 14. Moisture analyzer; 15. Discharge valve; 16. Granulator; 17. Receiving hopper; 18. Air inlet chamber; 19. Air inlet valve; 20. Air inlet heater; 21. Air inlet fan; 22. Air inlet dehumidifier; 23. Exhaust duct; 24. Exhaust valve; 25. Dust collector; 26. Exhaust fan; 27. Pelletizing mechanism; 28. Drying mechanism; 29. ​​Display screen. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0025] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0026] Please see Figure 1 The present invention provides a continuous granulation and drying device. The continuous granulation and drying device includes a granulation mechanism 27 and a drying mechanism 28.

[0027] The granulation mechanism 27 includes a twin-screw granulator 4 and a feed pump 2. The twin-screw granulator 4 has a feed pipe and a discharge pipe. The feed pipe is used to supply powder material to the twin-screw granulator 4, and the feed pump 2 is used to supply liquid material to the twin-screw granulator 4. The drying mechanism 28 includes an air inlet chamber 18 and a fluidization chamber 12 connected sequentially from bottom to top. A hot air supply component is connected to the bottom of the air inlet chamber 18, and an air distribution plate 8 is provided at the top of the air inlet chamber 18. The air distribution plate 8 is used to receive the wet granular material discharged from the discharge pipe. A filter component and an exhaust component are arranged sequentially from bottom to top at the top of the fluidization chamber 12. A discharge pipe is provided on the side of the air inlet chamber 18 away from the discharge pipe. A vibration component is provided on the outer wall of one side of the air inlet chamber 18. The vibration component drives the air distribution plate 8 to tilt and reciprocate to drive the wet granular material to vibrate and be transmitted towards the discharge pipe.

[0028] This utility model provides a continuous granulation and drying equipment. Compared with the prior art, powder material enters the twin-screw granulator 4 through the feed pipe, and the feed pump 2 supplies liquid material to the twin-screw granulator 4. The powder material and liquid material are mixed in the twin-screw granulator 4 to form wet granules, which fall onto the air distribution plate 8 through the discharge pipe. The hot air supply component blows drying hot air from the bottom of the air inlet chamber 18 toward the air distribution plate 8. The drying hot air enters the fluidization chamber 12 after passing through the wet granules on the air distribution plate 8, and is discharged by the exhaust component after being filtered by the filter component. While the wet granules are drying on the air distribution plate 8, the vibration component drives the air distribution plate 8 to tilt and reciprocate through the air inlet chamber 18. The air distribution plate 8 drives the material to vibrate and form a transmission from the discharge pipe to the drop pipe. The present invention provides a continuous granulation and drying equipment that eliminates the need for a separate material conveying mechanism within the drying equipment. By utilizing the inclined reciprocating vibration of the air distribution plate 8, the material is conveyed through vibration while being dried, thus preventing material accumulation and ensuring the drying effect.

[0029] The twin-screw granulator 4 is horizontally positioned. The feed pipe is connected to the upper end of the twin-screw granulator 4 on the side furthest from the drying mechanism 28, and the discharge pipe is connected to the lower end of the twin-screw granulator 4 on the side closest to the drying mechanism 28. The feed pump 2 is connected to the upper middle part of the twin-screw granulator 4 via a pipeline. Powdered material enters the feed pipe through the loss-in-weight feeder 1, which has weighing and adjustment functions. By weighing the powdered material and adjusting the feeding speed into the feed pipe, the powdered material enters the twin-screw granulator 4 and undergoes preliminary mixing. Liquid material is then quantitatively added to the twin-screw granulator 4 via the feed pump 2 to mix with the powdered material. The liquid and powdered materials are continuously conveyed, mixed, and sheared, ultimately producing wet granules, which finally fall onto the air distribution plate 8 through the discharge pipe.

[0030] Among them, feed pump 2 can be a peristaltic pump, which is a device that achieves material conveying through the peristaltic principle. Peristaltic pumps are suitable for conveying liquids, solid suspensions, and high-viscosity media of different properties. The flow rate and pressure can be adjusted by regulating the roller speed or changing the roller position to meet different working conditions. They can also precisely control the flow rate and pressure for accurate conveying. Feed pump 2 can also be a plunger pump, which is a device that achieves material conveying through the reciprocating motion of a plunger (piston) within the pump body. Plunger pumps can easily adjust the flow rate by adjusting the plunger's stroke or speed to adapt to different feeding requirements, achieving precise feeding control. They can provide higher working pressures and are suitable for applications requiring high-pressure feeding.

[0031] A feed filter 3 is installed on the upper end of the side of the twin-screw pellet mill 4 near the drying mechanism 28. The feed filter 3 is located directly above the discharge pipe. The feed filter 3 can introduce clean external air into the side of the twin-screw pellet mill 4 near the drying mechanism 28, thereby balancing the air pressure of the discharge pipe and ensuring that the wet granules can fall smoothly through the discharge pipe.

[0032] Preferably, a discharge valve 5 is provided in the middle of the discharge pipe, and a particle size analyzer 6 is installed on the outer wall of the discharge valve 5. The particle size analyzer 6 is used to detect the outer diameter of the wet granular material passing through the discharge valve 5. The part of the discharge valve 5 located inside the discharge pipe is a rotary structure. This rotary wheel has multiple blades evenly distributed around its circumference. Adjacent blades form discharge chambers. As the rotary wheel rotates, the discharge chamber with its opening facing upward receives the material. When it rotates to the opening facing downward, the material leaves the discharge chamber and finally falls onto the air distribution plate 8. The material feed rate can be controlled by adjusting the rotation speed of the rotary wheel. When the material is conveyed downward through the discharge chamber, the particle size analyzer 6 detects the outer diameter of the material particles to ensure that it meets the requirements.

[0033] Please see Figure 1 The air inlet chamber 18 is a conical chamber with a cross-section decreasing from top to bottom. A vibration assembly is mounted on the outer wall of the conical chamber near the feed pipe. The vibration assembly provides intermittent upward vibration from the feed pipe towards the discharge pipe, thereby moving the material on the air distribution plate 8 towards the discharge pipe. The vibration assembly is an exciter motor 7, which is vertically fixed to the outer wall of the conical chamber via a mounting base. After the exciter motor 7 starts, it generates an intermittent impact force perpendicular to the outer wall of the conical chamber. This impact force is transmitted through the air inlet chamber 18 to the air distribution plate 8, causing the air distribution plate 8 to vibrate intermittently in the same direction. The material on the air distribution plate 8 is tilted and thrown up, gradually moving towards the discharge pipe. In this process, not only is material transfer completed, but the material is also further evenly dispersed on the upper surface of the air distribution plate 8, improving the drying effect.

[0034] The hot air supply assembly includes an intake dehumidifier 22, an intake fan 21, and an intake heater 20 connected in sequence. The intake dehumidifier 22 dries the outside air and introduces it into the intake heater 20 through the intake fan 21. The intake heater 20 is connected to the bottom of the intake chamber 18 through an intake duct, and an intake valve 19 is installed inside the intake duct. The intake valve 19 controls the airflow entering the intake chamber 18 by controlling its own opening degree.

[0035] A partition is horizontally installed at the upper part of the fluidizing chamber 12, dividing it into an upper chamber and a lower chamber. The filtration assembly includes multiple filter elements 9, which are mounted on the partition and connect the upper and lower chambers. The exhaust assembly includes an exhaust duct 23, a dust collector 25, and an exhaust fan 26 connected in sequence. The exhaust duct 23 is horizontally installed in the upper chamber, with one end extending to the outside of the upper chamber and connecting to the dust collector 25. The exhaust duct 23 is sealed to the upper chamber to ensure its airtightness. An exhaust valve 24 is installed at the end of the exhaust duct 23 extending into the upper chamber, controlling the airflow discharged from the exhaust chamber by adjusting its opening. The hot air passing through the air distribution plate 8 will contain some small particles of material. After passing through the multiple filter components 9, most of them will be blocked by the filter components 9. Smaller particles will be collected in the dust collector 25, ensuring that the gas discharged by the exhaust fan 26 does not contain any particulate matter. This reduces the impact of particulate matter on the normal operation of the exhaust fan 26 and also reduces environmental pollution.

[0036] Among them, the filter component 9 can be a filter membrane or a filter screen, which is directly installed on the reserved hole of the partition plate. The filter membrane or filter screen can achieve the effect of blocking powder from passing through. The filter component 9 can also be a filter cylinder, with the upper end of the filter cylinder installed on the reserved hole of the partition plate and the lower end of the filter cylinder extending downward into the fluidization chamber. Compared with the filter membrane and filter screen, the filter cylinder has a larger filtration area.

[0037] The air inlet valve 19 and the air outlet valve 24 are both proportional valves. The proportional valve can continuously and proportionally control the pressure, flow rate or direction of the oil according to the input electrical signal. After receiving the electrical signal, it can react quickly and change the pneumatic parameters, thereby achieving precise control of the air inlet and outlet volume.

[0038] In addition, multiple spray balls 11 are provided on the lower end face of the partition. When it is necessary to change the material, the touch operation can be performed on the display screen 29 of the continuous granulation and drying equipment. The spray balls 11 spray cleaning liquid into the fluidization chamber 12 to clean the air distribution plate 8 and avoid the mixing of different materials.

[0039] A backflush air manifold 10 is installed at the top of the fluidization chamber 12. The backflush air manifold 10 backflushes multiple filter elements 9 through the upper chamber. When a large amount of material particles adhering to the outer wall of the filter element 9 accumulates, affecting the air permeability of the filter element 9, a pressure detection unit can be installed in the fluidization chamber 12. When the pressure detection unit detects that the pressure in the fluidization chamber 12 exceeds a set value, it indicates that the air permeability of the filter element 9 no longer meets the exhaust requirements. At this time, the backflush air manifold 10 is activated, providing a backflush airflow to blow off the material particles adhering to the outer wall of the filter element 9, thus achieving the effect of cleaning the filter element 9. The backflush air manifold 10 can clean the filter element 9 without stopping the machine, ensuring the continuity of production.

[0040] The discharge pipe is equipped with a discharge valve 15 and a pelletizer 16 arranged sequentially from top to bottom. The pelletizer 16 is located at the lower end of the discharge pipe, and a receiving hopper 17 is located below the pelletizer 16. The portion of the discharge valve 15 inside the discharge pipe is a rotary structure. This rotary wheel has multiple circumferentially distributed blades, with adjacent blades forming discharge chambers. As the rotary wheel rotates, the discharge chamber, with its opening facing upwards, receives the material. When it rotates to the opening facing downwards, the material leaves the discharge chamber and finally falls into the pelletizer 16. The amount of material discharged can be controlled by adjusting the rotation speed of the rotary wheel. The pelletizer 16 is used to further crush, pelletize, or shape larger lumps or clumps of material. The main function of the pelletizer 16 is to break up, crush, or shape the material using mechanical force to achieve the desired particle size and shape. The processed material falls into the receiving hopper 17, thus completing the final collection of the material.

[0041] Preferably, a temperature detector 13 and a moisture detector 14 are arranged sequentially from top to bottom on the discharge pipe, both located above the discharge valve 15. Before passing through the discharge valve 15, the material passes through the temperature detector 13 and the moisture detector 14 in sequence, thereby completing the detection of the material's humidity and moisture content.

[0042] Furthermore, this invention provides a continuous granulation and drying device that scientifically integrates the granulation mechanism 27 and the drying mechanism 28 into one device using PAT (Process Analytical Technologies), resulting in higher space utilization compared to separate devices. PAT technology enables real-time monitoring of material properties, digitally displaying the values ​​on the integrated machine's display screen 29. This allows R&D personnel to control the process based on particle quality (such as particle size distribution, product temperature, and moisture content), generate reports, and facilitate research, significantly improving R&D efficiency.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A continuous granulation drying apparatus, characterized by, The application relates to a granulating and drying device. The granulating mechanism (27) comprises a double-screw granulator (4) and a feeding pump (2), the double-screw granulator (4) is provided with a feeding pipe and a discharging pipe, the feeding pipe is used for supplying powder materials to the double-screw granulator (4), and the feeding pump (2) is used for supplying liquid materials to the double-screw granulator (4); The drying mechanism (28) comprises an air inlet chamber (18) and a fluidization chamber (12) which are sequentially communicated from bottom to top, the bottom of the air inlet chamber (18) is communicated with a hot air supply assembly, the top of the air inlet chamber (18) is provided with a distribution air plate (8), the distribution air plate (8) is used for receiving wet granular materials discharged from the discharging pipe, the top of the fluidization chamber (12) is sequentially provided with a filtering assembly and an air exhaust assembly from bottom to top, one side of the air inlet chamber (18) away from the discharging pipe is provided with a discharging pipe, and the outer wall of one side of the air inlet chamber (18) is provided with a vibrating assembly; the vibrating assembly drives the distribution air plate (8) to reciprocatingly vibrate in an inclined mode, so as to drive the wet granular materials to vibrate and transmit in the direction of the discharging pipe.

2. A continuous granulation drying apparatus as claimed in claim 1, wherein, The double-screw granulator (4) is horizontally arranged, the feeding pipe is connected to the upper end of one side of the double-screw granulator (4) away from the drying mechanism (28), the discharging pipe is connected to the lower end of one side of the double-screw granulator (4) close to the drying mechanism (28), and the feeding pump (2) is connected to the upper end of the middle part of the double-screw granulator (4) through a pipeline.

3. A continuous granulator-dryer apparatus as claimed in claim 2, characterized in that, The double-screw granulator (4) is provided with a feeding filter (3) at the upper end of one side close to the drying mechanism (28), and the feeding filter (3) is arranged directly above the discharging pipe.

4. A continuous granulator-dryer apparatus as claimed in claim 2, characterized in that, The middle part of the discharging pipe is provided with a discharging valve (5), the outer wall of the discharging valve (5) is mounted with a particle size detector (6), and the particle size detector (6) is used for detecting the outer diameter of particles of the wet granular materials passing through the discharging valve (5).

5. A continuous granulator-dryer apparatus as claimed in claim 1, characterized in that, The air inlet chamber (18) is a conical chamber with a cross section decreasing from top to bottom, the vibrating assembly is arranged on the outer wall of one side of the conical chamber close to the feeding pipe, and the vibrating assembly provides intermittent vibration in an inclined upward mode from the feeding pipe to the discharging pipe, so as to drive the materials on the distribution air plate (8) to move in the direction of the discharging pipe.

6. A continuous granulator-dryer apparatus as claimed in claim 5, characterized in that, The hot air supply assembly comprises an air inlet dehumidifier (22), an air inlet fan (21) and an air inlet heater (20) which are sequentially connected, the air inlet dehumidifier (22) is used for drying external air and introducing the external air into the air inlet heater (20) through the air inlet fan (21), the air inlet heater (20) is communicated with the bottom of the air inlet chamber (18) through an air inlet air pipe, and the air inlet air pipe is provided with an air inlet valve (19).

7. A continuous granulator-dryer apparatus as claimed in claim 1, characterized in that, The upper part of the fluidization chamber (12) is horizontally provided with a partition plate, the partition plate divides the fluidization chamber (12) into an upper chamber and a lower chamber; The filtering assembly comprises a plurality of filtering components (9), and the filtering components (9) are arranged on the partition plate and communicate the upper chamber and the lower chamber; The exhaust assembly includes an exhaust duct (23), a dust collector (25), and an exhaust fan (26) connected in sequence. The exhaust duct (23) is horizontally arranged in the upper chamber, and one end of the exhaust duct (23) extends to the outside of the upper chamber and is connected to the dust collector (25). An exhaust valve (24) is provided at the end of the exhaust duct (23) extending into the upper chamber.

8. A continuous granulator-dryer apparatus as claimed in claim 7, characterized in that, The top of the fluidization chamber (12) is provided with a backflush air bag (10), which backflush air bag (10) backflushes multiple filter components (9) through the upper chamber.

9. A continuous granulator-dryer apparatus as claimed in claim 1, characterized in that, The discharge pipe is provided with a discharge valve (15) and a pelletizer (16) from top to bottom. The pelletizer (16) is located at the lower end of the discharge pipe, and a receiving bucket (17) is provided below the pelletizer (16).

10. A continuous granulator-dryer apparatus as claimed in claim 9, characterized in that, The discharge pipe is equipped with a temperature detector (13) and a moisture detector (14) from top to bottom, and both the temperature detector (13) and the moisture detector (14) are located above the discharge valve (15).

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